Background:Diabetic foot,a severe complication of diabetes,is characterized by chronic refractory wounds.Sanhuang Oil,a topical herbal formula,demonstrates significant therapeutic effects including antibacterial,anti-...Background:Diabetic foot,a severe complication of diabetes,is characterized by chronic refractory wounds.Sanhuang Oil,a topical herbal formula,demonstrates significant therapeutic effects including antibacterial,anti-inflammatory,and immunomodulatory activities.However,its active constituents and mechanisms of action against diabetic foot remain to be elucidated.Methods:In this study,the chemical constituents of Sanhuang Oil were identified using UPLC-QE-Orbitrap-MS.Subsequently,the mechanism by which Sanhuang Oil promotes diabetic foot ulcer healing was predicted by integrating network pharmacology and molecular docking.Additionally,diabetic mouse model was established in ICR mice using a combination of a high-fat diet(HFD)and streptozotocin(STZ)chemical induction.A full-thickness skin defect was created on the dorsum of the mice.Wound healing and the healing rate were observed following Sanhuang Oil intervention.The mechanism underlying Sanhuang Oil’s promotion of diabetic ulcer healing was further investigated using transcriptomics and histopathological examination(H&E staining).Results:A total of 97 active ingredients were identified from Sanhuang Oil.Network pharmacology analysis predicted 543 common targets,and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway enrichment analysis identified 203 relevant pathways.Molecular docking further confirmed high binding affinity(binding energy≤−5.0 kcal/mol)between specific active components in Sanhuang Oil(e.g.,coptisine,phellodendrine,baicalein)and key targets associated with diabetic foot ulcers(e.g.,EGFR,AKT1,STAT3).In vivo experimental results demonstrated that the wound healing rate was significantly higher in Sanhuang Oil-treated groups compared to the model group(P<0.001).HE staining revealed that the high-dose Sanhuang Oil group exhibited more pronounced epithelial tissue coverage over the wound,reduced inflammatory cell infiltration,and increased collagen deposition and fibroblast proliferation.transcriptomic analysis identified Pdk4,Ttn,Csrp3,Actn2,Myoz2,Tnnc2,Myod1,Myog,Myot,and Myf6 as key regulatory proteins involved in promoting wound healing.Conclusion:Sanhuang Oil promotes wound healing in diabetic ulcer mice,potentially by mitigating inflammation and regulating key targets such as Pdk4 to enhance fibroblast function.These findings provide novel insights into the multi-target,multi-pathway mechanism of Sanhuang Oil for treating diabetic foot ulcers.展开更多
Objective:To evaluate the efficacy and safety of QL1206(a denosumab biosimilar to Xgeva■)in breast cancer patients with bone metastasis(BM)through subgroup analysis of a randomized,double-blind phaseⅢtrial(No.NCT045...Objective:To evaluate the efficacy and safety of QL1206(a denosumab biosimilar to Xgeva■)in breast cancer patients with bone metastasis(BM)through subgroup analysis of a randomized,double-blind phaseⅢtrial(No.NCT04550949).Methods:This subgroup analysis included patients with BM from breast cancer enrolled in a phaseⅢtrial.Patients were randomized(1:1)to receive either three cycles of QL1206 or denosumab(120 mg subcutaneously every 4 weeks).Subsequently,they received 10 cycles of QL1206(120 mg)over 40 weeks,followed by a 20-week safety follow-up.The primary endpoint was the percentage changes from baseline to week 13 in urinary Ntelopeptide corrected for creatinine(u NTx/Cr).Results:The breast cancer cohort consisted of 311 patients.Vertebral involvement(66.4%)was the most prevalent BM site at enrollment,while 27.7%of patients presented with≥3 metastatic bone lesions.At week 13,QL1206 demonstrated a median u NTx/Cr reduction of-69.9%(range:-98.1%-568.0%)vs.-74.3%(range:-97.7%-386.3%)for denosumab.The analysis of covariance revealed comparable least-square means for log-transformed changes:-1.416[95%confidence interval(95%CI):-1.736 to-1.096]vs.-1.501(95%CI:-1.824 to-1.178),yielding an between-group difference of 0.085(90%CI:-0.062-0.232;P=0.343).After a 53-week treatment period,83.6%achieved bone density improvement/disease stabilization.Safety profiles were comparable between groups.Conclusions:QL1206 demonstrated similar efficacy and safety to the reference denosumab in patients with BM from breast cancer,supporting QL1206 as a new option for management of BM from breast cancer.展开更多
Fruit firmness is a significant trait for blueberry breeding as it affects machinery harvest,consumer preference,and transportability.LOB transcription factors play a vital role in the development of lateral organs an...Fruit firmness is a significant trait for blueberry breeding as it affects machinery harvest,consumer preference,and transportability.LOB transcription factors play a vital role in the development of lateral organs and growth in higher plants;yet,few studies on LOB transcription factors have been reported in blueberries.We performed a genome-wide identification analysis of the blueberry LOB gene family.Using fruit at different developmental stages from the firm-flesh cultivar'Star',and the soft-flesh cultivar'O'Neal',the fruit firmness,polygalacturonase(PG)activity,and pectin content of different types were detected.A total of 150 VcLOB genes were identified in the blueberry genome,unevenly distributed across 46 chromosomes.They could be divided into six subfamilies,with members in each subfamily sharing similar gene structures and motifs.Based on the transcriptomic data and fruit firmness of two blueberry cultivars,four VcLOB genes functioning during the critical period of fruit firmness variation were selected,and their expression patterns were dissected,revealing differences in the expression pattern across various tissues and throughout the fruit development stages in blueberries.The fruit firmness of'O'Neal'is significantly lower than that of'Star'from stages S5 to S8 during fruit development.Additionally,the PG activity and water-soluble pectin content in'O'Neal'is significantly higher than those in'Star'.VcLOB107 overexpressed tomato plants exhibited notably higher fruit firmness,lower PG activity,and WSP content compared to the control group,indicating VcLOB107 is a regulator of fruit firmness differences between firm and soft flesh blueberries.展开更多
Peri-implant diseases are characterized by the resorption of hard tissue and the inflammation of soft tissue.Epigenetics refers to alterations in the expression of genes that are not encoded in the DNA sequence,influe...Peri-implant diseases are characterized by the resorption of hard tissue and the inflammation of soft tissue.Epigenetics refers to alterations in the expression of genes that are not encoded in the DNA sequence,influencing diverse physiological activities,including immune response,inflammation,and bone metabolism.Epigenetic modifications can lead to tissue-specific gene expression variations among individuals and may initiate or exacerbate inflammation and disease predisposition.However,the impact of these factors on peri-implantitis remains inconclusive.To address this gap,we conducted a comprehensive review to investigate the associations between epigenetic mechanisms and peri-implantitis,specifically focusing on DNA methylation and microRNAs(miRNAs or miRs).We searched for relevant literature on PubMed,Web of Science,Scopus,and Google Scholar with keywords including“epigenetics,”“peri-implantitis,”“DNA methylation,”and“microRNA.”DNA methylation and miRNAs present a dynamic epigenetic mechanism operating around implants.Epigenetic modifications of genes related to inflammation and osteogenesis provide a new perspective for understanding how local and environmental factors influence the pathogenesis of peri-implantitis.In addition,we assessed the potential application of DNA methylation and miRNAs in the prevention,diagnosis,and treatment of peri-implantitis,aiming to provide a foundation for future studies to explore potential therapeutic targets and develop more effective management strategies for this condition.These findings also have broader implications for understanding the pathogenesis of other inflammation-related oral diseases like periodontitis.展开更多
The eukaryotic cytochrome P450 ferulate-5-hydroxylase(F5H),a membrane-bound protein,plays a critical role in lignin synthesis involved in the biosynthesis of 5-Hydroxyferulic acid(5-HFA)from ferulic acid,with 5-HFA of...The eukaryotic cytochrome P450 ferulate-5-hydroxylase(F5H),a membrane-bound protein,plays a critical role in lignin synthesis involved in the biosynthesis of 5-Hydroxyferulic acid(5-HFA)from ferulic acid,with 5-HFA offering enhanced antioxidant properties.However,there is challenging to engineer recombinants for 5-HFA synthesis by expressing F5H in Escherichia coli.In this work,we co-expressed F5H derived from Arabidopsis thaliana(AtF5H)and NADPH-dependent cytochrome P450 reductase(CPR)in E.coli,and successfully synthesized ortho-hydroxylated ferulic acid.Simultaneously,by modifying the N-terminal regions of membrane proteins,we increased the concentration of product 5-HFA to 63.6 mg/L.Ferulic acid,utilized as the substrate,was extracted from discarded agricultural by-products,demonstrating a sustainable approach to valorizing agricultural waste.This work also advances the application of plant-derived membrane-bound proteins for the production of plant secondary metabolites in E.coli.展开更多
A previous study has indicated that Krüppel-like factor 7(KLF7), a transcription factor that stimulates Schwann cell(SC) proliferation and axonal regeneration after peripheral nerve injury, is a promising the...A previous study has indicated that Krüppel-like factor 7(KLF7), a transcription factor that stimulates Schwann cell(SC) proliferation and axonal regeneration after peripheral nerve injury, is a promising therapeutic transcription factor in nerve injury. We aimed to identify whether inhibition of micro RNA-146 b(mi R-146 b)affected SC proliferation, migration, and myelinated axon regeneration following sciatic nerve injury by regulating its direct target KLF7. SCs were transfected with mi RNA lentivirus, mi RNA inhibitor lentivirus, or KLF7 si RNA lentivirus in vitro. The expression of mi R146 b and KLF7,as well as SC proliferation and migration, were subsequently evaluated. In vivo, an acellular nerve allograft(ANA) followed by injection of GFP control vector or a lentiviral vector encoding an mi R-146 b inhibitor was used to assess the repair potential in a model of sciatic nerve gap. mi R-146 b directly targeted KLF7 by binding to the 30-UTR, suppressing KLF7. Up-regulation of mi R-146 b and KLF7 knockdown significantly reduced the proliferation and migration of SCs, whereas silencing mi R-146 b resulted in increased proliferation and migration. KLF7 protein was localized in SCs in which mi R-146 b was expressed in vivo.Similarly, 4 weeks after the ANA, anti-mi R-146 b increased KLF7 and its target gene nerve growth factor cascade, promoting axonal outgrowth. Closer analysis revealed improved nerve conduction and sciatic function index score, and enhanced expression of neurofilaments, P0(anti-peripheral myelin), and myelinated axon regeneration. Our findings provide new insight into the regulation of KLF7 by mi R-146 b during peripheral nerve regeneration and suggest a potential therapeutic strategy for peripheral nerve injury.展开更多
BACKGROUND Hepatocellular carcinoma(HCC) is the third leading cause of death from malignant tumors worldwide. More than 50% of HCC cases occur in China. The prognosis remains poor and overall efficacy is still unsatis...BACKGROUND Hepatocellular carcinoma(HCC) is the third leading cause of death from malignant tumors worldwide. More than 50% of HCC cases occur in China. The prognosis remains poor and overall efficacy is still unsatisfactory. Chemotherapy resistance is the most important reason for the poor outcome. Much progress has been made in the study of chemotherapy resistance of HCC;however, the specific mechanisms of progression of HCC have still only been partially established.Therefore, the mechanism of chemotherapy resistance in HCC requires more research.AIM To investigate the effect of miR-34 a expression on the growth inhibition of HepG2 cells by doxorubicin.METHODS A recombinant lentiviral vector containing miR-34 a was constructed and transfected into HepG2 cells. The expression of miR-34 a was detected by reverse transcription-polymerase chain reaction(commonly known as RT-PCR) before and after transfection. Cells were exposed to 2 μM doxorubicin or phosphatebuffered saline before and after transfection. Cell viability in each group was detected by MTT assay, and cell cycle and apoptosis were detected by flow cytometry. Changes in expression levels of phospho(p)-p53, sirtuin(SIRT) 1,cyclin D1, cyclin-dependent kinase(CDK) 4, CDK6, BCL-2, multidrug resistance protein(MDR) 1/P glycoprotein(P-gp), and AXL were detected by Western blotting.RESULTS Recombinant lentiviral vector LV-hsa-mir-34 a was successfully constructed by restriction endonuclease digestion and sequencing. RT-PCR showed that expression of miR-34 a in HepG2 cells was significantly upregulated after transfection(P < 0.01). MTT assay showed that growth of HepG2 cells was inhibited after upregulation of miR-34 a, and viability was significantly decreased after combined treatment with doxorubicin(P < 0.01). Flow cytometry showed that the number of HepG2 cells in G1 phase increased, and G1 phase arrest was more obvious after intervention with doxorubicin(P < 0.01). The apoptosis rate of HepG2 cells was increased after upregulation of miR-34 a, and became more obvious after intervention with doxorubicin(P < 0.01). Western blotting showed that upregulation of miR-34 a combined with treatment with doxorubicin caused significant changes in the expression levels of p-p53, SIRT1, cyclin D1, CDK4,CDK6, BCL-2, MDR1/P-gp and AXL proteins(P < 0.01).CONCLUSION MiR-34 a may enhance the inhibitory effect of doxorubicin by downregulating MDR1/P-gp and AXL, which may be related to p53 expression.展开更多
Removal of noxious dyes is gaining public and technological attention. Herein grafting polymerization was employed to produce a novel adsorbent using acrylic acid and carboxymethyl cellulose for dye removal. Scanning ...Removal of noxious dyes is gaining public and technological attention. Herein grafting polymerization was employed to produce a novel adsorbent using acrylic acid and carboxymethyl cellulose for dye removal. Scanning electron microscopy and Fourier-transform infrared spectroscopy verified the adsorbent formed under optimized reaction conditions. The removal ratio of adsorbent to Methyl Orange, Disperse Blue 2BLN and malachite green chloride reached to 84.2%, 79.6% and 99.9%, respectively. The greater agreement between the calculated and experimental results suggested that pseudo second-order kinetic model better represents the kinetic adsorption data. Equilibrium adsorptions of dyes were better explained by the Temkin isotherm. The results implied that this new cellulose-based absorbent had the universaiity for removal of dyes through the chemical adsorption mechanism.展开更多
Salt stress is a typical abiotic stress in plants that causes slow growth,stunting,and reduced yield and fruit quality.Fertilization is necessary to ensure proper crop growth.However,the effect of fertilization on sal...Salt stress is a typical abiotic stress in plants that causes slow growth,stunting,and reduced yield and fruit quality.Fertilization is necessary to ensure proper crop growth.However,the effect of fertilization on salt tolerance in grapevine is unclear.In this study,we investigated the effect of nitrogen fertilizer(0.01 and 0.1 mol L-1NH4NO3)application on the salt(200 mmol L-1NaCl)tolerance of grapevine based on physiological indices,and transcriptomic and metabolomic analyses.The results revealed that 0.01 mol L-1NH4NO3 supplementation significantly reduced the accumulation of superoxide anion(O2-·),enhanced the activities of superoxide dismutase(SOD)and peroxidase(POD),and improved the levels of ascorbic acid(AsA)and glutathione(GSH)in grape leaves compared to salt treatment alone.Specifically,joint transcriptome and metabolome analyses showed that the differentially expressed genes(DEGs)and differentially accumulated metabolites(DAMs)were significantly enriched in the flavonoid biosynthesis pathway(ko00941)and the flavone and flavonol biosynthesis pathway(ko00944).In particular,the relative content of quercetin(C00389)was markedly regulated by salt and nitrogen.Further analysis revealed that exogenous foliar application of quercetin improved the SOD and POD activities,increased the AsA and GSH contents,and reduced the H2O2 and O2-·contents.Meanwhile,10 hub DEGs,which had high Pearson correlations(R2>0.9)with quercetin,were repressed by nitrogen.In conclusion,all the results indicated that moderate nitrogen and quercetin application under salt stress enhanced the antioxidant system defense response,thus providing a new perspective for improving salt tolerance in grapes.展开更多
Background Obsessive-compulsive disorder(OCD)is considered a very debilitating disorder with severe loss of quality of life and income.Aims This study estimates the quality of life and economic consequences of OCD in ...Background Obsessive-compulsive disorder(OCD)is considered a very debilitating disorder with severe loss of quality of life and income.Aims This study estimates the quality of life and economic consequences of OCD in China.Methods The research team interviewed 639 patients with OCD in 13 hospitals in 12 cities in China.The direct method was used to get the direct cost of OCD.Indirect costs associated with OCD were estimated using the human capital approach.Linear regression analysis was conducted for quality of life and generalised linear model analysis was conducted for total cost.Sensitivity analysis was used to analyse the uncertainty of total cost.Results The mean quality of life score for OCD was 52.78(20.46).The annual total cost of OCD per capita was 24503.78(95%CI:22621.53 to 26386.03)renminbi(RMB)(US$3465.88(95%CI:US$3199.65 to US$3732.11)).The annual cost of OCD in China was estimated to be 37.74 billion(95%CI:34.95 billion to 40.53 billion)RMB(equal to US$5.34 billion(95%CI:US$4.94 billion to US$5.73 billion)).Sensitivity analysis showed that the total annual cost of OCD in China was between 23.15 billion RMB(US$3.27 billion)and 370.00 billion RMB(US$52.33 billion).Worse social function status,more psychiatric symptoms and higher Yale Brown Obsessive-Compulsive Scale(Y-BOCS)score were associated with worse quality of life.The numbers of clinic visits and hospitalisations,socioeconomic status,education,Y-BOCS scores and age were found to be significantly associated with total cost.Conclusions OCD is associated with low quality of life and high costs in China.The findings call for concerted efforts to improve services for patients with OCD.Improvements may include early detection and diagnosis,the provision of evidence-based treatments and relapse prevention strategies.展开更多
The effects of heating rate on the alloy element partitioning and mechanical properties during the phase transformation ofα→βin Ti-6Al-4 V alloy under solution treatment have been investigated by the experiments an...The effects of heating rate on the alloy element partitioning and mechanical properties during the phase transformation ofα→βin Ti-6Al-4 V alloy under solution treatment have been investigated by the experiments and phase field simulations,which reveal the evolutions of microstructure and compositions at the non-equilibrium state and well verify the experimental results.The specific results indicate that the compositions measured through electron probe micro-analysis(EPMA)under a lower heating rate are close to the equilibrium ones corresponding to the solution temperature.Heating up to the target solution temperature,as the heating rate increases,the Al content decreases and V increases in the primaryα(αp)grain with a larger size,the volume fraction ofαpincreases and the composition gradient betweenαpandβphases gets steeper.The interrelated relationship among the diffusion,compositions,solution temperature and free energy of the system has been discussed in detail.Moreover,increasing the heating rate(~20.0 K/min)may help to improve the mechanical properties of the alloy by mainly adjusting theαp/β;volume fractions,αpparticle size and secondaryα(αp)size during the process of heating up to the solution temperature.These results may shed some light on the optimization of the knowledge-based heat treatment route.展开更多
Indole is a biologically active compound formed by the fusion of benzene and pyrrole,and it is widely found in natural products and drugs.Due to the unique structure and properties of indole,its derivatives often exhi...Indole is a biologically active compound formed by the fusion of benzene and pyrrole,and it is widely found in natural products and drugs.Due to the unique structure and properties of indole,its derivatives often exhibit distinctive physiological activities,which has led to widespread attention in the field of pesticide development.Analyzing the design strategies and structure-activity relationships(SARs)of compounds is a crucial step in developing novel pesticides.This review mainly summarizes indole compounds with plant growth regulating,antiviral,fungicidal,herbicidal,and insecticidal activities,with the aim of providing new insights into the discovery and mechanism of action of novel indole-based pesticides.展开更多
Our previous study has shown that the transcription factor Krüppel-like factor 7(KLF7) promotes peripheral nerve regeneration and motor function recovery after spinal cord injury.KLF7 also participates in traumat...Our previous study has shown that the transcription factor Krüppel-like factor 7(KLF7) promotes peripheral nerve regeneration and motor function recovery after spinal cord injury.KLF7 also participates in traumatic brain injury,but its regulatory mechanisms remain poorly understood.In the present study,an HT22 cell model of traumatic brain injury was established by stretch injury and oxygenglucose deprivation.These cells were then transfected with an adeno-associated virus carrying KLF7(AAV-KLF7).The results revealed that,after stretch injury and oxygen-glucose deprivation,KLF7 greatly reduced apoptosis,activated caspase-3 and lactate dehydrogenase,downregulated the expression of the apoptotic markers B-cell lymphoma 2(Bcl-2)-associated X protein(Bax) and cleaved caspase-3,and increased the expression of βIII-tubulin and the antiapoptotic marker Bcl-2.Furthermore,KLF7 overexpression upregulated Janus kinase 2(JAK2) and signal transducer and activator of transcription 3(STAT3) phosphorylation in HT22 cells treated by stretch injury and oxygenglucose deprivation.Immunoprecipitation assays revealed that KLF7 directly participated in the phosphorylation of STAT3.In addition,treatment with AG490,a selective inhibitor of JAK2/STAT3,weakened the protective effects of KLF7.A mouse controlled cortical impact model of traumatic brain injury was then established.At 30 minutes before modeling,AAV-KLF7 was injected into the ipsilateral lateral ventricle.The protein and m RNA levels of KLF7 in the hippocampus were increased at 1 day after injury and recovered to normal levels at 3 days after injury.KLF7 reduced ipsilateral hippocampal atrophy,decreased the injured cortex volume,downregulated Bax and cleaved caspase-3 expression,and increased the number of 5-bromo-2'-deoxyuridine-positive neurons and Bcl-2 protein expression.Moreover,KLF7 transfection greatly enhanced the phosphorylation of JAK2 and STAT3 in the ipsilateral hippocampus.These results suggest that KLF7 may protect hippocampal neurons after traumatic brain injury through activation of the JAK2/STAT3 signaling pathway.The study was approved by the Institutional Review Board of Mudanjiang Medical University,China(approval No.mdjyxy-2018-0012) on March 6,2018.展开更多
Design of artificial ligaments possessing both osteogenic activity and antibacterial effect that promotes ligament-bone healing and prevents bacterial infection in bone tunnels for anterior cruciate ligament(ACL)recon...Design of artificial ligaments possessing both osteogenic activity and antibacterial effect that promotes ligament-bone healing and prevents bacterial infection in bone tunnels for anterior cruciate ligament(ACL)reconstruction remains a significant challenge.In this study,black tantalic oxide(BTO)submicro-particles with oxygen vacancies and structure defects were fabricated by using traditional white tan-talic oxide(WTO)through magnesium thermal reduction(MTR)method,and BTO was coated on polyetheretherketone(PEEK)fibers(PKF),which were woven into fabrics(PBT)as artificial ligaments.PBT with BTO coating exhibited excellent photothermal performance,which possessed not only antibac-terial effects in vitro but also anti-infective ability in vivo.PBT with optimized surface properties(e.g.,submicro-topography and hydrophilicity)not only significantly facilitated rat bone mesenchymal stem cells(BMSC)responses(e.g.,proliferation and osteogenic differentiation)in vitro but also stimulated new bone formation for ligament-bone healing in vivo.The presence of oxygen vacancies and structure de-fects in BTO did not change the surface properties and osteogenic activity of BPT while displaying an outstanding photothermal antibacterial effect.In summary,BPT with osteogenic activity and photother-mal antibacterial effect promoted bone regeneration and prevented bacterial infection,thereby promoting ligament-bone healing.Therefore,PBT would have tremendous potential as a novel artificial ligament for ACL reconstruction.展开更多
Objective To characterize Chinese families in which both parents and at least one child are diagnosed with malignant diseases and provide reference for cancer screening or early detection in people whose both parents ...Objective To characterize Chinese families in which both parents and at least one child are diagnosed with malignant diseases and provide reference for cancer screening or early detection in people whose both parents are diagnosed with cancer.Methods Medical records of all clients to the center of cancer screening and prevention of the National Cancer Center/Cancer Hospital between January 2008 and February 2018 were screened to select families in which both parents and at least one child were diagnosed with malignant diseases.The cancer profiles of fathers,mothers,sons and daughters,their age distribution at diagnosis,and similarity of cancers between two generations were analyzed.The proportions of each cancer in males and females of the cohort were compared with corresponding data from the National Cancer Center Registry of China(NCCRC)in 2013.Results Totally 13S families were identified from records of 33200 clients.Proportion of lung cancer in fathers(40/135,29.6%)and in mothers(38/135,28.1%)were higher than the national data(23.9%in males and 14.9%in females,respectively).The proportion of breast cancer in daughters(35/109,32.1%)was higher than that of mothers(14/135,10.4%)and the national data(17.1%),In 71 father-son pairs of cancer,46.5%(33/71)were of the same systematic disease,and 16.9%(12/71)were of the same cancer.These two indexes were 31.2%(n=34)and 10.1%(n=l 1),respectively in the 109 father-daughter pairs of cancer,36.6%(n=26)and 8.5%(n=6)respectively in the 71 mother-son pairs of cancer,and 31.2%(n=34)and 20.2%(n=20)respectively in the 109 mother-daughter pairs of cancer.Sons were more likely to suffer from cancers originated from the same system as father s cancer than daughters(χ2=4.299,P<0.05),and daughters were more likely to suffer from the same cancer as their mother's cancer than sons(χ2=4.506,P<0.05).The age(mean±standard deviation)of the daughters(52.4±12.7)and the sons(59.4±10.9)at diagnosis were significantly younger than the fathers(65.5±12.2)and the mothers(65.7±12.5)(all P<0.001)・Conclusions For people whose both parents are diagnosed as cancer,screening or early detection examinations should cover a full range of cancers rather than the cancers their father and mother have suffered,or cancers stemmed from the same system as their parents cancers.We suggest screening or early detection program for these special population start earlier than that for the general population,with emphasis on cancers derived from digestive system for males and women-specific cancers,i.e.,breast cancer,ovarian cancer,cervical cancer and uterine cancer for females.展开更多
The development,progression,and curative efficacy of head and neck squamous cell carcinoma(HNSCC)are influenced by complex interactions between epithelial and immune cells.Nevertheless,the specific changes in the natu...The development,progression,and curative efficacy of head and neck squamous cell carcinoma(HNSCC)are influenced by complex interactions between epithelial and immune cells.Nevertheless,the specific changes in the nature of these interactions and their underlying molecular mechanisms in HNSCC are not yet fully understood.Cuproptosis,a form of programmed cell death that is dependent on copper,has been implicated in cancer pathogenesis.However,the understanding of cuproptosis in the context of HNSCC remains limited.In this study,we have discovered that cuproptosis-related long noncoding RNAs(CRLs)known as JPX play a role in promoting the expression of the oncogene urokinase-type plasminogen activator(PLAU)by competitively binding to miR-193b-3p in HNSCC.The increased activity of the JPX/miR-193b-3p/PLAU axis in malignant epithelial cells leads to enhanced cell proliferation,migration,and invasion in HNSCC.Moreover,the overexpression of PLAU in tumor epithelial cells facilitates its interaction with the receptor PLAUR,predominantly expressed on macrophages,thereby influencing the abnormal epithelial–immune interactome in HNSCC.Notably,the JPX inhibitor Axitinib and the PLAU inhibitor Palbociclib may not only exert their effects on the JPX/miR-193b-3p/PLAU axis that impacts the malignant tumor behaviors and the epithelial–immune cell interactions but also exhibit synergistic effects in terms of suppressing tumor cell growth and arresting cell cycle by targeting epidermal growth factor receptor(EGFR)and cyclin-dependent kinase(CDK4/6)for the treatment of HNSCC.展开更多
基金supported by the Natural Science Foundation of Hubei Provincial Department of Education(D20232101)Shandong Second Medical University 2024 Affiliated Hospital(Teaching Hospital)Scientific Research Development Fund Project(2024FYQ026)+3 种基金the innovative Research Programme of Xiangyang No.1 People’s Hospital(XYY2023ZY01)Faculty Development Grants of Xiangyang No.1 People’s Hospital Affiliated to Hubei University of Medicine(XYY2023D05)Joint supported by Hubei Provincial Natural Science Foundation and Xiangyang of China(2025AFD091)Traditional Chinese Medicine Scientific Research Project of Hubei Provincial Administration of Traditional Chinese Medicine(ZY2025D019).
摘要Background:Diabetic foot,a severe complication of diabetes,is characterized by chronic refractory wounds.Sanhuang Oil,a topical herbal formula,demonstrates significant therapeutic effects including antibacterial,anti-inflammatory,and immunomodulatory activities.However,its active constituents and mechanisms of action against diabetic foot remain to be elucidated.Methods:In this study,the chemical constituents of Sanhuang Oil were identified using UPLC-QE-Orbitrap-MS.Subsequently,the mechanism by which Sanhuang Oil promotes diabetic foot ulcer healing was predicted by integrating network pharmacology and molecular docking.Additionally,diabetic mouse model was established in ICR mice using a combination of a high-fat diet(HFD)and streptozotocin(STZ)chemical induction.A full-thickness skin defect was created on the dorsum of the mice.Wound healing and the healing rate were observed following Sanhuang Oil intervention.The mechanism underlying Sanhuang Oil’s promotion of diabetic ulcer healing was further investigated using transcriptomics and histopathological examination(H&E staining).Results:A total of 97 active ingredients were identified from Sanhuang Oil.Network pharmacology analysis predicted 543 common targets,and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway enrichment analysis identified 203 relevant pathways.Molecular docking further confirmed high binding affinity(binding energy≤−5.0 kcal/mol)between specific active components in Sanhuang Oil(e.g.,coptisine,phellodendrine,baicalein)and key targets associated with diabetic foot ulcers(e.g.,EGFR,AKT1,STAT3).In vivo experimental results demonstrated that the wound healing rate was significantly higher in Sanhuang Oil-treated groups compared to the model group(P<0.001).HE staining revealed that the high-dose Sanhuang Oil group exhibited more pronounced epithelial tissue coverage over the wound,reduced inflammatory cell infiltration,and increased collagen deposition and fibroblast proliferation.transcriptomic analysis identified Pdk4,Ttn,Csrp3,Actn2,Myoz2,Tnnc2,Myod1,Myog,Myot,and Myf6 as key regulatory proteins involved in promoting wound healing.Conclusion:Sanhuang Oil promotes wound healing in diabetic ulcer mice,potentially by mitigating inflammation and regulating key targets such as Pdk4 to enhance fibroblast function.These findings provide novel insights into the multi-target,multi-pathway mechanism of Sanhuang Oil for treating diabetic foot ulcers.
摘要Objective:To evaluate the efficacy and safety of QL1206(a denosumab biosimilar to Xgeva■)in breast cancer patients with bone metastasis(BM)through subgroup analysis of a randomized,double-blind phaseⅢtrial(No.NCT04550949).Methods:This subgroup analysis included patients with BM from breast cancer enrolled in a phaseⅢtrial.Patients were randomized(1:1)to receive either three cycles of QL1206 or denosumab(120 mg subcutaneously every 4 weeks).Subsequently,they received 10 cycles of QL1206(120 mg)over 40 weeks,followed by a 20-week safety follow-up.The primary endpoint was the percentage changes from baseline to week 13 in urinary Ntelopeptide corrected for creatinine(u NTx/Cr).Results:The breast cancer cohort consisted of 311 patients.Vertebral involvement(66.4%)was the most prevalent BM site at enrollment,while 27.7%of patients presented with≥3 metastatic bone lesions.At week 13,QL1206 demonstrated a median u NTx/Cr reduction of-69.9%(range:-98.1%-568.0%)vs.-74.3%(range:-97.7%-386.3%)for denosumab.The analysis of covariance revealed comparable least-square means for log-transformed changes:-1.416[95%confidence interval(95%CI):-1.736 to-1.096]vs.-1.501(95%CI:-1.824 to-1.178),yielding an between-group difference of 0.085(90%CI:-0.062-0.232;P=0.343).After a 53-week treatment period,83.6%achieved bone density improvement/disease stabilization.Safety profiles were comparable between groups.Conclusions:QL1206 demonstrated similar efficacy and safety to the reference denosumab in patients with BM from breast cancer,supporting QL1206 as a new option for management of BM from breast cancer.
基金supported by National Key Research and Development Program of China(Grant No.2024YFE0214000)the Natural Science Foundation of Zhejiang Province,(Grant No.ZCLY24C1502)the Key Research Project of Department of Science and Technology of Zhejiang Province,(Grant No.2021C02066-9).
摘要Fruit firmness is a significant trait for blueberry breeding as it affects machinery harvest,consumer preference,and transportability.LOB transcription factors play a vital role in the development of lateral organs and growth in higher plants;yet,few studies on LOB transcription factors have been reported in blueberries.We performed a genome-wide identification analysis of the blueberry LOB gene family.Using fruit at different developmental stages from the firm-flesh cultivar'Star',and the soft-flesh cultivar'O'Neal',the fruit firmness,polygalacturonase(PG)activity,and pectin content of different types were detected.A total of 150 VcLOB genes were identified in the blueberry genome,unevenly distributed across 46 chromosomes.They could be divided into six subfamilies,with members in each subfamily sharing similar gene structures and motifs.Based on the transcriptomic data and fruit firmness of two blueberry cultivars,four VcLOB genes functioning during the critical period of fruit firmness variation were selected,and their expression patterns were dissected,revealing differences in the expression pattern across various tissues and throughout the fruit development stages in blueberries.The fruit firmness of'O'Neal'is significantly lower than that of'Star'from stages S5 to S8 during fruit development.Additionally,the PG activity and water-soluble pectin content in'O'Neal'is significantly higher than those in'Star'.VcLOB107 overexpressed tomato plants exhibited notably higher fruit firmness,lower PG activity,and WSP content compared to the control group,indicating VcLOB107 is a regulator of fruit firmness differences between firm and soft flesh blueberries.
基金supported by the Basic Public Welfare Research Project of Zhejiang Province(No.LGF22H140007)the Research and Development Project of Stomatology Hospital Affiliated to Zhejiang University School of Medicine(No.RD2022JCXK01)+1 种基金the National Natural Science Foundation of China(No.82301072)the Postdoctoral Science Foundation of China(Nos.2021TQ0277 and 2022M722741)。
摘要Peri-implant diseases are characterized by the resorption of hard tissue and the inflammation of soft tissue.Epigenetics refers to alterations in the expression of genes that are not encoded in the DNA sequence,influencing diverse physiological activities,including immune response,inflammation,and bone metabolism.Epigenetic modifications can lead to tissue-specific gene expression variations among individuals and may initiate or exacerbate inflammation and disease predisposition.However,the impact of these factors on peri-implantitis remains inconclusive.To address this gap,we conducted a comprehensive review to investigate the associations between epigenetic mechanisms and peri-implantitis,specifically focusing on DNA methylation and microRNAs(miRNAs or miRs).We searched for relevant literature on PubMed,Web of Science,Scopus,and Google Scholar with keywords including“epigenetics,”“peri-implantitis,”“DNA methylation,”and“microRNA.”DNA methylation and miRNAs present a dynamic epigenetic mechanism operating around implants.Epigenetic modifications of genes related to inflammation and osteogenesis provide a new perspective for understanding how local and environmental factors influence the pathogenesis of peri-implantitis.In addition,we assessed the potential application of DNA methylation and miRNAs in the prevention,diagnosis,and treatment of peri-implantitis,aiming to provide a foundation for future studies to explore potential therapeutic targets and develop more effective management strategies for this condition.These findings also have broader implications for understanding the pathogenesis of other inflammation-related oral diseases like periodontitis.
摘要The eukaryotic cytochrome P450 ferulate-5-hydroxylase(F5H),a membrane-bound protein,plays a critical role in lignin synthesis involved in the biosynthesis of 5-Hydroxyferulic acid(5-HFA)from ferulic acid,with 5-HFA offering enhanced antioxidant properties.However,there is challenging to engineer recombinants for 5-HFA synthesis by expressing F5H in Escherichia coli.In this work,we co-expressed F5H derived from Arabidopsis thaliana(AtF5H)and NADPH-dependent cytochrome P450 reductase(CPR)in E.coli,and successfully synthesized ortho-hydroxylated ferulic acid.Simultaneously,by modifying the N-terminal regions of membrane proteins,we increased the concentration of product 5-HFA to 63.6 mg/L.Ferulic acid,utilized as the substrate,was extracted from discarded agricultural by-products,demonstrating a sustainable approach to valorizing agricultural waste.This work also advances the application of plant-derived membrane-bound proteins for the production of plant secondary metabolites in E.coli.
基金supported by the National Natural Science Foundation of China (81371362, 81641125, and 81500629)the Scientific Research Foundation of Heilongjiang Province, China (LC2017040)+1 种基金the Science Fund of Heilongjiang Provincial Health and Family Planning Commission, China (2016357 and 2016385)the Basic Research Operating Expenses Program of Heilongjiang Provincial Universities, China (2017- KYYWFMY0661)
摘要A previous study has indicated that Krüppel-like factor 7(KLF7), a transcription factor that stimulates Schwann cell(SC) proliferation and axonal regeneration after peripheral nerve injury, is a promising therapeutic transcription factor in nerve injury. We aimed to identify whether inhibition of micro RNA-146 b(mi R-146 b)affected SC proliferation, migration, and myelinated axon regeneration following sciatic nerve injury by regulating its direct target KLF7. SCs were transfected with mi RNA lentivirus, mi RNA inhibitor lentivirus, or KLF7 si RNA lentivirus in vitro. The expression of mi R146 b and KLF7,as well as SC proliferation and migration, were subsequently evaluated. In vivo, an acellular nerve allograft(ANA) followed by injection of GFP control vector or a lentiviral vector encoding an mi R-146 b inhibitor was used to assess the repair potential in a model of sciatic nerve gap. mi R-146 b directly targeted KLF7 by binding to the 30-UTR, suppressing KLF7. Up-regulation of mi R-146 b and KLF7 knockdown significantly reduced the proliferation and migration of SCs, whereas silencing mi R-146 b resulted in increased proliferation and migration. KLF7 protein was localized in SCs in which mi R-146 b was expressed in vivo.Similarly, 4 weeks after the ANA, anti-mi R-146 b increased KLF7 and its target gene nerve growth factor cascade, promoting axonal outgrowth. Closer analysis revealed improved nerve conduction and sciatic function index score, and enhanced expression of neurofilaments, P0(anti-peripheral myelin), and myelinated axon regeneration. Our findings provide new insight into the regulation of KLF7 by mi R-146 b during peripheral nerve regeneration and suggest a potential therapeutic strategy for peripheral nerve injury.
基金the National Natural Science Foundation of China,No.81302124Shandong Key R and D Program No.2017GSF218038Shandong Provincial Natural Science Foundation,No.ZR2014HP065
摘要BACKGROUND Hepatocellular carcinoma(HCC) is the third leading cause of death from malignant tumors worldwide. More than 50% of HCC cases occur in China. The prognosis remains poor and overall efficacy is still unsatisfactory. Chemotherapy resistance is the most important reason for the poor outcome. Much progress has been made in the study of chemotherapy resistance of HCC;however, the specific mechanisms of progression of HCC have still only been partially established.Therefore, the mechanism of chemotherapy resistance in HCC requires more research.AIM To investigate the effect of miR-34 a expression on the growth inhibition of HepG2 cells by doxorubicin.METHODS A recombinant lentiviral vector containing miR-34 a was constructed and transfected into HepG2 cells. The expression of miR-34 a was detected by reverse transcription-polymerase chain reaction(commonly known as RT-PCR) before and after transfection. Cells were exposed to 2 μM doxorubicin or phosphatebuffered saline before and after transfection. Cell viability in each group was detected by MTT assay, and cell cycle and apoptosis were detected by flow cytometry. Changes in expression levels of phospho(p)-p53, sirtuin(SIRT) 1,cyclin D1, cyclin-dependent kinase(CDK) 4, CDK6, BCL-2, multidrug resistance protein(MDR) 1/P glycoprotein(P-gp), and AXL were detected by Western blotting.RESULTS Recombinant lentiviral vector LV-hsa-mir-34 a was successfully constructed by restriction endonuclease digestion and sequencing. RT-PCR showed that expression of miR-34 a in HepG2 cells was significantly upregulated after transfection(P < 0.01). MTT assay showed that growth of HepG2 cells was inhibited after upregulation of miR-34 a, and viability was significantly decreased after combined treatment with doxorubicin(P < 0.01). Flow cytometry showed that the number of HepG2 cells in G1 phase increased, and G1 phase arrest was more obvious after intervention with doxorubicin(P < 0.01). The apoptosis rate of HepG2 cells was increased after upregulation of miR-34 a, and became more obvious after intervention with doxorubicin(P < 0.01). Western blotting showed that upregulation of miR-34 a combined with treatment with doxorubicin caused significant changes in the expression levels of p-p53, SIRT1, cyclin D1, CDK4,CDK6, BCL-2, MDR1/P-gp and AXL proteins(P < 0.01).CONCLUSION MiR-34 a may enhance the inhibitory effect of doxorubicin by downregulating MDR1/P-gp and AXL, which may be related to p53 expression.
基金financially supported by the National Natural Science Foundation of China(No.21104047)the Outstanding Young Innovative Fund of Xinjiang Bingtuan,China(No.2010JC25)
摘要Removal of noxious dyes is gaining public and technological attention. Herein grafting polymerization was employed to produce a novel adsorbent using acrylic acid and carboxymethyl cellulose for dye removal. Scanning electron microscopy and Fourier-transform infrared spectroscopy verified the adsorbent formed under optimized reaction conditions. The removal ratio of adsorbent to Methyl Orange, Disperse Blue 2BLN and malachite green chloride reached to 84.2%, 79.6% and 99.9%, respectively. The greater agreement between the calculated and experimental results suggested that pseudo second-order kinetic model better represents the kinetic adsorption data. Equilibrium adsorptions of dyes were better explained by the Temkin isotherm. The results implied that this new cellulose-based absorbent had the universaiity for removal of dyes through the chemical adsorption mechanism.
基金supported by the Key Talent Project of Gansu Provincial Party Committee Organization Department Funding,China(2023RCXM23)the Industrial Support of Gansu Provincial Department of Education Funding,China(2021CYZC-55)the Key Research and Development Projects of Gansu Provincial Funding,China(21YF5NA090)。
摘要Salt stress is a typical abiotic stress in plants that causes slow growth,stunting,and reduced yield and fruit quality.Fertilization is necessary to ensure proper crop growth.However,the effect of fertilization on salt tolerance in grapevine is unclear.In this study,we investigated the effect of nitrogen fertilizer(0.01 and 0.1 mol L-1NH4NO3)application on the salt(200 mmol L-1NaCl)tolerance of grapevine based on physiological indices,and transcriptomic and metabolomic analyses.The results revealed that 0.01 mol L-1NH4NO3 supplementation significantly reduced the accumulation of superoxide anion(O2-·),enhanced the activities of superoxide dismutase(SOD)and peroxidase(POD),and improved the levels of ascorbic acid(AsA)and glutathione(GSH)in grape leaves compared to salt treatment alone.Specifically,joint transcriptome and metabolome analyses showed that the differentially expressed genes(DEGs)and differentially accumulated metabolites(DAMs)were significantly enriched in the flavonoid biosynthesis pathway(ko00941)and the flavone and flavonol biosynthesis pathway(ko00944).In particular,the relative content of quercetin(C00389)was markedly regulated by salt and nitrogen.Further analysis revealed that exogenous foliar application of quercetin improved the SOD and POD activities,increased the AsA and GSH contents,and reduced the H2O2 and O2-·contents.Meanwhile,10 hub DEGs,which had high Pearson correlations(R2>0.9)with quercetin,were repressed by nitrogen.In conclusion,all the results indicated that moderate nitrogen and quercetin application under salt stress enhanced the antioxidant system defense response,thus providing a new perspective for improving salt tolerance in grapes.
基金This research was supported by grants from the Shanghai Municipal Health Commission(SMHC)(2019ZB0201)Shanghai Clinical Research Center for Mental Health(19MC1911100)SMHC Clinical Research Center(CRC2018ZD03).
摘要Background Obsessive-compulsive disorder(OCD)is considered a very debilitating disorder with severe loss of quality of life and income.Aims This study estimates the quality of life and economic consequences of OCD in China.Methods The research team interviewed 639 patients with OCD in 13 hospitals in 12 cities in China.The direct method was used to get the direct cost of OCD.Indirect costs associated with OCD were estimated using the human capital approach.Linear regression analysis was conducted for quality of life and generalised linear model analysis was conducted for total cost.Sensitivity analysis was used to analyse the uncertainty of total cost.Results The mean quality of life score for OCD was 52.78(20.46).The annual total cost of OCD per capita was 24503.78(95%CI:22621.53 to 26386.03)renminbi(RMB)(US$3465.88(95%CI:US$3199.65 to US$3732.11)).The annual cost of OCD in China was estimated to be 37.74 billion(95%CI:34.95 billion to 40.53 billion)RMB(equal to US$5.34 billion(95%CI:US$4.94 billion to US$5.73 billion)).Sensitivity analysis showed that the total annual cost of OCD in China was between 23.15 billion RMB(US$3.27 billion)and 370.00 billion RMB(US$52.33 billion).Worse social function status,more psychiatric symptoms and higher Yale Brown Obsessive-Compulsive Scale(Y-BOCS)score were associated with worse quality of life.The numbers of clinic visits and hospitalisations,socioeconomic status,education,Y-BOCS scores and age were found to be significantly associated with total cost.Conclusions OCD is associated with low quality of life and high costs in China.The findings call for concerted efforts to improve services for patients with OCD.Improvements may include early detection and diagnosis,the provision of evidence-based treatments and relapse prevention strategies.
基金support from the National Natural Science Foundation of China(No.51701219)the Doctoral Scientific Research Foundation of Liaoning Province(No.20180540133)the Special Project on Information Technology of the Chinese Academy of Sciences(No.XXH13506–304)。
摘要The effects of heating rate on the alloy element partitioning and mechanical properties during the phase transformation ofα→βin Ti-6Al-4 V alloy under solution treatment have been investigated by the experiments and phase field simulations,which reveal the evolutions of microstructure and compositions at the non-equilibrium state and well verify the experimental results.The specific results indicate that the compositions measured through electron probe micro-analysis(EPMA)under a lower heating rate are close to the equilibrium ones corresponding to the solution temperature.Heating up to the target solution temperature,as the heating rate increases,the Al content decreases and V increases in the primaryα(αp)grain with a larger size,the volume fraction ofαpincreases and the composition gradient betweenαpandβphases gets steeper.The interrelated relationship among the diffusion,compositions,solution temperature and free energy of the system has been discussed in detail.Moreover,increasing the heating rate(~20.0 K/min)may help to improve the mechanical properties of the alloy by mainly adjusting theαp/β;volume fractions,αpparticle size and secondaryα(αp)size during the process of heating up to the solution temperature.These results may shed some light on the optimization of the knowledge-based heat treatment route.
基金The financial support from the National Natural Science Foundation of China(Nos.32072445 and 21762012)the Program of Introducing Talents to Chinese Universities(No.D20023)+2 种基金the Natural Science research project of Guizhou Education Department(No.KY(2018)009)the Graduate Research Fund in Guizhou Province(No.YJSKYJJ[2021]038)the specific research fund of The Innovation Platform for Academicians of Hainan Province(No.SQ2020PTZ0009)。
摘要Indole is a biologically active compound formed by the fusion of benzene and pyrrole,and it is widely found in natural products and drugs.Due to the unique structure and properties of indole,its derivatives often exhibit distinctive physiological activities,which has led to widespread attention in the field of pesticide development.Analyzing the design strategies and structure-activity relationships(SARs)of compounds is a crucial step in developing novel pesticides.This review mainly summarizes indole compounds with plant growth regulating,antiviral,fungicidal,herbicidal,and insecticidal activities,with the aim of providing new insights into the discovery and mechanism of action of novel indole-based pesticides.
基金supported by the National Natural Science Foundation of China,No.81870977 (to YW)the Natural Science Foundation of Heilongjiang of China,No.H2018068 (to WYL)+3 种基金the Basic Research Operating Expenses Program of Heilongjiang Provincial Universities of China,No.2019-KYYWFMY-0018 (to WYL)the Graduate Innovative Research Projects of Mudanjiang Medical College of China,No.YJSCX-MY22 (to DM)Key projects of Education Department of Hebei Province of China,No.ZD2020178 (to XMF)Hebei Key Laboratory of Nerve Injury and Repair of China (to XMF)。
摘要Our previous study has shown that the transcription factor Krüppel-like factor 7(KLF7) promotes peripheral nerve regeneration and motor function recovery after spinal cord injury.KLF7 also participates in traumatic brain injury,but its regulatory mechanisms remain poorly understood.In the present study,an HT22 cell model of traumatic brain injury was established by stretch injury and oxygenglucose deprivation.These cells were then transfected with an adeno-associated virus carrying KLF7(AAV-KLF7).The results revealed that,after stretch injury and oxygen-glucose deprivation,KLF7 greatly reduced apoptosis,activated caspase-3 and lactate dehydrogenase,downregulated the expression of the apoptotic markers B-cell lymphoma 2(Bcl-2)-associated X protein(Bax) and cleaved caspase-3,and increased the expression of βIII-tubulin and the antiapoptotic marker Bcl-2.Furthermore,KLF7 overexpression upregulated Janus kinase 2(JAK2) and signal transducer and activator of transcription 3(STAT3) phosphorylation in HT22 cells treated by stretch injury and oxygenglucose deprivation.Immunoprecipitation assays revealed that KLF7 directly participated in the phosphorylation of STAT3.In addition,treatment with AG490,a selective inhibitor of JAK2/STAT3,weakened the protective effects of KLF7.A mouse controlled cortical impact model of traumatic brain injury was then established.At 30 minutes before modeling,AAV-KLF7 was injected into the ipsilateral lateral ventricle.The protein and m RNA levels of KLF7 in the hippocampus were increased at 1 day after injury and recovered to normal levels at 3 days after injury.KLF7 reduced ipsilateral hippocampal atrophy,decreased the injured cortex volume,downregulated Bax and cleaved caspase-3 expression,and increased the number of 5-bromo-2'-deoxyuridine-positive neurons and Bcl-2 protein expression.Moreover,KLF7 transfection greatly enhanced the phosphorylation of JAK2 and STAT3 in the ipsilateral hippocampus.These results suggest that KLF7 may protect hippocampal neurons after traumatic brain injury through activation of the JAK2/STAT3 signaling pathway.The study was approved by the Institutional Review Board of Mudanjiang Medical University,China(approval No.mdjyxy-2018-0012) on March 6,2018.
基金supported by the National Natu-ral Science Foundation of China(Nos.32171340,81772343 and 81771990)the Key Medical Program of Science and Technol-ogy Development of Shanghai(No.20S31900400)the National Science Foundation of Shanghai(No.21ZR1447900).
摘要Design of artificial ligaments possessing both osteogenic activity and antibacterial effect that promotes ligament-bone healing and prevents bacterial infection in bone tunnels for anterior cruciate ligament(ACL)reconstruction remains a significant challenge.In this study,black tantalic oxide(BTO)submicro-particles with oxygen vacancies and structure defects were fabricated by using traditional white tan-talic oxide(WTO)through magnesium thermal reduction(MTR)method,and BTO was coated on polyetheretherketone(PEEK)fibers(PKF),which were woven into fabrics(PBT)as artificial ligaments.PBT with BTO coating exhibited excellent photothermal performance,which possessed not only antibac-terial effects in vitro but also anti-infective ability in vivo.PBT with optimized surface properties(e.g.,submicro-topography and hydrophilicity)not only significantly facilitated rat bone mesenchymal stem cells(BMSC)responses(e.g.,proliferation and osteogenic differentiation)in vitro but also stimulated new bone formation for ligament-bone healing in vivo.The presence of oxygen vacancies and structure de-fects in BTO did not change the surface properties and osteogenic activity of BPT while displaying an outstanding photothermal antibacterial effect.In summary,BPT with osteogenic activity and photother-mal antibacterial effect promoted bone regeneration and prevented bacterial infection,thereby promoting ligament-bone healing.Therefore,PBT would have tremendous potential as a novel artificial ligament for ACL reconstruction.
基金the National Key R&D Program of China(2017YFC1308700)Peking Union Medical College Discipline Development Project(201920200303).
摘要Objective To characterize Chinese families in which both parents and at least one child are diagnosed with malignant diseases and provide reference for cancer screening or early detection in people whose both parents are diagnosed with cancer.Methods Medical records of all clients to the center of cancer screening and prevention of the National Cancer Center/Cancer Hospital between January 2008 and February 2018 were screened to select families in which both parents and at least one child were diagnosed with malignant diseases.The cancer profiles of fathers,mothers,sons and daughters,their age distribution at diagnosis,and similarity of cancers between two generations were analyzed.The proportions of each cancer in males and females of the cohort were compared with corresponding data from the National Cancer Center Registry of China(NCCRC)in 2013.Results Totally 13S families were identified from records of 33200 clients.Proportion of lung cancer in fathers(40/135,29.6%)and in mothers(38/135,28.1%)were higher than the national data(23.9%in males and 14.9%in females,respectively).The proportion of breast cancer in daughters(35/109,32.1%)was higher than that of mothers(14/135,10.4%)and the national data(17.1%),In 71 father-son pairs of cancer,46.5%(33/71)were of the same systematic disease,and 16.9%(12/71)were of the same cancer.These two indexes were 31.2%(n=34)and 10.1%(n=l 1),respectively in the 109 father-daughter pairs of cancer,36.6%(n=26)and 8.5%(n=6)respectively in the 71 mother-son pairs of cancer,and 31.2%(n=34)and 20.2%(n=20)respectively in the 109 mother-daughter pairs of cancer.Sons were more likely to suffer from cancers originated from the same system as father s cancer than daughters(χ2=4.299,P<0.05),and daughters were more likely to suffer from the same cancer as their mother's cancer than sons(χ2=4.506,P<0.05).The age(mean±standard deviation)of the daughters(52.4±12.7)and the sons(59.4±10.9)at diagnosis were significantly younger than the fathers(65.5±12.2)and the mothers(65.7±12.5)(all P<0.001)・Conclusions For people whose both parents are diagnosed as cancer,screening or early detection examinations should cover a full range of cancers rather than the cancers their father and mother have suffered,or cancers stemmed from the same system as their parents cancers.We suggest screening or early detection program for these special population start earlier than that for the general population,with emphasis on cancers derived from digestive system for males and women-specific cancers,i.e.,breast cancer,ovarian cancer,cervical cancer and uterine cancer for females.
基金financially supported by the following programs:National Natural Science Foundation of China(82122014,82071085,82001045,82201122,82020108011)National Key Research and Development Program of China(2018YFA0703000)+6 种基金China Postdoctoral Science Foundation(2023M743009)Zhejiang Provincial Natural Science Foundation of China(LR21H140001,LQ21H140002,LR22H140005)Zhejiang Basic Public Welfare Research Project(LGF22H140007)Medical Technology and Education of Zhejiang Province of China(2018KY501)Foundation of Zhejiang University(2022QZJH55)Zhejiang University of Stomatology Postdoctoral Scientific Research Foundation(2023PDF013)Foundation of Stomatology Hospital Affiliated to Zhejiang University School of Medicine(RD2022JCXK01)。
摘要The development,progression,and curative efficacy of head and neck squamous cell carcinoma(HNSCC)are influenced by complex interactions between epithelial and immune cells.Nevertheless,the specific changes in the nature of these interactions and their underlying molecular mechanisms in HNSCC are not yet fully understood.Cuproptosis,a form of programmed cell death that is dependent on copper,has been implicated in cancer pathogenesis.However,the understanding of cuproptosis in the context of HNSCC remains limited.In this study,we have discovered that cuproptosis-related long noncoding RNAs(CRLs)known as JPX play a role in promoting the expression of the oncogene urokinase-type plasminogen activator(PLAU)by competitively binding to miR-193b-3p in HNSCC.The increased activity of the JPX/miR-193b-3p/PLAU axis in malignant epithelial cells leads to enhanced cell proliferation,migration,and invasion in HNSCC.Moreover,the overexpression of PLAU in tumor epithelial cells facilitates its interaction with the receptor PLAUR,predominantly expressed on macrophages,thereby influencing the abnormal epithelial–immune interactome in HNSCC.Notably,the JPX inhibitor Axitinib and the PLAU inhibitor Palbociclib may not only exert their effects on the JPX/miR-193b-3p/PLAU axis that impacts the malignant tumor behaviors and the epithelial–immune cell interactions but also exhibit synergistic effects in terms of suppressing tumor cell growth and arresting cell cycle by targeting epidermal growth factor receptor(EGFR)and cyclin-dependent kinase(CDK4/6)for the treatment of HNSCC.