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Meiotic nuclear divisions 1 suppresses the proliferation and invasion of pancreatic cancer cells via regulating H2A.X variant histone

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BIOcell 2024年第1期48卷 111-122页

作者： DONGQIN WANG YAN SHI ZHIQIANG WANG JING ZHANG LUYAO WANG HONGYU MA SHUHUA SHI XIAOFU LIAN HUA HUANG XIAOJING WANG CHAOQUN LIAN Anhui Province Key Laboratory of Clinical and Preclinical Research in Respiratory Disease Molecular Diagnosis CenterThe Department of Pulmonary Critical Care MedicineFirst Affiliated Hospital of Bengbu Medical CollegeBengbu233030China department of genetics School of Life SciencesBengbu Medical CollegeBengbu233000China department of Clinical Medicine Bengbu Medical CollegeBengbu233030China Research center of Clinical Laboratory science Bengbu Medical CollegeBengbu233030China

Introduction:Among all malignant tumors of the digestive system,pancreatic carcinoma exhibits the highest mortality ***,prevention and effective treatment are urgent issues that need to be ***:The study focused on meiotic nuclear divisions 1(MND1),integrating data from the Gene Expression Profiling Interactive Analysis(GEPIA)database with prognostic survival ***,experiments at cellular level were employed to demonstrate the effect of MND1 on the proliferation and migration of *** small-molecule inhibitor of MND1 was used to suppress the migration of PC cells by knocking down MND1 using small interfering RNA(siRNA)in Patu-8988 and Panc1 cell ***:The results of cell Counting Kit-8 indicated that the suppression of MND1 resulted in a decrease in cell *** healing and Transwell assays revealed that MND1 knockdown reduced cell migration and *** cytometry revealed that inhibiting MND1 hindered the cell ***,MND1 could stimulate the proliferation,migration,and invasion of Patu-8988 and Panc1 cells by increasing the expression of ***,MND1 had a positive effect on H2AFX expression in PC *** MND1 expression suggests the low overall survival rate of individuals diagnosed with ***:These findings suggest that MND1 has the potential to be a gene with the ability to accurately diagnose and treat PC.

关键词： Pancreatic carcinoma MND1 H2AFX cell cycle

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Sperm acrosin activity may be a useful factor in choosing between ICSI and IVF for infertile male patients

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Asian Journal of Andrology 2024年第1期26卷 85-90页

作者： Ye-Na Hu Liang Hu Xin-Yu Yin Huan Zhang Yang-Qin Peng Gang Liu Ge Lin Wei-Na Li The Institute of Reproductive and Stem cell Engineering School of Basic Medical ScienceCentral South UniversityChangsha 410008China department of Andrology Reproductive and Genetic Hospital of CITiC-XiangyaChangsha 410013China Clinical Research center for Reproduction and genetics in Hunan Province Changsha 410013China Hunan Guangxiu Hi-tech Life Technology Co. Ltd.Changsha 410013China

The clinical applications of acrosin activity are *** analyzed 61578 male partners in infertile couples who visited the outpatient department of the Reproductive and Genetic Hospital of CITIC-Xiangya(Changsha,China)between August 2014 and December 2019 to determine the reference ranges and thresholds for acrosin activity in infertile Chinese men;to determine whether correlations exist between acrosin activity and age,sperm concentration,sperm morphology,or sperm motility;and to evaluate whether acrosin activity could serve as an effective prognostic indicator for choosing between in vitro fertilization(IvF)and intracytoplasmic sperm injection(icsl)in the *** cut-off value for the normal reference range of acrosin activity for male partners in infertile couples was 24.78μlU per 106 *** was no significant association between acrosin activity and age,sperm concentration,semen volume,total sperm count,progressive motility,or total motile spermatozoa.A weak positive correlation was found between acrosin activity and normal sperm *** was a statistically significant difference in abnormal acrosome morphology between the group with high acrosin activity(>24.78μlU per 106 sperm)and the group with low acrosin activity(<24.78μlU per 106 sperm).The group with a low IVF fertilization rate had a high index of abnormal acrosomal morphology at 21.2%,while the group with a high IVF fertilization rate had a low index of 0.2%.At an acrosin activity of<24.78μlU per 10 sperm,in one cycle of the same patient,the fertilization rate,normal fertilization rate,and good-quality embryo rate for Icsl were significantly higher than those for ***,the most promising application of acrosin activity could be in the selection of IcsI over IVF for infertile male patients with complete fertilization failure or a low fertilization rate.

关键词： acrosin activity fertilization rate ICSI IVF semen parameters

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Inbreeding and genetic load in a pair of sibling grouse species:Tetrastes sewersowi and ***

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Avian Research 2024年第2期15卷 265-270页

作者： Kai Song Tom van der Valk Bin Gao Peter Halvarsson Yun Fang Wendong Xie Siegfried Klaus Zhiming Han Yue-Hua Sun Jacob Hoglund Key Laboratory of Animal Ecology and Conservation biology Institute of ZoologyChinese Academy of SciencesBeijing100101China Animal Ecology Department of Ecology and GeneticsUppsala UniversityNorbyvagen 18DUppsala75236Sweden department of cell and Molecular biology Uppsala75273Sweden Unit of Parasitology Department of Biomedicine and Veterinary Public HealthSwedish University of Agricultural SciencesPO Box 7036Uppsala75007Sweden Lindenhohe 5 JenaD-07749Germany The State Key Laboratory of Reproductive biology Institute of ZoologyChinese Academy of SciencesBeijing100101China

Genetic load and inbreeding are recognized as important factors to be considered in conservation *** levels of both can increase the risk of population extinction by negatively impacting fitness-related characters in many species of plants and animals,including humans(inbreeding depression).Genomic tech-niques are increasingly used in measuring and understanding genetic load and inbreeding and their importance in evolution and *** used whole genome resequencing data from two sibling grouse species in subarctic Eurasia to quantify *** found a large range of inbreeding measured as FROH(fraction of runs of homozygosity)in individuals from different populations of Chinese Grouse(Tetrastes sewerzowi)and Hazel Grouse(***).FROH estimated from genome-wide runs of homozygosity(ROH)ranged from 0.02 to 0.24 among Chinese Grouse populations and from 0.01 to 0.44 in Hazel *** from a population of Chinese Grouse residing in the Qilian mountains and from the European populations of Hazel Grouse(including samples from Sweden,Germany and Northeast Poland)were the most inbred(FROH ranged from 0.10 to 0.23 and 0.11 to 0.44,respectively).These levels are comparable to other highly inbred populations of *** Grouse from northern China and Chinese Grouse residing in the Qinghai-Tibetan Plateau showed relatively lower inbreeding *** of the ratio between deleterious missense mutations and synonymous mutations revealed higher levels in Chinese Grouse as compared to Hazel *** results are possibly explained by higher fixation rates,mutational melt down,in the range-restricted Chinese Grouse compared to the wide-ranging Hazel ***,when we compared the relatively more severe class of loss-of-function muta-tions,Hazel Grouse had slightly higher levels than Chinese Grouse,a result which may indicate that purifying selection(purging)has been more efficient in Chinese Grouse on this class of mutations.

关键词： Genetic load Inbreeding Purifying selection Qinghai-Tibetan Plateau ROH Tetrastes

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Deleterious variants in RNF111 impair female fertility and induce premature ovarian insufficiency in humans and mice

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science China(Life sciences) 2024年第7期67卷 1325-1337页

作者： Chengcheng Song Yingying Qin Yan Li Bingyi Yang Ting Guo Wenqing Ma Dian Xu Keyan Xu Fangfang Fu Li Jin Yanhua Wu Shuyan Tang Xiaojun Chen Feng Zhang Obstetrics and Gynecology Hospital State Key Laboratory of Genetic EngineeringInstitute of Medical Genetics and GenomicsFudan UniversityShanghai 200011China Human Phenome Institute Zhangjiang Fudan International Innovation CenterFudan UniversityShanghai 201203China center for Reproductive Medicine Cheeloo College of MedicineShandong UniversityJinan 250021China State Key Laboratory of Reproductive Medicine and Offspring health Key Laboratory of Reproductive Endocrinology of Ministry of EducationNational Research Center for Assisted Reproductive Technology and Reproductive GeneticsShandong Key Laboratory of Reproductive MedicineShandong Provincial Clinical Research Center for Reproductive HealthShandong UniversityJinan 250021China department of Obstetrics and Gynecology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China National Demonstration center for Experimental biology Education School of Life SciencesFudan UniversityShanghai 200433China department of Gynecology the Tenth People’s Hospital of Tongji UniversityShanghai 200072China Soong Ching Ling Institute of Maternity and Child health International Peace Maternity and Child Health Hospital of China Welfare InstituteShanghai 200030China

Premature ovarian insufficiency(POI)is a heterogeneous female disorder characterized by the loss of ovarian function before the age of *** represents a significant detriment to female ***,the known POI-causative genes currently account for only a fraction of *** elucidate the genetic factors underlying POI,we conducted whole-exome sequencing on a family with three fertile POI patients and identified a deleterious missense variant in *** a subsequent replication study involving 1,030 POI patients,this variant was not only confirmed but also accompanied by the discovery of three additional predicted deleterious RNF111 *** variants collectively account for eight cases,representing 0.78%of the study cohort.A further study involving 500 patients with diminished ovarian reserve also identified two additional RNF111 ***,RNF111 encodes an E3 ubiquitin ligase with a regulatory role in the TGF-β/BMP signaling *** analysis revealed that RNF111/RNF111 is predominantly expressed in the oocytes of mice,monkeys,and *** further investigate the functional implications of RNF111 variants,we generated two mouse models:one with a heterozygous missense mutation(Rnf111+/M)and another with a heterozygous null mutation(Rnf111^(+/-)).Both mouse models exhibited impaired female fertility,characterized by reduced litter sizes and small ovarian ***,RNA-seq and quantitative proteomics analysis unveiled that Rnf111 haploinsufficiency led to dysregulation in female gonad development and negative regulation of the BMP signaling pathway within mouse *** conclusion,our findings strongly suggest that monoallelic deleterious variants in RNF111 can impair female fertility and induce POI in both humans and mice.

关键词： POI RNF111 female fertility ovarian reserve

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Harnessing innate immune pathways for therapeutic advancement in cancer

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Signal Transduction and Targeted Therapy 2024年第4期9卷 1506-1564页

作者： Ankang Hu Li Sun Hao Lin Yuheng Liao Hui Yang Ying Mao department of Neurosurgery Huashan HospitalFudan UniversityShanghaiP.R.China Institute for Translational Brain Research Shanghai Medical CollegeFudan University ShanghaiPR.China National center for Neurological Disorders Huashan HospitalShanghai Medical CollegeFudan UniversityShanghaiP.R.China Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration Shanghai Clinical Medical Center of NeurosurgeryNeurosurgical Institute of Fudan UniversityHuashan HospitalShanghai Medical CollegeFudan UniversityShanghaiP.R.China State Key Laboratory of medical Neurobiology and MOE Frontiers center for Brain science and MOE Frontiers center for Brain science Institutes of Brain ScienceShanghai Medical CollegeFudan UniversityShanghaiP.R.China Shanghai Key Laboratory of medical Epigenetics International Co-laboratory of Medical Epigenetics and Metabolism(Ministry of Science and Technology)and Key Laboratory of Metabolism and Molecular Medicine(Ministry of Education)and Molecular and Cell Biology LabInstitutes of Biomedical SciencesShanghai Medical College of Fudan UniversityShanghaiP.R.China

The innate immune pathway is receiving increasing attention in cancer *** pathway is ubiquitous across various cell types,not only in innate immune cells but also in adaptive immune cells,tumor cells,and stromal *** targeting the innate immune pathway have shown profound changes in the tumor microenvironment(TME)and improved tumor prognosis in preclinical ***,to date,the clinical success of drugs targeting the innate immune pathway remains ***,recent studies have shown that activation of the innate immune pathway can paradoxically promote tumor *** uncertainty surrounding the therapeutic effectiveness of targeted drugs for the innate immune pathway is a critical issue that needs immediate *** this review,we observe that the role of the innate immune pathway demonstrates heterogeneity,linked to the tumor development stage,pathway status,and specific cell *** propose that within the TME,the innate immune pathway exhibits multidimensional *** diversity is fundamentally rooted in cellular heterogeneity and is manifested as a variety of signaling *** pro-tumor effect of innate immune pathway activation essentially reflects the suppression of classical pathways and the activation of potential pro-tumor alternative *** our understanding of the tumor's innate immune pathway network and employing appropriate targeting strategies can enhance our ability to harness the anti-tumor potential of the innate immune pathway and ultimately bridge the gap from preclinical to clinicalapplication.

关键词： drugs therapeutic innate

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Phase separation of S-RNase promotes self-incompatibility in Petunia hybrida

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Journal of Integrative Plant biology 2024年第5期66卷 986-1006页

作者： Huayang Tian Hongkui Zhang Huaqiu Huang Yu'e Zhang Yongbiao Xue The State Key Laboratory of Plant cell and Chromosome Engineering Institute of Genetics and Developmental Biologythe Chinese Academy of SciencesBeijing 100101China University of the Chinese Academy of sciences Beijing 100049China Beiing Institute of Genomics Chinese Academy of SciencesNational Center for BioinformationBeijing 100101China

Self-incompatibility(SI)is an intraspecific reproductive barrier widely present in *** SI system with the broadest occurrence in angiosperms is based on an S-RNase linked to a cluster of multiple S-locus F-box(SLF)genes found in the Solanaceae,Plantaginaceae,Rosaceae,and *** studies reveal that non-self S-RNase is degraded by the Skip Cullin F-box(SCF)SLF-mediated ubiquitin–proteasome system in a collaborative manner in Petunia,but how self-RNase functions largely remains ***,we show that S-RNases form S-RNase condensates(SRCs)in the self-pollen tube cytoplasm through phase separation and the disruption of SRC formation breaks SI in self-incompatible Petunia *** further find that the pistil SI factors of a small asparagine-rich protein HT-B and thioredoxin h together with a reduced state of the pollen tube all promote the expansion of SRCs,which then sequester several actin-binding proteins,including the actin polymerization factor PhABRACL,the actin polymerization activity of which is reduced by S-RNase in ***,we find that S-RNase variants lacking condensation ability fail to recruit PhABRACL and are unable to induce actin foci formation required for pollen tube growth *** together,our results demonstrate that phase separation of S-RNase promotes SI response in ***,revealing a new mode of S-RNase action.

关键词： self-incompatibility S-RNase phase separation

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Dysregulated N6-methyladenosine modification in peripheral immune cells contributes to the pathogenesis of amyotrophic lateral sclerosis

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Frontiers of Medicine 2024年第2期18卷 285-302页

作者： Di He Xunzhe Yang Liyang Liu Dongchao Shen Qing Liu Mingsheng Liu Xue Zhang Liying Cui department of Neurology Peking Union Medical College Hospital(PUMCH)Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing100730China medical Doctor Program Chinese Academy of Medical Science and Peking Union Medical CollegeBeijing100730China McKusick-Zhang center for Genetic Medicine State Key Laboratory of Medical Molecular BiologyInstitute of Basic Medical Sciences Chinese Academy of Medical SciencesSchool of Basic MedicinePeking Union Medical CollegeBeijing100730China Neuroscience center Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing100730China

Amyotrophic lateral sclerosis(ALS)is a progressive neurogenerative disorder with uncertain *** evidence implicates N6-methyladenosine(m6A)modification in ALS *** RNA immunoprecipitation sequencing(MeRIP-seq)and liquid chromatography–mass spectrometry were utilized for m6A profiling in peripheral immune cells and serum proteome analysis,respectively,in patients with ALS(n=16)and controls(n=6).The single-cell transcriptomic dataset(GSE174332)of primary motor cortex was further analyzed to illuminate the biological implications of differentially methylated genes and cell communication *** of peripheral immune cells revealed extensive RNA hypermethylation,highlighting candidate genes with differential m6A modification and expression,including C-X3-C motif chemokine receptor 1(CX3CR1).In RAW264.7 macrophages,disrupted CX3CR1 signaling affected chemotaxis,potentially influencing immune cell migration in *** proteome analysis demonstrated the role of dysregulated immune cell migration in *** type-specific expression variations of these genes in the central nervous system(CNS),particularly microglia,were *** communication between neurons and glial cells was selectively altered in ALS *** integrated approach underscores m6A dysregulation in immune cells as a potential ALS contributor.

关键词： amyotrophic lateral sclerosis N^(6)-methyladenosine epi-transcriptome proteome single cell RNA sequencing analysis CX3CR1

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Temperature regulates negative supercoils to modulate meiotic crossovers and chromosome organization

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science China Life sciences 2024年

作者： Yingjin Tan Taicong Tan Shuxian Zhang Bo Li Beiyi Chen Xu Zhou Ying Wang Xiao Yang Binyuan Zhai Qilai Huang Liangran Zhang Shunxin Wang Research Unit of Gametogenesis and health of ART-Offspring Chinese Academy of Medical Sciences (No.2021RU001) Advanced medical Research Institute Shandong University State Key Laboratory of Reproductive Medicine and Offspring health Center for Reproductive Medicine Institute of Women Children and Reproductive Health Shandong University Shandong Provincial Key Laboratory of Animal cell and Developmental biology School of Life Sciences Shandong University center for cell Structure and Function Shandong Provincial Key Laboratory of Animal Resistance Biology College of Life Sciences Shandong Normal University National Research center for Assisted Reproductive Technology and Reproductive genetics Shandong University Key Laboratory of Reproductive Endocrinology (Shandong University) Ministry of Education Shandong Technology Innovation center for Reproductive health Shandong Provincial Clinical Research center for Reproductive health Shandong Key Laboratory of Reproductive Medicine Shandong Provincial Hospital Affiliated to Shandong First Medical University

Crossover recombination is a hallmark of meiosis that holds the paternal and maternal chromosomes(homologs) together for their faithful segregation, while promoting genetic diversity of the progeny. The pattern of crossover is mainly controlled by the architecture of the meiotic chromosomes. Environmental factors, especially temperature, also play an important role in modulating crossovers. However, it is unclear how temperature affects crossovers. Here, we examined the distribution of budding yeast axis components(Red1, Hop1, and Rec8)and the crossover-associated Zip3 foci in detail at different temperatures, and found that both increased and decreased temperatures result in shorter meiotic chromosome axes and more crossovers. Further investigations showed that temperature changes coordinately enhanced the hyperabundant accumulation of Hop1 and Red1 on chromosomes and the number of Zip3 foci. Most importantly, temperature-induced changes in the distribution of axis proteins and Zip3 foci depend on changes in DNA negative supercoils. These results suggest that yeast meiosis senses temperature changes by increasing the level of negative supercoils to increase crossovers and modulate chromosome organization. These findings provide a new perspective on understanding the effect and mechanism of temperature on meiotic recombination and chromosome organization, with important implications for evolution and breeding.

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Screening for metastasis-related genes in mouse melanoma cells through sequential tail vein injection

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Biophysics Reports 2024年第1期10卷 15-21页

作者： Qinggang Hao Rui Dong Weiyu Bai Dong Chang Xinyi Yao Yingru Zhang Huangying Xu Huiyan Li Xiang Kui Feng Wang Yan Wang Chengqin Wang Yujie Lei Yan Chen Junling Shen Lei Sang Yan Bai Jianwei Sun center for Life sciences Yunnan Key Laboratory of Cell Metabolism and Diseases State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan School of Life Sciences Yunnan University Key Laboratory of Tumor Immunological Prevention and Treatment of Yunnan Province Yan'an Hospital Affiliated to Kunming Medical University Shandong Provincial Key Laboratory of Animal Resistance biology Collaborative Innovation Center of Cell Biology in Universities of Shandong Center for Cell Structure and Function Institute of Biomedical Science College of Life Sciences Shandong Normal University department of Pathology The Second Affiliated Hospital of Kunming Medical University State Key Laboratory of Bioactive Molecules and Druggability Assessment Institute of Genomic Medicine College of Pharmacy Jinan University department of Pathology School of Basic Medicine Qingdao University department of Thoracic Surgery Yunnan Cancer Hospital & The Third Affiliated Hospital of Kunming Medical University & Yunnan Cancer Center

Tumor metastasis, responsible for approximately 90% of cancer-associated mortality, remains poorly understood. Here in this study, we employed a melanoma lung metastasis model to screen for metastasis-related genes. By sequential tail vein injection of mouse melanoma B16F10 cells and the subsequently derived cells from lung metastasis into BALB/c mice, we successfully obtained highly metastatic B16F15 cells after five rounds of in vivo screening. RNA-sequencing analysis of B16F15 and B16F10 cells revealed a number of differentially expressed genes, some of these genes have previously been associated with tumor metastasis while others are novel discoveries. The identification of these metastasis-related genes not only improves our understanding of the metastasis mechanisms, but also provides potential diagnostic biomarkers and therapeutic targets for metastatic melanoma.

关键词： Melanoma Lung metastasis model Gene screening Tail vein injection

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GTF2H4 regulates partial EndMT via NF-κB activation through NCOA3 phosphorylation in ischemic diseases

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The Innovation 2024年第2期5卷 27-41页

作者： Zheyan Fang Gang Zhao Shuang Zhao Xueting Yu Runyang Feng You-en Zhang Haomin Li Lei Huang Zhenyang Guo Zhentao Zhang Mukaddas Abdurahman Hangnan Hong Peng Li Bing Wu Jinhang Zhu Xin Zhong Dong Huang Hao Lu Xin Zhao Zhaoyang Chen Wenbin Zhang Junjie Guo Hongchao Zheng Yue He Shengying Qin Haojie Lu Yun Zhao Xiangdong Wang Junbo Ge Hua Li department of Cardiology Zhongshan HospitalFudan UniversityShanghai Institute of Cardiovascular DiseasesShanghai 200032China department of Cardiology Zhongshan HospitalFudan UniversityShanghai 200032China department of medical Examination Shanghai Xuhui District Central HospitalShanghai 200031China department of Cardiology and Institute of Clinical Medicine Renmin HospitalHubei University of MedicineShiyan 442000China Clinical Data center Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center for Child HealthHangzhou 310052China department of Molecular Celland Cancer BiologyUniversity of Massachusetts Chan Medical SchoolWorcesterMA 01605USA Bio-X Institute Key Laboratory for The Genetics of Developmental and Neuropsychiatric DisordersShanghai Jiao Tong UniversityShanghai 200030China department of Cardiology Heart Center of Fujian ProvinceFujian Medical University Union HospitalFuzhou 350001China department of Cardiology Sir Run Run Shaw Hospitalaffiliated with Zhejiang University School of MedicineHangzhou 310020China department of Cardiology The Affiliated Hospital of Qingdao UniversityQingdao 266003China department of Cardiology Shanghai Xuhui District Central HospitalShanghai 200031China department of Cardiology Shanghai Eighth People’s HospitalShanghai 200235China department of Chemistry and Institutes of Biomedical sciences Fudan UniversityShanghai 200032China State Key Laboratory of cell biology Shanghai Institute of Biochemistry and Cell BiologyCenter for Excellence in Molecular Cell ScienceChinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghai 200031China School of Life science and Technology Shanghai Tech University100 Haike RoadShanghai 201210China Key Laboratory of Systems health science of Zhejiang Province School of Life ScienceHangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China department of Pulmonary and Critical Care Medicine Zhongshan Hospital

Partial endothelial-to-mesenchymal transition(EndMT)is an intermediate phenotype observed in endothelial cells(ECs)undergoing a transition toward a mesenchymal state to support neovascularization during(patho)physiological ***,we investigated the occurrence of partial EndMT in ECs under hypoxic/ischemic conditions and identified general transcription factor IIH subunit 4(GTF2H4)as a positive regulator of this *** addition,we discovered that GTF2H4 collaborates with its target protein excision repair cross-complementation group 3(ERCC3)to co-regulate partial ***,by using phosphorylation proteomics and site-directed mutagenesis,we demonstrated that GTF2H4 was involved in the phosphorylation of receptor coactivator 3(NCOA3)at serine 1330,which promoted the interaction between NCOA3 and p65,resulting in the transcriptional activation of NF-κB and the NF-kB/Snail signaling axis during partial *** vivo experiments confirmed that GTF2H4 significantly promoted partial EndMT and angiogenesis after ischemic ***,our findings reveal that targeting GTF2H4 is promising for tissue repair and offers potential opportunities for treating hypoxic/ischemic diseases.

关键词： ischemic activation GTF

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