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Pathological and physiological functional cross-talks ofα-synuclein and tau in the central nervous system

Neural Regeneration Research 2024年第4期19卷 855-862页

作者： Mingyue Jin Shengming Wang Xiaodie Gao Zhenyou Zou Shinji Hirotsune Liyuan Sun Guangxi Key Laboratory of Brain and Cognitive Neuroscience Guilin Medical University department of genetic Disease Research Osaka Metropolitan University Graduate School of Medicine department of Scientific Research Brain Hospital of Guangxi Zhuang Autonomous Region

α-Synuclein and tau are abundant multifunctional brain proteins that are mainly expressed in the presynaptic and axonal compartments of neurons,*** works have revealed that intracellular deposition ofα-synuclein and/or tau causes many neurodegenerative disorders,including Alzheimer’s disease and Parkinson’s *** intense investigation,the normal physiological functions and roles ofα-synuclein and tau are still unclear,owing to the fact that mice with knockout of either of these proteins do not present apparent ***,the co-occurrence ofα-synuclein and tau aggregates was found in post-mortem brains with synucleinopathies and tauopathies,some of which share similarities in clinical ***,the direct interaction ofα-synuclein with tau is considered to promote the fibrillization of each of the proteins in vitro and in *** the other hand,our recent findings have revealed thatα-synuclein and tau are cooperatively involved in brain development in a stage-dependent *** findings indicate strong cross-talk between the two proteins in physiology and *** this review,we provide a summary of the recent findings on the functional roles ofα-synuclein and tau in the physiological conditions and pathogenesis of neurodegenerative diseases.A deep understanding of the interplay betweenα-synuclein and tau in physiological and pathological conditions might provide novel targets for clinical diagnosis and therapeutic strategies to treat neurodegenerative diseases.

关键词： alpha-synuclein microtubule-associated protein neurodegenerative disease tau

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The pathogenic mechanism of syndactyly type V identified in aHoxd13Q50R knock-in mice

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Bone Research 2024年第2期12卷 349-360页

作者： Han Wang Xiumin Chen Xiaolu Meng Yixuan Cao Shirui Han Keqiang Liu Ximeng Zhao Xiuli Zhao Xue Zhang McKusick-Zhang Center for genetic Medicine State Key Laboratory of Complex Severe and Rare DiseasesDepartment of Medical GeneticsInstitute of Basic Medical Sciences Chinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijing 100005China department of Orthopedics State Key Laboratory of Complex Severe and Rare DiseasesPeking Union Medical College HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100730China

Syndactyly type V (SDTY5) is an autosomal dominant extremity malformation characterized by fusion of the fourth and fifthmetacarpals. In the previous publication, we first identified a heterozygous missense mutation Q50R in homeobox domain (HD) ofHOXD13 in a large Chinese family with SDTY5. In order to substantiate the pathogenicity of the variant and elucidate the underlyingpathogenic mechanism causing limb malformation, transcription-activator-like effector nucleases (TALEN) was employed togenerate a Hoxd13Q50R mutant mouse. The mutant mice exhibited obvious limb malformations including slight brachydactyly andpartial syndactyly between digits 2-4 in the heterozygotes, and severe syndactyly, brachydactyly and polydactyly in *** on BMP2 and SHH/GREM1/AER-FGF epithelial mesenchymal (e-m) feedback, a crucial signal pathway for limbdevelopment, we found the ectopically expressed Shh, Grem1 and Fgf8 and down-regulated Bmp2 in the embryonic limb bud atE10.5 to E12.5. A transcriptome sequencing analysis was conducted on limb buds (LBs) at E11.5, revealing 31 genes that exhibitednotable disparities in mRNA level between the Hoxd13Q50R homozygotes and the wild-type. These genes are known to be involvedin various processes such as limb development, cell proliferation, migration, and apoptosis. Our findings indicate that the ectopicexpression of Shh and Fgf8, in conjunction with the down-regulation of Bmp2, results in a failure of patterning along both theanterior-posterior and proximal-distal axes, as well as a decrease in interdigital programmed cell death (PCD). This cascadeultimately leads to the development of syndactyly and brachydactyly in heterozygous mice, and severe limb malformations inhomozygous mice. These findings suggest that abnormal expression of SHH, FGF8, and BMP2 induced by HOXD13Q50R may beresponsible for the manifestation of human SDTY5.

关键词： BMP2 mechanism finding

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Long non-coding RNA H19 regulates neurogenesis of induced neural stem cells in a mouse model of closed head injury

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Neural Regeneration Research 2024年第4期19卷 872-880页

作者： Mou Gao Qin Dong Zhijun Yang Dan Zou Yajuan Han Zhanfeng Chen Ruxiang Xu department of Neurosurgery Sichuan Academy of Medical Sciences and Sichuan Provincial People's HospitalSchool of MedicineUniversity of Electronic Science and Technology of China department of Neurosurgery Chinese PLA General Hospital Zhongsai Stem Cell genetic Engineering Co. Ltd. department of Neurology Fu Xing HospitalCapital Medical University

Stem cell-based therapies have been proposed as a potential treatment for neural regeneration following closed head *** previously reported that induced neural stem cells exert beneficial effects on neural regeneration via cell ***,the neural regeneration efficiency of induced neural stem cells remains *** this study,we explored differentially expressed genes and long non-coding RNAs to clarify the mechanism underlying the neurogenesis of induced neural stem *** found that H19 was the most downregulated neurogenesis-associated lnc RNA in induced neural stem cells compared with induced pluripotent stem ***,we demonstrated that H19 levels in induced neural stem cells were markedly lower than those in induced pluripotent stem cells and were substantially higher than those in induced neural stem cell-derived *** predicted the target genes of H19 and discovered that H19 directly interacts with mi R-325-3p,which directly interacts with Ctbp2 in induced pluripotent stem cells and induced neural stem *** H19 or Ctbp2 impaired induced neural stem cell proliferation,and mi R-325-3p suppression restored the effect of H19 inhibition but not the effect of Ctbp2 ***,H19 silencing substantially promoted the neural differentiation of induced neural stem cells and did not induce apoptosis of induced neural stem ***,silencing H19 in induced neural stem cell grafts markedly accelerated the neurological recovery of closed head injury *** results reveal that H19 regulates the neurogenesis of induced neural stem cells.H19 inhibition may promote the neural differentiation of induced neural stem cells,which is closely associated with neurological recovery following closed head injury.

关键词： closed head injury Ctbp2 induced neural stem cell lncRNA H19 miR-325-3p neurogenesis

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Maternal Preconception Serum Alanine Aminotransferase Levels and Risk of Preterm Birth among Reproductive-Aged Women—China,2013-2017

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China CDC weekly 2024年第10期6卷 181-188,I0001页

作者： Chuanyu Zhao Jiajing Jia Hanbin Wu Qin Xu Xinyi Lyu Meiya Liu Xuan Hu Jueming Lei Yuzhi Deng Yuan He Yuanyuan Wang Zuoqi Peng Ya Zhang Hongguang Zhang Qiaomei Wang Haiping Shen Yiping Zhang Donghai Yan Ying Yang Xu Ma National Research Institute for Family Planning BeijingChina National Human genetic Resources Center BeijingChina Graduate School of Peking Union medical College BeijingChina department of Epidemiology Fuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina

Summary What is already known about this topic?The significance of maternal liver health concerning preterm birth(PTB)is well recognized;however,there is a gap in understanding the precise influence of preconception s... 详细信息

关键词： Serum precise concerning

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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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Tumor angiogenesis and anti-angiogenic therapy

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中华医学杂志(英文版) 2024年第17期137卷 2043-2051页

作者： Guo Ziheng Jing Xu Sun Xiaoting Sun Shishuo Yang Yunlong Cao Yihai department of Pancreatic Surgery West China Hospital Sichuan University Chengdu Sichuan China department of Microbiology Tumor and Cell Biology Karolinska Institute Stockholm Sweden Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine Vison and Brain Health) School of Pharmaceutical Science Wenzhou Medical University Wenzhou Zhejiang China Cancer Institute the First Clinical Medical College Xuzhou Medical University Xuzhou Jiangsu China department of Cellular and genetic Medicine School of Basic Medical Sciences Fudan University Shanghai China

Anti-angiogenic drugs (AADs), which mainly target the vascular endothelial growth factor-A signaling pathway, have become a therapeutic option for cancer patients for two decades. During this period, tremendous clinical experience of anti-angiogenic therapy has been acquired, new AADs have been developed, and the clinical indications for AAD treatment of various cancers have been expanded using monotherapy and combination therapy. However, improvements in the therapeutic outcomes of clinically available AADs and the development of more effective next-generation AADs are still urgently required. This review aims to provide historical and perspective views on tumor angiogenesis to allow readers to gain mechanistic insights and learn new therapeutic development. We revisit the history of concept initiation and AAD discovery, and summarize the up-to-date clinical translation of anti-angiogenic cancer therapy in this field.

关键词： Angiogenesis Cancer Angiogenesis inhibitors Angiogenic factors Vascular endothelial growth factors Cancer therapy Combined modality therapy

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Role of cancer stem cell ecosystem on breast cancer metastasis and related mouse models

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Zoological Research 2024年第3期45卷 506-517页

作者： Xilei Peng Haonan Dong Lixing Zhang Suling Liu Fudan University Shanghai Cancer Center&Institutes of Biomedical Sciences/State Key Laboratory of genetic Engineering/Cancer Institutes/department of Oncology/Key Laboratory of Breast Cancer in Shanghai/Shanghai Key Laboratory of medical Epigenetics/Shanghai Key Laboratory of Radiation Oncology/International Co-laboratory of medical Epigenetics and Metabolism Ministry of Science and Technology/Shanghai Medical College/Fudan UniversityShanghai 200032China

Breast cancer metastasis is responsible for most breast cancer-related deaths and is influenced by many factors within the tumor ecosystem,including tumor cells and *** cancer stem cells(BCSCs)constitute a small population of cancer cells with unique characteristics,including their capacity for self-renewal and *** have shown that BCSCs not only drive tumorigenesis but also play a crucial role in promoting metastasis in breast *** tumor microenvironment(TME),composed of stromal cells,immune cells,blood vessel cells,fibroblasts,and microbes in proximity to cancer cells,is increasingly recognized for its crosstalk with BCSCs and role in BCSC survival,growth,and dissemination,thereby influencing metastatic ***,a thorough understanding of BCSCs and the TME is critical for unraveling the mechanisms underlying breast cancer *** this review,we summarize current knowledge on the roles of BCSCs and the TME in breast cancer metastasis,as well as the underlying regulatory ***,we provide an overview of relevant mouse models used to study breast cancer metastasis,as well as treatment strategies and clinical trials addressing BCSC-TME interactions during ***,this study provides valuable insights for the development of effective therapeutic strategies to reduce breast cancer metastasis.

关键词： Breast cancer Metastasis Cancer stem cell Ecosystem Tumor microenvironment Mouse model

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Modeling human gastric cancers in immunocompetent mice

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Cancer Biology & Medicine 2024年第7期21卷 553-570页

作者： Weihong Zhang Shilong Wang Hui Zhang Yan Meng Shi Jiao Liwei An Zhaocai Zhou department of Stomatology Department of Medical UltrasoundShanghai Tenth People's HospitalTongji University Cancer CenterTongji University School of MedicineShanghai 200072China State Key Laboratory of genetic Engineering School of Life SciencesZhongshan HospitalFudan UniversityShanghai 200032China Collaborative Innovation Center for Cancer Personalized Medicine School of Public HealthNanjing Medical UniversityNanjing 211166China

Gastric cancer(GC)is a major cause of cancer-related mortality *** is determined by multiple(epi)genetic and environmental factors;can occur at distinct anatomic positions of the stomach;and displays high heterogeneity,with different cellular origins and diverse histological and molecular *** heterogeneity has hindered efforts to fully understand the pathology of GC and develop efficient *** the past decade,great progress has been made in the study of GC,particularly in molecular subtyping,investigation of the immune microenvironment,and defining the evolutionary path and *** mouse models,particularly immunocompetent models that mimic the cellular and molecular features of human GC,in combination with organoid culture and clinical studies,have provided powerful tools for elucidating the molecular and cellular mechanisms underlying GC pathology and immune evasion,and the development of novel therapeutic ***,we first briefly introduce current progress and challenges in GC study and subsequently summarize immunocompetent GC mouse models,emphasizing the potential application of genetically engineered mouse models in antitumor immunity and immunotherapy studies.

关键词： Gastric cancer heterogeneity mouse model GEMM immunocompetent

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Potential Adverse Outcome Pathways of Chlorinated Organophosphate Flame Retardants

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China CDC weekly 2024年第23期6卷 542-546,I0008-I0011页

作者： Meiyu Zhou Huilin Zhang Qi Xiao Kexin Li Xiaoting Li Haiyan Chu department of Environmental Genomics Jiangsu Key Laboratory of Cancer BiomarkersPrevention and TreatmentCollaborative Innovation Center for Cancer Personalized MedicineSchool of Public HealthNanjing Medical UniversityNanjing CityJiangsu ProvinceChina department of genetic Toxicology The Key Laboratory of Modern Toxicology of Ministry of EducationCenter of Global HealthSchool of Public HealthNanjing Medical UniversityNanjing CityJiangsu ProvinceChina department of Nutrition and Food Safety School of Public HealthNanjing Medical UniversityNanjing CityJiangsu ProvinceChina

What is already known about this topic?Chlorinated organophosphate flame retardants(Cl-OPFRs)are frequently detected chemicals in the environment and biological samples,yet there is a lack of systematic evaluation regarding the adverse effects and toxicological mechanisms of *** is added by this report?This study utilizes the adverse outcome pathway(AOP)framework to assess the health implications and mechanisms of Cl-OPFRs,identifying multi-system toxicity,with a particular emphasis on reproductive issues and the possible toxic *** are the implications for public health practice?These results enhance knowledge of the health hazards linked to Cl-OPFRs,supporting the creation of focused risk evaluations and suitable regulatory actions.

关键词： utilize supporting Chlorin

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RNF187 governs the maintenance of mouse GC-2 cell development by facilitating histone H3 ubiquitination at K57/80

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Asian Journal of Andrology 2024年第3期26卷 272-281页

作者： Bing-Ya Xu Xiang-Ling Yu Wen-Xin Gao Ting-Ting Gao Hao-Yue Hu Tian-Tian Wu Cong Shen Xiao-Yan Huang Bo Zheng Yi-Bo Wu Human Reproductive and genetic Center Affiliated Hospital of Jiangnan UniversityWuxi 214122China State Key Laboratory of Reproductive Medicine Department of Histology and EmbryologySchool of Basic Medical SciencesNanjing Medical UniversityNanjing 211166China Changzhou Maternal and Child Health Care Hospital Changzhou Medical CenterNanjing Medical UniversityChangzhou 213000China State Key Laboratory of Reproductive Medicine Center for Reproduction and GeneticsSuzhou Municipal HospitalThe Affiliated Suzhou Hospital of Nanjing Medical UniversityGusu SchoolNanjing Medical UniversitySuzhou 215002China

RING finger 187(RNF187),a ubiquitin-ligating(E3)enzyme,plays a crucial role in the proliferation of cancer ***,it remains unclear whether RNF187 exhibits comparable functionality in the development of germline *** investigate thepotential involvement of RNF187 in germ cell development,we conducted interference and overexpression assays using GC-2 cells,a mouse spermatocyte-derived cell *** findings reveal that the interaction between RNF187 and histone H3 increases theviability,proliferation,and migratory capacity of GC-2 ***,we provide evidence demonstrating that RNF187 interactswith H3 and mediates the ubiquitination of H3 at lysine 57(K57)or lysine 80(K80),directly or indirectly resulting in increasedcellular *** is a study to report the role of RNF187 in maintaining the development of GC-2 cells by mediatinghistone H3 ubiquitination,thus highlighting the involvement of the K57 and K80 residues of H3 in the epistatic regulation of *** discoveries provide a new theoretical foundation for further comprehensive investigations into the functionof RNF187 in the reproductive system.

关键词： GC-2 cell histone H3 RNF187 ubiquitination

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