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Dynamic transcriptional programs define distinct mammalian cortical lineages

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Neural regeneration Research 2024年第2期19卷 387-389页

作者： Tanzila Mukhtar Verdon Taylor Department of Biomedicine University of BaselBaselSwitzerland Eli and Edythe Broad Center of regeneration Medicine and stem cell Research University of CaliforniaSan FranciscoCAUSA

The cerebral cortex is composed of billions of neurons and glia that are generated sequentially during *** cells are generated in an organized fashion during *** early stages of brain development,neural stem cells(NSC... 详细信息

关键词： cortex cerebral development

Comparative analysis of primate and pig cells reveals primate-specific PINK1 expression and phosphorylation

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Zoological Research 2024年第2期45卷 242-252页

作者： Xiu-Sheng Chen Rui Han Yan-Ting Liu Wei Huang Qi Wang Xin Xiong Ying Zhang Jian-Guo Zhao Shi-Hua Li Xiao-Jiang Li Wei-Li Yang Guangdong Key Laboratory of Non-human Primate Research Key Laboratory of CNS Regeneration(Ministry of Education)GHM Institute of CNS RegenerationJinan UniversityGuangzhouGuangdong 510632China State Key Laboratory of stem cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China Beijing Institute for stem cell and Regenerative Medicine Beijing 100101China University of Chinese Academy of Sciences Beijing 100049China

PTEN-induced putative kinase 1(PINK1),a mitochondrial kinase that phosphorylates Parkin and other proteins,plays a crucial role in mitophagy and protection against *** in PINK1 and Parkin can lead to loss of function and early onset Parkinson's ***,there is a lack of strong in vivo evidence in rodent models to support the theory that loss of PINK1 affects mitophagy and induces ***,PINK1 knockout pigs(Sus scrofa)do not appear to exhibit *** our recent work involving non-human primates,we found that PINK1 is selectively expressed in primate brains,while absent in rodent *** extend this to other species,we used multiple antibodies to examine the expression of PINK1 in pig *** contrast to tissues from cynomolgus monkeys(Macaca fascicularis),our data did not convincingly demonstrate detectable PINK1expression in pig *** of PINK1 in cultured pig cells did not result in altered Parkin and BAD phosphorylation,as observed in cultured monkey cells.A comparison of monkey and pig striatum revealed more PINK1-phosphorylated substrates in the monkey ***,PINK1 knockout in pigs did not lead to obvious changes in the phosphorylation of Parkin and *** findings provide new evidence that PINK1expression is specific to primates,underscoring the importance of non-human primates in investigating PINK1function and pathology related to PINK1 deficiency.

关键词： PINK1 Parkin Mitochondria Phosphorylation Non-human primates Pigs

The evolving views of hematopoiesis:from embryo to adulthood and from in vivo to in vitro

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Journal of Genetics and Genomics 2024年第1期51卷 3-15页

作者： Yifan Zhang Feng Liu Shandong Provincial Key Laboratory of Animal cell and Developmental Biology School of Life SciencesShandong UniversityQingdaoShandong 266237China State Key Laboratory of Membrane Biology Institute of ZoologyInstitute for Stem Cell and RegenerationUniversity of Chinese Academy of SciencesChinese Academy of SciencesBeijing 100101China

The hematopoietic system composed of hematopoietic stem and progenitor cells(HSPCs)and their differentiated lineages serves as an ideal model to uncover generic principles of cell fate *** gastrulation onwards,there successively emerge primitive hematopoiesis(that produces specialized he-matopoietic cells),pro-definitive hematopoiesis(that produces lineage-restricted progenitor cells),and definitive hematopoiesis(that produces multipotent HSPCs).These nascent lineages develop in several transient hematopoietic sites and finally colonize into lifelong hematopoietic *** development and maintenance of hematopoietic lineages are orchestrated by cell-intrinsic gene regulatory networks and cell-extrinsic microenvironmental *** to the progressive methodology(e.g.,high-throughput lineage tracing and single-cell functional and omics analyses),our understanding of the developmental origin of hematopoietic lineages and functional properties of certain hematopoietic organs has been updated;meanwhile,new paradigms to characterize rare cell types,cell heterogeneity and its causes,and comprehensive regulatory landscapes have been ***,we review the evolving views of HSPC biology during developmental and postnatal ***,we discuss recent advances in the in vitro induction and expansion of HSPCs,with a focus on the implications for clinical applications.

关键词： Hematopoietic stem and progenitor cell Developmental hematopoiesis Postnatal hematopoiesis In vitro hematopoiesis

Genome-edited rabbits:Unleashing the potential of a promising experimental animal model across diverse diseases

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Zoological Research 2024年第2期45卷 253-262页

作者： Yang Han Jiale Zhou Renquan Zhang Yuru Liang Liangxue Lai Zhanjun Li Key Laboratory of Zoonosis Research Ministry of EducationCollege of Animal ScienceJilin UniversityChangchunJilin 130062China CAS Key Laboratory of Regenerative Biology Guangdong Provincial Key Laboratory of Stem Cell and Regenerative MedicineSouth China Institute for Stem Cell Biology and Regenerative MedicineGuangzhou Institutes of Biomedicine and HealthChinese Academy of SciencesGuangzhouGuangdong 510530China Guangzhou Regenerative Medicine and Health Guang Dong Laboratory(GRMH-GDL) GuangzhouGuangdong 510005China Institute for stem cell and regeneration Chinese Academy of SciencesBeijing 100101China

Animal models are extensively used in all aspects of biomedical research,with substantial contributions to our understanding of diseases,the development of pharmaceuticals,and the exploration of gene *** field of genome modification in rabbits has progressed ***,recent advancements,particularly in CRISPR/Cas9-related technologies,have catalyzed the successful development of various genome-edited rabbit models to mimic diverse diseases,including cardiovascular disorders,immunodeficiencies,agingrelated ailments,neurological diseases,and ophthalmic *** models hold great promise in advancing biomedical research due to their closer physiological and biochemical resemblance to humans compared to *** review aims to summarize the novel gene-editing approaches currently available for rabbits and present the applications and prospects of such models in biomedicine,underscoring their impact and future potential in translational medicine.

关键词： Genome editing Animal model Rabbit CRISPR/Cas9 Genetic diseases

One-step cell biomanufacturing platform:porous gelatin microcarrier beads promote human embryonic stem cell-derived midbrain dopaminergic progenitor cell differentiation in vitro and survival after transplantation in vivo

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Neural regeneration Research 2024年第2期19卷 458-464页

作者： Lin Feng Da Li Yao Tian Chengshun Zhao Yun Sun Xiaolong Kou Jun Wu Liu Wang Qi Gu Wei Li Jie Hao Baoyang Hu Yukai Wang State Key Laboratory of stem cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijingChina Institute for stem cell and Regenerative Medicine Chinese Academy of SciencesBeijingChina National stem cell Resource Center Chinese Academy of SciencesBeijingChina Savaid Medical School University of Chinese Academy of SciencesBeijingChina Beijing Institute for stem cell and Regenerative Medicine BeijingChina State Key Laboratory of Membrane Biology Institute of ZoologyChinese Academy of SciencesBeijingChina

Numerous studies have shown that cell replacement therapy can replenish lost cells and rebuild neural circuitry in animal models of Parkinson’s *** of midbrain dopaminergic progenitor cells is a promising treatment for Parkinson’s ***,transplanted cells can be injured by mechanical damage during handling and by changes in the transplantation ***,we developed a one-step biomanufacturing platform that uses small-aperture gelatin microcarriers to produce beads carrying midbrain dopaminergic progenitor *** beads allow midbrain dopaminergic progenitor cell differentiation and cryopreservation without digestion,effectively maintaining axonal integrity in ***,midbrain dopaminergic progenitor cell bead grafts showed increased survival and only mild immunoreactivity in vivo compared with suspended midbrain dopaminergic progenitor cell ***,our findings show that these midbrain dopaminergic progenitor cell beads enhance the effectiveness of neuronal cell transplantation.

关键词： axonal integrity cell cryopreservation cellular environment cellular niche cell replacement therapy dopaminergic progenitors human pluripotent stem cell mechanical damage neuronal cell delivery Parkinson’s disease small-aperture gelatin microcarriers

Genetically modified pigs:Emerging animal models for hereditary hearing loss

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Zoological Research 2024年第2期45卷 284-291页

作者： Xiao Wang Tian-Xia Liu Ying Zhang Liang-Wei Xu Shuo-Long Yuan A-Long Cui Wei-Wei Guo Yan-Fang Wang Shi-Ming Yang Jian-Guo Zhao State Key Laboratory of stem cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China Savaid Medical School University of Chinese Academy of SciencesBeijing 100049China Institute for stem cell and regeneration Chinese Academy of SciencesBeijing 100101China Beijing Institute for stem cell and Regenerative Medicine Beijing 100101China Department of Otolaryngology-Head and Neck Surgery Institute of OtolaryngologyChinese PLA General HospitalBeijing 100853China Division of Life Sciences and Medicine University of Science and Technology of ChinaHefeiAnhui 230022China State Key Laboratory of Animal Biotech Breeding Institute of Animal ScienceChinese Academy of Agricultural SciencesBeijing100193China

Hereditary hearing loss(HHL),a genetic disorder that impairs auditory function,significantly affects quality of life and incurs substantial economic losses for *** investigate the underlying causes of HHL and evaluate therapeutic outcomes,appropriate animal models are *** have been extensively used as valuable large animal models in biomedical *** this review,we highlight the advantages of pig models in terms of ear anatomy,inner ear morphology,and electrophysiological characteristics,as well as recent advancements in the development of distinct genetically modified porcine models of hearing ***,we discuss the prospects,challenges,and recommendations regarding the use pig models in HHL ***,this review provides insights and perspectives for future studies on HHL using porcine models.

关键词： Pigs Animal models Hereditary hearing loss Genetic modification Inner ear

Epigenetic memory of drug exposure history controls neural stem cell quiescence in the adult brain

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Neural regeneration Research 2024年第4期19卷 711-712页

作者： Masakazu Iwamoto Taito Matsuda Department of stem cell Biology and Medicine Graduate School of Medical SciencesKyushu UniversityFukuokaJapan

Neural stem cells(NSCs)are the source of all neurons and glial cells(astrocytes and oligodendrocytes)in the central nervous *** adult mammalian brain retains NSCs in the subgranular zone of the dentate gyrus in the hippocampus and ventricular subventricular zone lining the lateral ventricle(Olpe and Jessberger,2022).Adult NSCs in rodents are preserved throughout life and continuously produce new neurons that integrate into the pre-existing neuronal network.

关键词： neural integrate continuously

Unresolved Excess Accumulation of Myelin-Derived Cholesterol Contributes to Scar Formation after Spinal Cord Injury

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Research 2024年第1期2023卷 17-32页

作者： Bolin Zheng Yijing He Shuai Yin Xu Zhu Qing Zhao Huiyi Yang Zhaojie wang Rongrong Zhu Liming Cheng Key Laboratory of Spine and Spinal Cord Injury Repair and regeneration Ministry of EducationDepartment of OrthopedicsTongji HospitalSchool of MedicineTongji UniversityShanghai 200092China Frontier Science Center for stem cell Research School of Life Science and TechnologyTongji UniversityShanghai 200092China Clinical Center for Brain and Spinal Cord Research Tongji UniversityShanghai 200092China

Spinal cord injury triggers complex pathological cascades,resulting in destructive tissue damage and incomplete tissue *** formation is generally considered a barrier for regeneration in the central nervous ***,the intrinsic mechanism of scar formation after spinal cord injury has not been fully ***,we report that excess cholesterol accumulates in phagocytes and is inefficiently removed from spinal cord lesions in young adult ***,we observed that excessive cholesterol also accumulates in injured peripheral nerves but is subsequently removed by reverse ***,preventing reverse cholesterol transport leads to macrophage accumulation and fibrosis in injured peripheral ***,the neonatal mouse spinal cord lesions are devoid of myelin-derived lipids and can heal without excess cholesterol *** found that transplantation of myelin into neonatal lesions disrupts healing with excessive cholesterol accumulation,persistent macrophage activation,and *** internalization suppresses macrophage apoptosis mediated by CD5L expression,indicating that myelin-derived cholesterol plays a critical role in impaired wound *** together,our data suggest that the central nervous system lacks an efficient approach for cholesterol clearance,resulting in excessive accumulation of myelin-derived cholesterol,thereby inducing scar formation after injury.

关键词： healing Spinal impaired

A dysregulated calcium homeostasis as the earliest pathological sign in stem cell-derived Parkinson's disease neurons?

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Neural regeneration Research 2024年第7期19卷 1421-1422页

作者： Nilima Prakash Working Group Human stem cell Research Department Hamm 2Hamm-Lippstadt University of Applied SciencesHammGermany

Parkinson’s disease(PD) is characterized by the slow and progressive demise of dopamine(DA)-synthesizing neurons in the substantia nigra pars compacta(SNc),a nucleus located in the human ventral *** death also affects other regions in the brain at later stages of *** concomitant lack of DA in the human forebrain(striatum) leads to the typical motor symptoms of this still uncurable neurodegenerative disorder.

关键词： homeostasis dopamine death