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Enhancement of endogenous midbrain neurogenesis by microneurotrophin BNN-20 after neural progenitor grafting in a mouse model of nigral degeneration

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Neural Regeneration Research 2024年第6期19卷 1318-1324页

作者： Theodora Mourtzi Nasia Antoniou Christina Dimitriou Panagiotis Gkaravelas Georgia Athanasopoulou Panagiota Nti Kostantzo Olga Stathi Efthymia Theodorou Maria Anesti Rebecca Matsas Fevronia Angelatou Georgia Kouroupi Ilias Kazanis laboratory of Developmental biology Department of BiologyUniversity of PatrasPatrasGreece laboratory of cellular and molecular Neurobiology-stem cells Hellenic Pasteur InstituteAthensGreece Department of Physiology School of MedicineUniversity of PatrasPatrasGreece

We have previously shown the neuroprotective and pro-neurogenic activity of microneurotrophin BNN-20 in the substantia nigra of the“weaver”mouse,a model of progressive nigrostriatal ***,we extended our investigation in two clinically-relevant ***,we assessed the effects of BNN-20 on human induced pluripotent stem cell-derived neural progenitor cells and neurons derived from healthy and parkinsonian ***,we assessed if BNN-20 can boost the outcome of mouse neural progenitor cell intranigral transplantations in weaver mice,at late stages of *** found that BNN-20 has limited direct effects on cultured human induced pluripotent stem cell-derived neural progenitor cells,marginally enhancing their differentiation towards neurons and partially reversing the pathological phenotype of dopaminergic neurons generated from parkinsonian *** agreement,we found no effects of BNN-20 on the mouse neural progenitor cells grafted in the substantia nigra of weaver ***,the graft strongly induced an endogenous neurogenic response throughout the midbrain,which was significantly enhanced by the administration of microneurotrophin *** results provide straightforward evidence of the existence of an endogenous midbrain neurogenic system that can be specifically strengthened by ***,the lack of major similar activity on cultured human induced pluripotent stem cell-derived neural progenitors and their progeny reveals the in vivo specificity of the aforementioned pro-neurogenic effect.

关键词： adult neurogenesis BNN-20 brain-derived neurotrophic factor cell replacement induced pluripotent stem cells(iPSCs) neurotrophic factors Parkinson's disease substantia

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CD9 role in proliferation, rejuvenation, and therapeutic applications

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Genes & Diseases 2024年第3期11卷 95-97页

作者： Sai Priyanka Kodam Neda Baghban Mujib Ullah Institutefor Immunityand Transplantation Stem Cell Biology and Regenerative MedicineSchool of MedicineMolecular Medicine Department of MedicineStanford UniversityPaloAltoCA94304USA

The CD9 gene,also known as the Tspan29 gene,codes for a protein called CD9,which is a member of the tetraspanin family of transmembrane proteins.^(1) The CD9 protein is involved in various cellular processes,including cell proliferation,differentiation,adhesion,and migration.^(1,2) CD9 has also been found to play a role in the regulation of stem cell proliferation and differentiation.

关键词： migration. therapeutic CD9

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AtVQ25 promotes salicylic acid-related leaf senescence by fine-tuning the self-repression of AtWRKY53

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Journal of Integrative Plant biology 2024年第6期66卷 1126-1147页

作者： Qi Tan Mingming Zhao Jingwei Gao Ke Li Mengwei Zhang Yunjia Li Zeting Liu Yujia Song Xiaoyue Lu Zhengge Zhu Rongcheng Lin Pengcheng Yin Chunjiang Zhou Geng Wang Ministry of Education Key laboratory of molecular and cellular biology Hebei Research Center of the Basic Discipline of Cell BiologyHebei Collaboration Innovation Center for Cell Signaling and Environmental AdaptationHebei Key Laboratory of Molecular and Cellular BiologyCollege of Life SciencesHebei Normal UniversityShijiazhuang 050024China College of Chemical engineering Shijiazhuang UniversityShijiazhuang 050035China Institute of Botany Chinese Academy of SciencesBeijing 100093China

Most mechanistic details of chronologically ordered regulation of leaf senescence are *** networks centered on AtWRKY53 are crucial for orchestrating and integrating various senescence-related ***,AtWRKY53binds to its own promoter and represses transcription of AtWRKY53,but the biological significance and mechanism underlying this selfrepression remain *** this study,we identified the VQ motif-containing protein AtVQ25as a cooperator of *** expression level of AtVQ25 peaked at mature stage and was specifically repressed after the onset of leaf ***25-overexpressing plants and atvq25 mutants displayed precocious and delayed leaf senescence,***,we identified AtWRKY53 as an interacting partner of *** determined that interaction between AtVQ25 and AtWRKY53 prevented AtWRKY53from binding to W-box elements on the AtWRKY53promoter and thus counteracted the selfrepression of *** addition,our RNA-sequencing data revealed that the AtVQ25-AtWRKY53 module is related to the salicylic acid(SA)*** leaf senescence and SA-induced leaf senescence in AtVQ25-overexpressing lines were inhibited by an SA pathway mutant,atsid2,and Nah G transgenic plants;AtVQ25-overexpressing/atwrky53 plants were also insensitive to SA-induced leaf ***,we demonstrated that AtVQ25 directly attenuates the self-repression of AtWRKY53 during the onset of leaf senescence,which is substantially helpful for understanding the timing of leaf senescence onset modulated by AtWRKY53.

关键词： AtWRKY53 leaf senescence salicylic acid transcriptional regulation VQ motif-containing proteins

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Defining two subpopulations of marginal zone B cells

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cellular & molecular Immunology 2024年第4期21卷 412-413页

作者： Xiaojing Liu Fei-Long Meng Key laboratory of RNA Science and engineering Shanghai Institute of Biochemistry and Cell BiologyCenter for Excellence in Molecular Cell ScienceChinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghai200031China

Marginal zone(MZ)B cells,which are composed of heterogeneous subpopulations,are participate in the rapid response to *** et *** that MZ B cells can be divided into two distinct subpopulations based on CD80 *** two sub... 详细信息

关键词： expression. subpopulations al.

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OIP5 Interacts with NCK2 to Mediate Human Spermatogonial stem cell Self-Renewal and Apoptosis through cell Cyclins and Cycle Progression and Its Abnormality Is Correlated with Male Infertility

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Research 2024年第1期2023卷 455-469页

作者： Yinghong Cui Wei Chen Li Du Zuping He The Key laboratory of Model Animals and stem cell biology in Hunan Province The Research Center of Reproduction and Translational Medicine of Hunan ProvinceHunan Normal University School of MedicineChangsha 410013HunanChina

Spermatogonial stem cells(SSCs)have important applications in both reproduction and regenerative ***,specific genes and signaling transduction pathways in mediating fate decisions of human SSCs remain ***,we have demonstrated for the first time that OIP5(Opa interacting protein 5)controlled the self-renewal and apoptosis of human *** sequencing identified that NCK2 was a target for OIP5 in human SSCs,and interestingly,OIP5 could interact with NCK2 as shown by Co-IP(co-immunoprecipitation),IP-MS(mass spectrometry),and GST pulldown ***2 silencing decreased human SSC proliferation and DNA synthesis but enhanced their ***,NCK2 knockdown reversed the influence of OIP5 overexpression on human ***,OIP5 inhibition decreased the numbers of human SSCs at S and G2/M phases,while the levels of numerous cell cycle proteins,including cyclins A2,B1,D1,E1 and H,especially cyclin D1,were remarkably ***,whole-exome sequencing of 777 patients with nonobstructive azoospermia(NOA)revealed 54 singlenucleotide polymorphism mutations of the OIP5 gene(6.95%),while the level of OIP5 protein was obviously lower in testes of NOA patients compared to fertile ***,these results implicate that OIP5 interacts with NCK2 to modulate human SSC self-renewal and apoptosis via cell cyclins and cell cycle progression and that its mutation and/or lower expression is correlated with *** such,this study offers novel insights into molecular mechanisms underlying the fate determinations of human SSCs and the pathogenesis of NOA,and it provides new targets for treating male infertility.

关键词： OIP5 Apoptosis reversed

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Deer antler stem cell niche: An interesting perspective

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World Journal of stem cells 2024年第5期16卷 479-485页

作者： Claudia Cavallini Elena Olivi Riccardo Tassinari Chiara Zannini Gregorio Ragazzini Martina Marcuzzi Valentina Taglioli Carlo Ventura National laboratory of molecular biology and stem cell engineering National Institute of Biostructures and Biosystems-Eldor LabBologna 40128Italy Eldor Lab Bologna 40128Italy Department of Medical and Surgical Sciences(DIMEC) University of BolognaBologna 40138Italy

In recent years,there has been considerable exploration into methods aimed at enhancing the regenerative capacity of transplanted and/or tissue-resident ***,in particular,have garnered significant interest for their potential to serve as natural scaffolds for *** this editorial,we provide commentary on the study by Wang et al,in a recently published issue of World J stem cells,which investigates the use of a decellularized xenogeneic extracellular matrix(ECM)derived from antler stem cells for repairing osteochondral defects in rat knee *** focus lies specifically on the crucial role of biological scaffolds as a strategy for augmenting stem cell potential and regenerative capabilities,thanks to the establishment of a favorable microenvironment(niche).stem cell differen-tiation heavily depends on exposure to intrinsic properties of the ECM,including its chemical and protein composition,as well as the mechanical forces it can ***,these physicochemical cues contribute to a bio-instructive signaling environment that offers tissue-specific guidance for achieving effective repair and *** interest in mechanobiology,often conceptualized as a form of“structural memory”,is steadily gaining more validation and momen-tum,especially in light of findings such as these.

关键词： Extracellular matrix Antler stem cells stem cell niche Regenerative medicine Decellularized scaffolds cell memory

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Coiled-coil domain-containing 38 is required for acrosome biogenesis and fibrous sheath assembly in mice

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Journal of Genetics and Genomics 2024年第4期51卷 407-418页

作者： Yaling Wang Xueying Huang Guoying Sun Jingwen Chen Bangguo Wu Jiahui Luo Shuyan Tang Peng Dai Feng Zhang Jinsong Li Lingbo Wang Shanghai Key laboratory of Metabolic Remodeling and Health Institute of Metabolism and Integrative BiologyFudan UniversityShanghai 200438China Institute of Reproduction and Development Obstetrics and Gynecology HospitalFudan UniversityShanghai 200011China Shanghai Key laboratory of Maternal and Fetal Medicine Clinical and Translational Research Center of Shanghai First Maternity and Infant HospitalFrontier Science Center for Stem Cell ResearchSchool of Life Sciences and TechnologyTongji UniversityShanghai 200092China State Key laboratory of cell biology CAS Center for Excellence in Molecular Cell ScienceShanghai Institute of Biochemistry and Cell BiologyChinese Academy of SciencesShanghai 200031China

During spermiogenesis,haploid spermatids undergo dramatic morphological changes to form slender sperm flagella and cap-like acrosomes,which are required for successful *** deformities in flagella cause a male infertility syndrome,multiple morphological abnormalities of the flagella(MMAF),while acrosomal hypoplasia in some cases leads to sub-optimal embryonic developmental ***,evidence regarding the occurrence of acrosomal hypoplasia in MMAF is ***,we report the generation of base-edited mice knocked out for coiled-coil domain-containing 38(Ccdc38)via inducing a nonsense mutation and find that the males are *** Ccdc38-KO sperm display acrosomal hypoplasia and typical MMAF *** find that the acrosomal membrane is loosely anchored to the nucleus and fibrous sheaths are disorganized in Ccdc38-KO *** analyses reveal that Ccdc38 knockout causes a decreased level of TEKT3,a protein associated with acrosome biogenesis,in testes and an aberrant distribution of TEKT3 in *** finally show that intracytoplasmic sperm injection overcomes Ccdc38-related *** study thus reveals a previously unknown role for CCDC38 in acrosome biogenesis and provides additional evidence for the occurrence of acrosomal hypoplasia in MMAF.

关键词： Acrosomal hypoplasia Multiple morphological abnormalities of the flagella(MMAF) Infertility Sperm motility Asthenoteratozoospermia Disease modeling

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Pandemic punch:SARS-CoV-2 hits pancreas

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Signal Transduction and Targeted Therapy 2024年第5期9卷 1779-1780页

作者： Ninel Azoitei Sandra Heller Alexander Kleger Institute of molecular Oncology and stem cell biology Ulm UniversityUlmGermany Division of Interdisciplinary Pancreatology Clinic of Internal Medicine IUniversity Hospital UlmUlmGermany

The COVID-19 pandemic has profoundly impacted global health systems,revealing the extensive repercussions of SARS-CoV-2 beyond respiratory ***,traditionally considered a respiratory virus,SARS-CoV-2’s showcased the ability to target multiple organ systems including pancreas,an organ crucial for regulating blood sugar levels and aiding digestion.

关键词： pancreas respiratory traditionally

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Gene-knockout by iSTOP enables rapid reproductive disease modeling and phenotyping in germ cells of the founder generation

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Science China(Life Sciences) 2024年第5期67卷 1035-1050页

作者： Yaling Wang Jingwen Chen Xueying Huang Bangguo Wu Peng Dai Feng Zhang Jinsong Li Lingbo Wang State Key laboratory of Genetic engineering Shanghai Key Laboratory of Metabolic Remodeling and HealthInstitute of Metabolism and Integrative BiologyFudan UniversityShanghai 200438China Institute of Reproduction and Development Obstetrics and Gynecology HospitalFudan UniversityShanghai 200011China NHC Key Lab of Reproduction Regulation(Shanghai Institute for Biomedical and Pharmaceutical Technologies) School of PharmacyFudan UniversityShanghai 200433China Shanghai Key laboratoryof Maternal and Fetal Medicine Clinical and Translational Research Center of Shanghai First Maternity and Infant HospitalFrontier Science Center for Stem Cell ResearchSchoolof Life Sciences and TechnologyTongji UniversityShanghai 200092China State Key laboratory of cell biology CAS Center for Excellence in Molecular Cell ScienceShanghai Institute of Biochemistry and Cell BiologyChinese Academy of SciencesShanghai 200031China

Cytosine base editing achieves C·G-to-T·A substitutions and can convert four codons(CAA/CAG/CGA/TGG)into STOP-codons(induction of STOP-codons,iSTOP)to knock out genes with reduced *** enables direct phenotyping in founders’somatic cells,but it remains unknown whether this works in founders’germ cells so as to rapidly reveal novel genes for ***,we initially establish that iSTOP in mouse zygotes enables functional characterization of known genes in founders’germ cells:Cfap43-iSTOP male founders manifest expected sperm features resembling human“multiple morphological abnormalities of the flagella”syndrome(i.e.,MMAF-like features),while oocytes of Zp3-iSTOP female founders have no zona *** further illustrate iSTOP’s utility for dissecting the functions of unknown genes with Ccdc183,observing MMAF-like features and male infertility in Ccdc183-iSTOP founders,phenotypes concordant with those of Ccdc183-KO *** ultimately establish that CCDC183 is essential for sperm morphogenesis through regulating the assembly of outer dynein arms and participating in the intra-flagellar *** study demonstrates iSTOP as an efficient tool for direct reproductive disease modeling and phenotyping in germ cells of the founder generation,and rapidly reveals the essentiality of Ccdc183 in fertility,thus providing a time-saving approach for validating genetic defects(like nonsense mutations)for human infertility.

关键词： disease modeling infertility multiple morphological abnormalities of the flagella(MMAF) induction of STOP-codons(iSTOP CRISPR-STOP) sperm motility

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Metallothionein 1E Alleviates Cadmium-induced Renal Cytotoxicity through Promoting Mitochondrial Functional Recovery

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Biomedical and Environmental Sciences 2024年第1期37卷 117-121页

作者： WEN Si Hui LI Lu Bei HUANG Hui Dan XIE Ying LUO Lei Key laboratory of molecular Epidemiology of Hunan Province School of MedicineHunan Normal UniversityChangsha 410081HunanChina Department of Occupational Health Changsha Centre for Disease Control and PreventionChangsha 410004HunanChina The Key laboratory of Model Animals and stem cell biology in Hunan Province Hunan Normal University School of MedicineChangsha 410013HunanChina

The pervasive utilization of industrial substances has escalated human exposure to cadmium(Cd),a metal associated with long-term negative health outcomes such as renal dysfunction,neurological disorders,and various cancers^([1]).Once ingested by humans,Cd interacts with cysteine-rich metallothioneins(MTs)which have metal-binding and antioxidant properties and is subsequently transported to the kidney^([2]).

关键词： Renal kidney cadmium

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