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Duan P, Li B, Zhou Y, Cao H, Chen S, Xing Y. ZBTB20 suppresses tumor growth in glioblastoma through activating the TET1/FAS/caspase‑3 pathway. Oncol Lett 2024; 28:358. [PMID: 38881713 PMCID: PMC11176889 DOI: 10.3892/ol.2024.14491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 04/16/2024] [Indexed: 06/18/2024] Open
Abstract
Zinc finger and BTB domain containing 20 (ZBTB20) is a key transcription repressor that regulates multiple physiological and pathophysiological processes. Thus far, the role of ZBTB20 in glioblastoma (GBM), a World Health Organization grade IV glioma, remains unclear. In the present study, the expression profile data of ZBTB20 in GBM tissues from public databases was analyzed. It was found that ZBTB20 expression in GBM tissues was significantly lower than that measured in lower grade glioma tissues. Furthermore, patients with GBM with lower ZBTB20 expression were associated with a shorter overall survival time. Gain- and loss-of-function experiments in GBM cells were also performed. The results demonstrated that ZBTB20 overexpression decreased GBM cell proliferation, while ZBTB20 knockdown significantly enhanced it. Cell cycle analysis showed the ZBTB20 overexpression may have inhibited proliferation through cell cycle arrest at the G2/M phase, while ZBTB20 knockdown increased the percentages of cells in both the S phase and G2/M phase. Ten-eleven translocation 1 (TET1) is an important tumor suppressor involved in the formation of various types of tumor, and it was upregulated in ZBTB20-overexpressing GBM cells. It was further demonstrated that ZBTB20 activated the TET1/FAS/caspase-3 pathway. The results of the present study therefore indicated the potential role of ZBTB20 as a tumor suppressor and therapeutic target for GBM.
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Affiliation(s)
- Ping Duan
- Department of Physiology and Neurobiology, College of Medicine, Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Bo Li
- Department of Physiology and Neurobiology, College of Medicine, Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Yifan Zhou
- Department of Physiology and Neurobiology, College of Medicine, Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Huanhuan Cao
- Department of Physiology and Neurobiology, College of Medicine, Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Shiyue Chen
- Department of Physiology and Neurobiology, College of Medicine, Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Ying Xing
- Department of Physiology and Neurobiology, College of Medicine, Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
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Bonchuk AN, Georgiev PG. C2H2 proteins: Evolutionary aspects of domain architecture and diversification. Bioessays 2024; 46:e2400052. [PMID: 38873893 DOI: 10.1002/bies.202400052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 05/24/2024] [Accepted: 05/27/2024] [Indexed: 06/15/2024]
Abstract
The largest group of transcription factors in higher eukaryotes are C2H2 proteins, which contain C2H2-type zinc finger domains that specifically bind to DNA. Few well-studied C2H2 proteins, however, demonstrate their key role in the control of gene expression and chromosome architecture. Here we review the features of the domain architecture of C2H2 proteins and the likely origin of C2H2 zinc fingers. A comprehensive investigation of proteomes for the presence of proteins with multiple clustered C2H2 domains has revealed a key difference between groups of organisms. Unlike plants, transcription factors in metazoans contain clusters of C2H2 domains typically separated by a linker with the TGEKP consensus sequence. The average size of C2H2 clusters varies substantially, even between genomes of higher metazoans, and with a tendency to increase in combination with SCAN, and especially KRAB domains, reflecting the increasing complexity of gene regulatory networks.
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Affiliation(s)
- Artem N Bonchuk
- Department of the Control of Genetic Processes, Institute of Gene Biology Russian Academy of Sciences, Moscow, Russia
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Institute of Gene Biology, Russian Academy of Sciences, Moscow, Russia
| | - Pavel G Georgiev
- Department of the Control of Genetic Processes, Institute of Gene Biology Russian Academy of Sciences, Moscow, Russia
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González Maciel A, Rosas López LE, Romero-Velázquez RM, Ramos-Morales A, Ponce-Macotela M, Calderón-Guzmán D, Trujillo-Jiménez F, Alfaro-Rodríguez A, Reynoso-Robles R. Postnatal zinc deficiency due to giardiasis disrupts hippocampal and cerebellar development. PLoS Negl Trop Dis 2024; 18:e0012302. [PMID: 38950061 PMCID: PMC11244800 DOI: 10.1371/journal.pntd.0012302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 07/12/2024] [Accepted: 06/20/2024] [Indexed: 07/03/2024] Open
Abstract
BACKGROUND Giardiasis and zinc deficiency have been identified as serious health problems worldwide. Although Zn depletion is known to occur in giardiasis, no work has investigated whether changes occur in brain structures. METHODS Three groups of gerbils were used: control (1), orogastrically inoculated on day 3 after birth with trophozoites of two isolates of Giardia intestinalis (HGINV/WB) group (2 and 3). Estimates were made at five ages covering: establishment of infection, Giardia population growth, natural parasite clearance and a post-infection age. QuantiChrome zinc assay kit, cresyl violet staining and TUNEL technique were used. RESULTS A significant decrease (p<0.01) in tissue zinc was observed and persisted after infection. Cytoarchitectural changes were observed in 75% of gerbils in the HGINV or WB groups. Ectopic pyramidal neurons were found in the cornus ammonis (CA1-CA3). At 60 and 90 days of age loss of lamination was clearly visible in CA1. In the dentate gyrus (DG), thinning of the dorsal lamina and abnormal thickening of the ventral lamina were observed from 30 days of age. In the cerebellum, we found an increase (p<0.01) in the thickness of the external granular layer (EGL) at 14 days of age that persisted until day 21 (C 3 ± 0.3 μm; HGINV 37 ± 5 μm; WB 28 ± 3 μm); Purkinje cell population estimation showed a significant decrease; a large number of apoptotic somas were observed scattered in the molecular layer; in 60 and 90 days old gerbils we found granular cell heterotopia and Purkinje cell ectopia. The pattern of apoptosis was different in the cerebellum and hippocampus of parasitized gerbils. CONCLUSION The morphological changes found suggest that neuronal migration is affected by zinc depletion caused by giardiasis in early postnatal life; for the first time, the link between giardiasis-zinc depletion and damaged brain structures is shown. This damage may explain the psychomotor/cognitive delay associated with giardiasis. These findings are alarming. Alterations in zinc metabolism and signalling are known to be involved in many brain disorders, including autism.
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Affiliation(s)
- Angélica González Maciel
- Laboratory of Cell and Tissue Morphology, Instituto Nacional de Pediatría, Secretaría de Salud, Mexico City, Mexico
| | - Laura Elizabeth Rosas López
- Laboratory of Cell and Tissue Morphology, Instituto Nacional de Pediatría, Secretaría de Salud, Mexico City, Mexico
| | - Rosa María Romero-Velázquez
- Laboratory of Cell and Tissue Morphology, Instituto Nacional de Pediatría, Secretaría de Salud, Mexico City, Mexico
| | - Andrea Ramos-Morales
- Laboratory of Cell and Tissue Morphology, Instituto Nacional de Pediatría, Secretaría de Salud, Mexico City, Mexico
| | - Martha Ponce-Macotela
- Laboratory of Experimental Parasitology, Instituto Nacional de Pediatría, Secretaría de Salud, Mexico City, Mexico
| | - David Calderón-Guzmán
- Laboratory of Neuroscience, Instituto Nacional de Pediatría, Secretaría de Salud, Mexico City, Mexico
| | | | - Alfonso Alfaro-Rodríguez
- Division of Neurosciences, Instituto Nacional de Rehabilitación, "Luis Guillermo Ibarra Ibarra", Secretaría de Salud, Mexico City, Mexico
| | - Rafael Reynoso-Robles
- Laboratory of Cell and Tissue Morphology, Instituto Nacional de Pediatría, Secretaría de Salud, Mexico City, Mexico
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Liu J, Zhang H. Zinc Finger and BTB Domain-Containing 20: A Newly Emerging Player in Pathogenesis and Development of Human Cancers. Biomolecules 2024; 14:192. [PMID: 38397429 PMCID: PMC10887282 DOI: 10.3390/biom14020192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 01/30/2024] [Accepted: 02/02/2024] [Indexed: 02/25/2024] Open
Abstract
Zinc finger and BTB domain-containing 20 (ZBTB20), which was initially identified in human dendritic cells, belongs to a family of transcription factors (TFs) with an N-terminal BTB domain and one or more C-terminal DNA-binding zinc finger domains. Under physiological conditions, ZBTB20 acts as a transcriptional repressor in cellular development and differentiation, metabolism, and innate immunity. Interestingly, multiple lines of evidence from mice and human systems have revealed the importance of ZBTB20 in the pathogenesis and development of cancers. ZBTB20 is not only a hotspot of genetic variation or fusion in many types of human cancers, but also a key TF or intermediator involving in the dysregulation of cancer cells. Given the diverse functions of ZBTB20 in both health and disease, we herein summarize the structure and physiological roles of ZBTB20, with an emphasis on the latest findings on tumorigenesis and cancer progression.
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Affiliation(s)
| | - Han Zhang
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China;
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Zhang B, Zhao C, Shen W, Li W, Zheng Y, Kong X, Wang J, Wu X, Zeng T, Liu Y, Zhou Y. KDM2B regulates hippocampal morphogenesis by transcriptionally silencing Wnt signaling in neural progenitors. Nat Commun 2023; 14:6489. [PMID: 37838801 PMCID: PMC10576813 DOI: 10.1038/s41467-023-42322-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 10/06/2023] [Indexed: 10/16/2023] Open
Abstract
The hippocampus plays major roles in learning and memory, and its formation requires precise coordination of patterning, cell proliferation, differentiation, and migration. Here we removed the chromatin-association capability of KDM2B in the progenitors of developing dorsal telencephalon (Kdm2b∆CxxC) to discover that Kdm2b∆CxxC hippocampus, particularly the dentate gyrus, became drastically smaller with disorganized cellular components and structure. Kdm2b∆CxxC mice display prominent defects in spatial memory, motor learning and fear conditioning, resembling patients with KDM2B mutations. The migration and differentiation of neural progenitor cells is greatly impeded in the developing Kdm2b∆CxxC hippocampus. Mechanism studies reveal that Wnt signaling genes in developing Kdm2b∆CxxC hippocampi are de-repressed due to reduced enrichment of repressive histone marks by polycomb repressive complexes. Activating the Wnt signaling disturbs hippocampal neurogenesis, recapitulating the effect of KDM2B loss. Together, we unveil a previously unappreciated gene repressive program mediated by KDM2B that controls progressive fate specifications and cell migration, hence morphogenesis of the hippocampus.
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Affiliation(s)
- Bo Zhang
- Department of Neurosurgery, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Chen Zhao
- Department of Neurosurgery, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Wenchen Shen
- Department of Neurosurgery, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Wei Li
- Department of Neurosurgery, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Yue Zheng
- Department of Neurosurgery, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Xiangfei Kong
- Department of Neurosurgery, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Junbao Wang
- Department of Neurosurgery, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Xudong Wu
- Department of Cell Biology, Tianjin Medical University, Tianjin, China
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Tao Zeng
- Department of Neurosurgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China.
| | - Ying Liu
- Department of Neurosurgery, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China.
| | - Yan Zhou
- Department of Neurosurgery, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China.
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Xie Z, Ma XH, Bai QF, Tang J, Sun JH, Jiang F, Guo W, Wang CM, Yang R, Wen YC, Wang FY, Chen YX, Zhang H, He DZ, Kelley MW, Yang S, Zhang WJ. ZBTB20 is essential for cochlear maturation and hearing in mice. Proc Natl Acad Sci U S A 2023; 120:e2220867120. [PMID: 37279265 PMCID: PMC10268240 DOI: 10.1073/pnas.2220867120] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Accepted: 04/25/2023] [Indexed: 06/08/2023] Open
Abstract
The mammalian cochlear epithelium undergoes substantial remodeling and maturation before the onset of hearing. However, very little is known about the transcriptional network governing cochlear late-stage maturation and particularly the differentiation of its lateral nonsensory region. Here, we establish ZBTB20 as an essential transcription factor required for cochlear terminal differentiation and maturation and hearing. ZBTB20 is abundantly expressed in the developing and mature cochlear nonsensory epithelial cells, with transient expression in immature hair cells and spiral ganglion neurons. Otocyst-specific deletion of Zbtb20 causes profound deafness with reduced endolymph potential in mice. The subtypes of cochlear epithelial cells are normally generated, but their postnatal development is arrested in the absence of ZBTB20, as manifested by an immature appearance of the organ of Corti, malformation of tectorial membrane (TM), a flattened spiral prominence (SP), and a lack of identifiable Boettcher cells. Furthermore, these defects are related with a failure in the terminal differentiation of the nonsensory epithelium covering the outer border Claudius cells, outer sulcus root cells, and SP epithelial cells. Transcriptome analysis shows that ZBTB20 regulates genes encoding for TM proteins in the greater epithelial ridge, and those preferentially expressed in root cells and SP epithelium. Our results point to ZBTB20 as an essential regulator for postnatal cochlear maturation and particularly for the terminal differentiation of cochlear lateral nonsensory domain.
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Affiliation(s)
- Zhifang Xie
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Institute of Early Life Health, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai200092, China
- Department of Pathophysiology, Naval Medical University, Shanghai200433, China
| | - Xian-Hua Ma
- Department of Pathophysiology, Naval Medical University, Shanghai200433, China
| | - Qiu-Fang Bai
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin300134, China
| | - Jie Tang
- Department of Physiology, Southern Medical University, Guangzhou, Guangdong510515, China
| | - Jian-He Sun
- Senior Department of Otolaryngology-Head and Neck Surgery, National Clinical Research Center for Otolaryngologic Diseases, the Sixth Medical Center of PLA General Hospital, Beijing100141, China
| | - Fei Jiang
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Institute of Early Life Health, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai200092, China
| | - Wei Guo
- Senior Department of Otolaryngology-Head and Neck Surgery, National Clinical Research Center for Otolaryngologic Diseases, the Sixth Medical Center of PLA General Hospital, Beijing100141, China
| | - Chen-Ma Wang
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin300134, China
| | - Rui Yang
- Department of Pathophysiology, Naval Medical University, Shanghai200433, China
| | - Yin-Chuan Wen
- Department of Physiology, Southern Medical University, Guangzhou, Guangdong510515, China
| | - Fang-Yuan Wang
- Senior Department of Otolaryngology-Head and Neck Surgery, National Clinical Research Center for Otolaryngologic Diseases, the Sixth Medical Center of PLA General Hospital, Beijing100141, China
| | - Yu-Xia Chen
- Department of Pathophysiology, Naval Medical University, Shanghai200433, China
| | - Hai Zhang
- Department of Pathophysiology, Naval Medical University, Shanghai200433, China
| | - David Z. He
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE68178
| | | | - Shiming Yang
- Senior Department of Otolaryngology-Head and Neck Surgery, National Clinical Research Center for Otolaryngologic Diseases, the Sixth Medical Center of PLA General Hospital, Beijing100141, China
| | - Weiping J. Zhang
- Department of Pathophysiology, Naval Medical University, Shanghai200433, China
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin300134, China
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7
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Single cell molecular alterations reveal target cells and pathways of conditioned fear memory. Brain Res 2023; 1807:148309. [PMID: 36870465 DOI: 10.1016/j.brainres.2023.148309] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 02/17/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023]
Abstract
OBJECTIVES Recent evidence indicates that hippocampus is important for conditioned fear memory (CFM). Though few studies consider the roles of various cell types' contribution to such a process, as well as the accompanying transcriptome changes during this process. The purpose of this study was to explore the transcriptional regulatory genes and the targeted cells that are altered by CFM reconsolidation. METHODS A fear conditioning experiment was established on adult male C57 mice, after day 3 tone-cued CFM reconsolidation test, hippocampus cells were dissociated. Using single cell RNA sequencing (scRNA-seq) technique, alterations of transcriptional genes expression were detected and cell cluster analysis were performed and compared with those in sham group. RESULTS Seven non-neuronal and eight neuronal cell clusters (including four known neurons and four newly identified neuronal subtypes) has been explored. Among them, CA subtype 1 has characteristic gene markers of Ttr and Ptgds, which is speculated to be the outcome of acute stress and promotes the production of CFM. The results of KEGG pathway enrichment indicate the differences in the expression of certain molecular protein functional subunits in long-term potentiation (LTP) pathway between two types of neurons (DG and CA1) and astrocytes, thus providing a new transcriptional perspective for the role of hippocampus in the CFM reconsolidation. More importantly, the correlation between the reconsolidation of CFM and neurodegenerative diseases-linked genes is substantiated by the results from cell-cell interactions and KEGG pathway enrichment. Further analysis shows that the reconsolidation of CFM inhibits the risk-factor genes App and ApoE in Alzheimer's Disease (AD) and activates the protective gene Lrp1. CONCLUSIONS This study reports the transcriptional genes expression changes of hippocampal cells driven by CFM, which confirm the involvement of LTP pathway and suggest the possibility of CFM-like behavior in preventing AD. However, the current research is limited to normal C57 mice, and further studies on AD model mice are needed to prove this preliminary conclusion.
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Ba R, Yang L, Zhang B, Jiang P, Ding Z, Zhou X, Yang Z, Zhao C. FOXG1 drives transcriptomic networks to specify principal neuron subtypes during the development of the medial pallium. SCIENCE ADVANCES 2023; 9:eade2441. [PMID: 36791184 PMCID: PMC9931217 DOI: 10.1126/sciadv.ade2441] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
The medial pallium (MP) is the major forebrain region underlying learning and memory, spatial navigation, and emotion; however, the mechanisms underlying the specification of its principal neuron subtypes remain largely unexplored. Here, by postmitotic deletion of FOXG1 (a transcription factor linked to autism spectrum disorders and FOXG1 syndrome) and single-cell RNA sequencing of E17.5 MP in mice, we found that FOXG1 controls the specification of upper-layer retrosplenial cortical pyramidal neurons [RSC-PyNs (UL)], subiculum PyNs (SubC-PyNs), CA1-PyNs, CA3-PyNs, and dentate gyrus granule cells (DG-GCs) in the MP. We uncovered subtype-specific and subtype-shared FOXG1-regulated transcriptomic networks orchestrating MP neuron specification. We further demonstrated that FOXG1 transcriptionally represses Zbtb20, Prox1, and Epha4 to prevent CA3-PyN and DG-GC identities during the specification of RSC-PyNs (UL) and SubC-PyNs; FOXG1 directly activates Nr4a2 to promote SubC-PyN identity. We showed that TBR1, controlled by FOXG1 during CA1-PyN specification, was down-regulated. Thus, our study illuminates MP principal neuron subtype specification and related neuropathogenesis.
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Affiliation(s)
- Ru Ba
- Key Laboratory of Developmental Genes and Human Diseases, Ministry of Education, School of Medicine, Southeast University, Nanjing 210009, China
| | - Lin Yang
- State Key Laboratory of Medical Neurobiology, Institutes of Brain Science, MOE Frontier Research Center for Brain Science, Fudan University, Shanghai 200032, P.R. China
| | - Baoshen Zhang
- Key Laboratory of Developmental Genes and Human Diseases, Ministry of Education, School of Medicine, Southeast University, Nanjing 210009, China
| | - Pengfei Jiang
- Key Laboratory of Developmental Genes and Human Diseases, Ministry of Education, School of Medicine, Southeast University, Nanjing 210009, China
| | - Zhipeng Ding
- Key Laboratory of Developmental Genes and Human Diseases, Ministry of Education, School of Medicine, Southeast University, Nanjing 210009, China
| | - Xue Zhou
- Key Laboratory of Developmental Genes and Human Diseases, Ministry of Education, School of Medicine, Southeast University, Nanjing 210009, China
| | - Zhengang Yang
- State Key Laboratory of Medical Neurobiology, Institutes of Brain Science, MOE Frontier Research Center for Brain Science, Fudan University, Shanghai 200032, P.R. China
| | - Chunjie Zhao
- Key Laboratory of Developmental Genes and Human Diseases, Ministry of Education, School of Medicine, Southeast University, Nanjing 210009, China
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MicroRNA Expression Profile in TSC Cell Lines and the Impact of mTOR Inhibitor. Int J Mol Sci 2022; 23:ijms232214493. [PMID: 36430972 PMCID: PMC9694073 DOI: 10.3390/ijms232214493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 11/10/2022] [Accepted: 11/16/2022] [Indexed: 11/23/2022] Open
Abstract
The aim of this study was to assess the potential implication of microRNA on tuberous sclerosis (TSC) pathogenesis by performing microRNA profiling on cell lines silencing TSC1 or TSC2 genes using qPCR panels, before and after incubation with rapamycin. Significant differences in expression were observed between samples before and after rapamycin treatment in nineteen miRNAs in TSC1, five miRNAs in TSC2 and seven miRNAs in controls. Of miRNAs dysregulated before rapamycin treatment, three normalized after treatment in the TSC1 group (miR-21-3p, miR-433-3p, let-7g-3p) and one normalized in the TSC2 group (miR-1224-3p). Of the miRNAs dysregulated before rapamycin treatment in the TSC1 and TSC2 groups, two did not normalize after treatment (miR-33a-3p, miR-29a-3p). The results of the possible targets indicated that there are four common genes with seed regions susceptible to regulation by those miRNAs: ZBTB20, PHACTR2, PLXNC1 and ATP1B4. Our data show no changes in mRNA expression of these targets after rapamycin treatment. In conclusion, results of our study indicate the involvement of miRNA dysregulation in the pathogenesis of TSC. Some of the miRNA might be used as markers of treatment efficacy and autonomic miRNA as a target for future therapy.
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Pan B, Han B, Zhu X, Wang Y, Ji H, Weng J, Liu Y. Dysfunctional microRNA-144-3p/ZBTB20/ERK/CREB1 signalling pathway is associated with MK-801-induced schizophrenia-like abnormalities. Brain Res 2022; 1798:148153. [DOI: 10.1016/j.brainres.2022.148153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/14/2022] [Accepted: 10/31/2022] [Indexed: 11/05/2022]
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Wang A, Wang J, Tian K, Huo D, Ye H, Li S, Zhao C, Zhang B, Zheng Y, Xu L, Hua X, Wang K, Wu QF, Wu X, Zeng T, Liu Y, Zhou Y. An epigenetic circuit controls neurogenic programs during neocortex development. Development 2021; 148:273471. [PMID: 35020876 DOI: 10.1242/dev.199772] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 10/08/2021] [Indexed: 12/11/2022]
Abstract
The production and expansion of intermediate progenitors (IPs) are essential for neocortical neurogenesis during development and over evolution. Here, we have characterized an epigenetic circuit that precisely controls neurogenic programs, particularly properties of IPs, during neocortical development. The circuit comprises a long non-coding RNA (LncBAR) and the BAF (SWI/SNF) chromatin-remodeling complex, which transcriptionally maintains the expression of Zbtb20. LncBAR knockout neocortex contains more deep-layer but fewer upper-layer projection neurons. Intriguingly, loss of LncBAR promotes IP production, but paradoxically prolongs the duration of the cell cycle of IPs during mid-later neocortical neurogenesis. Moreover, in LncBAR knockout mice, depletion of the neural progenitor pool at embryonic stage results in fewer adult neural progenitor cells in the subventricular zone of lateral ventricles, leading to a failure in adult neurogenesis to replenish the olfactory bulb. LncBAR binds to BRG1, the core enzymatic component of the BAF chromatin-remodeling complex. LncBAR depletion enhances association of BRG1 with the genomic locus of, and suppresses the expression of, Zbtb20, a transcription factor gene known to regulate both embryonic and adult neurogenesis. ZBTB20 overexpression in LncBAR-knockout neural precursors reverses compromised cell cycle progressions of IPs.
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Affiliation(s)
- Andi Wang
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute at School of Medicine, Department of Neurosurgery, Zhongnan Hospital of Wuhan University, College of Life Sciences, Wuhan University, Wuhan, China430071
| | - Junbao Wang
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute at School of Medicine, Department of Neurosurgery, Zhongnan Hospital of Wuhan University, College of Life Sciences, Wuhan University, Wuhan, China430071
| | - Kuan Tian
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute at School of Medicine, Department of Neurosurgery, Zhongnan Hospital of Wuhan University, College of Life Sciences, Wuhan University, Wuhan, China430071
| | - Dawei Huo
- Department of Neurosurgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China200072
| | - Hanzhe Ye
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute at School of Medicine, Department of Neurosurgery, Zhongnan Hospital of Wuhan University, College of Life Sciences, Wuhan University, Wuhan, China430071
| | - Si Li
- State Key Laboratory of Experimental Hematology, The Province and Ministry Co-Sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Key Laboratory of Cellular Homeostasis and Human Diseases, Department of Cell Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China 300070
| | - Chen Zhao
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute at School of Medicine, Department of Neurosurgery, Zhongnan Hospital of Wuhan University, College of Life Sciences, Wuhan University, Wuhan, China430071
| | - Bo Zhang
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute at School of Medicine, Department of Neurosurgery, Zhongnan Hospital of Wuhan University, College of Life Sciences, Wuhan University, Wuhan, China430071
| | - Yue Zheng
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute at School of Medicine, Department of Neurosurgery, Zhongnan Hospital of Wuhan University, College of Life Sciences, Wuhan University, Wuhan, China430071
| | - Lichao Xu
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute at School of Medicine, Department of Neurosurgery, Zhongnan Hospital of Wuhan University, College of Life Sciences, Wuhan University, Wuhan, China430071
| | - Xiaojiao Hua
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute at School of Medicine, Department of Neurosurgery, Zhongnan Hospital of Wuhan University, College of Life Sciences, Wuhan University, Wuhan, China430071
| | - Kun Wang
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute at School of Medicine, Department of Neurosurgery, Zhongnan Hospital of Wuhan University, College of Life Sciences, Wuhan University, Wuhan, China430071
| | - Qing-Feng Wu
- State Key Laboratory of Molecular Development Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China 100101
| | - Xudong Wu
- State Key Laboratory of Experimental Hematology, The Province and Ministry Co-Sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Key Laboratory of Cellular Homeostasis and Human Diseases, Department of Cell Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China 300070
| | - Tao Zeng
- Department of Neurosurgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China200072
| | - Ying Liu
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute at School of Medicine, Department of Neurosurgery, Zhongnan Hospital of Wuhan University, College of Life Sciences, Wuhan University, Wuhan, China430071
| | - Yan Zhou
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute at School of Medicine, Department of Neurosurgery, Zhongnan Hospital of Wuhan University, College of Life Sciences, Wuhan University, Wuhan, China430071
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12
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Sun Y, Preiss NK, Valenteros KB, Kamal Y, Usherwood YK, Frost HR, Usherwood EJ. Zbtb20 Restrains CD8 T Cell Immunometabolism and Restricts Memory Differentiation and Antitumor Immunity. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2020; 205:2649-2666. [PMID: 32998985 PMCID: PMC7931848 DOI: 10.4049/jimmunol.2000459] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 09/04/2020] [Indexed: 12/20/2022]
Abstract
CD8 T cell differentiation is orchestrated by dynamic metabolic changes that direct activation, proliferation, cytotoxic function, and epigenetic changes. We report that the BTB-ZF family transcriptional repressor Zbtb20 negatively regulates CD8 T cell metabolism and memory differentiation in mice. Effector and memory CD8 T cells with conditional Zbtb20 deficiency displayed enhanced mitochondrial and glycolytic metabolism, and memory CD8 T cells had enhanced spare respiratory capacity. Furthermore, Zbtb20-deficient CD8 T cells displayed increased flexibility in the use of mitochondrial fuel sources. Phenotypic and transcriptional skewing toward the memory fate was observed during the CD8 T cell response to Listeria monocytogenes Memory cells mounted larger secondary responses and conferred better protection following tumor challenge. These data suggest that inactivation of Zbtb20 may offer an approach to enhance metabolic activity and flexibility and improve memory CD8 T cell differentiation, useful attributes for T cells used in adoptive immunotherapy.
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Affiliation(s)
- Yanbo Sun
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH 03755; and
| | - Nicholas K Preiss
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH 03755; and
| | - Kristine B Valenteros
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH 03755; and
| | - Yasmin Kamal
- Department of Biomedical Data Science, Geisel School of Medicine at Dartmouth, Lebanon, NH 03756
| | - Young-Kwang Usherwood
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH 03755; and
| | - H Robert Frost
- Department of Biomedical Data Science, Geisel School of Medicine at Dartmouth, Lebanon, NH 03756
| | - Edward J Usherwood
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH 03755; and
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13
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Falcone C, Santo M, Liuzzi G, Cannizzaro N, Grudina C, Valencic E, Peruzzotti-Jametti L, Pluchino S, Mallamaci A. Foxg1 Antagonizes Neocortical Stem Cell Progression to Astrogenesis. Cereb Cortex 2020; 29:4903-4918. [PMID: 30821834 DOI: 10.1093/cercor/bhz031] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 01/06/2019] [Accepted: 02/09/2019] [Indexed: 12/12/2022] Open
Abstract
Neocortical astrogenesis follows neuronogenesis and precedes oligogenesis. Among key factors dictating its temporal articulation, there are progression rates of pallial stem cells (SCs) towards astroglial lineages as well as activation rates of astrocyte differentiation programs in response to extrinsic gliogenic cues. In this study, we showed that high Foxg1 SC expression antagonizes astrocyte generation, while stimulating SC self-renewal and committing SCs to neuronogenesis. We found that mechanisms underlying this activity are mainly cell autonomous and highly pleiotropic. They include a concerted downregulation of 4 key effectors channeling neural SCs to astroglial fates, as well as defective activation of core molecular machineries implementing astroglial differentiation programs. Next, we found that SC Foxg1 levels specifically decline during the neuronogenic-to-gliogenic transition, pointing to a pivotal Foxg1 role in temporal modulation of astrogenesis. Finally, we showed that Foxg1 inhibits astrogenesis from human neocortical precursors, suggesting that this is an evolutionarily ancient trait.
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Affiliation(s)
- Carmen Falcone
- Laboratory of Cerebral Cortex Development, Neuroscience Area, SISSA, Trieste, Italy
| | - Manuela Santo
- Laboratory of Cerebral Cortex Development, Neuroscience Area, SISSA, Trieste, Italy
| | - Gabriele Liuzzi
- Laboratory of Cerebral Cortex Development, Neuroscience Area, SISSA, Trieste, Italy
| | - Noemi Cannizzaro
- Laboratory of Cerebral Cortex Development, Neuroscience Area, SISSA, Trieste, Italy
| | - Clara Grudina
- Laboratory of Cerebral Cortex Development, Neuroscience Area, SISSA, Trieste, Italy
| | - Erica Valencic
- Department of Diagnostics, Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - Luca Peruzzotti-Jametti
- Dept of Clinical Neurosciences, University of Cambridge, Clifford Allbutt Building -- Cambridge Biosciences Campus, Hills Road, Cambridge, UK
| | - Stefano Pluchino
- Dept of Clinical Neurosciences, University of Cambridge, Clifford Allbutt Building -- Cambridge Biosciences Campus, Hills Road, Cambridge, UK
| | - Antonello Mallamaci
- Laboratory of Cerebral Cortex Development, Neuroscience Area, SISSA, Trieste, Italy
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14
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Ripamonti S, Shomroni O, Rhee JS, Chowdhury K, Jahn O, Hellmann KP, Bonn S, Brose N, Tirard M. SUMOylation controls the neurodevelopmental function of the transcription factor Zbtb20. J Neurochem 2020; 154:647-661. [PMID: 32233089 DOI: 10.1111/jnc.15008] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 02/12/2020] [Accepted: 03/10/2020] [Indexed: 12/15/2022]
Abstract
SUMOylation is a dynamic post-translational protein modification that primarily takes place in cell nuclei, where it plays a key role in multiple DNA-related processes. In neurons, the SUMOylation-dependent control of a subset of neuronal transcription factors is known to regulate various aspects of nerve cell differentiation, development, and function. In an unbiased screen for endogenous SUMOylation targets in the developing mouse brain, based on a His6 -HA-SUMO1 knock-in mouse line, we previously identified the transcription factor Zinc finger and BTB domain-containing 20 (Zbtb20) as a new SUMO1-conjugate. We show here that the three key SUMO paralogues SUMO1, SUMO2, and SUMO3 can all be conjugated to Zbtb20 in vitro in HEK293FT cells, and we confirm the SUMOylation of Zbtb20 in vivo in mouse brain. Using primary hippocampal neurons from wild-type and Zbtb20 knock-out (KO) mice as a model system, we then demonstrate that the expression of Zbtb20 is required for proper nerve cell development and neurite growth and branching. Furthermore, we show that the SUMOylation of Zbtb20 is essential for its function in this context, and provide evidence indicating that SUMOylation affects the Zbtb20-dependent transcriptional profile of neurons. Our data highlight the role of SUMOylation in the regulation of neuronal transcription factors that determine nerve cell development, and they demonstrate that key functions of the transcription factor Zbtb20 in neuronal development and neurite growth are under obligatory SUMOylation control.
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Affiliation(s)
- Silvia Ripamonti
- Department of Molecular Neurobiology, Max Planck Institute of Experimental Medicine, Göttingen, Germany
| | - Orr Shomroni
- NGS Integrative Genomics Core Unit, Department of Human Genetics, University Medical Center Göttingen, Göttingen, Germany
| | - Jeong Seop Rhee
- Department of Molecular Neurobiology, Max Planck Institute of Experimental Medicine, Göttingen, Germany
| | - Kamal Chowdhury
- Max Planck Institute of Biophysical Chemistry, Göttingen, Germany
| | - Olaf Jahn
- Proteomics Group, Max Planck Institute of Experimental Medicine, Göttingen, Germany
| | - Klaus Peter Hellmann
- Department of Molecular Neurobiology, Max Planck Institute of Experimental Medicine, Göttingen, Germany
| | - Stefan Bonn
- Institute of Medical Systems Biology, Center for Molecular Neurobiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,German Center for Neurodegenerative Diseases, Tübingen, Germany
| | - Nils Brose
- Department of Molecular Neurobiology, Max Planck Institute of Experimental Medicine, Göttingen, Germany
| | - Marilyn Tirard
- Department of Molecular Neurobiology, Max Planck Institute of Experimental Medicine, Göttingen, Germany
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15
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Satb2 is required for the regionalization of retrosplenial cortex. Cell Death Differ 2019; 27:1604-1617. [PMID: 31666685 PMCID: PMC7206047 DOI: 10.1038/s41418-019-0443-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 10/10/2019] [Accepted: 10/11/2019] [Indexed: 02/08/2023] Open
Abstract
The retrosplenial cortex (Rsp) is a transitional cortex located between the neocortex and archicortex, but the molecular mechanism specifying Rsp from the archicortex remains elusive. We here report that the transcription factor Satb2 is required for specifying Rsp identity during its morphogenesis. In Satb2 CKO mice, the boundary between the Rsp and archicortex [i.e., subiculum (SubC)] disappears as early as E17.5, and Rsp efferent projection is aberrant. Rsp-specific genes are lost, whereas SubC-specific genes are ectopically expressed in Rsp of Satb2 CKO mice. Furthermore, cell-autonomous role of Satb2 in maintaining Rsp neuron identity is revealed by inactivation of Satb2 in Rsp neurons. Finally, Satb2 represses the transcription of Nr4a2. The misexpression of Nr4a2 together with Ctip2 induces expression of SubC-specific genes in wild-type Rsp, and simultaneous knockdown of these two genes in Rsp Satb2-mutant cells prevents their fate transition to SubC identity. Thus, Satb2 serves as a determinant gene in the Rsp regionalization by repressing Nr4a2 and Ctip2 during cortical development.
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16
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Jones KA, Luo Y, Dukes-Rimsky L, Srivastava DP, Koul-Tewari R, Russell TA, Shapiro LP, Srivastava AK, Penzes P. Neurodevelopmental disorder-associated ZBTB20 gene variants affect dendritic and synaptic structure. PLoS One 2018; 13:e0203760. [PMID: 30281617 PMCID: PMC6169859 DOI: 10.1371/journal.pone.0203760] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 08/27/2018] [Indexed: 11/18/2022] Open
Abstract
Dendritic spine morphology and dendritic arborization are key determinants of neuronal connectivity and play critical roles in learning, memory and behavior function. Recently, defects of ZBTB20, a BTB and zinc finger domain containing transcriptional repressor, have been implicated in a wide range of neurodevelopmental disorders, including intellectual disability and autism. Here we show distinct effects of expression of two major isoforms, long and short, of ZBTB20, and its neurodevelopmental disorder-linked variants, on dendritic architecture of cultured rat cortical pyramidal neurons. The N-terminal of ZBTB20 showed a role in regulating dendritic spine morphology. Two ZBTB20 single nucleotide variants, located at the N-terminal and central regions of the protein and potentially conferring autism risk, altered dendritic spine morphology. In contrast, a single nucleotide variant identified in patients with intellectual disability and located at the C-terminus of ZBTB20 affected dendritic arborization and dendritic length but had no effect on dendritic spine morphology. Furthermore, truncation of the extreme C-terminus of ZBTB20 caused spine and dendritic morphological changes that were similar but distinct from those caused by the C-terminal variant. Taken together, our study suggests ZBTB20's role in dendritic and synaptic structure and provide possible mechanisms of its effect in neurodevelopmental disorders.
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Affiliation(s)
- Kelly A. Jones
- Department of Physiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
| | - Yue Luo
- J.C. Self Research Institute of Human Genetics, Greenwood Genetic Center, Greenwood, South Carolina, United States of America
| | - Lynn Dukes-Rimsky
- J.C. Self Research Institute of Human Genetics, Greenwood Genetic Center, Greenwood, South Carolina, United States of America
| | - Deepak P. Srivastava
- Department of Physiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
| | - Richa Koul-Tewari
- J.C. Self Research Institute of Human Genetics, Greenwood Genetic Center, Greenwood, South Carolina, United States of America
- Department of Genetics and Biochemistry, Clemson University, Clemson, South Carolina, United States of America
| | - Theron A. Russell
- Department of Physiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
| | - Lauren P. Shapiro
- Department of Physiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
| | - Anand K. Srivastava
- J.C. Self Research Institute of Human Genetics, Greenwood Genetic Center, Greenwood, South Carolina, United States of America
- Department of Genetics and Biochemistry, Clemson University, Clemson, South Carolina, United States of America
- * E-mail: (PP); (AKS)
| | - Peter Penzes
- Department of Physiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
- * E-mail: (PP); (AKS)
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17
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Ho KWD, Han S, Nielsen JV, Jancic D, Hing B, Fiedorowicz J, Weissman MM, Levinson DF, Potash JB. Genome-wide association study of seasonal affective disorder. Transl Psychiatry 2018; 8:190. [PMID: 30217971 PMCID: PMC6138666 DOI: 10.1038/s41398-018-0246-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 07/18/2018] [Accepted: 08/07/2018] [Indexed: 12/30/2022] Open
Abstract
Family and twin studies have shown a genetic component to seasonal affective disorder (SAD). A number of candidate gene studies have examined the role of variations within biologically relevant genes in SAD susceptibility, but few genome-wide association studies (GWAS) have been performed to date. The authors aimed to identify genetic risk variants for SAD through GWAS. The authors performed a GWAS for SAD in 1380 cases and 2937 controls of European-American (EA) origin, selected from samples for GWAS of major depressive disorder and of bipolar disorder. Further bioinformatic analyses were conducted to examine additional genomic and biological evidence associated with the top GWAS signals. No susceptibility loci for SAD were identified at a genome-wide significant level. The strongest association was at an intronic variant (rs139459337) within ZBTB20 (odds ratio (OR) = 1.63, p = 8.4 × 10-7), which encodes a transcriptional repressor that has roles in neurogenesis and in adult brain. Expression quantitative trait loci (eQTL) analysis showed that the risk allele "T" of rs139459337 is associated with reduced mRNA expression of ZBTB20 in human temporal cortex (p = 0.028). Zbtb20 is required for normal murine circadian rhythm and for entrainment to a shortened day. Of the 330 human orthologs of murine genes directly repressed by Zbtb20, there were 32 associated with SAD in our sample (at p < 0.05), representing a significant enrichment of ZBTB20 targets among our SAD genetic association signals (fold = 1.93, p = 0.001). ZBTB20 is a candidate susceptibility gene for SAD, based on a convergence of genetic, genomic, and biological evidence. Further studies are necessary to confirm its role in SAD.
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Affiliation(s)
- Kwo Wei David Ho
- Department of Neurology, University of Florida, Gainesville, FL, USA
| | - Shizhong Han
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Jakob V Nielsen
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, Odense C, Denmark
| | - Dubravka Jancic
- Department of Psychiatry, University of Iowa, Iowa City, IA, USA
| | - Benjamin Hing
- Department of Psychiatry, University of Iowa, Iowa City, IA, USA
| | - Jess Fiedorowicz
- Department of Psychiatry, University of Iowa, Iowa City, IA, USA
| | - Myrna M Weissman
- Department of Psychiatry, College of Physicians and Surgeons, Columbia University, New York, NY, USA
- The New York State Psychiatric Institute, New York, NY, USA
| | - Douglas F Levinson
- Department of Psychiatry, Stanford University School of Medicine, Palo Alto, CA, USA
| | - James B Potash
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA.
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18
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Stellacci E, Steindl K, Joset P, Mercurio L, Anselmi M, Cecchetti S, Gogoll L, Zweier M, Hackenberg A, Bocchinfuso G, Stella L, Tartaglia M, Rauch A. Clinical and functional characterization of two novel ZBTB20
mutations causing Primrose syndrome. Hum Mutat 2018; 39:959-964. [DOI: 10.1002/humu.23546] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 04/23/2018] [Accepted: 04/26/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Emilia Stellacci
- Dipartimento di Oncologia e Medicina Molecolare; Istituto Superiore di Sanità; Rome Italy
| | - Katharina Steindl
- Institute of Medical Genetics; University of Zurich; Schlieren-Zurich; Switzerland
| | - Pascal Joset
- Institute of Medical Genetics; University of Zurich; Schlieren-Zurich; Switzerland
| | - Laura Mercurio
- Dipartimento di Oncologia e Medicina Molecolare; Istituto Superiore di Sanità; Rome Italy
| | - Massimiliano Anselmi
- Dipartimento di Scienze e Tecnologie Chimiche; Università di Roma ‘‘Tor Vergata,’’ Rome; Italy
| | - Serena Cecchetti
- Servizio grandi strumentazioni e core facilities; Istituto Superiore di Sanità; Rome Italy
| | - Laura Gogoll
- Institute of Medical Genetics; University of Zurich; Schlieren-Zurich; Switzerland
| | - Markus Zweier
- Institute of Medical Genetics; University of Zurich; Schlieren-Zurich; Switzerland
| | - Annette Hackenberg
- Division of Paediatric Neurology; University Children's Hospital Zurich; Zürich Switzerland
| | - Gianfranco Bocchinfuso
- Dipartimento di Scienze e Tecnologie Chimiche; Università di Roma ‘‘Tor Vergata,’’ Rome; Italy
| | - Lorenzo Stella
- Dipartimento di Scienze e Tecnologie Chimiche; Università di Roma ‘‘Tor Vergata,’’ Rome; Italy
| | - Marco Tartaglia
- Genetics and Rare Diseases Research Division; Ospedale Pediatrico Bambino Gesù; Rome Italy
| | - Anita Rauch
- Institute of Medical Genetics; University of Zurich; Schlieren-Zurich; Switzerland
- radiz-Rare Disease Initiative Zürich; Clinical Research Priority Program for Rare Diseases University of Zurich; Zurich Switzerland
- Neuroscience Center Zurich; University of Zurich and ETH Zurich; Zurich Switzerland
- Zurich Center for Integrative Human Physiology; University of Zurich; Zurich Switzerland
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19
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Zbtb20 Regulates Developmental Neurogenesis in the Olfactory Bulb and Gliogenesis After Adult Brain Injury. Mol Neurobiol 2018; 56:567-582. [DOI: 10.1007/s12035-018-1104-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 05/03/2018] [Indexed: 01/02/2023]
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20
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Abstract
The evolutionary relationships of the mammalian neocortex and avian dorsal telencephalon (DT) nuclei have been debated for more than a century. Despite their central importance to this debate, nonavian reptiles remain underexplored with modern molecular techniques. Reptile studies harbor great potential for understanding the changes in DT organization that occurred in the early evolution of amniotes. They may also help clarify the specializations in the avian DT, which comprises a massive, cell-dense dorsal ventricular ridge (DVR) and a nuclear dorsal-most structure, the Wulst. Crocodilians are phylogenetically and anatomically attractive for DT comparative studies: they are the closest living relatives of birds and have a strikingly bird-like DVR, but they also possess a highly differentiated reptile cerebral cortex. We studied the DT of the American alligator, Alligator mississippiensis, at late embryonic stages with a panel of molecular marker genes. Gene expression and cytoarchitectonic analyses identified clear homologs of all major avian DVR subdivisions including a mesopallium, an extensive nidopallium with primary sensory input territories, and an arcopallium. The alligator medial cortex is divided into three components that resemble the mammalian dentate gyrus, CA fields, and subiculum in gene expression and topography. The alligator dorsal cortex contains putative homologs of neocortical input, output, and intratelencephalic projection neurons and, most notably, these are organized into sublayers similar to mammalian neocortical layers. Our findings on the molecular anatomy of the crocodilian DT are summarized in an atlas of the alligator telencephalon.
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Affiliation(s)
- Steven D Briscoe
- Committee on Development, Regeneration, and Stem Cell Biology, University of Chicago, Chicago, Illinois
| | - Clifton W Ragsdale
- Committee on Development, Regeneration, and Stem Cell Biology, University of Chicago, Chicago, Illinois.,Department of Neurobiology, University of Chicago, Chicago, Illinois.,Department of Organismal Biology and Anatomy, University of Chicago, Chicago, Illinois
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21
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Soltesz I, Losonczy A. CA1 pyramidal cell diversity enabling parallel information processing in the hippocampus. Nat Neurosci 2018; 21:484-493. [PMID: 29593317 PMCID: PMC5909691 DOI: 10.1038/s41593-018-0118-0] [Citation(s) in RCA: 169] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 02/06/2018] [Indexed: 11/08/2022]
Abstract
Hippocampal network operations supporting spatial navigation and declarative memory are traditionally interpreted in a framework where each hippocampal area, such as the dentate gyrus, CA3, and CA1, consists of homogeneous populations of functionally equivalent principal neurons. However, heterogeneity within hippocampal principal cell populations, in particular within pyramidal cells at the main CA1 output node, is increasingly recognized and includes developmental, molecular, anatomical, and functional differences. Here we review recent progress in the delineation of hippocampal principal cell subpopulations by focusing on radially defined subpopulations of CA1 pyramidal cells, and we consider how functional segregation of information streams, in parallel channels with nonuniform properties, could represent a general organizational principle of the hippocampus supporting diverse behaviors.
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Affiliation(s)
- Ivan Soltesz
- Department of Neurosurgery and Stanford Neurosciences Institute, Stanford University, Stanford, CA, USA
| | - Attila Losonczy
- Department of Neuroscience, Columbia University, New York, NY, USA.
- Mortimer B. Zuckerman Mind Brain Behavior Institute, Columbia University, New York, NY, USA.
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22
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Kan H, Huang Y, Li X, Liu D, Chen J, Shu M. Zinc finger protein ZBTB20 is an independent prognostic marker and promotes tumor growth of human hepatocellular carcinoma by repressing FoxO1. Oncotarget 2017; 7:14336-49. [PMID: 26893361 PMCID: PMC4924719 DOI: 10.18632/oncotarget.7425] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Accepted: 01/29/2016] [Indexed: 12/17/2022] Open
Abstract
Zinc finger and BTB domain-containing 20 (ZBTB20) is a new BTB/POZ-domain gene and a member of the POK family of transcriptional repressors. Notably, the role of ZBTB20 and its underlying mechanisms involved in hepatocarcinogenesis are poorly investigated. In this study, the expression of ZBTB20 was significantly overexpressed in hepatocellular carcinoma (HCC) tissues. The positive expression of ZBTB20 was associated with large tumor size, high Edmondson-Steiner grading and advanced tumor-node-metastasis (TNM) tumor stage. Additionally, HCC patients with positive expression of ZBTB20 had a poorer 5-year survival. Multivariate analyses revealed that ZBTB20 overexpression was an independent prognostic factor for HCC. Gain- and loss-of-function experiments demonstrated that ZBTB20 promoted HCC cell viability, proliferation, tumorigenicity, and cell cycle progression. Mechanistically, Cyclin D1 and Cyclin E were increased, while p21 and p27 were decreased by ZBTB20 in HCC cells. FoxO1 was inversely correlated with ZBTB20 protein expression in the same cohort of HCC specimens. We further revealed that FoxO1 was transcriptionally repressed by ZBTB20 in HCC. Moreover, restoration of FoxO1 expression partially abrogated ZBTB20-induced HCC cell proliferation and growth entry in vitro and in vivo. Collectively, these results indicate that ZBTB20 may serve as a prognostic marker and promotes tumor growth of HCC via transcriptionally repressing FoxO1.
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Affiliation(s)
- Heping Kan
- Department of Hepatobiliary Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Yuqi Huang
- Department of Hepatobiliary Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Xianghong Li
- Department of Hepatobiliary Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Dingli Liu
- Department of Infectious Disease, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Jianjia Chen
- Department of Hepatobiliary Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Miaojiang Shu
- Department of Hepatobiliary Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
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23
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Assessment of the association between ZBTB20 rs9841504 polymorphism and gastric and esophageal cancer susceptibility: a meta-analysis. Int J Biol Markers 2017; 32:e96-e101. [PMID: 27646774 DOI: 10.5301/jbm.5000231] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/03/2016] [Indexed: 01/29/2023]
Abstract
BACKGROUND The protein encoded by ZBTB20 is a member of the POK family, whose members function as transcriptional repressors through interactions mediated by their conserved C2H2 Krüppel-type zinc finger and BTB/POZ domains. Polymorphisms in ZBTB20 appeared to be associated with gastric and esophageal cancer susceptibility in biological models, but the results of these studies were inconclusive. Therefore, we conducted a meta-analysis by pooling all available data to assess the exact association between the ZBTB20 rs9841504 polymorphism and gastric and esophageal cancer susceptibility. METHOD The meta-analysis was performed for homozygote comparison, heterozygote comparison, and dominant and recessive models by applying a fixed- or random-effects model. The pooled odds ratios (ORs) with the corresponding confidence intervals (CIs) were calculated. Moreover, the data were analyzed using the Stata 12.0 software(StataCorp). RESULT A total of 8 independent case-control studies comprising 9,994 cases and 10,258 controls were included. We found a significant association between the rs9841504 polymorphism and decreased gastric cancer susceptibility in the allelic, homozygous, dominant and recessive models (B vs. A:OR = 0.797, 95% CI 0.644-0.986, p = 0.036; BB vs. AA:OR = 0.601, 95% CI 0.366-0.988, p = 0.045; BA + BB vs. AA:OR = 0.789, 95% CI 0.627-0.992, p = 0.043; BB vs. BA + AA:OR = 0.635, 95% CI 0.405-0.997, p = 0.049). Conversely, no association between the rs9841504 polymorphism and esophageal cancer susceptibility was found. In subgroup analysis by ethnicity, we observed a significantly decreased susceptibility to gastric cancer in Asian populations in the allele contrast, homozygous and recessive models (B vs. A:OR = 0.791, 95% CI 0.628-0.996, p = 0.046; BB vs. AA:OR = 0.559, 95% CI 0.323-0.966, p = 0.037; BB vs. BA + AA:OR = 0.593, 95% CI 0.361-0.972, p = 0.038). CONCLUSIONS In summary, our work suggests that the ZBTB20 rs9841504 polymorphism is a protective factor for gastric cancer rather than esophageal cancer.
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dos Santos FC, Peixoto MGCD, Fonseca PADS, Pires MDFÁ, Ventura RV, Rosse IDC, Bruneli FAT, Machado MA, Carvalho MRS. Identification of Candidate Genes for Reactivity in Guzerat (Bos indicus) Cattle: A Genome-Wide Association Study. PLoS One 2017; 12:e0169163. [PMID: 28125592 PMCID: PMC5268462 DOI: 10.1371/journal.pone.0169163] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 12/13/2016] [Indexed: 01/24/2023] Open
Abstract
Temperament is fundamental to animal production due to its direct influence on the animal-herdsman relationship. When compared to calm animals, the aggressive, anxious or fearful ones exhibit less weight gain, lower reproductive efficiency, decreased milk production and higher herd maintenance costs, all of which contribute to reduced profits. However, temperament is a trait that is complex and difficult to assess. Recently, a new quantitative system, REATEST®, for assessing reactivity, a phenotype of temperament, was developed. Herein, we describe the results of a Genome-wide association study for reactivity, assessed using REATEST® with a sample of 754 females from five dual-purpose (milk and meat production) Guzerat (Bos indicus) herds. Genotyping was performed using a 50k SNP chip and a two-step mixed model approach (Grammar-Gamma) with a one-by-one marker regression was used to identify QTLs. QTLs for reactivity were identified on chromosomes BTA1, BTA5, BTA14, and BTA25. Five intronic and two intergenic markers were significantly associated with reactivity. POU1F1, DRD3, VWA3A, ZBTB20, EPHA6, SNRPF and NTN4 were identified as candidate genes. Previous QTL reports for temperament traits, covering areas surrounding the SNPs/genes identified here, further corroborate these associations. The seven genes identified in the present study explain 20.5% of reactivity variance and give a better understanding of temperament biology.
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Affiliation(s)
| | | | | | | | - Ricardo Vieira Ventura
- Center for Genetic Improvement of Livestock, University of Guelph, Guelph, Canada
- Beef Improvement Opportunities, Guelph, Canada
| | - Izinara da Cruz. Rosse
- Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Hervé B, Fauvert D, Dard R, Roume J, Cognard S, Goidin D, Lozach F, Molina-Gomes D, Vialard F. The emerging microduplication 3q13.31: Expanding the genotype-phenotype correlations of the reciprocal microdeletion 3q13.31 syndrome. Eur J Med Genet 2016; 59:463-9. [DOI: 10.1016/j.ejmg.2016.08.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 07/18/2016] [Accepted: 08/23/2016] [Indexed: 01/26/2023]
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Alonso-Martin S, Rochat A, Mademtzoglou D, Morais J, de Reyniès A, Auradé F, Chang THT, Zammit PS, Relaix F. Gene Expression Profiling of Muscle Stem Cells Identifies Novel Regulators of Postnatal Myogenesis. Front Cell Dev Biol 2016; 4:58. [PMID: 27446912 PMCID: PMC4914952 DOI: 10.3389/fcell.2016.00058] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 06/02/2016] [Indexed: 01/02/2023] Open
Abstract
Skeletal muscle growth and regeneration require a population of muscle stem cells, the satellite cells, located in close contact to the myofiber. These cells are specified during fetal and early postnatal development in mice from a Pax3/7 population of embryonic progenitor cells. As little is known about the genetic control of their formation and maintenance, we performed a genome-wide chronological expression profile identifying the dynamic transcriptomic changes involved in establishment of muscle stem cells through life, and acquisition of muscle stem cell properties. We have identified multiple genes and pathways associated with satellite cell formation, including set of genes specifically induced (EphA1, EphA2, EfnA1, EphB1, Zbtb4, Zbtb20) or inhibited (EphA3, EphA4, EphA7, EfnA2, EfnA3, EfnA4, EfnA5, EphB2, EphB3, EphB4, EfnBs, Zfp354c, Zcchc5, Hmga2) in adult stem cells. Ephrin receptors and ephrins ligands have been implicated in cell migration and guidance in many tissues including skeletal muscle. Here we show that Ephrin receptors and ephrins ligands are also involved in regulating the adult myogenic program. Strikingly, impairment of EPHB1 function in satellite cells leads to increased differentiation at the expense of self-renewal in isolated myofiber cultures. In addition, we identified new transcription factors, including several zinc finger proteins. ZFP354C and ZCCHC5 decreased self-renewal capacity when overexpressed, whereas ZBTB4 increased it, and ZBTB20 induced myogenic progression. The architectural and transcriptional regulator HMGA2 was involved in satellite cell activation. Together, our study shows that transcriptome profiling coupled with myofiber culture analysis, provides an efficient system to identify and validate candidate genes implicated in establishment/maintenance of muscle stem cells. Furthermore, tour de force transcriptomic profiling provides a wealth of data to inform for future stem cell-based muscle therapies.
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Affiliation(s)
- Sonia Alonso-Martin
- Institut Mondor de Recherche Biomédicale, INSERM U955-E10Créteil, France; Université Paris Est, Faculté de MedecineCréteil, France; Ecole Nationale Veterinaire d'AlfortMaison Alfort, France
| | - Anne Rochat
- Institut Mondor de Recherche Biomédicale, INSERM U955-E10 Créteil, France
| | - Despoina Mademtzoglou
- Institut Mondor de Recherche Biomédicale, INSERM U955-E10Créteil, France; Université Paris Est, Faculté de MedecineCréteil, France; Ecole Nationale Veterinaire d'AlfortMaison Alfort, France
| | - Jessica Morais
- Institut Mondor de Recherche Biomédicale, INSERM U955-E10 Créteil, France
| | - Aurélien de Reyniès
- Programme Cartes d'Identité des Tumeurs, Ligue Nationale Contre le Cancer Paris, France
| | - Frédéric Auradé
- Sorbonne Universités, UPMC Univ Paris 06, INSERM UMRS974, Center for Research in Myology Paris, France
| | - Ted Hung-Tse Chang
- Institut Mondor de Recherche Biomédicale, INSERM U955-E10 Créteil, France
| | - Peter S Zammit
- Randall Division of Cell and Molecular Biophysics, King's College London London, UK
| | - Frédéric Relaix
- Institut Mondor de Recherche Biomédicale, INSERM U955-E10Créteil, France; Université Paris Est, Faculté de MedecineCréteil, France; Ecole Nationale Veterinaire d'AlfortMaison Alfort, France; Etablissement Français du SangCréteil, France; APHP, Hopitaux Universitaires Henri Mondor, DHU Pepsy and Centre de Référence des Maladies Neuromusculaires GNMHCréteil, France
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Tonchev AB, Tuoc TC, Rosenthal EH, Studer M, Stoykova A. Zbtb20 modulates the sequential generation of neuronal layers in developing cortex. Mol Brain 2016; 9:65. [PMID: 27282384 PMCID: PMC4901408 DOI: 10.1186/s13041-016-0242-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 05/21/2016] [Indexed: 11/25/2022] Open
Abstract
Background During corticogenesis, genetic programs encoded in progenitor cells at different developmental stages and inherited in postmitotic neurons specify distinct layer and area identities. Transcription factor Zbtb20 has been shown to play a role for hippocampal development but whether it is implicated in mammalian neocortical morphogenesis remains unknown. Results Here, we report that during embyogenesis transcription factor Zbtb20 has a dynamic spatio-temporal expression pattern in mitotic cortical progenitors through which it modulates the sequential generation of cortical neuronal layer identities. Zbtb20 knock out mice exhibited enhanced populations of early born L6-L4 neuronal subtypes and a dramatic reduction of the late born L3/L2 neurons. This defect was due to a temporal misbalance in the production of earlier versus later born neurons, leading to a progressive diminishing of the progenitor pool for the generation of L3-L2 neurons. Zbtb20 implements these temporal effects in part by binding to promoter of the orphan nuclear receptor CoupTF1/Nr2f1. In addition to its effects exerted in cortical progenitors, the postmitotic expression of Zbtb20 in L3/L2 neurons starting at birth may contribute to their proper differentiation and migration. Conclusions Our findings reveal Zbtb20 as a novel temporal regulator for the generation of layer-specific neuronal identities. Electronic supplementary material The online version of this article (doi:10.1186/s13041-016-0242-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Anton B Tonchev
- Molecular Developmental Neurobiology Laboratory, Max Planck Institute of Biophysical Chemistry, Am Fassberg, 37077, Gottingen, Germany. .,Center for Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB), 37075, Göttingen, Germany. .,Department of Anatomy, Histology and Embryology, Medical University-Varna, Varna, Bulgaria.
| | - Tran Cong Tuoc
- Center for Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB), 37075, Göttingen, Germany.,Molecular Neurobiology Group, Institute of Neuroanatomy, University of Goettingen Medical Center, Goettingen, Germany
| | - Eva H Rosenthal
- Molecular Developmental Neurobiology Laboratory, Max Planck Institute of Biophysical Chemistry, Am Fassberg, 37077, Gottingen, Germany
| | - Michèle Studer
- University Nice Sophia Antipolis, iBV, UMR 7277, F-06108, Nice, France.,Inserm, iBV, U1091, F-06108, Nice, France
| | - Anastassia Stoykova
- Molecular Developmental Neurobiology Laboratory, Max Planck Institute of Biophysical Chemistry, Am Fassberg, 37077, Gottingen, Germany. .,Center for Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB), 37075, Göttingen, Germany. .,Department of Anatomy, Histology and Embryology, Medical University-Varna, Varna, Bulgaria.
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Zbtb20 promotes astrocytogenesis during neocortical development. Nat Commun 2016; 7:11102. [PMID: 27000654 PMCID: PMC4804180 DOI: 10.1038/ncomms11102] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 02/19/2016] [Indexed: 11/08/2022] Open
Abstract
Multipotent neural precursor cells (NPCs) generate astrocytes at late stages of mammalian neocortical development. Many signalling pathways that regulate astrocytogenesis directly induce the expression of GFAP, a marker of terminally differentiated astrocytes. However, astrocyte specification occurs before GFAP expression and essential factors for the specification step have remained elusive. Here we show that Zbtb20 regulates astrocyte specification in the mouse neocortex. Zbtb20 is highly expressed in late-stage NPCs and their astrocytic progeny. Overexpression and knockdown of Zbtb20 promote and suppress astrocytogenesis, respectively, although Zbtb20 does not directly activate the Gfap promoter. Astrocyte induction by Zbtb20 is suppressed by knockdown of Sox9 or NFIA. Furthermore, in the astrocyte lineage, Zbtb20 directly represses the expression of Brn2, which encodes a protein necessary for upper-layer neuron specification. Zbtb20 is thus a key determinant of astrocytogenesis, in which it collaborates with Sox9 and NFIA, and acts in part through direct repression of Brn2 expression. Astrocytes in the brain are derived from neural precursor cells (NPCs). Here, Motoshi Nagao and colleagues show that the transcription repressor Zbtb20 regulates astrocyte specification in the mouse neocortex.
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Barral S, Cheng R, Reitz C, Vardarajan B, Lee J, Kunkle B, Beecham G, Cantwell LS, Pericak-Vance MA, Farrer LA, Haines JL, Goate AM, Foroud T, Boerwinkle E, Schellenberg GD, Mayeux R. Linkage analyses in Caribbean Hispanic families identify novel loci associated with familial late-onset Alzheimer's disease. Alzheimers Dement 2015; 11:1397-1406. [PMID: 26433351 PMCID: PMC4690771 DOI: 10.1016/j.jalz.2015.07.487] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 06/08/2015] [Accepted: 07/13/2015] [Indexed: 10/23/2022]
Abstract
INTRODUCTION We performed linkage analyses in Caribbean Hispanic families with multiple late-onset Alzheimer's disease (LOAD) cases to identify regions that may contain disease causative variants. METHODS We selected 67 LOAD families to perform genome-wide linkage scan. Analysis of the linked regions was repeated using the entire sample of 282 families. Validated chromosomal regions were analyzed using joint linkage and association. RESULTS We identified 26 regions linked to LOAD (HLOD ≥3.6). We validated 13 of the regions (HLOD ≥2.5) using the entire family sample. The strongest signal was at 11q12.3 (rs2232932: HLODmax = 4.7, Pjoint = 6.6 × 10(-6)), a locus located ∼2 Mb upstream of the membrane-spanning 4A gene cluster. We additionally identified a locus at 7p14.3 (rs10255835: HLODmax = 4.9, Pjoint = 1.2 × 10(-5)), a region harboring genes associated with the nervous system (GARS, GHRHR, and NEUROD6). DISCUSSION Future sequencing efforts should focus on these regions because they may harbor familial LOAD causative mutations.
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Affiliation(s)
- Sandra Barral
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University Medical Center, New York, NY, USA; Gertrude H. Sergievsky Center, Columbia University Medical Center, New York, NY, USA; Department of Neurology, Columbia University Medical Center and New York Presbyterian Hospital, New York, NY, USA
| | - Rong Cheng
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University Medical Center, New York, NY, USA; Gertrude H. Sergievsky Center, Columbia University Medical Center, New York, NY, USA
| | - Christiane Reitz
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University Medical Center, New York, NY, USA; Gertrude H. Sergievsky Center, Columbia University Medical Center, New York, NY, USA; Department of Neurology, Columbia University Medical Center and New York Presbyterian Hospital, New York, NY, USA; Department of Epidemiology, School of Public Health, Columbia University, New York, NY, USA
| | - Badri Vardarajan
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University Medical Center, New York, NY, USA; Gertrude H. Sergievsky Center, Columbia University Medical Center, New York, NY, USA; Department of Neurology, Columbia University Medical Center and New York Presbyterian Hospital, New York, NY, USA
| | - Joseph Lee
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University Medical Center, New York, NY, USA; Gertrude H. Sergievsky Center, Columbia University Medical Center, New York, NY, USA; Department of Epidemiology, School of Public Health, Columbia University, New York, NY, USA
| | - Brian Kunkle
- The John P. Hussman Institute for Human Genomics, University of Miami, Miami, FL, USA
| | - Gary Beecham
- The John P. Hussman Institute for Human Genomics, University of Miami, Miami, FL, USA
| | - Laura S Cantwell
- Perelman School of Medicine University of Pennsylvania, Philadelphia, PA, USA
| | - Margaret A Pericak-Vance
- The John P. Hussman Institute for Human Genomics, University of Miami, Miami, FL, USA; Dr. John T. Macdonald Foundation Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Lindsay A Farrer
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA; Department of Medicine (Biomedical Genetics), Boston University School of Medicine and Public Health, Boston, MA, USA; Department of Neurology, Boston University School of Medicine and Public Health, Boston, MA, USA; Department of Ophthalmology, Boston University School of Medicine and Public Health, Boston, MA, USA; Department of Epidemiology, Boston University School of Medicine and Public Health, Boston, MA, USA
| | - Jonathan L Haines
- Department of Epidemiology & Biostatistics, Case Western Reserve University, Cleveland, OH, USA
| | - Alison M Goate
- Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Tatiana Foroud
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Eric Boerwinkle
- Department of Epidemiology, Human Genetics, and Environmental Sciences (EHGES), University of Texas School of Public Health at Houston, Houston, TX, USA; Human Genetics Center, School of Public Health, University of Texas Health Science Center at Houston, Houston, TX, USA
| | | | - Richard Mayeux
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University Medical Center, New York, NY, USA; Gertrude H. Sergievsky Center, Columbia University Medical Center, New York, NY, USA; Department of Neurology, Columbia University Medical Center and New York Presbyterian Hospital, New York, NY, USA; Department of Epidemiology, School of Public Health, Columbia University, New York, NY, USA.
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Quintela I, Gomez-Guerrero L, Fernandez-Prieto M, Resches M, Barros F, Carracedo A. Female patient with autistic disorder, intellectual disability, and co-morbid anxiety disorder: Expanding the phenotype associated with the recurrent 3q13.2-q13.31 microdeletion. Am J Med Genet A 2015; 167A:3121-9. [PMID: 26332054 DOI: 10.1002/ajmg.a.37292] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 08/02/2015] [Indexed: 01/13/2023]
Abstract
In recent years, the advent of comparative genomic hybridization (CGH) and single nucleotide polymorphism (SNP) arrays and its use as a first genetic test for the diagnosis of patients with neurodevelopmental phenotypes has allowed the identification of novel submicroscopic chromosomal abnormalities (namely, copy number variants or CNVs), imperceptible by conventional cytogenetic techniques. The 3q13.31 microdeletion syndrome (OMIM #615433) has been defined as a genomic disorder mainly characterized by developmental delay, postnatal overgrowth, hypotonia, genital abnormalities in males, and characteristic craniofacial features. Although the 3q13.31 CNVs are variable in size, a 3.4 Mb recurrently altered region at 3q13.2-q13.31 has been recently described and non-allelic homologous recombination (NAHR) mediated by flanking human endogenous retrovirus (HERV-H) elements has been suggested as the mechanism of deletion formation. We expand the phenotypic spectrum associated with this recurrent deletion performing the clinical description of a 9-year-old female patient with autistic disorder, total absence of language, intellectual disability, anxiety disorder and disruptive, and compulsive eating behaviors. The array-based molecular karyotyping allowed the identification of a de novo recurrent 3q13.2-q13.31 deletion encompassing 25 genes. In addition, we compare her clinical phenotype with previous reports of patients with neurodevelopmental and behavioral disorders and proximal 3q microdeletions. Finally, we also review the candidate genes proposed so far for these phenotypes.
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Affiliation(s)
- Ines Quintela
- Grupo de Medicina Xenomica, Universidade de Santiago de Compostela, Centro Nacional de Genotipado-Plataforma de Recursos Biomoleculares y Bioinformaticos-Instituto de Salud Carlos III (CeGen-PRB2-ISCIII), Santiago de Compostela, Spain
| | - Lorena Gomez-Guerrero
- Grupo de Medicina Xenomica, CIBERER, Fundacion Publica Galega de Medicina Xenomica-SERGAS, Santiago de Compostela, Spain
| | - Montse Fernandez-Prieto
- Grupo de Medicina Xenomica, CIBERER, Fundacion Publica Galega de Medicina Xenomica-SERGAS, Santiago de Compostela, Spain
| | - Mariela Resches
- Departamento de Psicologia Evolutiva y de la Educacion, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Francisco Barros
- Grupo de Medicina Xenomica, CIBERER, Fundacion Publica Galega de Medicina Xenomica-SERGAS, Santiago de Compostela, Spain
| | - Angel Carracedo
- Grupo de Medicina Xenomica, Universidade de Santiago de Compostela, Centro Nacional de Genotipado-Plataforma de Recursos Biomoleculares y Bioinformaticos-Instituto de Salud Carlos III (CeGen-PRB2-ISCIII), Santiago de Compostela, Spain.,Grupo de Medicina Xenomica, CIBERER, Fundacion Publica Galega de Medicina Xenomica-SERGAS, Santiago de Compostela, Spain.,Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia
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Zhang H, Cao D, Zhou L, Zhang Y, Guo X, Li H, Chen Y, Spear BT, Wu JW, Xie Z, Zhang WJ. ZBTB20 is a sequence-specific transcriptional repressor of alpha-fetoprotein gene. Sci Rep 2015; 5:11979. [PMID: 26173901 PMCID: PMC4648434 DOI: 10.1038/srep11979] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 06/12/2015] [Indexed: 02/07/2023] Open
Abstract
Alpha-fetoprotein (AFP) represents a classical model system to study developmental gene regulation in mammalian cells. We previously reported that liver ZBTB20 is developmentally regulated and plays a central role in AFP postnatal repression. Here we show that ZBTB20 is a sequence-specific transcriptional repressor of AFP. By ELISA-based DNA-protein binding assay and conventional gel shift assay, we successfully identified a ZBTB20-binding site at −104/−86 of mouse AFP gene, flanked by two HNF1 sites and two C/EBP sites in the proximal promoter. Importantly, mutation of the core sequence in this site fully abolished its binding to ZBTB20 in vitro, as well as the repression of AFP promoter activity by ZBTB20. The unique ZBTB20 site was highly conserved in rat and human AFP genes, but absent in albumin genes. These help to explain the autonomous regulation of albumin and AFP genes in the liver after birth. Furthermore, we demonstrated that transcriptional repression of AFP gene by ZBTB20 was liver-specific. ZBTB20 was dispensable for AFP silencing in other tissues outside liver. Our data define a cognate ZBTB20 site in AFP promoter which mediates the postnatal repression of AFP gene in the liver.
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Affiliation(s)
- Hai Zhang
- 1] Department of Pathophysiology, Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China [2]
| | - Dongmei Cao
- 1] Department of Pathophysiology, Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China [2]
| | - Luting Zhou
- 1] Department of Pathophysiology, Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China [2]
| | - Ye Zhang
- Department of Pathophysiology, Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China
| | - Xiaoqin Guo
- Department of Pathophysiology, Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China
| | - Hui Li
- Department of Pathophysiology, Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China
| | - Yuxia Chen
- Department of Pathophysiology, Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China
| | - Brett T Spear
- Department of Microbiology, Immunology &Molecular Genetics, University of Kentucky College of Medicine, 800 Rose Street, Lexington, KY 40536, USA
| | - Jia-Wei Wu
- MOE Key Laboratory for Bioinformatics, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Zhifang Xie
- Department of Pathophysiology, Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China
| | - Weiping J Zhang
- Department of Pathophysiology, Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China
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Luzzati F. A hypothesis for the evolution of the upper layers of the neocortex through co-option of the olfactory cortex developmental program. Front Neurosci 2015; 9:162. [PMID: 26029038 PMCID: PMC4429232 DOI: 10.3389/fnins.2015.00162] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2015] [Accepted: 04/20/2015] [Indexed: 12/31/2022] Open
Abstract
The neocortex is unique to mammals and its evolutionary origin is still highly debated. The neocortex is generated by the dorsal pallium ventricular zone, a germinative domain that in reptiles give rise to the dorsal cortex. Whether this latter allocortical structure contains homologs of all neocortical cell types it is unclear. Recently we described a population of DCX+/Tbr1+ cells that is specifically associated with the layer II of higher order areas of both the neocortex and of the more evolutionary conserved piriform cortex. In a reptile similar cells are present in the layer II of the olfactory cortex and the DVR but not in the dorsal cortex. These data are consistent with the proposal that the reptilian dorsal cortex is homologous only to the deep layers of the neocortex while the upper layers are a mammalian innovation. Based on our observations we extended these ideas by hypothesizing that this innovation was obtained by co-opting a lateral and/or ventral pallium developmental program. Interestingly, an analysis in the Allen brain atlas revealed a striking similarity in gene expression between neocortical layers II/III and piriform cortex. We thus propose a model in which the early neocortical column originated by the superposition of the lateral olfactory and dorsal cortex. This model is consistent with the fossil record and may account not only for the topological position of the neocortex, but also for its basic cytoarchitectural and hodological features. This idea is also consistent with previous hypotheses that the peri-allocortex represents the more ancient neocortical part. The great advances in deciphering the molecular logic of the amniote pallium developmental programs will hopefully enable to directly test our hypotheses in the next future.
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Affiliation(s)
- Federico Luzzati
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin Turin, Italy ; Neuroscience Institute Cavalieri Ottolenghi Orbassano, Truin, Italy
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Januar V, Saffery R, Ryan J. Epigenetics and depressive disorders: a review of current progress and future directions. Int J Epidemiol 2015; 44:1364-87. [DOI: 10.1093/ije/dyu273] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/18/2014] [Indexed: 12/26/2022] Open
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Zhou G, Jiang X, Zhang H, Lu Y, Liu A, Ma X, Yang G, Yang R, Shen H, Zheng J, Hu Y, Yang X, Zhang WJ, Xie Z. Zbtb20 regulates the terminal differentiation of hypertrophic chondrocytes via repression of Sox9. Development 2015; 142:385-93. [DOI: 10.1242/dev.108530] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The terminal differentiation of hypertrophic chondrocytes is a tightly regulated process that plays a pivotal role in endochondral ossification. As a negative regulator, Sox9 is essentially downregulated in terminally differentiated hypertrophic chondrocytes. However, the underlying mechanism of Sox9 silencing is undefined. Here we show that the zinc finger protein Zbtb20 regulates the terminal differentiation of hypertrophic chondrocytes by repressing Sox9. In the developing skeleton of the mouse, Zbtb20 protein is highly expressed by hypertrophic chondrocytes from late embryonic stages. To determine its physiological role in endochondral ossification, we have generated chondrocyte-specific Zbtb20 knockout mice and demonstrate that disruption of Zbtb20 in chondrocytes results in delayed endochondral ossification and postnatal growth retardation. Zbtb20 deficiency caused a delay in cartilage vascularization and an expansion of the hypertrophic zone owing to reduced expression of Vegfa in the hypertrophic zone. Interestingly, Sox9, a direct suppressor of Vegfa expression, was ectopically upregulated at both mRNA and protein levels in the late Zbtb20-deficient hypertrophic zone. Furthermore, knockdown of Sox9 greatly increased Vegfa expression in Zbtb20-deficient hypertrophic chondrocytes. Our findings point to Zbtb20 as a crucial regulator governing the terminal differentiation of hypertrophic chondrocytes at least partially through repression of Sox9.
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Affiliation(s)
- Guangdi Zhou
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
| | - Xuchao Jiang
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
| | - Hai Zhang
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
| | - Yinzhong Lu
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
| | - Anjun Liu
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
- Department of Cell Biology, Second Military Medical University, Shanghai 200433, China
| | - Xianhua Ma
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
| | - Guan Yang
- Genetic Laboratory of Development and Diseases, Institute of Biotechnology, Beijing 100071, China
| | - Rui Yang
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
| | - Hongxing Shen
- Department of Orthopedics, Changhai Hospital, Shanghai 200433, China
| | - Jianming Zheng
- Department of Pathology, Changhai Hospital, Shanghai 200433, China
| | - Yiping Hu
- Department of Cell Biology, Second Military Medical University, Shanghai 200433, China
| | - Xiao Yang
- Genetic Laboratory of Development and Diseases, Institute of Biotechnology, Beijing 100071, China
| | - Weiping J. Zhang
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
| | - Zhifang Xie
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
- Department of Cell Biology, Second Military Medical University, Shanghai 200433, China
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Specific deficiency of Plzf paralog, Zbtb20, in Sertoli cells does not affect spermatogenesis and fertility in mice. Sci Rep 2014; 4:7062. [PMID: 25395169 PMCID: PMC4231391 DOI: 10.1038/srep07062] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 10/29/2014] [Indexed: 02/05/2023] Open
Abstract
Ztbt20 is a POK family transcription factor and primarily functions through its conserved C2H2 Krüppel type zinc finger and BTB/POZ domains. The present study was designed to define the function of the Zbtb20, in vivo, during mouse spermatogenesis. Immunohistochemical studies revealed that ZBTB20 protein was localized specifically in the nuclei of Sertoli cells in seminiferous tubules. To investigate its role during spermatogenesis, we crossed Amh-Cre transgenic mice with Zbtb20 floxp mice to generate conditionally knockout mice (cKO) in which Zbtb20 was specifically deleted in Sertoli cells. The cKO mice were fertile and did not show any detectable abnormalities in spermatogenesis. Taken together, though specific deletion of transcription factor Zbtb20 in Sertoli cells has no apparent influence on spermatogenesis, its specific localization in Sertoli cells makes Zbtb20 a useful marker for the identification of Sertoli cells in seminiferous tubules.
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36
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Ren AJ, Wang K, Zhang H, Liu A, Ma X, Liang Q, Cao D, Wood JN, He DZ, Ding YQ, Yuan WJ, Xie Z, Zhang WJ. ZBTB20 regulates nociception and pain sensation by modulating TRP channel expression in nociceptive sensory neurons. Nat Commun 2014; 5:4984. [PMID: 25369838 PMCID: PMC6687506 DOI: 10.1038/ncomms5984] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Accepted: 08/14/2014] [Indexed: 12/21/2022] Open
Abstract
In mammals, pain sensation is initiated by the detection of noxious stimuli through specialized transduction ion channels and receptors in nociceptive sensory neurons. Transient receptor potential (TRP) channels are the key sensory transducers that confer nociceptors distinct sensory modalities. However, the regulatory mechanisms about their expression are poorly defined. Here we show that the zinc-finger protein ZBTB20 regulates TRP channels expression in nociceptors. ZBTB20 is highly expressed in nociceptive sensory neurons of dorsal root ganglia. Disruption of ZBTB20 in nociceptors led to a marked decrease in the expression levels of TRPV1, TRPA1 and TRPM8 and the response of calcium flux and whole-cell currents evoked by their respective specific agonists. Phenotypically, the mice lacking ZBTB20 specifically in nociceptors showed a defect in nociception and pain sensation in response to thermal, mechanical and inflammatory stimulation. Our findings point to ZBTB20 as a critical regulator of nociception and pain sensation by modulating TRP channels expression in nociceptors.
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Affiliation(s)
- An-Jing Ren
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
| | - Kai Wang
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
| | - Huan Zhang
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
| | - Anjun Liu
- 1] Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China [2] Department of Cell Biology, Second Military Medical University, Shanghai 200433, China
| | - Xianhua Ma
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
| | - Qing Liang
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
| | - Dongmei Cao
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
| | - John N Wood
- Biology Department, University College London, Gower Street, London WC1E 6BT, UK
| | - David Z He
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, Nebraska 68102, USA
| | - Yu-Qiang Ding
- Department of Anatomy and Neurobiology, Tongji University School of Medicine, Shanghai 200092, China
| | - Wen-Jun Yuan
- Department of Physiology and Neurobiology, Key Lab of Ministry of Education in Fertility Preservation and Maintenance, Ningxia Medical University, Yinchuan 750004, China
| | - Zhifang Xie
- 1] Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China [2] Department of Cell Biology, Second Military Medical University, Shanghai 200433, China
| | - Weiping J Zhang
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
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37
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Zhao JG, Ren KM, Tang J. Zinc finger protein ZBTB20 promotes cell proliferation in non-small cell lung cancer through repression of FoxO1. FEBS Lett 2014; 588:4536-42. [PMID: 25311537 DOI: 10.1016/j.febslet.2014.10.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 09/25/2014] [Accepted: 10/06/2014] [Indexed: 01/05/2023]
Abstract
In the present study, we found that ZBTB20, a member of the POK (POZ and Krüppel) family of transcriptional repressors, was significantly up-regulated in lung cancer tissues, compared with adjacent normal tissues. Our in vitro studies further found that ZBTB20 overexpression promoted, while its inhibition using small interfering RNA suppressed cell proliferation. Consistently, key regulators in cell-cycle progression, such as Cyclin D1, Cyclin E, P21 and P27, were also regulated by ZBTB20. At the molecular level, we further revealed that FoxO1, a tumor suppressor in multiple human cancers, was transcriptionally repressed by ZBTB20. Therefore, our results highlight an important role for ZBTB20 in controlling NSCLC development, which might be helpful to identify potential therapeutic targets for its treatment.
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Affiliation(s)
- Jun-gang Zhao
- Department of Thoracic Surgery, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China.
| | - Kai-ming Ren
- Department of Thoracic Surgery, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China
| | - Jun Tang
- Department of Thoracic Surgery, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China
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38
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Xu HT, Han Z, Gao P, He S, Li Z, Shi W, Kodish O, Shao W, Brown KN, Huang K, Shi SH. Distinct lineage-dependent structural and functional organization of the hippocampus. Cell 2014; 157:1552-64. [PMID: 24949968 DOI: 10.1016/j.cell.2014.03.067] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 02/21/2014] [Accepted: 03/29/2014] [Indexed: 12/21/2022]
Abstract
The hippocampus, as part of the cerebral cortex, is essential for memory formation and spatial navigation. Although it has been extensively studied, especially as a model system for neurophysiology, the cellular processes involved in constructing and organizing the hippocampus remain largely unclear. Here, we show that clonally related excitatory neurons in the developing hippocampus are progressively organized into discrete horizontal, but not vertical, clusters in the stratum pyramidale, as revealed by both cell-type-specific retroviral labeling and mosaic analysis with double markers (MADM). Moreover, distinct from those in the neocortex, sister excitatory neurons in the cornu ammonis 1 region of the hippocampus rarely develop electrical or chemical synapses with each other. Instead, they preferentially receive common synaptic input from nearby fast-spiking (FS), but not non-FS, interneurons and exhibit synchronous synaptic activity. These results suggest that shared inhibitory input may specify horizontally clustered sister excitatory neurons as functional units in the hippocampus.
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Affiliation(s)
- Hua-Tai Xu
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Zhi Han
- College of Software, Nankai University, 94 Weijin Road, Tianjin 300071, China
| | - Peng Gao
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Graduate Program in Neuroscience, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065, USA
| | - Shuijin He
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Zhizhong Li
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Wei Shi
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Graduate Program in Neuroscience, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065, USA
| | - Oren Kodish
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Wei Shao
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Graduate Program in Biochemistry and Structural Biology, Cell and Developmental Biology, and Molecular Biology, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065, USA
| | - Keith N Brown
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Graduate Program in Neuroscience, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065, USA
| | - Kun Huang
- Department of Biomedical Informatics, The Ohio State University, 333 West 10(th) Avenue, Columbus, OH 43210, USA
| | - Song-Hai Shi
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Graduate Program in Neuroscience, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065, USA; Graduate Program in Biochemistry and Structural Biology, Cell and Developmental Biology, and Molecular Biology, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065, USA.
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39
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Rasmussen MB, Nielsen JV, Lourenço CM, Melo JB, Halgren C, Geraldi CVL, Marques W, Rodrigues GR, Thomassen M, Bak M, Hansen C, Ferreira SI, Venâncio M, Henriksen KF, Lind-Thomsen A, Carreira IM, Jensen NA, Tommerup N. Neurodevelopmental disorders associated with dosage imbalance ofZBTB20correlate with the morbidity spectrum of ZBTB20 candidate target genes. J Med Genet 2014; 51:605-13. [DOI: 10.1136/jmedgenet-2014-102535] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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40
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Sugiyama T, Osumi N, Katsuyama Y. A novel cell migratory zone in the developing hippocampal formation. J Comp Neurol 2014; 522:3520-38. [PMID: 24771490 DOI: 10.1002/cne.23621] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 04/25/2014] [Accepted: 04/25/2014] [Indexed: 11/08/2022]
Abstract
The hippocampal formation (HF) is a unique structure in the mammalian brain and is subdivided into the dentate gyrus, Ammon's horn, and subiculum by their functions and connectivity in the neuronal circuit. Because behaviors of the neural stem cells, neuronal progenitors, and the differentiating neurons are complex during hippocampal morphogenesis, the differentiation of these subdivisions has not been well understood. In this study, we investigated embryonic and postnatal expression of the proteins Prox1, Math2, and Ctip2, which clearly indicate principal cells of the dentate gyrus (Prox1 positive) and Ammon's horn (Math2 and Ctip2 positive). Expression patterns of Prox1 and Math2 were consistent with previously suggested localization of migratory pathways of the dentate granule cells and hippocampal pyramidal cells. Interestingly, we found intermingling of Prox1-expressing cells and Math2-expressing cells in a cell migratory stream, suggesting previously unknown behaviors of differentiating cells of the HF.
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Affiliation(s)
- Taku Sugiyama
- Department of Developmental Neuroscience, Tohoku University Graduate School of Medicine, Sendai, 980-8575, Japan
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41
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Chevrier S, Emslie D, Shi W, Kratina T, Wellard C, Karnowski A, Erikci E, Smyth GK, Chowdhury K, Tarlinton D, Corcoran LM. The BTB-ZF transcription factor Zbtb20 is driven by Irf4 to promote plasma cell differentiation and longevity. ACTA ACUST UNITED AC 2014; 211:827-40. [PMID: 24711583 PMCID: PMC4010913 DOI: 10.1084/jem.20131831] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Zbtb20 facilitates terminal differentiation of B cells into antibody-secreting cells, and its expression is dependent on Irf4 and independent of Blimp1. The transcriptional network regulating antibody-secreting cell (ASC) differentiation has been extensively studied, but our current understanding is limited. The mechanisms of action of known “master” regulators are still unclear, while the participation of new factors is being revealed. Here, we identify Zbtb20, a Bcl6 homologue, as a novel regulator of late B cell development. Within the B cell lineage, Zbtb20 is specifically expressed in B1 and germinal center B cells and peaks in long-lived bone marrow (BM) ASCs. Unlike Bcl6, an inhibitor of ASC differentiation, ectopic Zbtb20 expression in primary B cells facilitates terminal B cell differentiation to ASCs. In plasma cell lines, Zbtb20 induces cell survival and blocks cell cycle progression. Immunized Zbtb20-deficient mice exhibit curtailed humoral responses and accelerated loss of antigen-specific plasma cells, specifically from the BM pool. Strikingly, Zbtb20 induction does not require Blimp1 but depends directly on Irf4, acting at a newly identified Zbtb20 promoter in ASCs. These results identify Zbtb20 as an important player in late B cell differentiation and provide new insights into this complex process.
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Affiliation(s)
- Stéphane Chevrier
- Molecular Immunology Division, 2 Bioinformatics Division, 3 Immunology Division, The Walter and Eliza Hall Institute, Parkville, Victoria 3052, Australia
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42
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Davies MN, Krause L, Bell JT, Gao F, Ward KJ, Wu H, Lu H, Liu Y, Tsai PC, Collier DA, Murphy T, Dempster E, Mill J, Battle A, Mostafavi S, Zhu X, Henders A, Byrne E, Wray NR, Martin NG, Spector TD, Wang J. Hypermethylation in the ZBTB20 gene is associated with major depressive disorder. Genome Biol 2014; 15:R56. [PMID: 24694013 PMCID: PMC4072999 DOI: 10.1186/gb-2014-15-4-r56] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 04/02/2014] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Although genetic variation is believed to contribute to an individual's susceptibility to major depressive disorder, genome-wide association studies have not yet identified associations that could explain the full etiology of the disease. Epigenetics is increasingly believed to play a major role in the development of common clinical phenotypes, including major depressive disorder. RESULTS Genome-wide MeDIP-Sequencing was carried out on a total of 50 monozygotic twin pairs from the UK and Australia that are discordant for depression. We show that major depressive disorder is associated with significant hypermethylation within the coding region of ZBTB20, and is replicated in an independent cohort of 356 unrelated case-control individuals. The twins with major depressive disorder also show increased global variation in methylation in comparison with their unaffected co-twins. ZBTB20 plays an essential role in the specification of the Cornu Ammonis-1 field identity in the developing hippocampus, a region previously implicated in the development of major depressive disorder. CONCLUSIONS Our results suggest that aberrant methylation profiles affecting the hippocampus are associated with major depressive disorder and show the potential of the epigenetic twin model in neuro-psychiatric disease.
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Slomianka L, Drenth T, Cavegn N, Menges D, Lazic SE, Phalanndwa M, Chimimba CT, Amrein I. The hippocampus of the eastern rock sengi: cytoarchitecture, markers of neuronal function, principal cell numbers, and adult neurogenesis. Front Neuroanat 2013; 7:34. [PMID: 24194702 PMCID: PMC3810719 DOI: 10.3389/fnana.2013.00034] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Accepted: 09/26/2013] [Indexed: 12/04/2022] Open
Abstract
The brains of sengis (elephant shrews, order Macroscelidae) have long been known to contain a hippocampus that in terms of allometric progression indices is larger than that of most primates and equal in size to that of humans. In this report, we provide descriptions of hippocampal cytoarchitecture in the eastern rock sengi (Elephantulus myurus), of the distributions of hippocampal calretinin, calbindin, parvalbumin, and somatostatin, of principal neuron numbers, and of cell numbers related to proliferation and neuronal differentiation in adult hippocampal neurogenesis. Sengi hippocampal cytoarchitecture is an amalgamation of characters that are found in CA1 of, e.g., guinea pig and rabbits and in CA3 and dentate gyrus of primates. Correspondence analysis of total cell numbers and quantitative relations between principal cell populations relate this sengi to macaque monkeys and domestic pigs, and distinguish the sengi from distinct patterns of relations found in humans, dogs, and murine rodents. Calretinin and calbindin are present in some cell populations that also express these proteins in other species, e.g., interneurons at the stratum oriens/alveus border or temporal hilar mossy cells, but neurons expressing these markers are often scarce or absent in other layers. The distributions of parvalbumin and somatostatin resemble those in other species. Normalized numbers of PCNA+ proliferating cells and doublecortin-positive (DCX+) differentiating cells of neuronal lineage fall within the overall ranges of murid rodents, but differed from three murid species captured in the same habitat in that fewer DCX+ cells relative to PCNA+ were observed. The large and well-differentiated sengi hippocampus is not accompanied by correspondingly sized cortical and subcortical limbic areas that are the main hippocampal sources of afferents and targets of efferents. This points to intrinsic hippocampal information processing as the selective advantage of the large sengi hippocampus.
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Affiliation(s)
- Lutz Slomianka
- Institute of Anatomy, University of ZürichZürich, Switzerland
| | - Tanja Drenth
- Institute of Anatomy, University of ZürichZürich, Switzerland
| | - Nicole Cavegn
- Institute of Anatomy, University of ZürichZürich, Switzerland
| | - Dominik Menges
- Institute of Anatomy, University of ZürichZürich, Switzerland
| | - Stanley E. Lazic
- In Silico Lead Discovery, Novartis Institutes for Biomedical ResearchBasel, Switzerland
| | - Mashudu Phalanndwa
- Mammal Research Institute, Department of Zoology and Entomology, University of PretoriaHatfield, South Africa
- Western Cape Nature Conservation Board (CapeNature)Cape Town, South Africa
| | - Christian T. Chimimba
- Mammal Research Institute, Department of Zoology and Entomology, University of PretoriaHatfield, South Africa
- Department of Science and Technology-National Research Foundation Centre of Excellence for Invasion Biology, Department of Zoology and Entomology University of PretoriaHatfield, South Africa
| | - Irmgard Amrein
- Institute of Anatomy, University of ZürichZürich, Switzerland
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Shuvarikov A, Campbell IM, Dittwald P, Neill NJ, Bialer MG, Moore C, Wheeler PG, Wallace SE, Hannibal MC, Murray MF, Giovanni MA, Terespolsky D, Sodhi S, Cassina M, Viskochil D, Moghaddam B, Herman K, Brown CW, Beck CR, Gambin A, Cheung SW, Patel A, Lamb AN, Shaffer LG, Ellison JW, Ravnan JB, Stankiewicz P, Rosenfeld JA. Recurrent HERV-H-mediated 3q13.2-q13.31 deletions cause a syndrome of hypotonia and motor, language, and cognitive delays. Hum Mutat 2013; 34:1415-23. [PMID: 23878096 DOI: 10.1002/humu.22384] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Accepted: 07/11/2013] [Indexed: 11/09/2022]
Abstract
We describe the molecular and clinical characterization of nine individuals with recurrent, 3.4-Mb, de novo deletions of 3q13.2-q13.31 detected by chromosomal microarray analysis. All individuals have hypotonia and language and motor delays; they variably express mild to moderate cognitive delays (8/9), abnormal behavior (7/9), and autism spectrum disorders (3/9). Common facial features include downslanting palpebral fissures with epicanthal folds, a slightly bulbous nose, and relative macrocephaly. Twenty-eight genes map to the deleted region, including four strong candidate genes, DRD3, ZBTB20, GAP43, and BOC, with important roles in neural and/or muscular development. Analysis of the breakpoint regions based on array data revealed directly oriented human endogenous retrovirus (HERV-H) elements of ~5 kb in size and of >95% DNA sequence identity flanking the deletion. Subsequent DNA sequencing revealed different deletion breakpoints and suggested nonallelic homologous recombination (NAHR) between HERV-H elements as a mechanism of deletion formation, analogous to HERV-I-flanked and NAHR-mediated AZFa deletions. We propose that similar HERV elements may also mediate other recurrent deletion and duplication events on a genome-wide scale. Observation of rare recurrent chromosomal events such as these deletions helps to further the understanding of mechanisms behind naturally occurring variation in the human genome and its contribution to genetic disease.
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Affiliation(s)
- Andrey Shuvarikov
- Signature Genomic Laboratories, PerkinElmer, Inc, Spokane, Washington
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45
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Zinc finger protein ZBTB20 promotes Toll-like receptor-triggered innate immune responses by repressing IκBα gene transcription. Proc Natl Acad Sci U S A 2013; 110:11097-102. [PMID: 23776228 DOI: 10.1073/pnas.1301257110] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Toll-like receptor (TLR) signaling is critical in innate response against invading pathogens. However, the molecular mechanisms for full activation of TLR-triggered innate immunity need to be fully elucidated. The broad complex tramtrack bric-a-brac/poxvirus and zinc finger (BTB/POZ) family is a class of transcription factors involved in many biological processes. However, few BTB/POZ proteins were reported to function in innate immune response. Zinc finger and BTB domain-containing 20 (ZBTB20), a member of BTB/POZ family, functions in neurogenesis and represses α-fetoprotein gene transcription in liver. However, the immunological functions of ZBTB20 remain unknown. Here, we found that myeloid cell-specific ZBTB20 KO mice were resistant to endotoxin shock and Escherichia coli-caused sepsis. ZBTB20 deficiency attenuated TLR-triggered production of proinflammatory cytokines and type I IFN in macrophages, which attributed to higher abundance of IκBα protein and impaired activity of NF-κB. Furthermore, ChIP and next generation high-throughput DNA sequencing assay showed that ZBTB20 specifically bound to IκBα gene promoter (+1 to +60 region) after TLR activation. ZBTB20 could inhibit IκBα gene transcription, govern IκBα protein expression, and then promote NF-κB activation. Therefore, transcriptional repressor ZBTB20 is needed to promote full activation of TLR signaling and TLR-triggered innate immune response by selectively suppressing the suppressor IκBα gene transcription.
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46
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Nielsen JV, Thomassen M, Møllgård K, Noraberg J, Jensen NA. Zbtb20 defines a hippocampal neuronal identity through direct repression of genes that control projection neuron development in the isocortex. ACTA ACUST UNITED AC 2013; 24:1216-29. [PMID: 23283686 DOI: 10.1093/cercor/bhs400] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Hippocampal pyramidal neurons are important for encoding and retrieval of spatial maps and episodic memories. While previous work has shown that Zbtb20 is a cell fate determinant for CA1 pyramidal neurons, the regulatory mechanisms governing this process are not known. In this study, we demonstrate that Zbtb20 binds to genes that control neuronal subtype specification in the developing isocortex, including Cux1, Cux2, Fezf2, Foxp2, Mef2c, Rorb, Satb2, Sox5, Tbr1, Tle4, and Zfpm2. We show that Zbtb20 represses these genes during ectopic CA1 pyramidal neuron development in transgenic mice. These data reveal a novel regulatory mechanism by which Zbtb20 suppresses the acquisition of an isocortical fate during archicortical neurogenesis to ensure commitment to a CA1 pyramidal neuron fate. We further show that the expression pattern of Zbtb20 is evolutionary conserved in the fetal human hippocampus, where it is complementary to the expression pattern of the Zbtb20 target gene Tbr1. Therefore, the disclosed Zbtb20-mediated transcriptional repressor mechanism may be involved in development of the human archicortex.
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Affiliation(s)
- Jakob V Nielsen
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, DK-5000 Odense C, Denmark
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47
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Iwano T, Masuda A, Kiyonari H, Enomoto H, Matsuzaki F. Prox1 postmitotically defines dentate gyrus cells by specifying granule cell identity over CA3 pyramidal cell fate in the hippocampus. Development 2012; 139:3051-62. [DOI: 10.1242/dev.080002] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The brain is composed of diverse types of neurons that fulfill distinct roles in neuronal circuits, as manifested by the hippocampus, where pyramidal neurons and granule cells constitute functionally distinct domains: cornu ammonis (CA) and dentate gyrus (DG), respectively. Little is known about how these two types of neuron differentiate during hippocampal development, although a set of transcription factors that is expressed in progenitor cells is known to be required for the survival of granule cells. Here, we demonstrate in mice that Prox1, a transcription factor constitutively expressed in the granule cell lineage, postmitotically functions to specify DG granule cell identity. Postmitotic elimination of Prox1 caused immature DG neurons to lose the granule cell identity and in turn terminally differentiate into the pyramidal cell type manifesting CA3 neuronal identity. By contrast, Prox1 overexpression caused opposing effects on presumptive hippocampal pyramidal cells. These results indicate that the immature DG cell has the potential to become a granule cell or a pyramidal cell, and Prox1 defines the granule cell identity. This bi-potency is lost in mature DG cells, although Prox1 is still required for correct gene expression in DG granule cells. Thus, our data indicate that Prox1 acts as a postmitotic cell fate determinant for DG granule cells over the CA3 pyramidal cell fate and is crucial for maintenance of the granule cell identity throughout the life.
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Affiliation(s)
- Tomohiko Iwano
- Laboratory for Cell Asymmetry, at RIKEN Center for Developmental Biology, 2-2-3 Minatojima-Minamimachi, Chuou-ku, Kobe 650-0047, Japan
| | - Aki Masuda
- Laboratory for Cell Asymmetry, at RIKEN Center for Developmental Biology, 2-2-3 Minatojima-Minamimachi, Chuou-ku, Kobe 650-0047, Japan
| | - Hiroshi Kiyonari
- Laboratory for Animal Resources and Genetic Engineering, at RIKEN Center for Developmental Biology, 2-2-3 Minatojima-Minamimachi, Chuou-ku, Kobe 650-0047, Japan
| | - Hideki Enomoto
- Laboratory for Neuronal Differentiation and Regeneration, at RIKEN Center for Developmental Biology, 2-2-3 Minatojima-Minamimachi, Chuou-ku, Kobe 650-0047, Japan
| | - Fumio Matsuzaki
- Laboratory for Cell Asymmetry, at RIKEN Center for Developmental Biology, 2-2-3 Minatojima-Minamimachi, Chuou-ku, Kobe 650-0047, Japan
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Ren A, Zhang H, Xie Z, Ma X, Ji W, He DZZ, Yuan W, Ding YQ, Zhang XH, Zhang WJ. Regulation of hippocampus-dependent memory by the zinc finger protein Zbtb20 in mature CA1 neurons. J Physiol 2012; 590:4917-32. [PMID: 22777671 DOI: 10.1113/jphysiol.2012.234187] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
The mammalian hippocampus harbours neural circuitry that is crucial for associative learning and memory. The mechanisms that underlie the development and regulation of this complex circuitry are not fully understood. Our previous study established an essential role for the zinc finger protein Zbtb20 in the specification of CA1 field identity in the developing hippocampus. Here, we show that conditionally deleting Zbtb20 specifically in mature CA1 pyramidal neurons impaired hippocampus-dependent memory formation, without affecting hippocampal architecture or the survival, identity and basal excitatory synaptic activity of CA1 pyramidal neurons. We demonstrate that mature CA1-specific Zbtb20 knockout mice exhibited reductions in long-term potentiation (LTP) and NMDA receptor (NMDAR)-mediated excitatory post-synaptic currents. Furthermore, we show that activity-induced phosphorylation of ERK and CREB is impaired in the hippocampal CA1 of Zbtb20 mutant mice. Collectively, these results indicate that Zbtb20 in mature CA1 plays an important role in LTP and memory by regulating NMDAR activity, and activation of ERK and CREB.
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Affiliation(s)
- Anjing Ren
- Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
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49
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Rosenthal EH, Tonchev AB, Stoykova A, Chowdhury K. Regulation of archicortical arealization by the transcription factor Zbtb20. Hippocampus 2012; 22:2144-56. [PMID: 22689450 DOI: 10.1002/hipo.22035] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/16/2012] [Indexed: 12/20/2022]
Abstract
The molecular mechanisms of regionalization of the medial pallium (MP), the anlage of the hippocampus, and transitional (cingulate and retrosplenial) cortices are largely unknown. Previous analyses have outlined an important role of the transcription factor (TF) Zbtb20 for hippocampal CA1 field specification (Nielsen et al. (2007) Development 134:1133-1140; Nielsen et al. (2010) Cereb Cortex 20:1904-1914; Xie et al. (2010) Proc Natl Acad Sci USA 107:6510-6515). Here, we present novel data showing that Zbtb20 exhibits a ventral(high)-to-dorsal(low) gradient of expression in MP progenitors as well as an expression in postmitotic cells at the transitional cortex/neocortex border. Our detailed pattern analysis revealed that in Zbtb20 loss-of-function the molecular borders between neocortical, transitional, and hippocampal fields are progressively shifted ventrally, leading to an ectopic positioning of all dorsal fields into the neighboring ventrally located areas. Thus, in addition to its known importance for the specification of the hippocampal CA1 sector, the graded expression of TF Zbtb20 in ventricular zone of MP appears to translate early positional information for establishment of all developing MP fields. Our data also suggest that the signaling factor Wnt3a is a putative molecular partner of TF Zbtb20 in this patterning process.
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Affiliation(s)
- Eva H Rosenthal
- Max Planck Institute for Biophysical Chemistry, Am Fassberg, Goettingen, Germany
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50
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Molin AM, Andrieux J, Koolen DA, Malan V, Carella M, Colleaux L, Cormier-Daire V, David A, de Leeuw N, Delobel B, Duban-Bedu B, Fischetto R, Flinter F, Kjaergaard S, Kok F, Krepischi AC, Le Caignec C, Ogilvie CM, Maia S, Mathieu-Dramard M, Munnich A, Palumbo O, Papadia F, Pfundt R, Reardon W, Receveur A, Rio M, Ronsbro Darling L, Rosenberg C, Sá J, Vallee L, Vincent-Delorme C, Zelante L, Bondeson ML, Annerén G. A novel microdeletion syndrome at 3q13.31 characterised by developmental delay, postnatal overgrowth, hypoplastic male genitals, and characteristic facial features. J Med Genet 2011; 49:104-9. [PMID: 22180640 PMCID: PMC3261728 DOI: 10.1136/jmedgenet-2011-100534] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Congenital deletions affecting 3q11q23 have rarely been reported and only five cases have been molecularly characterised. Genotype-phenotype correlation has been hampered by the variable sizes and breakpoints of the deletions. In this study, 14 novel patients with deletions in 3q11q23 were investigated and compared with 13 previously reported patients. METHODS Clinical data were collected from 14 novel patients that had been investigated by high resolution microarray techniques. Molecular investigation and updated clinical information of one cytogenetically previously reported patient were also included. RESULTS The molecular investigation identified deletions in the region 3q12.3q21.3 with different boundaries and variable sizes. The smallest studied deletion was 580 kb, located in 3q13.31. Genotype-phenotype comparison in 24 patients sharing this shortest region of overlapping deletion revealed several common major characteristics including significant developmental delay, muscular hypotonia, a high arched palate, and recognisable facial features including a short philtrum and protruding lips. Abnormal genitalia were found in the majority of males, several having micropenis. Finally, a postnatal growth pattern above the mean was apparent. The 580 kb deleted region includes five RefSeq genes and two of them are strong candidate genes for the developmental delay: DRD3 and ZBTB20. CONCLUSION A newly recognised 3q13.31 microdeletion syndrome is delineated which is of diagnostic and prognostic value. Furthermore, two genes are suggested to be responsible for the main phenotype.
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Affiliation(s)
- Anna-Maja Molin
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden.
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