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Zhao D, Shen C, Gao T, Li H, Guo Y, Li F, Liu C, Liu Y, Chen X, Zhang X, Wu Y, Yu Y, Lin M, Yuan Y, Chen X, Huang X, Yang S, Yu J, Zhang J, Zheng B. Myotubularin related protein 7 is essential for the spermatogonial stem cell homeostasis via PI3K/AKT signaling. Cell Cycle 2019; 18:2800-2813. [PMID: 31478454 DOI: 10.1080/15384101.2019.1661174] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
Myotubularin related protein 7 (MTMR7), a key member of the MTMR family, depicts phosphatase activity and is involved in myogenesis and tumor growth. We have previously identified MTMR7 in the proteomic profile of mouse spermatogonial stem cell (SSC) maturation and differentiation, implying that MTMR7 is associated with neonatal testicular development. In this study, to further explore the distribution and function of MTMR7 in mouse testis, we studied the effect of Mtmr7 knockdown on neonatal testicular development by testicular and SSC culture methods. Our results revealed that MTMR7 is exclusively located in early germ cells. Deficiency of MTMR7 by morpholino in neonatal testis caused excessive SSC proliferation, which was attributable to the aberrant PI3K/AKT signaling activation. Altogether, our study demonstrates that MTMR7 maintains SSC homeostasis by inhibiting PI3K/AKT signaling activation.
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Affiliation(s)
- Dan Zhao
- Fourth Affiliated Hospital of Jiangsu University , Zhenjiang , China
| | - Cong Shen
- Center for Reproduction and Genetics, Suzhou Municipal Hospital, the Affiliated Suzhou Hospital of Nanjing Medical University , Suzhou , China.,State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University , Nanjing , China
| | - Tingting Gao
- Center of Clinical Reproductive Medicine, the Affiliated Changzhou Matemity and Child Health Care Hospital of Nanjing Medical University , Changzhou , China
| | - Hong Li
- Center for Reproduction and Genetics, Suzhou Municipal Hospital, the Affiliated Suzhou Hospital of Nanjing Medical University , Suzhou , China
| | - Yueshuai Guo
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University , Nanjing , China.,The Affiliated Wuxi Matemity and Child Health Care Hospital of Nanjing Medical University , Wuxi , China
| | - Feng Li
- Fourth Affiliated Hospital of Jiangsu University , Zhenjiang , China.,Reproductive Medicine Center, Northern Jiangsu Province Hospital , Yangzhou , China
| | - Chenchen Liu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University , Nanjing , China
| | - Yuanyuan Liu
- Center for Reproduction and Genetics, Suzhou Municipal Hospital, the Affiliated Suzhou Hospital of Nanjing Medical University , Suzhou , China.,State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University , Nanjing , China
| | - Xia Chen
- Department of Obstetrics and Gynecology, Affiliated Hospital of Jiangsu University, Jiangsu University , Zhenjiang , China
| | - Xi Zhang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University , Nanjing , China
| | - Yangyang Wu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University , Nanjing , China
| | - Yi Yu
- Center for Reproduction and Genetics, Suzhou Municipal Hospital, the Affiliated Suzhou Hospital of Nanjing Medical University , Suzhou , China
| | - Meng Lin
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University , Nanjing , China
| | - Yan Yuan
- Human Reproductive and Genetic center, Affiliated Hospital of Jiangnan University , Wuxi , China
| | - Xiaofang Chen
- Fourth Affiliated Hospital of Jiangsu University , Zhenjiang , China
| | - Xiaoyan Huang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University , Nanjing , China
| | - Shenmin Yang
- Center for Reproduction and Genetics, Suzhou Municipal Hospital, the Affiliated Suzhou Hospital of Nanjing Medical University , Suzhou , China
| | - Jun Yu
- Department of Obstetrics and Gynecology, Affiliated Hospital of Jiangsu University, Jiangsu University , Zhenjiang , China
| | - Jun Zhang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University , Nanjing , China
| | - Bo Zheng
- Center for Reproduction and Genetics, Suzhou Municipal Hospital, the Affiliated Suzhou Hospital of Nanjing Medical University , Suzhou , China.,State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University , Nanjing , China
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Gholamitabar Tabari M, Jorsaraei SGA, Ghasemzadeh-Hasankolaei M, Ahmadi AA, Amirikia M. Evaluation of Novel Mouse-Specific Germ Cell Gene Expression in Embryonic Stem Cell-Derived Germ Cell-Like CellsIn Vitrowith Retinoic Acid Treatment. Cell Reprogram 2018; 20:245-255. [DOI: 10.1089/cell.2017.0057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- Maryam Gholamitabar Tabari
- Infertility and Reproductive Health Research Center, Health Research Institute, Babol University of Medical Science, Babol, Iran
| | - Seyed Gholam Ali Jorsaraei
- Infertility and Reproductive Health Research Center, Health Research Institute, Babol University of Medical Science, Babol, Iran
| | - Mohammad Ghasemzadeh-Hasankolaei
- Infertility and Reproductive Health Research Center, Health Research Institute, Babol University of Medical Science, Babol, Iran
| | - Ali Asghar Ahmadi
- Infertility and Reproductive Health Research Center, Health Research Institute, Babol University of Medical Science, Babol, Iran
| | - Mehdi Amirikia
- Infertility and Reproductive Health Research Center, Health Research Institute, Babol University of Medical Science, Babol, Iran
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Shen C, Li M, Zhang P, Guo Y, Zhang H, Zheng B, Teng H, Zhou T, Guo X, Huo R. A Comparative Proteome Profile of Female Mouse Gonads Suggests a Tight Link between the Electron Transport Chain and Meiosis Initiation. Mol Cell Proteomics 2017; 17:31-42. [PMID: 29158290 DOI: 10.1074/mcp.m117.066993] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 08/24/2017] [Indexed: 01/23/2023] Open
Abstract
Generation of haploid gametes by meiosis is a unique property of germ cells and is critical for sexual reproduction. Leaving mitosis and entering meiosis is a key step in germ cell development. Several inducers or intrinsic genes are known to be important for meiotic initiation, but the regulation of meiotic initiation, especially at the protein level, is still not well understood. We constructed a comparative proteome profile of female mouse fetal gonads at specific time points (11.5, 12.5, and 13.5 days post coitum), spanning a critical window for initiation of meiosis in female germ cells. We identified 3666 proteins, of which 473 were differentially expressed. Further bioinformatics analysis showed that these differentially expressed proteins were enriched in the mitochondria, especially in the electron transport chain and, notably, 9 proteins in electron transport chain Complex I were differentially expressed. We disrupted the mitochondrial electron transport chain function by adding the complex I inhibitor, rotenone to 11.5 days post coitum female gonads cultured in vitro. This treatment resulted in a decreased proportion of meiotic germ cells, as assessed by staining for histone γH2AX. Rotenone treatment also caused decreased ATP levels, increased reactive oxygen species levels and failure of the germ cells to undergo premeiotic DNA replication. These effects were partially rescued by adding Coenzyme Q10. Taken together, our results suggested that a functional electron transport chain is important for meiosis initiation. Our characterization of the quantitative proteome of female gonads provides an inventory of proteins, useful for understanding the mechanisms of meiosis initiation and female fertility.
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Affiliation(s)
- Cong Shen
- From the ‡State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, 211166, P.R. China.,§Center for Reproduction and Genetics, Suzhou Municipal Hospital, Nanjing Medical University Affiliated Suzhou Hospital, Suzhou 215002, P.R. China
| | - Mingrui Li
- From the ‡State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, 211166, P.R. China
| | - Pan Zhang
- From the ‡State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, 211166, P.R. China
| | - Yueshuai Guo
- From the ‡State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, 211166, P.R. China
| | - Hao Zhang
- From the ‡State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, 211166, P.R. China
| | - Bo Zheng
- From the ‡State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, 211166, P.R. China.,§Center for Reproduction and Genetics, Suzhou Municipal Hospital, Nanjing Medical University Affiliated Suzhou Hospital, Suzhou 215002, P.R. China
| | - Hui Teng
- From the ‡State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, 211166, P.R. China
| | - Tao Zhou
- From the ‡State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, 211166, P.R. China
| | - Xuejiang Guo
- From the ‡State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, 211166, P.R. China;
| | - Ran Huo
- From the ‡State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, 211166, P.R. China;
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Abstract
Gonocytes (or prospermatogonia) are the precursors to spermatogonial stem cells (SSCs), which provide the foundation for spermatogenesis through their ability to both self-renew and generate daughter cells. Despite their relative importance, the regulatory mechanisms that govern gonocyte maintenance and transition to SSCs are poorly understood. Recently, we reported that constitutive activation of NOTCH1 signaling in Sertoli cells causes gonocyte exit from quiescence--the first suggestion of the potential role of this signaling pathway in the testis. This Extra View will review what is known about NOTCH signaling, particularly in Sertoli cells and germ cells in the testes, by providing a background on germ cell biology and a summary of our recently published data on NOTCH1 signaling in Sertoli cells. We also describe additional data showing that aberrant proliferation and differentiation of gonocytes in response to constitutive activation of NOTCH1 signaling in Sertoli cells involves de novo expression of cell cycle proteins and a marked upregulation of the KIT receptor. These data further suggest that NOTCH signaling orchestrates a dynamic balance between maintenance and differentiation of gonocytes in the perinatal testis.
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Affiliation(s)
- Thomas Xavier Garcia
- Department of Endocrine Neoplasia and Hormonal Disorders, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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