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Xia X, Zhou X, Quan Y, Hu Y, Xing F, Li Z, Xu B, Xu C, Zhang A. Germline deletion of Cdyl causes teratozoospermia and progressive infertility in male mice. Cell Death Dis 2019; 10:229. [PMID: 30850578 PMCID: PMC6408431 DOI: 10.1038/s41419-019-1455-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 01/25/2019] [Accepted: 02/01/2019] [Indexed: 12/02/2022]
Abstract
Chromodomain Y (CDY) is one of the candidate genes for male dyszoospermia related to Y chromosome microdeletion (YCM). However, the function of CDY in regulating spermatogenesis has not been completely determined. The mouse Cdyl (CDY-like) gene is the homolog of human CDY. In the present study, we generated a germline conditional knockout (cKO) model of mouse Cdyl. Significantly, the CdylcKO male mice suffered from the defects in spermatogonia maintenance and spermatozoon morphogenesis, demonstrating teratozoospermia and a progressive infertility phenotype in early adulthood. Importantly, patterns of specific histone methylation and acetylation were extensively changed, which disturbed the transcriptome in CdylcKO testis. Our findings indicated that Cdyl is crucial for spermatogenesis and male fertility, which provides novel insights into the function of CDY gene, as well as the pathogenesis of YCM-related reproductive failure.
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Affiliation(s)
- Xiaoyu Xia
- Department of Histo-Embryology, Genetics and Developmental Biology, Shanghai Jiao Tong University, School of Medicine; Shanghai Key Laboratory of Reproductive Medicine, 280 South Chongqing Road, Shanghai, 200025, China
| | - Xiaowei Zhou
- Reproductive Medical Center of Ruijin Hospital, Shanghai Jiao Tong University, School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, China
| | - Yanmei Quan
- Department of Histo-Embryology, Genetics and Developmental Biology, Shanghai Jiao Tong University, School of Medicine; Shanghai Key Laboratory of Reproductive Medicine, 280 South Chongqing Road, Shanghai, 200025, China
| | - Yanqin Hu
- Department of Histo-Embryology, Genetics and Developmental Biology, Shanghai Jiao Tong University, School of Medicine; Shanghai Key Laboratory of Reproductive Medicine, 280 South Chongqing Road, Shanghai, 200025, China
| | - Fengying Xing
- Department of Laboratory Animal Science, Shanghai Jiao Tong University, School of Medicine, 280 South Chongqing Road, Shanghai, 200025, China
| | - Zhengzheng Li
- Department of Histo-Embryology, Genetics and Developmental Biology, Shanghai Jiao Tong University, School of Medicine; Shanghai Key Laboratory of Reproductive Medicine, 280 South Chongqing Road, Shanghai, 200025, China
| | - Bufang Xu
- Reproductive Medical Center of Ruijin Hospital, Shanghai Jiao Tong University, School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, China.
| | - Chen Xu
- Department of Histo-Embryology, Genetics and Developmental Biology, Shanghai Jiao Tong University, School of Medicine; Shanghai Key Laboratory of Reproductive Medicine, 280 South Chongqing Road, Shanghai, 200025, China.
| | - Aijun Zhang
- Department of Histo-Embryology, Genetics and Developmental Biology, Shanghai Jiao Tong University, School of Medicine; Shanghai Key Laboratory of Reproductive Medicine, 280 South Chongqing Road, Shanghai, 200025, China. .,Reproductive Medical Center of Ruijin Hospital, Shanghai Jiao Tong University, School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, China.
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Systemic microcirculation dysfunction after low thoracic spinal cord injury in mice. Life Sci 2019; 221:47-55. [PMID: 30738044 DOI: 10.1016/j.lfs.2019.02.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 01/26/2019] [Accepted: 02/03/2019] [Indexed: 11/23/2022]
Abstract
BACKGROUND Spinal cord injury (SCI) disturbs the autonomic nervous system and induces dysfunction or failure of multiple organs. The systemic microcirculation disturbance that contributes to the complications associated with SCI remains to be clarified. METHODS We used male mice (29-32 g) and modified weight-drop injury at T10 to evaluate the systemic microcirculation dysfunction during the first 2 weeks after SCI. We determined permeability and microvascular blood flow in several organs and evaluated their vasomotor function. We also measured circulating endothelial cells (CECs), circulating endothelial progenitor cells (CEPCs), circulating pericyte progenitor cells (CPPCs), and serum proinflammatory cytokines. RESULTS The endothelial permeability of almost all organs increased after SCI. Microvascular blood flow decreased in the bladder and kidney and increased in the spleen and was accompanied by endothelial vasomotor dysfunction. SCI also induced an increase in CECs, CEPCs, and CPPCs in peripheral blood. Finally, we confirmed changes in a systemic cytokine profile (interleukin [IL]-3, IL-6, IL-10, IL-13, granulocyte colony-stimulating factor, and regulated on activation normal T cell expressed and secreted) after SCI. CONCLUSIONS These data indicate that a systemic microcirculation disturbance occurs after SCI. This information may play a key role in the development of effective therapeutic strategies for SCI.
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The larvicide pyriproxyfen blamed during the Zika virus outbreak does not cause microcephaly in zebrafish embryos. Sci Rep 2017; 7:40067. [PMID: 28051181 PMCID: PMC5209666 DOI: 10.1038/srep40067] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 11/30/2016] [Indexed: 02/04/2023] Open
Abstract
Although the zika virus (ZIKV) has now been strongly correlated with emerging cases of microcephaly in the Americas, suspicions have been raised regarding the use of pyriproxyfen, a larvicide that prevents mosquito development, in drinking water. The effects of this compound on neurodevelopment have not yet been addressed specifically in vertebrates. As a result, we aimed at addressing the effects, if any, of pyriproxyfen on neurodevelopment in the zebrafish embryo as a vertebrate model. Using zebrafish transgenic lines expressing GFP in different cell populations (elavl3 in newborn neurons, gfap and nestin in neural stem cells), we focused on the analysis of whole embryonic brain volume after confocal 3D-reconstruction and the quantification of purified neural stem cells during early neurodevelopment by FACS-cell sorting from whole in vivo embryos. Interestingly, though lethal at very high doses, pyriproxyfen did not cause brain malformation nor any significant changes in the number of observed stem cells in the developing central nervous system. Our data indicate that pyriproxyfen does not affect central nervous system development in zebrafish, suggesting that this larvicide on its own, may not be correlated with the increase in microcephaly cases reported recently.
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