Overexpression of TAF4B Promoted the Proliferation of Undifferentiated Spermatogonia in Cattleyak In Vitro.

IF 1.6 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Reproduction in Domestic Animals Pub Date : 2024-11-01 DOI:10.1111/rda.14738
Yuan Tian, Peng Zhang, Kemin Jing, Yuqian Li, Binglin Yue, Zhijuan Wu, Wenjing Dong, Jincheng Zhong, Xin Cai
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Abstract

As the hybrid between cattle and yak, cattleyak is a typical male sterile mammal, and the underlying mechanism for its spermatogenic arrest is still unclear. In this study, the coding region of cattleyak TAF4B gene was cloned by RT-PCR and analysed by bioinformatics. To investigate the effects of TAF4B on cellular proliferation and differentiation, an expression vector was generated and introduced into undifferentiated spermatogonia (UDSPG) of cattleyak. The results showed that the protein encoded by TAF4B did not contain the signal peptide sequence. The expression level of TAF4B in UDSPG of cattleyak was lower than that in yak, while the overexpression of TAF4B in cattleyak promoted the proliferation activity of cattleyak UDSPG. Meanwhile, the expression of proliferation and meiosis-related genes was increased but the differentiation-related genes were decreased. Therefore, the aberrant expression of TAF4B in cattleyak UDSPG possibly impaired its proliferation and differentiation equilibrium and decreased its growth potentiality, thereby reducing the quantity of UDSPG and affecting spermatogenesis. This study provided a potential approach for further elucidation of the mechanism of spermatogenesis arrest and provided a new idea for solving the problem of male infertility in cattleyak.

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过表达 TAF4B 可促进卡特兰体外未分化精原细胞的增殖
作为牛和牦牛的杂交种,卡特兰牦牛是一种典型的雄性不育哺乳动物,其精子发生停滞的内在机制尚不清楚。本研究通过 RT-PCR 克隆了卡特兰牦牛 TAF4B 基因的编码区,并进行了生物信息学分析。为了研究 TAF4B 对细胞增殖和分化的影响,研究人员生成了表达载体,并将其导入卡特兰克未分化精原细胞(UDSPG)。结果表明,TAF4B编码的蛋白质不含信号肽序列。TAF4B在卡特兰牦牛UDSPG中的表达水平低于牦牛,而在卡特兰牦牛中过表达TAF4B可促进卡特兰牦牛UDSPG的增殖活性。同时,增殖和减数分裂相关基因的表达量增加,而分化相关基因的表达量减少。因此,TAF4B在卡特兰UDSPG中的异常表达可能会破坏其增殖和分化平衡,降低其生长潜力,从而减少UDSPG的数量,影响精子发生。这项研究为进一步阐明精子发生受阻的机制提供了一种可能的方法,并为解决卡特兰牦牛男性不育问题提供了一种新思路。
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来源期刊
Reproduction in Domestic Animals
Reproduction in Domestic Animals 农林科学-奶制品与动物科学
CiteScore
3.00
自引率
5.90%
发文量
238
审稿时长
4-8 weeks
期刊介绍: The journal offers comprehensive information concerning physiology, pathology, and biotechnology of reproduction. Topical results are currently published in original papers, reviews, and short communications with particular attention to investigations on practicable techniques. Carefully selected reports, e. g. on embryo transfer and associated biotechnologies, gene transfer, and spermatology provide a link between basic research and clinical application. The journal applies to breeders, veterinarians, and biologists, and is also of interest in human medicine. Interdisciplinary cooperation is documented in the proceedings of the joint annual meetings. Fields of interest: Animal reproduction and biotechnology with special regard to investigations on applied and clinical research.
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