Lactate dehydrogenase a-like 6B is not essential for spermatogenesis and male fertility in mice

IF 2.6 3区 生物学 Q2 GENETICS & HEREDITY Gene Pub Date : 2024-11-15 DOI:10.1016/j.gene.2024.149100
Xueying Huang , Zhicheng Wu , Peng Ren , Yi Wu , Changdong Lin , Hongwen Zhu , Peng Dai
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Abstract

Lactate is recognized as a principal energy substrate for male germ cells. Lactate dehydrogenases (LDHs) catalyze the reversible conversion between pyruvate and lactate, which are required for male fertility. Among them, lactate dehydrogenase A-like 6B (Ldhal6b) has been identified as a testis-specific LDH gene. However, its precise roles in spermatogenesis remain to be elucidated. In this study, we used a Ldhal6b knockout mouse model to assess its impact on spermatogenesis. Our findings reveal that Ldhal6b knockout mice exhibit normal development and no significant alterations in male fertility. Further, LDHAL6B is localized to mitochondria and closely associated with germ granules. Nevertheless, its depletion does not result in significant abnormalities in mitochondria, germ granules or impact piRNA biogenesis. We also observed alterations in the abundance of proteins related to mitochondrial metabolism in sperm from Ldhal6b knockout mice, align with its specific localization to mitochondria. Overall, our results indicate that Ldhal6b is dispensable for both mouse development and spermatogenesis under normal laboratory conditions.
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乳酸脱氢酶 a 样 6B 不是小鼠精子发生和雄性生育能力所必需的。
乳酸被认为是男性生殖细胞的主要能量底物。乳酸脱氢酶(LDHs)催化丙酮酸和乳酸之间的可逆转换,这是男性生育所必需的。其中,乳酸脱氢酶 A 样 6B(Ldhal6b)已被确定为睾丸特异性 LDH 基因。然而,它在精子发生过程中的确切作用仍有待阐明。在本研究中,我们利用 Ldhal6b 基因敲除小鼠模型来评估其对精子发生的影响。我们的研究结果表明,Ldhal6b基因敲除小鼠的发育正常,雄性生育能力没有明显改变。此外,LDHAL6B 定位于线粒体,与生殖颗粒密切相关。尽管如此,LDHAL6B 的缺失并不会导致线粒体、生殖颗粒出现明显异常,也不会影响 piRNA 的生物发生。我们还观察到,在 Ldhal6b 基因敲除小鼠的精子中,与线粒体代谢相关的蛋白质丰度发生了变化,这与 Ldhal6b 在线粒体中的特异性定位一致。总之,我们的研究结果表明,在正常实验室条件下,Ldhal6b 对小鼠的发育和精子发生都是不可或缺的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Gene
Gene 生物-遗传学
CiteScore
6.10
自引率
2.90%
发文量
718
审稿时长
42 days
期刊介绍: Gene publishes papers that focus on the regulation, expression, function and evolution of genes in all biological contexts, including all prokaryotic and eukaryotic organisms, as well as viruses.
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