The I510V mutation in KLHL10 in a patient with oligoasthenoteratozoospermia.

The I510V mutation in KLHL10 in a patient with oligoasthenoteratozoospermia.
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少弱畸形精子症患者KLHL10基因I510V突变

DOI:
10.1262/jrd.2021-063
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发表时间:
2021-10-29
期刊:
The Journal of reproduction and development
影响因子:
--
通讯作者:
Chen Z
Chen Z
中科院分区:
其他
文献类型:
--
作者:
Huang Z;Chen F;Xie M;Zhang H;Zhuang Y;Huang C;Li X;Liu H;Chen Z

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少弱无畸形精子症是一种由精子发生、精子发生和精子成熟缺陷引起的人类不育综合征,其病因尚不清楚。Kelch-like 10 (KLHL10)是泛素连接酶E3 - 10 (KLHL10)的一个组成部分,在男性生育中起重要作用。果蝇或小鼠Klhl10基因的缺失或突变会导致精子发生或精子成熟的缺陷。然而,KLHL10发挥作用的分子机制尚不清楚。在本研究中,我们在KLHL10的第5外显子中发现了一个错义突变(c.1528A→G, p.I510V),该突变与人类少弱异卵精子症有关。为了研究该突变对KLHL10功能和精子发生的影响,我们使用聚集规则间隔回文重复/caspase 9 (CRISPR/Cas9)系统生成了复制氨基酸转换的突变小鼠,并将其命名为Klhl10I510V小鼠。然而,在10周龄时,Klhl10I510V小鼠在睾丸发育、精子发生或精子活力方面没有表现出任何缺陷,这表明这种突变不会破坏KLHL10的功能,并且可能不会导致患有少弱异卵精子症的受影响个体的男性不育。
Oligoasthenoteratozoospermia is a human infertility syndrome caused by defects in spermatogenesis, spermiogenesis, and sperm maturation, and its etiology remains unclear. Kelch-like 10 (KLHL10) is a component of ubiquitin ligase E3 10 (KLHL10) and plays an important role in male fertility. Deletion or mutation of the Klhl10 gene in Drosophila or mice results in defects in spermatogenesis or sperm maturation. However, the molecular mechanisms by which KLHL10 functions remain elusive. In this study, we identified a missense mutation (c.1528A→G, p.I510V) in exon 5 of KLHL10, which is associated with oligoasthenoteratozoospermia in humans. To investigate the effects of this mutation on KLHL10 function and spermatogenesis and/or spermiogenesis, we generated mutant mice duplicating the amino acid conversion using the clustered regularly interspaced palindromic repeat/caspase 9 (CRISPR/Cas9) system and designated them Klhl10I510V mice. However, the Klhl10I510V mice did not exhibit any defects in testis development, spermatogenesis, or sperm motility at ten-weeks-of-age, suggesting that this mutation does not disrupt the KLHL10 function, and may not be the cause of male infertility in the affected individual with oligoasthenoteratozoospermia.
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