在CFAP58的一个新型突变导致MMAF在人类和小鼠中通过破坏CP组装导致MMAF在人类和小鼠
Tanveer Abbas1, Huan Zhang1, Hao Yin1
1Division of Reproduction and Genetics, First Affiliated Hospital of University of Science and Technology of China (USTC), Hefei National Research Center for Physical Sciences at the Microscale, School of Basic Medical Sciences, Biomedical Sciences and Health Laboratory of Anhui Province, Institute of Health and Medicine, Hefei Comprehensive National Science Center, Division of Life Sciences and Medicine, University of Science and Technology of China, 443 Huangshan Road, Hefei, Anhui Province 230027, China.
在CFAP58基因中发生的一种新奇突变,通过破坏精子鞭毛组合,导致男性不育. 这一发现突出了CFAP58的重点.
科学领域:
- 生殖生物学 生殖生物学
- 人类遗传学 人类遗传学
- 精子动物 形态 形态学
背景情况:
- 精子旗多重形态异常 (MMAF) 是男性不孕症的一个严重原因.
- 精子鞭毛组合依赖于特定的鞭毛相关蛋白质.
- 目前尚不完全了解MMAF的遗传基础.
研究的目的:
- 在两个巴基斯坦家庭中确定MMAF的遗传原因.
- 研究CFAP58基因在精子鞭毛形成中的作用.
- 用小鼠模型验证新型CFAP58突变的致病性.
主要方法:
- 基因测序以确定受影响家族中的突变.
- 开发和分析Cfap58突变小鼠模型.
- 传输电子显微镜 (TEM) 检查精子鞭状超结构.
主要成果:
- 在患有MMAF的患者中发现了一种同卵性CFAP58突变 (c.562C>T,p.R188*).
- Cfap58突变小鼠表现出不孕症和MMAF表型,反映了人类患者的情况.
- 在突变者的精子鞭状体中,TEM揭示了中心对微管的缺失,这表明轴突组合被破坏了.
结论:
- 鉴定到的CFAP58突变是致病性的,它通过破坏精子轴突中枢对组合而导致MMAF.
- CFAP58在精子鞭子形成中起着至关重要的作用.
- CFAP58可以成为诊断MMAF和男性不孕症的潜在遗传标记.
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