整体外体序列测定揭示了SUN5基因的新奇突变,该基因会导致阿克法力精子症候群
Seyedeh-Hanieh Hosseini1, Nastaran Salehisedeh2, Mahsa Allahgholi1
1Department of Andrology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran.
Reproduction, fertility, and development
|September 22, 2025
概括
一种新的SUN5基因突变导致脑细胞精子综合征 (ASS),这是一个严重的男性不孕症疾病. 这一发现有助于诊断ASS并了解其遗传基础,以改善患者咨询.
科学领域:
- 生殖生物学 生殖生物学
- 人类遗传学 人类遗传学
- 分子生物学分子生物学
背景情况:
- 脑细胞精子综合征 (Acephalic spermatozoa syndrome,简称ASS) 是一种严重的男性不孕症,其特征是没有头的精子.
- 遗传因素与精子生成有关,但导致ASS的基因在很大程度上是未知的.
- 鉴定新基因对于ASS患者的有效治疗和遗传咨询至关重要.
研究的目的:
- 在来自血缘亲属家庭的两个不育的兄弟中确定ASS的遗传原因.
- 调查SUN5基因在与ASS相关的男性不孕症中的作用.
主要方法:
- 在受影响个体的基因组DNA上进行了全外体序列 (WES) 测序.
- 聚合酶连锁反应 (PCR) 和桑格测序证实了发现的突变.
- 免疫细胞化学评估了精子中的SUN5蛋白表达.
主要成果:
- 在SUN5基因中发现并证实了一种新的同卵性突变 (c.879dupC).
- 在受影响个体的精子中没有检测到SUN5蛋白信号.
- 使用患者的精子的细胞内注射 (ICSI) 周期是不成功的.
结论:
- 鉴定的SUN5基因突变是这种家族中Acephalic精子群综合征的可能原因.
- 这一发现强调了ASS中SUN5突变的诊断意义.
- 这项研究提高了对ASS遗传基础的理解,为未来的临床管理提供了信息.
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