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在一个非阻塞性亚精细菌患者中,在Chibby家族成员2中发现了一种新突变

Guohui Zhang¹, Fei Ye², Yihong Yang³

¹Key Laboratory of Reproductive Medicine, Sichuan Provincial Maternity and Child Health Care Hospital, Chengdu 610045, China; Reproductive Medicine Center, Sichuan Provincial Maternity and Child Health Care Hospital, Chengdu 610045, China.

Reproductive biology

|May 11, 2024

概括

在CBY2基因中的一种新型遗传变异通过破坏精子生成导致男性不育. 这一发现确定了非阻塞性亚精子症的新原因,并提供了对男性生殖健康的见解.

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:

精子精子缺失,即射精中缺少精子,影响15%的不育男性,有些病例缺乏已知的遗传原因.
奇比家族成员2 (CBY2) 在丸中高度表达,这表明它在精子生成中发挥了作用.

研究的目的:

为了确定新的遗传因素,有助于在不育的家庭中阿佐精子症.
为了研究新发现的CBY2变异对精子生成的功能影响.

主要方法:

整个外体序列测序 (WES) 在一个不育的家庭中进行.
功能性研究包括体内和体外蛋白质表达分析,LC-MS/MS,共免疫沉和免疫光染色.

主要成果:

在一个患有非阻塞性亚精子症的患者中,发现了CBY2的同卵性c.355C>A变异.
这种变体显著降低了CBY2蛋白表达,并在早期圆精子阶段中破坏了精子生成,导致延长和延长的精子流失.
CBY2与PIWIL1相互作用,在患者的丸组织中观察到PIWIL1的表达减少.

结论:

鉴定到的CBY2变体损害了CBY2的功能,导致缺陷的精子生成和亚精.
CBY2在圆形精子生成阶段起着至关重要的作用,并与男性不孕症的发病有关.

关键词:

亚精子缺血症 (Azoospermia) 是一种 CBY2 CBY2 的意思是皮威尔1 皮威尔1 精子发生是精子生成.在WES WES中,您可以使用WES.

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