在PNLDC1中出现了一种新的误解变异,与非阻塞性亚精子症相关
Mouness Rahimian1, Masomeh Askari, Najmeh Salehi
1Department of Genetics, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran. m.totonchi@royaninstitute.org.
Journal of genetics
|September 3, 2024
概括
一种新的PNLDC1基因变异被确定为非阻性精子缺血症 (NOA) 的原因,这是一种严重的男性不孕症状况. 这一发现有助于对特异性NOA病例进行遗传诊断和咨询.
科学领域:
- 遗传学 遗传学 是一个
- 生殖生物学 生殖生物学
- 人类遗传学 人类遗传学
背景情况:
- 非阻塞性精症 (NOA) 是男性不孕症的最严重形式,约影响1%的男性.
- 虽然已知许多NOA基因,但许多病例仍然是特异性病,这表明尚未发现的遗传因素.
- 单一基因突变涉及到一组异常性NOA病例的子集,需要进一步进行遗传研究.
研究的目的:
- 在血缘亲属家庭中识别导致异形非阻断性精症 (NOA) 的遗传变异.
- 为了促进未来的临床遗传诊断和NOA的治疗策略.
- 了解由已识别的遗传变异引起的NOA背后的分子机制.
主要方法:
- 基于家族的外基因组测序被用来分析一个血缘家族的血统,其中有三个NOA患者.
- 生物信息学分析,桑格测序,in silico分析,单细胞RNA测序数据和蛋白质建模被利用.
- 鉴定的变异被分析为其对蛋白质结构和功能的潜在影响.
主要成果:
- 在NOA患者的同卵性状态下,在PNLDC1基因中发现了一种罕见的新型误解变异 (c.710G>A;p.Gly237Asp).
- 在和蛋白质建模中,该变体存在于保存的CAF1域中,可能导致局部结构不稳定性和改变酸化位.
- 建议PNLDC1 Gly237Asp变种作为NOA在这个家族的遗传原因.
结论:
- 新的误解PNLDC1变种被强烈认为是研究家族中非阻塞性精症 (NOA) 的原因.
- 这一发现有助于了解异常性NOA的遗传基础,并有助于遗传咨询.
- 这些结果有可能改善对具有相似遗传基础的NOA病例的临床诊断.
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