在患有 de novo POGZ 突变的患者中,先天性性性性
Nazli Eskici1,2, Shrinidhi Madhusudan1,2, Kirsi Vaaralahti1,2
1Stem Cells and Metabolism Research Program (STEMM), Faculty of Medicine, University of Helsinki, Helsinki 00014, Finland.
European journal of endocrinology
|August 24, 2023
概括
POGZ基因的突变与怀特-萨顿综合征和与卡尔曼综合征 (KS) 相结合的先天性性性性 (CHH) 有关. POGZ突变会影响神经前体细胞,影响GnRH神经元的发育,并导致CHH/KS.
科学领域:
- 遗传学和发育生物学
- 神经内分泌学神经内分泌学
- 生殖医学 生殖医学
背景情况:
- 先天性性性性性 (CHH) 是由于GnRH缺乏而导致的罕见生殖障碍.
- 卡尔曼综合征 (KS),其特点是CHH和厌氧,影响大约一半的CHH患者.
- 怀特-萨顿综合征涉及发育迟缓和自闭症谱系障碍.
研究的目的:
- 研究POGZ基因突变在怀特-萨顿综合征,卡尔曼综合征和CHH患者中的作用.
- 模拟POGZ突变对人类多能干细胞分化成GnRH神经元的影响.
主要方法:
- 产生了CRISPR/Cas9编辑的人类多能干细胞系,具有异性和同性POGZ突变.
- 将分化干细胞转化为GnRH神经元,以评估祖细胞行为和神经元发育.
- 分析了发育中的神经元的增殖,迁移,基因表达和神经元外生.
主要成果:
- 同胞性POGZ突变导致神经前中严重的增殖缺陷和延迟的伤口愈合.
- 观察到关键神经元前体和不成熟神经元标记物的下调.
- 在同卵性突变系中,产生了较少的GnRH神经元,神经元较短,分支较少.
结论:
- 这项研究报告了怀特-萨顿综合征和CHH之间的首次重叠.
- POGZ突变不会阻止GnRH神经元的形成,但会损害前神经原始体池的大小和运动性.
- 这些与POGZ相关的原生细胞缺陷和神经元外生可能有助于CHH/KS的发病.
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