迪内因轴突体重链10缺乏导致人类和小鼠的初级纤维动力障碍
Rongchun Wang1,2,3, Danhui Yang1,2,3, Chaofeng Tu4,5
1Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital of Central South University, Changsha, 410011, China.
Frontiers of medicine
|June 14, 2023
概括
DNAH10中的遗传变异会导致一次性纤维动力障碍 (PCD),一种运动性纤维病变. 这项研究在人类患者中发现了一种新的DNAH10突变,并使用小鼠模型验证了它在PCD中的作用.
科学领域:
- 遗传学 是一个遗传学.
- 细胞生物学 细胞生物学
- 医学研究 医学研究
背景情况:
- 原发性状动力障碍 (PCD) 是一种影响动的遗传疾病,已知遗传原因仅占病例的70%.
- 氨酸轴膜重链10 (DNAH10) 对于运动和精子鞭毛的功能至关重要.
研究的目的:
- 调查DNAH10变异在引起初级状动力障碍中的作用.
- 为了识别PCD的新型遗传原因,超出目前已知的基因.
主要方法:
- 外体序列测序用于识别PCD患者的DNAH10变异.
- 免疫覆盖和传输电子显微镜用于分析状结构和蛋白质定位.
- 开发和分析Dnah10-Knockin和Knockout小鼠模型.
主要成果:
- 在PCD患者中发现了一种具有特征症状的新型同卵性DNAH10变体 (c.589C > T,p.R197W).
- 在患者的乳毛中观察到DNAH10和DNALI1的缺失,轴突结构的乱,以及内侧肌缺陷.
- 鼠标模型表现出PCD表型,包括呼吸道感染,男性不孕症和水头,证实了DNAH10的作用.
结论:
- 由于衰退性突变而导致的DNAH10缺乏是新发现的原发性纤维动力障碍的原因.
- 这项研究确立了DNAH10作为PCD在人类和动物模型中的致病基因.
- 这些发现扩大了PCD的遗传景观,并提供了新的诊断目标.
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