在RING手指蛋白213中,de novo变异会导致全身血管病变
Ayako Kashimada1, Tomoko Mizuno1, Eriko Tanaka2
1Department of Pediatrics and Developmental Biology, Institute of Science Tokyo, Tokyo, Japan.
JCI insight
|June 9, 2025
概括
新的研究确定了与罕见的全身动脉狭窄症,莫亚莫亚病 (MMD) 和中主动脉综合征 (MAS) 相关的RNF213变体. 鼠标模型显示,这些变异影响肺部发育和免疫反应,这表明RNF213.3具有更广泛的作用.
科学领域:
- 遗传学 遗传学 是一个
- 血管生物学 血管生物学
- 免疫学 免疫学 免疫学
背景情况:
- 系统性动脉狭窄,包括莫亚莫亚病 (MMD) 和中动脉综合征 (MAS),是罕见的疾病,原因不明.
- 虽然存在与MAS的遗传联系,但确切的病因仍然难以捉摸.
- RNF213基因变异已与MMD有关,但它们在其他系统性血管病变中的作用不太清楚.
研究的目的:
- 在MMD和MAS患者中研究RING手指蛋白213 (RNF213) 中新异构错误变异的作用.
- 使用小鼠模型阐明已识别的RNF213变异的功能意义.
主要方法:
- 在两个同时出现MMD和MAS的家族中进行了整体外组测序.
- 携带Rnf213 p.His4058Pro变异的诺金小鼠被生成,以研究其在生物体内的影响.
- 对同卵性诺金小鼠肺部发育,免疫反应和细胞增殖的分析.
主要成果:
- 在RNF213中,在MAS和MMD患者中发现了De novo异构性误解变异 (p.His4058Pro和p.Thr4155Pro).
- 同卵性Rnf213 p.His4058Pro敲击小鼠由于呼吸衰竭和肺部发育不良而表现出围产死亡率.
- 小鼠肺部张症的特征是先天免疫力和炎症的升级,以及细胞增殖的减少.
结论:
- 这项研究提供了RNF213 p.His4058Pro变体在全身血管病变中的致病作用的证据.
- RNF213变种与MAS和MMD的遗传基础有关.
- 这些发现揭示了RNF213功能,肺部发育和免疫调节之间的意想不到的联系,突出了RNF213在不同组织和物种中的复杂性.
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