拉伸激活离子通道TMEM63B与发育性和性脑病变以及渐进性神经退行症有关
Annalisa Vetro1, Cristiana Pelorosso1, Simona Balestrini2
1Neuroscience Department, Meyer Children's Hospital IRCCS, Florence, Italy.
American journal of human genetics
|July 8, 2023
概括
在TMEM63B基因的突变导致严重的早期发作的神经退行性脑疾病和. 这些遗传变化破坏了离子通道功能,导致受影响个体的神经和血液异常.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
- 细胞生物学 细胞生物学
背景情况:
- 拉伸激活的离子通道对于细胞对机械和透应激反应至关重要.
- 这些通道在人类疾病中的作用尚不清楚.
- TMEM63B编码了一个保留的拉伸激活离子通道.
研究的目的:
- 为了研究一种严重的早期神经发育障碍的遗传基础.
- 在受影响个体中描述TMEM63B变异的功能后果.
- 建立TMEM63B相关疾病作为一个独特的临床病理学实体.
主要方法:
- 17名患有严重发育性和性脑病变 (DEE) 的非相关个体的基因测序.
- 对新型变种发生率和变种类型 (误解,内框) 的分析.
- 在转染细胞和多索菲拉模型中对TMEM63B变异的功能性表征.
主要成果:
- 在17名患有DEE,智力障碍和视觉/运动障碍的个体中发现了10种不同的异合体TMEM63B变体.
- 在大多数情况下,变种出现了de novo,并且影响了保存的跨膜残留物.
- 突变的通道表现出改变的离子导电性,受损的低透反应和细胞功能障碍.
- 在大多数受影响的个体中观察到血液学异常,包括巨细胞和血液溶解.
结论:
- TMEM63B变种导致严重的,进展性神经退行性脑疾病与早期发作的.
- 改变的离子通道功能是观察到的神经和血液现象的基础.
- 与TMEM63B相关的DEE是一种可识别的遗传疾病,具有重大临床影响.
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