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EFTUD2通过调节caspase-3和aifm1剪接通路来调节皮层形态发生

Liping Chen¹, Ying Li¹, Yan Yu¹

¹Department of Neurobiology, Beijing Institute of Basic Medical Sciences, Beijing, 100850, China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|May 31, 2025

概括

延长因子Tu GTP结合域含有2 (EFTUD2) 通过控制细胞死亡来调节大脑发育. 它的功能障碍会通过改变的拼接导致带有小头症的口腔面部缩症 (Mandibulofacial Dysostosis with Microcephaly,MFDM),导致神经发育问题.

科学领域:

神经科学是一个神经科学.
分子生物学分子生物学
遗传学遗传学是一个

背景情况:

延长因子Tu GTP结合域含有2 (EFTUD2) 是一种与小头症 (MFDM) 带有口腔面部静止症 (Mandibulofacial Dysostosis) 相关的结合体GTP酶.
EFTUD2在大脑发育和MFDM病变发生过程中的确切作用尚不清楚.

研究的目的:

研究EFTUD2在大脑发育中的功能.
阐明EFTUD2在MFDM等神经发育障碍中的作用背后的分子机制.

主要方法:

产生了带有条件Eftud2剥离的小鼠模型,并将致病性人类EFTUD2变体引入神经干细胞 (NSC).
利用转录和免疫光分析来评估细胞和分子变化.
采用RNA共同免疫沉,转录组测序和拼接试验来识别分子相互作用和功能后果.

主要成果:

胚胎NSC中的Eftud2缺乏导致皮质失调和小头症.
致病性EFTUD2变种导致显著的神经元损失.
EFTUD2 缺陷通过调节 Caspase3 和 Aifm1 转录的替代拼接来激活亡途径,从而产生亲亡异型.

结论:

在皮质形成过程中,EFTUD2对于维持亡平衡至关重要.
由EFTUD2进行的缺陷拼接调节是MFDM的分子基础.
研究结果为诊断和治疗与EFTUD2功能障碍相关的神经发育障碍提供了洞察力.

关键词:

如果m1 Aifm1 在EFTUD2中,替代性拼接是一种替代性的拼接.皮层形态发生的皮层形态发生.曼迪布洛面部静止症-微头症综合征

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