替代拼接的失调是家族性肌缩侧面硬化症中突触缺陷的基础
Veronica Verdile1, Ramona Palombo2, Gabriele Ferrante3
1Department of Movement, Human and Health Sciences, University of Rome "Foro Italico", Piazza Lauro de Bosis 6, 00135 Rome, Italy; Division of Experimental Neuroscience, IRCCS Fondazione Santa Lucia, Via del Fosso di Fiorano 64, Rome 00143, Italy.
Progress in neurobiology
|September 22, 2023
概括
突触基因的改变拼接在家族性肌缩侧面硬化症 (ALS) 运动神经元中很常见. 异常的Sam68蛋白功能有助于这些拼接变化,可能导致ALS病理.
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:
- 肌缩侧面硬化症 (ALS) 涉及运动神经元退化和异常RNA结合蛋白 (RBP) 局部化.
- 改变的替代拼接与ALS的发病有关,但它在没有RBP基因突变的家族形式中的作用尚不清楚.
研究的目的:
- 为了研究家族ALS运动神经元中改变的拼接模式.
- 为了确定参与ALS相关拼接放松调节的RNA结合蛋白 (RBPs).
- 为了阐明Sam68在ALS运动神经元功能障碍中的作用.
主要方法:
- 在家族性ALS运动神经元和hSOD1G93A MN类细胞中对替代拼接的分析.
- 在前mRNA调节器的形预测.
- 免疫光和生物化学分化研究Sam68的局部化.
- 在Sam68淘汰赛小鼠和救援实验中对拼接变化的评估.
主要成果:
- 家庭ALS运动神经元表现出突触基因的改变拼接.
- 发现Sam68会积聚在运动神经元的细胞质不溶性部分中.
- 在ALS运动神经元中观察到的拼接缺陷在Sam68淘汰赛脊髓中复制.
- 再组合的Sam68蛋白在ALS hSOD1G93A MN类细胞中挽救了拼接变化.
结论:
- 异常的Sam68功能有助于ALS中的突触基因拼接变化.
- 这些拼接变化可能在ALS特征的运动神经元表型中发挥作用.
- 这项研究将Sam68确定为ALS的潜在治疗标.
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