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TMEM16F调节病理性α-synuclein分泌和在帕金森病的细胞和小鼠模型中的传播

Stav Cohen-Adiv¹, Fatima Amer-Sarsour¹, Yevgeny Berdichevsky¹

¹The Department of Cell and Developmental Biology, Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv, Israel.

|November 2, 2024

概括

该研究发现,TMEM16F蛋白促进了帕金森病 (PD) 中的α-syn (α-syn) 病理的传播. 切除TMEM16F在细胞和小鼠模型中减少了α-syn的传播,这表明它是治疗点.

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
遗传学是一个遗传学.

背景情况:

帕金森病 (PD) 病理包括聚合的α-synuclein (α-syn) 的传播,它可以以"类似于prion"的方式传播.
像TMEM16家族一样,等离子体膜蛋白在α-syn病理中的作用尚未完全理解.
TMEM16F是一种脂质杂酶和离子通道,在各种疾病中起作用,但其在神经退行性疾病中的参与程度较少.

研究的目的:

研究TMEM16F在α-syn.病理传播中的作用.
为了确定TMEM16F是否影响α-syn细胞外分泌和传播.
探索TMEM16F作为同核蛋白病变的潜在治疗点.

主要方法:

利用TMEM16F淘汰赛小鼠生成神经元,用于研究α-synA53T传播.
在α-syn传输试验中使用报告员系统来区分供体和受体神经元.
在PD的小鼠模型中验证了这些发现,并在患者遗传数据中分析了TMEM16F.

主要成果:

减少了来自TMEM16F淘汰赛小鼠的神经元中的病理性α-synA53T的传播.
在帕金森病的小鼠模型中,TMEM16F减弱的α-synA53T扩散的消去.
在阿什肯纳兹犹太PD患者中鉴定了一种TMEM16F突变 (Ala703Ser),该突变具有增强的活性,与改变的α-syn分泌有关.

结论:

TMEM16F是帕金森病中α-syn传播的新型调节剂.
TMEM16F在α-syn细胞外分泌中的作用使其成为潜在的治疗点.
准TMEM16F可能为治疗同核蛋白病变提供了一个新的策略.

关键词:

聚合易发生的蛋白质.与衰老相关的疾病.细胞外分泌的细胞外分泌物脂质转移的情况蛋白质稳定性蛋白质稳定性

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