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通过PI3K/AKT信号传递,通过c-Myc中介应力诱导的粉样蛋白形成

Emma Lacroix¹, Evgenia A Momchilova¹, Sahil Chandhok¹

¹Department of Molecular Biology and Biochemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada; Centre for Cell Biology, Development, and Disease, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada.

|April 24, 2025

概括

细胞在压力下形成保护性粉样体 (A体). PI3K/AKT通路通过稳定c-Myc来调节A体的形成,这是播种这些无毒聚合物的关键因素.

科学领域:

细胞生物学细胞生物学
分子生物学分子生物学
生物化学生物化学

背景情况:

细胞在应对环境压力时形成功能性粉样蛋白聚合物,称为粉样蛋白体 (A体).
A体是无毒的,类似固体的生物分子凝聚物,可诱导细胞休眠.
A体生物发生的调节因素在很大程度上没有被描述,播种非编码RNA是唯一已知的调节者.

研究的目的:

确定调节功能性粉体体 (A体) 生物发生的新途径.
研究信号通路在压力诱导的A体形成中的作用.
阐明控制生理性粉样聚合物的核形成的分子机制.

主要方法:

利用基于图像的高通量选方法来识别A体形成的调节者.
研究了酸丁醇3-激酶 (PI3K) /AKT信号通路在A体生物发生过程中的作用.
分析了AKT,糖原合成酶激酶-3 (GSK3),c-Myc和播种非编码RNA之间的相互作用.

主要成果:

酸丁3-酶 (PI3K) /AKT信号轴被确定为压力期间A体形成的关键媒介.
发现AKT激活可以抑制GSK3介导的c-Myc.降解.
增强的c-Myc水平增加了与播种非编码RNA的结合,从而调节了A体核化所需的转录.

结论:

PI3K/AKT信号通路,c-Myc和生理性粉样蛋白聚合物是相互连接的.
这项研究扩展了PI3K/AKT信号传递和c-Myc.已知的功能.
了解这些调节元件可以了解细胞机制,当调节失调时,可能会导致粉样蛋白原性疾病.

关键词:

标签: 活动活动活动 CP: 细胞生物学细胞生物学科普:神经科学是什么意思在PI3K中,PI3K是指PI3K.粉样蛋白是什么粉样蛋白生物分子凝聚剂是生物分子的凝聚物.c-Myccc 的意思是我的环境压力环境压力热冲击是一种热冲击.没有编码的RNA.核的核心是核的核.信号传导的信号传导.

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