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MAL 的核心和保守作用是肌动蛋白水平的动态平衡调节。

The core and conserved role of MAL is homeostatic regulation of actin levels.

机构信息

Institute of Molecular and Cell Biology, Singapore 138673, Singapore.

出版信息

Genes Dev. 2014 May 15;28(10):1048-53. doi: 10.1101/gad.237743.114.

DOI:10.1101/gad.237743.114
PMID:24831700
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4035534/
Abstract

The transcription cofactor MAL is regulated by free actin levels and thus by actin dynamics. MAL, together with its DNA-binding partner, SRF, is required for invasive cell migration and in experimental metastasis. Although MAL/SRF has many targets, we provide genetic evidence in both Drosophila and human cellular models that actin is the key target that must be regulated by MAL/SRF for invasive cell migration. By regulating MAL/SRF activity, actin protein feeds back on production of actin mRNA to ensure sufficient supply of actin. This constitutes a dedicated homeostatic feedback system that provides a foundation for cellular actin dynamics.

摘要

转录共激活因子 MAL 受游离肌动蛋白水平的调节,进而受肌动蛋白动力学的调节。MAL 与它的 DNA 结合伙伴 SRF 一起,是侵袭性细胞迁移所必需的,并且在实验性转移中也是必需的。尽管 MAL/SRF 有许多靶标,但我们在果蝇和人类细胞模型中都提供了遗传证据,表明肌动蛋白是 MAL/SRF 为侵袭性细胞迁移所必需调节的关键靶标。通过调节 MAL/SRF 的活性,肌动蛋白蛋白反馈作用于肌动蛋白 mRNA 的产生,以确保肌动蛋白的充足供应。这构成了一个专用的动态平衡反馈系统,为细胞肌动蛋白动力学提供了基础。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27eb/4035534/f75e49d822d2/1048fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27eb/4035534/8355cf5fd7ac/1048fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27eb/4035534/7fd9fdd93379/1048fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27eb/4035534/ef3be4012e3d/1048fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27eb/4035534/f75e49d822d2/1048fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27eb/4035534/8355cf5fd7ac/1048fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27eb/4035534/7fd9fdd93379/1048fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27eb/4035534/ef3be4012e3d/1048fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27eb/4035534/f75e49d822d2/1048fig4.jpg

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