Molecular determinants and modifiers of Matrin-3 toxicity, condensate dynamics, and droplet morphology.
Molecular determinants and modifiers of Matrin-3 toxicity, condensate dynamics, and droplet morphology.
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Matrin-3毒性、冷凝动力学和液滴形态的分子决定因素和修饰剂。
DOI:
10.1016/j.isci.2022.103900
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发表时间:
2022-03-18
期刊:
影响因子:
5.8
通讯作者:
Jackrel ME
中科院分区:
文献类型:
--
作者:
Sprunger ML;Lee K;Sohn BS;Jackrel ME
Matrin-3 (MATR3) is a DNA- and RNA-binding protein implicated in amyotrophic lateral sclerosis (ALS), frontotemporal dementia (FTD), and distal myopathy. Here, we report the development of a yeast model of MATR3 proteotoxicity and aggregation. MATR3 is toxic and forms dynamic shell-like nuclear condensates in yeast. Disease-associated mutations in MATR3 impair condensate dynamics and disrupt condensate morphology. MATR3 toxicity is largely driven by its RNA-recognitions motifs (RRMs). Further, deletion of one or both RRMs drives coalescence of these condensates. Aberrant phase separation of several different RBPs underpins ALS/FTD, and we have engineered Hsp104 variants to reverse this misfolding. Here, we demonstrate that these same variants also counter MATR3 toxicity. We suggest that these Hsp104 variants which rescue MATR3, TDP-43, and FUS toxicity might be employed against a range of ALS/FTD-associated proteins. We anticipate that our yeast model could be a useful platform to screen for modulators of MATR3 misfolding. Matrin-3 forms liquid, dynamic, shell-like nuclear condensates in yeast Disease-associated mutations in Matrin-3 impair condensate dynamics and morphology Proteotoxicity of Matrin-3 in yeast is driven by its RNA-recognition motifs Potentiated Hsp104 variants can suppress the toxicity of Matrin-3WT and mutants Biological sciences; Cell biology
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影响因子:
14.8
作者:
Gietz, R. Daniel;Schiestl, Robert H.
通讯作者:
Schiestl, Robert H.
影响因子:
3.7
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Gallego-Iradi, M. Carolina;Clare, Alexis M.;Borchelt, David R.
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Borchelt, David R.
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64.5
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DeSantis ME;Leung EH;Sweeny EA;Jackrel ME;Cushman-Nick M;Neuhaus-Follini A;Vashist S;Sochor MA;Knight MN;Shorter J
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作者:
Castellano LM;Bart SM;Holmes VM;Weissman D;Shorter J
通讯作者:
Shorter J
影响因子:
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作者:
Johnson, Brian S.;Snead, David;Gitler, Aaron D.
通讯作者:
Gitler, Aaron D.