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- W3173075313 abstract "Abstract Stress fibers (SFs), which are actomyosin structures, reorganize in response to various cues to maintain cellular homeostasis. Currently, the protein components of SFs are only partially identified, limiting our understanding of their responses. Here we isolate SFs from huma fibroblasts HFF-1 to determine with proteomic analysis the whole protein components and how they change with replicative senescence (RS), a state where cells decline in ability to replicate after repeated divisions. We found that at least 263 proteins are associated with SFs, and 101 of them are upregulated with RS, by which SFs become larger in size. Among them, we focused on eEF2 (eukaryotic translation elongation factor 2) as it exhibited upon RS the most significant increase in abundance. We show that eEF2 is critical to the reorganization and stabilization of SFs in senescent fibroblasts. Our findings provide a novel molecular basis for SFs to be reinforced to resist cellular senescence." @default.
- W3173075313 created "2021-06-22" @default.
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- W3173075313 date "2021-06-01" @default.
- W3173075313 modified "2023-09-23" @default.
- W3173075313 title "Proteome of actin stress fibers" @default.
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- W3173075313 doi "https://doi.org/10.1101/2021.06.01.446528" @default.
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