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- W4385754585 abstract "Abstract Current studies on actin function primarily rely on cytoplasmic actin due to the absence of cellular models specifically expressing nuclear actin. Here, cell models capable of expressing varying levels of nuclear F/G‐actin are generated and a significant role of nuclear actin in the regulation of epithelial‐mesenchymal transition (EMT) is uncovered. Through immunoprecipitation and mass spectrometry analyses, distinct binding partners for nuclear F‐actin (β‐catenin, SMAD2, and SMAD3) and nuclear G‐actin (MYBBP1A, NKRF, and MYPOP) are investigated, which respectively modulate EMT‐promoting and EMT‐repressing transcriptional events. While nuclear F‐actin promotes EMT with enhanced cell migration, survival, and elongated mesenchymal morphology, nuclear G‐actin represses EMT and related cell activities. Mechanistically, nuclear F‐actin enhances β‐catenin, SMAD2, and SMAD3 expression and stability in the nuclei, while nuclear G‐actin increases MYBBP1A, NKRF, and MYPOP expression and stability in the nuclei. The association between nuclear F/G‐actin and N‐cadherin/E‐cadherin in the cell lines (in vitro), and increased nuclear actin polymerization in the wound healing cells (in vivo) affirm a significant role of nuclear actin in EMT regulation. With evidence of nuclear actin polymerization and EMT during development, and irregularities in disease states such as cancer and fibrosis, targeting nuclear actin dynamics to trigger dysregulated EMT warrants ongoing study." @default.
- W4385754585 created "2023-08-12" @default.
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- W4385754585 date "2023-08-11" @default.
- W4385754585 modified "2023-10-09" @default.
- W4385754585 title "Nuclear Actin Polymerization Regulates Cell Epithelial‐Mesenchymal Transition" @default.
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- W4385754585 doi "https://doi.org/10.1002/advs.202300425" @default.
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