Okuda S, Yamakado N, Higashikawa K, Uetsuki R, Ishida F, Rizqiawan A, Ono S, Mizuta K, Kamata N, Tobiume K. Dexamethasone resets stable association of nuclear Snail with LSD1 concomitant with transition from EMT to partial EMT.
Biochem Biophys Rep 2022;
30:101277. [PMID:
35592611 PMCID:
PMC9110894 DOI:
10.1016/j.bbrep.2022.101277]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 03/23/2022] [Accepted: 05/06/2022] [Indexed: 11/26/2022] Open
Abstract
Cancer cells utilize epithelial to mesenchymal transition (EMT) during invasion and metastasis. This program has intermediate cell states with retained epithelial and gained mesenchymal features together, referred to as partial EMT. Histone demethylase LSD1 forms a complex with the EMT master transcription factor Snail to modify histone marks and regulate target gene expression. However, little is known about the formation of this complex during the Snail-dependent transition between partial EMT and EMT. Here we visualized the nuclear complex of Snail and LSD1 as foci signals using proximity ligation assay. We demonstrated that the nuclear foci numbers varied with the transition of exogenous Snail-dependent partial EMT to EMT. Furthermore, we found that long exposure to dexamethasone could revert exogenous Snail-dependent EMT to partial EMT. In this reversion, the nuclear foci numbers also returned to previous levels. Therefore, we concluded that Snail might select partial EMT or EMT by altering its association with LSD1.
Nuclear complexes of Snail was visualized by PLA.
Exogenous Snai1 differently induced pEMT and EMT in OM-1.
Dexamethasone reverted Snail-induced EMT to pEMT.
Nuclei showed distinct foci numbers of Snail/LSD1 and Snail/methylated H3 in EMT and pEMT.
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