Dual role of CASP8AP2/FLASH in regulating epithelial-to-mesenchymal transition plasticity (EMP).
| Autor: | Catalanotto M; LSU Health Shreveport, School of Medicine, LA, USA., Vaz JM; School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, USA., Abshire C; Research Core Facility, LSUHSC, Shreveport, LA, USA., Youngblood R; Department of Molecular and Cellular Physiology, LSUHSC, Shreveport, LA, USA., Chu M; Feist-Weiller Cancer Center, INLET Core, LSUHSC, Shreveport, LA, USA., Levine H; Center for Theoretical Biological Physics, Northeastern University, Boston, MA, USA; Department of Physics, Northeastern University, Boston, MA, USA; Department of Bioengineering, Northeastern University, Boston, MA, USA., Jolly MK; Center for BioSystems Science and Engineering, Indian Institute of Science, Bangalore, India., Dragoi AM; Department of Molecular and Cellular Physiology, LSUHSC, Shreveport, LA, USA; Feist-Weiller Cancer Center, INLET Core, LSUHSC, Shreveport, LA, USA. Electronic address: anamaria.dragoi@lsuhs.edu. |
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| Jazyk: | angličtina |
| Zdroj: | Translational oncology [Transl Oncol] 2024 Jan; Vol. 39, pp. 101837. Date of Electronic Publication: 2023 Nov 18. |
| DOI: | 10.1016/j.tranon.2023.101837 |
| Abstrakt: | Background: Epithelial-to-mesenchymal transition (EMT) is a developmental program that consists of the loss of epithelial features concomitant with the acquisition of mesenchymal features. Activation of EMT in cancer facilitates the acquisition of aggressive traits and cancer invasion. EMT plasticity (EMP), the dynamic transition between multiple hybrid states in which cancer cells display both epithelial and mesenchymal markers, confers survival advantages for cancer cells in constantly changing environments during metastasis. Methods: RNAseq analysis was performed to assess genome-wide transcriptional changes in cancer cells depleted for histone regulators FLASH, NPAT, and SLBP. Quantitative PCR and Western blot were used for the detection of mRNA and protein levels. Computational analysis was performed on distinct sets of genes to determine the epithelial and mesenchymal score in cancer cells and to correlate FLASH expression with EMT markers in the CCLE collection. Results: We demonstrate that loss of FLASH in cancer cells gives rise to a hybrid E/M phenotype with high epithelial scores even in the presence of TGFβ, as determined by computational methods using expression of predetermined sets of epithelial and mesenchymal genes. Multiple genes involved in cell-cell junction formation are similarly specifically upregulated in FLASH-depleted cells, suggesting that FLASH acts as a repressor of the epithelial phenotype. Further, FLASH expression in cancer lines is inversely correlated with the epithelial score. Nonetheless, subsets of mesenchymal markers were distinctly up-regulated in FLASH, NPAT, or SLBP-depleted cells. Conclusions: The ZEB1 low /SNAIL high /E-cadherin high phenotype described in FLASH-depleted cancer cells is driving a hybrid E/M phenotype in which epithelial and mesenchymal markers coexist. Competing Interests: Declaration of Competing Interest The authors declare no conflict of interest. (Copyright © 2023. Published by Elsevier Inc.) |
| Databáze: | MEDLINE |
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