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• W4301395336 abstract "Leiomyosarcoma (LMS) is aggressive cancer with few therapeutic options. LMS cells are more sensitive to proteotoxic stress compared to normal smooth muscle cells. We used small compound 2c to induce proteotoxic stress and compare the transcriptomic adaptations of immortalized human uterine smooth muscle cells (HUtSMC) and LMS cells SK-UT-1. We found that the expression of the heat shock proteins (HSPs) gene family is upregulated with higher efficiency in normal cells. In contrast, the upregulation of BH3-only proteins is higher in LMS cells. HSF1, the master regulator of HSP transcription, is sequestered into transcriptionally incompetent nuclear foci only in LMS cells, which explains the lower HSP upregulation. We also found that several compounds can enhance the cell death response to proteotoxic stress. Specifically, when low doses were used, an inhibitor of salt-inducible kinases (SIKs) and the inhibitor of IRE1α, a key element of the unfolded protein response (UPR), support proteotoxic-induced cell death with strength in LMS cells and without effects on the survival of normal cells. Overall, our data provide an explanation for the higher susceptibility of LMS cells to proteotoxic stress and suggest a potential option for co-treatment strategies." @default.
• W4301395336 created "2022-10-05" @default.
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• W4301395336 date "2022-10-04" @default.
• W4301395336 modified "2023-10-10" @default.
• W4301395336 title "Proteotoxic stress-induced apoptosis in cancer cells: understanding the susceptibility and enhancing the potency" @default.
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• W4301395336 doi "https://doi.org/10.1038/s41420-022-01202-2" @default.
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• W4301395336 hasPublicationYear "2022" @default.
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