Abstract
Overexpression of ZNF33A (Krüppel-type zinc finger 33A) promotes carcinogenesis in several malignant tumors. However, the biochemical role and clinical importance of ZNF33A in triple-negative breast cancer (TNBC) still need to be explored. In this study, overexpression of ZNF33A in TNBC patient tissues and cell lines led to a worse prognosis. ZNF33A promoted cell growth and facilitated the resistance of cancer cells to inhibitors of bromodomain andextraterminal domain (BET) in TNBC. ZNF33A also promoted the induction of c-Myc, the primary player for the resistance to BET inhibitors in TNBC. In conclusion, ZNF33A maybe a tumor growth-promoting factor associated with TNBC prognosis, and ZNF33A repression may sensitize TNBC cells to BET inhibitors.
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