Lactate accumulation induces H4K12la to activate super-enhancer-driven RAD23A expression and promote niraparib resistance in ovarian cancer.

ABSTRACT: Ovarian cancer is a gynecological malignancy with the highest recurrence and mortality rates. Although niraparib can effectively affect its progression, the challenge of drug resistance remains. Herein, niraparib-resistant ovarian cancer cell lines were constructed to identify the abnormally activated enhancers and associated target genes via RNA in situ conformation sequencing. Notably, the target gene RAD23A was markedly upregulated in niraparib-resistant cells, and inhibiting RAD23A restored their sensitivity. Additionally, abnormal activation of glycolysis in niraparib-resistant cells induced lactate accumulation, which promoted the lactylation of histone H4K12 lysine residues. Correlation analysis showed that key glycolysis enzymes such as pyruvate kinase M and lactate dehydrogenase A

SUBMITTER: Lu B 

PROVIDER: S-EPMC11921584 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature