ArticleMolecular cancer therapeutics2025
All-trans Retinoic Acid Sensitizes Epithelial Ovarian Cancer to PARP Inhibition after Exposure to Cisplatin.
Article in Molecular cancer therapeutics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Hyperthermia-induced BRCA2 reduction potentiates PARPi sensitivity in BRCA2-proficient ovarian carcinoma.Discover oncology · 2025Article
- Targeting Multidrug Resistance in Cancer: Impact of Retinoids, Rexinoids, and Carotenoids on ABC Transporters.International journal of molecular sciences · 2025Review
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Authors and funding
6 authors.
Funding
Abstract
Epithelial ovarian cancer (EOC) is the most lethal of gynecologic malignancies. The standard-of-care treatment for EOC is platinum-based chemotherapy such as cisplatin (CDDP). Notably, platinum-based chemotherapy induces resistance of EOC to PARP inhibition. However, therapeutic approaches targeting PARP inhibitor (PARPi) resistance remain to be explored. In this study, we show that all-trans retinoic acid (ATRA) reduces PARPi resistance-associated EOC cells induced by CDDP treatment. Clinically applicable ATRA suppressed the outgrowth of CDDP-treated EOC cells both in vitro and in vivo. Moreover, a CDDP treatment followed by niraparib maintenance therapy in combination with ATRA improved the survival of EOC-bearing mice. These phenotypes correlated with the PARPi-resistant EOC signature, which consists of elevated expression of aldehyde dehydrogenase 1 family member A1, nicotinamide phosphoribosyltransferase, PARP1, and checkpoint kinase 1, as well as elevated NAD+ level-mediated high activity of aldehyde dehydrogenase 1 family member A1 and PARP1. Mechanistically, ATRA downregulates the expression of these genes and level of intracellular NAD+. Our results suggest that ATRA in conjunction with PARPi represents a promising maintenance therapeutic strategy for EOC.
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