IFI16 Enhances Chemosensitivity of Breast Cancer Cells by Inhibiting DNA Damage Response.

ABSTRACT: Many chemotherapeutic agents exert their cytotoxic effects primarily by inducing DNA damage. In response to DNA damage, cells activate a signaling cascade known as DNA damage response (DDR) to repair the damage and promote cell survival. Accordingly, the capacity of the DDR in cancer cells is a critical factor that influences their sensitivity to chemotherapy. Here, we identified a role for interferon γ-inducible protein 16 (IFI16) in modulating the DDR and chemosensitivity of breast cancer cells. Depletion of IFI16 in MDA-MB-231 cells conferred resistance to the DNA-damaging agents doxorubicin and 5-fluorouracil, as evidenced by increased cell viability and reduced caspase-3 cleavage compared to control cells. Mechanistically, IFI16 interacted with the MRE11-RAD50-NBS1 complex and disrupt

SUBMITTER: Ka NL 

PROVIDER: S-EPMC12580647 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature