Defects in the DNA Damage Response of Patient-derived Endometriosis Stromal Cells.

ABSTRACT: With each menstrual cycle, endometrial cells rapidly proliferate and decidualize in preparation for pregnancy. Such rapid proliferation generates replication stress and results in DNA damage with irreparable cells undergoing senescence. Here, we examine the DNA damage response (DDR) of patient-derived stromal cell lines from menstrual effluent (MenSC) of healthy donors and donors with endometriosis. We found that proliferating MenSCs from endometriosis patients (Endo) have a defective DDR that is also present when these cells reach confluence. In G1, these cells contain more 53BP1-nuclear bodies (NBs) and are less senescent than healthy samples. We also treated with hydroxyurea (Hu) to generate replication stress and found that Endo MenSCs responded to this treatment by activating the DDR

SUBMITTER: Cadle K 

PROVIDER: S-EPMC12636311 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature