OVCAR-5 Cells

OVCAR-5 is a human ovarian carcinoma cell line established from the tumor of an untreated patient. This cell line serves as a robust model for studying the biology of high-grade ovarian cancers and is particularly valuable for investigating responses to platinum-based chemotherapeutics, as well as the molecular mechanisms underlying chemoresistance. OVCAR-5 has been extensively utilized in preclinical drug development and cancer biology research.

OVCAR-5 cells display an epithelial morphology and grow as an adherent monolayer under standard culture conditions. Unlike other OVCAR series cell lines derived from chemoresistant patients, OVCAR-5 is derived from a chemotherapy-naive tumor, providing a baseline model for exploring intrinsic tumor properties. Notably, OVCAR-5 expresses metallothionein, a protein associated with cellular responses to heavy metals and oxidative stress, but this does not necessarily confer cisplatin resistance as observed in other cell lines of the series. The cell line has a cisplatin sensitivity profile distinct from those derived from chemoresistant patients, with an IC50 value of 0.61 μM for cisplatin.

In research, OVCAR-5 is used to screen novel chemotherapeutics, evaluate targeted therapies, and study combinations of drugs aimed at improving treatment outcomes for ovarian carcinoma. It is also employed in exploring the genetic and epigenetic landscapes of high-grade ovarian cancers, including DNA damage repair pathways, signaling networks, and the tumor microenvironment. OVCAR-5 remains an important tool for advancing the understanding and treatment of ovarian cancer.