Disclosed is a novel therapeutic strategy to sensitize Estrogen Receptor positive (ER+) breast and ovarian tumors to chemotherapy.
It is known that anti-estrogens are active in preventing the development or progression of estrogen receptor positive (ER+) breast cancer. It is also known that breast cancer patients can develop chemosensitivity to subsequent chemotherapy with paclitaxel. Thus far, it is not clearly understood what underlies the paclitaxel chemosensitivity.
Dr. Weimin Fan at the Medical University of South Carolina has discovered that Estrogen Receptor (ER) expression significantly reduces sensitivity to paclitaxel-induced apoptosis in breast cancer cells. In addition, Dr. Fan showed that inhibition of ER expression with an anti-estrogen significantly enhanced the sensitivity of breast cancer cells to paclitaxel-induced apoptosis.
This finding might lead to promising new treatment options for patients with ER+ breast and ovarian cancer.