Expression levels of MRP1, GST-π, and GSK3β in ovarian cancer and the relationship with drug resistance and prognosis of patients

Expression levels of multidrug resistance-associated protein 1 (MRP1), glutathione S-transferase pi (GST-pi) and glycogen synthase kinase-3 beta (GSK3 beta) were investigated in ovarian epithelial cancer and the relationship with the primary drug resistance of patients with ovarian cancer to chemotherapy. One hundred and twenty-one ovarian cancer tissue samples from patients who underwent ovarian cancer resection from January 2013 to June 2015 in Liaoning Cancer Hospital and Institute, Cancer Hospital of China Medical University were enrolled in the Experimental group, while 58 ovarian tissue samples from patients with fallopian tube obstruction but with no ovarian cancer who received surgical treatment for blocked fallopian tube were included in the Control group. After the detection of the expression levels of MRP1, GST-pi, and GSK3 beta mRNA by RT-PCR and the analysis of related clinical pathological factors, patients in the Experimental group were divided into the Chemotherapy-sensitive and Chemotherapy-resistant groups according to the chemotherapy efficacy. Additionally, with the mean expression levels of MRP1, GST-pi, and GSK3 beta in ovarian cancer tissues as the boundaries, the expression levels of the three genes in the Experimental group were classified into high expression and low expression. Ovarian cancer tissues had much higher expression levels of MRP1, GST-pi, and GSK3 beta mRNA than normal ovarian tissues (P<0.05). The expression levels of MRP1, GST-pi, and GSK3 beta mRNA in the Chemotherapy-sensitive group were significantly lower than those in the Chemotherapy-resistant group (P<0.05). Patients with high expression of MRP1, GST-pi, and GSK3 beta mRNA had a much lower 3-year survival rate than patients with low expression of the genes (P<0.05). Highly expressed in patients with ovarian cancer, MRP1, GST-pi, and GSK3 beta mRNA play an important role in the development and drug resistance of ovarian cancer, which ensures this study is of positive clinical guiding significance in developing proper treatment for ovarian cancer and evaluating the efficacy of chemotherapy.