In a recent study, the treatment of different human cancer cell lines in vitro with ethylene diamine tetra-acetic acid (EDTA) showed a promising anticancer activity which could be a novel promising approach for cancer treatment. The aim of this study is to address the ability of EDTA to enhance the antitumor efficacy of the low dose of cisplatin (Cis) treatment in Ehrlich ascetic carcinoma (EAC) bearing mice. Sixty female albino mice were divided into six groups. The 1 st group of mice was served as a negative control. 2 nd -6 th groups were inoculated intraperitoneal (i.p) with 2×10 6 EAC cells/mouse. After one day of inoculation, the 2 nd , 3 rd and 4 th groups were injected daily for 6 days (early treatment) with phosphate buffer saline, low dose of Cis and Cis/EDTA, respectively. After six days, the 5 th and 6 th groups were injected with the low dose of Cis and Cis/EDTA for 6 consecutive days (late treatment), respectively. At day 14, all groups of mice were sacrificed, sera were collected for biochemical assessment,
HIGHLIGHTS• EDTA enhanced the antitumor efficacy of the low dose of Cisplatin.• Low dose of Cisplatin did not inhibit tumor growth • Co-treatment with EDTA delayed and decreased tumor growth.• EDTA decreased the toxicity of Cisplatin. 2 El-Naggar, S.A.; et al.