NecroX-7 is a novel small molecule of the NecroX series, its chemical compound is C25H32N4O4S2 with molecular weight 516.67 based on the indole-moiety. It prevents from oxidative stress-induced cell death. NecroX-7 prevented the release of HMGB1 or ameliorated hepatic IR injury. It is shown that NecroX-7 can inhibit NAPDH oxidase activity and osteoclast differentiation. Furthermore, NecroX-7 protected against APAP-induced hepatic injury by directly binding to NAPQI. However, the function and the underlying mechanisms of NecroX-7 in cancer cell growth have not been well established. This study was aimed at evaluating the efficacy as anticancer agent in human lymphoma cells.

Human Burkitt lymphoma cell lines were treated NecroX-7 in vitro. The effects of NecroX-7 treatment were evaluated using MTS assay for cell viability and annexin-V/propidium iodide labeling for apoptosis. Cell cycle was analyzed by Flow cytometry. Western blotting was used to look for NecroX-7 induced protein changes.

As results, NecroX-7 treatment efficiently inhibited cell growth at dose- and time- dependent and induced apoptosis in cell lines. Apoptosis was showed by accumulation of annexin-V and PI-positive cells, caspase-3 activation and induction of PARP cleavage. The IC50 values of NecoX-7 in cell lines were around 50 uM. NecroX-7 induced G2/M phase cell cycle arrest in Ramos and Daudi cells.These results suggest that NecroX-7 is a potential anticancer agent for treatment of human Burkitt lymphoma cells and provide a rational for preclinical and clinical evaluation of NecoX-7 for lymphoma therapy.

Citation Format: Eun- Jung Kim, Eun Sol Lee, Keon- Il Im, Soon Ha Kim, Jung- Yeon Lim, Nayoun Kim, Seok- Goo Cho. In vitro evaluation of a novel chemotherapeutic agent, NecroX-7, in human Burkitt lymphoma cells. [abstract]. In: Proceedings of the 105th Annual Meeting of the American Association for Cancer Research; 2014 Apr 5-9; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2014;74(19 Suppl):Abstract nr 2720. doi:10.1158/1538-7445.AM2014-2720