Apoptotic activity of Newcastle disease virus in comparison with nisin A in MDA-MB-۲۳۱ cell line

Given the development of drug-resistant cancer cells, designing alternative approaches for cancer treatment seems essential. In this study, we evaluated the anti-tumor effects of nisin A and newcastle disease virus (NDV) on triple-negative MDA-MB-۲۳۱ cell line. The MDA-MB-۲۳۱ cell line was separately and in combination subjected to the different concentrations of a Vero-adapted NDV (JF۸۲۰۲۹۴.۱) and nisin A. The oncolytic effects of these treatments were analyzed by different cytotoxic and apoptosis techniques including trypan blue staining, MTT assay, acridine orange (EB/AO) staining, colony assay and flow cytometry over time. Nisin A at doses of more than ۲۰.۰۰ μg mL-۱ could represent the anti-viral effects and interfere with the oncolytic activity of NDV. Moreover, the analyses indicated that the anti-proliferative and cytotoxic features of combination therapy were stronger than those of individual NDV groups. However, the most apoptotic effect was seen in NDV experimental groups. Taken together, the results from cytotoxicity tests, flow cytometry and colony assay showed that either of the oncolytic agents had significant effects at low concentrations ۷۲ hr post-treatment. Thereby, they had the potential to be used as new approaches in cancer treatment.

Keywords:

Breast cancer , Newcastle disease virus , Nisin A