Evaluation the effect of several anticancer drugs on Vietnamese breast cancer cells

In Viet Nam, data from Conference of Cancer organized by the Ministry of Health has shown that breast cancer is the most popular cancer in women. Current mainly treatments are surgery, chemotherapy, and radiotherapy. However, the rate of recurrence after five years was very high. One of the causes of high relapse is cancer cells develop multidrug-resistant (MDR) thus reduced the efficiency of treatments. In this research, MTT assay was used for measured cell viability of Vietnamese breast cancer cells (VNBRCA cells) and positive control MCF-7 cell lines after treatment with several anticancer drugs as Doxorubicin (DOX), Tamoxifen (TAM), Mitomycin C (MMC) in 48h. After that, cancer cells were treated at haft maximal inhibitory concentration (IC50) of anticancer drug and observed cell morphology, apoptosis of cellular nuclear by AO/PI staining. IC50 value of VNBRCA cells with DOX, TAM, MMC were 0.641± 0.07 µM, 4.639 ± 0.933 µM and 1.338 ± 0.176 µM, respectively, which higher than IC50 of MCF-7 with DOX, TAM, MMC was 0.168 ± 0.037 µM, 7.085 ± 0.87 µM and 0.379 ± 0.159 µM, respectively. The response of VNBRCA cells with several anticancer drugs as DOX, TAM, and MMC was lower than the response of MCF-7, therefore, it showed that the specific features of VNBRCA cells; from which develop specific treatments for Vietnamese breast cancer patients.