The effect of biosynthesized zinc oxide nanoparticles on gene expression and apoptosis in triple-negative breast cancer cells.

OBJECTIVE(S): Some forms of breast cancer such as triple-negative phenotype, are serious challenge because of high metastatic cases, high mortality and resistance to conventional therapy motivated the search for alternative treatment approaches. Nanomaterials are promising candidates and suitable alternatives for improving tumor and cancer cell treatments. MATERIALS AND

methodsBiosynthesis of ZnO NPs by help of Berberis integerrima fruit extract, has been done. Analysis of Zinc Oxide NPs using DLS, FTIR, SEM, and EDS techniques have been performed. Moreover, biological activities of ZnO NPs evaluated through MTT method, Flow cytometry, and real time PCR methods. Biocatalytic and apoptotic activity of ZnO NPs on healthy HFF (human fibroblast cell line), MDA-MB 231, and MDA-MB 468 (triple negative breast cancer cell lines, (TNBC)) evaluated. Furthermore, Bax, Bcl-2 and caspase-3 apoptotic genes expression changes in cancer cells assessed in compare to GAPDH as a house keeping gene.

resultsPhysico-chemical investigation demonstrated ZnO NPs were confirmed by Berberis integerrima fruit extract for the first time. The MTT assay and Flow cytometry results indicated biocompatibility of the ZnO NPs in normal cell line and high anticancer potential against TNBC MDA-MB-231 and MDA-MB-468 cell lines. The IC50 of ZnO NPs were 104.4 and 44.86, 20.96 after 24 hours for HFF, MDA-MB-231 and MDA-MB-468 cells, respectively.

conclusionThe current research showed a fast, cost effective and ecofriendly method for ZnO NPs nanoparticle synthesis. Furthermore, In vitro data analysis demonstrated biocompatibility and highly anticancer effects of biosynthesized ZnO NPs against TNBC cancerous cells.