Unveiling Role of MicroRNAs as Treatment Strategy and Prognostic Markers in Triple Negative Breast Cancer

Triple negative breast cancer is the highly aggressive form of breast cancer with high reoccurrence rate and is short of effective treatment strategy. The prognostic markers of it are also not well understood. miRNAs are the global regulators of various cancers on the virtue of its ability to post transcriptional regulation of genes involved in various pathways involved in complicating TNBC. In this review we studied the expression of miRNAs at different stages of TNBC and the role of miRNAs as a tumor suppressor to inhibit cell proliferation, angiogenesis, invasion and metastasis and to induce apoptosis and thereby proposing these miRNAs as an effective treatment strategy against TNBC. miRNA also acts as chemosenstizer in enhancing chemosensitivity of conventional drugs against resistant TNBC cells. The present review emphasizes the importance of miRNAs as prognostic markers to determine the overall survival, disease free survival and distant metastasis free survival rate in TNBC patients. We speculate that miRNA can present themselves as an effective treatment strategy and prognostic marker against TNBC.