Abstract
Abstract: Cancer biomarkers or tumor-associated antigens (TAA) are the focus area of current research in cancer biology for diagnosis, prognosis, screening, and targeted treatments. Breast cancer is the second most common type of cancer, affecting women more than men. Conventional methods and antibody-targeted therapies are less effective and suffer systemic cytotoxicity, poor tissue sensitivity, low penetration capacity, and reduced accumulation of the drug in tumor cells that limit its application and sometimes result in treatment failure. Opting for aptamer-mediated targeted delivery of various anti-cancer agents (drugs, siRNA, miRNA, shRNA and peptides) could possibly overcome these limitations by utilizing aptamer as a targeting ligand. The purpose of this article is to review the novel indicative biomarkers of breast cancer and also describe current applications of aptamer-guided active targeting systems in breast cancer therapy in vivo and in vitro.
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