Dr. Muthusamy Thangaraju (Raju) is a breast cancer research scientist. I started my research career as a breast cancer Scientist in 1991 when I was a graduate student at the University of Madras, India. Then I moved to the McGill University, Montreal, Canada as a post-doctoral fellowships and studied the role of protein tyrosine phosphatases, SHP1 and SHP2, in breast cancer growth and progression. Then I joined at the Mayo Clinic, Rochester, MN, and expanded my research in breast cancer and investigated the role of BRCA1 and BRCA2, the two breast cancer susceptibility genes, in the regulation of DNA damage repair and apoptosis in breast cancer. Then I joined the National Cancer Institute (NCI), Frederick, MD where I explored the functional implication of CCAAT/Enhancer Binding Protein delta (CEBPD) in mammary gland development and its relevance to mammary tumor growth and progression. Currently, I am a Professor at the Augusta University and studying the role of epigenetics and regulation of mammary gland development and its association with mammary stem cells (MaSC) and breast cancer stem cell (BCSC) self-renewal. I also studies the role of GPR109A, Netrin-1, and Epigenetics in Autosomal Dominant Polycystic Kidney Disease (ADPKD).