Chapter 3

Heparan Sulfate Proteoglycans: Novel Targets for Breast Cancer Treatment

Chuay-Yeng Koo, Yin-Ping Sen, Boon-Huat Bay and George W. Yip

Abstract

Breast carcinoma is a leading cause of mortality among female cancer patients worldwide. Heparan sulfate proteoglycans, found predominantly on cell surfaces and in the extracellular matrix, are known to regulate breast cancer cellular behavior. Many studies have shown that these molecules serve as potential biomarkers for breast cancer. Further, they have aberrant expression patterns and participate in various molecular signaling pathways in tumor progression. There is substantial interest in targeting heparan sulfate proteoglycans for cancer treatment, which needs to be tailored in accordance to the roles that each proteoglycan plays in cancer biology. Current clinical trials using phosphomannopentaose sulfate (a heparan sulfate mimic) and various forms of heparin have produced promising results in breast cancer patients. Novel therapeutic agents could potentially be developed to regulate the proteoglycan core proteins as well as enzymes that modify heparan sulfation patterns. This chapter discusses the current patented use and future prospective applications of heparan sulfate proteoglycans as therapeutic targets for breast cancer treatment.

Total Pages: 90-112 (23)

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