Li-Shu Wang, PhD

Li-Shu Wang, PhD2019 Presentation Title – Are We Ready for Precision Cancer Prevention Using Black Raspberries?

Dr. Wang is an Associate Professor of Medicine, Medical College of Wisconsin. She received her Ph.D. in Veterinary Biosciences in the College of Veterinary Medicine at Ohio State University in June, 2006. Currently, she is an editorial member for Journal of Berry Research and e-Food Journal. Dr. Wang has published in high-rank journals in the field of cancer prevention such as Clinical Cancer Research, Carcinogenesis, Cancer Prevention Research, Cancer Immunology Research, Frontiers in Immunology, International Journal of Cancer, etc. Dr. Wang’s expertise is in colorectal cancer (CRC) biology and prevention in animals and humans.

The major goal of Dr. Wang’s research is to translate the findings from bench to bedside. Using bio-directed fractionation, Dr. Wang showed that the anthocyanins in black raspberries (BRBs) are important for their chemopreventive effects and she provided evidence that the ellagitannins may be less important. More importantly, she has evidence that BRBs cause demethylation of tumor suppressor genes in rodent and human colon leading to their enhanced expression in two human clinical trials. The protective effects of BRBs against human and mouse CRC are associated, at least in part, with their hypomethylation activities. Loss of responses to berry treatment in humans may be due to decreased sensitivity to berry-induced DNA demethylation. Further, BRB intervention induces significant metabolic changes and affects energy generating pathways in CRC patients.

Recently, Dr. Wang’s laboratory is investigating the mechanisms of active metabolites from BRBs to influence colon and pancreatic cancer immunology through epigenetic modifications. The results from animal models of both cancer types indicate that berries dampen tumor-induced immune suppressive microenvironment by decreasing CD11b+ myeloid cells, and boosting CD8+ T-cell and natural killer cells. In an effort to translate laboratory findings to clinics, Dr. Wang’s group is investigating the effects of BRBs on DNA methylation in patients with myelodysplastic syndrome (MDS). The aim of this pilot clinical trial is to evaluate the hypomethylating properties of BRBs in MDS patients after 3 months of BRB supplementation.