Dr. Ren-Ke Li, MD, PhD is a Professor of Medicine in the Department of Surgery, Division of Cardiac Surgery at the University of Toronto. Dr. Li is a Senior Scientist at the Toronto General Research Institute, University Health Network working in the field of stem cell transplantation and tissue engineering. Dr. Li is the Canada Research Chair in Cardiac Regeneration (Tier 1) of the Canadian Institutes of Health Research and was a Career Investigator of the Heart and Stroke Foundation of Canada. Dr. Li has been on the forefront in the field of cell transplantation and tissue engineering. In 1996, he published the first demonstration that cells transplanted into injured heart can form a muscle tissue, regenerated damaged hear, and improved heart function. Recently, his group has defined optimal cell types for transplantation, and described the optimal conditions under which the transplanted cells can achieve the most efficient repair. Currently, his research group is attempting to rejuvenate aged individual using young stem cells to improve repair and regenerative capacity of aged patients. He also developed a platform for targeted gene or regenerative factor delivery for targeted tissue/organ therapy. Dr. Li has published 206 peer-reviewed papers and his work has appeared in high impact journals including Journal of Clinical Investigation, Circulation, Circulation Research, Journal American College Cardiology, European Heart Journal. Dr. Li has been invited to contribute several commentaries and viewpoint articles and is an international opinion leader in his field.