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Sirtris Scientific Advisory Board

Sirtris’ scientific advisory board includes many of the world’s thought leaders in the sirtuin field as well as experts in drug development and policy.  Members of the board work on collaborative projects and twice each year meet to discuss new developments in the sirtuin field. 

Co-Chairs

+Leonard Guarente, Ph.D.

Dr. Guarente is the Novartis Professor of Biology at the Massachusetts Institute of Technology. Dr. Guarente's lab identified SIR2 as the key gene regulating life span in yeast and C. elegans – an extra copy of SIR2 significantly increases the life span of both organisms. Notably, his lab first discovered the novel biochemical activity of the SIR2 gene product – NAD-dependent deacetylase. This activity suggested that SIR2 might be involved in linking diet to the regulation of aging, addressing the longstanding question of how calorie restriction (CR) might slow aging. Dr. Guarente's lab also studies the mammalian ortholog of SIR2 -- SIRT1. Dr. Guarente’s findings show that extension of healthy life span by CR is not a passive event, but results from the activation of SIRT1, which then impacts on cellular and organismal processes to deliver the benefits. Dr. Guarente received his B.S. from the Massachusetts Institute of Technology and his Ph. D. at Harvard, under the supervision of Jon Beckwith. He trained as a postdoctoral fellow at Harvard with Mark Ptashne and has been on the faculty of MIT since 1981. His book Ageless Quest (Cold Spring Harbor Press, 2003) describes the pathway of discovery of SIR2 as a key regulator of life span in response to diet.

+David Sinclair, Ph.D.

Dr. Sinclair is a co-founder of Sirtris Pharmaceuticals, Professor of Pathology at Harvard Medical School and Director of the Glenn Laboratories for the Biological Mechanisms of Aging. He has made key contributions to the scientific understanding of aging. In 1997, Dr. Sinclair identified the cause of aging in yeast, a first for any species, and in 2003 reported the discovery of a conserved master regulatory gene controlling this process. His laboratory at Harvard is currently focused on slowing diseases of aging in mammals using genetic and pharmacological means. Dr. Sinclair has authored over 40 peer-reviewed scientific publications, including several seminal papers in Nature, Cell and Science. He has received numerous awards and honors for his research. Dr. Sinclair performed his post-doctoral work with Dr. Leonard Guarente at M.I.T. and holds a Ph.D. in Biochemistry and Molecular Genetics from the University of New South Wales, Australia. Dr. Sinclair was honored by Genzyme with the Outstanding Achievement in Biomedical Science Award for 2004.

+Christoph Westphal, M.D., Ph.D.

Christoph Westphal, M.D., Ph.D., co-founded Sirtris Pharmaceuticals, Inc. in 2004 and has since served as Chief Executive Officer. In addition to leading Sirtris as an independent discovery performance unit within GlaxoSmithKline (GSK), Dr. Westphal serves as the Senior Vice President of GSK’s Centre of Excellence for External Drug Discovery (CEEDD). At the CEEDD, Dr. Westphal and his team are developing a network of external alliances with world-class biotech companies to bring breakthrough medicines into the GSK pipeline. Dr. Westphal is based at Sirtris, which is located in Cambridge, Massachusetts.

Under Dr. Westphal’s leadership, Sirtris has become a recognized pioneer in the research and development of small molecule drugs that target the sirtuins, a family of enzymes that control the aging process. In 2007, Dr. Westphal successfully led the company through its initial public offering, resulting in recognition by the Boston Globe as one of the Globe 100 top companies of 2007. In June 2008, GSK acquired Sirtris for $720 million.

Dr. Westphal also serves as the Scientific Advisory Board Chair for the Healthy Lifespan Institute, a non-profit organization dedicated to educating people about the aging process and advancing research that can help us live longer and healthier lives.

Dr. Westphal was previously co-founder and CEO of Alnylam Pharmaceuticals, (NASDAQ: ALNY), Momenta Pharmaceuticals (NASDAQ: MNTA) and Acceleron Pharma. He was also co-founder of Concert Pharmaceuticals. Prior to establishing Sirtris, Dr. Westphal was a general partner at a venture fund and a consultant with McKinsey & Company. Dr. Westphal earned his M.D. from Harvard Medical School and Ph.D. in genetics from Harvard University; and he graduated with a B.A. summa cum laude and Phi Beta Kappa from Columbia University.

Dr. Westphal currently serves on the Board of Directors for Alnara Pharmaceuticals, Inc., the Board of Fellows of Harvard Medical School and the Board of Overseers of the Boston Symphony Orchestra. Dr. Westphal has been the lead or senior author on several patent applications and scientific papers in journals, including Cell, Nature and Nature Genetics.

Dr. Westphal has received a number of industry awards, including a Stevie Award for Executive of the Year from The 2009 American Business Awards; the 2009 E-3 Public Company Science & Technology Company Executive Award at the annual Emerald Investment Forum; 2008 Outstanding Individual of the Year Award at the annual Laguna Biotech CEO Meeting; 2008 Corporate Leader Award of Distinction from the American Federation for Aging Research (AFAR); recognition in the Pharmaceutical Executive “45 Under 45” and PharmaVOICE 100 issues, both in 2008; Mass High Tech All Star Award in 2007; and Ernst & Young’s New England Entrepreneur of the Year award in the Biopharmaceutical category in 2006.

In addition to being interviewed for numerous high-profile articles and broadcast segments, Dr. Westphal has been featured on 60 Minutes with Morley Safer, CNN’s Vital Signs with Dr. Sanjay Gupta, an ABC News Special hosted by Barbara Walters, and as the subject of a Fortune cover article.

Dr. Westphal enjoys traveling (he has visited over 130 countries) and playing the cello. He is also fluent in English, German, Spanish and French. Dr. Westphal is married with five young children.


+Fred Alt, Ph.D.

Dr. Alt is the Charles A. Janeway Professor of Pediatrics and Genetics at Harvard Medical School, the Director of the CBR Institute for Biomedical Research, and an Investigator with the Howard Hughes Medical Institute. He obtained his Ph.D. in biological sciences from Stanford University, where he worked with Robert Schimke. Dr. Alt did postdoctoral work with David Baltimore at the Massachusetts Institute of Technology. His honors include election to the National Academy of Sciences, the American Academy of Arts and Sciences, and the European Molecular Biology Organization, and he won the 2004 Clowes Memorial Award from the American Association of Cancer Research.

+Peter Hutt, J.D.

Mr. Hutt is a senior counsel in the Washington, D.C. law firm of Covington & Burling, LLP specializing in food and drug law. He graduated from Yale College and Harvard Law School and obtained a Masters of Law degree in Food and Drug Law from NYU Law School. Mr. Hutt served as Chief Counsel for the Food and Drug Administration during 1971-1975. He is the co-author of the casebook used to teach food and drug law throughout the country and has published more than 175 book chapters and articles on food and drug law and health policy. Mr. Hutt has been a member of the Institute of Medicine since it was founded in 1971. He serves on academic, philanthropic, and venture capital advisory boards, and the boards of startup biotechnology companies. Mr. Hutt recently served on the Panel on the Administrative Restructuring of the National Institutes of Health and the Working Group to Review Regulatory Activities within the Division of AIDS of the National Institute of Allergy and Infectious Diseases, and is a member of the Board of Directors of the AERAS Global TB Vaccine Foundation.

+Shin-ichiro Imai, M.D., Ph.D.

Dr. Imai is an Associate Professor in the departments of Developmental Biology and Medicine at the Washington University School of Medicine. His laboratory is devoted to studying the roles of mammalian SIRT1 and NAMPT-mediated NAD biosynthesis in the systemic regulation of metabolism and aging in mammals. Based on his research, he has recently proposed a novel concept of a systemic regulatory network for mammalian aging, named “NAD World.”

Dr. Imai received his M.D. and Ph.D. degrees from Keio University School of Medicine in Tokyo, Japan, where he studied cellular aging-associated transcriptional regulation in human fibroblasts and proposed his “Heterochromatin Island Hypothesis of Aging.” He then joined the laboratory of Leonard Guarente, Ph.D., at the Massachusetts Institute of Technology for his fellowship. During his postdoctoral period, he made a phenomenal discovery of the NAD-dependent protein deacetylase activity of yeast and mammalian Sir2 proteins and published his landmark paper in the journal Nature in 2000. Dr. Imai has received many prestigious awards for his works, including the American Society for Cell Biology/Glenn Foundation Award, the Ellison Medical Foundation New Scholar Award in Aging, the American Diabetes Association Innovation Award, the Juvenile Diabetes Research Foundation Innovation Award, the Glenn Award for Research in Biological Mechanisms of Aging, the WUSM 2008 Distinguished Investigator Award, the Longer Life Foundation Pilot & Feasibility Award, and the Ellison Medical Foundation Senior Scholar in Aging Award.

+C. Ronald Kahn, M.D.

Dr. Kahn is the Mary K. Iacocca Professor of Medicine at Harvard Medical School and was formerly the President of the Joslin Diabetes Center. He also has served as Research Director of Joslin for more than 17 years. During his tenure, the Joslin Diabetes Center research program has grown from $2 million to over $25 million, with a staff of over 220 people. Dr. Kahn has received numerous honors and awards, including the highest scientific awards of the American Diabetes Association, Juvenile Diabetes Foundation, International Diabetes Federation, the American Federation of Clinical Research, and the Endocrine Society of the U.S. In 1999, Dr. Kahn received two prestigious national honors — election to membership in the National Academy of Sciences and election to the Institute of Medicine.

+Robert S. Langer, Ph.D.

Dr. Langer is the Kenneth J. Germeshausen Professor of Chemical and Biomedical Engineering at the Massachusetts Institute of Technology. Dr. Langer has over 800 articles. He also has over 500 issued or pending patents worldwide, one of which was cited as the outstanding patent in Massachusetts in 1988 and one of 20 outstanding patents in the United States. Dr. Langer’s patents have been licensed or sublicensed to over 100 pharmaceutical, chemical, biotechnology and medical device companies; a number of these companies were launched on the basis of these patent licenses. He served as a member of the United States Food and Drug Administration’s SCIENCE Board, the FDA’s highest advisory board, from 1995 - 2002 and as its Chairman from 1999-2002. Dr. Langer has co-founded a number of companies including: AIR (Advanced Inhalation Research, Inc.; acquired by Alkermes), EnzyMed, Inc. (acquired by Albany Molecular), Enzytech, Inc. (merged with Alkermes), Focal, Inc. (acquired by Genzyme), MicroCHIPS, Momenta Pharmaceuticals, Inc. (NASDAQ:MNTA), Pervasis Therapeutics, Sontra Medical Corporation (OTC:SONT), TransForm Pharmaceuticals, Inc. (acquired by Johnson & Johnson). Dr. Langer is a member of the National Academy of Sciences, National Academy of Engineering, and the Institute of Medicine.

+Jeffery D. Milbrandt, M.D.,Ph.D.

Dr. Milbrandt is a Professor of Pathology and Immunology, as well as a Professor of Medicine at Washington University in St. Louis. His laboratory studies the molecular events involved in the development of the vertebrate nervous system. Dr.Milbrandt received his M.D. at the Washington University School of Medicine and his Ph.D. in Biochemistry at the University of Virginia.

+Pere Puigserver, Ph.D.

Dr. Puigserver is Assistant Professor of Cell Biology, Harvard Medical School, Dana-Farber Cancer Institute. Prior to Dana Farber, Dr. Puigserver was an Associate Professor at Johns Hopkins School of Medicine. Dr. Puigserver was a post-doctoral fellow in the laboratory of Bruce Spiegelman at the Dana Farber Cancer Institute.

+Eric Ravussin, Ph.D.

Dr. Ravussin is the Chief of the Division of Health and Performance Enhancement and the Douglas L. Gordon Chair in Diabetes and Metabolism at the Pennington Biomedical Research Center. Dr. Ravussin leads the CALERIE trial team and is recognized internationally as a clinical investigator in the field of obesity and type 2 diabetes mellitus. His research now focuses on the genetic and molecular basis of obesity and its co-morbidities. Dr. Ravussin's studies are aimed at understanding the molecular mechanisms that determine the inter-individual variability in energy expenditure, fat oxidation and in the activity of the sympathetic nervous system. He also concentrates on the relationship between physiology and gene expression in response to diet and physical training. Dr.Ravussin received a Ph.D. from the University of Lausanne in Switzerland.

+Paolo Sassone-Corsi, Ph.D.

Dr. Sassone-Corsi is a Distinguished Professor and the Chair of the Department of Pharmacology at the University of California, Irvine. Prior to this, he was Directeur de Recherche at the Centre National de la Recherche Scientifique (CNRS) in Strasbourg, France. His honors include the EMBO (European Molecular Biology Organization) Gold Medal, the Prix Charles-Léopold Mayer de l’Académie des Sciences, Paris, and the Edwin B. Astwood Award of The Endocrine Society. He is also an ISI Highly Cited recipient. His research focuses on the mechanisms of gene expression, including chromatin remodeling, circadian rhythms and germ cells.

+Anthony Sauve, Ph.D.

Dr. Sauve is an Associate Professor of Pharmacology at Weill Medical College of Cornell University and is a Faculty Member in the Tri-Institutional (Rockefeller-Sloan-Cornell) Chemical Biology Training Program. His laboratory studies the NAD dependent deacetylases (sirtuins), including SIRT1, the ADP-ribosyl-cyclases (CD38) and the poly-ADP-ribosylpolymerases (PARPs). Dr. Sauve's laboratory is focused on the biochemical mechanisms of ADP-ribosyltransferases and the design and synthesis of small molecules that modulate these enzymes. His laboratory is also developing chemical approaches to study NAD metabolism in cells and tissues. Dr. Sauve received his Ph.D. in Chemistry from Princeton University.

+Li-Hui Tsai, Ph.D.

Dr. Tsai is the Picower Professor of Neuroscience at the Massachusetts Institute of Technology and a Howard Hughes Medical Institute Investigator. She received her Ph.D. degree from the University of Texas Southwestern Medical Center at Dallas under the direction of Bradford Ozanne. Dr. Tsai then joined Ed Harlow's laboratory at Cold Spring Harbor Laboratory and Massachusetts General Hospital for postdoctoral training.

+Eric M. Verdin, M.D.

Dr. Verdin is Associate Director and Senior Investigator at the Gladstone Institute of Virology and Immunology and a Professor of Medicine at the University of California, San Francisco (UCSF). One focus area in Dr. Verdin’s laboratory is the role of protein acetylation in biological processes, particularly in modulating the immune response. Specifically, his laboratory studies histone deacetylase enzymes (HDACs) that remove acetyl groups from histones and non-histone proteins. Acetylation is a ubiquitous modification affecting a rapidly growing number of cellular proteins and biological processes. Dr. Verdin’s group has demonstrated that two members of the human sirtuin family of HDACs, SirT2 and SirT3, deacetylate non-histone substrates, including tubulin and mitochondrial proteins.

+Cynthia Wolberger, Ph.D.

Dr. Wolberger is Professor of Biophysics and Biophysical Chemistry at the Johns Hopkins University School of Medicine and is a Howard Hughes Medical Institute researcher. Dr. Wolberger's lab uses x-ray crystallography and other biophysical approaches to study the structure and behavior of protein complexes and is the world leader in the structural biology of sirtuin deacetylases.

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