School of Medicine
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Professor of Medicine (Hematology) and of Biochemistry
Current Research and Scholarly Interests Telomeres are nucleoprotein complexes that protect chromosome ends and shorten with cell division and aging. We are interested in how telomere shortening influences cancer, stem cell function, aging and human disease. Telomerase is a reverse transcriptase that synthesizes telomere repeats and is expressed in stem cells and in cancer. We have found that telomerase also regulates stem cells and we are pursuing the function of telomerase through diverse genetic and biochemical approaches.
Professor of Genetics
Current Research and Scholarly Interests Our lab studies the molecular basis of longevity. We are interested in the mechanism of action of known longevity genes, including FOXO and SIRT, in the mammalian nervous system. We are particularly interested in the role of these longevity genes in neural stem cells. We are also discovering novel genes and processes involved in aging using two short-lived model systems, the invertebrate C. elegans and an extremely short-lived vertebrate, the African killifish N. furzeri.
Howard Y. Chang
Professor of Dermatology
Current Research and Scholarly Interests Our research is focused on how the activities of hundreds or even thousands of genes (gene parties) are coordinated to achieve biological meaning. We have pioneered methods to predict, dissect, and control large-scale gene regulatory programs; these methods have provided insights into human development, cancer, and aging.
Associate Professor of Medicine (Endocrinology, Gerontology and Metabolism)
Current Research and Scholarly Interests Our lab is interested in understanding molecular processes that underlie aging and age-associated pathologies in mammals. We focus on a family of genes, the SIRTs, which regulate stress resistance and lifespan in lower organisms such as yeast, worms, and flies. In mammals, we recently uncovered a number of ways in which SIRT factors may contribute to cellular and organismal aging by regulating resistance to various forms of stress. We have now begun to characterize the molecular mechanisms by which these SIRT factors function. In particular, we are interested in how SIRT factors regulate chromatin, the molecular structure in which the DNA of mammalian genomes is packaged, and how such functions may link genome maintenance to stress resistance and aging.
Lindhard Family Professor in Pediatric Cancer Biology and Professor of Pathology
Current Research and Scholarly Interests The role of oncoproteins in cancer and development; molecular and cellular biology of hematologic malignancies; targeted molecular therapies of cancer.
Department of Pathology Professor in Experimental Pathology and Professor of Developmental Biology
Current Research and Scholarly Interests Chromatin regulation and its roles in human cancer and the development of the nervous system. Engineering new methods for studying and controlling chromatin in living cells.
Professor of Chemical and Systems Biology and of Biochemistry
Current Research and Scholarly Interests My lab has two main goals: to understand mitotic regulation and to understand the systems-level logic of simple signaling circuits. We often make use of Xenopus laevis oocytes, eggs, and cell-free extracts for both sorts of study. We also carry out single-cell fluorescence imaging studies on mammalian cell lines. Our experimental work is complemented by computational and theoretical studies aimed at identifying the design principles of regulatory circuits.
Assistant Professor of Biology
Current Research and Scholarly Interests We study the regulation and evolution of gene expression using a combination of experimental and computational approaches.
Our work brings together quantitative genetics, genomics, epigenetics, and evolutionary biology to achieve a deeper understanding of how genetic variation within and between species affects genome-wide gene expression and ultimately shapes the phenotypic diversity of life.
Professor of Biology and of Genetics
Current Research and Scholarly Interests The long term goal of our research is to understand how proteins fold in living cells. My lab uses a multidisciplinary approach to address fundamental questions about molecular chaperones, protein folding and degradation. In addition to basic mechanistic principles, we aim to define how impairment of cellular folding and quality control are linked to disease, including cancer and neurodegenerative diseases and examine whether reengineering chaperone networks can provide therapeutic strategies.
Professor of Biology
Current Research and Scholarly Interests We study the molecular mechanisms by which chromatin-signaling networks effect nuclear and epigenetic programs, and how dysregulation of these pathways leads to disease. Our work centers on the biology of lysine methylation, a principal chromatin-regulatory mechanism that directs epigenetic processes. We study how lysine methylation events are generated, sensed, and transduced, and how these chemical marks integrate with other nuclear signaling systems to govern diverse cellular functions.