Description of Research Expertise:
Epigenomic regulation of transcription and metabolism by nuclear receptors; mechanism of obesity-associated insulin resistance and diabetes; circadian regulation of metabolism
Key words: diabetes, endocrinology, epigenomics, nuclear receptors, circadian rhythms
Description of Research
The Lazar laboratory is studying the transcriptional regulation of metabolism. We are particularly focused on the role played by nuclear receptors (NRs). In the absence of ligand, NRs bind to DNA and function as potent transcriptional repressors by recruiting corepressor complexes that include the chromatin modulating enzyme histone deacetylase 3 (HDAC3). We are studying the tissue-specific and physiological roles of the corepressor complexes using by combining genomic, genetic, proteomic, bioinformatic, and metabolic phenotyping approaches. We are especially interested in the circadian NR Rev-erb alpha, which utilizes the corepressor complex to potently repress transcription. Rev-erb alpha is a key repressive component of the circadian clock that coordinates metabolism and biological rhythms. We are also studying PPAR gamma, a nuclear receptor that is a master regulator of adipocyte (fat cell) differentiation. Ligands for PPAR gamma have potent antidiabetic activity, and thus PPAR gamma represents a key transcriptional link between obesity and diabetes. The molecular, cellular, and integrative biology of these factors are being studied in mice and humans. We also have discovered resistin, a novel hormone and target of PPAR gamma that is made by fat cells in rodents and by macrophages in humans, and are testing the hypothesis that resistin links metabolism to inflammation in human metabolic diseases.
Rotation Projects for 2017-2018
There are numerous potential projects that I would be pleased to discuss in person.
David Steger, Ph.D. (Research Assistant Professor)
Victoria Nelson, Ph.D. (Post-doc)
Dongyin Guan, Ph.D. (Post-doc)
David Hill, M.D., Ph.D. (Post-doc)
Marine Adlanmerini, Ph.D. (Post-doc)
Wenxiang Hu, Ph.D. (Post-doc)
Yehuda Shabtai, Ph.D. (Post-doc)
Pieterjan Dierickx, Ph.D., (Post-doc)
Chunjie Jiang, Ph.D., (Post-doc)
Yong Hoon Kim (Graduate Student)
Hannah Richter (Graduate Student)
Erika Briggs (Research Specialist)
Lindsey Peed (Research Specialist)
Kavya Chgireddy (Bioinformatics Research Specialist)
Wesley Ho (Research Specialist)
Ying Xiong (Research Specialist)
Joe Weaver (Lab Manager)
Adlanmerini M, Carpenter BJ, Remsberg JR, Aubert Y, Peed LC, Richter HJ, Lazar MA.: Circadian lipid synthesis in brown fat maintains murine body temperature during chronic cold. Proc Natl Acad Sci U S A. 2019 Sep 10;116(37):18691-18699. doi: 10.1073/pnas.1909883116. Epub 2019 Aug 26.
116 (37): 18691-18699,2019.
Jaitin DA, Adlung L, Thaiss CA, Weiner A, Li B, Descamps H, Lundgren P, Bleriot C, Liu Z, Deczkowska A, Keren-Shaul H, David E, Zmora N, Eldar SM, Lubezky N, Shibolet O, Hill DA, Lazar MA, Colonna M, Ginhoux F, Shapiro H, Elinav E, Amit I.: Lipid-Associated Macrophages Control Metabolic Homeostasis in a Trem2-Dependent Manner. Cell : 2019.
Dierickx P, Emmett MJ, Jiang C, Uehara K, Liu M, Adlanmerini M, Lazar MA.: SR9009 has REV-ERB-independent effects on cell proliferation and metabolism. Proc Natl Acad Sci U S A
116 (25): 12147-12152,2019.
Kuo T, Damle M, González BJ, Egli D, Lazar MA, Accili D.: Induction of α cell-restricted Gc in dedifferentiating β cells contributes to stress-induced β-cell dysfunction. JCI Insight.
Dallner OS, Marinis JM, Lu YH, Birsoy K, Werner E, Fayzikhodjaeva G, Dill BD, , Molina H, Moscati A, Kutalik Z, Marques-Vidal P, Kilpeläinen TO, Grarup N, Linneberg A, Zhang Y, Vaughan R, Loos RJF, Lazar MA, Friedman JM.: Dysregulation of a long noncoding RNA reduces leptin leading to a leptin-responsive form of
obesity. Nat Med. 25 (3): 507-516,2019.
Emmett MJ, Lazar MA.: Integrative regulation of physiology by histone
deacetylase 3. Nat Rev Mol Cell Biol. 20 (2): 102-115,2019.
Hu W, Jiang C, Guan D, Dierickx P, Zhang R, Moscati A, Nadkarni GN, Steger DJ, Loos RJF, Hu C, Jia W, Soccio RE, Lazar MA.: Patient Adipose Stem Cell-Derived Adipocytes Reveal Genetic Variation that Predicts Antidiabetic Drug Response. Cell Stem Cell. 24 (2): 299-308,2019.
Koerner MV, FitzPatrick L, Selfridge J, Guy J, De Sousa D, Tillotson R, Kerr, A, Sun Z, Lazar MA, Lyst MJ, Bird A.: Toxicity of overexpressed MeCP2 is
independent of HDAC3 activity. Genes Dev. 32 ((23-24)): 1514-1524,2018.
Guan D, Xiong Y, Borck PC, Jang C, Doulias PT, Papazyan R, Fang B, Jiang C, Zhang Y, Briggs ER, Hu W, Steger D, Ischiropoulos H, Rabinowitz JD, Lazar MA.: Diet-Induced Circadian Enhancer Remodeling Synchronizes Opposing Hepatic Lipid Metabolic Processes. Cell.
174 (4): 831-842.e12,2018.
Nelson VL, Nguyen HCB, Garcìa-Cañaveras JC, Briggs ER, Ho WY, DiSpirito JR, Marinis JM, Hill DA, Lazar MA.: PPARγ is a nexus controlling alternative activation of macrophages via glutamine metabolism. Genes Dev. 32 (15-16): 1035-1044,2018.
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