Yaacov Barak, PhD

Associate Professor, Department of Obstetrics, Gynecology & Reproductive Sciences



Our research focuses on the developmental functions of the nuclear hormone receptors PPARgamma and PPARdelta – two key therapeutic targets in metabolic diseases, which also regulate distinct aspects of placental development and metabolism.

Projects in the laboratory investigate how both PPARs regulate placental development and metabolism, as well as the functions of PPARgamma in adipocytes (fat cells), with particular emphasis on its control of adipocyte death and regeneration. Our research integrates hypothesis-based and discovery-driven approaches and utilizes cutting-edge gene targeting, histological, physiological and molecular phenotyping, stem and primary cell cultures, and transcriptional profiling. As our research evolved, second-generation studies now encompass functional analyses of PPAR cofactors and target genes and dissection of the transcriptional mechanisms of PPARs in vivo.


Selected Publications

  • Shalom-Barak T, Liersemann J, Memari B, Flechner L, Devor C, Bernardo TM, Kim S, Matsumoto N, Friedman SL, Evans RM, White JH, Barak Y. 2018. Ligand-dependent corepressor (LCoR) is a rexinoid-inhibited PPARgamma-RXRalpha coactivator. Mol Cell Biol. 38:e00107-17.
  • Lee S, Pallerla SR, Kim S, Shaffer B, Simerly CR, Chaillet JR, Barak Y. Esrrb-Cre
    Excises loxP-Flanked Alleles in Early Four-Cell Embryos. Genesis. 54:53-61, 2016.
  • Shalom-Barak T, Zhang X, Chu T, Schaiff WT, Reddy JK, Xu J, Sadovsky Y, Barak Y.
    Placental PPAR regulates spatiotemporally diverse genes and a unique metabolic
    network. Dev Biol. 372:143-155, 2012.
  • Barak Y, Sadovsky Y, & Shalom-Barak T. PPAR signaling in placental development and
    function. PPAR Res, 142082, 2008.
  • Kim S, Huang L-W, Snow KJ, Ablamunits V, Hasham MG, Young TH, Paulk AC,
    Richardson JE, Affourtit J, Shalom-Barak T, Bult CJ, & Barak Y. A mouse model of conditional lipodystrophy. Proc Natl Acad Sci USA,104:16627-32, 2007.
  • Barak Y & Kim S. 2007. Genetic manipulations of PPARs: Effects on obesity and
    metabolic disease. PPAR Res, 12781, 2007.
  • Shalom-Barak T, Nicholas JM, Wang Y, Zhang X, Ong ES, Young TH, Gendler SJ,
    Evans RM, & Barak Y. PPAR controls Muc1 transcription in trophoblasts. Mol Cell Biol, 24:10661-69, 2004.
  • He W, Barak Y, Hevener A, Olson P, Liao D, Le J, Nelson M, Ong, E, Olefsky JM, &
    Evans RM. Adipose-specific peroxisome proliferator-activated receptor knockout causes insulin resistance in fat and liver, but not in muscle. Proc Natl Acad Sci USA, 100:15712-17, 2003.
  • Barak Y, Liao D, He W, Ong ES, Nelson MC, Olefsky JM, Boland R, & Evans RM.
    Effects of peroxisome proliferator-activated receptor  on placentation, adiposity, and colorectal cancer. Proc Natl Acad Sci USA, 99:303-08, 2002.
  • Barak Y, Nelson MC, Ong ES, Jones YZ, Ruiz-Lozano P, Koder A, Chien KR, & Evans RM. PPARgammais required for placental, cardiac, and adipose tissue development. Mol Cell, 4:585-95, 1999.

For additional publications, see: (Pubmed or other online collection)
http://www.ncbi.nlm.nih.gov/sites/myncbi/yaacov.barak.1/bibliography/40786214/publi c/?sort=date&direction=ascending