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Selective Repression Of Retinoic Acid Target Genes By Rip140 During Induced Tumor Cell Differentiation Of Pluripotent Human Embryonal Carcinoma Cells, Kelly C. Heim, Kristina A. White, Dexin Deng, Craig R. Tomlinson, Jason Moore, Sarah Freemantle, Michael Spinella Sep 2007

Selective Repression Of Retinoic Acid Target Genes By Rip140 During Induced Tumor Cell Differentiation Of Pluripotent Human Embryonal Carcinoma Cells, Kelly C. Heim, Kristina A. White, Dexin Deng, Craig R. Tomlinson, Jason Moore, Sarah Freemantle, Michael Spinella

Dartmouth Scholarship

The use of retinoids as anti-cancer agents has been limited due to resistance and low efficacy. The dynamics of nuclear receptor coregulation are incompletely understood. Cell-and context-specific activities of nuclear receptors may be in part due to distinct coregulator complexes recruited to distinct subsets of target genes. RIP140 (also called NRIP1) is a ligand-dependent corepressor that is inducible with retinoic acid (RA). We had previously shown that RIP140 limits RA induced tumor cell differentiation of embryonal carcinoma; the pluriopotent stem cells of testicular germ cell tumors. This implies that RIP140 represses key genes required for RA-mediated tumor cell differentiation. Identification …


Exercise-Mediated Regulation Of Hsp70 Gene Expression Following Exercise Training, C.W. Melling, David Thorp, Kevin Milne, Matthew Krause, Earl Noble Dec 2006

Exercise-Mediated Regulation Of Hsp70 Gene Expression Following Exercise Training, C.W. Melling, David Thorp, Kevin Milne, Matthew Krause, Earl Noble

Jamie Melling

An issue central to understanding the biological benefits associated with regular exercise training is to elucidate the intracellular mechanisms governing exercise-conferred cardioprotection. Heat shock proteins (HSPs), most notably the inducible 70-kDa HSP family member Hsp70, are believed to participate in the protection of the myocardium during cardiovascular stress. Following acute exercise, activation of PKA mediates the suppression of an intermediary protein kinase, ERK1/2, which phosphorylates and suppresses the activation of the heat shock transcription factor 1 (HSF1). However, following exercise training, ERK1/2 has been reported to regulate the transcriptional activation of several genes involved in cell growth and proliferation and …