Education University of Kentucky, Bachelor of Science in Biology, 1992 Marshall University, School of Medicine, Department of Biochemistry & Molecular Biology, Doctor of Philosophy, 1998 |
Description of Program Our group is interested primarily in the cellular oxygen-sensing system. We use the heart as a model because it displays a wide array of acute and chronic responses to lower than optimal oxygen concentrations. In particular, we have begun to examine the prolyl hydroxylase family of oxygen-sensing enzymes to determine their contribution to the hypoxic responses of the heart. Additional interests include the role of the mitochondrial preprotein import and mitochondrial biogenesis in cellular metabolic dysfunction. Selected Publications Wright G, Steenbergen C, Murphy E. Activation of the prolyl hydroxylase oxygen-sensor results in induction of GLUT1, HO-1, NOS-2 proteins, and confers protection from metabolic inhibition to cardiomyocytes. J. Biol. Chem. 2003 May 30;278(22):20235-9 Wright G, Hasday J, Singh I, and Rogers T. Endotoxin stress-response in cardiomyocytes: NF-kappaB activation and tumor necrosis factor-alpha expression. Am. J. Physiol. (Heart Circ Physiol.) 2002 Mar; 282(3): H872-9 Petranka J, Wright G, Forbes RA, Murphy E. Elevated calcium in preneoplastic cells activates NF-kappa B and confers resistance to apoptosis. J. Biol. Chem. 2001 Oct 5;276(40):37102-8. Wright G, Terada K, Yano M, Sergeev I, and Mori M Oxidative stress inhibits the mitochondrial import of preproteins and leads to their degradation. Exp. Cell Res. 2001 Feb 1;263(1):107-17. Hanlon PR, Fu P, Wright G, Steenbergen C., Arcasoy MO, Murphy E. Mechanisms of erythropoietin-mediated cardioprotection during ischemia-reperfusion injury: role of protein kinase C and phosphatidylinositol 3-kinase signaling. FASEB J. 2005 Aug;19(10):1323-5. Wright G, Hanlon P, Amin K, Steenbergen C, Murphy E, Arcasoy MO. Erythropoietin receptor expression in cardiomyocytes is associated with an acute cardioprotective effect for recombinant erythropoietin during ischemia-reperfusion injury of adult rat hearts. FASEB J. 2004 Jun;18(9):1031-3 |