The long-term objectives of this research are to understand the molecular and metabolic events that are involved in the actions of glucocorticoid hormones on their target cells. This includes the elucidation of the intracellular regulatory mechanisms that operate physiologically to mediate changes in cellular metabolism and genetic expression as a background for understanding of the molecular mechanisms through which endocrine regulation is superimposed. The efforts will largely be directed to an analysis of the mechanisms through which glucocorticoids alter rates of protein biosynthesis at the level of translation. One of the objectives will be a rigorous examination of a hypothesis that some of the late (after 2 hrs of hormone exposure) inhibitory effects of glucocorticoid hormones on transport and synthetic reactions, including protein biosynthesis, are the cells' response to a glucocorticoid-induced inhibition of cellular ATP production, which in turn leads to small, steady-state changes in ratios of adenine nucleotides. Studies on the lethal actions of glucocorticoids are also underway which focus on the appearance of a novel set of proteins that confirm cellular resistance to glucocorticoid-induced cell killing.

Agency
National Institute of Health (NIH)
Institute
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Type
Research Project (R01)
Project #
5R01DK016177-15
Application #
3225548
Study Section
Endocrinology Study Section (END)
Project Start
1978-08-01
Project End
1987-07-31
Budget Start
1986-08-01
Budget End
1987-07-31
Support Year
15
Fiscal Year
1986
Total Cost
Indirect Cost
Name
University of Rochester
Department
Type
Schools of Medicine
DUNS #
208469486
City
Rochester
State
NY
Country
United States
Zip Code
14627
Young, D A; Evans, C H; Smith, T J (1998) Leukoregulin induction of protein expression in human orbital fibroblasts: evidence for anatomical site-restricted cytokine-target cell interactions. Proc Natl Acad Sci U S A 95:8904-9
Wheeler, T T; O'Banion, M K; Colasurdo, A M et al. (1997) Bovine papillomavirus E5 oncogene stimulates DNA synthesis in C127 fibroblasts without general effects on growth factor responsive protein phosphorylations. Arch Virol 142:953-64
Wang, H S; Cao, H J; Winn, V D et al. (1996) Leukoregulin induction of prostaglandin-endoperoxide H synthase-2 in human orbital fibroblasts. An in vitro model for connective tissue inflammation. J Biol Chem 271:22718-28
Wheeler, T T; Sadowski, H B; Young, D A (1994) Glucocorticoid and phorbol ester effects in 3T3-L1 fibroblasts suggest multiple and previously undescribed mechanisms of glucocorticoid receptor-AP-1 interaction. Mol Cell Endocrinol 104:29-38
Woodlock, T J; Young, D A; Boal, T R et al. (1993) Phorbol ester-induced membrane proteins in chronic leukemic B-lymphocytes. Candidate proteins for the L-system amino acid transporter. J Biol Chem 268:16020-7
Sadowski, H B; Wheeler, T T; Young, D A (1992) Gene expression during 3T3-L1 adipocyte differentiation. Characterization of initial responses to the inducing agents and changes during commitment to differentiation. J Biol Chem 267:4722-31
Brennan, J K; Lee, K S; Frazel, M A et al. (1991) Interactions of dimethyl sulfoxide and granulocyte-macrophage colony-stimulating factor on the cell cycle kinetics and phosphoproteins of G1-enriched HL-60 cells: evidence of early effects on lamin B phosphorylation. J Cell Physiol 146:425-34
Ip, M M; Shea, W K; Sykes, D et al. (1991) The truncated glucocorticoid receptor in the P1798 mouse lymphosarcoma is associated with resistance to glucocorticoid lysis but not to other glucocorticoid-induced functions. Cancer Res 51:2786-96
Wheeler, T T; Xiao, J P; Dowdy, S F et al. (1991) Suppression of tumorigenicity of a Wilms' tumor cell line is associated with a decrease in synthesis of two proteins. Oncogene 6:1903-7
Han, J W; Sadowski, H; Young, D A et al. (1990) Persistent induction of cyclooxygenase in p60v-src-transformed 3T3 fibroblasts. Proc Natl Acad Sci U S A 87:3373-7

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