The overall goal of this proposal is to determine the role of the glucocorticoid receptor in mouse skin carcinogenesis. Preliminary studies have demonstrated a loss of cytoplasmic glucocorticoid receptors in carcinogenesis. To evaluate the significance of these observations, a four-part approach will be taken. First, in order to construct a more complete molecular model of multistage carcinogenesis in epithelial malignancies, tumors from initial studies will be examined for alterations in glucocorticoid receptor expression and correlated with markers of tumor progression and changes observed in other carcinogenic mechanisms under study in this program project. Second, nuclear translocation and association with the fos/jun oncoproteins will be investigated as mechanisms of glucocorticoid receptor loss. Third, to determine if glucocorticoid receptor loss if tumorigenic, down regulation of glucocorticoid receptor expression will be induced using antisense suppression, and functional loss will be mimicked using RU 486, a pharmacologic antagonist. Fourth, changes in glucocorticoid receptor mRNA during phorbol ester promotion in epidermis will be evaluated to determine how pre-translational changes relate to glucocorticoid receptor loss. The results of this research will allow an evaluation of the glucocorticoid receptor as a potential tumor suppressor gene. An improved understanding of the role of glucocorticoid receptor loss in carcinogenesis may ultimately lead to improved clinical intervention strategies.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Research Program Projects (P01)
Project #
5P01CA057596-05
Application #
2338795
Study Section
Project Start
Project End
Budget Start
1995-10-01
Budget End
1996-09-30
Support Year
5
Fiscal Year
1996
Total Cost
Indirect Cost
Name
University of Texas MD Anderson Cancer Center
Department
Type
DUNS #
001910777
City
Houston
State
TX
Country
United States
Zip Code
77030
Wen, Kuang-Yi; Miller, Suzanne M; Stanton, Annette L et al. (2012) The development and preliminary testing of a multimedia patient-provider survivorship communication module for breast cancer survivors. Patient Educ Couns 88:344-9
Miliani de Marval, Paula L; Macias, Everardo; Conti, Claudio J et al. (2004) Enhanced malignant tumorigenesis in Cdk4 transgenic mice. Oncogene 23:1863-73
Rodriguez-Puebla, Marcelo L; Miliani de Marval, Paula L; LaCava, Margaret et al. (2002) Cdk4 deficiency inhibits skin tumor development but does not affect normal keratinocyte proliferation. Am J Pathol 161:405-11
Stern, Mariana C; Benavides, Fernando; LaCava, Margaret et al. (2002) Genetic analyses of mouse skin tumor progression susceptibility using SENCAR inbred derived strains. Mol Carcinog 35:13-20
Miliani de Marval, P L; Gimenez-Conti, I B; LaCava, M et al. (2001) Transgenic expression of cyclin-dependent kinase 4 results in epidermal hyperplasia, hypertrophy, and severe dermal fibrosis. Am J Pathol 159:369-79
Benavides, F; Glasscock, E; Coghlan, L G et al. (2001) PCR-based microsatellite analysis for differentiation and genetic monitoring of nine inbred SENCAR mouse strains. Lab Anim 35:157-62
Benavides, F; Stern, M C; Glasscock, E et al. (2000) Microsatellite DNA variants between the inbred SENCAR mouse strains. Mol Carcinog 28:191-5
Coghlan, L G; Gimenez-Conti, I; Kleiner, H E et al. (2000) Development and initial characterization of several new inbred strains of SENCAR mice for studies of multistage skin carcinogenesis. Carcinogenesis 21:641-6
Rodriguez-Puebla, M L; LaCava, M; Miliani De Marval, P L et al. (2000) Cyclin D2 overexpression in transgenic mice induces thymic and epidermal hyperplasia whereas cyclin D3 expression results only in epidermal hyperplasia. Am J Pathol 157:1039-50
Stern, M C; Benavides, F; Klingelberger, E A et al. (2000) Allelotype analysis of chemically induced squamous cell carcinomas in F(1) hybrids of two inbred mouse strains with different susceptibility to tumor progression. Carcinogenesis 21:1297-301

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