The broad goal of this research is to define the role of platelet derived growth factor (PDGF) in the regulation of growth of normal and transformed cells. The proposal has three aims: (1) To define the structures and the structure-function relationships of the A and B chains of PDGF and the related gene products p28?c-sis? and p28?v-sis?, with respect to receptor-binding activity and mitogenic activity. PDGF will be isolated from human platelets, p28?c-sis? from human osteosarcoma cells, and p28?v-sis? from simian sarcoma virus-infected NRK cells. Mitogenic activity and receptor-binding activity will be measured in NIH 3T3 mouse cells and human smooth muscle cells. (2) To isolate and characterize the PDGF receptor from mouse 3T3 cells, and to study its biochemistry and biological function in normal and transformed cells. Isolation of large amounts of receptor will permit preparation of polyclonal and monoclonal anti-bodies to the receptor, characterization of the tyrosine specific protein kinase activity of the receptor, and studies of the biosynthesis and degradation of the receptor in normal and transformed cells. (3) To study the relationship between the production and secretion of p28?csis? and p28?v-sis? and tumorigenicity in transformed cells which express these gene products. The gene products will be measured by radioimmunoassay and assay of mitogenic activity, and tumorigenicity measured by production of tumors following injection of transformed cells into nude mice. The effect of infused antibody to human PDGF on the production of tumors by injected transformed cells will also be examined. These studies should provide insight into the role of PDGF in the regulation of normal cell growth and may help understand the alterations in this growth regulation that lead to some forms of cancer. (J)

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Research Project (R01)
Project #
1R01CA038808-01
Application #
3177134
Study Section
Cellular Biology and Physiology Subcommittee 1 (CBY)
Project Start
1984-12-01
Project End
1987-11-30
Budget Start
1984-12-01
Budget End
1985-11-30
Support Year
1
Fiscal Year
1985
Total Cost
Indirect Cost
Name
Saint Louis University
Department
Type
Schools of Medicine
DUNS #
City
Saint Louis
State
MO
Country
United States
Zip Code
63103
Chen, Chun-Lin; Huang, Shuan Shian; Huang, Jung San (2008) Cholesterol modulates cellular TGF-beta responsiveness by altering TGF-beta binding to TGF-beta receptors. J Cell Physiol 215:223-33
Chen, Chun-Lin; Liu, I-Hua; Fliesler, Steven J et al. (2007) Cholesterol suppresses cellular TGF-beta responsiveness: implications in atherogenesis. J Cell Sci 120:3509-21
Huang, S S; Liu, I-Hua; Smith, Tracy et al. (2006) CRSBP-1/LYVE-l-null mice exhibit identifiable morphological and functional alterations of lymphatic capillary vessels. FEBS Lett 580:6259-68
Huang, Shuan S; Huang, Jung S (2005) TGF-beta control of cell proliferation. J Cell Biochem 96:447-62
Huang, Shuan Shian; Leal, Sandra M; Chen, Chun-Lin et al. (2004) Identification of insulin receptor substrate proteins as key molecules for the TbetaR-V/LRP-1-mediated growth inhibitory signaling cascade in epithelial and myeloid cells. FASEB J 18:1719-21
Huang, Shuan Shian; Leal, Sandra M; Chen, Chun-Lin et al. (2004) Cellular growth inhibition by TGF-beta1 involves IRS proteins. FEBS Lett 565:117-21
Ling, Thai-Yen; Chen, Chun-Lin; Huang, Yen-Hua et al. (2004) Identification and characterization of the acidic pH binding sites for growth regulatory ligands of low density lipoprotein receptor-related protein-1. J Biol Chem 279:38736-48
Tseng, Wen-Fang; Huang, Shuan Shian; Huang, Jung San (2004) LRP-1/TbetaR-V mediates TGF-beta1-induced growth inhibition in CHO cells. FEBS Lett 562:71-8
Huang, Shuan Shian; Ling, Thai-Yen; Tseng, Wen-Fang et al. (2003) Cellular growth inhibition by IGFBP-3 and TGF-beta1 requires LRP-1. FASEB J 17:2068-81
Huang, Shuan Shian; Tang, Fen-Mei; Huang, Yen-Hua et al. (2003) Cloning, expression, characterization, and role in autocrine cell growth of cell surface retention sequence binding protein-1. J Biol Chem 278:43855-69

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