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Localization of Basic Fibroblast Growth Factor and Transforming Growth Factor ß\

By Jennifer J. Gomm, Janet Smith, Glenys K. Ryall, Et Al, Cancer Res, Contact The Aacr Publications, In The Human Mammary Gland, Jennifer J. Gomm, Janet Smith, Glenys K. Ryall, Robin Baillie, Lesley Turnbull and R. Charles Coombes

Abstract

The presence and distribution of basic fibroblast growth factor (bFGF) and transforming growth factor fj, in benign and malignant human breast tissue were determined by immunohistochemistry and immunoblotting. Peroxidase staining of biopsy specimens using a polyclonal antibody to amino acids 1-24 of bFGF and a monoclonal antibody to whole recombinant bFGF showed this growth factor to be localized in the myoepithelial cells of the benign breast. Epithelial cells and stroma were negative. In hyperplasia and intraductal carcinoma in situ staining was still seen around the perimeter of enlarged ducts. In malignant biopsies, however, staining was seen only when benign elements were present or residual myoepithelial cells and basement membrane remained. Antigen absorption and immunoblotting confirmed the antibody staining to be specific for bFGF. Transforming growth factor /i, was shown, using the same techniques

Year: 2013
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