Expression of epidermal growth factor and platelet-derived growth factor receptors during cervical carcinogenesis. 2000

T J Mayer, and E E Frauenhoffer, and A C Meyers
Department of Microbiology and Immunology, Pennsylvania State University College of Medicine. The Milton S. Hershey Medical Center, Hershey 17033, USA.

Altered expression of epidermal growth factor receptor (EGFR) is common in a variety of epithelial malignancies, including cervical cancer. However, the prognostic significance of EGFR expression is controversial for cervical cancer. Platelet-derived growth factor receptor (PDGFR) expression status is unknown in cervical cancer. Our results demonstrated that expression of EGFR and PDGFR was greatly enhanced in vivo and in organotypic cultures of low-grade cervical dysplastic tissues, but levels were decreased in high-grade lesions. To our knowledge, this is the first report identifying the expression of PDGFR in human epithelium. When low-grade dysplastic organotypic culture tissues were induced to differentiate more completely, EGFR expression, but not PDGFR expression, was relocalized to the basal layer as seen in normal tissues. Differentiation also induced phosphorylation of EGFR but not PDGFR. Our results suggest a role for EGFR and PDGFR during the early stages of cervical carcinogenesis, and demonstrate the facility of organotypic cultures to study the role of these growth factors in the development of cervical cancer.

UI MeSH Term Description Entries
D010766 Phosphorylation The introduction of a phosphoryl group into a compound through the formation of an ester bond between the compound and a phosphorus moiety. Phosphorylations
D011233 Precipitin Tests Serologic tests in which a positive reaction manifested by visible CHEMICAL PRECIPITATION occurs when a soluble ANTIGEN reacts with its precipitins, i.e., ANTIBODIES that can form a precipitate. Precipitin Test,Test, Precipitin,Tests, Precipitin
D002471 Cell Transformation, Neoplastic Cell changes manifested by escape from control mechanisms, increased growth potential, alterations in the cell surface, karyotypic abnormalities, morphological and biochemical deviations from the norm, and other attributes conferring the ability to invade, metastasize, and kill. Neoplastic Transformation, Cell,Neoplastic Cell Transformation,Transformation, Neoplastic Cell,Tumorigenic Transformation,Cell Neoplastic Transformation,Cell Neoplastic Transformations,Cell Transformations, Neoplastic,Neoplastic Cell Transformations,Neoplastic Transformations, Cell,Transformation, Cell Neoplastic,Transformation, Tumorigenic,Transformations, Cell Neoplastic,Transformations, Neoplastic Cell,Transformations, Tumorigenic,Tumorigenic Transformations
D002583 Uterine Cervical Neoplasms Tumors or cancer of the UTERINE CERVIX. Cancer of Cervix,Cancer of the Cervix,Cancer of the Uterine Cervix,Cervical Cancer,Cervical Neoplasms,Cervix Cancer,Cervix Neoplasms,Neoplasms, Cervical,Neoplasms, Cervix,Uterine Cervical Cancer,Cancer, Cervical,Cancer, Cervix,Cancer, Uterine Cervical,Cervical Cancer, Uterine,Cervical Cancers,Cervical Neoplasm,Cervical Neoplasm, Uterine,Cervix Neoplasm,Neoplasm, Cervix,Neoplasm, Uterine Cervical,Uterine Cervical Cancers,Uterine Cervical Neoplasm
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D015153 Blotting, Western Identification of proteins or peptides that have been electrophoretically separated by blot transferring from the electrophoresis gel to strips of nitrocellulose paper, followed by labeling with antibody probes. Immunoblotting, Western,Western Blotting,Western Immunoblotting,Blot, Western,Immunoblot, Western,Western Blot,Western Immunoblot,Blots, Western,Blottings, Western,Immunoblots, Western,Immunoblottings, Western,Western Blots,Western Blottings,Western Immunoblots,Western Immunoblottings
D017479 Receptors, Platelet-Derived Growth Factor Specific receptors on cell membranes that react with PLATELET-DERIVED GROWTH FACTOR, its analogs, or antagonists. The alpha PDGF receptor (RECEPTOR, PLATELET-DERIVED GROWTH FACTOR ALPHA) and the beta PDGF receptor (RECEPTOR, PLATELET-DERIVED GROWTH FACTOR BETA) are the two principle types of PDGF receptors. Activation of the protein-tyrosine kinase activity of the receptors occurs by ligand-induced dimerization or heterodimerization of PDGF receptor types. PDGF Receptors,Platelet-Derived Growth Factor Receptors,Receptors, PDGF,PDGF Receptor,Platelet-Derived Growth Factor Receptor,Platelet Derived Growth Factor Receptor,Platelet Derived Growth Factor Receptors,Receptor, PDGF,Receptors, Platelet Derived Growth Factor
D066246 ErbB Receptors A family of structurally related cell-surface receptors that signal through an intrinsic PROTEIN-TYROSINE KINASE. The receptors are activated upon binding of specific ligands which include EPIDERMAL GROWTH FACTORS, and NEUREGULINS. EGF Receptor,Epidermal Growth Factor Receptor,Epidermal Growth Factor Receptor Family Protein,Epidermal Growth Factor Receptor Protein-Tyrosine Kinase,ErbB Receptor,HER Family Receptor,Receptor, EGF,Receptor, Epidermal Growth Factor,Receptor, TGF-alpha,Receptor, Transforming-Growth Factor alpha,Receptor, Urogastrone,Receptors, Epidermal Growth Factor-Urogastrone,TGF-alpha Receptor,Transforming Growth Factor alpha Receptor,Urogastrone Receptor,c-erbB-1 Protein,erbB-1 Proto-Oncogene Protein,EGF Receptors,Epidermal Growth Factor Receptor Family Proteins,Epidermal Growth Factor Receptor Kinase,HER Family Receptors,Proto-oncogene c-ErbB-1 Protein,Receptor Tyrosine-protein Kinase erbB-1,Receptor, ErbB-1,Receptors, Epidermal Growth Factor,Epidermal Growth Factor Receptor Protein Tyrosine Kinase,ErbB-1 Receptor,Family Receptor, HER,Family Receptors, HER,Proto oncogene c ErbB 1 Protein,Proto-Oncogene Protein, erbB-1,Receptor Tyrosine protein Kinase erbB 1,Receptor, ErbB,Receptor, ErbB 1,Receptor, HER Family,Receptor, TGF alpha,Receptor, Transforming Growth Factor alpha,Receptors, EGF,Receptors, Epidermal Growth Factor Urogastrone,Receptors, ErbB,Receptors, HER Family,c erbB 1 Protein,c-ErbB-1 Protein, Proto-oncogene,erbB 1 Proto Oncogene Protein

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