Abstract
mRNA amplification phenotyping (MAPPing) was used to determine the level of mRNA expression of the major EGF-related ligands (EGF, TGF-alpha, and Amphiregulin) and receptors (EGF-receptor and erbB-2) of the EGF supergene family in three ovarian carcinoma lines (OVCA 429 and 433, and NIH:OVCAR-8) under serum-supplemented and reduced serum (minimal medium with 2% fetuin) growth conditions. mRNA levels of TGF-alpha, EGF-R, and erbB-2 were particularly high, and increased approximately 2-3 orders of magnitude when grown in serum, consistent with an autocrine involvement of these genes in ovarian epithelial growth in vitro. Moreover, even when grown without serum, OVCA 429 and NIH:OVCAR-8 expressed elevated levels of mRNA for erbB-2.
MeSH terms
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Amphiregulin
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Base Sequence
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DNA, Neoplasm / analysis
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DNA, Neoplasm / genetics
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EGF Family of Proteins
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Epidermal Growth Factor / genetics*
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Epithelium / pathology
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ErbB Receptors / genetics*
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Female
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Gene Amplification
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Glycoproteins / genetics*
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Growth Substances / genetics*
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Humans
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Intercellular Signaling Peptides and Proteins*
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Ligands
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Molecular Sequence Data
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Ovarian Neoplasms / genetics*
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Ovarian Neoplasms / metabolism*
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Ovarian Neoplasms / pathology
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Phenotype
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Polymerase Chain Reaction
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RNA, Messenger / genetics
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RNA, Messenger / metabolism
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Receptor, ErbB-2 / genetics*
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Transforming Growth Factor alpha / genetics*
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Tumor Cells, Cultured
Substances
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AREG protein, human
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Amphiregulin
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DNA, Neoplasm
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EGF Family of Proteins
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Glycoproteins
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Growth Substances
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Intercellular Signaling Peptides and Proteins
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Ligands
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RNA, Messenger
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Transforming Growth Factor alpha
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Epidermal Growth Factor
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ErbB Receptors
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Receptor, ErbB-2