v-erbB oncogene expression accounts for most variations in protein synthesis after avian erythroblastosis virus infection of chicken embryo fibroblasts: a two-dimensional electrophoresis study.
The effect of the v-erbA and/or v-erbB oncogenes on cellular gene expression was investigated after separation by two-dimensional polyacrylamide gel electrophoresis of [35S]methionine-labelled proteins from chicken embryo fibroblasts (CEF), infected by either the avian erythroblastosis virus (AEV) carrying both oncogenes, or by viruses carrying only one of them. We observed significant changes in the synthesis of 34 proteins in AEV-transformed CEF as compared with control cells. The synthesis of 24 of them was increased while the synthesis of the other 10 proteins was decreased. The expression of v-erbB alone is necessary and sufficient to induce changes in the synthesis of 27 proteins while the 7 remaining modifications are observed only in cells expressing v-erbB together with v-erbA. Moreover, the deregulation of protein synthesis by v-erbB-expressing viruses was correlated with the morphological transformation state of cells.
Immuno-Virologie Moléculaire et Cellulaire, Université Claude Bernard, CNRS UMR 30, Faculté de Médicine Alexis Carrel, Lyon, France.
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Desbois
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Gandrillon
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Samarut
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Madjar
D001355:Alpharetrovirus; D000818:Animals; D001353:Avian Leukosis / Q000235:genetics* / Q000378:metabolism; D002472:Cell Transformation, Viral / Q000235:genetics; D002478:Cells, Cultured; D002642:Chick Embryo; D002872:Chromosome Deletion; D015180:Electrophoresis, Gel, Two-Dimensional; D005347:Fibroblasts / Q000378:metabolism; D015967:Gene Expression Regulation, Viral / Q000235:genetics*; D014644:Genetic Variation / Q000235:genetics*; D009154:Mutation / Q000235:genetics; D015513:Oncogene Proteins / Q000096:biosynthesis*; D018774:Oncogene Proteins v-erbA; D009857:Oncogenes / Q000235:genetics*; D015682:Retroviridae Proteins, Oncogenic / Q000096:biosynthesis*; D013462:Sulfur Radioisotopes
D015513:Oncogene Proteins; D018774:Oncogene Proteins v-erbA; D015682:Retroviridae Proteins, Oncogenic; D013462:Sulfur Radioisotopes