v-erbA oncogene function in neoplasia correlates with its ability to repress retinoic acid receptor action.
The v-erbA oncoprotein of avian erythroblastosis virus is an aberrant version of a thyroid hormone receptor and functions in neoplasia by blocking erythroid differentiation and by modifying the growth properties of fibroblasts. v-erbA has been proposed to represent a novel dominant negative oncogene, acting in the cancer cell by interfering with the actions of its normal cell homologs, the thyroid hormone receptors. We report here that v-erbA can actually interfere with the actions of a variety of members of the steroid/retinoid receptor family and that the ability of v-erbA to act in neoplasia best correlates not with suppression of c-erbA action, but with interference with the retinoic acid receptor response. We suggest that v-erbA may act in neoplasia by promiscuously interfering with a retinoid-mediated differentiation process.[1]References
- v-erbA oncogene function in neoplasia correlates with its ability to repress retinoic acid receptor action. Sharif, M., Privalsky, M.L. Cell (1991) [Pubmed]
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