par Adam, Emmanuelle ;Kerkhofs, Pierre ;Mammerickx, Marc;Kettmann, Richard ;Burny, Arsène ;Droogmans, Louis ;Willems, Lucas
Référence Journal of virology, 68, 9, page (5845-5853)
Publication Publié, 1994
Article révisé par les pairs
Résumé : The TAR element (Tax-responsive element; also called TxRE) is a major determinant of the regulation of bovine leukemia virus (BLV) expression. In order to gain insight into the mechanisms of viral expression, complexes formed between proteins and the TAR enhancer DNA were analyzed by gel retardation assays. We report here that nuclear lysates from ex vivo-isolated B lymphocytes contain proteins that specifically bind to TAR. An antibody directed toward the cyclic AMP-responsive element binding (CREB) protein supershifted a complex (C1) present only in BLV-infected B lymphocytes. The CREB protein thus appears to be a major transcription factor involved in BLV expression in vivo.

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