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Myb protein binds to multiple sites in the human T cell lymphotropic virus type 1 long terminal repeat and
R Bosselut1, F Lim, P C Romond
1Laboratoire d'Oncologie Virale et Cellulaire, CNRS URA 1443, Institut Curie, Orsay, France.
Abstract:
The members of the c-myb proto-oncogene family encode sequence-specific transcriptional activators. In T cells, expression of c-myb and the related B-myb gene is induced following mitogenic stimulation. Using a purified recombinant protein, we report here that the human T cell lymphotropic virus type 1 (HTLV-1) LTR contains six specific binding sites for Myb. We also show that HTLV-1 LTR chloramphenicol acetyl transferase reporter plasmids are specifically transactivated by c-Myb. These data suggest a role for members of the Myb family as a link between transcriptional activation of the HTLV-1 LTR and T cell activation events.