doi: 10.1128/mcb.10.11.5747-5752.1990.
Functional analysis of c-Myb protein in T-lymphocytic cell lines shows that it trans-activates the c-myc promoter
Affiliations
- PMID: 2233716
- PMCID: PMC361348
- DOI: 10.1128/mcb.10.11.5747-5752.1990
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Functional analysis of c-Myb protein in T-lymphocytic cell lines shows that it trans-activates the c-myc promoter
Mol Cell Biol.
1990 Nov.
Abstract
The function of c-Myb protein was revealed by transfecting an expression vector containing the entire c-Myb protein-coding sequence into the murine CTLL-2 T-cell line. Expressions of high levels of c-Myb protein did not alter the expression of several T-cell markers, c-fos mRNA expression, responses to interleukin-2, and growth characteristics of these cells. Interestingly, expression of the c-myc gene was drastically increased in this clone. Further, the c-myb expression plasmid, but not a frameshift mutant of c-myb, enhanced the expression of a hybrid construct of c-myc promoter linked to a reporter gene by 8- to 14-fold. These results demonstrate a role of c-Myb protein in c-myc gene expression.
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