Abstract:
:The c-Myb, A-Myb and B-Myb transcription factors have nearly identical DNA-binding domains, activate the same reporter gene constructs in animal cells, but have different biological roles. The Myb proteins are often coexpressed in the same cells, raising questions about whether they activate similar or distinct gene expression profiles, and whether they cooperate or compete in regulating the same promoters. Here, recombinant adenoviruses were used to express each protein in human mammary cells, and then microarray assays were used to assess global changes in gene expression. Each Myb protein induced a unique and specific set of changes, displaying activities far more complex than revealed by standard reporter gene assays. These results have important implications for the roles of various Myb proteins in normal and transformed human cells, for regulatory pathways that might modify their activities and for the importance of acquired mutations that may qualitatively alter their functions in tumors.
journal_name
Oncogenejournal_title
Oncogeneauthors
Rushton JJ,Davis LM,Lei W,Mo X,Leutz A,Ness SAdoi
10.1038/sj.onc.1206131subject
Has Abstractpub_date
2003-01-16 00:00:00pages
308-13issue
2eissn
0950-9232issn
1476-5594pii
1206131journal_volume
22pub_type
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