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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2004-1-12
pubmed:abstractText
ATBF1 was first discovered as a suppressor of AFP expression in hepatocytes. It is present in brain, adult liver, lung, and gastro-intestinal tract. Recently, it has been reported that ATBF1 regulates myoblastic differentiation and interacts with v-Myb in regulation of its transactivation. Using the yeast two-hybrid system, we searched for protein-protein interactions to uncover new functions for ATBF1. We present here experimental evidence that ATBF1 is a new regulatory factor for STAT3-mediated signal transduction through its interaction with PIAS3. PIAS3 was thus identified as an ATBF1-binding protein. In co-transfection experiments, the full-length ATBF1 was found to form complexes with PIAS3 in Hep G2 cells. In the luciferase assay, ATBF1 was found to have no influence on STAT3 signaling induced by IL-6 stimulation, but it did synergistically enhance PIAS3 inhibition of activated STAT3. In conclusion, ATBF1 can suppress the IL-6-mediated cellular response by acting together with PIAS3.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0006-291X
pubmed:author
pubmed:issnType
Print
pubmed:day
30
pubmed:volume
314
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
97-103
pubmed:dateRevised
2008-9-13
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
ATBF1 enhances the suppression of STAT3 signaling by interaction with PIAS3.
pubmed:affiliation
Department of Internal Medicine and Bioregulation, Nagoya City University Graduate School of Medical Sciences 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Japan.
pubmed:publicationType
Journal Article