rdf:type |
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lifeskim:mentions |
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pubmed:issue |
1
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pubmed:dateCreated |
2007-8-29
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pubmed:abstractText |
Thyroid transcription factor 1 (TTF-1) is required for morphogenesis of the fetal diencephalon. Previous reports showed that mice carrying a TTF-1 null mutation lacked normal development of the pituitary gland. In this study, a role for TTF-1 in the regulation of growth hormone and prolactin transcription was identified. In-situ hybridization analysis demonstrated TTF-1 mRNA in the growth hormone-producing cells and prolactin-producing cells of the rat anterior pituitary gland. In the GH3 pituitary cell line, we identified TTF-1 as a factor functionally regulating growth hormone and prolactin transcription. TTF-1 activated prolactin transcription, but inhibited growth hormone transcription. Inhibition and activation of growth hormone and prolactin transcription, respectively, by TTF-1 disappeared upon deletion of the TTF-1 binding motifs within the promoters of these genes. These data suggest that TTF-1 plays a regulatory role in the transcription of growth hormone and prolactin genes and may regulate transdifferentiation of cells expressing these two hormones.
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pubmed:language |
eng
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pubmed:journal |
|
pubmed:citationSubset |
IM
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pubmed:chemical |
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pubmed:status |
MEDLINE
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pubmed:month |
Oct
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pubmed:issn |
0006-291X
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pubmed:author |
|
pubmed:issnType |
Print
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pubmed:day |
12
|
pubmed:volume |
362
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pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
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pubmed:pagination |
193-9
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pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:17706597-Animals,
pubmed-meshheading:17706597-Cell Differentiation,
pubmed-meshheading:17706597-Growth Hormone,
pubmed-meshheading:17706597-In Situ Hybridization,
pubmed-meshheading:17706597-In Situ Hybridization, Fluorescence,
pubmed-meshheading:17706597-Male,
pubmed-meshheading:17706597-Nuclear Proteins,
pubmed-meshheading:17706597-Pituitary Gland,
pubmed-meshheading:17706597-Plasmids,
pubmed-meshheading:17706597-Prolactin,
pubmed-meshheading:17706597-Promoter Regions, Genetic,
pubmed-meshheading:17706597-Protein Binding,
pubmed-meshheading:17706597-Rats,
pubmed-meshheading:17706597-Rats, Sprague-Dawley,
pubmed-meshheading:17706597-Transcription, Genetic,
pubmed-meshheading:17706597-Transcription Factors
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pubmed:year |
2007
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pubmed:articleTitle |
TTF-1 regulates growth hormone and prolactin transcription in the anterior pituitary gland.
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pubmed:affiliation |
Department of Biological Sciences, College of Natural Sciences, University of Ulsan, Ulsan 680-749, Republic of Korea.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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