Abstract:
:We examined the effects of growth hormone (GH), prolactin (PRL) and insulin-like growth factor-I (IGF-I) on DNA synthesis, and insulin-like growth factor binding protein 3 (IGFBP-3) gene expression, in a rat beta-cell line INS-1. GH and PRL were equally effective in increasing DNA synthesis and IGFBP-3 gene expression. IGF-I also stimulated DNA synthesis, but its effect on IGFBP-3 mRNA accumulation was moderate. The GH activities in this cell line were not mediated by IGF-I production: (1) no IGF-I mRNA could be detected in poly-A RNA preparation, and IGF-I level was very low; (2) neither IGF-I mRNA nor the protein, were increased upon GH treatment; (3) DNA synthesis stimulatory activities of GH and IGF-I were additive; (4) the GH-induced IGFBP-3 mRNA increase was not inhibited by cycloheximide treatment. Thus, the activities of GH in this cell line are not mediated by a protein synthesis.
journal_name
Mol Cell Endocrinoljournal_title
Molecular and cellular endocrinologyauthors
De W,Bréant B,Czernichow P,Asfari Mdoi
10.1016/0303-7207(95)03640-ssubject
Has Abstractpub_date
1995-10-30 00:00:00pages
43-50issue
1-2eissn
0303-7207issn
1872-8057journal_volume
114pub_type
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journal_title:Molecular and cellular endocrinology
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journal_title:Molecular and cellular endocrinology
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更新日期:2011-04-10 00:00:00
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journal_title:Molecular and cellular endocrinology
pub_type: 杂志文章
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更新日期:1998-02-01 00:00:00
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更新日期:2003-03-28 00:00:00
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journal_title:Molecular and cellular endocrinology
pub_type: 杂志文章
doi:10.1016/0303-7207(84)90110-2
更新日期:1984-12-01 00:00:00
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journal_title:Molecular and cellular endocrinology
pub_type: 杂志文章
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更新日期:1976-12-01 00:00:00
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journal_title:Molecular and cellular endocrinology
pub_type: 杂志文章
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更新日期:1992-01-01 00:00:00
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journal_title:Molecular and cellular endocrinology
pub_type: 杂志文章
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更新日期:1985-06-01 00:00:00
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journal_title:Molecular and cellular endocrinology
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更新日期:2007-01-02 00:00:00
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journal_title:Molecular and cellular endocrinology
pub_type: 杂志文章
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journal_title:Molecular and cellular endocrinology
pub_type: 杂志文章
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更新日期:1994-10-01 00:00:00
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journal_title:Molecular and cellular endocrinology
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更新日期:2010-03-05 00:00:00
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journal_title:Molecular and cellular endocrinology
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更新日期:2015-11-05 00:00:00
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journal_title:Molecular and cellular endocrinology
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更新日期:2014-01-25 00:00:00
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journal_title:Molecular and cellular endocrinology
pub_type: 杂志文章,评审
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更新日期:2009-03-05 00:00:00