Abstract:
:Chronic exposure of L6 myocytes to insulin/IGF-1 or glucose deprivation results in an increase in the level of brain-type glucose transporter (GLUT1) mRNA. We have investigated the effects of insulin and glucose deprivation on GLUT1 mRNA stability. The half-life of GLUT1 mRNA in control cells was 2-2.5 h. Insulin increased GLUT1 mRNA levels by 5- to 10-fold, and GLUT1 mRNA half-life and transcription by 2-fold. Glucose deprivation increased GLUT1 mRNA level by 2- to 4-fold and half-life by 2-fold. The effects of insulin and glucose deprivation on GLUT1 mRNA stability were additive. Cycloheximide partially blocked the induction of GLUT1 mRNA by insulin but not by glucose deprivation. GLUT1 mRNA was decreased to basal levels within 12h following insulin withdrawal or glucose refeeding. Cycloheximide did not block this de-induction, suggesting that insulin and glucose deprivation do not increase GLUT1 mRNA expression by inhibiting the synthesis of ribonucleases. These findings indicate that insulin/IGF-1 increases both GLUT1 mRNA stability and transcription by both protein synthesis-dependent and independent mechanisms, whereas glucose deprivation enhances GLUT1 mRNA stability by mechanisms independent of de novo protein synthesis.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Maher F,Harrison LCdoi
10.1016/0006-291x(90)91378-6subject
Has Abstractpub_date
1990-08-31 00:00:00pages
210-5issue
1eissn
0006-291Xissn
1090-2104pii
0006-291X(90)91378-6journal_volume
171pub_type
杂志文章abstract::There is increasing evidence for the presence of cancer stem-like progenitors in malignant brain tumors. This subpopulation of progenitor cells, the so-called "cancer stem cells (CSCs)", may play a pivotal role in brain tumor initiation, growth, and recurrence. Here we describe the establishment of one permanent brain...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2007.07.037
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1999.0662
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
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更新日期:2011-01-07 00:00:00
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1998.9696
更新日期:1998-12-18 00:00:00
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
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更新日期:2020-11-05 00:00:00
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
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更新日期:2013-03-01 00:00:00
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(87)91519-1
更新日期:1987-02-13 00:00:00
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
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更新日期:2017-08-26 00:00:00
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2006.08.017
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
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更新日期:2000-04-13 00:00:00
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
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更新日期:2006-09-08 00:00:00
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(84)90380-2
更新日期:1984-08-30 00:00:00
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1993.2565
更新日期:1993-12-15 00:00:00
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(86)90920-4
更新日期:1986-04-14 00:00:00
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
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更新日期:2012-09-28 00:00:00
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2016.08.081
更新日期:2016-09-23 00:00:00
abstract::Transcription factor NF-kappaB has both pro-apoptotic and anti-apoptotic properties depending on the cell type. Its role in the intestinal epithelial cell has not been well elucidated. Trefoil factor 3 (TFF3) is an anti-apoptotic peptide secreted by intestinal goblet cells. Here we show that TFF3 activated NF-kappaB p...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2000.3176
更新日期:2000-08-11 00:00:00
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1996.1553
更新日期:1996-10-14 00:00:00