AIMS/INTRODUCTION Given the high prevalence of diabetes and burn injuries worldwide, it is essential to dissect the underlying mechanism of delayed burn wound healing in diabetes patients, especially the high glucose-induced hypoxia-inducible factor 1 (HIF-1)-mediated transcription defects. MATERIALS AND METHODS Human umbilical vein endothelial cells were cultured with low or high concentrati...

CREB is a 43 kDa basic leucine zipper nuclear protein that is ubiquitously expressed and conserved from Drosophila to humans. Transcriptional activation by CREB is mediated through its interaction with a consensus octanucleotide sequence (TGANNTCA) termed the cyclic AMP response element or CRE, located in the promoter region of target genes. CREB constitutively binds to the CRE sequence as a he...

The cyclic AMP response element binding (CREB) protein has pleiotropic activities in physiologic processes. Due to its central position downstream of many growth signaling pathways CREB has the ability to influence cell survival, growth and differentiation of normal, but also of tumor cells suggesting an oncogenic potential of CREB. Indeed, increased CREB expression and activation is associated...

We have characterized cDNA clones representing mouse CREB (cyclic AMP responsive element binding protein) mRNA isoforms. These include CREB delta and CREB alpha, of which the rat and human homologues have been previously identified. Both encode proteins with CRE-binding activity and identical transactivation potential. The additional CREB mRNA isoforms potentially encode CREB related proteins. ...

The transcription factor CREB mediates diverse responses in the nervous system. It is not known how CREB induces specific patterns of gene expression in response to different extracellular stimuli. We find that Ca(2+) influx into neurons induces CREB phosphorylation at Ser133 and two additional sites, Ser142 and Ser143. While CREB Ser133 phosphorylation is induced by many stimuli, phosphorylati...

Chapter 5 CREB Glycosylation Moderates Phosphorylation-Dependent CREB Activity in Cultured Pancreatic Cell Lines. Summary. In vitro studies of CREB glycosylation found that the transactivation potential of CREB is inhibited by glycosylation. Whether O-GlcNAc glycosylation is sufficiently dynamic to play a role in cellular activity has been addressed by several previous studies performed in panc...

cAMP response element-binding protein (CREB), a transcription factor, has been shown to play a central role in memory formation, and its involvement in this process has been investigated using a wide range of animal models, from nematodes to higher animals. Various CREB mutant mice have been developed and investigated. Several types of mutant mice with loss of CREB function have impaired memory...

OBJECTIVE Migration of vascular smooth muscle cells (VSMCs) contributes to formation of vascular stenotic lesions such as atherosclerosis and restenosis after angioplasty. Previous studies have demonstrated that tumor necrosis factor-alpha (TNF-alpha) is a potent migration factor for VSMCs. cAMP-response element-binding protein (CREB) is the stimulus-induced transcription factor and activates t...

Genes regulated by cyclic AMP–response element-binding protein (CREB) have been reported to suppress apoptosis, induce cell proliferation, and mediate inflammation and tumor metastasis. However, it is not clear whether CREB is critically involved in lung carcinogenesis. We found that non– small cell lung cancer (NSCLC) cell lines exhibited elevated constitutive activity in CREB, in its immediat...

The activation of cAMP-responsive element-binding protein (CREB)-dependent gene expression is thought to be critical for the formation of different types of long-term memory. To explore the consequences of chronic enhancement of CREB function on spatial memory in mammals, we examined spatial navigation in bitransgenic mice that express in a regulated and restricted manner a constitutively activ...