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CEBPB — PTGS2
Text-mined interactions from Literome
Wadleigh et al., J Biol Chem 2000
:
Overexpression of c-Jun, C/EBPbeta, and C/EBPdelta enhances induction of the COX-2 reporter, while overexpression of cyclic AMP-response element binding protein or `` dominant negative ''
C/EBPbeta represses
COX-2 induction
Harrison et al., J Bone Miner Res 2000
:
Overexpression of
p20C/EBPbeta , a dominant negative inhibitor of C/EBP function,
blocked the stimulation of
PGHS-2 promoter activity by IL-1 and blocked the ability of overexpressed C/EBPbeta and C/EBPdelta to increase basal and IL-1 stimulated promoter activity ... These results suggest an essential
role for
C/EBPbeta and C/EBPdelta in the induction of
PGHS-2 gene expression by IL-1 in osteoblastic cells
Ogasawara et al., J Biol Chem 2001
:
These data suggest that
C/EBP beta , AP-1, and CREB
play crucial roles in the shear stress induced
cox-2 expression in osteoblasts
Wang et al., Mol Pharmacol 2001
(Inflammation) :
Because C/EBP beta, a basic leucine zipper transcription factor, can be activated via a PKC alpha/mitogen activated protein kinase pathway and can influence COX-2 expression, we examined whether
C/EBP beta is
involved in TPA induced epidermal
COX-2 expression
Gagliardi et al., Oncogene 2001
(Cell Transformation, Viral) :
The induction of the
Cox-2 gene ( CEF-147 ) was also
reduced by
Delta184-C/EBPbeta
Gorgoni et al., J Biol Chem 2001
:
The transcription factor
C/EBPbeta is
essential for inducible expression of the
cox-2 gene in macrophages but not in fibroblasts ... The obligatory
role of
C/EBPbeta in
COX-2 expression appeared to be mediated exclusively by the C/EBP element located at positions -138/-130 of the murine cox-2 promoter, and did not involve altered activity at the level of the other promoter elements described previously ( the -402/-392 NF-kappaB site, the -59/-48 CRE/E box element, and a potential second C/EBP site located at positions -93/-85 )
Cho et al., Mol Pharmacol 2003
:
These results demonstrate that C2 increases
C/EBP beta mediated
COX-2 induction by LPS and that the pathway of JNK1 but not ERK1/2 is responsible for C/EBP beta activation involving activator protein-1 mediated enhanced C/EBP beta expression
Tamura et al., J Mol Endocrinol 2003
(Endometrial Neoplasms) :
Employing electrophoretic mobility shift assays, we demonstrated that increased functional binding of CCAAT/enhancer binding protein ( C/EBP)alpha, C/EBPbeta and upstream stimulatory factor-2 to the CRE and C/EBPalpha and
C/EBPbeta to the NF-IL6 site were, at least in part,
responsible for MECM induced
COX-2 expression in ESC ... Moreover, overexpression of C/EBPalpha and
C/EBPbeta significantly
induced COX-2 promoter activity in ESC ... Collectively, these results suggest that the basal and MECM induced transcription of the
COX-2 gene in ESC is
regulated through a combination of the CRE and the NF-IL6 site by functional interactions of C/EBPalpha and
C/EBPbeta
Joo et al., J Biol Chem 2004
:
Concomitantly,
C/EBP-beta becomes acetylated, and expression of the
COX-2 gene
increases
Chen et al., Mol Biol Cell 2005
:
MG132 induced DNA binding activity of C/EBPdelta, but not
C/EBPbeta was regulated by p38, PI3K, Src, and protein kinase C. Small interfering RNA of C/EBPdelta
suppressed COX-2 expression, further strengthening the role of C/EBPdelta in COX-2 gene transcription
Lee et al., Mol Hum Reprod 2005
:
The
role of
CCAAT/enhancer binding protein beta in the transcriptional regulation of
COX-2 in human amnion ... This suggests that although
C/EBPbeta plays an essential constitutive role in the expression of
COX-2 , C/EBPbeta may not be directly involved in its regulation in association with human labour
Regalo et al., J Pathol 2006
(Cell Transformation, Neoplastic...) :
We also assessed the
effect of
C/EBPbeta on
COX-2 expression ... Using GC cell lines we show that
C/EBPbeta can
regulate the expression of endogenous
COX-2 and transactivate the promoter of the COX-2 gene, depending on its methylation status
Wu et al., Prostaglandins Other Lipid Mediat 2007
:
Salicylate
inhibits COX-2 transcriptional activation in quiescent cells but not in serum-driven proliferating cells by blocking
C/EBPbeta DNA binding
He et al., Biochem J 2008
:
These results demonstrate that LPA
induces COX-2 expression and PGE ( 2 ) production through EGFR transactivation independent activation of transcriptional factors NF-kappaB and c-Jun, and EGFR transactivation dependent activation of
C/EBPbeta in HBEpCs
Healy et al., Am J Physiol Cell Physiol 2008
:
Individual gene knockdown experiments demonstrate the direct regulation of C/EBPbeta expression by c-Jun, and the critical
roles of both c-Jun and
C/EBPbeta in shear induced
COX-2 synthesis
Dougherty et al., Clin Cancer Res 2008
(Colonic Neoplasms...) :
Furthermore, in flat ACF, EGFR blockade decreased the up-regulation of c-Jun, FosB, phosphorylated active signal transducers and activators of transcription 3, and
CCAAT/enhancer binding protein-beta , potential
regulators of cyclin D1 and
Cox-2
Sun et al., Am J Physiol Cell Physiol 2008
:
COX-2 gene promoter deletion and mutation studies indicate a
role of
CCAAT/enhancer binding protein-beta ( C/EBP-beta ) in CT-induced
COX-2 gene expression ... Our data suggest that the interaction between GR and
C/EBP-beta contributes to elevated
COX-2 gene transcription by CT in cardiomyocytes
Choi et al., Exp Brain Res 2009
(Brain Ischemia) :
These results suggest that RA can reduce ischemia induced cerebral injury by an anti-inflammatory action, which may be effected via inhibition of
C/EBPbeta mediated
COX-2 induction
Pall et al., EMBO J 1997
:
Since a reduction in
C/EBP-beta expression does not
affect the level of the ovulatory mediator
prostaglandin endoperoxide synthase-2 ( PGS-2 ), these findings support the view of C/EBP-beta as an important factor in the ovulatory process and highlight a C/EBP-beta dependent and PGS-2 independent pathway that takes part in regulation of ovulation