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Volume 272, Number 34,
Issue of August 22, 1997
pp. 21137-21141
©1997 by The American Society for Biochemistry and Molecular Biology, Inc.
Modulation of Transcription Factor Sp1 by
cAMP-dependent Protein Kinase
(Received for publication, January 9, 1997, and in revised form, May 21, 1997)
Christian
Rohlff
,
Shakeel
Ahmad
,
Flavia
Borellini
,
Jun
Lei
and
Robert I.
Glazer
From the Georgetown University Medical Center, Department of
Pharmacology and the Lombardi Cancer Center,
Washington, D.C. 20007
Transcription factor Sp1 is a phosphoprotein
whose level and DNA binding activity are markedly increased in
doxorubicin-resistant HL-60 (HL-60/AR) leukemia cells. The
trans-activating and DNA binding properties of Sp1 in
HL-60/AR cells are stimulated by cAMP-dependent protein
kinase (PKA) and PKA agonists and inhibited by PKA antagonists as well
as by the PKA regulatory subunit. Reporter gene activity under the
control of the Sp1-dependent SV40 promoter is stimulated in
insect cells transiently expressing Sp1 and PKA, and the DNA binding
activity of recombinant Sp1 is activated by exogenous PKA in
vitro. These results indicate that Sp1 is a cAMP-responsive transcription factor and that Sp1-dependent genes may be
modulated through a cAMP-dependent signaling pathway.

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I. J. Gonzalez-Robayna, T. N. Alliston, P. Buse, G. L. Firestone, and J. S. Richards
Functional and Subcellular Changes in the A-Kinase-Signaling Pathway: Relation to Aromatase and Sgk Expression during the Transition of Granulosa Cells to Luteal Cells
Mol. Endocrinol.,
August 1, 1999;
13(8):
1318 - 1337.
[Abstract]
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R. Ahlgren, G. Suske, M. R. Waterman, and J. Lund
Role of Sp1 in cAMP-dependent Transcriptional Regulation of the Bovine CYP11A Gene
J. Biol. Chem.,
July 2, 1999;
274(27):
19422 - 19428.
[Abstract]
[Full Text]
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K. Su, M. D. Roos, X. Yang, I. Han, A. J. Paterson, and J. E. Kudlow
An N-terminal Region of Sp1 Targets Its Proteasome-dependent Degradation in Vitro
J. Biol. Chem.,
May 21, 1999;
274(21):
15194 - 15202.
[Abstract]
[Full Text]
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C. Li, F. B. Kraemer, T. E. Ahlborn, and J. Liu
Induction of Low Density Lipoprotein Receptor (LDLR) Transcription by Oncostatin M Is Mediated by the Extracellular Signal-regulated Kinase Signaling Pathway and the Repeat 3 Element of the LDLR Promoter
J. Biol. Chem.,
March 5, 1999;
274(10):
6747 - 6753.
[Abstract]
[Full Text]
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I. Alroy, L. Soussan, R. Seger, and Y. Yarden
Neu Differentiation Factor Stimulates Phosphorylation and Activation of the Sp1 Transcription Factor
Mol. Cell. Biol.,
March 1, 1999;
19(3):
1961 - 1972.
[Abstract]
[Full Text]
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A. R. Black, D. Jensen, S.-Y. Lin, and J. C. Azizkhan
Growth/Cell Cycle Regulation of Sp1 Phosphorylation
J. Biol. Chem.,
January 15, 1999;
274(3):
1207 - 1215.
[Abstract]
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M. Hauses, R. R. Tonjes, and M. Grez
The Transcription Factor Sp1 Regulates the Myeloid-specific Expression of the Human Hematopoietic Cell Kinase (HCK) Gene through Binding to Two Adjacent GC Boxes within the HCK Promoter-Proximal Region
J. Biol. Chem.,
November 27, 1998;
273(48):
31844 - 31852.
[Abstract]
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N. Dumais, B. Barbeau, M. Olivier, and M. J. Tremblay
Prostaglandin E2 Up-regulates HIV-1 Long Terminal Repeat-driven Gene Activity in T Cells via NF-kappa B-dependent and -Independent Signaling Pathways
J. Biol. Chem.,
October 16, 1998;
273(42):
27306 - 27314.
[Abstract]
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R. A. Rajakumar, S. Thamotharan, R. K. Menon, and S. U. Devaskar
Sp1 and Sp3 Regulate Transcriptional Activity of the Facilitative Glucose Transporter Isoform-3 Gene in Mammalian Neuroblasts and Trophoblasts
J. Biol. Chem.,
October 16, 1998;
273(42):
27474 - 27483.
[Abstract]
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Z.-Z. Hu, L. Zhuang, J. Meng, and M. L. Dufau
Transcriptional Regulation of the Generic Promoter III of the Rat Prolactin Receptor Gene by C/EBPbeta and Sp1
J. Biol. Chem.,
October 2, 1998;
273(40):
26225 - 26235.
[Abstract]
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J. B. Redell and B. L Tempel
Multiple Promoter Elements Interact to Control the Transcription of the Potassium Channel Gene, KCNJ2
J. Biol. Chem.,
August 28, 1998;
273(35):
22807 - 22818.
[Abstract]
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K. Yamada, T. Tanaka, K. Miyamoto, and T. Noguchi
Sp Family Members and Nuclear Factor-Y Cooperatively Stimulate Transcription from the Rat Pyruvate Kinase M Gene Distal Promoter Region via Their Direct Interactions
J. Biol. Chem.,
June 9, 2000;
275(24):
18129 - 18137.
[Abstract]
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S. Horie, H. Ishii, F. Matsumoto, M. Kusano, K. Kizaki, J. Matsuda, and M. Kazama
Acceleration of Thrombomodulin Gene Transcription by Retinoic Acid. RETINOIC ACID RECEPTORS AND Sp1 REGULATE THE PROMOTER ACTIVITY THROUGH INTERACTIONS WITH TWO DIFFERENT SEQUENCES IN THE 5'-FLANKING REGION OF HUMAN GENE
J. Biol. Chem.,
January 19, 2001;
276(4):
2440 - 2450.
[Abstract]
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A.-C. Poncelet and H. W. Schnaper
Sp1 and Smad Proteins Cooperate to Mediate Transforming Growth Factor-beta 1-induced alpha 2(I) Collagen Expression in Human Glomerular Mesangial Cells
J. Biol. Chem.,
March 2, 2001;
276(10):
6983 - 6992.
[Abstract]
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Y. Yang, C. K. Hwang, E. Junn, G. Lee, and M. M. Mouradian
ZIC2 and Sp3 Repress Sp1-induced Activation of the Human D1ADopamine Receptor Gene
J. Biol. Chem.,
December 1, 2000;
275(49):
38863 - 38869.
[Abstract]
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K.-Y. Kim, T. Rhim, I. Choi, and S.-S. Kim
N-Acetylcysteine Induces Cell Cycle Arrest in Hepatic Stellate Cells through Its Reducing Activity
J. Biol. Chem.,
October 26, 2001;
276(44):
40591 - 40598.
[Abstract]
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T. Fukada and N. K. Tonks
The Reciprocal Role of Egr-1 and Sp Family Proteins in Regulation of the PTP1B Promoter in Response to the p210 Bcr-Abl Oncoprotein-tyrosine Kinase
J. Biol. Chem.,
June 29, 2001;
276(27):
25512 - 25519.
[Abstract]
[Full Text]
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D. N. Douglas, V. W. Dolinsky, R. Lehner, and D. E. Vance
A Role for Sp1 in the Transcriptional Regulation of Hepatic Triacylglycerol Hydrolase in the Mouse
J. Biol. Chem.,
June 29, 2001;
276(27):
25621 - 25630.
[Abstract]
[Full Text]
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H. Sellak, X. Yang, X. Cao, T. Cornwell, G. A. Soff, and T. Lincoln
Sp1 Transcription Factor as a Molecular Target for Nitric Oxide- and Cyclic Nucleotide-Mediated Suppression of cGMP-Dependent Protein Kinase-I{alpha} Expression in Vascular Smooth Muscle Cells
Circ. Res.,
March 8, 2002;
90(4):
405 - 412.
[Abstract]
[Full Text]
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Copyright © 1997 by the American Society for Biochemistry and Molecular Biology.
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