Abstract
Protooncogene c-fos is induced by activation of adenylate cyclase through the major cAMP-responsive element (CRE) centered at position -60 of the promoter. cAMP induction is followed by a rapid decrease in transcriptional rate, reminiscent of down-regulation after serum stimulation. Fos protein is known to negatively autoregulate serum-induced transcription of c-fos promoter, but whether Fos is responsible for down-regulation of cAMP-induced transcription is unclear. Here we show that Fos is unable to down-regulate CRE-mediated activation. We present evidence that the transcriptional antagonist CRE modulator (CREM) can bind to c-fos CRE and heterodimerize with activator CRE-binding protein, thereby blocking cAMP induction. Furthermore, expression of antisense CREM enhances c-fos basal and cAMP-induced transcription. CREM does not antagonize serum-induced transcription; therefore, we conclude that down-regulation of c-fos is exerted by different effectors, depending upon which signal transduction pathway is activated. We speculate that, by its c-fos down-regulatory function, CREM may act as an antioncogene.
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Selected References
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- Berkowitz L. A., Riabowol K. T., Gilman M. Z. Multiple sequence elements of a single functional class are required for cyclic AMP responsiveness of the mouse c-fos promoter. Mol Cell Biol. 1989 Oct;9(10):4272–4281. doi: 10.1128/mcb.9.10.4272. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Borrelli E., Hen R., Chambon P. Adenovirus-2 E1A products repress enhancer-induced stimulation of transcription. Nature. 1984 Dec 13;312(5995):608–612. doi: 10.1038/312608a0. [DOI] [PubMed] [Google Scholar]
- Bravo R., Neuberg M., Burckhardt J., Almendral J., Wallich R., Müller R. Involvement of common and cell type-specific pathways in c-fos gene control: stable induction of cAMP in macrophages. Cell. 1987 Jan 30;48(2):251–260. doi: 10.1016/0092-8674(87)90428-4. [DOI] [PubMed] [Google Scholar]
- Busch S. J., Sassone-Corsi P. Dimers, leucine zippers and DNA-binding domains. Trends Genet. 1990 Feb;6(2):36–40. doi: 10.1016/0168-9525(90)90071-d. [DOI] [PubMed] [Google Scholar]
- Fisch T. M., Prywes R., Simon M. C., Roeder R. G. Multiple sequence elements in the c-fos promoter mediate induction by cAMP. Genes Dev. 1989 Feb;3(2):198–211. doi: 10.1101/gad.3.2.198. [DOI] [PubMed] [Google Scholar]
- Foulkes N. S., Borrelli E., Sassone-Corsi P. CREM gene: use of alternative DNA-binding domains generates multiple antagonists of cAMP-induced transcription. Cell. 1991 Feb 22;64(4):739–749. doi: 10.1016/0092-8674(91)90503-q. [DOI] [PubMed] [Google Scholar]
- Gilman M. Z., Wilson R. N., Weinberg R. A. Multiple protein-binding sites in the 5'-flanking region regulate c-fos expression. Mol Cell Biol. 1986 Dec;6(12):4305–4316. doi: 10.1128/mcb.6.12.4305. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Gonzalez G. A., Yamamoto K. K., Fischer W. H., Karr D., Menzel P., Biggs W., 3rd, Vale W. W., Montminy M. R. A cluster of phosphorylation sites on the cyclic AMP-regulated nuclear factor CREB predicted by its sequence. Nature. 1989 Feb 23;337(6209):749–752. doi: 10.1038/337749a0. [DOI] [PubMed] [Google Scholar]
- Habener J. F. Cyclic AMP response element binding proteins: a cornucopia of transcription factors. Mol Endocrinol. 1990 Aug;4(8):1087–1094. doi: 10.1210/mend-4-8-1087. [DOI] [PubMed] [Google Scholar]
- Hai T. W., Liu F., Coukos W. J., Green M. R. Transcription factor ATF cDNA clones: an extensive family of leucine zipper proteins able to selectively form DNA-binding heterodimers. Genes Dev. 1989 Dec;3(12B):2083–2090. doi: 10.1101/gad.3.12b.2083. [DOI] [PubMed] [Google Scholar]
- Hoeffler J. P., Meyer T. E., Yun Y., Jameson J. L., Habener J. F. Cyclic AMP-responsive DNA-binding protein: structure based on a cloned placental cDNA. Science. 1988 Dec 9;242(4884):1430–1433. doi: 10.1126/science.2974179. [DOI] [PubMed] [Google Scholar]
- Hurst H. C., Jones N. C. Identification of factors that interact with the E1A-inducible adenovirus E3 promoter. Genes Dev. 1987 Dec;1(10):1132–1146. doi: 10.1101/gad.1.10.1132. [DOI] [PubMed] [Google Scholar]
- Landschulz W. H., Johnson P. F., McKnight S. L. The leucine zipper: a hypothetical structure common to a new class of DNA binding proteins. Science. 1988 Jun 24;240(4860):1759–1764. doi: 10.1126/science.3289117. [DOI] [PubMed] [Google Scholar]
- Lin Y. S., Green M. R. Interaction of a common cellular transcription factor, ATF, with regulatory elements in both E1a- and cyclic AMP-inducible promoters. Proc Natl Acad Sci U S A. 1988 May;85(10):3396–3400. doi: 10.1073/pnas.85.10.3396. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Mellon P. L., Clegg C. H., Correll L. A., McKnight G. S. Regulation of transcription by cyclic AMP-dependent protein kinase. Proc Natl Acad Sci U S A. 1989 Jul;86(13):4887–4891. doi: 10.1073/pnas.86.13.4887. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Norman C., Runswick M., Pollock R., Treisman R. Isolation and properties of cDNA clones encoding SRF, a transcription factor that binds to the c-fos serum response element. Cell. 1988 Dec 23;55(6):989–1003. doi: 10.1016/0092-8674(88)90244-9. [DOI] [PubMed] [Google Scholar]
- O'Shea E. K., Rutkowski R., Kim P. S. Evidence that the leucine zipper is a coiled coil. Science. 1989 Jan 27;243(4890):538–542. doi: 10.1126/science.2911757. [DOI] [PubMed] [Google Scholar]
- Prywes R., Roeder R. G. Inducible binding of a factor to the c-fos enhancer. Cell. 1986 Dec 5;47(5):777–784. doi: 10.1016/0092-8674(86)90520-9. [DOI] [PubMed] [Google Scholar]
- Sassone-Corsi P., Sisson J. C., Verma I. M. Transcriptional autoregulation of the proto-oncogene fos. Nature. 1988 Jul 28;334(6180):314–319. doi: 10.1038/334314a0. [DOI] [PubMed] [Google Scholar]
- Sassone-Corsi P., Visvader J., Ferland L., Mellon P. L., Verma I. M. Induction of proto-oncogene fos transcription through the adenylate cyclase pathway: characterization of a cAMP-responsive element. Genes Dev. 1988 Dec;2(12A):1529–1538. doi: 10.1101/gad.2.12a.1529. [DOI] [PubMed] [Google Scholar]
- Shaw P. E., Frasch S., Nordheim A. Repression of c-fos transcription is mediated through p67SRF bound to the SRE. EMBO J. 1989 Sep;8(9):2567–2574. doi: 10.1002/j.1460-2075.1989.tb08395.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Treisman R. Identification of a protein-binding site that mediates transcriptional response of the c-fos gene to serum factors. Cell. 1986 Aug 15;46(4):567–574. doi: 10.1016/0092-8674(86)90882-2. [DOI] [PubMed] [Google Scholar]
- Treisman R. Transient accumulation of c-fos RNA following serum stimulation requires a conserved 5' element and c-fos 3' sequences. Cell. 1985 Oct;42(3):889–902. doi: 10.1016/0092-8674(85)90285-5. [DOI] [PubMed] [Google Scholar]
- Verma I. M., Sassone-Corsi P. Proto-oncogene fos: complex but versatile regulation. Cell. 1987 Nov 20;51(4):513–514. doi: 10.1016/0092-8674(87)90115-2. [DOI] [PubMed] [Google Scholar]
- Webster K. A., Kedes L. The c-fos cyclic AMP-responsive element conveys constitutive expression to a tissue-specific promoter. Mol Cell Biol. 1990 May;10(5):2402–2406. doi: 10.1128/mcb.10.5.2402. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Webster N., Jin J. R., Green S., Hollis M., Chambon P. The yeast UASG is a transcriptional enhancer in human HeLa cells in the presence of the GAL4 trans-activator. Cell. 1988 Jan 29;52(2):169–178. doi: 10.1016/0092-8674(88)90505-3. [DOI] [PubMed] [Google Scholar]
- Yamamoto K. K., Gonzalez G. A., Biggs W. H., 3rd, Montminy M. R. Phosphorylation-induced binding and transcriptional efficacy of nuclear factor CREB. Nature. 1988 Aug 11;334(6182):494–498. doi: 10.1038/334494a0. [DOI] [PubMed] [Google Scholar]