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. 1993 Mar;13(3):1854–1862. doi: 10.1128/mcb.13.3.1854

A nuclear factor for interleukin-6 expression (NF-IL6) and the glucocorticoid receptor synergistically activate transcription of the rat alpha 1-acid glycoprotein gene via direct protein-protein interaction.

Y Nishio 1, H Isshiki 1, T Kishimoto 1, S Akira 1
PMCID: PMC359498  PMID: 8441418

Abstract

The acute-phase reaction is accompanied by an increase in a variety of serum proteins, named acute-phase proteins. The synthesis of these proteins is synergistically controlled by glucocorticoids and inflammatory cytokines such as interleukin-1 (IL-1), IL-6, and tumor necrosis factor alpha. Recently, we have cloned nuclear factor-IL-6 (NF-IL6), a transcription factor that activates the IL-6 gene, and have demonstrated its involvement in the expression of acute-phase-protein genes. We report here an analysis of the molecular mechanisms by which inflammatory cytokines and glucocorticoid act synergistically to activate expression of the rat alpha 1-acid glycoprotein (AGP) gene. We found that NF-IL6 and ligand-activated rat glucocorticoid receptor acted synergistically to transactivate the AGP gene and that maximal transcriptional activation of the AGP gene required expression of both intact NF-IL6 and rat glucocorticoid receptor. Surprisingly, however, transcriptional synergism was still observed even when one of the two factors lacked either its DNA-binding or transcriptional-activation function. We present evidence for a direct protein-protein interaction between these two distinct transcription factors and propose that this may be responsible for the synergistic activation of the rat AGP gene.

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Selected References

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  1. Akira S., Hirano T., Taga T., Kishimoto T. Biology of multifunctional cytokines: IL 6 and related molecules (IL 1 and TNF). FASEB J. 1990 Aug;4(11):2860–2867. [PubMed] [Google Scholar]
  2. Akira S., Isshiki H., Sugita T., Tanabe O., Kinoshita S., Nishio Y., Nakajima T., Hirano T., Kishimoto T. A nuclear factor for IL-6 expression (NF-IL6) is a member of a C/EBP family. EMBO J. 1990 Jun;9(6):1897–1906. doi: 10.1002/j.1460-2075.1990.tb08316.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Andus T., Geiger T., Hirano T., Kishimoto T., Heinrich P. C. Action of recombinant human interleukin 6, interleukin 1 beta and tumor necrosis factor alpha on the mRNA induction of acute-phase proteins. Eur J Immunol. 1988 May;18(5):739–746. doi: 10.1002/eji.1830180513. [DOI] [PubMed] [Google Scholar]
  4. Baumann H., Firestone G. L., Burgess T. L., Gross K. W., Yamamoto K. R., Held W. A. Dexamethasone regulation of alpha 1-acid glycoprotein and other acute phase reactants in rat liver and hepatoma cells. J Biol Chem. 1983 Jan 10;258(1):563–570. [PubMed] [Google Scholar]
  5. Baumann H., Gauldie J. Regulation of hepatic acute phase plasma protein genes by hepatocyte stimulating factors and other mediators of inflammation. Mol Biol Med. 1990 Apr;7(2):147–159. [PubMed] [Google Scholar]
  6. Baumann H., Jahreis G. P., Morella K. K. Interaction of cytokine- and glucocorticoid-response elements of acute-phase plasma protein genes. Importance of glucocorticoid receptor level and cell type for regulation of the elements from rat alpha 1-acid glycoprotein and beta-fibrinogen genes. J Biol Chem. 1990 Dec 25;265(36):22275–22281. [PubMed] [Google Scholar]
  7. Baumann H., Maquat L. E. Localization of DNA sequences involved in dexamethasone-dependent expression of the rat alpha 1-acid glycoprotein gene. Mol Cell Biol. 1986 Jul;6(7):2551–2561. doi: 10.1128/mcb.6.7.2551. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Bengal E., Ransone L., Scharfmann R., Dwarki V. J., Tapscott S. J., Weintraub H., Verma I. M. Functional antagonism between c-Jun and MyoD proteins: a direct physical association. Cell. 1992 Feb 7;68(3):507–519. doi: 10.1016/0092-8674(92)90187-h. [DOI] [PubMed] [Google Scholar]
  9. Brasier A. R., Ron D., Tate J. E., Habener J. F. A family of constitutive C/EBP-like DNA binding proteins attenuate the IL-1 alpha induced, NF kappa B mediated trans-activation of the angiotensinogen gene acute-phase response element. EMBO J. 1990 Dec;9(12):3933–3944. doi: 10.1002/j.1460-2075.1990.tb07614.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Brechner T., Hocke G., Goel A., Fey G. H. Interleukin 6 response factor binds co-operatively at two adjacent sites in the promoter upstream region of the rat alpha 2-macroglobulin gene. Mol Biol Med. 1991 Apr;8(2):267–285. [PubMed] [Google Scholar]
  11. Cao Z., Umek R. M., McKnight S. L. Regulated expression of three C/EBP isoforms during adipose conversion of 3T3-L1 cells. Genes Dev. 1991 Sep;5(9):1538–1552. doi: 10.1101/gad.5.9.1538. [DOI] [PubMed] [Google Scholar]
  12. Chang C. J., Chen T. T., Lei H. Y., Chen D. S., Lee S. C. Molecular cloning of a transcription factor, AGP/EBP, that belongs to members of the C/EBP family. Mol Cell Biol. 1990 Dec;10(12):6642–6653. doi: 10.1128/mcb.10.12.6642. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Courey A. J., Holtzman D. A., Jackson S. P., Tjian R. Synergistic activation by the glutamine-rich domains of human transcription factor Sp1. Cell. 1989 Dec 1;59(5):827–836. doi: 10.1016/0092-8674(89)90606-5. [DOI] [PubMed] [Google Scholar]
  14. Descombes P., Chojkier M., Lichtsteiner S., Falvey E., Schibler U. LAP, a novel member of the C/EBP gene family, encodes a liver-enriched transcriptional activator protein. Genes Dev. 1990 Sep;4(9):1541–1551. doi: 10.1101/gad.4.9.1541. [DOI] [PubMed] [Google Scholar]
  15. Diamond M. I., Miner J. N., Yoshinaga S. K., Yamamoto K. R. Transcription factor interactions: selectors of positive or negative regulation from a single DNA element. Science. 1990 Sep 14;249(4974):1266–1272. doi: 10.1126/science.2119054. [DOI] [PubMed] [Google Scholar]
  16. Ganter U., Arcone R., Toniatti C., Morrone G., Ciliberto G. Dual control of C-reactive protein gene expression by interleukin-1 and interleukin-6. EMBO J. 1989 Dec 1;8(12):3773–3779. doi: 10.1002/j.1460-2075.1989.tb08554.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  17. Geiger T., Andus T., Klapproth J., Hirano T., Kishimoto T., Heinrich P. C. Induction of rat acute-phase proteins by interleukin 6 in vivo. Eur J Immunol. 1988 May;18(5):717–721. doi: 10.1002/eji.1830180510. [DOI] [PubMed] [Google Scholar]
  18. Godowski P. J., Rusconi S., Miesfeld R., Yamamoto K. R. Glucocorticoid receptor mutants that are constitutive activators of transcriptional enhancement. Nature. 1987 Jan 22;325(6102):365–368. doi: 10.1038/325365a0. [DOI] [PubMed] [Google Scholar]
  19. Gorman C. M., Moffat L. F., Howard B. H. Recombinant genomes which express chloramphenicol acetyltransferase in mammalian cells. Mol Cell Biol. 1982 Sep;2(9):1044–1051. doi: 10.1128/mcb.2.9.1044. [DOI] [PMC free article] [PubMed] [Google Scholar]
  20. Hattori M., Abraham L. J., Northemann W., Fey G. H. Acute-phase reaction induces a specific complex between hepatic nuclear proteins and the interleukin 6 response element of the rat alpha 2-macroglobulin gene. Proc Natl Acad Sci U S A. 1990 Mar;87(6):2364–2368. doi: 10.1073/pnas.87.6.2364. [DOI] [PMC free article] [PubMed] [Google Scholar]
  21. Hocke G. M., Barry D., Fey G. H. Synergistic action of interleukin-6 and glucocorticoids is mediated by the interleukin-6 response element of the rat alpha 2 macroglobulin gene. Mol Cell Biol. 1992 May;12(5):2282–2294. doi: 10.1128/mcb.12.5.2282. [DOI] [PMC free article] [PubMed] [Google Scholar]
  22. Hollenberg S. M., Giguere V., Segui P., Evans R. M. Colocalization of DNA-binding and transcriptional activation functions in the human glucocorticoid receptor. Cell. 1987 Apr 10;49(1):39–46. doi: 10.1016/0092-8674(87)90753-7. [DOI] [PubMed] [Google Scholar]
  23. Isshiki H., Akira S., Sugita T., Nishio Y., Hashimoto S., Pawlowski T., Suematsu S., Kishimoto T. Reciprocal expression of NF-IL6 and C/EBP in hepatocytes: possible involvement of NF-IL6 in acute phase protein gene expression. New Biol. 1991 Jan;3(1):63–70. [PubMed] [Google Scholar]
  24. Isshiki H., Akira S., Tanabe O., Nakajima T., Shimamoto T., Hirano T., Kishimoto T. Constitutive and interleukin-1 (IL-1)-inducible factors interact with the IL-1-responsive element in the IL-6 gene. Mol Cell Biol. 1990 Jun;10(6):2757–2764. doi: 10.1128/mcb.10.6.2757. [DOI] [PMC free article] [PubMed] [Google Scholar]
  25. Jonat C., Rahmsdorf H. J., Park K. K., Cato A. C., Gebel S., Ponta H., Herrlich P. Antitumor promotion and antiinflammation: down-modulation of AP-1 (Fos/Jun) activity by glucocorticoid hormone. Cell. 1990 Sep 21;62(6):1189–1204. doi: 10.1016/0092-8674(90)90395-u. [DOI] [PubMed] [Google Scholar]
  26. Klein E. S., DiLorenzo D., Posseckert G., Beato M., Ringold G. M. Sequences downstream of the glucocorticoid regulatory element mediate cycloheximide inhibition of steroid induced expression from the rat alpha 1-acid glycoprotein promoter: evidence for a labile transcription factor. Mol Endocrinol. 1988 Dec;2(12):1343–1351. doi: 10.1210/mend-2-12-1343. [DOI] [PubMed] [Google Scholar]
  27. Kushner I. The phenomenon of the acute phase response. Ann N Y Acad Sci. 1982;389:39–48. doi: 10.1111/j.1749-6632.1982.tb22124.x. [DOI] [PubMed] [Google Scholar]
  28. Landschulz W. H., Johnson P. F., McKnight S. L. The DNA binding domain of the rat liver nuclear protein C/EBP is bipartite. Science. 1989 Mar 31;243(4899):1681–1688. doi: 10.1126/science.2494700. [DOI] [PubMed] [Google Scholar]
  29. LeClair K. P., Blanar M. A., Sharp P. A. The p50 subunit of NF-kappa B associates with the NF-IL6 transcription factor. Proc Natl Acad Sci U S A. 1992 Sep 1;89(17):8145–8149. doi: 10.1073/pnas.89.17.8145. [DOI] [PMC free article] [PubMed] [Google Scholar]
  30. Levine M., Manley J. L. Transcriptional repression of eukaryotic promoters. Cell. 1989 Nov 3;59(3):405–408. doi: 10.1016/0092-8674(89)90024-x. [DOI] [PubMed] [Google Scholar]
  31. Macgregor P. F., Abate C., Curran T. Direct cloning of leucine zipper proteins: Jun binds cooperatively to the CRE with CRE-BP1. Oncogene. 1990 Apr;5(4):451–458. [PubMed] [Google Scholar]
  32. Maina C. V., Riggs P. D., Grandea A. G., 3rd, Slatko B. E., Moran L. S., Tagliamonte J. A., McReynolds L. A., Guan C. D. An Escherichia coli vector to express and purify foreign proteins by fusion to and separation from maltose-binding protein. Gene. 1988 Dec 30;74(2):365–373. doi: 10.1016/0378-1119(88)90170-9. [DOI] [PubMed] [Google Scholar]
  33. Natsuka S., Isshiki H., Akira S., Kishimoto T. Augmentation of haptoglobin production in Hep3B cell line by a nuclear factor NF-IL6. FEBS Lett. 1991 Oct 7;291(1):58–62. doi: 10.1016/0014-5793(91)81103-f. [DOI] [PubMed] [Google Scholar]
  34. Poli V., Cortese R. Interleukin 6 induces a liver-specific nuclear protein that binds to the promoter of acute-phase genes. Proc Natl Acad Sci U S A. 1989 Nov;86(21):8202–8206. doi: 10.1073/pnas.86.21.8202. [DOI] [PMC free article] [PubMed] [Google Scholar]
  35. Poli V., Mancini F. P., Cortese R. IL-6DBP, a nuclear protein involved in interleukin-6 signal transduction, defines a new family of leucine zipper proteins related to C/EBP. Cell. 1990 Nov 2;63(3):643–653. doi: 10.1016/0092-8674(90)90459-r. [DOI] [PubMed] [Google Scholar]
  36. Ratajczak T., Williams P. M., DiLorenzo D., Ringold G. M. Multiple elements within the glucocorticoid regulatory unit of the rat alpha 1-acid glycoprotein gene are recognition sites for C/EBP. J Biol Chem. 1992 Jun 5;267(16):11111–11119. [PubMed] [Google Scholar]
  37. Schena M., Freedman L. P., Yamamoto K. R. Mutations in the glucocorticoid receptor zinc finger region that distinguish interdigitated DNA binding and transcriptional enhancement activities. Genes Dev. 1989 Oct;3(10):1590–1601. doi: 10.1101/gad.3.10.1590. [DOI] [PubMed] [Google Scholar]
  38. Schüle R., Rangarajan P., Kliewer S., Ransone L. J., Bolado J., Yang N., Verma I. M., Evans R. M. Functional antagonism between oncoprotein c-Jun and the glucocorticoid receptor. Cell. 1990 Sep 21;62(6):1217–1226. doi: 10.1016/0092-8674(90)90397-w. [DOI] [PubMed] [Google Scholar]
  39. Wegner M., Cao Z., Rosenfeld M. G. Calcium-regulated phosphorylation within the leucine zipper of C/EBP beta. Science. 1992 Apr 17;256(5055):370–373. doi: 10.1126/science.256.5055.370. [DOI] [PubMed] [Google Scholar]
  40. Williams P., Ratajczak T., Lee S. C., Ringold G. M. AGP/EBP(LAP) expressed in rat hepatoma cells interacts with multiple promoter sites and is necessary for maximal glucocorticoid induction of the rat alpha-1 acid glycoprotein gene. Mol Cell Biol. 1991 Oct;11(10):4959–4965. doi: 10.1128/mcb.11.10.4959. [DOI] [PMC free article] [PubMed] [Google Scholar]
  41. Williams S. C., Cantwell C. A., Johnson P. F. A family of C/EBP-related proteins capable of forming covalently linked leucine zipper dimers in vitro. Genes Dev. 1991 Sep;5(9):1553–1567. doi: 10.1101/gad.5.9.1553. [DOI] [PubMed] [Google Scholar]
  42. Won K. A., Baumann H. The cytokine response element of the rat alpha 1-acid glycoprotein gene is a complex of several interacting regulatory sequences. Mol Cell Biol. 1990 Aug;10(8):3965–3978. doi: 10.1128/mcb.10.8.3965. [DOI] [PMC free article] [PubMed] [Google Scholar]
  43. Yang-Yen H. F., Chambard J. C., Sun Y. L., Smeal T., Schmidt T. J., Drouin J., Karin M. Transcriptional interference between c-Jun and the glucocorticoid receptor: mutual inhibition of DNA binding due to direct protein-protein interaction. Cell. 1990 Sep 21;62(6):1205–1215. doi: 10.1016/0092-8674(90)90396-v. [DOI] [PubMed] [Google Scholar]
  44. Yang-Yen H. F., Zhang X. K., Graupner G., Tzukerman M., Sakamoto B., Karin M., Pfahl M. Antagonism between retinoic acid receptors and AP-1: implications for tumor promotion and inflammation. New Biol. 1991 Dec;3(12):1206–1219. [PubMed] [Google Scholar]
  45. di Guan C., Li P., Riggs P. D., Inouye H. Vectors that facilitate the expression and purification of foreign peptides in Escherichia coli by fusion to maltose-binding protein. Gene. 1988 Jul 15;67(1):21–30. doi: 10.1016/0378-1119(88)90004-2. [DOI] [PubMed] [Google Scholar]

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