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. 1995 Oct;15(10):5444–5452. doi: 10.1128/mcb.15.10.5444

Association of p107 with Sp1: genetically separable regions of p107 are involved in regulation of E2F- and Sp1-dependent transcription.

P K Datta 1, P Raychaudhuri 1, S Bagchi 1
PMCID: PMC230794  PMID: 7565695

Abstract

The retinoblastoma-related protein p107 has been shown to be a regulator of the transcription factor E2F. p107 associates with E2F via its pocket region and represses E2F-dependent transcription. In this study, we provide evidence for a novel interaction between p107 and the transcription factor Sp1. We show that p107 can be found endogenously associated with Sp1 in the extracts of several different cell lines. Moreover, in transient transfection assays, expression of p107 represses Sp1-dependent transcription. This repression of Sp1-dependent transcription does not require the DNA-binding domain of Sp1. Transcription driven by a chimeric protein containing the Ga14 DNA-binding domain and the Sp1 activation domains is inhibited by p107. Interestingly, unlike the repression of E2F-dependent transcription, the repression of Sp1-dependent transcription does not depend on an intact pocket region. We show that distinct regions of p107 are involved in the control of Sp1 and E2F.

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Selected References

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  1. Azizkhan J. C., Jensen D. E., Pierce A. J., Wade M. Transcription from TATA-less promoters: dihydrofolate reductase as a model. Crit Rev Eukaryot Gene Expr. 1993;3(4):229–254. [PubMed] [Google Scholar]
  2. Bagchi S., Raychaudhuri P., Nevins J. R. Adenovirus E1A proteins can dissociate heteromeric complexes involving the E2F transcription factor: a novel mechanism for E1A trans-activation. Cell. 1990 Aug 24;62(4):659–669. doi: 10.1016/0092-8674(90)90112-r. [DOI] [PubMed] [Google Scholar]
  3. Beijersbergen R. L., Kerkhoven R. M., Zhu L., Carlée L., Voorhoeve P. M., Bernards R. E2F-4, a new member of the E2F gene family, has oncogenic activity and associates with p107 in vivo. Genes Dev. 1994 Nov 15;8(22):2680–2690. doi: 10.1101/gad.8.22.2680. [DOI] [PubMed] [Google Scholar]
  4. Berg J. M. Sp1 and the subfamily of zinc finger proteins with guanine-rich binding sites. Proc Natl Acad Sci U S A. 1992 Dec 1;89(23):11109–11110. doi: 10.1073/pnas.89.23.11109. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Cao L., Faha B., Dembski M., Tsai L. H., Harlow E., Dyson N. Independent binding of the retinoblastoma protein and p107 to the transcription factor E2F. Nature. 1992 Jan 9;355(6356):176–179. doi: 10.1038/355176a0. [DOI] [PubMed] [Google Scholar]
  6. Chellappan S. P., Hiebert S., Mudryj M., Horowitz J. M., Nevins J. R. The E2F transcription factor is a cellular target for the RB protein. Cell. 1991 Jun 14;65(6):1053–1061. doi: 10.1016/0092-8674(91)90557-f. [DOI] [PubMed] [Google Scholar]
  7. Chen L. I., Nishinaka T., Kwan K., Kitabayashi I., Yokoyama K., Fu Y. H., Grünwald S., Chiu R. The retinoblastoma gene product RB stimulates Sp1-mediated transcription by liberating Sp1 from a negative regulator. Mol Cell Biol. 1994 Jul;14(7):4380–4389. doi: 10.1128/mcb.14.7.4380. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Cobrinik D., Whyte P., Peeper D. S., Jacks T., Weinberg R. A. Cell cycle-specific association of E2F with the p130 E1A-binding protein. Genes Dev. 1993 Dec;7(12A):2392–2404. doi: 10.1101/gad.7.12a.2392. [DOI] [PubMed] [Google Scholar]
  9. Courey A. J., Tjian R. Analysis of Sp1 in vivo reveals multiple transcriptional domains, including a novel glutamine-rich activation motif. Cell. 1988 Dec 2;55(5):887–898. doi: 10.1016/0092-8674(88)90144-4. [DOI] [PubMed] [Google Scholar]
  10. Datta P. K., Bagchi S. Repression of transforming growth factor beta 1 promoter by the adenovirus oncogene E1A. Identification of a unique GC-rich sequence as a target for E1A repression. J Biol Chem. 1994 Oct 14;269(41):25392–25399. [PubMed] [Google Scholar]
  11. Davies R., Hicks R., Crook T., Morris J., Vousden K. Human papillomavirus type 16 E7 associates with a histone H1 kinase and with p107 through sequences necessary for transformation. J Virol. 1993 May;67(5):2521–2528. doi: 10.1128/jvi.67.5.2521-2528.1993. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Devoto S. H., Mudryj M., Pines J., Hunter T., Nevins J. R. A cyclin A-protein kinase complex possesses sequence-specific DNA binding activity: p33cdk2 is a component of the E2F-cyclin A complex. Cell. 1992 Jan 10;68(1):167–176. doi: 10.1016/0092-8674(92)90215-x. [DOI] [PubMed] [Google Scholar]
  13. Dyson N., Buchkovich K., Whyte P., Harlow E. The cellular 107K protein that binds to adenovirus E1A also associates with the large T antigens of SV40 and JC virus. Cell. 1989 Jul 28;58(2):249–255. doi: 10.1016/0092-8674(89)90839-8. [DOI] [PubMed] [Google Scholar]
  14. Dyson N., Buchkovich K., Whyte P., Harlow E. The cellular 107K protein that binds to adenovirus E1A also associates with the large T antigens of SV40 and JC virus. Cell. 1989 Jul 28;58(2):249–255. doi: 10.1016/0092-8674(89)90839-8. [DOI] [PubMed] [Google Scholar]
  15. Dyson N., Harlow E. Adenovirus E1A targets key regulators of cell proliferation. Cancer Surv. 1992;12:161–195. [PubMed] [Google Scholar]
  16. Ewen M. E., Faha B., Harlow E., Livingston D. M. Interaction of p107 with cyclin A independent of complex formation with viral oncoproteins. Science. 1992 Jan 3;255(5040):85–87. doi: 10.1126/science.1532457. [DOI] [PubMed] [Google Scholar]
  17. Ewen M. E. The cell cycle and the retinoblastoma protein family. Cancer Metastasis Rev. 1994 Mar;13(1):45–66. doi: 10.1007/BF00690418. [DOI] [PubMed] [Google Scholar]
  18. Ewen M. E., Xing Y. G., Lawrence J. B., Livingston D. M. Molecular cloning, chromosomal mapping, and expression of the cDNA for p107, a retinoblastoma gene product-related protein. Cell. 1991 Sep 20;66(6):1155–1164. doi: 10.1016/0092-8674(91)90038-z. [DOI] [PubMed] [Google Scholar]
  19. Faha B., Ewen M. E., Tsai L. H., Livingston D. M., Harlow E. Interaction between human cyclin A and adenovirus E1A-associated p107 protein. Science. 1992 Jan 3;255(5040):87–90. doi: 10.1126/science.1532458. [DOI] [PubMed] [Google Scholar]
  20. Ginsberg D., Vairo G., Chittenden T., Xiao Z. X., Xu G., Wydner K. L., DeCaprio J. A., Lawrence J. B., Livingston D. M. E2F-4, a new member of the E2F transcription factor family, interacts with p107. Genes Dev. 1994 Nov 15;8(22):2665–2679. doi: 10.1101/gad.8.22.2665. [DOI] [PubMed] [Google Scholar]
  21. 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]
  22. Gu W., Bhatia K., Magrath I. T., Dang C. V., Dalla-Favera R. Binding and suppression of the Myc transcriptional activation domain by p107. Science. 1994 Apr 8;264(5156):251–254. doi: 10.1126/science.8146655. [DOI] [PubMed] [Google Scholar]
  23. Hannon G. J., Demetrick D., Beach D. Isolation of the Rb-related p130 through its interaction with CDK2 and cyclins. Genes Dev. 1993 Dec;7(12A):2378–2391. doi: 10.1101/gad.7.12a.2378. [DOI] [PubMed] [Google Scholar]
  24. Helin K., Lees J. A., Vidal M., Dyson N., Harlow E., Fattaey A. A cDNA encoding a pRB-binding protein with properties of the transcription factor E2F. Cell. 1992 Jul 24;70(2):337–350. doi: 10.1016/0092-8674(92)90107-n. [DOI] [PubMed] [Google Scholar]
  25. Hoey T., Weinzierl R. O., Gill G., Chen J. L., Dynlacht B. D., Tjian R. Molecular cloning and functional analysis of Drosophila TAF110 reveal properties expected of coactivators. Cell. 1993 Jan 29;72(2):247–260. doi: 10.1016/0092-8674(93)90664-c. [DOI] [PubMed] [Google Scholar]
  26. Ivey-Hoyle M., Conroy R., Huber H. E., Goodhart P. J., Oliff A., Heimbrook D. C. Cloning and characterization of E2F-2, a novel protein with the biochemical properties of transcription factor E2F. Mol Cell Biol. 1993 Dec;13(12):7802–7812. doi: 10.1128/mcb.13.12.7802. [DOI] [PMC free article] [PubMed] [Google Scholar]
  27. Jackson S. P., MacDonald J. J., Lees-Miller S., Tjian R. GC box binding induces phosphorylation of Sp1 by a DNA-dependent protein kinase. Cell. 1990 Oct 5;63(1):155–165. doi: 10.1016/0092-8674(90)90296-q. [DOI] [PubMed] [Google Scholar]
  28. Jackson S. P., Tjian R. O-glycosylation of eukaryotic transcription factors: implications for mechanisms of transcriptional regulation. Cell. 1988 Oct 7;55(1):125–133. doi: 10.1016/0092-8674(88)90015-3. [DOI] [PubMed] [Google Scholar]
  29. Kim S. J., Onwuta U. S., Lee Y. I., Li R., Botchan M. R., Robbins P. D. The retinoblastoma gene product regulates Sp1-mediated transcription. Mol Cell Biol. 1992 Jun;12(6):2455–2463. doi: 10.1128/mcb.12.6.2455. [DOI] [PMC free article] [PubMed] [Google Scholar]
  30. Kingsley C., Winoto A. Cloning of GT box-binding proteins: a novel Sp1 multigene family regulating T-cell receptor gene expression. Mol Cell Biol. 1992 Oct;12(10):4251–4261. doi: 10.1128/mcb.12.10.4251. [DOI] [PMC free article] [PubMed] [Google Scholar]
  31. Lee J. S., Galvin K. M., Shi Y. Evidence for physical interaction between the zinc-finger transcription factors YY1 and Sp1. Proc Natl Acad Sci U S A. 1993 Jul 1;90(13):6145–6149. doi: 10.1073/pnas.90.13.6145. [DOI] [PMC free article] [PubMed] [Google Scholar]
  32. Lees E., Faha B., Dulic V., Reed S. I., Harlow E. Cyclin E/cdk2 and cyclin A/cdk2 kinases associate with p107 and E2F in a temporally distinct manner. Genes Dev. 1992 Oct;6(10):1874–1885. doi: 10.1101/gad.6.10.1874. [DOI] [PubMed] [Google Scholar]
  33. Li R., Knight J. D., Jackson S. P., Tjian R., Botchan M. R. Direct interaction between Sp1 and the BPV enhancer E2 protein mediates synergistic activation of transcription. Cell. 1991 May 3;65(3):493–505. doi: 10.1016/0092-8674(91)90467-d. [DOI] [PubMed] [Google Scholar]
  34. Li Y., Graham C., Lacy S., Duncan A. M., Whyte P. The adenovirus E1A-associated 130-kD protein is encoded by a member of the retinoblastoma gene family and physically interacts with cyclins A and E. Genes Dev. 1993 Dec;7(12A):2366–2377. doi: 10.1101/gad.7.12a.2366. [DOI] [PubMed] [Google Scholar]
  35. Lillie J. W., Green M. R. Transcription activation by the adenovirus E1a protein. Nature. 1989 Mar 2;338(6210):39–44. doi: 10.1038/338039a0. [DOI] [PubMed] [Google Scholar]
  36. Nevins J. R. E2F: a link between the Rb tumor suppressor protein and viral oncoproteins. Science. 1992 Oct 16;258(5081):424–429. doi: 10.1126/science.1411535. [DOI] [PubMed] [Google Scholar]
  37. Nevins J. R. Transcriptional regulation. A closer look at E2F. Nature. 1992 Jul 30;358(6385):375–376. doi: 10.1038/358375a0. [DOI] [PubMed] [Google Scholar]
  38. Pascal E., Tjian R. Different activation domains of Sp1 govern formation of multimers and mediate transcriptional synergism. Genes Dev. 1991 Sep;5(9):1646–1656. doi: 10.1101/gad.5.9.1646. [DOI] [PubMed] [Google Scholar]
  39. Raychaudhuri P., Bagchi S., Devoto S. H., Kraus V. B., Moran E., Nevins J. R. Domains of the adenovirus E1A protein required for oncogenic activity are also required for dissociation of E2F transcription factor complexes. Genes Dev. 1991 Jul;5(7):1200–1211. doi: 10.1101/gad.5.7.1200. [DOI] [PubMed] [Google Scholar]
  40. Raychaudhuri P., Rooney R., Nevins J. R. Identification of an E1A-inducible cellular factor that interacts with regulatory sequences within the adenovirus E4 promoter. EMBO J. 1987 Dec 20;6(13):4073–4081. doi: 10.1002/j.1460-2075.1987.tb02753.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  41. Saffer J. D., Jackson S. P., Annarella M. B. Developmental expression of Sp1 in the mouse. Mol Cell Biol. 1991 Apr;11(4):2189–2199. doi: 10.1128/mcb.11.4.2189. [DOI] [PMC free article] [PubMed] [Google Scholar]
  42. Saffer J. D., Jackson S. P., Thurston S. J. SV40 stimulates expression of the transacting factor Sp1 at the mRNA level. Genes Dev. 1990 Apr;4(4):659–666. doi: 10.1101/gad.4.4.659. [DOI] [PubMed] [Google Scholar]
  43. Schwarz J. K., Devoto S. H., Smith E. J., Chellappan S. P., Jakoi L., Nevins J. R. Interactions of the p107 and Rb proteins with E2F during the cell proliferation response. EMBO J. 1993 Mar;12(3):1013–1020. doi: 10.1002/j.1460-2075.1993.tb05742.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  44. Seto E., Lewis B., Shenk T. Interaction between transcription factors Sp1 and YY1. Nature. 1993 Sep 30;365(6445):462–464. doi: 10.1038/365462a0. [DOI] [PubMed] [Google Scholar]
  45. Shan B., Zhu X., Chen P. L., Durfee T., Yang Y., Sharp D., Lee W. H. Molecular cloning of cellular genes encoding retinoblastoma-associated proteins: identification of a gene with properties of the transcription factor E2F. Mol Cell Biol. 1992 Dec;12(12):5620–5631. doi: 10.1128/mcb.12.12.5620. [DOI] [PMC free article] [PubMed] [Google Scholar]
  46. Shirodkar S., Ewen M., DeCaprio J. A., Morgan J., Livingston D. M., Chittenden T. The transcription factor E2F interacts with the retinoblastoma product and a p107-cyclin A complex in a cell cycle-regulated manner. Cell. 1992 Jan 10;68(1):157–166. doi: 10.1016/0092-8674(92)90214-w. [DOI] [PubMed] [Google Scholar]
  47. Sif S., Capobianco A. J., Gilmore T. D. The v-Rel oncoprotein increases expression from Sp1 site-containing promoters in chicken embryo fibroblasts. Oncogene. 1993 Sep;8(9):2501–2509. [PubMed] [Google Scholar]
  48. Smith E. J., Nevins J. R. The Rb-related p107 protein can suppress E2F function independently of binding to cyclin A/cdk2. Mol Cell Biol. 1995 Jan;15(1):338–344. doi: 10.1128/mcb.15.1.338. [DOI] [PMC free article] [PubMed] [Google Scholar]
  49. Udvadia A. J., Rogers K. T., Higgins P. D., Murata Y., Martin K. H., Humphrey P. A., Horowitz J. M. Sp-1 binds promoter elements regulated by the RB protein and Sp-1-mediated transcription is stimulated by RB coexpression. Proc Natl Acad Sci U S A. 1993 Apr 15;90(8):3265–3269. doi: 10.1073/pnas.90.8.3265. [DOI] [PMC free article] [PubMed] [Google Scholar]
  50. Udvadia A. J., Templeton D. J., Horowitz J. M. Functional interactions between the retinoblastoma (Rb) protein and Sp-family members: superactivation by Rb requires amino acids necessary for growth suppression. Proc Natl Acad Sci U S A. 1995 Apr 25;92(9):3953–3957. doi: 10.1073/pnas.92.9.3953. [DOI] [PMC free article] [PubMed] [Google Scholar]
  51. Zamanian M., La Thangue N. B. Transcriptional repression by the Rb-related protein p107. Mol Biol Cell. 1993 Apr;4(4):389–396. doi: 10.1091/mbc.4.4.389. [DOI] [PMC free article] [PubMed] [Google Scholar]
  52. Zhu L., van den Heuvel S., Helin K., Fattaey A., Ewen M., Livingston D., Dyson N., Harlow E. Inhibition of cell proliferation by p107, a relative of the retinoblastoma protein. Genes Dev. 1993 Jul;7(7A):1111–1125. doi: 10.1101/gad.7.7a.1111. [DOI] [PubMed] [Google Scholar]

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