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. 1995 Feb;15(2):1060–1070. doi: 10.1128/mcb.15.2.1060

Modulation of p53-mediated transcriptional repression and apoptosis by the adenovirus E1B 19K protein.

P Sabbatini 1, S K Chiou 1, L Rao 1, E White 1
PMCID: PMC232006  PMID: 7823921

Abstract

BRK cell lines that stably express adenovirus E1A and a murine temperature-sensitive p53 undergo apoptosis when p53 assumes the wild-type conformation. Expression of the E1B 19,000-molecular-weight (19K) protein rescues cells from this p53-mediated apoptosis and diverts cells to a growth-arrested state. As p53 likely functions as a tumor suppressor by regulating transcription, the ability of the E1B 19K protein to regulate p53-mediated transactivation and transcriptional repression was investigated. In promoter-reporter assays the E1B 19K did not block p53-mediated transactivation but did alleviate p53-mediated transcriptional repression. E1B 19K expression permitted efficient transcriptional activation of the p21/WAF-1/cip-1 mRNA by p53, consistent with maintenance of the growth arrest function of p53. The E1B 19K protein is thereby unique among DNA virus-transforming proteins that target p53 for inactivation in that it selectively modulates the transcriptional properties of p53. The E1B 19K protein also rescued cells from apoptosis induced by inhibitors of transcription and protein synthesis. This suggests that cell death may result from the inhibition of expression of survival factors which function to maintain cell viability. p53 may induce apoptosis through generalized transcriptional repression. In turn, the E1B 19K protein may prevent p53-mediated apoptosis by alleviating p53-mediated transcriptional repression.

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Selected References

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  1. Baker S. J., Markowitz S., Fearon E. R., Willson J. K., Vogelstein B. Suppression of human colorectal carcinoma cell growth by wild-type p53. Science. 1990 Aug 24;249(4971):912–915. doi: 10.1126/science.2144057. [DOI] [PubMed] [Google Scholar]
  2. Bazar L. S., Deeg H. J. Ultraviolet B-induced DNA fragmentation (apoptosis) in activated T-lymphocytes and Jurkat cells is augmented by inhibition of RNA and protein synthesis. Exp Hematol. 1992 Jan;20(1):80–86. [PubMed] [Google Scholar]
  3. Benchimol S., Pim D., Crawford L. Radioimmunoassay of the cellular protein p53 in mouse and human cell lines. EMBO J. 1982;1(9):1055–1062. doi: 10.1002/j.1460-2075.1982.tb01296.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Boise L. H., González-García M., Postema C. E., Ding L., Lindsten T., Turka L. A., Mao X., Nuñez G., Thompson C. B. bcl-x, a bcl-2-related gene that functions as a dominant regulator of apoptotic cell death. Cell. 1993 Aug 27;74(4):597–608. doi: 10.1016/0092-8674(93)90508-n. [DOI] [PubMed] [Google Scholar]
  5. Caelles C., Helmberg A., Karin M. p53-dependent apoptosis in the absence of transcriptional activation of p53-target genes. Nature. 1994 Jul 21;370(6486):220–223. doi: 10.1038/370220a0. [DOI] [PubMed] [Google Scholar]
  6. Chiou S. K., Rao L., White E. Bcl-2 blocks p53-dependent apoptosis. Mol Cell Biol. 1994 Apr;14(4):2556–2563. doi: 10.1128/mcb.14.4.2556. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Chiou S. K., Tseng C. C., Rao L., White E. Functional complementation of the adenovirus E1B 19-kilodalton protein with Bcl-2 in the inhibition of apoptosis in infected cells. J Virol. 1994 Oct;68(10):6553–6566. doi: 10.1128/jvi.68.10.6553-6566.1994. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Debbas M., White E. Wild-type p53 mediates apoptosis by E1A, which is inhibited by E1B. Genes Dev. 1993 Apr;7(4):546–554. doi: 10.1101/gad.7.4.546. [DOI] [PubMed] [Google Scholar]
  9. Diller L., Kassel J., Nelson C. E., Gryka M. A., Litwak G., Gebhardt M., Bressac B., Ozturk M., Baker S. J., Vogelstein B. p53 functions as a cell cycle control protein in osteosarcomas. Mol Cell Biol. 1990 Nov;10(11):5772–5781. doi: 10.1128/mcb.10.11.5772. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Drapkin R., Sancar A., Reinberg D. Where transcription meets repair. Cell. 1994 Apr 8;77(1):9–12. doi: 10.1016/0092-8674(94)90228-3. [DOI] [PubMed] [Google Scholar]
  11. Farmer G., Bargonetti J., Zhu H., Friedman P., Prywes R., Prives C. Wild-type p53 activates transcription in vitro. Nature. 1992 Jul 2;358(6381):83–86. doi: 10.1038/358083a0. [DOI] [PubMed] [Google Scholar]
  12. Finlay C. A., Hinds P. W., Levine A. J. The p53 proto-oncogene can act as a suppressor of transformation. Cell. 1989 Jun 30;57(7):1083–1093. doi: 10.1016/0092-8674(89)90045-7. [DOI] [PubMed] [Google Scholar]
  13. Funk W. D., Pak D. T., Karas R. H., Wright W. E., Shay J. W. A transcriptionally active DNA-binding site for human p53 protein complexes. Mol Cell Biol. 1992 Jun;12(6):2866–2871. doi: 10.1128/mcb.12.6.2866. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. Gannon J. V., Lane D. P. Protein synthesis required to anchor a mutant p53 protein which is temperature-sensitive for nuclear transport. Nature. 1991 Feb 28;349(6312):802–806. doi: 10.1038/349802a0. [DOI] [PubMed] [Google Scholar]
  15. Ginsberg D., Mechta F., Yaniv M., Oren M. Wild-type p53 can down-modulate the activity of various promoters. Proc Natl Acad Sci U S A. 1991 Nov 15;88(22):9979–9983. doi: 10.1073/pnas.88.22.9979. [DOI] [PMC free article] [PubMed] [Google Scholar]
  16. Ginsberg D., Michael-Michalovitz D., Ginsberg D., Oren M. Induction of growth arrest by a temperature-sensitive p53 mutant is correlated with increased nuclear localization and decreased stability of the protein. Mol Cell Biol. 1991 Jan;11(1):582–585. doi: 10.1128/mcb.11.1.582. [DOI] [PMC free article] [PubMed] [Google Scholar]
  17. Harper J. W., Adami G. R., Wei N., Keyomarsi K., Elledge S. J. The p21 Cdk-interacting protein Cip1 is a potent inhibitor of G1 cyclin-dependent kinases. Cell. 1993 Nov 19;75(4):805–816. doi: 10.1016/0092-8674(93)90499-g. [DOI] [PubMed] [Google Scholar]
  18. Hernandez N. TBP, a universal eukaryotic transcription factor? Genes Dev. 1993 Jul;7(7B):1291–1308. doi: 10.1101/gad.7.7b.1291. [DOI] [PubMed] [Google Scholar]
  19. Herrmann C. H., Mathews M. B. The adenovirus E1B 19-kilodalton protein stimulates gene expression by increasing DNA levels. Mol Cell Biol. 1989 Dec;9(12):5412–5423. doi: 10.1128/mcb.9.12.5412. [DOI] [PMC free article] [PubMed] [Google Scholar]
  20. Hinds P. W., Finlay C. A., Quartin R. S., Baker S. J., Fearon E. R., Vogelstein B., Levine A. J. Mutant p53 DNA clones from human colon carcinomas cooperate with ras in transforming primary rat cells: a comparison of the "hot spot" mutant phenotypes. Cell Growth Differ. 1990 Dec;1(12):571–580. [PubMed] [Google Scholar]
  21. Kastan M. B., Zhan Q., el-Deiry W. S., Carrier F., Jacks T., Walsh W. V., Plunkett B. S., Vogelstein B., Fornace A. J., Jr A mammalian cell cycle checkpoint pathway utilizing p53 and GADD45 is defective in ataxia-telangiectasia. Cell. 1992 Nov 13;71(4):587–597. doi: 10.1016/0092-8674(92)90593-2. [DOI] [PubMed] [Google Scholar]
  22. Kern S. E., Pietenpol J. A., Thiagalingam S., Seymour A., Kinzler K. W., Vogelstein B. Oncogenic forms of p53 inhibit p53-regulated gene expression. Science. 1992 May 8;256(5058):827–830. doi: 10.1126/science.1589764. [DOI] [PubMed] [Google Scholar]
  23. Kozopas K. M., Yang T., Buchan H. L., Zhou P., Craig R. W. MCL1, a gene expressed in programmed myeloid cell differentiation, has sequence similarity to BCL2. Proc Natl Acad Sci U S A. 1993 Apr 15;90(8):3516–3520. doi: 10.1073/pnas.90.8.3516. [DOI] [PMC free article] [PubMed] [Google Scholar]
  24. Levy N., Yonish-Rouach E., Oren M., Kimchi A. Complementation by wild-type p53 of interleukin-6 effects on M1 cells: induction of cell cycle exit and cooperativity with c-myc suppression. Mol Cell Biol. 1993 Dec;13(12):7942–7952. doi: 10.1128/mcb.13.12.7942. [DOI] [PMC free article] [PubMed] [Google Scholar]
  25. Lin E. Y., Orlofsky A., Berger M. S., Prystowsky M. B. Characterization of A1, a novel hemopoietic-specific early-response gene with sequence similarity to bcl-2. J Immunol. 1993 Aug 15;151(4):1979–1988. [PubMed] [Google Scholar]
  26. Liu X., Miller C. W., Koeffler P. H., Berk A. J. The p53 activation domain binds the TATA box-binding polypeptide in Holo-TFIID, and a neighboring p53 domain inhibits transcription. Mol Cell Biol. 1993 Jun;13(6):3291–3300. doi: 10.1128/mcb.13.6.3291. [DOI] [PMC free article] [PubMed] [Google Scholar]
  27. Lowe S. W., Ruley H. E. Stabilization of the p53 tumor suppressor is induced by adenovirus 5 E1A and accompanies apoptosis. Genes Dev. 1993 Apr;7(4):535–545. doi: 10.1101/gad.7.4.535. [DOI] [PubMed] [Google Scholar]
  28. Mack D. H., Vartikar J., Pipas J. M., Laimins L. A. Specific repression of TATA-mediated but not initiator-mediated transcription by wild-type p53. Nature. 1993 May 20;363(6426):281–283. doi: 10.1038/363281a0. [DOI] [PubMed] [Google Scholar]
  29. Martin S. J., Lennon S. V., Bonham A. M., Cotter T. G. Induction of apoptosis (programmed cell death) in human leukemic HL-60 cells by inhibition of RNA or protein synthesis. J Immunol. 1990 Sep 15;145(6):1859–1867. [PubMed] [Google Scholar]
  30. Martin S. J. Protein or RNA synthesis inhibition induces apoptosis of mature human CD4+ T cell blasts. Immunol Lett. 1993 Feb;35(2):125–134. doi: 10.1016/0165-2478(93)90080-l. [DOI] [PubMed] [Google Scholar]
  31. Michalovitz D., Halevy O., Oren M. Conditional inhibition of transformation and of cell proliferation by a temperature-sensitive mutant of p53. Cell. 1990 Aug 24;62(4):671–680. doi: 10.1016/0092-8674(90)90113-s. [DOI] [PubMed] [Google Scholar]
  32. Oliner J. D., Pietenpol J. A., Thiagalingam S., Gyuris J., Kinzler K. W., Vogelstein B. Oncoprotein MDM2 conceals the activation domain of tumour suppressor p53. Nature. 1993 Apr 29;362(6423):857–860. doi: 10.1038/362857a0. [DOI] [PubMed] [Google Scholar]
  33. Pilder S., Logan J., Shenk T. Deletion of the gene encoding the adenovirus 5 early region 1b 21,000-molecular-weight polypeptide leads to degradation of viral and host cell DNA. J Virol. 1984 Nov;52(2):664–671. doi: 10.1128/jvi.52.2.664-671.1984. [DOI] [PMC free article] [PubMed] [Google Scholar]
  34. Pugh B. F., Tjian R. Mechanism of transcriptional activation by Sp1: evidence for coactivators. Cell. 1990 Jun 29;61(7):1187–1197. doi: 10.1016/0092-8674(90)90683-6. [DOI] [PubMed] [Google Scholar]
  35. Raff M. C. Social controls on cell survival and cell death. Nature. 1992 Apr 2;356(6368):397–400. doi: 10.1038/356397a0. [DOI] [PubMed] [Google Scholar]
  36. Ragimov N., Krauskopf A., Navot N., Rotter V., Oren M., Aloni Y. Wild-type but not mutant p53 can repress transcription initiation in vitro by interfering with the binding of basal transcription factors to the TATA motif. Oncogene. 1993 May;8(5):1183–1193. [PubMed] [Google Scholar]
  37. Rao L., Debbas M., Sabbatini P., Hockenbery D., Korsmeyer S., White E. The adenovirus E1A proteins induce apoptosis, which is inhibited by the E1B 19-kDa and Bcl-2 proteins. Proc Natl Acad Sci U S A. 1992 Aug 15;89(16):7742–7746. doi: 10.1073/pnas.89.16.7742. [DOI] [PMC free article] [PubMed] [Google Scholar]
  38. Ridgway P. J., Hale T. K., Braithwaite A. W. p53 confers a selective advantage on transfected HeLa cells. Oncogene. 1993 Apr;8(4):1069–1074. [PubMed] [Google Scholar]
  39. Santhanam U., Ray A., Sehgal P. B. Repression of the interleukin 6 gene promoter by p53 and the retinoblastoma susceptibility gene product. Proc Natl Acad Sci U S A. 1991 Sep 1;88(17):7605–7609. doi: 10.1073/pnas.88.17.7605. [DOI] [PMC free article] [PubMed] [Google Scholar]
  40. Scheffner M., Werness B. A., Huibregtse J. M., Levine A. J., Howley P. M. The E6 oncoprotein encoded by human papillomavirus types 16 and 18 promotes the degradation of p53. Cell. 1990 Dec 21;63(6):1129–1136. doi: 10.1016/0092-8674(90)90409-8. [DOI] [PubMed] [Google Scholar]
  41. Seto E., Usheva A., Zambetti G. P., Momand J., Horikoshi N., Weinmann R., Levine A. J., Shenk T. Wild-type p53 binds to the TATA-binding protein and represses transcription. Proc Natl Acad Sci U S A. 1992 Dec 15;89(24):12028–12032. doi: 10.1073/pnas.89.24.12028. [DOI] [PMC free article] [PubMed] [Google Scholar]
  42. Subler M. A., Martin D. W., Deb S. Inhibition of viral and cellular promoters by human wild-type p53. J Virol. 1992 Aug;66(8):4757–4762. doi: 10.1128/jvi.66.8.4757-4762.1992. [DOI] [PMC free article] [PubMed] [Google Scholar]
  43. Subramanian T., Kuppuswamy M., Gysbers J., Mak S., Chinnadurai G. 19-kDa tumor antigen coded by early region E1b of adenovirus 2 is required for efficient synthesis and for protection of viral DNA. J Biol Chem. 1984 Oct 10;259(19):11777–11783. [PubMed] [Google Scholar]
  44. Tan T. H., Wallis J., Levine A. J. Identification of the p53 protein domain involved in formation of the simian virus 40 large T-antigen-p53 protein complex. J Virol. 1986 Sep;59(3):574–583. doi: 10.1128/jvi.59.3.574-583.1986. [DOI] [PMC free article] [PubMed] [Google Scholar]
  45. White E., Blose S. H., Stillman B. W. Nuclear envelope localization of an adenovirus tumor antigen maintains the integrity of cellular DNA. Mol Cell Biol. 1984 Dec;4(12):2865–2875. doi: 10.1128/mcb.4.12.2865. [DOI] [PMC free article] [PubMed] [Google Scholar]
  46. White E., Cipriani R. Role of adenovirus E1B proteins in transformation: altered organization of intermediate filaments in transformed cells that express the 19-kilodalton protein. Mol Cell Biol. 1990 Jan;10(1):120–130. doi: 10.1128/mcb.10.1.120. [DOI] [PMC free article] [PubMed] [Google Scholar]
  47. White E., Cipriani R., Sabbatini P., Denton A. Adenovirus E1B 19-kilodalton protein overcomes the cytotoxicity of E1A proteins. J Virol. 1991 Jun;65(6):2968–2978. doi: 10.1128/jvi.65.6.2968-2978.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
  48. White E., Cipriani R. Specific disruption of intermediate filaments and the nuclear lamina by the 19-kDa product of the adenovirus E1B oncogene. Proc Natl Acad Sci U S A. 1989 Dec;86(24):9886–9890. doi: 10.1073/pnas.86.24.9886. [DOI] [PMC free article] [PubMed] [Google Scholar]
  49. White E., Faha B., Stillman B. Regulation of adenovirus gene expression in human WI38 cells by an E1B-encoded tumor antigen. Mol Cell Biol. 1986 Nov;6(11):3763–3773. doi: 10.1128/mcb.6.11.3763. [DOI] [PMC free article] [PubMed] [Google Scholar]
  50. White E. Regulation of apoptosis by the transforming genes of the DNA tumor virus adenovirus. Proc Soc Exp Biol Med. 1993 Oct;204(1):30–39. doi: 10.3181/00379727-204-43631. [DOI] [PubMed] [Google Scholar]
  51. White E., Sabbatini P., Debbas M., Wold W. S., Kusher D. I., Gooding L. R. The 19-kilodalton adenovirus E1B transforming protein inhibits programmed cell death and prevents cytolysis by tumor necrosis factor alpha. Mol Cell Biol. 1992 Jun;12(6):2570–2580. doi: 10.1128/mcb.12.6.2570. [DOI] [PMC free article] [PubMed] [Google Scholar]
  52. White E., Stillman B. Expression of adenovirus E1B mutant phenotypes is dependent on the host cell and on synthesis of E1A proteins. J Virol. 1987 Feb;61(2):426–435. doi: 10.1128/jvi.61.2.426-435.1987. [DOI] [PMC free article] [PubMed] [Google Scholar]
  53. Xiong Y., Hannon G. J., Zhang H., Casso D., Kobayashi R., Beach D. p21 is a universal inhibitor of cyclin kinases. Nature. 1993 Dec 16;366(6456):701–704. doi: 10.1038/366701a0. [DOI] [PubMed] [Google Scholar]
  54. Yew P. R., Berk A. J. Inhibition of p53 transactivation required for transformation by adenovirus early 1B protein. Nature. 1992 May 7;357(6373):82–85. doi: 10.1038/357082a0. [DOI] [PubMed] [Google Scholar]
  55. Yonish-Rouach E., Grunwald D., Wilder S., Kimchi A., May E., Lawrence J. J., May P., Oren M. p53-mediated cell death: relationship to cell cycle control. Mol Cell Biol. 1993 Mar;13(3):1415–1423. doi: 10.1128/mcb.13.3.1415. [DOI] [PMC free article] [PubMed] [Google Scholar]
  56. Yonish-Rouach E., Resnitzky D., Lotem J., Sachs L., Kimchi A., Oren M. Wild-type p53 induces apoptosis of myeloid leukaemic cells that is inhibited by interleukin-6. Nature. 1991 Jul 25;352(6333):345–347. doi: 10.1038/352345a0. [DOI] [PubMed] [Google Scholar]
  57. Zambetti G. P., Bargonetti J., Walker K., Prives C., Levine A. J. Wild-type p53 mediates positive regulation of gene expression through a specific DNA sequence element. Genes Dev. 1992 Jul;6(7):1143–1152. doi: 10.1101/gad.6.7.1143. [DOI] [PubMed] [Google Scholar]
  58. Zhou Q., Lieberman P. M., Boyer T. G., Berk A. J. Holo-TFIID supports transcriptional stimulation by diverse activators and from a TATA-less promoter. Genes Dev. 1992 Oct;6(10):1964–1974. doi: 10.1101/gad.6.10.1964. [DOI] [PubMed] [Google Scholar]
  59. el-Deiry W. S., Tokino T., Velculescu V. E., Levy D. B., Parsons R., Trent J. M., Lin D., Mercer W. E., Kinzler K. W., Vogelstein B. WAF1, a potential mediator of p53 tumor suppression. Cell. 1993 Nov 19;75(4):817–825. doi: 10.1016/0092-8674(93)90500-p. [DOI] [PubMed] [Google Scholar]

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