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. 1986 Apr;58(1):59–66. doi: 10.1128/jvi.58.1.59-66.1986

The 89,000-Mr murine cytomegalovirus immediate-early protein activates gene transcription.

U H Koszinowski, G M Keil, H Volkmer, M R Fibi, A Ebeling-Keil, K Münch
PMCID: PMC252876  PMID: 3005659

Abstract

To study trans-activation of gene expression by murine cytomegalovirus (MCMV) immediate-early (IE) proteins, the IE coding region 1 (ie1), which encodes the 89,000-Mr IE phosphoprotein (pp89), was stably introduced into L cells. A cell line was selected and characterized that efficiently expressed the authentic viral protein. The pp89 that was constitutively expressed in L cells stimulated the expression of transfected recombinant constructs containing the bacterial chloramphenicol acetyltransferase (CAT) gene under the control of viral promoters. The regulatory function of the ie1 product was confirmed by transient expression assays in which MCMV IE genes were cotransfected into L cells together with recombinant constructs of the CAT gene. For CAT activation by the ie1 product, a promoter region was required, but there was no preferential activation of a herpes simplex virus type 1 delayed-early promoter. All plasmid constructs that contained the intact coding sequences for pp89 induced gene expression in trans. The MCMV enhancer region was not essential for the expression of a functional IE gene product, and testing of the cis-regulatory activity of the MCMV enhancer revealed a low activity in L cells. Another region transcribed at IE times of infection, IE coding region 2, was unable to induce CAT expression and also did not augment the functional activity of ie1 after cotransfection.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Alwine J. C. Transient gene expression control: effects of transfected DNA stability and trans-activation by viral early proteins. Mol Cell Biol. 1985 May;5(5):1034–1042. doi: 10.1128/mcb.5.5.1034. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. 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]
  3. Boshart M., Weber F., Jahn G., Dorsch-Häsler K., Fleckenstein B., Schaffner W. A very strong enhancer is located upstream of an immediate early gene of human cytomegalovirus. Cell. 1985 Jun;41(2):521–530. doi: 10.1016/s0092-8674(85)80025-8. [DOI] [PubMed] [Google Scholar]
  4. Colbère-Garapin F., Horodniceanu F., Kourilsky P., Garapin A. C. A new dominant hybrid selective marker for higher eukaryotic cells. J Mol Biol. 1981 Jul 25;150(1):1–14. doi: 10.1016/0022-2836(81)90321-1. [DOI] [PubMed] [Google Scholar]
  5. Ebeling A., Keil G. M., Knust E., Koszinowski U. H. Molecular cloning and physical mapping of murine cytomegalovirus DNA. J Virol. 1983 Sep;47(3):421–433. doi: 10.1128/jvi.47.3.421-433.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Everett R. D. A detailed analysis of an HSV-1 early promoter: sequences involved in trans-activation by viral immediate-early gene products are not early-gene specific. Nucleic Acids Res. 1984 Apr 11;12(7):3037–3056. doi: 10.1093/nar/12.7.3037. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Everett R. D. DNA sequence elements required for regulated expression of the HSV-1 glycoprotein D gene lie within 83 bp of the RNA capsites. Nucleic Acids Res. 1983 Oct 11;11(19):6647–6666. doi: 10.1093/nar/11.19.6647. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Everett R. D. Trans activation of transcription by herpes virus products: requirement for two HSV-1 immediate-early polypeptides for maximum activity. EMBO J. 1984 Dec 20;3(13):3135–3141. doi: 10.1002/j.1460-2075.1984.tb02270.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. George J., Blakesley R. W., Chirikjian J. G. Sequence-specific endonuclease Bam HI. Effect of hydrophobic reagents on sequence recognition and catalysis. J Biol Chem. 1980 Jul 25;255(14):6521–6524. [PubMed] [Google Scholar]
  10. 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]
  11. Graham F. L., van der Eb A. J. A new technique for the assay of infectivity of human adenovirus 5 DNA. Virology. 1973 Apr;52(2):456–467. doi: 10.1016/0042-6822(73)90341-3. [DOI] [PubMed] [Google Scholar]
  12. Green M. R., Treisman R., Maniatis T. Transcriptional activation of cloned human beta-globin genes by viral immediate-early gene products. Cell. 1983 Nov;35(1):137–148. doi: 10.1016/0092-8674(83)90216-7. [DOI] [PubMed] [Google Scholar]
  13. Honess R. W., Roizman B. Regulation of herpesvirus macromolecular synthesis. I. Cascade regulation of the synthesis of three groups of viral proteins. J Virol. 1974 Jul;14(1):8–19. doi: 10.1128/jvi.14.1.8-19.1974. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. Ihara S., Feldman L., Watanabe S., Ben-Porat T. Characterization of the immediate-early functions of pseudorabies virus. Virology. 1983 Dec;131(2):437–454. doi: 10.1016/0042-6822(83)90510-x. [DOI] [PubMed] [Google Scholar]
  15. Imperiale M. J., Feldman L. T., Nevins J. R. Activation of gene expression by adenovirus and herpesvirus regulatory genes acting in trans and by a cis-acting adenovirus enhancer element. Cell. 1983 Nov;35(1):127–136. doi: 10.1016/0092-8674(83)90215-5. [DOI] [PubMed] [Google Scholar]
  16. KIT S., DUBBS D. R., PIEKARSKI L. J., HSU T. C. DELETION OF THYMIDINE KINASE ACTIVITY FROM L CELLS RESISTANT TO BROMODEOXYURIDINE. Exp Cell Res. 1963 Aug;31:297–312. doi: 10.1016/0014-4827(63)90007-7. [DOI] [PubMed] [Google Scholar]
  17. Keil G. M., Ebeling-Keil A., Koszinowski U. H. Temporal regulation of murine cytomegalovirus transcription and mapping of viral RNA synthesized at immediate early times after infection. J Virol. 1984 Jun;50(3):784–795. doi: 10.1128/jvi.50.3.784-795.1984. [DOI] [PMC free article] [PubMed] [Google Scholar]
  18. Keil G. M., Fibi M. R., Koszinowski U. H. Characterization of the major immediate-early polypeptides encoded by murine cytomegalovirus. J Virol. 1985 May;54(2):422–428. doi: 10.1128/jvi.54.2.422-428.1985. [DOI] [PMC free article] [PubMed] [Google Scholar]
  19. Laimins L. A., Khoury G., Gorman C., Howard B., Gruss P. Host-specific activation of transcription by tandem repeats from simian virus 40 and Moloney murine sarcoma virus. Proc Natl Acad Sci U S A. 1982 Nov;79(21):6453–6457. doi: 10.1073/pnas.79.21.6453. [DOI] [PMC free article] [PubMed] [Google Scholar]
  20. Lopata M. A., Cleveland D. W., Sollner-Webb B. High level transient expression of a chloramphenicol acetyl transferase gene by DEAE-dextran mediated DNA transfection coupled with a dimethyl sulfoxide or glycerol shock treatment. Nucleic Acids Res. 1984 Jul 25;12(14):5707–5717. doi: 10.1093/nar/12.14.5707. [DOI] [PMC free article] [PubMed] [Google Scholar]
  21. Luthman H., Magnusson G. High efficiency polyoma DNA transfection of chloroquine treated cells. Nucleic Acids Res. 1983 Mar 11;11(5):1295–1308. doi: 10.1093/nar/11.5.1295. [DOI] [PMC free article] [PubMed] [Google Scholar]
  22. Marks J. R., Mercer J. A., Spector D. H. Transcription in mouse embryo cells permissively infected by murine cytomegalovirus. Virology. 1983 Nov;131(1):247–254. doi: 10.1016/0042-6822(83)90550-0. [DOI] [PubMed] [Google Scholar]
  23. Melton D. A., Krieg P. A., Rebagliati M. R., Maniatis T., Zinn K., Green M. R. Efficient in vitro synthesis of biologically active RNA and RNA hybridization probes from plasmids containing a bacteriophage SP6 promoter. Nucleic Acids Res. 1984 Sep 25;12(18):7035–7056. doi: 10.1093/nar/12.18.7035. [DOI] [PMC free article] [PubMed] [Google Scholar]
  24. Mercer J. A., Marks J. R., Spector D. H. Molecular cloning and restriction endonuclease mapping of the murine cytomegalovirus genome (Smith Strain). Virology. 1983 Aug;129(1):94–106. doi: 10.1016/0042-6822(83)90398-7. [DOI] [PubMed] [Google Scholar]
  25. O'Hare P., Hayward G. S. Evidence for a direct role for both the 175,000- and 110,000-molecular-weight immediate-early proteins of herpes simplex virus in the transactivation of delayed-early promoters. J Virol. 1985 Mar;53(3):751–760. doi: 10.1128/jvi.53.3.751-760.1985. [DOI] [PMC free article] [PubMed] [Google Scholar]
  26. O'Hare P., Hayward G. S. Expression of recombinant genes containing herpes simplex virus delayed-early and immediate-early regulatory regions and trans activation by herpesvirus infection. J Virol. 1984 Nov;52(2):522–531. doi: 10.1128/jvi.52.2.522-531.1984. [DOI] [PMC free article] [PubMed] [Google Scholar]
  27. Persson R. H., Bacchetti S., Smiley J. R. Cells that constitutively express the herpes simplex virus immediate-early protein ICP4 allow efficient activation of viral delayed-early genes in trans. J Virol. 1985 May;54(2):414–421. doi: 10.1128/jvi.54.2.414-421.1985. [DOI] [PMC free article] [PubMed] [Google Scholar]
  28. Perucho M., Hanahan D., Wigler M. Genetic and physical linkage of exogenous sequences in transformed cells. Cell. 1980 Nov;22(1 Pt 1):309–317. doi: 10.1016/0092-8674(80)90178-6. [DOI] [PubMed] [Google Scholar]
  29. Preston C. M. Control of herpes simplex virus type 1 mRNA synthesis in cells infected with wild-type virus or the temperature-sensitive mutant tsK. J Virol. 1979 Jan;29(1):275–284. doi: 10.1128/jvi.29.1.275-284.1979. [DOI] [PMC free article] [PubMed] [Google Scholar]
  30. Reddehase M. J., Bühring H. J., Koszinowski U. H. Cloned long-term cytolytic T-lymphocyte line with specificity for an immediate-early membrane antigen of murine cytomegalovirus. J Virol. 1986 Jan;57(1):408–412. doi: 10.1128/jvi.57.1.408-412.1986. [DOI] [PMC free article] [PubMed] [Google Scholar]
  31. Reddehase M. J., Keil G. M., Koszinowski U. H. The cytolytic T lymphocyte response to the murine cytomegalovirus. II. Detection of virus replication stage-specific antigens by separate populations of in vivo active cytolytic T lymphocyte precursors. Eur J Immunol. 1984 Jan;14(1):56–61. doi: 10.1002/eji.1830140111. [DOI] [PubMed] [Google Scholar]
  32. Reddehase M. J., Koszinowski U. H. Significance of herpesvirus immediate early gene expression in cellular immunity to cytomegalovirus infection. Nature. 1984 Nov 22;312(5992):369–371. doi: 10.1038/312369a0. [DOI] [PubMed] [Google Scholar]
  33. Reddehase M. J., Weiland F., Münch K., Jonjic S., Lüske A., Koszinowski U. H. Interstitial murine cytomegalovirus pneumonia after irradiation: characterization of cells that limit viral replication during established infection of the lungs. J Virol. 1985 Aug;55(2):264–273. doi: 10.1128/jvi.55.2.264-273.1985. [DOI] [PMC free article] [PubMed] [Google Scholar]
  34. Stenberg R. M., Thomsen D. R., Stinski M. F. Structural analysis of the major immediate early gene of human cytomegalovirus. J Virol. 1984 Jan;49(1):190–199. doi: 10.1128/jvi.49.1.190-199.1984. [DOI] [PMC free article] [PubMed] [Google Scholar]
  35. Stinski M. F., Thomsen D. R., Stenberg R. M., Goldstein L. C. Organization and expression of the immediate early genes of human cytomegalovirus. J Virol. 1983 Apr;46(1):1–14. doi: 10.1128/jvi.46.1.1-14.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
  36. Stratowa C., Doehmer J., Wang Y., Hofschneider P. H. Recombinant retroviral DNA yielding high expression of hepatitis B surface antigen. EMBO J. 1982;1(12):1573–1578. doi: 10.1002/j.1460-2075.1982.tb01357.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  37. Watson R. J., Clements J. B. A herpes simplex virus type 1 function continuously required for early and late virus RNA synthesis. Nature. 1980 May 29;285(5763):329–330. doi: 10.1038/285329a0. [DOI] [PubMed] [Google Scholar]

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