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. 1985 Mar;5(3):438–447. doi: 10.1128/mcb.5.3.438

Functional analysis of the transcription control region located within the avian retroviral long terminal repeat.

B R Cullen, K Raymond, G Ju
PMCID: PMC366735  PMID: 2985953

Abstract

We used several quantitative assays of in vivo transient gene expression to dissect the elements within the Rous sarcoma virus long terminal repeat (LTR) which constitute the retroviral transcription control region. Site-directed deletion mutagenesis was used to locate and define the enhancer and promoter elements within the LTR. In addition, we inserted exogenous DNA fragments into the LTR to examine the effects of position and sequence on the activity of these LTR transcriptional elements. The Rous sarcoma virus enhancer element, which we propose is located entirely within the LTR, was shown to activate both the beta-globin and retroviral LTR promoters when located in cis. We observed a striking correlation between the degree of activation and the distance between the retroviral promoter and enhancer elements. The LTR promoter element mediated the activation effect of the enhancer element, as LTR deletion mutants containing only the enhancer and TATA box region expressed little activity. The promoter region encoded a low but significant level of transcriptional activity even in the absence of an enhancer. Overall LTR transcriptional activity declined sharply with increasing distance between the LTR promoter and initiator elements. These results shed light on both the importance of the spatial arrangement of the sequence elements within this eucaryotic transcription control region and on the functional interrelationship between these elements.

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Selected References

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

  1. Banerji J., Olson L., Schaffner W. A lymphocyte-specific cellular enhancer is located downstream of the joining region in immunoglobulin heavy chain genes. Cell. 1983 Jul;33(3):729–740. doi: 10.1016/0092-8674(83)90015-6. [DOI] [PubMed] [Google Scholar]
  2. Banerji J., Rusconi S., Schaffner W. Expression of a beta-globin gene is enhanced by remote SV40 DNA sequences. Cell. 1981 Dec;27(2 Pt 1):299–308. doi: 10.1016/0092-8674(81)90413-x. [DOI] [PubMed] [Google Scholar]
  3. Benoist C., Chambon P. In vivo sequence requirements of the SV40 early promotor region. Nature. 1981 Mar 26;290(5804):304–310. doi: 10.1038/290304a0. [DOI] [PubMed] [Google Scholar]
  4. Berg P. E., Yu J. K., Popovic Z., Schumperli D., Johansen H., Rosenberg M., Anderson W. F. Differential activation of the mouse beta-globin promoter by enhancers. Mol Cell Biol. 1983 Jul;3(7):1246–1254. doi: 10.1128/mcb.3.7.1246. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Byrne B. J., Davis M. S., Yamaguchi J., Bergsma D. J., Subramanian K. N. Definition of the simian virus 40 early promoter region and demonstration of a host range bias in the enhancement effect of the simian virus 40 72-base-pair repeat. Proc Natl Acad Sci U S A. 1983 Feb;80(3):721–725. doi: 10.1073/pnas.80.3.721. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Capecchi M. R. High efficiency transformation by direct microinjection of DNA into cultured mammalian cells. Cell. 1980 Nov;22(2 Pt 2):479–488. doi: 10.1016/0092-8674(80)90358-x. [DOI] [PubMed] [Google Scholar]
  7. Corden J., Wasylyk B., Buchwalder A., Sassone-Corsi P., Kedinger C., Chambon P. Promoter sequences of eukaryotic protein-coding genes. Science. 1980 Sep 19;209(4463):1406–1414. doi: 10.1126/science.6251548. [DOI] [PubMed] [Google Scholar]
  8. Cullen B. R., Kopchick J. J., Stacey D. W. Effect of intron size on splicing efficiency in retroviral transcripts. Nucleic Acids Res. 1982 Oct 11;10(19):6177–6190. doi: 10.1093/nar/10.19.6177. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Cullen B. R., Lomedico P. T., Ju G. Transcriptional interference in avian retroviruses--implications for the promoter insertion model of leukaemogenesis. Nature. 1984 Jan 19;307(5948):241–245. doi: 10.1038/307241a0. [DOI] [PubMed] [Google Scholar]
  10. Cullen B. R., Raymond K., Ju G. Transcriptional activity of avian retroviral long terminal repeats directly correlates with enhancer activity. J Virol. 1985 Feb;53(2):515–521. doi: 10.1128/jvi.53.2.515-521.1985. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Cullen B. R., Skalka A. M., Ju G. Endogenous avian retroviruses contain deficient promoter and leader sequences. Proc Natl Acad Sci U S A. 1983 May;80(10):2946–2950. doi: 10.1073/pnas.80.10.2946. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Dierks P., van Ooyen A., Cochran M. D., Dobkin C., Reiser J., Weissmann C. Three regions upstream from the cap site are required for efficient and accurate transcription of the rabbit beta-globin gene in mouse 3T6 cells. Cell. 1983 Mar;32(3):695–706. doi: 10.1016/0092-8674(83)90055-7. [DOI] [PubMed] [Google Scholar]
  13. Dierks P., van Ooyen A., Mantei N., Weissmann C. DNA sequences preceding the rabbit beta-globin gene are required for formation in mouse L cells of beta-globin RNA with the correct 5' terminus. Proc Natl Acad Sci U S A. 1981 Mar;78(3):1411–1415. doi: 10.1073/pnas.78.3.1411. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. Episkopou V., Murphy A. J., Efstratiadis A. Cell-specified expression of a selectable hybrid gene. Proc Natl Acad Sci U S A. 1984 Aug;81(15):4657–4661. doi: 10.1073/pnas.81.15.4657. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Gillies S. D., Morrison S. L., Oi V. T., Tonegawa S. A tissue-specific transcription enhancer element is located in the major intron of a rearranged immunoglobulin heavy chain gene. Cell. 1983 Jul;33(3):717–728. doi: 10.1016/0092-8674(83)90014-4. [DOI] [PubMed] [Google Scholar]
  16. Gilmartin G. M., Parsons J. T. Identification of transcriptional elements within the long terminal repeat of Rous sarcoma virus. Mol Cell Biol. 1983 Oct;3(10):1834–1845. doi: 10.1128/mcb.3.10.1834. [DOI] [PMC free article] [PubMed] [Google Scholar]
  17. Gorman C. M., Merlino G. T., Willingham M. C., Pastan I., Howard B. H. The Rous sarcoma virus long terminal repeat is a strong promoter when introduced into a variety of eukaryotic cells by DNA-mediated transfection. Proc Natl Acad Sci U S A. 1982 Nov;79(22):6777–6781. doi: 10.1073/pnas.79.22.6777. [DOI] [PMC free article] [PubMed] [Google Scholar]
  18. Grosschedl R., Birnstiel M. L. Identification of regulatory sequences in the prelude sequences of an H2A histone gene by the study of specific deletion mutants in vivo. Proc Natl Acad Sci U S A. 1980 Mar;77(3):1432–1436. doi: 10.1073/pnas.77.3.1432. [DOI] [PMC free article] [PubMed] [Google Scholar]
  19. Hayward W. S. Size and genetic content of viral RNAs in avian oncovirus-infected cells. J Virol. 1977 Oct;24(1):47–63. doi: 10.1128/jvi.24.1.47-63.1977. [DOI] [PMC free article] [PubMed] [Google Scholar]
  20. Hishinuma F., DeBona P. J., Astrin S., Skalka A. M. Nucleotide sequence of acceptor site and termini of integrated avian endogenous provirus ev1: integration creates a 6 bp repeat of host DNA. Cell. 1981 Jan;23(1):155–164. doi: 10.1016/0092-8674(81)90280-4. [DOI] [PubMed] [Google Scholar]
  21. Humphries R. K., Ley T., Turner P., Moulton A. D., Nienhuis A. W. Differences in human alpha-, beta- and delta-globin gene expression in monkey kidney cells. Cell. 1982 Aug;30(1):173–183. doi: 10.1016/0092-8674(82)90023-x. [DOI] [PubMed] [Google Scholar]
  22. Ju G., Boone L., Skalka A. M. Isolation and characterization of recombinant DNA clones of avian retroviruses: size heterogeneity and instability of the direct repeat. J Virol. 1980 Mar;33(3):1026–1033. doi: 10.1128/jvi.33.3.1026-1033.1980. [DOI] [PMC free article] [PubMed] [Google Scholar]
  23. Ju G., Skalka A. M. Nucleotide sequence analysis of the long terminal repeat (LTR) of avian retroviruses: structural similarities with transposable elements. Cell. 1980 Nov;22(2 Pt 2):379–386. doi: 10.1016/0092-8674(80)90348-7. [DOI] [PubMed] [Google Scholar]
  24. Khoury G., Gruss P. Enhancer elements. Cell. 1983 Jun;33(2):313–314. doi: 10.1016/0092-8674(83)90410-5. [DOI] [PubMed] [Google Scholar]
  25. 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]
  26. Laimins L. A., Tsichlis P., Khoury G. Multiple enhancer domains in the 3' terminus of the Prague strain of Rous sarcoma virus. Nucleic Acids Res. 1984 Aug 24;12(16):6427–6442. doi: 10.1093/nar/12.16.6427. [DOI] [PMC free article] [PubMed] [Google Scholar]
  27. Lomedico P. T. Use of recombinant DNA technology to program eukaryotic cells to synthesize rat proinsulin: a rapid expression assay for cloned genes. Proc Natl Acad Sci U S A. 1982 Oct;79(19):5798–5802. doi: 10.1073/pnas.79.19.5798. [DOI] [PMC free article] [PubMed] [Google Scholar]
  28. Luciw P. A., Bishop J. M., Varmus H. E., Capecchi M. R. Location and function of retroviral and SV40 sequences that enhance biochemical transformation after microinjection of DNA. Cell. 1983 Jul;33(3):705–716. doi: 10.1016/0092-8674(83)90013-2. [DOI] [PubMed] [Google Scholar]
  29. Maxam A. M., Gilbert W. A new method for sequencing DNA. Proc Natl Acad Sci U S A. 1977 Feb;74(2):560–564. doi: 10.1073/pnas.74.2.560. [DOI] [PMC free article] [PubMed] [Google Scholar]
  30. McKnight S. L. Functional relationships between transcriptional control signals of the thymidine kinase gene of herpes simplex virus. Cell. 1982 Dec;31(2 Pt 1):355–365. doi: 10.1016/0092-8674(82)90129-5. [DOI] [PubMed] [Google Scholar]
  31. McKnight S. L., Kingsbury R. Transcriptional control signals of a eukaryotic protein-coding gene. Science. 1982 Jul 23;217(4557):316–324. doi: 10.1126/science.6283634. [DOI] [PubMed] [Google Scholar]
  32. Mitsialis S. A., Caplan S., Guntaka R. V. An upstream regulatory domain of avian tumor virus long terminal repeat is required for the expression of a procaryotic neomycin gene in eucaryotic cells. Mol Cell Biol. 1983 Nov;3(11):1975–1984. doi: 10.1128/mcb.3.11.1975. [DOI] [PMC free article] [PubMed] [Google Scholar]
  33. Moreau P., Hen R., Wasylyk B., Everett R., Gaub M. P., Chambon P. The SV40 72 base repair repeat has a striking effect on gene expression both in SV40 and other chimeric recombinants. Nucleic Acids Res. 1981 Nov 25;9(22):6047–6068. doi: 10.1093/nar/9.22.6047. [DOI] [PMC free article] [PubMed] [Google Scholar]
  34. Nordheim A., Rich A. Negatively supercoiled simian virus 40 DNA contains Z-DNA segments within transcriptional enhancer sequences. Nature. 1983 Jun 23;303(5919):674–679. doi: 10.1038/303674a0. [DOI] [PubMed] [Google Scholar]
  35. Pelham H. R. A regulatory upstream promoter element in the Drosophila hsp 70 heat-shock gene. Cell. 1982 Sep;30(2):517–528. doi: 10.1016/0092-8674(82)90249-5. [DOI] [PubMed] [Google Scholar]
  36. Picard D., Schaffner W. Correct transcription of a cloned mouse immunoglobulin gene in vivo. Proc Natl Acad Sci U S A. 1983 Jan;80(2):417–421. doi: 10.1073/pnas.80.2.417. [DOI] [PMC free article] [PubMed] [Google Scholar]
  37. Scholl D. R., Kahn S., Malavarca R., Astrin S., Skalka A. M. Nucleotide sequence of the long terminal repeat and flanking cellular sequences of avian endogenous retrovirus ev-2: variation in Rous-associated virus-0 expression cannot be explained by differences in primary sequence. J Virol. 1983 Feb;45(2):868–871. doi: 10.1128/jvi.45.2.868-871.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
  38. Shibuya M., Hanafusa H. Nucleotide sequence of Fujinami sarcoma virus: evolutionary relationship of its transforming gene with transforming genes of other sarcoma viruses. Cell. 1982 Oct;30(3):787–795. doi: 10.1016/0092-8674(82)90283-5. [DOI] [PubMed] [Google Scholar]
  39. Sorge J., Ricci W., Hughes S. H. cis-Acting RNA packaging locus in the 115-nucleotide direct repeat of Rous sarcoma virus. J Virol. 1983 Dec;48(3):667–675. doi: 10.1128/jvi.48.3.667-675.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
  40. Srinivasan A., Reddy E. P., Dunn C. Y., Aaronson S. A. Molecular dissection of transcriptional control elements within the long terminal repeat of the retrovirus. Science. 1984 Jan 20;223(4633):286–289. doi: 10.1126/science.6322296. [DOI] [PubMed] [Google Scholar]
  41. Stacey D. W., Allfrey V. G., Hanafusa H. Microinjection analysis of envelope-glycoprotein messenger activities of avian leukosis viral RNAs. Proc Natl Acad Sci U S A. 1977 Apr;74(4):1614–1618. doi: 10.1073/pnas.74.4.1614. [DOI] [PMC free article] [PubMed] [Google Scholar]
  42. Thirion J. P., Banville D., Noel H. Galactokinase mutants of Chinese hamster somatic cells resistant to 2-deoxygalactose. Genetics. 1976 May;83(1):137–147. doi: 10.1093/genetics/83.1.137. [DOI] [PMC free article] [PubMed] [Google Scholar]
  43. Treisman R., Green M. R., Maniatis T. cis and trans activation of globin gene transcription in transient assays. Proc Natl Acad Sci U S A. 1983 Dec;80(24):7428–7432. doi: 10.1073/pnas.80.24.7428. [DOI] [PMC free article] [PubMed] [Google Scholar]
  44. Tsichlis P. N., Donehower L., Hager G., Zeller N., Malavarca R., Astrin S., Skalka A. M. Sequence comparison in the crossover region of an oncogenic avian retrovirus recombinant and its nononcogenic parent: genetic regions that control growth rate and oncogenic potential. Mol Cell Biol. 1982 Nov;2(11):1331–1338. doi: 10.1128/mcb.2.11.1331. [DOI] [PMC free article] [PubMed] [Google Scholar]
  45. Walker M. D., Edlund T., Boulet A. M., Rutter W. J. Cell-specific expression controlled by the 5'-flanking region of insulin and chymotrypsin genes. Nature. 1983 Dec 8;306(5943):557–561. doi: 10.1038/306557a0. [DOI] [PubMed] [Google Scholar]
  46. Wasylyk B., Wasylyk C., Augereau P., Chambon P. The SV40 72 bp repeat preferentially potentiates transcription starting from proximal natural or substitute promoter elements. Cell. 1983 Feb;32(2):503–514. doi: 10.1016/0092-8674(83)90470-1. [DOI] [PubMed] [Google Scholar]
  47. Wasylyk B., Wasylyk C., Chambon P. Short and long range activation by the SV40 enhancer. Nucleic Acids Res. 1984 Jul 25;12(14):5589–5608. doi: 10.1093/nar/12.14.5589. [DOI] [PMC free article] [PubMed] [Google Scholar]
  48. Westaway D., Payne G., Varmus H. E. Proviral deletions and oncogene base-substitutions in insertionally mutagenized c-myc alleles may contribute to the progression of avian bursal tumors. Proc Natl Acad Sci U S A. 1984 Feb;81(3):843–847. doi: 10.1073/pnas.81.3.843. [DOI] [PMC free article] [PubMed] [Google Scholar]
  49. Wigler M., Pellicer A., Silverstein S., Axel R., Urlaub G., Chasin L. DNA-mediated transfer of the adenine phosphoribosyltransferase locus into mammalian cells. Proc Natl Acad Sci U S A. 1979 Mar;76(3):1373–1376. doi: 10.1073/pnas.76.3.1373. [DOI] [PMC free article] [PubMed] [Google Scholar]

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