Abstract
The glucocorticoid-regulatory sequences from the murine mammary tumor virus long terminal repeat (MMTV LTR) were introduced into the LTR of Moloney murine leukemia virus (M-MuLV) by recombinant DNA techniques. The site of insertion was in the M-MuLV LTR U3 region at -150 base pairs with respect to the RNA cap site. Infectious M-MuLVs carrying the altered LTRs (Mo + MMTV M-MuLVs) were recovered by transfection of proviral clones into NIH-3T3 cells. The Mo + MMTV M-MuLVs were hormonally responsive in that infection was 3 logs more efficient when performed in the presence of dexamethasone, irrespective of the orientation of the inserted MMTV sequences. However, even in the presence of hormone, the Mo + MMTV M-MuLVs were less infectious than wild-type M-MuLV. In contrast to the large effect on infectivity, dexamethasone induced virus-specific RNA levels in chronically Mo + MMTV M-MuLV-infected cells only two- to fourfold. Fusion plasmids between the altered LTRs and the bacterial chloramphenicol acetyltransferase gene allowed the investigation of LTR promoter strength by the transient chloramphenicol acetyltransferase expression assay. The chloramphenicol acetyltransferase assays indicated that the insertion of MMTV sequences into the M-MuLV LTR reduced promoter activity in the absence of glucocorticoids but that promoter activity could be induced two- to fivefold by dexamethasone. The Mo + MMTV M-MuLVs were also tested for the possibility that viral DNA synthesis or integration during initial infection was enhanced by dexamethasone. However, no significant difference was detected between cultures infected in the presence or absence of hormone. The insertion of MMTV sequences into an M-MuLV LTR deleted of its enhancer sequences did not yield infectious virus or active promoters, even in the presence of dexamethasone.
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Selected References
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- Bacheler L., Fan H. Isolation of recombinant DNA clones carrying complete integrated proviruses of Moloney murine leukemia virus. J Virol. 1981 Jan;37(1):181–190. doi: 10.1128/jvi.37.1.181-190.1981. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Berns A. J., Lai M. H., Bosselman R. A., McKennett M. A., Bacheler L. T., Fan H., Maandag E. C., van der Putten H. V., Verma I. M. Molecular cloning of unintegrated and a portion of integrated moloney murine leukemia viral DNA in bacteriophage lambda. J Virol. 1980 Oct;36(1):254–263. doi: 10.1128/jvi.36.1.254-263.1980. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Birnboim H. C., Doly J. A rapid alkaline extraction procedure for screening recombinant plasmid DNA. Nucleic Acids Res. 1979 Nov 24;7(6):1513–1523. doi: 10.1093/nar/7.6.1513. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Chandler V. L., Maler B. A., Yamamoto K. R. DNA sequences bound specifically by glucocorticoid receptor in vitro render a heterologous promoter hormone responsive in vivo. Cell. 1983 Jun;33(2):489–499. doi: 10.1016/0092-8674(83)90430-0. [DOI] [PubMed] [Google Scholar]
- Cooper G. M., Okenquist S. Mechanism of transfection of chicken embryo fibroblasts by Rous sarcoma virus DNA. J Virol. 1978 Oct;28(1):45–52. doi: 10.1128/jvi.28.1.45-52.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Cuypers H. T., Selten G., Quint W., Zijlstra M., Maandag E. R., Boelens W., van Wezenbeek P., Melief C., Berns A. Murine leukemia virus-induced T-cell lymphomagenesis: integration of proviruses in a distinct chromosomal region. Cell. 1984 May;37(1):141–150. doi: 10.1016/0092-8674(84)90309-x. [DOI] [PubMed] [Google Scholar]
- Donehower L. A., Huang A. L., Hager G. L. Regulatory and coding potential of the mouse mammary tumor virus long terminal redundancy. J Virol. 1981 Jan;37(1):226–238. doi: 10.1128/jvi.37.1.226-238.1981. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Fan H., Chute H., Chao E., Feuerman M. Construction and characterization of Moloney murine leukemia virus mutants unable to synthesize glycosylated gag polyprotein. Proc Natl Acad Sci U S A. 1983 Oct;80(19):5965–5969. doi: 10.1073/pnas.80.19.5965. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Fan H., Jaenisch R., MacIsaac P. Low-multiplicity infection of Moloney murine leukemia virus in mouse cells: effect on number of viral DNA copies and virus production in producer cells. J Virol. 1978 Dec;28(3):802–809. doi: 10.1128/jvi.28.3.802-809.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 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]
- 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]
- Grunstein M., Wallis J. Colony hybridization. Methods Enzymol. 1979;68:379–389. doi: 10.1016/0076-6879(79)68027-8. [DOI] [PubMed] [Google Scholar]
- Hilgers J., Bentvelzen P. Interaction between viral and genetic factors in murine mammary cancer. Adv Cancer Res. 1978;26:143–195. doi: 10.1016/s0065-230x(08)60087-1. [DOI] [PubMed] [Google Scholar]
- Hirt B. Selective extraction of polyoma DNA from infected mouse cell cultures. J Mol Biol. 1967 Jun 14;26(2):365–369. doi: 10.1016/0022-2836(67)90307-5. [DOI] [PubMed] [Google Scholar]
- Hynes N., van Ooyen A. J., Kennedy N., Herrlich P., Ponta H., Groner B. Subfragments of the large terminal repeat cause glucocorticoid-responsive expression of mouse mammary tumor virus and of an adjacent gene. Proc Natl Acad Sci U S A. 1983 Jun;80(12):3637–3641. doi: 10.1073/pnas.80.12.3637. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Jolly D. J., Esty A. C., Subramani S., Friedmann T., Verma I. M. Elements in the long terminal repeat of murine retroviruses enhance stable transformation by thymidine kinase gene. Nucleic Acids Res. 1983 Mar 25;11(6):1855–1872. doi: 10.1093/nar/11.6.1855. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Jones N., Shenk T. Isolation of adenovirus type 5 host range deletion mutants defective for transformation of rat embryo cells. Cell. 1979 Jul;17(3):683–689. doi: 10.1016/0092-8674(79)90275-7. [DOI] [PubMed] [Google Scholar]
- 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]
- Lee F., Mulligan R., Berg P., Ringold G. Glucocorticoids regulate expression of dihydrofolate reductase cDNA in mouse mammary tumour virus chimaeric plasmids. Nature. 1981 Nov 19;294(5838):228–232. doi: 10.1038/294228a0. [DOI] [PubMed] [Google Scholar]
- Linney E., Davis B., Overhauser J., Chao E., Fan H. Non-function of a Moloney murine leukaemia virus regulatory sequence in F9 embryonal carcinoma cells. 1984 Mar 29-Apr 4Nature. 308(5958):470–472. doi: 10.1038/308470a0. [DOI] [PubMed] [Google Scholar]
- Linney E., Donerly S. DNA fragments from F9 PyEC mutants increase expression of heterologous genes in transfected F9 cells. Cell. 1983 Dec;35(3 Pt 2):693–699. doi: 10.1016/0092-8674(83)90102-2. [DOI] [PubMed] [Google Scholar]
- MOLONEY J. B. Biological studies on a lymphoid-leukemia virus extracted from sarcoma 37. I. Origin and introductory investigations. J Natl Cancer Inst. 1960 Apr;24:933–951. [PubMed] [Google Scholar]
- MOLONEY J. B. Properties of a leukemia virus. Natl Cancer Inst Monogr. 1960 Sep;4:7–37. [PubMed] [Google Scholar]
- Majors J., Varmus H. E. A small region of the mouse mammary tumor virus long terminal repeat confers glucocorticoid hormone regulation on a linked heterologous gene. Proc Natl Acad Sci U S A. 1983 Oct;80(19):5866–5870. doi: 10.1073/pnas.80.19.5866. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Nusse R., Varmus H. E. Many tumors induced by the mouse mammary tumor virus contain a provirus integrated in the same region of the host genome. Cell. 1982 Nov;31(1):99–109. doi: 10.1016/0092-8674(82)90409-3. [DOI] [PubMed] [Google Scholar]
- Payvar F., DeFranco D., Firestone G. L., Edgar B., Wrange O., Okret S., Gustafsson J. A., Yamamoto K. R. Sequence-specific binding of glucocorticoid receptor to MTV DNA at sites within and upstream of the transcribed region. Cell. 1983 Dec;35(2 Pt 1):381–392. doi: 10.1016/0092-8674(83)90171-x. [DOI] [PubMed] [Google Scholar]
- Peters G., Brookes S., Smith R., Dickson C. Tumorigenesis by mouse mammary tumor virus: evidence for a common region for provirus integration in mammary tumors. Cell. 1983 Jun;33(2):369–377. doi: 10.1016/0092-8674(83)90418-x. [DOI] [PubMed] [Google Scholar]
- Pfahl M., McGinnis D., Hendricks M., Groner B., Hynes N. E. Correlation of glucocorticoid receptor binding sites on MMTV proviral DNA with hormone inducible transcription. Science. 1983 Dec 23;222(4630):1341–1343. doi: 10.1126/science.6318311. [DOI] [PubMed] [Google Scholar]
- Rigby P. W., Dieckmann M., Rhodes C., Berg P. Labeling deoxyribonucleic acid to high specific activity in vitro by nick translation with DNA polymerase I. J Mol Biol. 1977 Jun 15;113(1):237–251. doi: 10.1016/0022-2836(77)90052-3. [DOI] [PubMed] [Google Scholar]
- Ringold G. M., Yamamoto K. R., Bishop J. M., Varmus H. E. Glucocorticoid-stimulated accumulation of mouse mammary tumor virus RNA: increased rate of synthesis of viral RNA. Proc Natl Acad Sci U S A. 1977 Jul;74(7):2879–2883. doi: 10.1073/pnas.74.7.2879. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Ringold G. M., Yamamoto K. R., Tomkins G. M., Bishop M., Varmus H. E. Dexamethasone-mediated induction of mouse mammary tumor virus RNA: a system for studying glucocorticoid action. Cell. 1975 Nov;6(3):299–305. doi: 10.1016/0092-8674(75)90181-6. [DOI] [PubMed] [Google Scholar]
- Ringold G., Lasfargues E. Y., Bishop J. M., Varmus H. E. Production of mouse mammary tumor virus by cultured cells in the absence and presence of hormones: assay by molecular hybridization. Virology. 1975 May;65(1):135–147. doi: 10.1016/0042-6822(75)90014-8. [DOI] [PubMed] [Google Scholar]
- Rowe W. P., Pugh W. E., Hartley J. W. Plaque assay techniques for murine leukemia viruses. Virology. 1970 Dec;42(4):1136–1139. doi: 10.1016/0042-6822(70)90362-4. [DOI] [PubMed] [Google Scholar]
- Scheidereit C., Geisse S., Westphal H. M., Beato M. The glucocorticoid receptor binds to defined nucleotide sequences near the promoter of mouse mammary tumour virus. Nature. 1983 Aug 25;304(5928):749–752. doi: 10.1038/304749a0. [DOI] [PubMed] [Google Scholar]
- Southern E. M. Detection of specific sequences among DNA fragments separated by gel electrophoresis. J Mol Biol. 1975 Nov 5;98(3):503–517. doi: 10.1016/s0022-2836(75)80083-0. [DOI] [PubMed] [Google Scholar]
- Steffen D. Proviruses are adjacent to c-myc in some murine leukemia virus-induced lymphomas. Proc Natl Acad Sci U S A. 1984 Apr;81(7):2097–2101. doi: 10.1073/pnas.81.7.2097. [DOI] [PMC free article] [PubMed] [Google Scholar]
- TODARO G. J., GREEN H. Quantitative studies of the growth of mouse embryo cells in culture and their development into established lines. J Cell Biol. 1963 May;17:299–313. doi: 10.1083/jcb.17.2.299. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Thomas P. S. Hybridization of denatured RNA and small DNA fragments transferred to nitrocellulose. Proc Natl Acad Sci U S A. 1980 Sep;77(9):5201–5205. doi: 10.1073/pnas.77.9.5201. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tsichlis P. N., Strauss P. G., Kozak C. A. Cellular DNA region involved in induction of thymic lymphomas (Mlvi-2) maps to mouse chromosome 15. Mol Cell Biol. 1984 May;4(5):997–1000. doi: 10.1128/mcb.4.5.997. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Van Beveren C., Rands E., Chattopadhyay S. K., Lowy D. R., Verma I. M. Long terminal repeat of murine retroviral DNAs: sequence analysis, host-proviral junctions, and preintegration site. J Virol. 1982 Feb;41(2):542–556. doi: 10.1128/jvi.41.2.542-556.1982. [DOI] [PMC free article] [PubMed] [Google Scholar]