Abstract
The state of integration of avian sarcoma virus DNA in the genomes of transformed chicken, duck, and quail fibroblasts was deduced by means of restriction enzyme digestion of total cell DNA, gel electrophoresis, and subsequent analysis by the procedure of Southern. The cells used in these studies were either mass-infected cultures or clones of infected cells selected by their ability to form colonies in agar. For both mass-infected cultures and clones of cells of all three species, we found that integration occurred at a specific site on the viral genome but appeared to occur at many sites on the cell genome. At least some of the integrated viral DNA existed as intact nonpermuted species flanked by direct terminal repeats of at least 0.134 megadalton (217 base pairs). For each of 12 transformed quail clones studied, it was possible to detect, after digestion with Kpn I, unique junctions between viral and cellular DNA. That is, at our level of analysis, the integration site on the cell genome for each clone was different. However, within each of the 17 chicken and 9 duck clones of transformed cells, a heterogeneity presumably occurred during the outgrowth of the cell clone population, in that we could not readily detect identifiable cell-virus junction fragments.
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- Collins C. J., Parsons J. T. Integration of avian sarcoma virus DNA sequences in transformed mammalian cells. Proc Natl Acad Sci U S A. 1977 Oct;74(10):4301–4305. doi: 10.1073/pnas.74.10.4301. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Doi R. H. Role of ribonucleic acid polymerase in gene selection in procaryotes. Bacteriol Rev. 1977 Sep;41(3):568–594. doi: 10.1128/br.41.3.568-594.1977. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Duesberg P. H., Vogt P. K. RNA species obtained from clonal lines of avian sarcoma and from avian leukosis virus. Virology. 1973 Jul;54(1):207–219. doi: 10.1016/0042-6822(73)90130-x. [DOI] [PubMed] [Google Scholar]
- Fan H., Baltimore D. RNA metabolism of murine leukemia virus: detection of virus-specific RNA sequences in infected and uninfected cells and identification of virus-specific messenger RNA. J Mol Biol. 1973 Oct 15;80(1):93–117. doi: 10.1016/0022-2836(73)90235-0. [DOI] [PubMed] [Google Scholar]
- Finnegan D. J., Rubin G. M., Young M. W., Hogness D. S. Repeated gene families in Drosophila melanogaster. Cold Spring Harb Symp Quant Biol. 1978;42(Pt 2):1053–1063. doi: 10.1101/sqb.1978.042.01.106. [DOI] [PubMed] [Google Scholar]
- Guntaka R. V., Richards O. C., Shank P. R., Kung H. J., Davidson N. Covalently closed circular DNA of avian sarcoma virus: purification from nuclei of infected quail tumor cells and measurement by electron microscopy and gel electrophoresis. J Mol Biol. 1976 Sep 15;106(2):337–357. doi: 10.1016/0022-2836(76)90090-5. [DOI] [PubMed] [Google Scholar]
- Haseltine W. A., Baltimore D. Size of murine RNA tumor virus-specific nuclear RNA molecules. J Virol. 1976 Aug;19(2):331–337. doi: 10.1128/jvi.19.2.331-337.1976. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hsu T. W., Sabran J. L., Mark G. E., Guntaka R. V., Taylor J. M. Analysis of unintegrated avian RNA tumor virus double-stranded DNA intermediates. J Virol. 1978 Dec;28(3):810–818. doi: 10.1128/jvi.28.3.810-818.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lai M. M., Hu S. S., Vogt P. K. Occurrence of partial deletion and substitution of the src gene in the RNA genome of avian sarcoma virus. Proc Natl Acad Sci U S A. 1977 Nov;74(11):4781–4785. doi: 10.1073/pnas.74.11.4781. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Leong J. A., Garapin A. C., Jackson N., Fanshier L., Levinson W., Bishop J. M. Virus-specific ribonucleic acid in cells producing rous sarcoma virus: detection and characterization. J Virol. 1972 Jun;9(6):891–902. doi: 10.1128/jvi.9.6.891-902.1972. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Mason W. S., Yeater C. A mutant of Rous sarcoma virus with a conditional defect in the determinant(s) of viral host range. Virology. 1977 Apr;77(2):443–456. doi: 10.1016/0042-6822(77)90470-6. [DOI] [PubMed] [Google Scholar]
- McDonell M. W., Simon M. N., Studier F. W. Analysis of restriction fragments of T7 DNA and determination of molecular weights by electrophoresis in neutral and alkaline gels. J Mol Biol. 1977 Feb 15;110(1):119–146. doi: 10.1016/s0022-2836(77)80102-2. [DOI] [PubMed] [Google Scholar]
- Neiman P. E. Measurement of endogenous leukosis virus nucleotide sequences in the DNA of normal avian embryos by RNA-DNA hybridization. Virology. 1973 May;53(1):196–203. doi: 10.1016/0042-6822(73)90478-9. [DOI] [PubMed] [Google Scholar]
- Schwartz D. E., Zamecnik P. C., Weith H. L. Rous sarcoma virus genome is terminally redundant: the 3' sequence. Proc Natl Acad Sci U S A. 1977 Mar;74(3):994–998. doi: 10.1073/pnas.74.3.994. [DOI] [PMC free article] [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]
- Stehelin D., Guntaka R. V., Varmus H. E., Bishop J. M. Purification of DNA complementary to nucleotide sequences required for neoplastic transformation of fibroblasts by avian sarcoma viruses. J Mol Biol. 1976 Mar 5;101(3):349–365. doi: 10.1016/0022-2836(76)90152-2. [DOI] [PubMed] [Google Scholar]
- Tartof K. D. Redundant genes. Annu Rev Genet. 1975;9:355–385. doi: 10.1146/annurev.ge.09.120175.002035. [DOI] [PubMed] [Google Scholar]
- Taylor J. M., Hsu T. W., Lai M. M. Restriction enzyme sites on the avian RNA tumor virus genome. J Virol. 1978 May;26(2):479–484. doi: 10.1128/jvi.26.2.479-484.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Weinberg R. A. Structure of the intermediates leading to the integrated provirus. Biochim Biophys Acta. 1977 Mar 21;473(1):39–55. doi: 10.1016/0304-419x(77)90006-3. [DOI] [PubMed] [Google Scholar]
- Weiss R. A., Mason W. S., Vogt P. K. Genetic recombinants and heterozygotes derived from endogenous and exogenous avian RNA tumor viruses. Virology. 1973 Apr;52(2):535–552. doi: 10.1016/0042-6822(73)90349-8. [DOI] [PubMed] [Google Scholar]
- Wyke J. A., Linial M. Temperature-sensitive avian sarcoma viruses: a physiological comparison of twenty mutants. Virology. 1973 May;53(1):152–161. doi: 10.1016/0042-6822(73)90474-1. [DOI] [PubMed] [Google Scholar]