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  • 1985-1989  (3)
Materialart
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Erscheinungszeitraum
  • 1985-1989  (3)
Jahr
FID
Fachgebiete(RVK)
  • 1
    Online-Ressource
    Online-Ressource
    Replication-competent Moloney murine leukemia virus carrying a bacterial suppressor tRNA gene: selective cloning of proviral and flanking host sequences.
    Proceedings of the National Academy of Sciences ; 1985
    In:  Proceedings of the National Academy of Sciences Vol. 82, No. 4 ( 1985-02), p. 1141-1145
    Details
    In: Proceedings of the National Academy of Sciences, Proceedings of the National Academy of Sciences, Vol. 82, No. 4 ( 1985-02), p. 1141-1145
    Kurzfassung: A bacterial suppressor tRNA gene was introduced into the long terminal repeat of the Moloney murine leukemia virus (Mo-MuLV) proviral genome to construct a retrovirus that allows easy cloning of the provirus with flanking host sequences. A replication competent virus, Mo-MuLV sup containing a tRNA amber suppressor gene, was derived that replicates to high titers in tissue culture cells and stably transduces the bacterial gene. The recombinant virus can efficiently replicate in vivo when microinjected into midgestation embryos or when injected into newborn mice and displays the same tissue tropism as wild-type Mo-MuLV. The suppressor gene in Mo-MuLV sup is functional in bacteria and allows efficient recovery of proviral genomes. This was shown by ligation of DNA from infected cells to phage lambda Charon 4A arms and selective growth of recombinant phages on su- host cells. All recovered phages contained Mo-MuLV proviral sequences and, because of the high cloning capacity of phage lambda, 1-11 kilobases of flanking host DNA. This virus should facilitate studying virus-host interactions in tissue culture cells and in animals.
    Materialart: Online-Ressource
    ISSN: 0027-8424 , 1091-6490
    URL: Article
    DOI: 10.1073/pnas.82.4.1141
    RVK:
    TA 1000
    RVK:
    WA 15000
    Sprache: Englisch
    Verlag: Proceedings of the National Academy of Sciences
    Publikationsdatum: 1985
    ZDB Id: 209104-5
    ZDB Id: 1461794-8
    SSG: 11
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
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    Online-Ressource
  • 2
    Online-Ressource
    Online-Ressource
    Two distinct sequence elements mediate retroviral gene expression in embryonal carcinoma cells
    American Society for Microbiology ; 1987
    In:  Journal of Virology Vol. 61, No. 9 ( 1987-09), p. 2742-2746
    Details
    In: Journal of Virology, American Society for Microbiology, Vol. 61, No. 9 ( 1987-09), p. 2742-2746
    Kurzfassung: Moloney murine leukemia virus (M-MuLV) and M-MuLV-derived retroviral vectors are not expressed in early mouse embryos or in embryonal carcinoma cells. M-MuLV-derived mutants or M-MuLV-related variants which transduce the neomycin phosphotransferase gene can, however, induce drug resistance in embryonal carcinoma cells with high efficiency. In this study we investigated the sequences critical for retroviral gene expression in two different embryonal carcinoma cell lines, F9 and PCC4. We show that two synergistically acting sequence elements mediate expression in embryonal carcinoma cells. One of these is located within the U3 region of the viral long terminal repeat, and the second one is in the 5' untranslated region of the retrovirus. The latter element, characterized by a single point mutation, affects the level of stable RNA in infected cells, suggesting a regulatory mechanism similar to that of human immunodeficiency virus in human T cells.
    Materialart: Online-Ressource
    ISSN: 0022-538X , 1098-5514
    URL: Article
    DOI: 10.1128/jvi.61.9.2742-2746.1987
    Sprache: Englisch
    Verlag: American Society for Microbiology
    Publikationsdatum: 1987
    ZDB Id: 1495529-5
    Standort Signatur Einschränkungen Verfügbarkeit
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    Online-Ressource
  • 3
    Online-Ressource
    Online-Ressource
    Retrovirus integration and chromatin structure: Moloney murine leukemia proviral integration sites map near DNase I-hypersensitive sites
    American Society for Microbiology ; 1987
    In:  Journal of Virology Vol. 61, No. 2 ( 1987-02), p. 336-343
    Details
    In: Journal of Virology, American Society for Microbiology, Vol. 61, No. 2 ( 1987-02), p. 336-343
    Kurzfassung: The chromatin conformation of mouse genome regions containing Moloney murine leukemia proviral intergration sites in two Mov mouse strains and randomly selected integration sites in virus-infected mouse 3T3 fibroblasts was analyzed. All integrations have occurred into chromosomal regions containing several DNase-hypersensitive sites, and invariably the proviral integration sites map within a few hundred base pairs of a DNase-hypersensitive site. The probability that this close association between proviral integration sites and DNase-hypersensitive sites was due to chance was calculated to be extremely low (2 X 10(-4]. Because the proviral integrations analyzed were not selected for an altered phenotype, our results suggest that DNase-hypersensitive regions are preferred targets for retrovirus integration.
    Materialart: Online-Ressource
    ISSN: 0022-538X , 1098-5514
    URL: Article
    DOI: 10.1128/jvi.61.2.336-343.1987
    Sprache: Englisch
    Verlag: American Society for Microbiology
    Publikationsdatum: 1987
    ZDB Id: 1495529-5
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
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