rdf:type |
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lifeskim:mentions |
|
pubmed:issue |
1
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pubmed:dateCreated |
1987-1-16
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pubmed:abstractText |
A derivative of the myeloproliferative sarcoma virus (Neor-MPSV) carrying the mos oncogene and dominant selection marker for neomycin resistance (Neor) was introduced into embryonal carcinoma and embryo-derived cell lines by transfection and infection using pseudotypes with Friend helper virus (Friend murine leukemia virus [F-MuLV]). Cells resistant to G418 (a neomycin analog) were cloned and expanded. Transductants retained an undifferentiated phenotype as judged by morphology, tumorigenicity, and cell-surface antigen analyses. Nucleic acid analysis of infectants revealed both Neor-MPSV and F-MuLV proviruses, although no virus was released. G418-resistant transductants remained nonpermissive for the expression of other proviruses and for subsequent superinfection. Northern analysis showed expression of full-length Neor-MPSV, as well as mos-specific subgenomic RNA. mos sequences were deleted from Neor-MPSV (Neor mos-1), and pseudotypes were used to infect embryonal carcinoma cells. No morphological differences were observed in either mos+ or mos- transductants as compared with parental cell lines. However, mos+ transductants showed an enhanced anchorage-independent growth compared with that of mos- transductants in agar cloning. PCC4 transductants were induced to differentiate with retinoic acid and superinfected with F-MuLV. Infection with viral supernatant in fibroblasts and in mice confirmed the rescue of biologically active Neor-MPSV.
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pubmed:commentsCorrections |
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pubmed:language |
eng
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pubmed:journal |
|
pubmed:citationSubset |
IM
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pubmed:chemical |
|
pubmed:status |
MEDLINE
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pubmed:month |
Jan
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pubmed:issn |
0270-7306
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pubmed:author |
|
pubmed:issnType |
Print
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pubmed:volume |
6
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
286-93
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pubmed:dateRevised |
2009-11-18
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pubmed:meshHeading |
pubmed-meshheading:3023829-Animals,
pubmed-meshheading:3023829-Cell Line,
pubmed-meshheading:3023829-Cell Transformation, Neoplastic,
pubmed-meshheading:3023829-Drug Resistance,
pubmed-meshheading:3023829-Embryo, Mammalian,
pubmed-meshheading:3023829-Genes, Viral,
pubmed-meshheading:3023829-Mice,
pubmed-meshheading:3023829-Moloney murine sarcoma virus,
pubmed-meshheading:3023829-Neomycin,
pubmed-meshheading:3023829-Oncogenes,
pubmed-meshheading:3023829-Sarcoma Viruses, Murine,
pubmed-meshheading:3023829-Teratoma,
pubmed-meshheading:3023829-Transcription, Genetic,
pubmed-meshheading:3023829-Transfection
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pubmed:year |
1986
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pubmed:articleTitle |
Viral transfer, transcription, and rescue of a selectable myeloproliferative sarcoma virus in embryonal cell lines: expression of the mos oncogene.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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