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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
1
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pubmed:dateCreated |
1988-1-21
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pubmed:abstractText |
Alteration of the growth properties of the established murine fibroblast cell lines NIH 3T3 and 3Y1 was studied in monolayer cultures and in cells suspended in semisolid medium after introduction of a cloned human papillomavirus type 16 (HPV16) DNA. HPV 16 DNA stimulated both cell lines to grow beyond their saturation densities in monolayer cultures without any apparent morphological changes or tendency to pile up. These cells were also stimulated to grow in soft agar. Since essentially all the cells that received the viral gene were stimulated to grow, the growth-stimulatory activity of HPV16 appeared to be due to the direct effect of a viral gene function. The NIH 3T3 cells showed an additional change in growth properties upon prolonged incubation of dense monolayers of cells containing the HPV16 DNA; morphologically recognizable dense foci appeared at a frequency of about 10(-3). These cells, when cloned from the foci, grew more rapidly in soft agar than the parental cells and were morphologically transformed. In other words, there were two sequential steps in cell transformation induced by HPV16. Practically all the viral DNAs were present in the cells as large rearranged multimers and were integrated into host chromosomal DNA. There was no obvious difference in the state of viral DNA in the cells of the original clone or the three subclones derived from it as dense foci. There was no difference in the amount or the number of viral RNA species expressed in the cells at these two stages. The secondary changes in the growth properties of NIH 3T3 cells appear to be due to some cellular alterations.
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pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/2824852-1195397,
http://linkedlifedata.com/resource/pubmed/commentcorrection/2824852-166944,
http://linkedlifedata.com/resource/pubmed/commentcorrection/2824852-17796848,
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
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pubmed:status |
MEDLINE
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pubmed:month |
Jan
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pubmed:issn |
0022-538X
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:volume |
62
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
313-24
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pubmed:dateRevised |
2010-9-10
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pubmed:meshHeading |
pubmed-meshheading:2824852-Animals,
pubmed-meshheading:2824852-Cell Division,
pubmed-meshheading:2824852-Cell Line,
pubmed-meshheading:2824852-Cell Transformation, Viral,
pubmed-meshheading:2824852-Cloning, Molecular,
pubmed-meshheading:2824852-DNA, Viral,
pubmed-meshheading:2824852-Genes, Viral,
pubmed-meshheading:2824852-Mice,
pubmed-meshheading:2824852-Papillomaviridae,
pubmed-meshheading:2824852-RNA, Viral,
pubmed-meshheading:2824852-Rats,
pubmed-meshheading:2824852-Recombination, Genetic,
pubmed-meshheading:2824852-Transfection
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pubmed:year |
1988
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pubmed:articleTitle |
Progression of the phenotype of transformed cells after growth stimulation of cells by a human papillomavirus type 16 gene function.
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pubmed:affiliation |
Institute for Virus Research, Kyoto University, Japan.
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