Abstract:
:The human HBL-100 cell line harbours SV40 DNA integrated in tandem at a unique site. The SV40 T-antigen expressed in these cells is defective in a function essential to the replication of the viral genome. The integrated SV40 sequences were molecularly cloned in a bacteriophage, and a subclone (plasmid pSVHBI) containing a complete SV40 DNA was isolated. As compared to SV40 wild-type strain 776, sequence analysis of pSVHBI early region revealed the presence of several DNA alterations. Among these, a point mutation at position 3199, predicting a change at amino-acid 540 of arginine to isoleucine, was shown by marker rescue to be responsible for the deficiency of T-antigen. This novel mutation further delimits one of the T-antigen domains involved in SV40 DNA replication. Transfection experiments demonstrated that the transforming activity of the SV40 genome from HBL-100 cells is still preserved. Moreover, several transformed human cell clones thus obtained could be permanently established in culture.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Saint-Ruf C,Nardeux P,Cebrian J,Lacasa M,Lavialle C,Cassingena Rdoi
10.1002/ijc.2910440230subject
Has Abstractpub_date
1989-08-15 00:00:00pages
367-72issue
2eissn
0020-7136issn
1097-0215journal_volume
44pub_type
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journal_title:International journal of cancer
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journal_title:International journal of cancer
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journal_title:International journal of cancer
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journal_title:International journal of cancer
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journal_title:International journal of cancer
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更新日期:1995-12-20 00:00:00
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journal_title:International journal of cancer
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更新日期:2008-03-15 00:00:00
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journal_title:International journal of cancer
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更新日期:1996-01-26 00:00:00
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journal_title:International journal of cancer
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