Abstract:
:Infection of domestic rabbits with cottontail rabbit papillomavirus (CRPV) causes local papillomas which progress to carcinomas in more than 80% of cases. This animal model system therefore allows the identification of molecular mechanisms required for the induction and progression of epithelial tumors. The viral E2 protein stimulates both viral DNA replication and transcription, and these functions can be genetically separated. We introduced the respective mutations into CRPV E2 and found, in line with published data for other papillomavirus E2 proteins, that mutation of the highly conserved amino acid 37 or 73 resulted in replication-competent but transactivation-deficient E2 proteins, whereas E2 proteins with mutations at residue 39 were replication deficient and transactivation competent. The R37A, I73L, and I73A E2 mutants, showing a loss of transactivation function, and the R37K E2 mutant, which is still transactivation competent, were introduced into the whole genome of CRPV, which was then injected into the skin of rabbits. Strikingly, the ability to induce tumors within 6 weeks was abolished by each of the E2 mutations, in contrast to the tumor induction rate (93%) obtained with wild-type CRPV DNA. Two small papillomas induced by mutant E2 I73A CRPV DNA appeared as late as 12 or 24 weeks postinjection, were significantly smaller, and showed no further extension of growth. These data suggest that functionally conserved amino acids in the transactivation domain of E2 are also required for the induction and growth of epithelial tumors in rabbits infected with CRPV.
journal_name
J Viroljournal_title
Journal of virologyauthors
Jeckel S,Huber E,Stubenrauch F,Iftner Tdoi
10.1128/jvi.76.22.11209-11215.2002subject
Has Abstractpub_date
2002-11-01 00:00:00pages
11209-15issue
22eissn
0022-538Xissn
1098-5514journal_volume
76pub_type
杂志文章abstract::Feline calicivirus is a major causative agent of respiratory disease in cats. It is also one of the few cultivatable members of Caliciviridae. We have examined the entry process of feline calicivirus (FCV). An earlier study demonstrated that acidification in endosomes may be required. We have confirmed this observatio...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02452-05
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abstract::Chronic hepatitis C virus (HCV) infection is associated with impaired proliferative, cytokine, and cytotoxic effector functions of HCV-specific CD8(+) T cells that probably contribute significantly to viral persistence. Here, we investigated the potential role of T cells with a CD4(+)CD25(+) regulatory phenotype in su...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.79.12.7860-7867.2005
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journal_title:Journal of virology
pub_type: 杂志文章
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.65.1.89-97.1991
更新日期:1991-01-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.4.1.7-11.1969
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journal_title:Journal of virology
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02498-08
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.79.6.3664-3674.2005
更新日期:2005-03-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00018-12
更新日期:2012-05-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.35.2.390-399.1980
更新日期:1980-08-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.05859-11
更新日期:2011-11-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.65.5.2757-2760.1991
更新日期:1991-05-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.79.11.6723-6731.2005
更新日期:2005-06-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
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更新日期:2016-01-20 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.68.3.1468-1474.1994
更新日期:1994-03-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.67.7.4122-4132.1993
更新日期:1993-07-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00139-16
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journal_title:Journal of virology
pub_type: 杂志文章
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.77.2.1049-1058.2003
更新日期:2003-01-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
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更新日期:2003-05-01 00:00:00
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pub_type: 杂志文章
doi:10.1128/JVI.66.7.4364-4376.1992
更新日期:1992-07-01 00:00:00
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journal_title:Journal of virology
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更新日期:2008-07-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
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更新日期:2011-10-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.62.12.4439-4444.1988
更新日期:1988-12-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.79.14.8764-8772.2005
更新日期:2005-07-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.5.2.230-236.1970
更新日期:1970-02-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.64.7.3500-3508.1990
更新日期:1990-07-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.68.7.4196-4203.1994
更新日期:1994-07-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00771-10
更新日期:2010-09-01 00:00:00