Abstract:
:The two-step transcriptional activation (TSTA) mechanism in gene therapy amplifies cell type-specific promoter activity, allowing for increased levels of gene expression in target tissues. In this system, the specific promoter drives expression of a strong transcriptional activator that binds to DNA target sequences located upstream from a second promoter controlling the expression of the therapeutic gene. The majority of previous studies have exploited a fusion between the DNA binding domain of the yeast transcriptional activator Gal4 fused to the VP16 activation domain of herpes simplex virus 1 as the transcriptional activator. In this report, an alternative to this system is described based on a fusion protein containing the DNA binding domain of the bovine papillomavirus 1 transcriptional activator E2 fused to VP16 that induces target gene expression following binding to a minimal bovine papillomavirus 4 promoter containing upstream E2 binding sites and only 3 bp of promoter sequence upstream from the TATA box. VP16-E2 is superior to Gal4-VP16 as the transcriptional activator in a TSTA system driven by either of the two potentially cancer-specific promoters telomerase RNA and telomerase reverse transcriptase in several cell lines. Results also suggest that this new system has an advantage in epithelial cells and is therefore ideal for potential targeting of carcinomas. By incorporating the TRAIL gene as a transgene in the VP16-E2 TSTA system, selective killing of telomerase-positive cells occurs. We propose that our new system should be considered in future TSTA, particularly when targeting epithelial-derived cells.
journal_name
Mol Cancer Therjournal_title
Molecular cancer therapeuticsauthors
Arendt ML,Nasir L,Morgan IMdoi
10.1158/1535-7163.MCT-09-0543subject
Has Abstractpub_date
2009-12-01 00:00:00pages
3244-54issue
12eissn
1535-7163issn
1538-8514pii
1535-7163.MCT-09-0543journal_volume
8pub_type
杂志文章abstract::Dietary phytochemicals exhibit chemopreventive potential in vivo through persistent low-dose exposures, whereas mechanistic in vitro studies with these agents generally use a high-dose single treatment. Because the latter approach is not representative of an in vivo steady state, we investigated antitumor activity of ...
journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-07-0117
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abstract::Aptamers, also termed as decoys or "chemical antibodies," represent an emerging class of therapeutics. They are short DNA or RNA oligonucleotides or peptides that assume a specific and stable three-dimensional shape in vivo, thereby providing specific tight binding to protein targets. In some cases and as opposed to a...
journal_title:Molecular cancer therapeutics
pub_type: 杂志文章,评审
doi:10.1158/1535-7163.MCT-06-0172
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-11-1027
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-11-0534
更新日期:2011-12-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:
更新日期:2004-02-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-20-0464
更新日期:2021-01-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-09-0119
更新日期:2009-08-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-16-0005
更新日期:2016-06-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-09-0115
更新日期:2009-08-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-11-0191
更新日期:2011-09-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章,评审
doi:10.1158/1535-7163.MCT-18-1161
更新日期:2020-08-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type:
doi:10.1158/1535-7163.MCT-09-0491
更新日期:2010-01-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-19-0387
更新日期:2020-01-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-18-0179
更新日期:2019-03-01 00:00:00
abstract::The serine protease granzyme B (GrB; 25 kDa) is capable of inducing apoptosis through both caspase-dependent and caspase-independent mechanisms. We designed a novel vascular-targeting fusion construct designated as GrB/vascular endothelial growth factor (VEGF)121, which is composed of a non-heparin-binding isoform of ...
journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:
更新日期:2003-10-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:
更新日期:2002-08-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:
更新日期:2003-12-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:
更新日期:2002-03-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:
更新日期:2003-08-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-09-1036
更新日期:2010-05-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-05-0393
更新日期:2006-04-01 00:00:00
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pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-17-0325
更新日期:2018-01-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-06-0367
更新日期:2007-01-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-10-0991
更新日期:2011-08-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-17-0760
更新日期:2018-01-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-08-0063
更新日期:2008-08-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-10-0809
更新日期:2011-05-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-18-1215
更新日期:2019-12-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:
更新日期:2005-01-01 00:00:00
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journal_title:Molecular cancer therapeutics
pub_type: 杂志文章
doi:10.1158/1535-7163.MCT-06-0760
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