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    A radiation-controlled molecular switch for use in gene therapy of cancer.

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    Authors
    Scott, S D
    Marples, B
    Hendry, Jolyon H
    Lashford, Linda S
    Embleton, M J
    Hunter, Robin D
    Howell, Anthony
    Margison, Geoffrey P
    Affiliation
    Cancer Research Campaign Section of Genome Damage and Repair, Paterson Institute for Cancer Research, Christie Hospital (NHS) Trust, Manchester, UK.
    Issue Date
    2000-07
    
    Metadata
    Show full item record
    Abstract
    Ionising radiation induces the expression of a number of radiation-responsive genes and there is current interest in exploiting this to regulate the expression of exogenous therapeutic genes in gene therapy strategies for cancer. However, the radiation-responsive promoters used in these approaches are often associated with low and transient levels of therapeutic gene expression. We describe here a novel radiation-triggered molecular switching device based on promoter elements from the radiation-responsive Egr-1 gene and the cre-LoxP site-specific recombination system of the P1 bacteriophage. Using this system, a single, minimally toxic dose of radiation induced cre-mediated excision of a lox-P flanked stop cassette in a silenced expression vector and this resulted in amplified levels of CMV-promoter-driven expression of the exogenous tumour-sensitising gene, HSV-tk. This strategy could be used in combination with targeted delivery and tumour-specific promoters to elicit the tumour-targeted and prolonged expression of a variety of tumour-sensitising genes and provide an unprecedented level of control and tumour selectivity.
    Citation
    A radiation-controlled molecular switch for use in gene therapy of cancer. 2000, 7 (13):1121-5 Gene Ther.
    Journal
    Gene Therapy
    URI
    http://hdl.handle.net/10541/86680
    PubMed ID
    10918478
    Type
    Article
    Language
    en
    ISSN
    0969-7128
    Collections
    All Christie Publications
    All Paterson Institute for Cancer Research

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