Trans-splicing mediated imaging of gene expression
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United States of America Patent
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Issued Date -
Mar 25, 2004
app pub date -
Feb 25, 2003
filing date -
Feb 25, 2002
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Abandoned
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Abstract
The present invention provides methods and compositions for imaging of gene expression in cells. The compositions of the invention include pre-trans-splicing molecules (PTMs) designed to interact with a target precursor messenger RNA molecule (target pre-mRNA) expressed within a cell and mediate a trans-splicing reaction resulting in the generation of a novel chimeric RNA molecule (chimeric RNA) capable of encoding a reporter molecule. The PTMs of the invention are designed to interact with target pre-mRNAs thereby providing a method for detection of target pre-mRNA expression. The methods and compositions of the invention may be utilized to monitor the expression of specific genes within a cell. In instances where specific gene expression is associated with a disease, the present invention provides diagnostic methods and compositions. Such diseases include infectious diseases, proliferative disorders such as cancer, genetic, neurological and metabolic disorders, to name a few. Additionally, the present invention may be used in screening assays to identify compounds capable of modulating gene expression or in assays designed to identify protein/protein interactions. The invention is demonstrated by way of example in which papilloma virus gene expression within a cell was detected using a bioluminescence assay system.
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