Expression of apoA-1 and variants thereof using spliceosome mediated RNA trans-splicing
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United States of America Patent
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Issued Date -
Aug 10, 2006
app pub date -
Jan 21, 2005
filing date -
Jan 23, 2004
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Abandoned
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Abstract
The present invention provides methods and compositions for generating novel nucleic acid molecules through targeted spliceosome mediated RNA trans-splicing that result in expression of an apoA-1 variant, the preferred embodiment referred to herein as the apoA-1 Milano variant. The compositions of the invention include pre-trans-splicing molecules (PTMs) designed to interact with a target precursor messenger RNA molecule (target pre-mRNA) and mediate a trans-splicing reaction resulting in the generation of a novel chimeric RNA molecule (chimeric RNA) capable of encoding the apoA-1 Milano variant. The expression of this variant protein results in protection against vascular disorders resulting from plaque build up, i.e., strokes and heart attacks. In particular, the PTMs of the present invention include those genetically engineered to interact with the apoA-1 target pre-mRNA so as to result in expression of the apoA-1 Milano variant. In addition, the PTMs of the invention include those genetically engineered to interact with the apoB or albumin or other specific target pre-mRNAs so as to result in expression of an apoB/apoA-1 and/or alb/apoA-1 wild type or Milano fusion protein thereby reducing apoB expression and simultaneously produce ApoA-1 function.
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