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Regulus Therapeutics and Collaborators from NYU Langone Medical Center Publish New Data Demonstrating Clearance of Cholesterol from Bloodstream and Reduction of Atherosclerotic Plaques through Inhibition of microRNA-33
Date:6/6/2011

ied anti-miR-33 compounds and methods of use for the treatment of metabolic diseases with anti-miR-33.  

About miR-33

Cholesterol metabolism is tightly regulated at the cellular level, and recent discoveries have shown that miR-33 modulates genes involved in cellular cholesterol transport. Mice have a single copy of miR-33 but non-human primates and humans have two copies of miR-33 (miR-33a and miR-33b), and technologies developed at Regulus have been used to demonstrate ways to inhibit both. miR-33a and miR-33b are found in the introns of the SREBP-2 and SREBP-1 genes, transcriptional regulators of cholesterol and fatty acid synthesis. Inhibition of miR-33a and miR-33b increases cholesterol efflux in the liver and peripheral macrophages through upregulation of the target gene ABCA1. As a result, HDL cholesterol levels increase and reverse cholesterol transport is enhanced, making miR-33 a promising target for treatment of atherosclerosis. Additional targets of miR-33a and miR-33b in the fatty acid oxidation and insulin signaling pathways have also suggested that miR-33a and miR-33b inhibition will be beneficial for multiple aspects of metabolic syndrome.

About microRNAs

The discovery of microRNA in humans during the last decade is one of the most exciting scientific breakthroughs in recent history. microRNAs are small RNA molecules, typically 20 to 25 nucleotides in length, that do not encode proteins but instead regulate gene expression. More than 700 microRNAs have been identified in the human genome, and over one-third of all human genes are believed to be regulated by microRNAs. A single microRNA can regulate entire networks of genes. As such, these molecules are considered master regulators of the human genome. microRNAs have been shown to play an integral role in numerous biological processes, including the immune response, cell-cycle
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SOURCE Regulus Therapeutics Inc.
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