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USPTO Publishes One Patent, Two Patent Applications Related to RNAi: Oct 4, 2007

Title: Oligonucleotide Synthesis with Alternative Solvents
Number: 7,276,599
Filed: June 2, 2004
Lead Inventor: Max Moore, Isis Pharmaceuticals
The invention, according to the patent’s abstract, claims “methods of manufacturing an oligonucleotide comprising a pentavalent phosphate triester. In particular, the method comprises providing a 5' blocked-nucleoside, de-blocking the 5' blocked-nucleoside to form a 5' OH-nucleoside, coupling the 5' OH-nucleoside with a phosphoramidite to form an oligonucleotide comprising a trivalent phosphite triester; and oxidizing the oligonucleotide comprising a trivalent phosphite triester to the oligonucleotide comprising a pentavalent phosphate triester. In some embodiments, the wash between any of the steps above is with at least one solvent wash comprising a toluene.”

Title: Methods for Inhibiting Angiogenesis and/or Lymphangiogenesis
Number: 20070224194
Filed: Dec. 1, 2006
Lead Inventor: Bradley McColl, Ludwig Institute for Cancer Research
“Proprotein convertase inhibitor has been found to block proteolytic processing and activation of VEGF-C and VEGF-D and inhibit angiogenesis and/or lymphangiogenesis,” the patent application’s abstract states. “Method and composition are disclosed for inhibiting angiogenesis and/or lymphangiogenesis, and for treating conditions associated with excessive angiogenesis, such as tumors and/or retinopathies, as well as conditions associated with lymphangiogenesis, such as the metastatic spread of malignancies, macular degeneration, inflammatory mediated diseases, rheumatoid arthritis, diabetic retinopathy and psoriasis in a patient.
“The inventive method and composition utilize proprotein convertase antagonist selected from the group consisting of an anti-proprotein convertase antibody, an antisense nucleic acid molecule against a polynucleotide coding for a proprotein convertase, and an siRNA for inhibiting proprotein convertase expression, as well as proprotein convertase inhibitors,” the abstract adds.

Title: siRNA Targeting Gremlin
Number: 20070225486
Filed: March 30, 2007
Lead Inventor: Anastasia Khvorova, Dharmacon (Thermo Fisher Scientific)
“Efficient sequence specific gene silencing is possible through the use of siRNA technology,” the patent application’s abstract states. “By selecting particular siRNAs by rational design, one can maximize the generation of an effective gene silencing reagent, as well as methods for silencing genes. Methods, compositions, and kits generated through rational design of siRNAs are disclosed including those directed to CKSF1B1.”

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