IMMUNOSTIMULATORY DNA:RNA OLIGONUCLEOTIDES
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United States of America Patent
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Issued Date -
Dec 8, 2011
app pub date -
Mar 22, 2011
filing date -
Feb 19, 2004
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Abandoned
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Abstract
Immunostimulatory sequence-specific RNA oligonucleotides corresponding to 3′ terminal sequences of single-stranded minus-sense RNA genomic RNAs are provided. Also provided are compositions and methods relating to an immunostimulatory 4-mer RNA motif provided as 5′-C/U-U-G/U-U-3′. Incorporation of this short RNA motif is sufficient to confer new and altered immunostimulatory properties in new and existing oligonucleotides, including CpG oligodeoxynucleotides. Also provided are methods for use of the immunostimulatory RNA oligonucleotides and DNA:RNA chimeric oligonucleotides of the invention to induce an immune response in vitro and in vivo, as well as to treat allergy, asthma, infection, and cancer in a subject. Single-stranded oligoribonucleotides of the invention are believed to signal through a Toll-like receptor (TLR) chosen from TLR9, TLR8, TLR7, and TLR3. The oligoribonucleotides can also be used in a method to screen for TLR antagonists.
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