Compositions and methods for immunostimulatory RNA oligonucleotides

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent discloses specific RNA oligonucleotide sequence motifs (typically 4-nucleotide '4mer' motifs) and related methods that confer immunostimulatory activity—specifically IL-12 induction—when introduced into cells, especially monocytes, via a poly-L-arginine carrier. It also provides strategies for designing single-stranded RNA oligonucleotides or antisense RNAs with high, low, or minimal immunostimulatory activity, enabling fine-tuned immune activation or gene silencing for therapeutic applications such as immunotherapy for infections, cancer, or immune disorders.

Use CasesContent extracted from patent full text and abstract with AI.

• Developing new immunotherapeutic drugs to stimulate the immune system against cancers or viral infections.
• Adjuvant design to improve vaccines by triggering strong Th1 immune responses through IL-12 induction.
• Creation of antisense RNA therapies that also activate (or avoid activating) the immune system as needed for specific disease targets.
• Treatments for autoimmune disorders using RNA oligonucleotides with minimal immunostimulation to avoid undesired cytokine induction.
• Diagnostic tools for studying immune cell functions or screening immunostimulatory potential of RNA sequences.

BenefitsContent extracted from patent full text and abstract with AI.

• Precise control over immunostimulatory activity via specific sequence design, allowing for tailored therapies.
• Potential to replace or improve upon CpG DNA-based immune stimulants, especially in human applications where certain DNA motifs are less effective.
• Combined gene silencing and immunostimulation in a single molecule, maximizing therapeutic effects against complex diseases like cancer or chronic infections.
• Reduced cytotoxicity in delivery (through poly-L-arginine rather than lipids), allowing for safer administration.
• Algorithms for sequence design enable rational, high-throughput drug discovery rather than empirical screening.

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Inventors & Applicants

Patent Abstract

The present invention provides 4-nucleotide (4mer) RNA motifs that confer immunostimulatory activity, in particular, IL-12-inducing activity to a single-stranded RNA oligonucleotide. The present invention also provides single-stranded RNA oligonucleotides, including antisense RNA, with high or low immunostimulatory activity. The present invention further provides the use of the RNA oligonucleotides of the invention for therapeutic purposes.