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US 12,644,138 B2Granted
Dual guide CRISPR hybrid DNA/RNA polynucleotides and methods of use
AssigneeCaribou Biosciences, Inc.
InventorsAndrew Paul May, Paul Daniel Donohoue
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Abstract
The present disclosure provides DNA-guided CRISPR systems; polynucleotides comprising DNA, RNA and mixtures thereof for use with CRISPR systems; and methods of use involving such polynucleotides and DNA-guided CRISPR systems.
Claims11
A set of two Class 2 Type II CRISPR polynucleotides forming a dual guide Class 2 Type II polynucleotide, comprising:
- (i) a first Class 2 Type II CRISPR polynucleotide comprising a targeting region comprising ribonucleic acid (RNA) and an activating region adjacent to said targeting region;
- and,
- (ii) a second Class 2 Type II CRISPR polynucleotide comprising an activating region comprising a sequence that is complementary to a sequence in the activating region of the first Class 2 Type II CRISPR polynucleotide,
- wherein the activating region of the first Class 2 Type II CRISPR polynucleotide and the activating region of the second Class 2 Type II CRISPR polynucleotide form a dual guide activating region comprising a mixture of RNA and deoxyribonucleic acid (DNA), wherein the two activating regions are hybridized to each other to form an activating duplex region,
- wherein the activating duplex region comprises a bulge, and the second Class 2 Type II CRISPR polynucleotide further comprises a nexus 3′ to the activating region, and at least one hairpin 3′ to the nexus, and
- wherein the activating duplex region is capable of binding with a Cas9 protein.
3 more elements
Dependencies are inferred from the claim text.