Methods and compositions for rna-directed target dna modification and for rna-directed modulation of transcription
Abstract
The present disclosure provides a DNA-targeting RNA that comprises a targeting sequence and, together with a modifying polypeptide, provides for site-specific modification of a target DNA and/or a polypeptide associated with the target DNA. The present disclosure further provides site-specific modifying polypeptides. The present disclosure further provides methods of site-specific modification of a target DNA and/or a polypeptide associated with the target DNA The present disclosure provides methods of modulating transcription of a target nucleic acid in a target cell, generally involving contacting the target nucleic acid with an enzymatically inactive Cas9 polypeptide and a DNA-targeting RNA. Kits and compositions for carrying out the methods are also provided. The present disclosure provides genetically modified cells that produce Cas9; and Cas9 transgenic non-human multicellular organisms.
Claims
exact text as granted — not AI-modified1 - 2 . (canceled)
3 . A method of targeting and binding a target DNA, modifying a target DNA, modulating site-specific transcription from a target DNA, or modifying a histone that is bound to a target DNA, the method comprising:
contacting a target DNA with a complex that comprises: (a) a Cas9 protein; and (b) a DNA-targeting RNA comprising:
(i) a targeter-RNA comprising a nucleotide sequence that is complementary to a target sequence of the target DNA, and
(ii) an activator-RNA that hybridizes with the targeter-RNA to form a duplex that binds to the Cas9 protein,
wherein the targeter-RNA and/or the activator-RNA comprises one or more of: a non-natural internucleoside linkage, a nucleic acid mimetic, a modified sugar moiety, a modified backbone, and a modified nucleobase,
wherein: the complex binds to the target DNA, the target DNA is modified, the target DNA is cleaved, the target DNA is edited, transcription from the target DNA is modulated, and/or a histone that is bound to the target DNA is modified.
4 . A method of targeting and binding a target DNA, modifying a target DNA, modulating site-specific transcription from a target DNA, or modifying a histone that is bound to a target DNA, the method comprising:
contacting a target DNA with a complex that comprises: (a) a Cas9 protein; and (b) a DNA-targeting RNA comprising:
(i) a targeter-RNA comprising a nucleotide sequence that is complementary to a target sequence of the target DNA, and
(ii) an activator-RNA that hybridizes with the targeter-RNA to form a duplex that binds to the Cas9 protein,
wherein the targeter-RNA and/or the activator-RNA is conjugated to a heterologous moiety,
wherein: the complex binds to the target DNA, the target DNA is modified, the target DNA is cleaved, the target DNA is edited, transcription from the target DNA is modulated, and/or a histone that is bound to the target DNA is modified.
5 . A method of targeting and binding a target DNA, modifying a target DNA, modulating site-specific transcription from a target DNA, or modifying a histone that is bound to a target DNA, the method comprising:
contacting a target DNA with a complex that comprises: (a) a Cas9 protein; and (b) a DNA-targeting RNA comprising:
(i) a targeter-RNA comprising a nucleotide sequence that is complementary to a target sequence of the target DNA, and
(ii) an activator-RNA that hybridizes with the targeter-RNA to form a duplex that binds to the Cas9 protein,
wherein the Cas9 protein is fused to a heterologous polypeptide,
wherein: the complex binds to the target DNA, the target DNA is modified, the target DNA is cleaved, the target DNA is edited, transcription from the target DNA is modulated, and/or a histone that is bound to the target DNA is modified.
6 . A method of targeting and binding a target DNA, modifying a target DNA, modulating site-specific transcription from a target DNA, or modifying a histone that is bound to a target DNA, the method comprising:
contacting a target DNA with a complex that comprises: (a) a Cas9 protein; and (b) a DNA-targeting RNA comprising:
(i) a targeter-RNA comprising a nucleotide sequence that is complementary to a target sequence of the target DNA, and
(ii) an activator-RNA that hybridizes with the targeter-RNA to form a duplex that binds to the Cas9 protein,
wherein the Cas9 protein is covalently linked to a protein transduction domain,
wherein: the complex binds to the target DNA, the target DNA is modified, the target DNA is cleaved, the target DNA is edited, transcription from the target DNA is modulated, and/or a histone that is bound to the target DNA is modified.
7 . A method of targeting and binding a target DNA, modifying a target DNA, modulating site-specific transcription from a target DNA, or modifying a histone that is bound to a target DNA, the method comprising:
contacting a target DNA with a complex that comprises: (a) a Cas9 protein; and (b) a DNA-targeting RNA comprising:
(i) a targeter-RNA comprising a nucleotide sequence that is complementary to a target sequence of the target DNA, and
(ii) an activator-RNA that hybridizes with the targeter-RNA to form a duplex that binds to the Cas9 protein,
wherein the target DNA is chromosomal DNA,
wherein: the complex binds to the target DNA, the target DNA is modified, the target DNA is cleaved, the target DNA is edited, transcription from the target DNA is modulated, and/or a histone that is bound to the target DNA is modified.
8 . A method of targeting and binding a target DNA, modifying a target DNA, modulating site-specific transcription from a target DNA, or modifying a histone that is bound to a target DNA, the method comprising:
contacting a target DNA with a complex that comprises: (a) a Cas9 protein; and (b) a DNA-targeting RNA comprising:
(i) a targeter-RNA comprising a nucleotide sequence that is complementary to a target sequence of the target DNA, and
(ii) an activator-RNA that hybridizes with the targeter-RNA to form a duplex that binds to the Cas9 protein,
wherein said contacting comprises contacting a cell containing the target DNA, or introducing into the cell, a composition comprising:
(1) the Cas9 protein, or a nucleic acid encoding the Cas9 protein;
(2) the DNA-targeting RNA, or one or more nucleic acids encoding the DNA-targeting RNA; and
(3) one or more of: a nuclease inhibitor, a buffering agent, a detergent, a polyamine, an adjuvant, a wetting agent, a stabilizing agent, an antioxidant, and a complexing agent,
wherein: the complex binds to the target DNA, the target DNA is modified, the target DNA is cleaved, the target DNA is edited, transcription from the target DNA is modulated, and/or a histone that is bound to the target DNA is modified.
9 . A method of targeting and binding a target DNA, modifying a target DNA, modulating site-specific transcription from a target DNA, or modifying a histone that is bound to a target DNA, the method comprising:
contacting a target DNA with a complex that comprises: (a) a Cas9 protein; and (b) a DNA-targeting RNA comprising:
(i) a targeter-RNA comprising a nucleotide sequence that is complementary to a target sequence of the target DNA, and
(ii) an activator-RNA that hybridizes with the targeter-RNA to form a duplex that binds to the Cas9 protein,
wherein the method is characterized by one or more of:
(A) the targeter-RNA and/or the activator-RNA comprises one or more of: a non-natural internucleoside linkage, a nucleic acid mimetic, a modified sugar moiety, a modified backbone, and a modified nucleobase;
(B) the targeter-RNA and/or the activator-RNA is conjugated to a heterologous moiety;
(C) the Cas9 protein is fused to a heterologous polypeptide;
(D) the Cas9 protein is covalently linked to a protein transduction domain;
(E) the target DNA is chromosomal DNA; and
(F) the contacting comprises contacting a cell containing the target DNA, or introducing into the cell, a composition comprising:
(1) the Cas9 protein, or a nucleic acid encoding the Cas9 protein;
(2) the DNA-targeting RNA, or one or more nucleic acids encoding the DNA-targeting RNA; and
(3) one or more of: a nuclease inhibitor, a buffering agent, a detergent, a polyamine, an adjuvant, a wetting agent, a stabilizing agent, an antioxidant, and a complexing agent,
wherein: the complex binds to the target DNA, the target DNA is modified, the target DNA is cleaved, the target DNA is edited, transcription from the target DNA is modulated, and/or a histone that is bound to the target DNA is modified.
10 . The method of claim 9 , wherein said contacting results in modification of the target DNA.
11 . The method of claim 9 , wherein said contacting results in cleavage of the target DNA.
12 . The method of claim 11 , wherein the Cas9 protein comprises a mutation in a RuvC domain or an HNH domain and can cleave only one strand of DNA.
13 . The method of claim 9 , wherein the Cas9 protein comprises a mutation in a RuvC domain and/or an HNH domain.
14 . The method of claim 9 , wherein the Cas9 protein is fused to the heterologous polypeptide.
15 . The method of claim 14 , wherein the Cas9 protein comprises a mutation in a RuvC domain and an HNH domain and has substantially no nuclease activity.
16 . The method of claim 9 , wherein the Cas9 protein is covalently linked, at its N- or C-terminus, to the protein transduction domain.
17 . The method of claim 9 , wherein the nucleotide sequence that is complementary to the target sequence of the target DNA is 15 nucleotides (nt) to 18 nt long.
18 . The method of claim 9 , wherein the nucleotide sequence that is complementary to the target sequence of the target DNA is 18 nucleotides (nt) to 25 nt long.
19 . The method of claim 9 , wherein the DNA-targeting RNA is a double-molecule DNA-targeting RNA such that said targeter-RNA and said activator-RNA are present on different RNA molecules.
20 . The method of claim 9 , wherein the Cas9 protein is produced from a nucleic acid encoding the Cas9 protein; and the DNA-targeting RNA is produced from one or more nucleic acids encoding the DNA-targeting RNA.
21 . The method of claim 9 , comprising contacting the target DNA with two or more different DNA-targeting RNAs.
22 . The method of claim 9 , wherein the activator-RNA comprises the 75 nucleotide tracrRNA sequence AACAGCAUAGCAAGUUAAAAUAAGGCUAGUCCGUUAUCAACUUGAAAAAGUGGCACCGAGUCGG UGCUUUUUUU (SEQ ID NO: 478).
23 . The method of claim 9 , wherein the activator-RNA comprises the 26 nucleotide tracrRNA sequence UAGCAAGUUAAAAUAAGGCUAGUCCG (SEQ ID NO: 441).
24 . The method of claim 9 , wherein the targeter-RNA and/or the activator-RNA comprises one or more of: a non-natural internucleoside linkage, a nucleic acid mimetic, a modified sugar moiety, a modified backbone, and a modified nucleobase.
25 . The method of claim 9 , wherein the targeter-RNA and/or the activator-RNA comprises one or more of: (i) a non-natural internucleoside linkage, wherein the non-natural internucleoside linkage is a phosphorothioate, an inverted polarity linkage, or an abasic nucleoside linkage; (ii) a locked nucleic acid (LNA); (iii) a modified sugar moiety, wherein the modified sugar moiety is 2′-O-methoxyethyl, 2′-O-methyl, 2′-O-(2-methoxyethyl), 2′-fluoro, 2′-dimethylaminooxyethoxy, and 2′-dimethylaminoethoxyethoxy; (iv) a peptide nucleic acid (PNA); (v) a morpholino nucleic acid; and (vi) a cyclohexenyl nucleic acid (CeNA).
26 . The method of claim 9 , wherein the targeter-RNA and/or the activator-RNA is conjugated to the heterologous moiety, which is a polyamine; a polyamide; a polyethylene glycol; a polyether; a cholesterol moiety; a cholic acid; a thioether; a thiocholesterol; an aliphatic chain; a phospholipid; an adamantane acetic acid; a palmityl moiety; an octadecylamine or hexylamino-carbonyl-oxycholesterol moiety; a biotin; a phenazine; a folate; a phenanthridine; an anthraquinone; an acridine; a fluorescein; a rhodamine; a dye; or a coumarin.
27 . The method of claim 9 , wherein the target DNA is chromosomal DNA.
28 . The method of claim 9 , wherein said contacting comprises introducing into a cell containing the target DNA, one or more of:
the activator-RNA, or a nucleic acid encoding the activator-RNA; the targeter-RNA, or a nucleic acid encoding the targeter-RNA; and the Cas9 protein, or a nucleic acid encoding the Cas9 protein.
29 . The method of claim 28 , wherein at least one of: the nucleic acid encoding the activator-RNA, the nucleic acid encoding the targeter-RNA, and the nucleic acid encoding the Cas9 protein; is a plasmid, a cosmid, a minicircle, a phage, or a viral vector.
30 . The method of claim 28 , wherein the cell is a bacterial cell.
31 . The method of claim 28 , further comprising introducing into the cell a donor polynucleotide.
32 . The method of claim 9 , wherein the DNA-targeting RNA comprises a protein-binding segment that has a length of 15 nucleotides to 80 nucleotides.
33 . A method of targeting and binding a target DNA, modifying a target DNA, modulating site-specific transcription from a target DNA, or modifying a histone that is bound to a target DNA, the method comprising:
contacting a target DNA with a complex that comprises: (a) a Cas9 protein; and (b) a DNA-targeting RNA comprising:
(i) a targeter-RNA, which has one DNA-targeting segment that comprises a nucleotide sequence that is complementary to a target sequence of the target DNA, and
(ii) an activator-RNA that hybridizes with the targeter-RNA to form a duplex that binds to the Cas9 protein,
wherein the method is characterized by one or more of:
(A) the targeter-RNA and/or the activator-RNA comprises one or more of: a non-natural internucleoside linkage, a nucleic acid mimetic, a modified sugar moiety, a modified backbone, and a modified nucleobase;
(B) the targeter-RNA and/or the activator-RNA is conjugated to a heterologous moiety;
(C) the Cas9 protein is fused to a heterologous polypeptide;
(D) the Cas9 protein is covalently linked to a protein transduction domain;
(E) the target DNA is chromosomal DNA; and
(F) the contacting comprises contacting a cell containing the target DNA, or introducing into the cell, a composition comprising:
(1) the Cas9 protein, or a nucleic acid encoding the Cas9 protein;
(2) the DNA-targeting RNA, or one or more nucleic acids encoding the DNA-targeting RNA; and
(3) one or more of: a nuclease inhibitor, a buffering agent, a detergent, a polyamine, an adjuvant, a wetting agent, a stabilizing agent, an antioxidant, and a complexing agent,
wherein: the complex binds to the target DNA, the target DNA is modified, the target DNA is cleaved, the target DNA is edited, transcription from the target DNA is modulated, and/or a histone that is bound to the target DNA is modified.
34 . A composition comprising:
a DNA-targeting RNA, or one or more nucleic acids encoding the DNA-targeting RNA, wherein the DNA-targeting RNA comprises: (a) a targeter-RNA comprising a nucleotide sequence that is complementary to a target sequence of a target DNA molecule, and (b) an activator-RNA that hybridizes with the targeter-RNA to form a double-stranded RNA (dsRNA) duplex of a protein-binding segment, wherein the DNA-targeting RNA is capable of forming a complex with a Cas9 polypeptide and targeting the complex to the target sequence of the target DNA molecule, wherein the target DNA molecule is chromosomal DNA.
35 . A composition comprising:
a DNA-targeting RNA, or one or more nucleic acids encoding the DNA-targeting RNA, wherein the DNA-targeting RNA comprises: (a) a targeter-RNA comprising a nucleotide sequence that is complementary to a target sequence of a target DNA molecule, and (b) an activator-RNA that hybridizes with the targeter-RNA to form a double-stranded RNA (dsRNA) duplex of a protein-binding segment, wherein one or more of the targeter-RNA and the activator-RNA is conjugated to a heterologous moiety, or the one or more nucleic acids encoding the DNA-targeting RNA are conjugated to a heterologous moiety, and wherein the DNA-targeting RNA is capable of forming a complex with a Cas9 polypeptide and targeting the complex to the target sequence of the target DNA molecule.
36 . A composition comprising:
a DNA-targeting RNA that comprises: (a) a targeter-RNA comprising a nucleotide sequence that is complementary to a target sequence of a target DNA molecule, and (b) an activator-RNA that hybridizes with the targeter-RNA to form a double-stranded RNA (dsRNA) duplex of a protein-binding segment, wherein the targeter-RNA and/or the activator-RNA comprises one or more of: a non-natural internucleoside linkage, a nucleic acid mimetic, a modified sugar moiety, a modified backbone, and a modified nucleobase, and wherein the DNA-targeting RNA is capable of forming a complex with a Cas9 polypeptide and targeting the complex to the target sequence of the target DNA molecule.
37 . A composition comprising:
(1) a DNA-targeting RNA, or one or more nucleic acids encoding the DNA-targeting RNA, wherein the DNA-targeting RNA comprises:
(a) a targeter-RNA comprising a nucleotide sequence that is complementary to a target sequence of a target DNA molecule, and
(b) an activator-RNA that hybridizes with the targeter-RNA to form a double-stranded RNA (dsRNA) duplex of a protein-binding segment; and
(2) one or more of: a nuclease inhibitor, a buffering agent, a detergent, a polyamine, an adjuvant, a wetting agent, a stabilizing agent, an antioxidant, and a complexing agent,
wherein the DNA-targeting RNA is capable of forming a complex with a Cas9 polypeptide and targeting the complex to the target sequence of the target DNA molecule.
38 . A composition comprising:
one or more nucleic acids encoding a DNA-targeting RNA, wherein the DNA-targeting RNA comprises: (a) a targeter-RNA comprising a nucleotide sequence that is complementary to a target sequence of a target DNA molecule, and (b) an activator-RNA that hybridizes with the targeter-RNA to form a double-stranded RNA (dsRNA) duplex of a protein-binding segment, wherein the targeter-RNA or activator-RNA, or both, is encoded by a nucleotide sequence operably linked to a heterologous transcriptional control sequence and/or a heterologous translational control sequence, wherein the DNA-targeting RNA is capable of forming a complex with a Cas9 polypeptide and targeting the complex to the target sequence of the target DNA molecule.
39 . A composition comprising:
a DNA-targeting RNA, or one or more nucleic acids encoding the DNA-targeting RNA, wherein the DNA-targeting RNA comprises: (a) a targeter-RNA comprising a nucleotide sequence that is complementary to a target sequence of a target DNA molecule, and (b) an activator-RNA that hybridizes with the targeter-RNA to form a double-stranded RNA (dsRNA) duplex of a protein-binding segment, wherein the DNA-targeting RNA is capable of forming a complex with a Cas9 polypeptide and targeting the complex to the target sequence of the target DNA molecule, wherein the composition is lyophilized.
40 . A composition comprising:
a DNA-targeting RNA, or one or more nucleic acids encoding the DNA-targeting RNA, wherein the DNA-targeting RNA comprises: (a) a targeter-RNA comprising a nucleotide sequence that is complementary to a target sequence of a target DNA molecule, and (b) an activator-RNA that hybridizes with the targeter-RNA to form a double-stranded RNA (dsRNA) duplex of a protein-binding segment, wherein the DNA-targeting RNA is capable of forming a complex with a Cas9 polypeptide and targeting the complex to the target sequence of the target DNA molecule, and wherein the composition is characterized by one or more of:
(A) the target DNA molecule is chromosomal DNA;
(B) one or more of: the targeter-RNA, the activator-RNA, and the one or more nucleic acids encoding the DNA-targeting RNA, are conjugated to a heterologous moiety;
(C) the targeter-RNA and/or the activator-RNA comprises one or more of: a non-natural internucleoside linkage, a nucleic acid mimetic, a modified sugar moiety, a modified backbone, and a modified nucleobase;
(D) the composition comprises one or more of: a nuclease inhibitor, a buffering agent, a detergent, a polyamine, an adjuvant, a wetting agent, a stabilizing agent, an antioxidant, and a complexing agent;
(E) the targeter-RNA or activator-RNA, or both, encoded by the one or more nucleic acids, is encoded by a nucleotide sequence operably linked to a heterologous transcriptional control sequence and/or a heterologous translational control sequence; and
(F) the composition is lyophilized.
41 . The composition of claim 40 , further comprising a Cas9 protein, or a nucleic acid encoding the Cas9 protein.
42 . The composition of claim 41 , wherein the Cas9 protein comprises a mutation in a RuvC domain or an HNH domain and can cleave only one strand of DNA.
43 . The composition of claim 41 , wherein the Cas9 protein comprises a mutation in a RuvC domain and/or an HNH domain.
44 . The composition of claim 41 , wherein the Cas9 protein is fused to a heterologous polypeptide.
45 . The composition of claim 44 , wherein the Cas9 protein comprises a mutation in a RuvC domain and an HNH domain and has substantially no nuclease activity.
46 . The composition of claim 41 , wherein the Cas9 protein is covalently linked to a protein transduction domain.
47 . The composition of claim 40 , wherein the nucleotide sequence that is complementary to the target sequence of the target DNA molecule is 15 nucleotides (nt) to 18 nt long.
48 . The composition of claim 40 , wherein the nucleotide sequence that is complementary to the target sequence of the target DNA molecule is 18 nucleotides (nt) to 25 nt long.
49 . The composition of claim 40 , wherein the DNA-targeting RNA is a double-molecule DNA-targeting RNA such that said targeter-RNA and said activator-RNA are present on different RNA molecules.
50 . The composition of claim 40 , wherein the targeter-RNA and/or the activator-RNA comprises one or more of: a non-natural internucleoside linkage, a nucleic acid mimetic, a modified sugar moiety, a modified backbone, and a modified nucleobase.
51 . The composition of claim 40 , wherein the targeter-RNA and/or the activator-RNA comprises one or more of: (i) a non-natural internucleoside linkage, wherein the non-natural intemucleoside linkage is a phosphorothioate, an inverted polarity linkage, or an abasic nucleoside linkage; (ii) a locked nucleic acid (LNA); (iii) a modified sugar moiety, wherein the modified sugar moiety is 2′-O-methoxyethyl, 2′-O-methyl, 2′-O-(2-methoxyethyl), 2′-fluoro, 2′-dimethylaminooxyethoxy, and 2′-dimethylaminoethoxyethoxy; (iv) a peptide nucleic acid (PNA); (v) a morpholino nucleic acid; and (vi) a cyclohexenyl nucleic acid (CeNA).
52 . The composition of claim 40 , wherein the targeter-RNA and/or the activator-RNA is conjugated to a moiety selected from: a polyamine; a polyamide; a polyethylene glycol; a polyether; a cholesterol moiety; a cholic acid; a thioether; a thiocholesterol; an aliphatic chain; a phospholipid; an adamantane acetic acid; a palmityl moiety; an octadecylamine or hexylamino-carbonyl-oxycholesterol moiety; a biotin; a phenazine; a folate; a phenanthridine; an anthraquinone; an acridine; a fluorescein; a rhodamine; a dye; and a coumarin.
53 . The composition of claim 40 , wherein the DNA molecule is chromosomal DNA.
54 . The composition of claim 40 , wherein the DNA-targeting RNA comprises a protein-binding segment that has a length of 15 nucleotides to 80 nucleotides.
55 . A composition comprising:
a DNA-targeting RNA, or one or more nucleic acids encoding the DNA-targeting RNA, wherein the DNA-targeting RNA comprises: (a) a targeter-RNA, which has one DNA-targeting segment that comprises a nucleotide sequence that is complementary to a target sequence of a target DNA molecule, and (b) an activator-RNA that hybridizes with the targeter-RNA to form a double-stranded RNA (dsRNA) duplex of a protein-binding segment, wherein the DNA-targeting RNA is capable of forming a complex with a Cas9 polypeptide and targeting the complex to the target sequence of the target DNA molecule, and wherein the composition is characterized by one or more of:
(A) the target DNA molecule is chromosomal DNA;
(B) one or more of: the targeter-RNA, the activator-RNA, and the one or more nucleic acids encoding the DNA-targeting RNA, are conjugated to a heterologous moiety;
(C) the targeter-RNA and/or the activator-RNA comprises one or more of: a non-natural inteniucleoside linkage, a nucleic acid mimetic, a modified sugar moiety, a modified backbone, and a modified nucleobase;
(D) the composition comprises one or more of: a nuclease inhibitor, a buffering agent, a detergent, a polyamine, an adjuvant, a wetting agent, a stabilizing agent, an antioxidant, and a complexing agent;
(E) the targeter-RNA or activator-RNA, or both, encoded by the one or more nucleic acids, is encoded by a nucleotide sequence operably linked to a heterologous transcriptional control sequence and/or a heterologous translational control sequence; and
(F) the composition is lyophilized.
56 . A cell comprising the composition of claim 40 .
57 . The cell of claim 56 , wherein the cell is a bacterial cell.
58 . A cell comprising the composition of claim 41 .
59 . The cell of claim 58 wherein the cell is a bacterial cell.
60 . A cell comprising a first nucleic acid comprising a nucleotide sequence that (i) encodes an activator-RNA, and (ii) is operably linked to an expression control sequence that is heterologous to the activator-RNA; wherein the first nucleic acid does not comprise a sequence that encodes a targeter-RNA.
61 . The cell of claim 60 , further comprising a second nucleic acid comprising a nucleotide sequence that encodes a targeter-RNA.
62 . The cell of claim 61 , further comprising a Cas9 protein or a nucleic acid encoding the Cas9 protein.
63 . A cell comprising:
a first nucleic acid comprising a nucleotide sequence that (i) encodes an activator-RNA, and (ii) is operably linked to an expression control sequence that is heterologous to the activator-RNA; wherein the first nucleic acid does not comprise a sequence that encodes a targeter-RNA, and a second nucleic acid comprising a nucleotide sequence that encodes a targeter-RNA that has one DNA-targeting segment.
64 . A cell comprising a nucleic acid comprising a nucleotide sequence that (i) encodes an activator-RNA, and (ii) is operably linked to an expression control sequence that is heterologous to the activator-RNA, wherein the expression control sequence is not operably linked to a nucleotide sequence that encodes a targeter-RNA.
65 . The cell of claim 64 , further comprising a Cas9 protein or a nucleic acid encoding the Cas9 protein.
66 . The cell of claim 64 , wherein the nucleic acid further comprises a nucleotide sequence that encodes a targeter-RNA.
67 . A cell comprising a nucleic acid comprising a nucleotide sequence that (i) encodes an activator-RNA, and (ii) is operably linked to an expression control sequence that is heterologous to the activator-RNA, wherein the expression control sequence is not operably linked to a nucleotide sequence that encodes a targeter-RNA, wherein the nucleic acid further comprises a nucleotide sequence that encodes a targeter-RNA that has one DNA-targeting segment.
68 . A cell comprising a vector comprising a recombinant nucleic acid consisting of a nucleotide sequence encoding an activator-RNA, wherein the nucleotide sequence encoding an activator-RNA is operably linked to a heterologous expression control sequence.Join the waitlist — get patent alerts
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