NOVEL CRISPR ENZYMES, METHODS, SYSTEMS AND USES THEREOF
The present invention provides novel systems, methods and compositions for making and using a recombinantly engineered novel Cas9 optimized for human cells, for nucleic acid targeting and manipulation. The present invention is based on the discovery of a novel Cas9 species from Lachnospira bacterium that was codon-optimized and recombinantly produced for use in human ceils. In some embodiments, the novel Cas9 can be used in a base editor. In some embodiments, the novel engineered Cas9 is used to treat human diseases.
1 . An engineered, non-naturally occurring Cas9 protein modified from Lachnospira Cas9, having at least 80% identity to
(SEQ ID NO: 1)
MSVNVGLDIGIASVGVAVVDSESGEILEAVSDLFESAEANQNVDRRGFRQSRRLKRRQY
NRIHDFMKLWEEFGFVKPENINLNTVGLRVKSLTEQVTLDELYVILLSELKHRGISYLED
SEEVDGGSEYKEGLRINQRELQSKYPCEIQLERLKIYGRYRGNFTVEIDGEKVGLSNVFT
TGAYRKEIQQLLSIQKTYQSKLTDDFINKYLEIFDRKRQYYVGPGNEKSRTDYGRYTTK
KDAEGNYITDENIFEKLIGKCSIYPEEMRAAGASYTAQEFNLLNDLNNLTIGGRKIEEEEK
RAIIETIKSSKVVNVEKIICKVTGEDAETITGARIDKDDKRIYHSFECYRKLKKALETIEVK
IEEYSREELDELARILTLNTEREGILGELEKSFLDLGEEVIDCVIDFRRKNGPLFSKWQSFS
LRLMNDIIPDMYEQPKEQMTLLTEMGLMKSKKEIFKGMKYIPENVMRDDIYNPVVVRS
VRIAVRALNAVIKKYGEIDKVVIEMPRDRNTEEQKKRIDAENKRNREELPGIEKRILEEY
GIKITSAHYRNHKQLGLKLKLWNEQGGICPYSGKTIDLERLLQNAGDYEVDHIIPLSISLD
DSRNNKVLVYASENQKKGNQTPYAYLSSVQREWGWEQYRHYVLSDLKKKKISSKKIE
NYLFMKDISKIDVVKGFIQRNLNDTRYASKVVLNTLESFFKANEKETKVSVIRGSFTSLM
RKNLKLDKSREESYAHHAVDALLIAYSKMGYDSYHKLQGEFIDFETGEILDSRMWETNL
EPDILKGYLYGRKWSEIRENIKIAESRVKYWHMTNKKCNRSLCNQTLYGTRTYDGKIYQ
IKKIKDIRTPEGLKTFKDLVDKNKGDHLLMARNDPKTYEQILQIYRDYSDAKNPFLQYE
METGDCIRKYSKKHNGSRIVSLKYHDGEVNSCIDVSHKYGFEKGSQKVVLMSLNPYRM
DVYKNCNDGKYYLIGLKQSDIKCEGRHYVIDEEKYAKVLVNEKMIQPGQSRKDLPDLG
YEFVMSFYKNEIIQYEKDGKFYKERFLSRTKPASRNYIETKPVDKPNFEKRHQIGLAKTT
FIRKIRTDILGNEYNCDREKFSSIC.
2 .- 5 . (canceled)
6 . The Cas9 protein of claim 1 , wherein (i) the Cas9 protein has nickase activity, (ii) the Cas9 protein comprises at least one amino acid mutation in PAM Interacting, HNH and/or RuvC domain, (iii) the Cas9 protein further comprises a nuclear localization sequence (NLS) and/or a FLAG, HIS or HA tag, and/or (iv) the Cas9 protein recognizes a PAM sequence comprising 5′-NNGNG-3′.
7 . (canceled)
8 . The Cas9 protein of claim 1 , wherein the amino acid sequence comprises at least one mutation in an amino acid residue, wherein (i) the mutation is D8A H593A, and/or N616A, and/or (ii) the mutation results in an inactive Cas9.
9 .- 11 . (canceled)
12 . An engineered, non-naturally occurring Cas9 fusion protein comprising a Cas9 protein having at least 80% identity to SEQ ID NO: 1, and wherein the Cas9 protein is fused to a histone demethylase, a transcriptional activator, or to a deaminase, wherein the deaminase is a cytosine deaminase or an adenosine deaminase.
13 .- 14 . (canceled)
15 . A nucleic acid encoding the Cas9 protein of claim 1 .
16 .- 19 . (canceled)
20 . A method of cleaving a target nucleic acid in a eukaryotic cell comprising:
contacting the cell with a Cas9 of claim 1 , and an RNA guide or a nucleic acid encoding the RNA guide, wherein the RNA guide comprises a direct repeat sequence and a spacer sequence capable of hybridizing to the target nucleic acid, and
wherein the Cas9 protein is capable of binding to the RNA guide and of causing a break in the target nucleic acid sequence complementary to the RNA guide, wherein the break is a single-stranded break or a double-stranded break.
21 .- 22 . (canceled)
23 . A method of modifying a target nucleic acid in a eukaryotic cell comprising:
contacting the cell with a Cas9 of claim 1 , and an RNA guide or a nucleic acid encoding the RNA guide, wherein the RNA guide comprises a direct repeat sequence and a spacer sequence capable of hybridizing to the target nucleic acid, and wherein the Cas9 protein is capable of binding to the RNA guide and editing the target nucleic acid sequence complementary to the RNA guide.
24 . The method of claim 23 , wherein the Cas9 protein is an inactive Cas9 (dCas9).
25 . The method of claim 24 , wherein the dCas9 is fused to a deaminase.
26 . The method of claim 20 or 23 , wherein the RNA guide comprises a crRNA and a tracrRNA.
27 . The method of claim 26 , wherein the crRNA comprises a guide sequence and a direct repeat (DR) sequence of between about 16 and 26 nucleotides long.
28 .- 30 . (canceled)
31 . The method of claim 26 , wherein the crRNA comprises a DR sequence comprising a sequence having at least about 80% identity to AUUUUAGUUCCUGGAUAAUUCAAGUUAGUGUAAAAC (SEQ ID NO: 3), or at least about 80% identity to AUUUUAGUUCCUGGAUAAUUCA (SEQ ID NO: 4); or comprises a sequence of
(SEQ ID NO: 5)
NNNNNNNNNNNNNNNNNNNNAUUUUAGUUCCUGGAUAAUUCA.
32 .- 36 . (canceled)
37 . The method of claim 26 , wherein the tracrRNA comprises a sequence having at least about 80% identity to
(SEQ ID NO: 6)
UGAAUUAUUCAGACCAACUAAAACAAGGCUUUAUGCCGAAAUCAAGGACAC
CUUCGGGUGUCCUUUU1:JU.
38 .- 39 . (canceled)
40 . The method of claim 20 or 23 , wherein the RNA guide comprises a sgRNA, wherein the sgRNA comprises a scaffold comprising a sequence having at least about 80% identity to
(SEQ ID NO: 7)
AUUUUAGUUCCUGGAUAUAAUUAUUCAGACCAACUAAAACAAGGCUUUAUG
CCGAAAUCAAGGACACCUUCGGGUGUCCUUUUUUCUUUUU;
or
(SEQ ID NO: 13)
AUUUUAGUUCCUGGAUAAUUGAAAUGAAUUAUUCAGACCAACUAAAACAAG
GCUUUAUGCCGAAAUCAAGGACACCUUCGGGUGUCCUUUUUU;
or
(SEQ ID NO: 14)
AUUUUAGUUCCUGGAUAAUUCAAAUUAUUCAGACCAACUAAAACAAGGCUU
UAUGCCGAAAUCAAGGACACCUUCGGGUGUCCUUUUUUCUUUUUAAGGAGG
AAUAG;
or
(SEQ ID NO: 15)
AUUUUAGUUCCUGGAUAAUUCAAAUUAUUCAGACCAACUAAAACAAGGCUU
UAUGCCGAAAUCAAGGACACCUUCGGGUGUCCUUUGUUCUUUAUAAGGAGC
AAUAG;
or
(SEQ ID NO: 16)
AUUUUAGUUCCUGGUAAUUCAGACCAACUAAAACAAGGCUUUAUGCCGAAA
UCAAGGACACCUUCGGGUGUCCUUUUUUCUUUUU;
or
(SEQ ID NO: 17)
AUUUUAGUUCCUGGUAAUUCAGACCAACUAAAACAAGGCUUUAUGCCGAAA
UCAAGGACACCUUCGGGUGUCCUUCUUUCUUUUU;
or
(SEQ ID NO: 18)
AUUUUAGUUCCUGGAUAAUUGAAAAAUUAUUCAGACCAACUAAAACAAGGC
UUUAUGCCGAAAUCAAGGACACCUUCGGGUGUCCUUUUUU;
or
(SEQ ID NO: 19)
AUUUUAGUUCCUGGAUAAUGAAAAUUAUUCAGACCAACUAAAACAAGGCUU
UAUGCCGAAAUCAAGGACACCUUCGGGUGUCCUUUUUU;
or
(SEQ ID NO: 20)
AUUUUAGUUCCUGGAUAAGAAAUUAUUCAGACCAACUAAAACAAGGCUUUA
UGCCGAAAUCAAGGACACCUUCGGGUGUCCUUUUUU;
or
(SEQ ID NO: 21)
AUUUUAGUUCCUGGAUAGAAAUAUUCAGACCAACUAAAACAAGGCUUUAUG
CCGAAAUCAAGGACACCUUCGGGUGUCCUUUUUU;
or
(SEQ ID NO: 22)
AUUUUAGUUCCUGGAUGAAAAUUCAGACCAACUAAAACAAGGCUUUAUGCC
GAAAUCAAGGACACCUUCGGGUGUCCUUUUUU;
or
(SEQ ID NO: 23)
AUUUUAGUUCCUGGAGAAAUUCAGACCAACUAAAACAAGGCUUUAUGCCGA
AAUCAAGGACACCUUCGGGUGUCCUUUUUU.
41 .- 44 . (canceled)
45 . The method of claim 20 or 23 , wherein the target nucleic acid is 5′ to a protospacer adjacent motif (PAM) sequence, wherein the PAM has a sequence of 5′-NNGNG-3′.
46 .- 49 . (canceled)
50 . An engineered, non-naturally occurring CRISPR-Cas system comprising:
an RNA guide or a nucleic acid encoding the RNA guide, wherein the RNA guide comprises a direct repeat sequence and a spacer sequence capable of hybridizing to a target nucleic acid; and
a codon-optimized CRISPR-associated (Cas) protein having at least 80% sequence identity to SEQ ID NO: 1, and wherein the Cas protein is capable of binding to the RNA guide and (i) causing a break in the target nucleic acid sequence complementary to the RNA guide, and/or (ii) editing the target nucleic acid sequence complementary to the RNA guide, wherein the other Cas protein is fused to a deaminase.
51 .- 68 . (canceled)
69 . A vector comprising the system of claim 50 , wherein the vector is a plasmid or viral vector, wherein the viral vector is an AAV vector.
70 .- 73 . (canceled)
74 . A method of treating a disorder or a disease in a subject in need thereof, the method comprising administering to the subject a system of claim 50 ,
wherein the guide RNA is complementary to at least 10 nucleotides of a target nucleic acid associated with the condition or disease;
wherein the Cas protein associates with the guide RNA; wherein the guide RNA binds to the target nucleic acid;
wherein (i) the Cas protein causes a break in the target nucleic acid, or (ii) the Cas9 is an inactive Cas9 (dCas9) fused to a deaminase and results in one or more base edits in the target nucleic acid, thereby treating the disorder or disease.
75 .- 76 . (canceled)
77 . A base editor comprising the fusion protein of Cas9 of claim 12 , wherein (ii) the base editor comprises an adenosine deaminase domain, and wherein the one or more guide RNAs target the base editor to effect an A⋅T to G⋅C alteration in the polynucleotide or (ii) the base editor comprises a cytidine deaminase domain, and wherein the one or more guide RNAs target the base editor to effect an C⋅G to T⋅A alteration in the polynucleotide.
78 . (canceled)
79 . A method of editing a nucleobase of a polynucleotide, the method comprising contacting the polynucleotide with the base editor of claim 77 in complex with one or more guide RNAs, wherein the editing results in less than 50% indel formation in a target polynucleotide sequence.
80 .- 82 . (canceled)