# US 2020/0385702 A1 · Recombinant type i crispr-cas system

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- Number: US 2020/0385702 A1
- Document ID: US20200385702A1
- Status: Published application
- Kind: A1
- Application number: 15/930,678
- Filed: 2020-05-13
- Published: 2020-12-10
- Earliest claimed: 2018-10-01
- Assignees: North Carolina State University
- Applicants: North Carolina State University
- Inventors: Rodolphe Barrangou; Claudio Hidalgo-Cantabrana
- Web page: https://patentgrep.com/patent/US20200385702A1

## CPC

- C12N 15/102: {Mutagenizing nucleic acids}
- C40B 40/06: Libraries containing nucleotides or polynucleotides, or derivatives thereof
- C12N 1/04: Preserving or maintaining viable microorganisms (immobilised microorganisms C12N11/00)
- C12N 9/22: Ribonucleases {[RNase]; Deoxyribonucleases [DNase]}
- C12N 9/224: {Class 1 CAS enzyme complex, e.g. multi-enzyme}
- C12N 9/226: {Class 2 CAS enzyme complex, e.g. single CAS protein}
- C12N 15/03: Bacteria
- C12N 15/113: Non-coding nucleic acids modulating the expression of genes, e.g. antisense oligonucleotides; {Antisense DNA or RNA; Triplex- forming oligonucleotides; Catalytic nucleic acids, e.g. ribozymes; Nucleic acids used in co-suppression or gene silencing (when used in plants C12N15/8218)}
- C12N 15/746: {for lactic acid bacteria (Streptococcus; Lactococcus; Lactobacillus; Pediococcus; Enterococcus; Leuconostoc; Propionibacterium; Bifidobacterium; Sporolactobacillus)}
- C12N 15/90: Stable introduction of foreign DNA into chromosome
- C12N 2310/20: involving clustered regularly interspaced short palindromic repeats [CRISPR]
- C12N 2795/00061: Methods of inactivation or attenuation
- C12N: MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA (microbiological testing media C12Q1/00)
- C40B: COMBINATORIAL CHEMISTRY; LIBRARIES, e.g. CHEMICAL LIBRARIES (in silico combinatorial libraries of nucleic acids, proteins or peptides G16B35/00; in silico combinatorial chemistry G16C20/60)

## Abstract

This invention relates to recombinant Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR) arrays and recombinant nucleic acid constructs encoding Type I-E CASCADE complexes as well as plasmids, retroviruses and bacteriophage comprising the same.

## Claims

### Claim at position 1

-20. (canceled)

### Claim 21

A ribonucleoprotein comprising a
(a) Type I-E CRISPR associated complex for antiviral defense complex (Cascade complex) comprising one or more of a Cse1 polypeptide, a Cse2 polypeptide, a Cas7 polypeptide, a Cas5 polypeptide and/or a Cas6 polypeptide, and
(b) a Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR) array comprising two or more repeat sequences and one or more spacer sequence(s), wherein each of the one or more spacer sequences is linked at its 5′ end and at its 3′ end to a repeat sequence, and each of the one or more spacer sequences is complementary to one or more target sequences in a target DNA of a target organism, wherein the target DNA is located immediately adjacent (3′) to a protospacer adjacent motif (PAM), wherein the two or more repeat sequences comprise 20 to 28 consecutive nucleotides of a nucleotide sequences having at least 80% sequence identity to any one of the nucleotide sequences of SEQ ID NOs:1, 10, 19, 28, 37, 42, 51, or 60.

### Claim 22 (depends on 21)

The ribonucleoprotein of claim 21, wherein the Cse1 polypeptide is encoded by the nucleotide sequence of SEQ ID NO:82, the Cse2 polypeptide is encoded by the nucleotide sequence of SEQ ID NO:83, the Cas7 polypeptide is encoded by the nucleotide sequence of SEQ ID NO:84, the Cas5 polypeptide is encoded by the nucleotide sequence of SEQ ID NO:85, and the Cas6 polypeptide is encoded by the nucleotide sequence of SEQ ID NO:86.

### Claim 23 (depends on 21)

The ribonucleoprotein of claim 21, further comprising a Cas3 polypeptide.

### Claim 24 (depends on 23)

The ribonucleoprotein of claim 23, wherein the Cas3 polypeptide comprises the amino acid sequence of SEQ ID NO:119 or is encoded by the nucleotide sequence of SEQ ID NO:87.

### Claim 25 (depends on 21)

The ribonucleoprotein of claim 21, wherein the PAM comprises a nucleotide sequence of 5′-NAA-3′, 5′-AAA-3′ or 5′-AA-3′ that is immediately adjacent to and 5′ of the target sequence.

### Claim 26 (depends on 21)

The ribonucleoprotein of claim 21, wherein the spacer sequence is about 80 to 100% complementary to the target sequence.

### Claim 27 (depends on 21)

The ribonucleoprotein of claim 21, wherein the one or more spacer sequence(s) each have a length of about 25 nucleotides to about 40 nucleotides.

### Claim 28 (depends on 21)

The ribonucleoprotein of claim 21, wherein the one or more spacer sequence(s) each comprise a 5′ region and a 3′ region, wherein the 5′ region comprises a seed sequence and the 3′ region comprises a remaining portion of the one or more spacer sequence(s).

### Claim 29 (depends on 28)

The ribonucleoprotein of claim 28, wherein the seed sequence comprises the first 8 nucleotides of the 5′ end of each of the one or more spacer sequence(s), and is fully complementary to the target sequence, and the remaining portion of the one or more spacer sequence(s) is at least 80% complementary to the target sequence.

### Claim 30 (depends on 21)

The ribonucleoprotein of claim 21, wherein the target sequence is located in a gene, optionally in the sense or coding strand or in the antisense or non-coding strand.

### Claim 31 (depends on 30)

The ribonucleoprotein of claim 30, wherein the target sequence is located in an intragenic region of the gene, optionally located in the sense or coding strand or in the antisense or non-coding strand.

### Claim 32 (depends on 21)

The ribonucleoprotein of claim 21, wherein the target sequence is located in an intergenic region.

### Claim 33 (depends on 21)

The ribonucleoprotein of claim 21, wherein the target sequence is located on a chromosome, a mobile element, an extrachromosomal nucleic acid or a plasmid.

### Claim 34 (depends on 30)

The ribonucleoprotein of claim 30, wherein the gene encodes a transcription factor or a promoter.

### Claim 35 (depends on 30)

The ribonucleoprotein of claim 30, wherein the gene encodes non-coding RNA (e.g., miRNA, siRNA, piwi-interacting RNA (piRNA) and long non-coding RNA (IncRNA).

### Claim 36 (depends on 21)

The ribonucleoprotein of claim 21, wherein the target organism is a prokaryote or a eukaryote.

### Claim 37 (depends on 21)

A recombinant cell comprising the ribonucleoprotein of claim 21.

### Claim 38 (depends on 37)

The recombinant cell of claim 37, wherein the cell is a fungal cell, a plant cell, a mammalian cell, an insect cell, a bacterial cell, or an archaeon cell.

### Claim 39 (depends on 37)

The recombinant cell of claim 37, wherein the bacterial cell is a Lactobacillus spp. cell.

### Claim 40 (depends on 37)

The recombinant cell of claim 37, wherein the Lactobacillus spp. cell is a Lactobacillus crispatus cell.