Simultaneous multiplex genome editing in yeast

Patent metadata

Field	Value
Publication number	US-11306299-B2
Application number	US-202117518556-A
Country	US
Kind code	B2
Filing date	Nov 3, 2021
Priority date	Mar 25, 2019
Publication date	Apr 19, 2022
Grant date	Apr 19, 2022

Abstract

The present disclosure provides compositions of matter, methods and instruments for editing nucleic acids in live yeast cells.

First claim

We claim:

1. A library of linear vector backbones and a library of editing cassettes to be transformed into yeast cells comprising:
a first linear vector backbone comprising a coding sequence for a nuclease, a coding sequence for a first antibiotic resistance gene, and a yeast origin of replication;
a second linear vector backbone comprising a coding sequence for a nuclease, a coding sequence for a second antibiotic resistance gene, and a yeast origin of replication; and
a library of editing cassette constructs, wherein each editing cassette construct comprises from 5′ to 3′: a pol II promoter; a transcription start site; a first editing cassette wherein the first editing cassette comprises a coding sequence for a first gRNA and a coding sequence for a first donor DNA, wherein the first donor DNA comprises a rational, desired edit to a first target sequence and an edit configured to render inactive a first proto-spacer motif (PAM) in the first target sequence; a tRNA linker; a second editing cassette wherein the second editing cassette comprises a coding sequence for a second gRNA and a coding sequence for a second donor DNA, wherein the second donor DNA comprises a rational, desired edit to a second target sequence and an edit configured to render inactive a second proto-spacer motif (PAM) in the second target sequence; a coding sequence for a self-cleaving ribozyme; and a pol II terminator; wherein the first and second editing cassettes in the library of editing cassette constructs are different among editing cassettes constructs, and wherein homology exists between the library of editing cassette constructs and the first and second linear vector backbones.

2. The libraries of linear vector backbones and editing cassette constructs of claim 1 further comprising a third linear vector backbone comprising a coding sequence for a nuclease, a coding sequence for a third antibiotic resistance gene, and a yeast origin of replication, and wherein homology exists between the library of editing cassettes and the third linear vector backbones.

3. The libraries of linear vector backbones and editing cassette constructs of claim 2 further comprising a fourth linear vector backbone comprising a coding sequence for a nuclease, a coding sequence for a fourth antibiotic resistance gene, and a yeast origin of replication, and wherein homology exists between the library of editing cassettes and the fourth linear vector backbones.

4. The libraries of linear vector backbones and editing cassette constructs of claim 1 wherein the coding sequence for the nuclease in the first and second linear vector backbones is the coding sequence for the same nuclease.

5. The libraries of linear vector backbones and editing cassette constructs of claim 1 , wherein the first antibiotic resistance gene confers resistance to hygromycin and the second antibiotic resistance gene confers resistance to G418.

6. The libraries of linear vector backbones and editing cassette constructs of claim 1 , wherein the first and second linear vector backbones comprise the pol II promoter driving expression of the editing cassette construct.

7. The libraries of linear vector backbones and editing cassette constructs of claim 1 , wherein each linear vector backbone further comprises an origin of replication functional in bacteria.

8. The libraries of linear vector backbones and editing cassette constructs of claim 1 , wherein the self-cleaving ribozyme is a self-cleaving ribozyme in a hepatitis delta virus (HDV)-like ribozyme family, a self-cleaving ribozyme in a glucosamine-6-phosphate synthase ribozyme family, a self-cleaving ribozyme in a hammerhead ribozyme family, a self-cleaving ribozyme in a hairpin ribozyme family, a self-cleaving ribozyme in a Neurospora Varkud satellite ribozyme family, a self-cleaving ribozyme in a twister ribozyme family, a self-cleaving ribozyme in a twister sister ribozyme family, a self-cleaving ribozyme in a hatchet ribozyme family, or a self-cleaving ribozyme in a pistol ribozyme family.

9. The libraries of linear vector backbones and editing cassette constructs of claim 8 , wherein the self-cleaving ribozyme is a self-cleaving ribozyme in the hepatitis delta virus (HDV)-like ribozyme family.

10. The libraries of linear vector backbones and editing cassette constructs of claim 8 , wherein the self-cleaving ribozyme is a self-cleaving ribozyme in the glucosamine-6-phosphate synthase ribozyme family.

11. The libraries of linear vector backbones and editing cassette constructs of claim 8 , wherein the self-cleaving ribozyme is a self-cleaving ribozyme in the Neurospora Varkud satellite ribozyme family.

12. The libraries of linear vector backbones and editing cassette constructs of claim 8 , wherein the self-cleaving ribozyme is a self-cleaving ribozyme in the twister ribozyme family.

13. The libraries of linear vector backbones and editing cassette constructs of claim 8 , wherein the self-cleaving ribozyme is a self-cleaving ribozyme in the twister sister ribozyme family.

14. The libraries of linear vector backbones and editing cassette constructs of claim 1 , comprising a second self-cleaving ribozyme 3′ of the transcription start site.

15. The libraries of linear vector backbones and editing cassette constructs of claim 1 , wherein the pol II promoter is a cell-type specific promoter, a tissue-specific promoter, or a synthetic promoter.

16. The libraries of linear vector backbones and editing cassette constructs of claim 1 , wherein the pol II promoter is a constitutive fungal promoter.

17. The libraries of linear vector backbones and editing cassette constructs of claim 16 , wherein the constitutive fungal pol II promoter is a pPGK1, pTDH3, pENO2, pADH1, pTPI1, pTEF1, pTEF2, pYEF3, pRPL3, pRPL15A, pRPL4, pRPL8B, pSSA1, pSSB1, pCYC1, or pPDA1 promoter.

18. The libraries of linear vector backbones and editing cassette constructs of claim 1 , wherein the tRNA linker is an alanine tRNA.

19. The libraries of linear vector backbones and editing cassette constructs of claim 1 , wherein the tRNA linker is a glycine tRNA.

20. The libraries of linear vector backbones and editing cassette constructs of claim 1 , wherein the tRNA linker is a threonine tRNA.

21. The libraries of linear vector backbones and editing cassette constructs of claim 1 , wherein the pol II promoter is a constitutive mammalian promoter.

22. The libraries of linear vector backbones and editing cassette constructs of claim 21 , wherein the pol II promoter is a pCMV, pEF1a, pSV40, pPGK1, pUbc, human beta actin promoter, or pCAG promoter.

23. The libraries of linear vector backbones and editing cassette constructs of claim 1 , wherein the pol II promoter is an inducible promoter.

24. The libraries of linear vector backbones and editing cassette constructs of claim 23 , wherein an inducible promoter is a PHO5 promoter, a MET3 promoter, a CUP1 promoter, GAL1 promoter, or a GEV or LEV promoter system.

25. The libraries of linear vector backbones and editing cassette constructs of claim 1 , wherein the first gRNA in the first editing cassette is 5′ of the first donor DNA and wherein the second gRNA in the second editing cassette is 5′ of the second donor DNA.

26. The libraries of linear vector backbones and editing cassette constructs of claim 1 , wherein the first gRNA in the first editing cassette is 3′ of the first donor DNA and wherein the second gRNA in the second edit

Assignees

• Inscripta Inc

Inventors

• Stefani Skylar
• Tian Tian
• Gander Miles

Classifications

• C12N15/102

  Mutagenizing nucleic acids · CPC title

• C12N2800/80

  Vectors containing sites for inducing double-stranded breaks, e.g. meganuclease restriction sites · CPC title

• C12N2310/20

  involving clustered regularly interspaced short palindromic repeats [CRISPR] · CPC title

• C12N15/113

  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)} · CPC title

• C12N15/81

  for yeasts · CPC title