Delivery systems and kits for gene editing
The present disclosure relates to compositions and methods for modifying a gene sequence, and for systems for delivering such compositions. For example, the disclosure relates to modifying a gene sequence using a CRISPR-Cas9 or other nucleic acid editing system, and methods and delivery systems for achieving such gene modification, such as viral or non-viral delivery systems.
1. A delivery system comprising:
(i) one or more guide RNA (gRNA) provided in a first delivery vehicle and
(ii) a nucleic acid editing system provided in a second delivery vehicle;
wherein the first delivery vehicle is a viral vector, a lipid-based delivery vehicle, or a polymer-based delivery vehicle, and
wherein the second delivery vehicle is a lipid-based delivery vehicle or polymer-based delivery vehicle; wherein the second delivery vehicle comprises cKK-E12.
2. The delivery system of claim 1 , wherein the second delivery vehicle is selected from the group consisting of lipids, liposomes, lipid encapsulation systems, nanoparticles, small nucleic acid-lipid particle (SNALP) formulations, polymers, and polymersomes.
3. The delivery system of claim 2 , wherein the second delivery vehicle is a lipid encapsulation system comprising one or more of a phospholipid, cholesterol, polyethylene glycol (PEG)-lipid, and a lipophilic compound that delivers the particle to the target tissue.
4. The delivery system of claim 1 , wherein the second delivery vehicle comprises 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine (DOPE), cholesterol C14-PEG2000, and cKK-E12.
5. The delivery system of claim 2 , wherein the second delivery vehicle has a size in the range of about 50 nm to about 5 μm.
6. The delivery system of claim 1 , wherein the nucleic acid editing system is a CRISPR-Cas system.
7. The delivery system of claim 6 , wherein the nucleic acid editing system is Cas9.
8. The delivery system of claim 1 , wherein the first delivery vehicle is a viral vector.
9. The delivery system of claim 8 , wherein the first delivery vehicle is selected from the group consisting of adeno-associated virus (AAV), adenovirus, retrovirus, and lentivirus vectors.
10. The delivery system of claim 9 , wherein the first delivery vehicle is AAV 2/8.
11. The delivery system of claim 1 , further comprising a repair template provided in the first delivery vehicle, the second delivery vehicle, or a third delivery vehicle.
12. A delivery system for CRISPR-Cas gene editing comprising:
(i) one or more guide RNA (gRNA) and a repair template provided in a first delivery vehicle and
(ii) a Cas mRNA provided in a second delivery vehicle,
wherein the first delivery vehicle is a viral vector, and
wherein the second delivery vehicle is a lipid nanoparticle.
13. The delivery system of claim 12 , wherein the repair template is selected from the group consisting of a DNA repair template, an mRNA repair template, an siRNA repair template, an miRNA repair template, and antisense oligonucleotide repair template.
14. The delivery system of claim 13 , wherein the repair template is covalently bound to the gRNA.
15. The delivery system of claim 13 , wherein the repair template is non-covalently bound to the gRNA.
16. The delivery system of claim 13 , wherein the gRNA is capable of hybridizing to a target sequence in a cell, and wherein the target sequence is associated with a genetic disease or disorder or a cancer.
17. The delivery system of claim 16 , wherein the target sequence is associated with an inborn error of metabolism selected from disorders of amino acid transport and metabolism, lipid or fatty acid transport and metabolism, carbohydrate transport and metabolism, and metal transport and metabolism.
18. The delivery system of claim 16 , wherein the target sequence is associated with hemophilia, cystic fibrosis, or sickle cell disease.
19. The delivery system of claim 12 , wherein the first delivery vehicle is an adeno-associated virus (AAV) vector.
20. The delivery system of claim 12 , wherein the first delivery vehicle is selected from the group consisting of adeno-associated virus (AAV), adenovirus, retrovirus, and lentivirus vectors.
21. The delivery system of claim 12 , wherein the second delivery vehicle comprises C12-200.
22. A kit comprising (i) one or more gRNA, (ii) a repair template, and (iii) a Cas mRNA, wherein (i) and (ii) are provided in the same or different viral vector and (iii) is provided in a lipid nanoparticle comprising one or more of a phospholipid, cholesterol, polyethylene glycol (PEG)-lipid, and a lipophilic compound that delivers the particle to the target tissue.
23. The delivery system of claim 16 , wherein the second delivery vehicle is capable of multiple administrations to the cell.
24. The delivery system of claim 16 , wherein the second delivery vehicle is capable of transient expression of the nucleic acid editing system in the cell.
25. The delivery system of claim 16 , wherein the second delivery vehicle is capable of tissue-specific expression of the nucleic acid editing system.
26. The delivery system of claim 16 , wherein the second delivery vehicle is capable of mediating efficient genome editing in the cell.
27. The delivery system of claim 16 , wherein the second delivery vehicle is capable of mediating genome editing in the cell with fewer off-target genetic changes relative to a delivery system providing gRNA and nucleic acid editing system in the same delivery vehicle.
28. The delivery system of claim 16 , wherein the second delivery vehicle is capable of achieving tissue distribution, circulation time, or biodegradation character adapted to treatment of the genetic disease or disorder or the cancer associated with the target sequence.
29. The delivery system of claim 16 , wherein the first delivery vehicle is capable of expressing the gRNA in the cell for at least 1 week.
30. The delivery system of claim 16 , wherein the first delivery vehicle is capable of expressing the gRNA in the cell for at least 2 weeks.
31. The delivery system of claim 16 , wherein the first delivery vehicle is capable of expressing the gRNA in the cell for at least 12 months.
32. The delivery system of claim 16 , wherein the second delivery vehicle is capable of expressing the nucleic acid editing system in the cell for 1 day to 5 days.
33. The delivery system of claim 16 , wherein the second delivery vehicle is capable of transient expression of the nucleic acid editing system.
34. The delivery system of claim 16 , wherein the second delivery vehicle is capable of minimizing off-target effects.
35. The delivery system of claim 16 , wherein the second delivery vehicle is capable of minimizing immunogenicity.
36. The delivery system of claim 20 , wherein the first delivery vehicle is an adeno-associated virus (AAV) capable of expressing the repair template in the cell for 2 years or longer.
37. The delivery system of claim 16 , wherein the ratio of the first delivery vehicle to the second delivery vehicle is optimized for consistent resolution of the genetic disease or disorder or the cancer.
38. The delivery system of claim 16 , wherein the second delivery vehicle produced reduced toxicity compared to delivery with a transfection reagent.
39. The delivery system of claim 16 , wherein the delivery system is capable of inducing repair of a disease gene in an adult animal.
40. The delivery system of claim 12 , wherein the delivery system is capable of a modification rate of 1% of a population of cells in a tissue of an adult animal.
41. The kit of claim 22 , wherein the viral vector is an adeno-associated virus (AAV).