High-transduction-efficiency RAAV vectors, compositions, and methods of use
The present invention provides AAV capsid proteins comprising modification of one or a combination of the surface-exposed lysine, serine, threonine and/or tyrosine residues in the VP3 region. Also provided are rAAV virions comprising the AAV capsid proteins of the present invention, as well as nucleic acid molecules and rAAV vectors encoding the AAV capsid proteins of the present invention. Advantageously, the rAAV vectors and virions of the present invention have improved efficiency in transduction of a variety of cells, tissues and organs of interest, when compared to wild-type rAAV vectors and virions.
1. An AAV VP3 protein comprising a non-threonine amino acid residue at a position that corresponds to T491 of the wild-type AAV2 capsid protein of SEQ ID NO: 2.
2. The AAV VP3 protein according to claim 1 , further comprising a non-threonine amino acid residue at a position that corresponds to T251, T329, T330, T454, T455, T503, T550, T592, T581, T597, T671, T659, T660, T701, T713, or T716 of the wild-type AAV2 capsid protein of SEQ ID NO: 2.
3. The AAV VP3 protein according to claim 1 , further comprising a non-tyrosine amino acid residue at a position that corresponds to Y252, Y272, Y444, Y500, Y700, Y704, or Y730 of the wild-type AAV2 capsid protein of SEQ ID NO: 2.
4. The AAV VP3 protein according to claim 2 , comprising a valine (V) amino acid residue at a position that corresponds to T251, T329, T330, T454, T455, T503, T550, T592, T581, T597, T491, T671, T659, T660, T701, T713, or T716 of the wild-type AAV2 capsid protein of SEQ ID NO: 2.
5. The AAV VP3 protein according to claim 1 , comprising a valine (V) amino acid residue at a position that corresponds to T491 of the wild-type AAV2 capsid protein of SEQ ID NO: 2.
6. The AAV VP3 protein according to claim 1 , further comprising a non-tyrosine amino acid residue at a position that corresponds to Y730 of the wild-type AAV2 capsid protein of SEQ ID NO: 2.
7. The AAV VP3 protein according to claim 6 , comprising a phenylalanine (F) residue at a position that corresponds to Y730 of the wild-type AAV2 capsid protein of SEQ ID NO: 2.
8. A composition comprising (a) a AAV particle comprising the AAV VP3 protein in accordance with claim 1 ; and (b) a pharmaceutically-acceptable buffer, diluent, or vehicle.
9. The AAV VP3 protein according to claim 3 , wherein the non-tyrosine amino acid residue is at a position that corresponds to Y730 of the wild-type AAV2 VP3 protein of SEQ ID NO: 2, and the non-threonine amino acid residue is at a position that corresponds to T491 of the wild-type AAV2 VP3 protein of SEQ ID NO: 2.
10. The AAV VP3 protein according to claim 9 , comprising a phenylalanine (F) residue at a position that corresponds to Y730 of the wild-type AAV2 VP3 protein of SEQ ID NO: 2, and a valine (V) residue at a position that corresponds to T491 of the wild-type AAV2 VP3 protein of SEQ ID NO: 2.
11. The composition according to claim 8 , wherein the AAV particle comprises a VP3 protein further comprising a non-tyrosine amino acid residue at a position that corresponds to Y730 of the wild-type AAV2 VP3 protein of SEQ ID NO: 2.
12. The composition according to claim 11 , wherein the AAV particle comprises a VP3 protein comprising a phenylalanine (F) amino acid residue at a position that corresponds to Y730 of the wild-type AAV2 VP3 protein of SEQ ID NO: 2.
13. The composition according to claim 12 , wherein the AAV particle comprises a VP3 protein comprising a non-tyrosine amino acid residue at a position that corresponds to Y730 of the wild-type AAV2 VP3 protein of SEQ ID NO: 2 and a non-threonine amino acid residue at a position that corresponds to T491 of the wild-type AAV2 VP3 protein of SEQ ID NO: 2.
14. The composition according to claim 13 , wherein the AAV particle comprises a VP3 protein comprising a phenylalanine (F) residue at a position that corresponds to Y730 of the wild-type AAV2 VP3 protein of SEQ ID NO: 2 and a valine (V) residue at a position that corresponds to T491 of the wild-type AAV2 VP3 protein of SEQ ID NO: 2.
15. The AAV VP3 protein according to claim 1 , wherein the AAV VP3 protein is a recombinant AAV3 VP3 protein.
16. The composition according to claim 8 , wherein the AAV VP3 protein is a recombinant AAV3 VP3 protein.
17. A method of transducing a population of mammalian cells, comprising introducing into one or more cells of the population, a composition that comprises an effective amount of the composition of claim 8 .
18. The method according to claim 17 , wherein the AAV particle comprises a VP3 protein comprising a non-lysine amino acid residue at a position that corresponds to K459, K490, K532, K544, or K556 of the wild-type AAV2 VP3 protein of SEQ ID NO: 2 or K530, K547, or K569 of the wild-type AAV8 capsid protein of SEQ ID NO:8.
19. The method according to claim 17 , wherein the cell is a mammalian cell.
20. The method according to claim 17 , wherein the cell is a endothelial, epithelial, vascular, liver, lung, heart, pancreas, intestinal, kidney, muscle, bone, dendritic, cardiac, neural, blood, brain, fibroblast, or cancer cell.