Compositions and methods for immunotherapy
Compositions and methods for editing, e.g., altering a DNA sequence, within the TRBC1, TRBC2 and/or TRAC genes are provided. Compositions and methods for immunotherapy are provided, for example.
1 . A method of reducing the expression of an endogenous T cell receptor and inserting a heterologous immunological receptor at the TRAC locus, comprising delivering to a cell: (a) a TRAC guide RNA and a TRBC1/2 guide RNA; (b) an RNA-guided DNA binding agent, or a nucleic acid encoding an RNA-guided DNA binding agent; and (c) a nucleic acid encoding the heterologous immunological receptor,
wherein the TRAC guide RNA comprises:
i) a guide sequence that is SEQ ID NO: 90; or
ii) a guide sequence that is SEQ ID NO: 185; or
iii) a guide sequence that is SEQ ID NO: 214.
2 . The method of claim 1 , wherein the nucleic acid encoding the heterologous immunological receptor is flanked by sequences homologous to the TRAC locus.
3 . The method of claim 1 , wherein the TRAC guide RNA comprises a guide sequence that is SEQ ID NO: 90.
4 . The method of claim 1 , wherein the TRAC guide RNA comprises a guide sequence that is SEQ ID NO: 90 and the TRBC1/2 guide RNA comprises a guide sequence that is SEQ ID NO: 2.
5 . The method of claim 1 , wherein the heterologous immunological receptor is a heterologous T-cell receptor.
6 . The method of claim 5 , wherein the heterologous T-cell receptor recognizes a cancer antigen.
7 . The method of claim 6 , wherein the heterologous T-cell receptor is a WT1-specific T-cell receptor that recognizes WT1 or a fragment thereof.
8 . The method of claim 1 , wherein the heterologous immunological receptor is a chimeric antigen receptor.
9 . The method of claim 8 , wherein the chimeric antigen receptor recognizes a cancer antigen.
10 . The method of claim 1 , wherein the RNA-guided DNA binding agent is Cas9.
11 . The method of claim 1 , wherein the TRAC guide RNA and the TRBC1/2 guide RNA, the RNA-guided DNA binding agent or the nucleic acid encoding the RNA-guided DNA binding agent, and the nucleic acid encoding the heterologous immunological receptor are delivered to the cell via a vector, via transfection, via a lipid nanoparticle, or via microinjection.
12 . The method of claim 1 , wherein the TRAC guide RNA comprises SEQ ID NO: 186.
13 . The method of claim 1 , wherein the TRAC guide RNA comprises SEQ ID NO: 203.
14 . The method of claim 1 , wherein the TRAC guide RNA comprises a guide sequence that is SEQ ID NO: 185.
15 . The method of claim 1 , wherein the TRAC guide RNA comprises a guide sequence that is SEQ ID NO: 214.
16 . The method of claim 1 , wherein the TRBC1/2 guide RNA comprises a guide sequence that is SEQ ID NO: 2, a guide sequence that is 95% or 90% identical to SEQ ID NO: 2, or a guide sequence that is 18 or 19 contiguous nucleotides of SEQ ID NO: 2.
17 . A method of reducing the expression of an endogenous T cell receptor and inserting a heterologous immunological receptor at the TRAC locus, comprising delivering to a cell: (a) a TRAC guide RNA; (b) an RNA-guided DNA binding agent, or a nucleic acid encoding an RNA-guided DNA binding agent; and (c) a nucleic acid encoding the heterologous immunological receptor,
wherein the TRAC guide RNA comprises:
i) a guide sequence that is SEQ ID NO: 90; or
ii) a guide sequence that is SEQ ID NO: 185; or
iii) a guide sequence that is SEQ ID NO: 214.
18 . The method of claim 17 , wherein the nucleic acid encoding the heterologous immunological receptor is flanked by sequences homologous to the TRAC locus.
19 . The method of claim 17 , wherein the TRAC guide RNA comprises a guide sequence that is SEQ ID NO: 90.
20 . The method of claim 17 , wherein the TRAC guide RNA comprises a guide sequence that is SEQ ID NO: 185.
21 . The method of claim 17 , wherein the TRAC guide RNA comprises a guide sequence that is SEQ ID NO: 214.
22 . The method of claim 17 , wherein the TRAC guide RNA comprises SEQ ID NO: 186.
23 . The method of claim 17 , wherein the TRAC guide RNA comprises SEQ ID NO: 203.
24 . The method of claim 17 , wherein the heterologous immunological receptor is a heterologous T-cell receptor.
25 . The method of claim 24 , wherein the heterologous T-cell receptor recognizes a cancer antigen.
26 . The method of claim 25 , wherein the heterologous T-cell receptor is a WT1-specific T-cell receptor that recognizes WT1 or a fragment thereof.
27 . The method of claim 17 , wherein the heterologous immunological receptor is a chimeric antigen receptor.
28 . The method of claim 27 , wherein the chimeric antigen receptor recognizes a cancer antigen.
29 . The method of claim 17 , wherein the RNA-guided DNA binding agent is Cas9.
30 . The method of claim 17 , wherein the TRAC guide RNA, the RNA-guided DNA binding agent or the nucleic acid encoding the RNA-guided DNA binding agent, and the nucleic acid encoding the heterologous immunological receptor are delivered to the cell via a vector, via transfection, via a lipid nanoparticle, or via microinjection.