Tumor necrosis factor (TNF) family ligand trimer-containing antigen binding molecules
The invention relates to novel TNF family ligand trimer-containing antigen binding molecules comprising (a) at least one moiety capable of specific binding to a target cell antigen, (b) a polypeptide comprising three ectodomains of a TNF ligand family member or fragments thereof that are connected to each other by peptide linkers and (c) a Fc domain composed of a first and a second subunit capable of stable association, and to methods of producing these molecules and to methods of using the same.
1. A tumor necrosis factor (TNF) family ligand trimer-containing antigen binding molecule comprising
(a) at least one antigen binding domain comprising an antibody light chain variable region (VL) and an antibody heavy chain variable region (VH) capable of specific binding to a target cell antigen wherein the target cell antigen is Fibroblast Activation Protein (FAP), and
(b) a polypeptide comprising three ectodomains of a TNF ligand family member or fragments thereof that are connected to each other, wherein the TNF ligand family member is 4-1BBL, and
(c) an Fc domain composed of a first and a second subunit wherein the first and the second subunit are capable of stable association with each other, and wherein the antigen binding molecule activates the NFκB signaling pathway.
2. The TNF family ligand trimer-containing antigen binding molecule of claim 1 , wherein the polypeptide comprising three ectodomains of a TNF ligand family member or fragments thereof are connected to each other by peptide linkers.
3. The TNF family ligand trimer containing antigen binding molecule of claim 2 , wherein the polypeptide comprising the three ectodomains of a TNF ligand family member or fragments thereof that are connected to each other by peptide linkers is fused to the N- or C-terminal amino acid of one of the two subunits of the Fc domain, optionally through a peptide linker.
4. The TNF family ligand trimer-containing antigen binding molecule of claim 1 , wherein the ectodomain of the TNF ligand family member comprises an amino acid sequence selected from the group consisting of SEQ ID NO:1, SEQ ID NO: 2, SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:99, SEQ ID NO: 100, SEQ ID NO:101 and SEQ ID NO:102.
5. The TNF family ligand trimer-containing antigen binding molecule of claim 1 , wherein the polypeptide comprising three ectodomains of a TNF ligand family member or fragments thereof comprises an amino acid sequence selected from the group consisting of SEQ ID NO:5 and SEQ ID NO:103.
6. The TNF family ligand trimer-containing antigen binding molecule of claim 1 , wherein the polypeptide comprising three ectodomains of a TNF ligand family member or fragments thereof is fused at the C-terminal amino acid to an N-terminal amino acid of one of the subunits of the Fc domain.
7. The TNF family ligand trimer-containing antigen binding molecule of claim 1 , wherein the polypeptide comprising three ectodomains of a TNF ligand family member or fragments thereof is fused at the N-terminal amino acid to a C-terminal amino acid of one of the subunits of the Fc domain.
8. The TNF family ligand trimer-containing antigen binding molecule of claim 1 , wherein the antigen binding domain capable of specific binding to a target cell antigen is selected from the group consisting of an antibody fragment, a Fab molecule, a crossover Fab molecule, a single chain Fab molecule, a Fv molecule, a scFv molecule, a single domain antibody, an aVH and a scaffold antigen binding protein.
9. The TNF family ligand trimer-containing antigen binding molecule of claim 1 , wherein the antigen binding domain is a Fab molecule.
10. The TNF family ligand trimer-containing antigen binding molecule of claim 1 , wherein the antigen binding domain capable of specific binding to FAP comprises
(a) a VH domain comprising (i) CDR-H1 comprising the amino acid sequence of SEQ ID NO:9, (ii) CDR-H2 comprising the amino acid sequence of SEQ ID NO:10 and (iii) CDR-H3 comprising the amino acid sequence of SEQ ID NO:11, and a VL domain comprising
(iv) CDR-L1 comprising the amino acid sequence of SEQ ID NO:12, (v) CDR-L2 comprising the amino acid sequence of SEQ ID NO:13 and (vi) CDR-L3 comprising the amino acid sequence of SEQ ID NO:14, or
(b) a VH domain comprising (i) CDR-H1 comprising the amino acid sequence of SEQ ID NO:104, (ii) CDR-H2 comprising the amino acid sequence of SEQ ID NO:105 and (iii) CDR-H3 comprising the amino acid sequence of SEQ ID NO:106, and a VL domain comprising (iv) CDR-L1 comprising the amino acid sequence of SEQ ID NO:107, (v) CDR-L2 comprising the amino acid sequence of SEQ ID NO:108 and (vi) CDR-L3 comprising the amino acid sequence of SEQ ID NO:109.
11. The TNF family ligand trimer-containing antigen binding molecule of claim 1 , wherein the antigen binding domain capable of specific binding to FAP comprises a variable heavy chain comprising an amino acid sequence of SEQ ID NO:16 and a variable light chain comprising an amino acid sequence of SEQ ID NO:17 or wherein the antigen binding domain capable of specific binding to FAP comprises a variable heavy chain comprising an amino acid sequence of SEQ ID NO:110 and a variable light chain comprising an amino acid sequence of SEQ ID NO:111.
12. The TNF family ligand trimer-containing antigen binding molecule of claim 1 , wherein the Fc domain is an IgG domain.
13. The TNF family ligand trimer-containing antigen binding molecule of claim 12 , wherein the Fc domain is an IgG1 Fc domain comprising the amino acid substitutions at positions 234 and 235 (EU numbering) and/or 329 (EU numbering) of the IgG heavy chain.
14. The TNF family ligand trimer-containing antigen binding molecule of claim 1 , comprising only one antigen binding domain capable of specific binding to a target cell antigen.
15. The TNF family ligand trimer-containing antigen binding molecule of claim 1 , wherein the antigen binding molecule comprises
(i) a first heavy chain comprising the VH domain of a Fab molecule capable of specific binding to a target cell antigen,
(ii) a light chain comprising the VL domain of a Fab molecule capable of specific binding to a target cell antigen, and
(iii) a second heavy chain comprising the amino acid sequence of SEQ ID NO:5 or SEQ ID NO:103 or SEQ ID NO:8.
16. The TNF family ligand trimer-containing antigen binding molecule of claim 1 , wherein the antigen binding molecule comprises
(i) a first heavy chain comprising a VH domain comprising an amino acid sequence of SEQ ID NO:16 or a VH domain comprising an amino acid sequence of SEQ ID NO:110,
(ii) a light chain comprising a VL domain comprising an amino acid sequence of SEQ ID NO:17 or a VL domain comprising an amino acid sequence of SEQ ID NO:111, and
(iii) a second heavy chain comprising the amino acid sequence of SEQ ID NO:5 or SEQ ID NO:103 or SEQ ID NO:8.
17. The TNF family ligand trimer-containing antigen binding molecule of claim 1 , wherein the antigen binding molecule comprises two moieties capable of specific binding to a target cell antigen.
18. The TNF family ligand trimer-containing antigen binding molecule of claim 1 , wherein the antigen binding molecule comprises
(i) a first heavy chain comprising a VH domain of a Fab molecule capable of specific binding to a target cell antigen,
(ii) two light chains comprising each the VL domain of a Fab molecule capable of specific binding to a target cell antigen, and
(iii) a second heavy chain comprising a VH domain of a Fab molecule capable of specific binding to a target cell antigen and further comprises the amino acid sequence of SEQ ID NO:5 or SEQ ID NO:103 or SEQ ID NO:8.
19. The TNF family ligand trimer-containing antigen binding molecule of claim 18 , wherein the antigen binding molecule comprises
(i) a first heavy chain comprising a VH domain comprising an amino acid sequence of SEQ ID NO:16 or a VH domain comprising an amino acid sequence of SEQ ID NO:110,
(ii) two light chains comprising each a VL domain comprising an amino acid sequence of SEQ ID NO:17 or a VL domain comprising an amino acid sequence of SEQ ID NO:111, and
(iii) a second heavy chain comprising a VH domain comprising an amino acid sequence of SEQ ID NO:16 or a VH domain comprising an amino acid sequence of SEQ ID NO:110 and the amino acid sequence of SEQ ID NO:5 or SEQ ID NO:103 or SEQ ID NO:8.
20. The TNF family ligand trimer-containing antigen binding molecule of claim 12 , wherein the Fc domain is an IgG1 Fc domain.
21. The TNF family ligand trimer-containing antigen binding molecule of claim 12 , wherein the Fc domain is an IgG4 Fc domain.
22. A pharmaceutical composition comprising the TNF family ligand trimer-containing antigen binding molecule of claim 1 and at least one pharmaceutically acceptable excipient.