Anti-transferrin receptor antibodies with tailored affinity
Herein is reported an anti-transferrin receptor antibody that specifically binds to human transferrin receptor and cynomolgus transferrin receptor, which comprises i) a humanized heavy chain variable domain derived from the heavy chain variable domain of SEQ ID NO: 01, and ii) a humanized light chain variable domain derived from the light chain variable domain of SEQ ID NO: 26, wherein the antibody has an off-rate for the human transferrin receptor that is equal to or less than (i.e. at most) the off-rate of the anti-transferrin receptor antibody 128.1 for the cynomolgus transferrin receptor, whereby the off-rates are determined by surface plasmon resonance, and whereby the anti-transferrin receptor antibody 128.1 has a heavy chain variable domain of SEQ ID NO: 64 and a light chain variable domain of SEQ ID NO: 65.
1. A method for transporting an antibody across a blood-brain barrier in a subject, comprising administering to the subject an effective amount of a humanized antibody comprising an antigen binding domain that binds to human transferrin receptor and comprises a heavy chain variable domain comprising the hypervariable regions (HVRs) of SEQ ID NO: 66, 68, and 72, and a light chain variable domain comprising the HVRs of SEQ ID NO: 75, 76, and 78.
2. The method according to claim 1 , wherein the first antigen binding domain comprises a heavy chain variable domain of SEQ ID NO: 24 and a light chain variable domain of SEQ ID NO: 37.
3. The method according to claim 1 , wherein the antibody comprises a second antigen binding domain that binds a brain antigen.
4. The method according to claim 3 , wherein the second antigen binding domain binds to Abeta, alpha-synuclein, or CD20.
5. The method according to claim 3 , wherein the second antigen binding domain binds to alpha-synuclein and comprises:
a) a heavy chain variable domain of SEQ ID NO: 93 and a light chain variable domain of SEQ ID NO: 94, or
b) a heavy chain variable domain of SEQ ID NO: 83 and a light chain variable domain of SEQ ID NO: 84, or
c) a heavy chain variable domain of SEQ ID NO: 85 and a light chain variable domain of SEQ ID NO: 86, or
d) a heavy chain variable domain of SEQ ID NO: 87 and a light chain variable domain of SEQ ID NO: 88, or
e) a heavy chain variable domain of SEQ ID NO: 91 and a light chain variable domain of SEQ ID NO: 92, or
f) a heavy chain variable domain of SEQ ID NO: 89 and a light chain variable domain of SEQ ID NO: 90.
6. The method according to claim 3 , wherein the second antigen binding domain binds to CD20 and comprises a heavy chain variable domain of SEQ ID NO: 79 and a light chain variable domain of SEQ ID NO: 80.
7. The method according to claim 3 , wherein the second antigen binding domain binds to Abeta and comprises a heavy chain variable domain of SEQ ID NO: 81 and a light chain variable domain of SEQ ID NO: 82.
8. The method according to claim 3 , wherein the humanized antibody is
a) a full length antibody of the human subclass IgG1, or
b) a full length antibody of the human subclass IgG4, or
c) a full length antibody of the human subclass IgG1 with the mutations L234A, L235A and P329G,
d) a full length antibody of the human subclass IgG4 with the mutations S228P, L235E and optionally P329G,
e) a full length antibody of the human subclass IgG1 with the mutations L234A, L235A and P329G in both heavy chains and the mutations T366W and S354C in one heavy chain and the mutations T366S, L368A, Y407V and Y349C in the respective other heavy chain, or
f) a full length antibody of the human subclass IgG4 with the mutations S228P, L235E and optionally P329G in both heavy chains and the mutations T366W and S354C in one heavy chain and the mutations T366S, L368A, Y407V and Y349C in the respective other heavy chain.
9. The method according to claim 1 , wherein the humanized antibody comprises a homodimeric Fc-region of the human IgG1 subclass optionally with the mutations P329G, L234A and L235A.
10. The method according to claim 1 , wherein the humanized antibody comprises a homodimeric Fc-region of the human IgG4 subclass optionally with the mutations P329G, S228P and L235E.
11. The method according to claim 3 , wherein the humanized antibody comprises a heterodimeric Fc-region in which
a) one Fc-region polypeptide comprises the mutation T366W, and the other Fc-region polypeptide comprises the mutations T366S, L368A and Y407V, or
b) one Fc-region polypeptide comprises the mutations T366W and Y349C, and the other Fc-region polypeptide comprises the mutations T366S, L368A, Y407V, and S354C, or
c) one Fc-region polypeptide comprises the mutations T366W and S354C, and the other Fc-region polypeptide comprises the mutations T366S, L368A, Y407V and Y349C.
12. The method according to claim 3 , wherein the humanized antibody comprises a heterodimeric Fc-region of the human IgG4 subclass in which both Fc-region polypeptides comprise the mutations P329G, L234A and L235A and
a) one Fc-region polypeptide comprises the mutation T366W, and the other Fc-region polypeptide comprises the mutations T366S, L368A and Y407V, or
b) one Fc-region polypeptide comprises the mutations T366W and Y349C, and the other Fc-region polypeptide comprises the mutations T366S, L368A, Y407V, and S354C, or
c) one Fc-region polypeptide comprises the mutations T366W and S354C, and the other Fc-region polypeptide comprises the mutations T366S, L368A, Y407V and Y349C.
13. The method according to claim 1 , wherein the humanized antibody comprises a heterodimeric Fc-region of the human IgG4 subclass whereof both Fc-region polypeptides comprise the mutations P329G, S228P and L235E and
a) one Fc-region polypeptide comprises the mutation T366W, and the other Fc-region polypeptide comprises the mutations T366S, L368A and Y407V, or
b) one Fc-region polypeptide comprises the mutations T366W and Y349C, and the other Fc-region polypeptide comprises the mutations T366S, L368A, Y407V, and S354C, or
c) one Fc-region polypeptide comprises the mutations T366W and S354C, and the other Fc-region polypeptide comprises the mutations T366S, L368A, Y407V and Y349C.
14. The method according to claim 3 , wherein the subject has neurological disorder.
15. The method according to claim 14 , wherein the neurological disorder is a neuropathy disorder, a neurodegenerative disease, cancer, an ocular disease disorder, a seizure disorder, a lysosomal storage disease, amyloidosis, a viral or microbial disease, ischemia, a behavioral disorder, CNS inflammation, Alzheimer's Disease, Parkinson's Disease, multiple sclerosis, CD20 positive cancer with brain metastases, or Her2 positive cancer with brain metastases.
16. The method according to claim 1 , wherein the antibody is coupled to a compound.
17. The method according to claim 16 , wherein the compound is a therapeutic compound.
18. The method according to claim 16 , wherein the compound is an imaging agent or a label.
19. The method according to claim 16 , wherein the subject has neurological disorder.
20. The method according to claim 19 , wherein the neurological disorder is a neuropathy disorder, a neurodegenerative disease, cancer, an ocular disease disorder, a seizure disorder, a lysosomal storage disease, amyloidosis, a viral or microbial disease, ischemia, a behavioral disorder, CNS inflammation, Alzheimer's Disease, Parkinson's Disease, multiple sclerosis, CD20 positive cancer with brain metastases, or Her2 positive cancer with brain metastases.