TNF alpha antibody or fragment thereof and methods of use
The present invention relates to anti-TNF alpha binding members and in particular to monovalent, high potency TNF alpha-binding antibody fragments being highly stable and soluble. Such binding members may be used in the treatment of inflammatory and other diseases as well as in diagnostics. Also provided are related nucleic acids, vectors, cells, and compositions.
1. An antibody or fragment thereof having a binding specificity to TNF alpha, the antibody or fragment thereof comprising
(i) the variable heavy chain CDR-H1, CDR-H2 and CDR-H3 sequences as set forth in SEQ ID Nos: 6, 7 and 8; and
(ii) the variable light chain CDR-L1, CDR-L2 and CDR-L3 sequences as set forth in SEQ ID Nos: 3, 4 and 5.
2. The antibody or fragment thereof of claim 1 , wherein the antibody or fragment thereof has an IC 50 with regard to human TNF alpha of lower than 50 pM.
3. The antibody or fragment thereof of claim 1 , being humanized.
4. The antibody or fragment thereof of claim 1 , comprising
(i) a variable light chain as set forth in SEQ ID No. 1; and/or
(ii) a variable heavy chain as set forth in SEQ ID No. 2.
5. The antibody or fragment thereof of claim 1 , further comprising a linker sequence.
6. The antibody or fragment thereof of claim 5 , comprising SEQ ID No. 9.
7. The antibody or fragment thereof of claim 5 , wherein the linker sequence is the sequence set forth in SEQ ID No: 10.
8. The antibody or fragment thereof of claim 1 , wherein the variable heavy chain further comprises at least one of the following residues:
(i) Serine (S) at heavy chain amino acid position 12 (according to AHo numbering);
(ii) Serine (S) or Threonine (T) at heavy chain amino acid position 103 (according to AHo numbering); and/or
(iii) Serine (S) or Threonine (T) at heavy chain amino acid position 144 (according to AHo numbering).
9. The antibody or fragment thereof of claim 1 , being monovalent or multivalent, wherein the antibody or fragment thereof is optionally bispecific.
10. The antibody or fragment thereof of claim 9 , wherein the antibody or fragment thereof is a diabody, a single-chain diabody or a tandem scFv.
11. The antibody or fragment thereof of claim 1 , remaining at least 93% monomeric after incubation for 1 week at 37° C. at a concentration of 10mg/ml PBS pH7.2.
12. The antibody or fragment thereof of claim 1 , being chemically or biologically modified.
13. The antibody or fragment thereof of claim 12 , being glycosylated, PEGylated or HESylated.
14. The antibody or fragment thereof of claim 1 , wherein the antibody or fragment thereof is a monovalent antibody or fragment thereof.
15. The antibody or fragment thereof of claim 14 , wherein the antibody or fragment thereof is a scFv.
16. The antibody or fragment thereof of claim 1 , wherein the antibody fragment is a Fab, a Fab′, a F(ab)′ 2 , a scFv, or a Fv fragment.
17. A kit comprising the antibody or fragment thereof of claim 1 together with a packaged combination of reagents with instructions.
18. A composition comprising the antibody or fragment thereof claim 1 ; and further a suitable carrier, diluent or excipient.
19. The composition of claim 18 , being a cosmetic, a diagnostic or a pharmaceutical composition.
20. The composition of claim 19 , being, a pharmaceutical composition and the carrier being a pharmaceutically acceptable carrier, diluent or excipient.
21. The composition of claim 20 , being in a form suitable for parenteral, oral, rectal, systemic, urogenital, topical, intravitreal, intraocular, otic, intranasal, dermal, sublingual, or buccal administration.
22. A method of producing the antibody or fragment thereof of claim 1 , the method comprising:
(i) cultivating an isolated host cell comprising a nucleic acid molecule comprising a sequence encoding the antibody or fragment thereof of claim 1 under conditions adequate for recombinant protein expression, thereby allowing the antibody or fragment thereof to be expressed;
(ii) recovering the expressed antibody or fragment thereof; and
(iii) optionally purifying the antibody or fragment thereof.
23. A method of producing the antibody or fragment thereof of claim 1 , the method comprising:
(a) contacting a cell-free expression system with a nucleic acid product template, the nucleic acid product template encoding the antibody of fragment thereof according to claim 1 ;
(b) allowing transcription and translation of the nucleic acid product template to occur, thereby allowing a reaction mixture to be formed;
(c) recovering the antibody or fragment thereof from the reaction mixture; and
(d) optionally purifying the antibody or fragment thereof.
24. A method of detecting the presence of TNF alpha in a biological sample, the method comprising:
(i) contacting the biological sample with the antibody or fragment thereof of claim 1 under conditions permissive for specific binding of the antibody or fragment thereof to TNF alpha, and
(ii) detecting whether a complex between the antibody or fragment thereof and TNF alpha is formed.