Collection and methods for its use
The present disclosure enables collections of variable heavy chain and variable light chain pairs comprising, in part, germline protein sequences that are pre-selected for functional properties relevant to developability, wherein the collections may be used to select against any antigen using, for example, phage display.
1. A collection of nucleic acids encoding synthetic antibodies or functional fragments thereof, wherein the antibodies or functional fragments comprise variable heavy chain and variable light chain pairs, wherein the framework regions of the variable heavy chain and variable light chain pairs comprise germline protein sequences selected from twenty or more of the variable heavy chain and variable light chain pairs VH1-18 (SEQ ID NO: 204)/VK1-39 (SEQ ID NO: 236); VH1-18 (SEQ ID NO: 204)/VK3-15 (SEQ ID NO: 238); VH1-18 (SEQ ID NO: 204)/VK3-20 (SEQ ID NO: 239); VH1-46 (SEQ ID NO: 205)/VK3-15 (SEQ ID NO: 238); VH1-46 (SEQ ID NO: 205)/VL1-51 (SEQ ID NO: 252); VH1-46 (SEQ ID NO: 205)/VL3-21 (SEQ ID NO: 257); VH1-69*01 (SEQ ID NO: 206)/VL1-51 (SEQ ID NO: 252); VH3-07 (SEQ ID NO: 207)/VK1-12 (SEQ ID NO: 233); VH3-07 (SEQ ID NO: 207)/VK1-16 (SEQ ID NO: 234); VH3-07 (SEQ ID NO: 207)/VK1-27 (SEQ ID NO: 235); VH3-07 (SEQ ID NO: 207)/VK1-39 (SEQ ID NO: 236); VH3-07 (SEQ ID NO: 207)/VK3-15 (SEQ ID NO: 238); VH3-07 (SEQ ID NO: 207)/VL1-47 (SEQ ID NO: 251); VH3-07 (SEQ ID NO: 207)/VL1-51 (SEQ ID NO: 252); VH3-11 (SEQ ID NO: 208)/VK1-05 (SEQ ID NO: 230); VH3-11 (SEQ ID NO: 208)/VK1-39 (SEQ ID NO: 236); VH3-11 (SEQ ID NO: 208)/VK3-15 (SEQ ID NO: 238); VH3-11 (SEQ ID NO: 208)/VL1-40 (SEQ ID NO: 250); VH3-11 (SEQ ID NO: 208)/VL1-47 (SEQ ID NO: 251); VH3-11 (SEQ ID NO: 208)/VL1-51 (SEQ ID NO: 252); VH3-11 (SEQ ID NO: 208)/VL2-23 (SEQ ID NO: 255); VH3-15 (SEQ ID NO: 209)/VK1-05 (SEQ ID NO: 230); VH3-15 (SEQ ID NO: 209)/VK1-06 (SEQ ID NO: 231); VH3-15 (SEQ ID NO: 209)/VK1-12 (SEQ ID NO: 233); VH3-15 (SEQ ID NO: 209)/VK1-16 (SEQ ID NO: 234); VH3-15 (SEQ ID NO: 209)/VK1-27 (SEQ ID NO: 235); VH3-15 (SEQ ID NO: 209)/VK3-11 (SEQ ID NO: 237); VH3-15 (SEQ ID NO: 209)/VL1-40 (SEQ ID NO: 250); VH3-15 (SEQ ID NO: 209)/VL1-47 (SEQ ID NO: 251); VH3-15 (SEQ ID NO: 209)/VL1-51 (SEQ ID NO: 252); VH3-15 (SEQ ID NO: 209)/VL2-14 (SEQ ID NO: 254); VH3-21 (SEQ ID NO: 210)/VK1-12 (SEQ ID NO: 233); VH3-21 (SEQ ID NO: 210)/VK1-27 (SEQ ID NO: 235); VH3-21 (SEQ ID NO: 210)/VL2-11 (SEQ ID NO: 253); VH3-23 (SEQ ID NO: 211)/VK1-39 (SEQ ID NO: 236); VH3-23 (SEQ ID NO: 211)/VK3-15 (SEQ ID NO: 238); VH3-23 (SEQ ID NO: 211)/VL2-23 (SEQ ID NO: 255); VH3-23 (SEQ ID NO: 211)/VL3-1 (SEQ ID NO: 256); VH3-30 (SEQ ID NO: 212)/VK3-20 (SEQ ID NO: 239); VH3-53 (SEQ ID NO: 213)/VK3-15 (SEQ ID NO: 238); VH3-53 (SEQ ID NO: 213)/VL2-11 (SEQ ID NO: 253); VH3-74 (SEQ ID NO: 214)/VK1-05 (SEQ ID NO: 230); VH3-74 (SEQ ID NO: 214)/VK1-06 (SEQ ID NO: 231); VH3-74 (SEQ ID NO: 214)/VK1-12 (SEQ ID NO: 233); VH3-74 (SEQ ID NO: 214)/VK1-27 (SEQ ID NO: 235); VH3-74 (SEQ ID NO: 214)/VK3-20 (SEQ ID NO: 239); VH3-74 (SEQ ID NO: 214)/VL1-51 (SEQ ID NO: 252); VH5-51 (SEQ ID NO: 215)/VK1-39 (SEQ ID NO: 236); VH5-51 (SEQ ID NO: 215)/VL1-40 (SEQ ID NO: 250); VH5-51 (SEQ ID NO: 215)/VL1-51 (SEQ ID NO: 252); VH6-1 (SEQ ID NO: 216)/VK1-09 (SEQ ID NO: 232); VH6-1 (SEQ ID NO: 216)/VK3-15 (SEQ ID NO: 238); VH6-1 (SEQ ID NO: 216)/VK3-20 (SEQ ID NO: 239) and VH6-1 (SEQ ID NO: 216)/VL1-51 (SEQ ID NO: 252).
2. A collection of nucleic acids according to claim 1 , wherein the antibodies or functional fragments comprise variable heavy chain and variable light chain framework regions comprising germline protein sequences of a germline protein pair, wherein said germline protein pair comprises the following properties:
i) an expression yield in Fab format of at least 2.5 mg/L;
ii) thermal stability at 70° C. or above in Fab format;
iii) monomeric content (% monomer) in Fab format of at least 98% as determined by SEC;
iv) an expression yield in IgG1 format of at least 30 mg/L;
v) thermal stability at 73° C. or above in IgG1 format; and
vii) monomeric content (% monomer) in IgG1 format of at least 99% as determined by SEC.
3. A collection of nucleic acids according to claim 1 , wherein the framework regions of the variable heavy chain and variable light chain pairs comprise germline protein sequences selected from twenty five or more of the variable heavy chain and variable light chain pairs.
4. A collection of nucleic acids according to claim 3 , wherein the framework regions of the variable heavy chain and variable light chain pairs comprise germline protein sequences selected from thirty or more of the variable heavy chain and variable light chain pairs.
5. A collection of nucleic acids according to claim 4 , wherein the framework regions of the variable heavy chain and variable light chain pairs comprise germline protein sequences selected from thirty three or more of the variable heavy chain and variable light chain pairs.
6. A collection of nucleic acids according to claim 5 , wherein the antibodies or fragments thereof comprise variable heavy chain and variable light chain pairs, wherein the framework regions of the variable heavy chain and variable light chain pairs comprise the germline protein sequences of the variable heavy chain and variable light chain pairs VH1-18 (SEQ ID NO: 204)/VK3-20 (SEQ ID NO: 239); VH1-46 (SEQ ID NO: 205)/VK3-15 (SEQ ID NO: 238); VH1-46 (SEQ ID NO: 205)/VL1-51 (SEQ ID NO: 252); VH1-69*01 (SEQ ID NO: 206)/VL1-51 (SEQ ID NO: 252); VH3-07 (SEQ ID NO: 207)/VK1-12 (SEQ ID NO: 233); VH3-07 (SEQ ID NO: 207)/VK1-27 (SEQ ID NO: 235); VH3-07 (SEQ ID NO: 207)/VK3-15 (SEQ ID NO: 238); VH3-07 (SEQ ID NO: 207)/VL1-47 (SEQ ID NO: 251); VH3-07 (SEQ ID NO: 207)/VL1-51 (SEQ ID NO: 252); VH3-11 (SEQ ID NO: 208)/VL1-40 (SEQ ID NO: 250); VH3-11 (SEQ ID NO: 208)/VL1-47 (SEQ ID NO: 251); VH3-11 (SEQ ID NO: 208)/VL1-51 (SEQ ID NO: 252); VH3-11 (SEQ ID NO: 208)/VL2-23 (SEQ ID NO: 255); VH3-15 (SEQ ID NO: 209)/VK1-05 (SEQ ID NO: 230); VH3-15 (SEQ ID NO: 209)/VK1-06 (SEQ ID NO: 231); VH3-15 (SEQ ID NO: 209)/VK1-12 (SEQ ID NO: 233); VH3-15 (SEQ ID NO: 209)/VK1-27 (SEQ ID NO: 235); VH3-15 (SEQ ID NO: 209)/VK3-11 (SEQ ID NO: 237); VH3-15 (SEQ ID NO: 209)/VL1-51 (SEQ ID NO: 252); VH3-21 (SEQ ID NO: 210)/VK1-12 (SEQ ID NO: 233); VH3-23 (SEQ ID NO: 211)/VK3-15 (SEQ ID NO: 238); VH3-53 (SEQ ID NO: 213)/VK3-15 (SEQ ID NO: 238); VH3-53 (SEQ ID NO: 213)/VL2-11 (SEQ ID NO: 253); VH3-74 (SEQ ID NO: 214)/VK1-05 (SEQ ID NO: 230); VH3-74 (SEQ ID NO: 214)/VK1-06 (SEQ ID NO: 231); VH3-74 (SEQ ID NO: 214)/VK1-12 (SEQ ID NO: 233); VH3-74 (SEQ ID NO: 214)/VK3-20 (SEQ ID NO: 239); VH5-51 (SEQ ID NO: 215)/VK1-39 (SEQ ID NO: 236); VH5-51 (SEQ ID NO: 215)/VL1-40 (SEQ ID NO: 250); VH5-51 (SEQ ID NO: 215)/VL1-51 (SEQ ID NO: 252); VH6-1 (SEQ ID NO: 216)/VK1-09 (SEQ ID NO: 232); VH6-1 (SEQ ID NO: 216)/VK3-20 (SEQ ID NO: 239) and VH6-1 (SEQ ID NO: 216)/VL1-51 (SEQ ID NO: 252).
7. A collection of nucleic acids according to claim 6 , wherein the antibodies or fragments comprise variable heavy chain and variable light chain framework regions comprising germline protein sequences of a germline protein pair, wherein said germline protein pair comprises the following properties:
i) an expression yield in Fab format of at least 2.5 mg/L;
ii) thermal stability at 70° C. or above in Fab format;
iii) monomeric content (% monomer) in Fab format of at least 99% as determined by SEC;
iv) an expression yield in IgG1 format of at least 30 mg/L;
v) thermal stability at 73° C. or above in IgG1 format;
vi) monomeric content (% monomer) in IgG1 format of at least 99% as determined by SEC, and
vii) an isoelectric point in IgG1 format of at least 8.3.
8. A collection of nucleic acids according to claim 6 , wherein the framework regions of the variable heavy chain and variable light chain pairs comprise germline protein sequences further selected from the variable heavy chain and variable light chain pairs VH3-23 (SEQ ID NO: 211)/VK1-39 (SEQ ID NO: 236); VH3-23 (SEQ ID NO: 211)/VL2-23 (SEQ ID NO: 255); and VH3-23 (SEQ ID NO: 211)/VL3-1 (SEQ ID NO: 256).
9. A collection of nucleic acids according to claim 5 , wherein the framework regions of the variable heavy chain and variable light chain pairs comprise germline protein sequences selected from thirty six or more of the variable heavy chain and variable light chain pairs.
10. A collection of nucleic acids according to claim 9 , wherein the antibodies or functional fragments comprise variable heavy chain and variable light chain pairs, wherein the framework regions of the variable heavy chain and variable light chain pairs comprise germline protein sequences of the variable heavy chain and variable light chain pairs VH1-18 (SEQ ID NO: 204)/VK3-20 (SEQ ID NO: 239); VH1-46 (SEQ ID NO: 205)/VK3-15 (SEQ ID NO: 238); VH1-46 (SEQ ID NO: 205)/VL1-51 (SEQ ID NO: 252); VH1-69*01 (SEQ ID NO: 206)/VL1-51 (SEQ ID NO: 252); VH3-07 (SEQ ID NO: 207)/VK1-12 (SEQ ID NO: 233); VH3-07 (SEQ ID NO: 207)/VK1-27 (SEQ ID NO: 235); VH3-07 (SEQ ID NO: 207)/VK3-15 (SEQ ID NO: 238); VH3-07 (SEQ ID NO: 207)/VL1-47 (SEQ ID NO: 251); VH3-07 (SEQ ID NO: 207)/VL1-51 (SEQ ID NO: 252); VH3-11 (SEQ ID NO: 208)/VL1-40 (SEQ ID NO: 250); VH3-11 (SEQ ID NO: 208)/VL1-47 (SEQ ID NO: 251); VH3-11 (SEQ ID NO: 208)/VL1-51 (SEQ ID NO: 252); VH3-11 (SEQ ID NO: 208)/VL2-23 (SEQ ID NO: 255); VH3-15 (SEQ ID NO: 209)/VK1-05 (SEQ ID NO: 230); VH3-15 (SEQ ID NO: 209)/VK1-06 (SEQ ID NO: 231); VH3-15 (SEQ ID NO: 209)/VK1-12 (SEQ ID NO: 233); VH3-15 (SEQ ID NO: 209)/VK1-27 (SEQ ID NO: 235); VH3-15 (SEQ ID NO: 209)/VK3-11 (SEQ ID NO: 237); VH3-15 (SEQ ID NO: 209)/VL1-51 (SEQ ID NO: 252); VH3-21 (SEQ ID NO: 210)/VK1-12 (SEQ ID NO: 233); VH3-23 (SEQ ID NO: 211)/VK1-39 (SEQ ID NO: 236); VH3-23 (SEQ ID NO: 211)/VK3-15 (SEQ ID NO: 238); VH3-23 (SEQ ID NO: 211)/VL2-23 (SEQ ID NO: 255); VH3-23 (SEQ ID NO: 211)/VL3-1 (SEQ ID NO: 256); VH3-53 (SEQ ID NO: 213)/VK3-15 (SEQ ID NO: 238); VH3-53 (SEQ ID NO: 213)/VL2-11 (SEQ ID NO: 253); VH3-74 (SEQ ID NO: 214)/VK1-05 (SEQ ID NO: 230); VH3-74 (SEQ ID NO: 214)/VK1-06 (SEQ ID NO: 231); VH3-74 (SEQ ID NO: 214)/VK1-12 (SEQ ID NO: 233); VH3-74 (SEQ ID NO: 214)/VK3-20 (SEQ ID NO: 239); VH5-51 (SEQ ID NO: 215)/VK1-39 (SEQ ID NO: 236); VH5-51 (SEQ ID NO: 215)/VL1-40 (SEQ ID NO: 250); VH5-51 (SEQ ID NO: 215)/VL1-51 (SEQ ID NO: 252); VH6-1 (SEQ ID NO: 216)/VK1-09 (SEQ ID NO: 232); VH6-1 (SEQ ID NO: 216)/VK3-20 (SEQ ID NO: 239) and VH6-1 (SEQ ID NO: 216)/VL1-51 (SEQ ID NO: 252).
11. A collection of nucleic acids according to claim 10 , wherein the antibodies or functional fragments comprise variable heavy chain and variable light chain framework regions comprising germline protein sequences of a germline protein pair, wherein said germline protein pair comprises the following properties:
i) an expression yield in Fab format of at least 2.5 mg/L;
ii) thermal stability at 70° C. or above in Fab format;
iii) monomeric content (% monomer) in Fab format of at least 98% as determined by SEC;
iv) an expression yield in IgG1 format of at least 30 mg/L;
v) thermal stability at 73° C. or above in IgG1 format; and
vii) monomeric content (% monomer) in IgG1 format of at least 99% as determined by SEC.
12. A collection of nucleic acids according to claim 11 , wherein
i) the expression yield in Fab format is determined by UV-spectrophotometry using an extinction coefficient of 1.538 mL/mg and measuring absorbance at 280 nm;
ii) the thermal stability in Fab format is determined by differential scanning fluorometry using PBS buffer;
iii) the monomeric content (% monomer) in Fab format is determined by size exclusion chromatography using a Superdex75 HR10/30 column and Gibco D-PBS buffer at pH 7.4;
iv) the expression yield in IgG1 format is determined by UV-spectrophotometry using an extinction coefficient of 1.369 mL/mg and measuring absorbance at 280 nm;
v) the thermal stability in IgG1 format is determined by differential scanning fluorometry using PBS buffer; and
vi) the monomeric content (% monomer) in IgG1 format is determined by size exclusion chromatography using a Tosoh TSK-Gel G3000SWxl column and Gibco D-PBS buffer at pH 7.4.
13. The collection of nucleic acids according to claim 10 , wherein said antibodies or functional fragments thereof comprise one or more complementarity determining regions comprising germline protein sequences from the respective variable heavy chain and variable light chain pairs.
14. The collection of nucleic acids according to claim 13 , wherein said antibodies or functional fragments thereof comprise CDR1 regions comprising germline protein sequences from the respective variable heavy chain and variable light chain pairs depicted in SEQ ID NOs: 204-216, 230-239 and 250-257.
15. The collection of nucleic acids according to claim 14 , wherein said antibodies or fragments thereof comprise HCDR1 regions from the respective HCDR1 regions depicted in SEQ ID NOs: 204-216.
16. The collection of nucleic acids according to claim 14 , wherein said antibodies or fragments thereof comprise LCDR1 regions from the respective LCDR1 regions depicted in SEQ ID NOs: 230-239 and 250-257.
17. The collection of nucleic acids according to claim 13 , wherein said antibodies or functional fragments thereof comprise CDR2 regions comprising germline protein sequences from the respective variable heavy chain and variable light chain pairs depicted in SEQ ID NOs: 204-216, 230-239 and 250-257.
18. The collection of nucleic acids according to claim 17 , wherein said antibodies or fragments thereof comprise HCDR2 regions from the respective HCDR2 regions depicted in SEQ ID NOs: 204-216.
19. The collection of nucleic acids according to claim 17 , wherein said antibodies or fragments thereof comprise LCDR2 regions from the respective LCDR2 regions depicted in SEQ ID NOs: 230-239 and 250-257.
20. The collection of nucleic acids according to claim 10 , wherein said antibodies or functional fragments thereof comprise one or more complementarity determining regions comprising amino acid modifications that remove potential post translational modification sites.
21. The collection of nucleic acids according to claim 20 , wherein said antibodies or functional fragments thereof comprise one or more heavy chain complementarity determining regions comprising the complementarity determining region sequences from the respective variable heavy chains depicted in SEQ ID NOs: 266-278.
22. The collection of nucleic acids according to claim 21 , wherein said antibodies or functional fragments thereof comprise HCDR1 regions from the respective HCDR1 region depicted in SEQ ID NOs: 266-278.
23. The collection of nucleic acids according to claim 21 , wherein said antibodies or functional fragments thereof comprise HCDR2 regions from the respective HCDR2 region depicted in SEQ ID NOs: 266-278.
24. The collection of nucleic acids according to claim 10 , wherein said antibodies or functional fragments thereof comprise a FR4 region selected from the group consisting of JH4 (SEQ ID NO:293), Jκ1 (SEQ ID NO:297), and Jλ2/3 (SEQ ID NO:301).
25. The collection of nucleic acids according to claim 10 , wherein said antibodies or functional fragments thereof comprise a diversified HCDR3 region.
26. The collection of nucleic acids according to claim 10 , wherein said antibodies or functional fragments thereof comprise a diversified LCDR3 region.
27. The collection of nucleic acids according to claim 10 , wherein the collection comprises at least 1×10 4 antibodies or functional fragments thereof.
28. The collection of nucleic acids according to claim 10 , wherein said antibodies are selected from the groups consisting of human IgG1, IgG2, IgG3, IgG4, IgA, IgE, IgM and IgD.
29. The collection of nucleic acids according to claim 10 , wherein said functional fragments of said antibodies are selected from the group consisting of Fab, F(ab′)2, Fab′, Fv, and scFv.
30. A vector comprising the collection of nucleic acids according to claim 10 .
31. A recombinant host cell comprising the vector of claim 30 .
32. A method of producing a collection of nucleic acids encoding synthetic antibodies or functional fragments thereof, comprising
a) identifying the variable heavy chain and variable light chain germline gene pairs present in the human immune repertoire;
b) testing the variable heavy chain and variable light chain germline protein pairs identified in step a) for the following properties:
i) an expression yield in Fab format of at least 2.5 mg/L;
ii) thermal stability at 70° C. or above in Fab format;
iii) monomeric content (% monomer) in Fab format of at least 98% as determined by SEC;
iv) an expression yield in IgG1 format of at least 30 mg/L;
v) thermal stability at 73° C. or above in IgG1 format; and
vii) monomeric content (% monomer) in IgG1 format of at least 99% as determined by SEC; and
c) generating a collection, wherein the antibodies or functional fragments thereof comprise variable heavy chain and variable light chain pairs, wherein the framework regions of the variable heavy chain and variable light chain pairs comprise germline protein sequences of the germline protein pairs fulfilling the properties of step b), wherein the collection encodes the germline protein sequences according to claim 1 .