Methods and compositions for treating and preventing disease associated with alpha-V beta-8 integrin
Antibodies (e.g., isolated antibodies) that specifically bind to human integrin β8 and inhibit adhesion of latency associated peptide (LAP) to αvβ8 are provided. In some embodiments, the antibody cross-reacts with mouse integrin β8. In some embodiments, the antibody blocks TGFJ3 activation. In some embodiments, the antibody antagonizes binding of LAP to αβ8 with an IC50 below 5 nM.
1. An isolated antibody that specifically binds to human integrin β8 and inhibits adhesion of latency associated peptide (LAP) to αvβ8, wherein the antibody comprises:
a heavy chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (HCDR1, HCDR2, and HCDR3) of SEQ ID NO:1 and a light chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (LCDR1, LCDR2, and LCDR3) of SEQ ID NO:16; or
a heavy chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (HCDR1, HCDR2, and HCDR3) of SEQ ID NO:2 and a light chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (LCDR1, LCDR2, and LCDR3) of SEQ ID NO:16; or
a heavy chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (HCDR1, HCDR2, and HCDR3) of SEQ ID NO:3 and a light chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (LCDR1, LCDR2, and LCDR3) of SEQ ID NO:16; or
a heavy chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (HCDR1, HCDR2, and HCDR3) of SEQ ID NO:4 and a light chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (LCDR1, LCDR2, and LCDR3) of SEQ ID NO:16; or
a heavy chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (HCDR1, HCDR2, and HCDR3) of SEQ ID NO:5 and a light chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (LCDR1, LCDR2, and LCDR3) of SEQ ID NO:16; or
a heavy chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (HCDR1, HCDR2, and HCDR3) of SEQ ID NO:6 and a light chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (LCDR1, LCDR2, and LCDR3) of SEQ ID NO:16; or
a heavy chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (HCDR1, HCDR2, and HCDR3) of SEQ ID NO:7 and a light chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (LCDR1, LCDR2, and LCDR3) of SEQ ID NO:17; or
a heavy chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (HCDR1, HCDR2, and HCDR3) of SEQ ID NO:8 and a light chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (LCDR1, LCDR2, and LCDR3) of SEQ ID NO:18; or
a heavy chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (HCDR1, HCDR2, and HCDR3) of SEQ ID NO:9 and a light chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (LCDR1, LCDR2, and LCDR3) of SEQ ID NO:19; or
a heavy chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (HCDR1, HCDR2, and HCDR3) of SEQ ID NO:10 and a light chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (LCDR1, LCDR2, and LCDR3) of SEQ ID NO:20; or
a heavy chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (HCDR1, HCDR2, and HCDR3) of SEQ ID NO:11 and a light chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (LCDR1, LCDR2, and LCDR3) of SEQ ID NO:20; or
a heavy chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (HCDR1, HCDR2, and HCDR3) of SEQ ID NO:12 and a light chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (LCDR1, LCDR2, and LCDR3) of SEQ ID NO:20; or
a heavy chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (HCDR1, HCDR2, and HCDR3) of SEQ ID NO:13 and a light chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (LCDR1, LCDR2, and LCDR3) of SEQ ID NO:20; or
a heavy chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (HCDR1, HCDR2, and HCDR3) of SEQ ID NO:14 and a light chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (LCDR1, LCDR2, and LCDR3) of SEQ ID NO:21, or
a heavy chain variable region comprising the Kabat-determined or Chothia-determined complementarity determining regions (HCDR1, HCDR2, and HCDR3) of SEQ ID NO:15 and a light chain variable region comprising the complementarity determining regions (LCDR1, LCDR2, and LCDR3) of SEQ ID NO:22.
2. The antibody of claim 1 , wherein the antibody comprises one or more human framework regions.
3. A pharmaceutical composition comprising the antibody of claim 1 .
4. The isolated antibody of claim 1 , wherein
HCDR1 comprises SEQ ID NO:88, HCDR2 comprises SEQ ID NO:90, and HCDR3 comprises SEQ ID NO:25, and
LCDR1 comprises SEQ ID NO:46, LCDR2 comprises SEQ ID NO:47, and LCDR3 comprises SEQ ID NO:48.
5. The isolated antibody of claim 1 , wherein
HCDR1 comprises SEQ ID NO:89, HCDR2 comprises SEQ ID NO:24, and HCDR3 comprises SEQ ID NO:25, and
LCDR1 comprises SEQ ID NO:46, LCDR2 comprises SEQ ID NO:47, and LCDR3 comprises SEQ ID NO:48.
6. The isolated antibody of claim 1 , wherein
HCDR1 comprises SEQ ID NO:88, HCDR2 comprises SEQ ID NO:90, and HCDR3 comprises SEQ ID NO:25, and
LCDR1 comprises SEQ ID NO:46, LCDR2 comprises SEQ ID NO:47, and LCDR3 comprises SEQ ID NO:48.
7. The isolated antibody of claim 1 , wherein
HCDR1 comprises SEQ ID NO:89, HCDR2 comprises SEQ ID NO:26, and HCDR3 comprises SEQ ID NO:25, and
LCDR1 comprises SEQ ID NO:46, LCDR2 comprises SEQ ID NO:47, and LCDR3 comprises SEQ ID NO:48.
8. The isolated antibody of claim 1 , wherein
HCDR1 comprises SEQ ID NO:91, HCDR2 comprises SEQ ID NO:93, and HCDR3 comprises SEQ ID NO:29, and
LCDR1 comprises SEQ ID NO:46, LCDR2 comprises SEQ ID NO:49, and LCDR3 comprises SEQ ID NO:50.
9. The isolated antibody of claim 1 , wherein
HCDR1 comprises SEQ ID NO:92, HCDR2 comprises SEQ ID NO:28, and HCDR3 comprises SEQ ID NO:29, and
LCDR1 comprises SEQ ID NO:46, LCDR2 comprises SEQ ID NO:49, and LCDR3 comprises SEQ ID NO:50.
10. The isolated antibody of claim 1 , wherein
HCDR1 comprises SEQ ID NO:94, HCDR2 comprises SEQ ID NO:96, and HCDR3 comprises SEQ ID NO:32, and
LCDR1 comprises SEQ ID NO:51, LCDR2 comprises SEQ ID NO:52, and LCDR3 comprises SEQ ID NO:53.
11. The isolated antibody of claim 1 , wherein
HCDR1 comprises SEQ ID NO:95, HCDR2 comprises SEQ ID NO:31, and HCDR3 comprises SEQ ID NO:32, and
LCDR1 comprises SEQ ID NO:51, LCDR2 comprises SEQ ID NO:52, and LCDR3 comprises SEQ ID NO:53.
12. The isolated antibody of claim 1 , wherein
HCDR1 comprises SEQ ID NO:97, HCDR2 comprises SEQ ID NO:99, and HCDR3 comprises SEQ ID NO:35, and
LCDR1 comprises SEQ ID NO:54, LCDR2 comprises SEQ ID NO:55, and LCDR3 comprises SEQ ID NO:56.
13. The isolated antibody of claim 1 , wherein
HCDR1 comprises SEQ ID NO:98, HCDR2 comprises SEQ ID NO:34, and HCDR3 comprises SEQ ID NO:35, and
LCDR1 comprises SEQ ID NO:54, LCDR2 comprises SEQ ID NO:55, and LCDR3 comprises SEQ ID NO:56.
14. The isolated antibody of claim 1 , wherein
HCDR1 comprises SEQ ID NO:100, HCDR2 comprises SEQ ID NO:102, and HCDR3 comprises SEQ ID NO:38, and
LCDR1 comprises SEQ ID NO:57, LCDR2 comprises SEQ ID NO:58, and LCDR3 comprises SEQ ID NO:59.
15. The isolated antibody of claim 1 , wherein
HCDR1 comprises SEQ ID NO:101, HCDR2 comprises SEQ ID NO:37, and HCDR3 comprises SEQ ID NO:38, and
LCDR1 comprises SEQ ID NO:57, LCDR2 comprises SEQ ID NO:58, and LCDR3 comprises SEQ ID NO:59.
16. The isolated antibody of claim 1 , wherein
HCDR1 comprises SEQ ID NO:101, HCDR2 comprises SEQ ID NO:39, and HCDR3 comprises SEQ ID NO:38, and
LCDR1 comprises SEQ ID NO:57, LCDR2 comprises SEQ ID NO:58, and LCDR3 comprises SEQ ID NO:59.
17. The isolated antibody of claim 1 , wherein
HCDR1 comprises SEQ ID NO:103, HCDR2 comprises SEQ ID NO:105, and HCDR3 comprises SEQ ID NO:42, and
LCDR1 comprises SEQ ID NO:60, LCDR2 comprises SEQ ID NO:61, and LCDR3 comprises SEQ ID NO:62.
18. The isolated antibody of claim 1 , wherein
HCDR1 comprises SEQ ID NO:104, HCDR2 comprises SEQ ID NO:41, and HCDR3 comprises SEQ ID NO:42, and
LCDR1 comprises SEQ ID NO:60, LCDR2 comprises SEQ ID NO:61, and LCDR3 comprises SEQ ID NO:62.
19. The isolated antibody of claim 1 , wherein
HCDR1 comprises SEQ ID NO:106, HCDR2 comprises SEQ ID NO:108, and HCDR3 comprises SEQ ID NO:45, and
LCDR1 comprises SEQ ID NO:63, LCDR2 comprises SEQ ID NO:64, and LCDR3 comprises SEQ ID NO:65.
20. The isolated antibody of claim 1 , wherein
HCDR1 comprises SEQ ID NO:107, HCDR2 comprises SEQ ID NO:44, and HCDR3 comprises SEQ ID NO:45, and
LCDR1 comprises SEQ ID NO:63, LCDR2 comprises SEQ ID NO:64, and LCDR3 comprises SEQ ID NO:65.