ANTIBODIES TARGETING CD32b AND METHODS OF USE THEREOF
First Claim
Patent Images
1. An isolated antibody or antigen-binding fragment thereof, which comprises:
- (a) A heavy chain variable region CDR1 comprising an amino acid sequence selected from any one of SEQ ID NOs;
1, 4, 7, 53, 56, 59, 105, 108, 111, 157, 160, 163, 209, 212, 215, 261, 264, 267, 313, 316, 319, 365, 368, 371, 417, 420, 423, 469, 472, 475, 521, 524, 527, 547, 550, 553, 573, 576, 579, 625, 628, and 631;
(b) a heavy chain variable region CDR2 comprising an amino acid sequence selected from any of SEQ ID NOs;
2, 5, 8, 54, 57, 60, 106, 109, 112, 158, 161, 164, 210, 213, 216, 262, 265, 268, 314, 317, 320, 366, 369, 372, 418, 421;
424, 470, 473, 476, 522, 525, 528, 548, 551, 554, 574, 577, 580, 626, 629, and 632;
(c) a heavy chain variable region CDR3 comprising an amino acid sequence selected from any of SEQ ID NOs;
3, 6, 9, 55, 58, 61, 107, 110, 113, 159, 162, 165, 211, 214, 217, 263, 266, 269, 315, 318, 321, 367, 370, 373, 419, 422, 425, 471, 474, 477, 523, 526, 529, 549, 552, 555, 575, 578, 581, 627, 630, and 633;
(d) a light chain variable region CDR1 comprising an amino acid sequence selected from any of SEQ ID NOs;
14, 17, 20, 66, 69, 72, 118, 121, 124, 170, 173, 176, 222, 225, 228, 274, 277, 280, 326, 329, 332, 378, 381, 384, 430, 433, 436, 482, 485, 488, 534, 537, 540, 560, 563, 566, 586, 589, 592, 638, 641, 644;
(e) a light chain variable region CDR2 comprising an amino acid sequence selected from any of SEQ ID NOs;
15, 18, 21, 67, 70, 73, 119, 122, 125, 171, 174, 177, 223, 226, 229, 275, 278, 281, 327, 330, 333, 379, 382, 385, 431, 434, 437, 483, 486, 489, 535, 538, 541, 561, 564, 567, 587, 590, 593, 639, 642, and 645; and
(f) a light chain variable region CDR3 comprising an amino acid sequence selected from any of SEQ ID NOs;
16, 19, 22, 68, 71, 74, 120, 123, 126, 172, 175, 178, 224, 227, 230, 276, 279, 282, 328, 331, 334, 380, 383, 386, 432, 435, 438, 484, 487, 490, 536, 539, 542, 562, 565, 568, 588, 591, 594, 640, 643, and 646;
wherein the antibody selectively binds human CD32b.
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Abstract
The present invention relates to isolated antibodies and antigen-binding fragments thereof which selectively bind human CD32b. Also provided herein are compositions comprising the antibodies or antigen-binding fragments thereof, methods of using the antibodies or antigen-binding fragments thereof, and methods of making the antibodies or antigen-binding fragments thereof.
9 Citations
68 Claims
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1. An isolated antibody or antigen-binding fragment thereof, which comprises:
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(a) A heavy chain variable region CDR1 comprising an amino acid sequence selected from any one of SEQ ID NOs;
1, 4, 7, 53, 56, 59, 105, 108, 111, 157, 160, 163, 209, 212, 215, 261, 264, 267, 313, 316, 319, 365, 368, 371, 417, 420, 423, 469, 472, 475, 521, 524, 527, 547, 550, 553, 573, 576, 579, 625, 628, and 631;(b) a heavy chain variable region CDR2 comprising an amino acid sequence selected from any of SEQ ID NOs;
2, 5, 8, 54, 57, 60, 106, 109, 112, 158, 161, 164, 210, 213, 216, 262, 265, 268, 314, 317, 320, 366, 369, 372, 418, 421;
424, 470, 473, 476, 522, 525, 528, 548, 551, 554, 574, 577, 580, 626, 629, and 632;(c) a heavy chain variable region CDR3 comprising an amino acid sequence selected from any of SEQ ID NOs;
3, 6, 9, 55, 58, 61, 107, 110, 113, 159, 162, 165, 211, 214, 217, 263, 266, 269, 315, 318, 321, 367, 370, 373, 419, 422, 425, 471, 474, 477, 523, 526, 529, 549, 552, 555, 575, 578, 581, 627, 630, and 633;(d) a light chain variable region CDR1 comprising an amino acid sequence selected from any of SEQ ID NOs;
14, 17, 20, 66, 69, 72, 118, 121, 124, 170, 173, 176, 222, 225, 228, 274, 277, 280, 326, 329, 332, 378, 381, 384, 430, 433, 436, 482, 485, 488, 534, 537, 540, 560, 563, 566, 586, 589, 592, 638, 641, 644;(e) a light chain variable region CDR2 comprising an amino acid sequence selected from any of SEQ ID NOs;
15, 18, 21, 67, 70, 73, 119, 122, 125, 171, 174, 177, 223, 226, 229, 275, 278, 281, 327, 330, 333, 379, 382, 385, 431, 434, 437, 483, 486, 489, 535, 538, 541, 561, 564, 567, 587, 590, 593, 639, 642, and 645; and(f) a light chain variable region CDR3 comprising an amino acid sequence selected from any of SEQ ID NOs;
16, 19, 22, 68, 71, 74, 120, 123, 126, 172, 175, 178, 224, 227, 230, 276, 279, 282, 328, 331, 334, 380, 383, 386, 432, 435, 438, 484, 487, 490, 536, 539, 542, 562, 565, 568, 588, 591, 594, 640, 643, and 646;wherein the antibody selectively binds human CD32b. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 42, 46, 47, 48, 49, 50, 52, 61)
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16. An isolated antibody or antigen-binding fragment thereof, wherein the antibody or antigen-binding fragment thereof comprises a heavy chain variable region comprising an amino acid sequence that is at least 90% identical to the amino acid sequence selected from the group consisting of SEQ ID NOs:
- 10, 62, 114, 166, 218, 270, 322, 374, 426, 478, 530, 556, 582, and 634; and
a light chain variable region comprising an amino acid sequence that is at least 90% identical to the amino acid sequence selected from the group consisting of SEQ ID NOs;
23, 75, 127, 179, 231, 283, 335, 387, 439, 491, 543, 569, 595, and 647;
wherein the antibody specifically binds to human CD32b protein. - View Dependent Claims (17)
- 10, 62, 114, 166, 218, 270, 322, 374, 426, 478, 530, 556, 582, and 634; and
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41. (canceled)
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43. (canceled)
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44. (canceled)
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45. (canceled)
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51. (canceled)
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53. (canceled)
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54. (canceled)
- 55. An isolated antibody or antigen binding fragment thereof that specifically binds to CD32b within the Fc binding domain of CD32b.
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62. An isolated antibody or antigen binding fragment thereof that specifically binds to CD32b and inhibits or reduces CD32b immunoreceptor tyrosine-based inhibition motif (ITIM) signaling mediated by a second antibody that binds to a tumor antigen co-expressed with CD32b on a B-cell.
- 63. A method of inhibiting or reducing CD32b ITIM signaling that is induced by administration of a therapeutic antibody that binds to a tumor antigen co-expressed with CD32b on a B-cell comprising administering an isolated antibody or antigen binding fragment thereof that specifically binds to the Fc binding domain of CD32b.
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68. (canceled)
Specification