| 主权项 |
1. An antibody capable of specifically binding to human metapneumovirus F protein and neutralizing its biological activity, or an antigen-binding fragment thereof, comprising a heavy chain variable region and a light chain variable region wherein
(i) the heavy chain variable region comprises: (a) the amino acid sequence of heavy chain CDR1 selected from the group consisting of the amino acid sequences of SEQ ID NOs: 3, 13, 23, 33, 43, 53, 63, 73, 83, 93, 103, 113, and 123 and amino acid sequences derived from any of these amino acid sequences by the deletion, substitution, insertion, and/or addition mutations of one to several amino acid residues, (b) the amino acid sequence of heavy chain CDR2 selected from the group consisting of the amino acid sequences of SEQ ID NOs: 4, 14, 24, 34, 44, 54, 64, 74, 84, 94, 104, 114, and 124 and amino acid sequences derived from any of these amino acid sequences by the deletion, substitution, insertion, and/or addition mutations of one to several amino acid residues, and (c) the amino acid sequence of heavy chain CDR3 selected from the group consisting of the amino acid sequences of SEQ ID NOs: 5, 15, 25, 35, 45, 55, 65, 75, 85, 95, 105, 115, and 125 and amino acid sequences derived from any of these amino acid sequences by the deletion, substitution, insertion, and/or addition mutations of one to several amino acid residues, and (ii) the light chain variable region comprises: (a) the amino acid sequence of light chain CDR1 selected from the group consisting of the amino acid sequences of SEQ ID NOs: 8, 18, 28, 38, 48, 58, 68, 78, 88, 98, 108, 118, and 128 and amino acid sequences derived from any of these amino acid sequences by the deletion, substitution, insertion, and/or addition mutations of one to several amino acid residues, (b) the amino acid sequence of light chain CDR2 selected from the group consisting of the amino acid sequences of SEQ ID NOs: 9, 19, 29, 39, 49, 59, 69, 79, 89, 99, 109, 119, and 129 and amino acid sequences derived from any of these amino acid sequences by the deletion, substitution, insertion, and/or addition mutations of one to several amino acid residues, and (c) the amino acid sequence of light chain CDR3 selected from the group consisting of the amino acid sequences of SEQ ID NOs: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, and 130 and amino acid sequences derived from any of these amino acid sequences by the deletion, substitution, insertion, and/or addition mutations of one to several amino acid residues. |
