Back to results
US 8,273,354 B2Granted
Anti-RSV G protein antibodies
AssigneeTrellis RSV Holdings, Inc.
InventorsLawrence M. Kauvar, Ellen J. Collarini, Bruce Keyt, Orit Foord
Life of this patent
Estimating the term…
Abstract
Individual monoclonal antibodies and fragments that bind a conserved epitope of the G protein of RSV and which are minimally immunogenic when administered to a human subject, are useful in treating RSV infections.
Claims22
An isolated monoclonal antibody (mAb) or immunoreactive fragment thereof that:
- (a) binds an epitope within residues 160-176 of the G protein of respiratory syncytial virus (RSV) strain A2,
- (b) is a human antibody or fragment,
- (c) has reactivity with both Ga and Gb,
- (d) has an EC50 of less than 500 ng/ml in a plaque reduction neutralization test (PRNT), and
- (e) has an affinity measured as the ratio of on/off rates for G-protein of RSV A2 of less than 1 nM.
2 more elements
An isolated mAb or immunoreactive fragment thereof wherein
- the heavy chain has a CDR1 region consisting of SSNYYWG (positions 31-37 of SEQ ID NO:29), a CDR2 region consisting of SIHDSGSIYYNPSLRS (positions 52-67 of SEQ ID NO:29), and a CDR3 region consisting of HLVWFGELRNNWFDP (positions 100-114 of SEQ ID NO:29) and the light chain has a CDR1 region consisting of RASQSVNSNLA (positions 24-34 of SEQ ID NO:43), a CDR2 region consisting of GASTRAT (positions 50-56 of SEQ ID NO:43), and a CDR3 region consisting of QQYNNWPL (positions 89-96 of SEQ ID NO:43) (3G12), or
- the heavy chain has a CDR1 region consisting of EHAMH (positions 31-35 of SEQ ID NO:31), a CDR2 region consisting of GISWNSGSVGYADSVKG (positions 50-66 of SEQ ID NO:31), and a CDR3 region consisting of MVATTKNDFHYYKDV (positions 99-113 of SEQ ID NO:31) and the light chain has a CDR1 region consisting of KASQSVSNHLA (positions 24-34 of SEQ ID NO:45), a CDR2 region consisting of ETSNRAT (positions 50-56 of SEQ ID NO:45), and a CDR3 region consisting of QQRNNWYT (positions 89-96 of SEQ ID NO:45) (3D3), or
- the heavy chain has a CDR1 region consisting of TYPIS (positions 31-35 of SEQ ID NO:33), a CDR2 region consisting of RIIPDPPMANIAQKFQG (positions 50-66 of SEQ ID NO:33), and a CDR3 region consisting of EILQSPPFAVDV (positions 99-110 of SEQ ID NO:33) and the light chain has a CDR1 region consisting of TGSSSDVGGYSHVS (positions 23-36 of SEQ ID NO:47), a CDR2 region consisting of EVSNRPS (positions 52-58 of SEQ ID NO:47), and a CDR3 region consisting of GSYASTNILH (positions 91-100 of SEQ ID NO:47) (2B11), or
- the heavy chain has a CDR1 region consisting of TYYIH (positions 31-35 of SEQ ID NO:37), a CDR2 region consisting of VINPSGGSTTYAQKFQD (positions 50-66 of SEQ ID NO:37), and a CDR3 region consisting of VHKGRAEQWQLLHGHFDL (positions 99-116 of SEQ ID NO:37) and the light chain has a CDR1 region consisting of KSSQSVLYSSNNKTYLA (positions 24-40 of SEQ ID NO:51), a CDR2 region consisting of WASTRES (positions 56-62 of SEQ ID NO:51), and a CDR3 region consisting of QQYYTTP (positions 95-101 of SEQ ID NO:51) (1D4), or
- the heavy chain has a CDR1 region consisting of SGQYYWA (positions 31-37 of SEQ ID NO:38), a CDR2 region consisting of SIHYSGSTYQNPSLKS (positions 52-67 of SEQ ID NO:38), and a CDR3 consisting of region QQLSLSPVENWFDP (positions 100-113 of SEQ ID NO:38) and the light chain has a CDR1 region consisting of RASRSVGSRLA (positions 24-34 of SEQ ID NO:52), a CDR2 region consisting of AASTRAT (positions 50-56 of SEQ ID NO:52), and a CDR3 region consisting of QQYKEWPL (positions 89-96 of SEQ ID NO:52) (IG8), or
- the heavy chain has a CDR1 region consisting of GYAMH (positions 31-35 of SEQ ID NO:40), a CDR2 region consisting of VISFDGSNNYYADSVKG (positions 50-66 of SEQ ID NO:40), and a CDR3 region consisting of PDVIAVAGTALSNPFDL (positions 99-115 of SEQ ID NO:40) and the light chain has a CDR1 region consisting of RASQSVRSNLV (positions 23-33 of SEQ ID NO:54), a CDR2 region consisting of GASTRAT (positions 49-55 of SEQ ID NO:54), and a CDR3 region consisting of QQNNNWPP (positions 87-95 of SEQ ID NO:54) (1006).
3 more elements
Dependencies are inferred from the claim text.