Antibody


Last updated: 2021 Nov 2
Total hit(s): 17
Select item(s)
Key Findings
Comments
(You can add your comments too!)
Original Article
(hover to see details)
Neutralising activity of REGN-COV2 therapeutic monoclonal antibodies was studied. REGN10987 retained the majority of its neutralising action against the variant spike proteins, but REGN10933 lost the majority of its activity against the B.1.351, B.1.1.248, and mink cluster 5 variant spike proteins. E406W mutation was seen to allow escape from both antibodies, but is not located in either of the epitopes bound by the antibodies.
34060334
(mBio)
PMID
34060334
Date of Publishing: 2021 Jun 1
Title Convalescent-Phase Sera and Vaccine-Elicited Antibodies Largely Maintain Neutralizing Titer against Global SARS-CoV-2 Variant Spikes
Author(s) nameTada T, Dcosta BM et al.
Journal mBio
Impact factor
6.5
Citation count: 1
Date of Entry 2021 Nov 2


Amongst the 20 monoclonal antibodies tested against the beta variant, 14 showed >10-fold decrease in the neutralisation titers.
33730597
(Cell)
PMID
33730597
Date of Publishing: 2021 Apr 29
Title Evidence of escape of SARS-CoV-2 variant B.1.351 from natural and vaccine-induced sera
Author(s) nameZhou D, Dejnirattisai W et al.
Journal Cell
Impact factor
27.35
Citation count: 36
Date of Entry 2021 Nov 2


B.1.526 variant is associated with lowered antibody neutralisation which is already in clinical use, thereby raising concerns against the risk of re-infection and efficacy of antibody therapy. The S477N mutation did not have any antigenic impact, as the NY5(S477N) pseudoviruses did not show any neutralizing activity against 12 monoclonal antibodies covering all epitopes on RBD.
Pre-print (medRXiv)
Date of Publishing 2021 Apr 15
Title A Novel and Expanding SARS-CoV-2 Variant, B.1.526, Identified in New York
Impact factor
N/A
Date of Entry 2021 Nov 2


The N501Y mutation in the Alpha variant helps in escaping from some neutralising antibodies like RBD-chAB25. However, antibodies RBD-chAb15 and 45 remained highly effective as ACE2 binding inhibitors
Pre-print ( bioRXiv )
Date of Publishing 2021 May 12
Title Impacts on the structure-function relationship of SARS-CoV-2 spike by B.1.1.7 mutations
Impact factor
N/A
Date of Entry 2021 Sep 30


Potential amino acid change which results in escape mutants in SARS-CoV were recreated by a mutation in the SARS-CoV-2 Spike. The 12 pseudotypes were screened against a panel of monoclonal antibodies (mAbs). Pseudotype virus encoding the KVG444-6TST, a multiple substitution shows reduced neutralization potency (3.7-fold) for mAb COVA2-29, a cluster I RBD-specific antibody. The mAbs were mapped into clusters based on their competency to bind to the spike target site. Eight clusters comprised of neutralizing mAbs (I, III, IV, VI, VII, IX, X, XI), five of which target the RBD (I, III, VI, VII, IX), and three clusters contain only non-neutralizing mAbs (II, V and VIII).
33713594
(Cell Rep)
PMID
33713594
Date of Publishing: 2021 Mar 23
Title The effect of spike mutations on SARS-CoV-2 neutralization
Author(s) nameRees-Spear C, Muir L et al.
Journal Cell Rep
Impact factor
7.7
Citation count: 10
Date of Entry 2021 Aug 6


The neutralising potency of a panel of monoclonal antibodies (mAbs) were assessed against the SARS-CoV-2 Alpha variant (B.1.1.7) pseudovirus. This variant lowered the potency of three mAbs- COVA2-17, COVA1-12 and COVA1-21. These mAbs belonged to distinct clusters and do not compete for binding to the same epitope.
33713594
(Cell Rep)
PMID
33713594
Date of Publishing: 2021 Mar 23
Title The effect of spike mutations on SARS-CoV-2 neutralization
Author(s) nameRees-Spear C, Muir L et al.
Journal Cell Rep
Impact factor
7.7
Citation count: 10
Date of Entry 2021 Aug 6


Potential amino acid change which results in escape mutants in SARS-CoV were recreated by a mutation in the SARS-CoV-2 Spike. The 12 pseudotypes were screened against a panel of monoclonal antibodies (mAbs). Pseudotype virus encoding the S494D showed absolutely no neutralization activity by both COVA2-29 (cluster I) and COVA1-12 (cluster VI) mAbs. However, it does not have a radical effect on the other cluster I mAbs tested or those from other epitope clusters. The mAbs were mapped into clusters based on their competency to bind to the spike target site. Eight clusters comprised of neutralizing mAbs (I, III, IV, VI, VII, IX, X, XI), five of which target the RBD (I, III, VI, VII, IX), and three clusters contain only non-neutralizing mAbs (II, V and VIII).
33713594
(Cell Rep)
PMID
33713594
Date of Publishing: 2021 Mar 23
Title The effect of spike mutations on SARS-CoV-2 neutralization
Author(s) nameRees-Spear C, Muir L et al.
Journal Cell Rep
Impact factor
7.7
Citation count: 10
Date of Entry 2021 Aug 6


Potential amino acid change which results in escape mutants in SARS-CoV were recreated by a mutation in the SARS-CoV-2 Spike. The 12 pseudotypes were screened against a panel of monoclonal antibodies (mAbs). Pseudotype virus expressing the LF455YL showed reduced neutralization activity to a wide range of RBD-specific mAbs from different clusters- COVA2-29 (cluster I), COVA2-07 (cluster III) and COVA1-12 (cluster VI). The mAbs were mapped into clusters based on their competency to bind to the spike target site. Eight clusters comprised of neutralizing mAbs (I, III, IV, VI, VII, IX, X, XI), five of which target the RBD (I, III, VI, VII, IX), and three clusters contain only non-neutralizing mAbs (II, V and VIII).
33713594
(Cell Rep)
PMID
33713594
Date of Publishing: 2021 Mar 23
Title The effect of spike mutations on SARS-CoV-2 neutralization
Author(s) nameRees-Spear C, Muir L et al.
Journal Cell Rep
Impact factor
7.7
Citation count: 10
Date of Entry 2021 Aug 6


Potential amino acid change which results in escape mutants in SARS-CoV were recreated by a mutation in the SARS-CoV-2 Spike. The 12 pseudotypes were screened against a panel of monoclonal antibodies (mAbs). Pseudotype virus with L452K showed no neutralization activity to the cluster I mAb COVA2-29. However, it does not affect the other cluster I mAb COVA1-18 or any other mAb tested. The mAbs were mapped into clusters based on their competency to bind to the spike target site. Eight clusters comprised of neutralizing mAbs (I, III, IV, VI, VII, IX, X, XI), five of which target the RBD (I, III, VI, VII, IX), and three clusters contain only non-neutralizing mAbs (II, V and VIII).
33713594
(Cell Rep)
PMID
33713594
Date of Publishing: 2021 Mar 23
Title The effect of spike mutations on SARS-CoV-2 neutralization
Author(s) nameRees-Spear C, Muir L et al.
Journal Cell Rep
Impact factor
7.7
Citation count: 10
Date of Entry 2021 Aug 6


Potential amino acid change which results in escape mutants in SARS-CoV were recreated by a mutation in the SARS-CoV-2 Spike. The 12 pseudotypes were screened against a panel of monoclonal antibodies (mAbs). Pseudotype virus encoding the K417V substitution mutation showed reduced neutralising potency to the cluster III RBD-specific mAb COVA2-07. K417V pseudotype was not neutralized by mAb COVA2-04, from the same competitive binding cluster as COVA2-07. The mAbs were mapped into clusters based on their competency to bind to the spike target site. Eight clusters comprised of neutralizing mAbs (I, III, IV, VI, VII, IX, X, XI), five of which target the RBD (I, III, VI, VII, IX), and three clusters contain only non-neutralizing mAbs (II, V and VIII).
33713594
(Cell Rep)
PMID
33713594
Date of Publishing: 2021 Mar 23
Title The effect of spike mutations on SARS-CoV-2 neutralization
Author(s) nameRees-Spear C, Muir L et al.
Journal Cell Rep
Impact factor
7.7
Citation count: 10
Date of Entry 2021 Aug 6


Potential amino acid change which results in escape mutants in SARS-CoV were recreated by a mutation in the SARS-CoV-2 Spike. The 12 pseudotypes were screened against a panel of monoclonal antibodies (mAbs). A complete loss of neutralising activity of the cluster III RBD-specific mAb COVA1-16 was observed with the pseudotyped virus with P384A substitution The mAbs were mapped into clusters based on their competency to bind to the spike target site. Eight clusters comprised of neutralizing mAbs (I, III, IV, VI, VII, IX, X, XI), five of which target the RBD (I, III, VI, VII, IX), and three clusters contain only non-neutralizing mAbs (II, V and VIII).
33713594
(Cell Rep)
PMID
33713594
Date of Publishing: 2021 Mar 23
Title The effect of spike mutations on SARS-CoV-2 neutralization
Author(s) nameRees-Spear C, Muir L et al.
Journal Cell Rep
Impact factor
7.7
Citation count: 10
Date of Entry 2021 Aug 6


Potential amino acid change which results in escape mutants in SARS-CoV were recreated by a mutation in the SARS-CoV-2 Spike. The 12 pseudotypes were screened against a panel of monoclonal antibodies (mAbs). Three pseudotypes encoding RFA346-8KFP, S459G, and ST477-8GK showed no major effect on neutralization by the panel of mAbs. Nine pseudotype virus showed diminished neutralisation for at least one mAb. The mAbs were mapped into clusters based on their competency to bind to the spike target site. Eight clusters comprised of neutralizing mAbs (I, III, IV, VI, VII, IX, X, XI), five of which target the RBD (I, III, VI, VII, IX), and three clusters contain only non-neutralizing mAbs (II, V and VIII).
33713594
(Cell Rep)
PMID
33713594
Date of Publishing: 2021 Mar 23
Title The effect of spike mutations on SARS-CoV-2 neutralization
Author(s) nameRees-Spear C, Muir L et al.
Journal Cell Rep
Impact factor
7.7
Citation count: 10
Date of Entry 2021 Aug 6


A222V mutation in the spike neither enhance any of the antigenic properties of the 20E (EU1) variant nor showed any substantial effect on the neutralization of the N-terminal domain (NTD)-specific 4A8 antibody.
Pre-print ( medRXiv )
Date of Publishing 2021 Mar 24
Title Emergence and spread of a SARS-CoV-2 variant through Europe in the summer of 2020
Impact factor
N/A
Date of Entry 2021 Jul 2


The A222V substitution in the spike protein of the 20E (EU1) variant did not affect its antigenicity, conformation, or stability. The receptor binding domain (RBD)-specific antibodies like S309 neutralized the A222V bearing spike variant in similar capacity to that of the wild type spike protein..
Pre-print ( medRXiv )
Date of Publishing 2021 Mar 24
Title Emergence and spread of a SARS-CoV-2 variant through Europe in the summer of 2020
Impact factor
N/A
Date of Entry 2021 Jul 2


The A222V substitution in the spike protein of the 20E (EU1) variant did not affect its antigenicity, conformation, or stability. The receptor binding domain (RBD)-specific antibodies like S2E12 neutralized the A222V bearing spike variant in similar capacity to that of the wild type spike protein.. S2E12 and S309 antibodies were serially diluted in a 1:3 ratio with Tris buffered saline with Tween (TBST- 1000nM).
Pre-print ( medRXiv )
Date of Publishing 2021 Mar 24
Title Emergence and spread of a SARS-CoV-2 variant through Europe in the summer of 2020
Impact factor
N/A
Date of Entry 2021 Jul 2


Cocktails of antibodies targeting distinct non-overlapping regions of Receptor binding domains (RBD) significantly reduces escape mutations as compared to both single antibody treatment as well as treatment with a combination of antibodies targeting overlapping regions of RBD. Further in vivo animal and human studies are required to understand emergence of escape mutants that lead to reduction/loss of drug efficacy
32540904
(Science)
PMID
32540904
Date of Publishing: 2020 Aug 21
Title Antibody cocktail to SARS-CoV-2 spike protein prevents rapid mutational escape seen with individual antibodies
Author(s) nameBaum A, Fulton BO et al.
Journal Science
Impact factor
20.57
Citation count: 110
Date of Entry 2021 Jul 2


LY-CoV1404 antibody has potent neutralising activity against a number of SAR-CoV2 variants. The antibody binds to these varaints despite their underlying Receptor binding domain (RBD) mutations like K417N, L452R, E484K and N501Y.
Pre-print ( bioRXiv )
Title LY-CoV1404 potently neutralizes SARS-CoV-2 variants
Impact factor
N/A
Date of Entry 2021 Jul 2