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mAbs, volume 12, issue 1

Potent neutralization of SARS-CoV-2 by human antibody heavy-chain variable domains isolated from a large library with a new stable scaffold

Zehua Sun 1
Chuan Chen 1
Wei Li 1
Wei Li 1
David R. Martinez 2
Aleksandra Drelich 3
Aleksandra K Drelich 3
Du-San Baek 1
Xianglei Liu 1
John W. Mellors 1, 4
Chien-Te Tseng 3
Chien-Hao Tseng 3
Ralph Baric 2
Ralph S Baric 2
Dimiter S. Dimitrov 1, 4
1
 
Center for Antibody Therapeutics, Division of Infectious Diseases, Department of Medicine, University of Pittsburgh Medical School, Pittsburgh, PA, USA
2
 
Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
3
 
Department of Microbiology & Immunology, Centers for Biodefense and Emerging Diseases, Galveston National Laboratory, Galveston, TX, USA
4
 
Abound Bio, Pittsburgh, PA, USA
Publication typeJournal Article
Publication date2020-01-01
Journal: mAbs
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor5.3
ISSN19420862, 19420870
Immunology
Immunology and Allergy
Abstract
Effective therapies are urgently needed for COVID-19. Here we describe the identification of a new stable human immunoglobulin G1 heavy-chain variable (VH) domain scaffold that was used for the construction of a large library, lCAT6, of engineered human VHs. This library was panned against the receptor-binding domain (RBD) of the SARS-CoV-2 spike (S) glycoprotein. Two VH domains (VH ab6 and VH m397) were selected and fused to Fc for increased half-life in circulation. The VH-Fc ab6 and m397 specifically neutralized SARS-CoV-2 with high potencies (50% neutralization at 0.35 µg/ml and 1.5 µg/ml, respectively) as measured by two independent replication-competent virus neutralization assays. Ab6 and m397 competed with ACE2 for binding to RBD, suggesting a competitive mechanism of virus neutralization. These VH domains may have potential applications for prophylaxis and therapy of COVID-19 alone or in combination, as well as for diagnosis and as tools for research.

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GOST Copy
Sun Z. et al. Potent neutralization of SARS-CoV-2 by human antibody heavy-chain variable domains isolated from a large library with a new stable scaffold // mAbs. 2020. Vol. 12. No. 1.
GOST all authors (up to 50) Copy
Sun Z., Chen C., Li W., Li W., Martinez D. R., Martinez D. G., Drelich A., Drelich A. K., Baek D., Liu X., Mellors J. W., Tseng C., Tseng C., Baric R. S., Baric R., Dimitrov D. S. Potent neutralization of SARS-CoV-2 by human antibody heavy-chain variable domains isolated from a large library with a new stable scaffold // mAbs. 2020. Vol. 12. No. 1.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1080/19420862.2020.1778435
UR - https://doi.org/10.1080/19420862.2020.1778435
TI - Potent neutralization of SARS-CoV-2 by human antibody heavy-chain variable domains isolated from a large library with a new stable scaffold
T2 - mAbs
AU - Sun, Zehua
AU - Li, Wei
AU - Martinez, David R.
AU - Drelich, Aleksandra
AU - Baek, Du-San
AU - Liu, Xianglei
AU - Mellors, John W.
AU - Tseng, Chien-Te
AU - Baric, Ralph S
AU - Dimitrov, Dimiter S.
AU - Chen, Chuan
AU - Li, Wei
AU - Martinez, David G.
AU - Drelich, Aleksandra K
AU - Tseng, Chien-Hao
AU - Baric, Ralph
PY - 2020
DA - 2020/01/01 00:00:00
PB - Taylor & Francis
IS - 1
VL - 12
SN - 1942-0862
SN - 1942-0870
ER -
BibTex
Cite this
BibTex Copy
@article{2020_Sun,
author = {Zehua Sun and Wei Li and David R. Martinez and Aleksandra Drelich and Du-San Baek and Xianglei Liu and John W. Mellors and Chien-Te Tseng and Ralph S Baric and Dimiter S. Dimitrov and Chuan Chen and Wei Li and David G. Martinez and Aleksandra K Drelich and Chien-Hao Tseng and Ralph Baric},
title = {Potent neutralization of SARS-CoV-2 by human antibody heavy-chain variable domains isolated from a large library with a new stable scaffold},
journal = {mAbs},
year = {2020},
volume = {12},
publisher = {Taylor & Francis},
month = {jan},
url = {https://doi.org/10.1080/19420862.2020.1778435},
number = {1},
doi = {10.1080/19420862.2020.1778435}
}
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