Effective Prophylaxis of COVID-19 in Rhesus Macaques Using a Combination of Two Parenterally-Administered SARS-CoV-2 Neutralizing Antibodies

SARS-CoV-2 is a respiratory borne pathogenic beta coronavirus that is the source of a worldwide pandemic and the cause of multiple pathologies in man. The rhesus macaque model of COVID-19 was utilized to test the added benefit of combinatory parenteral administration of two high-affinity anti-SARS-C...

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Autores principales: Brandon J. Beddingfield, Nicholas J. Maness, Alyssa C. Fears, Jay Rappaport, Pyone Pyone Aye, Kasi Russell-Lodrigue, Lara A. Doyle-Meyers, Robert V. Blair, Ann M. Carias, Patrick J. Madden, Ramon Lorenzo Redondo, Hongmei Gao, David Montefiori, Thomas J. Hope, Chad J. Roy
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Publicado: Frontiers Media S.A. 2021
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Acceso en línea:https://doaj.org/article/9bf5b7e52088482b9bde993ef28f1d7d
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spelling oai:doaj.org-article:9bf5b7e52088482b9bde993ef28f1d7d2021-11-18T09:56:06ZEffective Prophylaxis of COVID-19 in Rhesus Macaques Using a Combination of Two Parenterally-Administered SARS-CoV-2 Neutralizing Antibodies2235-298810.3389/fcimb.2021.753444https://doaj.org/article/9bf5b7e52088482b9bde993ef28f1d7d2021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fcimb.2021.753444/fullhttps://doaj.org/toc/2235-2988SARS-CoV-2 is a respiratory borne pathogenic beta coronavirus that is the source of a worldwide pandemic and the cause of multiple pathologies in man. The rhesus macaque model of COVID-19 was utilized to test the added benefit of combinatory parenteral administration of two high-affinity anti-SARS-CoV-2 monoclonal antibodies (mAbs; C144-LS and C135-LS) expressly developed to neutralize the virus and modified to extend their pharmacokinetics. After completion of kinetics study of mAbs in the primate, combination treatment was administered prophylactically to mucosal viral challenge. Results showed near complete virus neutralization evidenced by no measurable titer in mucosal tissue swabs, muting of cytokine/chemokine response, and lack of any discernable pathologic sequalae. Blocking infection was a dose-related effect, cohorts receiving lower doses (6, 2 mg/kg) resulted in low grade viral infection in various mucosal sites compared to that of a fully protective dose (20 mg/kg). A subset of animals within this cohort whose infectious challenge was delayed 75 days later after mAb administration were still protected from disease. Results indicate this combination mAb effectively blocks development of COVID-19 in the rhesus disease model and accelerates the prospect of clinical studies with this effective antibody combination.Brandon J. BeddingfieldNicholas J. ManessNicholas J. ManessAlyssa C. FearsJay RappaportJay RappaportPyone Pyone AyeKasi Russell-LodrigueLara A. Doyle-MeyersRobert V. BlairAnn M. CariasPatrick J. MaddenRamon Lorenzo RedondoHongmei GaoDavid MontefioriDavid MontefioriThomas J. HopeChad J. RoyChad J. RoyFrontiers Media S.A.articleSARS-CoV-2SARS-CoV-2 antibodiesnonhuman primatesimmunoprophylaxispharmacokineticsMicrobiologyQR1-502ENFrontiers in Cellular and Infection Microbiology, Vol 11 (2021)
institution DOAJ
collection DOAJ
language EN
topic SARS-CoV-2
SARS-CoV-2 antibodies
nonhuman primates
immunoprophylaxis
pharmacokinetics
Microbiology
QR1-502
spellingShingle SARS-CoV-2
SARS-CoV-2 antibodies
nonhuman primates
immunoprophylaxis
pharmacokinetics
Microbiology
QR1-502
Brandon J. Beddingfield
Nicholas J. Maness
Nicholas J. Maness
Alyssa C. Fears
Jay Rappaport
Jay Rappaport
Pyone Pyone Aye
Kasi Russell-Lodrigue
Lara A. Doyle-Meyers
Robert V. Blair
Ann M. Carias
Patrick J. Madden
Ramon Lorenzo Redondo
Hongmei Gao
David Montefiori
David Montefiori
Thomas J. Hope
Chad J. Roy
Chad J. Roy
Effective Prophylaxis of COVID-19 in Rhesus Macaques Using a Combination of Two Parenterally-Administered SARS-CoV-2 Neutralizing Antibodies
description SARS-CoV-2 is a respiratory borne pathogenic beta coronavirus that is the source of a worldwide pandemic and the cause of multiple pathologies in man. The rhesus macaque model of COVID-19 was utilized to test the added benefit of combinatory parenteral administration of two high-affinity anti-SARS-CoV-2 monoclonal antibodies (mAbs; C144-LS and C135-LS) expressly developed to neutralize the virus and modified to extend their pharmacokinetics. After completion of kinetics study of mAbs in the primate, combination treatment was administered prophylactically to mucosal viral challenge. Results showed near complete virus neutralization evidenced by no measurable titer in mucosal tissue swabs, muting of cytokine/chemokine response, and lack of any discernable pathologic sequalae. Blocking infection was a dose-related effect, cohorts receiving lower doses (6, 2 mg/kg) resulted in low grade viral infection in various mucosal sites compared to that of a fully protective dose (20 mg/kg). A subset of animals within this cohort whose infectious challenge was delayed 75 days later after mAb administration were still protected from disease. Results indicate this combination mAb effectively blocks development of COVID-19 in the rhesus disease model and accelerates the prospect of clinical studies with this effective antibody combination.
format article
author Brandon J. Beddingfield
Nicholas J. Maness
Nicholas J. Maness
Alyssa C. Fears
Jay Rappaport
Jay Rappaport
Pyone Pyone Aye
Kasi Russell-Lodrigue
Lara A. Doyle-Meyers
Robert V. Blair
Ann M. Carias
Patrick J. Madden
Ramon Lorenzo Redondo
Hongmei Gao
David Montefiori
David Montefiori
Thomas J. Hope
Chad J. Roy
Chad J. Roy
author_facet Brandon J. Beddingfield
Nicholas J. Maness
Nicholas J. Maness
Alyssa C. Fears
Jay Rappaport
Jay Rappaport
Pyone Pyone Aye
Kasi Russell-Lodrigue
Lara A. Doyle-Meyers
Robert V. Blair
Ann M. Carias
Patrick J. Madden
Ramon Lorenzo Redondo
Hongmei Gao
David Montefiori
David Montefiori
Thomas J. Hope
Chad J. Roy
Chad J. Roy
author_sort Brandon J. Beddingfield
title Effective Prophylaxis of COVID-19 in Rhesus Macaques Using a Combination of Two Parenterally-Administered SARS-CoV-2 Neutralizing Antibodies
title_short Effective Prophylaxis of COVID-19 in Rhesus Macaques Using a Combination of Two Parenterally-Administered SARS-CoV-2 Neutralizing Antibodies
title_full Effective Prophylaxis of COVID-19 in Rhesus Macaques Using a Combination of Two Parenterally-Administered SARS-CoV-2 Neutralizing Antibodies
title_fullStr Effective Prophylaxis of COVID-19 in Rhesus Macaques Using a Combination of Two Parenterally-Administered SARS-CoV-2 Neutralizing Antibodies
title_full_unstemmed Effective Prophylaxis of COVID-19 in Rhesus Macaques Using a Combination of Two Parenterally-Administered SARS-CoV-2 Neutralizing Antibodies
title_sort effective prophylaxis of covid-19 in rhesus macaques using a combination of two parenterally-administered sars-cov-2 neutralizing antibodies
publisher Frontiers Media S.A.
publishDate 2021
url https://doaj.org/article/9bf5b7e52088482b9bde993ef28f1d7d
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