Development and characterization of monoclonal antibodies to Ebola virus glycoprotein


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Balb/С mice were immunized with recombinant Ebola virus glycoprotein. Following the selection, screening, and cloning of murine hybridomas, we obtained five genetically stable clones of monoclonal antibodies GPE118 (IgG), GPE274 (IgM), GPE325 (IgM), GPE463 (IgM), and GPE534 (IgG). These antibodies were isolated and purified from the ascitic fluid of Balb/С mice using Protein G affinity chromatography (for IgG) and euglobulin precipitation (for IgM). To select at least three candidate antibodies for testing in biological assays as components of an antibody cocktail for the prophylaxis and treatment of hemorrhagic fever, we carried out an immunochemical analysis of the epitope specificity of the isolated antibodies. Based on the data of immunoblotting and sandwich ELISA, it became evident that the epitope recognized by GPE 534 differs from the epitopes recognized by the monoclonal antibodies GPE 118 and GPE 325. The last two antibodies also have different epitope specificity: it follows from the immunoblotting data and from the data on the binding of these antibodies with the intact and oxidized (partly deglycosylated) recombinant glycoprotein. For the biological activity studies and the development of recombinant counterparts, we selected three candidate high-affinity monoclonal antibodies GPE 534, GPE 118, and GPE 325.

Sobre autores

O. Schemchukova

Russian Research Center for Molecular Diagnostics and Therapy

Email: ta12345@list.ru
Rússia, Simferopol bul’v. 8, Moscow, 117638

I. Dement’yeva

Russian Research Center for Molecular Diagnostics and Therapy

Email: ta12345@list.ru
Rússia, Simferopol bul’v. 8, Moscow, 117638

N. Varlamov

Russian Research Center for Molecular Diagnostics and Therapy

Email: ta12345@list.ru
Rússia, Simferopol bul’v. 8, Moscow, 117638

L. Pozdnyakova

Russian Research Center for Molecular Diagnostics and Therapy

Email: ta12345@list.ru
Rússia, Simferopol bul’v. 8, Moscow, 117638

M. Bokov

Russian Research Center for Molecular Diagnostics and Therapy

Email: ta12345@list.ru
Rússia, Simferopol bul’v. 8, Moscow, 117638

T. Aliev

Department of Chemistry

Autor responsável pela correspondência
Email: ta12345@list.ru
Rússia, Moscow, 119234

A. Panina

Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences

Email: ta12345@list.ru
Rússia, ul. Miklukho-Maklaya 16/10, GSP-7, Moscow, 117997

D. Dolgikh

Department of Biology

Email: ta12345@list.ru
Rússia, Moscow, 119234

M. Kirpichnikov

Department of Biology

Email: ta12345@list.ru
Rússia, Moscow, 119234

P. Sveshnikov

Russian Research Center for Molecular Diagnostics and Therapy

Email: ta12345@list.ru
Rússia, Simferopol bul’v. 8, Moscow, 117638

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