Computational-Driven Epitope Verification and Affinity Maturation of TLR4-Targeting Antibodies

Toll-like receptor (TLR) signaling plays a critical role in the induction and progression of autoimmune diseases such as rheumatoid arthritis, systemic lupus erythematous, experimental autoimmune encephalitis, type 1 diabetes mellitus and neurodegenerative diseases. Deciphering antigen recognition b...

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Main Authors: Bilal Ahmad, Maria Batool, Moon-Suk Kim, Sangdun Choi
Format: Article
Language:English
Published: MDPI AG 2021-06-01
Series:International Journal of Molecular Sciences
Subjects:
Online Access:https://www.mdpi.com/1422-0067/22/11/5989
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author Bilal Ahmad
Maria Batool
Moon-Suk Kim
Sangdun Choi
author_facet Bilal Ahmad
Maria Batool
Moon-Suk Kim
Sangdun Choi
author_sort Bilal Ahmad
collection DOAJ
description Toll-like receptor (TLR) signaling plays a critical role in the induction and progression of autoimmune diseases such as rheumatoid arthritis, systemic lupus erythematous, experimental autoimmune encephalitis, type 1 diabetes mellitus and neurodegenerative diseases. Deciphering antigen recognition by antibodies provides insights and defines the mechanism of action into the progression of immune responses. Multiple strategies, including phage display and hybridoma technologies, have been used to enhance the affinity of antibodies for their respective epitopes. Here, we investigate the TLR4 antibody-binding epitope by computational-driven approach. We demonstrate that three important residues, i.e., Y328, N329, and K349 of TLR4 antibody binding epitope identified upon in silico mutagenesis, affect not only the interaction and binding affinity of antibody but also influence the structural integrity of TLR4. Furthermore, we predict a novel epitope at the TLR4-MD2 interface which can be targeted and explored for therapeutic antibodies and small molecules. This technique provides an in-depth insight into antibody–antigen interactions at the resolution and will be beneficial for the development of new monoclonal antibodies. Computational techniques, if coupled with experimental methods, will shorten the duration of rational design and development of antibody therapeutics.
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spelling doaj.art-abd86c4a28ae42e6b7afc8138b5dcda62023-11-21T22:25:39ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672021-06-012211598910.3390/ijms22115989Computational-Driven Epitope Verification and Affinity Maturation of TLR4-Targeting AntibodiesBilal Ahmad0Maria Batool1Moon-Suk Kim2Sangdun Choi3Department of Molecular Science and Technology, Ajou University, Suwon 16499, KoreaDepartment of Molecular Science and Technology, Ajou University, Suwon 16499, KoreaDepartment of Molecular Science and Technology, Ajou University, Suwon 16499, KoreaDepartment of Molecular Science and Technology, Ajou University, Suwon 16499, KoreaToll-like receptor (TLR) signaling plays a critical role in the induction and progression of autoimmune diseases such as rheumatoid arthritis, systemic lupus erythematous, experimental autoimmune encephalitis, type 1 diabetes mellitus and neurodegenerative diseases. Deciphering antigen recognition by antibodies provides insights and defines the mechanism of action into the progression of immune responses. Multiple strategies, including phage display and hybridoma technologies, have been used to enhance the affinity of antibodies for their respective epitopes. Here, we investigate the TLR4 antibody-binding epitope by computational-driven approach. We demonstrate that three important residues, i.e., Y328, N329, and K349 of TLR4 antibody binding epitope identified upon in silico mutagenesis, affect not only the interaction and binding affinity of antibody but also influence the structural integrity of TLR4. Furthermore, we predict a novel epitope at the TLR4-MD2 interface which can be targeted and explored for therapeutic antibodies and small molecules. This technique provides an in-depth insight into antibody–antigen interactions at the resolution and will be beneficial for the development of new monoclonal antibodies. Computational techniques, if coupled with experimental methods, will shorten the duration of rational design and development of antibody therapeutics.https://www.mdpi.com/1422-0067/22/11/5989antibodyepitopemolecular dynamicsmutationtoll-like receptor
spellingShingle Bilal Ahmad
Maria Batool
Moon-Suk Kim
Sangdun Choi
Computational-Driven Epitope Verification and Affinity Maturation of TLR4-Targeting Antibodies
International Journal of Molecular Sciences
antibody
epitope
molecular dynamics
mutation
toll-like receptor
title Computational-Driven Epitope Verification and Affinity Maturation of TLR4-Targeting Antibodies
title_full Computational-Driven Epitope Verification and Affinity Maturation of TLR4-Targeting Antibodies
title_fullStr Computational-Driven Epitope Verification and Affinity Maturation of TLR4-Targeting Antibodies
title_full_unstemmed Computational-Driven Epitope Verification and Affinity Maturation of TLR4-Targeting Antibodies
title_short Computational-Driven Epitope Verification and Affinity Maturation of TLR4-Targeting Antibodies
title_sort computational driven epitope verification and affinity maturation of tlr4 targeting antibodies
topic antibody
epitope
molecular dynamics
mutation
toll-like receptor
url https://www.mdpi.com/1422-0067/22/11/5989
work_keys_str_mv AT bilalahmad computationaldrivenepitopeverificationandaffinitymaturationoftlr4targetingantibodies
AT mariabatool computationaldrivenepitopeverificationandaffinitymaturationoftlr4targetingantibodies
AT moonsukkim computationaldrivenepitopeverificationandaffinitymaturationoftlr4targetingantibodies
AT sangdunchoi computationaldrivenepitopeverificationandaffinitymaturationoftlr4targetingantibodies