Interaction of the endogenous antibody response with activating FcγRs enhance control of Mayaro virus through monocytes.
Mayaro virus (MAYV) is an emerging arbovirus. Previous studies have shown antibody Fc effector functions are critical for optimal monoclonal antibody-mediated protection against alphaviruses; however, the requirement of Fc gamma receptors (FcγRs) for protection during natural infection has not been...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2025-02-01
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| Series: | PLoS Pathogens |
| Online Access: | https://doi.org/10.1371/journal.ppat.1012944 |
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| _version_ | 1850160137248964608 |
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| author | Megan M Dunagan Nathânia Dábilla Colton McNinch Jason M Brenchley Patrick T Dolan Julie M Fox |
| author_facet | Megan M Dunagan Nathânia Dábilla Colton McNinch Jason M Brenchley Patrick T Dolan Julie M Fox |
| author_sort | Megan M Dunagan |
| collection | DOAJ |
| description | Mayaro virus (MAYV) is an emerging arbovirus. Previous studies have shown antibody Fc effector functions are critical for optimal monoclonal antibody-mediated protection against alphaviruses; however, the requirement of Fc gamma receptors (FcγRs) for protection during natural infection has not been evaluated. Here, we showed mice lacking activating FcγRs (FcRγ-/-) developed prolonged clinical disease with increased MAYV in joint-associated tissues. Viral reduction was associated with anti-MAYV cell surface binding antibodies rather than neutralizing antibodies. Lack of Fc-FcγR engagement increased the number of monocytes present in the joint-associated tissue through chronic timepoints. Single-cell RNA sequencing showed elevated levels of pro-inflammatory monocytes in joint-associated tissue with increased MAYV RNA present in FcRγ-/- monocytes and macrophages. Transfer of FcRγ-/- monocytes into wild type animals was sufficient to increase virus in joint-associated tissue. Overall, this study suggests that engagement of antibody Fc with activating FcγRs promotes protective responses during MAYV infection and prevents a pro-viral role for monocytes. |
| format | Article |
| id | doaj-art-de9fba9ac21c427db8bd69d2e1ba5ca3 |
| institution | OA Journals |
| issn | 1553-7366 1553-7374 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS Pathogens |
| spelling | doaj-art-de9fba9ac21c427db8bd69d2e1ba5ca32025-08-20T02:23:15ZengPublic Library of Science (PLoS)PLoS Pathogens1553-73661553-73742025-02-01212e101294410.1371/journal.ppat.1012944Interaction of the endogenous antibody response with activating FcγRs enhance control of Mayaro virus through monocytes.Megan M DunaganNathânia DábillaColton McNinchJason M BrenchleyPatrick T DolanJulie M FoxMayaro virus (MAYV) is an emerging arbovirus. Previous studies have shown antibody Fc effector functions are critical for optimal monoclonal antibody-mediated protection against alphaviruses; however, the requirement of Fc gamma receptors (FcγRs) for protection during natural infection has not been evaluated. Here, we showed mice lacking activating FcγRs (FcRγ-/-) developed prolonged clinical disease with increased MAYV in joint-associated tissues. Viral reduction was associated with anti-MAYV cell surface binding antibodies rather than neutralizing antibodies. Lack of Fc-FcγR engagement increased the number of monocytes present in the joint-associated tissue through chronic timepoints. Single-cell RNA sequencing showed elevated levels of pro-inflammatory monocytes in joint-associated tissue with increased MAYV RNA present in FcRγ-/- monocytes and macrophages. Transfer of FcRγ-/- monocytes into wild type animals was sufficient to increase virus in joint-associated tissue. Overall, this study suggests that engagement of antibody Fc with activating FcγRs promotes protective responses during MAYV infection and prevents a pro-viral role for monocytes.https://doi.org/10.1371/journal.ppat.1012944 |
| spellingShingle | Megan M Dunagan Nathânia Dábilla Colton McNinch Jason M Brenchley Patrick T Dolan Julie M Fox Interaction of the endogenous antibody response with activating FcγRs enhance control of Mayaro virus through monocytes. PLoS Pathogens |
| title | Interaction of the endogenous antibody response with activating FcγRs enhance control of Mayaro virus through monocytes. |
| title_full | Interaction of the endogenous antibody response with activating FcγRs enhance control of Mayaro virus through monocytes. |
| title_fullStr | Interaction of the endogenous antibody response with activating FcγRs enhance control of Mayaro virus through monocytes. |
| title_full_unstemmed | Interaction of the endogenous antibody response with activating FcγRs enhance control of Mayaro virus through monocytes. |
| title_short | Interaction of the endogenous antibody response with activating FcγRs enhance control of Mayaro virus through monocytes. |
| title_sort | interaction of the endogenous antibody response with activating fcγrs enhance control of mayaro virus through monocytes |
| url | https://doi.org/10.1371/journal.ppat.1012944 |
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