Fox, Julie M. and Roy, Vicky and Gunn, Bronwyn M. and Huang, Ling and Edeling, Melissa A. and Mack, Matthias and Fremont, Daved H. and Doranz, Benjamin J. and Johnson, Syd and Alter, Galit and Diamond, Michael S. (2019) Optimal therapeutic activity of monoclonal antibodies against chikungunya virus requires Fc-Fc gamma R interaction on monocytes. SCIENCE IMMUNOLOGY, 4 (32): eaav5062. ISSN 2470-9468,
Full text not available from this repository. (Request a copy)Abstract
Chikungunya virus (CHIKV) is an emerging mosquito-borne virus that has caused explosive outbreaks worldwide. Although neutralizing monoclonal antibodies (mAbs) against CHIKV inhibit infection in animals, the contribution of Fc effector functions to protection remains unknown. Here, we evaluated the activity of therapeutic mAbs that had or lacked the ability to engage complement and Fc gamma receptors (Fc gamma R). When administered as post-exposure therapy in mice, the Fc effector functions of mAbs promoted virus clearance from infected cells and reduced joint swelling-results that were corroborated in antibody-treated transgenic animals lacking activating Fc gamma R. The control of CHIKV infection by antibody-Fc gamma R engagement was associated with an accelerated influx of monocytes. A series of immune cell depletions revealed that therapeutic mAbs required monocytes for efficient clearance of CHIKV infection. Overall, our study suggests that in mice, Fc gamma R expression on monocytes is required for optimal therapeutic activity of antibodies against CHIKV and likely other related viruses.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | EFFECTOR FUNCTIONS; MOUSE MODEL; NEUTRALIZING ANTIBODY; IN-VIVO; PROTECTION; RECEPTOR; DISEASE; ALPHAVIRUSES; ARTHRITIS; BINDING; |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Abteilung für Nephrologie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 17 Apr 2020 11:50 |
| Last Modified: | 17 Apr 2020 11:50 |
| URI: | https://pred.uni-regensburg.de/id/eprint/27577 |
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