1
|
Crowley AR, Osei-Owusu NY, Dekkers G, Gao W, Wuhrer M, Magnani DM, Reimann KA, Pincus SH, Vidarsson G, Ackerman ME. Biophysical Evaluation of Rhesus Macaque Fc Gamma Receptors Reveals Similar IgG Fc Glycoform Preferences to Human Receptors. Front Immunol 2021; 12:754710. [PMID: 34712242 PMCID: PMC8546228 DOI: 10.3389/fimmu.2021.754710] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 09/27/2021] [Indexed: 01/15/2023] Open
Abstract
Rhesus macaques are a common non-human primate model used in the evaluation of human monoclonal antibodies, molecules whose effector functions depend on a conserved N-linked glycan in the Fc region. This carbohydrate is a target of glycoengineering efforts aimed at altering antibody effector function by modulating the affinity of Fcγ receptors. For example, a reduction in the overall core fucose content is one such strategy that can increase antibody-mediated cellular cytotoxicity by increasing Fc-FcγRIIIa affinity. While the position of the Fc glycan is conserved in macaques, differences in the frequency of glycoforms and the use of an alternate monosaccharide in sialylated glycan species add a degree of uncertainty to the testing of glycoengineered human antibodies in rhesus macaques. Using a panel of 16 human IgG1 glycovariants, we measured the affinities of macaque FcγRs for differing glycoforms via surface plasmon resonance. Our results suggest that macaques are a tractable species in which to test the effects of antibody glycoengineering.
Collapse
Affiliation(s)
- Andrew R. Crowley
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, NH, United States
| | - Nana Yaw Osei-Owusu
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, NH, United States
| | - Gillian Dekkers
- Sanquin Research and Landsteiner Laboratory, Academic Medical Centre, Department of Experimental Immunohematology, University of Amsterdam, Amsterdam, Netherlands
| | - Wenda Gao
- Antagen Pharmaceuticals Inc., Boston, MA, United States
| | - Manfred Wuhrer
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, Netherlands
| | - Diogo M. Magnani
- Nonhuman Primate Reagent Resource, MassBiologics of the University of Massachusetts Medical School, Boston, MA, United States
| | - Keith A. Reimann
- Nonhuman Primate Reagent Resource, MassBiologics of the University of Massachusetts Medical School, Boston, MA, United States
| | - Seth H. Pincus
- Department of Microbiology, Immunology and Parasitology, Louisiana State University Health Sciences Center, New Orleans, LA, United States
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT, United States
| | - Gestur Vidarsson
- Sanquin Research and Landsteiner Laboratory, Academic Medical Centre, Department of Experimental Immunohematology, University of Amsterdam, Amsterdam, Netherlands
| | - Margaret E. Ackerman
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, NH, United States
- Thayer School of Engineering, Dartmouth College, Hanover, NH, United States
| |
Collapse
|