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Nicholas RE, Sandstrom K, Anderson JL, Smith WR, Wetzel M, Banerjee P, Janaka SK, Evans DT. KIR3DL05 and KIR3DS02 Recognition of a Nonclassical MHC Class I Molecule in the Rhesus Macaque Implicated in Pregnancy Success. Front Immunol 2022; 13:841136. [PMID: 35401580 PMCID: PMC8984097 DOI: 10.3389/fimmu.2022.841136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 03/01/2022] [Indexed: 11/13/2022] Open
Abstract
Knowledge of the MHC class I ligands of rhesus macaque killer-cell Ig-like receptors (KIRs) is fundamental to understanding the role of natural killer (NK) cells in this species as a nonhuman primate model for infectious diseases, transplantation and reproductive biology. We previously identified Mamu-AG as a ligand for KIR3DL05. Mamu-AG is a nonclassical MHC class I molecule that is expressed at the maternal-fetal interface of the placenta in rhesus macaques similar to HLA-G in humans. Although Mamu-AG and HLA-G share similar molecular features, including limited polymorphism and a short cytoplasmic tail, Mamu-AG is considerably more polymorphic. To determine which allotypes of Mamu-AG serve as ligands for KIR3DL05, we tested reporter cell lines expressing five different alleles of KIR3DL05 (KIR3DL05*001, KIR3DL05*004, KIR3DL05*005, KIR3DL05*008 and KIR3DL05*X) for responses to target cells expressing eight different alleles of Mamu-AG. All five allotypes of KIR3DL05 responded to Mamu-AG2*01:01, two exhibited dominant responses to Mamu-AG1*05:01, and three had low but detectable responses to Mamu-AG3*03:01, -AG3*03:02, -AG3*03:03 and -AG3*03:04. Since KIR3DL05*X is the product of recombination between KIR3DL05 and KIR3DS02, we also tested an allotype of KIR3DS02 (KIR3DS02*004) and found that this activating KIR also recognizes Mamu-AG2*01:01. Additional analysis of Mamu-AG variants with single amino acid substitutions identified residues in the α1-domain essential for recognition by KIR3DL05. These results reveal variation in KIR3DL05 and KIR3DS02 responses to Mamu-AG and define Mamu-AG polymorphisms that differentially affect KIR recognition.
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Affiliation(s)
- Rachel E. Nicholas
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - Kjell Sandstrom
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - Jennifer L. Anderson
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - Willow R. Smith
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - Molly Wetzel
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - Priyankana Banerjee
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - Sanath Kumar Janaka
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - David T. Evans
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, United States,Wisconsin National Primate Research Center, University of Wisconsin-Madison, Madison, WI, United States,*Correspondence: David T. Evans,
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