Biochemical Nature and Cellular Distribution of the Paired Immunoglobulin-like Receptors, PIR-A and PIR-B
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- Hiromi Kubagawa
- From the Division of Developmental and Clinical Immunology, *Department of Pathology, ‡Department of Microbiology, §Department of Pediatrics, and ‖Department of Medicine, University of Alabama at Birmingham, and the ¶Howard Hughes Medical Institute, Birmingham, Alabama 35294; and the **Laboratory of Molecular Genetics and Immunology, The Rockefeller University, New York 10021
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- Ching-Cheng Chen
- From the Division of Developmental and Clinical Immunology, *Department of Pathology, ‡Department of Microbiology, §Department of Pediatrics, and ‖Department of Medicine, University of Alabama at Birmingham, and the ¶Howard Hughes Medical Institute, Birmingham, Alabama 35294; and the **Laboratory of Molecular Genetics and Immunology, The Rockefeller University, New York 10021
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- Le Hong Ho
- From the Division of Developmental and Clinical Immunology, *Department of Pathology, ‡Department of Microbiology, §Department of Pediatrics, and ‖Department of Medicine, University of Alabama at Birmingham, and the ¶Howard Hughes Medical Institute, Birmingham, Alabama 35294; and the **Laboratory of Molecular Genetics and Immunology, The Rockefeller University, New York 10021
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- Toshihide Shimada
- From the Division of Developmental and Clinical Immunology, *Department of Pathology, ‡Department of Microbiology, §Department of Pediatrics, and ‖Department of Medicine, University of Alabama at Birmingham, and the ¶Howard Hughes Medical Institute, Birmingham, Alabama 35294; and the **Laboratory of Molecular Genetics and Immunology, The Rockefeller University, New York 10021
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- Lanier Gartland
- From the Division of Developmental and Clinical Immunology, *Department of Pathology, ‡Department of Microbiology, §Department of Pediatrics, and ‖Department of Medicine, University of Alabama at Birmingham, and the ¶Howard Hughes Medical Institute, Birmingham, Alabama 35294; and the **Laboratory of Molecular Genetics and Immunology, The Rockefeller University, New York 10021
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- Charles Mashburn
- From the Division of Developmental and Clinical Immunology, *Department of Pathology, ‡Department of Microbiology, §Department of Pediatrics, and ‖Department of Medicine, University of Alabama at Birmingham, and the ¶Howard Hughes Medical Institute, Birmingham, Alabama 35294; and the **Laboratory of Molecular Genetics and Immunology, The Rockefeller University, New York 10021
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- Takahiro Uehara
- From the Division of Developmental and Clinical Immunology, *Department of Pathology, ‡Department of Microbiology, §Department of Pediatrics, and ‖Department of Medicine, University of Alabama at Birmingham, and the ¶Howard Hughes Medical Institute, Birmingham, Alabama 35294; and the **Laboratory of Molecular Genetics and Immunology, The Rockefeller University, New York 10021
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- Jeffrey V. Ravetch
- From the Division of Developmental and Clinical Immunology, *Department of Pathology, ‡Department of Microbiology, §Department of Pediatrics, and ‖Department of Medicine, University of Alabama at Birmingham, and the ¶Howard Hughes Medical Institute, Birmingham, Alabama 35294; and the **Laboratory of Molecular Genetics and Immunology, The Rockefeller University, New York 10021
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- Max D. Cooper
- From the Division of Developmental and Clinical Immunology, *Department of Pathology, ‡Department of Microbiology, §Department of Pediatrics, and ‖Department of Medicine, University of Alabama at Birmingham, and the ¶Howard Hughes Medical Institute, Birmingham, Alabama 35294; and the **Laboratory of Molecular Genetics and Immunology, The Rockefeller University, New York 10021
抄録
<jats:p>PIR-A and PIR-B, paired immunoglobulin-like receptors encoded, respectively, by multiple Pira genes and a single Pirb gene in mice, are relatives of the human natural killer (NK) and Fc receptors. Monoclonal and polyclonal antibodies produced against a recombinant PIR protein identified cell surface glycoproteins of ∼85 and ∼120 kD on B cells, granulocytes, and macrophages. A disulfide-linked homodimer associated with the cell surface PIR molecules was identified as the Fc receptor common γ (FcRγc) chain. Whereas PIR-B fibroblast transfectants expressed cell surface molecules of ∼120 kD, PIR-A transfectants expressed the ∼85-kD molecules exclusively intracellularly; PIR-A and FcRγc cotransfectants expressed the PIR-A/ FcRγc complex on their cell surface. Correspondingly, PIR-B was normally expressed on the cell surface of splenocytes from FcRγc−/− mice whereas PIR-A was not. Cell surface levels of PIR molecules on myeloid and B lineage cells increased with cellular differentiation and activation. Dendritic cells, monocytes/macrophages, and mast cells expressed the PIR molecules in varying levels, but T cells and NK cells did not. These experiments define the coordinate cellular expression of PIR-B, an inhibitory receptor, and PIR-A, an activating receptor; demonstrate the requirement of FcRγc chain association for cell surface PIR-A expression; and suggest that the level of FcRγc chain expression could differentially affect the PIR-A/PIR-B equilibrium in different cell lineages.</jats:p>
収録刊行物
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- The Journal of Experimental Medicine
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The Journal of Experimental Medicine 189 (2), 309-318, 1999-01-18
Rockefeller University Press
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詳細情報 詳細情報について
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- CRID
- 1363388846333352448
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- NII論文ID
- 30017416742
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- ISSN
- 15409538
- 00221007
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