トキタ ダイスケ   TOKITA Daisuke
  時田 大輔
   所属   医学部 医学科(東京女子医科大学病院)
   職種   教授
論文種別 原著
言語種別 英語
査読の有無 査読あり
表題 NOD/SCID mice engrafted with human peripheral blood lymphocytes can be a model for investigating B cells responding to blood group A carbohydrate determinant.
掲載誌名 正式名:Transplant immunology
略  称:Transpl Immunol
ISSNコード:09663274/09663274
掲載区分国外
巻・号・頁 12(1),pp.9-18
著者・共著者 Zhou Wendy, Ohdan Hideki, Tanaka Yuka, Hara Hidetaka, Tokita Daisuke, Onoe Takashi, Asahara Toshimasa
発行年月 2003/10
概要 Human antibodies (Abs) against blood group A or B carbohydrate determinant are a major barrier to ABO-incompatible organ transplantation; however, the phenotype and other properties of B cell types responding to A or B carbohydrate epitopes have not been defined. Studies here, which use fluorescein-labeled synthetic A determinant (GalNAcalpha1-3Fucalpha1-2Gal), demonstrate that B cells bearing surface IgM (sIgM) receptors recognizing blood group A carbohydrate determinant are found exclusively in a small B cell subpopulation, i.e. sIgM+ CD11b+ CD5+ B1 cells, in blood group O human peripheral blood mononuclear cells (PBMC). In order to test anti-A Abs producing capacity of the human PBMC, nonobese diabetic (NOD)/severe combined immune-deficient (SCID) mice that have been treated with rabbit anti-asialo GM1 serum to deplete natural killer cells and with 3 Gy of whole body irradiation were engrafted with blood group O or A human PBMC, followed by sensitization of human blood group A red blood cells. Anti-A-specific human Abs were detected in the sera of the mice that received blood group O human PBMC, whereas they were not detected in the sera of the mice that received blood group A human PBMC, indicating profound tolerance of auto-reactive B cells. The human PBMC-NOD/SCID chimera developed by injection of blood group O human PBMC might be a useful in vivo model to test effects of immunosuppressants or other approaches on human B cells that respond to blood group A antigens.
DOI 10.1016/S0966-3274(03)00060-1
PMID 14551028