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   非常勤講師
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Liver sinusoidal endothelial cells contribute to alloreactive T-cell tolerance induced by portal venous injection of donor splenocytes.
掲載誌名	正式名：Transplant international : official journal of the European Society for Organ Transplantation 略　 称：Transpl Int ISSNコード：09340874/09340874
掲載区分	国外
巻・号・頁	18(2),pp.237-45
著者・共著者	Tokita Daisuke, Ohdan Hideki, Onoe Takashi, Hara Hidetaka, Tanaka Yuka, Asahara Toshimasa
担当区分	筆頭著者
発行年月	2005/02
概要	We demonstrated that an indirect pathway of alloantigen presentation via liver sinusoidal endothelial cells (LSEC) is involved in alloreactive T-cell tolerance induced by portal venous injection (PI) of donor cells. Thirty million C57BL/6 (B6) splenocytes that were either untreated or treated with 30-Gy irradiation were injected via the portal vein into Balb/c mice. Host LSEC expressing major histocompatibility complex class II actively endocytosed the allogeneic naive splenocytes as well as irradiated splenocytes after PI. Using a transendothelial migration assay, it was demonstrated that host-type Balb/c CD4(+) T cells that transmigrated across LSEC that had captured irradiated B6 splenocytes were rendered tolerant to subsequent alloantigen presentation by host professional antigen-presenting cells. Consistently, PI of irradiated donor-type splenocytes led to remarkable prolongation of the survival of subsequently transplanted heart allografts. These results indicate that indirect antigen presentation by LSEC significantly contributes to alloreactive T-cell tolerance induced by PI of irradiated donor splenocytes.
DOI	10.1111/j.1432-2277.2004.00045.x
PMID	15691278