您現在的位置:首頁 > 資料文獻 > 肝臟

              PNAS: Liver type I regulatory T cells suppress germinal centerformation in HBV-tolerant mice

              作者:   發布于:2023年08月08日  點擊量:1043
              Title:Liver type I regulatory T cells suppress germinal center formation in HBV-tolerant mice
              Journal:PNASYear:2013
              Abstract

              The liver plays a critical role in inducing systemic immune tolerance, for example, during limiting hypersensitivity to food allergy and in rendering acceptance of allotransplant or even hepatotropic pathogens. We investigated the unknown mechanisms of liver tolerance by using an established hepatitis B virus (HBV)-carrier mouse model, and found that these mice exhibited an antigen-specific tolerance toward peripheral HBsAg vaccination, showing unenlarged draining lymph node (DLN), lower number of germinal centers (GC), and inactivation of GC B cells and follicular T helper (Tfh) cells. Both in vivo and in vitro immune responses toward HBsAg were suppressed by mononuclear cells from HBV-carrier mice, which were CD4+ Foxp3? type 1 regulatory T (Tr1)-like cells producing IL-10. Using recipient Rag1?/?mice, hepatic Tr1-like cells from day 7 of HBV-persistent mice acquired the ability to inhibit anti-HBV immunity 3 d earlier than splenic Tr1-like cells, implying that hepatic Tr1-like cells were generated before those in spleen. Kupffer cell depletion or IL-10 deficiency led to impairment of Tr1-like cell generation, along with breaking HBV persistence. The purified EGFP+CD4+ T cells (containing Tr1-like cells) from HBV-carrier mice trafficked in higher numbers to DLN in recipient mice after HBsAg vaccination, and subsequently inactivated both Tfh cells and GC B cells via secreting IL-10, resulting in impaired GC formation and anti-HB antibody production. Thus, our results indicate Tr1-like cells migrate from the liver to the DLN and inhibit peripheral anti-HBV immunity by negatively regulating GC B cells and Tfh cells.



              国语自产精品视频在线区| 92精品国产自产在线观看| 亚洲愉拍自拍欧美精品| 8050免费午夜一级国产精品| 精品国产青草久久久久福利 | 精品欧美| 综合久久精品色| 国产成人无码久久久精品一| 999久久久国产精品| 亚洲视频在线中文视频| 国产日韩精品欧美一区| 国产精品嫩草影院久久| 亚洲国产精品无码成人片久久| 精品国产日产一区二区三区| 久草欧美精品在线观看| 亚洲国产另类久久久精品| 欧美亚洲精品在线| 伊人久久精品影院| 国产精品污视频| 亚洲精品国产精品乱码不卞| 国产精品色内内在线播放| 国产精品欧美亚洲韩国日本久久| freefron性中国国产高清| 午夜精品福利视频| 亚洲中文字幕无码久久精品1| 热99re久久国超精品首页| 亚洲性日韩精品一区二区三区| 99久久久国产精品免费无卡顿 | 亚洲精品无码专区久久久| 精品免费tv久久久久久久| 午夜精品一区二区三区在线视| 国产AV国片精品有毛| 欧美亚洲日本久久精品| 97国产精品视频| 亚洲精品老司机在线观看| 久久精品国产影库免费看| 先锋影音av资源网| 日韩一级精品视频在线观看| 国产男靠女免费视频网站| 国产精品毛片一区二区| 经典国产乱子伦精品视频|