T cell development and repertoire of mice expressing a single T cell receptor α chain

T cell development and repertoire of mice expressing a single T cell receptor α chain
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表达单一 T 细胞受体 α 链的小鼠的 T 细胞发育和功能

DOI:
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发表时间:
1995
影响因子:
5.4
通讯作者:
H. Pircher
H. Pircher
中科院分区:
医学3区
文献类型:
--
作者:
D. Brändle;K. Brduscha‐Riem;A. Hayday;M. Owen;H. Hengartner;H. Pircher

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我们研究了表达H-2DB-淋巴细胞性脉络膜脑膜炎病毒(LCMV)特异性溶细胞T淋巴细胞(CTL)克隆P14的单个T细胞受体α链的转基因小鼠的T细胞发育和T细胞库。为了产生这些αP14小鼠,将转P14TCRα链的小鼠与TcRα缺陷小鼠回交。αP14小鼠胸腺中成熟的CD8+8−和CD8+4−单阳性胸腺细胞明显减少,与TCRTCRα缺陷小鼠胸腺相当。相应地,与正常小鼠相比,外周血T细胞在CD4(10倍)和CD8(2倍)亚群中的数量减少。来自αP14小鼠的T细胞在体外被巨细胞病毒刺激时产生了初步的抗巨细胞病毒CTL反应,而正常小鼠在体内需要预充;然而,在体内对巨细胞病毒的清除并没有改善。用V-β特异性抗体对T细胞进行的流式细胞术分析显示,内源性TCRV-β谱系多种多样。然而,对T细胞谱系的功能分析显示,同种异体细胞数量显著减少(30倍),水泡性口炎病毒特异性CTL反应缺失,为抗体同型转换提供T细胞帮助的能力受损。因此,胸腺中的T细胞选择受损,仅表达一种类型TCRα链的小鼠的T细胞谱系受到限制。
We examined T cell development and T cell repertoire in transgenic mice expressing a single T cell receptor (TCR) α chain derived from the H‐2Db ‐lymphocytic choriomeningitis virus (LCMV)‐specific cytolytic T lymphocyte (CTL) clone P14. To generate these α P14 mice, mice transgenic for the P14 TCR α chain were backcrossed to TCR α‐deficient mice. Thymi from α P14 mice exhibited a marked decrease of mature CD4+8− and CD8+4− single‐positive thymocytes comparable to thymi from TCR α‐deficient mice. Correspondingly, the number of peripheral T cells was reduced in the CD4 (tenfold) and in the CD8 (twofold) subsets when compared to normal mice. T cells from α P14 mice generated a primary anti‐LCMV CTL response when stimulated in vitro with LCMV in contrast to normal mice which require priming in vivo; elimination of LCMV in vivo was, however, not improved. Flow cytometric analysis of T cells with Vβ‐specific antibodies showed a diverse endogenous TCR Vβ repertoire. Functional analysis of the T cell repertoire, however, revealed a strongly reduced (30‐fold) allogeneic and the absence of a vesicular stomatitis virus‐specific CTL response and an impaired ability to provide T cell help for antibody isotype switching. Thus, T cell selection in the thymus was impaired and the T cell repertoire was limited in mice expressing only one type of TCR α chain.
T 细胞抗原受体同种异型决定簇特异性鼠单克隆抗体的表征。
DOI: --
发表时间: 1985
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
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影响因子: --
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影响因子: --
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发表时间: 1994
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
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脾嵌合体的分裂耐受性。
DOI: --
发表时间: 1995
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
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Sprent,J;Hurd,M;Schaefer,M;Heath,W
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