T cell receptor dynamism of mucosal and systemic CD4+ T cells in the course of an immune response to Escherichia coli heat-labile enterotoxin.

T cell receptor dynamism of mucosal and systemic CD4+ T cells in the course of an immune response to Escherichia coli heat-labile enterotoxin.
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在对大肠杆菌不耐热肠毒素的免疫反应过程中,粘膜和全身 CD4 T 细胞的 T 细胞受体动态。

DOI:
10.1086/320995
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发表时间:
2001
期刊:
The Journal of infectious diseases
影响因子:
--
通讯作者:
Kiyono,H
Kiyono,H
中科院分区:
--
文献类型:
--
作者:
Kim,JK;Takahashi,I;Okuda,Y;Itakura,M;McGhee,JR;Kiyono,H

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评估了经口给予大肠杆菌不耐热肠毒素(LT)的小鼠中T细胞受体(TCR)V β表达、使用和克隆性的变化。TCR V β家族的使用和克隆性在单细胞水平上显著改变。在接受治疗的小鼠派伊尔集合淋巴结中,与未接受治疗的小鼠相比,使用TCR V β 6、V β 8和V β 14增加了CD4(+)CD44(+)T细胞。另一方面,在脾CD4(+)CD44(+)T细胞中,TCR V β 1和V β 8的使用增强。从LT激发小鼠中分离的上皮内淋巴细胞显示出扩增的克隆性(例如,V β 1、V β 2、V β 9和V β 18)和改变的TCR V β使用(例如,V β 15、V β 16和V β 17)。这些发现表明,口服LT对粘膜与全身α T细胞诱导CD4(+)T细胞有不同的影响,选择使用V β。这很可能反映了LT作为粘膜调节剂的功能。
The changes in T cell receptor (TCR) Vbeta expression, use, and clonality in mice orally challenged with Escherichia coli heat-labile enterotoxin (LT) were assessed. Use of the TCR Vbeta family and clonality were significantly changed at the single-cell level. In Peyer's patches of treated mice, use of TCR Vbeta6, Vbeta8, and Vbeta14 increased in CD4 (+) CD44 (+) T cells, compared with use in nontreated mice. On the other hand, use of TCR Vbeta1 and Vbeta8 was enhanced in splenic CD4 (+) CD44 (+) T cells. Intraepithelial lymphocytes isolated from LT-challenged mice showed expanded clonality (eg, Vbeta1, Vbeta2, Vbeta9, and Vbeta18) and altered TCR Vbeta use (eg, Vbeta15, Vbeta16, and Vbeta17). These findings reveal that oral administration of LT has distinct effects on mucosal versus systemic alphabeta T cells for induction of CD4 (+) T cells with selected Vbeta use. This most likely reflects the function of LT as a mucosal modulator.
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