Role of Gut Cryptopatches in Early Extrathymic Maturation of Intestinal Intraepithelial T Cells1

Role of Gut Cryptopatches in Early Extrathymic Maturation of Intestinal Intraepithelial T Cells1
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肠道隐斑在肠上皮内 T 细胞早期胸腺外成熟中的作用1

DOI:
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发表时间:
2000
影响因子:
4.4
通讯作者:
H. Ishikawa
H. Ishikawa
中科院分区:
医学2区
文献类型:
--
作者:
Takatoku Oida;Kenji Suzuki;M. Nanno;Y. Kanamori;H. Saito;E. Kubota;S. Kato;M. Itoh;S. Kaminogawa;H. Ishikawa

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驻留在鼠肠道cryptopatches(CP)中的造血祖细胞已被证明能产生肠上皮内T细胞(IEL)。为了研究CP在祖细胞成熟中的作用,我们分析了具有共同细胞因子受体γ链(CRγ−/Y)截短突变的雄性小鼠的IEL,其中CP检测不到。不存在IEL表达TCR-γδ(γδ-IEL),CRγ−/Y小鼠中Thy-1highCD 4+和Thy-1highCD 8 αβ+ αβ-IEL的数量急剧减少,而无胸腺CRγ−/Y同窝小鼠中这些αβ-IEL消失。无胸腺CRγ−/Y小鼠具有较小的TCR和αEβ7整合素阴性IEL群体,其特征为胸腺外CD 8 αα+亚群消失,表达前T α、RAG-2和TCR-Cβ,但不表达CD 3 ε转录物。这些来自无胸腺CRγ−/Y小鼠的TCR− IEL没有经历Dβ-Jβ和Vδ-Jδ连接,尽管来自胸腺正常的CRγ−/Y小鼠的胸腺细胞中TCR-β和-δ位点的正常重排。相比之下,无胸腺严重联合免疫缺陷小鼠在正常情况下具有两个主要的TCR−αEβ7+ CD 8 αα+和CD 8 − IEL群体,表达前T α、RAG-2、TCR-Cβ和CD 3 ε转录本。这些发现强调了肠道CP在CD 8 αα+ IEL早期胸腺外成熟中的作用,包括αEβ7整合素的细胞表面表达、CD 3 ε基因转录和TCR基因重排。
Lympho-hemopoietic progenitors residing in murine gut cryptopatches (CP) have been shown to generate intestinal intraepithelial T cells (IEL). To investigate the role of CP in progenitor maturation, we analyzed IEL in male mice with a truncated mutation of common cytokine receptor γ-chain (CRγ−/Y) in which CP were undetectable. IEL-expressing TCR-γδ (γδ-IEL) were absent, and a drastically reduced number of Thy-1highCD4+ and Thy-1highCD8αβ+ αβ-IEL were present in CRγ−/Y mice, whereas these αβ-IEL disappeared from athymic CRγ−/Y littermate mice. Athymic CRγ−/Y mice possessed a small TCR- and αEβ7 integrin-negative IEL population, characterized by the disappearance of the extrathymic CD8αα+ subset, that expressed pre-Tα, RAG-2, and TCR-Cβ but not CD3ε transcripts. These TCR− IEL from athymic CRγ−/Y mice did not undergo Dβ-Jβ and Vδ-Jδ joinings, despite normal rearrangements at the TCR-β and -δ loci in thymocytes from euthymic CRγ−/Y mice. In contrast, athymic severe combined immunodeficient mice in which CP developed normally possessed two major TCR−αEβ7+ CD8αα+ and CD8− IEL populations that expressed pre-Tα, RAG-2, TCR-Cβ, and CD3ε transcripts. These findings underscore the role of gut CP in the early extrathymic maturation of CD8αα+ IEL, including cell-surface expression of αEβ7 integrin, CD3ε gene transcription, and TCR gene rearrangements.
无胸腺放射嵌合体中表达膜 T 细胞受体的骨髓来源肠上皮 T 细胞的分化和功能成熟。
DOI: --
发表时间: 1990
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Mosley,RL;Styre,D;Klein,JR
通讯作者: Klein,JR
DOI: 10.1016/s1074-7613(94)80015-4
发表时间: 1994-12
期刊: Immunity
影响因子: 32.4
作者:
L. Puddington;S. Olson;L. Lefrançois
通讯作者: L. Puddington;S. Olson;L. Lefrançois
在没有照射的情况下胸腺外肠 T 细胞室的重建。
DOI: --
发表时间: 1997
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
LefrancoisL;Olson,S
通讯作者: Olson,S
DOI: 10.1016/s1074-7613(00)80664-0
发表时间: 1998-11-01
期刊: IMMUNITY
影响因子: 32.4
作者:
Lodolce, JP;Boone, DL;Ma, A
通讯作者: Ma, A
肠道 T 细胞的胸腺独立发育。
DOI: 10.1159/000058720
发表时间: 1998
期刊: Chemical immunology.
影响因子: --
作者:
Klein,JR
通讯作者: Klein,JR