The intestinal chemokine thymus-expressed chemokine (CCL25) attracts IgA antibody-secreting cells.

The intestinal chemokine thymus-expressed chemokine (CCL25) attracts IgA antibody-secreting cells.
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DOI:
10.1084/jem.20010670
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发表时间:
2002-01-21
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Butcher EC
Butcher EC
中科院分区:
其他
文献类型:
--
作者:
Bowman EP;Kuklin NA;Youngman KR;Lazarus NH;Kunkel EJ;Pan J;Greenberg HB;Butcher EC

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免疫球蛋白 A (IgA) 可针对粘膜表面的病原体提供保护。据推测,趋化反应以参与粘膜免疫反应的 IgA 浆细胞为目标。我们在此表明​​,胸腺表达的趋化因子 (TECK、CCL25) 是 IgA 抗体分泌细胞 (ASC) 的有效且选择性趋化剂,可有效地从脾脏、集合淋巴结和肠系膜淋巴结募集 IgA 生成细胞。分泌 IgA 抗体的细胞对轮状病毒(一种肠道病原体)也有良好的反应。相比之下,IgG– 和 IgM–ASC 反应较差。小肠中的上皮细胞是体内 IgA-ASC 定位和 IgA 产生的主要部位,高度且选择性地表达 TECK。 IgA-ASC 向肠上皮细胞趋化因子 TECK 的迁移可能有助于将 IgA 产生细胞靶向肠壁,从而有助于定义和隔离肠道免疫反应。
Immunoglobulin A (IgA) provides protection against pathogens at mucosal surfaces. Chemotactic responses have been hypothesized to target IgA plasma cells involved in mucosal immune responses. We show here that thymus-expressed chemokine (TECK, CCL25) is a potent and selective chemoattractant for IgA antibody-secreting cells (ASC), efficiently recruiting IgA-producing cells from spleen, Peyer's patches, and mesenteric lymph node. Cells secreting IgA antibody in response to rotavirus, an intestinal pathogen, also respond well. In contrast, IgG– and IgM–ASC respond poorly. Epithelial cells in the small intestines, a principal site of IgA–ASC localization and IgA production in the body, highly and selectively express TECK. The migration of IgA–ASC to the intestinal epithelial cell chemokine TECK may help target IgA-producing cells to the gut wall, thus helping define and segregate the intestinal immune response.
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