Expression and function of Allergin-1 on human primary mast cells.

Expression and function of Allergin-1 on human primary mast cells.
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DOI:
10.1371/journal.pone.0076160
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Shibuya A
Shibuya A
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Nagai K;Tahara-Hanaoka S;Morishima Y;Tokunaga T;Imoto Y;Noguchi E;Kanemaru K;Imai M;Shibayama S;Hizawa N;Fujieda S;Yamagata K;Shibuya A

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肥大细胞(MC)在过敏性和非过敏性免疫应答中起重要作用。人MC的激活受几种细胞表面抑制性受体调节,包括最近鉴定的在人和小鼠MC上表达的Allergin-1。尽管Allergin-1抑制小鼠IgE介导的肥大细胞依赖性过敏反应,但Allergin-1在人原代MC上的表达谱和功能仍未确定。在这里,我们建立了一个七色流式细胞术的方法来评估表达和功能的一个非常小的人原发性MC。我们发现,Allergin-1 S1,Allergin-1的剪接异构体,主要表达在支气管肺泡灌洗液(BAL)和鼻刮标本中的人原发性MC。此外,Allergin-1 S1抑制BAL液中IgE介导的人原代MC活化。这些结果表明,人原代MC上的Allergin-1在表达谱和功能上与小鼠Allergin-1具有相似的特征。
Mast cells (MC) play an important role in allergic and non-allergic immune responses. Activation of human MC is modulated by several cell surface inhibitory receptors, including recently identified Allergin-1 expressed on both human and mouse MC. Although Allergin-1 suppresses IgE-mediated, mast cell–dependent anaphylaxis in mice, the expression profile and function of Allergin-1 on human primary MC remains undetermined. Here, we established a seven-color flow cytometry method for assessing expression and function of a very small number of human primary MC. We show that Allergin-1S1, a splicing isoform of Allergin-1, is predominantly expressed on human primary MC in both bronchoalveolar lavage (BAL) fluid and nasal scratching specimens. Moreover, Allergin-1S1 inhibits IgE-mediated activation from human primary MC in BAL fluid. These results indicate that Allergin-1 on human primary MC exhibits similar characteristics as mouse Allergin-1 in the expression profile and function.
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