LPA5 is abundantly expressed by human mast cells and important for lysophosphatidic acid induced MIP-1β release.

LPA5 is abundantly expressed by human mast cells and important for lysophosphatidic acid induced MIP-1β release.
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DOI:
10.1371/journal.pone.0018192
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发表时间:
2011-03-28
期刊:
影响因子:
3.7
通讯作者:
Boyce JA
Boyce JA
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Lundequist A;Boyce JA

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溶血磷脂酸(LPA)是一种生物活性脂质,通过G蛋白偶联受体诱导肥大细胞增殖、分化以及细胞因子释放。最近GPR 92/LPA 5被鉴定为免疫系统细胞高度表达的LPA受体,这促使我们研究其存在和对肥大细胞的影响。使用定量实时PCR的转录分析显示,LPA 5是人肥大细胞中最普遍的LPA受体。使用shRNA降低LPA 5水平减少了响应于LPA的钙通量并消除了MIP-1β释放。LPA 5是人肥大细胞上的一种真正的LPA受体,负责大部分LPA诱导的MIP-1β释放。
Lysophosphatidic acid (LPA) is a bioactive lipid inducing proliferation, differentiation as well as cytokine release by mast cells through G-protein coupled receptors. Recently GPR92/LPA5 was identified as an LPA receptor highly expressed by cells of the immune system, which prompted us to investigate its presence and influence on mast cells. Transcript analysis using quantitative real-time PCR revealed that LPA5 is the most prevalent LPA-receptor in human mast cells. Reduction of LPA5 levels using shRNA reduced calcium flux and abolished MIP-1β release in response to LPA. LPA5 is a bona fide LPA receptor on human mast cells responsible for the majority of LPA induced MIP-1β release.
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