egulatory roles of macrophages in choroidal neovascular diseases
巨噬细胞在脉络膜新生血管疾病中的调节作用
基本信息
- 批准号:23689071
- 负责人:
- 金额:$ 16.14万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Young Scientists (A)
- 财政年份:2011
- 资助国家:日本
- 起止时间:2011-04-01 至 2014-03-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The purpose of this study is to clarify regulatory mechanism of macrophages in choroidal neovascular diseases. We show that IL-27, a regulatory cytokine, inhibited VEGFA production in macrophage in vitro. IL-27 also suppressed CNV by VEGFA reduction but not macrophage recruitment in vivo. M2 macrophage (M2) is reported as a source of VEGFA in CNV, indicating that IL-27 might regulate M2 differentiation and/or activation in CNV. Next, we focused on HSP70, an endogenous ligand for Toll-like receptor (TLR) 4/TLR2. HSP70, located in the cytosol and the nucleus of various kinds of cells, is released in response to cellular stress. Although M2 promotes cancer-associated fibrosis by activation of TLR4 signaling, subretinal fibrosis was suppressed by intraocular injection of HSP70 through induction of IL-10, an anti-inflammatory cytokine, via TLR4/TLR2 signaling. The induction of IL-10 was dependent on RPE, but not macrophages, suggesting that RPE is also important for the regulation.
这项研究的目的是阐明脉络膜新生血管疾病中巨噬细胞的调节机制。我们表明,一种调节性细胞因子IL-27抑制了体外巨噬细胞中VEGFA的产生。 IL-27还通过减少VEGFA抑制CNV,但不能在体内募集巨噬细胞。 M2巨噬细胞(M2)被报告为CNV中VEGFA的来源,表明IL-27可能调节CNV中的M2分化和/或激活。接下来,我们专注于HSP70,这是一种用于收费受体(TLR)4/TLR2的内源性配体。 HSP70位于细胞质和各种细胞的核中,响应细胞应激而释放。尽管M2通过激活TLR4信号传导促进与癌症相关的纤维化,但通过TLR4/TLR2信号传导,通过诱导抗炎细胞因子IL-10诱导IL-10,通过诱导IL-10(抗炎细胞因子)诱导HSP70来抑制视网膜下纤维化。 IL-10的诱导取决于RPE,但不取决于巨噬细胞,这表明RPE对于调节也很重要。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Establishment of a New Animal Model of Focal Subretinal Fibrosis That Resembles Disciform Lesion in Advanced Age-Related Macular Degeneration
- DOI:10.1167/iovs.10-5189
- 发表时间:2011-08-01
- 期刊:
- 影响因子:4.4
- 作者:Jo, Young-Joon;Sonoda, Koh-Hei;Ishibashi, Tatsuro
- 通讯作者:Ishibashi, Tatsuro
脈絡膜新生血管とケモカイン受容体CCR3について
关于脉络膜新生血管和趋化因子受体CCR3
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:Kaneko J;Ishizawa T;Kokudo N;et al;武田篤信
- 通讯作者:武田篤信
IL-1b plays a pivotal roles in IL-17 induction from gamma delta T cells and promoting experimental choroidal neovascularization
IL-1b 在 γδT 细胞诱导 IL-17 和促进实验性脉络膜新生血管形成中发挥关键作用
- DOI:
- 发表时间:2012
- 期刊:
- 影响因子:0
- 作者:Hirata M;Saito T;et al.;Eiichi Hasegawa
- 通讯作者:Eiichi Hasegawa
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