The transcriptional PPARβ/δ network in human macrophages defines a unique agonist-induced activation state.

The transcriptional PPARβ/δ network in human macrophages defines a unique agonist-induced activation state.
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DOI:
10.1093/nar/gkv331
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发表时间:
2015-05-26
影响因子:
14.9
通讯作者:
Müller R
Müller R
中科院分区:
生物学2区
文献类型:
--
作者:
Adhikary T;Wortmann A;Schumann T;Finkernagel F;Lieber S;Roth K;Toth PM;Diederich WE;Nist A;Stiewe T;Kleinesudeik L;Reinartz S;Müller-Brüsselbach S;Müller R

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过氧化物酶体增殖物激活受体 β/δ (PPARβ/δ) 是一种脂质配体诱导的转录因子,具有已确定的代谢功能,但其抗炎功能知之甚少。为了解决这个问题,我们确定了人单核细胞来源的巨噬细胞中全局 PPARβ/δ 调节的信号网络。除了与细胞类型无关、具有代谢和免疫调节功能的典型靶基因外,我们还发现了大量被激动剂抑制的与炎症相关的 NFκB 和 STAT1 靶基因。因此,PPARβ/δ 激动剂抑制多种促炎介质的表达并诱导抗炎、IL-4 样形态表型。令人惊讶的是,生物信息学分析还发现了免疫刺激作用。与这一预测一致,PPARβ/δ 激动剂增强了巨噬细胞在缺氧应激下的存活并刺激 CD8+ T 细胞活化,同时抑制免疫抑制靶基因及其编码产物 CD274(PD-1 配体)、CD32B(抑制性 Fcγ 受体 IIB)和吲哚胺 2,3-双加氧酶 1 (IDO-1),以及 免疫抑制 IDO-1 代谢物犬尿氨酸的释放减少。与已发表的数据比较显示,PPARβ/δ 转录组与抗炎和促炎细胞因子特征的共表达模块显着重叠。我们的研究结果表明,PPARβ/δ 激动剂诱导独特的巨噬细胞激活状态,具有强抗炎作用,而且还具有特定的免疫刺激成分,表明 PPARβ/δ 在免疫调节中具有环境依赖性功能。
Peroxisome proliferator-activated receptor β/δ (PPARβ/δ) is a lipid ligand-inducible transcription factor with established metabolic functions, whereas its anti-inflammatory function is poorly understood. To address this issue, we determined the global PPARβ/δ-regulated signaling network in human monocyte-derived macrophages. Besides cell type-independent, canonical target genes with metabolic and immune regulatory functions we identified a large number of inflammation-associated NFκB and STAT1 target genes that are repressed by agonists. Accordingly, PPARβ/δ agonists inhibited the expression of multiple pro-inflammatory mediators and induced an anti-inflammatory, IL-4-like morphological phenotype. Surprisingly, bioinformatic analyses also identified immune stimulatory effects. Consistent with this prediction, PPARβ/δ agonists enhanced macrophage survival under hypoxic stress and stimulated CD8+ T cell activation, concomitantly with the repression of immune suppressive target genes and their encoded products CD274 (PD-1 ligand), CD32B (inhibitory Fcγ receptor IIB) and indoleamine 2,3-dioxygenase 1 (IDO-1), as well as a diminished release of the immune suppressive IDO-1 metabolite kynurenine. Comparison with published data revealed a significant overlap of the PPARβ/δ transcriptome with coexpression modules characteristic of both anti-inflammatory and pro-inflammatory cytokines. Our findings indicate that PPARβ/δ agonists induce a unique macrophage activation state with strong anti-inflammatory but also specific immune stimulatory components, pointing to a context-dependent function of PPARβ/δ in immune regulation.
DOI: 10.1124/mol.114.094672
发表时间: 2015-02-01
影响因子: 3.6
作者:
Lieber, Sonja;Scheer, Frithjof;Mueller, Rolf
通讯作者: Mueller, Rolf
DOI: 10.1111/j.1742-4658.2005.05055.x
发表时间: 2006-01-01
期刊: FEBS JOURNAL
影响因子: 5.4
作者:
Fauti, T;Müller-Brüsselbach, S;Müller, R
通讯作者: Müller, R
全基因组分析通过过氧化物酶体增殖物激活受体-β/δ(PPARβ/δ)定义了不同的转录调节模式。
DOI: 10.1371/journal.pone.0016344
发表时间: 2011-01-19
期刊: PloS one
影响因子: 3.7
作者:
Adhikary T;Kaddatz K;Finkernagel F;Schönbauer A;Meissner W;Scharfe M;Jarek M;Blöcker H;Müller-Brüsselbach S;Müller R
通讯作者: Müller R
DOI: 10.1016/0014-4800(87)90049-9
发表时间: 1987-06-01
影响因子: 3.6
作者:
KELLEY, JL;ROZEK, MM;SCHWARTZ, CJ
通讯作者: SCHWARTZ, CJ
DOI: 10.1101/gad.1998010
发表时间: 2010-12-15
影响因子: 10.5
作者:
Barish, Grant D.;Yu, Ruth T.;Evans, Ronald M.
通讯作者: Evans, Ronald M.