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
中科院分区:
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
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.
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影响因子:
3.6
作者:
Lieber, Sonja;Scheer, Frithjof;Mueller, Rolf
通讯作者:
Mueller, Rolf
影响因子:
5.4
作者:
Fauti, T;Müller-Brüsselbach, S;Müller, R
通讯作者:
Müller, R
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
影响因子:
3.6
作者:
KELLEY, JL;ROZEK, MM;SCHWARTZ, CJ
通讯作者:
SCHWARTZ, CJ
影响因子:
10.5
作者:
Barish, Grant D.;Yu, Ruth T.;Evans, Ronald M.
通讯作者:
Evans, Ronald M.