TY - JOUR
T1 - Interleukin-4-dependent production of PPAR-γ ligands in macrophages by 12/15-lipoxygenase
AU - Huang, Jannet T.
AU - Welch, John S.
AU - Ricote, Mercedes
AU - Binder, Christoph J.
AU - Willson, Timothy M.
AU - Kelly, Carolyn
AU - Witztum, Joseph L.
AU - Funk, Colin D.
AU - Conrad, Douglas
AU - Glass, Christopher K.
PY - 1999/7/22
Y1 - 1999/7/22
N2 - The peroxisome proliferator-activated receptor-γ (PPAR-γ) is a ligand- dependent nuclear receptor that has been implicated in the modulation of critical aspects of development and homeostasis, including adipocyte differentiation, glucose metabolism and macrophage development and function. PPAR-γ is activated by a range of synthetic and naturally occurring substances, including antidiabetic thiazolidinediones, polyunsaturated fatty acids, 15-deoxy-Δ prostaglandin J2 (refs 8, 9) and components of oxidized low-density lipoprotein, such as 13-hydroxyoctadecadienoic acid (13-HODE) and 15-hydroxyeicosatetraenoic acid (15-HETE). However, the identities of endogenous ligands for PPAR-γ and their means of production in vivo have not been established. In monocytes and macrophages, 13-HODE and 15-HETE can be generated from linoleic and arachidonic acids, respectively, by a 12/15- lipoxygenase that is upregulated by the T(H)2-derived cytokine interleukin-4 (ref. 11). Here we show that interleukin-4 also induces the expression of PPAR-γ and provide evidence that the coordinate induction of PPAR-γ and 12/15-lipoxygenase mediates interleukin-4-dependent transcription of the- CD36 gene in macrophages. These findings reveal a physiological role of 12/15-lipoxygense in the generation of endogenous ligands for PPAR-γ, and suggest a paradigm for the regulation of nuclear receptor function by cytokines.
AB - The peroxisome proliferator-activated receptor-γ (PPAR-γ) is a ligand- dependent nuclear receptor that has been implicated in the modulation of critical aspects of development and homeostasis, including adipocyte differentiation, glucose metabolism and macrophage development and function. PPAR-γ is activated by a range of synthetic and naturally occurring substances, including antidiabetic thiazolidinediones, polyunsaturated fatty acids, 15-deoxy-Δ prostaglandin J2 (refs 8, 9) and components of oxidized low-density lipoprotein, such as 13-hydroxyoctadecadienoic acid (13-HODE) and 15-hydroxyeicosatetraenoic acid (15-HETE). However, the identities of endogenous ligands for PPAR-γ and their means of production in vivo have not been established. In monocytes and macrophages, 13-HODE and 15-HETE can be generated from linoleic and arachidonic acids, respectively, by a 12/15- lipoxygenase that is upregulated by the T(H)2-derived cytokine interleukin-4 (ref. 11). Here we show that interleukin-4 also induces the expression of PPAR-γ and provide evidence that the coordinate induction of PPAR-γ and 12/15-lipoxygenase mediates interleukin-4-dependent transcription of the- CD36 gene in macrophages. These findings reveal a physiological role of 12/15-lipoxygense in the generation of endogenous ligands for PPAR-γ, and suggest a paradigm for the regulation of nuclear receptor function by cytokines.
UR - http://www.scopus.com/inward/record.url?scp=0033595261&partnerID=8YFLogxK
U2 - 10.1038/22572
DO - 10.1038/22572
M3 - Article
C2 - 10432118
AN - SCOPUS:0033595261
VL - 400
SP - 378
EP - 382
JO - Nature
JF - Nature
SN - 0028-0836
IS - 6742
ER -