15-Deoxy-delta(12,14)-prostaglandin J2 inhibits the IL-1beta-induced expression of granulocyte-macrophage colony-stimulating factor in BEAS-2B bronchial epithelial cells.
15-Deoxy-delta(12,14)-prostaglandin J2 (15d-PGJ2) is an agonist for peroxisome proliferator-activated receptor-gamma (PPAR-gamma), which plays an important role in various biological processes including inflammatory responses. We have addressed the effect of 15d-PGJ2 on the expression of granulocyte-macrophage colony-stimulating factor (GM-CSF) in a cell line derived from human bronchial epithelial cells (BEAS-2B). Besides being a hematopoietic growth factor, GM-CSF activates mature leukocytes and is involved in regulation of inflammatory responses. Cultures of BEAS-2B were stimulated with interleukin-1beta (IL-1beta), and the expressions of GM-CSF mRNA and protein were analyzed by reverse transcription-polymerase chain reaction and enzyme-linked immunosorbent assay, respectively. IL-1beta stimulated the expression of GM-CSF in BEAS-2B cells in concentration- and time-dependent manners. When the cells were pretreated with 15d-PGJ2 for 1 hour, the IL-1beta-induced GM-CSF expression was inhibited in a concentration-dependent manner (2-50 microM). Ciglitazone, another agonist of PPAR-gamma, did not affect the IL-1beta-induced GM-CSF expression in BEAS-2B cells. A PPAR-gamma antagonist, bisphenol A diglycide ether (BADGE), did not reverse the inhibitory effects of 15d-PGJ2 on GM-CSF expression. 15d-PGJ2 regulates GM-CSF expression in the bronchial epithelium, which may be mediated through a mechanism unrelated to PPAR-gamma.
Kumagai
Mika
M
Department of Vascular Biology, Institute of Brain Science, Hirosaki University School of Medicine, Hirosaki 036-8562, Japan.
Imaizumi
Tadaatsu
T
Suzuki
Katsuhiko
K
Yoshida
Hidemi
H
Takanashi
Shingo
S
Okumura
Ken
K
Sugawarai
Kazuo
K
Satoh
Kei
K
D001980:Bronchi / Q000166:cytology / Q000187:drug effects / Q000378:metabolism*; D002460:Cell Line; D017931:DNA Primers; D004797:Enzyme-Linked Immunosorbent Assay; D004847:Epithelial Cells / Q000187:drug effects / Q000378:metabolism; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000096:biosynthesis*; D006801:Humans; D007375:Interleukin-1 / Q000037:antagonists & inhibitors* / Q000494:pharmacology*; D015230:Prostaglandin D2 / Q000031:analogs & derivatives / Q000494:pharmacology*; D012333:RNA, Messenger / Q000096:biosynthesis; D018160:Receptors, Cytoplasmic and Nuclear / Q000819:agonists; D020133:Reverse Transcriptase Polymerase Chain Reaction; D013268:Stimulation, Chemical; D014157:Transcription Factors / Q000819:agonists
C097240:15-deoxy-delta(12,14)-prostaglandin J2; D017931:DNA Primers; D007375:Interleukin-1; D012333:RNA, Messenger; D018160:Receptors, Cytoplasmic and Nuclear; D014157:Transcription Factors; D016178:Granulocyte-Macrophage Colony-Stimulating Factor; D015230:Prostaglandin D2