Rolipram represses MRP8/14-induced pro-inflammatory cytokine releases in RAW264.7 cells through NF-κB activation / 中国病理生理杂志
Chinese Journal of Pathophysiology
;
(12): 1098-1103, 2017.
Article
in Chinese
| WPRIM
| ID: wpr-612821
ABSTRACT
AIM:
To investigate the inhibitory effect of PDE4 inhibitor rolipram on the releases of inflammatory cytokines in mouse macrophages (RAW264.7 cells) induced by myeloid-related protein 8/14 (MRP8/14), and to explore the role of nuclear factor-κB (NF-κB) in this process.METHODS:
RAW264.7 cells were treated with MRP8/14.The inflammatory cytokines TNF-α and IL-6 were determined by LiquiChip and qPCR.In contrast, RAW264.7 cells were pretreated with rolipram prior to MRP8/14 exposure.After MRP8/14 challenge, the inflammatory cytokines TNF-α and IL-6 were determined by LiquiChip and qPCR.Moreover, the phosphorylation level of NF-κB P65 was determined by Western blot.The nuclear translocation of NF-κB P65 in RAW264.7 cells was detected by indirect immunofluorescence.RESULTS:
The results of LiquiChip and qPCR showed that MRP8/14 enhanced the expression of TNF-α and IL-6 (P<0.01),while pretreatment with rolipram markedly down-regulated the level of inflammatory cytokines induced by MRP8/14 (P<0.05).Meanwhile, MRP8/14 significantly activated the phosphorylation of NF-κB P65, and the protein expression of p65 in the nucleus was increased,while pretreatment with rolipram suppressed the phosphorylation of NF-κB P65 induced by MRP8/14.CONCLUSION:
Rolipram may significantly reduce the releases of the inflammatory cytokines induced by MRP8/14 through the NF-κB signaling.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Chinese Journal of Pathophysiology
Year:
2017
Type:
Article
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