期刊
ONCOTARGET
卷 8, 期 60, 页码 101175-101188出版社
IMPACT JOURNALS LLC
DOI: 10.18632/oncotarget.20933
关键词
casticin; ICAM-1; Interleukin-1 beta; MAPK; NF-kappa B
资金
- Chang Gung Memorial Hospital [CMRPF1D0101, CMRPF1C0183]
- Chang Gung University of Science and Technology [EZRPF3F3F0241, EZRPF3F3F0251]
The compound casticin, isolated from Vitex rotundifolia, exerts anti-inflammatory effects and causes apoptosis of cancer cells. In this study, we explored the anti-inflammatory effects of casticin and modulation of cyclooxygenase (COX)-2, intercellular adhesion molecule 1 (ICAM-1), and mucin 5AC (MUC5AC) expression in interleukin-1 beta (IL-1 beta)-activated A549 human pulmonary epithelial cells. A549 cells were treated with various concentrations of casticin (5-20 mu M), and an inflammatory response was triggered with interleukin (IL)-1 beta cytokines. Casticin decreased levels of IL-6, tumor necrosis factor a, and IL-8 and suppressed COX-2 expression and prostaglandin E2 production. It also reduced MUC5AC, proinflammatory cytokine, and chemokine gene expression and inhibited ICAM-1 expression for monocyte adhesion in IL-1 beta-stimulated A549 cells. In addition, casticin inhibited phosphorylation of Akt, phosphatidylinositol 3-kinase (PI3K), and mitogen-activated protein kinase (MAPK) and blocked nuclear transcription factor kappa-B (NF-kappa B) subunit p65 protein translocation into the nucleus. Co-culture of NF-kappa B, MAPK, and PI3K inhibitors with casticin also led to more significantly suppressed ICAM-1 expression in inflammatory A549 cells. These results provide evidence that casticin has an anti-inflammatory effect by blocking proinflammatory cytokine, chemokine, and ICAM1 expression via suppression of the PI3K/Akt, NF-kappa B, and MAPK signaling pathways in IL-1 beta-stimulated inflammatory pulmonary epithelial cells.
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