PMID- 22965302 OWN - NLM STAT- MEDLINE DCOM- 20140226 LR - 20211021 IS - 1791-3004 (Electronic) IS - 1791-2997 (Linking) VI - 6 IP - 6 DP - 2012 Dec TI - Naringin inhibits chemokine production in an LPS-induced RAW 264.7 macrophage cell line. PG - 1343-50 LID - 10.3892/mmr.2012.1072 [doi] AB - Naringin has been reported to act as an effective anti-inflammatory compound. In a previous study, we demonstrated that the anti-inflammatory effect of naringin on lipopolysaccharide (LPS)-induced acute lung injury in mice correlated with the inhibition of the nuclear factor-kappaB (NF-kappaB) pathway. However, the effects and mechanism of action of naringin on LPS-induced chemokine expression are not yet fully understood. This study aimed to evaluate the effect of naringin on chemokine expression in LPS-induced RAW 264.7 macrophages and to provide insights into the possible underlying mechanisms. We found that the in vitro pre-treatment with naringin led to a significant attenuation in the LPS-induced secretion of interleukin-8 (IL-8), monocyte chemoattractant protein-1 (MCP-1) and macrophage inflammatory protein-1alpha (MIP-1alpha). RT-qPCR demonstrated that naringin significantly reduced the LPS-induced upregulation of IL-8, MCP-1 and MIP-1alpha mRNA expression in a dose-dependent manner. Additionally, western blot analysis revealed that naringin effectively suppressed NF-kappaB activation by inhibiting the degradation of IkappaB-alpha and the translocation of p65. Naringin also attenuated MAPK activation by inhibiting the phosphorylation of ERK1/2, JNK and p38 MAPK. Taken together, these demonstrate that naringin reduces IL-8, MCP-1 and MIP-1alpha secretion and mRNA expression, possibly by blocking the activation of the NF-kappaB and MAPK signaling pathways in LPS-induced RAW 264.7 macrophages. FAU - Liu, Ying AU - Liu Y AD - Key Laboratory of Gene Engineering of the Ministry of Education and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510275, P.R. China. FAU - Su, Wei-wei AU - Su WW FAU - Wang, Sheng AU - Wang S FAU - Li, Pei-bo AU - Li PB LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120910 PL - Greece TA - Mol Med Rep JT - Molecular medicine reports JID - 101475259 RN - 0 (Chemokine CCL3) RN - 0 (Chemokines) RN - 0 (Flavanones) RN - 0 (I-kappa B Proteins) RN - 0 (Interleukin-8) RN - 0 (Lipopolysaccharides) RN - 0 (NF-kappa B) RN - 0 (Nfkbia protein, mouse) RN - 0 (RNA, Messenger) RN - 0 (Receptors, CCR2) RN - 0 (Transcription Factor RelA) RN - 139874-52-5 (NF-KappaB Inhibitor alpha) RN - EC 2.7.11.24 (JNK Mitogen-Activated Protein Kinases) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 1) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 3) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) RN - N7TD9J649B (naringin) SB - IM MH - Animals MH - Cell Line MH - Chemokine CCL3/genetics/metabolism MH - Chemokines/genetics/*metabolism MH - Flavanones/*pharmacology MH - Gene Expression/*drug effects MH - I-kappa B Proteins/metabolism MH - Interleukin-8/genetics/metabolism MH - JNK Mitogen-Activated Protein Kinases/metabolism MH - Lipopolysaccharides/toxicity MH - Macrophages/drug effects MH - Mice MH - Mitogen-Activated Protein Kinase 1/metabolism MH - Mitogen-Activated Protein Kinase 3/metabolism MH - NF-KappaB Inhibitor alpha MH - NF-kappa B/metabolism MH - Phosphorylation/drug effects MH - RNA, Messenger/metabolism MH - Receptors, CCR2/genetics/metabolism MH - Signal Transduction/drug effects MH - Transcription Factor RelA/metabolism MH - p38 Mitogen-Activated Protein Kinases/metabolism OTO - NOTNLM OT - naringin OT - lipopolysaccharide OT - interleukin-8 OT - monocyte chemoattractant protein-1 OT - macrophage inflammatory protein-1alpha OT - nuclear factor-kappaB OT - mitogen-activated protein kinase EDAT- 2012/09/12 06:00 MHDA- 2014/02/27 06:00 CRDT- 2012/09/12 06:00 PHST- 2012/04/28 00:00 [received] PHST- 2012/08/28 00:00 [accepted] PHST- 2012/09/12 06:00 [entrez] PHST- 2012/09/12 06:00 [pubmed] PHST- 2014/02/27 06:00 [medline] AID - 10.3892/mmr.2012.1072 [doi] PST - ppublish SO - Mol Med Rep. 2012 Dec;6(6):1343-50. doi: 10.3892/mmr.2012.1072. Epub 2012 Sep 10.