WIN55,212-2 inhibits production of CX3CL1 by human astrocytes: involvement of p38 MAP kinase.

WIN55,212-2 inhibits production of CX3CL1 by human astrocytes: involvement of p38 MAP kinase.
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DOI:
10.1007/s11481-009-9147-5
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发表时间:
2009-06
影响因子:
6.2
通讯作者:
Peterson, P. K.
Peterson, P. K.
中科院分区:
医学3区
文献类型:
--
作者:
Sheng, W. S.;Hu, S.;Ni, H. T.;Rock, R. B.;Peterson, P. K.

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CX 3CL 1(fractalkine)已被证明具有神经保护作用,但也可能在人类免疫缺陷病毒(HIV)-1相关的神经发病机制中发挥作用。在这项研究中,我们发现,在用合成大麻素WIN 55,212-2预处理后,用白细胞介素(IL)-1β刺激的人星形胶质细胞产生的CX 3CL 1以浓度依赖性方式受到抑制。CB 2受体选择性拮抗剂SR 144528可显著抑制WIN 55,212-2介导的CX 3CL 1抑制作用,提示CB 2受体相关机制。IL-1β激活p38和ERK 1/2(p44/42)MAPK信号通路,而WIN 55,212-2主要抑制p38 MAPK磷酸化。这一发现反映在使用这些MAPK的已知抑制剂的实验中,表明WIN 55,212-2对CX 3CL 1产生的抑制涉及通过p38 MAPK抑制信号传导。我们的研究结果支持合成大麻素具有抗炎特性的概念,并且这些药物可能对某些神经炎性疾病具有治疗潜力。
CX3CL1 (fractalkine) has been shown to be neuroprotective but also may play a role in human immunodeficiency virus (HIV)-1-associated neuropathogenesis. In this study, we found that production of CX3CL1 by human astrocytes stimulated with interleukin (IL)-1β was inhibited in a concentration-dependent manner following pretreatment with the synthetic cannabinoid WIN55,212-2. The CB2 receptor selective antagonist SR144528 significantly inhibited WIN55,212-2-mediated suppression of CX3CL1 suggesting a CB2 receptor-related mechanism. IL-1β triggered the activation of p38 and ERK1/2 (p44/42) MAP kinase (MAPK) signaling pathways, but WIN55,212-2 mainly inhibited p38 MAPK phosphorylation. This finding was mirrored in experiments using known inhibitors of these MAPKs suggesting that the suppression of CX3CL1 production by WIN55,212-2 involves inhibition of signaling via p38 MAPK. Our results support the concept that synthetic cannabinoids have anti-inflammatory properties and that these agents may have therapeutic potential for certain neuroinflammatory disorders.
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