甲酰基肽受体1对BV-2细胞迁移的影响及机制的体外研究

被引:7
作者
薛鑫 [1 ]
陈星星 [1 ]
王冠 [1 ]
郭乔楠 [2 ]
刘明永 [1 ]
赵建华 [1 ]
机构
[1] 第三军医大学大坪医院野战外科研究所脊柱外科
[2] 第三军医大学新桥医院病理科
关键词
FPR1; f MLP; Boc-MLF; 细胞迁移; 小胶质细胞;
D O I
10.16016/j.1000-5404.201504153
中图分类号
R651.2 [脊髓];
学科分类号
100223 [神经外科学];
摘要
目的探讨甲酰基肽受体1(formyl peptide receptor 1,FPR1)对BV-2细胞迁移的影响及潜在机制。方法免疫荧光染色检测BV-2细胞FPR1的表达,Transwell小室实验分别检测浓度为1、10、50、100、500 nmol/L的FPR1特异性激动剂(formylmethionyl-leucyl-phenylalanine,f MLP)对细胞迁移的影响,划痕实验及Transwell小室实验验证f MLP促进细胞迁移的作用可以被FPR1特异性阻断剂BocMLF所抑制。Western blot检测激动剂组、阻断剂组和阻断剂+激动剂组BV-2细胞经干预后其FPR1蛋白和磷酸化细胞外信号调节激酶(phospho-extracellular regulate kinase,p-ERK)蛋白表达量的变化。结果经免疫荧光染色结果显示,BV-2细胞表达FPR1,主要位于细胞膜表面。随着f MLP浓度的升高,Transwell迁移实验结果显示BV-2细胞的迁移能力明显增加(P<0.05),呈现出明显的剂量依赖性。100 nmol/L及500 nmol/L激动剂组效果最明显,f MLP促进BV-2细胞迁移的最适浓度为100 nmol/L。划痕及Transwell小室实验结果显示5μmol/L的Boc-MLF可显著阻断上述现象(P<0.05)。f MLP可以上调BV-2细胞中FPR1的表达(P<0.05),并且显著活化胞内ERK信号通路,上调p-ERK蛋白的表达水平(P<0.05),Boc-MLF又可显著抑制上述改变(P<0.05)。结论 BV-2细胞表达FPR1,且FPR1在促进BV-2细胞迁移中具有重要作用。
引用
收藏
页码:44 / 49
页数:6
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