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论文摘要

脾络氨酸激酶-核因子κB调控口腔癌相关巨噬细胞中癌痛相关环氧化酶2的机制研究

In vitro investigation on the mechanism of cyclooxygenase-2 upregulation induced by spleen tyrosine kinase-nuclear factor κB signaling in cancer pain caused by oral cancer-associated macrophag

作者:林洁 王淼 吉阳 刘乐 高攀 李春洁

Author:Lin Jie, Wang Miao, Ji Yang, Liu Le, Gao Pan, Li Chunjie.

收稿日期:2016-03-16          年卷(期)页码:2016,34(5):454-454-458

期刊名称:华西口腔医学杂志

Journal Name:West China Journal of Stomatology

关键字:癌痛,口腔癌,环氧化酶2,巨噬细胞,

Key words:cancer pain,mouth neoplasm,cyclooxy- genase-2,macrophage,

基金项目:

2014年四川大学青年教师科研启动基金(2014SCU11032);2015年四川大学华西口腔医院青年科学研究基金(2015-06)

中文摘要

目的 通过体外原代巨噬细胞诱导以及分子生物学的方法,探究口腔癌相关巨噬细胞环氧化酶2(COX-2)上调的机制。方法 构建小鼠原代巨噬细胞,使用Cal27条件培养基(CM)刺激诱导形成口腔癌相关巨噬细胞,使用免疫荧光检测原代巨噬细胞的纯度。使用小分子抑制剂分别抑制脾络氨酸激酶(Syk)及核因子κB(NFκB)通路。使用实时定量聚合酶链反应(PCR)、Western blot检测COX-2及信号通路相关蛋白的变化。结果 所诱导的原代巨噬细胞均特异性表达CD68蛋白。Cal27 CM刺激能够显著提高COX-2的表达(P结论 Syk-NFκB信号通路导致COX-2在口腔癌相关的巨噬细胞中高表达,靶定该信号通路可能是控制口腔癌相关癌痛的新方向。

英文摘要

Objective This study explores the mechanism of cyclooxygenase-2 (COX-2) upregulation in oral cancers asso- ciated with macrophage by using molecular biology techniques and primary culture of murine macrophage.Methods Murine macrophage was induced by macrophage colony-stimulating factor (M-CSF) and Cal27 conditional medium (CM). Purity of the macrophage was detected through CD68 immunofluorescence staining. Inhibitors of spleen tyrosine kinase (Syk) and nuclear factor κB (NFκB) were used to inhibit these pathways. In addition, real-time polymerase chain reaction and Western blot analysis were used to detect alterations in COX-2 and pathway-related proteins.Results All of the induced cells specifically expressed CD68. Cal27 CM could significantly induce COX-2 expression (PConclusion Syk-NFκB is responsible for COX-2 overexpression in oral cancer associated with macrophages. Targeting this pathway is possibly a new approach to control oral cancer-related pain.

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