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南京医科大学学报(自然科学版) 第41卷第7期
·970 · Journal of Nanjing Medical University(Natural Sciences) 2021年7月
·基础医学·
TLR/NF⁃κB 信号通路在甲基苯丙胺诱导的原代小胶质细胞炎
性反应中的作用
肖 逸 ,王胜婵 ,王易欣 ,臧松松 ,张 炜 1*
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1,2
3
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南京医科大学第一附属医院泌尿外科,江苏 南京 210029;南京医科大学附属逸夫医院泌尿外科,江苏 南京 211100;
1 2
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3 南京医科大学附属老年医院泌尿外科,江苏 南京 210024;南京医科大学公共卫生学院卫生毒理系,江苏 南京
211166
[摘 要] 目的:探讨Toll样受体(Toll like receptor,TLR)/核因子(nuclear factor,NF)⁃κB信号通路在甲基苯丙胺(methamphet⁃
amine,METH)引起原代小胶质细胞激活及炎性因子释放的作用。方法:分离培养原代小胶质细胞,免疫荧光法鉴定原代小胶
质细胞纯度。细胞予METH(300 μmol/L)染毒0 min、15 min、30 min、1 h、3 h、6 h、12 h和24 h,蛋白免疫印迹检测原代小胶质细
胞的激活情况及其NF⁃κB通路激活情况,real⁃time PCR检测炎性因子[肿瘤坏死因子⁃α(tumor necrosis factor⁃ α,TNF⁃α)、白介
素⁃1β(interleukin⁃1β,IL⁃1β)、白介素⁃6(interleukin⁃6,IL⁃6)]和TLR1~9、11 mRNA的表达。结果:分离出的原代小胶质细胞纯
度达到95%以上。METH暴露后原代小胶质细胞激活,其激活标志物IBA⁃1水平增高,NF⁃κB通路被激活,炎性因子(TNF⁃α、IL
⁃1β、IL⁃6)和 TLR2、4~5、7~9、11 的 mRNA 水平明显升高,TLR1 的 mRNA 水平明显降低,差异具有统计学意义(P < 0.05)。结
论:METH可通过调节TLR/NF⁃κB信号通路激活原代小胶质细胞并促进其释放炎性因子,因而TLR可作为METH神经炎性反
应干预的潜在靶点,具有一定的治疗意义。
[关键词] 甲基苯丙胺;原代小胶质细胞;TLR/NF⁃κB信号通路
[中图分类号] R114 [文献标志码] A [文章编号] 1007⁃4368(2021)07⁃970⁃06
doi:10.7655/NYDXBNS20210706
Role of TLR/NF ⁃ κB signaling pathway in methamphetamine ⁃ induced primary microglial
inflammation
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XIAO Yi ,WANG Shengchan ,WANG Yixin ,ZANG Songsong ,ZHANG Wei 1*
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1 Department of Urology,the First Affiliated Hospital of Nanjing Medical University,Nanjing 210029;Department of
Urology,Sir Run Run Hospital,Nanjing Medical University,Nanjing 211100;Department of Urology,Geriatric
3
Hospital of Nanjing Medical University,Nanjing 210024;Department of Toxicology,School of Public Health,
4
Nanjing Medical University,Nanjing 211166,China
[Abstract] Objective:To investigate the role of Toll⁃like receptor(TLR)/NF⁃κB signaling pathway in methamphetamine(METH)⁃
induced primary microglial activation and inflammatory reaction. Methods:Primary microglial cells were isolated and cultured,then
the purity of primary microglia was detected by immunofluorescence. Cells were treated with METH(300 μmol/L)for 0 min,15 min,
30 min,1 h,3 h,6 h,12 h,and 24 h,and the activations of primary microglia and NF⁃κB pathway were detected by Western blot. The
inflammatory factors(TNF⁃α,IL⁃1β,and IL⁃6)and TLR1⁃9,11 mRNA levels were detected by real⁃time PCR. Results:The purity of
primary microglial cells was above 95%. After exposure to METH,the primary microglia activation marker IBA⁃1 was increased and
the NF⁃κB pathway was activated. In addition,the mRNA levels of inflammatory factors(TNF⁃α,IL⁃1β,IL⁃6)and TLR2,4⁃5,7⁃9,11
were significantly increased(P < 0.05),while the level of TLR1 mRNA was significantly reduced. Conclusion:METH can activate
primary microglial cells and promote the release of inflammatory factors by regulating the TLR/NF⁃κB signaling pathway. Therefore,
TLR can be potential targets for METH neuritis response intervention with certain therapeutic significance.
[Key words] methamphetamine;primary microglia;TLR/NF⁃κB signaling pathway
[J Nanjing Med Univ,2021,41(07):970⁃975]
[基金项目] 国家自然科学基金(81673213)
∗
通信作者(Corresponding author),E⁃mail:jsphzhangwei@163.com