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伴放线放线杆菌脂多糖诱导下兔不同部位单核巨噬细胞细胞因子表达的差异 被引量:1

Different expression of cytokines induced by Actinobacillus actinomycetemcomitans lipopolysaccharide in monocytes/macrophages from different organs of rabbits
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摘要 目的探讨伴放线放线杆菌(Actinobacillus actinomycetemcomitans,Aa)脂多糖诱导兔不同部位的单核巨噬细胞细胞因子表达的差异,以期为研究牙周炎与全身疾病间可能的免疫机制提供理论基础。方法分离5只新西兰兔外周血单核巨噬细胞(peripheral mononuclearcells,Mo)、肺单核巨噬细胞(alveolar macrophages,AM)、腹腔单核巨噬细胞(peritonealmacrophages,PM)及肝脏单核巨噬细胞(Kupffer cells,KC),对每个部位的细胞分别用1mg/L大肠杆菌一脂多糖(大肠杆菌-脂多糖组)、Aa-脂多糖刺激(Aa-脂多糖组),以不加任何刺激的细胞为空白对照组,每组均为6个样本。24h后采用实时PCR及酶联免疫吸附测定法分别检测肿瘤坏死因子α(tumornecrosis factor-α,TNF-α)、白介素(interleukin,IL)6、IL-1β、IL-8mRNA及蛋白表达。结果新西兰兔各部位单核巨噬细胞大肠杆菌.脂多糖组及Aa-脂多糖组4种细胞因子mRNA及蛋白表达均显著高于空白对照组(P〈0.05),其中AM的Aa.脂多糖组TNF-α、IL-6、IL-1β、IL-8mRNA[分别为(0.4719±0.0171)、(2.7895±0.0669)、(5.1527±0.1190)、(3.6785±0.1836)]及蛋白[分别为(82.2±5.4)、(40.2±2.0)、(50308.3±445.0)、(35305.3±1480.9)ng/L]的相对表达均最强;Aa-脂多糖组4种细胞因子mRAN及蛋白表达均显著强于大肠杆菌-脂多糖组(P〈0.05);不同部位的单核巨噬细胞对Aa-脂多糖的反应存在部位差异性(P〈0.05),总体上从强至弱依次为AM、Mo、KC、PM。结论Aa-脂多糖对兔不同部位的单核巨噬细胞各细胞因子的表达存在影响,且这种影响具有部位差异性。 Objective To investigate the expression of cytokines induced by Actinobacillus actinomycetemcomitans lipopolysaccharide(Aa-LPS) in monocytes/macrophages from different organs of rabbits. Methods The peripheral mononuclear cells(Mo), alveolar macrophages ( AM ), peritoneal macrophages(PM) and Kupffer ceils(KC) from five New Zealand rabbits were isolated respectively. Then the ceils from different organs were stimulated with Escherichia coli (Ec)-LPS or Aa-LPS at the dose of 1 mg/L. After culture for 24 hours, the expression of tumor necrosis factor-α ( TNF-α), interleukin (IL) 6, IL-1β, IL-8 mRNA and protein were determined by real-time PCR and enzyme-linked immunosorbent assay respectively. Results The monocytes/macrophages challenged by Ec-LPS or Aa-LPS expressed more cytokines both in mRNA and protein levels compared with the controls ( P 〈 0. 05 ). Among them, AM displayed the highest respond when encount with Aa-LPS,with the TNF-α,IL-6 ,IL-1β, IL-8 mRNA relative levels were( 0.471 ± 0.0171), )2. 78.95 ± 0. 0669), (5. 1527 ± 0. 1190), ( 3. 6785 ± 0. 1836) and the proteins concentrations were ( 82. 2 ± 5.4 ), (40. 2± 2. 0 ), ( 50 308.3 ± 445.0 ), ( 35 305.3 ± 1480. 9 ) ng/L respectively. And the inducibility of Aa-LPS was stronger than that of Ec-LPS ( P 〈 0.05 ). Meanwhile thecells from different organs showed discrepant response when exposed to Aa-LPS ( P 〈 0. 05 ). The results showed their abilities to secrete cytokines were in the sequence of AM 〉 Mo 〉 KC 〉 PM. Conclusions Aa-LPS enfluenced the expression of cytokines in monocytes/macrophages from different organs of rabbits.
出处 《中华口腔医学杂志》 CAS CSCD 北大核心 2013年第3期155-160,共6页 Chinese Journal of Stomatology
基金 国家自然科学基金(30973326、81170973) 福建省医学创新及省卫生厅青年科研课题资助计划(2011-CX-26)
关键词 放线杆菌 伴放射菌 脂多糖 单核巨噬细胞系统 细胞因子类 Actinobacillus actinomycetemcomitans Lipopolysaccharides Mononuclearphagocyte Cytokines
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