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香烟烟雾凝集物对BEAS-2B细胞损伤作用及对IL-8表达的影响 被引量:1

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摘要 目的探讨香烟烟雾凝集物(cigarette smoke extracts,CSE)对人支气管上皮BEAS-2B细胞的损害作用和对细胞炎症因子IL-8表达的影响。方法 CSE原液的制备参照Su Y的方法并改良;利用MTT比色法研究CSE对BEAS-2B细胞的抑制作用;通过荧光定量PCR分析不同浓度CSE处理后细胞IL-8 mRNA水平的变化。结果 CSE处理后的BEAS-2B贴壁细胞形态变得不规则,细胞回缩变圆,显示低活力或死亡形态;MTT结果表明CSE对BEAS-2B细胞的生长有显著的抑制作用(P<0.001),且随着药物浓度的增加,CSE对细胞的抑制作用增强,呈剂量-效应关系;CSE暴露BEAS-2B细胞后可导致IL-8 mRNA表达增加(P<0.001)。低浓度(2.5%、5.0%和7.5%)的CSE刺激增加IL-8mRNA的表达(P<0.001),且呈浓度依赖型;10.0%CSE处理组大量细胞死亡,其IL-8 mRNA表达量与无CSE处理组间差异无统计学意义(P>0.05)。结论 CSE对支气管上皮BEAS-2B细胞有细胞毒性。低浓度的CSE引起BEAS-2B细胞IL-8 mRNA表达增加,且呈剂量依赖型;高浓度的CSE作用后其IL-8 mRNA的表达没有明显改变。
出处 《毒理学杂志》 CAS CSCD 北大核心 2011年第3期199-202,共4页 Journal of Toxicology
基金 河南省科技攻关项目(82102310007)
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