摘要
目的探讨异源动物蓝舌病毒dsRNA诱导人源细胞产生干扰素(IFN)的能力。方法借助体外培养系统,利用ELISA技术检测IFN诱导剂多聚次黄苷酸-胞苷酸(PolyI:C)、蓝舌病毒(BTV)及BTV dsRNA3种不同处理因素作用后,培养细胞上清液中IFN-β的含量,以比较研究其诱导人肺癌细胞A549和人胚肺细胞HEL产生IFN-β的能力和特征。结果这3种因子均能诱导人肺癌A549细胞和人正常肺细胞HEL产生IFN-β,BTVdsRNA诱导IFN-β产生的能力显著高于PolyI:C和BTV。浓度高的BTVdsRNA诱导细胞产生的IFN-β水平高,说明二者之间存在剂量依赖性。BTVdsRNA对不同性质的人源细胞(人肺癌A549细胞、人正常肺细胞HEL)具有不同的诱导产生IFN-β的能力,诱导人正常肺细胞HEL产生IFN-β的能力显著地高于诱导人肺癌细胞A549产生IFN-β的能力(P〈0.05)。结论裸露的BTVdsRNA分子能有效地诱导人源细胞产生IFN-β;结合BTV和dsRNA对人的安全性以及人类正在努力寻找新的内源性IFN诱导剂的事实,可以推断BTV dsRNA具有发展成内源性IFN诱导剂之潜能。
Objective To investigate the capabihty of bluetongue virus (BTV) dsRNA inducing IFN-β from human cells. Methods Artificial complex interferon inducer polyinosinic-polycytidylic acid ( PolyI: C), BTV and BTV dsRNA were added to A549 ( human lung cancer cell) and HEL ( human lung normal cells) culture system in different concentrations. IFN-β in culture median was detected by ELISA. Results Though all of the 3 reagents could induce IFN-β, BTV dsRNA significantly induced the highest level of IFN-β. The production of IFN-β was induced by BTV dsRNA in dose dependence. BTV dsRNA induced IFN-β level from HEL was higher than that from A.549 (P 〈 0.05 ). Conclusion BTV dsRNA can induce IFN-β from human cells effectively, which shows its potential of an endogenous IFN-β inducer.
出处
《中华微生物学和免疫学杂志》
CAS
CSCD
北大核心
2008年第3期217-220,共4页
Chinese Journal of Microbiology and Immunology
基金
国家自然科学基金(30271471)
湖北省卫生厅科研基金重点项目(301140507)