[目的]探讨纳米银(silver nanoparticles,silver-nps)在体外抗腺病毒3型(adenovirus type 3,ADV3)的作用机制。[方法]采用细胞培养方法和免疫荧光方法,观察纳米银对ADV3子代病毒体生成的抑制作用、对ADV3侵入细胞的阻断作用及直接灭活作用,同时用透射电镜、PCR方法观察体外纳米银对ADV3病毒体及其DNA的破坏作用。[结果]纳米银在Hela细胞上最大无毒浓度(TC0)为52.48μg/mL;ADV3在Hela细胞上的半数感染浓度(TCID50)为10-2.74/100μL;最大无毒剂量范围内,50μg/mL的纳米银和等体积100TCID50ADV3分别以杀病毒、抗病毒、直接灭活病毒三种不同方式作用Hela细胞,细胞存活率分别为(93.58±1.79)%,(90.50±1.99)%和(95.38±2.98)%,而100TCID50 ADV3感染Hela细胞后,测得细胞存活率为(31.92±2.86)%,两者相比差异有显著性意义(P<0.01)。免疫荧光显示,与腺病毒对照组形成的强特异性荧光相比,三种途径作用于Hela细胞后各组的特异性荧光颗粒均减少;电镜显示,...
【英文摘要】
[Objective] To explore the inhibitory effects and possible mechanism of silver nanoparticles(silver-nps) on adenovirus type 3(ADV3).[Methods] Cell culture and immuno fluorescence assay were applied to evaluate the anti-adenovirus activities of silver-nps in inhibiting the formation of ADV3 progeny virions,blocking and inactivating ADV3.The anti-adenovirus activities of silver-nps on Hela cells were observed by transmission electron microscopy.The PCR method was also used to analyze the destructive effect of...