雏鹅新型病毒性肠炎病毒强毒致鸭胚成纤维细胞凋亡初探  

Preliminary Study on Apoptosis of DEF Cells Induced by New type gosling viral enteritis virus (NGVEV) Infection

作　　者：陈舜[1] 程安春[1,2] 汪铭书[1,2] 周毅[1] 

机构地区：[1]四川农业大学动物医学院禽病防治研究中心,四川雅安625014 [2]四川农业大学动物医学院动物疫病与人类健康四川省重点实验室,四川雅安625014

出　　处：《病毒学报》2008年第5期396-400,共5页Chinese Journal of Virology

基　　金：国家自然科学基金(39970561);国家科技攻关重大项目(2004BA901A03);教育部"新世纪优秀人才支持计划"项目(NCET-04-0906/NCET-06-0818);四川省重点建设学科项目(SZD0418)

摘　　要：The characteristics changes of apoptosis of Duck Embryo Fibroblasts(DEF)cells induced by New type gosling viral enteritis virus,NGVEV)were observed by means of HE staining,electron microscopy and Annexin V-FITC/PI fluorescent staining.During 24-48 h post infection(pi),the difference of morphological change between infected DEF cells and the mock infected cells was invisible.At 72 h pi,the nuclear chromatin was getting condensed through HE staining;apoptotic morphological change such as abnormal shape of the nucleus,condensation of the cytoplasm and chromatin were observed under electron microscope;and the early apoptotic cells(Annexin V-FITC positive and PI negative)were detected under fluorescence microscope.At 96-120 h pi,by means of HE staining and electron microscopy,the advanced morphological change of apoptosis such as formation of different kinds of apoptotic bodies,and shrink of the DEF cells and nucleus were detected;under fluorescence microscope the different stages of the apoptotic DEF can be easily distinguished:early apoptotic cells(Annexin V-FITC postive and pi negative),advanced or late apoptotic cells(both Annexin V-FITC and PI positive),necrosis cells or dead cells(Annexin V-FITC negative and PI positive).This investigation shows that NGVEV might induce apoptosis and form characteristic apoptotic morphological changes in the DEF cells.NGVEV inducement of apoptosis may be an important mechanism of efficient dissemination of virus progeny.The characteristics changes of apoptosis of Duck Embryo Fibroblasts （DEF） cells induced by New type gosling viral enteritis virus, NGVEV）were observed by means of HE staining, electron microscopy and Annexin V-FITC/PI fluorescent staining. During 24-48 h post infection （pi）, the difference of morphological change between infected DEF cells and the mock infected cells was invisible. At 72 h pi, the nuclear chromatin was getting condensed through HE staining; apoptotic morphological change such as abnormal shape of the nucleus, condensation of the cytoplasm and ehromatin were observed under electron microscope; and the early apoptotic cells （Annexin V-FITC positive and PI negative） were detected under fluorescence microscope. At 96-120 h pi, by means of HE staining and electron microscopy, the advanced morphological change of apoptosis such as formation of different kinds of apoptotic bodies, and shrink of the DEF cells and nucleus were detected; under fluorescence microscope the different stages of the apoptotic DEF can be easily distinguished： early apoptotic cells（Annexin V-FITC postive and pi negative）, advanced or late apoptotic cells （both Annexin V-FITC and PI positive）, necrosis cells or dead cells （Annexin V-FITC negative and PI positive）. This investigation shows that NGVEV might induce apoptosis and form characteristic apoptotic morphological changes in the DEF cells. NGVEV inducement of apoptosis may be an important mechanism of efficient dissemination of virus progeny.

关 键 词：新型病毒性肠炎病毒 胚成纤维细胞 细胞凋亡 鸭胚 雏鹅 强毒 形态学特征 

分 类 号：S858.33[农业科学—临床兽医学] S858.31[农业科学—兽医学]