Colti病毒的分离及其生物学性状  

Isolation of coltivirus from mosquitoes in Beijing and it's biological characteristics

作　　者：陶三菊[1] 何英[1] 陈伯权[1] 赵子江[1] 王焕琴[1] 杨冬荣[1] 刘琴芝[1] 

机构地区：[1]中国预防医学科学院病毒学研究所

出　　处：《中华实验和临床病毒学杂志》1997年第4期363-365,共3页Chinese Journal of Experimental and Clinical Virology

摘　　要：１９９４年夏秋季从北京郊区采集的蚊子中分离到两株Ｃｏｌｔｉ病毒（北京９５－７０和北京９５－７５）。病毒在Ｃ６／３６细胞引起明显的细胞病变，但在ＢＨＫ－２１和Ｖｅｒｏ细胞未见明显病变。对５’－碘脱氧尿苷和乙醚抵抗，表明为无包膜ＲＮＡ病毒；对酸敏感，在ｐＨ３．０条件下病毒滴度降低３．５～４．５个对数以上。聚丙烯酰胺凝胶电泳显示病毒基因组为１２节段ＲＮＡ，两株病毒的电泳带型完全相同，与１９９１年分离的Ｃｏｌｔｉ病毒ＴＲＴ２株带型基本一致，皆为６－６带型，但仔细比较至少有８条带的迁移率存在着细微差别。组织培养交叉中和试验表明，新分离株与ＴＲＴ２株的抗原性未见明显差异，可能属同一血清型。病毒在Ｃ６／３６细胞繁殖可能造成持续感染。Two strains (Beijing 95-70 and 95-75) of coltivirus were isolated from mosquitoes collected in Beijing during summerautumn in 1994. The viruses caused cytopathogenic effect on C6/36 cells but not on BHK-21 and Vero cells, and were not lethal for new born mice and three week old mice. The isolates were resistant to 5'-IdU and ether, but sensitive to acid pH3.0. There were 12 segments RNA shown by polyacrylamide gel electrophoresis (PAGE) and PAGE profile of the two isolates were similar (6-6). The PAGE profile was also similar to that of the TRT2 strain isolated in 1991, but there were at least 8 segments slightly different between the new isolates and TRT2 in band migration distance. Tissue culture crossneutralization test showed that the new isolates were antigenically related to TRT2 strain identified as coltivirus. Growth curve of the two isolates on C6/36 cells showed that virus titer began to rise at the first day after infection and continued to increase up to 7.0 Log TCID50 per 0.1ml and maintained a high level until the 21st day after infection. It seems that the virus may cause persistent infection on C6/36 cell.

关 键 词：COLTI病毒 呼肠病毒科/分离 蚊/病毒学 RNA.病毒 

分 类 号：R373.3[医药卫生—病原生物学]