不同逆转录载体系统应用于水牛胎儿成纤维细胞转基因的探索

采用2种不同的逆转录病毒载体系统(pMX和pMSCV),构建携带绿色荧光蛋白(EGFP)基因的重组载体,探索能高效感染水牛胎儿成纤维细胞( BFFs)的病毒系统和感染方法。结果发现,2种逆转录病毒系统包装出的重组病毒滴度都能达到106,将pMX病毒系统生产的重组病毒经超速离心浓缩后,滴度可达到107;2种重组病毒都能感染BFFs,但pMX系统比pMSCV系统更能有效地感染BFFs;通过对病毒的感染方式进行比较,发现使用新鲜病毒连续感染BFFs 2次(每次间隔12 h),或者经过超速离心浓缩后的病毒感染BFFs 1次,可以显著提高感染效率。...

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Published in华南农业大学学报 Vol. 34; no. 4; pp. 558 - 563
Main Author 邓彦飞 刘真真 李云芳 刘庆友 罗婵 杨素芳 石德顺
Format Journal Article
LanguageChinese
Published 广西大学亚热带农业生物资源保护与利用国家重点实验室,广西南宁,530005 2013
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ISSN1001-411X

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Summary:采用2种不同的逆转录病毒载体系统(pMX和pMSCV),构建携带绿色荧光蛋白(EGFP)基因的重组载体,探索能高效感染水牛胎儿成纤维细胞( BFFs)的病毒系统和感染方法。结果发现,2种逆转录病毒系统包装出的重组病毒滴度都能达到106,将pMX病毒系统生产的重组病毒经超速离心浓缩后,滴度可达到107;2种重组病毒都能感染BFFs,但pMX系统比pMSCV系统更能有效地感染BFFs;通过对病毒的感染方式进行比较,发现使用新鲜病毒连续感染BFFs 2次(每次间隔12 h),或者经过超速离心浓缩后的病毒感染BFFs 1次,可以显著提高感染效率。
Bibliography:retroviral vector; transgene; buffalo; fetal fibroblast
44-1110/S
DENG Yanfei, LIU Zhenzhen, LI Yunfang, LIU Qingyou, LUO Chan, YANG Sufang, SHI Deshun ( State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning 530005, China)
After two retroviral systems with enhanced green fluorescent protein ( EGFP) report gene were constructed in this study , the retroviral systems and the infection method suitable for buffalo fetal fibro-blasts (BFFs) were investigated.The results revealed that the retrovirus titer of the two systems was 106, and the titer of the pMX system could be up to 10 7 after ultracentrifugation concentration .The infection efficiency of pMX retroviral system was higher than that of the pMSCV retroviral system .Using the fresh retrovirus infected BFFs twice (12 h interval) or ultracentrifugal retrovirus infected BFFs once could im-prove the infection efficiency .
ISSN:1001-411X