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[Giardia canis virus transfection vector-mediated expression of green fluorescent protein in the parasite]. | LitMetric

[Giardia canis virus transfection vector-mediated expression of green fluorescent protein in the parasite].

Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi

College of Animal Science and Veterinary Medicine, Jilin University, Changchun 130062, China.

Published: February 2007

AI Article Synopsis

Article Abstract

Objective: To construct Giardia canis virus (GCV) transfection vector.

Methods: According to transcriptional start site, replication origin and packaging site of GCV genome (DQ238861), a system was developed for the expression of a foreign gene in this organism by flanking the green fluorescent protein (GFP) gene with the fragments of GCV positive-strand RNA. The transcript of the construct was synthesized in vitro with T7 RNA polymerase and used to transfect GCV-infected trophozoites by electroporation.

Results: The recombinant plasmid pGCV634/GFP/GCV2174 was constructed. The expression of green fluorescent protein mediated by GCV transfection vector in Giardia canis peaked at 1 d after electroporation (A490=1.8), and slowly decreased until 14 d post-transfection.

Conclusion: The engineered GCV vector can be successfully used to introduce and efficiently express a heterologous gene in the eukaryotic microorganism.

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