Construction of GFP-AWP1 fusion gene vector and its expression in 293 cells]

OBJECTIVE: To construct green fluorescent protein (GFP)-AWP1 (a novel human protein associated with protein kinase C-related kinase 1) fusion gene vector for observing the expression and localization of AWP1 in 293 cells. METHODS: The coding region in AWP1 cDNA was amplified by RT-PCR from human endothelial cell line ECV304 and recombined into pEGFP-C2 plasmid expressing GFP. After identification with restriction endonucleases and sequence analysis, the recombinant plasmid was transfected into 293 cells with the cationic liposome DOTAP as the transfection reagent. The expression and localization of AWP1 were observed under a fluorescence microscope. RESULTS: Restriction endonuclease assay and sequence analysis verified the successful construction of the recombinant vector pEGFP-C2/AWP1, and GFP-AWP1 fusion protein was highly efficiently expressed in 293 cells. Under fluorescent microscope, green fluorescence was seen homogeneously distributed in the entire cell body of the cells transfected by the empty vector pEGFP-C2, but diffusely in the cytoplasm of the cells transfected by the recombinant vector pEGFP-C2/AWP1. CONCLUSION: GFP-AWP1 fusion gene vector is successfully constructed and the fusion protein expressed in the cytoplasm of 293 cells.