Construction and identification of a vector expressing TRAM siRNA in mammalian cells

摘要

Objective: To construct and identify a vector expressing TRAM siRNA in mammalian cells. Methods: It was constructed that the vector named R-pSUPER-EGFP used to transcribe functional TRAM siRNA. Two of pair 64 nt TRAM gene specific target sequences were inserted into the downstream of the H1 promoter. The recombinants were transformed into E. coli JM109, and finally their veracity was confirmed by double cutting with the enzymes and sequencing. R-pSUPER-EGFP was transfected into RAW264.7 cell by using Lipofectamine™ 2000, and the expression of TRAM was detected by Western blotting. Results: Two different recombinant plasmids containing corresponding TRAM gene specific target sequences were constructed, transfected into RAW264.7 cell line successively, which can specifically restrain expression of TRAM protein. Conclusion: The optimizing method in constructing the recombinant vector serves other plasmid-based RNA interference research. Therefore, the recombinant vectors establish the basis for research on the function of TRAM gene.