Aim: To express the glycoprotein G2 and amino terminal of nucleoprotein (NP) of Hantaan virus in Bac-to-Bac baculovirus expression system in the form of fusion protein.
Methods: The recombinant baculovirus expression vector pFBDHTa-G2S 0.7 was constructed. The chimeric gene was inserted into bacmid in E.coli DH10Bac with the help of Tn7 transposition system. Then the recombinant baculovirus was screened and the fusion protein was expressed in insect cells. The expression product was detected by ELISA, immunofluorescence assay and Western blot analysis.
Results: The recombinant baculovirus containing the chimeric gene G2S 0.7 had been constructed successfully and the fusion protein could be expressed in insect cells. The expressed protein could be recognized by the Hantaan virus NP-specific mAb and glycoprotein G2-specific mAb.
Conclusion: The successful expression of fusion protein G2S 0.7 with biological activity in insect cells lays the foundation for further research on its immunological characteristic.