Background: To obtain human papillomavirus type 16(HPV 16) major capsid protein L1 with baculovirus expression system.
Methods: Using pFb1 as a vector,a recombinant baculovirus expressing plasmid,which contains HPV16L1 gene sequence,was generated. The constructed virus was infected into an insect cell line Sf9.
Results: After incubating at 27 degrees for 72 hours, the infected cells were collected and total cellular poteins were extracted. SDS-PAGE assay revealed a roughly 56 000 expressed protein and Western blot confirmed that the expressed protein arose from HPV16L1.
Conclusions: HPV16 later protein L1 could be efficiently expressed with baculovirus expression system,and the expressed L1 protein remains to have good immunoreactivity. This study may supply a basic work for preparing virus-like particle and prophylactic HPV subunit vaccines.
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