Expression of HPV16 L1 protein in insect cell suspension culture system
Han, C.; Wang, Y.; Shang, Q.-l.; Wei, L.-l.; Chen, S.-j.
Zhonghua Shi Yan he Lin Chuang Bing du Xue Za Zhi 21(4): 352-354
2007
ISSN/ISBN: 1003-9279 PMID: 18322600 Document Number: 606584
To express the L1 protein of human papillomavirus type 16 (HPV16) in insect cell suspension culture system. Optimized the conditions of suspension culture, recombinant virus amplification and protein expression. Determined the virus tilter by plague analysis and detected the target protein by SDS-PAGE and Western blot; The formation of VLPs by HPV16 L1 protein was observed with TEM. The Sf9 cells could grow better in suspension culture with seeding density of 5 x 10-5 cell/mL and the maximum expression quantity was obtained by infection of cells with rBacV/HPV16L1 (MOI =10) and harvesting after 72-84 h. HPV16L1 protein could assemble into VLPs in Sf9 cells observed with TEM. The conditions of cell culture, virus amplification and protein expression were optimized. HPV16 L1 protein could assemble into VLPs in Sf9 cells, which would provide a foundation for further study of the vaccine and diagnosis kits.