Objectives: Human papillomavirus (HPV) type 58 is the second most prevalent virus infection among Chinese women. To develop an HPV58 vaccine that combines both prophylactic and therapeutic functions, we generate a chimeric virus-like particle (cVLP). Methods: The cVLPs contain both whole length L1 and parts of E7 peptides either from E7 amino acids (aa) 50 to aa72 or from E7 aa4 to aa12. The HPV58 L1-E7(aa50) (72) and L1-E7(aa4-12) fusion proteins were revealed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and confirmed by Western blot (Supplementary Digital Content 1, http://links.lww.com/IGC/A40, which shows alignment of the protein sequence between HPV58 L1-E7(aa50-72/4-12) and standard sequence). Protein folding and location of cVLPs were identified by transmission electron microscope. The immunogenicity of the fusion protein was tested by enzyme-linked immunospot assay. Results: Transmission electron microscope showed that the fusion protein formed cVLPs by self-assembly and the majority of particles located in the nucleus of the sf-9 insect cells. The cVLPs displayed a strong ability to agglutinate erythrocytes, which is distinguished from the parental VLPs. In addition, the purified HPV58 L1-E7(aa50-72) or L1-E7(aa4-12) fusion protein induced significant numbers of interferon gamma-expressing E7(aa50-72)(-) or E7(aa4-12)(-) specific CD8(+) T cells. Discussion: Our results indicate that the insertion of the E7(aa50-72) or E7(aa4-12) peptides behind L1 did not disrupt the assembly of cVLPs and provided potent immunogenicity and bioactivity, which created a powerful basis for further preparations of HPV58 vaccines with prophylactic and therapeutic effects for the treatment of HPV58-related diseases including cervical cancer.
基金:
National Natural Science Foundation of China [30672227, 30600667, 30901586, 30973205]; Major Innovation Medicine program [2009ZX09103-738, 2009ZX09103-739]; "973" Program of China [2009CB521800]
第一作者单位:[1]Huazhong Univ Sci & Technol,Tongji Med Coll,Tongji Hosp,Canc Biol Res Ctr,Wuhan 430030,Hubei,Peoples R China
通讯作者:
推荐引用方式(GB/T 7714):
Deng Dongrui,Liao Shujie,Bai Xiangyang,et al.The Preparation of Human Papillomavirus Type 58 Vaccine and Exploring Its Biological Activity and Immunogenicity In Vitro[J].INTERNATIONAL JOURNAL OF GYNECOLOGICAL CANCER.2011,21(6):988-995.doi:10.1097/IGC.0b013e31821dc8e5.
APA:
Deng, Dongrui,Liao, Shujie,Bai, Xiangyang,Wang, Wei,Sima, Ni...&Ma, Ding.(2011).The Preparation of Human Papillomavirus Type 58 Vaccine and Exploring Its Biological Activity and Immunogenicity In Vitro.INTERNATIONAL JOURNAL OF GYNECOLOGICAL CANCER,21,(6)
MLA:
Deng, Dongrui,et al."The Preparation of Human Papillomavirus Type 58 Vaccine and Exploring Its Biological Activity and Immunogenicity In Vitro".INTERNATIONAL JOURNAL OF GYNECOLOGICAL CANCER 21..6(2011):988-995