title: Virus-like particle-based human vaccines: quality assessment based on structural and functional properties.
abstract: Human vaccines against three viruses use recombinant virus-like particles (VLPs) as the antigen: hepatitis B virus, human papillomavirus, and hepatitis E virus. VLPs are excellent prophylactic vaccine antigens because they are self-assembling bionanoparticles (20 to 60 nm in diameter) that expose multiple epitopes on their surface and faithfully mimic the native virions. Here we summarize the long journey of these vaccines from bench to patients. The physical properties and structural features of each recombinant VLP vaccine are described. With the recent licensure of Hecolin against hepatitis E virus adding a third disease indication to prophylactic VLP-based vaccines, we review how the crucial quality attributes of VLP-based human vaccines against all three disease indications were assessed, controlled, and improved during bioprocessing through an array of structural and functional analyses.
authors.affiliation: National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen, Fujian 361102, People's Republic of China. Electronic address: qinjian_zhao@xmu.edu.cn.
authors.forename: Qinjian
authors.initials: Q
authors.lastname: Zhao
authors.forename: Shaowei
authors.initials: S
authors.lastname: Li
authors.forename: Hai
authors.initials: H
authors.lastname: Yu
authors.forename: Ningshao
authors.initials: N
authors.lastname: Xia
authors.forename: Yorgo
authors.initials: Y
authors.lastname: Modis
mesh_terms: D017325:Hepatitis B Vaccines / Q000302:isolation & purification / Q000494:pharmacology*; D006801:Humans; D053918:Papillomavirus Vaccines / Q000302:isolation & purification / Q000494:pharmacology*; D013678:Technology, Pharmaceutical / Q000379:methods*; D064166:Vaccine Potency; D014614:Vaccines, Synthetic / Q000302:isolation & purification / Q000494:pharmacology*; D058425:Vaccines, Virus-Like Particle / Q000302:isolation & purification / Q000494:pharmacology* / Q000648:ultrastructure*; D014761:Viral Hepatitis Vaccines / Q000302:isolation & purification / Q000494:pharmacology*
chemical_list: D017325:Hepatitis B Vaccines; D053918:Papillomavirus Vaccines; D014614:Vaccines, Synthetic; D058425:Vaccines, Virus-Like Particle; D014761:Viral Hepatitis Vaccines; C577000:hecolin
keywords: bionanoparticle; comparability exercise; epitope mapping; neutralizing antibody; potency assay; subunit vaccine