A Prime-Boost Strategy Using Virus-Like Particles Pseudotyped for HCV Proteins Triggers Broadly Neutralizing Antibodies in Macaques

作者：Garrone Pierre; Fluckiger Anne Catherine; Mangeot Philippe E; Gauthier Emmanuel; Dupeyrot Lacas Pia; Mancip Jimmy; Cangialosi Arnaud; Du Chene Isaure; LeGrand Roger; Mangeot Isabelle; Lavillette Dimitri; Bellier Bertrand; Cosset Francois Loic; Tangy Frederic; Klatzmann David^*; Dalba Charlotte

来源：Science Translational Medicine, 2011, 3(94): 94ra71.

DOI：10.1126/scitranslmed.3002330

Chronic hepatitis C virus (HCV) infection, with its cohort of life-threatening complications, affects more than 200 million persons worldwide and has a prevalence of more than 10% in certain countries. Preventive and therapeutic vaccines against HCV are thus much needed. Neutralizing antibodies (NAbs) are the foundation for successful disease prevention for most established vaccines. However, for viruses that cause chronic infection such as HIV or HCV, induction of broad NAbs from recombinant vaccines has remained elusive. We developed a vaccine platform specifically aimed at inducing NAbs based on pseudotyped virus-like particles (VLPs) made with retroviral Gag. We report that VLPs pseudotyped with E2 and/or E1 HCV envelope glycoproteins induced high-titer anti-E2 and/or anti-E1 antibodies, as well as NAbs, in both mouse and macaque. The NAbs, which were raised against HCV 1a, cross-neutralized the five other genotypes tested (1b, 2a, 2b, 4, and 5). Thus, the described VLP platform, which can be pseudotyped with a vast array of virus envelope glycoproteins, represents a new approach to viral vaccine development.

• 出版日期2011-8-3
• 单位中国地震局