Liposome-encapsulated antigens induce a protective CTL response against Listeria monocytogenes independent of CD4+ T cell help |
| |
Authors: | Grenningloh R Darj A Bauer H zur Lage S Chakraborty T Jacobs T Weiss S |
| |
Affiliation: | Molecular Immunology, Helmholtz Centre for Infection Research, Braunschweig, Germany;;and Institute for Medical Microbiology, University of Giessen, Giessen, Germany |
| |
Abstract: | Protection against intracellular pathogens is usually mediated by cytotoxic T lymphocytes (CTL). Induction of a protective CTL response for vaccination purposes has proven difficult because of the limited access of protein antigens or attenuated pathogens to the MHC class I presentation pathway. We show here that pH-sensitive PE/CHEMS liposomes can be used as a vehicle to efficiently deliver intact proteins for presentation by MHC class I. Mice immunized with listerial proteins encapsulated in such liposomes launched a strong CTL response and were protected against a subsequent challenge with L. monocytogenes . Remarkably, the CTL response was induced independently of detectable CD4+ T cell help. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|