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A Neonatal Fc Receptor-Targeted Mucosal Vaccine Strategy Effectively Induces HIV-1 Antigen-Specific Immunity to Genital Infection
- Source :
- Journal of Virology. 85:10542-10553
- Publication Year :
- 2011
- Publisher :
- American Society for Microbiology, 2011.
-
Abstract
- Strategies to prevent the sexual transmission of HIV include vaccines that elicit durable, protective mucosal immune responses. A key to effective mucosal immunity is the capacity for antigens administered locally to cross epithelial barriers. Given the role of neonatal Fc receptor (FcRn) in transferring IgG across polarized epithelial cells which line mucosal surfaces, FcRn might be useful for delivering HIV vaccine antigens across mucosal epithelial barriers to the underlying antigen-presenting cells. Chimeric proteins composed of HIV Gag (p24) fused to the Fc region of IgG (Gag-Fc) bind efficiently to airway mucosa and are transported across this epithelial surface. Mice immunized intranasally with Gag-Fc plus CpG adjuvant developed local and systemic immunity, including durable B and T cell memory. Gag-specific immunity was sufficiently potent to protect against an intravaginal challenge with recombinant vaccinia virus expressing the HIV Gag protein. Intranasal administration of a Gag-Fc/CpG vaccine protected at a distal mucosal site. Our data suggest that targeting of FcRn with chimeric immunogens may be an important strategy for mucosal immunization and should be considered a new approach for preventive HIV vaccines.
- Subjects :
- Sexual transmission
CpG Oligodeoxynucleotide
Recombinant Fusion Proteins
T-Lymphocytes
T cell
Immunology
HIV Core Protein p24
HIV Infections
Receptors, Fc
Biology
Microbiology
Mice
Neonatal Fc receptor
Adjuvants, Immunologic
Antigen
Immunity
Virology
Vaccines and Antiviral Agents
medicine
Animals
HIV vaccine
Administration, Intranasal
AIDS Vaccines
B-Lymphocytes
Vaccines, Synthetic
Histocompatibility Antigens Class I
Group-specific antigen
Immunoglobulin Fc Fragments
Mice, Inbred C57BL
medicine.anatomical_structure
Oligodeoxyribonucleotides
Insect Science
Female
Immunologic Memory
Subjects
Details
- ISSN :
- 10985514 and 0022538X
- Volume :
- 85
- Database :
- OpenAIRE
- Journal :
- Journal of Virology
- Accession number :
- edsair.doi.dedup.....bf9306974cc11eae1a470f89e82fbcbf