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Ag85B-ESAT-6 adjuvanted with IC31® promotes strong and long-lived Mycobacterium tuberculosis specific T cell responses in volunteers with previous BCG vaccination or tuberculosis infection.
- Source :
-
Vaccine [Vaccine] 2011 Mar 03; Vol. 29 (11), pp. 2100-9. Date of Electronic Publication: 2011 Jan 20. - Publication Year :
- 2011
-
Abstract
- New TB vaccines are urgently needed because of the apparent lack of effect of the BCG vaccine on rates of adult contagious pulmonary tuberculosis and the risk of disseminated BCG disease in immunocompromised individuals. Since BCG appears to protect children, the primary target for vaccine development is a booster vaccine for adults but such vaccines ideally need to be able to efficiently prime mycobacterially naïve individuals as well as boost individuals previously vaccinated with BCG and those latently infected with TB. Protective immunity against Mycobacterium tuberculosis depends mainly on the generation of a Th1-type cellular immune response characterized by interferon-gamma (IFN-γ) production. In the present study, we monitored safety and IFN-γ responses in healthy BCG-vaccinated and prior or latently TB-infected individuals receiving a novel vaccine composed of the fusion protein Ag85B-ESAT-6 combined with the adjuvant IC31(®), administered at 0 and 2 months. Vaccination caused few local or systemic adverse effects besides transient soreness at the injection site, but it elicited strong antigen-specific T cell responses against Ag85B-ESAT-6 and both the Ag85B and ESAT-6 components, that could be augmented by second vaccination. The strong responses persisted through 32 weeks of follow-up, indicating the induction of a persistent memory response in the vaccine recipients.<br /> (Copyright © 2011 Elsevier Ltd. All rights reserved.)
- Subjects :
- Adult
Antibodies, Bacterial blood
BCG Vaccine administration & dosage
Drug Combinations
Female
Humans
Immunity, Cellular
Immunization, Secondary
Immunoglobulin G blood
Immunologic Memory
Interferon-gamma immunology
Latent Tuberculosis immunology
Latent Tuberculosis therapy
Male
Middle Aged
Mycobacterium tuberculosis immunology
Tuberculosis immunology
Tuberculosis Vaccines administration & dosage
Tuberculosis Vaccines adverse effects
Young Adult
Oligodeoxyribonucleotides pharmacology
Oligopeptides pharmacology
Recombinant Fusion Proteins immunology
T-Lymphocytes immunology
Tuberculosis prevention & control
Tuberculosis Vaccines immunology
Subjects
Details
- Language :
- English
- ISSN :
- 1873-2518
- Volume :
- 29
- Issue :
- 11
- Database :
- MEDLINE
- Journal :
- Vaccine
- Publication Type :
- Academic Journal
- Accession number :
- 21256189
- Full Text :
- https://doi.org/10.1016/j.vaccine.2010.12.135