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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Stobie, L. Prussin, C. Seder, R. A. Glaichenhaus, N. Wu, C. Y. Sacks, D. L. Gurunathan, S. |
| Description | Author Affiliation: Stobie L ( Clinical Immunology Section, Laboratory of Clinical Investigation, Howard Hughes Medical Institute, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.); |
| Abstract | IL-12 plays a central role in both the induction and magnitude of a primary Th1 response. A critical question in designing vaccines for diseases requiring Th1 immunity such as Mycobacterium tuberculosis and Leishmania major is the requirements to sustain memory/effector Th1 cells in vivo. This report examines the role of IL-12 and antigen in sustaining Th1 responses sufficient for protective immunity to L. major after vaccination with LACK protein (LP) plus rIL-12 and LACK DNA. It shows that, after initial vaccination with LP plus rIL-12, supplemental boosting with either LP or rIL-12 is necessary but not sufficient to fully sustain long-term Th1 immunity. Moreover, endogenous IL-12 is also shown to be required for the induction, maintenance, and effector phase of the Th1 response after LACK DNA vaccination. Finally, IL-12 is required to sustain Th1 cells and control parasite growth in susceptible and resistant strains of mice during primary and secondary infection. Taken together, these data show that IL-12 is essential to sustain a sufficient number of memory/effector Th1 cells generated in vivo to mediate long-term protection to an intracellular pathogen. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 15 |
| Volume Number | 97 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2000-08-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Antigens, Protozoan Immunology Immunologic Memory Interleukin-12 Leishmania Major Leishmaniasis, Cutaneous Prevention & Control Protozoan Proteins Protozoan Vaccines Th1 Cells Vaccines, DNA Animals Antigens, CD4 Genetics Immunity, Innate Mice Mice, Inbred BALB C Mice, Inbred C57BL Mice, Knockout Time Factors Vaccination Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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