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| Content Provider | PubMed Central |
|---|---|
| Author | Mountford, Adrian P. Hogg, Karen G. Coulson, Patricia S. Frank, Brombacher |
| Editor | Petri, W. A. |
| Copyright Year | 2001 |
| Abstract | Although protective immunity in C57BL/6 mice induced by a single dose of the radiation-attenuated schistosome vaccine is believed to be mediated by Th1-type immune responses, we here report that in BALB/c mice protection can also depend upon signaling via the interleukin-4 (IL-4) receptor which conventionally governs the development of Th2-type immune responses. We show that in BALB/c mice deficient for the IL-4 receptor α chain (IL-4Rα−/−), which are unresponsive to IL-4 and IL-13, vaccine-induced protection is abrogated compared with that in wild-type (WT) mice. In vaccinated IL-4Rα−/− mice, IL-12p40 production by cells from the skin exposure site was elevated, although gamma interferon (IFN-γ) production in draining lymphoid tissues was similar in WT and IL-4Rα−/− mice. Nevertheless, the effector response in IL-4Rα−/− mice was Th1 biased with elevated IFN-γ in the lungs and higher immunoglobulin G2a (IgG2a) and IgG2b titers but negligible quantities of Th2-associated IgG1 and IgE. Interestingly, levels of IL-4 were equivalent in WT and IL-4Rα−/− mice, indicating that Th2 responses were not dependent upon signaling by IL-4 or IL-13. No differences in the phenotype and composition of the pulmonary effector mechanism that might explain the failure to induce protection in IL-4Rα−/− mice were detected. However, passive transfer of partial protection to naive IL-4Rα−/− mice, using serum from vaccinated WT mice, indicates that Th2-associated antibodies such as IgG1 have a role in parasite elimination in BALB/c strain mice and that signaling via IL-4R can be an important factor in the generation of protection. |
| Related Links | http://dx.doi.org/10.1128/iai.69.1.228-236.2001 |
| Ending Page | 236 |
| Page Count | 9 |
| Starting Page | 228 |
| File Format | |
| ISSN | 00199567 |
| e-ISSN | 10985522 |
| Journal | Infection and Immunity |
| Issue Number | 1 |
| Volume Number | 69 |
| Language | English |
| Publisher | American Society for Microbiology |
| Publisher Date | 2001-01-01 |
| Access Restriction | Open |
| Rights Holder | American Society for Microbiology |
| Subject Keyword | Immunology Microbiology Parasitology Infectious Diseases Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Infectious Diseases Parasitology Immunology Microbiology |
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