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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Johnson, Brandi T. Sempowski, Gregory D. Gunn, Michael D. DeFranco, Anthony L. Staats, Herman F. Thompson, Afton L. Hou, Baidong |
| Description | Country affiliation: United States Author Affiliation: Thompson AL ( Department of Pathology, Duke University Medical Center, Durham, NC 27710, USA.) |
| Abstract | IL-1 has been shown to have strong mucosal adjuvant activities, but little is known about its mechanism of action. We vaccinated IL-1R1 bone marrow (BM) chimeric mice to determine whether IL-1R1 expression on stromal cells or hematopoietic cells was sufficient for the maximal adjuvant activity of nasally delivered IL-1 as determined by the acute induction of cytokine responses and induction of Bacillus anthracis lethal factor (LF)-specific adaptive immunity. Cytokine and chemokine responses induced by vaccination with IL-1 were predominantly derived from the stromal cell compartment and included G-CSF, IL-6, IL-13, MCP-1, and keratinocyte chemoattractant. Nasal vaccination of Il1r1(-/-) (knock-out [KO]) mice given wild-type (WT) BM (WTâ KO) and WTâ WT mice with LF + IL-1 induced maximal adaptive immune responses, whereas vaccination of WT mice given Il1r1(-/-) BM (KOâ WT) resulted in significantly decreased production of LF-specific serum IgG, IgG subclasses, lethal toxin-neutralizing Abs, and mucosal IgA compared with WTâ KO and WTâ WT mice (p < 0.05). IL-1 adjuvant activity was not dependent on mast cells. However, the ability of IL-1 to induce serum LF-specific IgG2c and lethal toxin-neutralizing Abs was significantly impaired in CD11c-Myd88(-/-) mice when compared with WT mice (p < 0.05). Our results suggest that CD11c(+) cells must be directly activated by nasally administered IL-1 for maximal adjuvant activity and that, although stromal cells are required for maximal adjuvant-induced cytokine production, the adjuvant-induced stromal cell cytokine responses are not required for effective induction of adaptive immunity. |
| ISSN | 00221767 |
| e-ISSN | 15506606 |
| DOI | 10.4049/jimmunol.1100254 |
| Journal | The Journal of Immunology |
| Issue Number | 6 |
| Volume Number | 188 |
| Language | English |
| Publisher | The American Association of Immunologists |
| Publisher Date | 2012-03-15 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Adjuvants, Immunologic Administration & Dosage Cytokines Biosynthesis Immunity, Mucosal Immunology Interleukin-1alpha Vaccination Animals Antigens, Bacterial Antigens, Cd11c Metabolism Bacterial Toxins Cell Separation Enzyme-linked Immunosorbent Assay Flow Cytometry Mice Mice, Inbred C57bl Mice, Knockout Monocytes Radiation Chimera Research Support, N.i.h., Extramural Discipline Immunology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Immunology and Allergy Immunology |
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