dc.contributor.advisor | Zaghouani, Habib | eng |
dc.contributor.author | Haymaker, Cara Lena, 1982- | eng |
dc.date.issued | 2011 | eng |
dc.date.submitted | 2011 Summer | eng |
dc.description | Title from PDF of title page (University of Missouri--Columbia, viewed on May 22, 2012). | eng |
dc.description | The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. | eng |
dc.description | Dissertation advisor: Dr. Habib Zaghouani | eng |
dc.description | Vita. | eng |
dc.description | Includes bibliographical references. | eng |
dc.description | "July 2011" | eng |
dc.description.abstract | [ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] The decision of a stem cell to develop into the myeloid or lymphoid lineage has been postulated to occur in the bone marrow. However, a marker of myeloidspecific progenitors in the thymus remains undefined. Herein, we show that IL-13R[alpha]1+ ETPs yield myeloid cells with no potential for maturation into T cells. These IL-13R[alpha]1+ progenitors are able to traffic from the bone marrow to the thymus and reconstituted thymic IL-13R[alpha]1+ ETPs in IL-13R[alpha]1-/- mice. Finally, the myeloid cells derived from IL-13R[alpha]1+ ETPs were able to contribute to T cell development. Thus, IL-13R[alpha]1 defines a new class of myeloid restricted ETPs that may play a role in central T cell tolerance and control of autoimmunity. When both central and peripheral tolerance mechanisms fail, autoimmune diseases such as multiple sclerosis can arise. In this study we have devised a method to induce tolerance through oral administration of an Ig chimera. Disease suppression was characterized by the systemic reduction of pro-inflammatory cytokines. Interestingly, upon oral treatment, LP APCs acquired a "tolerogenic" phenotype and were able to transfer tolerance to na[i with umlaut] ve mice induced for disease. Furthermore, transfer of tolerance by LP APCs was dependent upon an initial antigen-specific APC-T cell education in the gut. This study provides a novel mechanism of oral tolerance mediated by LP APCs, which can be utilized to induce tolerance to auto-antigens and reverse autoimmunity. | eng |
dc.format.extent | xii, 172 pages | eng |
dc.identifier.merlin | b8721068x | eng |
dc.identifier.oclc | 805700642 | eng |
dc.identifier.uri | https://hdl.handle.net/10355/14296 | |
dc.identifier.uri | https://doi.org/10.32469/10355/14296 | eng |
dc.language | English | eng |
dc.publisher | University of Missouri--Columbia | eng |
dc.relation.ispartofcommunity | University of Missouri--Columbia. Graduate School. Theses and Dissertations | eng |
dc.rights | Access is limited to the campus of the University of Missouri--Columbia. | eng |
dc.subject | thymic stem cells | eng |
dc.subject | oral tolerance | eng |
dc.subject | macrophage development | eng |
dc.subject | multiple sclerosis | eng |
dc.subject | hematopoiesis | eng |
dc.subject.mesh | Immune Tolerance -- immunology | eng |
dc.subject.mesh | Interleukin-13 Receptor alpha1 Subunit -- immunology | eng |
dc.subject.mesh | Adoptive Transfer | eng |
dc.subject.mesh | Antigen-Presenting Cells | eng |
dc.subject.mesh | Encephalomyelitis, Autoimmune, Experimental -- immunology | eng |
dc.subject.mesh | Immunoconjugates -- therapeutic use | eng |
dc.subject.mesh | Intestinal Mucosa -- immunology | eng |
dc.subject.mesh | Myelin-Associated Glycoprotein -- immunology | eng |
dc.subject.mesh | T-Lymphocytes -- immunology | eng |
dc.title | Mechanisms of central and peripheral immune tolerance | eng |
dc.type | Thesis | eng |
thesis.degree.discipline | Molecular microbiology and immunology (MU) | eng |
thesis.degree.grantor | University of Missouri--Columbia | eng |
thesis.degree.level | Doctoral | eng |
thesis.degree.name | Ph. D. | eng |