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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Gleisner, M. A. Rosemblatt, M. Fierro, J. A. Bono, M. R. |
| Description | Country affiliation: Chile Author Affiliation: Gleisner MA ( Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Santiago, Chile.) |
| Abstract | BACKGROUND: Dendritic cells (DCs) are professional antigen-presenting cells able to induce immunity or tolerance. The interactions of immature DCs with naive T lymphocytes induce peripheral tolerance through mechanisms that include anergy or deletion of lymphocytes or the generation of regulatory T cells. Because of the central role of DCs in the immune response, they are potential targets for the induction of experimental tolerance. Thus, the generation of immature (tolerogenic) DCs able to capture and present alloantigens to T cells represents an important aim in our efforts to achieve better transplant acceptance. METHODS: In this work, we generated immature DCs by using vitamin D(3) (VD3) during the process of DC differentiation. RESULTS: The VD3-DCs showed an immature phenotype characterized by a low expression of major histocompatibility complex antigens of class II, CD86, and CD80 molecules and the secretion of a tolerogenic cytokine pattern. Furthermore, we showed that VD3-DCs phagocytose apoptotic allogeneic cells efficiently without inducing DC maturation or activation. Most important, our experiments demonstrated that mice treated with VD3 produce immature DCs in vivo, and that DCs from VD3-treated mice immunized with allogeneic apoptotic cells maintained their tolerogenic phenotype. CONCLUSION: Our results show that allogeneic apoptotic cells in combination with VD3 generate DCs with tolerogenic characteristics that could be used to induce tolerance towards alloantigens. |
| File Format | HTM / HTML |
| ISSN | 00411345 |
| Issue Number | 6 |
| Volume Number | 43 |
| e-ISSN | 18732623 |
| Journal | Transplantation Proceedings |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2011-07-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Transplantation__semicolon__medicine Apoptosis Dendritic Cells Immunology Immune Tolerance Isoantigens Phagocytosis Thymocytes Animals Antigens, Cd Antigens, Cd80 Antigens, Differentiation, Myelomonocytic Cell Differentiation Cells, Cultured Cholecalciferol Pharmacology Cytokines Metabolism Drug Effects Histocompatibility Antigens Class Ii Immunophenotyping Male Melanoma, Experimental Genetics Membrane Proteins Mice Mice, Inbred Balb C Mice, Inbred C57bl Necrosis Phenotype Pathology Transplantation Time Factors Transfection Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Transplantation Surgery |
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