PMID- 20030670 OWN - NLM STAT- MEDLINE DCOM- 20100816 LR - 20211020 IS - 1365-2249 (Electronic) IS - 0009-9104 (Print) IS - 0009-9104 (Linking) VI - 160 IP - 2 DP - 2010 May TI - Dendritic cells pulsed with antigen-specific apoptotic bodies prevent experimental type 1 diabetes. PG - 207-14 LID - 10.1111/j.1365-2249.2009.04082.x [doi] AB - Dendritic cells (DCs) are powerful antigen-presenting cells capable of maintaining peripheral tolerance. The possibility to generate tolerogenic DCs opens new therapeutic approaches in the prevention or remission of autoimmunity. There is currently no treatment inducing long-term tolerance and remission in type 1 diabetes (T1D), a disease caused by autoimmunity towards beta cells. An ideal immunotherapy should inhibit the autoimmune attack, avoid systemic side effects and allow islet regeneration. Apoptotic cells--a source of autoantigens--are cleared rapidly by macrophages and DCs through an immunologically silent process that contributes to maintaining tolerance. Our aims were to prevent T1D and to evaluate the re-establishment of peripheral tolerance using autologous DCs pulsed in vitro with apoptotic bodies from beta cells. Immature DCs derived from bone marrow of non-obese diabetic (NOD) mice were obtained and pulsed with antigen-specific apoptotic bodies from the beta cell line NIT-1. Those DCs that phagocytosed apoptotic cells diminished the expression of co-stimulatory molecules CD40 and CD86 and reduced secretion of proinflammatory cytokines. Moreover, these cells were resistant to increase the expression of co-stimulatory molecules after lipopolysaccharide activation. The administration of these cells to NOD transgenic mice expressing interferon-beta in their insulin-producing cells, a model of accelerated autoimmune diabetes, decreased diabetes incidence significantly and correlated positively with insulitis reduction. DCs pulsed with apoptotic cells that express disease-associated antigens constitutes a promising strategy to prevent T1D. FAU - Marin-Gallen, S AU - Marin-Gallen S AD - Laboratory of Immunobiology for Research and Diagnosis-Blood and Tissue Bank (LIRAD-BST), Germans Trias i Pujol Research Institute, Department of Cellular Biology, Physiology and Immunology, Autonomous University of Barcelona, Barcelona, Spain. FAU - Clemente-Casares, X AU - Clemente-Casares X FAU - Planas, R AU - Planas R FAU - Pujol-Autonell, I AU - Pujol-Autonell I FAU - Carrascal, J AU - Carrascal J FAU - Carrillo, J AU - Carrillo J FAU - Ampudia, R AU - Ampudia R FAU - Verdaguer, J AU - Verdaguer J FAU - Pujol-Borrell, R AU - Pujol-Borrell R FAU - Borras, F E AU - Borras FE FAU - Vives-Pi, M AU - Vives-Pi M LA - eng PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20091217 PL - England TA - Clin Exp Immunol JT - Clinical and experimental immunology JID - 0057202 RN - 0 (Autoantigens) RN - 0 (Epitopes) RN - 0 (Lipopolysaccharides) RN - 0 (Recombinant Fusion Proteins) RN - 77238-31-4 (Interferon-beta) SB - IM MH - Animals MH - Apoptosis/*immunology MH - Autoantigens/administration & dosage/*immunology MH - Cells, Cultured MH - Cytoplasmic Vesicles/immunology MH - *Dendritic Cells/immunology MH - Diabetes Mellitus, Type 1/genetics/immunology/*prevention & control MH - Endocytosis MH - Epitopes MH - Female MH - Immune Tolerance/*immunology MH - Immunotherapy/*methods MH - Insulin-Secreting Cells/*immunology/pathology MH - Interferon-beta/genetics MH - Lipopolysaccharides/pharmacology MH - Lymphocyte Activation/drug effects MH - Mice MH - Mice, Inbred NOD MH - Mice, Transgenic MH - Recombinant Fusion Proteins/genetics MH - Specific Pathogen-Free Organisms PMC - PMC2857943 EDAT- 2009/12/25 06:00 MHDA- 2010/08/17 06:00 PMCR- 2011/05/01 CRDT- 2009/12/25 06:00 PHST- 2009/12/25 06:00 [entrez] PHST- 2009/12/25 06:00 [pubmed] PHST- 2010/08/17 06:00 [medline] PHST- 2011/05/01 00:00 [pmc-release] AID - CEI4082 [pii] AID - 10.1111/j.1365-2249.2009.04082.x [doi] PST - ppublish SO - Clin Exp Immunol. 2010 May;160(2):207-14. doi: 10.1111/j.1365-2249.2009.04082.x. Epub 2009 Dec 17.