PMID- 15663364 OWN - NLM STAT- MEDLINE DCOM- 20050628 LR - 20191109 IS - 1040-8401 (Print) IS - 1040-8401 (Linking) VI - 24 IP - 5 DP - 2004 TI - The impact of extracellular acidosis on dendritic cell function. PG - 363-84 AB - Dendritic cells (DCs) are the most efficient antigen-presenting cells. They are activated in the periphery by conserved pathogen molecules and by inflammatory mediators produced by a variety of cell types in response to danger signals. It is widely appreciated that inflammatory responses in peripheral tissues are usually associated with the development of acidic microenvironments. Surprisingly, there are relatively few studies directed to analyze the effect of extracellular acidosis on the immune response. We focus on the influence of extracellular acidosis on the function of immature DCs. The results presented here show that acidosis activates DCs. It increases the acquisition of extracellular antigens for MHC class I-restricted presentation and the ability of antigen-pulsed DCs to induce both specific CD8+ CTL and B-cell responses. These findings may have important implications to our understanding of the mechanisms through which DCs sense the presence of infection or inflammation in nonlymphoid tissues. FAU - Vermeulen, Monica Elba AU - Vermeulen ME AD - Institute of Hematologic Research, National Academy of Medicine, Department of Microbiology, Buenos Aires University School of Medicine, Buenos Aires, Argentina. FAU - Gamberale, Romina AU - Gamberale R FAU - Trevani, Analia Silvina AU - Trevani AS FAU - Martinez, Diego AU - Martinez D FAU - Ceballos, Ana AU - Ceballos A FAU - Sabatte, Juan AU - Sabatte J FAU - Giordano, Mirta AU - Giordano M FAU - Geffner, Jorge Raul AU - Geffner JR LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review PL - United States TA - Crit Rev Immunol JT - Critical reviews in immunology JID - 8914819 RN - 0 (Antigens) RN - 0 (Membrane Proteins) RN - 0 (Receptors, Antigen) SB - IM MH - Acidosis/*metabolism MH - Animals MH - Antigen Presentation/immunology MH - Antigens/immunology MH - Cell Movement/immunology MH - Dendritic Cells/cytology/immunology/*metabolism MH - Humans MH - Inflammation/metabolism MH - Lymphoid Tissue/cytology/immunology MH - Membrane Proteins/immunology MH - Neoplasms/metabolism MH - Pinocytosis/immunology MH - Receptors, Antigen/immunology RF - 232 EDAT- 2005/01/25 09:00 MHDA- 2005/06/29 09:00 CRDT- 2005/01/25 09:00 PHST- 2005/01/25 09:00 [pubmed] PHST- 2005/06/29 09:00 [medline] PHST- 2005/01/25 09:00 [entrez] AID - 1e5f41565309d988,1ad549c5344f5112 [pii] AID - 10.1615/critrevimmunol.v24.i5.40 [doi] PST - ppublish SO - Crit Rev Immunol. 2004;24(5):363-84. doi: 10.1615/critrevimmunol.v24.i5.40.