PMID- 9973384 OWN - NLM STAT- MEDLINE DCOM- 19990413 LR - 20141120 IS - 0022-1767 (Print) IS - 0022-1767 (Linking) VI - 162 IP - 3 DP - 1999 Feb 1 TI - Comparison of lung dendritic cells and B cells in stimulating naive antigen-specific T cells. PG - 1310-7 AB - Dendritic cells (DCs) are specialized APCs that are important in priming naive T cells and can be manipulated in vitro and in vivo to enhance immunizations against microorganisms and tumors. A limitation in the development of suitable immunotherapeutic vaccines for the lung is incomplete information on the role of DCs and other potential APCs in the lung in priming naive T cells. In the current study, we analyzed the relative contributions of murine lung DCs and B cells to process and present OVA to naive CD4+ OVA323-339-specific (DO11.10) T cells in vitro. We also examined their expression of MHC class II and accessory molecules before and after maturation in culture. Similar to DCs from other sites, freshly isolated lung DCs can process OVA, spontaneously up-regulate MHC class II and accessory molecules during overnight culture, and stimulate naive T cells in an Ag-specific manner. In contrast, freshly isolated lung B cells were unable to both process and present native OVA. Furthermore, under conditions of limited OVA323-339 peptide exposure, B cells had a significantly diminished capacity to stimulate T cells, and this correlated with a decreased density of both MHC class II and important costimulatory molecules as compared with lung DCs. FAU - Masten, B J AU - Masten BJ AD - Department of Pathology, University of New Mexico, Albuquerque, NM 87131, USA. bmasten@salud.unm.edu FAU - Lipscomb, M F AU - Lipscomb MF LA - eng GR - HL09546/HL/NHLBI NIH HHS/United States GR - P50 HL56384/HL/NHLBI NIH HHS/United States GR - R01 AI 21951/AI/NIAID NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R RN - 0 (Antigens) RN - 0 (Histocompatibility Antigens Class II) RN - 0 (I-Ad antigen) RN - 0 (OVA 323-339) RN - 0 (Peptide Fragments) RN - 0 (Receptors, Antigen, T-Cell, alpha-beta) RN - 9006-59-1 (Ovalbumin) SB - IM MH - Animals MH - Antigen Presentation MH - Antigens MH - B-Lymphocytes/*immunology MH - Cells, Cultured MH - Dendritic Cells/*immunology MH - Female MH - Histocompatibility Antigens Class II/metabolism MH - In Vitro Techniques MH - Lung/*cytology/*immunology MH - Lymphocyte Activation MH - Male MH - Mice MH - Mice, Inbred BALB C MH - Mice, Transgenic MH - Ovalbumin/immunology MH - Peptide Fragments/immunology MH - Receptors, Antigen, T-Cell, alpha-beta/genetics MH - T-Lymphocytes/*immunology EDAT- 1999/02/11 00:00 MHDA- 1999/02/11 00:01 CRDT- 1999/02/11 00:00 PHST- 1999/02/11 00:00 [pubmed] PHST- 1999/02/11 00:01 [medline] PHST- 1999/02/11 00:00 [entrez] PST - ppublish SO - J Immunol. 1999 Feb 1;162(3):1310-7.