PMID- 18504053 OWN - NLM STAT- MEDLINE DCOM- 20080919 LR - 20181211 IS - 0041-008X (Print) IS - 0041-008X (Linking) VI - 231 IP - 1 DP - 2008 Aug 15 TI - Ex vivo testing of immune responses in precision-cut lung slices. PG - 68-76 LID - 10.1016/j.taap.2008.04.003 [doi] AB - The aim of this study was the establishment of precision-cut lung slices (PCLS) as a suitable ex vivo alternative approach to animal experiments for investigation of immunomodulatory effects. For this purpose we characterized the changes of cytokine production and the expression of cell surface markers after incubation of PCLS with immunoactive substances lipopolysaccharide (LPS), macrophage-activating lipopeptide-2 (MALP-2), interferon gamma (IFNgamma), and dexamethasone. Viability of PCLS from wild-type and CD11c-enhanced yellow fluorescent protein (CD11-EYFP)-transgenic mice was controlled by measurement of lactate dehydrogenase (LDH) enzyme activity and live/dead fluorescence staining using confocal microscopy. Cytokines and chemokines were detected with Luminex technology and ELISA. Antigen presenting cell (APC) markers were investigated in living mouse PCLS in situ using confocal microscopy. LPS triggered profound pro-inflammatory effects in PCLS. Dexamethasone prevented LPS-induced production of cytokines/chemokines such as interleukin (IL)-5, IL-1alpha, TNFalpha, IL-12(p40), and RANTES in PCLS. Surface expression of MHC class II, CD40, and CD11c, but not CD86 was present in APCs of naive PCLS. Incubation with LPS enhanced specifically the expression of MHC class II on diverse cells. MALP-2 only failed to alter cytokine or chemokine levels, but was highly effective in combination with IFNgamma resulting in increased levels of TNFalpha, IL-12(p40), RANTES, and IL-1alpha. PCLS showed characteristic responses to typical pro-inflammatory stimuli and may thus provide a suitable ex vivo technique to predict the immunomodulatory potency of inhaled substances. FAU - Henjakovic, M AU - Henjakovic M AD - Fraunhofer Institute of Toxicology and Experimental Medicine, Department of Immunology, Allergology and Immunotoxicology, Nikolai-Fuchs-Str. 1, 30625 Hannover, Germany. FAU - Sewald, K AU - Sewald K FAU - Switalla, S AU - Switalla S FAU - Kaiser, D AU - Kaiser D FAU - Muller, M AU - Muller M FAU - Veres, T Z AU - Veres TZ FAU - Martin, C AU - Martin C FAU - Uhlig, S AU - Uhlig S FAU - Krug, N AU - Krug N FAU - Braun, A AU - Braun A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20080411 PL - United States TA - Toxicol Appl Pharmacol JT - Toxicology and applied pharmacology JID - 0416575 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Chemokines) RN - 0 (Cytokines) RN - 0 (Fluoresceins) RN - 0 (Fluorescent Dyes) RN - 0 (Lipopeptides) RN - 0 (Lipopolysaccharides) RN - 0 (Oligopeptides) RN - 148504-34-1 (calcein AM) RN - 7S5I7G3JQL (Dexamethasone) RN - 82115-62-6 (Interferon-gamma) RN - DZX5IUA94D (macrophage stimulatory lipopeptide 2) RN - EN464416SI (Ethidium) SB - IM MH - Animals MH - Anti-Inflammatory Agents/pharmacology MH - Cell Survival MH - Chemokines/biosynthesis MH - Cytokines/biosynthesis MH - Dexamethasone/pharmacology MH - Enzyme-Linked Immunosorbent Assay MH - Ethidium MH - Female MH - Fluoresceins MH - Fluorescent Dyes MH - Image Processing, Computer-Assisted MH - Immunity/*physiology MH - Interferon-gamma/pharmacology MH - Lipopeptides MH - Lipopolysaccharides/pharmacology MH - Lung/*immunology MH - Mice MH - Mice, Inbred BALB C MH - Mice, Inbred C57BL MH - Oligopeptides/pharmacology MH - Tissue Culture Techniques EDAT- 2008/05/28 09:00 MHDA- 2008/09/20 09:00 CRDT- 2008/05/28 09:00 PHST- 2008/02/06 00:00 [received] PHST- 2008/04/02 00:00 [revised] PHST- 2008/04/02 00:00 [accepted] PHST- 2008/05/28 09:00 [pubmed] PHST- 2008/09/20 09:00 [medline] PHST- 2008/05/28 09:00 [entrez] AID - S0041-008X(08)00160-9 [pii] AID - 10.1016/j.taap.2008.04.003 [doi] PST - ppublish SO - Toxicol Appl Pharmacol. 2008 Aug 15;231(1):68-76. doi: 10.1016/j.taap.2008.04.003. Epub 2008 Apr 11.