Natural innate cytokine response to immunomodulators and adjuvants in human precision-cut lung slices

Journal Article · Sun Aug 01 00:00:00 EDT 2010 · Toxicology and Applied Pharmacology

DOI:https://doi.org/10.1016/j.taap.2010.04.010· OSTI ID:21460189

Switalla, S; Lauenstein, L; Prenzler, F; Knothe, S ^[1]; Foerster, C; Fieguth, H -G; Pfennig, O ^[2]; Schaumann, F ^[1]; Martin, C ^[3]; Guzman, C A; Ebensen, T ^[4]; Mueller, M; Hohlfeld, J M; Krug, N; Braun, A ^[1]; Sewald, K ^[1]

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1. Fraunhofer Institute for Toxicology and Experimental Medicine, Division of Immunology, Allergy and Airway Research, Nikolai-Fuchs-Str. 1, D-30625 Hannover (Germany)
2. Klinikum Region Hannover (KRH), Hannover (Germany)
3. Institute of Pharmacology and Toxicology, RWTH Aachen, Wendlingweg 2, 52074 Aachen (Germany)
4. Helmholtz Centre for Infection Research, Department of Vaccinology and Applied Microbiology, Inhoffenstrasse 7, 38124 Braunschweig (Germany)

Prediction of lung innate immune responses is critical for developing new drugs. Well-established immune modulators like lipopolysaccharides (LPS) can elicit a wide range of immunological effects. They are involved in acute lung diseases such as infections or chronic airway diseases such as COPD. LPS has a strong adjuvant activity, but its pyrogenicity has precluded therapeutic use. The bacterial lipopeptide MALP-2 and its synthetic derivative BPPcysMPEG are better tolerated. We have compared the effects of LPS and BPPcysMPEG on the innate immune response in human precision-cut lung slices. Cytokine responses were quantified by ELISA, Luminex, and Meso Scale Discovery technology. The initial response to LPS and BPPcysMPEG was marked by coordinated and significant release of the mediators IL-1{beta}, MIP-1{beta}, and IL-10 in viable PCLS. Stimulation of lung tissue with BPPcysMPEG, however, induced a differential response. While LPS upregulated IFN-{gamma}, BPPcysMPEG did not. This traces back to their signaling pathways via TLR4 and TLR2/6. The calculated exposure doses selected for LPS covered ranges occurring in clinical studies with human beings. Correlation of obtained data with data from human BAL fluid after segmental provocation with endotoxin showed highly comparable effects, resulting in a coefficient of correlation > 0.9. Furthermore, we were interested in modulating the response to LPS. Using dexamethasone as an immunosuppressive drug for anti-inflammatory therapy, we found a significant reduction of GM-CSF, IL-1{beta}, and IFN-{gamma}. The PCLS-model offers the unique opportunity to test the efficacy and toxicity of biological agents intended for use by inhalation in a complex setting in humans.

• OSTI ID: 21460189
• Journal Information: Toxicology and Applied Pharmacology, Vol. 246, Issue 3; Other Information: DOI: 10.1016/j.taap.2010.04.010; PII: S0041-008X(10)00137-7; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0041-008X
• Country of Publication: United States
• Language: English

Related Subjects

60 APPLIED LIFE SCIENCES
DEXAMETHASONE
ENZYME IMMUNOASSAY
IMMUNOSUPPRESSIVE DRUGS
INFLAMMATION
LIPOPOLYSACCHARIDES
LUNGS
LYMPHOKINES
THERAPEUTIC USES
ADRENAL HORMONES
BIOASSAY
BODY
CARBOHYDRATES
CORTICOSTEROIDS
DRUGS
GLUCOCORTICOIDS
GROWTH FACTORS
HORMONES
HYDROXY COMPOUNDS
IMMUNOASSAY
KETONES
LIPIDS
MITOGENS
ORGANIC COMPOUNDS
ORGANS
PATHOLOGICAL CHANGES
POLYSACCHARIDES
PREGNANES
PROTEINS
RESPIRATORY SYSTEM
SACCHARIDES
STEROID HORMONES
STEROIDS
SYMPTOMS
USES