Related Experiment Video
Updated: Feb 1, 2026
08:37
Reprograming Model of Human Monocyte-derived Macrophages for In-vitro Assays
Published on: April 18, 2025
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House dust mite drives proinflammatory eicosanoid reprogramming and macrophage effector functions.
Fiona D R Henkel1, Antonie Friedl1, Mark Haid2
1Center of Allergy and Environment (ZAUM), Technical University of Munich and Helmholtz Center Munich, Munich, Germany.
Allergy
|December 17, 2018
Summary
Macrophages reprogram eicosanoid metabolism during type 2 immune responses to allergens like house dust mite. This lipid mediator reprogramming in airway macrophages offers potential therapeutic targets for allergy and asthma.
Area of Science:
- Immunology
- Lipid Mediator Metabolism
- Allergy and Asthma Research
Background:
- Eicosanoid lipid mediators are crucial in type 2 immune responses, particularly in allergy and asthma.
- Macrophages are significant producers of eicosanoids and play a key role in type 2 immunity.
Purpose of the Study:
- To comprehensively track eicosanoid profiles during type 2 immune responses to house dust mite (HDM) or helminth infection.
- To identify the mechanisms and functions of eicosanoid reprogramming in human macrophages.
Main Methods:
- Established an LC-MS/MS workflow to quantify 52 oxylipins in human monocyte-derived macrophages (MDM).
- Analyzed mediator profiles in HDM-stimulated MDM and during allergic airway inflammation (AAI) or nematode infection in mice.
- Assessed eicosanoid enzyme expression (qPCR, Western blot) and cytokine production (multiplex assays).
Main Results:
- Short HDM exposure suppressed 5-LOX but triggered prostanoid production in MDM, a p38-dependent process.
- HDM induced proinflammatory cytokines but reduced granulocyte recruitment by MDM.
- AAI or nematode infection in mice showed high levels of cysteinyl leukotrienes and 12-/15-LOX metabolites.
Conclusions:
- Type 2 immune responses involve fundamental reprogramming of lipid mediator metabolism, with macrophages being highly adaptable.
- Targeting mediator reprogramming in airway macrophages could be a strategy to prevent detrimental lipid mediator profiles in allergic diseases.
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