期刊
FRONTIERS IN IMMUNOLOGY
卷 10, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fimmu.2019.02028
关键词
macrophage; monocyte; glucocorticoids; anti-inflammatory; resolution of inflammation
类别
资金
- Interdisciplinary Center of Clinical Research at the University of Muenster [Ro2/023/19, Eh2/019/11]
- German Research Foundation (DFG) [CRC 1009 B8 Z2]
- ERARE2 network Treat-AID
- ERARE2 network Cure-AID
- Federal Ministry of Education and Research (BMBF), project AID-NET
- DFG [EH 397/2-1]
- program Innovative Medizinische Forschung (IMF) [EH111006]
Uncontrolled inflammation is a leading cause of many clinically relevant diseases. Current therapeutic strategies focus mainly on immunosuppression rather than on the mechanisms of inflammatory resolution. Glucocorticoids (GCs) are still the most widely used anti-inflammatory drugs. GCs affect most immune cells but there is growing evidence for cell type specific mechanisms. Different subtypes of monocytes and macrophages play a pivotal role both in generation as well as resolution of inflammation. Activation of these cells by microbial products or endogenous danger signals results in production of pro-inflammatory mediators and initiation of an inflammatory response. GCs efficiently inhibit these processes by down-regulating pro-inflammatorymediators frommacrophages and monocytes. On the other hand, GCs act on naive monocytes and macrophages and induce anti-inflammatory mediators and differentiation of anti-inflammatory phenotypes. GC-induced anti-inflammatory monocytes have an increased ability to migrate toward inflammatory stimuli. They remove endo-and exogenous danger signals by an increased phagocytic capacity, produce anti-inflammatory mediators and limit T-cell activation. Thus, GCs limit amplification of inflammation by repressing pro-inflammatory macrophage activation and additionally induce anti-inflammatory monocyte and macrophage populations actively promoting resolution of inflammation. Further investigation of these mechanisms should lead to the development of novel therapeutic strategies to modulate undesirable inflammation with fewer side effects via induction of inflammatory resolution rather than non-specific immunosuppression.
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