期刊
JOURNAL OF MOLECULAR MEDICINE-JMM
卷 90, 期 4, 页码 353-359出版社
SPRINGER
DOI: 10.1007/s00109-011-0835-2
关键词
Selectin; Chemokin; Integrin regulation; Signaling; GDF-15
资金
- German Research Foundation [AZ 428/3-1, AZ 428/6-1]
- Interdisciplinary Clinical Research Center (IZKF Muenster, Germany) [Za2/001/10]
Leukocyte recruitment into tissue forms the basis of immune surveillance and direct immune defense. It proceeds in a cascade-like fashion. The first contact of leukocytes with the endothelium is mediated by selectins and their counter receptors, followed by rolling and integrin-mediated arrest. While rolling, neutrophils collect different inflammatory signals which can activate several signaling pathways leading to leukocyte adhesion to the endothelium and transmigration through the blood vessel wall into the inflamed tissue. Whereas inflammatory reactions are beneficial and necessary for host defense, they need to be balanced and controlled to prevent harmful consequences and tissue destruction. In this article, we discuss the different signaling pathways that ensure rapid and efficient integrin activation on leukocytes. In addition, we report on a recently identified novel endogenous mechanism that counteracts and balances integrin activation, thereby limiting leukocyte recruitment and the extent of inflammation. Further investigation of this new mechanism may allow providing new approaches for the development of the next generation of anti-inflammatory drugs.
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