期刊
PHARMACOLOGY & THERAPEUTICS
卷 188, 期 -, 页码 97-117出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.pharmthera.2018.03.002
关键词
Tyro3; Axl and Mertk receptor tyrosine kinase family; Gas6; ProS1; Homeostasis in the nervous system; Myelination; Inflammation; Phagocytosis
资金
- National Multiple Sclerosis Society [RG5351-A-10]
- National Institues of Health [NS093134]
Tyro3, Axl, and Mertk, referred to as the TAM family of receptor tyrosine kinases, are instrumental in maintaining cell survival and homeostasis in mammals. TAM receptors interact with multiple signaling molecules to regulate cell migration, survival, phagocytosis and clearance of metabolic products and cell debris called efferocytosis. The TAMs also function as rheostats to reduce the expression of proinflammatory molecules and prevent autoimmunity. All three TAM receptors are activated in a concentration-dependent manner by the vitamin K-dependent growth arrest-specific protein 6 (Gas6). Gas6 and the TAMs are abundantly expressed in the nervous system. Gas6, secreted by neurons and endothelial cells, is the sole ligand for Axl. ProteinS1 (ProS1), another vitamin K-dependent protein functions mainly as an anti-coagulant, and independent of this function can activate Tyro3 and Mertk, but not Axl. This review will focus on the role of the TAM receptors and their ligands in the nervous system. We highlight studies that explore the function of TAM signaling in myelination, the visual cortex, neural cancers, and multiple sclerosis (MS) using Gas6(-/-) and TAM mutant mice models. (C) 2018 Elsevier Inc. All rights reserved.
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