关键词: Brain capillary endothelial cells CXCL10 IFN-β ISG60 TLR3

Mesh : Capillaries / cytology drug effects metabolism Cell Line Endothelial Cells / drug effects metabolism Feedback, Physiological / drug effects physiology Humans Intracellular Signaling Peptides and Proteins / biosynthesis genetics Poly I-C / pharmacology Signal Transduction / drug effects physiology Toll-Like Receptor 3 / antagonists & inhibitors biosynthesis genetics

来  源:   DOI:10.1016/j.jneuroim.2018.08.016

Abstract:
Brain capillary endothelial cells are the component of blood brain barrier, and the first line of defense against viruses invading into brain. We demonstrate that treatment of hCMEC/D3 cells, a human brain capillary endothelial cell line, with a Toll-like receptor 3 (TLR3) agonist polyinosinic-polycytidylic acid (poly IC) induces the expression of interferon (IFN)-stimulated gene 60 (ISG60), and this reaction was mediated by IFN-β. Knockdown of ISG60 increased the poly IC-induced expression of IFN-β and an IFN-β-inducible chemokine CXCL10. This indicates that ISG60 constitutes a negative feedback loop in the downstream of TLR3/IFN-β. ISG60 in brain capillary endothelial cells may contribute to prevent excess immune reactions associated with viral infections.
摘要:
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