國家衛生研究院 NHRI:Item 3990099045/9568
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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/9568


    Title: Quantum dots induced interferon beta expression via TRIF-dependent signaling pathways by promoting endocytosis of TLR4
    Authors: Ho, CC;Luo, YH;Chuang, TH;Lin, P
    Contributors: National Institute of Environmental Health Sciences;Immunology Research Center
    Abstract: Quantum dots (QDs) are nano-sized semiconductors. Previously, intratracheal instillation of QD705s induces persistent inflammation and remodeling in the mouse lung. Expression of interferon beta (IFN-β), involved in tissue remodeling, was induced in the mouse lung. The objective of this study was to understand the mechanism of QD705 induced interferon beta (IFN-β) expression. QD705-COOH and QD705-PEG increased IFN-β and IP-10 mRNA levels during day1 to 90 post-exposure in mouse lungs. QD705-COOH increased IFN-β expression via Toll/interleukin-1 receptor domain-containing adapter protein (TRIF) dependent Toll-like receptor (TLR) signaling pathways in macrophages RAW264.7. Silencing TRIF expression with siRNA or co-treatment with a TRIF inhibitor tremendously abolished QD705s-induced IFN-β expression. Co-treatment with a TLR4 inhibitor completely prevented IFN-β induction by QD705-COOH. QD705-COOH readily entered cells, and co-treatment with either inhibitors of endocytosis or intracellular TLRs prevented IFN-β induction. Thus, activation of the TRIF dependent TLRs pathway by promoting endocytosis of TLR4 is one of the mechanisms for immunomodulatory effects of nanoparticles.
    Date: 2016-02
    Relation: Toxicology. 2016 Feb;344-346:61-70.
    Link to: http://dx.doi.org/10.1016/j.tox.2016.02.005
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0300-483X&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000373551900008
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84960252515
    Appears in Collections:[Pinpin Lin] Periodical Articles
    [Tsung-Hsien Chuang] Periodical Articles

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