國家衛生研究院 NHRI:Item 3990099045/4336
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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/4336


    Title: Surface charge-mediated rapid hepatobiliary excretion of mesoporous silica nanoparticles
    Authors: Souris, JS;Lee, CH;Cheng, SH;Chen, CT;Yang, CS;Ho, JaA;Mou, CY;Lo, LW
    Contributors: Center for Nanomedicine Research;Division of Medical Engineering Research
    Abstract: Nanoparticle-assisted drug delivery has been emerging as an active research area in recent years. The in vivo biodistribution of nanoparticle and its following mechanisms of biodegradation and/or excretion determine the feasibility and applicability of such a nano-delivery platform in the practical clinical translation. In this work we report the synthesis of the highly positive charge, near-infrared fluorescent mesoporous silica nanoparticles (MSNs) that demonstrate rapid hepatobiliary excretion, for use as traceable drug delivery platforms of high capacity. MSNs were incorporated with near-infrared fluorescent dye indocyanine green (ICG) via covalent or ionic bonding, to derive comparable constructs of significantly different net surface charge. In vivo fluorescence imaging and subsequent inductively coupled plasma-mass spectroscopy of harvested tissues, urine, and feces revealed markedly different uptake and elimination behaviors between the two conjugations; with more highly charged moieties (+34.4?mV at pH 7.4) being quickly excreted from the liver into the gastrointestinal tract, while less charged moieties (-17.6?mV at pH 7.4) remained sequestered within the liver. Taken together, these findings suggest that charge-dependent adsorption of serum proteins greatly facilitates the hepatobiliary excretion of silica nanoparticles, and that nanoparticle residence time in vivo can be regulated by manipulation of surface charge.
    Date: 2010-07
    Relation: Biomaterials.2010 Jul;31(21):5564-5574.
    Link to: http://dx.doi.org/10.1016/j.biomaterials.2010.03.048
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0142-9612&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000279092600009
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=77953020259
    Appears in Collections:[Leu-Wei Lo] Periodical Articles
    [Chung-Shi Yang] Periodical Articles

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