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        Protein corona on magnetite nanoparticles and internalization of nanoparticle-protein complexes into healthy and cancer cells

        Jiang, Wen,Lai, Kuilin,Wu, Yao,Gu, Zhongwei 대한약학회 2014 Archives of Pharmacal Research Vol.37 No.1

        Superparamagnetic magnetite nanoparticles (MNPs) of different surface properties are incubated in complicated living fluid, including fetal bovine serum solution, cell complete culture medium and cell culture system with/without serum, to investigate the alteration of protein corona and its impact on cell internalization. The MNPs prepared by co-precipitation method are functionalized with L-Lysine (Lys), Glucosamic acid (GA) to obtain amine, carboxyl and hydroxyl groups, separately. All the particles adsorb serum proteins to form MNPs-protein complexes with the surface charge changing into negative. 1D SDS/PAGE gel images analysis indicates that the composition and content of hard protein corona on the surface of NPs are related to their functional groups and agglomeration, and the total amount of protein in the medium. In cell culture system, particles not only adsorb serum proteins, but also associate with cytosolic proteins arising from HepG2 and L02 cells. GA modified MNPs (MNPs-GA) exhibit bovine serum albumin anti-adsorption capability because of the terminal hydroxyl and carboxyl groups. MNPs-GA also shows the highest cellular uptake and label efficiency compared with uncoated MNPs and Lys modified MNPs, due to larger aggregates formation and specific protein corona composition, rather than commonly approved electrostatic interaction between particles and cells. For the first time, our results provide visualized reports on previously neglected, but indispensable protein corona of the MNPs after interaction with both healthy and cancer cells, suggesting that cytosolic protein corona from cells and aggregation of particles are important factors needed to be account for on studying the nano-bio interface.

      • KCI등재

        Protein corona on magnetite nanoparticles and internalization of nanoparticle–protein complexes into healthy and cancer cells

        Wen Jiang,Kuilin Lai,Yao Wu,Zhongwei Gu 대한약학회 2014 Archives of Pharmacal Research Vol.37 No.1

        Superparamagnetic magnetite nanoparticles(MNPs) of different surface properties are incubated incomplicated living fluid, including fetal bovine serumsolution, cell complete culture medium and cell culturesystem with/without serum, to investigate the alteration ofprotein corona and its impact on cell internalization. TheMNPs prepared by co-precipitation method are functionalizedwith L-Lysine (Lys), Glucosamic acid (GA) to obtainamine, carboxyl and hydroxyl groups, separately. All theparticles adsorb serum proteins to form MNPs–proteincomplexes with the surface charge changing into negative. 1D SDS/PAGE gel images analysis indicates that thecomposition and content of hard protein corona on thesurface of NPs are related to their functional groups andagglomeration, and the total amount of protein in themedium. In cell culture system, particles not only adsorbserum proteins, but also associate with cytosolic proteinsarising from HepG2 and L02 cells. GA modified MNPs(MNPs-GA) exhibit bovine serum albumin anti-adsorptioncapability because of the terminal hydroxyl and carboxylgroups. MNPs-GA also shows the highest cellular uptakeand label efficiency compared with uncoated MNPs andLys modified MNPs, due to larger aggregates formationand specific protein corona composition, rather than commonlyapproved electrostatic interaction between particles and cells. For the first time, our results provide visualizedreports on previously neglected, but indispensable proteincorona of the MNPs after interaction with both healthy andcancer cells, suggesting that cytosolic protein corona fromcells and aggregation of particles are important factorsneeded to be account for on studying the nano–biointerface.

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