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納米粒度測(cè)量應(yīng)用案例-53-90Plus

來(lái)源:美國(guó)布魯克海文儀器公司   2015年07月20日 15:02  
 文獻(xiàn)名: Enhancing cancer targeting and anticancer activity by a stimulus-sensitive multifunctional polymer-drug conjugate
 
作者: Ying Tu, Lin Zhu
Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy, Texas A&M University Health Science Center, Kingsville, TX 78363, United States
 
摘要:Undesirable physicochemical properties, low tumor targeting, insufficient cell internalization, acquired drug resistance, and severe side effects significantly limit the applications of anticancer drugs. In this study, to improve the tumor targeting and drug efficacy of the poorly water-soluble drug, doxorubicin (DOX), a novel drug delivery platform (PEG-ppTAT-DOX) was developed, which contained a polyethylene glycol (PEG), a matrix metalloproteinase 2 (MMP2)-sensitive peptide linker (pp), a cell penetrating peptide (TAT), and a model drug (doxorubicin). The prepared drug platform possessed several key features, including: (i) the nanoparticle formation via the self-assembly; (ii) prevention of the non-specific interaction via the PEGylation; (iii) tumor targeting via the MMP2-mediated PEG deshielding and exposure of the TAT; (iv) the TAT-mediated cell internalization; (v) the TAT-induced endosomal escape; (vi) the inhibition of P-glycoprotein mediated drug efflux; and (vii) the TAT-medicated nuclear translocation. These cooperative functions ensured the improved tumor targetability, enhanced tumor cell internalization, improved intracellular distribution, and potentiated anticancer activity. Compared to the multi-component nanocarriers, the proposed simple but multifunctional polymer-drug conjugate might have greater potential for tumor-targeted drug delivery and enhanced chemotherapy.
 
關(guān)鍵詞:Drug delivery; Tumor targeting; Multifunctional; Matrix metalloproteinase 2; Cell penetrating peptide; Polymer-drug conjugate
 

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