کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
2484599 1114319 2018 11 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله
Somatostatin Receptor-Mediated Specific Delivery of Paclitaxel Prodrugs for Efficient Cancer Therapy
موضوعات مرتبط
علوم پزشکی و سلامت داروسازی، سم شناسی و علوم دارویی اکتشاف دارویی
پیش نمایش صفحه اول مقاله
Somatostatin Receptor-Mediated Specific Delivery of Paclitaxel Prodrugs for Efficient Cancer Therapy
چکیده انگلیسی
In this study, a novel PTX prodrug, octreotide(Phe)-polyethene glycol-paclitaxel [OCT(Phe)-PEG-PTX], was successfully synthesized and used for targeted cancer therapy. A nontargeting conjugate, mPEG-PTX, was also synthesized and used as a control. Chemical structures of OCT(Phe)-PEG-PTX and mPEG-PTX were confirmed using 1 H nuclear magnetic resonance and circular dichroism. The drug contents in both the conjugates were 12.0% and 14.0%, respectively. Compared with the parent drug (PTX), OCT(Phe)-PEG-PTX, and mPEG-PTX prodrugs showed a 20,000- and 30,000-fold increase in water solubility, respectively. PTX release from mPEG-PTX and OCT(Phe)-PEG-PTX exhibited a pH-dependent profile. Moreover, compared with mPEG-PTX, OCT(Phe)-PEG-PTX exhibited significantly stronger cytotoxicity against NCI-H446 cells (SSTR overexpression) but comparable cytotoxicity against WI-38 cells (no SSTR expression). Results of confocal laser scanning microscopy revealed that the targeting prodrug labeled with fluorescence probe was selectively taken into tumor cells via SSTR-mediated endocytosis. In vivo investigation of prodrugs in nude mice bearing NCI-H446 cancer xenografts confirmed thatOCT(Phe)-PEG-PTX prodrug exhibited stronger antitumor efficacy and lower systemic toxicity than mPEG-PTX and commercial Taxol. These results suggested that OCT(Phe)-PEG-PTX is a promising anticancer drug delivery system for targeted cancer therapy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Pharmaceutical Sciences - Volume 104, Issue 6, June 2015, Pages 2018-2028
نویسندگان
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