阿霉素
体内
黑色素瘤
药物输送
化学
癌症研究
药理学
纳米医学
医学
材料科学
化疗
纳米技术
生物
纳米颗粒
内科学
生物技术
有机化学
作者
Sudip Mukherjee,Rajesh Kotcherlakota,Shagufta Haque,Debapriya Bhattacharya,Jerald Mahesh Kumar,Sumana Chakravarty,Chitta Ranjan Patra
标识
DOI:10.1016/j.msec.2019.110375
摘要
Efficient delivery of chemotherapeutic drugs to tumor cells is one of the crucial issues for modern day cancer therapy. In this article, we report the synthesis of poly ethylene glycol (PEG) assisted colloidal platinum nanoparticles (PtNPs) by borohydride reduction method at room temperature. PtNPs are stable at room temperature for more than 2 years and are stable in serum and phosphate buffer (pH = 7.4) solution for one week. PtNPs show biocompatibility in different normal cell lines (in vitro) and chicken egg embryonic model (ex vivo). Further, we designed and fabricated PtNPs-based drug delivery systems (DDS: PtNPs-DOX) using doxorubicin (DOX), a FDA approved anticancer drug. Various analytical techniques were applied to characterize the nanomaterials (PtNPs) and DDS (PtNPs-DOX). This DDS exhibits inhibition of cancer cell (B16F10 and A549) proliferation, observed by different in vitro assays. PtNPs-DOX induces apoptosis in cancer cells observed by annexin-V staining method. Intraperitoneal (IP) administration of PtNPs-DOX shows substantial reduction of tumor growth in subcutaneous murine melanoma tumor model compared to control group with free drug. Up-regulation of tumor suppressor protein p53 and down regulation of SOX2 and Ki-67 proliferation markers in melanoma tumor tissues (as observed by immunofluorescence and western blot analysis) indicates probable molecular mechanism for the anticancer activity of DDS. Considering the in vitro and pre-clinical (in vivo) results in murine melanoma, it is believed that platinum nanoparticle-based drug delivery formulation could be exploited to develop an alternative therapeutic nanomedicine for cancer therapy in the near future.
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