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PLGA nanocomposites loaded with verteporfin and gold nanoparticles for enhanced photodynamic therapy of cancer cells

机译:载有Verteporfin和金纳米颗粒的PLGA纳米复合材料,用于增强癌细胞的光动力学治疗

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摘要

In this paper, PLGA nanocomposites were developed by incorporating a photosensitizer, verteporfin and gold nanoparticles into the polymeric matrix and utilised for enhanced photodynamic therapy of cancer cells. Both enhanced fluorescence and O-1(2) generation from verteporfin were observed in this new formulation under both 425 nm LED and 405 nm laser illumination. A maximum enhancement factor of 2.5 for fluorescence and 1.84 for O-1(2) generation was obtained when the molar ratio of gold : VP was 5 : 1 and excited at 425 nm, compared with PLGA doped with verteporfin alone. The experiment results could be explained by the local electric field enhancement of gold nanoparticles. Furthermore, improved therapeutic efficacy in human pancreatic cancer cells, PANC-1, was also demonstrated by using this new formulation following light exposure, indicating the utility of these nanocomposites for enhanced photodynamic therapy.
机译:本文通过将光敏剂,verteporfin和金纳米颗粒掺入聚合物基质中并用于增强癌细胞的光动力学治疗来开发PLGA纳米复合材料。 在该新配方中,在425nm LED和405nm激光照射下,在该新配方中观察到从verteporfin产生的增强荧光和O-1(2)。 当Gold的摩尔比为5:1时,获得荧光的最大增强因子2.5对于O-1(2)产生的1.84生成,并在425nm以425nm激发,与单独掺杂有Verteporfin的PLGA相比。 实验结果可以通过金纳米颗粒的局部电场增强来解释。 此外,还通过使用曝光后的这种新的配方来证明通过使用这种新的配方,提高了人胰腺癌细胞中的治疗效果,表明这些纳米复合材料用于增强的光动力疗法的效用。

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  • 来源
    《RSC Advances》 |2016年第113期|共10页
  • 作者单位

    Macquarie Univ Ctr Excellence Nanoscale Biophoton Sydney NSW 2109 Australia;

    Macquarie Univ Ctr Excellence Nanoscale Biophoton Sydney NSW 2109 Australia;

    Macquarie Univ Ctr Excellence Nanoscale Biophoton Sydney NSW 2109 Australia;

    Macquarie Univ Ctr Excellence Nanoscale Biophoton Sydney NSW 2109 Australia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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