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尼克洛萨米德封装的pH响应的多维特块共聚物用于癌症治疗.

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  • 1Centre for Biomedical Engineering, Indian Institute of Technology Delhi, India.

Macromolecular bioscience
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概括

这项研究开发了pH响应的聚维特里纳米粒子,以改善抗癌药物尼古洛萨米德 (NIC) 的输送. 新型纳米颗粒有效地将NIC传递给癌细胞,显示出有希望的抗癌疗效和全身性疾病治疗的潜力.

关键词:
区块共聚合物 区块共聚合物癌症治疗疗法 癌症治疗具有pH响应性的这就是Zwitterionic Micelles.

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科学领域:

  • 生物材料科学 生物材料科学
  • 纳米技术纳米技术
  • 癌症治疗方法 癌症治疗方法

背景情况:

  • 尼克洛萨米德 (NIC) 通过向关键信号通路,如STAT3,Wnt/β-catenin和NF-κB,表现出显著的抗瘤活性.
  • 由于NIC的水溶性较差和生物可用性较低,其治疗潜力受到严重限制,这阻碍了其在全身性疾病治疗中的使用.

研究的目的:

  • 合成新型的pH响应区块共聚合物,以增强尼克洛萨米德 (NIC) 的递送.
  • 为改善抗癌剂的生物可用性和向性输送开发聚乙烯纳米颗粒.

主要方法:

  • 通过环开聚合和原子转移激素聚合,合成一个对pH值敏感的区块共聚合物,聚L-乳化物-区块-聚2-二甲基酸 (PLLA-b-PDMAEMA),通过环开聚合和原子转移基聚合.
  • 将PLLA-b-PDMAEMA四级化,以产生PLLA-b-PDMAEMA-Q,然后在PBS缓冲器中转换为多基相应物 (PLLA-b-PDMAEMA-ZIP).
  • 将NIC封装成PLLA-b-PDMAEMA-ZIP纳米颗粒 (ZIP-NIC) 并评估它们的形态,大小,HCT116细胞中的细胞吸收以及体外抗癌功效.

主要成果:

  • 合成的PLLA-b-PDMAEMA-Q共聚物在水溶液中自组装成 (79-107nm).
  • 装有NIC的多晶基纳米粒子 (ZIP-NIC) 呈现球形形态 (230 ± 15.81 nm) 并显示在HCT116癌细胞中显著吸收.
  • 在HCT116细胞系中,ZIP-NIC显示出与自由NIC相比的抗癌疗效,表明药物输送成功.

结论:

  • 多聚菌纳米颗粒代表了一个有前途的平台,可以有效地提供像尼克洛萨米德这样的溶性较差的抗癌药物.
  • 开发的纳米粒子系统展示了克服生物可用性挑战和改善系统性癌症治疗的治疗结果的潜力.