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由NIR触发的NO生产与用于瘤治疗的光动力疗法相结合

Zhiyuan Lin¹, Tao Zhu¹, Xiaoqin Zhong¹

¹School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China.

Photodiagnosis and photodynamic therapy

|August 21, 2024

概括

这项研究引入了一种结合光动力学疗法 (PDT) 与氧化 (NO) 气体治疗的新型癌症治疗方法. 使用上转化纳米颗粒的协同方法与单独的PDT相比,显著增强了抗瘤效应.

科学领域:

生物医学工程生物医学工程
纳米技术纳米技术
癌症治疗癌症治疗

背景情况:

光动力学疗法 (PDT) 面临着由于光透性差和组织缺氧而存在的局限性.
近红外光在PDT中提供了比蓝紫或红光更好的组织透.

研究的目的:

开发一种协同的癌症疗法,将近红外光触发的PDT与基于氧化 (NO) 的气体疗法相结合.
通过利用PDT和NO治疗的联合作用来增强抗瘤疗效.

主要方法:

合成的上转化纳米粒子 (UCNP) 基纳米复合材料加载有光敏感剂 (ZnPc) 和NO捐赠剂 (l-arginine).
利用980nm激光照射触发PDT的反应性氧物种 (ROS) 生产和从l-arginine产生NO.
通过体外和体内实验来评估联合治疗的疗效.

主要成果:

在激光照射下,纳米复合材料成功地通过l-arginine通过PDT产生ROS和NO.
氧化显示出强大的瘤杀伤作用,增强PDT诱导的细胞死亡.
与单独的PDT相比,联合PDT和NO疗法在体外和体外模型中显著改善了瘤抑制.

结论:

开发的基于UCNP的协同作用系统有效地结合了PDT和NO气体疗法,以增强抗瘤效果.
这种方法克服了传统PDT的局限性,利用近红外光和NO.
UCNP纳米复合材料显示出在生物医学中用于瘤抑制的广泛应用的希望.

关键词:

结合疗法是一种联合疗法.没有,没有治疗.通过近红外光控制的NO释放.氧化氧化是什么?光动力学疗法是一种光动力学疗法.向上转换纳米粒子

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