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相关概念视频

Total Internal Reflection Fluorescence Microscopy01:05

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Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.
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多旋转器和多结合的集成:超高吸收系数染料使NIR-II光成像引导光热免疫疗法

Guining Cao1, Jiacheng Tang1, Meijing Wang1

  • 1School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong, 510060, China.

Small (Weinheim an der Bergstrasse, Germany)
|August 21, 2025
PubMed
概括
此摘要是机器生成的。

本研究介绍了用于近红外II光热免疫治疗的TPE-CyA纳米粒子. 这些纳米颗粒通过诱导免疫细胞死亡和激活全身免疫力,有效抑制瘤生长和转移.

关键词:
NIR-II 氨酸分子在 NIR-II 光热材料光成像光热免疫疗法瘤转移

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科学领域:

  • 生物医学工程
  • 纳米技术
  • 癌症研究

背景情况:

  • 癌细胞累积突变,导致免疫逃生.
  • 光热免疫疗法触发免疫细胞死亡 (ICD) 并释放新抗原.
  • 近红外II (NIR-II) 区域为深层组织成像和治疗提供了优势.

研究的目的:

  • 设计用于NIR-II光热免疫疗法的新分子.
  • 评估TPE-CyA纳米颗粒在癌症治疗和成像中的有效性.
  • 研究NIR-II光热免疫疗法的免疫调节作用.

主要方法:

  • 基于"多旋转器和多结合"概念设计的NIR-II分子.
  • 合成和特征的TPE-CyA纳米粒子 (TPE-CyANP).
  • 在体内进行NIR-II光成像,血管学和光热免疫治疗时评估的TPE-CyANP.

主要成果:

  • TPE-CyA具有较高的摩尔灭系数和光热转换效率.
  • 通过TPE-CyANP实现了高分辨率的NIR-II成像和血管造影.
  • 通过成像指导的TPE-CyANP抑制了双边瘤生长和肝转移,诱导了ICD和全身免疫.

结论:

  • TPE-CyA纳米粒子是NIR-II光热免疫疗法的有前途的策略.
  • 这种方法激活抗瘤免疫力,防止转移和复发.
  • 强调NIR-II光热疗法在癌症治疗和免疫激活方面的潜力.