综合性酸二胺及其生物结合用于同时成像,跟踪和向光动力疗法
Yao-Lin Lee1, Yi-Te Chou2, Bo-Kang Su1
1Department of Chemistry, National Taiwan University, 10617 Taipei, Taiwan.
Journal of the American Chemical Society
|September 7, 2022
概括
这项研究合成了具有可调节光物理性质的新型二二胺 (PDI). 这些化合物具有光追踪能力,具有针对性的光动力疗法和体内癌症治疗的潜力.
科学领域:
- 有机化学
- 光物理学
- 材料科学
- 生物医学工程
背景情况:
- 烯基四碳二胺 (PDI) 衍生物因其光物理性质而受到广泛研究.
- PDI染色体的化可以显著改变它们的电子和光学特性.
- 开发针对癌症的向疗法仍然是医学界的一个重大挑战.
研究的目的:
- 合成和表征一系列具有不同数量的团的烯二胺 (PDI) 衍生物.
- 研究这些新型PDI化合物的光物理性质,包括吸收,排放和激发状态动态.
- 评估PDI衍生品针对癌症治疗的潜力,特别是光动力疗法 (PDT) 和体内抗瘤活性.
主要方法:
- 通过替代PDI的化合成烯二胺基 (PDI) 衍生物 (1S-PDI-D,2S-PDI-D,3S-PDI-D,4S-PDI-D).
- 包括吸收和短暂吸收光谱的光物理特征.
- 两个光子吸收 (TPA) 的测量.
- 五秒暂时吸收光谱研究系统间交叉 (ISC) 率.
- 三重状态能量的计算.
- 使用A549肺癌细胞和正常肺细胞进行体外细胞识别研究.
- 在A549异种移植小鼠的体内抗瘤疗效研究.
主要成果:
- 一系列的-PDI已成功合成,其光物理性质可以根据基数调节.
- 增加的化导致红移吸收和过渡禁止的最低激发状态 (S1 ((nπ*)).
- 化合物表现出优异的两光子吸收截面 (> 800 GM) 和高效的系统间交叉 (> 10^12 s^-1),导致近100%的三重体群.
- 经过修改的PDI衍生物 (1S-FC131,Cy5-1S-FC131) 显示出对A549癌细胞的选择性识别和有效的光动力疗法.
- 在体内研究表明,Cy5-1S- FC131具有显著的抗瘤活性,同时提供光追踪和向PDT.
结论:
- 化是一种有效的策略来调整PDI染色体的光物理性质.
- 新型-PDI衍生物具有优良的光物理特性,适用于光动力疗法应用.
- 开发的合PDI衍生物具有针对性癌症治疗的高潜力,结合了诊断成像和治疗能力.
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