π-扩展的Ru-COUBPY光敏剂用于使用单光子780nm近红外光的抗癌光疗
Diego Abad-Montero1, Eduardo Izquierdo-García1, Pierre Mesdom2
1Departament de Química Inorgànica i Orgànica, Secció de Química Orgànica, Universitat de Barcelona (UB), Institut de Biomedicina de la Universitat de Barcelona (IBUB), Martí i Franquès 1-11, E-08028 Barcelona, Spain.
Journal of the American Chemical Society
|December 8, 2025
概括
新的复合物通过近红外光激活,用于有效的光动力学癌症治疗. 这些化合物在细胞和体内表现出强大的抗瘤活性,甚至在低氧条件下,推进癌症治疗选择.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
- 生物医学工程 生物医学工程
背景情况:
- 光动力疗法 (PDT) 提供向癌症治疗,但受到深红色和近红外 (NIR) 光低效激活的光敏化剂 (PSs) 的限制.
- 尼尔红外线提供优异的组织透和减少光损伤,使其成为治疗更深层瘤的理想选择.
- 在NIR区域开发可激活的新型PS对于推进PDT临床应用至关重要.
研究的目的:
- 在NIR区域设计和合成具有增强吸收的新型鲁(II) 聚烯基复合物.
- 评估这些复合物的光物理性质,反应性氧物种生成和光毒性.
- 评估用于光动力学癌症治疗的复合物的体内疗效.
主要方法:
- 使用维尼龙化和后协调联结体组装合成 (II) 聚烯基复合物 (Ru4-7).
- 光物理性质的表征,包括吸收光谱和光稳定性.
- 在各种辐射波长下对CT-26结直肠癌细胞进行体外光毒性测定.
- 在小鼠体内研究,以评估治疗复合体后的瘤生长抑制 (Ru6).
主要成果:
- 新型Ru(II) 复合物 (Ru4-7) 与π-扩展的配体呈现出增强的摩尔吸收性和红移吸收到NIR区域.
- 复杂的高效生成的I型和II型反应性氧物种.
- 在深红色和NIR照射下CT-26细胞中观察到强大的纳米分子光毒性,包括缺氧条件.
- 复合物Ru6在小鼠体内表现出显著的抗瘤活性,在660和780nm光线下抑制瘤生长.
结论:
- 这种新型的复合体代表了光敏剂设计在光动力学治疗中的重大进步.
- 这些复合物在深红色和NIR光下有效,为治疗深层和缺氧瘤提供了潜在的潜力.
- 复合体Ru6显示出作为下一代光敏感剂的承诺,用于光动力学癌症治疗中的临床转化.
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