四个循环金属化Ir(iii) 复合物及其发光,细胞毒性和DNA/BSA结合性能的见解
Qianshui Yu1, Shunxin Gu1, Xinda Yang2
1School of Environmental and Chemical Engineering, Jiangsu OceanUniversity Lianyungang 222005 P. R. China jiangqin@jou.edu.cn shipf@jou.edu.cn.
RSC advances
|September 23, 2024
概括
新的 (III) 复合物显示在光线下增强了癌细胞的杀死. 这些光动力学剂产生反应性氧物种并与DNA相互作用,为向癌症治疗提供了潜在的潜力.
科学领域:
- 协调化学 协调化学
- 光动力学疗法 光动力学疗法
- 生物有机化学 生物有机化学
背景情况:
- 循环金属化 (III) 复合物正在被探索用于光动力学应用.
- 连接物设计影响光物理性质和生物活性.
- 用光激活剂向癌细胞需要了解细胞相互作用.
研究的目的:
- 合成和表征新型环金属化Ir (III) 复合物.
- 研究它们的光物理性质,包括两光子的吸收和发射.
- 评估它们作为光动力学剂对抗MCF-7乳腺癌细胞的有效性,以及它们与DNA和BSA等生物分子的相互作用.
主要方法:
- 合成和表征四个Ir (III) 复合体.
- 光物理测量 (吸收,发射,Z扫描,两光子激发光).
- 细胞活力测试 (MCF-7细胞),反应性氧物种 (ROS) 检测,DNA结合研究和牛血清白蛋白 (BSA) 相互作用分析.
主要成果:
- 所有复合体都显示了MLCT吸收和广发射;Ir1A显示了两光子吸收 (890 nm的215 GM) 和TPEF (567 nm).
- 在光照照射下增强了对MCF-7细胞的细胞生长抑制,Ir1B显示出最高的光毒性 (>50PI).
- 不同的ROS生成 (Ir2A: 1O2,Ir1A: O2 ̇-);Ir1A和Ir2A由于结和连接体平面性而显示出更高的DNA亲和力.
结论:
- 合成的Ir(III) 复合物具有有前途的光物理特性和对癌细胞的光动力学活性.
- 复合体Ir1A和Ir2A具有显著的DNA结合能力.
- 这些发现突显了这些Ir(III) 复合物的潜力,用于光动力癌症治疗和作为生物分子相互作用的探针.
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