期刊
DALTON TRANSACTIONS
卷 48, 期 46, 页码 17200-17209出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9dt03453f
关键词
-
资金
- National Natural Science Foundation of China (NSFC) [21701113]
- Natural Science Foundation of SZU [2018036]
- Peacock Talent Fund [827-000389]
- NSFC [21671137]
- Guangdong Natural Science foundation [2017A030310132]
- Instrumental Analysis Center of Shenzhen University (Xili Campus)
Mitochondrial pH is known to be alkaline (near 8.0) and has emerged as a potential factor for mitochondrial function and disorder. Here we investigate two pairs of isomeric phosphorescent Ir(iii) complexes (1-4) that show mitochondrial pH-responsive properties and induce mitochondrial dysfunction during photodynamic therapy. These complexes are designed to function by controlling the protonation of the benzimidazole and carboxyl groups. 1 and 2 exhibit enhanced emission intensity and a blue-shift emission change in response to pH alterations from 6.0 to 8.0. They have ideal pK(a) values (7.49 for 1 and 7.41 for 2) and show mitochondria-specific phosphorescence staining in situ, thereby allowing the monitoring of mitochondrial pH in live cells. 3 and 4 produce abundant intracellular ROS and exhibit high phototoxicities against cancer cells. Interestingly, these pH-responsive probes can be utilized to monitor the change in mitochondrial pH and mitochondrial damage during photodynamic therapy (PDT), which provides a convenient method for the in situ monitoring of therapeutic effects and the assessment of treatment outcomes.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据