使用对细菌的光动力学无活化 (II) 复合物与甲基酸盐和类联体
Raval Devraj Prakashchandra1, Rohit Rai2, Arif Ali Mandal3
1Department of Fluoro-Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, Telangana, India.
Chembiochem : a European journal of chemical biology
|November 20, 2024
概括
新的 (II) 复合物显示出强烈的光激活抗菌活性,对抗金黄色葡萄球菌和大肠杆菌. 这些金属复合体为开发新型抗菌光动力学疗法而没有暗毒性提供了有希望的途径.
科学领域:
- 协调化学 协调化学
- 摄影化学的使用.
- 抗菌剂 抗菌剂 抗菌剂
背景情况:
- 光动力失活 (PDI) 使用光激活化合物来对抗细菌感染.
- 金属复合物为PDI应用提供可调节的特性.
- 开发用于抗菌PDI的新型非宏环金属复合物是一个活跃的研究领域.
研究的目的:
- 为抗菌光动力学疗法合成和表征新型混合联体 (II) 复合物.
- 评估这些复合物的光稳定性,光吸收和抗菌功效.
- 调查作用机制,重点关注单点氧气生成.
主要方法:
- 六个[Ni(NN) 2 ((L) ]复合物的合成,其中NN = 类衍生物和L = катехол或 esculetin.
- 对可见光谱 (400-700 nm) 中的光稳定性和光吸收性复合物的表征.
- 使用最小抑制度 (MIC) 值,对黄金葡萄球菌和大肠杆菌进行光动态失活活性的评估.
主要成果:
- 合成的 (II) 复合物在溶液中表现出良好的稳定性,并吸收可见光.
- 在暴露于光线时,观察到Gram-positive (S. aureus) 和Gram-negative (E. coli) 细菌的显著光动力学失活.
- MIC值在0.31-9.49μM之间,没有观察到暗中毒性.
- 抗菌作用归因于光诱导的单片氧物种的产生.
结论:
- 本研究介绍了设计用于光触发抗菌活性的 (II) 复合物的第一个例子.
- 开发的复合物显示出抗菌光动力疗法 (PDT) 的潜力.
- 这些发现为未来PDT应用中基于Ni (II) 的非宏环复合物铺平了道路.
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