基于盐酸铁 (III) 复合物的pH敏感光化学传感器启动:合成,光物理特性和活细胞成像应用
Nicole Nilo1, Mauricio Reyna-Jeldes2,3, Alejandra A Covarrubias3,4,5
1Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso 2373223, Chile.
Molecules (Basel, Switzerland)
|November 14, 2023
概括
这项研究合成了作为光探针的铁复合物 (C1). 它检测pH和乳酸盐的变化,通过突出代谢差异来显示癌细胞的成像潜力.
科学领域:
- 协调化学 协调化学
- 化学传感器 化学传感器
- 生物医学成像技术 生物医学成像技术
背景情况:
- 细胞pH调节对于正常功能至关重要;不平衡与癌症有关.
- 开发用于pH和代谢分析物的敏感探针对于癌症研究至关重要.
研究的目的:
- 为了合成和表征一种新的铁 (III) 复合物 (C1) 作为化学传感器的潜在用途.
- 评估C1检测生理相关分析物的能力,特别是细胞内pH值和癌细胞中的代谢变化.
主要方法:
- 铁 (III) 复合物的合成和X射线衍射分析 (C1).
- 用各种分析剂对C1进行光谱评估 (吸收和排放).
- 密度函数理论 (DFT) 计算用于机制阐明.
- 胃癌 (AGS,MKN-45,MKN-74) 和非瘤 (GES-1) 细胞系中的细胞内pH和代谢传感.
主要成果:
- 复合体C1对氧化物离子 (OH−) 呈现光激活反应,检测极限低 (3.97 × 10−9 M).
- 与AGS癌细胞相比,C1在非瘤GES-1细胞中显示出差异性光激活,与细胞内pH相关.
- 在转移性癌症细胞系 (MKN-45,MKN-74) 中观察到光激活,与细胞内乳酸盐水平增加有关.
结论:
- 合成的铁 (III) 复合体C1作为pH和乳酸盐的敏感光探针起作用.
- C1显示出作为一种代谢探针的潜力,用于区分癌细胞和成像代谢变化.
- 这些发现为使用C1用于先进的癌细胞成像应用提供了洞察力.
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