共查询到18条相似文献,搜索用时 78 毫秒
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细胞内的H+在生理及病理过程中发挥着至关重要的作用。因此,研究细胞内的H+具有重要的理论和实践意义。荧光法由于其非破坏性,高的灵敏度和选择性,以及广泛可用的荧光染料在测定pH时比其他方法更具优越性。文章以不同的荧光团分类:香豆素、荧光素、罗丹明、BODIPY、花菁、双光子染料等,按pKa从小到大的顺序排列,综述了近十年来,荧光小分子pH探针的研究进展。 相似文献
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文章主要介绍近年来罗丹明衍生物在分子探针方面研究的一些新进展,系统阐述了该类探针分子在离子和小分予检测方面的应用. 相似文献
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主要对近年来测定细胞内游离Zn^2+的荧光探针进行较详细地评述,并对其化学规律、性质和其优缺点进行了讨论。 相似文献
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锌离子荧光探针研究进展 总被引:1,自引:0,他引:1
综述了近年来用于检测锌离子的荧光探针的研究进展,重点介绍了基于喹啉、荧光素和腙合成的锌离子荧光探针的结构和设计原理,概述了这些锌离子荧光探针在检测过程中的优点及其实际应用价值,并展望了这些锌离子荧光探针的研究和发展方向。 相似文献
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该文综述了近年来有机单、双光子线粒体内H_2S、SO_2、巯基、多硫化氢及苯硫酚活性硫物种(RSS)荧光探针研究现状,重点讨论了荧光探针选择性、灵敏度、识别机理、细胞毒性以及生物监测成像等方面的性能,并提出这类荧光探针存在的问题以及未来的发展趋势,旨在为构建新型线粒体荧光探针和进一步剖析线粒体内RSS的细胞学功能提供重要的理论和实践意义。 相似文献
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荧光探针是一种会对pH、温度、特定的物质产生荧光响应的分子。荧光探针由3个基本单元:荧光基团、连接体和识别基团组成。荧光基团具有讯号传递功能,能直接影响到探针对检测对象的敏感性。识别基因作为一种具有特定或识别作用的结构,其特征在于其高度的选择性和特异性。连接体就是在荧光基团和识别基团之间起到衔接的作用。谷胱甘肽(GSH)是由谷氨酸、半胱氨酸和甘氨酸构成的三肽类物质。它在抗HIV、抗过敏、保护巯基酶的活性以及抗氧化和维持体内血红球蛋白表面细胞膜的结构稳定性等方面有着重要作用,并且它还可以用作食品添加剂,广泛应用于环境监测。基于此,开发以谷胱甘肽为被测物质的多功能或多通道的荧光探针分子就成了一项具有挑战性的新任务。主要叙述了基于谷胱甘肽的荧光探针的设计合成和使用方面的最新进展。 相似文献
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对近年来测定细胞内游离Zn2 的荧光探针进行较详细地评述,主要包括喹啉类、荧光素及其衍生物类、肽和蛋白类荧光探针;并对其化学规律、性质和优缺点进行了讨论。 相似文献
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Dr. Pankaj E. Hande Manjari Mishra Fariyad Ali Dr. Shobhna Kapoor Prof. Dr. Anindya Datta Prof. Dr. Santosh J. Gharpure 《Chembiochem : a European journal of chemical biology》2020,21(10):1492-1498
Intracellular pH plays a significant role in many pathological and physiological processes. A series of quinoline-pyrene probes were synthesized in one-step fashion through an oxonium-ion-triggered alkyne carboamination sequence involving C−C, C−O and C−N bond formation for intracellular pH sensing. The quinoline-pyrenes showed significant red shifts at low pH. Fluorescence lifetime decay measurements of the probes showed decreases in lifetime at pH 4. The probes showed excellent selectivity in the presence of various potential interfering agents such as amino acids and cations/anions. Furthermore, the probes were found to show completely reversible emission behaviour in the window between pH 4 and 7. A morpholine-substituted quinoline-pyrene probe efficiently stained lysosomes with high Pearson correlation coefficients (0.86) with Lysotracker Deep Red DND-99 as a reference. A co-localization study of the probe with Lysotracker DND-99 showed selective intracellular targeting and a shift in fluorescence emission due to acidic lysosomal pH. 相似文献
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Jia Zhou Wei Du Tao Shao Zheng Li Duoteng Zhang Lan Wang Zhijie Fang Jie Li Qiong Wu Chengwu Zhang Lin Li 《Chembiochem : a European journal of chemical biology》2022,23(14):e202200217
Impaired mitophagy hinders the clearance of damaged mitochondria, inducing pathological states. Knowledge of this phenomenon is key to diagnosing certain diseases and understanding their pathogenesis. Mitophagy involves an acidization process that could serve as an ideal detection target. In this work, we designed and synthesized a mitochondrial-targeting fluorescence probe, Z2 , for evaluating pH variation. This probe exhibited remarkable “turn-on” fluorescence under acidic conditions. In biological applications, Z2 showed a strong, specific pH detection capacity in Parkin-overexpressing HeLa cells during the mitophagy process. The “turn-on” fluorescence property of Z2 was also used to detect pH variations in Caenorhabditis elegans. This probe, as a novel pH assessment tool, may facilitate further research of mitophagy-associated pathological patterns. 相似文献
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对近年来测定细胞内游离Zn2 的荧光探针进行了较详细的评述,并对其化学规律、性质和优缺点进行了讨论. 相似文献
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Small-molecule fluorescent probes for hypochlorous acid (HOCl), one of the poorly understood reactive oxygen species (ROS), help to unveil HOCl functions in health and disease. Numerous small-molecule HOCl fluorescent probes have been developed in the past decade. Nevertheless, only a portion of them demonstrated their practical applications in biomedical research because of common problems in selectivity, sensitivity, chemostability, and photostability, etc. The problems could be addressed by a combination of rational probe design and careful selection of fluorophore templates. In this review, we describe several classes of representative HOCl fluorescent probes based on their fluorophore templates, and we discuss their design strategies, photophysical properties, and biological applications. A comprehension of their strengths, weaknesses, and common uses will facilitate the development of ideal HOCl assays and the discovery of novel biological processes. 相似文献