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- W2901874166 abstract "Herein, a single highly selective DNA nanoprobe was designed and created for the real-time imaging and simultaneous quantification of two kinds of biological species using Ca2+ and pH; the molecules were selected as models because of their close relationship with cellular functions and diseases. A Ca2+ fluorescent probe was synthesized and assembled onto a DNA nanostructure together with pH-responsive, inner-reference, and mitochondria-targeted molecules. This nanoprobe with high spatial resolution, together with long-term fluorescent and structural stability, powerfully tracked pH and Ca2+ dynamics at the same localization in mitochondria in response to O2•–-induced oxidative stress and aggregated amyloid β (Aβ) stimulation with a temporal resolution of milliseconds. Using this tool, we discovered that O2•– and Aβ triggered transitory cytoplasmic acidosis and then activated acid-sensing ion channel 1a (ASIC1a) in the mitochondrial membrane, leading to mitochondrial Ca2+ overload and pH abnormalities, which contribute to neuron death. Moreover, psalmotoxin 1 effectively protected against O2•–- and Aβ-induced neuron injury." @default.
- W2901874166 created "2018-11-29" @default.
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- W2901874166 date "2018-11-12" @default.
- W2901874166 modified "2023-10-16" @default.
- W2901874166 title "Mitochondria-Targeted DNA Nanoprobe for Real-Time Imaging and Simultaneous Quantification of Ca<sup>2+</sup> and pH in Neurons" @default.
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- W2901874166 doi "https://doi.org/10.1021/acsnano.8b06322" @default.
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