Volume 133, Issue 9 pp. 4957-4964
Forschungsartikel

Bio-Coreactant-Enhanced Electrochemiluminescence Microscopy of Intracellular Structure and Transport

Dr. Cheng Ma

Dr. Cheng Ma

State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023 P. R. China

These authors contributed equally to this work.

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Shaojun Wu

Shaojun Wu

State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023 P. R. China

These authors contributed equally to this work.

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Dr. Yang Zhou

Dr. Yang Zhou

School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164 USA

These authors contributed equally to this work.

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Hui-Fang Wei

Hui-Fang Wei

State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023 P. R. China

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Prof. Dr. Jianrong Zhang

Prof. Dr. Jianrong Zhang

State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023 P. R. China

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Dr. Zixuan Chen

Corresponding Author

Dr. Zixuan Chen

State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023 P. R. China

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Prof. Dr. Jun-Jie Zhu

Prof. Dr. Jun-Jie Zhu

State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023 P. R. China

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Prof. Dr. Yuehe Lin

Corresponding Author

Prof. Dr. Yuehe Lin

School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164 USA

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Dr. Wenlei Zhu

Corresponding Author

Dr. Wenlei Zhu

School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164 USA

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First published: 14 November 2020
Citations: 24

Abstract

A bio-coreactant-enhanced electrochemiluminescence (ECL) microscopy realizes the ECL imaging of intracellular structure and dynamic transport. This microscopy uses Ru(bpy)32+ as the electrochemical molecular antenna connecting extracellular and intracellular environments, and uses intracellular biomolecules as the coreactants of ECL reactions via a “catalytic route”. Accordingly, intracellular structures are identified without using multiple labels, and autophagy involving DNA oxidative damage is detected using nuclear ECL signals. A time-resolved image sequence discloses the universal edge effect of cellular electroporation due to the influence of the geometric properties of cell membranes on the induced transmembrane voltage. The dynamic transport of Ru(bpy)33+ in the different cellular compartments unveils the heterogeneous intracellular diffusivity correlating with the actin cytoskeleton. In addition to single-cell studies, the bio-coreactant-enhanced ECL microscopy is used to image a slice of a mouse liver and a colony of Shewanella oneidensis MR-1.

Conflict of interest

The authors declare no conflict of interest.

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