Volume 128, Issue 6 pp. 2042-2046
Zuschrift

Tetrazole Photoclick Chemistry: Reinvestigating Its Suitability as a Bioorthogonal Reaction and Potential Applications

Dr. Zhengqiu Li

Dr. Zhengqiu Li

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore

College of Pharmacy, Jinan University, Guangzhou, 510632 China

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Linghui Qian

Linghui Qian

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore

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Prof. Dr. Lin Li

Prof. Dr. Lin Li

Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University, Nanjing, 211816 China

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Dr. Jan C. Bernhammer

Dr. Jan C. Bernhammer

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore

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Prof. Dr. Han Vinh Huynh

Prof. Dr. Han Vinh Huynh

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore

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Prof. Dr. Jun-Seok Lee

Prof. Dr. Jun-Seok Lee

Molecular Recognition Research Center, Korea Institute of Science and Technology, Department of Biological Chemistry, University of Science & Technology, Republic of Korea

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Prof. Dr. Shao Q. Yao

Corresponding Author

Prof. Dr. Shao Q. Yao

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore

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First published: 07 December 2015
Citations: 47

Abstract

The bioorthogonality of tetrazole photoclick chemistry has been reassessed. Upon photolysis of a tetrazole, the highly reactive nitrile imine formed undergoes rapid nucleophilic reaction with a variety of nucleophiles present in a biological system, along with the expected cycloaddition with alkenes. The alternative use of the tetrazole photoclick reaction was thus explored: tetrazoles were incorporated into Bodipy and Acedan dyes, providing novel photo-crosslinkers with one- and two-photon fluorescence Turn-ON properties that may be developed into protein-detecting biosensors. Further introduction of these photo-activatable, fluorogenic moieties into staurosporine resulted in the corresponding probes capable of photoinduced, no-wash imaging of endogenous kinase activities in live mammalian cells.

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