Volume 135, Issue 2 e202215215
Forschungsartikel

Enabling Photo-Crosslinking and Photo-Sensitizing Properties for Synthetic Fluorescent Protein Chromophores

Huan Feng

Huan Feng

CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023 China

University of Chinese Academy of Sciences, Beijing, 100049 China

These authors contributed equally to this work.

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Prof. Qun Zhao

Prof. Qun Zhao

CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023 China

These authors contributed equally to this work.

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Beirong Zhang

Beirong Zhang

CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023 China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Hang Hu

Hang Hu

Department of Chemistry, University of Washington, Seattle, WA 98195 USA

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Meng Liu

Meng Liu

University of Chinese Academy of Sciences, Beijing, 100049 China

State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023 China

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Prof. Kaifeng Wu

Prof. Kaifeng Wu

State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023 China

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Prof. Xiaosong Li

Prof. Xiaosong Li

Department of Chemistry, University of Washington, Seattle, WA 98195 USA

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Prof. Xin Zhang

Corresponding Author

Prof. Xin Zhang

Department of Chemistry and Westlake Laboratory of Life Sciences and Biomedicine, Westlake University, 18 Shilongshan Road, Hangzhou, 310024 China

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Prof. Lihua Zhang

Corresponding Author

Prof. Lihua Zhang

CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023 China

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Prof. Yu Liu

Corresponding Author

Prof. Yu Liu

CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023 China

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First published: 12 November 2022

Abstract

Synthetic fluorescent protein chromophores have been reported for their singlet state fluorescence properties and applications in bioimaging, but rarely for the triplet state chemistries. Herein, we enabled their photo-sensitizing and photo-crosslinking properties through rational modulations. Extension of molecular conjugation and introduction of heavy atoms promoted the generation of reactive oxygen species. Unlike other photosensitizers, these chromophores selectively photo-crosslinked aggregated proteins and uncovered the interactome profiles. We also exemplified their general applications in chromophore-assisted light inactivation, photodynamic therapy and photo induced polymerization. Theoretical calculation, pathway analysis and transient absorption spectroscopy provided mechanistic insights for this triplet state chemistry. Overall, this work expands the function and application of synthetic fluorescent protein chromophores by enabling their triplet excited state properties.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

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