Volume 60, Issue 16 pp. 9093-9098
Research Article

Activation of Pyroptosis by Membrane-Anchoring AIE Photosensitizer Design: New Prospect for Photodynamic Cancer Cell Ablation

Min Wu

Min Wu

Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585 Singapore

These authors contributed equally to this work.

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Xingang Liu

Xingang Liu

Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585 Singapore

These authors contributed equally to this work.

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Huan Chen

Huan Chen

Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585 Singapore

These authors contributed equally to this work.

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Yukun Duan

Yukun Duan

Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585 Singapore

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Jingjing Liu

Jingjing Liu

Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585 Singapore

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Yutong Pan

Yutong Pan

Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585 Singapore

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Prof. Bin Liu

Corresponding Author

Prof. Bin Liu

Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585 Singapore

Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207 China

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First published: 04 February 2021
Citations: 237

Graphical Abstract

Membrane anchoring photosensitizers with aggregation-induced emission (AIE) characteristics were designed for cancer cell ablation via photo-activated pyroptosis.

Abstract

Pyroptosis as a lytic and inflammatory form of cell death is a powerful tool to fight against cancer. However, pyroptosis is usually activated by chemotherapeutic drugs, which limits its anti-tumor applications due to drug resistance and severe side effects. Herein, we demonstrate that membrane targeting photosensitizers can induce pyroptosis for cancer cell ablation with noninvasiveness and low side effects. A series of membrane anchoring photosensitizers (TBD-R PSs) with aggregation-induced emission (AIE) characteristics were prepared through conjugation of TBD and phenyl ring with cationic chains. Upon light irradiation, cytotoxic ROS were produced in situ, resulting in direct membrane damage and superior cancer cell ablation. Detailed study revealed that pyroptosis gradually became the dominant cell death pathway along with the increase of TBD-R PSs membrane anchoring capability. This study offers a photo-activated pyroptosis-based intervention strategy for cancer cell ablation.

Conflict of interest

The authors declare no conflict of interest.

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