Volume 134, Issue 26 e202202855
Forschungsartikel

In Situ Prodrug Activation by an Affibody-Ruthenium Catalyst Hybrid for HER2-Targeted Chemotherapy

Zhennan Zhao

Zhennan Zhao

MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

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Xuan Tao

Xuan Tao

MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

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Yanxuan Xie

Yanxuan Xie

MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

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Qi Lai

Qi Lai

MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

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Wenkai Lin

Wenkai Lin

MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

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Kai Lu

Kai Lu

MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

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Jinhui Wang

Jinhui Wang

MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

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Prof. Dr. Wei Xia

Corresponding Author

Prof. Dr. Wei Xia

MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

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Prof. Dr. Zong-Wan Mao

Corresponding Author

Prof. Dr. Zong-Wan Mao

MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

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First published: 13 April 2022
Citations: 3

Abstract

Transition-metal catalysts exhibit great potential as therapeutic agents to inhibit tumor growth. However, the precise delivery and in situ catalysis are challenging in catalytic medicine. Herein, we report an anti-HER2 affibody-ruthenium catalyst hybrid, named Ru-HER2 for selective and effective killing of cancer cells. Ru-HER2 binds to the HER2 receptor on a tumor cell and in situ catalyzes the activation of gemcitabine prodrug, resulting in enhanced selectivity in suppression of tumor growth and reduction of side effects. Immunoblotting reveals that Ru-HER2 in combination with gemcitabine prodrug can not only induce DNA damage, but also effectively block the HER2 signaling pathway in cancer cells. Therefore, the HER2-targeted chemotherapy exhibits substantially high anticancer activity toward HER2-positive cancer cells in vitro and in vivo. In a word, we report the first affibody-ruthenium catalyst hybrid and reveal its potential for effective HER2-targeted cancer chemotherapy.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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