Volume 19, Issue 25 2301063
Research Article

Cation–π Interaction Trigger Supramolecular Hydrogelation of Peptide Amphiphiles

Shuang Chen

Shuang Chen

State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, School of Biomedical Sciences, Hunan University Changsha, Hunan, 410082 P. R. China

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Zenghui Li

Zenghui Li

State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, School of Biomedical Sciences, Hunan University Changsha, Hunan, 410082 P. R. China

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Chunhui Zhang

Chunhui Zhang

College of Biology, Hunan University Changsha, Hunan, 410082 P. R. China

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Xia Wu

Xia Wu

State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, School of Biomedical Sciences, Hunan University Changsha, Hunan, 410082 P. R. China

Shenzhen International Institute for Biomedical Research, Longhua District Shenzhen, Guangdong, 518116 P. R. China

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Wenjie Wang

Wenjie Wang

State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, School of Biomedical Sciences, Hunan University Changsha, Hunan, 410082 P. R. China

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Qingjun Huang

Qingjun Huang

State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, School of Biomedical Sciences, Hunan University Changsha, Hunan, 410082 P. R. China

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Weiyu Chen

Weiyu Chen

State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, School of Biomedical Sciences, Hunan University Changsha, Hunan, 410082 P. R. China

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Junfeng Shi

Corresponding Author

Junfeng Shi

State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, School of Biomedical Sciences, Hunan University Changsha, Hunan, 410082 P. R. China

E-mail: [email protected]; [email protected]

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Dan Yuan

Corresponding Author

Dan Yuan

State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, School of Biomedical Sciences, Hunan University Changsha, Hunan, 410082 P. R. China

E-mail: [email protected]; [email protected]

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First published: 18 March 2023
Citations: 18

Abstract

As an important noncovalent interaction, cation–π interaction plays an essential role in a broad area of biology and chemistry. Despite extensive studies in protein stability and molecular recognition, the utilization of cation–π interaction as a major driving force to construct supramolecular hydrogel remains uncharted. Here, a series of peptide amphiphiles are designed with cation–π interaction pairs that can self-assemble into supramolecular hydrogel under physiological condition. The influence of cation–π interaction is thoroughly investigated on peptide folding propensity, morphology, and rigidity of the resultant hydrogel. Computational and experimental results confirm that cation–π interaction could serve as a major driving force to trigger peptide folding, resultant β-hairpin peptide self-assembled into fibril-rich hydrogel. Furthermore, the designed peptides exhibit high efficacy on cytosolic protein delivery. As the first case of using cation–π interactions to trigger peptide self-assembly and hydrogelation, this work provides a novel strategy to generate supramolecular biomaterials.

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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