Abstract
A kind of epitope surface imprinted particles was synthesized to selectively recognize cytochrome c (Cyt c) by a novel strategy assisted with γ-cyclodextrin (γ-CD) by host-guest interaction. C-terminal epitope nonapeptide of Cyt c was chosen as the template. γ-CD was immobilized on the surface of the silica as an encapsulated molecule to capture the template and improve the corresponding spatial orientation by the host-guest interaction for the peptide and target protein recognition. After γ-CD and epitope modified, the surface imprinted polymer assisted with the host-guest interaction was synthesized via monomers and cross-linkers by radical polymerization strategy. After the peptide removal, the epitope surface imprinted particles were obtained. The performance of Cyt c recognition in bovine serum sample by the imprinted polymers was calculated by HPLC. The modified imprinted polymers prepared achieved the best binding capability of 2.89 mg g−1 AE-9 with the IF = 4.07 and 37.58 mg g−1 Cyt c with the IF = 3.38, and it also realized an efficiency and selectivity protein recognition. Additionally, the imprinted particles assisting by γ-CD have good reusability with 89.89% of the original after five sorption-elution cycles and a better recognized ability (IF = 3.38) than those without γ-CD assisting (IF = 1.44). These results indicated that this epitope imprinted method assisted with the host-guest recognition interaction by γ-CD exhibited well specific recognition abilities towards the target protein Cyt c and potential application for Cyt c recognition in biological sample.
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The data that support the findings of this study is available in this publishing article of Chromatographia.
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Acknowledgements
This work was supported by National Natural Science Foundation of China (No. 21804099) and Open Project of Tianjin Key Laboratory of Biomedical Materials (No. 2022BMEKFKT003).
Funding
This work was funded by National Natural Science Foundation of China (Grant Number 21804099) and Open Project of Tianjin Key Laboratory of Biomedical Materials (Grant Number 2022BMEKFKT003). Qinran Li and Hongfeng Zhang declared that the funds were supported by National Natural Science Foundation of China (Grant Number 21804099). Wenquan Ji, Hongfeng Zhang, Jin Zhao, Qinran Li and Donglan Sun declared that the funds were supported by Open Project of Tianjin Key Laboratory of Biomedical Materials (Grant Number 2022BMEKFKT003). Yongjian Wang, Qiliang Deng and Tianjun Liu declared that there was no fund support in the research process. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
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Wenquan Ji and Yongjian Wang proceed the main experiment and wrote the main manuscript text. Hongfeng Zhang established chromatographic separation methods and provided support for the use of chromatographic instruments. Jin Zhao provided the support for functional modification of γ-cyclodextrin and peptide inclusion. Qinran Li revised the whole manuscript and finished the final draft. Qiliang Deng, Donglan Sun and Tianjun Liu put forward some useful suggestions for the revision and improvement of the manuscript. All of the authors reviewed the manuscript.
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Ji, W., Wang, Y., Zhang, H. et al. Preparation of C-Terminal Epitope Imprinted Particles for Recognition of Cytochrome c Assisted with γ-Cyclodextrin by Host-Guest Interaction. Chromatographia 86, 469–482 (2023). https://doi.org/10.1007/s10337-023-04257-0
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DOI: https://doi.org/10.1007/s10337-023-04257-0