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Etoposide, a DNA damage-inducing agent, is widely used for malignant tumors. However, insufficient solubility, poor bioavailability and adverse events limited the treatment outcomes and prognosis. To address this, we here developed a novel biosynthetic and unfolded protein nanocarrier to load and deliver Etoposide. Compared with the pristine agent, the loading efficiency of the nanoformulated drug increased four times and the half-life time increased to 17.6 h with controlled release of the Etoposide for 6 days. The half-maximal inhibitory concentration at 48 h was lower than that at 24 h, suggesting a long-acting anti-tumor property. Moreover, the anti-tumor performance in rat models was significantly enhanced by improving solubility and cellular internalization. Additionally, immunogenicity and adverse toxicologic effects such as kidney and liver toxicity were significantly weakened. Therefore, the assembly strategy enables etoposide with higher efficacy, bioavailability, and safety, and has great potential in the comprehensive treatment of malignant tumors.


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Protein-based nanocarriers for efficient Etoposide delivery and cancer therapy

Show Author's information Bo Wang1,§Xiaoxiong Xu1,§Bo Li2Zheng Wei3,4Shuang Lu3Jingjing Li3Kai Liu2Hongjie Zhang2,3Fan Wang3( )Yang Yang1,5( )
Department of Thoracic Surgery, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai 200433, China
Engineering Research Center of Advanced Rare Earth Materials, (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
University of Science and Technology of China, Hefei 230026, China
School of Materials Science and Engineering, Tongji University, Shanghai 201804, China

§ Bo Wang and Xiaoxiong Xu contributed equally to this work.

Abstract

Etoposide, a DNA damage-inducing agent, is widely used for malignant tumors. However, insufficient solubility, poor bioavailability and adverse events limited the treatment outcomes and prognosis. To address this, we here developed a novel biosynthetic and unfolded protein nanocarrier to load and deliver Etoposide. Compared with the pristine agent, the loading efficiency of the nanoformulated drug increased four times and the half-life time increased to 17.6 h with controlled release of the Etoposide for 6 days. The half-maximal inhibitory concentration at 48 h was lower than that at 24 h, suggesting a long-acting anti-tumor property. Moreover, the anti-tumor performance in rat models was significantly enhanced by improving solubility and cellular internalization. Additionally, immunogenicity and adverse toxicologic effects such as kidney and liver toxicity were significantly weakened. Therefore, the assembly strategy enables etoposide with higher efficacy, bioavailability, and safety, and has great potential in the comprehensive treatment of malignant tumors.

Keywords: nanocarrier, solubility, malignant tumors, Etoposide, cellular internalization

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Publication history
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Acknowledgements

Publication history

Received: 03 April 2023
Revised: 11 May 2023
Accepted: 12 May 2023
Published: 09 June 2023
Issue date: August 2023

Copyright

© Tsinghua University Press 2023

Acknowledgements

Acknowledgements

This work was supported by the National Key R&D Program of China (Nos. 2020YFA0712102, 2018YFA0902600, 2021YFF0701800, 2020YFA0211100), the National Natural Science Foundation of China (Nos. 52222214, 22020102003, 22125701, 21907088, 51922077, 51872205), the Youth Innovation Promotion Association of CAS (No. 2020228), Natural Science Foundation of Jilin Province (No. 20210101366JC), the Foundation of National Facility for Translational Medicine (Shanghai) (No. TMSK-2020-012). All animal experiments were conducted in compliance with the Animal Management Rules of the Ministry of Health of the People’s Republic of China and with the approval of the Institutional Animal Care and Use Committee of the Animal Experiment Center of Peking University (No. LA2019313).

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