Volume 18, Issue 20 2107001
Research Article

A Three-In-One Assembled Nanoparticle Containing Peptide–Radio-Sensitizer Conjugate and TLR7/8 Agonist Can Initiate the Cancer-Immunity Cycle to Trigger Antitumor Immune Response

Xueqin Zhu

Xueqin Zhu

School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 China

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Xiaoxi Wang

Xiaoxi Wang

School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 China

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Bingyu Li

Bingyu Li

School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 China

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Yun Zhang

Yun Zhang

School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 China

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Yalan Chen

Yalan Chen

School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 China

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Wenyan Zhang

Wenyan Zhang

School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 China

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Yan Wang

Yan Wang

School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 China

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Wenjie Zhai

Wenjie Zhai

School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 China

Henan Key Laboratory of Bioactive Macromolecules, Zhengzhou University, Zhengzhou, 450001 China

International Joint Laboratory for Protein and Peptide Drugs of Henan Province, Zhengzhou University, Zhengzhou, 450001 China

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Zimai Liu

Zimai Liu

School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 China

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Sijia Liu

Sijia Liu

School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 China

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Jiaxin Sun

Jiaxin Sun

School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 China

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Zhenzhen Chen

Corresponding Author

Zhenzhen Chen

School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 China

Henan Key Laboratory of Bioactive Macromolecules, Zhengzhou University, Zhengzhou, 450001 China

International Joint Laboratory for Protein and Peptide Drugs of Henan Province, Zhengzhou University, Zhengzhou, 450001 China

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

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Yanfeng Gao

Corresponding Author

Yanfeng Gao

School of Life Sciences, Zhengzhou University, Zhengzhou, 450001 China

School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen, 518107 China

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

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First published: 17 April 2022
Citations: 18

Abstract

Radiotherapy (RT) has been shown to cause immunogenic cell death (ICD) of cancer cells, which promote the release of tumor-associated antigens, and trigger the cancer-immunity cycle (CIC). However, ICD induced by RT usually does not occur in hypoxic tumor cells due to their resistance to radiation. Moreover, RT also induces programmed death ligand 1 (PD-L1) upregulation on tumor cells, which has an inhibitory effect on T lymphocytes. Therefore, therapy based on CIC must selectively target the restricted steps of antitumor immunity. Herein, the authors design a versatile three-in-one assembling nanoparticle that can simultaneously execute these obstacles. The amphiphilic peptide drug conjugate NIA-D1, containing the hydrophobic radio-sensitizer 2-(2-nitroimidazol-1-yl) acetic acid (NIA), a peptide substrate of matrix metalloproteinase-2, and a hydrophilic PD-L1 antagonist DPPA-1, is constructed and co-assembled with hydrophobic Toll-like receptor (TLR) 7/8 agonist R848 to form nanoparticle NIA-D1@R848. The NIA-D1@R848 nanoparticles combined with RT can trigger the apoptosis of tumor cells and initiate the CIC. In the presence of R848, it promotes the maturation of dendritic cells, which together with protein programmed cell death protein 1 (PD-1) and its ligand PD-L1  blockade to relieve T cell suppression, and amplify the antitumor immune cycle. In conclusion, a functionalized three-in-one nanoparticle NIA-D1@R848 is successfully constructed, which can induce strong systemic antitumor immune response.

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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