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Chen T, Mao S, Ma J, Tang X, Zhu R, Mao D, Zhu X, Pan Q. Proximity-Enhanced Functional Imaging Analysis of Engineered Tumors. Angew Chem Int Ed Engl 2024; 63:e202319117. [PMID: 38305848 DOI: 10.1002/anie.202319117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 02/01/2024] [Accepted: 02/01/2024] [Indexed: 02/03/2024]
Abstract
Functional imaging (FI) techniques have revolutionized tumor imaging by providing information on specific tumor functions, such as glycometabolism. However, tumor cells lack unique molecular characteristics at the molecular level and metabolic pathways, resulting in limited metabolic differences compared to normal cells and increased background signals from FI. To address this limitation, we developed a novel imaging technique termed proximity-enhanced functional imaging (PEFI) for accurate visualization of tumors. By using "two adjacent chemically labeled glycoproteins" as output signals, we significantly enhance the metabolic differences between tumor and normal cells by PEFI, thereby reducing the background signals for analysis and improving the accuracy of tumor functional imaging. Our results demonstrate that PEFI can accurately identify tumors at the cellular, tissue, and animal level, and has potential value in clinical identification and analysis of tumor cells and tissues, as well as in the guidance of clinical tumor resection surgery.
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Affiliation(s)
- Tianshu Chen
- Clinical Laboratory, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, P. R. China
- Shanghai Key Laboratory of Clinical Molecular Diagnostics for Pediatrics, Shanghai, 200127, P. R. China
| | - Siwei Mao
- Clinical Laboratory, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, P. R. China
- Shanghai Key Laboratory of Clinical Molecular Diagnostics for Pediatrics, Shanghai, 200127, P. R. China
| | - Ji Ma
- Clinical Laboratory, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, P. R. China
- Shanghai Key Laboratory of Clinical Molecular Diagnostics for Pediatrics, Shanghai, 200127, P. R. China
| | - Xiaochen Tang
- Clinical Laboratory, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, P. R. China
- Shanghai Key Laboratory of Clinical Molecular Diagnostics for Pediatrics, Shanghai, 200127, P. R. China
| | - Rui Zhu
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai, 200072, P. R. China
| | - Dongsheng Mao
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai, 200072, P. R. China
| | - Xiaoli Zhu
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai, 200072, P. R. China
| | - Qiuhui Pan
- Clinical Laboratory, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, P. R. China
- Shanghai Key Laboratory of Clinical Molecular Diagnostics for Pediatrics, Shanghai, 200127, P. R. China
- Sanya Women and Children's Hospital Managed by Shanghai Children's Medical Center, Sanya, 572000, P. R. China
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Fang E, Liu X, Liu X, Li M, Wang L, Li M, Zhang Z, Li Y, Yu Y. Investigation of immune response induction by Japanese encephalitis live-attenuated and chimeric vaccines in mice. MedComm (Beijing) 2022; 3:e117. [PMID: 35415706 PMCID: PMC8986025 DOI: 10.1002/mco2.117] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 01/15/2022] [Accepted: 01/17/2022] [Indexed: 12/27/2022] Open
Abstract
The Japanese encephalitis (JE) live-attenuated vaccine SA14-14-2 and the chimeric vaccine IMOJEV (JE-CV) are two kinds of vaccines available for use worldwide. JE-CV was previously known as ChimeriVax-JE, that consists of yellow fever vaccine 17D (YFV-17D) from which the structural genes (prM/E) have been replaced with those of SA14-14-2. This study aimed to investigate the neutralizing antibody, protection efficacy, and specific T-cell response elicited by both vaccines in mice. The neutralizing antibodies produced by JE-CV were slightly lower than those produced by SA14-14-2, but the protection conferred by JE-CV was considerably lower in the low vaccine dose immunization group. Furthermore, the JE-CV did not induce a specific T-cell response against JEV NS3, while it did induce a potent antigen-specific T-cell response against the viral backbone vaccine YFV. In conclusion, this study is the first detailed investigation of the cellular immune response to the two vaccines. Enzyme-linked immunospot (ELISPOT) and flow staining suggest a more potent specific T-cell response against the JEV antigen was elicited in mice immunized with SA14-14-2 but not JE-CV. Using heterologous flaviviruses as a live-attenuated vaccine backbone may unlikely generate an optimal T-cell response against the vaccine strain virus and might affect the protective efficacy.
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Affiliation(s)
- Enyue Fang
- National Institutes for Food and Drug Control Beijing 102629 China
- Wuhan Institute of Biological Products, Co., LtD. Wuhan 430207 China
| | - Xinyu Liu
- National Institutes for Food and Drug Control Beijing 102629 China
| | - Xiaohui Liu
- National Institutes for Food and Drug Control Beijing 102629 China
| | - Ming Li
- National Institutes for Food and Drug Control Beijing 102629 China
| | - Ling Wang
- National Institutes for Food and Drug Control Beijing 102629 China
| | - Miao Li
- National Institutes for Food and Drug Control Beijing 102629 China
| | - Zelun Zhang
- National Institutes for Food and Drug Control Beijing 102629 China
| | - Yuhua Li
- National Institutes for Food and Drug Control Beijing 102629 China
| | - Yongxin Yu
- National Institutes for Food and Drug Control Beijing 102629 China
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