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Cheng Y, Liu Y, Xu D, Zhang D, Yang Y, Miao Y, He S, Xu Q, Li E. An engineered TNFR1-selective human lymphotoxin-alpha mutant delivered by an oncolytic adenovirus for tumor immunotherapy. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167122. [PMID: 38492783 DOI: 10.1016/j.bbadis.2024.167122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 02/25/2024] [Accepted: 03/10/2024] [Indexed: 03/18/2024]
Abstract
Lymphotoxin α (LTα) is a soluble factor produced by activated lymphocytes which is cytotoxic to tumor cells. Although a promising candidate in cancer therapy, the application of recombinant LTα has been limited by its instability and toxicity by systemic administration. Secreted LTα interacts with several distinct receptors for its biological activities. Here, we report a TNFR1-selective human LTα mutant (LTα Q107E) with potent antitumor activity. Recombinant LTα Q107E with N-terminal 23 and 27 aa deletion (named LTα Q1 and Q2, respectively) showed selectivity to TNFR1 in both binding and NF-κB pathway activation assays. To test the therapeutic potential, we constructed an oncolytic adenovirus (oAd) harboring LTα Q107E Q2 mutant (named oAdQ2) and assessed the antitumor effect in mouse xenograft models. Intratumoral delivery of oAdQ2 inhibited tumor growth. In addition, oAdQ2 treatment enhanced T cell and IFNγ-positive CD8 T lymphocyte infiltration in a human PBMC reconstituted-SCID mouse xenograft model. This study provides evidence that reengineering of bioactive cytokines with tissue or cell specific properties may potentiate their therapeutic potential of cytokines with multiple receptors.
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Affiliation(s)
- Yan Cheng
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, China; Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, China
| | - Yu Liu
- Department of Oncology, Shanghai Tenth People's Hospital, Shanghai, China
| | - Dongge Xu
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, China; Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, China
| | - Dan Zhang
- Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, China
| | - Yang Yang
- Shanghai Baoyuan Pharmaceutical Co., Ltd, Shanghai, China
| | - Yuqing Miao
- The Affiliated Yancheng First People's Hospital, Medical School, Nanjing University, Yancheng, China
| | - Susu He
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, China; Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, China; The Affiliated Yancheng First People's Hospital, Medical School, Nanjing University, Yancheng, China
| | - Qing Xu
- Department of Oncology, Shanghai Tenth People's Hospital, Shanghai, China; Department of Medical Oncology, Shanghai Tenth People's Hospital, Tongji University Cancer Center, School of Medicine, Tongji University, Shanghai, China.
| | - Erguang Li
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, China; Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, China; Department of Oncology, Shanghai Tenth People's Hospital, Shanghai, China.
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Creation of lysine-deficient mutant lymphotoxin-α with receptor selectivity by using a phage display system. Biomaterials 2010; 31:1935-43. [DOI: 10.1016/j.biomaterials.2009.10.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2009] [Accepted: 10/07/2009] [Indexed: 12/20/2022]
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Obuchi M, Odagiri T, Lizuka H, Ohara Y. Expression of lymphotoxin gene inserted into Theiler's murine encephalomyelitis virus. Microbiol Immunol 1999; 43:83-6. [PMID: 10100752 DOI: 10.1111/j.1348-0421.1999.tb02377.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Theiler's murine encephalomyelitis virus (TMEV) belongs to the Picornaviridae genus. DA subgroup strains of this virus induce early, non-fatal polioencephalomyelitis followed by demyelination in the spinal cord, with virus persistence. We investigated the use of DA strain as a vector for the introduction of a foreign gene into the central nervous system. Human lymphotoxin (LT) gene was inserted in the L region, the most upstream part of the polyprotein coding region of DA genome. Expression of LT was demonstrated by an immunoblot and an enzyme-linked immunosorbent assay on BHK-21 cells that were infected with the recombinant virus. In addition, the expressed LT showed cytotoxicity against L-929 cells.
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Affiliation(s)
- M Obuchi
- Department of Microbiology, Kanazawa Medical University, Uchinada, Ishikawa, Japan
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