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Zhang Z, Yang N, Lu H, Chen Y, Xu L, Wang Z, Lu Q, Zhong K, Zhu Z, Wang G, Li H, Zheng M, Zhang W, Yang H, Peng X, Zhou L, Tong A. Improved antitumor effects elicited by an oncolytic HSV-1 expressing a novel B7H3nb/CD3 BsAb. Cancer Lett 2024; 588:216760. [PMID: 38428724 DOI: 10.1016/j.canlet.2024.216760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 02/06/2024] [Accepted: 02/22/2024] [Indexed: 03/03/2024]
Abstract
Oncolytic viruses have emerged as a promising modality for cancer treatment due to their unique abilities to directly destroy tumor cells and modulate the tumor microenvironment. Bispecific T-cell engagers (BsAbs) have been developed to activate and redirect cytotoxic T lymphocytes, enhancing the antitumor response. To take advantage of the specific infection capacity and carrying ability of exogenous genes, we generated a recombinant herpes simplex virus type 1 (HSV-1), HSV-1dko-B7H3nb/CD3 or HSV-1dko-B7H3nb/mCD3, carrying a B7H3nb/CD3 or B7H3nb/mCD3 BsAb that replicates and expresses BsAb in tumor cells in vitro and in vivo. The new generation of oncolytic viruses has been genetically modified using CRISPR/Cas9 technology and the cre-loxp system to increase the efficiency of HSV genome editing. Additionally, we used two fully immunocompetent models (GL261 and MC38) to assess the antitumor effect of HSV-1dko-B7H3nb/mCD3. Compared with the HSV-1dko control virus, HSV-1dko-B7H3nb/mCD3 induced enhanced anti-tumor immune responses and T-cell infiltration in both GL261 and MC38 models, resulting in improved treatment efficacy in the latter. Furthermore, flow cytometry analysis of the tumor microenvironment confirmed an increase in NK cells and effector CD8+ T cells, and a decrease in immunosuppressive cells, including FOXP3+ regulatory T cells (Tregs), myeloid-derived suppressor cells (MDSCs), and CD206+ macrophages (M2). Overall, our study identified a novel camel B7H3 nanobody and described the genetic modification of the HSV-1 genome using CRISPR/Cas9 technology and the cre-loxp system. Our findings indicate that expressing B7H3nb/CD3 BsAb could improve the antitumor effects of HSV-1 based oncolytic virus.
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Affiliation(s)
- Zongliang Zhang
- State Key Laboratory of Biotherapy and Cancer Center, Research Unit of Gene and Immunotherapy, Chinese Academy of Medical Sciences, Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu Sichuan Province, 610041, China
| | - Nian Yang
- State Key Laboratory of Biotherapy and Cancer Center, Research Unit of Gene and Immunotherapy, Chinese Academy of Medical Sciences, Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu Sichuan Province, 610041, China
| | - Huaqing Lu
- State Key Laboratory of Biotherapy and Cancer Center, Research Unit of Gene and Immunotherapy, Chinese Academy of Medical Sciences, Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu Sichuan Province, 610041, China
| | - Yongdong Chen
- State Key Laboratory of Biotherapy and Cancer Center, Research Unit of Gene and Immunotherapy, Chinese Academy of Medical Sciences, Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu Sichuan Province, 610041, China
| | - Long Xu
- State Key Laboratory of Biotherapy and Cancer Center, Research Unit of Gene and Immunotherapy, Chinese Academy of Medical Sciences, Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu Sichuan Province, 610041, China
| | - Zeng Wang
- State Key Laboratory of Biotherapy and Cancer Center, Research Unit of Gene and Immunotherapy, Chinese Academy of Medical Sciences, Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu Sichuan Province, 610041, China
| | - Qizhong Lu
- State Key Laboratory of Biotherapy and Cancer Center, Research Unit of Gene and Immunotherapy, Chinese Academy of Medical Sciences, Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu Sichuan Province, 610041, China
| | - Kunhong Zhong
- State Key Laboratory of Biotherapy and Cancer Center, Research Unit of Gene and Immunotherapy, Chinese Academy of Medical Sciences, Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu Sichuan Province, 610041, China
| | - Zhixiong Zhu
- State Key Laboratory of Biotherapy and Cancer Center, Research Unit of Gene and Immunotherapy, Chinese Academy of Medical Sciences, Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu Sichuan Province, 610041, China
| | - Guoqing Wang
- Department of Ophthalmology, West China Hospital, Sichuan University, West China Medical School, Chengdu, Sichuan, 610041, China
| | - Hexian Li
- State Key Laboratory of Biotherapy and Cancer Center, Research Unit of Gene and Immunotherapy, Chinese Academy of Medical Sciences, Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu Sichuan Province, 610041, China
| | - Meijun Zheng
- Department of Otolaryngology, Head and Neck Surgery, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Weiwei Zhang
- State Key Laboratory of Biotherapy and Cancer Center, Research Unit of Gene and Immunotherapy, Chinese Academy of Medical Sciences, Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu Sichuan Province, 610041, China
| | - Hui Yang
- Department of Otolaryngology, Head and Neck Surgery, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Xingchen Peng
- State Key Laboratory of Biotherapy and Cancer Center, Research Unit of Gene and Immunotherapy, Chinese Academy of Medical Sciences, Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu Sichuan Province, 610041, China.
| | - Liangxue Zhou
- Department of Neurosurgery, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, 610041, China; Department of Neurosurgery, Fifth People's Hospital of Ningxia Hui Autonomous Region, Shizuishan, Ningxia, 753000, China; Department of Neurosurgery, Mianyang Central Hospital, Mianyang, Sichuan, 621000, China.
| | - Aiping Tong
- State Key Laboratory of Biotherapy and Cancer Center, Research Unit of Gene and Immunotherapy, Chinese Academy of Medical Sciences, Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu Sichuan Province, 610041, China; Frontiers Medical Center, Tianfu Jincheng Laboratory, Chengdu, 610212, China.
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Wang J, Wu K, Ni L, Li C, Peng R, Li Y, Fan Z, Yin F, Deng F, Shen S, Wu X. Effects of US7 and UL56 on Cell-to-Cell Spread of Human Herpes Simplex Virus 1. Viruses 2023; 15:2256. [PMID: 38005932 PMCID: PMC10675736 DOI: 10.3390/v15112256] [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: 10/09/2023] [Revised: 11/07/2023] [Accepted: 11/09/2023] [Indexed: 11/26/2023] Open
Abstract
Human herpes simplex virus (HSV), a double-stranded DNA virus belonging to the Herpesviridae family and alpha herpesvirus subfamily, is one of the most epidemic pathogens in the population. Cell-to-cell spread is a special intercellular transmission mechanism of HSV that indicates the virulence of this virus. Through numerous studies on mutant HSV strains, many viral and host proteins involved in this process have been identified; however, the mechanisms remain poorly understood. Here, we evaluated the effect of the membrane protein genes US7 and UL56 on cell-to-cell spread in vitro between two HSV-1 (HB94 and HN19) strains using a plaque assay, syncytium formation assay, and the CRISPR/Cas9 technique. US7 knockout resulted in the inhibition of viral cell-to-cell spread; additionally, glycoprotein I (US7) of the HB94 strain was found to promote cell-to-cell spread compared to that of the HN19 strain. UL56 knockout did not affect plaque size and syncytium formation; however, the gene product of UL56 from the HN19 strain inhibited plaque formation and membrane infusion. This study presents preliminary evidence of the functions of US7 and UL56 in the cell-to-cell spread of HSV-1, which will provide important clues to reveal the mechanisms of cell-to-cell spread, and contributes to the clinical drugs development.
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Affiliation(s)
- Jun Wang
- Key Laboratory of Virology and Biosafety, Chinese Academy of Sciences, Wuhan 430071, China; (J.W.); (K.W.); (L.N.); (C.L.); (Z.F.); (F.D.)
| | - Ke Wu
- Key Laboratory of Virology and Biosafety, Chinese Academy of Sciences, Wuhan 430071, China; (J.W.); (K.W.); (L.N.); (C.L.); (Z.F.); (F.D.)
| | - Longquan Ni
- Key Laboratory of Virology and Biosafety, Chinese Academy of Sciences, Wuhan 430071, China; (J.W.); (K.W.); (L.N.); (C.L.); (Z.F.); (F.D.)
| | - Chenxuan Li
- Key Laboratory of Virology and Biosafety, Chinese Academy of Sciences, Wuhan 430071, China; (J.W.); (K.W.); (L.N.); (C.L.); (Z.F.); (F.D.)
- University of Chinese Academy of Sciences, Beijing 101499, China
| | - Ruoyan Peng
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou 571199, China; (R.P.); (F.Y.)
- The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou 571199, China
| | - Yi Li
- CAS Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy and Sciences, Guangzhou 510530, China;
| | - Zhaojun Fan
- Key Laboratory of Virology and Biosafety, Chinese Academy of Sciences, Wuhan 430071, China; (J.W.); (K.W.); (L.N.); (C.L.); (Z.F.); (F.D.)
| | - Feifei Yin
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou 571199, China; (R.P.); (F.Y.)
- The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou 571199, China
| | - Fei Deng
- Key Laboratory of Virology and Biosafety, Chinese Academy of Sciences, Wuhan 430071, China; (J.W.); (K.W.); (L.N.); (C.L.); (Z.F.); (F.D.)
| | - Shu Shen
- Key Laboratory of Virology and Biosafety, Chinese Academy of Sciences, Wuhan 430071, China; (J.W.); (K.W.); (L.N.); (C.L.); (Z.F.); (F.D.)
| | - Xiaoli Wu
- Key Laboratory of Virology and Biosafety, Chinese Academy of Sciences, Wuhan 430071, China; (J.W.); (K.W.); (L.N.); (C.L.); (Z.F.); (F.D.)
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