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Lv YF, Zhang H, Cui Z, Ma CJ, Li YL, Lu H, Wu HY, Yang JL, Cao CY, Sun WZ, Huang XF. Gene delivery to breast cancer by incorporated EpCAM targeted DARPins into AAV2. BMC Cancer 2023; 23:1220. [PMID: 38082377 PMCID: PMC10712102 DOI: 10.1186/s12885-023-11705-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 12/02/2023] [Indexed: 12/18/2023] Open
Abstract
OBJECTIVE The aim of this study is to evaluate an AAV vector that can selectively target breast cancer cells and to investigate its specificity and anti-tumor effects on breast cancer cells both in vitro and in vivo, offering a new therapeutic approach for the treatment of EpCAM-positive breast cancer. METHODS In this study, a modified AAV2 viral vector was used, in which EpCAM-specific DARPin EC1 was fused to the VP2 protein of AAV2, creating a viral vector that can target breast cancer cells. The targeting ability and anti-tumor effects of this viral vector were evaluated through in vitro and in vivo experiments. RESULTS The experimental results showed that the AAV2MEC1 virus could specifically infect EpCAM-positive breast cancer cells and accurately deliver the suicide gene HSV-TK to tumor tissue in mice, significantly inhibiting tumor growth. Compared to the traditional AAV2 viral vector, the AAV2MEC1 virus exhibited reduced accumulation in liver tissue and had no impact on tumor growth. CONCLUSION This study demonstrates that AAV2MEC1 is a gene delivery vector capable of targeting breast cancer cells and achieving selective targeting in mice. The findings offer a potential gene delivery system and strategies for gene therapy targeting EpCAM-positive breast cancer and other tumor types.
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Affiliation(s)
- Ya-Feng Lv
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, College of Basic Medical Sciences, China Three Gorges University, No. 8 Da Xue Road, Yichang City, Hubei Province, China
| | - Hao Zhang
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, College of Basic Medical Sciences, China Three Gorges University, No. 8 Da Xue Road, Yichang City, Hubei Province, China
| | - Zhi Cui
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, College of Basic Medical Sciences, China Three Gorges University, No. 8 Da Xue Road, Yichang City, Hubei Province, China
| | - Cui-Jiao Ma
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, College of Basic Medical Sciences, China Three Gorges University, No. 8 Da Xue Road, Yichang City, Hubei Province, China
| | - Yu-Ling Li
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, College of Basic Medical Sciences, China Three Gorges University, No. 8 Da Xue Road, Yichang City, Hubei Province, China
| | - Hua Lu
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, College of Basic Medical Sciences, China Three Gorges University, No. 8 Da Xue Road, Yichang City, Hubei Province, China
| | - Hong-Yan Wu
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, College of Basic Medical Sciences, China Three Gorges University, No. 8 Da Xue Road, Yichang City, Hubei Province, China
| | - Jian-Lin Yang
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, College of Basic Medical Sciences, China Three Gorges University, No. 8 Da Xue Road, Yichang City, Hubei Province, China
| | - Chun-Yu Cao
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, College of Basic Medical Sciences, China Three Gorges University, No. 8 Da Xue Road, Yichang City, Hubei Province, China.
| | - Wen-Zheng Sun
- Department of Pathology, Qilu Hospital, Shandong University, Shandong, China.
| | - Xiao-Fei Huang
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, College of Basic Medical Sciences, China Three Gorges University, No. 8 Da Xue Road, Yichang City, Hubei Province, China.
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