Construction of a new patient-derived xenograft model of human liver cancer in mice with normal immunity

Huixin TANG; Shanshan LI; Feng HONG; Yanzhen BI; Quanyi WANG; Xiaobei ZHANG; Shumin CHENG; Zhongping DUAN; Zhenfeng SHU; Yu CHEN

doi:10.3969/j.issn.1001-5256.2021.11.019

Volume 37 Issue 11

Nov. 2021

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Article Navigation > Journal of Clinical Hepatology > 2021 > 37(11): 2584-2588

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Construction of a new patient-derived xenograft model of human liver cancer in mice with normal immunity

DOI: 10.3969/j.issn.1001-5256.2021.11.019

1.
The Fourth Liver Disease Center, Beijing YouAn Hospital, Capital Medical University, Beijing 100069, China
2.
Shanghai Meifeng Biotechnology Co., Ltd., Shanghai 201203, China
3.
Department of Infectious Diseases, Qingdao Municipal Hospital, Qingdao, Shandong 266011, China
4.
Institute of Liver Diseases, Affiliated Hospital of Jining Medical University, Jining, Shandong 272000, China
5.
Clinical College of Jining Medical University, Jining, Shandong 272000, China
6.
Beijing Municipal Key Laboratory of Liver Failure and Artificial Liver Treatment Research, Beijing 100069, China

Research funding:

National Natural Science Foundation of China (81170395);

National Natural Science Foundation of China (81570556);

Chinese foundation for hepatitis prevention and control—TianQing liver disease research fund subject (TQGB20210013);

National Key R&D Program of China (2017YFA0103000);

National Science and Technology Key Project on "Major Infectious Diseases such as HIV/AIDS, Viral Hepatitis Preventon and Treatment" (2017ZX10203201-005);

Beijing Municipal Administration of Hospitals Clinical Medicine Development of Special Funding Support (ZYLX201806)

Received Date: 2021-04-13
Accepted Date: 2021-05-24
Published Date: 2021-11-20

Abstract

Abstract

Objective To establish a new patient-derived xenograft (PDX) model of human liver cancer by inoculating the complex of human primary liver cancer cells and a novel microcarrier (microcarrier 6) into mice with normal immune function. Methods Primary liver cancer cells were isolated and extracted from the fresh human liver cancer tissue of five patients and were then co-cultured with microcarrier 6 to construct a three-dimensional tumor cell culture model in vitro. According to the type of graft, 75 male C57BL/6 mice were divided into cell control group, microcarrier control group, and experimental group (each sample corresponded to three groups, with 15 groups in total and 5 mice in each group). The liver cancer cell-microcarrier complex was implanted into the mice by subcutaneous inoculation, and tumor formation time, tumor formation rate, and histopathological manifestations were observed. The Fisher's exact test was used for comparison of categorical data between two groups. Results As for the liver cancer cells from the five patients, tumor formation was observed in the mice corresponding to three patients. In these three experiments, tumor formation was not observed in the control groups and was only observed in the experimental groups, and 12 of the 15 mice in the experimental groups had successful tumor formation, with a tumor formation rate as high as 80%, which was significantly different from that in the cell control groups and the microcarrier control groups (all P < 0.05). The tumor formation time was 5-7 days; the xenograft tumor grew rapidly, and HE staining showed nested or flaky cells with obvious heteromorphism, with the presence of pathological mitosis; immunohistochemical staining showed positive CK8/18, Hep, and Gpc-3, which was in accordance with the characteristics of human liver cancer cells. Conclusion This experiment successfully establishes a new PDX model of human liver cancer based on the complex of microcarrier 6 and human primary liver cancer cells in mice with normal immunity. This model can be used to better elucidate the mechanism of the development and progression of liver cancer in the body with normal immunity, and besides, it also provides a new animal model with higher value for the precise treatment of liver cancer.

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Construction of a new patient-derived xenograft model of human liver cancer in mice with normal immunity

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Construction of a new patient-derived xenograft model of human liver cancer in mice with normal immunity

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