人源性肝癌细胞小鼠原位移植瘤模型的建立及特点的比较研究
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(1. 中国农业大学动物医学院,北京 100193; 2. 北京昭衍新药研究中心股份有限公司, 北京 100176)

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R-33

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Establishment of mouse orthotopic transplantation tumor models of human hepatoma and comparison of their characteristics
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(1. College of Veterinary Medicine, China Agricultural University, Beijing 100193, China;2. JOINN Laboratories(China) CO. ,LTD, Beijing 100176)

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    摘要:

    目的 选择3 株人源性肝癌细胞,原位接种于4 种不同免疫功能缺陷的小鼠肝组织内,建立人源性肝癌细胞原位移植瘤模型并进行比较?方法 将人HepG2?HUH-7 和QGY-7703 细胞悬液,分别接种于不同免疫功能缺陷的小鼠(BALB/ c 裸鼠?NOD SCID 小鼠?NOG 小鼠和NPG 小鼠)肝组织内?最终统计模型小鼠死亡时间?死亡率?肝重量,应用B 超以及组织学检查等方法,分析比较不同免疫功能缺陷小鼠肝癌模型的特点?结果 B 超和大体解剖观察结果显示各实验组小鼠均可见肝组织内有肿瘤结节形成;肝接种HepG2 细胞悬液的各组动物于实验20 d 左右全部死亡,NOG 和NPG 小鼠生存时间显著低于BALB/ c 裸鼠和NOD SCID 小鼠( P < 0. 001);HUH-7 和QGY-7703 接种肝的各实验组动物分别于实验第92 天和104 天进行解剖,发现NOG 和NPG 模型小鼠肝体积显著增大并形成巨大肿瘤团块,而BALB/ c 裸鼠和NOD SCID 小鼠仅可见肝组织出现较小的肿瘤结节;HUH-7 及QGY-7703 接种肝的NOG 和NPG 小鼠肝重量显著高于BALB/ c 裸鼠和NOD SCID 小鼠( P <0. 05);组织学检查可见各组动物肝组织内均出现肿瘤细胞生长伴大面积坏死,部分动物肺组织发生肿瘤细胞转移?结论 与BALB/ c 裸鼠和NOD SCID 小鼠比较,肝癌细胞在NOG 和NPG 小鼠肝组织内生长更为迅速,最终表现为生存期短,肝体积大,重量增加?NOG 和NPG 小鼠可以在较短时间内完成人源性肝癌细胞的恶性增殖,缩短模型研究周期,因此NOG 和NPG 小鼠人源性肝细胞原位移植瘤是抗肝癌药物的研发的较为理想的模型?

    Abstract:

    Objective Three human hepatoma cell lines were injected into liver tissue of four mice with different immune function defects to establish orthotopic xenograft models of human hepatoma for comparison. Methods Human HepG2, HUH-7, and QGY-7703 cell suspensions were injected into the livers of mice with different immune function defects [BALB/ c nude, non-obese diabetic (NOD) SCID, NOG (NOD. Cg-PrkdcscidII2rgtm1Sug / JicCrl), and NPG mice]. Survival time, mortality, liver weight, B-mode ultrasound, and histology were used to analyze and compare the characteristics of liver cancer models in the various immunodeficient mice. Results B-ultrasonography and gross anatomical observations indicated that all experimental animals showed tumor nodule formation in liver tissue. Moreover, all animals injected with a HepG2 cell suspension into the liver died at about 20 days. The survival time of NOG and NPG mice was significantly shorter than that of BALB/ c and NOD SCID mice ( P <0. 001). Experimental groups with injected HUH-7 and QGY-7703 cell suspensions into the liver were autopsied at day 92 and 104, respectively. The liver volumes of NOG and NPG model mice were increased significantly and formed large tumor masses, whereas BALB/ c nude and NOD SCID mice showed only small tumor nodules in liver tissues. The weights of NOG and NPG mouse livers were significantly higher than those of BALB/ c nude and NOD SCID mouse livers ( P < 0. 05). Histological examination showed that all groups of animals exhibited tumor cell growth with large areas of necrosis and some animal lung tissues had tumor metastasis. Conclusions Compared with BALB/ c nude and NOD SCID mice, hepatoma cells grow more rapidly in the liver tissues of NOG and NPG mice, and the survival time is short, the liver volume is large, and the weight is increased.The human hepatoma cell lines can complete malignant proliferation in NOG and NPG mice in a short time for time-efficient model study. Therefore, human-derived hepatocyte xenografts in NOG and NPG mice are an ideal model for the development of anti-hepatoma drugs.

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尹君,李景丁莎,左从林,张惠铭,佘锐萍.人源性肝癌细胞小鼠原位移植瘤模型的建立及特点的比较研究[J].中国比较医学杂志,2018,28(12):68~74.

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  • 收稿日期:2018-06-05
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  • 在线发布日期: 2019-01-08
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