首页> 外文会议>Bioinformatics and Biomedical Engineering , 2009. ICBBE 2009 >Aquaporin-1 Deletion in Mice Inhibits Hepa1-6 Hepatocellular Carcinoma Growth
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Aquaporin-1 Deletion in Mice Inhibits Hepa1-6 Hepatocellular Carcinoma Growth

机译:小鼠中水通道蛋白1缺失抑制Hepa1-6肝细胞癌的生长

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Aquaporin (AQP) has been reported to express in microvessels of many different type of tumor, indicating the possible involvement of AQP in tumor angiogenesis. Tumor angiogenesis is a mandatory step of tumor growth involving endothelial cell proliferation and migration from blood vessels in peritumoral tissues and formation of tubules. A murine Hepal-6 hepatocellular carcinoma-bearing model in AQP1 knockout mice was used to evaluate the role of AQP1 in Hepal-6 hepatocellular carcinoma angiogenesis and tumor growth. The results demonstrated remarkably retarded growth of subcutaneously inoculated Hepal-6 cells in AQPl-knockout (AQP1-l-) mice compared to that in wild-type (AQP1+/+) mice. Morphology of Hepal-6 hepatocellular carcinoma sections revealed tumor cells formed islands with microvessels in the center. Immunohistochemistry of tumor blood vessels demonstrated high-density and thin microvessels located in the center of tumor islands in AQP1+/+ mice, whereas sparse and enlarged vessels were evident in tumor islands in AQP1-l- mice coincident with larger necrotic area in outer layer of the islands. Blood vessel AQP1 immune staining of Hepal-6 hepatocellular carcinoma sections indicated that strong AQP1 protein labelling in vascular endothelium cells of hepatocellular carcinoma in AQP1+/+ mice and negative labelling of AQP1 in the counterpart structures in AQP1-l- mice. These results provided direct evidence that AQP1 deletion results in defective Hepal-6 hepatocellular carcinoma angiogenesis and retarded tumor growth that may be involved in insufficient blood supply and abnormal transendothelial fluid transport.
机译:据报道水通道蛋白(AQP)在许多不同类型的肿瘤的微血管中表达,表明AQP可能参与肿瘤血管生成。肿瘤血管生成是肿瘤生长的必不可少的步骤,涉及内皮细胞的增殖以及肿瘤周围组织中血管的迁移和小管的形成。 AQP1基因敲除小鼠的小鼠Hepal-6肝细胞癌模型用于评估AQP1在Hepal-6肝细胞癌血管生成和肿瘤生长中的作用。结果表明,与野生型(AQP1 + / + )相比,AQP1基因敲除(AQP1 -l-)小鼠皮下接种Hepal-6细胞的生长明显受阻。 ) 老鼠。 Hepal-6肝细胞癌切片的形态显示,肿瘤细胞形成了岛状结构,中间是微血管。肿瘤血管的免疫组织化学显示,AQP1 + / + 小鼠的肿瘤岛中心有高密度薄微血管,而AQP1 -1 -小鼠与岛外层较大的坏死区重合。 Hepal-6肝细胞癌切片的血管AQP1免疫染色表明,AQP1 + / + 小鼠肝癌血管内皮细胞中AQP1蛋白标记强烈,而AQP1 < sup> -l-小鼠。这些结果提供了直接的证据,表明AQP1缺失会导致Hepal-6肝细胞癌的血管生成不良和肿瘤生长受阻,这可能与血液供应不足和异常的内皮细胞运输有关。

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