团头鲂骨组织细胞系的建立及其生物学特性
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华中农业大学水产学院,华中农业大学水产学院,华中农业大学水产学院,华中农业大学水产学院,华中农业大学水产学院,华中农业大学水产学院

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国家自然科学基金(31472271);武汉市青年科技晨光计划(2016070204010143);国家大宗淡水鱼类产业技术体系建设项目(CARS-45-08);国家级大学生创新创业训练计划(2015308200630)


Establishment and characterization of bone cell line for blunt snout bream (Megalobrama amblycephala)
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College of Fisheries, Huazhong Agricultural University

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    摘要:

    为研究鱼类骨组织细胞的特征,实验建立了团头鲂骨组织细胞的体外分离培养方法,并对其生物特性进行了鉴定。以3月龄团头鲂尾椎骨及肋骨为实验材料,利用组织块培养法和胰蛋白消化法分别进行骨组织细胞培养,确定最佳培养条件:采用组织块培养法,28 ℃培养,M-199培养基中加入体积分数为20%的胎牛血清、25 ng/mL表皮生长因子EGF和25 ng/mL碱性成纤维生长因子bFGF。细胞生物学特性鉴定结果显示:细胞碱性磷酸酶、钙化结节茜素红染色及矿化结节von Kossa氏法染色均呈阳性,表明所培养的细胞具有典型成骨细胞的生物学活性;鱼骨钙素ELISA试剂盒检测培养细胞中骨钙素含量为997.25 ng/L;荧光定量PCR结果显示特异性调节成骨细胞分化的转录因子runx2arunx2bosterix基因在团头鲂骨组织细胞系中均有表达,且runx2bosterix的表达量显著高于团头鲂肌肉细胞系。利用本方法可获得增殖活性良好,生长速率快,且细胞生物学特性稳定的团头鲂骨组织细胞系(MBCs),为日后鱼类骨组织体外实验研究奠定了基础。

    Abstract:

    In order to study the characteristics of fish bone cells, methods for isolating and culturing bone cells from caudal vertebrae and rib of blunt snout bream Megalobrama amblycephala were explored in the present study, and the biological characters of bone cells were identified. The bone cells were cultured with tissue culture and trypsin digestion respectively by using 3-month-old M. amblycephala caudal vertebrae and ribs from tail part. The optimal conditions were as follows:25 ng/mL epidermal growth factor (EGF) and 25 ng/mL basic fibroblast growth factor (bFGF) were added to the M-199 medium at 28℃ using tissue culture. The results of cell biology identification showed that the cultured cells had the biological activity of typical osteoblasts, with alkaline phosphatase staining, calcium nodules alizarin red staining and mineralized nodules von Kossa staining being positive. The osteocalcin content was 997.25 ng/L in the bone cells tested by the fish bone osteocalcin ELISA kit. The genes of runx2a, runx2b and osterix which regulated osteoblast differentiation, were expressed in bone cells, with the runx2b and osterix expression levels significantly higher than that in muscle cells. Results indicated that bone cells of fish have good proliferation and faster growth rate as well as stable cell biological characteristics, which is suitable for related studies in vitro.

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关柠楠,兰天,陈宇龙,刘莉芳,周芬,高泽霞.团头鲂骨组织细胞系的建立及其生物学特性[J].水产学报,2018,42(4):513~521

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  • 收稿日期:2017-03-21
  • 最后修改日期:2017-05-05
  • 录用日期:2017-07-17
  • 在线发布日期: 2018-03-28
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