癌变·畸变·突变 ›› 2019, Vol. 31 ›› Issue (4): 323-326.doi: 10.3969/j.issn.1004-616x.2019.04.011

• 检测研究 • 上一篇    下一篇

麻痹性贝类毒素体外生物毒性检测方法的建立

于志强, 孙运, 陈小青, 刘汉伟, 马中春   

  1. 宁波中盛产品检测有限公司/宁波海关技术中心, 浙江 宁波 315000
  • 收稿日期:2018-11-07 修回日期:2019-05-31 出版日期:2019-07-30 发布日期:2019-08-23
  • 通讯作者: 马中春,E-mail:mazc@nbciq.gov.cn E-mail:mazc@nbciq.gov.cn
  • 作者简介:于志强,E-mail:yzqtd@163.com。
  • 基金资助:
    浙江省实验动物科技计划项目(2018C37100);宁波中盛产品检测有限公司技术开发项目(2019ZS05)

Establishment of an in vitro biotoxicity detection method of paralytic shellfish poisoning

YU Zhiqiang, SUN Yun, CHEN Xiaoqing, LIU Hanwei, MA Zhongchun   

  1. Ningbo Zhongsheng Product Testing Co., Ltd. /Ningbo Customs Technical Center, Ningbo 315000, Zhejiang, China
  • Received:2018-11-07 Revised:2019-05-31 Online:2019-07-30 Published:2019-08-23

摘要: 目的:建立麻痹性贝类毒素体外生物毒性检测方法。方法:小鼠神经干细胞(NSC)培养于96孔培养板中,至对数生长期,每孔加入170 μL培养液和10 μL石房蛤毒素(STX)标准品(分别为0.2、0.4、0.6、0.8、1.0、1.2、1.4 ng),再加入10 mmol/L的乌本苷10 μL及1 mmol/L的藜芦碱10 μL。同时设置乌本苷及藜芦碱对照孔,以及空白对照孔。CCK-8溶液孵育后用酶标仪测定各孔D(450)值,根据石房蛤毒素标准液含量与D(450)值之间的剂量反应关系,建立标准曲线。结果:培养的正常NSC第1天为单细胞悬液,第2~3天聚集成为小神经球,第4天为大神经球;加入乌本苷及藜芦碱后较多细胞出现肿胀破裂,加入STX后可见肿胀或破裂死亡的细胞,但细胞形态多为正常。并于0.2~1.0 ng范围内建立了麻痹性贝类毒素体外生物毒性检测方法并建立了标准曲线,其回归方程为y=1.252+0.495xr=0.998 0,P < 0.01)。结论:成功建立了麻痹性贝类毒素体外生物毒性检测方法,该研究为神经性贝类毒素的体外检测相关研究奠定了基础。

关键词: 麻痹性贝类毒素, 小鼠神经干细胞, 体外检测方法, 乌本苷, 藜芦碱

Abstract: OBJECTIVE:To establish a method for the biotoxicity detection of paralytic shellfish toxins. METHODS:Cultured mouse neural stem cells (NSC) were exposed to ubunin,resveratrol and different concentrations of standard solution of clam toxins. The in vitro detection method was established based on evaluation of the dose-response relationship between the content of standard liquid and D(450) value of the clams. RESULTS:In culture,the normal NSC started as single cell suspensions which formed small neurospheres in 2-3 days and large neurospheres in the fourth day. After adding ouabain and cucurbitine,the cells showed swelling and rupture. After adding STX,the cells became swollen or ruptured but the cell morphology was mostly normal. Consequently,the in vitro biotoxicity detection of paralytic shellfish toxins was established within the range of 0.2-1.0 ng and a standard curve was established. The regression equation was:y=1.252+0.495x (r=0.998 0,P < 0.01). CONCLUSION:An in vitro method for the biotoxicity detection of paralytic shellfish toxin was successfully established. The method can be further developed for in vitro detection of neurotoxins.

Key words: paralytic shellfish poisoning, mouse neural stem cells, in vitro detection method, ubenoside, veratrine

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