大鼠(RAT),学名Rattus norvegicus,在生物分类学上属脊椎动物门、哺乳动物纲、啮齿目、鼠科、家鼠属、褐家鼠种。实验室也常会看到大鼠的影子,大鼠在药物学、代谢性疾病研究、肿瘤研究遗传学等多个研究领域做出了很大的贡献。此次试验的目的是研磨大鼠血管,提取核酸。
实验材料和器具:
样品:大鼠血管
工具:净信多样品组织研磨仪(Tissuelyser-24)
耗材:离心管、研磨珠、液氮、剪刀、镊子等
实验步骤:
1、准备离心管,研磨珠若干;
2、首先将适配器置于装有液氮的容器内,液氮容量没过适配器即可,冷冻几分钟,取出时戴手套或使用镊子夹取避免液氮冻伤;
3、从冰箱内取大鼠血管组织剪成小块与研磨珠一同放入离心管中,将盖子盖紧;
4、将适配器放入研磨仪中固定,然后在将离心管放置适合器内。样品尽量对称放置,以保证研磨时的受力平衡,旋紧垂直定位螺旋,将安全锁扣紧。设置参数,程序结束后即可得到破碎粉末;
5、研磨完毕后请关闭电源,将安全锁归位;
6、完成后续核酸提取步骤。
注意事项:
1、每支离心管样品量一般不超过放心管体积的三分之二,样品量过多会影响研磨效果。
2、样品尽量对称放置,以保证研磨时的受力平衡。
3、适配器采用半导体材质需要提前放入液氮中浸泡几分钟预冷。
实验过程、结果图示:
实用仪器介绍:
上海净信®的Tiss组织研磨仪是一种特殊的、快速的、高效率的、多试管的一致系统。它能将任何来源(包括土壤、植物和动物的组织/器官、细菌、酵母、真菌、孢子、古生物标本等)的原始DNA、RNA和蛋白质进行提取和纯化。
采用了特殊的垂直上下一体震动模式,通过研磨珠(氧化锆、钢珠、玻璃珠、陶瓷珠)的高频往复振动、撞击、剪切。快速的实现目的。使研磨的样品具有更加充分、更均匀、样品重复性更好、样品之间没有交叉污染。
Previous:净信全自动样品快速研磨仪:研磨鱼骨提取微量元素
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