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常见的细胞消化方法有哪些?

时间:2023/11/2阅读:279
分享:


我们在细胞培养时大部会以贴壁的形式生长(除了取自血、脾或骨髓的细胞),使用的wan全培养基中的血清,含有许多带阳性电荷的促细胞附着因子(层黏连蛋白 Laminine、纤维链接蛋白 Fibronectin 等胞外基质),能帮助细胞附着于带阴性电荷的底物上,并形成键结、贴壁伸展。也就是所谓的细胞消化,常见的细胞消化方法有哪些?一起来学习一下吧!

机械消化法
  直接用液体吹打或用刮刀,施予外力让细胞与培养底物分离;适用于贴壁性弱的细胞传代,但相较于其它消化方法,这种外力无法量化控制,细胞分散效果差,且可能会造成大量细胞破损,使内容物释放到培养基,进而影响细胞传代状态。

离子螯合法
  细胞膜表面蛋白大多需要钙、镁离子来维持与胞外基质的稳定键结,当然也包含各种黏附蛋白(例:整合素、钙黏着蛋白、桥粒等),螯合剂会在不破坏细胞膜表面蛋白的状况下,抽离这些离子,使黏附蛋白失活而减少细胞-细胞间及细胞-底物间的连接作用,让细胞较容易在施予外力时,脱离培养底物并促进细胞分散。
  0.02% EDTA是细胞传代常用的离子螯合剂,在37℃作用效果佳(消化较敏感的细胞可在4℃作用),适用于消化一般贴壁性细胞或细胞表面标记实验细胞。

酶消化法
  用蛋白水解酶消化连接细胞及培养底物的蛋白质,适用于消化贴壁性稍强的细胞。

以上就是常见的三种关于细胞消化的方法,如果你想了解更多请咨询百奥创新客服~

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