Summary

Shrinky丁克挂滴:一个简单的方法,形式和文化胚体

Published: March 05, 2008
doi:

Summary

我们展示一个简单而快速的方法加载到预先定义的数字,微型井细胞胚体的发展和维护。

Abstract

胚体(EB)的胚胎干细胞的聚集。创建这些聚集的最常用的方法是悬滴法,孔板移液到任意数量的细胞费力的方法。被迫彼此接近的干细胞之间的相互作用,促进了EBS的一代。因为在每个井的媒体每天要手动交换,这种做法是手动密集。

此外,因为环境参数,包括细胞,细胞可溶性因子的相互作用,pH值,和氧气供应的EB大小的功能,从传统的挂滴获得的细胞群可以相差很大,即使在相同条件下培养。的确,最近的研究表明,初步形成总额的细胞数量有重大影响干细胞分化。我们已经开发出一种简单,快速,可伸缩的文化的方法加载到预先定义的数字,微型井细胞胚体的发展和维护。最后,这些细胞是方便作进一步的分析和实验。这种方法适合任何实验室,无需专用设备。我们通过这种方法使用红色荧光的小鼠细胞株(129S6B6 F1),胚体。

Protocol

1。制作Shrinky,丁克模具 shrinky,丁克表使用一个很好的定义打印机打印所需的图案。 烘烤shrinky丁克表在163℃,约10分钟,或直至完全萎缩,并取得了一个常规的形状。 shrinky,丁克模具冷却下来后,把它浸入异丙醇洗澡,直到完整的表面几乎覆盖。 小心,喷在模具丙酮和摇晃容器几次。添加更多的异丙醇洗出丙酮过剩,重复此步骤几次,直到shrinky模看上去干净。 </li…

Discussion

我们已经开发出一种简单,快速,可伸缩的培养方法加载到微井(Shrinky – Dinks成型)预先定义的细胞数目和他们保持胚体的发​​展。最后,这些细胞是方便作进一步的分析和实验。这种方法适合任何实验室,不需要专用的设备,因为我们排除光刻需要。我们可以改变的微孔的大小以及细胞/井的浓度改变胚体的数量和大小。

Acknowledgements

我们要感谢支持这项工作摆围。安德拉什纳吉博士在西奈山医院,多伦多,安大略省的细胞系的慷慨捐赠。

Materials

Material Name Type Company Catalogue Number Comment
Shrink-Dink Film Material K&B Innovations D300-10A
PDMS Material Dow Corning Sylgard 184
Acetone Reagent Fisher Scientific A16P-4
Ethanol Reagent Fisher Scientific A405P-4
PBS Reagent Sigma P4417
BMP-4 Reagent R and D systems 314-BP-010
Knock-Out DMEM (KO DMEM) Reagent Invitrogen 10829
KnockOut Sirum Replacement (KSR) Reagent Invitrogen 10828
Penn-Strep Reagent Invitrogen 15070-063
L-glutamine Reagent Invitrogen 25030-081
Non-essential Amino Acids (NEAA) Reagent Invitrogen 11140
D-mercaptoethanol (BME) Reagent Calbiochem 444203
Leukemia Inhibitory Factor (LIF) {ESGRO 106 units} Reagent Chemicon ESG1106
Printer Tool HP Laser Jet 2420d
Oven Tool Yamato Scientific DP-22
For the mESC media(McCloskey lab protocol): (for total media prepared: 50ml; 100ml) KO DMEM: 40.8ml; 81.6ml 15% KSR: 7.5ml; 15ml 1x Penn-Strep: .5ml; 1ml 2mM L-glutamine: .5ml; 1ml NEAA : .5ml; 1ml LIF: 100ul; 200ul BMP-4 (10ng/ml): 50ul; 100ul Diluted BME: 50ul; 100ul (Add 35ul of sterile filtered BME to 5ml of PBS and syringe filter sterilize. Discard after 2 weeks. Final concentration in the solution is .1mM)

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Cite This Article
Chen, C., Pegan, J., Luna, J., Xia, B., McCloskey, K., Chin, W., Khine, M. Shrinky-Dink Hanging Drops: A Simple Way to Form and Culture Embryoid Bodies. J. Vis. Exp. (13), e692, doi:10.3791/692 (2008).

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