Summary

成年鼠神经干细胞的分离和扩大使用神经干含量

Published: November 20, 2010
doi:

Summary

这个视频协议演示,从成年小鼠脑室周围地区产生和扩大神经干细胞的神经球的含量测定方法,并提供技术见解,以确保可以实现重复性的神经球文化。

Abstract

分离和扩展的假定从成年鼠大脑中的神经干细胞(NS​​Cs的)是在1992年首次描述了采用化学定义的无血清培养系统,被称为神经干法(NSA)的雷诺和Weiss。在这个实验中,多数分化的细胞类型文化的几天内死亡,但人口少的生长因子的反应前体细胞进行增殖活跃在表皮生长因子(EGF)和/碱性成纤维细胞生长因子(bFGF)的存在。这些细胞的未分化细胞,称为神经球,这反过来又可以传代培养的神经干细胞池扩大形成的殖民地。此外,细胞可以诱导分化,产生中枢神经系统,即神经元,星形胶质细胞和少突胶质细胞的三个主要类型的细胞。这个实验提供了一个宝贵的工具,提供一个一致的,可再生能源的未分化的中枢神经系统前体, 可用于在体外研究中,也为治疗目的。

本视频演示了NSA的产生和扩大,从成年小鼠脑室周围区域的神经干细胞的方法,并提供技术见解,以确保可以实现重复性的神经球文化。该过程包括收获从成年小鼠,脑室周围地区的微观解剖,组织编制和文化在NSA大脑。收获的组织是第一个使用在NSC培养基胰蛋白酶- EDTA和机械分离,实现了单细胞悬液,最后镀在NSA化学消化。经过7-10天文化,产生的初级神经球传代培养的准备,以达到未来的实验所需的细胞量。

Protocol

<p class="jove_title">第1部分:基本设置,然后再进行剥离:</p><ol><li完成国科会培养基的准备适当的音量NeuroCult NSC基础培养基和NeuroCult NSC增殖辅料,分别在9:1的比例混合。文献中公布的NSC生长的培养基成分的基础上,国科会的介质,也可以在实验室<sup> 1</sup>。如果您的实验室不具备了丰富的经验与介质,我们强烈建议使用市售的中等质量控制神经干细胞生长之前被卖掉(这是NeuroCult,干细胞Technolgies公司?…

Discussion

神经球的检测 2不仅获得了隔离和中枢神经系统 4-5的神经干细胞研究,但也是公认的从众多的组织干细胞 ,如乳房 6和心脏7,其他类型的隔离研究界的广泛关注和脑,乳腺癌和结肠癌肿瘤干细胞8-9表明,这种文化系统可应用于体细胞和肿瘤的整个身体的前体细胞群的鉴定。这种方法的一些优点,包括它的简单性,重复性和无限期数量从一小块组织,甚至?…

Disclosures

The authors have nothing to disclose.

Acknowledgements

这项工作是从Overstreet基金会的资金支持。

Materials

Material Name Type Company Catalogue Number Comment
NeuroCult NSC Basal Medium Medium Stem Cell Technologies 05700  
NeuroCult NSC Proliferation Supplements Medium supplement Stem Cell Technologies 05701  
%0.05 trypsin-EDTA Reagent Gibco 25300-062  
Soybean trypsin inhibitor Reagent Sigma T6522  
Cell strainer Sieve BD Falcon 352340  
T25 flask Culture ware Nalge Nunc international 136196  
T80 flask Culture ware Nalge Nunc international 178905  
EGF Growth factor R&D 2028-EG  
Pen/Strep Reagent Gibco 15140-122  
*MEM Reagent Gibco 41500-018 HEM component
*HEPES Reagent Sigma H4034 HEM component
*Distilled water Reagent Gibco 15230-147  
15 ml tubes Culture ware BD Falcon 352096  
50 ml tubes Culture ware BD Falcon 352070  
Fine curved forceps Surgical tools Fine Science Tools 11251‐35  
Small fine forceps Surgical tools Fine Science Tools 11272‐30  
Small forceps Surgical tools Fine Science Tools 11050‐10  
b-FGF Growth factor R&D 3139-FB  
Heparin Growth factor Sigma H4784 Reconstituted in PBS

*To make HEM, mix 1×10L packet of MEM and160ml of 1M HEPES and bring the volume to 8.75 L using distilled water. Set the final PH to 7.4 and store it at 4°C.

References

  1. Louis, S. A., Reynolds, B. A. Neurosphere and Neural Colony-Forming Cell Assays. Protocols for Neural Cell Culture. 10, 1-28 (2010).
  2. Reynolds, B. A., Weiss, S. Generation of neurons and astrocytes from isolated cells of the adult mammalian central nervous system. Science. 255, 1707-1710 (1992).
  3. Sen, A., Kallos, M. S., Behie, L. A. New tissue dissociation protocol for scaled-up production of neural stem cells in suspension bioreactors. Tissue Eng. 10, 904-913 (2004).
  4. Morshead, C. M. Neural stem cells in the adult mammalian forebrain: a relatively quiescent subpopulation of subependymal cells. Neuron. 13, 1071-1082 (1994).
  5. Golmohammadi, M. G. Comparative analysis of the frequency and distribution of stem and progenitor cells in the adult mouse brain. Stem Cells. 26, 979-987 (2008).
  6. Dontu, G. In vitro propagation and transcriptional profiling of human mammary stem/progenitor cells. Genes Dev. 17, 1253-1270 (2003).
  7. Messina, E. Isolation and expansion of adult cardiac stem cells from human and murine heart. Circ Res. 95, 911-921 (2004).
  8. Ignatova, T. N. Human cortical glial tumors contain neural stem-like cells expressing astroglial and neuronal markers in vitro. Glia. 39, 193-206 (2002).
  9. Galli, R. Isolation and characterization of tumorigenic, stem-like neural precursors from human glioblastoma. Cancer Res. 64, 7011-7021 (2004).
  10. Reynolds, B. A., Rietze, R. L. Neural stem cells and neurospheres–re-evaluating the relationship. Nat Methods. 2, 333-336 (2005).
  11. Louis, S. A. Enumeration of Neural Stem and Progenitor Cells in the Neural Colony Forming Cell Assay. Stem Cells. , (2008).
check_url/2393?article_type=t

Play Video

Cite This Article
Azari, H., Rahman, M., Sharififar, S., Reynolds, B. A. Isolation and Expansion of the Adult Mouse Neural Stem Cells Using the Neurosphere Assay. J. Vis. Exp. (45), e2393, doi:10.3791/2393 (2010).

View Video