Summary

成人北极黄鼠海马神经干细胞的生长和分化

Published: January 07, 2011
doi:

Summary

准备从成人非冬眠周岁北极地松鼠(AGS)海马神经干细胞。这些神经干细胞可以通过许多段落扩大,分化和保持了近50:50的神经元的神经胶质文化。

Abstract

北极地松鼠(Urocitellus parryii,AGS)是独特的能力与核心体温接近或低于冻结1休眠。这些动物也抵制在体内 2,3和氧糖剥夺在体外 4,5脑缺血损伤。这些独特的品质提供了动力隔离AGS的神经元的研究神经元固有的特点,可占为AGS神经元的能力,以抵御缺血引起的损伤和细胞死亡和极冷温度。识别蛋白或靶基因,使这些细胞的独特属性,能够在发现有效的治疗缺血性标志和耐冷性研究的援助。成人AGS海马包含神经干细胞继续增殖,从而在培养这些干细胞易于扩展。我们在这里描述的方法,研究人员可以利用这些干细胞和分化的神经元为任意数量的目的。密切下列步骤AGS神经干细胞可以扩大通过两个或以上的通道,然后分化文化TUJ1阳性神经元(〜50%),无需使用有毒化学品,以尽量减少细胞分裂的数量高。缺血诱导神经元的6和神经通过MEK / ERK和PI3K/Akt生存信号通路,有助于缺血抵抗 体内 7 8(凯莱赫-安德森, 德鲁等,在准备中)在体外进行。这些独特的神经细胞的进一步鉴定,可以提前在许多方面,使用部分或所有这些方法。

Protocol

1。 AGS神经干细胞和介质的制备成人海马北极地松鼠(AGS)神经干细胞分离的方式描述9现在可以得到商业冻存瓶。细胞被运往含有干冰,以确保这些细胞在冷冻保存的状态保持在绝缘包过夜。为了保持完整性,解压后立即接收和储存的细胞,在低比-150 ° C,或在气相的液氮杜瓦。 准备agsNSC基础培养基+ 5%FBS加入5毫升FBS(LS – 1012)95毫升agsNSC基础培养基准备加入500μL?…

Discussion

AGS成人神经干细胞是强大的,可扩大许多段落,使他们基本的神经干细胞特性的研究神经干细胞的极好来源。扩张的速度大约是一增加一倍,每二十四小时,但这些细胞必须达到汇合前传,因为细胞之间的接触将有利于星形胶质细胞分化。联系介导的分化将因此导致的神经元细胞总数的比例急剧下降,如果分化开始之前,胰蛋白酶和通过。图1说明了一个AGS神经干细胞培养,应在24小时内传。

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Offenlegungen

The authors have nothing to disclose.

Acknowledgements

这项工作是由美国陆军医学研究和装备司令部授予#05178001 NS041069 – 06由美国国家神经疾病与中风研究所的支持。我们感谢乔尔Vonnahme议定书的有益的意见。

Materials

Material Name Typ Company Catalogue Number Comment
agsNSC   Lifeline FC-0004  
agsNSC Expansion kit   Lifeline LL-0008 Alternative source for DMEM/F12, B27 and rhFGFb (www.invitrogen.com)
agsNSC differentiation kit   Lifeline LL-0009 Alternative source for DMEM/F12 and ITS-x (www.invitrogen.com)
NeuraLife maintenance media kit   Lifeline LL-0012 Alternative sources are NeuraBasal (LifeLine) or Neurobasal (in vitrogen), glutamine and B27 (www.invitrogen.com)Differentiated cells are maintained for up to 3 weeks in NeuroLife, but no more than 2 weeks in Neurobasal (www.invitrogen.com)
Micrometer (such as a Bright Line Counting Chamber)   Hausser Scientific 1490 http://www.hausserscientific.com/hausserbrightlinedirect.htm
Biocoat Poly-L-Lysine coated 96 well plates   BDBioscience 356516 www.bdbiosciences.com
Large orifice pipette tips   Fisher Scientific 02-707-141 Avoids neuronal cell damage when pippetting. http://www.fishersci.com

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Drew, K. L., McGee, R. C., Wells, M. S., Kelleher-Andersson, J. A. Growth and Differentiation of Adult Hippocampal Arctic Ground Squirrel Neural Stem Cells. J. Vis. Exp. (47), e2199, doi:10.3791/2199 (2011).

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