Controlling neurite outgrowth with patterned substrates.

Controlling neurite outgrowth with patterned substrates.
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DOI:
10.1002/jbm.a.33082
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发表时间:
2011-06-15
影响因子:
4.9
通讯作者:
Ho, Chia-Chi
Ho, Chia-Chi
中科院分区:
工程技术3区
文献类型:
--
作者:
Yang, In Hong;Co, Carlos C.;Ho, Chia-Chi

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在体内,神经元形成神经突起,其中一个发育成轴突,另一些发育成树突。虽然这一神经发生过程在体内已经被很好地编程,但在体外控制神经突起延伸的数量和位置的方法有限。在这里,我们报道了一种通过使用耐细胞的聚甲基丙烯酸寡乙二醇酯(OEGMA-co-MA)或聚(乙二醇基-嵌段-乳酸)聚乙二醇酯-聚乳酸(PEGMA-co-MA)在特定区域限制神经元的方法来控制神经发生。线纹衬底减少了神经突起的多次延伸,并刺激了PC12和皮质神经元的双向突起萌发。PC12细胞在20和30微米线状图案上沿线状图案在每个方向各延伸一个突起,而皮层神经元在20和30微米线状图案上沿线状图案在每个方向上延伸一个或两个突起。对突起长度的统计分析表明,PC12细胞和皮质神经元的线状图案延伸出更长的突起。引导神经突起在图案化的衬底上形成的能力对于生成神经网络和促进突起伸长是有用的。
In vivo, neurons form neurites, one of which develops into the axon while others become dendrites. While this neuritogenesis process is well programmed in vivo, there are limited methods to control the number and location of neurite extension in vitro. Here we report a method to control neuritogenesis by confining neurons in specific regions using cell resistant poly(oligoethyleneglycol methacrylate-co-methacrylic acid (OEGMA-co-MA)) or poly(ethyleneglycol-block-lactic acid) PEG-PLA. Line patterned substrates reduce multiple extension of neurites and stimulate bi-directional neurite budding for PC12 and cortical neurons. PC12 cells on 20 and 30 µm line patterns extended one neurite in each direction along the line pattern while cortical neuron on 20 and 30 µm line patterns extended one or two neurites in each direction along the line pattern. Statistical analysis of neurite lengths revealed that PC12 cells and cortical neurons on line patterns extend longer neurites. The ability to guide formation of neurites on patterned substrates is useful for generating neural networks and promoting neurite elongation.
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