Controlled adhesion and growth of long term glial and neuronal cultures on Parylene-C.

Controlled adhesion and growth of long term glial and neuronal cultures on Parylene-C.
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长期神经胶质和神经元培养的粘附和生长在戊烯-C上。

DOI:
10.1371/journal.pone.0025411
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发表时间:
2011
期刊:
影响因子:
3.7
通讯作者:
Murray AF
Murray AF
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Delivopoulos E;Murray AF

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本文探讨了 SiO2 基底上聚对二甲苯-C 图案上神经胶质细胞和神经元网络的长期发展。我们从 Sprague-Dawley (P1-P7) 大鼠海马体中采集了神经胶质细胞和神经元,并利用已建立的细胞模式技术在 3 周的时间内研究细胞迁移。这项工作表明,不受控制的神经胶质细胞有丝分裂逐渐破坏了培养早期建立的细胞模式。这种效应并非归因于聚对二甲苯-C 表面的蛋白质损失,因为基材上的氮水平在 3 周内保持稳定。培养基中加入抗有丝分裂阿糖胞苷 (Ara-C) 可调节神经胶质细胞分裂,从而充分保留初始神经胶质细胞和神经元与潜在模式的一致性。神经元凋亡通常与 Ara-C 的使用有关,通过添加脑源性神经营养因子 (BDNF) 可以减轻神经元凋亡。我们相信,通过神经胶质抑制剂和神经元启动子的正确组合,基于聚对二甲苯-C的细胞图案化方法可以生成结构化的、活跃的神经网络,并且可以在较长时间内持续和研究。据我们所知,这是第一份关于在图案化细胞培养物上同时应用 Ara-C 和 BDNF 的报告。
This paper explores the long term development of networks of glia and neurons on patterns of Parylene-C on a SiO2 substrate. We harvested glia and neurons from the Sprague-Dawley (P1–P7) rat hippocampus and utilized an established cell patterning technique in order to investigate cellular migration, over the course of 3 weeks. This work demonstrates that uncontrolled glial mitosis gradually disrupts cellular patterns that are established early during culture. This effect is not attributed to a loss of protein from the Parylene-C surface, as nitrogen levels on the substrate remain stable over 3 weeks. The inclusion of the anti-mitotic cytarabine (Ara-C) in the culture medium moderates glial division and thus, adequately preserves initial glial and neuronal conformity to underlying patterns. Neuronal apoptosis, often associated with the use of Ara-C, is mitigated by the addition of brain derived neurotrophic factor (BDNF). We believe that with the right combination of glial inhibitors and neuronal promoters, the Parylene-C based cell patterning method can generate structured, active neural networks that can be sustained and investigated over extended periods of time. To our knowledge this is the first report on the concurrent application of Ara-C and BDNF on patterned cell cultures.
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