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Novel nanometer scaffolds regulate the biological behaviors of neural stem cells

Date:
July 25, 2013
Source:
Neural Regeneration Research
Summary:
The surface characteristics of nanoscaffolds made by nanotechnology are more similar to the three-dimensional topological structure of the extracellular matrix and the effects on the biological behaviors of cells and tissue repair are more beneficial.
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The directions of the fibers in aligned collagen nanometer scaffolds were generally similar.
Credit: Neural Regeneration Research

The surface characteristics of nanoscaffolds made by nanotechnology are more similar to the three-dimensional topological structure of the extracellular matrix and the effects on the biological behaviors of cells and tissue repair are more beneficial. Dr. Jihui Zhou and team from the Fifth Hospital Affiliated to Qiqihar Medical University prepared aligned and randomly oriented collagen nanofiber scaffolds using electronic spinning technology.

The diameters and appearance of prepared scaffolds reached the standards of tissue-engineered nanometer scaffolds. The nanofiber scaffolds were characterized by a high swelling ratio, high porosity and good mechanical properties. The proliferation of spinal cord-derived neural stem cells on novel nanofiber scaffolds was obviously enhanced.

The expression levels of cyclin D1 and cyclin-dependent kinase 2 were increased. Bcl-2 expression was significantly increased, but Bax and caspase-3 gene expressions were obviously decreased. There was no significant difference in the differentiation of neural stem cells into neurons on aligned and randomly oriented collagen nanofiber scaffolds.

These results, which were published in the Neural Regeneration Research indicate that novel nanofiber scaffolds could promote the proliferation of spinal cord-derived neural stem cells and inhibit apoptosis without inducing differentiation. Nanofiber scaffolds regulate apoptosis and proliferation in neural stem cells by altering gene expression.


Story Source:

The above post is reprinted from materials provided by Neural Regeneration Research. Note: Materials may be edited for content and length.


Journal Reference:

  1. Zhou JH, Sui FG, Yao M, Wang YS, Liu YG, Tian FP, Li Q, He XF, Shao L, Liu ZQ. Novel nanometer scaffolds regulate the biological behaviors of neural stem cells. Neural Regen Res., 2013;8(16):1455-1464

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Neural Regeneration Research. "Novel nanometer scaffolds regulate the biological behaviors of neural stem cells." ScienceDaily. ScienceDaily, 25 July 2013. <www.sciencedaily.com/releases/2013/07/130725104954.htm>.
Neural Regeneration Research. (2013, July 25). Novel nanometer scaffolds regulate the biological behaviors of neural stem cells. ScienceDaily. Retrieved July 1, 2015 from www.sciencedaily.com/releases/2013/07/130725104954.htm
Neural Regeneration Research. "Novel nanometer scaffolds regulate the biological behaviors of neural stem cells." ScienceDaily. www.sciencedaily.com/releases/2013/07/130725104954.htm (accessed July 1, 2015).

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