Tissue engineering the retinal ganglion cell nerve fiber layer.

Tissue engineering the retinal ganglion cell nerve fiber layer.
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DOI:
10.1016/j.biomaterials.2013.02.027
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发表时间:
2013-06
期刊:
影响因子:
14
通讯作者:
Goldberg, Jeffrey L.
Goldberg, Jeffrey L.
中科院分区:
工程技术1区
文献类型:
--
作者:
Kador, Karl E.;Montero, Ramon B.;Venugopalan, Praseeda;Hertz, Jonathan;Zindell, Allison N.;Valenzuela, Daniel A.;Uddin, Mohammed S.;Lavik, Erin B.;Muller, Kenneth J.;Andreopoulos, Fotios M.;Goldberg, Jeffrey L.

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青光眼和黄斑变性等视网膜退行性疾病影响着全世界数百万人,并最终导致视网膜细胞死亡和失明。光感受器的细胞移植治疗显示功能的整合和恢复,但移植到神经节细胞层更为复杂,需要从移植细胞的轴突引导到视神经头,以达到大脑中的目标。在这里,我们创造了一个可生物降解的电纺丝(ES)支架,旨在引导视网膜神经节细胞(RGC)轴突的径向生长,模仿视网膜轴突的方向。使用这种支架,我们观察到RGC存活率增加,电生理特性没有显著变化。当对排列进行分析时,观察到81%的RGCs沿支架纤维径向投射轴突,与视网膜外植体的神经纤维层相比,在排列方面没有差异。当移植到视网膜外植体上时,ES支架上的RGCs遵循宿主视网膜神经纤维的径向模式,而直接移植的RGCs则以随机模式生长轴突。因此,使用这种支架作为细胞递送装置代表着细胞移植疗法用于青光眼和其他视网膜退行性疾病治疗的重要一步。
Retinal degenerative diseases, such as glaucoma and macular degeneration, affect millions of people worldwide and ultimately lead to retinal cell death and blindness. Cell transplantation therapies for photoreceptors demonstrate integration and restoration of function, but transplantation into the ganglion cell layer is more complex, requiring guidance of axons from transplanted cells to the optic nerve head in order to reach targets in the brain. Here we create a biodegradable electrospun (ES) scaffold designed to direct the growth of retinal ganglion cell (RGC) axons radially, mimicking axon orientation in the retina. Using this scaffold we observed an increase in RGC survival and no significant change in their electrophysiological properties. When analyzed for alignment, 81% of RGCs were observed to project axons radially along the scaffold fibers, with no difference in alignment compared to the nerve fiber layer of retinal explants. When transplanted onto retinal explants, RGCs on ES scaffolds followed the radial pattern of the host retinal nerve fibers, whereas RGCs transplanted directly grew axons in a random pattern. Thus, the use of this scaffold as a cell delivery device represents a significant step towards the use of cell transplant therapies for the treatment of glaucoma and other retinal degenerative diseases.
DOI: 10.1038/nn1088
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期刊: BIOCHEMISTRY
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