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Differentiation of Human Neural Progenitor Cells in Functionalized Hydrogel Matrices

机译:功能化水凝胶基质中人类神经祖细胞的分化。

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Hydrogel-based three-dimensional (3D) scaffolds are widely used in the field of regenerative medicine, translational medicine, and tissue engineering. Recently, we reported the effect of scaffold formation on the differentiation and survival of human neural progenitor cells (hNPCs) using PuraMatrix? (RADA-16) scaffolds. Here, we were interested in the impact of PuraMatrix modified by the addition of short peptide sequences, based on a bone marrow homing factor and laminin. The culture and differentiation of the hNPCs in the modified matrices resulted in an approximately fivefold increase in neuronal cells. The examination of apoptotic and necrotic cells, as well as the level of the anti-apoptotic protein Bcl-2, indicates benefits for cells hosted in the modified formulations. In addition, we found a trend to lower proportions of apoptotic or necrotic neuronal cells in the modified matrices. Interestingly, the neural progenitor cell pool was increased in all the tested matrices in comparison to the standard 2D culture system, while no difference was found between the modified matrices. We conclude that a combination of elevated neuronal differentiation and a protective effect of the modified matrices underlies the increased proportion of neuronal cells.
机译:基于水凝胶的三维(3D)支架广泛用于再生医学,转化医学和组织工程领域。最近,我们报道了使用PuraMatrix®形成支架对人类神经祖细胞(hNPC)分化和存活的影响。 (RADA-16)支架。在这里,我们对基于骨髓归巢因子和层粘连蛋白的添加短肽序列修饰的PuraMatrix的影响感兴趣。 hNPC在改良基质中的培养和分化导致神经元细胞增加约五倍。凋亡和坏死细胞的检查以及抗凋亡蛋白Bcl-2的水平表明,修饰制剂中宿主的细胞受益。另外,我们发现在修饰的基质中凋亡或坏死神经元细胞比例降低的趋势。有趣的是,与标准2D培养系统相比,在所有测试的矩阵中神经祖细胞池都增加了,而修改后的矩阵之间没有发现差异。我们得出的结论是,神经元分化的增强与修饰基质的保护作用相结合,是神经元细胞比例增加的基础。

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