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Riboflavin-UVA crosslinking of amniotic membranes and its influence on the culture of adipose-derived stem cells.
Journal of the Mechanical Behavior of Biomedical Materials ( IF 3.3 ) Pub Date : 2020-03-24 , DOI: 10.1016/j.jmbbm.2020.103729
Julien H Arrizabalaga 1 , Matthias U Nollert 2
Affiliation  

The human amniotic membrane (hAM) is a collagen-based extracellular matrix whose applications are restricted by its moderate mechanical properties and rapid biodegradation. In this work, we investigate the use of riboflavin, a water-soluble vitamin, to crosslink and strengthen the human amniotic membrane under UVA light. The effect of riboflavin-UVA crosslinking on hAM properties were determined via infrared spectroscopy, uniaxial tensile testing, proteolytic degradation, permeability testing, SEM, and quantification of free (un-crosslinked) amine groups. Samples crosslinked with glutaraldehyde, a common and effective yet cytotoxic crosslinking agent, were used as controls. Improved hAM mechanical properties must not come at the expense of reduced cellular proliferation and induction capabilities. In this study, we assessed the viability, proliferation, immunophenotype, and multilineage differentiation ability of human adipose-derived stem cells seeded on riboflavin-UVA crosslinked membranes. Overall, hAM crosslinked with riboflavin-UVA benefited from a stable three-fold increase in mechanical properties (comparable to the increase seen with glutaraldehyde crosslinked membranes) and improved biodegradation, all while retaining their biocompatibility and abilities to support the cultivation and differentiation of adipose-derived stem cells. Together, these results suggest that riboflavin-UVA crosslinking is an effective strategy to enhance the hAM for tissue engineering and regenerative medicine applications establishing it as an attractive and tuneable biomaterial.



中文翻译:

核黄素-UVA交联羊膜及其对脂肪干细胞培养的影响。

人羊膜(hAM)是一种基于胶原的细胞外基质,其应用受到其适度的机械性能和快速生物降解的限制。在这项工作中,我们研究了使用核黄素(一种水溶性维生素)在UVA光照下交联和增强人类羊膜的用途。核黄素-UVA交联对hAM性能的影响通过红外光谱,单轴拉伸测试,蛋白水解降解,渗透性测试,SEM和游离(未交联)胺基团的定量确定。与戊二醛交联的样品用作对照,戊二醛是一种常见且有效的细胞毒性交联剂。改进的hAM机械性能一定不能以减少细胞增殖和诱导能力为代价。在这项研究中,我们评估了可行性,核黄素-UVA交联膜接种人脂肪干细胞的增殖,免疫表型和多系分化能力。总体而言,与核黄素-UVA交联的hAM得益于机械性能的稳定增加三倍(与戊二醛交联膜的增加相比)和改善的生物降解性,同时保留了它们的生物相容性和支持脂肪培养和分化的能力。衍生的干细胞。总之,这些结果表明,核黄素-UVA交联是增强hAM的有效策略,可用于组织工程和再生医学应用,从而将hAM确立为有吸引力且可调节的生物材料。核黄素-UVA交联膜的人脂肪干细胞的分化和多系分化能力。总体而言,与核黄素-UVA交联的hAM得益于机械性能的稳定增加三倍(与戊二醛交联膜的增加相比)和改善的生物降解性,同时保留了它们的生物相容性和支持脂肪培养和分化的能力。衍生的干细胞。总之,这些结果表明,核黄素-UVA交联是增强hAM的有效策略,可用于组织工程和再生医学应用,从而将hAM确立为有吸引力且可调节的生物材料。核黄素-UVA交联膜的人脂肪干细胞的分化和多系分化能力。总体而言,与核黄素-UVA交联的hAM得益于机械性能的稳定增加三倍(与戊二醛交联膜的增加相比)和改善的生物降解性,同时保留了它们的生物相容性和支持脂肪培养和分化的能力。衍生的干细胞。总之,这些结果表明核黄素-UVA交联是增强hAM的有效策略,可用于组织工程和再生医学应用,从而将hAM确立为有吸引力且可调节的生物材料。与核黄素-UVA交联的hAM得益于机械性能的三倍稳定增长(与戊二醛交联膜所见的增长相比)和改善的生物降解性,同时保留了它们的生物相容性和支持脂肪来源的茎的培养和分化的能力。细胞。总之,这些结果表明,核黄素-UVA交联是增强hAM的有效策略,可用于组织工程和再生医学应用,从而将hAM确立为有吸引力且可调节的生物材料。与核黄素-UVA交联的hAM得益于机械性能的三倍稳定增长(与戊二醛交联膜所见的增长相比)和改善的生物降解性,同时保留了它们的生物相容性和支持脂肪来源的茎的培养和分化的能力。细胞。总之,这些结果表明核黄素-UVA交联是增强hAM的有效策略,可用于组织工程和再生医学应用,从而将hAM确立为有吸引力且可调节的生物材料。

更新日期:2020-03-24
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