酶处理的海藻酸盐/壳聚糖水溶胶在海绵状生物相容性支架中诱导人脂肪来源多能基质细胞软骨分化的潜在生物医学应用。
Potential Biomedical Application of Enzymatically Treated Alginate/Chitosan Hydrosols in Sponges-Biocompatible Scaffolds Inducing Chondrogenic Differentiation of Human Adipose Derived Multipotent Stromal Cells.
作者信息
Zimoch-Korzycka Anna, Śmieszek Agnieszka, Jarmoluk Andrzej, Nowak Urszula, Marycz Krzysztof
机构信息
Department of Animal Products Technology and Quality Management, Faculty of Food Science, Wrocław University of Environmental and Life Sciences, 37 Chelmonskiego St., 51-630 Wrocław, Poland.
Department of Environment Hygiene and Animal Welfare, The Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Sciences, 38 C Chelmonskiego St., 50-630 Wrocław, Poland.
出版信息
Polymers (Basel). 2016 Aug 26;8(9):320. doi: 10.3390/polym8090320.
Current regenerative strategies used for cartilage repair rely on biomaterial functionality as a scaffold for cells that may have potential in chondrogenic differentiation. The purpose of the research was to investigate the biocompatibility of enzymatically treated alginate/chitosan hydrosol sponges and their suitability to support chondrogenic differentiation of human adipose derived multipotent stromal cells (hASCs). The alginate/chitosan and enzyme/alginate/chitosan sponges were formed from hydrosols with various proportions and were used as a biomaterial in this study. Sponges were tested for porosity and wettability. The porosity of each sponge was higher than 80%. An equal dose of alginate and chitosan in the composition of sponges improved their swelling ability. It was found that equal concentrations of alginate and chitosan in hydrosols sponges assure high biocompatibility properties that may be further improved by enzymatic treatment. Importantly, the high biocompatibility of these biomaterials turned out to be crucial in the context of hydrosols' pro-chondrogenic function. After exposure to the chondrogenic conditions, the hASCs in N/A/C and L/A/C sponges formed well developed nodules and revealed increased expression of collagen type II, aggrecan and decreased expression of collagen type I. Moreover, in these cultures, the reactive oxygen species level was lowered while superoxide dismutase activity increased. Based on the obtained results, we conclude that N/A/C and L/A/C sponges may have prospective application as hASCs carriers for cartilage repair.
目前用于软骨修复的再生策略依赖于生物材料的功能,将其作为可能具有软骨分化潜能的细胞的支架。本研究的目的是研究酶处理的藻酸盐/壳聚糖水溶胶海绵的生物相容性及其支持人脂肪来源的多能基质细胞(hASC)软骨分化的适用性。藻酸盐/壳聚糖和酶/藻酸盐/壳聚糖海绵由不同比例的水溶胶形成,并在本研究中用作生物材料。对海绵进行了孔隙率和润湿性测试。每个海绵的孔隙率高于80%。海绵成分中藻酸盐和壳聚糖剂量相等可提高其膨胀能力。研究发现,水溶胶海绵中藻酸盐和壳聚糖浓度相等可确保高生物相容性,酶处理可进一步改善这种性能。重要的是,在水溶胶的促软骨生成功能方面,这些生物材料的高生物相容性至关重要。在暴露于软骨生成条件后,N/A/C和L/A/C海绵中的hASC形成了发育良好的结节,并显示出II型胶原蛋白、聚集蛋白聚糖表达增加,I型胶原蛋白表达减少。此外,在这些培养物中,活性氧水平降低,而超氧化物歧化酶活性增加。基于所得结果,我们得出结论,N/A/C和L/A/C海绵可能作为hASC载体在软骨修复方面具有潜在应用前景。