J Endod:3维Bioprinting Alginate/Gelatin Hydrogel支架提取物对人牙髓干细胞增殖和分化的影响

2019-05-20 lishiting MedSci原创

Alginate/gelatin hydrogel (Alg-Gel)支架已经应用于组织工程,但是其在牙组织再生中的研究还很少。这篇研究的目的是为了调查这种支架材料对人牙髓干细胞(hDPSCs)的影响。

Alginate/gelatin hydrogel (Alg-Gel)支架已经应用于组织工程,但是其在牙组织再生中的研究还很少。这篇研究的目的是为了调查这种支架材料对人牙髓干细胞(hDPSCs)的影响。

研究将hDPSCs 培养于含Alg-Gel和3D-printed Alg-Gel支架培养基中。采用fluorescein isothiocyanate-phalloidin和扫描电子显微镜检测和比较细胞增殖和粘附情况。采用CCK-8和流式细胞仪检测培养于含Alg-Gel或3D-printed Alg-Gel 支架水提取物全培养基中hDPSCs增殖的变化。细胞培养于含Alg-Gel或3D-printed Alg-Gel 支架水提取物的矿化培养基7或14天,茜素红S染色和碱性磷酸酶染色观察细胞矿化情况。实时聚合酶链式反应和western-blot检测矿化相关mRNA和蛋白的表达。元素分析仪检测材料提取物成分。

结果显示,3D-printed Alg-Gel支架上的细胞生长和粘附要明显高于Alg-Gel支架。与Alg-Gel支架相比,3D-printed支架水提取物能够促进细胞增殖,并且3D-printed支架提取物效果更佳。与阴性对照相比,3D-printed Alg-Gel支架和Alg-Gel支架能够增加骨样结节形成和碱性磷酸酶染色。矿化相关基因表达也明显增加。3D-printed支架水提取物所含的钙和磷离子明显高于Alg-Gel支架。

结论:这些结果表明,与Alg-Gel支架相比,3D-printed Alg-Gel支架更适合hDPSCs生长,并且支架提取物能够更好的促进促进细胞增殖和分化。

原始出处:

Yu H, Zhang X, et al. Effects of 3-dimensional Bioprinting Alginate/Gelatin Hydrogel Scaffold Extract on Proliferation and Differentiation of Human Dental Pulp Stem Cells. J Endod. 2019 May 2. pii: S0099-2399(19)30208-0. doi: 10.1016/j.joen.2019.03.004.

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    2019-10-25 liye789132251
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    2019-06-20 sunylz
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    2019-09-20 jxrzshh
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