Mechanically robust and bioadhesive collagen and photocrosslinkable hyaluronic acid semi-interpenetrating networks.

Mechanically robust and bioadhesive collagen and photocrosslinkable hyaluronic acid semi-interpenetrating networks.
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DOI:
10.1089/ten.tea.2008.0441
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发表时间:
2009-07
影响因子:
--
通讯作者:
Khademhosseini A
Khademhosseini A
中科院分区:
其他
文献类型:
--
作者:
Brigham MD;Bick A;Lo E;Bendali A;Burdick JA;Khademhosseini A

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在这项工作中,我们提出了一类水凝胶,它利用了光交联透明质酸(HA)和半互穿胶原蛋白成分的有利特性。半互穿网络(半互穿网络)水凝胶的机械性能远远超过胶原凝胶或基于胶原凝胶的半互穿网络所能达到的机械性能。此外,与未改性的 HA 水凝胶相比,半互穿胶原链的包含提供了协同机械改进。胶原-HA 半互穿网络支持成纤维细胞粘附和增殖,并被证明适合高水平细胞活力的细胞封装。为了证明半互穿网络作为微型组织工程材料的实用性,通过软光刻技术制造了充满细胞的微结构和微通道。鉴于其增强的机械和仿生特性,我们预计这些材料将在组织工程和 3D 细胞培养应用中具有价值。
In this work, we present a class of hydrogels that leverage the favorable properties of the photocrosslinkable hyaluronic acid (HA) and semi-interpenetrating collagen components. The mechanical properties of the semi-interpenetrating network (semi-IPN) hydrogels far surpass those achievable with collagen gels or collagen gel based semi-IPNs. Furthermore, the inclusion of the semi-interpenetrating collagen chains provides a synergistic mechanical improvement in comparison to unmodified HA hydrogels. Collagen-HA semi-IPNs supported fibroblast adhesion and proliferation and were shown to be suitable for cell encapsulation at high levels of cell viability. To demonstrate the utility of the semi-IPNs as a microscale tissue engineering material, cell laden microstructures and microchannels were fabricated via soft lithographic techniques. Given their enhanced mechanical and biomimetic properties, we anticipate that these materials will be of value in tissue engineering and 3D cell culture applications.
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