Three-dimensional paper-based model for cardiac ischemia.

Three-dimensional paper-based model for cardiac ischemia.
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DOI:
10.1002/adhm.201300575
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发表时间:
2014-07
影响因子:
10
通讯作者:
Whitesides GM
Whitesides GM
中科院分区:
工程技术1区
文献类型:
--
作者:
Mosadegh B;Dabiri BE;Lockett MR;Derda R;Campbell P;Parker KK;Whitesides GM

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缺血的体外模型在历史上还没有重现3D组织中发生的细胞相互作用和分子梯度。这项工作展示了一种基于纸张的3D培养系统,该系统模拟了缺血期间心脏细胞群体之间发生的一些相互作用。将含有悬浮在水凝胶中的细胞的多层纸堆叠以形成组织的分层3D模型。可以调节氧气和葡萄糖进入该3D系统的质量输送,以在堆叠的底层中诱导缺血环境。这种缺血性应激诱导堆叠底部的心肌细胞分泌趋化因子,该趋化因子随后触发驻留在相邻层中的成纤维细胞向缺血区域迁移。这项工作证明了有用的图案,堆叠纸进行体外机械研究的细胞运动性和活力的模型内的层状心室组织的心脏。
In vitro models of ischemia have not historically recapitulated the cellular interactions and gradients of molecules that occur in a 3D tissue. This work demonstrates a paper-based 3D culture system that mimics some of the interactions that occur among populations of cells in the heart during ischemia. Multiple layers of paper containing cells, suspended in hydrogels, are stacked to form a layered 3D model of a tissue. Mass transport of oxygen and glucose into this 3D system can be modulated to induce an ischemic environment in the bottom layers of the stack. This ischemic stress induces cardiomyocytes at the bottom of the stack to secrete chemokines that subsequently trigger fibroblasts residing in adjacent layers to migrate toward the ischemic region. This work demonstrates the usefulness of patterned, stacked paper for performing in vitro mechanistic studies of cellular motility and viability within a model of the laminar ventricle tissue of the heart.
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