A Quiescent, Regeneration-Responsive Tissue Engineered Mesenchymal Stem Cell Bone Marrow Niche Model via Magnetic Levitation.

A Quiescent, Regeneration-Responsive Tissue Engineered Mesenchymal Stem Cell Bone Marrow Niche Model via Magnetic Levitation.
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通过磁悬浮的静态、再生响应性组织工程间充质干细胞骨髓生态位模型。

DOI:
10.1021/acsnano.6b02841
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发表时间:
2016
期刊:
影响因子:
17.1
通讯作者:
Lewis EE
Lewis EE
中科院分区:
材料科学1区
文献类型:
--
作者:
Lewis EE

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骨髓小生境代表了一个特殊的环境,调节间充质干细胞的静止和自我更新,但根据需要促进干细胞迁移和分化。一个体现这些特征的体外模型将开启对干细胞行为进行详细研究的能力。在本文中,我们提出了一个简单的骨髓样龛模型,其中包括纳米磁悬浮干细胞培养的多细胞球体内的I型胶原凝胶。维持的干细胞是巢蛋白阳性的,并保持静止,直到再生的需求放在他们身上。为了应对共培养损伤,它们迁移并在移植后适当分化。这种组织工程再生响应骨髓样小生境模型将允许更好地理解干细胞对损伤的反应,并有助于作为多孔板形式的候选药物的测试平台。
The bone marrow niche represents a specialized environment that regulates mesenchymal stem cell quiescence and self-renewal, yet fosters stem cell migration and differentiation upon demand. Anin vitromodel that embodies these features would open up the ability to perform detailed study of stem cell behavior. In this paper we present a simple bone marrow-like niche model, which comprises of nanomagnetically levitated stem cells cultured as multicellular spheroids within a type I collagen gel. The stem cells maintained are nestin positive and remain quiescent until regenerative demand is placed upon them. In response to coculture wounding, they migrate and appropriately differentiate upon engraftment. This tissue engineered regeneration-responsive bone marrow-like niche model will allow for greater understanding of stem cell response to injury and also facilitate as a testing platform for drug candidates in a multiwell plate format.
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