Synthetic hydrogels for human intestinal organoid generation and colonic wound repair.

Synthetic hydrogels for human intestinal organoid generation and colonic wound repair.
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DOI:
10.1038/ncb3632
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发表时间:
2017-11
影响因子:
21.3
通讯作者:
García AJ
García AJ
中科院分区:
生物学1区
文献类型:
--
作者:
Cruz-Acuña R;Quirós M;Farkas AE;Dedhia PH;Huang S;Siuda D;García-Hernández V;Miller AJ;Spence JR;Nusrat A;García AJ

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从多能干细胞体外分化人类肠道类器官(HIO)是一种无与伦比的系统,用于创建复杂的多细胞3D结构,能够产生类似于天然人体组织的组织。目前用于产生HIO的方法依赖于在不确定的肿瘤来源的细胞外基质(ECM)中的生长,这严重限制了类器官技术用于再生和转化医学。在这里,我们开发了一种基于四臂马来酰亚胺封端的聚(乙二醇)大分子单体的完全定义的合成水凝胶,该大分子单体支持HIO的稳健且高度可重复的体外生长和扩增,使得3D结构从未嵌入肿瘤衍生的ECM中。我们还证明,水凝胶作为一种可注射的HIO载体,可以被输送到受损的肠粘膜,导致HIO植入和改善结肠伤口修复。总之,这些研究表明,HIO可用于治疗肠道损伤。
In vitro differentiation of human intestinal organoids (HIOs) from pluripotent stem cells is an unparalleled system for creating complex, multi-cellular 3D structures capable of giving rise to tissue analogous to native human tissue. Current methods for generating HIOs rely on growth in an undefined tumor-derived extracellular matrix (ECM), which severely limits use of organoid technologies for regenerative and translational medicine. Here, we developed a fully defined, synthetic hydrogel based on a four-armed, maleimide-terminated poly(ethylene glycol) macromer that supports robust and highly reproducible in vitro growth and expansion of HIOs such that 3D structures are never embedded in tumor-derived ECM. We also demonstrate that the hydrogel serves as an injectable HIO vehicle that can be delivered into injured intestinal mucosa resulting in HIO engraftment and improved colonic wound repair. Together, these studies show proof-of-concept that HIOs may be used therapeutically to treat intestinal injury.
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