The Regeneration of Large-Sized and Vascularized Adipose Tissue Using a Tailored Elastic Scaffold and dECM Hydrogels.

The Regeneration of Large-Sized and Vascularized Adipose Tissue Using a Tailored Elastic Scaffold and dECM Hydrogels.
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使用定制的弹性支架和DECM水凝胶再生大尺寸和血运丰富的脂肪组织。

DOI:
10.3390/ijms222212560
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发表时间:
2021-11-22
影响因子:
5.6
通讯作者:
Jung Y
Jung Y
中科院分区:
生物学2区
文献类型:
--
作者:
Kim SH;Kim D;Cha M;Kim SH;Jung Y

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采用3D打印技术和凝胶压制法相结合的方法制备了一种具有通道和孔隙结构的圆顶形弹性聚(l-丙交酯-co-己内酯)(PLCL)支架(直径13 mm,厚度6.5 mm),用于患者特异性再生。将PLCL支架与脂肪脱细胞细胞外基质(adECM)和心脏脱细胞外基质(hdECM)水凝胶和人脂肪源性干细胞(hADSC)组合以促进脂肪生成和血管生成。这些支架具有与天然脂肪组织相似的机械性能,用于改善组织再生。体外实时PCR的结果显示dECM水凝胶混合物诱导脂肪形成。此外,12周的体内研究表明,含有水凝胶混合物(hdECM/adECM(80:20))和hADSC的组织工程化PLCL支架促进血管生成和脂肪组织形成,并抑制细胞凋亡。因此,我们期望我们的构建物将在临床上适用于作为用于患者特异性大尺寸脂肪组织再生的材料。
A dome-shaped elastic poly(l-lactide-co-caprolactone) (PLCL) scaffold with a channel and pore structure was fabricated by a combinative method of 3D printing technology and the gel pressing method (13 mm in diameter and 6.5 mm in thickness) for patient-specific regeneration. The PLCL scaffold was combined with adipose decellularized extracellular matrix (adECM) and heart decellularized extracellular matrix (hdECM) hydrogels and human adipose-derived stem cells (hADSCs) to promote adipogenesis and angiogenesis. These scaffolds had mechanical properties similar to those of native adipose tissue for improved tissue regeneration. The results of the in vitro real-time PCR showed that the dECM hydrogel mixture induces adipogenesis. In addition, the in vivo study at 12 weeks demonstrated that the tissue-engineered PLCL scaffolds containing the hydrogel mixture (hdECM/adECM (80:20)) and hADSCs promoted angiogenesis and adipose tissue formation, and suppressed apoptosis. Therefore, we expect that our constructs will be clinically applicable as material for the regeneration of patient-specific large-sized adipose tissue.
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