Autologous stromal vascular fraction-loaded hyaluronic acid/gelatin-biphasic calcium phosphate scaffold for bone tissue regeneration

IF 8.1 1区 工程技术 Q1 MATERIALS SCIENCE, BIOMATERIALS Materials science & engineering. C, Materials for biological applications Pub Date : 2022-01-01 DOI:10.1016/j.msec.2021.112533
Seong-su Park , Myeongki Park , Byong-Taek Lee
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引用次数: 6

Abstract

Bone defect augmentation with synthetic materials is crucial due to the unavoidable limitations of auto- and allografting. Although there are different promising synthetic materials for filling bone defects, the functionalization of these materials with cells is still challenging due to the lack of ideal cell sources. Here, we used stromal vascular fraction (SVF) heterogeneous cells that could be obtained from autologous adipose tissue to functionalize hyaluronic acid/gelatin-biphasic calcium phosphate (HyA-Gel/BCP) scaffolds for bone regeneration. The SVF cells were isolated, and the cellular composition and osteogenic differentiation potential were analyzed. Then, they were cultured on HyA-Gel/BCP scaffolds for in vitro characterization. An In vivo evaluation of the autologous SVF-loaded HyA-Gel/BCP scaffolds was performed using a rat skull critical-size defect model. The results showed that the SVF was successfully isolated and contained different types of cells, including mesenchymal stem like-cells with osteogenic differentiation ability. Also, the SVF cells could be cultured and expanded on the HyA-Gel/BCP scaffolds without affecting their viability. In vivo implantation of autologous SVF-loaded HyA-Gel/BCP scaffolds showed excellent bone regeneration compared to unloaded HyA-Gel/BCP scaffolds. Thus, autologous SVF-loaded HyA-Gel/BCP scaffolds could be a promising transplantable bone grafting material for bone tissue engineering.

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自体间质血管片段负载透明质酸/明胶-双相磷酸钙支架用于骨组织再生
由于自体和同种异体移植不可避免的局限性,人工合成材料对骨缺损的修复至关重要。虽然有不同的有前途的合成材料填补骨缺损,但由于缺乏理想的细胞来源,这些材料与细胞的功能化仍然具有挑战性。在这里,我们使用从自体脂肪组织中获得的基质血管组分(SVF)异质细胞来功能化透明质酸/明胶-双相磷酸钙(HyA-Gel/BCP)支架用于骨再生。分离SVF细胞,分析其细胞组成及成骨分化潜能。然后将其培养在HyA-Gel/BCP支架上进行体外鉴定。采用大鼠颅骨临界尺寸缺损模型对自体负载svf的HyA-Gel/BCP支架进行体内评价。结果表明,成功分离的SVF含有不同类型的细胞,包括具有成骨分化能力的间充质干细胞样细胞。此外,SVF细胞可以在HyA-Gel/BCP支架上培养和扩增,而不影响其生存能力。与未加载的HyA-Gel/BCP支架相比,自体svf负载的HyA-Gel/BCP支架在体内植入表现出良好的骨再生能力。因此,自体负载svf的HyA-Gel/BCP支架可能是一种很有前途的骨组织工程移植骨材料。
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来源期刊
CiteScore
12.60
自引率
0.00%
发文量
28
审稿时长
3.3 months
期刊介绍: Materials Today is a community committed to fostering the creation and sharing of knowledge and experience in materials science. With the support of Elsevier, this community publishes high-impact peer-reviewed journals, organizes academic conferences, and conducts educational webinars, among other initiatives. It serves as a hub for advancing materials science and facilitating collaboration within the scientific community.
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