Sustained volume retention in vivo with adipocyte and lipoaspirate seeded silk scaffolds.

Sustained volume retention in vivo with adipocyte and lipoaspirate seeded silk scaffolds.
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DOI:
10.1016/j.biomaterials.2013.01.058
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发表时间:
2013-04
期刊:
影响因子:
14
通讯作者:
Kaplan, David L.
Kaplan, David L.
中科院分区:
工程技术1区
文献类型:
--
作者:
Bellas, Evangelia;Panilaitis, Bruce J. B.;Glettig, Dean L.;Kirker-Head, Carl A.;Yoo, James J.;Marra, Kacey G.;Rubin, J. Peter;Kaplan, David L.

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目前软组织再生的方法包括使用脂肪移植物、天然或合成生物材料作为填充材料。脂肪移植物和天然生物材料吸收过快,无法维持组织再生,而合成材料不会降解或促进组织再生。在此,我们提出一种稳定填充软组织缺损的简单方法。在这项研究中,我们在皮下大鼠模型中将吸脂物与丝蛋白基质相结合。丝生物材料可以根据各种需求进行定制,在这里我们将丝生物材料加工成多孔海绵状,以便组织向内生长,同时保持机械强度。在18个月的时间里,接种吸脂物的丝蛋白基质再生了皮下脂肪组织,同时保持了最初的植入体积。单独的丝蛋白基质不足以再生脂肪组织,而是产生了纤维组织,尽管植入体积得以维持。这项工作通过匹配生物材料降解和组织再生特性,对填充软组织缺损的标准方法进行了重大改进。
Current approaches to soft tissue regeneration include the use of fat grafts, natural or synthetic biomaterials as filler materials. Fat grafts and natural biomaterials resorb too quickly to maintain tissue regeneration, while synthetic materials do not degrade or regenerate tissue. Here, we present a simple approach to volume stable filling of soft tissue defects. In this study, we combined lipoaspirate with a silk protein matrix in a subcutaneous rat model. Silk biomaterials can be tailored to fit a variety of needs, and here were processed silk biomaterials into a porous sponge format to allow for tissue ingrowth while remaining mechanically robust. Over an 18 month period, the lipoaspirate seeded silk protein matrix regenerated subcutaneous adipose tissue while maintaining the original implanted volume. A silk protein matrix alone was not sufficient to regenerate adipose tissue, but yielded a fibrous tissue, although implanted volume was maintained. This work presents a significant improvement to the standard approaches to filling soft tissue defects by matching biomaterial degradation and tissue regeneration profiles.
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期刊: ADIPOSE-DERIVED STEM CELLS: METHODS AND PROTOCOLS
影响因子: --
作者:
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