Suppr超能文献

I、II 和 III 型胶原蛋白的新鲜 3D 生物打印

FRESH 3D Bioprinting of Collagen Types I, II, and III.

作者信息

Moss Samuel P, Shiwarski Daniel J, Feinberg Adam W

机构信息

Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States of America.

Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States of America.

出版信息

ACS Biomater Sci Eng. 2025 Jan 13;11(1):556-563. doi: 10.1021/acsbiomaterials.4c01826. Epub 2024 Dec 2.

Abstract

Collagens play a vital role in the mechanical integrity of tissues as well as in physical and chemical signaling throughout the body. As such, collagens are widely used biomaterials in tissue engineering; however, most 3D fabrication methods use only collagen type I and are restricted to simple cast or molded geometries that are not representative of native tissue. Freeform reversible embedding of suspended hydrogel (FRESH) 3D bioprinting has emerged as a method to fabricate complex 3D scaffolds from collagen I but has yet to be leveraged for other collagen isoforms. Here, we developed collagen type II, collagen type III, and combination bioinks for FRESH 3D bioprinting of millimeter-sized scaffolds with micrometer scale features with fidelity comparable to scaffolds fabricated with the established collagen I bioink. At the microscale, single filament extrusions were similar across all collagen bioinks with a nominal diameter of ∼100 μm using a 34-gauge needle. Scaffolds as large as 10 × 10 × 2 mm were also fabricated and showed similar overall resolution and fidelity across collagen bioinks. Finally, cell adhesion and growth on the different collagen bioinks as either cast or FRESH 3D bioprinted scaffolds were compared and found to support similar growth behaviors. In total, our results expand the range of collagen isoform bioinks that can be 3D bioprinted and demonstrate that collagen types I, II, III, and combinations thereof can all be FRESH printed with high fidelity and comparable biological response. This serves to expand the toolkit for the fabrication of tailored collagen scaffolds that can better recapitulate the extracellular matrix properties of specific tissue types.

摘要

胶原蛋白在组织的机械完整性以及全身的物理和化学信号传导中起着至关重要的作用。因此,胶原蛋白是组织工程中广泛使用的生物材料;然而,大多数3D制造方法仅使用I型胶原蛋白,并且仅限于简单的浇铸或模制几何形状,这些形状并不代表天然组织。悬浮水凝胶的自由形式可逆嵌入(FRESH)3D生物打印已成为一种从I型胶原蛋白制造复杂3D支架的方法,但尚未用于其他胶原蛋白亚型。在这里,我们开发了用于FRESH 3D生物打印毫米级支架的II型胶原蛋白、III型胶原蛋白和组合生物墨水,其具有微米级特征,保真度与使用已确立的I型胶原蛋白生物墨水制造的支架相当。在微观尺度上,使用34号针头,所有胶原蛋白生物墨水的单丝挤出物的标称直径约为100μm,情况相似。还制造了尺寸达10×10×2mm的支架,并且在所有胶原蛋白生物墨水中显示出相似的整体分辨率和保真度。最后,比较了不同胶原蛋白生物墨水作为浇铸或FRESH 3D生物打印支架上的细胞粘附和生长情况,发现它们支持相似的生长行为。总的来说,我们的结果扩展了可以进行3D生物打印的胶原蛋白亚型生物墨水的范围,并证明I型、II型、III型胶原蛋白及其组合都可以以高保真度和可比的生物学反应进行FRESH打印。这有助于扩展用于制造定制胶原蛋白支架的工具包,该支架可以更好地再现特定组织类型的细胞外基质特性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0cd6/11733922/488c0ba1c337/ab4c01826_0001.jpg

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验