Comparison of Collagen and Polylactic Acid Multifilament Yarns for Developing Textile Scaffolds for Tendon Tissue Engineering Applications

IF 3.2 4区 医学 Q2 ENGINEERING, BIOMEDICAL
Yihan Huang, Robert Tonndorf, Jessica M. Gluck, Edwin R. Cadet, Martin W. King, Jacqueline H. Cole
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Abstract

This study is the first to compare the mechanical properties and biocompatibility of multifilament yarns made from a natural biopolymer, collagen, and from a synthetic polymer, polylactic acid (PLA), with a view toward evaluating the suitability of these two yarns for fabricating tendon tissue engineering scaffolds. Genipin, the natural plant-based anti-inflammatory and antioxidant crosslinking agent, was used to stabilize the collagen structure. A range of different genipin concentrations, crosslinking temperatures, and crosslinking times were studied, and based on higher degrees of crosslinking, reduced swelling ratio, and greater tensile strength, the recommended conditions are crosslinking the wet-spun collagen yarns with 1.0% genipin at 37°C for 72 h. During a 6-week enzymatic degradation study, the PLA yarns were more resistant to degradation and retained greater tensile strength than the genipin-crosslinked collagen yarns under both dry (4.0 ± 0.2 N vs. 2.2 ± 0.4 N) and hydrated (3.7 ± 0.3 N vs. 0.4 ± 0.1 N) conditions. After coating the PLA yarns with collagen, their biocompatibility improved, and they were able to support tendon cell growth and proliferation. In conclusion, the selection of multifilament PLA yarns coated with collagen is recommended as a promising scaffold material for tendon tissue engineering applications.

Abstract Image

胶原蛋白与聚乳酸复合长丝纱线用于肌腱组织工程纺织支架的比较
本研究首次比较了天然生物聚合物胶原蛋白和合成聚合物聚乳酸(PLA)制成的多丝纱线的力学性能和生物相容性,旨在评估这两种纱线用于制造肌腱组织工程支架的适用性。用天然植物抗炎抗氧化交联剂Genipin稳定胶原蛋白结构。对不同浓度、交联温度和交联时间进行了研究,根据交联度高、溶胀率低、抗拉强度高的要求,推荐的条件是在37℃下,用1.0%的genipin将湿纺胶原蛋白纱线交联72 h。在为期6周的酶降解研究中,PLA纱线在干燥(4.0±0.2 N vs. 2.2±0.4 N)和水合(3.7±0.3 N vs. 0.4±0.1 N)条件下都比genipin交联胶原蛋白纱线更耐降解,保持更高的拉伸强度。胶原蛋白包覆PLA纱线后,其生物相容性得到改善,能够支持肌腱细胞的生长和增殖。综上所述,选择包覆胶原蛋白的聚乳酸多长丝是一种很有前途的肌腱组织工程支架材料。
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来源期刊
CiteScore
7.50
自引率
2.90%
发文量
199
审稿时长
12 months
期刊介绍: Journal of Biomedical Materials Research – Part B: Applied Biomaterials is a highly interdisciplinary peer-reviewed journal serving the needs of biomaterials professionals who design, develop, produce and apply biomaterials and medical devices. It has the common focus of biomaterials applied to the human body and covers all disciplines where medical devices are used. Papers are published on biomaterials related to medical device development and manufacture, degradation in the body, nano- and biomimetic- biomaterials interactions, mechanics of biomaterials, implant retrieval and analysis, tissue-biomaterial surface interactions, wound healing, infection, drug delivery, standards and regulation of devices, animal and pre-clinical studies of biomaterials and medical devices, and tissue-biopolymer-material combination products. Manuscripts are published in one of six formats: • original research reports • short research and development reports • scientific reviews • current concepts articles • special reports • editorials Journal of Biomedical Materials Research – Part B: Applied Biomaterials is an official journal of the Society for Biomaterials, Japanese Society for Biomaterials, the Australasian Society for Biomaterials, and the Korean Society for Biomaterials. Manuscripts from all countries are invited but must be in English. Authors are not required to be members of the affiliated Societies, but members of these societies are encouraged to submit their work to the journal for consideration.
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