一个生物玻璃-多分子 (乳酸-co-糖醇酸) 脚手架@纤维素水凝构造,以支持内生体骨形成
Dhanalakshmi Jeyachandran1, Monzur Murshed2, Lisbet Haglund3
1Department of Mining and Materials Engineering, McGill University, Montreal, H3A 0C1, Canada.
Advanced healthcare materials
|July 18, 2023
概括
这项研究引入了一种新的Bioglass-Poly lactic-co-glycolic acid@fibrin支架,该支架指导介质干细胞 (MSC) 通过内分泌骨化,促进骨形成,而无需外部因素.
科学领域:
- 生物材料科学 生物材料科学
- 再生医学是一种再生医学.
- 组织工程是组织工程.
背景情况:
- 直接骨组织工程面临的挑战是由于伤害部位的氧气供应不足.
- 涉及软骨中间体的内分泌骨化途径为骨再生提供了耐缺氧的替代方案.
- 目前在这种途径中诱导缩的方法通常依赖于复杂的生物因素.
研究的目的:
- 开发一种新的支架结构,可以顺序支持内分泌骨化阶段.
- 为了研究一个生物玻璃-多-乳糖-同甘油酸@纤维素 (Bg-PLGA@纤维素) 复合物是否可以诱导介质干细胞 (MSC) 增高和骨质生成,而无需外部诱导因素.
- 评估脚手架内部材料线索的潜力,以推动骨再生.
主要方法:
- 用纤维素水凝透过的多孔生物玻璃-多 (乳酸-co-糖酸) (Bg-PLGA) 芯的制造.
- 在构造的纤维素凝组件中载入介质干细胞 (MSCs).
- 评估MSC的行为,包括chondrogenesis,高,矩阵矿化和骨质生成,以响应脚手架的材料特性.
主要成果:
- 该Bg-PLGA@纤维素构造成功诱导了MSC缩,矩阵矿化和骨质生成.
- 凝/脚手架接口的MSC表现出形态变化,表明骨质母细胞类的分化与缩性红细胞.
- 仅靠脚手架的材料组成就足以驱动内分泌骨化的连续阶段.
结论:
- Bg-PLGA@纤维素构造有效地模仿了使用材料线索的自然内分泌骨化过程.
- 这种方法绕过了对外部生物因素的需求,简化了骨再生过程.
- 这些发现表明,骨组织工程中的临床翻译是一个有希望的策略,减少了体外培养时间和复杂性.
相关概念视频
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The Extracellular Matrix
Overview
In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
Composition of the Extracellular Matrix
The extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse...
In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
Composition of the Extracellular Matrix
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Connective tissue proper includes loose...
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