具有增强的高阶形成的可光交叉链接的三环螺旋蛋白质,用于生物材料应用
Gopalan Akilandeswari1, Vijayakumar Varshashankari1, Shalini Muthusamy1,2
1Division of Biochemistry and Biotechnology, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute, Chennai, Tamil nadu, India.
Journal of biomedical materials research. Part A
|March 30, 2024
概括
研究人员通过添加氨酸来设计细菌原蛋白类蛋白质,促进纳米纤维的形成并创造稳定,支持细胞的水凝,以加速伤口愈合. 这为再生医学提供了一个有前途的生物材料.
科学领域:
- 生物材料科学 生物材料科学
- 蛋白质工程是指蛋白质工程.
- 组织工程是组织工程.
背景情况:
- 细菌原蛋白与动物原蛋白相比,具有优势,包括纯度,可定制性和降低过敏性.
- 工程原蛋白样蛋白旨在增强它们的结构和功能,用于特定的应用.
- 氨酸是一种氨基酸,对各种蛋白质中纤维素的形成至关重要.
研究的目的:
- 研究氨酸融入细菌原样蛋白 (Scl2) 对其自我组装和纤维细胞形成的影响.
- 评估氨酸修饰的细菌原蛋白在制造功能性水凝方面的潜力.
- 评估这些水凝在支持细胞活力和促进伤口愈合方面的有效性.
主要方法:
- 设计和合成一种细菌原蛋白样蛋白 (Scl2) 与引入的氨酸残留物.
- 生物物理分析以评估蛋白质的结构稳定性和自我组装.
- 在暴露于光线下通过di-tyrosine交联形成水凝.
- 在实验室中使用小鼠纤维细胞 (NIH / 3T3) 细胞进行细胞活力测定.
- 在小鼠模型中进行体内伤口愈合研究.
主要成果:
- 添加氨酸并没有影响蛋白质的结构稳定性.
- 改造后的Scl2蛋白体现出增强的自我组装,形成纳米纤维,与原生Scl2.2不同.
- 稳定的水凝是通过光诱导的二-铁素交联形成的.
- 由此产生的水凝支持NIH/3T3细胞活力.
- 在使用工程水凝的小鼠模型中观察到加速的伤口愈合.
结论:
- 氨酸残留物有针对性地被纳入,可以增强细菌原蛋白类蛋白质的纤维形成能力.
- riboflavin 化学结构使得从工程化原蛋白中产生强大的,与细胞相容的水凝.
- 这些发现为组织工程和再生医学的应用提供了重大潜力,特别是用于伤口愈合.
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