具有不同分子量的多 (乳酸-co-甘油酸) 微囊的骨质效应,封装了骨形态基因蛋白2
Lihong Yuan1,2,3, Chen Chen1,2,3, Yudi Ma2,3
1Dept. of Endodontics, the Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing 210029, China.
概括
带有骨形态基因蛋白2 (BMP-2) 的聚乳-同-甘油酸 (PLGA) 微囊被创建,具有不同的分子量. 较高分子量PLGA (30,000) 在MC3T3-E1细胞中显示出优异的长期骨质诱导.
科学领域:
- 生物材料科学 生物材料科学
- 组织工程是组织工程.
- 再生医学是一种再生医学.
背景情况:
- 骨形态遗传蛋白2 (BMP-2) 对于骨再生至关重要.
- 从输送系统中控制BMP-2释放是有效骨质生成的关键.
- 聚乳-同-甘油酸 (PLGA) 是一种广泛用于药物输送的可生物降解聚合物.
研究的目的:
- 研究PLGA分子重量对BMP-2释放动态的影响.
- 为了评估BMP-2装载的PLGA微囊的骨质生成潜力,具有不同的分子量.
- 确定最佳的PLGA微囊配方,以增强骨质母细胞活性.
主要方法:
- 使用微注射,BMP-2被封装在两个分子量 (12,000和30,000) 的PLGA微中.
- 评估了微囊形态,持续释放,细胞兼容性,化疗和骨质活性.
- 技术包括SEM,PBS浸泡,calcein-AM/PI,CCK-8,Transwell测定,ALP活动和阿里扎林红色S染色.
主要成果:
- 这两种PLGA微囊类型都显示出良好的细胞兼容性和光滑的形态.
- 这12000个分子量微囊表现出卓越的化学作用.
- 这3万个分子量微囊提供了更长的持续释放,减少了最初的爆发释放 (大约2倍). 25%) 和更好的长期骨质生成诱导.
结论:
- PLGA分子量有效调节微囊中的BMP-2释放.
- 较高分子量PLGA (30,000) 微囊在诱导MC3T3-E1细胞的长期骨质生成能力方面更有效.
- 这表明,在骨再生疗法中,有针对性PLGA-BMP-2配方的潜力.
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