老化药物通过细胞衰老相关的炎症信号通路改善了骨再生的失败
Xinchen Wang1, Yue Zhou2, Chuyi Luo3
1Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Institute of Stomatological Research, Sun Yat-sen University, Guangzhou, Guangdong, China; Department of Orthodontics, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata, Osaka 573-1121, Japan.
概括
达沙替尼和奎尔素 (DQ) 助长骨形成,通过清除受污染的骨植入物中的衰老细胞. 这项研究表明,DQ可以减少炎症并改善骨再生,为骨缺陷提供治疗潜力.
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.
- 细胞生物学 细胞生物学
背景情况:
- 压力诱导的过早衰老 (SIPS) 细胞会损害组织功能.
- 像达沙替尼和奎尔丁 (DQ) 这样的老化剂可以消除老化的细胞.
- 骨感染会阻碍骨再生,特别是在像α-酸 (α-TCP) 这样的植入物中.
研究的目的:
- 通过SIPS细胞清除,研究DQ的使用是否能改善由炎症和污染引起的骨修损伤.
- 探索DQ在改善口面骨缺陷中的Lipopolysaccharide (LPS) 污染的植入物中的骨形成的机制.
主要方法:
- 将α-TCP和LPS污染的α-TCP植入老鼠的骨缺陷中.
- 通过口服DQ,通过微计算机断层扫描和组织学评估骨形成.
- 对衰老细胞标记物 (p21,p16),炎症,巨细胞,活性氧物种和耐酸酸酶的分析.
主要成果:
- DQ的使用显著增强了缺陷部位的骨形成.
- DQ治疗减少了衰老细胞标记物,炎症,巨细胞透,活性氧物种和骨质细胞活性.
- 在体外,DQ部分缓解了衰老标志物和与衰老相关的分泌表型.
结论:
- 被LPS污染的α-TCP生物材料诱导细胞衰老,并阻碍骨再生.
- 老化剂 (DQ) 在减轻与感染相关的骨形成不良影响方面显示出显著的治疗潜力.
- 在受污染的骨缺陷模型中,DQ提高了骨再生能力.
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