通过mTOR信号通路控制牙纸干细胞衰老
Lu Chen1, Xiping Wang2, Sha Tian3
1Department of Oral Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Shanghai 200011, People's Republic of China.
Stem cells (Dayton, Ohio)
|August 22, 2024
概括
衰老会影响人类牙髓干细胞 (HDPSCs) 的再生. 使用OSU-T315针对ILK/AKT/mTOR/STAT1通路,可以使老年HDPSC复苏,并增强骨再生.
科学领域:
- 干细胞生物学 干细胞生物学
- 老年学是一门学科.
- 再生医学是一种再生医学.
背景情况:
- 人类牙纤维干细胞 (HDPSCs) 呈现出与年龄相关的增殖和分化的下降.
- 这种下降会影响牙组织的平衡和再生潜力.
- 调节HDPSC衰老的特定蛋白质在很大程度上是未知的.
研究的目的:
- 为了研究HDPSCs在不同年龄组的蛋白质组概况.
- 阐明HDPSCs与年龄相关的变化背后的分子机制.
- 为了确定缓解HDPSC衰老的潜在治疗点.
主要方法:
- 来自不同年龄组的HDPSC的蛋白质组分析.
- 生物信息分析以确定与年龄相关的蛋白质和途径.
- 用ILK抑制剂 (OSU-T315) 和mTOR抑制剂 (拉帕米) 进行老年HDPSC体外治疗.
- 评估细胞增殖,衰老标志物 (p21,p53,SA-β-gal) 和骨质分化.
- 在鼠骨缺陷模型中对骨再生的体内评估.
主要成果:
- 随着年龄的增长,HDPSC的增殖和骨质分化减少,老化标志物增加.
- 生物信息分析将与年龄相关的蛋白质与哺乳动物的目标拉巴胺素 (mTOR) 信号通路联系起来.
- OSU-T315治疗使老年HDPSC复苏,减少衰老标志物并增强骨质细胞分化.
- 在体内,OSU-T315促进了骨再生.
结论:
- 随着年龄的增长,HDPSC功能下降,影响再生能力.
- ILK/AKT/mTOR/STAT1信号通路是HDPSC衰老的一个关键调节器.
- 针对这种途径,特别是通过ILK抑制,提供了一种有前途的治疗策略,用于使老年HDPSC复苏并改善骨再生.
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