在实验室中对牙纸干细胞衰老的转录组分析
Jidong Xu1, Mingchang Hu1, Longfei Liu2
1School of Stomatology, Qingdao University, Qingdao, 266003, China.
Biomedical engineering online
|October 18, 2024
概括
长期培养人类牙髓干细胞 (hDPSCs) 会增加衰老,降低它们的分化潜力. 像CFH和WNT16这样的基因表达变化可能会驱动这种细胞衰老过程.
科学领域:
- *再生医学是一种再生医学.
- * * 干细胞生物学
- * 组织工程 * 组织工程
背景情况:
- *人类牙髓干细胞 (hDPSCs) 对于再生医学至关重要.
- * 自体hDPSCs正在研究用于组织修复应用.
- * 了解长期培养效应对于临床翻译至关重要.
研究的目的:
- * 评估扩展体外培养对hDPSCs的影响.
- * 评估通道上的多差分能力的变化.
- * 确定培养诱导衰老背后的分子机制.
主要方法:
- * hDPSCs被隔离和培养长达12代.
- * 流细胞计用于表面标记物分析 (CD34,CD45,CD73,CD90,CD105).
- * 扩散 (CCK-8),衰老 (β-Galactosidase),骨质生成 (Alizarin Red S) 和脂质生成 (Oil Red O) 的测定.
- *RNA测序 (RNA-seq) 来识别差异表达的基因.
主要成果:
- * 增加的通道数与更高的衰老和减少的增殖相关.
- * 随着扩展培养,骨质和脂质分化潜力下降.
- *稳定的CD34/CD45表达与减少的CD73/CD90/CD105.5形成对比.
- *RNA-seq确定了CFH,WNT16,HSD17B2,IDI1和COL5A3可能与衰老有关.
结论:
- * 长时间的hDPSCs体外扩张会诱导衰老.
- *衰老减少了繁殖和分化能力.
- * 特定的基因表达变化 (例如,CFH,WNT16) 可能是hDPSCs衰老的基础.
相关概念视频
Replicative Cell Senescence
Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds the telomeric...
Replicative Cell Senescence
Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds the telomeric...


