在炎症性hPDLSCs中,ATF3通过调节Nrf2/HO-1信号通路来调节ferroptosis来影响骨质分化
Hong Lu1, Yuemei Zheng2, Dan Wang2
1Department of Pediatric Dentistry, Stomatological Hospital of Guizhou Medical University, Guiyang 550004, China.
Tissue & cell
|July 11, 2024
概括
在人类牙周干细胞中抑制激活转录因子3 (ATF3) 减少了炎症和铁,通过调节Nrf2/HO-1信号来促进牙周炎模型的骨质分化.
科学领域:
- 细胞生物学 细胞生物学
- 干细胞研究 干细胞研究
- 牙周病的发病因子 牙周病的发病因子
背景情况:
- 已知激活转录因子3 (ATF3) 在骨质细胞分化中的作用.
- 它在牙周炎中对人类牙周干细胞 (hPDLSCs) 的特定影响仍然未被探索.
- 牙周炎涉及炎症,干细胞功能障碍和骨再生受损.
研究的目的:
- 使用hPDLSCs研究ATF3在脂聚糖 (LPS) 诱导的牙周炎模型中的作用.
- 确定ATF3调节对炎症,铁亡和骨质分化的影响.
- 探索底层的信号通路,特别是Nrf2/HO-1.
主要方法:
- 通过使用LPS挑战的hPDLSCs建立了体外牙周炎模型.
- 评估了细胞活力,ATF3表达 (RT-qPCR,西部斑点) 和炎症标志物 (ELISA).
- 量化了脂质过氧化,铁含量,铁亡标记物和骨质原生标记物 (ALP,阿利沙林红色,西部斑点).
- 研究Nrf2/HO-1信号通路的激活.
主要成果:
- 在hPDLSC中LPS上调ATF3表达.
- 降低ATF3显著降低了LPS诱导的炎症 (TNF-α,IL-6,IL-1β) 和铁 (减少ROS,铁,特定蛋白质;增加GPX4,SLC7A11).
- ATF3沉默增强了hPDLSC的骨质分化 (矿化,ALP,阿利沙林红色,OCN2,RUNX2,BMP2).
- ATF3的耗尽调节了Nrf2/HO-1信号;Nrf2的抑制部分逆转了ATF3的淘汰效应.
结论:
- 在LPS诱导的hPDLSCs中,ATF3沉默抑制炎症和铁.
- 通过Nrf2/HO-1通路,ATF3的淘汰促进了hPDLSCs的骨质分化.
- 向ATF3为牙周炎治疗提供了一个潜在的治疗策略.
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