素-整蛋白相互作用调节hPDLSCs的强力诱导的TGF-β1和α-SMA表达
Daneeya Na Nan1, Nuttha Klincumhom1,2, Vorapat Trachoo3
1Center of Excellence in Regenerative Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.
Oral diseases
|July 19, 2023
概括
牙周蛋白 (PN) 对于牙周带 (PDL) 在强力下重塑至关重要. PN-整蛋白信号传递,特别是与αVβ5一起,驱动TGF-β1和α-SMA表达,维持PDL平衡.
科学领域:
- 生物材料科学 生物材料科学
- 细胞生物学 细胞生物学
- 组织工程是组织工程.
背景情况:
- 牙周蛋白 (PN) 是牙周带 (PDL) 中的一个关键的母细胞蛋白.
- PN影响PDL和骨重塑,特别是在机械应力下.
- 了解PN在机械传导中的作用对于PDL健康至关重要.
研究的目的:
- 研究PN-整合素信号传导在TGF-β1和α-SMA的强力诱导表达中的作用.
- 检查PN对人类PDL干细胞 (hPDLSC) 在机械负荷下行为的影响.
- 阐明涉及PN介导机械传导的信号通路.
主要方法:
- 人类PDL干细胞 (hPDLSCs) 经历了间歇性压力 (ICF).
- PN,TGF-β1和α-SMA表达通过qPCR,免疫光学和西方斑点进行分析.
- 细胞迁移被评估使用划痕试验,有和没有PN表面涂层.
- 为了评估其在信号传递中的作用,进行了整合素αVβ5的敲除.
主要成果:
- ICF刺激增加了PN,TGF-β1和α-SMA的表达,以及SMAD2/3的酸化.
- 在强力刺激时,POSTN (PN基因) 敲击降低了TGF-β1和pSMAD2/3水平.
- PN敲击损害了hPDLSC的迁移,它被PN涂层表面所拯救.
- αVβ5整蛋白倒置显著减弱了强力诱导的TGF-β1表达.
结论:
- PN-αVβ5相互作用对于ICF诱导的TGF-β1信号传递和α-SMA表达至关重要.
- PN在维护PDL组织完整性和平衡中发挥着至关重要的作用.
- 这些发现凸显了PN在周期性的机械生物学中的重要性.
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