连续和释放的压力对骨质细胞形成invitro的影响
Boontida Changkhaokham1, Sumit Suamphan1, Suwanna Jitpukdeebodintra2
1School of Dentistry, Maefahluang University, Chiangrai, 57100, Thailand.
Journal of oral biology and craniofacial research
|February 21, 2024
概括
机械压缩刺激RAW 264.7细胞中的骨质细胞形成,影响骨重塑. 在4天后释放压缩会增加骨质细胞生成和基因表达,而不会影响细胞活力.
科学领域:
- 生物医学工程 生物医学工程
- 细胞生物学 细胞生物学
- 矯正牙科 矯正牙科是一種矯正牙科.
背景情况:
- 压力力在正牙牙移动过程中会对膜骨产生代谢性影响.
- 在机械压力下了解骨重塑的细胞机制对于正牙治疗至关重要.
- RAW 264.7 细胞,一种类似于小鼠骨质结晶的细胞系,作为研究骨质结晶发生的模型.
研究的目的:
- 在机械压缩下量化RAW 264.7细胞的融合到多核骨质细胞.
- 为了研究不同大小和持续时间的压力对骨质细胞形成的影响.
- 评估释放机械压缩对骨质细胞形成和基因表达的影响.
主要方法:
- RAW 264.7 细胞被施加压力 (0.3,0.6 或 0.9 g/cm2) 或没有压力4天.
- 诱导了骨质细胞生成,并量化了TRAP阳性多核细胞.
- 细胞在0-4天后从0.6g/cm2压缩中释放,以评估细胞活力,骨质细胞形成和基因表达 (DCSTAMP,CTSK).
主要成果:
- 压力为0.6和0.9g/cm2的压力显著增加了TRAP阳性多核细胞 (P<0.05).
- 在4天后从连续机械压缩中释放显著增加骨质细胞数量和DCSTAMP/CTSKmRNA表达 (P <0.05).
- 细胞活力不受压缩释放的影响.
结论:
- 持续的机械压缩会在RAW 264.7细胞中诱导骨质细胞形成.
- 增强DCSTAMP和CTSK的表达与压缩诱导的骨质结晶发生有关.
- 这项研究为与正义牙牙运动相关的骨重塑机制提供了新的见解.
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