S100P与RAGE结合并激活ERK/NF-κB信号,以促进骨质细胞分化和活动
Seung-Hoon Lee1, Na Rae Park1, Eui Kyun Park2
1Department of Molecular Medicine, Cell and Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu, 41944, Republic of Korea.
Biochemical and biophysical research communications
|August 15, 2024
概括
在骨质细胞中,S100结合蛋白P (S100P) 与RAGE结合,激活ERK和NF-κB通路. 这促进了骨质细胞分化和骨再吸收,提供了对骨代谢的洞察力.
科学领域:
- 细胞生物学 细胞生物学
- 生物化学 生物化学
- 骨生物学 骨生物学 骨生物学
背景情况:
- S100结合蛋白P (S100P) 是一种在健康组织和瘤中发现的分泌蛋白.
- 巨核细胞分泌的S100P会影响骨质细胞的分化和功能.
- 骨质细胞中S100P的特定受体和信号通路尚未完全理解.
研究的目的:
- 在骨质细胞中识别S100P的受体.
- 阐明S100P在骨质细胞中激活的信号通路.
- 确定S100P-RAGE相互作用对骨质细胞分化和骨再吸收的影响.
主要方法:
- 同免疫沉以确认S100P-RAGE结合.
- 在S100P刺激的骨质细胞前体中分析ERK和NF-κB酸化.
- 评估骨质细胞分化和骨再吸收活性,有或没有RAGE对抗性 (RAP).
主要成果:
- 先进糖化终产品 (RAGE) 的受体在骨质细胞前体中表达,并与S100P结合.
- 刺激S100P会增加ERK和NF-κB的酸化,而RAP会阻止这种酸化.
- 通过RAP,S100P诱导的骨质细胞分化和骨再吸收显著减少.
结论:
- 在骨质细胞中,S100P与RAGE结合,从而启动下游信号传递.
- 通过S100P-RAGE相互作用激活ERK和NF-κB通路,驱动骨质细胞分化.
- 这种机制有助于过度的骨质再吸收,突出显示S100P-RAGE作为潜在的治疗点.
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