在TMJ发育过程中增强骨形态遗传蛋白信号,以时间点依赖的方式改变形态
Susannah C Midla1, Maiko Omi-Sugihara1,2, Madeline Cha1
1Department of Biologic and Materials Sciences & Prosthodontics, University of Michigan School of Dentistry, Ann Arbor, MI 48109-1078, USA.
International journal of molecular sciences
|February 26, 2025
概括
骨形态蛋白 (BMP) 信号影响关节 (TMJ) 发育,通过影响状细胞细胞死亡. 这种对关节软骨长度的影响在小鼠产后发育期间是特定于时间的.
科学领域:
- 面部的发育 面部的发展
- 内分泌体骨化发生在内分泌体内.
- 分子信号通道的分子信号通道.
背景情况:
- 关节 (TMJ) 具有独特的发育起源和功能维护.
- 骨形态蛋白 (BMP) 信号传递对内分泌骨骨化至关重要,但其在关节发育中的作用尚不清楚.
研究的目的:
- 调查增强的BMP信号在神经峰对产后TMJ发育的影响.
- 阐明BMP信号在状细胞细胞死亡和关节软骨形成中的作用.
主要方法:
- 在Wnt1 Cre;caBmpr1a小鼠中进行TMJ的基组形态分析.
- 在不同出生后的时间点 (P17,P28,P42) 评估下肌的软骨长度和细胞死亡.
主要成果:
- 在被增强的BMP信号发送的小鼠中,在断奶前观察到下带状软骨的缩短长度 (P17).
- 断奶后下带状软骨长度的恢复 (P28和P42).
- 在下冠状腺表面区域的冠状细胞细胞死亡的变化与软骨长度的变化相关.
结论:
- 在特定时间内,BMP信号会以特定时间的方式影响关节的发育.
- BMP信号影响状细胞的细胞死亡,从而影响TMJ产后发育.
- 头骨神经中的增强的BMP信号导致TMJ软骨生长的短暂变化.
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