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增长板:区域结构,可塑性,以及对线性增长的内分泌控制
Carlos Barba Ostria1, Shoshana Yakar2
1Escuela de Medicina, Colegio de Ciencias de la Salud, Universidad San Francisco de Quito, Quito, 170901, Ecuador.
概括
增长板对于骨延长和成年人身高至关重要,是动态干细胞的利基. 它的结构和功能由信号通路和激素调节,为生长障碍提供治疗点.
科学领域:
- 骨生物学 骨生物学
- 内分泌学 在内分泌学.
- 发展生物学 发展生物学
背景情况:
- 生长板 (生理) 是一种专门的软骨器官,对纵向骨生长和确定成年人身高至关重要.
- 它的区域结构 (休息,增殖,增,化) 整合了干细胞活动,淋巴细胞扩张,矩阵重塑和骨化.
- 了解生长板生理学是解决线性生长障碍的关键.
研究的目的:
- 审查生长板的结构组织.
- 为突出了解状细胞命运和骨干细胞的进步.
- 要总结内分泌调节的生长和体融合.
主要方法:
- 审查关于生长板结构,信号通路和内分泌调节的现有文献.
- 整合了来自血统追踪研究和遗传模型的发现.
- 分析骨功能障碍和内分泌疾病的临床数据.
主要成果:
- 增长板结构是由细胞外基质,硫化和膜信号 (Ihh-PTHrP,BMP,Wnt,FGF) 之间的相互作用引起的.
- 休息区的PTHrP+细胞是骨干细胞;高性冠状细胞表现出可塑性 (转差/脱差).
- 内分泌轴 (GH/IGF-1,甲状腺激素,性类固醇等) 的作用. 协调生长速度和体融合,并注意到物种差异.
结论:
- 增长板是一个动态的,受调节的干细胞利基,带有塑料原生细胞命运.
- 信号通路或内分泌轴中的分子干扰会破坏生长板生理.
- 这些见解将生长板重新定义为线性生长障碍治疗的可针对性利基.
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