相关实验视频
Updated: Jul 10, 2025

Culturing and Measuring Fetal and Newborn Murine Long Bones
Published on: April 26, 2019
超硫化物通过促进生长板中的冠状细胞增殖来支持骨生长
Yuji Sasama1, Kentaro Yoshimura2, Marie Hoshino3
1Department of Biochemistry, Showa University School of Dentistry, Tokyo, Japan; Department of Oral and Maxillofacial Surgery, Showa University School of Dentistry, Tokyo, Japan.
由CARS2产生的超硫化物,通过促进生长板中的冠状细胞增殖,对骨生长至关重要. 这种硫的呼吸途径增强了骨的生长,特别是在使用西斯时的低氧条件下.
科学领域:
- 生物化学 生物化学
- 细胞生物学 细胞生物学
- 骨生物学 骨生物学
背景情况:
- 软骨细胞对于骨生长至关重要,其氧气供应有限.
- 线粒体硫呼吸利用超硫化物而不是氧气来产生能量.
- 超硫化物主要由cysteinyl tRNA合成酶-2 (CARS2) 合成.
研究的目的:
- 调查超硫化物在软骨细胞增殖和骨生长中的作用.
- 为了确定超硫化物对生长板冠状细胞的影响.
- 阐明CARS2在骨发育中介超硫化物生产中的机制.
主要方法:
- 在实验室中检查了NaHS (硫化物供体) 和囊对小鼠原发性冠状细胞增殖的影响.
- 在实验室中评估了这些化合物的对胚胎小鼠骨生长的影响.
- 利用RNA干扰来研究CARS2在冠状细胞增殖中的作用.
主要成果:
- NaHS (30μmol/L) 促进了骨的纵向生长,并扩大了生长板的繁殖区域.
- 囊 (0.5 mmol/L) 在正常和缺氧条件下增强了状细胞的增殖.
- 通过CARS2基因敲除,西斯的增殖效应被废除了,证实了CARS2产生的超硫化物的作用.
结论:
- 超硫化物对于骨生长至关重要,骨生长中介于生长板中的冠状细胞增殖.
- 由超硫化物驱动的硫呼吸是骨发育的关键能量途径.
- 来自CARS2的超硫化物对于促进软骨细胞的增殖和随后的骨生长至关重要.
更多相关视频
07:23Culture of Murine Embryonic Metatarsals: A Physiological Model of Endochondral Ossification
Published on: December 3, 2016
14:55Analysis of Minerals Produced by hFOB 1.19 and Saos-2 Cells Using Transmission Electron Microscopy with Energy Dispersive X-ray Microanalysis
Published on: June 24, 2018
相关概念视频
Bone Formation by Endochondral Ossification
Hormones and Bone Tissue
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
Growth of Cartilage and Bone Tissue
Bone Formation by Intramembranous Ossification
The process begins when mesenchymal cells in the embryonic skeleton gather together and differentiate into osteogenic cells, which then develop into ...
Bone Remodeling
Changes in the Appendicular Skeleton with Age
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...