通过AMPK信号通路,TSH抑制骨质细胞分化
Wenwen Zhang1, Yu Chen1, Yan Wang1
1Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education, Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, China; Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong 250021, China; Shandong Institute of Endocrine and Metabolic Diseases, Jinan, Shandong 250021, China; "Chuangxin China" Innovation Base of stem cell and Gene Therapy for endocrine Metabolic diseases, China; Shandong Engineering Laboratory of Prevention and Control for Endocrine and Metabolic Diseases, Jinan, Shandong 250021, China.
甲状腺刺激激素 (TSH) 通过激活AMPK通路来抑制骨质损失,从而防止骨质疏松症. 这一发现为治疗骨疾病提供了新的治疗点.
科学领域:
- 内分泌学 在内分泌学.
- 骨生物学 骨生物学 骨生物学
- 细胞信号传递 细胞信号传递
背景情况:
- 骨质疏松症 (OP) 与甲状腺功能障碍症有关,亚临床形式具有相同的风险.
- 甲状腺刺激激素受体 (TSHR) 在骨质细胞上的存在表明直接作用,但机制尚不清楚.
研究的目的:
- 研究TSH在调节骨质细胞功能和骨代谢中的直接作用.
- 阐明TSH影响骨质细胞分化的分子机制.
主要方法:
- 使用TSHR条件淘汰赛 (CKO) 小鼠来评估骨代谢.
- 使用RAW264.7细胞和转录组学 (RNA-seq) 的体外研究来识别信号通路.
主要成果:
- 在实验室中,TSH抑制了骨质细胞分化,向AMPK信号通路.
- 在TSHR CKO小鼠中,骨的生物力学受损,微观结构受损,骨质细胞数量增加.
- 在TSHR CKO小鼠中观察到骨再吸收标记的升高.
结论:
- 通过AMPK激活来抑制骨质细胞分化,TSH具有骨质保护作用.
- 这些发现为诊断和治疗骨质疏松症提供了洞察力.
- TSH类似物或AMPK激活剂可能为骨质疏松症提供新的治疗策略.
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