雌激素和机械负荷对来自下冠状软骨培养细胞的影响
Jin Tsuchida1, Yuya Nakao2, Koken Sato1
1Division of Orthodontics and Dentofacial Orthopedics, Department of Oral Growth and Development, School of Dentistry, Health Sciences University of Hokkaido, 1757 Kanazawa, Ishikari-Tobetsu, Hokkaido, 061-0293, Japan.
Scientific reports
|July 2, 2025
概括
雌激素通过改变细胞外基质 (ECM) 水平来影响关节骨关节炎 (TMJ-OA). 这项研究揭示了雌激素.
科学领域:
- 生物化学 生物化学
- 细胞生物学 细胞生物学
- 骨关节炎研究 骨关节炎研究
背景情况:
- 关节骨关节炎 (TMJ-OA) 是一种退行性疾病.
- 机械负荷和荷尔蒙因素,如雌激素,影响TMJ-OA.
- 雌激素对关节软骨的影响的精确分子机制尚未完全理解.
研究的目的:
- 为了研究雌激素和机械负荷对下带状软骨 (MCC) 细胞的分子效应.
- 阐明雌激素在机械压力下的TMJ病理生理学中的作用.
- 确定关键的基因和途径参与雌激素调节TMJ的细胞外基质 (ECM).
主要方法:
- 培养的MCC细胞经过或没有17β-雌激醇治疗,被 subjected to mechanical loading.
- 定量逆转录PCR (qRT-PCR) 和西部涂抹用于基因和蛋白质表达分析.
- 进行了RNA测序和生物信息学分析 (差异基因表达,基因本体学,PPI网络).
主要成果:
- 仅仅机械负荷就降低了MCC细胞中ECM相关的基因表达.
- 雌激素与机械负荷相结合,显著提高了 I 型原蛋白 (COL1A1) 和 III 型原蛋白 (COL3A1) 的表达.
- 关键的ECM相关基因 (COL1A1,COL3A1,LAMC1,LAMB1) 和通路被确定为关键的调解者.
结论:
- 雌激素通过调节ECM成分,包括原蛋白和拉米因,在TMJ-OA中发挥重要作用.
- 这些发现提供了关于机械力和关节退化中的荷尔蒙因素之间的复杂相互作用的见解.
- 雌激素对ECM水平的影响表明,对管理TMJ-OA.有潜在的治疗点.
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