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康尼克素43在人体红细胞,骨质母细胞和软骨突发细胞中的调节:对炎症关节疾病的影响

Elena Della Morte¹, Chiara Giannasi^1,2, Alice Valenza¹

¹Laboratory of Biotechnological Applications, IRCCS Istituto Ortopedico Galeazzi, 20157 Milan, Italy.

International journal of molecular sciences

|August 10, 2024

概括

瘤坏死因子α (TNFα) 在骨细胞和软骨中显著降低Connexin 43 (Cx43),影响肌肉骨健康. 骨关节炎患者的突流体也降低了Cx43,这表明它在关节疾病中发挥了作用.

科学领域:

细胞生物学细胞生物学
生物化学生物化学
肌肉骨研究研究

背景情况:

连素43 (Cx43) 对肌肉骨的发育和功能至关重要,包括细胞通信和骨/软骨的形成.
像TNFα和IL-1β这样的炎症调解剂与骨关节炎 (OA) 病变发生有关.
了解OA中的Cx43调节对于开发治疗策略至关重要.

研究的目的:

为了研究通过炎症刺激 (TNFα,IL-1β) 对Cx43的调节,在初级红细胞和骨质母细胞中.
探索骨关节炎患者的突液对软骨细胞和突细胞Cx43表达的影响.
评估TNFα对软骨扩展体Cx43水平的影响.

主要方法:

原发性冠状细胞 (CH) 和骨质母细胞 (OB) 用TNFα和IL-1β进行治疗.
软骨扩展体和CH暴露于骨关节炎患者的突流体.
量化了Cx43和GJA1基因表达水平.
评估了蛋白质酶参与.

主要成果:

在CH (-73%) 和OB (-32%) 和软骨扩展体中,TNFα显著降低了Cx43的调节.
IL-1β对Cx43水平有不确定的影响.
突流体在CH和软骨扩展物中减半了Cx43表达.
由TNFα诱导的Cx43减少涉及OB中的蛋白质酶活性,类似于CH.

结论:

在关键的肌肉骨细胞和组织中,TNFα显著下调Cx43的表达.
骨关节炎的突液有助于Cx43的减少,突出其在疾病病理学中的作用.
这些发现提供了关于炎症性关节疾病中Cx43调节的见解,以及其作为治疗点的潜力.

关键词:

连接器 43 连接器 43 一个IL-1ββ.这就是TNFα.软骨的扩展剂软骨的扩展剂冠状腺细胞 (chondrocytes) 是一种体内细胞.骨关节炎是一种关节炎.骨质母细胞 (osteoblasts) 是一个骨质细胞.突液是指突液中的液体.

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