由于衰老引起的 B 细胞降低,可以通过 ROS 激活的 Fos/CCL3 信号通路增强骨髓巨细胞的骨质细胞生成
Ruiqing Sun1, Lan Luo1, Yang Chen1
1Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices& Beijing Key Laboratory of Digital Stomatology & NHC Key Laboratory of Digital Stomatology & NMPA Key Laboratory for Dental Materials, No.22, Zhongguancun South Avenue, Haidian District, Beijing, 100081, P.R. China.
在老年骨质疏松症中,氧化应激加速了B淋巴细胞的免疫衰老,减少了原始B细胞. 这激活了一条促进骨再吸收骨质细胞形成的途径,建议CCR1抗剂作为治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 骨生物学 骨生物学 骨生物学
- 老年学是一门学科.
背景情况:
- 老年骨质疏松症 (SOP) 由于老年人骨折风险增加而构成重大健康挑战.
- 免疫细胞变化在SOP病原发生中的确切作用在很大程度上仍未确定.
研究的目的:
- 阐明免疫细胞变化和老年骨质疏松症之间的机械联系.
- 在SOP中调查氧化应激对骨髓微环境内的免疫细胞的影响.
主要方法:
- 使用老化加速小鼠易受6 (SAMP6) 的小鼠作为SOP模型,与老化加速小鼠抗性1 (SAMR1) 对照组相比.
- 采用多组学 (单细胞RNA测序,转录学),流细胞计和组织学分析来研究骨髓免疫细胞.
- 在实验室中研究了细胞相互作用和骨质细胞生成,使用CCR1抗剂 (BX471) 来阻止特定的途径.
主要成果:
- SAMP6小鼠的骨质减少,反应性氧物种 (ROS) 增加.
- 在SAMP6小鼠中观察到B淋巴细胞,特别是亲B细胞的显著枯竭.
- 氧化应激诱导了亲B细胞中的Fos/Ccl3轴,通过CCL3-CCR1轴促进骨质细胞形成,这种效应被BX471.1抑制.
结论:
- 升高的ROS加速B淋巴细胞在SOP中的免疫衰老,减少原始B细胞.
- 这一过程激活了Fos/Jun通路,导致CCL3过度表达,并增强了巨细胞骨质形成.
- 用抗体准CCL3-CCR1轴为老年骨质疏松症提供了一个潜在的治疗策略.
相关概念视频
Notch Signaling Pathway
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
Hedgehog Signaling Pathway
Interactions Between Signaling Pathways
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Bone Marrow Sampling and Transplants
The transplant begins with high doses of chemotherapy and radiation treatment, which aim to destroy...
Non-Canonical Wnt Signaling Pathways
What is Cell Signaling?


