一个综合的多omics分析揭示了osteokines参与全球监管
Wenquan Liang1, Tiantian Wei1, Le Hu1
1State Key Laboratory of Organ Failure Research, Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China.
Cell metabolism
|April 4, 2024
概括
研究人员确定了375个候选骨基因,这些蛋白质调节骨代谢,以及它们因衰老和机械力量的动态调节. 发现老化骨质母细胞分泌脂肪酸结合蛋白3,影响血管细胞.
科学领域:
- 骨生物学和新陈代谢
- 内分泌学和系统性平衡.
- 细胞衰老和器官间的通信
背景情况:
- 骨基因,骨分泌蛋白质,对于骨代谢和全身平衡至关重要.
- 骨基因的确切身份,它们的细胞起源和调节机制仍然不完全理解.
- 衰老和机械刺激显著影响骨健康和系统生理学.
研究的目的:
- 为了全面识别真正的骨基因及其在骨和骨外组织中的细胞来源.
- 通过衰老和机械加载/卸载来研究骨基因的调节.
- 阐明骨基因在器官间沟通中的作用,包括骨脑,骨肝和骨动脉轴.
主要方法:
- 综合分析RNA测序 (RNA-seq),单细胞RNA测序 (scRNA-seq) 和来自骨和骨外组织的蛋白质组数据.
- 分析骨质细胞条件介质,骨髓超 (BMS) 和血清.
- 在基底,老化和机械加载/卸载条件下评估骨蛋白表达和分泌.
主要成果:
- 鉴定了375个候选骨基因,这些骨基因在应对衰老和机械动力学方面发生了显著的变化.
- 在骨微环境中鉴定出骨基因的细胞来源的表征.
- 发现衰老的骨质母细胞分泌脂肪酸结合蛋白3,促进血管光滑肌细胞 (VSMC) 的衰老.
结论:
- 已经确定了一组新型的候选骨基因,扩大了已知的骨源信号分子谱.
- 已经建立了一个由衰老和机械力量影响的骨基因的动态调节网络.
- 这些发现为进一步研究骨质激素在健康和疾病中的系统性作用提供了宝贵的资源,特别是在与年龄相关的血管功能障碍中.
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