在类风湿性关节炎的炎症性骨损失中,骨质细胞激活的机制
Martina Rauner1, Aline Bozec2,3
1Department of Medicine 3 & Center for Healthy Aging, Technische Universität Dresden, Dresden, Saxony, Germany.
Nature reviews. Rheumatology
|November 13, 2025
概括
类风湿性关节炎通过影响骨质细胞而导致骨质损失. 了解骨质细胞调节对于开发这种自身免疫性疾病的新疗法至关重要.
科学领域:
- 免疫学 免疫学 免疫学
- 整形外科 整形外科 整形外科
- 细胞生物学 细胞生物学
背景情况:
- 类风湿性关节炎 (RA) 是一种普遍存在的自身免疫性疾病,影响全球人口的1%左右.
- 关节炎导致关节炎症,局部骨质侵蚀和全身性骨质损失,导致残疾和社会经济负担.
- 骨质细胞是关键的细胞,负责骨的吸收和随后的骨损失在RA.
研究的目的:
- 为提供骨质细胞调节在类风湿性关节炎的全面审查.
- 探索从系统路径到骨质细胞内在适应的调节机制.
- 讨论当前和新兴的疗法,以抵消RA炎症性骨损失.
主要方法:
- 本综述综合了有关骨质细胞生物学和骨质关节炎调节的当前知识.
- 它检查了系统因素,骨微环境相互作用 (骨干和免疫细胞),以及骨质细胞内在机制,包括代谢适应.
- 该审查还涵盖了针对骨质细胞功能和炎症性骨损失的治疗策略.
主要成果:
- 骨质细胞调节是复杂的,涉及系统通路,局部细胞交叉 (骨质细胞,免疫细胞) 和内在细胞过程.
- 了解这些调节网络对于解决类风湿性关节炎骨病理至关重要.
- 目前正在开发各种治疗方法来调节骨质细胞活动并减轻骨质损失.
结论:
- 彻底了解骨质细胞调节对于开发有效的治疗类风湿性关节炎相关的骨质损失至关重要.
- 准骨质细胞通路及其相互作用提供了有前途的治疗途径.
- 进一步研究骨质细胞生物学及其与免疫系统的相互作用对于改善患者的治疗结果至关重要.
相关概念视频
Osteoclasts in Bone Remodeling
3.9K
Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during...
3.9K
Bone Remodeling
40.2K
Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
40.2K
The JAK-STAT Signaling Pathway
11.9K
Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as SH2...
11.9K
T Cell Types and Functions
2.1K
When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
2.1K
Bone Disorders
5.0K
Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
5.0K
Hormones and Bone Tissue
3.6K
The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
3.6K


