蛋白O-GlcNAcylation在骨重塑中的新兴作用:对骨质疏松症的新见解
Jinpeng Wang1, Site Xu1, Yuchuan Xue1
1Department of Orthopedics, First Hospital of China Medical University, Shenyang, China.
Acta physiologica (Oxford, England)
|July 16, 2025
概括
一种蛋白质修饰的O-GlcNAcylation在骨重塑中起着至关重要的作用. O-GlcNAcylation的失调与骨质疏松症有关,提供了潜在的治疗点.
科学领域:
- 生物化学 生化学
- 细胞生物学 细胞生物学
- 骨生物学 骨生物学 骨生物学
背景情况:
- 骨重塑涉及骨质母细胞和骨质母细胞;失衡导致骨质疏松症.
- O-GlcNAcylation是一种动态蛋白质修饰,对于骨重塑至关重要.
- 它在骨细胞中的特定作用尚未完全理解.
研究的目的:
- 为了审查O-GlcNAcylation过程.
- 评估其对骨质母细胞和骨质母细胞活动的影响.
- 为了将O-GlcNAcylation与骨质疏松症联系起来.
主要方法:
- 综合文献综述. 这是一个全面的文献综述.
- 关于骨细胞中O-GlcNAcylation的证据综合.
- 对O-GlcNAcylation与骨质疏松症相关性的分析.
主要成果:
- 对于骨质细胞和骨质细胞分化,O-GlcNAcylation的需要有所不同.
- 适度的O-GlcNAcylation支持骨质细胞;动态变化是骨质细胞的关键.
- 在骨质疏松症中发现O-GlcNAcylation的升高,这表明有病原性作用.
结论:
- O-GlcNAcylation的作用是特定于细胞类型和分化阶段的.
- 增加的O-GlcNAcylation通过破坏骨重塑导致骨质疏松症.
- 向O-GlcNAcylation可能提供新的骨质疏松症治疗方法.
相关概念视频
Osteoclasts in Bone Remodeling
3.2K
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...
3.2K
Role of Vitamins in Maintaining Bone Health
3.7K
The growth and maintenance of bone are regulated by a combination of nutritional factors, including vitamins, such as vitamin A, B12, C, D, and K.
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
3.7K
Bone Remodeling
38.5K
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.
38.5K
Bone Disorders
4.0K
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...
4.0K
Hormones and Bone Tissue
2.9K
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...
2.9K
Protein Glycosylation
7.3K
Glycosylation, the most common post-translational modification for proteins, serves diverse functions. Adding sugars to proteins makes the proteins more resistant to proteolytic digestion. Glycosylated proteins can act as markers and receptors to promote cell-cell adhesion. Additionally, they have many essential quality control functions in the cell, such as correct protein folding and facilitating transport of misfolded proteins to the cytosol, which can be degraded.
Glycosylation occurs in...
Glycosylation occurs in...
7.3K


