SGK1通过FoxO1/自引发TMJOA中的软骨降解
Hongyao Tang1, Chuan Ma2, Mengchen Xu1
1Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Shandong University, No. 44-1 Wenhua Road West, Jinan, 250012, Shandong, China.
Arthritis research & therapy
|December 31, 2025
概括
血清和葡萄糖皮质激素诱导激酶1 (SGK1) 通过抑制自而驱动关节骨关节炎 (TMJOA). 向SGK1可能通过恢复自和减少软骨退化为TMJOA提供新的治疗策略.
科学领域:
- 生物医学科学 生物医学科学
- 分子生物学分子生物学
- 整形外科 整形外科 整形外科
背景情况:
- 关节骨关节炎 (TMJOA) 是一种常见的炎症状况,机制尚不清楚.
- 血清和葡萄糖皮质激素诱导性激酶1 (SGK1) 与骨关节炎中的软骨退化有关.
研究的目的:
- 调查SGK1在TMJOA病变发生中的作用.
- 探索SGK1在调节自和外细胞矩阵降解中的机制,在小鼠状冠状细胞 (MCCs).
主要方法:
- 使用单边前部交叉咬伤 (UAC) 建立了一个TMJOA小鼠模型.
- 使用腺相关病毒 (AAV) 通过关节内注射生成了一个SGK1敲击模型.
- 分析了SGK1与叉头盒O1 (FoxO1) 的相互作用及其对MCC中自和细胞外基质 (ECM) 的影响.
主要成果:
- 在UAC诱导的TMJOA软骨中,SGK1表达升高.
- SGK1的淘汰减少了软骨的降解,增加了类合成体标志物.
- SGK1通过促进FoxO1酸化和核出口来抑制自.
- 抑制SGK1增强了自,减少了IL-1β诱导的ECM降解,自和FoxO1抑制剂可以逆转效应.
结论:
- 这项研究确定SGK1是TMJOA中的关键调节者.
- 研究结果表明,SGK1的机制涉及调节FoxO1介导的自和ECM降解.
- 这项研究为TMJOA治疗提供了新的治疗点.
更多相关视频
相关概念视频
01:16TGF - β Signaling Pathway
10.4K
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
10.4K
01:27Growth of Cartilage and Bone Tissue
4.0K
Chondrocytes form a temporary cartilaginous model by dividing and secreting a thick gel-like extracellular matrix. Once the chondrocytes undergo programmed cell death, osteoblasts enter the site of the cartilaginous model. The process of replacing the temporary cartilaginous model with bone in an ordered manner is called endochondral ossification. In endochondral ossification, not all of the cartilage is replaced by bone tissue. Some cartilage that performs a protective and supportive function...
4.0K
01:31Osteoclasts in Bone Remodeling
3.8K
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...
3.8K
02:58Regulated Protein Degradation
8.7K
It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells.
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
8.7K
02:58Regulated Protein Degradation
3.0K
3.0K
01:23Role of Matrix Metalloproteases in Degradation of ECM
3.2K
Matrix metalloproteases (MMPs) are enzymes involved in the hydrolysis of proteins and glycoproteins of the extracellular matrix. MMPs are essential for the migration and proliferation of cells through the dense matrix network, throughout embryonic development, and throughout morphogenesis. The first MMP activity discovered was a collagenase in a tadpole's tail undergoing metamorphosis. The active collagen deposition and modifications lead to the morphogenesis of tadpoles into the adult...
3.2K