干细胞衍生因子-1调节了牙提取后血管内皮生长因子和骨质蛋白的表达
Jingjing Kong1, Lei Li2, Fei Gao3
1Department of Prosthodontics, Jinan Stomatological Hospital, Jinan, China.
Journal of periodontology
|July 8, 2025
概括
在大鼠牙拔牙后四天,流体细胞衍生因子-1 (SDF-1) 的表达达到峰值. 阻止SDF-1信号传递会降低骨质素 (OPN) 和血管内皮生长因子 (VEGF) 的表达,这表明SDF-1调节组织修复.
科学领域:
- 在口腔外科手术中.
- 再生医学是一种再生医学.
- 分子生物学分子生物学
背景情况:
- 拔牙会导致口腔组织缺陷,影响牙的修复和植入成功.
- 了解伤口愈合机制对于改善患者治疗结果至关重要.
- 干细胞衍生因子-1 (SDF-1) 参与组织修复过程.
研究的目的:
- 为了研究SDF-1表达力学后牙拔除在老鼠.
- 确定SDF-1对骨质疏松素 (OPN) 和血管内皮生长因子 (VEGF) 表达的调节作用.
- 为了阐明SDF-1的参与牙提取插座愈合.
主要方法:
- 在老鼠下毛骨中提取摩拉,并对提取口进行基因病理学分析.
- 在多个时间点 (0-14天) 量化SDF-1蛋白和mRNA.
- 使用AMD3100对SDF-1/CXC化学因子受体4 (CXCR4) 途径进行药理阻塞,以评估对OPN和VEGF的下游影响.
主要成果:
- 组织学分析显示,在14天内,从血凝块到成熟的骨头重塑,口逐渐愈合.
- 提取后SDF-1表达增加,在第4天达到峰值,然后下降到基线.
- AMD3100治疗显著降低了OPN和VEGF的蛋白质和mRNA水平.
结论:
- 在拔牙后,SDF-1表达遵循双相模式,最初增加,然后减少.
- 在插座愈合过程中,SDF-1信号通路似乎调节了OPN和VEGF的表达.
- SDF-1可能在协调血管生成 (VEGF) 和骨成熟 (OPN) 中发挥关键作用,以有效修复组织.
相关概念视频
Regulation of Angiogenesis and Blood Supply
2.7K
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
2.7K
Regulation of Hematopoietic Stem Cells
3.3K
All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
3.3K
Mechanism of Angiogenesis
5.9K
Blood vessel formation starts early during embryonic development, around day 7. In the extraembryonic yolk sac, mesodermal precursor cells called hemangioblast proliferate and differentiate into angioblast. Angioblasts express vascular endothelial growth factor receptor 2 or VEGFR2, which binds VEGF-A, a proangiogenic factor, guiding blood vessel formation. VEGF signaling promotes angioblasts to form a blood island in the developing embryo. Angioblasts further differentiate, giving rise to...
5.9K
Role of Hematopoietic Growth Factors
1.7K
Hematopoietic growth factors are molecules that regulate the differentiation rate of hematopoietic stem cells (HSCs). Erythropoietin (EPO), primarily produced by the kidneys, plays a crucial role in erythrocyte production. When oxygen levels in the blood are low, EPO is released into the bloodstream, reaching the bone marrow, where it stimulates HSCs to differentiate and mature into erythrocytes, which are vital for oxygen transport.
Thrombopoietin (TPO), mainly released by the liver,...
Thrombopoietin (TPO), mainly released by the liver,...
1.7K
TGF - β Signaling Pathway
7.7K
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...
7.7K


