在高血糖症中对H型血管内皮细胞再生的LOX-1调节
Haoyue Lei1, Wenhui Guo1, Youzhuo Pan1
1The First Clinical Medical College, Gansu University of Chinese Medicine, Lanzhou, 730000, China.
Acta diabetologica
|January 20, 2024
概括
糖尿病骨质疏松症涉及增加的LOX-1表达,这抑制了血管生成. 沉默LOX-1恢复血管生成并影响Notch/HIF-1α/VEGF通路,为糖尿病骨质疏松症提供潜在的治疗点.
科学领域:
- 内分泌学和骨代谢 骨质代谢
- 血管生物学和血管生成
- 疾病的分子机制.
背景情况:
- 糖尿病骨质疏松症 (DOP) 是一种常见的二次骨质疏松症,其不清楚的潜在机制将糖尿病与骨代谢联系起来.
- 莱克类氧化低密度脂蛋白受体-1 (LOX-1) 在血管损伤条件上升调节,包括糖尿病.
- 诺奇,HIF-1α和VEGF信号通路与血管新生和骨形成有关,这表明它们可能在DOP病变发生过程中发挥作用.
研究的目的:
- 在LOX-1沉默的背景下研究Notch,HIF-1α和VEGF的表达.
- 在高葡萄糖条件下阐明LOX-1在调节参与血管生成和骨代谢的下游分子中的作用.
主要方法:
- 隔离和培养大鼠骨中的H型血管内皮细胞 (THVECs).
- 构建和转染的lentiviral沉默载体 (LV-LOX-1) 以降低LOX-1表达的调节.
- 在各种实验组中使用PCR和Western Blot (WB) 技术对LOX-1,Notch,HIF-1α和VEGF基因和蛋白质水平进行定量分析.
主要成果:
- 高葡萄糖 (HG) 条件显著增加了LOX-1表达,导致血管生成的抑制.
- 沉默LOX-1逆转了高葡萄糖诱导的血管生成抑制作用.
- LOX-1表达水平影响了Notch,HIF-1α和VEGF的表达,Notch介导了HIF-1α和VEGF的激活.
结论:
- 在THVEC中激活LOX-1和同时抑制Notch/HIF-1α/VEGF通路是糖尿病骨质疏松症的关键因素.
- 这些发现提高了对DOP病原体的理解.
- 该研究确定了预防和治疗骨质疏松症的新疗法策略.
更多相关视频
08:34Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis
Published on: June 3, 2016
15.1K
10:46Retinal Cryo-sections, Whole-Mounts, and Hypotonic Isolated Vasculature Preparations for Immunohistochemical Visualization of Microvascular Pericytes
Published on: October 7, 2018
10.1K
相关概念视频
Regulation of Angiogenesis and Blood Supply
2.6K
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...
2.6K
Hormones Regulating Blood Glucose
3.4K
Insulin is released by beta cells of the pancreas when blood glucose levels are high. It facilitates glucose absorption and utilization in insulin-dependent cells with insulin receptors on their plasma membranes. Insulin promotes glucose uptake by increasing the number of glucose transport proteins in the cell membrane, allowing glucose to enter the cell. As a result, glucose utilization and ATP production are enhanced.
In addition to accelerating glucose uptake and utilization, insulin has...
In addition to accelerating glucose uptake and utilization, insulin has...
3.4K
