相关实验视频
Updated: Sep 16, 2025

07:34
Preclinical Model of Hind Limb Ischemia in Diabetic Rabbits
Published on: June 2, 2019
9.9K
结合 angiogenic 和 hypertrophic 基因疗法可以增强骨肌肉的生长
Aino Männistö1,2, Kialiina Tonttila3, Alfredo Ortega-Alonso3,4
1Wihuri Research Institute, Helsinki, Finland.
American journal of physiology. Cell physiology
|July 7, 2025
概括
结合肌静素 (Pro-MSTN) 和血管内皮生长因子B (VEGF-B) 基因疗法,增强了骨肌肉的生长和血管化. 这种综合方法改善了身体组成和肌肉功能,即使是在糖尿病模型中.
科学领域:
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
- 身体生理学 身体生理学
背景情况:
- 骨肌肉缩导致肌肉质量和力量的损失.
- 目前针对肌肉生长的治疗方法可能会对血管和新陈代谢产生不必要的副作用.
- 血管新生和肌肉缩的联合诱导可能为肌肉生长提供一种更生理的方法.
研究的目的:
- 为了调查与肌静素 (Pro-MSTN) 和血管内皮生长因子B (VEGF-B) 的联合基因疗法是否可以促进生理肌肉生长和改善功能.
- 评估Pro-MSTN和VEGF-B基因治疗单独或组合对肌肉血管化,肌肉缩和整体肌肉功能的影响.
- 通过单细胞RNA测序,探索基因疗法结合效应背后的细胞机制.
主要方法:
- 使用了Pro-MSTN和VEGF-B的腺相关病毒载体 (AAV) 基因传递.
- 在健康和糖尿病小鼠模型中,通过肌内和全身途径进行治疗.
- 单细胞RNA测序用于分析健康小鼠的细胞反应和细胞间通信.
主要成果:
- 肌内VEGF-B在组合疗法中挽救了Pro-MSTN诱导的毛细血管稀疏并增强了肌肉生长.
- 系统性组合治疗改善了健康小鼠的身体组成,增加了糖尿病小鼠的肌肉质量和握力.
- 单细胞RNA测序揭示了内皮细胞和细胞周细胞的显著反应,增强了细胞间通信.
结论:
- 结合Pro-MSTN和VEGF-B的基因传递表明对骨肌肉生长和身体组成有有益影响.
- 这种组合疗法有效地抵消与Pro-MSTN治疗相关的血管缺陷,并改善肌肉功能.
- 这项研究解读了特定细胞类型,特别是内皮细胞和细胞周细胞的作用,以及它们在调解骨肌肉生长中的交叉声.
更多相关视频
09:01Programming Stem Cells for Therapeutic Angiogenesis Using Biodegradable Polymeric Nanoparticles
Published on: September 27, 2013
11.2K
09:34Visualizing Angiogenesis by Multiphoton Microscopy In Vivo in Genetically Modified 3D-PLGA/nHAp Scaffold for Calvarial Critical Bone Defect Repair
Published on: September 7, 2017
9.4K
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
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