先进的血小板溶解酸气凝:再生应用的生物材料
Fahd Tibourtine1, Thibault Canceill2, Andrea Marfoglia1,3
1CIRIMAT, Université Toulouse 3 Paul Sabatier, Toulouse INP, CNRS, Université de Toulouse, 118 Route de Narbonne, CEDEX 9, 31062 Toulouse, France.
Journal of functional biomaterials
|February 23, 2024
概括
研究人员从人类血小板溶解物 (HPL) 中开发出稳定干燥的气凝,用于组织工程. 这些多孔支架提供了增强的处理,持续的生长因子释放,并支持细胞生长,显示出再生医学应用的巨大希望.
科学领域:
- 生物材料科学 生物材料科学
- 再生医学是一种再生医学.
- 组织工程是组织工程.
背景情况:
- 人类血小板溶解物 (HPL) 富含生长因子,在再生医学中具有潜在的应用.
- 当前液体或凝形式的HPL在稳定性和处理方面存在局限性.
- 需要改进HPL配方,以实现有效的组织工程.
研究的目的:
- 从HPL水凝制成干燥,多孔的气凝.
- 使用一种环保的超临界CO2基塑造工艺.
- 为组织工程和再生医学创造一种稳定且易于管理的材料.
主要方法:
- 使用超临界CO2的HPL水凝被塑成气凝.
- 气凝结构的特征,机械性能和吸水能力.
- 在体外评估生长因子释放,细胞代谢活性,迁移,粘附和增殖.
主要成果:
- 气凝保持了3D结构,具有显著的机械强度和更好的可控性.
- 观察到高吸水能力 (120分钟) (87%的重量).
- 持续释放生长因子支持纤维细胞代谢活动,内皮细胞迁移和纤维细胞粘附/增殖.
结论:
- 开发的HPL气凝是稳定的,易于处理,并具有优良的吸水能力.
- 这些气凝作为有效的细胞培养矩阵和生长因子输送系统.
- 这些发现凸显了HPL气凝在各种组织再生策略和实际再生医学应用中的潜力.
相关概念视频
01:22Formation of the Platelet Plug
6.2K
The platelet phase, the second stage of hemostasis, commences around 15-20 seconds after an injury. It follows and overlaps with the vascular phase, during which blood vessels constrict to minimize blood loss.
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
6.2K
01:18Structure and Function of Platelets
1.2K
The cell fragments known as platelets are disc-shaped, with an average diameter of about 3 μm and a thickness of roughly 1 μm. They play a crucial role in the body's vascular clotting system, which also involves plasma proteins, blood cells, and blood vessel tissues.
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000...
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000...
1.2K