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相关概念视频

Tissue Renewal without Stem Cells01:23

Tissue Renewal without Stem Cells

After cellular or tissue damage, the resident stem cells present in the human body can locally repair and regenerate the damaged tissue or organ. However, even though some tissues do not have stem cells, they can repair and regenerate with the help of pre-existing cells. For example, beta cells of the pancreas and hepatocytes of the liver can divide to renew and regenerate the tissue. Here, both cell division and cell death are well regulated by homeostasis.
However, failure of such a system...
Embryonic Connective Tissues01:20

Embryonic Connective Tissues

During early development, the embryo forms two types of connective tissues— the mesenchyme and mucoid connective tissue.
The mesenchyme is the first connective tissue that emerges in the developing embryo. It consists of loosely arranged multipotent mesenchymal cells and reticular fibers in the extracellular matrix. This loose arrangement allows easy migration of cells, which is essential for germ layer positioning, patterning, and organ morphogenesis during embryonic development. Mesenchyme is...
Bone Markings01:26

Bone Markings

Bones have various surface features that help form joints and attach to other soft tissues. Depending on the function, bone markings are categorized into articulating projections, processes for attachment, depressions, and openings.
Articulating Projections
Articulating projections are found where two bones meet to form a joint. These structures are usually found at the ends of bones. The largest articulation is a rounded projection called the head, supported by a narrow neck at the ends of...
Masonry Cavity Walls01:26

Masonry Cavity Walls

Cavity walls feature a hollow space between the outer and inner wythes, connected only by corrosion-resistant metal ties. When water seeps through the outer wythe, it descends within this cavity, intercepted by flashing and eventually exiting through weep holes. To enhance moisture resistance, the inner wythe's cavity side often receives damp-proofing, doubling as an air barrier. The cavity can also house insulation to mitigate heat transfer.
Maintaining a clean cavity during construction is...

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Engineering 3D Cellularized Collagen Gels for Vascular Tissue Regeneration
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内部空间:建筑空洞如何促进组织形成

Anna Puiggalí-Jou1, Isabel B Hui1, Carla Fernandez-Rico2

  • 1Tissue Engineering + Biofabrication Laboratory, Department of Health Sciences & Technology, ETH Zürich, Otto-Stern-Weg 7, Zürich, 8093, Switzerland.

Advanced materials (Deerfield Beach, Fla.)
|November 28, 2025
PubMed
概括
此摘要是机器生成的。

组织工程使用四种方法在水凝中创建空虚空间,模仿身体的自然结构. 这些技术可以开发仿生材料,以改善细胞和组织功能.

关键词:
通过3D打印打印3D打印.调整对齐的情况生物制造是生物制造的方法.飞行 飞行 飞行 飞行 飞行微凝是一种微凝.阶段分离的阶段分离.多孔性 多孔性牺牲的模板制作.组织组织组织组织组织组织组织组织组织组织组织组织组织组织组织组织组织组织组织组织虚空空间是一个空虚的空间.

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科学领域:

  • 生物材料科学 生物材料科学
  • 组织工程是组织工程.
  • 生物医学工程 生物医学工程

背景情况:

  • 生理空虚空间对于人体的运输,信号和生化活动至关重要.
  • 这些空间的收缩,在诸如动脉堵塞和纤维化等疾病中看到,强调了它们的重要性.
  • 模仿这些空虚空间对于推进组织工程 (TE) 应用至关重要.

研究的目的:

  • 通过多个长度尺度审查引入多孔性到水凝的关键策略.
  • 检查这些方法如何在纳米到微小尺度上设计生理环境.
  • 探索使用先进技术制造更大规模的空间.

主要方法:

  • 模板:嵌入和删除相 (气体,液体,固体) 来创建孔隙.
  • 微凝回火:在水凝矩阵内产生间歇性空隙.
  • 液-液相分离 (LLPS):形成模仿细胞外矩阵 (ECM) 的双相网络.
  • 3D打印 (挤出和基于光的):制造更大的光结构,如血管和呼吸道.
  • 光 (FLight) 技术: 创建异构的微结构空隙.

主要成果:

  • 前三种方法 (模板,微凝,LLPS) 设计纳米到微尺度空间,模仿组织和ECM.
  • 3D打印技术使得可以创建宏观的空虚空间,如光量.
  • 结合方法允许从纳米到厘米尺度的等级架构.
  • 飞光技术专门解决了异性质组织的需求.

结论:

  • 目前的方法为在水凝中创建仿生空虚空间提供了多种策略.
  • 这些技术的融合是产生层次结构的关键.
  • 这些工程虚空空间对于满足TE中细胞,组织和器官的生理需求至关重要.