Collagen Structures
Collagen Structures - Related Videos
07:25
Collagen Hydrogels
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2023
Collagen is another widely used biomaterial that has found popularity in commercial applications, such as photography. Collagen has more recently been used in tissue engineering applications, by creating hydrogels that provide structure to engineered tissue. This video introduces collagen as a biomaterial, demonstrates how it is harvested from porcine skin, and shows how the material is used to create a hydrogel for tissue engineering applications. Finally, several applications of the material...
01:13
Collagens are the Major Structural Proteins of ECM
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2023
Three main types of fibers are secreted by fibroblasts: collagen fibers, elastic fibers, and reticular fibers. Collagen fiber is made from fibrous protein subunits linked together to form a long, straight fiber. Collagen fibers, while flexible, have great tensile strength, resist stretching, and give ligaments and tendons their characteristic resilience and strength. These fibers hold connective tissues together, even during the body's movement. Connective tissue proper includes loose...
07:03
Imaging Denatured Collagen Strands In vivo and Ex vivo via Photo-triggered Hybridization of Caged Collagen Mimetic Peptides
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Cited by 18 •
2014
This procedure demonstrates in vivo near IR fluorescence imaging of collagen remodeling activities in mice as well as ex vivo staining of collagens in tissue sections using caged collagen mimetic peptides that can be photo-triggered to hybridize with denatured collagen strands.
07:54
In vitro Synthesis of Native, Fibrous Long Spacing and Segmental Long Spacing Collagen
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Cited by 16 •
2012
Simple and reproducible procedures are described for making three structurally distinct collagen assemblies from a common commercially available Type I collagen monomer. Native type, fibrous long spacing or segmental long spacing collagen can be constructed by varying the conditions to which the 300 nm long and 1.4 nm diameter monomer building block is exposed.
05:17
An Improved Method for the Preparation of Type I Collagen From Skin
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Cited by 23 •
2014
Traditional procedures for the isolation of soluble type 1 collagen (COL1) require about 10 days from start to finish because of lengthy buffer incubations and laborious resuspensions of fibrils. Here, we describe a means to purify COL1 from small dermal biopsies in less than 3 hr.
FAQs
The triple helix provides the molecular-level arrangement from which higher-order collagen organization develops. Its presence links individual polypeptide chains to the formation of molecules that can subsequently align and aggregate into fibrils and fibers. For bioengineers, this connection matters because molecular arrangement is an early structural variable when relating collagen architecture to the behavior of a material or engineered tissue.
Sequence, cross-linking, and surrounding conditions influence how collagen molecules organize beyond the individual molecule. These variables can alter alignment, aggregation, and the resulting architecture of fibrils and fibers. Studying them helps researchers connect molecular and environmental differences with changes in material performance, which is important when designing collagen-based systems with controlled properties.
The progression from molecules to fibrils and larger fibers gives researchers multiple structural levels to examine when interpreting tensile behavior. Changes in alignment, aggregation, or cross-linking can therefore be considered alongside molecular sequence and surrounding conditions. This hierarchical view supports efforts to reproduce collagen architectures rather than treating the protein as a uniform material.
They use knowledge of collagen architecture to guide the design of biomaterials, tissue scaffolds, and hydrogels whose mechanical and biological properties can be controlled. Rather than focusing only on the protein’s presence, this approach considers organization and structure as design features. The resulting systems can support research into engineered tissues and biomimetic medical devices.
The main targets are controlled mechanical and biological properties. Researchers can focus on collagen organization because architecture provides a way to relate structural features to material performance. In bioengineering, that relationship informs the development of scaffolds, hydrogels, and other systems intended to reproduce relevant aspects of connective-tissue organization for engineered-tissue studies.
Their study connects collagen architecture with cell adhesion and matrix remodeling, two biological contexts highlighted in bioengineering applications. That connection helps researchers develop regenerative therapies and disease models while also informing more biomimetic medical devices. The value lies in linking structural organization to both cellular interactions and the performance requirements of engineered tissues.