Denatured Collagen Imaging
Denatured Collagen Imaging - Related Videos
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.
01:28
Protein Denaturation
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2023
The function of proteins depends on their native three-dimensional structure, which is dictated by the amino acid sequence of the specific protein. Folding of the polypeptide chain takes place under specific conditions that energetically favor the folded conformation. In contrast, protein denaturation occurs spontaneously under unfavorable conditions that disrupt the integrity of the folded conformation. Thus, the chemical and physical environment of a protein, such as significant changes in pH...
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...
10:52
Denaturing Gradient Gel Electrophoresis (DGGE)
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Cited by 10 •
2007
08:44
Denaturing Urea Polyacrylamide Gel Electrophoresis (Urea PAGE)
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Cited by 104 •
2009
Denaturing urea polyacrylamide gel electrophoresis is used to separate single-stranded DNA or RNA up to a limit of 500 nucleotides. Urea in combination with heat denatures samples and unstructured single strands migrate within the gel matrix according to their molecular weight.
FAQs
The key distinction comes from selective molecular recognition: a probe binds unfolded collagen chains more readily than collagen that retains its native organization, and fluorescent labeling makes that binding visible by microscopy. This contrast lets investigators map damaged regions against intact fibrils, converting structural disruption into a spatially resolved imaging signal for matrix analysis.
Sequence-specific recognition provides selectivity, while fluorescent labeling supplies the detectable signal. Using both features helps separate unfolded collagen chains from intact fibrils during microscopy rather than treating all collagen as equivalent. This is important when the goal is to localize matrix damage or remodeling within a sample and relate that distribution to engineered tissue performance.
Mechanical loading, chemical exposure, and cell activity represent distinct sources of matrix change that can be examined with this approach. Comparing denatured-collagen signals under these conditions helps bioengineers assess how stress or remodeling affects collagen organization. The resulting evidence can guide evaluation of scaffold stability and tissue development without relying only on bulk observations.
Spatial resolution matters because collagen disruption may occur within particular regions of a scaffold or tissue rather than uniformly. By showing where denatured areas occur relative to intact fibrils, microscopy supports analysis of localized matrix damage and remodeling. That information is especially useful for connecting structural changes with the behavior and durability of engineered materials.
An analysis needs a probe that recognizes unfolded collagen chains, a fluorescent readout when labeling is used, and microscopy to visualize the resulting signal. Investigators interpret the labeled regions in relation to intact fibrils, focusing on the location of denatured collagen. This workflow produces spatial evidence of matrix damage or remodeling for further bioengineering analysis.
Bioengineers can use the analysis to examine scaffold stability, tissue degradation, and cell-mediated matrix remodeling. It is also relevant when engineered materials experience mechanical or chemical stress, because the imaging signal helps reveal associated collagen disruption. These applications make the method useful for comparing scaffold behavior and identifying structural changes that may affect engineered tissue development.
Measurements provide spatial information about where collagen damage and remodeling occur within engineered tissues or scaffolds. Bioengineers can use that evidence to evaluate how matrix structure changes during development, degradation, or stress exposure. Linking these observations to scaffold stability helps inform the design of biomaterials intended to maintain performance while resisting structural failure.