Cartilage Degradation
Cartilage Degradation - Related Videos
02:58
Regulated Protein Degradation
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2020
It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells. Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
02:11
Proteins: From Genes to Degradation
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2020
Within a biological system, the DNA encodes the RNA, and the nucleotide sequence in the RNA further defines the amino acid sequence in the protein. This is referred to as “The Central Dogma of Molecular Biology” - a term coined by Francis Crick. Central dogma is a firm principle in biology that defines the flow of genetic information within any life form. The two fundamental steps in central dogma are - transcription and translation. Transcription is the synthesis of RNA molecules by RNA...
02:27
Safranin-O Staining: A Method to Visualize the Structural Integrity and Cellularity of Cartilage
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2025
In this video, we demonstrate a staining procedure for cartilage using safranin-orange. This method helps visualize the cartilage and detect any damage.
12:37
3D Hydrogel Scaffolds for Articular Chondrocyte Culture and Cartilage Generation
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Cited by 38 •
2015
Cartilage repair represents an unmet medical challenge and cell-based approaches to engineer human articular cartilage are a promising solution. Here, we describe three-dimensional (3D) biomimetic hydrogels as an ideal tool for the expansion and maturation of human articular chondrocytes.
07:43
Assaying Proteasomal Degradation in a Cell-free System in Plants
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Cited by 26 •
2014
Targeted protein degradation represents a major regulatory mechanism for cell function. It occurs via a conserved ubiquitin-proteasome pathway, which attaches polyubiquitin chains to the target protein that then serve as molecular “tags” for the 26S proteasome. Here, we describe a simple and reliable cell-free assay for proteasomal degradation of proteins.
FAQs
Matrix-degrading enzymes act on different structural components of cartilage. Matrix metalloproteinases cleave collagen, whereas aggrecanases target aggrecan, so their activity can alter both the tissue’s reinforcing framework and its ability to support load. Tracking these enzyme-linked changes helps bioengineers connect molecular events with losses in matrix composition and mechanical performance when evaluating degeneration or repair strategies.
Cartilage deteriorates when matrix breakdown outpaces the tissue’s capacity for repair. Chondrocyte dysfunction can weaken this restorative side of the balance, while inflammatory signaling may intensify catabolic processes. This framework helps researchers interpret degradation as a changing interaction among cells, enzymes, and signals rather than as an isolated loss of structural material, guiding models of degenerative joint disorders.
Changes in matrix composition and mechanical properties provide complementary evidence of cartilage damage. Composition measurements indicate whether key extracellular components are being lost, while mechanical measurements show how that loss affects strength, elasticity, or load-bearing function. Examining both alongside chondrocyte behavior gives bioengineers a broader assessment of tissue performance than relying on a single molecular or cellular readout.
Researchers use engineered cartilage and tissue-on-chip systems to model degradation-related processes in controlled experimental settings. These platforms can be examined for changes in matrix composition, mechanical properties, and cell behavior, allowing investigators to evaluate disease mechanisms, biomaterials, and potential therapies. Their value lies in linking biological activity to measurable tissue-level outcomes relevant to cartilage repair.
These models can show whether a biomaterial or treatment influences matrix preservation, tissue mechanics, or chondrocyte behavior. Such outcomes help distinguish effects on the extracellular environment from effects on cells and provide evidence for how an intervention might support repair or regeneration. The resulting measurements guide refinement of bioengineering strategies relevant to degenerative joint disorders.
Studying cartilage degradation connects disease biology with the design of repair-oriented solutions. By reproducing matrix loss and monitoring functional consequences, bioengineers can use experimental systems to evaluate biomaterials and potential treatments while maintaining a focus on regeneration. This work is relevant to degenerative joint disorders because effective strategies must address both extracellular matrix integrity and the behavior of the cells that maintain it.