Hypertrophic Chondrocytes
Hypertrophic Chondrocytes - Related Videos
09:58
A 3D System for Culturing Human Articular Chondrocytes in Synovial Fluid
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Cited by 9 •
2012
A 3D system of culturing human articular chondrocytes in high levels of synovial fluid is described. Synovial fluid reflects the most natural microenvironment for articular cartilage, and can be easily obtained and stored. This system thus can be used for studying cartilage regeneration and for screening therapeutics for treating arthritis.
12:45
Mechanical Stimulation of Chondrocyte-agarose Hydrogels
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Cited by 29 •
2012
The biosynthesis of cartilaginous extracellular matrix by chondrocytes can be affected by application of mechanical stimuli. This method describes the technique of applying dynamic compressive strains to chondrocytes encapsulated in 3D constructs and the evaluation of induced changes in chondrocyte metabolism.
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.
07:51
Differentiating Chondrocytes from Peripheral Blood-derived Human Induced Pluripotent Stem Cells
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Cited by 6 •
2017
We present a protocol to generate a chondrogenic lineage from human peripheral blood (PB) via induced pluripotent stem cells (iPSCs) using an integration-free method, which includes embryoid body (EB) formation, fibroblastic cells expansion, and chondrogenic induction.
10:07
A 5-mC Dot Blot Assay Quantifying the DNA Methylation Level of Chondrocyte Dedifferentiation In Vitro
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Cited by 17 •
2017
We present a method to quantify DNA methylation based on the 5-methylcytosine (5-mC) dot blot. We determined the 5-mC levels during chondrocyte dedifferentiation. This simple technique could be used to quickly determine the chondrocyte phenotype in ACI treatment.
FAQs
The transition follows the cessation of chondrocyte proliferation. Cells then enlarge, alter the composition of their extracellular matrix, and begin expressing markers such as type X collagen. These coordinated changes prepare the cartilage environment for matrix mineralization and vascular invasion, linking cellular differentiation to the later replacement of cartilage by bone.
Type X collagen serves as a marker of the hypertrophic state described during growth plate development. Its expression helps distinguish cells that have progressed beyond proliferation and are undergoing matrix modification. In research, evaluating this marker can therefore help assess chondrocyte differentiation and the timing of events associated with cartilage mineralization.
These cells coordinate several changes that make cartilage suitable for replacement by bone. After proliferation stops, their enlargement and extracellular-matrix modification are followed by mineralization and vascular invasion. This sequence provides a cellular transition point within developing skeletal tissue, helping explain how bones form and lengthen through a cartilage intermediary.
A properly controlled hypertrophic transition supports normal skeletal development and repair, but abnormal hypertrophy can have harmful consequences. The overview links dysregulated activity with growth disorders and osteoarthritis, indicating that the same differentiation program that enables cartilage replacement may contribute to disease when its timing or extent is disturbed.
Researchers can examine the features associated with the transition, including increased cell volume, extracellular-matrix modification, and expression of type X collagen. They can also consider whether matrix mineralization and vascular invasion are occurring. Together, these observations provide complementary evidence about cellular state and its relationship to cartilage-to-bone replacement.
Fracture repair can involve replacement of cartilage with bone, making the hypertrophic transition relevant to studies of healing. Investigators examine how these cells and their matrix changes relate to mineralization and vascular invasion during repair. This context helps connect developmental bone formation with the biological processes that restore injured skeletal tissue.
Hypertrophic chondrocyte research provides information about the cellular events that precede cartilage replacement by bone. That knowledge is relevant to regenerative medicine because successful tissue repair may depend on understanding cell differentiation, matrix modification, mineralization, and vascular entry. It also helps researchers consider how controlled regeneration differs from disease-associated cartilage degeneration.