Everything about Chondrocyte totally explained
Chondrocytes (from
Greek chondros cartilage +
kytos cell) are the only cells found in
cartilage. They produce and maintain the cartilaginous matrix, which consists mainly of
collagen and
proteoglycans. Although
chondroblast is still commonly used to describe an immature chondrocyte, use of the term is discouraged, for it's technically inaccurate since the progenitor of chondrocytes (which are
mesenchymal stem cells) can also differentiate into
osteoblasts.
Differentiation
From least- to terminally-differentiated, the chondrocytic lineage is:
- Colony-forming unit-fibroblast (CFU-F)
- Mesenchymal stem cell / marrow stromal cell (MSC)
- Chondrocyte
- Hypertrophic chondrocyte
When referring to bone or cartilage,
mesenchymal stem cells (MSC) are commonly known as osteochondrogenic (or osteogenic, chondrogenic, osteoprogenitor, etc.) cells since a single MSC has shown the ability to differentiate into chondrocytes or
osteoblasts, depending on the medium. In vivo, differentiation of an MSC in a vascularized area (such as bone) yields an
osteoblast, whereas differentiation of an MSC in a non-vascularized area (such as cartilage) yields a chondrocyte. Chondrocytes undergo terminal differentiation when they become hypertrophic during endochondral
ossification. This last stage is characterized by major
phenotypic changes in the cell.
Further Information
Get more info on 'Chondrocyte'.
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