In turn, TGF-β stimulates fibroblasts to secrete extracellular matrix components that are necessary for an adequate scar to form.
We previously found that EGF encourages expansion of early committed chondrocytes but prevents the expression of link protein and aggrecan [ 2], two extracellular matrix components that are necessary for proper cartilage organization [ 3].
This process occurs with the concept of removing whole cellular contents, while preserving the extracellular matrix components and all the necessary features of native tissues.
Through qRT-PCR analysis, we found significantly increased expression of elastin, fibronectin, and collagen I, indicating the synthesis of necessary extracellular matrix components.
Our findings suggest that complex interactions of the matrix components with the epithelial cells are necessary to induce lumen formation, and that such phenomena are not restricted to normal epithelial cells.
The challenge the puzzle that needs a solution is to replicate the complexity of the native extracellular matrix (ECM) environment with the minimum number of components necessary to allow cells to rebuild and replicate a given tissue.
This dense structure of extracellular matrix components provides structural support for the capillary wall necessary to maintain local high blood pressure.
Three-dimensional invasion assays have also been developed to include this reagent, or similar matrix components, due to an increased appreciation that their presence is necessary for demonstration of normal epithelial cell behavior [ 22, 23].
Clusterin (CLU) is a chaperone protein of the uterine fluid, suspected to prevent the premature aggregation and precipitation of eggshell matrix components before and during their assembly into the rigid protein scaffold necessary for ordered mineralization [ 88].
In their study they show that CD24 interacts with c-scr, leading to stabilization of the kinase-active form of c-scr, which is necessary for sufficient activation of integrin adhesion to extracellular matrix components such as fibronectin.
