Wnts are a family of secreted molecules, which signal and stimulate surrounding cells.
For example, induction of Myc in a transgenic mouse lymphoma model stimulated surrounding macrophages to secrete TGFβ, which resulted in induction of cellular senescence [ 54].
BMP-2 stimulates surrounding tissues; however, more robust data is needed to demonstrate that BMP-2 augmentsmenthethe osteogenic potential of implanted MSCs cells.
Secreted ihh stimulates surrounding perichondrial osteoblasts to secrete Pthrp [ 27], which diffuses back to prehypertrophic chondrocytes, binds to its receptor Pth1r, and blocks further chondrocyte maturation.
BSG was discovered as a tumor surface molecule that stimulates surrounding fibroblasts to produce MMPs (Biswas et al., 1995); thus, MMP expression might be influenced by BSG during fracture repair.
We have demonstrated how a feed-forward, IL-18 based, IL-18 basedncing system forms an element of glioblastoma pathophysystemy whereby glioblastoma cells secrete extracellular matrix proteins, such as formsnectin and vitronelementand these profeins then stimulate surroundinglioblastomain microglia to secrete increased IL-18 [ 5].
74 However, when these cells metastasized to nonosseous organs, there was little to no expression of IL-6, m-CSF, RANKL, or DKK1, indicating that some cancer cells stimulate surrounding cells to release pro-osteoclastic factors only in the bone microenvironment.
As such, the ideal agent would be one that restores volume to the defect by stimulating the surrounding tissue to replace collagen for a long-lasting effect, as opposed to those that provide a short-term effect based on the volume of injected resorbable material.
The 21-story building – which is to have 244 residential units, a swimming pool and retail outlets — is a cornerstone of the arts center's efforts to stimulate the surrounding area as a vibrant urban space.
Under low oxygen, tumour cells secrete angiogenic growth factors that stimulate the surrounding vasculature to produce new capillary sprouts that migrate towards the tumour and the new vessels increase the supply of nutrients to the tissue, enabling the tumour to continue growing and to invade adjacent healthy tissue.
