Binding of insulin to its cell surface protein receptors causes subsequent tyrosine phosphorylation, resulting in phosphorylation of insulin receptor substrates on specific tyrosine residues and activation and recruitment of PI3 kinase and its downstream target Akt/PKB.
Multiple cell surface protein receptors triggered signal cascades converge on CREB leading to gene expression changes that are thought to be responsible for dendritic development and synapse formation [ 71- 74].
The tissue explant model is a better representation of the clinical situation because enzymatically digested chondrocytes in culture have possibly changed their cell surface protein receptors, lost their native conformation together with the extra cellular matrix and they are known to dedifferentiate in a monolayer culture.
These tracers do not only address cell surface proteins (receptors), but also the interaction of cells as well as cell migration, which have been linked to angiogenesis and metastasis.
A current focus of oncology research is identifying tumor-specific antigens, such as cell-surface protein receptors.
The contrasting architectures of HNV attachment glycoproteins and MV-H reflect the independent evolution of distinct mechanisms by which these two classes of glycoproteins have acquired the ability to bind cell-surface protein receptors [ 44].
Both extreme heat and capsaicin, the chemical that gives certain peppers and foods their fire, are thought to elicit pain by activating a cell surface protein, or receptor, called TRPV1 or VR1.
In the case of many viruses, resistance is related to the presence on the cell surface of protein receptors that bind to the virus, allowing it to gain entry into the cell and thus cause infection.
PDGF-A affects cell proliferation, survival, migration and differentiation by way of paracrine or autocrine interaction with the cell surface protein tyrosine kinase receptor PDGFR-α [1], [2], [3].
Neogenin is a cell surface protein modifying BMP receptor association with membrane lipid rafts and Neo1 KO mice have abnormal chondrocyte maturation and endochondral bone growth.
Additionally, severe beta cell impairment and loss can be triggered by viruses that use beta cell surface proteins as receptors, e.g. the cell adhesion protein coxsackie virus and adenovirus receptor (CXADR) or Toll-like receptors.
