Extracellular stimuli elicit changes in gene expression in target cells by activating intracellular protein kinase cascades that phosphorylate transcription factors within the nucleus. One of the best characterized stimulus-induced transcription factors is cyclic AMP (cAMP) responsive element binding ...

Insulin and Insulin-like growth factor 1 (IGF-1) induce Hypoxia-inducible factor 1 alpha subunit (HIF1A) [1], [2] and HIF-induced Vascular endothelial growth factor (VEGF) expression [1], ...

Epidermal growth factor receptor (EGFR) belongs to the ERBB family of receptor tyrosine kinases that contains four closely related members EGFR and ERBB2-4. They couple the binding of the extracellular growth factor ligands to intracellular signaling pathways that regulate diverse ...

VEGFs belong to a family of homodimeric glycoproteins ...

Mitogen-activated protein kinase (MAPK) pathways regulate a variety of physiological processes, such as cell growth, differentiation, and apoptotic cell death. To date, three MAPK pathways have been characterized in detail. The extracellular regulated kinase (ERK) pathway is activated by a large ...

The family of Protein kinase C (PKC) contains 3 functional protein types, 'conventional' PKC-alpha, PKC-beta, and PKC-gamma that are activated by calcium and Diacylglycerol (DAG), 'novel' PKC-delta, PKC-epsilon, PKC-eta, and PKC-theta ...

Adenosine A2B receptor influences cell differentiation and proliferation. A2B receptors are G-protein-coupled receptors coupling to classical second messenger pathways, such as modulation of Cyclic Adenosine 3',5'-phosphate (cAMP) production or the Phospholipase ...

VEGF family of ligands and receptors is crucial for vascular development and neovascularization in physiological and pathological processes in both embryo and adult. VEGFR-2 is a high-affinity receptor for VEGF-A. Activated VEGFR-2 can activate p38 MAPK, PI3K reg class IA/ ...

The vascular endothelial growth factor (VEGF) family of ligands and receptors is crucial for vascular development and neovascularization in physiological and pathological processes in both embryo and adult [1]. VEGFs denote a family of homodimeric glycoproteins that currently ...

Prolactin is a polypeptide hormone secreted by the pituitary gland and to a lesser extent by numerous extrapituitary tissues. This hormone affects a great amount of physiological processes [1]. Numerous biological functions have been attributed to this hormone's ...