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Ang-4 also promoted survival of LECs. Thus, blocking Ang-4 may prune the draining lymphatic vasculature and decrease interstitial fluid pressure (IFP) by reducing vascular permeability.
acute-phase protein A1AT is a physiological regulator of angptl4, another acute-phase protein.
Angptl4 is a glucocorticoid-responsive mediator of fasting-induced intracellular lipolysis and stimulates cAMP signaling in adipocytes
In tumor cells, only Ang-4 expression has prognostic impact in NSCLC. In NSCLC tumor stroma, Ang-4 and Ang-2 are independently associated with survival.
Linkage to 20p13 including the ANGPT4 gene in families with mixed Alzheimer disease and vascular dementia is reported.
Results establish the novel effects of Ang-4 on tumor angiogenesis and GBM progression and suggest that this pro-GBM effect of Ang-4 is mediated by promoting tumor angiogenesis and activating Erk1/2 kinase in GBM cells.
the angiopoietin/Tie-2 system may participate in the angiogenic response to hypoxia in renal tissues and in tumor angiogenesis in renal carcinoma.
Recombinant Ang4 formed disulfide-linked dimers. Ang4 produces corneal angiogenesis extending from the limbus across the mouse cornea in vivo. Ang4 is an agonist of Tie2.
angiopoietin-4 inhibits angiogenesis and reduces interstitial fluid pressure
Results describe the expression of angiopoietin-1, 2 and 4 and Tie-1 and 2 in gastrointestinal stromal tumors, leiomyomas and schwannomas.
Angiopoietin-3 binds to the cell membrane via heparan sulfate proteoglycans
Recombinant Ang3 formed disulfide-linked dimers. Ang3 was more potent than Ang4 in phosphorylating Akt in primary cultured mouse lung microvascular endothelial cells. It is a Tie2 agonist & causes corneal angiogenesis.
Angiopoietins are proteins with important roles in vascular development and angiogenesis. All angiopoietins bind with similar affinity to an endothelial cell-specific tyrosine-protein kinase receptor. The mechanism by which they contribute to angiogenesis is thought to involve regulation of endothelial cell interactions with supporting perivascular cells. The protein encoded by this gene functions as an agonist and is an angiopoietin.
, dJ824F16.2 (angiopoietin 4)
, angiopoietin 3
, angiopoietin 4
, angiopoietin-like protein 4