Binds to TEK/TIE2, modulating ANGPT1 signaling. Can induce tyrosine phosphorylation of TEK/TIE2. Promotes endothelial cell survival, migration and angiogenesis.
基因功能參考文獻:
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. PMID: 25977256
acute-phase protein A1AT is a physiological regulator of angptl4, another acute-phase protein. PMID: 24760148
Angptl4 is a glucocorticoid-responsive mediator of fasting-induced intracellular lipolysis and stimulates cAMP signaling in adipocytes PMID: 22267746
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. PMID: 21603628
Linkage to 20p13 including the ANGPT4 gene in families with mixed Alzheimer disease and vascular dementia is reported. PMID: 20596041
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. PMID: 20823154
the angiopoietin/Tie-2 system may participate in the angiogenic response to hypoxia in renal tissues and in tumor angiogenesis in renal carcinoma. PMID: 15198927
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. PMID: 15284220
angiopoietin-4 inhibits angiogenesis and reduces interstitial fluid pressure PMID: 16790085
Results describe the expression of angiopoietin-1, 2 and 4 and Tie-1 and 2 in gastrointestinal stromal tumors, leiomyomas and schwannomas. PMID: 17724803
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亞細胞定位:
Secreted.
組織特異性:
Highly expressed in the lung with much lower levels found in other tissues.