ANGPTL4

This gene is induced under hypoxic (low oxygen) condition in various cell types and is the target of peroxisome proliferator-activated receptors.

This gene is induced under hypoxic (low oxygen) condition in various cell types and is the target of peroxisome proliferator-activated receptors.

[14] ANGPTL4 disrupts endothelial cell junctions by directly interacting with integrin, VE-cadherin and claudin-5 in a sequential manner to facilitate metastasis.

[15] ANGPTL4, specifically the C-terminal fragment (cANGPTL4), is a key player that coordinates an increase in cellular energy flux crucial for epithelial-mesenchymal transition (EMT) via an ANGPTL4:YWHAG (14-3-3γ) signaling axis.

A direct consequence is that ANGPTL4 secures ample cellular energy to fuel multiple ABC transporters to confer EMT-mediated chemoresistance.

[25] ANGPTL4 is also a potent angiogenic factor whose expression is up-regulated in hypoxic retinal Müller cells in vitro and the ischemic retina in vivo.

[27] However, evidence also suggests that ANGPTL4 functions as a conventional, non-competitive inhibitor that binds to LPL to prevent the hydrolysis of substrate as part of reversible mechanism.

In other tissues such as heart, production of ANGPTL4 is stimulated by fatty acids and may serve to protect cells against excess fat uptake.

The treatment of infected mice with neutralizing anti-ANGPTL4 antibodies significantly accelerated pulmonary recovery and improved lung tissue integrity.

Picture depicts role of ANGPTL4 as endogenous inhibitor of lipoprotein lipase and its regulation by fatty acids via Peroxisome Proliferator Activated Receptors