Abstract
GAS6, the product of growth arrest specific (GAS) gene 6 is a ligand for the tyrosine protein kinase receptors Axl, Tyro3 and Mer whose signaling has been implicated in cell growth, survival, adhesion and migration. Although a secreted human vitamin Kdependent protein with close structural similarity with protein S, GAS6 does not exhibit anticoagulant properties but rather may be an important regulator of vascular homeostasis and platelet signaling. GAS6 signals via its receptor tyrosine kinases and appears to modulate platelet outside-in signaling via GP αIIbβIII, playing a key role in the perpetuation of platelet aggregates and clot retraction. GAS6 is also implicated in foam cell formation and neointimal proliferation in response to vascular injury. Thus GAS6 acts at key points in the pathophysiology of atherosclerosis and thrombosis; two processes implicated in most acute cardiovascular pathology. Inhibition of GAS6 or its receptors may provide antithrombotic activity in the absence of increased bleeding and thus presents an attractive drug target. GAS6 signaling may be modulated through direct antibody inhibition, blockade of its receptors or GAS6 trapping. However, ubiquitous expression of GAS6 and its receptors and the diverse biological effects of the pathway may make selective drug targeting difficult.
Keywords: receptor tyrosine kinases, platelet response amplifier, Glycoprotein, Early region 1A gene, vascular smooth muscle cells
Current Pharmaceutical Design
Title: Growth Arrest Specific Gene (GAS) 6 Modulates Platelet Thrombus Formation and Vascular Wall Homeostasis and Represents an Attractive Drug Target
Volume: 13 Issue: 26
Author(s): Andrew O. Maree, Hani Jneid, Igor F. Palacios, Kenneth Rosenfield, Calum A. MacRae and Desmond J. Fitzgerald
Affiliation:
Keywords: receptor tyrosine kinases, platelet response amplifier, Glycoprotein, Early region 1A gene, vascular smooth muscle cells
Abstract: GAS6, the product of growth arrest specific (GAS) gene 6 is a ligand for the tyrosine protein kinase receptors Axl, Tyro3 and Mer whose signaling has been implicated in cell growth, survival, adhesion and migration. Although a secreted human vitamin Kdependent protein with close structural similarity with protein S, GAS6 does not exhibit anticoagulant properties but rather may be an important regulator of vascular homeostasis and platelet signaling. GAS6 signals via its receptor tyrosine kinases and appears to modulate platelet outside-in signaling via GP αIIbβIII, playing a key role in the perpetuation of platelet aggregates and clot retraction. GAS6 is also implicated in foam cell formation and neointimal proliferation in response to vascular injury. Thus GAS6 acts at key points in the pathophysiology of atherosclerosis and thrombosis; two processes implicated in most acute cardiovascular pathology. Inhibition of GAS6 or its receptors may provide antithrombotic activity in the absence of increased bleeding and thus presents an attractive drug target. GAS6 signaling may be modulated through direct antibody inhibition, blockade of its receptors or GAS6 trapping. However, ubiquitous expression of GAS6 and its receptors and the diverse biological effects of the pathway may make selective drug targeting difficult.
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Cite this article as:
Maree O. Andrew, Jneid Hani, Palacios F. Igor, Rosenfield Kenneth, MacRae A. Calum and Fitzgerald J. Desmond, Growth Arrest Specific Gene (GAS) 6 Modulates Platelet Thrombus Formation and Vascular Wall Homeostasis and Represents an Attractive Drug Target, Current Pharmaceutical Design 2007; 13 (26) . https://dx.doi.org/10.2174/138161207781662948
DOI https://dx.doi.org/10.2174/138161207781662948 |
Print ISSN 1381-6128 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-4286 |
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