Platelet pannexin-1 channels modulate neutrophil activation and migration but not the progression of abdominal aortic aneurysm

被引:5
作者
Metz, Lisa Maria [1 ]
Feige, Tobias [1 ]
de Biasi, Larissa [1 ]
Ehrenberg, Agnes [1 ]
Mulorz, Joscha [1 ]
Toska, Laura Mara [1 ]
Reusswig, Friedrich [1 ]
Quast, Christine [2 ]
Gerdes, Norbert [2 ]
Kelm, Malte [2 ]
Schelzig, Hubert [1 ]
Elvers, Margitta [1 ]
机构
[1] Heinrich Heine Univ, Univ Hosp Duesseldorf, Dept Vasc and Endovasc Surg, Dusseldorf, Germany
[2] Heinrich Heine Univ, Univ Hosp Duesseldorf, Dept Cardiol Pulmonol & Vasc Med, Dusseldorf, Germany
关键词
platelets; pannexin-1; abdominal aortic aneurysm; inflammation; ECM remodeling; selectin; INFLAMMATION;
D O I
10.3389/fmolb.2023.1111108
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Abdominal aortic aneurysm (AAA) is a common disease and highly lethal if untreated. The progressive dilatation of the abdominal aorta is accompanied by degradation and remodeling of the vessel wall due to chronic inflammation. Pannexins represent anion-selective channels and play a crucial role in non-vesicular ATP release to amplify paracrine signaling in cells. Thus, pannexins are involved in many (patho-) physiological processes. Recently, Panx1 channels were identified to be significantly involved in abdominal aortic aneurysm formation through endothelial derived Panx1 regulated inflammation and aortic remodeling. In platelets, Panx1 becomes activated following activation of glycoprotein (GP) VI. Since platelets play a role in cardiovascular diseases including abdominal aortic aneurysm, we analyzed the contribution of platelet Panx1 in the progression of abdominal aortic aneurysm. We detected enhanced Panx1 plasma levels in abdominal aortic aneurysm patients. In experimental abdominal aortic aneurysm using the pancreatic porcine elastase (PPE) mouse model, a major contribution of platelet Panx1 channels in platelet activation, pro-coagulant activity of platelets and platelet-mediated inflammation has been detected. In detail, platelets are important for the migration of neutrophils into the aortic wall induced by direct cell interaction and by activation of endothelial cells. Decreased platelet activation and inflammation did not affect ECM remodeling or wall thickness in platelet-specific Panx1 knock-out mice following PPE surgery. Thus, aortic diameter expansion at different time points after elastase infusion of the aortic wall was unaltered in platelet-specific Panx1 deficient mice suggesting that the modulation of inflammation alone does not affect abdominal aortic aneurysm formation and progression. In conclusion, our data strongly supports the role of platelets in inflammatory responses in abdominal aortic aneurysm via Panx1 channels and adds important knowledge about the significance of platelets in abdominal aortic aneurysm pathology important for the establishment of an anti-platelet therapy for abdominal aortic aneurysm patients.
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页数:12
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