Rolle der CXCL12 Rezeptoren CXCR4 und CXCR7 in der Atherosklerose und vaskulären Zellhomöostase
Zusammenfassung der Projektergebnisse
This project has yielded several landmark findings. First of all, the general importance of CXCR4 in protecting against atherosclerosis was demonstrated in a mouse model and this could be related to controlling the homeostasis of neutrophil numbers and function. Next, the differential and cell-specific contributions of CXCR4 on vascular progenitor cells to arterial regeneration could be revealed. Whereas CXCR4 promotes recovery of resident endothelial cells and recruitment of early angiogenic outgrowth cells after arterial injury to limit neointima formation, CXCL12 can drive recruitment of smooth muscle progenitor cells to promote neointima formation as seen in transplant vasculopathy but also the stabilization of primary atherosclerosis. Finally, we have characterized protective effects of the alternative CXCL12 receptor CXCR7 in limiting lesion formation and hyperlipidemia for the first time and have identified a dual complementary pair of endothelial microRNAs for atheroprotection, with miR-126-5p sustaining the proliferative reserve of resident endothelial cells, and miR-126-3p when delivered by apoptotic microparticles inducing auto-regulatory CXCL12 expression to recruit angiogenic cells and thereby promote protective endothelial regeneration. The latter work has been cited about 450-times since 2010, representing a true breakthrough finding.
Projektbezogene Publikationen (Auswahl)
- Adult progenitor cells in vascular remodeling during atherosclerosis. Biol Chem. 2008;389:837-44
Hristov M, Zernecke A, Schober A, Weber C
(Siehe online unter https://doi.org/10.1515/BC.2008.093) - Protective role of Cxcr4/Cxcl12 unveils the importance of neutrophils in atherosclerosis. Circ. Res. 2008; 102:209-217
Zernecke A, Bot I, Djalali-Talab Y, Shagdarsuren E, Meiler S, Liehn EA, Schober A, Soehnlein O, Sperandio M, Tacke F, Biessen EA, Weber C
(Siehe online unter https://doi.org/10.1161/CIRCRESAHA.107.160697) - A functional heteromeric MIF receptor formed by CD74 and CXCR4. FEBS Letters 2009; 583:2749-57
Schwartz V, Lue H, Kraemer S, Krohn R, Ohl K, Korbiel J, Bucala R, Weber C, Bernhagen J
(Siehe online unter https://doi.org/10.1016/j.febslet.2009.07.058) - Delivery of microRNA-126 by apoptotic bodies induces CXCL12-dependent vascular protection. Science Signal. 2009; 2:ra81
Zernecke A, Bidzhekov K, Noels H, Shagdarsuren E, Gan L, Denecke B, Hristov M, Köppel T, Nazari Jahantigh M, Lutgens E, Wang S, Olson EN, Schober A, Weber C
(Siehe online unter https://doi.org/10.1126/scisignal.2000610) - Lysophosphatidic acid receptors LPA1 and LPA3 promote CXCL12-mediated smooth muscle progenitor cell recruitment in neointima formation. Circ Res. 2010;107:96-105
Subramanian P, Karshovska E, Reinhard P, Megens RT, Zhou Z, Akhtar S, Schumann U, Li X, van Zandvoort M, Ludin C, Weber C, Schober A
(Siehe online unter https://doi.org/10.1161/CIRCRESAHA.109.212647) - Platelet microparticles enhance the vasoregenerative potential of angiogenic early outgrowth cells after vascular injury. Circulation 2010;122:495-506
Mause SF, Ritzel E, Liehn EA, Hristov M, Bidzhekov K, Mueller-Newen G, Soehnlein O, Weber C
(Siehe online unter https://doi.org/10.1161/CIRCULATIONAHA.109.909473) - Atherosclerosis: current pathogenesis and therapeutic options. Nat. Med. 2011; 17:1410-1422
Weber C, Noels H
(Siehe online unter https://doi.org/10.1038/nm.2538) - CD34+CD140b+ cells and CXCL12 predict the severity of cardiac allograft vasculopathy. Eur. Heart J. 2011;32:476-84
Schober A, Hristov M, Forbrig R, Kofler S, Löhr B, Schumann U, Krötz F, Leibig M, König A, Kazcmerek I, Reichart B, Klauss V, Weber C, Sohn HY
(Siehe online unter https://doi.org/10.1093/eurheartj/ehq402) - Double-edged role of the CXCL12-CXCR4 axis in experimental myocardial infarction. J. Am. Coll. Cardiol. 2011; 58:2415-23
Liehn E, Tuchscheerer N, Kanzler I, Drechsler M, Fraemohs L, Schuh A, Koenen R, Zandler S, Soehnlein O, Hristov M, Grigorescu G, Urs A, Leabu M, Bucur I, Merx M, Zernecke A, Bernhagen J, Schober A, Weber C
(Siehe online unter https://doi.org/10.1016/j.jacc.2011.08.033) - Rhythmic modulation of the hematopoietic niche through neutrophil clearance. Cell. 2013; 153:1025–1035
Casanova-Acebes M, Pitaval C, Weiss LA, Nombela-Arrieta C, Chèvre R, A-González N, Kunisaki Y, Zhang D, van Rooijen N, Silberstein L, Weber C, Nagasawa T, Frenette PS, Castrillo A, Hidalgo A
(Siehe online unter https://doi.org/10.1016/j.cell.2013.04.040) - Activation of CXCR7 limits atherosclerosis and improves hyperlipidemia by increasing cholesterol uptake in adipose tissue. Circulation 2014;129:1244-53
Li X, Penfold M, Megens R, Koenen RZ, Thiemann A, Heyll K, Akhtar S, van Zandvoort M, Schall T, Weber C, Schober A
(Siehe online unter https://doi.org/10.1161/CIRCULATIONAHA.113.006840) - CXCR4 blockade induces atherosclerosis by affecting neutrophil function. J Mol Cell Cardiol. 2014;74:44-52
Bot I, Daissormont IT, Zernecke A, van Puijvelde GH, Kramp B, de Jager SC, Sluimer JC, Manca M, Hérias V, Westra MM, Bot M, van Santbrink PJ, van Berkel TJ, Su L, Skjelland M, Gullestad L, Kuiper J, Halvorsen B, Aukrust P, Koenen RR, Weber C, Biessen EA
(Siehe online unter https://doi.org/10.1016/j.yjmcc.2014.04.021) - Deficiency of endothelial Cxcr4 reduces reendothelialization and enhances neointimal hyperplasia after vascular injury in mice. Arterioscler. Thromb. Vasc. Biol. 2014; 34:1209-20
Noels H, Zhou B, Tilstam PV, Theelen W, Li X, Akhtar S, Simsekyilmaz S, Liehn EA, Schober A, Adams RH, Bernhagen J, Döring Y, Weber C
(Siehe online unter https://doi.org/10.1161/ATVBAHA.113.302878) - MicroRNA-126-5p promotes endothelial proliferation and limits atherosclerosis by suppressing Dlk1. Nat Med. 2014; 20:368-76
Schober A, Nazari-Jahantigh M, Wei Y, Bidzhekov K, Gremse F, Grommes J, Megens RT, Heyll K, Noels H, Hristov M, Wang S, Kiessling F, Olson EN, Weber C
(Siehe online unter https://doi.org/10.1038/nm.3487) - The chemokine receptor CXCR4 in cardiovascular disease. Front. Physiol. 2014;5:212
Döring Y, Pawig L, Weber C, Noels H
(Siehe online unter https://doi.org/10.3389/fphys.2014.00212)
