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Platelet-derived CXCL12 (SDF-1α): basic mechanisms and clinical implications.
1Medizinische Klinik III, Kardiologie und Kreislauferkrankungen, Eberhard Karls Universität, Tübingen, Germany.
Journal of Thrombosis and Haemostasis : JTH
|September 13, 2013
Summary
Platelets release CXCL12 (stromal cell-derived factor-1α), crucial for tissue repair and cardiovascular health. Elevated platelet CXCL12 in heart attack patients indicates better outcomes and aids progenitor cell recruitment.
Area of Science:
- Cardiovascular Biology
- Hematology
- Regenerative Medicine
Background:
- Platelets are a primary source of CXCL12 (stromal cell-derived factor-1α, SDF-1α), storing it in α-granules.
- Platelet activation increases CXCL12 release and surface expression, influencing cellular functions.
- CXCL12 and its receptor CXCR4 play roles in megakaryopoiesis and platelet function.
Purpose of the Study:
- To review the multifaceted role of platelet-derived CXCL12 in cardiovascular biology.
- To explore the diagnostic and therapeutic potential of platelet-derived CXCL12.
- To summarize findings on CXCL12's impact on progenitor cell recruitment and tissue repair.
Main Methods:
- Review of existing literature on platelet biology and CXCL12.
- Analysis of studies investigating CXCL12's interaction with CXCR4.
- Examination of in vitro and in vivo data on progenitor cell mobilization and tissue repair.
Main Results:
- Platelet-derived CXCL12 modulates paracrine signaling, affecting nucleated cell proliferation, differentiation, and migration.
- CXCL12 enhances progenitor cell recruitment to injury sites, promoting repair.
- Elevated platelet CXCL12 in acute myocardial infarction correlates with progenitor cell numbers, preserved cardiac function, and improved outcomes.
Conclusions:
- Platelet-derived CXCL12 is a key mediator in cardiovascular repair and regeneration.
- CXCL12 levels on platelets serve as a prognostic biomarker in cardiovascular disease.
- Targeting the CXCL12-CXCR4 axis holds therapeutic promise for cardiovascular conditions.
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