Platelets and Complement Cross-Talk in Early Atherogenesis
Hugh Kim1,2,3, Edward M Conway1,4
1Centre for Blood Research, Life Sciences Institute, University of British Columbia, Vancouver, BC, Canada.
Insights
Platelets and complement system interactions promote early atherosclerosis development. This crosstalk contributes to inflammatory signaling, impacting atheroma formation and vascular inflammation.
Area of Science:
- Cardiovascular Research
- Immunology
- Vascular Biology
Background:
- Atherosclerosis is a major health concern, involving inflammation and plaque formation.
- Platelets are key in thrombosis but also contribute to early atheroma.
- The complement system, part of innate immunity, plays a role in vascular inflammation.
Purpose of the Study:
- To review the intricate relationship between platelets and the complement system.
- To explore how their interaction influences the initiation of atheroma formation.
Main Methods:
- Literature review and synthesis of existing research on platelet-complement interactions in atherosclerosis.
Main Results:
- Platelets actively engage with complement system components.
- This crosstalk has pro-inflammatory effects relevant to early atheroma development.
Conclusions:
- The interplay between platelets and the complement system is a critical factor in initiating atherosclerosis.
- Targeting this interaction may offer new therapeutic strategies for preventing atheroma formation.
Abstract:
Atherosclerosis remains a ubiquitous and serious threat to human health. The initial formation of the atherosclerotic lesion (atheroma) is driven by pro-inflammatory signaling involving monocytes and vascular endothelial cells; later stages of the disease involve rupture of well-established atherosclerotic plaques, thrombosis, and blood vessel occlusion. While the central role of platelets in thrombosis is undisputed, platelets exhibit pro-inflammatory activities, and contribute to early-stage atheroma formation. Platelets also engage components of the complement system, an essential element of innate immunity that contributes to vascular inflammation. Here we provide an overview of the complex interplay between platelets and the complement system, with a focus on how the crosstalk between them may impact on the initiation of atheroma formation.
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