From:  Emerging roles of haemostatic proteins as markers of disease progression and prognosis in breast cancer

 Some of the granule contents of platelets are involved in angiogenesis.

Granule type (platelets)ContentRole in angiogenesis
α-Granules (growth factors)1. Platelet-derived growth factorPromote
2. Vascular endothelial growth factorPromote
3. Basic fibroblast growth factorPromote
4. Epidermal growth factorPromote
5. Interleukin-1betaPromote
6. Stromal cell-derived factor-1 αPromote
7. AngiopoietinsSuppress
8. Platelet factor IVSuppress
9. EndostatinsSuppress
10. Thrombospondin-1Suppress
11. Sphingosine-1-phosphateSuppress
12. Tissue inhibitors of metalloproteinases (TIMPs; TIMP 1, 2, and 4)Suppress
13. Matrix metalloproteinases (MMPs) (MMP 1, 2, 3, 9, and 14)Suppress
14. Hepatocyte growth factorSuppress
15. Transforming growth factor-βSuppress
α-Granules (haemostaticfactors)1. Factor VPromote
2. Von Willebrand factorPromote
3. FibrinogenPromote
4. Factor XIIIPromote
5. PlasminogenPromote
6. Tissue factor pathway inhibitorSuppress
7. AntithrombinSuppress
8. Protein SSuppress
9. Plasminogen activator inhibitor-1Promote
Dense granules1. Adenosine triphosphatePromote
2. Adenosine diphosphatePromote
3. Guanosine 5’-triphosphatePromote
4. Guanosine diphosphatePromote