The DOI matches its Crossref record; 44 of the 44 references it cites were found in a registry or an index.
Heterophilic interactions of platelet factor 4 and RANTES promote monocyte arrest on endothelium
Abstract
The chemokines platelet factor 4 (PF4) and RANTES (regulated on activation normal T cell expressed and secreted) are secreted by activated platelets and influence multiple cell types and biologic processes. For instance, PF4 inhibits progenitor cell proliferation and angiogenesis, while platelet-derived RANTES is involved in vascular recruitment of monocytes. However, little is known about functional interactions of PF4 and RANTES. Here we show that the presence of PF4 enhanced the arrest of RANTES-stimulated monocytes and monocytic cells on activated endothelial cells under flow conditions, while binding of PF4 to the monocyte surface was increased by RANTES. Both RANTES-triggered arrest and PF4 binding involved monocytic chondroitin sulfate. Ligand blots and surface plasmon resonance revealed a robust heterophilic interaction of PF4 with RANTES but not with RANTES variants defective in higher order oligomerization. The tetrameric mutant E26A bound to the monocyte surface without increasing PF4 binding, and monocyte arrest induced by E26A-RANTES was not enhanced by PF4. Stimulation of monocytes with supernatants of activated platelets triggered arrest involving RANTES and PF4, as shown by inhibition studies. Our results suggest that heterophilic interactions with PF4 require structural motifs important in RANTES oligomerization and amplify RANTES-triggered effects on monocyte adhesion. This may have implications for the modulation of inflammatory recruitment by platelet-derived chemokines.
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Cites
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Self-citationRANTES Deposition by Platelets Triggers Monocyte Arrest on Inflamed and Atherosclerotic Endothelium
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Targeting CCL5 in inflammation
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Metadata
- Authors
- von Hundelshausen, P., Koenen, R. R., Sack, M., Mause, S. F., Adriaens, W., Proudfoot, A. E. I., Hackeng, T. M., & Weber, C.
- Venue
- Blood
- Publisher
- American Society of Hematology
- Published
- 2005-02-01
- Volume
- 105
- Issue
- 3
- Pages
- 924-930
- ISSN
- 0006-4971 (ISSN-L)
- 1528-0020
- OpenAlex
- W2098101490
- Cited by
- 373
- References
- 44
- FWCI
- 6.64
- Type
- journal article
- Language
- en
- Open access
- closed
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- von Hundelshausen, P., Koenen, R. R., Sack, M., Mause, S. F., Adriaens, W., Proudfoot, A. E. I., Hackeng, T. M., & Weber, C. (2005). Heterophilic interactions of platelet factor 4 and RANTES promote monocyte arrest on endothelium. Blood. https://doi.org/10.1182/blood-2004-06-2475
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