Abstract:
:In acute and chronic inflammation, neutrophils and platelets, both of which promote monocyte recruitment, are often activated simultaneously. We investigated how secretory products of neutrophils and platelets synergize to enhance the recruitment of monocytes. We found that neutrophil-borne human neutrophil peptide 1 (HNP1, α-defensin) and platelet-derived CCL5 form heteromers. These heteromers stimulate monocyte adhesion through CCR5 ligation. We further determined structural features of HNP1-CCL5 heteromers and designed a stable peptide that could disturb proinflammatory HNP1-CCL5 interactions. This peptide attenuated monocyte and macrophage recruitment in a mouse model of myocardial infarction. These results establish the in vivo relevance of heteromers formed between proteins released from neutrophils and platelets and show the potential of targeting heteromer formation to resolve acute or chronic inflammation.
journal_name
Sci Transl Medjournal_title
Science translational medicineauthors
Alard JE,Ortega-Gomez A,Wichapong K,Bongiovanni D,Horckmans M,Megens RT,Leoni G,Ferraro B,Rossaint J,Paulin N,Ng J,Ippel H,Suylen D,Hinkel R,Blanchet X,Gaillard F,D'Amico M,von Hundelshausen P,Zarbock A,Scheiermanndoi
10.1126/scitranslmed.aad5330subject
Has Abstractpub_date
2015-12-09 00:00:00pages
317ra196issue
317eissn
1946-6234issn
1946-6242pii
7/317/317ra196journal_volume
7pub_type
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