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Title: Modulation of immune cell reactivity with cis -binding Siglec agonists

Inflammatory pathologies caused by phagocytes lead to numerous debilitating conditions, including chronic pain and blindness due to age-related macular degeneration. Many members of the sialic acid-binding immunoglobulin-like lectin (Siglec) family are immunoinhibitory receptors whose agonism is an attractive approach for antiinflammatory therapy. Here, we show that synthetic lipid-conjugated glycopolypeptides can insert into cell membranes and engage Siglec receptors incis, leading to inhibitory signaling. Specifically, we construct acis-binding agonist of Siglec-9 and show that it modulates mitogen-activated protein kinase (MAPK) signaling in reporter cell lines, immortalized macrophage and microglial cell lines, and primary human macrophages. Thus, thesecis-binding agonists of Siglecs present a method for therapeutic suppression of immune cell reactivity.

 
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NSF-PAR ID:
10209526
Author(s) / Creator(s):
; ; ;
Publisher / Repository:
Proceedings of the National Academy of Sciences
Date Published:
Journal Name:
Proceedings of the National Academy of Sciences
Volume:
118
Issue:
3
ISSN:
0027-8424
Page Range / eLocation ID:
Article No. e2012408118
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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