A small-molecule inhibitor of lectin-like oxidized LDL receptor-1 acts by stabilizing an inactive receptor tetramer state

Autor: Dennis Fiegen, Ralf Heilker, Herbert Nar, Iain Lingard, Klaus Klinder, Michael Wolff, Heike Neubauer, Jürgen Prestle, Francois Debaene, Gisela Schnapp, Frank H. Büttner, Sandra Handschuh, Markus Zeeb, Rainer Walter
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Communications Chemistry, Vol 3, Iss 1, Pp 1-11 (2020)
ISSN: 2399-3669
Popis: The C-type lectin family member lectin-like oxidized LDL receptor-1 (LOX-1) has been object of intensive research. Its modulation may offer a broad spectrum of therapeutic interventions ranging from cardiovascular diseases to cancer. LOX-1 mediates uptake of oxLDL by vascular cells and plays an important role in the initiation of endothelial dysfunction and its progression to atherosclerosis. So far only a few compounds targeting oxLDL-LOX-1 interaction are reported with a limited level of characterization. Here we describe the identification and characterization of BI-0115, a selective small molecule inhibitor of LOX-1 that blocks cellular uptake of oxLDL. Identified by a high throughput screening campaign, biophysical analysis shows that BI-0115 binding triggers receptor inhibition by formation of dimers of the homodimeric ligand binding domain. The structure of LOX-1 bound to BI-0115 shows that inter-ligand interactions at the receptor interfaces are key to the formation of the receptor tetramer thereby blocking oxLDL binding. Lectin-like oxidised LDL receptor 1, LOX-1, is implicated in cardiovascular diseases and cancer. Here a small molecule inhibitor of LOX-1 is introduced, which in a unique mode of action stabilises dimers of LOX-1 to prevent LOX-1 mediated signalling.
Databáze: OpenAIRE
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