Allosteric Inhibition of a Mammalian Lectin.
J Am Chem Soc
; 140(44): 14915-14925, 2018 11 07.
Article
em En
| MEDLINE
| ID: mdl-30303367
ABSTRACT
Glycan-binding proteins are key components of central physiological and cellular processes such as self-/non-self-recognition, cellular tissue homing, and protein homeostasis. Herein, C-type lectins are a diverse protein family that play important roles in the immune system, rendering them attractive drug targets. To evaluate C-type lectin receptors as target proteins for small-molecule effectors, chemical probes are required, which are, however, still lacking. To overcome the supposedly poor druggability of C-type lectin receptors and to identify starting points for chemical probe development, we screened murine langerin using 1H and 19F NMR against a library of 871 drug-like fragments. Subsequently, hits were validated by surface plasmon resonance and enzyme-linked lectin assay. Using structure-activity relationship studies and chemical synthesis, we identified thiazolopyrimidine derivatives with double-digit micromolar activity that displayed langerin selectivity. Based on 1H-15N HSQC NMR and competitive binding and inhibition experiments, we demonstrate that thiazolopyrimidines allosterically inhibit langerin. To the best of our knowledge, this is the first report of drug-like allosteric inhibitors of a mammalian lectin.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Pirimidinas
/
Lectinas Tipo C
/
Lectinas de Ligação a Manose
Limite:
Animals
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article