Stilbene Boronic Acids Form a Covalent Bond with Human Transthyretin and Inhibit Its Aggregation
Journal Article
·
· Journal of Medicinal Chemistry
- Univ. of Wisconsin, Madison, WI (United States)
Transthyretin (TTR) is a homotetrameric protein. Its dissociation into monomers leads to the formation of fibrils that underlie human amyloidogenic diseases. The binding of small molecules to the thyroxin-binding sites in TTR stabilizes the homotetramer and attenuates TTR amyloidosis. Herein, we report on boronic acid-substituted stilbenes that limit TTR amyloidosis in vitro. Assays of affinity for TTR and inhibition of its tendency to form fibrils were coupled with X-ray crystallographic analysis of nine TTR·ligand complexes. The ensuing structure–function data led to a symmetrical diboronic acid that forms a boronic ester reversibly with serine 117. This diboronic acid inhibits fibril formation by both wild-type TTR and a common disease-related variant, V30M TTR, as effectively as does tafamidis, a small-molecule drug used to treat TTR-related amyloidosis in the clinic. We conclude these findings establish a new modality for covalent inhibition of fibril formation and illuminate a path for future optimization.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Sponsoring Organization:
- Genentech Predoctoral Fellowship; National Institutes of Health (NIH); National Science Foundation (NSF)
- OSTI ID:
- 1438876
- Journal Information:
- Journal of Medicinal Chemistry, Journal Name: Journal of Medicinal Chemistry Journal Issue: 18 Vol. 60; ISSN 0022-2623
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- ENGLISH
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