期刊
ACS MEDICINAL CHEMISTRY LETTERS
卷 6, 期 9, 页码 966-971出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsmedchemlett.5b00014
关键词
Structure elucidation; high-throughput screen; natural product; PDI; neuroprotection
资金
- Howard Hughes Medical Institute
- National Institute of Health [5R01CA097061, 5R01GM085081, R01CA161061]
- New York Stem Cell Science and Training Program in Molecular Biophysics [C026715, T32GM008281]
Compound libraries provide a starting point for multiple biological investigations, but the structural integrity of compounds is rarely assessed experimentally until a late stage in the research process. Here, we describe the discovery of a neuroprotective small molecule that was originally incorrectly annotated with a chemical structure. We elucidated the correct structure of the active compound using analytical chemistry, revealing it to be the natural product securinine. We show that securinine is protective in a cell model of Huntington disease and identify the binding site of securinine to its target, protein disulfide isomerase using NMR chemical shift perturbation studies. We show that securinine displays favorable pharmaceutical properties, making it a promising compound for in vivo studies in neurodegenerative disease models. In addition to finding this unexpected activity of securinine, this study provides a systematic roadmap to those who encounter compounds with incorrect structural annotation in the course of screening campaigns.
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