Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 137, Issue 42, Pages 13503-13509Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.5b06190
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Funding
- A*STAR Joint Council Office, Singapore (JCO DP Grant) [1230400020]
- Singapore Ministry of Education Academic Research Fund [MOE2010-T2-2-030]
- NIH [NS073502, AG20245]
- Samsung Science and Technology Foundation [SSTF-BA1401-13]
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Aggregation of amyloid beta-peptide (A beta) is implicated in the pathology of Alzheimer's disease (AD), with the soluble, A beta oligomeric species thought to be the critical pathological species. Identification and characterization of intermediate species formed during the aggregation process is crucial to the understanding of the mechanisms by which oligomeric species mediate neuronal toxicity and following disease progression. Probing these species proved to be extremely challenging, as evident by the lack of reliable sensors, due to their heterogeneous and transient nature. We describe here an oligomer-specific fluorescent chemical probe, BoDipy-Oligomer (BD-Oligo), developed through the use of the diversity-oriented fluorescent library approach (DOFLA) and high-content, imaging-based screening. This probe enables dynamic oligomer monitoring during fibrillogenesis in vitro and shows in vivo A beta oligomers staining possibility in the AD mice model.
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