Amyloid oligomers: spectroscopic characterization of amyloidogenic protein states

Amyloid oligomers: spectroscopic characterization of amyloidogenic protein states

Tác giả: Mikael Lindgren and Per Hammarström

Lĩnh vực: Physics, Chemistry

Nội dung tài liệu:

This review covers recent optical spectroscopic studies focusing on amyloid protein misfolding, oligomerization, and the growth of amyloid fibrils. It highlights the necessity of sensitive, real-time detection methods for oligomeric precursor states, which are often associated with amyloidosis and tissue damage. The paper discusses various fluorescent staining techniques, including the use of thioflavin T and other small molecules like 4-(dicyanovinyl)-julolidine and 1-amino-8-naphtalene sulphonate, which bind to hydrophobic patches. These methods have enabled the identification of populated oligomeric intermediates and related ‘prefibrillar structures’ in several human amyloidogenic systems. Additionally, the review explores advanced techniques such as multicolor labeling, single-molecule detection, and the use of pentameric thiophene derivatives for precise monitoring of oligomer size and distribution. The integration of molecular probes and optical spectroscopy is presented as a crucial avenue for understanding the role of oligomers in amyloidosis and for potentially linking structure to pathogenesis in the future.

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