Cited by 19Alzheimer's disease research and treatmentsAdvanced Fluorescence Microscopy TechniquesSpectroscopy Techniques in Biomedical and Chemical Research

EMBER multidimensional spectral microscopy enables quantitative determination of disease- and cell-specific amyloid strains

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Yang, Hyunjun, Yuan, Peng, Wu, Yibing, Shi, Marie, Caro, Christoffer D., Tengeiji, Atsushi, Yamanoi, Shigeo, Inoue, Masahiro +2 more·2023·Proceedings of the National Academy of Sciences

Abstract

In neurodegenerative diseases, proteins fold into amyloid structures with distinct conformations (strains) that are characteristic of different diseases. However, there is a need to rapidly identify amyloid conformations in situ. Here, we use machine learning on the full information available in fluorescent excitation/emission spectra of amyloid-binding dyes to identify six distinct different conformational strains in vitro, as well as amyloid-β (Aβ) deposits in different transgenic mouse models. Our EMBER (excitation multiplexed bright emission recording) imaging method rapidly identifies conformational differences in Aβ and tau deposits from Down syndrome, sporadic and familial Alzheimer’s disease human brain slices. EMBER has in situ identified distinct conformational strains of tau inclusions in astrocytes, oligodendrocytes, and neurons from Pick’s disease. In future studies, EMBER should enable high-throughput measurements of the fidelity of strain transmission in cellular and animal neurodegenerative diseases models, time course of amyloid strain propagation, and identification of pathogenic versus benign strains.

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  1. [14]M. L. Cohen, Rapidly progressive Alzheimer’s disease features distinct structures of amyloid-β. Brain 138, 1009– 1022 (2015). 25688081 PMC5014074

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Authors
Yang, H., Yuan, P., Wu, Y., Shi, M., Caro, C. D., Tengeiji, A., Yamanoi, S., Inoue, M., DeGrado, W. F., & Condello, C.
Affiliations
University of California, San Francisco (US)
Corresponding author
  • DeGrado, William F.
  • Condello, Carlo
Venue
Proceedings of the National Academy of Sciences
Published
2023-03-16
Volume
120
Issue
12
Pages
e2300769120-e2300769120
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W4327566974
Cited by
19
References
71
Citations by year
2026: 2 · 2025: 7 · 2024: 8 · 2023: 2
FWCI
3.37
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
  • PubMed Central (submittedVersion, cc-by-nc-nd)
Funders
  • HHS | NIH | National Institute on Aging (AG061874, AG002132)
  • BrightFocus Foundation (A2020039F)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biophysics › Advanced Fluorescence Microscopy Techniques
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biophysics › Spectroscopy Techniques in Biomedical and Chemical Research
Keywords
amyloid-beta, tau protein, amyloid conformation, machine learning, Pick's disease, Down syndrome, Alzheimer's disease, transgenic mouse model, astrocytes, oligodendrocytes, neurons, neurodegenerative diseases, strain transfer

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