Cited by 22Alzheimer's disease research and treatmentsMedicinal Plants and NeuroprotectionCholinesterase and Neurodegenerative Diseases

Exploring the inhibitory effects of liquiritigenin against tau fibrillation and related neurotoxicity as a model of preventive care in Alzheimer’s disease

Yuan, Xueling, Wang, Zhuo, Zhang, Lei, Sui, Rubo, Khan, Suliman·2021·International Journal of Biological Macromolecules

Abstract

Aggregation of tau protein into the form of insoluble amyloid fibrils is linked with Alzheimer's disease. The identification of potential small molecules that can inhibit tau protein from undergoing aggregation has received a great deal of interest, recently. In the present study, the possible inhibitory effects of liquiritigenin as a member of chiral flavanone family on tau amyloid fibrils formation and their resulting neurotoxicity were assessed by different biophysical and cellular assays. The inhibitory effect of the liquiritigenin against tau amyloid formation was investigated using thioflavin T (ThT) and 1-Anilino-8-naphthalene sulfonate (ANS) fluorescence spectroscopy, Congo red (CR) binding assays, transmission electron microscopy (TEM) analysis, and circular dichroism (CD) spectroscopy. Neurotoxicity assays were also performed against neuron-like cells (SH-SY5Y) using 3-(4,5-Dimethylthiazol)-2,5-diphenyltetrazolium bromide (MTT) reduction, reactive oxygen species (ROS), catalase (CAT) and caspase-3 activity measurements. We found that liquiritigenin served as an efficient inhibitor of tau amyloid fibrils formation through prevention of structural transition in tau structure, exposure of hydrophobic patches and their associated neurotoxicity mediated by decrease in the production of ROS and caspase-3 activity and elevation of CAT activity. These data may finally find applications in the development of promising inhibitors against amyloid fibril formation and treatment of Alzheimer's disease.

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Crossref · 10.1016/j.ijbiomac.2021.05.041

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Authors
Yuan, X., Wang, Z., Zhang, L., Sui, R., & Khan, S.
Affiliations
  • Jinzhou Medical University (CN)
  • Second Affiliated Hospital of Zhengzhou University (CN)
Corresponding author
  • Sui, Rubo
  • Khan, Suliman
Venue
International Journal of Biological Macromolecules
Publisher
Elsevier BV
Published
2021-07
Volume
183
Pages
1184-1190
ISSN
0141-8130 (ISSN-L)
OpenAlex
W3157536360
Cited by
22
References
67
Citations by year
2026: 3 · 2025: 6 · 2024: 5 · 2023: 4 · 2022: 3 · 2021: 1
FWCI
2.04
Type
journal article
Language
en
Open access
closed
Locations
  • International Journal of Biological Macromolecules (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Complementary and alternative medicine › Medicinal Plants and Neuroprotection
  • Health Sciences › Medicine › Pharmacology › Cholinesterase and Neurodegenerative Diseases
Keywords
liquiritigenin, tau protein, Alzheimer's disease, amyloid fibril formation inhibition, neurotoxicity, flavanones, reactive oxygen species, caspase-3, catalase, SH-SY5Y cells, Congo red binding, hydrophobic patch
MeSH terms
Anilino Naphthalenesulfonates, Catalase, Cell Line, Circular Dichroism, Humans, Neurons, Spectrometry, Fluorescence, tau Proteins, Reactive Oxygen Species, Neuroprotective Agents, Flavanones, Microscopy, Electron, Transmission, Cell Proliferation, Benzothiazoles, Caspase 3, Protein Aggregates

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