Cited by 333Alzheimer's disease research and treatmentsAdvanced Glycation End Products researchDementia and Cognitive Impairment Research

Analysis of microtubule-associated protein tau glycation in paired helical filaments.

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Ledesma, M.D., Bonay, P., Colaço, C., Avila, J.·1994·Journal of Biological Chemistry

Abstract

Alzheimer's disease is typified by the characteristic histopathological lesions of neurofibrillar plaques and tangles. The latter are composed of paired helical filaments (PHFs), the major components of which are modified forms of the microtubule-associated protein tau. The exact nature of these modifications remains unknown, although the presence of hyperphosphorylated tau in PHFs argues strongly that phosphorylation is one of the modifications that result in the polymerization of tau into PHFs. However, hyperphosphorylation alone is insufficient to explain the formation of PHFs. In an attempt to characterize other post-translational modifications of PHF-tau, we have analyzed its glycation. A fraction of PHF-tau seems to be glycated in vivo, whereas soluble tau from either Alzheimer's disease or non-demented human brain is not glycated at all. Purified tau from bovine brain can be efficiently glycated in vitro. Tau glycation is accompanied by a decrease in the tau binding to tubulin. These results support the view that glycation may be one of the modifications hampering the binding of tau to tubulin in Alzheimer's disease, thus facilitating tau aggregation into PHFs.

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  1. Greenberg, 1990, Proc. Natl. Acad. Sci. U. S. A., 87, 5825
  2. Himmler, 1989, Mol. Cell. Biol., 9, 1389
  3. Maillard, 1912, C. R. Acad. Sci., 154, 66

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Authors
Ledesma, M. D., Bonay, P., Colaço, C., & Avila, J.
Affiliations
Consejo Superior de Investigaciones Científicas (ES)
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1994-08
Volume
269
Issue
34
Pages
21614-21619
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1577069180
Cited by
333
References
72
Citations by year
2026: 1 · 2025: 2 · 2024: 7 · 2023: 6 · 2022: 4 · 2021: 8 · 2020: 2 · 2019: 12 · 2018: 13 · 2017: 7 · 2016: 10 · 2015: 5 · 2014: 13 · 2013: 11 · 2012: 13
FWCI
11.84
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion, cc-by)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Advanced Glycation End Products research
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
tau protein, glycation, paired helical filaments, Alzheimer's disease, post-translational modification, tau aggregation, neurofibrillary tangles, hyperphosphorylation
MeSH terms
Aged, Aged, 80 and over, Alzheimer Disease, Amino Acid Sequence, Animals, Brain Chemistry, Cattle, Diabetes Mellitus, Humans, Lysine, Microtubules, Molecular Sequence Data, Protein Binding, Neurofibrillary Tangles, tau Proteins, Glycation End Products, Advanced, Diabetes Complications

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