Cited by 420Alzheimer's disease research and treatmentsMicrotubule and mitosis dynamicsNeuroinflammation and Neurodegeneration Mechanisms

Phosphorylation determines two distinct species of tau in the central nervous system

Papasozomenos, Sozos Ch., Binder, Lester I.·1987·Cell Motility

Abstract

The monoclonal antibody, Tau‐1, which had previously been used to localize tau to the axonal compartment in brain has been reutilized for light and electron microscopic immunohistochemistry following phosphatase treatment of tissue. We report here that a significant quantity of tau in the central nervous system is phosphorylated in situ at or near the Tau‐1 epitope, preventing the binding of the Tau‐1 antibody. Upon removal of this/these phosphate group(s), however, Tau‐1 was observed in the somatodendritic compartment of neurons as well as in axons. Furthermore, intense staining was also observed in astrocytes and in perineuronal glial cells. This immunoreactivity was present along the lengths of microtubules and on ribosomes (polysomes). Treatment of immunoblots of extracts of whole cerebral cortex with phosphatase confirmed the immunohistochemical results in that a 50–65% increase in Tau‐1 binding to the tau region of the blot was noted. Moreover, a novel monoclonal antibody, Tau‐2, was also used in these experiments. This antibody binds only to tau and localizes along microtubulesin axons, somata, dendrites, and astrocytes and on ribosomes (polysomes) without phosphatase pretreatment.

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Crossref · 10.1002/cm.970080303

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Authors
Papasozomenos, S. C., & Binder, L. I.
Affiliations
University of Alabama at Birmingham (US)
Corresponding author
Papasozomenos, Sozos Ch.
Venue
Cell Motility
Publisher
Wiley
Published
1987-01
Volume
8
Issue
3
Pages
210-226
ISSN
0886-1544 (ISSN-L)
OpenAlex
W2005132906
Cited by
420
References
30
Citations by year
2026: 6 · 2025: 5 · 2024: 6 · 2023: 7 · 2022: 14 · 2021: 13 · 2020: 9 · 2019: 11 · 2018: 7 · 2017: 10 · 2016: 9 · 2015: 7 · 2014: 6 · 2013: 3 · 2012: 11
FWCI
14.47
Type
journal article
Language
en
Open access
closed
Locations
  • Cell Motility and the Cytoskeleton (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute on Aging (AG 06969)
  • National Institute of Neurological Disorders and Stroke (NS22453)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
tau protein, phosphorylation, phosphatase treatment, central nervous system, axons, astrocytes, microtubules, ribosome, polysomes, monoclonal antibodies, cerebral cortex
MeSH terms
Animals, Antibodies, Monoclonal, Epitopes, Axons, Brain, Chlorocebus aethiops, Female, Male, Microscopy, Electron, Microtubule-Associated Proteins, Molecular Weight, Nerve Tissue Proteins, Neurons, Phosphorylation, Rats, Inbred Strains, tau Proteins, Rats

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