Novel conformation-sensitive antibodies specific to three- and four-repeat tau

Hitomi Ueno, Ohoshi Murayama, Sumihiro Maeda, Naruhiko Sahara, Jung Mi Park, Miyuki Murayama, Akihiro Sanda, Kazuhiko Iwahashi, Motoo Matsuda, Akihiko Takashima

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6 Citations (Scopus)

Abstract

Two types of tau isoform, three- and four-repeat tau, are found in neurofibrillary tangles-a pathological hallmark of tauopathies. Which isoform is deposited in the affected tissues depends on the tauopathy. To study how and which tau isoforms contribute to neuronal degeneration, we have developed and characterized two novel conformation-sensitive antibodies, T3R and T4R. Two closely related synthetic peptides, PGGGKVQIVYK and PGGGSVQIVYK, respectively, were designed as antigens. The isoform-specific residues, 305K in three-repeat tau or 305S in four-repeat tau, and the PHF6 motif (VQIVYK) were identified as critical sequences. Despite the high similarity of the antigens, there was no cross-reactivity between T3R and T4R. Furthermore, T3R and T4R showed reduced binding to the thioflavin-positive β-structural form of their target. These features may enable these antibodies to act as novel indicators that allow us to observe and evaluate conformational changes in each distinct isoform of tau.

Original languageEnglish
Pages (from-to)602-607
Number of pages6
JournalBiochemical and Biophysical Research Communications
Volume358
Issue number2
DOIs
Publication statusPublished - 2007 Jun 29

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Keywords

  • Alzheimer's disease
  • Conformation-dependent antibody
  • Isoform-specific antibody
  • PHF6 motif
  • Tau isoform
  • Tauopathy
  • β-Structure

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

Cite this

Ueno, H., Murayama, O., Maeda, S., Sahara, N., Park, J. M., Murayama, M., Sanda, A., Iwahashi, K., Matsuda, M., & Takashima, A. (2007). Novel conformation-sensitive antibodies specific to three- and four-repeat tau. Biochemical and Biophysical Research Communications, 358(2), 602-607. https://doi.org/10.1016/j.bbrc.2007.04.176