Cited by 1,476Neuroinflammation and Neurodegeneration MechanismsNeuroscience and Neuropharmacology ResearchNeurological Disease Mechanisms and Treatments

Microglia-specific localisation of a novel calcium binding protein, Iba1

Ito, Daisuke, Imai, Yoshinori, Ohsawa, Keiko, Nakajima, Kazuyuki, Fukuuchi, Yasuo, Kohsaka, Shinichi·1998·Molecular Brain Research

Abstract

Recently it has been shown that mRNA of Iba1 (ionized calcium binding adaptor molecule 1), which was a novel calcium binding protein cDNA-cloned by our group, is specifically expressed in microglia in cultures of rat brain cells [Imai et al. Biophys. Biochem. Res. Commun., 224 (1996) 855-862]. In the present study, immunocytochemical and immunohistochemical examinations demonstrated that Iba1 protein is expressed in microglia alone both in cultured brain cells and in the brain, respectively. In a mixed cell culture of embryonic rat brain, immunocytochemically positive for Iba1 protein were the microglia but it was not detectable in neurons, astroglia, or oligodendroglia. Immunohistochemical staining of adult rat brain sections showed Iba1 protein to be specifically localised in ramified microglia. In addition, immunohistochemical staining and immunoblot analysis of activated microglia in the facial nucleus after facial nerve axotomy shows that expression of Iba1 protein was upregulated and peaked at 7 days. These results indicated that localisation of Iba1 protein is restricted to microglia both in vitro and in vivo, and that Iba1 protein plays a role in regulating the function of microglia, especially in the activated microglia.

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Crossref · 10.1016/s0169-328x(98)00040-0

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Authors
Ito, D., Imai, Y., Ohsawa, K., Nakajima, K., Fukuuchi, Y., & Kohsaka, S.
Affiliations
  • Keio University (JP)
  • National Institute of Neuroscience (JP)
Corresponding author
Kohsaka, Shinichi
Venue
Molecular Brain Research
Publisher
Elsevier BV
Published
1998-06
Volume
57
Issue
1
Pages
1-9
ISSN
0169-328X (ISSN-L)
OpenAlex
W2053176712
Cited by
1,476
References
35
Citations by year
2026: 56 · 2025: 82 · 2024: 77 · 2023: 88 · 2022: 92 · 2021: 95 · 2020: 85 · 2019: 103 · 2018: 82 · 2017: 78 · 2016: 70 · 2015: 52 · 2014: 78 · 2013: 55 · 2012: 57
FWCI
5.80
Type
journal article
Language
en
Open access
closed
Locations
  • Molecular Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Neurology › Neurological Disease Mechanisms and Treatments
Keywords
Iba1, calcium-binding proteins, microglia, microglial activation, facial nerve axotomy, facial nucleus, ramified microglia, rat brain
MeSH terms
Animals, Brain, Calcium-Binding Proteins, Cells, Cultured, Facial Nerve, Fluorescent Antibody Technique, Microfilament Proteins, Motor Neurons, Rats, Wistar, Microglia, Axotomy, Rats

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