Cited by 142Axon Guidance and Neuronal SignalingOlfactory and Sensory Function StudiesNeurogenesis and neuroplasticity mechanisms

BIG-2 Mediates Olfactory Axon Convergence to Target Glomeruli

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Kaneko-Goto, Tomomi, Yoshihara, Sei-ichi, Miyazaki, Haruko, Yoshihara, Yoshihiro·2008·Neuron

Abstract

Olfactory sensory neurons expressing a given odorant receptor converge axons onto a few topographically fixed glomeruli in the olfactory bulb, leading to establishment of the odor map. Here, we report that BIG-2/contactin-4, an axonal glycoprotein belonging to the immunoglobulin superfamily, is expressed in a subpopulation of mouse olfactory sensory neurons. A mosaic pattern of glomerular arrangement is observed with strongly BIG-2-positive, weakly positive, and negative axon terminals in the olfactory bulb, which is overlapping but not identical with those of Kirrel2 and ephrin-A5. There is a close correlation between the BIG-2 expression level and the odorant receptor choice in individual sensory neurons. In BIG-2-deficient mice, olfactory sensory neurons expressing a given odorant receptor frequently innervate multiple glomeruli at ectopic locations. These results suggest that BIG-2 is one of the axon guidance molecules crucial for the formation and maintenance of functional odor map in the olfactory bulb.

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Crossref · 10.1016/j.neuron.2008.01.023

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Authors
Kaneko-Goto, T., Yoshihara, S.-I., Miyazaki, H., & Yoshihara, Y.
Affiliations
RIKEN Center for Brain Science (JP)
Corresponding author
Yoshihara, Yoshihiro
Venue
Neuron
Publisher
Elsevier BV
Published
2008-03
Volume
57
Issue
6
Pages
834-846
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2050495774
Cited by
142
References
58
Citations by year
2026: 2 · 2024: 6 · 2023: 4 · 2022: 3 · 2021: 8 · 2020: 3 · 2019: 6 · 2018: 11 · 2017: 8 · 2016: 9 · 2015: 7 · 2014: 4 · 2013: 11 · 2012: 14
FWCI
6.63
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
Funders
Ministry of Education, Culture, Sports, Science and Technology
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Axon Guidance and Neuronal Signaling
  • Life Sciences › Neuroscience › Sensory Systems › Olfactory and Sensory Function Studies
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
Keywords
olfactory sensory neurons, axon guidance, olfactory glomeruli, olfactory receptors, odor maps, olfactory bulb, immunoglobulin superfamily, ephrin-A5
MeSH terms
Animals, Animals, Newborn, Axons, Gene Expression Regulation, Membrane Proteins, Mice, Transgenic, Nerve Net, Olfactory Bulb, Olfactory Nerve, Cell Adhesion Molecules, Neuronal, Gene Expression, Mutagenesis, Olfactory Receptor Neurons, Ephrin-A5, Mice, Olfactory Marker Protein, Contactins, Olfactory Nerve Injuries

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