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Notch1 activity in the olfactory bulb is odour-dependent and contributes to olfactory behaviour

  • Brai, Emanuele Unit of Anatomy, Department of Medicine, University of Fribourg, Switzerland
  • Marathe, Swananda Unit of Anatomy, Department of Medicine, University of Fribourg, Switzerland
  • Zentilin, Lorena International Centre for Genetic Engineering and Biotechnology, Trieste, Italy
  • Giacca, Mauro International Centre for Genetic Engineering and Biotechnology, Trieste, Italy
  • Nimpf, Johannes Max F. Perutz Laboratories, Vienna Bio Center, Department of Medical Biochemistry, Medical University of Vienna, Austria
  • Kretz, Robert Unit of Anatomy, Department of Medicine, University of Fribourg, Switzerland
  • Scotti, Alessandra Unit of Anatomy, Department of Medicine, University of Fribourg, Switzerland - Unit of Anatomy, Department of Medicine, University of Bern, Switzerland
  • Alberi, Lavinia Unit of Anatomy, Department of Medicine, University of Fribourg, Switzerland
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    2014
Published in:
  • European Journal of Neuroscience. - 2014, vol. 40, no. 10, p. 3436–3449
mitral cells
neuronal activity
Notch1
olfactory avoidance
olfactory bulb
English Notch signalling plays an important role in synaptic plasticity, learning and memory functions in both Drosophila and rodents. In this paper, we report that this feature is not restricted to hippocampal networks but also involves the olfactory bulb (OB). Odour discrimination and olfactory learning in rodents are essential for survival. Notch1 expression is enriched in mitral cells of the mouse OB. These principal neurons are responsive to specific input odorants and relay the signal to the olfactory cortex. Olfactory stimulation activates a subset of mitral cells, which show an increase in Notch activity. In Notch1cKOKln mice, the loss of Notch1 in mitral cells affects the magnitude of the neuronal response to olfactory stimuli. In addition, Notch1cKOKln mice display reduced olfactory aversion to propionic acid as compared to wildtype controls. This indicates, for the first time, that Notch1 is involved in olfactory processing and may contribute to olfactory behaviour.
Faculty
Faculté des sciences et de médecine
Department
Médecine 3ème année, Département de Médecine
Language
  • English
Classification
Biological sciences
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/304163
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