Quantitative analysis of expression of NeuroD, GAP43 and receptor tyrosine kinase B in developing mouse olfactory neuroepithelium

Published on Aug 1, 2004in Acta Oto-laryngologica1.157
· DOI :10.1080/03655230410017742
Rie Yasui2
Estimated H-index: 2
(Kobe University),
Masumi Hasegawa1
Estimated H-index: 1
(Kobe University)
+ 4 AuthorsKen-ichi Nibu32
Estimated H-index: 32
(Kobe University)
Objective The mammalian olfactory neuroepithelium (OE), which harbors olfactory receptor neurons (ORNs), has the unusual characteristic of continuous neurogenesis throughout its lifetime. This unique feature provides an excellent model for neuronal differentiation. Recently, we found dual-phase expression of NeuroD, a member of the basic helix–loop–helix transcription factor family, in the developing mouse OE, suggesting multiple roles of NeuroD during the development of mammalian ORNs. Material and Methods In order to better understand the molecular mechanism of the development of ORNs, we performed quantitative analysis of expression of NeuroD, GAP43 and receptor tyrosine kinase B (TrkB), as well as 5-bromo-2′-deoxyuridine (BrdU)-labeled cells, in the developing mouse OE from gestational Day 10 to postnatal Day 28. Results During the embryonic period, NeuroD expression is mostly confined to the basal compartment. During the neonatal period, NeuroD expression is detected in two compartments: the middle c...
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