[The expression of neuN in the development of olfactory bulb and epithelium of mice].
OBJECTIVE
To study the expression characteristics of NeuN (neuron-specific nuclear protein/neuronal nuclei) in the development of mice olfactory bulb and epithelium.


METHODS
The expression of NeuN in the heads of E9.5, E11.5, E14.5, E17.5, newborn and adult mice were examined by immunofluorescence method.


RESULTS
NeuN was expressed in mature neural cells at the margin area of olfactory bulb of new natal mice while the layers of olfactory bulb could not be distinguished. Mature neural cells expressing NeuN aggregated in the granule cells layer, when layers of olfactory bulb of adult mice were clearly formed. The expression of NeuN could not be observed in bipolar olfactory receptor neurons (ORN) in olfactory epithelium.


CONCLUSIONS
It is usually believed that NeuN is expressed in most mature neurons. However, during the development of olfactory bulb and epithelium, NeuN is expressed only in mature neural cells migrating from margin area to the inner granule cells layer of olfactory bulb. It is proposed that the migration of granule cells in olfactory bulb might be related to the formation of smell pattern.
Wei
Hongquan
H
Department of Otolaryngology, the First Affiliated Hospital of China Medical University, Shenyang, 110001, China. hongquanwei@163.com
Li
Xiaotian
X
Yu
Gang
G
Cao
Zhiwei
Z
Nibu
Kenichi
K
D000818:Animals; D000831:Animals, Newborn; D004268:DNA-Binding Proteins; D005260:Female; D051379:Mice; D009419:Nerve Tissue Proteins / Q000378:metabolism*; D009474:Neurons / Q000378:metabolism; D009687:Nuclear Proteins / Q000378:metabolism*; D009830:Olfactory Bulb / Q000196:embryology / Q000254:growth & development / Q000378:metabolism*; D009831:Olfactory Mucosa / Q000196:embryology / Q000254:growth & development / Q000378:metabolism*; D011247:Pregnancy
D004268:DNA-Binding Proteins; D009419:Nerve Tissue Proteins; C492380:NeuN protein, mouse; D009687:Nuclear Proteins