Abstract:
:Basigin (Bsg) is a transmembrane glycoprotein belonging to the immunoglobulin superfamily. Chicken Bsg (HT7/neurothelin/ 5A11) is expressed in neuroblasts, but disappears from neurons after a specific stage of cytodifferentiation, and becomes restrictedly expressed in the capillary endothelium in the adult brain. We show herein by means of in situ hybridization that Bsg mRNA was expressed in neuroblasts in 13.5 day old mouse embryos. In the adult mouse, Bsg was differentially expressed in subregions of the brain. Strong Bsg expression was detected in the limbic system, including the olfactory system, hippocampal formation, septal area, amygdala, thalamic anterior nuclei, hypothalamus, mesencephalic tegmentum, entorhinal cortex, and cingulate gyrus. Bsg was also intensely expressed in the retinal neuronal layers, the Vth layer of the cerebral neocortex, Purkinje cells of the cerebellum, several nuclei of the brain stem, and the gray matter of the spinal cord. Although in situ hybridization showed a weak signal in the brain capillary endothelium, protein expression of Bsg was strong enough to be detected by immunohistochemistry. Northern blot analysis confirmed the strong expression of Bsg in the central nervous system. Taking into account that Bsg knockout mice exhibit abnormalities in behavior, but a normal blood-brain barrier function, the present findings suggest that Bsg functions actively in neuronal interactions in the central nervous system.
journal_name
Neurosci Resjournal_title
Neuroscience researchauthors
Fan QW,Yuasa S,Kuno N,Senda T,Kobayashi M,Muramatsu T,Kadomatsu Kdoi
10.1016/s0168-0102(97)00119-3subject
Has Abstractpub_date
1998-01-01 00:00:00pages
53-63issue
1eissn
0168-0102issn
1872-8111pii
S0168-0102(97)00119-3journal_volume
30pub_type
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