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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Connexin expression in the retina.

Here, we review recent results from our laboratory on connexin expression in mouse retina in the context of previous results with other vertebrate species. In mouse retina, four different connexin proteins were detected by immunoblot and immunofluorescence: connexin (Cx)-36, -37, -43 and -45. Cx36 and Cx45 immunoreactive signals were found in the inner and outer plexiform layer, both of which are known to show interneuronal gap junctions. Cx43 was detected in the ganglion cell layer, presumably in astrocytes, where it appeared to be colocalized with glial fibrillary acid protein. Cx37 was expressed in retinal endothelial cells. Additionally, Cx26, -31, -32 and -40 mRNAs were detected in retina by RT-PCR but none of the corresponding proteins were found. In order to exclude cross reactions of the corresponding antibodies, retinae from targeted connexin-deficient mice (Cx31 -/-, Cx32 -/- and Cx40 -/-) were used as negative controls for immunoblot and immunofluorescence analyses of wild-type retina. Further detailed investigation of cell type specific connexin expression in the mouse retina will be necessary for functional analyses of targeted mouse mutants with defects in connexins expressed in retinal neuronal cells.[1]


  1. Connexin expression in the retina. Söhl, G., Güldenagel, M., Traub, O., Willecke, K. Brain Res. Brain Res. Rev. (2000) [Pubmed]
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