title: Pannexin-1 expression in developing mouse nervous system: new evidence for expression in sensory ganglia.
abstract: Pannexin1 (Panx1) is one of three members of the pannexin protein family. The expression of Panx1 mRNA has been extensively investigated from late embryonic to adult stages. In contrast, expression during early embryonic development is largely unknown. Our aim is to examine the temporal and spatial expression of Panx1 in mouse embryonic development by focusing on embryonic days (E) 9.5 to 12.5. Whole embryos are investigated in order to provide a comprehensive survey. Analyses were performed at the mRNA level by using reverse transcription plus the polymerase chain reaction and whole-mount in situ hybridization. Panx1 mRNA was detected in the heads and bodies of embryos at all developmental stages investigated (E9.5, E10.5, E11.5, E12.5). In particular, the nervous system expressed Panx1 at an early time point. Interestingly, Panx1 expression was found in afferent ganglia of the cranial nerves and spinal cord. This finding is of particular interest in the context of neuropathic pain and other Panx1-related neurological disorders. Our study shows, for the first time, that Panx1 is expressed in the central and peripheral nervous system during early developmental stages. The consequences of Panx1 deficiency or inhibition in a number of experimental paradigms might therefore be predicated on changes during early development.
authors.affiliation: Department of Anatomy and Cell Biology, Saarland University, Building 61, 66424, Homburg, Saar, Germany.
authors.forename: Abdulrahman
authors.initials: A
authors.lastname: Raslan
authors.affiliation: Department of Anatomy and Cell Biology, Saarland University, Building 61, 66424, Homburg, Saar, Germany.
authors.forename: Nadine
authors.initials: N
authors.lastname: Hainz
authors.affiliation: Department of Anatomy and Cell Biology, Saarland University, Building 61, 66424, Homburg, Saar, Germany.
authors.forename: Anja
authors.initials: A
authors.lastname: Beckmann
authors.affiliation: Department of Anatomy and Cell Biology, Saarland University, Building 61, 66424, Homburg, Saar, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: Tschernig
authors.affiliation: Department of Anatomy and Cell Biology, Saarland University, Building 61, 66424, Homburg, Saar, Germany. Carola.Meier@uks.eu.
authors.forename: Carola
authors.initials: C
authors.lastname: Meier
mesh_terms: D000818:Animals; D017630:Connexins / Q000096:biosynthesis* / Q000235:genetics; D004622:Embryo, Mammalian / Q000166:cytology / Q000196:embryology*; D017950:Ganglia, Sensory / Q000166:cytology / Q000196:embryology*; D018507:Gene Expression Regulation, Developmental / Q000502:physiology*; D051379:Mice; D008822:Mice, Transgenic; D009419:Nerve Tissue Proteins / Q000096:biosynthesis* / Q000235:genetics
chemical_list: D017630:Connexins; D009419:Nerve Tissue Proteins; C503631:Panx1 protein, mouse
keywords: Gap junction; Mouse; Panx1; Whole-mount in situ hybridization