Your browser doesn't support javascript.
loading
Voltage-gated sodium channel activity mediates sea urchin larval skeletal patterning through spatial regulation of Wnt5 expression.
Thomas, Christopher F; Hawkins, Dakota Y; Skidanova, Viktoriya; Marrujo, Simone R; Gibson, Janay; Ye, Ziqing; Bradham, Cynthia A.
Afiliação
  • Thomas CF; Department of Biology, Boston University, Boston, MA 02215, USA.
  • Hawkins DY; Program in Cell and Molecular Biology, Boston University, Boston, MA 02215, USA.
  • Skidanova V; Department of Biology, Boston University, Boston, MA 02215, USA.
  • Marrujo SR; Program in Bioinformatics, Boston University, Boston, MA 02215, USA.
  • Gibson J; Department of Biology, Boston University, Boston, MA 02215, USA.
  • Ye Z; Whitworth University, Spokane, WA 99251, USA.
  • Bradham CA; Alabama A&M University, Huntsville, AL 35811, USA.
Development ; 150(10)2023 05 15.
Article em En | MEDLINE | ID: mdl-37139779
Defining pattern formation mechanisms during embryonic development is important for understanding the etiology of birth defects and to inform tissue engineering approaches. In this study, we used tricaine, a voltage-gated sodium channel (VGSC) inhibitor, to show that VGSC activity is required for normal skeletal patterning in Lytechinus variegatus sea urchin larvae. We demonstrate that tricaine-mediated patterning defects are rescued by an anesthetic-insensitive version of the VGSC LvScn5a. Expression of this channel is enriched in the ventrolateral ectoderm, where it spatially overlaps with posterolaterally expressed Wnt5. We show that VGSC activity is required to spatially restrict Wnt5 expression to this ectodermal region that is adjacent and instructive to clusters of primary mesenchymal cells that initiate secretion of the larval skeleton as triradiates. Tricaine-mediated Wnt5 spatial expansion correlates with the formation of ectopic PMC clusters and triradiates. These defects are rescued by Wnt5 knockdown, indicating that the spatial expansion of Wnt5 is responsible for the patterning defects induced by VGSC inhibition. These results demonstrate a previously unreported connection between bioelectrical status and the spatial control of patterning cue expression during embryonic pattern formation.
Assuntos
Palavras-chave

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Ouriços-do-Mar / Lytechinus Limite: Animals Idioma: En Revista: Development Assunto da revista: BIOLOGIA / EMBRIOLOGIA Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Estados Unidos

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Ouriços-do-Mar / Lytechinus Limite: Animals Idioma: En Revista: Development Assunto da revista: BIOLOGIA / EMBRIOLOGIA Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Estados Unidos