Cloning and spatiotemporal expression of RIC-8 in Xenopus embryogenesis

R Maldonado-Agurto, G Toro, J Fuentealba, C Arriagada, T Campos, M Albistur, J P Henriquez, J Olate, M V Hinrichs, M Torrejón

Research output: Contribution to journalArticlepeer-review


RIC-8 is a highly conserved protein that promotes G protein signaling as it acts as a Guanine nucleotide Exchanging Factor (GEF) over a subset of Gα subunits. In invertebrates, RIC-8 plays crucial roles in synaptic transmission as well as in asymmetric cell division. As a first step to address further studies on RIC-8 function in vertebrates, here we have cloned a ric-8 gene from Xenopus tropicalis (xtric-8) and determined its spatiotemporal expression pattern throughout embryogenesis. The xtric-8 transcript is expressed maternally and zygotically and, as development proceeds, it shows a dynamic expression pattern. At early developmental stages, xtric-8 is expressed in the animal hemisphere, whereas its expression is later restricted to neural tissues, such as the neural tube and the brain, as well as in the eye and neural crest-derived structures, including those of the craniofacial region. Together, our findings suggest that RIC-8 functions are related to the development of the nervous system.

Original languageEnglish
Pages (from-to)401-408
Number of pages8
JournalGene expression patterns : GEP
Issue number7
Publication statusPublished - Oct 2011


  • Amino Acid Sequence
  • Animals
  • Asymmetric Cell Division/genetics
  • Brain/metabolism
  • Cloning, Molecular
  • Embryonic Development/genetics
  • Gene Expression Regulation, Developmental
  • Guanine Nucleotide Exchange Factors/genetics
  • Molecular Sequence Data
  • Neural Tube/metabolism
  • Signal Transduction
  • Synaptic Transmission/genetics
  • Tissue Distribution/genetics
  • Xenopus/embryology
  • Xenopus Proteins/genetics


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