Comprehensive expression analysis for the core cell cycle regulators in the chicken embryo reveals novel tissue‐specific synexpression groups and similarities and differences with expression in mouse, frog and zebrafish

Marta Alaiz Noya, Federica Berti, Susanne Dietrich

Research output: Contribution to journalArticlepeer-review

15 Downloads (Pure)

Abstract

The core cell cycle machinery is conserved from yeast to humans, and hence it is assumed that all vertebrates share the same set of players. Yet during vertebrate evolution, the genome was duplicated twice, followed by a further genome duplication in teleost fish. Thereafter, distinct genes were retained in different vertebrate lineages; some individual gene duplications also occurred. To which extent these diversifying tendencies were compensated by retaining the same expression patterns across homologous genes is not known. This study for the first time undertook a comprehensive expression analysis for the core cell cycle regulators in the chicken, focusing in on early neurula and pharyngula stages of development, with the latter representing the vertebrate phylotypic stage. We also compared our data with published data for the mouse, Xenopus and zebrafish, the other established vertebrate models. Our work shows that, while many genes are expressed widely, some are upregulated or specifically expressed in defined tissues of the chicken embryo, forming novel synexpression groups with markers for distinct developmental pathways. Moreover, we found that in the neural tube and in the somite, mRNAs of some of the genes investigated accumulate in a specific subcellular localisation, pointing at a novel link between the site of mRNA translation, cell cycle control and interkinetic nuclear movements. Finally, we show that expression patterns of orthologous genes may differ in the four vertebrate models. Thus, for any study investigating cell proliferation, cell differentiation, tissue regeneration, stem cell behaviour and cancer/cancer therapy, it has to be carefully examined which of the observed effects are due to the specific model organism used, and which can be generalised.
Original languageEnglish
JournalJournal of Anatomy
Early online date10 Feb 2022
DOIs
Publication statusEarly online - 10 Feb 2022

Keywords

  • Cdc25 genes
  • Cdk genes
  • Cdkn genes
  • cell differentiation
  • cell division
  • Chicken embryo
  • comparison with mouse
  • frog
  • zebrafish expression data
  • Cyclin (Ccn) genes
  • in situ hybridisation
  • myogenesis
  • neurogenesis
  • neurula
  • pharyngula
  • subcellular mRNA localisation

Fingerprint

Dive into the research topics of 'Comprehensive expression analysis for the core cell cycle regulators in the chicken embryo reveals novel tissue‐specific synexpression groups and similarities and differences with expression in mouse, frog and zebrafish'. Together they form a unique fingerprint.

Cite this