ZFIN ID: ZDB-PUB-141203-19
Pten function in zebrafish: anything but a fish story
Stumpf, M., Choorapoikayil, S., den Hertog, J.
Date: 2015
Source: Methods (San Diego, Calif.)   77-78: 191-6 (Review)
Registered Authors: Choorapoikayil, Suma, den Hertog, Jeroen
Keywords: Angiogenesis, Hemangiosarcoma, Hematopoiesis, PTEN, Zebrafish
MeSH Terms:
  • Amino Acid Sequence
  • Animals
  • Animals, Genetically Modified
  • Humans
  • Models, Animal*
  • Molecular Sequence Data
  • PTEN Phosphohydrolase/physiology*
  • Species Specificity
  • Tumor Suppressor Proteins/physiology*
  • Zebrafish
  • Zebrafish Proteins/physiology*
PubMed: 25461815
Zebrafish is an excellent model system for the analysis of gene function. We and others use zebrafish to investigate the function of the tumor suppressor, Pten, in tumorigenesis and embryonic development. Zebrafish have two pten genes, ptena and ptenb. The recently identified N-terminal extension of human PTEN that may facilitate cell membrane transfer, appears not to be conserved in zebrafish Ptena or Ptenb. Mutants that retain a single wild type pten allele develop tumors, predominantly hemangiosarcomas. Homozygous double mutants are embryonic lethal. Zebrafish embryos lacking functional Pten display enhanced proliferation of endothelial cells, resulting in hyperbranching of blood vessels. In addition, ptena-/-ptenb-/- mutant embryos display enhanced proliferation of hematopoietic stem and progenitor cells and concomitant arrest of differentiation, although Pten-deficient cells commit to all blood cell lineages. Zebrafish is an ideal model for intravital imaging and future work using ptena-/-ptenb-/- mutants will enhance our understanding of the function of Pten in vivo.