PUBLICATION

A histone demethylase is necessary for regeneration in zebrafish

Authors
Stewart, S., Tsun, Z.Y., and Izpisúa Belmonte, J.C.
ID
ZDB-PUB-091120-38
Date
2009
Source
Proceedings of the National Academy of Sciences of the United States of America   106(47): 19889-19894 (Journal)
Registered Authors
Izpisúa Belmonte, Juan Carlos
Keywords
chromatin, polycomb
MeSH Terms
  • Animals
  • Chromatin/metabolism
  • Extremities/anatomy & histology
  • Extremities/physiology
  • Histones/genetics
  • Histones/metabolism
  • Homeodomain Proteins/genetics
  • Homeodomain Proteins/metabolism
  • Humans
  • Jumonji Domain-Containing Histone Demethylases/genetics
  • Jumonji Domain-Containing Histone Demethylases/metabolism*
  • Lysine/metabolism
  • Methylation
  • Oligonucleotides, Antisense/genetics
  • Oligonucleotides, Antisense/metabolism
  • Promoter Regions, Genetic
  • Regeneration/physiology*
  • Zebrafish/anatomy & histology
  • Zebrafish/physiology*
  • Zebrafish Proteins/genetics
  • Zebrafish Proteins/metabolism*
PubMed
19897725 Full text @ Proc. Natl. Acad. Sci. USA
Abstract
Urodele amphibians and teleost fish regenerate amputated body parts via a process called epimorphic regeneration. A hallmark of this phenomenon is the reactivation of silenced developmental regulatory genes that previously functioned during embryonic patterning. We demonstrate that histone modifications silence promoters of numerous genes involved in zebrafish caudal fin regeneration. Silenced developmental regulatory genes contain bivalent me(3)K4/me(3)K27 H3 histone modifications created by the concerted action of Polycomb (PcG) and Trithorax histone methyltransferases. During regeneration, this silent, bivalent chromatin is converted to an active state by loss of repressive me(3)K27 H3 modifications, occurring at numerous genes that appear to function during regeneration. Loss-of-function studies demonstrate a requirement for a me(3)K27 H3 demethylase during fin regeneration. These results indicate that histone modifications at discreet genomic positions may serve as a crucial regulatory event in the initiation of fin regeneration.
Genes / Markers
Figures
Show all Figures
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Antibodies
Orthology
Engineered Foreign Genes
Mapping