Expression of the ERK-specific MAP kinase phosphatase PYST1/MKP3 in mouse embryos during morphogenesis and early organogenesis

Mech Dev. 2002 May;113(2):193-6. doi: 10.1016/s0925-4773(02)00024-2.


Mitogen-activated-protein kinase (MAP kinase) cascades are effector mechanisms for many growth factor signals implicated in developmental processes, including appendage outgrowth and organogenesis. The cascade culminates in extracellular-signal-regulated MAP kinase (ERK), which enters the nucleus. ERK activity reflects the competing actions of upstream activator kinases and inhibitory MAP kinase phosphatases. We have studied embryonic expression of the dual-specificity MAP kinase phosphatase PYST1/MKP3, which is a specific and potent regulator of the ERK class of MAP kinases. We found dynamic patterns of mPyst1 messenger RNA in important signalling centres associated with cell proliferation and patterning in developing mouse embryos, including presegmental paraxial mesoderm, limb bud and branchial arch mesenchyme, midbrain/hindbrain isthmus, and nasal, dental, hair, and mammary placodes. Most of these have been characterised as sites of FGF/FGFR signalling.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cell Division
  • Dual Specificity Phosphatase 6
  • Embryo, Mammalian / metabolism*
  • Gene Expression*
  • MAP Kinase Signaling System
  • Mice
  • Mitogen-Activated Protein Kinases / metabolism
  • Protein Tyrosine Phosphatases / biosynthesis*
  • Signal Transduction
  • Time Factors
  • Tissue Distribution


  • Mitogen-Activated Protein Kinases
  • Dual Specificity Phosphatase 6
  • Dusp6 protein, mouse
  • Protein Tyrosine Phosphatases