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Updated: May 4, 2026
12:13
Zinc-finger Nuclease Enhanced Gene Targeting in Human Embryonic Stem Cells
Published on: August 23, 2014
10.0K
Ectodermal factor restricts mesoderm differentiation by inhibiting p53
Noriaki Sasai1, Rieko Yakura, Daisuke Kamiya
1Organogenesis and Neurogenesis Group, RIKEN Center for Developmental Biology, Kobe 650-0047, Japan. norisa@cdb.riken.jp
Cell
|May 31, 2008
Summary
A novel zinc-finger protein, XFDL156, acts as an ectodermal factor that suppresses mesodermal differentiation during amphibian gastrulation by inhibiting p53 activity.
Area of Science:
- Developmental biology
- Molecular and cellular biology
Background:
- Embryonic development relies on precise germ layer specification.
- Mesoderm formation involves TGF-beta signaling and p53, but key zygotic factors remain unidentified.
Purpose of the Study:
- To identify novel zygotic factors regulating mesoderm specification during amphibian gastrulation.
- To elucidate the role of XFDL156 in ectodermal and mesodermal differentiation.
Main Methods:
- Overexpression and depletion of the zinc-finger protein XFDL156 in amphibian embryos.
- Analysis of mesodermal markers and p53 target gene induction.
- Investigation of protein-protein interactions between XFDL156 and p53.
Main Results:
- XFDL156, an ectodermal zygotic factor, was identified.
- Overexpression of XFDL156 inhibited mesodermal differentiation markers.
- Depletion of XFDL156 led to ectopic mesodermal differentiation in the ectoderm.
- XFDL156 interacts with p53, inhibiting its target gene activation and mesodermal differentiation.
Conclusions:
- XFDL156 actively suppresses mesodermal differentiation in the ectoderm.
- This suppression is mediated by controlling p53 activity and its spatiotemporal responsiveness.
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