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Stimulation of Notch Signaling in Mouse Osteoclast Precursors
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Stimulation of Notch Signaling in Mouse Osteoclast Precursors

Published on: February 28, 2017

Nanog inhibits the switch of myogenic cells towards the osteogenic lineage

Bose S Kochupurakkal1, Rachel Sarig, Ora Fuchs

  • 1Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot 76100, Israel.

Biochemical and Biophysical Research Communications
|November 28, 2007
PubMed

Insights

The homeodomain transcription factor Nanog controls pluripotency in embryonic stem cells. Nanog inhibits trans-differentiation of committed cells, not terminal differentiation, by blocking new gene transcription.

Area of Science:

  • Stem cell biology
  • Developmental biology
  • Molecular genetics

Background:

  • The homeodomain transcription factor Nanog is crucial for maintaining pluripotency in embryonic stem (ES) cells.
  • Nanog's role in differentiation and lineage commitment requires further elucidation.

Purpose of the Study:

  • To investigate the specific roles of Nanog in cellular differentiation and lineage plasticity.
  • To determine if Nanog inhibits terminal differentiation or trans-differentiation in committed cells.

Main Methods:

  • Ectopic expression of Nanog in mouse myogenic C2 cells.
  • Assessment of terminal muscle differentiation.
  • Induction of osteogenic differentiation using BMP treatment.
  • Gene expression profiling and analysis of key differentiation markers (e.g., ERK 1/2 phosphorylation, alkaline phosphatase, osteocalcin).

Main Results:

  • Nanog expression did not affect terminal muscle differentiation in C2 cells.
  • Nanog significantly inhibited the osteogenic trans-differentiation of C2 cells upon BMP stimulation.
  • Key osteogenic markers and signaling pathways (ERK 1/2) showed suppressed induction in Nanog-expressing cells.

Conclusions:

  • Nanog acts as an inhibitor of trans-differentiation in committed cells.
  • This inhibition is dependent on the de novo activation of gene transcription.
  • Nanog's function is context-dependent, affecting lineage plasticity rather than terminal differentiation potential.

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