The disparate role of BMP in stem cell biology

Alison C Varga1, Jeffrey L Wrana

  • 1Department of Molecular and Medical Genetics, University of Toronto, Toronto, M5S 1A8, Canada.

Oncogene
|August 27, 2005
PubMed

Insights

Bone morphogenetic proteins (BMPs) are key regulators of stem cell fate. This review explores BMP signaling in embryonic stem cells (ESCs) and neural crest stem cells (NCSCs), and their links to cancer.

Area of Science:

  • Stem cell biology
  • Cancer research
  • Molecular signaling pathways

Background:

  • Stem cells share traits with cancer cells, such as immortality and loss of contact inhibition.
  • Stem cells serve as a model for understanding cancer development.
  • Leukemia inhibitory factor, Wnt, and FGF pathways are known regulators of stem cell self-renewal and differentiation.

Purpose of the Study:

  • To review the role of bone morphogenetic proteins (BMPs) in stem cell fate.
  • To compare BMP signaling in mouse and human embryonic stem cells (ESCs) with neural crest stem cells (NCSCs).
  • To discuss the potential of BMP signaling molecular effectors as therapeutic targets in cancer.

Main Methods:

  • Review of existing literature on BMP signaling in stem cells.
  • Comparative analysis of BMP roles in ESCs and NCSCs.
  • Exploration of molecular mechanisms linking BMP signaling to cancer.

Main Results:

  • BMPs are emerging as critical regulators of stem cell fate commitment.
  • BMPs exhibit distinct roles in ESCs versus NCSCs.
  • BMPs inhibit neural differentiation in both mouse and human ESCs but promote self-renewal specifically in mouse ESCs.
  • Extracellular factors and intracellular pathway crosstalk precisely define stem cell fate.

Conclusions:

  • BMP signaling plays a complex and context-dependent role in stem cell fate.
  • Understanding BMP pathway effectors in stem cells may reveal new therapeutic strategies for cancer.

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