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Related Experiment Videos

Notch Signaling Augments BMP9-Induced Bone Formation by Promoting the Osteogenesis-Angiogenesis Coupling Process in

Junyi Liao1,2, Qiang Wei2,3, Yulong Zou2,3

  • 1Departments of Orthopaedic Surgery, Blood Transfusion, Nephrology, and General Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.

Cellular Physiology and Biochemistry : International Journal of Experimental Cellular Physiology, Biochemistry, and Pharmacology
|April 7, 2017
PubMed

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Summary

Simultaneous activation of BMP9 and Notch signaling enhances bone formation by mesenchymal stem cells (MSCs). This approach effectively couples osteogenesis and angiogenesis, crucial for successful bone tissue engineering.

Area of Science:

  • Biomedical Engineering
  • Stem Cell Biology
  • Regenerative Medicine

Background:

  • Mesenchymal stem cells (MSCs) are vital for bone formation, requiring coordinated osteogenesis and angiogenesis.
  • BMP9 and Notch signaling pathways are implicated in bone development and vascularization.

Purpose of the Study:

  • To investigate the synergistic effects of BMP9 and Notch signaling on osteogenesis-angiogenesis coupling in MSCs.
  • To determine if simultaneous activation of these pathways enhances bone formation.

Main Methods:

  • Utilized immortalized mouse adipose-derived progenitors (iMADs) as MSCs.
  • Employed adenoviral vectors to express BMP9, NICD (active Notch1), and dnNotch1 (dominant-negative Notch1).
  • Assessed gene expression, osteogenic differentiation in vitro, and ectopic bone formation in vivo.
Keywords:
BMP9 signalingBone repairMesenchymal stem cellsNotch signalingOsteogenesis-angiogenesis couplingRegenerative medicine

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Main Results:

  • BMP9 upregulated Notch signaling components in iMADs.
  • Active Notch1 (NICD1) significantly enhanced BMP9-induced osteogenesis and angiogenesis, both in vitro and in vivo.
  • MSCs treated with BMP9 and NICD1 formed mature bone with extensive vascularization.

Conclusions:

  • Notch signaling plays a crucial role in BMP9-mediated osteogenesis and angiogenesis.
  • Co-activation of BMP9 and Notch pathways offers a promising strategy for bone tissue engineering by effectively coupling these processes.