Periostin accelerates bone healing mediated by human mesenchymal stem cell-embedded hydroxyapatite/tricalcium...

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Tissue Engineering

Background:

• Periostin is an extracellular matrix protein crucial for bone formation and metabolism.
• Human adipose tissue-derived mesenchymal stem cells (hASCs) show potential in osteogenic differentiation and bone repair.
• The specific role of periostin in hASC-driven bone healing remains underexplored.

Purpose of the Study:

• To investigate the effect of periostin on the bone healing capacity of hASCs.
• To evaluate periostin's influence on hASC behavior in vitro and in vivo.
• To assess periostin's role in a critical-size calvarial defect model.

Main Methods:

• In vitro assessment of hASC migration, adhesion, and proliferation with periostin.
• In vivo implantation of hASCs and/or periostin in a critical-size calvarial defect model.
• Histological analysis of cell proliferation (Ki67), angiogenesis (CD31), and arteriole formation (α-SMA).

Main Results:

• Periostin significantly enhanced hASC proliferation, migration, and adhesion in vitro.
• Co-implantation of hASCs and periostin markedly improved bone healing in calvarial defects compared to either alone.
• Combined hASC and periostin treatment led to increased proliferation of transplanted cells and enhanced angiogenesis within the defects.

Conclusions:

• Recombinant periostin potentiates hASC-mediated bone healing.
• Periostin stimulates the proliferation of transplanted hASCs and promotes angiogenesis.
• Periostin is a promising therapeutic factor for enhancing bone regeneration using hASCs.