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Targeted inhibition of ferroptosis in bone marrow mesenchymal stem cells by engineered exosomes alleviates bone loss in smoking-related osteoporosis

  • 0Department of Hand and Foot Surgery, Beilun Branch of the First Affliated Hospital, College of Medicine. Zhejiang University, Ningbo, China.
Materials Today. Bio +

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February 13, 2025

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February 13, 2025

View abstract on PubMed

Summary

This summary is machine-generated.

Engineered exosomes carrying curcumin target bone loss in smoking-related osteoporosis (SROP). This approach restores bone marrow stem cell function and mitigates bone density reduction in SROP mouse models.

Area Of Science

  • Biomedical Engineering
  • Cell Biology
  • Nanotechnology

Background

  • Smoking-related osteoporosis (SROP) involves reduced bone mass due to tobacco toxins.
  • Ferroptosis and reactive oxygen species (ROS) pathways are activated in SROP bone marrow mesenchymal stem cells (BMSCs).

Purpose Of The Study

  • To develop bone-targeting engineered exosomes for SROP treatment.
  • To investigate the therapeutic potential of curcumin delivered via engineered exosomes.

Main Methods

  • Genetic engineering introduced α-1,3-fucosyltransferase 6 (Fut6) into exosomes (F6-exo).
  • Exosomes were modified with a bone-targeting peptide ((AspSerSer)6) to create F6-(DSS)6-exo.
  • Curcumin was loaded into F6-(DSS)6-exo for targeted delivery.

Main Results

  • F6-(DSS)6-exo demonstrated bone-targeting capabilities.
  • Targeted curcumin delivery restored osteogenic differentiation potential in BMSCs.
  • Engineered exosomes mitigated bone loss in SROP mouse models.

Conclusions

  • Genetic engineering and peptide modification create effective bone-targeting exosomes.
  • This novel approach offers a promising therapeutic strategy for SROP.