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TRAIL-based therapy in pediatric bone tumors: how to overcome resistance

Romain Guiho1, Kevin Biteau, Dominique Heymann

  • 1INSERM, Nantes, France.

Future Oncology (London, England)
|February 13, 2015
PubMed

Insights

Osteosarcoma and Ewing's sarcoma are resistant to TRAIL therapy. Targeting the bone microenvironment may overcome this resistance, offering new therapeutic strategies for these pediatric bone cancers.

Area of Science:

  • Pediatric oncology
  • Cancer cell biology
  • Tumor microenvironment

Background:

  • Osteosarcoma and Ewing's sarcoma are aggressive pediatric bone cancers with poor prognoses.
  • Tumor necrosis-alpha-related apoptosis-inducing ligand (TRAIL) is a promising cancer therapy but shows limited efficacy against primary bone tumors due to inherent cell resistance.
  • Resistant osteosarcoma cells may activate pro-tumorigenic signaling pathways, exacerbating disease progression.

Purpose of the Study:

  • To investigate the role of the bone microenvironment in mediating TRAIL resistance in osteosarcoma.
  • To identify potential therapeutic strategies to overcome TRAIL resistance in pediatric bone cancers.

Main Methods:

  • Utilized osteosarcoma cell lines and in vitro models to assess TRAIL sensitivity.
  • Investigated signaling pathways involved in TRAIL resistance.
  • Explored the influence of bone-derived factors on cellular response to TRAIL.

Main Results:

  • Osteosarcoma cell lines exhibit significant resistance to TRAIL-induced apoptosis.
  • Evidence suggests the bone microenvironment contributes to and supports TRAIL resistance.
  • Activation of specific signaling pathways may promote proliferation and migration in resistant cells.

Conclusions:

  • TRAIL resistance is a major challenge in treating osteosarcoma and Ewing's sarcoma.
  • The bone microenvironment may create a niche that promotes TRAIL resistance.
  • Developing agents to resensitize these tumors to TRAIL holds therapeutic promise.
Keywords:
Ewing's sarcomaTRAILmicroenvironmentosteosarcomaresistance

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