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Fractalkine/CX3CL1 induced intercellular adhesion molecule-1-dependent tumor metastasis through the

Ju-Fang Liu1, Ya-Ting Tsao2, Chun-Han Hou2

  • 1Central Laboratory, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan.

Oncotarget
|September 15, 2017
PubMed

Insights

Fractalkine (CX3CL1) drives osteosarcoma metastasis by increasing cell migration and upregulating ICAM-1. Targeting fractalkine may prevent bone cancer spread.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • Osteosarcoma is the most common pediatric bone cancer.
  • Molecular mechanisms of osteosarcoma progression are not fully understood.
  • CX3CL1/fractalkine's role in osteosarcoma is uninvestigated.

Purpose of the Study:

  • To investigate the role of CX3CL1/fractalkine in osteosarcoma.
  • To determine if fractalkine influences osteosarcoma cell migration and metastasis.

Main Methods:

  • Compared fractalkine expression in osteosarcoma vs. normal cells.
  • Investigated fractalkine's effect on cell migration via the CX3CR1/PI3K/Akt/NF-κB pathway.
  • Analyzed ICAM-1 expression changes.
  • Assessed the impact of fractalkine knockdown on metastasis in vivo.
  • Correlated CX3CL1 and ICAM-1 expression with clinical tumor stage.

Main Results:

  • Fractalkine expression is elevated in osteosarcoma.
  • Fractalkine significantly enhances osteosarcoma cell migration by upregulating ICAM-1.
  • The CX3CR1/PI3K/Akt/NF-κB pathway mediates fractalkine-induced migration.
  • Knockdown of fractalkine reduces cell migration and lung metastasis.
  • Clinical data show a correlation between CX3CL1, ICAM-1, and tumor stage.

Conclusions:

  • Fractalkine promotes osteosarcoma cell migration and metastasis.
  • Upregulation of ICAM-1 is a key mechanism.
  • CX3CL1/fractalkine represents a potential therapeutic target for osteosarcoma metastasis.
Keywords:
ICAM-1cell migrationfractalkinemetastasisosteosarcoma

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