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Src Promotes Metastasis of Human Non-Small Cell Lung Cancer Cells through Fn14-Mediated NF-κB Signaling

Wei Wang1,2, Feiyu Liu3, Chaoyang Wang2

  • 1Department of Thoracic Surgery, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong, China (mainland).

Medical Science Monitor : International Medical Journal of Experimental and Clinical Research
|March 4, 2018
PubMed

Insights

Src and Fn14 signaling drive non-small cell lung cancer (NSCLC) aggressiveness. This study reveals the Src/Fn14/NF-κB pathway is crucial for NSCLC metastasis, offering potential therapeutic targets.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • Src and Fn14 are linked to non-small cell lung cancer (NSCLC) aggressiveness.
  • The precise molecular mechanisms underlying this association remain incompletely understood.

Purpose of the Study:

  • To elucidate the molecular mechanism by which Src influences NSCLC aggressiveness.
  • To investigate the role of the Fn14/NF-κB signaling pathway in Src-mediated NSCLC metastasis.

Main Methods:

  • Investigated proliferation, migration, and invasion of HCC827 cells with Src knockdown in vitro.
  • Analyzed Fn14 expression and NF-κB pathway activation using western blot.
  • Validated the pro-metastatic role of Src in a NSCLC metastasis mouse model.

Main Results:

  • Src knockdown inhibited HCC827 cell proliferation, migration, and invasion, reducing Fn14 levels and NF-κB pathway activation.
  • Fn14 overexpression in Src-silenced cells restored migration, invasion, and NF-κB signaling.
  • Src inhibition suppressed lung metastasis in mice, decreasing Fn14 expression and NF-κB nuclear translocation.

Conclusions:

  • The Src/Fn14/NF-κB signaling axis is a critical regulator of NSCLC metastasis.
  • Targeting this pathway may offer a novel therapeutic strategy for NSCLC treatment.

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