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Co-culture of Glioblastoma Stem-like Cells on Patterned Neurons to Study Migration and Cellular Interactions
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TRPV4 activates the Cdc42/N-wasp pathway to promote glioblastoma invasion by altering cellular protrusions

Wei Yang1, Peng-Fei Wu2, Jian-Xing Ma2

  • 1Department of Neurosurgery, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, 400037, P.R. China.

Scientific Reports
|August 27, 2020
PubMed

Insights

Transient receptor potential vanilloid 4 (TRPV4) drives glioblastoma cell invasion and metastasis. Targeting TRPV4 shows promise for treating aggressive brain tumors by inhibiting tumor growth and spread.

Area of Science:

  • Neuro-oncology
  • Molecular Biology
  • Cell Biology

Background:

  • Glioblastoma (GBM) invasion leads to poor patient prognosis.
  • The role of Transient Receptor Potential Vanilloid 4 (TRPV4) in GBM metastasis is not fully understood.

Purpose of the Study:

  • To investigate the role of TRPV4 in glioblastoma cell migration, invasion, and metastasis.
  • To elucidate the molecular mechanisms underlying TRPV4-mediated glioblastoma invasion.
  • To evaluate TRPV4 as a potential therapeutic target for GBM.

Main Methods:

  • Analysis of TRPV4 expression in glioma tissues and correlation with patient prognosis.
  • In vitro studies assessing the effects of TRPV4 stimulation and inhibition on glioblastoma cell migration and invasion.
  • Investigation of TRPV4 interactions with cytoskeletal proteins (F-actin) and regulation of cellular protrusions (invadopodia, filopodia).
  • Exploration of the Cdc42/N-wasp signaling pathway in TRPV4-mediated invasion.
  • In vivo studies using mouse models of GBM to assess the impact of TRPV4 inhibition or downregulation on tumor growth and invasion.

Main Results:

  • TRPV4 expression is significantly elevated in malignant glioma and negatively correlates with patient survival.
  • TRPV4 activation promotes, while its inhibition reduces, glioblastoma cell migration and invasion in vitro.
  • TRPV4 interacts with F-actin at cellular protrusions and regulates invadopodia and filopodia formation.
  • The Cdc42/N-wasp axis mediates TRPV4's effects on cellular protrusions and invasion.
  • Inhibition or downregulation of TRPV4 significantly reduces GBM invasion and growth in vivo.

Conclusions:

  • The TRPV4/Cdc42/wasp signaling axis is crucial for cellular protrusion formation and invasion in glioblastoma.
  • TRPV4 plays a significant role in glioblastoma cell invasion and metastasis.
  • TRPV4 represents a potential prognostic biomarker and a specific therapeutic target for GBM patients.

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