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From Hypoxia to Bone: Reprogramming the Prostate Cancer Metastatic Cascade.

Melissa Santos1, Sarah Koushyar2, Dafydd Alwyn Dart2

  • 1Cancer Mechanisms and Biomarkers Research Group, School of Life Sciences, University of Westminster, London W1W 6UW, UK.

International Journal of Molecular Sciences
|August 14, 2025
PubMed
Summary
This summary is machine-generated.

Hypoxia drives prostate cancer (PCa) bone metastasis by promoting cellular changes and forming pre-metastatic niches. Targeting hypoxia-related pathways offers new strategies against castration-resistant PCa (CRPC) bone spread.

Keywords:
EMTHIF-1αWnt signallingbone metastasisextracellular vesicleshypoxiaprostate cancertherapy resistance

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Area of Science:

  • Oncology
  • Cancer Metastasis
  • Molecular Biology

Background:

  • Bone metastasis is a frequent and severe complication of advanced prostate cancer (PCa).
  • Tumor hypoxia is a key driver of PCa bone tropism, influencing epithelial-to-mesenchymal transition (EMT), cancer stemness, and extracellular matrix (ECM) remodeling.
  • Hypoxia also promotes the formation of pre-metastatic niches and skeletal colonization via extracellular vesicles (EVs) and bone-homing molecules.

Purpose of the Study:

  • To review the molecular mechanisms by which hypoxia orchestrates prostate cancer dissemination to bone.
  • To explore therapeutic strategies targeting hypoxia-driven pathways for advanced and castration-resistant prostate cancer (CRPC).

Main Methods:

  • Analysis of current evidence on hypoxia's role in PCa bone metastasis.
  • Focus on molecular crosstalk between Hypoxia-Inducible Factor (HIF) signaling, Wnt activation, EV communication, and cellular plasticity.
  • Examination of therapeutic strategies including HIF inhibitors, hypoxia-activated prodrugs, and Wnt antagonists.

Main Results:

  • Hypoxia promotes PCa bone metastasis through EMT, stemness, ECM remodeling, and activation of Wnt/β-catenin and PI3K/Akt pathways.
  • Hypoxia enhances EV secretion and upregulates bone-homing molecules (CXCR4, integrins, PIM kinases), facilitating niche formation.
  • Therapeutic strategies targeting hypoxia pathways show promise in overcoming resistance in CRPC.

Conclusions:

  • Understanding hypoxia's role in PCa bone metastasis is crucial for developing effective treatments.
  • Targeting hypoxia-related pathways and molecular crosstalk presents promising avenues for improving outcomes in advanced PCa.
  • Further research into these mechanisms can lead to novel therapeutic interventions for CRPC bone disease.