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Updated: Jan 25, 2026

Models of Bone Metastasis
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Models of Bone Metastasis

Published on: September 4, 2012

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Osteopontin as a multifaceted driver of bone metastasis and drug resistance

Xiaocong Pang1, Kan Gong2, Xiaodan Zhang1

  • 1Department of Pharmacy, Peking University First Hospital, Xicheng District, 10034, Beijing, China.

Pharmacological Research
|April 28, 2019
PubMed

Insights

Osteopontin (OPN) drives bone metastasis in advanced breast and prostate cancers by interacting with tumor cells and the bone microenvironment. Targeting OPN offers a promising strategy to combat cancer spread and overcome drug resistance.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Bone metastasis is a common complication in advanced breast and prostate cancers, leading to poor prognosis.
  • Tumor cell interactions with the bone microenvironment contribute to metastasis and therapeutic resistance.
  • Osteopontin (OPN), also known as SPP1, is implicated in tumor progression, including proliferation, angiogenesis, and metastasis.

Purpose of the Study:

  • To review the roles of Osteopontin (OPN) in the bone microenvironment and drug resistance.
  • To emphasize OPN's involvement in breast and prostate cancer bone metastasis.
  • To discuss potential therapeutic strategies targeting OPN.

Main Methods:

  • Literature review summarizing existing research on Osteopontin (OPN).
  • Analysis of OPN's interactions with receptors like αvβ3 integrin and CD44.
  • Discussion of signaling pathways induced by OPN.

Main Results:

  • OPN expression in tumor tissue and plasma correlates with poor prognosis in breast and prostate cancer patients.
  • OPN promotes tumor progression and metastasis through interactions with bone stromal cells.
  • OPN contributes to resistance against conventional therapies.

Conclusions:

  • Understanding OPN's function in the bone microenvironment is critical for developing new therapeutic targets.
  • Targeting OPN at various levels (transcription, protein, receptor binding, downstream signaling) shows therapeutic potential.
  • OPN represents a promising biomarker and therapeutic target for bone metastasis and drug resistance in advanced cancers.
Keywords:
Bone metastasisBreast cancerDrug resistanceOsteopontinProstate cancer

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