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Updated: Apr 28, 2026
12:03
In Vivo Model for Testing Effect of Hypoxia on Tumor Metastasis
Published on: December 9, 2016
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Hypoxia signaling and the metastatic phenotype
H Mujcic, R P Hill, M Koritzinsky
1Princess Margaret Cancer Centre and Campbell Family Institute for Cancer Research, University Health Network, 610 University Ave, Toronto, ON M5G 2M9, Canada. bwouters@uhnresearch.ca.
Current Molecular Medicine
|June 5, 2014
Summary
Poor oxygen (hypoxia) in tumors drives cancer spread. While hypoxia-inducible factors (HIFs) were studied, new research shows the unfolded protein response (UPR) also significantly promotes tumor metastasis.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Research
Background:
- Hypoxia is common in solid tumors, linked to poor prognosis and treatment resistance.
- Hypoxia triggers signaling pathways like HIF1/2 and UPR, promoting cancer cell adaptation and survival.
- These pathways can alter gene expression, influencing cancer cell metastasis.
Purpose of the Study:
- To investigate hypoxia-induced signaling pathways that promote tumor metastasis.
- To explore the role of the unfolded protein response (UPR) in hypoxia-mediated metastasis, beyond the established HIF pathway.
Main Methods:
- Analysis of signaling pathways activated by tumor hypoxia.
- Investigation of gene expression and cellular phenotype changes under hypoxic conditions.
- Focus on the contribution of UPR activation to cancer cell metastasis.
Main Results:
- Hypoxia activates HIF1/2 and UPR signaling pathways in tumor cells.
- These pathways induce changes promoting cancer cell adaptation and survival.
- Recent evidence highlights UPR activation as a key mediator of hypoxia-driven metastasis.
Conclusions:
- Hypoxia significantly impacts tumor malignancy and metastasis.
- Both HIF and UPR pathways are critical in mediating hypoxia-induced metastasis.
- Understanding UPR's role offers new therapeutic targets for preventing cancer spread.
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