Mitochondrial Targeted Catalase Suppresses Invasive Breast Cancer in Mice
Author Information
Author(s): Goh Jorming, Enns Linda, Soroosh Fatemie, Hopkins Heather, Morton John, Pettan-Brewer Christina, Ladiges Warren
Primary Institution: University of Washington
Hypothesis
Can mitochondrial targeted catalase reduce the invasiveness and metastatic potential of breast cancer in a mouse model?
Conclusion
Targeting catalase within mitochondria of tumor cells and tumor stromal cells suppresses ROS-driven tumor progression and metastasis.
Supporting Evidence
- PyMT mice expressing mCAT had a 12.5% incidence of high histological grade primary tumor invasiveness compared to 62.5% in mice without mCAT.
- 56% of PyMT mice positive for mCAT showed evidence of pulmonary metastasis compared to 85.4% of those negative for mCAT.
- mCAT expression resulted in lower ROS levels and increased resistance to oxidative stress in tumor cells.
Takeaway
This study found that a special enzyme can help stop breast cancer from spreading in mice by reducing harmful substances in cells.
Methodology
Transgenic mice expressing a human catalase gene were crossed with mice that develop metastatic breast cancer, and tumors were assessed for invasiveness and metastatic foci.
Limitations
The study was conducted in a mouse model, which may not fully replicate human breast cancer behavior.
Participant Demographics
Transgenic mice (FVB/N-Tg (MMTV-PyMT) 634 Mul/J) were used in the study.
Statistical Information
P-Value
p ≤ 0.01
Statistical Significance
p ≤ 0.05
Digital Object Identifier (DOI)
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