Differentiation Generates Paracrine Cell Pairs That Maintain Basaloid Mouse Mammary Tumors
Author Information
Author(s): Kim Soyoung Goel, Shruti Alexander, Caroline M.
Primary Institution: McArdle Laboratory for Cancer Research, University of Wisconsin–Madison, Madison, Wisconsin
Hypothesis
We hypothesized that luminal tumor stem cells must express Lrp5 to maintain tumor growth.
Conclusion
The study demonstrates that both luminal and basal cells are essential for the growth of basaloid tumors, with luminal cells showing plasticity to differentiate into basal cells.
Supporting Evidence
- The study shows that luminal cells can retro-differentiate into basal cells.
- Both luminal and basal cells are necessary for tumor growth.
- Lrp5 expression is linked to tumor initiating activity in luminal cells.
Takeaway
This study shows that two types of cells in breast tumors help each other grow, and that one type can change into the other type when needed.
Methodology
The study used a mouse model to evaluate the interactions between luminal and basal cells in mammary tumors, employing flow cytometry and quantitative RT-PCR.
Limitations
The study is based on a mouse model, which may not fully replicate human breast cancer biology.
Statistical Information
P-Value
p=1.06×10−5
Confidence Interval
(1/390–1/2240)
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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