Stem Cell Gene Expression in Squamous Cell Carcinomas
Author Information
Author(s): Jensen Kim B., Jones Judith, Watt Fiona
Primary Institution: Wellcome Trust Centre for Stem Cell Research, University of Cambridge
Hypothesis
To investigate the relationship between stem cells in normal epithelium and in squamous cell carcinomas (SCCs).
Conclusion
SCCs do not reflect a simple expansion of stem cells; rather, tumor cells hijack the homeostatic controls that operate in normal stem cells.
Supporting Evidence
- Markers that are co-expressed in normal stem cells were not co-expressed in SCC.
- Downregulation of Lrig1 and MAP4, and upregulation of MCSP correlated with poor differentiation status.
- SCC lines showed a higher proportion of stem cells than primary keratinocytes.
Takeaway
This study looked at how stem cells in normal skin are different from those in skin cancers. It found that cancer cells change the way stem cells normally work.
Methodology
The study used real-time quantitative PCR to examine gene expression levels of stem cell markers in SCC cell lines and primary keratinocytes.
Potential Biases
There may be a risk of bias in the selection of SCC lines and the interpretation of marker expression.
Limitations
The study did not examine inter-clonal differences within the SCC lines.
Participant Demographics
The study involved primary human keratinocytes from neonatal foreskin and adult oral mucosa, as well as various SCC lines.
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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