Production of TGF-a and TGF-P by Cultured Keratinocytes and Oral Squamous Cell Carcinomas
Author Information
Author(s): M. Partridge, M.R. Green, J.D. Langdon, M. Feldmann
Hypothesis
Can transforming growth factors TGF-a and TGF-P regulate the proliferation of normal and malignant epithelial cells?
Conclusion
The study provides evidence that TGF-a is produced by both normal keratinocytes and oral squamous cell carcinomas, suggesting an autocrine role in cell proliferation.
Supporting Evidence
- TGF-a was detected in cultured keratinocytes and oral squamous cell carcinomas.
- An inverse correlation was found between TGF-a levels and epidermal growth factor receptor levels in tumors.
- EGF treatment increased TGF-a production in keratinocytes.
Takeaway
This study found that certain growth factors made by skin cells can help them grow, and this process might also happen in cancer cells.
Methodology
The study used protein and Northern blot analysis to examine the production of TGF-a and TGF-P in cultured keratinocytes and oral squamous cell carcinomas.
Limitations
The study could not conclusively identify TGF-a transcripts in normal adult skin due to low abundance.
Statistical Information
P-Value
0.003
Statistical Significance
p=0.003
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