Cell Kinetic Analysis of Murine Squamous Cell Carcinomas
Author Information
Author(s): S. Schultz-Hector, A.C. Begg, I. Hofland, J. Kummermehr, M. Sund
Primary Institution: GSF Institut für Strahlenbiologie
Hypothesis
Can in vitro labelling of tumour biopsies accurately measure DNA synthesis times compared to in vivo labelling?
Conclusion
The study found that in vitro labelling does not accurately measure DNA synthesis times in fresh tumour explants.
Supporting Evidence
- Labelling indices were not significantly different between in vitro and in vivo methods.
- Double labelling in vitro showed that cells did not take up the second label, indicating a failure of cycle progression.
- Intratumoural variations in labelling indices and DNA synthesis times were observed, particularly in larger tumours.
Takeaway
Researchers wanted to see if they could measure how fast cancer cells grow in lab samples, but they found it was really hard to do that accurately.
Methodology
The study compared flow cytometry and immunohistochemistry methods for measuring cell proliferation in murine squamous cell carcinomas using both in vivo and in vitro labelling techniques.
Limitations
In vitro labelling did not allow for accurate measurement of DNA synthesis times due to cell cycle progression issues.
Want to read the original?
Access the complete publication on the publisher's website