Radiosensitivity of Head and Neck Tumor Cells and Fibroblasts
Author Information
Author(s): Stausbøl-Grøn B, Bentzen S M, Jørgensen K E, Nielsen O S, Bundgaard T, Overgaard J
Primary Institution: Danish Cancer Society, Department of Experimental Clinical Oncology, Aarhus University Hospital, Denmark
Hypothesis
The study aims to characterize the variation in cellular radiosensitivities in head and neck squamous cell carcinomas and test for correlations with clinical data.
Conclusion
The study found no strong correlation between the radiosensitivity of tumor cells and fibroblasts, and tumor cell radiosensitivity decreased with increasing histopathological grade.
Supporting Evidence
- The median overall SF2 was 0.47 with a range of 0.24–0.96.
- The majority of colonies obtained were fibroblast marker-positive.
- The proportion of tumor marker-positive colonies ranged from 1 to 88% with a median of 15%.
- Overall SF2 was significantly correlated with the SF2 of fibroblasts (p=0.006).
- Tumor cell radiosensitivity decreased with increasing grade of histopathological differentiation (p=0.012).
Takeaway
Researchers looked at how sensitive head and neck cancer cells are to radiation and found that tumor cells and fibroblasts don't really affect each other's sensitivity.
Methodology
Cellular radiosensitivities were assessed using the modified Courtenay–Mills soft agar clonogenic assay combined with immunocytochemical analysis.
Limitations
The study did not find significant correlations with various clinical characteristics such as T- and N-category, stage, tumor size, sex, and age.
Participant Demographics
The study included tumor biopsies from 71 patients, with 63 from primary tumors and 8 from recurrences.
Statistical Information
P-Value
p=0.006 for correlation with fibroblasts, p=0.012 for correlation with histopathological differentiation
Confidence Interval
95% CI [–0.19, 0.30]
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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