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DNA index as prognostic factor in breast cancer
J Rzymowska1, J Skierski, L Kurylcio
1Department of Cell Biology, Maria Sklodowska-Curie University, Lublin, Poland.
Neoplasma
|January 1, 1995
Summary
Enzymatic dissociation enables breast cancer cell culture for analysis. Aneuploid DNA content and higher S-phase fractions indicate more aggressive and metastatic tumors, serving as key prognostic indicators.
Area of Science:
- Oncology
- Cell Biology
- Genetics
Background:
- Mechanical dissociation hinders short-term culture and cytometric analysis of breast cancer cells.
- Enzymatic dissociation is crucial for preparing viable breast cancer cells for molecular analysis.
Purpose of the Study:
- To evaluate DNA content and S-phase fraction in enzymatically dissociated primary and metastatic breast cancer cells.
- To determine the prognostic value of nuclear DNA content and S-phase fraction in breast cancer.
Main Methods:
- Enzymatic dissociation of breast cancer cells for cell culture.
- Flow cytometry analysis of DNA content and S-phase fraction.
Main Results:
- Most primary and metastatic breast cancer cells were aneuploid.
- 74% of invasive and 62% of primary breast cancers exhibited aneuploid DNA content.
- 22% of metastatic and 37% of primary tumors showed diploid or near-diploid stemlines.
- Higher DNA index and S-phase fractions were observed in aggressive and metastatic tumors.
Conclusions:
- Nuclear DNA content and S-phase fraction are valuable prognostic indicators in breast cancer.
- Enzymatic dissociation is a suitable method for preparing breast cancer cells for prognostic analysis.
