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Short-term cultures of clinical tumor material: potential contributions to oncology research
B C Baguley1, E S Marshall, G J Finlay
1Auckland Cancer Society Research Centre, University of Auckland School of Medicine, New Zealand. b.baguley@auckland.ac.nz
Abstract:
The culture of surgical tumor specimens has long been considered as a potential approach to the tailoring of chemotherapy and radiotherapy to the individual patient, and to the development of improved therapy. Recent work highlighting the importance of cell-cell interactions in the growth and survival of cancer tissue, as well the demonstrated importance of drug- or radiation-induced loss of tumor cells (for instance by apoptosis), points to a need to reexamine the question of what information might be derived from such cultures. In this commentary, we consider whether the short-term culture of human tumor tissue as small cellular aggregates, preserving to some extent the three-dimensional organization of tumors in vivo, can be used to obtain information on the behavior of cancer cells before and after therapy. Using [3H]thymidine incorporation as an end-point, we show how the shapes of dose-response curves might be used to estimate two key cytokinetic properties of the cultured cells, proliferation rate, and susceptibility to drug- or radiation-induced cell death. We have illustrated this discussion with our studies of melanoma, ovarian cancer, and lung cancer samples. We consider how application of culture methods may lead not only to the discovery of new antitumor drugs, but also to improved choice of patients' treatment.
Insights
Short-term culture of human tumor tissue aggregates can assess cancer cell proliferation and drug sensitivity. This approach aids in developing new cancer therapies and personalizing patient treatment strategies.
Area of Science:
- Oncology
- Cancer Biology
- Cellular Biology
Background:
- Surgical tumor specimen culture is a potential method for tailoring chemotherapy and radiotherapy.
- Cell-cell interactions and therapy-induced cell death (apoptosis) are crucial in cancer growth and survival.
- Re-evaluation of information obtainable from tumor cultures is needed.
Purpose of the Study:
- To determine if short-term culture of human tumor tissue aggregates can provide insights into cancer cell behavior before and after therapy.
- To assess the utility of these cultures in understanding cancer cell cytokinetics and treatment response.
Main Methods:
- Short-term culture of human tumor tissue as small cellular aggregates, maintaining some in vivo three-dimensional organization.
- [3H]thymidine incorporation as an endpoint to measure cellular activity.
- Analysis of dose-response curves to estimate proliferation rate and susceptibility to cell death.
Main Results:
- Dose-response curve shapes can estimate key cytokinetic properties: proliferation rate and sensitivity to drug- or radiation-induced cell death.
- The method was illustrated using samples from melanoma, ovarian cancer, and lung cancer.
- Cultured tumor aggregates reflect cellular behavior relevant to therapeutic responses.
Conclusions:
- Short-term tumor tissue culture can yield valuable information on cancer cell proliferation and death.
- This approach may facilitate the discovery of novel antitumor drugs.
- Application of these culture methods can improve patient treatment selection and personalization.
