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Updated: Jun 15, 2026

Radiosensitivity of Cancer Stem Cells in Lung Cancer Cell Lines
Published on: August 21, 2019
Potential targets for improving radiosensitivity of breast tumor-initiating cells
Wei Xu1, Bisrat G Debeb, Lara Lacerda
1Division of Radiation Oncology, University of Texas M.D. Anderson Cancer Center, Houston, Texas, USA.
Abstract:
Recent studies have suggested that a specific small population of cells termed tumor-initiating cells (TICs) may be intrinsically resistant to therapy including radiation, and may therefore be the primary mediators of recurrence. Numerous targets are being explored using multiple approaches for their involvement in the self-renewal or survival as well as radioresistance of breast TICs. These studies will provide a broad range of compounds to be tested and to develop novel TIC radiosensitizers that will improve clinical outcome and decrease recurrence of cancer after radiation. In this review we will discuss recent efforts to identify and target these cells to selectively radiosensitize them with novel agents, as well as the TIC radiosensitizing potential of current therapies already in clinical use.
Insights
Tumor-initiating cells (TICs) resist radiation therapy, driving cancer recurrence. Researchers are exploring novel radiosensitizers to target these cells, aiming to improve patient outcomes and reduce cancer recurrence after radiation treatment.
Area of Science:
- Oncology
- Cancer Biology
- Radiation Oncology
Background:
- A subset of cells, tumor-initiating cells (TICs), are implicated in therapy resistance and cancer recurrence.
- Breast cancer TICs are a focus due to their potential role in radioresistance and survival.
Purpose of the Study:
- To review current strategies for identifying and targeting breast cancer TICs.
- To discuss novel agents and existing therapies for radiosensitizing TICs.
- To explore methods for improving clinical outcomes and reducing cancer recurrence post-radiation.
Main Methods:
- Literature review of recent studies on TICs and radiosensitization.
- Exploration of various targets and therapeutic approaches for TICs.
- Analysis of novel compounds and current clinical therapies for TIC radiosensitization.
Main Results:
- Numerous targets are under investigation for their role in TIC self-renewal, survival, and radioresistance.
- Development of novel radiosensitizers is ongoing to improve therapeutic efficacy.
- Current therapies are being evaluated for their potential to radiosensitize TICs.
Conclusions:
- Targeting TICs is a promising strategy to overcome therapy resistance and prevent cancer recurrence.
- Novel radiosensitizers and repurposed existing therapies hold potential for enhancing radiation treatment outcomes.
- Further research is crucial to translate these findings into effective clinical applications for breast cancer patients.
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