Targeting cancer stem cells: protons versus photons

Area of Science:

• Oncology
• Radiation Oncology
• Cancer Stem Cell Biology

Background:

• Cancer stem cells (CSCs) are crucial for tumor recurrence and are resistant to conventional photon radiotherapy.
• Proton beam therapy (PBT) is increasingly used due to its dosimetric advantages.

Purpose of the Study:

• To explore the potential biological advantages of PBT over photon therapy in eliminating CSCs.
• To review preclinical data comparing the effects of protons and photons on CSCs.

Main Methods:

• Review of preclinical studies comparing proton and photon irradiation effects on cancer stem cells.

Main Results:

• Preclinical data suggest differences in biological effects between protons and photons on CSCs.
• Protons may offer potential advantages in eliminating CSCs compared to photons.

Conclusions:

• PBT might have biological benefits for targeting CSCs, warranting further investigation.
• Understanding the mechanisms of proton interactions with CSCs is key for optimizing PBT.
• Clinical exploitation of PBT's potential CSC-eliminating effects requires further research.