Xinfeng Wei, Junxuan Yi, Citong Zhang, Mingwei Wang, Rui Wang, Weiqiang Xu, Mingqi Zhao, Mengdie Zhao, Teng Yang, Wei Wei, Shunzi Jin, Hui Gao
Radiation therapy has been a critical and effective treatment for cancer. However, not all cells are destroyed by radiation due to the presence of tumor cell radioresistance. In the current study, we investigated the effect of low-dose radiation (LDR) on the tumor suppressive effect of high-dose radiation (HDR) and its mechanism from the perspective of tumor cell death mode and DNA damage repair, aiming to provide a foundation for improving the efficacy of clinical tumor radiotherapy. We found that LDR pre-irradiation strengthened the HDR-inhibited A549 cell proliferation, HDR-induced apoptosis, and G2 phase cell cycle arrest under co-culture conditions...
2024: Dose-response: a Publication of International Hormesis Society