Sensitivity to Chemoradiation Effects of Human Non-Small Cell Lung Cancer Cells Surviving Fractionated Irradiation with a Total Dose of 20 Gy
- Авторлар: Molodtsova D.V.1,2, Kotenkova E.A.3, Polishchuk E.K.4, Osipov A.A.2, Guryev D.V.1, Chigasova A.K.1,2,5, Vorobyeva N.Y.1,2, Osipov A.N.1,2,3
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Мекемелер:
- A.I. Burnazyan Federal Medical Biophysical Center
- N.N. Semenov Federal Research Center for Chemical Physics
- Moscow Institute of Physics and Technology (National Research University)
- Experimental clinic and research laboratory for bioactive substances of animal origin, V.M. Gorbatov Federal Research Center for Food Systems
- N.M. Emanuel Institute for Biochemical Physics
- Шығарылым: Том 70, № 4 (2025)
- Беттер: 10-15
- Бөлім: Radiation Biology
- URL: https://journals.rcsi.science/1024-6177/article/view/360383
- DOI: https://doi.org/10.33266/1024-6177-2025-70-4-10-15
- ID: 360383
Дәйексөз келтіру
Толық мәтін
Аннотация
Objective: To obtain human non-small cell lung cancer (NSCLC) cells that survived and showed stable growth after fractionated exposure to X-rays at a total dose of 20 Gy and to evaluate their sensitivity to additional irradiation and cisplatin.
Material and methods: The NSCLC cell line A549 was used in the study, and it was irradiated in the fractionated mode (5 fractions of 4 Gy) to obtain a subline of surviving cells – A549IR. A549 and A549IR cells were subjected to testing exposure to X-rays or cisplatin. Then, proliferative activity, 2D migration capacity and the efficiency of DNA double-strand break (DSB) repair were analyzed using a quantitative assessment of residual foci of the γH2AX and 53BP1 proteins.
Results: The study yielded NSCLC cells that survived and showed stable growth after fractionated X-ray irradiation with a total dose of 20 Gy. The resulting A549IR cells had altered morphology, decreased proliferative activity, and increased migration capacity. Analysis of residual 53BP1 foci after test irradiation with a dose of 6 Gy indicates increased efficiency of repair of radiation-induced DNA DSBs. It was also found that A549IR cells are more resistant to cisplatin.
Conclusion: Overall, the study results show that combination CRT for the treatment of NSCLC should be prescribed with caution if studies based on the animal model support current conclusions. NSCLC cells that have survived IR exposure may acquire resistance to cisplatin. To select the appropriate therapy, it is important to assess both the existing radio- and chemo-resistance of tumor cells and their resistance to therapeutic effects that developed during treatment.
Негізгі сөздер
Авторлар туралы
D. Molodtsova
A.I. Burnazyan Federal Medical Biophysical Center; N.N. Semenov Federal Research Center for Chemical Physics
Email: dmolodtsova@gmail.com
Moscow, Russia; Moscow, Russia
E. Kotenkova
Moscow Institute of Physics and Technology (National Research University)
Email: dmolodtsova@gmail.com
Moscow Region, Dolgoprudny, Russia
E. Polishchuk
Experimental clinic and research laboratory for bioactive substances of animal origin, V.M. Gorbatov Federal Research Center for Food Systems
Email: dmolodtsova@gmail.com
Moscow, Russia
A. Osipov
N.N. Semenov Federal Research Center for Chemical Physics
Email: dmolodtsova@gmail.com
Moscow, Russia
D. Guryev
A.I. Burnazyan Federal Medical Biophysical Center
Email: dmolodtsova@gmail.com
Moscow, Russia
A. Chigasova
A.I. Burnazyan Federal Medical Biophysical Center; N.N. Semenov Federal Research Center for Chemical Physics; N.M. Emanuel Institute for Biochemical Physics
Email: dmolodtsova@gmail.com
Moscow, Russia; Moscow, Russia; Moscow, Russia
N. Vorobyeva
A.I. Burnazyan Federal Medical Biophysical Center; N.N. Semenov Federal Research Center for Chemical Physics
Email: dmolodtsova@gmail.com
Moscow, Russia; Moscow, Russia
A. Osipov
A.I. Burnazyan Federal Medical Biophysical Center; N.N. Semenov Federal Research Center for Chemical Physics; Moscow Institute of Physics and Technology (National Research University)
Email: dmolodtsova@gmail.com
Moscow, Russia; Moscow, Russia; Moscow Region, Dolgoprudny, Russia
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