- PII
- S19982860S0132342325050204-1
- DOI
- 10.7868/S1998286025050204
- Publication type
- Article
- Status
- Published
- Authors
- Volume/ Edition
- Volume 51 / Issue number 5
- Pages
- 953-965
- Abstract
- Lung adenocarcinoma is a malignant tumor, which is the most common type of non-small cell lung cancer. Low efficiency of standard methods of treatment of lung adenocarcinoma with mutation of the tumor suppressor gene is a serious problem in clinical practice. Search and improvement of new therapeutic approaches to this disease remains an urgent task of modern biomedicine. The aim of the work was to create an model of lung cancer based on the LLC1 cell line with knockout of the gene to assess the sensitivity of mutant cells to various types of radiation therapy, including irradiation with photons, protons and neutrons. The main methods used were CRISPR/Cas9 genome editing technologies to obtain mutant clones, laser cell sorting, PCR analysis to confirm the deletion, as well as assessment of viability, proliferation (metabolic tests, marker expression), apoptosis induction (annexin V-PI method) and gene expression after cell irradiation with a dose of 2 Gy. As a result, heterozygous mutant lines LLC1-STK11-Mut were obtained. Cell irradiation revealed that in mutant cells, radio-induced growth stimulation persisted longer than in wild-type cells, and a significant increase in the proportion of late apoptotic and necrotic cells was observed. At the same time, expression temporarily decreased after irradiation, but quickly recovered in mutant cells, which indicates their higher radioresistance. Unlike wild-type cells, the expression level of the gene in mutant cells did not change significantly after irradiation. Thus, the mutation contributes to the formation of radioresistance in tumor cells by triggering various adaptation mechanisms. The obtained model can be used for further study of radioresistance and development of new approaches to the therapy of tumors with mutation.
- Keywords
- аденокарцинома легкого серин/треониновая киназа 11 (STK11) адронная терапия терапия частицами иммунотерапия рака
- Date of publication
- 01.05.2025
- Year of publication
- 2025
- Number of purchasers
- 0
- Views
- 4
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