ABSTRACT
The individualization of cancer treatment has brought about revolution in clinical practice. In recent years, EGFR-TKI has shown good anti-tumor activity in non-small cell lung cancer with EGFR positive mutation. Compared with the first-generation EGFR-TKI, the third-generation EGFR-TKI significantly increased the effective rate, progression-free survival and overall survival of advanced non-small cell lung cancer with EGFR mutation, especially the brain metastases. And the third-generation EGFR-TKI also showed the benefits of disease-free survival as the post-operative adjuvant therapy for operable EGFR-mutated non-small cell lung cancer. Moreover, the third-generation EGFR-TKI in combination with radiotherapy showed obvious advantages in the treatment of locally advanced and advanced oligometastatic EGFR-mutated non-small cell lung cancer.
ABSTRACT
OBJECTIVES@#Lung cancer is one of the most common malignant tumors in the world, and its lethality ranks the first among many malignant tumors. For non-small cell lung cancer (NSCLC) patients, due to the high mortality rate, the overall 5-year survival rate is less than 15%. When NSCLC undergoes local invasion, the 5-year survival rate is only 20%, and it is even lower when distant metastasis occurs up to 4%. Almonertinib is an innovative drug independently researched and developed by China with independent intellectual property rights. As an epidermal growth factor receptor tyrosine kinase inhibitor, almonertinib is mainly used for locally advanced or metastatic NSCLC patients with epidermal growth factor receptor (EGFR) T790M mutation. This study aims to investigate the effects of almonertinib on the proliferation, invasion and migration of NSCLC cells in vitro.@*METHODS@#NSCLC cells H1975 and PC-9 were cultured in vitro. The effects of almonertinib on the proliferation, apoptosis, invasion, and migration of H1975 and PC-9 cells were detected by CCK-8 assay, apoptotic assay and Transwell assay. The expression of invasion and migration related proteins was detected by Western blotting.@*RESULTS@#The CCK-8 experiment showed that almonertinib inhibited the proliferation of H1975 and PC-9 cells in a time- and dose-dependent manner. The IC@*CONCLUSIONS@#Almonertinib can inhibit the proliferation, invasion, and migration of NSCLCH1975 and PC-9 cells in vitro and vivo, and promote the apoptosis of H1975 and PC-9 cells. The underlying mechanism may be related to the inhibition of tumor cell epithelial mesenchymal transformation and metalloproteinase expression.