Dithiolation indolizine exerts viability suppression effects on A549 cells via triggering intrinsic apoptotic pathways and inducing G2/M phase arrest - 19/12/20
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Graphical abstract |
Schematic diagram of activated signaling pathways in A549 cells after the treatment of C8. Caspase 12 (Cas 12), Cleaved-Caspase 3 (C-Cas 3), Cleaved-PARP (C-PARP).
Highlights |
• | Compound 8 suppresses A549 cells by inducing apoptosis and cycle arrest. |
• | Compound 8 triggers p53 pathway, intrinsic apoptotic pathways and inhibits Akt phosphorylation. |
• | Our research findings provide potential candidates for therapy of NSCLC. |
Abstract |
Indolizine derivatives have been reported for the treatment of numerous diseases. However, few studies were carried out for non-small cell lung cancer (NSCLC). We synthesized series of indolizine compounds. The results of MTT assay showed compound 8 (C8) markedly inhibited the proliferation of A549 cells, however, C8 (15, 30 μg/mL) had little cytotoxicity in other cell lines (SH-SY5Y, HepG2, and BEAS-2B cells), Hoechst staining and JC-1 staining showed that C8 induced changes in the nucleus morphology, increased the loss in mitochondrial membrane potential in A549 cells. The results of flow cytometry manifested that cell cycle of the cells was arrested in the G2 / M phase by C8, ROS levels and the proportion of apoptosis of cells increased. We performed western blotting analysis to detect the expression levels of apoptosis and cycle-related proteins. These results validated that the apoptosis of cells was triggered by endoplasmic reticulum stress (ERS) and the PI3K/Akt-mediated mitochondrial pathway collaboratively. Besides, the utilization of PI3K/Akt inhibitors and p53 inhibitors further proves the above argument and C8-induced cycle arrest of A549 cells is majorly regulated by p53. C8 induced the accumulation of ROS contents involved in mitochondrial damage. The proliferation of A549 cells was inhibited after treatment with the compound, which induced apoptosis and cycle arrest of cells. It is suggested that C8(dithiolation indolizine) is a potential candidate compound against non-small cell lung cancer.
Le texte complet de cet article est disponible en PDF.Keywords : A549 cells, Apoptosis, G2/M arrest, Endoplasmic reticulum stress (ERS), Mitochondrial pathway
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Vol 133
Article 110961- janvier 2021 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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