1. Trilobolide-6-O-isobutyrate from Sphagneticola trilobata acts by inducing oxidative stress, metabolic changes and apoptosis-like processes by caspase 3/7 activation of human lung cancer cell lines.
- Author
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Concato-Lopes VM, Gonçalves-Lens MD, Tomiotto-Pellissier F, Detoni MB, Cruz EMS, Bortoleti BTDS, Carloto ACM, Rodrigues ACJ, Silva TF, Siqueira EDS, de Matos RLN, Alves Cardoso IL, Conchon-Costa I, Lazarin-Bidóia D, Arakawa NS, Dekker RFH, Mantovani MS, and Pavanelli WR
- Subjects
- Tracheophyta chemistry, Cell Line, Tumor, Humans, A549 Cells, THP-1 Cells, Toxicity Tests, Cell Movement drug effects, Caspase 3 metabolism, Caspase 7 metabolism, Apoptosis drug effects, Carcinoma, Non-Small-Cell Lung drug therapy, Animals, Sesquiterpenes pharmacology, Butyrates pharmacology, Lung Neoplasms drug therapy
- Abstract
Background: Lung cancer, a chronic and heterogeneous disease, is the leading cause of cancer-related death on a global scale. Presently, despite a variety of available treatments, their effectiveness is limited, often resulting in considerable toxicity and adverse effects. Additionally, the development of chemoresistance in cancer cells poses a challenge. Trilobolide-6-O-isobutyrate (TBB), a natural sesquiterpene lactone extracted from Sphagneticola trilobata, has exhibited antitumor effects. Its pharmacological properties in NSCLC lung cancer, however, have not been explored., Purpose: This study evaluated the impact of TBB on the A549 and NCI-H460 tumor cell lines in vitro, examining its antiproliferative properties and initial mechanisms of cell death., Methods: TBB, obtained at 98 % purity from S. trilobata leaves, was characterized using chromatographic techniques. Subsequently, its impact on inhibiting tumor cell proliferation in vitro, TBB-induced cytotoxicity in LLC-MK2, THP-1, AMJ2-C11 cells, as well as its effects on sheep erythrocytes, and the underlying mechanisms of cell death, were assessed., Results: In silico predictions have shown promising drug-likeness potential for TBB, indicating high oral bioavailability and intestinal absorption. Treatment of A549 and NCI-H460 human tumor cells with TBB demonstrated a direct impact, inducing significant morphological and structural alterations. TBB also reduced migratory capacity without causing toxicity at lower concentrations to LLC-MK2, THP-1 and AMJ2-C11 cell lines. This antiproliferative effect correlated with elevated oxidative stress, characterized by increased levels of ROS, superoxide anion radicals and NO, accompanied by a decrease in antioxidant markers: SOD and GSH. TBB-stress-induced led to changes in cell metabolism, fostering the accumulation of lipid droplets and autophagic vacuoles. Stress also resulted in compromised mitochondrial integrity, a crucial aspect of cellular function. Additionally, TBB prompted apoptosis-like cell death through activation of caspase 3/7 stressors., Conclusion: These findings underscore the potential of TBB as a promising candidate for future studies and suggest its viability as an additional component in the development of novel anticancer drugs prototypes., Competing Interests: Declaration of competing interest The authors declare that they have no competing interests., (Copyright © 2024. Published by Elsevier GmbH.)
- Published
- 2024
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