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Nerolidol induced apoptosis via PI3K/JNK regulation through cell cycle arrest in MG-63 osteosarcoma cells
Yang Yu1, Periyannan Velu2, Yulong Ma3
1Department of Traumatic Joint Surgery, 3201 Hospital, Hanzhong, China.
Abstract:
The aim of the present study was to determine the cell proliferation, apoptotic pathway analysis through protein, mRNA and cell cycle arrest mechanism in nerolidol induced osteosarcoma MG-63 cells. The osteosarcoma MG-63 cells were treated with various doses of nerolidol (15 and 20 μM/ml) for 24 h. Cell proliferation was examined using assist method of MTT assay, fixed the IC50 value of nerolidol 15 μM/ml. Reactive oxygen species (ROS) generation was analyzed by DCFH-DA dye, mitochondrial potential detected by Rh-123 dye, apoptotic morphological changes identified by AO/EtBr, PI, DAPI staining, and cell adhesion were detected by using fluorescence microscope. Cell proliferation, and apoptotic molecular protein and mRNA expressions such as ERK, P38, p-PI3K, p-JNK, Bcl-2, JNK, p-P38, cyclin-D1, and Bax were analyzed in osteosarcoma MG-63 cells. Nerolidol significantly suppressed the osteosarcoma cells progression in a dose dependent manner (p < .05) evident in the oxidative stress induction and apoptotic morphological changes. Nerolidol also regulated the protein PI3K/AKT mechanistically via induction of apoptosis Nerolidol suppresses osteosarcoma MG-63 cells by PI3K/AKT by cell cycle arrest at early phase of G0/G1. To sum up, nerolidol suppressed the growth of bone cancer cells and can be finally targeted as a potent drug for analyzing its chemotherapeutic effects in future.
Insights
Nerolidol effectively inhibited osteosarcoma cell growth by inducing oxidative stress and apoptosis. This natural compound also caused cell cycle arrest, showing potential as a bone cancer therapeutic.
Area of Science:
- Biochemistry
- Molecular Biology
- Cancer Research
Background:
- Osteosarcoma is a primary bone cancer with limited treatment options.
- Natural compounds are being investigated for their anti-cancer properties.
Purpose of the Study:
- To investigate the effects of nerolidol on osteosarcoma MG-63 cells.
- To analyze cell proliferation, apoptosis, and cell cycle arrest mechanisms induced by nerolidol.
Main Methods:
- Osteosarcoma MG-63 cells were treated with nerolidol (15 and 20 μM/ml).
- Assays included MTT for proliferation, DCFH-DA for ROS, Rh-123 for mitochondrial potential, AO/EtBr, PI, DAPI staining for apoptosis, and Western blot/RT-PCR for protein/mRNA expression.
- Cell cycle analysis was performed using flow cytometry.
Main Results:
- Nerolidol significantly suppressed osteosarcoma cell proliferation in a dose-dependent manner.
- Nerolidol induced oxidative stress, altered mitochondrial potential, and triggered apoptotic morphological changes.
- Nerolidol regulated apoptosis-related proteins (Bax, Bcl-2) and kinases (ERK, P38, JNK) and arrested cells in the G0/G1 phase via the PI3K/AKT pathway.
Conclusions:
- Nerolidol exhibits potent anti-cancer effects against osteosarcoma cells.
- Nerolidol acts through induction of oxidative stress, apoptosis, and cell cycle arrest.
- Nerolidol shows promise as a potential chemotherapeutic agent for bone cancer.
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