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Diosgenin Glucoside Inhibits the Progression of Osteosarcoma MG-63 by Regulating the PI3K/AKT/mTOR Pathway
Siyuan Ruan1, Liuwei Gu1, Yuqi Wang1
1Department of Traumatic Orthopedics, Renmin Hospital, Hubei University of Medicine, Shiyan, 442000, P.R. China.
Background:
Trillium tschonoskii Maxim (TTM) exerts antitumor effects on a variety of tumour cells. However, the antitumor mechanism of Diosgenin glucoside (DG) extracted from TTM is not clear.
Objective:
This study aimed to investigate the anti-tumour effects of DG-induced osteosarcoma MG-63 cells and their molecular mechanism.
Methods:
CCK-8 assay, HE staining, and flow cytometry were used to detect the effects of DG on the proliferation, apoptosis, and cell cycle of osteosarcoma cells. Wound healing and Transwell invasion assays were used to observe the effect of DG on the migration and invasion of osteosarcoma cells. The anti-tumour mechanism of DG on osteosarcoma cells was investigated by immunohistochemistry, Western blot, and RT-PCR.
Results:
DG significantly inhibited osteosarcoma cell activity and proliferation, promoted apoptosis and blocked the G2 phase of the cell cycle. Both wound healing and Transwell invasion assays showed that DG inhibited osteosarcoma cell migration and invasion. Immunohistochemical and western blot results showed that DG inhibited the activation of PI3K/AKT/mTOR. We found that DG also significantly downregulated the expression of S6K1 and eIF4F, which might be associated with the inhibition of protein synthesis.
Conclusion:
DG may inhibit proliferation, migration, invasion, and cell cycle G2 phase arrest of osteosarcoma MG-63 cells and promote apoptosis through the PI3K/AKT/mTOR signalling pathway.
Insights
Diosgenin glucoside (DG) from Trillium tschonoskii Maxim inhibits osteosarcoma cell growth, migration, and invasion. DG promotes apoptosis and cell cycle arrest via the PI3K/AKT/mTOR pathway, offering a potential anti-cancer therapeutic strategy.
Area of Science:
- Pharmacology
- Molecular Biology
- Oncology
Background:
- Trillium tschonoskii Maxim (TTM) exhibits antitumor properties.
- The specific antitumor mechanisms of Diosgenin glucoside (DG), a compound from TTM, remain unclear.
Purpose of the Study:
- To investigate the anti-tumor effects of DG on osteosarcoma MG-63 cells.
- To elucidate the molecular mechanisms underlying DG's action in osteosarcoma.
Main Methods:
- Cell proliferation, apoptosis, and cell cycle were assessed using CCK-8, HE staining, and flow cytometry.
- Cell migration and invasion were evaluated through wound healing and Transwell assays.
- Molecular mechanisms were explored via immunohistochemistry, Western blot, and RT-PCR.
Main Results:
- DG significantly inhibited osteosarcoma cell proliferation and activity.
- DG induced apoptosis and G2 phase cell cycle arrest, while suppressing migration and invasion.
- DG downregulated the PI3K/AKT/mTOR signaling pathway, inhibiting S6K1 and eIF4F expression.
Conclusions:
- DG demonstrates significant anti-osteosarcoma effects by inhibiting proliferation, migration, invasion, and promoting apoptosis.
- The PI3K/AKT/mTOR signaling pathway is implicated in DG's anti-tumor activity in osteosarcoma cells.
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