Piperlongumine inhibits glioblastoma proliferation by inducing ferroptosis

Area of Science:

• Biochemistry
• Oncology
• Molecular Biology

Background:

• Glioblastoma multiforme (GBM) is an aggressive brain tumor with limited treatment options.
• Piperlongumine is a natural compound with potential anti-cancer properties.
• Understanding the mechanisms of novel therapeutic agents is crucial for GBM treatment.

Purpose of the Study:

• To investigate the effects of Piperlongumine on Glioblastoma multiforme (GBM) cells.
• To elucidate the mechanism by which Piperlongumine affects GBM proliferation.
• To evaluate the in vivo efficacy of Piperlongumine against GBM.

Main Methods:

• Assessed Piperlongumine's impact on glioma cell viability and proliferation.
• Analyzed mitochondrial structure and cell proliferation capacity.
• Quantified reactive oxygen species, lipid peroxidation products, and glutathione levels.
• Detected ferroptosis-related proteins and nuclear factor erythroid 2-related factor 2 (Nrf2) expression.
• Utilized in vivo subcutaneous tumor models in nude mice.

Main Results:

• Piperlongumine significantly inhibited GBM cell viability and proliferation.
• Ferroptosis inhibitors partially restored cell proliferation, indicating Piperlongumine induces ferroptosis.
• Overexpression of Nrf2 partially reversed Piperlongumine-induced ferroptosis.
• Piperlongumine demonstrated significant in vivo tumor inhibition, which was reversible by Fer-1.

Conclusions:

• Piperlongumine exhibits anti-proliferative effects on Glioblastoma multiforme by inducing ferroptosis.
• The findings support Piperlongumine as a potential therapeutic agent for GBM.
• Targeting ferroptosis pathways presents a promising strategy for GBM treatment.