A new study published in the Journal of Cellular and Molecular Medicine finds that cannabidiol (CBD) may help protect human cartilage cells from ferroptosis, a specific type of cell death linked to the development of osteoarthritis and other orthopedic diseases.
Researchers at Paracelsus Medical University evaluated the effects of CBD on human articular chondrocytes exposed to ferroptosis inducers such as RSL3, erastin, FINO2, and FIN56. These compounds reduced cell viability in both established chondrocyte cell lines and primary chondrocytes, confirming their ability to induce ferroptosis.
However, when the cells were co-treated with CBD, cell viability was restored in a dose-dependent manner, with effective concentrations ranging from 10 nanomolar to 1 micromolar.
The study also found that CBD was able to restore activity of glutathione peroxidase 4 (GPX4), a critical antioxidant enzyme involved in cellular defense, especially when paired with the ferroptosis inducers IKE and RSL3.
These findings highlight CBD’s previously unreported ability to inhibit ferroptosis in human cartilage cells, suggesting the compound may hold therapeutic potential in treating or preventing joint diseases characterized by oxidative stress and iron imbalance, including osteoarthritis.
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