Alteration of osteoclast activity in childhood cancer survivors: Role of iron and of CB2/TRPV1 receptors.

Autor: Rossi F; Department of Woman, Child and General and Specialist Surgery, University of Campania 'Luigi Vanvitelli', Napoli, Italy., Tortora C; Department of Woman, Child and General and Specialist Surgery, University of Campania 'Luigi Vanvitelli', Napoli, Italy., Di Martino M; Department of Woman, Child and General and Specialist Surgery, University of Campania 'Luigi Vanvitelli', Napoli, Italy., Di Paola A; Department of Woman, Child and General and Specialist Surgery, University of Campania 'Luigi Vanvitelli', Napoli, Italy., Di Pinto D; Department of Woman, Child and General and Specialist Surgery, University of Campania 'Luigi Vanvitelli', Napoli, Italy., Marrapodi MM; Department of Woman, Child and General and Specialist Surgery, University of Campania 'Luigi Vanvitelli', Napoli, Italy., Argenziano M; Department of Woman, Child and General and Specialist Surgery, University of Campania 'Luigi Vanvitelli', Napoli, Italy., Pota E; Department of Woman, Child and General and Specialist Surgery, University of Campania 'Luigi Vanvitelli', Napoli, Italy.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2022 Jul 21; Vol. 17 (7), pp. e0271730. Date of Electronic Publication: 2022 Jul 21 (Print Publication: 2022).
DOI: 10.1371/journal.pone.0271730
Abstrakt: Childhood cancer survivors (CCS) are predisposed to the onset of osteoporosis (OP). It is known that iron overload induces osteoclasts (OCs) overactivity and that the iron chelator Deferasirox (DFX) can counteract it. The Cannabinoid Receptor type 2 (CB2) and the transient receptor potential vanilloid type-1 (TRPV1) are potential therapeutic targets for OP. In this study we isolated OCs from peripheral blood of 20 CCS and investigated osteoclast biomarkers expression and iron metabolism evaluating iron release by OCs and the expression of several molecules involved in its regulation. Moreover, we analyzed the effects of CB2 and TRPV1 stimulation in combination with DFX on osteoclast activity and iron metabolism. We observed, for the first time, an osteoclast hyperactivation in CCS suggesting a role for iron in its development. Moreover, we confirmed the well-known role of CB2 and TRPV1 receptors in bone metabolism, suggesting the receptors as possible key biomarkers of bone damage. Moreover, we demonstrated a promising synergism between pharmacological compounds, stimulating CB2 or inhibiting/desensitizing TRPV1 and DFX, in counteracting osteoclast overactivity in CCS to improve their quality of life.
Competing Interests: No authors have competing interests.
Databáze: MEDLINE
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