Melanoma bone metastasis-induced osteocyte ferroptosis via the HIF1α-HMOX1 axis

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Yewei Jia - , Universitätsklinikum der Friedrich-Alexander-Universität Erlangen-Nürnberg (Autor:in)
  • Rui Li - , Renji Hospital (Autor:in)
  • Yixuan Li - , Universitätsklinikum der Friedrich-Alexander-Universität Erlangen-Nürnberg (Autor:in)
  • Katerina Kachler - , Universitätsklinikum der Friedrich-Alexander-Universität Erlangen-Nürnberg (Autor:in)
  • Xianyi Meng - , Universitätsklinikum der Friedrich-Alexander-Universität Erlangen-Nürnberg (Autor:in)
  • Andreas Gießl - , Universitätsklinikum der Friedrich-Alexander-Universität Erlangen-Nürnberg (Autor:in)
  • Yi Qin - , Universitätsklinikum der Friedrich-Alexander-Universität Erlangen-Nürnberg (Autor:in)
  • Fulin Zhang - , Universitätsklinikum der Friedrich-Alexander-Universität Erlangen-Nürnberg (Autor:in)
  • Ning Liu - , Universitätsklinikum der Friedrich-Alexander-Universität Erlangen-Nürnberg (Autor:in)
  • Darja Andreev - , Center for Regenerative Therapies Dresden (CRTD), Universitätsklinikum der Friedrich-Alexander-Universität Erlangen-Nürnberg (Autor:in)
  • Georg Schett - , Universitätsklinikum der Friedrich-Alexander-Universität Erlangen-Nürnberg (Autor:in)
  • Aline Bozec - , Universitätsklinikum der Friedrich-Alexander-Universität Erlangen-Nürnberg (Autor:in)

Abstract

Osteocytes are the main cells in mineralized bone tissue. Elevated osteocyte apoptosis has been observed in lytic bone lesions of patients with multiple myeloma. However, their precise contribution to bone metastasis remains unclear. Here, we investigated the pathogenic mechanisms driving melanoma-induced osteocyte death. Both in vivo models and in vitro assays were combined with untargeted RNA sequencing approaches to explore the pathways governing melanoma-induced osteocyte death. We could show that ferroptosis is the primary mechanism behind osteocyte death in the context of melanoma bone metastasis. HMOX1 was identified as a crucial regulatory factor in this process, directly involved in inducing ferroptosis and affecting osteocyte viability. We uncover a non-canonical pathway that involves excessive autophagy-mediated ferritin degradation, highlighting the complex relationship between autophagy and ferroptosis in melanoma-induced osteocyte death. In addition, HIF1α pathway was shown as an upstream regulator, providing a potential target for modulating HMOX1 expression and influencing autophagy-dependent ferroptosis. In conclusion, our study provides insight into the pathogenic mechanisms of osteocyte death induced by melanoma bone metastasis, with a specific focus on ferroptosis and its regulation. This would enhance our comprehension of melanoma-induced osteocyte death.

Details

OriginalspracheEnglisch
Aufsatznummer9
FachzeitschriftBone research
Jahrgang13
Ausgabenummer1
PublikationsstatusVeröffentlicht - 16 Jan. 2025
Peer-Review-StatusJa

Externe IDs

PubMedCentral PMC11735842
Scopus 85218273908

Schlagworte

Schlagwörter

  • Ferroptosis, Hypoxia-Inducible Factor 1, alpha Subunit/metabolism, Osteocytes/pathology, Melanoma/pathology, Bone Neoplasms/secondary, Heme Oxygenase-1/metabolism, Cell Line, Tumor, Autophagy, Signal Transduction