Aberrant sphingomyelin31 p-nmr signatures in giant cell tumour of bone

Tayde Quiroz-Acosta, Yazmin Montserrat Flores-Martinez, Elvia Becerra-Martínez, Elizabeth Pérez-Hernández, Nury Pérez-Hernández, Angel Ernesto Bañuelos-Hernández

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

An understanding of the biochemistry of the giant cell tumour of bone (GCTB) provides an opportunity for the development of prognostic markers and identification of therapeutic targets. Based on metabolomic analysis, we proposed glycero-phospholipid metabolism as the altered pathway in GCTB., The objective of this study was to identify these altered metabolites. Using phosphorus-31 nuclear magnetic resonance spectroscopy (31P-NMR), sphingomyelin was determined to be the most dysregulated phospholipid in tissue samples from six patients with GCTB. Enzymes related to its biosynthesis and hydrolysis were examined using immunodetection techniques. High expression of sphingomyelin synthases 1 and 2, but low expression of neutral sphingomyelinase 2 (nSMase2) was found in GCTB tissues compared to non-neoplastic bone tissues. Sphingomyelin/ceramide biosynthesis is dysregulated in GCTB due to alterations in the expression of SMS1, SMS2, and nSMase2.

Original languageEnglish
Pages (from-to)717-724
Number of pages8
JournalBiochemistry and Cell Biology
Volume99
Issue number6
DOIs
StatePublished - 2021

Keywords

  • 31P-NMR
  • Bone cancer
  • Ceramide
  • Giant cell tumour of bone
  • Giant cell-rich bone tumours
  • Glycerophospholipids
  • Neutral sphingomyelinase 2
  • Sphingomyelin
  • Sphingomyelin synthase
  • Sphingomyelinase

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