Protease expression in giant cell tumour of bone: A comparative study on feline and human samples

Leonardo Leonardi, Irene Quattrini, Franco Roperto, Maria Serena Benassi

Research output: Contribution to journalArticlepeer-review


Human giant cell tumour of bone (GCTB) is a rare low grade of malignancy tumour with tendency to recur. During tumourigenesis the bone remodeling balance is subverted by the tumour cellular components that interacting with bone matrix induce release of growth factors and cytokines, promoting cell proliferation and bone resorption. The master regulators of this positive feed-back are acid and neutral proteases that destroying extracellular matrix increase osteolysis. In contrast, in cats, very few data are reported on GCTB biological activity. In this study, histological features and metalloproteinase (MMPs) and urokinase plasminogen activator system (uPA) expression were compared in human and feline GCTB and differences in distribution and intensity related to histological pattern and clinical behaviour were determined. In both species, the overexpression of these molecules suggested a strong and complex cross-talk between tumour and microenvironment.

Original languageEnglish
Pages (from-to)310-315
Number of pages6
JournalResearch in Veterinary Science
Issue number2
Publication statusPublished - Oct 2013


  • Bone matrix
  • Cats
  • Giant cell tumour
  • Humans
  • Immunohistochemistry
  • Proteinases

ASJC Scopus subject areas

  • veterinary(all)


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