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Research

TUMOUR MICROENVIRONMENT AND THE BEHAVIOUR OF BONE CANCER

The European Orthopaedic Research Society (EORS) 2018 Meeting, PART 3, Galway, Ireland, September 2018.



Abstract

The initiation and progression of malignant tumors are supported by their microenvironment: cancer cells per se cannot explain growth and formation of the primary or metastasis, and a combination of proliferating tumor cells, cancer stem cells, immune cells, mesenchymal stromal cells and/or cancer-associated fibroblasts all contribute to the tumor bulk. The interaction between these multiple players, under different microenvironmental conditions of biochemical and physical stimuli (i.e. oxygen tension, pH, matrix mechanics), regulates the production and biological activity of several soluble factors, extracellular matrix components, and extracellular vesicles that are needed for growth, maintenance, chemoresistance and metastatization of cancer. Both in osteosarcoma and bone metastases from carcinomas this aspect has been only recently explored. In this lecture, I will discuss the role of tumor microenvironment, with a particular focus on the mesenchymal stroma, contributing to bone tumor progression through inherent. The most recent advances in the molecular cues triggered by cytokines, soluble factors, and metabolites that are partially beginning to unravel the axis between stromal elements of mesenchymal origin and bone cancer cells, under different microenvironmental conditions, will be reviewed providing insights likely to be used for novel therapeutic approaches.


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