Transcriptomic signature induced in bone marrow Mesenchymal Stromal Cells (MSC) after interaction with malignant multiple myeloma cells: implications in myeloma progression.

Mesenchymal stromal cells (MSCs) derived from the BM of healthy donors (dMSCs) and myeloma patients (pMSCs) were co-cultured with the model myeloma cell line - MM.1S -, and the gene expression profile of MSCs induced by this interaction was analyzed using high density oligonucleotide microarrays. Deregulated genes in co-culture common to both d/pMSCs revealed functional involvement in tumor microenvironment cross-talk, myeloma growth induction and drug resistance, angiogenesis and signals for osteoclast activation and inhibition of osteoblasts. Additional genes induced by co-culture were exclusively deregulated in pMSCs and were predominantly associated to RNA processing, the ubiquitine-proteasome pathway, regulation of cell cycle and Wnt signaling.

37

Garcia-Gomez A, De Las Rivas J, Ocio EM, Díaz-Rodríguez E, Montero JC, Martín M, Blanco JF, Sanchez-Guijo FM, Pandiella A, San Miguel JF, Garayoa M