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Giallongo C, Tibullo D, Parrinello NL, La Cava P, Di Rosa M, Bramanti V, Di Raimondo C, Conticello C, Chiarenza A, Palumbo GA, Avola R, Romano A, Di Raimondo F. Granulocyte-like myeloid derived suppressor cells (G-MDSC) are increased in multiple myeloma and are driven by dysfunctional mesenchymal stem cells (MSC). Oncotarget 2018; 7:85764-85775. [PMID: 26967390 PMCID: PMC5349872 DOI: 10.18632/oncotarget.7969] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 02/05/2016] [Indexed: 01/06/2023] Open
Abstract
Granulocytic-Myeloid-derived suppressor cells (G-MDSC) are increased in Multiple Myeloma (MM) patients but the mechanisms of G-MDSC generation are still unknown. There are many evidences of the role of mesenchymal stem cells (MSC) in promoting MM cell growth, survival and drug-resistance. We here used a specific experimental model in vitro to evaluate the ability of MSC to induce G-MDSC. We found that although MSC derived from healthy donors (HD), MGUS and MM were able to generate the same amount of MDSC, only MM-MSC-educated G-MDSC exhibited suppressive ability. In addition, in comparison with MSC derived from HD, MM-MSC produce higher amount of immune-modulatory factors that could be involved in MDSC induction. Compared to G-MDSC obtained from co-culture models with MSC from healthy subjects, both MGUS and MM-MSC-educated G-MDSC showed increase of immune-modulatory factors. However, only MM-MSC educated G-MDSC 1) up-regulated immune-suppressive factors as ARG1 and TNFα, 2) expressed higher levels of PROK2, important in angiogenesis and inflammatory process, and 3) showed ability to digest bone matrix.Our data demonstrate that MM-MSC are functionally different from healthy subjects and MGUS-MSC, supporting an evolving concept regarding the contribution of MM-MSC to tumor development and progression.
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Affiliation(s)
- Cesarina Giallongo
- Division of Hematology, A.O.U. Policlinico-OVE, Catania, University of Catania, Italy.,Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Daniele Tibullo
- Division of Hematology, A.O.U. Policlinico-OVE, Catania, University of Catania, Italy.,Department of Biological, Geological and Environmental Sciences, University of Catania, Catania, Italy
| | | | - Piera La Cava
- Division of Hematology, A.O.U. Policlinico-OVE, Catania, University of Catania, Italy
| | - Michelino Di Rosa
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Vincenzo Bramanti
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Cosimo Di Raimondo
- Division of Hematology, A.O.U. Policlinico-OVE, Catania, University of Catania, Italy
| | - Concetta Conticello
- Division of Hematology, A.O.U. Policlinico-OVE, Catania, University of Catania, Italy
| | - Annalisa Chiarenza
- Division of Hematology, A.O.U. Policlinico-OVE, Catania, University of Catania, Italy
| | - Giuseppe A Palumbo
- Division of Hematology, A.O.U. Policlinico-OVE, Catania, University of Catania, Italy
| | - Roberto Avola
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Alessandra Romano
- Division of Hematology, A.O.U. Policlinico-OVE, Catania, University of Catania, Italy
| | - Francesco Di Raimondo
- Division of Hematology, A.O.U. Policlinico-OVE, Catania, University of Catania, Italy
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