Modeling multiple myeloma-bone marrow interactions and response to drugs in a 3d surrogate microenvironment

D Belloni, S Heltai, M Ponzoni, A Villa, B Vergani, L Pecciarini, M Marcatti, S Girlanda, G Tonon, F Ciceri, F Caligaris-Cappio, M Ferrarini, E Ferrero

Research output: Contribution to journalArticle

Abstract

Multiple myeloma develops primarily inside the bone marrow microenvironment, that confers pro-survival signals and drug resistance. 3D cultures that reproduce multiple myeloma-bone marrow interactions are needed to fully investigate multiple myeloma pathogenesis and response to drugs. To this purpose, we exploited the 3D Rotary Cell Culture System bioreactor technology for myelomabone marrow co-cultures in gelatin scaffolds. The model was validated with myeloma cell lines that, as assessed by histochemical and electronmicroscopic analyses, engaged contacts with stromal cells and endothelial cells. Consistently, pro-survival signaling and also cell adhesionmediated drug resistance were significantly higher in 3D than in 2D parallel co-cultures. The contribution of the VLA-4/VCAM1 pathway to resistance to bortezomib was modeled by the use of VCAM1 transfectants. Soluble factor-mediated drug resistance could be also demonstrated in both 2D and 3D co-cultures. The system was then successfully applied to co-cultures of primary myeloma cells-primary myeloma bone marrow stromal cells from patients and endothelial cells, allowing the development of functional myeloma-stroma interactions and MM cell long-term survival. Significantly, genomic analysis performed in a highrisk myeloma patient demonstrated that culture in bioreactor paralleled the expansion of the clone that ultimately dominated in vivo. Finally, the impact of bortezomib on myeloma cells and on specialized functions of the microenvironment could be evaluated. Our findings indicate that 3D dynamic culture of reconstructed human multiple myeloma microenvironments in bioreactor may represent a useful platform for drug testing and for studying tumor-stroma molecular interactions. © 2018 Ferrata Storti Foundation.
Original languageEnglish
Pages (from-to)707-716
Number of pages10
JournalHaematologica
Volume103
Issue number4
DOIs
Publication statusPublished - 2018

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Coculture Techniques
Multiple Myeloma
Bioreactors
Bone Marrow
Drug Resistance
Pharmaceutical Preparations
Survival
Endothelial Cells
Integrin alpha4beta1
Gelatin
Stromal Cells
Mesenchymal Stromal Cells
Cell Communication
Clone Cells
Cell Culture Techniques
Technology
Cell Line
Neoplasms
Bortezomib

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Modeling multiple myeloma-bone marrow interactions and response to drugs in a 3d surrogate microenvironment. / Belloni, D; Heltai, S; Ponzoni, M; Villa, A; Vergani, B; Pecciarini, L; Marcatti, M; Girlanda, S; Tonon, G; Ciceri, F; Caligaris-Cappio, F; Ferrarini, M; Ferrero, E.

In: Haematologica, Vol. 103, No. 4, 2018, p. 707-716.

Research output: Contribution to journalArticle

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AU - Pecciarini, L

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