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Human Bone Marrow Mesenchymal Stromal Cell-Derived CXCL12, IL-6 and GDF-15 and Their Capacity to Support IgG-Secreting Cells in Culture Are Divergently Affected by Doxorubicin

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Lasaviciute, Gintare 
Höbinger, Anna 
Ujvari, Dorina 
Salamon, Daniel 


jats:pVarious subsets of bone marrow mesenchymal stromal cells (BM MSCs), including fibroblasts, endothelial, fat and reticular cells, are implicated in the regulation of the hematopoietic microenvironment and the survival of long-lived antibody-secreting cells (ASCs). Nowadays it is widely acknowledged that vaccine-induced protective antibody levels are diminished in adults and children that are treated for hematological cancers. A reason behind this could be damage to the BM MSC niche leading to a diminished pool of ASCs. To this end, we asked whether cell cytotoxic treatment alters the capacity of human BM MSCs to support the survival of ASCs. To investigate how chemotherapy affects soluble factors related to the ASC niche, we profiled a large number of cytokines and chemokines from in vitro-expanded MSCs from healthy donors or children who were undergoing therapy for acute lymphoblastic leukemia (ALL), following exposure to a widely used anthracycline called doxorubicin (Doxo). In addition, we asked if the observed changes in the measured soluble factors after Doxo exposure impacted the ability of the BM niche to support humoral immunity by co-culturing Doxo-exposed BM MSCs with in vitro-differentiated ASCs from healthy blood donors, and selective neutralization of cytokines. Our in vitro results imply that Doxo-induced alterations in BM MSC-derived interleukin 6 (IL-6), CXCL12 and growth and differentiation factor 15 (GDF-15) are not sufficient to disintegrate the support of IgG-producing ASCs by the BM MSC niche, and that serological memory loss may arise during later stages of ALL therapy.</jats:p>



32 Biomedical and Clinical Sciences, 3204 Immunology, Stem Cell Research - Nonembryonic - Human, Stem Cell Research, Hematology, Cancer, Pediatric, Childhood Leukemia, Rare Diseases, Pediatric Cancer, 5 Development of treatments and therapeutic interventions, 5.2 Cellular and gene therapies, 2.1 Biological and endogenous factors, 2 Aetiology, Cancer, Inflammatory and immune system

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Vetenskapsrådet (2017-02001)
Barncancerfonden (2014-0112)
Stockholm County through the ALF agreement (2015-0239, NA)
Cancerfonden (CAN 2017/460)
Insamlingsstiftelsen Cancer- och Allergifonden (204)