Background: The beneficial activity of mesenchymal stromal cells (MSC) in allogeneic hematopietic stem cell transplantation requires a correct use in terms of cell dose and timing of infusion and the identification of biomarkers for selection. The immunosuppressive bone marrow derived BM-MSC functions has been associated with the production of soluble HLA-G molecule (sHLA-G), via interleukin-10 (IL-10). We established a reliable method to evaluate BM-MSC HLA-G expression without the influence of peripheral blood mononuclear cells (PBMCs). Methods: Thirteen BM-MSCs from donors were activated with recombinant IL-10 or co-cultured with 10 different phytohaemaglutinin treated-peripheral blood mononuclear cells (PHA-PBMCs). Membrane-bound and soluble HLA-G expression was evaluated by flow cytometry and ELISA respectively; lymphoproliferation was measured by (methyl-3H) Thymidine. Results: The results demonstrated the ability of IL-10 to stimulate both membrane-bound and soluble HLA-G production by BM-MSCs. The levels of HLA-G expression induced by IL-10 in BM-MSCs were associated with the inhibition of PHA-PBMC proliferation (sHLA-G: p= 0.0008, r=0.9308; membrane HLA-G: p= 0.0005, r= 0.9502). Discussion: These results propose the evaluation of sHLA-G production in IL-10-treated BM-MSC cultures as a possible marker of immunoregulatory functions.

A simple method to identify bone marrow mesenchymal stromal cells with a high immunosuppressive potential

RIZZO, Roberta
Co-primo
;
STIGNANI, Marina;CAMPIONI, Diana;CUNEO, Antonio;LANZA, Francesco;BARICORDI, Olavio
2011

Abstract

Background: The beneficial activity of mesenchymal stromal cells (MSC) in allogeneic hematopietic stem cell transplantation requires a correct use in terms of cell dose and timing of infusion and the identification of biomarkers for selection. The immunosuppressive bone marrow derived BM-MSC functions has been associated with the production of soluble HLA-G molecule (sHLA-G), via interleukin-10 (IL-10). We established a reliable method to evaluate BM-MSC HLA-G expression without the influence of peripheral blood mononuclear cells (PBMCs). Methods: Thirteen BM-MSCs from donors were activated with recombinant IL-10 or co-cultured with 10 different phytohaemaglutinin treated-peripheral blood mononuclear cells (PHA-PBMCs). Membrane-bound and soluble HLA-G expression was evaluated by flow cytometry and ELISA respectively; lymphoproliferation was measured by (methyl-3H) Thymidine. Results: The results demonstrated the ability of IL-10 to stimulate both membrane-bound and soluble HLA-G production by BM-MSCs. The levels of HLA-G expression induced by IL-10 in BM-MSCs were associated with the inhibition of PHA-PBMC proliferation (sHLA-G: p= 0.0008, r=0.9308; membrane HLA-G: p= 0.0005, r= 0.9502). Discussion: These results propose the evaluation of sHLA-G production in IL-10-treated BM-MSC cultures as a possible marker of immunoregulatory functions.
2011
Rizzo, Roberta; Lanzoni, G.; Stignani, Marina; Campioni, Diana; Alviano, F.; Ricci, F.; Tazzari, P. L.; Melchiorri, L.; Zaccaria Scalinci, S.; Cuneo, Antonio; Bonsi, L.; Lanza, Francesco; Bagnara, G. P.; Baricordi, Olavio
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1460315
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