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Biological and functional characterization of bone marrow-derived mesenchymal stromal cells from patients affected by primary immunodeficiency.

Biological and functional characterization of bone marrow-derived mesenchymal stromal cells from patients affected by primary immunodeficiency.
Author Information (click to view)

Starc N, Ingo D, Conforti A, Rossella V, Tomao L, Pitisci A, De Mattia F, Brigida I, Algeri M, Montanari M, Palumbo G, Merli P, Rossi P, Aiuti A, Locatelli F, Bernardo ME,


Starc N, Ingo D, Conforti A, Rossella V, Tomao L, Pitisci A, De Mattia F, Brigida I, Algeri M, Montanari M, Palumbo G, Merli P, Rossi P, Aiuti A, Locatelli F, Bernardo ME, (click to view)

Starc N, Ingo D, Conforti A, Rossella V, Tomao L, Pitisci A, De Mattia F, Brigida I, Algeri M, Montanari M, Palumbo G, Merli P, Rossi P, Aiuti A, Locatelli F, Bernardo ME,

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Scientific reports 2017 08 157(1) 8153 doi 10.1038/s41598-017-08550-5
Abstract

Mesenchymal stromal cells (MSCs) represent a key component of bone marrow (BM) microenvironment and display immune-regulatory properties. We performed a detailed analysis of biological/functional properties of BM-MSCs derived from 33 pediatric patients affected by primary immune-deficiencies (PID-MSCs): 7 Chronic Granulomatous Disease (CGD), 15 Wiskott-Aldrich Syndrome (WAS), 11 Severe Combined Immunodeficiency (SCID). Results were compared with MSCs from 15 age-matched pediatric healthy-donors (HD-MSCs). Clonogenic and proliferative capacity, differentiation ability, immunophenotype, immunomodulatory properties were analyzed. WB and RT-qPCR for CYBB, WAS and ADA genes were performed. All PID-MSCs displayed clonogenic and proliferative capacity, morphology and immunophenotype comparable with HD-MSCs. PID-MSCs maintained the inhibitory effect on T- and B-lymphocyte proliferation, except for decreased inhibitory ability of SCID-MSCs at MSC:PBMC ratio 1:10. While HD- and CGD-MSCs were able to inhibit monocyte maturation into immature dendritic cells, in SCID- and WAS-MSCs this ability was reduced. After Toll-like Receptor priming, PID-MSCs displayed in vitro an altered gene expression profile of pro- and anti-inflammatory soluble factors. PID-MSCs displayed lower PPARγ levels and WAS- and SCID-MSCs higher levels of key osteogenic markers, as compared with HD-MSCs. Our results indicate that PID-MSCs may be defective in some functional abilities; whether these defects contribute to disease pathophysiology deserves further investigation.

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