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2014 ; 22
(7
): 1342-1352
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Inflammation converts human mesoangioblasts into targets of alloreactive immune
responses: implications for allogeneic cell therapy of DMD
#MMPMID24736278
Noviello M
; Tedesco FS
; Bondanza A
; Tonlorenzi R
; Rosaria Carbone M
; Gerli MFM
; Marktel S
; Napolitano S
; Cicalese MP
; Ciceri F
; Peretti G
; Cossu G
; Bonini C
Mol Ther
2014[Jul]; 22
(7
): 1342-1352
PMID24736278
show ga
Stem cell therapy is a promising approach to regenerate healthy tissues starting
from a limited amount of self-renewing cells. Immunological rejection of cell
therapy products might represent a major limitation. In this study, we
investigated the immunological functional profile of mesoangioblasts,
vessel-associated myogenic stem cells, currently tested in a phase 1-2a trial,
active in our Institute, for the treatment of Duchenne muscular dystrophy. We
report that in resting conditions, human mesoangioblasts are poorly immunogenic,
inefficient in promoting the expansion of alloreactive T cells and intrinsically
resistant to T-cell killing. However, upon exposure to interferon-? or
differentiation into myotubes, mesoangioblasts acquire the ability to promote the
expansion of alloreactive T cells and acquire sensitivity to T-cell killing.
Resistance of mesoangioblasts to T-cell killing is largely due to the expression
of the intracellular serine protease inhibitor-9 and represents a relevant
mechanism of stem cell immune evasion.