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2016 ; 6
(ä): 26463
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Cryopreserved Mesenchymal Stromal Cells Maintain Potency in a Retinal
Ischemia/Reperfusion Injury Model: Toward an off-the-shelf Therapy
#MMPMID27212469
Gramlich OW
; Burand AJ
; Brown AJ
; Deutsch RJ
; Kuehn MH
; Ankrum JA
Sci Rep
2016[May]; 6
(ä): 26463
PMID27212469
show ga
The ability to use mesenchymal stromal cells (MSC) directly out of cryostorage
would significantly reduce the logistics of MSC therapy by allowing on-site
cryostorage of therapeutic doses of MSC at hospitals and clinics. Such a paradigm
would be especially advantageous for the treatment of acute conditions such as
stroke and myocardial infarction, which are likely to require treatment within
hours after ischemic onset. Recently, several reports have emerged that suggest
MSC viability and potency are damaged by cryopreservation. Herein we examine the
effect of cryopreservation on human MSC viability, immunomodulatory potency,
growth factor secretion, and performance in an ischemia/reperfusion injury model.
Using modifications of established cryopreservation methods we developed MSC that
retain >95% viability upon thawing, remain responsive to inflammatory signals,
and are able to suppress activated human peripheral blood mononuclear cells. Most
importantly, when injected into the eyes of mice 3?hours after the onset of
ischemia and 2?hours after the onset of reperfusion, cryopreserved performed as
well as fresh MSC to rescue retinal ganglion cells. Thus, our data suggests when
viability is maintained throughout the cryopreservation process, MSC retain their
therapeutic potency in both in vitro potency assays and an in vivo
ischemia/reperfusion model.