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2018 ; 8
(1
): 8398
Nephropedia Template TP
Urciuolo A
; Urbani L
; Perin S
; Maghsoudlou P
; Scottoni F
; Gjinovci A
; Collins-Hooper H
; Loukogeorgakis S
; Tyraskis A
; Torelli S
; Germinario E
; Fallas MEA
; Julia-Vilella C
; Eaton S
; Blaauw B
; Patel K
; De Coppi P
Sci Rep
2018[May]; 8
(1
): 8398
PMID29849047
show ga
Pathological conditions affecting skeletal muscle function may lead to
irreversible volumetric muscle loss (VML). Therapeutic approaches involving
acellular matrices represent an emerging and promising strategy to promote
regeneration of skeletal muscle following injury. Here we investigated the
ability of three different decellularised skeletal muscle scaffolds to support
muscle regeneration in a xenogeneic immune-competent model of VML, in which the
EDL muscle was surgically resected. All implanted acellular matrices, used to
replace the resected muscles, were able to generate functional artificial muscles
by promoting host myogenic cell migration and differentiation, as well as nervous
fibres, vascular networks, and satellite cell (SC) homing. However, acellular
tissue mainly composed of extracellular matrix (ECM) allowed better myofibre
three-dimensional (3D) organization and the restoration of SC pool, when compared
to scaffolds which also preserved muscular cytoskeletal structures. Finally, we
showed that fibroblasts are indispensable to promote efficient migration and
myogenesis by muscle stem cells across the scaffolds in vitro. This data strongly
support the use of xenogeneic acellular muscles as device to treat VML conditions
in absence of donor cell implementation, as well as in vitro model for studying
cell interplay during myogenesis.