Title
Marrow-isolated adult multilineage inducible cells embedded within a biologically-inspired construct promote recovery in a mouse model of peripheral vascular disease
Date Issued
01 February 2017
Access level
open access
Resource Type
journal article
Author(s)
Grau-Monge C.
Delcroix G.J.R.
Bonnin-Marquez A.
Valdes M.
Awadallah E.L.M.
Quevedo D.F.
Armour M.R.
Montero R.B.
Andreopoulos F.M.
D'Ippolito G.
University of Miami
Publisher(s)
Institute of Physics Publishing
Abstract
Peripheral vascular disease is one of the major vascular complications in individuals suffering from diabetes and in the elderly that is associated with significant burden in terms of morbidity and mortality. Stem cell therapy is being tested as an attractive alternative to traditional surgery to prevent and treat this disorder. The goal of this study was to enhance the protective and reparative potential of marrow-isolated adult multilineage inducible (MIAMI) cells by incorporating them within a bio-inspired construct (BIC) made of two layers of gelatin B electrospun nanofibers. We hypothesized that the BIC would enhance MIAMI cell survival and engraftment, ultimately leading to a better functional recovery of the injured limb in our mouse model of critical limb ischemia compared to MIAMI cells used alone. Our study demonstrated that MIAMI cell-seeded BIC resulted in a wide range of positive outcomes with an almost full recovery of blood flow in the injured limb, thereby limiting the extent of ischemia and necrosis. Functional recovery was also the greatest when MIAMI cells were combined with BICs, compared to MIAMI cells alone or BICs in the absence of cells. Histology was performed 28 days after grafting the animals to explore the mechanisms at the source of these positive outcomes. We observed that our critical limb ischemia model induces an extensive loss of muscular fibers that are replaced by intermuscular adipose tissue (IMAT), together with a highly disorganized vascular structure. The use of MIAMI cells-seeded BIC prevented IMAT infiltration with some clear evidence of muscular fibers regeneration.
Volume
12
Issue
1
Language
English
OCDE Knowledge area
Biomateriales Enfermedad vascular periférica
Scopus EID
2-s2.0-85014657272
PubMed ID
Source
Biomedical Materials (Bristol)
ISSN of the container
17486041
Sponsor(s)
We thank David Vazquez and Blanca N Rodriguez for their assistance throughout this study as well as the entire GRECC staff. This study was supported by an NIH R21 grant (NIH-NHLBI R21 AG044624) to GDI and FA and by a Department of Veterans Affairs, Veterans Health Administration, Office of Research and Development (Biomedical Laboratory Research and Development) Merit Review award (BX000952) to PCS.
Sources of information: Directorio de Producción Científica Scopus