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Human adipose stromal vascular cell delivery in a fibrin spray.

Abstract：

BACKGROUND AIMS:Adipose tissue represents a practical source of autologous mesenchymal stromal cells (MSCs) and vascular-endothelial progenitor cells, available for regenerative therapy without in vitro expansion. One of the problems confronting the therapeutic application of such cells is how to immobilize them at the wound site. We evaluated in vitro the growth and differentiation of human adipose stromal vascular fraction (SVF) cells after delivery through the use of a fibrin spray system. METHODS:SVF cells were harvested from four human adult patients undergoing elective abdominoplasty, through the use of the LipiVage system. After collagenase digestion, mesenchymal and endothelial progenitor cells (pericytes, supra-adventitial stromal cells, endothelial progenitors) were quantified by flow cytometry before culture. SVF cells were applied to culture vessels by means of the Tisseel fibrin spray system. SVF cell growth and differentiation were documented by immunofluorescence staining and photomicrography. RESULTS:SVF cells remained viable after application and were expanded up to 3 weeks, when they reached confluence and adipogenic differentiation. Under angiogenic conditions, SVF cells formed endothelial (vWF+, CD31+ and CD34+) tubules surrounded by CD146+ and α-smooth muscle actin+ perivascular/stromal cells. CONCLUSIONS:Human adipose tissue is a rich source of autologous stem cells, which are readily available for regenerative applications such as wound healing, without in vitro expansion. Our results indicate that mesenchymal and endothelial progenitor cells, prepared in a closed system from unpassaged lipoaspirate samples, retain their growth and differentiation capacity when applied and immobilized on a substrate using a clinically approved fibrin sealant spray system.

journal_name

Cytotherapy

journal_title

Cytotherapy

authors

Zimmerlin L,Rubin JP,Pfeifer ME,Moore LR,Donnenberg VS,Donnenberg AD

doi

10.1016/j.jcyt.2012.10.009

subject

Has Abstract

pub_date

2013-01-01 00:00:00

pages

102-8

issue

1

eissn

1465-3249

issn

1477-2566

pii

S1465-3249(12)00011-4

journal_volume

15

pub_type

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