Aortic Implantation of Mesenchymal Stem Cells After Aneurysm Injury in a Porcine Model

Overview

Journal J Surg Res

Specialty General Surgery

Date 2011 Jul 19

PMID 21764076

Citations 12

Authors

Irene C Turnbull

Lahouaria Hadri

Kleopatra Rapti

Mikel Sadek

Lifan Liang

Hyun J Shin

Kevin D Costa

Michael L Marin

Roger J Hajjar

Peter L Faries

Affiliations

Soon will be listed here.

Abstract

Background: Cell-based therapies are being evaluated in the setting of degenerative pathophysiologic conditions. The search for the ideal method of delivery and improvement in cell engraftment continue to pose a challenge. This study explores the feasibility of introducing mesenchymal stem cells (MSC) following aortic injury in a porcine model.

Methods: Bone marrow-derived MSC were obtained from eight pigs, characterized for the MSC markers CD13 and CD 29, labeled with green fluorescent protein (GFP), and collected for autologous injection in a porcine model of abdominal aortic aneurysm (AAA). The pigs were euthanized (1-7 d) after the procedure to assess the histologic characteristics and presence of MSC in the aortic tissue. Negative controls included noninjured aorta. Tracking of the MSC was conducted by the identification of the GFP-labeled cells using immunofluorescence.

Results: AAA sections stained with hematoxylin and eosin showed disorganization of the aortic tissue; collagen-muscle-elastin stain demonstrated fragmentation of elastin fibers. The presence of the implanted MSC in the aortic wall was evidenced by fluorescent microscopy showing GFP labeled cells. Engraftment of MSC up to 7 d after introduction was observed.

Conclusion: Autologous implantation of bone marrow-derived MSC following aortic injury in a porcine model may be successfully accomplished. The long-term impact and therapeutic value of such cell-based therapy will require further investigation.

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