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Current Tissue Engineering (Discontinued)

Editor-in-Chief

ISSN (Print): 2211-5420
ISSN (Online): 2211-5439

Effects of Mesenchymal Stem Cells Associated with Pharmacologically Active Microcarriers on Cartilage Healing in Horses

Author(s): Lena Marteau, Matthieu Cousty, Julien Marette, Cyril Tricaud, Claudia Montero-Menei, Simon Roussel, Edwige Petit, Myriam Bernaudin, Nicolas Marette and Thibaut Scrive

Volume 4, Issue 2, 2015

Page: [102 - 110] Pages: 9

DOI: 10.2174/2211542004666150729005730

Price: $65

Abstract

Background: The present study evaluates the benefits of associating bone marrow-derived mesenchymal stem cells (MSCs) with pharmacologically active microcarriers (PAMs) on cartilage healing in horses.

Methods: This experimental study was carried out on ten standardbred horses with an induced cartilaginous lesion on the articulation of the fetlocks and with a follow-up of two months. Autologous MSCs, isolated from the bone marrow, were associated with either platelet-rich plasma (PRP), PAMs (functionalized with fibronectin and releasing or not TGF (Transforming Growth Factor)-β3) and injected into the joint 5 days after the creation of the lesion. A postoperative rehabilitation protocol was followed with a clinical and radiological follow-up. Two months after the injection, computed tomodensitometry (CT), magnetic resonance imaging (MRI) and histological examinations were performed on ex vivo samples of the joints.

Results: MSCs associated with PAMs releasing TGF-β3 significantly improved cartilage repair as assessed by histological analyses for tidemark presence and glycosaminoglycans content (p<0.05), while no effect of the treatment was evident at macroscopic examinations. In addition, the MSCs combined with PAM-TGFβ3 ameliorated these histological results when compared to MSCs with PAMs. These observations were supported by UTE (ultrashort time echo) sequences in the MRI images (p<0.0001).

Conclusion: A significant improvement in cartilage repair was detected based on histologic and UTE-MRI analyses in joints treated with MSCs associated with PAM-TGFβ3.

The association of equine MSCs with PAMs releasing TGF-β3 could be a novel therapeutic strategy for cartilage repair in athletic horses.

Keywords: Chondrogenesis, cartilage repair, horse, mesenchymal stem cells, microcarriers, regeneration, TGF-β3.

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