Biotherapies developed and manufactured in France in compliance with good practices
Clinical studies based on real animal treatments
Easy to use products, delivered solely by veterinarians
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Biotherapies developed and manufactured in France in compliance with good practices
Clinical studies based on real animal treatments
Easy to use products, delivered solely by veterinarians
Précédent
Suivant

H – RNA Interference and BMP-2 Stimulation Allows Equine Chondrocytes Redifferentiation in 3D-Hypoxia Cell Culture Model: Application for Matrix-Induced Autologous Chondrocyte Implantation

- Rodolphe Rakic, Bastien Bourdon, Magalie Hervieu, Thomas Branly, Florence Legendre, Nathalie Saulnier, Fabrice Audigié, Stéphane Maddens, Magali Demoor, Philippe Galera - Int. J. Mol. Sci. 2017

As in humans, osteoarthritis (OA) causes considerable economic loss to the equine industry.

New hopes for cartilage repair have emerged with the matrix-associated autologous chondrocyte implantation (MACI). Nevertheless, its limitation is due to the dedifferentiation occurring during the chondrocyte amplification phase, leading to the loss of its capacity to produce a hyaline extracellular matrix (ECM). To enhance the MACI therapy efficiency, we have developed a strategy for chondrocyte redifferentiation, and demonstrated its feasibility in the equine model. Thus, to mimic the cartilage microenvironment, the equine dedifferentiated chondrocytes were cultured in type I/III collagen sponges for 7 days under hypoxia in the presence of BMP-2. In addition, chondrocytes were transfected by siRNA targeting Col1a1 and Htra1 mRNAs, which are overexpressed during dedifferentiation and OA. To investigate the quality of the neo-synthesized ECM, specific and atypical cartilage markers were evaluated by RT-qPCR and Western blot. Our results show that the combination of 3D hypoxia cell culture, BMP-2 (Bone morphogenetic protein-2), and RNA interference, increases the chondrocytes functional indexes (Col2a1/Col1a1, Acan/Col1a1), leading to an effective chondrocyte redifferentiation. These data represent a proof of concept for this process of application, in vitro, in the equine model, and will lead to the improvement of the MACI efficiency for cartilage tissue engineering therapy in preclinical/clinical trials, both in equine and human medicine.

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For Veterinarians only

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Product Pipeline

Range Product Development & optimization Proof of Concept Pilot study Industrialisation /
Manufacturing
Pivotal study Approval Marketing Launch

CANIPREN

VBX-01
Canine osteoarthritis

VBX-01
Canine osteoarthritis

VBX-01
Canine osteoarthritis

CA0102
Atopic dermatitis

CA0103
Atopic dermatitis
Chronic
Inflammatory
Bowel
Disease

Range Product Development & optimization Proof of Concept Pilot study Industrialisation /
Manufacturing
Pivotal study Approval Marketing Launch

FELIPREN

FE0101
Gingivostomatitis

FE0102
Chronic kidney
failure

FE0103
Feline arthrosis

Range Product Development & optimization Proof of Concept Pilot study Industrialisation /
Manufacturing
Pivotal study Approval Marketing Launch

EQUIPREN
OMBISTEM

EQ0101
Equine arthrosis