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Open Access Research article

Virally and physically transgenized equine adipose-derived stromal cells as a cargo for paracrine secreted factors

Gaetano Donofrio1*, Antonio Capocefalo1, Valentina Franceschi1, Giorgio Morini2, Maurizio Del Bue3, Virna Conti4, Sandro Cavirani1 and Stefano Grolli4

Author Affiliations

1 Dipartimento di Salute Animale, Sezione di Malattie Infettive, Facoltà di Medicina Veterinaria, via del Taglio 10. 43100 Parma, Italy

2 Dipartimento di Salute Animale, Sezione di Clinica Ostetrica e Riproduzione Animale, Facoltà di Medicina Veterinaria, via del Taglio 10. 43100 Parma, Italy

3 Dipartimento di Salute Animale, Sezione di Clinica Chirurgica Veterinaria e Medicina d' Urgenza, Facoltà di Medicina Veterinaria, via del Taglio 10. 43100 Parma, Italy

4 Dipartimento di Produzioni Animali, Biotecnologie Veterinarie, Qualità e Sicurezza degli Alimenti, Sezione di Biochimica Veterinaria, Facoltà di Medicina Veterinaria, via del Taglio 10. 43100 Parma, Italy

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BMC Cell Biology 2010, 11:73  doi:10.1186/1471-2121-11-73

Published: 23 September 2010

Abstract

Background

Adipose-Derived Stromal Cells have been shown to have multiple lineage differentiation properties and to be suitable for tissues regeneration in many degenerative processes. Their use has been proposed for the therapy of joint diseases and tendon injuries in the horse. In the present report the genetic manipulation of Equine Adipose-Derived Stromal Cells has been investigated.

Results

Equine Adipose-Derived Stromal Cells were successfully virally transduced as well as transiently and stably transfected with appropriate parameters, without detrimental effect on their differentiation properties. Moreover, green fluorescent protein alone, fused to neo gene, or co-expressed as bi-cistronic reporter constructs, driven by viral and house-keeping gene promoters, were tested. The better expressed cassette was employed to stably transfect Adipose-Derived Stromal Cells for cell therapy purposes. Stably transfected Equine Adipose-Derived Stromal Cells with a heterologous secreted viral antigen were able to immunize horses upon injection into the lateral wall of the neck.

Conclusion

This study provides the methods to successfully transgenize Adipose-Derived Stromal Cells both by lentiviral vector and by transfection using optimized constructs with suitable promoters and reporter genes. In conclusion these findings provide a working platform for the delivery of potentially therapeutic proteins to the site of cells injection via transgenized Equine Adipose-Derived Stromal Cells.