Gene Therapy Protocols pp 203-212

Part of the Methods in Molecular Biology™ book series (MIMB, volume 433)

Retroviral Modification of Mesenchymal Stem Cells for Gene Therapy of Hemophilia

  • Christopher B. Doering


Mesenchymal stem cells (MSCs) are a promising target for the delivery of secreted proteins due to their ease of isolation, expansion, and genetic modification. The bleeding disorder hemophilia A results from the deficiency of a secreted blood clotting factor termed factor VIII (fVIII). Hemophilia A could be cured by gene-transfer-based procedures targeting virtually any cell type, including MSCs. Here, we describe methods for retroviral modification of MSCs incorporating a high-expression porcine (HEP)-fVIII transgene and a murine model of hemophilia A. MSCs were isolated from bone marrow of hemophilia A mice, expanded, and transduced ex vivo. Genetically modified MSCs secreted high levels of HEP-fVIII into the conditioned medium. HEP-fVIII was purified from the conditioned medium and demonstrated to have a specific activity, relative electrophoretic mobility, and proteolytic activation pattern similar to HEP-fVIII produced by other commercial cell lines. Collectively, these data support the concept that MSCs can be utilized as a cellular vehicle for successful gene-transfer-based therapy of hemophilia A and other disorders resulting from the deficiency of a secreted protein.


Mesenchymal stem cells marrow-derived stromal cells gene therapy retroviral vector murine stem cell virus hemophilia A porcine factor VIII 


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Copyright information

© Humana Press, a part of Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Christopher B. Doering
    • 1
  1. 1.Aflac Cancer Center and Blood Disorders Service, Department of PediatricsEmory UniversityGA

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