79. Systemic Administration of Lentiviral Vectors Triggers Innate Host Responses

Beta thalassemia gene therapy using lentiviral vectors

Recent years, allogeneic bone marrow transplantation (BMT) has proved to be the successful cure for patients with thalassemia major, however this is restricted due to limited matched-related donor. Its complications include chronic graft-versus-host disease in 5-8% of patients. So, a molecular approach, such as gene therapy for direct normal beta globin gene transmission, seems quite promising ...

Innate Immune Responses to AAV Vectors

Gene replacement therapy by in vivo delivery of adeno-associated virus (AAV) is attractive as a potential treatment for a variety of genetic disorders. However, while AAV has been used successfully in many models, other experiments in clinical trials and in animal models have been hampered by undesired responses from the immune system. Recent studies of AAV immunology have focused on the elimin...

Biosafety of lentiviral vectors.

The characteristics of lentiviral vectors (stable integration in non-dividing and dividing cells, long-term expression of the transgene, absence of immune response) make them ideal gene transfer vehicula for future gene therapy. However, the most potent lentiviral vectors are derived from highly pathogenic human viruses, such as HIV. We describe how the field has engineered lentivectors with in...

Helper-dependent adenovirus vectors elicit intact innate but attenuated adaptive host immune responses in vivo.

Helper-dependent adenovirus (HD-Ad) vectors with all adenoviral genes deleted mediate very long-term expression of therapeutic transgenes in a variety of animal models of disease. These vectors are associated with reduced toxicity and improved safety relative to traditional early region 1 deletion first-generation Ad (FG-Ad) vectors. Many studies have clearly demonstrated that FG-Ad vectors ind...

Lentiviral Vectors in Immunotherapy