retroviral particles, protected against complement mediated lysis

摘要

The present invention relates to retroviral particles which are specifically applicable as safe gene transfer vehicles for targeted gene therapy and which are protected against complement mediated destruction in host organisms. For producing such retroviral particles a packaging cell is provided according to the present invention comprising a DNA construct coding for one or more complement inhibitors. Said inhibitors are derived from the complement system of the organism to be infected by the retroviral particle generated by the packaging cell.