Vector-Mediated Antibody Gene Transfer for Infectious Diseases

2015 
This chapter discusses the emerging field of vector-mediated antibody gene transfer as an alternative vaccine for infectious disease, with a specific focus on HIV. However, this methodology need not be confined to HIV-1; the general strategy of vector-mediated antibody gene transfer can be applied to other difficult vaccine targets like hepatitis C virus, malaria, respiratory syncytial virus, and tuberculosis. This approach is an improvement over classical passive immunization strategies that administer antibody proteins to the host to provide protection from infection. With vector-mediated gene transfer, the antibody gene is delivered to the host, via a recombinant adeno-associated virus (rAAV) vector; this in turn results in long-term endogenous antibody expression from the injected muscle that confers protective immunity. Vector-mediated antibody gene transfer can rapidly move existing, potent broadly cross-neutralizing HIV-1-specific antibodies into the clinic. The gene transfer products demonstrate a potency and breadth identical to the original product. This strategy eliminates the need for immunogen design and interaction with the adaptive immune system to generate protection, a strategy that so far has shown limited promise.
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