Development of Novel Adenoviral Vectors to Overcome Challenges Observed With HAdV-5–based Constructs

Alonso-Pallida, Julio and Papp, Tibor and Kaján, Győző and Benkő, Mária and Havenga, Menzo and Lemckert, Angelique and Harrach, Balázs and Baker, Andrew H. (2016) Development of Novel Adenoviral Vectors to Overcome Challenges Observed With HAdV-5–based Constructs. MOLECULAR THERAPY, 24 (1). pp. 6-16. ISSN 1525-0016

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Abstract

Recombinant vectors based on human adenovirus serotype 5 (HAdV-5) have been extensively studied in preclinical models and clinical trials over the past two decades. However, the thorough understanding of the HAdV-5 interaction with human subjects has uncovered major concerns about its product applicability. High vector-associated toxicity and widespread preexisting immunity have been shown to significantly impede the effectiveness of HAdV-5–mediated gene transfer. It is therefore that the in-depth knowledge attained working on HAdV-5 is currently being used to develop alternative vectors. Here, we provide a comprehensive overview of data obtained in recent years disqualifying the HAdV-5 vector for systemic gene delivery as well as novel strategies being pursued to overcome the limitations observed with particular emphasis on the ongoing vectorization efforts to obtain vectors based on alternative serotypes.

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