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Citation Information: JCI Insight. 2019;4(22):e131610. https://doi.org/10.1172/jci.insight.131610.
Abstract
While gene transfer using recombinant adeno-associated viral (rAAV) vectors has shown success in some clinical trials, there remain many tissues that are not well transduced. Because of the recent success in reprogramming islet-derived cells into functional β cells in animal models, we constructed 2 highly complex barcoded replication competent capsid shuffled libraries and selected for high-transducing variants on primary human islets. We describe the generation of a chimeric AAV capsid (AAV-KP1) that facilitates transduction of primary human islet cells and human embryonic stem cell–derived β cells with up to 10-fold higher efficiency compared with previously studied best-in-class AAV vectors. Remarkably, this chimeric capsid also enabled transduction of both mouse and human hepatocytes at very high levels in a humanized chimeric mouse model, thus providing a versatile vector that has the potential to be used in both preclinical testing and human clinical trials for liver-based diseases and diabetes.
Authors
Katja Pekrun, Gustavo De Alencastro, Qing-Jun Luo, Jun Liu, Youngjin Kim, Sean Nygaard, Feorillo Galivo, Feijie Zhang, Ren Song, Matthew R. Tiffany, Jianpeng Xu, Matthias Hebrok, Markus Grompe, Mark A. Kay
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