An enhancer-AAV approach selectively targeting dentate granule cells of the mouse hippocampus

作者：Emmie Banks, Claire‐Anne Gutekunst, Geoffrey Vargish, Anna Eaton, Kenneth A. Pelkey, Chris J. McBain, James Q. Zheng, Viktor Janos Oláh, Matthew JM Rowan · 发表于：Cell Reports Methods · 年份：2024 · DOI：10.1016/j.crmeth.2023.100684 · 被引用次数：6 · 研究领域：Virus-based gene therapy research、RNA Interference and Gene Delivery、interferon and immune responses

The mammalian brain contains a diverse array of cell types, including dozens of neuronal subtypes with distinct anatomical and functional characteristics. The brain leverages these neuron-type specializations to perform diverse circuit operations and thus execute different behaviors properly. Through the use of Cre lines, access to specific neuron types has improved over past decades. Despite their extraordinary utility, development and cross-breeding of Cre lines is time consuming and expensive, presenting a significant barrier to entry for investigators. Furthermore, cell-based therapeutics developed in Cre mice are not clinically translatable. Recently, several adeno-associated virus (AAV) vectors utilizing neuron-type-specific regulatory transcriptional sequences (enhancer-AAVs) were developed that overcome these limitations. Using a publicly available RNA sequencing (RNA-seq) dataset, we evaluated the potential of several candidate enhancers for neuron-type-specific targeting in the hippocampus. Here, we demonstrate that a previously identified enhancer-AAV selectively targets dentate granule cells over other excitatory neuron types in the hippocampus of wild-type adult mice.