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Permanent genetic access to transiently active neurons via TRAP: Targeted recombination in active populations

机译:通过TRAP永久性地获得瞬时活性神经元的遗传途径:活性群体的靶向重组

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摘要

Targeting genetically encoded tools for neural circuit dissection to relevant cellular populations is a majorchallenge in neurobiology. We developed an approach, targeted recombination in active populations (TRAP), to obtain genetic access to neurons that were activated by defined stimuli. This method utilizes mice in which the tamoxifen-dependent recombinase CreERT2 is expressed in an activity-dependent manner from the loci of the immediate early genes Arc and Fos. Active cells that express CreERT2 can only undergo recombination when tamoxifen is present, allowing genetic access to neurons that are active during a time window of less than 12hr. We show that TRAP can provide selective access to neurons activated by specific somatosensory, visual, and auditory stimuli and by experience in a novel environment. When combined with tools for labeling, tracing, recording, and manipulating neurons, TRAP offers a powerful approach for understanding how the brain processes information and generates behavior.
机译:将用于神经回路解剖的遗传编码工具靶向相关细胞群体是神经生物学的一大挑战。我们开发了一种方法,有针对性地在活动人群中进行重组(TRAP),以获取对已定义的刺激激活的神经元的遗传途径。这种方法利用的小鼠中,他莫昔芬依赖性重组酶CreERT2以活性依赖性方式从立即早期基因Arc和Fos的基因座表达。仅在存在他莫昔芬时,表达CreERT2的活性细胞才能进行重组,从而可以在不到12小时的时间范围内遗传访问活跃的神经元。我们显示,TRAP可以提供对特定体感,视觉和听觉刺激以及在新型环境中的经验激活的神经元的选择性访问。与用于标记,跟踪,记录和操纵神经元的工具结合使用时,TRAP提供了一种强大的方法来了解大脑如何处理信息并产生行为。

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