Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
Department of Neuroscience, University of Pittsburgh, Pittsburgh, PA, USA.
Nat Neurosci. 2019 Sep;22(9):1413-1423. doi: 10.1038/s41593-019-0462-8. Epub 2019 Aug 19.
Understanding the transcriptional changes that are engaged in stress resilience may reveal novel antidepressant targets. Here we use gene co-expression analysis of RNA-sequencing data from brains of resilient mice to identify a gene network that is unique to resilience. Zfp189, which encodes a previously unstudied zinc finger protein, is the highest-ranked key driver gene in the network, and overexpression of Zfp189 in prefrontal cortical neurons preferentially activates this network and promotes behavioral resilience. The transcription factor CREB is a predicted upstream regulator of this network and binds to the Zfp189 promoter. To probe CREB-Zfp189 interactions, we employ CRISPR-mediated locus-specific transcriptional reprogramming to direct CREB or G9a (a repressive histone methyltransferase) to the Zfp189 promoter in prefrontal cortex neurons. Induction of Zfp189 with site-specific CREB is pro-resilient, whereas suppressing Zfp189 expression with G9a increases susceptibility. These findings reveal an essential role for Zfp189 and CREB-Zfp189 interactions in mediating a central transcriptional network of resilience.
了解参与应激弹性的转录变化可能揭示新的抗抑郁靶点。在这里,我们使用来自有弹性的老鼠大脑的 RNA 测序数据的基因共表达分析,来鉴定一个对弹性具有独特性的基因网络。编码一个以前未被研究的锌指蛋白的 Zfp189 是该网络中排名最高的关键驱动基因,过表达 Zfp189 在前额皮质神经元中优先激活该网络,并促进行为弹性。转录因子 CREB 是该网络的一个预测上游调节因子,与 Zfp189 启动子结合。为了探究 CREB-Zfp189 相互作用,我们采用 CRISPR 介导的基因座特异性转录重编程,将 CREB 或 G9a(一种抑制性组蛋白甲基转移酶)定向到前额皮质神经元中的 Zfp189 启动子。特异性 CREB 诱导 Zfp189 的表达是抗抑郁的,而用 G9a 抑制 Zfp189 的表达则会增加易感性。这些发现揭示了 Zfp189 和 CREB-Zfp189 相互作用在介导应激弹性的中央转录网络中的重要作用。