Abstract:
:Recently developed brain stimulation techniques have significantly advanced our ability to manipulate the brain's function. However, stimulating specific neurons in a desired region without significant surgical invasion remains a challenge. Here, we demonstrate a neuron-specific and region-targeted neural excitation strategy using non-invasive ultrasound through activation of heterologously expressed mechanosensitive ion channels (MscL-G22S). Low-intensity ultrasound is significantly better at inducing Ca2+ influx and neuron activation in vitro and at evoking electromyogram (EMG) responses in vivo in targeted cells expressing MscL-G22S. Neurons in the cerebral cortex or dorsomedial striatum of mice are made to express MscL-G22S and stimulated ultrasonically. We find significant upregulation of c-Fos in neuron nuclei only in the regions expressing MscL-G22S compared with the non-MscL controls, as well as in various other regions in the same brain. Thus, we detail an effective approach for activating specific regions and cell types in intact mouse brains by sensitizing them to ultrasound using a mechanosensitive ion channel.
journal_name
Cell Repjournal_title
Cell reportsauthors
Qiu Z,Kala S,Guo J,Xian Q,Zhu J,Zhu T,Hou X,Wong KF,Yang M,Wang H,Sun Ldoi
10.1016/j.celrep.2020.108033subject
Has Abstractpub_date
2020-08-18 00:00:00pages
108033issue
7issn
2211-1247pii
S2211-1247(20)31018-4journal_volume
32pub_type
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