Targeted Neurostimulation in Mouse Brains with Non-invasive Ultrasound.

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 Rep

journal_title

Cell reports

authors

Qiu Z,Kala S,Guo J,Xian Q,Zhu J,Zhu T,Hou X,Wong KF,Yang M,Wang H,Sun L

doi

10.1016/j.celrep.2020.108033

subject

Has Abstract

pub_date

2020-08-18 00:00:00

pages

108033

issue

7

issn

2211-1247

pii

S2211-1247(20)31018-4

journal_volume

32

pub_type

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