Published July 17, 2024 | Version v1
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Bidirectional Regulation of Motor Circuits Using Magnetogenetic Gene Therapy

Description

Here we report a novel suite of magnetogenetic tools, based on a single anti-ferritin nanobody-TRPV1 receptor fusion protein, which regulated neuronal activity when exposed to magnetic fields. AAV-mediated delivery of a floxed nanobody-TRPV1 into the striatum of adenosine 2a receptor-cre driver mice resulted in motor freezing when placed in an MRI or adjacent to a transcranial magnetic stimulation (TMS) device. Functional imaging and fiber photometry both confirmed activation of the target region in response to the magnetic fields.  Expression of the same construct in the striatum of wild-type mice along with a second injection of an AAVretro expressing cre into the globus pallidus led to similar circuit specificity and motor responses. Finally, a mutation was generated to gate chloride and inhibit neuronal activity. Expression of this variant in subthalamic nucleus in PitX2-cre parkinsonian mice resulted in reduced local c-fos expression and motor rotational behavior. These data demonstrate that magnetogenetic constructs can bidirectionally regulate activity of specific neuronal circuits non-invasively in-vivo using clinically available devices.

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Additional details

Related works

Is supplemented by
Publication: 10.1101/2023.07.13.548699 (DOI)

Funding

JPB Foundation
National Institute of Neurological Disorders and Stroke
Remote Electromagnetic Control of Neural Activity for Treatment of Parkinson's Disease 5R01NS097184-05