Sono-optogenetics facilitated by a circulation-delivered rechargeable light source for minimally invasive optogenetics.

ABSTRACT: Optogenetics, which uses visible light to control the cells genetically modified with light-gated ion channels, is a powerful tool for precise deconstruction of neural circuitry with neuron-subtype specificity. However, due to limited tissue penetration of visible light, invasive craniotomy and intracranial implantation of tethered optical fibers are usually required for in vivo optogenetic modulation. Here we report mechanoluminescent nanoparticles that can act as local light sources in the brain when triggered by brain-penetrant focused ultrasound (FUS) through intact scalp and skull. Mechanoluminescent nanoparticles can be delivered into the blood circulation via i.v. injection, recharged by 400-nm photoexcitation light in superficial blood vessels during circulation, and turned on by F

SUBMITTER: Wu X 

PROVIDER: S-EPMC6936518 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature