Abstract:
:Optogenetics revolutionizes basic research in neuroscience and cell biology and bears potential for medical applications. We develop mutants leading to a unifying concept for the construction of various channelrhodopsins with fast closing kinetics. Due to different absorption maxima these channelrhodopsins allow fast neural photoactivation over the whole range of the visible spectrum. We focus our functional analysis on the fast-switching, red light-activated Chrimson variants, because red light has lower light scattering and marginal phototoxicity in tissues. We show paradigmatically for neurons of the cerebral cortex and the auditory nerve that the fast Chrimson mutants enable neural stimulation with firing frequencies of several hundred Hz. They drive spiking at high rates and temporal fidelity with low thresholds for stimulus intensity and duration. Optical cochlear implants restore auditory nerve activity in deaf mice. This demonstrates that the mutants facilitate neuroscience research and future medical applications such as hearing restoration.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Mager T,Lopez de la Morena D,Senn V,Schlotte J,D Errico A,Feldbauer K,Wrobel C,Jung S,Bodensiek K,Rankovic V,Browne L,Huet A,Jüttner J,Wood PG,Letzkus JJ,Moser T,Bamberg Edoi
10.1038/s41467-018-04146-3subject
Has Abstractpub_date
2018-05-01 00:00:00pages
1750issue
1issn
2041-1723pii
10.1038/s41467-018-04146-3journal_volume
9pub_type
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