Home > Publications Database > Optogenetic silencing by combining a rhodopsin cyclase with an engineered cGMP-gated potassium channel. > print

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005     20251218103443.0
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037 _ _ |a DZNE-2025-01325
041 _ _ |a English
082 _ _ |a 500
100 1 _ |a Spreen, Anika
|0 0009-0002-5649-4364
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245 _ _ |a Optogenetic silencing by combining a rhodopsin cyclase with an engineered cGMP-gated potassium channel.
260 _ _ |a Washington, DC [u.a.]
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520 _ _ |a Since the advent of optogenetics, great progress has been made in developing tools to modulate and detect cellular activity using light. We present a two-component optogenetic silencing tool, RoCK (rhodopsin cyclase/K+ channel), which pairs the rhodopsin-guanylyl cyclase CaRhGC with customized SthK K+ channels that are engineered to open selectively upon guanosine 3',5'-monophosphate (cGMP) binding. By enhancing the cGMP sensitivity and open probability of SthK mutants, we obtained four channel variants suited for different levels of cGMP concentration. CaRhGC's membrane-bound nature enables localized cGMP production, and the lack of dark activity reduces the risk for off-target effects. Optimized RoCK effectively modulated cellular activity in mouse hippocampal neurons, in acute hippocampal slices, and in rabbit cardiomyocytes. In zebrafish, RoCK silenced motor neurons in vivo, suppressing the characteristic coiling behavior of embryos, thus highlighting its potential for behavioral studies. In summary, RoCK expands our optogenetic toolkit threefold for fast cGMP production, fast cGMP sensing, and K+-based cell silencing.
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650 _ 7 |a Cyclic GMP
|0 H2D2X058MU
|2 NLM Chemicals
650 _ 7 |a Rhodopsin
|0 9009-81-8
|2 NLM Chemicals
650 _ 7 |a Guanylate Cyclase
|0 EC 4.6.1.2
|2 NLM Chemicals
650 _ 7 |a Potassium Channels
|2 NLM Chemicals
650 _ 2 |a Optogenetics: methods
|2 MeSH
650 _ 2 |a Animals
|2 MeSH
650 _ 2 |a Cyclic GMP: metabolism
|2 MeSH
650 _ 2 |a Mice
|2 MeSH
650 _ 2 |a Rhodopsin: metabolism
|2 MeSH
650 _ 2 |a Rhodopsin: genetics
|2 MeSH
650 _ 2 |a Humans
|2 MeSH
650 _ 2 |a Hippocampus: metabolism
|2 MeSH
650 _ 2 |a Hippocampus: cytology
|2 MeSH
650 _ 2 |a Guanylate Cyclase: metabolism
|2 MeSH
650 _ 2 |a Guanylate Cyclase: genetics
|2 MeSH
650 _ 2 |a Zebrafish
|2 MeSH
650 _ 2 |a Potassium Channels: metabolism
|2 MeSH
650 _ 2 |a Potassium Channels: genetics
|2 MeSH
650 _ 2 |a Protein Engineering
|2 MeSH
650 _ 2 |a Myocytes, Cardiac: metabolism
|2 MeSH
650 _ 2 |a Neurons: metabolism
|2 MeSH
650 _ 2 |a HEK293 Cells
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700 1 _ |a Sadanandan, Nidish Ponath
|0 0000-0003-1534-831X
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700 1 _ |a Schneider, Martin Winfried
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700 1 _ |a Kuehn, Enrico
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700 1 _ |a Leemisa, Andries Napo
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700 1 _ |a De Zio, Roberta
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700 1 _ |a Meyer, Niklas
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700 1 _ |a Busse, Wayne
|0 0009-0006-4364-7914
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700 1 _ |a Erlinghagen, Bela
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700 1 _ |a Adenauer, Lea
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700 1 _ |a Opitz, Thoralf
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700 1 _ |a Bönigk, Wolfgang
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700 1 _ |a Schiewer, Enrico
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700 1 _ |a Heer, Jonas
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700 1 _ |a Schmitz, Dietmar
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700 1 _ |a Vierock, Johannes
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700 1 _ |a Beck, Heinz
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700 1 _ |a Hegemann, Peter
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700 1 _ |a Baier, Herwig
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700 1 _ |a Schneider-Warme, Franziska
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700 1 _ |a Sierra, Yinth Andrea Bernal
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700 1 _ |a Seifert, Reinhard
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773 _ _ |a 10.1126/sciadv.adx1195
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