[PDF][PDF] Vertebrate cone opsins enable sustained and highly sensitive rapid control of Gi/o signaling in anxiety circuitry

OA Masseck, K Spoida, D Dalkara, T Maejima… - Neuron, 2014 - cell.com
… However, by using vertebrate opsins, we could repetitively activate K+ conductances in
HEK293 cells and modulate neuronal activity in brain slices and in vivo without a decline in …

Gq/5-HT2c receptor signals activate a local GABAergic inhibitory feedback circuit to modulate serotonergic firing and anxiety in mice

K Spoida, OA Masseck, ES Deneris… - Proceedings of the …, 2014 - National Acad Sciences
Serotonin 2c receptors (5-HT 2c -Rs) are drug targets for certain mental disorders, including
schizophrenia, depression, and anxiety. 5-HT 2c -Rs are expressed throughout the brain, …

[PDF][PDF] Melanopsin variants as intrinsic optogenetic on and off switches for transient versus sustained activation of G protein pathways

K Spoida, D Eickelbeck, R Karapinar, T Eckhardt… - Current Biology, 2016 - cell.com
Spoida et al. compare the biophysical properties and optogenetic use of mouse and human
melanopsin variants. Their findings reveal that hOpn4L and mOpn4L are new optogenetic …

Separable gain control of ongoing and evoked activity in the visual cortex by serotonergic input

Z Azimi, R Barzan, K Spoida, T Surdin, P Wollenweber… - Elife, 2020 - elifesciences.org
Controlling gain of cortical activity is essential to modulate weights between internal ongoing
communication and external sensory drive. Here, we show that serotonergic input has …

Light‐and drug‐activated G‐protein‐coupled receptors to control intracellular signalling

OA Masseck, JM Rubelowski, K Spoida… - Experimental …, 2011 - Wiley Online Library
… of the G i/o pathway by vRh induces the activation of K + conductances, such as GIRK,
which results in the efflux of K + and the hyperpolarization of the cell membrane. The bottom …

[HTML][HTML] Constitutive 5-HT2C receptor knock-out facilitates fear extinction through altered activity of a dorsal raphe-bed nucleus of the stria terminalis pathway

ST Süß, LM Olbricht, S Herlitze, K Spoida - Translational Psychiatry, 2022 - nature.com
Serotonin 2C receptors (5-HT2CRs) are widely distributed throughout the brain and are
strongly implicated in the pathophysiology of anxiety disorders such as post-traumatic stress …

[HTML][HTML] CaMello-XR enables visualization and optogenetic control of Gq/11 signals and receptor trafficking in GPCR-specific domains

…, K Gerwert, D Jancke, P Wahle, K Spoida… - Communications …, 2019 - nature.com
The signal specificity of G protein-coupled receptors (GPCRs) including serotonin receptors
(5-HT-R) depends on the trafficking and localization of the GPCR within its subcellular …

[HTML][HTML] Analysis of the Territorial Aggressive Behavior of the Bioluminescent Flashlight Fish Photoblepharon steinitzi in the Red Sea

J Hellinger, P Jägers, K Spoida, LC Weiss… - Frontiers in Marine …, 2020 - frontiersin.org
The flashlight fish Photoblepharon steinitzi inhabit coral reef caves in the Red Sea. During
the night they dwell alone or in pairs near their cave entrance, characteristic of territorial like …

Design of an ultrafast G protein switch based on a mouse melanopsin variant

…, T Surdin, M Grömmke, MD Mark, K Spoida… - …, 2019 - Wiley Online Library
The primary goal of optogenetics is the light‐controlled noninvasive and specific manipulation
of various cellular processes. Herein, we present a hybrid strategy for targeted protein …

Optogenetic approaches for controlling neuronal activity and plasticity

…, R Karapinar, S Herlitze, K Spoida - Handbook of Behavioral …, 2018 - Elsevier
Optogenetics combines the use of light-sensitive proteins with genetic targeting strategies.
In recent years, the expanded optogenetic toolbox has broadened the understanding of cell …