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@ARTICLE{Chen:139736,
author = {Chen, Xufeng and Aslam, Muhammad and Gollisch, Tim and
Allen, Kevin and Engelhardt, Jakob},
title = {{CKAMP}44 modulates integration of visual inputs in the
lateral geniculate nucleus.},
journal = {Nature Communications},
volume = {9},
number = {1},
issn = {2041-1723},
address = {[London]},
publisher = {Nature Publishing Group UK},
reportid = {DZNE-2020-06058},
pages = {261},
year = {2018},
abstract = {Relay neurons in the dorsal lateral geniculate nucleus
(dLGN) receive excitatory inputs from retinal ganglion cells
(RGCs). Retinogeniculate synapses are characterized by a
prominent short-term depression of AMPA receptor
(AMPAR)-mediated currents, but the underlying mechanisms and
its function for visual integration are not known. Here we
identify CKAMP44 as a crucial auxiliary subunit of AMPARs in
dLGN relay neurons, where it increases AMPAR-mediated
current amplitudes and modulates gating of AMPARs.
Importantly, CKAMP44 is responsible for the distinctive
short-term depression in retinogeniculate synapses by
reducing the rate of recovery from desensitization of
AMPARs. Genetic deletion of CKAMP44 strongly reduces
synaptic short-term depression, which leads to increased
spike probability of relay neurons when activated with
high-frequency inputs from retinogeniculate synapses.
Finally, in vivo recordings reveal augmented ON- and
OFF-responses of dLGN neurons in CKAMP44 knockout
(CKAMP44-/-) mice, demonstrating the importance of CKAMP44
for modulating synaptic short-term depression and visual
input integration.},
keywords = {Animals / Electroretinography / Excitatory Postsynaptic
Potentials: physiology / Female / Geniculate Bodies:
cytology / Geniculate Bodies: metabolism / Geniculate
Bodies: physiology / Mice, Inbred C57BL / Mice, Knockout /
Nerve Tissue Proteins: genetics / Nerve Tissue Proteins:
metabolism / Neurons: metabolism / Neurons: physiology /
Photic Stimulation / Receptors, AMPA: metabolism / Retina:
cytology / Retina: metabolism / Retina: physiology /
Synapses: physiology / Synaptic Transmission: genetics /
Synaptic Transmission: physiology / CKAMP44 protein, mouse
(NLM Chemicals) / Nerve Tissue Proteins (NLM Chemicals) /
Receptors, AMPA (NLM Chemicals)},
cin = {AG Engelhardt},
ddc = {500},
cid = {I:(DE-2719)1013023},
pnm = {341 - Molecular Signaling (POF3-341)},
pid = {G:(DE-HGF)POF3-341},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29343769},
pmc = {pmc:PMC5772470},
doi = {10.1038/s41467-017-02415-1},
url = {https://pub.dzne.de/record/139736},
}