Adhesion GPCR Latrophilin 3 regulates synaptic function of cone photoreceptors in a trans-synaptic manner.
adhesion GPCR
horizontal cells
retina
synapses
vision
Journal
Proceedings of the National Academy of Sciences of the United States of America
ISSN: 1091-6490
Titre abrégé: Proc Natl Acad Sci U S A
Pays: United States
ID NLM: 7505876
Informations de publication
Date de publication:
09 11 2021
09 11 2021
Historique:
accepted:
23
09
2021
entrez:
4
11
2021
pubmed:
5
11
2021
medline:
15
12
2021
Statut:
ppublish
Résumé
Cone photoreceptors mediate daylight vision in vertebrates. Changes in neurotransmitter release at cone synapses encode visual information and is subject to precise control by negative feedback from enigmatic horizontal cells. However, the mechanisms that orchestrate this modulation are poorly understood due to a virtually unknown landscape of molecular players. Here, we report a molecular player operating selectively at cone synapses that modulates effects of horizontal cells on synaptic release. Using an unbiased proteomic screen, we identified an adhesion GPCR Latrophilin3 (LPHN3) in horizontal cell dendrites that engages in transsynaptic control of cones. We detected and characterized a prominent splice isoform of LPHN3 that excludes a element with inhibitory influence on transsynaptic interactions. A gain-of-function mouse model specifically routing LPHN3 splicing to this isoform but not knockout of LPHN3 diminished Ca
Identifiants
pubmed: 34732574
pii: 2106694118
doi: 10.1073/pnas.2106694118
pmc: PMC8609308
pii:
doi:
Substances chimiques
Calcium Channels
0
LPHN3 protein, mouse
0
Protein Isoforms
0
Proteome
0
Receptors, G-Protein-Coupled
0
Receptors, Peptide
0
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : NEI NIH HHS
ID : R01 EY028033
Pays : United States
Organisme : NEI NIH HHS
ID : P30 EY005722
Pays : United States
Organisme : NEI NIH HHS
ID : R01 EY024694
Pays : United States
Organisme : NEI NIH HHS
ID : R29 EY010542
Pays : United States
Organisme : NEI NIH HHS
ID : K99 EY030554
Pays : United States
Organisme : NEI NIH HHS
ID : R01 EY018139
Pays : United States
Organisme : NEI NIH HHS
ID : R01 EY031445
Pays : United States
Organisme : NEI NIH HHS
ID : R01 EY010542
Pays : United States
Organisme : NEI NIH HHS
ID : F32 EY026344
Pays : United States
Déclaration de conflit d'intérêts
The authors declare no competing interest.
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