RRC ID 60997
Author Inagaki S, Iwata R, Iwamoto M, Imai T.
Title Widespread Inhibition, Antagonism, and Synergy in Mouse Olfactory Sensory Neurons In Vivo.
Journal Cell Rep
Abstract Sensory information is selectively or non-selectively enhanced and inhibited in the brain, but it remains unclear whether and how this occurs at the most peripheral level. Using in vivo calcium imaging of mouse olfactory bulb and olfactory epithelium in wild-type and mutant animals, we show that odors produce not only excitatory but also inhibitory responses in olfactory sensory neurons (OSNs). Heterologous assays indicate that odorants can act as agonists to some but inverse agonists to other odorant receptors. We also demonstrate that responses to odor mixtures are extensively suppressed or enhanced in OSNs. When high concentrations of odors are mixed, widespread antagonism suppresses the overall response amplitudes and density. In contrast, a mixture of low concentrations of odors often produces synergistic effects and boosts the faint odor inputs. Thus, odor responses are extensively tuned by inhibition, antagonism, and synergy at the most peripheral level, contributing to robust sensory representations.
Volume 31(13)
Pages 107814
Published 2020-6-30
DOI 10.1016/j.celrep.2020.107814
PII S2211-1247(20)30795-6
Description 寄託者より分与
PMID 32610120
MeSH Animals Axons / physiology Biological Assay Mice, Transgenic Odorants Olfactory Mucosa / metabolism Olfactory Receptor Neurons / physiology* Presynaptic Terminals / physiology Receptors, Odorant / metabolism
IF 8.109
Times Cited 0
Mice RBRC05154