| 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
|
| Resource |
| Mice |
RBRC05154 |
