| RRC ID |
80757
|
| 著者 |
Tang LTH, Lee GA, Cook SJ, Ho J, Potter CC, Bülow HE.
|
| タイトル |
Anatomical restructuring of a lateralized neural circuit during associative learning by asymmetric insulin signaling.
|
| ジャーナル |
Curr Biol
|
| Abstract |
Studies of neuronal connectivity in model organisms, i.e., of their connectomes, have been instrumental in dissecting the structure-function relationship of nervous systems. However, the limited sample size of these studies has impeded analyses into how variation of connectivity across populations may influence circuit architecture and behavior. Moreover, little is known about how experiences induce changes in circuit architecture. Here, we show that an asymmetric salt-sensing circuit in the nematode Caenorhabditis elegans exhibits variation that predicts the animals' salt preferences and undergoes restructuring during salt associative learning. Naive worms memorize and prefer the salt concentration they experience in the presence of food through a left-biased neural network architecture. However, animals conditioned at elevated salt concentrations change this left-biased network to a right-biased network. This change in circuit architecture occurs through the addition of new synapses in response to asymmetric, paracrine insulin signaling. Therefore, experience-dependent changes in an animal's neural connectome are induced by insulin signaling and are fundamental to learning and behavior.
|
| 巻・号 |
33(18)
|
| ページ |
3835-3850.e6
|
| 公開日 |
2023-9-25
|
| DOI |
10.1016/j.cub.2023.07.041
|
| PII |
S0960-9822(23)00982-X
|
| PMID |
37591249
|
| PMC |
PMC10639090
|
| MeSH |
Animals
Caenorhabditis elegans / physiology
Caenorhabditis elegans Proteins* / physiology
Chemotaxis / physiology
Insulin
Sodium Chloride
Synapses
|
| リソース情報 |
| 線虫 |
tm2416
tm1896
tm2614
tm718 |
