The mechanoreceptor DEG-1 regulates cold tolerance in Caenorhabditis elegans.
査読あり
国際誌
Natsune Takagaki, Akane Ohta, Kohei Ohnishi, Akira Kawanabe, Yohei Minakuchi, Atsushi Toyoda, Yuichiro Fujiwara, Atsushi Kuhara
EMBO reports
e48671
(
Article
)
e48671
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12
2020年2月
担当区分:責任著者
Caenorhabditis elegans mechanoreceptors located in ASG sensory neurons have been found to sense ambient temperature, which is a key trait for animal survival. Here, we show that experimental loss of xanthine dehydrogenase (XDH-1) function in AIN and AVJ interneurons results in reduced cold tolerance and atypical neuronal response to changes in temperature. These interneurons connect with upstream neurons such as the mechanoreceptor-expressing ASG. Ca2+ imaging revealed that ASG neurons respond to warm temperature via the mechanoreceptor DEG-1, a degenerin/epithelial Na+ channel (DEG/ENaC), which in turn affects downstream AIN and AVJ circuits. Ectopic expression of DEG-1 in the ASE gustatory neuron results in the acquisition of warm sensitivity, while electrophysiological analysis revealed that DEG-1 and human MDEG1 were involved in warm sensation. Taken together, these results suggest that cold tolerance is regulated by mechanoreceptor-mediated circuit calculation.
DOI:
10.15252/embr.201948671
PubMed
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