Molecular and cellular basis of sodium sensing in Drosophila labellumopen access
- Authors
- Wayessa Rahel Asefa; Jin-Nyeong Woo; Kim, Seon Yeong; Hyungjun Choi; Hayeon Sung; Min Sung Choi; Minkook Choi; Sung-Eun Yoon; Young-Joon Kim; Byung-Chang Suh; Kang, Kyeong Jin; Jae Young Kwon
- Issue Date
- Jul-2024
- Publisher
- CELL PRESS
- Citation
- ISCIENCE, v.27, no.7
- Journal Title
- ISCIENCE
- Volume
- 27
- Number
- 7
- URI
- http://scholarworks.bwise.kr/kbri/handle/2023.sw.kbri/1184
- DOI
- 10.1016/j.isci.2024.110248
- ISSN
- 2589-0042
- Abstract
- Appropriate ingestion of salt is essential for physiological processes such as ionic homeostasis and neuronal activity. Generally, low concentrations of salt elicit attraction, while high concentrations elicit aversive responses. Here, we observed that sugar neurons in the L sensilla of the Drosophila labellum cf. responses to NaCl, while sugar neurons in the S-c sensilla do not respond to NaCl, suggesting that gustatory receptor neurons involved in NaCl sensing may employ diverse molecular mechanisms. Through an RNAi screen of the entire Ir and ppk gene families and molecular genetic approaches, we identified IR76b, IR25a, and IR56b as necessary components for NaCl sensing in the Drosophila labellum. Co-expression of these three IRs in heterologous systems such as S2 cells or Xenopus oocytes resulted in a current in response to sodium stimulation, suggesting formation of a sodium-sensing complex. Our results should provide insights for research on the diverse combinations constituting salt receptor complexes.
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Collections - 연구본부 > 신경·혈관 단위체 연구그룹 > 1. Journal Articles
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