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Sato S, Magaji AM, Tominaga M, Sokabe T. Avoidance of thiazoline compound depends on multiple sensory pathways mediated by TrpA1 and ORs in Drosophila. Front Mol Neurosci 2023; 16:1249715. [PMID: 38188198 PMCID: PMC10771277 DOI: 10.3389/fnmol.2023.1249715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 11/30/2023] [Indexed: 01/09/2024] Open
Abstract
Transient receptor potential (TRP) channels are primary sensory molecules in animals and are involved in detecting a diverse range of physical and chemical cues in the environments. Considering the crucial role of TRPA1 channels in nocifensive behaviors and aversive responses across various insect species, activators of TRPA1 are promising candidates for insect pest control. In this study, we demonstrate that 2-methylthiazoline (2MT), an artificial volatile thiazoline compound originally identified as a stimulant for mouse TRPA1, can be utilized as a novel repellent for fruit flies, Drosophila melanogaster. We observed that 2MT induced strong, dose-dependent avoidance behaviors in adult males, regardless of their feeding states, as well as egg laying behavior in females. These aversive responses were mediated by contact chemosensation via TrpA1 and olfaction via odorant receptors. Knocking down TrpA1 revealed the essential roles of bitter taste neurons and nociceptive neurons in the legs and labellum. Furthermore, among five isoforms, TrpA1-C and TrpA1-D exclusively contributed to the aversiveness of 2MT. We also discovered that these isoforms were directly activated by 2MT through covalent modification of evolutionarily conserved cysteine residues. In conclusion, we have identified 2MT as a stimulant for multiple sensory pathways, triggering aversive behaviors in fruit flies. We propose that 2MT and related chemicals may serve as potential resources for developing novel insect repellents.
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Affiliation(s)
- Shoma Sato
- Thermal Biology Group, Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, Okazaki, Japan
- Division of Cell Signaling, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, Japan
| | - Aliyu Mudassir Magaji
- Thermal Biology Group, Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, Okazaki, Japan
- Division of Cell Signaling, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, Japan
- Graduate Institute for Advanced Studies, SOKENDAI, Hayama, Japan
| | - Makoto Tominaga
- Thermal Biology Group, Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, Okazaki, Japan
- Division of Cell Signaling, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, Japan
- Graduate Institute for Advanced Studies, SOKENDAI, Hayama, Japan
| | - Takaaki Sokabe
- Thermal Biology Group, Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, Okazaki, Japan
- Division of Cell Signaling, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, Japan
- Graduate Institute for Advanced Studies, SOKENDAI, Hayama, Japan
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Shimomura K, Oikawa H, Yamamoto K, Terajima T, Yajima S, Tomizawa M. Noxious chemical discrimination by Tribolium castaneum TRPA1 channel in the HEK293 cell expression system. CURRENT RESEARCH IN INSECT SCIENCE 2023; 4:100066. [PMID: 37559797 PMCID: PMC10407194 DOI: 10.1016/j.cris.2023.100066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 07/22/2023] [Accepted: 07/24/2023] [Indexed: 08/11/2023]
Abstract
Nociception is the sensory perception of noxious chemical stimuli. Repellent behavior to avoid noxious stimuli is indispensable for survival, and this mechanism has been evolutionarily conserved across a wide range of species, from mammals to insects. The transient receptor potential ankyrin 1 (TRPA1) channel is one of the most conserved noxious chemical sensors. Here, we describe the heterologous stable expression of Tribolium castaneum TRPA1 (TcTRPA1) in human embryonic kidney (HEK293) cells. The intracellular Ca2+ influx was measured when two compounds, citronellal and l-menthol, derived from plant essential oils, were applied in vitro using a fluorescence assay. The analysis revealed that citronellal evoked Ca2+ influx dose-dependently for TcTRPA1, whereas l-menthol did not. In combination with our present and previous results of the avoidance-behavioral assay at the organism level, we suggest that TcTRPA1 discriminates between these two toxic compounds, and diversification in the chemical nociception selectivity has occurred in TRPA1 channel among insect taxa.
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Affiliation(s)
- Kenji Shimomura
- Department of Chemistry for Life Sciences and Agriculture, Tokyo University of Agriculture, Tokyo, 156-8502, Japan
| | - Hinoki Oikawa
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, 156-8502, Japan
| | - Kosuke Yamamoto
- Department of Molecular Microbiology, Tokyo University of Agriculture, Tokyo, 156-8502, Japan
| | - Takehito Terajima
- Department of Chemistry for Life Sciences and Agriculture, Tokyo University of Agriculture, Tokyo, 156-8502, Japan
| | - Shunsuke Yajima
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, 156-8502, Japan
| | - Motohiro Tomizawa
- Department of Chemistry for Life Sciences and Agriculture, Tokyo University of Agriculture, Tokyo, 156-8502, Japan
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Yang Y, Guo W, Wang M, Zhang D. Genome-Wide Characterization and Gene Expression Analysis of TRP Channel Superfamily Genes in the Migratory Locust, Locusta migratoria. Genes (Basel) 2023; 14:1427. [PMID: 37510331 PMCID: PMC10379062 DOI: 10.3390/genes14071427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 07/05/2023] [Accepted: 07/08/2023] [Indexed: 07/30/2023] Open
Abstract
The TRP channel superfamily was widely found in multiple species. They were involved in many extrasensory perceptions and were important for adapting to the environment. The migratory locust was one of the worldwide agricultural pests due to huge damage. In this study, we identified 13 TRP superfamily genes in the locust genome. The number of LmTRP superfamily genes was consistent with most insects. The phylogenetic tree showed that LmTRP superfamily genes could be divided into seven subfamilies. The conserved motifs and domains analysis documented that LmTRP superfamily genes contained unique characteristics of the TRP superfamily. The expression profiles in different organs identified LmTRP superfamily genes in the head and antennae, which were involved in sensory function. The expression pattern of different life phases also demonstrated that LmTRP superfamily genes were mainly expressed in third-instar nymphs and male adults. Our findings could contribute to a better understanding of the TRP channel superfamily gene and provide potential targets for insect control.
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Affiliation(s)
- Yong Yang
- The International Centre for Precision Environmental Health and Governance, The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Wenhui Guo
- The International Centre for Precision Environmental Health and Governance, The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Mingjun Wang
- The International Centre for Precision Environmental Health and Governance, The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Daochuan Zhang
- The International Centre for Precision Environmental Health and Governance, The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China
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