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Song J, Yu Y, Yan Z, Xiao S, Zhao X, Wang F, Fang Q, Ye G. Chloride intracellular channel gene knockdown induces insect cell lines death and level increases of intracellular calcium ions. Front Physiol 2023; 14:1217954. [PMID: 37485065 PMCID: PMC10356983 DOI: 10.3389/fphys.2023.1217954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 06/28/2023] [Indexed: 07/25/2023] Open
Abstract
Chloride intracellular channel (CLIC) is a member of the chloride channel protein family for which growing evidence supports a pivotal role in fundamental cellular events. However, the physiological function of CLIC in insects is still rarely uncovered. The ovary-derived High Five (Hi-5) cell line isolated from the cabbage looper (Trichoplusia ni) is widely used in laboratories. Here, we studied both characteristics and functions of CLIC in Hi-5 cells (TnCLIC). We identified the TnCLIC gene in Hi-5 cells and annotated highly conserved CLIC proteins in most insect species. After RNA interference of TnCLIC, the phenomenon of significantly increased cell death suggests that the TnCLIC protein is essential for the survival of Hi-5 cells. The same lethal effect was also observed in Spodoptera frugiperda 9 and Drosophila melanogaster Schneider 2 cells after CLIC knockdown. Furthermore, we found that this kind of cell death was accompanied by increases in intracellular calcium ions after TnCLIC knockdown with the transcriptomic analyses and the detection of calcium levels. Our results provide insights into insect CLIC as a key factor for cell survival and lay the foundation for the cell death mechanism.
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Affiliation(s)
- Jiqiang Song
- State Key Laboratory of Rice Biology and Breeding & Ministry of Agricultural and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Yanping Yu
- State Key Laboratory of Rice Biology and Breeding & Ministry of Agricultural and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Zhichao Yan
- Department of Entomology, Nanjing Agricultural University, Nanjing, China
| | - Shan Xiao
- State Key Laboratory of Rice Biology and Breeding & Ministry of Agricultural and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Xianxin Zhao
- State Key Laboratory of Rice Biology and Breeding & Ministry of Agricultural and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Fang Wang
- State Key Laboratory of Rice Biology and Breeding & Ministry of Agricultural and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Qi Fang
- State Key Laboratory of Rice Biology and Breeding & Ministry of Agricultural and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Gongyin Ye
- State Key Laboratory of Rice Biology and Breeding & Ministry of Agricultural and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
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Zhang X, Fan Z, Zhang R, Kong X, Liu F, Fang J, Zhang S, Zhang Z. Bacteria-mediated RNAi for managing fall webworm, Hyphantria cunea: screening target genes and analyzing lethal effect. PEST MANAGEMENT SCIENCE 2023; 79:1566-1577. [PMID: 36527705 DOI: 10.1002/ps.7326] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/23/2022] [Accepted: 12/17/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND The fall webworm, Hyphantria cunea, an invasive forest pest found worldwide, causes serious ecological and economic damage. Currently, the application of chemical pesticides is the most widely used strategy for H. cunea management. However, long-term pesticide use leads to pest resistance, phytotoxicity, human poisoning, and environmental deterioration. RNA interference (RNAi) technology may provide an environmentally friendly and cost-effective option for H. cunea control. However, effective RNAi targets and application methods for H. cunea are lacking. RESULTS We screened and obtained two highly effective RNAi targets, vATPase A (V-type proton ATPase catalytic subunit A) and Rop (Ras opposite), from 23 candidate genes, using initial and repeat screening tests with the double-stranded RNA (dsRNA) injection method. RNAi against these two genes was effective in suppressing each target messenger RNA level and interfering with larval growth, leading to significant larval mortality and pupal abnormality. For massive production of dsRNA and practical application of RNAi technology in H. cunea, transformed bacteria expressing dsRNAs of these two genes were prepared using the L4440 expression vector and HT115 strain of Escherichia coli. Oral administration of bacterially expressed dsRNA targeting vATPase A and Rop genes showed high mortality and the same malformed phenotype as the injection treatment. To further investigate the lethal effects of targeting these two genes on larval development, transcriptome sequencing (RNA-seq) was performed on RNAi samples. The results demonstrated disorders in multiple metabolic pathways, and the expression levels of most genes related to insect cuticle metabolism were significantly different, which may directly threaten insect survival. In addition, some new findings were obtained via RNA-seq analysis; for example, the progesterone-mediated oocyte maturation and oocyte meiosis processes were significantly different after silencing vATPase A, and the insect olfactory protein-related genes were significantly downregulated after dsHcRop treatment. CONCLUSION vATPase A and Rop are two highly effective RNAi-mediated lethal genes in H. cunea that regulate insect growth via multiple metabolic pathways. Oral delivery of bacterially expressed dsRNA specific to vATPase A and Rop can potentially be used for RNAi-based H. cunea management. This is the first study to apply bacteria-mediated RNAi for the control of this invasive pest, which is a major step forward in the application of the RNAi technology in H. cunea. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Xun Zhang
- Key Laboratory of Forest Protection of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing, China
| | - Zhizhi Fan
- Key Laboratory of Forest Protection of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing, China
| | - Rong Zhang
- Key Laboratory of Forest Protection of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing, China
| | - Xiangbo Kong
- Key Laboratory of Forest Protection of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing, China
| | - Fu Liu
- Key Laboratory of Forest Protection of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing, China
| | - Jiaxing Fang
- Key Laboratory of Forest Protection of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing, China
| | - Sufang Zhang
- Key Laboratory of Forest Protection of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing, China
| | - Zhen Zhang
- Key Laboratory of Forest Protection of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing, China
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Huo X, Ma H, Zhu H, Liu J, Zhou Y, Zhou X, Liu Z. Identification and pharmacological characterization of the voltage-gated potassium channel Shab in diamondback moth, Plutella xylostella. PEST MANAGEMENT SCIENCE 2023; 79:1251-1260. [PMID: 36418849 DOI: 10.1002/ps.7300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 10/12/2022] [Accepted: 11/24/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Voltage-gated potassium channel Kv2 is the primarily delayed rectifier in insect nerves and muscles involved in several crucial biological processes, including action potential regulation, photoreceptor performance, and larval locomotor. It is a potential molecular target for developing a novel pesticide for mosquitos. However, there are few studies on the Kv2 channel in agricultural pests. RESULTS The only α-subunit gene of the Kv2 channel in Plutella xylostella (L.), PxShab, was cloned, and its expression profile was analyzed. The relative expression level of PxShab was highest in the pupal stage of both sexes and male adults but lowest in female adults. Meanwhile, PxShab had the highest expression in the head in both larvae and adults. Then, PxShab was stably expressed in the HEK-293 T cell line. Whole cell patch clamp recordings showed an outward current whose current-voltage relationship conformed to a typical delayed-rectifier potassium channel. 20 μM quinidine could effectively inhibit the potassium current, while the channel was insensitive to 4-AP even at 10 mM. Several potential compounds and botanical pesticides were assessed, and carvedilol (IC50 = 0.53 μM) and veratrine (IC50 = 2.22 μM) had a good inhibitory effect on the channel. CONCLUSION This study revealed the pharmacological properties of PxShab and screened out several high potency inhibitors, which laid the foundation for further functional research of PxShab and provides new insight into designing novel insecticides. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Xiaoyi Huo
- Longping Branch, College of Biology, Hunan University, Changsha, China
- Institute of Agricultural Biotechnology, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Haihao Ma
- Institute of Agricultural Biotechnology, Hunan Academy of Agricultural Sciences, Changsha, China
- Key Laboratory of Pesticide Assessment, Ministry of Agriculture and Rural Affairs, Changsha, China
| | - Hang Zhu
- Institute of Agricultural Biotechnology, Hunan Academy of Agricultural Sciences, Changsha, China
- Key Laboratory of Pesticide Assessment, Ministry of Agriculture and Rural Affairs, Changsha, China
| | - Jia Liu
- Institute of Agricultural Biotechnology, Hunan Academy of Agricultural Sciences, Changsha, China
- Key Laboratory of Pesticide Assessment, Ministry of Agriculture and Rural Affairs, Changsha, China
| | - Yong Zhou
- Institute of Agricultural Biotechnology, Hunan Academy of Agricultural Sciences, Changsha, China
- Key Laboratory of Pesticide Assessment, Ministry of Agriculture and Rural Affairs, Changsha, China
| | - Xiaomao Zhou
- Longping Branch, College of Biology, Hunan University, Changsha, China
- Institute of Agricultural Biotechnology, Hunan Academy of Agricultural Sciences, Changsha, China
- Key Laboratory of Pesticide Assessment, Ministry of Agriculture and Rural Affairs, Changsha, China
| | - Zheming Liu
- Institute of Agricultural Biotechnology, Hunan Academy of Agricultural Sciences, Changsha, China
- Key Laboratory of Pesticide Assessment, Ministry of Agriculture and Rural Affairs, Changsha, China
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Hapairai LK, Mysore K, Sun L, Li P, Wang CW, Scheel ND, Lesnik A, Scheel MP, Igiede J, Wei N, Severson DW, Duman-Scheel M. Characterization of an adulticidal and larvicidal interfering RNA pesticide that targets a conserved sequence in mosquito G protein-coupled dopamine 1 receptor genes. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2020; 120:103359. [PMID: 32169582 PMCID: PMC8744133 DOI: 10.1016/j.ibmb.2020.103359] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 01/29/2020] [Accepted: 02/27/2020] [Indexed: 05/14/2023]
Abstract
G protein-coupled receptors (GPCRs), key regulators of a variety of critical biological processes, are attractive targets for insecticide development. Given the importance of these receptors in many organisms, including humans, it is critical that novel pesticides directed against GPCRs are designed to be species-specific. Here, we present characterization of an interfering RNA pesticide (IRP) targeting the mosquito GPCR-encoding dopamine 1 receptor (dop1) genes. A small interfering RNA corresponding to dop1 was identified in a screen for IRPs that kill Aedes aegypti during both the adult and larval stages. The 25 bp sequence targeted by this IRP is conserved in the dop1 genes of multiple mosquito species, but not in non-target organisms, indicating that it could function as a biorational mosquito insecticide. Aedes aegypti adults treated through microinjection or attractive toxic sugar bait delivery of small interfering RNA corresponding to the target site exhibited severe neural and behavioral defects and high levels of adult mortality. Likewise, A. aegypti larval consumption of dried inactivated yeast tablets prepared from a Saccharomyces cerevisiae strain engineered to express short hairpin RNA corresponding to the dop1 target site resulted in severe neural defects and larval mortality. Aedes albopictus and Anopheles gambiae adult and larval mortality was also observed following treatment with dop1 IRPs, which were not toxic to non-target arthropods. The results of this investigation indicate that dop1 IRPs can be used for species-specific targeting of dop1 GPCRs and may represent a new biorational strategy for control of both adult and larval mosquitoes.
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Affiliation(s)
- Limb K Hapairai
- Indiana University School of Medicine, Department of Medical and Molecular Genetics, Raclin-Carmichael Hall, 1234 Notre Dame Ave., South Bend, IN, 46617, USA; The University of Notre Dame Eck Institute for Global Health, Notre Dame, IN, 46556, USA.
| | - Keshava Mysore
- Indiana University School of Medicine, Department of Medical and Molecular Genetics, Raclin-Carmichael Hall, 1234 Notre Dame Ave., South Bend, IN, 46617, USA; The University of Notre Dame Eck Institute for Global Health, Notre Dame, IN, 46556, USA.
| | - Longhua Sun
- Indiana University School of Medicine, Department of Medical and Molecular Genetics, Raclin-Carmichael Hall, 1234 Notre Dame Ave., South Bend, IN, 46617, USA; The University of Notre Dame Eck Institute for Global Health, Notre Dame, IN, 46556, USA.
| | - Ping Li
- Indiana University School of Medicine, Department of Medical and Molecular Genetics, Raclin-Carmichael Hall, 1234 Notre Dame Ave., South Bend, IN, 46617, USA; The University of Notre Dame Eck Institute for Global Health, Notre Dame, IN, 46556, USA.
| | - Chien-Wei Wang
- The University of Notre Dame Eck Institute for Global Health, Notre Dame, IN, 46556, USA; The University of Notre Dame Department of Civil and Environmental Engineering and Earth Sciences, Cushing Hall, Notre Dame, IN, 46556, USA.
| | - Nicholas D Scheel
- The University of Notre Dame Eck Institute for Global Health, Notre Dame, IN, 46556, USA; The University of Notre Dame Department of Biological Sciences, Galvin Life Sciences, Notre Dame, IN, 46556, USA.
| | - Alexandra Lesnik
- The University of Notre Dame Eck Institute for Global Health, Notre Dame, IN, 46556, USA.
| | - Max P Scheel
- Indiana University School of Medicine, Department of Medical and Molecular Genetics, Raclin-Carmichael Hall, 1234 Notre Dame Ave., South Bend, IN, 46617, USA; The University of Notre Dame Eck Institute for Global Health, Notre Dame, IN, 46556, USA.
| | - Jessica Igiede
- The University of Notre Dame Eck Institute for Global Health, Notre Dame, IN, 46556, USA; The University of Notre Dame Department of Biological Sciences, Galvin Life Sciences, Notre Dame, IN, 46556, USA.
| | - Na Wei
- The University of Notre Dame Eck Institute for Global Health, Notre Dame, IN, 46556, USA; The University of Notre Dame Department of Civil and Environmental Engineering and Earth Sciences, Cushing Hall, Notre Dame, IN, 46556, USA.
| | - David W Severson
- Indiana University School of Medicine, Department of Medical and Molecular Genetics, Raclin-Carmichael Hall, 1234 Notre Dame Ave., South Bend, IN, 46617, USA; The University of Notre Dame Eck Institute for Global Health, Notre Dame, IN, 46556, USA; The University of Notre Dame Department of Biological Sciences, Galvin Life Sciences, Notre Dame, IN, 46556, USA; The University of the West Indies, Department of Life Sciences, St. Augustine, Trinidad, Trinidad and Tobago.
| | - Molly Duman-Scheel
- Indiana University School of Medicine, Department of Medical and Molecular Genetics, Raclin-Carmichael Hall, 1234 Notre Dame Ave., South Bend, IN, 46617, USA; The University of Notre Dame Eck Institute for Global Health, Notre Dame, IN, 46556, USA; The University of Notre Dame Department of Biological Sciences, Galvin Life Sciences, Notre Dame, IN, 46556, USA.
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Kamruzzaman ASM, Mikani A, Mohamed AA, Elgendy AM, Takeda M. Crosstalk among Indoleamines, Neuropeptides and JH/20E in Regulation of Reproduction in the American Cockroach, Periplaneta americana. INSECTS 2020; 11:insects11030155. [PMID: 32121505 PMCID: PMC7143859 DOI: 10.3390/insects11030155] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 02/25/2020] [Accepted: 02/26/2020] [Indexed: 01/29/2023]
Abstract
Although the regulation of vitellogenesis in insects has been mainly discussed in terms of ‘classical’ lipid hormones, juvenile hormone (JH), and 20-hydroxyecdysone (20E), recent data support the notion that this process must be adjusted in harmony with a nutritional input/reservoir and involvement of certain indoleamines and neuropeptides in regulation of such process. This study focuses on crosstalks among these axes, lipid hormones, monoamines, and neuropeptides in regulation of vitellogenesis in the American cockroach Periplaneta americana with novel aspects in the roles of arylalkylamine N-acetyltransferase (aaNAT), a key enzyme in indoleamine metabolism, and the enteroendocrine peptides; crustacean cardioactive peptide (CCAP) and short neuropeptide F (sNPF). Double-stranded RNA against aaNAT (dsRNAaaNAT) was injected into designated-aged females and the effects were monitored including the expressions of aaNAT itself, vitellogenin 1 and 2 (Vg1 and Vg2) and the vitellogenin receptor (VgR) mRNAs, oocyte maturation and changes in the hemolymph peptide concentrations. Effects of peptides application and 20E were also investigated. Injection of dsRNAaaNAT strongly suppressed oocyte maturation, transcription of Vg1, Vg2, VgR, and genes encoding JH acid- and farnesoate O-methyltransferases (JHAMT and FAMeT, respectively) acting in the JH biosynthetic pathway. However, it did not affect hemolymph concentrations of CCAP and sNPF. Injection of CCAP stimulated, while sNPF suppressed oocyte maturation and Vgs/VgR transcription, i.e., acting as allatomedins. Injection of CCAP promoted, while sNPF repressed ecdysteroid (20E) synthesis, particularly at the second step of Vg uptake. 20E also affected the JH biosynthetic pathway and Vg/VgR synthesis. The results revealed that on the course of vitellogenesis, JH- and 20E-mediated regulation occurs downstream to indoleamines- and peptides-mediated regulations. Intricate mutual interactions of these regulatory routes must orchestrate reproduction in this species at the highest potency.
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Affiliation(s)
- A. S. M. Kamruzzaman
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan;
| | - Azam Mikani
- Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran 14115-336, Iran;
| | - Amr A. Mohamed
- Department of Entomology, Faculty of Science, Cairo University, Giza 12613, Egypt;
- Correspondence: (A.A.M.); (M.T.); Tel.: +2-0106-943-1998 (A.A.M.); +81-78-982-2531/070-4425-68319 (M.T.)
| | - Azza M. Elgendy
- Department of Entomology, Faculty of Science, Cairo University, Giza 12613, Egypt;
| | - Makio Takeda
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan;
- Correspondence: (A.A.M.); (M.T.); Tel.: +2-0106-943-1998 (A.A.M.); +81-78-982-2531/070-4425-68319 (M.T.)
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