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Chen J, Liu YJ, Wang Q, Zhang L, Yang S, Feng WJ, Shi M, Gao J, Dai PL, Wu YY. Multiple stresses induced by chronic exposure to flupyradifurone affect honey bee physiological states. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 935:173418. [PMID: 38788938 DOI: 10.1016/j.scitotenv.2024.173418] [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: 02/19/2024] [Revised: 05/16/2024] [Accepted: 05/19/2024] [Indexed: 05/26/2024]
Abstract
Flupyradifurone (FPF) has been reported to have a potential risk to terrestrial and aquatic ecosystems. In the present study, the effects of chronic FPF exposure on bees were systematically investigated at the individual behavioral, tissue, cell, enzyme activity, and the gene expression levels. Chronic exposure (14 d) to FPF led to reduced survival (12 mg/L), body weight gain (4 and 12 mg/L), and food utilization efficiency (4 and 12 mg/L). Additionally, FPF exposure (12 mg/L) impaired sucrose sensitivity and memory of bees. Morphological analysis revealed significant cellular and subcellular changes in brain neurons and midgut epithelial cells, including mitochondrial damage, nuclear disintegration, and apoptosis. FPF exposure (4 and 12 mg/L) led to oxidative stress, as evidenced by increased lipid peroxidation and alterations in antioxidant enzyme activity. Notably, gene expression analysis indicated significant dysregulation of apoptosis, immune, detoxification, sucrose responsiveness and memory-related genes, suggesting the involvement of different pathways in FPF-induced toxicity. The multiple stresses and potential mechanisms described here provide a basis for determining the intrinsic toxicity of FPF.
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Affiliation(s)
- Jin Chen
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, China
| | - Yong-Jun Liu
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, China
| | - Qiang Wang
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, China
| | - Li Zhang
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, China
| | - Sa Yang
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, China
| | - Wang-Jiang Feng
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, China
| | - Min Shi
- Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai 201418, China
| | - Jing Gao
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, China.
| | - Ping-Li Dai
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, China.
| | - Yan-Yan Wu
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, China.
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2
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Shi J, Liu C, Zhang Y, Wu X. Early larval exposure to flumethrin induces long-term impacts on survival and memory behaviors of adult worker bees Apis mellifera. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2024; 201:105909. [PMID: 38685230 DOI: 10.1016/j.pestbp.2024.105909] [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: 01/02/2024] [Revised: 04/08/2024] [Accepted: 04/09/2024] [Indexed: 05/02/2024]
Abstract
Flumethrin has been supplied as an acaricide for Varroa mite control in world-wide apiculture due to its low lethal effects on honey bees. However, little is known about the effects of short-term flumethrin exposure in the larval stage on adult life stage of bees involving survival status, foraging and memory-related behaviors. Here, we found that exposure to flumethrin at 1 mg/L during larval stage reduced survival and altered foraging activities including induced precocious foraging activity, decreased foraging trips and time, and altered rotating day-off status of adult worker bees using the radio frequency identification system. Furthermore, larval exposure at 1 mg/L flumethrin influenced the correct proboscis extension responses of 7-day-old worker bees and decreased homing rates of 20-day-old worker bees, suggesting that 1 mg/L flumethrin exposure at larval stage could affect memory-related behaviors of adult bees; meanwhile, three genes related to memory (GluRA, Nmdar1 and Tyr1) were certainly down-regulated varying different flumethrin concentrations (0.01, 0.1, and 1 mg/L). Combined with transcriptomic sequencing, differentially expressed genes involved in olfactory memory of adult bees were completely down-regulated under flumethrin exposure. Our findings highlight the unprecedented impact of short-term exposure of insecticides on honey bees in long-term health monitoring under field conditions.
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Affiliation(s)
- Jingliang Shi
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang 330045, China; Jiangxi Province Key Laboratory of Honeybee Biology and Beekeeping, Nanchang 330045, China; College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, Tianjin 300350, China
| | - Chen Liu
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang 330045, China; Jiangxi Province Key Laboratory of Honeybee Biology and Beekeeping, Nanchang 330045, China
| | - Yonghong Zhang
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang 330045, China; Jiangxi Province Key Laboratory of Honeybee Biology and Beekeeping, Nanchang 330045, China
| | - Xiaobo Wu
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang 330045, China; Jiangxi Province Key Laboratory of Honeybee Biology and Beekeeping, Nanchang 330045, China.
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3
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Garrett EC, Bielawski AM, Ruchti E, Sherer LM, Waghmare I, Hess-Homeier D, McCabe BD, Stowers RS, Certel SJ. The matricellular protein Drosophila Cellular Communication Network Factor is required for synaptic transmission and female fertility. Genetics 2023; 223:iyac190. [PMID: 36602539 PMCID: PMC9991515 DOI: 10.1093/genetics/iyac190] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 11/16/2022] [Accepted: 11/17/2022] [Indexed: 01/06/2023] Open
Abstract
Within the extracellular matrix, matricellular proteins are dynamically expressed nonstructural proteins that interact with cell surface receptors, growth factors, and proteases, as well as with structural matrix proteins. The cellular communication network factors family of matricellular proteins serve regulatory roles to regulate cell function and are defined by their conserved multimodular organization. Here, we characterize the expression and neuronal requirement for the Drosophila cellular communication network factor family member. Drosophila cellular communication network factor is expressed in the nervous system throughout development including in subsets of monoamine-expressing neurons. Drosophila cellular communication network factor-expressing abdominal ganglion neurons innervate the ovaries and uterus and the loss of Drosophila cellular communication network factor results in reduced female fertility. In addition, Drosophila cellular communication network factor accumulates at the synaptic cleft and is required for neurotransmission at the larval neuromuscular junction. Analyzing the function of the single Drosophila cellular communication network factor family member will enhance our potential to understand how the microenvironment impacts neurotransmitter release in distinct cellular contexts and in response to activity.
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Affiliation(s)
| | - Ashley M Bielawski
- Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA
| | - Evelyne Ruchti
- Brain Mind Institute, Swiss Federal Institute of Technology (EPFL), 1015 Lausanne, Switzerland
| | - Lewis M Sherer
- Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA
| | - Indrayani Waghmare
- Department of Cell and Developmental Biology, Program in Developmental Biology, Vanderbilt-Ingram Center, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - David Hess-Homeier
- Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA
| | - Brian D McCabe
- Brain Mind Institute, Swiss Federal Institute of Technology (EPFL), 1015 Lausanne, Switzerland
| | - R Steven Stowers
- Department of Cell Biology and Microbiology, Montana State University, Bozeman, MT 59717, USA
| | - Sarah J Certel
- Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA
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4
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Huh E, Agosto MA, Wensel TG, Lichtarge O. Coevolutionary signals in metabotropic glutamate receptors capture residue contacts and long-range functional interactions. J Biol Chem 2023; 299:103030. [PMID: 36806686 PMCID: PMC10060750 DOI: 10.1016/j.jbc.2023.103030] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 02/09/2023] [Accepted: 02/10/2023] [Indexed: 02/18/2023] Open
Abstract
Upon ligand binding to a G protein-coupled receptor, extracellular signals are transmitted into a cell through sets of residue interactions that translate ligand binding into structural rearrangements. These interactions needed for functions impose evolutionary constraints so that, on occasion, mutations in one position may be compensated by other mutations at functionally coupled positions. To quantify the impact of amino acid substitutions in the context of major evolutionary divergence in the G protein-coupled receptor subfamily of metabotropic glutamate receptors (mGluRs), we combined two phylogenetic-based algorithms, Evolutionary Trace and covariation Evolutionary Trace, to infer potential structure-function couplings and roles in mGluRs. We found a subset of evolutionarily important residues at known functional sites and evidence of coupling among distinct structural clusters in mGluR. In addition, experimental mutagenesis and functional assays confirmed that some highly covariant residues are coupled, revealing their synergy. Collectively, these findings inform a critical step toward understanding the molecular and structural basis of amino acid variation patterns within mGluRs and provide insight for drug development, protein engineering, and analysis of naturally occurring variants.
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Affiliation(s)
- Eunna Huh
- Department of Pharmacology and Chemical Biology, Baylor College of Medicine, Houston, Texas, USA
| | - Melina A Agosto
- Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, Texas, USA; Retina and Optic Nerve Research Laboratory, Department of Physiology and Biophysics, Dalhousie University, Halifax, Canada
| | - Theodore G Wensel
- Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, Texas, USA
| | - Olivier Lichtarge
- Department of Pharmacology and Chemical Biology, Baylor College of Medicine, Houston, Texas, USA; Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA.
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Wu X, Li Z, Yang H, He X, Yan W, Zeng Z. The adverse impact on lifespan, immunity, and forage behavior of worker bees (Apis mellifera Linnaeus 1758) after exposure to flumethrin. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 858:160146. [PMID: 36375554 DOI: 10.1016/j.scitotenv.2022.160146] [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: 08/27/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 06/16/2023]
Abstract
Several pyrethroids (such as flumethrin and fluvalinate) with low toxicity to honey bees and comparable high toxicity to mites are used worldwide as acaricides. However, flumethrin has been used for a long time in colonies to control Varroa destructor and the honey bees might be exposed to flumethrin cumulatively, which could affect the health of honey bee colonies. This study evaluated the potential adverse effects of direct flumethrin exposure on worker bees under laboratory and colony conditions. Under laboratory conditions, downregulation of genes related to immune was observed when worker bees were exposed to flumethrin above 1/16 LD50; at levels above 1/8 LD50, olfactory learning was impaired, and genes related to learning memory were downregulated; and at >1/4 LD50, their lifespan was shortened. Monitoring with radio frequency identification (RFID) revealed that worker bees in a colony exposed to flumethrin above 1/8 LD50 had a shortened lifespan and reduced foraging ability. When worker bees are exposed to >1/4 LD50 of flumethrin, it can lead to excessive rest day behavior. These results indicate that applying flumethrin in colonies may pose a severe health risk to honey bees and reveal the urgent need to develop non-toxic and highly effective acaricides.
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Affiliation(s)
- Xiaobo Wu
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, PR China; Jiangxi Province Key Laboratory of Honeybee Biology and Beekeeping, Nanchang, Jiangxi 330045, PR China.
| | - Zhen Li
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, PR China; Jiangxi Province Key Laboratory of Honeybee Biology and Beekeeping, Nanchang, Jiangxi 330045, PR China
| | - Heyan Yang
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, PR China; Jiangxi Province Key Laboratory of Honeybee Biology and Beekeeping, Nanchang, Jiangxi 330045, PR China
| | - Xujiang He
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, PR China; Jiangxi Province Key Laboratory of Honeybee Biology and Beekeeping, Nanchang, Jiangxi 330045, PR China
| | - Weiyu Yan
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, PR China; Jiangxi Province Key Laboratory of Honeybee Biology and Beekeeping, Nanchang, Jiangxi 330045, PR China
| | - Zhijiang Zeng
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, PR China; Jiangxi Province Key Laboratory of Honeybee Biology and Beekeeping, Nanchang, Jiangxi 330045, PR China
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6
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Li Z, Yang H, Yu L, Liu C, Wu X. The negative effect of flumethrin stress on honey bee (Apis mellifera) worker from larvae to adults. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 188:105289. [PMID: 36464342 DOI: 10.1016/j.pestbp.2022.105289] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 11/06/2022] [Accepted: 11/09/2022] [Indexed: 06/17/2023]
Abstract
Flumethrin is a highly effective acaricide, but its lipophilic characteristic has some negative effects, such as accumulation in bee hives and bee products. However, studies on the survival stress of honey bees subsequent to chronic flumethrin exposure are limited. To answer this question, a study was carried out on the stress to honey bee (Apis mellifera) workers from larvae to adults by chronic exposure to sublethal concentrations of flumethrin. Three flumethrin treatment groups (1, 0.1, 0.01 mg/L) and one control group (with no added flumethrin) were established and divided the worker larvae into four groups. Then, starting with 2-day-old larvae, larvae and subsequent emerged worker bees of the four groups were orally fed with the corresponding concentrations of flumethrin until all the adult worker bees died, respectively. When the concentration was at 0.01 mg/L of flumethrin, the lifespan of adult worker bees decreased, and a down-regulation of detoxification-related genes (CYP450,GSTS) was induced in 1-day-old pupae. When it is at 0.1 mg/L flumethrin, the lifespan of adult worker bees was again shortened, and down-regulation of memory-related genes (GluRA1, Nmdar1, Tyr1) in 1-day-old pupae and gene Tyr1 in 1-day-old worker bees, detoxification-related genes (CYP450,GSTS) in 1-day-old pupae, and immunity genes (Defensin1, Hymenoptaecin) in 7-day-old worker bees were observed. When the concentration is at 1 mg/L flumethrin, lighter birth weight of newly emerged honeybee was found and deficiencies in olfactory learning and memory were observed in 7-day-old worker bees. Memory-related genes (GluRA1, Nmdar1, Tyr1) were down-regulated in 1-day-old pupae and genes (Nmdar1,Tyr1)in 1-day-old worker bees, as were detoxification-related genes (CYP450,GSTS) in 1-day-old pupae and gene CPY450 in 7-day-old worker bees, and immune genes (Defensin1, Hymenoptaecin) in 7-day-old worker bees. There was no significant difference in pupal weight, capping rate, emergence rate, expression of immune-related genes of 1-day-old pupae, expression of immune-related genes and detoxification-related genes of 1-day-old worker bees, expression of memory-related genes and detoxification-related gene GSTS of 7-day-old worker bees. These data provide an ominous warning about the unintended consequences on apiaries, and underscore the need for careful control of flumethrin residues in bee hives.
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Affiliation(s)
- Zhen Li
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, PR China; Jiangxi Province Key Laboratory of Honeybee Biology and Beekeeping, Nanchang, Jiangxi 330045, PR China
| | - Heyan Yang
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, PR China; Jiangxi Province Key Laboratory of Honeybee Biology and Beekeeping, Nanchang, Jiangxi 330045, PR China
| | - Longtao Yu
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, PR China; Jiangxi Province Key Laboratory of Honeybee Biology and Beekeeping, Nanchang, Jiangxi 330045, PR China
| | - Chen Liu
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, PR China; Jiangxi Province Key Laboratory of Honeybee Biology and Beekeeping, Nanchang, Jiangxi 330045, PR China
| | - Xiaobo Wu
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, PR China; Jiangxi Province Key Laboratory of Honeybee Biology and Beekeeping, Nanchang, Jiangxi 330045, PR China.
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7
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Salmela H, Harwood GP, Münch D, Elsik CG, Herrero-Galán E, Vartiainen MK, Amdam GV. Nuclear translocation of vitellogenin in the honey bee ( Apis mellifera). APIDOLOGIE 2022; 53:13. [PMID: 35309709 PMCID: PMC8924143 DOI: 10.1007/s13592-022-00914-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 11/10/2021] [Accepted: 12/18/2021] [Indexed: 05/27/2023]
Abstract
UNLABELLED Vitellogenin (Vg) is a conserved protein used by nearly all oviparous animals to produce eggs. It is also pleiotropic and performs functions in oxidative stress resistance, immunity, and, in honey bees, behavioral development of the worker caste. It has remained enigmatic how Vg affects multiple traits. Here, we asked whether Vg enters the nucleus and acts via DNA-binding. We used cell fractionation, immunohistology, and cell culture to show that a structural subunit of honey bee Vg translocates into cell nuclei. We then demonstrated Vg-DNA binding theoretically and empirically with prediction software and chromatin immunoprecipitation with sequencing (ChIP-seq), finding binding sites at genes influencing immunity and behavior. Finally, we investigated the immunological and enzymatic conditions affecting Vg cleavage and nuclear translocation and constructed a 3D structural model. Our data are the first to show Vg in the nucleus and suggest a new fundamental regulatory role for this ubiquitous protein. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s13592-022-00914-9.
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Affiliation(s)
- Heli Salmela
- Organismal and Evolutionary Biology Research Program, University of Helsinki, Viikinkaari 1, 00014 Helsinki, FI Finland
| | - Gyan P. Harwood
- Department of Entomology, University of Illinois at Urbana-Champaign, 320 Morrill Hall 505 South Goodwin Avenue, Urbana, IL 61801 USA
| | - Daniel Münch
- Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, N-1432 Aas, Norway
| | - Christine G. Elsik
- Division of Animal Sciences, University of Missouri, S108 Animal Sciences Research Center (ASRC), Colombia, MO 65211 USA
| | | | - Maria K. Vartiainen
- Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Viikinkaari 5, 00014 Helsinki, Finland
| | - Gro V. Amdam
- Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, N-1432 Aas, Norway
- School of Life Sciences, Arizona State University, 427 East Tyler Mall, Tempe, AZ 85281 USA
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8
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Sahu R, Upadhayay S, Mehan S. Inhibition of extracellular regulated kinase (ERK)-1/2 signaling pathway in the prevention of ALS: Target inhibitors and influences on neurological dysfunctions. Eur J Cell Biol 2021; 100:151179. [PMID: 34560374 DOI: 10.1016/j.ejcb.2021.151179] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 08/18/2021] [Accepted: 09/15/2021] [Indexed: 12/13/2022] Open
Abstract
Cell signal transduction pathways are essential modulators of several physiological and pathological processes in the brain. During overactivation, these signaling processes may lead to disease progression. Abnormal protein kinase activation is associated with several biological dysfunctions that facilitate neurodegeneration under different biological conditions. As a result, these signaling pathways are essential in understanding brain disorders' development or progression. Recent research findings indicate the crucial role of extracellular signal-regulated kinase-1/2 (ERK-1/2) signaling during the neuronal development process. ERK-1/2 is a key component of its mitogen-activated protein kinase (MAPK) group, controlling certain neurological activities by regulating metabolic pathways, cell proliferation, differentiation, and apoptosis. ERK-1/2 also influences neuronal elastic properties, nerve growth, and neurological and cognitive processing during brain injuries. The primary goal of this review is to elucidate the activation of ERK1/2 signaling, which is involved in the development of several ALS-related neuropathological dysfunctions. ALS is a rare neurological disorder category that mainly affects the nerve cells responsible for regulating voluntary muscle activity. ALS is progressive, which means that the symptoms are getting worse over time, and there is no cure for ALS and no effective treatment to avoid or reverse. Genetic abnormalities, oligodendrocyte degradation, glial overactivation, and immune deregulation are associated with ALS progression. Furthermore, the current review also identifies ERK-1/2 signaling inhibitors that can promote neuroprotection and neurotrophic effects against the clinical-pathological presentation of ALS. As a result, in the future, the potential ERK-1/2 signaling inhibitors could be used in the treatment of ALS and related neurocomplications.
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Affiliation(s)
- Rakesh Sahu
- Neuropharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, India
| | - Shubham Upadhayay
- Neuropharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, India
| | - Sidharth Mehan
- Neuropharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, India.
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9
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Watkins JC, Evans RH, Bayés À, Booker SA, Gibb A, Mabb AM, Mayer M, Mellor JR, Molnár E, Niu L, Ortega A, Pankratov Y, Ramos-Vicente D, Rodríguez-Campuzano A, Rodríguez-Moreno A, Wang LY, Wang YT, Wollmuth L, Wyllie DJA, Zhuo M, Frenguelli BG. 21st century excitatory amino acid research: A Q & A with Jeff Watkins and Dick Evans. Neuropharmacology 2021; 198:108743. [PMID: 34363811 DOI: 10.1016/j.neuropharm.2021.108743] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In 1981 Jeff Watkins and Dick Evans wrote what was to become a seminal review on excitatory amino acids (EAAs) and their receptors (Watkins and Evans, 1981). Bringing together various lines of evidence dating back over several decades on: the distribution in the nervous system of putative amino acid neurotransmitters; enzymes involved in their production and metabolism; the uptake and release of amino acids; binding of EAAs to membranes; the pharmacological action of endogenous excitatory amino acids and their synthetic analogues, and notably the actions of antagonists for the excitations caused by both nerve stimulation and exogenous agonists, often using pharmacological tools developed by Jeff and his colleagues, they provided a compelling account for EAAs, especially l-glutamate, as a bona fide neurotransmitter in the nervous system. The rest, as they say, is history, but far from being consigned to history, EAA research is in rude health well into the 21st Century as this series of Special Issues of Neuropharmacology exemplifies. With EAAs and their receptors flourishing across a wide range of disciplines and clinical conditions, we enter into a dialogue with two of the most prominent and influential figures in the early days of EAA research: Jeff Watkins and Dick Evans.
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Affiliation(s)
| | | | - Àlex Bayés
- Molecular Physiology of the Synapse Laboratory, Biomedical Research Institute Sant Pau, Barcelona, Spain and Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Sam A Booker
- Simons Initiative for the Developing Brain, Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh, EH8 9XD, UK
| | - Alasdair Gibb
- Research Department of Neuroscience, Physiology & Pharmacology, University College London, Gower Street, London, WC1E 6BT, UK
| | - Angela M Mabb
- Neuroscience Institute, Georgia State University, Atlanta, GA, United States
| | - Mark Mayer
- Bldg 35A, Room 3D-904, 35A Convent Drive, NINDS, NIH, Bethesda, MD, 20892, USA
| | - Jack R Mellor
- School of Physiology, Pharmacology and Neuroscience, University of Bristol, Biomedical Sciences Building, University Walk, Bristol, BS8 1TD, UK
| | - Elek Molnár
- School of Physiology, Pharmacology and Neuroscience, University of Bristol, Biomedical Sciences Building, University Walk, Bristol, BS8 1TD, UK
| | - Li Niu
- Chemistry Department, University at Albany, SUNY, 1400 Washington Ave, Albany, NY, 12222, USA
| | - Arturo Ortega
- Department of Toxicology, Cinvestav, Mexico City, Mexico
| | - Yuriy Pankratov
- School of Life Sciences, University of Warwick, Coventry, CV4 7AL, UK
| | - David Ramos-Vicente
- Molecular Physiology of the Synapse Laboratory, Biomedical Research Institute Sant Pau, Barcelona, Spain and Universitat Autònoma de Barcelona, Barcelona, Spain
| | | | | | - Lu-Yang Wang
- Program in Neurosciences & Mental Health, SickKids Research Institute and Department of Physiology, University of Toronto, 555 University Ave, Toronto, Ontario, M5G 1X8, Canada
| | - Yu Tian Wang
- Department of Medicine, University of British Columbia, Vancouver, BC, V6T 2B5, Canada
| | - Lonnie Wollmuth
- Depts. of Neurobiology & Behavior and Biochemistry & Cell Biology, Center for Nervous System Disorders, Stony Brook University, Stony Brook, NY, 11794-5230, USA
| | - David J A Wyllie
- Simons Initiative for the Developing Brain, Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh, EH8 9XD, UK
| | - Min Zhuo
- Institute of Brain Research, Qingdao International Academician Park, Qingdao, 266000, China
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10
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Shi J, Zhang R, Pei Y, Liao C, Wu X. Exposure to acetamiprid influences the development and survival ability of worker bees (Apis mellifera L.) from larvae to adults. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 266:115345. [PMID: 32814180 DOI: 10.1016/j.envpol.2020.115345] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 07/09/2020] [Accepted: 07/28/2020] [Indexed: 06/11/2023]
Abstract
In most cases, honey bees experience pesticide pollution in a long-term period through direct or indirect exposure, such as the development process from larvae to the pre-harvest stage. At present, little is known about how honey bees respond to pesticide stresses during the continuous development period. This study aims to examine effects of long-term acetamiprid exposure on the development and survival of honey bees, and further present the expression profile in larvae, 1-day-old, and 7-day-old adult worker bees that related to immune, detoxification, acetylcholinesterase (AChE) and memory. Honey bees from 2-day-old larvae to 14-day-old adults except the pupal stage were continuously fed with different acetamiprid solutions (0, 5, and 25 mg/L). We found that acetamiprid over 5 mg/L disturbed the development involving birth weight and emergence rate of newly emerged bees, and reduced the proportion of capped cells of larvae at 25 mg/L; gene expression related to immune and detoxification of worker bees exposed to acetamiprid was roughly activated, returned and then inhibited from larval to emerged and to the late adult stage, respectively. Moreover, lifespans of bees treated with acetamiprid at 25 mg/L were significantly reduced. The present study reflects the potential risk for honey bees continuously exposed to acetamiprid in the development stage.
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Affiliation(s)
- Jingliang Shi
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, 330045, PR China; College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, Tianjin, 300350, PR China
| | - Ruonan Zhang
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, 330045, PR China
| | - Yalin Pei
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, 330045, PR China
| | - Chunhua Liao
- Guangyuan City Animal Husbandry and Seed Management Station, Guangyuan, 628017, Sichuan, PR China
| | - Xiaobo Wu
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, 330045, PR China.
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Effect of Astragalus membranaceus Oral Solution on Lifespan and Learning and Memory Ability of Honey Bees. BIOMED RESEARCH INTERNATIONAL 2020; 2020:5745048. [PMID: 32351998 PMCID: PMC7174962 DOI: 10.1155/2020/5745048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 02/03/2020] [Accepted: 03/18/2020] [Indexed: 02/06/2023]
Abstract
In this study, the effects of Astragalus membranaceus oral solution on lifespan and learning and memory abilities of honey bees were evaluated. Two groups of bees were fed with sucrose syrup (50%) containing low dose (1.33%) and high dose (13.3%) of A. membranaceus oral solution, respectively. The proboscis extension response (PER) analysis was applied to examine the learning and memory capabilities of bees. Two genes related to memory formation in honey bees were determined by real-time PCR. High dose (13.3%) of A. membranaceus significantly decreased the mean lifespan of bees compared to the bees fed with low dose (1.33%) and control bees. No significant differences in lifespan of bees were found between low-dose-fed bees and control bees. The results of PER experiments showed apparent improvement in the memorizing ability of the high-dose group (in comparison with the control group). Moreover, the relative expression levels of Nmdar1 in the low-dose group and control group were significantly lower than those in the high-dose group. It is preliminarily concluded that A. membranaceus has an adverse effect on the mean lifespan of honey bees but might be helpful in strengthening memories.
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Prabhu SV, Singh SK. Identification of Potential Dual Negative Allosteric Modulators of Group I mGluR Family: A Shape Based Screening, ADME Prediction, Induced Fit Docking and Molecular Dynamics Approach Against Neurodegenerative Diseases. Curr Top Med Chem 2020; 19:2687-2707. [PMID: 31702505 DOI: 10.2174/1568026619666191105112800] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 09/02/2019] [Accepted: 10/01/2019] [Indexed: 01/17/2023]
Abstract
BACKGROUND Glutamate is the principal neurotransmitter in the human brain that exerts its effects through ionotropic glutamate receptors (iGluRs) and metabotropic glutamate receptors (mGluRs). The mGluRs are a class of C GPCRs that play a vital role in various neurobiological functions, mGluR1 and mGluR5 are the two receptors distributed throughout the brain involved in cognition, learning, memory, and other important neurological processes. Dysfunction of these receptors can cause neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, X-fragile syndrome, anxiety, depression, etc., hence these receptors are high profile targets for pharmaceutical industries. OBJECTIVE The objective of our study is to find the novel dual negative allosteric modulators to regulate both mGluR1 and mGluR5. METHODS In this study, shape screening protocol was used to find the dual negative allosteric modulators for both mGluR1 and mGluR5 followed by ADME prediction, induced-fit docking (IFD) and molecular dynamics simulations. Further, DFT analysis and MESP studies were carried out for the selected compounds. RESULTS Around 247 compounds were obtained from the eMolecules database and clustered through the CANVAS module and filtered with ADME properties. Furthermore, IFD revealed that the top four compounds (16059796, 25004252, 4667236 and 11670690) having good protein-ligand interactions and binding free energies. The molecular electrostatic potential of the top compounds shows interactions in the amine group and the oxygen atom in the negative potential regions. Finally, molecular dynamics simulations were performed with all the selected as well as the reported compound 29 indicates that the screened hits have better stability of protein ligand complex. CONCLUSION Hence, from the results, it is evident that top hits 16059796, 25004252, 4667236 and 11670690 could be a novel and potent dual negative allosteric modulators for mGluR1 and mGluR5.
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Affiliation(s)
- Sitrarasu Vijaya Prabhu
- Computer Aided Drug Designing and Molecular Modeling Laboratory, Department of Bioinformatics, Alagappa University, Karaikudi, Tamil Nadu-630 004, India
| | - Sanjeev Kumar Singh
- Computer Aided Drug Designing and Molecular Modeling Laboratory, Department of Bioinformatics, Alagappa University, Karaikudi, Tamil Nadu-630 004, India
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Zhang ZY, Li Z, Huang Q, Zhang XW, Ke L, Yan WY, Zhang LZ, Zeng ZJ. Deltamethrin Impairs Honeybees (Apis mellifera) Dancing Communication. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2020; 78:117-123. [PMID: 31642948 DOI: 10.1007/s00244-019-00680-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Accepted: 10/03/2019] [Indexed: 05/21/2023]
Abstract
As a commonly used pyrethroid insecticide, deltamethrin is very toxic to honeybees, which seriously threatens the managed and feral honeybee population. Because deltamethrin is a nerve agent, it may interfere with the nervous system of honeybees, such as dance behavior and memory-related characteristics. We found that the waggle dances were less precise in honeybees that consumed syrup containing deltamethrin (pesticide group) than those that consumed normal sucrose syrup (control group). Compared with the control group, honeybees of the pesticide group significantly increased number of circuits per 15 s, the divergence angle, return phases in waggle dances, as well as the crop content of the dance followers. Furthermore, six learning and memory-related genes were significantly interfered with the gene expression levels. Our data suggest that the sublethal dose of deltamethrin impaired the honeybees' learning and memory and resulted in cognitive disorder. The novel results assist in establishing guidelines for the risk assessment of pesticide to honeybee safety and prevention of nontarget biological agriculture pesticide poisoning.
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Affiliation(s)
- Zu Yun Zhang
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, 330045, China
- Sericultural and Apicultural Institute, Yunnan Academy of Agricultural Sciences, Mengzi, 661101, China
| | - Zhen Li
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Qiang Huang
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Xue Wen Zhang
- Sericultural and Apicultural Institute, Yunnan Academy of Agricultural Sciences, Mengzi, 661101, China
| | - Li Ke
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Wei Yu Yan
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Li Zhen Zhang
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Zhi Jiang Zeng
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, 330045, China.
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14
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Ramos-Vicente D, Ji J, Gratacòs-Batlle E, Gou G, Reig-Viader R, Luís J, Burguera D, Navas-Perez E, García-Fernández J, Fuentes-Prior P, Escriva H, Roher N, Soto D, Bayés À. Metazoan evolution of glutamate receptors reveals unreported phylogenetic groups and divergent lineage-specific events. eLife 2018; 7:e35774. [PMID: 30465522 PMCID: PMC6307864 DOI: 10.7554/elife.35774] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 11/20/2018] [Indexed: 01/28/2023] Open
Abstract
Glutamate receptors are divided in two unrelated families: ionotropic (iGluR), driving synaptic transmission, and metabotropic (mGluR), which modulate synaptic strength. The present classification of GluRs is based on vertebrate proteins and has remained unchanged for over two decades. Here we report an exhaustive phylogenetic study of GluRs in metazoans. Importantly, we demonstrate that GluRs have followed different evolutionary histories in separated animal lineages. Our analysis reveals that the present organization of iGluRs into six classes does not capture the full complexity of their evolution. Instead, we propose an organization into four subfamilies and ten classes, four of which have never been previously described. Furthermore, we report a sister class to mGluR classes I-III, class IV. We show that many unreported proteins are expressed in the nervous system, and that new Epsilon receptors form functional ligand-gated ion channels. We propose an updated classification of glutamate receptors that includes our findings.
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Affiliation(s)
- David Ramos-Vicente
- Molecular Physiology of the Synapse LaboratoryBiomedical Research Institute Sant PauBarcelonaSpain
- Universitat Autònoma de BarcelonaBarcelonaSpain
| | - Jie Ji
- Institute of Biotechnology and Biomedicine, Department of Cell Biology, Animal Physiology and ImmunologyUniversitat Autònoma de BarcelonaBarcelonaSpain
| | - Esther Gratacòs-Batlle
- Neurophysiology Laboratory, Department of Biomedicine, Medical School, August Pi i Sunyer Biomedical Research Institute, Institute of NeurosciencesUniversitat de BarcelonaBarcelonaSpain
| | - Gemma Gou
- Molecular Physiology of the Synapse LaboratoryBiomedical Research Institute Sant PauBarcelonaSpain
- Universitat Autònoma de BarcelonaBarcelonaSpain
| | - Rita Reig-Viader
- Molecular Physiology of the Synapse LaboratoryBiomedical Research Institute Sant PauBarcelonaSpain
- Universitat Autònoma de BarcelonaBarcelonaSpain
| | - Javier Luís
- Molecular Physiology of the Synapse LaboratoryBiomedical Research Institute Sant PauBarcelonaSpain
- Universitat Autònoma de BarcelonaBarcelonaSpain
| | - Demian Burguera
- Department of Genetics, School of Biology, Institut de BiomedicinaUniversity of BarcelonaBarcelonaSpain
| | - Enrique Navas-Perez
- Department of Genetics, School of Biology, Institut de BiomedicinaUniversity of BarcelonaBarcelonaSpain
| | - Jordi García-Fernández
- Department of Genetics, School of Biology, Institut de BiomedicinaUniversity of BarcelonaBarcelonaSpain
| | - Pablo Fuentes-Prior
- Molecular Bases of DiseaseBiomedical Research Institute Sant Pau, Hospital de la Santa Creu i Sant PauBarcelonaSpain
| | - Hector Escriva
- Sorbonne Université, CNRS, Biologie Intégrative des Organismes MarinsBanyuls-sur-MerFrance
| | - Nerea Roher
- Institute of Biotechnology and Biomedicine, Department of Cell Biology, Animal Physiology and ImmunologyUniversitat Autònoma de BarcelonaBarcelonaSpain
| | - David Soto
- Neurophysiology Laboratory, Department of Biomedicine, Medical School, August Pi i Sunyer Biomedical Research Institute, Institute of NeurosciencesUniversitat de BarcelonaBarcelonaSpain
| | - Àlex Bayés
- Molecular Physiology of the Synapse LaboratoryBiomedical Research Institute Sant PauBarcelonaSpain
- Universitat Autònoma de BarcelonaBarcelonaSpain
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Liao CH, He XJ, Wang ZL, Barron AB, Zhang B, Zeng ZJ, Wu XB. Short-Term Exposure to Lambda-Cyhalothrin Negatively Affects the Survival and Memory-Related Characteristics of Worker Bees Apis mellifera. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2018; 75:59-65. [PMID: 29423537 DOI: 10.1007/s00244-018-0514-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 01/30/2018] [Indexed: 06/08/2023]
Abstract
Pesticides are considered one of the major contemporary stressors of honey bee health. In this study, the effects of short-term exposure to lambda-cyhalothrin on lifespan, learning, and memory-related characteristics of Apis mellifera were systematically examined. Short-term exposure to lambda-cyhalothrin in worker bees reduced lifespan, affected learning and memory performance, reduced the homing ability, and influenced the expression levels of two learning and memory-related genes of A. mellifera. This research identifies the nature of the sublethal effects of lambda-cyhalothrin on bees and the level of exposure that can be harmful to bee health. This new information will assist in establishing guidelines for the safe use of lambda-cyhalothrin in the field.
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Affiliation(s)
- Chun-Hua Liao
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Xu-Jiang He
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Zi-Long Wang
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Andrew B Barron
- Department of Biological Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Bo Zhang
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Zhi-Jiang Zeng
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Xiao-Bo Wu
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, 330045, China.
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16
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Vijaya Prabhu S, Singh SK. Atom-based 3D-QSAR, induced fit docking, and molecular dynamics simulations study of thieno[2,3-b]pyridines negative allosteric modulators of mGluR5. J Recept Signal Transduct Res 2018; 38:225-239. [PMID: 29806525 DOI: 10.1080/10799893.2018.1476542] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Atom-based three dimensional-quantitative structure-activity relationship (3D-QSAR) model was developed on the basis of 5-point pharmacophore hypothesis (AARRR) with two hydrogen bond acceptors (A) and three aromatic rings for the derivatives of thieno[2,3-b]pyridine, which modulates the activity to inhibit the mGluR5 receptor. Generation of a highly predictive 3D-QSAR model was performed using the alignment of predicted pharmacophore hypothesis for the training set (R2 = 0.84, SD = 0.26, F = 45.8, N = 29) and test set (Q2 = 0.74, RMSE = 0.235, Pearson-R = 0.94, N = 9). The best pharmacophore hypothesis AARRR was selected, and developed three dimensional-quantitative structure activity relationship (3D-QSAR) model also supported the outcome of this study by means of favorable and unfavorable electron withdrawing group and hydrophobic regions of most active compound 42d and least active compound 18b. Following, induced fit docking and binding free energy calculations reveals the reliable binding orientation of the compounds. Finally, molecular dynamics simulations for 100 ns were performed to depict the protein-ligand stability. We anticipate that the resulted outcome could be supportive to discover potent negative allosteric modulators for metabotropic glutamate receptor 5 (mGluR5).
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Affiliation(s)
- Sitrarasu Vijaya Prabhu
- a Department of Bioinformatics, Computer Aided Drug Design and Molecular Modeling Lab , Alagappa University , Karaikudi , India
| | - Sanjeev Kumar Singh
- a Department of Bioinformatics, Computer Aided Drug Design and Molecular Modeling Lab , Alagappa University , Karaikudi , India
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17
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Kim K, Kim JH, Kim YH, Hong SE, Lee SH. Pathway profiles based on gene-set enrichment analysis in the honey bee Apis mellifera under brood rearing-suppressed conditions. Genomics 2017; 110:43-49. [PMID: 28803879 DOI: 10.1016/j.ygeno.2017.08.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 07/25/2017] [Accepted: 08/09/2017] [Indexed: 11/29/2022]
Abstract
Perturbation of normal behaviors in honey bee colonies by any external factor can immediately reduce the colony's capacity for brood rearing, which can eventually lead to colony collapse. To investigate the effects of brood-rearing suppression on the biology of honey bee workers, gene-set enrichment analysis of the transcriptomes of worker bees with or without suppressed brood rearing was performed. When brood rearing was suppressed, pathways associated with both protein degradation and synthesis were simultaneously over-represented in both nurses and foragers, and their overall pathway representation profiles resembled those of normal foragers and nurses, respectively. Thus, obstruction of normal labor induced over-representation in pathways related with reshaping of worker bee physiology, suggesting that transition of labor is physiologically reversible. In addition, some genes associated with the regulation of neuronal excitability, cellular and nutritional stress and aggressiveness were over-expressed under brood rearing suppression perhaps to manage in-hive stress under unfavorable conditions.
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Affiliation(s)
- Kyungmun Kim
- Department of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Republic of Korea
| | - Ju Hyeon Kim
- Department of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Republic of Korea
| | - Young Ho Kim
- Department of Applied Biology, College of Ecology & Environmental Science, Kyungpook National University, Sangju, Gyeongbuk, Republic of Korea
| | - Seong-Eui Hong
- Theragen Etex, Bio Institute, Suwon, Gyeonggi-do, Republic of Korea
| | - Si Hyeock Lee
- Department of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Republic of Korea; Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea.
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18
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Differential protein expression analysis following olfactory learning in Apis cerana. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2015; 201:1053-61. [DOI: 10.1007/s00359-015-1042-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2015] [Revised: 09/18/2015] [Accepted: 09/21/2015] [Indexed: 11/26/2022]
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Dillon J, Franks CJ, Murray C, Edwards RJ, Calahorro F, Ishihara T, Katsura I, Holden-Dye L, O'Connor V. Metabotropic Glutamate Receptors: MODULATORS OF CONTEXT-DEPENDENT FEEDING BEHAVIOUR IN C. ELEGANS. J Biol Chem 2015; 290:15052-65. [PMID: 25869139 DOI: 10.1074/jbc.m114.606608] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Indexed: 11/06/2022] Open
Abstract
Glutamatergic neurotransmission is evolutionarily conserved across animal phyla. A major class of glutamate receptors consists of the metabotropic glutamate receptors (mGluRs). In C. elegans, three mGluR genes, mgl-1, mgl-2, and mgl-3, are organized into three subgroups, similar to their mammalian counterparts. Cellular reporters identified expression of the mgls in the nervous system of C. elegans and overlapping expression in the pharyngeal microcircuit that controls pharyngeal muscle activity and feeding behavior. The overlapping expression of mgls within this circuit allowed the investigation of receptor signaling per se and in the context of receptor interactions within a neural network that regulates feeding. We utilized the pharmacological manipulation of neuronally regulated pumping of the pharyngeal muscle in the wild-type and mutants to investigate MGL function. This defined a net mgl-1-dependent inhibition of pharyngeal pumping that is modulated by mgl-3 excitation. Optogenetic activation of the pharyngeal glutamatergic inputs combined with electrophysiological recordings from the isolated pharyngeal preparations provided further evidence for a presynaptic mgl-1-dependent regulation of pharyngeal activity. Analysis of mgl-1, mgl-2, and mgl-3 mutant feeding behavior in the intact organism after acute food removal identified a significant role for mgl-1 in the regulation of an adaptive feeding response. Our data describe the molecular and cellular organization of mgl-1, mgl-2, and mgl-3. Pharmacological analysis identified that, in these paradigms, mgl-1 and mgl-3, but not mgl-2, can modulate the pharyngeal microcircuit. Behavioral analysis identified mgl-1 as a significant determinant of the glutamate-dependent modulation of feeding, further highlighting the significance of mGluRs in complex C. elegans behavior.
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Affiliation(s)
- James Dillon
- From the Centre for Biological Sciences, University of Southampton, University Road, Southampton, SO17 1BJ, United Kingdom,
| | - Christopher J Franks
- From the Centre for Biological Sciences, University of Southampton, University Road, Southampton, SO17 1BJ, United Kingdom
| | | | - Richard J Edwards
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Kensington, New South Wales 2052, Australia
| | - Fernando Calahorro
- From the Centre for Biological Sciences, University of Southampton, University Road, Southampton, SO17 1BJ, United Kingdom
| | - Takeshi Ishihara
- the Department of Biology, Graduate School of Science, Kyushu University, 6-10-1, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, and
| | - Isao Katsura
- the National Institute of Genetics, Yata 1111, Mishima, Shizuoka-ken, 411-8540, Japan
| | - Lindy Holden-Dye
- From the Centre for Biological Sciences, University of Southampton, University Road, Southampton, SO17 1BJ, United Kingdom
| | - Vincent O'Connor
- From the Centre for Biological Sciences, University of Southampton, University Road, Southampton, SO17 1BJ, United Kingdom,
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20
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Qin QH, Wang ZL, Tian LQ, Gan HY, Zhang SW, Zeng ZJ. The integrative analysis of microRNA and mRNA expression in Apis mellifera following maze-based visual pattern learning. INSECT SCIENCE 2014; 21:619-636. [PMID: 24136738 DOI: 10.1111/1744-7917.12065] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/24/2013] [Indexed: 06/02/2023]
Abstract
The honeybee (Apis mellifera) is a social insect with strong sensory capacity and diverse behavioral repertoire and is recognized as a good model organism for studying the neurobiological basis of learning and memory. In this study, we analyzed the changes in microRNA (miRNA) and messenger RNA (mRNA) following maze-based visual learning using next-generation small RNA sequencing and Solexa/lllumina Digital Gene Expression tag profiling (DGE). For small RNA sequencing, we obtained 13 367 770 and 13 132 655 clean tags from the maze and control groups, respectively. A total of 40 differentially expressed known miRNAs were detected between these two samples, and all of them were up-regulated in the maze group compared to the control group. For DGE, 5 681 320 and 5 939 855 clean tags were detected from the maze and control groups, respectively. There were a total of 388 differentially expressed genes between these two samples, with 45 genes up-regulated and 343 genes down-regulated in the maze group, compared to the control group. Additionally, the expression levels of 10 differentially expressed genes were confirmed by quantitative reverse transcription polymerase chain reaction (qRT-PCR) and the expression trends of eight of them were consistent with the DGE result, although the degree of change was lower in amplitude. The integrative analysis of miRNA and mRNA expression showed that, among the 40 differentially expressed known miRNAs and 388 differentially expressed genes, 60 pairs of miRNA/mRNA were identified as co-expressed in our present study. These results suggest that both miRNA and mRNA may play a pivotal role in the process of learning and memory in honeybees. Our sequencing data provide comprehensive miRNA and gene expression information for maze-based visual learning, which will facilitate understanding of the molecular mechanisms of honeybee learning and memory.
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Affiliation(s)
- Qiu-Hong Qin
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, China
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21
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Contrasting Effects of Histone Deacetylase Inhibitors on Reward and Aversive Olfactory Memories in the Honey Bee. INSECTS 2014; 5:377-98. [PMID: 26462690 PMCID: PMC4592598 DOI: 10.3390/insects5020377] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 04/12/2014] [Accepted: 05/19/2014] [Indexed: 11/17/2022]
Abstract
Much of what we have learnt from rodent models about the essential role of epigenetic processes in brain plasticity has made use of aversive learning, yet the role of histone acetylation in aversive memory in the honey bee, a popular invertebrate model for both memory and epigenetics, was previously unknown. We examined the effects of histone deacetylase (HDAC) inhibition on both aversive and reward olfactory associative learning in a discrimination proboscis extension reflex (PER) assay. We report that treatment with the HDAC inhibitors APHA compound 8 (C8), phenylbutyrate (PB) or sodium butyrate (NaB) impaired discrimination memory due to impairment of aversive memory in a dose-dependent manner, while simultaneously having no effect on reward memory. Treatment with C8 1 h before training, 1 h after training or 1 h before testing, impaired aversive but not reward memory at test. C8 treatment 1 h before training also improved aversive but not reward learning during training. PB treatment only impaired aversive memory at test when administered 1 h after training, suggesting an effect on memory consolidation specifically. Specific impairment of aversive memory (but not reward memory) by HDAC inhibiting compounds was robust, reproducible, occurred following treatment with three drugs targeting the same mechanism, and is likely to be genuinely due to alterations to memory as sucrose sensitivity and locomotion were unaffected by HDAC inhibitor treatment. This pharmacological dissection of memory highlights the involvement of histone acetylation in aversive memory in the honey bee, and expands our knowledge of epigenetic control of neural plasticity in invertebrates.
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McDonnell CM, Alaux C, Parrinello H, Desvignes JP, Crauser D, Durbesson E, Beslay D, Le Conte Y. Ecto- and endoparasite induce similar chemical and brain neurogenomic responses in the honey bee (Apis mellifera). BMC Ecol 2013; 13:25. [PMID: 23866001 PMCID: PMC3725162 DOI: 10.1186/1472-6785-13-25] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Accepted: 06/19/2013] [Indexed: 12/18/2022] Open
Abstract
Background Exclusion from a social group is an effective way to avoid parasite transmission. This type of social removal has also been proposed as a form of collective defense, or social immunity, in eusocial insect groups. If parasitic modification of host behavior is widespread in social insects, the underlying physiological and neuronal mechanisms remain to be investigated. We studied this phenomenon in honey bees parasitized by the mite Varroa destructor or microsporidia Nosema ceranae, which make bees leave the hive precociously. We characterized the chemical, behavioral and neurogenomic changes in parasitized bees, and compared the effects of both parasites. Results Analysis of cuticular hydrocarbon (CHC) profiles by gas chromatography coupled with mass spectrophotometry (GC-MS) showed changes in honey bees parasitized by either Nosema ceranae or Varroa destructor after 5 days of infestation. Levels of 10-HDA, an antiseptic important for social immunity, did not change in response to parasitism. Behavioral analysis of N. ceranae- or V. destructor- parasitized bees revealed no significant differences in their behavioral acts or social interactions with nestmates. Digital gene expression (DGE) analysis of parasitized honey bee brains demonstrated that, despite the difference in developmental stage at which the bee is parasitized, Nosema and Varroa-infested bees shared more gene changes with each other than with honey bee brain expression gene sets for forager or nurse castes. Conclusions Parasitism by Nosema or Varroa induces changes to both the CHC profiles on the surface of the bee and transcriptomic profiles in the brain, but within the social context of the hive, does not result in observable effects on her behavior or behavior towards her. While parasitized bees are reported to leave the hive as foragers, their brain transcription profiles suggest that their behavior is not driven by the same molecular pathways that induce foraging behavior.
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23
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Wang ZL, Wang H, Qin QH, Zeng ZJ. Gene expression analysis following olfactory learning in Apis mellifera. Mol Biol Rep 2012; 40:1631-9. [PMID: 23073783 DOI: 10.1007/s11033-012-2212-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Accepted: 10/09/2012] [Indexed: 11/29/2022]
Abstract
The honeybee has a strong learning and memory ability, and is recognized as the best model organism for studying the neurobiological basis of learning and memory. In this study, we analyzed the gene expression difference following proboscis extension response-based olfactory learning in the A. mellifera using a tag-based digital gene expression (DGE) method. We obtained about 5.71 and 5.65 million clean tags from the trained group and untrained group, respectively. A total of 259 differentially expressed genes were detected between these two samples, with 30 genes up-regulated and 229 genes down-regulated in trained group compared to the untrained group. These results suggest that bees tend to actively suppress some genes instead of activating previously silent genes after olfactory learning. Our DGE data provide comprehensive gene expression information for olfactory learning, which will facilitate our understanding of the molecular mechanism of honey bee learning and memory.
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Affiliation(s)
- Zi-Long Wang
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi, China
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24
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Shi YY, Wu XB, Huang ZY, Wang ZL, Yan WY, Zeng ZJ. Epigenetic modification of gene expression in honey bees by heterospecific gland secretions. PLoS One 2012; 7:e43727. [PMID: 22928024 PMCID: PMC3424160 DOI: 10.1371/journal.pone.0043727] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Accepted: 07/23/2012] [Indexed: 01/21/2023] Open
Abstract
Background In the honey bee (Apis mellifera), queen and workers have different behavior and reproductive capacity despite possessing the same genome. The primary substance that leads to this differentiation is royal jelly (RJ), which contains a range of proteins, amino acids, vitamins and nucleic acids. MicroRNA (miRNA) has been found to play an important role in regulating the expression of protein-coding genes and cell biology. In this study, we characterized the miRNAs in RJ from two honey bee sister species and determined their possible effect on transcriptome in one species. Methodology/Principal Findings We sequenced the miRNAs in RJ either from A. mellifera (RJM) or A. cerana (RJC). We then determined the global transcriptomes of adult A. mellifera developed from larvae fed either with RJM (mRJM) or RJC (mRJC). Finally we analyzed the target genes of those miRNA that are species specific or differentially expressed in the two honey bee species. We show that there were differences in miRNA between RJM and RJC, and that transcriptomes of adult A. mellifera were affected by the two types of RJ. A high proportion (23.3%) of the affected genes were target genes of differential miRNAs. Conclusion We show for the first time that there are differences in miRNAs in RJ between A. mellifera and A. cerana. Further, the differences in transcriptomes of bees reared from these two RJs might be related to miRNA differences of the two species. This study provides the first evidence that heterospecific royal jelly can modify gene expression in honey bees through an epigenetic mechanism.
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Affiliation(s)
- Yuan Yuan Shi
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Xiao Bo Wu
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Zachary Y. Huang
- Department of Entomology, Michigan State University, East Lansing, Michigan, United States of America
- Ecology, Evolutionary Biology and Behavior Program, Michigan State University, East Lansing, Michigan, United States of America
| | - Zi Long Wang
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Wei Yu Yan
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Zhi Jiang Zeng
- Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, Jiangxi, China
- * E-mail:
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El Hassani AK, Schuster S, Dyck Y, Demares F, Leboulle G, Armengaud C. Identification, localization and function of glutamate-gated chloride channel receptors in the honeybee brain. Eur J Neurosci 2012; 36:2409-20. [PMID: 22632568 DOI: 10.1111/j.1460-9568.2012.08144.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Glutamate-gated chloride channels (GluCls) are members of the cys-loop ligand-gated ion channel superfamily whose presence has been reported in a variety of invertebrate tissues. In the honeybee, a single gene, amel_glucl, encoding a GluClα subunit, was found in the genome but both the pattern of expression of this gene in the bee brain and its functional role remained unknown. Here we localised the expression sites of the honeybee GluClα subunit at the mRNA and protein levels. To characterise the functional role of GluCls in the honeybee brain, we studied their implication in olfactory learning and memory by means of RNA interference (RNAi) against the GluClα subunit. We found that the GluClα subunit is expressed in the muscles, the antennae and the brain of honeybees. Expression of the GluClα protein was necessary for the retrieval of olfactory memories; more specifically, injection of dsRNA or siRNA resulted in a decrease in retention performances ∼24 h after injection. Knockdown of GluClα subunits impaired neither olfaction nor sucrose sensitivity, and did not affect the capacity to associate odor and sucrose. Our data provide the first evidence for the involvement of glutamate-gated chloride channels in olfactory memory in an invertebrate.
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Lopatina NG, Zachepilo TG, Chesnokova EG. Again about central metabotropic glutamate receptors of the group I in the honeybee Apis mellifera. J EVOL BIOCHEM PHYS+ 2012. [DOI: 10.1134/s0022093011060123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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27
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Acute disruption of the NMDA receptor subunit NR1 in the honeybee brain selectively impairs memory formation. J Neurosci 2010; 30:7817-25. [PMID: 20534830 DOI: 10.1523/jneurosci.5543-09.2010] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Memory formation is a continuous process composed of multiple phases that can develop independently from each other. These phases depend on signaling pathways initiated after the activation of receptors in different brain regions. The NMDA receptor acts as a sensor of coincident activity between neural inputs, and, as such, its activation during learning is thought to be crucial for various forms of memory. In this study, we inhibited the expression of the NR1 subunit of the NMDA receptor in the honeybee brain using RNA interference. We show that the disruption of the subunit expression in the mushroom body region of the honeybee brain during and shortly after appetitive learning selectively impaired memory. Although the formation of mid-term memory and early long-term memory was impaired, late long-term memory was left intact. This indicates that late long-term memory formation differs in its dependence on NMDA receptor activity from earlier memory phases.
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Ryzhova IV, Zachepilo TG, Chesnokova EG, Lopatina NG. Metabotropic glutamate receptors in mechanisms of plasticity of the central nervous system in the honeybee Apis mellifera. J EVOL BIOCHEM PHYS+ 2010. [DOI: 10.1134/s002209301003004x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Biswas S, Reinhard J, Oakeshott J, Russell R, Srinivasan MV, Claudianos C. Sensory regulation of neuroligins and neurexin I in the honeybee brain. PLoS One 2010; 5:e9133. [PMID: 20161754 PMCID: PMC2817746 DOI: 10.1371/journal.pone.0009133] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2009] [Accepted: 01/23/2010] [Indexed: 01/15/2023] Open
Abstract
Background Neurexins and neuroligins, which have recently been associated with neurological disorders such as autism in humans, are highly conserved adhesive proteins found on synaptic membranes of neurons. These binding partners produce a trans-synaptic bridge that facilitates maturation and specification of synapses. It is believed that there exists an optimal spatio-temporal code of neurexin and neuroligin interactions that guide synapse formation in the postnatal developing brain. Therefore, we investigated whether neuroligins and neurexin are differentially regulated by sensory input using a behavioural model system with an advanced capacity for sensory processing, learning and memory, the honeybee. Methodology/Principal Findings Whole brain expression levels of neuroligin 1–5 (NLG1–5) and neurexin I (NrxI) were estimated by qRT-PCR analysis in three different behavioural paradigms: sensory deprivation, associative scent learning, and lateralised sensory input. Sensory deprived bees had a lower level of NLG1 expression, but a generally increased level of NLG2–5 and NrxI expression compared to hive bees. Bees that had undergone associative scent training had significantly increased levels of NrxI, NLG1 and NLG3 expression compared to untrained control bees. Bees that had lateralised sensory input after antennal amputation showed a specific increase in NLG1 expression compared to control bees, which only happened over time. Conclusions/Significance Our results suggest that (1) there is a lack of synaptic pruning during sensory deprivation; (2) NLG1 expression increases with sensory stimulation; (3) concomitant changes in gene expression suggests NrxI interacts with all neuroligins; (4) there is evidence for synaptic compensation after lateralised injury.
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Affiliation(s)
- Sunita Biswas
- Queensland Brain Institute, The University of Queensland, St. Lucia, Queensland, Australia
- Research School of Biological Sciences, Australian National University, Canberra, Australian Capital Territory, Australia
- Commonwealth Scientific and Industrial Research Organisation Entomology, Canberra, Australian Capital Territory, Australia
| | - Judith Reinhard
- Queensland Brain Institute, The University of Queensland, St. Lucia, Queensland, Australia
| | - John Oakeshott
- Commonwealth Scientific and Industrial Research Organisation Entomology, Canberra, Australian Capital Territory, Australia
| | - Robyn Russell
- Commonwealth Scientific and Industrial Research Organisation Entomology, Canberra, Australian Capital Territory, Australia
| | - Mandyam V. Srinivasan
- Queensland Brain Institute, The University of Queensland, St. Lucia, Queensland, Australia
- Australian Research Council Centre of Excellence in Vision Science, Australian National University, Canberra, Australian Capital Territory, Australia
- School of Information Technology and Electrical Engineering, The University of Queensland, St. Lucia, Queensland, Australia
| | - Charles Claudianos
- Queensland Brain Institute, The University of Queensland, St. Lucia, Queensland, Australia
- Commonwealth Scientific and Industrial Research Organisation Entomology, Canberra, Australian Capital Territory, Australia
- * E-mail:
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Ahier A, Rondard P, Gouignard N, Khayath N, Huang S, Trolet J, Donoghue DJ, Gauthier M, Pin JP, Dissous C. A new family of receptor tyrosine kinases with a venus flytrap binding domain in insects and other invertebrates activated by aminoacids. PLoS One 2009; 4:e5651. [PMID: 19461966 PMCID: PMC2680970 DOI: 10.1371/journal.pone.0005651] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2009] [Accepted: 04/20/2009] [Indexed: 11/30/2022] Open
Abstract
Background Tyrosine kinase receptors (RTKs) comprise a large family of membrane receptors that regulate various cellular processes in cell biology of diverse organisms. We previously described an atypical RTK in the platyhelminth parasite Schistosoma mansoni, composed of an extracellular Venus flytrap module (VFT) linked through a single transmembrane domain to an intracellular tyrosine kinase domain similar to that of the insulin receptor. Methods and Findings Here we show that this receptor is a member of a new family of RTKs found in invertebrates, and particularly in insects. Sixteen new members of this family, named Venus Kinase Receptor (VKR), were identified in many insects. Structural and phylogenetic studies performed on VFT and TK domains showed that VKR sequences formed monophyletic groups, the VFT group being close to that of GABAB receptors and the TK one being close to that of insulin receptors. We show that a recombinant VKR is able to autophosphorylate on tyrosine residues, and report that it can be activated by L-arginine. This is in agreement with the high degree of conservation of the alpha amino acid binding residues found in many amino acid binding VFTs. The presence of high levels of vkr transcripts in larval forms and in female gonads indicates a putative function of VKR in reproduction and/or development. Conclusion The identification of RTKs specific for parasites and insect vectors raises new perspectives for the control of human parasitic and infectious diseases.
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Affiliation(s)
- Arnaud Ahier
- Inserm U547, Université de Lille 2, Institut Pasteur de Lille, Lille, France
| | - Philippe Rondard
- CNRS UMR5203, Institut de Génomique Fonctionnelle, Inserm U661, and Université Montpellier 1,2, Montpellier, France
| | - Nadège Gouignard
- Inserm U547, Université de Lille 2, Institut Pasteur de Lille, Lille, France
| | - Naji Khayath
- Inserm U547, Université de Lille 2, Institut Pasteur de Lille, Lille, France
| | - Siluo Huang
- CNRS UMR5203, Institut de Génomique Fonctionnelle, Inserm U661, and Université Montpellier 1,2, Montpellier, France
| | - Jacques Trolet
- Inserm U547, Université de Lille 2, Institut Pasteur de Lille, Lille, France
| | - Daniel J. Donoghue
- Department of Chemistry and Biochemistry and Moores UCSD Cancer Center, University of California San Diego, La Jolla, California, United States of America
| | - Monique Gauthier
- Centre de Recherches sur la Cognition Animale, CNRS UMR 5169, Université Paul Sabatier, Toulouse, France
| | - Jean-Philippe Pin
- CNRS UMR5203, Institut de Génomique Fonctionnelle, Inserm U661, and Université Montpellier 1,2, Montpellier, France
| | - Colette Dissous
- Inserm U547, Université de Lille 2, Institut Pasteur de Lille, Lille, France
- * E-mail:
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El Hassani AK, Giurfa M, Gauthier M, Armengaud C. Inhibitory neurotransmission and olfactory memory in honeybees. Neurobiol Learn Mem 2008; 90:589-95. [PMID: 18755283 DOI: 10.1016/j.nlm.2008.07.018] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2008] [Revised: 06/20/2008] [Accepted: 07/22/2008] [Indexed: 11/25/2022]
Abstract
In insects, gamma-aminobutyric acid (GABA) and glutamate mediate fast inhibitory neurotransmission through ligand-gated chloride channel receptors. Both GABA and glutamate have been identified in the olfactory circuit of the honeybee. Here we investigated the role of inhibitory transmission mediated by GABA and glutamate-gated chloride channels (GluCls) in olfactory learning and memory in honeybees. We combined olfactory conditioning with injection of ivermectin, an agonist of GluCl receptors. We also injected a blocker of glutamate transporters (L-trans-PDC) or a GABA analog (TACA). We measured acquisition and retention 1, 24 and 48 h after the last acquisition trial. A low dose of ivermectin (0.01 ng/bee) impaired long-term olfactory memory (48 h) while a higher dose (0.05 ng/bee) had no effect. Double injections of ivermectin and L-trans-PDC or TACA had different effects on memory retention, depending on the doses and agents combined. When the low dose of ivermectin was injected after Ringer, long-term memory was again impaired (48 h). Such an effect was rescued by injection of both TACA and L-trans-PDC. A combination of the higher dose of ivermectin and TACA decreased retention at 48 h. We interpret these results as reflecting the involvement of both GluCl and GABA receptors in the impairment of olfactory long-term memory induced by ivermectin. These results illustrate the diversity of inhibitory transmission and its implication in long-term olfactory memory in honeybees.
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Affiliation(s)
- Abdessalam Kacimi El Hassani
- Centre de Recherches sur la Cognition Animale, Université Paul Sabatier Toulouse III, CNRS UMR 5169, 118 Route de Narbonne, 31062 TOULOUSE Cedex 4, France
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Abstract
Glutamate is the predominant excitatory neurotransmitter in the vertebrate brain, whereas acetylcholine has been considered to play the same role in insects. Recent studies have, however, questioned the latter view by showing a rather general distribution of glutamate transporters. Here, we describe the expression pattern of the receptor DmGlu-A (DmGluRA), the unique homolog of vertebrate metabotropic glutamate receptors. Metabotropic glutamate receptors play important roles in the regulation of glutamatergic neurotransmission. Using a specific antibody, we report DmGluRA expression in most neuropile areas in both larvae and adults, but not in the lobes of the mushroom bodies. These observations suggest a key role for glutamate in the insect brain.
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