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Hancock PA, Ochomo E, Messenger LA. Genetic surveillance of insecticide resistance in African Anopheles populations to inform malaria vector control. Trends Parasitol 2024; 40:604-618. [PMID: 38760258 DOI: 10.1016/j.pt.2024.04.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 04/24/2024] [Accepted: 04/26/2024] [Indexed: 05/19/2024]
Abstract
Insecticide resistance in malaria vector populations poses a major threat to malaria control, which relies largely on insecticidal interventions. Contemporary vector-control strategies focus on combatting resistance using multiple insecticides with differing modes of action within the mosquito. However, diverse genetic resistance mechanisms are present in vector populations, and continue to evolve. Knowledge of the spatial distribution of these genetic mechanisms, and how they impact the efficacy of different insecticidal products, is critical to inform intervention deployment decisions. We developed a catalogue of genetic-resistance mechanisms in African malaria vectors that could guide molecular surveillance. We highlight situations where intervention deployment has led to resistance evolution and spread, and identify challenges in understanding and mitigating the epidemiological impacts of resistance.
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Affiliation(s)
- Penelope A Hancock
- Department of Infectious Disease Epidemiology, Imperial College London, London, UK.
| | - Eric Ochomo
- Centre for Global Health Research, Kenya Medical Research Institute, Kisumu, Kenya; Vector Group, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool, UK
| | - Louisa A Messenger
- Department of Environmental and Occupational Health, School of Public Health, University of Nevada, Las Vegas, USA; Parasitology and Vector Biology (PARAVEC) Laboratory, School of Public Health, University of Nevada, Las Vegas, USA
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2
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In vitro and in silico analysis of the Anopheles anticholinesterase activity of terpenoids. Parasitol Int 2023; 93:102713. [PMID: 36455706 DOI: 10.1016/j.parint.2022.102713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 11/22/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022]
Abstract
Anopheles gambiae, An. coluzzii, An. arabiensis, and An. funestus are major vectors in high malaria endemic African regions. Various terpenoid classes form the main chemical constituent repository of essential oils, many of which have been shown to possess insecticidal effects against Anopheles species. The current study aimed to assess the bioactivity of terpenoids including four sesquiterpene alcohols, farnesol, (-)-α-bisabolol, cis-nerolidol, and trans-nerolidol; a phenylpropanoid, methyleugenol, and a monoterpene, (R)-(+)-limonene, using the larvicidal screening assay against the four Anopheles species. The mechanism of action was investigated through in vitro acetylcholinesterase inhibition assay and in silico molecular modelling. All six terpenoids showed potent larvicidal activity against the four Anopheles species. Insights into the mechanism of action revealed that the six terpenoids are strong AChE inhibitors against An. funestus and An. arabiensis, while there was a moderate inhibitory activity against An. gambiae AChE, but very weak activity against An. coluzzii. Interestingly, in the in silico study, farnesol established a favourable hydrogen bonding interaction with a conserved amino acid residue, Cys447, at the entrance to the active site gorge. While (-)-α-bisabolol and methyleugenol displayed a strong interaction with the catalytic Ser360 and adjacent amino acid residues; but sparing the mutable Gly280 residue that confers resistance to the current anticholinesterase insecticides. As a result, this study identified farnesol, (-)-α-bisabolol, and methyleugenol as selective bioinsecticidal agents with potent Anopheles AChE inhibition. These terpenoids present as natural compounds for further development as anticholinesterase bioinsecticides.
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3
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Rants’o TA, van Greunen DG, van der Westhuizen CJ, Riley DL, Panayides JL, Koekemoer LL, van Zyl RL. The in silico and in vitro analysis of donepezil derivatives for Anopheles acetylcholinesterase inhibition. PLoS One 2022; 17:e0277363. [PMID: 36350894 PMCID: PMC9645637 DOI: 10.1371/journal.pone.0277363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Accepted: 10/25/2022] [Indexed: 11/11/2022] Open
Abstract
Current studies on Anopheles anticholinesterase insecticides are focusing on identifying agents with high selectivity towards Anopheles over mammalian targets. Acetylcholinesterase (AChE) from electric eel is often used as the bioequivalent enzyme to study ligands designed for activity and inhibition in human. In this study, previously identified derivatives of a potent AChE, donepezil, that have exhibited low activity on electric eel AChE were assessed for potential AChE-based larvicidal effects on four African malaria vectors; An. funestus, An. arabiensis, An. gambiae and An. coluzzii. This led to the identification of four larvicidal agents with a lead molecule, 1-benzyl-N-(thiazol-2-yl) piperidine-4-carboxamide 2 showing selectivity for An. arabiensis as a larvicidal AChE agent. Differential activities of this molecule on An. arabiensis and electric eel AChE targets were studied through molecular modelling. Homology modelling was used to generate a three-dimensional structure of the An. arabiensis AChE for this binding assay. The conformation of this molecule and corresponding interactions with the AChE catalytic site was markedly different between the two targets. Assessment of the differences between the AChE binding sites from electric eel, human and Anopheles revealed that the electric eel and human AChE proteins were very similar. In contrast, Anopheles AChE had a smaller cysteine residue in place of bulky phenylalanine group at the entrance to the catalytic site, and a smaller aspartic acid residue at the base of the active site gorge, in place of the bulky tyrosine residues. Results from this study suggest that this difference affects the ligand orientation and corresponding interactions at the catalytic site. The lead molecule 2 also formed more favourable interactions with An. arabiensis AChE model than other Anopheles AChE targets, possibly explaining the observed selectivity among other assessed Anopheles species. This study suggests that 1-benzyl-N-(thiazol-2-yl) piperidine-4-carboxamide 2 may be a lead compound for designing novel insecticides against Anopheles vectors with reduced toxic potential on humans.
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Affiliation(s)
- Thankhoe A. Rants’o
- Pharmacology Division, Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- WITS Research Institute for Malaria (WRIM), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- * E-mail:
| | - Divan G. van Greunen
- Department of Chemistry, Natural and Agricultural Sciences, University of Pretoria, Tshwane, South Africa
| | - C. Johan van der Westhuizen
- Department of Chemistry, Natural and Agricultural Sciences, University of Pretoria, Tshwane, South Africa
- Pharmaceutical Technologies, CSIR Future Production: Chemicals, Tshwane, South Africa
| | - Darren L. Riley
- Department of Chemistry, Natural and Agricultural Sciences, University of Pretoria, Tshwane, South Africa
| | - Jenny-Lee Panayides
- Pharmaceutical Technologies, CSIR Future Production: Chemicals, Tshwane, South Africa
| | - Lizette L. Koekemoer
- WITS Research Institute for Malaria (WRIM), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Centre for Emerging Zoonotic and Parasitic Diseases, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg, South Africa
| | - Robyn L. van Zyl
- Pharmacology Division, Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- WITS Research Institute for Malaria (WRIM), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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1,2,3-Triazolyl-tetrahydropyrimidine Conjugates as Potential Sterol Carrier Protein-2 Inhibitors: Larvicidal Activity against the Malaria Vector Anopheles arabiensis and In Silico Molecular Docking Study. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27092676. [PMID: 35566029 PMCID: PMC9102322 DOI: 10.3390/molecules27092676] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 04/17/2022] [Accepted: 04/19/2022] [Indexed: 12/18/2022]
Abstract
Alteration of insect growth regulators by the action of inhibitors is becoming an attractive strategy to combat disease-transmitting insects. In the present study, we investigated the larvicidal effect of 1,2,3-triazolyl-pyrimidinone derivatives against the larvae of the mosquito Anopheles arabiensis, a vector of malaria. All compounds demonstrated insecticidal activity against mosquito larvae in a dose-dependent fashion. A preliminary study of the structure-activity relationship indicated that the electron-withdrawing substituent in the para position of the 4-phenyl-pyrimidinone moiety enhanced the molecules' potency. A docking study of these derivatives revealed favorable binding affinity for the sterol carrier protein-2 receptor, a protein present in the intestine of the mosquito larvae. Being effective insecticides against the malaria-transmitting Anopheles arabiensis, 1,2,3-triazole-based pyrimidinones represent a starting point to develop novel inhibitors of insect growth regulators.
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Perrier S, Moreau E, Deshayes C, El-Adouzi M, Goven D, Chandre F, Lapied B. Compensatory mechanisms in resistant Anopheles gambiae AcerKis and KdrKis neurons modulate insecticide-based mosquito control. Commun Biol 2021; 4:665. [PMID: 34079061 PMCID: PMC8172894 DOI: 10.1038/s42003-021-02192-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 05/06/2021] [Indexed: 02/04/2023] Open
Abstract
In the malaria vector Anopheles gambiae, two point mutations in the acetylcholinesterase (ace-1R) and the sodium channel (kdrR) genes confer resistance to organophosphate/carbamate and pyrethroid insecticides, respectively. The mechanisms of compensation that recover the functional alterations associated with these mutations and their role in the modulation of insecticide efficacy are unknown. Using multidisciplinary approaches adapted to neurons isolated from resistant Anopheles gambiae AcerKis and KdrKis strains together with larval bioassays, we demonstrate that nAChRs, and the intracellular calcium concentration represent the key components of an adaptation strategy ensuring neuronal functions maintenance. In AcerKis neurons, the increased effect of acetylcholine related to the reduced acetylcholinesterase activity is compensated by expressing higher density of nAChRs permeable to calcium. In KdrKis neurons, changes in the biophysical properties of the L1014F mutant sodium channel, leading to enhance overlap between activation and inactivation relationships, diminish the resting membrane potential and reduce the fraction of calcium channels available involved in acetylcholine release. Together with the lower intracellular basal calcium concentration observed, these factors increase nAChRs sensitivity to maintain the effect of low concentration of acetylcholine. These results explain the opposite effects of the insecticide clothianidin observed in AcerKis and KdrKis neurons in vitro and in vivo.
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Affiliation(s)
| | | | | | | | | | - Fabrice Chandre
- MIVEGEC, UMR IRD 224-CNRS 5290-Université de Montpellier, 911 avenue Agropolis, Montpellier, Cedex 05, France
| | - Bruno Lapied
- Univ Angers, INRAE, SIFCIR, SFR QUASAV, Angers, France.
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Andrys R, Gorecki L, Korabecny J, Musilek K. Reply to Comment on "Cysteine-Targeted Insecticides against A. gambiae Acetylcholinesterase Are Neither Selective nor Reversible Inhibitors". ACS Med Chem Lett 2020; 11:1065-1066. [PMID: 32550977 DOI: 10.1021/acsmedchemlett.0c00251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 05/19/2020] [Indexed: 11/29/2022] Open
Affiliation(s)
- Rudolf Andrys
- University of Hradec Kralove, Faculty of Science, Department of Chemistry, Rokitanskeho 62, 500 03 Hradec Kralove, Czech Republic
| | - Lukas Gorecki
- University Hospital Hradec Kralove, Biomedical Research Centre, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
- University of Defence, Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic
| | - Jan Korabecny
- University Hospital Hradec Kralove, Biomedical Research Centre, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
- University of Defence, Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic
| | - Kamil Musilek
- University of Hradec Kralove, Faculty of Science, Department of Chemistry, Rokitanskeho 62, 500 03 Hradec Kralove, Czech Republic
- University Hospital Hradec Kralove, Biomedical Research Centre, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
- Florida International University, Herbert Wertheim College of Medicine, Department of Cellular Biology & Pharmacology, 11200 SW Eighth Street GL 495-G, Miami, Florida 33199, United States
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Gorecki L, Andrys R, Schmidt M, Kucera T, Psotka M, Svobodova B, Hrabcova V, Hepnarova V, Bzonek P, Jun D, Kuca K, Korabecny J, Musilek K. Cysteine-Targeted Insecticides against A. gambiae Acetylcholinesterase Are Neither Selective nor Reversible Inhibitors. ACS Med Chem Lett 2020; 11:65-71. [PMID: 31938465 DOI: 10.1021/acsmedchemlett.9b00477] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 11/26/2019] [Indexed: 11/28/2022] Open
Abstract
Acetylcholinesterase cysteine-targeted insecticides against malaria vector Anopheles gambia and other mosquitos have already been introduced. We have applied the olefin metathesis for the preparation of cysteine-targeted insecticides in high yields. The prepared compounds with either a succinimide or maleimide moiety were evaluated on Anopheles gambiae and human acetylcholinesterase with relatively high irreversible inhibition of both enzymes but poor selectivity. The concept of cysteine binding was not proved by several methods, and poor stability was observed of the chosen most potent/selective compounds in a water/buffer environment. Thus, our findings do not support the proposed concept of cysteine-targeted selective insecticides for the prepared series of succinimide or maleimide compounds.
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Affiliation(s)
- Lukas Gorecki
- University Hospital Hradec Kralove, Biomedical Research Centre, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
- University of Defence, Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic
| | - Rudolf Andrys
- University of Hradec Kralove, Faculty of Science, Department of Chemistry, Rokitanskeho 62, 500 03 Hradec Kralove, Czech Republic
| | - Monika Schmidt
- University Hospital Hradec Kralove, Biomedical Research Centre, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
- University of Hradec Kralove, Faculty of Science, Department of Chemistry, Rokitanskeho 62, 500 03 Hradec Kralove, Czech Republic
| | - Tomas Kucera
- University of Defence, Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic
| | - Miroslav Psotka
- University Hospital Hradec Kralove, Biomedical Research Centre, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
- University of Hradec Kralove, Faculty of Science, Department of Chemistry, Rokitanskeho 62, 500 03 Hradec Kralove, Czech Republic
| | - Barbora Svobodova
- University Hospital Hradec Kralove, Biomedical Research Centre, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
- University of Defence, Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic
| | - Veronika Hrabcova
- University of Hradec Kralove, Faculty of Science, Department of Chemistry, Rokitanskeho 62, 500 03 Hradec Kralove, Czech Republic
- University of Defence, Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic
| | - Vendula Hepnarova
- University Hospital Hradec Kralove, Biomedical Research Centre, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
- University of Defence, Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic
| | - Petr Bzonek
- University of Hradec Kralove, Faculty of Science, Department of Chemistry, Rokitanskeho 62, 500 03 Hradec Kralove, Czech Republic
- University of Defence, Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic
| | - Daniel Jun
- University Hospital Hradec Kralove, Biomedical Research Centre, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
- University of Defence, Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic
| | - Kamil Kuca
- University of Hradec Kralove, Faculty of Science, Department of Chemistry, Rokitanskeho 62, 500 03 Hradec Kralove, Czech Republic
| | - Jan Korabecny
- University Hospital Hradec Kralove, Biomedical Research Centre, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
- University of Defence, Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic
| | - Kamil Musilek
- University Hospital Hradec Kralove, Biomedical Research Centre, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
- University of Hradec Kralove, Faculty of Science, Department of Chemistry, Rokitanskeho 62, 500 03 Hradec Kralove, Czech Republic
- Florida International University, Herbert Wertheim College of Medicine, Department of Cellular Biology & Pharmacology, 11200 SW Eighth Street GL 495-G Miami, Florida 33199, United States
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Swale DR. Perspectives on new strategies for the identification and development of insecticide targets. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2019; 161:23-32. [PMID: 31685193 DOI: 10.1016/j.pestbp.2019.07.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 07/02/2019] [Accepted: 07/02/2019] [Indexed: 06/10/2023]
Abstract
The discovery and development of new active ingredients to control arthropod populations and circumvent the inevitable evolution of insecticide resistance has been of consistent interest to the field of insecticide science. This interest has resulted in a slow, but steady increase in the diversity of chemical scaffolds and biochemical target sites within the insecticide arsenal over the past 70 years with growth from three biochemical target sites in the 1950s to 22 distinct biochemical targets in 2018. Despite this growth, the number of biochemical target sites for insecticides remains relatively limited when compared to human pharmaceuticals, which has approximately 700 distinct biochemical targets that are targeted by FDA approved drugs. Potential reasons for this large discrepancy between two closely related fields and putative mechanisms to enhance the identification of tractable biochemical targets for insecticides are discussed. Next, this perspective discusses the movement of insecticide science into the "genomic era" and for comparative purposes, I provide a retrospective analysis of the impact the release of the human genome had to human pharmaceutical development. Based on this analysis and because the fields of insecticide science and human pharmaceuticals mirror each other, researchers in the field of insecticide science would do well to heed the lessons learned by the human pharmaceutical industry and to carefully consider the challenges that arise from genomic approaches for chemical development. Lastly, I pose the question if the field of insecticide science would benefit from adapting an industry-academia model through the generation of industry-sponsored centers of excellence. The goal of this article is not to definitively describe strategies to enhance insecticide development, but rather present different thoughts on agrochemical development that will foster discussions among academic, government, and industry scientists to address current and future problems in the field of insecticide science.
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Affiliation(s)
- Daniel R Swale
- Department of Entomology, Louisiana State University AgCenter, Baton Rouge, LA 70803, United States of America.
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Lule-Chávez AN, Avila EE, González-de-la-Vara LE, Salas-Marina MA, Ibarra JE. Detrimental Effects of Induced Antibodies on Aedes aegypti Reproduction. NEOTROPICAL ENTOMOLOGY 2019; 48:706-716. [PMID: 30941675 DOI: 10.1007/s13744-019-00678-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 03/07/2019] [Indexed: 06/09/2023]
Abstract
Aedes aegypti (Linnaeus) (Diptera: Culicidae) is the main vector of viruses causing dengue, chikungunya, Zika, and yellow fever, worldwide. This report focuses on immuno-blocking four critical proteins in the female mosquito when fed on blood containing antibodies against ferritin, transferrin, one amino acid transporter (NAAT1), and acetylcholinesterase (AchE). Peptides from these proteins were selected, synthetized, conjugated to carrier proteins, and used as antigens to immunize New Zealand rabbits. After rabbits were immunized, a minimum of 20 female mosquitos were fed on each rabbit, per replicate. No effect in their viability was observed after blood-feeding; however, the number of infertile females was 20% higher than the control when fed on AchE-immunized rabbits. The oviposition period was significantly longer in females fed on immunized rabbits than those fed on control (non-immunized) rabbits. Fecundity (eggs/female) of treated mosquitoes was significantly reduced (about 50%) in all four treatments, as compared with the control. Fertility (hatched larvae) was also significantly reduced in all four treatments, as compared with the control, being the effect on AchE and transferrin the highest, by reducing hatching between 70 and 80%. Survival to the adult stage of the hatched larvae showed no significant effect, as more than 95% survival was observed in all treatments, including the control. In conclusion, immuno-blocking of these four proteins caused detrimental effects on the mosquito reproduction, being the effect on AchE the most significant.
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Affiliation(s)
- A N Lule-Chávez
- Depto de Biotecnología y Bioquímica, Centro de Investigación y de Estudios Avanzados del IPN, Irapuato, Gto., Mexico
| | - E E Avila
- Depto de Biología, Univ de Guanajuato, Guanajuato, Gto., Mexico
| | - L E González-de-la-Vara
- Depto de Biotecnología y Bioquímica, Centro de Investigación y de Estudios Avanzados del IPN, Irapuato, Gto., Mexico
| | - M A Salas-Marina
- Depto de Biotecnología y Bioquímica, Centro de Investigación y de Estudios Avanzados del IPN, Irapuato, Gto., Mexico
| | - J E Ibarra
- Depto de Biotecnología y Bioquímica, Centro de Investigación y de Estudios Avanzados del IPN, Irapuato, Gto., Mexico.
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Deshayes C, Moreau E, Pitti-Caballero J, Froger JA, Apaire-Marchais V, Lapied B. Synergistic agent and intracellular calcium, a successful partnership in the optimization of insecticide efficacy. CURRENT OPINION IN INSECT SCIENCE 2018; 30:52-58. [PMID: 30553485 DOI: 10.1016/j.cois.2018.09.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 09/17/2018] [Accepted: 09/19/2018] [Indexed: 06/09/2023]
Abstract
Integrated Pest Management and Integrated Vector Management worldwide are developed in agriculture and public health to counteract and limit the exponential increasing development of insect resistance to insecticides. However, facing the predominance of some resistant populations, new strategies are urgently needed to target resistant insects. An innovative approach lies in the optimization of commonly used insecticides when combined with chemical or biological synergistic agents. By an increase of intracellular calcium concentration followed by activation of calcium-dependant signalling pathways, the synergistic agents are able to indirectly increase target sites sensitivity to insecticide by inducing conformational change. The synergistic agents are of great interest in optimizing the efficacy of insecticides and in overcoming resistance mechanisms.
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Affiliation(s)
- Caroline Deshayes
- Laboratoire Signalisation Fonctionnelle des Canaux Ioniques et Récepteurs (SiFCIR), UPRES-EA 2647, USC INRA 1330, SFR 4207 QUASAV, UFR Sciences, Université d'Angers, 2 Boulevard Lavoisier, F-49045 Angers Cedex, France
| | - Eléonore Moreau
- Laboratoire Signalisation Fonctionnelle des Canaux Ioniques et Récepteurs (SiFCIR), UPRES-EA 2647, USC INRA 1330, SFR 4207 QUASAV, UFR Sciences, Université d'Angers, 2 Boulevard Lavoisier, F-49045 Angers Cedex, France
| | - Javier Pitti-Caballero
- Laboratoire Signalisation Fonctionnelle des Canaux Ioniques et Récepteurs (SiFCIR), UPRES-EA 2647, USC INRA 1330, SFR 4207 QUASAV, UFR Sciences, Université d'Angers, 2 Boulevard Lavoisier, F-49045 Angers Cedex, France
| | - Josy-Anne Froger
- Laboratoire Signalisation Fonctionnelle des Canaux Ioniques et Récepteurs (SiFCIR), UPRES-EA 2647, USC INRA 1330, SFR 4207 QUASAV, UFR Sciences, Université d'Angers, 2 Boulevard Lavoisier, F-49045 Angers Cedex, France
| | - Véronique Apaire-Marchais
- Laboratoire Signalisation Fonctionnelle des Canaux Ioniques et Récepteurs (SiFCIR), UPRES-EA 2647, USC INRA 1330, SFR 4207 QUASAV, UFR Sciences, Université d'Angers, 2 Boulevard Lavoisier, F-49045 Angers Cedex, France
| | - Bruno Lapied
- Laboratoire Signalisation Fonctionnelle des Canaux Ioniques et Récepteurs (SiFCIR), UPRES-EA 2647, USC INRA 1330, SFR 4207 QUASAV, UFR Sciences, Université d'Angers, 2 Boulevard Lavoisier, F-49045 Angers Cedex, France.
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11
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Schmidt M, Hrabcova V, Jun D, Kuca K, Musilek K. Vector Control and Insecticidal Resistance in the African Malaria Mosquito Anopheles gambiae. Chem Res Toxicol 2018; 31:534-547. [PMID: 29847927 DOI: 10.1021/acs.chemrestox.7b00285] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Mosquito-borne diseases (including malaria) belong among the leading causes of death in humans. Vector control is a crucial part of the global strategy for management of mosquito-associated diseases, when insecticide use is the most important component in this effort. However, drug and insecticide resistance threaten the successes made with existing methods. Reduction or elimination of malaria is not possible without effective mosquito control. This article reviews current strategies of intervention in vector control to decrease transmission of disease and covers current relevant knowledge in molecular biology, biochemistry, and medicinal chemistry.
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Affiliation(s)
- Monika Schmidt
- Biomedical Research Centre , University Hospital Hradec Kralove , Sokolska 581 , 500 05 Hradec Kralove , Czech Republic.,Faculty of Science, Department of Chemistry , University of Hradec Kralove , Rokitanskeho 62 , 500 03 Hradec Kralove , Czech Republic
| | - Veronika Hrabcova
- Biomedical Research Centre , University Hospital Hradec Kralove , Sokolska 581 , 500 05 Hradec Kralove , Czech Republic.,Faculty of Science, Department of Chemistry , University of Hradec Kralove , Rokitanskeho 62 , 500 03 Hradec Kralove , Czech Republic
| | - Daniel Jun
- Biomedical Research Centre , University Hospital Hradec Kralove , Sokolska 581 , 500 05 Hradec Kralove , Czech Republic.,Faculty of Military Health Sciences, Department of Toxicology and Military Pharmacy , University of Defence , Trebesska 1575 , 500 01 Hradec Kralove , Czech Republic
| | - Kamil Kuca
- Biomedical Research Centre , University Hospital Hradec Kralove , Sokolska 581 , 500 05 Hradec Kralove , Czech Republic.,Faculty of Science, Department of Chemistry , University of Hradec Kralove , Rokitanskeho 62 , 500 03 Hradec Kralove , Czech Republic
| | - Kamil Musilek
- Biomedical Research Centre , University Hospital Hradec Kralove , Sokolska 581 , 500 05 Hradec Kralove , Czech Republic.,Faculty of Science, Department of Chemistry , University of Hradec Kralove , Rokitanskeho 62 , 500 03 Hradec Kralove , Czech Republic
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Cheung J, Mahmood A, Kalathur R, Liu L, Carlier PR. Structure of the G119S Mutant Acetylcholinesterase of the Malaria Vector Anopheles gambiae Reveals Basis of Insecticide Resistance. Structure 2017; 26:130-136.e2. [PMID: 29276037 DOI: 10.1016/j.str.2017.11.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 11/01/2017] [Accepted: 11/27/2017] [Indexed: 10/18/2022]
Abstract
Malaria is a devastating disease in sub-Saharan Africa and is transmitted by the mosquito Anopheles gambiae. While indoor residual spraying of anticholinesterase insecticides has been useful in controlling the spread of malaria, widespread application of these compounds has led to the rise of an insecticide-resistant mosquito strain that harbors a G119S mutation in the nervous system target enzyme acetylcholinesterase. We demonstrate the atomic basis of insecticide resistance through structure determination of the G119S mutant acetylcholinesterase of An. gambiae in the ligand-free state and bound to a potent difluoromethyl ketone inhibitor. These structures reveal specific features within the active-site gorge distinct from human acetylcholinesterase, including an open channel at the base of the gorge, and provide a means for improving species selectivity in the rational design of improved insecticides for malaria vector control.
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Affiliation(s)
- Jonah Cheung
- New York Structural Biology Center, 89 Convent Avenue, New York, NY 10027, USA.
| | - Arshad Mahmood
- New York Structural Biology Center, 89 Convent Avenue, New York, NY 10027, USA
| | - Ravi Kalathur
- New York Structural Biology Center, 89 Convent Avenue, New York, NY 10027, USA
| | - Lixuan Liu
- Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, USA
| | - Paul R Carlier
- Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, USA
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Meng X, Xu X, Bao H, Wang J, Liu Z. Characterization of the Fifth Putative Acetylcholinesterase in the Wolf Spider, Pardosa pseudoannulata. Molecules 2017; 22:E1118. [PMID: 28696352 PMCID: PMC6152279 DOI: 10.3390/molecules22071118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 06/29/2017] [Accepted: 07/01/2017] [Indexed: 11/17/2022] Open
Abstract
Background: Acetylcholinesterase (AChE) is an important neurotransmitter hydrolase in invertebrate and vertebrate nervous systems. The number of AChEs is various among invertebrate species, with different functions including the 'classical' role in terminating synaptic transmission and other 'non-classical' roles. Methods: Using rapid amplification of cDNA ends (RACE) technology, a new putative AChE-encoding gene was cloned from Pardosa pseudoannulata, an important predatory natural enemy. Sequence analysis and in vitro expression were employed to determine the structural features and biochemical properties of this putative AChE. Results: The cloned AChE contained the most conserved motifs of AChEs family and was clearly clustered with Arachnida AChEs. Determination of biochemical properties revealed that the recombinant enzyme had the obvious preference for the substrate ATC (acetylthiocholine iodide) versus BTC (butyrylthiocholine iodide). The AChE was highly sensitive to AChE-specific inhibitor BW284C51, but not butyrylcholinesterase-specific inhibitor tetraisopropyl pyrophosphoramide (ISO-OMPA). Based on these results, we concluded that a new AChE was identified from P. pseudoannulata and denoted as PpAChE5. Conclusion: Here we report the identification of a new AChE from P. pseudoannulata and increased the AChE number to five in this species. Although PpAChE5 had the biggest Vmax value among five identified AChEs, it showed relatively low affinity with ATC. Similar sensitivity to test insecticides indicated that this AChE might serve as the target for both organophosphorus and carbamate insecticides.
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Affiliation(s)
- Xiangkun Meng
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China.
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China.
| | - Xixia Xu
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China.
| | - Haibo Bao
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China.
| | - Jianjun Wang
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China.
| | - Zewen Liu
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China.
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