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Tsai M, Sun J, Alexandre C, Shapiro M, Franchet A, Li Y, Gould AP, Vincent JP, Stockinger B, Diny NL. Drosophila AHR limits tumor growth and stem cell proliferation in the intestine. Wellcome Open Res 2025; 10:38. [PMID: 40212817 PMCID: PMC11982807 DOI: 10.12688/wellcomeopenres.23515.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/23/2025] [Indexed: 04/29/2025] Open
Abstract
Background The aryl hydrocarbon receptor (AHR) plays important roles in intestinal homeostasis, limiting tumour growth and promoting differentiation in the intestinal epithelium. Spineless, the Drosophila homolog of AHR, has only been studied in the context of development but not in the adult intestine. Methods The role of Spineless in the Drosophila midgut was studied by overexpression or inactivation of Spineless in infection and tumour models and RNA sequencing of sorted midgut progenitor cells. Results We show that spineless is upregulated in the adult intestinal epithelium after infection with Pseudomonas entomophila ( P. e.). Spineless inactivation increased stem cell proliferation following infection-induced injury. Spineless overexpression limited intestinal stem cell proliferation and reduced survival after infection. In two tumour models, using either Notch RNAi or constitutively active Yorkie, Spineless suppressed tumour growth and doubled the lifespan of tumour-bearing flies. At the transcriptional level it reversed the gene expression changes induced in Yorkie tumours, counteracting cell proliferation and altered metabolism. Conclusions These findings demonstrate a new role for Spineless in the adult Drosophila midgut and highlight the evolutionarily conserved functions of AHR/Spineless in the control of proliferation and differentiation of the intestinal epithelium.
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Affiliation(s)
- Minghua Tsai
- The Francis Crick Institute, London, England, NW1 1AT, UK
| | - Jiawei Sun
- The Francis Crick Institute, London, England, NW1 1AT, UK
| | | | | | | | - Ying Li
- The Francis Crick Institute, London, England, NW1 1AT, UK
| | - Alex P. Gould
- The Francis Crick Institute, London, England, NW1 1AT, UK
| | | | | | - Nicola Laura Diny
- The Francis Crick Institute, London, England, NW1 1AT, UK
- Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, Bonn, North Rhine-Westphalia, 53127, Germany
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2
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Wen X, Feng K, Qin J, Wei P, Cao P, Zhang Y, Yuchi Z, He L. A detoxification pathway initiated by a nuclear receptor TcHR96h in Tetranychus cinnabarinus (Boisduval). PLoS Genet 2023; 19:e1010911. [PMID: 37708138 PMCID: PMC10501649 DOI: 10.1371/journal.pgen.1010911] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 08/09/2023] [Indexed: 09/16/2023] Open
Abstract
Understanding the mechanism of detoxification initiation in arthropods after pesticide exposure is crucial. Although the identity of transcription factors that induce and regulate the expression of detoxification genes in response to pesticides is beginning to emerge, whether transcription factors directly interact with xenobiotics is unclear. The findings of this study revealed that a nuclear hormone receptor, Tetranychus cinnabarinus hormone receptor (HR) TcHR96h, regulates the overexpression of the detoxification gene TcGSTm02, which is involved in cyflumetofen resistance. The nuclear translocation of TcHR96h increased after cyflumetofen exposure, suggesting direct binding with cyflumetofen. The direct binding of TcHR96h and cyflumetofen was supported by several independent proteomic assays that quantify interactions with small molecules. Together, this study proposes a model for the initiation of xenobiotic detoxification in a polyphagous agricultural pest. These insights not only provide a better understanding of the mechanisms of xenobiotic detoxification and metabolism in arthropods, but also are crucial in understanding adaptation in polyphagous herbivores.
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Affiliation(s)
- Xiang Wen
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
- Key Laboratory of Agricultural Biosafety and Green Production of Upper Yangtze River, Ministry of Education, Chongqing, China
- National Citrus Engineering Research Center, Southwest University, Chongqing, China
| | - Kaiyang Feng
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
- Key Laboratory of Agricultural Biosafety and Green Production of Upper Yangtze River, Ministry of Education, Chongqing, China
- National Citrus Engineering Research Center, Southwest University, Chongqing, China
| | - Juan Qin
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, Collaborative Innovation Center of Chemical Science and Engineering, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Peng Wei
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
- Key Laboratory of Agricultural Biosafety and Green Production of Upper Yangtze River, Ministry of Education, Chongqing, China
- National Citrus Engineering Research Center, Southwest University, Chongqing, China
| | - Peng Cao
- Key Laboratory of Drug Targets and Drug Leads for Degenerative Diseases, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Youjun Zhang
- Department of Plants and Crops, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zhiguang Yuchi
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, Collaborative Innovation Center of Chemical Science and Engineering, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Lin He
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
- Key Laboratory of Agricultural Biosafety and Green Production of Upper Yangtze River, Ministry of Education, Chongqing, China
- National Citrus Engineering Research Center, Southwest University, Chongqing, China
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3
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Zatsepina OG, Chuvakova LN, Nikitina EA, Rezvykh AP, Zakluta AS, Sarantseva SV, Surina NV, Ksenofontov AL, Baratova LA, Shilova VY, Evgen’ev MB. Genes Responsible for H 2S Production and Metabolism Are Involved in Learning and Memory in Drosophila melanogaster. Biomolecules 2022; 12:751. [PMID: 35740876 PMCID: PMC9221306 DOI: 10.3390/biom12060751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 12/13/2022] Open
Abstract
The gasotransmitter hydrogen sulfide (H2S) produced by the transsulfuration pathway (TSP) is an important biological mediator, involved in many physiological and pathological processes in multiple higher organisms, including humans. Cystathionine-β-synthase (CBS) and cystathionine-γ-lyase (CSE) enzymes play a central role in H2S production and metabolism. Here, we investigated the role of H2S in learning and memory processes by exploring several Drosophila melanogaster strains with single and double deletions of CBS and CSE developed by the CRISPR/Cas9 technique. We monitored the learning and memory parameters of these strains using the mating rejection courtship paradigm and demonstrated that the deletion of the CBS gene, which is expressed predominantly in the central nervous system, and double deletions completely block short- and long-term memory formation in fruit flies. On the other hand, the flies with CSE deletion preserve short- and long-term memory but fail to exhibit long-term memory retention. Transcriptome profiling of the heads of the males from the strains with deletions in Gene Ontology terms revealed a strong down-regulation of many genes involved in learning and memory, reproductive behavior, cognition, and the oxidation-reduction process in all strains with CBS deletion, indicating an important role of the hydrogen sulfide production in these vital processes.
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Affiliation(s)
- Olga G. Zatsepina
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (O.G.Z.); (L.N.C.); (A.P.R.); (A.S.Z.); (V.Y.S.)
| | - Lyubov N. Chuvakova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (O.G.Z.); (L.N.C.); (A.P.R.); (A.S.Z.); (V.Y.S.)
| | - Ekaterina A. Nikitina
- Department of Neurogenetics, Pavlov Institute of Physiology, 199034 Saint Petersburg, Russia;
- Department of Human and Animal Anatomy and Physiology, Herzen State Pedagogical University, 191186 Saint Petersburg, Russia
| | - Alexander P. Rezvykh
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (O.G.Z.); (L.N.C.); (A.P.R.); (A.S.Z.); (V.Y.S.)
| | - Alexey S. Zakluta
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (O.G.Z.); (L.N.C.); (A.P.R.); (A.S.Z.); (V.Y.S.)
| | - Svetlana V. Sarantseva
- Petersburg Institute of Nuclear Physics, Russian Academy of Sciences, 188300 Gatchina, Russia; (S.V.S.); (N.V.S.)
| | - Nina V. Surina
- Petersburg Institute of Nuclear Physics, Russian Academy of Sciences, 188300 Gatchina, Russia; (S.V.S.); (N.V.S.)
| | - Alexander L. Ksenofontov
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119991 Moscow, Russia; (A.L.K.); (L.A.B.)
| | - Ludmila A. Baratova
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119991 Moscow, Russia; (A.L.K.); (L.A.B.)
| | - Viktoria Y. Shilova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (O.G.Z.); (L.N.C.); (A.P.R.); (A.S.Z.); (V.Y.S.)
| | - Michael B. Evgen’ev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (O.G.Z.); (L.N.C.); (A.P.R.); (A.S.Z.); (V.Y.S.)
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4
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Gao L, Qiao H, Wei P, Moussian B, Wang Y. Xenobiotic responses in insects. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2022; 109:e21869. [PMID: 35088911 DOI: 10.1002/arch.21869] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/27/2021] [Accepted: 01/03/2022] [Indexed: 06/14/2023]
Abstract
Insects have evolved a powerful detoxification system to protect themselves against environmental and anthropogenic xenobiotics including pesticides and nanoparticles. The resulting tolerance to insecticides is an immense problem in agriculture. In this study, we summarize advances in our understanding of insect xenobiotic responses: the detoxification strategies and the regulation mechanisms against xenobiotics including nanoparticles, the problem of response specificity and the potential usefulness of this study field for an elaborate pest management. In particular, we highlight that versatility of the detoxification system relies on the relatively unspecific recognition of a broad range of potential toxic substances that trigger either of various canonical xenobiotic responses signaling pathways, including CncC/Keap1, HR96, AHR/ARNT, GPCR, and MAPK/CREB. However, it has emerged that the actual response to an inducer may nevertheless be specific. There are two nonexclusive possibilities that may explain response specificity: (1) differential cross-talk between the known pathways and (2) additional, yet unidentified regulators and pathways of detoxification. Hence, a deeper and broader understanding of the regulation mechanisms of xenobiotic response in insects in the future might facilitate the development and application of highly efficient and environmentally friendly pest control methods, allowing us to face the challenge of the world population growth.
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Affiliation(s)
- Lujuan Gao
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Huanhuan Qiao
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
| | - Peng Wei
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
| | - Bernard Moussian
- Animal Genetics, Interfaculty Institute of Cell Biology, University of Tübingen, Tübingen, Germany
- Université Côte d'Azur, Parc Valrose, Nice, France
| | - Yiwen Wang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
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Zhuravlev AV, Shchegolev BF, Zakharov GA, Ivanova PN, Nikitina EA, Savvateeva-Popova EV. 3-Hydroxykynurenine as a Potential Ligand for Hsp70 Proteins and Its Effects on Drosophila Memory After Heat Shock. Mol Neurobiol 2022; 59:1862-1871. [PMID: 35029786 DOI: 10.1007/s12035-021-02704-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 12/15/2021] [Indexed: 12/21/2022]
Abstract
Kynurenine products of tryptophan metabolism are modifiers of the nervous activity and oxidative processes in mammals and invertebrates. 3-Hydroxykynurenine (3HOK) in moderate concentrations is a lipid peroxidation inhibitor. However, its accumulation and oxidative auto-dimerization lead to oxidative stress development manifested in age-related neurodegenerative diseases (NDD) and neurological disorders provoked by acute stress. Different forms of stress, the mostly studied being heat shock response, rely on functioning of heat shock proteins of the Hsp70 superfamily. Since kynurenines are called "kids of stress," we performed computational estimation of affinity of 3HOK and other kynurenines binding to predicted ATP site of Drosophila melanogaster Hsp cognate 71 protein (Dhsp71) using AutoDock Vina. The binding energy of 3HOK dimer is - 9.4 kcal/mol; its orientation within the active site is close to that of ATP. This might be a new mechanism of producing a competitive inhibitor of Hsp70 chaperones that decreases organism ability to adapt to heat shock. We also showed that the Drosophila cardinal (cd1) mutant with 3HOK excess, serving as a model for Huntington's disease (HD), manifests severe defects of short-term memory after heat shock applied either in adults or at the prepupal stage.
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Affiliation(s)
- Aleksandr V Zhuravlev
- Neurogenetics Laboratory, Pavlov Institute of Physiology RAS, St. Petersburg, Russia.
| | - Boris F Shchegolev
- Neurogenetics Laboratory, Pavlov Institute of Physiology RAS, St. Petersburg, Russia
| | - Gennadii A Zakharov
- Neurogenetics Laboratory, Pavlov Institute of Physiology RAS, St. Petersburg, Russia
| | - Polina N Ivanova
- Neurogenetics Laboratory, Pavlov Institute of Physiology RAS, St. Petersburg, Russia
| | - Ekaterina A Nikitina
- Neurogenetics Laboratory, Pavlov Institute of Physiology RAS, St. Petersburg, Russia
- Department of Human and Animal Anatomy and Physiology, Herzen State Pedagogical University of Russia, St. Petersburg, Russia
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6
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Multidrug Resistance Like Protein 1 Activity in Malpighian Tubules Regulates Lipid Homeostasis in Drosophila. MEMBRANES 2021; 11:membranes11060432. [PMID: 34201304 PMCID: PMC8229909 DOI: 10.3390/membranes11060432] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/30/2021] [Accepted: 06/05/2021] [Indexed: 11/16/2022]
Abstract
Simple Summary Multidrug resistance proteins (MRPs) are important for ion transport, toxin/xenobiotic secretion, and signal transduction. Although studies have been undertaken to understand their physiological function, it is not fully known how MRPs may regulate metabolism. We knocked down the expression of Drosophila multidrug-resistance like protein 1 (MRP) in several tissues central to metabolic regulation. Reducing MRP in Malpighian tubules, the functional equivalent to the human kidney, was sufficient to disrupt metabolic homeostasis, owing to abnormal lipid accumulation, as well as changes in feeding behavior. It also increased oxidative stress resistance in adult flies, possibly due to reduced levels of reactive oxygen species. Abstract Multidrug resistance proteins (MRPs), members of the ATP-binding cassette transporter (ABC transporter) family, are pivotal for transporting endo- and xenobiotics, which confer resistance to anticancer agents and contribute to the clearance of oxidative products. However, their function in many biological processes is still unclear. We investigated the role of an evolutionarily conserved MRP in metabolic homeostasis by knocking down the expression of Drosophila multidrug-resistance like protein 1 (MRP) in several tissues involved in regulating metabolism, including the gut, fat body, and Malpighian tubules. Interestingly, only suppression of MRP in the Malpighian tubules, the functional equivalent to the human kidney, was sufficient to cause abnormal lipid accumulation and disrupt feeding behavior. Furthermore, reduced Malpighian tubule MRP expression resulted in increased Hr96 (homolog of human pregnane X receptor) expression. Hr96 is known to play a role in detoxification and lipid metabolism processes. Reduced expression of MRP in the Malpighian tubules also conveyed resistance to oxidative stress, as well as reduced normal levels of reactive oxygen species in adult flies. This study reveals that an evolutionarily conserved MRP is required in Drosophila Malpighian tubules for proper metabolic homeostasis.
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7
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Zatsepina OG, Nikitina EA, Shilova VY, Chuvakova LN, Sorokina S, Vorontsova JE, Tokmacheva EV, Funikov SY, Rezvykh AP, Evgen'ev MB. Hsp70 affects memory formation and behaviorally relevant gene expression in Drosophila melanogaster. Cell Stress Chaperones 2021; 26:575-594. [PMID: 33829398 PMCID: PMC8065088 DOI: 10.1007/s12192-021-01203-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 03/20/2021] [Accepted: 03/23/2021] [Indexed: 12/13/2022] Open
Abstract
Heat shock proteins, in particular Hsp70, play a central role in proteostasis in eukaryotic cells. Due to its chaperone properties, Hsp70 is involved in various processes after stress and under normal physiological conditions. In contrast to mammals and many Diptera species, inducible members of the Hsp70 family in Drosophila are constitutively synthesized at a low level and undergo dramatic induction after temperature elevation or other forms of stress. In the courtship suppression paradigm used in this study, Drosophila males that have been repeatedly rejected by mated females during courtship are less likely than naive males to court other females. Although numerous genes with known function were identified to play important roles in long-term memory, there is, to the best of our knowledge, no direct evidence implicating Hsp70 in this process. To elucidate a possible role of Hsp70 in memory formation, we used D. melanogaster strains containing different hsp70 copy numbers, including strains carrying a deletion of all six hsp70 genes. Our investigations exploring the memory of courtship rejection paradigm demonstrated that a low constitutive level of Hsp70 is apparently required for learning and the formation of short and long-term memories in males. The performed transcriptomic studies demonstrate that males with different hsp70 copy numbers differ significantly in the expression of a few definite groups of genes involved in mating, reproduction, and immunity in response to rejection. Specifically, our analysis reveals several major pathways that depend on the presence of hsp70 in the genome and participate in memory formation and consolidation, including the cAMP signaling cascade.
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Affiliation(s)
- O G Zatsepina
- Engelhardt Institute of Molecular Biology of Russian Academy of Sciences, Moscow, Russia
| | - E A Nikitina
- Department of Neurogenetics, Pavlov Institute of Physiology, Russian Academy of Sciences, St. Petersburg, Russia
- Department of Human and Animal Anatomy and Physiology, Herzen State Pedagogical University, St. Petersburg, Russia
| | - V Y Shilova
- Engelhardt Institute of Molecular Biology of Russian Academy of Sciences, Moscow, Russia
| | - L N Chuvakova
- Engelhardt Institute of Molecular Biology of Russian Academy of Sciences, Moscow, Russia
| | - S Sorokina
- Koltzov Institute of Developmental Biology of Russian Academy of Sciences, Moscow, Russia
| | - J E Vorontsova
- Koltzov Institute of Developmental Biology of Russian Academy of Sciences, Moscow, Russia
| | - E V Tokmacheva
- Department of Neurogenetics, Pavlov Institute of Physiology, Russian Academy of Sciences, St. Petersburg, Russia
| | - S Y Funikov
- Engelhardt Institute of Molecular Biology of Russian Academy of Sciences, Moscow, Russia
| | - A P Rezvykh
- Engelhardt Institute of Molecular Biology of Russian Academy of Sciences, Moscow, Russia
| | - M B Evgen'ev
- Engelhardt Institute of Molecular Biology of Russian Academy of Sciences, Moscow, Russia.
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8
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Sandner G, König A, Wallner M, Weghuber J. Alternative model organisms for toxicological fingerprinting of relevant parameters in food and nutrition. Crit Rev Food Sci Nutr 2021; 62:5965-5982. [PMID: 33683153 DOI: 10.1080/10408398.2021.1895060] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
In the field of (food) toxicology, there is a strong trend of replacing animal trials with alternative methods for the assessment of adverse health effects in humans. The replacement of animal trials is not only driven by ethical concerns but also by the number of potential testing substances (food additives, packaging material, contaminants, and toxicants), which is steadily increasing. In vitro 2D cell culture applications in combination with in silico modeling might provide an applicable first response. However, those systems lack accurate predictions of metabolic actions. Thus, alternative in vivo models could fill the gap between cell culture and animal trials. In this review, we highlight relevant studies in the field and spotlight the applicability of alternative models, including C. elegans, D. rerio, Drosophila, HET-CAM and Lab-on-a-chip.
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Affiliation(s)
- Georg Sandner
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Wels, Austria
| | - Alice König
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Wels, Austria.,FFoQSI GmbH-Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Tulln, Austria
| | - Melanie Wallner
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Wels, Austria.,FFoQSI GmbH-Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Tulln, Austria
| | - Julian Weghuber
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Wels, Austria.,FFoQSI GmbH-Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Tulln, Austria
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9
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Abstract
Drosophila melanogaster males reduce courtship behaviour after mating failure. In the lab, such conditioned courtship suppression, aka 'courtship conditioning', serves as a complex learning and memory assay. Interestingly, variations in the courtship conditioning assay can establish different types of memory. Here, we review research investigating the underlying cellular and molecular mechanisms that allow male flies to form memories of previous mating failures.
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Affiliation(s)
- Nicholas Raun
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Spencer Jones
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Jamie M Kramer
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia, Canada
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10
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Akishina AA, Kuvaeva EE, Vorontsova YE, Simonova OB. NAP Family Histone Chaperones: Characterization and Role in Ontogenesis. Russ J Dev Biol 2020. [DOI: 10.1134/s1062360420060028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Bayliak MM, Demianchuk OI, Gospodaryov DV, Abrat OB, Lylyk MP, Storey KB, Lushchak VI. Mutations in genes cnc or dKeap1 modulate stress resistance and metabolic processes in Drosophila melanogaster. Comp Biochem Physiol A Mol Integr Physiol 2020; 248:110746. [PMID: 32579905 DOI: 10.1016/j.cbpa.2020.110746] [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: 03/20/2020] [Revised: 06/10/2020] [Accepted: 06/11/2020] [Indexed: 11/29/2022]
Abstract
The transcription factor Nrf2 and its negative regulator Keap1 play important roles in the maintenance of redox homeostasis in animal cells. Nrf2 activates defenses against oxidative stress and xenobiotics. Homologs of Nrf2 and Keap1 are present in Drosophila melanogaster (CncC and dKeap1, respectively). The aim of this study was to explore effects of CncC deficiency (due to mutation in the cnc gene) or enhanced activity (due to mutation in the dKeap1 gene) on redox status and energy metabolism of young adult flies in relation to behavioral traits and resistance to a number of stressors. Deficiency in either CncC or dKeap1 delayed pupation and increased climbing activity and heat stress resistance in 2-day-old adult flies. Males and females of the ∆keap1 line shared some similarities such as elevated antioxidant defense as well as lower triacylglyceride and higher glucose levels. Males of the ∆keap1 line also had a higher activity of hexokinase, whereas ∆keap1 females showed higher glycogen levels and lower values of respiratory control and ATP production than flies of the control line. Mutation of cnc gene in allele cncEY08884 caused by insertion of P{EPgy2} transposon in cnc promotor did not affect significantly the levels of metabolites and redox parameters, and even activated some components of antioxidant defense. These data suggest that the mutation can be hypomorphic as well as CncC protein can be dispensable for adult fruit flies under physiological conditions. In females, CncC mutation led to lower mitochondrial respiration, higher hexokinase activity and higher fecundity as compared with the control line. Either CncC activation or its deficiency affected stress resistance of flies.
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Affiliation(s)
- Maria M Bayliak
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., Ivano-Frankivsk 76018, Ukraine.
| | - Oleh I Demianchuk
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., Ivano-Frankivsk 76018, Ukraine
| | - Dmytro V Gospodaryov
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., Ivano-Frankivsk 76018, Ukraine.
| | - Oleksandra B Abrat
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., Ivano-Frankivsk 76018, Ukraine
| | - Maria P Lylyk
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., Ivano-Frankivsk 76018, Ukraine
| | - Kenneth B Storey
- Institute of Biochemistry and Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, ON, K1S 5B6, Canada
| | - Volodymyr I Lushchak
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., Ivano-Frankivsk 76018, Ukraine.
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12
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Li X, Liu FZ, Cai WL, Zhao J, Hua HX, Zou YL. The function of spineless in antenna and wing development of the brown planthopper, Nilaparvata lugens. INSECT MOLECULAR BIOLOGY 2019; 28:196-207. [PMID: 30230080 DOI: 10.1111/imb.12538] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A wide array of sensilla are distributed on insect antennae, and they play a variety of important roles. Rice planthoppers, destructive pests on rice, have a unique antenna sensilla structure called the 'sensory plaque organ'. The spineless (ss) gene encodes a bHLH-PAS transcription factor and plays a key role in antenna development. In the current study, a 3029 bp full-length cDNA of the Nilaparvata lugens ss gene (Nlss) was cloned, and it encodes 654 amino acid residues. The highest level of Nlss expression was detected in the thorax of fourth-instar nymphs. Knockdown of Nlss in nymphs led to a decrease in the number and size of plaque organs. Moreover, the flagella of the treated insects were poorly developed, wilted, and even dropped off from the pedicel. Nlss-knockdown also resulted in twisted wings in both long-winged and short-winged brown planthoppers. Y-type olfactometer analyses indicated that antenna defects originating from Nlss depletion resulted in less sensitivity to host volatiles. This study represents the first report of the characteristics and functions of Nlss in N. lugens antenna and wing development and illuminates the function of the plaque organ of N. lugens in host volatile perception.
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Affiliation(s)
- X Li
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - F-Z Liu
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - W-L Cai
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - J Zhao
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - H-X Hua
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Y-L Zou
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
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Akishina AA, Vorontsova JE, Cherezov RO, Slezinger MS, Simonova OB, Kuzin BA. NAP Family CG5017 Chaperone Pleiotropically Regulates Human AHR Target Genes Expression in Drosophila Testis. Int J Mol Sci 2018; 20:ijms20010118. [PMID: 30597983 PMCID: PMC6337364 DOI: 10.3390/ijms20010118] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 12/11/2018] [Accepted: 12/13/2018] [Indexed: 12/13/2022] Open
Abstract
To study the regulatory mechanism of the Aryl hydrocarbon receptor (AHR), target genes of transcription are necessary for understanding the normal developmental and pathological processes. Here, we examined the effects of human AHR ligands on male fecundity. To induce ectopic human AhR gene expression, we used Drosophilamelanogaster transformed with human AhR under the control of a yeast UAS promoter element capable of activation in the two-component UAS-GAL4 system. We found that exogenous AHR ligands decrease the number of Drosophila gonadal Tj-positive cells. We also found both an increase and decrease of AHR target gene expression, including in genes that control homeostasis and testis development. This suggests that gonadal AHR activation may affect the expression of gene networks that control sperm production and could be critical for fertility not just in Drosophila but also in humans. Finally, we found that the activation of the expression for some AHR target genes depends on the expression of testis-specific chaperone CG5017 in gonadal cells. Since CG5017 belongs to the nucleosome assembly protein (NAP) family and may participate in epigenetic regulation, we propose that this nucleotropic chaperone is essential to provide the human AHR with access to only the defined set of its target genes during spermatogenesis.
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Affiliation(s)
- Angelina A Akishina
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, Vavilova str. 26, Moscow 119991, Russia.
| | - Julia E Vorontsova
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, Vavilova str. 26, Moscow 119991, Russia.
| | - Roman O Cherezov
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, Vavilova str. 26, Moscow 119991, Russia.
| | - Mikhail S Slezinger
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, Vavilova str. 26, Moscow 119991, Russia.
| | - Olga B Simonova
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, Vavilova str. 26, Moscow 119991, Russia.
| | - Boris A Kuzin
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, Vavilova str. 26, Moscow 119991, Russia.
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Zhuravlev AV, Vetrovoy OV, Savvateeva-Popova EV. Enzymatic and non-enzymatic pathways of kynurenines' dimerization: the molecular factors for oxidative stress development. PLoS Comput Biol 2018; 14:e1006672. [PMID: 30532237 PMCID: PMC6301705 DOI: 10.1371/journal.pcbi.1006672] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 12/20/2018] [Accepted: 11/26/2018] [Indexed: 11/19/2022] Open
Abstract
Kynurenines, the products of tryptophan oxidative degradation, are involved in multiple neuropathologies, such as Huntington's chorea, Parkinson's disease, senile dementia, etc. The major cause for hydroxykynurenines's neurotoxicity is the oxidative stress induced by the reactive oxygen species (ROS), the by-products of L-3-hydroxykynurenine (L-3HOK) and 3-hydroxyanthranilic acid (3HAA) oxidative self-dimerization. 2-aminophenol (2AP), a structural precursor of L-3HOK and 3HAA, undergoes the oxidative conjugation to form 2-aminophenoxazinone. There are several modes of 2AP dimerization, including both enzymatic and non-enzymatic stages. In this study, the free energies for 2AP, L-3HOK and 3HAA dimerization stages have been calculated at B3LYP/6-311G(d,p)//6-311+(O)+G(d) level, both in the gas phase and in heptane or water solution. For the intermediates, ionization potentials and electron affinities were calculated, as well as free energy and kinetics of molecular oxygen interaction with several non-enzymatically formed dimers. H-atom donating power of the intermediates increases upon the progress of the oxidation, making possible generation of hydroperoxyl radical or hydrogen peroxide from O2 at the last stages. Among the dimerization intermediates, 2-aminophenoxazinole derivatives have the lowest ionization potential and can reduce O2 to superoxide anion. The rate for O-H homolytic bond dissociation is significantly higher than that for C-H bond in non-enzymatic quinoneimine conjugate. However, the last reaction passes irreversibly, reducing O2 to hydroperoxyl radical. The inorganic ferrous iron and the heme group of Drosophila phenoxazinone synthase significantly reduce the energy cost of 2AP H-atom abstraction by O2. We have also shown experimentally that total antioxidant capacity decreases in Drosophila mutant cardinal with L-3HOK excess relative to the wild type Canton-S, and lipid peroxidation decreases in aged cardinal. Taken together, our data supports the conception of hydroxykynurenines' dual role in neurotoxicity: serving as antioxidants themselves, blocking lipid peroxidation by H-atom donation, they also can easily generate ROS upon dimerization, leading to the oxidative stress development.
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Affiliation(s)
- Aleksandr V. Zhuravlev
- Laboratory of Neurogenetics, Pavlov Institute of Physiology, Russian Academy of Sciences, Saint-Petersburg, Russia
- * E-mail:
| | - Oleg V. Vetrovoy
- Laboratory of Regulation of the Brain Neuronal Functions, Pavlov Institute of Physiology, Russian Academy of Sciences, Saint-Petersburg, Russia
- Department of Biochemistry, Faculty of Biology, Saint-Petersburg State University, Saint-Petersburg, Russia
| | - Elena V. Savvateeva-Popova
- Laboratory of Neurogenetics, Pavlov Institute of Physiology, Russian Academy of Sciences, Saint-Petersburg, Russia
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15
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Weigand H, Weiss M, Cai H, Li Y, Yu L, Zhang C, Leese F. Fishing in troubled waters: Revealing genomic signatures of local adaptation in response to freshwater pollutants in two macroinvertebrates. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 633:875-891. [PMID: 29602123 DOI: 10.1016/j.scitotenv.2018.03.109] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 03/02/2018] [Accepted: 03/09/2018] [Indexed: 06/08/2023]
Abstract
Local adaptation is of fundamental importance for populations to cope with fast, human-mediated environmental changes. In the past, analyses of local adaptation were restricted to few model species. Nowadays, due to the increased affordability of high-throughput sequencing, local adaptation can be studied much easier by searching for patterns of positive selection using genomic data. In the present study, we analysed effects of wastewater treatment plant and ore mining effluents on stream invertebrate populations. The two different anthropogenic stressors have impacted on stream ecosystems over different time scales and with different potencies. As target organisms we selected two macroinvertebrate species with different life histories and dispersal capacities: the caddisfly Glossosoma conformis and the flatworm Dugesia gonocephala. We applied a genome-wide genetic marker technique, termed ddRAD (double digest restriction site associated DNA) sequencing, to identify local adaptation. Ten and 18% of all loci were identified as candidate loci for local adaptation in D. gonocephala and G. conformis, respectively. However, after stringent re-evaluation of the genomic data, strong evidence for local adaptation remained only for one population of the flatworm D. gonocephala affected by high copper concentration from ore mining. One of the corresponding candidate loci is arnt, a gene associated with the response to xenobiotics and potentially involved in metal detoxification. Our results support the hypotheses that local adaptation is more likely to play a central role in environments impacted by a stronger stressor for a longer time and that it is more likely to occur in species with lower migration rates. However, these findings have to be interpreted cautiously, as several confounding factors may have limited the possibility to detect local adaptation. Our study highlights how genomic tools can be used to study the adaptability and thus resistance of natural populations to changing environments and we discuss prospects and limitations of the methods.
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Affiliation(s)
- Hannah Weigand
- Aquatic Ecosystem Research, University of Duisburg-Essen, 45141 Essen, Germany.
| | - Martina Weiss
- Aquatic Ecosystem Research, University of Duisburg-Essen, 45141 Essen, Germany
| | - Huimin Cai
- Department of Computer Science, City University of Hong Kong, Hong Kong 999077, China
| | | | - Lili Yu
- BGI-Shenzhen, Shenzhen 518083, China
| | | | - Florian Leese
- Aquatic Ecosystem Research, University of Duisburg-Essen, 45141 Essen, Germany
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