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Rai M, Li H, Policastro RA, Zentner GE, Nemkov T, D'Alessandro A, Tennessen JM. Glycolytic Disruption Triggers Interorgan Signaling to Nonautonomously Restrict Drosophila Larval Growth. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.06.597835. [PMID: 38895259 PMCID: PMC11185712 DOI: 10.1101/2024.06.06.597835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
Drosophila larval growth requires efficient conversion of dietary nutrients into biomass. Lactate Dehydrogenase (Ldh) and Glycerol-3-phosphate dehydrogenase (Gpdh1) support larval biosynthetic metabolism by maintaining NAD + /NADH redox balance and promoting glycolytic flux. Consistent with the cooperative functions of Ldh and Gpdh1, the loss of both enzymes, but neither single enzyme, induces a developmental arrest. However, Ldh and Gpdh1 exhibit complex and often mutually exclusive expression patterns, suggesting that the Gpdh1; Ldh double mutant lethal phenotype could be mediated nonautonomously. Here we find that the developmental arrest displayed by the double mutants extends beyond simple metabolic disruption and instead stems, in part, from changes in systemic growth factor signaling. Specifically, we demonstrate that this synthetic lethality is linked to the upregulation of Upd3, a cytokine involved in the Jak/Stat signaling pathway. Moreover, we demonstrate that either loss of the Upd3 or dietary administration of the steroid hormone 20-hydroxyecdysone (20E) rescue the synthetic lethal phenotype of Gpdh1; Ldh double mutants. Together, these findings demonstrate that metabolic disruptions within a single tissue can nonautonomously modulate interorgan signaling to ensure synchronous developmental growth. SUMMARY STATEMENT We used the fruit fly Drosophila melanogaster to demonstrate that disruption of glycolysis within a single larval tissue alters systemic cytokine signaling and nonautonomously inhibits development of the entire animal.
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O'Hara MK, Saul C, Handa A, Cho B, Zheng X, Sehgal A, Williams JA. The NFκB Dif is required for behavioral and molecular correlates of sleep homeostasis in Drosophila. Sleep 2024:zsae096. [PMID: 38629438 DOI: 10.1093/sleep/zsae096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Indexed: 05/07/2024] Open
Abstract
The nuclear factor binding the κ light chain in B-cells (NFκB) is involved in a wide range of cellular processes including development, growth, innate immunity, and sleep. However, genetic studies of the role of specific NFκB transcription factors in sleep have been limited. Drosophila fruit flies carry three genes encoding NFκB transcription factors, Dorsal, Dorsal Immunity Factor (Dif), and Relish. We previously found that loss of the Relish gene from fat body suppressed daily nighttime sleep, and abolished infection-induced sleep. Here we show that Dif regulates daily sleep and recovery sleep following prolonged wakefulness. Mutants of Dif showed reduced daily sleep and suppressed recovery in response to sleep deprivation. Pan-neuronal knockdown of Dif strongly suppressed daily sleep, indicating that in contrast to Relish, Dif functions from the central nervous system to regulate sleep. Based on the unique expression pattern of a Dif- GAL4 driver, we hypothesized that its effects on sleep were mediated by the pars intercerebralis (PI). While RNAi knock-down of Dif in the PI reduced daily sleep, it had no effect on the recovery response to sleep deprivation. However, recovery sleep was suppressed when RNAi knock-down of Dif was distributed across a wider range of neurons. Induction of the nemuri (nur) antimicrobial peptide by sleep deprivation was reduced in Dif mutants and pan-neuronal over-expression of nur also suppressed the Dif mutant phenotype by significantly increasing sleep and reducing nighttime arousability. Together, these findings indicate that Dif functions from brain to target nemuri and to promote deep sleep.
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Affiliation(s)
- Michael K O'Hara
- Chronobiology and Sleep Institute, Department of Neuroscience, Philadelphia, PA 19104, USA
| | | | | | - Bumsik Cho
- Chronobiology and Sleep Institute, Department of Neuroscience, Philadelphia, PA 19104, USA
- Howard Hughes Medical Institute, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | | | - Amita Sehgal
- Chronobiology and Sleep Institute, Department of Neuroscience, Philadelphia, PA 19104, USA
- Howard Hughes Medical Institute, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Julie A Williams
- Chronobiology and Sleep Institute, Department of Neuroscience, Philadelphia, PA 19104, USA
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3
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Davidson PL, Nadolski EM, Moczek AP. Gene regulatory networks underlying the development and evolution of plasticity in horned beetles. CURRENT OPINION IN INSECT SCIENCE 2023; 60:101114. [PMID: 37709168 PMCID: PMC10866377 DOI: 10.1016/j.cois.2023.101114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/17/2023] [Accepted: 09/07/2023] [Indexed: 09/16/2023]
Abstract
Horned beetles have emerged as a powerful study system with which to investigate the developmental mechanisms underlying environment-responsive development and its evolution. We begin by reviewing key advances in our understanding of the diverse roles played by transcription factors, endocrine regulators, and signal transduction pathways in the regulation of horned beetle plasticity. We then explore recent efforts aimed at understanding how such condition-specific expression may be regulated in the first place, as well as how the differential expression of master regulators may instruct conditional expression of downstream target genes. Here, we focus on the significance of chromatin remodeling as a powerful but thus far understudied mechanism able to facilitate trait-, sex-, and species-specific responses to environmental conditions.
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Affiliation(s)
- Phillip L Davidson
- Department of Biology, Indiana University Bloomington, IN 47405-7107, United States
| | - Erica M Nadolski
- Department of Biology, Indiana University Bloomington, IN 47405-7107, United States
| | - Armin P Moczek
- Department of Biology, Indiana University Bloomington, IN 47405-7107, United States.
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4
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Rohner PT, Casasa S, Moczek AP. Assessing the evolutionary lability of insulin signalling in the regulation of nutritional plasticity across traits and species of horned dung beetles. J Evol Biol 2023; 36:1641-1648. [PMID: 37885148 DOI: 10.1111/jeb.14240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 07/20/2023] [Accepted: 07/28/2023] [Indexed: 10/28/2023]
Abstract
Nutrition-dependent growth of sexual traits is a major contributor to phenotypic diversity, and a large body of research documents insulin signalling as a major regulator of nutritional plasticity. However, findings across studies raise the possibility that the role of individual components within the insulin signalling pathway diverges in function among traits and taxa. Here, we use RNAi-mediated transcript depletion in the gazelle dung beetle to investigate the functions of forkhead box O (Foxo) and two paralogs of the insulin receptor (InR1 and InR2) in shaping nutritional plasticity in polyphenic male head horns, exaggerated fore legs, and weakly nutrition-responsive genitalia. Our functional genetic manipulations led to three main findings: FoxoRNAi reduced the length of exaggerated head horns in large males, while neither InR1 nor InR2 knock-downs resulted in measurable horn phenotypes. These results are similar to those documented previously for another dung beetle (Onthophagus taurus), but in stark contrast to findings in rhinoceros beetles. Secondly, knockdown of Foxo, InR1, and InR2 led to an increase in the intercept or slope of the scaling relationship of genitalia size. These findings are in contrast even to results documented previously for O. taurus. Lastly, while FoxoRNAi reduces male forelegs in D. gazella and O. taurus, the effects of InR1 and InR2 knockdowns diverged across dung beetle species. Our results add to the growing body of literature indicating that despite insulin signalling's conserved role as a regulator of nutritional plasticity, the functions of its components may diversify among traits and species, potentially fuelling the evolution of scaling relationships.
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Affiliation(s)
- Patrick T Rohner
- Department of Ecology, Behavior, and Evolution, University of California San Diego, San Diego, California, USA
- Department of Biology, Indiana University Bloomington, Bloomington, Indiana, USA
| | - Sofia Casasa
- Department of Biology, Boston University, Boston, Massachusetts, USA
| | - Armin P Moczek
- Department of Biology, Indiana University Bloomington, Bloomington, Indiana, USA
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Luo X, Fang G, Chen K, Song Y, Lu T, Tomberlin JK, Zhan S, Huang Y. A gut commensal bacterium promotes black soldier fly larval growth and development partly via modulation of intestinal protein metabolism. mBio 2023; 14:e0117423. [PMID: 37706881 PMCID: PMC10653789 DOI: 10.1128/mbio.01174-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Accepted: 06/22/2023] [Indexed: 09/15/2023] Open
Abstract
IMPORTANCE Black solider fly larvae and the gut microbiota can recycle nutrients from various organic wastes into valuable insect biomass. We found that Citrobacter amalonaticus, a gut commensal bacterium of the insect, exerts beneficial effects on larval growth and development and that the expression of many metabolic larval genes was significantly impacted by the symbiont. To identify the larval genes involved in the host-symbiont interaction, we engineered the symbiont to produce double-strand RNA and enabled the strain to silence host genes in the larval gut environment where the interaction takes place. With this approach, we confirmed that two intestinal protease families are involved in the interaction and provided further evidence that intestinal protein metabolism plays a role in the interaction. This work expands the genetic toolkits available to study the insect functional genomics and host-symbiont interaction and provide the prospective for the future application of gut microbiota on the large-scale bioconversion.
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Affiliation(s)
- Xingyu Luo
- Key Laboratory of Insect Developmental and Evolutionary Biology, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Gangqi Fang
- Key Laboratory of Insect Developmental and Evolutionary Biology, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Kuangqin Chen
- Key Laboratory of Insect Developmental and Evolutionary Biology, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Yu Song
- Key Laboratory of Insect Developmental and Evolutionary Biology, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Tianyi Lu
- Key Laboratory of Insect Developmental and Evolutionary Biology, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | | | - Shuai Zhan
- Key Laboratory of Insect Developmental and Evolutionary Biology, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Yongping Huang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
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Zhang A, de Ángel Solá D, Acevedo Flores M, Cao L, Wang L, Kim JG, Tarr PI, Warner BB, Rosario Matos N, Wang L. Infants exposed in utero to Hurricane Maria have gut microbiomes with reduced diversity and altered metabolic capacity. mSphere 2023; 8:e0013423. [PMID: 37754563 PMCID: PMC10597457 DOI: 10.1128/msphere.00134-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 08/10/2023] [Indexed: 09/28/2023] Open
Abstract
The gut microbiome is a potentially important mechanism that links prenatal disaster exposures with increased disease risks. However, whether prenatal disaster exposures are associated with alterations in the infant's gut microbiome remains unknown. We established a birth cohort study named Hurricane as the Origin of Later Alterations in Microbiome (HOLA) after Hurricane Maria struck Puerto Rico in 2017. We enrolled vaginally born Latino term infants aged 2 to 6 months, including n = 29 infants who were exposed in utero to Hurricane Maria in Puerto Rico and n = 34 infants who were conceived at least 5 months after the hurricane as controls. Shotgun metagenomic sequencing was performed on infant stool swabs. Infants exposed in utero to Hurricane Maria had a reduced diversity in their gut microbiome compared to the control infants, which was mainly seen in the exclusively formula-fed group (P = 0.02). Four bacterial species, including Bacteroides vulgatus, Clostridium innocuum, Bifidobacterium pseudocatenulatum, and Clostridium neonatale, were depleted in the exposure group compared to the control group. Compositional differences in the microbial community and metabolic genes between the exposure and control groups were significant, which were driven by the formula feeding group (P = 0.02 for the microbial community and P = 0.008 for the metabolic genes). Metabolic modules involved in carbohydrate metabolism were reduced in the exposure group. Prenatal maternal exposure to Hurricane Maria was associated with a reduced gut commensal and an altered microbial composition and metabolic potential in the offspring's gut. Breastfeeding can adjust the composition of the gut microbiomes of exposed infants. IMPORTANCE Climate change is a serious issue that is affecting human health. With more frequent and intense weather disasters due to climate change, there is an urgent need to evaluate and understand the impacts of prenatal disaster exposures on the offspring. The prenatal stage is a particularly vulnerable stage for disease origination. However, the impact of prenatal weather disaster exposures on the offspring's gut microbiome has not been evaluated. Our HOLA study starts to fill this knowledge gap and provides novel insights into the microbiome as a mechanism that links prenatal disaster exposures with elevated disease risks. Our major finding that reduced microbial diversity and altered metabolic capacity are associated with prenatal hurricane exposures warrants further studies to evaluate the impact of weather disasters on the unborn.
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Affiliation(s)
- Ai Zhang
- Department of Medicine, Division of Allergy and Immunology, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | - David de Ángel Solá
- Department of Pediatrics, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Midnela Acevedo Flores
- Department of Pediatrics and Obstetrics and Gynecology, San Juan City Hospital Research Unit, San Juan Hospital, San Juan, Puerto Rico
| | - Lijuan Cao
- Department of Medicine, Division of Allergy and Immunology, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | - Leran Wang
- Department of Medicine, Division of Infectious Diseases, Edison Family Center for Genome Sciences and Systems Biology, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | - Josh G. Kim
- Department of Medicine, Division of Allergy and Immunology, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | - Phillip I. Tarr
- Department of Pediatrics, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | - Barbara B. Warner
- Department of Pediatrics, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | - Nicolás Rosario Matos
- Department of Pediatrics and Obstetrics and Gynecology, San Juan City Hospital Research Unit, San Juan Hospital, San Juan, Puerto Rico
| | - Leyao Wang
- Department of Medicine, Division of Allergy and Immunology, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
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Su Y, Liu M, Li M, Han Z, Lü D, Zhang Y, Zhu F, Shen Z, Qian P, Tang X. Metabolomic analysis of lipid changes in Bombyx mori infected with Nosema bombycis. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2023; 147:104750. [PMID: 37329996 DOI: 10.1016/j.dci.2023.104750] [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: 03/07/2023] [Revised: 05/05/2023] [Accepted: 05/30/2023] [Indexed: 06/19/2023]
Abstract
The silkworm (Bombyx mori) is a model species of lepidopteran insect. Microsporidium spp. are obligate intracellular eukaryotic parasites. Infection by the microsporidian Nosema bombycis (Nb) results in an outbreak of Pébrine disease in silkworms and causes substantial losses to the sericulture industry. It has been suggested that Nb depends on nutrients from host cells for spore growth. However, little is known about changes in lipid levels after Nb infection. In this study, ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) was performed to analyze the effect of Nb infection on lipid metabolism in the midgut of silkworms. A total of 1601 individual lipid molecules were detected in the midgut of silkworms, of which 15 were significantly decreased after Nb challenge. Classification, chain length, and chain saturation analysis revealed that these 15 differential lipids can be classified into different lipid subclasses, of which 13 belong to glycerol phospholipid lipids and two belong to glyceride esters. The results indicated that Nb uses the host lipids to complete its own replication, and the acquisition of host lipid subclasses is selective; not all lipid subclasses are required for microsporidium growth or proliferation. Based on lipid metabolism data, phosphatidylcholine (PC) was found to be an important nutrient for Nb replication. Diet supplementation with lecithin substantially promoted the replication of Nb. Knockdown and overexpression of the key enzyme phosphatidate phosphatase (PAP) and phosphatidylcholine (Bbc) for PC synthesis also confirmed that PC is necessary for Nb replication. Our results showed that most lipids in the host midgut decreased when silkworms were infected with Nb. Reduction of or supplementation with PC may be a strategy to suppress or promote microsporidial replication.
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Affiliation(s)
- Yaping Su
- Jiangsu University of Science and Technology, Zhenjiang, 212018, Jiangsu Province, China; Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212018, Jiangsu Province, China
| | - Mengjin Liu
- Jiangsu University of Science and Technology, Zhenjiang, 212018, Jiangsu Province, China; Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212018, Jiangsu Province, China
| | - Mingze Li
- Jiangsu University of Science and Technology, Zhenjiang, 212018, Jiangsu Province, China; Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212018, Jiangsu Province, China
| | - Zhenghao Han
- Jiangsu University of Science and Technology, Zhenjiang, 212018, Jiangsu Province, China; Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212018, Jiangsu Province, China
| | - Dingding Lü
- Zhenjiang College, Zhenjiang, 212028, Jiangsu Province, China
| | - Yiling Zhang
- Jiangsu University of Science and Technology, Zhenjiang, 212018, Jiangsu Province, China; Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212018, Jiangsu Province, China
| | - Feng Zhu
- Zaozhuang University, Zaozhuang, 277160, Shandong Province, China
| | - Zhongyuan Shen
- Jiangsu University of Science and Technology, Zhenjiang, 212018, Jiangsu Province, China; Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212018, Jiangsu Province, China
| | - Ping Qian
- Jiangsu University of Science and Technology, Zhenjiang, 212018, Jiangsu Province, China; Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212018, Jiangsu Province, China
| | - Xudong Tang
- Jiangsu University of Science and Technology, Zhenjiang, 212018, Jiangsu Province, China; Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212018, Jiangsu Province, China.
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Wang L, Lin J, Yang K, Wang W, Lv Y, Zeng X, Zhao Y, Yu J, Pan L. Perilipin 1 Deficiency Prompts Lipolysis in Lipid Droplets and Aggravates the Pathogenesis of Persistent Immune Activation in Drosophila. J Innate Immun 2023; 15:697-708. [PMID: 37742619 PMCID: PMC10601664 DOI: 10.1159/000534099] [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: 08/26/2022] [Accepted: 09/08/2023] [Indexed: 09/26/2023] Open
Abstract
Lipid droplets (LDs) are highly dynamic intracellular organelles, which are involved in lots of biological processes. However, the dynamic morphogenesis and functions of intracellular LDs during persistent innate immune responses remain obscure. In this study, we induce long-term systemic immune activation in Drosophila through genetic manipulation. Then, the dynamic pattern of LDs is traced in the Drosophila fat body. We find that deficiency of Plin1, a key regulator of LDs' reconfiguration, blocks LDs minimization at the initial stage of immune hyperactivation but enhances LDs breakdown at the later stage of sustained immune activation via recruiting the lipase Brummer (Bmm, homologous to human ATGL). The high wasting in LDs shortens the lifespan of flies with high-energy-cost immune hyperactivation. Therefore, these results suggest a critical function of LDs during long-term immune activation and provide a potential treatment for the resolution of persistent inflammation.
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Affiliation(s)
- Lei Wang
- Key Laboratory of Molecular Virology and Immunology, The Center for Microbes, Development, and Health, Shanghai Institute of Immunity and Infection (Former Institut Pasteur of Shanghai), Chinese Academy of Sciences, Shanghai, China
| | - Jiaxin Lin
- Key Laboratory of Molecular Virology and Immunology, The Center for Microbes, Development, and Health, Shanghai Institute of Immunity and Infection (Former Institut Pasteur of Shanghai), Chinese Academy of Sciences, Shanghai, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Kaiyan Yang
- Key Laboratory of Molecular Virology and Immunology, The Center for Microbes, Development, and Health, Shanghai Institute of Immunity and Infection (Former Institut Pasteur of Shanghai), Chinese Academy of Sciences, Shanghai, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Weina Wang
- Key Laboratory of Molecular Virology and Immunology, The Center for Microbes, Development, and Health, Shanghai Institute of Immunity and Infection (Former Institut Pasteur of Shanghai), Chinese Academy of Sciences, Shanghai, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yan Lv
- Key Laboratory of Molecular Virology and Immunology, The Center for Microbes, Development, and Health, Shanghai Institute of Immunity and Infection (Former Institut Pasteur of Shanghai), Chinese Academy of Sciences, Shanghai, China
- Pasteurien College, Soochow University, Suzhou, China
| | - Xiangkang Zeng
- Key Laboratory of Molecular Virology and Immunology, The Center for Microbes, Development, and Health, Shanghai Institute of Immunity and Infection (Former Institut Pasteur of Shanghai), Chinese Academy of Sciences, Shanghai, China
- Pasteurien College, Soochow University, Suzhou, China
| | - Yaya Zhao
- Key Laboratory of Molecular Virology and Immunology, The Center for Microbes, Development, and Health, Shanghai Institute of Immunity and Infection (Former Institut Pasteur of Shanghai), Chinese Academy of Sciences, Shanghai, China
- The Joint Center for Infection and Immunity between Guangzhou Institute of Pediatrics and Institut Pasteur of Shanghai, Guangzhou Women and Children’s Medical Center, Guangzhou, China
| | - Junjing Yu
- Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, China
| | - Lei Pan
- Key Laboratory of Molecular Virology and Immunology, The Center for Microbes, Development, and Health, Shanghai Institute of Immunity and Infection (Former Institut Pasteur of Shanghai), Chinese Academy of Sciences, Shanghai, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
- Pasteurien College, Soochow University, Suzhou, China
- The Joint Center for Infection and Immunity between Guangzhou Institute of Pediatrics and Institut Pasteur of Shanghai, Guangzhou Women and Children’s Medical Center, Guangzhou, China
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Mahanta DK, Bhoi TK, Komal J, Samal I, Nikhil RM, Paschapur AU, Singh G, Kumar PVD, Desai HR, Ahmad MA, Singh PP, Majhi PK, Mukherjee U, Singh P, Saini V, Shahanaz, Srinivasa N, Yele Y. Insect-pathogen crosstalk and the cellular-molecular mechanisms of insect immunity: uncovering the underlying signaling pathways and immune regulatory function of non-coding RNAs. Front Immunol 2023; 14:1169152. [PMID: 37691928 PMCID: PMC10491481 DOI: 10.3389/fimmu.2023.1169152] [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: 02/18/2023] [Accepted: 08/07/2023] [Indexed: 09/12/2023] Open
Abstract
Multicellular organisms are constantly subjected to pathogens that might be harmful. Although insects lack an adaptive immune system, they possess highly effective anti-infective mechanisms. Bacterial phagocytosis and parasite encapsulation are some forms of cellular responses. Insects often defend themselves against infections through a humoral response. This phenomenon includes the secretion of antimicrobial peptides into the hemolymph. Specific receptors for detecting infection are required for the recognition of foreign pathogens such as the proteins that recognize glucans and peptidoglycans, together referred to as PGRPs and βGRPs. Activation of these receptors leads to the stimulation of signaling pathways which further activates the genes encoding for antimicrobial peptides. Some instances of such pathways are the JAK-STAT, Imd, and Toll. The host immune response that frequently accompanies infections has, however, been circumvented by diseases, which may have assisted insects evolve their own complicated immune systems. The role of ncRNAs in insect immunology has been discussed in several notable studies and reviews. This paper examines the most recent research on the immune regulatory function of ncRNAs during insect-pathogen crosstalk, including insect- and pathogen-encoded miRNAs and lncRNAs, and provides an overview of the important insect signaling pathways and effector mechanisms activated by diverse pathogen invaders.
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Affiliation(s)
- Deepak Kumar Mahanta
- Department of Entomology, Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar, India
| | - Tanmaya Kumar Bhoi
- Forest Protection Division, Indian Council of Forestry Research and Education (ICFRE) - Arid Forest Research Institute (ICFRE-AFRI), Jodhpur, Rajasthan, India
| | - J. Komal
- Department of Entomology, Navsari Agricultural University, Navsari, Gujarat, India
| | - Ipsita Samal
- ICAR-National Research Centre on Litchi, Mushahari, Ramna, Muzaffarpur, Bihar, India
| | - R. M. Nikhil
- Division of Entomology, Indian Agricultural Research Institute, New Delhi, India
| | - Amit Umesh Paschapur
- Crop Protection Division, Indian Council of Agricultural Research (ICAR)-Vivekananda Parvatiya Krishi Anusandhan Sansthan, Almora, Uttarakhand, India
| | - Gaurav Singh
- The Directorate of Research, Maharana Pratap Horticultural University, Karnal, Haryana, India
| | - P. V. Dinesh Kumar
- Department of Plant Pathology University of Agricultural Sciences, Bengaluru, Karnataka, India
| | - H. R. Desai
- Department of Entomology, Main Cotton Research Station, Navsari Agricultural University, Gujarat, India
| | - Mohammad Abbas Ahmad
- Department of Entomology, Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar, India
| | - P. P. Singh
- Department of Entomology, Tirhut College of Agriculture, Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar, India
| | - Prasanta Kumar Majhi
- Department of Plant Breeding and Genetics, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, India
| | - U. Mukherjee
- Department of Entomology, Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar, India
| | - Pushpa Singh
- Department of Entomology, Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar, India
| | - Varun Saini
- Department of Entomology, Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana, India
| | - Shahanaz
- Department of Entomology, College of Horticulture Mojerla, Sri Konda Laxman Telengana State Horticultural University, Wanaparthy, Telengana, India
| | - N. Srinivasa
- Department of Entomology and Agricultural Zoology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Yogesh Yele
- School of Crop Health Management Research, Council of Agricultural Research-National Institute of Biotic Stress Management (ICAR)- National Institute of Biotic Stress Management, Raipur, India
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10
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Loudhaief R, Jneid R, Christensen CF, Mackay DJ, Andersen DS, Colombani J. The Drosophila tumor necrosis factor receptor, Wengen, couples energy expenditure with gut immunity. SCIENCE ADVANCES 2023; 9:eadd4977. [PMID: 37294765 DOI: 10.1126/sciadv.add4977] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 05/04/2023] [Indexed: 06/11/2023]
Abstract
It is well established that tumor necrosis factor (TNF) plays an instrumental role in orchestrating the metabolic disorders associated with late stages of cancers. However, it is not clear whether TNF/TNF receptor (TNFR) signaling controls energy homeostasis in healthy individuals. Here, we show that the highly conserved Drosophila TNFR, Wengen (Wgn), is required in the enterocytes (ECs) of the adult gut to restrict lipid catabolism, suppress immune activity, and maintain tissue homeostasis. Wgn limits autophagy-dependent lipolysis by restricting cytoplasmic levels of the TNFR effector, TNFR-associated factor 3 (dTRAF3), while it suppresses immune processes through inhibition of the dTAK1/TAK1-Relish/NF-κB pathway in a dTRAF2-dependent manner. Knocking down dTRAF3 or overexpressing dTRAF2 is sufficient to suppress infection-induced lipid depletion and immune activation, respectively, showing that Wgn/TNFR functions as an intersection between metabolism and immunity allowing pathogen-induced metabolic reprogramming to fuel the energetically costly task of combatting an infection.
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Affiliation(s)
- Rihab Loudhaief
- Department of Biology, Faculty of Science, University of Copenhagen, Universitetsparken 15, Build. 3, 3rd floor, room 439, 2100 Copenhagen O, Denmark
| | - Rouba Jneid
- Department of Biology, Faculty of Science, University of Copenhagen, Universitetsparken 15, Build. 3, 3rd floor, room 439, 2100 Copenhagen O, Denmark
| | - Christian Fokdal Christensen
- Department of Biology, Faculty of Science, University of Copenhagen, Universitetsparken 15, Build. 3, 3rd floor, room 439, 2100 Copenhagen O, Denmark
| | - Duncan J Mackay
- Department of Biology, Faculty of Science, University of Copenhagen, Universitetsparken 15, Build. 3, 3rd floor, room 439, 2100 Copenhagen O, Denmark
| | - Ditte S Andersen
- Department of Biology, Faculty of Science, University of Copenhagen, Universitetsparken 15, Build. 3, 3rd floor, room 439, 2100 Copenhagen O, Denmark
| | - Julien Colombani
- Department of Biology, Faculty of Science, University of Copenhagen, Universitetsparken 15, Build. 3, 3rd floor, room 439, 2100 Copenhagen O, Denmark
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11
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Atkinson NS. The Role of Toll and Nonnuclear NF-κB Signaling in the Response to Alcohol. Cells 2023; 12:1508. [PMID: 37296629 PMCID: PMC10252657 DOI: 10.3390/cells12111508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 05/23/2023] [Accepted: 05/25/2023] [Indexed: 06/12/2023] Open
Abstract
An understanding of neuroimmune signaling has become central to a description of how alcohol causes addiction and how it damages people with an AUD. It is well known that the neuroimmune system influences neural activity via changes in gene expression. This review discusses the roles played by CNS Toll-like receptor (TLR) signaling in the response to alcohol. Also discussed are observations in Drosophila that show how TLR signaling pathways can be co-opted by the nervous system and potentially shape behavior to a far greater extent and in ways different than generally recognized. For example, in Drosophila, TLRs substitute for neurotrophin receptors and an NF-κB at the end of a TLR pathway influences alcohol responsivity by acting non-genomically.
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Affiliation(s)
- Nigel S Atkinson
- Department of Neuroscience and The Waggoner Center for Alcohol and Addiction Research, The University of Texas at Austin, Austin, TX 78712, USA
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12
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Xu J, Zheng L, Tan M, Wu H, Yan S, Jiang D. The susceptibility of Hyphantria cunea larvae to microbial pesticides Bacillus thuringiensis and Mamestra brassicae nuclear polyhedrosis virus under Cd stress. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 191:105383. [PMID: 36963948 DOI: 10.1016/j.pestbp.2023.105383] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/17/2023] [Accepted: 03/03/2023] [Indexed: 06/18/2023]
Abstract
Heavy metal pollution is an abiotic factor that can affect the efficiency of pest control. In this study, two microbial pesticides, Bacillus thuringiensis and Mamestra brassicae nuclear polyhedrosis virus (MbNPV), were used to treat Hyphantria cunea larvae with Cd pre-exposure, and the humoral and cellular immunity of H. cunea larvae with Cd exposure were evaluated. The results showed that Cd exposure increased the susceptibility of H. cunea larvae to microbial pesticides B. thuringiensis and MbNPV, and the lethal effect of Cd exposure and microbial pesticides on H. cunea larvae was synergistic. Cd exposure significantly decreased the expression of pathogen recognition genes (GNBP1 and GNBP3), signal transduction genes (Relish, Myd88, Tube, and Imd), and antimicrobial peptide gene (Lebocin) in the humoral immunity of H. cunea larvae compared with the untreated larvae. Parameters of cellular immunity, including the number of hemocytes, phagocytic activity, melanization activity, encapsulation activity, and the expression of three phagocytic regulatory genes (HEM1, GALE1, GALE2), were also found to decrease significantly in Cd-treated larvae. TOPSIS analysis showed that humoral immunity, cellular immunity, and total immunity levels of H. cunea larvae with Cd exposure were weaker than those in untreated larvae. Correlation analysis showed that the mortality of two microbial pesticides investigated in H. cunea larvae was negatively correlated with the humoral and cellular immunity of larvae. Taken togther, Cd exposure results in immunotoxic effects on H. cunea larvae and the use of microbial pesticides are an effective strategy for pest control in heavy metal-polluted areas.
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Affiliation(s)
- Jinsheng Xu
- School of Forestry, Northeast Forestry University, Harbin 150040, PR China; Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Lin Zheng
- School of Forestry, Northeast Forestry University, Harbin 150040, PR China; Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Mingtao Tan
- School of Forestry, Northeast Forestry University, Harbin 150040, PR China; Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Hongfei Wu
- School of Forestry, Northeast Forestry University, Harbin 150040, PR China; Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Shanchun Yan
- School of Forestry, Northeast Forestry University, Harbin 150040, PR China; Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Dun Jiang
- School of Forestry, Northeast Forestry University, Harbin 150040, PR China; Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, Northeast Forestry University, Harbin 150040, PR China.
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13
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Rideout EJ, Tennessen JM. Editorial. Semin Cell Dev Biol 2023; 138:81-82. [PMID: 35970667 DOI: 10.1016/j.semcdb.2022.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Elizabeth J Rideout
- Department of Cellular and Physiological Sciences, Life Sciences Institute, The University of British Columbia, Vancouver V6T 1Z3, Canada
| | - Jason M Tennessen
- Department of Biology, Indiana University, Bloomington, IN 47404, USA.
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14
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Hagedorn E, Bunnell D, Henschel B, Smith DL, Dickinson S, Brown AW, De Luca M, Turner AN, Chtarbanova S. RNA virus-mediated changes in organismal oxygen consumption rate in young and old Drosophila melanogaster males. Aging (Albany NY) 2023; 15:1748-1767. [PMID: 36947702 PMCID: PMC10085608 DOI: 10.18632/aging.204593] [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: 10/20/2022] [Accepted: 02/20/2023] [Indexed: 03/24/2023]
Abstract
Aging is accompanied by increased susceptibility to infections including with viral pathogens resulting in higher morbidity and mortality among the elderly. Significant changes in host metabolism can take place following virus infection. Efficient immune responses are energetically costly, and viruses divert host molecular resources to promote their own replication. Virus-induced metabolic reprogramming could impact infection outcomes, however, how this is affected by aging and impacts organismal survival remains poorly understood. RNA virus infection of Drosophila melanogaster with Flock House virus (FHV) is an effective model to study antiviral responses with age, where older flies die faster than younger flies due to impaired disease tolerance. Using this aged host-virus model, we conducted longitudinal, single-fly respirometry studies to determine if metabolism impacts infection outcomes. Analysis using linear mixed models on Oxygen Consumption Rate (OCR) following the first 72-hours post-infection showed that FHV modulates respiration, but age has no significant effect on OCR. However, the longitudinal assessment revealed that OCR in young flies progressively and significantly decreases, while OCR in aged flies remains constant throughout the three days of the experiment. Furthermore, we found that the OCR signature at 24-hours varied in response to both experimental treatment and survival status. FHV-injected flies that died prior to 48- or 72-hours measurements had a lower OCR compared to survivors at 48-hours. Our findings suggest the host's metabolic profile could influence the outcome of viral infections.
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Affiliation(s)
- Eli Hagedorn
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL 35401, USA
- Present Address: Indiana University School of Medicine-Indianapolis, Medical Scientist Training Program, Indianapolis, IN 46202, USA
| | - Dean Bunnell
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL 35401, USA
| | - Beate Henschel
- Department of Epidemiology and Biostatistics, Indiana University School of Public Health-Bloomington, Biostatistics Consulting Center, Bloomington, IN 47405, USA
| | - Daniel L Smith
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, AL 35233, USA
- Nathan Shock Center of Excellence in the Basic Biology of Aging, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Stephanie Dickinson
- Department of Epidemiology and Biostatistics, Indiana University School of Public Health-Bloomington, Biostatistics Consulting Center, Bloomington, IN 47405, USA
| | - Andrew W Brown
- Department of Applied Health Sciences, Indiana University, School of Public Health-Bloomington, Bloomington, IN 47405, USA
- Present Address: University of Arkansas for Medical Sciences and Arkansas Children’s Research Institute, Little Rock, AR 72202, USA
| | - Maria De Luca
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, AL 35233, USA
| | - Ashley N Turner
- Department of Biology, Jacksonville State University, Jacksonville, AL 36265, USA
| | - Stanislava Chtarbanova
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL 35401, USA
- Nathan Shock Center of Excellence in the Basic Biology of Aging, University of Alabama at Birmingham, Birmingham, AL 35294, USA
- Center for Convergent Bioscience and Medicine, University of Alabama, Tuscaloosa, AL 35401, USA
- Alabama Life Research Institute, University of Alabama, Tuscaloosa, AL 35401, USA
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15
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Unraveling the Role of Antimicrobial Peptides in Insects. Int J Mol Sci 2023; 24:ijms24065753. [PMID: 36982826 PMCID: PMC10059942 DOI: 10.3390/ijms24065753] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 03/14/2023] [Accepted: 03/15/2023] [Indexed: 03/19/2023] Open
Abstract
Antimicrobial peptides (AMPs) are short, mainly positively charged, amphipathic molecules. AMPs are important effectors of the immune response in insects with a broad spectrum of antibacterial, antifungal, and antiparasitic activity. In addition to these well-known roles, AMPs exhibit many other, often unobvious, functions in the host. They support insects in the elimination of viral infections. AMPs participate in the regulation of brain-controlled processes, e.g., sleep and non-associative learning. By influencing neuronal health, communication, and activity, they can affect the functioning of the insect nervous system. Expansion of the AMP repertoire and loss of their specificity is connected with the aging process and lifespan of insects. Moreover, AMPs take part in maintaining gut homeostasis, regulating the number of endosymbionts as well as reducing the number of foreign microbiota. In turn, the presence of AMPs in insect venom prevents the spread of infection in social insects, where the prey may be a source of pathogens.
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16
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Deshpande R, Lee B, Grewal SS. Enteric bacterial infection in Drosophila induces whole-body alterations in metabolic gene expression independently of the immune deficiency signaling pathway. G3 GENES|GENOMES|GENETICS 2022; 12:6628587. [PMID: 35781508 PMCID: PMC9635644 DOI: 10.1093/g3journal/jkac163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 06/22/2022] [Indexed: 12/04/2022]
Abstract
When infected by intestinal pathogenic bacteria, animals initiate both local and systemic defence responses. These responses are required to reduce pathogen burden and also to alter host physiology and behavior to promote infection tolerance, and they are often mediated through alterations in host gene expression. Here, we have used transcriptome profiling to examine gene expression changes induced by enteric infection with the Gram-negative bacteria Pseudomonas entomophila in adult female Drosophila. We find that infection induces a strong upregulation of metabolic gene expression, including gut and fat body-enriched genes involved in lipid transport, lipolysis, and beta-oxidation, as well as glucose and amino acid metabolism genes. Furthermore, we find that the classic innate immune deficiency (Imd)/Relish/NF-KappaB pathway is not required for, and in some cases limits, these infection-mediated increases in metabolic gene expression. We also see that enteric infection with Pseudomonas entomophila downregulates the expression of many transcription factors and cell–cell signaling molecules, particularly those previously shown to be involved in gut-to-brain and neuronal signaling. Moreover, as with the metabolic genes, these changes occurred largely independent of the Imd pathway. Together, our study identifies many metabolic, signaling, and transcription factor gene expression changes that may contribute to organismal physiological and behavioral responses to enteric pathogen infection.
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Affiliation(s)
- Rujuta Deshpande
- Clark H Smith Brain Tumour Centre, Arnie Charbonneau Cancer Institute, Alberta Children’s Hospital Research Institute, University of Calgary , Alberta T2N 4N1, Canada
- Department of Biochemistry and Molecular Biology Calgary, University of Calgary , Alberta T2N 4N1, Canada
| | - Byoungchun Lee
- Clark H Smith Brain Tumour Centre, Arnie Charbonneau Cancer Institute, Alberta Children’s Hospital Research Institute, University of Calgary , Alberta T2N 4N1, Canada
- Department of Biochemistry and Molecular Biology Calgary, University of Calgary , Alberta T2N 4N1, Canada
| | - Savraj S Grewal
- Clark H Smith Brain Tumour Centre, Arnie Charbonneau Cancer Institute, Alberta Children’s Hospital Research Institute, University of Calgary , Alberta T2N 4N1, Canada
- Department of Biochemistry and Molecular Biology Calgary, University of Calgary , Alberta T2N 4N1, Canada
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