1
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Marco HG, Glendinning S, Ventura T, Gäde G. The gonadotropin-releasing hormone (GnRH) superfamily across Pancrustacea/Tetraconata: A role in metabolism? Mol Cell Endocrinol 2024; 590:112238. [PMID: 38616035 DOI: 10.1016/j.mce.2024.112238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Accepted: 04/05/2024] [Indexed: 04/16/2024]
Affiliation(s)
- Heather G Marco
- Department of Biological Sciences, University of Cape Town, Rondebosch, 7701, South Africa.
| | - Susan Glendinning
- Centre for BioInnovation, University of the Sunshine Coast, Sippy Downs, Queensland, 4556, Australia; School of Science, Technology and Engineering, University of the Sunshine Coast, Sippy Downs, Queensland, 4556, Australia
| | - Tomer Ventura
- Centre for BioInnovation, University of the Sunshine Coast, Sippy Downs, Queensland, 4556, Australia; School of Science, Technology and Engineering, University of the Sunshine Coast, Sippy Downs, Queensland, 4556, Australia
| | - Gerd Gäde
- Department of Biological Sciences, University of Cape Town, Rondebosch, 7701, South Africa
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2
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Bhola S, Park EJ, Lee HJ. Insect-derived extracts and peptides in neuroprotection. Nutr Neurosci 2024:1-9. [PMID: 39159004 DOI: 10.1080/1028415x.2024.2392410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/21/2024]
Abstract
Throughout history, various cultures have recognized the significance of insects and have integrated them into traditional medicinal practices. In addition to medicines, insects are garnering attention as a sustainable and nutritious dietary alternative. Although edible insects have long been recognized as food sources in many Asian cultures, recent scientific studies have highlighted their potential therapeutic benefits, particularly in the field of neuroprotection. This review explores insect-derived extracts and peptides, elucidating their neuroprotective potential. This review highlights the potential use of insects as a source of neuroprotective agents. Advancements in neuroprotection may find a key ally in insects as our understanding of the symbiotic relationship between insects and human health becomes more profound.
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Affiliation(s)
- Shivam Bhola
- Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon, Republic of Korea
- Institute for Aging and Clinical Nutrition Research, Gachon University, Seongnam, Republic of Korea
| | - Eun-Jung Park
- Institute for Aging and Clinical Nutrition Research, Gachon University, Seongnam, Republic of Korea
- Department of Food and Nutrition, College of BioNano Technology, Gachon University, Seongnam, Republic of Korea
| | - Hae-Jeung Lee
- Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon, Republic of Korea
- Institute for Aging and Clinical Nutrition Research, Gachon University, Seongnam, Republic of Korea
- Department of Food and Nutrition, College of BioNano Technology, Gachon University, Seongnam, Republic of Korea
- Gachon Biomedical Convergence Institute, Gachon University Gil Medical Center, Incheon, Republic of Korea
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3
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Park S, Kim MA, Sohn YC. Characterization of myoinhibitory peptide signaling system and its implication in larval metamorphosis and spawning behavior in Pacific abalone. Gen Comp Endocrinol 2024; 353:114521. [PMID: 38621462 DOI: 10.1016/j.ygcen.2024.114521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 03/15/2024] [Accepted: 04/11/2024] [Indexed: 04/17/2024]
Abstract
Myoinhibitory peptides (MIPs) affect various physiological functions, including juvenile hormone signaling, muscle contraction, larval development, and reproduction in invertebrates. Although MIPs are ligands for MIP and/or sex peptide receptors (MIP/SPRs) in diverse arthropods and model organisms belonging to Lophotrochozoa, the MIP signaling system has not yet been fully investigated in mollusks. In this study, we identified the MIP signaling system in the Pacific abalone Haliotis discus hannai (Hdh). Similar to the invertebrate MIPs, a total of eight paracopies of MIPs (named Hdh-MIP1 to Hdh-MIP8), harboring a WX5-7Wamide motif, except for Hdh-MIP2, were found in the Hdh-MIP precursor. Furthermore, we characterized a functional Hdh-MIPR, which responded to the Hdh-MIPs, except for Hdh-MIP2, possibly linked with the PKC/Ca2+ and PKA/cAMP signaling pathways. Hdh-MIPs delayed larval metamorphosis but increased the spawning behavior. These results suggest that the Hdh-MIP signaling system provides insights into the unique function of MIP in invertebrates.
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Affiliation(s)
- Sungwoo Park
- Department of Marine Bioscience, Gangneung-Wonju National University, Gangneung, Gangwon-do, Republic of Korea
| | - Mi Ae Kim
- East Coast Life Sciences Institute, Gangneung-Wonju National University, Gangneung, Gangwon-do, Republic of Korea
| | - Young Chang Sohn
- Department of Marine Bioscience, Gangneung-Wonju National University, Gangneung, Gangwon-do, Republic of Korea.
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4
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Paula GM, da Silva Menegasso AR, Dos-Santos-Pinto JRA, Malaspina O, Palma MS. Profiling the neuroproteomics of honeybee brain: A clue for understanding the role of neuropeptides in the modulation of aggressivity. J Proteomics 2024; 295:105089. [PMID: 38246419 DOI: 10.1016/j.jprot.2024.105089] [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: 11/22/2023] [Accepted: 01/15/2024] [Indexed: 01/23/2024]
Abstract
The aggressivity is modulated in honeybee brain through a series of actions in cascade mode, with the participation of the neuropeptides AmAST A (59-76) and AmTRP (254-262). The aggressivity of honeybees was stimulated by injecting both neuropeptides in the hemocoel of the worker honeybees, which were submitted to behavioral assays of aggression. The brain of stinger individuals were removed by dissection and submitted to proteomic analysis; shotgun proteomic approach of honeybee brain revealed that both neuropeptides activate a series of biochemical processes responsible by production of energy, neuronal plasticity and cell protection. In addition to this, AmTRP (254-262) elicited the expression of proteins related to the processing of the potential of action and lipid metabolism; meanwhile AmAST A (59-76) elicited the metabolism of steroids and Juvenile hormone-related metabolism, amongst others. Apparently, the most complex biochemical process seems to be the regulation of ATP production, which occurs at two levels: i) by a subgroup of proteins common to the three experimental groups, which are over-/under-regulated through glycolysis, pyruvate pathway, Krebbs cycle and oxidative phosphorylation; ii) by a subgroup of proteins unique to the each experimental group, which seems to be regulated through Protein-Protein Interactions, where the protein network regulated by AmTRP (254-262) seems to be more complex than the other two experimental groups. SIGNIFICANCE: Recently we reported the effect of the neuropeptides AmAST A (59-76) and AmTRP (254-262) in the modulation of the aggressive behavior of the worker honeybees. Up to now it is known that the simple presence of the allatostatin and tachykinin-related-peptide in bee brain, is enough for inducing the aggressive behavior. However, nothing was known about how these neuropeptides perform their action, inducing the aggressive behavior. The results of the present study elucidated some of the metabolic pathways that were activated or inhibited to support the complex defensive behavior, which includes the aggressivity. These results certainly will impact the behavioral research of honeybees, since we are paving the way for understanding the molecular base of regulation, of individual /nest defense of honeybees.
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Affiliation(s)
- Gabriela Mendonça Paula
- Department of Basic and Applied Biology, Institute of Biosciences of Rio Claro, São Paulo State University (UNESP), Rio Claro, SP 13506-900, Brazil
| | - Anally R da Silva Menegasso
- Department of Basic and Applied Biology, Institute of Biosciences of Rio Claro, São Paulo State University (UNESP), Rio Claro, SP 13506-900, Brazil
| | | | - Osmar Malaspina
- Department of Basic and Applied Biology, Institute of Biosciences of Rio Claro, São Paulo State University (UNESP), Rio Claro, SP 13506-900, Brazil
| | - Mario Sergio Palma
- Department of Basic and Applied Biology, Institute of Biosciences of Rio Claro, São Paulo State University (UNESP), Rio Claro, SP 13506-900, Brazil.
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5
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Šofranková L, Baňas M, Pipová N, Majláth I, Kurimský J, Cimbala R, Pavlík M, Mateos-Hernández L, Šimo L, Majláthová V. Effects of Electromagnetic Radiation on Neuropeptide Transcript Levels in the Synganglion of Ixodes ricinus. Pathogens 2023; 12:1398. [PMID: 38133283 PMCID: PMC10747470 DOI: 10.3390/pathogens12121398] [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: 09/21/2023] [Revised: 11/06/2023] [Accepted: 11/21/2023] [Indexed: 12/23/2023] Open
Abstract
Anthropogenic electromagnetic radiation is an important environmental factor affecting the functionality of biological systems. Sensitivity to various frequencies of electromagnetic radiation has been detected in ixodid ticks in the past. However, the physiological aspects of radiation effects have not yet been studied in ticks. In the presented experiment, 360 Ixodes ricinus ticks, 180 males and 180 females, were divided into 16 irradiated and 8 control groups. The irradiated groups were exposed to two different intensities of electromagnetic radiation with a frequency of 900 MHz at different lengths of exposure time. RT-PCR was utilized to determine the changes in mRNA levels in tick synganglia after irradiation. Four randomly selected neuropeptide genes were tested-allatotropin (at), FGLa-related allatostatins (fgla/ast), kinin, and arginine-vasopressin-like peptide (avpl). A significant decrease in transcript levels in all female groups exposed to higher intensity radiofrequency radiation for 1 to 3 h was found. After one hour of radiofrequency exposure, a significant downregulation in allatotropin expression in males was detected. A consistent downregulation of the at gene was detected in males irradiated with at a higher intensity. Unfortunately, the specific functions of the studied neuropeptides in ticks are not known yet, so a more comprehensive study is necessary to describe the effects of EMF on observed neuropeptides. This study represents the first report on the effects of the abiotic environment on tick neurophysiology.
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Affiliation(s)
- Lívia Šofranková
- Department of Animal Physiology, Pavol Jozef Šafárik University in Košice, Šrobárova 2, 04180 Košice, Slovakia; (L.Š.); (M.B.); (N.P.); (I.M.)
| | - Miroslav Baňas
- Department of Animal Physiology, Pavol Jozef Šafárik University in Košice, Šrobárova 2, 04180 Košice, Slovakia; (L.Š.); (M.B.); (N.P.); (I.M.)
| | - Natália Pipová
- Department of Animal Physiology, Pavol Jozef Šafárik University in Košice, Šrobárova 2, 04180 Košice, Slovakia; (L.Š.); (M.B.); (N.P.); (I.M.)
| | - Igor Majláth
- Department of Animal Physiology, Pavol Jozef Šafárik University in Košice, Šrobárova 2, 04180 Košice, Slovakia; (L.Š.); (M.B.); (N.P.); (I.M.)
| | - Juraj Kurimský
- Department of Electrical Power Engineering, Faculty of Electrical Engeneering and Informatics, Technical University of Košice, Mäsiarska 74, 04120 Košice, Slovakia; (J.K.); (R.C.); (M.P.)
| | - Roman Cimbala
- Department of Electrical Power Engineering, Faculty of Electrical Engeneering and Informatics, Technical University of Košice, Mäsiarska 74, 04120 Košice, Slovakia; (J.K.); (R.C.); (M.P.)
| | - Marek Pavlík
- Department of Electrical Power Engineering, Faculty of Electrical Engeneering and Informatics, Technical University of Košice, Mäsiarska 74, 04120 Košice, Slovakia; (J.K.); (R.C.); (M.P.)
| | - Lourdes Mateos-Hernández
- Laboratoire de Santé Animale, Unitè Mixte de Recherche de Biologie Molèculaire et d’Immunologie Parasitaires (UMR BIPAR), Ecole Nationale Vétérinaire d’Alfort, INRAE, ANSES, F-94700 Maisons-Alfort, France; (L.M.-H.); (L.Š.)
| | - Ladislav Šimo
- Laboratoire de Santé Animale, Unitè Mixte de Recherche de Biologie Molèculaire et d’Immunologie Parasitaires (UMR BIPAR), Ecole Nationale Vétérinaire d’Alfort, INRAE, ANSES, F-94700 Maisons-Alfort, France; (L.M.-H.); (L.Š.)
| | - Viktória Majláthová
- Department of Animal Physiology, Pavol Jozef Šafárik University in Košice, Šrobárova 2, 04180 Košice, Slovakia; (L.Š.); (M.B.); (N.P.); (I.M.)
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6
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Wang HY, Yu K, Liu WJ, Jiang HM, Guo SQ, Xu JP, Li YD, Chen P, Ding XY, Fu P, Zhang YCF, Mei YS, Zhang G, Zhou HB, Jing J. Molecular Characterization of Two Wamide Neuropeptide Signaling Systems in Mollusk Aplysia. ACS Chem Neurosci 2023. [PMID: 37339428 DOI: 10.1021/acschemneuro.3c00158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2023] Open
Abstract
Neuropeptides with the C-terminal Wamide (Trp-NH2) are one of the last common ancestors of peptide families of eumetazoans and play various physiological roles. In this study, we sought to characterize the ancient Wamide peptides signaling systems in the marine mollusk Aplysia californica, i.e., APGWamide (APGWa) and myoinhibitory peptide (MIP)/Allatostatin B (AST-B) signaling systems. A common feature of protostome APGWa and MIP/AST-B peptides is the presence of a conserved Wamide motif in the C-terminus. Although orthologs of the APGWa and MIP signaling systems have been studied to various extents in annelids or other protostomes, no complete signaling systems have yet been characterized in mollusks. Here, through bioinformatics, molecular and cellular biology, we identified three receptors for APGWa, namely, APGWa-R1, APGWa-R2, and APGWa-R3. The EC50 values for APGWa-R1, APGWa-R2, and APGWa-R3 are 45, 2100, and 2600 nM, respectively. For the MIP signaling system, we predicted 13 forms of peptides, i.e., MIP1-13 that could be generated from the precursor identified in our study, with MIP5 (WKQMAVWa) having the largest number of copies (4 copies). Then, a complete MIP receptor (MIPR) was identified and the MIP1-13 peptides activated the MIPR in a dose-dependent manner, with EC50 values ranging from 40 to 3000 nM. Peptide analogs with alanine substitution experiments demonstrated that the Wamide motif at the C-terminus is necessary for receptor activity in both the APGWa and MIP systems. Moreover, cross-activity between the two signaling systems showed that MIP1, 4, 7, and 8 ligands could activate APGWa-R1 with a low potency (EC50 values: 2800-22,000 nM), which further supported that the APGWa and MIP signaling systems are somewhat related. In summary, our successful characterization of Aplysia APGWa and MIP signaling systems represents the first example in mollusks and provides an important basis for further functional studies in this and other protostome species. Moreover, this study may be useful for elucidating and clarifying the evolutionary relationship between the two Wamide signaling systems (i.e., APGWa and MIP systems) and their other extended neuropeptide signaling systems.
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Affiliation(s)
- Hui-Ying Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Institute for Brain Sciences, Chinese Academy of Medical Sciences Research Unit of Extracellular RNA, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, Advanced Institute for Life Sciences, Chemistry and Biomedicine Innovation Center, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Ke Yu
- State Key Laboratory of Pharmaceutical Biotechnology, Institute for Brain Sciences, Chinese Academy of Medical Sciences Research Unit of Extracellular RNA, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, Advanced Institute for Life Sciences, Chemistry and Biomedicine Innovation Center, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Wei-Jia Liu
- State Key Laboratory of Pharmaceutical Biotechnology, Institute for Brain Sciences, Chinese Academy of Medical Sciences Research Unit of Extracellular RNA, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, Advanced Institute for Life Sciences, Chemistry and Biomedicine Innovation Center, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Hui-Min Jiang
- State Key Laboratory of Pharmaceutical Biotechnology, Institute for Brain Sciences, Chinese Academy of Medical Sciences Research Unit of Extracellular RNA, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, Advanced Institute for Life Sciences, Chemistry and Biomedicine Innovation Center, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Shi-Qi Guo
- State Key Laboratory of Pharmaceutical Biotechnology, Institute for Brain Sciences, Chinese Academy of Medical Sciences Research Unit of Extracellular RNA, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, Advanced Institute for Life Sciences, Chemistry and Biomedicine Innovation Center, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Ju-Ping Xu
- State Key Laboratory of Pharmaceutical Biotechnology, Institute for Brain Sciences, Chinese Academy of Medical Sciences Research Unit of Extracellular RNA, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, Advanced Institute for Life Sciences, Chemistry and Biomedicine Innovation Center, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Ya-Dong Li
- State Key Laboratory of Pharmaceutical Biotechnology, Institute for Brain Sciences, Chinese Academy of Medical Sciences Research Unit of Extracellular RNA, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, Advanced Institute for Life Sciences, Chemistry and Biomedicine Innovation Center, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Ping Chen
- State Key Laboratory of Pharmaceutical Biotechnology, Institute for Brain Sciences, Chinese Academy of Medical Sciences Research Unit of Extracellular RNA, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, Advanced Institute for Life Sciences, Chemistry and Biomedicine Innovation Center, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Xue-Ying Ding
- State Key Laboratory of Pharmaceutical Biotechnology, Institute for Brain Sciences, Chinese Academy of Medical Sciences Research Unit of Extracellular RNA, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, Advanced Institute for Life Sciences, Chemistry and Biomedicine Innovation Center, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Ping Fu
- State Key Laboratory of Pharmaceutical Biotechnology, Institute for Brain Sciences, Chinese Academy of Medical Sciences Research Unit of Extracellular RNA, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, Advanced Institute for Life Sciences, Chemistry and Biomedicine Innovation Center, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Yan-Chu-Fei Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, Institute for Brain Sciences, Chinese Academy of Medical Sciences Research Unit of Extracellular RNA, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, Advanced Institute for Life Sciences, Chemistry and Biomedicine Innovation Center, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Yu-Shuo Mei
- State Key Laboratory of Pharmaceutical Biotechnology, Institute for Brain Sciences, Chinese Academy of Medical Sciences Research Unit of Extracellular RNA, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, Advanced Institute for Life Sciences, Chemistry and Biomedicine Innovation Center, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Guo Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, Institute for Brain Sciences, Chinese Academy of Medical Sciences Research Unit of Extracellular RNA, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, Advanced Institute for Life Sciences, Chemistry and Biomedicine Innovation Center, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Hai-Bo Zhou
- Peng Cheng Laboratory, Shenzhen 518000, China
- School of Electronic Science and Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Jian Jing
- State Key Laboratory of Pharmaceutical Biotechnology, Institute for Brain Sciences, Chinese Academy of Medical Sciences Research Unit of Extracellular RNA, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, Advanced Institute for Life Sciences, Chemistry and Biomedicine Innovation Center, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
- Peng Cheng Laboratory, Shenzhen 518000, China
- Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, United States
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Waldman J, Xavier MA, Vieira LR, Logullo R, Braz GRC, Tirloni L, Ribeiro JMC, Veenstra JA, Silva Vaz ID. Neuropeptides in Rhipicephalus microplus and other hard ticks. Ticks Tick Borne Dis 2022; 13:101910. [PMID: 35121230 PMCID: PMC9477089 DOI: 10.1016/j.ttbdis.2022.101910] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 01/24/2022] [Accepted: 01/25/2022] [Indexed: 12/15/2022]
Abstract
The synganglion is the central nervous system of ticks and, as such, controls tick physiology. It does so through the production and release of signaling molecules, many of which are neuropeptides. These peptides can function as neurotransmitters, neuromodulators and/or neurohormones, although in most cases their functions remain to be established. We identified and performed in silico characterization of neuropeptides present in different life stages and organs of Rhipicephalus microplus, generating transcriptomes from ovary, salivary glands, fat body, midgut and embryo. Annotation of synganglion transcripts led to the identification of 32 functional categories of proteins, of which the most abundant were: secreted, energetic metabolism and oxidant metabolism/detoxification. Neuropeptide precursors are among the sequences over-represented in R. microplus synganglion, with at least 5-fold higher transcription compared with other stages/organs. A total of 52 neuropeptide precursors were identified: ACP, achatin, allatostatins A, CC and CCC, allatotropin, bursicon A/B, calcitonin A and B, CCAP, CCHamide, CCRFamide, CCH/ITP, corazonin, DH31, DH44, eclosion hormone, EFLamide, EFLGGPamide, elevenin, ETH, FMRFamide myosuppressin-like, glycoprotein A2/B5, gonadulin, IGF, inotocin, insulin-like peptides, iPTH, leucokinin, myoinhibitory peptide, NPF 1 and 2, orcokinin, proctolin, pyrokinin/periviscerokinin, relaxin, RYamide, SIFamide, sNPF, sulfakinin, tachykinin and trissin. Several of these neuropeptides have not been previously reported in ticks, as the presence of ETH that was first clearly identified in Parasitiformes, which include ticks and mites. Prediction of the mature neuropeptides from precursor sequences was performed using available information about these peptides from other species, conserved domains and motifs. Almost all neuropeptides identified are also present in other tick species. Characterizing the role of neuropeptides and their respective receptors in tick physiology can aid the evaluation of their potential as drug targets.
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Affiliation(s)
- Jéssica Waldman
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Marina Amaral Xavier
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Larissa Rezende Vieira
- Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Raquel Logullo
- Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Gloria Regina Cardoso Braz
- Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Instituto Nacional de Ciência e Tecnologia - Entomologia Molecular, Rio de Janeiro, RJ, Brazil
| | - Lucas Tirloni
- Tick-Pathogen Transmission Unit, Laboratory of Bacteriology, National Institute of Allergy and Infectious Diseases, Hamilton, MT, USA
| | - José Marcos C Ribeiro
- Vector Biology Section, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, Rockville, MD, USA
| | - Jan A Veenstra
- Institut de Neurosciences Cognitives et Intégratives d'Aquitaine, UMR 5287 CNRS, Université de Bordeaux, Bordeaux, France
| | - Itabajara da Silva Vaz
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Instituto Nacional de Ciência e Tecnologia - Entomologia Molecular, Rio de Janeiro, RJ, Brazil; Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
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8
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Hopkins BR, Perry JC. The evolution of sex peptide: sexual conflict, cooperation, and coevolution. Biol Rev Camb Philos Soc 2022; 97:1426-1448. [PMID: 35249265 PMCID: PMC9256762 DOI: 10.1111/brv.12849] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 02/18/2022] [Accepted: 02/22/2022] [Indexed: 12/17/2022]
Abstract
A central paradigm in evolutionary biology is that the fundamental divergence in the fitness interests of the sexes (‘sexual conflict’) can lead to both the evolution of sex‐specific traits that reduce fitness for individuals of the opposite sex, and sexually antagonistic coevolution between the sexes. However, clear examples of traits that evolved in this way – where a single trait in one sex demonstrably depresses the fitness of members of the opposite sex, resulting in antagonistic coevolution – are rare. The Drosophila seminal protein ‘sex peptide’ (SP) is perhaps the most widely cited example of a trait that appears to harm females while benefitting males. Transferred in the ejaculate by males during mating, SP triggers profound and wide‐ranging changes in female behaviour and physiology. Early studies reported that the transfer of SP enhances male fitness while depressing female fitness, providing the foundations for the widespread view that SP has evolved to manipulate females for male benefit. Here, we argue that this view is (i) a simplification of a wider body of contradictory empirical research, (ii) narrow with respect to theory describing the origin and maintenance of sexually selected traits, and (iii) hard to reconcile with what we know of the evolutionary history of SP's effects on females. We begin by charting the history of thought regarding SP, both at proximate (its production, function, and mechanism of action) and ultimate (its fitness consequences and evolutionary history) levels, reviewing how studies of SP were central to the development of the field of sexual conflict. We describe a prevailing paradigm for SP's evolution: that SP originated and continues to evolve to manipulate females for male benefit. In contrast to this view, we argue on three grounds that the weight of evidence does not support the view that receipt of SP decreases female fitness: (i) results from studies of SP's impact on female fitness are mixed and more often neutral or positive, with fitness costs emerging only under nutritional extremes; (ii) whether costs from SP are appreciable in wild‐living populations remains untested; and (iii) recently described confounds in genetic manipulations of SP raise the possibility that measures of the costs and benefits of SP have been distorted. Beyond SP's fitness effects, comparative and genetic data are also difficult to square with the idea that females suffer fitness costs from SP. Instead, these data – from functional and evolutionary genetics and the neural circuitry of female responses to SP – suggest an evolutionary history involving the evolution of a dedicated SP‐sensing apparatus in the female reproductive tract that is likely to have evolved because it benefits females, rather than harms them. We end by exploring theory and evidence that SP benefits females by functioning as a signal of male quality or of sperm receipt and storage (or both). The expanded view of the evolution of SP that we outline recognises the context‐dependent and fluctuating roles played by both cooperative and antagonistic selection in the origin and maintenance of reproductive traits.
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Affiliation(s)
- Ben R. Hopkins
- Department of Evolution and Ecology University of California – Davis One Shields Avenue Davis CA 95616 U.S.A
| | - Jennifer C. Perry
- School of Biological Sciences University of East Anglia Norwich NR4 7TJ U.K
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9
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Sun Y, Fu D, Liu B, Wang L, Chen H. Functional Characterization of Allatostatin C (PISCF/AST) and Juvenile Hormone Acid O-Methyltransferase in Dendroctonus armandi. Int J Mol Sci 2022; 23:ijms23052749. [PMID: 35269892 PMCID: PMC8910878 DOI: 10.3390/ijms23052749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/14/2022] [Accepted: 02/27/2022] [Indexed: 11/20/2022] Open
Abstract
Allatostatin C (PISCF/AST) is a neuropeptide gene that affects juvenile hormone (JH) synthesis in the corpora allata. Juvenile hormone acid O-methyltransferase (JHAMT) is a key gene in the JH biosynthetic pathway. In this study, two genes encoding DaAST and DaJHAMT were cloned. Both DaAST and DaJHAMT were expressed in the larvae, pupae and adults of Chinese white pine beetle (Dendroctonus armandi), and highly expressed in the head and the gut. The expression of the two genes was induced by JH analog (JHA) methoprene and the functions of the two genes were then investigated by RNAi. Considering the role of hormones in metamorphosis, JHA significantly induced DaAST and DaJHAMT in the larval stage. DaAST knockdown in larvae, pupae and adults significantly increased the DaJHAMT mRNA levels. Moreover, knockdown of DaAST instead of DaJHAMT increased pupae mortality and the abnormal rate of emergence morphology and reduced emergence rates. However, knockdown of DaJHAMT instead of DaAST significantly reduced frontalin biosynthesis in adult males. The results showed that DaAST acts as an allatostatin and inhibits JH biosynthesis, and that JHAMT is a key regulatory enzyme for JH synthesis in the D. armandi.
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Affiliation(s)
- Yaya Sun
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China;
- College of Forestry, Northwest A&F University, No. 3 Taicheng Road, Yangling, Xianyang 712100, China; (D.F.); (B.L.); (L.W.)
| | - Danyang Fu
- College of Forestry, Northwest A&F University, No. 3 Taicheng Road, Yangling, Xianyang 712100, China; (D.F.); (B.L.); (L.W.)
| | - Bin Liu
- College of Forestry, Northwest A&F University, No. 3 Taicheng Road, Yangling, Xianyang 712100, China; (D.F.); (B.L.); (L.W.)
| | - Linjun Wang
- College of Forestry, Northwest A&F University, No. 3 Taicheng Road, Yangling, Xianyang 712100, China; (D.F.); (B.L.); (L.W.)
| | - Hui Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China;
- Correspondence: ; Tel.: +86-02085280256
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10
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Insects as a New Complex Model in Hormonal Basis of Obesity. Int J Mol Sci 2021; 22:ijms222011066. [PMID: 34681728 PMCID: PMC8540125 DOI: 10.3390/ijms222011066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 10/07/2021] [Accepted: 10/09/2021] [Indexed: 11/30/2022] Open
Abstract
Nowadays, one of the biggest problems in healthcare is an obesity epidemic. Consumption of cheap and low-quality energy-rich diets, low physical activity, and sedentary work favor an increase in the number of obesity cases within many populations/nations. This is a burden on society, public health, and the economy with many deleterious consequences. Thus, studies concerning this disorder are extremely needed, including searching for new, effective, and fitting models. Obesity may be related, among other factors, to disrupting adipocytes activity, disturbance of metabolic homeostasis, dysregulation of hormonal balance, cardiovascular problems, or disorders in nutrition which may lead to death. Because of the high complexity of obesity, it is not easy to find an ideal model for its studies which will be suitable for genetic and physiological analysis including specification of different compounds’ (hormones, neuropeptides) functions, as well as for signaling pathways analysis. In recent times, in search of new models for human diseases there has been more and more attention paid to insects, especially in neuro-endocrine regulation. It seems that this group of animals might also be a new model for human obesity. There are many arguments that insects are a good, multidirectional, and complex model for this disease. For example, insect models can have similar conservative signaling pathways (e.g., JAK-STAT signaling pathway), the presence of similar hormonal axis (e.g., brain–gut axis), or occurrence of structural and functional homologues between neuropeptides (e.g., neuropeptide F and human neuropeptide Y, insulin-like peptides, and human insulin) compared to humans. Here we give a hint to use insects as a model for obesity that can be used in multiple ways: as a source of genetic and peptidomic data about etiology and development correlated with obesity occurrence as well as a model for novel hormonal-based drug activity and their impact on mechanism of disease occurrence.
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Chowański S, Walkowiak-Nowicka K, Winkiel M, Marciniak P, Urbański A, Pacholska-Bogalska J. Insulin-Like Peptides and Cross-Talk With Other Factors in the Regulation of Insect Metabolism. Front Physiol 2021; 12:701203. [PMID: 34267679 PMCID: PMC8276055 DOI: 10.3389/fphys.2021.701203] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 06/04/2021] [Indexed: 02/06/2023] Open
Abstract
The insulin-like peptide (ILP) and insulin-like growth factor (IGF) signalling pathways play a crucial role in the regulation of metabolism, growth and development, fecundity, stress resistance, and lifespan. ILPs are encoded by multigene families that are expressed in nervous and non-nervous organs, including the midgut, salivary glands, and fat body, in a tissue- and stage-specific manner. Thus, more multidirectional and more complex control of insect metabolism can occur. ILPs are not the only factors that regulate metabolism. ILPs interact in many cross-talk interactions of different factors, for example, hormones (peptide and nonpeptide), neurotransmitters and growth factors. These interactions are observed at different levels, and three interactions appear to be the most prominent/significant: (1) coinfluence of ILPs and other factors on the same target cells, (2) influence of ILPs on synthesis/secretion of other factors regulating metabolism, and (3) regulation of activity of cells producing/secreting ILPs by various factors. For example, brain insulin-producing cells co-express sulfakinins (SKs), which are cholecystokinin-like peptides, another key regulator of metabolism, and express receptors for tachykinin-related peptides, the next peptide hormones involved in the control of metabolism. It was also shown that ILPs in Drosophila melanogaster can directly and indirectly regulate AKH. This review presents an overview of the regulatory role of insulin-like peptides in insect metabolism and how these factors interact with other players involved in its regulation.
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Affiliation(s)
- Szymon Chowański
- Department of Animal Physiology and Development, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - Karolina Walkowiak-Nowicka
- Department of Animal Physiology and Development, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - Magdalena Winkiel
- Department of Animal Physiology and Development, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - Pawel Marciniak
- Department of Animal Physiology and Development, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - Arkadiusz Urbański
- Department of Animal Physiology and Development, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland.,HiProMine S.A., Robakowo, Poland
| | - Joanna Pacholska-Bogalska
- Department of Animal Physiology and Development, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
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12
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Urbański A, Walkowiak-Nowicka K, Nowicki G, Chowański S, Rosiński G. Effect of Short-Term Desiccation, Recovery Time, and CAPA-PVK Neuropeptide on the Immune System of the Burying Beetle Nicrophorus vespilloides. Front Physiol 2021; 12:671463. [PMID: 34234689 PMCID: PMC8255627 DOI: 10.3389/fphys.2021.671463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 05/17/2021] [Indexed: 11/13/2022] Open
Abstract
Environmental conditions, especially related to winter, are crucial for shaping activity of insect immune system. However, our previous research clearly indicates differences in the immune system functioning when the cold stress was induced in the laboratory conditions and when the beetles were collected from natural environment during winter. This is probably related to the multiplication of observed effects by simultaneous presence of different stress factors characteristic of winter, including desiccation. For these reasons, our next step was analysis of the effects of short-term desiccation and recovery time on the functioning of immune system of burying beetle Nicrophorus vespilloides. Also, the effect of Tenmo–PVK-2 (tenebrionid periviscerokinin), member of the CAPA–PVK neuropeptide family, was investigated to better understand observed changes. Short-term desiccation decreases the phagocytic activity of burying beetle haemocytes, which is correlated with a reduction in their adhesive ability. On the other hand, there was a significant increase in phenoloxidase (PO) activity and the level of proPO expression, which may suggest sealing the cuticula by melanin deposition and prevention of water loss. Additionally, the elevated level of defensin expression may be associated with the cross-talk between mechanisms, which participate in insect response to environmental stress, including pathogen infection. After 1 h of recovery time, the activity of tested cellular and humoral mechanisms was mostly back to the control level. However, inhibition of the activity of PO and down-regulation of proPO were noted. These results also indicate importance of melanin deposition during water loss. Moreover, it suggests that some changes in immune system functioning during stress conditions do not have an immune function. Interestingly, part of the effects characteristic of recovery time were also observed after the application of Tenmo–PVK-2, mainly related to haemocyte morphology. These results indicate that CAPA–PVK neuropeptides may also influence on activity of burying beetle immune system. It should be also highlighted that, because of the study of the effects of CAPA–PVK neuropeptides, homologs of vertebrate neuromedin U, the results may be interesting for search evolutionary similarities in the functioning of the neuroendocrine system of insects and vertebrates.
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Affiliation(s)
- Arkadiusz Urbański
- Department of Animal Physiology and Developmental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland.,HiProMine S.A., Robakowo, Poland
| | - Karolina Walkowiak-Nowicka
- Department of Animal Physiology and Developmental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Grzegorz Nowicki
- Molecular Virology Research Unit, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland.,genXone S.A., Złotniki, Poland
| | - Szymon Chowański
- Department of Animal Physiology and Developmental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Grzegorz Rosiński
- Department of Animal Physiology and Developmental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
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Mateos-Hernández L, Pipová N, Allain E, Henry C, Rouxel C, Lagrée AC, Haddad N, Boulouis HJ, Valdés JJ, Alberdi P, de la Fuente J, Cabezas-Cruz A, Šimo L. Enlisting the Ixodes scapularis Embryonic ISE6 Cell Line to Investigate the Neuronal Basis of Tick-Pathogen Interactions. Pathogens 2021; 10:pathogens10010070. [PMID: 33466622 PMCID: PMC7828734 DOI: 10.3390/pathogens10010070] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/05/2021] [Accepted: 01/08/2021] [Indexed: 01/03/2023] Open
Abstract
Neuropeptides are small signaling molecules expressed in the tick central nervous system, i.e., the synganglion. The neuronal-like Ixodes scapularis embryonic cell line, ISE6, is an effective tool frequently used for examining tick–pathogen interactions. We detected 37 neuropeptide transcripts in the I. scapularis ISE6 cell line using in silico methods, and six of these neuropeptide genes were used for experimental validation. Among these six neuropeptide genes, the tachykinin-related peptide (TRP) of ISE6 cells varied in transcript expression depending on the infection strain of the tick-borne pathogen, Anaplasma phagocytophilum. The immunocytochemistry of TRP revealed cytoplasmic expression in a prominent ISE6 cell subpopulation. The presence of TRP was also confirmed in A. phagocytophilum-infected ISE6 cells. The in situ hybridization and immunohistochemistry of TRP of I. scapularis synganglion revealed expression in distinct neuronal cells. In addition, TRP immunoreaction was detected in axons exiting the synganglion via peripheral nerves as well as in hemal nerve-associated lateral segmental organs. The characterization of a complete Ixodes neuropeptidome in ISE6 cells may serve as an effective in vitro tool to study how tick-borne pathogens interact with synganglion components that are vital to tick physiology. Therefore, our current study is a potential stepping stone for in vivo experiments to further examine the neuronal basis of tick–pathogen interactions.
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Affiliation(s)
- Lourdes Mateos-Hernández
- UMR BIPAR, Laboratoire de Santé Animale, ANSES, INRAE, Ecole Nationale Vétérinaire d’Alfort, Paris-Est Sup, 94700 Maisons-Alfort, France; (L.M.-H.); (E.A.); (C.R.); (A.-C.L.); (N.H.); (H.-J.B.)
| | - Natália Pipová
- Faculty of Science, Pavol Jozef Šafarik University in Košice, 04180 Košice, Slovakia;
| | - Eléonore Allain
- UMR BIPAR, Laboratoire de Santé Animale, ANSES, INRAE, Ecole Nationale Vétérinaire d’Alfort, Paris-Est Sup, 94700 Maisons-Alfort, France; (L.M.-H.); (E.A.); (C.R.); (A.-C.L.); (N.H.); (H.-J.B.)
| | - Céline Henry
- AgroParisTech, Micalis Institute, Université Paris-Saclay, PAPPSO, INRAE, 78350 Jouy-en-Josas, France;
| | - Clotilde Rouxel
- UMR BIPAR, Laboratoire de Santé Animale, ANSES, INRAE, Ecole Nationale Vétérinaire d’Alfort, Paris-Est Sup, 94700 Maisons-Alfort, France; (L.M.-H.); (E.A.); (C.R.); (A.-C.L.); (N.H.); (H.-J.B.)
| | - Anne-Claire Lagrée
- UMR BIPAR, Laboratoire de Santé Animale, ANSES, INRAE, Ecole Nationale Vétérinaire d’Alfort, Paris-Est Sup, 94700 Maisons-Alfort, France; (L.M.-H.); (E.A.); (C.R.); (A.-C.L.); (N.H.); (H.-J.B.)
| | - Nadia Haddad
- UMR BIPAR, Laboratoire de Santé Animale, ANSES, INRAE, Ecole Nationale Vétérinaire d’Alfort, Paris-Est Sup, 94700 Maisons-Alfort, France; (L.M.-H.); (E.A.); (C.R.); (A.-C.L.); (N.H.); (H.-J.B.)
| | - Henri-Jean Boulouis
- UMR BIPAR, Laboratoire de Santé Animale, ANSES, INRAE, Ecole Nationale Vétérinaire d’Alfort, Paris-Est Sup, 94700 Maisons-Alfort, France; (L.M.-H.); (E.A.); (C.R.); (A.-C.L.); (N.H.); (H.-J.B.)
| | - James J. Valdés
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Branisovska 31, 37005 Ceske Budejovice, Czech Republic;
- Department of Virology, Veterinary Research Institute, Hudcova 70, 62100 Brno, Czech Republic
| | - Pilar Alberdi
- SaBio Instituto de Investigación en Recursos Cinegéticos IREC-CSIC-UCLM-JCCM, Ronda de Toledo s/n, 13005 Ciudad Real, Spain; (P.A.); (J.d.l.F.)
- Neuroplasticity and Neurodegeneration Group, Regional Centre for Biomedical Research (CRIB), Ciu-dad Real Medical School, University of Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - José de la Fuente
- SaBio Instituto de Investigación en Recursos Cinegéticos IREC-CSIC-UCLM-JCCM, Ronda de Toledo s/n, 13005 Ciudad Real, Spain; (P.A.); (J.d.l.F.)
- Center for Veterinary Health Sciences, Department of Veterinary Pathobiology, Oklahoma State University, Stillwater, OK 74078, USA
| | - Alejandro Cabezas-Cruz
- UMR BIPAR, Laboratoire de Santé Animale, ANSES, INRAE, Ecole Nationale Vétérinaire d’Alfort, Paris-Est Sup, 94700 Maisons-Alfort, France; (L.M.-H.); (E.A.); (C.R.); (A.-C.L.); (N.H.); (H.-J.B.)
- Correspondence: (A.C.-C.); (L.Š.); Tel.: +33-6-31-23-51-91 (A.C.-C.); +33-1-49-77-46-52 (L.Š.)
| | - Ladislav Šimo
- UMR BIPAR, Laboratoire de Santé Animale, ANSES, INRAE, Ecole Nationale Vétérinaire d’Alfort, Paris-Est Sup, 94700 Maisons-Alfort, France; (L.M.-H.); (E.A.); (C.R.); (A.-C.L.); (N.H.); (H.-J.B.)
- Correspondence: (A.C.-C.); (L.Š.); Tel.: +33-6-31-23-51-91 (A.C.-C.); +33-1-49-77-46-52 (L.Š.)
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Li Z, Cardoso JCR, Peng M, Inácio JPS, Power DM. Evolution and Potential Function in Molluscs of Neuropeptide and Receptor Homologues of the Insect Allatostatins. Front Endocrinol (Lausanne) 2021; 12:725022. [PMID: 34659116 PMCID: PMC8514136 DOI: 10.3389/fendo.2021.725022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 08/20/2021] [Indexed: 12/03/2022] Open
Abstract
The allatostatins (ASTs), AST-A, AST-B and AST-C, have mainly been investigated in insects. They are a large group of small pleotropic alloregulatory neuropeptides that are unrelated in sequence and activate receptors of the rhodopsin G-protein coupled receptor family (GPCRs). The characteristics and functions of the homologue systems in the molluscs (Buccalin, MIP and AST-C-like), the second most diverse group of protostomes after the arthropods, and of high interest for evolutionary studies due to their less rearranged genomes remains to be explored. In the present study their evolution is deciphered in molluscs and putative functions assigned in bivalves through meta-analysis of transcriptomes and experiments. Homologues of the three arthropod AST-type peptide precursors were identified in molluscs and produce a larger number of mature peptides than in insects. The number of putative receptors were also distinct across mollusc species due to lineage and species-specific duplications. Our evolutionary analysis of the receptors identified for the first time in a mollusc, the cephalopod, GALR-like genes, which challenges the accepted paradigm that AST-AR/buccalin-Rs are the orthologues of vertebrate GALRs in protostomes. Tissue transcriptomes revealed the peptides, and their putative receptors have a widespread distribution in bivalves and in the bivalve Mytilus galloprovincialis, elements of the three peptide-receptor systems are highly abundant in the mantle an innate immune barrier tissue. Exposure of M. galloprovincialis to lipopolysaccharide or a marine pathogenic bacterium, Vibrio harveyi, provoked significant modifications in the expression of genes of the peptide precursor and receptors of the AST-C-like system in the mantle suggesting involvement in the immune response. Overall, our study reveals that homologues of the arthropod AST-systems in molluscs are potentially more complex due to the greater number of putative mature peptides and receptor genes. In bivalves they have a broad and varying tissue distribution and abundance, and the elements of the AST-C-like family may have a putative function in the immune response.
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Affiliation(s)
- Zhi Li
- Comparative Endocrinology and Integrative Biology, Centre of Marine Sciences, Universidade do Algarve, Faro, Portugal
| | - João C. R. Cardoso
- Comparative Endocrinology and Integrative Biology, Centre of Marine Sciences, Universidade do Algarve, Faro, Portugal
- *Correspondence: Deborah M. Power, ; João C. R. Cardoso,
| | - Maoxiao Peng
- Comparative Endocrinology and Integrative Biology, Centre of Marine Sciences, Universidade do Algarve, Faro, Portugal
| | - João P. S. Inácio
- Comparative Endocrinology and Integrative Biology, Centre of Marine Sciences, Universidade do Algarve, Faro, Portugal
| | - Deborah M. Power
- Comparative Endocrinology and Integrative Biology, Centre of Marine Sciences, Universidade do Algarve, Faro, Portugal
- International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China
- *Correspondence: Deborah M. Power, ; João C. R. Cardoso,
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Buchberger AR, DeLaney K, Liu Y, Vu NQ, Helfenbein K, Li L. Mass Spectrometric Profiling of Neuropeptides in Callinectes sapidus during Hypoxia Stress. ACS Chem Neurosci 2020; 11:3097-3106. [PMID: 32840999 DOI: 10.1021/acschemneuro.0c00439] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Oxygen (O2) is a critical component of life; without proper O2 levels, cells are unable to respire, meaning glucose cannot be utilized. Thus, hypoxia (low O2 levels) is a well-documented stressor, especially in aquatic environments. Neuropeptides are a major class of regulators for stress-induced responses; however, their global expression changes during stress are not well characterized due to the natural complexity of the nervous system. Beyond being a neurological model organism, crustaceans are regularly exposed to hypoxia, making them a relevant system for this study. Several neuropeptide families, including orcokinins, RFamides, and allatostatin A-types, show dynamic dysregulation due to hypoxic stress. In particular, the brain showed the most dynamic changes with a survival mechanism "switching" (i.e., significant increase to decrease) of neuropeptide content between moderate and severe hypoxia (e.g., NFDEDRSGFA, FDAFTTGFGHS, NRNFLRFamide, and APSGFLGMRamide). Globally, neuropeptides in different tissues appeared to exhibit unique expression patterns at the various severities of hypoxia, including LSSSNSPSSTPL and NFDEIDRSSFGF. Overall, this study provides clear evidence for the benefits of globally analyzing biomolecules and that neuropeptides play a critical role in how crustaceans adapt due to hypoxic stress.
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Affiliation(s)
- Amanda R. Buchberger
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53705, United States
| | - Kellen DeLaney
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53705, United States
| | - Yang Liu
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53705, United States
| | - Nhu Q. Vu
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53705, United States
| | - Kylie Helfenbein
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53705, United States
| | - Lingjun Li
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53705, United States
- School of Pharmacy, University of Wisconsin-Madison, 5125 Rennebohm Hall, 777 Highland Drive, Madison, Wisconsin 53706, United States
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16
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Xiong C, Kaczmarek K, Zabrocki J, Nachman RJ, Pietrantonio PV. Activity of native tick kinins and peptidomimetics on the cognate target G protein-coupled receptor from the cattle fever tick, Rhipicephalus microplus (Acari: Ixodidae). PEST MANAGEMENT SCIENCE 2020; 76:3423-3431. [PMID: 31794138 DOI: 10.1002/ps.5704] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 11/13/2019] [Accepted: 11/28/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Kinins are multifunctional neuropeptides that regulate key insect physiological processes such as diuresis, feeding, and ecdysis. However, the physiological roles of kinins in ticks are unclear. Furthermore, ticks have an expanded number of kinin paracopies in the kinin gene. Silencing the kinin receptor (KR) in females of Rhipicephalus microplus reduces reproductive fitness. Thus, it appears the kinin signaling system is important for tick physiology and its disruption may have potential for tick control. RESULTS We determined the activities of endogenous kinins on the KR, a G protein-coupled receptor, and identified potent peptidomimetics. Fourteen predicted R. microplus kinins (Rhimi-K), and 11 kinin analogs containing aminoisobutyric acid (Aib) were tested. The latter incorporated tick kinin sequences and/or were modified for enhanced resistance to arthropod peptidases. A high-throughput screen using a calcium fluorescence assay in 384-well plates was performed. All tested kinins and Aib analogs were full agonists. The most potent kinin and two kinin analogs were equipotent. Analogs 2414 ([Aib]FS[Aib]WGa) and 2412 ([Aib]FG[Aib]WGa) were the most active with EC50 values of 0.9 and 1.1 nM, respectively, matching the EC50 of the most potent tick kinin, Rhimi-K-14 (QDSFNPWGa) (EC50 = 1 nM). The potent analog 2415 ([Aib]FR[Aib]WGa, EC50 = 6.8 nM) includes both Aib molecules for resistance to peptidases and a positively charged residue, R, for enhanced water solubility and amphiphilic character. CONCLUSION These tick kinins and pseudopeptides expand the repertoire of reagents for tick physiology and toxicology towards finding novel targets for tick management. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Caixing Xiong
- Department of Entomology, Texas A&M University, College Station, TX, USA
| | - Krzysztof Kaczmarek
- Institute of Organic Chemistry, Lodz University of Technology, Lodz, Poland
- Insect Neuropeptide Lab, Insect Control and Cotton Disease Research Unit, Southern Plains Agricultural Research Center, U.S. Department of Agriculture, College Station, TX, USA
| | - Janusz Zabrocki
- Institute of Organic Chemistry, Lodz University of Technology, Lodz, Poland
- Insect Neuropeptide Lab, Insect Control and Cotton Disease Research Unit, Southern Plains Agricultural Research Center, U.S. Department of Agriculture, College Station, TX, USA
| | - Ronald J Nachman
- Insect Neuropeptide Lab, Insect Control and Cotton Disease Research Unit, Southern Plains Agricultural Research Center, U.S. Department of Agriculture, College Station, TX, USA
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17
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Marciniak P, Witek W, Szymczak M, Pacholska-Bogalska J, Chowański S, Kuczer M, Rosiński G. FMRFamide-Related Peptides Signaling Is Involved in the Regulation of Muscle Contractions in Two Tenebrionid Beetles. Front Physiol 2020; 11:456. [PMID: 32477164 PMCID: PMC7235380 DOI: 10.3389/fphys.2020.00456] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 04/14/2020] [Indexed: 12/24/2022] Open
Abstract
Peptidergic signaling regulates various physiological processes in insects. Neuropeptides are important messenger molecules that act as neurotransmitters, neuromodulators or hormones. Neuropeptides with myotropic properties in insects are known as FMRFamide-like peptides (FaLPs). Here, we describe the myotropic effects of the endogenous FaLPs in the regulation of contractile activity of the heart, ejaculatory duct, oviduct and the hindgut in two beetle species, Tenebrio molitor and Zophobas atratus. A putative receptor was identified in silico in both species. Using RT-PCR these putative FaLPs receptors were found in the various tissues of both beetles, including visceral organs. Analysis of the amino acid sequence of the receptor indicated that it is similar to other insect FaLPs receptors and belongs to G-protein coupled receptors. A synthetic FaLP (NSNFLRFa) found as the bioanalogue of both species demonstrated concentration-dependent and organ-specific myoactive properties. The peptide had species–specific cardioactivity, in that it stimulated Z. atratus heart contractions, while slightly inhibiting that of T. molitor and had mainly myostimulatory effect on the examined visceral organs of both beetle species, with the lowest activity in the ejaculatory duct of these beetles. The peptide was the most active in the hindgut of both species, but only at high concentration of 10–5 M. The results suggest that FaLPs are potent modulators of endogenous contractile activity of the visceral muscles in beetles and may indirectly affect various physiological processes.
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Affiliation(s)
- Paweł Marciniak
- Department of Animal Physiology and Development, Adam Mickiewicz University, Poznań, Poland
| | - Wojciech Witek
- Department of Animal Physiology and Development, Adam Mickiewicz University, Poznań, Poland
| | - Monika Szymczak
- Department of Animal Physiology and Development, Adam Mickiewicz University, Poznań, Poland
| | | | - Szymon Chowański
- Department of Animal Physiology and Development, Adam Mickiewicz University, Poznań, Poland
| | - Mariola Kuczer
- Faculty of Chemistry, University of Wrocław, Wrocław, Poland
| | - Grzegorz Rosiński
- Department of Animal Physiology and Development, Adam Mickiewicz University, Poznań, Poland
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Identification, Localization in the Central Nervous System and Novel Myostimulatory Effect of Allatostatins in Tenebrio molitor Beetle. Int J Mol Sci 2020; 21:ijms21103510. [PMID: 32429155 PMCID: PMC7279042 DOI: 10.3390/ijms21103510] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 05/05/2020] [Accepted: 05/13/2020] [Indexed: 12/26/2022] Open
Abstract
Allatostatins (ASTs) are pleiotropic insect neuropeptides that are potent myoinhibitors of muscle contractions. In this study, we identified and immunolocalized peptides from the MIP/AST and PISCF/AST families in the nervous system of a model beetle, Tenebrio molitor. Neurons containing MIPs were immunolocalized in the brains of adults and the ventral nerve cords of larvae, pupae and imagines of this species as well as in the retrocerebral complex. PISCFs were immunolocalized in the ventral nerve cord of all stages as well as the brain of the adult beetle. Faint signals were also observed in the corpus allatum but not in the corpus cardiacum. The results allowed us to deduce the sequences of three neuropeptides belonging to MIP/ASTs, Tenmo-MIP4—NWGQFGXWa, Tenmo-MIP5—SKWDNFRGSWa and Tenmo-MIP6—EPAWSNLKGIWa, and one peptide from the PISCF/AST family, QSRYXQCYFNPISCX. Furthermore, we showed for the first time myostimulatory action of endogenous MIP/ASTs. Tenmo-MIP5 caused dose-dependent stimulation of the contractile activity of the beetle oviduct muscles, showing a sigmoidal curve up to 81.20% at the 10−8 M concentration, and the EC50 value for the myostimulatory effect of this peptide was 8.50 × 10−12 M. This is the first report of myostimulatory action of an endogenous myoinhibitory peptide in insect muscles.
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Buchberger AR, Vu NQ, Johnson J, DeLaney K, Li L. A Simple and Effective Sample Preparation Strategy for MALDI-MS Imaging of Neuropeptide Changes in the Crustacean Brain Due to Hypoxia and Hypercapnia Stress. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2020; 31:1058-1065. [PMID: 32150406 PMCID: PMC7467133 DOI: 10.1021/jasms.9b00107] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Matrix-assisted laser desorption/ionization (MALDI)-MS imaging has been utilized to image a variety of biomolecules, including neuropeptides. Washing a tissue section is an effective way to eliminate interfering background and improve detection of low concentration target analyte molecules; however, many previous methods have not been tested for neuropeptide analysis via MALDI-MS imaging. Using crustaceans as a neurological model organism, we developed a new, simple washing procedure and applied this method to characterize neuropeptide changes due to hypoxia stress. With a 10 s 50:50 EtOH:H2O wash, neuropeptide coverage was improved by 1.15-fold, while normalized signal intensities were increased by 5.28-fold. Specifically, hypoxia and hypercapnia stress conditions were investigated due to their environmental relevance to marine invertebrates. Many neuropeptides, including RFamides, pyrokinin, and cardioactive peptides, showed distinct up- and down-regulation for specific neuropeptide isoforms. Since crustacean neuropeptides are homologous to those found in humans, results from these studies can be applied to understand potential roles of neuropeptides involved in medical hypoxia and hypercapnia.
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Affiliation(s)
- Amanda R. Buchberger
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706
| | - Nhu Q. Vu
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706
| | - Jillian Johnson
- School of Pharmacy, University of Wisconsin-Madison, 777 Highland Ave, Madison, WI 53705
| | - Kellen DeLaney
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706
| | - Lingjun Li
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706
- School of Pharmacy, University of Wisconsin-Madison, 777 Highland Ave, Madison, WI 53705
- Address reprint requests to: Lingjun Li. Mailing Address: 5125 Rennebohm Hall, 777 Highland Avenue, Madison, WI 53706; Phone: (608)265-8491; Fax: (608)262-5345;
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20
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Buchberger AR, Sauer CS, Vu NQ, DeLaney K, Li L. Temporal Study of the Perturbation of Crustacean Neuropeptides Due to Severe Hypoxia Using 4-Plex Reductive Dimethylation. J Proteome Res 2020; 19:1548-1555. [PMID: 32062973 PMCID: PMC7213666 DOI: 10.1021/acs.jproteome.9b00787] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Hypoxia (i.e., low oxygen (O2) levels) is a common environmental challenge for several aquatic species, including fish and invertebrates. To survive or escape these conditions, these animals have developed novel biological mechanisms, some regulated by neuropeptides. By utilizing mass spectrometry (MS), this study aims to provide a global perspective of neuropeptides in the blue crab, Callinectes sapidus, and their changes over time (0, 1, 4, and 8 h) due to acute, severe hypoxia (∼10% O2 water saturation) stress using a 4-plex reductive dimethylation strategy to increase throughput. Using both electrospray ionization and matrix-assisted laser desorption/ionization (MALDI) MS, this study provides complementary coverage, allowing 88 neuropeptides to be identified. Interesting trends include (1) an overall decrease in neuropeptide expression due to hypoxia exposure, (2) a return to basal levels after 4 or 8 h of exposure following an initial response, (3) changes only after 4+ h exposure, and (4) an oscillating pattern. Overall, this study boosts the power of multiplexed quantitation to understand the large-scale changes due to severe hypoxia stress over time.
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Affiliation(s)
- Amanda R. Buchberger
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706
| | - Christopher S. Sauer
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706
| | - Nhu Q. Vu
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706
| | - Kellen DeLaney
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706
| | - Lingjun Li
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706
- School of Pharmacy, University of Wisconsin-Madison, 777 Highland Ave, Madison, WI 53705
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21
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Yu N, Han C, Liu Z. In silico identification of the neuropeptidome of the pond wolf spider Pardosa pseudoannulata. Gen Comp Endocrinol 2020; 285:113271. [PMID: 31525378 DOI: 10.1016/j.ygcen.2019.113271] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 07/27/2019] [Accepted: 09/12/2019] [Indexed: 01/09/2023]
Abstract
Neuropeptides have been successfully documented in numerous arthropod species via in silico prediction from transcriptomic and genomic data. We recently sequenced the genome and nine transcriptomes of a chelicerate species, the pond wolf spider, Pardosa pseudoannulata. Here 43 neuropeptide families encoded by 87 neuropeptide genes were identified, among which 84 genes were presented with complete open reading frames. The neuropeptide genes often had paralogs and paralogous genes showed different expression profiles in nine transcriptomes. Six crustacean hyperglycemic hormone/ion transport peptide-like (CHH/ITP) genes were predicted and CHH/ITP6 was expressed much higher than the others. Orcokinin 1 and orcokinin 2 genes were both expressed in brain at a similar level. But, interestingly, orcokinin 1 gene was ubiquitously expressed in appendages while orcokinin 2 gene was enriched in venom gland to an extreme extent. The expression profiling of neuropeptide genes offers clues for further functional investigation. Paralogous genes were also found to be clustered at scaffolds such as nine insulin-like peptide genes at three scaffolds and six pyrokinin genes at two scaffolds, indicating a result of local gene duplication. In contrast, the four C-type allatostatin family members were scattered at five scaffolds, different from their closely associated locations reported in many arthropod species including several spiders. The comprehensive inventory of P. pseudoannulata neuropeptides here expands our repository of chelicerate neuropeptides and further promotes our understanding of neuropeptide evolution and functions.
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Affiliation(s)
- Na Yu
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China
| | - Chenyang Han
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China
| | - Zewen Liu
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China.
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Zhang F, Wang J, Thakur K, Hu F, Zhang JG, Jiang XF, An SH, Jiang H, Jiang L, Wei ZJ. Isolation functional characterization of allatotropin receptor from the cotton bollworm, Helicoverpa armigera. Peptides 2019; 122:169874. [PMID: 29198647 DOI: 10.1016/j.peptides.2017.11.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 11/24/2017] [Accepted: 11/27/2017] [Indexed: 12/31/2022]
Abstract
Insect allatotropin (AT) plays multi-functions including regulation of juvenile hormone synthesis, growth, development and reproduction. In the present study, the full-length cDNA encoding the AT receptor was cloned from the brain of Helicoverpa armigera (Helar-ATR). The ORF of Helar-ATR exhibited the characteristic seven transmembrane domains of the G protein-coupled receptor (GPCR) and was close to the ATR of Manduca sexta in the phylogenetic tree. The Helar-ATR expressed in vertebrate cell lines can be activated by Helar-AT and each Helar-ATL in a dose-responsive manner, in the following order: Helar-ATLI > Helar-ATLII > Helar-AT > Helar-ATLIII. Helar-ATLI and Helar-ATLII represented the functional ligands to Helar-ATR in vitro, while Helar-AT and Helar-ATLIII behaved as partial agonists. The in vitro functional analysis suggested that the Helar-ATR signal was mainly coupled with elevated levels of Ca2+ and independent of cAMP levels. Helar-ATR mRNA in larvae showed the highest level in the brain, followed by the thorax ganglion, abdomen ganglion, fat body and midgut. Helar-ATR mRNA levels in the complex of the brain-thoracic-abdomen ganglion on the 2nd day of the larval stage and during later pupal stages were observed to be relatively higher than in the wandering and early pupal stages.
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Affiliation(s)
- Fang Zhang
- School of Food Science and Engineering, Hefei University of Technology, Hefei 230009, China
| | - Jun Wang
- School of Food Science and Engineering, Hefei University of Technology, Hefei 230009, China
| | - Kiran Thakur
- School of Food Science and Engineering, Hefei University of Technology, Hefei 230009, China
| | - Fei Hu
- School of Food Science and Engineering, Hefei University of Technology, Hefei 230009, China
| | - Jian-Guo Zhang
- School of Food Science and Engineering, Hefei University of Technology, Hefei 230009, China
| | - Xing-Fu Jiang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Shi-Hen An
- College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, China
| | - Hongbo Jiang
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400715, China
| | - Li Jiang
- School of Food Science and Engineering, Hefei University of Technology, Hefei 230009, China.
| | - Zhao-Jun Wei
- School of Food Science and Engineering, Hefei University of Technology, Hefei 230009, China.
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Hao K, Tu X, Ullah H, McNeill MR, Zhang Z. Novel Lom-dh Genes Play Potential Role in Promoting Egg Diapause of Locusta migratoria L. Front Physiol 2019; 10:767. [PMID: 31275172 PMCID: PMC6591537 DOI: 10.3389/fphys.2019.00767] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 06/03/2019] [Indexed: 11/18/2022] Open
Abstract
Diapause hormone (DH) neuropeptides in insects are produced by the genes belonging to pban/capa family. Previous studies show that DH contains a conserved sequence of WFGPRXa that plays vital role in diapause regulation of some Lepidopteran species. However, the function of DH in other species is still unknown. In order to expand our understanding of DH function in diapause induction, Lom-pban, Lom-capa, and five candidates DH precursor genes (Lom-dh1, Lom-dh2, Lom-dh3, Lom-dh4, Lom-dh5) of Locusta migratoria L. were subsequently cloned. We identified Lom-dh1 to Lom-dh5 as novel genes that encoded five types (type I–V) of 44 tandem repeats of DH-like neuropeptides, which might promote egg diapause of L. migratoria. To test this hypothesis, we identified four types of eight new neuropeptides encoded by Lom-dh using liquid chromatography–tandem mass spectrometry from the central neuron system of L. migratoria under both short (10:14 L:D) and long (16:8 L:D) photoperiods. Later on, we synthesized four type I DH-like neuropeptides, LDH1, SDH1, LDH2, and SDH2, encoded by Lom-dh2/Lom-dh3 and injected them into fifth instar female locusts. Egg diapause incidences were observed after female oviposition. The four DH-like neuropeptides significantly increased the incidence of egg diapause under the short photoperiod, but the response was absent under the long photoperiod. Injection of dsLom-dh into female adults of L. migratoria under the short photoperiod could inhibit egg diapause, with no response under the long photoperiod. This study identified a new member of pban/capa family being the second example beside Bombyx mori, where the DH showed significant role on maternal induction of diapause.
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Affiliation(s)
- Kun Hao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiongbing Tu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hidayat Ullah
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.,Department of Agriculture, University of Swabi, Khyber Pakhtunkhwa, Pakistan
| | | | - Zehua Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
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24
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Nässel DR, Zandawala M. Recent advances in neuropeptide signaling in Drosophila, from genes to physiology and behavior. Prog Neurobiol 2019; 179:101607. [PMID: 30905728 DOI: 10.1016/j.pneurobio.2019.02.003] [Citation(s) in RCA: 175] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 02/18/2019] [Accepted: 02/28/2019] [Indexed: 12/11/2022]
Abstract
This review focuses on neuropeptides and peptide hormones, the largest and most diverse class of neuroactive substances, known in Drosophila and other animals to play roles in almost all aspects of daily life, as w;1;ell as in developmental processes. We provide an update on novel neuropeptides and receptors identified in the last decade, and highlight progress in analysis of neuropeptide signaling in Drosophila. Especially exciting is the huge amount of work published on novel functions of neuropeptides and peptide hormones in Drosophila, largely due to the rapid developments of powerful genetic methods, imaging techniques and innovative assays. We critically discuss the roles of peptides in olfaction, taste, foraging, feeding, clock function/sleep, aggression, mating/reproduction, learning and other behaviors, as well as in regulation of development, growth, metabolic and water homeostasis, stress responses, fecundity, and lifespan. We furthermore provide novel information on neuropeptide distribution and organization of peptidergic systems, as well as the phylogenetic relations between Drosophila neuropeptides and those of other phyla, including mammals. As will be shown, neuropeptide signaling is phylogenetically ancient, and not only are the structures of the peptides, precursors and receptors conserved over evolution, but also many functions of neuropeptide signaling in physiology and behavior.
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Affiliation(s)
- Dick R Nässel
- Department of Zoology, Stockholm University, Stockholm, Sweden.
| | - Meet Zandawala
- Department of Zoology, Stockholm University, Stockholm, Sweden; Department of Neuroscience, Brown University, Providence, RI, USA.
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25
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Koziol U. Precursors of neuropeptides and peptide hormones in the genomes of tardigrades. Gen Comp Endocrinol 2018; 267:116-127. [PMID: 29935140 DOI: 10.1016/j.ygcen.2018.06.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 06/18/2018] [Accepted: 06/19/2018] [Indexed: 12/20/2022]
Abstract
Tardigrades are a key group for understanding the evolution of the Ecdysozoa, a large clade of molting animals that also includes arthropods and nematodes. However, little is known about most aspects of their basic biology. Neuropeptide and peptide hormone signaling has been extensively studied in arthropods and nematodes (particularly regarding their roles in molting in arthropods), but very little is known about neuropeptide signaling in other ecdysozoans. In this work, different strategies were used to search for neuropeptide and peptide hormone precursors in the genomes of the tardigrades Hypsibius dujardini and Ramazzottius varieornatus. In general, there is a remarkable similarity in the complement of neuropeptides and their sequences between tardigrades and arthropods. The precursors found in tardigrades included homologs of achatin, allatostatins A, B and C, allatotropin, calcitonin, CCHamide, CCRFa, corazonin, crustacean cardioactive peptide, diuretic hormone 31, diuretic hormone 44, ecdysis triggering hormone, eclosion hormone, gonadotropin-releasing hormone (GnRH), GSEFLamide, insulin-like peptides, ion transport peptide, kinin, neuropeptide F, orcokinin, pigment dispersing hormone, proctolin, pyrokinin, RYamide, short neuropeptide F, sulfakinin, tachykinin, trissin and vasopressin. In most cases, homologs of known cognate receptors for each neuropeptide family could only be identified when the precursors were also present in the genome, further supporting their identification. Some neuropeptide precursor genes have undergone several duplications in tardigrades, including allatostatin A and C, corazonin, GnRH, eclosion hormone, sulfakinin and trissin. Furthermore, four novel families of candidate neuropeptide precursors were identified (two of which could also be found in several arthropods). To the best of my knowledge, this work represents the first genome-wide search for neuropeptide precursors in any ecdysozoan species outside arthropods and nematodes, and is a necessary first step towards understanding neuropeptide function in tardigrades.
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Affiliation(s)
- Uriel Koziol
- Sección Biología Celular, Facultad de Ciencias, Universidad de la República, Iguá 4225, CP11400 Montevideo, Uruguay.
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Lubawy J, Marciniak P, Kuczer M, Rosiński G. Myotropic activity of allatostatins in tenebrionid beetles. Neuropeptides 2018; 70:26-36. [PMID: 29776677 DOI: 10.1016/j.npep.2018.05.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 05/07/2018] [Accepted: 05/09/2018] [Indexed: 02/01/2023]
Abstract
Neuropeptides control the functioning of the nervous system of insects, and they are the most diverse signalling molecules in terms of structure and function. Allatostatins are pleiotropic neuropeptides that are considered potent myoinhibitors of muscle contractions in insects. We investigated the effects caused by three distinct allatostatins, Dippu-AST1 (LYDFGL-NH2 from Diploptera punctata), Grybi-MIP1 (GWQDLNGGW-NH2 from Gryllus bimaculatus) and Trica-ASTC (pESRYRQCYFNPISCF-OH from Tribolium castaneum) on contractile activity of the myocardium, oviduct and hindgut of two tenebrionid beetles, Tenebrio molitor and Zophobas atratus. Studies showed that all three peptides exerted myostimulatory effects on the oviduct and hindgut of the beetles, however they did not cause any effect on myocardium. The effects of Dippu-AST1, Grybi-MIP1 and Trica-ASTC were dose-dependent and tissue and species specific. The highest stimulatory effect was caused by Trica-ASTC, showing stimulation of approximately 82% at a 10-12 M concentration and 76% at a 10-11 M concentration for T. molitor and Z. atratus, respectively. The oviduct of T. molitor was more susceptible to allatostatins than that of Z. atratus. Dippu-AST1 showed the maximum stimulating effect at 10-11 M (57%), whereas Grybi-MIP 1 at 10-10 M caused a 41% stimulation. Trica-ASTC, in both species, showed a myostimulatory effect over the whole range of tested concentrations but was most potent at a 10-12 M concentration and caused a 54% and 31.9% increase in the frequency of contractions in the oviduct of T. molitor and Z. atratus, respectively. The results suggest that allatostatins may affect the regulation of egg movement within the oviducts and movement of food in the digestive tract of beetles and do not regulate directly the activity of heart, thus being good candidate compounds in neuropeptides based pest control agents in future research.
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Affiliation(s)
- Jan Lubawy
- Department of Animal Physiology and Development, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznan, Umultowska 89 Str, 61-614 Poznań, Poland.
| | - Paweł Marciniak
- Department of Animal Physiology and Development, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznan, Umultowska 89 Str, 61-614 Poznań, Poland
| | - Mariola Kuczer
- Department of Organic Chemistry, Faculty of Chemistry, Wrocław University, F. Joliot-Curie 14D Str, 50-383 Wrocław, Poland
| | - Grzegorz Rosiński
- Department of Animal Physiology and Development, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznan, Umultowska 89 Str, 61-614 Poznań, Poland
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Pratavieira M, Menegasso ARDS, Esteves FG, Sato KU, Malaspina O, Palma MS. MALDI Imaging Analysis of Neuropeptides in Africanized Honeybee (Apis mellifera) Brain: Effect of Aggressiveness. J Proteome Res 2018; 17:2358-2369. [DOI: 10.1021/acs.jproteome.8b00098] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marcel Pratavieira
- Institute of Biosciences, Department of Biology, Center of the Study of Social Insects, University of São Paulo State (UNESP), Rio Claro, São Paulo 13506-900, Brazil
| | - Anally Ribeiro da Silva Menegasso
- Institute of Biosciences, Department of Biology, Center of the Study of Social Insects, University of São Paulo State (UNESP), Rio Claro, São Paulo 13506-900, Brazil
| | - Franciele Grego Esteves
- Institute of Biosciences, Department of Biology, Center of the Study of Social Insects, University of São Paulo State (UNESP), Rio Claro, São Paulo 13506-900, Brazil
| | - Kenny Umino Sato
- Institute of Biosciences, Department of Biology, Center of the Study of Social Insects, University of São Paulo State (UNESP), Rio Claro, São Paulo 13506-900, Brazil
| | - Osmar Malaspina
- Institute of Biosciences, Department of Biology, Center of the Study of Social Insects, University of São Paulo State (UNESP), Rio Claro, São Paulo 13506-900, Brazil
| | - Mario Sergio Palma
- Institute of Biosciences, Department of Biology, Center of the Study of Social Insects, University of São Paulo State (UNESP), Rio Claro, São Paulo 13506-900, Brazil
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28
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Yeoh JGC, Pandit AA, Zandawala M, Nässel DR, Davies SA, Dow JAT. DINeR: Database for Insect Neuropeptide Research. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2017; 86:9-19. [PMID: 28502574 DOI: 10.1016/j.ibmb.2017.05.001] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 05/03/2017] [Accepted: 05/08/2017] [Indexed: 06/07/2023]
Abstract
Neuropeptides are responsible for regulating a variety of functions, including development, metabolism, water and ion homeostasis, and as neuromodulators in circuits of the central nervous system. Numerous neuropeptides have been identified and characterized. However, both discovery and functional characterization of neuropeptides across the massive Class Insecta has been sporadic. To leverage advances in post-genomic technologies for this rapidly growing field, insect neuroendocrinology requires a consolidated, comprehensive and standardised resource for managing neuropeptide information. The Database for Insect Neuropeptide Research (DINeR) is a web-based database-application used for search and retrieval of neuropeptide information of various insect species detailing their isoform sequences, physiological functionality and images of their receptor-binding sites, in an intuitive, accessible and user-friendly format. The curated data includes representatives of 50 well described neuropeptide families from over 400 different insect species. Approximately 4700 FASTA formatted, neuropeptide isoform amino acid sequences and over 200 records of physiological functionality have been recorded based on published literature. Also available are images of neuropeptide receptor locations. In addition, the data include comprehensive summaries for each neuropeptide family, including their function, location, known functionality, as well as cladograms, sequence alignments and logos covering most insect orders. Moreover, we have adopted a standardised nomenclature to address inconsistent classification of neuropeptides. As part of the H2020 nEUROSTRESSPEP project, the data will be actively maintained and curated, ensuring a comprehensive and standardised resource for the scientific community. DINeR is publicly available at the project website: http://www.neurostresspep.eu/diner/.
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Affiliation(s)
- Joseph G C Yeoh
- Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, G12 8QQ Glasgow, Scotland, UK
| | - Aniruddha A Pandit
- Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, G12 8QQ Glasgow, Scotland, UK
| | - Meet Zandawala
- Department of Zoology, Stockholm University, S-10691 Stockholm, Sweden
| | - Dick R Nässel
- Department of Zoology, Stockholm University, S-10691 Stockholm, Sweden
| | - Shireen-Anne Davies
- Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, G12 8QQ Glasgow, Scotland, UK
| | - Julian A T Dow
- Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, G12 8QQ Glasgow, Scotland, UK.
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C-type allatostatins mimic stress-related effects of alarm pheromone on honey bee learning and memory recall. PLoS One 2017; 12:e0174321. [PMID: 28323874 PMCID: PMC5360335 DOI: 10.1371/journal.pone.0174321] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 03/07/2017] [Indexed: 11/19/2022] Open
Abstract
As honey bee populations worldwide are declining there is an urgent need for a deeper understanding of stress reactivity in these important insects. Our data indicate that stress responses in bees (Apis mellifera L.) may be mediated by neuropeptides identified, on the basis of sequence similarities, as allatostatins (ASTA, ASTC and ASTCC). Effects of allatostatin injection are compared with stress-related changes in learning performance induced by the honeybee alarm pheromone, isopentylacetate (IPA). We find that bees can exhibit two markedly different responses to IPA, with opposing effects on learning behaviour and memory generalisation, and that strikingly similar responses can be elicited by allatostatins, in particular ASTCC. These findings lend support to the hypothesis that allatostatins mediate stress reactivity in honey bees and suggest responses to stress in these insects are state dependent.
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Matsumoto K, Suetsugu Y, Tanaka Y, Kotaki T, Goto SG, Shinoda T, Shiga S. Identification of allatostatins in the brown-winged green bug Plautia stali. JOURNAL OF INSECT PHYSIOLOGY 2017; 96:21-28. [PMID: 27751887 DOI: 10.1016/j.jinsphys.2016.10.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Revised: 09/06/2016] [Accepted: 10/13/2016] [Indexed: 06/06/2023]
Abstract
Juvenile hormone (JH) biosynthesis is inhibited under short-day conditions in the brown-winged green bug Plautia stali. We investigated allatostatic molecules in the brain of P. stali. Methanol brain extracts strongly inhibited JH biosynthesis. The allatostatic activities of the brain extracts were heat stable but gently suppressed by trypsin treatment, indicating that the allatostatic molecules were peptides. Grybi-MIP1, found in Gryllus bimaculatus as an allatostatic molecule, inhibited JH biosynthesis in P. stali. In contrast, peptides such as Dippu-AST2, 8, and 9, found in Diploptera punctata, did not affect JH biosynthesis in P. stali. We found a cDNA sequence encoding a peptide precursor of myoinhibitory peptides (MIPs), which we named Plast-MIP. Three synthetic peptides, AWKDLSKAW-NH2 (Plast-MIP1), GWSDLQSAGW-NH2 (Plast-MIP5), and AADWGSFRGSW-NH2 (Plast-MIP8), deduced from the precursor sequence, showed clear inhibition of JH biosynthesis in P. stali. Analysis by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry and tandem mass spectrometry showed that Plast-MIP8 resides in the brain. Expression of the Plast-MIP mRNA precursor was detected in the brain of insects reared under short- and long-day conditions. These results suggest that Plast-MIP is an allatostatic molecule and that MIPs are synthesized irrespective of photoperiod. To our knowledge, this is the first study to identify Plast-MIP as a functional allatostatin in hemipteran insects.
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Affiliation(s)
- Keiji Matsumoto
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
| | - Yoshitaka Suetsugu
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Ohwashi 1-2, Tsukuba, 305-8634, Japan
| | - Yoshiaki Tanaka
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Ohwashi 1-2, Tsukuba, 305-8634, Japan
| | - Toyomi Kotaki
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Ohwashi 1-2, Tsukuba, 305-8634, Japan
| | - Shin G Goto
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
| | - Tetsuro Shinoda
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Ohwashi 1-2, Tsukuba, 305-8634, Japan
| | - Sakiko Shiga
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan.
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Wende F, Meyering-Vos M, Hoffmann KH. IDENTIFICATION OF THE FGL-AMIDE ALLATOSTATIN GENE OF THE PRIMITIVE TERMITE Mastotermes darwiniensis AND THE WOODROACH Cryptocercus darwini. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2016; 91:88-108. [PMID: 26513739 DOI: 10.1002/arch.21310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Allatostatins with the C-terminal ending Tyr/Phe-Xaa-Phe-Gly-Leu/Ile-amide (FGLa/ASTs) are widespread neuropeptides with multiple functions. The gene encoding the FGLa/AST polypeptide precursor was first isolated from cockroaches and since then could be identified in many insects and crustaceans. With its strictly conserved regions in combination with variable regions the gene seems to be a good candidate for phylogenetic analyses between closely and distantly related species. Here, the structure of the FGLa/AST gene of the most primitive termite, the giant northern termite Mastotermes darwiniensis Froggatt, was identified. The FGLa/AST gene of the woodroach Cryptocercus darwini was also determined. Precursor sequences of both species possess the general organization of dictyopteran FGLa/AST precursors containing 14 putative FGLa/AST peptides. In M. darwiniensis, only 11 out of the 14 FGLa/AST-like peptides possess the C-terminal conserved region Y/FXFGL/I/V/M and four of the putative peptide structures are not followed by a Gly residue that would lead to nonamidated peptides. Phylogenetic analyses show the high degree of similarity of dictyopteran FGLa/AST sequences. The position of termites, nested within the Blattaria, confirms that termites have evolved from primitive cockroaches.
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Affiliation(s)
- Franziska Wende
- Department of Animal Ecology I, University of Bayreuth, Bayreuth, Germany
| | | | - Klaus H Hoffmann
- Department of Animal Ecology I, University of Bayreuth, Bayreuth, Germany
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Urlacher E, Soustelle L, Parmentier ML, Verlinden H, Gherardi MJ, Fourmy D, Mercer AR, Devaud JM, Massou I. Honey Bee Allatostatins Target Galanin/Somatostatin-Like Receptors and Modulate Learning: A Conserved Function? PLoS One 2016; 11:e0146248. [PMID: 26741132 PMCID: PMC4704819 DOI: 10.1371/journal.pone.0146248] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 12/15/2015] [Indexed: 12/21/2022] Open
Abstract
Sequencing of the honeybee genome revealed many neuropeptides and putative neuropeptide receptors, yet functional characterization of these peptidic systems is scarce. In this study, we focus on allatostatins, which were first identified as inhibitors of juvenile hormone synthesis, but whose role in the adult honey bee (Apis mellifera) brain remains to be determined. We characterize the bee allatostatin system, represented by two families: allatostatin A (Apime-ASTA) and its receptor (Apime-ASTA-R); and C-type allatostatins (Apime-ASTC and Apime-ASTCC) and their common receptor (Apime-ASTC-R). Apime-ASTA-R and Apime-ASTC-R are the receptors in bees most closely related to vertebrate galanin and somatostatin receptors, respectively. We examine the functional properties of the two honeybee receptors and show that they are transcriptionally expressed in the adult brain, including in brain centers known to be important for learning and memory processes. Thus we investigated the effects of exogenously applied allatostatins on appetitive olfactory learning in the bee. Our results show that allatostatins modulate learning in this insect, and provide important insights into the evolution of somatostatin/allatostatin signaling.
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Affiliation(s)
- Elodie Urlacher
- Department of Zoology, Dunedin, Otago, New Zealand
- Centre National de la Recherche Scientifique (CNRS), Centre de Recherches sur la Cognition Animale (UMR 5169), Toulouse, France
- Université de Toulouse, UPS Centre de Recherches sur la Cognition Animale (UMR 5169), Toulouse, France
- * E-mail:
| | - Laurent Soustelle
- CNRS, UMR 5203, Institut de Génomique Fonctionnelle, Montpellier, France
- INSERM, U1191, Montpellier, France
- Université de Montpellier, UMR 5203, Montpellier, France
| | - Marie-Laure Parmentier
- CNRS, UMR 5203, Institut de Génomique Fonctionnelle, Montpellier, France
- INSERM, U1191, Montpellier, France
- Université de Montpellier, UMR 5203, Montpellier, France
| | - Heleen Verlinden
- Department of Animal Physiology and Neurobiology, Zoological Institute, KU Leuven, Leuven, Belgium
| | - Marie-Julie Gherardi
- EA 4552 Réceptorologie et ciblage thérapeutique en cancérologie, Université de Toulouse, UPS, Toulouse, France
| | - Daniel Fourmy
- EA 4552 Réceptorologie et ciblage thérapeutique en cancérologie, Université de Toulouse, UPS, Toulouse, France
| | | | - Jean-Marc Devaud
- Centre National de la Recherche Scientifique (CNRS), Centre de Recherches sur la Cognition Animale (UMR 5169), Toulouse, France
- Université de Toulouse, UPS Centre de Recherches sur la Cognition Animale (UMR 5169), Toulouse, France
| | - Isabelle Massou
- Centre National de la Recherche Scientifique (CNRS), Centre de Recherches sur la Cognition Animale (UMR 5169), Toulouse, France
- Université de Toulouse, UPS Centre de Recherches sur la Cognition Animale (UMR 5169), Toulouse, France
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Audsley N, Down RE. G protein coupled receptors as targets for next generation pesticides. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2015; 67:27-37. [PMID: 26226649 DOI: 10.1016/j.ibmb.2015.07.014] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 07/13/2015] [Accepted: 07/17/2015] [Indexed: 06/04/2023]
Abstract
There is an on-going need for the discovery and development of new pesticides due to the loss of existing products through the continuing development of resistance, the desire for products with more favourable environmental and toxicological profiles and the need to implement the principles of integrated pest management. Insect G protein coupled receptors (GPCRs) have important roles in modulating biology, physiology and behaviour, including reproduction, osmoregulation, growth and development. Modifying normal receptor function by blocking or over stimulating its actions may either result in the death of a pest or disrupt its normal fitness or reproductive capacity to reduce pest populations. Hence GPCRs offer potential targets for the development of next generation pesticides providing opportunities to discover new chemistries for invertebrate pest control. Such receptors are important targets for pharmaceutical drugs, but are under-exploited by the agro-chemical industry. The octopamine receptor agonists are the only pesticides with a recognized mode of action, as described in the classification scheme developed by the Insecticide Resistance Action Committee, that act via a GPCR. The availability of sequenced insect genomes has facilitated the characterization of insect GPCRs, but the development and utilization of screening assays to identify lead compounds has been slow. Various studies using knock-down technologies or applying the native ligands and/or neuropeptide analogues to pest insects in vivo, have however demonstrated that modifying normal receptor function can have an insecticidal effect. This review presents examples of potential insect neuropeptide receptors that are potential targets for lead compound development, using case studies from three representative pest species, Tribolium castaneum, Acyrthosiphon pisum, and Drosophila suzukii. Functional analysis studies on T. castaneum suggest that GPCRs involved in growth and development (eclosion hormone, ecdysis triggering hormone and crustacean cardioacceleratory peptide receptors) as well as the dopamine-2 like, latrophilin-like, starry night, frizzled-like, methuselah-like and the smoothened receptors may be suitable pesticide targets. From in vivo studies using native ligands and peptide analogues, receptors which appear to have a role in the regulation of feeding in the pea aphid, such as the PISCF-allatostatin and the various "kinin" receptors, are also potential targets. In Drosophila melanogaster various neuropeptides and their signalling pathways have been studied extensively. This may provide insights into potential pesticide targets that could be exploited in D. suzukii. Examples include the sex peptide receptor, which is involved in reproduction and host seeking behaviours, and those responsible for osmoregulation such as the diuretic hormone receptors. However the neuropeptides and their receptors in insects are often poorly characterized, especially in pest species. Although data from closely related species may be transferable (e.g. D. melanogaster to D. suzukii), peptides and receptors may have different roles in different insects, and hence a target in one insect may not be appropriate in another. Hence fundamental knowledge of the roles and functions of receptors is vital for development to proceed.
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Verlinden H, Gijbels M, Lismont E, Lenaerts C, Vanden Broeck J, Marchal E. The pleiotropic allatoregulatory neuropeptides and their receptors: A mini-review. JOURNAL OF INSECT PHYSIOLOGY 2015; 80:2-14. [PMID: 25982521 DOI: 10.1016/j.jinsphys.2015.04.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 04/17/2015] [Accepted: 04/20/2015] [Indexed: 06/04/2023]
Abstract
Juvenile hormones (JH) are highly pleiotropic insect hormones essential for post-embryonic development. The circulating JH titer in the hemolymph of insects is influenced by enzymatic degradation, binding to JH carrier proteins, uptake and storage in target organs, but evidently also by rates of production at its site of synthesis, the corpora allata (CA). The multiple processes in which JH is involved alongside the critical significance of JH in insect development emphasize the importance for elucidating the control of JH production. Production of JH in CA cells is regulated by different factors: by neurotransmitters, such as dopamine and glutamate, but also by allatoregulatory neuropeptides originating from the brain and axonally transported to the CA where they bind to their G protein-coupled receptors (GPCRs). Different classes of allatoregulatory peptides exist which have other functions aside from acting as influencers of JH production. These pleiotropic neuropeptides regulate different processes in different insect orders. In this mini-review, we will give an overview of allatotropins and allatostatins, and their recently characterized GPCRs with a view to better understand their modes of action and different action sites.
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Affiliation(s)
- Heleen Verlinden
- Research Group of Molecular Developmental Physiology and Signal Transduction, KU Leuven, Naamsestraat 59, 3000 Leuven, Belgium.
| | - Marijke Gijbels
- Research Group of Molecular Developmental Physiology and Signal Transduction, KU Leuven, Naamsestraat 59, 3000 Leuven, Belgium.
| | - Els Lismont
- Research Group of Molecular Developmental Physiology and Signal Transduction, KU Leuven, Naamsestraat 59, 3000 Leuven, Belgium.
| | - Cynthia Lenaerts
- Research Group of Molecular Developmental Physiology and Signal Transduction, KU Leuven, Naamsestraat 59, 3000 Leuven, Belgium.
| | - Jozef Vanden Broeck
- Research Group of Molecular Developmental Physiology and Signal Transduction, KU Leuven, Naamsestraat 59, 3000 Leuven, Belgium.
| | - Elisabeth Marchal
- Research Group of Molecular Developmental Physiology and Signal Transduction, KU Leuven, Naamsestraat 59, 3000 Leuven, Belgium.
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Audsley N, Down RE, Isaac RE. Genomic and peptidomic analyses of the neuropeptides from the emerging pest, Drosophila suzukii. Peptides 2015; 68:33-42. [PMID: 25158078 DOI: 10.1016/j.peptides.2014.08.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 08/15/2014] [Accepted: 08/15/2014] [Indexed: 01/09/2023]
Abstract
Drosophila suzukii is a highly polyphagous invasive pest which has been recently introduced into Europe and North America, where it is causing severe economic losses through larval infestations of stone and berry fruits. The peptidome of the selected nervous tissues of adult D. suzukii was investigated as a first step in identifying potential targets for the development of novel insecticides. Through in silico analyses of the D. suzukii genome databases 28 neuropeptide families, comprising more than 70 predicted peptides were identified. Using a combination of liquid chromatography and mass spectrometry of tissue extracts, 33 predicted peptides, representing 15 different peptide families were identified by their molecular masses and a total of 17 peptide sequences were confirmed by ion fragmentation. A comparison between the peptides and precursors of D. suzukii and D. melanogaster shows they are highly conserved, with differences only identified in the amino acid sequences of the peptides encoded in the FMRFamide, hugin and ecydysis triggering hormone precursors. All other peptides predicted and identified from D. suzukii appear to be identical to those previously characterized from D. melanogaster. Adipokinetic hormone was only identified in the corpus cardiacum, other peptides present included short neuropeptide F, a pyrokinin and myosuppressin, the latter of which was the only peptide identified from the crop nerve bundle. Peptides present in extracts of the brain and/or thoracico-abdominal ganglion included allatostatins, cardioacceleratory peptide 2b, corazonin, extended FMRFamides, pyrokinins, myoinihibitory peptides, neuropeptide-like precursor 1, SIFamide, short neuropeptide F, kinin, sulfakinins and tachykinin related peptides.
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Affiliation(s)
- Neil Audsley
- The Food and Environmental Research Agency, Sand Hutton, York YO41 1LZ, UK.
| | - Rachel E Down
- The Food and Environmental Research Agency, Sand Hutton, York YO41 1LZ, UK
| | - R Elwyn Isaac
- Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK
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Zandawala M, Orchard I. Identification and functional characterization of FGLamide-related allatostatin receptor in Rhodnius prolixus. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2015; 57:1-10. [PMID: 25500190 DOI: 10.1016/j.ibmb.2014.12.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Revised: 11/11/2014] [Accepted: 12/02/2014] [Indexed: 06/04/2023]
Abstract
FGLamide-related ASTs (FGLa/ASTs) are a family of brain/gut peptides with numerous physiological roles, including inhibition of juvenile hormone (JH) biosynthesis by the corpora allata and inhibition of visceral muscle contraction. FGLa/ASTs mediate their effects by binding to a rhodopsin-like G-protein coupled receptor that is evolutionarily related to the vertebrate galanin receptor. Here we determine the cDNA sequence encoding FGLa/AST receptor (FGLa/AST-R) from the Chagas disease vector, Rhodnius prolixus (Rhopr-FGLa/AST-R), determine its spatial expression pattern using quantitative PCR and functionally characterize the receptor using a heterologous assay. Our expression analysis indicates that Rhopr-FGLa/AST-R is highly expressed in the central nervous system. The receptor is also expressed in various peripheral tissues including the dorsal vessel, midgut, hindgut and reproductive tissues of both males and females, suggesting a role in processes associated with feeding and reproduction. The possible involvement of Rhopr-FGLa/ASTs in the inhibition of JH biosynthesis is also implicated due to presence of the receptor transcript in the R. prolixus corpora cardiaca/corpora allata complex. The functional assay showed that various Rhopr-FGLa/ASTs activate the receptor, with EC50 values for the response in the nanomolar range. Moreover, Rhopr-FGLa/AST-R can couple with Gq alpha subunits and cause an increase in intracellular calcium concentration. Lastly, we tested various FGLa/AST analogs in our heterologous assay. These compounds also activated the receptor and thus have the potential to serve as insect growth regulators and aid in pest control.
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Affiliation(s)
- Meet Zandawala
- Department of Biology, University of Toronto Mississauga, Mississauga, Ontario, Canada.
| | - Ian Orchard
- Department of Biology, University of Toronto Mississauga, Mississauga, Ontario, Canada
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Yu N, Smagghe G. CCK(-like) and receptors: structure and phylogeny in a comparative perspective. Gen Comp Endocrinol 2014; 209:74-81. [PMID: 24842717 DOI: 10.1016/j.ygcen.2014.05.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 04/30/2014] [Accepted: 05/02/2014] [Indexed: 02/07/2023]
Abstract
Cholecystokinin (CCK) and gastrin are regulatory peptides in vertebrates. Their homologues are widely present in metazoan animals, in form of cionin in tunicates, neuropeptide-like protein 12 in nematodes and sulfakinin (SK) in arthropods. CCK(-like) peptides exert diverse physiological effects through binding their corresponding receptors, which are important members of the hormone-binding G-protein-coupled receptors. In this paper, CCK(-like) peptides and receptors are reviewed in a comparative way at levels of molecular structure, physiological functions and phylogeny. CCK signalling system is widely involved in the regulation of satiety, gastric acid secretion, pancreatic secretion, anxiety and memory processes in vertebrates. Its counterpart SK in arthropods is also found with similar functions on regulation of satiety and gastrointestinal motility. Co-evolution of peptide and receptor has been recognized through metazoans. The CCK(-like) receptors seem to be evolved from a common ancestor based on the phylogenetic analysis, with species-specific events in arthropods. In addition, tetraploidization has been brought up to study the evolution of receptors. There are 2 receptors in chordates and nematodes, whereas, the number of sulfakinin receptor varies in arthropods from 0 to 2. We discussed here that the presence or absence of the SK signalling system is likely to be related to feeding behaviour.
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Affiliation(s)
- Na Yu
- Department of Crop Protection, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium
| | - Guy Smagghe
- Department of Crop Protection, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium.
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Huang J, Marchal E, Hult EF, Zels S, Vanden Broeck J, Tobe SS. Mode of action of allatostatins in the regulation of juvenile hormone biosynthesis in the cockroach, Diploptera punctata. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2014; 54:61-68. [PMID: 25218044 DOI: 10.1016/j.ibmb.2014.09.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 08/27/2014] [Accepted: 09/02/2014] [Indexed: 06/03/2023]
Abstract
The FGLamide allatostatins (FGL/ASTs) are a family of neuropeptides with pleiotropic functions, including the inhibition of juvenile hormone (JH) biosynthesis, vitellogenesis and muscle contraction. In the cockroach, Diploptera punctata, thirteen FGLa/ASTs and one allatostatin receptor (AstR) have been identified. However, the mode of action of ASTs in regulation of JH biosynthesis remains unclear. Here, we determined the tissue distribution of Dippu-AstR. And we expressed Dippu-AstR in vertebrate cell lines, and activated the receptor with the Dippu-ASTs. Our results show that all thirteen ASTs activated Dippu-AstR in a dose dependent manner, albeit with different potencies. Functional analysis of AstR in multiple cell lines demonstrated that activation of the AstR receptor resulted in elevated levels of Ca(2+) and cAMP, which suggests that Dippu-AstR can act through the Gαq and Gαs protein pathways. The study on the target of AST action reveals that FGL/AST affects JH biosynthesis prior to the entry of acetyl-CoA into the JH biosynthetic pathway.
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Affiliation(s)
- Juan Huang
- Department of Cell and Systems Biology, University of Toronto, Toronto, Canada
| | - Elisabeth Marchal
- Department of Cell and Systems Biology, University of Toronto, Toronto, Canada; Department of Biology, Zoological Institute, KU Leuven, B-3000 Leuven, Belgium
| | - Ekaterina F Hult
- Department of Cell and Systems Biology, University of Toronto, Toronto, Canada
| | - Sven Zels
- Department of Biology, Zoological Institute, KU Leuven, B-3000 Leuven, Belgium
| | - Jozef Vanden Broeck
- Department of Biology, Zoological Institute, KU Leuven, B-3000 Leuven, Belgium
| | - Stephen S Tobe
- Department of Cell and Systems Biology, University of Toronto, Toronto, Canada.
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Tanaka Y, Suetsugu Y, Yamamoto K, Noda H, Shinoda T. Transcriptome analysis of neuropeptides and G-protein coupled receptors (GPCRs) for neuropeptides in the brown planthopper Nilaparvata lugens. Peptides 2014; 53:125-33. [PMID: 23932938 DOI: 10.1016/j.peptides.2013.07.027] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 07/29/2013] [Accepted: 07/31/2013] [Indexed: 10/26/2022]
Abstract
The genes encoding neuropeptides, neurohormones and their putative G-protein coupled receptors were identified in the brown planthopper (BPH), Nilaparvata lugens (Stål) by transcriptome analysis (RNA-seq). Forty-eight candidate genes were found to encode neuropeptides or peptide hormones. These include all known insect neuropeptides and neurohormones, with the exception of neuropeptide-like precursor 2 (NPLP2) and trissin. The gene coding for prothoracicotropic hormone (PTTH) was first identified from hemimetabolous insect. A total of 57 putative neuropeptide GPCR genes were identified and phylogenetic analysis showed most of them to be closely related to insect GPCRs. A notable finding was the occurrence of vertebrate hormone receptors, thyrotropin-releasing hormone receptor (TRHR)-like GPCR and parathyroid hormone receptor (PTHR)-like GPCRs. These results suggest that N. lugens possesses the most comprehensive neuropeptide system yet found in insects. Moreover, our findings demonstrate the power of RNA-seq as a tool for analyzing the neuropeptide-related genes in the absence of whole genome sequence information.
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Affiliation(s)
- Yoshiaki Tanaka
- Insect Growth Regulation Research Unit, Division of Insect Sciences, National Institute of Agribiological Sciences (NIAS), Tsukuba 3058634, Japan.
| | - Yoshitaka Suetsugu
- Insect Genome Research Unit, Agrogenomics Research Center, NIAS, Tsukuba 3058634, Japan
| | - Kimiko Yamamoto
- Insect Genome Research Unit, Agrogenomics Research Center, NIAS, Tsukuba 3058634, Japan
| | - Hiroaki Noda
- Division of Insect Sciences, NIAS, Tsukuba 3058634, Japan
| | - Tetsuro Shinoda
- Insect Growth Regulation Research Unit, Division of Insect Sciences, National Institute of Agribiological Sciences (NIAS), Tsukuba 3058634, Japan
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Vanderveken M, O'Donnell MJ. Effects of diuretic hormone 31, drosokinin, and allatostatin A on transepithelial K⁺ transport and contraction frequency in the midgut and hindgut of larval Drosophila melanogaster. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2014; 85:76-93. [PMID: 24408875 DOI: 10.1002/arch.21144] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Recent studies have identified paracrine and endocrine cells in the midgut of larval Drosophila melanogaster as well as midgut and hindgut receptors for multiple neuropeptides implicated in the control of fluid and ion balance. Although the effects of diuretic factors on fluid secretion by isolated Malpighian tubules of D. melanogaster have been examined extensively, relatively little is known about the effects of such factors on gut peristalsis or ion transport across the gut. We have measured the effects of diuretic hormone 31 (DH31), drosokinin and allatostatin A (AST-A) on both K(+) transport and muscle contraction frequency in the isolated gut of larval D. melanogaster. K(+) absorption across the gut was measured using K(+) -selective microelectrodes and the scanning ion-selective electrode technique. Allatostatin A (AST-A; 1 μM) increased K(+) absorption across the anterior midgut but reduced K(+) absorption across the copper cells and large flat cells of the middle midgut. AST-A strongly inhibited gut contractions in the anterior midgut but had no effect on contractions of the pyloric sphincter induced by proctolin. DH31 (1 μM) increased the contraction frequency in the anterior midgut, but had no effect on K(+) flux across the anterior, middle, or posterior midgut or across the ileum. Drosokinin (1 μM) did not affect either contraction frequency or K(+) flux across any of the gut regions examined. Possible functions of AST-A, DH31, and drosokinin in regulating midgut physiology are discussed.
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Apone F, Ruggiero A, Tortora A, Tito A, Grimaldi MR, Arciello S, Andrenacci D, Di Lelio I, Colucci G. Targeting the diuretic hormone receptor to control the cotton leafworm, Spodoptera littoralis. JOURNAL OF INSECT SCIENCE (ONLINE) 2014; 14:87. [PMID: 25368043 PMCID: PMC4212857 DOI: 10.1093/jis/14.1.87] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Accepted: 11/23/2012] [Indexed: 05/31/2023]
Abstract
The cotton leafworm, Spodoptera littoralis Boisduval (Lepidoptera: Noctuidae), is one of the most devastating pests of crops worldwide. Several types of treatments have been used against this pest, but many of them failed because of the rapid development of genetic resistance in the different insect populations. G protein coupled receptors have vital functions in most organisms, including insects; thus, they are appealing targets for species-specific pest control strategies. Among the insect G protein coupled receptors, the diuretic hormone receptors have several key roles in development and metabolism, but their importance in vivo and their potential role as targets of novel pest control strategies are largely unexplored. With the goal of using DHR genes as targets to control S. littoralis, we cloned a corticotropin-releasing factor-like binding receptor in this species and expressed the corresponding dsRNA in tobacco plants to knock down the receptor activity in vivo through RNA interference. We also expressed the receptor in mammalian cells to study its signaling pathways. The results indicate that this diuretic hormone receptor gene has vital roles in S. littoralis and represents an excellent molecular target to protect agriculturally-important plants from this pest.
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Affiliation(s)
- Fabio Apone
- Arterra BioSci., via Brin 69, 80142 Napoli, Italy
| | - Alessandra Ruggiero
- Arterra BioSci., via Brin 69, 80142 Napoli, Italy Current address: Center for Cardiovascular Genetics, The University of Texas Health Science Center, 6770 Bertner Street, Houston, TX 77030
| | | | | | | | | | - Davide Andrenacci
- Institute of Genetics and Biophysics, CNR, via Castellino 111, 80131 Napoli, Italy
| | - Ilaria Di Lelio
- Department of Entomology and Agricultural Zoology, University of Napoli, via Università 100, 80055 Portici (NA), Italy
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Marciniak P, Szymczak M, Rogalska L, Rosinski G. Developmental and myotropic effects of the Led-NPF-I peptide in tenebrionid beetles. INVERTEBR REPROD DEV 2013. [DOI: 10.1080/07924259.2013.793218] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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43
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Audsley N, Vandersmissen HP, Weaver R, Dani P, Matthews J, Down R, Vuerinckx K, Kim YJ, Vanden Broeck J. Characterisation and tissue distribution of the PISCF allatostatin receptor in the red flour beetle, Tribolium castaneum. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2013; 43:65-74. [PMID: 23085356 DOI: 10.1016/j.ibmb.2012.09.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 09/28/2012] [Accepted: 09/29/2012] [Indexed: 06/01/2023]
Abstract
The insect PISCF/allatostatins (ASTs) are pleiotropic peptides that are involved in the regulation of juvenile hormone biosynthesis, are myoinhibitory on the gut and the heart, and suppress feeding in various insects, but their roles in beetles are poorly understood. To provide further insight into the significance of PISCF/ASTs in beetles, the PISCF/AST receptor from Tribolium castaneum has been characterised and its tissue distribution determined. The biological activity of the T. castaneum PISCF/AST (Trica-AS) was also investigated. The Trica-AS receptor shows high sequence homology to other insect PISCF/AST receptors, which are related to the mammalian somatostatin/opioid receptors, a family of G protein-coupled receptors. The Trica-AS receptor was activated in a dose-dependent manner by both Trica-AS and T. castaneum allatostatin double C (Trica-ASTCC) as well as Manduca sexta-allatostatin (Manse-AS). Other allatoregulatory peptides (a FLG/AST, a MIP/AST and an allatotropin) and somatostatin(14) were inactive on this receptor. Receptor transcript levels in tissues, determined by qRT-PCR, were highest in the head and the gut, with variable amounts in the fat body and reproductive organs. There were measurable differences in receptor levels of the head, fat body and reproductive organs between males and females. There was also a widespread distribution of Trica-AS in various tissues of T. castaneum. The Trica-AS peptide precursor was most abundant in the head and there was a significant difference between levels in the heads and reproductive organs of males and females. Whole mount immunocytochemistry localised Trica-AS in the median and lateral neurosecretory cells of the brain, in the corpus cardiacum and throughout the ventral nerve cord. The peptide was also present in midgut neurosecretory cells, but no immunostaining was detected in the reproductive organs or Malpighian tubules. The widespread distribution of both Trica-AS and its receptor suggest this peptide may have multiple roles in beetles. However, Trica-AS had no effect on the spontaneous contractions of the gut or ovaries of T. castaneum but this peptide did stimulate the release of proteases from the anterior midgut of another beetle, Tenebrio molitor. The activation of the Trica-AS receptor by Trica-ASTCC implies a physiological role for this peptide in beetles, which remains to be identified.
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Affiliation(s)
- Neil Audsley
- The Food and Environment Research Agency, Sand Hutton, York YO41 1LZ, UK.
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Molecular cloning and characterization of three cDNAs encoding allatostatin-like neurosecretory peptides from Pandalopsis japonica. Comp Biochem Physiol B Biochem Mol Biol 2012; 163:334-48. [DOI: 10.1016/j.cbpb.2012.09.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2012] [Revised: 09/03/2012] [Accepted: 09/04/2012] [Indexed: 11/21/2022]
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Marciniak P, Szymczak M, Pacholska-Bogalska J, Audsley N, Kuczer M, Rosiński G. New myotropic and metabotropic actions of pyrokinins in tenebrionid beetles. Gen Comp Endocrinol 2012; 177:263-9. [PMID: 22542898 DOI: 10.1016/j.ygcen.2012.04.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Revised: 04/07/2012] [Accepted: 04/10/2012] [Indexed: 10/28/2022]
Abstract
Pyrokinins are a large family of insect neuropeptides exhibiting pleiotropic activity, but are predominantly myostimulatory hormones. In this study, four pyrokinins Tenmo-PK-1 (HVVNFTPRLa), Tenmo-PK-2 (SPPFAPRLa), Tenmo-PK-3 (HLSPFSPRLa) and Zopat-PK-1 (LPHYPRLa) from the neuro-endocrine system of two tenebrionid beetles, Tenebrio molitor and Zophobas atratus, were tested in homologous bioassays to evaluate their putative myotropic and glycaemic actions. The four investigated bioassays systems (the heart, oviduct, ejaculatory duct and hindgut) revealed species-specific and organ-specific myotropic actions for the pyrokinins tested. In most bioassays with both beetles, the peptides showed myostimulatory properties with different efficacy. However, the T. molitor heart is not sensitive to Tenmo-PK-1, Tenmo-PK-2 and Tenmo-PK-3, and one of the peptides Tenmo-PK-1, is myoinhibitory on the oviduct. Tenmo-PK-2, which is also present in Z. atratus, exerted an inhibitory effect on the contractions of the heart and ejaculatory duct muscles in this beetle. Such myoinhibitory properties of pyrokinins in insects are shown here for the first time. Only one of the peptides tested, Tenmo-PK-2, stimulated a hyperglycaemic response in the haemolymph of larvae of T. molitor and Z. atratus, and this effect suggests a possible additional metabotropic function of this peptide in beetles. The differences in the myotropic and glycaemic responses to pyrokinins suggest that these peptides modulate contractions of muscles from visceral organs and free sugar levels in the haemolymph of the beetles, through complex and species-specific mechanisms.
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Affiliation(s)
- Paweł Marciniak
- Department of Animal Physiology and Development, Adam Mickiewicz University, Poznan, Poland.
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Paluzzi JPV. Anti-diuretic factors in insects: the role of CAPA peptides. Gen Comp Endocrinol 2012; 176:300-8. [PMID: 22226757 DOI: 10.1016/j.ygcen.2011.12.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Revised: 12/13/2011] [Accepted: 12/17/2011] [Indexed: 10/14/2022]
Abstract
Insects have adapted to live in a wide variety of habitats and utilize an array of feeding strategies that present challenges to their ability to maintain osmotic balance. Regardless of the feeding strategy, water and ion levels within the haemolymph (insect blood) are maintained within a narrow range. This homeostasis involves the action of a variety of tissues, but is often chiefly regulated by the excretory system. Until recently, most research on the hormonal control of the excretory tissues has focused on factors known to have diuretic activities. In this mini-review, the current state of knowledge on anti-diuretic factors in insects will be discussed with a particular emphasis on the CAPA peptides in the blood-feeding Chagas' disease vector, Rhodnius prolixus.
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Affiliation(s)
- Jean-Paul V Paluzzi
- Department of Biology, McMaster University, 1280 Main Street West, Hamilton, ON, Canada L8S 4K1.
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Bendena WG, Tobe SS. Families of allatoregulator sequences: a 2011 perspective1This review is part of a virtual symposium on recent advances in understanding a variety of complex regulatory processes in insect physiology and endocrinology, including development, metabolism, cold hardiness, food intake and digestion, and diuresis, through the use of omics technologies in the postgenomic era. CAN J ZOOL 2012. [DOI: 10.1139/z2012-012] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Three different peptide families have been named “allatostatins” (ASTs), based on their initial purifications which were based on their ability to inhibit juvenile hormone (JH) biosynthesis. These include (i) a family of peptides that have a consensus C-terminal sequence Y/FXFGL-NH2; (ii) a family of peptides with a conserved C-terminal sequence W(X)6W-NH2; and(iii) a family of peptides with C-terminal sequence PISCF, some of which are C-terminally-amidated. Each allatostatin family has functions distinct and apart from the inhibition of JH biosynthesis. A peptide family known as the “allatotropins” serve to stimulate JH biosynthesis. This family of peptides also has been proven to exert multiple effects dependent on the species in question. Genome and peptidome projects are uncovering new members of these families and it is clear that these structures are not just confined to Insecta but are found in a range of invertebrates. The receptors for these neuropeptides have been identified and tested experimentally for specific ligand binding. The Y/FXFGLa-ASTs exert their action through galanin-like receptors, W(X)6Wa-ASTs through a sex peptide-binding receptor, and PISCF-ASTs through somatostatin-like receptors. These receptors are conserved through evolutionary time and are being identified in numerous invertebrates by way of genome projects.
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Affiliation(s)
- William G. Bendena
- Department of Biology and Centre for Neurosciences, Queen’s University, Kingston, ON K7L 3N6, Canada
| | - Stephen S. Tobe
- Cell and Systems Biology, University of Toronto, Toronto, ON M5S 3G5, Canada
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Spit J, Badisco L, Verlinden H, Van Wielendaele P, Zels S, Dillen S, Vanden Broeck J. Peptidergic control of food intake and digestion in insects 1This review is part of a virtual symposium on recent advances in understanding a variety of complex regulatory processes in insect physiology and endocrinology, including development, metabolism, cold hardiness, food intake and digestion, and diuresis, through the use of omics technologies in the postgenomic era. CAN J ZOOL 2012. [DOI: 10.1139/z2012-014] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Like all heterotrophic organisms, insects require a strict control of food intake and efficient digestion of food into nutrients to maintain homeostasis and to fulfill physiological tasks. Feeding and digestion are steered by both external and internal signals that are transduced by a multitude of regulatory factors, delivered either by neurons innervating the gut or mouthparts, or by midgut endocrine cells. The present review gives an overview of peptide regulators known to control feeding and digestion in insects. We describe the discovery and functional role in these processes for insect allatoregulatory peptides, diuretic hormones, FMRFamide-related peptides, (short) neuropeptide F, proctolin, saliva production stimulating peptides, kinins, and tachykinins. These peptides control either gut myoactivity, food intake, and (or) release of digestive enzymes. Some peptides exert their action at multiple levels, possibly having a biological function that depends on their site of delivery. Many regulatory peptides have been physically extracted from different insect species. However, multiple peptidomics, proteomics, transcriptomics, and genome sequencing projects have led to increased discovery and prediction of peptide (precursor) and receptor sequences. In combination with physiological experiments, these large-scale projects have already led to important steps forward in unraveling the physiology of feeding and digestion in insects.
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Affiliation(s)
- J. Spit
- Department of Animal Physiology and Neurobiology, Zoological Institute, KU Leuven, Naamsestraat 59, B-3000 Leuven, Belgium
| | - L. Badisco
- Department of Animal Physiology and Neurobiology, Zoological Institute, KU Leuven, Naamsestraat 59, B-3000 Leuven, Belgium
| | - H. Verlinden
- Department of Animal Physiology and Neurobiology, Zoological Institute, KU Leuven, Naamsestraat 59, B-3000 Leuven, Belgium
| | - P. Van Wielendaele
- Department of Animal Physiology and Neurobiology, Zoological Institute, KU Leuven, Naamsestraat 59, B-3000 Leuven, Belgium
| | - S. Zels
- Department of Animal Physiology and Neurobiology, Zoological Institute, KU Leuven, Naamsestraat 59, B-3000 Leuven, Belgium
| | - S. Dillen
- Department of Animal Physiology and Neurobiology, Zoological Institute, KU Leuven, Naamsestraat 59, B-3000 Leuven, Belgium
| | - J. Vanden Broeck
- Department of Animal Physiology and Neurobiology, Zoological Institute, KU Leuven, Naamsestraat 59, B-3000 Leuven, Belgium
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Robertson L, Rodriguez EP, Lange AB. The neural and peptidergic control of gut contraction in Locusta migratoria: the effect of an FGLa/AST. J Exp Biol 2012; 215:3394-402. [DOI: 10.1242/jeb.073189] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Summary
The regulation of insect gut physiology is complex and involves the interactions of a number of mechanisms, including the neural regulation of gut contraction by altering neural input and the modulation of gut contractions by neuropeptides directly affecting the muscle. The FGLa-type allatostatins (FGLa/ASTs) are known brain/gut peptides with numerous physiological roles, including modulation of gut contraction and neural input. To further investigate the pleiotropic roles of FGLa/AST peptides in Locusta migratoria, we have examined the role of a locust FGLa/AST (Scg-AST-6) in the gut. Proctolin and Scg-AST-6 have opposing effects on gut contraction, where proctolin dose-dependently increases gut muscle tension, while Scg-AST-6 inhibits both muscle tension and spontaneous and neurogenic contractions in a dose-dependent manner. Results from neurophysiological recordings indicate that there may be a central pattern generator (CPG) within the ventricular ganglia regulated by descending inhibition, and the addition of Scg-AST-6 dose-dependently modulates this ventricular ganglion CPG. This work provides a comprehensive picture of how FGLa/ASTs may modulate and coordinate each region of the locust gut, and shows that FGLa/ASTs have both central effects, on the ventricular ganglion CPG, and peripheral effects on the gut muscle. Overall, this work shows how FGLa/ASTs contribute to the complex regulation and fine tuning of gut contraction.
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50
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Bennani-Baiti B, Bennani-Baiti IM. Gene symbol precision. Gene 2012; 491:103-9. [DOI: 10.1016/j.gene.2011.09.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Revised: 09/21/2011] [Accepted: 09/29/2011] [Indexed: 11/26/2022]
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