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Chen Y, Zhang Y, Xun X, Ma Y, Liu Y, Wang Q. Homologous Design and Three-Dimensional Quantitative Structure-Activity Relationship Study of Acaricidal 2,4-Diphenyloxazolines Containing Different Heteroatoms and Alkyl Chains. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:13431-13438. [PMID: 38815265 DOI: 10.1021/acs.jafc.4c01101] [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: 06/01/2024]
Abstract
In order to speculate the three-dimensional structure of the potential binding pocket of the chitin synthase inhibitor, a series of 2,4-diphenyloxazoline derivatives with different lengths of alkyl chains and heteroatoms were designed and synthesized by a homologous strategy. The bioassay results indicate that both the length of the alkyl chains and the type of substituents can affect the acaricidal activity against mite eggs. Compounds containing chloropropyl, alkoxyalkyl, and para-substituted phenoxyalkyl or phenylthioalkyl groups exhibit good activity, while those containing steric hindrance substituents or carbonyl substituents on the benzene ring exhibit reduced activity. Three-dimensional quantitative structure-activity relationship (3D-QSAR) study showed that there may be a narrow hydrophobic region deep in the pocket, and the steric effect plays a more important role than the electrostatic effect. The current work will provide assistance for future molecular design and target binding research.
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Affiliation(s)
- Yuming Chen
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Frontiers Science Center for New Organic Matter, Tianjin 300071, China
| | - Yu Zhang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Frontiers Science Center for New Organic Matter, Tianjin 300071, China
| | - Xiwei Xun
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Frontiers Science Center for New Organic Matter, Tianjin 300071, China
| | - Yi Ma
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Frontiers Science Center for New Organic Matter, Tianjin 300071, China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Frontiers Science Center for New Organic Matter, Tianjin 300071, China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Frontiers Science Center for New Organic Matter, Tianjin 300071, China
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2
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Unuofin JO, Odeniyi OA, Majengbasan OS, Igwaran A, Moloantoa KM, Khetsha ZP, Iwarere SA, Daramola MO. Chitinases: expanding the boundaries of knowledge beyond routinized chitin degradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:38045-38060. [PMID: 38789707 DOI: 10.1007/s11356-024-33728-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 05/15/2024] [Indexed: 05/26/2024]
Abstract
Chitinases, enzymes that degrade chitin, have long been studied for their role in various biological processes. They play crucial roles in the moulting process of invertebrates, the digestion of chitinous food, and defense against chitin-bearing pathogens. Additionally, chitinases are involved in physiological functions in crustaceans, such as chitinous food digestion, moulting, and stress response. Moreover, chitinases are universally distributed in organisms from viruses to mammals and have diverse functions including tissue degradation and remodeling, nutrition uptake, pathogen invasion, and immune response regulation. The discovery of these diverse functions expands our understanding of the biological significance and potential applications of chitinases. However, recent research has shown that chitinases possess several other functions beyond just chitin degradation. Their potential as biopesticides, therapeutic agents, and tools for bioremediation underscores their significance in addressing global challenges. More importantly, we noted that they may be applied as bioweapons if ethical regulations regarding production, engineering and application are overlooked.
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Affiliation(s)
- John Onolame Unuofin
- Sustainable Energy and Environment Research Group (SEERG), Department of Chemical Engineering, Faculty of Engineering, Built Environment and Information Technology, University of Pretoria, Private bag X20 Hatfield, Pretoria, 0028, South Africa.
| | | | | | - Aboi Igwaran
- The Life Science Center Biology, School of Sciences and Technology, Örebro University, 701 82, Örebro, Sweden
| | - Karabelo MacMillan Moloantoa
- Department of Microbiology, School of Life Sciences, College of Agriculture, Engineering and Science, University of Kwazulu Natal, Private Bag X540001, Durban, 4000, South Africa
| | - Zenzile Peter Khetsha
- Department of Agriculture, Central University of Technology, Free State, Private Bag X20539, Bloemfontein, 9300, South Africa
| | - Samuel Ayodele Iwarere
- Sustainable Energy and Environment Research Group (SEERG), Department of Chemical Engineering, Faculty of Engineering, Built Environment and Information Technology, University of Pretoria, Private bag X20 Hatfield, Pretoria, 0028, South Africa
| | - Michael Olawale Daramola
- Sustainable Energy and Environment Research Group (SEERG), Department of Chemical Engineering, Faculty of Engineering, Built Environment and Information Technology, University of Pretoria, Private bag X20 Hatfield, Pretoria, 0028, South Africa
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3
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Liang P, Li J, Chen W, Zhou H, Lai X, Li J, Xu Z, Yang Q, Zhang J. Design of Inhibitors Targeting Chitin-Degrading Enzymes by Bioisostere Substitutions and Scaffold Hopping for Selective Control of Ostrinia furnacalis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:10794-10804. [PMID: 38711396 DOI: 10.1021/acs.jafc.4c00161] [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: 05/08/2024]
Abstract
Chitin-degrading enzymes are critical components in regulating the molting process of the Asian corn borer and serve as potential targets for controlling this destructive pest of maize. Here, we used a scaffold-hopping strategy to design a series of efficient naphthylimide insecticides. Among them, compound 8c exhibited potent inhibition of chitinase from OfChi-h and OfChtI at low nanomolar concentrations (IC50 = 1.51 and 9.21 nM, respectively). Molecular docking simulations suggested that 8c binds to chitinase by mimicking the interaction of chitin oligosaccharide substrates with chitinase. At low ppm concentrations, compound 8c performed comparably to commercial insecticides in controlling the highly destructive plant pest, the Asian corn borer. Tests on a wide range of nontarget organisms indicate that compound 8c has very low toxicity. In addition, the effect of inhibitor treatment on the expression of genes associated with the Asian corn borer chitin-degrading enzymes was further investigated by quantitative real-time polymerase chain reaction. In conclusion, our study highlights the potential of 8c as a novel chitinase-targeting insecticide for effective control of the Asian corn borer, providing a promising solution in the quest for sustainable pest management.
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Affiliation(s)
- Peibo Liang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P. R. China
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Key Laboratory of Synthetic Biology, Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangdong 518000, China
| | - Jianyang Li
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P. R. China
| | - Wei Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection and Shenzhen Agricultural Genome Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Hong Zhou
- Institute of Pesticide Science, College of Plant Protection, Southwest University, Chongqing 400715, P. R. China
| | - Xiangning Lai
- Institute of Pesticide Science, College of Plant Protection, Southwest University, Chongqing 400715, P. R. China
| | - Jingmin Li
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P. R. China
| | - Zhiyuan Xu
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P. R. China
| | - Qing Yang
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Key Laboratory of Synthetic Biology, Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangdong 518000, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection and Shenzhen Agricultural Genome Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Jianjun Zhang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P. R. China
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Guo B, Chen L, Luo S, Wang C, Feng Y, Li X, Cao C, Zhang L, Yang Q, Zhang X, Yang X. A Potential Multitarget Insect Growth Regulator Candidate: Design, Synthesis, and Biological Activity of Novel Acetamido Derivatives Containing Hexacyclic Pyrazole Carboxamides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:10271-10281. [PMID: 38655868 DOI: 10.1021/acs.jafc.4c00312] [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: 04/26/2024]
Abstract
Insect growth regulators (IGRs) are important green insecticides that disrupt normal growth and development in insects to reduce the harm caused by pests to crops. The ecdysone receptor (EcR) and three chitinases OfChtI, OfChtII, and OfChi-h are closely associated with the molting stage of insects. Thus, they are considered promising targets for the development of novel insecticides such as IGRs. Our previous work identified a dual-target compound 6j, which could act simultaneously on both EcR and OfChtI. In the present study, 6j was first found to have inhibitory activities against OfChtII and OfChi-h, too. Subsequently, taking 6j as a lead compound, 19 novel acetamido derivatives were rationally designed and synthesized by introducing an acetamido moiety into the amide bridge based on the flexibility of the binding cavities of 6j with EcR and three chitinases. Then, their insecticidal activities against Plutella xylostella (P. xylostella), Ostrinia furnacalis (O. furnacalis), and Spodoptera frugiperda (S. frugiperda) were carried out. The bioassay results revealed that most of these acetamido derivatives possessed moderate to good larvicidal activities against three lepidopteran pests. Especially, compound I-17 displayed excellent insecticidal activities against P. xylostella (LC50, 93.32 mg/L), O. furnacalis (LC50, 114.79 mg/L), and S. frugiperda (86.1% mortality at 500 mg/L), significantly better than that of 6j. In addition, further protein validation and molecular docking demonstrated that I-17 could act simultaneously on EcR (17.7% binding activity at 8 mg/L), OfChtI (69.2% inhibitory rate at 50 μM), OfChtII (71.5% inhibitory rate at 50 μM), and OfChi-h (73.9% inhibitory rate at 50 μM), indicating that I-17 is a potential lead candidate for novel multitarget IGRs. This work provides a promising starting point for the development of novel types of IGRs as pest management agents.
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Affiliation(s)
- Bingbo Guo
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Lei Chen
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, No 97 Buxin Road, Shenzhen 518120, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Shihui Luo
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Chunying Wang
- Engineering Research Center of Plant Growth Regulator, Ministry of Education & College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Yanjiao Feng
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Xiaoyang Li
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Congwang Cao
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Li Zhang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Qing Yang
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, No 97 Buxin Road, Shenzhen 518120, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xiaoming Zhang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Xinling Yang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
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Pereira V, Figueira O, Castilho PC. Flavonoids as Insecticides in Crop Protection-A Review of Current Research and Future Prospects. PLANTS (BASEL, SWITZERLAND) 2024; 13:776. [PMID: 38592833 PMCID: PMC10975847 DOI: 10.3390/plants13060776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 03/05/2024] [Accepted: 03/08/2024] [Indexed: 04/11/2024]
Abstract
Pesticide overuse in agricultural systems has resulted in the development of pest resistance, the impoverishment of soil microbiota, water pollution, and several human health issues. Nonetheless, farmers still depend heavily on these agrochemicals for economically viable production, given the high frequency at which crops are affected by pests. Phytopathogenic insects are considered the most destructive pests on crops. Botanical pesticides have gained attention as potential biopesticides and complements to traditional pesticides, owing to their biodegradability and low toxicity. Plant-based extracts are abundant in a wide variety of bioactive compounds, such as flavonoids, a class of polyphenols that have been extensively studied for this purpose because of their involvement in plant defense responses. The present review offers a comprehensive review of current research on the potential of flavonoids as insecticides for crop protection, addressing the modes and possible mechanisms of action underlying their bioactivity. The structure-activity relationship is also discussed. It also addresses challenges associated with their application in pest and disease management and suggests alternatives to overcome these issues.
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Affiliation(s)
| | | | - Paula C. Castilho
- CQM—Centro de Química da Madeira, Universidade da Madeira, Campus da Penteada, 9200-105 Funchal, Portugal
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Zou R, Li X, Jiang X, Shi D, Han Q, Duan H, Yang Q. Novel Butenolide Derivatives as Dual-Chitinase Inhibitors to Arrest the Growth and Development of the Asian Corn Borer. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:5036-5046. [PMID: 38377548 DOI: 10.1021/acs.jafc.3c06714] [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: 02/22/2024]
Abstract
OfChtI and OfChi-h are considered potential targets for the control of Asian corn borer (Ostrinia furnacalis). In this work, the previously reported OfChtI inhibitor 5f was found to show certain inhibitory activity against OfChi-h (Ki = 5.81 μM). Two series of novel butenolide derivatives based on lead compound 5f were designed with the conjugate skeleton, contributing to the π-binding interaction to chitinase, and then synthesized. Compounds 4a-l and 7a-p displayed excellent inhibitory activities against OfChtI and OfChi-h, respectively, at a concentration of 10 μM. Compound 4h was found to be a good dual-Chitinase inhibitor, with Ki values of 1.82 and 2.00 μM against OfChtI and OfChi-h, respectively. The inhibitory mechanism studies by molecular docking suggested that π-π stacking interactions were crucial to the inhibitory activity of novel butenolide derivatives against two different chitinases. A preliminary bioassay indicated that 4h exhibited certain growth inhibition effects against O. furnacalis. Butenolide-like analogues should be further studied as promising novel dual-chitinase inhibitor candidates for the control of O. furnacalis.
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Affiliation(s)
- Renxuan Zou
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
- Key Laboratory of National Forestry and Grassland Administration on Pest Chemical Control, Beijing 100193, People's Republic of China
| | - Xiang Li
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
- Key Laboratory of National Forestry and Grassland Administration on Pest Chemical Control, Beijing 100193, People's Republic of China
| | - Xi Jiang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
- Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangdong, 518120, People's Republic of China
| | - Dongmei Shi
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
- Key Laboratory of National Forestry and Grassland Administration on Pest Chemical Control, Beijing 100193, People's Republic of China
| | - Qing Han
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
- Key Laboratory of National Forestry and Grassland Administration on Pest Chemical Control, Beijing 100193, People's Republic of China
| | - Hongxia Duan
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
- Key Laboratory of National Forestry and Grassland Administration on Pest Chemical Control, Beijing 100193, People's Republic of China
| | - Qing Yang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
- Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangdong, 518120, People's Republic of China
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7
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Zhang R, Liu W, Zhang Z. miR-306-5p is involved in chitin metabolism in Aedes albopictus pupae via linc8338-miR-306-5p-XM_019678125.2 axis. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2024; 200:105811. [PMID: 38582583 DOI: 10.1016/j.pestbp.2024.105811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 01/31/2024] [Accepted: 02/02/2024] [Indexed: 04/08/2024]
Abstract
Aedes albopictus can transmit several lethal arboviruses. This mosquito has become a sever public health threat due to its rapidly changing global distribution. Chitin, which is the major component of the cuticle and peritrophic membrane (PM), is crucial for the growth and development of insect. microRNAs (miRNAs) play important roles in the posttranscriptional level regulation of gene expression, thereby influencing many biological processes in insects. In this study, an attempt was made to evaluate the role of miR-306-5p in regulating chitin metabolism in Ae. albopictus pupae. Overexpression of miR-306-5p resulted in a significantly reduced survival rate in pupae and an increased malformation rate in adults. Both in vivo and in vitro evidence confirmed the presence of the competing endogenous RNA (ceRNA) regulatory axis (linc8338-miR-306-5p-XM_019678125.2). RNAi of linc8338 and XM_019678125.2 had effects on pupae similar to those of miR-306-5p. The highest expression level of miR-306-5p was found in the midgut, and alteration in the expression of miR-306-5p, XM_019678125.2 and linc8338 induced increased transcript levels of chitin synthase 2 (AaCHS2) and decreased chitinase 10 (AaCht10); as well as increased thickness of the midgut and enlarged midgut epithelial cells. The results of this study highlight the potential of miR-306-5p as a prospective target in mosquito control and confirm that the ceRNA mechanism is involved in chitin metabolism. These findings will provide a basis for further studies to uncover the molecular mechanisms through which ncRNAs regulate chitin metabolism.
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Affiliation(s)
- Ruiling Zhang
- School of Clinical and Basic Medical Science, Shandong First Medical University (Shandong Academy of Medical Sciences), Jinan 250117, China; School of Laboratory Animal & Shandong Laboratory Animal Center, Shandong First Medical University (Shandong Academy of Medical Sciences), Jinan 250117, China.
| | - Wenjuan Liu
- School of Clinical and Basic Medical Science, Shandong First Medical University (Shandong Academy of Medical Sciences), Jinan 250117, China
| | - Zhong Zhang
- School of Clinical and Basic Medical Science, Shandong First Medical University (Shandong Academy of Medical Sciences), Jinan 250117, China.
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Mapuranga J, Chang J, Li H, Zhang Y, Li R, Song L, Zhang N, Yang W. The molecular structure, biological roles, and inhibition of plant pathogenic fungal chitin deacetylases. FRONTIERS IN PLANT SCIENCE 2024; 14:1335646. [PMID: 38264029 PMCID: PMC10803567 DOI: 10.3389/fpls.2023.1335646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 12/18/2023] [Indexed: 01/25/2024]
Abstract
Chitin/polysaccharide deacetylases belong to the carbohydrate esterases family 4 (CE4 enzymes). They play a crucial role in modifying the physiochemical characteristics of structural polysaccharides and are also involved in a wide range of biological processes such as fungal autolysis, spore formation, cell wall formation and integrity, and germling adhesion. These enzymes are mostly common in fungi, marine bacteria, and a limited number of insects. They facilitate the deacetylation of chitin which is a structural biopolymer that is abundantly found in fungal cell walls and spores and also in the cuticle and peritrophic matrices of insects. The deacetylases exhibit specificity towards a substrate containing a sequence of four GlcNAc units, with one of these units being subjected to deacetylation. Chitin deacetylation results in the formation of chitosan, which is a poor substrate for host plant chitinases, therefore it can suppress the host immune response triggered by fungal pathogens and enhance pathogen virulence and colonization. This review discusses plant pathogenic fungal chitin/polysaccharide deacetylases including their structure, substrate specificity, biological roles and some recently discovered chitin deacetylase inhibitors that can help to mitigate plant fungal diseases. This review provides fundamental knowledge that will undoubtedly lead to the rational design of novel inhibitors that target pathogenic fungal chitin deacetylases, which will also aid in the management of plant diseases, thereby safeguarding global food security.
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Affiliation(s)
| | | | | | | | | | | | | | - Wenxiang Yang
- College of Plant Protection, Technological Innovation Center for Biological Control of Plant Diseases and Insect Pests of Hebei Province, Hebei Agricultural University, Baoding, China
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Han Q, Wu N, Zhang J, Feng T, Zi Y, Zhang R, Zou R, Liu Y, Yang Q, Duan H. Discovery of Rhodanine Inhibitors Targeting Of ChtI Based on the π-Stacking Effect and Aqueous Solubility. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:18685-18695. [PMID: 38006338 DOI: 10.1021/acs.jafc.3c05287] [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: 11/27/2023]
Abstract
The application of some reported inhibitors against the chitinolytic enzyme Of ChtI was limited due to their unsatisfactory insecticidal activities. Hence, we first performed a synergetic design strategy combining the π-stacking effect with aqueous solubility to find novel rhodanine analogues with inhibitory activities against Of ChtI. Novel rhodanine compounds IAa-f and IBa-f have weak aqueous solubility, but they (IAd: Ki = 4.0 μM; IBd: Ki = 2.2 μM) showed better inhibitory activities against Of ChtI and comparable insecticidal efficiency toward Ostrinia furnacalis compared to the high aqueous solubility compounds IIAa-f and IIBa-f (IIAd: Ki = 21.6 μM; IIBd: Ki = 14.3 μM) without a large conjugate plane. Further optimized compounds IIIAa-j with a conjugate plane as well as a higher aqueous solubility exhibited similar good inhibitory activities against Of ChtI (IIIAe: Ki = 2.4 μM) and better insecticidal potency (IIIAe: mortality rate of 63.33%) compared to compounds IAa-f and IBa-f, respectively. Molecular docking studies indicated that the conjugate planarity with the π-stacking effect for rhodanine analogues is responsible for their enzyme inhibitory activity against Of ChtI. This study provides a new strategy for designing insect chitinolytic enzyme inhibitors as insect growth regulators for pest control.
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Affiliation(s)
- Qing Han
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
- Key Laboratory of National Forestry and Grassland Administration on Pest Chemical Control, Beijing 100193, People's Republic of China
| | - Nan Wu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
- Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangdong 518120, People's Republic of China
| | - Jingyu Zhang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
- Key Laboratory of National Forestry and Grassland Administration on Pest Chemical Control, Beijing 100193, People's Republic of China
| | - Tianyu Feng
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
- Key Laboratory of National Forestry and Grassland Administration on Pest Chemical Control, Beijing 100193, People's Republic of China
| | - Yunjiang Zi
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
- Key Laboratory of National Forestry and Grassland Administration on Pest Chemical Control, Beijing 100193, People's Republic of China
| | - Rulei Zhang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
- Key Laboratory of National Forestry and Grassland Administration on Pest Chemical Control, Beijing 100193, People's Republic of China
| | - Renxuan Zou
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
- Key Laboratory of National Forestry and Grassland Administration on Pest Chemical Control, Beijing 100193, People's Republic of China
| | - Yaoyang Liu
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
- Key Laboratory of National Forestry and Grassland Administration on Pest Chemical Control, Beijing 100193, People's Republic of China
| | - Qing Yang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
- Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangdong 518120, People's Republic of China
| | - Hongxia Duan
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
- Key Laboratory of National Forestry and Grassland Administration on Pest Chemical Control, Beijing 100193, People's Republic of China
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Li F, Zhao Z, Chen W, Liu R, Lu H, Dong Y, Yang Q, Zhang J. Design, Synthesis, and Biological Investigations of Novel Carbamoylguanidinyl Nitrobenzoxadiazoles against Chitinolytic Enzymes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:18333-18344. [PMID: 37967522 DOI: 10.1021/acs.jafc.3c06157] [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: 11/17/2023]
Abstract
Chitinase has been identified as an important target for insecticides. In this study, a series of novel chitinase inhibitors was designed and synthesized with nitrobenzoxadiazoles. Compound 8d, which contains the N-methylcarbamoylguanidinyl, exhibited high enzyme inhibitory activity and achieved nanomolar inhibition against OfChtI (IC50 = 12.3 nM). Delightfully, it was also found to possess significant inhibitory activity against OfHex1 (IC50 = 1.76 μM). The computational simulation results indicated that compound 8d interacted with OfChtI and OfHex1 in similar modes through hydrogen bonds and hydrophobic and π-π interactions. Insecticidal activity studies revealed that compound 8d showed high mortality against the Lepidoptera Plutella xylostella (mortality rate = 81%) at 200 mg/L. Toxicity studies indicated that compound 8d exhibited negligible toxicity to the natural enemy Trichogramma ostriniae. These results indicate that compound 8d may be a promising candidate for the development of environmentally friendly chitinase inhibitors. Moreover, this study provides a new angle for the design of innovative inhibitors of chitinolytic enzymes.
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Affiliation(s)
- Fang Li
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Zhixiang Zhao
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Wei Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection and Shenzhen Agricultural Genome Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
| | - Ruiyuan Liu
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Huizhe Lu
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Yanhong Dong
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Qing Yang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection and Shenzhen Agricultural Genome Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
| | - Jianjun Zhang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
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11
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Zhang R, Liu W, Fu J, Zhang Z. MicroRNA-989 controls Aedes albopictus pupal-adult transition process by influencing cuticle chitin metabolism in pupae. Parasit Vectors 2023; 16:397. [PMID: 37919799 PMCID: PMC10623821 DOI: 10.1186/s13071-023-05976-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 09/21/2023] [Indexed: 11/04/2023] Open
Abstract
BACKGROUND Aedes albopictus is a vector of numerous devastating arboviruses and places heavy burdens on global public health. Chitin is one of the important components of cuticles and targeting chitin metabolism is a promising strategy for preventing mosquito dispersal and mosquito-borne diseases. Increasing evidence suggests that microRNAs (miRNAs) play crucial roles in various physiological processes of insects. METHODS A previous analysis suggested that the microRNA miR-989 is potentially involved in chitin metabolism in Ae. albopictus pupae. In the present study, we found that the expression level of miR-989 was significantly overexpressed after injection of agomir. A dual-luciferase assay was used to determine the direct target of miR-989. Survival rate, eclosion rate and malformation rate were statistically analyzed to evaluate the potential effect of miR-989. Hematoxylin-eosin staining and chitin staining were used to evaluate the microstructural changes in the cuticles of Ae. albopictus pupae. RESULTS Overexpression of miR-989 resulted in a significantly reduced survival rate and eclosion rate of pupae and an elevated malformation rate of adults. The results suggested that miR-989 acted as a regulator of chitin metabolism in Ae. albopictus pupae by affecting the transcript levels of the Ae. albopictus genes encoding chitin synthase 1 (AaCHS1) and chitinase 10 (AaCht10). The altered expression levels of the two chitin metabolism-related enzymes (CHS1 and Cht10, respectively) caused the structural changes in cuticles and further affected the pupal-adult transition process of Ae. albopictus. XM_029863591.1 was proven to be the target gene of miR-989 and displayed similar effects on pupae as miR-989. CONCLUSIONS The microRNA miR-989 was found to be essential for chitin metabolism in old and new cuticles of Ae. albopictus pupae. The results of the current study suggested that miR-989 could be used as a potential target to control Ae. albopictus.
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Affiliation(s)
- Ruiling Zhang
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250000, China.
- School of Clinical and Basic Medical Science, Shandong Academy of Medical Sciences), Shandong First Medical University, Jinan, 250117, China.
- School of Laboratory Animal (Shandong Laboratory Animal Center), Shandong Academy of Medical Sciences), Shandong First Medical University, Jinan, 250117, China.
| | - Wenjuan Liu
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250000, China
- School of Clinical and Basic Medical Science, Shandong Academy of Medical Sciences), Shandong First Medical University, Jinan, 250117, China
| | - Jingwen Fu
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250000, China
- School of Clinical and Basic Medical Science, Shandong Academy of Medical Sciences), Shandong First Medical University, Jinan, 250117, China
| | - Zhong Zhang
- School of Clinical and Basic Medical Science, Shandong Academy of Medical Sciences), Shandong First Medical University, Jinan, 250117, China.
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12
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Dong L, Shen S, Jiang X, Ding B, Yang M, Chen W, Liu Y, Chen Z, Cao Q, Gao Y, Ma S, Zhang L, Dong J, Yang Q. Identification of Triazolo-quinazolinone Derivatives as Novel and Potent Chitinase OfChi-h Inhibitors Based on Structure-Based Virtual Screening. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37909051 DOI: 10.1021/acs.jafc.3c02701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
Insect chitinase, OfChi-h, from Ostrinia furnacalis, is considered as a promising target for the development of green pesticides. On the basis of the crystal structure of OfChi-h, we successfully obtained a triazolo-quinazolinone scaffold as the novel class of OfChi-h inhibitor via a structure-based virtual screening approach. Rational compound screening enabled us to acquire a potent OfChi-h inhibitor TQ19 with a Ki value of 0.33 μM. Furthermore, the in vivo biological activity of target compounds was assayed. The results showed that compounds TQ8 and TQ19 could dramatically inhibit the growth and development of Ostrinia nubilalis larvae, and most of the compounds showed higher insecticidal activity than hexaflumuron. This present work reveals that triazolo-quinazolinone derivatives can serve as novel candidates for insect growth regulators.
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Affiliation(s)
- Lili Dong
- College of Plant Protection/State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Shengqiang Shen
- Tingo Exosomes Technology Company, Limited, Tianjin 300301, People's Republic of China
| | - Xi Jiang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
- Guangdong Laboratory for Lingnan Modern Agriculture (Shenzhen Branch), Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangdong 518120, People's Republic of China
| | - Baokang Ding
- College of Plant Protection/State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Meiling Yang
- College of Plant Protection/State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Wei Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
| | - Yaxin Liu
- College of Plant Protection/State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Ziyang Chen
- College of Plant Protection/State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Qingnan Cao
- College of Plant Protection/State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Yongming Gao
- College of Plant Protection/State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Shujie Ma
- College of Plant Protection/State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Lihui Zhang
- College of Plant Protection/State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Jingao Dong
- College of Plant Protection/State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Qing Yang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
- Guangdong Laboratory for Lingnan Modern Agriculture (Shenzhen Branch), Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangdong 518120, People's Republic of China
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13
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Rakesh V, Kalia VK, Ghosh A. Diversity of transgenes in sustainable management of insect pests. Transgenic Res 2023; 32:351-381. [PMID: 37573273 DOI: 10.1007/s11248-023-00362-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 07/28/2023] [Indexed: 08/14/2023]
Abstract
Insecticidal transgenes, when incorporated and expressed in plants, confer resistance against insects by producing several products having insecticidal properties. Protease inhibitors, lectins, amylase inhibitors, and chitinase genes are associated with the natural defenses developed by plants to counter insect attacks. Several toxin genes are also derived from spiders and scorpions for protection against insects. Bacillus thuringiensis Berliner is a microbial source of insecticidal toxins. Several methods have facilitated the large-scale production of transgenic plants. Bt-derived cry, cyt, vip, and sip genes, plant-derived genes such as lectins, protease inhibitors, and alpha-amylase inhibitors, insect cell wall-degrading enzymes like chitinase and some proteins like arcelins, plant defensins, and ribosome-inactivating proteins have been successfully utilized to impart resistance to insects. Besides, transgenic plants expressing double-stranded RNA have been developed with enhanced resistance. However, the long-term effects of transgenes on insect resistance, the environment, and human health must be thoroughly investigated before they are made available for commercial planting. In this chapter, the present status, prospects, and future scope of transgenes for insect pest management have been summarized and discussed.
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Affiliation(s)
- V Rakesh
- Division of Entomology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
- Insect Vector Laboratory, Advanced Centre for Plant Virology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Vinay K Kalia
- Division of Entomology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Amalendu Ghosh
- Insect Vector Laboratory, Advanced Centre for Plant Virology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India.
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14
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Zhao Z, Chen W, Dong Y, Yang Q, Lu H, Zhang J. Discovery of Potent N-Methylcarbamoylguanidino Insect Growth Regulators Targeting OfChtI and OfChi-h. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:12431-12439. [PMID: 37556680 DOI: 10.1021/acs.jafc.3c02448] [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: 08/11/2023]
Abstract
Insect growth regulators (IGRs) are important insecticides that reduce the harm caused by insects to crops by controlling pest population growth. Chitinases are closely associated with insect growth and are among the most important glycoside hydrolases. Thus, Chitinase is an attractive target for the development of novel insecticides. In this study, we designed and synthesized a series of novel and highly potent insecticides targeting OfChtI and OfChi-h in insects. Enzymatic activity tests showed that most compounds exhibited a potent inhibitory activity against OfCh-h. Binding mode analysis revealed that the target compounds bound to the -1 active subsite of Chitinase through the key pharmacophore N-methylcarbamoylguanidino. Compounds 6e, 6g, 6j, and 6o significantly affected the growth and development of Plutella xylostella at 200 mg/L. Our study provides novel insights for the development of potent insecticide-targeted Chitinase combinations based on receptors and ligands.
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Affiliation(s)
- Zhixiang Zhao
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Wei Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
| | - Yanhong Dong
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Qing Yang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection and Shenzhen Agricultural Genome Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
| | - Huizhe Lu
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Jianjun Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
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15
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Kotb E, Alabdalall AH, Alghamdi AI, Ababutain IM, Aldakeel SA, Al-Zuwaid SK, Algarudi BM, Algarudi SM, Ahmed AA, Albarrag AM. Screening for chitin degrading bacteria in the environment of Saudi Arabia and characterization of the most potent chitinase from Streptomyces variabilis Am1. Sci Rep 2023; 13:11723. [PMID: 37474592 PMCID: PMC10359409 DOI: 10.1038/s41598-023-38876-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 07/16/2023] [Indexed: 07/22/2023] Open
Abstract
Forty-six promising chitinolytic isolates were recovered during a screening for chitinolytic bacteria in the environment of Saudi Arabia. The top three isolates belonged to the genus Streptomyces. Streptomyces variabilis Am1 was able to excrete the highest amount of chitinases, reaching the maximum at 84 h with 0.5% yeast extract and nitrogen source and 2% galactose as a carbon source. Purification of chitinase by DEAE-Cellulose and Sephadex G75 improved the specific activity to 18.6-fold and the recovery to 23.8% and showed a mass at 56 kDa. The optimal catalysis of the purified chitinase was at 40 °C and pH 8 with high thermostability and pH stability as reflected by a midpoint temperature value of 66.6 °C and stability at pH 4-9. The protein reagents SDS, EDTA, and EGTA significantly inhibited the enzyme and the EDTA-chelated chitinase restored its activity after the addition of Fe2+ ions suggesting a metallo-chitinase type with ferric ions as cofactors. Chitinase exerted high antifungal activity against some phytopathogenic fungi. Interestingly, the tested Streptomyces were able to produce chitosan nanocubes along with chitosan from chitin degradation which may be an additional power in their antifungal activity in nature. This work also reveals the importance of unexplored environments as a pool of promising microorganisms with biotechnological applications.
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Affiliation(s)
- Essam Kotb
- Basic and Applied Scientific Research Center (BASRC), Imam Abdulrahman Bin Faisal University (IAU), P.O. Box 1982, Dammam, 31441, Saudi Arabia.
- Department of Biology, College of Science, Imam Abdulrahman Bin Faisal University (IAU), P.O. Box 1982, Dammam, 31441, Saudi Arabia.
| | - Amira H Alabdalall
- Basic and Applied Scientific Research Center (BASRC), Imam Abdulrahman Bin Faisal University (IAU), P.O. Box 1982, Dammam, 31441, Saudi Arabia
- Department of Biology, College of Science, Imam Abdulrahman Bin Faisal University (IAU), P.O. Box 1982, Dammam, 31441, Saudi Arabia
| | - Azzah I Alghamdi
- Basic and Applied Scientific Research Center (BASRC), Imam Abdulrahman Bin Faisal University (IAU), P.O. Box 1982, Dammam, 31441, Saudi Arabia
- Department of Biology, College of Science, Imam Abdulrahman Bin Faisal University (IAU), P.O. Box 1982, Dammam, 31441, Saudi Arabia
| | - Ibtisam M Ababutain
- Basic and Applied Scientific Research Center (BASRC), Imam Abdulrahman Bin Faisal University (IAU), P.O. Box 1982, Dammam, 31441, Saudi Arabia
- Department of Biology, College of Science, Imam Abdulrahman Bin Faisal University (IAU), P.O. Box 1982, Dammam, 31441, Saudi Arabia
| | - Sumayh A Aldakeel
- The National Center for Genomic Technology (NCGT), Life Science and Environment Research Institute, King Abdulaziz City for Science and Technology (KACST), Riyadh, Saudi Arabia
- Genomic of Infectious Diseases Laboratory, Saudi Center for Disease Prevention and Control, Public Health Authority, Riyadh, Saudi Arabia
| | - Safa K Al-Zuwaid
- Basic and Applied Scientific Research Center (BASRC), Imam Abdulrahman Bin Faisal University (IAU), P.O. Box 1982, Dammam, 31441, Saudi Arabia
- Department of Biology, College of Science, Imam Abdulrahman Bin Faisal University (IAU), P.O. Box 1982, Dammam, 31441, Saudi Arabia
| | - Batool M Algarudi
- Basic and Applied Scientific Research Center (BASRC), Imam Abdulrahman Bin Faisal University (IAU), P.O. Box 1982, Dammam, 31441, Saudi Arabia
- Department of Biology, College of Science, Imam Abdulrahman Bin Faisal University (IAU), P.O. Box 1982, Dammam, 31441, Saudi Arabia
| | - Sakina M Algarudi
- Basic and Applied Scientific Research Center (BASRC), Imam Abdulrahman Bin Faisal University (IAU), P.O. Box 1982, Dammam, 31441, Saudi Arabia
- Department of Biology, College of Science, Imam Abdulrahman Bin Faisal University (IAU), P.O. Box 1982, Dammam, 31441, Saudi Arabia
| | - Asmaa A Ahmed
- Department of Statistics, Faculty of Commerce, Al-Azhar University (Girls' Branch), P.O. Box 11751, Cairo, Egypt
| | - Ahmed M Albarrag
- Department of Pathology, School of Medicine, King Saud University, Riyadh, Saudi Arabia
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16
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Seman-Kamarulzaman AF, Pariamiskal FA, Azidi AN, Hassan M. A Review on Digestive System of Rhynchophorus ferrugineus as Potential Target to Develop Control Strategies. INSECTS 2023; 14:506. [PMID: 37367322 DOI: 10.3390/insects14060506] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/21/2023] [Accepted: 05/27/2023] [Indexed: 06/28/2023]
Abstract
Rhynchophorus ferrugineus, commonly known as red palm weevil (RPW), is a high-risk insect pest that has become a threat to many important palm species. There are several dominant factors that lead to the successful infestation of RPW, including its stealthy lifestyle, highly chitinized mouthpart, and high fecundity rate. Due to that, millions of dollars of losses have been suffered by many countries invaded by RPW. Several methods have been designed to control its invasion, including the usage of insecticides, but many cause resistance and environmental pollution. Therefore, an environmentally friendly insecticide that targets specific systems or pathways in RPW is urgently needed. One of the potential targets is the digestive system of RPW, as it is the major interface between the insect and its plant host. The related knowledge of RPW's digestive system, such as the anatomy, microflora, transcriptomic analysis, and proteomic analysis, is important to understand its effects on RPW's survival. Several data from different omics regarding the digestive systems of RPW have been published in separate reports. Some of the potential targets have been reported to be inhibited by certain potential insecticides, while other targets have not yet been tested with any inhibitors. Hence, this review may lead to a better understanding on managing infestations of RPW using the system biology approach for its digestive system.
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Affiliation(s)
- Ahmad-Faris Seman-Kamarulzaman
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
- Faculty of Applied Sciences, Universiti Teknologi MARA Pahang, Bandar Tun Abdul Razak Jengka 26400, Pahang, Malaysia
| | | | - Amiratul Nabihah Azidi
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
| | - Maizom Hassan
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
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17
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Gong C, Hasnain A, Wang Q, Liu D, Xu Z, Zhan X, Liu X, Pu J, Sun M, Wang X. Eco-friendly deacetylated chitosan base siRNA biological-nanopesticide loading cyromazine for efficiently controlling Spodoptera frugiperda. Int J Biol Macromol 2023; 241:124575. [PMID: 37100329 DOI: 10.1016/j.ijbiomac.2023.124575] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 04/07/2023] [Accepted: 04/19/2023] [Indexed: 04/28/2023]
Abstract
Spodoptera frugiperda is a serious threat to various crops, such as corn and rice, and results in severe economic losses. Herein, a chitin synthase sfCHS highly expressed in the epidermis of S. frugiperda was screened, and when interfered by an sfCHS-siRNA nanocomplex, most individuals could not ecdysis (mortality rate 53.3 %) or pupate (abnormal pupation 80.6 %). Based on the results of structure-based virtual screening, cyromazine (CYR, binding free energy -57.285 kcal/mol) could inhibit ecdysis (LC50, 19.599 μg/g). CYR-CS/siRNA nanoparticles encapsulating CYR and SfCHS-siRNA with chitosan (CS) were successfully prepared, as confirmed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), and 74.9 mg/g CYR was characterized in the core of CYR-CS/siRNA by high-performance liquid chromatography and Fourier transform infrared spectroscopy. Small amounts of prepared CYR-CS/siRNA containing only 1.5 μg/g CYR could better inhibit chitin synthesis in the cuticle and peritrophic membrane (mortality rate 84.4 %). Therefore, chitosan/siRNA nanoparticle-loaded pesticides were useful for pesticide reduction and comprehensive control of S. frugiperda.
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Affiliation(s)
- Changwei Gong
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu 611130, China; College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China
| | - Ali Hasnain
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu 611130, China; College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Qiulin Wang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu 611130, China
| | - Dan Liu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu 611130, China
| | - Zhengze Xu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiaoxu Zhan
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu 611130, China
| | - Xuemei Liu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu 611130, China; College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China
| | - Jian Pu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu 611130, China; College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China
| | - Mengmeng Sun
- College of Science, Sichuan Agricultural University, Chengdu 611130, China
| | - Xuegui Wang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu 611130, China; College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China.
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18
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Jin X, Sun T, Zhang X, Guo B, Cui J, Ling Y, Zhang L, Yang Q, Chen W, Yang X. Structure-Based Virtual Screening of Natural Products and Optimization for the Design and Synthesis of Novel CeCht1 Inhibitors as Nematicide Candidates. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:244-254. [PMID: 36579419 DOI: 10.1021/acs.jafc.2c06516] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Nematode chitinases are critical components of the nematode life cycle, and CeCht1 is a potential target for developing novel nematicides. Herein, lunidonine, a natural quinoline alkaloid, was first discovered to have inhibitory activity against CeCht1, which was acquired from a library of over 16,000 natural products using a structure-based virtual screening methodology. A pocket-based lead optimization strategy was employed based on the predicted binding mode of lunidonine. Subsequently, a series of benzo[d][1,3]dioxole-5-carboxylate derivatives were designed and synthesized, and their inhibitory activities against CeCht1 as well as in vitro nematicidal activities against Caenorhabditis elegans were assessed. The analysis of structure-activity relationship and inhibitory mechanisms provided insights into their interactions with the CeCht1 active site, which could facilitate future research in improving the potency of the inhibitory activity. Especially, compound a12 interacted well with CeCht1 and exhibited excellent in vitro nematicidal activity against C. elegans with a LC50 value of 41.54 mg/L, suggesting that it could be a promising candidate for a novel chemical nematicide targeting CeCht1. The known binding modes and structural features of these inhibitors will contribute to the design of stronger CeCht1-based nematicides to control nematodes in agriculture.
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Affiliation(s)
- Xiaoyu Jin
- Innovation Center of Pesticide Research. Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, China
| | - Tengda Sun
- Innovation Center of Pesticide Research. Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, China
| | - Xiaoming Zhang
- Innovation Center of Pesticide Research. Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, China
| | - Bingbo Guo
- Innovation Center of Pesticide Research. Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, China
| | - Jialin Cui
- Innovation Center of Pesticide Research. Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, China
| | - Yun Ling
- Innovation Center of Pesticide Research. Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, China
| | - Li Zhang
- Innovation Center of Pesticide Research. Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, China
| | - Qing Yang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing100193, China
| | - Wei Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing100193, China
| | - Xinling Yang
- Innovation Center of Pesticide Research. Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, China
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19
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Liu XY, Wang SS, Zhong F, Zhou M, Jiang XY, Cheng YS, Dan YH, Hu G, Li C, Tang B, Wu Y. Chitinase (CHI) of Spodoptera frugiperda affects molting development by regulating the metabolism of chitin and trehalose. Front Physiol 2022; 13:1034926. [PMID: 36262255 PMCID: PMC9574123 DOI: 10.3389/fphys.2022.1034926] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 09/16/2022] [Indexed: 11/13/2022] Open
Abstract
Chitin is the main component of insect exoskeleton and midgut peritrophic membrane. Insect molting is the result of the balance and coordination of chitin synthesis and degradation in chitin metabolism under the action of hormones. In this study, a 678 bp dsRNA fragment was designed and synthesized according to the known CHI (Chitinase) sequence of Spodoptera frugiperda. It was injected into the larvae to observe the molting and development of S. frugiperda. At the same time, the activities of trehalase and chitinase, the contents of trehalose, chitin and other substances were detected, and the expression of related genes in the chitin synthesis pathway was determined. The results showed that CHI gene was highly expressed at the end of each instar, prepupa and pupal stage before molting; At 12 and 24 h after dsRNA injection of CHI gene of S. frugiperda, the expression of CHI gene decreased significantly, and the chitinase activity decreased significantly from 12 to 48 h. The expression of chitin synthase (CHSB) gene decreased significantly, and the chitin content increased significantly. Some larvae could not molt normally and complete development, leading to certain mortality. Secondly, after RNAi of CHI gene, the content of glucose and glycogen increased first and then decreased, while the content of trehalose decreased significantly or showed a downward trend. The activities of the two types of trehalase and the expression levels of trehalase genes decreased first and then increased, especially the trehalase activities increased significantly at 48 h after dsCHI injection. And trehalose-6-phosphate synthase (TPS), glutamine: fructose-6-phosphate amidotransferase (GFAT), UDP-N-acetylglucosamine pyrophosphorylases (UAP), hexokinase (HK), glucose-6-phosphate isomerase (G6PI) and phosphoacetylglucosamine mutase (PAGM) all decreased significantly at 24 h, and then increased or significantly increased at 48 h. These results indicated that when the expression of chitinase gene of S. frugiperda was inhibited, it affected the degradation of chitin in the old epidermis and the formation of new epidermis, and the content of chitin increased, which led to the failure of larvae to molt normally. Moreover, the chitin synthesis pathway and trehalose metabolism were also regulated. The relevant results provide a theoretical basis for screening target genes and developing green insecticides to control pests by using the chitin metabolism pathway.
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Affiliation(s)
- Xiang-Yu Liu
- Guizhou Provincial Key Laboratory for Rare Animal and Economic Insect of the Mountainous Region, Department of Biology and Engineering of Environment, Guiyang University, Guiyang, China
| | - Sha-Sha Wang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Fan Zhong
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Min Zhou
- Guizhou Provincial Key Laboratory for Rare Animal and Economic Insect of the Mountainous Region, Department of Biology and Engineering of Environment, Guiyang University, Guiyang, China
| | - Xin-Yi Jiang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Yi-Sha Cheng
- Guizhou Provincial Key Laboratory for Rare Animal and Economic Insect of the Mountainous Region, Department of Biology and Engineering of Environment, Guiyang University, Guiyang, China
| | - Yi-Hao Dan
- Guizhou Provincial Key Laboratory for Rare Animal and Economic Insect of the Mountainous Region, Department of Biology and Engineering of Environment, Guiyang University, Guiyang, China
| | - Gao Hu
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Can Li
- Guizhou Provincial Key Laboratory for Rare Animal and Economic Insect of the Mountainous Region, Department of Biology and Engineering of Environment, Guiyang University, Guiyang, China
| | - Bin Tang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Yan Wu
- Guizhou Provincial Key Laboratory for Rare Animal and Economic Insect of the Mountainous Region, Department of Biology and Engineering of Environment, Guiyang University, Guiyang, China
- *Correspondence: Yan Wu,
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20
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Qu MB, Guo XX, Kong L, Hou LJ, Yang Q. A midgut-specific lytic polysaccharide monooxygenase of Locusta migratoria is indispensable for the deconstruction of the peritrophic matrix. INSECT SCIENCE 2022; 29:1287-1298. [PMID: 35150068 DOI: 10.1111/1744-7917.13016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 01/25/2022] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
Lytic polysaccharide monooxygenases (LPMOs) are important enzymes that boost the hydrolysis of recalcitrant polysaccharides, such as chitin. They are found extensively in different insect species and are classified as auxiliary activities family 15 (AA15) LPMOs (LPMO15). Some of them were identified from the insect midgut and proven to act on chitin. However, knowledge about their physiological roles during insect growth and development remains limited. Here, we found that midgut-specific LPMO15s are widely distributed in different insect orders, such as the orthopteran Locusta migratoria and the lepidopteran Bombyx mori. Using L. migratoria as a model insect, the function of midgut-specific LmLPMO15-3 during development was investigated. Double-stranded RNA-mediated downregulation of LmLPMO15-3 expression at the 4th or 5th instar nymph stage severely decreased the survival rate and resulted in lethal phenotypes. Hematoxylin and eosin staining results indicated that the deficient individuals exhibited incompletely digested peritrophic matrix (PM), which suggested that LmLPMO15-3 is essential for the deconstruction of the PM during molting. This study provides direct evidence of the physiological importance of a midgut-specific LPMO15 during insect development. As L. migratoria is one of the most destructive agricultural pests, LmLPMO15-3 is a potential target for pest management.
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Affiliation(s)
- Ming-Bo Qu
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning Province, China
| | - Xiao-Xi Guo
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning Province, China
| | - Lin Kong
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning Province, China
| | - Ling-Jie Hou
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning Province, China
| | - Qing Yang
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning Province, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangdong Province, China
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21
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Dong L, Shen S, Jiang X, Liu Y, Li J, Chen W, Wang Y, Shi J, Liu J, Ma S, Zhang L, Dong J, Yang Q. Discovery of Azo-Aminopyrimidines as Novel and Potent Chitinase O fChi-h Inhibitors via Structure-Based Virtual Screening and Rational Lead Optimization. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:12203-12210. [PMID: 36121180 DOI: 10.1021/acs.jafc.2c03997] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Chitinase OfChi-h, from the destructive agricultural pest Ostrinia furnacalis, is considered as a promising target for green pest control and management. In this study, structure-based virtual screening and rational molecular optimization led to the synthesis of a series of azo-aminopyrimidine derivatives as a novel class of OfChi-h inhibitors. Among them, the most potent compound 8f, with a benzyl on the amino group at the 4-position of pyrimidine, exhibited a Ki value of 64.7 nM against OfChi-h. In addition, molecular docking studies were carried out to investigate the basis for the potency of the aminopyrimidines against OfChi-h. Furthermore, the insecticidal activity of the target compounds against Plutella xylostella and Ostrinia nubilalis was assessed, and the potent OfChi-h inhibitors 8f and 8i showed higher insecticidal activity than the control pesticide hexaflumuron. The present work revealed that the azo-aminopyrimidine skeletons characterized by concise chemical structure and high efficiency could be further developed as potential pesticides for the control of lepidopteran pests.
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Affiliation(s)
- Lili Dong
- State Key Laboratory of North China Crop Improvement and Regulation, College of Plant Protection, Hebei Agricultural University, Baoding 071001, China
| | - Shengqiang Shen
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100091, China
| | - Xi Jiang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- Guangdong Laboratory for Lingnan Modern Agriculture (Shenzhen Branch), Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Yaxin Liu
- State Key Laboratory of North China Crop Improvement and Regulation, College of Plant Protection, Hebei Agricultural University, Baoding 071001, China
| | - Jingjing Li
- State Key Laboratory of North China Crop Improvement and Regulation, College of Plant Protection, Hebei Agricultural University, Baoding 071001, China
| | - Wei Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yizhen Wang
- State Key Laboratory of North China Crop Improvement and Regulation, College of Plant Protection, Hebei Agricultural University, Baoding 071001, China
| | - Jiakun Shi
- State Key Laboratory of North China Crop Improvement and Regulation, College of Plant Protection, Hebei Agricultural University, Baoding 071001, China
| | - Jiaxin Liu
- State Key Laboratory of North China Crop Improvement and Regulation, College of Plant Protection, Hebei Agricultural University, Baoding 071001, China
| | - Shujie Ma
- State Key Laboratory of North China Crop Improvement and Regulation, College of Plant Protection, Hebei Agricultural University, Baoding 071001, China
| | - Lihui Zhang
- State Key Laboratory of North China Crop Improvement and Regulation, College of Plant Protection, Hebei Agricultural University, Baoding 071001, China
| | - Jingao Dong
- State Key Laboratory of North China Crop Improvement and Regulation, College of Plant Protection, Hebei Agricultural University, Baoding 071001, China
| | - Qing Yang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- Guangdong Laboratory for Lingnan Modern Agriculture (Shenzhen Branch), Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
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22
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Yang L, Chen M, Han X, Liu C, Wang C, Zhang G, Yang D, Zhao S. Discovery of ZQ- 8, a Novel Starting Point To Develop Inhibitors against the Potent Molecular Target Chitinase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:11314-11323. [PMID: 36054909 DOI: 10.1021/acs.jafc.2c04693] [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: 06/15/2023]
Abstract
In a previous study, we found that compound ZQ-8 had a strong impact on the growth and development of Helicoverpa armigera. However, the mechanism and target of ZQ-8 are not clear, which makes it difficult to optimize the structure of this compound. In this study, the preliminary mode of action of ZQ-8 was studied through RNA sequencing and molecular docking. We also analyzed the underlying mechanisms from the aspect of ZQ-8 with respect to chitinase. The results showed that ZQ-8 mainly affects chitinase activity in the epidermis of H. armigera. ZQ-8 can competitively combine with chitinase 2 and endochitinase to form a relatively stable complex of ZQ-8, resulting in the failure of chitinase to degrade chitin. These findings indicate that the epidermis of H. armigera was identified as the action site of ZQ-8 and chitinase 2 and endochitinase were potential targets.
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Affiliation(s)
- Lin Yang
- Key Laboratory of Oasis Agricultural Pest Management and Plant Protection Utilization, College of Agriculture, Shihezi University, Shihezi, Xinjiang 832002, People's Republic of China
| | - Minghui Chen
- Key Laboratory of Oasis Agricultural Pest Management and Plant Protection Utilization, College of Agriculture, Shihezi University, Shihezi, Xinjiang 832002, People's Republic of China
| | - Xiaoqiang Han
- Key Laboratory of Oasis Agricultural Pest Management and Plant Protection Utilization, College of Agriculture, Shihezi University, Shihezi, Xinjiang 832002, People's Republic of China
| | - Caiyue Liu
- Key Laboratory of Oasis Agricultural Pest Management and Plant Protection Utilization, College of Agriculture, Shihezi University, Shihezi, Xinjiang 832002, People's Republic of China
| | - Chunjuan Wang
- Key Laboratory of Oasis Agricultural Pest Management and Plant Protection Utilization, College of Agriculture, Shihezi University, Shihezi, Xinjiang 832002, People's Republic of China
| | - Guoqiang Zhang
- Key Laboratory of Oasis Agricultural Pest Management and Plant Protection Utilization, College of Agriculture, Shihezi University, Shihezi, Xinjiang 832002, People's Republic of China
| | - Desong Yang
- Key Laboratory of Oasis Agricultural Pest Management and Plant Protection Utilization, College of Agriculture, Shihezi University, Shihezi, Xinjiang 832002, People's Republic of China
| | - Sifeng Zhao
- Key Laboratory of Oasis Agricultural Pest Management and Plant Protection Utilization, College of Agriculture, Shihezi University, Shihezi, Xinjiang 832002, People's Republic of China
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23
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Jiang Z, Shi D, Li H, He D, Zhu K, Li J, Zi Y, Xu Z, Huang J, Duan H, Yang Q. Rational Design and Identification of Novel Piperine Derivatives as Multichitinase Inhibitors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:10326-10336. [PMID: 35960858 DOI: 10.1021/acs.jafc.2c03751] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Asian corn borer (Ostrinia furnacalis) is one of the most destructive pests in agriculture. Three chitinases OfChtI, OfChtII, and OfChi-h are regarded as potential targets for discovering novel agrochemicals to control O. furnacalis. In this study, piperine (Ki = 43.78∼83.03 μM) was first shown to exhibit inhibitory activities against all three chitinases. Subsequently, 19 novel piperine derivatives were rationally designed based on the conserved aromatic residues of three chitinases and then synthesized. Among them, Compound 5k (Ki = 11.78∼22.82 μM) was identified as the most effective multichitinase inhibitor and indeed displayed higher insecticidal activity against O. furnacalis than dual- or single-chitinase inhibitors. Molecular mechanism studies clarified that Compound 5k interacted with two conserved TRP and TYR of three chitinases in identical modes through hydrogen bonds, hydrophobic, and π-π interactions. Moreover, the microinjection experiment indicated that Compound 5k exhibited substantial sublethal effects against O. furnacalis by regulating its growth and development. This study provides evidence of multichitinase inhibitors to be applied in the control of O. furnacalis.
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Affiliation(s)
- Zhiyang Jiang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Dongmei Shi
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Huilin Li
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Danchan He
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection and Shenzhen Agricultural Genome Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Kai Zhu
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Jingyi Li
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Yunjiang Zi
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Zhijian Xu
- CAS Key Laboratory of Receptor Research, Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Jiaxing Huang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Hongxia Duan
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Qing Yang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection and Shenzhen Agricultural Genome Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100193, China
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24
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Han Q, Wu N, Liu YY, Zhang JY, Zhang RL, Li HL, Jiang ZY, Huang JX, Duan HX, Yang Q. Piperonyl-Tethered Rhodanine Derivatives Potently Inhibit Chitinolytic Enzymes of Ostrinia furnacalis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:7387-7399. [PMID: 35687728 DOI: 10.1021/acs.jafc.2c02091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Insect pest chitinases are potential target for developing new insect growth regulators. Piperine was found first to inhibit the insect chitinase (OfChi-h) from Ostrinia furnacalis (Asian corn borer) in this work, except for previously reported OfChtI. Novel piperonyl-tethered rhodanine derivatives 7a-j were rationally designed with piperine as lead and synthesized by introducing a unique rhodanine moiety into the piperine scaffold based on the similar binding cavity of OfChtI and OfChi-h. Compared to piperine, compounds 7a-j showed approximately 100- to 400-fold or 110- to 210-fold higher inhibitory capacity against two chitinases, respectively. Molecular mechanism studies indicated that π interactions are crucial for improving inhibitory activity against two chitinases due to the introduction of the conjugated rhodanine ring. Moreover, compounds 7a-c could dramatically inhibit the growth and development of O. furnacalis larvae by in vivo activity evaluation. This study provides novel piperonyl-tethered rhodanine derivatives inhibiting dual chitinases as insect growth regulator candidates.
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Affiliation(s)
- Qing Han
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, People's Republic of China
| | - Nan Wu
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning116024, People's Republic of China
| | - Yao-Yang Liu
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, People's Republic of China
| | - Jing-Yu Zhang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, People's Republic of China
| | - Ru-Lei Zhang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, People's Republic of China
| | - Hui-Lin Li
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, People's Republic of China
| | - Zhi-Yang Jiang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, People's Republic of China
| | - Jia-Xing Huang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, People's Republic of China
| | - Hong-Xia Duan
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, People's Republic of China
| | - Qing Yang
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning116024, People's Republic of China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing100193, People's Republic of China
- Guangdong Laboratory for Lingnan Modern Agriculture (Shenzhen Branch), Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen518120, People's Republic of China
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25
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Qiu S, Zhou S, Tan Y, Feng J, Bai Y, He J, Cao H, Che Q, Guo J, Su Z. Biodegradation and Prospect of Polysaccharide from Crustaceans. Mar Drugs 2022; 20:310. [PMID: 35621961 PMCID: PMC9146327 DOI: 10.3390/md20050310] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 04/29/2022] [Accepted: 04/29/2022] [Indexed: 01/27/2023] Open
Abstract
Marine crustacean waste has not been fully utilized and is a rich source of chitin. Enzymatic degradation has attracted the wide attention of researchers due to its unique biocatalytic ability to protect the environment. Chitosan (CTS) and its derivative chitosan oligosaccharides (COSs) with various biological activities can be obtained by the enzymatic degradation of chitin. Many studies have shown that chitosan and its derivatives, chitosan oligosaccharides (COSs), have beneficial properties, including lipid-lowering, anti-inflammatory and antitumor activities, and have important application value in the medical treatment field, the food industry and agriculture. In this review, we describe the classification, biochemical characteristics and catalytic mechanisms of the major degrading enzymes: chitinases, chitin deacetylases (CDAs) and chitosanases. We also introduced the technology for enzymatic design and modification and proposed the current problems and development trends of enzymatic degradation of chitin polysaccharides. The discussion on the characteristics and catalytic mechanism of chitosan-degrading enzymes will help to develop new types of hydrolases by various biotechnology methods and promote their application in chitosan.
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Affiliation(s)
- Shuting Qiu
- Guangdong Engineering Research Center of Natural Products and New Drugs, Guangdong Provincial University Engineering Technology Research Center of Natural Products and Drugs, Guangdong Pharmaceutical University, Guangzhou 510006, China; (S.Q.); (S.Z.); (Y.T.); (J.F.)
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Key Laboratory of Glucolipid Metabolic Disorder, Ministry of Education of China, Guangdong TCM Key Laboratory for Metabolic Diseases, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Shipeng Zhou
- Guangdong Engineering Research Center of Natural Products and New Drugs, Guangdong Provincial University Engineering Technology Research Center of Natural Products and Drugs, Guangdong Pharmaceutical University, Guangzhou 510006, China; (S.Q.); (S.Z.); (Y.T.); (J.F.)
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Key Laboratory of Glucolipid Metabolic Disorder, Ministry of Education of China, Guangdong TCM Key Laboratory for Metabolic Diseases, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Yue Tan
- Guangdong Engineering Research Center of Natural Products and New Drugs, Guangdong Provincial University Engineering Technology Research Center of Natural Products and Drugs, Guangdong Pharmaceutical University, Guangzhou 510006, China; (S.Q.); (S.Z.); (Y.T.); (J.F.)
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Key Laboratory of Glucolipid Metabolic Disorder, Ministry of Education of China, Guangdong TCM Key Laboratory for Metabolic Diseases, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Jiayao Feng
- Guangdong Engineering Research Center of Natural Products and New Drugs, Guangdong Provincial University Engineering Technology Research Center of Natural Products and Drugs, Guangdong Pharmaceutical University, Guangzhou 510006, China; (S.Q.); (S.Z.); (Y.T.); (J.F.)
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Key Laboratory of Glucolipid Metabolic Disorder, Ministry of Education of China, Guangdong TCM Key Laboratory for Metabolic Diseases, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Yan Bai
- School of Public Health, Guangdong Pharmaceutical University, Guangzhou 510310, China; (Y.B.); (J.H.)
| | - Jincan He
- School of Public Health, Guangdong Pharmaceutical University, Guangzhou 510310, China; (Y.B.); (J.H.)
| | - Hua Cao
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan 528458, China;
| | - Qishi Che
- Guangzhou Rainhome Pharm & Tech Co., Ltd., Science City, Guangzhou 510663, China;
| | - Jiao Guo
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Key Laboratory of Glucolipid Metabolic Disorder, Ministry of Education of China, Guangdong TCM Key Laboratory for Metabolic Diseases, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Zhengquan Su
- Guangdong Engineering Research Center of Natural Products and New Drugs, Guangdong Provincial University Engineering Technology Research Center of Natural Products and Drugs, Guangdong Pharmaceutical University, Guangzhou 510006, China; (S.Q.); (S.Z.); (Y.T.); (J.F.)
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Key Laboratory of Glucolipid Metabolic Disorder, Ministry of Education of China, Guangdong TCM Key Laboratory for Metabolic Diseases, Guangdong Pharmaceutical University, Guangzhou 510006, China
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26
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Liu Y, Ahmed S, Fang Y, Chen M, An J, Yang G, Hou X, Lu J, Ye Q, Zhu R, Liu Q, Liu S. Discovery of Chitin Deacetylase Inhibitors through Structure-Based Virtual Screening and Biological Assays. J Microbiol Biotechnol 2022; 32:504-513. [PMID: 35131956 PMCID: PMC9628821 DOI: 10.4014/jmb.2201.01009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 01/30/2022] [Accepted: 02/03/2022] [Indexed: 12/15/2022]
Abstract
Chitin deacetylase (CDA) inhibitors were developed as novel antifungal agents because CDA participates in critical fungal physiological and metabolic processes and increases virulence in soilborne fungal pathogens. However, few CDA inhibitors have been reported. In this study, 150 candidate CDA inhibitors were selected from the commercial Chemdiv compound library through structure-based virtual screening. The top-ranked 25 compounds were further evaluated for biological activity. The compound J075-4187 had an IC50 of 4.24 ± 0.16 μM for AnCDA. Molecular docking calculations predicted that compound J075-4187 binds to the amino acid residues, including active sites (H101, D48). Furthermore, compound J075-4187 inhibited food spoilage fungi and plant pathogenic fungi, with minimum inhibitory concentration (MIC) at 260 μg/ml and minimum fungicidal concentration (MFC) at 520 μg/ml. Therefore, compound J075-4187 is a good candidate for use in developing antifungal agents for fungi control.
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Affiliation(s)
- Yaodong Liu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China
| | - Sibtain Ahmed
- University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Yaowei Fang
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China,Jiangsu Marine Resources Development Research Institute, Jiangsu Ocean University, Lianyungang 222000, P.R. China
| | - Meng Chen
- Lianyungang Inspection and Testing Center for Food and Drug Control, P.R. China
| | - Jia An
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China
| | - Guang Yang
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China
| | - Xiaoyue Hou
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China
| | - Jing Lu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China
| | - Qinwen Ye
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China
| | - Rongjun Zhu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China
| | - Qitong Liu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China
| | - Shu Liu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China,Corresponding author E-mail:
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Zhao Z, Xu Q, Chen W, Wang S, Yang Q, Dong Y, Zhang J. Rational Design, Synthesis, and Biological Investigations of N-Methylcarbamoylguanidinyl Azamacrolides as a Novel Chitinase Inhibitor. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:4889-4898. [PMID: 35416043 DOI: 10.1021/acs.jafc.2c00016] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Chitinase is one of the most important glycoside hydrolyases, widely existing in bacteria, fungi, insects, and plants. It is involved in fungal cell wall remodeling and insect molting. Chitinase inhibitors are an effective means of controlling pathogens and pests. Natural product argifin is a 17-membered pentapeptide that exhibits efficient chitinase inhibitory activity. However, the complexity of the synthetic process results in a lot of restrictions for wide range of applications. In this work, we designed a series of azamacrolide chitinase inhibitors based on the structural features of argifin that have high inhibitory activities against bacterial and insectile chitinase. The most potent chitinase inhibitor compound 19c exhibited IC50 values of 56 nM and 110 nM against OfChi-h and SmChiB, respectively. The molecular docking and molecular dynamics simulations revealed that all inhibitors were bound to the -1 subsite of chitinases via N-methylcarbamoylguanidinyl as well as argifin. Finally, a bioactivity assay against pests was carried out. Compound 18a showed 80% mortality for Mythimna separata at a concentration of 50 mg/L. Besides, insecticides 19b and 19c exhibited high mortality against Plutella xylostella (76 and 73% mortalities at 50 mg/L, respectively).
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Affiliation(s)
- Zhixiang Zhao
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Qingbo Xu
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Wei Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
- Guangdong Laboratory for Lingnan Modern Agriculture (Shenzhen Branch), Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Siming Wang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Qing Yang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
- Guangdong Laboratory for Lingnan Modern Agriculture (Shenzhen Branch), Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Yanhong Dong
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Jianjun Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
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28
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The Role of Chitooligosaccharidolytic β- N-Acetylglucosamindase in the Molting and Wing Development of the Silkworm Bombyx mori. Int J Mol Sci 2022; 23:ijms23073850. [PMID: 35409210 PMCID: PMC8998872 DOI: 10.3390/ijms23073850] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/21/2022] [Accepted: 03/27/2022] [Indexed: 02/01/2023] Open
Abstract
The insect glycoside hydrolase family 20 β-N-acetylhexosaminidases (HEXs) are key enzymes involved in chitin degradation. In this study, nine HEX genes in Bombyx mori were identified by genome-wide analysis. Bioinformatic analysis based on the transcriptome database indicated that each gene had a distinct expression pattern. qRT-PCR was performed to detect the expression pattern of the chitooligosaccharidolytic β-N-acetylglucosaminidase (BmChiNAG). BmChiNAG was highly expressed in chitin-rich tissues, such as the epidermis. In the wing disc and epidermis, BmChiNAG has the highest expression level during the wandering stage. CRISPR/Cas9-mediated BmChiNAG deletion was used to study the function. In the BmChiNAG-knockout line, 39.2% of female heterozygotes had small and curly wings. The ultrastructure of a cross-section showed that the lack of BmChiNAG affected the stratification of the wing membrane and the formation of the correct wing vein structure. The molting process of the homozygotes was severely hindered during the larva to pupa transition. Epidermal sections showed that the endocuticle of the pupa was not degraded in the mutant. These results indicate that BmChiNAG is involved in chitin catabolism and plays an important role in the molting and wing development of the silkworm, which highlights the potential of BmChiNAG as a pest control target.
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Dong J, Gao W, Li K, Hong Z, Tang L, Han L, Wang Z, Fan Z. Design, Synthesis, and Biological Evaluation of Novel Psoralen-Based 1,3,4-Oxadiazoles as Potent Fungicide Candidates Targeting Pyruvate Kinase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:3435-3446. [PMID: 35271258 DOI: 10.1021/acs.jafc.1c07911] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Pyruvate kinase (PK) has been considered as a promising fungicide target discovered in our previous studies. Natural compounds are important sources for discovery and development of new pesticides. To continue our ongoing studies on the discovery of novel PK-targeted fungicides, a series of novel psoralen derivatives including a 1,3,4-oxadiazole moiety were designed by a computer-aided pesticide molecular design method, synthesized, and evaluated for their fungicidal activity. The bioassay results indicated that compounds 11d, 11e, 11g, 11i, and 12a showed excellent in vitro fungicidal activity against Botrytis cinerea with EC50 values of 4.8, 3.3, 6.3, 5.4, and 3.9 μg/mL, respectively. They were more active than the corresponding positive control YZK-C22 [3-(4-methyl-1,2,3-thiadiazol-5-yl)-6-(trichloromethyl)-[1,2,4]-triazolo-[3,4-b][1,3,4]-thiadiazole] (with an EC50 value of 13.4 μg/mL). Compounds 11g and 11i displayed promising in vivo fungicidal activity against B. cinerea with 80 and 70% inhibition at a concentration of 200 μg/mL, respectively. They possessed much higher fungicidal activity than the positive control psoralen and comparable activity with the positive control pyrisoxazole. Enzymatic assays indicated that 11i showed good BcPK inhibition with an IC50 value of 39.6 μmol/L, comparable to the positive control YZK-C22 (32.4 μmol/L). Molecular docking provided a possible binding mode of 11i in the BcPK active site. Our studies suggested that the psoralen-based 1,3,4-oxadiazole 11i could be used as a new fungicidal lead targeting PK for further structural optimization.
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Affiliation(s)
- Jingyue Dong
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, No. 94, Weijin Road, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Wei Gao
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, No. 94, Weijin Road, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Kun Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, No. 94, Weijin Road, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Zeyu Hong
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, No. 94, Weijin Road, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Liangfu Tang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, No. 94, Weijin Road, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Lijun Han
- College of Science, China Agricultural University, Beijing 100193, P. R. China
| | - Zhihong Wang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, No. 94, Weijin Road, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Zhijin Fan
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, No. 94, Weijin Road, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
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30
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Yu JE, Yeo IJ, Son DJ, Yun J, Han SB, Hong JT. Anti-Chi3L1 antibody suppresses lung tumor growth and metastasis through inhibition of M2 polarization. Mol Oncol 2021; 16:2214-2234. [PMID: 34861103 PMCID: PMC9168758 DOI: 10.1002/1878-0261.13152] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/29/2021] [Accepted: 12/01/2021] [Indexed: 11/08/2022] Open
Abstract
Chitinase 3-like 1 (Chi3L1) is associated with various biological processes, such as inflammation, tissue repair, proliferation, cell survival, invasion, and extracellular matrix remodeling. Recent studies indicated that Chi3L1 is critical for cancer development and metastasis. In this study, we demonstrate that Chi3L1 serum and tissue levels were significantly increased in lung cancer patients compared with controls. We previously developed an anti-Chi3L1-humanized antibody, and here, we investigate its antitumor and antimetastatic effect. The anti-Chi3L1 antibody attenuated tumor growth and metastasis both in vitro and in vivo in a lung cancer mouse model. These inhibitory effects are associated with signal transducer and activator of transcription 6 (STAT6)-dependent M2 polarization inhibition. Proteomics analysis revealed that plasminogen (PLG) interacts with Chi3L1 and affects M2 polarization. Chi3L1 plays a critical role in lung cancer progression, and the anti-Chi3L1 antibody could be a new anticancer therapy.
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Affiliation(s)
- Ji Eun Yu
- College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju-si, Korea
| | - In Jun Yeo
- College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju-si, Korea
| | - Dong Ju Son
- College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju-si, Korea
| | - Jaesuk Yun
- College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju-si, Korea
| | - Sang-Bae Han
- College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju-si, Korea
| | - Jin Tae Hong
- College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju-si, Korea
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31
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Lu Q, Xu L, Liu L, Zhou Y, Liu T, Song Y, Ju J, Yang Q. Lynamicin B is a Potential Pesticide by Acting as a Lepidoptera-Exclusive Chitinase Inhibitor. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:14086-14091. [PMID: 34797675 DOI: 10.1021/acs.jafc.1c05385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Insect group h chitinase is a promising target for designing non-target safe pesticides in that it is exclusively distributed in lepidopteran insects, over 80% of which are agricultural pests. In this work, lynamicin B was discovered to be an inhibitor of OfChi-h, the group h chitinase from the lepidopteran pest Ostrinia furnacalis. Lynamicin B was revealed to competitively inhibit OfChi-h with a Ki value of 8.76 μM and does not significantly inhibit other chitinases. The co-crystal structure of lynamicin B and OfChi-h revealed that the dichloroindolyl group of lynamicin B occupies an unexplored pocket below subsites +1 and +2 of the substrate-binding cleft, which is vital for its selectivity. Feeding experiments demonstrated that lynamicin B exhibited high insecticidal activities against other lepidopteran pests Mythimna separata and Spodoptera frugiperda besides O. furnacalis. Moreover, lynamicin B did not affect Trichogramma ostriniae, a natural enemy of O. furnacalis. This study provides a natural-derived potent pesticide for the control of lepidopteran pests, leaving its natural enemy unaffected.
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Affiliation(s)
- Qiong Lu
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China
| | - Liping Xu
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- Academy of Life Science, Sun Yat-sen University, Guangzhou 510275, China
| | - Lin Liu
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China
| | - Yong Zhou
- School of Software, Dalian University of Technology, Dalian 116024, China
| | - Tian Liu
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China
| | - Yongxiang Song
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Jianhua Ju
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Qing Yang
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
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32
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Li W, Ding Y, Qi H, Liu T, Yang Q. Discovery of Natural Products as Multitarget Inhibitors of Insect Chitinolytic Enzymes through High-Throughput Screening. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:10830-10837. [PMID: 34496207 DOI: 10.1021/acs.jafc.1c03629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Small-molecule inhibitors of insect chitinolytic enzymes are potential insecticides. However, the reported inhibitors that target one enzyme usually exhibit unsatisfactory bioactivity. On the basis of the multitarget strategy, we performed a high-throughput screening of a natural product library to find insecticide leads against four chitinolytic enzymes from the Asian corn borer Ostrinia furnacalis (OfChtI, OfChtII, OfChi-h, and OfHex1). Several phytochemicals were discovered to be multitarget inhibitors of these enzymes and were predicted to occupy the -1 substrate-binding subsite and engage in polar interactions with catalytically important residues. Shikonin and wogonin, which had good inhibitory activities toward all four enzymes, also exhibited significant insecticidal activities against lepidopteran agricultural pests. This study provides the first example of using a multitarget high-throughput screening strategy to exploit natural products as insecticide leads against chitin biodegradation during insect molting.
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Affiliation(s)
- Wenqin Li
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China
| | - Yi Ding
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China
| | - Huitang Qi
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China
| | - Tian Liu
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China
| | - Qing Yang
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
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33
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Han Q, Wu N, Li HL, Zhang JY, Li X, Deng MF, Zhu K, Wang JE, Duan HX, Yang Q. A Piperine-Based Scaffold as a Novel Starting Point to Develop Inhibitors against the Potent Molecular Target OfChtI. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:7534-7544. [PMID: 34185539 DOI: 10.1021/acs.jafc.0c08119] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The insect chitinase OfChtI from the agricultural pest Ostrinia furnacalis (Asian corn borer) is a promising target for green insecticide design. OfChtI is a critical chitinolytic enzyme for the cuticular chitin degradation at the stage of molting. In this study, piperine, a natural amide compound isolated from black pepper, Piper nigrum L., was discovered for the first time to have inhibitory activity toward OfChtI. The compound-enzyme interaction was presumed to take place between the piperine benzo[d][1,3] dioxole skeleton and subsite -1 of the substrate-binding pocket of OfChtI. Hence, on the basis of the deduced inhibitory mechanism and crystal structure of the substrate-binding cavity of OfChtI, compounds 5a-f were designed and synthesized by introducing a butenolide scaffold into the lead compound piperine. The enzymatic activity assay indicated that compounds 5a-f (Ki = 1.03-2.04 μM) exhibited approximately 40-80-fold higher inhibitory activity than the lead compound piperine (I) (Ki = 81.45 μM) toward OfChtI. The inhibitory mechanism of the piperonyl butenolide compounds was elucidated by molecular dynamics, which demonstrated that the introduced butenolide skeleton improved the binding affinity to OfChtI. Moreover, the in vivo activity assay indicated that these compounds also displayed moderate insecticidal activity toward O. furnacalis. This work introduces the natural product piperine as a starting point for the development of novel insecticides targeting OfChtI.
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Affiliation(s)
- Qing Han
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Nan Wu
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning 116024, People's Republic of China
| | - Hui-Lin Li
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Jing-Yu Zhang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Xiang Li
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Ming-Fei Deng
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Kai Zhu
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Jin-E Wang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Hong-Xia Duan
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Qing Yang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection and Shenzhen Agricultural Genome Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning 116024, People's Republic of China
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34
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Chen W, Chen Q, Kumar A, Jiang X, Zhang KYJ, Yang Q. Structure-based virtual screening of highly potent inhibitors of the nematode chitinase CeCht1. J Enzyme Inhib Med Chem 2021; 36:1198-1204. [PMID: 34074203 PMCID: PMC8174485 DOI: 10.1080/14756366.2021.1931862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Nematode chitinases play vital roles in various physiological processes, including egg hatching, larva moulting, and reproduction. Small-molecule inhibitors of nematode chitinases have potential applications for controlling nematode pests. On the basis of the crystal structure of CeCht1, a representative chitinase indispensable to the eggshell chitin degradation of the model nematode Caenorhabditis elegans, we have discovered a series of novel inhibitors bearing a (R)-3,4-diphenyl-4,5-dihydropyrrolo[3,4-c]pyrazol-6(2H)-one scaffold by hierarchical virtual screening. The crystal structures of CeCht1 complexed with two of these inhibitors clearly elucidated their interactions with the enzyme active site. Based on the inhibitory mechanism, several analogues with improved inhibitory activities were identified, among which the compound PP28 exhibited the most potent activity with a Ki value of 0.18 μM. This work provides the structural basis for the development of novel nematode chitinase inhibitors.
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Affiliation(s)
- Wei Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Qi Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Ashutosh Kumar
- Laboratory for Structural Bioinformatics, Center for Biosystems Dynamics Research, RIKEN, Yokohama, Japan
| | - Xi Jiang
- Guangdong Laboratory for Lingnan Modern Agriculture (Shenzhen Branch), Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Kam Y J Zhang
- Laboratory for Structural Bioinformatics, Center for Biosystems Dynamics Research, RIKEN, Yokohama, Japan
| | - Qing Yang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.,Guangdong Laboratory for Lingnan Modern Agriculture (Shenzhen Branch), Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China.,School of Bioengineering, Dalian University of Technology, Dalian, China
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35
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Li Y, Liu L, Yang J, Yang Q. An overall look at insect chitin deacetylases: Promising molecular targets for developing green pesticides. JOURNAL OF PESTICIDE SCIENCE 2021; 46:43-52. [PMID: 33746545 PMCID: PMC7953033 DOI: 10.1584/jpestics.d20-085] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 12/30/2020] [Indexed: 06/12/2023]
Abstract
Chitin deacetylase (CDA) is a key enzyme involved in the modification of chitin and plays critical roles in molting and pupation, which catalyzes the removal of acetyl groups from N-acetyl-D-glucosamine residues in chitin to form chitosan and release acetic acid. Defects in the CDA genes or their expression may lead to stunted insect development and even death. Therefore, CDA can be used as a potential pest control target. However, there are no effective pesticides known to target CDA. Although there has been some exciting research progress on bacterial or fungal CDAs, insect CDA characteristics are less understood. This review summarizes the current understanding of insect CDAs, especially very recent advances in our understanding of crystal structures and the catalytic mechanism. Progress in developing small-molecule CDA inhibitors is also summarized. We hope the information included in this review will help facilitate new pesticide development through a novel action mode, such as targeting CDA.
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Affiliation(s)
- Yingchen Li
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning 116024, China
| | - Lin Liu
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning 116024, China
| | - Jun Yang
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning 116024, China
| | - Qing Yang
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning 116024, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection and Shenzhen Agricultural Genome Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100193, China
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36
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Li X, Yang X, Zheng X, Bai M, Hu D. Review on Structures of Pesticide Targets. Int J Mol Sci 2020; 21:E7144. [PMID: 32998191 PMCID: PMC7582455 DOI: 10.3390/ijms21197144] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 09/23/2020] [Accepted: 09/25/2020] [Indexed: 12/12/2022] Open
Abstract
Molecular targets play important roles in agrochemical discovery. Numerous pesticides target the key proteins in pathogens, insect, or plants. Investigating ligand-binding pockets and/or active sites in the proteins' structures is usually the first step in designing new green pesticides. Thus, molecular target structures are extremely important for the discovery and development of such pesticides. In this manuscript, we present a review of the molecular target structures, including those of antiviral, fungicidal, bactericidal, insecticidal, herbicidal, and plant growth-regulator targets, currently used in agrochemical research. The data will be helpful in pesticide design and the discovery of new green pesticides.
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Affiliation(s)
- Xiangyang Li
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China;
| | - Xueqing Yang
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China;
| | - Xiaodong Zheng
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China;
| | - Miao Bai
- College of Horticulture, Hunan Agricultural University, Changsha 410128, China;
| | - Deyu Hu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China;
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