1
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Jacobsen A, Siebler J, Grützmann R, Stürzl M, Naschberger E. Blood Vessel-Targeted Therapy in Colorectal Cancer: Current Strategies and Future Perspectives. Cancers (Basel) 2024; 16:890. [PMID: 38473252 DOI: 10.3390/cancers16050890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/06/2024] [Accepted: 02/10/2024] [Indexed: 03/14/2024] Open
Abstract
The vasculature is a key player and regulatory component in the multicellular microenvironment of solid tumors and, consequently, a therapeutic target. In colorectal carcinoma (CRC), antiangiogenic treatment was approved almost 20 years ago, but there are still no valid predictors of response. In addition, treatment resistance has become a problem. Vascular heterogeneity and plasticity due to species-, organ-, and milieu-dependent phenotypic and functional differences of blood vascular cells reduced the hope of being able to apply a standard approach of antiangiogenic therapy to all patients. In addition, the pathological vasculature in CRC is characterized by heterogeneous perfusion, impaired barrier function, immunosuppressive endothelial cell anergy, and metabolic competition-induced microenvironmental stress. Only recently, angiocrine proteins have been identified that are specifically released from vascular cells and can regulate tumor initiation and progression in an autocrine and paracrine manner. In this review, we summarize the history and current strategies for applying antiangiogenic treatment and discuss the associated challenges and opportunities, including normalizing the tumor vasculature, modulating milieu-dependent vascular heterogeneity, and targeting functions of angiocrine proteins. These new strategies could open perspectives for future vascular-targeted and patient-tailored therapy selection in CRC.
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Affiliation(s)
- Anne Jacobsen
- Division of Molecular and Experimental Surgery, Translational Research Center, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Kussmaulallee 12, D-91054 Erlangen, Germany
- Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), D-91054 Erlangen, Germany
- Department of General and Visceral Surgery, Universitätsklinikum Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), D-91054 Erlangen, Germany
| | - Jürgen Siebler
- Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), D-91054 Erlangen, Germany
- Department of Medicine 1-Gastroenterology, Universitätsklinikum Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), D-91054 Erlangen, Germany
| | - Robert Grützmann
- Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), D-91054 Erlangen, Germany
- Department of General and Visceral Surgery, Universitätsklinikum Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), D-91054 Erlangen, Germany
| | - Michael Stürzl
- Division of Molecular and Experimental Surgery, Translational Research Center, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Kussmaulallee 12, D-91054 Erlangen, Germany
- Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), D-91054 Erlangen, Germany
| | - Elisabeth Naschberger
- Division of Molecular and Experimental Surgery, Translational Research Center, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Kussmaulallee 12, D-91054 Erlangen, Germany
- Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), D-91054 Erlangen, Germany
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2
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Watanabe N, Saito-Nakano Y, Kurisawa N, Otomo K, Suenaga K, Nakano K, Nozaki T. Fumagillin inhibits growth of the enteric protozoan parasite Entamoeba histolytica by covalently binding to and selectively inhibiting methionine aminopeptidase 2. Antimicrob Agents Chemother 2023; 67:e0056023. [PMID: 37874291 PMCID: PMC10648944 DOI: 10.1128/aac.00560-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 08/27/2023] [Indexed: 10/25/2023] Open
Abstract
Amebiasis is an important cause of morbidity and mortality worldwide, and caused by infection with the protozoan parasite Entamoeba histolytica. Metronidazole is currently the first-line drug despite adverse effects and concerns on the emergence of drug resistance. Fumagillin, a fungal metabolite from Aspergillus fumigatus, and its structurally related natural and synthetic compounds have been previously explored as potential anti-angiogenesis inhibitors for cancers, anti-microbial, and anti-obese compounds. Although fumagillin was used for human amebiasis in clinical trials in 1950s, the mode of action of fumagillin remains elusive until now. In this report, we showed that fumagillin covalently binds to methionine aminopeptidase 2 (MetAP2) and non-covalently but abundantly binds to patatin family phospholipase A (PLA). Susceptibility against fumagillin of the amebic strains in which expression of E. histolytica MetAP2 (EhMetAP2) gene was silenced increased compared to control strain. Conversely, overexpression of EhMetAP2 mutants that harbors amino acid substitutions responsible for resistance to ovalicin, a fumagillin analog, in human MetAP2, also resulted in decrease in fumagillin susceptibility. In contrast, neither gene silencing nor overexpression of E. histolytica PLA (EhPLA) affected fumagillin susceptibility. These data suggest that EhPLA is not essential and not the target of fumagillin for its amebicidal activity. Taken together, our data have demonstrated that EhMetAP2 is the primary target for amebicidal activity of fumagillin, and EhMetAP2 represents a rational explorable target for the development of alternative therapeutic agents against amebiasis.
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Affiliation(s)
- Natsuki Watanabe
- Department of Biomedical Chemistry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yumiko Saito-Nakano
- Department of Parasitology and Antimicrobial Resistance Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Naoaki Kurisawa
- Department of Chemistry, Faculty of Science and Technology, Keio University, Kanagawa, Japan
| | - Keisuke Otomo
- Department of Chemistry, Faculty of Science and Technology, Keio University, Kanagawa, Japan
| | - Kiyotake Suenaga
- Department of Chemistry, Faculty of Science and Technology, Keio University, Kanagawa, Japan
| | - Kentaro Nakano
- Degree Programs in Biology, Graduate School of Science and Technology, University of Tsukuba, Ibaraki, Japan
| | - Tomoyoshi Nozaki
- Department of Biomedical Chemistry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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3
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Zhgun AA. Fungal BGCs for Production of Secondary Metabolites: Main Types, Central Roles in Strain Improvement, and Regulation According to the Piano Principle. Int J Mol Sci 2023; 24:11184. [PMID: 37446362 PMCID: PMC10342363 DOI: 10.3390/ijms241311184] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 06/28/2023] [Accepted: 07/03/2023] [Indexed: 07/15/2023] Open
Abstract
Filamentous fungi are one of the most important producers of secondary metabolites. Some of them can have a toxic effect on the human body, leading to diseases. On the other hand, they are widely used as pharmaceutically significant drugs, such as antibiotics, statins, and immunosuppressants. A single fungus species in response to various signals can produce 100 or more secondary metabolites. Such signaling is possible due to the coordinated regulation of several dozen biosynthetic gene clusters (BGCs), which are mosaically localized in different regions of fungal chromosomes. Their regulation includes several levels, from pathway-specific regulators, whose genes are localized inside BGCs, to global regulators of the cell (taking into account changes in pH, carbon consumption, etc.) and global regulators of secondary metabolism (affecting epigenetic changes driven by velvet family proteins, LaeA, etc.). In addition, various low-molecular-weight substances can have a mediating effect on such regulatory processes. This review is devoted to a critical analysis of the available data on the "turning on" and "off" of the biosynthesis of secondary metabolites in response to signals in filamentous fungi. To describe the ongoing processes, the model of "piano regulation" is proposed, whereby pressing a certain key (signal) leads to the extraction of a certain sound from the "musical instrument of the fungus cell", which is expressed in the production of a specific secondary metabolite.
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Affiliation(s)
- Alexander A Zhgun
- Group of Fungal Genetic Engineering, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences, Leninsky Prosp. 33-2, 119071 Moscow, Russia
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4
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Prasad SK, Bhat SS, Koskowska O, Sangta J, Ahmad SF, Nadeem A, Sommano SR. Naringin from Coffee Inhibits Foodborne Aspergillus fumigatus via the NDK Pathway: Evidence from an In Silico Study. Molecules 2023; 28:5189. [PMID: 37446851 DOI: 10.3390/molecules28135189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/28/2023] [Accepted: 06/30/2023] [Indexed: 07/15/2023] Open
Abstract
In the tropics, coffee has been one of the most extensively cultivated economic crops, especially Arabica coffee (Coffea arabica L.). The coffee pulp, which includes phytochemicals with a proven antifungal action, is one of the most insufficiently utilized and neglected byproducts of coffee refining. In the current experiment, we carried out in silico screening of the isolated Arabica coffee phytochemicals for antifungal activity against Aspergillus fumigatus: a foodborne fungus of great public health importance. As determined by the molecular docking interactions of the library compounds indicated, the best interactions were found to occur between the nucleoside-diphosphate kinase protein 6XP7 and the test molecules Naringin (-6.771 kcal/mol), followed by Epigallocatechin gallate (-5.687 kcal/mol). Therefore, Naringin was opted for further validation with molecular dynamic simulations. The ligand-protein complex RMSD indicated a fairly stable Naringin-NDK ligand-protein complex throughout the simulation period (2-16 Å). In ADME and gastrointestinal absorbability testing, Naringin was observed to be orally bioavailable, with very low intestinal absorption and a bioavailability score of 0.17. This was further supported by the boiled egg analysis data, which clearly indicated that the GI absorption of the Naringin molecule was obscure. We found that naringin could be harmful only when swallowed at a median lethal dose between 2000 and 5000 mg/kg. In accordance with these findings, the toxicity prediction reports suggested that Naringin, found especially in citrus fruits and tomatoes, is safe for human consumption after further investigation. Overall, Naringin may be an ideal candidate for developing anti-A. fumigatus treatments and food packaging materials. Thus, this study addresses the simultaneous problems of discarded coffee waste management and antifungal resistance to available medications.
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Affiliation(s)
- Shashanka K Prasad
- Department of Biotechnology and Bioinformatics, JSS Academy of Higher Education and Research, Mysuru 570 015, India
- Plant Bioactive Compound Laboratory, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50100, Thailand
| | - Smitha S Bhat
- Department of Biotechnology and Bioinformatics, JSS Academy of Higher Education and Research, Mysuru 570 015, India
| | - Olga Koskowska
- Department of Vegetable and Medicinal Plants, Institute of Horticulture Sciences, Warsaw University of Life Sciences-SGGW, 16602-787 Warsaw, Poland
| | - Jiraporn Sangta
- Plant Bioactive Compound Laboratory, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50100, Thailand
- Interdisciplinary Program in Biotechnology, Graduate School, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Sheikh F Ahmad
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ahmed Nadeem
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Sarana Rose Sommano
- Plant Bioactive Compound Laboratory, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50100, Thailand
- Department of Plant and Soil Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand
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5
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Bai X, Sheng Y, Tang Z, Pan J, Wang S, Tang B, Zhou T, Shi L, Zhang H. Polyketides as Secondary Metabolites from the Genus Aspergillus. J Fungi (Basel) 2023; 9:261. [PMID: 36836375 PMCID: PMC9962652 DOI: 10.3390/jof9020261] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/10/2023] [Accepted: 02/13/2023] [Indexed: 02/18/2023] Open
Abstract
Polyketides are an important class of structurally diverse natural products derived from a precursor molecule consisting of a chain of alternating ketone and methylene groups. These compounds have attracted the worldwide attention of pharmaceutical researchers since they are endowed with a wide array of biological properties. As one of the most common filamentous fungi in nature, Aspergillus spp. is well known as an excellent producer of polyketide compounds with therapeutic potential. By extensive literature search and data analysis, this review comprehensively summarizes Aspergillus-derived polyketides for the first time, regarding their occurrences, chemical structures and bioactivities as well as biosynthetic logics.
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Affiliation(s)
- Xuelian Bai
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Yue Sheng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Zhenxing Tang
- School of Culinary Arts, Tourism College of Zhejiang, Hangzhou 311231, China
| | - Jingyi Pan
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Shigui Wang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Bin Tang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Ting Zhou
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Lu’e Shi
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Huawei Zhang
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China
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6
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Kunat-Budzyńska M, Budzyński M, Schulz M, Strachecka A, Gancarz M, Rusinek R, Ptaszyńska AA. Natural Substances, Probiotics, and Synthetic Agents in the Treatment and Prevention of Honeybee Nosemosis. Pathogens 2022; 11:pathogens11111269. [PMID: 36365020 PMCID: PMC9697638 DOI: 10.3390/pathogens11111269] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/27/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022] Open
Abstract
Honeybees are important pollinators, but they are continuously exposed to a variety of fungal and bacterial diseases. One of the various diseases affecting honeybees is nosemosis caused by microsporidia from the Nosema genus. Honeybees are mainly infected through consumption of infected food or faeces containing Nosema spp. spores. Nosemosis causes damage to the middle intestine epithelium, which leads to food absorption disorders and honeybee malnutrition. Fumagillin, i.e., the antibiotic used to treat nosemosis, was withdrawn in 2016 from EU countries. Therefore, researchers have been looking for compounds of both natural and synthetic origin to fight nosemosis. Such compounds should not have a negative impact on bees but is expected to inhibit the disease. Natural compounds tested against nosemosis include, e.g., essential oils (EOs), plant extracts, propolis, and bacterial metabolites, while synthetic substances tested as anti-nosemosis agents are represented by porphyrins, vitamins, antibiotics, phenolic, ascorbic acids, and others. This publication presents an 18-year overview of various studies of a number of natural and synthetic compounds used in the treatment and prevention of nosemosis cited in PubMed, GoogleScholar, and CrossRef.
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Affiliation(s)
- Magdalena Kunat-Budzyńska
- Department of Immunobiology, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland
| | - Michał Budzyński
- Department of Immunobiology, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland
| | - Michał Schulz
- Department of Invertebrate Ecophysiology and Experimental Biology, University of Life Sciences in Lublin, Doświadczalna 50a, 20-280 Lublin, Poland
| | - Aneta Strachecka
- Department of Invertebrate Ecophysiology and Experimental Biology, University of Life Sciences in Lublin, Doświadczalna 50a, 20-280 Lublin, Poland
| | - Marek Gancarz
- Faculty of Production and Power Engineering, University of Agriculture in Krakow, Balicka 116B, 30-149 Krakow, Poland
- Institute of Agrophysics Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland
| | - Robert Rusinek
- Institute of Agrophysics Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland
| | - Aneta A. Ptaszyńska
- Department of Immunobiology, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland
- Correspondence:
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7
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Li J, Cai Z, Li XW, Zhuang C. Natural Product-Inspired Targeted Protein Degraders: Advances and Perspectives. J Med Chem 2022; 65:13533-13560. [PMID: 36205223 DOI: 10.1021/acs.jmedchem.2c01223] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Targeted protein degradation (TPD), a promising therapeutic strategy in drug discovery, has great potential to regulate the endogenous degradation of undruggable targets with small molecules. As vital resources that provide diverse structural templates for drug discovery, natural products (NPs) are a rising and robust arsenal for the development of therapeutic TPD. The first proof-of-concept study of proteolysis-targeting chimeras (PROTACs) was a natural polyketide ovalicin-derived degrader; since then, NPs have shown great potential to promote TPD technology. The use of NP-inspired targeted protein degraders has been confirmed to be a promising strategy to treat many human conditions, including cancer, inflammation, and nonalcoholic fatty liver disease. Nevertheless, the development of NP-inspired degraders is challenging, and the field is currently in its infancy. In this review, we summarize the bioactivities and mechanisms of NP-inspired degraders and discuss the associated challenges and future opportunities in this field.
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Affiliation(s)
- Jiao Li
- Clinical Medicine Scientific and Technical Innovation Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China.,School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Zhenyu Cai
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Xu-Wen Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China.,Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery, Yantai, Shandong 264117, China
| | - Chunlin Zhuang
- Clinical Medicine Scientific and Technical Innovation Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China.,School of Pharmacy, Second Military Medical University, Shanghai 200433, China
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8
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Jenssen M, Kristoffersen V, Motiram-Corral K, Isaksson J, Rämä T, Andersen JH, Hansen EH, Hansen KØ. Chlovalicin B, a Chlorinated Sesquiterpene Isolated from the Marine Mushroom Digitatispora marina. Molecules 2021; 26:molecules26247560. [PMID: 34946641 PMCID: PMC8703342 DOI: 10.3390/molecules26247560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/07/2021] [Accepted: 12/09/2021] [Indexed: 11/16/2022] Open
Abstract
As part of our search for bioactive metabolites from understudied marine microorganisms, the new chlorinated metabolite chlovalicin B (1) was isolated from liquid cultures of the marine basidiomycete Digitatispora marina, which was collected and isolated from driftwood found at Vannøya, Norway. The structure of the novel compound was elucidated by spectroscopic methods including 1D and 2D NMR and analysis of HRMS data, revealing that 1 shares its molecular scaffold with a previously isolated compound, chlovalicin. This represents the first compound isolated from the Digitatispora genus, and the first reported fumagillin/ovalicin-like compound isolated from Basidiomycota. Compound 1 was evaluated for antibacterial activities against a panel of five bacteria, its ability to inhibit bacterial biofilm formation, for antifungal activity against Candida albicans, and for cytotoxic activities against malignant and non-malignant human cell lines. Compound 1 displayed weak cytotoxic activity against the human melanoma cell line A2058 (~50% survival at 50 µM). No activity was detected against biofilm formation or C. albicans at 50 µM, or against bacterial growth at 100 µM nor against the production of cytokines by the human acute monocytic leukemia cell line THP-1 at 50 µM.
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Affiliation(s)
- Marte Jenssen
- Marbio, Norwegian College of Fishery Science, UiT—The Arctic University of Norway, N-9037 Tromsø, Norway; (M.J.); (V.K.); (T.R.); (J.H.A.); (E.H.H.)
| | - Venke Kristoffersen
- Marbio, Norwegian College of Fishery Science, UiT—The Arctic University of Norway, N-9037 Tromsø, Norway; (M.J.); (V.K.); (T.R.); (J.H.A.); (E.H.H.)
| | - Kumar Motiram-Corral
- Servei de Ressonància Magnètica Nuclear, Universitat Autònoma de Barcelona, Bellaterra, E-08193 Barcelona, Spain;
| | - Johan Isaksson
- Department of Chemistry, UiT—The Arctic University of Norway, N-9037 Tromsø, Norway;
| | - Teppo Rämä
- Marbio, Norwegian College of Fishery Science, UiT—The Arctic University of Norway, N-9037 Tromsø, Norway; (M.J.); (V.K.); (T.R.); (J.H.A.); (E.H.H.)
| | - Jeanette H. Andersen
- Marbio, Norwegian College of Fishery Science, UiT—The Arctic University of Norway, N-9037 Tromsø, Norway; (M.J.); (V.K.); (T.R.); (J.H.A.); (E.H.H.)
| | - Espen H. Hansen
- Marbio, Norwegian College of Fishery Science, UiT—The Arctic University of Norway, N-9037 Tromsø, Norway; (M.J.); (V.K.); (T.R.); (J.H.A.); (E.H.H.)
| | - Kine Østnes Hansen
- Marbio, Norwegian College of Fishery Science, UiT—The Arctic University of Norway, N-9037 Tromsø, Norway; (M.J.); (V.K.); (T.R.); (J.H.A.); (E.H.H.)
- Correspondence: ; Tel.: +47-7-764-9272
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9
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González O, Yaldebere A, Guruceaga X, Ramírez-García A, Rementeria A, Alonso RM. A novel SPE-UHPLC-DAD method for the determination of fumagillin produced by Aspergillus fumigatus in cell culture media. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Choo KL, Mirabi B, Demmans KZ, Lautens M. Enantioselective Synthesis of Spiro-oxiranes: An Asymmetric Addition/Aldol/Spirocyclization Domino Cascade. Angew Chem Int Ed Engl 2021; 60:21189-21194. [PMID: 34324779 DOI: 10.1002/anie.202105562] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Indexed: 01/11/2023]
Abstract
Enantioenriched spiro-oxiranes bearing three contiguous stereocenters were synthesized using a rhodium-catalyzed asymmetric addition/aldol/spirocyclization sequence. Starting from a linear substrate, the cascade enabled the formation of a spirocyclic framework in a single step. sp2 - and sp-hybridized carbon nucleophiles were found to be competent initiators for this cascade, giving arylated or alkynylated products, respectively. Derivatization studies demonstrated the synthetic versatility of both the epoxide and the alkyne moieties of the products. DFT calculations were used to reconcile spectroscopic discrepancies observed between the solution- and solid-state structures of the products.
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Affiliation(s)
- Ken-Loon Choo
- Davenport Chemical Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario, M5S 3H6, Canada
| | - Bijan Mirabi
- Davenport Chemical Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario, M5S 3H6, Canada
| | - Karl Z Demmans
- Davenport Chemical Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario, M5S 3H6, Canada
| | - Mark Lautens
- Davenport Chemical Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario, M5S 3H6, Canada
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11
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Choo K, Mirabi B, Demmans KZ, Lautens M. Enantioselective Synthesis of Spiro‐oxiranes: An Asymmetric Addition/Aldol/Spirocyclization Domino Cascade. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ken‐Loon Choo
- Davenport Chemical Laboratories Department of Chemistry University of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
| | - Bijan Mirabi
- Davenport Chemical Laboratories Department of Chemistry University of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
| | - Karl Z. Demmans
- Davenport Chemical Laboratories Department of Chemistry University of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
| | - Mark Lautens
- Davenport Chemical Laboratories Department of Chemistry University of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
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12
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Naree S, Benbow ME, Suwannapong G, Ellis JD. Mitigating Nosema ceranae infection in western honey bee (Apis mellifera) workers using propolis collected from honey bee and stingless bee (Tetrigona apicalis) hives. J Invertebr Pathol 2021; 185:107666. [PMID: 34530028 DOI: 10.1016/j.jip.2021.107666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 09/01/2021] [Accepted: 09/08/2021] [Indexed: 11/15/2022]
Abstract
Beekeepers need sustainable control options to treat Nosema ceranae infection in colonies of western honey bees (Apis mellifera L.) they manage. Propolis is a natural product derived from plant resins and contains chemical compounds with potential antimicrobial activity against N. ceranae. Here, we determined the efficacy of propolis from A. mellifera (USA) and Tetrigona apicalis (stingless bees, Thailand) colonies as treatments for N. ceranae infection in honey bee workers. Newly emerged bees were individually fed 2 μL of 50% (w/v) sucrose solution containing 1 × 105N. ceranae spores. Following this, the infected bees were treated with 50% propolis extracted from A. mellifera or T. apicalis hives and fed in 50% sucrose solution (v/v). All bees were maintained at 34 ± 2 °C and 55 ± 5% RH. Dead bees were counted daily for 30 d to calculate survival. We also determined infection rate (# infected bees/100 bees), infectivity (number of spores per bee) and protein content in the hypopharyngeal glands and hemolymph on 7, 14, and 21 d post infection as measures of bee health. Propolis from both bee species significantly reduced bee mortality, infection rate and infectivity compared with those of untreated bees and led to significantly greater protein contents in hypopharyngeal glands and hemolymph in treated bees than in untreated ones (p < 0.0001). In conclusion, propolis from A. mellifera and T. apicalis colonies shows promise as a control against N. ceranae infection in honey bees.
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Affiliation(s)
- Sanchai Naree
- Department of Biology, Faculty of Science, Burapha University, Chon Buri 20131 Thailand
| | - Mark E Benbow
- Department of Entomology and Department of Osteopathic Medical Specialties, Michigan State University, East Lansing, MI 48824, USA
| | - Guntima Suwannapong
- Department of Biology, Faculty of Science, Burapha University, Chon Buri 20131 Thailand
| | - James D Ellis
- Entomology and Nematology Department, University of Florida, Gainesville, FL 32611, USA.
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Boysen JM, Saeed N, Hillmann F. Natural products in the predatory defence of the filamentous fungal pathogen Aspergillus fumigatus. Beilstein J Org Chem 2021; 17:1814-1827. [PMID: 34394757 PMCID: PMC8336654 DOI: 10.3762/bjoc.17.124] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 07/14/2021] [Indexed: 11/30/2022] Open
Abstract
The kingdom of fungi comprises a large and highly diverse group of organisms that thrive in diverse natural environments. One factor to successfully confront challenges in their natural habitats is the capability to synthesize defensive secondary metabolites. The genetic potential for the production of secondary metabolites in fungi is high and numerous potential secondary metabolite gene clusters have been identified in sequenced fungal genomes. Their production may well be regulated by specific ecological conditions, such as the presence of microbial competitors, symbionts or predators. Here we exemplarily summarize our current knowledge on identified secondary metabolites of the pathogenic fungus Aspergillus fumigatus and their defensive function against (microbial) predators.
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Affiliation(s)
- Jana M Boysen
- Junior Research Group Evolution of Microbial Interactions, Leibniz-Institute for Natural Product Research and Infection Biology – Hans Knöll Institute (HKI), Beutenbergstr. 11a, 07745 Jena, Germany
- Institute of Microbiology, Friedrich Schiller University Jena, Jena, Germany
| | - Nauman Saeed
- Junior Research Group Evolution of Microbial Interactions, Leibniz-Institute for Natural Product Research and Infection Biology – Hans Knöll Institute (HKI), Beutenbergstr. 11a, 07745 Jena, Germany
- Institute of Microbiology, Friedrich Schiller University Jena, Jena, Germany
| | - Falk Hillmann
- Junior Research Group Evolution of Microbial Interactions, Leibniz-Institute for Natural Product Research and Infection Biology – Hans Knöll Institute (HKI), Beutenbergstr. 11a, 07745 Jena, Germany
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Maillard A, Scemla A, Laffy B, Mahloul N, Molina JM. Safety and efficacy of fumagillin for the treatment of intestinal microsporidiosis. A French prospective cohort study. J Antimicrob Chemother 2021; 76:487-494. [PMID: 33128055 DOI: 10.1093/jac/dkaa438] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 09/28/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Intestinal microsporidiosis due to Enterocytozoon bieneusi is a cause of chronic diarrhoea in immunocompromised patients. Fumagillin has been approved in France for its treatment. OBJECTIVES To investigate the efficacy and safety of fumagillin in a real-life setting. METHODS As required by the French Medicine Agency, all patients receiving fumagillin were enrolled in a prospective study to evaluate its efficacy and safety. Stool examination with identification of E. bieneusi by PCR was performed at baseline, end of treatment and monthly thereafter for 6 months. Safety was monitored up to 6 months and full blood counts were monitored up to 42 days after treatment initiation. The primary endpoint was safety. Parasite clearance and relapses were secondary endpoints. RESULTS From 2007 to 2018, 166 patients received fumagillin, including 6 children. Patients were transplant recipients (84%), HIV-infected patients (13%) or had another cause of immunosuppression (5%). Serious adverse events were reported in 41 patients (25%), mainly thrombocytopenia (15%) and neutropenia (5%), with two haemorrhagic events leading to one death. Severe thrombocytopenia (<50 G/L) developed in 50 patients (29.6%), neutropenia (<1 G/L) in 20 patients (11.8%) and severe anaemia (<8 g/dL) in 21 patients (12.4%). At the end of treatment, 94% of patients with available stool examination (n = 132) had no spores detected. Among 99 patients with available follow-up after the end of treatment, three parasite relapses were documented. CONCLUSIONS E. bieneusi microsporidiosis was mainly diagnosed in transplant recipients. Fumagillin was associated with haematological toxicity but showed high efficacy with a low relapse rate.
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Affiliation(s)
- Alexis Maillard
- Department of Infectious Diseases, St-Louis Hospital, APHP and University of Paris, France
| | - Anne Scemla
- Kidney Transplant Unit, Hôpital Necker Enfants Malades, APHP and University of Paris, France
| | - Benjamin Laffy
- Kidney Transplant Unit, Hôpital Saint-Louis, APHP and University of Paris, France
| | - Nadir Mahloul
- Medical Department, Sanofi-Aventis France, Gentilly, France
| | - Jean-Michel Molina
- Department of Infectious Diseases, St-Louis Hospital, APHP and University of Paris, France
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Glavinic U, Stevanovic J, Ristanic M, Rajkovic M, Davitkov D, Lakic N, Stanimirovic Z. Potential of Fumagillin and Agaricus blazei Mushroom Extract to Reduce Nosema ceranae in Honey Bees. INSECTS 2021; 12:282. [PMID: 33806001 PMCID: PMC8064457 DOI: 10.3390/insects12040282] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 03/11/2021] [Accepted: 03/13/2021] [Indexed: 01/08/2023]
Abstract
Depending on the infection level and colony strength, Nosema ceranae, a microsporidian endoparasite of the honey bee may have significant consequences on the health, reproduction and productivity of bee colonies. Despite exerting some side effects, fumagillin is most often used for Nosema control. In this study, in a cage experiment, N. ceranae infected bees were treated with fumagillin or the extract of Agaricus blazei mushroom, a possible alternative for Nosema control. Bee survival, Nosema spore loads, the expression levels of immune-related genes and parameters of oxidative stress were observed. Fumagillin treatment showed a negative effect on monitored parameters when applied preventively to non-infected bees, while a noticeable anti-Nosema effect and protection from Nosema-induced immunosuppression and oxidative stress were proven in Nosema-infected bees. However, a protective effect of the natural A. blazei extract was detected, without any side effects but with immunostimulatory activity in the preventive application. The results of this research suggest the potential of A. blazei extract for Nosema control, which needs to be further investigated.
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Affiliation(s)
- Uros Glavinic
- Faculty of Veterinary Medicine, Department of Biology, University of Belgrade, Bul. Oslobodjenja 18, 11000 Belgrade, Serbia; (J.S.); (M.R.); (M.R.); (Z.S.)
| | - Jevrosima Stevanovic
- Faculty of Veterinary Medicine, Department of Biology, University of Belgrade, Bul. Oslobodjenja 18, 11000 Belgrade, Serbia; (J.S.); (M.R.); (M.R.); (Z.S.)
| | - Marko Ristanic
- Faculty of Veterinary Medicine, Department of Biology, University of Belgrade, Bul. Oslobodjenja 18, 11000 Belgrade, Serbia; (J.S.); (M.R.); (M.R.); (Z.S.)
| | - Milan Rajkovic
- Faculty of Veterinary Medicine, Department of Biology, University of Belgrade, Bul. Oslobodjenja 18, 11000 Belgrade, Serbia; (J.S.); (M.R.); (M.R.); (Z.S.)
| | - Dajana Davitkov
- Faculty of Veterinary Medicine, Department of Forensic Veterinary Medicine, University of Belgrade, Bul. Oslobodjenja 18, 11000 Belgrade, Serbia;
| | - Nada Lakic
- Faculty of Agriculture, Department of Statistics, University of Belgrade, Nemanjina 6, 11080 Zemun-Belgrade, Serbia;
| | - Zoran Stanimirovic
- Faculty of Veterinary Medicine, Department of Biology, University of Belgrade, Bul. Oslobodjenja 18, 11000 Belgrade, Serbia; (J.S.); (M.R.); (M.R.); (Z.S.)
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Badart MP, Hawkins BC. Synthetic Strategies to Access Heteroatomic Spirocentres Embedded in Natural Products. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1379-2312] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
AbstractThe spirocyclic motif is abundant in natural products and provides an ideal three-dimensional template to interact with biological targets. With significant attention historically expended on the synthesis of flat-heterocyclic compound libraries, methods to access the less-explored three-dimensional medicinal-chemical space will continue to increase in demand. Herein, we highlight by reaction class the common strategies used to construct the spirocyclic centres embedded in a series of well-studied natural products.1 Introduction2 Cycloadditions3 Palladium-Catalysed Coupling Reactions4 Conjugate Additions5 Imines, Aminals, and Hemiaminal Ethers6 Mannich-Type Reactions7 Oxidative Dearomatisation8 Alkylation9 Organometallic Additions10 Conclusions
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Zhang Y, Koehler AV, Wang T, Gasser RB. Enterocytozoon bieneusi of animals-With an 'Australian twist'. ADVANCES IN PARASITOLOGY 2021; 111:1-73. [PMID: 33482973 DOI: 10.1016/bs.apar.2020.10.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Enterocytozoon bieneusi is a microsporidian microorganism that causes intestinal disease in animals including humans. E. bieneusi is an obligate intracellular pathogen, typically causing severe or chronic diarrhoea, malabsorption and/or wasting. Currently, E. bieneusi is recognised as a fungus, although its exact classification remains contentious. The transmission of E. bieneusi can occur from person to person and/or animals to people. Transmission is usually via the faecal-oral route through E. bieneusi spore-contaminated water, environment or food, or direct contact with infected individuals. Enterocytozoon bieneusi genotypes are usually identified and classified by PCR-based sequencing of the internal transcribed spacer region (ITS) of nuclear ribosomal DNA. To date, ~600 distinct genotypes of E. bieneusi have been recorded in ~170 species of animals, including various orders of mammals and reptiles as well as insects in >40 countries. Moreover, E. bieneusi has also been found in recreational water, irrigation water, and treated raw- and waste-waters. Although many studies have been conducted on the epidemiology of E. bieneusi, prevalence surveys of animals and humans are scant in some countries, such as Australia, and transmission routes of individual genotypes and related risk factors are poorly understood. This article/chapter reviews aspects of the taxonomy, biology and epidemiology of E. bieneusi; the diagnosis, treatment and prevention of microsporidiosis; critically appraises the naming system for E. bieneusi genotypes as well as the phylogenetic relationships of these genotypes; provides new insights into the prevalence and genetic composition of E. bieneusi populations in animals in parts of Australia using molecular epidemiological tools; and proposes some areas for future research in the E. bieneusi/microsporidiosis field.
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Affiliation(s)
- Yan Zhang
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC, Australia
| | - Anson V Koehler
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC, Australia.
| | - Tao Wang
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC, Australia
| | - Robin B Gasser
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC, Australia.
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Shaikh SKJ, Kamble RR, Bayannavar PK, Somagond SM, Joshi SD. Triazolothiadizepinylquinolines as potential MetAP-2 and NMT inhibitors: Microwave-assisted synthesis, pharmacological evaluation and molecular docking studies. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127445] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Guruceaga X, Perez-Cuesta U, Abad-Diaz de Cerio A, Gonzalez O, Alonso RM, Hernando FL, Ramirez-Garcia A, Rementeria A. Fumagillin, a Mycotoxin of Aspergillus fumigatus: Biosynthesis, Biological Activities, Detection, and Applications. Toxins (Basel) 2019; 12:E7. [PMID: 31861936 PMCID: PMC7020470 DOI: 10.3390/toxins12010007] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 12/17/2019] [Accepted: 12/18/2019] [Indexed: 12/26/2022] Open
Abstract
Fumagillin is a mycotoxin produced, above all, by the saprophytic filamentous fungus Aspergillus fumigatus. This mold is an opportunistic pathogen that can cause invasive aspergillosis, a disease that has high mortality rates linked to it. Its ability to adapt to environmental stresses through the production of secondary metabolites, including several mycotoxins (gliotoxin, fumagillin, pseurotin A, etc.) also seem to play an important role in causing these infections. Since the discovery of the A. fumigatus fumagillin in 1949, many studies have focused on this toxin and in this review we gather all the information currently available. First of all, the structural characteristics of this mycotoxin and the different methods developed for its determination are given in detail. Then, the biosynthetic gene cluster and the metabolic pathway involved in its production and regulation are explained. The activity of fumagillin on its target, the methionine aminopeptidase type 2 (MetAP2) enzyme, and the effects of blocking this enzyme in the host are also described. Finally, the applications that this toxin and its derivatives have in different fields, such as the treatment of cancer and its microsporicidal activity in the treatment of honeybee hive infections with Nosema spp., are reviewed. Therefore, this work offers a complete review of all the information currently related to the fumagillin mycotoxin secreted by A. fumigatus, important because of its role in the fungal infection process but also because it has many other applications, notably in beekeeping, the treatment of infectious diseases, and in oncology.
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Affiliation(s)
- Xabier Guruceaga
- Fungal and Bacterial Biomics Research Group, Department of Immunology, Microbiology and Parasitology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Spain; (X.G.); (U.P.-C.); (A.A.-D.d.C.); (F.L.H.)
| | - Uxue Perez-Cuesta
- Fungal and Bacterial Biomics Research Group, Department of Immunology, Microbiology and Parasitology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Spain; (X.G.); (U.P.-C.); (A.A.-D.d.C.); (F.L.H.)
| | - Ana Abad-Diaz de Cerio
- Fungal and Bacterial Biomics Research Group, Department of Immunology, Microbiology and Parasitology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Spain; (X.G.); (U.P.-C.); (A.A.-D.d.C.); (F.L.H.)
| | - Oskar Gonzalez
- FARMARTEM Group, Department of Analytical Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Spain; (O.G.); (R.M.A.)
| | - Rosa M. Alonso
- FARMARTEM Group, Department of Analytical Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Spain; (O.G.); (R.M.A.)
| | - Fernando Luis Hernando
- Fungal and Bacterial Biomics Research Group, Department of Immunology, Microbiology and Parasitology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Spain; (X.G.); (U.P.-C.); (A.A.-D.d.C.); (F.L.H.)
| | - Andoni Ramirez-Garcia
- Fungal and Bacterial Biomics Research Group, Department of Immunology, Microbiology and Parasitology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Spain; (X.G.); (U.P.-C.); (A.A.-D.d.C.); (F.L.H.)
| | - Aitor Rementeria
- Fungal and Bacterial Biomics Research Group, Department of Immunology, Microbiology and Parasitology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Spain; (X.G.); (U.P.-C.); (A.A.-D.d.C.); (F.L.H.)
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Natural product derivatization with β-lactones, β-lactams and epoxides toward ‘infinite’ binders. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.04.068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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21
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Al-Fakih AA, Almaqtri WQA. Overview on antibacterial metabolites from terrestrial Aspergillus spp. Mycology 2019; 10:191-209. [PMID: 31632829 PMCID: PMC6781474 DOI: 10.1080/21501203.2019.1604576] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 03/31/2019] [Indexed: 12/12/2022] Open
Abstract
Medicines developed from natural sources are a frequent target for the research and discovery of antimicrobial compounds. Discovering of penicillin in 1928 was a motive to explore of nature as a source of new antimicrobial agents. Fungi produce a diverse range of bioactive metabolites, making them rich source of different types of medicines. The purpose of this paper was to review studies on antibacterials from terrestrial Aspergillus published exclusively during 1942-2018, with emphasis on their antibacterial activities, structures, and mechanisms of action if present. According to the results from different studies in the world, large number of compounds and extracts showed different activities against different bacterial species, including Gram-positive and Gram-negative bacteria. The most prominent result was that of the compound CJ-17,665, isolated from A. ochraceus, showing good activity against multi-drug resistant Staphylococcus aureus, which is well-recognised to be one of the most important current public health problem. These findings may motivate scientists to undertake a project that may result in the development of novel antibacterial drugs from terrestrial-derived Aspergillus spp., although further toxicity assays (in vivo) must be performed before their application.
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22
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Vasudevan A, Argiriadi MA, Baranczak A, Friedman MM, Gavrilyuk J, Hobson AD, Hulce JJ, Osman S, Wilson NS. Covalent binders in drug discovery. PROGRESS IN MEDICINAL CHEMISTRY 2019; 58:1-62. [PMID: 30879472 DOI: 10.1016/bs.pmch.2018.12.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Covalent modulation of protein function can have multiple utilities including therapeutics, and probes to interrogate biology. While this field is still viewed with scepticism due to the potential for (idiosyncratic) toxicities, significant strides have been made in terms of understanding how to tune electrophilicity to selectively target specific residues. Progress has also been made in harnessing the potential of covalent binders to uncover novel biology and to provide an enhanced utility as payloads for Antibody Drug Conjugates. This perspective covers the tenets and applications of covalent binders.
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Affiliation(s)
| | | | | | | | - Julia Gavrilyuk
- AbbVie Stemcentrx, LLC, South San Francisco, CA, United States
| | | | | | - Sami Osman
- AbbVie Bioresearch Center, Worcester, MA, United States
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23
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Underwood RM, Traver BE, López-Uribe MM. Beekeeping Management Practices Are Associated with Operation Size and Beekeepers' Philosophy towards in-Hive Chemicals. INSECTS 2019; 10:insects10010010. [PMID: 30626023 PMCID: PMC6359672 DOI: 10.3390/insects10010010] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 11/27/2018] [Accepted: 12/21/2018] [Indexed: 11/16/2022]
Abstract
Management by beekeepers is of utmost importance for the health and survival of honey bee colonies. Beekeeping management practices vary from low to high intervention regarding the use of chemicals, hive manipulations, and supplemental feeding of colonies. In this study, we use quantitative data from the Bee Informed Partnership's national survey to investigate drivers of management practices among beekeepers in the United States. This is the first study to quantitatively examine these variables to objectively describe the management practices among different groups of beekeepers in the United States. We hypothesized that management practices and goals among beekeepers are different based on the beekeeper's philosophy (as determined by their willingness to use chemicals to control pests and pathogens) and the size of the beekeeping operation. Using a multiple factor analysis, we determined that beekeepers use a continuum of management practices. However, we found that beekeepers' willingness to use in-hive chemicals and the number of colonies in their operation are non-randomly associated with other aspects of beekeeping management practices. Specifically, the size of the beekeeping operation was associated with beekeepers' choices of in-hive chemicals, while beekeepers' philosophy was most strongly associated with choices of in-hive chemicals and beekeeping goals. Our results will facilitate the development of decision-making tools for beekeepers to choose management practices that are appropriate for the size of their operations and their beekeeping philosophy.
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Affiliation(s)
- Robyn M Underwood
- Department of Entomology, Pennsylvania State University, 501 ASI Building, University Park, PA 16802, USA.
| | - Brenna E Traver
- Department of Biology, Penn State Schuylkill, 200 University Drive, Schuylkill Haven, PA 17972, USA.
| | - Margarita M López-Uribe
- Department of Entomology, Pennsylvania State University, Center for Pollinator Research, University Park, PA 16802, USA.
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24
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Kowalski K. Recent developments in the chemistry of ferrocenyl secondary natural product conjugates. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.04.008] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Marine-Derived Penicillium Species as Producers of Cytotoxic Metabolites. Mar Drugs 2017; 15:md15100329. [PMID: 29064452 PMCID: PMC5666435 DOI: 10.3390/md15100329] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 09/30/2017] [Accepted: 10/09/2017] [Indexed: 12/16/2022] Open
Abstract
Since the discovery of penicillin, Penicillium has become one of the most attractive fungal genera for the production of bioactive molecules. Marine-derived Penicillium has provided numerous excellent pharmaceutical leads over the past decades. In this review, we focused on the cytotoxic metabolites * (* Cytotoxic potency was referred to five different levels in this review, extraordinary (IC50/LD50: <1 μM or 0.5 μg/mL); significant (IC50/LD50: 1~10 μM or 0.5~5 μg/mL); moderate (IC50/LD50: 10~30 μM or 5~15 μg/mL); mild (IC50/LD50: 30~50 μM or 15~25 μg/mL); weak (IC50/LD50: 50~100 μM or 25~50 μg/mL). The comparative potencies of positive controls were referred when they were available). produced by marine-derived Penicillium species, and on their cytotoxicity mechanisms, biosyntheses, and chemical syntheses.
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Abstract
In the history of therapeutics, covalent drugs occupy a very distinct category. While representing a significant fraction of the drugs on the market, very few have been deliberately designed to interact covalently with their biological target. In this review, the prevalence of covalent drugs will first be briefly covered, followed by an introduction to their mechanisms of action and more detailed discussions of their discovery and the development of safe and efficient covalent enzyme inhibitors. All stages of a drug discovery program will be covered, from target considerations to lead optimization, strategies to tune reactivity and computational methods. The goal of this article is to provide an overview of the field and to outline good practices that are needed for the proper assessment and development of covalent inhibitors as well as a good understanding of the potential and limitations of current computational methods for the design of covalent drugs.
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Affiliation(s)
- Stephane De Cesco
- Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montréal, Québec H3A 0B8, Canada
| | - Jerry Kurian
- Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montréal, Québec H3A 0B8, Canada
| | - Caroline Dufresne
- Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montréal, Québec H3A 0B8, Canada
| | - Anthony K Mittermaier
- Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montréal, Québec H3A 0B8, Canada
| | - Nicolas Moitessier
- Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montréal, Québec H3A 0B8, Canada.
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Abstract
Fumagillin, an antimicrobial compound first isolated in 1949 from the fungus Aspergillus fumigatus, four decades later was unexpectedly found to inhibit angiogenesis. Interest in developing angiogenesis inhibitor drugs as possible treatments for cancer led to the synthesis of analogs of fumagillin. Preclinical studies of various analog drugs confirmed that they inhibited angiogenesis, but they also were associated with weight loss as an adverse effect. Because adipose tissue can grow and regress throughout adulthood, is highly vascularized, and has angiogenic properties, interest in investigating anti-angiogenic agents in animal models of obesity found that fumagillin analogs caused dose-dependent reversible weight reduction and adipose tissue loss. Beloranib, a fumagillin analog that is an angiogenesis inhibitor and associated with decreased adiposity in animals, has been studied in phase I clinical trials for cancer. It is currently being investigated for the treatment of obesity and related conditions. Three phase I and three phase II studies found significant degrees of weight loss and acceptable tolerability for beloranib compared to placebo, justifying further clinical development of the drug for obesity.
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An Unusual Stress Metabolite from a Hydrothermal Vent Fungus Aspergillus sp. WU 243 Induced by Cobalt. Molecules 2016; 21:105. [PMID: 26784166 PMCID: PMC6274401 DOI: 10.3390/molecules21010105] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 01/13/2016] [Accepted: 01/14/2016] [Indexed: 12/29/2022] Open
Abstract
A novel hybrid polyketide-terpenoid, aspergstressin (1), possessing a unique fused polycyclic structure, was induced from culture broth of strain Aspergillus sp. WU 243 by cobalt ion stimulation. The strain was isolated from the digestive gland of Xenograpsus testudinatus, a unique type of crab which dwells in the Kueishantao hydrothermal vents off Taiwan. The chemical structure and relative configuration of the stress metabolite were established by spectroscopic means. Aspergillus sp. WU 243 produced aspergstressin (1) only under cobalt stressed culture conditions. The results show that stress-driven discovery of new natural products from hydrothermal vent fungi is an effective strategy to unveil the untapped reservoir of small molecules from species found in the hydrothermal vent environment.
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Sharma R, Lambu MR, Jamwal U, Rani C, Chib R, Wazir P, Mukherjee D, Chaubey A, Khan IA. Escherichia coli N-Acetylglucosamine-1-Phosphate-Uridyltransferase/Glucosamine-1-Phosphate-Acetyltransferase (GlmU) Inhibitory Activity of Terreic Acid Isolated from Aspergillus terreus. ACTA ACUST UNITED AC 2016; 21:342-53. [PMID: 26762501 DOI: 10.1177/1087057115625308] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 11/19/2015] [Indexed: 11/16/2022]
Abstract
Secondary metabolite of Aspergillus terreus, terreic acid, is a reported potent antibacterial that was identified more than 60 years ago, but its cellular target(s) are still unknown. Here we screen its activity against the acetyltransferase domain of a bifunctional enzyme, Escherichia coli N-acetylglucosamine-1-phosphate-uridyltransferase/glucosamine-1-phosphate-acetyltransferase (GlmU). An absorbance-based assay was used to screen terreic acid against the acetyltransferase activity of E. coli GlmU. Terreic acid was found to inhibit the acetyltransferase domain of E. coli GlmU with an IC50 of 44.24 ± 1.85 µM. Mode of inhibition studies revealed that terreic acid was competitive with AcCoA and uncompetitive with GlcN-1-P. It also exhibited concentration-dependent killing of E. coli ATCC 25922 up to 4× minimum inhibitory concentration and inhibited the growth of biofilms generated by E. coli. Characterization of resistant mutants established mutation in the acetyltransferase domain of GlmU. Terreic acid was also found to be metabolically stable in the in vitro incubations with rat liver microsome in the presence of a NADPH regenerating system. The studies reported here suggest that terreic acid is a potent antimicrobial agent and support that E. coli GlmU acetyltransferase is a molecular target of terreic acid, resulting in its antibacterial activity.
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Affiliation(s)
- Rashmi Sharma
- Clinical Microbiology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu Tawi, India Academy of Scientific and Innovative Research, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, India
| | - Mallikharjuna Rao Lambu
- Academy of Scientific and Innovative Research, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, India Natural Products Chemistry: Microbes, CSIR-Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu, India
| | - Urmila Jamwal
- Fermentation Technology Division, CSIR-Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu Tawi, India
| | - Chitra Rani
- Clinical Microbiology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu Tawi, India Academy of Scientific and Innovative Research, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, India
| | - Reena Chib
- Clinical Microbiology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu Tawi, India
| | - Priya Wazir
- Instrumentation Division, CSIR-Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu Tawi, India
| | - Debaraj Mukherjee
- Academy of Scientific and Innovative Research, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, India Natural Products Chemistry: Microbes, CSIR-Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu, India
| | - Asha Chaubey
- Academy of Scientific and Innovative Research, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, India Fermentation Technology Division, CSIR-Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu Tawi, India
| | - Inshad Ali Khan
- Clinical Microbiology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu Tawi, India Academy of Scientific and Innovative Research, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, India
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Donzelli B, Krasnoff S. Molecular Genetics of Secondary Chemistry in Metarhizium Fungi. GENETICS AND MOLECULAR BIOLOGY OF ENTOMOPATHOGENIC FUNGI 2016; 94:365-436. [DOI: 10.1016/bs.adgen.2016.01.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Pinto A, Tamborini L, Cullia G, Conti P, De Micheli C. Inspired by Nature: The 3-Halo-4,5-dihydroisoxazole Moiety as a Novel Molecular Warhead for the Design of Covalent Inhibitors. ChemMedChem 2015; 11:10-4. [PMID: 26607551 DOI: 10.1002/cmdc.201500496] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Indexed: 11/10/2022]
Abstract
Over the past few decades, there has been an increasing interest in the development of covalent enzyme inhibitors. As it was recently re-emphasized, the selective, covalent binding of a drug to the desired target can increase efficiency and lower the inhibitor concentration required to achieve a therapeutic effect. In this context, the naturally occurring antibiotic acivicin, and in particular its 3-chloro-4,5-dihydroisoxazole scaffold, has provided a wealth of inspiration to medicinal chemists and chemical biologists alike. In this Concept, to underline the great potentiality that the 3-halo-4,5-dihydroisoxazole warhead has in drug discovery, we present a number of examples, grouped by their potential biological activity and targets, in which this scaffold has been fruitfully used to develop novel biologically active compounds. Through these examples, we show that the 3-halo-4,5-dihydroisoxazole moiety represents an outstanding warhead with high potential for the design of novel covalent enzyme inhibitors.
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Affiliation(s)
- Andrea Pinto
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via Mangiagalli, 25, 20133, Milano, Italy
| | - Lucia Tamborini
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via Mangiagalli, 25, 20133, Milano, Italy
| | - Gregorio Cullia
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via Mangiagalli, 25, 20133, Milano, Italy
| | - Paola Conti
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via Mangiagalli, 25, 20133, Milano, Italy
| | - Carlo De Micheli
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via Mangiagalli, 25, 20133, Milano, Italy.
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Heravi MM, Lashaki TB, Poorahmad N. Applications of Sharpless asymmetric epoxidation in total synthesis. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.tetasy.2015.03.006] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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van den Heever JP, Thompson TS, Curtis JM, Pernal SF. Stability of dicyclohexylamine and fumagillin in honey. Food Chem 2015; 179:152-8. [PMID: 25722149 DOI: 10.1016/j.foodchem.2015.01.111] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 01/14/2015] [Accepted: 01/21/2015] [Indexed: 11/19/2022]
Abstract
Fumagillin is extensively used to control nosema disease in apiculture. In the commercial formulation, fumagillin is present as a salt in an equimolar quantity with dicyclohexylamine (DCH). In this study DCH was observed to be significantly more resistant to degradation in honey than fumagillin using LC-MS/MS analysis. Observed half-lives for DCH ranged from a minimum of 368 days when kept at 34 °C in darkness, to a maximum of 852 days when stored at 21 °C in darkness. A maximum half-life of 246 days was observed for fumagillin in samples kept in darkness at a temperature of 21 °C. The observed half-life of fumagillin was estimated to be 3 days when exposed to light at 21 °C, and complete decomposition was observed after 30 days under the same conditions. The stability of DCH, combined with its genotoxicity and tumorigenic properties make it an important potential contaminant in honey destined for human consumption.
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Affiliation(s)
- Johan P van den Heever
- Alberta Agriculture and Rural Development, Animal Health and Assurance Division, Agri-Food Laboratories Branch, 6909-116 Street, Edmonton, Alberta T6H 4P2, Canada.
| | - Thomas S Thompson
- Alberta Agriculture and Rural Development, Animal Health and Assurance Division, Agri-Food Laboratories Branch, 6909-116 Street, Edmonton, Alberta T6H 4P2, Canada
| | - Jonathan M Curtis
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
| | - Stephen F Pernal
- Agriculture & Agri-Food Canada, Beaverlodge Research Farm, P.O. Box 29, Beaverlodge, Alberta T0H 0C0, Canada
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van den Heever JP, Thompson TS, Curtis JM, Pernal SF. Determination of Dicyclohexylamine and Fumagillin in Honey by LC-MS/MS. FOOD ANAL METHOD 2014. [DOI: 10.1007/s12161-014-9956-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Blanchet E, Vansteelandt M, Le Bot R, Egorov M, Guitton Y, Pouchus YF, Grovel O. Synthesis and antiproliferative activity of ligerin and new fumagillin analogs against osteosarcoma. Eur J Med Chem 2014; 79:244-50. [PMID: 24742383 DOI: 10.1016/j.ejmech.2014.04.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 03/31/2014] [Accepted: 04/04/2014] [Indexed: 11/16/2022]
Abstract
Ligerin (1) is a natural chlorinated merosesquiterpenoid related to fumagillin (2) exhibiting a selective antiproliferative activity against osteosarcoma cell lines and an in vivo antitumor activity in a murine model. Semisynthesis of ligerin analogs was performed in order to study the effects of the C3-spiroepoxide substitution by a halogenated moiety together with the modulation of the C6 chain. Results showed that all derivatives exhibited an in vitro antiproliferative activity against osteosarcoma cell lines and that chlorohydrin compounds were equally or more active than their spiroepoxy analogs. Among semisynthetic analogs, the parent compound 1 was the best candidate for further studies since it exhibited higher or equivalent activity compared to TNP470 (3) against SaOS2 and MG63 human osteosarcoma cells with a four times weaker toxicity against HFF2 human fibroblasts. Quantitative videomicroscopy analysis was conducted and allowed a better understanding of the mechanism of its antiproliferative activity.
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Affiliation(s)
- Elodie Blanchet
- University of Nantes, Faculty of Pharmacy, MMS-EA260, Nantes F-44000, France; Atlanthera, Atlantic Bone Screen, Nantes, France
| | | | - Ronan Le Bot
- Atlanthera, Atlantic Bone Screen, Nantes, France
| | - Maxim Egorov
- Atlanthera, Atlantic Bone Screen, Nantes, France
| | - Yann Guitton
- University of Nantes, Faculty of Pharmacy, MMS-EA260, Nantes F-44000, France
| | | | - Olivier Grovel
- University of Nantes, Faculty of Pharmacy, MMS-EA260, Nantes F-44000, France.
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van den Heever JP, Thompson TS, Curtis JM, Ibrahim A, Pernal SF. Fumagillin: an overview of recent scientific advances and their significance for apiculture. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:2728-37. [PMID: 24621007 DOI: 10.1021/jf4055374] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Fumagillin is a potent fungal metabolite first isolated from Aspergillus fumigatus. It is widely used in apiculture and human medicine against a variety of microsporidian fungal infections. It has been the subject of research in cancer treatments by employing its angiogenesis inhibitory properties. The toxicity of fumagillin has limited its use for human applications and spurred the development of analogues using structure-activity relationships relating to its angiogenesis properties. These discoveries may hold the key to the development of alternative chemical treatments for use in apiculture. The toxicity of fumagillin to humans is important for beekeeping, because any residues remaining in hive products pose a direct risk to the consumer. The analytical methods published to date measure fumagillin and its decomposition products but overlook the dicyclohexylamine counterion of the salt form widely used in apiculture.
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Affiliation(s)
- Johan P van den Heever
- Alberta Agriculture and Rural Development , Animal Health and Assurance Division, Agri-Food Laboratories Branch, 6909-116 Street, Edmonton, Alberta, Canada T6H 4P2
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Design, synthesis and evaluation of a cellular stable and detectable biotinylated fumagillin probe and investigation of cell permeability of fumagillin and its analogs to endothelial and cancer cells. Eur J Med Chem 2013; 70:631-9. [PMID: 24211639 DOI: 10.1016/j.ejmech.2013.10.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 10/10/2013] [Accepted: 10/12/2013] [Indexed: 01/28/2023]
Abstract
Fumagillin (1), a natural product of fungal origin, and its analogs were discovered to be extremely potent and highly selective inhibitors restraining endothelial cell proliferation in vitro by covalently binding to MetAP2. In order to further understand the unclear biological mechanisms and pharmacological processes of fumagillin and its derivatives, fumagillin-biotin conjugate 8 was designed and synthesized, which is linked with a 27-atom connection chain and by urethane (carbamate) bonds between fumagillol and D-norbiotinamine. The conjugate 8 shows comparable activity and selectivity against HUVEC proliferation as fumagillin. It was demonstrated that the conjugate 8 is stable inside the cell and its linker is of a suitable length for the detection of biotin in native and denatured conditions. Using the conjugate 8, it was determined that the cell permeability of fumagillin (1) and its analogs are not responsible for their inhibitory activity difference against the proliferation of endothelial and cancer cells. Furthermore, we confidently believe that our present strategy is a versatile and convenient method for investigating drug's cell permeability along with other studies regardless of reversible or irreversible interaction between the drug and binding target/s.
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Majerić Elenkov M, Primožič I, Hrenar T, Smolko A, Dokli I, Salopek-Sondi B, Tang L. Catalytic activity of halohydrin dehalogenases towards spiroepoxides. Org Biomol Chem 2012; 10:5063-72. [DOI: 10.1039/c2ob25470k] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Gersch M, Kreuzer J, Sieber SA. Electrophilic natural products and their biological targets. Nat Prod Rep 2012; 29:659-82. [DOI: 10.1039/c2np20012k] [Citation(s) in RCA: 193] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Basaran P, Demirbas RM. Spectroscopic detection of pharmaceutical compounds from an aflatoxigenic strain of Aspergillus parasiticus. Microbiol Res 2009; 165:516-22. [PMID: 19879117 DOI: 10.1016/j.micres.2009.09.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2009] [Revised: 09/18/2009] [Accepted: 09/22/2009] [Indexed: 10/20/2022]
Abstract
Polar and non-polar secondary metabolites as well as phenolic compounds of Aspergillus parasiticus grown on hazelnut were analyzed by high-resolution high performance liquid chromatography-mass spectroscopy and fourier transform infrared spectroscopy. Several novel and beneficial compounds such as dibutyl phthalate, pyrogallol, fumagillol, italicic acid and sorbicillin were identified from A. parasiticus for the first time. Some of these compounds have the potential to be used in pharmaceutical industry.
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Affiliation(s)
- P Basaran
- Department of Food Engineering, Suleyman Demirel University, Isparta, Turkey.
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Abstract
Researchers in the post-genome era are confronted with the daunting task of assigning structure and function to tens of thousands of encoded proteins. To realize this goal, new technologies are emerging for the analysis of protein function on a global scale, such as activity-based protein profiling (ABPP), which aims to develop active site-directed chemical probes for enzyme analysis in whole proteomes. For the pursuit of such chemical proteomic technologies, it is helpful to derive inspiration from protein-reactive natural products. Natural products use a remarkably diverse set of mechanisms to covalently modify enzymes from distinct mechanistic classes, thus providing a wellspring of chemical concepts that can be exploited for the design of active-site-directed proteomic probes. Herein, we highlight several examples of protein-reactive natural products and illustrate how their mechanisms of action have influenced and continue to shape the progression of chemical proteomic technologies like ABPP.
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Affiliation(s)
- Carmen Drahl
- Department of Chemistry, Princeton University, Princeton, NJ 08544, USA
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Schiffmann R, Neugebauer A, Klein CD. Metal-Mediated Inhibition of Escherichia coli Methionine Aminopeptidase: Structure−Activity Relationships and Development of a Novel Scoring Function for Metal−Ligand Interactions. J Med Chem 2005; 49:511-22. [PMID: 16420038 DOI: 10.1021/jm050476z] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the discovery of thiabendazole as a potent inhibitor (K(i) = 0.4 microM) of Escherichia coli methionine aminopeptidase (ecMetAP) and the synthesis and pharmacological evaluation of thiabendazole congeners with activity in the upper nanomolar range. Elucidation of the X-ray structure of ecMetAP in complex with thiabendazole and an unrelated inhibitor that was independently described by another group showed that that both compounds bind to an additional Co(II) ion at the entrance of the active site. This unexpected finding explains the inactivity of the compounds under in vivo conditions. It also allows us to discuss the structure-activity relationships of this series of compounds in a meaningful way, based upon docking runs with an auxiliary metal ion. We describe a new scoring function for the evaluation of metal-mediated inhibitor binding that, unlike the previously used scoring function implemented in the docking program, allows us to distinguish between active and inactive compounds. Finally, conclusions for the structure-based design of in vivo-active inhibitors of ecMetAP are drawn.
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Affiliation(s)
- Rolf Schiffmann
- Saarland University, Pharmaceutical and Medicinal Chemistry, D-66041 Saarbrücken, Germany
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Jeong BS, Choi NS, Ahn SK, Bae H, Kim HS, Kim D. Total synthesis and antiangiogenic activity of cyclopentane analogues of fumagillol. Bioorg Med Chem Lett 2005; 15:3580-3. [PMID: 15978809 DOI: 10.1016/j.bmcl.2005.05.065] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2005] [Revised: 05/12/2005] [Accepted: 05/14/2005] [Indexed: 11/20/2022]
Abstract
Novel cyclopentane analogues of fumagillol were synthesized and their endothelial cell proliferation inhibitory activities were evaluated. The cyclopentane-fumagillol derivatives were synthesized from (-)-2,3-O-isopropylidene-D-erythronolactone via stereoselective glycolate Claisen rearrangement and intramolecular ester enolate alkylation as key steps.
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Affiliation(s)
- Byeong-Seon Jeong
- New Drug Research Laboratories, Chong Kun Dang Research Institute, Cheonan 330-831, Republic of Korea
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Kim D, Ahn SK, Bae H, Kim HS. A stereoselective asymmetric synthesis of antibiotic (-)-Fumagillol using claisen rearrangement and intramolecular ester enolate alkylation as key steps. Arch Pharm Res 2005; 28:129-41. [PMID: 15789740 DOI: 10.1007/bf02977704] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
(-)-Fumagillol (1), a hydrolysis product of fumagillin, has been synthesized by several group from commercially available 1,2:5,6-di-O-isopropylidene-alpha-D-allofuranose in a highly stereoselective manner. Chiral centers on C5 and C6 came from D-allofuranose and the asymmetric center on C4 was accomplished by 1,3-chirality transfer using the Claisen rearrangement on a chiral allyl alcohol. Chirality, which is necessary on an epoxide consisting of the spiro-ring system, was diastereoselectively constructed by the well-known reaction, intramolecular ester enolate alkylation (IEEA), which showed that this reaction can be applied to the alpha-alkoxy ester system. The epoxide on the side chain was regioselectively introduced by the difference between the number of substituents on the vinyl groups. This accomplishment proved that IEEA can be a useful tool for the synthesis of complex molecules.
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Affiliation(s)
- Deukjoon Kim
- College of Pharmacy, Seoul National University, Shinrim-Dong, Kwanak-Ku, Seoul 151-742, South Korea
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Kim D, Min J, Ahn SK, Lee HW, Choi NS, Moon SK. 5-Demethoxyfumagillol, a potent angiogenesis inhibitor isolated from Aspergillus fumigatus. Chem Pharm Bull (Tokyo) 2004; 52:447-50. [PMID: 15056962 DOI: 10.1248/cpb.52.447] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A novel angiogenesis inhibitor, 5-demethoxyfumagillol (1), was obtained by isolation, purification and saponification of cultured broth of Aspergillus fumigatus. The structure was assigned as (3R,4R,6R)-4-[(2R,3R)-2-methyl-3-(3-methyl-but-2-enyl)-oxiranyl]-1-oxa-spiro[2,5]octan-6-ol (1) by spectroscopic analysis and confirmed by independent synthesis from fumagillol (3). In addition, 6-O-(chloroacetylcarbamoyl)-5-demethoxyfumagillol (7) showed a potential anti-angiogenic activity in CAPE cells in vitro.
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Affiliation(s)
- Deukjoon Kim
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Korea.
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