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Patel AR, Lawer A, Bhadbhade M, Hunter L. The influence of backbone fluorination on the helicity of α/γ-hybrid peptides. Org Biomol Chem 2024; 22:1608-1612. [PMID: 38305470 DOI: 10.1039/d3ob02016a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Peptides that are composed of an alternating pattern of α- and γ-amino acids are potentially valuable as metabolism-resistant bioactive agents. For optimal function, some kind of conformational restriction is usually required to either stabilize the dominant 12-helix, or else to divert the peptide away from this conformation in a controlled way. Herein, we explore stereoselective fluorination as a method for controlling the conformations of α/γ-hybrid peptides. We show through a combination of X-ray, NMR and CD analyses that fluorination can either stabilize or disrupt the 12-helix, depending on the fluorine stereochemistry. These findings could inform the ongoing development of diverse functional hybrid peptides.
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Affiliation(s)
| | - Aggie Lawer
- School of Chemistry, University of New South Wales (UNSW), Sydney, Australia.
| | - Mohan Bhadbhade
- Mark Wainwright Analytical Centre, University of New South Wales (UNSW), Sydney, Australia
| | - Luke Hunter
- School of Chemistry, University of New South Wales (UNSW), Sydney, Australia.
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2
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Neupane S, Rodrigues de Amorim M, Skellam E. Discovery of unguisin J, a new cyclic peptide from Aspergillus heteromorphus CBS 117.55, and phylogeny-based bioinformatic analysis of UngA NRPS domains. Beilstein J Org Chem 2024; 20:321-330. [PMID: 38410778 PMCID: PMC10896222 DOI: 10.3762/bjoc.20.32] [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: 12/15/2023] [Accepted: 02/07/2024] [Indexed: 02/28/2024] Open
Abstract
Several under-explored Aspergillus sp. produce intriguing heptapeptides containing a γ-aminobutyric acid (GABA) residue with as yet unknown biological functions. In this study, a new GABA-containing heptapeptide - unguisin J (1) - along with known unguisin B (2) were isolated from a solid culture of Aspergillus heteromorphus CBS 117.55. The structure of compound 1 was elucidated by extensive 1D and 2D NMR spectroscopic analysis including HSQC, HMBC, COSY, and 2D NOESY as well as HRESIMS. The stereochemistry of 1 and 2 was determined by Marfey's method. A biosynthetic gene cluster (BGC) encoding unguisins B and J was compared to characterized BGCs in other Aspergillus sp. Since the unguisin family of heptapetides incorporate different amino acid residues at different positions of the peptide, the A and C domains of the UngA NRPS were analyzed in an attempt to understand the lack of substrate specificity observed.
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Affiliation(s)
- Sharmila Neupane
- Department of Chemistry, University of North Texas, 1155 Union Circle, Denton, TX 76203, USA
- BioDiscovery Institute, University of North Texas, 1155 Union Circle, Denton, TX 76203, USA
| | - Marcelo Rodrigues de Amorim
- Department of Chemistry, University of North Texas, 1155 Union Circle, Denton, TX 76203, USA
- BioDiscovery Institute, University of North Texas, 1155 Union Circle, Denton, TX 76203, USA
- Instituto de Química de São Carlos, Universidade de São Paulo, CP 780, CEP 13560-970, São Carlos, SP, Brazil
| | - Elizabeth Skellam
- Department of Chemistry, University of North Texas, 1155 Union Circle, Denton, TX 76203, USA
- BioDiscovery Institute, University of North Texas, 1155 Union Circle, Denton, TX 76203, USA
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3
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Xiong S, Zhang Y, Jiang Y, Wang F, Zhou W, Li A, Zhang Q, Wang Q, He Q. Photo-controllable binding and release of HP 2O 73- using an azobenzene based smart macrocycle. Chem Commun (Camb) 2023; 59:12994-12997. [PMID: 37830230 DOI: 10.1039/d3cc03608a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Herein, we describe the design and synthesis of an unusual azobenzene-bearing macrocycle 1, whose trans isomer was found able to 100% transform into its cis configuration under photoirradiation, for selectively recognizing HP2O73- with reversibly photo-controllable binding and release properties.
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Affiliation(s)
- Shenglun Xiong
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, No. 2 Lushan Road (S), Yuelu District, Changsha 410082, P. R. China.
| | - Yi Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, No. 2 Lushan Road (S), Yuelu District, Changsha 410082, P. R. China.
| | - Yunqi Jiang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, No. 2 Lushan Road (S), Yuelu District, Changsha 410082, P. R. China.
| | - Fei Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, No. 2 Lushan Road (S), Yuelu District, Changsha 410082, P. R. China.
| | - Wei Zhou
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, No. 2 Lushan Road (S), Yuelu District, Changsha 410082, P. R. China.
| | - Aimin Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, No. 2 Lushan Road (S), Yuelu District, Changsha 410082, P. R. China.
| | - Qinpeng Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, No. 2 Lushan Road (S), Yuelu District, Changsha 410082, P. R. China.
| | - Qiuan Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, No. 2 Lushan Road (S), Yuelu District, Changsha 410082, P. R. China.
| | - Qing He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, No. 2 Lushan Road (S), Yuelu District, Changsha 410082, P. R. China.
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Wei X, Chan TK, Kong CTD, Matsuda Y. Biosynthetic Characterization, Heterologous Production, and Genomics-Guided Discovery of GABA-Containing Fungal Heptapeptides. JOURNAL OF NATURAL PRODUCTS 2023; 86:416-422. [PMID: 36715406 DOI: 10.1021/acs.jnatprod.2c01065] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The biosynthetic gene cluster of γ-aminobutyric acid (GABA)-containing fungal cyclic heptapeptides unguisins A (1) and B (2) was identified in the fungus Aspergillus violaceofuscus CBS 115571. In vitro enzymatic reactions and gene deletion experiments revealed that the unguisin pathway involves the alanine racemase UngC to provide d-alanine, which is then accepted by the first adenylation domain of the nonribosomal peptide synthetase (NRPS) UngA. Intriguingly, the hydrolase UngD was found to transform unguisins into previously undescribed linear peptides. Subsequently, heterologous production of these peptides in Aspergillus oryzae was achieved, in which we established a methodology to readily introduce a large NRPS gene into the fungal host. Finally, genome mining revealed new unguisin congeners, each containing a (2R,3R)-β-methylphenylalanine residue.
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Affiliation(s)
- Xingxing Wei
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, China
| | - Tsz Ki Chan
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, China
| | - Che Tung Derek Kong
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, China
| | - Yudai Matsuda
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, China
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, Guangdong 518057, China
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Wang Y, Glukhov E, He Y, Liu Y, Zhou L, Ma X, Hu X, Hong P, Gerwick WH, Zhang Y. Secondary Metabolite Variation and Bioactivities of Two Marine Aspergillus Strains in Static Co-Culture Investigated by Molecular Network Analysis and Multiple Database Mining Based on LC-PDA-MS/MS. Antibiotics (Basel) 2022; 11:513. [PMID: 35453264 PMCID: PMC9031932 DOI: 10.3390/antibiotics11040513] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 03/30/2022] [Accepted: 04/06/2022] [Indexed: 12/11/2022] Open
Abstract
Co-culture is known as an efficient way to explore the metabolic potential of fungal strains for new antibiotics and other therapeutic agents that could counter emerging health issues. To study the effect of co-culture on the secondary metabolites and bioactivities of two marine strains, Aspergillus terreus C23-3 and Aspergillus. unguis DLEP2008001, they were co-cultured in live or inactivated forms successively or simultaneously. The mycelial morphology and high-performance thin layer chromatography (HPTLC) including bioautography of the fermentation extracts were recorded. Furthermore, the agar cup-plate method was used to compare the antimicrobial activity of the extracts. Based on the above, liquid chromatography-photodiode array-tandem mass spectrometry (LC-PDA-MS/MS) together with Global Natural Products Social molecular networking (GNPS) and multiple natural products database mining were used to further analyze their secondary metabolite variations. The comprehensive results showed the following trends: (1) The strain first inoculated will strongly inhibit the growth and metabolism of the latter inoculated one; (2) Autoclaved A. unguis exerted a strong inducing effect on later inoculated A. terreus, while the autoclaved A. terreus showed high stability of its metabolites and still potently suppressed the growth and metabolism of A. unguis; (3) When the two strains are inoculated simultaneously, they both grow and produce metabolites; however, the A. terreus seemed to be more strongly induced by live A. unguis and this inducing effect surpassed that of the autoclaved A. unguis. Under some of the conditions, the extracts showed higher antimicrobial activity than the axenic cultures. Totally, A. unguis was negative in response but potent in stimulating its rival while A. terreus had the opposite effect. Fifteen MS detectable and/or UV active peaks showed different yields in co-cultures vs. the corresponding axenic culture. GNPS analysis assisted by multiple natural products databases mining (PubChem, Dictionary of Natural Products, NPASS, etc.) gave reasonable annotations for some of these peaks, including antimicrobial compounds such as unguisin A, lovastatin, and nidulin. However, some of the peaks were correlated with antagonistic properties and remain as possible novel compounds without mass or UV matching hits from any database. It is intriguing that the two strains both synthesize chemical 'weapons' for antagonism, and that these are upregulated when needed in competitive co-culture environment. At the same time, compounds not useful in this antagonistic setting are downregulated in their expression. Some of the natural products produced during antagonism are unknown chlorinated metabolites and deserve further study for their antimicrobial properties. In summary, this study disclosed the different responses of two Aspergillus strains in co-culture, revealed their metabolic variation, and displayed new opportunities for antibiotic discovery.
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Affiliation(s)
- Yuan Wang
- College of Food Science and Technology, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Seafood, Shenzhen Institute of Guangdong Ocean University, Zhanjiang Municipal Key Laboratory of Marine Drugs and Nutrition for Brain Health, Research Institute for Marine Drugs and Nutrition, Guangdong Ocean University, Zhanjiang 524088, China; (Y.W.); (Y.L.); (L.Z.); (X.M.); (X.H.); (P.H.)
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Evgenia Glukhov
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, and the Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA 92093, USA; (E.G.); (Y.H.); (W.H.G.)
| | - Yifan He
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, and the Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA 92093, USA; (E.G.); (Y.H.); (W.H.G.)
| | - Yayue Liu
- College of Food Science and Technology, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Seafood, Shenzhen Institute of Guangdong Ocean University, Zhanjiang Municipal Key Laboratory of Marine Drugs and Nutrition for Brain Health, Research Institute for Marine Drugs and Nutrition, Guangdong Ocean University, Zhanjiang 524088, China; (Y.W.); (Y.L.); (L.Z.); (X.M.); (X.H.); (P.H.)
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Longjian Zhou
- College of Food Science and Technology, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Seafood, Shenzhen Institute of Guangdong Ocean University, Zhanjiang Municipal Key Laboratory of Marine Drugs and Nutrition for Brain Health, Research Institute for Marine Drugs and Nutrition, Guangdong Ocean University, Zhanjiang 524088, China; (Y.W.); (Y.L.); (L.Z.); (X.M.); (X.H.); (P.H.)
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Xiaoxiang Ma
- College of Food Science and Technology, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Seafood, Shenzhen Institute of Guangdong Ocean University, Zhanjiang Municipal Key Laboratory of Marine Drugs and Nutrition for Brain Health, Research Institute for Marine Drugs and Nutrition, Guangdong Ocean University, Zhanjiang 524088, China; (Y.W.); (Y.L.); (L.Z.); (X.M.); (X.H.); (P.H.)
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Xueqiong Hu
- College of Food Science and Technology, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Seafood, Shenzhen Institute of Guangdong Ocean University, Zhanjiang Municipal Key Laboratory of Marine Drugs and Nutrition for Brain Health, Research Institute for Marine Drugs and Nutrition, Guangdong Ocean University, Zhanjiang 524088, China; (Y.W.); (Y.L.); (L.Z.); (X.M.); (X.H.); (P.H.)
| | - Pengzhi Hong
- College of Food Science and Technology, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Seafood, Shenzhen Institute of Guangdong Ocean University, Zhanjiang Municipal Key Laboratory of Marine Drugs and Nutrition for Brain Health, Research Institute for Marine Drugs and Nutrition, Guangdong Ocean University, Zhanjiang 524088, China; (Y.W.); (Y.L.); (L.Z.); (X.M.); (X.H.); (P.H.)
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - William H. Gerwick
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, and the Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA 92093, USA; (E.G.); (Y.H.); (W.H.G.)
| | - Yi Zhang
- College of Food Science and Technology, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Seafood, Shenzhen Institute of Guangdong Ocean University, Zhanjiang Municipal Key Laboratory of Marine Drugs and Nutrition for Brain Health, Research Institute for Marine Drugs and Nutrition, Guangdong Ocean University, Zhanjiang 524088, China; (Y.W.); (Y.L.); (L.Z.); (X.M.); (X.H.); (P.H.)
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, and the Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA 92093, USA; (E.G.); (Y.H.); (W.H.G.)
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Horvat G, Tarana S, Vidović N, Cindro N, Speranza G, Tomišić V. Thermodynamic and MD studies of anion complexation by cyclopentaleucine in acetonitrile and dimethyl sulfoxide. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116848] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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7
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Lawer A, Hunter L. Controlling γ‐Peptide Helicity with Stereoselective Fluorination. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001619] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Aggie Lawer
- School of Chemistry The University of New South Wales (UNSW) Sydney 2052 Australia
| | - Luke Hunter
- School of Chemistry The University of New South Wales (UNSW) Sydney 2052 Australia
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8
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Díaz N, Suárez D. Understanding the Conformational Properties of Fluorinated Polypeptides: Molecular Modelling of Unguisin A. J Chem Inf Model 2020; 61:223-237. [PMID: 33325701 DOI: 10.1021/acs.jcim.0c00746] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In this work, we investigate the conformational properties of unguisin A, a natural macrocyclic heptapeptide that incorporates a γ-aminobutyric acid (Gaba), and four of its difluorinated stereoisomers at the Gaba residue. According to nuclear magnetic resonance (NMR) experiments, their secondary structure depends dramatically on the stereochemistry of the fluorinated carbon atoms. However, many molecular details of the structure and flexibility of these systems remain unknown, so that a rationale of the conformational changes induced by the fluorine atoms in the macrocycle is still missing. To fill this gap, we apply enhanced molecular dynamics (MD) techniques to explore the peptide conformational space in dimethyl sulfoxide solution followed by 4-8 μs of conventional MD simulations that provide extensive equilibrium sampling. The simulations, which compare reasonably well with the NMR-based observations, show that the secondary structure of the macrocycle is altered substantially upon fluorination, except for the (S,S) diastereomer. It also turns out that the conformations of the fluorinated peptides are visited during the enhanced MD simulation of natural unguisin A, suggesting thus that conformations accessible to the unsubstituted macrocyclic peptide may be selected by fluorination. Therefore, computational characterization of the macrocyclic peptides could be helpful in the rational design of stereoselective fluorinated peptides with fine-tuned conformation and activity.
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Affiliation(s)
- Natalia Díaz
- Departamento de Química Física y Analítica, Universidad de Oviedo, Avda. Julián Clavería 8, 33006 Oviedo, Asturias, Spain
| | - Dimas Suárez
- Departamento de Química Física y Analítica, Universidad de Oviedo, Avda. Julián Clavería 8, 33006 Oviedo, Asturias, Spain
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9
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Jwad R, Weissberger D, Hunter L. Strategies for Fine-Tuning the Conformations of Cyclic Peptides. Chem Rev 2020; 120:9743-9789. [PMID: 32786420 DOI: 10.1021/acs.chemrev.0c00013] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cyclic peptides are promising scaffolds for drug development, attributable in part to their increased conformational order compared to linear peptides. However, when optimizing the target-binding or pharmacokinetic properties of cyclic peptides, it is frequently necessary to "fine-tune" their conformations, e.g., by imposing greater rigidity, by subtly altering certain side chain vectors, or by adjusting the global shape of the macrocycle. This review systematically examines the various types of structural modifications that can be made to cyclic peptides in order to achieve such conformational control.
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Affiliation(s)
- Rasha Jwad
- Department of Chemistry, College of Science, Al-Nahrain University, Baghdad, Iraq
| | - Daniel Weissberger
- School of Chemistry, University of New South Wales (UNSW) Sydney, New South Wales 2052, Australia
| | - Luke Hunter
- School of Chemistry, University of New South Wales (UNSW) Sydney, New South Wales 2052, Australia
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Alburae NA, Mohammed AE, Alorfi HS, Turki AJ, Asfour HZ, Alarif WM, Abdel-Lateff A. Nidulantes of Aspergillus (Formerly Emericella): A Treasure Trove of Chemical Diversity and Biological Activities. Metabolites 2020; 10:E73. [PMID: 32079311 PMCID: PMC7073611 DOI: 10.3390/metabo10020073] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 02/10/2020] [Accepted: 02/10/2020] [Indexed: 01/04/2023] Open
Abstract
The genus Emericella (Ascomycota) includes more than thirty species with worldwide distribution across many ecosystems. It is considered a rich source of diverse metabolites. The published classes of natural compounds that are discussed here are organized according to the following biosynthetic pathways: polyketides (azaphilones, cyclopentenone pigments, dicyanides, furan derivatives, phenolic ethers, and xanthones and anthraquinones); shikimate derivatives (bicoumarins); mevalonate derivatives (meroterpenes, sesquiterpenes, sesterterpenes and steroids) and amino acids derivatives (alkaloids (indole-derivatives, isoindolones, and piperazine) and peptides (depsipeptides)). These metabolites produce the wide array of biological effects associated with Emericella, including antioxidant, antiproliferative, antimalarial, antiviral, antibacterial, antioxidant, antihypertensive, anti-inflammatory, antifungal and kinase inhibitors. Careful and extensive study of the diversity and distribution of metabolites produced by the genus Emericella (either marine or terrestrial) revealed that, no matter the source of the fungus, the composition of the culture medium effectively controls the metabolites produced. The topic of this review is the diversity of metabolites that have been identified from Emericella, along with the contextual information on either their biological or geographic sources. This review presents 236 natural compounds, which were reported from marine and terrestrial Emericella. Amongst the reported compounds, only 70.2% were biologically assayed for their effects, including antimicrobial or cytotoxicity. This implies the need for substantial investigation of alternative activities. This review includes a full discussion of compound structures and disease management, based on materials published from 1982 through December 2019.
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Affiliation(s)
- Najla Ali Alburae
- Department of Biology, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia;
| | - Afrah E. Mohammed
- Department of Biology, Faculty of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia;
| | - Hajer Saeed Alorfi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia;
| | - Adnan Jaman Turki
- Department of Marine Chemistry, Faculty of Marine Sciences, King Abdulaziz University, P.O. Box 80207, Jeddah 21589, Saudi Arabia;
| | - Hani Zakaria Asfour
- Department of Medical Microbiology and Parasitology, Faculty of Medicine, Princess Al-Jawhara Center of Excellence in Research of Hereditary Disorders, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Walied Mohamed Alarif
- Department of Marine Chemistry, Faculty of Marine Sciences, King Abdulaziz University, P.O. Box 80207, Jeddah 21589, Saudi Arabia;
| | - Ahmed Abdel-Lateff
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, P.O. Box 80260, Jeddah 21589, Saudi Arabia
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
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12
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Pal S, Ghosh TK, Ghosh R, Mondal S, Ghosh P. Recent advances in recognition, sensing and extraction of phosphates: 2015 onwards. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2019.213128] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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13
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Au C, Gonzalez C, Leung YC, Mansour F, Trinh J, Wang Z, Hu XG, Griffith R, Pasquier E, Hunter L. Tuning the properties of a cyclic RGD-containing tetrapeptide through backbone fluorination. Org Biomol Chem 2019; 17:664-674. [PMID: 30601550 DOI: 10.1039/c8ob02679c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Stereoselective fluorination is investigated as a method for modulating the properties of a cyclic RGD-containing tetrapeptide. Three key outcomes of fluorination are assessed: (i) the effect on peptide cyclisation efficiency; (ii) the ability to fine-tune the molecular conformation; and (iii) the effect on the cyclic peptides' biological activity. Fluorination is found to exert pronounced effects against all three criteria.
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Affiliation(s)
- Catherine Au
- School of Chemistry, UNSW Sydney, NSW 2052, Australia.
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Abstract
Covering: January to December 2017This review covers the literature published in 2017 for marine natural products (MNPs), with 740 citations (723 for the period January to December 2017) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1490 in 477 papers for 2017), together with the relevant biological activities, source organisms and country of origin. Reviews, biosynthetic studies, first syntheses, and syntheses that led to the revision of structures or stereochemistries, have been included. Geographic distributions of MNPs at a phylogenetic level are reported.
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Affiliation(s)
- Anthony R Carroll
- School of Environment and Science, Griffith University, Gold Coast, Australia. and Griffith Institute for Drug Discovery, Griffith University, Brisbane, Australia
| | - Brent R Copp
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Rohan A Davis
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, Australia
| | - Robert A Keyzers
- Centre for Biodiscovery, School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, New Zealand
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Nakamura T, Yonemura S, Nabeshima T. Synthesis of per(5-N-carboxamide-5-dehydroxylmethyl)-β-cyclodextrins and their selective recognition ability utilizing multiple hydrogen bonds. Chem Commun (Camb) 2019; 55:3872-3875. [DOI: 10.1039/c9cc00517j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An amide cyclodextrin with anion recognition ability exhibits unique binding mode in which unsymmetrically arranged functional groups play distinctive roles.
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Affiliation(s)
- Takashi Nakamura
- Graduate School of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS)
- University of Tsukuba
- Tsukuba
- Japan
| | - Sota Yonemura
- Graduate School of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS)
- University of Tsukuba
- Tsukuba
- Japan
| | - Tatsuya Nabeshima
- Graduate School of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS)
- University of Tsukuba
- Tsukuba
- Japan
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Lei Y, Shen L, Liu JR, Jiao T, Zhang Y, Zhang C, Tong L, Hong X, Pan Y, Li H. A diquat-containing macrocyclic anion acceptor in pure water. Chem Commun (Camb) 2019; 55:8297-8300. [DOI: 10.1039/c9cc03750k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A self-assembled diquat-containing tetracationic macrocycle is obtained in a high yield, which demonstrates its anion recognition ability in pure water.
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Affiliation(s)
- Ye Lei
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Libo Shen
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Ji-Ren Liu
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Tianyu Jiao
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Yang Zhang
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Chi Zhang
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Lu Tong
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Xin Hong
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Yuanjiang Pan
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Hao Li
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
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17
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Tortorella E, Tedesco P, Palma Esposito F, January GG, Fani R, Jaspars M, de Pascale D. Antibiotics from Deep-Sea Microorganisms: Current Discoveries and Perspectives. Mar Drugs 2018; 16:md16100355. [PMID: 30274274 PMCID: PMC6213577 DOI: 10.3390/md16100355] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 09/25/2018] [Accepted: 09/27/2018] [Indexed: 12/17/2022] Open
Abstract
The increasing emergence of new forms of multidrug resistance among human pathogenic bacteria, coupled with the consequent increase of infectious diseases, urgently requires the discovery and development of novel antimicrobial drugs with new modes of action. Most of the antibiotics currently available on the market were obtained from terrestrial organisms or derived semisynthetically from fermentation products. The isolation of microorganisms from previously unexplored habitats may lead to the discovery of lead structures with antibiotic activity. The deep-sea environment is a unique habitat, and deep-sea microorganisms, because of their adaptation to this extreme environment, have the potential to produce novel secondary metabolites with potent biological activities. This review covers novel antibiotics isolated from deep-sea microorganisms. The chemical classes of the compounds, their bioactivities, and the sources of organisms are outlined. Furthermore, the authors report recent advances in techniques and strategies for the exploitation of deep-sea microorganisms.
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Affiliation(s)
- Emiliana Tortorella
- Institute of Protein Biochemistry, National Research Council, I-80131 Naples, Italy.
| | - Pietro Tedesco
- Institute of Protein Biochemistry, National Research Council, I-80131 Naples, Italy.
- Laboratoire d'Ingénierie des Systèmes Biologiques et des Procédés, INSA, 31400 Toulouse, France.
| | - Fortunato Palma Esposito
- Institute of Protein Biochemistry, National Research Council, I-80131 Naples, Italy.
- Stazione Zoologica "Anthon Dorn", Villa Comunale, I-80121 Naples, Italy.
| | - Grant Garren January
- Institute of Protein Biochemistry, National Research Council, I-80131 Naples, Italy.
| | - Renato Fani
- Department of Biology, University of Florence, Sesto Fiorentino, I-50019 Florence, Italy.
| | - Marcel Jaspars
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Aberdeen, Scotland AB24 3UE, UK.
| | - Donatella de Pascale
- Institute of Protein Biochemistry, National Research Council, I-80131 Naples, Italy.
- Stazione Zoologica "Anthon Dorn", Villa Comunale, I-80121 Naples, Italy.
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18
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Wang X, Lin M, Xu D, Lai D, Zhou L. Structural Diversity and Biological Activities of Fungal Cyclic Peptides, Excluding Cyclodipeptides. Molecules 2017; 22:E2069. [PMID: 29186926 PMCID: PMC6150023 DOI: 10.3390/molecules22122069] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 11/20/2017] [Accepted: 11/23/2017] [Indexed: 11/23/2022] Open
Abstract
Cyclic peptides are cyclic compounds formed mainly by the amide bonds between either proteinogenic or non-proteinogenic amino acids. This review highlights the occurrence, structures and biological activities of fungal cyclic peptides (excluding cyclodipeptides, and peptides containing ester bonds in the core ring) reported until August 2017. About 293 cyclic peptides belonging to the groups of cyclic tri-, tetra-, penta-, hexa-, hepta-, octa-, nona-, deca-, undeca-, dodeca-, tetradeca-, and octadecapeptides as well as cyclic peptides containing ether bonds in the core ring have been isolated from fungi. They were mainly isolated from the genera Aspergillus, Penicillium, Fusarium, Acremonium and Amanita. Some of them were screened to have antimicrobial, antiviral, cytotoxic, phytotoxic, insecticidal, nematicidal, immunosuppressive and enzyme-inhibitory activities to show their potential applications. Some fungal cyclic peptides such as the echinocandins, pneumocandins and cyclosporin A have been developed as pharmaceuticals.
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Affiliation(s)
- Xiaohan Wang
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Minyi Lin
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Dan Xu
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Daowan Lai
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Ligang Zhou
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
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