1
|
Román J, Lagos A, Mahn A, Quintero J. The Effect of Broccoli Glucosinolates Hydrolysis Products on Botrytis cinerea: A Potential New Antifungal Agent. Int J Mol Sci 2024; 25:7945. [PMID: 39063186 DOI: 10.3390/ijms25147945] [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: 05/10/2024] [Revised: 07/10/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024] Open
Abstract
The present study investigates the interactions between eight glucosinolate hydrolysis products (GHPs) sourced from broccoli by-products and the detoxifying enzymes of Botrytis cinerea, namely eburicol 14-alpha-demethylase (CYP51) and glutathione-S-transferase (GST), through in silico analysis. Additionally, in vitro assays were conducted to explore the impact of these compounds on fungal growth. Our findings reveal that GHPs exhibit greater efficacy in inhibiting conidia germination compared to mycelium growth. Furthermore, the results demonstrate the antifungal activity of glucosinolate hydrolysis products derived from various parts of the broccoli plant, including inflorescences, leaves, and stems, against B. cinerea. Importantly, the results suggest that these hydrolysis products interact with the detoxifying enzymes of the fungus, potentially contributing to their antifungal properties. Extracts rich in GHPs, particularly iberin and indole-GHPs, derived from broccoli by-products emerge as promising candidates for biofungicidal applications, offering a sustainable and novel approach to plant protection by harnessing bioactive compounds from agricultural residues.
Collapse
Affiliation(s)
- Juan Román
- Department of Chemical Engineering, University of Santiago, Chile, Avenida Libertador Bernardo O'Higgins 3363, Estación Central, Santiago 9170019, Chile
| | - Ailine Lagos
- Department of Chemical Engineering, University of Santiago, Chile, Avenida Libertador Bernardo O'Higgins 3363, Estación Central, Santiago 9170019, Chile
| | - Andrea Mahn
- Department of Chemical Engineering, University of Santiago, Chile, Avenida Libertador Bernardo O'Higgins 3363, Estación Central, Santiago 9170019, Chile
| | - Julián Quintero
- Department of Chemical Engineering, University of Santiago, Chile, Avenida Libertador Bernardo O'Higgins 3363, Estación Central, Santiago 9170019, Chile
| |
Collapse
|
2
|
Tanvir R, Ijaz S, Sajid I, Hasnain S. Multifunctional in vitro, in silico and DFT analyses on antimicrobial BagremycinA biosynthesized by Micromonospora chokoriensis CR3 from Hieracium canadense. Sci Rep 2024; 14:10976. [PMID: 38745055 PMCID: PMC11093986 DOI: 10.1038/s41598-024-61490-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 05/06/2024] [Indexed: 05/16/2024] Open
Abstract
Among the actinomycetes in the rare genera, Micromonospora is of great interest since it has been shown to produce novel therapeutic compounds. Particular emphasis is now on its isolation from plants since its population from soil has been extensively explored. The strain CR3 was isolated as an endophyte from the roots of Hieracium canadense, and it was identified as Micromonospora chokoriensis through 16S gene sequencing and phylogenetic analysis. The in-vitro analysis of its extract revealed it to be active against the clinical isolates of methicillin-resistant Staphylococcus aureus (MRSA) and Candida tropicalis (15 mm). No bioactivity was observed against Gram-negative bacteria, Escherichia coli ATCC 25922, and Klebsiella pneumoniae ATCC 706003. The Micromonospora chokoriensis CR3 extract was also analyzed through the HPLC-DAD-UV-VIS resident database, and it gave a maximum match factor of 997.334 with the specialized metabolite BagremycinA (BagA). The in-silico analysis indicated that BagA strongly interacted with the active site residues of the sterol 14-α demethylase and thymidylate kinase enzymes, with the lowest binding energies of - 9.7 and - 8.3 kcal/mol, respectively. Furthermore, the normal mode analysis indicated that the interaction between these proteins and BagA was stable. The DFT quantum chemical properties depicted BagA to be reasonably reactive with a HOMO-LUMO gap of (ΔE) of 4.390 eV. BagA also passed the drug-likeness test with a synthetic accessibility score of 2.06, whereas Protox-II classified it as a class V toxicity compound with high LD50 of 2644 mg/kg. The current study reports an endophytic actinomycete, M. chokoriensis, associated with H. canadense producing the bioactive metabolite BagA with promising antimicrobial activity, which can be further modified and developed into a safe antimicrobial drug.
Collapse
Affiliation(s)
- Rabia Tanvir
- Institute of Microbiology (IOM), University of Veterinary and Animal Sciences (UVAS), Lahore, 54000, Punjab, Pakistan.
| | - Saadia Ijaz
- Department of Microbiology and Molecular Genetics, The Women University, Multan, 66000, Punjab, Pakistan
| | - Imran Sajid
- Institute of Microbiology and Molecular Genetics (IMMG), University of the Punjab, Quaid-e-Azam Campus, Lahore, 54590, Punjab, Pakistan
| | - Shahida Hasnain
- Institute of Microbiology and Molecular Genetics (IMMG), University of the Punjab, Quaid-e-Azam Campus, Lahore, 54590, Punjab, Pakistan
| |
Collapse
|
3
|
Tlapale-Lara N, López J, Gómez E, Villa-Tanaca L, Barrera E, Escalante CH, Tamariz J, Delgado F, Andrade-Pavón D, Gómez-García O. Synthesis, In Silico Study, and In Vitro Antifungal Activity of New 5-(1,3-Diphenyl-1 H-Pyrazol-4-yl)-4-Tosyl-4,5-Dihydrooxazoles. Int J Mol Sci 2024; 25:5091. [PMID: 38791130 PMCID: PMC11120875 DOI: 10.3390/ijms25105091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 04/29/2024] [Accepted: 05/02/2024] [Indexed: 05/26/2024] Open
Abstract
The increase in multi-drug resistant Candida strains has caused a sharp rise in life-threatening fungal infections in immunosuppressed patients, including those with SARS-CoV-2. Novel antifungal drugs are needed to combat multi-drug-resistant yeasts. This study aimed to synthesize a new series of 2-oxazolines and evaluate the ligands in vitro for the inhibition of six Candida species and in silico for affinity to the CYP51 enzymes (obtained with molecular modeling and protein homology) of the same species. The 5-(1,3-diphenyl-1H-pyrazol-4-yl)-4-tosyl-4,5-dihydrooxazoles 6a-j were synthesized using the Van Leusen reaction between 1,3-diphenyl-4-formylpyrazoles 4a-j and TosMIC 5 in the presence of K2CO3 or KOH without heating, resulting in short reaction times, high compound purity, and high yields. The docking studies revealed good affinity for the active site of the CYP51 enzymes of the Candida species in the following order: 6a-j > 4a-j > fluconazole (the reference drug). The in vitro testing of the compounds against the Candida species showed lower MIC values for 6a-j than 4a-j, and for 4a-j than fluconazole, thus correlating well with the in silico findings. According to growth rescue assays, 6a-j and 4a-j (like fluconazole) inhibit ergosterol synthesis. The in silico toxicity assessment evidenced the safety of compounds 6a-j, which merit further research as possible antifungal drugs.
Collapse
Affiliation(s)
- Neively Tlapale-Lara
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (N.T.-L.); (J.L.); (E.B.); (J.T.); (F.D.)
| | - Julio López
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (N.T.-L.); (J.L.); (E.B.); (J.T.); (F.D.)
| | - Elizabeth Gómez
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacán, Mexico City 04510, Mexico; (E.G.); (C.H.E.)
| | - Lourdes Villa-Tanaca
- Departamento de Microbiología, Laboratorio de Biología Molecular de Bacterias y Levaduras, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Colonia Santo Tomás, Mexico City 11340, Mexico;
| | - Edson Barrera
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (N.T.-L.); (J.L.); (E.B.); (J.T.); (F.D.)
| | - Carlos H. Escalante
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacán, Mexico City 04510, Mexico; (E.G.); (C.H.E.)
| | - Joaquín Tamariz
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (N.T.-L.); (J.L.); (E.B.); (J.T.); (F.D.)
| | - Francisco Delgado
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (N.T.-L.); (J.L.); (E.B.); (J.T.); (F.D.)
| | - Dulce Andrade-Pavón
- Departamento de Microbiología, Laboratorio de Biología Molecular de Bacterias y Levaduras, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Colonia Santo Tomás, Mexico City 11340, Mexico;
- Departamento de Fisiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu S/N, Unidad Adolfo López Mateos, Mexico City 07738, Mexico
| | - Omar Gómez-García
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (N.T.-L.); (J.L.); (E.B.); (J.T.); (F.D.)
| |
Collapse
|
4
|
Konings M, Gerrits van den Ende B, Raats MWJ, Fahal AH, van de Sande WWJ, Hagen F. Complete Genome Sequence of the Itraconazole Decreased Susceptible Madurella fahalii Type-Strain CBS 129176. Mycopathologia 2024; 189:6. [PMID: 38231295 PMCID: PMC10794591 DOI: 10.1007/s11046-023-00807-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 10/04/2023] [Indexed: 01/18/2024]
Abstract
Madurella fahalii is a causative agent of the implantation mycosis mycetoma with decreased susceptibility to itraconazole, the preferred therapeutic drug to combat mycetoma. Here, we report the M. fahalii type-strain CBS 129176 genome assembly and annotation to identify a glutamic acid insert near the azole-binding pocket in the Cyp51A protein.
Collapse
Affiliation(s)
- Mickey Konings
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC, University Medical Center Rotterdam, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | | | - Mirthe W J Raats
- Department of Medical Mycology, Westerdijk Fungal Biodiversity Institute, Utrecht, The Netherlands
| | | | - Wendy W J van de Sande
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC, University Medical Center Rotterdam, PO Box 2040, 3000 CA, Rotterdam, The Netherlands.
| | - Ferry Hagen
- Department of Medical Mycology, Westerdijk Fungal Biodiversity Institute, Utrecht, The Netherlands
- Institute for Biodiversity and Ecosystems Dynamics, University of Amsterdam, Amsterdam, The Netherlands
- Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, The Netherlands
| |
Collapse
|
5
|
Miranda-Sánchez D, Escalante CH, Andrade-Pavón D, Gómez-García O, Barrera E, Villa-Tanaca L, Delgado F, Tamariz J. Pyrrole-Based Enaminones as Building Blocks for the Synthesis of Indolizines and Pyrrolo[1,2- a]pyrazines Showing Potent Antifungal Activity. Molecules 2023; 28:7223. [PMID: 37894702 PMCID: PMC10608852 DOI: 10.3390/molecules28207223] [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: 09/08/2023] [Revised: 10/09/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
As a new approach, pyrrolo[1,2-a]pyrazines were synthesized through the cyclization of 2-formylpyrrole-based enaminones in the presence of ammonium acetate. The enaminones were prepared with a straightforward method, reacting the corresponding alkyl 2-(2-formyl-1H-pyrrol-1-yl)acetates, 2-(2-formyl-1H-pyrrol-1-yl)acetonitrile, and 2-(2-formyl-1H-pyrrol-1-yl)acetophenones with DMFDMA. Analogous enaminones elaborated from alkyl (E)-3-(1H-pyrrol-2-yl)acrylates were treated with a Lewis acid to afford indolizines. The antifungal activity of the series of substituted pyrroles, pyrrole-based enaminones, pyrrolo[1,2-a]pyrazines, and indolizines was evaluated on six Candida spp., including two multidrug-resistant ones. Compared to the reference drugs, most test compounds produced a more robust antifungal effect. Docking analysis suggests that the inhibition of yeast growth was probably mediated by the interaction of the compounds with the catalytic site of HMGR of the Candida species.
Collapse
Affiliation(s)
- Diter Miranda-Sánchez
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (D.M.-S.); (C.H.E.); (O.G.-G.); (E.B.); (F.D.)
| | - Carlos H. Escalante
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (D.M.-S.); (C.H.E.); (O.G.-G.); (E.B.); (F.D.)
| | - Dulce Andrade-Pavón
- Departamento de Fisiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu S/N, Mexico City 07738, Mexico;
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico;
| | - Omar Gómez-García
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (D.M.-S.); (C.H.E.); (O.G.-G.); (E.B.); (F.D.)
| | - Edson Barrera
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (D.M.-S.); (C.H.E.); (O.G.-G.); (E.B.); (F.D.)
| | - Lourdes Villa-Tanaca
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico;
| | - Francisco Delgado
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (D.M.-S.); (C.H.E.); (O.G.-G.); (E.B.); (F.D.)
| | - Joaquín Tamariz
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (D.M.-S.); (C.H.E.); (O.G.-G.); (E.B.); (F.D.)
| |
Collapse
|
6
|
Marques LP, Santos-Miranda A, Joviano-Santos JV, Teixeira-Fonseca JL, Alcântara FDS, Sarmento JO, Roman-Campos D. The fungicide tebuconazole modulates the sodium current of human Na V1.5 channels expressed in HEK293 cells. Food Chem Toxicol 2023; 180:113992. [PMID: 37633639 DOI: 10.1016/j.fct.2023.113992] [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: 12/20/2022] [Revised: 08/09/2023] [Accepted: 08/16/2023] [Indexed: 08/28/2023]
Abstract
The fungicide Tebuconazole is a widely used pesticide in agriculture and may cause cardiotoxicity. In our present investigation the effect of Tebuconazole on the sodium current (INa) of human cardiac sodium channels (NaV1.5) was studied using a heterologous expression system and whole-cell patch-clamp techniques. Tebuconazole reduced the amplitude of the peak INa in a concentration- and voltage-dependent manner. At the holding potential of -120 mV the IC50 was estimated at 204.1 ± 34.3 μM, while at -80 mV the IC50 was 0.3 ± 0.1 μM. The effect of the fungicide is more pronounced at more depolarized potentials, indicating a state-dependent interaction. Tebuconazole caused a negative shift in the half-maximal inactivation voltage and delayed recovery from fast inactivation of INa. Also, it enhanced closed-state inactivation, exhibited use-dependent block in a voltage-dependent manner. Furthermore, Tebuconazole reduced the increase in late sodium current induced by the pyrethroid insecticide β-Cyfluthrin. These results suggest that Tebuconazole can interact with NaV1.5 channels and modulate INa. The observed effects may lead to decreased cardiac excitability through reduced INa availability, which could be a new mechanism of cardiotoxicity to be attributed to the fungicide.
Collapse
Affiliation(s)
- Leisiane Pereira Marques
- Laboratory of Cardiobiology, Department of Biophysics, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Artur Santos-Miranda
- Department of Physiology and Biophysics, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Jorge Lucas Teixeira-Fonseca
- Laboratory of Cardiobiology, Department of Biophysics, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Fabiana da Silva Alcântara
- Laboratory of Cardiobiology, Department of Biophysics, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Jaqueline Oliveira Sarmento
- Laboratory of Cardiobiology, Department of Biophysics, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Danilo Roman-Campos
- Laboratory of Cardiobiology, Department of Biophysics, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil.
| |
Collapse
|
7
|
Agić D, Karnaš M, Tomić S, Komar M, Karačić Z, Rastija V, Bešlo D, Šubarić D, Molnar M. Experimental and computational evaluation of dipeptidyl peptidase III inhibitors based on quinazolinone-Schiff's bases. J Biomol Struct Dyn 2023; 41:7567-7581. [PMID: 36106968 DOI: 10.1080/07391102.2022.2123044] [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: 06/30/2022] [Accepted: 09/04/2022] [Indexed: 10/14/2022]
Abstract
Dipeptidyl peptidase III (DPP III) is a zinc-dependent enzyme that sequentially hydrolyzes biologically active peptides by cleaving dipeptides from their N-termini. Although its fundamental role is not been fully elucidated, human DPP III (hDPP III) has been recognized in several pathophysiological processes of interest for drug development. In this article 27 quinazolinone-Schiff's bases were studied for their inhibitory activity against hDPP III combining an in vitro experiment with a computational approach. The biochemical assay showed that most compounds exhibited inhibitory activity at the 100 μM concentration. The best QSAR model included descriptors from the following 2D descriptor groups: information content indices, 2D autocorrelations, and edge adjacency indices. Five compounds were found to be the most potent inhibitors with IC50 values below 10 µM, while molecular docking predicted that these compounds bind to the central enzyme cleft and interact with residues of the substrate binding subsites. Molecular dynamics simulations of the most potent inhibitor (IC50=0.96 µM) provided valuable information explaining the role of PHE109, ARG319, GLU327, GLU329, and ILE386 in the mechanism of the inhibitor binding and stabilization. This is the first study that gives insight into quinazolinone-Schiff's bases binding to this metalloenzyme.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Dejan Agić
- Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Maja Karnaš
- Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Sanja Tomić
- Divison of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Zagreb, Croatia
| | - Mario Komar
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Zrinka Karačić
- Divison of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Zagreb, Croatia
| | - Vesna Rastija
- Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Drago Bešlo
- Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Domagoj Šubarić
- Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Maja Molnar
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| |
Collapse
|
8
|
Lian X, Scott-Thomas A, Lewis JG, Bhatia M, Chambers ST. A Novel Monoclonal Antibody 1D2 That Broadly Inhibits Clinically Important Aspergillus Species. J Fungi (Basel) 2022; 8:jof8090960. [PMID: 36135685 PMCID: PMC9502797 DOI: 10.3390/jof8090960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/09/2022] [Accepted: 09/09/2022] [Indexed: 11/16/2022] Open
Abstract
Aspergillus fumigatus is a ubiquitous airborne fungus, is the predominant cause (>90%) of invasive aspergillosis (IA) in immunosuppressed patients and has a high mortality. New approaches to prevention and treatment are needed because of the poor efficacy, toxicity and side effects of the current anti-Aspergillus drugs on patients. Thus, we aim to explore a new avenue to combat Aspergillus infection by using a novel monoclonal antibody (mAb) 1D2 against a glycoprotein on the cell wall of Aspergillus. The ability of this mAb to inhibit attachment, germination, and growth of Aspergillus conidia and hyphae in vitro were examined. A dose-dependent growth inhibition of Aspergillus conidia in the presence of mAb 1D2 was found. The mAb 1D2 inhibited attachment of Aspergillus conidia to an untreated slide surface and fibronectin-treated surface compared to an unrelated mAb 6B10. When conidia were exposed to 1D2 concomitantly with inoculation into culture media, the mAb prevented the swelling and germination of conidia. This inhibitory ability of 1D2 was less apparent if it was added two hours after inoculation. Damage to hyphae was also observed when 1D2 was added to Aspergillus hyphae that had been incubated in media overnight. These in vitro results indicate that mAb 1D2 broadly inhibits clinically important Aspergillus species and has a promising therapeutic effect both as prophylaxis to inhibit an Aspergillus infection as well as a treatment.
Collapse
Affiliation(s)
- Xihua Lian
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand
- Department of Medical Imaging, The Second Clinical Medical School, Fujian Medical University, Quanzhou 362000, China
| | - Amy Scott-Thomas
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand
| | - John G. Lewis
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand
- Canterbury Health Laboratories, Christchurch 8140, New Zealand
| | - Madhav Bhatia
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand
| | - Stephen T. Chambers
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand
- Correspondence: ; Tel.: +64-3-364-0649
| |
Collapse
|
9
|
Silva-Silva JV, Moreira RF, Watanabe LA, de Souza CDSF, Hardoim DDJ, Taniwaki NN, Bertho AL, Teixeira KF, Cenci AR, Doring TH, Júnior JWDC, de Oliveira AS, Marinho PSB, Calabrese KDS, Marinho AMDR, Almeida-Souza F. Monomethylsulochrin isolated from biomass extract of Aspergillus sp. against Leishmania amazonensis: In vitro biological evaluation and molecular docking. Front Cell Infect Microbiol 2022; 12:974910. [PMID: 36093206 PMCID: PMC9452909 DOI: 10.3389/fcimb.2022.974910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 08/02/2022] [Indexed: 11/24/2022] Open
Abstract
Leishmaniasis represents a serious world health problem, with 1 billion people being exposed to infection and a broad spectrum of clinical manifestations with a potentially fatal outcome. Based on the limitations observed in the treatment of leishmaniasis, such as high cost, significant adverse effects, and the potential for drug resistance, the aim of the present study was to evaluate the leishmanicidal activity of the compounds pseurotin A and monomethylsulochrin isolated from the biomass extract of Aspergillus sp. The chromatographic profiles of the extract were determined by high-performance liquid chromatography coupled with a diode-array UV-Vis detector (HPLC-DAD-UV), and the molecular identification of the pseurotin A and monomethylsulochrin were carried out by electrospray ionization mass spectrometry in tandem (LC-ESI-MS-MS) and nuclear magnetic resonance (NMR). Antileishmanial activity was assayed against promastigote and intracellular amastigote of Leishmania amazonensis. As a control, cytotoxicity assays were performed in non-infected BALB/c peritoneal macrophages. Ultrastructural alterations in parasites were evaluated by transmission electron microscopy. Changes in mitochondrial membrane potential were determined by flow cytometry. Only monomethylsulochrin inhibited the promastigote growth (IC50 18.04 ± 1.11 µM), with cytotoxicity to peritoneal macrophages (CC50 5.09 91.63 ± 1.28 µM). Activity against intracellular amastigote forms (IC50 5.09 ± 1.06 µM) revealed an increase in antileishmanial activity when compared with promastigotes. In addition to a statistically significant reduction in the evaluated infection parameters, monomethylsulochrin altered the ultrastructure of the promastigote forms with atypical vacuoles, electron-dense corpuscles in the cytoplasm, changes at the mitochondria outer membrane and abnormal disposition around the kinetoplast. It was showed that monomethylsulochrin leads to a decrease in the mitochondrial membrane potential (25.9%, p = 0.0286). Molecular modeling studies revealed that monomethylsulochrin can act as inhibitor of sterol 14-alpha-demethylase (CYP51), a therapeutic target for human trypanosomiasis and leishmaniasis. Assessed for its drug likeness, monomethylsulochrin follows the Lipinski Rule of five and Ghose, Veber, Egan, and Muegge criteria. Furthermore, monomethylsulochrin can be used as a reference in the development of novel and therapeutically useful antileishmanial agents.
Collapse
Affiliation(s)
- João Victor Silva-Silva
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
- Laboratory of Medicinal and Computational Chemistry, Institute of Physics of São Carlos, University of São Paulo, São Carlos, SP, Brazil
| | | | | | | | - Daiana de Jesus Hardoim
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | | | - Alvaro Luiz Bertho
- Flow Cytometry Core Facility, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, RJ, Brazil
- Laboratory of Immunoparasitology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | - Kerolain Faoro Teixeira
- Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau, SC, Brazil
| | - Arthur Ribeiro Cenci
- Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau, SC, Brazil
| | - Thiago Henrique Doring
- Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau, SC, Brazil
| | - José Wilmo da Cruz Júnior
- Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau, SC, Brazil
| | - Aldo Sena de Oliveira
- Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau, SC, Brazil
| | | | - Kátia da Silva Calabrese
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
- *Correspondence: Kátia da Silva Calabrese, ; Andrey Moacir do Rosario Marinho,
| | - Andrey Moacir do Rosario Marinho
- Post-graduate Program in Chemistry, Federal University of Pará, Belém, PA, Brazil
- *Correspondence: Kátia da Silva Calabrese, ; Andrey Moacir do Rosario Marinho,
| | - Fernando Almeida-Souza
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
- Post-Graduate in Animal Sciences, State University of Maranhão, São Luís, Maranhão, Brazil
| |
Collapse
|
10
|
Lian X, Scott-Thomas A, Lewis JG, Bhatia M, MacPherson SA, Zeng Y, Chambers ST. Monoclonal Antibodies and Invasive Aspergillosis: Diagnostic and Therapeutic Perspectives. Int J Mol Sci 2022; 23:ijms23105563. [PMID: 35628374 PMCID: PMC9146623 DOI: 10.3390/ijms23105563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/12/2022] [Accepted: 05/13/2022] [Indexed: 12/13/2022] Open
Abstract
Invasive aspergillosis (IA) is a life-threatening fungal disease that causes high morbidity and mortality in immunosuppressed patients. Early and accurate diagnosis and treatment of IA remain challenging. Given the broad range of non-specific clinical symptoms and the shortcomings of current diagnostic techniques, most patients are either diagnosed as “possible” or “probable” cases but not “proven”. Moreover, because of the lack of sensitive and specific tests, many high-risk patients receive an empirical therapy or a prolonged treatment of high-priced antifungal agents, leading to unnecessary adverse effects and a high risk of drug resistance. More precise diagnostic techniques alongside a targeted antifungal treatment are fundamental requirements for reducing the morbidity and mortality of IA. Monoclonal antibodies (mAbs) with high specificity in targeting the corresponding antigen(s) may have the potential to improve diagnostic tests and form the basis for novel IA treatments. This review summarizes the up-to-date application of mAb-based approaches in assisting IA diagnosis and therapy.
Collapse
Affiliation(s)
- Xihua Lian
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand; (X.L.); (A.S.-T.); (J.G.L.); (M.B.); (S.A.M.)
- Department of Medical Imaging, The Second Clinical Medical School of Fujian Medical University, Quanzhou 362000, China
| | - Amy Scott-Thomas
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand; (X.L.); (A.S.-T.); (J.G.L.); (M.B.); (S.A.M.)
| | - John G. Lewis
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand; (X.L.); (A.S.-T.); (J.G.L.); (M.B.); (S.A.M.)
- Steroid and Immunobiochemistry Laboratory, Canterbury Health Laboratories, Christchurch 8140, New Zealand
| | - Madhav Bhatia
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand; (X.L.); (A.S.-T.); (J.G.L.); (M.B.); (S.A.M.)
| | - Sean A. MacPherson
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand; (X.L.); (A.S.-T.); (J.G.L.); (M.B.); (S.A.M.)
- Haematology Department, Christchurch Hospital, Christchurch 8011, New Zealand
| | - Yiming Zeng
- Department of Internal Medicine (Pulmonary and Critical Care Medicine), The Second Clinical Medical School of Fujian Medical University, Quanzhou 362000, China;
| | - Stephen T. Chambers
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand; (X.L.); (A.S.-T.); (J.G.L.); (M.B.); (S.A.M.)
- Correspondence: ; Tel.: +64-3-364-0649
| |
Collapse
|
11
|
Pellaton N, Sanglard D, Lamoth F, Coste AT. How Yeast Antifungal Resistance Gene Analysis Is Essential to Validate Antifungal Susceptibility Testing Systems. Front Cell Infect Microbiol 2022; 12:859439. [PMID: 35601096 PMCID: PMC9114767 DOI: 10.3389/fcimb.2022.859439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 03/14/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectivesThe antifungal susceptibility testing (AFST) of yeast pathogen alerts clinicians about the potential emergence of resistance. In this study, we compared two commercial microdilution AFST methods: Sensititre YeastOne read visually (YO) and MICRONAUT-AM read visually (MN) or spectrophotometrically (MNV), interpreted with Clinical and Laboratory Standards Institute and European Committee on Antimicrobial Susceptibility Testing criteria, respectively.MethodsOverall, 97 strains from 19 yeast species were measured for nine antifungal drugs including a total of 873 observations. First, the minimal inhibitory concentration (MIC) was compared between YO and MNV, and between MNV and MN, either directly or by assigning them to five susceptibility categories. Those categories were based on the number of MIC dilutions around the breakpoint or epidemiological cut-off reference values (ECOFFs or ECVs). Second, YO and MNV methods were evaluated for their ability to detect the elevation of MICs due to mutation in antifungal resistance genes, thanks to pairs or triplets of isogenic strains isolated from a single patient along a treatment previously analyzed for antifungal resistance gene mutations. Reproducibility measurement was evaluated, thanks to three quality control (QC) strains.ResultsYO and MNV direct MIC comparisons obtained a global agreement of 67%. Performing susceptibility category comparisons, only 22% and 49% of the MICs could be assigned to categories using breakpoints and ECOFFs/ECVs, respectively, and 40% could not be assigned due to the lack of criteria in both consortia. The YO and MN susceptibility categories gave accuracies as low as 50%, revealing the difficulty to implement this method of comparison. In contrast, using the antifungal resistance gene sequences as a gold standard, we demonstrated that both methods (YO and MN) were equally able to detect the acquisition of resistance in the Candida strains, even if MN showed a global lower MIC elevation than YO. Finally, no major differences in reproducibility were observed between the three AFST methods.ConclusionThis study demonstrates the valuable use of both commercial microdilution AFST methods to detect antifungal resistance due to point mutations in antifungal resistance genes. We highlighted the difficulty to conduct conclusive analyses without antifungal gene sequence data as a gold standard. Indeed, MIC comparisons taking into account the consortia criteria of interpretation remain difficult even after the effort of harmonization.
Collapse
Affiliation(s)
- Nicolas Pellaton
- Institute of Microbiology, University of Lausanne and University Hospital Center, Lausanne, Switzerland
| | - Dominique Sanglard
- Institute of Microbiology, University of Lausanne and University Hospital Center, Lausanne, Switzerland
| | - Frederic Lamoth
- Institute of Microbiology, University of Lausanne and University Hospital Center, Lausanne, Switzerland
- Infectious Diseases Service, Department of Medicine, Lausanne University Hospital, Lausanne, Switzerland
| | - Alix T. Coste
- Institute of Microbiology, University of Lausanne and University Hospital Center, Lausanne, Switzerland
- *Correspondence: Alix T. Coste,
| |
Collapse
|
12
|
Watanabe T, Ishikawa T, Sato H, Hirose N, Nonaka L, Matsumura K, Masubuchi A, Nishimura K, Masuda M. Characterization of Prototheca CYP51/ERG11 as a possible target for therapeutic drugs. Med Mycol 2021; 59:855-863. [PMID: 33838030 DOI: 10.1093/mmy/myab012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/17/2021] [Indexed: 11/13/2022] Open
Abstract
Prototheca spp. are achlorophyllous algae, ubiquitous in nature. An increasing number of human and animal cases of Prototheca infection (protothecosis) are reported, and antifungal azoles, which inhibit sterol 14α-demethylase (CYP51/ERG11) involved in ergosterol biosynthesis, have empirically been used for the treatment of protothecosis. Although Prototheca, like fungi, has ergosterol in the cell membrane, efficacy of the antifungal azoles in the treatment of protothecosis is controversial. For investigating the interaction of azole drugs with Prototheca CYP51/ERG11, the CYP51/ERG11 genomic genes of four strains of P. wickerhamii and one strain each of P. cutis and P. miyajii were isolated and characterized in this study. Compared with the CYP51/ERG11 gene of chlorophyllous Auxenochlorella Protothecoides, it is possible that ProtothecaCYP51/ERG11 gene, whose exon-intron structure appeared to be species-specific, lost introns associated with the loss of photosynthetic activity. Analysis of the deduced amino acid sequences revealed that Prototheca CYP51/ERG11 and fungal CYP51/ERG11 are phylogenetically distant from each other although their overall structures are similar. Our basic in silico studies predicted that antifungal azoles could bind to the catalytic pocket of Prototheca CYP51/ERG11. It was also suggested that amino acid residues away from the catalytic pocket might affect the drug susceptibility. The results of this study may provide useful insights into the phylogenetic taxonomy of Prototheca spp. in relationship to the CYP51/ERG11 structure and development of novel therapeutic drugs for the treatment of protothecosis. LAY SUMMARY Cases of infection by microalgae of Prototheca species are increasing. However, effective treatment has not been established yet. In this study, gene and structure of Prototheca's CYP51/ERG11, an enzyme which might serve as a target for therapeutic drugs, were characterized for the first time.
Collapse
Affiliation(s)
- Takahisa Watanabe
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi 321-0293, Japan.,Hirara Clinic, Okinawa 906-0012, Japan
| | - Tomohiro Ishikawa
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi 321-0293, Japan
| | - Hirotaka Sato
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi 321-0293, Japan
| | - Noriyuki Hirose
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi 321-0293, Japan.,BD Japan, Co., Ltd., Tokyo 107-0052, Japan
| | - Lisa Nonaka
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi 321-0293, Japan.,Department of Nutritional Science, Faculty of Human Life Science, Shokei University, Kumamoto 862-8678, Japan
| | - Kaori Matsumura
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi 321-0293, Japan
| | - Akira Masubuchi
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi 321-0293, Japan
| | - Kazuko Nishimura
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi 321-0293, Japan.,First Laboratories, Co. Ltd., Kanagawa 211-0013, Japan
| | - Michiaki Masuda
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi 321-0293, Japan
| |
Collapse
|
13
|
Roles for Structural Biology in the Discovery of Drugs and Agrochemicals Targeting Sterol 14α-Demethylases. J Fungi (Basel) 2021; 7:jof7020067. [PMID: 33498194 PMCID: PMC7908997 DOI: 10.3390/jof7020067] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/08/2021] [Accepted: 01/17/2021] [Indexed: 02/06/2023] Open
Abstract
Antifungal drugs and antifungal agrochemicals have significant limitations. These include several unintended consequences of their use including the growing importance of intrinsic and acquired resistance. These problems underpin an increasingly urgent need to improve the existing classes of antifungals and to discover novel antifungals. Structural insights into drug targets and their complexes with both substrates and inhibitory ligands increase opportunity for the discovery of more effective antifungals. Implementation of this promise, which requires multiple skill sets, is beginning to yield candidates from discovery programs that could more quickly find their place in the clinic. This review will describe how structural biology is providing information for the improvement and discovery of inhibitors targeting the essential fungal enzyme sterol 14α-demethylase.
Collapse
|