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Guseva GB, Eremeeva YV, Antina EV, Gilfanov IR, Lisovskaya SA, Ostolopovskaya OV, Trizna EY, Kayumov AR, Nikitina LE. Effect of meso-substituents and medium properties on the photo- and pH-stability, penetration efficiency into bacterial and microscopic fungi cells of terpene-BODIPY conjugates. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 308:123701. [PMID: 38070313 DOI: 10.1016/j.saa.2023.123701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 11/17/2023] [Accepted: 11/26/2023] [Indexed: 01/13/2024]
Abstract
In order to expand the arsenal of tools and areas for practical use of BODIPY dyes as bifunctional fluorescent theranostics, we studied the effect of the meso-substituents nature and medium properties on photo- and pH-stability, efficiency of singlet oxygen generation, and affinity to biostructures of terpene-BODIPY conjugates. The BODIPYs fused with myrtenol or thiotherpenoid via carboxylic acid residues exhibit high stability over a wide pH range and the presence of a bulky substituent at the meso-position of BODIPY conjugates increases their photostability two-fold compared to structurally related meso-unsubstituted analogues. Furthermore, the photodegradation rate of the conjugates directly depends on their ability to generate singlet oxygen and the course probability of the corresponding red-ox reactions involving reactive oxygen species. The conjugate of BODIPY with a thiotherpenoid demonstrated high ability to penetrate the membranes of filamentous and yeast-like fungi and bind to membrane of organelles in the fungal cell. At the same time, this compound also had a high ability to penetrate into biofilms of Staphylococcus aureus and Klebsiella pneumoniae and into bacterial cells within the matrix, which makes this compound promising for staining intracellular structures of eukaryotic cells and bacteria embedded into biofilms.
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Affiliation(s)
- Galina B Guseva
- G.A. Krestov Institute of Solution Chemistry of Russian Academy of Sciences, 153045 Ivanovo, Russia.
| | - Yuliya V Eremeeva
- G.A. Krestov Institute of Solution Chemistry of Russian Academy of Sciences, 153045 Ivanovo, Russia.
| | - Elena V Antina
- G.A. Krestov Institute of Solution Chemistry of Russian Academy of Sciences, 153045 Ivanovo, Russia.
| | - Ilmir R Gilfanov
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia.
| | - Svetlana A Lisovskaya
- Kazan State Medical University, Faculty of Medicine and Biology, 420012 Kazan, Russia; Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia; Scientific Research Institute of Epidemiology and Microbiology, 420015 Kazan, Russia.
| | - Olga V Ostolopovskaya
- Kazan State Medical University, Faculty of Medicine and Biology, 420012 Kazan, Russia; Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia.
| | - Elena Y Trizna
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia.
| | - Airat R Kayumov
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia.
| | - Liliya E Nikitina
- Kazan State Medical University, Faculty of Medicine and Biology, 420012 Kazan, Russia; Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia.
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2
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Abdulshaheed AA, Hanafiah MM, Nawaz R, Muslim SN. Evaluation of antibacterial, antifungal and antibiofilm activities of A. baumannii-derived tannase and gallic acid against uropathogenic microorganisms. Microb Pathog 2024; 187:106534. [PMID: 38184176 DOI: 10.1016/j.micpath.2024.106534] [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: 11/08/2023] [Revised: 12/28/2023] [Accepted: 01/02/2024] [Indexed: 01/08/2024]
Abstract
One of the most prevalent infectious diseases and a key driver of antibiotic prescriptions in pediatrics is urinary tract infection (UTI). Due to the emergence of more resistant uropathogenic bacterial and fungal strains, current treatments are no longer effective, necessitating the urgent development of novel antibacterial and antifungal drugs. In this study, the antifungal, antibacterial, and anti-biofilm capabilities of compounds, such as tannase (TN) and gallic acid (GA), which were produced from a novel natural source, Acinetobacter baumannii (AB11) bacteria, were assessed for the inactivation of uropathogenic microorganisms (UMs). Ammonium sulphate precipitation, ion exchange, high-performance liquid chromatography, and gel filtration were used to purify TN and GA that were isolated from A. baumannii. A 43.08 % pure TN with 1221.2 U/mg specific activity and 10.51 mg/mL GA was obtained. The antibacterial, antifungal and anti-biofilm activities of TN and GA were evaluated against UMs and compared to those of commercially available antibiotics including sulfamethoxazole (SXT), levofloxacin (LEV), ciprofloxacin (CIP), amikacin (Ak), and nitrofurantoin (F). The results showed that TN and GA were superior to commercial antibiotics in their ability to inactivate UMs and considerably reduced biofilms formation. Additionally, the GA emerges as the top substitute for currently available medications, demonstrating superior antibacterial and antibiofilm properties against all UMs evaluated in this study. The results of this investigation showed that A. baumannii-derived TN and GA could be utilized as an alternative medication to treat UTIs.
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Affiliation(s)
- Alaa A Abdulshaheed
- Department of Microbiology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, 43600, Selangor, Malaysia; Department of Biology, College of Science, University of Baghdad, 10071, Baghdad, Iraq
| | - Marlia Mohd Hanafiah
- Centre for Tropical Climate Change System, Institute of Climate Change, Universiti Kebangsaan Malaysia, Bangi, 43600, Selangor, Malaysia; Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia.
| | - Rab Nawaz
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Sahira Nsayef Muslim
- Department of Biology, College of Science, Al-Mustansiriyah University, Baghdad, 10422, Iraq
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Dutta D, Show S, Pal A, Anifowoshe AT, Prasad Aj M, Nongthomba U. The association of cysteine to thiomersal attenuates its apoptosis-mediated cytotoxicity in zebrafish. CHEMOSPHERE 2024; 350:141070. [PMID: 38160945 DOI: 10.1016/j.chemosphere.2023.141070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 12/27/2023] [Accepted: 12/28/2023] [Indexed: 01/03/2024]
Abstract
Thiomersal (TM) is an excellent preservative that is used in a wide variety of products, like pharmaceuticals, cosmetics, and vaccines, etc. Its usage has been in decline because of safety concerns. Since vaccine production is on the rise, its use may increase further in low-income and developing countries, as a cost-effective vaccine preservative. Further, Thiomersal is still being used as an essential component in various pharmaceutical preparations. In this light, the present study addresses its mechanism of toxicity in zebrafish and unveils a novel strategy for lessening its negative effects by conjugating cysteine to it, while retaining its antibacterial efficacy. We show that the mitochondrial membrane potential is destabilised by TM, leading to the induction of apoptosis. Interestingly, TM-cysteine conjugate (at a ratio of 1:1) showed no toxicity in zebrafish, whereas TM alone was highly toxic. Importantly, assaying for the bactericidal activity, tested using Escherichia coli (E. coli) and Methicillin-resistant Staphylococcus aureus (MRSA), revealed that the conjugate retains the antibacterial activity, demonstrating that the TM-cysteine conjugate is a safer alternative to TM as a vaccine preservative, and in all the other products that still use TM.
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Affiliation(s)
- Debanjan Dutta
- Department of Developmental Biology and Genetics, Indian Institute of Science, Bangalore, 560012, India.
| | - Sautan Show
- Department of Developmental Biology and Genetics, Indian Institute of Science, Bangalore, 560012, India; Department of Biochemistry, Pooja Bhagavat Memorial Mahajana Postgraduate Center, Mysore-570016, India
| | - Anabadya Pal
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani, 741235, India
| | - Abass Toba Anifowoshe
- Department of Developmental Biology and Genetics, Indian Institute of Science, Bangalore, 560012, India
| | - Mahadesh Prasad Aj
- Department of Biochemistry, Pooja Bhagavat Memorial Mahajana Postgraduate Center, Mysore-570016, India
| | - Upendra Nongthomba
- Department of Developmental Biology and Genetics, Indian Institute of Science, Bangalore, 560012, India.
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Jiang H, Chen J, Du X, Feng D, Zhang Y, Qi J, He Y, An Z, Lu Y, Ge C, Wang Y. Unveiling Synergistic Potency: Exploring Butyrolactone I to Enhance Gentamicin Efficacy against Methicillin-Resistant Staphylococcus aureus (MRSA) Strain USA300. ACS Infect Dis 2024; 10:196-214. [PMID: 38127778 DOI: 10.1021/acsinfecdis.3c00534] [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] [Indexed: 12/23/2023]
Abstract
Staphylococcus aureus, including MRSA strains, poses significant health risks, imposing a significant disease burden and mortality. We investigate butyrolactone I (BL-1), a marine-derived metabolite from Aspergillus terreus, enhancing aminoglycoside efficacy against MRSA. A promising synergy is observed with BL-1 and various aminoglycosides, marked by low fractional inhibitory concentration indexes (FICIs < 0.5). Comprehensive studies utilizing USA300 MRSA and gentamicin reveal a remarkable one-fourth reduction in minimum inhibitory concentration (MIC) with 20 μg/mL BL-1. A relative abundance assay indicates that BL-1 enhances gentamicin uptake while restraining extracellular presence, involving intricate transmembrane signaling and molecular interactions. RNA-Seq analysis yielded an unexpected revelation, unveiling a distinctive gene expression profile and distinguishing it from other treatment approaches. Furthermore, meticulous analyses validated the extensive perturbations induced by BL-1 exposure, affecting diverse biological functions, encompassing glycolysis, amino acid metabolisms, substance transmembrane transport, and virulence generation. These valuable insights inspired further confirmation of bacterial virulence and the modulation of membrane permeability resulting from BL-1 treatment. Phenotypic validations corroborated our observations, revealing reduced membrane permeability and hemolytic toxicity, albeit demanding a deeper comprehension of the intricate interplay underlying these actions. Our study contributes crucial mechanistic insights to the development of therapeutic strategies against this notorious pathogen and the judicious employment of aminoglycosides. Additionally, it elucidates marine-derived metabolites' ecological and functional roles, exemplified by fungal quorum sensing signals. These compounds could give producers a competitive edge, inhibiting microorganism proliferation and suggesting novel approaches for combating resistant pathogens.
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Affiliation(s)
- Hanxiang Jiang
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
| | - Jiaqin Chen
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
| | - Xinyang Du
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
| | - Dong Feng
- Nanjing Southern Pharmaceutical Technology Co., Ltd., Nanjing 211100, China
| | - Yanjun Zhang
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
| | - Jiangfeng Qi
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
| | - Yajing He
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
| | - Zhilong An
- Nanjing Southern Pharmaceutical Technology Co., Ltd., Nanjing 211100, China
| | - Yuanyuan Lu
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
| | - Chun Ge
- Department of Pharmacy, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
- Department of Clinical Pharmacy, School of Basic Medicine & Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Ying Wang
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
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Sulaiman R, Trizna E, Kolesnikova A, Khabibrakhmanova A, Kurbangalieva A, Bogachev M, Kayumov A. Antimicrobial and Biofilm-Preventing Activity of l-Borneol Possessing 2(5H)-Furanone Derivative F131 against S. aureus—C. albicans Mixed Cultures. Pathogens 2022; 12:pathogens12010026. [PMID: 36678375 PMCID: PMC9866062 DOI: 10.3390/pathogens12010026] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/15/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022] Open
Abstract
Candida albicans and Staphylococcus aureus are human pathogens that are able to form mixed biofilms on the surface of mucous membranes, implants and catheters. In biofilms, these pathogens have increased resistance to antimicrobials, leading to extreme difficulties in the treatment of mixed infections. The growing frequency of mixed infections caused by S. aureus and C. albicans requires either the development of new antimicrobials or the proposal of alternative approaches to increase the efficiency of conventional ones. Here, we show the antimicrobial, biofilm-preventing and biofilm-eradicating activity of 2(5H)-furanone derivative F131, containing an l-borneol fragment against S. aureus-C. albicans mixed biofilms. Furanone F131 is also capable of inhibiting the formation of monospecies and mixed biofilms by S. aureus and C. albicans. The minimal biofilm-prevention concentration (MBPC) of this compound was 8-16 μg/mL for S. aureus and C. albicans mono- and two-species biofilms. While the compound demonstrates slightly lower activity compared to conventional antimicrobials (gentamicin, amikacin, fluconazole, terbinafine and benzalkonium chloride), F131 also increases the antimicrobial activity of fluconazole-gentamicin and benzalkonium chloride against mixed biofilms of S. aureus-C. albicans, thus reducing MBPC of fluconazole-gentamicin by 4-16 times and benzalkonium chloride twofold. F131 does not affect the transcription of the MDR1, CDR1 and CDR2 genes, thus suggesting a low risk of micromycete resistance to this compound. Altogether, combined use of antibiotics with a F131 could be a promising option to reduce the concentration of fluconazole used in antiseptic compositions and reduce the toxic effect of benzalkonium chloride and gentamicin. This makes them an attractive starting point for the development of alternative antimicrobials for the treatment of skin infections caused by S. aureus-C. albicans mixed biofilms.
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Affiliation(s)
- Rand Sulaiman
- Laboratory of Molecular Genetics of Microorganisms, Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia
| | - Elena Trizna
- Laboratory of Molecular Genetics of Microorganisms, Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia
| | - Alena Kolesnikova
- Laboratory of Molecular Genetics of Microorganisms, Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia
| | - Alsu Khabibrakhmanova
- Biofunctional Chemistry Laboratory, Alexander Butlerov Institute of Chemistry, Kazan Federal University, 420008 Kazan, Russia
| | - Almira Kurbangalieva
- Biofunctional Chemistry Laboratory, Alexander Butlerov Institute of Chemistry, Kazan Federal University, 420008 Kazan, Russia
| | - Mikhail Bogachev
- Biomedical Engineering Research Centre, St. Petersburg Electrotechnical University, 197022 St. Petersburg, Russia
| | - Airat Kayumov
- Laboratory of Molecular Genetics of Microorganisms, Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia
- Correspondence:
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Makarov D, Fadeeva Y, Safonova E, Shmukler L. Predictive modeling of antibacterial activity of ionic liquids by machine learning methods. Comput Biol Chem 2022; 101:107775. [DOI: 10.1016/j.compbiolchem.2022.107775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/24/2022] [Accepted: 10/03/2022] [Indexed: 11/03/2022]
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7
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Bioactive compounds, antibacterial and antioxidant activities of methanol extract of Tamarindus indica Linn. Sci Rep 2022; 12:9432. [PMID: 35676439 PMCID: PMC9178027 DOI: 10.1038/s41598-022-13716-x] [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: 01/07/2022] [Accepted: 05/16/2022] [Indexed: 11/08/2022] Open
Abstract
AbstractTamarindus indica is one of the tropical medicinal plants that has been attributed curative potential of numerous diseases by many rural dwellers. This study was designed to evaluate the antioxidant, antibacterial activities and also to determine the various chemical constituents responsible for its pharmacological activities. The methanol extract of Tamarindus indica fruit pulp was analyzed by Gas Chromatography/Mass Spectrometer to determine the volatile compounds present. The antioxidant activities were performed using DPPH and FRAP method and the antibacterial activity was tested against some common pathogens by macro broth dilution method. The GCMS analysis shows the presence of 37 compounds, out of which 14 had their peak area percentages ≥ 1% and only two compounds had no reported pharmacological activities. Most of the bioactive compounds including 5-Hydroxymethylfurfural (31.06%)-3-O-Methyl-d-glucose (16.31%), 1,6-anhydro-β-D-Glucopyranose (9.95%), 5-methyl-Furancarboxaldehyde (3.2%), Triethylenediamine (1.17%), 1-(2-furanyl)-1-Propcanone (2.18%), Methyl 2-furoate (3.14%), Levoglucosenone (3.21%), methyl ester-Hepta-2,4-dienoic acid, (8.85%), 2,3-dihydro-3,5-dihydrox-4H-Pyran-4-one (3.4%), O-α-D-glucopyranosyl-(1.fwdarw.3)-β-D-fructofuranosyl-α-D-Glucopyranoside (2.18%), n-Hexadecanoic acid (1.38%), 2-Heptanol, acetate (1.29%), 5-[(5-methyl-2-fur-2-Furancarboxaldehyde (1.08%), 3-Methyl-2-furoic acid (1.05%) and cis-Vaccenic acid (2.85%)have been reported with different activities such as antibacterial, antifungal, antitubercular, anticancer, antioxidant and other prophylactic activities. The extract demonstrated inhibitory potential against all tested pathogen. However, Plesiomonas shigellosis ATCC 15903 and Bacillus pumillus ATCC 14884 are more sensitive with the MIC of 0.22 and 0.44 mg/ml respectively. The antioxidant activity was relatively low due to the low phenolic content of the extract. This shows that there is a strong correlation between antioxidant activities and phenolic content. GC–MS analysis revealed the presence of bioactive phytoconstituents with various biological activities and this justifies the rationale behind its usage as a curative therapy by many local dwellers.
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Chan YS, Chong KP. Bioactive Compounds of Ganoderma boninense Inhibited Methicillin-Resistant Staphylococcus aureus Growth by Affecting Their Cell Membrane Permeability and Integrity. Molecules 2022; 27:838. [PMID: 35164103 PMCID: PMC8840476 DOI: 10.3390/molecules27030838] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/16/2022] [Accepted: 01/19/2022] [Indexed: 12/31/2022] Open
Abstract
Some species of Ganoderma, such as G. lucidum, are well-known as traditional Chinese medicine (TCM), and their pharmacological value was scientifically proven in modern days. However, G. boninense is recognized as an oil palm pathogen, and its biological activity is scarcely reported. Hence, this study aimed to investigate the antibacterial properties of G. boninense fruiting bodies, which formed by condensed mycelial, produced numerous and complex profiles of natural compounds. Extract was cleaned up with normal-phase SPE and its metabolites were analyzed using liquid chromatography-mass spectrometry (LCMS). From the disc diffusion and broth microdilution assays, strong susceptibility was observed in methicillin-resistant Staphylococcus aureus (MRSA) in elute fraction with zone inhibition of 41.08 ± 0.04 mm and MIC value of 0.078 mg mL-1. A total of 23 peaks were detected using MS, which were putatively identified based on their mass-to-charge ratio (m/z), and eight compounds, which include aristolochic acid, aminoimidazole ribotide, lysine sulfonamide 11v, carbocyclic puromycin, fenbendazole, acetylcaranine, tigecycline, and tamoxifen, were reported in earlier literature for their antimicrobial activity. Morphological observation via scanning electron microscope (SEM), cell membrane permeability, and integrity assessment suggest G. boninense extract induces irreversible damage to the cell membrane of MRSA, thus causing cellular lysis and death.
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Affiliation(s)
| | - Khim-Phin Chong
- Faculty of Science and Natural Resources, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia;
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Lin Y, Huang L, Zhang X, Yang J, Chen X, Li F, Liu J, Huang R. Multi-Omics Analysis Reveals Anti- Staphylococcus aureus Activity of Actinomycin D Originating from Streptomyces parvulus. Int J Mol Sci 2021; 22:ijms222212231. [PMID: 34830114 PMCID: PMC8621895 DOI: 10.3390/ijms222212231] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 12/12/2022] Open
Abstract
Staphylococcus aureus (S. aureus) is a common pathogen that causes various serious diseases, including chronic infections. Discovering new antibacterial agents is an important aspect of the pharmaceutical field because of the lack of effective antibacterial drugs. In our research, we found that one anti-S. aureus substance is actinomycin D, originating from Streptomyces parvulus (S. parvulus); then, we further focused on the anti-S. aureus ability and the omics profile of S. aureus in response to actinomycin D. The results revealed that actinomycin D had a significant inhibitory activity on S. aureus with a minimum inhibitory concentration (MIC) of 2 μg/mL and a minimum bactericidal concentration (MBC) of 64 μg/mL. Bacterial reactive oxygen species (ROS) increased 3.5-fold upon treatment with actinomycin D, as was measured with the oxidation-sensitive fluorescent probe DCFH-DA, and H2O2 increased 3.5 times with treatment by actinomycin D. Proteomics and metabolomics, respectively, identified differentially expressed proteins in control and treatment groups, and the co-mapped correlation network of proteomics and metabolomics annotated five major pathways that were potentially related to disrupting the energy metabolism and oxidative stress of S. aureus. All findings contributed to providing new insight into the mechanisms of the anti-S. aureus effects of actinomycin D originating from S. parvulus.
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Affiliation(s)
- Yuqi Lin
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China; (Y.L.); (L.H.); (J.Y.); (X.C.); (F.L.)
| | - Li Huang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China; (Y.L.); (L.H.); (J.Y.); (X.C.); (F.L.)
| | - Xiaoyong Zhang
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China;
| | - Jiajia Yang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China; (Y.L.); (L.H.); (J.Y.); (X.C.); (F.L.)
| | - Xiaodan Chen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China; (Y.L.); (L.H.); (J.Y.); (X.C.); (F.L.)
| | - Fengming Li
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China; (Y.L.); (L.H.); (J.Y.); (X.C.); (F.L.)
| | - Jun Liu
- Laboratory of Pathogenic Biology, The Marine Biomedical Research Institute, Dongguan Key Laboratory of Medical Bioactive Molecular Developmental and Translational Research, Guangdong Medical University, Zhanjiang 524023, China
- Correspondence: (J.L.); (R.H.)
| | - Riming Huang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China; (Y.L.); (L.H.); (J.Y.); (X.C.); (F.L.)
- Correspondence: (J.L.); (R.H.)
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In Vivo Biological Evaluation of Biodegradable Nanofibrous Membranes Incorporated with Antibiofilm Compounds. Polymers (Basel) 2021; 13:polym13152457. [PMID: 34372057 PMCID: PMC8347157 DOI: 10.3390/polym13152457] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 07/19/2021] [Accepted: 07/20/2021] [Indexed: 12/20/2022] Open
Abstract
Guided bone regeneration involves excluding non-osteogenic cells from the surrounding soft tissues and allowing osteogenic cells originating from native bone to inhabit the defect. The aim of this work was to fabricate, analyze antibiofilm activity and evaluate in vivo biological response of poly (lactic-co-glycolic acid) (PLGA) electrospun membranes incorporated with tea tree oil and furan-2(5H)-one. Samples were exposed to Streptococcus mutans culture and after 48 h incubation, biofilm was evaluated by colony forming units (CFU/mL) followed by scanning electron microscopy. Additionally, seventy-five Balb-C mice were divided into five experimental groups for subcutaneous implantation: tea tree oil loaded PLGA electrospun fiber membrane, furanone loaded PLGA electrospun fiber membrane, neat PLGA electrospun fiber membrane, a commercially available PLGA membrane –Pratix® and Sham (no-membrane implantation). Post implantation period of each experimental group (1, 3 and 9 weeks), samples were collected and processed for by histological descriptive and semiquantitative evaluation. Results showed a significant reduction of bacterial attachment on tea tree oil and furan-2(5H)-one incorporated membranes. Macrophage counts were significant found in all the materials implanted, although giant cells were predominantly associated with electrospun fiber membranes. The incorporation of antibiofilm compounds in nanofibers membranes did not incite inflammatory response significantly different in comparison with pure PLGA electrospun membranes, indicating its potential for development of novel functionalized membranes targeting the inhibition of bacterial biofilms on membrane-grafting materials.
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Sharonova N, Nikitin E, Terenzhev D, Lyubina A, Amerhanova S, Bushmeleva K, Rakhmaeva A, Fitsev I, Sinyashin K. Comparative Assessment of the Phytochemical Composition and Biological Activity of Extracts of Flowering Plants of Centaurea cyanus L., Centaurea jacea L. and Centaurea scabiosa L. PLANTS 2021; 10:plants10071279. [PMID: 34201790 PMCID: PMC8309150 DOI: 10.3390/plants10071279] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 06/09/2021] [Accepted: 06/16/2021] [Indexed: 11/16/2022]
Abstract
The data on the phytochemical composition and biological activity for flowering plant extracts of the genus Centaurea (Knapweed)-cornflower (Centaurea cyanus L.), brown knapweed (Centaurea jacea L.), and greater knapweed (Centaurea scabiosa L.), which are typical representatives of the flora in the middle belt of the Russian Federation, were obtained. For the first time, biologically active substances such as pyranone, coumaran (2,3-dihydrobenzofuran), and 5-hydroxymethylfurfural were identified in ethanol and methanol extracts of Centaurea scabiosa L. by gas chromatography-mass spectrometry. Catechol and α-amyrin were the major components of the ethanol extract from Centaurea cyanus L., and flavone was the major component of Centaurea jacea L. flower extract. The greatest antimicrobial activity against phytopathogens was detected in Centaurea scabiosa L. when extracting freshly harvested flower biomass with methyl tert-butyl ether at room temperature: the minimum inhibitory concentrations were 60-120 µg/mL, the minimum fungicidal concentration was 120 µg/mL, and the minimum bactericidal concentration was 250 µg/mL. The low antioxidant activity of the studied plant extracts was established using the maximum values of Centaurea jacea L. Ethanol extract of Centaurea cyanus L. flowers had low antimicrobial and antioxidant activity. The extracts showed no phytotoxicity to garden cress germination but inhibited the growth of juvenile plants, especially roots. The greatest phytotoxic effect was revealed with methyl tert-butyl ether, where the depression of growth indicators was 35% or more.
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Affiliation(s)
- Natalia Sharonova
- Federal State Budgetary Institution of Science Federal Research Center «Kazan Scientific Center of Russian Academy of Sciences», ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.N.); (D.T.); (A.L.); (S.A.); (K.B.); (A.R.); (K.S.)
- Correspondence:
| | - Evgeny Nikitin
- Federal State Budgetary Institution of Science Federal Research Center «Kazan Scientific Center of Russian Academy of Sciences», ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.N.); (D.T.); (A.L.); (S.A.); (K.B.); (A.R.); (K.S.)
| | - Dmitriy Terenzhev
- Federal State Budgetary Institution of Science Federal Research Center «Kazan Scientific Center of Russian Academy of Sciences», ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.N.); (D.T.); (A.L.); (S.A.); (K.B.); (A.R.); (K.S.)
| | - Anna Lyubina
- Federal State Budgetary Institution of Science Federal Research Center «Kazan Scientific Center of Russian Academy of Sciences», ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.N.); (D.T.); (A.L.); (S.A.); (K.B.); (A.R.); (K.S.)
| | - Syumbelya Amerhanova
- Federal State Budgetary Institution of Science Federal Research Center «Kazan Scientific Center of Russian Academy of Sciences», ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.N.); (D.T.); (A.L.); (S.A.); (K.B.); (A.R.); (K.S.)
| | - Kseniya Bushmeleva
- Federal State Budgetary Institution of Science Federal Research Center «Kazan Scientific Center of Russian Academy of Sciences», ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.N.); (D.T.); (A.L.); (S.A.); (K.B.); (A.R.); (K.S.)
| | - Adelya Rakhmaeva
- Federal State Budgetary Institution of Science Federal Research Center «Kazan Scientific Center of Russian Academy of Sciences», ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.N.); (D.T.); (A.L.); (S.A.); (K.B.); (A.R.); (K.S.)
| | - Igor Fitsev
- Federal State Budgetary Scientific Institution «Federal Center for Toxicological, Radiation, and Biological Safety», Nauchny Gorodok-2, 420075 Kazan, Russia;
| | - Kirill Sinyashin
- Federal State Budgetary Institution of Science Federal Research Center «Kazan Scientific Center of Russian Academy of Sciences», ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.N.); (D.T.); (A.L.); (S.A.); (K.B.); (A.R.); (K.S.)
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12
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Design, synthesis, antibacterial activity and toxicity of novel quaternary ammonium compounds based on pyridoxine and fatty acids. Eur J Med Chem 2020; 211:113100. [PMID: 33385851 DOI: 10.1016/j.ejmech.2020.113100] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 12/07/2020] [Accepted: 12/07/2020] [Indexed: 12/26/2022]
Abstract
A diverse series of 43 novel "soft antimicrobials" based on quaternary ammonium pyridoxine derivatives which include six-membered acetals and ketals of pyridoxine bound via cleavable linker moieties (amide, ester) with a fragment of fatty carboxylic acid was designed. Nine compounds exhibited in vitro promising antibacterial activity against Gram-positive and Gram-negative bacterial strains with MIC values comparable with reference antiseptics miramistin, benzalkonium chloride and chlorohexidine. On various clinical isolates, the lead compounds 6i and 12a exhibited antibacterial activity comparable with that of benzalkonium chloride while higher than that of miramistin. Moreover, 6i and 12a were able to kill bacteria embedded into the matrix of mono- and dual species biofilms. The treatment of bacterial cells by either 6i and 12a lead to fast depolarization of the membrane suggesting that the membrane is an apparent molecular target of compounds. 6i and 12a were non mutagenic neither in SOS-chromotest nor in Ames test and non-toxic in vivo at acute oral (LD50 > 2000 mg/kg) and cutaneous administration (LD50 > 2500 mg/kg) on mice. Taken together, our data allow suggesting described active compounds as promising starting point for the new antibacterial agents development.
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13
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Guseva G, Antina E, Berezin M, Lisovskaya S, Pavelyev R, Kayumov A, Lodochnikova O, Islamov D, Usachev K, Boichuk S, Nikitina L. Spectroscopic and In Vitro Investigations of Boron(III) Complex with Meso-4-Methoxycarbonylpropylsubstituted Dipyrromethene for Fluorescence Bioimaging Applications. Molecules 2020; 25:molecules25194541. [PMID: 33023057 PMCID: PMC7582871 DOI: 10.3390/molecules25194541] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/28/2020] [Accepted: 09/30/2020] [Indexed: 11/16/2022] Open
Abstract
This study focuses on the behavior of a new fluorescent marker for labeling individual biomolecules and staining cell organelles developed on a meso-substituted BODIPY platform. Boron(III) complex with meso-4-methoxycarbonylpropylsubstituted 3,3’,5,5’-tetramethyl-2,2′-dipyrromethene has been synthesized and identified via visible, UV-, NMR- and MS-spectra X-ray. The behavior of fluorophore in solutions has been studied with various experimental techniques. It has been found that luminophore exhibits a high quantum yield (almost ~100–75%) in the blue-green region (513–520 nm) and has high photostability. In addition, biological analysis indicates that the fluorophore exhibits a tendency to effectively penetrate into cell membranes. On the other hand, the proposed BODIPY can be used to study the significant differences among a large number of pathogens of mycotic infections, as well as to visualize structural changes in the plasma membrane, which is necessary for the clearance of mammalian cells undergoing apoptotic cell death.
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Affiliation(s)
- Galina Guseva
- G.A. Krestov Institute of Solution Chemistry of Russian Academy of Sciences, 1 Akademicheskaya st., 153045 Ivanovo, Russia; (E.A.); (M.B.)
- Correspondence:
| | - Elena Antina
- G.A. Krestov Institute of Solution Chemistry of Russian Academy of Sciences, 1 Akademicheskaya st., 153045 Ivanovo, Russia; (E.A.); (M.B.)
| | - Mikhail Berezin
- G.A. Krestov Institute of Solution Chemistry of Russian Academy of Sciences, 1 Akademicheskaya st., 153045 Ivanovo, Russia; (E.A.); (M.B.)
| | - Svetlana Lisovskaya
- Kazan State Medical University, 49 Butlerova st., 420012 Kazan, Russia; (S.L.); (S.B.); (L.N.)
- Scientific Research Institute of Epidemiology and Microbiology, 67 Bolshaya Krasnaya st., 420015 Kazan, Russia
| | - Roman Pavelyev
- Kazan Federal University, 18 Kremlyovskaya st., 420008 Kazan, Russia; (R.P.); (A.K.); (O.L.); (D.I.); (K.U.)
| | - Airat Kayumov
- Kazan Federal University, 18 Kremlyovskaya st., 420008 Kazan, Russia; (R.P.); (A.K.); (O.L.); (D.I.); (K.U.)
| | - Olga Lodochnikova
- Kazan Federal University, 18 Kremlyovskaya st., 420008 Kazan, Russia; (R.P.); (A.K.); (O.L.); (D.I.); (K.U.)
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov, 420088 Kazan, Russia
| | - Daut Islamov
- Kazan Federal University, 18 Kremlyovskaya st., 420008 Kazan, Russia; (R.P.); (A.K.); (O.L.); (D.I.); (K.U.)
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov, 420088 Kazan, Russia
| | - Konstantin Usachev
- Kazan Federal University, 18 Kremlyovskaya st., 420008 Kazan, Russia; (R.P.); (A.K.); (O.L.); (D.I.); (K.U.)
| | - Sergei Boichuk
- Kazan State Medical University, 49 Butlerova st., 420012 Kazan, Russia; (S.L.); (S.B.); (L.N.)
| | - Liliya Nikitina
- Kazan State Medical University, 49 Butlerova st., 420012 Kazan, Russia; (S.L.); (S.B.); (L.N.)
- Kazan Federal University, 18 Kremlyovskaya st., 420008 Kazan, Russia; (R.P.); (A.K.); (O.L.); (D.I.); (K.U.)
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14
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Garipov MR, Sabirova AE, Pavelyev RS, Shtyrlin NV, Lisovskaya SA, Bondar OV, Laikov AV, Romanova JG, Bogachev MI, Kayumov AR, Shtyrlin YG. Targeting pathogenic fungi, bacteria and fungal-bacterial biofilms by newly synthesized quaternary ammonium derivative of pyridoxine and terbinafine with dual action profile. Bioorg Chem 2020; 104:104306. [PMID: 33011535 DOI: 10.1016/j.bioorg.2020.104306] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 09/18/2020] [Accepted: 09/20/2020] [Indexed: 01/29/2023]
Abstract
Many pathogenic bacteria and microscopic fungi form rigid polymicrobial biofilms this way enhancing their resistant to treatment. A series of novel pyridoxine-based quaternary ammonium derivatives of terbinafine characterized by both antifungal and antibacterial activities was designed. The leading compound named KFU-127 exhibits promising antifungal and antibacterial activities against various bacteria and micromycetes in both planktonic and biofilm-embedded forms demonstrating MIC values comparable with those of conventional antifungals and antimicrobials. Similar to other antiseptics like benzalkonium chloride and miramistin, KFU-127 is considerably toxic for eukaryotic cells that limits is application to topical treatment options. On the other hand, KFU-127 reduces the number of viable biofilm-embedded bacteria and C. albicans by 3 orders of magnitude at concentrations 2-4 times lower than those of reference drugs and successfully eradicates S. aureus-C. albicans mixed biofilms. The mechanism of antimicrobial action of KFU-127 is bimodal including both membrane integrity damage and pyridoxal-dependent enzymes targeting. We expect that this bilateral mechanism would result in lower rates of resistance development in both fungal and bacterial pathogens. Taken together, our data suggest KFU-127 as a new promising broad spectrum topical antimicrobial capable of one-shot targeting of bacterial and fungal-bacterial biofilms.
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Affiliation(s)
- Marsel R Garipov
- Kazan Federal University, 18 Kremlevskaya str, 420008 Kazan, Russian Federation
| | - Alina E Sabirova
- Kazan Federal University, 18 Kremlevskaya str, 420008 Kazan, Russian Federation
| | - Roman S Pavelyev
- Kazan Federal University, 18 Kremlevskaya str, 420008 Kazan, Russian Federation
| | - Nikita V Shtyrlin
- Kazan Federal University, 18 Kremlevskaya str, 420008 Kazan, Russian Federation
| | - Svetlana A Lisovskaya
- Kazan Scientific Research Institute of Epidemiology and Microbiology, 67 Bolshaya Krasnaya str, 420015 Kazan, Russian Federation; Kazan State Medical University
| | - Oksana V Bondar
- Kazan Federal University, 18 Kremlevskaya str, 420008 Kazan, Russian Federation
| | - Aleksandr V Laikov
- Kazan Federal University, 18 Kremlevskaya str, 420008 Kazan, Russian Federation
| | - Julia G Romanova
- Kazan Federal University, 18 Kremlevskaya str, 420008 Kazan, Russian Federation
| | - Mikhail I Bogachev
- St Petersburg Electrotechnical University, 5 Professor Popov str., 197376 St. Petersburg, Russian Federation
| | - Airat R Kayumov
- Kazan Federal University, 18 Kremlevskaya str, 420008 Kazan, Russian Federation.
| | - Yurii G Shtyrlin
- Kazan Federal University, 18 Kremlevskaya str, 420008 Kazan, Russian Federation.
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15
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Trizna EY, Yarullina MN, Baidamshina DR, Mironova AV, Akhatova FS, Rozhina EV, Fakhrullin RF, Khabibrakhmanova AM, Kurbangalieva AR, Bogachev MI, Kayumov AR. Bidirectional alterations in antibiotics susceptibility in Staphylococcus aureus-Pseudomonas aeruginosa dual-species biofilm. Sci Rep 2020; 10:14849. [PMID: 32908166 PMCID: PMC7481796 DOI: 10.1038/s41598-020-71834-w] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 08/18/2020] [Indexed: 12/12/2022] Open
Abstract
In mixed infections, the bacterial susceptibility differs significantly compared to monocultures of bacteria, and generally the concentrations of antibiotics required for the treatment increases drastically. For S. aureus and P. aeruginosa dual species biofilms, it has been numerously reported that P. aeruginosa decreases S. aureus susceptibility to a broad range of antibiotics, including beta-lactams, glycopeptides, aminoglycosides, macrolides, while sensitizes to quinolones via secretion of various metabolites. Here we show that S. aureus also modulates the susceptibility of P. aeruginosa to antibiotics in mixed cultures. Thus, S. aureus-P. aeruginosa consortium was characterized by tenfold increase in susceptibility to ciprofloxacin and aminoglycosides compared to monocultures. The same effect could be also achieved by the addition of cell-free culture of S. aureus to P. aeruginosa biofilm. Moreover, similar increase in antibiotics efficacy could be observed following addition of S. aureus suspension to the P. aeruginosa mature biofilm, compared to P. aeruginosa monoculture, and vice versa. These findings open promising perspectives to increase the antimicrobial treatment efficacy of the wounds infected with nosocomial pathogens by the transplantation of the skin residential microflora.
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Affiliation(s)
- Elena Y Trizna
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Republic of Tatarstan, Russian Federation
| | - Maria N Yarullina
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Republic of Tatarstan, Russian Federation
| | - Diana R Baidamshina
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Republic of Tatarstan, Russian Federation
| | - Anna V Mironova
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Republic of Tatarstan, Russian Federation
| | - Farida S Akhatova
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Republic of Tatarstan, Russian Federation
| | - Elvira V Rozhina
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Republic of Tatarstan, Russian Federation
| | - Rawil F Fakhrullin
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Republic of Tatarstan, Russian Federation
| | - Alsu M Khabibrakhmanova
- Biofunctional Chemistry Laboratory, A. Butlerov Institute of Chemistry, Kazan Federal University, Kazan, Republic of Tatarstan, Russian Federation
| | - Almira R Kurbangalieva
- Biofunctional Chemistry Laboratory, A. Butlerov Institute of Chemistry, Kazan Federal University, Kazan, Republic of Tatarstan, Russian Federation
| | - Mikhail I Bogachev
- Biomedical Engineering Research Centre, St. Petersburg Electrotechnical University, St. Petersburg, Russian Federation
| | - Airat R Kayumov
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Republic of Tatarstan, Russian Federation.
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16
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Sharafutdinov IS, Ozhegov GD, Sabirova AE, Novikova VV, Lisovskaya SA, Khabibrakhmanova AM, Kurbangalieva AR, Bogachev MI, Kayumov AR. Increasing Susceptibility of Drug-Resistant Candida albicans to Fluconazole and Terbinafine by 2(5 H)-Furanone Derivative. Molecules 2020; 25:molecules25030642. [PMID: 32024254 PMCID: PMC7036972 DOI: 10.3390/molecules25030642] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 01/28/2020] [Accepted: 02/01/2020] [Indexed: 12/14/2022] Open
Abstract
The frequency of mycoses caused by drug-resistant fungal pathogen Candida albicans has increased drastically over the last two decades. The spread of drug-resistant strains, along with the limitations of currently available antifungals, complicates the management of fungal infections, thereby representing great challenges for clinical healthcare. Among various antimicrobial pharmacophores, 2(5H)-furanone derivatives have demonstrated antimicrobial, antifungal, and antibiofilm activities. In this study, we report the antifungal activity of the 2(5H)-furanone derivative F105, consisting of three pharmacophores, namely chlorinated 2(5H)-furanone, sulfonyl group, and l-menthol moiety. Although exhibiting moderate antifungal activity alone with the minimum inhibitory concentration (MIC) values of 32–256 μg/mL, F105 potentiates the activity of fluconazole and terbinafine with fractional inhibitory concentration index (FICI) values of 0.27–0.50. Thus, 16 μg/mL of F105 reduced the MICs of these antifungals against fluconazole-resistant C. albicans isolates four-fold, achieving similar values as for the intermediately susceptible phenotype. Confocal laser scanning microscopy revealed that the fluorescent 2(5H)-furanone derivative F145 was also able to penetrate through biofilms formed by C. albicans. Indeed, in the presence of F105, even sub-MIC concentrations of both fluconazole and terbinafine led to significant reduction of C. albicans CFUs in the mature biofilm. Thus, F105 appears to be a promising candidate for the development of novel antifungal agents as well as enhancers of current antifungal agents, particularly for the treatment of drug-resistant C. albicans infections.
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Affiliation(s)
- Irshad S. Sharafutdinov
- Laboratory of Molecular Genetics of Microorganisms, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan 420008, Russia; (G.D.O.); (A.E.S.)
- Correspondence: (I.S.S.); (A.R.K.); Tel.: +7-927-402-1105 (I.S.S.); +7-904-665-1908 (A.R.K.)
| | - Georgii D. Ozhegov
- Laboratory of Molecular Genetics of Microorganisms, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan 420008, Russia; (G.D.O.); (A.E.S.)
- Industrial Drug Technology and Biotechnology, Perm State Pharmaceutical Academy, Perm 614990, Russia
| | - Alina E. Sabirova
- Laboratory of Molecular Genetics of Microorganisms, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan 420008, Russia; (G.D.O.); (A.E.S.)
| | | | - Svetlana A. Lisovskaya
- Kazan Scientific Research Institute of Epidemiology and Microbiology, Kazan 420015, Russia;
- Kazan State Medical University, Kazan 420012, Russia
| | - Alsu M. Khabibrakhmanova
- Biofunctional Chemistry Laboratory, Alexander Butlerov Institute of Chemistry, Kazan Federal University, Kazan 420008, Russia; (A.M.K.); (A.R.K.)
| | - Almira R. Kurbangalieva
- Biofunctional Chemistry Laboratory, Alexander Butlerov Institute of Chemistry, Kazan Federal University, Kazan 420008, Russia; (A.M.K.); (A.R.K.)
| | - Mikhail I. Bogachev
- Radio Systems Department & Biomedical Engineering Research Centre, St. Petersburg Electrotechnical University, St. Petersburg 197376, Russia;
| | - Airat R. Kayumov
- Laboratory of Molecular Genetics of Microorganisms, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan 420008, Russia; (G.D.O.); (A.E.S.)
- Correspondence: (I.S.S.); (A.R.K.); Tel.: +7-927-402-1105 (I.S.S.); +7-904-665-1908 (A.R.K.)
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