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Er-Rahmani S, Errabiti B, Matencio A, Trotta F, Latrache H, Koraichi SI, Elabed S. Plant-derived bioactive compounds for the inhibition of biofilm formation: a comprehensive review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:34859-34880. [PMID: 38744766 DOI: 10.1007/s11356-024-33532-2] [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: 05/21/2023] [Accepted: 04/27/2024] [Indexed: 05/16/2024]
Abstract
Biofilm formation is a widespread phenomenon that impacts different fields, including the food industry, agriculture, health care and the environment. Accordingly, there is a serious need for new methods of managing the problem of biofilm formation. Natural products have historically been a rich source of varied compounds with a wide variety of biological functions, including antibiofilm agents. In this review, we critically highlight and discuss the recent progress in understanding the antibiofilm effects of several bioactive compounds isolated from different plants, and in elucidating the underlying mechanisms of action and the factors influencing their adhesion. The literature shows that bioactive compounds have promising antibiofilm potential against both Gram-negative and Gram-positive bacterial and fungal strains, via several mechanisms of action, such as suppressing the formation of the polymer matrix, limiting O2 consumption, inhibiting microbial DNA replication, decreasing hydrophobicity of cell surfaces and blocking the quorum sensing network. This antibiofilm activity is influenced by several environmental factors, such as nutritional cues, pH values, O2 availability and temperature. This review demonstrates that several bioactive compounds could mitigate the problem of biofilm production. However, toxicological assessment and pharmacokinetic investigations of these molecules are strongly required to validate their safety.
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Affiliation(s)
- Sara Er-Rahmani
- Laboratory of Microbial Biotechnology and Bioactive Molecules, Faculty of Sciences and Technologies, Sidi Mohamed Ben Abdellah University of Fez, Imouzzer Road, 30000, Fez, Morocco
- Department of Chemistry, Nanomaterials for Industry and Sustainability Centre (NIS Centre), Università Di Torino, 10125, Turin, Italy
| | - Badr Errabiti
- Laboratory of Microbial Biotechnology and Bioactive Molecules, Faculty of Sciences and Technologies, Sidi Mohamed Ben Abdellah University of Fez, Imouzzer Road, 30000, Fez, Morocco
| | - Adrián Matencio
- Department of Chemistry, Nanomaterials for Industry and Sustainability Centre (NIS Centre), Università Di Torino, 10125, Turin, Italy
| | - Francesco Trotta
- Department of Chemistry, Nanomaterials for Industry and Sustainability Centre (NIS Centre), Università Di Torino, 10125, Turin, Italy
| | - Hassan Latrache
- Laboratory of Bioprocesses and Bio-Interfaces, Faculty of Science and Technology, Sultan Moulay Slimane University, 23000, Beni Mellal, Morocco
| | - Saad Ibnsouda Koraichi
- Laboratory of Microbial Biotechnology and Bioactive Molecules, Faculty of Sciences and Technologies, Sidi Mohamed Ben Abdellah University of Fez, Imouzzer Road, 30000, Fez, Morocco
| | - Soumya Elabed
- Laboratory of Microbial Biotechnology and Bioactive Molecules, Faculty of Sciences and Technologies, Sidi Mohamed Ben Abdellah University of Fez, Imouzzer Road, 30000, Fez, Morocco.
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2
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Imparato M, Maione A, Buonanno A, Gesuele R, Gallucci N, Corsaro MM, Paduano L, Casillo A, Guida M, Galdiero E, de Alteriis E. Extracellular Vesicles from a Biofilm of a Clinical Isolate of Candida albicans Negatively Impact on Klebsiella pneumoniae Adherence and Biofilm Formation. Antibiotics (Basel) 2024; 13:80. [PMID: 38247639 PMCID: PMC10812662 DOI: 10.3390/antibiotics13010080] [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: 11/30/2023] [Revised: 01/09/2024] [Accepted: 01/13/2024] [Indexed: 01/23/2024] Open
Abstract
The opportunistic human fungal pathogen Candida albicans produces and releases into the surrounding medium extracellular vesicles (EVs), which are involved in some processes as communication between fungal cells and host-pathogen interactions during infection. Here, we have conducted the isolation of EVs produced by a clinical isolate of C. albicans during biofilm formation and proved their effect towards the ability of the Gram-negative bacterial pathogen Klebsiella pneumoniae to adhere to HaCaT cells and form a biofilm in vitro. The results represent the first evidence of an antagonistic action of fungal EVs against bacteria.
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Affiliation(s)
- Marianna Imparato
- Department of Biology, University of Naples ‘Federico II’, Via Cinthia, 80126 Naples, Italy; (M.I.); (A.M.); (A.B.); (R.G.); (M.G.); (E.d.A.)
| | - Angela Maione
- Department of Biology, University of Naples ‘Federico II’, Via Cinthia, 80126 Naples, Italy; (M.I.); (A.M.); (A.B.); (R.G.); (M.G.); (E.d.A.)
| | - Annalisa Buonanno
- Department of Biology, University of Naples ‘Federico II’, Via Cinthia, 80126 Naples, Italy; (M.I.); (A.M.); (A.B.); (R.G.); (M.G.); (E.d.A.)
| | - Renato Gesuele
- Department of Biology, University of Naples ‘Federico II’, Via Cinthia, 80126 Naples, Italy; (M.I.); (A.M.); (A.B.); (R.G.); (M.G.); (E.d.A.)
| | - Noemi Gallucci
- Department of Chemical Sciences, University of Naples “Federico II”, Via Cintia 4, 80126 Naples, Italy; (N.G.); (M.M.C.); (L.P.); (A.C.)
| | - Maria Michela Corsaro
- Department of Chemical Sciences, University of Naples “Federico II”, Via Cintia 4, 80126 Naples, Italy; (N.G.); (M.M.C.); (L.P.); (A.C.)
| | - Luigi Paduano
- Department of Chemical Sciences, University of Naples “Federico II”, Via Cintia 4, 80126 Naples, Italy; (N.G.); (M.M.C.); (L.P.); (A.C.)
| | - Angela Casillo
- Department of Chemical Sciences, University of Naples “Federico II”, Via Cintia 4, 80126 Naples, Italy; (N.G.); (M.M.C.); (L.P.); (A.C.)
| | - Marco Guida
- Department of Biology, University of Naples ‘Federico II’, Via Cinthia, 80126 Naples, Italy; (M.I.); (A.M.); (A.B.); (R.G.); (M.G.); (E.d.A.)
- National Biodiversity Future Center (NBFC), 90133 Palermo, Italy
- Center for Studies on Bioinspired Agro-Environmental Technology (BAT Center), 80055 Portici, Italy
| | - Emilia Galdiero
- Department of Biology, University of Naples ‘Federico II’, Via Cinthia, 80126 Naples, Italy; (M.I.); (A.M.); (A.B.); (R.G.); (M.G.); (E.d.A.)
- Center for Studies on Bioinspired Agro-Environmental Technology (BAT Center), 80055 Portici, Italy
| | - Elisabetta de Alteriis
- Department of Biology, University of Naples ‘Federico II’, Via Cinthia, 80126 Naples, Italy; (M.I.); (A.M.); (A.B.); (R.G.); (M.G.); (E.d.A.)
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3
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Sangavi R, Muthumanickam S, Malligarjunan N, Jothi R, Boomi P, Arivudainambi S, Raman M, Joshi CG, Pandian SK, Gowrishankar S. In silico analysis unravels the promising anticariogenic efficacy of fatty acids against dental caries causing Streptococcus mutans. J Biomol Struct Dyn 2023:1-16. [PMID: 37993988 DOI: 10.1080/07391102.2023.2283155] [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: 04/02/2023] [Accepted: 11/08/2023] [Indexed: 11/24/2023]
Abstract
Globally, dental caries is a prevalent oral disease caused by cariogenic bacteria, primarily Streptococcus mutans. It establishes caries either through sucrose-dependent (via glycosyltransferases) or through sucrose-independent (via surface adhesins Antigen I/II) mechanism. Sortase A (srtA) attaches virulence-associated adhesins to host tissues. Because of their importance in the formation of caries, targeting these proteins is decisive in the development of new anticariogenic drugs. High-throughput virtual screening with LIPID MAPS -a fatty acid database was performed. The selected protein-ligand complexes were subjected to molecular dynamics simulation (MDs). The Binding Free Energy of complexes was predicted using MM/PBSA. Further, the drug-likeness and pharmacokinetic properties of ligands were also analyzed. Out of 46,200 FAs scrutinized virtually against the three protein targets (viz., GtfC, Ag I/II and srtA), top 5 FAs for each protein were identified as the best hit based on interaction energies viz., hydrogen bond numbers and hydrophobic interaction. Further, two common FAs (LMFA01050418 and LMFA01040045) that showed high binding affinity against Ag I/II and srtA were selected for MDs analysis. A 100ns MDs unveiled a stable conformation. Results of Rg signified that FAs does not induce significant structural & conformational changes. SASA indicated that the complexes maintain higher thermodynamic stability during MDs. The predicted binding free energy (MM/PBSA) of complexes elucidated their stable binding interaction. ADME analysis suggested the FAs are biologically feasible as therapeutic candidates. Overall, the presented in silico data is the first of its kind in delineating FAs as promising anticaries agents of future.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Ravichellam Sangavi
- Department of Biotechnology, Science Campus, Alagappa University, Karaikudi, India
| | - Sankar Muthumanickam
- Department of Bioinformatics, Science Campus, Alagappa University, Karaikudi, India
| | | | - Ravi Jothi
- Department of Biotechnology, Science Campus, Alagappa University, Karaikudi, India
| | - Pandi Boomi
- Department of Bioinformatics, Science Campus, Alagappa University, Karaikudi, India
| | - Seenichamy Arivudainambi
- Department of Science & Technology, Gujarat Biotechnology Research Centre (GBRC), Government of Gujarat, Gandhinagar, India
| | - Muthusamy Raman
- Department of Microbiology, Centre for Infectious Diseases, Saveetha Dental University, Chennai, India
| | - Chaitanya G Joshi
- Department of Science & Technology, Gujarat Biotechnology Research Centre (GBRC), Government of Gujarat, Gandhinagar, India
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Ray S, Jin JO, Choi I, Kim M. Cell-Free Supernatant of Bacillus thuringiensis Displays Anti-Biofilm Activity Against Staphylococcus aureus. Appl Biochem Biotechnol 2023; 195:5379-5393. [PMID: 35593953 DOI: 10.1007/s12010-022-03971-z] [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: 01/03/2022] [Accepted: 05/10/2022] [Indexed: 11/02/2022]
Abstract
Staphylococcus aureus is an important bacterial pathogen responsible for biofilm formation in medical devices. Due to the increasing antibiotic resistance of S. aureus, it is necessary to search for new anti-biofilm agents. In this study, the cell-free supernatant of Bacillus thuringiensis inhibited biofilm formation up to 93% and dispersed biofilms up to 83% without affecting the growth of S. aureus. The ethyl acetate extract of B. thuringiensis cell-free supernatant exhibited a dose-dependent anti-biofilm activity against S. aureus with the biofilm inhibition concentration ranging from 8 to 64 µg/mL. Scanning electron microscopy revealed that the cell-free supernatant extract of B. thuringiensis resulted in a significant reduction in S. aureus biofilms. The ethyl acetate extract of cell-free supernatant of B. thuringiensis was found to contain various compounds with structural similarity to known anti-biofilm compounds. In particular, squalene, cinnamic acid derivatives, and eicosapentaene seem to act synergistically against S. aureus biofilms. Hence, B. thuringiensis cell-free supernatant proved to be effective against S. aureus biofilms. The results clearly show the potential of natural molecules produced by B. thuringiensis as alternative therapies with anti-biofilm activity instead of bactericidal properties.
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Affiliation(s)
- Subhasree Ray
- Research Institute of Cell Culture, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, 38541, Republic of Korea
- Department of Life Science, School of Basic Science and Research, Sharda University, Greater Noida, Uttar Pradesh, India
| | - Jun-O Jin
- Research Institute of Cell Culture, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, 38541, Republic of Korea
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, 38541, Republic of Korea
| | - Inho Choi
- Research Institute of Cell Culture, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, 38541, Republic of Korea
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, 38541, Republic of Korea
| | - Myunghee Kim
- Research Institute of Cell Culture, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, 38541, Republic of Korea.
- Department of Food Science and Technology, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, 38541, Republic of Korea.
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Pompilio A, Scocchi M, Mangoni ML, Shirooie S, Serio A, Ferreira Garcia da Costa Y, Alves MS, Şeker Karatoprak G, Süntar I, Khan H, Di Bonaventura G. Bioactive compounds: a goldmine for defining new strategies against pathogenic bacterial biofilms? Crit Rev Microbiol 2023; 49:117-149. [PMID: 35313120 DOI: 10.1080/1040841x.2022.2038082] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Most human infectious diseases are caused by microorganisms growing as biofilms. These three-dimensional self-organized communities are embedded in a dense matrix allowing microorganisms to persistently inhabit abiotic and biotic surfaces due to increased resistance to both antibiotics and effectors of the immune system. Consequently, there is an urgent need for novel strategies to control biofilm-associated infections. Natural products offer a vast array of chemical structures and possess a wide variety of biological properties; therefore, they have been and continue to be exploited in the search for potential biofilm inhibitors with a specific or multi-locus mechanism of action. This review provides an updated discussion of the major bioactive compounds isolated from several natural sources - such as plants, lichens, algae, microorganisms, animals, and humans - with the potential to inhibit biofilm formation and/or to disperse established biofilms by bacterial pathogens. Despite the very large number of bioactive products, their exact mechanism of action often remains to be clarified and, in some cases, the identity of the active molecule is still unknown. This knowledge gap should be filled thus allowing development of these products not only as novel drugs to combat bacterial biofilms, but also as antibiotic adjuvants to restore the therapeutic efficacy of current antibiotics.
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Affiliation(s)
- Arianna Pompilio
- Department of Medical, Oral and Biotechnological Sciences, and Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Marco Scocchi
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Maria Luisa Mangoni
- Department of Biochemical Sciences, Sapienza University of Rome, Laboratory affiliated to Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
| | - Samira Shirooie
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Annalisa Serio
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Ygor Ferreira Garcia da Costa
- Laboratory of Cellular and Molecular Bioactivity, Pharmaceutical Research Center, Faculty of Pharmacy, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | - Maria Silvana Alves
- Laboratory of Cellular and Molecular Bioactivity, Pharmaceutical Research Center, Faculty of Pharmacy, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | - Gökçe Şeker Karatoprak
- Department of Pharmacognosy, Faculty of Pharmacy, Erciyes University, Talas, Kayseri, Turkey
| | - Ipek Süntar
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, Etiler, Ankara, Turkey
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University, Mardan, Pakistan
| | - Giovanni Di Bonaventura
- Department of Medical, Oral and Biotechnological Sciences, and Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
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Targeting the Holy Triangle of Quorum Sensing, Biofilm Formation, and Antibiotic Resistance in Pathogenic Bacteria. Microorganisms 2022; 10:microorganisms10061239. [PMID: 35744757 PMCID: PMC9228545 DOI: 10.3390/microorganisms10061239] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 06/12/2022] [Accepted: 06/14/2022] [Indexed: 12/12/2022] Open
Abstract
Chronic and recurrent bacterial infections are frequently associated with the formation of biofilms on biotic or abiotic materials that are composed of mono- or multi-species cultures of bacteria/fungi embedded in an extracellular matrix produced by the microorganisms. Biofilm formation is, among others, regulated by quorum sensing (QS) which is an interbacterial communication system usually composed of two-component systems (TCSs) of secreted autoinducer compounds that activate signal transduction pathways through interaction with their respective receptors. Embedded in the biofilms, the bacteria are protected from environmental stress stimuli, and they often show reduced responses to antibiotics, making it difficult to eradicate the bacterial infection. Besides reduced penetration of antibiotics through the intricate structure of the biofilms, the sessile biofilm-embedded bacteria show reduced metabolic activity making them intrinsically less sensitive to antibiotics. Moreover, they frequently express elevated levels of efflux pumps that extrude antibiotics, thereby reducing their intracellular levels. Some efflux pumps are involved in the secretion of QS compounds and biofilm-related materials, besides being important for removing toxic substances from the bacteria. Some efflux pump inhibitors (EPIs) have been shown to both prevent biofilm formation and sensitize the bacteria to antibiotics, suggesting a relationship between these processes. Additionally, QS inhibitors or quenchers may affect antibiotic susceptibility. Thus, targeting elements that regulate QS and biofilm formation might be a promising approach to combat antibiotic-resistant biofilm-related bacterial infections.
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7
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Rani S, Verma S, Singh H, Ram C. Antibacterial activity and mechanism of essential oils in combination with medium-chain fatty acids against predominant bovine mastitis pathogens. Lett Appl Microbiol 2022; 74:959-969. [PMID: 35178733 DOI: 10.1111/lam.13675] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/11/2022] [Accepted: 02/03/2022] [Indexed: 10/19/2022]
Abstract
Bovine mastitis has become a significant economic importance for dairy industry. Concerns regarding poor milk quality, and emergence of bacterial resistance has necessitated to develop alternative therapeutic approach to antibiotics for treatment of mastitis. Saturated medium-chain fatty acids (MCFAs) and essential oils (EOs) are known natural antimicrobials, but their combined effect has not been investigated extensively. The objective of the present investigation was to examine the bactericidal effect of various combined treatments of eight EOs and three saturated MCFAs to inactivate predominant mastitis pathogens, including Staphylococcus aureus ATCC 29213; Escherichia coli ATCC 25922; Klebsiella pneumoniae ATCC 27736; and Streptococcus agalactiae ATCC 27956. The minimum inhibition concentration (MIC) values confirmed that all the tested pathogens were variably susceptible to both EOs and saturated MCFAs. Among essential oils, carvacrol (CAR), trans-cinnamaldehyde (TC), and thymol (TM) showed highest inhibitory activity at concentration 0.38-1.32 mg/mL. Carvacrol exhibited effective additive antibacterial activity in combined treatment with octanoic acid (OA) in terms of its fractional inhibitory index (0.63-0.88) and time-kill effect in reducing about 6 log CFU/mL bacterial cells in less than 5 min. Effort was also made to elucidate mechanism of antibacterial action of CAR and OA against selected mastitis pathogens by observing changes in cell microstructure, permeability and integrity of cell membrane and their membrane potential. After adding CAR and OA at MIC level, there were obvious changes in cell morphology, leakage of small electrolytes, and macromolecules at the initial few hours of treatment i.e. within 1-2 h were observed. Our results indicated that CAR and OA could be evaluated as alternatives or adjuncts to antibiotics as intramammary infusion or topical application to treat bovine mastitis, significantly improving the microbiological safety of milk.
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Affiliation(s)
- Sapna Rani
- Synbiotic Functional Food and Bioremediation Research Laboratory, Dairy Microbiology Division, ICAR- National Dairy Research Institute (Deemed University), Karnal, 132001, Haryana, India
| | - Sunita Verma
- Synbiotic Functional Food and Bioremediation Research Laboratory, Dairy Microbiology Division, ICAR- National Dairy Research Institute (Deemed University), Karnal, 132001, Haryana, India
| | - Hemlata Singh
- Synbiotic Functional Food and Bioremediation Research Laboratory, Dairy Microbiology Division, ICAR- National Dairy Research Institute (Deemed University), Karnal, 132001, Haryana, India
| | - Chand Ram
- Synbiotic Functional Food and Bioremediation Research Laboratory, Dairy Microbiology Division, ICAR- National Dairy Research Institute (Deemed University), Karnal, 132001, Haryana, India
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8
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Rani S, Singh H, Ram C. Efficacy and mechanism of carvacrol with octanoic acid against mastitis causing multi-drug-resistant pathogens. Braz J Microbiol 2021; 53:385-399. [PMID: 34784023 DOI: 10.1007/s42770-021-00639-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 10/21/2021] [Indexed: 11/24/2022] Open
Abstract
In the present investigation, we determined the in vitro antimicrobial activity of eight essential oils (EOs) and three medium-chain fatty acids (MCFAs) alone and in combination against Staphylococcus aureus ATCC 700698, Klebsiella pneumoniae ATCC 700603, and E. coli FcW5. The interactions between EOs and MCFAs were determined by fractional inhibitory concentration indices. Moreover, mode of action of selected bioactive components was studied by changes in bacterial surface charge, morphology, and membrane integrity assays. Among EOs, carvacrol (CAR), trans-cinnamaldehyde (TC), and thymol (TM) showed strong antimicrobial activity. In combination study, CAR+OA (octanoic acid), CAR+DA (decanoic acid), and TM+OA were observed as the most significant (P≤0.05) which were also confirmed through time-kill plots. Based on these results, CAR+OA were found to be most efficacious in terms of killing time (P≤0.05). Changes in the surface charge, morphology, and membrane integrity upon the combined treatment of CAR+OA were also observed, which ultimately leads to cell death. Results suggest that CAR+OA when used in combination offer a significant (P≤0.05) additive antimicrobial activity against the selected pathogenic bacteria. Therefore, these natural bioactive molecules could be interesting alternatives to conventional therapy for the control of mastitis caused by multi-drug-resistant pathogens in bovine animals to ensure the milk safety.
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Affiliation(s)
- Sapna Rani
- Synbiotic Functional Food and Bioremediation Research Laboratory, Dairy Microbiology Division, ICAR-National Dairy Research Institute (Deemed University), Karnal, Haryana, 132001, India
| | - Hemlata Singh
- Synbiotic Functional Food and Bioremediation Research Laboratory, Dairy Microbiology Division, ICAR-National Dairy Research Institute (Deemed University), Karnal, Haryana, 132001, India
| | - Chand Ram
- Synbiotic Functional Food and Bioremediation Research Laboratory, Dairy Microbiology Division, ICAR-National Dairy Research Institute (Deemed University), Karnal, Haryana, 132001, India.
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9
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Galdiero E, Ricciardelli A, D'Angelo C, de Alteriis E, Maione A, Albarano L, Casillo A, Corsaro MM, Tutino ML, Parrilli E. Pentadecanoic acid against Candida albicans-Klebsiella pneumoniae biofilm: towards the development of an anti-biofilm coating to prevent polymicrobial infections. Res Microbiol 2021; 172:103880. [PMID: 34563667 DOI: 10.1016/j.resmic.2021.103880] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 09/07/2021] [Accepted: 09/09/2021] [Indexed: 12/15/2022]
Abstract
The ability to form biofilms is a common feature of microorganisms, which can colonize a variety of surfaces, such as host tissues and medical devices, resulting in infections highly resistant to conventional drugs. This aspect is particularly critical in polymicrobial biofilms involving both fungi and bacteria, therefore, to eradicate such severe infections, new and effective anti-biofilm strategies are needed. The efficacy of pentadecanal and pentadecanoic acid as anti-biofilm agents has been recently reported against different bacterial strains. Their chemical similarity with diffusible signal factors (DSFs), plus the already known ability of fatty acids to act as anti-biofilm agents, suggested to explore their use against Candida albicans and Klebsiella pneumoniae mixed biofilm. In this work, we demonstrated the ability of both molecules to prevent the formation and destabilize the structure of the dual-species biofilm. Moreover, the pentadecanoic acid anti-biofilm coating, previously developed through the adsorption of the fatty acid on polydimethylsiloxane (PDMS), was proved to prevent the polymicrobial biofilm formation in dynamic conditions by confocal laser scanning microscopy analysis. Finally, the evaluation of the expression levels of some biofilm-related genes of C. albicans and K. pneumoniae treated with pentadecanoic acid provided some insights into the molecular mechanisms underpinning its anti-biofilm effect.
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Affiliation(s)
- E Galdiero
- Department of Biology, University of Naples Federico II, Complesso Universitario Monte Santangelo, Via Cinthia 21, 80126, Naples, Italy
| | - A Ricciardelli
- Department of Chemical Sciences, University of Naples Federico II, 80125, Naples, Italy
| | - C D'Angelo
- Department of Chemical Sciences, University of Naples Federico II, 80125, Naples, Italy
| | - E de Alteriis
- Department of Biology, University of Naples Federico II, Complesso Universitario Monte Santangelo, Via Cinthia 21, 80126, Naples, Italy
| | - A Maione
- Department of Biology, University of Naples Federico II, Complesso Universitario Monte Santangelo, Via Cinthia 21, 80126, Naples, Italy
| | - L Albarano
- Department of Biology, University of Naples Federico II, Complesso Universitario Monte Santangelo, Via Cinthia 21, 80126, Naples, Italy; Department of Chemical Sciences, University of Naples Federico II, 80125, Naples, Italy; Department of Marine Biothecnology, Stazione Zoologica Anton Dohrn Villa Comunale, 80121, Naples, Italy
| | - A Casillo
- Department of Chemical Sciences, University of Naples Federico II, 80125, Naples, Italy
| | - M M Corsaro
- Department of Chemical Sciences, University of Naples Federico II, 80125, Naples, Italy
| | - M L Tutino
- Department of Chemical Sciences, University of Naples Federico II, 80125, Naples, Italy
| | - E Parrilli
- Department of Chemical Sciences, University of Naples Federico II, 80125, Naples, Italy.
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10
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Lazar V, Holban AM, Curutiu C, Chifiriuc MC. Modulation of Quorum Sensing and Biofilms in Less Investigated Gram-Negative ESKAPE Pathogens. Front Microbiol 2021; 12:676510. [PMID: 34394026 PMCID: PMC8359898 DOI: 10.3389/fmicb.2021.676510] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 06/30/2021] [Indexed: 01/20/2023] Open
Abstract
Pathogenic bacteria have the ability to sense their versatile environment and adapt by behavioral changes both to the external reservoirs and the infected host, which, in response to microbial colonization, mobilizes equally sophisticated anti-infectious strategies. One of the most important adaptive processes is the ability of pathogenic bacteria to turn from the free, floating, or planktonic state to the adherent one and to develop biofilms on alive and inert substrata; this social lifestyle, based on very complex communication networks, namely, the quorum sensing (QS) and response system, confers them an increased phenotypic or behavioral resistance to different stress factors, including host defense mechanisms and antibiotics. As a consequence, biofilm infections can be difficult to diagnose and treat, requiring complex multidrug therapeutic regimens, which often fail to resolve the infection. One of the most promising avenues for discovering novel and efficient antibiofilm strategies is targeting individual cells and their QS mechanisms. A huge amount of data related to the inhibition of QS and biofilm formation in pathogenic bacteria have been obtained using the well-established gram-positive Staphylococcus aureus and gram-negative Pseudomonas aeruginosa models. The purpose of this paper was to revise the progress on the development of antibiofilm and anti-QS strategies in the less investigated gram-negative ESKAPE pathogens Klebsiella pneumoniae, Acinetobacter baumannii, and Enterobacter sp. and identify promising leads for the therapeutic management of these clinically significant and highly resistant opportunistic pathogens.
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Affiliation(s)
- Veronica Lazar
- Department of Microbiology and Immunology, Faculty of Biology, University of Bucharest, Bucharest, Romania
- The Research Institute of the University of Bucharest, Bucharest, Romania
| | - Alina Maria Holban
- Department of Microbiology and Immunology, Faculty of Biology, University of Bucharest, Bucharest, Romania
- The Research Institute of the University of Bucharest, Bucharest, Romania
| | - Carmen Curutiu
- Department of Microbiology and Immunology, Faculty of Biology, University of Bucharest, Bucharest, Romania
- The Research Institute of the University of Bucharest, Bucharest, Romania
| | - Mariana Carmen Chifiriuc
- Department of Microbiology and Immunology, Faculty of Biology, University of Bucharest, Bucharest, Romania
- The Research Institute of the University of Bucharest, Bucharest, Romania
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Kumar P, Lee JH, Beyenal H, Lee J. Fatty Acids as Antibiofilm and Antivirulence Agents. Trends Microbiol 2020; 28:753-768. [DOI: 10.1016/j.tim.2020.03.014] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 03/09/2020] [Accepted: 03/25/2020] [Indexed: 12/21/2022]
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