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Wang X, Zhou WT, Dong HH, Li CY, Jiang YY, Xie P, Xu ZY, Xie SH, Yang SX, Huang L, Chen H, Wang LY, Wei X, Huang YQ. Isobavachalcone: A redox antifungal agent impairs the mitochondria protein of Cryptococcus neoformans. Int J Antimicrob Agents 2024; 64:107253. [PMID: 38925229 DOI: 10.1016/j.ijantimicag.2024.107253] [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: 07/27/2023] [Revised: 04/30/2024] [Accepted: 06/13/2024] [Indexed: 06/28/2024]
Abstract
Isobavachalcone (IBC) is a natural small molecule with various biological activities; however, its inhibitory effects on Cryptococcus neoformans remain unclear. In our study, IBC showed a good antifungal effect. Through in vitro experiments, its minimum inhibitory concentration was 0.5-1 µg/mL. It exhibited the same antifungal effect as Amphotericin B in brain and lung infections in in vivo experiments. IBC also showed a synergistic antifungal effect with emodin with lower toxicity, and C. neoformans did not develop drug resistance to IBC. In the mechanistic study, significantly damaged mitochondria of C. neoformans, a significant reduction in mitochondrial membrane potential and adenosine triphosphate production, and an increase in hydrogen peroxide (H2O2) caused by IBC were observed using transmission electron microscopy. Through drug affinity-responsive target stability combined with phenotype detection, riboflavin synthases of aconitase and succinate dehydrogenase were screened. Molecular docking, quantitative polymerase chain reaction experiments, target inhibitor and agonist intervention, molecular interaction measurements, and minimum inhibitory concentration detection of the constructed expression strains revealed that IBC targeted the activity of these two enzymes, interfered by the tricarboxylic acid cycle, inhibited the production of adenosine triphosphate, blocked electron transport, reduced mitochondrial membrane potential, and induced antioxidation imbalance and reactive oxygen species accumulation, thus producing an antifungal effect. Therefore, IBC is a promising lead drug and redox antifungal agent for C. neoformans.
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Affiliation(s)
- Xue Wang
- Guangxi Technology Innovation Cooperation Base of Prevention and Control Pathogenic Microbes with Drug Resistance, Youjiang Medical University for Nationalities, Baise, China; Education Department of Guangxi Zhuang Autonomous Region, Key Laboratory of the Prevention and Treatment of Drug Resistant Microbial Infecting, Youjiang Medical University for Nationalities, Baise, China; Graduate School of Youjiang Medical University for Nationalities, Baise, China
| | - Wen-Ting Zhou
- Guangxi Technology Innovation Cooperation Base of Prevention and Control Pathogenic Microbes with Drug Resistance, Youjiang Medical University for Nationalities, Baise, China; Education Department of Guangxi Zhuang Autonomous Region, Key Laboratory of the Prevention and Treatment of Drug Resistant Microbial Infecting, Youjiang Medical University for Nationalities, Baise, China; Graduate School of Youjiang Medical University for Nationalities, Baise, China
| | - Hui-Hua Dong
- Guangxi Technology Innovation Cooperation Base of Prevention and Control Pathogenic Microbes with Drug Resistance, Youjiang Medical University for Nationalities, Baise, China; Education Department of Guangxi Zhuang Autonomous Region, Key Laboratory of the Prevention and Treatment of Drug Resistant Microbial Infecting, Youjiang Medical University for Nationalities, Baise, China; Graduate School of Youjiang Medical University for Nationalities, Baise, China
| | - Chen-Yan Li
- Guangxi Technology Innovation Cooperation Base of Prevention and Control Pathogenic Microbes with Drug Resistance, Youjiang Medical University for Nationalities, Baise, China; Education Department of Guangxi Zhuang Autonomous Region, Key Laboratory of the Prevention and Treatment of Drug Resistant Microbial Infecting, Youjiang Medical University for Nationalities, Baise, China; Graduate School of Youjiang Medical University for Nationalities, Baise, China
| | - Yu-Ying Jiang
- Guangxi Technology Innovation Cooperation Base of Prevention and Control Pathogenic Microbes with Drug Resistance, Youjiang Medical University for Nationalities, Baise, China; Education Department of Guangxi Zhuang Autonomous Region, Key Laboratory of the Prevention and Treatment of Drug Resistant Microbial Infecting, Youjiang Medical University for Nationalities, Baise, China; Graduate School of Youjiang Medical University for Nationalities, Baise, China
| | - Ping Xie
- Guangxi Technology Innovation Cooperation Base of Prevention and Control Pathogenic Microbes with Drug Resistance, Youjiang Medical University for Nationalities, Baise, China; Education Department of Guangxi Zhuang Autonomous Region, Key Laboratory of the Prevention and Treatment of Drug Resistant Microbial Infecting, Youjiang Medical University for Nationalities, Baise, China; Graduate School of Youjiang Medical University for Nationalities, Baise, China
| | - Zhen-Yi Xu
- Guangxi Technology Innovation Cooperation Base of Prevention and Control Pathogenic Microbes with Drug Resistance, Youjiang Medical University for Nationalities, Baise, China; Education Department of Guangxi Zhuang Autonomous Region, Key Laboratory of the Prevention and Treatment of Drug Resistant Microbial Infecting, Youjiang Medical University for Nationalities, Baise, China; Graduate School of Youjiang Medical University for Nationalities, Baise, China
| | - Shuo-Hua Xie
- Guangxi Technology Innovation Cooperation Base of Prevention and Control Pathogenic Microbes with Drug Resistance, Youjiang Medical University for Nationalities, Baise, China; Education Department of Guangxi Zhuang Autonomous Region, Key Laboratory of the Prevention and Treatment of Drug Resistant Microbial Infecting, Youjiang Medical University for Nationalities, Baise, China; Graduate School of Youjiang Medical University for Nationalities, Baise, China
| | - Shi-Xian Yang
- Guangxi Technology Innovation Cooperation Base of Prevention and Control Pathogenic Microbes with Drug Resistance, Youjiang Medical University for Nationalities, Baise, China; Education Department of Guangxi Zhuang Autonomous Region, Key Laboratory of the Prevention and Treatment of Drug Resistant Microbial Infecting, Youjiang Medical University for Nationalities, Baise, China
| | - Liang Huang
- Guangxi Technology Innovation Cooperation Base of Prevention and Control Pathogenic Microbes with Drug Resistance, Youjiang Medical University for Nationalities, Baise, China; Education Department of Guangxi Zhuang Autonomous Region, Key Laboratory of the Prevention and Treatment of Drug Resistant Microbial Infecting, Youjiang Medical University for Nationalities, Baise, China
| | - Hao Chen
- Department of Pathology, Wannan Medical College, Wuhu, China
| | - Lu-Yao Wang
- Guangxi Technology Innovation Cooperation Base of Prevention and Control Pathogenic Microbes with Drug Resistance, Youjiang Medical University for Nationalities, Baise, China; Education Department of Guangxi Zhuang Autonomous Region, Key Laboratory of the Prevention and Treatment of Drug Resistant Microbial Infecting, Youjiang Medical University for Nationalities, Baise, China.
| | - Xian Wei
- Guangxi Technology Innovation Cooperation Base of Prevention and Control Pathogenic Microbes with Drug Resistance, Youjiang Medical University for Nationalities, Baise, China; Education Department of Guangxi Zhuang Autonomous Region, Key Laboratory of the Prevention and Treatment of Drug Resistant Microbial Infecting, Youjiang Medical University for Nationalities, Baise, China.
| | - Yan-Qiang Huang
- Guangxi Technology Innovation Cooperation Base of Prevention and Control Pathogenic Microbes with Drug Resistance, Youjiang Medical University for Nationalities, Baise, China; Education Department of Guangxi Zhuang Autonomous Region, Key Laboratory of the Prevention and Treatment of Drug Resistant Microbial Infecting, Youjiang Medical University for Nationalities, Baise, China.
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2
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Wang D, Zeng N, Li C, Li Z, Zhang N, Li B. Fungal biofilm formation and its regulatory mechanism. Heliyon 2024; 10:e32766. [PMID: 38988529 PMCID: PMC11233959 DOI: 10.1016/j.heliyon.2024.e32766] [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: 09/17/2023] [Revised: 06/07/2024] [Accepted: 06/08/2024] [Indexed: 07/12/2024] Open
Abstract
Fungal biofilm is a microbial community composed of fungal cells and extracellular polymeric substances (EPS). In recent years, fungal biofilms have played an increasingly important role in many fields. However, there are few studies on fungal biofilms and their related applications and development are still far from enough. Therefore, this review summarizes the composition and function of EPS in fungal biofilms, and improves and refines the formation process of fungal biofilms according to the latest viewpoints. Moreover, based on the study of Saccharomyces cerevisiae and Candida albicans, this review summarizes the gene regulation network of fungal biofilm synthesis, which is crucial for systematically understanding the molecular mechanism of fungal biofilm formation. It is of great significance to further develop effective methods at the molecular level to control harmful biofilms or enhance and regulate the formation of beneficial biofilms. Finally, the quorum sensing factors and mixed biofilms formed by fungi in the current research of fungal biofilms are summarized. These results will help to deepen the understanding of the formation process and internal regulation mechanism of fungal biofilm, provide reference for the study of EPS composition and structure, formation, regulation, group behavior and mixed biofilm formation of other fungal biofilms, and provide strategies and theoretical basis for the control, development and utilization of fungal biofilms.
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Affiliation(s)
- Dandan Wang
- College of Land and Environment, Shenyang Agricultural University, Shenyang, 110866, PR China
| | - Nan Zeng
- College of Land and Environment, Shenyang Agricultural University, Shenyang, 110866, PR China
| | - Chunji Li
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, PR China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Guangzhou, 510225, PR China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, PR China
| | - Zijing Li
- College of Food Science, Shenyang Agricultural University, Shenyang, 110866, PR China
| | - Ning Zhang
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, 110866, PR China
| | - Bingxue Li
- College of Land and Environment, Shenyang Agricultural University, Shenyang, 110866, PR China
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3
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Sijmons D, Collett S, Soliman C, Guy AJ, Scott AM, Durrant LG, Elbourne A, Walduck AK, Ramsland PA. Probing the expression and adhesion of glycans involved in Helicobacter pylori infection. Sci Rep 2024; 14:8587. [PMID: 38615147 PMCID: PMC11016089 DOI: 10.1038/s41598-024-59234-w] [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: 12/19/2023] [Accepted: 04/08/2024] [Indexed: 04/15/2024] Open
Abstract
Helicobacter pylori infects approximately half the human population and has an unusual infective niche of the human stomach. Helicobacter pylori is a major cause of gastritis and has been classified as a group 1 carcinogen by the WHO. Treatment involves triple or quadruple antibiotic therapy, but antibiotic resistance is becoming increasingly prevalent. Helicobacter pylori expresses certain blood group related antigens (Lewis system) as a part of its lipopolysaccharide (LPS), which is thought to assist in immune evasion. Additionally, H. pylori LPS participates in adhesion to host cells alongside several adhesion proteins. This study profiled the carbohydrates of H. pylori reference strains (SS1 and 26695) using monoclonal antibodies (mAbs) and lectins, identifying interactions between two carbohydrate-targeting mAbs and multiple lectins. Atomic force microscopy (AFM) scans were used to probe lectin and antibody interactions with the bacterial surfaces. The selected mAb and lectins displayed an increased adhesive force over the surface of the curved H. pylori rods. Furthermore, this study demonstrates the ability of anti-carbohydrate antibodies to reduce the adhesion of H. pylori 26695 to human gastric adenocarcinoma cells via AFM. Targeting bacterial carbohydrates to disrupt crucial adhesion and immune evasion mechanisms represents a promising strategy for combating H. pylori infection.
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Affiliation(s)
- Daniel Sijmons
- School of Science, RMIT University, Melbourne, VIC, 3000, Australia
| | - Simon Collett
- School of Science, RMIT University, Melbourne, VIC, 3000, Australia
- Department of Paediatrics, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Caroline Soliman
- School of Science, RMIT University, Melbourne, VIC, 3000, Australia
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Melbourne, VIC, 3000, Australia
| | - Andrew J Guy
- School of Science, RMIT University, Melbourne, VIC, 3000, Australia
- ZiP Diagnostics, Collingwood, VIC, 3066, Australia
| | - Andrew M Scott
- Olivia Newton-John Cancer Research Institute and School of Cancer Medicine, La Trobe University, Melbourne, VIC, Australia
- Department of Molecular Imaging and Therapy, Austin Health and Faculty of Medicine, The University of Melbourne, Melbourne, VIC, Australia
| | - Lindy G Durrant
- Scancell Limited, University of Nottingham Biodiscovery Institute, Nottingham, UK
- Division of Cancer and Stem Cells, School of Medicine, University of Nottingham Biodiscovery Institute, Nottingham, UK
| | - Aaron Elbourne
- School of Science, RMIT University, Melbourne, VIC, 3000, Australia
| | - Anna K Walduck
- School of Science, RMIT University, Melbourne, VIC, 3000, Australia.
- Rural Health Research Institute, Charles Sturt University, Orange, NSW, 2800, Australia.
| | - Paul A Ramsland
- School of Science, RMIT University, Melbourne, VIC, 3000, Australia.
- Department of Immunology, Monash University, Melbourne, VIC, 3004, Australia.
- Department of Surgery, Austin Health, The University of Melbourne, Heidelberg, VIC, 3084, Australia.
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4
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Penman R, Kariuki R, Shaw ZL, Dekiwadia C, Christofferson AJ, Bryant G, Vongsvivut J, Bryant SJ, Elbourne A. Gold nanoparticle adsorption alters the cell stiffness and cell wall bio-chemical landscape of Candida albicans fungal cells. J Colloid Interface Sci 2024; 654:390-404. [PMID: 37852025 DOI: 10.1016/j.jcis.2023.10.017] [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: 07/31/2023] [Revised: 09/08/2023] [Accepted: 10/04/2023] [Indexed: 10/20/2023]
Abstract
HYPOTHESIS Nanomaterials have been extensively investigated for a wide range of biomedical applications, including as antimicrobial agents, drug delivery vehicles, and diagnostic devices. The commonality between these biomedical applications is the necessity for the nanoparticle to interact with or pass through the cellular wall and membrane. Cell-nanomaterial interactions/uptake can occur in various ways, including adhering to the cell wall, forming aggregates on the surface, becoming absorbed within the cell wall itself, or transversing into the cell cytoplasm. These interactions are common to mammalian cells, bacteria, and yeast cells. This variety of interactions can cause changes to the integrity of the cell wall and the cell overall, but the precise mechanisms underpinning such interactions remain poorly understood. Here, we investigate the interaction between commonly investigated gold nanoparticles (AuNPs) and the cell wall/membrane of a model fungal cell to explore the general effects of interaction and uptake. EXPERIMENTS The interactions between 100 nm citrate-capped AuNPs and the cell wall of Candida albicans fungal cells were studied using a range of advanced microscopy techniques, including atomic force microscopy, confocal laser scanning microscopy, scanning electron microscopy, transmission electron microscopy, and synchrotron-FTIR micro-spectroscopy. FINDINGS In most cases, particles adhered on the cell surface, although instances of particles being up-taken into the cell cytoplasm and localised within the cell wall and membrane were also observed. There was a measurable increase in the stiffness of the fungal cell after AuNPs were introduced. Analysis of the synchrotron-FTIR data showed significant changes in spectral features associated with phospholipids and proteins after exposure to AuNPs.
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Affiliation(s)
- Rowan Penman
- School of Science, STEM College, RMIT University, Melbourne, VIC 3001, Australia
| | - Rashad Kariuki
- School of Science, STEM College, RMIT University, Melbourne, VIC 3001, Australia
| | - Z L Shaw
- School of Engineering, STEM College, RMIT University, Melbourne, VIC 3001, Australia
| | - Chaitali Dekiwadia
- RMIT Microscopy and Microanalysis Facility (RMMF), RMIT University, Melbourne, Victoria 3001, Australia
| | | | - Gary Bryant
- School of Science, STEM College, RMIT University, Melbourne, VIC 3001, Australia
| | - Jitraporn Vongsvivut
- Infrared Microspectroscopy (IRM) Beamline, ANSTO - Australian Synchrotron, Clayton, VIC 3168, Australia
| | - Saffron J Bryant
- School of Science, STEM College, RMIT University, Melbourne, VIC 3001, Australia.
| | - Aaron Elbourne
- School of Science, STEM College, RMIT University, Melbourne, VIC 3001, Australia.
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5
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Patteson AE, Asp ME, Janmey PA. Materials science and mechanosensitivity of living matter. APPLIED PHYSICS REVIEWS 2022; 9:011320. [PMID: 35392267 PMCID: PMC8969880 DOI: 10.1063/5.0071648] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 02/08/2022] [Indexed: 06/14/2023]
Abstract
Living systems are composed of molecules that are synthesized by cells that use energy sources within their surroundings to create fascinating materials that have mechanical properties optimized for their biological function. Their functionality is a ubiquitous aspect of our lives. We use wood to construct furniture, bacterial colonies to modify the texture of dairy products and other foods, intestines as violin strings, bladders in bagpipes, and so on. The mechanical properties of these biological materials differ from those of other simpler synthetic elastomers, glasses, and crystals. Reproducing their mechanical properties synthetically or from first principles is still often unattainable. The challenge is that biomaterials often exist far from equilibrium, either in a kinetically arrested state or in an energy consuming active state that is not yet possible to reproduce de novo. Also, the design principles that form biological materials often result in nonlinear responses of stress to strain, or force to displacement, and theoretical models to explain these nonlinear effects are in relatively early stages of development compared to the predictive models for rubberlike elastomers or metals. In this Review, we summarize some of the most common and striking mechanical features of biological materials and make comparisons among animal, plant, fungal, and bacterial systems. We also summarize some of the mechanisms by which living systems develop forces that shape biological matter and examine newly discovered mechanisms by which cells sense and respond to the forces they generate themselves, which are resisted by their environment, or that are exerted upon them by their environment. Within this framework, we discuss examples of how physical methods are being applied to cell biology and bioengineering.
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Affiliation(s)
- Alison E. Patteson
- Physics Department and BioInspired Institute, Syracuse University, Syracuse NY, 13244, USA
| | - Merrill E. Asp
- Physics Department and BioInspired Institute, Syracuse University, Syracuse NY, 13244, USA
| | - Paul A. Janmey
- Institute for Medicine and Engineering and Departments of Physiology and Physics & Astronomy, University of Pennsylvania, Philadelphia PA, 19104, USA
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6
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Shaw ZL, Cheeseman S, Huang LZY, Penman R, Ahmed T, Bryant SJ, Bryant G, Christofferson AJ, Orrell-Trigg R, Dekiwadia C, Truong VK, Vongsvivut JP, Walia S, Elbourne A. Illuminating the biochemical interaction of antimicrobial few-layer black phosphorus with microbial cells using synchrotron macro-ATR-FTIR. J Mater Chem B 2022; 10:7527-7539. [PMID: 35024716 DOI: 10.1039/d1tb02575a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In the fight against drug-resistant pathogenic bacterial and fungal cells, low-dimensional materials are emerging as a promising alternative treatment method. Specifically, few-layer black phosphorus (BP) has demonstrated its effectiveness against a wide range of pathogenic bacterial and fungal cells with studies suggesting low cytotoxicity towards healthy mammalian cells. However, the antimicrobial mechanism of action of BP is not well understood. Before new applications for this material can be realised, further in-depth investigations are required. In this work, the biochemical interaction between BP and a series of microbial cells is investigated using a variety of microscopy and spectroscopy techniques to provide a greater understanding of the antimicrobial mechanism. Synchrotron macro-attenuated total reflection-Fourier transform infrared (ATR-FTIR) micro-spectroscopy is used to elucidate the chemical changes occurring outside and within the cell of interest after exposure to BP nanoflakes. The ATR-FTIR data, coupled with high-resolution microscopy, reveals major physical and bio-chemical changes to the phospholipids and amide I and II proteins, as well as minor chemical changes to the structural polysaccharides and nucleic acids when compared to untreated cells. These changes can be attributed to the physical interaction of the BP nanoflakes with the cell membranes, combined with the oxidative stress induced by the degradation of the BP nanoflakes. This study provides insight into the biochemical interaction of BP nanoflakes with microbial cells, allowing for a better understanding of the antimicrobial mechanism of action that will be important for the next generation of applications such as implant coatings, wound dressings, or medical surfaces.
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Affiliation(s)
- Z L Shaw
- School of Engineering, College of Science, Engineering and Health, RMIT University, Melbourne, Victoria 3001, Australia.
| | - Samuel Cheeseman
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne Victoria 3001, Australia.
| | - Louisa Z Y Huang
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne Victoria 3001, Australia.
| | - Rowan Penman
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne Victoria 3001, Australia.
| | - Taimur Ahmed
- School of Engineering, College of Science, Engineering and Health, RMIT University, Melbourne, Victoria 3001, Australia. .,Pak-Austria Fachhochschule: Institute of Applied Sciences and Technology, Haripur, 22620, Pakistan
| | - Saffron J Bryant
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne Victoria 3001, Australia.
| | - Gary Bryant
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne Victoria 3001, Australia.
| | - Andrew J Christofferson
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne Victoria 3001, Australia.
| | - Rebecca Orrell-Trigg
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne Victoria 3001, Australia.
| | - Chaitali Dekiwadia
- RMIT Microscopy and Microanalysis Facility (RMMF), RMIT University, Melbourne, Victoria 3001, Australia
| | - Vi Khanh Truong
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne Victoria 3001, Australia.
| | - Jitraporn Pimm Vongsvivut
- Infrared Microspectroscopy Beamline, ANSTO Australian Synchrotron, Clayton, Victoria 3168, Australia
| | - Sumeet Walia
- School of Engineering, College of Science, Engineering and Health, RMIT University, Melbourne, Victoria 3001, Australia. .,Functional Materials and Microsystems Research Group and MicroNano Research Facility, RMIT University, Melbourne, Victoria 3001, Australia
| | - Aaron Elbourne
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne Victoria 3001, Australia.
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7
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Valdez-Salas B, Beltrán-Partida E, Curiel-Álvarez M, Guerra-Balcázar M, Arjona N. Crystallographic Pattern Mediates Fungal Nanoadhesion Bond Formation on Titanium Nanotubes. ACS OMEGA 2021; 6:15625-15636. [PMID: 34179607 PMCID: PMC8223204 DOI: 10.1021/acsomega.1c00475] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 05/26/2021] [Indexed: 06/13/2023]
Abstract
The development of nanoadhesion bonds at the cell-material biointerface has been considered as a current prospective mechanism of microbial adhesion and colonization. However, there is a tremendous lack of evidence for the rational design of outstanding antifungal nanoconfigured materials. Therefore, extending our previous insights of evidence, we found that blocking the adhesion and biofilm formation of Candida albicans on NTs requires the inhibition of fungal nanoadhesion bonds. This work reports a concept for understanding the antifungal behavior of the crystallographic phase for anatase (NTs-annealed) and amorphous NTs. Herein, we demonstrated that the crystallographic orientation is a predominant parameter to reduce C. albicans, over the surface roughness and chemistry. We showed that the anatase phase conducted to an invasive phenotype, cellular envelopment insertion, followed by the improved cellular spread. Meanwhile, the amorphous configuration imposed reduced nanoadhesion bonds mainly appreciated over the mouths of the NTs, as revealed by cross sectioning. Moreover, our results showed that under fungal conditions, the experimental materials could reduce the surface energy. This work highlights that the crystallographic pattern predominantly controls the antifungal activity of NTs. The evaluated systems proposed that the NTs-annealed conducted an optimized insertion of fungal cells. Nonetheless, amorphous NTs inhibited the deposition of C. albicans via blocking the insertion and the development of nanoadhesion bonds, without morphology aberrations. The present discoveries can further inspire the rational design of upgraded nanoconfigured surfaces with noteworthy antifungal characteristics for antimicrobial coating technologies.
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Affiliation(s)
- Benjamín Valdez-Salas
- Laboratorio
de Biología Molecular y Cáncer, Instituto de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez y Calle
de la Normal, Mexicali, Baja
California C.P. 21280, México
- Laboratorio
de Corrosión y Materiales Avanzados, Instituto de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez y Calle
de la Normal, Mexicali, Baja
California C. P. 21280, México
| | - Ernesto Beltrán-Partida
- Laboratorio
de Biología Molecular y Cáncer, Instituto de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez y Calle
de la Normal, Mexicali, Baja
California C.P. 21280, México
- Laboratorio
de Corrosión y Materiales Avanzados, Instituto de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez y Calle
de la Normal, Mexicali, Baja
California C. P. 21280, México
| | - Mario Curiel-Álvarez
- Laboratorio
de Corrosión y Materiales Avanzados, Instituto de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez y Calle
de la Normal, Mexicali, Baja
California C. P. 21280, México
| | - Minerva Guerra-Balcázar
- Facultad
de Ingeniería, División de Investigación y Posgrado, Universidad Autónoma de Querétaro, Querétaro C. P.
76010, México
| | - Noé Arjona
- Centro
de Investigación y Desarrollo Tecnológico en Electroquímica
S. C., Querétaro C. P. 76703, México
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8
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Kollu NV, LaJeunesse DR. Cell Rupture and Morphogenesis Control of the Dimorphic Yeast Candida albicans by Nanostructured Surfaces. ACS OMEGA 2021; 6:1361-1369. [PMID: 33490795 PMCID: PMC7818643 DOI: 10.1021/acsomega.0c04980] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 12/09/2020] [Indexed: 06/12/2023]
Abstract
Nanostructured surfaces control microbial biofilm formation by killing mechanically via surface architecture. However, the interactions between nanostructured surfaces (NSS) and cellular fungi have not been thoroughly investigated and the application of NSS as a means of controlling fungal biofilms is uncertain. Cellular yeast such as Candida albicans are structurally and biologically distinct from prokaryotic microbes and therefore are predicted to react differently to nanostructured surfaces. The dimorphic opportunistic fungal pathogen, C. albicans, is responsible for most cases of invasive candidiasis and is a serious health concern due to the rapid increase of drug resistance strains. In this paper, we show that the nanostructured surfaces from a cicada wing alter C. albicans' viability, biofilm formation, adhesion, and morphogenesis through physical contact. However, the fungal cell response to the NSS suggests that nanoscale mechanical interactions impact C. albicans differently than prokaryotic microbes. This study informs on the use of nanoscale architecture for the control of eukaryotic biofilm formation and illustrates some potential caveats with the application of NSS as an antimicrobial means.
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Affiliation(s)
- Naga Venkatesh Kollu
- Department of Nanoscience,
Joint School of Nanoscience and Nanoengineering, University of North Carolina Greensboro, Greensboro, North Carolina 27401, United States
| | - Dennis R. LaJeunesse
- Department of Nanoscience,
Joint School of Nanoscience and Nanoengineering, University of North Carolina Greensboro, Greensboro, North Carolina 27401, United States
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