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Recombinant protein production in Pseudoalteromonas haloplanktis TAC125 biofilm 卤化假单胞菌 TAC125 生物膜中的重组蛋白生产
IF 6.8
Biofilm Pub Date : 2024-01-24 DOI: 10.1016/j.bioflm.2024.100179
Marzia Calvanese , Caterina D'Angelo , Concetta Lauro , Maria Luisa Tutino , Ermenegilda Parrilli
{"title":"Recombinant protein production in Pseudoalteromonas haloplanktis TAC125 biofilm","authors":"Marzia Calvanese ,&nbsp;Caterina D'Angelo ,&nbsp;Concetta Lauro ,&nbsp;Maria Luisa Tutino ,&nbsp;Ermenegilda Parrilli","doi":"10.1016/j.bioflm.2024.100179","DOIUrl":"10.1016/j.bioflm.2024.100179","url":null,"abstract":"<div><p>Biofilms have great potential for producing valuable products, and recent research has been performed on biofilms for the production of compounds with biotechnological and industrial relevance. However, the production of recombinant proteins using this system is still limited. The recombinant protein production in microbial hosts is a well-established technology and a variety of expression systems are available. Nevertheless, the production of some recombinant proteins can result in proteolyzed, insoluble, and non-functional forms, therefore it is necessary to start the exploration of non-conventional production systems that, in the future, could be helpful to produce some “difficult” proteins. Non-conventional production systems can be based on the use of alternative hosts and/or on non-conventional ways to grow recombinant cells. In this paper, the use of the Antarctic marine bacterium <em>Pseudoalteromonas haloplanktis</em> TAC125 grown in biofilm conditions was explored to produce two fluorescent proteins, GFP and mScarlet. The best conditions for the production were identified by working on media composition, and induction conditions, and by building a new expression vector suitable for the biofilm conditions. Results reported demonstrated that the optimized system for the recombinant protein production in biofilm, although it takes longer than planktonic production, has the same potentiality as the classical planktonic approach with additional advantages since it needs a lower concentration of the carbon sources and doesn't require antibiotic addition. Moreover, in the case of mScarlet, the production in biofilm outperforms the planktonic system in terms of a better quality of the recombinant product.</p></div>","PeriodicalId":55844,"journal":{"name":"Biofilm","volume":"7 ","pages":"Article 100179"},"PeriodicalIF":6.8,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590207524000042/pdfft?md5=5ffc584d4ab994c41eca6d9c81d0fe45&pid=1-s2.0-S2590207524000042-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139638062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multimodal evaluation of drug antibacterial activity reveals cinnamaldehyde analog anti-biofilm effects against Haemophilus influenzae 药物抗菌活性的多模式评价揭示了肉桂醛类似物对流感嗜血杆菌的抗生物膜作用
IF 6.8
Biofilm Pub Date : 2024-01-17 DOI: 10.1016/j.bioflm.2024.100178
Javier Asensio-López , María Lázaro-Díez , Tania M. Hernández-Cruz , Núria Blanco-Cabra , Ioritz Sorzabal-Bellido , Eva M. Arroyo-Urea , Elena Buetas , Ana González-Paredes , Carlos Ortiz de Solórzano , Saioa Burgui , Eduard Torrents , María Monteserín , Junkal Garmendia
{"title":"Multimodal evaluation of drug antibacterial activity reveals cinnamaldehyde analog anti-biofilm effects against Haemophilus influenzae","authors":"Javier Asensio-López ,&nbsp;María Lázaro-Díez ,&nbsp;Tania M. Hernández-Cruz ,&nbsp;Núria Blanco-Cabra ,&nbsp;Ioritz Sorzabal-Bellido ,&nbsp;Eva M. Arroyo-Urea ,&nbsp;Elena Buetas ,&nbsp;Ana González-Paredes ,&nbsp;Carlos Ortiz de Solórzano ,&nbsp;Saioa Burgui ,&nbsp;Eduard Torrents ,&nbsp;María Monteserín ,&nbsp;Junkal Garmendia","doi":"10.1016/j.bioflm.2024.100178","DOIUrl":"10.1016/j.bioflm.2024.100178","url":null,"abstract":"<div><p>Biofilm formation by the pathobiont <em>Haemophilus influenzae</em> is associated with human nasopharynx colonization, otitis media in children, and chronic respiratory infections in adults suffering from chronic respiratory diseases such as chronic obstructive pulmonary disease (COPD). β-lactam and quinolone antibiotics are commonly used to treat these infections. However, considering the resistance of biofilm-resident bacteria to antibiotic-mediated killing, the use of antibiotics may be insufficient and require being replaced or complemented with novel strategies. Moreover, unlike the standard minimal inhibitory concentration assay used to assess antibacterial activity against planktonic cells, standardization of methods to evaluate anti-biofilm drug activity is limited. In this work, we detail a panel of protocols for systematic analysis of drug antimicrobial effect on bacterial biofilms, customized to evaluate drug effects against <em>H. influenzae</em> biofilms. Testing of two cinnamaldehyde analogs, (<em>E</em>)-trans-2-nonenal and (<em>E</em>)-3-decen-2-one, demonstrated their effectiveness in both <em>H. influenzae</em> inhibition of biofilm formation and eradication or preformed biofilms. Assay complementarity allowed quantifying the dynamics and extent of the inhibitory effects, also observed for ampicillin resistant clinical strains forming biofilms refractory to this antibiotic. Moreover, cinnamaldehyde analog encapsulation into poly(lactic-<em>co</em>-glycolic acid) (PLGA) polymeric nanoparticles allowed drug vehiculization while maintaining efficacy. Overall, we demonstrate the usefulness of cinnamaldehyde analogs against <em>H. influenzae</em> biofilms, present a test panel that can be easily adapted to a wide range of pathogens and drugs, and highlight the benefits of drug nanoencapsulation towards safe controlled release.</p></div>","PeriodicalId":55844,"journal":{"name":"Biofilm","volume":"7 ","pages":"Article 100178"},"PeriodicalIF":6.8,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590207524000030/pdfft?md5=17c58e04e417eb43a680ed6a84da5a57&pid=1-s2.0-S2590207524000030-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139539477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multi-species biofilms of environmental microbiota isolated from fruit packing facilities promoted tolerance of Listeria monocytogenes to benzalkonium chloride 从水果包装设施中分离出的环境微生物群的多物种生物膜促进了李斯特菌对苯扎氯铵的耐受性
IF 6.8
Biofilm Pub Date : 2024-01-14 DOI: 10.1016/j.bioflm.2024.100177
M. Laura Rolon , Olena Voloshchuk , Katelyn V. Bartlett , Luke F. LaBorde , Jasna Kovac
{"title":"Multi-species biofilms of environmental microbiota isolated from fruit packing facilities promoted tolerance of Listeria monocytogenes to benzalkonium chloride","authors":"M. Laura Rolon ,&nbsp;Olena Voloshchuk ,&nbsp;Katelyn V. Bartlett ,&nbsp;Luke F. LaBorde ,&nbsp;Jasna Kovac","doi":"10.1016/j.bioflm.2024.100177","DOIUrl":"https://doi.org/10.1016/j.bioflm.2024.100177","url":null,"abstract":"<div><p><em>Listeria monocytogenes</em> may survive and persist in food processing environments due to formation of complex multi-species biofilms of environmental microbiota that co-exists in these environments. This study aimed to determine the effect of selected environmental microbiota on biofilm formation and tolerance of <em>L. monocytogenes</em> to benzalkonium chloride in formed biofilms. The studied microbiota included bacterial families previously shown to co-occur with <em>L. monocytogenes</em> in tree fruit packing facilities, including <em>Pseudomonadaceae, Xanthomonadaceae, Microbacteriaceae</em>, and <em>Flavobacteriaceae.</em> Biofilm formation ability and the effect of formed biofilms on the tolerance of <em>L. monocytogenes</em> to benzalkonium chloride was measured in single- and multi-family assemblages. Biofilms were grown statically on polystyrene pegs submerged in a R2A broth. Biofilm formation was quantified using a crystal violet assay, spread-plating, confocal laser scanning microscopy, and its composition was assessed using amplicon sequencing. The concentration of <em>L. monocytogenes</em> in biofilms was determined using the most probable number method. Biofilms were exposed to the sanitizer benzalkonium chloride, and the death kinetics of <em>L. monocytogenes</em> were quantified using a most probable number method. A total of 8, 8, 6, and 3 strains of <em>Pseudomonadaceae, Xanthomonadaceae, Microbacteriaceae</em>, and <em>Flavobacteriaceae</em>, respectively, were isolated from the environmental microbiota of tree fruit packing facilities and were used in this study. Biofilms formed by <em>Pseudomonadaceae, Xanthomonadaceae</em>, and all multi-family assemblages had significantly higher concentration of bacteria, as well as <em>L. monocytogenes,</em> compared to biofilms formed by <em>L. monocytogenes</em> alone. Furthermore, multi-family assemblage biofilms increased the tolerance of <em>L. monocytogenes</em> to benzalkonium chloride compared to <em>L. monocytogenes</em> mono-species biofilms and planktonic multi-family assemblages.</p><p>These findings suggest that <em>L. monocytogenes</em> control strategies should focus not only on assessing the efficacy of sanitizers against <em>L. monocytogenes,</em> but also against biofilm-forming microorganisms that reside in the food processing built environment, such as <em>Pseudomonadaceae</em> or <em>Xanthomonadaceae</em>.</p></div>","PeriodicalId":55844,"journal":{"name":"Biofilm","volume":"7 ","pages":"Article 100177"},"PeriodicalIF":6.8,"publicationDate":"2024-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590207524000029/pdfft?md5=bd7100c2d3cc75c253f70bf8a0353113&pid=1-s2.0-S2590207524000029-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139549364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluating a polymicrobial biofilm model for structural components by co-culturing Komagataeibacter hansenii produced bacterial cellulose with Pseudomonas aeruginosa PAO1 通过共培养汉森科玛加泰氏菌(Komagataeibacter hansenii)生产的细菌纤维素和铜绿假单胞菌(Pseudomonas aeruginosa PAO1),评估结构组件的多微生物生物膜模型
IF 6.8
Biofilm Pub Date : 2024-01-06 DOI: 10.1016/j.bioflm.2024.100176
Usha Rani Mahadevaswamy , Sudarsan Mugunthan , Thomas Seviour , Staffan Kjelleberg , Sierin Lim
{"title":"Evaluating a polymicrobial biofilm model for structural components by co-culturing Komagataeibacter hansenii produced bacterial cellulose with Pseudomonas aeruginosa PAO1","authors":"Usha Rani Mahadevaswamy ,&nbsp;Sudarsan Mugunthan ,&nbsp;Thomas Seviour ,&nbsp;Staffan Kjelleberg ,&nbsp;Sierin Lim","doi":"10.1016/j.bioflm.2024.100176","DOIUrl":"10.1016/j.bioflm.2024.100176","url":null,"abstract":"<div><p>A polymicrobial biofilm model of <em>Komagataeibacter hansenii</em> and <em>Pseudomonas aeruginosa</em> was developed to understand whether a pre-existing matrix affects the ability of another species to build a biofilm. <em>P. aeruginosa</em> was inoculated onto the preformed <em>K. hansenii</em> biofilm consisting of a cellulose matrix. <em>P. aeruginosa</em> PAO1 colonized and infiltrated the <em>K. hansenii</em> bacterial cellulose biofilm (BC), as indicated by the presence of cells at 19 μm depth in the translucent hydrogel matrix. Bacterial cell density increased along the imaged depth of the biofilm (17-19 μm). On day 5, the average bacterial count across sections was 67 ± 4 % <em>P</em>. <em>aeruginosa</em> PAO1 and 33 ± 6 % <em>K. hansenii</em>. Biophysical characterization of the biofilm indicated that colonization by <em>P. aeruginosa</em> modified the biophysical properties of the BC matrix, which inlcuded increased density, heterogeneity, degradation temperature and thermal stability, and reduced crystallinity, swelling ability and moisture content. This further indicates colonization of the biofilm by <em>P. aeruginosa.</em> While eDNA fibres - a key viscoelastic component of <em>P. aeruginosa</em> biofilm - were present on the surface of the co-cultured biofilm on day 1, their abundance decreased over time, and by day 5, no eDNA was observed, either on the surface or within the matrix. <em>P. aeruginosa</em>-colonized biofilm devoid of eDNA retained its mechanical properties. The observations demonstrate that a pre-existing biofilm scaffold of <em>K. hansenii</em> inhibits <em>P. aeruginosa</em> PAO1 eDNA production and suggest that eDNA production is a response by <em>P. aeruginosa</em> to the viscoelastic properties of its environment.</p></div>","PeriodicalId":55844,"journal":{"name":"Biofilm","volume":"7 ","pages":"Article 100176"},"PeriodicalIF":6.8,"publicationDate":"2024-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590207524000017/pdfft?md5=40722a72395d4bc5bddc6111baf065e3&pid=1-s2.0-S2590207524000017-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139396045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Staphylococcus aureus biofilm: Formulation, regulatory, and emerging natural products-derived therapeutics 金黄色葡萄球菌生物膜:配方、监管和新兴天然产品疗法
IF 6.8
Biofilm Pub Date : 2024-01-01 DOI: 10.1016/j.bioflm.2023.100175
Xiying Wu , Huan Wang , Juan Xiong , Guo-Xun Yang , Jin-Feng Hu , Quangang Zhu , Zhongjian Chen
{"title":"Staphylococcus aureus biofilm: Formulation, regulatory, and emerging natural products-derived therapeutics","authors":"Xiying Wu ,&nbsp;Huan Wang ,&nbsp;Juan Xiong ,&nbsp;Guo-Xun Yang ,&nbsp;Jin-Feng Hu ,&nbsp;Quangang Zhu ,&nbsp;Zhongjian Chen","doi":"10.1016/j.bioflm.2023.100175","DOIUrl":"10.1016/j.bioflm.2023.100175","url":null,"abstract":"<div><p><em>Staphylococcus aureus</em> can readily form biofilm which enhances the drug-resistance, resulting in life-threatening infections involving different organs. Biofilm formation occurs due to a series of developmental events including bacterial adhesion, aggregation, biofilm maturation, and dispersion, which are controlled by multiple regulatory systems. Rapidly increasing research and development outcomes on natural products targeting <em>S. aureus</em> biofilm formation and/or regulation led to an emergent application of active phytochemicals and combinations. This review aimed at providing an in-depth understanding of biofilm formation and regulation mechanisms for <em>S. aureus</em>, outlining the most important antibiofilm strategies and potential targets of natural products, and summarizing the latest progress in combating <em>S. aureus</em> biofilm with plant-derived natural products. These findings provided further evidence for novel antibiofilm drugs research and clinical therapies.</p></div>","PeriodicalId":55844,"journal":{"name":"Biofilm","volume":"7 ","pages":"Article 100175"},"PeriodicalIF":6.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590207523000722/pdfft?md5=de95160fca89faa521330c2223df4f04&pid=1-s2.0-S2590207523000722-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139126022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Molecular mechanisms of DNase inhibition of early biofilm formation Pseudomonas aeruginosa or Staphylococcus aureus: A transcriptome analysis DNase 抑制铜绿假单胞菌或金黄色葡萄球菌早期生物膜形成的分子机制:转录组分析
IF 6.8
Biofilm Pub Date : 2023-12-26 DOI: 10.1016/j.bioflm.2023.100174
Wusheng Deng , Chuanlin Zhou , Jiaoxia Qin , Yun Jiang , Dingbin Li , Xiujia Tang , Jing Luo , Jinliang Kong , Ke Wang
{"title":"Molecular mechanisms of DNase inhibition of early biofilm formation Pseudomonas aeruginosa or Staphylococcus aureus: A transcriptome analysis","authors":"Wusheng Deng ,&nbsp;Chuanlin Zhou ,&nbsp;Jiaoxia Qin ,&nbsp;Yun Jiang ,&nbsp;Dingbin Li ,&nbsp;Xiujia Tang ,&nbsp;Jing Luo ,&nbsp;Jinliang Kong ,&nbsp;Ke Wang","doi":"10.1016/j.bioflm.2023.100174","DOIUrl":"10.1016/j.bioflm.2023.100174","url":null,"abstract":"<div><p><em>In vitro</em> studies show that DNase can inhibit <em>Pseudomonas aeruginosa</em> and <em>Staphylococcus aureus</em> biofilm formation. However, the underlying molecular mechanisms remain poorly understood. This study used an RNA-sequencing transcriptomic approach to investigate the mechanism by which DNase I inhibits early <em>P. aeruginosa</em> and <em>S. aureus</em> biofilm formation on a transcriptional level, respectively. A total of 1171 differentially expressed genes (DEGs) in <em>P. aeruginosa</em> and 1016 DEGs in <em>S. aureus</em> enriched in a variety of biological processes and pathways were identified, respectively. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses revealed that the DEGs were primarily involved in <em>P. aeruginosa</em> two-component system, biofilm formation, and flagellar assembly and in <em>S. aureus</em> biosynthesis of secondary metabolites, microbial metabolism in diverse environments, and biosynthesis of amino acids, respectively. The transcriptional data were validated using quantitative real-time polymerase chain reaction (RT-qPCR), and the expression profiles of 22 major genes remained consistent. These findings suggested that DNase I may inhibit early biofilm formation by downregulating the expression of <em>P. aeruginosa</em> genes associated with flagellar assembly and the type VI secretion system, and by downregulating <em>S. aureus</em> capsular polysaccharide and amino acids metabolism gene expression, respectively. This study offers insights into the mechanisms of DNase treatment-based inhibition of early <em>P. aeruginosa</em> and <em>S. aureus</em> biofilm formation.</p></div>","PeriodicalId":55844,"journal":{"name":"Biofilm","volume":"7 ","pages":"Article 100174"},"PeriodicalIF":6.8,"publicationDate":"2023-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590207523000710/pdfft?md5=74589b71e11946c4375f79d94cc5af0a&pid=1-s2.0-S2590207523000710-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139190125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Controlling of foodborne pathogen biofilms on stainless steel by bacteriophages: A systematic review and meta-analysis 噬菌体控制不锈钢上的食源性病原体生物膜:系统回顾与荟萃分析
IF 6.8
Biofilm Pub Date : 2023-12-17 DOI: 10.1016/j.bioflm.2023.100170
Rahim Azari , Mohammad Hashem Yousefi , Aziz A. Fallah , Arezoo Alimohammadi , Nastaran Nikjoo , Jeroen Wagemans , Enayat Berizi , Saeid Hosseinzadeh , Mohammad Ghasemi , Amin Mousavi Khaneghah
{"title":"Controlling of foodborne pathogen biofilms on stainless steel by bacteriophages: A systematic review and meta-analysis","authors":"Rahim Azari ,&nbsp;Mohammad Hashem Yousefi ,&nbsp;Aziz A. Fallah ,&nbsp;Arezoo Alimohammadi ,&nbsp;Nastaran Nikjoo ,&nbsp;Jeroen Wagemans ,&nbsp;Enayat Berizi ,&nbsp;Saeid Hosseinzadeh ,&nbsp;Mohammad Ghasemi ,&nbsp;Amin Mousavi Khaneghah","doi":"10.1016/j.bioflm.2023.100170","DOIUrl":"10.1016/j.bioflm.2023.100170","url":null,"abstract":"<div><p>This study investigates the potential of using bacteriophages to control foodborne pathogen biofilms on stainless steel surfaces in the food industry. Biofilm-forming bacteria can attach to stainless steel surfaces, rendering them difficult to eradicate even after a thorough cleaning and sanitizing procedures. Bacteriophages have been proposed as a possible solution, as they can penetrate biofilms and destroy bacterial cells within, reducing the number of viable bacteria and preventing the growth and spread of biofilms. This systematic review and meta-analysis evaluates the potential of bacteriophages against different biofilm-forming foodborne bacteria, including <em>Cronobacter sakazakii</em>, <em>Escherichia coli</em>, <em>Staphylococcus aureus</em>, <em>Pseudomonas fluorescens</em>, <em>Pseudomonas aeruginosa</em> and <em>Listeria monocytogenes</em>. Bacteriophage treatment generally causes a significant average reduction of 38 % in biofilm formation of foodborne pathogens on stainless steel. Subgroup analyses revealed that phages are more efficient in long-duration treatment. Also, applying a cocktail of phages is 1.26-fold more effective than applying individual phages. Phages at concentrations exceeding 10<sup>7</sup> PFU/ml are significantly more efficacious in eradicating bacteria within a biofilm. The antibacterial phage activity decreases substantially by 3.54-fold when applied at 4 °C compared to temperatures above 25 °C. This analysis suggests that bacteriophages can be a promising solution for controlling biofilms in the food industry.</p></div>","PeriodicalId":55844,"journal":{"name":"Biofilm","volume":"7 ","pages":"Article 100170"},"PeriodicalIF":6.8,"publicationDate":"2023-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590207523000679/pdfft?md5=c368579415c79e3f41ca68cd79619c68&pid=1-s2.0-S2590207523000679-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139021511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Porphyromonas gingivalis interaction with Candida albicans allows for aerobic escape, virulence and adherence 牙龈卟啉单胞菌与白色念珠菌的相互作用可使其产生需氧逃逸、毒力和粘附力
IF 6.8
Biofilm Pub Date : 2023-12-17 DOI: 10.1016/j.bioflm.2023.100172
Caroline A. de Jongh , Floris J. Bikker , Teun J. de Vries , Arie Werner , Susan Gibbs , Bastiaan P. Krom
{"title":"Porphyromonas gingivalis interaction with Candida albicans allows for aerobic escape, virulence and adherence","authors":"Caroline A. de Jongh ,&nbsp;Floris J. Bikker ,&nbsp;Teun J. de Vries ,&nbsp;Arie Werner ,&nbsp;Susan Gibbs ,&nbsp;Bastiaan P. Krom","doi":"10.1016/j.bioflm.2023.100172","DOIUrl":"10.1016/j.bioflm.2023.100172","url":null,"abstract":"<div><p>In the oral cavity <em>Candida albicans</em> interacts with many oral bacteria, including <em>Porphyromonas gingivalis</em>, both physically and metabolically. The aim of this <em>in vitro</em> study was to characterize these interactions and study their effects on the survival of <em>P. gingivalis</em>. First, metabolic interactions were evaluated by counting the colony forming units (CFU) after co-culturing. The results indicated that the anaerobic bacterium <em>P. gingivalis</em> survives under aerobic conditions when co-cultured with <em>C. albicans</em>. This is due to the oxygen consumption by <em>C. albicans</em> as determined by a reduction in survival upon the addition of Antimycin A. By measuring the protease activity, it was found that the presence of <em>C. albicans</em> induced gingipain activity by <em>P. gingivalis</em>, which is an important virulence factor. Adherence of <em>P. gingivalis</em> to hyphae of <em>C. albicans</em> was observed with a dynamic flow system. Using various <em>C. albicans</em> mutants, it was shown that the mechanism of adhesion was mediated by the cell wall adhesins, members of the agglutinin-like sequence (Als) family: Als3 and Als1. Furthermore, the two microorganisms could be co-cultured into forming a biofilm in which <em>P. gingivalis</em> can survive under aerobic culturing conditions, which was imaged using scanning electron microscopy. This study has further elucidated mechanisms of interaction, virulence acquisition and survival of <em>P. gingivalis</em> when co-cultured with <em>C. albicans</em>. Such survival could be essential for the pathogenicity of <em>P. gingivalis</em> in the oxygen-rich niches of the oral cavity. This study has emphasized the importance of interaction between different microbes in promoting survival, virulence and attachment of pathogens, which could be essential in facilitating penetration into the environment of the host.</p></div>","PeriodicalId":55844,"journal":{"name":"Biofilm","volume":"7 ","pages":"Article 100172"},"PeriodicalIF":6.8,"publicationDate":"2023-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590207523000692/pdfft?md5=cc574f1ced78a44065341f6675fc1e1b&pid=1-s2.0-S2590207523000692-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139024925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biofilm and human spaceflight 生物膜对人类太空飞行的影响
IF 6.8
Biofilm Pub Date : 2023-12-15 DOI: 10.1016/j.bioflm.2023.100150
Darla M. Goeres, Yo-Ann Velez-Justiniano, Birthe Veno Kjellerup, Robert JC. McLean
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引用次数: 0
Biofilm research highlights networked globally 生物膜研究的重点是全球网络化
IF 6.8
Biofilm Pub Date : 2023-12-15 DOI: 10.1016/j.bioflm.2023.100148
Junyan Liu, Liang Yang, Yue Qu, Gamini Seneviratne, Guanglei Qiu, Yulong Tan, Zhenbo Xu, Birthe V. Kjellerup
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引用次数: 0
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