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Chen N, Li Y, Liang X, Qin K, Zhang Y, Wang J, Wu Q, Gupta TB, Ding Y. Bacterial extracellular vesicle: A non-negligible component in biofilm life cycle and challenges in biofilm treatments. Biofilm 2024; 8:100216. [PMID: 39184814 PMCID: PMC11341940 DOI: 10.1016/j.bioflm.2024.100216] [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: 04/07/2024] [Revised: 07/23/2024] [Accepted: 07/24/2024] [Indexed: 08/27/2024] Open
Abstract
Bacterial biofilms, especially those formed by pathogens, have been increasingly impacting human health. Bacterial extracellular vesicle (bEV), a kind of spherical membranous structure released by bacteria, has not only been reported to be a component of the biofilm matrix but also plays a non-negligible role in the biofilm life cycle. Nevertheless, a comprehensive overview of the bEVs functions in biofilms remains elusive. In this review, we summarize the biogenesis and distinctive features characterizing bEVs, and consolidate the current literature on their functions and proposed mechanisms in the biofilm life cycle. Furthermore, we emphasize the formidable challenges associated with vesicle interference in biofilm treatments. The primary objective of this review is to raise awareness regarding the functions of bEVs in the biofilm life cycle and lay the groundwork for the development of novel therapeutic strategies to control or even eliminate bacterial biofilms.
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Affiliation(s)
- Nuo Chen
- National Health Commission Science and Technology Innovation Platform for Nutrition and Safety of Microbial Food, Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
- Department of Food Science and Engineering, Institute of Food Safety and Nutrition, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Yangfu Li
- National Health Commission Science and Technology Innovation Platform for Nutrition and Safety of Microbial Food, Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
- Department of Food Science and Engineering, Institute of Food Safety and Nutrition, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Xinmin Liang
- National Health Commission Science and Technology Innovation Platform for Nutrition and Safety of Microbial Food, Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
- Department of Food Science and Engineering, Institute of Food Safety and Nutrition, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Keyuan Qin
- National Health Commission Science and Technology Innovation Platform for Nutrition and Safety of Microbial Food, Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
- Department of Food Science and Engineering, Institute of Food Safety and Nutrition, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Ying Zhang
- National Health Commission Science and Technology Innovation Platform for Nutrition and Safety of Microbial Food, Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Juan Wang
- College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Qingping Wu
- National Health Commission Science and Technology Innovation Platform for Nutrition and Safety of Microbial Food, Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Tanushree B. Gupta
- Food System Integrity Team, AgResearch Ltd., Hopkirk Research Institute, Massey University, Palmerston North, 4474, New Zealand
| | - Yu Ding
- Department of Food Science and Engineering, Institute of Food Safety and Nutrition, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
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Nie X, Li Q, Chen X, Onyango S, Xie J, Nie S. Bacterial extracellular vesicles: Vital contributors to physiology from bacteria to host. Microbiol Res 2024; 284:127733. [PMID: 38678680 DOI: 10.1016/j.micres.2024.127733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/15/2024] [Accepted: 04/18/2024] [Indexed: 05/01/2024]
Abstract
Bacterial extracellular vesicles (bEVs) represent spherical particles with diameters ranging from 20 to 400 nm filled with multiple parental bacteria-derived components, including proteins, nucleic acids, lipids, and other biomolecules. The production of bEVs facilitates bacteria interacting with their environment and exerting biological functions. It is increasingly evident that the bEVs play integral roles in both bacterial and host physiology, contributing to environmental adaptations to functioning as health promoters for their hosts. This review highlights the current state of knowledge on the composition, biogenesis, and diversity of bEVs and the mechanisms by which different bEVs elicit effects on bacterial physiology and host health. We posit that an in-depth exploration of the mechanistic aspects of bEVs activity is essential to elucidate their health-promoting effects on the host and may facilitate the translation of bEVs into applications as novel natural biological nanomaterials.
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Affiliation(s)
- Xinke Nie
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Qiqiong Li
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Xinyang Chen
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | | | - Junhua Xie
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
| | - Shaoping Nie
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
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3
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Effah CY, Ding X, Drokow EK, Li X, Tong R, Sun T. Bacteria-derived extracellular vesicles: endogenous roles, therapeutic potentials and their biomimetics for the treatment and prevention of sepsis. Front Immunol 2024; 15:1296061. [PMID: 38420121 PMCID: PMC10899385 DOI: 10.3389/fimmu.2024.1296061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 01/24/2024] [Indexed: 03/02/2024] Open
Abstract
Sepsis is one of the medical conditions with a high mortality rate and lacks specific treatment despite several years of extensive research. Bacterial extracellular vesicles (bEVs) are emerging as a focal target in the pathophysiology and treatment of sepsis. Extracellular vesicles (EVs) derived from pathogenic microorganisms carry pathogenic factors such as carbohydrates, proteins, lipids, nucleic acids, and virulence factors and are regarded as "long-range weapons" to trigger an inflammatory response. In particular, the small size of bEVs can cross the blood-brain and placental barriers that are difficult for pathogens to cross, deliver pathogenic agents to host cells, activate the host immune system, and possibly accelerate the bacterial infection process and subsequent sepsis. Over the years, research into host-derived EVs has increased, leading to breakthroughs in cancer and sepsis treatments. However, related approaches to the role and use of bacterial-derived EVs are still rare in the treatment of sepsis. Herein, this review looked at the dual nature of bEVs in sepsis by highlighting their inherent functions and emphasizing their therapeutic characteristics and potential. Various biomimetics of bEVs for the treatment and prevention of sepsis have also been reviewed. Finally, the latest progress and various obstacles in the clinical application of bEVs have been highlighted.
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Affiliation(s)
- Clement Yaw Effah
- Department of Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Henan Engineering Research Center for Critical Care Medicine, Henan Key Laboratory of Critical Care Medicine, Zhengzhou, China
- Department of Emergency Medicine, The First Affiliated Hospital of Zhengzhou University, Henan Engineering Research Center for Critical Care Medicine, Henan Key Laboratory of Critical Care Medicine, Zhengzhou, China
- Zhengzhou Key Laboratory of Sepsis, Henan Sepsis Diagnosis and Treatment Center, Henan Key Laboratory of Sepsis in Health Commission, Zhengzhou, China
| | - Xianfei Ding
- Department of Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Henan Engineering Research Center for Critical Care Medicine, Henan Key Laboratory of Critical Care Medicine, Zhengzhou, China
- Department of Emergency Medicine, The First Affiliated Hospital of Zhengzhou University, Henan Engineering Research Center for Critical Care Medicine, Henan Key Laboratory of Critical Care Medicine, Zhengzhou, China
- Zhengzhou Key Laboratory of Sepsis, Henan Sepsis Diagnosis and Treatment Center, Henan Key Laboratory of Sepsis in Health Commission, Zhengzhou, China
| | - Emmanuel Kwateng Drokow
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Department of Epidemiology and Biostatistics, Xiangya School of Public Health, Central South University, Changsha, Hunan, China
| | - Xiang Li
- Department of Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Henan Engineering Research Center for Critical Care Medicine, Henan Key Laboratory of Critical Care Medicine, Zhengzhou, China
- Department of Emergency Medicine, The First Affiliated Hospital of Zhengzhou University, Henan Engineering Research Center for Critical Care Medicine, Henan Key Laboratory of Critical Care Medicine, Zhengzhou, China
- Zhengzhou Key Laboratory of Sepsis, Henan Sepsis Diagnosis and Treatment Center, Henan Key Laboratory of Sepsis in Health Commission, Zhengzhou, China
| | - Ran Tong
- Department of Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Henan Engineering Research Center for Critical Care Medicine, Henan Key Laboratory of Critical Care Medicine, Zhengzhou, China
- Department of Emergency Medicine, The First Affiliated Hospital of Zhengzhou University, Henan Engineering Research Center for Critical Care Medicine, Henan Key Laboratory of Critical Care Medicine, Zhengzhou, China
- Zhengzhou Key Laboratory of Sepsis, Henan Sepsis Diagnosis and Treatment Center, Henan Key Laboratory of Sepsis in Health Commission, Zhengzhou, China
| | - Tongwen Sun
- Department of Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Henan Engineering Research Center for Critical Care Medicine, Henan Key Laboratory of Critical Care Medicine, Zhengzhou, China
- Department of Emergency Medicine, The First Affiliated Hospital of Zhengzhou University, Henan Engineering Research Center for Critical Care Medicine, Henan Key Laboratory of Critical Care Medicine, Zhengzhou, China
- Zhengzhou Key Laboratory of Sepsis, Henan Sepsis Diagnosis and Treatment Center, Henan Key Laboratory of Sepsis in Health Commission, Zhengzhou, China
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Zhang H, Yang J, Cheng J, Zeng J, Ma X, Lin J. PQS and pyochelin in Pseudomonas aeruginosa share inner membrane transporters to mediate iron uptake. Microbiol Spectr 2024; 12:e0325623. [PMID: 38171001 PMCID: PMC10846271 DOI: 10.1128/spectrum.03256-23] [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: 08/31/2023] [Accepted: 11/29/2023] [Indexed: 01/05/2024] Open
Abstract
Bacteria absorb different forms of iron through various channels to meet their needs. Our previous studies have shown that TseF, a type VI secretion system effector for Fe uptake, facilitates the delivery of outer membrane vesicle-associated Pseudomonas quinolone signal (PQS)-Fe3+ to bacterial cells by a process involving the Fe(III) pyochelin receptor FptA and the porin OprF. However, the form in which the PQS-Fe3+ complex enters the periplasm and how it is moved into the cytoplasm remain unclear. Here, we first demonstrate that the PQS-Fe3+ complex enters the cell directly through FptA or OprF. Next, we show that inner membrane transporters such as FptX, PchHI, and FepBCDG are not only necessary for Pseudomonas aeruginosa to absorb PQS-Fe3+ and pyochelin (PCH)-Fe3+ but are also necessary for the virulence of P. aeruginosa toward Galleria mellonella larvae. Furthermore, we suggest that the function of PQS-Fe3+ (but not PQS)-mediated quorum-sensing regulation is dependent on FptX, PchHI, and FepBCDG. Additionally, the findings indicate that unlike FptX, neither FepBCDG nor PchHI play roles in the autoregulatory loop involving PchR, but further deletion of fepBCDG and pchHI can reverse the inactive PchR phenotype caused by fptX deletion and reactivate the expression of the PCH pathway genes under iron-limited conditions. Finally, this work identifies the interaction between FptX, PchHI, and FepBCDG, indicating that a larger complex could be formed to mediate the uptake of PQS-Fe3+ and PCH-Fe3+. These results pave the way for a better understanding of the PQS and PCH iron absorption pathways and provide future directions for research on tackling P. aeruginosa infections.IMPORTANCEPseudomonas aeruginosa has evolved a number of strategies to acquire the iron it needs from its host, with the most common being the synthesis, secretion, and uptake of siderophores such as pyoverdine, pyochelin, and the quorum-sensing signaling molecule Pseudomonas quinolone signal (PQS). However, despite intensive studies of the siderophore uptake pathways of P. aeruginosa, our understanding of how siderophores transport iron across the inner membrane into the cytoplasm is still incomplete. Herein, we reveal that PQS and pyochelin in P. aeruginosa share inner membrane transporters such as FptX, PchHI, and FepBCDG to mediate iron uptake. Meanwhile, PQS and pyochelin-mediated signaling operate to a large extent via these inner membrane transporters. Our study revealed the existence of shared uptake pathways between PQS and pyochelin, which could lead us to reexamine the role of these two molecules in the iron uptake and virulence of P. aeruginosa.
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Affiliation(s)
- Heng Zhang
- Shaanxi Key Laboratory of Chinese Jujube, College of Life Sciences, Yan’an University, Yan’an, China
| | - Jianshe Yang
- Shaanxi Key Laboratory of Chinese Jujube, College of Life Sciences, Yan’an University, Yan’an, China
| | - Juanli Cheng
- Shaanxi Key Laboratory of Chinese Jujube, College of Life Sciences, Yan’an University, Yan’an, China
| | - Jing Zeng
- Shaanxi Key Laboratory of Chinese Jujube, College of Life Sciences, Yan’an University, Yan’an, China
| | - Xin Ma
- Shaanxi Key Laboratory of Chinese Jujube, College of Life Sciences, Yan’an University, Yan’an, China
| | - Jinshui Lin
- Shaanxi Key Laboratory of Chinese Jujube, College of Life Sciences, Yan’an University, Yan’an, China
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Liu BD, Akbar R, Oliverio A, Thapa K, Wang X, Fan GC. BACTERIAL EXTRACELLULAR VESICLES IN THE REGULATION OF INFLAMMATORY RESPONSE AND HOST-MICROBE INTERACTIONS. Shock 2024; 61:175-188. [PMID: 37878470 PMCID: PMC10921997 DOI: 10.1097/shk.0000000000002252] [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] [Indexed: 10/27/2023]
Abstract
ABSTRACT Extracellular vesicles (EVs) are a new revelation in cross-kingdom communication, with increasing evidence showing the diverse roles of bacterial EVs (BEVs) in mammalian cells and host-microbe interactions. Bacterial EVs include outer membrane vesicles released by gram-negative bacteria and membrane vesicles generated from gram-positive bacteria. Recently, BEVs have drawn attention for their potential as biomarkers and therapeutic tools because they are nano-sized and can deliver bacterial cargo into host cells. Importantly, exposure to BEVs significantly affects various physiological and pathological responses in mammalian cells. Herein, we provide a comprehensive overview of the various effects of BEVs on host cells (i.e., immune cells, endothelial cells, and epithelial cells) and inflammatory/infectious diseases. First, the biogenesis and purification methods of BEVs are summarized. Next, the mechanisms and pathways identified by BEVs that stimulate either proinflammatory or anti-inflammatory responses are highlighted. In addition, we discuss the mechanisms by which BEVs regulate host-microbe interactions and their effects on the immune system. Finally, this review focuses on the contribution of BEVs to the pathogenesis of sepsis/septic shock and their therapeutic potential for the treatment of sepsis.
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Affiliation(s)
- Benjamin D. Liu
- Department of Chemistry and Biochemistry, The Ohio State University College of Arts and Sciences, Columbus, OH, 43210, USA
| | - Rubab Akbar
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Anna Oliverio
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Kajol Thapa
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Xiaohong Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
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Abubaker S, Miri S, Mottawea W, Hammami R. Microbial Extracellular Vesicles in Host-Microbiota Interactions. Results Probl Cell Differ 2024; 73:475-520. [PMID: 39242390 DOI: 10.1007/978-3-031-62036-2_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2024]
Abstract
Extracellular vesicles have emerged as key players in cellular communication, influencing various physiological processes and pathophysiological progression, including digestion, immune response, and tissue repairs. Recently, a class of EVs derived from microbial communities has gained significant attention due to their pivotal role in intercellular communication and their potential as biomarkers and biotherapeutic agents. Microbial EVs are membrane-bound molecules encapsulating bioactive metabolites that modulate host physiological and pathological processes. This chapter discusses the evolving history of microbiota-produced EVs, including their discovery, characterization, current research status, and their diverse mechanisms of interaction with other microbes and hosts. This review also highlights the importance of EVs in health and disease and discusses recent research that shows promising results for the therapeutic potential of EVs.
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Affiliation(s)
- Sarah Abubaker
- Faculty of Health Sciences, School of Nutrition Sciences, University of Ottawa, Ottawa, ON, Canada
| | - Saba Miri
- Faculty of Health Sciences, School of Nutrition Sciences, University of Ottawa, Ottawa, ON, Canada
| | - Walid Mottawea
- Faculty of Health Sciences, School of Nutrition Sciences, University of Ottawa, Ottawa, ON, Canada
| | - Riadh Hammami
- Faculty of Health Sciences, School of Nutrition Sciences, University of Ottawa, Ottawa, ON, Canada.
- Faculty of Medicine, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON, Canada.
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Kanno M, Shiota T, Ueno S, Takahara M, Haneda K, Tahara YO, Shintani M, Nakao R, Miyata M, Kimbara K, Futamata H, Tashiro Y. Identification of genes involved in enhanced membrane vesicle formation in Pseudomonas aeruginosa biofilms: surface sensing facilitates vesiculation. Front Microbiol 2023; 14:1252155. [PMID: 38107868 PMCID: PMC10722149 DOI: 10.3389/fmicb.2023.1252155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 11/13/2023] [Indexed: 12/19/2023] Open
Abstract
Membrane vesicles (MVs) are small spherical structures (20-400 nm) produced by most bacteria and have important biological functions including toxin delivery, signal transfer, biofilm formation, and immunomodulation of the host. Although MV formation is enhanced in biofilms of a wide range of bacterial species, the underlying mechanisms are not fully understood. An opportunistic pathogen, Pseudomonas aeruginosa, causes chronic infections that can be difficult to treat due to biofilm formation. Since MVs are abundant in biofilms, can transport virulence factors to the host, and have inflammation-inducing functions, the mechanisms of enhanced MV formation in biofilms needs to be elucidated to effectively treat infections. In this study, we evaluated the characteristics of MVs in P. aeruginosa PAO1 biofilms, and identified factors that contribute to enhanced MV formation. Vesiculation was significantly enhanced in the static culture; MVs were connected to filamentous substances in the biofilm, and separation between the outer and inner membranes and curvature of the membrane were observed in biofilm cells. By screening a transposon mutant library (8,023 mutants) for alterations in MV formation in biofilms, 66 mutants were identified as low-vesiculation strains (2/3 decrease relative to wild type), whereas no mutant was obtained that produced more MVs (twofold increase). Some transposons were inserted into genes related to biofilm formation, including flagellar motility (flg, fli, and mot) and extracellular polysaccharide synthesis (psl). ΔpelAΔpslA, which does not synthesize the extracellular polysaccharides Pel and Psl, showed reduced MV production in biofilms but not in planktonic conditions, suggesting that enhanced vesiculation is closely related to the synthesis of biofilm matrices in P. aeruginosa. Additionally, we found that blebbing occurred during bacterial attachment. Our findings indicate that biofilm-related factors are closely involved in enhanced MV formation in biofilms and that surface sensing facilitates vesiculation. Furthermore, this work expands the understanding of the infection strategy in P. aeruginosa biofilms.
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Affiliation(s)
- Mizuki Kanno
- Graduate School of Science and Technology, Shizuoka University, Hamamatsu, Japan
- Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu, Japan
| | - Takuya Shiota
- Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu, Japan
| | - So Ueno
- Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu, Japan
| | - Minato Takahara
- Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu, Japan
| | - Keisuke Haneda
- Department of Applied Chemistry and Biochemical Engineering, Faculty of Engineering, Shizuoka University, Hamamatsu, Japan
| | - Yuhei O. Tahara
- Graduate School of Science, Osaka Metropolitan University, Osaka, Japan
| | - Masaki Shintani
- Graduate School of Science and Technology, Shizuoka University, Hamamatsu, Japan
- Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu, Japan
- Department of Applied Chemistry and Biochemical Engineering, Faculty of Engineering, Shizuoka University, Hamamatsu, Japan
- Research Institute of Green Science and Technology, Shizuoka University, Shizuoka, Japan
- Japan Collection of Microorganisms, RIKEN BioResource Research Center, Tsukuba, Japan
| | - Ryoma Nakao
- Department of Bacteriology, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan
| | - Makoto Miyata
- Graduate School of Science, Osaka Metropolitan University, Osaka, Japan
| | - Kazuhide Kimbara
- Graduate School of Science and Technology, Shizuoka University, Hamamatsu, Japan
- Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu, Japan
- Department of Applied Chemistry and Biochemical Engineering, Faculty of Engineering, Shizuoka University, Hamamatsu, Japan
| | - Hiroyuki Futamata
- Graduate School of Science and Technology, Shizuoka University, Hamamatsu, Japan
- Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu, Japan
- Department of Applied Chemistry and Biochemical Engineering, Faculty of Engineering, Shizuoka University, Hamamatsu, Japan
- Research Institute of Green Science and Technology, Shizuoka University, Shizuoka, Japan
| | - Yosuke Tashiro
- Graduate School of Science and Technology, Shizuoka University, Hamamatsu, Japan
- Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu, Japan
- Department of Applied Chemistry and Biochemical Engineering, Faculty of Engineering, Shizuoka University, Hamamatsu, Japan
- JST PRESTO, Kawaguchi, Japan
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Mathur S, Erickson SK, Goldberg LR, Hills S, Radin AGB, Schertzer JW. OprF functions as a latch to direct Outer Membrane Vesicle release in Pseudomonas aeruginosa. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.12.566662. [PMID: 37986865 PMCID: PMC10659412 DOI: 10.1101/2023.11.12.566662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Bacterial Outer Membrane Vesicles (OMVs) contribute to virulence, competition, immune avoidance and communication. This has led to great interest in how they are formed. To date, investigation has focused almost exclusively on what controls the initiation of OMV biogenesis. Regardless of the mechanism of initiation, all species face a similar challenge before an OMV can be released: How does the OM detach from the underlying peptidoglycan (PG) in regions that will ultimately bulge and then vesiculate? The OmpA family of OM proteins (OprF in P. aeruginosa) is widely conserved and unusually abundant in OMVs across species considering their major role in PG attachment. OmpA homologs also have the interesting ability to adopt both PG-bound (two-domain) and PG-released (one-domain) conformations. Using targeted deletion of the PG-binding domain we showed that loss of cell wall association, and not general membrane destabilization, is responsible for hypervesiculation in OprF-modified strains. We therefore propose that OprF functions as a 'latch', capable of releasing PG in regions destined to become OMVs. To test this hypothesis, we developed a protocol to assess OprF conformation in live cells and purified OMVs. While >90% of OprF proteins exist in the two-domain conformation in the OM of cells, we show that the majority of OprF in OMVs is present in the one-domain conformation. With this work, we take some of the first steps in characterizing late-stage OMV biogenesis and identify a family of proteins whose critical role can be explained by their unique ability to fold into two distinct conformations.
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Affiliation(s)
- Shrestha Mathur
- Department of Biological Sciences, Binghamton University, Binghamton, NY 13902
- Binghamton Biofilm Research Center, Binghamton University, Binghamton, NY 13902
| | - Susan K Erickson
- Department of Biological Sciences, Binghamton University, Binghamton, NY 13902
- Binghamton Biofilm Research Center, Binghamton University, Binghamton, NY 13902
| | - Leah R Goldberg
- Department of Biological Sciences, Binghamton University, Binghamton, NY 13902
- Binghamton Biofilm Research Center, Binghamton University, Binghamton, NY 13902
| | - Sonia Hills
- Department of Biological Sciences, Binghamton University, Binghamton, NY 13902
- Binghamton Biofilm Research Center, Binghamton University, Binghamton, NY 13902
| | - Abigail G B Radin
- Department of Biological Sciences, Binghamton University, Binghamton, NY 13902
- Binghamton Biofilm Research Center, Binghamton University, Binghamton, NY 13902
| | - Jeffrey W Schertzer
- Department of Biological Sciences, Binghamton University, Binghamton, NY 13902
- Binghamton Biofilm Research Center, Binghamton University, Binghamton, NY 13902
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9
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Yoshimura A, Saeki R, Nakada R, Tomimoto S, Jomori T, Suganuma K, Wakimoto T. Membrane-Vesicle-Mediated Interbacterial Communication Activates Silent Secondary Metabolite Production. Angew Chem Int Ed Engl 2023; 62:e202307304. [PMID: 37449463 DOI: 10.1002/anie.202307304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 07/12/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023]
Abstract
Most bacterial biosynthetic gene clusters (BGCs) are "silent BGCs" that are expressed poorly or not at all under normal culture conditions. However, silent BGCs, even in part, may be conditionally expressed in response to external stimuli in the original bacterial habitats. The growing knowledge of bacterial membrane vesicles (MVs) suggests that they could be promising imitators of the exogenous stimulants, especially given their functions as signaling mediators in bacterial cell-to-cell communication. Therefore, we envisioned that MVs added to bacterial cultures could activate diverse silent BGCs. Herein, we employed Burkholderia multivorans MVs, which induced silent metabolites in a wide range of bacteria in Actinobacteria, Bacteroidetes and Proteobacteria phyla. A mechanistic analysis of MV-induced metabolite production in Xenorhabdus innexi suggested that the B. multivorans MVs activate silent metabolite production by inhibiting quorum sensing in X. innexi. In turn, the X. innexi MVs carrying some MV-induced peptides suppressed the growth of B. multivorans, highlighting the interspecies communication between B. multivorans and X. innexi through MV exchange.
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Affiliation(s)
- Aya Yoshimura
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo, 060-0812, Japan
| | - Rio Saeki
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo, 060-0812, Japan
| | - Ryusuke Nakada
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo, 060-0812, Japan
| | - Shota Tomimoto
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo, 060-0812, Japan
| | - Takahiro Jomori
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo, 060-0812, Japan
- Faculty of Science, University of the Ryukyus, 1-Senbaru, Nishihara, Nakagami, Okinawa, 903-0213, Japan
| | - Keisuke Suganuma
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada, Obihiro, 080-8555, Japan
- Research Center for Global Agromedicine, Obihiro University of Agriculture and Veterinary Medicine Inada, Obihiro, 080-8555, Japan
| | - Toshiyuki Wakimoto
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo, 060-0812, Japan
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10
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Song D, Yang X, Chen Y, Hu P, Zhang Y, Zhang Y, Liang N, Xie J, Qiao L, Deng G, Chen F, Zhang J. Advances in anti-tumor based on various anaerobic bacteria and their derivatives as drug vehicles. Front Bioeng Biotechnol 2023; 11:1286502. [PMID: 37854883 PMCID: PMC10579911 DOI: 10.3389/fbioe.2023.1286502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 09/21/2023] [Indexed: 10/20/2023] Open
Abstract
Cancer therapies, such as chemotherapy and radiotherapy, are often unsatisfactory due to several limitations, including drug resistance, inability to cross biological barriers, and toxic side effects on the body. These drawbacks underscore the need for alternative treatments that can overcome these challenges and provide more effective and safer options for cancer patients. In recent years, the use of live bacteria, engineered bacteria, or bacterial derivatives to deliver antitumor drugs to specific tumor sites for controlled release has emerged as a promising therapeutic tool. This approach offers several advantages over traditional cancer therapies, including targeted drug delivery and reduced toxicity to healthy tissues. Ongoing research in this field holds great potential for further developing more efficient and personalized cancer therapies, such as E. coli, Salmonella, Listeria, and bacterial derivatives like outer membrane vesicles (OMVs), which can serve as vehicles for drugs, therapeutic proteins, or antigens. In this review, we describe the advances, challenges, and future directions of research on using live bacteria or OMVs as carriers or components derived from bacteria of delivery systems for cancer therapy.
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Affiliation(s)
- Daichen Song
- Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Department of Oncology, Shandong Lung Cancer Institute, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Xiaofan Yang
- School of Clinical Medicine, Jining Medical University, Jining, China
| | - Yanfei Chen
- Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Department of Oncology, Shandong Lung Cancer Institute, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Pingping Hu
- Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Department of Oncology, Shandong Lung Cancer Institute, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Yingying Zhang
- Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Department of Oncology, Shandong Lung Cancer Institute, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Yan Zhang
- Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Department of Oncology, Shandong Lung Cancer Institute, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Ning Liang
- Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Department of Oncology, Shandong Lung Cancer Institute, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Jian Xie
- Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Department of Oncology, Shandong Lung Cancer Institute, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Lili Qiao
- Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Department of Oncology, Shandong Lung Cancer Institute, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Guodong Deng
- Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Department of Oncology, Shandong Lung Cancer Institute, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Fangjie Chen
- Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Department of Oncology, Shandong Lung Cancer Institute, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Jiandong Zhang
- Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Department of Oncology, Shandong Lung Cancer Institute, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
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11
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Li D, Zhu L, Wang Y, Zhou X, Li Y. Bacterial outer membrane vesicles in cancer: Biogenesis, pathogenesis, and clinical application. Biomed Pharmacother 2023; 165:115120. [PMID: 37442066 DOI: 10.1016/j.biopha.2023.115120] [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: 04/30/2023] [Revised: 06/18/2023] [Accepted: 07/01/2023] [Indexed: 07/15/2023] Open
Abstract
Outer membrane vesicles (OMVs) are spherical, nano-sized particles of bilayer lipid structure secreted by Gram-negative bacteria. They contain a series of cargos from bacteria and are important messengers for communication between bacteria and their environment. OMVs play multiple roles in bacterial survival and adaptation and can affect host physiological functions and disease development by acting on host cell membranes and altering host cell signaling pathways. This paper summarizes the mechanisms of OMV genesis and the multiple roles of OMVs in the tumor microenvironment. Also, this paper discusses the prospects of OMVs for a wide range of applications in drug delivery, tumor diagnosis, and therapy.
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Affiliation(s)
- Deming Li
- Anesthesia Department, The Fourth Affiliated Hospital, China Medical University, Shenyang 110032, Liaoning, China
| | - Lisi Zhu
- Department of General surgery, The Fourth Affiliated Hospital, China Medical University, Shenyang 110032, Liaoning, China
| | - Yuxiao Wang
- Anesthesia Department, The Fourth Affiliated Hospital, China Medical University, Shenyang 110032, Liaoning, China
| | - Xiangyu Zhou
- Department of General surgery, The Fourth Affiliated Hospital, China Medical University, Shenyang 110032, Liaoning, China.
| | - Yan Li
- Department of General surgery, The Fourth Affiliated Hospital, China Medical University, Shenyang 110032, Liaoning, China.
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12
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Pin C, David L, Oswald E. Modulation of Autophagy and Cell Death by Bacterial Outer-Membrane Vesicles. Toxins (Basel) 2023; 15:502. [PMID: 37624259 PMCID: PMC10467092 DOI: 10.3390/toxins15080502] [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: 07/21/2023] [Revised: 08/11/2023] [Accepted: 08/12/2023] [Indexed: 08/26/2023] Open
Abstract
Bacteria, akin to eukaryotic cells, possess the ability to release extracellular vesicles, lipidic nanostructures that serve diverse functions in host-pathogen interactions during infections. In particular, Gram-negative bacteria produce specific vesicles with a single lipidic layer called OMVs (Outer Membrane Vesicles). These vesicles exhibit remarkable capabilities, such as disseminating throughout the entire organism, transporting toxins, and being internalized by eukaryotic cells. Notably, the cytosolic detection of lipopolysaccharides (LPSs) present at their surface initiates an immune response characterized by non-canonical inflammasome activation, resulting in pyroptotic cell death and the release of pro-inflammatory cytokines. However, the influence of these vesicles extends beyond their well-established roles, as they also profoundly impact host cell viability by directly interfering with essential cellular machinery. This comprehensive review highlights the disruptive effects of these vesicles, particularly on autophagy and associated cell death, and explores their implications for pathogen virulence during infections, as well as their potential in shaping novel therapeutic approaches.
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Affiliation(s)
- Camille Pin
- IRSD, INSERM, ENVT, INRAE, Université de Toulouse, UPS, 105 Av. de Casselardit, 31300 Toulouse, France
| | - Laure David
- IRSD, INSERM, ENVT, INRAE, Université de Toulouse, UPS, 105 Av. de Casselardit, 31300 Toulouse, France
| | - Eric Oswald
- IRSD, INSERM, ENVT, INRAE, Université de Toulouse, UPS, 105 Av. de Casselardit, 31300 Toulouse, France
- CHU Toulouse, Hôpital Purpan, Service de Bactériologie-Hygiène, Place du Docteur Baylac, 31059 Toulouse, France
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13
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Ahmed AAQ, Besio R, Xiao L, Forlino A. Outer Membrane Vesicles (OMVs) as Biomedical Tools and Their Relevance as Immune-Modulating Agents against H. pylori Infections: Current Status and Future Prospects. Int J Mol Sci 2023; 24:ijms24108542. [PMID: 37239888 DOI: 10.3390/ijms24108542] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/26/2023] [Accepted: 05/05/2023] [Indexed: 05/28/2023] Open
Abstract
Outer membrane vesicles (OMVs) are lipid-membrane-bounded nanoparticles that are released from Gram-negative bacteria via vesiculation of the outer membrane. They have vital roles in different biological processes and recently, they have received increasing attention as possible candidates for a broad variety of biomedical applications. In particular, OMVs have several characteristics that enable them to be promising candidates for immune modulation against pathogens, such as their ability to induce the host immune responses given their resemblance to the parental bacterial cell. Helicobacter pylori (H. pylori) is a common Gram-negative bacterium that infects half of the world's population and causes several gastrointestinal diseases such as peptic ulcer, gastritis, gastric lymphoma, and gastric carcinoma. The current H. pylori treatment/prevention regimens are poorly effective and have limited success. This review explores the current status and future prospects of OMVs in biomedicine with a special focus on their use as a potential candidate in immune modulation against H. pylori and its associated diseases. The emerging strategies that can be used to design OMVs as viable immunogenic candidates are discussed.
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Affiliation(s)
- Abeer Ahmed Qaed Ahmed
- Department of Molecular Medicine, Biochemistry Unit, University of Pavia, 27100 Pavia, Italy
| | - Roberta Besio
- Department of Molecular Medicine, Biochemistry Unit, University of Pavia, 27100 Pavia, Italy
| | - Lin Xiao
- School of Biomedical Engineering, Shenzhen Campus, Sun Yat-sen University, Shenzhen 518107, China
| | - Antonella Forlino
- Department of Molecular Medicine, Biochemistry Unit, University of Pavia, 27100 Pavia, Italy
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14
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Henriquez T, Falciani C. Extracellular Vesicles of Pseudomonas: Friends and Foes. Antibiotics (Basel) 2023; 12:antibiotics12040703. [PMID: 37107065 PMCID: PMC10135156 DOI: 10.3390/antibiotics12040703] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 03/31/2023] [Accepted: 04/02/2023] [Indexed: 04/07/2023] Open
Abstract
Extracellular vesicles (Evs) are small spherical vesicles capable of transporting molecules (such as proteins, nucleic acids and lipids) from one cell to another. They have been implicated in processes such as cell-to-cell communication, pathogenicity, biofilm formation and metabolism. In parallel, Evs have been proposed as interesting biotechnological tools. In recent years, antibiotic resistance has become a major problem for human health worldwide. A pathogen singled out as among the most lethal antibiotic-resistant organisms is Pseudomonas aeruginosa, an important Gram-negative bacterium that has been extensively studied for the production and characterization of Evs. Here, we describe the advances made in the last decade regarding understanding of the role of Evs in the pathogenicity of Pseudomonas. We also examine the potential of Evs for the development of new treatment strategies.
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Affiliation(s)
- Tania Henriquez
- Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
| | - Chiara Falciani
- Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
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15
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Liang X, Dai N, Sheng K, Lu H, Wang J, Chen L, Wang Y. Gut bacterial extracellular vesicles: important players in regulating intestinal microenvironment. Gut Microbes 2022; 14:2134689. [PMID: 36242585 PMCID: PMC9578468 DOI: 10.1080/19490976.2022.2134689] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Intestinal microenvironment dysbiosis is one of the major causes of diseases, such as obesity, diabetes, inflammatory bowel disease, and colon cancer. Microbiota-based strategies have excellent clinical potential in the treatment of repetitive and refractory diseases; however, the underlying regulatory mechanisms remain elusive. Identification of the internal regulatory mechanism of the gut microbiome and the interaction mechanisms involving bacteria-host is essential to achieve precise control of the gut microbiome and obtain effective clinical data. Gut bacteria-derived extracellular vesicles (GBEVs) are lipid bilayer nanoparticles secreted by the gut microbiota and are considered key players in bacteria-bacteria and bacteria-host communication. This review focusses on the role of GBEVs in gut microbiota interactions and bacteria-host communication, and the potential clinical applications of GBEVs.
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Affiliation(s)
- Xiao Liang
- School of Life Sciences, Anhui University, Hefei, China,Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei, China,Anhui Key Laboratory of Modern Biomanufacturing, Anhui University, Hefei, China
| | - Nini Dai
- School of Life Sciences, Anhui University, Hefei, China,Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei, China,Anhui Key Laboratory of Modern Biomanufacturing, Anhui University, Hefei, China
| | - Kangliang Sheng
- School of Life Sciences, Anhui University, Hefei, China,Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei, China,Anhui Key Laboratory of Modern Biomanufacturing, Anhui University, Hefei, China
| | - Hengqian Lu
- School of Life Sciences, Anhui University, Hefei, China,Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei, China,Anhui Key Laboratory of Modern Biomanufacturing, Anhui University, Hefei, China
| | - Jingmin Wang
- School of Life Sciences, Anhui University, Hefei, China,Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei, China,Anhui Key Laboratory of Modern Biomanufacturing, Anhui University, Hefei, China
| | - Liping Chen
- School of Life Sciences, Anhui University, Hefei, China,Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei, China,Anhui Key Laboratory of Modern Biomanufacturing, Anhui University, Hefei, China
| | - Yongzhong Wang
- School of Life Sciences, Anhui University, Hefei, China,Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei, China,Anhui Key Laboratory of Modern Biomanufacturing, Anhui University, Hefei, China,Institute of Physical Science and Information Technology, Anhui University, Hefei, China,CONTACT Yongzhong Wang School of Life Sciences, Anhui University, Hefei, China
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16
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Michel LV, Gaborski T. Outer Membrane Vesicles as Molecular Biomarkers for Gram-negative Sepsis: Taking Advantage of Nature's Perfect Packages. J Biol Chem 2022; 298:102483. [PMID: 36108741 PMCID: PMC9576880 DOI: 10.1016/j.jbc.2022.102483] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 07/13/2022] [Accepted: 09/08/2022] [Indexed: 11/18/2022] Open
Abstract
Sepsis is an often life-threatening response to infection, occurring when host pro-inflammatory immune responses become abnormally elevated and dysregulated. To diagnose sepsis, the patient must have a confirmed or predicted infection, as well as other symptoms associated with the pathophysiology of sepsis. However, a recent study found that a specific causal organism could not be determined in the majority (70.1%) of sepsis cases, likely due to aggressive antibiotics or localized infections. The timing of a patient's sepsis diagnosis is often predictive of their clinical outcome, underlining the need for a more definitive molecular diagnostic test. Here, we outline the advantages and challenges to using bacterial outer membrane vesicles (OMVs), nanoscale spherical buds derived from the outer membrane of Gram-negative bacteria, as a diagnostic biomarker for Gram-negative sepsis. Advantages include OMV abundance, their robustness in the presence of antibiotics, and their unique features derived from their parent cell that could allow for differentiation between bacterial species. Challenges include the rigorous purification methods required to isolate OMVs from complex biofluids and the additional need to separate OMVs from similarly-sized extracellular vesicles, which can share physical properties with OMVs.
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Affiliation(s)
- Lea Vacca Michel
- School of Chemistry and Materials Science, Rochester Institute of Technology, Rochester, New York, USA.
| | - Thomas Gaborski
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, New York, USA
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17
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Rudnicka M, Noszczyńska M, Malicka M, Kasperkiewicz K, Pawlik M, Piotrowska-Seget Z. Outer Membrane Vesicles as Mediators of Plant-Bacterial Interactions. Front Microbiol 2022; 13:902181. [PMID: 35722319 PMCID: PMC9198584 DOI: 10.3389/fmicb.2022.902181] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 05/02/2022] [Indexed: 12/05/2022] Open
Abstract
Plants have co-evolved with diverse microorganisms that have developed different mechanisms of direct and indirect interactions with their host. Recently, greater attention has been paid to a direct "message" delivery pathway from bacteria to plants, mediated by the outer membrane vesicles (OMVs). OMVs produced by Gram-negative bacteria play significant roles in multiple interactions with other bacteria within the same community, the environment, and colonized hosts. The combined forces of innovative technologies and experience in the area of plant-bacterial interactions have put pressure on a detailed examination of the OMVs composition, the routes of their delivery to plant cells, and their significance in pathogenesis, protection, and plant growth promotion. This review synthesizes the available knowledge on OMVs in the context of possible mechanisms of interactions between OMVs, bacteria, and plant cells. OMVs are considered to be potential stimulators of the plant immune system, holding potential for application in plant bioprotection.
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Affiliation(s)
| | | | - Monika Malicka
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
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18
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The tremendous biomedical potential of bacterial extracellular vesicles. Trends Biotechnol 2022; 40:1173-1194. [DOI: 10.1016/j.tibtech.2022.03.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 03/09/2022] [Accepted: 03/15/2022] [Indexed: 12/20/2022]
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19
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Outer Membrane Vesicles (OMVs) of Pseudomonas aeruginosa Provide Passive Resistance but Not Sensitization to LPS-Specific Phages. Viruses 2022; 14:v14010121. [PMID: 35062325 PMCID: PMC8778925 DOI: 10.3390/v14010121] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 01/05/2022] [Accepted: 01/06/2022] [Indexed: 02/06/2023] Open
Abstract
Outer membrane vesicles (OMVs) released from gram-negative bacteria are key elements in bacterial physiology, pathogenesis, and defence. In this study, we investigated the role of Pseudomonas aeruginosa OMVs in the anti-phage defence as well as in the potential sensitization to LPS-specific phages. Using transmission electron microscopy, virion infectivity, and neutralization assays, we have shown that both phages efficiently absorb on free vesicles and are unable to infect P. aeruginosa host. Nevertheless, the accompanying decrease in PFU titre (neutralization) was only observed for myovirus KT28 but not podovirus LUZ7. Next, we verified whether OMVs derived from wild-type PAO1 strain can sensitize the LPS-deficient mutant (Δwbpl PAO1) resistant to tested phages. The flow cytometry experiments proved a quite effective and comparable association of OMVs to Δwbpl PAO1 and wild-type PAO1; however, the growth kinetic curves and one-step growth assay revealed no sensitization event of the OMV-associated phage-resistant P. aeruginosa deletant to LPS-specific phages. Our findings for the first time identify naturally formed OMVs as important players in passive resistance (protection) of P. aeruginosa population to phages, but we disproved the hypothesis of transferring phage receptors to make resistant strains susceptible to LPS-dependent phages.
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20
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McMillan HM, Kuehn MJ. The extracellular vesicle generation paradox: a bacterial point of view. EMBO J 2021; 40:e108174. [PMID: 34636061 PMCID: PMC8561641 DOI: 10.15252/embj.2021108174] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 06/29/2021] [Accepted: 07/28/2021] [Indexed: 12/23/2022] Open
Abstract
All bacteria produce secreted vesicles that carry out a variety of important biological functions. These extracellular vesicles can improve adaptation and survival by relieving bacterial stress and eliminating toxic compounds, as well as by facilitating membrane remodeling and ameliorating inhospitable environments. However, vesicle production comes with a price. It is energetically costly and, in the case of colonizing pathogens, it elicits host immune responses, which reduce bacterial viability. This raises an interesting paradox regarding why bacteria produce vesicles and begs the question as to whether the benefits of producing vesicles outweigh their costs. In this review, we discuss the various advantages and disadvantages associated with Gram-negative and Gram-positive bacterial vesicle production and offer perspective on the ultimate score. We also highlight questions needed to advance the field in determining the role for vesicles in bacterial survival, interkingdom communication, and virulence.
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Affiliation(s)
- Hannah M McMillan
- Department of Molecular Genetics and MicrobiologyDuke UniversityDurhamNCUSA
| | - Meta J Kuehn
- Department of BiochemistryDuke UniversityDurhamNCUSA
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21
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Miyoshi Y, Saika A, Nagatake T, Matsunaga A, Kunisawa J, Katakura Y, Yamasaki-Yashiki S. Mechanisms underlying enhanced IgA production in Peyer's patch cells by membrane vesicles derived from Lactobacillus sakei. Biosci Biotechnol Biochem 2021; 85:1536-1545. [PMID: 33885732 DOI: 10.1093/bbb/zbab065] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 04/05/2021] [Indexed: 12/20/2022]
Abstract
We analyzed the mechanisms underlying enhanced IgA production in the cells of Peyer's patch cells via membrane vesicles derived from Lactobacillus sakei subsp. sakei NBRC 15893. Depletion of CD11c+ cells from Peyer's patch cells suppressed the enhanced IgA production mediated by membrane vesicles. Meanwhile, the stimulation of bone-marrow-derived dendritic cells with membrane vesicles increased gene expression of inducible nitric oxide synthase, retinaldehyde dehydrogenase 2, and several inflammatory cytokines. The production of nitric oxide and interleukin (IL)-6 by membrane vesicle stimulation was induced via Toll-like receptor 2 on bone marrow-derived dendritic cells. Inhibition of inducible nitric oxide synthase and retinaldehyde dehydrogenase 2, as well as the neutralization of IL-6 in Peyer's patch cells, suppressed the enhanced IgA production by membrane vesicle stimulation. Hence, nitric oxide, retinoic acid, and IL-6 induced by membrane vesicles play crucial roles in the enhanced IgA production elicited by membrane vesicles in Peyer's patch cells.
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Affiliation(s)
- Yuki Miyoshi
- Chemistry, Materials and Bioengineering Major, Graduate School of Science and Engineering, Kansai University, Suita, Osaka, Japan.,Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research and Laboratory of Gut Environmental System, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
| | - Azusa Saika
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research and Laboratory of Gut Environmental System, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan.,Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
| | - Takahiro Nagatake
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research and Laboratory of Gut Environmental System, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
| | - Ayu Matsunaga
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research and Laboratory of Gut Environmental System, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan.,Department of Food and Life Science, School of Life and Environmental Science, Azabu University, Sagamihara, Kanagawa, Japan
| | - Jun Kunisawa
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research and Laboratory of Gut Environmental System, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan.,Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
| | - Yoshio Katakura
- Department of Life Science and Biotechnology, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka, Japan
| | - Shino Yamasaki-Yashiki
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research and Laboratory of Gut Environmental System, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan.,Department of Life Science and Biotechnology, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka, Japan
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22
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Villard A, Boursier J, Andriantsitohaina R. Microbiota-derived extracellular vesicles and metabolic syndrome. Acta Physiol (Oxf) 2021; 231:e13600. [PMID: 33319492 DOI: 10.1111/apha.13600] [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: 09/08/2020] [Revised: 11/23/2020] [Accepted: 12/09/2020] [Indexed: 12/13/2022]
Abstract
AIM Metabolic syndrome is a major health problem concerning approximately 25% of worldwide population. Metabolic syndrome regroups a cluster of five metabolic abnormalities predisposing to Type 2 Diabetes mellitus. Dysbiotic gut microbiota is accompanied by an increase of both intestinal permeability and pathogen-associated molecular patterns translocation into blood circulation to induce metabolic endotoxemia responsible for the low-grade systemic inflammation and insulin resistance in metabolic syndrome. Among pathogen-associated molecular patterns, bacterial extracellular vesicles are gaining growing attention. The latter are produced by eukaryotic and prokaryotic cells and are vectors of communication between gut microbiota and its host The present review brings evidence to the importance of the control of the balance between the different subsets of gut microbiota in the development of metabolic diseases including metabolic syndrome. RESULTS The ability of bacteria, including gut bacteria, to release extracellular vesicles implicated in host metabolic homeostasis is highlighted with their plethora of actions on intestinal barrier, inflammation and insulin resistance. CONCLUSION Bacterial extracellular vesicles can be considered as key players in the pathophysiological of metabolic diseases and may represent an interesting strategy for specific manipulations of microbiome for promoting host health.
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Affiliation(s)
- Alexandre Villard
- INSERM UMR1063 Stress Oxydant et Pathologies Métaboliques Faculté de Santé Université d’AngersUniversité Bretagne Loire Angers France
- Hémodynamique Interaction Fibrose et Invasivité Tumorales Hépatiques (HIFIH) Angers France
| | - Jérôme Boursier
- Hémodynamique Interaction Fibrose et Invasivité Tumorales Hépatiques (HIFIH) Angers France
| | - Ramaroson Andriantsitohaina
- INSERM UMR1063 Stress Oxydant et Pathologies Métaboliques Faculté de Santé Université d’AngersUniversité Bretagne Loire Angers France
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23
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Li Y, Yang Y, Feng Y, Pu J, Hou LA. Combined effects of Pseudomonas quinolone signal-based quorum quenching and graphene oxide on the mitigation of biofouling and improvement of the application potential for the thin-film composite membrane. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 760:143348. [PMID: 33162137 DOI: 10.1016/j.scitotenv.2020.143348] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 10/20/2020] [Accepted: 10/20/2020] [Indexed: 06/11/2023]
Abstract
Biofouling caused by the growth of the biofilm is the main bottleneck that limits the effective operation of thin-film composite (TFC) membrane in the forward osmosis (FO) process. This study investigated the combined effects of graphene oxide (GO) immobilized thin-film nanocomposite (TFN-S) membrane and Pseudomonas quinolone signal (PQS)-based quorum quenching on biofouling mitigation, especially under the operation of pressure-retarded osmosis (PRO) mode, and the influence of methyl anthranilate (MA) inhibitor on the composition and structure of biofilm was also evaluated. Synthetic wastewater was used as the feed solution, in which the model strain Pseudomonas aeruginosa was added to simulate biofouling. The results showed that GO modification and MA addition both efficiently mitigated flux decline and EPS secretion, but the interference of PQS pathway on biofouling control was better than GO embedding. TFN-S membrane with MA addition exhibited superior anti-biofouling performance based on the combined effects of GO and MA. The alleviated concentration polarization and enhanced hydrophilicity of the TFN-S membrane reduced the flux decline in the early stage. Additionally, the antibacterial property of GO inhibited the viability of the attached bacteria (under PRO mode) and MA further mitigated the EPS secretion and biofilm development in the later stage. In the presence of PQS inhibitor MA, live/total cells ratio was 15% and 13% higher than that of TFC membrane in FO and PRO modes, respectively. Furthermore, exogenous addition of MA led to a relatively loose biofilm structure, resulting in high membrane permeability in the biofouling formation process.
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Affiliation(s)
- Yuan Li
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
| | - Yu Yang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
| | - Yuruo Feng
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
| | - Jian Pu
- Institute for Future Initiatives, The University of Tokyo, Tokyo 113-8654, Japan.
| | - Li-An Hou
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China; Xi'an High-Tech Institute, Xi'an 710025, China.
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24
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Seike S, Kobayashi H, Ueda M, Takahashi E, Okamoto K, Yamanaka H. Outer Membrane Vesicles Released From Aeromonas Strains Are Involved in the Biofilm Formation. Front Microbiol 2021; 11:613650. [PMID: 33488556 PMCID: PMC7817658 DOI: 10.3389/fmicb.2020.613650] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 12/07/2020] [Indexed: 12/11/2022] Open
Abstract
Aeromonas spp. are Gram-negative rod-shaped bacteria ubiquitously distributed in diverse water sources. Several Aeromonas spp. are known as human and fish pathogens. Recently, attention has been focused on the relationship between bacterial biofilm formation and pathogenicity or drug resistance. However, there have been few reports on biofilm formation by Aeromonas. This study is the first to examine the in vitro formation and components of the biofilm of several Aeromonas clinical and environmental strains. A biofilm formation assay using 1% crystal violet on a polystyrene plate revealed that most Aeromonas strains used in this study formed biofilms but one strain did not. Analysis of the basic components contained in the biofilms formed by Aeromonas strains confirmed that they contained polysaccharides containing GlcNAc, extracellular nucleic acids, and proteins, as previously reported for the biofilms of other bacterial species. Among these components, we focused on several proteins fractionated by SDS-PAGE and determined their amino acid sequences. The results showed that some proteins existing in the Aeromonas biofilms have amino acid sequences homologous to functional proteins present in the outer membrane of Gram-negative bacteria. This result suggests that outer membrane components may affect the biofilm formation of Aeromonas strains. It is known that Gram-negative bacteria often release extracellular membrane vesicles from the outer membrane, so we think that the outer membrane-derived proteins found in the Aeromonas biofilms may be derived from such membrane vesicles. To examine this idea, we next investigated the ability of Aeromonas strains to form outer membrane vesicles (OMVs). Electron microscopic analysis revealed that most Aeromonas strains released OMVs outside the cells. Finally, we purified OMVs from several Aeromonas strains and examined their effect on the biofilm formation. We found that the addition of OMVs dose-dependently promoted biofilm formation, except for one strain that did not form biofilms. These results suggest that the OMVs released from the bacterial cells are closely related to the biofilm formation of Aeromonas strains.
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Affiliation(s)
- Soshi Seike
- Laboratory of Molecular Microbiological Science, Faculty of Pharmaceutical Sciences, Hiroshima International University, Hiroshima, Japan
| | - Hidetomo Kobayashi
- Laboratory of Molecular Microbiological Science, Faculty of Pharmaceutical Sciences, Hiroshima International University, Hiroshima, Japan
| | - Mitsunobu Ueda
- Laboratory of Molecular Microbiological Science, Faculty of Pharmaceutical Sciences, Hiroshima International University, Hiroshima, Japan
| | - Eizo Takahashi
- Laboratory of Medical Microbiology, Department of Health Pharmacy, Yokohama University of Pharmacy, Yokohama, Japan
| | - Keinosuke Okamoto
- Collaborative Research Center of Okayama University for Infectious Diseases in India, National Institute of Cholera and Enteric Diseases, Kolkata, India
| | - Hiroyasu Yamanaka
- Laboratory of Molecular Microbiological Science, Faculty of Pharmaceutical Sciences, Hiroshima International University, Hiroshima, Japan
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25
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Extracellular products-mediated interspecific interaction between Pseudomonas aeruginosa and Escherichia coli. J Microbiol 2020; 59:29-40. [PMID: 33355890 DOI: 10.1007/s12275-021-0478-0] [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: 09/16/2020] [Revised: 10/29/2020] [Accepted: 11/11/2020] [Indexed: 10/22/2022]
Abstract
The Gram-negative pathogen Pseudomonas aeruginosa adopts several elaborate strategies to colonize a wide range of natural or clinical niches and to overcome the neighboring bacterial competitors in polymicrobial communities. However, the relationship and interaction mechanism of P. aeruginosa with other bacterial pathogens remains largely unexplored. Here we explore the interaction dynamics of P. aeruginosa and Escherichia coli, which frequently coinfect the lungs of immunocompromised hosts, by using a series of on-plate proximity assays and RNA-sequencing. We show that the extracellular products of P. aeruginosa can inhibit the growth of neighboring E. coli and induce a large-scale of transcriptional reprogramming of E. coli, especially in terms of cellular respiration-related primary metabolisms and membrane components. In contrast, the presence of E. coli has no significant effect on the growth of P. aeruginosa in short-term culture, but causes a dysregulated expression of genes positively controlled by the quorum-sensing (QS) system of P. aeruginosa during subsequent pairwise culture. We further demonstrate that the divergent QS-regulation of P. aeruginosa may be related to the function of the transcriptional regulator PqsR, which can be enhanced by E. coli culture supernatant to increase the pyocyanin production by P. aeruginosa in the absence of the central las-QS system. Moreover, the extracellular products of E. coli promote the proliferation and lethality of P. aeruginosa in infecting the Caenorhabditis elegans model. The current study provides a general characterization of the extracellular products-mediated interactions between P. aeruginosa and E. coli, and may facilitate the understanding of polymicrobial infections.
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26
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Wang R, Ding W, Long L, Lan Y, Tong H, Saha S, Wong YH, Sun J, Li Y, Zhang W, Qian PY. Exploring the Influence of Signal Molecules on Marine Biofilms Development. Front Microbiol 2020; 11:571400. [PMID: 33281767 PMCID: PMC7691533 DOI: 10.3389/fmicb.2020.571400] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 10/27/2020] [Indexed: 01/10/2023] Open
Abstract
Microbes respond to environmental stimuli through complicated signal transduction systems. In microbial biofilms, because of complex multiple species interactions, signals transduction systems are of an even higher complexity. Here, we performed a signal-molecule-treatment experiment to study the role of different signal molecules, including N-hexanoyl-L-homoserine lactone (C6-HSL), N-dodecanoyl-L-homoserine lactone (C12-HSL), Pseudomonas quinolone signal (PQS), and cyclic di-GMP (c-di-GMP), in the development of marine biofilms. Comparative metagenomics suggested a distinctive influence of these molecules on the microbial structure and function of multi-species biofilm communities in its developing stage. The PQS-treated biofilms shared the least similarity with the control and initial biofilms. The role of PQS in biofilm development was further explored experimentally with the strain Erythrobacter sp. HKB8 isolated from marine biofilms. Comparative transcriptomic analysis showed that 314 genes, such as those related to signal transduction and biofilm formation, were differentially expressed in the untreated and PQS-treated Erythrobacter sp. HKB8 biofilms. Our study demonstrated the different roles of signal molecules in marine biofilm development. In particular, the PQS-based signal transduction system, which is frequently detected in marine biofilms, may play an important role in regulating microbe-microbe interactions and the assemblage of biofilm communities.
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Affiliation(s)
- Ruojun Wang
- Department of Ocean Science, Hong Kong University of Science and Technology, Kowloon, Hong Kong.,Hong Kong Branch of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Hong Kong University of Science and Technology, Kowloon, Hong Kong
| | - Wei Ding
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Lexin Long
- Department of Ocean Science, Hong Kong University of Science and Technology, Kowloon, Hong Kong.,Hong Kong Branch of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Hong Kong University of Science and Technology, Kowloon, Hong Kong.,Institute for Advanced Study, Shenzhen University, Shenzhen, China
| | - Yi Lan
- Department of Ocean Science, Hong Kong University of Science and Technology, Kowloon, Hong Kong.,Hong Kong Branch of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Hong Kong University of Science and Technology, Kowloon, Hong Kong
| | - Haoya Tong
- Department of Ocean Science, Hong Kong University of Science and Technology, Kowloon, Hong Kong.,Hong Kong Branch of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Hong Kong University of Science and Technology, Kowloon, Hong Kong
| | - Subhasish Saha
- Department of Ocean Science, Hong Kong University of Science and Technology, Kowloon, Hong Kong
| | - Yue Him Wong
- Institute for Advanced Study, Shenzhen University, Shenzhen, China
| | - Jin Sun
- Department of Ocean Science, Hong Kong University of Science and Technology, Kowloon, Hong Kong.,Hong Kong Branch of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Hong Kong University of Science and Technology, Kowloon, Hong Kong
| | - Yongxin Li
- Department of Ocean Science, Hong Kong University of Science and Technology, Kowloon, Hong Kong.,The Swire Institute of Marine Science, The University of Hong Kong, Pokfulam, Hong Kong.,The Department of Chemistry, The University of Hong Kong, Pokfulam, Hong Kong
| | - Weipeng Zhang
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Pei-Yuan Qian
- Department of Ocean Science, Hong Kong University of Science and Technology, Kowloon, Hong Kong.,Hong Kong Branch of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Hong Kong University of Science and Technology, Kowloon, Hong Kong
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27
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Lima S, Matinha-Cardoso J, Tamagnini P, Oliveira P. Extracellular Vesicles: An Overlooked Secretion System in Cyanobacteria. Life (Basel) 2020; 10:E129. [PMID: 32751844 PMCID: PMC7459746 DOI: 10.3390/life10080129] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 07/24/2020] [Accepted: 07/29/2020] [Indexed: 02/07/2023] Open
Abstract
In bacteria, the active transport of material from the interior to the exterior of the cell, or secretion, represents a very important mechanism of adaptation to the surrounding environment. The secretion of various types of biomolecules is mediated by a series of multiprotein complexes that cross the bacterial membrane(s), each complex dedicated to the secretion of specific substrates. In addition, biological material may also be released from the bacterial cell in the form of vesicles. Extracellular vesicles (EVs) are bilayered, nanoscale structures, derived from the bacterial cell envelope, which contain membrane components as well as soluble products. In cyanobacteria, the knowledge regarding EVs is lagging far behind compared to what is known about, for example, other Gram-negative bacteria. Here, we present a summary of the most important findings regarding EVs in Gram-negative bacteria, discussing aspects of their composition, formation processes and biological roles, and highlighting a number of technological applications tested. This lays the groundwork to raise awareness that the release of EVs by cyanobacteria likely represents an important, and yet highly disregarded, survival strategy. Furthermore, we hope to motivate future studies that can further elucidate the role of EVs in cyanobacterial cell biology and physiology.
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Affiliation(s)
- Steeve Lima
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, R. Alfredo Allen, 208, 4200-135 Porto, Portugal; (S.L.); (J.M.-C.); (P.T.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, R. Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - Jorge Matinha-Cardoso
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, R. Alfredo Allen, 208, 4200-135 Porto, Portugal; (S.L.); (J.M.-C.); (P.T.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, R. Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - Paula Tamagnini
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, R. Alfredo Allen, 208, 4200-135 Porto, Portugal; (S.L.); (J.M.-C.); (P.T.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, R. Alfredo Allen, 208, 4200-135 Porto, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, Edifício FC4, 4169-007 Porto, Portugal
| | - Paulo Oliveira
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, R. Alfredo Allen, 208, 4200-135 Porto, Portugal; (S.L.); (J.M.-C.); (P.T.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, R. Alfredo Allen, 208, 4200-135 Porto, Portugal
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28
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Knoke LR, Abad Herrera S, Götz K, Justesen BH, Günther Pomorski T, Fritz C, Schäkermann S, Bandow JE, Aktas M. Agrobacterium tumefaciens Small Lipoprotein Atu8019 Is Involved in Selective Outer Membrane Vesicle (OMV) Docking to Bacterial Cells. Front Microbiol 2020; 11:1228. [PMID: 32582124 PMCID: PMC7296081 DOI: 10.3389/fmicb.2020.01228] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 05/14/2020] [Indexed: 12/02/2022] Open
Abstract
Outer membrane vesicles (OMVs), released from Gram-negative bacteria, have been attributed to intra- and interspecies communication and pathogenicity in diverse bacteria. OMVs carry various components including genetic material, toxins, signaling molecules, or proteins. Although the molecular mechanism(s) of cargo delivery is not fully understood, recent studies showed that transfer of the OMV content to surrounding cells is mediated by selective interactions. Here, we show that the phytopathogen Agrobacterium tumefaciens, the causative agent of crown gall disease, releases OMVs, which attach to the cell surface of various Gram-negative bacteria. The OMVs contain the conserved small lipoprotein Atu8019. An atu8019-deletion mutant produced wildtype-like amounts of OMVs with a subtle but reproducible reduction in cell-attachment. Otherwise, loss of atu8019 did not alter growth, susceptibility against cations or antibiotics, attachment to plant cells, virulence, motility, or biofilm formation. In contrast, overproduction of Atu8019 in A. tumefaciens triggered cell aggregation and biofilm formation. Localization studies revealed that Atu8019 is surface exposed in Agrobacterium cells and in OMVs supporting a role in cell adhesion. Purified Atu8019 protein reconstituted into liposomes interacted with model membranes and with the surface of several Gram-negative bacteria. Collectively, our data suggest that the small lipoprotein Atu8019 is involved in OMV docking to specific bacteria.
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Affiliation(s)
- Lisa Roxanne Knoke
- Faculty of Biology and Biotechnology, Department of Microbial Biology, Ruhr University Bochum, Bochum, Germany
| | - Sara Abad Herrera
- Faculty of Chemistry and Biochemistry, Department of Molecular Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Katrin Götz
- Faculty of Biology and Biotechnology, Department of Microbial Biology, Ruhr University Bochum, Bochum, Germany
| | - Bo Højen Justesen
- Faculty of Chemistry and Biochemistry, Department of Molecular Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Thomas Günther Pomorski
- Faculty of Chemistry and Biochemistry, Department of Molecular Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Christiane Fritz
- Faculty of Biology and Biotechnology, Department of Microbial Biology, Ruhr University Bochum, Bochum, Germany
| | - Sina Schäkermann
- Faculty of Biology and Biotechnology, Department of Applied Microbiology, Ruhr University Bochum, Bochum, Germany
| | - Julia Elisabeth Bandow
- Faculty of Biology and Biotechnology, Department of Applied Microbiology, Ruhr University Bochum, Bochum, Germany
| | - Meriyem Aktas
- Faculty of Biology and Biotechnology, Department of Microbial Biology, Ruhr University Bochum, Bochum, Germany
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29
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Vitse J, Devreese B. The Contribution of Membrane Vesicles to Bacterial Pathogenicity in Cystic Fibrosis Infections and Healthcare Associated Pneumonia. Front Microbiol 2020; 11:630. [PMID: 32328052 PMCID: PMC7160670 DOI: 10.3389/fmicb.2020.00630] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 03/20/2020] [Indexed: 01/23/2023] Open
Abstract
Almost all bacteria secrete spherical membranous nanoparticles, also referred to as membrane vesicles (MVs). A variety of MV types exist, ranging from 20 to 400 nm in diameter, each with their own formation routes. The most well-known vesicles are the outer membrane vesicles (OMVs) which are formed by budding from the outer membrane in Gram-negative bacteria. Recently, other types of MVs have been discovered and described, including outer-inner membrane vesicles (OIMVs) and cytoplasmic membrane vesicles (CMVs). The former are mainly formed by a process termed endolysin-triggered cell lysis in Gram-negative bacteria, the latter are formed by Gram-positive bacteria. MVs carry a wide range of cargo, such as nucleic acids, virulence factors and antibiotic resistance components. Moreover, they are involved in a multitude of biological processes that increase bacterial pathogenicity. In this review, we discuss the functional aspects of MVs secreted by bacteria associated with cystic fibrosis and nosocomial pneumonia. We mainly focus on how MVs are involved in virulence, antibiotic resistance, biofilm development and inflammation that consequently aid these bacterial infections.
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Affiliation(s)
- Jolien Vitse
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium
| | - Bart Devreese
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium
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30
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Caruana JC, Walper SA. Bacterial Membrane Vesicles as Mediators of Microbe - Microbe and Microbe - Host Community Interactions. Front Microbiol 2020; 11:432. [PMID: 32265873 PMCID: PMC7105600 DOI: 10.3389/fmicb.2020.00432] [Citation(s) in RCA: 137] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 03/02/2020] [Indexed: 01/18/2023] Open
Abstract
Bacterial membrane vesicles are proteoliposomal nanoparticles produced by both Gram-negative and Gram-positive bacteria. As they originate from the outer surface of the bacteria, their composition and content is generally similar to the parent bacterium’s membrane and cytoplasm. However, there is ample evidence that preferential packaging of proteins, metabolites, and toxins into vesicles does occur. Incorporation into vesicles imparts a number of benefits to the cargo, including protection from degradation by other bacteria, the host organism, or environmental factors, maintenance of a favorable microenvironment for enzymatic activity, and increased potential for long-distance movement. This enables vesicles to serve specialized functions tailored to changing or challenging environments, particularly in regard to microbial community interactions including quorum sensing, biofilm formation, antibiotic resistance, antimicrobial peptide expression and deployment, and nutrient acquisition. Additionally, based on their contents, vesicles play crucial roles in host-microbe interactions as carriers of virulence factors and other modulators of host cell function. Here, we discuss recent advances in our understanding of how vesicles function as signals both within microbial communities and between pathogenic or commensal microbes and their mammalian hosts. We also highlight a few areas that are currently ripe for additional research, including the mechanisms of selective cargo packaging into membrane vesicles and of cargo processing once it enters mammalian host cells, the function of vesicles in transfer of nucleic acids among bacteria, and the possibility of engineering commensal bacteria to deliver cargo of interest to mammalian hosts in a controlled manner.
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Affiliation(s)
- Julie C Caruana
- American Society for Engineering Education, Washington, DC, United States
| | - Scott A Walper
- US Naval Research Laboratory, Center for Biomolecular Science and Engineering, Washington, DC, United States
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31
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Reen FJ, McGlacken GP, O'Gara F. The expanding horizon of alkyl quinolone signalling and communication in polycellular interactomes. FEMS Microbiol Lett 2019; 365:4953739. [PMID: 29718276 DOI: 10.1093/femsle/fny076] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 03/25/2018] [Indexed: 02/07/2023] Open
Abstract
Population dynamics within natural ecosystems is underpinned by microbial diversity and the heterogeneity of host-microbe and microbe-microbe interactions. Small molecule signals that intersperse between species have been shown to govern many virulence-related processes in established and emerging pathogens. Understanding the capacity of microbes to decode diverse languages and adapt to the presence of 'non-self' cells will provide an important new direction to the understanding of the 'polycellular' interactome. Alkyl quinolones (AQs) have been described in the ESKAPE pathogen Pseudomonas aeruginosa, the primary agent associated with mortality in patients with cystic fibrosis and the third most prevalent nosocomial pathogen worldwide. The role of these molecules in governing the physiology and virulence of P. aeruginosa and other pathogens has received considerable attention, while a role in interspecies and interkingdom communication has recently emerged. Herein we discuss recent advances in our understanding of AQ signalling and communication in the context of microbe-microbe and microbe-host interactions. The integrated knowledge from these systems-based investigations will facilitate the development of new therapeutics based on the AQ framework that serves to disarm the pathogenesis of P. aeruginosa and competing pathogens.
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Affiliation(s)
- F Jerry Reen
- School of Microbiology, University College Cork, Cork, Ireland
| | - Gerard P McGlacken
- School of Chemistry and Analytical & Biological Chemistry Research Facility (ABCRF), University College Cork, Ireland
| | - Fergal O'Gara
- BIOMERIT Research Centre, School of Microbiology, University College Cork, Cork, Ireland
- Human Microbiome Programme, School of Pharmacy and Biomedical Sciences, Curtin Health Innovation Research Institute, Curtin University, Perth, WA 6102, USA
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32
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Tashiro Y, Takaki K, Futamata H. Targeted delivery using membrane vesicles in prokaryotes. Biophys Physicobiol 2019; 16:114-120. [PMID: 31131182 PMCID: PMC6530884 DOI: 10.2142/biophysico.16.0_114] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 03/20/2019] [Indexed: 12/16/2022] Open
Abstract
Membrane vesicles (MVs) are lumen-containing spheres of lipid bilayers secreted by all prokaryotes into the extracellular milieu. They have multifunctional roles in stress response, virulence transfer, biofilm formation, and microbial interactions. Remarkably, MVs contain various components, including lytic enzymes, genetic materials, and hydrophobic signals, at high concentrations and transfer them effectively to the target microbial cells. Therefore, MVs act as carriers for bactericidal effects, horizontal gene transfer, and quorum sensing. Although the purpose of secreted MVs remains unclear, recent reports have provided evidence that MVs selectively interact with microbial cells in order to transfer their content to the target species. Herein, we review microbial interactions using MVs and discuss MV-mediated selective delivery of their content to target microbial cells.
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Affiliation(s)
- Yosuke Tashiro
- Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan.,Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
| | - Kotaro Takaki
- Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
| | - Hiroyuki Futamata
- Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan.,Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan.,Research Institute of Green Science and Technology, Shizuoka University, Shizuoka 422-8529, Japan
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33
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Eberlein C, Starke S, Doncel ÁE, Scarabotti F, Heipieper HJ. Quantification of outer membrane vesicles: a potential tool to compare response in Pseudomonas putida KT2440 to stress caused by alkanols. Appl Microbiol Biotechnol 2019; 103:4193-4201. [PMID: 30972462 DOI: 10.1007/s00253-019-09812-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 03/29/2019] [Accepted: 03/31/2019] [Indexed: 11/29/2022]
Abstract
The bacterial release of outer membrane vesicles (OMVs) is an important physiological mechanism of Gram-negative bacteria playing numerous key roles. One function of the release of OMVs is related to an increase in surface hydrophobicity. This phenomenon initiates biofilm formation, making bacteria more tolerant to environmental stressors. Recently, it was qualitatively shown for Pseudomonas putida that vesicle formation plays a crucial role in multiple stress responses. Yet, no quantification of OMVs for certain stress scenarios has been conducted. In this study, it is shown that the quantification of OMVs can serve as a simple and feasible tool, which allows a comparison of vesicle yields for different experimental setups, cell densities, and environmental stressors. Moreover, the obtained results provide insight to the underlying mechanism of vesicle formation as it was observed that n-alkanols, with a chain length of C7 and longer, caused a distinct and steep increase in vesiculation (12-19-fold), compared to shorter chain n-alkanols (2-4-fold increase).
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Affiliation(s)
- Christian Eberlein
- Department of Environmental Biotechnology, Helmholtz Centre for Environmental Research - UFZ, Permoserstr. 15, 04318, Leipzig, Germany
| | - Stephan Starke
- Department of Environmental Biotechnology, Helmholtz Centre for Environmental Research - UFZ, Permoserstr. 15, 04318, Leipzig, Germany
| | - Álvaro Escobar Doncel
- Department of Environmental Biotechnology, Helmholtz Centre for Environmental Research - UFZ, Permoserstr. 15, 04318, Leipzig, Germany
| | - Francesco Scarabotti
- Department of Environmental Biotechnology, Helmholtz Centre for Environmental Research - UFZ, Permoserstr. 15, 04318, Leipzig, Germany
| | - Hermann J Heipieper
- Department of Environmental Biotechnology, Helmholtz Centre for Environmental Research - UFZ, Permoserstr. 15, 04318, Leipzig, Germany.
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34
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Toyofuku M, Nomura N. What will membrane vesicles (MVs) bring to bacterial communication? Microbes Environ 2019; 32:185-187. [PMID: 28954979 PMCID: PMC5606687 DOI: 10.1264/jsme2.me3203rh] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- Masanori Toyofuku
- Department of Life and Environmental Sciences, University of Tsukuba
| | - Nobuhiko Nomura
- Department of Life and Environmental Sciences, University of Tsukuba
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35
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Lin J, Cheng J, Wang Y, Shen X. The Pseudomonas Quinolone Signal (PQS): Not Just for Quorum Sensing Anymore. Front Cell Infect Microbiol 2018; 8:230. [PMID: 30023354 PMCID: PMC6039570 DOI: 10.3389/fcimb.2018.00230] [Citation(s) in RCA: 144] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 06/18/2018] [Indexed: 12/26/2022] Open
Abstract
The Pseudomonas quinolone signal (PQS) has been studied primarily in the context of its role as a quorum-sensing signaling molecule. Recent data suggest, however, that this molecule may also function to mediate iron acquisition, cytotoxicity, outer-membrane vesicle biogenesis, or to exert host immune modulatory activities.
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Affiliation(s)
- Jinshui Lin
- Shaanxi Engineering and Technological Research Center for Conservation and Utilization of Regional Biological Resources, Yan'an University, Yan'an, China.,College of Life Sciences, Yan'an University, Yan'an, China
| | - Juanli Cheng
- Shaanxi Engineering and Technological Research Center for Conservation and Utilization of Regional Biological Resources, Yan'an University, Yan'an, China.,College of Life Sciences, Yan'an University, Yan'an, China
| | - Yao Wang
- Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, China.,State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, China
| | - Xihui Shen
- Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, China.,State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, China
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36
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Horspool AM, Schertzer JW. Reciprocal cross-species induction of outer membrane vesicle biogenesis via secreted factors. Sci Rep 2018; 8:9873. [PMID: 29959355 PMCID: PMC6026191 DOI: 10.1038/s41598-018-28042-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 06/14/2018] [Indexed: 11/09/2022] Open
Abstract
Delivery of cargo to target cells is fundamental to bacterial competitiveness. One important but poorly understood system, ubiquitous among Gram-negative organisms, involves packaging cargo into outer membrane vesicles (OMVs). These biological nanoparticles are involved in processes ranging from toxin delivery to cell-cell communication. Despite this, we know comparatively little about how OMVs are formed. Building upon the discovery that the Pseudomonas Quinolone Signal (PQS) stimulates OMV biogenesis in Pseudomonas aeruginosa, we proposed a model where PQS interacts with the outer membrane to induce curvature and ultimately OMV formation. Though this model is well supported in P. aeruginosa, it remained unclear whether other organisms produce similar compounds. Here we describe the development of a tightly controlled experimental system to test the interaction of bacterially-produced factors with target cells. Using this system, we show that multiple species respond to PQS by increasing OMV formation, that PQS accumulates in the induced vesicles, and that other bacteria secrete OMV-promoting factors. Analysis of induced vesicles indicates that recipient-mediated mechanisms exist to control vesicle size and that relatedness to the producer organism can dictate susceptibility to OMV-inducing compounds. This work provides evidence that small molecule induced OMV biogenesis is a widely conserved process and that cross-talk between systems may influence OMV production in neighboring bacteria.
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Affiliation(s)
- Alexander M Horspool
- Department of Biological Sciences, Binghamton University, Binghamton, New York, USA
- Binghamton Biofilm Research Center, Binghamton University, Binghamton, New York, USA
| | - Jeffrey W Schertzer
- Department of Biological Sciences, Binghamton University, Binghamton, New York, USA.
- Binghamton Biofilm Research Center, Binghamton University, Binghamton, New York, USA.
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37
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Yu YJ, Wang XH, Fan GC. Versatile effects of bacterium-released membrane vesicles on mammalian cells and infectious/inflammatory diseases. Acta Pharmacol Sin 2018; 39:514-533. [PMID: 28858295 PMCID: PMC5888691 DOI: 10.1038/aps.2017.82] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 05/10/2017] [Indexed: 01/18/2023] Open
Abstract
Gram-negative bacterium-released outer-membrane vesicles (OMVs) and Gram-positive bacterium-released membrane vesicles (MVs) share significant similarities with mammalian cell-derived MVs (eg, microvesicles and exosomes) in terms of structure and their biological activities. Recent studies have revealed that bacterial OMVs/MVs could (1) interact with immune cells to regulate inflammatory responses, (2) transport virulence factors (eg, enzymes, DNA and small RNAs) to host cells and result in cell injury, (3) enhance barrier function by stimulating the expression of tight junction proteins in intestinal epithelial cells, (4) upregulate the expression of endothelial cell adhesion molecules, and (5) serve as natural nanocarriers for immunogenic antigens, enzyme support and drug delivery. In addition, OMVs/MVs can enter the systemic circulation and induce a variety of immunological and metabolic responses. This review highlights the recent advances in the understanding of OMV/MV biogenesis and their compositional remodeling. In addition, interactions between OMVs/MVs and various types of mammalian cells (ie, immune cells, epithelial cells, and endothelial cells) and their pathological/preventive effects on infectious/inflammatory diseases are summarized. Finally, methods for engineering OMVs/MVs and their therapeutic potential are discussed.
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Affiliation(s)
- You-jiang Yu
- Medical College of Yangzhou Polytechnic College, Yangzhou 225009, China
| | - Xiao-hong Wang
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Guo-Chang Fan
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
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38
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Abstract
Pseudomonas aeruginosa, a Gram-negative bacterium, is characterized by its versatility that enables persistent survival under adverse conditions. It can grow on diverse energy sources and readily acquire resistance to antimicrobial agents. As an opportunistic human pathogen, it also causes chronic infections inside the anaerobic mucus airways of cystic fibrosis patients. As a strict respirer, P. aeruginosa can grow by anaerobic nitrate ( [Formula: see text] ) respiration. Nitric oxide (NO) produced as an intermediate during anaerobic respiration exerts many important effects on the biological characteristics of P. aeruginosa. This review provides information regarding (i) how P. aeruginosa grows by anaerobic respiration, (ii) mechanisms by which NO is produced under such growth, and (iii) bacterial adaptation to NO. We also review the clinical relevance of NO in the fitness of P. aeruginosa and the use of NO as a potential therapeutic for treating P. aeruginosa infection.
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39
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Volgers C, Savelkoul PHM, Stassen FRM. Gram-negative bacterial membrane vesicle release in response to the host-environment: different threats, same trick? Crit Rev Microbiol 2017; 44:258-273. [PMID: 28741415 DOI: 10.1080/1040841x.2017.1353949] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Bacteria are confronted with a multitude of stressors when occupying niches within the host. These stressors originate from host defense mechanisms, other bacteria during niche competition or result from physiological challenges such as nutrient limitation. To counteract these stressors, bacteria have developed a stress-induced network to mount the adaptations required for survival. These stress-induced adaptations include the release of membrane vesicles from the bacterial envelope. Membrane vesicles can provide bacteria with a plethora of immediate and ultimate benefits for coping with environmental stressors. This review addresses how membrane vesicles aid Gram-negative bacteria to cope with host-associated stress factors, focusing on vesicle biogenesis and the physiological functions. As many of the pathways, that drive vesicle biogenesis, confer we propose that shedding of membrane vesicles by Gram-negative bacteria entails an integrated part of general stress responses.
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Affiliation(s)
- Charlotte Volgers
- a Department of Medical Microbiology, School of Nutrition and Translational Research in Metabolism (NUTRIM) , Maastricht University Medical Centre , Maastricht , The Netherlands
| | - Paul H M Savelkoul
- a Department of Medical Microbiology, School of Nutrition and Translational Research in Metabolism (NUTRIM) , Maastricht University Medical Centre , Maastricht , The Netherlands.,b Department of Medical Microbiology and Infection Control , VU University Medical Center , Amsterdam , The Netherlands
| | - Frank R M Stassen
- a Department of Medical Microbiology, School of Nutrition and Translational Research in Metabolism (NUTRIM) , Maastricht University Medical Centre , Maastricht , The Netherlands
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40
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Qaisar U, Kruczek CJ, Azeem M, Javaid N, Colmer-Hamood JA, Hamood AN. The Pseudomonas aeruginosa extracellular secondary metabolite, Paerucumarin, chelates iron and is not localized to extracellular membrane vesicles. J Microbiol 2016; 54:573-81. [PMID: 27480638 DOI: 10.1007/s12275-016-5645-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 05/31/2016] [Accepted: 07/01/2016] [Indexed: 10/21/2022]
Abstract
Proteins encoded by the Pseudomonas aeruginosa pvcA-D operon synthesize a novel isonitrile functionalized cumarin termed paerucumarin. The pvcA-D operon enhances the expression of the P. aeruginosa fimbrial chaperone/usher pathway (cup) genes and this effect is mediated through paerucumarin. Whether pvcA-D and/or paerucumarin affect the expression of other P. aeruginosa genes is not known. In this study, we examined the effect of a mutation in pvcA-D operon the global transcriptome of the P. aeruginosa strain PAO1-UW. The mutation reduced the expression of several ironcontrolled genes including pvdS, which is essential for the expression of the pyoverdine genes. Additional transcriptional studies showed that the pvcA-D operon is not regulated by iron. Exogenously added paerucumarin enhanced pyoverdine production and pvdS expression in PAO1-UW. Iron-chelation experiments revealed that purified paerucumarin chelates iron. However, exogenously added paerucumarin significantly reduced the growth of a P. aeruginosa mutant defective in pyoverdine and pyochelin production. In contrast to other secondary metabolite, Pseudomonas quinolone signal (PQS), paerucumarin is not localized to the P. aeruginosa membrane vesicles. These results suggest that paerucumarin enhances the expression of iron-controlled genes by chelating iron within the P. aeruginosa extracellular environment. Although paerucumarin chelates iron, it does not function as a siderophore. Unlike PQS, paerucumarin is not associated with the P. aeruginosa cell envelope.
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Affiliation(s)
- Uzma Qaisar
- Departments of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, 79430, USA. .,School of Biological Sciences, University of the Punjab, Lahore, 54590, Pakistan.
| | - Cassandra J Kruczek
- Surgery Department, Texas Tech University Health Sciences Center, Lubbock, TX, 79430, USA
| | - Muhammed Azeem
- Botany Department, Government College University, Faisalabad, 38000, Pakistan
| | - Nasir Javaid
- School of Biological Sciences, University of the Punjab, Lahore, 54590, Pakistan
| | - Jane A Colmer-Hamood
- Departments of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, 79430, USA.,Medical Education, Texas Tech University Health Sciences Center, Lubbock, TX, 79430, USA
| | - Abdul N Hamood
- Departments of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, 79430, USA.,Surgery Department, Texas Tech University Health Sciences Center, Lubbock, TX, 79430, USA
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41
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Reen FJ, Shanahan R, Cano R, O'Gara F, McGlacken GP. A structure activity-relationship study of the bacterial signal molecule HHQ reveals swarming motility inhibition in Bacillus atrophaeus. Org Biomol Chem 2016; 13:5537-41. [PMID: 25880413 DOI: 10.1039/c5ob00315f] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The sharp rise in antimicrobial resistance has been matched by a decline in the identification and clinical introduction of new classes of drugs to target microbial infections. Thus new approaches are being sought to counter the pending threat of a post-antibiotic era. In that context, the use of non-growth limiting small molecules, that target virulence behaviour in pathogens, has emerged as a solution with real clinical potential. We have previously shown that two signal molecules (HHQ and PQS) from the nosocomial pathogen Pseudomonas aeruginosa have modulatory activity towards other microorganisms. This current study involves the synthesis and evaluation of analogues of HHQ towards swarming and biofilm virulence behaviour in Bacillus atrophaeus, a soil bacterium and co-inhibitor with P. aeruginosa. Compounds with altered C6-C8 positions on the anthranilate-derived ring of HHQ, display a surprising degree of biological specificity, with certain candidates displaying complete motility inhibition. In contrast, anti-biofilm activity of the parent molecule was completely lost upon alteration at any position indicating a remarkable degree of specificity and delineation of phenotype.
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Affiliation(s)
- F Jerry Reen
- BIOMERIT Research Centre, Department of Microbiology, University College Cork, Ireland.
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42
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Hodgkinson JT, Gross J, Baker YR, Spring DR, Welch M. A new Pseudomonas quinolone signal (PQS) binding partner: MexG. Chem Sci 2016; 7:2553-2562. [PMID: 28660026 PMCID: PMC5477026 DOI: 10.1039/c5sc04197j] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 01/08/2016] [Indexed: 01/29/2023] Open
Abstract
Pseudomonas Quinolone Signal (PQS) probes capture a new binding partner for this signal molecule.
The opportunistic pathogen Pseudomonas aeruginosa utilises the cell–cell signalling mechanism known as quorum sensing to regulate virulence. P. aeruginosa produces two quinolone-based quorum sensing signalling molecules; the Pseudomonas quinolone signal (PQS) and its biosynthetic precursor 2-heptyl-4(1H)-quinolone (HHQ). To date, only one receptor (the PqsR protein) has been identified that is capable of binding PQS and HHQ. Here, we report on the synthesis of PQS and HHQ affinity probes for chemical proteomic studies. The PQS affinity probe very effectively captured PqsR in vitro. In addition, we also identified an interaction between PQS and the “orphan” RND efflux pump protein, MexG. The PQS–MexG interaction was further confirmed by purifying MexG and characterizing its ability to bind PQS and HHQ in vitro. Our findings suggest that PQS may have multiple binding partners in the cell and provide important new tools for studying quinolone signalling in P. aeruginosa and other organisms.
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Affiliation(s)
- James T Hodgkinson
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , CB2 1EW , UK
| | - Jeremy Gross
- Department of Biochemistry , University of Cambridge , 80 Tennis Court Road , Cambridge , CB2 1GA , UK .
| | - Ysobel R Baker
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , CB2 1EW , UK
| | - David R Spring
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , CB2 1EW , UK
| | - M Welch
- Department of Biochemistry , University of Cambridge , 80 Tennis Court Road , Cambridge , CB2 1GA , UK .
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43
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Toyofuku M, Tashiro Y, Hasegawa Y, Kurosawa M, Nomura N. Bacterial membrane vesicles, an overlooked environmental colloid: Biology, environmental perspectives and applications. Adv Colloid Interface Sci 2015; 226:65-77. [PMID: 26422802 DOI: 10.1016/j.cis.2015.08.013] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 08/27/2015] [Accepted: 08/27/2015] [Indexed: 12/31/2022]
Abstract
Phospholipid vesicles play important roles in biological systems. Bacteria are one of the most abundant organisms on Earth, and bacterial membrane vesicles (MVs) were first observed 50 years ago. Many bacteria release MVs to the environment that mainly consist of the cell membrane and typically range from 20 to 400 nm in size. Bacterial MVs are involved in several biological functions, such as delivery of cargo, virulence and gene transfer. MVs can be isolated from laboratory culture and directly from the environment, indicating their high abundance in and impact on ecosystems. Many colloidal particles in the environment ranging in size from 1 nm to 1 μm have been reported but not characterized at the molecular level, and MVs remain to be explored. Hence, MVs can be considered terra incognita in environmental colloid research. Although MV biogenesis and biological roles are yet to be fully understood, the accumulation of knowledge has opened new avenues for their applications. Via genetic engineering, the MV yield can be greatly increased, and the components of MVs can be tailored. Recent studies have demonstrated that MVs have promising potential for applications such as drug delivery systems and nanobiocatalysts. For instance, MV vaccines have been extensively studied and have already been approved in Europe. Recent MV studies have evoked great interest in the fields of biology and biotechnology, but fundamental questions, such as their transport in the environment or physicochemical features of MVs, remain to be addressed. In this review, we present the current understanding of bacterial MVs and environmental perspectives and further introduce their applications.
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Affiliation(s)
- Masanori Toyofuku
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Yosuke Tashiro
- Department of Applied Chemistry and Biochemical Engineering, Graduate School of Engineering, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
| | - Yusuke Hasegawa
- Department of Applied Chemistry and Biochemical Engineering, Graduate School of Engineering, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
| | - Masaharu Kurosawa
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Nobuhiko Nomura
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan.
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44
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Schwechheimer C, Kuehn MJ. Outer-membrane vesicles from Gram-negative bacteria: biogenesis and functions. Nat Rev Microbiol 2015; 13:605-19. [PMID: 26373371 PMCID: PMC5308417 DOI: 10.1038/nrmicro3525] [Citation(s) in RCA: 1120] [Impact Index Per Article: 124.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Outer-membrane vesicles (OMVs) are spherical buds of the outer membrane filled with periplasmic content and are commonly produced by Gram-negative bacteria. The production of OMVs allows bacteria to interact with their environment, and OMVs have been found to mediate diverse functions, including promoting pathogenesis, enabling bacterial survival during stress conditions and regulating microbial interactions within bacterial communities. Additionally, because of this functional versatility, researchers have begun to explore OMVs as a platform for bioengineering applications. In this Review, we discuss recent advances in the study of OMVs, focusing on new insights into the mechanisms of biogenesis and the functions of these vesicles.
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Affiliation(s)
- Carmen Schwechheimer
- Department of Biochemistry, Box 3711, Duke University Medical Center, Durham, North Carolina 27710, USA
| | - Meta J Kuehn
- Department of Biochemistry, Box 3711, Duke University Medical Center, Durham, North Carolina 27710, USA
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45
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Lusta KA. Bacterial outer membrane nanovesicles: Structure, biogenesis, functions, and application in biotechnology and medicine (Review). APPL BIOCHEM MICRO+ 2015. [DOI: 10.1134/s0003683815040092] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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46
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Hasegawa Y, Futamata H, Tashiro Y. Complexities of cell-to-cell communication through membrane vesicles: implications for selective interaction of membrane vesicles with microbial cells. Front Microbiol 2015; 6:633. [PMID: 26191043 PMCID: PMC4490254 DOI: 10.3389/fmicb.2015.00633] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 06/11/2015] [Indexed: 12/15/2022] Open
Affiliation(s)
- Yusuke Hasegawa
- Department of Applied Chemistry and Biochemical Engineering, Graduate School of Engineering, Shizuoka University Hamamatsu, Japan
| | - Hiroyuki Futamata
- Department of Applied Chemistry and Biochemical Engineering, Graduate School of Engineering, Shizuoka University Hamamatsu, Japan
| | - Yosuke Tashiro
- Department of Applied Chemistry and Biochemical Engineering, Graduate School of Engineering, Shizuoka University Hamamatsu, Japan
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47
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Nagy K, Sipos O, Valkai S, Gombai É, Hodula O, Kerényi Á, Ormos P, Galajda P. Microfluidic study of the chemotactic response of Escherichia coli to amino acids, signaling molecules and secondary metabolites. BIOMICROFLUIDICS 2015; 9:044105. [PMID: 26339306 PMCID: PMC4506296 DOI: 10.1063/1.4926981] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 07/02/2015] [Indexed: 05/08/2023]
Abstract
Quorum sensing and chemotaxis both affect bacterial behavior on the population level. Chemotaxis shapes the spatial distribution of cells, while quorum sensing realizes a cell-density dependent gene regulation. An interesting question is if these mechanisms interact on some level: Does quorum sensing, a density dependent process, affect cell density itself via chemotaxis? Since quorum sensing often spans across species, such a feedback mechanism may also exist between multiple species. We constructed a microfluidic platform to study these questions. A flow-free, stable linear chemical gradient is formed in our device within a few minutes that makes it suitable for sensitive testing of chemoeffectors: we showed that the amino acid lysine is a weak chemoattractant for Escherichia coli, while arginine is neutral. We studied the effect of quorum sensing signal molecules of Pseudomonas aeruginosa on E. coli chemotaxis. Our results show that N-(3-oxododecanoyl)-homoserine lactone (oxo-C12-HSL) and N-(butryl)-homoserine lactone (C4-HSL) are attractants. Furthermore, we tested the chemoeffector potential of pyocyanin and pyoverdine, secondary metabolites under a quorum sensing control. Pyocyanin is proved to be a weak attractant while pyoverdine are repellent. We demonstrated the usability of the device in co-culturing experiments, where we showed that various factors released by P. aeruginosa affect the dynamic spatial rearrangement of a neighboring E. coli population, while surface adhesion of the cells is also modulated.
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Affiliation(s)
- Krisztina Nagy
- Institute of Biophysics, Biological Research Centre of the Hungarian Academy of Sciences , Temesvari krt. 62, H-6726 Szeged, Hungary
| | - Orsolya Sipos
- Institute of Biophysics, Biological Research Centre of the Hungarian Academy of Sciences , Temesvari krt. 62, H-6726 Szeged, Hungary
| | - Sándor Valkai
- Institute of Biophysics, Biological Research Centre of the Hungarian Academy of Sciences , Temesvari krt. 62, H-6726 Szeged, Hungary
| | - Éva Gombai
- Institute of Biophysics, Biological Research Centre of the Hungarian Academy of Sciences , Temesvari krt. 62, H-6726 Szeged, Hungary
| | - Orsolya Hodula
- Institute of Biophysics, Biological Research Centre of the Hungarian Academy of Sciences , Temesvari krt. 62, H-6726 Szeged, Hungary
| | - Ádám Kerényi
- Institute of Biophysics, Biological Research Centre of the Hungarian Academy of Sciences , Temesvari krt. 62, H-6726 Szeged, Hungary
| | - Pál Ormos
- Institute of Biophysics, Biological Research Centre of the Hungarian Academy of Sciences , Temesvari krt. 62, H-6726 Szeged, Hungary
| | - Péter Galajda
- Institute of Biophysics, Biological Research Centre of the Hungarian Academy of Sciences , Temesvari krt. 62, H-6726 Szeged, Hungary
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48
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Inaba T, Oura H, Morinaga K, Toyofuku M, Nomura N. The Pseudomonas Quinolone Signal Inhibits Biofilm Development of Streptococcus mutans. Microbes Environ 2015; 30:189-91. [PMID: 25854411 PMCID: PMC4462930 DOI: 10.1264/jsme2.me14140] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Bacteria often thrive in natural environments through a sessile mode of growth, known as the biofilm. Biofilms are well-structured communities and their formation is tightly regulated. However, the mechanisms by which interspecies interactions alter the formation of biofilms have not yet been elucidated in detail. We herein demonstrated that a quorum-sensing signal in Pseudomonas aeruginosa (the Pseudomonas quinolone signal; PQS) inhibited biofilm formation by Streptococcus mutans. Although the PQS did not affect cell growth, biofilm formation was markedly inhibited. Our results revealed a unique role for this multifunctional PQS and also indicated its application in the development of prophylactic agents against caries-causing S. mutans.
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Affiliation(s)
- Tomohiro Inaba
- Graduate School of Life and Environmental Sciences, University of Tsukuba
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49
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Tyrrell J, Whelan N, Wright C, Sá-Correia I, McClean S, Thomas M, Callaghan M. Investigation of the multifaceted iron acquisition strategies of Burkholderia cenocepacia. Biometals 2015; 28:367-80. [DOI: 10.1007/s10534-015-9840-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 02/18/2015] [Indexed: 10/23/2022]
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50
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Methods of isolation and purification of outer membrane vesicles from gram-negative bacteria. Microbiol Res 2015; 170:1-9. [DOI: 10.1016/j.micres.2014.09.006] [Citation(s) in RCA: 146] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 09/08/2014] [Accepted: 09/24/2014] [Indexed: 01/31/2023]
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