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Ginez LD, Osorio A, Correal-Medina V, Arenas T, González-Espinosa C, Camarena L, Poggio S. Outer Membrane Vesicles from Caulobacter crescentus: A Platform for Recombinant Antigen Presentation. ACS NANO 2025; 19:20526-20538. [PMID: 40434063 DOI: 10.1021/acsnano.4c17885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2025]
Abstract
Bacterial outer membrane vesicles (OMVs) are an emerging and attractive technology for the generation of vaccines. Their properties as natural adjuvants, size, acellularity, and comparative cost of production favor their use as vaccines. Two major caveats for the use of OMVs as vaccines are their biological safety, since OMVs can induce a severe and even fatal inflammatory response and that they are naturally produced in low amounts. In this study, we show that a strategy to induce the production of OMVs applied to the nonpathogenic bacterium Caulobacter crescentus results in a strain with good OMV yields. In comparison with the OMVs derived from Escherichia coli K-12, the OMVs from C. crescentus induce a lower inflammatory response in an in vivo murine model of acute inflammation and in a human cell assay. Also, only minor signs of pain in mice were observed even at high doses. The C. crescentus OMVs can be efficiently loaded with a recombinant protein and induce antibody production against it with an adjuvant effect, indicating that these OMVs are viable vehicles for the presentation of recombinant antigens. These results support the use of the OMVs obtained from C. crescentus as a safe and effective platform for the development of low-cost vaccines.
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Affiliation(s)
- Luis David Ginez
- Departamento de Biología Molecular y Biotecnologia, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Instituto de Investigaciones Biomédicas, Circuito Mario de la Cueva s/n, Ciudad Universitaria, Ciudad de México 04510, México
| | - Aurora Osorio
- Departamento de Biología Molecular y Biotecnologia, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Instituto de Investigaciones Biomédicas, Circuito Mario de la Cueva s/n, Ciudad Universitaria, Ciudad de México 04510, México
| | - Víctor Correal-Medina
- Departamento de Biología Molecular y Biotecnologia, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Instituto de Investigaciones Biomédicas, Circuito Mario de la Cueva s/n, Ciudad Universitaria, Ciudad de México 04510, México
| | - Thelma Arenas
- Departamento de Biología Molecular y Biotecnologia, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Instituto de Investigaciones Biomédicas, Circuito Mario de la Cueva s/n, Ciudad Universitaria, Ciudad de México 04510, México
| | - Claudia González-Espinosa
- Pharmacobiology Department and Center for Research in Aging, Center for Research and Advanced Studies (Cinvestav), South Campus, Calzada de los Tenorios No. 235, Col. Granjas Coapa, Alcaldía Tlalpan, Ciudad de México 14330, México
| | - Laura Camarena
- Departamento de Biología Molecular y Biotecnologia, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Instituto de Investigaciones Biomédicas, Circuito Mario de la Cueva s/n, Ciudad Universitaria, Ciudad de México 04510, México
| | - Sebastian Poggio
- Departamento de Biología Molecular y Biotecnologia, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Instituto de Investigaciones Biomédicas, Circuito Mario de la Cueva s/n, Ciudad Universitaria, Ciudad de México 04510, México
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Sepúlveda-Pontigo A, Chávez-Villacreses K, Madrid-Muñoz C, Conejeros-Lillo S, Parra F, Melo-González F, Regaldiz A, González VPI, Méndez-Pérez I, Castillo-Godoy DP, Soto JA, Fuentes JA, Schinnerling K. Segatella copri Outer-Membrane Vesicles Are Internalized by Human Macrophages and Promote a Pro-Inflammatory Profile. Int J Mol Sci 2025; 26:3630. [PMID: 40332148 PMCID: PMC12027123 DOI: 10.3390/ijms26083630] [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: 02/28/2025] [Revised: 03/29/2025] [Accepted: 04/03/2025] [Indexed: 05/08/2025] Open
Abstract
Increased abundance of Segatella copri (S. copri) within the gut microbiota is associated with systemic inflammatory diseases, including rheumatoid arthritis. Although outer-membrane vesicles (OMVs) of Gram-negative bacteria are important players in microbiota-host communication, the effect of S. copri-derived OMVs on immune cells is unknown. Macrophages engulf and eliminate foreign material and are conditioned by environmental signals to promote either homeostasis or inflammation. Thus, we aimed to explore the impact of S. copri-OMVs on human macrophages in vitro, employing THP-1 and monocyte-derived macrophage models. The uptake of DiO-labeled S. copri-OMVs into macrophages was monitored by confocal microscopy and flow cytometry. Furthermore, the effect of S. copri and S. copri-OMVs on the phenotype and cytokine secretion of naïve (M0), pro-inflammatory (M1), and anti-inflammatory (M2) macrophages was analyzed by flow cytometry and ELISA, respectively. We show that S. copri-OMVs enter human macrophages through macropinocytosis and clathrin-dependent mechanisms. S. copri-OMVs, but not the parental bacterium, induced a dose-dependent increase in the expression of M1-related surface markers in M0 and M2 macrophages and activated the secretion of large amounts of pro-inflammatory cytokines in M1 macrophages. These results highlight an important role of S. copri-OMVs in promoting pro-inflammatory macrophage responses, which might contribute to systemic inflammatory diseases.
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Affiliation(s)
- Alison Sepúlveda-Pontigo
- Laboratorio de Inmunología Traslacional, Centro de Investigación de Resiliencia a Pandemias, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Av. República 330, Santiago 8370186, Chile; (A.S.-P.); (K.C.-V.); (C.M.-M.); (S.C.-L.); (F.M.-G.); (A.R.); (V.P.I.G.); (I.M.-P.); (D.P.C.-G.); (J.A.S.)
| | - Karissa Chávez-Villacreses
- Laboratorio de Inmunología Traslacional, Centro de Investigación de Resiliencia a Pandemias, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Av. República 330, Santiago 8370186, Chile; (A.S.-P.); (K.C.-V.); (C.M.-M.); (S.C.-L.); (F.M.-G.); (A.R.); (V.P.I.G.); (I.M.-P.); (D.P.C.-G.); (J.A.S.)
- Programa de Doctorado en Biociencias Moleculares, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago 8370186, Chile
| | - Cristóbal Madrid-Muñoz
- Laboratorio de Inmunología Traslacional, Centro de Investigación de Resiliencia a Pandemias, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Av. República 330, Santiago 8370186, Chile; (A.S.-P.); (K.C.-V.); (C.M.-M.); (S.C.-L.); (F.M.-G.); (A.R.); (V.P.I.G.); (I.M.-P.); (D.P.C.-G.); (J.A.S.)
- Programa de Doctorado en Biociencias Moleculares, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago 8370186, Chile
| | - Sabrina Conejeros-Lillo
- Laboratorio de Inmunología Traslacional, Centro de Investigación de Resiliencia a Pandemias, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Av. República 330, Santiago 8370186, Chile; (A.S.-P.); (K.C.-V.); (C.M.-M.); (S.C.-L.); (F.M.-G.); (A.R.); (V.P.I.G.); (I.M.-P.); (D.P.C.-G.); (J.A.S.)
| | - Francisco Parra
- Laboratorio de Genética y Patogénesis Bacteriana, Centro de Investigación de Resiliencia a Pandemias, Facultad de Ciencias de la Vida, Universidad Andrés Bello, República 330, Santiago 8370186, Chile;
- Programa de Doctorado en Biotecnología, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago 8370186, Chile
| | - Felipe Melo-González
- Laboratorio de Inmunología Traslacional, Centro de Investigación de Resiliencia a Pandemias, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Av. República 330, Santiago 8370186, Chile; (A.S.-P.); (K.C.-V.); (C.M.-M.); (S.C.-L.); (F.M.-G.); (A.R.); (V.P.I.G.); (I.M.-P.); (D.P.C.-G.); (J.A.S.)
| | - Alejandro Regaldiz
- Laboratorio de Inmunología Traslacional, Centro de Investigación de Resiliencia a Pandemias, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Av. República 330, Santiago 8370186, Chile; (A.S.-P.); (K.C.-V.); (C.M.-M.); (S.C.-L.); (F.M.-G.); (A.R.); (V.P.I.G.); (I.M.-P.); (D.P.C.-G.); (J.A.S.)
- Programa de Doctorado en Biociencias Moleculares, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago 8370186, Chile
| | - Valentina P. I. González
- Laboratorio de Inmunología Traslacional, Centro de Investigación de Resiliencia a Pandemias, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Av. República 330, Santiago 8370186, Chile; (A.S.-P.); (K.C.-V.); (C.M.-M.); (S.C.-L.); (F.M.-G.); (A.R.); (V.P.I.G.); (I.M.-P.); (D.P.C.-G.); (J.A.S.)
| | - Isabel Méndez-Pérez
- Laboratorio de Inmunología Traslacional, Centro de Investigación de Resiliencia a Pandemias, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Av. República 330, Santiago 8370186, Chile; (A.S.-P.); (K.C.-V.); (C.M.-M.); (S.C.-L.); (F.M.-G.); (A.R.); (V.P.I.G.); (I.M.-P.); (D.P.C.-G.); (J.A.S.)
- Programa de Doctorado en Biociencias Moleculares, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago 8370186, Chile
| | - Daniela P. Castillo-Godoy
- Laboratorio de Inmunología Traslacional, Centro de Investigación de Resiliencia a Pandemias, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Av. República 330, Santiago 8370186, Chile; (A.S.-P.); (K.C.-V.); (C.M.-M.); (S.C.-L.); (F.M.-G.); (A.R.); (V.P.I.G.); (I.M.-P.); (D.P.C.-G.); (J.A.S.)
- Programa de Doctorado en Biotecnología, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago 8370186, Chile
| | - Jorge A. Soto
- Laboratorio de Inmunología Traslacional, Centro de Investigación de Resiliencia a Pandemias, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Av. República 330, Santiago 8370186, Chile; (A.S.-P.); (K.C.-V.); (C.M.-M.); (S.C.-L.); (F.M.-G.); (A.R.); (V.P.I.G.); (I.M.-P.); (D.P.C.-G.); (J.A.S.)
| | - Juan A. Fuentes
- Laboratorio de Genética y Patogénesis Bacteriana, Centro de Investigación de Resiliencia a Pandemias, Facultad de Ciencias de la Vida, Universidad Andrés Bello, República 330, Santiago 8370186, Chile;
| | - Katina Schinnerling
- Laboratorio de Inmunología Traslacional, Centro de Investigación de Resiliencia a Pandemias, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Av. República 330, Santiago 8370186, Chile; (A.S.-P.); (K.C.-V.); (C.M.-M.); (S.C.-L.); (F.M.-G.); (A.R.); (V.P.I.G.); (I.M.-P.); (D.P.C.-G.); (J.A.S.)
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Wang H, Yuan T, Wang J, Li D, Lee WYW, Li Z, Sun S. Quercetagetin alleviates inflammatory osteoclastogenesis and collagen antibody-induced arthritis via Nrf2 signaling and Pten/AKT/Nfatc1 axis. Arthritis Res Ther 2025; 27:54. [PMID: 40057805 PMCID: PMC11889843 DOI: 10.1186/s13075-025-03522-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2024] [Accepted: 02/26/2025] [Indexed: 05/13/2025] Open
Abstract
PURPOSE Quercetagetin, a flavonoid derived from the natural herb Flos eriocauli, is used in traditional Chinese medicine for its fire-purging (anti-inflammation) and wind-expelling (pain-alleviating) properties. However, its potential effects concerning rheumatoid arthritis (RA) remain underexplored. This study was designed to elucidate the potential associations between Quercetagetin and RA, establishing the therapeutic potential of Quercetagetin and related mechanisms in RA treatment. METHODS Network pharmacology was conducted to decipher related targets and signaling pathways between Quercetagetin and RA. In vitro assays were then conducted to explore the effects of Quercetagetin on osteoclast cell behaviors and corresponding signaling pathways. In vivo study further validated the therapeutic effect of Quercetagetin in collagen antibody-induced arthritis (CAIA) mice. RESULTS The network pharmacological analysis indicated an intimate correlation of Quercetagetin with RA-related inflammatory osteolysis treatment. Pertaining to biological validations, 2 µM of Quercetagetin successfully inhibited LPS-driven osteoclast differentiation and function. qPCR assay and Western blot analyses denoted parallel changes in osteoclastic marker genes and proteins. Further mechanism study uncovered the effect of Quercetagetin in stimulating the Nrf2/Keap1 signaling pathway and moderating the Pten/AKT/Nfatc1 axis in osteoclasts. In vivo study revealed 40 mg/kg Quercetagetin every day could significantly relief joint destruction in CAIA mice. CONCLUSIONS Our study presents Quercetagetin 's therapeutic potential in treating RA, outlining its effects and potential mechanisms in suppressing LPS-induced osteoclast activity, and alleviating inflammatory bone destruction in CAIA model, thereby laying the groundwork for further translational research on Quercetagetin and Flos eriocauli in RA treatment.
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Affiliation(s)
- Haojue Wang
- Department of Joint Surgery, Cheeloo College of Medicine, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, 250012, China
- Department of Joint Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
| | - Tao Yuan
- Department of Joint Surgery, Cheeloo College of Medicine, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, 250012, China
- Department of Joint Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
| | | | - Dengju Li
- Department of Joint Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
- Orthopaedic Research Laboratory, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, 250117, China
| | - Wayne Yuk-Wai Lee
- Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong, China.
- SH Ho Scoliosis Research Laboratory, Joint Scoliosis Research Centre of the Chinese University of Hong Kong and Nanjing University, The Chinese University of Hong Kong, Hong Kong, China.
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China.
| | - Ziqing Li
- Department of Joint Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China.
- Orthopaedic Research Laboratory, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, 250117, China.
| | - Shui Sun
- Department of Joint Surgery, Cheeloo College of Medicine, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, 250012, China.
- Department of Joint Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China.
- Orthopaedic Research Laboratory, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, 250117, China.
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Wang H, Yuan T, Yu X, Wang Y, Liu C, Li Z, Sun S. Norwogonin Attenuates Inflammatory Osteolysis and Collagen-Induced Arthritis via Modulating Redox Signalling and Calcium Oscillations. J Cell Mol Med 2025; 29:e70492. [PMID: 40099974 PMCID: PMC11915625 DOI: 10.1111/jcmm.70492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2024] [Revised: 02/06/2025] [Accepted: 03/05/2025] [Indexed: 03/20/2025] Open
Abstract
Norwogonin is a flavonoid extraction derived from Scutellaria baicalensis. However, its potential mechanisms in the context of rheumatoid arthritis (RA) are unclear. This study investigates the specific effects and associated targets of Norwogonin in RA-related inflammatory osteolysis. Network pharmacology was conducted to analyse the core targets and signalling pathways of Norwogonin in RA. In vitro experiments were carried out to explore the actual effects of Norwogonin on osteoclast behaviours and related signalling mechanisms. In vivo studies further validated the therapeutic effect of Norwogonin in collagen-induced arthritis (CIA) mice. The network pharmacological analysis identified 18 shared targets between Norwogonin and RA, indicating a connection with inflammatory response and oxidoreductase activity. For biological validations, the results of in vitro experiments revealed 160 μM of Norwogonin inhibited LPS-driven osteoclast differentiation and function. The qPCR assay and Western blot analysis also disclosed consistently diminished changes to osteoclastic marker genes and proteins due to Norwogonin treatment, including those for osteoclast differentiation (Traf6, Tnfrsf11a and Nfatc1), fusion (Atp6v0d2, Dcstamp and Ocstamp) and function (Mmp9, Ctsk and Acp5). Further mechanism study revealed Norwogonin suppressed LPS-driven ROS production and calcium (Ca2+) oscillations. Also, intraperitoneal injection of 30 mg/kg Norwogonin every other day successfully mitigated clinical arthritis progression and attenuated bone destruction in the CIA model. Our study scrutinises Norwogonin's therapeutic prospects in treating RA and illustrates its inhibitory effects and potential mechanism within LPS-induced osteoclastogenesis and CIA mice, providing a basis for further translational research on Norwogonin in the treatment of RA-related inflammatory osteolysis.
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Affiliation(s)
- Haojue Wang
- Department of Joint SurgeryShandong Provincial Hospital, Cheeloo College of Medicine, Shandong UniversityJinanShandongChina
- Department of Joint SurgeryShandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanShandongChina
| | - Tao Yuan
- Department of Joint SurgeryShandong Provincial Hospital, Cheeloo College of Medicine, Shandong UniversityJinanShandongChina
- Department of Joint SurgeryShandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanShandongChina
| | - Xiao Yu
- Department of Obstetrics and GynecologyJian Gong HospitalBeijingChina
| | - Yi Wang
- Department of Joint SurgeryShandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanShandongChina
- Orthopaedic Research LaboratoryMedical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical SciencesJinanShandongChina
| | - Changxing Liu
- Department of Joint SurgeryShandong Provincial Hospital, Cheeloo College of Medicine, Shandong UniversityJinanShandongChina
| | - Ziqing Li
- Department of Joint SurgeryShandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanShandongChina
- Orthopaedic Research LaboratoryMedical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical SciencesJinanShandongChina
| | - Shui Sun
- Department of Joint SurgeryShandong Provincial Hospital, Cheeloo College of Medicine, Shandong UniversityJinanShandongChina
- Department of Joint SurgeryShandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanShandongChina
- Orthopaedic Research LaboratoryMedical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical SciencesJinanShandongChina
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Bai X, Li C, Qiu J, Wu L, Liu X, Yin T, Jin L, Hua Z. A "plug-and-display" nanoparticle based on attenuated outer membrane vesicles enhances the immunogenicity of protein antigens. J Control Release 2025; 378:687-700. [PMID: 39701455 DOI: 10.1016/j.jconrel.2024.12.022] [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: 07/28/2024] [Revised: 11/28/2024] [Accepted: 12/10/2024] [Indexed: 12/21/2024]
Abstract
As natural nanoparticle, the bacterial outer membrane vesicles (OMV) hold great potential in protein vaccines because of its self-adjuvant properties and good biocompatibility. However, the inherent immunotoxicity seriously hampers the application of OMV as protein antigens delivery carrier. Here, an attenuated OMV was constructed by elimination of the flagella protein from its surface and removal of the phosphate group of LPS at position one via gene-editing strategy. The gene-edited outer membrane vesicles (EMV) effectively reduced the levels of pro-inflammatory factors TNF-α and IL-6 in mouse blood by at least 10-fold and 15-fold respectively, compared to wild type OMV (WT-OMV). Importantly, protein antigens are conveniently displayed on EMV by employing a plug-and-display procedure, whereby the exterior of biotinylated EMV can be readily decorated with a synthetic protein comprised of target antigen fused to a biotin-binding protein. EMV greatly increased the uptake of antigen by dendritic cells (DCs) and promoted their maturation. EMV-antigen complex induces a robust antigen-specific antibody responses and cellular immune responses. We propose that EMV have great potential as protein antigens delivery vehicle for preventing different infectious diseases.
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Affiliation(s)
- Xiaohui Bai
- The State Key Laboratory of Pharmaceutical Biotechnology and Department of Neurology of Nanjing Drum Tower Hospital, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing 210023, China
| | - Chenyang Li
- The State Key Laboratory of Pharmaceutical Biotechnology and Department of Neurology of Nanjing Drum Tower Hospital, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing 210023, China
| | - Jiahui Qiu
- The State Key Laboratory of Pharmaceutical Biotechnology and Department of Neurology of Nanjing Drum Tower Hospital, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing 210023, China
| | - Leyang Wu
- The State Key Laboratory of Pharmaceutical Biotechnology and Department of Neurology of Nanjing Drum Tower Hospital, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing 210023, China; Changzhou High-Tech Research Institute of Nanjing University and Jiangsu TargetPharma Laboratories Inc, Changzhou 213164, China
| | - Xinqi Liu
- The State Key Laboratory of Pharmaceutical Biotechnology and Department of Neurology of Nanjing Drum Tower Hospital, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing 210023, China
| | - Te Yin
- The State Key Laboratory of Pharmaceutical Biotechnology and Department of Neurology of Nanjing Drum Tower Hospital, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing 210023, China
| | - Li Jin
- The State Key Laboratory of Pharmaceutical Biotechnology and Department of Neurology of Nanjing Drum Tower Hospital, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing 210023, China
| | - Zichun Hua
- The State Key Laboratory of Pharmaceutical Biotechnology and Department of Neurology of Nanjing Drum Tower Hospital, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing 210023, China; Changzhou High-Tech Research Institute of Nanjing University and Jiangsu TargetPharma Laboratories Inc, Changzhou 213164, China
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Zhang S, Huang J, Jiang Z, Tong H, Ma X, Liu Y. Tumor microbiome: roles in tumor initiation, progression, and therapy. MOLECULAR BIOMEDICINE 2025; 6:9. [PMID: 39921821 PMCID: PMC11807048 DOI: 10.1186/s43556-025-00248-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2024] [Revised: 01/06/2025] [Accepted: 01/21/2025] [Indexed: 02/10/2025] Open
Abstract
Over the past few years, the tumor microbiome is increasingly recognized for its multifaceted involvement in cancer initiation, progression, and metastasis. With the application of 16S ribosomal ribonucleic acid (16S rRNA) sequencing, the intratumoral microbiome, also referred to as tumor-intrinsic or tumor-resident microbiome, has also been found to play a significant role in the tumor microenvironment (TME). Understanding their complex functions is critical for identifying new therapeutic avenues and improving treatment outcomes. This review first summarizes the origins and composition of these microbial communities, emphasizing their adapted diversity across a diverse range of tumor types and stages. Moreover, we outline the general mechanisms by which specific microbes induce tumor initiation, including the activation of carcinogenic pathways, deoxyribonucleic acid (DNA) damage, epigenetic modifications, and chronic inflammation. We further propose the tumor microbiome may evade immunity and promote angiogenesis to support tumor progression, while uncovering specific microbial influences on each step of the metastatic cascade, such as invasion, circulation, and seeding in secondary sites. Additionally, tumor microbiome is closely associated with drug resistance and influences therapeutic efficacy by modulating immune responses, drug metabolism, and apoptotic pathways. Furthermore, we explore innovative microbe-based therapeutic strategies, such as engineered bacteria, oncolytic virotherapy, and other modalities aimed at enhancing immunotherapeutic efficacy, paving the way for microbiome-centered cancer treatment frameworks.
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Affiliation(s)
- Shengxin Zhang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Jing Huang
- Department of Medical Ultrasound, West China Hospital of Sichuan University, 37 Guoxue Lane, Wuhou District, Chengdu, 610041, Sichuan Province, China
| | - Zedong Jiang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Huan Tong
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Xuelei Ma
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China.
| | - Yang Liu
- Day Surgery Center, General Practice Medical Center, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, P. R. China.
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Alaei SR, King AJ, Banani K, Reddy A, Ortiz J, Knight AL, Haldeman J, Su TH, Park H, Coats SR, Jain S. Lipid a remodeling modulates outer membrane vesicle biogenesis by Porphyromonas gingivalis. J Bacteriol 2025; 207:e0033624. [PMID: 39660885 PMCID: PMC11784228 DOI: 10.1128/jb.00336-24] [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: 08/21/2024] [Accepted: 11/08/2024] [Indexed: 12/12/2024] Open
Abstract
Outer membrane vesicles (OMVs) are small membrane enclosed sacs released from bacteria which serve as carriers of biomolecules that shape interactions with the surrounding environment. The periodontal pathogen, Porphyromonas gingivalis, is a prolific OMV producer. Here, we investigated how the structure of lipid A, a core outer membrane molecule, influences P. gingivalis OMV production, OMV-dependent TLR4 activation, and biofilm formation. We examined mutant strains of P. gingivalis 33277 deficient for enzymes that alter lipid A phosphorylation and acylation status. The lipid A C4'-phosphatase (lpxF)-deficient strain and strains bearing inactivating point mutations in the LpxF active site displayed markedly reduced OMV production relative to WT. In contrast, strains deficient for either the lipid A C1-phosphatase (lpxE) or the lipid A deacylase (PGN_1123; lpxZ) genes did not display alterations in OMV abundance compared to WT. These data indicate that lipid A C4'-phosphate removal is required for typical OMV formation. In addition, OMVs produced by ΔlpxF and ΔlpxZ strains, possessing only penta-acylated lipid A, stimulated robust TLR4 activation, whereas OMVs obtained from WT and ΔlpxE strains, containing predominantly tetra-acylated lipid A, did not. Hence, lipid A remodeling modulates the capacity of OMVs to engage host TLR4-dependent immunity. Finally, we demonstrate an inverse relationship between OMV abundance and biofilm density, with the ∆lpxF mutants forming denser biofilms than either WT, ΔlpxE, or ΔlpxZ strains. Therefore, OMVs may also contribute to pathogenesis by regulating biofilm formation and dispersal.IMPORTANCEPorphyromonas gingivalis is a bacterium strongly associated with periodontitis. P. gingivalis exports lipids, proteins, and other biomolecules that contribute to the bacterium's ability to persist in inflammatory conditions encountered during disease. These biomolecules are exported through several mechanisms, including via outer membrane vesicles (OMVs). Despite their ubiquity, the mechanisms that drive outer membrane vesicle production vary among bacteria and are not fully understood. In this study, we report that C4' dephosphorylation of lipid A, a major outer membrane molecule, is required for robust outer membrane vesicle production and biological function in P. gingivalis. This finding adds to the growing body of evidence that lipid A structure is an important factor in outer membrane vesicle biogenesis in diverse bacterial species.
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Affiliation(s)
- Sarah R. Alaei
- Division of Science and Mathematics, School of Interdisciplinary Arts and Sciences, University of Washington, Tacoma, Washington, USA
| | - Alisa J. King
- Division of Science and Mathematics, School of Interdisciplinary Arts and Sciences, University of Washington, Tacoma, Washington, USA
| | - Karim Banani
- Department of Periodontics, School of Dentistry, University of Washington, Seattle, Washington, USA
| | - Angel Reddy
- Division of Science and Mathematics, School of Interdisciplinary Arts and Sciences, University of Washington, Tacoma, Washington, USA
| | - Joshua Ortiz
- Division of Science and Mathematics, School of Interdisciplinary Arts and Sciences, University of Washington, Tacoma, Washington, USA
| | - Alexa L. Knight
- Division of Science and Mathematics, School of Interdisciplinary Arts and Sciences, University of Washington, Tacoma, Washington, USA
| | - Jessica Haldeman
- Division of Science and Mathematics, School of Interdisciplinary Arts and Sciences, University of Washington, Tacoma, Washington, USA
| | - Thet Hnin Su
- Department of Periodontics, School of Dentistry, University of Washington, Seattle, Washington, USA
| | - Hana Park
- Department of Periodontics, School of Dentistry, University of Washington, Seattle, Washington, USA
| | - Stephen R. Coats
- Department of Periodontics, School of Dentistry, University of Washington, Seattle, Washington, USA
| | - Sumita Jain
- Department of Periodontics, School of Dentistry, University of Washington, Seattle, Washington, USA
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8
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Zhao X, Wei Y, Bu Y, Ren X, Dong Z. Review on bacterial outer membrane vesicles: structure, vesicle formation, separation and biotechnological applications. Microb Cell Fact 2025; 24:27. [PMID: 39833809 PMCID: PMC11749425 DOI: 10.1186/s12934-025-02653-9] [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: 10/19/2024] [Accepted: 01/13/2025] [Indexed: 01/22/2025] Open
Abstract
Outer membrane vesicles (OMVs), shed by Gram-negative bacteria, are spherical nanostructures that play a pivotal role in bacterial communication and host-pathogen interactions. Comprising an outer membrane envelope and encapsulating a variety of bioactive molecules from their progenitor bacteria, OMVs facilitate material and informational exchange. This review delves into the recent advancements in OMV research, providing a comprehensive overview of their structure, biogenesis, and mechanisms of vesicle formation. It also explores their role in pathogenicity and the techniques for their enrichment and isolation. Furthermore, the review highlights the burgeoning applications of OMVs in the field of biomedicine, emphasizing their potential as diagnostic tools, vaccine candidates, and drug delivery vectors.
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Affiliation(s)
- Xiaofei Zhao
- Graduate School, Hebei Medical University, Shijiazhuang, China
- Department of Pharmacy, Hebei Key Laboratory of Clinical Pharmacy, Hebei General Hospital, Shijiazhuang, China
| | - Yusen Wei
- Department of Oncology, Hebei General Hospital, Shijiazhuang, China
| | - Yuqing Bu
- Department of Oncology, Hebei General Hospital, Shijiazhuang, China
| | - Xiaokai Ren
- Graduate School, Hebei Medical University, Shijiazhuang, China
- Department of Pharmacy, Hebei Key Laboratory of Clinical Pharmacy, Hebei General Hospital, Shijiazhuang, China
| | - Zhanjun Dong
- Graduate School, Hebei Medical University, Shijiazhuang, China.
- Department of Pharmacy, Hebei Key Laboratory of Clinical Pharmacy, Hebei General Hospital, Shijiazhuang, China.
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9
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Li G, Pu S, You L, Gao Y, Zhong Y, Zhao H, Fan D, Lu X. Innovative Strategies in Oncology: Bacterial Membrane Vesicle-Based Drug Delivery Systems for Cancer Diagnosis and Therapy. Pharmaceutics 2025; 17:58. [PMID: 39861706 PMCID: PMC11768367 DOI: 10.3390/pharmaceutics17010058] [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: 11/15/2024] [Revised: 12/18/2024] [Accepted: 12/25/2024] [Indexed: 01/27/2025] Open
Abstract
Outer membrane vesicles (OMVs) are double-layered structures of nanoscale lipids released by gram-negative bacteria. They have the same membrane composition and characteristics as primitive cells, which enables them to penetrate cells and tissues efficiently. These OMVs exhibit excellent membrane stability, immunogenicity, safety, and permeability (which makes it easier for them to penetrate into tumour tissue), making them suitable for developing cancer vaccines and drug delivery systems. Recent studies have focused on engineering OMVs to enhance tumour-targeting capabilities, reduce toxicity, and extend circulation time in vivo. This article reviews the latest progress in OMV engineering for tumour treatment and discusses the challenges associated with the use of OMV-based antitumour therapy in clinical practice.
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Affiliation(s)
- Guodong Li
- College of Life Sciences, Northwest University, Xi’an 710069, China; (G.L.)
- State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers, Biotechnology Center, School of Pharmacy, The Fourth Military Medical University, Xi’an 710032, China
| | - Shuangpeng Pu
- College of Life Sciences, Northwest University, Xi’an 710069, China; (G.L.)
- State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers, Biotechnology Center, School of Pharmacy, The Fourth Military Medical University, Xi’an 710032, China
| | - Lisiyao You
- College of Life Sciences, Northwest University, Xi’an 710069, China; (G.L.)
- State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers, Biotechnology Center, School of Pharmacy, The Fourth Military Medical University, Xi’an 710032, China
| | - Yuan Gao
- State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers, Biotechnology Center, School of Pharmacy, The Fourth Military Medical University, Xi’an 710032, China
| | - Yuexia Zhong
- Outpatient Department of the Second Affiliated Hospital of the Fourth Military Medical University, Xi’an 710032, China
| | - Huadong Zhao
- Department of General Surgery, Tangdu Hospital, Air Force Medical University, Xi’an 710038, China;
| | - Dong Fan
- Department of General Surgery, Tangdu Hospital, Air Force Medical University, Xi’an 710038, China;
| | - Xiyan Lu
- Outpatient Department of the Second Affiliated Hospital of the Fourth Military Medical University, Xi’an 710032, China
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10
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Xiang S, Khan A, Yao Q, Wang D. Recent advances in bacterial outer membrane vesicles: Effects on the immune system, mechanisms and their usage for tumor treatment. J Pharm Anal 2024; 14:101049. [PMID: 39840399 PMCID: PMC11750273 DOI: 10.1016/j.jpha.2024.101049] [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: 03/30/2024] [Revised: 06/27/2024] [Accepted: 07/19/2024] [Indexed: 01/23/2025] Open
Abstract
Tumor treatment remains a significant medical challenge, with many traditional therapies causing notable side effects. Recent research has led to the development of immunotherapy, which offers numerous advantages. Bacteria inherently possess motility, allowing them to preferentially colonize tumors and modulate the tumor immune microenvironment, thus influencing the efficacy of immunotherapy. Bacterial outer membrane vesicles (OMVs) secreted by gram-negative bacteria are nanoscale lipid bilayer structures rich in bacterial antigens, pathogen-associated molecular patterns (PAMPs), various proteins, and vesicle structures. These features allow OMVs to stimulate immune system activation, generate immune responses, and serve as efficient drug delivery vehicles. This dual capability enhances the effectiveness of immunotherapy combined with chemotherapy or phototherapy, thereby improving anticancer drug efficacy. Current research has concentrated on engineering OMVs to enhance production yield, minimize cytotoxicity, and improve the safety and efficacy of treatments. Consequently, OMVs hold great promise for applications in tumor immunotherapy, tumor vaccine development, and drug delivery. This article provides an overview of the structural composition and immune mechanisms of OMVs, details various OMVs modification strategies, and reviews the progress in using OMVs for tumor treatment and their anti-tumor mechanisms. Additionally, it discusses the challenges faced in translating OMV-based anti-tumor therapies into clinical practice, aiming to provide a comprehensive understanding of OMVs' potential for in-depth research and clinical application.
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Affiliation(s)
- Shuo Xiang
- Center for AIE Research, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, China
- College of Advanced Materials Engineering, Jiaxing Nanhu University, 572 Yuexiu Road, Jiaxing, Zhejiang, 314001, China
| | - Arshad Khan
- Nanomedicine Department, King Abdullah International Medical Research Center (KAIMRC), King Saud bin Abdulaziz University for Health Sciences, Ministry of National Guard Health Affairs, Riyadh, 11426, Saudi Arabia
| | - Qiufang Yao
- College of Advanced Materials Engineering, Jiaxing Nanhu University, 572 Yuexiu Road, Jiaxing, Zhejiang, 314001, China
| | - Dong Wang
- Center for AIE Research, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, China
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11
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Bai Z, Wang X, Liang T, Xu G, Cai J, Xu W, Yang K, Hu L, Pei P. Harnessing Bacterial Membrane Components for Tumor Vaccines: Strategies and Perspectives. Adv Healthc Mater 2024; 13:e2401615. [PMID: 38935934 DOI: 10.1002/adhm.202401615] [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: 05/01/2024] [Revised: 06/17/2024] [Indexed: 06/29/2024]
Abstract
Tumor vaccines stand at the vanguard of tumor immunotherapy, demonstrating significant potential and promise in recent years. While tumor vaccines have achieved breakthroughs in the treatment of cancer, they still encounter numerous challenges, including improving the immunogenicity of vaccines and expanding the scope of vaccine application. As natural immune activators, bacterial components offer inherent advantages in tumor vaccines. Bacterial membrane components, with their safer profile, easy extraction, purification, and engineering, along with their diverse array of immune components, activate the immune system and improve tumor vaccine efficacy. This review systematically summarizes the mechanism of action and therapeutic effects of bacterial membranes and its derivatives (including bacterial membrane vesicles and hybrid membrane biomaterials) in tumor vaccines. Subsequently, the authors delve into the preparation and advantages of tumor vaccines based on bacterial membranes and hybrid membrane biomaterials. Following this, the immune effects of tumor vaccines based on bacterial outer membrane vesicles are elucidated, and their mechanisms are explained. Moreover, their advantages in tumor combination therapy are analyzed. Last, the challenges and trends in this field are discussed. This comprehensive analysis aims to offer a more informed reference and scientific foundation for the design and implementation of bacterial membrane-based tumor vaccines.
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Affiliation(s)
- Zhenxin Bai
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection & School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Xuanyu Wang
- Teaching and Research Section of Nuclear Medicine, School of Basic Medical Sciences, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, People's Republic of China
| | - Tianming Liang
- Jiangsu Provincial Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, P.R. China
| | - Guangyu Xu
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection & School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Jinzhou Cai
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection & School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Wei Xu
- Jiangsu Provincial Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, P.R. China
| | - Kai Yang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection & School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Lin Hu
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection & School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Pei Pei
- Teaching and Research Section of Nuclear Medicine, School of Basic Medical Sciences, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, People's Republic of China
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12
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Li Y, Wang Y, Lin X, Sun S, Wu A, Ge Y, Yuan M, Wang J, Deng X, Tian Y. Algicidal bacteria-derived membrane vesicles as shuttles mediating cross-kingdom interactions between bacteria and algae. SCIENCE ADVANCES 2024; 10:eadn4526. [PMID: 39110793 PMCID: PMC11305373 DOI: 10.1126/sciadv.adn4526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 06/28/2024] [Indexed: 08/10/2024]
Abstract
Bacterial membrane vesicles (BMVs) are crucial biological vehicles for facilitating interspecies and interkingdom interactions. However, the extent and mechanisms of BMV involvement in bacterial-algal communication remain elusive. This study provides evidence of BMVs delivering cargos to targeted microalgae. Membrane vesicles (MVs) from Chitinimonas prasina LY03 demonstrated an algicidal profile similar to strain LY03. Further investigation revealed Tambjamine LY2, an effective algicidal compound, selectively packaged into LY03-MVs. Microscopic imaging demonstrated efficient delivery of Tambjamine LY2 to microalgae Heterosigma akashiwo and Thalassiosira pseudonana through membrane fusion. In addition, the study demonstrated the versatile cargo delivery capabilities of BMVs to algae, including the transfer of MV-carried nucleic acids into algal cells and the revival of growth in iron-depleted microalgae by MVs. Collectively, our findings reveal a previously unknown mechanism by which algicidal bacteria store hydrophobic algicidal compounds in MVs to trigger target microalgae death and highlight BMV potency in understanding and engineering bacterial-algae cross-talk.
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Affiliation(s)
- Yixin Li
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361102, China
| | - Yuezhou Wang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361102, China
| | - Xiaolan Lin
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361102, China
| | - Shuqian Sun
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361102, China
| | - Anan Wu
- State Key Laboratory for Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Yintong Ge
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361102, China
| | - Menghui Yuan
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361102, China
| | - Jianhua Wang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361102, China
| | - Xianming Deng
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361102, China
| | - Yun Tian
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361102, China
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361102, China
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13
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Shen H, Zheng R, Du M, Christiani DC. Environmental pollutants exposure-derived extracellular vesicles: crucial players in respiratory disorders. Thorax 2024; 79:680-691. [PMID: 38631896 DOI: 10.1136/thorax-2023-221302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 03/18/2024] [Indexed: 04/19/2024]
Abstract
BACKGROUND Individual exposure to environmental pollutants, as one of the most influential drivers of respiratory disorders, has received considerable attention due to its preventability and controllability. Considering that the extracellular vesicle (EV) was an emerging intercellular communication medium, recent studies have highlighted the crucial role of environmental pollutants derived EVs (EPE-EVs) in respiratory disorders. METHODS PubMed and Web of Science were searched from January 2018 to December 2023 for publications with key words of environmental pollutants, respiratory disorders and EVs. RESULTS Environmental pollutants could disrupt airway intercellular communication by indirectly stimulating airway barrier cells to secrete endogenous EVs, or directly transmitting exogenous EVs, mainly by biological pollutants. Mechanistically, EPE-EVs transferred specific contents to modulate biological functions of recipient cells, to induce respiratory inflammation and impair tissue and immune function, which consequently contributed to the development of respiratory diseases, such as asthma, chronic obstructive pulmonary disease, pulmonary fibrosis, pulmonary hypertension, lung cancer and infectious lung diseases. Clinically, EVs could emerged as promising biomarkers and biological agents for respiratory diseases attributed by their specificity, convenience, sensibility and stability. CONCLUSIONS Further studies of EPE-EVs are helpful to understand the aetiology and pathology of respiratory diseases, and facilitate the precision respiratory medicine in risk screening, early diagnosis, clinical management and biotherapy.
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Affiliation(s)
- Haoran Shen
- School of Pediatrics, Nanjing Medical University, Nanjing, China
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Rui Zheng
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing, China
- Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Mulong Du
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing, China
- Department of Biostatistics, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China
- Departments of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - David C Christiani
- Departments of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
- Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
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14
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Jiang B, Huang J. Influences of bacterial extracellular vesicles on macrophage immune functions. Front Cell Infect Microbiol 2024; 14:1411196. [PMID: 38873097 PMCID: PMC11169721 DOI: 10.3389/fcimb.2024.1411196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 05/20/2024] [Indexed: 06/15/2024] Open
Abstract
Bacterial extracellular vesicles (EVs) are crucial mediators of information transfer between bacteria and host cells. Macrophages, as key effector cells in the innate immune system, have garnered widespread attention for their interactions with bacterial EVs. Increasing evidence indicates that bacterial EVs can be internalized by macrophages through multiple pathways, thereby influencing their immune functions. These functions include inflammatory responses, antimicrobial activity, antigen presentation, and programmed cell death. Therefore, this review summarizes current research on the interactions between bacterial EVs and macrophages. This will aid in the deeper understanding of immune modulation mediated by pathogenic microorganisms and provide a basis for developing novel antibacterial therapeutic strategies.
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Affiliation(s)
- Bowei Jiang
- The First School of Clinical Medicine, Gannan Medical University, Ganzhou, China
| | - Junyun Huang
- Department of Laboratory Medicine, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
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15
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Liu J, Kang R, Tang D. Lipopolysaccharide delivery systems in innate immunity. Trends Immunol 2024; 45:274-287. [PMID: 38494365 DOI: 10.1016/j.it.2024.02.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 02/22/2024] [Accepted: 02/24/2024] [Indexed: 03/19/2024]
Abstract
Lipopolysaccharide (LPS), a key component of the outer membrane in Gram-negative bacteria (GNB), is widely recognized for its crucial role in mammalian innate immunity and its link to mortality in intensive care units. While its recognition via the Toll-like receptor (TLR)-4 receptor on cell membranes is well established, the activation of the cytosolic receptor caspase-11 by LPS is now known to lead to inflammasome activation and subsequent induction of pyroptosis. Nevertheless, a fundamental question persists regarding the mechanism by which LPS enters host cells. Recent investigations have identified at least four primary pathways that can facilitate this process: bacterial outer membrane vesicles (OMVs); the spike (S) protein of SARS-CoV-2; host-secreted proteins; and host extracellular vesicles (EVs). These delivery systems provide new avenues for therapeutic interventions against sepsis and infectious diseases.
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Affiliation(s)
- Jiao Liu
- DAMP Laboratory, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.
| | - Rui Kang
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX, USA.
| | - Daolin Tang
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX, USA.
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16
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Hu X, Zhen W, Bai D, Zhong J, Zhang R, Zhang H, Zhang Y, Ito K, Zhang B, Ma Y. Effects of dietary chlorogenic acid on cecal microbiota and metabolites in broilers during lipopolysaccharide-induced immune stress. Front Microbiol 2024; 15:1347053. [PMID: 38525083 PMCID: PMC10957784 DOI: 10.3389/fmicb.2024.1347053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 02/19/2024] [Indexed: 03/26/2024] Open
Abstract
Aims The aim of this study was to investigate the effects of chlorogenic acid (CGA) on the intestinal microorganisms and metabolites in broilers during lipopolysaccharide (LPS)-induced immune stress. Methods A total of 312 one-day-old Arbor Acres (AA) broilers were randomly allocated to four groups with six replicates per group and 13 broilers per replicate: (1) MS group (injected with saline and fed the basal diet); (2) ML group (injected with 0.5 mg LPS/kg and fed the basal diet); (3) MA group (injected with 0.5 mg LPS/kg and fed the basal diet supplemented with 1,000 mg/kg CGA); and (4) MB group (injected with saline and fed the basal diet supplemented with 1,000 mg/kg CGA). Results The results showed that the abundance of beneficial bacteria such as Bacteroidetes in the MB group was significantly higher than that in MS group, while the abundance of pathogenic bacteria such as Streptococcaceae was significantly decreased in the MB group. The addition of CGA significantly inhibited the increase of the abundance of harmful bacteria such as Streptococcaceae, Proteobacteria and Pseudomonas caused by LPS stress. The population of butyric acid-producing bacteria such as Lachnospiraceae and Coprococcus and beneficial bacteria such as Coriobacteriaceae in the MA group increased significantly. Non-targeted metabonomic analysis showed that LPS stress significantly upregulated the 12-keto-tetrahydroleukotriene B4, riboflavin and mannitol. Indole-3-acetate, xanthurenic acid, L-formylkynurenine, pyrrole-2-carboxylic acid and L-glutamic acid were significantly down-regulated, indicating that LPS activated inflammation and oxidation in broilers, resulting in intestinal barrier damage. The addition of CGA to the diet of LPS-stimulated broilers significantly decreased 12-keto-tetrahydro-leukotriene B4 and leukotriene F4 in arachidonic acid metabolism and riboflavin and mannitol in ABC transporters, and significantly increased N-acetyl-L-glutamate 5-semialdehyde in the biosynthesis of amino acids and arginine, The presence of pyrrole-2-carboxylic acid in D-amino acid metabolism and the cecal metabolites, indolelactic acid, xanthurenic acid and L-kynurenine, indicated that CGA could reduce the inflammatory response induced by immune stress, enhance intestinal barrier function, and boost antioxidant capacity. Conclusion We conclude that CGA can have a beneficial effect on broilers by positively altering the balance of intestinal microorganisms and their metabolites to inhibit intestinal inflammation and barrier damage caused by immune stress.
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Affiliation(s)
- Xiaodi Hu
- Department of Animal Physiology, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - Wenrui Zhen
- Department of Animal Physiology, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
- Henan International Joint Laboratory of Animal Welfare and Health Breeding, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - Dongying Bai
- Department of Animal Physiology, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
- Henan International Joint Laboratory of Animal Welfare and Health Breeding, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - Jiale Zhong
- Department of Animal Physiology, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - Ruilin Zhang
- Department of Animal Physiology, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - Haojie Zhang
- Department of Animal Physiology, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - Yi Zhang
- Department of Animal Physiology, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
- Henan International Joint Laboratory of Animal Welfare and Health Breeding, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - Koichi Ito
- Department of Food and Physiological Models, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Ibaraki, Japan
| | - Bingkun Zhang
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Yanbo Ma
- Department of Animal Physiology, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
- Henan International Joint Laboratory of Animal Welfare and Health Breeding, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
- Longmen Laboratory, Science & Technology Innovation Center for Completed Set Equipment, Luoyang, China
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Sun J, Huang Y, Li X, Xu X, Cui X, Hao F, Ji Q, Chen C, Bao G, Liu Y. Characterization and immunological effect of outer membrane vesicles from Pasteurella multocida on macrophages. Appl Microbiol Biotechnol 2024; 108:238. [PMID: 38407600 PMCID: PMC10896778 DOI: 10.1007/s00253-024-13060-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 01/11/2024] [Accepted: 02/06/2024] [Indexed: 02/27/2024]
Abstract
Pasteurella multocida is an important bacterial pathogen that can cause diseases in both animals and humans. Its elevated morbidity and mortality rates in animals result in substantial economic repercussions within the livestock industry. The prevention of diseases caused by P. multocida through immunization is impeded by the absence of a safe and effective vaccine. Outer membrane vesicles (OMVs) secreted from the outer membrane of Gram-negative bacteria are spherical vesicular structures that encompass an array of periplasmic components in conjunction with a diverse assortment of lipids and proteins. These vesicles can induce antibacterial immune responses within the host. P. multocida has been shown to produce OMVs. Nonetheless, the precise characteristics and immunomodulatory functions of P. multocida OMVs have not been fully elucidated. In this study, OMVs were isolated from P. multocida using an ultrafiltration concentration technique, and their morphology, protein constitution, and immunomodulatory properties in RAW264.7 cells were studied. Transmission electron microscopy (TEM) and nanoparticle tracking analysis (NTA) revealed that the OMVs exhibited typical spherical and bilayered lipid vesicular architecture, exhibiting an average diameter of approximately 147.5 nm. The yield of OMVs was 2.6 × 1011 particles/mL. Proteomic analysis revealed a high abundance of membrane-associated proteins within P. multocida OMVs, with the capability to instigate the host's immune response. Furthermore, OMVs stimulated the proliferation and cellular uptake of macrophages and triggered the secretion of cytokines, such as TNF-ɑ, IL-1β, IL-6, IL-10, and TGF-β1. Consequently, our results indicated that OMVs from P. multocida could directly interact with macrophages and regulate their immune function in vitro. These results supported the prospective applicability of P. multocida OMVs as a platform in the context of vaccine development. KEY POINTS: • Preparation and characterization of P. multocida OMVs. • P. multocida OMVs possess a range of antigens and lipoproteins associated with the activation of the immune system. • P. multocida OMVs can activate the proliferation, internalization, and cytokine secretion of macrophages in vitro.
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Affiliation(s)
- Jiaying Sun
- College of Life Sciences, China Jiliang University, Zhejiang, 310018, Hangzhou, China
| | - Yee Huang
- Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Zhejiang, 310021, Hangzhou, China
| | - Xuefeng Li
- College of Life Sciences, China Jiliang University, Zhejiang, 310018, Hangzhou, China
| | - Xiangfei Xu
- Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Zhejiang, 310021, Hangzhou, China
| | - Xuemei Cui
- Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Zhejiang, 310021, Hangzhou, China
| | - Fangjiao Hao
- Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Zhejiang, 310021, Hangzhou, China
| | - Quanan Ji
- Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Zhejiang, 310021, Hangzhou, China
| | - Chun Chen
- College of Life Sciences, China Jiliang University, Zhejiang, 310018, Hangzhou, China
| | - Guolian Bao
- Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Zhejiang, 310021, Hangzhou, China.
| | - Yan Liu
- Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Zhejiang, 310021, Hangzhou, China.
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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: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [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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19
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Chen G, Gao C, Jiang S, Cai Q, Li R, Sun Q, Xiao C, Xu Y, Wu B, Zhou H. Fusobacterium nucleatum outer membrane vesicles activate autophagy to promote oral cancer metastasis. J Adv Res 2024; 56:167-179. [PMID: 37059221 PMCID: PMC10834801 DOI: 10.1016/j.jare.2023.04.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/22/2023] [Accepted: 04/03/2023] [Indexed: 04/16/2023] Open
Abstract
INTRODUCTION Metastasis is an important cause of high mortality and lethality of oral cancer. Fusobacterium nucleatum (Fn) can promote tumour metastasis. Outer membrane vesicles (OMVs) are secreted by Fn. However, the effects of Fn-derived extracellular vesicles on oral cancer metastasis and the underlying mechanisms are unclear. OBJECTIVES We aimed to determine whether and how Fn OMVs mediate oral cancer metastasis. METHODS OMVs were isolated from brain heart infusion (BHI) broth supernatant of Fn by ultracentrifugation. Tumour-bearing mice were treated with Fn OMVs to evaluate the effect of OMVs on cancer metastasis. Transwell assays were performed to determine how Fn OMVs affect cancer cell migration and invasion. The differentially expressed genes in Fn OMV-treated/untreated cancer cells were identified by RNA-seq. Transmission electron microscopy, laser confocal microscopy, and lentiviral transduction were used to detect changes in autophagic flux in cancer cells stimulated with Fn OMVs. Western blotting assay was performed to determine changes in EMT-related marker protein levels in cancer cells. Fn OMVs' effects on migration after blocking autophagic flux by autophagy inhibitors were determined by in vitro and in vivo experiments. RESULTS Fn OMVs were structurally similar to vesicles. In the in vivo experiment, Fn OMVs promoted lung metastasis in tumour-bearing mice, while chloroquine (CHQ, an autophagy inhibitor) treatment reduced the number of pulmonary metastases resulting from the intratumoral Fn OMV injection. Fn OMVs promoted the migration and invasion of cancer cells in vivo, leading to altered expression levels of EMT-related proteins (E-cadherin downregulation; Vimentin/N-cadherin upregulation). RNA-seq showed that Fn OMVs activate intracellular autophagy pathways. Blocking autophagic flux with CHQ reduced in vitro and in vivo migration of cancer cells induced by Fn OMVs as well as reversed changes in EMT-related protein expression. CONCLUSION Fn OMVs not only induced cancer metastasis but also activated autophagic flux. Blocking autophagic flux weakened Fn OMV-stimulated cancer metastasis.
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Affiliation(s)
- Gang Chen
- Shenzhen Stomatology Hospital (Pingshan), Southern Medical University, Shenzhen 518118, China; Department of Stomatology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Chunna Gao
- Department of Stomatology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Shan Jiang
- Shenzhen Stomatology Hospital (Pingshan), Southern Medical University, Shenzhen 518118, China
| | - Qiaoling Cai
- Department of Stomatology, The First Affiliated Hospital of Xiamen University, Xiamen 361003, China
| | - Rongrong Li
- Department of Oral and Maxillofacial Head and Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Qiang Sun
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Can Xiao
- Department of Stomatology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Yubo Xu
- Department of Stomatology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China.
| | - Buling Wu
- Shenzhen Stomatology Hospital (Pingshan), Southern Medical University, Shenzhen 518118, China.
| | - Hongwei Zhou
- Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510655, China; State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, Guangdong 510515, China.
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20
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Weyant KB, Oloyede A, DeLisa MP. On-Demand Vaccine Production via Dock-and-Display of Biotinylated Antigens on Bacterial Extracellular Vesicles. Methods Mol Biol 2024; 2843:195-216. [PMID: 39141302 DOI: 10.1007/978-1-0716-4055-5_13] [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: 08/15/2024]
Abstract
Engineered outer membrane vesicles (OMVs) derived from Gram-negative bacteria are a promising vaccine technology for developing immunity against diverse pathogens. However, antigen display on OMVs can be challenging to control and highly variable due to bottlenecks in protein expression and localization to the bacterial host cell's outer membrane, especially for bulky and complex antigens. Here, we describe methods related to a universal vaccine technology called AvidVax (avidin-based vaccine antigen crosslinking) for rapid and simplified assembly of antigens on the exterior of OMVs during vaccine development. The AvidVax platform involves remodeling the OMV surface with multiple copies of a synthetic antigen-binding protein (SNAP), which is an engineered fusion protein comprised of an outer membrane scaffold protein linked to a biotin-binding protein. The resulting SNAPs enable efficient decoration of OMVs with a molecularly diverse array of biotinylated subunit antigens, including globular and membrane proteins, glycans and glycoconjugates, haptens, lipids, nucleic acids, and short peptides. We detail the key steps in the AvidVax vaccine production pipeline including preparation and isolation of SNAP-OMVs, biotinylation and enrichment of vaccine antigens, and formulation and characterization of antigen-loaded SNAP-OMVs.
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Affiliation(s)
| | - Ayomide Oloyede
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Weill Hall, Ithaca, NY, USA
| | - Matthew P DeLisa
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Weill Hall, Ithaca, NY, USA.
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, USA.
- Cornell Institute of Biotechnology, Cornell University, Ithaca, NY, USA.
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21
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Xie J, Li Q, Nie S. Bacterial extracellular vesicles: An emerging postbiotic. Trends Food Sci Technol 2024; 143:104275. [DOI: 10.1016/j.tifs.2023.104275] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2025]
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22
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Koukoulis TF, Beauchamp LC, Kaparakis-Liaskos M, McQuade RM, Purnianto A, Finkelstein DI, Barnham KJ, Vella LJ. Do Bacterial Outer Membrane Vesicles Contribute to Chronic Inflammation in Parkinson's Disease? JOURNAL OF PARKINSON'S DISEASE 2024; 14:227-244. [PMID: 38427502 PMCID: PMC10977405 DOI: 10.3233/jpd-230315] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 01/16/2024] [Indexed: 03/03/2024]
Abstract
Parkinson's disease (PD) is an increasingly common neurodegenerative disease. It has been suggested that the etiology of idiopathic PD is complex and multifactorial involving environmental contributions, such as viral or bacterial infections and microbial dysbiosis, in genetically predisposed individuals. With advances in our understanding of the gut-brain axis, there is increasing evidence that the intestinal microbiota and the mammalian immune system functionally interact. Recent findings suggest that a shift in the gut microbiome to a pro-inflammatory phenotype may play a role in PD onset and progression. While there are links between gut bacteria, inflammation, and PD, the bacterial products involved and how they traverse the gut lumen and distribute systemically to trigger inflammation are ill-defined. Mechanisms emerging in other research fields point to a role for small, inherently stable vesicles released by Gram-negative bacteria, called outer membrane vesicles in disease pathogenesis. These vesicles facilitate communication between bacteria and the host and can shuttle bacterial toxins and virulence factors around the body to elicit an immune response in local and distant organs. In this perspective article, we hypothesize a role for bacterial outer membrane vesicles in PD pathogenesis. We present evidence suggesting that these outer membrane vesicles specifically from Gram-negative bacteria could potentially contribute to PD by traversing the gut lumen to trigger local, systemic, and neuroinflammation. This perspective aims to facilitate a discussion on outer membrane vesicles in PD and encourage research in the area, with the goal of developing strategies for the prevention and treatment of the disease.
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Affiliation(s)
- Tiana F. Koukoulis
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, Australia
| | - Leah C. Beauchamp
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, Australia
- Ann Romney Center for Neurologic Diseases, Brighamand Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Maria Kaparakis-Liaskos
- Department of Microbiology, Anatomy, Physiology and Pharmacology, La Trobe University, Melbourne, VIC, Australia
| | - Rachel M. McQuade
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, Australia
- Department of Medicine, Gut-Axis Injury and Repair Laboratory, Western Centre for Health Research and Education (WCHRE), The University of Melbourne, Sunshine Hospital, St Albans, VIC, Australia
- Australian Institute of Musculoskeletal Science (AIMSS), Western Centre for Health Research and Education (WCHRE), Sunshine Hospital, St Albans, VIC, Australia
| | - Adityas Purnianto
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, Australia
| | - David I. Finkelstein
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, Australia
| | - Kevin J. Barnham
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, Australia
| | - Laura J. Vella
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, Australia
- Department of Surgery, The University of Melbourne, The Royal Melbourne Hospital, Parkville, VIC, Australia
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23
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Kaisanlahti A, Turunen J, Byts N, Samoylenko A, Bart G, Virtanen N, Tejesvi MV, Zhyvolozhnyi A, Sarfraz S, Kumpula S, Hekkala J, Salmi S, Will O, Korvala J, Paalanne N, Erawijantari PP, Suokas M, Medina TP, Vainio S, Medina OP, Lahti L, Tapiainen T, Reunanen J. Maternal microbiota communicates with the fetus through microbiota-derived extracellular vesicles. MICROBIOME 2023; 11:249. [PMID: 37953319 PMCID: PMC10642029 DOI: 10.1186/s40168-023-01694-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 10/09/2023] [Indexed: 11/14/2023]
Abstract
BACKGROUND Reports regarding the presence of bacteria in the fetal environment remain limited and controversial. Recently, extracellular vesicles secreted by the human gut microbiota have emerged as a novel mechanism for host-microbiota interaction. We aimed to investigate the presence of bacterial extracellular vesicles in the fetal environment during healthy pregnancies and determine whether extracellular vesicles derived from the gut microbiota can cross biological barriers to reach the fetus. RESULTS Bacterial extracellular vesicles were detectable in the amniotic fluid of healthy pregnant women, exhibiting similarities to extracellular vesicles found in the maternal gut microbiota. In pregnant mice, extracellular vesicles derived from human maternal gut microbiota were found to reach the intra-amniotic space. CONCLUSIONS Our findings reveal maternal microbiota-derived extracellular vesicles as an interaction mechanism between the maternal microbiota and fetus, potentially playing a pivotal role in priming the prenatal immune system for gut colonization after birth. Video Abstract.
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Affiliation(s)
- Anna Kaisanlahti
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland.
- Research Unit of Translational Medicine, University of Oulu, 90220, Oulu, Finland.
| | - Jenni Turunen
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Clinical Medicine, University of Oulu, 90220, Oulu, Finland
| | - Nadiya Byts
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, 90220, Oulu, Finland
| | - Anatoliy Samoylenko
- Laboratory of Developmental Biology, Disease Networks Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220, Oulu, Finland
| | - Genevieve Bart
- Laboratory of Developmental Biology, Disease Networks Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220, Oulu, Finland
| | - Nikke Virtanen
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, 90220, Oulu, Finland
| | - Mysore V Tejesvi
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Ecology and Genetics, Faculty of Science, University of Oulu, 90570, Oulu, Finland
| | - Artem Zhyvolozhnyi
- Laboratory of Developmental Biology, Disease Networks Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220, Oulu, Finland
| | - Sonia Sarfraz
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, 90220, Oulu, Finland
| | - Sohvi Kumpula
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, 90220, Oulu, Finland
| | - Jenni Hekkala
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, 90220, Oulu, Finland
| | - Sonja Salmi
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, 90220, Oulu, Finland
| | - Olga Will
- Section Biomedical Imaging, Department of Radiology and Neuroradiology, University Hospital Schleswig-Holstein Campus Kiel, Kiel University, 24105, Kiel, Germany
| | - Johanna Korvala
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, 90220, Oulu, Finland
| | - Niko Paalanne
- Research Unit of Clinical Medicine, University of Oulu, 90220, Oulu, Finland
- Department of Pediatrics and Adolescent Medicine, Oulu University Hospital, 90220, Oulu, Finland
| | | | - Marko Suokas
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
| | - Tuula Peñate Medina
- Section Biomedical Imaging, Department of Radiology and Neuroradiology, University Hospital Schleswig-Holstein Campus Kiel, Kiel University, 24105, Kiel, Germany
- Institute for Experimental Cancer Research, Kiel University, 24105, Kiel, Germany
| | - Seppo Vainio
- Laboratory of Developmental Biology, Disease Networks Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220, Oulu, Finland
- Kvantum Institute, University of Oulu, 90570, Oulu, Finland
| | - Oula Peñate Medina
- Section Biomedical Imaging, Department of Radiology and Neuroradiology, University Hospital Schleswig-Holstein Campus Kiel, Kiel University, 24105, Kiel, Germany
- Institute for Experimental Cancer Research, Kiel University, 24105, Kiel, Germany
- Lonza Netherlands B.V., 6167 RB, Geleen, Netherlands
| | - Leo Lahti
- Department of Computing, University of Turku, 20014, Turku, Finland
| | - Terhi Tapiainen
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Clinical Medicine, University of Oulu, 90220, Oulu, Finland
- Department of Pediatrics and Adolescent Medicine, Oulu University Hospital, 90220, Oulu, Finland
| | - Justus Reunanen
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, 90220, Oulu, Finland
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24
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Mao H, Gong T, Sun Y, Yang S, Qiao X, Yang D. Bacterial growth stage determines the yields, protein composition, and periodontal pathogenicity of Porphyromonas gingivalis outer membrane vesicles. Front Cell Infect Microbiol 2023; 13:1193198. [PMID: 37900318 PMCID: PMC10602934 DOI: 10.3389/fcimb.2023.1193198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 09/20/2023] [Indexed: 10/31/2023] Open
Abstract
Introduction P. gingivalis (W83), as the keystone pathogen in chronic periodontitis, has been found to be tightly bound to systemic diseases. Outer membrane vesicles (OMVs) produced by P. gingivalis (W83) are thought to serve key functions in bacterial virulence and pathogenicity. This study aims to comprehend the biological functions of P. gingivalis OMVs isolated from different growth stages by comparing their physicochemical properties and pathogenicity. Methods Protein composition was analyzed via isotope-labeled relative and absolute quantification (iTRAQ). Macrophage polarization and the expression of IL-6 and IL-1β were detected. The proliferation, migration, osteogenic differentiation, and IL-1b/NLRP3 expression of periodontal ligament stem cells (PDLSCs) were evaluated. P. gingivalis/P. gingivalis OMVs-induced periodontal models were also constructed in Sprague Dawley rats. Results The protein composition of P. gingivalis OMVs isolated from different growth stages demonstrated obvious differences ranging from 25 KDa to 75 KDa. In the results of flow cytometry, we found that in vitro experiments the M1 subtype of macrophages was more abundant in the late-log OMVs and stationary OMVs groups which boosted the production of inflammatory cytokines more than pre-log OMVs. Compared to pre-log OMVs, late-log OMVs and stationary OMVs had more pronounced inhibitory effects on proliferation, migration, and early osteogenesis of PDLSCs. The NLRP3 inflammasome was activated to a larger extent in the stationary OMVs group. Micro-computed tomography (Micro CT), hematoxylin-eosin staining (HE), and tartrate acid phosphatase (TRAP) results showed that the periodontal damage in the stationary OMVs group was worse than that in the pre-log OMVs and late-log OMVs group, but almost equal to that in the positive control group (P. gingivalis). Discussion In general, both in vivo and in vitro experiments showed that late-log OMVs and stationary OMVs have more significant pathogenicity in periodontal disease.
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Affiliation(s)
- Hongchen Mao
- Department of Endodontics, Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Ting Gong
- Department of Endodontics, Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Yuting Sun
- Department of Endodontics, Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Shiyao Yang
- Department of Endodontics, Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
| | - Xin Qiao
- Department of Endodontics, Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Deqin Yang
- Department of Endodontics, Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
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Sun D, Chen P, Xi Y, Sheng J. From trash to treasure: the role of bacterial extracellular vesicles in gut health and disease. Front Immunol 2023; 14:1274295. [PMID: 37841244 PMCID: PMC10570811 DOI: 10.3389/fimmu.2023.1274295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 09/14/2023] [Indexed: 10/17/2023] Open
Abstract
Bacterial extracellular vesicles (BEVs) have emerged as critical factors involved in gut health regulation, transcending their traditional roles as byproducts of bacterial metabolism. These vesicles function as cargo carriers and contribute to various aspects of intestinal homeostasis, including microbial balance, antimicrobial peptide secretion, physical barrier integrity, and immune system activation. Therefore, any imbalance in BEV production can cause several gut-related issues including intestinal infection, inflammatory bowel disease, metabolic dysregulation, and even cancer. BEVs derived from beneficial or commensal bacteria can act as potent immune regulators and have been implicated in maintaining gut health. They also show promise for future clinical applications in vaccine development and tumor immunotherapy. This review examines the multifaceted role of BEVs in gut health and disease, and also delves into future research directions and potential applications.
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Affiliation(s)
- Desen Sun
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, School of Basic Medical Sciences, Health Science Center, Ningbo University, Ningbo, China
| | - Pan Chen
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, School of Basic Medical Sciences, Health Science Center, Ningbo University, Ningbo, China
| | - Yang Xi
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, School of Basic Medical Sciences, Health Science Center, Ningbo University, Ningbo, China
| | - Jinghao Sheng
- Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, China
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26
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Wang Y, Luo X, Xiang X, Hao C, Ma D. Roles of bacterial extracellular vesicles in systemic diseases. Front Microbiol 2023; 14:1258860. [PMID: 37840728 PMCID: PMC10569430 DOI: 10.3389/fmicb.2023.1258860] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 09/05/2023] [Indexed: 10/17/2023] Open
Abstract
Accumulating evidence suggests that in various systems, not all bidirectional microbiota-host interactions involve direct cell contact. Bacterial extracellular vesicles (BEVs) may be key participants in this interkingdom crosstalk. BEVs mediate microbiota functions by delivering effector molecules that modulate host signaling pathways, thereby facilitating host-microbe interactions. BEV production during infections by both pathogens and probiotics has been observed in various host tissues. Therefore, these vesicles released by microbiota may have the ability to drive or inhibit disease pathogenesis in different systems within the host. Here, we review the current knowledge of BEVs and particularly emphasize their interactions with the host and the pathogenesis of systemic diseases.
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Affiliation(s)
- Yanzhen Wang
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, China
| | - Xinghong Luo
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, China
| | - Xiaozhen Xiang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Chunbo Hao
- Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, Hainan, China
| | - Dandan Ma
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, China
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Hockenberry A, Slack E, Stadtmueller BM. License to Clump: Secretory IgA Structure-Function Relationships Across Scales. Annu Rev Microbiol 2023; 77:645-668. [PMID: 37713459 DOI: 10.1146/annurev-micro-032521-041803] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/17/2023]
Abstract
Secretory antibodies are the only component of our adaptive immune system capable of attacking mucosal pathogens topologically outside of our bodies. All secretory antibody classes are (a) relatively resistant to harsh proteolytic environments and (b) polymeric. Recent elucidation of the structure of secretory IgA (SIgA) has begun to shed light on SIgA functions at the nanoscale. We can now begin to unravel the structure-function relationships of these molecules, for example, by understanding how the bent conformation of SIgA enables robust cross-linking between adjacent growing bacteria. Many mysteries remain, such as the structural basis of protease resistance and the role of noncanonical bacteria-IgA interactions. In this review, we explore the structure-function relationships of IgA from the nano- to the metascale, with a strong focus on how the seemingly banal "license to clump" can have potent effects on bacterial physiology and colonization.
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Affiliation(s)
- Alyson Hockenberry
- Department of Environmental Microbiology, Swiss Federal Institute of Aquatic Science and Technology (EAWAG), Dübendorf, Switzerland
- Department of Environmental Systems Science (D-USYS), ETH Zürich, Zürich, Switzerland;
| | - Emma Slack
- Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland;
- Botnar Research Centre for Child Health, Basel, Switzerland
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Beth M Stadtmueller
- Department of Biochemistry, Center for Biophysics and Quantitative Biology, and Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, Illinois, USA;
- Department of Biomedical and Translational Sciences, Carle Illinois College of Medicine, University of Illinois, Urbana, Illinois, USA
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28
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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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29
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Li RS, Liu J, Wen C, Shi Y, Ling J, Cao Q, Wang L, Shi H, Huang CZ, Li N. Transformable nano-antibiotics for mechanotherapy and immune activation against drug-resistant Gram-negative bacteria. SCIENCE ADVANCES 2023; 9:eadg9601. [PMID: 37624881 PMCID: PMC10456869 DOI: 10.1126/sciadv.adg9601] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 07/27/2023] [Indexed: 08/27/2023]
Abstract
The dearth of antibiotic candidates against Gram-negative bacteria and the rise of antibiotic resistance create a global health concern. The challenge lies in the unique Gram-negative bacterial outer membrane that provides the impermeable barrier for antibiotics and sequesters antigen presentation. We designed a transformable nano-antibiotics (TNA) that can transform from nontoxic nanoparticles to bactericidal nanofibrils with reasonable rigidity (Young's modulus, 21.6 ± 5.9 MPa) after targeting β-barrel assembly machine A (BamA) and lipid polysaccharides (LPSs) of Gram-negative bacteria. After morphological transformation, the TNA can penetrate and damage the bacterial envelope, disrupt electron transport and multiple conserved biosynthetic and metabolic pathways, burst bacterial antigen release from the outer membrane, and subsequently activate the innate and adaptive immunity. TNA kills Gram-negative bacteria in vitro and in vivo with undetectable resistance through multiple bactericidal modes of action. TNA treatment-induced vaccination results in rapid and long-lasting immune responses, protecting against lethal reinfections.
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Affiliation(s)
- Rong Sheng Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
- National Demonstration Center for Experimental Chemistry and Chemical Engineering Education (Yunnan University), School of Chemical Science and Engineering, Yunnan University, Kunming 650091, P. R. China
| | - Jiahui Liu
- Institute of Biomedical Engineering, Kunming Medical University, Kunming 650500, P. R. China
| | - Cong Wen
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Yaru Shi
- School of Chemistry and Chemical Engineering, and Institute of Molecular Science, Shanxi University, Taiyuan 030006, P. R. China
| | - Jian Ling
- National Demonstration Center for Experimental Chemistry and Chemical Engineering Education (Yunnan University), School of Chemical Science and Engineering, Yunnan University, Kunming 650091, P. R. China
| | - Qiue Cao
- National Demonstration Center for Experimental Chemistry and Chemical Engineering Education (Yunnan University), School of Chemical Science and Engineering, Yunnan University, Kunming 650091, P. R. China
| | - Lei Wang
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Bio-medical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Hu Shi
- School of Chemistry and Chemical Engineering, and Institute of Molecular Science, Shanxi University, Taiyuan 030006, P. R. China
| | - Cheng Zhi Huang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P. R. China
| | - Na Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
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30
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Charpentier LA, Dolben EF, Hendricks MR, Hogan DA, Bomberger JM, Stanton BA. Bacterial Outer Membrane Vesicles and Immune Modulation of the Host. MEMBRANES 2023; 13:752. [PMID: 37755174 PMCID: PMC10536716 DOI: 10.3390/membranes13090752] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/18/2023] [Accepted: 08/22/2023] [Indexed: 09/28/2023]
Abstract
This article reviews the role of outer membrane vesicles (OMVs) in mediating the interaction between Gram-negative bacteria and their human hosts. OMVs are produced by a diverse range of Gram-negative bacteria during infection and play a critical role in facilitating host-pathogen interactions without requiring direct cell-to-cell contact. This article describes the mechanisms by which OMVs are formed and subsequently interact with host cells, leading to the transport of microbial protein virulence factors and short interfering RNAs (sRNA) to their host targets, exerting their immunomodulatory effects by targeting specific host signaling pathways. Specifically, this review highlights mechanisms by which OMVs facilitate chronic infection through epigenetic modification of the host immune response. Finally, this review identifies critical knowledge gaps in the field and offers potential avenues for future OMV research, specifically regarding rigor and reproducibility in OMV isolation and characterization methods.
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Affiliation(s)
- Lily A. Charpentier
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA; (L.A.C.); (E.F.D.); (D.A.H.); (J.M.B.)
| | - Emily F. Dolben
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA; (L.A.C.); (E.F.D.); (D.A.H.); (J.M.B.)
| | - Matthew R. Hendricks
- Department of Microbiology and Molecular Genetics, University of Pittsburgh, Pittsburgh, PA 15219, USA;
| | - Deborah A. Hogan
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA; (L.A.C.); (E.F.D.); (D.A.H.); (J.M.B.)
| | - Jennifer M. Bomberger
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA; (L.A.C.); (E.F.D.); (D.A.H.); (J.M.B.)
- Department of Microbiology and Molecular Genetics, University of Pittsburgh, Pittsburgh, PA 15219, USA;
| | - Bruce A. Stanton
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA; (L.A.C.); (E.F.D.); (D.A.H.); (J.M.B.)
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31
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Zhang X, Wang Y, Fan R, Zhang L, Li Z, Zhang Y, Zheng W, Wang L, Liu B, Quan C. Quantitative Proteomic Analysis of Outer Membrane Vesicles from Fusobacterium nucleatum Cultivated in the Mimic Cancer Environment. Microbiol Spectr 2023; 11:e0039423. [PMID: 37341631 PMCID: PMC10434195 DOI: 10.1128/spectrum.00394-23] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 05/25/2023] [Indexed: 06/22/2023] Open
Abstract
Fusobacterium nucleatum is a Gram-negative bacterium that has been identified as an important pathogenic gut bacterium associated with colorectal cancer. Compared with the normal intestine, the pH value of the tumor microenvironment is weakly acidic. The metabolic changes of F. nucleatum in the tumor microenvironment, especially the protein composition of its outer membrane vesicles, remain unclear. Here, we systematically analyzed the effect of environmental pH on the proteome of outer membrane vesicles (OMVs) from F. nucleatum by tandem mass tag (TMT) labeling-high-resolution liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis. A total of 991 proteins were identified in acidic OMVs (aOMVs) and neutral OMVs (nOMVs), including known virulence proteins and putative virulence proteins. Finally, 306 upregulated proteins and 360 downregulated proteins were detected in aOMVs, and approximately 70% of the expression of OMV proteins was altered under acidic conditions. A total of 29 autotransporters were identified in F. nucleatum OMVs, and 13 autotransporters were upregulated in aOMVs. Interestingly, three upregulated autotransporters (D5REI9, D5RD69, and D5RBW2) show homology to the known virulence factor Fap2, suggesting that they may be involved in various pathogenic pathways such as the pathway for binding with colorectal cancer cells. Moreover, we found that more than 70% of MORN2 domain-containing proteins may have toxic effects on host cells. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses demonstrated that a number of proteins were significantly enriched in multiple pathways involving fatty acid synthesis and butyrate synthesis. Seven metabolic enzymes involved in fatty acid metabolism pathways were identified in the proteomic data, of which 5 were upregulated and 2 were downregulated in aOMVs, while 14 metabolic enzymes involved in the butyric acid metabolic pathway were downregulated in aOMVs. In conclusion, we found a key difference in virulence proteins and pathways in the outer membrane vesicles of F. nucleatum between the tumor microenvironment pH and normal intestinal pH, which provides new clues for the prevention and treatment of colorectal cancer. IMPORTANCE F. nucleatum is an opportunistic pathogenic bacterium that can be enriched in colorectal cancer tissues, affecting multiple stages of colorectal cancer development. OMVs have been demonstrated to play key roles in pathogenesis by delivering toxins and other virulence factors to host cells. By employing quantitative proteomic analysis, we found that the pH conditions could affect the protein expression of the outer membrane vesicles of F. nucleatum. Under acidic conditions, approximately 70% of the expression of proteins in OMVs was altered. Several virulence factors, such as type 5a secreted autotransporter (T5aSSs) and membrane occupation and recognition nexus (MORN) domain-containing proteins, were upregulated under acidic conditions. A large number of proteins showed significant enrichments in multiple pathways involving fatty acid synthesis and butyrate synthesis. Proteomics analysis of the outer membrane vesicles secreted by pathogenic bacteria in the acidic tumor microenvironment is of great significance for elucidating the pathogenicity mechanism and its application in vaccine and drug delivery vehicles.
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Affiliation(s)
- Xuqiang Zhang
- Key Laboratory of Biotechnology and Bioresources Utilization of the Ministry of Education, College of Life Science, Dalian Minzu University, Dalian, Liaoning, China
- Department of Bioengineering, College of Life Science, Dalian Minzu University, Dalian, Liaoning, China
| | - Yuxin Wang
- Key Laboratory of Biotechnology and Bioresources Utilization of the Ministry of Education, College of Life Science, Dalian Minzu University, Dalian, Liaoning, China
- Department of Bioengineering, College of Life Science, Dalian Minzu University, Dalian, Liaoning, China
| | - Ruochen Fan
- Key Laboratory of Biotechnology and Bioresources Utilization of the Ministry of Education, College of Life Science, Dalian Minzu University, Dalian, Liaoning, China
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, Liaoning, China
| | - Liying Zhang
- Department of Bioengineering, College of Life Science, Dalian Minzu University, Dalian, Liaoning, China
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, Liaoning, China
| | - Zhuting Li
- Key Laboratory of Biotechnology and Bioresources Utilization of the Ministry of Education, College of Life Science, Dalian Minzu University, Dalian, Liaoning, China
- Department of Bioengineering, College of Life Science, Dalian Minzu University, Dalian, Liaoning, China
| | - Yanmei Zhang
- Key Laboratory of Biotechnology and Bioresources Utilization of the Ministry of Education, College of Life Science, Dalian Minzu University, Dalian, Liaoning, China
- Department of Bioengineering, College of Life Science, Dalian Minzu University, Dalian, Liaoning, China
| | - Wei Zheng
- Key Laboratory of Biotechnology and Bioresources Utilization of the Ministry of Education, College of Life Science, Dalian Minzu University, Dalian, Liaoning, China
- Department of Bioengineering, College of Life Science, Dalian Minzu University, Dalian, Liaoning, China
| | - Lulu Wang
- Key Laboratory of Biotechnology and Bioresources Utilization of the Ministry of Education, College of Life Science, Dalian Minzu University, Dalian, Liaoning, China
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, Liaoning, China
| | - Baoquan Liu
- Key Laboratory of Biotechnology and Bioresources Utilization of the Ministry of Education, College of Life Science, Dalian Minzu University, Dalian, Liaoning, China
- Department of Bioengineering, College of Life Science, Dalian Minzu University, Dalian, Liaoning, China
| | - Chunshan Quan
- Key Laboratory of Biotechnology and Bioresources Utilization of the Ministry of Education, College of Life Science, Dalian Minzu University, Dalian, Liaoning, China
- Department of Bioengineering, College of Life Science, Dalian Minzu University, Dalian, Liaoning, China
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Choi HJ, Ahn G, Yu US, Kim EJ, Ahn JY, Chan Jeong O. Pneumatically Driven Microfluidic Platform and Fully Automated Particle Concentration System for the Capture and Enrichment of Pathogens. ACS OMEGA 2023; 8:28344-28354. [PMID: 37576663 PMCID: PMC10413479 DOI: 10.1021/acsomega.3c02264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 07/14/2023] [Indexed: 08/15/2023]
Abstract
In this study, we developed a pneumatically driven microfluidic platform (PDMFP) operated by a fully automated particle concentration system (FAPCS) for the pretreatment of micro- and nano-sized materials. The proposed PDMFP comprises a 3D network with a curved fluidic chamber and channel, five on/off pneumatic valves for blocking fluid flow, and a sieve valve for sequential trapping of microbeads and target particles. Using this setup, concentrated targets are automatically released into an outlet port. The FAPCS mainly comprises solenoid valves, glass reservoirs, a regulator, pressure sensor, main printed circuit board, and liquid crystal display touch panel. All pneumatic valves in the microfluidic platform as well as the working fluids in the glass reservoirs are controlled using FAPCS. The flow rate of the working fluids is measured to demonstrate the sequential programed operation of the proposed pretreatment process using FAPCS. In our study, we successfully achieved rapid and efficient enrichment using PDMFP-FAPCS with fluorescence-labeled Escherichia coli. With pretreatment-10 min for the microbead concentration and 25 min for target binding-almost all the target bacteria could be captured. A total of 526 Gram-negative bacteria were attached to 82 beads, whereas Gram-positive bacteria were attached to only 2 of the 100 beads. Finally, we evaluated the PDMFP-FAPCS for SARS-CoV-2 receptor-binding domain (RBD)-based outer membrane vesicles (OMVs) (RBD-OMVs). Specific probes involved in PDMFP-FAPCS successfully isolated RBD-OMVs. Thus, PDMFP-FAPCS exhibits excellent enrichment of particles, including microbes and nanovesicles, and is an effective pretreatment platform for disease diagnosis and investigation.
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Affiliation(s)
- Hong Jin Choi
- Department
of Digital Anti-Aging Health Care, Inje
University - Gimhae Campus, Gimhae 50834, Republic of Korea
| | - Gna Ahn
- Center
for Ecology and Environmental Toxicology, Chungbuk National University, Cheongju 28644, Republic of Korea
| | - U Seok Yu
- Department
of Biomedical Engineering, Inje University
- Gimhae Campus, Gimhae 50834, Republic of Korea
| | - Eun Jin Kim
- Department
of Digital Anti-Aging Health Care, Inje
University - Gimhae Campus, Gimhae 50834, Republic of Korea
| | - Ji-Young Ahn
- Center
for Ecology and Environmental Toxicology, Chungbuk National University, Cheongju 28644, Republic of Korea
- Department
of Microbiology, Chungbuk National University, Cheongju 28644, Republic of Korea
| | - Ok Chan Jeong
- Department
of Digital Anti-Aging Health Care, Inje
University - Gimhae Campus, Gimhae 50834, Republic of Korea
- Department
of Biomedical Engineering, Inje University
- Gimhae Campus, Gimhae 50834, Republic of Korea
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Vázquez ME, Mesías AC, Acuña L, Spangler J, Zabala B, Parodi C, Thakur M, Oh E, Walper SA, Brandán CP. Exploring the performance of Escherichia coli outer membrane vesicles as a tool for vaccine development against Chagas disease. Mem Inst Oswaldo Cruz 2023; 118:e220263. [PMID: 37222309 DOI: 10.1590/0074-02760220263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 04/25/2023] [Indexed: 05/25/2023] Open
Abstract
BACKGROUND Vaccine development is a laborious craftwork in which at least two main components must be defined: a highly immunogenic antigen and a suitable delivery method. Hence, the interplay of these elements could elicit the required immune response to cope with the targeted pathogen with a long-lasting protective capacity. OBJECTIVES Here we evaluate the properties of Escherichia coli spherical proteoliposomes - known as outer membrane vesicles (OMVs) - as particles with natural adjuvant capacities and as antigen-carrier structures to assemble an innovative prophylactic vaccine for Chagas disease. METHODS To achieve this, genetic manipulation was carried out on E. coli using an engineered plasmid containing the Tc24 Trypanosoma cruzi antigen. The goal was to induce the release of OMVs displaying the parasite protein on their surface. FINDINGS As a proof of principle, we observed that native OMVs - as well as those carrying the T. cruzi antigen - were able to trigger a slight, but functional humoral response at low immunization doses. Of note, compared to the non-immunized group, native OMVs-vaccinated animals survived the lethal challenge and showed minor parasitemia values, suggesting a possible involvement of innate trained immunity mechanism. MAIN CONCLUSION These results open the range for further research on the design of new carrier strategies focused on innate immunity activation as an additional immunization target and venture to seek for alternative forms in which OMVs could be used for optimizing vaccine development.
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Affiliation(s)
- María Elisa Vázquez
- Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Salta, Instituto de Patología Experimental Dr Miguel Ángel Basombrío, Salta, Argentina
| | - Andrea Cecilia Mesías
- Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Salta, Instituto de Patología Experimental Dr Miguel Ángel Basombrío, Salta, Argentina
| | - Leonardo Acuña
- Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Salta, Instituto de Patología Experimental Dr Miguel Ángel Basombrío, Salta, Argentina
| | - Joseph Spangler
- US Naval Research Laboratory, Center for Bio/Molecular Science & Engineering, Washington, DC, United States of America
| | - Brenda Zabala
- Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Salta, Instituto de Patología Experimental Dr Miguel Ángel Basombrío, Salta, Argentina
| | - Cecilia Parodi
- Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Salta, Instituto de Patología Experimental Dr Miguel Ángel Basombrío, Salta, Argentina
| | - Meghna Thakur
- George Mason University, Fairfax, Virginia, United States of America
| | - Eunkeu Oh
- US Naval Research Laboratory, Optical Science Division, Washington, DC, United States of America
| | - Scott Allan Walper
- US Naval Research Laboratory, Center for Bio/Molecular Science & Engineering, Washington, DC, United States of America
| | - Cecilia Pérez Brandán
- Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Salta, Instituto de Patología Experimental Dr Miguel Ángel Basombrío, Salta, Argentina
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Singh J, Boettcher M, Dölling M, Heuer A, Hohberger B, Leppkes M, Naschberger E, Schapher M, Schauer C, Schoen J, Stürzl M, Vitkov L, Wang H, Zlatar L, Schett GA, Pisetsky DS, Liu ML, Herrmann M, Knopf J. Moonlighting chromatin: when DNA escapes nuclear control. Cell Death Differ 2023; 30:861-875. [PMID: 36755071 PMCID: PMC9907214 DOI: 10.1038/s41418-023-01124-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 09/05/2022] [Accepted: 09/12/2022] [Indexed: 02/10/2023] Open
Abstract
Extracellular chromatin, for example in the form of neutrophil extracellular traps (NETs), is an important element that propels the pathological progression of a plethora of diseases. DNA drives the interferon system, serves as autoantigen, and forms the extracellular scaffold for proteins of the innate immune system. An insufficient clearance of extruded chromatin after the release of DNA from the nucleus into the extracellular milieu can perform a secret task of moonlighting in immune-inflammatory and occlusive disorders. Here, we discuss (I) the cellular events involved in the extracellular release of chromatin and NET formation, (II) the devastating consequence of a dysregulated NET formation, and (III) the imbalance between NET formation and clearance. We include the role of NET formation in the occlusion of vessels and ducts, in lung disease, in autoimmune diseases, in chronic oral disorders, in cancer, in the formation of adhesions, and in traumatic spinal cord injury. To develop effective therapies, it is of utmost importance to target pathways that cause decondensation of chromatin during exaggerated NET formation and aggregation. Alternatively, therapies that support the clearance of extracellular chromatin are conceivable.
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Affiliation(s)
- Jeeshan Singh
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Michael Boettcher
- Department of Pediatric Surgery, University Medical Center Mannheim, University of Heidelberg, Mannheim, Germany
| | - Maximilian Dölling
- Department of Surgery, University Hospital Magdeburg, Magdeburg, Germany
| | - Annika Heuer
- Division of Spine Surgery, Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
- Mildred-Scheel Cancer Career Center Hamburg HaTriCS4, University Cancer Center Hamburg, Hamburg, Germany
| | - Bettina Hohberger
- Department of Ophthalmology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Moritz Leppkes
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
- Department of Internal Medicine 1, Gastroenterology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Elisabeth Naschberger
- Division of Molecular and Experimental Surgery, Universitätsklinikum Erlangen, Friedrich-Alexander Universtität Erlangen-Nürnberg (FAU), Erlangen, Germany
- Comprehensive Cancer Center Erlangen-EMN, Universitätsklinikum Erlangen, Erlangen, Germany
| | - Mirco Schapher
- Department of Otorhinolaryngology, Head and Neck Surgery, Friedrich-Alexander University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
- Department of Otorhinolaryngology, Head and Neck Surgery, Paracelsus University, Nürnberg, Germany
| | - Christine Schauer
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Janina Schoen
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Michael Stürzl
- Division of Molecular and Experimental Surgery, Universitätsklinikum Erlangen, Friedrich-Alexander Universtität Erlangen-Nürnberg (FAU), Erlangen, Germany
- Comprehensive Cancer Center Erlangen-EMN, Universitätsklinikum Erlangen, Erlangen, Germany
| | - Ljubomir Vitkov
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Homburg, Germany
- Department of Environment & Biodiversity, University of Salzburg, Salzburg, 5020, Austria
- Department of Dental Pathology, University of East Sarajevo, East Sarajevo, Republic of Srpska, Bosnia and Herzegovina
| | - Han Wang
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Leticija Zlatar
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Georg A Schett
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - David S Pisetsky
- Department of Medicine and Immunology and Medical Research Service, Duke University Medical Center and Veterans Administration Medical Center, Durham, NC, USA
| | - Ming-Lin Liu
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Corporal Michael J. Crescenz VAMC, Philadelphia, PA, 19104, USA
| | - Martin Herrmann
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany.
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany.
| | - Jasmin Knopf
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
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Characterization and Vaccine Potential of Outer Membrane Vesicles from Photobacterium damselae subsp. piscicida. Int J Mol Sci 2023; 24:ijms24065138. [PMID: 36982212 PMCID: PMC10049053 DOI: 10.3390/ijms24065138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 03/01/2023] [Accepted: 03/03/2023] [Indexed: 03/11/2023] Open
Abstract
Photobacterium damselae subsp. piscicida (Phdp) is a Gram-negative fish pathogen with worldwide distribution and broad host specificity that causes heavy economic losses in aquaculture. Although Phdp was first identified more than 50 years ago, its pathogenicity mechanisms are not completely understood. In this work, we report that Phdp secretes large amounts of outer membrane vesicles (OMVs) when cultured in vitro and during in vivo infection. These OMVs were morphologically characterized and the most abundant vesicle-associated proteins were identified. We also demonstrate that Phdp OMVs protect Phdp cells from the bactericidal activity of fish antimicrobial peptides, suggesting that secretion of OMVs is part of the strategy used by Phdp to evade host defense mechanisms. Importantly, the vaccination of sea bass (Dicentrarchus labrax) with adjuvant-free crude OMVs induced the production of anti-Phdp antibodies and resulted in partial protection against Phdp infection. These findings reveal new aspects of Phdp biology and may provide a basis for developing new vaccines against this pathogen.
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Ye J, Yang H, Hu W, Tang K, Liu A, Bi S. Changed cecal microbiota involved in growth depression of broiler chickens induced by immune stress. Poult Sci 2023; 102:102598. [PMID: 36913756 PMCID: PMC10023976 DOI: 10.1016/j.psj.2023.102598] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/09/2023] [Accepted: 02/10/2023] [Indexed: 02/17/2023] Open
Abstract
A previous study identified genes and metabolites associated with amino acid metabolism, glycerophospholipid metabolism, and inflammatory response in the liver of broilers with immune stress. The present research was designed to investigate the effect of immune stress on the cecal microbiome in broilers. In addition, the correlation between altered microbiota and liver gene expression, the correlation between altered microbiota and serum metabolites were compared using the Spearman correlation coefficients. Eighty broiler chicks were randomly assigned to 2 groups with 4 replicate pens per group and 10 birds per pen. The model broilers were intraperitoneally injected of 250 µg/kg LPS at 12, 14, 33, and 35 d of age to induce immunological stress. Cecal contents were taken after the experiment and kept at -80°C for 16S rDNA gene sequencing. Then the Pearson's correlation between gut microbiome and liver transcriptome, between gut microbiome and serum metabolites were calculated using R software. The results showed that immune stress significantly changed microbiota composition at different taxonomic levels. KEGG pathways analysis suggested that these gut microbiota were mainly involved in biosynthesis of ansamycins, glycan degradation, D-glutamine and D-glutamate metabolism, valine, leucine, and isoleucine biosynthesis and biosynthesis of vancomycin group antibiotics. Moreover, immune stress increased the activities of metabolism of cofactors and vitamins, as well as decreased the ability of energy metabolism and digestive system. Pearson's correlation analysis identified several bacteria were positively correlated with the gene expression while a few of bacteria were negatively correlated with the gene expression. The results identified potential microbiota involvement in growth depression mediated by immune stress and provided strategies such as supplement of probiotic for alleviating immune stress in broiler chickens.
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Affiliation(s)
- Jixuan Ye
- Department of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Southwest University, Rongchang, Chongqing, China
| | - Huaao Yang
- Department of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Southwest University, Rongchang, Chongqing, China
| | - Weidong Hu
- Department of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Southwest University, Rongchang, Chongqing, China
| | - Keyi Tang
- College of Life Sciences, Sichuan Normal University, Chengdu, Sichuan, China
| | - Anfang Liu
- Department of Animal Genetics and Breeding, College of Animal Science and Technology, Southwest University, Rongchang, Chongqing, China
| | - Shicheng Bi
- Department of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Southwest University, Rongchang, Chongqing, China.
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Fu Q, Jiang J, Li X, Zhai Z, Wang X, Li C, Chen Q, Man C, Du L, Wang F, Chen S. Activation of MyD88-Dependent TLR Signaling Modulates Immune Response of the Mouse Heart during Pasteurella multocida Infection. Microorganisms 2023; 11:microorganisms11020400. [PMID: 36838365 PMCID: PMC9967429 DOI: 10.3390/microorganisms11020400] [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: 01/06/2023] [Revised: 01/31/2023] [Accepted: 01/31/2023] [Indexed: 02/09/2023] Open
Abstract
Pasteurella multocida (P. multocida) is an important zoonotic pathogen. In addition to lung lesions, necropsies have revealed macroscopic lesions in the heart in clinical cases. However, most previous studies focused on lung lesions while ignoring heart lesions. Therefore, to investigate the immune response of the P. multocida-infected heart, two murine infection models were established by using P. multocida serotype A (Pm HN02) and D (Pm HN01) strains. Histopathological examination revealed heterogeneous inflammatory responses, including immune cell infiltration in the epicardial and myocardial areas of the heart. Transcriptome sequencing was performed on infected cardiac tissues. To explore the traits of immune responses, we performed the functional enrichment analysis of differentially expressed genes, gene set enrichment analysis and gene set variation analysis. The results showed that the innate immune pathways were significantly regulated in both groups, including the NOD-like receptor signaling pathway, the complement and coagulation cascade and cytokine-cytokine receptor interaction. The Toll-like receptor signaling pathway was only significantly activated in the Pm HN02 group. For the Pm HN02 group, immunohistochemistry analysis further verified the significant upregulation of the hub component MyD88 at the protein level. In conclusion, this study reveals critical pathways for host heart recognition and defense against P. multocida serotypes A and D. Moreover, MyD88 was upregulated by P. multocida serotype A in the heart, providing a theoretical basis for future prevention, diagnosis and treatment research.
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MacNair CR, Tan MW. The role of bacterial membrane vesicles in antibiotic resistance. Ann N Y Acad Sci 2023; 1519:63-73. [PMID: 36415037 DOI: 10.1111/nyas.14932] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Bacterial survival during antibiotic exposure is a complex and multifaceted phenomenon. On top of antibiotic resistance genes, biofilm formation, and persister tolerance, bacterial membrane vesicles (MVs) provide a layer of protection that has been largely overlooked. MVs are spherical nanoparticles composed of lipid membranes and are common to Gram-positive and Gram-negative bacteria. Although the importance of MVs in bacterial pathogenesis and virulence factor transport has been firmly established, a growing body of work now identifies MVs as key contributors to bacterial survival during antibiotic exposure. Herein, we highlight the ability of MVs to reduce antibiotic efficacy and transmit resistance elements. We also discuss the potential of targeting MV production as an unconventional therapeutic approach.
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Affiliation(s)
- Craig R MacNair
- Department of Infectious Diseases, Genentech, Inc., South San Francisco, California, USA
| | - Man-Wah Tan
- Department of Infectious Diseases, Genentech, Inc., South San Francisco, California, USA
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Deng DK, Zhang JJ, Gan D, Zou JK, Wu RX, Tian Y, Yin Y, Li X, Chen FM, He XT. Roles of extracellular vesicles in periodontal homeostasis and their therapeutic potential. J Nanobiotechnology 2022; 20:545. [PMID: 36585740 PMCID: PMC9801622 DOI: 10.1186/s12951-022-01757-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 12/23/2022] [Indexed: 01/01/2023] Open
Abstract
Periodontal tissue is a highly dynamic and frequently stimulated area where homeostasis is easily destroyed, leading to proinflammatory periodontal diseases. Bacteria-bacteria and cell-bacteria interactions play pivotal roles in periodontal homeostasis and disease progression. Several reviews have comprehensively summarized the roles of bacteria and stem cells in periodontal homeostasis. However, they did not describe the roles of extracellular vesicles (EVs) from bacteria and cells. As communication mediators evolutionarily conserved from bacteria to eukaryotic cells, EVs secreted by bacteria or cells can mediate interactions between bacteria and their hosts, thereby offering great promise for the maintenance of periodontal homeostasis. This review offers an overview of EV biogenesis, the effects of EVs on periodontal homeostasis, and recent advances in EV-based periodontal regenerative strategies. Specifically, we document the pathogenic roles of bacteria-derived EVs (BEVs) in periodontal dyshomeostasis, focusing on plaque biofilm formation, immune evasion, inflammatory pathway activation and tissue destruction. Moreover, we summarize recent advancements in cell-derived EVs (CEVs) in periodontal homeostasis, emphasizing the multifunctional biological effects of CEVs on periodontal tissue regeneration. Finally, we discuss future challenges and practical perspectives for the clinical translation of EV-based therapies for periodontitis.
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Affiliation(s)
- Dao-Kun Deng
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi'an, People's Republic of China
| | - Jiu-Jiu Zhang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi'an, People's Republic of China
| | - Dian Gan
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi'an, People's Republic of China
| | - Jie-Kang Zou
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi'an, People's Republic of China
| | - Rui-Xin Wu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi'an, People's Republic of China
| | - Yi Tian
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi'an, People's Republic of China
| | - Yuan Yin
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi'an, People's Republic of China
| | - Xuan Li
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi'an, People's Republic of China.
| | - Fa-Ming Chen
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi'an, People's Republic of China.
| | - Xiao-Tao He
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi'an, People's Republic of China.
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Desulfovibrio fairfieldensis-Derived Outer Membrane Vesicles Damage Epithelial Barrier and Induce Inflammation and Pyroptosis in Macrophages. Cells 2022; 12:cells12010089. [PMID: 36611884 PMCID: PMC9818291 DOI: 10.3390/cells12010089] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022] Open
Abstract
Sulfate-reducing bacteria Desulfovibrio fairfieldensis is an opportunistic pathogen that widely exists in the human intestine and can cause severe infectious diseases. However, the mechanisms contributing to its pathogenesis remain of great interest. In this study, we aim to investigate the outer membrane vesicles (OMVs) secreted by D. fairfieldensis and their pathogenic effect. The OMVs separated by ultracentrifugation were spherical and displayed a characteristic bilayer lipid structure observed by transmission electron microscopy, with an average hydrodynamic diameter of 75 nm measurement using the particle size analyzer. We identified 1496 and 916 proteins from D. fairfieldensis and its OMVs using label-free non-target quantitative proteomics, respectively. The 560 co-expressed proteins could participate in bacterial life activities by function prediction. The translocation protein TolB, which participates in OMVs biogenesis and transporting toxins was highly expressed in OMVs. The OMVs inhibited the expression of tight junction proteins OCCLUDIN and ZO-1 in human colonic epithelial cells (Caco-2). The OMVs decreased the cell viability of monocyte macrophages (THP-1-Mφ) and activated various inflammatory factors secretion, including interferon-γ (IFN-γ), tumor necrosis factor (TNF-α), and many interleukins. Further, we found the OMVs induced the expression of cleaved-gasdermin D, caspase-1, and c-IL-1β and caused pyroptosis in THP-1-Mφ cells. Taken together, these data reveal that the D. fairfieldensis OMVs can damage the intestinal epithelial barrier and activate intrinsic inflammation.
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Bhar S, Zhao G, Bartel JD, Sterchele H, Del Mazo A, Emerson LE, Edelmann MJ, Jones MK. Bacterial extracellular vesicles control murine norovirus infection through modulation of antiviral immune responses. Front Immunol 2022; 13:909949. [PMID: 35990695 PMCID: PMC9386532 DOI: 10.3389/fimmu.2022.909949] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 07/11/2022] [Indexed: 11/13/2022] Open
Abstract
Human norovirus is the primary cause of non-bacterial gastroenteritis globally and is the second leading cause of diarrheal deaths in children in developing countries. However, effective therapeutics which prevent or clear norovirus infection are not yet available due to a lack of understanding regarding norovirus pathogenesis. Evidence shows that noroviruses can bind to the surface of commensal bacteria, and the presence of these bacteria alters both acute and persistent murine norovirus infection through the modulation of host immune responses. Interestingly, norovirus-bacterial interactions also affect the bacteria by inducing bacterial stress responses and increasing the production of bacterial extracellular vesicles. Given the established ability of these vesicles to easily cross the intestinal barriers, enter the lamina propria, and modulate host responses, we hypothesized that bacterial extracellular vesicles influence murine norovirus infection through modulation of the antiviral immune response. In this study, we show that murine norovirus can attach to purified bacterial vesicles, facilitating co-inoculation of target cells with both virus and vesicle. Furthermore, we have found that when murine noroviruses and vesicles are used to co-inoculate macrophages, viral infection is reduced compared to virus infection alone. Specifically, co-inoculation with bacterial vesicles results in higher production and release of pro-inflammatory cytokines in response to viral infection. Ultimately, given that murine norovirus infection increases bacterial vesicle production in vivo, these data indicate that bacterial vesicles may serve as a mechanism by which murine norovirus infection is ultimately controlled and limited to a short-term disease.
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Chancharoenthana W, Kamolratanakul S, Ariyanon W, Thanachartwet V, Phumratanaprapin W, Wilairatana P, Leelahavanichkul A. Abnormal Blood Bacteriome, Gut Dysbiosis, and Progression to Severe Dengue Disease. Front Cell Infect Microbiol 2022; 12:890817. [PMID: 35782108 PMCID: PMC9248029 DOI: 10.3389/fcimb.2022.890817] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 05/11/2022] [Indexed: 12/14/2022] Open
Abstract
Despite a well-known association between gut barrier defect (leaky gut) and several diseases, data on translocation of pathogen molecules, including bacterial DNA (blood bacteriome), lipopolysaccharide (LPS), and serum (1→3)-β-D-glucan (BG), from the gut to the blood circulation (gut translocation) in dengue are still less studied. Perhaps, dengue infection might induce gut translocation of several pathogenic molecules that affect the disease severity. At the enrollment, there were 31 dengue cases in febrile and critical phases at 4.1 ± 0.3 days and 6.4 ± 1.1 days of illness, respectively, with the leaky gut as indicated by positive lactulose-to-mannitol excretion ratio. With blood bacteriome, the patients with critical phase (more severe dengue; n = 23) demonstrated more predominant abundance in Bacteroidetes and Escherichia spp. with the lower Bifidobacteria when compared with the healthy control (n = 5). Meanwhile, most of the blood bacteriome results in dengue with febrile stage (n = 8) were comparable to the control, except for the lower Bifidobacteria in dengue cases. Additionally, endotoxemia at the enrollment was demonstrated in five (62.5%) and 19 (82.6%) patients with febrile and critical phases, respectively, while serum BG was detectable in two (25%) and 20 (87%) patients with febrile and critical phases, respectively. There were higher peripheral blood non-classical monocytes and natural killer cells (NK cells) at the enrollment in patients with febrile phage than in the cases with critical stage. Then, non-classical monocytes (CD14-CD16+) and NK cells (CD56+CD16-) increased at 4 and 7 days of illness in the cases with critical and febrile stages, respectively, the elevation of LPS and/or BG in serum on day 7 was also associated with the increase in monocytes, NK cells, and cytotoxic T cells. In summary, enhanced Proteobacteria (pathogenic bacteria from blood bacteriomes) along with increased endotoxemia and serum BG (leaky gut syndrome) might be collaborated with the impaired microbial control (lower non-classical monocytes and NK cells) in the critical cases and causing more severe disease of dengue infection.
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Affiliation(s)
- Wiwat Chancharoenthana
- Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
- Tropical Immunology and Translational Research Unit, Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
- *Correspondence: Wiwat Chancharoenthana, ; Asada Leelahavanichkul,
| | - Supitcha Kamolratanakul
- Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
- Tropical Immunology and Translational Research Unit, Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Wassawon Ariyanon
- Cardiometabolic Centre, Department of Medicine, Bangkok Nursing Hospital, Bangkok, Thailand
- Department of Medicine, Banphaeo General Hospital, Samutsakhon, Thailand
| | - Vipa Thanachartwet
- Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Weerapong Phumratanaprapin
- Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Polrat Wilairatana
- Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Asada Leelahavanichkul
- Immunology Unit, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence on Translational Research in Inflammation and Immunology (CETRII), Department of Microbiology, Chulalongkorn University, Bangkok, Thailand
- *Correspondence: Wiwat Chancharoenthana, ; Asada Leelahavanichkul,
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Zou C, Zhang Y, Liu H, Wu Y, Zhou X. Extracellular Vesicles: Recent Insights Into the Interaction Between Host and Pathogenic Bacteria. Front Immunol 2022; 13:840550. [PMID: 35693784 PMCID: PMC9174424 DOI: 10.3389/fimmu.2022.840550] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 04/27/2022] [Indexed: 02/05/2023] Open
Abstract
Extracellular vesicles (EVs) are nanosized lipid particles released by virtually every living cell. EVs carry bioactive molecules, shuttle from cells to cells and transduce signals, regulating cell growth and metabolism. Pathogenic bacteria can cause serious infections via a wide range of strategies, and host immune systems also develop extremely complex adaptations to counteract bacterial infections. As notable carriers, EVs take part in the interaction between the host and bacteria in several approaches. For host cells, several strategies have been developed to resist bacteria via EVs, including expelling damaged membranes and bacteria, neutralizing toxins, triggering innate immune responses and provoking adaptive immune responses in nearly the whole body. For bacteria, EVs function as vehicles to deliver toxins and contribute to immune escape. Due to their crucial functions, EVs have great application potential in vaccines, diagnosis and treatments. In the present review, we highlight the most recent advances, application potential and remaining challenges in understanding EVs in the interaction between the host and bacteria.
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Affiliation(s)
- Chaoyu Zou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, China
- Department of Hematology and Hematology Research Laboratory, West China Hospital, Sichuan University, Chengdu, China
| | - Yige Zhang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Huan Liu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Yu Wu
- Department of Hematology and Hematology Research Laboratory, West China Hospital, Sichuan University, Chengdu, China
| | - Xikun Zhou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, China
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Helicobacter pylori Pathogen-Associated Molecular Patterns: Friends or Foes? Int J Mol Sci 2022; 23:ijms23073531. [PMID: 35408892 PMCID: PMC8998707 DOI: 10.3390/ijms23073531] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 03/18/2022] [Accepted: 03/21/2022] [Indexed: 01/08/2023] Open
Abstract
Microbial infections are sensed by the host immune system by recognizing signature molecules called Pathogen-Associated Molecular Patterns—PAMPs. The binding of these biomolecules to innate immune receptors, called Pattern Recognition Receptors (PRRs), alerts the host cell, activating microbicidal and pro-inflammatory responses. The outcome of the inflammatory cascade depends on the subtle balance between the bacterial burn and the host immune response. The role of PRRs is to promote the clearance of the pathogen and to limit the infection by bumping inflammatory response. However, many bacteria, including Helicobacter pylori, evolved to escape PRRs’ recognition through different camouflages in their molecular pattern. This review examines all the different types of H. pylori PAMPs, their roles during the infection, and the mechanisms they evolved to escape the host recognition.
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