1
|
Wang H, Yang Y, Xu Y, Chen Y, Zhang W, Liu T, Chen G, Wang K. Phage-based delivery systems: engineering, applications, and challenges in nanomedicines. J Nanobiotechnology 2024; 22:365. [PMID: 38918839 PMCID: PMC11197292 DOI: 10.1186/s12951-024-02576-4] [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: 02/28/2024] [Accepted: 05/21/2024] [Indexed: 06/27/2024] Open
Abstract
Bacteriophages (phages) represent a unique category of viruses with a remarkable ability to selectively infect host bacteria, characterized by their assembly from proteins and nucleic acids. Leveraging their exceptional biological properties and modifiable characteristics, phages emerge as innovative, safe, and efficient delivery vectors. The potential drawbacks associated with conventional nanocarriers in the realms of drug and gene delivery include a lack of cell-specific targeting, cytotoxicity, and diminished in vivo transfection efficiency. In contrast, engineered phages, when employed as cargo delivery vectors, hold the promise to surmount these limitations and attain enhanced delivery efficacy. This review comprehensively outlines current strategies for the engineering of phages, delineates the principal types of phages utilized as nanocarriers in drug and gene delivery, and explores the application of phage-based delivery systems in disease therapy. Additionally, an incisive analysis is provided, critically examining the challenges confronted by phage-based delivery systems within the domain of nanotechnology. The primary objective of this article is to furnish a theoretical reference that contributes to the reasoned design and development of potent phage-based delivery systems.
Collapse
Affiliation(s)
- Hui Wang
- School of Pharmacy, Nantong University, Nantong, 226001, China
- Qingdao Central Hospital, University of Health and Rehabilitation Sciences (Qingdao Central Medical Group), Qingdao, 266024, China
- School of Rehabilitation Sciences and Engineering, University of Health and Rehabilitation Sciences, Qingdao, 266024, China
| | - Ying Yang
- School of Pharmacy, Nantong University, Nantong, 226001, China
| | - Yan Xu
- School of Pharmacy, Nantong University, Nantong, 226001, China
| | - Yi Chen
- School of Pharmacy, Nantong University, Nantong, 226001, China
| | - Wenjie Zhang
- School of Pharmacy, Nantong University, Nantong, 226001, China
| | - Tianqing Liu
- NICM Health Research Institute, Western Sydney University, Sydney, NSW, 2145, Australia.
| | - Gang Chen
- Qingdao Central Hospital, University of Health and Rehabilitation Sciences (Qingdao Central Medical Group), Qingdao, 266024, China.
- School of Rehabilitation Sciences and Engineering, University of Health and Rehabilitation Sciences, Qingdao, 266024, China.
| | - Kaikai Wang
- School of Pharmacy, Nantong University, Nantong, 226001, China.
| |
Collapse
|
2
|
Yañez AJ, Barrientos CA, Isla A, Aguilar M, Flores-Martin SN, Yuivar Y, Ojeda A, Ibieta P, Hernández M, Figueroa J, Avendaño-Herrera R, Mancilla M. Discovery and Characterization of the ddx41 Gene in Atlantic Salmon: Evolutionary Implications, Structural Functions, and Innate Immune Responses to Piscirickettsia salmonis and Renibacterium salmoninarum Infections. Int J Mol Sci 2024; 25:6346. [PMID: 38928053 PMCID: PMC11204154 DOI: 10.3390/ijms25126346] [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: 04/17/2024] [Revised: 05/31/2024] [Accepted: 06/03/2024] [Indexed: 06/28/2024] Open
Abstract
The innate immune response in Salmo salar, mediated by pattern recognition receptors (PRRs), is crucial for defending against pathogens. This study examined DDX41 protein functions as a cytosolic/nuclear sensor for cyclic dinucleotides, RNA, and DNA from invasive intracellular bacteria. The investigation determined the existence, conservation, and functional expression of the ddx41 gene in S. salar. In silico predictions and experimental validations identified a single ddx41 gene on chromosome 5 in S. salar, showing 83.92% homology with its human counterpart. Transcriptomic analysis in salmon head kidney confirmed gene transcriptional integrity. Proteomic identification through mass spectrometry characterized three unique peptides with 99.99% statistical confidence. Phylogenetic analysis demonstrated significant evolutionary conservation across species. Functional gene expression analysis in SHK-1 cells infected by Piscirickettsia salmonis and Renibacterium salmoninarum indicated significant upregulation of DDX41, correlated with increased proinflammatory cytokine levels and activation of irf3 and interferon signaling pathways. In vivo studies corroborated DDX41 activation in immune responses, particularly when S. salar was challenged with P. salmonis, underscoring its potential in enhancing disease resistance. This is the first study to identify the DDX41 pathway as a key component in S. salar innate immune response to invading pathogens, establishing a basis for future research in salmonid disease resistance.
Collapse
Affiliation(s)
- Alejandro J. Yañez
- Laboratorio de Diagnóstico y Terapia, Facultad de Ciencias, Universidad Austral de Chile, Valdivia 5090000, Chile; (C.A.B.); (A.I.); (M.A.); (S.N.F.-M.)
- Interdisciplinary Center for Aquaculture Research (INCAR), Concepción 4030000, Chile; (J.F.); (R.A.-H.)
| | - Claudia A. Barrientos
- Laboratorio de Diagnóstico y Terapia, Facultad de Ciencias, Universidad Austral de Chile, Valdivia 5090000, Chile; (C.A.B.); (A.I.); (M.A.); (S.N.F.-M.)
| | - Adolfo Isla
- Laboratorio de Diagnóstico y Terapia, Facultad de Ciencias, Universidad Austral de Chile, Valdivia 5090000, Chile; (C.A.B.); (A.I.); (M.A.); (S.N.F.-M.)
- Interdisciplinary Center for Aquaculture Research (INCAR), Concepción 4030000, Chile; (J.F.); (R.A.-H.)
- Departamento de Ciencias Básicas, Facultad de Ciencias, Universidad Santo Tomas, Valdivia 5090000, Chile
| | - Marcelo Aguilar
- Laboratorio de Diagnóstico y Terapia, Facultad de Ciencias, Universidad Austral de Chile, Valdivia 5090000, Chile; (C.A.B.); (A.I.); (M.A.); (S.N.F.-M.)
| | - Sandra N. Flores-Martin
- Laboratorio de Diagnóstico y Terapia, Facultad de Ciencias, Universidad Austral de Chile, Valdivia 5090000, Chile; (C.A.B.); (A.I.); (M.A.); (S.N.F.-M.)
| | - Yassef Yuivar
- ADL Diagnostic Chile, Sector la Vara, Puerto Montt 5480000, Chile; (Y.Y.); (A.O.)
| | - Adriana Ojeda
- ADL Diagnostic Chile, Sector la Vara, Puerto Montt 5480000, Chile; (Y.Y.); (A.O.)
| | - Pablo Ibieta
- TEKBios Ltda, Camino Pargua Km 8, Maullín 5580000, Chile;
| | - Mauricio Hernández
- Division of Biotechnology, MELISA Institute, San Pedro de la Paz 4133515, Chile;
| | - Jaime Figueroa
- Interdisciplinary Center for Aquaculture Research (INCAR), Concepción 4030000, Chile; (J.F.); (R.A.-H.)
- Laboratorio de Biología Molecular de Peces, Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia 5090000, Chile
| | - Rubén Avendaño-Herrera
- Interdisciplinary Center for Aquaculture Research (INCAR), Concepción 4030000, Chile; (J.F.); (R.A.-H.)
- Laboratorio de Patología de Organismos Acuáticos y Biotecnología Acuícola, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Viña del Mar 2520000, Chile
| | - Marcos Mancilla
- ADL Diagnostic Chile, Sector la Vara, Puerto Montt 5480000, Chile; (Y.Y.); (A.O.)
| |
Collapse
|
3
|
Dong J, Zhou W, Hu X, Bai J, Zhang S, Zhang X, Yu L, Yang P, Kong L, Liu M, Shang X, Su Z, Geng D, Zhu C. Honeycomb-inspired ZIF-sealed interface enhances osseointegration via anti-infection and osteoimmunomodulation. Biomaterials 2024; 307:122515. [PMID: 38401481 DOI: 10.1016/j.biomaterials.2024.122515] [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: 09/20/2023] [Revised: 01/19/2024] [Accepted: 02/20/2024] [Indexed: 02/26/2024]
Abstract
Implant-associated infections (IAIs) pose a significant threat to orthopedic surgeries. Bacteria colonizing the surface of implants disrupt bone formation-related cells and interfere with the osteoimmune system, resulting in an impaired immune microenvironment and osteogenesis disorders. Inspired by nature, a zeolitic imidazolate framework (ZIF)-sealed smart drug delivery system on Ti substrates (ZSTG) was developed for the "natural-artificial dual-enzyme intervention (NADEI)" strategy to address these challenges. The subtle sealing design of ZIF-8 on the TiO2 nanotubes ensured glucose oxidase (GOx) activity and prevented its premature leakage. In the acidic infection microenvironment, the degradation of ZIF-8 triggered the rapid release of GOx, which converted glucose into H2O2 for disinfection. The Zn2+ released from degraded ZIF-8, as a DNase mimic, can hydrolyze extracellular DNA, which further enhances H2O2-induced disinfection and prevents biofilm formation. Importantly, Zn2+-mediated M2 macrophage polarization significantly improved the impaired osteoimmune microenvironment, accelerating bone repair. Transcriptomics revealed that ZSTG effectively suppressed the inflammatory cascade induced by lipopolysaccharide while promoting cell proliferation, homeostasis maintenance, and bone repair. In vitro and in vivo results confirmed the superior anti-infective, osteoimmunomodulatory, and osteointegrative capacities of the ZSTG-mediated NADEI strategy. Overall, this smart bionic platform has significant potential for future clinical applications to treat IAIs.
Collapse
Affiliation(s)
- Jiale Dong
- Department of Orthopedics, Centre for Leading Medicine and Advanced Technologies of IHM, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
| | - Wei Zhou
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xianli Hu
- Department of Orthopedics, Centre for Leading Medicine and Advanced Technologies of IHM, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
| | - Jiaxiang Bai
- Department of Orthopedics, Centre for Leading Medicine and Advanced Technologies of IHM, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China; National Center for Translational Medicine (Shanghai) SHU Branch, Shanghai University, Shanghai 200444, China.
| | - Siming Zhang
- Department of Orthopedics, Centre for Leading Medicine and Advanced Technologies of IHM, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
| | - Xianzuo Zhang
- Department of Orthopedics, Centre for Leading Medicine and Advanced Technologies of IHM, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
| | - Lei Yu
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Peng Yang
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Lingtong Kong
- Department of Orthopedics, The First Affiliated Hospital of Naval Medical University: Changhai Hospital, Shanghai 200433, China
| | - Mingkai Liu
- Department of Orthopedics, Centre for Leading Medicine and Advanced Technologies of IHM, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
| | - Xifu Shang
- Department of Orthopedics, Centre for Leading Medicine and Advanced Technologies of IHM, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
| | - Zheng Su
- Department of Orthopedics, Centre for Leading Medicine and Advanced Technologies of IHM, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China.
| | - Dechun Geng
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China.
| | - Chen Zhu
- Department of Orthopedics, Centre for Leading Medicine and Advanced Technologies of IHM, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China.
| |
Collapse
|
4
|
Miller NJ, Dimitrakopoulou D, Baglia LA, Pavelka MS, Robert J. Exploring the Role of a Putative Secondary Metabolite Biosynthesis Pathway in Mycobacterium abscessus Pathogenesis Using a Xenopus laevis Tadpole Model. Microorganisms 2024; 12:1120. [PMID: 38930501 PMCID: PMC11206028 DOI: 10.3390/microorganisms12061120] [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: 04/29/2024] [Revised: 05/23/2024] [Accepted: 05/27/2024] [Indexed: 06/28/2024] Open
Abstract
Mycobacterium abscessus (Mab) is an emerging human pathogen that has a high rate of incidence in immunocompromised individuals. We have found a putative secondary metabolite pathway within Mab, which may be a key factor in its pathogenesis. This novel pathway is encoded in a gene cluster spanning MAB_0284c to 0305 and is related to Streptomyces pathways, producing the secondary metabolites streptonigrin and nybomycin. We constructed an in-frame deletion of the MAB_0295 (phzC) gene and tested it in our Xenopus laevis animal model. We have previously shown that X. laevis tadpoles, which have functional lungs and T cells, can serve as a reliable comparative model for persistent Mab infection and pathogenesis. Here, we report that tadpoles intraperitoneally infected with the ∆phzC mutant exhibit early decreased bacterial loads and significantly increased survival compared with those infected with WT Mab. ∆phzC mutant Mab also induced lower transcript levels of several pro-inflammatory cytokines (IL-1β, TNF-α, iNOS, IFN-γ) than those of WT Mab in the liver and lungs. In addition, there was impaired macrophage recruitment and decreased macrophage infection in tadpoles infected with the ∆phzC mutant, by tail wound inoculation, compared to those infected with the WT bacteria, as assayed by intravital confocal microscopy. These data underline the relevance and usefulness of X. laevis tadpoles as a novel comparative animal model to identify genetic determinants of Mab immunopathogenesis, suggesting a role for this novel and uncharacterized pathway in Mab pathogenesis and macrophage recruitment.
Collapse
Affiliation(s)
| | | | | | | | - Jacques Robert
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY 14642, USA; (N.J.M.); (D.D.); (L.A.B.); (M.S.P.J.)
| |
Collapse
|
5
|
Yuan X, Zhang J, Shi J, Liu W, Kritchenkov AS, Van Vlierberghe S, Wang L, Liu W, Gao J. Cotton Fabric-Reinforced Hydrogels with Excellent Mechanical and Broad-Spectrum Photothermal Antibacterial Properties. Polymers (Basel) 2024; 16:1346. [PMID: 38794537 PMCID: PMC11124890 DOI: 10.3390/polym16101346] [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: 04/07/2024] [Revised: 05/04/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024] Open
Abstract
Antibacterial hydrogel wound dressings hold great potential in eliminating bacteria and accelerating the healing process. However, it remains a challenge to fabricate hydrogel wound dressings that simultaneously exhibit excellent mechanical and photothermal antibacterial properties. Here we report the development of polydopamine-functionalized graphene oxide (rGO@PDA)/calcium alginate (CA)/Polypyrrole (PPy) cotton fabric-reinforced hydrogels (abbreviated as rGO@PDA/CA/PPy FHs) for tackling bacterial infections. The mechanical properties of hydrogels were greatly enhanced by cotton fabric reinforcement and an interpenetrating structure, while excellent broad-spectrum photothermal antibacterial properties based on the photothermal effect were obtained by incorporating PPy and rGO@PDA. Results indicated that rGO@PDA/CA/PPy FHs exhibited superior tensile strength in both the warp (289 ± 62.1 N) and weft directions (142 ± 23.0 N), similarly to cotton fabric. By incorporating PPy and rGO@PDA, the swelling ratio was significantly decreased from 673.5% to 236.6%, while photothermal conversion performance was significantly enhanced with a temperature elevated to 45.0 °C. Due to the synergistic photothermal properties of rGO@PDA and PPy, rGO@PDA/CA/PPy FHs exhibited excellent bacteria-eliminating efficiency for S. aureus (0.57%) and E. coli (3.58%) after exposure to NIR for 20 min. We believe that the design of fabric-reinforced hydrogels could serve as a guideline for developing hydrogel wound dressings with improved mechanical properties and broad-spectrum photothermal antibacterial properties for infected-wound treatment.
Collapse
Affiliation(s)
- Xiangnan Yuan
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Engineering Research Center of Technical Textiles, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, Donghua University, Shanghai 201620, China
| | - Jun Zhang
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Engineering Research Center of Technical Textiles, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, Donghua University, Shanghai 201620, China
| | - Jiayin Shi
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Engineering Research Center of Technical Textiles, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, Donghua University, Shanghai 201620, China
| | - Wenfu Liu
- College of Energy Engineering, Huanghuai University, Zhumadian 463000, China
| | - Andreii S. Kritchenkov
- Institute of Environmental Engineering, Department of Human Ecology and Bioelementology, Peoples’ Friendship University of Russia (RUDN University), Moscow 117198, Russia
- Institute of Technical Acoustics NAS of Belarus, 210009 Vitebsk, Belarus
| | - Sandra Van Vlierberghe
- Polymer Chemistry and Biomaterials Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, 9000 Ghent, Belgium
| | - Lu Wang
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Engineering Research Center of Technical Textiles, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, Donghua University, Shanghai 201620, China
| | - Wanjun Liu
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Engineering Research Center of Technical Textiles, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, Donghua University, Shanghai 201620, China
| | - Jing Gao
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Engineering Research Center of Technical Textiles, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, Donghua University, Shanghai 201620, China
| |
Collapse
|
6
|
Qian Y, Wang J, Geng X, Jia B, Wang L, Li YQ, Geng B, Huang W. Graphene Quantum Dots Nanoantibiotic-Sensitized TiO 2- x Heterojunctions for Sonodynamic-Nanocatalytic Therapy of Multidrug-Resistant Bacterial Infections. Adv Healthc Mater 2024:e2400659. [PMID: 38700840 DOI: 10.1002/adhm.202400659] [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: 02/21/2024] [Revised: 04/14/2024] [Indexed: 05/12/2024]
Abstract
The exploration of sonodynamic therapy (SDT) as a possible replacement for antibiotics by creating reactive oxygen species (ROS) is suggested as a non-drug-resistant theranostic method. However, the low-efficiency ROS generation and complex tumor microenvironment which can deplete ROS and promote tumor growth will cause the compromised antibacterial efficacy of SDT. Herein, through an oxygen vacancy engineering strategy, TiO2- x microspheres with an abundance of Ti3+ are synthesized using a straightforward reductant co-assembly approach. The narrow bandgaps and Ti3+/Ti4+-mediated multiple-enzyme catalytic activities of the obtained TiO2- x microspheres make them suitable for use as sonosensitizers and nanozymes. When graphene quantum dot (GQD) nanoantibiotics are deposited on TiO2- x microspheres, the resulting GQD/TiO2- x shows an increased production of ROS, which can be ascribed to the accelerated separation of electron-hole pairs, as well as the peroxidase-like catalytic activity mediated by Ti3+, and the depletion of glutathione mediated by Ti4+. Moreover, the catalytic activities of TiO2- x microspheres are amplified by the heterojunctions-accelerated carrier transfer. In addition, GQDs can inhibit Topo I, displaying strong antibacterial activity and further enhancing the antibacterial activity. Collectively, the combination of GQD/TiO2- x-mediated SDT/NCT with nanoantibiotics can result in a synergistic effect, allowing for multimodal antibacterial treatment that effectively promotes wound healing.
Collapse
Affiliation(s)
- Ying Qian
- Endocrinology Department, 960 Hospital of People's Liberation Army, Jinan, Shandong, 250031, P. R. China
| | - Jingming Wang
- Orthopedic Department, 960 Hospital of People's Liberation Army, Jinan, Shandong, 250031, P. R. China
| | - Xudong Geng
- Institute of Advanced Interdisciplinary Science, School of Physics, Shandong University, Jinan, 250100, P. R. China
| | - Bingqing Jia
- Institute of Advanced Interdisciplinary Science, School of Physics, Shandong University, Jinan, 250100, P. R. China
| | - Lei Wang
- Orthopedic Department, 960 Hospital of People's Liberation Army, Jinan, Shandong, 250031, P. R. China
| | - Yong-Qiang Li
- Institute of Advanced Interdisciplinary Science, School of Physics, Shandong University, Jinan, 250100, P. R. China
| | - Bijiang Geng
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Weimin Huang
- Orthopedic Department, 960 Hospital of People's Liberation Army, Jinan, Shandong, 250031, P. R. China
| |
Collapse
|
7
|
Li L, Xia X, Yang T, Sun Y, Liu X, Xu W, Lu M, Cui D, Wu Y. RNA methylation: A potential therapeutic target in autoimmune disease. Int Rev Immunol 2024; 43:160-177. [PMID: 37975549 DOI: 10.1080/08830185.2023.2280544] [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: 01/19/2023] [Accepted: 11/02/2023] [Indexed: 11/19/2023]
Abstract
Autoimmune diseases such as rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), and inflammatory bowel disease (IBD) are caused by the body's immune response to autoantigens. The pathogenesis of autoimmune diseases is unclear. Numerous studies have demonstrated that RNA methylation plays a key role in disease progression, which is essential for post-transcriptional regulation and has gradually become a broad regulatory mechanism that controls gene expression in various physiological processes, including RNA nuclear output, translation, splicing, and noncoding RNA processing. Here, we outline the writers, erasers, and readers of RNA methylation, including N6-methyladenosine (m6A), 2'-O-methylation (Nm), 2'-O-dimethyladenosine (m6Am), N1-methyladenosine (m1A), 5-methylcytidine (m5C) and N7-methylguanosine (m7G). As the role of RNA methylation modifications in the immune system and diseases is explained, the potential treatment value of these modifications has also been demonstrated. This review reports the relationship between RNA methylation and autoimmune diseases, highlighting the need for future research into the therapeutic potential of RNA modifications.
Collapse
Affiliation(s)
- Lele Li
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Xiaoping Xia
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Tian Yang
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Yuchao Sun
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Xueke Liu
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Wei Xu
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Mei Lu
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Dawei Cui
- The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yingping Wu
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Jinhua, China
| |
Collapse
|
8
|
Meng H, Zhang T, Wang Z, Zhu Y, Yu Y, Chen H, Chen J, Wang F, Yu Y, Hua X, Wang Y. High-Throughput Host-Microbe Single-Cell RNA Sequencing Reveals Ferroptosis-Associated Heterogeneity during Acinetobacter baumannii Infection. Angew Chem Int Ed Engl 2024; 63:e202400538. [PMID: 38419141 DOI: 10.1002/anie.202400538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 02/27/2024] [Accepted: 02/28/2024] [Indexed: 03/02/2024]
Abstract
Interactions between host and bacterial cells are integral to human physiology. The complexity of host-microbe interactions extends to different cell types, spatial aspects, and phenotypic heterogeneity, requiring high-resolution approaches to capture their full complexity. The latest breakthroughs in single-cell RNA sequencing (scRNA-seq) have opened up a new era of studies in host-pathogen interactions. Here, we first report a high-throughput cross-species dual scRNA-seq technology by using random primers to simultaneously capture both eukaryotic and bacterial RNAs (scRandom-seq). Using reference cells, scRandom-seq can detect individual eukaryotic and bacterial cells with high throughput and high specificity. Acinetobacter baumannii (A.b) is a highly opportunistic and nosocomial pathogen that displays resistance to many antibiotics, posing a significant threat to human health, calling for discoveries and treatment. In the A.b infection model, scRandom-seq witnessed polarization of THP-1 derived-macrophages and the intracellular A.b-induced ferroptosis-stress in host cells. The inhibition of ferroptosis by Ferrostatin-1 (Fer-1) resulted in the improvement of cell vitality and resistance to A.b infection, indicating the potential to resist related infections. scRandom-seq provides a high-throughput cross-species dual single-cell RNA profiling tool that will facilitate future discoveries in unraveling the complex interactions of host-microbe interactions in infection systems and tumor micro-environments.
Collapse
Affiliation(s)
- Hongen Meng
- Department of Laboratory Medicine of The First Affiliated Hospital & Liangzhu Laboratory, Zhejiang University School of Medicine, Hangzhou, 310030, China
| | - Tianyu Zhang
- Department of Laboratory Medicine of The First Affiliated Hospital & Liangzhu Laboratory, Zhejiang University School of Medicine, Hangzhou, 310030, China
| | - Zhang Wang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, People's Republic of China
| | - Yuyi Zhu
- M20 Genomics, Hangzhou, 311121, China
| | - Yingying Yu
- The Second Affiliated Hospital, School of Public Health, Zhejiang University School of Medicine, Hangzhou, 310016, China
| | - Hangfei Chen
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, People's Republic of China
| | - Jiaye Chen
- Department of Laboratory Medicine of The First Affiliated Hospital & Liangzhu Laboratory, Zhejiang University School of Medicine, Hangzhou, 310030, China
| | - Fudi Wang
- The Second Affiliated Hospital, School of Public Health, Zhejiang University School of Medicine, Hangzhou, 310016, China
| | - Yunsong Yu
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, People's Republic of China
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, 310016, China
- Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, 310016, China
| | - Xiaoting Hua
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, People's Republic of China
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, 310016, China
- Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, 310016, China
| | - Yongcheng Wang
- Department of Laboratory Medicine of The First Affiliated Hospital & Liangzhu Laboratory, Zhejiang University School of Medicine, Hangzhou, 310030, China
| |
Collapse
|
9
|
Chen H, Yang T, Xu Y, Liang B, Liu X, Cai Y. Anti-inflammatory and immunoregulatory effects of colistin sulphate on human PBMCs. J Cell Mol Med 2024; 28:e18322. [PMID: 38661452 PMCID: PMC11044820 DOI: 10.1111/jcmm.18322] [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: 11/19/2023] [Revised: 03/06/2024] [Accepted: 04/03/2024] [Indexed: 04/26/2024] Open
Abstract
In previous studies, CST has been identified as having an immunostimulatory effect on Caenorhabditis elegans and macrophage of rats. Here, we further investigated its immunomodulatory effects on human peripheral blood mononuclear cells (PBMCs). LPS-stimulated PBMCs inflammatory model was established. Flow cytometry was applied to measure phagocytosis of PBMCs. Cytokine mRNA and protein expression levels of LPS-stimulated PBMCs with or without CST were measured by qRT-PCR and ELISA. The transcriptomic profile of CST-treated PBMCs was investigated by RNA-sequencing. Gene Ontology (GO) and Kyoto Encylopedia of Genes and Genomes (KEGG) were applied to find potential signalling pathways. PBMCs showed a significant increase in phagocytic activity at 6 h after being incubated with CST at the concentration of 10 μg/mL. In the presence of LPS, CST maintained and promoted the expression of TNF-α and chemokine CCL24. The content of pro-inflammatory cytokines, such as IL-1β, IL-6 and IFN-γ, which were released from LPS-stimulated PBMCs, was reduced by CST at 6 h. Anti-inflammatory cytokines, such as IL-4, IL-13 and TGF-β1, were significantly increased by CST at 24 h. A total of 277 differentially expressed immune-related genes (DEIRGs) were detected and cytokine-cytokine receptor interaction was highly enriched. CST presented obvious anti-inflammatory and immunoregulatory effects in LPS-induced PBMCs inflammatory model not only by improving the ability of PBMCs to clear pathogens but also by decreasing pro-inflammatory cytokines and increasing anti-inflammatory cytokines. And the mechanism may be related to cytokine-cytokine receptor interaction.
Collapse
Affiliation(s)
- Huiling Chen
- Department of PharmacyCenter of Medicine Clinical Research, Medical Supplies Center, PLA General HospitalBeijingChina
- Department of PharmacyZigong Fourth People's HospitalZigongChina
| | - Tianli Yang
- Department of PharmacyCenter of Medicine Clinical Research, Medical Supplies Center, PLA General HospitalBeijingChina
- Medical School of Chinese PLAGraduate School of Chinese PLA General HospitalBeijingChina
| | - Yiran Xu
- Department of PharmacyCenter of Medicine Clinical Research, Medical Supplies Center, PLA General HospitalBeijingChina
- The Second Naval Hospital of Southern Theater Command of PLASanyaChina
| | - Beibei Liang
- Department of PharmacyCenter of Medicine Clinical Research, Medical Supplies Center, PLA General HospitalBeijingChina
| | - Xianyong Liu
- Medical School of Chinese PLAGraduate School of Chinese PLA General HospitalBeijingChina
- Department of Thoracic SurgeryThe First Medical Center, PLA General HospitalBeijingChina
| | - Yun Cai
- Department of PharmacyCenter of Medicine Clinical Research, Medical Supplies Center, PLA General HospitalBeijingChina
| |
Collapse
|
10
|
Nasser F, Oke MT, Knezevic S, D'Costa VM. Bacterial Pathogenesis: Assessment of Intracellular Positioning of Pathogen-Containing Vacuoles During Infection. Curr Protoc 2024; 4:e1021. [PMID: 38619090 DOI: 10.1002/cpz1.1021] [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: 04/16/2024]
Abstract
Intracellular bacterial pathogens implement a diverse array of strategies to target host cells and establish infection. For vacuolar pathogens, the process of pathogen-containing vacuole movement within host cells, termed intracellular trafficking, is central to both pathogen survival and infection progression. Typically a process mediated by secreted virulence factors that manipulate the host cytoskeletal machinery, internalized pathogen-containing vacuoles traffic to the site of replication to establish a unique replicative niche, and if applicable, traffic back toward the host cell periphery for cell-to-cell spread. As such, the intracellular positioning of pathogen-containing vacuoles represents a fundamental measure of infection progression. Here, we describe a fluorescence microscopy-based method to quantitatively assess bacterial intracellular positioning, using Salmonella enterica serovar Typhimurium infection of epithelial cells as a model. This experimental approach can be modified to study infection in diverse host cell types, and with a broad array of pathogens. The system can also be adapted to examine the kinetics of infection, identify secreted virulence factors that mediate host trafficking, investigate host factors that are targeted by the pathogen for trafficking, and assess functional domains within a virulence factor responsible for mediating the phenotype. Collectively, these tools can provide fundamental insight into the pathogenesis of a diverse array of intracellular bacterial pathogens, and new host factors that are hijacked to mediate infection. © 2024 The Authors. Current Protocols published by Wiley Periodicals LLC. Basic Protocol 1: Culture and preparation of host cells Alternate Protocol: Culture and preparation of host cells to assess host factor contribution to bacterial positioning Basic Protocol 2: Infection of epithelial cells with S. Typhimurium Basic Protocol 3: Fluorescence staining for analysis of bacterial positioning Basic Protocol 4: Fluorescence microscopy analysis of bacterial positioning.
Collapse
Affiliation(s)
- Farah Nasser
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Canada
| | - Mosopefoluwa T Oke
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Canada
- These authors contributed equally to this work
| | - Sara Knezevic
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Canada
- These authors contributed equally to this work
| | - Vanessa M D'Costa
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Canada
| |
Collapse
|
11
|
Mocăniță M, Martz K, D’Costa VM. Bacterial Pathogen-Mediated Suppression of Host Trafficking to Lysosomes: Fluorescence Microscopy-Based DQ-Red BSA Analysis. Bio Protoc 2024; 14:e4951. [PMID: 38464940 PMCID: PMC10917698 DOI: 10.21769/bioprotoc.4951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 12/04/2023] [Accepted: 02/05/2024] [Indexed: 03/12/2024] Open
Abstract
Intracellular bacterial pathogens have evolved to be adept at manipulating host cellular function for the benefit of the pathogen, often by means of secreted virulence factors that target host pathways for modulation. The lysosomal pathway is an essential cellular response pathway to intracellular pathogens and, as such, represents a common target for bacterial-mediated evasion. Here, we describe a method to quantitatively assess bacterial pathogen-mediated suppression of host cell trafficking to lysosomes, using Salmonella enterica serovar Typhimurium infection of epithelial cells as a model. This live-cell imaging assay involves the use of a BODIPY TR-X conjugate of BSA (DQ-Red BSA) that traffics to and fluoresces in functional lysosomes. This method can be adapted to study infection with a broad array of pathogens in diverse host cell types. It is capable of being applied to identify secreted virulence factors responsible for a phenotype of interest as well as domains within the bacterial protein that are important for mediating the phenotype. Collectively, these tools can provide invaluable insight into the mechanisms of pathogenesis of a diverse array of pathogenic bacteria, with the potential to uncover virulence factors that may be suitable targets for therapeutic intervention. Key features • Infection-based analysis of bacterial-mediated suppression of host trafficking to lysosomes, using Salmonella enterica serovar Typhimurium infection of human epithelial cells as a model. • Live microscopy-based analysis allows for the visualization of individually infected host cells and is amenable to phenotype quantification. • Assay can be adapted to a broad array of pathogens and diverse host cell types. • Assay can identify virulence factors mediating a phenotype and protein domains that mediate a phenotype.
Collapse
Affiliation(s)
- Mădălina Mocăniță
- Department of Biochemistry, Microbiology and
Immunology, University of Ottawa, Ottawa, ON, Canada
- Centre for Infection, Immunity and Inflammation,
University of Ottawa, Ottawa, ON, Canada
| | - Kailey Martz
- Department of Biochemistry, Microbiology and
Immunology, University of Ottawa, Ottawa, ON, Canada
- Centre for Infection, Immunity and Inflammation,
University of Ottawa, Ottawa, ON, Canada
| | - Vanessa M. D’Costa
- Department of Biochemistry, Microbiology and
Immunology, University of Ottawa, Ottawa, ON, Canada
- Centre for Infection, Immunity and Inflammation,
University of Ottawa, Ottawa, ON, Canada
| |
Collapse
|
12
|
Su Y, Hu J, Wang Y, Li Y, Xiao L, He X, Zhang Z, Cai J, Pan D, Chen Y, Geng B, Li P, Shen L. N-Heterocycle Modified Graphene Quantum Dots as Topoisomerase Targeted Nanoantibiotics for Combating Microbial Infections. Adv Healthc Mater 2024; 13:e2302659. [PMID: 38011489 DOI: 10.1002/adhm.202302659] [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: 09/05/2023] [Revised: 10/26/2023] [Indexed: 11/29/2023]
Abstract
Developing next-generation antibiotics to eliminate multidrug-resistant (MDR) bacteria/fungi and stubborn biofilms is challenging, because of the excessive use of currently available antibiotics. Herein, the fabrication of anti-infection graphene quantum dots (GQDs) is reported, as a new class of topoisomerase (Topo) targeting nanoantibiotics, by modification of rich N-heterocycles (pyridinic N) at edge sites. The membrane-penetrating, nucleus-localizing, DNA-binding GQDs not only damage the cell walls/membranes of bacteria or fungi, but also inhibit DNA-binding proteins, such as Topo I, thereby affecting DNA replication, transcription, and recombination. The obtained GQDs exhibit excellent broad-spectrum antimicrobial activity against non-MDR bacteria, MDR bacteria, endospores, and fungi. Beyond combating planktonic microorganisms, GQDs inhibit the formation of biofilms and can kill live bacteria inside biofilms. RNA-seq further demonstrates the upregulation of riboflavin biosynthesis genes, DNA repair related genes, and transport proteins related genes in methicillin-resistant S. aureus (MRSA) in response to the stress induced by GQDs. In vivo animal experiments indicate that the biocompatible GQDs promote wound healing in MRSA or C. albicans-infected skin wound models. Thus, GQDs may be a promising antibacterial and antifungal candidate for clinical applications in treating infected wounds and eliminating already-formed biofilms.
Collapse
Affiliation(s)
- Yan Su
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Jinyan Hu
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Yang Wang
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Yuan Li
- School of Life Sciences, Shanghai University, Shanghai, 200444, China
| | - Longfei Xiao
- Department of Orthopedic Surgery, Sheyang County People's Hospital, Yancheng, Jiangsu, 224300, China
| | - Xialing He
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Zhenlin Zhang
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Jinming Cai
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Dengyu Pan
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Yu Chen
- School of Life Sciences, Shanghai University, Shanghai, 200444, China
| | - Bijiang Geng
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Ping Li
- School of Life Sciences, Shanghai University, Shanghai, 200444, China
| | - Longxiang Shen
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
- Department of Orthopedic Surgery, Sheyang County People's Hospital, Yancheng, Jiangsu, 224300, China
| |
Collapse
|
13
|
Chen LH, Lin MY, Lin HC, Yang FW, Liao HW, Shiau CW, Chiu HC, Su JC. Discovery of new dibenzodiazepine derivatives as antibacterials against intracellular bacteria. RSC Med Chem 2024; 15:283-292. [PMID: 38283231 PMCID: PMC10809566 DOI: 10.1039/d3md00418j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 11/15/2023] [Indexed: 01/30/2024] Open
Abstract
The emergence and spread of multidrug-resistant bacteria underscore the critical need for novel antibacterial interventions. In our screening of 12 synthesized thienobenzodiazepines, pyridobenzodiazepines, and dibenzodiazepines, we successfully identified a small molecule compound SW33. Notably, SW33 demonstrated potent inhibitory activity against intracellular multidrug-resistant and fluoroquinolone-resistant strains of S. typhimurium in both macrophages and epithelial cells. Furthermore, SW33 was also effective against intramacrophagic Salmonella typhi, Yersinia enterocolitica, and Listeria monocytogenes. These significant findings suggest that SW33 possesses broad-spectrum activity against intracellular bacteria.
Collapse
Affiliation(s)
- Ling-Han Chen
- Department of Clinical Laboratory Sciences and Medical Biotechnology, College of Medicine, National Taiwan University Taipei 10048 Taiwan (+886) 22371-1574 (+886) 22312-3456 ext 66902
| | - Man-Yi Lin
- Institute of Biopharmaceutical Sciences, National Yang Ming Chiao Tung University Taipei 11221 Taiwan
| | - Hsueh-Chun Lin
- Department of Clinical Laboratory Sciences and Medical Biotechnology, College of Medicine, National Taiwan University Taipei 10048 Taiwan (+886) 22371-1574 (+886) 22312-3456 ext 66902
| | - Fan-Wei Yang
- Department of Pharmacy, National Yang Ming Chiao Tung University Taipei 11221 Taiwan (+886) 22826-7000 ext 66401
| | - Hsiao-Wei Liao
- Department of Pharmacy, National Yang Ming Chiao Tung University Taipei 11221 Taiwan (+886) 22826-7000 ext 66401
| | - Chung-Wai Shiau
- Institute of Biopharmaceutical Sciences, National Yang Ming Chiao Tung University Taipei 11221 Taiwan
| | - Hao-Chieh Chiu
- Department of Clinical Laboratory Sciences and Medical Biotechnology, College of Medicine, National Taiwan University Taipei 10048 Taiwan (+886) 22371-1574 (+886) 22312-3456 ext 66902
- Department of Laboratory Medicine, National Taiwan University Hospital, College of Medicine, National Taiwan University Taipei 10021 Taiwan
| | - Jung-Chen Su
- Department of Pharmacy, National Yang Ming Chiao Tung University Taipei 11221 Taiwan (+886) 22826-7000 ext 66401
| |
Collapse
|
14
|
Koirala R, Fongsaran C, Poston T, Rogge M, Rogers B, Thune R, Dubytska L. Edwardsiella ictaluri T3SS effector EseN is a phosphothreonine lyase that inactivates ERK1/2, p38, JNK, and PDK1 and modulates cell death in infected macrophages. Microbiol Spectr 2023; 11:e0300323. [PMID: 37796003 PMCID: PMC10714789 DOI: 10.1128/spectrum.03003-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 08/22/2023] [Indexed: 10/06/2023] Open
Abstract
IMPORTANCE This work has global significance in the catfish industry, which provides food for increasing global populations. E. ictaluri is a leading cause of disease loss, and EseN is an important player in E. ictaluri virulence. The E. ictaluri T3SS effector EseN plays an essential role in establishing infection, but the specific role EseN plays is not well characterized. EseN belongs to a family of phosphothreonine lyase effectors that specifically target host mitogen activated protein kinase (MAPK) pathways important in regulating host responses to infection. No phosphothreonine lyase equivalents are known in eukaryotes, making this family of effectors an attractive target for indirect narrow-spectrum antibiotics. Targeting of major vault protein and PDK1 kinase by EseN has not been reported in EseN homologs in other pathogens and may indicate unique functions of E. ictaluri EseN. EseN targeting of PDK1 is particularly interesting in that it is linked to an extraordinarily diverse group of cellular functions.
Collapse
Affiliation(s)
- Ranjan Koirala
- Department of Biological Sciences and Chemistry, Southern University and A & M College, Baton Rouge, Louisiana, USA
| | - Chanida Fongsaran
- Department of Biological Sciences and Chemistry, Southern University and A & M College, Baton Rouge, Louisiana, USA
| | - Tanisha Poston
- Department of Biological Sciences and Chemistry, Southern University and A & M College, Baton Rouge, Louisiana, USA
| | - Matthew Rogge
- Department of Biology, University of Wisconsin-Stevens Point, Stevens Point, Wisconsin, USA
| | - Bryan Rogers
- Department of Biological Sciences and Chemistry, Southern University and A & M College, Baton Rouge, Louisiana, USA
| | - Ronald Thune
- Department of Pathobiological Sciences, Louisiana State University School of Veterinary Medicine, Baton Rouge, Louisiana, USA
| | - Lidiya Dubytska
- Department of Biological Sciences and Chemistry, Southern University and A & M College, Baton Rouge, Louisiana, USA
| |
Collapse
|
15
|
Valiatti TB, Bessa-Neto FO, Santos FF, Silva RGB, Veiga R, Cassu-Corsi D, Moura TCF, Lobato ARF, Pignatari ACC, Souza CO, Brasiliense DM, Cayô R, Gales AC. Clonal dissemination of highly virulent Serratia marcescens strains producing KPC-2 in food-producing animals. One Health 2023; 17:100591. [PMID: 37388190 PMCID: PMC10302155 DOI: 10.1016/j.onehlt.2023.100591] [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: 12/22/2022] [Revised: 06/17/2023] [Accepted: 06/20/2023] [Indexed: 07/01/2023] Open
Abstract
Serratia marcescens is a Gram-negative bacterium presenting intrinsic resistance to polymyxins that has emerged as an important human pathogen. Although previous studies reported the occurrence of multidrug-resistance (MDR) S. marcescens isolates in the nosocomial settings, herein, we described isolates of this extensively drug-resistant (XDR) species recovered from stool samples of food-producing animals in the Brazilian Amazon region. Three carbapenem-resistant S. marcescens strains were recovered from stool samples of poultry and cattle. Genetic similarity analysis showed that these strains belonged to the same clone. Whole-genome sequencing of a representative strain (SMA412) revealed a resistome composed of genes encoding resistance to β-lactams [blaKPC-2, blaSRT-2], aminoglycosides [aac(6')-Ib3, aac(6')-Ic, aph(3')-VIa], quinolones [aac(6')-Ib-cr], sulfonamides [sul2], and tetracyclines [tet(41)]. In addition, the analysis of the virulome demonstrated the presence of important genes involved in the pathogenicity of this species (lipBCD, pigP, flhC, flhD, phlA, shlA, and shlB). Our data demonstrate that food-animal production can act as reservoirs for MDR and virulent strains of S. marcescens.
Collapse
Affiliation(s)
- Tiago Barcelos Valiatti
- Universidade Federal de São Paulo (UNIFESP), Laboratório Alerta, Division of Infectious Diseases, Department of Internal Medicine, Escola Paulista de Medicina (EPM), São Paulo, SP, Brazil
| | - Francisco Ozório Bessa-Neto
- Universidade Federal de São Paulo (UNIFESP), Laboratório Alerta, Division of Infectious Diseases, Department of Internal Medicine, Escola Paulista de Medicina (EPM), São Paulo, SP, Brazil
- Universidade Federal de São Paulo (UNIFESP), Laboratório de Imunologia e Bacteriologia (LIB), Setor de Biologia Molecular, Microbiologia e Imunologia, Departamento de Ciências Biológicas (DCB), Instituto de Ciências Ambientais, Químicas e Farmacêuticas (ICAQF), Diadema, SP, Brazil
| | - Fernanda Fernandes Santos
- Universidade Federal de São Paulo (UNIFESP), Laboratório Alerta, Division of Infectious Diseases, Department of Internal Medicine, Escola Paulista de Medicina (EPM), São Paulo, SP, Brazil
| | - Ramon Giovanni Brandão Silva
- Universidade Federal de São Paulo (UNIFESP), Laboratório Alerta, Division of Infectious Diseases, Department of Internal Medicine, Escola Paulista de Medicina (EPM), São Paulo, SP, Brazil
- Universidade Federal de São Paulo (UNIFESP), Laboratório de Imunologia e Bacteriologia (LIB), Setor de Biologia Molecular, Microbiologia e Imunologia, Departamento de Ciências Biológicas (DCB), Instituto de Ciências Ambientais, Químicas e Farmacêuticas (ICAQF), Diadema, SP, Brazil
| | - Ruanita Veiga
- Universidade Federal de São Paulo (UNIFESP), Laboratório Alerta, Division of Infectious Diseases, Department of Internal Medicine, Escola Paulista de Medicina (EPM), São Paulo, SP, Brazil
| | - Dandara Cassu-Corsi
- Universidade Federal de São Paulo (UNIFESP), Laboratório Alerta, Division of Infectious Diseases, Department of Internal Medicine, Escola Paulista de Medicina (EPM), São Paulo, SP, Brazil
| | - Tuane Carolina Ferreira Moura
- Seção de Bacteriologia e Micologia, Instituto Evandro Chagas (IEC), Secretaria de Ciência, Tecnologia, Inovação e Insumos Estratégicos em Saúde (SCTIE), Ministério da Saúde, Ananindeua, PA, Brazil
| | - Amalia Raiana Fonseca Lobato
- Seção de Bacteriologia e Micologia, Instituto Evandro Chagas (IEC), Secretaria de Ciência, Tecnologia, Inovação e Insumos Estratégicos em Saúde (SCTIE), Ministério da Saúde, Ananindeua, PA, Brazil
| | - Antonio Carlos Campos Pignatari
- Universidade Federal de São Paulo (UNIFESP), Laboratório Alerta, Division of Infectious Diseases, Department of Internal Medicine, Escola Paulista de Medicina (EPM), São Paulo, SP, Brazil
- Universidade Federal de São Paulo (UNIFESP), Laboratório Especial de Microbiologia Clínica (LEMC), Division of Infectious Diseases, Department of Internal Medicine, Escola Paulista de Medicina (EPM), São Paulo, SP, Brazil
| | - Cintya Oliveira Souza
- Seção de Bacteriologia e Micologia, Instituto Evandro Chagas (IEC), Secretaria de Ciência, Tecnologia, Inovação e Insumos Estratégicos em Saúde (SCTIE), Ministério da Saúde, Ananindeua, PA, Brazil
| | - Danielle Murici Brasiliense
- Seção de Bacteriologia e Micologia, Instituto Evandro Chagas (IEC), Secretaria de Ciência, Tecnologia, Inovação e Insumos Estratégicos em Saúde (SCTIE), Ministério da Saúde, Ananindeua, PA, Brazil
| | - Rodrigo Cayô
- Universidade Federal de São Paulo (UNIFESP), Laboratório Alerta, Division of Infectious Diseases, Department of Internal Medicine, Escola Paulista de Medicina (EPM), São Paulo, SP, Brazil
- Universidade Federal de São Paulo (UNIFESP), Laboratório de Imunologia e Bacteriologia (LIB), Setor de Biologia Molecular, Microbiologia e Imunologia, Departamento de Ciências Biológicas (DCB), Instituto de Ciências Ambientais, Químicas e Farmacêuticas (ICAQF), Diadema, SP, Brazil
| | - Ana Cristina Gales
- Universidade Federal de São Paulo (UNIFESP), Laboratório Alerta, Division of Infectious Diseases, Department of Internal Medicine, Escola Paulista de Medicina (EPM), São Paulo, SP, Brazil
- Universidade Federal de São Paulo (UNIFESP), Laboratório Especial de Microbiologia Clínica (LEMC), Division of Infectious Diseases, Department of Internal Medicine, Escola Paulista de Medicina (EPM), São Paulo, SP, Brazil
| | | |
Collapse
|
16
|
Liu H, Liu X, Wang H, Ren J, Qu X. A Homing Missile-Like Nanotherapeutic with Single-Atom Catalytic Sites for In Situ Elimination of Intracellular Bacterial Pathogens. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2207510. [PMID: 37231552 DOI: 10.1002/smll.202207510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 05/17/2023] [Indexed: 05/27/2023]
Abstract
Intracellular bacterial pathogens hiding in host cells tolerate the innate immune system and high-dose antibiotics, resulting in recurrent infections that are difficult to treat. Herein, a homing missile-like nanotherapeutic (FeSAs@Sa.M) composed of a single-atom iron nanozyme (FeSAs) core coated with infected macrophage membrane (Sa.M) is developed for in situ elimination of intracellular methicillin-resistant S. aureus (MRSA). Mechanically, the FeSAs@Sa.M initially binds to the extracellular MRSA via the bacterial recognition ability of the Sa.M component. Subsequently, the FeSAs@Sa.M can be transported to the intracellular MRSA-located regions in the host cell like a homing missile under the guidance of the extracellular MRSA to which it is attached, generating highly toxic reactive oxygen species (ROS) for intracellular MRSA killing via the enzymatic activities of the FeSAs core. The FeSAs@Sa.M is far superior to FeSAs in killing intracellular MRSA, proposing a feasible strategy for treating intracellular infections by in situ generating ROS in bacterial residing regions.
Collapse
Affiliation(s)
- Hao Liu
- State Key Laboratory of Rare Earth Resource Utilization, Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Xuemeng Liu
- State Key Laboratory of Rare Earth Resource Utilization, Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Huan Wang
- State Key Laboratory of Rare Earth Resource Utilization, Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China
| | - Jinsong Ren
- State Key Laboratory of Rare Earth Resource Utilization, Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Xiaogang Qu
- State Key Laboratory of Rare Earth Resource Utilization, Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| |
Collapse
|
17
|
Qu M, Zhang H, Cheng P, Wubshet AK, Yin X, Wang X, Sun Y. Histone deacetylase 6's function in viral infection, innate immunity, and disease: latest advances. Front Immunol 2023; 14:1216548. [PMID: 37638049 PMCID: PMC10450946 DOI: 10.3389/fimmu.2023.1216548] [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: 05/04/2023] [Accepted: 07/14/2023] [Indexed: 08/29/2023] Open
Abstract
In the family of histone-deacetylases, histone deacetylase 6 (HDAC6) stands out. The cytoplasmic class IIb histone deacetylase (HDAC) family is essential for many cellular functions. It plays a crucial and debatable regulatory role in innate antiviral immunity. This review summarises the current state of our understanding of HDAC6's structure and function in light of the three mechanisms by which it controls DNA and RNA virus infection: cytoskeleton regulation, host innate immune response, and autophagy degradation of host or viral proteins. In addition, we summed up how HDAC6 inhibitors are used to treat a wide range of diseases, and how its upstream signaling plays a role in the antiviral mechanism. Together, the findings of this review highlight HDAC6's importance as a new therapeutic target in antiviral immunity, innate immune response, and some diseases, all of which offer promising new avenues for the development of drugs targeting the immune response.
Collapse
Affiliation(s)
- Min Qu
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Huijun Zhang
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Pengyuan Cheng
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Ashenafi Kiros Wubshet
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
- Department of Basic and Diagnostic Sciences, College of Veterinary Science, Mekelle University, Mekelle, Tigray, Ethiopia
| | - Xiangping Yin
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xiangwei Wang
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Yuefeng Sun
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| |
Collapse
|
18
|
Mitosch K, Beyß M, Phapale P, Drotleff B, Nöh K, Alexandrov T, Patil KR, Typas A. A pathogen-specific isotope tracing approach reveals metabolic activities and fluxes of intracellular Salmonella. PLoS Biol 2023; 21:e3002198. [PMID: 37594988 PMCID: PMC10468081 DOI: 10.1371/journal.pbio.3002198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 08/30/2023] [Accepted: 06/16/2023] [Indexed: 08/20/2023] Open
Abstract
Pathogenic bacteria proliferating inside mammalian host cells need to rapidly adapt to the intracellular environment. How they achieve this and scavenge essential nutrients from the host has been an open question due to the difficulties in distinguishing between bacterial and host metabolites in situ. Here, we capitalized on the inability of mammalian cells to metabolize mannitol to develop a stable isotopic labeling approach to track Salmonella enterica metabolites during intracellular proliferation in host macrophage and epithelial cells. By measuring label incorporation into Salmonella metabolites with liquid chromatography-mass spectrometry (LC-MS), and combining it with metabolic modeling, we identify relevant carbon sources used by Salmonella, uncover routes of their metabolization, and quantify relative reaction rates in central carbon metabolism. Our results underline the importance of the Entner-Doudoroff pathway (EDP) and the phosphoenolpyruvate carboxylase for intracellularly proliferating Salmonella. More broadly, our metabolic labeling strategy opens novel avenues for understanding the metabolism of pathogens inside host cells.
Collapse
Affiliation(s)
- Karin Mitosch
- Genome Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Martin Beyß
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, Jülich, Germany
- RWTH Aachen University, Computational Systems Biotechnology, Aachen, Germany
| | - Prasad Phapale
- Metabolomics Core Facility, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Bernhard Drotleff
- Metabolomics Core Facility, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Katharina Nöh
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Theodore Alexandrov
- Metabolomics Core Facility, European Molecular Biology Laboratory, Heidelberg, Germany
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
- Molecular Medicine Partnership Unit, European Molecular Biology Laboratory, Heidelberg, Germany
- BioInnovation Institute, Copenhagen, Denmark
| | - Kiran R. Patil
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
- Medical Research Council Toxicology Unit, University of Cambridge, Cambridge, United Kingdom
| | - Athanasios Typas
- Genome Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| |
Collapse
|
19
|
Yang Y, Ma T, Zhang J, Tang Y, Tang M, Zou C, Zhang Y, Wu M, Hu X, Liu H, Zhang Q, Liu Y, Li H, Li JS, Liu Z, Li J, Li T, Zhou X. An integrated multi-omics analysis of identifies distinct molecular characteristics in pulmonary infections of Pseudomonas aeruginosa. PLoS Pathog 2023; 19:e1011570. [PMID: 37643174 PMCID: PMC10464988 DOI: 10.1371/journal.ppat.1011570] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 07/21/2023] [Indexed: 08/31/2023] Open
Abstract
Pseudomonas aeruginosa (P. aeruginosa) can cause severe acute infections, including pneumonia and sepsis, and cause chronic infections, commonly in patients with structural respiratory diseases. However, the molecular and pathophysiological mechanisms of P. aeruginosa respiratory infection are largely unknown. Here, we performed assays for transposase-accessible chromatin using sequencing (ATAC-seq), transcriptomics, and quantitative mass spectrometry-based proteomics and ubiquitin-proteomics in P. aeruginosa-infected lung tissues for multi-omics analysis, while ATAC-seq and transcriptomics were also examined in P. aeruginosa-infected mouse macrophages. To identify the pivotal factors that are involved in host immune defense, we integrated chromatin accessibility and gene expression to investigate molecular changes in P. aeruginosa-infected lung tissues combined with proteomics and ubiquitin-proteomics. Our multi-omics investigation discovered a significant concordance for innate immunological and inflammatory responses following P. aeruginosa infection between hosts and alveolar macrophages. Furthermore, we discovered that multi-omics changes in pioneer factors Stat1 and Stat3 play a crucial role in the immunological regulation of P. aeruginosa infection and that their downstream molecules (e.g., Fas) may be implicated in both immunosuppressive and inflammation-promoting processes. Taken together, these findings indicate that transcription factors and their downstream signaling molecules play a critical role in the mobilization and rebalancing of the host immune response against P. aeruginosa infection and may serve as potential targets for bacterial infections and inflammatory diseases, providing insights and resources for omics analyses.
Collapse
Affiliation(s)
- Yang Yang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Teng Ma
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Jun Zhang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Yu Tang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Miao Tang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Chaoyu Zou
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Yige Zhang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Mingbo Wu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Xueli Hu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Huan Liu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Qianhua Zhang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Yilin Liu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Hongliang Li
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Jing Shirley Li
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Zhuochong Liu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Jing Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Taiwen Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xikun Zhou
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| |
Collapse
|
20
|
Plocica J, Guo F, Das JK, Kobayashi KS, Ficht TA, Alaniz RC, Song J, de Figueiredo P. Engineering live attenuated vaccines: Old dogs learning new tricks. J Transl Autoimmun 2023; 6:100198. [PMID: 37090898 PMCID: PMC10113845 DOI: 10.1016/j.jtauto.2023.100198] [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: 02/17/2023] [Revised: 03/24/2023] [Accepted: 03/26/2023] [Indexed: 03/29/2023] Open
Abstract
Autoimmune diseases such as rheumatoid arthritis and type 1 diabetes are increasingly common global problems. Concerns about increases in the prevalence of such diseases and the limited efficacy of conventional treatment regimens necessitates new therapies to address these challenges. Autoimmune disease severity and dysbiosis are interconnected. Although probiotics have been established as a therapy to rebalance the microbiome and suppress autoimmune symptoms, these microbes tend to lack a number of advantageous qualities found in non-commensal bacteria. Through attenuation and genetic manipulation, these non-commensal bacteria have been engineered into recombinant forms that offer malleable platforms capable of addressing the immune imbalances found in RA and T1D. Such bacteria have been engineered to express valuable gene products known to suppress autoimmunity such as anti-inflammatory cytokines, autoantigens, and enzymes synthesizing microbial metabolites. This review will highlight current and emerging trends in the field and discuss how they may be used to prevent and control autoimmune diseases.
Collapse
Affiliation(s)
- Julia Plocica
- Department of Microbial Pathogenesis and Immunology, Texas A&M University Health Science Center, Bryan, TX, 77807, USA
| | - Fengguang Guo
- Department of Microbial Pathogenesis and Immunology, Texas A&M University Health Science Center, Bryan, TX, 77807, USA
| | - Jugal Kishore Das
- Department of Microbial Pathogenesis and Immunology, Texas A&M University Health Science Center, Bryan, TX, 77807, USA
| | - Koichi S. Kobayashi
- Department of Microbial Pathogenesis and Immunology, Texas A&M University Health Science Center, Bryan, TX, 77807, USA
- Department of Immunology, Graduate School of Medicine, Hokkaido University Kita 15, Nishi 7, Kita-ku, Sapporo, 060-8638, Japan
- Institute of Vaccine Research and Development, Hokkaido University, Kita 15, Nishi 7, Kita-ku, Sapporo, 060-8638, Japan
| | - Thomas A. Ficht
- Department of Veterinary Pathobiology, Texas A&M University, College Station, TX, 77845, USA
| | - Robert C. Alaniz
- Department of Microbial Pathogenesis and Immunology, Texas A&M University Health Science Center, Bryan, TX, 77807, USA
| | - Jianxun Song
- Department of Microbial Pathogenesis and Immunology, Texas A&M University Health Science Center, Bryan, TX, 77807, USA
| | - Paul de Figueiredo
- Department of Microbial Pathogenesis and Immunology, Texas A&M University Health Science Center, Bryan, TX, 77807, USA
- Department of Veterinary Pathobiology, Texas A&M University, College Station, TX, 77845, USA
| |
Collapse
|
21
|
Li W, Shao L, Liu J, Sheng J, Zheng Q, Wang M. Intracellular delivery of bacterial effectors for cancer therapy using biodegradable lipid nanoparticles. Biomater Sci 2023; 11:3172-3179. [PMID: 36919841 DOI: 10.1039/d3bm00008g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
Bacterial effector proteins are virulence factors that are secreted and mediate orthogonal post-translational modifications of proteins that are not found naturally in mammalian systems. They hold great promise for developing biotherapeutics by regulating malignant cell signaling in a specific and targeted manner. However, delivering bacterial effectors into disease cells poses a significant challenge to their therapeutic potential. In this study, we report on the design of a combinatorial library of bioreducible lipid nanoparticles containing disulfide bonds for highly efficient bacterial effector delivery and potential cancer therapy. A leading lipid, PPPDA-O16B, identified from the library, can encapsulate and deliver DNA plasmids into cells. The gene cargo is released in response to the reductive cellular environment that is upregulated in cancer cells, leading to enhanced gene delivery and protein expression efficiency. Furthermore, we demonstrate that PPPDA-O16B can deliver the bacterial effector protein, DUF5, to degrade mutant RAS and inactivate downstream MAPK signaling cascades to suppress cancer cell growth in vitro and in tumor-bearing mouse xenografts. This strategy of delivering bacterial effectors using biodegradable lipid nanoparticles can be expanded for cancer cell signaling regulation and antitumor studies.
Collapse
Affiliation(s)
- Wenting Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Leihou Shao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ji Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinhan Sheng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qizhen Zheng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ming Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
22
|
Li B, Wang W, Zhao L, Yan D, Li X, Gao Q, Zheng J, Zhou S, Lai S, Feng Y, Zhang J, Jiang H, Long C, Gan W, Chen X, Wang D, Tang BZ, Liao Y. Multifunctional AIE Nanosphere-Based "Nanobomb" for Trimodal Imaging-Guided Photothermal/Photodynamic/Pharmacological Therapy of Drug-Resistant Bacterial Infections. ACS NANO 2023; 17:4601-4618. [PMID: 36826229 DOI: 10.1021/acsnano.2c10694] [Citation(s) in RCA: 36] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Injudicious or inappropriate use of antibiotics has led to the prevalence of drug-resistant bacteria, posing a huge menace to global health. Here, a self-assembled aggregation-induced emission (AIE) nanosphere (AIE-PEG1000 NPs) that simultaneously possesses near-infrared region II (NIR-II) fluorescence emissive, photothermal, and photodynamic properties is prepared using a multifunctional AIE luminogen (AIE-4COOH). The AIE-PEG1000 NPs were encapsulated with teicoplanin (Tei) and ammonium bicarbonate (AB) into lipid nanovesicles to form a laser-activated "nanobomb" (AIE-Tei@AB NVs) for the multimodal theranostics of drug-resistant bacterial infections. In vivo experiments validate that the "nanobomb" enables high-performance NIR-II fluorescence, infrared thermal, and ultrasound (AB decomposition during the photothermal process to produce numerous CO2/NH3 bubbles, which is an efficient ultrasound contrast agent) imaging of multidrug-resistant bacteria-infected foci after intravenous administration of AIE-Tei@AB NVs followed by 660 nm laser stimulation. The highly efficient photothermal and photodynamic features of AIE-Tei@AB NVs, combined with the excellent pharmacological property of rapidly released Tei during bubble generation and NV disintegration, collectively promote broad-spectrum eradication of three clinically isolated multidrug-resistant bacteria strains and rapid healing of infected wounds. This multimodal imaging-guided synergistic therapeutic strategy can be extended for the theranostics of superbugs.
Collapse
Affiliation(s)
- Bin Li
- Department of Burn Surgery & Department of Clinical Laboratory, The First People's Hospital of Foshan, Foshan 528000, Guangdong, China
| | - Wei Wang
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou 510091, Guangdong, China
| | - Lu Zhao
- Department of Burn Surgery & Department of Clinical Laboratory, The First People's Hospital of Foshan, Foshan 528000, Guangdong, China
| | - Dingyuan Yan
- 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 518060, Guangdong, China
| | - Xiaoxue Li
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou 510091, Guangdong, China
| | - Qiuxia Gao
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou 510091, Guangdong, China
| | - Judun Zheng
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou 510091, Guangdong, China
| | - Sitong Zhou
- Department of Burn Surgery & Department of Clinical Laboratory, The First People's Hospital of Foshan, Foshan 528000, Guangdong, China
| | - Shanshan Lai
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou 510091, Guangdong, China
| | - Yi Feng
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou 510091, Guangdong, China
| | - Jie Zhang
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou 510091, Guangdong, China
| | - Hang Jiang
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou 510091, Guangdong, China
| | - Chengmin Long
- Department of Burn Surgery & Department of Clinical Laboratory, The First People's Hospital of Foshan, Foshan 528000, Guangdong, China
| | - Wenjun Gan
- Department of Burn Surgery & Department of Clinical Laboratory, The First People's Hospital of Foshan, Foshan 528000, Guangdong, China
| | - Xiaodong Chen
- Department of Burn Surgery & Department of Clinical Laboratory, The First People's Hospital of Foshan, Foshan 528000, Guangdong, 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 518060, Guangdong, China
| | - Ben Zhong Tang
- 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 518060, Guangdong, China
- School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen 518172, Guangdong, China
| | - Yuhui Liao
- Department of Burn Surgery & Department of Clinical Laboratory, The First People's Hospital of Foshan, Foshan 528000, Guangdong, China
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou 510091, Guangdong, China
- Center for Infection and Immunity, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, Guangdong, China
| |
Collapse
|
23
|
The Impact of Colistin Resistance on the Activation of Innate Immunity by Lipopolysaccharide Modification. Infect Immun 2023; 91:e0001223. [PMID: 36722977 PMCID: PMC9933656 DOI: 10.1128/iai.00012-23] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Colistin resistance is acquired by different lipopolysaccharide (LPS) modifications. We proposed to evaluate the of effect in vivo colistin resistance acquisition on the innate immune response. We used a pair of ST11 clone Klebsiella pneumoniae strains: an OXA-48, CTX-M-15 K. pneumoniae strain susceptible to colistin (CS-Kp) isolated from a urinary infection and its colistin-resistant variant (CR-Kp) from the same patient after prolonged treatment with colistin. No mutation of previously described genes for colistin resistance (pmrA, pmrB, mgrB, phoP/Q, arnA, arnC, arnT, ugdH, and crrAB) was found in the CR-Kp genome; however, LPS modifications were characterized by negative-ion matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometry. The strains were cocultured with human monocytes to determine their survival after phagocytosis and induction to apoptosis. Also, monocytes were stimulated with bacterial LPS to study cytokine and immune checkpoint production. The addition of 4-amino-4-deoxy-l-arabinose (Ara4N) to lipid A of CR-Kp accounted for the colistin resistance. CR-Kp survived significantly longer inside human monocytes after being phagocytosed than did the CS-Kp strain. In addition, LPS from CR-Kp induced both higher apoptosis in monocytes and higher levels of cytokine and immune checkpoint production than LPS from CS-Kp. Our data reveal a variable impact of colistin resistance on the innate immune system, depending on the responsible mechanism. Adding Ara4N to LPS in K. pneumoniae increases bacterial survival after phagocytosis and elicits a higher inflammatory response than its colistin-susceptible counterpart.
Collapse
|
24
|
Oda K, Wlodawer A. Overview of the Properties of Glutamic Peptidases That Are Present in Plant and Bacterial Pathogens and Play a Role in Celiac Disease and Cancer. Biochemistry 2023; 62:672-694. [PMID: 36705990 DOI: 10.1021/acs.biochem.2c00622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Seven peptidase (proteinase) families─aspartic, cysteine, metallo, serine, glutamic, threonine, and asparagine─are in the peptidase database MEROPS, version 12.4 (https://www.ebi.ac.uk/merops/). The glutamic peptidase family is assigned two clans, GA and GB, and comprises six subfamilies. This perspective summarizes the unique features of their representatives. (1) G1, scytalidoglutamic peptidase, has a β-sandwich structure containing catalytic residues glutamic acid (E) and glutamine (Q), thus the name eqolisin. Most family members are pepstatin-insensitive and act as plant pathogens. (2) G2, preneck appendage protein, originates in phages, is a transmembrane protein, and its catalytic residues consist of glutamic and aspartic acids. (3) G3, strawberry mottle virus glutamic peptidase, originates in viruses and has a β-sandwich structure with catalytic residues E and Q. Neprosin has propyl endopeptidase activity, is associated with celiac disease, has a β-sandwich structure, and contains catalytic residues E-E and Q-tryptophan. (4) G4, Tiki peptidase, of the erythromycin esterase family, is a transmembrane protein, and its catalytic residues are E-histidine pairs. (5) G5, RCE1 peptidase, is associated with cancer, is a transmembrane protein, and its catalytic residues are E-histidine and asparagine-histidine. Microcystinase, a bacterial toxin, is a transmembrane protein with catalytic residues E-histidine and asparagine-histidine. (6) G6, Ras/Rap1-specific peptidase, is a bacterial pathogen, a transmembrane protein, and its catalytic residues are E-histidine pairs. This family's common features are that their catalytic residues consist of a glutamic acid and another (variable) amino acid and that they exhibit a diversity of biological functions─plant and bacterial pathogens and involvement in celiac disease and cancer─that suggests they are viable drug targets.
Collapse
Affiliation(s)
- Kohei Oda
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-Ku, Kyoto 606-8585, Japan
| | - Alexander Wlodawer
- Center for Structural Biology, National Cancer Institute, Frederick, Maryland 21702, United States
| |
Collapse
|
25
|
Infection and Immunity. Clin Immunol 2023. [DOI: 10.1016/b978-0-12-818006-8.00007-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
26
|
Guo X, Zeng H, Li M, Xiao Y, Gu G, Song Z, Shuai X, Guo J, Huang Q, Zhou B, Chu Y, Jiao H. The mechanism of chronic intracellular infection with Brucella spp. Front Cell Infect Microbiol 2023; 13:1129172. [PMID: 37143745 PMCID: PMC10151771 DOI: 10.3389/fcimb.2023.1129172] [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: 12/21/2022] [Accepted: 03/31/2023] [Indexed: 05/06/2023] Open
Abstract
Globally, brucellosis is a widespread zoonotic disease. It is prevalent in more than 170 countries and regions. It mostly damages an animal's reproductive system and causes extreme economic losses to the animal husbandry industry. Once inside cells, Brucella resides in a vacuole, designated the BCV, which interacts with components of the endocytic and secretory pathways to ensure bacterial survival. Numerous studies conducted recently have revealed that Brucella's ability to cause a chronic infection depends on how it interacts with the host. This paper describes the immune system, apoptosis, and metabolic control of host cells as part of the mechanism of Brucella survival in host cells. Brucella contributes to both the body's non-specific and specific immunity during chronic infection, and it can aid in its survival by causing the body's immune system to become suppressed. In addition, Brucella regulates apoptosis to avoid being detected by the host immune system. The BvrR/BvrS, VjbR, BlxR, and BPE123 proteins enable Brucella to fine-tune its metabolism while also ensuring its survival and replication and improving its ability to adapt to the intracellular environment.
Collapse
Affiliation(s)
- Xiaoyi Guo
- The College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Hui Zeng
- The College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Mengjuan Li
- The College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Yu Xiao
- The College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Guojing Gu
- The College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Zhenhui Song
- The College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Xuehong Shuai
- The College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Jianhua Guo
- The College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Qingzhou Huang
- The College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Bo Zhou
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, Jilin, China
- *Correspondence: Bo Zhou, ; Yuefeng Chu, ; Hanwei Jiao,
| | - Yuefeng Chu
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
- *Correspondence: Bo Zhou, ; Yuefeng Chu, ; Hanwei Jiao,
| | - Hanwei Jiao
- The College of Veterinary Medicine, Southwest University, Chongqing, China
- The Immunology Research Center, Medical Research Institute, Southwest University, Chongqing, China
- *Correspondence: Bo Zhou, ; Yuefeng Chu, ; Hanwei Jiao,
| |
Collapse
|
27
|
Kubatzky KF. Pasteurella multocida toxin - lessons learned from a mitogenic toxin. Front Immunol 2022; 13:1058905. [PMID: 36591313 PMCID: PMC9800868 DOI: 10.3389/fimmu.2022.1058905] [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: 09/30/2022] [Accepted: 11/29/2022] [Indexed: 12/23/2022] Open
Abstract
The gram-negative, zoonotic bacterium Pasteurella multocida was discovered in 1880 and found to be the causative pathogen of fowl cholera. Pasteurella-related diseases can be found in domestic and wild life animals such as buffalo, sheep, goat, deer and antelope, cats, dogs and tigers and cause hemorrhagic septicemia in cattle, rhinitis or pneumonia in rabbits or fowl cholera in poultry and birds. Pasteurella multocida does not play a major role in the immune-competent human host, but can be found after animal bites or in people with close contact to animals. Toxigenic strains are most commonly found in pigs and express a phage-encoded 146 kDa protein, the Pasteurella multocida toxin (PMT). Toxin-expressing strains cause atrophic rhinitis where nasal turbinate bones are destroyed through the inhibition of bone building osteoblasts and the activation of bone resorbing osteoclasts. After its uptake through receptor-mediated endocytosis, PMT specifically targets the alpha subunit of several heterotrimeric G proteins and constitutively activates them through deamidation of a glutamine residue to glutamate in the alpha subunit. This results in cytoskeletal rearrangement, proliferation, differentiation and survival of cells. Because of the toxin's mitogenic effects, it was suggested that it might have carcinogenic properties, however, no link between Pasteurella infections and cell transformation could be established, neither in tissue culture models nor through epidemiological data. In the recent years it was shown that the toxin not only affects bone, but also the heart as well as basically all cells of innate and adaptive immunity. During the last decade the focus of research shifted from signal transduction processes to understanding how the bacteria might benefit from a bone-destroying toxin. The primary function of PMT seems to be the modulation of immune cell activation which at the same time creates an environment permissive for osteoclast formation. While the disease is restricted to pigs, the implications of the findings from PMT research can be used to explore human diseases and have a high translational potential. In this review our current knowledge will be summarized and it will be discussed what can be learned from using PMT as a tool to understand human pathologies.
Collapse
Affiliation(s)
- Katharina F. Kubatzky
- Department of Infectious Diseases, Medical Microbiology and Hygiene, Heidelberg University, Heidelberg, Germany
| |
Collapse
|
28
|
Chen X, Bi Y, Huang M, Cao H, Qin H. Why Is Tantalum Less Susceptible to Bacterial Infection? J Funct Biomater 2022; 13:jfb13040264. [PMID: 36547523 PMCID: PMC9781538 DOI: 10.3390/jfb13040264] [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: 10/02/2022] [Revised: 11/16/2022] [Accepted: 11/19/2022] [Indexed: 11/23/2022] Open
Abstract
Periprosthetic infection is one of the trickiest clinical problems, which often leads to disastrous consequences. The emergence of tantalum and its derivatives provides novel ideas and effective methods to solve this problem and has attracted great attention. However, tantalum was reported to have different anti-infective effects in vivo and in vitro, and the inherent antibacterial capability of tantalum is still controversial, which may restrict its development as an antibacterial material to some extent. In this study, the polished tantalum was selected as the experimental object, the implant-related tibia osteomyelitis model was first established to observe whether it has an anti-infective effect in vivo compared to titanium, and the early studies found that the tantalum had a lower infectious state in the implant-related tibia osteomyelitis model in vivo than titanium. However, further in vitro studies found that the polished tantalum was not superior to the titanium against bacterial adhesion and antibacterial efficacy. In addition, we focus on the state of interaction between cells, bacteria and materials to restore the internal environment as realistically as possible. We found that the adhesion of fibroblasts to tantalum was faster and better than that of titanium. Moreover, what is more, interesting is that, in the early period, bacteria were more likely to adhere to cells that had already attached to the surface of tantalum than to the bare surface of it, and over time, the cells eventually fell off the biomaterials and took away more bacteria in tantalum, making it possible for tantalum to reduce the probability of infection in the body through this mechanism. Moreover, these results also explained the phenomenon of the "race for the surface" from a completely different perspective. This study provides a new idea for further exploring the relationship between bacteria and host tissue cells on the implant surface and a meaningful clue for optimizing the preparation of antibacterial implants in the future.
Collapse
Affiliation(s)
- Xin Chen
- Department of Orthopedic Surgery, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
- Department of Laboratory Medicine, The Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China
| | - Yikang Bi
- Department of Orthopedics, The Eighth People’s Hospital, Jiang Su University, Shanghai 200235, China
- Department of Orthopedics, Xuhui Branch of Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200235, China
| | - Moran Huang
- Department of Orthopedic Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
| | - Huiliang Cao
- Interfacial Electrochemistry and Biomaterials, Lab of Low-Dimensional Materials Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai 200237, China
- Correspondence: (H.C.); (H.Q.)
| | - Hui Qin
- Department of Orthopedic Surgery, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
- Correspondence: (H.C.); (H.Q.)
| |
Collapse
|
29
|
Sequestration of gut pathobionts in intraluminal casts, a mechanism to avoid dysregulated T cell activation by pathobionts. Proc Natl Acad Sci U S A 2022; 119:e2209624119. [PMID: 36201539 PMCID: PMC9565271 DOI: 10.1073/pnas.2209624119] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
T cells that express the transcription factor RORγ, regulatory (Treg), or conventional (Th17) are strongly influenced by intestinal symbionts. In a genetic approach to identify mechanisms underlying this influence, we performed a screen for microbial genes implicated, in germfree mice monocolonized with Escherichia coli Nissle. The loss of capsule-synthesis genes impaired clonal expansion and differentiation of intestinal RORγ+ T cells. Mechanistic exploration revealed that the capsule-less mutants remained able to induce species-specific immunoglobulin A (IgA) and were highly IgA-coated. They could still trigger myeloid cells, and more effectively damaged epithelial cells in vitro. Unlike wild-type microbes, capsule-less mutants were mostly engulfed in intraluminal casts, large agglomerates composed of myeloid cells extravasated into the gut lumen. We speculate that sequestration in luminal casts of potentially harmful microbes, favored by IgA binding, reduces the immune system's actual exposure, preserving host-microbe equilibrium. The variable immunostimulation by microbes that has been charted in recent years may not solely be conditioned by triggering molecules or metabolites but also by physical limits to immune system exposure.
Collapse
|
30
|
Liu C, Makrinioti H, Saglani S, Bowman M, Lin LL, Camargo CA, Hasegawa K, Zhu Z. Microbial dysbiosis and childhood asthma development: Integrated role of the airway and gut microbiome, environmental exposures, and host metabolic and immune response. Front Immunol 2022; 13:1028209. [PMID: 36248891 PMCID: PMC9561420 DOI: 10.3389/fimmu.2022.1028209] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 09/20/2022] [Indexed: 12/12/2022] Open
Abstract
Asthma is a chronic and heterogeneous respiratory disease with many risk factors that typically originate during early childhood. A complex interplay between environmental factors and genetic predisposition is considered to shape the lung and gut microbiome in early life. The growing literature has identified that changes in the relative abundance of microbes (microbial dysbiosis) and reduced microbial diversity, as triggers of the airway-gut axis crosstalk dysregulation, are associated with asthma development. There are several mechanisms underlying microbial dysbiosis to childhood asthma development pathways. For example, a bacterial infection in the airway of infants can lead to the activation and/or dysregulation of inflammatory pathways that contribute to bronchoconstriction and bronchial hyperresponsiveness. In addition, gut microbial dysbiosis in infancy can affect immune development and differentiation, resulting in a suboptimal balance between innate and adaptive immunity. This evolving dysregulation of secretion of pro-inflammatory mediators has been associated with persistent airway inflammation and subsequent asthma development. In this review, we examine current evidence around associations between the airway and gut microbial dysbiosis with childhood asthma development. More specifically, this review focuses on discussing the integrated roles of environmental exposures, host metabolic and immune responses, airway and gut microbial dysbiosis in driving childhood asthma development.
Collapse
Affiliation(s)
- Conglin Liu
- Immunology & Inflammation Research Therapeutic Area, Sanofi US, Cambridge, MA, United States
- *Correspondence: Conglin Liu, ; Zhaozhong Zhu,
| | | | - Sejal Saglani
- National Heart and Lung Institute, Imperial College, London, United Kingdom
- Centre for Paediatrics and Child Health, Imperial College, London, United Kingdom
| | - Michael Bowman
- Immunology & Inflammation Research Therapeutic Area, Sanofi US, Cambridge, MA, United States
| | - Lih-Ling Lin
- Immunology & Inflammation Research Therapeutic Area, Sanofi US, Cambridge, MA, United States
| | - Carlos A. Camargo
- Department of Emergency Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Kohei Hasegawa
- Department of Emergency Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Zhaozhong Zhu
- Department of Emergency Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
- *Correspondence: Conglin Liu, ; Zhaozhong Zhu,
| |
Collapse
|
31
|
Wang Y, Cao C, Zhu Y, Fan H, Liu Q, Liu Y, Chen K, Wu Y, Liang S, Li M, Li L, Liu X, Zhang Y, Wu C, Lu G, Wu M. TREM2/β-catenin attenuates NLRP3 inflammasome-mediated macrophage pyroptosis to promote bacterial clearance of pyogenic bacteria. Cell Death Dis 2022; 13:771. [PMID: 36068223 PMCID: PMC9448748 DOI: 10.1038/s41419-022-05193-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 08/07/2022] [Accepted: 08/15/2022] [Indexed: 01/21/2023]
Abstract
Triggering receptors expressed on myeloid cells 2 (TREM2) is considered a protective factor to protect host from bacterial infection, while how it elicits this role is unclear. In the present study, we demonstrate that deficiency of triggering receptors expressed on myeloid cells 2 (TREM2) significantly enhanced macrophage pyroptosis induced by four common pyogenic bacteria including Staphylococcus aureus, Pseudomonas aeruginosa, Streptococcus pneumoniae, and Escherichia coli. TREM2 deficiency also decreased bacterial killing ratio of macrophage, while Caspase-1 or GSDMD inhibition promoted macrophage-mediated clearance to these bacteria. Further study demonstrated that the effect of TREM2 on macrophage pyroptosis and bacterial eradication mainly dependents on the activated status of NLRP3 inflammasome. Moreover, as the key downstream of TREM2, β-catenin phosphorylated at Ser675 by TREM2 signal and accumulated in nucleus and cytoplasm. β-catenin mediated the effect of TREM2 on NLRP3 inflammasome and macrophage pyroptosis by reducing NLRP3 expression, and inhibiting inflammasome complex assembly by interacting with ASC. Collectively, TREM2/β-catenin inhibits NLRP3 inflammasome to regulate macrophage pyroptosis, and enhances macrophage-mediated pyogenic bacterial clearance.
Collapse
Affiliation(s)
- Yi Wang
- grid.411866.c0000 0000 8848 7685Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120 China
| | - Can Cao
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080 China
| | - Yanting Zhu
- grid.411866.c0000 0000 8848 7685Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120 China
| | - Huifeng Fan
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Qiaojuan Liu
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080 China
| | - Yiting Liu
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080 China
| | - Kang Chen
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080 China
| | - Yongjian Wu
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080 China
| | - Siping Liang
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080 China
| | - Meiyu Li
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080 China
| | - Lexi Li
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Xi Liu
- grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080 China
| | - Yuanqing Zhang
- grid.12981.330000 0001 2360 039XSchool of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006 China
| | - Chenglin Wu
- grid.12981.330000 0001 2360 039XOrgan Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Gen Lu
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Minhao Wu
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080 China ,grid.12981.330000 0001 2360 039XGuangdong Engineering & Technology Research Center for Disease-Model Animals, Sun Yat-sen University, Guangzhou, 510006 China
| |
Collapse
|
32
|
Human pluripotent stem cell-derived macrophages host Mycobacterium abscessus infection. Stem Cell Reports 2022; 17:2156-2166. [PMID: 35985333 PMCID: PMC9481898 DOI: 10.1016/j.stemcr.2022.07.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 07/21/2022] [Accepted: 07/21/2022] [Indexed: 11/22/2022] Open
Abstract
Human macrophages are a natural host of many mycobacterium species, including Mycobacterium abscessus (M. abscessus), an emerging pathogen affecting immunocompromised and cystic fibrosis patients with few available treatments. The search for an effective treatment is hindered by the lack of a tractable in vitro intracellular infection model. Here, we established a reliable model for M. abscessus infection using human pluripotent stem cell-derived macrophages (hPSC-macrophages). hPSC differentiation permitted reproducible generation of functional macrophages that were highly susceptible to M. abscessus infection. Electron microscopy demonstrated that M. abscessus was present in the hPSC-macrophage vacuoles. RNA sequencing analysis revealed a time-dependent host cell response, with differing gene and protein expression patterns post-infection. Engineered tdTOMATO-expressing hPSC-macrophages with GFP-expressing mycobacteria enabled rapid image-based high-throughput analysis of intracellular infection and quantitative assessment of antibiotic efficacy. Our study describes the first to our knowledge hPSC-based model for M. abscessus infection, representing a novel and accessible system for studying pathogen-host interaction and drug discovery. A simplified chemically defined and serum-free protocol for the generation of functional macrophages from hPSCs An efficient human model recapitulating intracellular infection of Mycobacterium abscessus in hPSC-macrophages A high-throughput system testing antibiotic sensitivity with fluorescent hPSC-macrophages and M. abscessus
Collapse
|
33
|
Dubytska LP, Koirala R, Sanchez A, Thune R. Edwardsiella ictaluri T3SS Effector EseN Modulates Expression of Host Genes Involved in the Immune Response. Microorganisms 2022; 10:microorganisms10071334. [PMID: 35889053 PMCID: PMC9323599 DOI: 10.3390/microorganisms10071334] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/28/2022] [Accepted: 06/29/2022] [Indexed: 12/10/2022] Open
Abstract
The type III secretion system (T3SS) effector EseN is encoded on the Edwardsiella ictaluri chromosome and is homologous to a family of T3SS effector proteins with phosphothreonine lyase activity. Previously we demonstrated that E. ictaluri invasion activates extracellular signal-regulated kinases 1 and 2 (ERK1/2) early in the infection, which are subsequently inactivated by EseN. Comparative transcriptomic analysis showed a total of 753 significant differentially expressed genes in head-kidney-derived macrophages (HKDM) infected with an EseN mutant (∆EseN) compared to HKDM infected with wild-type (WT) strains. This data strongly indicates classical activation of macrophages (the M1 phenotype) in response to E. ictaluri infection and a significant role for EseN in the manipulation of this process. Our data also indicates that E. ictaluri EseN is involved in the modulation of pathways involved in the immune response to infection and expression of several transcription factors, including NF-κβ (c-rel and relB), creb3L4, socs6 and foxo3a. Regulation of transcription factors leads to regulation of proinflammatory interleukins (IL-8, IL-12a, IL-15, IL-6) and cyclooxygenase-2 (COX-2) expression. Inhibition of COX-2 mRNA by WT E. ictaluri leads to decreased production of prostaglandin E2 (PGE2), which is the product of COX-2 activity. Collectively, our results indicate that E. ictaluri EseN is an important player in the modulation of host immune responses to E.ictaluri infection.
Collapse
Affiliation(s)
- Lidiya P. Dubytska
- Department of Biology and Chemistry, Southern University and A & M College, Baton Rouge, LA 70813, USA; (R.K.); (A.S.)
- Correspondence: ; Tel.: +1-225-771-33743
| | - Ranjan Koirala
- Department of Biology and Chemistry, Southern University and A & M College, Baton Rouge, LA 70813, USA; (R.K.); (A.S.)
| | - Azhia Sanchez
- Department of Biology and Chemistry, Southern University and A & M College, Baton Rouge, LA 70813, USA; (R.K.); (A.S.)
| | - Ronald Thune
- Department of Pathobiological Sciences, Louisiana State University School of Veterinary Medicine, Baton Rouge, LA 70803, USA;
- School of Animal Science, Louisiana State University Agricultural Experiment Station, Baton Rouge, LA 70803, USA
| |
Collapse
|
34
|
Deng Y, Ouyang X, Sun J, Shi X, Li Y, Chan YK, Yang W, Peng S. Rapid sterilisation and diabetic cutaneous regeneration using cascade bio-heterojunctions through glucose oxidase-primed therapy. Bioact Mater 2022; 25:748-765. [PMID: 37056260 PMCID: PMC10087611 DOI: 10.1016/j.bioactmat.2022.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 06/21/2022] [Accepted: 07/02/2022] [Indexed: 11/19/2022] Open
Abstract
The cutaneous wound in diabetic patients frequently encounters intractable pathogenic infections due to the hyperglycemia micromilieu which is conducive to bacterial growth and multiplication. Despite the extensive clinical use of antibiotics to treat bacterial infections, the emergence of drug-resistant and super pathogens as well as the potential side effects of antibiotics have elicited alarming challenges to public health. To address this daunting concern, we devise and develop a photo-activated cascade bio-heterojunctions (C-bio-HJs) for rapid sterilization and diabetic cutaneous regeneration. In the designed C-bio-HJs, photo-generated electron-hole pairs of graphite-phase carbon nitride (g-C3N4) are effectively separated with the marriage of molybdenum disulfide (MoS2), which achieves the augmented photodynamic antibacterial effect. Moreover, glucose oxidase (GOx) tethered on the bio-HJs catalyzes glucose into hydrogen peroxide (H2O2) in diabetic wounds for starvation therapy. Furthermore, Mo4+ enables the catalysis of H2O2 into a highly effective hydroxyl radical (·OH) for chemodynamic-photothermal combined antibacterial therapy. Both in vitro and in vivo results authenticate the cascading antibacterial properties and skin regeneration-promoting effects of the C-bio-HJs, which provide a facile strategy to combat diabetic wound healing through the synergistic GOx-primed dynamic therapies.
Collapse
Affiliation(s)
- Yi Deng
- College of Biomedical Engineering, School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China
| | - Xumei Ouyang
- Zhuhai Institute of Translational Medicine, Zhuhai People's Hospital (Zhuhai Hospital Affiliated with Jinan University), Zhuhai, Guangdong, 519000, China
| | - Jiyu Sun
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Xiuyuan Shi
- Department of Materials, Imperial College London, SW7 2AZ, London, United Kingdom
| | - Yunfei Li
- Department of Biomedical Engineering, The City College of the City University of New York, New York, United States
| | - Yau Kei Chan
- Department of Ophthalmology, The University of Hong Kong, Hong Kong, China
| | - Weizhong Yang
- College of Biomedical Engineering, School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
- Corresponding author.
| | - Shaojun Peng
- Zhuhai Institute of Translational Medicine, Zhuhai People's Hospital (Zhuhai Hospital Affiliated with Jinan University), Zhuhai, Guangdong, 519000, China
- Corresponding author.
| |
Collapse
|
35
|
Fuentes DE, Acuña LG, Calderón IL. Stress response and virulence factors in bacterial pathogens relevant for Chilean aquaculture: current status and outlook of our knowledge. Biol Res 2022; 55:21. [PMID: 35642071 PMCID: PMC9153119 DOI: 10.1186/s40659-022-00391-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 05/17/2022] [Indexed: 11/10/2022] Open
Abstract
The study of the stress responses in bacteria has given us a wealth of information regarding the mechanisms employed by these bacteria in aggressive or even non-optimal living conditions. This information has been applied by several researchers to identify molecular targets related to pathogeny, virulence, and survival, among others, and to design new prophylactic or therapeutic strategies against them. In this study, our knowledge of these mechanisms has been summarized with emphasis on some aquatic pathogenic bacteria of relevance to the health and productive aspects of Chilean salmon farming (Piscirickettsia salmonis, Tenacibaculum spp., Renibacterium salmoninarum, and Yersinia ruckeri). This study will aid further investigations aimed at shedding more light on possible lines of action for these pathogens in the coming years.
Collapse
Affiliation(s)
- Derie E Fuentes
- Aquaculture and Marine Ecosystems, Center For Systems Biotechnology, Fraunhofer Chile Research, Santiago, Chile. .,Environmental Sustainability, Center for Systems Biotechnology (CSB-UNAB), Universidad Andres Bello, Facultad de Ciencias de la Vida, Santiago, Chile.
| | - Lillian G Acuña
- Laboratorio de RNAs Bacterianos, Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile.,Interdisciplinary Center for Aquaculture Research, Universidad Andres Bello, Viña del Mar, Santiago, Chile
| | - Iván L Calderón
- Laboratorio de RNAs Bacterianos, Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
| |
Collapse
|
36
|
Sijmons D, Guy AJ, Walduck AK, Ramsland PA. Helicobacter pylori and the Role of Lipopolysaccharide Variation in Innate Immune Evasion. Front Immunol 2022; 13:868225. [PMID: 35634347 PMCID: PMC9136243 DOI: 10.3389/fimmu.2022.868225] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 04/04/2022] [Indexed: 11/30/2022] Open
Abstract
Helicobacter pylori is an important human pathogen that infects half the human population and can lead to significant clinical outcomes such as acute and chronic gastritis, duodenal ulcer, and gastric adenocarcinoma. To establish infection, H. pylori employs several mechanisms to overcome the innate and adaptive immune systems. H. pylori can modulate interleukin (IL) secretion and innate immune cell function by the action of several virulence factors such as VacA, CagA and the type IV secretion system. Additionally, H. pylori can modulate local dendritic cells (DC) negatively impacting the function of these cells, reducing the secretion of immune signaling molecules, and influencing the differentiation of CD4+ T helper cells causing a bias to Th1 type cells. Furthermore, the lipopolysaccharide (LPS) of H. pylori displays a high degree of phase variation and contains human blood group carbohydrate determinants such as the Lewis system antigens, which are proposed to be involved in molecular mimicry of the host. Lastly, the H. pylori group of outer membrane proteins such as BabA play an important role in attachment and interaction with host Lewis and other carbohydrate antigens. This review examines the various mechanisms that H. pylori utilises to evade the innate immune system as well as discussing how the structure of the H. pylori LPS plays a role in immune evasion.
Collapse
Affiliation(s)
- Daniel Sijmons
- School of Science, RMIT University, Melbourne, VIC, Australia
| | - Andrew J. Guy
- School of Science, RMIT University, Melbourne, VIC, Australia
- ZiP Diagnostics, Collingwood, VIC, Australia
| | - Anna K. Walduck
- School of Science, RMIT University, Melbourne, VIC, Australia
| | - Paul A. Ramsland
- School of Science, RMIT University, Melbourne, VIC, Australia
- Department of Immunology, Monash University, Melbourne, VIC, Australia
- Department of Surgery, Austin Health, University of Melbourne, Heidelberg, VIC, Australia
- *Correspondence: Paul A. Ramsland,
| |
Collapse
|
37
|
Geng B, Li Y, Hu J, Chen Y, Huang J, Shen L, Pan D, Li P. Graphitic-N-doped graphene quantum dots for photothermal eradication of multidrug-resistant bacteria in the second near-infrared window. J Mater Chem B 2022; 10:3357-3365. [PMID: 35380572 DOI: 10.1039/d2tb00192f] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Developing efficient therapeutic strategies for combating bacterial infection remains a challenge owing to the indiscriminate utilization of antibiotics and the prevalence of multidrug-resistant (MDR) bacteria. Herein, highly graphitic-N-doped graphene quantum dots (N-GQDs) with efficient NIR-II photothermal conversion properties were synthesized for the first time for photothermal antibacterial therapy. The obtained N-GQDs exhibited strong NIR absorption ranging from 700 to 1200 nm, achieving high photothermal conversion efficiency of 77.8% and 50.4% at 808 and 1064 nm, respectively. Outstanding antibacterial and antibiofilm activities against MDR bacteria (methicillin-resistant Staphylococcus aureus, MRSA) were achieved by the N-GQDs in the presence of an 808 or 1064 nm laser. In vivo investigations verified that the generation of hyperthermia by N-GQDs plus a NIR-II laser can combat MDR bacterial infections and thus significantly accelerate wound healing. Our work provides a novel carbon-based nanomaterial as a photothermal antibacterial agent for efficiently avoiding bacterial resistance and fighting MDR bacterial infections.
Collapse
Affiliation(s)
- Bijiang Geng
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
| | - Yuan Li
- School of Life Sciences, Shanghai University, Shanghai 200444, China.
| | - Jinyan Hu
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
| | - Yuanyuan Chen
- School of Life Sciences, Shanghai University, Shanghai 200444, China.
| | - Junyi Huang
- School of Life Sciences, Shanghai University, Shanghai 200444, China.
| | - Longxiang Shen
- Department of Orthopedic Surgery, Shanghai Jiao Tong University affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Dengyu Pan
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
| | - Ping Li
- School of Life Sciences, Shanghai University, Shanghai 200444, China.
| |
Collapse
|
38
|
Mishra S, Ghanim M. Interactions of Liberibacter Species with Their Psyllid Vectors: Molecular, Biological and Behavioural Mechanisms. Int J Mol Sci 2022; 23:ijms23074029. [PMID: 35409386 PMCID: PMC8999863 DOI: 10.3390/ijms23074029] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/02/2022] [Accepted: 04/03/2022] [Indexed: 01/27/2023] Open
Abstract
Liberibacter is a group of plant pathogenic bacteria, transmitted by insect vectors, psyllids (Hemiptera: Psylloidea), and has emerged as one of the most devastating pathogens which have penetrated into many parts of the world over the last 20 years. The pathogens are known to cause plant diseases, such as Huanglongbing (citrus greening disease), Zebra chip disease, and carrot yellowing, etc., threatening some very important agricultural sectors, including citrus, potato and others. Candidatus Liberibacter asiaticus (CLas), the causative agent of citrus greening disease, is one of the most important pathogens of this group. This pathogen has infected most of the citrus trees in the US, Brazil and China, causing tremendous decline in citrus productivity, and, consequently, a severely negative impact on economic and personnel associated with citrus and related industries in these countries. Like other members in this group, CLas is transmitted by the Asian citrus psyllid (ACP, Diaphorina citri) in a persistent circulative manner. An additional important member of this group is Ca. L. solanacearum (CLso), which possesses nine haplotypes and infects a variety of crops, depending on the specific haplotype and the insect vector species. Ongoing pathogen control strategies, that are mainly based on use of chemical pesticides, lack the necessary credentials of being technically feasible, and environmentally safe. For this reason, strategies based on interference with Liberibacter vector transmission have been adopted as alternative strategies for the prevention of infection by these pathogens. A significant amount of research has been conducted during the last 10-15 years to understand the aspects of transmission of these bacterial species by their psyllid vectors. These research efforts span biological, ecological, behavioural and molecular aspects of Liberibacter–psyllid interactions, and will be reviewed in this manuscript. These attempts directed towards devising new means of disease control, endeavoured to explore alternative strategies, instead of relying on using chemicals for reducing the vector populations, which is the sole strategy currently employed and which has profound negative effects on human health, beneficial organisms and the environment.
Collapse
|
39
|
Meng Y, Dai W, Lin Z, Zhang W, Dong Y. Expression and functional characterization of peptidoglycan recognition protein-S6 involved in antibacterial responses in the razor clam Sinonovacula constricta. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2022; 129:104331. [PMID: 34883108 DOI: 10.1016/j.dci.2021.104331] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 11/21/2021] [Accepted: 12/04/2021] [Indexed: 06/13/2023]
Abstract
It has been recognized that peptidoglycan recognition proteins (PGRPs), structurally conserved molecules, play crucial roles in the innate immunity of invertebrate. However, few studies have been taken to explore their potential functions. In this study, a novel PGRP from the razor clam Sinonovacula constrict designated as ScPGRP-S6 was identified and characterized. The open reading frame (ORF) of ScPGRP-S6 was 666 bp in length, encoding a protein of 221 amino acid with a signal peptide (1-30) and a typical PGRP domain (39-187). The sequence alignment combined with phylogenetic analysis collectively confirmed that ScPGRP-S6 was a novel member belonging to PGRP-S family. The mRNA transcript of ScPGRP-S6 in the hepatopancreases was significantly up-regulated after peptidoglycan (PGN) stimulation, while it was moderately up-regulated after lipopolysaccharide (LPS) stimulation. The result of immunofluorescence detection demonstrated that the positive signal enhanced obviously after Vibrio parahaemolyticus challenge. Notably, the recombinant protein of ScPGRP-S6 (designed as rScPGRP-S6) exhibited high agglutination activity towards V. parahaemolyticus but weak to Staphylococcus aureus. Furthermore, rScPGRP-S6 showed strong amidase and antibacterial activity in the presence of Zn2+. Collectively, our results manifested that ScPGRP-S6 could act as a scavenger in the innate immune response of S. constricta.
Collapse
Affiliation(s)
- Yiping Meng
- Zhejiang Key Laboratory of Aquatic Germplasm Resource, College of Biological & Environmental Sciences, Zhejiang Wanli University, Ningbo, 315100, PR China; College of Marine Sciences, Ningbo University, Ningbo, 315010, PR China
| | - Wenfang Dai
- Ninghai Institute of Mariculture Breeding and Seed Industry, Zhejiang Wanli University, Ninghai, 315604, PR China
| | - Zhihua Lin
- Zhejiang Key Laboratory of Aquatic Germplasm Resource, College of Biological & Environmental Sciences, Zhejiang Wanli University, Ningbo, 315100, PR China; Ninghai Institute of Mariculture Breeding and Seed Industry, Zhejiang Wanli University, Ninghai, 315604, PR China
| | - Weiwei Zhang
- College of Marine Sciences, Ningbo University, Ningbo, 315010, PR China
| | - Yinghui Dong
- Zhejiang Key Laboratory of Aquatic Germplasm Resource, College of Biological & Environmental Sciences, Zhejiang Wanli University, Ningbo, 315100, PR China; Ninghai Institute of Mariculture Breeding and Seed Industry, Zhejiang Wanli University, Ninghai, 315604, PR China.
| |
Collapse
|
40
|
A Model for Brucellosis Disease Incorporating Age of Infection and Waning Immunity. MATHEMATICS 2022. [DOI: 10.3390/math10040670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
This paper proposes a model for brucellosis transmission. The model takes into account the age of infection and waning immunity, that is, the progressive loss of immunity after recovery. Three routes of transmissions are considered: vertical transmission, and both direct and indirect routes of horizontal transmission. According to the well-posedness results, we provide explicit formulas for the equilibria. Next, we derive the basic reproduction number R0 and prove some stability results depending on the basic reproductive number. Finally, we perform numerical simulations using model parameters estimated from biological data to confirm our theoretical results. The results of these simulations suggest that for certain values of parameters, there will be periodic outbreaks of epidemics, and the disease will not be eradicated from the population. Our results also highlight the fact that the birth rate of cattle significantly influences the dynamics of the disease. The proposed model can be of a good use in studying the effects of vaccination on the cattle population.
Collapse
|
41
|
Xue Y, Che J, Ji X, Li Y, Xie J, Chen X. Recent advances in biomaterial-boosted adoptive cell therapy. Chem Soc Rev 2022; 51:1766-1794. [PMID: 35170589 DOI: 10.1039/d1cs00786f] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Adoptive immunotherapies based on the transfer of functional immune cells hold great promise in treating a wide range of malignant diseases, especially cancers, autoimmune diseases, and infectious diseases. However, manufacturing issues and biological barriers lead to the insufficient population of target-selective effector cells at diseased sites after adoptive transfer, hindering effective clinical translation. The convergence of immunology, cellular biology, and materials science lays a foundation for developing biomaterial-based engineering platforms to overcome these challenges. Biomaterials can be rationally designed to improve ex vivo immune cell expansion, expedite functional engineering, facilitate protective delivery of immune cells in situ, and navigate the infused cells in vivo. Herein, this review presents a comprehensive summary of the latest progress in biomaterial-based strategies to enhance the efficacy of adoptive cell therapy, focusing on function-specific biomaterial design, and also discusses the challenges and prospects of this field.
Collapse
Affiliation(s)
- Yonger Xue
- Jiangsu Key Laboratory of Molecular Imaging and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School, Southeast University, 87 Dingjiaqiao Road, Nanjing, Jiangsu 210009, China. .,Center for BioDelivery Sciences, School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, P. R. China.,Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, Kawasaki 210-0821, Japan
| | - Junyi Che
- Department of Rheumatology and Immunology, Institute of Translational Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Xuemei Ji
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, China
| | - Yunuo Li
- Jiangsu Key Laboratory of Molecular Imaging and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School, Southeast University, 87 Dingjiaqiao Road, Nanjing, Jiangsu 210009, China.
| | - Jinbing Xie
- Jiangsu Key Laboratory of Molecular Imaging and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School, Southeast University, 87 Dingjiaqiao Road, Nanjing, Jiangsu 210009, China. .,Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, Kawasaki 210-0821, Japan.,State Key Laboratory of Bioelectronics, Southeast University, 87 Dingjiaqiao Road, Nanjing, Jiangsu 210009, China
| | - Xiaoyuan Chen
- Departments of Diagnostic Radiology, Surgery, Chemical and Biomolecular Engineering, and Biomedical Engineering, Yong Loo Lin School of Medicine and Faculty of Engineering, National University of Singapore, Singapore, 119074, Singapore. .,Clinical Imaging Research Centre, Centre for Translational Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore.,Nanomedicine Translational Research Program, NUS Center for Nanomedicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
| |
Collapse
|
42
|
Gao T, Lin J, Wei H, Bao B, Zhu H, Zheng X. Platelets mediate trained immunity against bone and joint infections in a mouse model. Bone Joint Res 2022; 11:73-81. [PMID: 35118873 PMCID: PMC8882326 DOI: 10.1302/2046-3758.112.bjr-2021-0279.r1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
AIMS Trained immunity confers non-specific protection against various types of infectious diseases, including bone and joint infection. Platelets are active participants in the immune response to pathogens and foreign substances, but their role in trained immunity remains elusive. METHODS We first trained the innate immune system of C57BL/6 mice via intravenous injection of two toll-like receptor agonists (zymosan and lipopolysaccharide). Two, four, and eight weeks later, we isolated platelets from immunity-trained and control mice, and then assessed whether immunity training altered platelet releasate. To better understand the role of immunity-trained platelets in bone and joint infection development, we transfused platelets from immunity-trained mice into naïve mice, and then challenged the recipient mice with Staphylococcus aureus or Escherichia coli. RESULTS After immunity training, the levels of pro-inflammatory cytokines (tumour necrosis factor alpha (TNF-α), interleukin (IL)-17A) and chemokines (CCL5, CXCL4, CXCL5, CXCL7, CXCL12) increased significantly in platelet releasate, while the levels of anti-inflammatory cytokines (IL-4, IL-13) decreased. Other platelet-secreted factors (e.g. platelet-derived growth factor (PDGF)-AA, PDGF-AB, PDGF-BB, cathepsin D, serotonin, and histamine) were statistically indistinguishable between the two groups. Transfusion of platelets from trained mice into naïve mice reduced infection risk and bacterial burden after local or systemic challenge with either S. aureus or E. coli. CONCLUSION Immunity training altered platelet releasate by increasing the levels of inflammatory cytokines/chemokines and decreasing the levels of anti-inflammatory cytokines. Transfusion of platelets from immunity-trained mice conferred protection against bone and joint infection, suggesting that alteration of platelet releasate might be an important mechanism underlying trained immunity and may have clinical implications. Cite this article: Bone Joint Res 2022;11(2):73-81.
Collapse
Affiliation(s)
- Tao Gao
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Junqing Lin
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Haifeng Wei
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Bingbo Bao
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Hongyi Zhu
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Xianyou Zheng
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| |
Collapse
|
43
|
Meek S, Watson T, Eory L, McFarlane G, Wynne FJ, McCleary S, Dunn LEM, Charlton EM, Craig C, Shih B, Regan T, Taylor R, Sutherland L, Gossner A, Chintoan-Uta C, Fletcher S, Beard PM, Hassan MA, Grey F, Hope JC, Stevens MP, Nowak-Imialek M, Niemann H, Ross PJ, Tait-Burkard C, Brown SM, Lefevre L, Thomson G, McColl BW, Lawrence AB, Archibald AL, Steinbach F, Crooke HR, Gao X, Liu P, Burdon T. Stem cell-derived porcine macrophages as a new platform for studying host-pathogen interactions. BMC Biol 2022; 20:14. [PMID: 35027054 PMCID: PMC8759257 DOI: 10.1186/s12915-021-01217-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 12/16/2021] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Infectious diseases of farmed and wild animals pose a recurrent threat to food security and human health. The macrophage, a key component of the innate immune system, is the first line of defence against many infectious agents and plays a major role in shaping the adaptive immune response. However, this phagocyte is a target and host for many pathogens. Understanding the molecular basis of interactions between macrophages and pathogens is therefore crucial for the development of effective strategies to combat important infectious diseases. RESULTS We explored how porcine pluripotent stem cells (PSCs) can provide a limitless in vitro supply of genetically and experimentally tractable macrophages. Porcine PSC-derived macrophages (PSCdMs) exhibited molecular and functional characteristics of ex vivo primary macrophages and were productively infected by pig pathogens, including porcine reproductive and respiratory syndrome virus (PRRSV) and African swine fever virus (ASFV), two of the most economically important and devastating viruses in pig farming. Moreover, porcine PSCdMs were readily amenable to genetic modification by CRISPR/Cas9 gene editing applied either in parental stem cells or directly in the macrophages by lentiviral vector transduction. CONCLUSIONS We show that porcine PSCdMs exhibit key macrophage characteristics, including infection by a range of commercially relevant pig pathogens. In addition, genetic engineering of PSCs and PSCdMs affords new opportunities for functional analysis of macrophage biology in an important livestock species. PSCs and differentiated derivatives should therefore represent a useful and ethical experimental platform to investigate the genetic and molecular basis of host-pathogen interactions in pigs, and also have wider applications in livestock.
Collapse
Affiliation(s)
- Stephen Meek
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK.
| | - Tom Watson
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - Lel Eory
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - Gus McFarlane
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - Felicity J Wynne
- Virology Department, Animal and Plant Health Agency, Addlestone, KT15 3NB, UK
| | - Stephen McCleary
- Virology Department, Animal and Plant Health Agency, Addlestone, KT15 3NB, UK
| | | | - Emily M Charlton
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - Chloe Craig
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - Barbara Shih
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - Tim Regan
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - Ryan Taylor
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - Linda Sutherland
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - Anton Gossner
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - Cosmin Chintoan-Uta
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - Sarah Fletcher
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - Philippa M Beard
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
- The Pirbright Institute, Pirbright, Surrey, UK
| | - Musa A Hassan
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - Finn Grey
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - Jayne C Hope
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - Mark P Stevens
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - Monika Nowak-Imialek
- First Department of Medicine, Cardiology, Klinikum rechts der Isar - Technical University of Munich, Ismaninger Straße 22, 81675, Munich, Germany
| | - Heiner Niemann
- Gastroenterology, Hepatology and Endocrinology Department, Hannover Medical School, Carl Neuberg Str 1, 30625, Hannover, Germany
| | - Pablo J Ross
- Department of Animal Science, University of California, 450 Bioletti Way, Davis, CA, 95616, USA
| | - Christine Tait-Burkard
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - Sarah M Brown
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - Lucas Lefevre
- UK Dementia Research Institute, The University of Edinburgh, Edinburgh Medical School, The Chancellor's Building, 49 Little France Crescent, Edinburgh, EH16 4SB, UK
| | - Gerard Thomson
- Centre for Clinical Brain Sciences, University of Edinburgh, Department of Clinical Neurosciences, NHS Lothian, Edinburgh, UK
| | - Barry W McColl
- UK Dementia Research Institute, The University of Edinburgh, Edinburgh Medical School, The Chancellor's Building, 49 Little France Crescent, Edinburgh, EH16 4SB, UK
- Centre for Discovery Brain Sciences, Chancellor's Building, 49 Little France Crescent, Edinburgh, EH16 4SB, UK
| | - Alistair B Lawrence
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
- Scotland's Rural College (SRUC), West Mains Road, Edinburgh, EH9 3RG, UK
| | - Alan L Archibald
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - Falko Steinbach
- Virology Department, Animal and Plant Health Agency, Addlestone, KT15 3NB, UK
| | - Helen R Crooke
- Virology Department, Animal and Plant Health Agency, Addlestone, KT15 3NB, UK
| | - Xuefei Gao
- Department of Physiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Pentao Liu
- The Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, Stem Cell and Regenerative Medicine, The University of Hong Kong, Hong Kong, China
- Centre for Translational Stem Cell Biology, Science Park, Hong Kong, China
| | - Tom Burdon
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK.
| |
Collapse
|
44
|
A Novel Dibenzoxazepine Attenuates Intracellular Salmonella Typhimurium Oxidative Stress Resistance. Microbiol Spectr 2021; 9:e0151921. [PMID: 34851152 PMCID: PMC8635125 DOI: 10.1128/spectrum.01519-21] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Salmonella enterica serovar Typhimurium is the leading cause of invasive nontyphoidal salmonellosis. Additionally, the emergence of multidrug-resistant S. Typhimurium has further increased the difficulty of controlling its infection. Previously, we showed that an antipsychotic drug, loxapine, suppressed intracellular Salmonella in macrophages. To exploit loxapine's antibacterial activity, we simultaneously evaluated the anti-intracellular Salmonella activity and cytotoxicity of newly synthesized loxapine derivatives using an image-based high-content assay. We identified that SW14 exhibits potent suppressive effects on intramacrophagic S. Typhimurium with an 50% effective concentration (EC50) of 0.5 μM. SW14 also sensitized intracellular Salmonella to ciprofloxacin and cefixime and effectively controlled intracellular multidrug- and fluoroquinolone-resistant S. Typhimurium strains. However, SW14 did not affect bacterial growth in standard microbiological broth or minimal medium that mimics the phagosomal environment. Cellular autophagy blockade by 3-methyladenine (3-MA) or shATG7 elevated the susceptibility of intracellular Salmonella to SW14. Finally, reactive oxygen species (ROS) scavengers reduced the antibacterial efficacy of SW14, but the ROS levels in SW14-treated macrophages were not elevated. SW14 decreased the resistance of outer membrane-compromised S. Typhimurium to H2O2. Collectively, our data indicated that the structure of loxapine can be further optimized to develop new antibacterial agents by targeting bacterial resistance to host oxidative-stress defense. IMPORTANCE The incidence of diseases caused by pathogenic bacteria with resistance to common antibiotics is consistently increasing. In addition, Gram-negative bacteria are particularly difficult to treat with antibiotics, especially those that can invade and proliferate intracellularly. In order to find a new antibacterial compound against intracellular Salmonella, we established a cell-based high-content assay and identified SW14 from the derivatives of the antipsychotic drug loxapine. Our data indicate that SW14 has no effect on free bacteria in the medium but can suppress the intracellular proliferation of multidrug-resistant (MDR) S. Typhimurium in macrophages. We also found that SW14 can suppress the resistance of outer membrane compromised Salmonella to H2O2, and its anti-intracellular Salmonella activity can be reversed by reactive oxygen species (ROS) scavengers. Together, the findings suggest that SW14 might act via a virulence-targeted mechanism and that its structure has the potential to be further developed as a new therapeutic against MDR Salmonella.
Collapse
|
45
|
Regulation of TLR4 signaling through the TRAF6/sNASP axis by reversible phosphorylation mediated by CK2 and PP4. Proc Natl Acad Sci U S A 2021; 118:2107044118. [PMID: 34789577 DOI: 10.1073/pnas.2107044118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/06/2021] [Indexed: 02/06/2023] Open
Abstract
Recognition of invading pathogens by Toll-like receptors (TLRs) activates innate immunity through signaling pathways that involved multiple protein kinases and phosphatases. We previously demonstrated that somatic nuclear autoantigenic sperm protein (sNASP) binds to TNF receptor-associated factor 6 (TRAF6) in the resting state. Upon TLR4 activation, a signaling complex consisting of TRAF6, sNASP, interleukin (IL)-1 receptor-associated kinase 4, and casein kinase 2 (CK2) is formed. CK2 then phosphorylates sNASP to release phospho-sNASP (p-sNASP) from TRAF6, initiating downstream signaling pathways. Here, we showed that protein phosphatase 4 (PP4) is the specific sNASP phosphatase that negatively regulates TLR4-induced TRAF6 activation and its downstream signaling pathway. Mechanistically, PP4 is directly recruited by phosphorylated sNASP to dephosphorylate p-sNASP to terminate TRAF6 activation. Ectopic expression of PP4 specifically inhibited sNASP-dependent proinflammatory cytokine production and downstream signaling following bacterial lipopolysaccharide (LPS) treatment, whereas silencing PP4 had the opposite effect. Primary macrophages and mice infected with recombinant adenovirus carrying a gene encoding PP4 (Ad-PP4) showed significant reduction in IL-6 and TNF-α production. Survival of Ad-PP4-infected mice was markedly increased due to a better ability to clear bacteria in a sepsis model. These results indicate that the serine/threonine phosphatase PP4 functions as a negative regulator of innate immunity by regulating the binding of sNASP to TRAF6.
Collapse
|
46
|
Bekere I, Huang J, Schnapp M, Rudolph M, Berneking L, Ruckdeschel K, Grundhoff A, Günther T, Fischer N, Aepfelbacher M. Yersinia remodels epigenetic histone modifications in human macrophages. PLoS Pathog 2021; 17:e1010074. [PMID: 34793580 PMCID: PMC8639070 DOI: 10.1371/journal.ppat.1010074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 12/02/2021] [Accepted: 10/28/2021] [Indexed: 01/10/2023] Open
Abstract
Various pathogens systematically reprogram gene expression in macrophages, but the underlying mechanisms are largely unknown. We investigated whether the enteropathogen Yersinia enterocolitica alters chromatin states to reprogram gene expression in primary human macrophages. Genome-wide chromatin immunoprecipitation (ChIP) seq analyses showed that pathogen-associated molecular patterns (PAMPs) induced up- or down-regulation of histone modifications (HMod) at approximately 14500 loci in promoters and enhancers. Effectors of Y. enterocolitica reorganized about half of these dynamic HMod, with the effector YopP being responsible for about half of these modulatory activities. The reorganized HMod were associated with genes involved in immune response and metabolism. Remarkably, the altered HMod also associated with 61% of all 534 known Rho GTPase pathway genes, revealing a new level in Rho GTPase regulation and a new aspect of bacterial pathogenicity. Changes in HMod were associated to varying degrees with corresponding gene expression, e. g. depending on chromatin localization and cooperation of the HMod. In summary, infection with Y. enterocolitica remodels HMod in human macrophages to modulate key gene expression programs of the innate immune response. Human pathogenic bacteria can affect epigenetic histone modifications to modulate gene expression in host cells. However, a systems biology analysis of this bacterial virulence mechanism in immune cells has not been performed. Here we analyzed genome-wide epigenetic histone modifications and associated gene expression changes in primary human macrophages infected with enteropathogenic Yersinia enterocolitica. We demonstrate that Yersinia virulence factors extensively modulate histone modifications and associated gene expression triggered by the pathogen-associated molecular patterns (PAMPs) of the bacteria. The epigenetically modulated genes are involved in several key pathways of the macrophage immune response, including the Rho GTPase pathway, revealing a novel level of Rho GTPase regulation by a bacterial pathogen. Overall, our findings provide an in-depth view of epigenetic and gene expression changes during host-pathogen interaction and might have further implications for understanding of the innate immune memory in macrophages.
Collapse
Affiliation(s)
- Indra Bekere
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
- * E-mail: (IB); (MA)
| | - Jiabin Huang
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Marie Schnapp
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Maren Rudolph
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Laura Berneking
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Klaus Ruckdeschel
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Adam Grundhoff
- Heinrich-Pette-Institute (HPI), Leibniz Institute for Experimental Virology, Research Group Virus Genomics, Hamburg, Germany
| | - Thomas Günther
- Heinrich-Pette-Institute (HPI), Leibniz Institute for Experimental Virology, Research Group Virus Genomics, Hamburg, Germany
| | - Nicole Fischer
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Martin Aepfelbacher
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
- * E-mail: (IB); (MA)
| |
Collapse
|
47
|
Wang C, Li Q, Tang C, Zhao X, He Q, Tang X, Ren J. Characterization of the blood and neutrophil-specific microbiomes and exploration of potential bacterial biomarkers for sepsis in surgical patients. IMMUNITY INFLAMMATION AND DISEASE 2021; 9:1343-1357. [PMID: 34288545 PMCID: PMC8589375 DOI: 10.1002/iid3.483] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 06/12/2021] [Accepted: 06/21/2021] [Indexed: 12/29/2022]
Abstract
Introduction Recent studies have demonstrated the presence of a circulating microbiome in the blood of healthy subjects and chronic inflammatory patients. However, our knowledge regarding the blood microbiome and its potential roles in surgical patients remains very limited. The objective of this study was to determine the blood microbial landscape in surgical patients and to explore its potential associations with postoperative sepsis. Materials and Methods 2825 patients who underwent surgical treatments were screened for enrollment and 204 cases were recruited in this study. The patients were sub‐grouped into noninfected, infected, sepsis, and septic shock according to postoperative clinical manifestations. A total of 222 blood samples were obtained for neutrophil isolation, DNA extraction and high‐throughput sequencing, quantitative proteomics analysis, and flow cytometric analyses. Results Blood and neutrophils in surgical patients and healthy controls contained highly diverse microbiomes, mainly comprising Proteobacteria, Actinobacteria, Firmicutes and Bacteroidetes. The majority (80.7%–91.5%) of the microbiomes were composed of gut‐associated bacteria. The microbiomes in septic patients were significantly distinct from those of healthy controls, and marked differences in microbiome composition were observed between sepsis and septic shock groups. Several specific bacterial genera, including Flavobacterium, Agrococcus, Polynucleobacter, and Acidovorax, could distinguish patients with septic shock from those with sepsis, with higher area under curve values. Moreover, Agrococcus, Polynucleobacter, and Acidovorax were positively associated with the sequential (sepsis‐related) organ failure assessment scores and/or acute physiology and chronic health examination scores in septic shock patients. The proteins involved in bactericidal activities of neutrophils were downregulated in septic patients. Conclusions We present evidence identifying significant changes of blood and neutrophil‐specific microbiomes across various stages of sepsis, which might be associated with the progression of sepsis after surgical treatments. Several certain bacterial genera in blood microbiome could have potential as microbial markers for early detection of sepsis.
Collapse
Affiliation(s)
- Chenyang Wang
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Qiurong Li
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Chun Tang
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Xiaofan Zhao
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Qin He
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Xingming Tang
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Jianan Ren
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| |
Collapse
|
48
|
Jafari P, Luscher A, Siriwardena T, Michetti M, Que YA, Rahme LG, Reymond JL, Raffoul W, Van Delden C, Applegate LA, Köhler T. Antimicrobial Peptide Dendrimers and Quorum-Sensing Inhibitors in Formulating Next-Generation Anti-Infection Cell Therapy Dressings for Burns. Molecules 2021; 26:molecules26133839. [PMID: 34202446 PMCID: PMC8270311 DOI: 10.3390/molecules26133839] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 06/02/2021] [Accepted: 06/12/2021] [Indexed: 12/21/2022] Open
Abstract
Multidrug resistance infections are the main cause of failure in the pro-regenerative cell-mediated therapy of burn wounds. The collagen-based matrices for delivery of cells could be potential substrates to support bacterial growth and subsequent lysis of the collagen leading to a cell therapy loss. In this article, we report the development of a new generation of cell therapy formulations with the capacity to resist infections through the bactericidal effect of antimicrobial peptide dendrimers and the anti-virulence effect of anti-quorum sensing MvfR (PqsR) system compounds, which are incorporated into their formulation. Anti-quorum sensing compounds limit the pathogenicity and antibiotic tolerance of pathogenic bacteria involved in the burn wound infections, by inhibiting their virulence pathways. For the first time, we report a biological cell therapy dressing incorporating live progenitor cells, antimicrobial peptide dendrimers, and anti-MvfR compounds, which exhibit bactericidal and anti-virulence properties without compromising the viability of the progenitor cells.
Collapse
Affiliation(s)
- Paris Jafari
- Regenerative Therapy Unit (UTR), Department of Musculoskeletal Medicine DAL, Lausanne University Hospital, 1011 Lausanne, Switzerland; (P.J.); (M.M.)
- Service of Plastic, Reconstructive & Hand Surgery, Lausanne University Hospital, 1011 Lausanne, Switzerland;
- Department of Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy, University of Utah, Salt Lake City, UT 84112, USA
| | - Alexandre Luscher
- Department of Microbiology and Molecular Medicine, University of Geneva, 1211 Geneva, Switzerland; (A.L.); (C.V.D.)
| | - Thissa Siriwardena
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, 3012 Bern, Switzerland; (T.S.); (J.-L.R.)
| | - Murielle Michetti
- Regenerative Therapy Unit (UTR), Department of Musculoskeletal Medicine DAL, Lausanne University Hospital, 1011 Lausanne, Switzerland; (P.J.); (M.M.)
- Service of Plastic, Reconstructive & Hand Surgery, Lausanne University Hospital, 1011 Lausanne, Switzerland;
| | - Yok-Ai Que
- Department of Intensive Care Medicine, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland;
| | - Laurence G. Rahme
- Department of Surgery, Harvard Medical School and Massachusetts General Hospital, Boston, MA 02114, USA;
- Shriners Hospitals for Children Boston, Boston, MA 02114, USA
- Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Jean-Louis Reymond
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, 3012 Bern, Switzerland; (T.S.); (J.-L.R.)
| | - Wassim Raffoul
- Service of Plastic, Reconstructive & Hand Surgery, Lausanne University Hospital, 1011 Lausanne, Switzerland;
| | - Christian Van Delden
- Department of Microbiology and Molecular Medicine, University of Geneva, 1211 Geneva, Switzerland; (A.L.); (C.V.D.)
- Division on Infectious Disease and Transplantation, University Hospital of Geneva, 1205 Geneva, Switzerland
| | - Lee Ann Applegate
- Regenerative Therapy Unit (UTR), Department of Musculoskeletal Medicine DAL, Lausanne University Hospital, 1011 Lausanne, Switzerland; (P.J.); (M.M.)
- Service of Plastic, Reconstructive & Hand Surgery, Lausanne University Hospital, 1011 Lausanne, Switzerland;
- Center for Applied Biotechnology and Molecular Medicine, University of Zurich, Winterthurerstrasse 260, 8057 Zurich, Switzerland
- Oxford OSCAR Suzhou Center, Oxford University, Suzhou 215028, China
- Correspondence: (L.A.A.); (T.K.); Tel.: +41-21-314-3510 (L.A.A.); +41-22-379-5571 (T.K.)
| | - Thilo Köhler
- Department of Microbiology and Molecular Medicine, University of Geneva, 1211 Geneva, Switzerland; (A.L.); (C.V.D.)
- Division on Infectious Disease and Transplantation, University Hospital of Geneva, 1205 Geneva, Switzerland
- Correspondence: (L.A.A.); (T.K.); Tel.: +41-21-314-3510 (L.A.A.); +41-22-379-5571 (T.K.)
| |
Collapse
|
49
|
Potential factors involved in the early pathogenesis of Streptococcus uberis mastitis: a review. Folia Microbiol (Praha) 2021; 66:509-523. [PMID: 34085166 DOI: 10.1007/s12223-021-00879-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 05/24/2021] [Indexed: 10/21/2022]
Abstract
Bovine mastitis is an inflammation of the mammary gland, which could be the result of allergy, physical trauma, or invasion by pathogens as Streptococcus uberis. This pathogen is an environmental pathogen associated with subclinical and clinical intramammary infection (IMI) in both lactating and non-lactating cows, which can persist in the udder and cause a chronic infection in the mammary gland. In spite of the important economic losses and increased prevalence caused by S. uberis mastitis, virulence factors involved in bacterial colonization of mammary glands and the pathogenic mechanisms are not yet clear. In the last 30 years, several studies have defined adherence and internalization of S. uberis as the early stages in IMI. S. uberis adheres to and invades into mammary gland cells, and this ability has been observed in in vitro assays. Until now, these abilities have not been determined in vivo challenges since they have been difficult to study. Bacterial surface proteins are able to bind to extracellular matrix protein components such as fibronectin, collagen and laminin, as well as proteins in milk. These proteins play a role in adhesion to host cells and have been denominated microbial surface components recognizing adhesive matrix molecules (MSCRAMMs). This article aims to summarize our current knowledge on the most relevant properties of the potential factors involved in the early pathogenesis of S. uberis mastitis.
Collapse
|
50
|
Dalesandro BE, Pires MM. Induction of Endogenous Antibody Recruitment to the Surface of the Pathogen Enterococcus faecium. ACS Infect Dis 2021; 7:1116-1125. [PMID: 33179504 DOI: 10.1021/acsinfecdis.0c00547] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
For the foreseeable future, conventional small molecule antibiotics will continue to be the predominant treatment option due to wide patient coverage and low costs. Today, however, there is already a significant portion of patients that fail to respond to small molecule antibiotics and, according to the Centers for Disease Control and Prevention, this number is poised to increase in the coming years. Therefore, this rise in drug resistant bacteria must be countered with the development of nontraditional therapies. We propose a measure based on the re-engagement of the immune system toward pathogenic bacteria by grafting bacterial cell surfaces with immunogenic agents. Herein, we describe a class of cell wall analogues that selectively graft bacterial cell surfaces with epitopes that promote their opsonization. More specifically, synthetic analogues of peptidoglycan conjugated to haptens were designed to be incorporated by the cell wall biosynthetic machinery into live Enterococcus faecium. E. faecium is a formidable human pathogen that poses a considerable burden to healthcare and often results in fatalities. We showed that treatment of E. faecium and vancomycin-resistant strains with the cell wall analogues led to the display of haptens on the cell surface, which induced the recruitment of antibodies existing in the serum of humans. These results demonstrate the feasibility in using cell wall analogues as the basis of a class of bacterial immunotherapies against dangerous pathogens.
Collapse
Affiliation(s)
- Brianna E. Dalesandro
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Marcos M. Pires
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| |
Collapse
|