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Lu M. Is aromatic plants environmental health engineering (APEHE) a leverage point of the earth system? Heliyon 2024; 10:e30322. [PMID: 38756557 PMCID: PMC11096952 DOI: 10.1016/j.heliyon.2024.e30322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 03/30/2024] [Accepted: 04/23/2024] [Indexed: 05/18/2024] Open
Abstract
It is important to note that every ecological niche in an ecosystem is significant. This study aims to assess the importance of medicinal and aromatic plants (MAPs) in the ecosystem from multiple perspectives. A primary model of Aromatic Plants Environmental Health Engineering (APEHE) has been designed and constructed. The APEHE system was used to collect aerosol compounds, and it was experimentally verified that these compounds have the potential to impact human health by binding to AKT1 as the primary target, and MMP9 and TLR4 as secondary targets. These compounds may indirectly affect human immunity by reversing drug resistance in drug-resistant bacteria in the nasal cavity. This is mainly achieved through combined mutations in sdhA, scrA, and PEP. Our findings are based on Network pharmacology and molecular binding, drug-resistance rescue experiments, as well as combined transcriptomics and metabolomics experiments. It is suggested that APEHE may have direct or indirect effects on human health. We demonstrate APEHE's numerous potential benefits, such as attenuation and elimination of airborne microorganisms in the environment, enhancing carbon and nitrogen storage in terrestrial ecosystems, promoting the formation of low-level clouds and strengthening the virtuous cycle of Earth's ecosystems. APEHE also supports the development of transdisciplinary technologies, including terpene energy production. It facilitates the creation of a sustainable circular economy and provides additional economic advantages through urban optimisation, as well as fresh insights into areas such as the habitability of other planets. APEHE has the potential to serve as a leverage point for the Earth system. We have created a new research direction.
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Affiliation(s)
- MengYu Lu
- HEFEI XIAODOUKOU HEALTH TECH CO LTD, China
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2
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Lee J, Huh J, Lee Y, Jin Y, Bai F, Ha UH. DnaJ-induced miRNA-146a negatively regulates the expression of IL-8 in macrophages. Microb Pathog 2023; 184:106357. [PMID: 37716625 DOI: 10.1016/j.micpath.2023.106357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 09/11/2023] [Accepted: 09/13/2023] [Indexed: 09/18/2023]
Abstract
As a member of the damage-associated molecular patterns, heat shock proteins (HSPs) are widely recognized for their role in initiating innate immune responses. These highly conserved proteins are expressed ubiquitously in both prokaryotes and eukaryotes. In this study, our aim was to investigate how DnaJ, a HSP40 homolog derived from Pseudomonas aeruginosa (P. aeruginosa), influences the regulation of IL-8 expression in macrophages. Treatment with DnaJ served as a stimulus, inducing a more robust expression of IL-8 compared to other HSP homologs, including DnaK, GroEL, and HtpG. This effect was achieved through the activation of the NF-κB signaling pathway. Interestingly, DnaJ treatment also significantly increased the expression of microRNA-146a (miR-146a), which appears to play a role in modulating the expression of innate defense genes. As a consequence, pre-treatment with DnaJ led to a reduction in the extent of IL-8 induction in response to P. aeruginosa treatment. Notably, this reduction was counteracted by transfection of a miR-146a inhibitor, highlighting the involvement of miR-146a in P. aeruginosa-mediated induction of IL-8 expression. Therefore, this study uncovers the role of DnaJ in triggering the expression of miR-146a, which, in turn, modulates the excessive expression of IL-8 induced by P. aeruginosa infection.
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Affiliation(s)
- Jaehoo Lee
- Department of Biotechnology and Bioinformatics, Korea University, Sejong, 30019, Republic of Korea; Interdisciplinary Graduate Program for Artificial Intelligence Smart Convergence Technology, Korea University, Sejong, 30019, Republic of Korea
| | - Jinwon Huh
- Department of Biotechnology and Bioinformatics, Korea University, Sejong, 30019, Republic of Korea
| | - Yeji Lee
- Department of Biotechnology and Bioinformatics, Korea University, Sejong, 30019, Republic of Korea
| | - Yongxin Jin
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Molecular Microbiology and Technology of the Ministry of Education, Department of Microbiology, Nankai University, Tianjin, 300071, China
| | - Fang Bai
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Molecular Microbiology and Technology of the Ministry of Education, Department of Microbiology, Nankai University, Tianjin, 300071, China
| | - Un-Hwan Ha
- Department of Biotechnology and Bioinformatics, Korea University, Sejong, 30019, Republic of Korea; Interdisciplinary Graduate Program for Artificial Intelligence Smart Convergence Technology, Korea University, Sejong, 30019, Republic of Korea.
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3
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Molecular insight into pentraxin-3: update advances in innate immunity, inflammation, tissue remodeling, diseases, and drug role. Biomed Pharmacother 2022; 156:113783. [DOI: 10.1016/j.biopha.2022.113783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/28/2022] [Accepted: 09/28/2022] [Indexed: 11/20/2022] Open
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DnaJ-induced TLR7 mediates an increase in interferons through the TLR4-engaged AKT/NF-κB and JNK signaling pathways in macrophages. Microb Pathog 2022; 165:105465. [PMID: 35247500 DOI: 10.1016/j.micpath.2022.105465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 02/27/2022] [Accepted: 02/28/2022] [Indexed: 11/24/2022]
Abstract
Toll-like receptor 7 (TLR7) signaling plays pivotal roles in innate immunity by sensing viral single-stranded RNA thereby triggering inflammatory signaling cascades and eliciting protective antiviral responses. In this study, we found that TLR7 expression is highly induced in response to Pseudomonas aeruginosa (P. aeruginosa) infection in a dose- and time-dependent manner. P. aeruginosa-derived DnaJ, a homolog of HSP40, was identified as a related inducing agent for TLR7 expression, and expression of DnaJ was stimulated when host cells were infected with P. aeruginosa. Interestingly, DnaJ was not involved in mediating an increase in the expression levels of TLR3 and TLR8, other well-known antiviral receptors. The induction of TLR7 in response to DnaJ was mediated by the activation of the AKT (Thr308 and Ser473)/NF-κB and p38/JNK MAPKs signaling pathways, consequently transmitting related signals for the expression of interferons (IFNs). Of note, these antiviral responses were regulated, at least in part, by TLR4, which senses the presence of DnaJ and then promotes downstream activation of the AKT (Ser473)/NF-κB and JNK signaling cascades. Taken together, these results suggest that P. aeruginosa-derived DnaJ is sufficient to promote an increase in TLR7 expression in the TLR4-engaged AKT/NF-κB and JNK signaling pathways, thereby promoting an increased antiviral response through the elevated expression of IFNs.
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Liao J, Ren J, Wei H, Lam RHW, Chua SL, Khoo BL. Label-free biosensor of phagocytosis for diagnosing bacterial infections. Biosens Bioelectron 2021; 191:113412. [PMID: 34153636 DOI: 10.1016/j.bios.2021.113412] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 06/02/2021] [Indexed: 01/02/2023]
Abstract
Phagocytic cells recognize and phagocytose invading microbes for destruction. However, bacterial pathogens can remain hidden at low levels from conventional detection or replicate intracellularly after being phagocytosed by immune cells. Current phagocytosis-detection approaches involve flow cytometry or microscopic search for rare bacteria-internalized phagocytes among large populations of uninfected cells, which poses significant challenges in research and clinical settings. Hence it is imperative to develop a rapid, non-disruptive, and label-free phagocytosis detection approach. Using deformability assays and microscopic imaging, we have demonstrated for the first time that the presence of intracellular bacteria in phagocytic blood cells led to aberrant physical properties. Specifically, human monocytes with internalized bacteria of various species were stiffer and larger compared with uninfected monocytes. Taking advantage of these physical differences, a novel microfluidics-based biosensor platform was developed to passively sort, concentrate and quantify rare monocytes with internalized pathogens (MIP) from uninfected monocyte populations for phagocytosis detection. The clinical utility of the MIP platform was demonstrated by enriching and detecting bacteria-internalized monocytes from spiked human blood samples within 1.5 h. Patient-derived clinical isolates were used to validate the utility of the MIP platform further. This proof-of-concept presents a phagocytosis detection platform that could be used to rapidly diagnose microbial infections, especially in bloodstream infections (BSIs), thereby improving the clinical outcomes for point-of-care management.
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Affiliation(s)
- Junchen Liao
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, China
| | - Jifeng Ren
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, China; School of Biomedical Engineering, Capital Medical University, Beijing, 100069, China
| | - Huang Wei
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, China
| | - Raymond H W Lam
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, China; City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, China; Centre for Robotics and Automation, City University of Hong Kong, Hong Kong SAR, China
| | - Song Lin Chua
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong SAR, 999077, China; State Key Laboratory of Chemical Biology and Drug Discovery, The Hong Kong Polytechnic University, Hong Kong SAR, 999077, China; Shenzhen Key Laboratory of Food Biological Safety Control, China.
| | - Bee Luan Khoo
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, China.
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6
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Dias AMM, Douhard R, Hermetet F, Regimbeau M, Lopez TE, Gonzalez D, Masson S, Marcion G, Chaumonnot K, Uyanik B, Causse SZ, Rieu A, Hadi T, Basset C, Chluba J, Grober J, Guzzo J, Neiers F, Ortega-Deballon P, Demidov ON, Lirussi F, Garrido C. Lactobacillus stress protein GroEL prevents colonic inflammation. J Gastroenterol 2021; 56:442-455. [PMID: 33782752 DOI: 10.1007/s00535-021-01774-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Accepted: 02/27/2021] [Indexed: 02/04/2023]
Abstract
BACKGROUND We previously showed that supernatants of Lactobacillus biofilms induced an anti-inflammatory response by affecting the secretion of macrophage-derived cytokines, which was abrogated upon immunodepletion of the stress protein GroEL. METHODS We purified GroEL from L. reuteri and analysed its anti-inflammatory properties in vitro in human macrophages isolated from buffy coats, ex vivo in explants from human biopsies and in vivo in a mouse model of DSS induced intestinal inflammation. As a control, we used GroEL purified (LPS-free) from E. coli. RESULTS We found that L. reuteri GroEL (but not E. coli GroEL) inhibited pro-inflammatory M1-like macrophages markers, and favored M2-like markers. Consequently, L. reuteri GroEL inhibited pro-inflammatory cytokines (TNFα, IL-1β, IFNγ) while favouring an anti-inflammatory secretome. In colon tissues from human biopsies, L. reuteri GroEL was also able to decrease markers of inflammation and apoptosis (caspase 3) induced by LPS. In mice, we found that rectal administration of L. reuteri GroEL (but not E. coli GroEL) inhibited all signs of haemorrhagic colitis induced by DSS including intestinal mucosa degradation, rectal bleeding and weight loss. It also decreased intestinal production of inflammatory cytokines (such as IFNγ) while increasing anti-inflammatory IL-10 and IL-13. These effects were suppressed when animals were immunodepleted in macrophages. From a mechanistic point of view, the effect of L. reuteri GroEL seemed to involve TLR4, since it was lost in TRL4-/- mice, and the activation of a non-canonical TLR4 pathway. CONCLUSIONS L. reuteri GroEL, by affecting macrophage inflammatory features, deserves to be explored as an alternative to probiotics.
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Affiliation(s)
- Alexandre M M Dias
- INSERM, UMR 1231, Laboratoire d'Excellence LipSTIC and « Equipe labellisée par la Ligue Nationale Contre Le Cancer », 7 boulevard Jeanne d'Arc, 21079, Dijon, France
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France
| | - Romain Douhard
- INSERM, UMR 1231, Laboratoire d'Excellence LipSTIC and « Equipe labellisée par la Ligue Nationale Contre Le Cancer », 7 boulevard Jeanne d'Arc, 21079, Dijon, France
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France
| | - François Hermetet
- INSERM, UMR 1231, Laboratoire d'Excellence LipSTIC and « Equipe labellisée par la Ligue Nationale Contre Le Cancer », 7 boulevard Jeanne d'Arc, 21079, Dijon, France
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France
| | - Mathilde Regimbeau
- INSERM, UMR 1231, Laboratoire d'Excellence LipSTIC and « Equipe labellisée par la Ligue Nationale Contre Le Cancer », 7 boulevard Jeanne d'Arc, 21079, Dijon, France
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France
| | - Tatiana E Lopez
- INSERM, UMR 1231, Laboratoire d'Excellence LipSTIC and « Equipe labellisée par la Ligue Nationale Contre Le Cancer », 7 boulevard Jeanne d'Arc, 21079, Dijon, France
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France
| | - Daniel Gonzalez
- INSERM, UMR 1231, Laboratoire d'Excellence LipSTIC and « Equipe labellisée par la Ligue Nationale Contre Le Cancer », 7 boulevard Jeanne d'Arc, 21079, Dijon, France
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France
| | - Sophie Masson
- INSERM, UMR 1231, Laboratoire d'Excellence LipSTIC and « Equipe labellisée par la Ligue Nationale Contre Le Cancer », 7 boulevard Jeanne d'Arc, 21079, Dijon, France
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France
| | - Guillaume Marcion
- INSERM, UMR 1231, Laboratoire d'Excellence LipSTIC and « Equipe labellisée par la Ligue Nationale Contre Le Cancer », 7 boulevard Jeanne d'Arc, 21079, Dijon, France
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France
| | - Killian Chaumonnot
- INSERM, UMR 1231, Laboratoire d'Excellence LipSTIC and « Equipe labellisée par la Ligue Nationale Contre Le Cancer », 7 boulevard Jeanne d'Arc, 21079, Dijon, France
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France
| | - Burhan Uyanik
- INSERM, UMR 1231, Laboratoire d'Excellence LipSTIC and « Equipe labellisée par la Ligue Nationale Contre Le Cancer », 7 boulevard Jeanne d'Arc, 21079, Dijon, France
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France
| | - Sébastien Z Causse
- INSERM, UMR 1231, Laboratoire d'Excellence LipSTIC and « Equipe labellisée par la Ligue Nationale Contre Le Cancer », 7 boulevard Jeanne d'Arc, 21079, Dijon, France
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France
| | | | - Tarik Hadi
- INSERM, UMR 1231, Laboratoire d'Excellence LipSTIC and « Equipe labellisée par la Ligue Nationale Contre Le Cancer », 7 boulevard Jeanne d'Arc, 21079, Dijon, France
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France
| | - Christelle Basset
- INSERM, UMR 1231, Laboratoire d'Excellence LipSTIC and « Equipe labellisée par la Ligue Nationale Contre Le Cancer », 7 boulevard Jeanne d'Arc, 21079, Dijon, France
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France
| | - Johanna Chluba
- INSERM, UMR 1231, Laboratoire d'Excellence LipSTIC and « Equipe labellisée par la Ligue Nationale Contre Le Cancer », 7 boulevard Jeanne d'Arc, 21079, Dijon, France
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France
| | - Jacques Grober
- INSERM, UMR 1231, Laboratoire d'Excellence LipSTIC and « Equipe labellisée par la Ligue Nationale Contre Le Cancer », 7 boulevard Jeanne d'Arc, 21079, Dijon, France
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France
| | | | - Fabrice Neiers
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France
- Centre des Sciences du Goût et de l'Alimentation, INRA, CNRS, Dijon, France
| | - Pablo Ortega-Deballon
- INSERM, UMR 1231, Laboratoire d'Excellence LipSTIC and « Equipe labellisée par la Ligue Nationale Contre Le Cancer », 7 boulevard Jeanne d'Arc, 21079, Dijon, France
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France
- Centre Hospitalier Universitaire, Dijon, France
| | - Oleg N Demidov
- INSERM, UMR 1231, Laboratoire d'Excellence LipSTIC and « Equipe labellisée par la Ligue Nationale Contre Le Cancer », 7 boulevard Jeanne d'Arc, 21079, Dijon, France
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France
- Institute of Cytology, RAS, St. Petersburg, Russia
| | - Frédéric Lirussi
- INSERM, UMR 1231, Laboratoire d'Excellence LipSTIC and « Equipe labellisée par la Ligue Nationale Contre Le Cancer », 7 boulevard Jeanne d'Arc, 21079, Dijon, France
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France
- Centre Hospitalier Universitaire, Dijon, France
| | - Carmen Garrido
- INSERM, UMR 1231, Laboratoire d'Excellence LipSTIC and « Equipe labellisée par la Ligue Nationale Contre Le Cancer », 7 boulevard Jeanne d'Arc, 21079, Dijon, France.
- Faculty of Medicine and Pharmacy, Université de Bourgogne Franche-Comté, Dijon, France.
- Anticancer Centre Georges-François Leclerc (CGFL), Dijon, France.
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Pseudomonas aeruginosa DnaK Stimulates the Production of Pentraxin 3 via TLR4-Dependent NF-κB and ERK Signaling Pathways. Int J Mol Sci 2021; 22:ijms22094652. [PMID: 33925033 PMCID: PMC8125396 DOI: 10.3390/ijms22094652] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 04/26/2021] [Accepted: 04/26/2021] [Indexed: 01/16/2023] Open
Abstract
Microbe-derived factors trigger innate immune responses through the production of inflammatory mediators, including pentraxin 3 (PTX3). PTX3 is a soluble pattern recognition molecule that stimulates the clearance of clinically important bacterial pathogens such as Pseudomonas aeruginosa. However, the P. aeruginosa factors responsible for the production of PTX3 have not been elucidated. In this study, we found that P. aeruginosa DnaK, a homolog of heat shock protein 70, induced PTX3 production. Induction was mediated by intracellular signals transmitted through the Toll-like receptor 4 (TLR4) signaling pathway. Following receptor engagement, the stimulatory signals were relayed initially through the nuclear factor kappa B (NF-κB) signaling pathway and subsequently by extracellular signal-regulated kinases (ERK), which are mitogen-activated protein kinases. However, ERK activation was negatively controlled by NF-κB, implying the existence of negative crosstalk between the NF-κB and the ERK pathways. These data suggest that P. aeruginosa DnaK acts as a pathogen-associated molecular pattern to trigger modulation of host defense responses via production of PTX3.
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Zheng B, Liu W, Xu H, Li J, Jiang X. Occurrence and distribution of antimicrobial resistance genes in the soil of an industrial park in China: A metagenomics survey. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 273:116467. [PMID: 33453699 DOI: 10.1016/j.envpol.2021.116467] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 01/03/2021] [Accepted: 01/06/2021] [Indexed: 06/12/2023]
Abstract
As zoned areas of industries, industrial parks have great impacts on the environment. Several studies have demonstrated that chemical compounds and heavy metals released from industrial parks can contaminate soil, water, and air. However, as an emerging pollutant, antimicrobial resistance genes (ARGs) in industrial parks have not yet been investigated. Here, we collected soil samples from 35 sites in an industrial park in China and applied a metagenomics strategy to profile the ARGs and virulence factors (VFs). We further compared the relative abundance of ARGs between the sites (TZ_31-35) located in a beta-lactam antimicrobial-producing factory and other sites (TZ_1-30) in this industrial park. Metagenomic sequencing and assembly generated 14, 383, 065 contigs and 17, 631, 051 open reading frames (ORFs). Taxonomy annotation revealed Proteobacteria and Actinobacteria as the most abundant phylum and class, respectively. The 32 pathogenic bacterial genera listed in the virulence factor database (VFDB) were all identified from the soil metagenomes in this industrial park. In total, 685,354 ARGs (3.89% of the ORFs) and 272,694 virulence factors (VFs) (1.55% of the ORFs) were annotated. These ARGs exhibited resistance to several critically important antimicrobials, such as rifampins, fluroquinolones, and beta-lactams. In addition, no significant difference in the relative abundance of ARGs was observed between sites TZ_31-35 and TZ_1-30, indicating that ARGs have already disseminated widely in this industrial park. The present study gave us a better understanding of the whole picture of the resistome and virulome in the soil of the industrial park and suggested that we should treat the industrial park as a whole in the surveillance and maintenance of ARGs.
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Affiliation(s)
- Beiwen Zheng
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Wenhong Liu
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Hao Xu
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Junfeng Li
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Xiawei Jiang
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.
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9
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Jeon J, Lee Y, Yu H, Ha UH. HSP70-Homolog DnaK of Pseudomonas aeruginosa Increases the Production of IL-27 through Expression of EBI3 via TLR4-Dependent NF-κB and TLR4-Independent Akt Signaling. Int J Mol Sci 2020; 21:ijms21239194. [PMID: 33276561 PMCID: PMC7730953 DOI: 10.3390/ijms21239194] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 11/29/2020] [Accepted: 12/01/2020] [Indexed: 12/26/2022] Open
Abstract
IL-27, a heterodimeric cytokine composed of the p28 subunit and Epstein–Barr virus-induced gene 3 (EBI3), acts as a potent immunosuppressant and thus limits pathogenic inflammatory responses. IL-27 is upregulated upon Pseudomonas aeruginosa infection in septic mice, increasing susceptibility to the infection and decreasing clearance of the pathogen. However, it remains unclear which P. aeruginosa-derived molecules promote production of IL-27. In this study, we explored the mechanism by which P. aeruginosa DnaK, a heat shock protein 70-like protein, induces EBI3 expression, thereby promoting production of IL-27. Upregulation of EBI3 expression did not lead to an increase in IL-35, which consists of the p35 subunit and EBI3. The IL-27 production in response to DnaK was biologically active, as reflected by stimulation of IL-10 production. DnaK-mediated expression of EBI3 was driven by two distinct signaling pathways, NF-κB and Akt. However, NF-κB is linked to TLR4-associated signaling pathways, whereas Akt is not. Taken together, our results reveal that P. aeruginosa DnaK potently upregulates EBI3 expression, which in turn drives production of the prominent anti-inflammatory cytokine IL-27, as a consequence of TLR4-dependent activation of NF-κB and TLR4-independent activation of the Akt signaling pathway.
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Affiliation(s)
| | | | | | - Un-Hwan Ha
- Correspondence: ; Tel.: +82-44-860-1418; Fax: +82-44-860-1598
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10
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Lee MK, Lee Y, Huh JW, Chen H, Wu W, Ha UH. The Pseudomonas aeruginosa HSP90-like protein HtpG regulates IL-8 expression through NF-κB/p38 MAPK and CYLD signaling triggered by TLR4 and CD91. Microbes Infect 2020; 22:558-566. [DOI: 10.1016/j.micinf.2020.08.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 08/28/2020] [Accepted: 08/29/2020] [Indexed: 01/04/2023]
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Lee JH, Jeon J, Bai F, Wu W, Ha UH. Negative regulation of interleukin 1β expression in response to DnaK from Pseudomonas aeruginosa via the PI3K/PDK1/FoxO1 pathways. Comp Immunol Microbiol Infect Dis 2020; 73:101543. [PMID: 32937288 DOI: 10.1016/j.cimid.2020.101543] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 08/06/2020] [Accepted: 08/28/2020] [Indexed: 12/11/2022]
Abstract
Interleukin (IL)-1β is crucial for a wide range of inflammatory responses. Previously, we reported that IL-1β is produced in response to Pseudomonas aeruginosa-derived DnaK via NF-κB and JNK pathways; however, the signaling pathways that counter the process to maintain IL-1β homeostasis are unknown. Here, we show that DnaK-mediated expression of IL1β is increased markedly in macrophages upon blockade of PI3K/PDK1. This was verified by measuring released IL-1β protein. The negative effect of PI3K on IL-1β production was dependent on suppression of both NF-κB and JNK activation. Intriguingly, PDK1 (an underlying mediator of PI3K) acted as an upstream regulator for the activation of NF-κB, but downregulated JNK activation. Furthermore, production of IL-1β and activation of JNK were triggered by inhibition of phosphorylated FoxO1; phosphorylation of FoxO1 was controlled by PDK1 signaling in response to DnaK. Thus, IL-1β production is modulated by P. aeruginosa-derived DnaK via cross-talk between JNK and PI3K/PDK1/FoxO1 pathways.
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Affiliation(s)
- Jung-Hoon Lee
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 30019, Republic of Korea
| | - Jisu Jeon
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 30019, Republic of Korea
| | - Fang Bai
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Molecular Microbiology and Technology of the Ministry of Education, Department of Microbiology, Nankai University, Tianjin 300071, China
| | - Weihui Wu
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Molecular Microbiology and Technology of the Ministry of Education, Department of Microbiology, Nankai University, Tianjin 300071, China
| | - Un-Hwan Ha
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 30019, Republic of Korea.
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Transcriptomic determinants of the response of ST-111 Pseudomonas aeruginosa AG1 to ciprofloxacin identified by a top-down systems biology approach. Sci Rep 2020; 10:13717. [PMID: 32792590 PMCID: PMC7427096 DOI: 10.1038/s41598-020-70581-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 06/25/2020] [Indexed: 12/13/2022] Open
Abstract
Pseudomonas aeruginosa is an opportunistic pathogen that thrives in diverse environments and causes a variety of human infections. Pseudomonas aeruginosa AG1 (PaeAG1) is a high-risk sequence type 111 (ST-111) strain isolated from a Costa Rican hospital in 2010. PaeAG1 has both blaVIM-2 and blaIMP-18 genes encoding for metallo-β-lactamases, and it is resistant to β-lactams (including carbapenems), aminoglycosides, and fluoroquinolones. Ciprofloxacin (CIP) is an antibiotic commonly used to treat P. aeruginosa infections, and it is known to produce DNA damage, triggering a complex molecular response. In order to evaluate the effects of a sub-inhibitory CIP concentration on PaeAG1, growth curves using increasing CIP concentrations were compared. We then measured gene expression using RNA-Seq at three time points (0, 2.5 and 5 h) after CIP exposure to identify the transcriptomic determinants of the response (i.e. hub genes, gene clusters and enriched pathways). Changes in expression were determined using differential expression analysis and network analysis using a top–down systems biology approach. A hybrid model using database-based and co-expression analysis approaches was implemented to predict gene–gene interactions. We observed a reduction of the growth curve rate as the sub-inhibitory CIP concentrations were increased. In the transcriptomic analysis, we detected that over time CIP treatment resulted in the differential expression of 518 genes, showing a complex impact at the molecular level. The transcriptomic determinants were 14 hub genes, multiple gene clusters at different levels (associated to hub genes or as co-expression modules) and 15 enriched pathways. Down-regulation of genes implicated in several metabolism pathways, virulence elements and ribosomal activity was observed. In contrast, amino acid catabolism, RpoS factor, proteases, and phenazines genes were up-regulated. Remarkably, > 80 resident-phage genes were up-regulated after CIP treatment, which was validated at phenomic level using a phage plaque assay. Thus, reduction of the growth curve rate and increasing phage induction was evidenced as the CIP concentrations were increased. In summary, transcriptomic and network analyses, as well as the growth curves and phage plaque assays provide evidence that PaeAG1 presents a complex, concentration-dependent response to sub-inhibitory CIP exposure, showing pleiotropic effects at the systems level. Manipulation of these determinants, such as phage genes, could be used to gain more insights about the regulation of responses in PaeAG1 as well as the identification of possible therapeutic targets. To our knowledge, this is the first report of the transcriptomic analysis of CIP response in a ST-111 high-risk P. aeruginosa strain, in particular using a top-down systems biology approach.
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Li H, Lin L, Chong L, Gu S, Wen S, Yu G, Hu X, Dong L, Zhang H, Li C. Time-resolved mRNA and miRNA expression profiling reveals crucial coregulation of molecular pathways involved in epithelial-pneumococcal interactions. Immunol Cell Biol 2020; 98:726-742. [PMID: 32592597 PMCID: PMC7586809 DOI: 10.1111/imcb.12371] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 05/29/2020] [Accepted: 06/23/2020] [Indexed: 12/31/2022]
Abstract
Streptococcus pneumoniae is a major causative agent of pneumonia worldwide and its complex interaction with the lung epithelium has not been thoroughly characterized. In this study, we exploited both RNA‐sequencing and microRNA (miRNA)‐sequencing approaches to monitor the transcriptional changes in human lung alveolar epithelial cells infected by S. pneumoniae in a time‐resolved manner. A total of 1330 differentially expressed (DE) genes and 45 DE miRNAs were identified in all comparisons during the infection process. Clustering analysis showed that all DE genes were grouped into six clusters, several of which were primarily involved in inflammatory or immune responses. In addition, target gene enrichment analyses identified 11 transcription factors that were predicted to link at least one of four clusters, revealing transcriptional coregulation of multiple processes or pathways by common transcription factors. Notably, pharmacological treatment suggested that phosphorylation of p65 is important for optimal transcriptional regulation of target genes in epithelial cells exposed to pathogens. Furthermore, network‐based clustering analysis separated the DE genes negatively regulated by DE miRNAs into two functional modules (M1 and M2), with an enrichment in immune responses and apoptotic signaling pathways for M1. Integrated network analyses of potential regulatory interactions in M1 revealed that multiple DE genes related to immunity and apoptosis were regulated by multiple miRNAs, indicating the coordinated regulation of multiple genes by multiple miRNAs. In conclusion, time‐series expression profiling of messenger RNA and miRNA provides a wealth of information for global transcriptional changes, and offers comprehensive insight into the molecular mechanisms underlying host–pathogen interactions.
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Affiliation(s)
- Haiyan Li
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Li Lin
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Lei Chong
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Shuge Gu
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Shunhang Wen
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Gang Yu
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiaoguang Hu
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Lin Dong
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Hailin Zhang
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Changchong Li
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
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14
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Song JR, Fu YW, Li P, Du T, Du XJ, Wang S. Protective Effect of Recombinant Proteins of Cronobacter Sakazakii During Pregnancy on the Offspring. Front Cell Infect Microbiol 2020; 10:15. [PMID: 32076598 PMCID: PMC7006456 DOI: 10.3389/fcimb.2020.00015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 01/13/2020] [Indexed: 01/14/2023] Open
Abstract
Cronobacter sakazakii is a food-borne pathogen carried in milk powder that can cause severe bacteremia, enterocolitis, and meningitis in newborns, which can lead to death of newborns. Preventing infection by this pathogen is significant to the health of newborns. Since infants and young children are the main target group of C. sakazakii, it is considered that maternal immunity can enhance the protection of newborns. Previous studies showed that two proteins of C. sakazakii (GroEL and OmpX) exhibited high expression levels and elicited strong immune reactions, suggesting their potential as vaccine candidates. In this study, GroEL and OmpX were recombinantly expressed in Escherichia coli and purified as immunogens to immunize pregnant rats. Three days after birth, the progeny were challenged with C. sakazakii to determine the protective effect of maternal immunity on the offspring. The results showed that immunization during pregnancy decreased bacterial load in the brain and blood, reduced brain and intestine damage, and significantly increased specific antibody titers in the offspring. Immunization with the recombinant proteins significantly increased cytokine levels in the serum of the progeny. The group whose mothers were immunized with OmpX produced more IL-4, while the group whose mothers were immunized with GroEL produced more IFN-γ, indicating that the immunogens enhanced the Th2 and Th1 responses, respectively. However, although the immune response was induced by both proteins, only the offspring of the pregnant rats immunized with OmpX or OmpX/GroEL mixture showed delayed death, possibly because immunization with OmpX led to a stronger humoral immune response in the offspring, suggesting that OmpX was a better vaccine candidate than GroEL. This study first reported that exposure to C. sakazakii proteins during pregnancy could improve the offspring's ability to resist infection caused by this pathogen.
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Affiliation(s)
- Jia-Rong Song
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Yan-Wen Fu
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Ping Li
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Ting Du
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Xin-Jun Du
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Shuo Wang
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China.,Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, China
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15
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MicroRNAs as new immunity regulators in viral and bacterial infections. ACTA BIOLOGICA 2020. [DOI: 10.18276/ab.2020.27-09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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16
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Lee JH, Jeon J, Bai F, Jin S, Wu W, Ha UH. The Pseudomonas aeruginosa HSP70-like protein DnaK induces IL-1β expression via TLR4-dependent activation of the NF-κB and JNK signaling pathways. Comp Immunol Microbiol Infect Dis 2019; 67:101373. [PMID: 31704499 DOI: 10.1016/j.cimid.2019.101373] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 10/12/2019] [Accepted: 10/15/2019] [Indexed: 12/18/2022]
Abstract
IL-1β expression is increased in response to P. aeruginosa infection, but the responsible proteins have not been clearly elucidated. Here, we demonstrate for the first time that IL-1β expression is induced in response to the heat shock protein 70-like protein DnaK. Treatment with recombinant DnaK (rDnaK) increased IL-1β expression in a dose- and time-dependent manner, and the release of mature IL-1β in response to rDnaK was detected to an extent similar to that stimulated by the well-known agonists, lipopolysaccharide and nigericin. rDnaK-mediated IL-1β expression was driven by the NF-κB signaling pathway. In addition, expression was controlled by the JNK signaling pathway, although these two signaling cascades act independently upon rDnaK stimulation. Finally, rDnaK-induced IL-1β expression was initiated via the action of TLR4. Taken together, the data reveal that P. aeruginosa-derived DnaK induces expression of IL-1β via TLR4-dependent activation of the NF-κB and JNK signaling pathways.
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Affiliation(s)
- Jung-Hoon Lee
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 30019, Republic of Korea
| | - Jisu Jeon
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 30019, Republic of Korea
| | - Fang Bai
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Molecular Microbiology and Technology of the Ministry of Education, Department of Microbiology, Nankai University, Tianjin 300071, China
| | - Shouguang Jin
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, Florida 32610, USA
| | - Weihui Wu
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Molecular Microbiology and Technology of the Ministry of Education, Department of Microbiology, Nankai University, Tianjin 300071, China
| | - Un-Hwan Ha
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 30019, Republic of Korea.
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Artigas-Jerónimo S, Alberdi P, Villar Rayo M, Cabezas-Cruz A, Prados PJE, Mateos-Hernández L, de la Fuente J. Anaplasma phagocytophilum modifies tick cell microRNA expression and upregulates isc-mir-79 to facilitate infection by targeting the Roundabout protein 2 pathway. Sci Rep 2019; 9:9073. [PMID: 31235752 PMCID: PMC6591238 DOI: 10.1038/s41598-019-45658-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 06/12/2019] [Indexed: 12/13/2022] Open
Abstract
The microRNAs (miRNAs) are a class of small noncoding RNAs that have important regulatory roles in multicellular organisms including innate and adaptive immune pathways to control bacterial, parasite and viral infections, and pathogens could modify host miRNA profile to facilitate infection and multiplication. Therefore, understanding the function of host miRNAs in response to pathogen infection is relevant to characterize host-pathogen molecular interactions and to provide new targets for effective new interventions for the control infectious diseases. The objective of this study was to characterize the dynamics and functional significance of the miRNA response of the tick vector Ixodes scapularis in response to Anaplasma phagocytophilum infection, the causative agent of human and animal granulocytic anaplasmosis. To address this objective, the composition of tick miRNAs, functional annotation, and expression profiling was characterized using high throughout RNA sequencing in uninfected and A. phagocytophilum-infected I. scapularis ISE6 tick cells, a model for tick hemocytes involved in pathogen infection. The results provided new evidences on the role of tick miRNA during pathogen infection, and showed that A. phagocytophilum modifies I. scapularis tick cell miRNA profile and upregulates isc-mir-79 to facilitate infection by targeting the Roundabout protein 2 (Robo2) pathway. Furthermore, these results suggested new targets for interventions to control pathogen infection in ticks.
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Affiliation(s)
- Sara Artigas-Jerónimo
- SaBio. Instituto de Investigación en Recursos Cinegéticos IREC-CSIC-UCLM-JCCM, Ronda de Toledo s/n, 13005, Ciudad, Real, Spain
| | - Pilar Alberdi
- SaBio. Instituto de Investigación en Recursos Cinegéticos IREC-CSIC-UCLM-JCCM, Ronda de Toledo s/n, 13005, Ciudad, Real, Spain
| | - Margarita Villar Rayo
- SaBio. Instituto de Investigación en Recursos Cinegéticos IREC-CSIC-UCLM-JCCM, Ronda de Toledo s/n, 13005, Ciudad, Real, Spain
| | - Alejandro Cabezas-Cruz
- UMR BIPAR, INRA, Ecole Nationale Vétérinaire d'Alfort, ANSES, Université Paris-Est, 94700, Maisons-Alfort, France
| | - Pedro J Espinosa Prados
- SaBio. Instituto de Investigación en Recursos Cinegéticos IREC-CSIC-UCLM-JCCM, Ronda de Toledo s/n, 13005, Ciudad, Real, Spain
| | - Lourdes Mateos-Hernández
- SaBio. Instituto de Investigación en Recursos Cinegéticos IREC-CSIC-UCLM-JCCM, Ronda de Toledo s/n, 13005, Ciudad, Real, Spain
- UMR BIPAR, INRA, Ecole Nationale Vétérinaire d'Alfort, ANSES, Université Paris-Est, 94700, Maisons-Alfort, France
| | - José de la Fuente
- SaBio. Instituto de Investigación en Recursos Cinegéticos IREC-CSIC-UCLM-JCCM, Ronda de Toledo s/n, 13005, Ciudad, Real, Spain.
- Department of Veterinary Pathobiology, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK, 74078, USA.
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18
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Persyn E, Sassi M, Aubry M, Broly M, Delanou S, Asehnoune K, Caroff N, Crémet L. Rapid genetic and phenotypic changes in Pseudomonas aeruginosa clinical strains during ventilator-associated pneumonia. Sci Rep 2019; 9:4720. [PMID: 30886315 PMCID: PMC6423012 DOI: 10.1038/s41598-019-41201-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 02/27/2019] [Indexed: 11/24/2022] Open
Abstract
Treatment with antibiotics leads to the selection of isolates with increased resistance. We investigated if evolution towards resistance was associated with virulence changes, in the context of P. aeruginosa ventilator-associated pneumonia (VAP). Four patients were selected because they had multiple VAP episodes during short periods (12 days to 5 weeks), with emergence of resistance. We performed whole-genome sequencing of 12 P. aeruginosa from bronchoalveolar lavages or blood culture (3 isolates per patient). Production of quorum sensing-dependent virulence factors, serum resistance, cytotoxicity against A549 cells, biofilm production, and twitching motility were studied. Each patient was infected with a unique strain. For all patients, resistance development was explained by genetic events in ampD, mexR or oprD. Additional variations were detected in virulence- and/or fitness-associated genes (algB, gacA, groEL, lasR, mpl, pilE, pilM, rhlR) depending on the strain. We noticed a convergence towards quorum sensing deficiency, correlated with a decrease of pyocyanin and protease production, survival in serum, twitching motility and cytotoxicity. In one patient, changes in pilM and pilE were related to enhanced twitching. We show that the emergence of resistance in P. aeruginosa is associated with virulence modification, even in acute infections. The consequences of this short-term pathoadaptation need to be explored.
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Affiliation(s)
- Elise Persyn
- EA3826 Université de Nantes, IRS2 Nantes Biotech, Nantes Cedex 1, F-44100, France.
- CHU Nantes, 9 quai Moncousu, Nantes Cedex 1, F-44093, France.
| | - Mohamed Sassi
- Inserm U835, Université de Rennes, Rennes, F-35000, France
| | - Marc Aubry
- Université de Rennes, CNRS, IGDR [(Institut de génétique et développement de Rennes)] - UMR 6290, F-35000, Rennes, France
- Université de Rennes, Plateforme GEH, CNRS, Inserm, BIOSIT - UMS 3480, US_S 018, F-35000, Rennes, France
| | - Martin Broly
- CHU Nantes, 9 quai Moncousu, Nantes Cedex 1, F-44093, France
| | - Sandie Delanou
- EA3826 Université de Nantes, IRS2 Nantes Biotech, Nantes Cedex 1, F-44100, France
| | - Karim Asehnoune
- EA3826 Université de Nantes, IRS2 Nantes Biotech, Nantes Cedex 1, F-44100, France
- CHU Nantes, 9 quai Moncousu, Nantes Cedex 1, F-44093, France
| | - Nathalie Caroff
- EA3826 Université de Nantes, IRS2 Nantes Biotech, Nantes Cedex 1, F-44100, France
| | - Lise Crémet
- EA3826 Université de Nantes, IRS2 Nantes Biotech, Nantes Cedex 1, F-44100, France
- CHU Nantes, 9 quai Moncousu, Nantes Cedex 1, F-44093, France
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New Insights on the Pathogenesis of Takayasu Arteritis: Revisiting the Microbial Theory. Pathogens 2018; 7:pathogens7030073. [PMID: 30200570 PMCID: PMC6160975 DOI: 10.3390/pathogens7030073] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 09/01/2018] [Accepted: 09/05/2018] [Indexed: 02/07/2023] Open
Abstract
Takayasu arteritis (TAK) is a chronic vasculitis that mainly affects the aorta, its major branches, and the pulmonary arteries. Since the description of the first case by Mikito Takayasu in 1908, several aspects of this rare disease, including the epidemiology, diagnosis, and the appropriate clinical assessment, have been substantially defined. Nevertheless, while it is well-known that TAK is associated with a profound inflammatory process, possibly rooted to an autoimmune disorder, its precise etiology has remained largely unknown. Efforts to identify the antigen(s) that trigger autoimmunity in this disease have been unsuccessful, however, it is likely that viruses or bacteria, by a molecular mimicry mechanism, initiate or propagate the auto-immune process in this disease. In this article, we summarize recent advances in the understanding of TAK, with emphasis on new insights related to the pathogenesis of this entity that may contribute to the design of novel therapeutic approaches.
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20
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Nejad C, Stunden HJ, Gantier MP. A guide to miRNAs in inflammation and innate immune responses. FEBS J 2018; 285:3695-3716. [DOI: 10.1111/febs.14482] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 03/08/2018] [Accepted: 04/18/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Charlotte Nejad
- Centre for Innate Immunity and Infectious Diseases Hudson Institute of Medical Research Clayton Australia
- Department of Molecular and Translational Science Monash University Clayton Australia
| | - H. James Stunden
- Institute of Innate Immunity Biomedical Center University Hospitals Bonn Bonn Germany
| | - Michael P. Gantier
- Centre for Innate Immunity and Infectious Diseases Hudson Institute of Medical Research Clayton Australia
- Department of Molecular and Translational Science Monash University Clayton Australia
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