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Dawar FU, Shi Y, Zhou Y, Jin X, Zhao Z. Bacterial infection-biased abundance of proteins in the skin mucus of obscure puffer (Takifugu Obscurus). COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2024; 52:101306. [PMID: 39116716 DOI: 10.1016/j.cbd.2024.101306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 07/31/2024] [Accepted: 08/02/2024] [Indexed: 08/10/2024]
Abstract
The skin mucus of fish is equipped with immunological and antimicrobial peptides that confer protection against invading pathogens. The skin mucus has been studied in fish however information regarding its immunological roles in bacterial infection is rare. This study highlighted the proteins and peptides in the skin mucus of Obscure puffer Takifugu obscurus that quantitatively altered against Aeromonas hydrophila infection. We infected the fish through bath immersion, intraperitonially, and treated with PBS (control) then compared the level of proteins in the skin mucus among the groups using liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis. The Tandem Mass Tag (TMT) based quantification showed that 4896 proteins were Deferentially Quantified Proteins (DQPs), based on 19,751 unique peptides. Of which 170 were depleted (decreased in abundance) and 69 were abundant in comparison of Bath Treated (BT) vs Control (C) groups. Similarly, 76 DQPs were depleted and 70 were abundant in comparison of Treated (T) vs BT groups. Further, 126 DQPs were depleted, and 34 were abundant in comparison to T vs C groups. The DQPs we report were mostly immunological and were involved in unique biological functions and pathways. The interesting protein we report, where some of the proteins are for the first time in fish, shows the protein-rich structure of the mucus of fish, which may act as a biomarker to be targeted for bacterial disease therapy in fish and ultimately hint to the way of making resistance in fish against bacterial pathogens.
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Affiliation(s)
- Farman Ullah Dawar
- Jiangsu Province Engineering Research Center for Marine Bio-resources Sustainable Utilization, College of Oceanography, Hohai University, 1 Xikang Road, Nanjing, Jiangsu 210098, China; Laboratory of Fisheries and Aquaculture, Department of Zoology, Kohat University of Science and Technology Kohat, 26000, Khyber Pakhtunkhwa, Pakistan
| | - Yan Shi
- Jiangsu Province Engineering Research Center for Marine Bio-resources Sustainable Utilization, College of Oceanography, Hohai University, 1 Xikang Road, Nanjing, Jiangsu 210098, China
| | - Yu Zhou
- Jiangsu Province Engineering Research Center for Marine Bio-resources Sustainable Utilization, College of Oceanography, Hohai University, 1 Xikang Road, Nanjing, Jiangsu 210098, China
| | - Xingkun Jin
- Jiangsu Province Engineering Research Center for Marine Bio-resources Sustainable Utilization, College of Oceanography, Hohai University, 1 Xikang Road, Nanjing, Jiangsu 210098, China
| | - Zhe Zhao
- Jiangsu Province Engineering Research Center for Marine Bio-resources Sustainable Utilization, College of Oceanography, Hohai University, 1 Xikang Road, Nanjing, Jiangsu 210098, China.
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2
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Dai P, Wu Y, Gao Y, Li M, Zhu M, Xu H, Feng X, Jin Y, Zhang X. Multiomics analysis of platelet-rich plasma promoting biological performance of mesenchymal stem cells. BMC Genomics 2024; 25:564. [PMID: 38840037 PMCID: PMC11151483 DOI: 10.1186/s12864-024-10329-8] [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: 11/30/2023] [Accepted: 04/19/2024] [Indexed: 06/07/2024] Open
Abstract
Mesenchymal Stem Cells are ideal seed cells for tissue repair and cell therapy and have promising applications in regenerative medicine and tissue engineering. Using Platelet-Rich Plasma as an adjuvant to create and improve the microenvironment for Mesenchymal Stem Cells growth can enhance the biological properties of Mesenchymal Stem Cells and improve the efficacy of cell therapy. However, the mechanism by which Platelet-Rich Plasma improves the biological performance of Mesenchymal Stem Cells is still unknown. In this study, by examining the effects of Platelet-Rich Plasma on the biological performance of Mesenchymal Stem Cells, combined with multiomics analysis (Transcriptomics, Proteomics and Metabolomics) and related tests, we analyzed the specific pathways, related mechanisms and metabolic pathways of Platelet-Rich Plasma to improve the biological performance of Mesenchymal Stem Cells. In an in vitro cell culture system, the biological performance of Mesenchymal Stem Cells was significantly improved after replacing Foetal Bovine Serum with Platelet-Rich Plasma, and the genes (ESM1, PDGFB, CLEC7A, CCR1 and ITGA6 et al.) related to cell proliferation, adhesion, growth, migration and signal transduction were significantly upregulated. Platelet-Rich Plasma can enhance the secretion function of MSC exosomes, significantly upregulate many proteins related to tissue repair, immune regulation and anti-infection, and enhance the repair effect of exosomes on skin injury. After replacing Foetal Bovine Serum with Platelet-Rich Plasma, Mesenchymal Stem Cells underwent metabolic reprogramming, the metabolism of amino acids and fatty acids and various signaling pathways were changed, the anabolic pathways of various proteins were enhanced. These results provide a theoretical and technical reference for optimizing the Mesenchymal Stem Cells culture system, improving the biological characteristics and clinical application effects of Mesenchymal Stem Cells.
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Affiliation(s)
- Pengxiu Dai
- The College of Veterinary Medicine, Northwest A and F University, Yangling, 712100, Shaanxi, China
| | - Yi Wu
- The College of Veterinary Medicine, Northwest A and F University, Yangling, 712100, Shaanxi, China
| | - Yaxin Gao
- The College of Veterinary Medicine, Northwest A and F University, Yangling, 712100, Shaanxi, China
| | - Mengnan Li
- The College of Veterinary Medicine, Northwest A and F University, Yangling, 712100, Shaanxi, China
| | - Mingde Zhu
- The College of Veterinary Medicine, Northwest A and F University, Yangling, 712100, Shaanxi, China
| | - Haojie Xu
- The College of Veterinary Medicine, Northwest A and F University, Yangling, 712100, Shaanxi, China
| | - Xiancheng Feng
- The College of Veterinary Medicine, Northwest A and F University, Yangling, 712100, Shaanxi, China
| | - Yaping Jin
- The College of Veterinary Medicine, Northwest A and F University, Yangling, 712100, Shaanxi, China.
| | - Xinke Zhang
- The College of Veterinary Medicine, Northwest A and F University, Yangling, 712100, Shaanxi, China.
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3
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Guzmán-Beltrán S, Juárez E, Cruz-Muñoz BL, Páez-Cisneros CA, Sarabia C, González Y. Bactericidal Permeability-Increasing Protein (BPI) Inhibits Mycobacterium tuberculosis Growth. Biomolecules 2024; 14:475. [PMID: 38672491 PMCID: PMC11048543 DOI: 10.3390/biom14040475] [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: 02/17/2024] [Revised: 04/02/2024] [Accepted: 04/05/2024] [Indexed: 04/28/2024] Open
Abstract
Bactericidal permeability-increasing protein (BPI) is a multifunctional cationic protein produced by neutrophils, eosinophils, fibroblasts, and macrophages with antibacterial anti-inflammatory properties. In the context of Gram-negative infection, BPI kills bacteria, neutralizes the endotoxic activity of lipopolysaccharides (LPSs), and, thus, avoids immune hyperactivation. Interestingly, BPI increases in patients with Gram-positive meningitis, interacts with lipopeptides and lipoteichoic acids of Gram-positive bacteria, and significantly enhances the immune response in peripheral blood mononuclear cells. We evaluated the antimycobacterial and immunoregulatory properties of BPI in human macrophages infected with Mycobacterium tuberculosis. Our results showed that recombinant BPI entered macrophages, significantly reduced the intracellular growth of M. tuberculosis, and inhibited the production of the proinflammatory cytokine tumor necrosis factor-alpha (TNF-α). Furthermore, BPI decreased bacterial growth directly in vitro. These data suggest that BPI has direct and indirect bactericidal effects inhibiting bacterial growth and potentiating the immune response in human macrophages and support that this new protein's broad-spectrum antibacterial activity has the potential for fighting tuberculosis.
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Affiliation(s)
- Silvia Guzmán-Beltrán
- Department of Microbiology, National Institute for Respiratory Diseases Ismael Cosio Villegas, Mexico City 14080, Mexico; (E.J.); (B.L.C.-M.); (C.A.P.-C.); (C.S.); (Y.G.)
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4
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Robledo D, Ogwang J, Byakora E, Schulze JN, Benda KK, Fraslin C, Salisbury S, Solimo M, Mayega JF, Peter B, Masembe C, Houston R, Mukiibi R. Genetic diversity and population structure of farmed and wild Nile tilapia (Oreochromis niloticus) in Uganda: The potential for aquaculture selection and breeding programs. Genomics 2024; 116:110781. [PMID: 38182036 DOI: 10.1016/j.ygeno.2024.110781] [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: 09/15/2023] [Revised: 12/17/2023] [Accepted: 01/01/2024] [Indexed: 01/07/2024]
Abstract
Nile tilapia is one of the most important aquaculture species globally, providing high-quality animal protein for human nutrition and a source of income to sustain the livelihoods of many people in low- and middle-income countries. This species is native to Africa and nowadays farmed throughout the world. However, the genetic makeup of its native populations remains poorly characterized. Additionally, there has been important introgression and movement of farmed (as well as wild) strains connected to tilapia aquaculture in Africa, yet the relationship between wild and farmed populations is unknown in most of the continent. Genetic characterization of the species in Africa has the potential to support the conservation of the species as well as supporting selective breeding to improve the indigenous strains for sustainable and profitable aquaculture production. In the current study, a total of 382 fish were used to investigate the genetic structure, diversity, and ancestry within and between Ugandan Nile tilapia populations from three major lakes including Lake Albert (L. Albert), Lake Kyoga (L. Kyoga) and Lake Victoria (L. Victoria), and 10 hatchery farms located in the catchment regions of these lakes. Our results showed clear genetic structure of the fish sourced from the lakes, with L. Kyoga and L. Albert populations showing higher genetic similarity. We also observed noticeable genetic structure among farmed populations, with most of them being genetically similar to L. Albert and L. Kyoga fish. Admixture results showed a higher (2.55-52.75%) contribution of L. Albert / L. Kyoga stocks to Uganda's farmed fish than the stock from L. Victoria (2.12-28.02%). We observed relatively high genetic diversity across both wild and farmed populations, but some farms had sizable numbers of highly inbred fish, raising concerns about management practices. In addition, we identified a genomic region on chromosome 5, harbouring the key innate immune gene BPI and the key growth gene GHRH, putatively under selection in the Ugandan Nile tilapia population. This region overlaps with the genomic region previously identified to be associated with growth rate in farmed Nile tilapia.
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Affiliation(s)
- Diego Robledo
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh EH25 9RG, UK
| | - Joel Ogwang
- National Animal Genetics Resources Centre and Data Bank (NAGRC&DB), P.O. Box 183, Nsamizi Road, Entebbe, Uganda
| | - Ezra Byakora
- National Animal Genetics Resources Centre and Data Bank (NAGRC&DB), P.O. Box 183, Nsamizi Road, Entebbe, Uganda
| | - Jennifer Nascimento Schulze
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh EH25 9RG, UK; Marine Evolutionary Ecology, GEOMAR Helmholtz Centre for Ocean Research Kiel, Düsternbrooker Weg 20, Kiel 24105, Germany
| | - Katali Kirungi Benda
- National Animal Genetics Resources Centre and Data Bank (NAGRC&DB), P.O. Box 183, Nsamizi Road, Entebbe, Uganda
| | - Clemence Fraslin
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh EH25 9RG, UK
| | - Sarah Salisbury
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh EH25 9RG, UK
| | - Moses Solimo
- National Animal Genetics Resources Centre and Data Bank (NAGRC&DB), P.O. Box 183, Nsamizi Road, Entebbe, Uganda
| | - Johnson Francis Mayega
- Department of Zoology, Entomology and Fisheries Sciences, College of Natural Sciences, Makerere University, P.O. Box, 7062, Kampala, Uganda
| | - Beine Peter
- National Animal Genetics Resources Centre and Data Bank (NAGRC&DB), P.O. Box 183, Nsamizi Road, Entebbe, Uganda
| | - Charles Masembe
- Department of Zoology, Entomology and Fisheries Sciences, College of Natural Sciences, Makerere University, P.O. Box, 7062, Kampala, Uganda
| | - Ross Houston
- Benchmark Genetics, 1 Pioneer Building, Edinburgh Technopole, Penicuik EH26 0GB, United Kingdom
| | - Robert Mukiibi
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh EH25 9RG, UK.
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5
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Chatterjee R, Chowdhury AR, Nair AV, Hajra D, Kar A, Datey A, Shankar S, Mishra RK, Chandra N, Chakravortty D. Salmonella Typhimurium PgtE is an essential arsenal to defend against the host resident antimicrobial peptides. Microbiol Res 2023; 271:127351. [PMID: 36931126 DOI: 10.1016/j.micres.2023.127351] [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: 11/04/2022] [Revised: 02/19/2023] [Accepted: 03/05/2023] [Indexed: 03/12/2023]
Abstract
Salmonella enterica serovar Typhimurium is a common cause of gastroenteritis in humans and occasionally causes systemic infection. Salmonella's ability to survive and replicate within macrophages is an important characteristic during systemic infection. The outer membrane protease PgtE of S. enterica is a member of the Omptin family of outer membrane aspartate proteases which has well-characterized proteolytic activities in-vitro against a wide range of physiologically relevant substrates. However, no study has been done so far that draws a direct correlation between these in-vitro observations and the biology of the pathogen in-vivo. The main goals of this study were to characterize the pathogenesis-associated functions of pgtE and study its role in the intracellular survival and in-vivo virulence of Salmonella Typhimurium. Our study elucidated a possible role of Salmonella Typhimurium pgtE in combating host antimicrobial peptide- bactericidal/ permeability increasing protein (BPI) to survive in human macrophages. The pgtE-deficient strain of Salmonella showed attenuated proliferation and enhanced colocalization with BPI in U937 and Thp1 cells. In the presence of polymixin B, the attenuated in-vitro survival of STM ΔpgtE suggested a role of PgtE against the antimicrobial peptides. In addition, our study revealed that compared to the wild type Salmonella, the pgtE mutant is replication-deficient in C57BL/6 mice. Further, we showed that PgtE interacts directly with several antimicrobial peptides (AMPs) in the host gut. This gives the pathogen a survival advantage and helps to mount a successful infection in the host.
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Affiliation(s)
- Ritika Chatterjee
- Department of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science, Bangalore, India
| | - Atish Roy Chowdhury
- Department of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science, Bangalore, India
| | - Abhilash Vijay Nair
- Department of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science, Bangalore, India
| | - Dipasree Hajra
- Department of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science, Bangalore, India
| | - Arpita Kar
- Department of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science, Bangalore, India
| | - Akshay Datey
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, India
| | - Santhosh Shankar
- Department of Biochemistry, Division of Biological Sciences, Indian Institute of Science, Bangalore, India
| | - Rishi Kumar Mishra
- Department of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science, Bangalore, India
| | - Nagasuma Chandra
- Department of Biochemistry, Division of Biological Sciences, Indian Institute of Science, Bangalore, India
| | - Dipshikha Chakravortty
- Department of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science, Bangalore, India; Adjunct Faculty, Indian Institute of Science Research and Education, Thiruvananthapuram, Kerala, India.
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6
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Ateya A, Al-Sharif M, Abdo M, Fericean L, Essa B. Individual Genomic Loci and mRNA Levels of Immune Biomarkers Associated with Pneumonia Susceptibility in Baladi Goats. Vet Sci 2023; 10:vetsci10030185. [PMID: 36977224 PMCID: PMC10051579 DOI: 10.3390/vetsci10030185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/20/2023] [Accepted: 02/24/2023] [Indexed: 03/05/2023] Open
Abstract
The effectiveness of breeding for inherent disease resistance in animals could be considerably increased by identifying the genes and mutations that cause diversity in disease resistance. One hundred and twenty adult female Baladi goats (sixty pneumonic and sixty apparently healthy) were used in this study. DNA and RNA were extracted from blood samples collected from the jugular vein of each goat. SLC11A1, CD-14, CCL2, TLR1, TLR7, TLR8, TLR9, β defensin, SP110, SPP1, BP1, A2M, ADORA3, CARD15, IRF3, and SCART1 SNPs that have been previously found to be associated with pneumonia resistance/susceptibility were identified via PCR-DNA sequencing. The pneumonic and healthy goats differed significantly, according to a Chi-square analysis of the discovered SNPs. The mRNA levels of the studied immune markers were noticeably greater in the pneumonic goats than in the healthy ones. The findings could support the significance of the use of immune gene expression profiles and nucleotide variations as biomarkers for the susceptibility/resistance to pneumonia and provide a practical management technique for Baladi goats. These results also suggest a potential strategy for lowering pneumonia in goats by employing genetic markers linked to an animal’s ability to fend off infection in selective breeding.
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Affiliation(s)
- Ahmed Ateya
- Department of Animal Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
- Correspondence: (A.A.); (L.F.)
| | - Mona Al-Sharif
- Department of Biology, College of Science, University of Jeddah, Jeddah 21589, Saudi Arabia
| | - Mohamed Abdo
- Department of Animal Histology and Anatomy, School of Veterinary Medicine, Badr University in Cairo (BUC), Cairo 11829, Egypt
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, University of Sadat City, Sadat City 32897, Egypt
| | - Liana Fericean
- Department of Biology and Plant Protection, Faculty of Agricultural Sciences, University of Life Sciences King Michael I, 300645 Timisoara, Romania
- Correspondence: (A.A.); (L.F.)
| | - Bothaina Essa
- Department of Animal Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, Egypt
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Ahmad HI, Khan FA, Khan MA, Imran S, Akhtar RW, Pandupuspitasari NS, Negara W, Chen J. Molecular Evolution of the Bactericidal/Permeability-Increasing Protein (BPIFA1) Regulating the Innate Immune Responses in Mammals. Genes (Basel) 2022; 14:genes14010015. [PMID: 36672756 PMCID: PMC9858190 DOI: 10.3390/genes14010015] [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: 10/21/2022] [Revised: 12/06/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022] Open
Abstract
Bactericidal/permeability-increasing protein, a primary factor of the innate immune system of mammals, participates in natural immune protection against invading bacteria. BPIFA1 actively contributes to host defense via multiple mechanisms, such as antibacterial, surfactant, airway surface liquid control, and immunomodulatory activities. However, the evolutionary history and selection forces on the BPIFA1 gene in mammals during adaptive evolution are poorly understood. This study examined the BPIFA1 gene of humans compared with that of other mammalian species to estimate the selective pressure derived by adaptive evolution. To assess whether or not positive selection occurred, we employed several different possibility tests (M1 vs. M2 and M7 vs. M8). The proportions of positively selected sites were significant, with a likelihood log value of 93.63 for the BPIFA1 protein. The Selecton server was used on the same dataset to reconfirm positive selection for specific sites by employing the Mechanistic-Empirical Combination model, thus providing additional evidence supporting the findings of positive selection. There was convincing evidence for positive selection signals in the BPIFA1 genes of mammalian species, which was more significant for selection signs and creating signals. We performed probability tests comparing various models based on dN/dS ratios to recognize specific codons under positive selection pressure. We identified positively selected sites in the LBP-BPI domain of BPIFA1 proteins in the mammalian genome, including a lipid-binding domain with a very high degree of selectivity for DPPC. BPIFA1 activates the upper airway's innate immune system in response to numerous genetic signals in the mammalian genome. These findings highlight evolutionary advancements in immunoregulatory effects that play a significant role in the antibacterial and antiviral defenses of mammalian species.
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Affiliation(s)
- Hafiz Ishfaq Ahmad
- Department of Animal Breeding and Genetics, Faculty of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
- Correspondence: (H.I.A.); (J.C.)
| | - Faheem Ahmed Khan
- Laboratory of Molecular Biology and Genomics, Faculty of Science and Technology, University of Central Punjab, Lahore 54000, Pakistan
- Research Center for Animal Husbandry, National Research and Innovation Agency, South Tangerang 15314, Indonesia
| | - Musarrat Abbas Khan
- Department of Animal Breeding and Genetics, Faculty of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Safdar Imran
- Department of Animal Breeding and Genetics, Faculty of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Rana Waseem Akhtar
- Department of Animal Breeding and Genetics, Faculty of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Nuruliarizki Shinta Pandupuspitasari
- Laboratory of Animal Nutrition and Feed Science, Animal Science Department, Faculty of Animal and Agricultural Sciences, Universitas Diponegoro, Semarang 50275, Indonesia
| | - Windu Negara
- Research Center for Animal Husbandry, National Research and Innovation Agency, South Tangerang 15314, Indonesia
| | - Jinping Chen
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
- Correspondence: (H.I.A.); (J.C.)
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8
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Pussinen PJ, Kopra E, Pietiäinen M, Lehto M, Zaric S, Paju S, Salminen A. Periodontitis and cardiometabolic disorders: The role of lipopolysaccharide and endotoxemia. Periodontol 2000 2022; 89:19-40. [PMID: 35244966 PMCID: PMC9314839 DOI: 10.1111/prd.12433] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Lipopolysaccharide is a virulence factor of gram-negative bacteria with a crucial importance to the bacterial surface integrity. From the host's perspective, lipopolysaccharide plays a role in both local and systemic inflammation, activates both innate and adaptive immunity, and can trigger inflammation either directly (as a microbe-associated molecular pattern) or indirectly (by inducing the generation of nonmicrobial, danger-associated molecular patterns). Translocation of lipopolysaccharide into the circulation causes endotoxemia, which is typically measured as the biological activity of lipopolysaccharide to induce coagulation of an aqueous extract of blood cells of the assay. Apparently healthy subjects have a low circulating lipopolysaccharide activity, since it is neutralized and cleared rapidly. However, chronic endotoxemia is involved in the pathogenesis of many inflammation-driven conditions, especially cardiometabolic disorders. These include atherosclerotic cardiovascular diseases, obesity, liver diseases, diabetes, and metabolic syndrome, where endotoxemia has been recognized as a risk factor. The main source of endotoxemia is thought to be the gut microbiota. However, the oral dysbiosis in periodontitis, which is typically enriched with gram-negative bacterial species, may also contribute to endotoxemia. As endotoxemia is associated with an increased risk of cardiometabolic disorders, lipopolysaccharide could be considered as a molecular link between periodontal microbiota and cardiometabolic diseases.
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Affiliation(s)
- Pirkko J Pussinen
- Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Elisa Kopra
- Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Milla Pietiäinen
- Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Markku Lehto
- Folkhälsan Institute of Genetics, Folkhälsan Research Center, Helsinki, Finland.,Abdominal Center, Nephrology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.,Clinical and Molecular Metabolism, Faculty of Medicine Research Programs, University of Helsinki, Helsinki, Finland
| | - Svetislav Zaric
- Faculty of Dentistry, Oral & Craniofacial Sciences, Kings College London, London, UK
| | - Susanna Paju
- Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Aino Salminen
- Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
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9
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Turki F, Ben Younes R, Sakly M, Ben Rhouma K, Martinez-Guitarte JL, Amara S. Effect of silver nanoparticles on gene transcription of land snail Helix aspersa. Sci Rep 2022; 12:2078. [PMID: 35136168 PMCID: PMC8826417 DOI: 10.1038/s41598-022-06090-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 01/24/2022] [Indexed: 11/09/2022] Open
Abstract
Silver nanoparticles (Ag-NPs) are extremely useful in a diverse range of consumer goods. However, their impact on the environment is still under research, especially regarding the mechanisms involved in their effect. Aiming to provide some insight, the present work analyzes the transcriptional activity of six genes (Hsp83, Hsp17.2, Hsp19.8, SOD Cu-Zn, Mn-SOD, and BPI) in the terrestrial snail Helix aspersa in the presence of different concentrations of Ag-NPs. The animals were exposed for seven days to Lactuca sativa soaked for one hour in different concentrations of Ag-NPs (20, 50, 100 mg/L). The results revealed that the highest concentration tested of Ag-NPs (100 mg/L) led to a statistically significant induction of the Hsp83 and BPI expression in the digestive gland compared to the control group. However, a trend to upregulation with no statistical significance was observed for all the genes in the digestive gland and the foot, while in the hemolymph, the trend was to downregulation. Ag-NPs affected the stress response and immunity under the tested conditions, although the impact was weak. It is necessary to explore longer exposure times to confirm that the effect can be maintained and impact on health. Our results highlight the usefulness of the terrestrial snail Helix aspersa as a bioindicator organism for silver nanoparticle pollution biomonitoring and, in particular, the use of molecular biomarkers of pollutant effect as candidates to be included in a multi-biomarker strategy.
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Affiliation(s)
- Faten Turki
- Laboratory of Integrative Physiology, Faculty of Sciences of Bizerte, University of Carthage, 7021, Jarzouna, Tunisia
| | - Ridha Ben Younes
- Research Unit of Immuno-Microbiology Environmental and Carcinogenesis, Sciences Faculty of Bizerte, University of Carthage, Bizerte, Tunisia
| | - Mohsen Sakly
- Laboratory of Integrative Physiology, Faculty of Sciences of Bizerte, University of Carthage, 7021, Jarzouna, Tunisia
| | - Khemais Ben Rhouma
- Laboratory of Integrative Physiology, Faculty of Sciences of Bizerte, University of Carthage, 7021, Jarzouna, Tunisia
| | - José-Luis Martinez-Guitarte
- Grupo de Biología y Toxicología Ambiental, Departamento de Física Matemática y de Fluidos, Facultad de Ciencias, UNED, c/ Paseo de la Senda del Rey 9, 28040, Madrid, Spain.
| | - Salem Amara
- Laboratory of Integrative Physiology, Faculty of Sciences of Bizerte, University of Carthage, 7021, Jarzouna, Tunisia
- Department of Natural and Applied Sciences in Afif, Faculty of Sciences and Humanities, Shaqra University, Afif, 11921, Saudi Arabia
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10
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Escobar‐Salom M, Torrens G, Jordana‐Lluch E, Oliver A, Juan C. Mammals' humoral immune proteins and peptides targeting the bacterial envelope: from natural protection to therapeutic applications against multidrug‐resistant
Gram
‐negatives. Biol Rev Camb Philos Soc 2022; 97:1005-1037. [PMID: 35043558 PMCID: PMC9304279 DOI: 10.1111/brv.12830] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 12/12/2021] [Accepted: 12/15/2021] [Indexed: 12/11/2022]
Abstract
Mammalian innate immunity employs several humoral ‘weapons’ that target the bacterial envelope. The threats posed by the multidrug‐resistant ‘ESKAPE’ Gram‐negative pathogens (Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter spp.) are forcing researchers to explore new therapeutic options, including the use of these immune elements. Here we review bacterial envelope‐targeting (peptidoglycan and/or membrane‐targeting) proteins/peptides of the mammalian immune system that are most likely to have therapeutic applications. Firstly we discuss their general features and protective activity against ESKAPE Gram‐negatives in the host. We then gather, integrate, and discuss recent research on experimental therapeutics harnessing their bactericidal power, based on their exogenous administration and also on the discovery of bacterial and/or host targets that improve the performance of this endogenous immunity, as a novel therapeutic concept. We identify weak points and knowledge gaps in current research in this field and suggest areas for future work to obtain successful envelope‐targeting therapeutic options to tackle the challenge of antimicrobial resistance.
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Affiliation(s)
- María Escobar‐Salom
- Department of Microbiology University Hospital Son Espases‐Health Research Institute of the Balearic Islands (IdISBa) Carretera de Valldemossa 79 Palma Balearic Islands 07010 Spain
| | - Gabriel Torrens
- Department of Microbiology University Hospital Son Espases‐Health Research Institute of the Balearic Islands (IdISBa) Carretera de Valldemossa 79 Palma Balearic Islands 07010 Spain
| | - Elena Jordana‐Lluch
- Department of Microbiology University Hospital Son Espases‐Health Research Institute of the Balearic Islands (IdISBa) Carretera de Valldemossa 79 Palma Balearic Islands 07010 Spain
| | - Antonio Oliver
- Department of Microbiology University Hospital Son Espases‐Health Research Institute of the Balearic Islands (IdISBa) Carretera de Valldemossa 79 Palma Balearic Islands 07010 Spain
| | - Carlos Juan
- Department of Microbiology University Hospital Son Espases‐Health Research Institute of the Balearic Islands (IdISBa) Carretera de Valldemossa 79 Palma Balearic Islands 07010 Spain
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11
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Kamilova AT, Azizova GK, Umarnazarova ZE, Abdullaeva DA, Geller SI. The Activity of Antimicrobial Peptides in Pediatric Celiac Disease. Front Pediatr 2022; 10:873793. [PMID: 35733815 PMCID: PMC9208658 DOI: 10.3389/fped.2022.873793] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 04/27/2022] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Celiac disease (CD) is an immune-mediated disorder of the gut in which innate and adaptive responses are involved. Antimicrobial peptides (AMPs) constitute an arsenal of innate immunity regulators of paramount importance in the gut. However, the role of AMPs in CD is unclear. AIMS To evaluate the levels of fecal β-defensin-2, fecal calprotectin (FC), and antibodies against bactericidal/permeability-increasing protein (BPI) in the serum of children with active CD and to compare them with those of healthy controls (HCs). METHODS We examined 76 children with recently diagnosed CD between the age of 2-10 years (average age: 6.1 ± 1.2 years) and 32 HC (average age: 6.2 ± 3.8 years) in this study. We evaluated the level of fecal β-defensin-2 and FC levels in coprofiltrates, and the level of anti-BPI antibodies in blood serum. Correlation relationships between the parameters were assessed according to Pearson correlation coefficient. RESULTS Fecal β-defensin-2 concentration was greater in the CD group than in HC group, amounting to 99.6 ± 15.5 ng/mL and 64.0 ± 2.4 ng/mL, respectively (p < 0.02). The level of FC in the CD children was 35.4 ± 8.1 μg/g, while that in the control group was 19.1 ± 1.1 μg/g, (p < 0.05), representing a slightly increase. The concentration of anti-BPI antibodies in the CD and HC groups was 35.9 ± 10.1 U/mL and 5.2 ± 3.2 U/mL, respectively (p < 0.002). There was a strong and direct correlation between fecal β-defensin-2 and FC (r = 0.69), as well as a direct but weak relationship between fecal β-defensin-2 and anti-BPI antibodies (r = 0.35). CONCLUSIONS Our data reinforce that fecal β-defensin-2 and anti-BPI antibodies are greatly increased in patients with active CD. These biomarkers may be components of epithelial innate immunity in the intestine, with each having a distinct functional role in intestinal6 mucosal defense.
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Affiliation(s)
- Altinoy T Kamilova
- Gastroenterology Department of Republican Specialized Scientific-Practical Medical Center of Pediatrics Ministry of Health of Republic of Uzbekistan, Tashkent, Uzbekistan
| | - Gulnoza K Azizova
- Gastroenterology Department of Republican Specialized Scientific-Practical Medical Center of Pediatrics Ministry of Health of Republic of Uzbekistan, Tashkent, Uzbekistan
| | - Zulkhumar E Umarnazarova
- Gastroenterology Department of Republican Specialized Scientific-Practical Medical Center of Pediatrics Ministry of Health of Republic of Uzbekistan, Tashkent, Uzbekistan
| | - Dilrabo A Abdullaeva
- Gastroenterology Department of Republican Specialized Scientific-Practical Medical Center of Pediatrics Ministry of Health of Republic of Uzbekistan, Tashkent, Uzbekistan
| | - Svetlana I Geller
- Gastroenterology Department of Republican Specialized Scientific-Practical Medical Center of Pediatrics Ministry of Health of Republic of Uzbekistan, Tashkent, Uzbekistan
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12
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Li J, Gao E, Xu C, Wang H, Wei Y. ER-Phagy and Microbial Infection. Front Cell Dev Biol 2021; 9:771353. [PMID: 34912806 PMCID: PMC8667338 DOI: 10.3389/fcell.2021.771353] [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: 09/06/2021] [Accepted: 11/09/2021] [Indexed: 11/13/2022] Open
Abstract
The endoplasmic reticulum (ER) is an essential organelle in cells that synthesizes, folds and modifies membrane and secretory proteins. It has a crucial role in cell survival and growth, thus requiring strict control of its quality and homeostasis. Autophagy of the ER fragments, termed ER-phagy or reticulophagy, is an essential mechanism responsible for ER quality control. It transports stress-damaged ER fragments as cargo into the lysosome for degradation to eliminate unfolded or misfolded protein aggregates and membrane lipids. ER-phagy can also function as a host defense mechanism when pathogens infect cells, and its deficiency facilitates viral infection. This review briefly describes the process and regulatory mechanisms of ER-phagy, and its function in host anti-microbial defense during infection.
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Affiliation(s)
- Jiahui Li
- Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, China.,Key Laboratory for Cell Homeostasis and Cancer Research of Guangdong Higher Education Institutes, Guangzhou, China
| | - Enfeng Gao
- Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, China.,Key Laboratory for Cell Homeostasis and Cancer Research of Guangdong Higher Education Institutes, Guangzhou, China
| | - Chenguang Xu
- Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, China.,Key Laboratory for Cell Homeostasis and Cancer Research of Guangdong Higher Education Institutes, Guangzhou, China
| | - Hongna Wang
- Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, China.,Key Laboratory for Cell Homeostasis and Cancer Research of Guangdong Higher Education Institutes, Guangzhou, China.,GMU-GIBH Joint School of Life Sciences, Guangzhou Medical University, Guangzhou, China
| | - Yongjie Wei
- Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, China.,Key Laboratory for Cell Homeostasis and Cancer Research of Guangdong Higher Education Institutes, Guangzhou, China.,State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, Guangzhou, China
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13
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Yu S, Li M, Li Z, Xu P, Yao Z, Qian S, Qian F, Gao D, Wang H. Positive correlations between plasma BPI level and MPO-DNA and S100A8/A9 in myocardial infarction. Platelets 2021; 33:603-611. [PMID: 34387532 DOI: 10.1080/09537104.2021.1962836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Bactericidal/permeability-increasing protein (BPI) exhibits a number of important characteristics. RNA-seq analysis revealed that the BPI expression was increased in platelets of (non)ST-elevated myocardial infarction (NSTEMI/STEMI) patients. Activated platelets can induce NETosis which may be accompanied by the release of myeloperoxidase-DNA (MPO-DNA) and S100A8/A9. This study investigated the plasma BPI levels in myocardial infarction patients and its correlation with MPO-DNA and S100A8/A9. This prospective study recruited 80 control individuals, as well as 63 NSTEMI and 59 STEMI patients who were admitted to the First Affiliated Hospital of Bengbu Medical College for coronary angiography (CAG) and/or percutaneous coronary intervention (PCI) between May 1, 2020 and August 31, 2020. Demographic and clinical characteristics, clinical indicators, hs-CRP, IL-1β, MPO-DNA (a circulated marker of NETs), circulating levels of S100A8/A9 and BPI were measured from each individual. The severity of coronary lesions was evaluated by the Gensini score, based on the results of the CAG. Pearson's or spearman's correlation was used to examine the correlation between BPI and the above-mentioned parameters, as well as the severity of coronary artery disease. Linear regression analysis was applied to identify the independent predictive factors of BPI. Received operating characteristic (ROC) curve analysis was used to evaluate the diagnostic efficacy of plasma BPI for MI. The plasma BPI levels increased by 8.76 times in the STEMI group and 5.38 times in the NSTEMI group compared to the control group. The plasma level of hs-CRP and IL-1β in both STEMI and NSTEMI groups were also significantly higher than the control group. In addition, the plasma levels of MPO-DNA and S100A8/A9 in the STEMI and NSTEMI groups were significantly higher than the control group. Plasma levels of BPI were positively correlated with IL-1β, hs-CRP, MPO-DNA and S100A8/A9. The correlation between BPI and the severity of coronary artery disease was also significant. The optimal cutoff value of plasma BPI was 35.1705 ng/ml for MI patients from the ROC curve analysis. Plasma BPI levels are increased in myocardial infarction patients and positively correlated with MPO-DNA and S100A8/A9. Plasma BPI level may serve as a potential biomarker of myocardial infarction.
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Affiliation(s)
- Shicheng Yu
- Anhui Provincial Hospital, Cheeloo College Of Medicine, Shandong University, Jinan, Shandong P.R. China.,Department Of Cardiology, Lu'an People's Hospital, Lu'an, Anhui P.R. China
| | - Miaonan Li
- Department Of Cardiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui P.R. China
| | - Zheng Li
- Department Of Cardiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui P.R. China
| | - Pan Xu
- Department Of Cardiology, Lu'an People's Hospital, Lu'an, Anhui P.R. China
| | - Zhuoya Yao
- Department Of Cardiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui P.R. China
| | - Shaohuan Qian
- Department Of Cardiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui P.R. China
| | - Fudong Qian
- Department Of Cardiology, Lu'an People's Hospital, Lu'an, Anhui P.R. China
| | - Dasheng Gao
- Department Of Cardiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui P.R. China
| | - Hongju Wang
- Anhui Provincial Hospital, Cheeloo College Of Medicine, Shandong University, Jinan, Shandong P.R. China.,Department Of Cardiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui P.R. China
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14
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Jung HJ, Sorbara MT, Pamer EG. TAM mediates adaptation of carbapenem-resistant Klebsiella pneumoniae to antimicrobial stress during host colonization and infection. PLoS Pathog 2021; 17:e1009309. [PMID: 33556154 PMCID: PMC7895364 DOI: 10.1371/journal.ppat.1009309] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 02/19/2021] [Accepted: 01/12/2021] [Indexed: 01/12/2023] Open
Abstract
Gram-negative pathogens, such as Klebsiella pneumoniae, remodel their outer membrane (OM) in response to stress to maintain its integrity as an effective barrier and thus to promote their survival in the host. The emergence of carbapenem-resistant K. pneumoniae (CR-Kp) strains that are resistant to virtually all antibiotics is an increasing clinical problem and OM impermeability has limited development of antimicrobial agents because higher molecular weight antibiotics cannot access sites of activity. Here, we demonstrate that TAM (translocation and assembly module) deletion increases CR-Kp OM permeability under stress conditions and enhances sensitivity to high-molecular weight antimicrobials. SILAC-based proteomic analyses revealed mis-localization of membrane proteins in the TAM deficient strain. Stress-induced sensitization enhances clearance of TAM-deficient CR-Kp from the gut lumen following fecal microbiota transplantation and from infection sites following pulmonary or systemic infection. Our study suggests that TAM, as a regulator of OM permeability, represents a potential target for development of agents that enhance the effectiveness of existing antibiotics.
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Affiliation(s)
- Hea-Jin Jung
- Duchossois Family Institute, The University of Chicago, Chicago, Illinois, United States of America
- Department of Microbiology, The University of Chicago, Chicago, Illinois, United States of America
- Department of Medicine, Section of Infectious Diseases and Global Health, The University of Chicago, Chicago, Illinois, United States of America
- * E-mail: (H-JJ); (EGP)
| | - Matthew T. Sorbara
- Duchossois Family Institute, The University of Chicago, Chicago, Illinois, United States of America
- Department of Microbiology, The University of Chicago, Chicago, Illinois, United States of America
- Department of Medicine, Section of Infectious Diseases and Global Health, The University of Chicago, Chicago, Illinois, United States of America
| | - Eric G. Pamer
- Duchossois Family Institute, The University of Chicago, Chicago, Illinois, United States of America
- Department of Microbiology, The University of Chicago, Chicago, Illinois, United States of America
- Department of Medicine, Section of Infectious Diseases and Global Health, The University of Chicago, Chicago, Illinois, United States of America
- * E-mail: (H-JJ); (EGP)
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15
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The Yersinia pestis GTPase BipA Promotes Pathogenesis of Primary Pneumonic Plague. Infect Immun 2021; 89:IAI.00673-20. [PMID: 33257531 PMCID: PMC7822129 DOI: 10.1128/iai.00673-20] [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] [Received: 10/23/2020] [Accepted: 11/11/2020] [Indexed: 12/27/2022] Open
Abstract
Yersinia pestis is a highly virulent pathogen and the causative agent of bubonic, septicemic, and pneumonic plague. Primary pneumonic plague caused by inhalation of respiratory droplets contaminated with Y. pestis is nearly 100% lethal within 4 to 7 days without antibiotic intervention. Pneumonic plague progresses in two phases, beginning with extensive bacterial replication in the lung with minimal host responsiveness, followed by the abrupt onset of a lethal proinflammatory response. The precise mechanisms by which Y. pestis is able to colonize the lung and survive two very distinct disease phases remain largely unknown. To date, a few bacterial virulence factors, including the Ysc type 3 secretion system, are known to contribute to the pathogenesis of primary pneumonic plague. The bacterial GTPase BipA has been shown to regulate expression of virulence factors in a number of Gram-negative bacteria, including Pseudomonas aeruginosa, Escherichia coli, and Salmonella enterica serovar Typhi. However, the role of BipA in Y. pestis has yet to be investigated. Here, we show that BipA is a Y. pestis virulence factor that promotes defense against early neutrophil-mediated bacterial killing in the lung. This work identifies a novel Y. pestis virulence factor and highlights the importance of early bacterial/neutrophil interactions in the lung during primary pneumonic plague.
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16
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Duodenal expression of antimicrobial peptides in dogs with idiopathic inflammatory bowel disease and intestinal lymphoma. Vet J 2019; 249:47-52. [PMID: 31239164 DOI: 10.1016/j.tvjl.2019.05.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 05/17/2019] [Accepted: 05/17/2019] [Indexed: 12/27/2022]
Abstract
Although antimicrobial peptides (AMPs) play an integral role in the regulation of intestinal microbiota and homeostasis, their expression in canine gastrointestinal diseases, including idiopathic inflammatory bowel disease (IBD) and intestinal lymphoma, remains unknown. The objective of this study was to investigate the intestinal expression of AMPs in dogs with IBD or intestinal lymphoma. IBD was diagnosed in 44 dogs, small cell intestinal lymphoma in 25 dogs, and large cell intestinal lymphoma in 19 dogs. Twenty healthy beagles were used as normal controls. Duodenal mRNA expression of six representative AMPs - lactoferrin, lysozyme, cathelicidin, secretory leukocyte peptidase inhibitor (SLPI), bactericidal/permeability increasing protein (BPI), and canine beta defensin (CBD103) - was quantified by real-time reverse transcription polymerase chain reaction. The relative expression of BPI, lactoferrin, and SLPI was significantly higher in dogs with IBD and intestinal lymphomas than in healthy controls. Interestingly, the expression patterns of AMPs differed between dogs with IBD and those with intestinal lymphomas, especially small cell lymphoma. Increased expression of BPI differentiated IBD from dogs with small cell intestinal lymphoma, with a sensitivity of 93.2%, a specificity of 100%, and an area under the curve of 0.955. These results suggest that the expression patterns of AMP aid in the diagnosis of canine IBD and intestinal lymphoma, although it remains uncertain whether the altered AMP expression is the cause or effect of mucosal inflammation.
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17
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Honore PM, De Bels D, Spapen HD. BPI fold-containing family a member 2 as a biomarker of acute kidney injury-close but no (clinical) cigar? ANNALS OF TRANSLATIONAL MEDICINE 2018; 6:191. [PMID: 29951513 PMCID: PMC5994521 DOI: 10.21037/atm.2018.03.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 03/07/2018] [Indexed: 08/30/2023]
Affiliation(s)
- Patrick M. Honore
- Department of Intensive Care, Centre Hospitalier Universitaire Brugmann, Brussels, Belgium
| | - David De Bels
- Department of Intensive Care, Centre Hospitalier Universitaire Brugmann, Brussels, Belgium
| | - Herbert D. Spapen
- Department of Intensive Care Unit, Universitair Ziekenhuis Brussel, VUB University, Brussels, Belgium
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18
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Balakrishnan A, Chakravortty D. Epithelial Cell Damage Activates Bactericidal/Permeability Increasing-Protein (BPI) Expression in Intestinal Epithelium. Front Microbiol 2017; 8:1567. [PMID: 28861073 PMCID: PMC5559428 DOI: 10.3389/fmicb.2017.01567] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 08/02/2017] [Indexed: 12/18/2022] Open
Abstract
As the first line of defense against invading pathogen, intestinal epithelium produces various antimicrobial proteins (AMP) that help in clearance of pathogen. Bactericidal/permeability-increasing protein (BPI) is a 55 kDa AMP that is expressed in intestinal epithelium. Dysregulation of BPI in intestinal epithelium is associated with various inflammatory diseases like Crohn's Disease, Ulcerative colitis, and Infectious enteritis's. In this paper, we report a direct correlation between intestinal damage and BPI expression. In Caco-2 cells, we see a significant increase in BPI levels upon membrane damage mediated by S. aureus infection and pore-forming toxins (Streptolysin and Listeriolysin). Cells detect changes in potassium level as a Danger-associated molecular pattern associated with cell damage and induce BPI expression in a p38 dependent manner. These results are further supported by in vivo findings that the BPI expression in murine intestinal epithelium is induced upon infection with bacteria which cause intestinal damage (Salmonella Typhimurium and Shigella flexneri) whereas mutants that do not cause intestinal damage (STM ΔfliC and STM ΔinvC) did not induce BPI expression. Our results suggest that epithelial damage associated with infection act as a signal to induce BPI expression.
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Affiliation(s)
- Arjun Balakrishnan
- Department of Microbiology and Cell Biology, Indian Institute of ScienceBangalore, India
| | - Dipshikha Chakravortty
- Department of Microbiology and Cell Biology, Indian Institute of ScienceBangalore, India.,Centre for Biosystems Science and Engineering, Indian Institute of ScienceBangalore, India
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19
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Liu M, Li H, Xue CX, Gu L, Qu JX, Yu XM, Wang YM, Liu YM, Cao B. Differences in inflammatory marker patterns for adult community-acquired pneumonia patients induced by different pathogens. CLINICAL RESPIRATORY JOURNAL 2017; 12:974-985. [PMID: 28139879 DOI: 10.1111/crj.12614] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 01/17/2017] [Indexed: 12/01/2022]
Abstract
INTRODUCTION The inflammatory marker patterns of community-acquired Pneumonia (CAP) induced by different microorganisms in adult patients remained unclear. OBJECTIVES We aim to explore the inflammatory marker patterns of adult CAP patients induced by different pathogens. METHODS Adult CAP patients with definite etiologies were enrolled from September 2010 to June 2012. They were divided into three groups according to the causative pathogens: typical bacteria, Mycoplasma pneumoniae (MP), and viruses. Twenty-seven cytokines and bactericidal/permeability-increasing protein (BPI) levels of serum collected within 7 days onset in these groups were compared. RESULTS One hundred twenty-four cases were enrolled for serum detection and analysis, including 10 typical bacterial pneumonia patients, 56 cases with MP pneumonia and 58 with viral pneumonia. Three kinds (PDGF-BB, IP-10, RANTES) of 27 cytokines and BPI levels were significantly elevated in patients with acute pneumonia than healthy controls. Distinct inflammatory marker patterns were released by different pathogens: typical bacterial pneumonia patients had highest levels of BPI, IL-6, IL-8, IL-1rα; while patients caused by MP presented higher levels of PDGF-BB, IL-17A, G-CSF than those caused by viruses. Rhinovirus owned a higher inflammatory response level than the other viruses. The area under the curve (AUC) of PDGF-BB to differentiate MP and virus infection was biggest, which was 0.708. CONCLUSION Distinct inflammatory marker patterns were released by different pathogens during acute pneumonia. Significantly increased level of PDGF-BB was observed in acute pneumonia for the first time. It showed a better ability to differentiate MP and virus infection.
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Affiliation(s)
- Meng Liu
- Department of Infectious diseases and Clinical Microbiology, Beijing Chao-Yang Hospital, Beijing Institute of Respiratory Medicine, Beijing, 100020, China.,Beijing Hospital of Traditional Chinese Medicine affiliated to Capital Medical University, Beijing, 100010, China
| | - Hui Li
- Department of Respiratory Medicine, Capital Medical University, Beijing, 100069, China
| | - Chun Xue Xue
- Department of Respiratory Medicine, Capital Medical University, Beijing, 100069, China
| | - Li Gu
- Department of Infectious diseases and Clinical Microbiology, Beijing Chao-Yang Hospital, Beijing Institute of Respiratory Medicine, Beijing, 100020, China
| | - Jiu Xin Qu
- Department of Infectious diseases and Clinical Microbiology, Beijing Chao-Yang Hospital, Beijing Institute of Respiratory Medicine, Beijing, 100020, China
| | - Xiao Min Yu
- Department of Infectious diseases and Clinical Microbiology, Beijing Chao-Yang Hospital, Beijing Institute of Respiratory Medicine, Beijing, 100020, China
| | - Yi Min Wang
- National Clinical Research Centre of Respiratory Diseases, Center for Respiratory Diseases, China - Japan Friendship Hospital; Department of Pulmonary and Critical Care Medicine, China - Japan Friendship Hospital, Beijing, 100029, China
| | - Ying Mei Liu
- National Clinical Research Centre of Respiratory Diseases, Center for Respiratory Diseases, China - Japan Friendship Hospital; Department of Pulmonary and Critical Care Medicine, China - Japan Friendship Hospital, Beijing, 100029, China
| | - Bin Cao
- Department of Respiratory Medicine, Capital Medical University, Beijing, 100069, China.,National Clinical Research Centre of Respiratory Diseases, Center for Respiratory Diseases, China - Japan Friendship Hospital; Department of Pulmonary and Critical Care Medicine, China - Japan Friendship Hospital, Beijing, 100029, China
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20
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Wang H, Wu J, Wu S, Wu S, Bao W. DNA methylation differences of the BPI promoter among pig breeds and the regulation of gene expression. RSC Adv 2017. [DOI: 10.1039/c7ra05549h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
TheBPIpromoter methylation is distinct between different pig breeds and potentially associated with its expression and disease susceptibility.
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Affiliation(s)
- HaiFei Wang
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province
- College of Animal Science and Technology
- Yangzhou University
- Yangzhou 225009
- China
| | - Jiayun Wu
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province
- College of Animal Science and Technology
- Yangzhou University
- Yangzhou 225009
- China
| | - Sen Wu
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province
- College of Animal Science and Technology
- Yangzhou University
- Yangzhou 225009
- China
| | - ShengLong Wu
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province
- College of Animal Science and Technology
- Yangzhou University
- Yangzhou 225009
- China
| | - WenBin Bao
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province
- College of Animal Science and Technology
- Yangzhou University
- Yangzhou 225009
- China
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21
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Balakrishnan A, Schnare M, Chakravortty D. Of Men Not Mice: Bactericidal/Permeability-Increasing Protein Expressed in Human Macrophages Acts as a Phagocytic Receptor and Modulates Entry and Replication of Gram-Negative Bacteria. Front Immunol 2016; 7:455. [PMID: 27822215 PMCID: PMC5075746 DOI: 10.3389/fimmu.2016.00455] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 10/11/2016] [Indexed: 12/31/2022] Open
Abstract
Macrophages as immune cells prevent the spreading of pathogens by means of active phagocytosis and killing. We report here the presence of an antimicrobial protein, bactericidal/permeability-increasing protein (BPI) in human macrophages, which actively participates in engulfment and killing of Gram-negative pathogens. Our studies revealed increased expression of BPI in human macrophages during bacterial infection and upon stimulation with various pathogen-associated molecular patterns, viz., LPS and flagellin. Furthermore, during the course of an infection, BPI interacted with Gram-negative bacteria, resulting in enhanced phagocytosis and subsequent control of the bacterial replication. However, it was observed that bacteria which can maintain an active replicating niche (Salmonella Typhimurium) avoid the interaction with BPI during later stages of infection. On the other hand, Salmonella mutants, which cannot maintain a replicating niche, as well as Shigella flexneri, which quit the endosomal vesicle, showed interaction with BPI. These results propose an active role of BPI in Gram-negative bacterial clearance by human macrophages.
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Affiliation(s)
- Arjun Balakrishnan
- Department of Microbiology and Cell Biology, Indian Institute of Science , Bangalore , India
| | - Markus Schnare
- Institute for Immunology, University of Marburg , Marburg , Germany
| | - Dipshikha Chakravortty
- Centre for Biosystems Science and Engineering, Indian Institute of Science , Bangalore , India
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Lv Z, Fan Y, Xu Q, Kong Q, Li C, Liu Z, Wang W, An Y. Long-term anti-endotoxin/E. coli efficacy in mice transfected with AAV2/1-muBPI25 -muFcγ1. APMIS 2016; 124:888-95. [PMID: 27501062 DOI: 10.1111/apm.12582] [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: 03/15/2016] [Accepted: 06/19/2016] [Indexed: 11/28/2022]
Abstract
Bactericidal/permeability increasing (BPI) is an antibiotic protein which kills Gram-negative bacteria and neutralizes endotoxin. We have previously developed a recombinant adeno-associated virus which contains human BPI amino acid residues 1-199 and Fc fragment of human IgG1 gene (AAV-hBPI-Fc) and shown that the recombinant virus can protect mice from lethal endotoxemia. However, whether AAV-hBPI-Fc can be used in vivo for the long term remains unclear. To address this, we established an adeno-associated virus-containing mouse BPI and Fc fragment genes (muBPI-Fc) and compared antigenicity of these recombinant proteins in murine models. Immunohistochemistry showed the expression of both fusion proteins at injected sites. ELISA and Western blotting showed that the muBPI-Fc protein was detected in serum up to 8 weeks after injection, without generation of autoantibodies against muBPI-Fc. In contrast, expressed hBPI-Fc protein was only detected on the 2nd week, whereas the autoantibody against hBPI-Fc protein occurred in serum from the 4th week to the end of study. muBPI-Fc also reduced production of proinflammatory cytokines and protected mice from endotoxemia and bacteremia. Our data showed that AAV-muBPI-Fc has potential long-term efficacy as an anti-endotoxin and has anti-bacterial activity in mice, suggesting the potential clinical application of AAV-hBPI-Fc, such as in endotoxin shock.
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Affiliation(s)
- Zhe Lv
- The Department of Immunology and The Research Centre of Microbiome, Capital Medical University, Beijing, China
| | - Yiqiang Fan
- The Department of Immunology and The Research Centre of Microbiome, Capital Medical University, Beijing, China
| | - Qing Xu
- The Department of Immunology and The Research Centre of Microbiome, Capital Medical University, Beijing, China
| | - Qingli Kong
- The Department of Immunology and The Research Centre of Microbiome, Capital Medical University, Beijing, China
| | - Chen Li
- The Department of Immunology and The Research Centre of Microbiome, Capital Medical University, Beijing, China
| | - Zhenlong Liu
- The Department of Immunology and The Research Centre of Microbiome, Capital Medical University, Beijing, China
| | - Wei Wang
- The Department of Immunology and The Research Centre of Microbiome, Capital Medical University, Beijing, China.
| | - Yunqing An
- The Department of Immunology and The Research Centre of Microbiome, Capital Medical University, Beijing, China
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Xu F, Jerlström-Hultqvist J, Kolisko M, Simpson AGB, Roger AJ, Svärd SG, Andersson JO. On the reversibility of parasitism: adaptation to a free-living lifestyle via gene acquisitions in the diplomonad Trepomonas sp. PC1. BMC Biol 2016; 14:62. [PMID: 27480115 PMCID: PMC4967989 DOI: 10.1186/s12915-016-0284-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 07/13/2016] [Indexed: 01/08/2023] Open
Abstract
Background It is generally thought that the evolutionary transition to parasitism is irreversible because it is associated with the loss of functions needed for a free-living lifestyle. Nevertheless, free-living taxa are sometimes nested within parasite clades in phylogenetic trees, which could indicate that they are secondarily free-living. Herein, we test this hypothesis by studying the genomic basis for evolutionary transitions between lifestyles in diplomonads, a group of anaerobic eukaryotes. Most described diplomonads are intestinal parasites or commensals of various animals, but there are also free-living diplomonads found in oxygen-poor environments such as marine and freshwater sediments. All these nest well within groups of parasitic diplomonads in phylogenetic trees, suggesting that they could be secondarily free-living. Results We present a transcriptome study of Trepomonas sp. PC1, a diplomonad isolated from marine sediment. Analysis of the metabolic genes revealed a number of proteins involved in degradation of the bacterial membrane and cell wall, as well as an extended set of enzymes involved in carbohydrate degradation and nucleotide metabolism. Phylogenetic analyses showed that most of the differences in metabolic capacity between free-living Trepomonas and the parasitic diplomonads are due to recent acquisitions of bacterial genes via gene transfer. Interestingly, one of the acquired genes encodes a ribonucleotide reductase, which frees Trepomonas from the need to scavenge deoxyribonucleosides. The transcriptome included a gene encoding squalene-tetrahymanol cyclase. This enzyme synthesizes the sterol substitute tetrahymanol in the absence of oxygen, potentially allowing Trepomonas to thrive under anaerobic conditions as a free-living bacterivore, without depending on sterols from other eukaryotes. Conclusions Our findings are consistent with the phylogenetic evidence that the last common ancestor of diplomonads was dependent on a host and that Trepomonas has adapted secondarily to a free-living lifestyle. We believe that similar studies of other groups where free-living taxa are nested within parasites could reveal more examples of secondarily free-living eukaryotes. Electronic supplementary material The online version of this article (doi:10.1186/s12915-016-0284-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Feifei Xu
- Department of Cell and Molecular Biology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Jon Jerlström-Hultqvist
- Department of Cell and Molecular Biology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden.,Present address: Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Martin Kolisko
- Department of Biology, Dalhousie University, Halifax, NS, Canada.,Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, NS, Canada.,Present address: Botany Department, University of British Columbia, Vancouver, BC, Canada
| | - Alastair G B Simpson
- Department of Biology, Dalhousie University, Halifax, NS, Canada.,Canadian Institute for Advanced Research, Integrated Microbial Biodiversity Program, Toronto, ON, Canada
| | - Andrew J Roger
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, NS, Canada.,Canadian Institute for Advanced Research, Integrated Microbial Biodiversity Program, Toronto, ON, Canada
| | - Staffan G Svärd
- Department of Cell and Molecular Biology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Jan O Andersson
- Department of Cell and Molecular Biology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden.
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24
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Sun L, Wang J, Yin X, Sun S, Zi C, Zhu G, Wu S, Bao W. Identification of a 5-Methylcytosine Site that may Regulate C/EBPβ Binding and Determine Tissue-Specific Expression of the BPI Gene in Piglets. Sci Rep 2016; 6:28506. [PMID: 27338589 PMCID: PMC4919782 DOI: 10.1038/srep28506] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 06/03/2016] [Indexed: 01/19/2023] Open
Abstract
Bactericidal/permeability-increasing protein (BPI) plays an important role in innate immune defense in mammals. A previous study showed that BPI gene expression correlates to gram-negative bacteria resistance. However, this gene showed tissue-specific expression in piglets and strongly expressed only in the digestive tract. To investigate the mechanisms governing the tissue-specificity, bisulfite sequencing PCR and next generation sequencing were used for high accuracy methylation quantitation of CpG islands of BPI gene upstream in 11 different tissues from weaned Yorkshire piglets. Additionally, qPCR was used to examine mRNA levels of BPI gene as well as transcription factor. We additionally analyzed transcriptional regulation by studying key 5-methylcytosine sites and transcription factors. Results showed that BPI mRNA levels significantly correlated with the overall methylation as well as methylation at mC-15 which was non-CpG site, no significant correlation could be found between the BPI and transcription factor mRNA levels, EMSA test showed that C/EBPβ could interact with BPI wild-type promoter DNA, but not methylated DNA. So we confirmed that methylation of mC-15 residue could inhibit the ability of C/EBPβ binding to the BPI promoter and affect the expression, and this mechanism probably plays a role in the tissue specificity of BPI gene expression in weaned piglets.
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Affiliation(s)
- Li Sun
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, P. R. China
| | - Jing Wang
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, P. R. China
| | - Xuemei Yin
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, P. R. China
| | - Shouyong Sun
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, P. R. China
| | - Chen Zi
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, P. R. China
| | - Guoqiang Zhu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, P. R. China
| | - Shenglong Wu
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, P. R. China
| | - Wenbin Bao
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, P. R. China
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25
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Ertl NG, O’Connor WA, Papanicolaou A, Wiegand AN, Elizur A. Transcriptome Analysis of the Sydney Rock Oyster, Saccostrea glomerata: Insights into Molluscan Immunity. PLoS One 2016; 11:e0156649. [PMID: 27258386 PMCID: PMC4892480 DOI: 10.1371/journal.pone.0156649] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Accepted: 05/17/2016] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Oysters have important ecological functions in their natural environment, acting as global carbon sinks and improving water quality by removing excess nutrients from the water column. During their life-time oysters are exposed to a variety of pathogens that can cause severe mortality in a range of oyster species. Environmental stressors encountered in their habitat can increase the susceptibility of oysters to these pathogens and in general have been shown to impact on oyster immunity, making immune parameters expressed in these marine animals an important research topic. RESULTS Paired-end Illumina high throughput sequencing of six S. glomerata tissues exposed to different environmental stressors resulted in a total of 484,121,702 paired-end reads. When reads and assembled transcripts were compared to the C. gigas genome, an overall low level of similarity at the nucleotide level, but a relatively high similarity at the protein level was observed. Examination of the tissue expression pattern showed that some transcripts coding for cathepsins, heat shock proteins and antioxidant proteins were exclusively expressed in the haemolymph of S. glomerata, suggesting a role in innate immunity. Furthermore, analysis of the S. glomerata ORFs showed a wide range of genes potentially involved in innate immunity, from pattern recognition receptors, components of the Toll-like signalling and apoptosis pathways to a complex antioxidant defence mechanism. CONCLUSIONS This is the first large scale RNA-Seq study carried out in S. glomerata, showing the complex network of innate immune components that exist in this species. The results confirmed that many of the innate immune system components observed in mammals are also conserved in oysters; however, some, such as the TLR adaptors MAL, TRIF and TRAM are either missing or have been modified significantly. The components identified in this study could help explain the oysters' natural resilience against pathogenic microorganisms encountered in their natural environment.
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Affiliation(s)
- Nicole G. Ertl
- University of the Sunshine Coast, Sippy Downs, Queensland, Australia
- Australian Seafood Cooperative Research Centre, Bedford Park, South Australia, Australia
| | - Wayne A. O’Connor
- University of the Sunshine Coast, Sippy Downs, Queensland, Australia
- Department of Primary Industries, Taylors Beach, New South Wales, Australia
| | - Alexie Papanicolaou
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Ecosystem Sciences, Black Mountain Laboratories, Canberra, Australian Capital Territory, Australia
| | - Aaron N. Wiegand
- University of the Sunshine Coast, Sippy Downs, Queensland, Australia
| | - Abigail Elizur
- University of the Sunshine Coast, Sippy Downs, Queensland, Australia
- * E-mail:
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26
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Kell D, Potgieter M, Pretorius E. Individuality, phenotypic differentiation, dormancy and 'persistence' in culturable bacterial systems: commonalities shared by environmental, laboratory, and clinical microbiology. F1000Res 2015; 4:179. [PMID: 26629334 PMCID: PMC4642849 DOI: 10.12688/f1000research.6709.2] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/04/2015] [Indexed: 01/28/2023] Open
Abstract
For bacteria, replication mainly involves growth by binary fission. However, in a very great many natural environments there are examples of phenotypically dormant, non-growing cells that do not replicate immediately and that are phenotypically 'nonculturable' on media that normally admit their growth. They thereby evade detection by conventional culture-based methods. Such dormant cells may also be observed in laboratory cultures and in clinical microbiology. They are usually more tolerant to stresses such as antibiotics, and in clinical microbiology they are typically referred to as 'persisters'. Bacterial cultures necessarily share a great deal of relatedness, and inclusive fitness theory implies that there are conceptual evolutionary advantages in trading a variation in growth rate against its mean, equivalent to hedging one's bets. There is much evidence that bacteria exploit this strategy widely. We here bring together data that show the commonality of these phenomena across environmental, laboratory and clinical microbiology. Considerable evidence, using methods similar to those common in environmental microbiology, now suggests that many supposedly non-communicable, chronic and inflammatory diseases are exacerbated (if not indeed largely caused) by the presence of dormant or persistent bacteria (the ability of whose components to cause inflammation is well known). This dormancy (and resuscitation therefrom) often reflects the extent of the availability of free iron. Together, these phenomena can provide a ready explanation for the continuing inflammation common to such chronic diseases and its correlation with iron dysregulation. This implies that measures designed to assess and to inhibit or remove such organisms (or their access to iron) might be of much therapeutic benefit.
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Affiliation(s)
- Douglas Kell
- School of Chemistry and The Manchester Institute of Biotechnology, The University of Manchester, Manchester, Lancashire, M1 7DN, UK
| | - Marnie Potgieter
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Arcadia, 0007, South Africa
| | - Etheresia Pretorius
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Arcadia, 0007, South Africa
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27
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Kell D, Potgieter M, Pretorius E. Individuality, phenotypic differentiation, dormancy and 'persistence' in culturable bacterial systems: commonalities shared by environmental, laboratory, and clinical microbiology. F1000Res 2015; 4:179. [PMID: 26629334 DOI: 10.12688/f1000research.6709.1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/29/2015] [Indexed: 01/28/2023] Open
Abstract
For bacteria, replication mainly involves growth by binary fission. However, in a very great many natural environments there are examples of phenotypically dormant, non-growing cells that do not replicate immediately and that are phenotypically 'nonculturable' on media that normally admit their growth. They thereby evade detection by conventional culture-based methods. Such dormant cells may also be observed in laboratory cultures and in clinical microbiology. They are usually more tolerant to stresses such as antibiotics, and in clinical microbiology they are typically referred to as 'persisters'. Bacterial cultures necessarily share a great deal of relatedness, and inclusive fitness theory implies that there are conceptual evolutionary advantages in trading a variation in growth rate against its mean, equivalent to hedging one's bets. There is much evidence that bacteria exploit this strategy widely. We here bring together data that show the commonality of these phenomena across environmental, laboratory and clinical microbiology. Considerable evidence, using methods similar to those common in environmental microbiology, now suggests that many supposedly non-communicable, chronic and inflammatory diseases are exacerbated (if not indeed largely caused) by the presence of dormant or persistent bacteria (the ability of whose components to cause inflammation is well known). This dormancy (and resuscitation therefrom) often reflects the extent of the availability of free iron. Together, these phenomena can provide a ready explanation for the continuing inflammation common to such chronic diseases and its correlation with iron dysregulation. This implies that measures designed to assess and to inhibit or remove such organisms (or their access to iron) might be of much therapeutic benefit.
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Affiliation(s)
- Douglas Kell
- School of Chemistry and The Manchester Institute of Biotechnology, The University of Manchester, Manchester, Lancashire, M1 7DN, UK
| | - Marnie Potgieter
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Arcadia, 0007, South Africa
| | - Etheresia Pretorius
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Arcadia, 0007, South Africa
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28
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Potgieter M, Bester J, Kell DB, Pretorius E. The dormant blood microbiome in chronic, inflammatory diseases. FEMS Microbiol Rev 2015; 39:567-91. [PMID: 25940667 PMCID: PMC4487407 DOI: 10.1093/femsre/fuv013] [Citation(s) in RCA: 274] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/02/2015] [Indexed: 02/07/2023] Open
Abstract
Blood in healthy organisms is seen as a ‘sterile’ environment: it lacks proliferating microbes. Dormant or not-immediately-culturable forms are not absent, however, as intracellular dormancy is well established. We highlight here that a great many pathogens can survive in blood and inside erythrocytes. ‘Non-culturability’, reflected by discrepancies between plate counts and total counts, is commonplace in environmental microbiology. It is overcome by improved culturing methods, and we asked how common this would be in blood. A number of recent, sequence-based and ultramicroscopic studies have uncovered an authentic blood microbiome in a number of non-communicable diseases. The chief origin of these microbes is the gut microbiome (especially when it shifts composition to a pathogenic state, known as ‘dysbiosis’). Another source is microbes translocated from the oral cavity. ‘Dysbiosis’ is also used to describe translocation of cells into blood or other tissues. To avoid ambiguity, we here use the term ‘atopobiosis’ for microbes that appear in places other than their normal location. Atopobiosis may contribute to the dynamics of a variety of inflammatory diseases. Overall, it seems that many more chronic, non-communicable, inflammatory diseases may have a microbial component than are presently considered, and may be treatable using bactericidal antibiotics or vaccines. Atopobiosis of microbes (the term describing microbes that appear in places other than where they should be), as well as the products of their metabolism, seems to correlate with, and may contribute to, the dynamics of a variety of inflammatory diseases.
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Affiliation(s)
- Marnie Potgieter
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Arcadia 0007, South Africa
| | - Janette Bester
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Arcadia 0007, South Africa
| | - Douglas B Kell
- School of Chemistry and The Manchester Institute of Biotechnology, The University of Manchester, 131, Princess St, Manchester M1 7DN, Lancs, UK
| | - Etheresia Pretorius
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Arcadia 0007, South Africa
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29
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Jacquier V, Estellé J, Schmaltz-Panneau B, Lecardonnel J, Moroldo M, Lemonnier G, Turner-Maier J, Duranthon V, Oswald IP, Gidenne T, Rogel-Gaillard C. Genome-wide immunity studies in the rabbit: transcriptome variations in peripheral blood mononuclear cells after in vitro stimulation by LPS or PMA-Ionomycin. BMC Genomics 2015; 16:26. [PMID: 25613284 PMCID: PMC4326531 DOI: 10.1186/s12864-015-1218-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Accepted: 01/02/2015] [Indexed: 12/13/2022] Open
Abstract
Background Our purpose was to obtain genome-wide expression data for the rabbit species on the responses of peripheral blood mononuclear cells (PBMCs) after in vitro stimulation by lipopolysaccharide (LPS) or phorbol myristate acetate (PMA) and ionomycin. This transcriptome profiling was carried out using microarrays enriched with immunity-related genes, and annotated with the most recent data available for the rabbit genome. Results The LPS affected 15 to 20 times fewer genes than PMA-Ionomycin after both 4 hours (T4) and 24 hours (T24), of in vitro stimulation, in comparison with mock-stimulated PBMCs. LPS induced an inflammatory response as shown by a significant up-regulation of IL12A and CXCL11 at T4, followed by an increased transcription of IL6, IL1B, IL1A, IL36, IL37, TNF, and CCL4 at T24. Surprisingly, we could not find an up-regulation of IL8 either at T4 or at T24, and detected a down-regulation of DEFB1 and BPI at T24. A concerted up-regulation of SAA1, S100A12 and F3 was found upon stimulation by LPS. PMA-Ionomycin induced a very early expression of Th1, Th2, Treg, and Th17 responses by PBMCs at T4. The Th1 response increased at T24 as shown by the increase of the transcription of IFNG and by contrast to other cytokines which significantly decreased from T4 to T24 (IL2, IL4, IL10, IL13, IL17A, CD69) by comparison to mock-stimulation. The granulocyte-macrophage colony-stimulating factor (CSF2) was by far the most over-expressed gene at both T4 and T24 by comparison to mock-stimulated cells, confirming a major impact of PMA-Ionomycin on cell growth and proliferation. A significant down-regulation of IL16 was observed at T4 and T24, in agreement with a role of IL16 in PBMC apoptosis. Conclusions We report new data on the responses of PBMCs to LPS and PMA-Ionomycin in the rabbit species, thus enlarging the set of mammalian species for which such reports exist. The availability of the rabbit genome assembly together with high throughput genomic tools should pave the way for more intense genomic studies for this species, which is known to be a very relevant biomedical model in immunology and physiology. Electronic supplementary material The online version of this article (doi:10.1186/s12864-015-1218-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Vincent Jacquier
- INRA, UMR 1313 Génétique Animale et Biologie Intégrative, Domaine de Vilvert, F-78350, Jouy-en-Josas, France. .,AgroParisTech, UMR 1313 Génétique Animale et Biologie Intégrative, Domaine de Vilvert, F-78350, Jouy-en-Josas, France. .,INRA, GenPhySE (Génétique, Physiologie et Systèmes d'Elevage), F-31326, Castanet-Tolosan, France. .,Université de Toulouse, INP, ENSAT, GenPhySE (Génétique, Physiologie et Systèmes d'Elevage), F-31326, Castanet-Tolosan, France. .,Université de Toulouse, INP, ENVT, GenPhySE (Génétique, Physiologie et Systèmes d'Elevage), F-31076, Toulouse, France.
| | - Jordi Estellé
- INRA, UMR 1313 Génétique Animale et Biologie Intégrative, Domaine de Vilvert, F-78350, Jouy-en-Josas, France. .,AgroParisTech, UMR 1313 Génétique Animale et Biologie Intégrative, Domaine de Vilvert, F-78350, Jouy-en-Josas, France.
| | - Barbara Schmaltz-Panneau
- INRA, UMR1198 Biologie du Développement et Reproduction, Domaine de Vilvert, F-78350, Jouy-en-Josas, France.
| | - Jérôme Lecardonnel
- INRA, UMR 1313 Génétique Animale et Biologie Intégrative, Domaine de Vilvert, F-78350, Jouy-en-Josas, France. .,AgroParisTech, UMR 1313 Génétique Animale et Biologie Intégrative, Domaine de Vilvert, F-78350, Jouy-en-Josas, France.
| | - Marco Moroldo
- INRA, UMR 1313 Génétique Animale et Biologie Intégrative, Domaine de Vilvert, F-78350, Jouy-en-Josas, France. .,AgroParisTech, UMR 1313 Génétique Animale et Biologie Intégrative, Domaine de Vilvert, F-78350, Jouy-en-Josas, France.
| | - Gaëtan Lemonnier
- INRA, UMR 1313 Génétique Animale et Biologie Intégrative, Domaine de Vilvert, F-78350, Jouy-en-Josas, France. .,AgroParisTech, UMR 1313 Génétique Animale et Biologie Intégrative, Domaine de Vilvert, F-78350, Jouy-en-Josas, France.
| | | | - Véronique Duranthon
- INRA, UMR1198 Biologie du Développement et Reproduction, Domaine de Vilvert, F-78350, Jouy-en-Josas, France.
| | - Isabelle P Oswald
- INRA, UMR1331, Toxalim, Research Center in Food Toxicology, 180 chemin de Tournefeuille, BP 93173, F-31027, Toulouse, France. .,Université de Toulouse, INP, UMR1331, Toxalim, Research Center in Food Toxicology, F-31000, Toulouse, France.
| | - Thierry Gidenne
- INRA, GenPhySE (Génétique, Physiologie et Systèmes d'Elevage), F-31326, Castanet-Tolosan, France. .,Université de Toulouse, INP, ENSAT, GenPhySE (Génétique, Physiologie et Systèmes d'Elevage), F-31326, Castanet-Tolosan, France. .,Université de Toulouse, INP, ENVT, GenPhySE (Génétique, Physiologie et Systèmes d'Elevage), F-31076, Toulouse, France.
| | - Claire Rogel-Gaillard
- INRA, UMR 1313 Génétique Animale et Biologie Intégrative, Domaine de Vilvert, F-78350, Jouy-en-Josas, France. .,AgroParisTech, UMR 1313 Génétique Animale et Biologie Intégrative, Domaine de Vilvert, F-78350, Jouy-en-Josas, France.
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30
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Pettengill MA, van Haren SD, Levy O. Soluble mediators regulating immunity in early life. Front Immunol 2014; 5:457. [PMID: 25309541 PMCID: PMC4173950 DOI: 10.3389/fimmu.2014.00457] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 09/08/2014] [Indexed: 12/15/2022] Open
Abstract
Soluble factors in blood plasma have a substantial impact on both the innate and adaptive immune responses. The complement system, antibodies, and anti-microbial proteins and peptides can directly interact with potential pathogens, protecting against systemic infection. Levels of these innate effector proteins are generally lower in neonatal circulation at term delivery than in adults, and lower still at preterm delivery. The extracellular environment also has a critical influence on immune cell maturation, activation, and effector functions, and many of the factors in plasma, including hormones, vitamins, and purines, have been shown to influence these processes for leukocytes of both the innate and adaptive immune systems. The ontogeny of plasma factors can be viewed in the context of a lower effectiveness of immune responses to infection and immunization in early life, which may be influenced by the striking neonatal deficiency of complement system proteins or enhanced neonatal production of the anti-inflammatory cytokine IL-10, among other ontogenic differences. Accordingly, we survey here a number of soluble mediators in plasma for which age-dependent differences in abundance may influence the ontogeny of immune function, particularly direct innate interaction and skewing of adaptive lymphocyte activity in response to infectious microorganisms and adjuvanted vaccines.
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Affiliation(s)
- Matthew Aaron Pettengill
- Department of Medicine, Division of Infectious Diseases, Boston Children's Hospital , Boston, MA , USA ; Harvard Medical School , Boston, MA , USA
| | - Simon Daniël van Haren
- Department of Medicine, Division of Infectious Diseases, Boston Children's Hospital , Boston, MA , USA ; Harvard Medical School , Boston, MA , USA
| | - Ofer Levy
- Department of Medicine, Division of Infectious Diseases, Boston Children's Hospital , Boston, MA , USA ; Harvard Medical School , Boston, MA , USA
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31
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Ning F, Wang C, Berry KZ, Kandasamy P, Liu H, Murphy RC, Voelker DR, Nho CW, Pan CH, Dai S, Niu L, Chu HW, Zhang G. Structural characterization of the pulmonary innate immune protein SPLUNC1 and identification of lipid ligands. FASEB J 2014; 28:5349-60. [PMID: 25223608 DOI: 10.1096/fj.14-259291] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The short palate, lung and nasal epithelial clone 1 (SPLUNC1) protein is a member of the palate, lung, and nasal epithelium clone (PLUNC) family, also known as bactericidal/permeability-increasing (BPI) fold-containing protein, family A, member 1 (BPIFA1). SPLUNC1 is an abundant protein in human airways, but its function remains poorly understood. The lipid ligands of SPLUNC1 as well as other PLUNC family members are largely unknown, although some reports provide evidence that lipopolysaccharide (LPS) could be a lipid ligand. Unlike previous hypotheses, we found significant structural differences between SPLUNC1 and BPI. Recombinant SPLUNC1 produced in HEK 293 cells harbored several molecular species of sphingomyelin and phosphatidylcholine as its ligands. Significantly, in vitro lipid-binding studies failed to demonstrate interactions between SPLUNC1 and LPS, lipoteichoic acid, or polymyxin B. Instead, one of the major and most important pulmonary surfactant phospholipids, dipalmitoylphosphatidylcholine (DPPC), bound to SPLUNC1 with high affinity and specificity. We found that SPLUNC1 could be the first protein receptor for DPPC. These discoveries provide insight into the specific determinants governing the interaction between SPLUNC1 and lipids and also shed light on novel functions that SPLUNC1 and other PLUNC family members perform in host defense.
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Affiliation(s)
- Fangkun Ning
- School of Life Sciences, University of Science and Technology of China, Hefei, China; Integrated Department of Immunology, National Jewish Health and University of Colorado Denver, Denver, Colorado, USA
| | - Chao Wang
- Integrated Department of Immunology, National Jewish Health and University of Colorado Denver, Denver, Colorado, USA
| | - Karin Zemski Berry
- Department of Pharmacology, University of Colorado Denver, Aurora, Colorado, USA
| | | | - Haolin Liu
- Integrated Department of Immunology, National Jewish Health and University of Colorado Denver, Denver, Colorado, USA
| | - Robert C Murphy
- Department of Pharmacology, University of Colorado Denver, Aurora, Colorado, USA
| | - Dennis R Voelker
- Department of Medicine, National Jewish Health, Denver, Colorado, USA; and
| | - Chu Won Nho
- Functional Food Center, Korea Institute of Science and Technology, GangNeung, Korea
| | - Choel-Ho Pan
- Functional Food Center, Korea Institute of Science and Technology, GangNeung, Korea
| | - Shaodong Dai
- Integrated Department of Immunology, National Jewish Health and University of Colorado Denver, Denver, Colorado, USA
| | - Liwen Niu
- School of Life Sciences, University of Science and Technology of China, Hefei, China;
| | - Hong-Wei Chu
- Integrated Department of Immunology, National Jewish Health and University of Colorado Denver, Denver, Colorado, USA; Department of Medicine, National Jewish Health, Denver, Colorado, USA; and
| | - Gongyi Zhang
- Integrated Department of Immunology, National Jewish Health and University of Colorado Denver, Denver, Colorado, USA
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Wang J, Yin X, Sun L, Sun S, Zi C, Zhu G, Wu S, Bao W. Correlation between BPI gene upstream CpG island methylation and mRNA expression in piglets. Int J Mol Sci 2014; 15:10989-98. [PMID: 24945309 PMCID: PMC4100193 DOI: 10.3390/ijms150610989] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 05/28/2014] [Accepted: 06/09/2014] [Indexed: 01/15/2023] Open
Abstract
Diarrhea and edematous disease are two major causes of mortality in postweaning piglets, and these conditions lead to huge economic losses in the swine industry. E. coli F18 is the primary causative agent of these two diseases. Bactericidal/permeability-increasing protein (BPI) plays an important role in the natural defense of the host. The aim of this study was to determine the correlation between BPI gene upstream CpG island methylation and mRNA expression. In this study, bisulfite sequencing PCR (BSP) was used to detect the methylation status of the BPI gene upstream CpG island and fluorescence quantitative PCR was used to detect BPI expression in the duodenum of piglets from birth to weaning age. BPI upstream CpG islands were shown to have many putative transcription factor binding sites, 10 CpG sites and every CpG site was methylated. The CpG island methylation level was lowest in 30-day piglets and was significantly lower than levels in 8-day piglets (p < 0.05). BPI mRNA expression was significantly higher in 30-day piglets than at any other age (p < 0.05). Pearson’s correlation analysis showed that the methylation status of the CpG island was negatively correlated with BPI mRNA expression. Statistical significances were found in CpG_1, CpG_3, CpG_4, CpG_7 and CpG_10 (p < 0.05). The data indicate that BPI expression is improved by demethylation of the BPI gene upstream CpG island. Furthermore, CpG_1, CpG_3, CpG_4, CpG_7 and CpG_10 may be critical sites in the regulation of BPI gene expression.
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Affiliation(s)
- Jing Wang
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China.
| | - Xuemei Yin
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China.
| | - Li Sun
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China.
| | - Shouyong Sun
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China.
| | - Chen Zi
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China.
| | - Guoqiang Zhu
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China.
| | - Shenglong Wu
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China.
| | - Wenbin Bao
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China.
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Evaluation of correlation of cell cycle proteins and Ki-67 interaction in paranasal sinus inverted papilloma prognosis and squamous cell carcinoma transformation. BIOMED RESEARCH INTERNATIONAL 2014; 2014:634945. [PMID: 25013792 PMCID: PMC4075189 DOI: 10.1155/2014/634945] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Revised: 03/05/2014] [Accepted: 03/05/2014] [Indexed: 12/12/2022]
Abstract
The recurrent sinonasal inverted papilloma (IP) could be transformed to sinonasal squamous cell carcinoma. We use protein expression patterns by immunohistochemical method to see whether the expression of p53, p16, p21, and p27 belongs to cell-cycle-regulators and PCNA (proliferating cell nuclear antigen) and Ki-67 the proliferation markers in sixty patients with sinonasal inverted papilloma, and 10 of them with squamous cell carcinoma transformation. Significantly elevated levels of Ki-67, p27, and PCNA in IP with squamous cell carcinoma transformation of sinonasal tract compared with inverted papilloma were revealed. No variation of p16, p21, PLUNC (palate, lung, and nasal epithelium clone protein) and p53 expression was correlated to sinonasal IP malignant transformation by multivariate survey. However, we found elevated PLUNC expression in IPs with multiple recurrences. Finally, we found that PCNA, p27 may interact with CDK1 which promote IP cell proliferation and correlate to sinonasal squamous cell carcinoma. Ki-67 could work throughout the cell cycles to cause malignant transformation. In conclusion, this is a first study showing the correlation of Ki-67, PCNA interacted with CDK1 might lead to malignant transformation. Elevated PLUNC expression in the sinonasal IPs was related to multiple recurrences in human.
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Lu XJ, Chu CQ, Chen Q, Chen J. A novel lipopolysaccharide-binding protein (LBP) gene from sweetfish Plecoglossus altivelis: molecular characterization and its role in the immune response of monocytes/macrophages. FISH & SHELLFISH IMMUNOLOGY 2014; 38:111-118. [PMID: 24594008 DOI: 10.1016/j.fsi.2014.02.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2013] [Revised: 02/14/2014] [Accepted: 02/23/2014] [Indexed: 06/03/2023]
Abstract
Lipopolysaccharide-binding protein (LBP) belongs to the lipid transfer/LBP (LT-LBP) family, and plays a crucial role in the recognition of bacterial components that modulate cellular signals in phagocytic cells. Although several LBPs have been identified in teleosts, the effects of LBP homologs on teleost phagocytic cells are still obscure. Here, we report the cloning a novel full-length cDNA sequence of LBP-like protein (paLBP) gene from sweetfish, Plecoglossus altivelis. The paLBP cDNA encoded a 464 aa polypeptide, which was closest to that of rainbow smelt (Osmerus mordax). paLBP mRNA was detected mainly in the spleen, liver, and head kidney and levels dramatically increased in various tissues after Listonella anguillarum infection. In contrast to mammalian studies, paLBP mRNA could also be detected in sweetfish monocytes/macrophages. Recombinant paLBP showed LPS-binding activity and Western blot results revealed a significant increase of paLBP in the supernatant of sweetfish monocytes/macrophages challenged with L. anguillarum. Moreover, paLBP neutralization led to up-regulation of IL-1β and TNF-α mRNA as well as respiratory burst activity in sweetfish monocytes/macrophages in response to L. anguillarum or LPS challenge. Therefore, these results suggest that paLBP is an inducible acute-phase protein mediating the immune response of sweetfish monocytes/macrophages upon bacterial challenge.
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Affiliation(s)
- Xin-Jiang Lu
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Chang-Qing Chu
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Qiang Chen
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Jiong Chen
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China.
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Kim JM. Antimicrobial proteins in intestine and inflammatory bowel diseases. Intest Res 2014; 12:20-33. [PMID: 25349560 PMCID: PMC4204685 DOI: 10.5217/ir.2014.12.1.20] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 10/29/2013] [Accepted: 10/30/2013] [Indexed: 12/21/2022] Open
Abstract
Mucosal surface of the intestinal tract is continuously exposed to a large number of microorganisms. To manage the substantial microbial exposure, epithelial surfaces produce a diverse arsenal of antimicrobial proteins (AMPs) that directly kill or inhibit the growth of microorganisms. Thus, AMPs are important components of innate immunity in the gut mucosa. They are frequently expressed in response to colonic inflammation and infection. Expression of many AMPs, including human β-defensin 2-4 and cathelicidin, is induced in response to invasion of pathogens or enteric microbiota into the mucosal barrier. In contrast, some AMPs, including human α-defensin 5-6 and human β-defensin 1, are constitutively expressed without microbial contact or invasion. In addition, specific AMPs are reported to be associated with inflammatory bowel disease (IBD) due to altered expression of AMPs or development of autoantibodies against AMPs. The advanced knowledge for AMPs expression in IBD can lead to its potential use as biomarkers for disease activity. Although the administration of exogenous AMPs as therapeutic strategies against IBD is still at an early stage of development, augmented induction of endogenous AMPs may be another interesting future research direction for the protective and therapeutic purposes. This review discusses new advances in our understanding of how intestinal AMPs protect against pathogens and contribute to pathophysiology of IBD.
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Affiliation(s)
- Jung Mogg Kim
- Department of Microbiology, Hanyang University College of Medicine, Seoul, Korea
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36
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Baron OL, van West P, Industri B, Ponchet M, Dubreuil G, Gourbal B, Reichhart JM, Coustau C. Parental transfer of the antimicrobial protein LBP/BPI protects Biomphalaria glabrata eggs against oomycete infections. PLoS Pathog 2013; 9:e1003792. [PMID: 24367257 PMCID: PMC3868517 DOI: 10.1371/journal.ppat.1003792] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Accepted: 10/11/2013] [Indexed: 12/20/2022] Open
Abstract
Vertebrate females transfer antibodies via the placenta, colostrum and milk or via the egg yolk to protect their immunologically immature offspring against pathogens. This evolutionarily important transfer of immunity is poorly documented in invertebrates and basic questions remain regarding the nature and extent of parental protection of offspring. In this study, we show that a lipopolysaccharide binding protein/bactericidal permeability increasing protein family member from the invertebrate Biomphalaria glabrata (BgLBP/BPI1) is massively loaded into the eggs of this freshwater snail. Native and recombinant proteins displayed conserved LPS-binding, antibacterial and membrane permeabilizing activities. A broad screening of various pathogens revealed a previously unknown biocidal activity of the protein against pathogenic water molds (oomycetes), which is conserved in human BPI. RNAi-dependent silencing of LBP/BPI in the parent snails resulted in a significant reduction of reproductive success and extensive death of eggs through oomycete infections. This work provides the first functional evidence that a LBP/BPI is involved in the parental immune protection of invertebrate offspring and reveals a novel and conserved biocidal activity for LBP/BPI family members. Vertebrate immune systems not only protect adult organisms against infections but also increase survival of offspring through parental transfer of innate and adaptive immune factors via the placenta, colostrum and milk or via the egg yolk. This maternal transfer of immunity is critical for species survival as embryos and neonates are immunologically immature and unable to fight off infections at early life stages. Parental immune protection is poorly documented in invertebrates and how the estimated 1.3 million of invertebrate species protect their eggs against pathogens remains an intriguing question. Here, we show that a fresh-water snail, Biomphalaria glabrata massively loads its eggs with a lipopolysaccharide binding protein/bactericidal permeability increasing protein (LBP/BPI) displaying expected antibacterial activities. Remarkably, this snail LBP/BPI also displayed a strong biocidal activity against water molds (oomycetes). This yet unsuspected activity is conserved in human BPI. Gene expression knock-down resulted in the reduction of snail reproductive success and massive death of eggs after water mold infections. This work reveals a novel and conserved biocidal activity for LBP/BPI family members and demonstrates that the snail LBP/BPI represents a major fitness-related protein transferred from parents to their clutches and protecting them from widespread and lethal oomycete infections.
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Affiliation(s)
- Olga Lucia Baron
- Sophia Agrobiotech Institute, INRA-CNRS-UNS, Sophia Antipolis, France
- Institut de Biologie Moléculaire et Cellulaire, UPR9022 CNRS, Strasbourg, France
| | - Pieter van West
- Aberdeen Oomycete Laboratory, University of Aberdeen, Institute of Medical Sciences, Foresterhill, Aberdeen, United Kingdom
| | - Benoit Industri
- Sophia Agrobiotech Institute, INRA-CNRS-UNS, Sophia Antipolis, France
| | - Michel Ponchet
- Sophia Agrobiotech Institute, INRA-CNRS-UNS, Sophia Antipolis, France
| | | | - Benjamin Gourbal
- Ecologie et Evolution des Interactions, UMR 5244 CNRS, Université de Perpignan Via Domitia, Perpignan, France
| | - Jean-Marc Reichhart
- Institut de Biologie Moléculaire et Cellulaire, UPR9022 CNRS, Strasbourg, France
- * E-mail: (JMR); (CC)
| | - Christine Coustau
- Sophia Agrobiotech Institute, INRA-CNRS-UNS, Sophia Antipolis, France
- * E-mail: (JMR); (CC)
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