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Li K, Feng KC, Simon M, Fu Y, Galanakis D, Mueller S, Rafailovich MH. Molecular Basis for Surface-Initiated Non-Thrombin-Generated Clot Formation Following Viral Infection. ACS APPLIED MATERIALS & INTERFACES 2024; 16:30703-30714. [PMID: 38848451 DOI: 10.1021/acsami.4c02918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2024]
Abstract
In this paper, we propose a model that connects two standard inflammatory responses to viral infection, namely, elevation of fibrinogen and the lipid drop shower, to the initiation of non-thrombin-generated clot formation. In order to understand the molecular basis for the formation of non-thrombin-generated clots following viral infection, human epithelial and Madin-Darby Canine Kidney (MDCK, epithelial) cells were infected with H1N1, OC43, and adenovirus, and conditioned media was collected, which was later used to treat human umbilical vein endothelial cells and human lung microvascular endothelial cells. After direct infection or after exposure to conditioned media from infected cells, tissue surfaces of both epithelial and endothelial cells, exposed to 8 mg/mL fibrinogen, were observed to initiate fibrillogenesis in the absence of thrombin. No fibers were observed after direct viral exposure of the endothelium or when the epithelium cells were exposed to SARS-CoV-2 isolated spike proteins. Heating the conditioned media to 60 °C had no effect on fibrillogenesis, indicating that the effect was not enzymatic but rather associated with relatively thermally stable inflammatory factors released soon after viral infection. Spontaneous fibrillogenesis had previously been reported and interpreted as being due to the release of the alpha C domains due to strong interactions of the interior of the fibrinogen molecule in contact with hydrophobic material surfaces rather than cleavage of the fibrinopeptides. Contact angle goniometry and immunohistochemistry were used to demonstrate that the lipids produced within the epithelium and released in the conditioned media, probably after the death of infected epithelial cells, formed a hydrophobic residue responsible for fibrillogenesis. Hence, the standard inflammatory response constitutes the ideal conditions for surface-initiated clot formation.
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Affiliation(s)
- Kao Li
- School of Biomedicine and Nursing, Shandong Institute of Petroleum and Chemical Technology, Dongying 257061, Shandong, China
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
| | - Kuan-Che Feng
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
| | - Marcia Simon
- Department of Oral Biology and Pathology, Stony Brook University Medical Center, Stony Brook, New York 11794, United States
| | - Yuyang Fu
- Dongying Stem Cell Bank Medical Technology Co., Ltd., Dongying 257000, Shandong, China
| | - Dennis Galanakis
- Department of Pathology, Stony Brook University School of Medicine, Stony Brook, New York 11720, United States
| | | | - Miriam H Rafailovich
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
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Boddu VK, Zamzow P, Kramer MW, Merseburger AS, Gorantla SP, Klinger M, Cramer L, Sauer T, Gemoll T, von Bubnoff N, Gieseler F, Darabi M. Targeting cancer-derived extracellular vesicles by combining CD147 inhibition with tissue factor pathway inhibitor for the management of urothelial cancer cells. Cell Commun Signal 2024; 22:129. [PMID: 38360687 PMCID: PMC10870545 DOI: 10.1186/s12964-024-01508-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 01/31/2024] [Indexed: 02/17/2024] Open
Abstract
BACKGROUND Extracellular vesicles (EVs), including microvesicles, hold promise for the management of bladder urothelial carcinoma (BLCA), particularly because of their utility in identifying therapeutic targets and their diagnostic potential using easily accessible urine samples. Among the transmembrane glycoproteins highly enriched in cancer-derived EVs, tissue factor (TF) and CD147 have been implicated in promoting tumor progression. In this in vitro study, we explored a novel approach to impede cancer cell migration and metastasis by simultaneously targeting these molecules on urothelial cancer-derived EVs. METHODS Cell culture supernatants from invasive and non-invasive bladder cancer cell lines and urine samples from patients with BLCA were collected. Large, microvesicle-like EVs were isolated using sequential centrifugation and characterized by electron microscopy, nanoparticle tracking analysis, and flow cytometry. The impact of urinary or cell supernatant-derived EVs on cellular phenotypes was evaluated using cell-based assays following combined treatment with a specific CD147 inhibitor alone or in combination with a tissue factor pathway inhibitor (TFPI), an endogenous anticoagulant protein that can be released by low-molecular-weight heparins. RESULTS We observed that EVs obtained from the urine samples of patients with muscle-invasive BLCA and from the aggressive bladder cancer cell line J82 exhibited higher TF activity and CD147 expression levels than did their non-invasive counterparts. The shedding of GFP-tagged CD147 into isolated vesicles demonstrated that the vesicles originated from plasma cell membranes. EVs originating from invasive cancer cells were found to trigger migration, secretion of matrix metalloproteinases (MMPs), and invasion. The same induction of MMP activity was replicated using EVs obtained from urine samples of patients with invasive BLCA. EVs derived from cancer cell clones overexpressing TF and CD147 were produced in higher quantities and exhibited a higher invasive potential than those from control cancer cells. TFPI interfered with the effect when used in conjunction with the CD147 inhibitor, further suppressing homotypic EV-induced migration, MMP production, and invasion. CONCLUSIONS Our findings suggest that combining a CD147 inhibitor with low molecular weight heparins to induce TFPI release may be a promising therapeutic approach for urothelial cancer management. This combination can potentially suppress the tumor-promoting actions of cancer-derived microvesicle-like EVs, including collective matrix invasion.
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Affiliation(s)
- Vijay Kumar Boddu
- Department of Hematology and Oncology, Section for Experimental Oncology, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Piet Zamzow
- Department of Hematology and Oncology, Section for Experimental Oncology, University Hospital Schleswig-Holstein, Lübeck, Germany
| | | | - Axel S Merseburger
- Department of Urology, University Hospital Schleswig-Holstein, Lübeck, Germany
| | | | | | - Lena Cramer
- Department of Hematology and Oncology, Section for Experimental Oncology, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Thorben Sauer
- Department of Surgery, Section for Translational Surgical Oncology and Biobanking, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Timo Gemoll
- Department of Surgery, Section for Translational Surgical Oncology and Biobanking, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Nikolas von Bubnoff
- Department of Urology, University Hospital Schleswig-Holstein, Lübeck, Germany
- University Cancer Center Schleswig-Holstein (UCCSH), Lübeck, Germany
| | - Frank Gieseler
- Department of Hematology and Oncology, Section for Experimental Oncology, University Hospital Schleswig-Holstein, Lübeck, Germany
- University Cancer Center Schleswig-Holstein (UCCSH), Lübeck, Germany
| | - Masoud Darabi
- Department of Hematology and Oncology, Section for Experimental Oncology, University Hospital Schleswig-Holstein, Lübeck, Germany.
- University Cancer Center Schleswig-Holstein (UCCSH), Lübeck, Germany.
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Patra T, Ray R. Bystander effect of SARS-CoV-2 spike protein on human monocytic THP-1 cell activation and initiation of prothrombogenic stimulus representing severe COVID-19. J Inflamm (Lond) 2022; 19:28. [PMID: 36585712 PMCID: PMC9801152 DOI: 10.1186/s12950-022-00325-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 12/16/2022] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Hypercoagulable state and thromboembolic complications are potential life-threatening events in COVID-19 patients. Our previous studies demonstrated that SARS-CoV-2 infection as well as viral spike protein expressed epithelial cells exhibit senescence with the release of inflammatory molecules, including alarmins. FINDINGS We observed extracellular alarmins present in the culture media of SARS-CoV-2 spike expressing cells activate human THP-1 monocytes to secrete pro-inflammatory cytokines to a significant level. The release of THP-1 derived pro-inflammatory cytokine signature correlated with the serum of acute COVID-19 patient, but not in post-COVID-19 state. Our study suggested that the alarmins secreted by spike expressing cells, initiated phagocytosis property of THP-1 cells. The phagocytic monocytes secreted complement component C5a and generated an autocrine signal via C5aR1 receptor. The C5a-C5aR1 signal induced formation of monocyte mediated extracellular trap resulted in the generation of a prothrombogenic stimulus with activating platelets and increased tissue factor activity. We also observed an enhanced C5a level, platelet activating factor, and high tissue factor activity in the serum of acute COVID-19 patients, but not in recovered patients. CONCLUSION Our present study demonstrated that SARS-CoV-2 spike protein modulates monocyte responses in a paracrine manner for prothrombogenic stimulus by the generation of C5a complement component.
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Affiliation(s)
- Tapas Patra
- Departments of Internal Medicine, Division of Infectious Diseases, Allergy & Immunology, Edward A. Doisy Research Center, 1100 South Grand Blvd, MO 63104 Saint Louis, USA
| | - Ranjit Ray
- Departments of Internal Medicine, Division of Infectious Diseases, Allergy & Immunology, Edward A. Doisy Research Center, 1100 South Grand Blvd, MO 63104 Saint Louis, USA ,grid.262962.b0000 0004 1936 9342Molecular Microbiology & Immunology, Saint Louis University, 63104 Saint Louis, Missouri, MO USA
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Steiner SE, Edgren G, Melican K, Richter-Dahlfors A, Brauner A. Effect of anticoagulant and platelet inhibition on the risk of bacteremia among patients with acute pyelonephritis: a retrospective cohort study. BMC Infect Dis 2022; 22:509. [PMID: 35641940 PMCID: PMC9158213 DOI: 10.1186/s12879-022-07474-4] [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: 02/02/2022] [Accepted: 05/16/2022] [Indexed: 11/21/2022] Open
Abstract
Background An increasing number of patients are being prescribed anticoagulants and platelet inhibitors (antithrombotic treatment). Basic research has suggested an association between antithrombotic treatment and bacteremia during kidney infection. Here, we investigated the association between antithrombotic treatment, bacteremia and acute kidney injury in patients with acute pyelonephritis. Methods A retrospective cohort study was conducted in a large university hospital in Sweden. Data were retrieved from electronic medical records for adult patients with acute pyelonephritis in 2016. The main outcome was bacteremia and secondary outcome acute kidney injury. Odds ratios (ORs) with 95% confidence intervals (CIs) were estimated through multiple logistic regression. Treatment with different groups of antithrombotic agents were compared to no antithrombotic treatment. Results 1814 patients with acute pyelonephritis were included, in whom bacteremia developed in 336 (18.5%). Low-molecular-weight heparin (LMWH) at prophylactic doses was associated with a lower risk of bacteremia, compared to no antithrombotic treatment (OR 0.5; 95% CI 0.3–0.7). Other antithrombotic treatments were not associated with a risk of bacteremia. Additionally, patients with prophylactic doses of LMWH had a lower risk of acute kidney injury (OR 0.5; 95% CI 0.3–0.8). Conclusions We found no association between antithrombotic treatment and an increased risk of bacteremia during acute pyelonephritis. Conversely, patients with prophylactic doses of LMWH had a slightly reduced risk of bacteremia. LMWH at prophylactic doses was also associated with a lower risk of acute kidney injury. Our results suggest that it is safe to continue antithrombotic treatment during acute pyelonephritis, in regards to bacteremia and acute kidney injury risk. Supplementary Information The online version contains supplementary material available at 10.1186/s12879-022-07474-4.
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Affiliation(s)
- Svava E Steiner
- AIMES - Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden.,Department of Neuroscience, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Gustaf Edgren
- Department of Medicine Solna, Clinical Epidemiology Division, Karolinska Institutet, 171 77, Stockholm, Sweden.,Department of Cardiology, Södersjukhuset, Stockholm, Sweden
| | - Keira Melican
- AIMES - Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden.,Department of Neuroscience, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Agneta Richter-Dahlfors
- AIMES - Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden.,Department of Neuroscience, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Annelie Brauner
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, 171 77, Stockholm, Sweden. .,Division of Clinical Microbiology, Karolinska University Hospital, 171 76, Stockholm, Sweden.
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Molitoris BA, Sandoval RM, Wagner MC. Intravital Multiphoton Microscopy as a Tool for Studying Renal Physiology, Pathophysiology and Therapeutics. Front Physiol 2022; 13:827280. [PMID: 35399274 PMCID: PMC8988037 DOI: 10.3389/fphys.2022.827280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 02/09/2022] [Indexed: 11/13/2022] Open
Abstract
Intravital multiphoton microscopy has empowered investigators to study dynamic cell and subcellular processes in vivo within normal and disease organs. Advances in hardware, software, optics, transgenics and fluorescent probe design and development have enabled new quantitative approaches to create a disruptive technology pioneering advances in understanding of normal biology, disease pathophysiology and therapies. Offering superior spatial and temporal resolution with high sensitivity, investigators can follow multiple processes simultaneously and observe complex interactions between different cell types, intracellular organelles, proteins and track molecules for cellular uptake, intracellular trafficking, and metabolism in a cell specific fashion. The technique has been utilized in the kidney to quantify multiple dynamic processes including capillary flow, permeability, glomerular function, proximal tubule processes and determine the effects of diseases and therapeutic mechanisms. Limitations include the depth of tissue penetration with loss of sensitivity and resolution due to scattered emitted light. Tissue clearing technology has virtually eliminated penetration issues for fixed tissue studies. Use of multiphoton microscopy in preclinical animal models offers distinct advantages resulting in new insights into physiologic processes and the pathophysiology and treatment of diseases.
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Lim XC, Yatim SMJM, Chong SY, Wang X, Tan SH, Yang X, Chan SP, Richards AM, Charles CJ, Chan MY, Wang JW. Plasma tissue factor coagulation activity in post-acute myocardial infarction patients. Front Endocrinol (Lausanne) 2022; 13:1008329. [PMID: 36213278 PMCID: PMC9540383 DOI: 10.3389/fendo.2022.1008329] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 09/08/2022] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION Coagulation is involved in fibroproliferative responses following acute myocardial infarction (AMI). Left ventricular (LV) remodeling following AMI is closely associated with progression to heart failure. This study aims to assess the association between plasma tissue factor activity and LV remodeling in post-AMI patients. METHODS We studied 228 patients with AMI and 57 healthy subjects. Patients with AMI were categorized into two age- and sex-matched groups: patients with adverse LV remodeling or reverse LV remodeling, defined by an increase or decrease, respectively, in LV end systolic volume by ≥15% over 6 months. TF activity was measured in plasma collected at baseline (within 72 hours of revascularization), 1 month and 6 months post-AMI. Multiple level longitudinal data analysis with structural equation (ML-SEM) model was used to assess the impact of various clinical variables on TF activity in post-AMI. RESULTS Plasma TF activity in post-AMI patients at baseline (29.05 ± 10.75 pM) was similar to that in healthy subjects but fell at 1 month (21.78 ± 8.23, p<0.001) with partial recovery by 6 months (25.84 ± 8.80, p<0.001) after AMI. Plasma TF activity at 6 month post-AMI was better restored in patients with reverse LV remodeling than those with adverse LV remodeling (27.35 ± 7.14 vs 24.34 ± 9.99; p=0.009) independent of gender, age and relevant cardiovascular risk factors. CONCLUSIONS Plasma TF activity decreased after AMI but was better restored at 6 months in patients with reverse LV remodeling. The clinical significance of changes in post-AMI plasma TF activity needs further investigation.
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Affiliation(s)
- Xiong Chang Lim
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Siti Maryam J. M. Yatim
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Cardiovascular Research Institute, National University Heart Centre Singapore, Singapore, Singapore
| | - Suet Yen Chong
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Cardiovascular Research Institute, National University Heart Centre Singapore, Singapore, Singapore
| | - Xiaoyuan Wang
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Cardiovascular Research Institute, National University Heart Centre Singapore, Singapore, Singapore
| | - Sock Hwee Tan
- Cardiovascular Research Institute, National University Heart Centre Singapore, Singapore, Singapore
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Xiaoxun Yang
- Cardiovascular Research Institute, National University Heart Centre Singapore, Singapore, Singapore
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Siew Pang Chan
- Cardiovascular Research Institute, National University Heart Centre Singapore, Singapore, Singapore
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - A Mark Richards
- Cardiovascular Research Institute, National University Heart Centre Singapore, Singapore, Singapore
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Chris J. Charles
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Cardiovascular Research Institute, National University Heart Centre Singapore, Singapore, Singapore
| | - Mark Y. Chan
- Cardiovascular Research Institute, National University Heart Centre Singapore, Singapore, Singapore
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- *Correspondence: Jiong-Wei Wang, ; Mark Y. Chan,
| | - Jiong-Wei Wang
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Cardiovascular Research Institute, National University Heart Centre Singapore, Singapore, Singapore
- Nanomedicine Translational Research Programme, Centre for NanoMedicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- *Correspondence: Jiong-Wei Wang, ; Mark Y. Chan,
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Tran VLT, Hortle E, Britton WJ, Oehlers SH. Common anti-haemostatic medications increase the severity of systemic infection by uropathogenic Escherichia coli. Microbiol Res 2021; 254:126918. [PMID: 34798538 DOI: 10.1016/j.micres.2021.126918] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/16/2021] [Accepted: 11/10/2021] [Indexed: 12/19/2022]
Abstract
Uropathogenic Escherichia coli (UPEC) causes urinary tract infections that can result in sepsis. The haemostatic system is protective in the pyelonephritis stage of ascending UPEC infection, but the role of the haemostatic system has not been investigated during sepsis. Here we utilize a zebrafish-UPEC systemic infection model to visualize infection-induced coagulation and examine the effects of commonly prescribed anti-haemostatic medications on the infection severity. Treatment of systemically infected zebrafish with warfarin, aspirin, or ticagrelor reduced host survival, while stabilization of clots with aminocaproic acid increased host survival. Anti-haemostatic drug treatment increased UPEC burden. Our findings provide evidence that commonly prescribed anti-haemostatic medications may worsen the outcome of severe UPEC infection.
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Affiliation(s)
- Vi L T Tran
- Tuberculosis Research Program at the Centenary Institute, The University of Sydney, Camperdown, NSW, Australia
| | - Elinor Hortle
- Tuberculosis Research Program at the Centenary Institute, The University of Sydney, Camperdown, NSW, Australia; The University of Sydney, Faculty of Medicine and Health & Marie Bashir Institute, Camperdown, NSW, Australia.
| | - Warwick J Britton
- Tuberculosis Research Program at the Centenary Institute, The University of Sydney, Camperdown, NSW, Australia; Department of Clinical Immunology, Royal Prince Alfred Hospital, Camperdown, NSW, 2050 Australia
| | - Stefan H Oehlers
- Tuberculosis Research Program at the Centenary Institute, The University of Sydney, Camperdown, NSW, Australia; The University of Sydney, Faculty of Medicine and Health & Marie Bashir Institute, Camperdown, NSW, Australia.
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Zhang R, Lu S, Yang X, Li M, Jia H, Liao J, Jing Q, Wu Y, Wang H, Xiao F, Bai X, Na X, Kang Y, Wan L, Yang J. miR-19a-3p downregulates tissue factor and functions as a potential therapeutic target for sepsis-induced disseminated intravascular coagulation. Biochem Pharmacol 2021; 192:114671. [PMID: 34246626 DOI: 10.1016/j.bcp.2021.114671] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 06/30/2021] [Accepted: 07/01/2021] [Indexed: 02/05/2023]
Abstract
Sepsis-induced disseminated intravascular coagulation (DIC) is a common life-threatening terminal-stage disease with high mortality. This study aimed to identify effective miRNAs as therapeutic targets for DIC. Bioinformatics and luciferase reporter gene analyses were performed to predict miR-19a-3p and validate that it targets tissue factor (TF). Quantitative real-time PCR was used to detect the expression of miR-19a-3p and TF, and TF procoagulant activity was determined using the chromogenic substrate method. Western blotting was used to detect the protein levels of TF, AKT serine/threonine kinase (AKT), extracellular regulated protein kinases (ERK), nuclear factor kappa B (NF-κB) P65, NFKB inhibitor alpha (IκB-a) and their phosphorylated counterparts in cell experiments. Furthermore, a rat model was established to explore the potential of miR-19a-3p in DIC treatment. As a result, a human clinical study revealed that miR-19a-3p was downregulated and that TF was upregulated in neonates with sepsis-induced DIC compared with those in the control group. The luciferase reporter assay showed that TF was a direct target of miR-19a-3p. Cell experiments verified that the mRNA and protein levels of TF, and the p-AKT/AKT, p-Erk/Erk, p-P65/P65, p-IκB-a/IκB-a ratios, and TF procoagulant activity were significantly decreased in lipopolysaccharide (LPS) -induced human peripheral blood mononuclear cells (PBMCs) and human umbilical vein endothelial cells (HUVECs) inhibited by overexpression of miR-19a-3p, and that miR-19a-3p regulating TF was dependent on the NF-kB and AKT pathways. In vivo, miR-19a-3p injection into DIC rats suppressed the mRNA expression of TF; more importantly, significant improvements in coagulation function indicators and in histopathologies of lung and kidney were observed. In conclusion, miR-19a-3p may suppress DIC by targeting TF and might be a potential therapeutic target in treating sepsis-induced DIC.
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Affiliation(s)
- Rong Zhang
- Department of Pediatrics, Sichuan Academy of Medical Sciences&Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, No.32, West section2, 1st ring road, Qingyang District, Chengdu, Sichuan 610072, China
| | - Sifen Lu
- Precision Medicine Key Laboratory of Sichuan Province and Precision Medicine Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xudan Yang
- Department of Pathology, Sichuan Academy of Medical Sciences&Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, No.32, West section2, 1st ring road, Qingyang District, Chengdu, Sichuan 610072, China
| | - Maojun Li
- Department of Pediatrics, Sichuan Academy of Medical Sciences&Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, No.32, West section2, 1st ring road, Qingyang District, Chengdu, Sichuan 610072, China
| | - Hui Jia
- Department of Pediatrics, Sichuan Academy of Medical Sciences&Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, No.32, West section2, 1st ring road, Qingyang District, Chengdu, Sichuan 610072, China
| | - Jing Liao
- Department of Pediatrics, Sichuan Academy of Medical Sciences&Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, No.32, West section2, 1st ring road, Qingyang District, Chengdu, Sichuan 610072, China
| | - Qing Jing
- Department of Pediatrics, Sichuan Academy of Medical Sciences&Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, No.32, West section2, 1st ring road, Qingyang District, Chengdu, Sichuan 610072, China
| | - Yanmei Wu
- Department of Pediatrics, Sichuan Academy of Medical Sciences&Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, No.32, West section2, 1st ring road, Qingyang District, Chengdu, Sichuan 610072, China
| | - Haichuan Wang
- Department of Pediatrics, Sichuan Academy of Medical Sciences&Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, No.32, West section2, 1st ring road, Qingyang District, Chengdu, Sichuan 610072, China
| | - Feng Xiao
- Department of Pediatrics, Sichuan Academy of Medical Sciences&Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, No.32, West section2, 1st ring road, Qingyang District, Chengdu, Sichuan 610072, China
| | - Xiaohong Bai
- Department of Pediatrics, Sichuan Academy of Medical Sciences&Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, No.32, West section2, 1st ring road, Qingyang District, Chengdu, Sichuan 610072, China
| | - Xiaoxue Na
- School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan 610072, China
| | - Yulin Kang
- Institute of Environmental Information, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
| | - Ling Wan
- Department of Ophthalmology, Sichuan Academy of Medical Sciences&Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, No.32, West section2, 1st ring road, Qingyang District, Chengdu, Sichuan 610072, China.
| | - Jiyun Yang
- The Key Laboratory for Human Disease Gene Study of Sichuan Province, Prenatal Diagnosis Center, Sichuan Academy of Medical Sciences&Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, No.32, West section2, 1st ring road, Qingyang District, Chengdu, Sichuan 610072, China.
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Steiner SE, Choong FX, Antypas H, Morado-Urbina CE, Schulz A, Bersellini Farinotti A, Bas DB, Svensson CI, Richter-Dahlfors A, Melican K. UPEC kidney infection triggers neuro-immune communication leading to modulation of local renal inflammation by splenic IFNγ. PLoS Pathog 2021; 17:e1009553. [PMID: 34015044 PMCID: PMC8136731 DOI: 10.1371/journal.ppat.1009553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 04/09/2021] [Indexed: 11/18/2022] Open
Abstract
Bacterial infection results in a veritable cascade of host responses, both local and systemic. To study the initial stages of host-pathogen interaction in living tissue we use spatially-temporally controlled in vivo models. Using this approach, we show here that within 4 h of a uropathogenic Escherichia coli (UPEC) infection in the kidney, an IFNγ response is triggered in the spleen. This rapid infection-mediated inter-organ communication was found to be transmitted via nerve signalling. Bacterial expression of the toxin α-hemolysin directly and indirectly activated sensory neurons, which were identified in the basement membrane of renal tubules. Nerve activation was transmitted via the splenic nerve, inducing upregulation of IFNγ in the marginal zones of the spleen that led to increasing concentrations of IFNγ in the circulation. We found that IFNγ modulated the inflammatory signalling generated by renal epithelia cells in response to UPEC infection. This demonstrates a new concept in the host response to kidney infection; the role of nerves in sensing infection and rapidly triggering a systemic response which can modulate inflammation at the site of infection. The interplay between the nervous and immune systems is an exciting, developing field with the appealing prospect of non-pharmaceutical interventions. Our study identifies an important role for systemic neuro-immune communication in modulating inflammation during the very first hours of a local bacterial infection in vivo.
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Affiliation(s)
- Svava E. Steiner
- AIMES—Center for the Advancement of Integrated Medical and Engineering Sciences, Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Ferdinand X. Choong
- AIMES—Center for the Advancement of Integrated Medical and Engineering Sciences, Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Haris Antypas
- AIMES—Center for the Advancement of Integrated Medical and Engineering Sciences, Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Carlos E. Morado-Urbina
- Department for Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Anette Schulz
- AIMES—Center for the Advancement of Integrated Medical and Engineering Sciences, Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Alex Bersellini Farinotti
- Department for Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Duygu B. Bas
- Department for Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Camilla I. Svensson
- Department for Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Agneta Richter-Dahlfors
- AIMES—Center for the Advancement of Integrated Medical and Engineering Sciences, Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
- * E-mail: (AR-D); (KM)
| | - Keira Melican
- AIMES—Center for the Advancement of Integrated Medical and Engineering Sciences, Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
- * E-mail: (AR-D); (KM)
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10
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Kvedaraite E, Hertwig L, Sinha I, Ponzetta A, Hed Myrberg I, Lourda M, Dzidic M, Akber M, Klingström J, Folkesson E, Muvva JR, Chen P, Gredmark-Russ S, Brighenti S, Norrby-Teglund A, Eriksson LI, Rooyackers O, Aleman S, Strålin K, Ljunggren HG, Ginhoux F, Björkström NK, Henter JI, Svensson M. Major alterations in the mononuclear phagocyte landscape associated with COVID-19 severity. Proc Natl Acad Sci U S A 2021; 118:e2018587118. [PMID: 33479167 PMCID: PMC8017719 DOI: 10.1073/pnas.2018587118] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Dendritic cells (DCs) and monocytes are crucial mediators of innate and adaptive immune responses during viral infection, but misdirected responses by these cells may contribute to immunopathology. Here, we performed high-dimensional flow cytometry-analysis focusing on mononuclear phagocyte (MNP) lineages in SARS-CoV-2-infected patients with moderate and severe COVID-19. We provide a deep and comprehensive map of the MNP landscape in COVID-19. A redistribution of monocyte subsets toward intermediate monocytes and a general decrease in circulating DCs was observed in response to infection. Severe disease coincided with the appearance of monocytic myeloid-derived suppressor cell-like cells and a higher frequency of pre-DC2. Furthermore, phenotypic alterations in MNPs, and their late precursors, were cell-lineage-specific and associated either with the general response against SARS-CoV-2 or COVID-19 severity. This included an interferon-imprint in DC1s observed in all patients and a decreased expression of the coinhibitory molecule CD200R in pre-DCs, DC2s, and DC3 subsets of severely sick patients. Finally, unsupervised analysis revealed that the MNP profile, alone, pointed to a cluster of COVID-19 nonsurvivors. This study provides a reference for the MNP response to SARS-CoV-2 infection and unravels mononuclear phagocyte dysregulations associated with severe COVID-19.
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Affiliation(s)
- Egle Kvedaraite
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, 171 77 Stockholm, Sweden;
- Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Laura Hertwig
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, 171 77 Stockholm, Sweden
| | - Indranil Sinha
- Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Andrea Ponzetta
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, 171 77 Stockholm, Sweden
| | - Ida Hed Myrberg
- Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Magda Lourda
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, 171 77 Stockholm, Sweden
- Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Majda Dzidic
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, 171 77 Stockholm, Sweden
| | - Mira Akber
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, 171 77 Stockholm, Sweden
| | - Jonas Klingström
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, 171 77 Stockholm, Sweden
| | - Elin Folkesson
- Department of Infectious Diseases, Karolinska University Hospital, 171 77 Stockholm, Sweden
| | - Jagadeeswara Rao Muvva
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, 171 77 Stockholm, Sweden
| | - Puran Chen
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, 171 77 Stockholm, Sweden
| | - Sara Gredmark-Russ
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, 171 77 Stockholm, Sweden
- Department of Infectious Diseases, Karolinska University Hospital, 171 77 Stockholm, Sweden
| | - Susanna Brighenti
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, 171 77 Stockholm, Sweden
| | - Anna Norrby-Teglund
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, 171 77 Stockholm, Sweden
| | - Lars I Eriksson
- Department of Physiology and Pharmacology, Section for Anesthesiology and Intensive Care, Karolinska Institutet, 171 77 Stockholm, Sweden
- Function Perioperative Medicine and Intensive Care, Karolinska University Hospital, 171 77 Stockholm, Sweden
| | - Olav Rooyackers
- Function Perioperative Medicine and Intensive Care, Karolinska University Hospital, 171 77 Stockholm, Sweden
- Division of Anesthesiology and Intensive Care, Department of Clinical Science, Intervention, and Technology, Karolinska Institutet, 141 52 Huddinge, Sweden
| | - Soo Aleman
- Department of Infectious Diseases, Karolinska University Hospital, 171 77 Stockholm, Sweden
- Division of Infectious Diseases, Department of Medicine Huddinge, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Kristoffer Strålin
- Department of Infectious Diseases, Karolinska University Hospital, 171 77 Stockholm, Sweden
- Division of Infectious Diseases, Department of Medicine Huddinge, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Hans-Gustaf Ljunggren
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, 171 77 Stockholm, Sweden
| | - Florent Ginhoux
- Singapore Immunology Network, Agency for Science, Technology and Research, BIOPOLIS, 138648 Singapore, Singapore
- Shanghai Institute of Immunology, Shanghai JiaoTong University School of Medicine, 200240 Shanghai, China
- Translational Immunology Institute, SingHealth Duke-National University of Singapore Academic Medical Centre, 168753 Singapore, Singapore
| | - Niklas K Björkström
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, 171 77 Stockholm, Sweden
| | - Jan-Inge Henter
- Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institutet, 171 77 Stockholm, Sweden
- Pediatric Oncology, Theme of Children's Health, Karolinska University Hospital, 171 77 Stockholm, Sweden
| | - Mattias Svensson
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, 171 77 Stockholm, Sweden
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11
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Investigation of CD26, a potential SARS-CoV-2 receptor, as a biomarker of age and pathology. Biosci Rep 2020; 40:226987. [PMID: 33205807 PMCID: PMC7693198 DOI: 10.1042/bsr20203092] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 11/17/2020] [Accepted: 11/17/2020] [Indexed: 01/08/2023] Open
Abstract
Objective: In some individuals, coronavirus severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection leads to a variety of serious inflammatory symptoms, including blood clotting and acute respiratory distress. Death due to COVID-19 shows a steep rise in relation to age. Comorbidities such as type 2 diabetes mellitus (T2DM), hypertension, and cardiovascular disease also increase susceptibility. It has been reported that T-cell regulatory dipeptidyl peptidase 4 (DPP4; cluster of differentiation 26 (CD26)) binds to the external spike (S) glycoprotein of SARS-CoV-2 as a receptor, for the viral entry into the host cell. CD26 is expressed on many cells, including T and natural killer (NK) cells of the immune system, as a membrane-anchored form. A soluble form (sCD26) is also found in the blood plasma and cerebrospinal fluid (CSF). Approach and results: To investigate a possible relationship between sCD26 levels, age and pathology, serum samples were collected from control, T2DM and age-related dementia (ARD) subjects. A significant reduction in serum sCD26 levels was seen in relation to age. ARD and T2DM were also associated with lower levels of sCD26. The analysis of blood smears revealed different cellular morphologies: in controls, CD26 was expressed around the neutrophil membrane, whereas in T2DM, excessive sCD26 was found around the mononucleated cells (MNCs). ARD subjects had abnormal fragmented platelets and haemolysis due to low levels of sCD26. Conclusions: These findings may help to explain the heterogeneity of SARS-CoV-2 infection. High serum sCD26 levels could protect from viral infection by competively inhibiting the virus binding to cellular CD26, whereas low sCD26 levels could increase the risk of infection. If so measuring serum sCD26 level may help to identify individuals at high risk for the COVID-19 infection.
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12
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Martín-Rodríguez AJ, Rhen M, Melican K, Richter-Dahlfors A. Nitrate Metabolism Modulates Biosynthesis of Biofilm Components in Uropathogenic Escherichia coli and Acts as a Fitness Factor During Experimental Urinary Tract Infection. Front Microbiol 2020; 11:26. [PMID: 32082279 PMCID: PMC7005491 DOI: 10.3389/fmicb.2020.00026] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 01/08/2020] [Indexed: 11/15/2022] Open
Abstract
To successfully colonize a variety of environments, bacteria can coordinate complex collective behaviors such as biofilm formation. To thrive in oxygen limited niches, bacteria’s versatile physiology enables the utilization of alternative electron acceptors. Nitrate, the second most favorable electron acceptor after oxygen, plays a prominent role in the physiology of uropathogenic Escherichia coli (UPEC) and is abundantly found in urine. Here we analyzed the role of extracellular nitrate in the pathogenesis of the UPEC strain CFT073 with an initial focus on biofilm formation. Colony morphotyping in combination with extensive mutational, transcriptional, and protein expression analyses of CFT073 wild-type and mutants deficient in one or several nitrate reductases revealed an association between nitrate reduction and the biosynthesis of biofilm extracellular matrix components. We identified a role for the nitrate response regulator NarL in modulating expression of the biofilm master regulator CsgD. To analyze the role of nitrate reduction during infection in vivo, we tested wild-type CFT073 and a nitrate reductase null mutant in an ascending urinary tract infection (UTI) model. Individually, each strain colonized extensively, suggesting that nitrate reduction is expendable during UTI. However, during competitive co-infection, the strain incapable of nitrate reduction was strongly outcompeted. This suggests that nitrate reduction can be considered a non-essential but advantageous fitness factor for UPEC pathogenesis. This implies that UPEC rapidly adapts their metabolic needs to the microenvironment of infected tissue. Collectively, this work demonstrates a unique association between nitrate respiration, biofilm formation, and UPEC pathogenicity, highlighting how the use of alternative electron acceptors enables bacterial pathogens to adapt to challenging infectious microenvironments.
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Affiliation(s)
| | - Mikael Rhen
- Department of Neuroscience, Swedish Medical Nanoscience Center, Karolinska Institutet, Solna, Sweden.,Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Solna, Sweden.,Laboratory for Molecular Infection Medicine Sweden (MIMS), Department of Molecular Biology, Umeå Centre for Microbial Research (UCMR), Umeå University, Umeå, Sweden
| | - Keira Melican
- Department of Neuroscience, Swedish Medical Nanoscience Center, Karolinska Institutet, Solna, Sweden
| | - Agneta Richter-Dahlfors
- Department of Neuroscience, Swedish Medical Nanoscience Center, Karolinska Institutet, Solna, Sweden
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13
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Sedin J, Giraud A, Steiner SE, Ahl D, Persson AEG, Melican K, Richter-Dahlfors A, Phillipson M. High Resolution Intravital Imaging of the Renal Immune Response to Injury and Infection in Mice. Front Immunol 2019; 10:2744. [PMID: 31921099 PMCID: PMC6916672 DOI: 10.3389/fimmu.2019.02744] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 11/08/2019] [Indexed: 12/14/2022] Open
Abstract
We developed an experimental set up that enables longitudinal studies of immune cell behavior in situ in the challenged as well as unchallenged kidney of anesthetized mice over several hours. Using highly controlled vacuum to stabilize the kidney, the superficial renal cortex could continuously be visualized with minimal disruption of the local microenvironment. No visible changes in blood flow or neutrophils and macrophages numbers were observed after several hours of visualizing the unchallenged kidney, indicating a stable tissue preparation without apparent tissue damage. Applying this set up to monocyte/macrophage (CX3CR1GFP/+) reporter mice, we observed the extensive network of stellate-shaped CX3CR1 positive cells (previously identified as renal mononuclear phagocytes). The extended dendrites of the CX3CR1 positive cells were found to bridge multiple capillaries and tubules and were constantly moving. Light induced sterile tissue injury resulted in rapid neutrophil accumulation to the site of injury. Similarly, microinfusion of uropathogenic Escherichia coli into a single nephron induced a rapid and massive recruitment of neutrophils to the site of infection, in addition to active bacterial clearance by neutrophils. In contrast, the kidney resident mononuclear phagocytes were observed to not increase in numbers or migrate toward the site of injury or infection. In conclusion, this model allows for longitudinal imaging of responses to localized kidney challenges in the mouse.
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Affiliation(s)
- John Sedin
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Antoine Giraud
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Svava E. Steiner
- Swedish Medical Nanoscience Center, Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - David Ahl
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | | | - Keira Melican
- Swedish Medical Nanoscience Center, Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Agneta Richter-Dahlfors
- Swedish Medical Nanoscience Center, Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Mia Phillipson
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
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14
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Richter-Dahlfors A, Melican K. A Cinematic View of Tissue Microbiology in the Live Infected Host. Microbiol Spectr 2019; 7:10.1128/microbiolspec.bai-0007-2019. [PMID: 31152520 PMCID: PMC11026076 DOI: 10.1128/microbiolspec.bai-0007-2019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Indexed: 11/20/2022] Open
Abstract
Tissue microbiology allows for the study of bacterial infection in the most clinically relevant microenvironment, the living host. Advancements in techniques and technology have facilitated the development of novel ways of studying infection. Many of these advancements have come from outside the field of microbiology. In this article, we outline the progression from bacteriology through cellular microbiology to tissue microbiology, highlighting seminal studies along the way. We outline the enormous potential but also some of the challenges of the tissue microbiology approach. We focus on the role of emerging technologies in the continual development of infectious disease research and highlight future possibilities in our ongoing quest to understand host-pathogen interaction.
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Affiliation(s)
- Agneta Richter-Dahlfors
- Swedish Medical Nanoscience Centre, Department of Neuroscience, Karolinska Institutet, SE-17177, Stockholm, Sweden
| | - Keira Melican
- Swedish Medical Nanoscience Centre, Department of Neuroscience, Karolinska Institutet, SE-17177, Stockholm, Sweden
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