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Fialho S, Trieu-Cuot P, Ferreira P, Oliveira L. Could P2X7 receptor be a potencial target in neonatal sepsis? Int Immunopharmacol 2024; 142:112969. [PMID: 39241519 DOI: 10.1016/j.intimp.2024.112969] [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: 05/21/2024] [Revised: 07/31/2024] [Accepted: 08/15/2024] [Indexed: 09/09/2024]
Abstract
The United Nations Inter-Agency Group for Child Mortality Estimation (UNIGME) estimates that every year 2.5 million neonates die in their first month of life, accounting for nearly one-half of deaths in children under 5 years of age. Neonatal sepsis is the third leading cause of neonatal mortality. The worldwide burden of bacterial sepsis is expected to increase in the next decades due to the lack of effective molecular therapies to replace the administration of antibiotics whose efficacy is compromised by the emergence of resistant strains. In addition, prolonged exposure to antibiotics can have negative effects by increasing the risk of infection by other organisms. With the global burden of sepsis increasing and no vaccine nor other therapeutic approaches proved efficient, the World Health Organization (WHO) stresses the need for new therapeutic targets for sepsis treatment and infection prevention (WHO, A73/32). In response to this unresolved clinical issue, the P2X7 receptor (P2X7R), a key component of the inflammatory cascade, has emerged as a potential target for treating inflammatory/infection diseases. Indeed numerous studies have demonstrated the relevance of the purinergic system as a pharmacological target in addressing immune-mediated inflammatory diseases by regulating immunity, inflammation, and organ function. In this review, we analyze key features of sepsis immunopathophysiology focusing in neonatal sepsis and on how the immunomodulatory role of P2X7R could be a potential pharmacological target for reducing the burden of neonatal sepsis.
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Affiliation(s)
- Sales Fialho
- Department of ImmunoPhysiology and Pharmacology, ICBAS - School of Medicine and Biomedical Sciences - University of Porto, Porto, Portugal
| | - Patrick Trieu-Cuot
- Institut Pasteur, Université Paris Cité, Unité de Biologie des Bactéries Pathogènes à Gram-positif, Paris, France
| | - Paula Ferreira
- Department of ImmunoPhysiology and Pharmacology, ICBAS - School of Medicine and Biomedical Sciences - University of Porto, Porto, Portugal; Institute of Research and Innovation in Health (i3S), University of Porto, Porto, Portugal; Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal
| | - Laura Oliveira
- Department of ImmunoPhysiology and Pharmacology, ICBAS - School of Medicine and Biomedical Sciences - University of Porto, Porto, Portugal; Center for Drug Discovery and Innovative Medicines (MedInUP)/Rise Health, University of Porto, Portugal.
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2
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Wang C, Li C, Yang P, Liu K, Xiong X, Liu Y, Li X, Zhai S. High adsorption capacity of hemoperfusion on imipenem in critically ill patients with septic shock: a case report. BMC Infect Dis 2024; 24:894. [PMID: 39217309 PMCID: PMC11366162 DOI: 10.1186/s12879-024-09774-3] [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: 02/21/2024] [Accepted: 08/20/2024] [Indexed: 09/04/2024] Open
Abstract
BACKGROUND Sepsis is a life-threatening organ dysfunction caused by an excessive host response to infection, manifested by elevated levels of inflammatory cytokines. At present, the use of hemoperfusion to remove inflammatory cytokines from the bloodstream has been expanding. Meanwhile, the pharmacokinetics and pharmacodynamics characteristics of antibiotics in critically ill patients may be impacted by hemoperfusion. CASE PRESENTATION The patient was a 69-year-old male with poorly controlled type 2 diabetes. When admitted to the ICU, Multiple Organ Dysfunction Syndrome (MODS) appeared within 48 h, and he was suspected of septic shock due to acute granulocytopenia and significantly increased procalcitonin. Broad-spectrum antibiotics imipenem was administered according to Sepsis 3.0 bundle and hemoperfusion lasting 4 h with a neutron-macroporous resin device (HA-380, Jafron, China) five times was conducted to lower the extremely high value of serum inflammatory factors. Blood samples were collected to measure imipenem plasma concentration to investigate the effect of hemoperfusion quantitatively. This study showed that 4 h of hemoperfusion had a good adsorption ability on inflammatory factors and could remove about 75.2% of imipenem. CONCLUSIONS This case demonstrated the high adsorption capacity of hemoperfusion on imipenem in critically ill patients. It implies a timely imipenem supplement is required, especially before hemoperfusion.
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Affiliation(s)
- Chuhui Wang
- Department of Pharmacy, Peking University Third Hospital, Beijing, 100191, China
- Department of Pharmacy Administration and Clinical Pharmacy, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Chao Li
- Department of Intensive Care Unit, Peking University Third Hospital, Beijing, 100191, China
| | - Ping Yang
- Department of Pharmacy, Peking University Third Hospital, Beijing, 100191, China
| | - Kaixi Liu
- Department of Anesthesiology, Peking University Third Hospital, Beijing, 100191, China
| | - Xin Xiong
- Department of Pharmacy, Peking University Third Hospital, Beijing, 100191, China
| | - Yangang Liu
- Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, 100191, China
| | - Xiaoxiao Li
- Department of Pharmacy, Peking University Third Hospital, Beijing, 100191, China.
- Department of Pharmacy Administration and Clinical Pharmacy, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China.
| | - Suodi Zhai
- Department of Pharmacy, Peking University Third Hospital, Beijing, 100191, China.
- Department of Pharmacy Administration and Clinical Pharmacy, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China.
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3
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Joosten SCM, Wiersinga WJ, Poll TVD. Dysregulation of Host-Pathogen Interactions in Sepsis: Host-Related Factors. Semin Respir Crit Care Med 2024; 45:469-478. [PMID: 38950605 DOI: 10.1055/s-0044-1787554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/03/2024]
Abstract
Sepsis stands as a prominent contributor to sickness and death on a global scale. The most current consensus definition characterizes sepsis as a life-threatening organ dysfunction stemming from an imbalanced host response to infection. This definition does not capture the intricate array of immune processes at play in sepsis, marked by simultaneous states of heightened inflammation and immune suppression. This overview delves into the immune-related processes of sepsis, elaborating about mechanisms involved in hyperinflammation and immune suppression. Moreover, we discuss stratification of patients with sepsis based on their immune profiles and how this could impact future sepsis management.
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Affiliation(s)
- Sebastiaan C M Joosten
- Centre for Experimental and Molecular Medicine, Amsterdam University Medical Center, Amsterdam, The Netherlands
| | - Willem J Wiersinga
- Centre for Experimental and Molecular Medicine, Amsterdam University Medical Center, Amsterdam, The Netherlands
- Division of Infectious Diseases, Amsterdam University Medical Center, Amsterdam, The Netherlands
| | - Tom van der Poll
- Centre for Experimental and Molecular Medicine, Amsterdam University Medical Center, Amsterdam, The Netherlands
- Division of Infectious Diseases, Amsterdam University Medical Center, Amsterdam, The Netherlands
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Lungu N, Popescu DE, Gorun FI, Nan G, Popa ZL, Manea A, Brandibur TE, Jura AMC, Costescu S, Belovan B, Boia M. D-dimer as a Useful Biomarker in Early Diagnosis of Neonatal Sepsis: A Single-Center Study From Romania. Cureus 2024; 16:e65213. [PMID: 39045021 PMCID: PMC11265774 DOI: 10.7759/cureus.65213] [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] [Accepted: 07/23/2024] [Indexed: 07/25/2024] Open
Abstract
BACKGROUND This study evaluates the role of D-dimer in identifying neonatal sepsis and their potential value in clinical decision-making due to challenges in early detection. METHODOLOGY A case-control study was conducted on 102 neonates at the Children's Clinical Hospital "Louis Turcanu" in Timisoara, Romania, from October 2018 to July 2023. The participants were divided into two groups: those with neonatal sepsis and those without sepsis. RESULTS The study found that neonates with sepsis were more likely to be delivered by cesarean section and had higher rates of premature ruptured membranes compared to those without sepsis. The D-dimer biomarker's predictive value for sepsis was assessed using a receiver operating characteristic (ROC) curve, with an area under the curve (AUC) exceeding 0.982 and an optimum cutoff value of 342 ng/mL. An increase in neonatal D-dimer significantly increases the likelihood of sepsis by 2.7% per unit increase. A value above 250 ng/mL indicates a 127-fold increased likelihood of sepsis. The D-dimer's ability to predict mortality in newborns with sepsis is unsatisfactory, with an AUC of 0.528. CONCLUSIONS D-dimer, a potential biomarker of neonatal sepsis, warrants further clinical investigation to enhance diagnostic sensitivity and specificity, demonstrating its potential in conjunction with other sepsis markers.
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Affiliation(s)
- Nicoleta Lungu
- Department of Obstetrics-Gynecology and Neonatology, Victor Babeş University of Medicine and Pharmacy, Timisoara, ROU
| | - Daniela-Eugenia Popescu
- Department of Obstetrics-Gynecology and Neonatology, Victor Babeş University of Medicine and Pharmacy, Timisoara, ROU
| | - Florin I Gorun
- Department of Obstetrics and Gynecology, Timisoara Clinical Municipal Emergency Hospital, Timisoara, ROU
| | - Georgiana Nan
- Department of Obstetrics and Gynecology, Municipal Emergency Clinical Hospital, Timisoara, ROU
| | - Zoran L Popa
- Department of Obstetrics-Gynecology and Neonatology, Victor Babeş University of Medicine and Pharmacy, Timisoara, ROU
| | - Aniko Manea
- Department of Obstetrics-Gynecology and Neonatology, Victor Babeş University of Medicine and Pharmacy, Timisoara, ROU
| | - Timea Elisabeta Brandibur
- Department of Obstetrics-Gynecology and Neonatology, Victor Babeş University of Medicine and Pharmacy, Timisoara, ROU
| | | | - Sergiu Costescu
- Department of Obstetrics and Gynecology, Oravita City Hospital, Oravita, ROU
| | - Biliana Belovan
- Doctoral School, Victor Babeş University of Medicine and Pharmacy, Timisoara, ROU
| | - Marioara Boia
- Department of Obstetrics-Gynecology and Neonatology, Victor Babeş University of Medicine and Pharmacy, Timisoara, ROU
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Chekrouni N, van Soest TM, da Cruz Campos AC, Brouwer MC, van de Beek D. Bacterial load in cerebrospinal fluid predicts unfavourable outcome in pneumococcal meningitis: a prospective nationwide cohort study. Clin Microbiol Infect 2024; 30:772-778. [PMID: 38479702 DOI: 10.1016/j.cmi.2024.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 03/01/2024] [Accepted: 03/07/2024] [Indexed: 04/01/2024]
Abstract
OBJECTIVES The objective of this study was to determine the role of cerebrospinal fluid (CSF) bacterial load in adults with pneumococcal meningitis. METHODS We quantified bacterial load in CSF samples from the diagnostic lumbar puncture of adults with community-acquired pneumococcal meningitis. We also measured CSF concentrations of complement component 5a (C5a), and determined associations between bacterial load, clinical characteristics, C5a and unfavourable outcome (Glasgow Outcome Scale score <5). RESULTS Bacterial load was quantified in 152 CSF samples. Median age of these patients was 61 years (interquartile range [IQR] 51-68), and 69 of 152 (45%) were female. Median CSF bacterial load was 1.6 × 104 DNA copies/mL (IQR 3.4 × 103-1.2 × 105), and did not correlate with CSF white cell count nor with CSF protein concentrations. Median CSF C5a concentration was 35.8 mg/L (IQR 15.9-105.6), and was moderately correlated with CSF bacterial loads (Spearman's rho = 0.42; p < 0001). High bacterial loads were associated with development of complications, such as circulatory shock (OR per logarithmic increase: 2.4, 95% CI: 2.0-2.9; p < 0.001) and cerebrovascular complications [OR: 1.9, 95% CI: 1.6-2.3; p < 0.001]). High bacterial loads were also associated with unfavourable outcome (OR: 2.8, 95% CI: 2.4-3.3; p < 0.001) and death (OR: 3.1, 95% CI: 2.6-3.8; p < 0.001). In a multivariable regression model including age, immunocompromised state, extrameningeal infection focus, admission Glasgow Coma Scale score and CSF C5a concentration, CSF bacterial load remained an independent predictor of unfavourable outcome (adjusted OR: 2.5, 95% CI: 1.6-3.9; p < 0.001). DISCUSSION High CSF bacterial load predicts the development of complications and unfavourable outcome in adults with pneumococcal meningitis.
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Affiliation(s)
- Nora Chekrouni
- Department of Neurology, Amsterdam UMC, University of Amsterdam, Amsterdam Neuroscience, Meibergdreef, Amsterdam, The Netherlands
| | - Thijs M van Soest
- Department of Neurology, Amsterdam UMC, University of Amsterdam, Amsterdam Neuroscience, Meibergdreef, Amsterdam, The Netherlands
| | - Ana C da Cruz Campos
- Department of Neurology, Amsterdam UMC, University of Amsterdam, Amsterdam Neuroscience, Meibergdreef, Amsterdam, The Netherlands
| | - Matthijs C Brouwer
- Department of Neurology, Amsterdam UMC, University of Amsterdam, Amsterdam Neuroscience, Meibergdreef, Amsterdam, The Netherlands
| | - Diederik van de Beek
- Department of Neurology, Amsterdam UMC, University of Amsterdam, Amsterdam Neuroscience, Meibergdreef, Amsterdam, The Netherlands.
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Stephens D, Faghihi Z, Moniruzzaman M. Widespread occurrence and diverse origins of polintoviruses influence lineage-specific genome dynamics in stony corals. Virus Evol 2024; 10:veae039. [PMID: 38808038 PMCID: PMC11131425 DOI: 10.1093/ve/veae039] [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: 11/02/2023] [Revised: 04/29/2024] [Accepted: 05/12/2024] [Indexed: 05/30/2024] Open
Abstract
Stony corals (Order: Scleractinia) are central to vital marine habitats known as coral reefs. Numerous stressors in the Anthropocene are contributing to the ongoing decline in coral reef health and coverage. While viruses are established modulators of marine microbial dynamics, their interactions within the coral holobiont and impact on coral health and physiology remain unclear. To address this key knowledge gap, we investigated diverse stony coral genomes for 'endogenous' viruses. Our study uncovered a remarkable number of integrated viral elements recognized as 'Polintoviruses' (Class Polintoviricetes) in thirty Scleractinia genomes; with several species harboring hundreds to thousands of polintoviruses. We reveal massive paralogous expansion of polintoviruses in stony coral genomes, alongside the presence of integrated elements closely related to Polinton-like viruses (PLVs), a group of viruses that exist as free virions. These results suggest multiple integrations of polintoviruses and PLV-relatives, along with paralogous expansions, shaped stony coral genomes. Re-analysis of existing gene expression data reveals all polintovirus structural and non-structural hallmark genes are expressed, providing support for free virion production from polintoviruses. Our results, revealing a significant diversity of polintovirus across the Scleractinia order, open a new research avenue into polintovirus and their possible roles in disease, genomic plasticity, and environmental adaptation in this key group of organisms.
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Affiliation(s)
- Danae Stephens
- Department of Marine Biology and Ecology, The Rosenstiel School of Marine, Atmospheric and Earth Science, University of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149-1031, USA
| | - Zahra Faghihi
- Department of Marine Biology and Ecology, The Rosenstiel School of Marine, Atmospheric and Earth Science, University of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149-1031, USA
| | - Mohammad Moniruzzaman
- Department of Marine Biology and Ecology, The Rosenstiel School of Marine, Atmospheric and Earth Science, University of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149-1031, USA
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Willmann K, Moita LF. Physiologic disruption and metabolic reprogramming in infection and sepsis. Cell Metab 2024; 36:927-946. [PMID: 38513649 DOI: 10.1016/j.cmet.2024.02.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 02/12/2024] [Accepted: 02/21/2024] [Indexed: 03/23/2024]
Abstract
Effective responses against severe systemic infection require coordination between two complementary defense strategies that minimize the negative impact of infection on the host: resistance, aimed at pathogen elimination, and disease tolerance, which limits tissue damage and preserves organ function. Resistance and disease tolerance mostly rely on divergent metabolic programs that may not operate simultaneously in time and space. Due to evolutionary reasons, the host initially prioritizes the elimination of the pathogen, leading to dominant resistance mechanisms at the potential expense of disease tolerance, which can contribute to organ failure. Here, we summarize our current understanding of the role of physiological perturbations resulting from infection in immune response dynamics and the metabolic program requirements associated with resistance and disease tolerance mechanisms. We then discuss how insight into the interplay of these mechanisms could inform future research aimed at improving sepsis outcomes and the potential for therapeutic interventions.
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Affiliation(s)
- Katharina Willmann
- Innate Immunity and Inflammation Laboratory, Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - Luis F Moita
- Innate Immunity and Inflammation Laboratory, Instituto Gulbenkian de Ciência, Oeiras, Portugal; Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal.
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Ziegler AC, Haider RS, Hoffmann C, Gräler MH. S1PR3 agonism and S1P lyase inhibition rescue mice in the severe state of experimental sepsis. Biomed Pharmacother 2024; 174:116575. [PMID: 38599060 DOI: 10.1016/j.biopha.2024.116575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 04/03/2024] [Accepted: 04/05/2024] [Indexed: 04/12/2024] Open
Abstract
Sepsis is characterized as life-threatening organ dysfunction caused by a dysregulated host response to an infection. Despite numerous clinical trials that addressed this syndrome, there is still no causative treatment available to dampen its severity. Curtailing the infection at an early stage with anti-infectives is the only effective treatment regime besides intensive care. In search for additional treatment options, we recently discovered the inhibition of the sphingosine 1-phosphate (S1P) lyase and subsequent activation of the S1P receptor type 3 (S1PR3) in pre-conditioning experiments as promising targets for sepsis prevention. Here, we demonstrate that treatment of septic mice with the direct S1P lyase inhibitor C31 or the S1PR3 agonist CYM5541 in the advanced phase of sepsis resulted in a significantly increased survival rate. A single dose of each compound led to a rapid decline of sepsis severity in treated mice and coincided with decreased cytokine release and increased lung barrier function with unaltered bacterial load. The survival benefit of both compounds was completely lost in S1PR3 deficient mice. Treatment of the murine macrophage cell line J774.1 with either C31 or CYM5541 resulted in decreased protein kinase B (Akt) and stress-activated protein kinase/c-Jun N-terminal kinase (SAPK/JNK) phosphorylation without alteration of the mitogen-activated protein kinase (MAPK) p38 and p44/42 phosphorylation. Thus, activation of S1PR3 in the acute phase of sepsis by direct agonism or S1P lyase inhibition dampened Akt and JNK phosphorylation, resulting in decreased cytokine release, improved lung barrier stability, rapid decline of sepsis severity and better survival in mice.
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Affiliation(s)
- Anke C Ziegler
- Department of Anesthesiology and Intensive Care Medicine, Center for Molecular Biomedicine (CMB), Jena University Hospital, Hans-Knöll-Str. 2. Jena D-07745, Germany
| | - Raphael S Haider
- Institut für Molekulare Zellbiologie, CMB - Center for Molecular Biomedicine, Universitätsklinikum Jena, Friedrich-Schiller-Universität Jena, Hans-Knöll-Straße 2, Jena D-07745, Germany; Division of Physiology, Pharmacology and Neuroscience, School of Life Sciences, Queen's Medical Centre, University of Nottingham, Nottingham, UK; Centre of Membrane Protein and Receptors, Universities of Birmingham and Nottingham, Midlands NG2 7AG, UK
| | - Carsten Hoffmann
- Institut für Molekulare Zellbiologie, CMB - Center for Molecular Biomedicine, Universitätsklinikum Jena, Friedrich-Schiller-Universität Jena, Hans-Knöll-Straße 2, Jena D-07745, Germany
| | - Markus H Gräler
- Department of Anesthesiology and Intensive Care Medicine, Center for Molecular Biomedicine (CMB), Jena University Hospital, Hans-Knöll-Str. 2. Jena D-07745, Germany; Center for Sepsis Control and Care, Jena University Hospital, Jena 07740, Germany.
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Zhang W, Liu Y, Liao Y, Zhu C, Zou Z. GPX4, ferroptosis, and diseases. Biomed Pharmacother 2024; 174:116512. [PMID: 38574617 DOI: 10.1016/j.biopha.2024.116512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 03/03/2024] [Accepted: 03/27/2024] [Indexed: 04/06/2024] Open
Abstract
GPX4 (Glutathione peroxidase 4) serves as a crucial intracellular regulatory factor, participating in various physiological processes and playing a significant role in maintaining the redox homeostasis within the body. Ferroptosis, a form of iron-dependent non-apoptotic cell death, has gained considerable attention in recent years due to its involvement in multiple pathological processes. GPX4 is closely associated with ferroptosis and functions as the primary inhibitor of this process. Together, GPX4 and ferroptosis contribute to the pathophysiology of several diseases, including sepsis, nervous system diseases, ischemia reperfusion injury, cardiovascular diseases, and cancer. This review comprehensively explores the regulatory roles and impacts of GPX4 and ferroptosis in the development and progression of these diseases, with the aim of providing insights for identifying potential therapeutic strategies in the future.
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Affiliation(s)
- Wangzheqi Zhang
- School of Anesthesiology, Naval Medical University, 168 Changhai Road, Shanghai 200433, China
| | - Yang Liu
- School of Anesthesiology, Naval Medical University, 168 Changhai Road, Shanghai 200433, China
| | - Yan Liao
- School of Anesthesiology, Naval Medical University, 168 Changhai Road, Shanghai 200433, China
| | - Chenglong Zhu
- School of Anesthesiology, Naval Medical University, 168 Changhai Road, Shanghai 200433, China.
| | - Zui Zou
- School of Anesthesiology, Naval Medical University, 168 Changhai Road, Shanghai 200433, China.
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Gao Y, Liu L, Cui Y, Zhang J, Wu X. The causality of gut microbiota on onset and progression of sepsis: a bi-directional Mendelian randomization analysis. Front Immunol 2024; 15:1266579. [PMID: 38698853 PMCID: PMC11063379 DOI: 10.3389/fimmu.2024.1266579] [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: 07/25/2023] [Accepted: 03/29/2024] [Indexed: 05/05/2024] Open
Abstract
Background Several observational studies have proposed a potential link between gut microbiota and the onset and progression of sepsis. Nevertheless, the causality of gut microbiota and sepsis remains debatable and warrants more comprehensive exploration. Methods We conducted a two-sample Mendelian randomization (MR) analysis to test the causality between gut microbiota and the onset and progression of sepsis. The genome-wide association study (GWAS) summary statistics for 196 bacterial traits were extracted from the MiBioGen consortium, whereas the GWAS summary statistics for sepsis and sepsis-related outcomes came from the UK Biobank. The inverse-variance weighted (IVW) approach was the primary method used to examine the causal association. To complement the IVW method, we utilized four additional MR methods. We performed a series of sensitivity analyses to examine the robustness of the causal estimates. Results We assessed the causality of 196 bacterial traits on sepsis and sepsis-related outcomes. Genus Coprococcus2 [odds ratio (OR) 0.81, 95% confidence interval (CI) (0.69-0.94), p = 0.007] and genus Dialister (OR 0.85, 95% CI 0.74-0.97, p = 0.016) had a protective effect on sepsis, whereas genus Ruminococcaceae UCG011 (OR 1.10, 95% CI 1.01-1.20, p = 0.024) increased the risk of sepsis. When it came to sepsis requiring critical care, genus Anaerostipes (OR 0.49, 95% CI 0.31-0.76, p = 0.002), genus Coprococcus1 (OR 0.65, 95% CI 0.43-1.00, p = 0.049), and genus Lachnospiraceae UCG004 (OR 0.51, 95% CI 0.34-0.77, p = 0.001) emerged as protective factors. Concerning 28-day mortality of sepsis, genus Coprococcus1 (OR 0.67, 95% CI 0.48-0.94, p = 0.020), genus Coprococcus2 (OR 0.48, 95% CI 0.27-0.86, p = 0.013), genus Lachnospiraceae FCS020 (OR 0.70, 95% CI 0.52-0.95, p = 0.023), and genus Victivallis (OR 0.82, 95% CI 0.68-0.99, p = 0.042) presented a protective effect, whereas genus Ruminococcus torques group (OR 1.53, 95% CI 1.00-2.35, p = 0.049), genus Sellimonas (OR 1.25, 95% CI 1.04-1.50, p = 0.019), and genus Terrisporobacter (OR 1.43, 95% CI 1.02-2.02, p = 0.040) presented a harmful effect. Furthermore, genus Coprococcus1 (OR 0.42, 95% CI 0.19-0.92, p = 0.031), genus Coprococcus2 (OR 0.34, 95% CI 0.14-0.83, p = 0.018), and genus Ruminiclostridium6 (OR 0.43, 95% CI 0.22-0.83, p = 0.012) were associated with a lower 28-day mortality of sepsis requiring critical care. Conclusion This MR analysis unveiled a causality between the 21 bacterial traits and sepsis and sepsis-related outcomes. Our findings may help the development of novel microbiota-based therapeutics to decrease the morbidity and mortality of sepsis.
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Affiliation(s)
| | | | | | | | - Xiuying Wu
- Department of Anesthesia, ShengJing Hospital of China Medical University, Shenyang, Liaoning, China
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11
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Jiao M, Zhang Y, Song X, Xu B. The role and mechanism of TXNDC5 in disease progression. Front Immunol 2024; 15:1354952. [PMID: 38629066 PMCID: PMC11019510 DOI: 10.3389/fimmu.2024.1354952] [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: 12/13/2023] [Accepted: 03/19/2024] [Indexed: 04/19/2024] Open
Abstract
Thioredoxin domain containing protein-5 (TXNDC5), also known as endothelial protein-disulfide isomerase (Endo-PDI), is confined to the endoplasmic reticulum through the structural endoplasmic reticulum retention signal (KDEL), is a member of the PDI protein family and is highly expressed in the hypoxic state. TXNDC5 can regulate the rate of disulfide bond formation, isomerization and degradation of target proteins through its function as a protein disulfide isomerase (PDI), thereby altering protein conformation, activity and improving protein stability. Several studies have shown that there is a significant correlation between TXNDC5 gene polymorphisms and genetic susceptibility to inflammatory diseases such as rheumatoid, fibrosis and tumors. In this paper, we detail the expression characteristics of TXNDC5 in a variety of diseases, summarize the mechanisms by which TXNDC5 promotes malignant disease progression, and summarize potential therapeutic strategies to target TXNDC5 for disease treatment.
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Affiliation(s)
- Mingxia Jiao
- Department of Urology, The First Affiliated Hospital of Shandong First Medical University & Shandong Province Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Organ Transplantation and Nephrosis, Shandong Institute of Nephrology, Jinan, Shandong, China
- Shandong Provincial Key Laboratory for Rheumatic Disease and Translational Medicine, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, Shandong, China
| | - Yeyong Zhang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Jinan, Shandong, China
| | - Xie Song
- Shandong Provincial Key Laboratory for Rheumatic Disease and Translational Medicine, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, Shandong, China
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Bing Xu
- Department of Urology, The First Affiliated Hospital of Shandong First Medical University & Shandong Province Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Organ Transplantation and Nephrosis, Shandong Institute of Nephrology, Jinan, Shandong, China
- Shandong Provincial Key Laboratory for Rheumatic Disease and Translational Medicine, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, Shandong, China
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12
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Ortmann W, Such A, Kolaczkowska E. Impact of microparticles released during murine systemic inflammation on macrophage activity and reactive nitrogen species regulation. Immunol Res 2024; 72:299-319. [PMID: 38008825 PMCID: PMC11031483 DOI: 10.1007/s12026-023-09436-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 11/13/2023] [Indexed: 11/28/2023]
Abstract
Microparticles (MPs) packaged with numerous bioactive molecules are essential vehicles in cellular communication in various pathological conditions, including systemic inflammation, Whereas MPs are studied mostly upon isolation, their detection in vivo is limited. Impact of MPs might depend on target cell type and cargo they carry; thus herein, we aimed at verifying MPs' impact on macrophages. Unlike neutrophils, monocytes/macrophages are rather inactive during sepsis, and we hypothesized this might be at least partially controlled by MPs. For the above reasons, we focused on the detection of MPs with intravital microscopy (IVM) and report the presence of putative neutrophil-derived MPs in the vasculature of cremaster muscle of endotoxemic mice. Subsequently, we characterized MPs isolated not only from their blood but also from the peritoneal cavity and observed differences in their size, concentration, and cargo. Such MPs were then used to study their impact on RAW 264.7 macrophage cell line performance (cell viability/activity, cytokines, oxygen, and nitrogen reactive species). Addition of MPs to macrophages with or without co-stimulation with lipopolysaccharide did not affect respiratory burst, somewhat decreased mitochondrial activity but increased inducible nitric oxide synthase (iNOS) expression, and NO production especially in case of plasma-derived MPs. The latter MPs carried more iNOS-controlling ceruloplasmin than those discharged into the peritoneal cavity. We conclude that MPs can be detected in vivo with IVM and their cellular origin identified. They are heterogeneous in nature depending on the site of their release. Consequently, microparticles released during systemic inflammation to various body compartments differentially affect macrophages.
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Affiliation(s)
- Weronika Ortmann
- Laboratory of Experimental Hematology, Institute of Zoology and Biomedical Research, Jagiellonian University, Gronostajowa 9 Street, 30-387, Krakow, Poland
| | - Anna Such
- Laboratory of Experimental Hematology, Institute of Zoology and Biomedical Research, Jagiellonian University, Gronostajowa 9 Street, 30-387, Krakow, Poland
- Doctoral School of Exact and Natural Sciences, Jagiellonian University, Krakow, Poland
| | - Elzbieta Kolaczkowska
- Laboratory of Experimental Hematology, Institute of Zoology and Biomedical Research, Jagiellonian University, Gronostajowa 9 Street, 30-387, Krakow, Poland.
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13
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Varon B, Palacios-Baena ZR, de Kraker MEA, Rodríguez-Baño J, Leibovici L, Paul M. Universal Risk Factors for Mortality in Bloodstream Infections (UNIFORM): a systematic review and Delphi survey. Clin Microbiol Infect 2024; 30:453-461. [PMID: 38182050 DOI: 10.1016/j.cmi.2023.12.030] [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: 09/23/2023] [Revised: 12/27/2023] [Accepted: 12/31/2023] [Indexed: 01/07/2024]
Abstract
BACKGROUND Significant variations in the variables collected in clinical studies focusing on bacteraemia lead to inconsistency in the evaluation of risk factors for mortality. OBJECTIVE We aimed to define a minimum set of risk factors that should be assessed and reported in all studies assessing survival in bacteraemia. STUDY ELIGIBILITY We conducted a systematic review including observational prospective and retrospective cohort studies that assessed all-cause mortality among patients with bacteraemia. We included only studies computing an adjusted analysis for mortality, with >500 participants. EXPOSURES Independently significant risk factors for all-cause, preferably 30-day, mortality. DATA SOURCES PubMed was used to identify eligible studies published between 2000 and 2020. A Delphi survey among experts was used to evaluate and prioritize the factors identified by the systematic review. RISK OF BIAS SIGN checklist complemented by risk of bias assessment of the adjusted analysis. DATA SYNTHESIS Definite universal risk factors were defined as those assessed in >50% of all included studies and significant in >50% of those. Potential universal risk factors were defined as those significant in >50% of studies evaluating the factor and a subgroup analysis was performed for studies of Staphylococcus aureus bacteraemia. RESULTS We included in the systematic review 62 studies, comprising more than 300,000 patients, from which a list of 17 risk factors was derived, whose association with all-cause mortality was statistically significant in most studies. The factors address baseline patient variables, the setting of infection acquisition, factors associated with the specific infection, the inflammatory response at onset of sepsis and management parameters where relevant. There were 14 risk factors for S. aureus bacteraemia. CONCLUSION We identified a minimum set of universal factors to be collected, reported, and assessed, in all future studies evaluating factors associated with mortality in bacteraemia to improve study quality and harmonization.
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Affiliation(s)
- Ben Varon
- Medicine B and H, Rambam Healthcare Campus, Haifa, Israel
| | - Zaira R Palacios-Baena
- Infectious Diseases Division, Hospital Universitario Virgen Macarena, Seville, Spain; Department of Medicine, University of Seville/Biomedicine Institute of Seville (IBiS)/CSIC, Seville, Spain; CIBERINFEC, Instituto de Salud Carlos III, Madrid, Spain
| | - Marlieke E A de Kraker
- Infection Control Program, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - Jesús Rodríguez-Baño
- Infectious Diseases Division, Hospital Universitario Virgen Macarena, Seville, Spain; Department of Medicine, University of Seville/Biomedicine Institute of Seville (IBiS)/CSIC, Seville, Spain; CIBERINFEC, Instituto de Salud Carlos III, Madrid, Spain
| | - Leonard Leibovici
- Research Authority, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel; Faculty of Medicine, Tel-Aviv University, Ramat Aviv, Israel
| | - Mical Paul
- Infectious Diseases Institute, Rambam Healthcare Campus, Haifa, Israel; Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel.
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14
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Caldwell BA, Li L. Epigenetic regulation of innate immune dynamics during inflammation. J Leukoc Biol 2024; 115:589-606. [PMID: 38301269 PMCID: PMC10980576 DOI: 10.1093/jleuko/qiae026] [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: 12/11/2023] [Revised: 01/18/2024] [Accepted: 01/19/2024] [Indexed: 02/03/2024] Open
Abstract
Innate immune cells play essential roles in modulating both immune defense and inflammation by expressing a diverse array of cytokines and inflammatory mediators, phagocytizing pathogens to promote immune clearance, and assisting with the adaptive immune processes through antigen presentation. Rudimentary innate immune "memory" states such as training, tolerance, and exhaustion develop based on the nature, strength, and duration of immune challenge, thereby enabling dynamic transcriptional reprogramming to alter present and future cell behavior. Underlying transcriptional reprogramming are broad changes to the epigenome, or chromatin alterations above the level of DNA sequence. These changes include direct modification of DNA through cytosine methylation as well as indirect modifications through alterations to histones that comprise the protein core of nucleosomes. In this review, we will discuss recent advances in our understanding of how these epigenetic changes influence the dynamic behavior of the innate immune system during both acute and chronic inflammation, as well as how stable changes to the epigenome result in long-term alterations of innate cell behavior related to pathophysiology.
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Affiliation(s)
- Blake A. Caldwell
- Department of Biological Sciences, Virginia Tech, 970 Washington St. SW, Blacksburg, VA 24061-0910, USA
| | - Liwu Li
- Department of Biological Sciences, Virginia Tech, 970 Washington St. SW, Blacksburg, VA 24061-0910, USA
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15
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Yang R, Xiang H, Zheng T. Causal associations between severe mental illness and sepsis: a Mendelian randomization study. Front Psychiatry 2024; 15:1341559. [PMID: 38532990 PMCID: PMC10964346 DOI: 10.3389/fpsyt.2024.1341559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 02/26/2024] [Indexed: 03/28/2024] Open
Abstract
Objective SMI (severe mental illness) has been identified as a risk factor for sepsis in observational studies; however, the causal association between them has yet to be firmly established. We conducted MR (mendelian randomization) to unveil the causal relationship between SMI and sepsis as well as sepsis mortality. Methods GWAS (Genome-wide association) data for major depression and schizophrenia were selected as exposure. GWAS data for sepsis and sepsis mortality were selected as outcome. Genetic variants significantly associated with the exposure (P value<1x10-6) were selected as instruments. We primarily employed the IVW (inverse-variance weighted) method for analysis. Furthermore, we employed Cochrane's Q test to assess heterogeneity and the MR-Egger intercept test to identify horizontal pleiotropy. Results We selected 108 SNPs (single nucleotide polymorphism) used to predict major depression and 260 SNPs that predicted schizophrenia. Genetically predicted major depression was suggestively linked to a higher sepsis risk (OR=1.13, 95%CI 1.02-1.26, P=0.023). In contrast, MR analysis did not find an association between schizophrenia and sepsis risk (OR=1.00, 95%CI 0.97-1.04, P=0.811). Furthermore, no significant causal evidence was found for genetically predicted SMI in sepsis mortality. Moreover, no heterogeneity and horizontal pleiotropy were detected. Conclusion Our research revealed a suggestive association between genetically predicted major depression and an elevated risk of sepsis in individuals of European ancestry. This finding can serve as a reminder for clinicians to consider the possibility of subsequent infection and sepsis in depressive patients, which may help reduce the incidence of sepsis in individuals with depression.
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Affiliation(s)
- Ruhao Yang
- Department of Emergency, Renmin Hospital of Wuhan University, Wuhan, China
| | - Hongyu Xiang
- Department of Rheumatology and Immunology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Ting Zheng
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, China
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16
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Wu Y, Caldwell B, Wang J, Zhang Y, Li L. Alleviation of monocyte exhaustion by BCG derivative mycolic acid. iScience 2024; 27:108978. [PMID: 38323001 PMCID: PMC10845070 DOI: 10.1016/j.isci.2024.108978] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/27/2023] [Accepted: 01/16/2024] [Indexed: 02/08/2024] Open
Abstract
Monocyte exhaustion with sustained pathogenic inflammation and immune-suppression, a hallmark of sepsis resulting from systemic infections, presents a challenge with limited therapeutic solutions. This study identified Methoxy-Mycolic Acid (M-MA), a branched mycolic acid derived from Mycobacterium bovis Bacillus Calmette-Guérin (BCG), as a potent agent in alleviating monocyte exhaustion and restoring immune homeostasis. Co-treatment of monocytes with M-MA effectively blocked the expansion of Ly6Chi/CD38hi/PD-L1hi monocytes induced by LPS challenges and restored the expression of immune-enhancing CD86. M-MA treatment restored mitochondrial functions of exhausted monocytes and alleviated their suppressive activities on co-cultured T cells. Independent of TREM2, M-MA blocks Src-STAT1-mediated inflammatory polarization and reduces the production of immune suppressors TAX1BP1 and PLAC8. Whole genome methylation analyses revealed M-MA's ability to erase the methylation memory of exhausted monocytes, particularly restoring Plac8 methylation. Together, our data suggest M-MA as an effective agent in restoring monocyte homeostasis with a therapeutic potential for treating sepsis.
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Affiliation(s)
- Yajun Wu
- Department of Biological Sciences, Virginia Tech; Blacksburg, VA 24061-0910, USA
| | - Blake Caldwell
- Department of Biological Sciences, Virginia Tech; Blacksburg, VA 24061-0910, USA
| | - Jing Wang
- Department of Biological Sciences, Virginia Tech; Blacksburg, VA 24061-0910, USA
| | - Yao Zhang
- Department of Biological Sciences, Virginia Tech; Blacksburg, VA 24061-0910, USA
| | - Liwu Li
- Department of Biological Sciences, Virginia Tech; Blacksburg, VA 24061-0910, USA
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17
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Reddy H, Javvaji CK, Malali S, Kumar S, Acharya S, Toshniwal S. Navigating the Cytokine Storm: A Comprehensive Review of Chemokines and Cytokines in Sepsis. Cureus 2024; 16:e54275. [PMID: 38496165 PMCID: PMC10944554 DOI: 10.7759/cureus.54275] [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: 12/25/2023] [Accepted: 02/11/2024] [Indexed: 03/19/2024] Open
Abstract
This comprehensive review thoroughly explores the intricate relationship between chemokines, cytokines, and the cytokine storm in sepsis, offering a nuanced understanding of the molecular mechanisms underpinning this life-threatening syndrome. Beginning with examining sepsis stages and immune response dynamics, the review emphasizes the dysregulation leading to the cytokine storm, where pro- and anti-inflammatory cytokines disrupt the delicate immune equilibrium. Delving into chemokines, the discussion encompasses subfamilies, receptors, and functions, highlighting their critical roles in immune cell migration and activation during sepsis. The implications for clinical practice are substantial, suggesting avenues for targeted diagnostics and therapeutic interventions. The review identifies areas for future research, including the search for novel biomarkers, deeper insights into cytokine regulation, and the pursuit of personalized medicine approaches. This comprehensive exploration aims to guide clinicians, researchers, and policymakers in navigating the complexities of sepsis, fostering a foundation for transformative advancements in understanding and managing this formidable clinical challenge.
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Affiliation(s)
- Harshitha Reddy
- Internal Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Chaitanya Kumar Javvaji
- Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Suprit Malali
- Internal Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Sunil Kumar
- Internal Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Sourya Acharya
- Internal Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Saket Toshniwal
- Internal Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
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18
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Olney KC, de Ávila C, Todd KT, Tallant LE, Barnett JH, Gibson KA, Hota P, Pandiane AS, Durgun PC, Serhan M, Wang R, Lind ML, Forzani E, Gades NM, Thomas LF, Fryer JD. Commonly disrupted pathways in brain and kidney in a pig model of systemic endotoxemia. J Neuroinflammation 2024; 21:9. [PMID: 38178237 PMCID: PMC10765757 DOI: 10.1186/s12974-023-03002-6] [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: 07/03/2023] [Accepted: 12/19/2023] [Indexed: 01/06/2024] Open
Abstract
Sepsis is a life-threatening state that arises due to a hyperactive inflammatory response stimulated by infection and rarely other insults (e.g., non-infections tissue injury). Although changes in several proinflammatory cytokines and signals are documented in humans and small animal models, far less is known about responses within affected tissues of large animal models. We sought to understand the changes that occur during the initial stages of inflammation by administering intravenous lipopolysaccharide (LPS) to Yorkshire pigs and assessing transcriptomic alterations in the brain, kidney, and whole blood. Robust transcriptional alterations were found in the brain, with upregulated responses enriched in inflammatory pathways and downregulated responses enriched in tight junction and blood vessel functions. Comparison of the inflammatory response in the pig brain to a similar mouse model demonstrated some overlapping changes but also numerous differences, including oppositely dysregulated genes between species. Substantial changes also occurred in the kidneys following LPS with several enriched upregulated pathways (cytokines, lipids, unfolded protein response, etc.) and downregulated gene sets (tube morphogenesis, glomerulus development, GTPase signal transduction, etc.). We also found significant dysregulation of genes in whole blood that fell into several gene ontology categories (cytokines, cell cycle, neutrophil degranulation, etc.). We observed a strong correlation between the brain and kidney responses, with significantly shared upregulated pathways (cytokine signaling, cell death, VEGFA pathways) and downregulated pathways (vasculature and RAC1 GTPases). In summary, we have identified a core set of shared genes and pathways in a pig model of systemic inflammation.
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Affiliation(s)
- Kimberly C Olney
- Department of Neuroscience, Mayo Clinic, 13400 East Shea Boulevard, Scottsdale, AZ, USA
| | - Camila de Ávila
- Department of Neuroscience, Mayo Clinic, 13400 East Shea Boulevard, Scottsdale, AZ, USA
| | - Kennedi T Todd
- Department of Neuroscience, Mayo Clinic, 13400 East Shea Boulevard, Scottsdale, AZ, USA
| | - Lauren E Tallant
- Department of Neuroscience, Mayo Clinic, 13400 East Shea Boulevard, Scottsdale, AZ, USA
- Mayo Clinic Graduate School of Biomedical Sciences, Scottsdale, AZ, USA
| | - J Hudson Barnett
- Department of Neuroscience, Mayo Clinic, 13400 East Shea Boulevard, Scottsdale, AZ, USA
- Mayo Clinic Graduate School of Biomedical Sciences, Scottsdale, AZ, USA
- MD/PhD Training Program, Mayo Clinic, Scottsdale, AZ, USA
| | - Katelin A Gibson
- Department of Neuroscience, Mayo Clinic, 13400 East Shea Boulevard, Scottsdale, AZ, USA
| | - Piyush Hota
- Division of Nephrology & Hypertension, Mayo Clinic, 13400 East Shea Boulevard, Scottsdale, AZ, USA
| | | | - Pinar Cay Durgun
- School of Engineering of Matter, Transport & Energy, Arizona State University, Tempe, AZ, USA
| | - Michael Serhan
- School of Engineering of Matter, Transport & Energy, Arizona State University, Tempe, AZ, USA
| | - Ran Wang
- School of Engineering of Matter, Transport & Energy, Arizona State University, Tempe, AZ, USA
| | - Mary Laura Lind
- School of Engineering of Matter, Transport & Energy, Arizona State University, Tempe, AZ, USA
| | - Erica Forzani
- School of Engineering of Matter, Transport & Energy, Arizona State University, Tempe, AZ, USA
| | - Naomi M Gades
- Department of Comparative Medicine, Mayo Clinic, Scottsdale, AZ, USA
| | - Leslie F Thomas
- Division of Nephrology & Hypertension, Mayo Clinic, 13400 East Shea Boulevard, Scottsdale, AZ, USA.
| | - John D Fryer
- Department of Neuroscience, Mayo Clinic, 13400 East Shea Boulevard, Scottsdale, AZ, USA.
- Mayo Clinic Graduate School of Biomedical Sciences, Scottsdale, AZ, USA.
- MD/PhD Training Program, Mayo Clinic, Scottsdale, AZ, USA.
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19
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Liang P, Wu Y, Qu S, Younis M, Wang W, Wu Z, Huang X. Exploring the biomarkers and potential therapeutic drugs for sepsis via integrated bioinformatic analysis. BMC Infect Dis 2024; 24:32. [PMID: 38166628 PMCID: PMC10763157 DOI: 10.1186/s12879-023-08883-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 12/08/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND Sepsis is a life-threatening condition caused by an excessive inflammatory response to an infection, associated with high mortality. However, the regulatory mechanism of sepsis remains unclear. RESULTS In this study, bioinformatics analysis revealed the novel key biomarkers associated with sepsis and potential regulators. Three public datasets (GSE28750, GSE57065 and GSE95233) were employed to recognize the differentially expressed genes (DEGs). Taking the intersection of DEGs from these three datasets, GO and KEGG pathway enrichment analysis revealed 537 shared DEGs and their biological functions and pathways. These genes were mainly enriched in T cell activation, differentiation, lymphocyte differentiation, mononuclear cell differentiation, and regulation of T cell activation based on GO analysis. Further, pathway enrichment analysis revealed that these DEGs were significantly enriched in Th1, Th2 and Th17 cell differentiation. Additionally, five hub immune-related genes (CD3E, HLA-DRA, IL2RB, ITK and LAT) were identified from the protein-protein interaction network, and sepsis patients with higher expression of hub genes had a better prognosis. Besides, 14 drugs targeting these five hub related genes were revealed on the basis of the DrugBank database, which proved advantageous for treating immune-related diseases. CONCLUSIONS These results strengthen the new understanding of sepsis development and provide a fresh perspective into discriminating the candidate biomarkers for predicting sepsis as well as identifying new drugs for treating sepsis.
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Affiliation(s)
- Pingping Liang
- Foshan Fourth People's Hospital, Guangdong Province, Foshan, 528041, China
- Center for Infection and Immunity and Guangdong Provincial Engineering Research Center of Molecular Imaging, the Fifth Affiliated Hospital of Sun Yat-Sen University, Guangdong Province, Zhuhai, 519000, China
| | - Yongjian Wu
- Center for Infection and Immunity and Guangdong Provincial Engineering Research Center of Molecular Imaging, the Fifth Affiliated Hospital of Sun Yat-Sen University, Guangdong Province, Zhuhai, 519000, China
| | - Siying Qu
- Department of Clinical Laboratory, Zhuhai Hospital of Integrated Traditional Chinese and Western Medicine, The Second People's Hospital of Zhuhai, Guangdong Province, Zhuhai, 519020, China
| | - Muhammad Younis
- Foshan Fourth People's Hospital, Guangdong Province, Foshan, 528041, China
- Center for Infection and Immunity and Guangdong Provincial Engineering Research Center of Molecular Imaging, the Fifth Affiliated Hospital of Sun Yat-Sen University, Guangdong Province, Zhuhai, 519000, China
| | - Wei Wang
- Foshan Fourth People's Hospital, Guangdong Province, Foshan, 528041, China
| | - Zhilong Wu
- Foshan Fourth People's Hospital, Guangdong Province, Foshan, 528041, China.
| | - Xi Huang
- Foshan Fourth People's Hospital, Guangdong Province, Foshan, 528041, China.
- Center for Infection and Immunity and Guangdong Provincial Engineering Research Center of Molecular Imaging, the Fifth Affiliated Hospital of Sun Yat-Sen University, Guangdong Province, Zhuhai, 519000, China.
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20
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Luz IS, Takaya R, Ribeiro DG, Castro MS, Fontes W. Proteomics: Unraveling the Cross Talk Between Innate Immunity and Disease Pathophysiology, Diagnostics, and Treatment Options. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1443:221-242. [PMID: 38409424 DOI: 10.1007/978-3-031-50624-6_12] [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: 02/28/2024]
Abstract
Inflammation is crucial in diseases, and proteins play a key role in the interplay between innate immunity and pathology. This review explores how proteomics helps understanding this relationship, focusing on diagnosis and treatment. We explore the dynamic innate response and the significance of proteomic techniques in deciphering the complex network of proteins involved in prevalent diseases, including infections, cancer, autoimmune and neurodegenerative disorders. Proteomics identifies key proteins in host-pathogen interactions, shedding light on infection mechanisms and inflammation. These discoveries hold promise for diagnostic tools, therapies, and vaccines. In cancer research, proteomics reveals innate signatures associated with tumor development, immune evasion, and therapeutic response. Additionally, proteomic analysis has unveiled autoantigens and dysregulation of the innate immune system in autoimmunity, offering opportunities for early diagnosis, disease monitoring, and new therapeutic targets. Moreover, proteomic analysis has identified altered protein expression patterns in neurodegenerative diseases like Alzheimer's and Parkinson's, providing insights into potential therapeutic strategies. Proteomics of the innate immune system provides a comprehensive understanding of disease mechanisms, identifies biomarkers, and enables effective interventions in various diseases. Despite still in its early stages, this approach holds great promise to revolutionize innate immunity research and significantly improve patient outcomes across a wide range of diseases.
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Affiliation(s)
- Isabelle Souza Luz
- Laboratory of Protein Chemistry and Biochemistry, Department of Cell Biology, University of Brasilia, Brasília, Federal District, Brazil
| | - Raquel Takaya
- Laboratory of Protein Chemistry and Biochemistry, Department of Cell Biology, University of Brasilia, Brasília, Federal District, Brazil
| | - Daiane Gonzaga Ribeiro
- Laboratory of Protein Chemistry and Biochemistry, Department of Cell Biology, University of Brasilia, Brasília, Federal District, Brazil
| | - Mariana S Castro
- Laboratory of Protein Chemistry and Biochemistry, Department of Cell Biology, University of Brasilia, Brasília, Federal District, Brazil
| | - Wagner Fontes
- Laboratory of Protein Chemistry and Biochemistry, Department of Cell Biology, University of Brasilia, Brasília, Federal District, Brazil.
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21
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Lee SJ, Kim D, Ann HW, Han M, Lee JA, Lee Y, Ahn S, Seo HW, Kim JH, Ahn JY, Jeong SJ, Ku NS, Yeom JS, Ryu CM, Choi JY. DECIPHERING GUT MICROBIOTA IN PATIENTS WITH SEVERE SEPSIS AND SEPTIC SHOCK. Shock 2024; 61:28-33. [PMID: 37878472 DOI: 10.1097/shk.0000000000002241] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
ABSTRACT Introduction: Gut microbiota dysbiosis is associated with susceptibility to sepsis and poor outcomes. However, changes to the intestinal microbiota during sepsis and their value as biomarkers are unclear. In this study, we compared the intestinal microbiota of patients with sepsis and healthy controls. Methods: Stool was collected from patients with sepsis (subdivided according to mortality) and controls. Microbiome diversity and composition were analyzed by 16S rRNA gene pyrosequencing. The α-diversity of the intestinal microbiome was determined using operational taxonomic unit counts and the Chao1, Shannon, and ACE indices. Adjusted Cox regression analyses assessed 6-month mortality risk factors. Results: Fifty-nine patients (14 in-hospital deaths) and 29 healthy controls were enrolled. Operational taxonomic unit counts and Chao1 and ACE indices were lower in the nonsurvivor than in the other groups. The controls showed a higher Shannon and lower Simpson index than did the sepsis group. The genus Blautia was more abundant in controls than in the sepsis group, and Faecalibacterium less abundant in the nonsurvivor than in the other groups. Regression analysis associated low Shannon index with 6-month mortality. Conclusions: Survivors of sepsis, nonsurvivors, and healthy controls have different gut microbiomes, and a low Shannon index is a risk factor for 6-month mortality.
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Affiliation(s)
| | - Dajeong Kim
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Hea Won Ann
- Division of Infectious Diseases, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Min Han
- Division of Infectious Diseases, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jung Ah Lee
- Division of Infectious Diseases, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Yongseop Lee
- Division of Infectious Diseases, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sangmin Ahn
- Division of Infectious Diseases, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hwi Won Seo
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Jung Ho Kim
- Division of Infectious Diseases, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jin Young Ahn
- Division of Infectious Diseases, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Su Jin Jeong
- Division of Infectious Diseases, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Nam Su Ku
- Division of Infectious Diseases, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Joon-Sup Yeom
- Division of Infectious Diseases, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Choong-Min Ryu
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Jun Yong Choi
- Division of Infectious Diseases, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
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22
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Kim B, Yu JE, Yeo IJ, Son DJ, Lee HP, Roh YS, Lim KH, Yun J, Park H, Han SB, Hong JT. (E)-2-methoxy-4-(3-(4-methoxyphenyl)prop-1-en-1-yl)phenol alleviates inflammatory responses in LPS-induced mice liver sepsis through inhibition of STAT3 phosphorylation. Int Immunopharmacol 2023; 125:111124. [PMID: 37977740 DOI: 10.1016/j.intimp.2023.111124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 10/13/2023] [Accepted: 10/20/2023] [Indexed: 11/19/2023]
Abstract
Sepsis is a life-threatening disease with limited treatment options, and the inflammatory process represents an important factor affecting its progression. Many studies have demonstrated the critical roles of signal transducer and activator of transcription 3 (STAT3) in sepsis pathophysiology and pro-inflammatory responses. Inhibition of STAT3 activity may therefore represent a promising treatment option for sepsis. We here used a mouse model to demonstrate that (E)-2-methoxy-4-(3-(4-methoxyphenyl)prop-1-en-1-yl)phenol (MMPP) treatment prevented the liver sepsis-related mortality induced by 30 mg/kg lipopolysaccharide (LPS) treatment and reduced LPS-induced increase in alanine transaminase, aspartate transaminase, and lactate dehydrogenase levels, all of which are markers of liver sepsis progression. These recovery effects were associated with decreased LPS-induced STAT3, p65, and JAK1 phosphorylation and proinflammatory cytokine (interleukin 1 beta, interleukin 6, and tumor necrosis factor alpha) level; expression of cyclooxygenase-2 and induced nitric oxide synthase were also reduced by MMPP. In an in vitro study using the normal liver cell line THLE-2, MMPP treatment prevented the LPS-induced increase of STAT3, p65, and JAK1 phosphorylation and inflammatory protein expression in a dose-dependent manner, and this effect was enhanced by combination treatment with MMPP and STAT3 inhibitor. The results clearly indicate that MMPP treatment prevents LPS-induced mortality by inhibiting the inflammatory response via STAT3 activity inhibition. Thus, MMPP represents a novel agent for alleviating LPS-induced liver sepsis.
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Affiliation(s)
- Boyoung Kim
- College of Pharmacy & Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-21, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 28160, Republic of Korea.
| | - Ji Eun Yu
- College of Pharmacy & Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-21, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 28160, Republic of Korea.
| | - In Jun Yeo
- College of Pharmacy & Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-21, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 28160, Republic of Korea.
| | - Dong Ju Son
- College of Pharmacy & Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-21, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 28160, Republic of Korea.
| | - Hee Pom Lee
- College of Pharmacy & Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-21, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 28160, Republic of Korea.
| | - Yoon Seok Roh
- College of Pharmacy & Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-21, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 28160, Republic of Korea.
| | - Key-Hwan Lim
- College of Pharmacy & Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-21, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 28160, Republic of Korea.
| | - Jaesuk Yun
- College of Pharmacy & Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-21, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 28160, Republic of Korea.
| | - Hanseul Park
- College of Pharmacy & Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-21, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 28160, Republic of Korea.
| | - Sang Bae Han
- College of Pharmacy & Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-21, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 28160, Republic of Korea.
| | - Jin Tae Hong
- College of Pharmacy & Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-21, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 28160, Republic of Korea.
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23
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Chen JJ, Lai PC, Lee TH, Huang YT. Blood Purification for Adult Patients With Severe Infection or Sepsis/Septic Shock: A Network Meta-Analysis of Randomized Controlled Trials. Crit Care Med 2023; 51:1777-1789. [PMID: 37470680 PMCID: PMC10645104 DOI: 10.1097/ccm.0000000000005991] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
OBJECTIVES This study aimed to conduct a comprehensive and updated systematic review with network meta-analysis (NMA) to assess the outcome benefits of various blood purification modalities for adult patients with severe infection or sepsis. DATA SOURCES We conducted a search of PubMed, MEDLINE, clinical trial registries, Cochrane Library, and Embase databases with no language restrictions. STUDY SELECTION Only randomized controlled trials (RCTs) were selected. DATA EXTRACTION The primary outcome was overall mortality. The secondary outcomes were the length of mechanical ventilation (MV) days and ICU stay, incidence of acute kidney injury (AKI), and kidney replacement therapy requirement. DATA SYNTHESIS We included a total of 60 RCTs with 4,595 participants, comparing 16 blood purification modalities with 17 interventions. Polymyxin-B hemoperfusion (relative risk [RR]: 0.70; 95% CI, 0.57-0.86) and plasma exchange (RR: 0.61; 95% CI, 0.42-0.91) were associated with low mortality (very low and low certainty of evidence, respectively). Because of the presence of high clinical heterogeneity and intransitivity, the potential benefit of polymyxin-B hemoperfusion remained inconclusive. The analysis of secondary outcomes was limited by the scarcity of available studies. HA330 with high-volume continuous venovenous hemofiltration (CVVH), HA330, and standard-volume CVVH were associated with shorter ICU stay. HA330 with high-volume CVVH, HA330, and standard-volume CVVH were beneficial in reducing MV days. None of the interventions showed a significant reduction in the incidence of AKI or the need for kidney replacement therapy. CONCLUSIONS Our NMA suggests that plasma exchange and polymyxin-B hemoperfusion may provide potential benefits for adult patients with severe infection or sepsis/septic shock when compared with standard care alone, but most comparisons were based on low or very low certainty evidence. The therapeutic effect of polymyxin-B hemoperfusion remains uncertain. Further RCTs are required to identify the specific patient population that may benefit from extracorporeal blood purification.
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Affiliation(s)
- Jia-Jin Chen
- Department of Nephrology, Chang Gung Memorial Hospital, Linkou Main Branch, Taoyuan City, Taiwan
| | - Pei-Chun Lai
- Education Center, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | | | - Yen-Ta Huang
- Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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24
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Wang W, He Z. Gasdermins in sepsis. Front Immunol 2023; 14:1203687. [PMID: 38022612 PMCID: PMC10655013 DOI: 10.3389/fimmu.2023.1203687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 10/12/2023] [Indexed: 12/01/2023] Open
Abstract
Sepsis is a hyper-heterogeneous syndrome in which the systemic inflammatory response persists throughout the course of the disease and the inflammatory and immune responses are dynamically altered at different pathogenic stages. Gasdermins (GSDMs) proteins are pore-forming executors in the membrane, subsequently mediating the release of pro-inflammatory mediators and inflammatory cell death. With the increasing research on GSDMs proteins and sepsis, it is believed that GSDMs protein are one of the most promising therapeutic targets in sepsis in the future. A more comprehensive and in-depth understanding of the functions of GSDMs proteins in sepsis is important to alleviate the multi-organ dysfunction and reduce sepsis-induced mortality. In this review, we focus on the function of GSDMs proteins, the molecular mechanism of GSDMs involved in sepsis, and the regulatory mechanism of GSDMs-mediated signaling pathways, aiming to provide novel ideas and therapeutic strategies for the diagnosis and treatment of sepsis.
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Affiliation(s)
- Wenhua Wang
- Department of Intensive Care Unit, the Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhihui He
- Department of Intensive Care Unit, the Third Xiangya Hospital, Central South University, Changsha, Hunan, China
- Sepsis Translational Medicine Key Laboratory of Hunan Province, Central South University, Changsha, Hunan, China
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25
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You J, Bi X, Zhang K, Xie D, Chai Y, Wen S, Xian Y, Fan M, Xu W, Li M, Yuan X. Causal associations between gut microbiota and sepsis: A two-sample Mendelian randomization study. Eur J Clin Invest 2023; 53:e14064. [PMID: 37464539 DOI: 10.1111/eci.14064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 06/09/2023] [Accepted: 07/02/2023] [Indexed: 07/20/2023]
Abstract
BACKGROUND Targeting the gut microbiota may become a new therapeutic to prevent and treat sepsis. Nonetheless, the causal relationship between specific intestinal flora and sepsis is still unclear. METHODS A two-sample Mendelian randomization study was performed using the summary statistics of gut microbiota from the largest available genome-wide association study (n = 18,340). The summary statistics of sepsis were obtained from the UK Biobank (n = 486,484). Inverse-variance weighted, weighted median and MR-Egger were used to examine the causal association between gut microbiota and sepsis. Cochrane's Q test, MR-Egger intercept test, MR-PRESSO Global test and Rucker's Q'-test were used for sensitivity analyses. The leave-one method was used for testing the stability of MR results, and Bonferroni-corrected was used to test the strength of the causal relationship between exposure and outcome. RESULTS Nine intestinal microflora were found causally associated with sepsis, and 11 intestinal microflora were causally associated with 28-day death in sepsis. Among them, Order Victivallales had a strong causality with lower risk of sepsis (OR = 0.86, 95% CI: 0.78-0.94, p = .00165) and lower 28-day mortality of sepsis (OR = 0.68, 95% CI: 0.53-0.87, p = .00179) after Bonferroni-corrected test. No pleiotropy was detected. CONCLUSIONS Through the two-sample MR analysis, we identified the specific intestinal flora that had a causal relationship with the risk and prognosis of sepsis at the level of gene prediction, which may provide helpful biomarkers for early disease diagnosis and potential therapeutic targets for sepsis.
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Affiliation(s)
- Jingya You
- Department of General Intensive Care Unit, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xiaogang Bi
- Department of General Intensive Care Unit, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Kouxing Zhang
- Department of General Intensive Care Unit, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Dan Xie
- Department of General Intensive Care Unit, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yiwen Chai
- Department of General Intensive Care Unit, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Sha Wen
- Department of Critical Care Medicine, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, China
| | - Ying Xian
- Department of General Intensive Care Unit, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Min Fan
- Department of General Intensive Care Unit, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Wen Xu
- Department of General Intensive Care Unit, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Mingliang Li
- Department of General Intensive Care Unit, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xiaofeng Yuan
- Department of General Intensive Care Unit, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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26
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Song Y, Zhang R, Qin H, Xu W, Sun J, Jiang J, Ye Y, Gao J, Li H, Huang W, Liu K, Hu Y, Peng F, Tu Y. Micromotor-Enabled Active Hydrogen and Tobramycin Delivery for Synergistic Sepsis Therapy. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2303759. [PMID: 37818787 PMCID: PMC10667834 DOI: 10.1002/advs.202303759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/08/2023] [Indexed: 10/13/2023]
Abstract
Sepsis is a highly heterogeneous syndrome normally characterized by bacterial infection and dysregulated systemic inflammatory response that leads to multiple organ failure and death. Single anti-inflammation or anti-infection treatment exhibits limited survival benefit for severe cases. Here a biodegradable tobramycin-loaded magnesium micromotor (Mg-Tob motor) is successfully developed as a potential hydrogen generator and active antibiotic deliverer for synergistic therapy of sepsis. The peritoneal fluid of septic mouse provides an applicable space for Mg-water reaction. Hydrogen generated sustainably and controllably from the motor interface propels the motion to achieve active drug delivery along with attenuating hyperinflammation. The developed Mg-Tob motor demonstrates efficient protection from anti-inflammatory and antibacterial activity both in vitro and in vivo. Importantly, it prevents multiple organ failure and significantly improves the survival rate up to 87.5% in a high-grade sepsis model with no survival, whereas only about half of mice survive with the individual therapies. This micromotor displays the superior therapeutic effect of synergistic hydrogen-chemical therapy against sepsis, thus holding great promise to be an innovative and translational drug delivery system to treat sepsis or other inflammation-related diseases in the near future.
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Affiliation(s)
- Yanzhen Song
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug ScreeningSchool of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou510515China
| | - Ruotian Zhang
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug ScreeningSchool of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou510515China
| | - Hanfeng Qin
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug ScreeningSchool of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou510515China
| | - Wenxin Xu
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug ScreeningSchool of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou510515China
| | - Jia Sun
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug ScreeningSchool of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou510515China
| | - Jiamiao Jiang
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug ScreeningSchool of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou510515China
| | - Yicheng Ye
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug ScreeningSchool of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou510515China
| | - Junbin Gao
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug ScreeningSchool of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou510515China
| | - Huaan Li
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug ScreeningSchool of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou510515China
| | - Weichang Huang
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug ScreeningSchool of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou510515China
| | - Kun Liu
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug ScreeningSchool of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou510515China
| | - Yunrui Hu
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug ScreeningSchool of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou510515China
| | - Fei Peng
- School of Materials Science and EngineeringSun Yat‐Sen UniversityGuangzhou510275China
| | - Yingfeng Tu
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug ScreeningSchool of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou510515China
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27
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Lin X, Abdalla M, Yang J, Liu L, Fu Y, Zhang Y, Yang S, Yu H, Ge Y, Zhang S, Kang G, Dang W, Jiang Q, Wang Y, Gai Z. Relationship between gut microbiota dysbiosis and immune indicator in children with sepsis. BMC Pediatr 2023; 23:516. [PMID: 37845615 PMCID: PMC10578006 DOI: 10.1186/s12887-023-04349-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 10/04/2023] [Indexed: 10/18/2023] Open
Abstract
Sepsis is a life-threatening multiple-organ injury caused by disordered host immune response to microbial infection. However, the correlation between gut microbiota dysbiosis and immune indicators remains unexplored. To address this gap in knowledge, we carried out 16 S rDNA sequencing, analyzed clinical fecal samples from children with sepsis (n = 30) and control children (n = 25), and obtained immune indicators, including T cell subtypes (CD3+, CD3+CD4+, CD3+CD8+, and CD4/CD8), NK cells, cytokines (IL-2, IL-4, IL-6, IL-10, TNF-α and IFN-γ), and immunoglobulin indices (IgA, IgE, IgM and IgG). In addition, we analyzed the correlation between gut microbiota dysbiosis and immune indicators, and evaluated the clinical discriminatory power of discovered bacterial biomarkers. We found that children with sepsis exhibited gut bacterial dysbiosis and low alpha diversity. The Spearman's rank correlation coefficient suggested that Rhodococcus erythropolis had a significantly positive correlation with IFN-γ and CD3+ T cells. Klebsiella pneumoniae and Streptococcus mitis were significantly correlated with NK cells. Bacteroides uniformis was significantly positively correlated with IgM and erythrocyte sedimentation rate, and Eubacterium eligens was significantly positively correlated with IL-4 and CD3+CD8+ T cells. The biomarkers discovered in this study had strong discriminatory power. These changes in the gut microbiome may be closely related to immunologic dysfunction and to the development or exacerbation of sepsis. However, a large sample size is required for verification.
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Affiliation(s)
- Xia Lin
- Children's Hospital Affiliated to Shandong University, Jinan, 250022, China
- Jinan Children's Hospital, Jinan, 250022, China
- Shandong Provincial Clinical Research Center for Children's Health and Disease, Jinan, Shandong, 250200, China
| | - Mohnad Abdalla
- Children's Hospital Affiliated to Shandong University, Jinan, 250022, China
- Jinan Children's Hospital, Jinan, 250022, China
- Shandong Provincial Clinical Research Center for Children's Health and Disease, Jinan, Shandong, 250200, China
| | - Junjie Yang
- College of Life Science, Qilu Normal University, Jinan, Shandong, 250200, China
| | - Lei Liu
- Children's Hospital Affiliated to Shandong University, Jinan, 250022, China
- Jinan Children's Hospital, Jinan, 250022, China
- Shandong Provincial Clinical Research Center for Children's Health and Disease, Jinan, Shandong, 250200, China
| | - Yali Fu
- Children's Hospital Affiliated to Shandong University, Jinan, 250022, China
- Jinan Children's Hospital, Jinan, 250022, China
- Shandong Provincial Clinical Research Center for Children's Health and Disease, Jinan, Shandong, 250200, China
| | - Yanli Zhang
- Children's Hospital Affiliated to Shandong University, Jinan, 250022, China
- Jinan Children's Hospital, Jinan, 250022, China
- Shandong Provincial Clinical Research Center for Children's Health and Disease, Jinan, Shandong, 250200, China
| | - Shuchun Yang
- Children's Hospital Affiliated to Shandong University, Jinan, 250022, China
- Jinan Children's Hospital, Jinan, 250022, China
- Shandong Provincial Clinical Research Center for Children's Health and Disease, Jinan, Shandong, 250200, China
| | - Han Yu
- Children's Hospital Affiliated to Shandong University, Jinan, 250022, China
- Jinan Children's Hospital, Jinan, 250022, China
- Shandong Provincial Clinical Research Center for Children's Health and Disease, Jinan, Shandong, 250200, China
| | - Yongsheng Ge
- Children's Hospital Affiliated to Shandong University, Jinan, 250022, China
- Jinan Children's Hospital, Jinan, 250022, China
- Shandong Provincial Clinical Research Center for Children's Health and Disease, Jinan, Shandong, 250200, China
| | - Sufang Zhang
- Children's Hospital Affiliated to Shandong University, Jinan, 250022, China
- Jinan Children's Hospital, Jinan, 250022, China
- Shandong Provincial Clinical Research Center for Children's Health and Disease, Jinan, Shandong, 250200, China
| | - Guiyun Kang
- Children's Hospital Affiliated to Shandong University, Jinan, 250022, China
- Jinan Children's Hospital, Jinan, 250022, China
- Shandong Provincial Clinical Research Center for Children's Health and Disease, Jinan, Shandong, 250200, China
| | - Wei Dang
- Children's Hospital Affiliated to Shandong University, Jinan, 250022, China
- Jinan Children's Hospital, Jinan, 250022, China
- Shandong Provincial Clinical Research Center for Children's Health and Disease, Jinan, Shandong, 250200, China
| | - Qin Jiang
- Children's Hospital Affiliated to Shandong University, Jinan, 250022, China.
- Jinan Children's Hospital, Jinan, 250022, China.
- Shandong Provincial Clinical Research Center for Children's Health and Disease, Jinan, Shandong, 250200, China.
| | - Ying Wang
- Children's Hospital Affiliated to Shandong University, Jinan, 250022, China.
- Jinan Children's Hospital, Jinan, 250022, China.
- Shandong Provincial Clinical Research Center for Children's Health and Disease, Jinan, Shandong, 250200, China.
| | - Zhongtao Gai
- Children's Hospital Affiliated to Shandong University, Jinan, 250022, China
- Jinan Children's Hospital, Jinan, 250022, China
- Shandong Provincial Clinical Research Center for Children's Health and Disease, Jinan, Shandong, 250200, China
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28
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Wen Y, Liu Y, Liu W, Liu W, Dong J, Liu Q, Hao H, Ren H. Research progress on the activation mechanism of NLRP3 inflammasome in septic cardiomyopathy. Immun Inflamm Dis 2023; 11:e1039. [PMID: 37904696 PMCID: PMC10549821 DOI: 10.1002/iid3.1039] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 09/15/2023] [Accepted: 09/20/2023] [Indexed: 11/01/2023] Open
Abstract
Sepsis is an uncontrolled host response to infection, resulting in a clinical syndrome involving multiple organ dysfunctions. Cardiac damage is the most common organ damage in sepsis. Uncontrolled inflammatory response is an important mechanism in the pathogenesis of septic cardiomyopathy (SCM). NLRP3 inflammasome promotes inflammatory response by controlling the activation of caspase-1 and the release of pro-inflammatory cytokines interleukin IL-1β and IL-18. The role of NLRP3 inflammasome has received increasing attention, but its activation mechanism and regulation of inflammation in SCM remain to be investigated.
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Affiliation(s)
- Yuqi Wen
- Shandong University of Traditional Chinese MedicineJinanChina
| | - Yang Liu
- Affiliated Hospital of Shandong University of Traditional Chinese MedicineJinanChina
| | - Weihong Liu
- Affiliated Hospital of Shandong University of Traditional Chinese MedicineJinanChina
| | - Wenli Liu
- Shandong University of Traditional Chinese MedicineJinanChina
| | - Jinyan Dong
- Shandong University of Traditional Chinese MedicineJinanChina
| | - Qingkuo Liu
- Shandong University of Traditional Chinese MedicineJinanChina
| | - Hao Hao
- Affiliated Hospital of Shandong University of Traditional Chinese MedicineJinanChina
| | - Hongsheng Ren
- Department of Intensive Care UnitShandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanChina
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29
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Nyandoro VO, Omolo CA, Ismail EA, Yong L, Govender T. Inflammation-responsive drug delivery nanosystems for treatment of bacterial-induced sepsis. Int J Pharm 2023; 644:123346. [PMID: 37633537 DOI: 10.1016/j.ijpharm.2023.123346] [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: 08/15/2023] [Accepted: 08/22/2023] [Indexed: 08/28/2023]
Abstract
Sepsis, a complication of dysregulated host immune systemic response to an infection, is life threatening and causes multiple organ injuries. Sepsis is recognized by WHO as a big contributor to global morbidity and mortality. The heterogeneity in sepsis pathophysiology, antimicrobial resistance threat, the slowdown in the development of antimicrobials, and limitations of conventional dosage forms jeopardize the treatment of sepsis. Drug delivery nanosystems are promising tools to overcome some of these challenges. Among the drug delivery nanosystems, inflammation-responsive nanosystems have attracted considerable interest in sepsis treatment due to their ability to respond to specific stimuli in the sepsis microenvironment to release their payload in a precise, targeted, controlled, and rapid manner compared to non-responsive nanosystems. These nanosystems posit superior therapeutic potential to enhance sepsis treatment. This review critically evaluates the recent advances in the design of drug delivery nanosystems that are inflammation responsive and their potential in enhancing sepsis treatment. The sepsis microenvironment's unique features, such as acidic pH, upregulated receptors, overexpressed enzymes, and enhanced oxidative stress, that form the basis for their design have been adequately discussed. These inflammation-responsive nanosystems have been organized into five classes namely: Receptor-targeted nanosystems, pH-responsive nanosystems, redox-responsive nanosystems, enzyme-responsive nanosystems, and multi-responsive nanosystems. Studies under each class have been thematically grouped and discussed with an emphasis on the polymers used in their design, nanocarriers, key characterization, loaded actives, and key findings on drug release and therapeutic efficacy. Further, this information is concisely summarized into tables and supplemented by inserted figures. Additionally, this review adeptly points out the strengths and limitations of the studies and identifies research avenues that need to be explored. Finally, the challenges and future perspectives on these nanosystems have been thoughtfully highlighted.
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Affiliation(s)
- Vincent O Nyandoro
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa; Department of Pharmaceutical Chemistry and Pharmaceutics, School of Pharmacy, Kabarak University, Nakuru, Kenya
| | - Calvin A Omolo
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa; Department of Pharmaceutics and Pharmacy Practice, School of Pharmacy and Health Sciences, United States International University-Africa, Nairobi, Kenya.
| | - Eman A Ismail
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Liu Yong
- Wenzhou Institute, University of Chinese Academy of Sciences (WIUCAS), China
| | - Thirumala Govender
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.
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30
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Jain K, Mohan KV, Roy G, Sinha P, Jayaraman V, Kiran, Yadav AS, Phasalkar A, Deepanshu, Pokhrel A, Perumal N, Sinha N, Chaudhary K, Upadhyay P. Reconditioned monocytes are immunomodulatory and regulate inflammatory environment in sepsis. Sci Rep 2023; 13:14977. [PMID: 37696985 PMCID: PMC10495550 DOI: 10.1038/s41598-023-42237-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 09/07/2023] [Indexed: 09/13/2023] Open
Abstract
Sepsis is caused by dysregulated immune response to severe infection and hyper inflammation plays a central role in worsening the disease. The immunomodulatory properties of mesenchymal stem cells (MSCs) have been evaluated as a therapeutic candidate for sepsis. Reconditioned monocytes (RM), generated from healthy human peripheral blood mononuclear cells (PBMCs) exhibit both macrophage and MSCs-like properties. RM were administered at different stages of sepsis in a mouse model. It reduced serum levels of IL6, MCP-1, IL-10, improved hypothermia, increased survival, and recovery from 0 to 66% when combined with antibiotics in the mouse model. The reduced human leucocyte antigen DR molecules expression on RM enables their co-culture with PBMCs of sepsis patients which resulted in reduced ROS production, and up-regulated TGF-β while down-regulating IL6, IL8, and IL-10 in-vitro. RM are potentially immunomodulatory, enhance survival in sepsis mouse model and modulate inflammatory behaviour of sepsis patient's PBMCs.
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Affiliation(s)
- Kshama Jain
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - K Varsha Mohan
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Gargi Roy
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Prakriti Sinha
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Vignesh Jayaraman
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Kiran
- Department of Medicine, Dr. Ram Mahohar Lohia Hospital, Baba Kharak Singh Road, New Delhi, 110001, India
| | - Ajit Singh Yadav
- Department of Medicine, Dr. Ram Mahohar Lohia Hospital, Baba Kharak Singh Road, New Delhi, 110001, India
| | - Akshay Phasalkar
- Department of Medicine, Dr. Ram Mahohar Lohia Hospital, Baba Kharak Singh Road, New Delhi, 110001, India
| | - Deepanshu
- Department of Medicine, Dr. Ram Mahohar Lohia Hospital, Baba Kharak Singh Road, New Delhi, 110001, India
| | - Anupa Pokhrel
- Department of Transfusion Medicine, Dr. Ram Mahohar Lohia Hospital, Baba Kharak Singh Road, New Delhi, 110001, India
| | - Nagarajan Perumal
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Nitin Sinha
- Department of Medicine, Dr. Ram Mahohar Lohia Hospital, Baba Kharak Singh Road, New Delhi, 110001, India
| | - Kiran Chaudhary
- Department of Transfusion Medicine, Dr. Ram Mahohar Lohia Hospital, Baba Kharak Singh Road, New Delhi, 110001, India
| | - Pramod Upadhyay
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, 110067, India.
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Li Z, Qu W, Zhang D, Sun Y, Shang D. The antimicrobial peptide chensinin-1b alleviates the inflammatory response by targeting the TLR4/NF-κB signaling pathway and inhibits Pseudomonas aeruginosa infection and LPS-mediated sepsis. Biomed Pharmacother 2023; 165:115227. [PMID: 37536032 DOI: 10.1016/j.biopha.2023.115227] [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: 05/08/2023] [Revised: 07/24/2023] [Accepted: 07/24/2023] [Indexed: 08/05/2023] Open
Abstract
Excessive inflammatory responses are a major contributor to the high mortality associated with sepsis, a prevalent global complication. Therefore, the potential therapeutic strategy for sepsis involves targeting macrophages and reducing proinflammatory cytokine release. Chensinin-1b, an analog of the natural antimicrobial peptide derived from Rana chensinensis skin secretion, exhibits broad-spectrum antibacterial activity and adopts a random coil conformation in both PBS and membrane solution. By efficiently neutralizing LPS, chensinin-1b holds promise in alleviating LPS-induced inflammatory responses. In this study, we established a mouse septic shock model by exposing mice to multiple-drug-resistant Pseudomonas aeruginosa, as well as an endotoxin-mediated sepsis model induced by LPS. Administering chensinin-1b significantly prolonged the survival of the experimental mice, concurrently mitigating inflammatory responses and reducing organ damage. Additionally, we investigated the anti-inflammatory mechanism of chensinin-1b using a constructed LPS-induced mouse macrophage RAW264.7 inflammatory model. Our findings demonstrated that chensinin-1b effectively mitigated the excessive activation of the TLR4/NF-κB signaling pathway by directly neutralizing extracellular LPS, thus ameliorating the inflammatory response. Moreover, upon blocking the TLR4 signaling pathway, chensinin-1b further reduced the release of proinflammatory cytokines induced by LPS, indicating alternative modes of regulation. Notably, chensinin-1b rapidly entered RAW264.7 cells within 30 min via endocytosis, diffusing into the cytoplasm while retaining its anti-inflammatory properties intracellularly. Although further investigations are warranted to comprehensively elucidate the intracellular anti-inflammatory mechanism of chensinin-1b, our findings substantiate its possession of anti-inflammatory properties both intracellularly and extracellularly. Thus, chensinin-1b emerges as a promising candidate for mitigating excessive inflammatory responses associated with sepsis.
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Affiliation(s)
- Zhenjia Li
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Wenzhi Qu
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Dongdong Zhang
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Yue Sun
- School of Life Science, Liaoning Normal University, Dalian 116081, China; Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery, Liaoning Normal University, Dalian 116081, China.
| | - Dejing Shang
- School of Life Science, Liaoning Normal University, Dalian 116081, China; Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery, Liaoning Normal University, Dalian 116081, China.
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He XL, Chen JY, Feng YL, Song P, Wong YK, Xie LL, Wang C, Zhang Q, Bai YM, Gao P, Luo P, Liu Q, Liao FL, Li ZJ, Jiang Y, Wang JG. Single-cell RNA sequencing deciphers the mechanism of sepsis-induced liver injury and the therapeutic effects of artesunate. Acta Pharmacol Sin 2023; 44:1801-1814. [PMID: 37041228 PMCID: PMC10462669 DOI: 10.1038/s41401-023-01065-y] [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: 11/16/2022] [Accepted: 02/16/2023] [Indexed: 04/13/2023] Open
Abstract
Liver, as an immune and detoxification organ, represents an important line of defense against bacteria and infection and a vulnerable organ that is easily injured during sepsis. Artesunate (ART) is an anti-malaria agent, that also exhibits broad pharmacological activities including anti-inflammatory, immune-regulation and liver protection. In this study, we investigated the cellular responses in liver to sepsis infection and ART hepatic-protective mechanisms against sepsis. Cecal ligation and puncture (CLP)-induced sepsis model was established in mice. The mice were administered ART (10 mg/kg, i.p.) at 4 h, and sacrificed at 12 h after the surgery. Liver samples were collected for preparing single-cell RNA transcriptome sequencing (scRNA-seq). The scRNA-seq analysis revealed that sepsis-induced a dramatic reduction of hepatic endothelial cells, especially the subtypes characterized with proliferation and differentiation. Macrophages were recruited during sepsis and released inflammatory cytokines (Tnf, Il1b, Il6), chemokines (Ccl6, Cd14), and transcription factor (Nfkb1), resulting in liver inflammatory responses. Massive apoptosis of lymphocytes and abnormal recruitment of neutrophils caused immune dysfunction. ART treatment significantly improved the survival of CLP mice within 96 h, and partially relieved or reversed the above-mentioned pathological features, mitigating the impact of sepsis on liver injury, inflammation, and dysfunction. This study provides comprehensive fundamental proof for the liver protective efficacy of ART against sepsis infection, which would potentially contribute to its clinical translation for sepsis therapy. Single cell transcriptome reveals the changes of various hepatocyte subtypes of CLP-induced liver injury and the potential pharmacological effects of artesunate on sepsis.
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Affiliation(s)
- Xue-Ling He
- Artemisinin Research Center, and Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
- Department of Nephrology, Shenzhen Key Laboratory of Kidney Diseases, and Shenzhen Clinical Research Centre for Geriatrics, Shenzhen People's Hospital, the First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, 518020, China
| | - Jia-Yun Chen
- Artemisinin Research Center, and Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
- Department of Nephrology, Shenzhen Key Laboratory of Kidney Diseases, and Shenzhen Clinical Research Centre for Geriatrics, Shenzhen People's Hospital, the First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, 518020, China
| | - Yu-Lin Feng
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, China
| | - Ping Song
- China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Yin Kwan Wong
- Department of Biological Sciences, National University of Singapore, Singapore, 117543, Singapore
| | - Lu-Lin Xie
- Department of Nephrology, Shenzhen Key Laboratory of Kidney Diseases, and Shenzhen Clinical Research Centre for Geriatrics, Shenzhen People's Hospital, the First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, 518020, China
| | - Chen Wang
- Artemisinin Research Center, and Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Qian Zhang
- Artemisinin Research Center, and Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Yun-Meng Bai
- Department of Nephrology, Shenzhen Key Laboratory of Kidney Diseases, and Shenzhen Clinical Research Centre for Geriatrics, Shenzhen People's Hospital, the First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, 518020, China
| | - Peng Gao
- Artemisinin Research Center, and Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Piao Luo
- Artemisinin Research Center, and Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Qiang Liu
- Advanced Drug Delivery and Regenerative Biomaterials Laboratory, and Cardiovascular Pharmacology Division of Cardiovascular Institute, School of Medicine, Stanford University, Stanford, CA, 94304, USA
| | - Fu-Long Liao
- Artemisinin Research Center, and Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Zhi-Jie Li
- Department of Nephrology, Shenzhen Key Laboratory of Kidney Diseases, and Shenzhen Clinical Research Centre for Geriatrics, Shenzhen People's Hospital, the First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, 518020, China.
| | - Yong Jiang
- Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China.
| | - Ji-Gang Wang
- Artemisinin Research Center, and Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China.
- Department of Nephrology, Shenzhen Key Laboratory of Kidney Diseases, and Shenzhen Clinical Research Centre for Geriatrics, Shenzhen People's Hospital, the First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, 518020, China.
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, China.
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Ma M, Zeng G, Tan B, Zhao G, Su Q, Zhang W, Song Y, Liang J, Xu B, Wang Z, Chen J, Hou M, Yang C, Yun J, Huang Y, Lin Y, Chen D, Han Y, DeMorrow S, Liang L, Lai J, Huang L. DAGLβ is the principal synthesizing enzyme of 2-AG and promotes aggressive phenotype of intrahepatic cholangiocarcinoma via AP-1/DAGLβ/miR4516 feedforward circuitry. Am J Physiol Gastrointest Liver Physiol 2023; 325:G213-G229. [PMID: 37366545 PMCID: PMC10435072 DOI: 10.1152/ajpgi.00243.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 05/23/2023] [Accepted: 05/30/2023] [Indexed: 06/28/2023]
Abstract
The endocannabinoid system (ECS) is dysregulated in various liver diseases. Previously, we had shown that the major endocannabinoid 2-arachidonoyl glycerol (2-AG) promoted tumorigenesis of intrahepatic cholangiocarcinoma (ICC). However, biosynthesis regulation and clinical significance of 2-AG remain elusive. In the present study, we quantified 2-AG by gas chromatography/mass spectrometry (GC/MS) and showed that 2-AG was enriched in patients with ICC samples as well as in thioacetamide-induced orthotopic rat ICC model. Moreover, we found that diacylglycerol lipase β (DAGLβ) was the principal synthesizing enzyme of 2-AG that significantly upregulated in ICC. DAGLβ promoted tumorigenesis and metastasis of ICC in vitro and in vivo and positively correlated with clinical stage and poor survival in patients with ICC. Functional studies showed that activator protein-1 (AP-1; heterodimers of c-Jun and FRA1) directly bound to the promoter and regulated transcription of DAGLβ, which can be enhanced by lipopolysaccharide (LPS). miR-4516 was identified as the tumor-suppressing miRNA of ICC that can be significantly suppressed by LPS, 2-AG, or ectopic DAGLβ overexpression. FRA1 and STAT3 were targets of miR-4516 and overexpression of miRNA-4516 significantly suppressed expression of FRA1, SATA3, and DAGLβ. Expression of miRNA-4516 was negatively correlated with FRA1, SATA3, and DAGLβ in patients with ICC samples. Our findings identify DAGLβ as the principal synthesizing enzyme of 2-AG in ICC. DAGLβ promotes oncogenesis and metastasis of ICC and is transcriptionally regulated by a novel AP-1/DAGLβ/miR4516 feedforward circuitry.NEW & NOTEWORTHY Dysregulated endocannabinoid system (ECS) had been confirmed in various liver diseases. However, regulation and function of 2-arachidonoyl glycerol (2-AG) and diacylglycerol lipase β (DAGLβ) in intrahepatic cholangiocarcinoma (ICC) remain to be elucidated. Here, we demonstrated that 2-AG was enriched in ICC, and DAGLβ was the principal synthesizing enzyme of 2-AG in ICC. DAGLβ promotes tumorigenesis and metastasis in ICC via a novel activator protein-1 (AP-1)/DAGLβ/miR4516 feedforward circuitry.
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Affiliation(s)
- Mingjian Ma
- Department of Pancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
- Center of Hepatopancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Guangyan Zeng
- Department of Pancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
- Center of Hepatopancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
- Department of Gastrointestinal Surgery, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, People's Republic of China
| | - Bingyan Tan
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Guangyin Zhao
- Laboratory Animal Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Qiao Su
- Laboratory Animal Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Wenhui Zhang
- Department of Pathology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Yan Song
- Department of Pathology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Jiahua Liang
- Department of Pancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
- Center of Hepatopancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Borui Xu
- Department of Pancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
- Center of Hepatopancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Zicheng Wang
- Department of Pancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
- Center of Hepatopancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Jiancong Chen
- Department of Pancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
- Center of Hepatopancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Mengjun Hou
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Chuntao Yang
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, Guangzhou, People's Republic of China
| | - Jingping Yun
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, People's Republic of China
- Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou, People's Republic of China
| | - Yuhua Huang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, People's Republic of China
- Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou, People's Republic of China
| | - Yansong Lin
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, People's Republic of China
- Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou, People's Republic of China
| | - Demeng Chen
- Center for Translational Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Yuyan Han
- School of Biological Sciences, University of Northern Colorado, Greeley, Colorado, United States
| | - Sharon DeMorrow
- Research Division, Central Texas Veterans Health Care System, Temple, Texas, United States
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Austin, Texas, United States
- Department of Internal Medicine, Dell Medical School, The University of Texas at Austin, Austin, Texas, United States
| | - Lijian Liang
- Department of Pancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
- Center of Hepatopancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Jiaming Lai
- Department of Pancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
- Center of Hepatopancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Li Huang
- Department of Pancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
- Center of Hepatopancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
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Wang T, Xu S, Zhang L, Yang T, Fan X, Zhu C, Wang Y, Tong F, Mei Q, Pan A. Identification of immune-related lncRNA in sepsis by construction of ceRNA network and integrating bioinformatic analysis. BMC Genomics 2023; 24:484. [PMID: 37620751 PMCID: PMC10464037 DOI: 10.1186/s12864-023-09535-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 07/26/2023] [Indexed: 08/26/2023] Open
Abstract
BACKGROUND Sepsis is a high mortality disease which seriously threatens human life and health, for which the pathogenetic mechanism still unclear. There is increasing evidence showed that immune and inflammation responses are key players in the development of sepsis pathology. LncRNAs, which act as ceRNAs, have critical roles in various diseases. However, the regulatory roles of ceRNA in the immunopathogenesis of sepsis have not yet been elucidated. RESULTS In this study, we aimed to identify immune biomarkers associated with sepsis. We first generated a global immune-associated ceRNA (IMCE) network based on data describing interactions pairs of gene-miRNA and miRNA-lncRNA. Afterward, we excavated a dysregulated sepsis immune-associated ceRNA (SPIMC) network from the global IMCE network by means of a multi-step computational approach. Functional enrichment indicated that lncRNAs in SPIMC network have pivotal roles in the immune mechanism underlying sepsis. Subsequently, we identified module and hub genes (CD4 and STAT4) via construction of a sepsis immune-related PPI network. Then, we identified hub genes based on the modular structure of PPI network and generated a ceRNA subnetwork to analyze key lncRNAs associated with sepsis. Finally, 6 lncRNAs (LINC00265, LINC00893, NDUFA6-AS1, NOP14-AS1, PRKCQ-AS1 and ZNF674-AS1) that identified as immune biomarkers of sepsis. Moreover, the CIBERSORT algorithm and the infiltration of circulating immune cells types were performed to identify the inflammatory state of sepsis. Correlation analyses between immune cells and sepsis immune biomarkers showed that the LINC00265 was strongly positive correlated with the macrophages M2 (r = 0.77). CONCLUSION Collectively, these results may suggest that these lncRNAs (LINC00265, LINC00893, NDUFA6-AS1, NOP14-AS1, PRKCQ-AS1 and ZNF674-AS1) played important roles in the immune pathogenesis of sepsis and provide potential therapeutic targets for further researches on immune therapy treatment in patients with sepsis.
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Affiliation(s)
- Tianfeng Wang
- Department of Critical Care Medicine, Division of Life Science and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, 230001, Anhui Province, China
| | - Si Xu
- Department of Neurology, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Lei Zhang
- Department of Critical Care Medicine, Division of Life Science and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, 230001, Anhui Province, China
| | - Tianjun Yang
- Department of Critical Care Medicine, Division of Life Science and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, 230001, Anhui Province, China
| | - Xiaoqin Fan
- Department of Critical Care Medicine, Division of Life Science and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, 230001, Anhui Province, China
| | - Chunyan Zhu
- Department of Critical Care Medicine, Division of Life Science and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, 230001, Anhui Province, China
| | - Yinzhong Wang
- Department of Critical Care Medicine, Division of Life Science and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, 230001, Anhui Province, China
| | - Fei Tong
- Department of Critical Care Medicine, Division of Life Science and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, 230001, Anhui Province, China
| | - Qing Mei
- Department of Critical Care Medicine, Division of Life Science and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, 230001, Anhui Province, China.
| | - Aijun Pan
- Department of Critical Care Medicine, Division of Life Science and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, 230001, Anhui Province, China.
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Muniz-Santos R, Lucieri-Costa G, de Almeida MAP, Moraes-de-Souza I, Brito MADSM, Silva AR, Gonçalves-de-Albuquerque CF. Lipid oxidation dysregulation: an emerging player in the pathophysiology of sepsis. Front Immunol 2023; 14:1224335. [PMID: 37600769 PMCID: PMC10435884 DOI: 10.3389/fimmu.2023.1224335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 06/30/2023] [Indexed: 08/22/2023] Open
Abstract
Sepsis is a life-threatening organ dysfunction caused by abnormal host response to infection. Millions of people are affected annually worldwide. Derangement of the inflammatory response is crucial in sepsis pathogenesis. However, metabolic, coagulation, and thermoregulatory alterations also occur in patients with sepsis. Fatty acid mobilization and oxidation changes may assume the role of a protagonist in sepsis pathogenesis. Lipid oxidation and free fatty acids (FFAs) are potentially valuable markers for sepsis diagnosis and prognosis. Herein, we discuss inflammatory and metabolic dysfunction during sepsis, focusing on fatty acid oxidation (FAO) alterations in the liver and muscle (skeletal and cardiac) and their implications in sepsis development.
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Affiliation(s)
- Renan Muniz-Santos
- Laboratory of Immunopharmacology, Department of Physiology, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Giovanna Lucieri-Costa
- Laboratory of Immunopharmacology, Department of Physiology, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Matheus Augusto P. de Almeida
- Neuroscience Graduate Program, Federal Fluminense University, Niteroi, Brazil
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Isabelle Moraes-de-Souza
- Laboratory of Immunopharmacology, Department of Physiology, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Adriana Ribeiro Silva
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Cassiano Felippe Gonçalves-de-Albuquerque
- Laboratory of Immunopharmacology, Department of Physiology, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
- Neuroscience Graduate Program, Federal Fluminense University, Niteroi, Brazil
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
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Mao X, Wu Y, Xu W. miR-126-5p expression in the plasma of patients with sepsis-induced acute lung injury and its correlation with inflammation and immune function. THE CLINICAL RESPIRATORY JOURNAL 2023. [PMID: 37248197 PMCID: PMC10363794 DOI: 10.1111/crj.13646] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 05/04/2023] [Accepted: 05/12/2023] [Indexed: 05/31/2023]
Abstract
OBJECTIVE This work was implemented to elucidate the miR-126-5p expression in the plasma of patients with sepsis-induced acute lung injury (ALI) and its correlation with inflammation and immune function. METHODS The peripheral blood of patients with sepsis-induced ALI was obtained, and the levels of inflammatory factors (interleukin-6 [IL-6], C-reactive protein [CRP], and procalcitonin [PCT]) were determined. Meanwhile, T lymphocyte subsets (CD3+, CD4+, and CD8+), and immunoglobulins (IgA, IgM, and IgG) were tested. miR-126-5p and TRAF6 mRNA expression in plasma was assessed. Receiver operating characteristic (ROC) curve was performed to assess the diagnostic accuracy of miR-126-5p in sepsis without ALI and sepsis with ALI. Correlation between miR-126-5p expression and clinical indicators was analyzed. The targets of miR-126-5p were predicted using the bioinformatics method, and the direct targets were verified through investigations. RESULTS miR-126-5p expression in plasma of patients with sepsis-induced ALI was reduced than that of patients with sepsis without ALI. miR-126-5p expression was negatively correlated with IL-6, CRP, and PCT but positively correlated with IgA, IgM, and IgG as well as CD3+, CD4+, and CD8+ in patients with sepsis-induced ALI. ROC curve suggested that miR-126-5p (AUC: 0.777; 95%CI: 0.689-0.866) could distinguish patients with sepsis with ALI from patients with sepsis without ALI. TRAF6 expression in patients with sepsis-induced ALI was higher than that in patients with sepsis without ALI. TRAF6 was a target gene of miR-126-5p, CONCLUSION: This research highlights that miR-126-5p is reduced in the plasma of patients with sepsis-induced ALI, and miR-126-5p relates to systemic inflammation and immune function indicators.
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Affiliation(s)
- Xiaoyong Mao
- Department of Blood Transfusion, Zhuji People's Hospital, Shaoxing, Zhejiang, China
| | - Yiping Wu
- Department of Clinical Laboratory, The Second People's Hospital of Zhuji, Shaoxing, Zhejiang, China
| | - Weifeng Xu
- Department of Clinical Laboratory, The Second People's Hospital of Zhuji, Shaoxing, Zhejiang, China
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Blanco NG, Machado NM, Castro LL, Antunes MA, Takiya CM, Trugilho MRO, Silva LR, Paes Leme AF, Domingues RR, Pauletti BA, Miranda BT, Silva JD, Dos Santos CC, Silva PL, Rocco PRM, Cruz FF. Extracellular Vesicles from Different Sources of Mesenchymal Stromal Cells Have Distinct Effects on Lung and Distal Organs in Experimental Sepsis. Int J Mol Sci 2023; 24:ijms24098234. [PMID: 37175936 PMCID: PMC10179270 DOI: 10.3390/ijms24098234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 04/24/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023] Open
Abstract
The effects of the administration of mesenchymal stromal cells (MSC) may vary according to the source. We hypothesized that MSC-derived extracellular vesicles (EVs) obtained from bone marrow (BM), adipose (AD), or lung (L) tissues may also lead to different effects in sepsis. We profiled the proteome from EVs as a first step toward understanding their mechanisms of action. Polymicrobial sepsis was induced in C57BL/6 mice by cecal ligation and puncture (SEPSIS) and SHAM (control) animals only underwent laparotomy. Twenty-four hours after surgery, animals in the SEPSIS group were randomized to receive saline or 3 × 106 MSC-derived EVs from BM, AD, or L. The diffuse alveolar damage was decreased with EVs from all three sources. In kidneys, BM-, AD-, and L-EVs reduced edema and expression of interleukin-18. Kidney injury molecule-1 expression decreased only in BM- and L-EVs groups. In the liver, only BM-EVs reduced congestion and cell infiltration. The size and number of EVs from different sources were not different, but the proteome of the EVs differed. BM-EVs were enriched for anti-inflammatory proteins compared with AD-EVs and L-EVs. In conclusion, BM-EVs were associated with less organ damage compared with the other sources of EVs, which may be related to differences detected in their proteome.
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Affiliation(s)
- Natália G Blanco
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
- National Institute of Science and Technology for Regenerative Medicine, Rio de Janeiro 21941-902, RJ, Brazil
| | - Natália M Machado
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
- National Institute of Science and Technology for Regenerative Medicine, Rio de Janeiro 21941-902, RJ, Brazil
| | - Ligia L Castro
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
- National Institute of Science and Technology for Regenerative Medicine, Rio de Janeiro 21941-902, RJ, Brazil
| | - Mariana A Antunes
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
- National Institute of Science and Technology for Regenerative Medicine, Rio de Janeiro 21941-902, RJ, Brazil
| | - Christina M Takiya
- Laboratory of Immunopathology, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
| | - Monique R O Trugilho
- Toxinology Laboratory, Center for Technological Development Health, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro 21040-900, RJ, Brazil
| | - Luana R Silva
- Toxinology Laboratory, Center for Technological Development Health, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro 21040-900, RJ, Brazil
| | - Adriana F Paes Leme
- Mass Spectrometry Laboratory, Brazilian Bioscience National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials, Campinas 13083-970, SP, Brazil
| | - Romênia R Domingues
- Mass Spectrometry Laboratory, Brazilian Bioscience National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials, Campinas 13083-970, SP, Brazil
| | - Bianca A Pauletti
- Mass Spectrometry Laboratory, Brazilian Bioscience National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials, Campinas 13083-970, SP, Brazil
| | - Beatriz T Miranda
- Laboratory of Cellular and Molecular Cardiology, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
| | - Johnatas D Silva
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
- National Institute of Science and Technology for Regenerative Medicine, Rio de Janeiro 21941-902, RJ, Brazil
| | - Claudia C Dos Santos
- The Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Unity Health Toronto, 209 Victoria Street, Toronto, ON M5B 1T8, Canada
- Institute of Medical Sciences, Temerty Faculty of Medicine, University of Toronto, 1 King's College Circle, Toronto, ON M5S 1A8, Canada
- Department of Physiology, Faculty of Medicine, University of Toronto, 1 King's College Circle, Toronto, ON M5S 1A8, Canada
| | - Pedro L Silva
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
- National Institute of Science and Technology for Regenerative Medicine, Rio de Janeiro 21941-902, RJ, Brazil
| | - Patricia R M Rocco
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
- National Institute of Science and Technology for Regenerative Medicine, Rio de Janeiro 21941-902, RJ, Brazil
| | - Fernanda F Cruz
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
- National Institute of Science and Technology for Regenerative Medicine, Rio de Janeiro 21941-902, RJ, Brazil
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Nong Y, Wei X, Yu D. Inflammatory mechanisms and intervention strategies for sepsis-induced myocardial dysfunction. Immun Inflamm Dis 2023; 11:e860. [PMID: 37249297 DOI: 10.1002/iid3.860] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 12/30/2022] [Accepted: 04/21/2023] [Indexed: 05/31/2023] Open
Abstract
Sepsis-induced myocardial dysfunction (SIMD) is the leading cause of death in patients with sepsis in the intensive care units. The main manifestations of SIMD are systolic and diastolic dysfunctions of the myocardium. Despite our initial understanding of the SIMD over the past three decades, the incidence and mortality of SIMD remain high. This may be attributed to the large degree of heterogeneity among the initiating factors, disease processes, and host states involved in SIMD. Previously, organ dysfunction caused by sepsis was thought to be an impairment brought about by an excessive inflammatory response. However, many recent studies have shown that SIMD is a consequence of a combination of factors shaped by the inflammatory responses between the pathogen and the host. In this article, we review the mechanisms of the inflammatory responses and potential novel therapeutic strategies in SIMD.
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Affiliation(s)
- Yuxin Nong
- Department of Cardiology, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Xuebiao Wei
- Department of Geriatric Intensive Medicine, Guangdong Provincial Geriatrics Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Danqing Yu
- Department of Cardiology, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
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Gao N, Tang AL, Liu XY, Chen J, Zhang GQ. p53-Dependent ferroptosis pathways in sepsis. Int Immunopharmacol 2023; 118:110083. [PMID: 37028271 DOI: 10.1016/j.intimp.2023.110083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 03/12/2023] [Accepted: 03/21/2023] [Indexed: 04/09/2023]
Abstract
Sepsis is caused by complex infections, trauma, and major surgery that results in high morbidity and mortality. As one of the leading causes of death in the intensive care unit (ICU), sepsis causes organ dysfunction and death via a vicious cycle of uncontrolled inflammatory responses and immunosuppression. Ferroptosis is an iron-dependent cellular death pathway driven by the accumulation of lipid peroxides, which occurs in sepsis. p53 is an important regulator of ferroptosis. Under intracellular/extracellular stimulation and pressure, p53 acts as a transcription factor to regulate the expression of downstream genes, which help cells/bodies to resist stimuli. p53 can also function independently as an important mediator. The understanding of key cellular and molecular mechanisms of ferroptosis facilitates the prognosis of sepsis. This article describes the molecular mechanism and role of p53 in sepsis-induced ferroptosis, and introduces some potential therapeutic targets for sepsis-induced ferroptosis, which highlights the dominant and potential therapeutic role of p53 in sepsis. Keywords: p53, acetylation, Sirt3, ferroptosis, sepsis, therapy.
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Affiliation(s)
- Nan Gao
- China-Japan Friendship Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Emergency, China-Japan Friendship Hospital, No. 2 Yinghua Dongjie, Beijing 100029, China
| | - A-Ling Tang
- Graduate School, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Xiao-Yu Liu
- China-Japan Friendship Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Emergency, China-Japan Friendship Hospital, No. 2 Yinghua Dongjie, Beijing 100029, China
| | - Jie Chen
- China-Japan Friendship Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Emergency, China-Japan Friendship Hospital, No. 2 Yinghua Dongjie, Beijing 100029, China
| | - Guo-Qiang Zhang
- Department of Emergency, China-Japan Friendship Hospital, No. 2 Yinghua Dongjie, Beijing 100029, China.
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Tang Y, Wu J, Tian Y, Wang J, Wang M, Zong S, Wan C, Wang M, Zhu J. Predictive value of peripheral lymphocyte subsets for the disease progression in patients with sepsis. Int Immunopharmacol 2023; 117:109922. [PMID: 37012888 DOI: 10.1016/j.intimp.2023.109922] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 02/04/2023] [Accepted: 02/17/2023] [Indexed: 03/17/2023]
Abstract
OBJECTIVE To investigate the predictive value of peripheral lymphocyte subsets for sepsis progression. METHODS Patients with sepsis were divided into the improved group (n = 46) and severe group (n = 39) according to disease progression. Flow cytometric analysis was performed to enumerate absolute counts of peripheral lymphocyte subsets. Logistic regression analyses were conducted to identify clinical factors linked to sepsis progression. RESULTS The absolute counts of peripheral lymphocyte subsets were markedly decreased in septic patients compared with healthy controls. After treatment, the absolute counts of lymphocytes, CD3+ T cells, and CD8+ T cells were restored in the improved group, and reduced in the severe group. Logistic regression analysis indicated that a low CD8+ T cells count was a risk factor for sepsis progression. Receiver operating characteristic curve analysis revealed that CD8+ T cells count had the greatest ability to predict sepsis progression. CONCLUSIONS The absolute counts of CD3+ T cells, CD4+ T cells, CD8+ T cells, B cells, and natural killer cells were significantly higher in the improved group than the severe group. CD8+ T cells count was predictive of sepsis progression. Lymphopenia and CD8+ T cells depletion were associated with the clinical outcomes of sepsis, suggesting that CD8+ T cells have potential as a predictive biomarker and therapeutic target for patients with sepsis.
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Affiliation(s)
- Yawei Tang
- Department of Flow Cytometry Center, Clinical Laboratory, the Second Hospital of Dalian Medical University, Dalian, China
| | - Jingxue Wu
- Department of Flow Cytometry Center, Clinical Laboratory, the Second Hospital of Dalian Medical University, Dalian, China
| | - Yao Tian
- Department of Flow Cytometry Center, Clinical Laboratory, the Second Hospital of Dalian Medical University, Dalian, China
| | - Jiao Wang
- Department of Flow Cytometry Center, Clinical Laboratory, the Second Hospital of Dalian Medical University, Dalian, China
| | - Mingjie Wang
- Nanjing Huaixi Medical Technology Co., Ltd., Nanjing, China
| | - Shouyang Zong
- Department of Clinical Laboratory, Jinhu County People's Hospital, Huai'an, China
| | - Changchun Wan
- Department of Clinical Laboratory, Jinhu County People's Hospital, Huai'an, China
| | - Min Wang
- Department of Clinical Laboratory, the Second Hospital of Dalian Medical University, Dalian, China.
| | - Jie Zhu
- Department of Flow Cytometry Center, Clinical Laboratory, the Second Hospital of Dalian Medical University, Dalian, China.
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Li Z, Zhang H, Xie K, Zhang Y, Zhang Z, Zheng W, Yang T, Zhang L, Yu Y. EARLY INITIATION OF RENAL REPLACEMENT THERAPY IN INTENSIVE CARE UNIT PATIENTS WITH BOTH ACUTE RESPIRATORY DISTRESS SYNDROME AND SEPSIS WITH OR WITHOUT RENAL FAILURE: A RETROSPECTIVE COHORT STUDY BASED ON PROPENSITY SCORE MATCHING. Shock 2023; 59:569-575. [PMID: 36802286 DOI: 10.1097/shk.0000000000002090] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
ABSTRACT Background: It is unknown whether early renal replacement therapy (RRT) initiation strategy in intensive care unit (ICU) patients with both acute respiratory distress syndrome (ARDS) and sepsis with or without renal failure is clinically beneficial. Patients and methods: A total of 818 patients with both ARDS and sepsis admitted to the ICU of Tianjin Medical University General Hospital were included in the analysis. Early RRT was defined as initiating the RRT strategy within 24 h of admission. The relationship between early RRT and clinical outcomes, including primary (30-day mortality) and secondary (90-day mortality, serum creatinine, Pa o2 /Fi o2 , duration of invasive mechanical ventilation, cumulative fluid output, and cumulative fluid balance) outcomes, was compared using propensity score matching (PSM). Results: A total of 277 patients (33.9% of the total population) underwent an early RRT initiation strategy before PSM. After PSM, a cohort of 147 patients with early RRT and 147 patients without early RRT with matched baseline characteristics (including serum creatinine at admission) were constructed. Early RRT was not significantly associated with 30- (hazard ratio [HR], 1.25; 95% confidence interval [CI], 0.85-1.85; P = 0.258) or 90-day mortality (HR, 1.30; 95% CI, 0.91-1.87, P = 0.150). At each time point within 72 h after admission, there was no significant difference in serum creatinine, Pa o2 /Fi o2 and duration of mechanical ventilation between the early and the no early RRT groups. Early RRT significantly increased total output at all time points within 72 h of admission and reached a statistically significant negative fluid balance at 48 h. Conclusions: Early RRT initiation strategies had no statistically significant survival benefit in ICU patients with both ARDS and sepsis, with or without renal failure, nor did they significantly improve serum creatinine and oxygenation or shorten the duration of mechanical ventilation. The use and timing of RRT in such patients should be thoroughly investigated.
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Affiliation(s)
- Ziping Li
- Department of Cardiology, Tianjin Medical University General Hospital, Tianjin, China
| | - Haoyue Zhang
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin, China
| | - Keliang Xie
- Department of Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin, China
| | - Ying Zhang
- Department of Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin, China
| | - Zhen Zhang
- Department of Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin, China
| | | | - Tianqi Yang
- Department of Cardiology, Tianjin Medical University General Hospital, Tianjin, China
| | - Linlin Zhang
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin, China
| | - Yonghao Yu
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin, China
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Ning J, Sun K, Wang X, Fan X, Jia K, Cui J, Ma C. Use of machine learning-based integration to develop a monocyte differentiation-related signature for improving prognosis in patients with sepsis. Mol Med 2023; 29:37. [PMID: 36941583 PMCID: PMC10029317 DOI: 10.1186/s10020-023-00634-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 03/13/2023] [Indexed: 03/23/2023] Open
Abstract
BACKGROUND Although significant advances have been made in intensive care medicine and antibacterial treatment, sepsis is still a common disease with high mortality. The condition of sepsis patients changes rapidly, and each hour of delay in the administration of appropriate antibiotic treatment can lead to a 4-7% increase in fatality. Therefore, early diagnosis and intervention may help improve the prognosis of patients with sepsis. METHODS We obtained single-cell sequencing data from 12 patients. This included 14,622 cells from four patients with bacterial infectious sepsis and eight patients with sepsis admitted to the ICU for other various reasons. Monocyte differentiation trajectories were analyzed using the "monocle" software, and differentiation-related genes were identified. Based on the expression of differentiation-related genes, 99 machine-learning combinations of prognostic signatures were obtained, and risk scores were calculated for all patients. The "scissor" software was used to associate high-risk and low-risk patients with individual cells. The "cellchat" software was used to demonstrate the regulatory relationships between high-risk and low-risk cells in a cellular communication network. The diagnostic value and prognostic predictive value of Enah/Vasp-like (EVL) were determined. Clinical validation of the results was performed with 40 samples. The "CBNplot" software based on Bayesian network inference was used to construct EVL regulatory networks. RESULTS We systematically analyzed three cell states during monocyte differentiation. The differential analysis identified 166 monocyte differentiation-related genes. Among the 99 machine-learning combinations of prognostic signatures constructed, the Lasso + CoxBoost signature with 17 genes showed the best prognostic prediction performance. The highest percentage of high-risk cells was found in state one. Cell communication analysis demonstrated regulatory networks between high-risk and low-risk cell subpopulations and other immune cells. We then determined the diagnostic and prognostic value of EVL stabilization in multiple external datasets. Experiments with clinical samples demonstrated the accuracy of this analysis. Finally, Bayesian network inference revealed potential network mechanisms of EVL regulation. CONCLUSIONS Monocyte differentiation-related prognostic signatures based on the Lasso + CoxBoost combination were able to accurately predict the prognostic status of patients with sepsis. In addition, low EVL expression was associated with poor prognosis in sepsis.
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Affiliation(s)
- Jingyuan Ning
- Department of Immunology, Hebei Medical University, Shijiazhuang, People's Republic of China
| | - Keran Sun
- Department of Immunology, Hebei Medical University, Shijiazhuang, People's Republic of China
| | - Xuan Wang
- Department of Immunology, Hebei Medical University, Shijiazhuang, People's Republic of China
- Department of Laboratory, The Second Hospital of Hebei Medical University, Shijiazhuang, People's Republic of China
| | - Xiaoqing Fan
- Department of Immunology, Hebei Medical University, Shijiazhuang, People's Republic of China
| | - Keqi Jia
- Department of Pathology, Shijiazhuang People's Hospital, Shijiazhuang, People's Republic of China
| | - Jinlei Cui
- Department of Immunology, Hebei Medical University, Shijiazhuang, People's Republic of China
| | - Cuiqing Ma
- Department of Immunology, Hebei Medical University, Shijiazhuang, People's Republic of China.
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Single-cell Sequence Analysis Combined with Multiple Machine Learning to Identify Markers in Sepsis Patients: LILRA5. Inflammation 2023:10.1007/s10753-023-01803-8. [PMID: 36920635 DOI: 10.1007/s10753-023-01803-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 03/04/2023] [Accepted: 03/06/2023] [Indexed: 03/16/2023]
Abstract
Sepsis is a disease with a very high mortality rate, mainly involving an immune-dysregulated response due to bacterial infection. Most studies are currently limited to the whole blood transcriptome level; however, at the single cell level, there is still a great deal unknown about specific cell subsets and disease markers. We obtained 29 peripheral blood single-cell sequencing data, including 66,283 cells from 10 confirmed samples of sepsis infection and 19 healthy samples. Cells related to the sepsis phenotype were identified and characterized by the "scissor" method. The regulatory relationships of sepsis-related phenotype cells in the cellular communication network were clarified using the "cell chat" method. The least absolute shrinkage and selection operator (LASSO), support vector machine (SVM), and random forest (RF) were used to identify sepsis signature genes of diagnostic value. External validation was performed using multiple datasets from the GEO database (GSE28750, GSE185263, GSE57065) and 40 clinical samples. Bayesian algorithm was used to calculate the regulatory network of LILRA5 co-expressed genes. The stability of atenolol-targeting LILRA5 was determined by molecular docking techniques. Ultimately, action trajectory and survival analyses demonstrate the effectiveness of atenolol-targeted LILRA5 in treating patients with sepsis. We successfully identified 1215 healthy phenotypic cells and 462 sepsis phenotypic cells. We focused on 447 monocytes of the sepsis phenotype. Among the cellular communications, there were a large number of differences between these cells and other immune cells showing a significant inflammatory phenotype compared to the healthy phenotypic cells. Together, the three machine learning algorithms identified the LILRA5 marker gene in sepsis patients, and validation results from multiple external datasets as well as real-world clinical samples demonstrated the robust diagnostic performance of LILRA5. The AUC values of LILRA5 in the external datasets GSE28750, GSE185263, and GSE57065 could reach 0.875, 0.940, and 0.980, in that order. Bayesian networks identified a large number of unknown regulatory relationships for LILRA5 co-expression. Molecular docking results demonstrated the possibility of atenolol targeting LILRA5 for the treatment of sepsis. Behavioral trajectory analysis and survival analysis demonstrate that atenolol has a desirable therapeutic effect. LILRA5 is a marker gene in sepsis patients, and atenolol can stably target LILRA5.
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Berlot G, Tomasini A, Zanchi S, Moro E. The Techniques of Blood Purification in the Treatment of Sepsis and Other Hyperinflammatory Conditions. J Clin Med 2023; 12:jcm12051723. [PMID: 36902510 PMCID: PMC10002609 DOI: 10.3390/jcm12051723] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/16/2023] [Accepted: 02/16/2023] [Indexed: 02/24/2023] Open
Abstract
Even in the absence of strong indications deriving from clinical studies, the removal of mediators is increasingly used in septic shock and in other clinical conditions characterized by a hyperinflammatory response. Despite the different underlying mechanisms of action, they are collectively indicated as blood purification techniques. Their main categories include blood- and plasma processing procedures, which can run in a stand-alone mode or, more commonly, in association with a renal replacement treatment. The different techniques and principles of function, the clinical evidence derived from multiple clinical investigations, and the possible side effects are reviewed and discussed along with the persisting uncertainties about their precise role in the therapeutic armamentarium of these syndromes.
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Affiliation(s)
- Giorgio Berlot
- Department of Anesthesia and Intensive Care, Azienda Sanitaria Universitaria Giuliano Isontina, 34148 Trieste, Italy
- UCO Anestesia Rianimazione e Terapia Antalgica, Azienda Sanitaria Universitaria Giuliano Isontina, Strada di Fiume 447, 34149 Trieste, Italy
- Correspondence: ; Tel.: +039-04039904540; Fax: +039-040912278
| | - Ariella Tomasini
- Department of Anesthesia and Intensive Care, Azienda Sanitaria Universitaria Giuliano Isontina, 34148 Trieste, Italy
| | - Silvia Zanchi
- Department of Anesthesia and Intensive Care, Azienda Sanitaria Universitaria Giuliano Isontina, 34148 Trieste, Italy
| | - Edoardo Moro
- Department of Anesthesia and Intensive Care, Azienda Sanitaria Universitaria Giuliano Isontina, 34148 Trieste, Italy
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Barichello T, Rocha Catalão CH, Rohlwink UK, van der Kuip M, Zaharie D, Solomons RS, van Toorn R, Tutu van Furth M, Hasbun R, Iovino F, Namale VS. Bacterial meningitis in Africa. Front Neurol 2023; 14:822575. [PMID: 36864913 PMCID: PMC9972001 DOI: 10.3389/fneur.2023.822575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 01/18/2023] [Indexed: 02/16/2023] Open
Abstract
Bacterial meningitis differs globally, and the incidence and case fatality rates vary by region, country, pathogen, and age group; being a life-threatening disease with a high case fatality rate and long-term complications in low-income countries. Africa has the most significant prevalence of bacterial meningitis illness, and the outbreaks typically vary with the season and the geographic location, with a high incidence in the meningitis belt of the sub-Saharan area from Senegal to Ethiopia. Streptococcus pneumoniae (pneumococcus) and Neisseria meningitidis (meningococcus) are the main etiological agents of bacterial meningitis in adults and children above the age of one. Streptococcus agalactiae (group B Streptococcus), Escherichia coli, and Staphylococcus aureus are neonatal meningitis's most common causal agents. Despite efforts to vaccinate against the most common causes of bacterial neuro-infections, bacterial meningitis remains a significant cause of mortality and morbidity in Africa, with children below 5 years bearing the heaviest disease burden. The factors attributed to this continued high disease burden include poor infrastructure, continued war, instability, and difficulty in diagnosis of bacterial neuro-infections leading to delay in treatment and hence high morbidity. Despite having the highest disease burden, there is a paucity of African data on bacterial meningitis. In this article, we discuss the common etiologies of bacterial neuroinfectious diseases, diagnosis and the interplay between microorganisms and the immune system, and the value of neuroimmune changes in diagnostics and therapeutics.
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Affiliation(s)
- Tatiana Barichello
- Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciúma, SC, Brazil
- Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Carlos Henrique Rocha Catalão
- Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
- Department of Neuroscience and Behavioral Science, Ribeirao Preto Medical School, University of São Paulo (USP), Ribeirao Preto, SP, Brazil
| | - Ursula K. Rohlwink
- Pediatric Neurosurgery Unit, Red Cross War Memorial Children's Hospital, Cape Town, South Africa
- Division of Neurosurgery, University of Cape Town, Cape Town, South Africa
- Neuroscience Institute, University of Cape Town, Cape Town, South Africa
| | - Martijn van der Kuip
- Department of Pediatric Infectious Diseases and Immunology, Amsterdam Infection and Immunity Institute, Amsterdam University Medical Centers, Vrije Universiteit, Amsterdam, Netherlands
| | - Dan Zaharie
- Department of Anatomical Pathology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
- National Health Laboratory Services, Tygerberg Hospital, Cape Town, South Africa
| | - Regan S. Solomons
- Department of Pediatric and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Ronald van Toorn
- Department of Pediatric and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Marceline Tutu van Furth
- Department of Pediatric Infectious Diseases and Immunology, Amsterdam Infection and Immunity Institute, Amsterdam University Medical Centers, Vrije Universiteit, Amsterdam, Netherlands
| | - Rodrigo Hasbun
- Division of Infectious Diseases, Department of Internal Medicine, UT Health, McGovern Medical School, Houston, TX, United States
| | - Federico Iovino
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Vivian Ssonko Namale
- Columbia University Irving Medical Center and New York Presbyterian Hospital, New York, NY, United States
- Department of Paediatrics and Child Health, Makerere University College of Health Sciences, Kampala, Uganda
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Wu D, Shi Y, Zhang H, Miao C. Epigenetic mechanisms of Immune remodeling in sepsis: targeting histone modification. Cell Death Dis 2023; 14:112. [PMID: 36774341 PMCID: PMC9922301 DOI: 10.1038/s41419-023-05656-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 02/01/2023] [Accepted: 02/03/2023] [Indexed: 02/13/2023]
Abstract
Sepsis is a life-threatening disorder disease defined as infection-induced dysregulated immune responses and multiple organ dysfunction. The imbalance between hyperinflammation and immunosuppression is a crucial feature of sepsis immunity. Epigenetic modifications, including histone modifications, DNA methylation, chromatin remodeling, and non-coding RNA, play essential roles in regulating sepsis immunity through epi-information independent of the DNA sequence. In recent years, the mechanisms of histone modification in sepsis have received increasing attention, with ongoing discoveries of novel types of histone modifications. Due to the capacity for prolonged effects on immune cells, histone modifications can induce immune cell reprogramming and participate in the long-term immunosuppressed state of sepsis. Herein, we systematically review current mechanisms of histone modifications involved in the regulation of sepsis, summarize their role in sepsis from an immune perspective and provide potential therapeutic opportunities targeting histone modifications in sepsis treatment.
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Affiliation(s)
- Dan Wu
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, China
- Department of Anesthesiology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yuxin Shi
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, China
- Department of Anesthesiology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Hao Zhang
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China.
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, China.
- Department of Anesthesiology, Shanghai Medical College, Fudan University, Shanghai, China.
| | - Changhong Miao
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China.
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, China.
- Department of Anesthesiology, Shanghai Medical College, Fudan University, Shanghai, China.
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Takahama M, Patil A, Johnson K, Cipurko D, Miki Y, Taketomi Y, Carbonetto P, Plaster M, Richey G, Pandey S, Cheronis K, Ueda T, Gruenbaum A, Dudek SM, Stephens M, Murakami M, Chevrier N. Organism-Wide Analysis of Sepsis Reveals Mechanisms of Systemic Inflammation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.30.526342. [PMID: 36778287 PMCID: PMC9915512 DOI: 10.1101/2023.01.30.526342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Sepsis is a systemic response to infection with life-threatening consequences. Our understanding of the impact of sepsis across organs of the body is rudimentary. Here, using mouse models of sepsis, we generate a dynamic, organism-wide map of the pathogenesis of the disease, revealing the spatiotemporal patterns of the effects of sepsis across tissues. These data revealed two interorgan mechanisms key in sepsis. First, we discover a simplifying principle in the systemic behavior of the cytokine network during sepsis, whereby a hierarchical cytokine circuit arising from the pairwise effects of TNF plus IL-18, IFN-γ, or IL-1β explains half of all the cellular effects of sepsis on 195 cell types across 9 organs. Second, we find that the secreted phospholipase PLA2G5 mediates hemolysis in blood, contributing to organ failure during sepsis. These results provide fundamental insights to help build a unifying mechanistic framework for the pathophysiological effects of sepsis on the body.
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48
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He W, Dong H, Wu C, Zhong Y, Li J. The role of NLRP3 inflammasome in sepsis: A potential therapeutic target. Int Immunopharmacol 2023; 115:109697. [PMID: 37724951 DOI: 10.1016/j.intimp.2023.109697] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/28/2022] [Accepted: 01/03/2023] [Indexed: 01/22/2023]
Abstract
Sepsis is the host immune imbalance following infection and leads to organ dysfunction, with highly complicated pathophysiology. To date, sepsis still lacks effective therapies with high mortality rates. Recently, numerous studies have highlighted the potential of NLRP3 inflammasome as a therapeutic target during sepsis. NLRP3 inflammasome is a protein complex that could induce the activation of caspase-1 and the following release of pro-inflammatory cytokines such as IL-1β and IL-18. It was demonstrated that NLRP3 inflammasome was involved in the development and progression of sepsis. In contrast, inhibition of NLRP3 inflammasome activation could mitigate the inflammatory response, protect organ function, and improve outcomes and mortality. This paper illustrated the activation pathways of the NLRP3 inflammasome and its possible molecular mechanisms in the pathophysiology of sepsis. Meanwhile, the beneficial effects of inhibiting NLRP3 activation in sepsis-related organ damage were also presented. In addition, the diverse role of NLRP3 inflammasome in bacterial clearance was addressed. Of note, several herbal extracts targeting NLRP3 inflammasome in the treatment of sepsis were emphasized. We hope that this paper could provide a basis for further drug research targeting NLRP3 inflammasome.
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Affiliation(s)
- Wenfang He
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Haiyun Dong
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Chenfang Wu
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yanjun Zhong
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Jinxiu Li
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China.
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49
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Brittney W, Kozar R, Wei C. EMERGING ROLE OF EXTRACELLULAR RNA IN INNATE IMMUNITY, SEPSIS, AND TRAUMA. Shock 2023; 59:190-199. [PMID: 36730864 PMCID: PMC9957828 DOI: 10.1097/shk.0000000000002032] [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] [Indexed: 02/04/2023]
Abstract
ABSTRACT Sepsis and trauma remain the leading causes of morbidity and mortality. Our understanding of the molecular pathogenesis in the development of multiple organ dysfunction in sepsis and trauma has evolved as more focus is on secondary injury from innate immunity, inflammation, and the potential role of endogenous danger molecules. Studies of the past several decades have generated evidence for extracellular RNAs (exRNAs) as biologically active mediators in health and disease. Here, we review studies on plasma exRNA profiling in mice and humans with sepsis and trauma, the role and mode of action by exRNAs, such as ex-micro(mi)RNAs, in host innate immune response, and their potential implications in various organ injury during sepsis and trauma.
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Affiliation(s)
- Williams Brittney
- Translational Research Program, Department of Anesthesiology, and Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Rosemary Kozar
- Shock Trauma Center and Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Chao Wei
- Translational Research Program, Department of Anesthesiology, and Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, MD 21201, USA
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50
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Xu J, Gao C, He Y, Fang X, Sun D, Peng Z, Xiao H, Sun M, Zhang P, Zhou T, Yang X, Yu Y, Li R, Zou X, Shu H, Qiu Y, Zhou X, Yuan S, Yao S, Shang Y. NLRC3 expression in macrophage impairs glycolysis and host immune defense by modulating the NF-κB-NFAT5 complex during septic immunosuppression. Mol Ther 2023; 31:154-173. [PMID: 36068919 PMCID: PMC9840117 DOI: 10.1016/j.ymthe.2022.08.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 06/23/2022] [Accepted: 08/30/2022] [Indexed: 01/28/2023] Open
Abstract
Impairment of innate immune cell function and metabolism underlies immunosuppression in sepsis; however, a promising therapy to orchestrate this impairment is currently lacking. In this study, high levels of NOD-like receptor family CARD domain containing-3 (NLRC3) correlated with the glycolytic defects of monocytes/macrophages from septic patients and mice that developed immunosuppression. Myeloid-specific NLRC3 deletion improved macrophage glycolysis and sepsis-induced immunosuppression. Mechanistically, NLRC3 inhibits nuclear factor (NF)-κB p65 binding to nuclear factor of activated T cells 5 (NFAT5), which further controls the expression of glycolytic genes and proinflammatory cytokines of immunosuppressive macrophages. This is achieved by decreasing NF-κB activation-co-induced by TNF-receptor-associated factor 6 (TRAF6) or mammalian target of rapamycin (mTOR)-and decreasing transcriptional co-activator p300 activity by inducing NLRC3 sequestration of mTOR and p300. Genetic inhibition of NLRC3 disrupted the NLRC3-mTOR-p300 complex and enhanced NF-κB binding to the NFAT5 promoter in concert with p300. Furthermore, intrapulmonary delivery of recombinant adeno-associated virus harboring a macrophage-specific NLRC3 deletion vector significantly improved the defense of septic mice that developed immunosuppression upon secondary intratracheal bacterial challenge. Collectively, these findings indicate that NLRC3 mediates critical aspects of innate immunity that contribute to an immunocompromised state during sepsis and identify potential therapeutic targets.
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Affiliation(s)
- Jiqian Xu
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Chenggang Gao
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yajun He
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xiangzhi Fang
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Deyi Sun
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Zhekang Peng
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Hairong Xiao
- Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Miaomiao Sun
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Pei Zhang
- Department of Paediatrics, Jinling Hospital, School of Medicine, Nanjing University, Nanjing 210016, China
| | - Ting Zhou
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xiaobo Yang
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yuan Yu
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Ruiting Li
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xiaojing Zou
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Huaqing Shu
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yang Qiu
- State Key Laboratory of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan Institute of Virology, Wuhan 43007, China
| | - Xi Zhou
- State Key Laboratory of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan Institute of Virology, Wuhan 43007, China
| | - Shiying Yuan
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Shanglong Yao
- Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - You Shang
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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