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Bhale AS, Meilhac O, d'Hellencourt CL, Vijayalakshmi MA, Venkataraman K. Cholesterol transport and beyond: Illuminating the versatile functions of HDL apolipoproteins through structural insights and functional implications. Biofactors 2024. [PMID: 38661230 DOI: 10.1002/biof.2057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Accepted: 04/02/2024] [Indexed: 04/26/2024]
Abstract
High-density lipoproteins (HDLs) play a vital role in lipid metabolism and cardiovascular health, as they are intricately involved in cholesterol transport and inflammation modulation. The proteome of HDL particles is indeed complex and distinct from other components in the bloodstream. Proteomics studies have identified nearly 285 different proteins associated with HDL; however, this review focuses more on the 15 or so traditionally named "apo" lipoproteins. Important lipid metabolizing enzymes closely working with the apolipoproteins are also discussed. Apolipoproteins stand out for their integral role in HDL stability, structure, function, and metabolism. The unique structure and functions of each apolipoprotein influence important processes such as inflammation regulation and lipid metabolism. These interactions also shape the stability and performance of HDL particles. HDLs apolipoproteins have multifaceted roles beyond cardiovascular diseases (CVDs) and are involved in various physiological processes and disease states. Therefore, a detailed exploration of these apolipoproteins can offer valuable insights into potential diagnostic markers and therapeutic targets. This comprehensive review article aims to provide an in-depth understanding of HDL apolipoproteins, highlighting their distinct structures, functions, and contributions to various physiological processes. Exploiting this knowledge holds great potential for improving HDL function, enhancing cholesterol efflux, and modulating inflammatory processes, ultimately benefiting individuals by limiting the risks associated with CVDs and other inflammation-based pathologies. Understanding the nature of all 15 apolipoproteins expands our knowledge of HDL metabolism, sheds light on their pathological implications, and paves the way for advancements in the diagnosis, prevention, and treatment of lipid and inflammatory-related disorders.
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Affiliation(s)
- Aishwarya Sudam Bhale
- Centre for Bio-Separation Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Olivier Meilhac
- Inserm, UMR 1188 Diabète Athérothrombose Thérapies Réunion Océan Indien (DéTROI), Université de La Réunion, Saint-Pierre, France
| | - Christian Lefebvre d'Hellencourt
- Inserm, UMR 1188 Diabète Athérothrombose Thérapies Réunion Océan Indien (DéTROI), Université de La Réunion, Saint-Pierre, France
| | | | - Krishnan Venkataraman
- Centre for Bio-Separation Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
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Kong FS, Huang P, Chen JH, Ma Y. The Novel Insight of Gut Microbiota from Mouse Model to Clinical Patients and the Role of NF-κB Pathway in Polycystic Ovary Syndrome. Reprod Sci 2024:10.1007/s43032-024-01562-3. [PMID: 38653859 DOI: 10.1007/s43032-024-01562-3] [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: 12/21/2023] [Accepted: 04/12/2024] [Indexed: 04/25/2024]
Abstract
Polycystic Ovary Syndrome (PCOS) is a metabolic disorder characterized by hyperandrogenism and related symptoms in women of reproductive age. Emerging evidence suggests that chronic low-grade inflammation plays a significant role in the development of PCOS. The gut microbiota, a complex bacterial ecosystem, has been extensively studied for various diseases, including PCOS, while the underlying mechanisms are not fully understood. This review comprehensively summarizes the changes in gut microbiota and metabolites observed in PCOS and their potential association with the condition. Additionally, we discuss the role of abnormal nuclear factor κB signaling in the pathogenesis of PCOS. These findings offer valuable insights into the mechanisms of PCOS and may pave the way for the development of control and therapeutic strategies for this condition in clinical practice. By bridging the gap between mouse models and clinical patients, this review contributes to a better understanding of the interplay between gut microbiota and inflammation in PCOS, thus paving new ways for future investigations and interventions.
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Affiliation(s)
- Fan-Sheng Kong
- Department of Pediatrics, Affiliated Hospital of Jiangnan University, Wuxi, 214122, Jiangsu, China
- Laboratory of Genomic and Precision Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Panwang Huang
- Department of Pediatrics, Affiliated Hospital of Jiangnan University, Wuxi, 214122, Jiangsu, China
- Laboratory of Genomic and Precision Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Jian-Huan Chen
- Laboratory of Genomic and Precision Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China.
- Joint Primate Research Center for Chronic Diseases, Institute of Zoology of Guangdong Academy of Science, Jiangnan University, Wuxi, Jiangsu, China.
- Jiangnan University Brain Institute, Wuxi, Jiangsu, China.
| | - Yaping Ma
- Department of Pediatrics, Affiliated Hospital of Jiangnan University, Wuxi, 214122, Jiangsu, China.
- Laboratory of Genomic and Precision Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China.
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Aljarrah D, Chalour N, Zorgani A, Nissan T, Pranjol MZI. Exploring the gut microbiota and its potential as a biomarker in gliomas. Biomed Pharmacother 2024; 173:116420. [PMID: 38471271 DOI: 10.1016/j.biopha.2024.116420] [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: 11/27/2023] [Revised: 02/24/2024] [Accepted: 03/07/2024] [Indexed: 03/14/2024] Open
Abstract
Gut microbiome alterations are associated with various cancers including brain tumours such as glioma and glioblastoma. The gut communicates with the brain via a bidirectional pathway known as the gut-brain axis (GBA) which is essential for maintaining homeostasis. The gut microbiota produces many metabolites including short chain fatty acids (SCFAs) and essential amino acids such as glutamate, glutamine, arginine and tryptophan. Through the modulation of these metabolites the gut microbiome is able to regulate several functions of brain cells, immune cells and tumour cells including DNA methylation, mitochondrial function, the aryl hydrocarbon receptor (AhR), T-cell proliferation, autophagy and even apoptosis. Here, we summarise current findings on gut microbiome with respect to brain cancers, an area of research that is widely overlooked. Several studies investigated the relationship between gut microbiota and brain tumours. However, it remains unclear whether the gut microbiome variation is a cause or product of cancer. Subsequently, a biomarker panel was constructed for use as a predictive, prognostic and diagnostic tool with respect to multiple cancers including glioma and glioblastoma multiforme (GBM). This review further presents the intratumoural microbiome, a fascinating microenvironment within the tumour as a possible treatment target that can be manipulated to maximise effectiveness of treatment via personalised therapy. Studies utilising the microbiome as a biomarker and therapeutic strategy are necessary to accurately assess the effectiveness of the gut microbiome as a clinical tool with respect to brain cancers.
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Affiliation(s)
- Dana Aljarrah
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton, UK.
| | - Naima Chalour
- Cognitive and Behavioural Neuroscience laboratory, Houari Boumediene University of Science and Technology, Bab Ezzouar, Algiers, Algeria; Faculty of Biological Sciences, Houari Boumediene University of Science and Technology, Bab Ezzouar, Algiers, Algeria.
| | - Amine Zorgani
- The Microbiome Mavericks, 60 rue Christian Lacouture, Bron 69500, France.
| | - Tracy Nissan
- Department of Molecular Biosciences, the Wenner-Gren Institute, Stockholm University, Stockholm, Sweden.
| | - Md Zahidul I Pranjol
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton, UK.
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Wu Y, Ni T, Zhang M, Fu S, Ren D, Feng Y, Liang H, Zhang Z, Zhao Y, He Y, Yang Y, Tian Z, Yan T, Liu J. Treatment with β-Adrenoceptor Agonist Isoproterenol Reduces Non-parenchymal Cell Responses in LPS/D-GalN-Induced Liver Injury. Inflammation 2024; 47:733-752. [PMID: 38129360 PMCID: PMC11074027 DOI: 10.1007/s10753-023-01941-z] [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: 09/10/2023] [Revised: 11/19/2023] [Accepted: 11/30/2023] [Indexed: 12/23/2023]
Abstract
There is an increasing evidence indicating the involvement of the sympathetic nervous system (SNS) in liver disease development. To achieve an extensive comprehension of the obscure process by which the SNS alleviates inflammatory damage in non-parenchymal liver cells (NPCs) during acute liver failure (ALF), we employ isoproterenol (ISO), a beta-adrenoceptor agonist, to mimic SNS signaling. ISO was administered to C57BL/6J mice to establish an acute liver failure (ALF) model using LPS/D-GalN, which was defined as ISO + ALF. Non-parenchymal cells (NPCs) were isolated from liver tissues and digested for tandem mass tag (TMT) labeled proteomics to identify differentially expressed proteins (DEPs). The administration of ISO resulted in a decreased serum levels of pro-inflammatory cytokines, e.g., TNF-α, IL-1β, and IL-6 in ALF mice, which alleviated liver damage. By using TMT analysis, it was possible to identify 1587 differentially expressed proteins (DEPs) in isolated NPCs. Notably, over 60% of the DEPs in the ISO + ALF vs. ALF comparison were shared in the Con vs. ALF comparison. According to enrichment analysis, the DEPs influenced by ISO in ALF mice were linked to biological functions of heme and fatty acid metabolism, interferon gamma response, TNFA signaling pathway, and mitochondrial oxidation function. Protein-protein interaction network analysis indicated Mapk14 and Caspase3 may serve as potentially valuable indicators of ISO intervention. In addition, the markers on activated macrophages, such as Mapk14, Casp1, Casp8, and Mrc1, were identified downregulated after ISO initiation. ISO treatment increased the abundance of anti-inflammatory markers in mouse macrophages, as evidenced by the immunohistochemistry (IHC) slides showing an increase in Arg + staining and a reduction in iNOS + staining. Furthermore, pretreatment with ISO also resulted in a reduction of LPS-stimulated inflammation signaling markers, Mapk14 and NF-κB, in human THP-1 cells. Prior treatment with ISO may have the potential to modify the biological functions of NPCs and could serve as an innovative pharmacotherapy for delaying the pathogenesis and progression of ALF.
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Affiliation(s)
- Yuchao Wu
- Department of Infectious Diseases and Hepatopathy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
- Department of Radiation Oncology, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Tianzhi Ni
- Department of Infectious Diseases and Hepatopathy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Mengmeng Zhang
- Department of Infectious Diseases and Hepatopathy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
- Honghui Hospital, Xi'an Jiaotong University, Xi'an City, China
| | - Shan Fu
- Department of Infectious Diseases and Hepatopathy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Danfeng Ren
- Department of Infectious Diseases and Hepatopathy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Yali Feng
- Department of Infectious Diseases and Hepatopathy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Huiping Liang
- Department of Radiation Oncology, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Ze Zhang
- Department of Infectious Diseases and Hepatopathy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Yingren Zhao
- Department of Infectious Diseases and Hepatopathy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Yingli He
- Department of Infectious Diseases and Hepatopathy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Yuan Yang
- Department of Infectious Diseases and Hepatopathy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Zhen Tian
- Department of Ultrasound, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, Shaanxi Province, China.
| | - Taotao Yan
- Department of Infectious Diseases and Hepatopathy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China.
| | - Jinfeng Liu
- Department of Infectious Diseases and Hepatopathy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China.
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Bolduan V, Palzer KA, Hieber C, Schunke J, Fichter M, Schneider P, Grabbe S, Pautz A, Bros M. The mRNA-Binding Protein KSRP Limits the Inflammatory Response of Macrophages. Int J Mol Sci 2024; 25:3884. [PMID: 38612694 PMCID: PMC11011855 DOI: 10.3390/ijms25073884] [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: 03/13/2024] [Revised: 03/27/2024] [Accepted: 03/29/2024] [Indexed: 04/14/2024] Open
Abstract
KH-type splicing regulatory protein (KSRP) is a single-stranded nucleic acid-binding protein with multiple functions. It is known to bind AU-rich motifs within the 3'-untranslated region of mRNA species, which in many cases encode dynamically regulated proteins like cytokines. In the present study, we investigated the role of KSRP for the immunophenotype of macrophages using bone marrow-derived macrophages (BMDM) from wild-type (WT) and KSRP-/- mice. RNA sequencing revealed that KSRP-/- BMDM displayed significantly higher mRNA expression levels of genes involved in inflammatory and immune responses, particularly type I interferon responses, following LPS stimulation. In line, time kinetics studies revealed increased levels of interferon-γ (IFN-γ), interleukin (IL)-1β and IL-6 mRNA in KSRP-/- macrophages after 6 h subsequent to LPS stimulation as compared to WT cultures. At the protein level, KSRP-/- BMDM displayed higher levels of these cytokines after overnight stimulation. Matching results were observed for primary peritoneal macrophages of KSRP-/- mice. These showed higher IL-6, tumor necrosis factor-α (TNF-α), C-X-C motif chemokine 1 (CXCL1) and CC-chemokine ligand 5 (CCL5) protein levels in response to LPS stimulation than the WT controls. As macrophages play a key role in sepsis, the in vivo relevance of KSRP deficiency for cytokine/chemokine production was analyzed in an acute inflammation model. In agreement with our in vitro findings, KSRP-deficient animals showed higher cytokine production upon LPS administration in comparison to WT mice. Taken together, these findings demonstrate that KSRP constitutes an important negative regulator of cytokine expression in macrophages.
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Affiliation(s)
- Vanessa Bolduan
- Department of Dermatology, University Medical Center, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Kim-Alicia Palzer
- Department of Pharmacology, University Medical Center, Langenbeckstr. 1, 55131 Mainz, Germany (A.P.)
| | - Christoph Hieber
- Department of Dermatology, University Medical Center, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Jenny Schunke
- Department of Dermatology, University Medical Center, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Michael Fichter
- Department of Dermatology, University Medical Center, Langenbeckstr. 1, 55131 Mainz, Germany
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Paul Schneider
- Department of Dermatology, University Medical Center, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Stephan Grabbe
- Department of Dermatology, University Medical Center, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Andrea Pautz
- Department of Pharmacology, University Medical Center, Langenbeckstr. 1, 55131 Mainz, Germany (A.P.)
| | - Matthias Bros
- Department of Dermatology, University Medical Center, Langenbeckstr. 1, 55131 Mainz, Germany
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56
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da C. Pinaffi-Langley AC, Melia E, Hays FA. Exploring the Gut-Mitochondrial Axis: p66Shc Adapter Protein and Its Implications for Metabolic Disorders. Int J Mol Sci 2024; 25:3656. [PMID: 38612468 PMCID: PMC11011581 DOI: 10.3390/ijms25073656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 03/16/2024] [Accepted: 03/21/2024] [Indexed: 04/14/2024] Open
Abstract
This review investigates the multifaceted role of the p66Shc adaptor protein and the gut microbiota in regulating mitochondrial function and oxidative stress, and their collective impact on the pathogenesis of chronic diseases. The study delves into the molecular mechanisms by which p66Shc influences cellular stress responses through Rac1 activation, Forkhead-type transcription factors inactivation, and mitochondria-mediated apoptosis, alongside modulatory effects of gut microbiota-derived metabolites and endotoxins. Employing an integrative approach, the review synthesizes findings from a broad array of studies, including molecular biology techniques and analyses of microbial metabolites' impacts on host cellular pathways. The results underscore a complex interplay between microbial metabolites, p66Shc activation, and mitochondrial dysfunction, highlighting the significance of the gut microbiome in influencing disease outcomes through oxidative stress pathways. Conclusively, the review posits that targeting the gut microbiota-p66Shc-mitochondrial axis could offer novel therapeutic strategies for mitigating the development and progression of metabolic diseases. This underscores the potential of dietary interventions and microbiota modulation in managing oxidative stress and inflammation, pivotal factors in chronic disease etiology.
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Affiliation(s)
- Ana Clara da C. Pinaffi-Langley
- Department of Nutritional Sciences, College of Allied Health, University of Oklahoma Health Sciences, Oklahoma City, OK 73117, USA; (A.C.d.C.P.-L.); (E.M.)
| | - Elizabeth Melia
- Department of Nutritional Sciences, College of Allied Health, University of Oklahoma Health Sciences, Oklahoma City, OK 73117, USA; (A.C.d.C.P.-L.); (E.M.)
| | - Franklin A. Hays
- Department of Nutritional Sciences, College of Allied Health, University of Oklahoma Health Sciences, Oklahoma City, OK 73117, USA; (A.C.d.C.P.-L.); (E.M.)
- Stephenson Cancer Center, University of Oklahoma Health Sciences, Oklahoma City, OK 73117, USA
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Liu Q, Wang Z, Sun S, Nemes J, Brenner LA, Hoisington A, Skotak M, LaValle CR, Ge Y, Carr W, Haghighi F. Association of Blast Exposure in Military Breaching with Intestinal Permeability Blood Biomarkers Associated with Leaky Gut. Int J Mol Sci 2024; 25:3549. [PMID: 38542520 PMCID: PMC10971443 DOI: 10.3390/ijms25063549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 03/13/2024] [Accepted: 03/18/2024] [Indexed: 04/14/2024] Open
Abstract
Injuries and subclinical effects from exposure to blasts are of significant concern in military operational settings, including tactical training, and are associated with self-reported concussion-like symptomology and physiological changes such as increased intestinal permeability (IP), which was investigated in this study. Time-series gene expression and IP biomarker data were generated from "breachers" exposed to controlled, low-level explosive blast during training. Samples from 30 male participants at pre-, post-, and follow-up blast exposure the next day were assayed via RNA-seq and ELISA. A battery of symptom data was also collected at each of these time points that acutely showed elevated symptom reporting related to headache, concentration, dizziness, and taking longer to think, dissipating ~16 h following blast exposure. Evidence for bacterial translocation into circulation following blast exposure was detected by significant stepwise increase in microbial diversity (measured via alpha-diversity p = 0.049). Alterations in levels of IP protein biomarkers (i.e., Zonulin, LBP, Claudin-3, I-FABP) assessed in a subset of these participants (n = 23) further evidenced blast exposure associates with IP. The observed symptom profile was consistent with mild traumatic brain injury and was further associated with changes in bacterial translocation and intestinal permeability, suggesting that IP may be linked to a decrease in cognitive functioning. These preliminary findings show for the first time within real-world military operational settings that exposures to blast can contribute to IP.
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Affiliation(s)
- Qingkun Liu
- James J. Peters VA Medical Center, Bronx, NY 10468, USA; (Q.L.); (Z.W.); (S.S.)
- Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA;
| | - Zhaoyu Wang
- James J. Peters VA Medical Center, Bronx, NY 10468, USA; (Q.L.); (Z.W.); (S.S.)
- Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA;
| | - Shengnan Sun
- James J. Peters VA Medical Center, Bronx, NY 10468, USA; (Q.L.); (Z.W.); (S.S.)
- Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA;
| | - Jeffrey Nemes
- Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA (C.R.L.); (W.C.)
| | - Lisa A. Brenner
- Rocky Mountain Mental Illness, Research, Education and Clinical Care, Department of Veterans Affairs, Aurora, CO 80045, USA; (L.A.B.); (A.H.)
- Anschutz Medical Campus, University of Colorado, Aurora, CO 80045, USA
| | - Andrew Hoisington
- Rocky Mountain Mental Illness, Research, Education and Clinical Care, Department of Veterans Affairs, Aurora, CO 80045, USA; (L.A.B.); (A.H.)
- Anschutz Medical Campus, University of Colorado, Aurora, CO 80045, USA
- Department of Systems Engineering and Management, Air Force Institute of Technology, Wright-Patterson Air Force Base, OH 45433, USA
| | - Maciej Skotak
- Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA (C.R.L.); (W.C.)
| | - Christina R. LaValle
- Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA (C.R.L.); (W.C.)
| | - Yongchao Ge
- Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA;
| | - Walter Carr
- Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA (C.R.L.); (W.C.)
| | - Fatemeh Haghighi
- James J. Peters VA Medical Center, Bronx, NY 10468, USA; (Q.L.); (Z.W.); (S.S.)
- Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA;
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Shvets Y, Khranovska N, Senchylo N, Ostapchenko D, Tymoshenko I, Onysenko S, Kobyliak N, Falalyeyeva T. Microbiota substances modulate dendritic cells activity: A critical view. Heliyon 2024; 10:e27125. [PMID: 38444507 PMCID: PMC10912702 DOI: 10.1016/j.heliyon.2024.e27125] [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: 11/21/2023] [Revised: 02/23/2024] [Accepted: 02/23/2024] [Indexed: 03/07/2024] Open
Abstract
Contemporary research in the field of microbiota shows that commensal bacteria influence physiological activity of different organs and systems of a human organism, such as brain, lungs, immune and metabolic systems. This influence is realized by various processes. One of them is trough modulation of immune mechanisms. Interactions between microbiota and the human immune system are known to be complex and ambiguous. Dendritic cells (DCs) are unique cells, which initiate the development and polarization of adaptive immune response. These cells also interconnect native and specific immune reactivity. A large set of biochemical signals from microbiota in the form of different microbiota associated molecular patterns (MAMPs) and bacterial metabolites that act locally and distantly in the human organism. As a result, commensal bacteria influence the maturity and activity of dendritic cells and affect the overall immune reactivity of the human organism. It then determines the response to pathogenic microorganisms, inflammation, associated with different pathological conditions and even affects the effectiveness of vaccination.
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Affiliation(s)
- Yuliia Shvets
- Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Str., Kyiv, Ukraine
| | - Natalia Khranovska
- National Cancer Institute of Ukraine, 33/43 Yuliia Zdanovska Str., Kyiv, Ukraine
| | - Natalia Senchylo
- Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Str., Kyiv, Ukraine
| | - Danylo Ostapchenko
- Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Str., Kyiv, Ukraine
| | - Iryna Tymoshenko
- Bogomolets National Medical University, 13 Shevchenka Blvd., Kyiv, Ukraine
| | - Svitlana Onysenko
- Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Str., Kyiv, Ukraine
| | - Nazarii Kobyliak
- Bogomolets National Medical University, 13 Shevchenka Blvd., Kyiv, Ukraine
- Medical Laboratory CSD, 22b Zhmerynska Str., Kyiv, Ukraine
| | - Tetyana Falalyeyeva
- Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Str., Kyiv, Ukraine
- Medical Laboratory CSD, 22b Zhmerynska Str., Kyiv, Ukraine
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Chai R, Zhou C, Hu Z, Hu J. Diagnostic predictability of serum miR-4793-3p and miR-1180-3p expression in community-acquired pneumonia. Biomark Med 2024; 18:231-241. [PMID: 38456294 PMCID: PMC11216277 DOI: 10.2217/bmm-2023-0463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Accepted: 12/07/2023] [Indexed: 03/09/2024] Open
Abstract
Background: Early identification of community-acquired pneumonia (CAP) is crucial to prevent severe progression. Methods: The authors enrolled 150 hospitalized CAP patients and collected clinicopathologic features and blood indicators. Plasma miRNA profiling was conducted using microarray detection, and selected miRNAs were tested with reverse transcription quantitative PCR. Predictive models were built using least shrinkage and selection operator regression. Results: Least shrinkage and selection operator regression identified two miRNAs (miR-4793-3p and miR-1180-3p) that distinguished mild from severe CAP patients (area under the curve = 0.948). The miRNA model outperformed D-dimer, platelet and procalcitonin (max area under the curve = 0.729). Conclusion: Increased levels of miR-4793-3p and miR-1180-3p may indicate severe pneumonia development. Plasma miRNA profiling enables early prediction of severe CAP, aiding therapeutic decisions.
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Affiliation(s)
- Rong Chai
- Department of Respiratory & Critical Care Medicine, Changhai Hospital, Navy Military Medical University, No. 168 Changhai RD, Yangpu District, Shanghai, P.R. China
| | - Cihang Zhou
- Department of General Practice Teaching & Research Office, Changhai Hospital, Navy Military Medical University, No. 168 Changhai RD, Yangpu District, Shanghai, P.R. China
| | - Zhenli Hu
- Department of Respiratory & Critical Care Medicine, Changhai Hospital, Navy Military Medical University, No. 168 Changhai RD, Yangpu District, Shanghai, P.R. China
| | - Jingjing Hu
- Department of Clinical Laboratory, Changhai Hospital, Navy Military Medical University, No. 168 Changhai RD, Yangpu District, Shanghai, P.R. China
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Gentile A, Fulgione A, Auzino B, Iovane V, Gallo D, Garramone R, Iaccarino N, Randazzo A, Iovane G, Cuomo P, Capparelli R, Iannelli D. In vivo biological validation of in silico analysis: A novel approach for predicting the effects of TLR4 exon 3 polymorphisms on brucellosis. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2024; 118:105552. [PMID: 38218390 DOI: 10.1016/j.meegid.2024.105552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 01/15/2024]
Abstract
The role of the Toll-like receptor 4 (TLR4) is of recognising intracellular and extracellular pathogens and of activating the immune response. This process can be compromised by single nucleotide polymorphisms (SNPs) which might affect the activity of several TLRs. The aim of this study is of ascertaining whether SNPs in the TLR4 of Bubalus bubalis infected by Brucella abortus, compromise the protein functionality. For this purpose, a computational analysis was performed. Next, computational predictions were confirmed by performing genotyping analysis. Finally, NMR-based metabolomics analysis was performed to identify potential biomarkers for brucellosis. The results indicate two SNPs (c. 672 A > C and c. 902 G > C) as risk factor for brucellosis in Bubalus bubalis, and three metabolites (lactate, 3-hydroxybutyrate and acetate) as biological markers for predicting the risk of developing the disease. These metabolites, together with TLR4 structural modifications in the MD2 interaction domain, are a clear signature of the immune system alteration during diverse Gram-negative bacterial infections. This suggests the possibility to extend this study to other pathogens, including Mycobacterium tuberculosis. In conclusion, this study combines multidisciplinary approaches to evaluate the biological and structural effects of SNPs on protein function.
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Affiliation(s)
- Antonio Gentile
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples 80055, Italy
| | - Andrea Fulgione
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples 80055, Italy
| | - Barbara Auzino
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples 80055, Italy
| | - Valentina Iovane
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples 80055, Italy
| | - Daniela Gallo
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples 80055, Italy
| | - Raffaele Garramone
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples 80055, Italy
| | - Nunzia Iaccarino
- Department of Pharmacy, University of Naples Federico II, Naples 80131, Italy
| | - Antonio Randazzo
- Department of Pharmacy, University of Naples Federico II, Naples 80131, Italy
| | - Giuseppe Iovane
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, Naples 80137, Italy
| | - Paola Cuomo
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples 80055, Italy
| | - Rosanna Capparelli
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples 80055, Italy.
| | - Domenico Iannelli
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples 80055, Italy
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Zhu X, Bai B, Ge X, Zheng B, Xiao Z, Tang Y, Fang L, Tang Y, Dai Y, Zhang B, Zhang Y. Costunolide attenuates LPS-induced inflammation and lung injury through inhibiting IKK/NF-κB signaling. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:1601-1610. [PMID: 37688623 DOI: 10.1007/s00210-023-02705-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 08/30/2023] [Indexed: 09/11/2023]
Abstract
Inflammation is an important pathological process of many acute and chronic diseases, such as sepsis, arthritis, and cancer. Many factors can lead to an inflammatory state of the body, among which bacterial infection plays an important role. Bacterial infection often leads to sepsis, acute lung injury (ALI), or its more serious form of acute respiratory distress syndrome, which are the main fatal diseases in intensive care units. Costunolide has been reported to possess excellent anti-inflammatory activity; however, whether it can affect inflammation induced by gram-negative bacterial is still unclear. Lipopolysaccharide (LPS) stimulated mouse peritoneal macrophages (MPMs) to release proinflammatory cytokines was used as the cell model. The mouse model of sepsis and ALI was built through injecting intravenously and intratracheally of LPS. In the present study, costunolide inhibited LPS-induced inflammatory response through IKK/NF-κB signaling pathway in macrophages. In vivo, costunolide attenuated LPS-induced septic death in mice. Meanwhile, costunolide treatment alleviated LPS-induced lung injury and inflammation via inhibiting the infiltration of inflammatory cells and the expression of inflammatory cytokines. Taken together, these results demonstrated that costunolide could attenuate gram-negative bacterial induced inflammation and diseases and might be a potential candidate for the treatment of inflammatory diseases.
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Affiliation(s)
- Xiaona Zhu
- Affiliated Yueqing Hospital, Wenzhou Medical University, Wenzhou, 325600, Zhejiang, China
| | - Bin Bai
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Xiangting Ge
- Department of Pulmonary and Critical Care Medicine, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China
| | - Bin Zheng
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Zhongxiang Xiao
- Affiliated Yueqing Hospital, Wenzhou Medical University, Wenzhou, 325600, Zhejiang, China
| | - Yue Tang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Letong Fang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Yelin Tang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Yuanrong Dai
- Department of Pulmonary and Critical Care Medicine, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China.
| | - Bing Zhang
- Affiliated Yueqing Hospital, Wenzhou Medical University, Wenzhou, 325600, Zhejiang, China.
| | - Yali Zhang
- Affiliated Yueqing Hospital, Wenzhou Medical University, Wenzhou, 325600, Zhejiang, China.
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China.
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Jeong B, Pahan K. IL-12p40 Monomer: A Potential Player in Macrophage Regulation. IMMUNO 2024; 4:77-90. [PMID: 38435456 PMCID: PMC10907066 DOI: 10.3390/immuno4010005] [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] [Indexed: 03/05/2024] Open
Abstract
Macrophages are myeloid phagocytic leukocytes whose functions are to protect against infections, mediate T-cell responses, and maintain tissue homeostasis. IL-12p40 monomer is a cytokine that is largely produced by macrophages, and it has, for the longest time, been considered a largely non-functional cytokine of the IL-12 family. However, new research has emerged that demonstrates that this p40 monomer may play a bigger role in shaping immune environments. To shed light on the specific effects of p40 monomer on macrophages and their surrounding environment, we showed, through cell culture studies, qPCR, ELISA, and immunofluorescence analyses, that the direct administration of recombinant p40 monomer to RAW 264.7 cells and primary lung macrophages stimulated the production of both pro-inflammatory (TNFα) and anti-inflammatory (IL-10) signals. Accordingly, p40 monomer prevented the full pro-inflammatory effects of LPS, and the neutralization of p40 monomer by mAb a3-3a stimulated the pro-inflammatory effects of LPS. Furthermore, we demonstrated that the intranasal administration of p40 monomer upregulated TNFα+IL-10+ macrophages in vivo in the lungs of mice. Collectively, these results indicate an important immunoregulatory function of p40 monomer in the upregulation of both pro- and anti-inflammatory molecules in macrophages.
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Affiliation(s)
- Brian Jeong
- Department of Neurological Sciences, Rush University Medical Center, Chicago, IL 60612, USA
| | - Kalipada Pahan
- Department of Neurological Sciences, Rush University Medical Center, Chicago, IL 60612, USA
- Division of Research and Development, Jesse Brown Veterans Affairs Medical Center, Chicago, IL 60612, USA
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63
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Bartels YL, van Lent PLEM, van der Kraan PM, Blom AB, Bonger KM, van den Bosch MHJ. Inhibition of TLR4 signalling to dampen joint inflammation in osteoarthritis. Rheumatology (Oxford) 2024; 63:608-618. [PMID: 37788083 PMCID: PMC10907820 DOI: 10.1093/rheumatology/kead493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 08/23/2023] [Accepted: 08/29/2023] [Indexed: 10/05/2023] Open
Abstract
Local and systemic low-grade inflammation, mainly involving the innate immune system, plays an important role in the development of OA. A receptor playing a key role in initiation of this inflammation is the pattern-recognition receptor Toll-like receptor 4 (TLR4). In the joint, various ligands for TLR4, many of which are damage-associated molecular patterns (DAMPs), are present that can activate TLR4 signalling. This leads to the production of pro-inflammatory and catabolic mediators that cause joint damage. In this narrative review, we will first discuss the involvement of TLR4 ligands and signalling in OA. Furthermore, we will provide an overview of methods for inhibit, TLR4 signalling by RNA interference, neutralizing anti-TLR4 antibodies, small molecules and inhibitors targeting the TLR4 co-receptor MD2. Finally, we will focus on possible applications and challenges of these strategies in the dampening of inflammation in OA.
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Affiliation(s)
- Yvonne L Bartels
- Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Peter L E M van Lent
- Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Peter M van der Kraan
- Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Arjen B Blom
- Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Kimberly M Bonger
- Synthetic Organic Chemistry, Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
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Qian JF, Liang SQ, Wang QY, Xu JC, Luo W, Huang WJ, Wu GJ, Liang G. Isoproterenol induces MD2 activation by β-AR-cAMP-PKA-ROS signalling axis in cardiomyocytes and macrophages drives inflammatory heart failure. Acta Pharmacol Sin 2024; 45:531-544. [PMID: 37919475 PMCID: PMC10834947 DOI: 10.1038/s41401-023-01179-3] [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: 03/01/2023] [Accepted: 09/29/2023] [Indexed: 11/04/2023] Open
Abstract
Cardiac inflammation contributes to heart failure (HF) induced by isoproterenol (ISO) through activating β-adrenergic receptors (β-AR). Recent evidence shows that myeloid differentiation factor 2 (MD2), a key protein in endotoxin-induced inflammation, mediates inflammatory heart diseases. In this study, we investigated the role of MD2 in ISO-β-AR-induced heart injuries and HF. Mice were infused with ISO (30 mg·kg-1·d-1) via osmotic mini-pumps for 2 weeks. We showed that MD2 in cardiomyocytes and cardiac macrophages was significantly increased and activated in the heart tissues of ISO-challenged mice. Either MD2 knockout or administration of MD2 inhibitor L6H21 (10 mg/kg every 2 days, i.g.) could prevent mouse hearts from ISO-induced inflammation, remodelling and dysfunction. Bone marrow transplantation study revealed that both cardiomyocyte MD2 and bone marrow-derived macrophage MD2 contributed to ISO-induced cardiac inflammation and injuries. In ISO-treated H9c2 cardiomyocyte-like cells, neonatal rat primary cardiomyocytes and primary mouse peritoneal macrophages, MD2 knockout or pre-treatment with L6H21 (10 μM) alleviated ISO-induced inflammatory responses, and the conditioned medium from ISO-challenged macrophages promoted the hypertrophy and fibrosis in cardiomyocytes and fibroblasts. We demonstrated that ISO induced MD2 activation in cardiomyocytes via β1-AR-cAMP-PKA-ROS signalling axis, and induced inflammatory responses in macrophages via β2-AR-cAMP-PKA-ROS axis. This study identifies MD2 as a key inflammatory mediator and a promising therapeutic target for ISO-induced heart failure.
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Affiliation(s)
- Jin-Fu Qian
- Department of Cardiology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325035, China
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Shi-Qi Liang
- Department of Cardiology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325035, China
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Qin-Yan Wang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Jia-Chen Xu
- Department of Cardiology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325035, China
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Wu Luo
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
- Medical Research Center, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325035, China
| | - Wei-Jian Huang
- Department of Cardiology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325035, China
| | - Gao-Jun Wu
- Department of Cardiology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325035, China.
| | - Guang Liang
- Department of Cardiology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325035, China.
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
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Violi F, Pastori D, Pignatelli P, Cammisotto V. Endotoxemia and Platelets: 2 Players of Intrahepatic Microthrombosis in NAFLD. JACC Basic Transl Sci 2024; 9:404-413. [PMID: 38559621 PMCID: PMC10978333 DOI: 10.1016/j.jacbts.2023.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/31/2023] [Accepted: 07/05/2023] [Indexed: 04/04/2024]
Abstract
Gut dysbiosis-related intestinal barrier dysfunction with increased translocation of bacterial products such as lipopolysaccharide (LPS) into systemic circulation is emerging as pathogenic factor of nonalcoholic fatty liver disease (NAFLD). Experimental and clinical studies suggested a potential role of LPS as a trigger eliciting in situ liver inflammation upon interaction with its receptor toll-like receptor 4. Also, LPS has been reported to prime platelets to respond to the common agonists indicating that it behaves as a prothrombotic molecule. Of note, recent studies suggested platelet-related intrahepatic thrombosis triggered by LPS as a mechanism implicated in the process of liver inflammation. This review describes: 1) the impact of gut barrier dysfunction and endotoxemia in the process of NAFLD; 2) the relationship between endotoxemia and platelet activation in NAFLD; 3) clinical evidence for the use of antiplatelet drugs in NAFLD/nonalcoholic steatohepatitis patients; and 4) the potential therapeutic approach to modulate endotoxemia and eventually platelet activation.
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Affiliation(s)
| | - Daniele Pastori
- Department of Clinical Internal, Anaesthesiologic and Cardiovascular Sciences, Sapienza University of Rome, Rome, Italy
| | - Pasquale Pignatelli
- Mediterranea Cardiocentro-Napoli, Naples, Italy
- Department of Clinical Internal, Anaesthesiologic and Cardiovascular Sciences, Sapienza University of Rome, Rome, Italy
| | - Vittoria Cammisotto
- Department of Clinical Internal, Anaesthesiologic and Cardiovascular Sciences, Sapienza University of Rome, Rome, Italy
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Kumar BS. Recent Developments and Application of Mass Spectrometry Imaging in N-Glycosylation Studies: An Overview. Mass Spectrom (Tokyo) 2024; 13:A0142. [PMID: 38435075 PMCID: PMC10904931 DOI: 10.5702/massspectrometry.a0142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 01/06/2024] [Indexed: 03/05/2024] Open
Abstract
Among the most typical posttranslational modifications is glycosylation, which often involves the covalent binding of an oligosaccharide (glycan) to either an asparagine (N-linked) or a serine/threonine (O-linked) residue. Studies imply that the N-glycan portion of a glycoprotein could serve as a particular disease biomarker rather than the protein itself because N-linked glycans have been widely recognized to evolve with the advancement of tumors and other diseases. N-glycans found on protein asparagine sites have been especially significant. Since N-glycans play clearly defined functions in the folding of proteins, cellular transport, and transmission of signals, modifications to them have been linked to several illnesses. However, because these N-glycans' production is not template driven, they have a substantial morphological range, rendering it difficult to distinguish the species that are most relevant to biology and medicine using standard techniques. Mass spectrometry (MS) techniques have emerged as effective analytical tools for investigating the role of glycosylation in health and illness. This is due to developments in MS equipment, data collection, and sample handling techniques. By recording the spatial dimension of a glycan's distribution in situ, mass spectrometry imaging (MSI) builds atop existing methods while offering added knowledge concerning the structure and functionality of biomolecules. In this review article, we address the current development of glycan MSI, starting with the most used tissue imaging techniques and ionization sources before proceeding on to a discussion on applications and concluding with implications for clinical research.
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67
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Yang J, Liu W, Han X, Hao X, Yao Q, Du W. Gut microbiota modulation enhances the immune capacity of lizards under climate warming. MICROBIOME 2024; 12:37. [PMID: 38388458 PMCID: PMC10882899 DOI: 10.1186/s40168-023-01736-2] [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: 09/27/2023] [Accepted: 12/04/2023] [Indexed: 02/24/2024]
Abstract
BACKGROUND Host-microbial interactions are expected to affect species' adaptability to climate change but have rarely been explored in ectothermic animals. Some studies have shown that short-term warming reduced gut microbial diversity that could hamper host functional performance. RESULTS However, our longitudinal experiments in semi-natural conditions demonstrated that warming decreased gut microbiota diversity at 2 months, but increased diversity at 13 and 27 months in a desert lizard (Eremias multiocellata). Simultaneously, long-term warming significantly increased the antibacterial activity of serum, immune responses (higher expression of intestinal immune-related genes), and the concentration of short-chain fatty acids (thereby intestinal barrier and immunity) in the lizard. Fecal microbiota transplant experiments further revealed that increased diversity of gut microbiota significantly enhanced antibacterial activity and the immune response of lizards. More specifically, the enhanced immunity is likely due to the higher relative abundance of Bacteroides in warming lizards, given that the bacteria of Bacteroides fragilis regulated IFN-β expression to increase the immune response of lizards under a warming climate. CONCLUSIONS Our study suggests that gut microbiota can help ectotherms cope with climate warming by enhancing host immune response, and highlights the importance of long-term studies on host-microbial interactions and their biological impacts.
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Affiliation(s)
- Jing Yang
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Weiqiang Liu
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xingzhi Han
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- College of Wildlife and Protected Areas, Northeast Forestry University, Harbin, 150040, China
| | - Xin Hao
- School of Tropical Agriculture and Forestry (School of Agricultural and Rural, School of Rural Revitalization), Hainan University, Danzhou, 571737, China
| | - Qibin Yao
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Weiguo Du
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
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da Silva AAF, Fiadeiro MB, Bernardino LI, Fonseca CSP, Baltazar GMF, Cristóvão ACB. "Lipopolysaccharide-induced animal models for neuroinflammation - An overview.". J Neuroimmunol 2024; 387:578273. [PMID: 38183948 DOI: 10.1016/j.jneuroim.2023.578273] [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: 03/02/2023] [Revised: 11/07/2023] [Accepted: 11/29/2023] [Indexed: 01/08/2024]
Abstract
Neuroinflammation is a pathological mechanism contributing to neurodegenerative diseases. For in-depth studies of neuroinflammation, several animal models reported reproducing behavioral dysfunctions and cellular pathological mechanisms induced by brain inflammation. One of the most popular models of neuroinflammation is the one generated by lipopolysaccharide exposure. Despite its importance, the reported results using this model show high heterogeneity, making it difficult to analyze and compare the outcomes between studies. Therefore, the current review aims to summarize the different experimental paradigms used to reproduce neuroinflammation by lipopolysaccharide exposure and its respective outcomes, helping to choose the model that better suits each specific research aim.
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Affiliation(s)
- Ana Alexandra Flores da Silva
- CICS-UBI - Health Sciences Research Center, University of Beira Interior, Covilhã, Portugal; NeuroSoV/Fastprinciple-Lda, UBIMedical, Universidade da Beira Interior, Covilhã, Portugal
| | - Mariana Bernardo Fiadeiro
- CICS-UBI - Health Sciences Research Center, University of Beira Interior, Covilhã, Portugal; NeuroSoV/Fastprinciple-Lda, UBIMedical, Universidade da Beira Interior, Covilhã, Portugal
| | | | | | | | - Ana Clara Braz Cristóvão
- CICS-UBI - Health Sciences Research Center, University of Beira Interior, Covilhã, Portugal; NeuroSoV/Fastprinciple-Lda, UBIMedical, Universidade da Beira Interior, Covilhã, Portugal.
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Liu J, Yan P, Li Y, Yu J, Huang Y, Bai R, Liu M, Wang N, Liu L, Zhu J, Xiao J, Guo L, Liu G, Zhang F, Yang X, He B, Zeng J, Zeng X. Gut microbiota and serum metabolome reveal the mechanism by which TCM polysaccharides alleviate salpingitis in laying hens challenged by bacteria. Poult Sci 2024; 103:103288. [PMID: 38064885 PMCID: PMC10749910 DOI: 10.1016/j.psj.2023.103288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/12/2023] [Accepted: 11/13/2023] [Indexed: 12/29/2023] Open
Abstract
This paper aimed to evaluate the effect of 3 kinds of TCM polysaccharides instead of antibiotics in preventing salpingitis in laying hens. After feeding the laying hens with Lotus leaf polysaccharide, Poria polysaccharide, and Epimedium polysaccharide, mixed bacteria (E. coli and Staphylococcus aureus) were used to infect the oviduct to establish an inflammation model. Changes in antioxidant, serum immunity, anti-inflammatory, gut microbiota, and serum metabolites were evaluated. The results showed that the 3 TCM polysaccharides could increase the expression of antioxidant markers SOD, GSH, and CAT, and reduce the accumulation of MDA in the liver; the contents of IgA and IgM in serum were increased. Decreased the mRNA expression of TLR4, NFκB, TNF-α, IFN-γ, IL1β, IL6, and IL8, and increased the mRNA expression of anti-inflammatory factor IL5 in oviduct tissue. 16sRNA high-throughput sequencing revealed that the 3 TCM polysaccharides improved the intestinal flora disturbance caused by bacterial infection, increased the abundance of beneficial bacteria such as Bacteroides and Actinobacillus, and decreased the abundance of harmful bacteria such as Romboutsia, Turicibacter, and Streptococcus. Metabolomics showed that the 3 TCM polysaccharides could increase the content of metabolites such as 3-hydroxybutyric acid and isobutyl-L-carnitine, and these results could alleviate the further development of salpingitis. In conclusion, the present study has found that using TCM polysaccharides instead of antibiotics was a feasible way to prevent bacterial salpingitis in laying hens, which might make preventing this disease no longer an issue for breeding laying hens.
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Affiliation(s)
- Jiali Liu
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Pupu Yan
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Yana Li
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Jie Yu
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Yongxi Huang
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Ruonan Bai
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Man Liu
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Ning Wang
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Lian Liu
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Jun Zhu
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Junhao Xiao
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Liwei Guo
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China.
| | - Guoping Liu
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Fuxian Zhang
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Xiaolin Yang
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Bin He
- Institute of Animal Husbandry and Veterinary Medicine, Wuhan Academy of Agricultural Sciences, Wuhan, Hubei, China
| | - Jianguo Zeng
- College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan, China
| | - Xiaoqin Zeng
- The First Affiliated Hospital of Yangtze University, Jingzhou, Hubei, China
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Xia R, Shan Y, Luo S, Li J, Liu Y. CIRC_0033530 KNOCKDOWN ALLEVIATES LIPOPOLYSACCHARIDE-INDUCED ACUTE LUNG INJURY MODEL OF HUMAN LUNG FIBROBLASTS BY MIR-1184/TLR4 AXIS. Shock 2024; 61:215-222. [PMID: 37962954 DOI: 10.1097/shk.0000000000002270] [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: 11/16/2023]
Abstract
ABSTRACT Background: Circular RNAs have been reported to be involved in regulating the progression of sepsis and sepsis-associated damage. Herein, this work investigated whether circ_0033530 had roles in the process of septic acute lung injury (sepsis-ALI) and its associated mechanism. Methods: Lipopolysaccharide (LPS)-stimulated human lung fibroblasts MRC-5 were used to mimic the cell model of sepsis-ALI in vitro . Levels of genes and proteins were detected by quantitative real-time polymerase chain reaction and Western blotting. Functional experiments were conducted using 5-ethynyl-2'-deoxyuridine assay, Cell Counting Kit-8 assay, flow cytometry, and enzyme-linked immunosorbent assay. The interaction between miR-1184 and circ_0033530 or toll-like receptor 4 (TLR4) was confirmed by dual-luciferase reporter and RNA immunoprecipitation assays. Results: Circ_0033530 expression was lower in sepsis patients and LPS-induced fibroblasts than those in healthy control and untreated cells. Functionally, knockdown of circ_0033530 protected fibroblasts against LPS-induced proliferation arrest, apoptosis, and inflammatory response. Mechanistically, circ_0033530 acted as a sponge for miR-1184, and TLR4 RNA was targeted by miR-1184, indicating the circ_0033530/miR-1184/TLR4 axis. Further rescue experiments showed that circ_0033530 silencing-mediated growth inhibition and inflammation on fibroblasts were attenuated by miR-1184 downregulation or TLR4 upregulation. Conclusion: Circ_0033530 knockdown alleviated LPS-induced proliferation arrest, apoptosis, and inflammation in lung fibroblasts by miR-1184/TLR4 axis, and provided molecular theoretical basis for circ_0033530 on the pathogenesis of sepsis-ALI.
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Affiliation(s)
- Rui Xia
- Synthesize Intensive Care Unit, Zhumadian Central Hospital, Zhumadian 463000, China
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71
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Rodrigues SG, van der Merwe S, Krag A, Wiest R. Gut-liver axis: Pathophysiological concepts and medical perspective in chronic liver diseases. Semin Immunol 2024; 71:101859. [PMID: 38219459 DOI: 10.1016/j.smim.2023.101859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 10/11/2023] [Accepted: 12/04/2023] [Indexed: 01/16/2024]
Affiliation(s)
- Susana G Rodrigues
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Schalk van der Merwe
- Department of Gastroenterology and Hepatology, University hospital Gasthuisberg, University of Leuven, Belgium
| | - Aleksander Krag
- Institute of Clinical Research, University of Southern Denmark, Odense, Denmark; Centre for Liver Research, Department of Gastroenterology and Hepatology, Odense University Hospital, Odense, Denmark, University of Southern Denmark, Odense, Denmark
| | - Reiner Wiest
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, Switzerland.
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Li R, Song M, Zheng Y, Zhang J, Zhang S, Fan X. Naoxueshu oral liquid promotes hematoma absorption by targeting CD36 in M2 microglia via TLR4/MyD88/NF-κB signaling pathway in rats with intracerebral hemorrhage. JOURNAL OF ETHNOPHARMACOLOGY 2024; 319:117116. [PMID: 37659762 DOI: 10.1016/j.jep.2023.117116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 08/25/2023] [Accepted: 08/30/2023] [Indexed: 09/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Intracerebral hemorrhage (ICH) is a major public health issue that leads to elevated rates of death and disability and has few proven treatments. Naoxueshu oral liquid (NXS), a TCM patent drug, is widely used in patients with ICH. Although a series of clinical studies have confirmed the efficacy and safety of NXS, the underlying mechanism of hematoma absorption is unclear. AIM OF THE STUDY Our work aimed to elucidate the effect and mechanism of NXS on hematoma absorption in rats with ICH. MATERIALS AND METHODS Induction of ICH model in the rats with intracerebral injection of collagenase VII, followed by treatment with NXS and Edaravone as a control neuroprotection medication. Neural functional recovery was assessed using mNSS, foot fault test, corner test, forelimb grip-traction test, and adhesive removal test. Hematoma absorption was assessed by the spectrophotometric hemoglobin assay with Drabkin's reagent. The protein expression of CD36, M2 microglia marker (CD206 and YM-1) and TLR4/MyD88/NF-κB pathway related proteins were determined by Western blot and immunofluorescence. RESULTS NXS could significantly ameliorate the ICH recovery of neural and locomotor function as well as reduce hemorrhage volume. NXS could increase the expression of CD36 expressed in M2 microglia and promote M2 microglia polarization. Simultaneously, NXS significantly suppressed protein expressions of TLR4, MyD88, and NF-κB following ICH in rats. The results indicated that lipopolysaccharide (LPS), TLR4 specific agonist, could partially reverse the change in ICH rats administrated with NXS. CONCLUSIONS NXS promotes hematoma absorption by targeting CD36 expression in M2 microglia via TLR4/MyD88/NF-κB signaling pathway in rats with ICH. Collectively, current research provides a novel theoretical basis for the clinical application of NXS.
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Affiliation(s)
- Ruoqi Li
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Meiying Song
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Yingyi Zheng
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Jiaxue Zhang
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Shanshan Zhang
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Xiang Fan
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China; Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, China.
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Lu H, Zhang H, Wu Z, Li L. Microbiota-gut-liver-brain axis and hepatic encephalopathy. MICROBIOME RESEARCH REPORTS 2024; 3:17. [PMID: 38841407 PMCID: PMC11149093 DOI: 10.20517/mrr.2023.44] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 01/16/2024] [Accepted: 01/19/2024] [Indexed: 06/07/2024]
Abstract
Hepatic encephalopathy (HE) is a clinical manifestation of neurological and psychiatric abnormalities that are caused by complications of liver dysfunction including hyperammonemia, hyperuricemia, and portal hypertension. Accumulating evidence suggests that HE could be reversed through therapeutic modifications of gut microbiota. Multiple preclinical and clinical studies have indicated that gut microbiome affects the physiological function of the liver, such as the regulation of metabolism, secretion, and immunity, through the gut-liver crosstalk. In addition, gut microbiota also influences the brain through the gut-brain crosstalk, altering its physiological functions including the regulation of the immune, neuroendocrine, and vagal pathways. Thus, key molecules that are involved in the microbiota-gut-liver-brain axis might be able to serve as clinical biomarkers for early diagnosis of HE, and could be effective therapeutic targets for clinical interventions. In this review, we summarize the pathophysiology of HE and further propose approaches modulating the microbiota-gut-liver-brain axis in order to provide a comprehensive understanding of the prevention and potential clinical treatment for HE with a microbiota-targeted therapy.
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Affiliation(s)
| | | | | | - Lanjuan Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, Zhejiang, China
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Getachew B, Hauser SR, Bennani S, El Kouhen N, Sari Y, Tizabi Y. Adolescent alcohol drinking interaction with the gut microbiome: implications for adult alcohol use disorder. ADVANCES IN DRUG AND ALCOHOL RESEARCH 2024; 4:11881. [PMID: 38322648 PMCID: PMC10846679 DOI: 10.3389/adar.2024.11881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Reciprocal communication between the gut microbiota and the brain, commonly referred to as the "gut-brain-axis" is crucial in maintaining overall physiological homeostasis. Gut microbiota development and brain maturation (neuronal connectivity and plasticity) appear to be synchronized and to follow the same timeline during childhood (immature), adolescence (expansion) and adulthood (completion). It is important to note that the mesolimbic reward circuitry develops early on, whereas the maturation of the inhibitory frontal cortical neurons is delayed. This imbalance can lead to increased acquirement of reward-seeking and risk-taking behaviors during adolescence, and consequently eventuate in heightened risk for substance abuse. Thus, there is high initiation of alcohol drinking in early adolescence that significantly increases the risk of alcohol use disorder (AUD) in adulthood. The underlying causes for heightened AUD risk are not well understood. It is suggested that alcohol-associated gut microbiota impairment during adolescence plays a key role in AUD neurodevelopment in adulthood. Furthermore, alcohol-induced dysregulation of microglia, either directly or indirectly through interaction with gut microbiota, may be a critical neuroinflammatory pathway leading to neurodevelopmental impairments and AUD. In this review article, we highlight the influence of adolescent alcohol drinking on gut microbiota, gut-brain axis and microglia, and eventual manifestation of AUD. Furthermore, novel therapeutic interventions via gut microbiota manipulations are discussed briefly.
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Affiliation(s)
- Bruk Getachew
- Department of Pharmacology, Howard University College of Medicine, Washington, DC, United States
| | - Sheketha R. Hauser
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Samia Bennani
- Faculty of Medicine and Pharmacy of Casablanca, Hassan II University, Casablanca, Morocco
| | - Nacer El Kouhen
- Faculty of Medicine and Pharmacy of Casablanca, Hassan II University, Casablanca, Morocco
| | - Youssef Sari
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, University of Toledo, Toledo, OH, United States
| | - Yousef Tizabi
- Department of Pharmacology, Howard University College of Medicine, Washington, DC, United States
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Kusakabe N, Kamijo TC, Wada N, Chiba H, Shinohara N, Miyazato M. Effects of low-intensity extracorporeal shock wave therapy on lipopolysaccharide cystitis in a rat model of interstitial cystitis/bladder pain syndrome. Int Urol Nephrol 2024; 56:77-86. [PMID: 37668867 DOI: 10.1007/s11255-023-03770-3] [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: 06/17/2023] [Accepted: 08/26/2023] [Indexed: 09/06/2023]
Abstract
PURPOSE To investigate the effect of low-intensity extracorporeal shock wave therapy (LiESWT) on lipopolysaccharide (LPS)-induced cystitis in an animal model of interstitial cystitis/bladder pain syndrome (IC/BPS). METHODS Sprague-Dawley rats were divided into three groups: control, cystitis (LPS group, intravesical injection of LPS (1 mg) twice), and cystitis with LiESWT (LiESWT group). On the third and fourth days, LiESWT was administered (0.12 mJ/mm2, 300 shots each time) on the lower abdomen toward the bladder. On the seventh day, the rats underwent pain assessment and a metabolic cage study. Subsequently, a continuous cystometrogram (CMG) was performed under urethane anaesthesia. Immunohistochemical studies were also performed, including S-100 staining, an immunohistochemical marker of Schwann cells in the bladder. RESULTS In the LPS group, the pain threshold in the lower abdomen was significantly lower than that in the control group. In the metabolic cage study, the mean voided volume in the LPS group significantly increased. The CMG also revealed a significant decrease in bladder contraction amplitude, compatible with detrusor underactivity in the LPS group. Immunohistochemical studies showed inflammatory changes in the submucosa, increased fibrosis, and decreased S-100 stain-positive areas in the muscle layer of the LPS group. In the LiESWT group, tactile allodynia and bladder function were ameliorated, and S-100 stain-positive areas were increased. CONCLUSION By restoring nerve damage, LiESWT improved lower abdominal pain sensitivity and bladder function in an LPS-induced cystitis rat model. This study suggests that LiESWT may be a new therapeutic modality for IC/BPS.
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Affiliation(s)
- Naohisa Kusakabe
- Department of System Physiology, Graduate School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa, 903-0215, Japan
- Department of Renal and Genitourinary Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Tadanobu Chuyo Kamijo
- Department of System Physiology, Graduate School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa, 903-0215, Japan
| | - Naoki Wada
- Department of Pathology and Oncology, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Hiroki Chiba
- Department of Renal and Genitourinary Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Nobuo Shinohara
- Department of Renal and Genitourinary Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Minoru Miyazato
- Department of System Physiology, Graduate School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa, 903-0215, Japan.
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Rullah K, Shamsudin NF, Koeberle A, Tham CL, Fasihi Mohd Aluwi MF, Leong SW, Jantan I, Lam KW. Flavonoid diversity and roles in the lipopolysaccharide-mediated inflammatory response of monocytes and macrophages. Future Med Chem 2024; 16:75-99. [PMID: 38205612 DOI: 10.4155/fmc-2023-0174] [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: 06/12/2023] [Accepted: 11/27/2023] [Indexed: 01/12/2024] Open
Abstract
Targeting lipopolysaccharide (LPS)/toll-like receptor 4 signaling in mononuclear phagocytes has been explored for the treatment of inflammation and inflammation-related disorders. However, only a few key targets have been translated into clinical applications. Flavonoids, a class of ubiquitous plant secondary metabolites, possess a privileged scaffold which serves as a valuable template for designing pharmacologically active compounds directed against diseases with inflammatory components. This perspective provides a general overview of the diversity of flavonoids and their multifaceted mechanisms that interfere with LPS-induced signaling in monocytes and macrophages. Focus is placed on flavonoids targeting MD-2, IκB kinases, c-Jun N-terminal kinases, extracellular signal-regulated kinase, p38 MAPK and PI3K/Akt or modulating LPS-related gene expression.
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Affiliation(s)
- Kamal Rullah
- Department of Pharmaceutical Chemistry, Kulliyyah of Pharmacy, International Islamic University Malaysia, 25200 Kuantan, Pahang, Malaysia
| | - Nur Farisya Shamsudin
- Department of Pharmaceutical Chemistry, Kulliyyah of Pharmacy, International Islamic University Malaysia, 25200 Kuantan, Pahang, Malaysia
| | - Andreas Koeberle
- Michael Popp Institute and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, 6020 Innsbruck, Austria
| | - Chau Ling Tham
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Mohd Fadhlizil Fasihi Mohd Aluwi
- Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang Al-Sultan Abdullah, Lebuhraya Tun Razak, 26300 Gambang, Kuantan, Pahang, Malaysia
| | - Sze-Wei Leong
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Ibrahim Jantan
- Institute of Systems Biology (INBIOSIS), Universiti Kebangsaan Malaysia, 43600 Bangi, Malaysia
| | - Kok Wai Lam
- Centre for Drug & Herbal Development, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia
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Boss K, Hagen J, Constans M, Goetz C, Kalyuzhny AE. Comparing Flow Cytometry and ELISpot for Detection of IL-10, IL-6, and TNF Alpha on Human PBMCs. Methods Mol Biol 2024; 2768:87-103. [PMID: 38502389 DOI: 10.1007/978-1-0716-3690-9_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
ELISpot and flow cytometry are two methods often utilized side-by-side for detecting secreted and intracellular cytokines, respectively. Each application has its own advantages and challenges. ELISpot is more sensitive compared to ELISA and appears to be more consistent in detecting IL-10 production than flow cytometry. ELISpot can be used for detecting the secretion of multiple cytokines but not from the same cells simultaneously, whereas flow cytometry allows for the concurrent detection of multiple intracellular cytokines by the same cells. Flow cytometry is a convenient technique allowing for the detection of many cytokines at the same time in a population of cells. The restimulation cocktails used for cytokine detection in flow cytometry are hard on cells and lead to decreased cell viability. Using a live dead dye allows for the exclusion of dead cells when analyzing data. We illustrated the differences between ELISpot and flow cytometry by stimulating cells with two toll-like receptor (TLR) agonists, LPS or Pam3CSK4. Both activators increase production of various cytokines, including IL-10, IL-6, and TNF-alpha. The TLR2 antagonist, MMG-11, was used to inhibit this increased cytokine production. We observed some inhibition of IL-6 and IL-10 from Pam3CSK4 stimulation in the presence of MMG-11 by flow cytometry. TNF-α remains largely unchanged as its basal expression is high, but there is some reduction in the presence of MMG-11 for both methods. However, IL-10 was difficult to detect by ELISpot given the low seeding density. Overall, both ELISpot and flow cytometry are good methods for detecting secreted and intracellular cytokines, respectively, and should be used as complimentary assays.
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Yu L, Ran H, Lu Y, Ma Q, Huang H, Liu W. Targeting HIF-1α alleviates the inflammatory responses and rebuilds the CD4 + T cell subsets balance in the experimental autoimmune myasthenia gravis inflammation model via regulating cellular and humoral immunity. Life Sci 2024; 336:122287. [PMID: 37995933 DOI: 10.1016/j.lfs.2023.122287] [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: 06/10/2023] [Revised: 10/29/2023] [Accepted: 11/20/2023] [Indexed: 11/25/2023]
Abstract
BACKGROUND Cells and tissues in an inflammatory state are usually hypoxic. The hypoxic environment can affect the differentiation of immune cells and produce Hypoxia-inducible Factor-1α (HIF-1α). Inflammation is also a major contributor to the development and deterioration of Myasthenia Gravis (MG). There are limited studies on the immunopathological mechanism and targeted therapy associated with MG exacerbated with inflammation. This research aimed to explore whether BAY 87-2243 (HIF-1α inhibitor) ameliorates the symptoms of the Experimental Autoimmune Myasthenia Gravis (EAMG) inflammation model and study its regulatory mechanism on cellular immunity and humoral immunity. METHODS We first establish the EAMG inflammation model using Lipopolysaccharide (LPS), BAY 87-2243 was applied to the EAMG inflammation model and its therapeutic effects were evaluated in vivo and in vitro experiments. RESULTS The proportion of Treg cells was increased whereas Th1, Th17, and Th1/17 cells were decreased in BAY 87-2243-treated EAMG inflammation model. BAY 87-2243 ameliorated the acetylcholine receptors (AChRs) loss and the complement deposited at the neuromuscular junction of the EAMG inflammation model, declined the levels of IFN-γ, IL-17, and IL-6 in serum, and further attenuated responses in the germinal center and reduced the antibody levels by inhibiting the IL-6-dependent STAT3 axis. CONCLUSION BAY 87-2243 restored the balance of CD4+T cell subsets and reduced the production of the pro-inflammatory cytokines, thus acting as both an immune imbalance regulator and anti-inflammatory. The current study suggests that HIF-1α might be a potential target for the treatment of MG exacerbated with inflammation.
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Affiliation(s)
- Lu Yu
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou 510080, China; Department of Neurology, Guizhou Provincial People's Hospital, Guiyang 550002, China
| | - Hao Ran
- School of Pharmaceutical Science, Sun Yat-sen University, Guangzhou 510006, China
| | - Yaru Lu
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou 510080, China
| | - Qian Ma
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou 510080, China
| | - Huan Huang
- Department of Neurology and Psychiatry, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - Weibin Liu
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou 510080, China.
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Wang YC, Kung WM, Chung YH, Kumar S. Drugs to Treat Neuroinflammation in Neurodegenerative Disorders. Curr Med Chem 2024; 31:1818-1829. [PMID: 37013428 DOI: 10.2174/0929867330666230403125140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 01/26/2023] [Accepted: 02/10/2023] [Indexed: 04/05/2023]
Abstract
Neuroinflammation is associated with disorders of the nervous system, and it is induced in response to many factors, including pathogen infection, brain injury, toxic substances, and autoimmune diseases. Astrocytes and microglia have critical roles in neuroinflammation. Microglia are innate immune cells in the central nervous system (CNS), which are activated in reaction to neuroinflammation-inducing factors. Astrocytes can have pro- or anti-inflammatory responses, which depend on the type of stimuli presented by the inflamed milieu. Microglia respond and propagate peripheral inflammatory signals within the CNS that cause low-grade inflammation in the brain. The resulting alteration in neuronal activities leads to physiological and behavioral impairment. Consequently, activation, synthesis, and discharge of various pro-inflammatory cytokines and growth factors occur. These events lead to many neurodegenerative conditions, such as Alzheimer's disease, Parkinson's disease, and multiple sclerosis discussed in this study. After understanding neuroinflammation mechanisms and the involvement of neurotransmitters, this study covers various drugs used to treat and manage these neurodegenerative illnesses. The study can be helpful in discovering new drug molecules for treating neurodegenerative disorders.
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Affiliation(s)
- Yao-Chin Wang
- Graduate Institute of Injury Prevention and Control, College of Public Health, Taipei Medical University, Taipei, Taiwan
- Department of Emergency, Min-Sheng General Hospital, Taoyuan City, Taiwan
| | - Woon-Man Kung
- Department of Exercise and Health Promotion, College of Kinesiology and Health, Chinese Culture University, Taipei, Taiwan
| | - Yi-Hsiu Chung
- Department of Medical Research and Development, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Sunil Kumar
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan
- School of Law (Patent), Nottingham Trent University, 50 Shakespeare St, Nottingham, NG14FQ, England
- Pomato IP (Ignite Your Idea), Nottingham, England
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Robledo Gonzalez L, Tat RP, Greaves JC, Robinson CM. Viral-Bacterial Interactions That Impact Viral Thermostability and Transmission. Viruses 2023; 15:2415. [PMID: 38140656 PMCID: PMC10747402 DOI: 10.3390/v15122415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/01/2023] [Accepted: 12/08/2023] [Indexed: 12/24/2023] Open
Abstract
Enteric viruses are significant human pathogens that commonly cause foodborne illnesses worldwide. These viruses initiate infection in the gastrointestinal tract, home to a diverse population of intestinal bacteria. In a novel paradigm, data indicate that enteric viruses utilize intestinal bacteria to promote viral replication and pathogenesis. While mechanisms underlying these observations are not fully understood, data suggest that some enteric viruses bind directly to bacteria, stabilizing the virion to retain infectivity. Here, we discuss the current knowledge of these viral-bacterial interactions and examine the impact of these interactions on viral transmission.
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Affiliation(s)
- Lorimar Robledo Gonzalez
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202, USA; (L.R.G.); (R.P.T.)
| | - Rachel P. Tat
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202, USA; (L.R.G.); (R.P.T.)
| | - Justin C. Greaves
- Department of Environmental and Occupational Health, School of Public Health, Indiana University, Bloomington, IN 47408, USA;
| | - Christopher M. Robinson
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202, USA; (L.R.G.); (R.P.T.)
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Gangwar R, Ray D, Khatun S, Subrahmanyam C, Rengan AK, Vanjari SRK. Toll-like receptor-immobilized carbon paste electrodes with plasma functionalized amine termination: Towards real-time electrochemical based triaging of gram-negative bacteria. Biosens Bioelectron 2023; 241:115674. [PMID: 37717423 DOI: 10.1016/j.bios.2023.115674] [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: 06/12/2023] [Revised: 08/29/2023] [Accepted: 09/05/2023] [Indexed: 09/19/2023]
Abstract
Chronic wounds caused due to bacterial biofilms are detrimental to a patient, and an immediate diagnosis of these bacteria can aid in an effective treatment, which is still an unmet clinical need. An instant and accurate identification of bacterial type could be made by utilizing the Toll-Like Receptors (TLRs) combined with Myeloid Differentiation factor 2 (MD-2). Given this, we have developed an electrochemical sensing platform to identify the gram-negative (gram-ve) bacteria using TLR4/MD-2 complex. The nonthermal plasma (NTP) technique was utilized to functionalize amine groups onto the carbon surface to fabricate cost-effective carbon paste working electrodes (CPEs). The proposed electrochemical sensor platform with a specially engineered electrochemical cell (E-Cell) identified the Escherichia coli (E. coli) in a wide linear range of 1.5×10° - 1.5×106 C.F.U./mL, accounting for a very low detection limit of 0.087 C.F.U./mL. The novel and cost-effective sensor platform identified gram-ve bacteria predominantly in a mixture of gram positive (gram+ve) bacteria and fungi. Further, towards real-time detection of bacteria and point-of-care (PoC) applications, the effect of the pond water matrix was studied, which was minimal, and the sensor could identify E. coli concentrations selectively, showing the potential application of the proposed platform towards real-time bacterial detection.
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Affiliation(s)
- Rahul Gangwar
- Department of Electrical Engineering, Indian Institute of Technology Hyderabad, 502284, India.
| | - Debjyoti Ray
- Department of Chemistry, Indian Institute of Technology Hyderabad, 502284, India; Department of Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong Special Administrative Region of China.
| | - Sajmina Khatun
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, 502284, India.
| | | | - Aravind Kumar Rengan
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, 502284, India.
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Kang E, Lee J, Seo S, Uddin S, Lee S, Han SB, Cho S. Regulation of anti-inflammatory and antioxidant responses by methanol extract of Mikania cordata (Burm. f.) B. L. Rob. leaves via the inactivation of NF-κB and MAPK signaling pathways and activation of Nrf2 in LPS-induced RAW 264.7 macrophages. Biomed Pharmacother 2023; 168:115746. [PMID: 37864893 DOI: 10.1016/j.biopha.2023.115746] [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: 07/11/2023] [Revised: 10/07/2023] [Accepted: 10/16/2023] [Indexed: 10/23/2023] Open
Abstract
Mikania cordata (Burm. f.) B.L. Rob. has been traditionally used in tropical countries throughout Asia and Africa to treat gastric ulcers, dyspepsia, and dysentery. However, the mechanisms responsible for its anti-inflammatory and antioxidant activities are not fully understood. Therefore, this study sought to investigate the anti-inflammatory and antioxidant effects of methanol extracts of M. cordata (MMC) on inflammation and oxidative stress in lipopolysaccharide (LPS)-stimulated murine RAW 264.7 macrophages and elucidate its underlying regulatory mechanism. MMC significantly suppressed the production of nitric oxide (NO) and prostaglandin E2 (PGE2) in LPS-stimulated RAW 264.7 macrophages by downregulating the expression of inducible NO synthase (iNOS) and cyclooxygenase-2 (COX-2) at both the mRNA and protein levels. Moreover, MMC effectively reduced the mRNA expression levels and production of pro-inflammatory cytokines, including interleukin-6 (IL-6), IL-1β, and tumor necrosis factor-α (TNF-α). These suppressive effects of MMC on pro-inflammatory mediators and cytokines were mediated through the inhibition of transforming growth factor beta-activated kinase 1 (TAK1), which subsequently blocked the activation of nuclear factor-κB (NF-κB) and mitogen-activated protein kinases (MAPKs). MMC also upregulated the nuclear factor erythroid-2-related factor 2 (Nrf2) by inducing the degradation of Kelch-like ECH-related protein 1 (Keap1), an Nrf2-specific E3 ligase. Accordingly, MMC enhanced Nrf2 target gene expression of anti-oxidative regulators such as heme oxygenase-1 (HO-1) and NAD(P)H quinone oxidoreductase 1 (NQO1). However, it had minimal effect on the DPPH radical scavenging capacity in vitro. Collectively, these findings demonstrate that MMC holds promise as a potential therapeutic agent for alleviating inflammation-related diseases and oxidative stress.
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Affiliation(s)
- Eunjeong Kang
- Laboratory of Molecular and Pharmacological Cell Biology, College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Junho Lee
- Laboratory of Molecular and Pharmacological Cell Biology, College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Sumin Seo
- Laboratory of Biomedical Mass Spectrometry, College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Salah Uddin
- Ethnobotanical Database of Bangladesh, Tejgaon Dhaka, 1208, Bangladesh
| | - Sangwoo Lee
- International Biological Material Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea
| | - Sang Beom Han
- Laboratory of Biomedical Mass Spectrometry, College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Sayeon Cho
- Laboratory of Molecular and Pharmacological Cell Biology, College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea.
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83
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Xiao S, Zhang P, Zhang G, Li W, Lin H, Hu X. Inhibition of toll-like receptor 4 activation by apigenin and chrysin via competition for sites and conformational changes. Int J Biol Macromol 2023; 252:126415. [PMID: 37598817 DOI: 10.1016/j.ijbiomac.2023.126415] [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: 07/10/2023] [Revised: 08/16/2023] [Accepted: 08/17/2023] [Indexed: 08/22/2023]
Abstract
The activation of toll-like receptor 4 (TLR4) signaling is crucial for initiating and coordinating the immune response against infections, and is proved as a vital target for inflammatory diseases. Herein, TLR4 with sufficient amount and functional activity was generated by heterologous expression and used to investigate the mechanism of apigenin (Api)/chrysin (Chr) inhibition of TLR4 activation. The results demonstrated that Api/Chr exhibited a strong fluorescence quenching effect through a static quenching and a high binding affinity (Ka > 105 L·mol-1) with TLR4, indicating the potential of Api/Chr as a TLR4 inhibitor. Additionally, the binding of Api/Chr induced a loose and unstable conformation of TLR4 with evidence like the decreased hydrophobicity of the tryptophan microenvironment, decreased α-helix content and increased free sulfhydryl content, resulting in reduced stability of the TLR4. The computer simulations revealed that Api/Chr occupied the myeloid differentiation factor 2 (MD-2) binding region, preventing MD-2 from binding to TLR4. Furthermore, the accuracy of the binding site between Api/Chr and TLR4 was confirmed through genetic mutations. Overall, the mechanism by which Api/Chr inhibited TLR4 activation was elucidated at the macroscopic and molecular levels, providing the worthful information concerning the future therapeutic application of Api/Chr as a natural TLR4 inhibitor.
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Affiliation(s)
- Shuang Xiao
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Peng Zhang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Guowen Zhang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Wenwen Li
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Haowen Lin
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Xing Hu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
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84
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Waritani T, Lomax S, Cutler D, Chang J. Development and evaluation of mouse anti-Ara h 1 and Ara h 3 IgE monoclonal antibodies for advancing peanut allergy research. MethodsX 2023; 11:102470. [PMID: 38034322 PMCID: PMC10681920 DOI: 10.1016/j.mex.2023.102470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 10/31/2023] [Indexed: 12/02/2023] Open
Abstract
Immediate hypersensitivity reactions to peanuts are a considerable public health concern due to the acute and severe IgE mediated reactions. To conduct research on the pathogenesis and therapeutics of peanut allergies, it is imperative to have mouse anti-crude peanut extract (CPE) IgE monoclonal antibodies (mAbs) for both in-vitro and in-vivo assays. Without these tools, it is difficult to advance research in this field. In this study, four hybridomas producing anti-CPE IgE mAbs were developed and the IgE mAbs were validated using immune-blot analysis, Sandwich ELISA, Indirect ELISA, a cell-based assay using RBL-2H3 cells, and footpad type I hypersensitivity reaction studies in mice. The results indicate that two of the four mAbs can be effectively used for both in-vitro and in-vivo peanut allergy studies, as they induce allergic reactions with sensitization alone in mice. These novel anti-Ara h1 and Ara h 3 IgE mAbs, in combination with the detailed protocols outlined in this article, offer valuable guidance for studying acute allergic reactions involving mast cells across various platforms. With some considerations, the IgE mAbs can significantly advance peanut allergy research.
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Affiliation(s)
- Takaki Waritani
- Chondrex, Inc., 16928 Woodinville-Redmond Rd NE STE B101, Woodinville, WA 98072, USA
| | - Sidney Lomax
- Chondrex, Inc., 16928 Woodinville-Redmond Rd NE STE B101, Woodinville, WA 98072, USA
| | - Dawn Cutler
- Chondrex, Inc., 16928 Woodinville-Redmond Rd NE STE B101, Woodinville, WA 98072, USA
| | - Jessica Chang
- Chondrex, Inc., 16928 Woodinville-Redmond Rd NE STE B101, Woodinville, WA 98072, USA
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85
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Nilsen KE, Zhang B, Skjesol A, Ryan L, Vagle H, Bøe MH, Orning P, Kim H, Bakke SS, Elamurugan K, Mestvedt IB, Stenvik J, Husebye H, Lien E, Espevik T, Yurchenko M. Peptide derived from SLAMF1 prevents TLR4-mediated inflammation in vitro and in vivo. Life Sci Alliance 2023; 6:e202302164. [PMID: 37788908 PMCID: PMC10547912 DOI: 10.26508/lsa.202302164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 09/21/2023] [Accepted: 09/22/2023] [Indexed: 10/05/2023] Open
Abstract
Inflammation plays a crucial role in the development and progression of many diseases, and is often caused by dysregulation of signalling from pattern recognition receptors, such as TLRs. Inhibition of key protein-protein interactions is an attractive target for treating inflammation. Recently, we demonstrated that the signalling lymphocyte activation molecule family 1 (SLAMF1) positively regulates signalling downstream of TLR4 and identified the interaction interface between SLAMF1 and the TLR4 adaptor protein TRIF-related adapter molecule (TRAM). Based on these findings, we developed a SLAMF1-derived peptide, P7, which is linked to a cell-penetrating peptide for intracellular delivery. We found that P7 peptide inhibits the expression and secretion of IFNβ and pro-inflammatory cytokines (TNF, IL-1β, IL-6) induced by TLR4, and prevents death in mice subjected to LPS shock. The mechanism of action of P7 peptide is based on interference with several intracellular protein-protein interactions, including TRAM-SLAMF1, TRAM-Rab11FIP2, and TIRAP-MyD88 interactions. Overall, P7 peptide has a unique mode of action and demonstrates high efficacy in inhibiting TLR4-mediated signalling in vitro and in vivo.
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Affiliation(s)
- Kaja Elisabeth Nilsen
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Boyao Zhang
- Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Astrid Skjesol
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Liv Ryan
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Hilde Vagle
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Maren Helene Bøe
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Pontus Orning
- Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Hera Kim
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Siril Skaret Bakke
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Kirusika Elamurugan
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Ingvild Bergdal Mestvedt
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Jørgen Stenvik
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Infectious Diseases, Clinic of Medicine, St. Olavs Hospital HF, Trondheim University Hospital, Trondheim, Norway
| | - Harald Husebye
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Egil Lien
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Terje Espevik
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Infectious Diseases, Clinic of Medicine, St. Olavs Hospital HF, Trondheim University Hospital, Trondheim, Norway
| | - Maria Yurchenko
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Infectious Diseases, Clinic of Medicine, St. Olavs Hospital HF, Trondheim University Hospital, Trondheim, Norway
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86
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Aljarboa AS, Alhusaini AM, Sarawi WS, Mohammed R, Ali RA, Hasan IH. The implication of LPS/TLR4 and FXR receptors in hepatoprotective efficacy of indole-3-acetic acid and chenodeoxycholic acid. Life Sci 2023; 334:122182. [PMID: 37863258 DOI: 10.1016/j.lfs.2023.122182] [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: 08/27/2023] [Revised: 10/05/2023] [Accepted: 10/14/2023] [Indexed: 10/22/2023]
Abstract
AIM Valproic acid (VPA) belongs to the first-generation antiepileptic drugs, yet its prolonged use can cause life-threatening liver damage. The importance of our study is to investigate the protective effect of indole-3-acetic acid (IAA), chenodeoxycholic acid (CDCA) and their combination on VPA-induced liver injury focusing on lipopolysaccharides (LPS)/toll-like receptor 4 (TLR4) pathway and farnesoid X receptor (FXR). METHODS Thirty rats were randomly assigned into five groups, normal control group, VPA group received 500 mg/kg of VPA intraperitoneally. The remaining groups were orally treated with either 40 mg/kg of IAA, 90 mg/kg of CDCA, or a combination of both, along with VPA. All treatments were administered one hour after the administration of VPA for three weeks. KEY FINDINGS VPA group showed significant elevations in the liver weight/body weight ratio, serum aminotransferases, triglyceride, and total cholesterol levels. Hepatic glutathione (GSH) level and superoxide dismutase (SOD) activity were significantly decreased, while malondialdehyde (MDA) level, tumor necrosis factor-α (TNF-α), interleukin-1beta (IL-1β), lipopolysaccharide (LPS) and caspase 3 were significantly increased. Likewise, immunohistochemical analysis revealed that TLR4 expression was elevated, whereas FXR expression was downregulated in hepatocytes. IAA substantially ameliorated all previously altered parameters, whereas CDCA treatment showed a partial improvement compared to IAA. Surprisingly, combination therapy of IAA with CDCA showed an additive effect only in the hepatic expression of TLR4 and FXR proteins. SIGNIFICANCE IAA could be a promising protective agent against VPA-induced liver injury.
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Affiliation(s)
- Amjad S Aljarboa
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 22452, Riyadh 11495, Saudi Arabia.
| | - Ahlam M Alhusaini
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 22452, Riyadh 11495, Saudi Arabia.
| | - Wedad S Sarawi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 22452, Riyadh 11495, Saudi Arabia.
| | - Raeesa Mohammed
- Department of Histology, College of Medicine, King Saud University, P.O. Box 2925, Riyadh 11461, Saudi Arabia.
| | - Rehab A Ali
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 22452, Riyadh 11495, Saudi Arabia.
| | - Iman H Hasan
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 22452, Riyadh 11495, Saudi Arabia.
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87
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Shen J, Wang S, Xia H, Han S, Wang Q, Wu Z, Zhuge A, Li S, Chen H, Lv L, Chen Y, Li L. Akkermansia muciniphila attenuated lipopolysaccharide-induced acute lung injury by modulating the gut microbiota and SCFAs in mice. Food Funct 2023; 14:10401-10417. [PMID: 37955584 DOI: 10.1039/d3fo04051h] [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: 11/14/2023]
Abstract
Gut microbiota are closely related to lipopolysaccharide (LPS)-induced acute lung injury (ALI). Akkermansia muciniphila (A. muciniphila) maintains the intestinal barrier function and regulates the balance of reduced glutathione/oxidized glutathione. However, it may be useful as a treatment strategy for LPS-induced lung injury. Our study aimed to explore whether A. muciniphila could improve lung injury by affecting the gut microbiota. The administration of A. muciniphila effectively attenuated lung injury tissue damage and significantly decreased the oxidative stress and inflammatory reaction induced by LPS, with lower levels of myeloperoxidase (MDA), enhanced superoxide dismutase (SOD) activity, decreased pro-inflammatory cytokine levels, and reduced macrophage and neutrophil infiltration. Moreover, A. muciniphila maintained the intestinal barrier function, reshaped the disordered microbial community, and promoted the secretion of short-chain fatty acids (SCFAs). A. muciniphila significantly downregulated the expression of TLR2, MyD88 and NF-kappa B (P < 0.05). Butyrate supplementation demonstrated a significant improvement in the inflammatory response (P < 0.05) and mitigation of histopathological damage in mice with ALI, thereby restoring the intestinal butyric acid concentration. In conclusion, our findings indicate that A. muciniphila inhibits the accumulation of inflammatory cytokines and attenuates the activation of the TLR2/Myd88/NF-κB pathway due to exerting anti-inflammatory effects through butyrate. This study provides an experimental foundation for the potential application of A. muciniphila and butyrate in the prevention and treatment of ALI.
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Affiliation(s)
- Jian Shen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Centre for Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qingchun Rd., Hangzhou City 310003, China.
| | - Shuting Wang
- Department of Gastroenterology, The Second Affiliated Hospital of Nanchang University, Jiangxi, Nanchang 330006, China
| | - He Xia
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Centre for Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qingchun Rd., Hangzhou City 310003, China.
| | - Shengyi Han
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Centre for Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qingchun Rd., Hangzhou City 310003, China.
| | - Qiangqiang Wang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Centre for Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qingchun Rd., Hangzhou City 310003, China.
| | - Zhengjie Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Centre for Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qingchun Rd., Hangzhou City 310003, China.
| | - Aoxiang Zhuge
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Centre for Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qingchun Rd., Hangzhou City 310003, China.
| | - Shengjie Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Centre for Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qingchun Rd., Hangzhou City 310003, China.
| | - Hui Chen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Centre for Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qingchun Rd., Hangzhou City 310003, China.
| | - Longxian Lv
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Centre for Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qingchun Rd., Hangzhou City 310003, China.
| | - Yanfei Chen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Centre for Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qingchun Rd., Hangzhou City 310003, China.
| | - Lanjuan Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Centre for Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qingchun Rd., Hangzhou City 310003, China.
- Jinan Microecological Biomedicine Shandong Laboratory, Jinan, China
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88
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Yi M, Fasina OB, Li Y, Xiang L, Qi J. Mixture of Peanut Skin Extract, Geniposide, and Isoquercitrin Improves the Hepatic Lipid Accumulation of Mice via Modification of Gut Microbiota Homeostasis and the TLR4 and AMPK Signaling Pathways. Int J Mol Sci 2023; 24:16684. [PMID: 38069009 PMCID: PMC10706562 DOI: 10.3390/ijms242316684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/21/2023] [Accepted: 11/22/2023] [Indexed: 12/18/2023] Open
Abstract
Metabolic-dysfunction-associated steatotic liver disease (MASLD, formerly known as NAFLD) is a global chronic liver disease, and no licensed drugs are currently available for its treatment. The incidence of MASLD is increasing, which could lead to a huge clinical and economic burden. As a multifactorial disease, MASLD involves a complex set of metabolic changes, and many monotherapies for it are not clinically effective. Therefore, combination therapies using multiple drugs are emerging, with the advantages of improving drug efficacy and reducing side effects. Peanut skin extract (PSE), geniposide (GEN), and isoquercitrin (IQ) are three natural antiaging components or compounds. In this study, the preventive effects of individual PSE, GEN, and IQ in comparison with the effects of their mixture (MPGI) were examined in a mouse model of high-fat-feed-induced MASLD. The results showed that MPGI could significantly reduce the body and liver weights of mice and improve hepatic steatosis and liver function indicators. Further mechanistic studies showed that PSE, GEN, and IQ worked together by reducing inflammation, modulating the intestinal flora, and regulating the TLR4/NF-κB, AMPK/ACC/CPT1, and AMPK/UKL1/LC3B signaling pathways. It is a promising therapeutic method for preventing MASLD.
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Affiliation(s)
- Meijuan Yi
- College of Pharmaceutical Science, Zhejiang University, Hangzhou 310058, China; (M.Y.); (O.B.F.); (Y.L.)
| | - Opeyemi B. Fasina
- College of Pharmaceutical Science, Zhejiang University, Hangzhou 310058, China; (M.Y.); (O.B.F.); (Y.L.)
| | - Yajing Li
- College of Pharmaceutical Science, Zhejiang University, Hangzhou 310058, China; (M.Y.); (O.B.F.); (Y.L.)
| | - Lan Xiang
- College of Pharmaceutical Science, Zhejiang University, Hangzhou 310058, China; (M.Y.); (O.B.F.); (Y.L.)
| | - Jianhua Qi
- College of Pharmaceutical Science, Zhejiang University, Hangzhou 310058, China; (M.Y.); (O.B.F.); (Y.L.)
- Jinhua Institute of Zhejiang University, Jinhua 321299, China
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89
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Hou P, Zielonka M, Serneels L, Martinez-Muriana A, Fattorelli N, Wolfs L, Poovathingal S, T'Syen D, Balusu S, Theys T, Fiers M, Mancuso R, Howden AJM, De Strooper B. The γ-secretase substrate proteome and its role in cell signaling regulation. Mol Cell 2023; 83:4106-4122.e10. [PMID: 37977120 DOI: 10.1016/j.molcel.2023.10.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 06/22/2023] [Accepted: 10/20/2023] [Indexed: 11/19/2023]
Abstract
γ-Secretases mediate the regulated intramembrane proteolysis (RIP) of more than 150 integral membrane proteins. We developed an unbiased γ-secretase substrate identification (G-SECSI) method to study to what extent these proteins are processed in parallel. We demonstrate here parallel processing of at least 85 membrane proteins in human microglia in steady-state cell culture conditions. Pharmacological inhibition of γ-secretase caused substantial changes of human microglial transcriptomes, including the expression of genes related to the disease-associated microglia (DAM) response described in Alzheimer disease (AD). While the overall effects of γ-secretase deficiency on transcriptomic cell states remained limited in control conditions, exposure of mouse microglia to AD-inducing amyloid plaques strongly blocked their capacity to mount this putatively protective DAM cell state. We conclude that γ-secretase serves as a critical signaling hub integrating the effects of multiple extracellular stimuli into the overall transcriptome of the cell.
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Affiliation(s)
- Pengfei Hou
- Laboratory for the Research of Neurodegenerative Diseases, VIB Center for Brain & Disease Research, VIB, Leuven 3000, Belgium; Department of Neurosciences and Leuven Brain Institute, KU Leuven, Leuven 3000, Belgium
| | - Magdalena Zielonka
- Laboratory for the Research of Neurodegenerative Diseases, VIB Center for Brain & Disease Research, VIB, Leuven 3000, Belgium; Department of Neurosciences and Leuven Brain Institute, KU Leuven, Leuven 3000, Belgium
| | - Lutgarde Serneels
- Laboratory for the Research of Neurodegenerative Diseases, VIB Center for Brain & Disease Research, VIB, Leuven 3000, Belgium; Department of Neurosciences and Leuven Brain Institute, KU Leuven, Leuven 3000, Belgium
| | - Anna Martinez-Muriana
- Laboratory for the Research of Neurodegenerative Diseases, VIB Center for Brain & Disease Research, VIB, Leuven 3000, Belgium; Department of Neurosciences and Leuven Brain Institute, KU Leuven, Leuven 3000, Belgium
| | - Nicola Fattorelli
- Laboratory for the Research of Neurodegenerative Diseases, VIB Center for Brain & Disease Research, VIB, Leuven 3000, Belgium; Department of Neurosciences and Leuven Brain Institute, KU Leuven, Leuven 3000, Belgium
| | - Leen Wolfs
- Laboratory for the Research of Neurodegenerative Diseases, VIB Center for Brain & Disease Research, VIB, Leuven 3000, Belgium; Department of Neurosciences and Leuven Brain Institute, KU Leuven, Leuven 3000, Belgium
| | - Suresh Poovathingal
- Department of Neurosciences and Leuven Brain Institute, KU Leuven, Leuven 3000, Belgium; Single Cell & Microfluidics Expertise Unit, VIB Center for Brain & Disease Research, VIB, Leuven 3000, Belgium
| | - Dries T'Syen
- Laboratory for the Research of Neurodegenerative Diseases, VIB Center for Brain & Disease Research, VIB, Leuven 3000, Belgium; Department of Neurosciences and Leuven Brain Institute, KU Leuven, Leuven 3000, Belgium
| | - Sriram Balusu
- Laboratory for the Research of Neurodegenerative Diseases, VIB Center for Brain & Disease Research, VIB, Leuven 3000, Belgium; Department of Neurosciences and Leuven Brain Institute, KU Leuven, Leuven 3000, Belgium
| | - Tom Theys
- Department of Neurosciences, Research Group Experimental Neurosurgery and Neuroanatomy, KU Leuven, Leuven 3000, Belgium
| | - Mark Fiers
- Laboratory for the Research of Neurodegenerative Diseases, VIB Center for Brain & Disease Research, VIB, Leuven 3000, Belgium; Department of Neurosciences and Leuven Brain Institute, KU Leuven, Leuven 3000, Belgium; Center for Human Genetics, KU Leuven, Leuven 3000, Belgium; Dementia Research Institute, Institute of Neurology, University College London, London WC1E 6BT, UK
| | - Renzo Mancuso
- Microglia and Inflammation in Neurological Disorders (MIND) Lab, VIB Center for Molecular Neurology, VIB, Antwerp 2610, Belgium; Department of Biomedical Sciences, University of Antwerp, Antwerp 2610, Belgium
| | - Andrew J M Howden
- Division of Cell Signaling and Immunology, School of Life Sciences, University of Dundee, Dundee DD1 4HN, UK
| | - Bart De Strooper
- Laboratory for the Research of Neurodegenerative Diseases, VIB Center for Brain & Disease Research, VIB, Leuven 3000, Belgium; Department of Neurosciences and Leuven Brain Institute, KU Leuven, Leuven 3000, Belgium; Center for Human Genetics, KU Leuven, Leuven 3000, Belgium; Dementia Research Institute, Institute of Neurology, University College London, London WC1E 6BT, UK.
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90
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Varma VP, Bankala R, Kumar A, Gawai S, Faisal SM. Differential modulation of innate immune response by lipopolysaccharide of Leptospira. Open Biol 2023; 13:230101. [PMID: 37935355 PMCID: PMC10645091 DOI: 10.1098/rsob.230101] [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: 05/30/2023] [Accepted: 08/16/2023] [Indexed: 11/09/2023] Open
Abstract
Leptospirosis is a worldwide zoonosis caused by pathogenic Leptospira spp. having more than 300 serovars. These serovars can infect a variety of hosts, some being asymptomatic carriers and others showing varied symptoms of mild to severe infection. Since lipopolysaccharide (LPS) is the major antigen which defines serovar specificity, this different course of infection may be attributed to a differential innate response against this antigen. Previous studies have shown that Leptospira LPS is less endotoxic. However, it is unclear whether there is a difference in the ability of LPS isolated from different serovars to modulate the innate response. In this study, we purified LPS from three widely prevalent pathogenic serovars, i.e. Icterohaemorrhagiae strain RGA, Pomona, Hardjo, and from non-pathogenic L. biflexa serovar semeranga strain Potac 1 collectively termed as L-LPS and tested their ability to modulate innate response in macrophages from both resistant (mice) and susceptible (human and bovine) hosts. L-LPS induced differential response being more proinflammatory in mouse and less proinflammatory in human and bovine macrophages but overall less immunostimulatory than E. coli LPS (E-LPS). Irrespective of serovar, this response was TLR2-dependent in humans, whereas TLR4-dependent/CD14-independent in mouse using MyD88 adapter and signalling through P38 and ERK-dependent MAP kinase pathway. L-LPS-activated macrophages were able to phagocytose Leptospira and this effect was significantly higher or more pronounced when the macrophages were stimulated with L-LPS from the corresponding serovar. L-LPS activated both canonical and non-canonical inflammasome, producing IL-1β without inducing pyroptosis. Further, L-LPS induced both TNF-mediated early and NO-mediated late apoptosis. Altogether, these results indicate that L-LPS induces a differential innate response that is quite distinct from that induced by E-LPS and may be attributed to the structural differences and its atypical nature.
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Affiliation(s)
- Vivek P. Varma
- Laboratory of Vaccine Immunology, National Institute of Animal Biotechnology, Hyderabad 500032, India
- Graduate Studies, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Ramudu Bankala
- Laboratory of Vaccine Immunology, National Institute of Animal Biotechnology, Hyderabad 500032, India
| | - Ajay Kumar
- Laboratory of Vaccine Immunology, National Institute of Animal Biotechnology, Hyderabad 500032, India
- Regional Centre for Biotechnology, Faridabad, India
| | - Shashikant Gawai
- Laboratory of Vaccine Immunology, National Institute of Animal Biotechnology, Hyderabad 500032, India
| | - Syed M. Faisal
- Laboratory of Vaccine Immunology, National Institute of Animal Biotechnology, Hyderabad 500032, India
- Regional Centre for Biotechnology, Faridabad, India
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91
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Okano H, Ojiro R, Zou X, Tang Q, Ozawa S, Koyanagi M, Maronpot RR, Yoshida T, Shibutani M. Exploring the effects of embryonic and neonatal exposure to lipopolysaccharides on oligodendrocyte differentiation in the rat hippocampus and the protective effect of alpha-glycosyl isoquercitrin. J Chem Neuroanat 2023; 133:102336. [PMID: 37678702 DOI: 10.1016/j.jchemneu.2023.102336] [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: 07/13/2023] [Revised: 08/25/2023] [Accepted: 09/02/2023] [Indexed: 09/09/2023]
Abstract
This study compared the effects of embryonic and neonatal lipopolysaccharides (LPS) exposure (E-LPS and N-LPS) on oligodendrocyte (OL) differentiation in the hippocampus of male rats and explored the protective effect of the antioxidant alpha-glycosyl isoquercitrin (AGIQ). Using SD rats, LPS exposure occurred either intraperitoneally in dams between gestational days 15 and 16 (50 µg/kg body weight/time) or in male pups on postnatal day (PND) 3 (1 mg/kg body weight). Under both regimens, AGIQ at 0.5% (w/w) was supplemented, to dams from the gestation period (before LPS exposure) until weaning on PND 21 and to male offspring from weaning until PND 77 (adulthood). Compared with a control treatment, E-LPS treatment resulted in fewer NG2+ OL progenitor cells (OPCs) and an upregulation of Tcf4 at PND 6; by PND 21, low NG2+ OPC number persisted, but OLIG2+ OL lineage cells increased, while CNPase+ mature OLs counts were unchanged. By contrast, N-LPS treatment resulted in fewer OLIG2+ cells and an upregulation of Bmp4 at PND 6; by PND 21, NG2+ OPCs decreased, while GFAP+ astrocytes increased at both PND 6 and 21. After N-LPS treatment, Kl and Yy1 were downregulated and there were fewer Klotho+ and CNPase+ cells at PND 21. Results suggest that E-LPS treatment facilitates OPC differentiation into pre- and immature OLs until weaning, while N-LPS treatment suppresses OPC differentiation into mature OLs but facilitates astrocyte generation; however, these changes spontaneously recovered by adulthood under both regimens. AGIQ treatment ameliorated the effects of LPS treatment of both regimens, suggesting that LPS-induced disruption of OPC/OL differentiation occurs via neuroinflammation.
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Affiliation(s)
- Hiromu Okano
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Ryota Ojiro
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Xinyu Zou
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Qian Tang
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Shunsuke Ozawa
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Mihoko Koyanagi
- Global Scientific and Regulatory Affairs, San-Ei Gen F.F.I. Inc., 1-1-11 Sanwa-cho, Toyonaka, Osaka 561-8588, Japan
| | - Robert R Maronpot
- Maronpot Consulting, LLC, 1612 Medfield Road, Raleigh, NC 27607, USA
| | - Toshinori Yoshida
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Makoto Shibutani
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan; Institute of Global Innovation Research, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan.
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92
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Sachetto ATA, Mackman N. Monocyte Tissue Factor Expression: Lipopolysaccharide Induction and Roles in Pathological Activation of Coagulation. Thromb Haemost 2023; 123:1017-1033. [PMID: 37168007 PMCID: PMC10615589 DOI: 10.1055/a-2091-7006] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 05/08/2023] [Indexed: 05/13/2023]
Abstract
The coagulation system is a part of the mammalian host defense system. Pathogens and pathogen components, such as bacterial lipopolysaccharide (LPS), induce tissue factor (TF) expression in circulating monocytes that then activates the coagulation protease cascade. Formation of a clot limits dissemination of pathogens, enhances the recruitment of immune cells, and facilitates killing of pathogens. However, excessive activation of coagulation can lead to thrombosis. Here, we review studies on the mechanism of LPS induction of TF expression in monocytes and its contribution to thrombosis and disseminated intravascular coagulation. Binding of LPS to Toll-like receptor 4 on monocytes induces a transient expression of TF that involves activation of intracellular signaling pathways and binding of various transcription factors, such as c-rel/p65 and c-Fos/c-Jun, to the TF promoter. Inhibition of TF in endotoxemia and sepsis models reduces activation of coagulation and improves survival. Studies with endotoxemic mice showed that hematopoietic cells and myeloid cells play major roles in the activation of coagulation. Monocyte TF expression is also increased after surgery. Activated monocytes release TF-positive extracellular vesicles (EVs) and levels of circulating TF-positive EVs are increased in endotoxemic mice and in patients with sepsis. More recently, it was shown that inflammasomes contribute to the induction of TF expression and activation of coagulation in endotoxemic mice. Taken together, these studies indicate that monocyte TF plays a major role in activation of coagulation. Selective inhibition of monocyte TF expression may reduce pathologic activation of coagulation in sepsis and other diseases without affecting hemostasis.
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Affiliation(s)
- Ana T. A. Sachetto
- Division of Hematology, Department of Medicine, UNC Blood Research Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States
| | - Nigel Mackman
- Division of Hematology, Department of Medicine, UNC Blood Research Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States
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93
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Fan Y, Guan B, Xu J, Zhang H, Yi L, Yang Z. Role of toll-like receptor-mediated pyroptosis in sepsis-induced cardiomyopathy. Biomed Pharmacother 2023; 167:115493. [PMID: 37734261 DOI: 10.1016/j.biopha.2023.115493] [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: 06/12/2023] [Revised: 09/08/2023] [Accepted: 09/12/2023] [Indexed: 09/23/2023] Open
Abstract
Sepsis, a life-threatening dysregulated status of the host response to infection, can cause multiorgan dysfunction and mortality. Sepsis places a heavy burden on the cardiovascular system due to the pathological imbalance of hyperinflammation and immune suppression. Myocardial injury and cardiac dysfunction caused by the aberrant host responses to pathogens can lead to cardiomyopathy, one of the most critical complications of sepsis. However, many questions about the specific mechanisms and characteristics of this complication remain to be answered. The causes of sepsis-induced cardiac dysfunction include abnormal cardiac perfusion, myocardial inhibitory substances, autonomic dysfunction, mitochondrial dysfunction, and calcium homeostasis dysregulation. The fight between the host and pathogens acts as the trigger for sepsis-induced cardiomyopathy. Pyroptosis, a form of programmed cell death, plays a critical role in the progress of sepsis. Toll-like receptors (TLRs) act as pattern recognition receptors and participate in innate immune pathways that recognize damage-associated molecular patterns as well as pathogen-associated molecular patterns to mediate pyroptosis. Notably, pyroptosis is tightly associated with cardiac dysfunction in sepsis and septic shock. In line with these observations, induction of TLR-mediated pyroptosis may be a promising therapeutic approach to treat sepsis-induced cardiomyopathy. This review focuses on the potential roles of TLR-mediated pyroptosis in sepsis-induced cardiomyopathy, to shed light on this promising therapeutic approach, thus helping to prevent and control septic shock caused by cardiovascular disorders and improve the prognosis of sepsis patients.
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Affiliation(s)
- Yixuan Fan
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China; Intensive Care Unit, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Baoyi Guan
- Department of Internal Medicine-Cardiovascular, The First Affiliated Hospital of Guangzhou University of Chinese Medicine
| | - Jianxing Xu
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China; Intensive Care Unit, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - He Zhang
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China; National Clinical Research Center for Chinese Medicine Cardiology, Beijing, China
| | - Liang Yi
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China; Intensive Care Unit, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China.
| | - Zhixu Yang
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China; Intensive Care Unit, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China.
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94
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Han L, Zhang M, Li F, Su J, Wang R, Li G, Yang X. 10-hydroxy-2-decenoic acid alleviates lipopolysaccharide-induced intestinal mucosal injury through anti-inflammatory, antioxidant, and gut microbiota modulation activities in chickens. Front Microbiol 2023; 14:1285299. [PMID: 37915852 PMCID: PMC10616258 DOI: 10.3389/fmicb.2023.1285299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 10/04/2023] [Indexed: 11/03/2023] Open
Abstract
Introduction This study aimed to investigated the effects of 10-hydroxy-2-decenoic acid (10-HDA) on the growth performance, intestinal barrier, inflammatory response, oxidative stress, and gut microbiota of chickens challenged with lipopolysaccharide (LPS). Methods A total of 240 one-day-old chickens were randomly assigned to five treatment groups: (1) control group (basal diet + saline); (2) LPS group (basal diet + LPS); (3) Chlortetracycline (CTC) group (basal diet containing 75 mg/kg CTC + LPS); (4) 0.1% 10-HDA group (basal diet containing 1 g/kg 10-HDA + LPS); and (5) 0.5% 10-HDA group (basal diet containing 5 g/kg 10-HDA + LPS). All chickens were injected intraperitoneally with 0.5 mg/kg body weight of either LPS or saline at 17, 19, and 21 days of age. Results The results showed that dietary 10-HDA supplementation attenuated the loss in growth performance caused by the LPS challenge (p < 0.05). 10-HDA effectively alleviated LPS-induced intestinal mucosal injury, as evidenced by reduced bleeding, decreased serum diamine oxidase levels (p < 0.05), and increased villus/crypt ratios of the jejunum and ileum (p < 0.05). Dietary treatment with 0.1% 10-HDA reduced the concentrations of inflammatory cytokines (TNF-α, IL-1β, IL-6; p < 0.05), and increased immunoglobulin (IgA, IgG) and antioxidant enzyme levels (CAT, GSH-px, T-SOD) in the serum of LPS-challenged chickens (p < 0.05). These effects were similar to those observed in the CTC group. Moreover, 0.1% 10-HDA treatment reversed the LPS-induced variations in the mRNA expression of genes related to inflammation, antioxidant capacity, and intestinal tight junctions (p < 0.05). 16S rRNA analysis revealed that 10-HDA supplementation increased the relative abundance of Faecalibacterium and Clostridia_UCG-014 (p < 0.05). Additionally, it decreased the abundance of Clostridia_vadinBB60_group, Eubacterium_nodatum_group, and UC5-1-2E3 (p < 0.05). These changes were correlated with reduced inflammation and improved antioxidant capacity in the LPS-challenged chickens. Conclusion Collectively, dietary 10-HDA supplementation alleviated LPS-induced intestinal mucosal injury and the loss of growth performance through anti-inflammatory, antioxidant, and gut microbiota modulation activities in chickens. Moreover, 0.1% 10-HDA supplementation had comparable or even better protection for LPS-challenged chickens than supplementation with antibiotics or 0.5% 10-HDA. 10-HDA has the potential to be used as an alternative to antibiotics in protecting the intestinal health and improving the performance of poultry.
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Affiliation(s)
- Lianquan Han
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Maolu Zhang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Fuwei Li
- Institute of Poultry Science, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Jing Su
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Ruiming Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Guiming Li
- Institute of Poultry Science, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Xiaohui Yang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
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95
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Abuqwider J, Di Porzio A, Barrella V, Gatto C, Sequino G, De Filippis F, Crescenzo R, Spagnuolo MS, Cigliano L, Mauriello G, Iossa S, Mazzoli A. Limosilactobacillus reuteri DSM 17938 reverses gut metabolic dysfunction induced by Western diet in adult rats. Front Nutr 2023; 10:1236417. [PMID: 37908302 PMCID: PMC10613642 DOI: 10.3389/fnut.2023.1236417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 09/18/2023] [Indexed: 11/02/2023] Open
Abstract
Introduction Microencapsulation of probiotic bacteria is an efficient and innovative new technique aimed at preserving bacterial survival in the hostile conditions of the gastrointestinal tract. However, understanding whether a microcapsule preserves the effectiveness of the bacterium contained within it is of fundamental importance. Methods Male Wistar rats aged 90 days were fed a control diet or a Western diet for 8 weeks, with rats fed the Western diet divided into three groups: one receiving the diet only (W), the second group receiving the Western diet and free L. reuteri DSM 17938 (WR), and the third group receiving the Western diet and microencapsulated L. reuteri DSM 17938 (WRM). After 8 weeks of treatment, gut microbiota composition was evaluated, together with occludin, one of the tight junction proteins, in the ileum and the colon. Markers of inflammation were also quantified in the portal plasma, ileum, and colon, as well as markers for gut redox homeostasis. Results The Western diet negatively influenced the intestinal microbiota, with no significant effect caused by supplementation with free and microencapsulated L. reuteri. However, L. reuteri, in both forms, effectively preserved the integrity of the intestinal barrier, thus protecting enterocytes from the development of inflammation and oxidative stress. Conclusion From these whole data, it emerges that L. reuteri DSM 17938 can be an effective probiotic in preventing the unhealthy consequences of the Western diet, especially in the gut, and that microencapsulation preserves the probiotic effects, thus opening the formulation of new preparations to be able to improve gut function independent of dietary habits.
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Affiliation(s)
- Jumana Abuqwider
- Department of Agricultural Sciences, University of Naples Federico II, Naples, Italy
| | - Angela Di Porzio
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - Valentina Barrella
- Department of Biology, University of Naples Federico II, Naples, Italy
- NBFC, National Biodiversity Future Center, Palermo, Italy
| | - Cristina Gatto
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - Giuseppina Sequino
- Department of Agricultural Sciences, University of Naples Federico II, Naples, Italy
| | - Francesca De Filippis
- Department of Agricultural Sciences, University of Naples Federico II, Naples, Italy
| | | | - Maria Stefania Spagnuolo
- Department of Bio-Agrofood Science, Institute for the Animal Production System in the Mediterranean Environment, National Research Council Naples (CNR-ISPAAM), Naples, Italy
| | - Luisa Cigliano
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - Gianluigi Mauriello
- Department of Agricultural Sciences, University of Naples Federico II, Naples, Italy
| | - Susanna Iossa
- Department of Biology, University of Naples Federico II, Naples, Italy
- NBFC, National Biodiversity Future Center, Palermo, Italy
| | - Arianna Mazzoli
- Department of Biology, University of Naples Federico II, Naples, Italy
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96
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Luo P, Ji Y, Liu X, Zhang W, Cheng R, Zhang S, Qian X, Huang C. Affected inflammation-related signaling pathways in snake envenomation: A recent insight. Toxicon 2023; 234:107288. [PMID: 37703930 DOI: 10.1016/j.toxicon.2023.107288] [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: 07/23/2023] [Revised: 08/24/2023] [Accepted: 09/09/2023] [Indexed: 09/15/2023]
Abstract
Snake envenomation is well known to cause grievous pathological signs, including haemorrhagic discharge, necrosis, and respiratory distress. However, inflammatory reactions are also common envenoming manifestations that lead to successive damage, such as oedema, ulceration, lymphadenectasis, systemic inflammatory response syndrome (SIRS) and even multiple organ dysfunction syndrome (MODS). Interference with the inflammatory burst is hence important in the clinical treatment of snake envenomation. Here, we summarize the typical snake toxins (or venoms) that cause inflammatory reactions and the underlying signaling pathways. In brief, inflammatory reactions are usually triggered by snake venom phospholipase A2 (svPLA2), snake venom metalloprotease (SVMP), snake venom serine protease (SVSP) and C-type lectin/snaclec (CTL) as well as disintegrin (DIS) via multiple signaling pathways. They are nucleotide-binding oligomerization domain, leucine-rich repeat and pyrin domain-containing 3 (NLRP3), nuclear factor kappa-B (NF-κB), mitogen-activated protein kinase (MAPK), janus kinase/signal transducer and activator of transcription (JAK-STAT) and phosphoinositide 3-Kinase/protein kinase B (PI3K/PKB also called PI3K-AKT) signaling pathways. Activation of these pathways promotes the expression of pro-inflammatory molecules such as cytokines, especially interleukin-1β (IL-1β) which causes further inflammatory cascades and manifestations, such as swelling, fever, pain, and severe complications. Remarkably, almost half of introduced snake toxins (or venoms) have anti-inflammatory effects through blocking these pathways and suppressing the expression of pro-inflammatory molecules. Investigation of affected inflammation-related signaling pathways is meaningful to achieve better clinical treatment.
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Affiliation(s)
- Peiyi Luo
- Queen Mary School, Nanchang University, Nanchang, Jiangxi, 330000, PR China.
| | - Yuxin Ji
- Queen Mary School, Nanchang University, Nanchang, Jiangxi, 330000, PR China.
| | - Xiaohan Liu
- Second Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi, PR China.
| | - Weiyun Zhang
- Queen Mary School, Nanchang University, Nanchang, Jiangxi, 330000, PR China.
| | - Ruoxi Cheng
- Queen Mary School, Nanchang University, Nanchang, Jiangxi, 330000, PR China.
| | - Shuxian Zhang
- Queen Mary School, Nanchang University, Nanchang, Jiangxi, 330000, PR China.
| | - Xiao Qian
- Queen Mary School, Nanchang University, Nanchang, Jiangxi, 330000, PR China.
| | - Chunhong Huang
- College of Basic Medical Sciences, Nanchang University, Nanchang, Jiangxi, 330000, PR China.
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97
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Pan LL, Ren ZN, Yang J, Li BB, Huang YW, Song DX, Li X, Xu JJ, Bhatia M, Zou DW, Zhou CH, Sun J. Gut microbiota controls the development of chronic pancreatitis: A critical role of short-chain fatty acids-producing Gram-positive bacteria. Acta Pharm Sin B 2023; 13:4202-4216. [PMID: 37799394 PMCID: PMC10547962 DOI: 10.1016/j.apsb.2023.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 05/21/2023] [Accepted: 06/13/2023] [Indexed: 10/07/2023] Open
Abstract
Chronic pancreatitis (CP) is a progressive and irreversible fibroinflammatory disorder, accompanied by pancreatic exocrine insufficiency and dysregulated gut microbiota. Recently, accumulating evidence has supported a correlation between gut dysbiosis and CP development. However, whether gut microbiota dysbiosis contributes to CP pathogenesis remains unclear. Herein, an experimental CP was induced by repeated high-dose caerulein injections. The broad-spectrum antibiotics (ABX) and ABX targeting Gram-positive (G+) or Gram-negative bacteria (G-) were applied to explore the specific roles of these bacteria. Gut dysbiosis was observed in both mice and in CP patients, which was accompanied by a sharply reduced abundance for short-chain fatty acids (SCFAs)-producers, especially G+ bacteria. Broad-spectrum ABX exacerbated the severity of CP, as evidenced by aggravated pancreatic fibrosis and gut dysbiosis, especially the depletion of SCFAs-producing G+ bacteria. Additionally, depletion of SCFAs-producing G+ bacteria rather than G- bacteria intensified CP progression independent of TLR4, which was attenuated by supplementation with exogenous SCFAs. Finally, SCFAs modulated pancreatic fibrosis through inhibition of macrophage infiltration and M2 phenotype switching. The study supports a critical role for SCFAs-producing G+ bacteria in CP. Therefore, modulation of dietary-derived SCFAs or G+ SCFAs-producing bacteria may be considered a novel interventive approach for the management of CP.
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Affiliation(s)
- Li-Long Pan
- Wuxi Medical School, Jiangnan University, Wuxi 214122, China
| | - Zheng-Nan Ren
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China
| | - Jun Yang
- Department of General Surgery, Affiliated Hospital of Jiangnan University, Wuxi 214122, China
| | - Bin-Bin Li
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China
| | - Yi-Wen Huang
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China
| | - Dong-Xiao Song
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China
| | - Xuan Li
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China
| | - Jia-Jia Xu
- Department of General Medicine, Beicai Community Health Service Center of Pudong New District, Shanghai 214001, China
| | - Madhav Bhatia
- Department of Pathology, University of Otago, Christchurch 8140, New Zealand
| | - Duo-Wu Zou
- Department of Gastroenterology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Chun-Hua Zhou
- Department of Gastroenterology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Jia Sun
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China
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98
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Rusnak T, Azarcoya-Barrera J, Wollin B, Makarowski A, Nelson R, Field CJ, Jacobs RL, Richard C. A Physiologically Relevant Dose of 50% Egg-Phosphatidylcholine Is Sufficient in Improving Gut Permeability while Attenuating Immune Cell Dysfunction Induced by a High-Fat Diet in Male Wistar Rats. J Nutr 2023; 153:3131-3143. [PMID: 37586605 DOI: 10.1016/j.tjnut.2023.08.010] [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] [Revised: 08/02/2023] [Accepted: 08/10/2023] [Indexed: 08/18/2023] Open
Abstract
BACKGROUND Obesity is associated with increased intestinal permeability and a diminished immune response. Phosphatidylcholine (PC), a form of choline found in eggs, has been shown to beneficially modulate T-cell response in the context of obesity when provided as the sole form of choline in the diet. OBJECTIVE This study aimed to determine the impact of varying doses of PC as part of a high-fat diet (HFD) on immune cell function and intestinal permeability. METHODS Male Wistar rats 4 wk of age were randomly assigned to consume 1 of 6 diets for 12 wk containing the same amount of total choline but differing in the forms of choline: 1-control low-fat (CLF, 20% fat, 100% free choline [FC]); 2-control high-fat (CHF, 50% fat, 100% FC); 3-100% PC (100PC, 50% fat, 100% egg-PC); 4-75% PC (75PC, 50% fat, 75% egg-PC+25% FC); 5-50% PC (50PC, 50% fat, 50% egg-PC+50% FC); and 6-25% PC (25PC; 50% fat, 25% egg-PC+75% FC). Intestinal permeability was measured by fluorescein isothiocyanate-dextran. Immune function was assessed by ex vivo cytokine production of splenocytes and cells isolated from the mesenteric lymph node (MLN) after stimulation with different mitogens. RESULTS Feeding the CHF diet increased intestinal permeability compared with the CLF diet, and doses of PC 50% or greater returned permeability to levels similar to that of the CLF diet. Feeding the CHF diet lowered splenocyte production of interleukin (IL)-1β, IL-2, IL-10, and tumor necrosis factor-alpha, and MLN production of IL-2 compared with the CLF group. The 50PC diet most consistently significantly improved cytokine levels (IL-2, IL-10, tumor necrosis factor-alpha) compared with the CHF diet. CONCLUSIONS Our results show that a dose of 50% of total choline derived from egg-PC can ameliorate HFD-induced intestinal permeability and immune cell dysfunction.
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Affiliation(s)
- Tianna Rusnak
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Jessy Azarcoya-Barrera
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Bethany Wollin
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Alexander Makarowski
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Randal Nelson
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Catherine J Field
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - René L Jacobs
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Caroline Richard
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada.
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Chu HK, Ai Y, Cheng ZL, Yang L, Hou XH. Contribution of gut microbiota to drug-induced liver injury. Hepatobiliary Pancreat Dis Int 2023; 22:458-465. [PMID: 37365109 DOI: 10.1016/j.hbpd.2023.06.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 06/06/2023] [Indexed: 06/28/2023]
Abstract
Drug-induced liver injury (DILI) is caused by various drugs with complex pathogenesis, and diverse clinical and pathological phenotypes. Drugs damage the liver directly through drug hepatotoxicity, or indirectly through drug-mediated oxidative stress, immune injury and inflammatory insult, which eventually lead to hepatocyte necrosis. Recent studies have found that the composition, relative content and distribution of gut microbiota in patients and animal models of DILI have changed significantly. It has been confirmed that gut microbial dysbiosis brings about intestinal barrier destruction and microorganisms translocation, and the alteration of microbial metabolites may cause or aggravate DILI. In addition, antibiotics, probiotics, and fecal microbiota transplantation are all emerging as prospective therapeutic methods for DILI by regulating the gut microbiota. In this review, we discussed how the altered gut microbiota participates in DILI.
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Affiliation(s)
- Hui-Kuan Chu
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yan Ai
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Zi-Lu Cheng
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Ling Yang
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xiao-Hua Hou
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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100
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Sangineto M, Ciarnelli M, Cassano T, Radesco A, Moola A, Bukke VN, Romano A, Villani R, Kanwal H, Capitanio N, Duda L, Avolio C, Serviddio G. Metabolic reprogramming in inflammatory microglia indicates a potential way of targeting inflammation in Alzheimer's disease. Redox Biol 2023; 66:102846. [PMID: 37586250 PMCID: PMC10457454 DOI: 10.1016/j.redox.2023.102846] [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: 07/17/2023] [Accepted: 08/08/2023] [Indexed: 08/18/2023] Open
Abstract
Microglia activation drives the pro-inflammatory activity in the early stages of Alzheimer's disease (AD). However, the mechanistic basis is elusive, and the hypothesis of targeting microglia to prevent AD onset is little explored. Here, we demonstrated that upon LPS exposure, microglia shift towards an energetic phenotype characterised by high glycolysis and high mitochondrial respiration with dysfunction. Although the activity of electron transport chain (ETC) complexes is boosted by LPS, this is mostly devoted to the generation of reactive oxygen species. We showed that by inhibiting succinate dehydrogenase (SDH) with dimethyl malonate (DMM), it is possible to modulate the LPS-induced metabolic rewiring, facilitating an anti-inflammatory phenotype. DMM improves mitochondrial function in a direct way and by reducing LPS-induced mitochondrial biogenesis. Moreover, the block of SDH with DMM inhibits the recruitment of hypoxia inducible-factor 1 α (HIF-1α), which mediates the induction of glycolysis and cytokine expression. Similar bioenergetic alterations were observed in the microglia isolated from AD mice (3xTg-AD), which present high levels of circulating LPS and brain toll-like receptor4 (TLR4). Moreover, this well-established model of AD was used to show a potential effect of SDH inhibition in vivo as DMM administration abrogated brain inflammation and modulated the microglia metabolic alterations of 3xTg-AD mice. The RNA-sequencing analysis from a public dataset confirmed the consistent transcription of genes encoding for ETC subunits in the microglia of AD mice (5xFAD). In conclusion, TLR4 activation promotes metabolic changes and the pro-inflammatory activity in microglia, and SDH might represent a promising therapeutic target to prevent AD development.
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Affiliation(s)
- Moris Sangineto
- C.U.R.E. (University Center for Liver Disease Research and Treatment), Liver Unit, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy.
| | - Martina Ciarnelli
- C.U.R.E. (University Center for Liver Disease Research and Treatment), Liver Unit, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Tommaso Cassano
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Antonio Radesco
- Istituto Oncologico "Giovanni Paolo II", I.R.C.S.S. of Bari, Laboratory of Haematological Diagnostics and Cellular Therapy, Bari, Italy
| | - Archana Moola
- C.U.R.E. (University Center for Liver Disease Research and Treatment), Liver Unit, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Vidyasagar Naik Bukke
- C.U.R.E. (University Center for Liver Disease Research and Treatment), Liver Unit, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Antonino Romano
- C.U.R.E. (University Center for Liver Disease Research and Treatment), Liver Unit, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Rosanna Villani
- C.U.R.E. (University Center for Liver Disease Research and Treatment), Liver Unit, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Hina Kanwal
- C.U.R.E. (University Center for Liver Disease Research and Treatment), Liver Unit, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Nazzareno Capitanio
- Biochemistry Unit, Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Loren Duda
- Pathology Unit, Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Carlo Avolio
- Neurology Unit, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Gaetano Serviddio
- C.U.R.E. (University Center for Liver Disease Research and Treatment), Liver Unit, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
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