1
|
Wu Y, Bashir MA, Shao C, Wang H, Zhu J, Huang Q. Astaxanthin targets IL-6 and alleviates the LPS-induced adverse inflammatory response of macrophages. Food Funct 2024; 15:4207-4222. [PMID: 38512055 DOI: 10.1039/d4fo00610k] [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: 03/22/2024]
Abstract
Numerous natural compounds are recognized for their anti-inflammatory properties attributed to antioxidant effects and the modulation of key inflammatory factors. Among them, astaxanthin (AST), a potent carotenoid antioxidant, remains relatively underexplored regarding its anti-inflammatory mechanisms and specific molecular targets. In this study, human monocytic leukemia cell-derived macrophages (THP-1) were selected as experimental cells, and lipopolysaccharides (LPS) served as inflammatory stimuli. Upon LPS treatment, the oxidative stress was significantly increased, accompanied by remarkable cellular damage. Moreover, LPSs escalated the expression of inflammation-related molecules. Our results demonstrate that AST intervention could effectively alleviate LPS-induced oxidative stress, facilitate cellular repair, and significantly attenuate inflammation. Further exploration of the anti-inflammatory mechanism revealed AST could substantially inhibit NF-κB translocation and activation, and mitigate inflammatory factor production by hindering NF-κB through the antioxidant mechanism. We further confirmed that AST exhibited protective effects against cell damage and reduced the injury from inflammatory cytokines by activating p53 and inhibiting STAT3. In addition, utilizing network pharmacology and in silico calculations based on molecular docking, molecular dynamics simulation, we identified interleukin-6 (IL-6) as a prominent core target of AST anti-inflammation, which was further validated by the RNA interference experiment. This IL-6 binding capacity actually enabled AST to curb the positive feedback loop of inflammatory factors, averting the onset of possible inflammatory storms. Therefore, this study offers a new possibility for the application and development of astaxanthin as a popular dietary supplement of anti-inflammatory or immunomodulatory function.
Collapse
Affiliation(s)
- Yahui Wu
- CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Anhui Key Laboratory of Environmental Toxicology and Pollution Control Technology, Hefei Institute of Intelligent Agriculture, Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China.
- Science Island Branch of Graduate School, University of Science & Technology of China, Hefei 230026, China
| | - Mona A Bashir
- CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Anhui Key Laboratory of Environmental Toxicology and Pollution Control Technology, Hefei Institute of Intelligent Agriculture, Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China.
- Science Island Branch of Graduate School, University of Science & Technology of China, Hefei 230026, China
| | - Changsheng Shao
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - Han Wang
- CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Anhui Key Laboratory of Environmental Toxicology and Pollution Control Technology, Hefei Institute of Intelligent Agriculture, Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China.
- Science Island Branch of Graduate School, University of Science & Technology of China, Hefei 230026, China
| | - Jianxia Zhu
- CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Anhui Key Laboratory of Environmental Toxicology and Pollution Control Technology, Hefei Institute of Intelligent Agriculture, Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China.
- School of Nursing, Anhui Medical University, Hefei, Anhui 230032, China
| | - Qing Huang
- CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Anhui Key Laboratory of Environmental Toxicology and Pollution Control Technology, Hefei Institute of Intelligent Agriculture, Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China.
- Science Island Branch of Graduate School, University of Science & Technology of China, Hefei 230026, China
| |
Collapse
|
2
|
Vargas NT, Robertson CV, Marino FE. Acute ingestion of Ibuprofen does not influence the release of IL-6 or improve self-paced exercise in the heat despite altering cortical activity. Eur J Appl Physiol 2024:10.1007/s00421-024-05452-z. [PMID: 38446191 DOI: 10.1007/s00421-024-05452-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 02/24/2024] [Indexed: 03/07/2024]
Abstract
The present study tested the hypothesis that ingesting 800 mg Ibuprofen prior to self-paced cycling at a fixed rating of perceived exertion (RPE) improves performance by attenuating the release of Interleukin (IL)-6 and its signalling molecules, whilst simultaneously modulating cortical activity and cerebral oxygenation to the brain. Eight healthy, recreationally active males ingested 800 mg Ibuprofen or a placebo ~ 1 h prior to performing fixed RPE cycling for 60 min in 35 °C and 60% relative humidity at an intensity of hard to very hard (RPE = 16) with intermittent maximal (RPE = 20) sprints every 10 min. Power output (PO), core and mean skin temperatures (Tc, Tsk), respectively, and heart rate (HR) were measured continuously. Electroencephalography (EEG) recordings at the frontal (Fz), motor (Cz) and Parietal (Pz) areas (90 s) were collected every 5 min. IL-6, soluble glycoprotein receptor (sgp130) and IL-6 receptor (R) were collected at pre-, 30 min and immediately post-exercise. Mean PO, HR, Tc and Tsk, and RPE were not different between trials (P ≥ 0.33). At end-exercise, the change in IL-6, sgp130 and sIL-6R was not different between trials (P ≥ 0.12). The increase in α and β activity did not differ in any cortices between trials (P ≥ 0.07); however, there was a significant reduction in α/β activity in the Ibuprofen compared to placebo trials at all sites (P ≤ 0.05). Ingesting a maximal, over-the-counter dose of Ibuprofen prior to exercise in the heat does not attenuate the release of IL-6, nor improve performance, but may influence cortical activity evidenced by a greater reduction in α/β activity.
Collapse
Affiliation(s)
- Nicole T Vargas
- School of Medicine and Psychology, College of Health and Medicine, Australian National University, 54 Mills Rd, Florey Building, Canberra, ACT, 2601, Australia.
| | - Caroline V Robertson
- Griffith Centre For Mental Health and ALIVE National Centre for Mental Health Research Translation, Griffith University, Nathan, QLD, Australia
| | - Frank E Marino
- School of Rural Medicine and Research Group for Human Adaptation, Exercise and Health, Charles Sturt University, Orange, NSW, 2890, Australia
| |
Collapse
|
3
|
Lokau J, Petasch LM, Garbers C. The soluble IL-2 receptor α/CD25 as a modulator of IL-2 function. Immunology 2024; 171:377-387. [PMID: 38037265 DOI: 10.1111/imm.13723] [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: 08/29/2023] [Accepted: 11/13/2023] [Indexed: 12/02/2023] Open
Abstract
The pleiotropic cytokine interleukin-2 (IL-2) is an integral regulator of healthy and pathological immune responses, with the most important role in regulating the homeostasis of regulatory T cells. IL-2 signalling involves three distinct receptors: The IL-2 receptor α (IL-2Rα/CD25), IL-2Rβ, and IL-2Rγ/γc . While IL-2Rβ and γc are essential for signal transduction, IL-2Rα regulates the affinity of the receptor complex towards IL-2. A soluble form of the IL-2Rα (sIL-2Rα) is present in the blood of healthy individuals and increased under various pathological conditions. Although it is known that the sIL-2Rα retains its ability to bind IL-2, it is not fully understood how this molecule affects IL-2 function and thus immune responses. Here, we summarize the current knowledge on the generation and function of the sIL-2Rα. We describe the molecular mechanisms leading to sIL-2Rα generation and discuss the different IL-2 modulating functions that have been attributed to the sIL-2Rα. Finally, we describe attempts to utilize the sIL-2Rα as a therapeutic tool.
Collapse
Affiliation(s)
- Juliane Lokau
- Institute of Clinical Biochemistry, Hannover Medical School, Hannover, Germany
- Department of Pathology, Medical Faculty, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | - Lynn M Petasch
- Department of Pathology, Medical Faculty, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | - Christoph Garbers
- Institute of Clinical Biochemistry, Hannover Medical School, Hannover, Germany
| |
Collapse
|
4
|
Tomala J, Cao SD, Spangler JB. Engineering Anticytokine Antibodies for Immune Modulation. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 212:225-234. [PMID: 38166248 DOI: 10.4049/jimmunol.2300467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 08/28/2023] [Indexed: 01/04/2024]
Abstract
The delicate balance of immune homeostasis is regulated by the interactions between cytokines and their cognate cell surface signaling receptors. There is intensive interest in harnessing cytokines as drugs for diseases such as cancer and autoimmune disorders. However, the multifarious and often contradictory activities of cytokines, coupled with their short serum half-lives, limit clinical performance and result in dangerous toxicities. There is thus growing emphasis on manipulating natural cytokines to enhance their selectivity, safety, and durability through various strategies. One strategy that has gained traction in recent years is the development of anticytokine Abs that not only extend the circulation half-life of cytokines but also specifically bias their immune activities through multilayered molecular mechanisms. Although Abs are notorious for their antagonistic activities, this review focuses on anticytokine Abs that selectively agonize the activity of the target protein. This approach has potential to help realize the clinical promise of cytokine-based therapies.
Collapse
Affiliation(s)
- Jakub Tomala
- Department of Chemical & Biomolecular Engineering, Johns Hopkins University School of Engineering, Baltimore, MD
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Shanelle D Cao
- Department of Chemical & Biomolecular Engineering, Johns Hopkins University School of Engineering, Baltimore, MD
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Jamie B Spangler
- Department of Chemical & Biomolecular Engineering, Johns Hopkins University School of Engineering, Baltimore, MD
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD
- Bloomberg-Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University School of Medicine, Baltimore, MD
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Molecular Microbiology and Immunology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD
| |
Collapse
|
5
|
Pandey R, Bakay M, Hakonarson H. SOCS-JAK-STAT inhibitors and SOCS mimetics as treatment options for autoimmune uveitis, psoriasis, lupus, and autoimmune encephalitis. Front Immunol 2023; 14:1271102. [PMID: 38022642 PMCID: PMC10643230 DOI: 10.3389/fimmu.2023.1271102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 10/02/2023] [Indexed: 12/01/2023] Open
Abstract
Autoimmune diseases arise from atypical immune responses that attack self-tissue epitopes, and their development is intricately connected to the disruption of the JAK-STAT signaling pathway, where SOCS proteins play crucial roles. Conditions such as autoimmune uveitis, psoriasis, lupus, and autoimmune encephalitis exhibit immune system dysfunctions associated with JAK-STAT signaling dysregulation. Emerging therapeutic strategies utilize JAK-STAT inhibitors and SOCS mimetics to modulate immune responses and alleviate autoimmune manifestations. Although more research and clinical studies are required to assess their effectiveness, safety profiles, and potential for personalized therapeutic approaches in autoimmune conditions, JAK-STAT inhibitors and SOCS mimetics show promise as potential treatment options. This review explores the action, effectiveness, safety profiles, and future prospects of JAK inhibitors and SOCS mimetics as therapeutic agents for psoriasis, autoimmune uveitis, systemic lupus erythematosus, and autoimmune encephalitis. The findings underscore the importance of investigating these targeted therapies to advance treatment options for individuals suffering from autoimmune diseases.
Collapse
Affiliation(s)
- Rahul Pandey
- Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Marina Bakay
- Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Hakon Hakonarson
- Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, PA, United States
- Department of Pediatrics, The University of Pennsylvania School of Medicine, Philadelphia, PA, United States
| |
Collapse
|
6
|
Wang M, Li C, Li J, Hu W, Yu A, Tang H, Li J, Kuang H, Zhang H. Extraction, Purification, Structural Characteristics, Biological Activity and Application of Polysaccharides from Portulaca oleracea L. (Purslane): A Review. Molecules 2023; 28:4813. [PMID: 37375369 DOI: 10.3390/molecules28124813] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/12/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
Portulaca oleracea L. (purslane) is a widely distributed plant with a long history of cultivation and consumption. Notably, polysaccharides obtained from purslane exhibit surprising and satisfactory biological activities, which explain the various benefits of purslane on human health, including anti-inflammatory, antidiabetic, antitumor, antifatigue, antiviral and immunomodulatory effects. This article systematically reviews the extraction and purification methods, chemical structure, chemical modification, biological activity and other aspects of polysaccharides from purslane collected in the Chinese Pharmacopoeia, Flora of China, Web of Science, PubMed, Baidu Scholar, Google Scholar and CNKI databases in the last 14 years, using the keywords "Portulaca oleracea L. polysaccharides" and "purslane polysaccharides". The application of purslane polysaccharides in different fields is also summarized, and its application prospects are also discussed. This paper provides an updated and deeper understanding of purslane polysaccharides, which will provide useful guidance for the further optimization of polysaccharide structures and the development of purslane polysaccharides as a novel functional material, as well as a theoretical basis for its further research and application in human health and manufacturing development.
Collapse
Affiliation(s)
- Meng Wang
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Ministry of Education, The First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin 150040, China
| | - Caijiao Li
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Ministry of Education, The First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin 150040, China
| | - Jiaye Li
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Ministry of Education, The First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin 150040, China
| | - Wenjing Hu
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Ministry of Education, The First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin 150040, China
| | - Aiqi Yu
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Ministry of Education, The First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin 150040, China
| | - Haipeng Tang
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Ministry of Education, The First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin 150040, China
| | - Jiayan Li
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Ministry of Education, The First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin 150040, China
| | - Haixue Kuang
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Ministry of Education, The First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin 150040, China
| | - Huijie Zhang
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Ministry of Education, The First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin 150040, China
| |
Collapse
|
7
|
Weber BN, Giles JT, Liao KP. Shared inflammatory pathways of rheumatoid arthritis and atherosclerotic cardiovascular disease. Nat Rev Rheumatol 2023:10.1038/s41584-023-00969-7. [PMID: 37231248 DOI: 10.1038/s41584-023-00969-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/13/2023] [Indexed: 05/27/2023]
Abstract
The association between chronic inflammation and increased risk of cardiovascular disease in rheumatoid arthritis (RA) is well established. In the general population, inflammation is an established independent risk factor for cardiovascular disease, and much interest is placed on controlling inflammation to reduce cardiovascular events. As inflammation encompasses numerous pathways, the development of targeted therapies in RA provides an opportunity to understand the downstream effect of inhibiting specific pathways on cardiovascular risk. Data from these studies can inform cardiovascular risk management in patients with RA, and in the general population. This Review focuses on pro-inflammatory pathways targeted by existing therapies in RA and with mechanistic data from the general population on cardiovascular risk. Specifically, the discussions include the IL-1, IL-6 and TNF pathways, as well as the Janus kinase (JAK)-signal transducer and activator of transcription (STAT) signalling pathway, and the role of these pathways in RA pathogenesis in the joint alongside the development of atherosclerotic cardiovascular disease. Overall, some robust data support inhibition of IL-1 and IL-6 in decreasing the risk of cardiovascular disease, with growing data supporting IL-6 inhibition in both patients with RA and the general population to reduce the risk of cardiovascular disease.
Collapse
Affiliation(s)
- Brittany N Weber
- Division of Cardiology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Jon T Giles
- Columbia University, Vagelos College of Physicians & Surgeons, New York, NY, USA
| | - Katherine P Liao
- Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital/Harvard Medical School, Boston, MA, USA.
- Rheumatology Section, VA Boston Medical Center, Boston, MA, USA.
| |
Collapse
|
8
|
McFarlane A, Pohler E, Moraga I. Molecular and cellular factors determining the functional pleiotropy of cytokines. FEBS J 2023; 290:2525-2552. [PMID: 35246947 PMCID: PMC10952290 DOI: 10.1111/febs.16420] [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: 11/15/2021] [Revised: 01/26/2022] [Accepted: 03/03/2022] [Indexed: 11/30/2022]
Abstract
Cytokines are soluble factors vital for mammalian physiology. Cytokines elicit highly pleiotropic activities, characterized by their ability to induce a wide spectrum of functional responses in a diverse range of cell subsets, which makes their study very challenging. Cytokines activate signalling via receptor dimerization/oligomerization, triggering activation of the JAK (Janus kinase)/STAT (signal transducer and activator of transcription) signalling pathway. Given the strong crosstalk and shared usage of key components of cytokine signalling pathways, a long-standing question in the field pertains to how functional diversity is achieved by cytokines. Here, we discuss how biophysical - for example, ligand-receptor binding affinity and topology - and cellular - for example, receptor, JAK and STAT protein levels, endosomal compartment - parameters contribute to the modulation and diversification of cytokine responses. We review how these parameters ultimately converge into a common mechanism to fine-tune cytokine signalling that involves the control of the number of Tyr residues phosphorylated in the receptor intracellular domain upon cytokine stimulation. This results in different kinetics of STAT activation, and induction of specific gene expression programs, ensuring the generation of functional diversity by cytokines using a limited set of signalling intermediaries. We describe how these first principles of cytokine signalling have been exploited using protein engineering to design cytokine variants with more specific and less toxic responses for immunotherapy.
Collapse
Affiliation(s)
- Alison McFarlane
- Division of Cell Signalling and ImmunologySchool of Life SciencesUniversity of DundeeUK
| | - Elizabeth Pohler
- Division of Cell Signalling and ImmunologySchool of Life SciencesUniversity of DundeeUK
| | - Ignacio Moraga
- Division of Cell Signalling and ImmunologySchool of Life SciencesUniversity of DundeeUK
| |
Collapse
|
9
|
Nickle RA, DeOca KB, Garcia BL, Mannie MD. Soluble CD25 imposes a low-zone IL-2 signaling environment that favors competitive outgrowth of antigen-experienced CD25 high regulatory and memory T cells. Cell Immunol 2023; 384:104664. [PMID: 36642016 PMCID: PMC10257407 DOI: 10.1016/j.cellimm.2023.104664] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 10/13/2022] [Accepted: 01/03/2023] [Indexed: 01/07/2023]
Abstract
This study focused on soluble (s)CD25-mediated regulation of IL-2 signaling in murine and human CD4+ T cells. Recombinant sCD25 reversibly sequestered IL-2 to limit acute maximal proliferative responses while preserving IL-2 bioavailability to subsequently maintain low-zone IL-2 signaling during prolonged culture. By inhibiting IL-2 signaling during acute activation, sCD25 suppressed T-cell growth and inhibited IL-2-evoked transmembrane CD25 expression, thereby resulting in lower prevalence of CD25high T cells. By inhibiting IL-2 signaling during quiescent IL-2-mediated growth, sCD25 competed with transmembrane CD25, IL2Rβγ, and IL2Rαβγ receptors for limited pools of IL-2 such that sCD25 exhibited strong or weak inhibitory efficacy in IL-2-stimulated cultures of CD25low or CD25high T cells, respectively. Preferential blocking of IL-2 signaling in CD25low but not CD25high T cells caused competitive enrichment of CD25high memory/effector and regulatory FOXP3+ subsets. In conclusion, sCD25 modulates IL-2 bioavailability to limit CD25 expression during acute activation while enhancing CD25highT-cell dominance during low-zone homeostatic IL-2-mediated expansion, thereby 'flattening' the inflammatory curve over time.
Collapse
Affiliation(s)
- Rebecca A Nickle
- Department of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC, USA.
| | - Kayla B DeOca
- Department of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC, USA.
| | - Brandon L Garcia
- Department of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC, USA.
| | - Mark D Mannie
- Department of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC, USA.
| |
Collapse
|
10
|
Cooley A, Rayford KJ, Arun A, Villalta F, Lima MF, Pratap S, Nde PN. Trypanosoma cruzi Dysregulates piRNAs Computationally Predicted to Target IL-6 Signaling Molecules During Early Infection of Primary Human Cardiac Fibroblasts. Immune Netw 2022; 22:e51. [PMID: 36627941 PMCID: PMC9807959 DOI: 10.4110/in.2022.22.e51] [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: 03/17/2022] [Revised: 09/20/2022] [Accepted: 10/26/2022] [Indexed: 12/31/2022] Open
Abstract
Trypanosoma cruzi, the etiological agent of Chagas disease, is an intracellular protozoan parasite, which is now present in most industrialized countries. About 40% of T. cruzi infected individuals will develop severe, incurable cardiovascular, gastrointestinal, or neurological disorders. The molecular mechanisms by which T. cruzi induces cardiopathogenesis remain to be determined. Previous studies showed that increased IL-6 expression in T. cruzi patients was associated with disease severity. IL-6 signaling was suggested to induce pro-inflammatory and pro-fibrotic responses, however, the role of this pathway during early infection remains to be elucidated. We reported that T. cruzi can dysregulate the expression of host PIWI-interacting RNAs (piRNAs) during early infection. Here, we aim to evaluate the dysregulation of IL-6 signaling and the piRNAs computationally predicted to target IL-6 molecules during early T. cruzi infection of primary human cardiac fibroblasts (PHCF). Using in silico analysis, we predict that piR_004506, piR_001356, and piR_017716 target IL6 and SOCS3 genes, respectively. We validated the piRNAs and target gene expression in T. cruzi challenged PHCF. Secreted IL-6, soluble gp-130, and sIL-6R in condition media were measured using a cytokine array and western blot analysis was used to measure pathway activation. We created a network of piRNAs, target genes, and genes within one degree of biological interaction. Our analysis revealed an inverse relationship between piRNA expression and the target transcripts during early infection, denoting the IL-6 pathway targeting piRNAs can be developed as potential therapeutics to mitigate T. cruzi cardiomyopathies.
Collapse
Affiliation(s)
- Ayorinde Cooley
- Department of Microbiology, Immunology and Physiology, Meharry Medical College, Nashville, TN 37208, USA
| | - Kayla J. Rayford
- Department of Microbiology, Immunology and Physiology, Meharry Medical College, Nashville, TN 37208, USA
| | - Ashutosh Arun
- Department of Microbiology, Immunology and Physiology, Meharry Medical College, Nashville, TN 37208, USA
| | - Fernando Villalta
- Department of Microbiology, Immunology and Physiology, Meharry Medical College, Nashville, TN 37208, USA.,Department of Cell, Molecular, and Biomedical Sciences, School of Medicine, The City College of New York, New York, NY 10031, USA
| | - Maria F. Lima
- Department of Cell, Molecular, and Biomedical Sciences, School of Medicine, The City College of New York, New York, NY 10031, USA
| | - Siddharth Pratap
- School of Graduate Studies and Research, Meharry Medical College, Nashville, TN 37208, USA
| | - Pius N. Nde
- Department of Microbiology, Immunology and Physiology, Meharry Medical College, Nashville, TN 37208, USA
| |
Collapse
|
11
|
Abousaad S, Ahmed F, Abouzeid A, Ongeri EM. Meprin β expression modulates the interleukin-6 mediated JAK2-STAT3 signaling pathway in ischemia/reperfusion-induced kidney injury. Physiol Rep 2022; 10:e15468. [PMID: 36117389 PMCID: PMC9483619 DOI: 10.14814/phy2.15468] [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: 08/12/2022] [Revised: 08/29/2022] [Accepted: 08/30/2022] [Indexed: 06/15/2023] Open
Abstract
Meprin metalloproteinases have been implicated in the pathophysiology of ischemia/reperfusion (IR)-induced kidney injury. Previous in vitro data showed that meprin β proteolytically processes interleukin-6 (IL-6) resulting in its inactivation. Recently, meprin-β was also shown to cleave the IL-6 receptor. The goal of this study was to determine how meprin β expression impacts IL-6 and downstream modulators of the JAK2-STAT3-mediated signaling pathway in IR-induced kidney injury. IR was induced in 12-week-old male wild-type (WT) and meprin β knockout (βKO) mice and kidneys obtained at 24 h post-IR. Real-time PCR, western blot, and immunostaining/microscopy approaches were used to quantify mRNA and protein levels respectively, and immunofluorescence counterstaining with proximal tubule (PT) markers to determine protein localization. The mRNA levels for IL-6, CASP3 and BCL-2 increased significantly in both genotypes. Interestingly, western blot data showed increases in protein levels for IL-6, CASP3, and BCL-2 in the βKO but not in WT kidneys. However, immunohistochemical data showed increases in IL-6, CASP3, and BCL-2 proteins in select kidney tubules in both genotypes, shown to be PTs by immunofluorescence counterstaining. IR-induced increases in p-STAT-3 and p-JAK-2 in βKO at a global level but immunoflourescence counterstaining demonstrated p-JAK2 and p-STAT3 increases in select PT for both genotypes. BCL-2 increased only in the renal corpuscle of WT kidneys, suggesting a role for meprins expressed in leukocytes. Immunohistochemical analysis confirmed higher levels of leukocyte infiltration in WT kidneys when compared to βKO kidneys. The present data demonstrate that meprin β modulates IR-induced kidney injury in part via IL-6/JAK2/STAT3-mediated signaling.
Collapse
Affiliation(s)
- Shaymaa Abousaad
- Department of KinesiologyCollege of Health and Human Sciences, North Carolina A&T State UniversityGreensboroNorth CarolinaUSA
| | - Faihaa Ahmed
- Department of KinesiologyCollege of Health and Human Sciences, North Carolina A&T State UniversityGreensboroNorth CarolinaUSA
| | - Ayman Abouzeid
- Department of KinesiologyCollege of Health and Human Sciences, North Carolina A&T State UniversityGreensboroNorth CarolinaUSA
| | - Elimelda Moige Ongeri
- Department of KinesiologyCollege of Health and Human Sciences, North Carolina A&T State UniversityGreensboroNorth CarolinaUSA
| |
Collapse
|
12
|
Wang J, Sun Q, Zhang J, Wang H, Liu H. Classical Signaling and Trans-Signaling Pathways Stimulated by Megalobrama amblycephala IL-6 and IL-6R. Int J Mol Sci 2022; 23:ijms23042019. [PMID: 35216135 PMCID: PMC8880141 DOI: 10.3390/ijms23042019] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 02/09/2022] [Accepted: 02/10/2022] [Indexed: 12/20/2022] Open
Abstract
Interleukin-6 (IL-6) is a multipotent cytokine. IL-6 plays a dual role in inflammation through both classical signaling (IL-6 binds membrane IL-6 receptor/IL-6R) and trans-signaling (IL-6 binds soluble IL-6R). However, the regulation of IL-6 activity, especially the regulation of signaling pathways and downstream genes mediated by IL-6 trans-signaling, remains largely unclear in teleost. Grass carp (Ctenopharyngodon idellus) hepatic (L8824) cells, kidney (CIK) cells, and primary hepatocytes were used as test models in this study. First, the biological activity of recombinant blunt snout bream (Megalobrama amblycephala) IL-6 (rmaIL-6) and sIL-6R (rmasIL-6R) was verified by quantitative PCR (qPCR) and western blot. The western blot results showed that rmaIL-6 significantly upregulated signal transducer and activator of transcription 3 (STAT3) phosphorylation in L8824 cells and primary hepatocytes, while rmaIL-6 in combination with rmasIL-6R (rmaIL-6+rmasIL-6R) significantly upregulated STAT3 phosphorylation in all types of cells. Furthermore, maIL-6 and maIL-6+rmasIL-6R could only induce extracellular-signal-regulated kinase 1/2 (ERK1/2) phosphorylation in L8824 cells and CIK cells, respectively. Therefore, IL-6 mainly acts by activating the janus kinase (JAK)/STAT3 pathway rather than the mitogen-activated protein kinase (MEK)/ERK pathway. Finally, the activation of the JAK2/STAT3 pathway was shown to be essential for the generation of socs3a and socs3b induced by IL-6 trans-signaling after treatment by JAK2/STAT3 pathway inhibitors (c188-9 and TG101348). These findings provide functional insights into IL-6 classical signaling and trans-signaling regulatory mechanisms in teleost, enriching our knowledge of fish immunology.
Collapse
Affiliation(s)
- Jixiu Wang
- Key Lab of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair/Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (J.W.); (Q.S.); (J.Z.); (H.W.)
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan 430070, China
| | - Qianhui Sun
- Key Lab of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair/Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (J.W.); (Q.S.); (J.Z.); (H.W.)
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan 430070, China
| | - Jian Zhang
- Key Lab of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair/Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (J.W.); (Q.S.); (J.Z.); (H.W.)
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan 430070, China
| | - Huanling Wang
- Key Lab of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair/Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (J.W.); (Q.S.); (J.Z.); (H.W.)
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan 430070, China
| | - Hong Liu
- Key Lab of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair/Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (J.W.); (Q.S.); (J.Z.); (H.W.)
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan 430070, China
- Correspondence:
| |
Collapse
|
13
|
Pleiotropic, Unique and Shared Responses Elicited by IL-6 Family Cytokines in Human Vascular Endothelial Cells. Int J Mol Sci 2022; 23:ijms23031448. [PMID: 35163371 PMCID: PMC8836206 DOI: 10.3390/ijms23031448] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/18/2022] [Accepted: 01/20/2022] [Indexed: 02/07/2023] Open
Abstract
Vascular endothelial cells express glycoprotein 130 (gp130), which is utilized as a signaling receptor by cytokines in the interleukin-6 (IL-6) family. Several IL-6 family cytokines can be found in the circulatory system during physiological or pathological conditions, and may influence endothelial function and response. This study evaluated and compared the cellular and molecular responses induced by IL-6 family cytokines in human endothelial cells. A proteomic analysis showed that IL-6 family cytokines induce the release of a range of proteins from endothelial cells, such as C-C motif chemokine ligand 23, hepatocyte growth factor, and IL-6. Pathway analysis indicated that gp130-signaling in endothelial cells regulates several functions related to angiogenesis and immune cell recruitment. The present investigation also disclosed differences and similarities between different IL-6 family cytokines in their ability to induce protein release and regulate gene expression and intracellular signaling, in regards to which oncostatin M showed the most pronounced effect. Further, this study showed that soluble gp130 preferentially blocks trans-signaling-induced responses, but does not affect responses induced by classic signaling. In conclusion, IL-6 family cytokines induce both specific and overlapping molecular responses in endothelial cells, and regulate genes and proteins involved in angiogenesis and immune cell recruitment.
Collapse
|
14
|
CRLF1 and CLCF1 in Development, Health and Disease. Int J Mol Sci 2022; 23:ijms23020992. [PMID: 35055176 PMCID: PMC8780587 DOI: 10.3390/ijms23020992] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/13/2022] [Accepted: 01/14/2022] [Indexed: 12/12/2022] Open
Abstract
Cytokines and their receptors have a vital function in regulating various processes such as immune function, inflammation, haematopoiesis, cell growth and differentiation. The interaction between a cytokine and its specific receptor triggers intracellular signalling cascades that lead to altered gene expression in the target cell and consequent changes in its proliferation, differentiation, or activation. In this review, we highlight the role of the soluble type I cytokine receptor CRLF1 (cytokine receptor-like factor-1) and the Interleukin (IL)-6 cytokine CLCF1 (cardiotrophin-like cytokine factor 1) during development in physiological and pathological conditions with particular emphasis on Crisponi/cold-induced sweating syndrome (CS/CISS) and discuss new insights, challenges and possibilities arising from recent studies.
Collapse
|
15
|
Leung E, Crass RL, Jorgensen SCJ, Raybardhan S, Langford BJ, Moore WJ, Rhodes NJ. Pharmacokinetic/Pharmacodynamic Considerations of Alternate Dosing Strategies of Tocilizumab in COVID-19. Clin Pharmacokinet 2021; 61:155-165. [PMID: 34894345 PMCID: PMC8665708 DOI: 10.1007/s40262-021-01092-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/09/2021] [Indexed: 12/29/2022]
Abstract
Tocilizumab is one of few treatments that have been shown to improve mortality in patients with coronavirus disease 2019 (COVID-19), but increased demand has led to relative global shortages. Recently, it has been suggested that lower doses, or fixed doses, of tocilizumab could be a potential solution to conserve the limited global supply while conferring equivalent therapeutic benefit to the dosing regimens studied in major trials. The relationship between tocilizumab dose, exposure, and response in COVID-19 has not been adequately characterized. There are a number of pharmacokinetic (PK) parameters that likely differ between patients with severe COVID-19 and patients in whom tocilizumab was studied during the US FDA approval process. Likewise, it is unclear whether a threshold exposure is necessary for tocilizumab efficacy. The safety and efficacy of fixed versus weight-based dosing of tocilizumab has been evaluated outside of COVID-19, but it is uncertain if these observations are generalizable to severe or critical COVID-19. In the current review, we consider the potential advantages and limitations of alternative tocilizumab dosing strategies. Leveraging PK models and simulation analyses, we demonstrate that a fixed single dose of tocilizumab 400 mg is unlikely to produce PK exposures equivalent to those achieved in the REMAP-CAP trial, although weight-stratified dosing appears to produce more uniform exposure distribution. Data from current and future trials could provide PK/pharmacodynamic insight to better inform dosing strategies at the bedside. Ultimately, rational dosing strategies that balance available limited supply with patient needs are required.
Collapse
Affiliation(s)
- Elizabeth Leung
- Department of Pharmacy, St. Michael's Hospital/Unity Health Toronto, Toronto, ON, Canada.
- Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON, Canada.
- Li Ka Shing Knowledge Institute, Toronto, ON, Canada.
| | - Ryan L Crass
- Ann Arbor Pharmacometrics Group, Ann Arbor, MI, USA
| | - Sarah C J Jorgensen
- Department of Pharmacy, Mount Sinai Hospital, Toronto, ON, Canada
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | | | | | - W Justin Moore
- Department of Pharmacy, Northwestern Medicine, Chicago, IL, USA
| | - Nathaniel J Rhodes
- Department of Pharmacy, Northwestern Medicine, Chicago, IL, USA
- Department of Pharmacy Practice, College of Pharmacy Downers Grove Campus, Midwestern University, Downers Grove, IL, USA
- Pharmacometrics Center of Excellence, College of Pharmacy Downers Grove Campus, Midwestern University, Downers Grove, IL, USA
| |
Collapse
|
16
|
Matsumura F, Polz R, Singh S, Matsumura A, Scheller J, Yamashiro S. Investigation of Fascin1, a Marker of Mature Dendritic Cells, Reveals a New Role for IL-6 Signaling in CCR7-Mediated Chemotaxis. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2021; 207:938-949. [PMID: 34301846 PMCID: PMC8360331 DOI: 10.4049/jimmunol.2000318] [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: 03/24/2020] [Accepted: 05/31/2021] [Indexed: 11/19/2022]
Abstract
Migration of mature dendritic cells (DCs) to lymph nodes is critical for the initiation of adaptive immunity. CCR7, a G-protein-coupled receptor for CCL19/21 chemokines, is known to be essential for chemotaxis of mature DCs, but the molecular mechanism linking inflammation to chemotaxis remains unclear. We previously demonstrated that fascin1, an actin-bundling protein, increases chemotaxis of mature mouse DCs. In this article, we demonstrated that fascin1 enhanced IL-6 secretion and signaling of mature mouse DCs. Furthermore, we demonstrated that IL-6 signaling is required for chemotaxis. Blockage of IL-6 signaling in wild-type DCs with an anti-IL-6 receptor α (IL-6Rα) Ab inhibited chemotaxis toward CCL19. Likewise, knockout of IL-6Rα inhibited chemotaxis of bone marrow-derived DCs. The addition of soluble IL-6Rα and IL-6 rescued chemotaxis of IL-6Rα knockout bone marrow-derived DCs, underscoring the role of IL-6 signaling in chemotaxis. We found that IL-6 signaling is required for internalization of CCR7, the initial step of CCR7 recycling. CCR7 recycling is essential for CCR7-mediated chemotaxis, explaining why IL-6 signaling is required for chemotaxis of mature DCs. Our results have identified IL-6 signaling as a new regulatory pathway for CCR7/CCL19-mediated chemotaxis and suggest that rapid migration of mature DCs to lymph nodes depends on inflammation-associated IL-6 signaling.
Collapse
MESH Headings
- Animals
- Antibodies, Blocking/pharmacology
- Antigens, Differentiation/genetics
- Antigens, Differentiation/metabolism
- Cell Differentiation
- Cells, Cultured
- Chemotaxis
- Dendritic Cells/immunology
- Gene Expression Regulation
- Interleukin-6/metabolism
- Mice
- Mice, Knockout
- Microfilament Proteins/genetics
- Microfilament Proteins/metabolism
- Receptors, CCR7/metabolism
- Receptors, Interleukin-6/genetics
- Receptors, Interleukin-6/immunology
- Receptors, Interleukin-6/metabolism
- Receptors, Odorant/genetics
- Receptors, Odorant/metabolism
- Signal Transduction
Collapse
Affiliation(s)
- Fumio Matsumura
- Department of Molecular Biology and Biochemistry, Rutgers-New Brunswick, Piscataway, NJ;
| | - Robin Polz
- Institute of Biochemistry and Molecular Biology II, Medical Faculty, Heinrich-Heine-University Dusseldorf, Dusseldorf, Germany
| | - Sukhwinder Singh
- Department of Pathology, Immunology and Laboratory Medicine, Rutgers New Jersey Medical School, Newark, NJ; and
| | - Aya Matsumura
- Graduate School of Science, Nagoya University, Nagoya, Japan
| | - Jürgen Scheller
- Institute of Biochemistry and Molecular Biology II, Medical Faculty, Heinrich-Heine-University Dusseldorf, Dusseldorf, Germany
| | - Shigeko Yamashiro
- Department of Molecular Biology and Biochemistry, Rutgers-New Brunswick, Piscataway, NJ;
| |
Collapse
|
17
|
Pérez DJ, Patiño EB, Orozco J. Electrochemical Nanobiosensors as Point‐of‐Care Testing Solution to Cytokines Measurement Limitations. ELECTROANAL 2021. [DOI: 10.1002/elan.202100237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- David J. Pérez
- Max Planck Tandem Group in Nanobioengineering University of Antioquia Complejo Ruta N Calle 67, N° 52–20 050010 Medellín Colombia
- Grupo de Bioquímica Estructural de Macromoléculas Chemistry Institute University of Antioquia Lab 1–314 Calle 67, N° 53–108 050010 Medellín Colombia
| | - Edwin B. Patiño
- Grupo de Bioquímica Estructural de Macromoléculas Chemistry Institute University of Antioquia Lab 1–314 Calle 67, N° 53–108 050010 Medellín Colombia
| | - Jahir Orozco
- Max Planck Tandem Group in Nanobioengineering University of Antioquia Complejo Ruta N Calle 67, N° 52–20 050010 Medellín Colombia
| |
Collapse
|
18
|
Worrell JC, MacLeod MKL. Stromal-immune cell crosstalk fundamentally alters the lung microenvironment following tissue insult. Immunology 2021; 163:239-249. [PMID: 33556186 PMCID: PMC8014587 DOI: 10.1111/imm.13319] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/22/2021] [Accepted: 02/03/2021] [Indexed: 12/21/2022] Open
Abstract
Communication between stromal and immune cells is essential to maintain tissue homeostasis, mount an effective immune response and promote tissue repair. This 'crosstalk' occurs in both the steady state and following a variety of insults, for example, in response to local injury, at sites of infection or cancer. What do we mean by crosstalk between cells? Reciprocal activation and/or regulation occurs between immune and stromal cells, by direct cell contact and indirect mechanisms, including the release of soluble cytokines. Moving beyond cell-to-cell contact, this review investigates the complexity of 'cross-space' cellular communication. We highlight different examples of cellular communication by a variety of lung stromal and immune cells following tissue insults. This review examines how the 'geography of the lung microenvironment' is altered in various disease states; more specifically, we investigate how this influences lung epithelial cells and fibroblasts via their communication with immune cells and each other.
Collapse
Affiliation(s)
- Julie C. Worrell
- Institute of Infection, Immunity and InflammationUniversity of GlasgowGlasgowUK
| | - Megan K. L. MacLeod
- Institute of Infection, Immunity and InflammationUniversity of GlasgowGlasgowUK
| |
Collapse
|
19
|
Xu H, Liu J, Niu M, Song S, Wei L, Chen G, Ding Y, Wang Y, Su Z, Wang H. Soluble IL-6R-mediated IL-6 trans-signaling activation contributes to the pathological development of psoriasis. J Mol Med (Berl) 2021; 99:1009-1020. [PMID: 33835216 DOI: 10.1007/s00109-021-02073-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 03/26/2021] [Accepted: 03/30/2021] [Indexed: 02/08/2023]
Abstract
IL-6 has been suggested to function as an autocrine mitogen in the psoriatic epidermis. The biological activity of IL-6 relies on interactions with its receptors, including the membrane-bound IL-6 receptor (mIL-6R) and soluble IL-6 receptor (sIL-6R). Our study presents data showing that the levels of plasma IL-6 and sIL-6R were elevated in psoriatic patients. Genotyping of two single-nucleotide polymorphisms (SNPs) in IL-6R (rs4845617 and rs2228145) demonstrated that the SNP IL-6R (rs4845617) rather than IL-6R (rs2228145) shows a significant association with psoriasis (P = 0.006). To verify the functions of sIL-6R, cultured keratinocytes and imiquimod (IMQ)-induced psoriatic model mice were treated with sIL-6R. We found that the presence of sIL-6R in the HaCaT cell culture medium enhanced the IL-6-induced Stat3 activation, which resulted in abnormal keratinocyte proliferation and aberrant differentiation. Furthermore, the application of sIL-6R in vivo accelerated the pathological development of the disease. Our results demonstrate for the first time that genetic polymorphisms in the IL-6R gene are associated with psoriasis disease phenotypes in a Chinese psoriatic patient population; sIL-6R-mediated trans-signaling pathway plays a pivotal role in keratinocyte proliferation and differentiation, suggesting potential therapeutics for psoriasis. KEY MESSAGES: Patients with psoriasis displayed higher levels of IL-6 and sIL-6R compared with healthy controls. Analysis of genotypes revealed that IL-6R rs4845617 GG genotype associated with the risk of psoriasis. Supplement of sIL-6R further enhanced IL-6-induced Stat3 activation in keratinocytes. In vivo administration of sIL-6R accelerated, whereas sgp130FC alleviated, the pathological development of psoriasis.
Collapse
Affiliation(s)
- Hui Xu
- Center for Translational Medicine, State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, 210093, People's Republic of China
| | - Jun Liu
- Department of Dermatology, Drum Tower Hospital, Medical School, Nanjing University, Nanjing, 210008, China
| | - Mengyuan Niu
- Center for Translational Medicine, State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, 210093, People's Republic of China
| | - Shiyu Song
- Center for Translational Medicine, State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, 210093, People's Republic of China
| | - Lulu Wei
- Center for Translational Medicine, State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, 210093, People's Republic of China
| | - Gang Chen
- Department of Esthetic Plastic Surgery, The First Affiliated Hospital of Nanjing University of TCM, Nanjing, Jiangsu, 210029, People's Republic of China
| | - Yibing Ding
- Center for Translational Medicine, State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, 210093, People's Republic of China
| | - Yong Wang
- Center for Translational Medicine, State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, 210093, People's Republic of China
| | - Zhonglan Su
- Department of Dermatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, People's Republic of China.
| | - Hongwei Wang
- Center for Translational Medicine, State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, 210093, People's Republic of China.
| |
Collapse
|
20
|
Modulation of IL-6/STAT3 signaling axis in CD4+FOXP3- T cells represents a potential antitumor mechanism of azacitidine. Blood Adv 2021; 5:129-142. [PMID: 33570632 DOI: 10.1182/bloodadvances.2020002351] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 11/30/2020] [Indexed: 02/06/2023] Open
Abstract
CD4+ T cells orchestrate immune responses and are actively engaged in shaping tumor immunity. Signal transducer and activator of transcription (STAT) signaling controls the epigenetic tuning of CD4+ T-cell differentiation and polarization, and perturbed STAT signaling networks in CD4+ T cells subvert antitumor immunity in malignancies. Azacitidine (AZA), the mainstay therapy for high-risk myelodysplastic syndromes (HR-MDS), affects CD4+ T-cell polarization and function, but whether this contributes to AZA efficacy is currently unknown. By using functional proteomic, transcriptomic, and mutational analyses in 73 HR-MDS patients undergoing AZA therapy, we demonstrate that responding patients exhibited a coordinated CD4+ T-cell immune response and downregulated the inflammatory cytokine signaling pathways in CD4+ T cells after AZA, in contrast to nonresponders who upregulated the same pathways. We further observed an AZA-mediated downregulation of intereukin-6 (IL-6)-induced STAT3 phosphorylation in CD4+FOXP3- conventional T cells (Tcons) that correlated independently with better response and survival, whereas it was also not associated with the mutation number and profile of the patients. The AZA-induced downregulation of IL-6/STAT3 axis in Tcons restored the STAT signaling architecture in CD4+ T-cell subsets, whereas STAT signaling networks remained disorganized in patients who upregulated IL-6/STAT3 activity in Tcons. Given the pivotal role of CD4+ T cells in adaptive immunity, our findings suggest that the downregulation of the IL-6/STAT3 pathway in Tcons potentially constitutes a previously unrecognized immune-mediated mechanism of action of AZA and sets the scene for developing rational strategies of AZA combinations with IL-6/STAT3 axis inhibitors.
Collapse
|
21
|
Logan SM, Storey KB. Markers of tissue remodeling and inflammation in the white and brown adipose tissues of a model hibernator. Cell Signal 2021; 82:109975. [PMID: 33711429 DOI: 10.1016/j.cellsig.2021.109975] [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: 01/18/2021] [Revised: 03/04/2021] [Accepted: 03/05/2021] [Indexed: 11/16/2022]
Abstract
The thirteen-lined ground squirrel is a model fat-storing hibernator that nearly doubles its weight in the fall to fuel metabolism with triglycerides throughout the winter months. Hibernator brown and white adipose tissue (BAT, WAT) are important to study in terms of their inflammatory profile and tissue remodeling mechanisms since controlled and natural regulation of these processes could inform new pharmacological interventions that limit oxidative stress and inflammation in the adipose tissues of humans suffering from obesity, promote non-shivering thermogenesis-mediated weight loss, or prevent tissue damage in transplantable organs emerging from cold-storage. Thus, markers of inflammation like cytokines and soluble receptors and tissue remodeling proteins such as matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs) were investigated in normothermic, torpid, and arousing ground squirrels. Multiplex protein assays and western blotting revealed fewer changes in WAT compared to BAT. Pro-inflammatory IL-1α levels increased during torpor and soluble epidermal growth factor receptor protein levels increased during arousal in BAT. Given their known roles in other model systems, these proteins could regulate processes like adipogenesis, lipid catabolism, or cell motility. Decreased TIMP2 levels combined with maintained MMP2 or MMP3 protein levels suggested that BAT may avoid tissue remodeling until arousal. No changes in WAT inflammatory cytokines or soluble receptors as well as decreased MMP2 levels during torpor and arousal suggested inflammation and modification to the extracellular matrix is likely suppressed in WAT. This study emphasizes the fat-but-fit nature of the hibernating ground squirrel and the ability of its fat stores to suppress inflammation.
Collapse
Affiliation(s)
- Samantha M Logan
- Institute of Biochemistry, Departments of Biology and Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada
| | - Kenneth B Storey
- Institute of Biochemistry, Departments of Biology and Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada.
| |
Collapse
|
22
|
Th17 Cells in Inflammatory Bowel Disease: Cytokines, Plasticity, and Therapies. J Immunol Res 2021; 2021:8816041. [PMID: 33553436 PMCID: PMC7846404 DOI: 10.1155/2021/8816041] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 12/15/2020] [Accepted: 01/12/2021] [Indexed: 12/22/2022] Open
Abstract
Autoimmune diseases (such as rheumatoid arthritis, asthma, autoimmune bowel disease) are a complex disease. Improper activation of the immune system or imbalance of immune cells can cause the immune system to transform into a proinflammatory state, leading to autoimmune pathological damage. Recent studies have shown that autoimmune diseases are closely related to CD4+ T helper cells (Th). The original CD4 T cells will differentiate into different T helper (Th) subgroups after activation. According to their cytokines, the types of Th cells are different to produce lineage-specific cytokines, which play a role in autoimmune homeostasis. When Th differentiation and its cytokines are not regulated, it will induce autoimmune inflammation. Autoimmune bowel disease (IBD) is an autoimmune disease of unknown cause. Current research shows that its pathogenesis is closely related to Th17 cells. This article reviews the role and plasticity of the upstream and downstream cytokines and signaling pathways of Th17 cells in the occurrence and development of autoimmune bowel disease and summarizes the new progress of IBD immunotherapy.
Collapse
|
23
|
The Association between Neighborhood Disorder and Health: Exploring the Moderating Role of Genotype and Marriage. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18030898. [PMID: 33494231 PMCID: PMC7908190 DOI: 10.3390/ijerph18030898] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 01/12/2021] [Accepted: 01/19/2021] [Indexed: 01/19/2023]
Abstract
The present study extends prior research on the link between neighborhood disorder and health by testing an integrated model that combines various social and biological factors. Hypotheses were tested using a sample of 325 African American women from the Family and Community Health Study (FACHS). As expected, inflammatory burden was the biophysiological mechanism that mediated much of the association between neighborhood physical disorder and perceived physical health. This finding provided additional support for the view that global self-ratings of health are powerful predictors of morbidity because, in large measure, they are indicators of chronic, systemic inflammation. Further, both genetic variation and marital status served to moderate the association between neighborhood disorder and health. Finally, being married largely eliminated the probability that neighborhood disorder would combine with genetic vulnerability to increase inflammatory burden and perceived illness. Overall, the findings demonstrate the value of constructing integrated models that specify various biophysiological mechanisms that link social conditions to physical health.
Collapse
|
24
|
Valin A, Del Rey MJ, Municio C, Usategui A, Romero M, Fernández-Felipe J, Cañete JD, Blanco FJ, Ruano Y, Criado G, Pablos JL. IL6/sIL6R regulates TNFα-inflammatory response in synovial fibroblasts through modulation of transcriptional and post-transcriptional mechanisms. BMC Mol Cell Biol 2020; 21:74. [PMID: 33126846 PMCID: PMC7596982 DOI: 10.1186/s12860-020-00317-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 10/14/2020] [Indexed: 01/01/2023] Open
Abstract
Introduction The clinical efficacy of specific interleukin-6 inhibitors has confirmed the central role of IL6 in rheumatoid arthritis (RA). However the local role of IL6, in particular in synovial fibroblasts (SF) as a direct cellular target to IL6/sIL6R signal is not well characterized. The purpose of the study was to characterize the crosstalk between TNFα and IL6/sIL6R signaling to the effector pro-inflammatory response of SF. Methods SF lines were stimulated with either TNFα, IL6/sIL6R, or both together, for the time and dose indicated for each experiment, and where indicated, cells were treated with inhibitors actinomycin D, adalimumab, ruxolitinib and cycloheximide. mRNA expression of cytokines, chemokines and matrix metalloproteases (MMPs) were analyzed by quantitative RT-PCR. Level of IL8/CXCL8 and CCL8 in culture supernatants was measured by ELISA. Mononuclear and polymorphonuclear cells migration assays were assessed by transwell using conditioned medium from SF cultures. Statistical analyses were performed as indicated in the corresponding figure legends and a p-value < 0.05 was considered statistically significant. Results The stimulation of SF with IL6/sIL6R and TNFα, cooperatively promotes the expression of mono- and lymphocytic chemokines such as IL6, CCL8 and CCL2, as well as matrix degrading enzymes such as MMP1, while inhibiting the induction of central neutrophil chemokines such as IL8/CXCL8. These changes in the pattern of chemokines expression resulted in reduced polymorphonuclear (PMN) and increased mononuclear cells (MNC) chemoattraction by SF. Mechanistic analyses of the temporal expression of genes demonstrated that the cooperative regulation mediated by these two factors is mostly induced through de novo transcriptional mechanisms activated by IL6/sIL6R. Furthermore, we also demonstrate that TNFα and IL6/sIL6R cooperation is partially mediated by the expression of secondary factors signaling through JAK/STAT pathways. Conclusions These results point out to a highly orchestrated response to IL6 in TNFα-induced SF and provide additional insights into the role of IL6/sIL6R in the context of RA, highlighting the contribution of IL6/sIL6R to the interplay of SF with other inflammatory cells. Supplementary information Supplementary information accompanies this paper at 10.1186/s12860-020-00317-7.
Collapse
Affiliation(s)
- Alvaro Valin
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain. .,Present Address: Springer Healthcare Iberica SL, Madrid, Spain.
| | - Manuel J Del Rey
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Cristina Municio
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Alicia Usategui
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Marina Romero
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Jesús Fernández-Felipe
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Juan D Cañete
- Unitat d'Artritis, Servei de Reumatologia, Hospital Clínic de Barcelona and Institut d'Investigacions Biomèdiques August Pí i Sunyer, Barcelona, Spain
| | - Francisco J Blanco
- Laboratorio de Investigación Osteoarticular y del Envejecimiento, Instituto de Investigación Biomédica de A Coruña, INIBIC, A Coruña, Spain
| | - Yolanda Ruano
- Servicio de Anatomía Patológica, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Gabriel Criado
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain
| | - José L Pablos
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain. .,Servicio de Reumatología, Hospital 12 de Octubre, Universidad Complutense de Madrid, 28041, Madrid, Spain.
| |
Collapse
|
25
|
Veeramani S, Weiner GJ. Quantification of Receptor Occupancy by Ligand—An Understudied Class of Potential Biomarkers. Cancers (Basel) 2020; 12:cancers12102956. [PMID: 33066142 PMCID: PMC7601969 DOI: 10.3390/cancers12102956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 10/01/2020] [Indexed: 11/16/2022] Open
Abstract
Molecular complexes, such as ligand–receptor complexes, are vital for both health and disease and can be shed into the circulation in soluble form. Relatively little is known about the biology of soluble ligand–receptor complexes. The functional importance of such complexes and their potential use as clinical biomarkers in diagnosis and therapy remains underappreciated. Most traditional technologies used to study ligand–receptor complexes measure the individual levels of soluble ligands or receptors rather than the complexes themselves. The fraction of receptors occupied by ligand, and the potential clinical relevance of such information, has been largely overlooked. Here, we review the biological significance of soluble ligand–receptor complexes with a specific focus on their potential as biomarkers of cancer and other inflammatory diseases. In addition, we discuss a novel RNA aptamer-based technology, designated ligand–receptor complex-binding aptamers (LIRECAP), that can provide precise measurement of the fraction of a soluble receptor occupied by its ligand. The potential applicability of the LIRECAP technology as a biomarker discovery platform is also described.
Collapse
Affiliation(s)
- Suresh Veeramani
- Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA 52241, USA;
- Department of Internal Medicine, University of Iowa, Iowa City, IA 52241, USA
| | - George J. Weiner
- Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA 52241, USA;
- Department of Internal Medicine, University of Iowa, Iowa City, IA 52241, USA
- Correspondence:
| |
Collapse
|
26
|
Perrin P, Collongues N, Baloglu S, Bedo D, Bassand X, Lavaux T, Gautier-Vargas G, Keller N, Kremer S, Fafi-Kremer S, Moulin B, Benotmane I, Caillard S. Cytokine release syndrome-associated encephalopathy in patients with COVID-19. Eur J Neurol 2020; 28:248-258. [PMID: 32853434 PMCID: PMC7461405 DOI: 10.1111/ene.14491] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 08/18/2020] [Indexed: 12/17/2022]
Abstract
Background and purpose Neurological manifestations in coronavirus disease (COVID)‐2019 may adversely affect clinical outcomes. Severe COVID‐19 and uremia are risk factors for neurological complications. However, the lack of insight into their pathogenesis, particularly with respect to the role of the cytokine release syndrome (CRS), is currently hampering effective therapeutic interventions. The aims of this study were to describe the neurological manifestations of patients with COVID‐19 and to gain pathophysiological insights with respect to CRS. Methods In this longitudinal study, we performed extensive clinical, laboratory and imaging phenotyping in five patients admitted to our renal unit. Results Neurological presentation included confusion, tremor, cerebellar ataxia, behavioral alterations, aphasia, pyramidal syndrome, coma, cranial nerve palsy, dysautonomia, and central hypothyroidism. Notably, neurological disturbances were accompanied by laboratory evidence of CRS. Severe acute respiratory syndrome coronavirus‐2 (SARS‐CoV‐2) was undetectable in the cerebrospinal fluid (CSF). Hyperalbuminorrachia and increased levels of the astroglial protein S100B were suggestive of blood−brain barrier (BBB) dysfunction. Brain magnetic resonance imaging findings comprised evidence of acute leukoencephalitis (n = 3, one of whom had a hemorrhagic form), cytotoxic edema mimicking ischaemic stroke (n = 1), or normal results (n = 2). Treatment with corticosteroids and/or intravenous immunoglobulins was attempted, resulting in rapid recovery from neurological disturbances in two cases. SARS‐CoV2 was undetectable in 88 of the 90 patients with COVID‐19 who underwent Reverse Transcription‐PCR testing of CSF. Conclusions Patients with COVID‐19 can develop neurological manifestations that share clinical, laboratory and imaging similarities with those of chimeric antigen receptor T‐cell‐related encephalopathy. The pathophysiological underpinnings appear to involve CRS, endothelial activation, BBB dysfunction, and immune‐mediated mechanisms.
Collapse
Affiliation(s)
- P Perrin
- Department of Nephrology and Transplantation, University Hospital, Strasbourg, France.,Fédération de Médecine Translationnelle (FMTS), Strasbourg, France.,INSERM U1109, LabEx TRANSPLANTEX, Strasbourg, France
| | - N Collongues
- Fédération de Médecine Translationnelle (FMTS), Strasbourg, France.,Department of Neurology, University Hospital, Strasbourg, France.,Clinical Center for Investigation, INSERM U1434, Strasbourg, France
| | - S Baloglu
- Department of Neuroradiology, University Hospital, Strasbourg, France
| | - D Bedo
- Department of Nephrology and Transplantation, University Hospital, Strasbourg, France
| | - X Bassand
- Department of Nephrology and Transplantation, University Hospital, Strasbourg, France
| | - T Lavaux
- Department of Biochemistry and Molecular Biology, University Hospital, Strasbourg, France
| | - G Gautier-Vargas
- Department of Nephrology and Transplantation, University Hospital, Strasbourg, France
| | - N Keller
- Department of Nephrology and Dialysis, University Hospital, Strasbourg, France
| | - S Kremer
- Department of Neuroradiology, University Hospital, Strasbourg, France
| | - S Fafi-Kremer
- Fédération de Médecine Translationnelle (FMTS), Strasbourg, France.,INSERM U1109, LabEx TRANSPLANTEX, Strasbourg, France.,Department of Virology, Strasbourg University Hospital, Strasbourg, France
| | - B Moulin
- Department of Nephrology and Transplantation, University Hospital, Strasbourg, France.,Fédération de Médecine Translationnelle (FMTS), Strasbourg, France.,INSERM U1109, LabEx TRANSPLANTEX, Strasbourg, France
| | - I Benotmane
- Department of Nephrology and Transplantation, University Hospital, Strasbourg, France.,Fédération de Médecine Translationnelle (FMTS), Strasbourg, France.,INSERM U1109, LabEx TRANSPLANTEX, Strasbourg, France.,Department of Virology, Strasbourg University Hospital, Strasbourg, France
| | - S Caillard
- Department of Nephrology and Transplantation, University Hospital, Strasbourg, France.,Fédération de Médecine Translationnelle (FMTS), Strasbourg, France.,INSERM U1109, LabEx TRANSPLANTEX, Strasbourg, France
| |
Collapse
|
27
|
Wang Z, Liang Y, Zhang D, Wu X, Yu J, Zhang Z, Li Y, Sun C, Tang Z, Liu L. Protective Effects of Polysaccharide Extracted from Portulacae oleracea L. on Colitis Induced by Dextran Sulfate Sodium. J Med Food 2019; 23:125-131. [PMID: 31770044 DOI: 10.1089/jmf.2019.4414] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Polysaccharide from Ma-chi-xian (Portulacae oleracea L., POLP) was prepared and the therapeutic effect on dextran sodium sulfate-induced colitis mice was investigated in this study. The results of clinical activity score and H&E staining confirmed the therapeutic effect of POLP. POLP could diminished the symptoms of colitis and improve colon histopathological structure of the colitis mice. The expression levels of four cytokines were determined. The concentrations of PGE2 and IL-6 were downregulated by POLP treatment. The COX-2 protein expression levels and the STAT3 phosphorylation levels were detected. The results showed that these two protein levels were all increased in colitis and decreased after POLP treatment, indicating that these two proteins were closely related with the protective effect of POLP. Because the synthesis of PGE2 is catalyzed by COX-2 and phosphorylation of STAT3 can induce the expression of COX-2, it was concluded that STAT3 was a key protein related to the POLP exerting its activity in colitis.
Collapse
Affiliation(s)
- Zheng Wang
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Yanni Liang
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Dongbo Zhang
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Xue Wu
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Jingao Yu
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Zhen Zhang
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Yi Li
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Chen Sun
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Zhishu Tang
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Li Liu
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
| |
Collapse
|
28
|
Logan SM, Storey KB. Angiogenic signaling in the lungs of a metabolically suppressed hibernating mammal ( Ictidomys tridecemlineatus). PeerJ 2019; 7:e8116. [PMID: 31763078 PMCID: PMC6870509 DOI: 10.7717/peerj.8116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 10/29/2019] [Indexed: 01/18/2023] Open
Abstract
To conserve energy in times of limited resource availability, particularly during cold winters, hibernators suppress even the most basic of physiologic processes. Breathing rates decrease from 40 breaths/minute to less than 1 breath/min as they decrease body temperature from 37 °C to ambient. Nevertheless, after months of hibernation, these incredible mammals emerge from torpor unscathed. This study was conducted to better understand the protective and possibly anti-inflammatory adaptations that hibernator lungs may use to prevent damage associated with entering and emerging from natural torpor. We postulated that the differential protein expression of soluble protein receptors (decoy receptors that sequester soluble ligands to inhibit signal transduction) would help identify inhibited inflammatory signaling pathways in metabolically suppressed lungs. Instead, the only two soluble receptors that responded to torpor were sVEGFR1 and sVEGFR2, two receptors whose full-length forms are bound by VEGF-A to regulate endothelial cell function and angiogenesis. Decreased sVEGFR1/2 correlated with increased total VEGFR2 protein levels. Maintained or increased levels of key γ-secretase subunits suggested that decreased sVEGFR1/2 protein levels were not due to decreased levels of intramembrane cleavage complex subunits. VEGF-A protein levels did not change, suggesting that hibernators may regulate VEGFR1/2 signaling at the level of the receptor instead of increasing relative ligand abundance. A panel of angiogenic factors used to identify biomarkers of angiogenesis showed a decrease in FGF-1 and an increase in BMP-9. Torpid lungs may use VEGF and BMP-9 signaling to balance angiogenesis and vascular stability, possibly through the activation of SMAD signaling for adaptive tissue remodeling.
Collapse
Affiliation(s)
- Samantha M. Logan
- Institute of Biochemistry, Departments of Biology and Chemistry, Carleton University, Ottawa, ON, Canada
| | - Kenneth B. Storey
- Institute of Biochemistry, Departments of Biology and Chemistry, Carleton University, Ottawa, ON, Canada
| |
Collapse
|
29
|
Shang S, Liu L, Wu X, Fan F, Hu E, Wang L, Ding Y, Zhang Y, Lu X. Inhibition of PI3Kγ by AS605240 Protects tMCAO Mice by Attenuating Pro-Inflammatory Signaling and Cytokine Release in Reactive Astrocytes. Neuroscience 2019; 415:107-120. [PMID: 31195053 DOI: 10.1016/j.neuroscience.2019.06.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 05/31/2019] [Accepted: 06/02/2019] [Indexed: 12/29/2022]
Abstract
The intense and prolonged inflammatory response after ischemic stroke significantly contributes to the secondary neural injury. PI3Kγ, which is involved in the regulation of vascular permeability, chemotactic leukocyte migration and microglia activation, is a key target for intervention in the inflammatory response. In this study, we identified the protective effect of the PI3Kγ inhibitor AS605240 against stroke-related injury in the mouse model of transient intraluminal middle cerebral artery occlusion (tMCAO). The results showed that administration of AS605240 could improve the neurological function score, reduce the infarct size and decrease astrocyte activation in the tMCAO mice after injury. The inhibitory effect of AS605240 on microglia activation is relatively clear. Therefore, in this study, the effects of AS605240 on astrocytes were studied in cell cultures. IL-6 and its soluble receptor were used to construct the astrocyte activation model. AS605240 treatment significantly reduced the astrocyte activation markers and the morphological changes of cells. We also identified 13 inflammatory factors whose expression was significantly upregulated by IL-6/sIL-6R and significantly inhibited by AS605240 at the protein level, and seven of those factors were verified at the mRNA level. These results indicated that specific inhibition of PI3Kγ could reduce astrocyte activation induced by inflammation, which might aid the repair and remodeling of neurons in the later stage after ischemic stroke.
Collapse
Affiliation(s)
- Sen Shang
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, PR China
| | - Lin Liu
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, PR China
| | - Xingjuan Wu
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, PR China
| | - Fan Fan
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, PR China
| | - Erling Hu
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, PR China
| | - Leilei Wang
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, PR China
| | - Yan Ding
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, PR China
| | - Yali Zhang
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, PR China
| | - Xiaoyun Lu
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, PR China.
| |
Collapse
|
30
|
Achieng AO, Guyah B, Cheng Q, Ong'echa JM, Ouma C, Lambert CG, Perkins DJ. Molecular basis of reduced LAIR1 expression in childhood severe malarial anaemia: Implications for leukocyte inhibitory signalling. EBioMedicine 2019; 45:278-289. [PMID: 31257148 PMCID: PMC6642411 DOI: 10.1016/j.ebiom.2019.06.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 06/18/2019] [Accepted: 06/20/2019] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Leukocyte-associated immunoglobulin like receptor-1 (LAIR1) is a transmembrane inhibitory receptor that influences susceptibility to a myriad of inflammatory diseases. Our recent investigations of severe malarial anaemia (SMA) pathogenesis in Kenyan children discovered that novel LAIR1 genetic variants which were associated with decreased LAIR1 transcripts enhanced the longitudinal risk of SMA and all-cause mortality. METHODS To characterize the molecular mechanism(s) responsible for altered LAIR1 signalling in severe malaria, we determined LAIR1 transcripts and protein, sLAIR1, sLAIR2, and complement component 1q (C1q) in children with malarial anaemia, followed by a series of in vitro experiments investigating the LAIR1 signalling cascade. FINDINGS Kenyan children with SMA had elevated circulating levels of soluble LAIR1 (sLAIR1) relative to non-SMA (1.69-fold P < .0001). The LAIR1 antagonist, sLAIR2, was also elevated in the circulation of children with SMA (1.59 fold-change, P < .0001). There was a positive correlation between sLAIR1 and sLAIR2 (ρ = 0.741, P < .0001). Conversely, circulating levels of complement component 1q (C1q), a LAIR1 natural ligand, were lower in SMA (-1.21-fold P = .048). These in vivo findings suggest that reduced membrane-bound LAIR1 expression in SMA is associated with elevated production of sLAIR1, sLAIR2 (antagonist), and limited C1q (agonist) availability. Since reduced LAIR1 transcripts in SMA were associated with increased acquisition of haemozoin (PfHz) by monocytes (P = .028), we explored the relationship between acquisition of intraleukocytic PfHz, LAIR1 expression, and subsequent impacts on leukocyte signalling in cultured PBMCs from malaria-naïve donors stimulated with physiological concentrations of PfHz (10 μg/mL). Phagocytosis of PfHz reduced LAIR1 transcript and protein expression in a time-dependent manner (P < .050), and inhibited LAIR1 signalling through decreased phosphorylation of LAIR1 (P < .0001) and SH2-domain containing phosphatase-1 (SHP-1) (P < .001). This process was associated with NF-κB activation (P < .0001) and enhanced production of IL-6, IL-1β, and TNF-α (all P < .0001). INTERPRETATION Collectively, these findings demonstrate that SMA is characterized by reduced LAIR1 transmembrane expression, reduced C1q, and enhanced production of sLAIR1 and sLAIR2, molecular events which can promote enhanced production of cytokines that contribute to the pathogenesis of SMA. These investigations are important for discovering immune checkpoints that could be future targets of immunotherapy to improve disease outcomes.
Collapse
Affiliation(s)
- Angela O Achieng
- University of New Mexico-Kenya Global Health Programs, Kisumu and Siaya, Kenya; Department of Biomedical Sciences and Technology, School of Public Health and Community Development, Maseno University, Maseno, Kenya
| | - Bernard Guyah
- Department of Biomedical Sciences and Technology, School of Public Health and Community Development, Maseno University, Maseno, Kenya
| | - Qiuying Cheng
- University of New Mexico, Center for Global Health, Department of Internal Medicine, NM, USA
| | - John M Ong'echa
- Kenya Medical Research Institute, Centre for Global Health Research, Kisumu, Kenya
| | - Collins Ouma
- University of New Mexico-Kenya Global Health Programs, Kisumu and Siaya, Kenya; Department of Biomedical Sciences and Technology, School of Public Health and Community Development, Maseno University, Maseno, Kenya
| | - Christophe G Lambert
- University of New Mexico, Center for Global Health, Department of Internal Medicine, NM, USA
| | - Douglas J Perkins
- University of New Mexico-Kenya Global Health Programs, Kisumu and Siaya, Kenya; University of New Mexico, Center for Global Health, Department of Internal Medicine, NM, USA.
| |
Collapse
|
31
|
Lambertsen KL, Finsen B, Clausen BH. Post-stroke inflammation-target or tool for therapy? Acta Neuropathol 2019; 137:693-714. [PMID: 30483945 PMCID: PMC6482288 DOI: 10.1007/s00401-018-1930-z] [Citation(s) in RCA: 254] [Impact Index Per Article: 50.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 11/03/2018] [Accepted: 11/04/2018] [Indexed: 12/22/2022]
Abstract
Inflammation is currently considered a prime target for the development of new stroke therapies. In the acute phase of ischemic stroke, microglia are activated and then circulating immune cells invade the peri-infarct and infarct core. Resident and infiltrating cells together orchestrate the post-stroke inflammatory response, communicating with each other and the ischemic neurons, through soluble and membrane-bound signaling molecules, including cytokines. Inflammation can be both detrimental and beneficial at particular stages after a stroke. While it can contribute to expansion of the infarct, it is also responsible for infarct resolution, and influences remodeling and repair. Several pre-clinical and clinical proof-of-concept studies have suggested the effectiveness of pharmacological interventions that target inflammation post-stroke. Experimental evidence shows that targeting certain inflammatory cytokines, such as tumor necrosis factor, interleukin (IL)-1, IL-6, and IL-10, holds promise. However, as these cytokines possess non-redundant protective and immunoregulatory functions, their neutralization or augmentation carries a risk of unwanted side effects, and clinical translation is, therefore, challenging. This review summarizes the cell biology of the post-stroke inflammatory response and discusses pharmacological interventions targeting inflammation in the acute phase after a stroke that may be used alone or in combination with recanalization therapies. Development of next-generation immune therapies should ideally aim at selectively neutralizing pathogenic immune signaling, enhancing tissue preservation, promoting neurological recovery and leaving normal function intact.
Collapse
Affiliation(s)
- Kate Lykke Lambertsen
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, 5000, Odense, Denmark.
- Department of Clinical Research, BRIDGE-Brain Research-Inter-Disciplinary Guided Excellence, University of Southern Denmark, 5000, Odense C, Denmark.
- Department of Neurology, Odense University Hospital, 5000, Odense, Denmark.
| | - Bente Finsen
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, 5000, Odense, Denmark
- Department of Clinical Research, BRIDGE-Brain Research-Inter-Disciplinary Guided Excellence, University of Southern Denmark, 5000, Odense C, Denmark
| | - Bettina Hjelm Clausen
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, 5000, Odense, Denmark
- Department of Clinical Research, BRIDGE-Brain Research-Inter-Disciplinary Guided Excellence, University of Southern Denmark, 5000, Odense C, Denmark
| |
Collapse
|
32
|
Zhuo D, Wu Y, Luo J, Deng L, Niu X. CSTP1 inhibits IL-6 expression through targeting Akt/FoxO3a signaling pathway in bladder cancer cells. Exp Cell Res 2019; 380:80-89. [PMID: 31002815 DOI: 10.1016/j.yexcr.2019.04.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 04/12/2019] [Accepted: 04/15/2019] [Indexed: 10/27/2022]
Abstract
CSTP1, a recently identified protein phosphotase, is frequently repressed in bladder cancers. Previous results showed that CSTP1 over-expression inhibited cell cycle progression and promoted apoptosis through dephosphorylating Akt kinase at Ser473 site in bladder cancer cells, but the mechanisms how CSTP1 exerted tumor suppressive activity remains unclear. In this study, we analyzed the gene expression profile changes that affected by CSTP1 overexpression by microarray, and reported that CSTP1 decreased IL-6 expression/secretion in bladder cancer cells and re-expression of IL-6 abrogated CSTP1's tumor suppressive activity. We also found that FoxO3a occupy IL-6 gene promoter and repressed IL mRNA transcription. Further results showed that decreased expression of IL-6 in CSTP1-overexpressing cells inactivated Stat3 transcriptional factor, which resulted in the down-regulation of cyclin D1, Bcl-xl expression. Spearman correlation analysis revealed that the mRNA level of CSTP1 correlated inversely with that of IL-6 in bladder cancer tissues. In conclusion, our studies revealed that protein phosphotase CSTP1 inhibited IL-6 expression through targeting Akt/FoxO3a signaling pathway and IL-6 inactivated Stat3 was necessary for CSTP1's tumor suppressive function.
Collapse
Affiliation(s)
- Dexiang Zhuo
- The Central Laboratory of Sanming First Hospital Affiliated to Fujian Medical University, Sanming City, 365000, China
| | - Yongyang Wu
- The Central Laboratory of Sanming First Hospital Affiliated to Fujian Medical University, Sanming City, 365000, China
| | - Jia Luo
- The Central Laboratory of Sanming First Hospital Affiliated to Fujian Medical University, Sanming City, 365000, China
| | - Ling Deng
- Department of Clinical Medical Oncology, Qingyuan People's Hospital, The Six Affiliated Hosptial of Guangzhou Medical University, Qingyuan City, 511518, China
| | - Xiaohua Niu
- Department of Gastrointestinal Surgery, Qingyuan People's Hospital, The Six Affiliated Hosptial of Guangzhou Medical University, Qingyuan City, 511518, China.
| |
Collapse
|
33
|
Weng YS, Tseng HY, Chen YA, Shen PC, Al Haq AT, Chen LM, Tung YC, Hsu HL. MCT-1/miR-34a/IL-6/IL-6R signaling axis promotes EMT progression, cancer stemness and M2 macrophage polarization in triple-negative breast cancer. Mol Cancer 2019; 18:42. [PMID: 30885232 PMCID: PMC6421700 DOI: 10.1186/s12943-019-0988-0] [Citation(s) in RCA: 240] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 02/26/2019] [Indexed: 02/07/2023] Open
Abstract
Background Triple-negative breast cancer (TNBC) is a poor prognostic breast cancer with the highest mutations and limited therapeutic choices. Cytokine networking between cancer cells and the tumor microenvironment (TME) maintains the self-renewing subpopulation of breast cancer stem cells (BCSCs) that mediate tumor heterogeneity, resistance and recurrence. Immunotherapy of those factors combined with targeted therapy or chemoagents may advantage TNBC treatment. Results We found that the oncogene Multiple Copies in T-cell Malignancy 1 (MCT-1/MCTS1) expression is a new poor-prognosis marker in patients with aggressive breast cancers. Overexpressing MCT-1 perturbed the oncogenic breast epithelial acini morphogenesis and stimulated epithelial-mesenchymal transition and matrix metalloproteinase activation in invasive TNBC cells, which were repressed after MCT-1 gene silencing. As mammary tumor progression was promoted by oncogenic MCT-1 activation, tumor-promoting M2 macrophages were enriched in TME, whereas M2 macrophages were decreased and tumor-suppressive M1 macrophages were increased as the tumor was repressed via MCT-1 knockdown. MCT-1 stimulated interleukin-6 (IL-6) secretion that promoted monocytic THP-1 polarization into M2-like macrophages to increase TNBC cell invasiveness. In addition, MCT-1 elevated the soluble IL-6 receptor levels, and thus, IL-6R antibodies antagonized the effect of MCT-1 on promoting M2-like polarization and cancer cell invasion. Notably, MCT-1 increased the features of BCSCs, which were further advanced by IL-6 but prevented by tocilizumab, a humanized IL-6R antibody, thus MCT-1 knockdown and tocilizumab synergistically inhibited TNBC stemness. Tumor suppressor miR-34a was induced upon MCT-1 knockdown that inhibited IL-6R expression and activated M1 polarization. Conclusions The MCT-1 pathway is a novel and promising therapeutic target for TNBC. Electronic supplementary material The online version of this article (10.1186/s12943-019-0988-0) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Yueh-Shan Weng
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli County, 35053, Taiwan
| | - Hong-Yu Tseng
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli County, 35053, Taiwan
| | - Yen-An Chen
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli County, 35053, Taiwan
| | - Pei-Chun Shen
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli County, 35053, Taiwan
| | - Aushia Tanzih Al Haq
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli County, 35053, Taiwan
| | - Li-Mei Chen
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli County, 35053, Taiwan
| | - Yi-Chung Tung
- Research Center for Applied Sciences, Academia Sinica, Taipei, Taiwan
| | - Hsin-Ling Hsu
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli County, 35053, Taiwan.
| |
Collapse
|
34
|
Wang X, Guo Y, Wen C, Lv M, Gan N, Zhou H, Zhang A, Yang K. Molecular characterization of grass carp interleukin-6 receptor and the agonistic activity of its soluble form in head kidney leucocytes. FISH & SHELLFISH IMMUNOLOGY 2019; 86:1072-1080. [PMID: 30576778 DOI: 10.1016/j.fsi.2018.12.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 12/11/2018] [Accepted: 12/16/2018] [Indexed: 06/09/2023]
Abstract
Interleukin (IL)-6 receptor (IL-6R) can specifically bind to IL-6 and the complex subsequently recruits a transmembrane signal transducer, gp130, to trigger the intracellular signal transduction. IL-6R exists in two forms, a transmembrane IL-6R and a soluble IL-6R (sIL-6R), leading to different signal transduction mechanisms as classic signaling and trans-signaling, respectively. There is now a general consensus that these two modes of signal transduction can mediate anti-inflammatory and pro-inflammatory activities of IL-6. The study on Il-6r is limited although Il-6 has been well studied in teleost. In the present study, a cDNA encoding grass carp Il-6r (gcIl-6r) was isolated. An in-silico analysis showed that gcIl-6r shared the same functional domains and conserved gene synteny at its loci with mouse homologue, and its amino acid sequence was conserved in fish species. A tissue distribution assay demonstrated that gcil6r mRNA was expressed with high levels in immune tissues including spleen and head kidney, and its expression was induced by LPS and Poly I:C in grass carp head kidney leucocytes (HKLs). An in vitro binding assay showed that recombinant soluble gcIl-6r (rgcsIl-6r) could specifically bind to recombinant gcIl-6 (rgcIl-6) protein. Moreover, rgcIl-6 stimulated suppressor of cytokine signaling 3 (socs3)'s mRNA expression in grass carp HKLs and it combined with rgcsIl-6r increased socs3 mRNA expression in CIK cells with gp130 but without Il-6r expression. In HKLs, rgcIl-6 stimulated the mRNA levels of both pro-inflammatory (tnfa and il1b) and anti-inflammatory (il10) cytokines, and rgcsIl-6r could augment these stimulatory effects of gcIl-6. Taken these data together, gcsIl-6r can mediate the immuno-regulatory functions of gcIl-6 and has an agonistic property in these actions of Il-6 in grass carp.
Collapse
Affiliation(s)
- Xinyan Wang
- Center for Informational Biology, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, PR China.
| | - Yafei Guo
- Center for Informational Biology, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, PR China
| | - Chao Wen
- Center for Informational Biology, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, PR China
| | - Mengyuan Lv
- Center for Informational Biology, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, PR China
| | - Ning Gan
- Center for Informational Biology, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, PR China
| | - Hong Zhou
- Center for Informational Biology, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, PR China
| | - Anying Zhang
- Center for Informational Biology, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, PR China
| | - Kun Yang
- Center for Informational Biology, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, PR China
| |
Collapse
|
35
|
Gary MA, Tanner EA, Davis AA, McFarlin BK. Combined bead-based multiplex detection of RNA and protein biomarkers: Implications for understanding the time course of skeletal muscle injury and repair. Methods 2018; 158:92-96. [PMID: 30472250 DOI: 10.1016/j.ymeth.2018.11.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 11/15/2018] [Accepted: 11/21/2018] [Indexed: 01/14/2023] Open
Abstract
Biological response to skeletal muscle injury time course is generally classified as initial (elevated within first 4-h), delayed (elevated at 24-h), and/or prolonged (elevated at 4-h and sustained to 24-h). Accurate description of this process requires the ability to measure a robust set of RNA and protein biomarkers, yet such an approach is not common and not always feasible. This method proposes a novel experimental approach that focuses on the use of bead-based multiplex detection to measure mRNA, lncRNA, cytokines, soluble cytokine receptors, and myokines at 4-h and 24-h post muscle injury. We used an extreme aerobic exercise session (half-marathon race) to create a consistent muscle injury stimulus via oxidative stress and eccentric contractions. Venous blood samples were analyzed to determine the change in 90 targets. Specifically, we identified 14 mRNA, 2 lncRNA, 4 cytokines, and 5 myokines that had only an initial response (change at 4-h). We identified 2 mRNA, 2 cytokines, 13 soluble cytokine receptors, and 1 myokine that had only a delayed response (change at 24-h). Finally, we identified 18 mRNA, 4 lncRNA, 6 myokines and 15 cytokines that had a prolonged response (change at 4-h and sustained at 24-h). We found 4 targets to be undetectable or having no response relative to muscle injury recovery. These findings demonstrate the interplay between RNA and protein biomarkers in response to skeletal muscle injury. This novel experimental application of bead-based multiplexing is applicable to a variety of clinical models that involve muscle injury and/or wasting.
Collapse
Affiliation(s)
- Melody A Gary
- Applied Physiology Laboratory, University of North Texas, Denton, TX, USA; Department of Biological Sciences, University of North Texas, Denton, TX, USA
| | - Elizabeth A Tanner
- Applied Physiology Laboratory, University of North Texas, Denton, TX, USA; Department of Biological Sciences, University of North Texas, Denton, TX, USA
| | - Asheal A Davis
- Applied Physiology Laboratory, University of North Texas, Denton, TX, USA
| | - Brian K McFarlin
- Applied Physiology Laboratory, University of North Texas, Denton, TX, USA; Department of Biological Sciences, University of North Texas, Denton, TX, USA.
| |
Collapse
|
36
|
Zegeye MM, Lindkvist M, Fälker K, Kumawat AK, Paramel G, Grenegård M, Sirsjö A, Ljungberg LU. Activation of the JAK/STAT3 and PI3K/AKT pathways are crucial for IL-6 trans-signaling-mediated pro-inflammatory response in human vascular endothelial cells. Cell Commun Signal 2018; 16:55. [PMID: 30185178 PMCID: PMC6125866 DOI: 10.1186/s12964-018-0268-4] [Citation(s) in RCA: 183] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 08/27/2018] [Indexed: 01/05/2023] Open
Abstract
Background IL-6 classic signaling is linked to anti-inflammatory functions while the trans-signaling is associated with pro-inflammatory responses. Classic signaling is induced via membrane-bound IL-6 receptor (IL-6R) whereas trans-signaling requires prior binding of IL-6 to the soluble IL-6R. In both cases, association with the signal transducing gp130 receptor is compulsory. However, differences in the downstream signaling mechanisms of IL-6 classic- versus trans-signaling remains largely elusive. Methods In this study, we used flow cytometry, quantitative PCR, ELISA and immuno-blotting techniques to investigate IL-6 classic and trans-signaling mechanisms in Human Umbilical Vein Endothelial Cells (HUVECs). Results We show that both IL-6R and gp130 are expressed on the surface of human vascular endothelial cells, and that the expression is affected by pro-inflammatory stimuli. In contrast to IL-6 classic signaling, IL-6 trans-signaling induces the release of the pro-inflammatory chemokine Monocyte Chemoattractant Protein-1 (MCP-1) from human vascular endothelial cells. In addition, we reveal that the classic signaling induces activation of the JAK/STAT3 pathway while trans-signaling also activates the PI3K/AKT and the MEK/ERK pathways. Furthermore, we demonstrate that MCP-1 induction by IL-6 trans-signaling requires simultaneous activation of the JAK/STAT3 and PI3K/AKT pathways. Conclusions Collectively, our study reports molecular differences in IL-6 classic- and trans-signaling in human vascular endothelial cells; and elucidates the pathways which mediate MCP-1 induction by IL-6 trans-signaling. Electronic supplementary material The online version of this article (10.1186/s12964-018-0268-4) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Mulugeta M Zegeye
- Cardiovascular Research Center, School of Medical Sciences, Örebro University Södra Grev Rosengatan 32, 703 62, Örebro, Sweden.
| | - Madelene Lindkvist
- Cardiovascular Research Center, School of Medical Sciences, Örebro University Södra Grev Rosengatan 32, 703 62, Örebro, Sweden
| | - Knut Fälker
- Cardiovascular Research Center, School of Medical Sciences, Örebro University Södra Grev Rosengatan 32, 703 62, Örebro, Sweden
| | - Ashok K Kumawat
- Cardiovascular Research Center, School of Medical Sciences, Örebro University Södra Grev Rosengatan 32, 703 62, Örebro, Sweden
| | - Geena Paramel
- Cardiovascular Research Center, School of Medical Sciences, Örebro University Södra Grev Rosengatan 32, 703 62, Örebro, Sweden.,Present address: Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, NB, E2L 4L5, Canada
| | - Magnus Grenegård
- Cardiovascular Research Center, School of Medical Sciences, Örebro University Södra Grev Rosengatan 32, 703 62, Örebro, Sweden
| | - Allan Sirsjö
- Cardiovascular Research Center, School of Medical Sciences, Örebro University Södra Grev Rosengatan 32, 703 62, Örebro, Sweden
| | - Liza U Ljungberg
- Cardiovascular Research Center, School of Medical Sciences, Örebro University Södra Grev Rosengatan 32, 703 62, Örebro, Sweden
| |
Collapse
|
37
|
Ramadan AM, Daguindau E, Rech JC, Chinnaswamy K, Zhang J, Hura GL, Griesenauer B, Bolten Z, Robida A, Larsen M, Stuckey JA, Yang CY, Paczesny S. From proteomics to discovery of first-in-class ST2 inhibitors active in vivo. JCI Insight 2018; 3:99208. [PMID: 30046004 DOI: 10.1172/jci.insight.99208] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 06/12/2018] [Indexed: 12/19/2022] Open
Abstract
Soluble cytokine receptors function as decoy receptors to attenuate cytokine-mediated signaling and modulate downstream cellular responses. Dysregulated overproduction of soluble receptors can be pathological, such as soluble ST2 (sST2), a prognostic biomarker in cardiovascular diseases, ulcerative colitis, and graft-versus-host disease (GVHD). Although intervention using an ST2 antibody improves survival in murine GVHD models, sST2 is a challenging target for drug development because it binds to IL-33 via an extensive interaction interface. Here, we report the discovery of small-molecule ST2 inhibitors through a combination of high-throughput screening and computational analysis. After in vitro and in vivo toxicity assessment, 3 compounds were selected for evaluation in 2 experimental GVHD models. We show that the most effective compound, iST2-1, reduces plasma sST2 levels, alleviates disease symptoms, improves survival, and maintains graft-versus-leukemia activity. Our data suggest that iST2-1 warrants further optimization to develop treatment for inflammatory diseases mediated by sST2.
Collapse
Affiliation(s)
- Abdulraouf M Ramadan
- Department of Pediatrics and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Etienne Daguindau
- Department of Pediatrics and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Jason C Rech
- Department of Internal Medicine, Hematology and Oncology Division, University of Michigan, Ann Arbor, Michigan, USA
| | | | - Jilu Zhang
- Department of Pediatrics and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Greg L Hura
- Lawrence Berkeley National Laboratory, Berkeley, California, USA.,Department of Chemistry and Biochemistry, University of California, Santa Cruz, Santa Cruz, California, USA
| | - Brad Griesenauer
- Department of Pediatrics and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Zachary Bolten
- Department of Pediatrics and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Aaron Robida
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan, USA
| | - Martha Larsen
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan, USA
| | - Jeanne A Stuckey
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan, USA.,Department of Biological Chemistry, University of Michigan, Ann Arbor, Michigan, USA
| | - Chao-Yie Yang
- Department of Internal Medicine, Hematology and Oncology Division, University of Michigan, Ann Arbor, Michigan, USA
| | - Sophie Paczesny
- Department of Pediatrics and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| |
Collapse
|
38
|
Andrographolide Ameliorates Atherosclerosis by Suppressing Pro-Inflammation and ROS Generation-Mediated Foam Cell Formation. Inflammation 2018; 41:1681-1689. [DOI: 10.1007/s10753-018-0812-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
|
39
|
Salazar E, Salazar AM, Taylor P, Ibarra C, Rodríguez-Acosta A, Sánchez E, Pérez K, Brito B, Guerrero B. Pro-inflammatory response and hemostatic disorder induced by venom of the coral snake Micrurus tener tener IN C57BL/6 mice. Toxicon 2018; 150:212-219. [PMID: 29890232 DOI: 10.1016/j.toxicon.2018.06.063] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 06/06/2018] [Accepted: 06/07/2018] [Indexed: 12/20/2022]
Abstract
Micrurus venoms are known to induce mainly neurotoxicity in victims. However, other manifestations, including hemorrhage, edema, myotoxicity, complement activation, and hemostatic activity have been reported. In order to develop a more complete pharmacological profile of these venoms, inflammatory responses and hemostasis were evaluated in C57BL/6 mice treated with a sub-lethal dose of M. t. tener (Mtt) venom (8 μg/mouse), inoculated intraperitoneally. The venom induced moderate bleeding into the abdominal cavity and lungs, as well as infiltration of leukocytes into the liver. After 30 min, the release of pro-inflammatory mediators (TNF-α, IL-6, and NO) were observed, being most evident at 4 h. There was a decrease in hemoglobin and hematocrit levels at 72 h, a prolongation in coagulation times (PT and aPTT), a decrease in the fibrinogen concentration and an increase in fibrinolytic activity. In this animal model, it was proposed that Mtt venom induces inflammation with the release of mediators such as TNF-α, in response to the toxins. These mediators may activate hemostatic mechanisms, producing systemic fibrinolysis and hemorrhage. These findings suggest alternative treatments in Micrurus envenomations in which neurotoxic manifestations do not predominate.
Collapse
Affiliation(s)
- Emelyn Salazar
- Laboratorio de Fisiopatología, Centro de Medicina Experimental, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Ana Maria Salazar
- Laboratorio de Fisiopatología, Centro de Medicina Experimental, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Peter Taylor
- Laboratorio de Patología Celular y Molecular, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Carlos Ibarra
- Laboratorio de Fisiopatología, Centro de Medicina Experimental, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Alexis Rodríguez-Acosta
- Laboratorio de Inmunoquímica y Ultraestructura, Instituto Anatómico de la Universidad Central de Venezuela, Caracas, Venezuela
| | - Elda Sánchez
- National Natural Toxins Research Center (NNTRC), Texas A&M University-Kingsville, MSC 158, Kingsville, TX 78363, USA
| | - Karin Pérez
- Laboratorio de Fisiopatología, Centro de Medicina Experimental, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Beatriz Brito
- Laboratorio de Patología Celular y Molecular, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Belsy Guerrero
- Laboratorio de Fisiopatología, Centro de Medicina Experimental, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela.
| |
Collapse
|
40
|
Abstract
The interleukin (IL)-6 family cytokines is a group of cytokines consisting of IL-6, IL-11, ciliary neurotrophic factor (CNTF), leukemia inhibitory factor (LIF), oncostatin M (OSM), cardiotrophin 1 (CT-1), cardiotrophin-like cytokine (CLC), and IL-27. They are grouped into one family because the receptor complex of each cytokine contains two (IL-6 and IL-11) or one molecule (all others cytokines) of the signaling receptor subunit gp130. IL-6 family cytokines have overlapping but also distinct biologic activities and are involved among others in the regulation of the hepatic acute phase reaction, in B-cell stimulation, in the regulation of the balance between regulatory and effector T cells, in metabolic regulation, and in many neural functions. Blockade of IL-6 family cytokines has been shown to be beneficial in autoimmune diseases, but bacterial infections and metabolic side effects have been observed. Recent advances in cytokine blockade might help to minimize such side effects during therapeutic blockade.
Collapse
Affiliation(s)
- Stefan Rose-John
- Institute of Biochemistry, Kiel University, Olshausenstrasse 40, Kiel, Germany
| |
Collapse
|
41
|
Appenheimer MM, Evans SS. Temperature and adaptive immunity. HANDBOOK OF CLINICAL NEUROLOGY 2018; 156:397-415. [DOI: 10.1016/b978-0-444-63912-7.00024-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
|
42
|
Vargas N, Marino F. Neuroinflammation, cortical activity, and fatiguing behaviour during self-paced exercise. Pflugers Arch 2017; 470:413-426. [PMID: 29159538 DOI: 10.1007/s00424-017-2086-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 10/29/2017] [Accepted: 10/31/2017] [Indexed: 01/06/2023]
Abstract
The present study aimed to identify whether or not the release of interleukin (IL)-6 and soluble (s) IL-6 receptor (R) is associated with fatiguing behaviour and changes in cortical activity during self-paced exercise. Relationships between the IL-6 and its soluble receptors, total work, reductions in power output, and changes in slow, alpha (α) and fast, beta (β) brain waves during self-paced exercise were evaluated. Different intensities and environments were used to manipulate the release of IL-6, whereby seven active males cycled for 60 min in heat stress (HS) or thermoneutral (TN) environments at a clamped rating of perceived exertion (RPE) equating to low intensity (RPE = 12) or high intensity (RPE = 16). IL-6 and sIL-6R were positively associated with total work, but not with reductions in power output. There was greater α activity in high-intensity conditions, which was associated with the reduction in power output. Both high-intensity conditions appeared to have greater β activity, and there was a positive correlation between β activity and total work and β activity and sIL-6R. We conclude that IL-6 and sIL-6R may contribute to perturbations in cortical activity and are associated with total work output, but reductions in power output are likely influenced greater by other internal and external factors.
Collapse
Affiliation(s)
- Nicole Vargas
- University at Buffalo, 214 Kimball Tower, Buffalo, NY, 14215, USA.
| | - Frank Marino
- Charles Sturt University, Bathurst, NSW, 2795, Australia
| |
Collapse
|
43
|
Grønhøj MH, Clausen BH, Fenger CD, Lambertsen KL, Finsen B. Beneficial potential of intravenously administered IL-6 in improving outcome after murine experimental stroke. Brain Behav Immun 2017; 65:296-311. [PMID: 28587928 DOI: 10.1016/j.bbi.2017.05.019] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 05/18/2017] [Accepted: 05/30/2017] [Indexed: 01/18/2023] Open
Abstract
Interleukin-6 (IL-6) is a pleiotropic cytokine with neuroprotective properties. Still, the therapeutic potential of IL-6 after experimental stroke has not yet been investigated in a clinically relevant way. Here, we investigated the therapeutic use of intravenously administered IL-6 and the soluble IL-6 receptor (sIL-6R) alone or in combination, early after permanent middle cerebral artery occlusion (pMCAo) in mice. IL-6 did not affect the infarct volume in C57BL/6 mice, at neither 24 nor 72h after pMCAo but reduced the infarct volume in IL-6 knockout mice at 24h after pMCAo. Assessment of post-stroke behavior showed an improved grip strength after a single IL-6 injection and also improved rotarod endurance after two injections, in C57BL/6 mice at 24h. An improved grip strength and a better preservation of sensory functions was also observed in IL-6 treated IL-6 knockout mice 24h after pMCAo. Co-administration of IL-6 and sIL-6R increased the infarct volume, the number of infiltrating polymorphonuclear leukocytes and impaired the rotarod endurance of C57BL/6 mice 24h after pMCAo. IL-6 administration to naïve C57BL/6 mice lead after 45min to increased plasma-levels of CXCL1 and IL-10, whereas IL-6 administration to C57BL/6 mice lead to a reduction in the ischemia-induced increase in IL-6 and CXCL1 at both mRNA and protein level in brain, and of IL-6 and CXCL1 in serum. We also investigated the expression of IL-6 and IL-6R after pMCAo and found that cortical neurons upregulated IL-6 mRNA and protein, and upregulated IL-6R after pMCAo. In conclusion, the results show a complex but potentially beneficial effect of intravenously administered IL-6 in experimental stroke.
Collapse
Affiliation(s)
- Mads Hjortdal Grønhøj
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, Denmark; Department of Neurosurgery, Odense University Hospital, Denmark
| | - Bettina Hjelm Clausen
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, Denmark
| | - Christina Dühring Fenger
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, Denmark
| | - Kate Lykke Lambertsen
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, Denmark; Department of Neurology, Odense University Hospital, Denmark; BRIDGE - Brain Research - Inter-Disciplinary Guided Excellence, Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Bente Finsen
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, Denmark; BRIDGE - Brain Research - Inter-Disciplinary Guided Excellence, Department of Clinical Research, University of Southern Denmark, Odense, Denmark.
| |
Collapse
|
44
|
Saldías MP, Fernández C, Morgan A, Díaz C, Morales D, Jaña F, Gómez A, Silva A, Briceño F, Oyarzún A, Maldonado F, Cerda O, Smith PC, Cáceres M. Aged blood factors decrease cellular responses associated with delayed gingival wound repair. PLoS One 2017; 12:e0184189. [PMID: 28898261 PMCID: PMC5595322 DOI: 10.1371/journal.pone.0184189] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 08/18/2017] [Indexed: 12/20/2022] Open
Abstract
Aging is a gradual biological process characterized by a decrease in cell and organism functions. Gingival wound healing is one of the impaired processes found in old rats. Here, we studied the in vivo wound healing process using a gingival repair rat model and an in vitro model using human gingival fibroblast for cellular responses associated to wound healing. To do that, we evaluated cell proliferation of both epithelial and connective tissue cells in gingival wounds and found decreased of Ki67 nuclear staining in old rats when compared to their young counterparts. We next evaluated cellular responses of primary gingival fibroblast obtained from young subjects in the presence human blood serum of individuals of different ages. Eighteen to sixty five years old masculine donors were classified into 3 groups: “young” from 18 to 22 years old, “middle-aged” from 30 to 48 years old and “aged” over 50 years old. Cell proliferation, measured through immunofluorescence for Ki67 and flow cytometry for DNA content, was decreased when middle-aged and aged serum was added to gingival fibroblast compared to young serum. Myofibroblastic differentiation, measured through alpha-smooth muscle actin (α-SMA), was stimulated with young but not middle-aged or aged serum both the protein levels and incorporation of α-SMA into actin stress fibers. High levels of PDGF, VEGF, IL-6R were detected in blood serum from young subjects when compared to middle-aged and aged donors. In addition, the pro-inflammatory cytokines MCP-1 and TNF were increased in the serum of aged donors. In old rat wound there is an increased of staining for TNF compared to young wound. Moreover, healthy gingiva (non injury) shows less staining compared to a wound site, suggesting a role in wound healing. Moreover, serum from middle-aged and aged donors was able to stimulate cellular senescence in young cells as determined by the expression of senescence associated beta-galactosidase and histone H2A.X phosphorylated at Ser139. Moreover, we detected an increased frequency of γ-H2A.X-positive cells in aged rat gingival tissues. The present study suggests that serum factors present in middle-aged and aged individuals may be responsible, at least in part, for the altered responses observed during wound healing in aging.
Collapse
Affiliation(s)
- María Paz Saldías
- Program of Molecular and Cell Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Christian Fernández
- Program of Molecular and Cell Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Alejandra Morgan
- Program of Molecular and Cell Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Catalina Díaz
- Program of Molecular and Cell Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Diego Morales
- Program of Molecular and Cell Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | | | - Alvaro Gómez
- Program of Molecular and Cell Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Alonso Silva
- Program of Molecular and Cell Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Fernanda Briceño
- Program of Molecular and Cell Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | | | - Felipe Maldonado
- Department of Anesthesia, Faculty of Medicine, Hospital Clínico de la Universidad de Chile, Santiago, Chile
| | - Oscar Cerda
- Program of Molecular and Cell Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Millennium Nucleus of Ion Channels-Associated Diseases (MiNICAD), Santiago, Chile
| | - Patricio C. Smith
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Mónica Cáceres
- Program of Molecular and Cell Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Millennium Nucleus of Ion Channels-Associated Diseases (MiNICAD), Santiago, Chile
- * E-mail:
| |
Collapse
|
45
|
Basu A, Das AS, Sharma M, Pathak MP, Chattopadhyay P, Biswas K, Mukhopadhyay R. STAT3 and NF-κB are common targets for kaempferol-mediated attenuation of COX-2 expression in IL-6-induced macrophages and carrageenan-induced mouse paw edema. Biochem Biophys Rep 2017; 12:54-61. [PMID: 28955792 PMCID: PMC5613220 DOI: 10.1016/j.bbrep.2017.08.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 07/25/2017] [Accepted: 08/14/2017] [Indexed: 01/16/2023] Open
Abstract
Cycloxygenase-2 (COX-2) is the inducible isoform of cycloxygenase enzyme family that catalyzes synthesis of inflammatory mediators, prostanoids and prostaglandins, and therefore, can be targeted by anti-inflammatory drugs. Here, we showed a plant polyphenol, kaempferol, attenuated IL-6-induced COX-2 expression in human monocytic THP-1 cells suggesting its beneficial role in chronic inflammation. Kaempferol deactivated and prevented nuclear localization of two major transcription factors STAT3 and NF-κB, mutually responsible for COX-2 induction in response to IL-6. Moreover, STAT3 and NF-κB were simultaneously deactivated by kaempferol in acute inflammation, as shown by carrageenan-induced mouse paw edema model. The concomitant reduction in COX-2 expression in paw tissues suggested kaempferol’s role in mitigation of inflammation by targeting STAT3 and NF-κB. IL-6-induced COX-2 expression was attenuated by kaempferol in macrophages. The attenuation is attributed to simultaneous deactivation of STAT3 and NF-κB. The nuclear translocation of both transcription factors are prevented by kaempferol treatment. Kaempferol targets STAT3 and NF-κB and inhibits COX-2 expression to reduce carrageenan-induced mouse paw edema.
Collapse
Affiliation(s)
- Anandita Basu
- Cellular, Molecular and Environmental Biotechnology Laboratory, Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, Assam, India
| | - Anindhya Sundar Das
- Cellular, Molecular and Environmental Biotechnology Laboratory, Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, Assam, India
| | - Manoj Sharma
- Cellular, Molecular and Environmental Biotechnology Laboratory, Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, Assam, India
| | - Manash Pratim Pathak
- Division of Pharmaceutical Technology, Defense Research Laboratory, Tezpur 784001, Assam, India
| | - Pronobesh Chattopadhyay
- Division of Pharmaceutical Technology, Defense Research Laboratory, Tezpur 784001, Assam, India
| | - Kaushik Biswas
- Division of Molecular Medicine, Bose Institute, Kolkata 700054, India
| | - Rupak Mukhopadhyay
- Cellular, Molecular and Environmental Biotechnology Laboratory, Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, Assam, India
| |
Collapse
|
46
|
Heilingloh CS, Klingl S, Egerer-Sieber C, Schmid B, Weiler S, Mühl-Zürbes P, Hofmann J, Stump JD, Sticht H, Kummer M, Steinkasserer A, Muller YA. Crystal Structure of the Extracellular Domain of the Human Dendritic Cell Surface Marker CD83. J Mol Biol 2017; 429:1227-1243. [PMID: 28315353 DOI: 10.1016/j.jmb.2017.03.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Revised: 02/10/2017] [Accepted: 03/05/2017] [Indexed: 11/27/2022]
Abstract
CD83 is a type-I membrane protein and an efficient marker for identifying mature dendritic cells. Whereas membrane-bound, full-length CD83 co-stimulates the immune system, a soluble variant (sCD83), consisting of the extracellular domain only, displays strong immune-suppressive activities. Besides a prediction that sCD83 adopts a V-set Ig-like fold, however, little is known about the molecular architecture of CD83 and the mechanism by which CD83 exerts its function on dendritic cells and additional immune cells. Here, we report the crystal structure of human sCD83 up to a resolution of 1.7Å solved in three different crystal forms. Interestingly, β-strands C', C″, and D that are typical for V-set Ig-domains could not be traced in sCD83. Mass spectrometry analyses, limited proteolysis experiments, and bioinformatics studies show that the corresponding segment displays enhanced main-chain accessibility, extraordinary low sequence conservation, and a predicted high disorder propensity. Chimeric proteins with amino acid swaps in this segment show unaltered immune-suppressive activities in a TNF-α assay when compared to wild-type sCD83. This strongly indicates that this segment does not participate in the biological activity of CD83. The crystal structure of CD83 shows the recurrent formation of dimers and trimers in the various crystal forms and reveals strong structural similarities between sCD83 and B7 family members and CD48, a signaling lymphocyte activation molecule family member. This suggests that CD83 exerts its immunological activity by mixed homotypic and heterotypic interactions as typically observed for proteins present in the immunological synapse.
Collapse
Affiliation(s)
- Christiane S Heilingloh
- Department of Immune Modulation, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, Hartmannstr. 14, D-91052 Erlangen, Germany
| | - Stefan Klingl
- Division of Biotechnology, Department of Biology, Friedrich-Alexander-University Erlangen-Nürnberg, Henkestr. 91, D-91052 Erlangen, Germany
| | - Claudia Egerer-Sieber
- Division of Biotechnology, Department of Biology, Friedrich-Alexander-University Erlangen-Nürnberg, Henkestr. 91, D-91052 Erlangen, Germany
| | - Benedikt Schmid
- Division of Biotechnology, Department of Biology, Friedrich-Alexander-University Erlangen-Nürnberg, Henkestr. 91, D-91052 Erlangen, Germany
| | - Sigrid Weiler
- Division of Biotechnology, Department of Biology, Friedrich-Alexander-University Erlangen-Nürnberg, Henkestr. 91, D-91052 Erlangen, Germany
| | - Petra Mühl-Zürbes
- Department of Immune Modulation, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, Hartmannstr. 14, D-91052 Erlangen, Germany
| | - Jörg Hofmann
- Division of Biochemistry, Department of Biology, Friedrich-Alexander-University Erlangen-Nürnberg, Staudtstr. 5, D-91058 Erlangen, Germany
| | - Joachim D Stump
- Division of Bioinformatics, Institute of Biochemistry, Friedrich-Alexander-University Erlangen-Nürnberg, Fahrstraße 17, D-91054 Erlangen, Germany
| | - Heinrich Sticht
- Division of Bioinformatics, Institute of Biochemistry, Friedrich-Alexander-University Erlangen-Nürnberg, Fahrstraße 17, D-91054 Erlangen, Germany
| | - Mirko Kummer
- Department of Immune Modulation, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, Hartmannstr. 14, D-91052 Erlangen, Germany
| | - Alexander Steinkasserer
- Department of Immune Modulation, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, Hartmannstr. 14, D-91052 Erlangen, Germany
| | - Yves A Muller
- Division of Biotechnology, Department of Biology, Friedrich-Alexander-University Erlangen-Nürnberg, Henkestr. 91, D-91052 Erlangen, Germany.
| |
Collapse
|
47
|
Nishikawa Y, Kajiura Y, Lew JH, Kido JI, Nagata T, Naruishi K. Calprotectin Induces IL-6 and MCP-1 Production via Toll-Like Receptor 4 Signaling in Human Gingival Fibroblasts. J Cell Physiol 2017; 232:1862-1871. [PMID: 27925202 DOI: 10.1002/jcp.25724] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 11/29/2016] [Indexed: 11/07/2022]
Abstract
Calprotectin, a heterodimer of S100A8 and S100A9 molecules, is associated with inflammatory diseases such as inflammatory bowel disease. We have reported that calprotectin levels in gingival crevicular fluids of periodontitis patients are significantly higher than in healthy subjects. However, the functions of calprotectin in pathophysiology of periodontitis are still unknown. The aim of this study is to investigate the effects of calprotectin on the productivity of inflammatory cytokines in human gingival fibroblasts (HGFs). The HGFs cell line CRL-2014® (ATCC) were cultured, and total RNAs were collected to examine the expression of TLR2/4 and RAGE mRNA using RT-PCR. After the cells were treated with S100A8, S100A9, and calprotectin, supernatants were collected and the levels of IL-6 and MCP-1 were measured using ELISA methods. To examine the intracellular signals involved in calprotectin-induced cytokine production, several chemical inhibitors were used. Furthermore, after the siRNA-mediated TLR4 down-regulated cells were treated with S100A8, S100A9, and calprotectin, the levels of IL-6 and MCP-1 were also measured. HGFs showed greater expression of TLR4 mRNA, but not TLR2 and RAGE mRNA compared with human oral epithelial cells. Calprotectin increased significantly the production of MCP-1 and IL-6 in HGFs, and the cytokine productions were significantly suppressed in the cells treated with MAPKs, NF-κB, and TLR4 inhibitors. Furthermore, calprotectin-mediated MCP-1 and IL-6 production were significantly suppressed in TLR4 down-regulated cells. Taken together, calprotectin induces IL-6 and MCP-1 production in HGFs via TLR4 signaling that involves MAPK and NF-κB, resulting in the progression of periodontitis. J. Cell. Physiol. 232: 1862-1871, 2017. © 2016 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Yasufumi Nishikawa
- Department of Periodontology and Endodontology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Yukari Kajiura
- Department of Periodontology and Endodontology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Jung Hwan Lew
- Department of Periodontology and Endodontology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Jun-Ichi Kido
- Department of Periodontology and Endodontology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Toshihiko Nagata
- Department of Periodontology and Endodontology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Koji Naruishi
- Department of Periodontology and Endodontology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| |
Collapse
|
48
|
Toth MJ, Matthews DE. Whole-Body Protein Metabolism in Chronic Heart Failure: Relationship to Anabolic and Catabolic Hormones. JPEN J Parenter Enteral Nutr 2017; 30:194-201. [PMID: 16639065 DOI: 10.1177/0148607106030003194] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Patients with chronic heart failure frequently experience profound wasting during the course of the disease, a condition termed cardiac cachexia. Although protein is the primary structural and functional component of most tissues, few studies have examined the effect of heart failure on protein metabolism. Moreover, no study has assessed the relationship of protein turnover to hormonal alterations thought to promote cachexia. Thus, our goal was to determine if whole-body protein metabolism is altered in heart failure patients and to assess the relationship of protein kinetics to circulating levels of anabolic and catabolic hormones. METHODS We measured whole-body protein metabolism using 13C-leucine, body composition, and circulating anabolic and catabolic hormone levels in 10 patients with chronic heart failure and 11 elderly controls. RESULTS No differences in leucine rate of appearance, oxidation, or nonoxidative disposal were noted between heart failure patients and controls. However, in a subgroup of patients characterized by increased resting energy expenditure for their metabolic body size (n = 4; > or = 20% above that predicted from fat-free mass), leucine rate of appearance (mean +/- SE; 146 +/- 6 micromol/min), an index of protein breakdown, tended to be higher compared with patients with normal resting energy expenditure (n = 5; 120 +/- 8 micromol/min) and controls (127 +/- 4 micromol/min; p = .06). Alterations in anabolic/catabolic hormone balance did not explain increased protein breakdown in this subgroup, and no correlations were found between hormone levels and protein breakdown in the heart failure group as a whole. In contrast, increased circulating interleukin-6 soluble receptor (r = 0.829; p < .01) and reduced insulin-like growth factor-I (r =-.751; p < .05) levels were related to greater rates of leucine oxidation in heart failure patients. CONCLUSION Our results demonstrate that, although increased protein turnover is not a generalized feature of heart failure, there is a subgroup of patients characterized by resting hypermetabolism and increased protein breakdown. Moreover, hormonal alterations related to the heart failure syndrome were related to increased protein oxidation.
Collapse
Affiliation(s)
- Michael J Toth
- Department of Medicine, Health Science Research Facility, University of Vermont, Burlington, Vermont 05405, USA.
| | | |
Collapse
|
49
|
Forastiero RR, Martinuzzo ME, de Larrañaga GF. Circulating levels of tissue factor and proinflammatory cytokines in patients with primary antiphospholipid syndrome or leprosy related antiphospholipid antibodies. Lupus 2016; 14:129-36. [PMID: 15751817 DOI: 10.1191/0961203305lu2048oa] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The antiphospholipid syndrome (APS) is characterized by the presence of antiphospholipid antibodies (aPL) in patients with thromboembolic complications. In APS, most aPL are autoantibodies to β2-glycoprotein I and prothrombin, which play a major role in the APS pathogenesis. Nevertheless, antibodies with the same antigen specificity are also found in aPL patients with leprosy, in whom thromboembolic complications are uncommon. The in vivo upregulation of the tissue factor (TF) pathway and the imbalance of cytokines have been proposed as potential mechanisms of thrombosis in the APS. We measured the circulating levels of TF, interleukin 6 (IL-6), IL-6 receptor (sIL-6R), tumor necrosis factor (TNF-a) and interferon g (IFN-g) in 83 patients with autoimmune aPL (42 with and 41 without clinical features of definite primary APS), 48 leprosy patients (33 with aPL) and 48 normal controls. There was a trend (P = 0.06) to higher median sTF in patients with autoimmune aPL (139 pg/mL) compared with leprosy patients (103.5 pg/mL) and controls (123 pg/mL). In addition, the frequency of raised sTF levels (.187 pg/mL) was significantly higher in the group with autoimmune aPL [22.9% (APS 21.4%, non-APS 24.4%)] but not in leprosy (10.4%) compared with controls (4.2%). Elevated levels of IL-6 and TNF-a and a trend to lower IFN-g were found in patients with definite APS. Leprosy patients with aPL, however, had increased TNF-a and IFN-g but normal IL-6 levels. Levels of sIL-6R did not differ between controls and either patients with autoimmune aPL or leprosy. The different cytokine profiles as well as differences in circulating levels of TF might contribute to the high thrombotic risk found in patients with autoimmune aPL but not in leprosy related aPL patients.
Collapse
Affiliation(s)
- R R Forastiero
- Favaloro University, Favaloro Foundation, Buenos Aires, Argentina.
| | | | | |
Collapse
|
50
|
Schmidt-Arras D, Rose-John S. IL-6 pathway in the liver: From physiopathology to therapy. J Hepatol 2016; 64:1403-15. [PMID: 26867490 DOI: 10.1016/j.jhep.2016.02.004] [Citation(s) in RCA: 563] [Impact Index Per Article: 70.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 01/15/2016] [Accepted: 02/03/2016] [Indexed: 02/07/2023]
Abstract
Interleukin 6 (IL-6) is a pleiotropic four-helix-bundle cytokine that exerts multiple functions in the body. In the liver, IL-6 is an important inducer of the acute phase response and infection defense. IL-6 is furthermore crucial for hepatocyte homeostasis and is a potent hepatocyte mitogen. It is not only implicated in liver regeneration, but also in metabolic function of the liver. However, persistent activation of the IL-6 signaling pathway is detrimental to the liver and might ultimately result in the development of liver tumors. On target cells IL-6 can bind to the signal transducing subunit gp130 either in complex with the membrane-bound or with the soluble IL-6 receptor to induce intracellular signaling. In this review we describe how these different pathways are involved in the physiology and pathophyiology of the liver. We furthermore discuss how IL-6 pathways can be selectively inhibited and therapeutically exploited for the treatment of liver pathologies.
Collapse
Affiliation(s)
- Dirk Schmidt-Arras
- Institute of Biochemistry, Christian-Albrechts-University Kiel, Olshausenstrasse 40, Kiel, Germany
| | - Stefan Rose-John
- Institute of Biochemistry, Christian-Albrechts-University Kiel, Olshausenstrasse 40, Kiel, Germany.
| |
Collapse
|