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Jiang P, Zhang C, Wang H, Li P, Du X, Wang Y, Lyukmanova E, Lin C, Wang X. Nicotine Enantioselectively Targets Myeloid Differentiation Protein 2 and Inhibits the Toll-like Receptor 4 Signaling. J Chem Inf Model 2024; 64:5253-5261. [PMID: 38973303 DOI: 10.1021/acs.jcim.4c00591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
Psychoactive substances, including morphine and methamphetamine, have been shown to interact with the classic innate immune receptor Toll-like receptor 4 (TLR4) and its partner protein myeloid differentiation protein 2 (MD2) in a nonenantioselective manner. (-)-Nicotine, the primary alkaloid in tobacco and a key component of highly addictive cigarettes, targets the TLR4/MD2, influencing TLR4 signaling pathways. Existing as two enantiomers, the stereoselective recognition of nicotine by TLR4/MD2 in the context of the innate immune response remains unclear. In this study, we synthesized (+)-nicotine and investigated its effects alongside (-)-nicotine on lipopolysaccharide (LPS)-induced TLR4 signaling. (-)-Nicotine dose-dependently inhibited proinflammatory factors such as tumor necrosis factor α (TNF-α), interleukin 6 (IL-6), and cyclooxygenase-2 (COX-2). In contrast, (+)-nicotine showed no such inhibitory effects. Molecular dynamics simulations revealed that (-)-nicotine exhibited a stronger affinity with the TLR4 coreceptor MD2 than (+)-nicotine. Additionally, in silico simulations revealed that both nicotine enantiomers initially attach to the entrance of the MD2 cavity, creating a metastable state before they fully enter the cavity. In the metastable state, (-)-nicotine established more stable interactions with the surrounding residues at the entrance of the MD2 cavity compared to those of (+)-nicotine. This highlights the crucial role of the MD2 cavity entrance in the chiral recognition of nicotine. These findings provide valuable insights into the distinct interactions between nicotine enantiomers and the TLR4 coreceptor MD2, underscoring the enantioselective effect of nicotine on modulating TLR4 signaling.
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Affiliation(s)
- Pu Jiang
- Laboratory of Chemical Biology, , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Cong Zhang
- Laboratory of Chemical Biology, , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Hongshuang Wang
- Laboratory of Chemical Biology, , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Penghui Li
- Shenzhen Key Laboratory of Marine Biotechnology and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Xiubo Du
- Shenzhen Key Laboratory of Marine Biotechnology and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Yibo Wang
- Laboratory of Chemical Biology, , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Ekaterina Lyukmanova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow 119997, Russia
- Biological Department, Shenzhen MSU-BIT University, Shenzhen 518172, China
| | - Cong Lin
- Laboratory of Chemical Biology, , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Xiaohui Wang
- Laboratory of Chemical Biology, , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, China
- Beijing National Laboratory for Molecular Sciences, Beijing 100190, China
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Xin X, Liu H, Zhang S, Li P, Zhao X, Zhang X, Li S, Wu S, Zhao F, Tan J. S100A8/A9 promotes endometrial fibrosis via regulating RAGE/JAK2/STAT3 signaling pathway. Commun Biol 2024; 7:116. [PMID: 38253716 PMCID: PMC10803310 DOI: 10.1038/s42003-024-05814-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 01/12/2024] [Indexed: 01/24/2024] Open
Abstract
Intrauterine adhesion (IUA) is characterized by endometrial fibrosis. S100A8/A9 plays an important role in inflammation and fibroblast activation. However, the role of S100A8/A9 in IUA remains unclear. In this study, we collect normal and IUA endometrium to verify the expression of S100A8/A9. Human endometrial stromal cells (hEnSCs) are isolated to evaluate fibrosis progression after S100A8/A9 treatment. A porcine IUA model is established by electrocautery injury to confirm the therapeutic effect of menstrual blood-derived stromal cells (MenSCs) on IUA. Our study reveals increased S100A8/A9 expression in IUA endometrium. S100A8/A9 significantly enhances hEnSCs proliferation and upregulates fibrosis-related and inflammation-associated markers. Furthermore, S100A8/A9 induces hEnSCs fibrosis through the RAGE-JAK2-STAT3 pathway. Transplantation of MenSCs in a porcine IUA model notably enhances angiogenesis, mitigates endometrial fibrosis and downregulates S100A8/A9 expression. In summary, S100A8/A9 induces hEnSCs fibrosis via the RAGE-JAK2-STAT3 pathway, and MenSCs exhibit marked effects on endometrial restoration in the porcine IUA model.
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Affiliation(s)
- Xing Xin
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 39 Huaxiang Road, Tiexi District, 110022, Shenyang, China
- Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province, No. 39 Huaxiang Road, Tiexi District, 110022, Shenyang, China
| | - Hao Liu
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang, China
- Key Laboratory of Minimally Invasive Surgical Robot, Liaoning Province, Shenyang, China
| | - Siwen Zhang
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 39 Huaxiang Road, Tiexi District, 110022, Shenyang, China
- Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province, No. 39 Huaxiang Road, Tiexi District, 110022, Shenyang, China
| | - Pingping Li
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 39 Huaxiang Road, Tiexi District, 110022, Shenyang, China
- Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province, No. 39 Huaxiang Road, Tiexi District, 110022, Shenyang, China
| | - Xinyang Zhao
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 39 Huaxiang Road, Tiexi District, 110022, Shenyang, China
- Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province, No. 39 Huaxiang Road, Tiexi District, 110022, Shenyang, China
| | - Xudong Zhang
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 39 Huaxiang Road, Tiexi District, 110022, Shenyang, China
- Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province, No. 39 Huaxiang Road, Tiexi District, 110022, Shenyang, China
| | - Shuyu Li
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 39 Huaxiang Road, Tiexi District, 110022, Shenyang, China
- Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province, No. 39 Huaxiang Road, Tiexi District, 110022, Shenyang, China
| | - Shanshan Wu
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 39 Huaxiang Road, Tiexi District, 110022, Shenyang, China
- Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province, No. 39 Huaxiang Road, Tiexi District, 110022, Shenyang, China
| | - Fujie Zhao
- Obstetrics and Gynecology Department, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, 110022, Shenyang, China
| | - Jichun Tan
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 39 Huaxiang Road, Tiexi District, 110022, Shenyang, China.
- Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province, No. 39 Huaxiang Road, Tiexi District, 110022, Shenyang, China.
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Dong WR, Li YY, Liu TT, Zhou G, Chen YX. Ethyl acetate extract of Terminalia chebula alleviates DSS-induced ulcerative colitis in C57BL/6 mice. Front Pharmacol 2023; 14:1229772. [PMID: 38152693 PMCID: PMC10751924 DOI: 10.3389/fphar.2023.1229772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Accepted: 11/30/2023] [Indexed: 12/29/2023] Open
Abstract
Background: The Chinese pharmacopeia records Terminalia chebula as effective in treating prolonged diarrhea and dysentery, blood in the stool, and prolapse. Modern pharmacological research proves it has multiple pharmacological benefits, including antioxidant, anti-inflammatory, analgesic, hepatoprotective, neuroprotective, and other properties. Objectives: This study aims to clarify the role of Terminalia chebula's ethyl acetate extract (TCEA) on ulcerative colitis (UC) induced by dextran sodium sulfate (DSS) in mice, as well as explore the potential mechanism of action. Materials and methods: The variation of different extracts of T. chebula was detected using the HPLC technique, and the main components in TCEA were identified. DSS was used to establish a mouse model to mimic the physiological state of UC in humans; the alleviating effect of TCEA and positive control 5-ASA on UC mice were evaluated by gavage treatment. Disease progression was assessed by monitoring the mouse's weight change and disease activity index (DAI). The changes in colon tissue were estimated by measuring colon length, HE, and AB-PAS staining and detecting oxidative stress parameters. The results draw from Western blot and real-time PCR showed the TLR4/MyD88/NF-κB pathway may involve in the anti-inflammatory activity of TCEA. Furthermore, the gut flora sequencing technique was employed to monitor the differentiation of intestinal microbiota of mice induced by DSS and TCEA treatment. Results: TCEA significantly lowered DAI scores and inhibited the weight loss and colonic shortening induced by DSS. The colon histomorphology and oxidative stress levels were enhanced after TCEA treatment compared with DSS induced UC group. TCEA attenuated the inflammatory response by regulating TLR4/MyD88/NF-κB pathway activation. Intestinal flora sequencing showed that DSS and TCEA greatly impacted mice's composition and diversity of intestinal microorganisms. But TCEA increased the abundance of Bacteroidetes and decreased the abundance of Firmicutes and Proteobacteria compared with the DSS group, which contributed a lot to returning the intestinal flora to a balanced state. Conclusion: This study confirms the alleviating effect of TCEA on UC and provides new ideas for developing TCEA into a new drug to treat UC.
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Affiliation(s)
| | | | | | | | - Yu-Xin Chen
- Key Laboratory of Fermentation Engineering (Ministry of Education), Cooperative Innovation Center of Industrial Fermentation (Ministry of Education and Hubei Province), School of Biological Engineering and Food, Hubei University of Technology, Wuhan, China
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Ikenohuchi YJ, Silva MDS, Rego CMA, Francisco AF, da Silva Setúbal S, Ferreira E Ferreira AA, Boeno CN, Santana HM, Felipin KP, de Lima AM, de Mattos Fontes MR, Paloschi MV, Soares AM, Zuliani JP. A C-type lectin induces NLRP3 inflammasome activation via TLR4 interaction in human peripheral blood mononuclear cells. Cell Mol Life Sci 2023; 80:188. [PMID: 37349530 PMCID: PMC11073222 DOI: 10.1007/s00018-023-04839-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 05/17/2023] [Accepted: 06/14/2023] [Indexed: 06/24/2023]
Abstract
Lectins are a large group of proteins found in many snake venoms. BjcuL is a C-type lectin from Bothrops jararacussu snake venom that does not present cytotoxicity action on human peripheral blood mononuclear cells (PBMCs) at concentrations of 5 and 10 μg/mL. BjcuL demonstrates an immunomodulatory role in PBMCs with the production of pro- and anti-inflammatory cytokines (IL-2, IL-10, IFN-γ, IL-6, TNF-α, and IL-17) in addition to stimulate T cells to produce reactive oxygen species (ROS) that could play a role in the acute inflammatory reaction observed in the victims. Inflammasomes are an essential arm in cells of innate immunity to detect and sense a range of endogenous or exogenous, sterile, or infectious stimuli to elicit cellular responses and effector mechanisms. NLRP3 inflammasome is a significant target for this study, because the lectin is responsible for leukocyte activation stimulating the release of inflammatory mediators, which results in dynamic cellular responses to remove the detrimental process to the body in snakebites. Thus, this study aimed to investigate how isolated BjcuL from B. jararacussu venom affects NLRP3 inflammasome activation on PBMCs. For this, the cells were isolated by density gradient and incubated with BjcuL at different periods and concentrations for the evaluation of the activation of the NLRP3 inflammasome through gene and protein expressions of ASC, CASPASE-1, and NLRP3 by RT-qPCR, Western blot, and immunofluorescence, as well as the participation of Toll-like receptor 4 (TLR4) and ROS in the IL-1β production, a product resultant of the NLRP3 inflammasome activation. Herein, BjcuL interacts with TLR4 as demonstrated by in vitro and in silico studies and induces cytokines release via NF-κB signaling. By genic and protein expression assays, BjcuL activates NLRP3 inflammasome, and the pharmacological modulation with LPS-RS, an antagonist of TLR4; LPS-SM, an agonist of TLR4; MCC950, a specific NLRP3 inhibitor, and rotenone, an inhibitor of mitochondrial ROS, confirmed the participation of TLR4 and ROS in the NLRP3 inflammasome activation and IL-1β liberation. The effects of BjcuL on the regulation and activation of the NLRP3 inflammasome complex via TLR4 activation with ROS participation may be determinant for the development of the inflammatory local effects seen in snakebite victims. In addition, in silico together with in vitro studies provide information that may be useful in the rational design of TLR agonists as well as new adjuvants for immunomodulatory therapy.
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Affiliation(s)
- Yoda Janaina Ikenohuchi
- Laboratory of Cellular Immunology Applied to Health, Oswaldo Cruz Foundation, FIOCRUZ Rondônia, Rua da Beira, 7671 BR364, Km 3.5, Porto Velho, RO, CEP 76812-245, Brazil
| | - Milena Daniela Souza Silva
- Laboratory of Cellular Immunology Applied to Health, Oswaldo Cruz Foundation, FIOCRUZ Rondônia, Rua da Beira, 7671 BR364, Km 3.5, Porto Velho, RO, CEP 76812-245, Brazil
| | - Cristina Matiele Alves Rego
- Laboratory of Cellular Immunology Applied to Health, Oswaldo Cruz Foundation, FIOCRUZ Rondônia, Rua da Beira, 7671 BR364, Km 3.5, Porto Velho, RO, CEP 76812-245, Brazil
| | - Aleff Ferreira Francisco
- Department of Physics and Biophysics and Pharmacology, Institute of Biosciences, São Paulo State University, UNESP, Botucatu, SP, Brazil
- Laboratory of Biotechnology of Proteins and Bioactive Compounds Applied to Health (LABIOPROT) and National Institute of Science and Technology in Epidemiology of the Occidental Amazonia (INCT-EPIAMO), Oswaldo Cruz Foundation, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Sulamita da Silva Setúbal
- Laboratory of Cellular Immunology Applied to Health, Oswaldo Cruz Foundation, FIOCRUZ Rondônia, Rua da Beira, 7671 BR364, Km 3.5, Porto Velho, RO, CEP 76812-245, Brazil
| | - Alex Augusto Ferreira E Ferreira
- Laboratory of Cellular Immunology Applied to Health, Oswaldo Cruz Foundation, FIOCRUZ Rondônia, Rua da Beira, 7671 BR364, Km 3.5, Porto Velho, RO, CEP 76812-245, Brazil
| | - Charles Nunes Boeno
- Laboratory of Cellular Immunology Applied to Health, Oswaldo Cruz Foundation, FIOCRUZ Rondônia, Rua da Beira, 7671 BR364, Km 3.5, Porto Velho, RO, CEP 76812-245, Brazil
| | - Hallison Mota Santana
- Laboratory of Cellular Immunology Applied to Health, Oswaldo Cruz Foundation, FIOCRUZ Rondônia, Rua da Beira, 7671 BR364, Km 3.5, Porto Velho, RO, CEP 76812-245, Brazil
| | - Kátia Paula Felipin
- Laboratory of Cellular Immunology Applied to Health, Oswaldo Cruz Foundation, FIOCRUZ Rondônia, Rua da Beira, 7671 BR364, Km 3.5, Porto Velho, RO, CEP 76812-245, Brazil
| | - Anderson Maciel de Lima
- Laboratory of Biotechnology of Proteins and Bioactive Compounds Applied to Health (LABIOPROT) and National Institute of Science and Technology in Epidemiology of the Occidental Amazonia (INCT-EPIAMO), Oswaldo Cruz Foundation, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Marcos Roberto de Mattos Fontes
- Department of Physics and Biophysics and Pharmacology, Institute of Biosciences, São Paulo State University, UNESP, Botucatu, SP, Brazil
- Institute for Advance Studies of the Sea (IEAMAR), São Paulo State University, UNESP, São Vicente, SP, Brazil
| | - Mauro Valentino Paloschi
- Laboratory of Cellular Immunology Applied to Health, Oswaldo Cruz Foundation, FIOCRUZ Rondônia, Rua da Beira, 7671 BR364, Km 3.5, Porto Velho, RO, CEP 76812-245, Brazil
| | - Andreimar Martins Soares
- Laboratory of Biotechnology of Proteins and Bioactive Compounds Applied to Health (LABIOPROT) and National Institute of Science and Technology in Epidemiology of the Occidental Amazonia (INCT-EPIAMO), Oswaldo Cruz Foundation, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Juliana Pavan Zuliani
- Laboratory of Cellular Immunology Applied to Health, Oswaldo Cruz Foundation, FIOCRUZ Rondônia, Rua da Beira, 7671 BR364, Km 3.5, Porto Velho, RO, CEP 76812-245, Brazil.
- Department of Medicine, Federal University of Rondônia, UNIR, Porto Velho, RO, Brazil.
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Madruga D, Garcia MM, Martino L, Hassan H, Elayat G, Ghali L, Ceballos L. Positive correlational shift between crevicular antimicrobial peptide LL-37, pain and periodontal status following non-surgical periodontal therapy. A pilot study. BMC Oral Health 2023; 23:335. [PMID: 37246231 DOI: 10.1186/s12903-023-03023-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 05/06/2023] [Indexed: 05/30/2023] Open
Abstract
BACKGROUND Periodontitis has a high prevalence and uncertain recurrence. Unlike the pro-inflammatory cytokine profile, little is known about the anti-inflammatory cytokine and antimicrobial peptide overview following treatment. The present study aimed to evaluate if any of the antimicrobial peptide LL-37, interleukin (IL) 4, 10 and 6 together with the volume of gingival crevicular fluid (GCF) and total protein concentration in GCF could be used as correlative biomarkers for the severity in periodontitis as well as prognostic factors in the management of the disease. METHODS Forty-five participants were recruited and allocated to the healthy (15), Stage I-II (15) or Stage III-IV periodontitis (15) group. Along with periodontal examination, GCF samples were obtained at baseline and 4-6 weeks following scaling and root planing (SRP) for the periodontitis groups. GCF samples were analyzed by ELISA kits to quantify LL-37 and IL-4, -6 and - 10. One-way ANOVA followed by Dunnett's test was used to determine differences among the three groups at baseline. Two-way ANOVA followed by Sidak's post-hoc test was used to compare between pre- and post-SRP in the two periodontitis groups. RESULTS The amount of GCF volume was significantly correlated to the severity of periodontitis and decreased following SRP, particularly in the Stage III-IV group (p < 0.01). The levels of LL-37, IL-6, and pain and periodontal clinical parameters were significantly correlated to the severity of periodontitis. IL-4 and IL-10 in the periodontitis groups were significantly lower than the healthy group (p < 0.0001) and barely improved following SRP up to the level of the healthy group. CONCLUSIONS With the limitations of this study, crevicular LL-37 may be a candidate for a biomarker of periodontitis and the associated pain upon probing. TRIAL REGISTRATION The study was registered in clinical trials.gov, with number NCT04404335, dated 27/05/2020.
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Affiliation(s)
- David Madruga
- Area of Stomatology, Department of Nursing and Stomatology, Faculty of Health Sciences, Universidad Rey Juan Carlos (URJC), Avda. de Atenas s/n, Alcorcón, E-28922, Spain
| | - Miguel M Garcia
- Area of Pharmacology, Nutrition and Bromatology, Department of Basic Health Sciences, Faculty of Health Sciences, Universidad Rey Juan Carlos (URJC), Unidad Asociada I+D+i Instituto de Química Médica (IQM) CSIC-URJC, Avda. de Atenas s/n, Alcorcón, E-28922, Spain.
- High Performance Experimental Pharmacology Research Group, Universidad Rey Juan Carlos (PHARMAKOM), Alcorcón, Spain.
- Grupo Multidisciplinar de Investigación y Tratamiento del Dolor (i+DOL), Universidad Rey Juan Carlos (URJC), Alcorcón, Spain.
| | - Luca Martino
- Area of Signal Theory and Communications, Department of Signal Theory and Communications and Telematics Systems and Computing, Higher Technical School of Telecommunications Engineering, Universidad Rey Juan Carlos (URJC), Cam. del Molino, 5, Fuenlabrada, E-28942, Spain
- High Performance Data Science and Signal Processing for Networks and Society research group, Universidad Rey Juan Carlos (DSSP), Fuenlabrada, Spain
| | - Haidar Hassan
- Academic Plastic Surgery, School of Medicine and Dentistry, Blizard Institute, Barts and The London, Queen Mary University of London, London, E1 2AD, UK
- Department of Natural Sciences, Faculty of Science and Technology, Middlesex University, London, NW4 4BT, UK
| | - Ghada Elayat
- Department of Natural Sciences, Faculty of Science and Technology, Middlesex University, London, NW4 4BT, UK
- Department of Pathology, Faculty of Medicine, Tanta University, El Bahr St, Tanta, 31111, Egypt
| | - Lucy Ghali
- Department of Natural Sciences, Faculty of Science and Technology, Middlesex University, London, NW4 4BT, UK
| | - Laura Ceballos
- Area of Stomatology, Department of Nursing and Stomatology, Faculty of Health Sciences, Universidad Rey Juan Carlos (URJC), Avda. de Atenas s/n, Alcorcón, E-28922, Spain
- High Performance Development and Innovation in Dental Biomaterials Research Group, Universidad Rey Juan Carlos (IDIBO), Alcorcón, Spain
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Binczak M, Purenne E, Beloeil H, Benhamou D, Mazoit JX. Bupivacaine inhibits the TLR4- and TLR2-Myd88/NF-κB pathways in human leukocytes. Fundam Clin Pharmacol 2023; 37:347-358. [PMID: 36191347 DOI: 10.1111/fcp.12836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 08/31/2022] [Accepted: 10/02/2022] [Indexed: 03/04/2023]
Abstract
Local anesthetics have anti-inflammatory effects. Because most previous experiments were performed with supra-therapeutic concentrations, we measured the effects of clinically relevant concentrations of bupivacaine on the Toll like receptor 4 (TLR4)- and TLR2-myeloid differentiation primary response 88 (MyD88)-nuclear factor kappa-light-chain-enhancer of activated B cell (NF-κB) pathways. We measured tumor necrosis factor alpha (TNF-α) and prostaglandin E2 (PGE2) release, p38 mitogen-activated protein kinase (MAP-kinase) phosphorylation and translocation of NF-κB in human peripheral blood mononuclear cells (hPBMCs) and human monocytes challenged with lipopolysaccharide (LPS) or tripalmitoylated lipopeptide Pam3CysSerLys4 (Pam3CSK4) in the presence or absence of bupivacaine. Similarly, we measured the effect of bupivacaine on HEK293 cells expressing the hTLR4 and the hTLR2 genes and challenged with LPS or Pam3CSK4. Finally, molecular docking simulations of R(+)- and S(-)-bupivacaine binding to the TLR4-myeloid differentiation protein 2 (MD-2) complex and to the TLR2/TLR1 heterodimer were performed. In PBMCs, bupivacaine from 0.1 to 100 μM inhibited LPS-induced TNF-α and PGE2 secretion, phosphorylation of p38 and nuclear translocation of NF-κB in monocytes. Bupivacaine similarly inhibited the effects of Pam3CSK4 on TNF-α secretion. Bupivacaine inhibited the effect of LPS on HEK293 cells expressing the human TLR4 receptor and the effect of Pam3CSK4 on HEK293 cells expressing the human TLR2 receptor. Molecular docking showed that bupivacaine binds to the MD-2 co-receptor of TLR4 and to the TLR2 receptor. Contrary to numerous experiments performed with supratherapeutic doses, our results were obtained with concentrations of bupivacaine as low as 0.1 μM. We conclude that bupivacaine modulates the inflammatory reactions such as those observed after surgery or trauma, at least partly by inhibiting the TLR4- and TLR2-NF-κB pathways.
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Affiliation(s)
- Marie Binczak
- Département d'Anesthésie, Institut Gustave-Roussy, Villejuif, France
| | | | | | - Dan Benhamou
- Laboratoire d'anesthésie, Paris-Saclay University and INSERM U1195 Faculté de Médecine de Bicêtre, Le Kremlin-Bicêtre, France
| | - Jean Xavier Mazoit
- Laboratoire d'anesthésie, Paris-Saclay University and INSERM U1195 Faculté de Médecine de Bicêtre, Le Kremlin-Bicêtre, France
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Prakasam P, Abdul Salam AA, Basheer Ahamed SI. The pathogenic effect of SNPs on structure and function of human TLR4 using a computational approach. J Biomol Struct Dyn 2023; 41:12387-12400. [PMID: 36648243 DOI: 10.1080/07391102.2023.2166998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 01/03/2023] [Indexed: 01/18/2023]
Abstract
The human toll-like receptor (hTLR) 4 single nucleotide polymorphisms (SNPs) are interconnected with cancer, multiple genetic disorders and other immune-related diseases. The detrimental effect of SNPs in hTLR4 with respect to structure and function has not been explored in depth. The present study concatenates the biological consequences of the SNPs along with structural modifications predicted at the hTLR4 gene. A total of 7910 SNPs of hTLR4 were screened, and 21 damage-causing SNPs were identified. Out of 21, seven are present in the extracellular region, of which three were detected as deleterious and the fourth one as moderate. These three mutations are located in a highly conserved region and influence conformational change. The change leads to the widening of the Leucine-rich repeat (LRR) arc to a maximum of 16.9 Å and a minimum of 8.7 Å. Expansion/shortening of LRR arc, never discussed before, would cause loss of myeloid differentiation factor 2 (MD-2) interactions in the interior and diminish lipopolysaccharide (LPS) responses. Similarly, in all mutant structures, the binding region for HMGB1 and LPS is deflating or in an unsupportive conformation. Thus, SNPs affect the regular signaling cascade and might result in human sepsis, genetic disorders, cancer and other immunological related diseases.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Priya Prakasam
- Department of Bioinformatics, Pondicherry University, Kalapet, Pondicherry, India
| | - Abdul Ajees Abdul Salam
- Department of Atomic and Molecular Physics, Centre for Applied Nanosciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
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Small Molecules as Toll-like Receptor 4 Modulators Drug and In-House Computational Repurposing. Biomedicines 2022; 10:biomedicines10092326. [PMID: 36140427 PMCID: PMC9496124 DOI: 10.3390/biomedicines10092326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 09/08/2022] [Accepted: 09/09/2022] [Indexed: 12/05/2022] Open
Abstract
The innate immunity toll-like receptor 4 (TLR4) system is a receptor of paramount importance as a therapeutic target. Virtual screening following a “computer-aided drug repurposing” approach was applied to the discovery of novel TLR4 modulators with a non-lipopolysaccharide-like structure. We screened almost 29,000 approved drugs and drug-like molecules from commercial, public, and in-house academia chemical libraries and, after biological assays, identified several compounds with TLR4 antagonist activity. Our computational protocol showed to be a robust approach for the identification of hits with drug-like scaffolds as possible inhibitors of the TLR4 innate immune pathways. Our collaborative work broadens the chemical diversity for inspiration of new classes of TLR4 modulators.
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Li M, Pan S, Chen H, Yan S, Liu Y. Effect of TLR-4 gene polymorphisms on sepsis susceptibility in neonates: a systematic review and meta-analysis. Biomark Med 2022; 16:1005-1017. [PMID: 36052709 DOI: 10.2217/bmm-2022-0390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: To clarify the role of polymorphisms rs4986790 and rs4986791 in TLR-4 with susceptibility to neonatal sepsis. Methods: To evaluate the possible correlation of polymorphisms rs4986790 and rs4986791 with sepsis risk, odds ratios (ORs) were calculated. The heterogeneity was evaluated by χ2-based Q-test. Results: For rs4986790, ORs were 1.36 (95% CI: 1.05-1.79, p = 0.017) and 1.84 (95% CI: 0.04-7.9, p = 0.410) under AG+GG versus AA and G vs. A models, respectively. For rs4986791, ORs were 2.22 (95% CI: 1.25-3.94, p = 0.006) and 2.20 (95% CI: 1.26-3.85, p = 0.005) under CT+TT versus CC and of T versus C models, respectively. Conclusion: The rs4986790 and rs4986791 polymorphisms in TLR-4 could influence the sepsis susceptibility in neonates.
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Affiliation(s)
- Ming Li
- Intensive Care Unit, Shanghai Construction Group Hospital, Shanghai, 200433, China
| | - Shiguang Pan
- Intensive Care Unit, Yantai Qi Shan Hospital, Yantai, Shandong, 264001, China
| | - Huilin Chen
- Intensive Care Unit, Shanghai Construction Group Hospital, Shanghai, 200433, China
| | - Shuying Yan
- Intensive Care Unit, Shanghai Construction Group Hospital, Shanghai, 200433, China
| | - Yuxin Liu
- Emergency Department, Chongqing University Affiliated Three Gorges Hospital (Bai'an Branch), Chongqing, 404000, China
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Synergistic Effect of Polydatin and Polygonatum sibiricum Polysaccharides in Combating Atherosclerosis via Suppressing TLR4-Mediated NF- κB Activation in ApoE-Deficient Mice. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:3885153. [PMID: 35845572 PMCID: PMC9283052 DOI: 10.1155/2022/3885153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 06/17/2022] [Indexed: 11/18/2022]
Abstract
Objective Atherosclerosis is a chronic inflammatory disease, which is closely related to hyperlipidemia, inflammatory responses, and oxidative stress. As natural products, polydatin (PD) and Polygonatum sibiricum polysaccharides (PSP) have remarkable pharmacological effects in anti-inflammatory, antioxidant stress, and lipid regulation. In this study, we sought to investigate whether the combination of polydatin and P. sibiricum polysaccharides play an anti-atherosclerotic role in alleviating inflammatory responses by inhibiting the toll-like receptor4 (TLR4)/myeloid differentiation factor88(MyD88)/nuclear factor-kappa B(NF-κB) signaling pathway. Methods Thirty-two ApoE-/- mice were fed with a high-fat diet (HFD) starting at the age of 8 weeks. Mice were randomly divided into four groups; (1) model group, (2) PD (100 mg/kg) + PSP (50 mg/kg) group, (3) TAK-242 (3 mg/kg) (TLR4 inhibitor) group, (4) PD (100 mg/kg) + PSP (50 mg/kg) + TAK-242 (3 mg/kg) group. Eight age-matched wild-type C57BL/6J mice fed an ordinary diet were used as a control group. Blood lipid levels were measured with an automatic biochemical analyzer. The lipid accumulation and histopathological changes in the aorta and liver were observed by Oil Red O and hematoxylin and eosin (H&E) staining, respectively. ELISA was performed to measure the serum levels of vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1). Western blot analysis was performed to analyze the expression of key proteins in the TLR4/MyD88/NF-κB signaling pathway. Results Compared with the model group, the combination of PD and PSP significantly inhibit serum lipids (low-density lipoprotein cholesterol, total cholesterol, and triglyceride) and cell adhesion molecules (VCAM-1, ICAM-1). Oil Red O staining indicated that the combination of PD and PSP decrease lipid accumulation in the aorta and liver. Moreover, H&E staining suggested that the combination of PD and PSP alleviate aortic intimal hyperplasia, inflammatory cell infiltration, and hepatic steatosis. Finally, the combination of PD and PSP inhibit the expression of TLR4, MyD88, and the phosphorylation level of NF-κB p65 protein in the aorta. Conclusions Polydatin synergizes with P. sibiricum polysaccharides in preventing the development of atherosclerosis in ApoE-/- mice by inhibiting the TLR4/MyD88/NF-κB signaling pathway.
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Gubatan J, Boye TL, Temby M, Sojwal RS, Holman DR, Sinha SR, Rogalla SR, Nielsen OH. Gut Microbiome in Inflammatory Bowel Disease: Role in Pathogenesis, Dietary Modulation, and Colitis-Associated Colon Cancer. Microorganisms 2022; 10:1371. [PMID: 35889090 PMCID: PMC9316834 DOI: 10.3390/microorganisms10071371] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/03/2022] [Accepted: 07/05/2022] [Indexed: 12/11/2022] Open
Abstract
The gut microbiome has increasingly been recognized as a critical and central factor in inflammatory bowel disease (IBD). Here, we review specific microorganisms that have been suggested to play a role in the pathogenesis of IBD and the current state of fecal microbial transplants as a therapeutic strategy in IBD. We discuss specific nutritional and dietary interventions in IBD and their effects on gut microbiota composition. Finally, we examine the role and mechanisms of the gut microbiome in mediating colitis-associated colon cancer.
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Affiliation(s)
- John Gubatan
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA 94305, USA; (M.T.); (R.S.S.); (D.R.H.); (S.R.S.); (S.R.R.)
| | - Theresa Louise Boye
- Department of Gastroenterology, Medical Section, Herlev Hospital, University of Copenhagen, DK-2730 Copenhagen, Denmark; (T.L.B.); or (O.H.N.)
| | - Michelle Temby
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA 94305, USA; (M.T.); (R.S.S.); (D.R.H.); (S.R.S.); (S.R.R.)
| | - Raoul S. Sojwal
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA 94305, USA; (M.T.); (R.S.S.); (D.R.H.); (S.R.S.); (S.R.R.)
| | - Derek R. Holman
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA 94305, USA; (M.T.); (R.S.S.); (D.R.H.); (S.R.S.); (S.R.R.)
| | - Sidhartha R. Sinha
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA 94305, USA; (M.T.); (R.S.S.); (D.R.H.); (S.R.S.); (S.R.R.)
| | - Stephan R. Rogalla
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA 94305, USA; (M.T.); (R.S.S.); (D.R.H.); (S.R.S.); (S.R.R.)
| | - Ole Haagen Nielsen
- Department of Gastroenterology, Medical Section, Herlev Hospital, University of Copenhagen, DK-2730 Copenhagen, Denmark; (T.L.B.); or (O.H.N.)
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12
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Li W, Huang R, Gong X, Zhao Z, Zhang L, Zhou Q, Jiang X, Tie H, Wan J, Wang B. Allicin attenuated hepatic ischemia/reperfusion injury in mice by regulating PPARγ-IRAK-M-TLR4 signal pathway. Food Funct 2022; 13:7361-7376. [PMID: 35730673 DOI: 10.1039/d2fo00751g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Background: Hepatic ischemia/reperfusion (I/R) injury to the liver is a significant cause of morbidity and mortality following liver surgery, trauma, and hemorrhagic shock. It was reported that allicin, a type of garlic compound, had a protective effect against other hepatic diseases. Allicin's ability to protect against liver injury caused by ischemic reperfusion remains unknown. As a result, we conducted this study to determine allicin's effects and mechanism of action in hepatic I/R injury. Method: The liver I/R injury model was established by clamping the blood supply to the left and middle liver lobes. Three days prior to the hepatic I/R injury, different concentrations of allicin were gavaged. Then, hepatic function, histological changes, apoptosis markers, oxidative stress, and inflammatory cytokines were measured, and the molecular mechanisms were evaluated using western blot. Another separation experiment used IRAK-M knockout mice and peroxisome proliferator-activated receptor-gamma (PPARγ) inhibitor to deduce the molecular mechanisms. Results: Pretreatment with allicin prior to hepatic I/R injury reduced liver damage by inhibiting aminotransferase activity and alleviating liver injury. It significantly decreased cell apoptosis, interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α) production, and hepatic oxidative stress. Furthermore, this study demonstrated that GW9662 (inhibitor of PPARγ) abrogated allicin's positive effect by inhibiting PPARγ expression while suppressing IRAK-M expression. Thus, the depletion of IRAK-M cannot influence the expression of PPARγ. The down-regulation of PPARγ-IRAK-M disabled the protection of allicin in I/R injury. Conclusion: Allicin protects against hepatic I/R injury via dose-dependent regulation of the PPARγ-IRAK-M-TLR4 signaling pathway, and it may be a potential drug in future clinical treatment.
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Affiliation(s)
- Weiwei Li
- Department of Anesthesiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
| | - Rui Huang
- Department of Anesthesiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China. .,Department of Anesthesiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang 310058, China
| | - Xia Gong
- Department of Anatomy, Chongqing Medical University, Chongqing 400016, China
| | - Zizuo Zhao
- Department of Anesthesiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
| | - Lidan Zhang
- Department of Anesthesiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
| | - Qin Zhou
- Department of Anesthesiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China. .,Department of Anesthesiology, Army Medical Center of PLA, Army Medical University, Chongqing 400042, China
| | - Xujie Jiang
- Department of Anesthesiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China. .,Department of Anesthesiology, Chengdu Fifth People's Hospital, Sichuan 611130, China
| | - Hongtao Tie
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Jingyuan Wan
- Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing 400016, China.
| | - Bin Wang
- Department of Anesthesiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
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García MM, Molina-Álvarez M, Rodríguez-Rivera C, Paniagua N, Quesada E, Uranga JA, Rodríguez-Franco MI, Pascual D, Goicoechea C. Antinociceptive and modulatory effect of pathoplastic changes in spinal glia of a TLR4/CD14 blocking molecule in two models of pain in rat. Biomed Pharmacother 2022; 150:112986. [PMID: 35462333 DOI: 10.1016/j.biopha.2022.112986] [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: 02/08/2022] [Revised: 04/02/2022] [Accepted: 04/14/2022] [Indexed: 11/02/2022] Open
Abstract
The role of spinal glia in the development and maintenance of chronic pain has become over the last years a subject of increasing interest. In this regard, toll-like receptor 4 (TLR4) signaling has been proposed as a major trigger mechanism. Hence, in this study we explored the implications of TLR4 inhibition in the periphery and primarily in the CNS, focusing on the impact this inhibition renders in pain development and glia activation in the dorsal horn in two models of pain. Making use of a synthetic cluster of differentiation 14 (CD14)/TLR4 antagonist, the effect of TLR4 blockade on tactile allodynia and heat hyperalgesia was evaluated in osteoarthritic and postoperative rat models. An in vitro parallel artificial membrane permeation assay was performed to determine the proneness of the drug to permeate the blood-brain barrier prior to systemic and central administration. Findings suggest a dominant role of peripheral TLR4 in the model of incisional pain, whilst both peripheral and central TLR4 seem to be responsible for osteoarthritic pain. That is, central and peripheral TLR4 may be differently involved in the etiopathology of diverse types of pain what potentially seems a promising approach in the management of pain.
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Affiliation(s)
- Miguel M García
- Area of Pharmacology and Nutrition and Bromatology, Department of Basic Health Sciences, School of Health Sciences, Universidad Rey Juan Carlos, High Performance Experimental Pharmacology Research Group, Universidad Rey Juan Carlos (PHARMAKOM), Madrid, Spain; Unidad Asociada I+D+i Instituto de Química Médica (IQM-CSIC)-URJC, Madrid, Spain
| | - Miguel Molina-Álvarez
- Area of Pharmacology and Nutrition and Bromatology, Department of Basic Health Sciences, School of Health Sciences, Universidad Rey Juan Carlos, High Performance Experimental Pharmacology Research Group, Universidad Rey Juan Carlos (PHARMAKOM), Madrid, Spain; Unidad Asociada I+D+i Instituto de Química Médica (IQM-CSIC)-URJC, Madrid, Spain
| | - Carmen Rodríguez-Rivera
- Area of Pharmacology and Nutrition and Bromatology, Department of Basic Health Sciences, School of Health Sciences, Universidad Rey Juan Carlos, High Performance Experimental Pharmacology Research Group, Universidad Rey Juan Carlos (PHARMAKOM), Madrid, Spain; Unidad Asociada I+D+i Instituto de Química Médica (IQM-CSIC)-URJC, Madrid, Spain
| | - Nancy Paniagua
- Area of Pharmacology and Nutrition and Bromatology, Department of Basic Health Sciences, School of Health Sciences, Universidad Rey Juan Carlos, High Performance Experimental Pharmacology Research Group, Universidad Rey Juan Carlos (PHARMAKOM), Madrid, Spain; Unidad Asociada I+D+i Instituto de Química Médica (IQM-CSIC)-URJC, Madrid, Spain
| | - Ernesto Quesada
- Instituto de Química Médica, Consejo Superior de Investigaciones Científicas (IQM-CSIC), Madrid, Spain; Unidad Asociada I+D+i Instituto de Química Médica (IQM-CSIC)-URJC, Madrid, Spain
| | - José Antonio Uranga
- Area of Histology, Department of Basic Health Sciences, School of Health Sciences, Universidad Rey Juan Carlos, High Performance Research Group in Physiopathology and Pharmacology of the Digestive System, Universidad Rey Juan Carlos (NEUGUT), Madrid, Spain
| | | | - David Pascual
- Area of Pharmacology and Nutrition and Bromatology, Department of Basic Health Sciences, School of Health Sciences, Universidad Rey Juan Carlos, High Performance Experimental Pharmacology Research Group, Universidad Rey Juan Carlos (PHARMAKOM), Madrid, Spain; Unidad Asociada I+D+i Instituto de Química Médica (IQM-CSIC)-URJC, Madrid, Spain.
| | - Carlos Goicoechea
- Area of Pharmacology and Nutrition and Bromatology, Department of Basic Health Sciences, School of Health Sciences, Universidad Rey Juan Carlos, High Performance Experimental Pharmacology Research Group, Universidad Rey Juan Carlos (PHARMAKOM), Madrid, Spain; Unidad Asociada I+D+i Instituto de Química Médica (IQM-CSIC)-URJC, Madrid, Spain
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14
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RIP1 post-translational modifications. Biochem J 2022; 479:929-951. [PMID: 35522161 DOI: 10.1042/bcj20210725] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 04/13/2022] [Accepted: 04/19/2022] [Indexed: 11/17/2022]
Abstract
Receptor interacting protein 1 (RIP1) kinase is a critical regulator of inflammation and cell death signaling, and plays a crucial role in maintaining immune responses and proper tissue homeostasis. Mounting evidence argues for the importance of RIP1 post-translational modifications in control of its function. Ubiquitination by E3 ligases, such as inhibitors of apoptosis (IAP) proteins and LUBAC, as well as the reversal of these modifications by deubiquitinating enzymes, such as A20 and CYLD, can greatly influence RIP1 mediated signaling. In addition, cleavage by caspase-8, RIP1 autophosphorylation, and phosphorylation by a number of signaling kinases can greatly impact cellular fate. Disruption of the tightly regulated RIP1 modifications can lead to signaling disbalance in TNF and/or TLR controlled and other inflammatory pathways, and result in severe human pathologies. This review will focus on RIP1 and its many modifications with an emphasis on ubiquitination, phosphorylation, and cleavage, and their functional impact on the RIP1's role in signaling pathways.
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15
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Engin S, Barut EN, Yaşar YK, Soysal AÇ, Arıcı T, Kerimoğlu G, Kadıoğlu M, Sezen SF. Trimetazidine attenuates cyclophosphamide-induced cystitis by inhibiting TLR4-mediated NFκB signaling in mice. Life Sci 2022; 301:120590. [PMID: 35504331 DOI: 10.1016/j.lfs.2022.120590] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 04/19/2022] [Accepted: 04/25/2022] [Indexed: 11/26/2022]
Abstract
AIM Cyclophosphamide (CP)-induced cystitis is a challenging clinical problem involving inflammation and dysfunction of bladder. Trimetazidine (TMZ) is an anti-anginal drug with anti-oxidant and anti-inflammatory properties. We aimed to investigate the protective effects of TMZ in CP-induced cystitis via inhibiting TLR4/NFκB signaling. MAIN METHODS Balb/c mice were administrated TMZ (10 or 20 mg/kg/day) intraperitoneally (i.p.) for 5 consecutive days before CP. On day 6, cystitis was induced by a single dose of CP (300 mg/kg, i.p.). Mesna (2-mercaptoethane sulfonate sodium; 30 mg/kg, i.p.) was administered 20 min before and at 4 and 8 h after the CP injection. After 24 h of cystitis induction, the bladders were removed for histopathological evaluation, contractility studies, biochemical analysis and western blotting. MTT assay was performed in a cancer cell line (MDA-MB-231) to evaluate the effect of TMZ on the cytotoxicity of CP. KEY FINDINGS CP-induced severe cystitis was confirmed by histological disturbances and the decrease in carbachol-evoked contractions of detrusor strips, which was partially improved by TMZ (20 mg/kg/day). SOD activity and GSH content were decreased whereas TNF-α and IL-1β levels were increased in the bladders of CP-treated mice, which were restored by TMZ or mesna. TMZ reduced the CP-induced increase in the protein expressions of caspase-3, TLR4 and phosphorylated-NFκB in bladder tissues. TMZ alone decreased the cell viability and TMZ also enhanced the cytotoxicity of CP. SIGNIFICANCE Our study provides the first preclinical evidence that TMZ attenuates CP-induced urotoxicity by enhancing anti-oxidant capacity and suppressing inflammation possibly via downregulating TLR4-mediated NFκB signaling while augmenting the cytotoxicity of CP.
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Affiliation(s)
- Seçkin Engin
- Department of Pharmacology, Faculty of Pharmacy, Karadeniz Technical University, Trabzon, Turkiye.
| | - Elif Nur Barut
- Department of Pharmacology, Faculty of Pharmacy, Karadeniz Technical University, Trabzon, Turkiye
| | - Yeşim Kaya Yaşar
- Department of Pharmacology, Faculty of Pharmacy, Karadeniz Technical University, Trabzon, Turkiye; Drug and Pharmaceutical Technology Application and Research Center, Karadeniz Technical University, Trabzon, Turkiye
| | - Aysun Çelik Soysal
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Bülent Ecevit University, Zonguldak, Turkiye
| | - Tuğba Arıcı
- Başaksehir Cam and Sakura City Hospital, İstanbul, Turkiye
| | - Gökçen Kerimoğlu
- Department of Histology and Embryology, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkiye
| | - Mine Kadıoğlu
- Department of Medical Pharmacology, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkiye
| | - Sena F Sezen
- Department of Pharmacology, Faculty of Pharmacy, Karadeniz Technical University, Trabzon, Turkiye; Drug and Pharmaceutical Technology Application and Research Center, Karadeniz Technical University, Trabzon, Turkiye
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16
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Phytochemicals targeting Toll-like receptors 4 (TLR4) in inflammatory bowel disease. Chin Med 2022; 17:53. [PMID: 35484567 PMCID: PMC9047385 DOI: 10.1186/s13020-022-00611-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 04/14/2022] [Indexed: 12/11/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a collective term for inflammatory diseases including Crohn's disease and ulcerative colitis. Toll-like receptor 4 (TLR4) is thought to play a key role in the pathogenesis of IBD. Inhibition of TLR4 has been recognized as an effective target for the treatment of IBD. Many phytochemicals have been shown to have potential as new drugs for the treatment of IBD. This review surveyed the available literature and reports which focused on the in vivo effects of phytochemicals targeting TLR4 in different models of IBD, and clarified the significance of TLR4 as a current therapeutic target for IBD. Based on our review, we have concluded that phytochemicals targeting TLR4 are potentially effective candidates for developing new therapeutic drugs against IBD.
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Almeida PP, Valdetaro L, Thomasi BBDM, Stockler-Pinto MB, Tavares-Gomes AL. High-fat diets on the enteric nervous system: Possible interactions and mechanisms underlying dysmotility. Obes Rev 2022; 23:e13404. [PMID: 34873814 DOI: 10.1111/obr.13404] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/25/2021] [Accepted: 11/15/2021] [Indexed: 01/09/2023]
Abstract
Obesity is a chronic disease that affects various physiological systems. Among them, the gastrointestinal tract appears to be a main target of this disease. High-fat diet (HFD) animal models can help recapitulate the classic signs of obesity and present a series of gastrointestinal alterations, mainly dysmotility. Because intestinal motility is governed by the enteric nervous system (ENS), enteric neurons, and glial cells have been studied in HFD models. Given the importance of the ENS in general gut physiology, this review aims to discuss the relationship between HFD-induced neuroplasticity and gut dysmotility observed in experimental models. Furthermore, we highlight components of the gut environment that might influence enteric neuroplasticity, including gut microbiota, enteric glio-epithelial unit, serotonin release, immune cells, and disturbances such as inflammation and oxidative stress.
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Affiliation(s)
| | - Luisa Valdetaro
- Postgraduate Program in Neurosciences, Fluminense Federal University, Niterói, Brazil
| | | | - Milena Barcza Stockler-Pinto
- Postgraduate Program in Cardiovascular Sciences, Fluminense Federal University, Niterói, Brazil.,Postgraduate Program in Nutrition Sciences, Fluminense Federal University, Niterói, Brazil
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TLR4 activation inhibits the proliferation and osteogenic differentiation of skeletal muscle stem cells by downregulating LGI1. J Physiol Biochem 2022; 78:667-678. [PMID: 35294724 DOI: 10.1007/s13105-022-00888-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 03/03/2022] [Indexed: 10/18/2022]
Abstract
Skeletal muscle stem cells (SMSCs) are vital to the growth, maintenance, and repair of the muscles; emerging evidence has indicated that Toll-like receptor 4 (TLR4) can potentially regulate muscle regeneration. In present study, in vitro and in vivo experiments were performed to explore the correlation of TLR4 with leucine-rich glioma-inactivated 1 (LGI1) as well as their effects on the proliferation and osteogenesis potential of SMSCs. In order to examine the regulatory mechanisms of TLR4 and LGI1 in SMSCs, the obtained cells were treated with lipopolysaccharide (LPS, used as an activator of TLR4) of different concentration at different time points as well as the siRNA against LGI1. Subsequently, a series of detection was undertaken in order to measure the proliferation and differentiation potential of SMSCs, which involved detection of the related factors, cell activity, and the sphere-forming capability. Following LPS treatment, the increased TLR4 expression and reduced LGI1 expression were observed. Consequently, we also discovered that Erk signaling pathway was inactivated and cell proliferation and osteogenesis capabilities declined, presented by the downregulation of related factors such as cyclin B1 and runt-related transcription factor 2. Moreover, the cell activity and sphere-formation performance of SMSCs were also declined. These results were also validated in rats with cecal ligation and perforation-induced rat models with sepsis. In conclusion, the present study reveals a regulatory mechanism in SMSCs whereby LGI1 expression is reduced by TLR4, thus impeding cell proliferation and osteogenesis, highlighting TLR4 as a potential therapeutic target against many diseases related to SMSCs.
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Zhang W, An EK, Hwang J, Jin JO. Mice Plasmacytoid Dendritic Cells Were Activated by Lipopolysaccharides Through Toll-Like Receptor 4/Myeloid Differentiation Factor 2. Front Immunol 2021; 12:727161. [PMID: 34603298 PMCID: PMC8481683 DOI: 10.3389/fimmu.2021.727161] [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: 06/18/2021] [Accepted: 09/02/2021] [Indexed: 11/29/2022] Open
Abstract
Plasmacytoid dendritic cells (pDCs) are known to respond to viral infections. However, the activation of pDCs by bacterial components such as lipopolysaccharides (LPS) has not been well studied. Here, we found that pDCs, conventional dendritic cells (cDCs), and B cells express high levels of toll-like receptor 4 (TLR4), a receptor for LPS. Moreover, LPS could effectively bind to not only cDCs but also pDCs and B cells. Intraperitoneal administration of LPS promoted activation of splenic pDCs and cDCs. LPS treatment led to upregulation of interferon regulatory factor 7 (IRF7) and induced production of interferon-alpha (IFN-α) in splenic pDCs. Furthermore, LPS-dependent upregulation of co-stimulatory molecules in pDCs did not require the assistance of other immune cells, such as cDCs. However, the production levels of IFN-α were decreased in cDC-depleted splenocytes, indicating that cDCs may contribute to the enhancement of IFN-α production in pDCs. Finally, we showed that activation of pDCs by LPS requires the TLR4 and myeloid differentiation factor 2 (MD2) signaling pathways. Thus, these results demonstrate that the gram-negative component LPS can directly stimulate pDCs via TLR4/MD2 stimulation in mice.
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Affiliation(s)
- Wei Zhang
- Shanghai Public Health Clinical Center, Shanghai Medical College, Fudan University, Shanghai, China
| | - Eun-Koung An
- Research Institute of Cell Culture, Yeungnam University, Gyeongsan, South Korea
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, South Korea
| | - Juyoung Hwang
- Shanghai Public Health Clinical Center, Shanghai Medical College, Fudan University, Shanghai, China
- Research Institute of Cell Culture, Yeungnam University, Gyeongsan, South Korea
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, South Korea
| | - Jun-O Jin
- Shanghai Public Health Clinical Center, Shanghai Medical College, Fudan University, Shanghai, China
- Research Institute of Cell Culture, Yeungnam University, Gyeongsan, South Korea
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, South Korea
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20
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Guo J, Liao M, Wang J. TLR4 signaling in the development of colitis-associated cancer and its possible interplay with microRNA-155. Cell Commun Signal 2021; 19:90. [PMID: 34479599 PMCID: PMC8414775 DOI: 10.1186/s12964-021-00771-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 07/29/2021] [Indexed: 12/17/2022] Open
Abstract
Ulcerative colitis (UC) has closely been associated with an increased risk of colorectal cancer. However, the exact mechanisms underlying colitis-associated cancer (CAC) development remain unclear. As a classic pattern-recognition receptor, Toll like receptor (TLR)4 is a canonical receptor for lipopolysaccharide of Gram-negative bacteria (including two CAC-associated pathogens Fusobacterium nucleatum and Salmonella), and functions as a key bridge molecule linking oncogenic infection to colonic inflammatory and malignant processes. Accumulating studies verified the overexpression of TLR4 in colitis and CAC, and the over-expressed TLR4 might promote colitis-associated tumorigenesis via facilitating cell proliferation, protecting malignant cells against apoptosis, accelerating invasion and metastasis, as well as contributing to the creation of tumor-favouring cellular microenvironment. In recent years, considerable attention has been focused on the regulation of TLR4 signaling in the context of colitis-associated tumorigenesis. MicroRNA (miR)-155 and TLR4 exhibited a similar dynamic expression change during CAC development and shared similar CAC-promoting properties. The available data demonstrated an interplay between TLR4 and miR-155 in the context of different disorders or cell lines. miR-155 could augment TLR4 signaling through targeting negative regulators SOCS1 and SHIP1; and TLR4 activation would induce miR-155 expression via transcriptional and post-transcriptional mechanisms. This possible TLR4-miR-155 positive feedback loop might result in the synergistic accelerating effect of TLR4 and miR-155 on CAC development.![]() Video abstract
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Affiliation(s)
- Jie Guo
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan, China.,New Medicine Innovation and Development Institute, Department of Pharmacy, College of Medicine, Wuhan University of Science and Technology, Wuhan, China
| | - Mengfan Liao
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan, China.,New Medicine Innovation and Development Institute, Department of Pharmacy, College of Medicine, Wuhan University of Science and Technology, Wuhan, China
| | - Jun Wang
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan, China. .,New Medicine Innovation and Development Institute, Department of Pharmacy, College of Medicine, Wuhan University of Science and Technology, Wuhan, China.
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21
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Naveed M, Tehreem S, Arshad S, Bukhari SA, Shabbir MA, Essa R, Ali N, Zaib S, Khan A, Al-Harrasi A, Khan I. Design of a novel multiple epitope-based vaccine: An immunoinformatics approach to combat SARS-CoV-2 strains. J Infect Public Health 2021; 14:938-946. [PMID: 34119848 PMCID: PMC8093003 DOI: 10.1016/j.jiph.2021.04.010] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 04/12/2021] [Accepted: 04/22/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Since the SARS-CoV-2 outbreak in December 2019 in Wuhan, China, the virus has infected more than 153 million individuals across the world due to its human-to-human transmission. The USA is the most affected country having more than 32-million cases till date. Sudden high fever, pneumonia and organ failure have been observed in infected individuals. OBJECTIVES In the current situation of emerging viral disease, there is no specific vaccine, or any therapeutics available for SARS-CoV-2, thus there is a dire need to design a potential vaccine to combat the virus by developing immunity in the population. The purpose of present study was to develop a potential vaccine by targeting B and T-cell epitopes using bioinformatics approaches. METHODS B- and T-cell epitopes are predicted from novel M protein-SARS-CoV-2 for the development of a unique multiple epitope vaccine by applying bioinformatics approaches. These epitopes were analyzed and selected for their immunogenicity, antigenicity scores, and toxicity in correspondence to their ability to trigger immune response. In combination to epitopes, best multi-epitope of potential immunogenic property was constructed. The epitopes were joined using EAAAK, AAY and GPGPG linkers. RESULTS The constructed vaccine showed good results of worldwide population coverage and promising immune response. This constructed vaccine was subjected to in-silico immune simulations by C-ImmSim. Chimeric protein construct was cloned into PET28a (+) vector for expression study in Escherichia coli using snapgene. CONCLUSION This vaccine design proved effective in various computer-based immune response analysis as well as showed good population coverage. This study is solely dependent on developing M protein-based vaccine, and these in silico findings would be a breakthrough in the development of an effective vaccine to eradicate SARS-CoV-2 globally.
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Affiliation(s)
- Muhammad Naveed
- Department of Biotechnology, Faculty of Life Sciences, University of Central Punjab, Lahore 54590, Pakistan.
| | - Sana Tehreem
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Sundas Arshad
- Faculty of Science, Technology and Medicine, University of Luxembourg, Luxembourg
| | - Syeda Aniqa Bukhari
- Research Center for Modeling and Simulation, National University of Science and Technology, Islamabad, Pakistan
| | - Muhammad Aqib Shabbir
- Department of Biotechnology, Faculty of Life Sciences, University of Central Punjab, Lahore 54590, Pakistan
| | - Ramsha Essa
- Center of Excellence in Molecular Biology (CEMB), Punjab University, Lahore, Pakistan
| | - Nouman Ali
- Department of Biotechnology, Faculty of Life Sciences, University of Central Punjab, Lahore 54590, Pakistan
| | - Sumera Zaib
- Department of Biochemistry, Faculty of Life Sciences, University of Central Punjab, Lahore 54590, Pakistan
| | - Ajmal Khan
- Natural and Medical Sciences Research Center, University of Nizwa, P.O Box 33, Postal Code 616, Birkat Al Mauz, Nizwa, Oman
| | - Ahmed Al-Harrasi
- Natural and Medical Sciences Research Center, University of Nizwa, P.O Box 33, Postal Code 616, Birkat Al Mauz, Nizwa, Oman.
| | - Imtiaz Khan
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, United Kingdom.
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22
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Manes NP, Nita-Lazar A. Molecular Mechanisms of the Toll-Like Receptor, STING, MAVS, Inflammasome, and Interferon Pathways. mSystems 2021; 6:e0033621. [PMID: 34184910 PMCID: PMC8269223 DOI: 10.1128/msystems.00336-21] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Pattern recognition receptors (PRRs) form the front line of defense against pathogens. Many of the molecular mechanisms that facilitate PRR signaling have been characterized in detail, which is critical for the development of accurate PRR pathway models at the molecular interaction level. These models could support the development of therapeutics for numerous diseases, including sepsis and COVID-19. This review describes the molecular mechanisms of the principal signaling interactions of the Toll-like receptor, STING, MAVS, and inflammasome pathways. A detailed molecular mechanism network is included as Data Set S1 in the supplemental material.
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Affiliation(s)
- Nathan P. Manes
- Functional Cellular Networks Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Aleksandra Nita-Lazar
- Functional Cellular Networks Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
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23
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Thorgersen EB, Asvall J, Frøysnes IS, Schjalm C, Larsen SG, Dueland S, Andersson Y, Fodstad Ø, Mollnes TE, Flatmark K. Increased Local Inflammatory Response to MOC31PE Immunotoxin After Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy. Ann Surg Oncol 2021; 28:5252-5262. [PMID: 34019185 PMCID: PMC8349350 DOI: 10.1245/s10434-021-10022-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 02/26/2021] [Indexed: 11/18/2022]
Abstract
Background Despite extensive cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (CRS-HIPEC), most patients with resectable peritoneal metastases from colorectal cancer experience disease relapse. MOC31PE immunotoxin is being explored as a novel treatment option for these patients. MOC31PE targets the cancer-associated epithelial cell adhesion molecule, and kills cancer cells by distinct mechanisms, simultaneously causing immune activation by induction of immunogenic cell death (ICD). Methods Systemic and local cytokine responses were analyzed in serum and intraperitoneal fluid samples collected the first three postoperative days from clinically comparable patients undergoing CRS-HIPEC with (n = 12) or without (n = 26) intraperitoneal instillation of MOC31PE. A broad panel of 27 pro- and antiinflammatory interleukins, chemokines, interferons, and growth factors was analyzed using multiplex technology. Results The time course and magnitude of the systemic and local postoperative cytokine response after CRS-HIPEC were highly compartmentalized, with modest systemic responses contrasting substantial intraperitoneal responses. Administration of MOC31PE resulted in changes that were broader and of higher magnitude compared with CRS-HIPEC alone. Significantly increased levels of innate proinflammatory cytokines, such as interleukin (IL)-6, IL-1β, and tumor necrosis factor (TNF) as well as an interesting time response curve for the strong T-cell stimulator interferon (IFN)-γ and its associated chemokine interferon gamma-induced protein/chemokine (C-X-C motif) ligand 10 (IP-10) were detected, all associated with ICD. Conclusions Our study revealed a predominately local rather than systemic inflammatory response to CRS-HIPEC, which was strongly enhanced by MOC31PE treatment. The MOC31PE-induced intraperitoneal inflammatory reaction could contribute to improve remnant cancer cell killing, but the mechanisms remain to be elucidated in future studies. Supplementary Information The online version contains supplementary material available at 10.1245/s10434-021-10022-0.
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Affiliation(s)
- Ebbe Billmann Thorgersen
- Department of Gastroenterological Surgery, Oslo University Hospital The Radium Hospital, Oslo, Norway. .,Department of Immunology, Oslo University Hospital Rikshospitalet, Oslo, Norway.
| | - Jørund Asvall
- Division of Emergencies and Critical Care, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Ida Storhaug Frøysnes
- Department of Tumor Biology, Oslo University Hospital The Radium Hospital, Oslo, Norway
| | - Camilla Schjalm
- Department of Immunology, Oslo University Hospital Rikshospitalet, Oslo, Norway.,Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Stein Gunnar Larsen
- Department of Gastroenterological Surgery, Oslo University Hospital The Radium Hospital, Oslo, Norway
| | - Svein Dueland
- Department of Oncology, Oslo University Hospital The Radium Hospital, Oslo, Norway
| | - Yvonne Andersson
- Department of Tumor Biology, Oslo University Hospital The Radium Hospital, Oslo, Norway
| | - Øystein Fodstad
- Department of Tumor Biology, Oslo University Hospital The Radium Hospital, Oslo, Norway
| | - Tom Eirik Mollnes
- Department of Immunology, Oslo University Hospital Rikshospitalet, Oslo, Norway.,Faculty of Medicine, University of Oslo, Oslo, Norway.,Research Laboratory, Nordland Hospital, Bodø, and Faculty of Health Sciences, K.G. Jebsen TREC, University of Tromsø, Tromsø, Norway.,Centre of Molecular Inflammation Research, Norwegian University of Science and Technology, Trondheim, Norway
| | - Kjersti Flatmark
- Department of Gastroenterological Surgery, Oslo University Hospital The Radium Hospital, Oslo, Norway.,Department of Tumor Biology, Oslo University Hospital The Radium Hospital, Oslo, Norway.,Faculty of Medicine, University of Oslo, Oslo, Norway
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24
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Huang SQ, Wen Y, Sun HY, Deng J, Zhang YL, Huang QL, Wang B, Luo ZL, Tang LJ. Abdominal paracentesis drainage attenuates intestinal inflammation in rats with severe acute pancreatitis by inhibiting the HMGB1-mediated TLR4 signaling pathway. World J Gastroenterol 2021; 27:815-834. [PMID: 33727772 PMCID: PMC7941863 DOI: 10.3748/wjg.v27.i9.815] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 12/14/2020] [Accepted: 02/01/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Our previous studies confirmed that abdominal paracentesis drainage (APD) attenuates intestinal mucosal injury in rats with severe acute pancreatitis (SAP), and improves administration of enteral nutrition in patients with acute pancreatitis (AP). However, the underlying mechanisms of the beneficial effects of APD remain poorly understood.
AIM To evaluate the effect of APD on intestinal inflammation and accompanying apoptosis induced by SAP in rats, and its potential mechanisms.
METHODS SAP was induced in male adult Sprague-Dawley rats by 5% sodium taurocholate. Mild AP was induced by intraperitoneal injections of cerulein (20 μg/kg body weight, six consecutive injections). Following SAP induction, a drainage tube connected to a vacuum ball was placed into the lower right abdomen of the rats to build APD. Morphological changes, serum inflammatory mediators, serum and ascites high mobility group box protein 1 (HMGB1), intestinal barrier function indices, apoptosis and associated proteins, and toll-like receptor 4 (TLR4) signaling molecules in intestinal tissue were assessed.
RESULTS APD significantly alleviated intestinal mucosal injury induced by SAP, as demonstrated by decreased pathological scores, serum levels of D-lactate, diamine oxidase and endotoxin. APD reduced intestinal inflammation and accompanying apoptosis of mucosal cells, and normalized the expression of apoptosis-associated proteins in intestinal tissues. APD significantly suppressed activation of the intestinal TLR4 signaling pathway mediated by HMGB1, thus exerting protective effects against SAP-associated intestinal injury.
CONCLUSION APD improved intestinal barrier function, intestinal inflammatory response and accompanying mucosal cell apoptosis in SAP rats. The beneficial effects are potentially due to inhibition of HMGB1-mediated TLR4 signaling.
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Affiliation(s)
- Shang-Qing Huang
- Department of General Surgery & Pancreatic Injury and Repair Key Laboratory of Sichuan Province, The General Hospital of Western Theater Command (Chengdu Military General Hospital), Chengdu 610083, Sichuan Province, China
| | - Yi Wen
- Department of General Surgery & Pancreatic Injury and Repair Key Laboratory of Sichuan Province, The General Hospital of Western Theater Command (Chengdu Military General Hospital), Chengdu 610083, Sichuan Province, China
| | - Hong-Yu Sun
- Basic Medical Laboratory, The General Hospital of Western Theater Command (Chengdu Military General Hospital), Chengdu 610083, Sichuan Province, China
| | - Jie Deng
- Department of Clinical Pharmacy, The General Hospital of Western Theater Command (Chengdu Military General Hospital), Chengdu 610083, Sichuan Province, China
| | - Yao-Lei Zhang
- Basic Medical Laboratory, The General Hospital of Western Theater Command (Chengdu Military General Hospital), Chengdu 610083, Sichuan Province, China
| | - Qi-Lin Huang
- Department of General Surgery & Pancreatic Injury and Repair Key Laboratory of Sichuan Province, The General Hospital of Western Theater Command (Chengdu Military General Hospital), Chengdu 610083, Sichuan Province, China
| | - Bing Wang
- Department of General Surgery & Pancreatic Injury and Repair Key Laboratory of Sichuan Province, The General Hospital of Western Theater Command (Chengdu Military General Hospital), Chengdu 610083, Sichuan Province, China
| | - Zhu-Lin Luo
- Department of General Surgery & Pancreatic Injury and Repair Key Laboratory of Sichuan Province, The General Hospital of Western Theater Command (Chengdu Military General Hospital), Chengdu 610083, Sichuan Province, China
| | - Li-Jun Tang
- Department of General Surgery & Pancreatic Injury and Repair Key Laboratory of Sichuan Province, The General Hospital of Western Theater Command (Chengdu Military General Hospital), Chengdu 610083, Sichuan Province, China
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25
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Recent Advances in Biomarkers and Regenerative Medicine for Diabetic Neuropathy. Int J Mol Sci 2021; 22:ijms22052301. [PMID: 33669048 PMCID: PMC7956542 DOI: 10.3390/ijms22052301] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/15/2021] [Accepted: 02/16/2021] [Indexed: 02/07/2023] Open
Abstract
Diabetic neuropathy is one of the most common complications of diabetes. This complication is peripheral neuropathy with predominant sensory impairment, and its symptoms begin with hyperesthesia and pain and gradually become hypoesthesia with the loss of nerve fibers. In some cases, lower limb amputation occurs when hypoalgesia makes it impossible to be aware of trauma or mechanical stimuli. On the other hand, up to 50% of these complications are asymptomatic and tend to delay early detection. Therefore, sensitive and reliable biomarkers for diabetic neuropathy are needed for an early diagnosis of this condition. This review focuses on systemic biomarkers that may be useful at this time. It also describes research on the relationship between target gene polymorphisms and pathological conditions. Finally, we also introduce current information on regenerative therapy, which is expected to be a therapeutic approach when the pathological condition has progressed and nerve degeneration has been completed.
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26
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Niu S, Zhao Y, Ma B, Zhang R, Rong Z, Ni L, Di X, Liu C. Construction and Validation of a New Model for the Prediction of Rupture in Patients with Intracranial Aneurysms. World Neurosurg 2021; 149:e437-e446. [PMID: 33567366 DOI: 10.1016/j.wneu.2021.02.006] [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: 11/17/2020] [Revised: 01/31/2021] [Accepted: 02/01/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND Despite progress in the detection of biological molecules that contribute to intracranial aneurysm (IA) development, many pathophysiological mechanisms remain unclear, particularly with regard to predicting IA rupture. In this study, we aimed to identify hub genes and construct a new model to predict IA rupture. METHODS Four datasets (62 ruptured IAs, 16 unruptured IAs, and 31 normal controls) were downloaded from the Gene Expression Omnibus. Differentially expressed genes (DEGs) were identified between the IAs and normal controls. All overlapping genes were analyzed using weighted gene co-expression network analysis. Functional enrichment analyses were performed using key modules. We then intersected the key module genes with DEGs. Protein-protein interaction networks were assessed to identify key hub genes. Least absolute shrinkage and selection operator logistic regression analysis was performed to construct a prediction model. A receiver operating characteristic curve was constructed to evaluate the reliability of the scoring system. RESULTS After intersection and normalization, 433 DEGs were identified and 15,388 genes were selected for weighted gene co-expression network analysis. The black module with 1145 genes exhibited the highest correlation with IA rupture. Many potential mechanisms are involved, such as the inflammatory response, innate immune response, extracellular exosome, and extracellular space. Thirty hub genes were selected from the protein-protein interaction, and 4 independent risk genes, TNFAIP6, NCF2, OSM, and IRAK3, were identified in the least absolute shrinkage and selection operator logistic regression model. CONCLUSIONS Our prediction model not only serves as a useful tool for assessing the risk of IA rupture, but the key genes identified herein could also serve as biomarkers and therapeutic targets.
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Affiliation(s)
- Shuai Niu
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yue Zhao
- Department of Thoracic Surgery, Changhai Hospital, Second Military Medical University, Shanghai, China; Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University, Shanghai, China
| | - Baitao Ma
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Rui Zhang
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhihua Rong
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Leng Ni
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiao Di
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Changwei Liu
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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27
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Chen X, Deng T, Huo T, Dong F, Deng J. MiR-140-5p/TLR4 /NF-κB signaling pathway: Crucial role in inflammatory response in 16HBE cells induced by dust fall PM 2.5. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 208:111414. [PMID: 33080424 DOI: 10.1016/j.ecoenv.2020.111414] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 09/21/2020] [Accepted: 09/23/2020] [Indexed: 06/11/2023]
Abstract
Fine atmospheric particles with a diameter of 2.5 µm or less (PM2.5) have a large specific surface area, and carry a variety of organic matter, heavy metals, minerals and bacteria. They are an important risk factor in human non-communicable disease. To explore the molecular regulatory mechanism of the airway inflammation caused by PM2.5, an in vitro human bronchial epithelial (16HBE) cells poisoning model was deployed. Results showed that PM2.5 had a strong inhibitory effect on cells viability, and induced cells to secrete high levels of IL-6 and CXCL 8. These two biomarkers of inflammation were significantly reduced in the presence of TAK 242. TLR4, MyD88, IKK, and p-p65 proteins were highly expressed on exposure to PM2.5. Pretreatment with TAK 242 interfered with the activation of the TLR4 signaling pathway. By detecting the presence of lipopolysaccharides (LPS) in PM2.5 which had been autoclaved, it was speculated that the activation of the TLR4/NF-κB signaling pathway may be mediated by LPS. It was demonstrated using gain- and loss- function experiments that miR-140-5p negatively regulated TLR4 to mediate inflammation in 16HBE cells. The dual-luciferase reporter assay confirmed that miR-140-5p directly binds to the 3' untranslated region (3' UTR) of TLR4 to initiate biological activity. In conclusion, this study revealed a new mechanism by which the miR-140-5p/TLR4 signaling pathway mediated the inflammatory response of 16HBE cells induced by PM2.5. Differential expression of miRNA, and the activation of the TLR4/NF-κB signaling pathway induced by PM2.5 implicates PM2.5 in the pathogenesis of airway inflammation.
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Affiliation(s)
- Xiangwa Chen
- Department of Laboratory Medicine, Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Tao Deng
- Southwest University of Science and Technology, Mianyang 621010, China
| | - Tingting Huo
- Southwest University of Science and Technology, Mianyang 621010, China
| | - Faqin Dong
- Southwest University of Science and Technology, Mianyang 621010, China.
| | - Jianjun Deng
- Department of Laboratory Medicine, Affiliated Hospital of Southwest Medical University, Luzhou 646000, China; Sichuan Mianyang 404 Hospital, Mianyang 621000, China.
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28
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Haynie T, Gubler S, Drees C, Heaton T, Mitton T, Gleave Q, Bendelac A, Deng S, Savage PB. Synthesis of the pentasaccharide repeating unit from Ruminococcus gnavus and measurement of its inflammatory properties. RSC Adv 2021; 11:14357-14361. [PMID: 35424013 PMCID: PMC8697740 DOI: 10.1039/d1ra01918j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 04/07/2021] [Indexed: 12/13/2022] Open
Abstract
The roles played by the gut microbiome in human health are increasingly recognized, and the prevalence of specific microorganisms has been correlated with different diseases. For example, blooms of the Gram-positive bacterium Ruminococcus gnavus have been correlated with inflammatory bowel disease, and recently a polysaccharide produced by this organism was shown to stimulate release of inflammatory cytokines. This stimulation was proposed to signal through toll-like receptor 4 (TLR4). We have synthesized the pentasaccharide repeating unit of this polysaccharide and showed that it stimulates TNF-α and IL-6 release from bone marrow-derived dendritic cells (BMDCs) in a TLR4-dependent manner. A related glycan does not stimulate significant cytokine release, demonstrating TLR4 selectivity in glycan recognition. The roles played by the gut microbiome in human health are increasingly recognized, and the prevalence of specific microorganisms has been correlated with different diseases.![]()
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Affiliation(s)
- Teron Haynie
- Department of Chemistry and Biochemistry
- Brigham Young University
- Provo
- USA
| | - Shawn Gubler
- Department of Chemistry and Biochemistry
- Brigham Young University
- Provo
- USA
| | - Christoph Drees
- Committee on Immunology
- Department of Pathology
- University of Chicago
- Chicago
- USA
| | - Tanner Heaton
- Department of Chemistry and Biochemistry
- Brigham Young University
- Provo
- USA
| | - Tanner Mitton
- Department of Chemistry and Biochemistry
- Brigham Young University
- Provo
- USA
| | - Quinn Gleave
- Department of Chemistry and Biochemistry
- Brigham Young University
- Provo
- USA
| | - Albert Bendelac
- Committee on Immunology
- Department of Pathology
- University of Chicago
- Chicago
- USA
| | - Shenglou Deng
- Department of Chemistry and Biochemistry
- Brigham Young University
- Provo
- USA
| | - Paul B. Savage
- Department of Chemistry and Biochemistry
- Brigham Young University
- Provo
- USA
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Wen B, Zhang C, Zhou J, Zhang Z, Che Q, Cao H, Bai Y, Guo J, Su Z. Targeted treatment of alcoholic liver disease based on inflammatory signalling pathways. Pharmacol Ther 2020; 222:107752. [PMID: 33253739 DOI: 10.1016/j.pharmthera.2020.107752] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/15/2020] [Accepted: 11/20/2020] [Indexed: 02/06/2023]
Abstract
Targeted therapy is an emerging treatment strategy for alcoholic liver disease (ALD). Inflammation plays an important role in the occurrence and development of ALD, and is a key choice for its targeted treatment, and anti-inflammatory treatment has been considered beneficial for liver disease. Surprisingly, immune checkpoint inhibitors have become important therapeutic agents for hepatocellular carcinoma (HCC). Moreover, studies have shown that the combination of inflammatory molecule inhibitors and immune checkpoint inhibitors can exert better effects than either alone in mouse models of HCC. This review discusses the mechanism of hepatic ethanol metabolism and the conditions under which inflammation occurs. In addition, we focus on the potential molecular targets in inflammatory signalling pathways and summarize the potential targeted inhibitors and immune checkpoint inhibitors, providing a theoretical basis for the targeted treatment of ALD and the development of new combination therapy strategies for HCC.
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Affiliation(s)
- Bingjian Wen
- Guangdong Engineering Research Center of Natural Products and New Drugs, Guangdong Provincial University Engineering Technology Research Center of Natural Products and Drugs, Guangdong Pharmaceutical University, Guangzhou 510006, China; Guangdong Metabolic Diseases Research Centre of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Chengcheng Zhang
- Guangdong Engineering Research Center of Natural Products and New Drugs, Guangdong Provincial University Engineering Technology Research Center of Natural Products and Drugs, Guangdong Pharmaceutical University, Guangzhou 510006, China; Guangdong Metabolic Diseases Research Centre of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Jingwen Zhou
- Guangdong Engineering Research Center of Natural Products and New Drugs, Guangdong Provincial University Engineering Technology Research Center of Natural Products and Drugs, Guangdong Pharmaceutical University, Guangzhou 510006, China; Guangdong Metabolic Diseases Research Centre of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Zhengyan Zhang
- Guangdong Engineering Research Center of Natural Products and New Drugs, Guangdong Provincial University Engineering Technology Research Center of Natural Products and Drugs, Guangdong Pharmaceutical University, Guangzhou 510006, China; Guangdong Metabolic Diseases Research Centre of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Qishi Che
- Guangzhou Rainhome Pharm & Tech Co., Ltd., Guangzhou 510663, China
| | - Hua Cao
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan 528458, China
| | - Yan Bai
- School of Public Health, Guangdong Pharmaceutical University, Guangzhou 510310, China
| | - Jiao Guo
- Guangdong Metabolic Diseases Research Centre of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Zhengquan Su
- Guangdong Engineering Research Center of Natural Products and New Drugs, Guangdong Provincial University Engineering Technology Research Center of Natural Products and Drugs, Guangdong Pharmaceutical University, Guangzhou 510006, China; Guangdong Metabolic Diseases Research Centre of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China.
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Li G, Deng J, Qi Y, Liu R, Liu Z. COLEC12 regulates apoptosis of osteosarcoma through Toll-like receptor 4-activated inflammation. J Clin Lab Anal 2020; 34:e23469. [PMID: 32822099 PMCID: PMC7676208 DOI: 10.1002/jcla.23469] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 05/30/2020] [Accepted: 06/18/2020] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE To investigate the role of COLEC12 in osteosarcoma and observe the relationship between COLEC12 knockdown and the inflammation of osteosarcoma. Then, further explore whether the process is regulated by TLR4. METHOD GEPIA and TCGA systems were used to predict the potential function of COLEC12. Western blot and RT-PCR were used to analyze the protein expression, or mRNA level, of COLEC12 in different tissue or cell lines. The occurrence and development of osteosarcoma were observed by using COLEC12 knockdown lentivirus. The inflammation indexes of osteosarcoma, in vitro and in vivo, were explored. TLR4 knockdown lentivirus was applied to the relationship between COLEC12 and TLR4. RESULTS COLEC12 expression in SARC tumor tissue was higher than in normal, and a high expression of COLEC12 in SARC patients had a worse prognostic outcome. Pairwise gene correlation analysis revealed a potential relationship between COLEC12 and TLR4. The COLEC12 expression and mRNA level in the tumor or Saos-2 cells were increased. COLEC12 knockdown lentivirus could inhibit osteosarcoma development, in vivo and vitro, through reducing tumor volume and weight, weakening tumor proliferation, migration, and invasion, and enhancing apoptosis. Furthermore, COLEC12 knockdown could increase inflammation of osteosarcoma, in vivo and in vitro, through inducing myeloperoxidase (MPO), TLR4, NF-κB, and C3, and expression of related inflammatory factors. Finally, TLR4 knockdown lentivirus inhibits the progress of inflammation after COLEC12 regulation, in vivo and vitro. CONCLUSION COLEC12 may be able to regulate apoptosis and inflammation of osteosarcoma, and TLR4 may be the downstream target factor of COLEC12 in inflammation.
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Affiliation(s)
- Guang‐Zhang Li
- Department of Orthopedicsthe First Hospital of QinhuangdaoHebeiChina
| | - Jian‐Feng Deng
- Department of Orthopedicsthe First Hospital of QinhuangdaoHebeiChina
| | - Ying‐Zhao Qi
- Department of Orthopedicsthe First Hospital of QinhuangdaoHebeiChina
| | - Ran Liu
- Department of Orthopedicsthe First Hospital of QinhuangdaoHebeiChina
| | - Zhi‐Xin Liu
- Department of Orthopedicsthe First Hospital of QinhuangdaoHebeiChina
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Wang G, Wang H, Banerjee N, Khan MF. Interplay and roles of oxidative stress, toll-like receptor 4 and Nrf2 in trichloroethene-mediated autoimmunity. Toxicol Appl Pharmacol 2020; 408:115258. [PMID: 33007382 DOI: 10.1016/j.taap.2020.115258] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 09/25/2020] [Accepted: 09/27/2020] [Indexed: 02/07/2023]
Abstract
Previous studies in MRL+/+ mice suggest involvement of oxidative stress (OS) in trichloroethene (TCE)-mediated autoimmunity. However, molecular mechanisms underlying the autoimmunity remain to be fully elucidated. Even though toll-like receptors (TLRs) and Nuclear factor (erythroid-derived 2)-like2 (Nrf2) pathways are implicated in autoimmune diseases (ADs), interplay of OS, TLR and Nrf2 in TCE-mediated autoimmune response remains unexplored. This study was, therefore, undertaken to clearly establish a link among OS, TLR4 and Nrf2 pathways in TCE-induced autoimmunity. Groups of female MRL+/+ mice were treated with TCE, sulforaphane (SFN, an antioxidant) or TCE + SFN (TCE, 10 mmol/kg, i.p., every 4th day; SFN, 8 mg/kg, i.p., every other day) for 6 weeks. TCE exposure led to greater formation of serum 4-hydroxynonenal (HNE)-protein adducts, HNE-specific circulating immune complexes (CICs) and protein carbonyls which were associated with significant increases in serum antinuclear antibodies (ANAs). Moreover, incubation of splenocytes from TCE-treated mice with HNE-modified proteins resulted in enhanced splenocyte proliferation and cytokine release evidenced by increased expression of cyclin D3, Cyclin-dependent kinase 6 (CDK6) and phospho-pRb as well as increased release of IL-6, TNF-α and INF-γ. More importantly, TCE exposure resulted in increased expression of TLR4, MyD88, IRAK4, NF-kB and reduced expression of Nrf2 and HO-1 in the spleen. Remarkably, SFN supplementation not only attenuated TCE-induced OS, upregulation in TLR4 and NF-kB signaling and downregulation of Nrf2, but also ANA levels. These results, in addition to providing further support to a role of OS, also suggest that an interplay among OS, TLR4 and Nrf2 pathways contributes to TCE-mediated autoimmune response. Attenuation of TCE-mediated autoimmunity by SFN provides an avenue for preventive and/or therapeutic strategies for ADs involving OS.
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Affiliation(s)
- Gangduo Wang
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, United States of America
| | - Hui Wang
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, United States of America
| | - Nivedita Banerjee
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, United States of America
| | - M Firoze Khan
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, United States of America.
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Federico S, Pozzetti L, Papa A, Carullo G, Gemma S, Butini S, Campiani G, Relitti N. Modulation of the Innate Immune Response by Targeting Toll-like Receptors: A Perspective on Their Agonists and Antagonists. J Med Chem 2020; 63:13466-13513. [PMID: 32845153 DOI: 10.1021/acs.jmedchem.0c01049] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Toll-like receptors (TLRs) are a class of proteins that recognize pathogen-associated molecular patterns (PAMPs) and damaged-associated molecular patterns (DAMPs), and they are involved in the regulation of innate immune system. These transmembrane receptors, localized at the cellular or endosomal membrane, trigger inflammatory processes through either myeloid differentiation primary response 88 (MyD88) or TIR-domain-containing adapter-inducing interferon-β (TRIF) signaling pathways. In the last decades, extensive research has been performed on TLR modulators and their therapeutic implication under several pathological conditions, spanning from infections to cancer, from metabolic disorders to neurodegeneration and autoimmune diseases. This Perspective will highlight the recent discoveries in this field, emphasizing the role of TLRs in different diseases and the therapeutic effect of their natural and synthetic modulators, and it will discuss insights for the future exploitation of TLR modulators in human health.
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Affiliation(s)
- Stefano Federico
- Department of Biotechnology, Chemistry and Pharmacy, Department of Excellence 2018-2022, University of Siena, via Aldo Moro 2, 53100, Siena, Italy
| | - Luca Pozzetti
- Department of Biotechnology, Chemistry and Pharmacy, Department of Excellence 2018-2022, University of Siena, via Aldo Moro 2, 53100, Siena, Italy
| | - Alessandro Papa
- Department of Biotechnology, Chemistry and Pharmacy, Department of Excellence 2018-2022, University of Siena, via Aldo Moro 2, 53100, Siena, Italy
| | - Gabriele Carullo
- Department of Biotechnology, Chemistry and Pharmacy, Department of Excellence 2018-2022, University of Siena, via Aldo Moro 2, 53100, Siena, Italy
| | - Sandra Gemma
- Department of Biotechnology, Chemistry and Pharmacy, Department of Excellence 2018-2022, University of Siena, via Aldo Moro 2, 53100, Siena, Italy
| | - Stefania Butini
- Department of Biotechnology, Chemistry and Pharmacy, Department of Excellence 2018-2022, University of Siena, via Aldo Moro 2, 53100, Siena, Italy
| | - Giuseppe Campiani
- Department of Biotechnology, Chemistry and Pharmacy, Department of Excellence 2018-2022, University of Siena, via Aldo Moro 2, 53100, Siena, Italy
| | - Nicola Relitti
- Department of Biotechnology, Chemistry and Pharmacy, Department of Excellence 2018-2022, University of Siena, via Aldo Moro 2, 53100, Siena, Italy
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Yang J, Liu H, Han S, Fu Z, Wang J, Chen Y, Wang L. Melatonin pretreatment alleviates renal ischemia-reperfusion injury by promoting autophagic flux via TLR4/MyD88/MEK/ERK/mTORC1 signaling. FASEB J 2020; 34:12324-12337. [PMID: 32662527 DOI: 10.1096/fj.202001252r] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/01/2020] [Accepted: 07/02/2020] [Indexed: 12/18/2022]
Abstract
Autophagy is an important mechanism for cellular homeostasis and survival during pathologic stress conditions in the kidney, such as ischemia-reperfusion (IR) injury. In this study, renal IR was induced in female C57BL/6 mice after melatonin administration. Renal function, histological damage, inflammatory infiltration, cytokine production, oxidative stress, antioxidant capacity, autophagy changing, apoptosis levels, and autophagy-associated intracellular signaling pathway were assessed to evaluate the impact of antecedent melatonin treatment on IR-induced renal injury. The administration of melatonin resulted in significantly preserved renal function, and the protective effect was associated with ameliorated oxidative stress, limited pro-inflammatory cytokine production, and neutrophil and macrophage infiltration. Moreover, autophagic flux was increased after melatonin administration while the apoptosis levels were decreased in the melatonin-pretreated mice. Using TAK-242 and CRX-527, we confirmed that MyD88-dependent TLR4 and MEK/ERK/mTORC1 signaling participated in melatonin-induced autophagy in IR mice. Collectively, our results provide novel evidence that antecedent melatonin treatment provides protection for the kidney against IR injury by enhancing autophagy, as regulated by the TLR4/MyD88/MEK/ERK/mTORC1 signaling pathway. Therefore, melatonin preconditioning offers a potential therapeutic approach to prevent renal IR injury related to various clinical conditions.
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Affiliation(s)
- Jinghui Yang
- Department of Organ Transplantation, Shanghai ChangZheng Hospital, Second Military Medical University, Shanghai, China
| | - Hao Liu
- Department of Organ Transplantation, Shanghai ChangZheng Hospital, Second Military Medical University, Shanghai, China
| | - Shu Han
- Department of Organ Transplantation, Shanghai ChangZheng Hospital, Second Military Medical University, Shanghai, China
| | - Zhiren Fu
- Department of Organ Transplantation, Shanghai ChangZheng Hospital, Second Military Medical University, Shanghai, China
| | - Jiyuan Wang
- Department of Organ Transplantation, Shanghai ChangZheng Hospital, Second Military Medical University, Shanghai, China
| | - Yu Chen
- Department of Organ Transplantation, Shanghai ChangZheng Hospital, Second Military Medical University, Shanghai, China
| | - Liming Wang
- Department of Organ Transplantation, Shanghai ChangZheng Hospital, Second Military Medical University, Shanghai, China
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