1
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Necker-Brown A, Kooi C, Thorne AJ, Bansal A, Mostafa MM, Chandramohan P, Gao A, Kalyanaraman K, Milani A, Gill S, Georgescu A, Sasse SK, Gerber AN, Leigh R, Newton R. Inducible gene expression of IκB-kinase ε is dependent on nuclear factor-κB in human pulmonary epithelial cells. Biochem J 2024; 481:959-980. [PMID: 38941070 DOI: 10.1042/bcj20230461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 06/19/2024] [Accepted: 06/28/2024] [Indexed: 06/29/2024]
Abstract
While IκB-kinase-ε (IKKε) induces immunomodulatory genes following viral stimuli, its up-regulation by inflammatory cytokines remains under-explored. Since airway epithelial cells respond to airborne insults and potentiate inflammation, IKKε expression was characterized in pulmonary epithelial cell lines (A549, BEAS-2B) and primary human bronchial epithelial cells grown as submersion or differentiated air-liquid interface cultures. IKKε expression was up-regulated by the pro-inflammatory cytokines, interleukin-1β (IL-1β) and tumour necrosis factor-α (TNFα). Thus, mechanistic interrogations in A549 cells were used to demonstrate the NF-κB dependence of cytokine-induced IKKε. Furthermore, chromatin immunoprecipitation in A549 and BEAS-2B cells revealed robust recruitment of the NF-κB subunit, p65, to one 5' and two intronic regions within the IKKε locus (IKBKE). In addition, IL-1β and TNFα induced strong RNA polymerase 2 recruitment to the 5' region, the first intron, and the transcription start site. Stable transfection of the p65-binding regions into A549 cells revealed IL-1β- and TNFα-inducible reporter activity that required NF-κB, but was not repressed by glucocorticoid. While critical NF-κB motifs were identified in the 5' and downstream intronic regions, the first intronic region did not contain functional NF-κB motifs. Thus, IL-1β- and TNFα-induced IKKε expression involves three NF-κB-binding regions, containing multiple functional NF-κB motifs, and potentially other mechanisms of p65 binding through non-classical NF-κB binding motifs. By enhancing IKKε expression, IL-1β may prime, or potentiate, responses to alternative stimuli, as modelled by IKKε phosphorylation induced by phorbol 12-myristate 13-acetate. However, since IKKε expression was only partially repressed by glucocorticoid, IKKε-dependent responses could contribute to glucocorticoid-resistant disease.
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Affiliation(s)
- Amandah Necker-Brown
- Department of Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
| | - Cora Kooi
- Department of Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
- Department of Medicine, Lung Health Research Group. Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Andrew J Thorne
- Department of Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
| | - Akanksha Bansal
- Department of Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
| | - Mahmoud M Mostafa
- Department of Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
| | - Priyanka Chandramohan
- Department of Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
| | - Alex Gao
- Department of Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
| | | | - Arya Milani
- Department of Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
| | - Sachman Gill
- Department of Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
| | - Andrei Georgescu
- Department of Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
| | - Sarah K Sasse
- Department of Medicine, National Jewish Health, Denver, CO, U.S.A
| | - Anthony N Gerber
- Department of Medicine, National Jewish Health, Denver, CO, U.S.A
- Department of Immunology and Genomic Medicine, National Jewish Health, Denver, CO, U.S.A
| | - Richard Leigh
- Department of Medicine, Lung Health Research Group. Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Robert Newton
- Department of Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
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2
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Witwit H, Khafaji R, Salaniwal A, Kim AS, Cubitt B, Jackson N, Ye C, Weiss SR, Martinez-Sobrido L, de la Torre JC. Activation of protein kinase receptor (PKR) plays a pro-viral role in mammarenavirus-infected cells. J Virol 2024; 98:e0188323. [PMID: 38376197 PMCID: PMC10949842 DOI: 10.1128/jvi.01883-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 01/26/2024] [Indexed: 02/21/2024] Open
Abstract
Many viruses, including mammarenaviruses, have evolved mechanisms to counteract different components of the host cell innate immunity, which is required to facilitate robust virus multiplication. The double-stranded RNA (dsRNA) sensor protein kinase receptor (PKR) pathway plays a critical role in the cell anti-viral response. Whether PKR can restrict the multiplication of the Old World mammarenavirus lymphocytic choriomeningitis virus (LCMV) and the mechanisms by which LCMV may counteract the anti-viral functions of PKR have not yet been investigated. Here we present evidence that LCMV infection results in very limited levels of PKR activation, but LCMV multiplication is enhanced in the absence of PKR. In contrast, infection with a recombinant LCMV with a mutation affecting the 3'-5' exonuclease (ExoN) activity of the viral nucleoprotein resulted in robust PKR activation in the absence of detectable levels of dsRNA, which was associated with severely restricted virus multiplication that was alleviated in the absence of PKR. However, pharmacological inhibition of PKR activation resulted in reduced levels of LCMV multiplication. These findings uncovered a complex role of the PKR pathway in LCMV-infected cells involving both pro- and anti-viral activities.IMPORTANCEAs with many other viruses, the prototypic Old World mammarenavirus LCMV can interfere with the host cell innate immune response to infection, which includes the dsRNA sensor PKR pathway. A detailed understanding of LCMV-PKR interactions can provide novel insights about mammarenavirus-host cell interactions and facilitate the development of effective anti-viral strategies against human pathogenic mammarenaviruses. In the present work, we present evidence that LCMV multiplication is enhanced in PKR-deficient cells, but pharmacological inhibition of PKR activation unexpectedly resulted in severely restricted propagation of LCMV. Likewise, we document a robust PKR activation in LCMV-infected cells in the absence of detectable levels of dsRNA. Our findings have revealed a complex role of the PKR pathway during LCMV infection and uncovered the activation of PKR as a druggable target for the development of anti-viral drugs against human pathogenic mammarenaviruses.
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Affiliation(s)
- Haydar Witwit
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA
| | - Roaa Khafaji
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA
| | - Arul Salaniwal
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA
| | - Arthur S. Kim
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA
- Department of Chemistry, The Scripps Research Institute, La Jolla, California, USA
| | - Beatrice Cubitt
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA
| | | | - Chengjin Ye
- Texas Biomedical Research Institute, San Antonio, Texas, USA
| | - Susan R. Weiss
- Department of Microbiology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | | | - Juan Carlos de la Torre
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA
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3
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Phan Van T, Huyen Ton Nu Bao T, Leya M, Zhou Z, Jeong H, Lim CW, Kim B. Amlexanox attenuates LPS-induced neuroinflammatory responses in microglial cells via inhibition of NF-κB and STAT3 signaling pathways. Sci Rep 2024; 14:2744. [PMID: 38302598 PMCID: PMC10834963 DOI: 10.1038/s41598-024-53235-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 01/30/2024] [Indexed: 02/03/2024] Open
Abstract
Amlexanox is an anti-inflammatory and anti-allergic agent used clinically for the treatment of aphthous ulcers, allergic rhinitis, and asthma. Recent studies have demonstrated that amlexanox, a selective inhibitor of IkB kinase epsilon (IKKε) and TANK-binding kinase 1 (TBK1), suppresses a range of diseases or inflammatory conditions, such as obesity-related metabolic dysfunction and type 2 diabetes. However, the effects of amlexanox on neuroinflammatory responses to amlexanox have not yet been comprehensively studied. In this study, we investigated the novel therapeutic effect of amlexanox on LPS-induced neuroinflammation in vivo, and intraperitoneal injection of amlexanox markedly reduced LPS-induced IKKε levels, proinflammatory cytokines, and microglial activation, as evidenced by ionized calcium-binding adapter molecule 1 (Iba1) immunostaining. Furthermore, amlexanox significantly reduced proinflammatory cytokines and chemokines in LPS-induced bone marrow-derived macrophages (BMDM), murine BV2, and human HMC3 microglial cells. This data provided considerable evidence that amlexanox can be used as a preventive and curative therapy for neuroinflammatory and neurodegenerative diseases. In terms of mechanism aspects, our results demonstrated that the anti-inflammatory action of amlexanox in BV2 microglial cells was through the downregulation of NF-κB and STAT3 signaling pathways. In addition, the combination of amlexanox and SPI (a STAT3 selective inhibitor) showed high efficiency in inhibiting the production of neurotoxic and pro-inflammatory mediators. Overall, our data provide rational insights into the mechanisms of amlexanox as a potential therapeutic strategy for neuroinflammation-related diseases.
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Affiliation(s)
- Thach Phan Van
- Biosafety Research Institute and Laboratory of Pathology, College of Veterinary Medicine, Jeonbuk National University, 79, Gobong-ro, Iksan, 54596, Republic of Korea
- Department of Biotechnology, NTT Hi-tech Institute, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam
| | - Tien Huyen Ton Nu Bao
- Biosafety Research Institute and Laboratory of Pathology, College of Veterinary Medicine, Jeonbuk National University, 79, Gobong-ro, Iksan, 54596, Republic of Korea
| | - Mwense Leya
- Biosafety Research Institute and Laboratory of Pathology, College of Veterinary Medicine, Jeonbuk National University, 79, Gobong-ro, Iksan, 54596, Republic of Korea
| | - Zixiong Zhou
- Department of Pathology and Institute of Oncology, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian, China
| | - Hyuneui Jeong
- Biosafety Research Institute and Laboratory of Pathology, College of Veterinary Medicine, Jeonbuk National University, 79, Gobong-ro, Iksan, 54596, Republic of Korea
| | - Chae-Woong Lim
- Biosafety Research Institute and Laboratory of Pathology, College of Veterinary Medicine, Jeonbuk National University, 79, Gobong-ro, Iksan, 54596, Republic of Korea
| | - Bumseok Kim
- Biosafety Research Institute and Laboratory of Pathology, College of Veterinary Medicine, Jeonbuk National University, 79, Gobong-ro, Iksan, 54596, Republic of Korea.
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4
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Bunz M, Eisele M, Hu D, Ritter M, Kammerloher J, Lampl S, Schindler M. CD81 suppresses NF-κB signaling and is downregulated in hepatitis C virus expressing cells. Front Cell Infect Microbiol 2024; 14:1338606. [PMID: 38357447 PMCID: PMC10864554 DOI: 10.3389/fcimb.2024.1338606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 01/15/2024] [Indexed: 02/16/2024] Open
Abstract
The tetraspanin CD81 is one of the main entry receptors for Hepatitis C virus, which is a major causative agent to develop liver cirrhosis and hepatocellular carcinoma (HCC). Here, we identify CD81 as one of few surface proteins that are downregulated in HCV expressing hepatoma cells, discovering a functional role of CD81 beyond mediating HCV entry. CD81 was downregulated at the mRNA level in hepatoma cells that replicate HCV. Kinetics of HCV expression were increased in CD81-knockout cells and accompanied by enhanced cellular growth. Furthermore, loss of CD81 compensated for inhibition of pro-survival TBK1-signaling in HCV expressing cells. Analysis of functional phenotypes that could be associated with pro-survival signaling revealed that CD81 is a negative regulator of NF-κB. Interaction of the NF-κB subunits p50 and p65 was increased in cells lacking CD81. Similarly, we witnessed an overall increase in the total levels of phosphorylated and cellular p65 upon CD81-knockout in hepatoma cells. Finally, translocation of p65 in CD81-negative hepatoma cells was markedly induced upon stimulation with TNFα or PMA. Altogether, CD81 emerges as a regulator of pro-survival NF-κB signaling. Considering the important and established role of NF-κB for HCV replication and tumorigenesis, the downregulation of CD81 by HCV and the associated increase in NF-κB signaling might be relevant for viral persistence and chronic infection.
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Affiliation(s)
- Maximilian Bunz
- Institute for Medical Virology and Epidemiology of Viral Diseases, University Hospital Tübingen, Tübingen, Germany
| | - Mona Eisele
- Institute for Medical Virology and Epidemiology of Viral Diseases, University Hospital Tübingen, Tübingen, Germany
| | - Dan Hu
- Institute for Medical Virology and Epidemiology of Viral Diseases, University Hospital Tübingen, Tübingen, Germany
| | - Michael Ritter
- Institute for Medical Virology and Epidemiology of Viral Diseases, University Hospital Tübingen, Tübingen, Germany
| | - Julia Kammerloher
- Institute for Medical Virology and Epidemiology of Viral Diseases, University Hospital Tübingen, Tübingen, Germany
- Institute of Virology, Helmholtz Zentrum München, German Research Center for Environmental Health, Munich, Germany
| | - Sandra Lampl
- Institute of Virology, Helmholtz Zentrum München, German Research Center for Environmental Health, Munich, Germany
| | - Michael Schindler
- Institute for Medical Virology and Epidemiology of Viral Diseases, University Hospital Tübingen, Tübingen, Germany
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5
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Lim S, Jung HR, Lee H, Chu Y, Kim H, Kim E, Lee S. Microtubule-destabilizing agents enhance STING-mediated innate immune response via biased mechanism in human monocyte cells. Biomed Pharmacother 2023; 169:115883. [PMID: 37979373 DOI: 10.1016/j.biopha.2023.115883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 11/10/2023] [Accepted: 11/13/2023] [Indexed: 11/20/2023] Open
Abstract
The stimulator of the interferon gene (STING) signaling pathway acts as a primary defense system against DNA pathogens. Because of the crucial role of STING in type I interferon (IFN) response and innate immunity, extensive research has been conducted to elucidate the roles of various effector molecules involved in STING-mediated signal transduction. However, despite the substantial contribution of microtubules to the immune system, the association between the STING signaling pathway and microtubules remains unclear. In this study, we revealed that the modulation of STING via microtubule-destabilizing agents (MDAs) specifically induced type I IFN responses rather than inflammatory responses in human monocytes. Co-treatment of MDAs with STING agonists induced the elevation of phospho-TANK-binding kinase 1 (TBK1), amplifying the innate immune response. However, during the deficiency of TBK1, the non-canonical signaling pathway through nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) contributed to MDA-induced STING activation in type I IFN response which suggested the versatile regulation of MDA in STING-mediated immunity.
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Affiliation(s)
- Songhyun Lim
- Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, South Korea
| | - Hee Ra Jung
- Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, South Korea
| | - Hyelim Lee
- Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, South Korea
| | - Yeonjeong Chu
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, South Korea
| | - Hyejin Kim
- Therapeutics & Biotechnology Division, Korea Research Institute of Chemical Technology, Daejeon 34114, South Korea
| | - Eunha Kim
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, South Korea
| | - Sanghee Lee
- Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, South Korea; Department of HY-KIST Bio-convergence, Hanyang University, Seoul 04763, South Korea.
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6
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Witwit H, Khafaji R, Salaniwal A, Kim AS, Cubitt B, Jackson N, Ye C, Weiss SR, Martinez-Sobrido L, de la Torre JC. Activation of Protein Kinase R (PKR) Plays a Pro-Viral Role in Mammarenavirus Infected Cells. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.05.570143. [PMID: 38106082 PMCID: PMC10723269 DOI: 10.1101/2023.12.05.570143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Many viruses, including mammarenaviruses, have evolved mechanisms to counteract different components of the host cell innate immunity, which is required to facilitate robust virus multiplication. The double strand (ds)RNA sensor protein kinase receptor (PKR) pathway plays a critical role in the cell antiviral response. Whether PKR can restrict the multiplication of the Old World mammarenavirus lymphocytic choriomeningitis virus (LCMV) and the mechanisms by which LCMV may counteract the antiviral functions of PKR have not yet been investigated. Here we present evidence that LCMV infection results in very limited levels of PKR activation, but LCMV multiplication is enhanced in the absence of PKR. In contrast, infection with a recombinant LCMV with a mutation affecting the 3'-5' exonuclease (ExoN) activity of the viral nucleoprotein (NP) resulted in robust PKR activation in the absence of detectable levels of dsRNA, which was associated with severely restricted virus multiplication that was alleviated in the absence of PKR. However, pharmacological inhibition of PKR activation resulted in reduced levels of LCMV multiplication. These findings uncovered a complex role of the PKR pathway in LCMV-infected cells involving both pro-and antiviral activities.
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Affiliation(s)
- Haydar Witwit
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037
| | - Roaa Khafaji
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037
| | - Arul Salaniwal
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037
| | - Arthur S. Kim
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037
| | - Beatrice Cubitt
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037
| | | | - Chengjin Ye
- Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Susan R Weiss
- Department of Microbiology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104
| | | | - Juan Carlos de la Torre
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037
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7
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AlGeffari MA, Mansour D, Ahmed-Farid O, Mohamed Yousef E, Mohamed SA, Moustafa MMA, Barakat H, Abd El Ghany K. Lactiplantibacillus plantarum and Saussurea costus as Therapeutic Agents against a Diabetic Rat Model-Approaches to Investigate Pharmacophore Modeling of Human IkB Kinase and Molecular Interaction with Dehydrocostus Lactone of Saussurea costus. Metabolites 2023; 13:764. [PMID: 37367922 DOI: 10.3390/metabo13060764] [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: 02/17/2023] [Revised: 05/16/2023] [Accepted: 06/09/2023] [Indexed: 06/28/2023] Open
Abstract
Lactic acid bacteria is well-known as a vital strategy to alleviate or prevent diabetes. Similarly, the plant Saussurea costus (Falc) Lipsch is a preventive power against diabetes. Here, we aimed to determine whether lactic acid bacteria or Saussurea costus is more effective in treating a diabetic rat model in a comparative study manner. An in vivo experiment was conducted to test the therapeutic activity of Lactiplantibacillus plantarum (MW719476.1) and S. costus plants against an alloxan-induced diabetic rat model. Molecular, biochemical, and histological analyses were investigated to evaluate the therapeutic characteristics of different treatments. The high dose of S. costus revealed the best downregulated expression for the IKBKB, IKBKG, NfkB1, IL-17A, IL-6, IL-17F, IL-1β, TNF-α, TRAF6, and MAPK genes compared to Lactiplantibacillus plantarum and the control groups. The downregulation of IKBKB by S. costus could be attributed to dehydrocostus lactone as an active compound with proposed antidiabetic activity. So, we performed another pharmacophore modeling analysis to test the possible interaction between human IkB kinase beta protein and dehydrocostus lactone as an antidiabetic drug. Molecular docking and MD simulation data confirmed the interaction between human IkB kinase beta protein and dehydrocostus lactone as a possible drug. The target genes are important in regulating type 2 diabetes mellitus signaling, lipid and atherosclerosis signaling, NF-κB signaling, and IL-17 signaling pathways. In conclusion, the S. costus plant could be a promising source of novel therapeutic agents for treating diabetes and its complications. Dehydrocostus lactone caused the ameliorative effect of S. costus by its interaction with human IkB kinase beta protein. Further, future studies could be conducted to find the clinical efficacy of dehydrocostus lactone.
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Affiliation(s)
- Metab A AlGeffari
- Department of Family and Community Medicine, College of Medicine, Qassim University, Buraydah 51452, Saudi Arabia
- Diabetes Center, Medical City, Qassim University, Buraydah 51452, Saudi Arabia
| | - Dina Mansour
- Pharmacology Department, Medical Research and Clinical Studies Institute, National Research Centre, Giza 12622, Egypt
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Galala University, Attaka, Suez 43511, Egypt
| | - Omar Ahmed-Farid
- Department of Physiology, Egyptian Drug Authority, EL-Manial, Cairo 11511, Egypt
| | - Einas Mohamed Yousef
- Department of Histology and Cell Biology, Faculty of Medicine, Menoufia University, Shibin el Kom 32511, Egypt
| | - Shereen A Mohamed
- Department of Genetics and Genetic Engineering, Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt
| | - Mahmoud M A Moustafa
- Department of Genetics and Genetic Engineering, Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt
| | - Hassan Barakat
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
- Food Technology Department, Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt
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8
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Rawat P, Thakur S, Dogra S, Jaswal K, Dehury B, Mondal P. Diet-induced induction of hepatic Serine/Threonine Kinase STK38 triggers proinflammation and hepatic lipid accumulation. J Biol Chem 2023; 299:104678. [PMID: 37028764 DOI: 10.1016/j.jbc.2023.104678] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 03/24/2023] [Accepted: 03/26/2023] [Indexed: 04/07/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is one of the most common liver diseases worldwide. Although the involvement of chronic overnutrition, systemic inflammation, and insulin resistance in the development of NAFLD is well-established, however, the associations among these remain to be elucidated. Several studies have reported that chronic overnutrition, such as excessive consumption of fats (High Fat Diet, HFD) can cause insulin resistance and inflammation. However, the mechanisms by which HFD exerts inflammation and thereby promotes insulin resistance and intrahepatic fat accumulation remain poorly understood. Here, we show that HFD induces the expression of hepatic Serine/Threonine Kinase 38 (STK38), which further induces systemic inflammation leading to insulin resistance. Notably, Ectopic expression of STK38 in mouse liver leads to lean NAFLD phenotype with hepatic inflammation, insulin resistance, intrahepatic lipid accumulation, and hypertriglyceridemia in mice fed on a regular chow diet. Further, depletion of hepatic STK38 in HFD-fed mice remarkably reduces proinflammation, improves hepatic insulin sensitivity, and decreases hepatic fat accumulation. Mechanistically, two critical stimuli are elicited by STK38 action. For one stimulus, STK38 binds to Tank-Binding protein Kinase1 (TBK1) and induces TBK1 phosphorylation to promote NF-κβ nuclear translocation that mobilizes the release of pro-inflammatory cytokines and eventually leads to insulin resistance. The second, stimulus involves intrahepatic lipid accumulation by enhanced de novo lipogenesis via reducing the AMPK-ACC signaling axis. These findings identify STK38 as a novel nutrient-sensitive pro-inflammatory and lipogenic factor in maintaining hepatic energy homeostasis, and it provides a promising target for hepatic and immune health.
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9
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Wu YL, Pan LH, Yi ZJ, Zhang WF, Gong JP. c-Myb Dominates TBK1-Mediated Endotoxin Tolerance in Kupffer Cells by Negatively Regulating DTX4. J Immunol Res 2023; 2023:5990156. [PMID: 37032653 PMCID: PMC10081914 DOI: 10.1155/2023/5990156] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 01/11/2023] [Accepted: 02/14/2023] [Indexed: 04/03/2023] Open
Abstract
As a protective mechanism regulating excessive inflammation, endotoxin tolerance plays a vital role in regulating endotoxin shock. Kupffer cells are players in mediating endotoxin tolerance. Nonetheless, the regulatory mechanism regulating endotoxin tolerance is barely known. A nonclassical IKK kinase called TRAF-associated NF-κB activator (TANK)-binding kinase 1 (TBK1) can regulate inflammation. Here, we found that TBK1 is required for endotoxin tolerance in Kupffer cells. TBK1 plays a dominant role in regulating endotoxin tolerance by negatively regulating the induction of p100 processing. Deltex E3 ubiquitin ligase 4 (DTX4), a negative regulator of TBK1, can promote TBK1 K48-mediated ubiquitination and indirectly regulate endotoxin tolerance in Kupffer cells. We demonstrate that the c-Myb transcription factor could negatively regulate DTX4. Overexpression of c-Myb can be used to reduce the ubiquitination of TBK1 by reducing DTX4 transcription and to boost the anti-inflammatory effect of endotoxin tolerance. Thus, this study reveals a novel theory of TBK1-mediated endotoxin tolerance in Kupffer cells.
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Affiliation(s)
- Yi-Lin Wu
- Department of Hepatobiliary Surgery, Second Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Le-Han Pan
- Department of Hepatobiliary Surgery, Second Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Zhu-Jun Yi
- Department of Hepatobiliary Surgery, Second Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
- Department of Hepatobiliary Surgery, Chongqing University Three Gorges Hospital, Chongqing 404100, China
| | - Wen-Feng Zhang
- Department of Hepatobiliary Surgery, Second Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Jian-Ping Gong
- Department of Hepatobiliary Surgery, Second Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
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10
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Ruze R, Song J, Yin X, Chen Y, Xu R, Wang C, Zhao Y. Mechanisms of obesity- and diabetes mellitus-related pancreatic carcinogenesis: a comprehensive and systematic review. Signal Transduct Target Ther 2023; 8:139. [PMID: 36964133 PMCID: PMC10039087 DOI: 10.1038/s41392-023-01376-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 01/31/2023] [Accepted: 02/15/2023] [Indexed: 03/26/2023] Open
Abstract
Research on obesity- and diabetes mellitus (DM)-related carcinogenesis has expanded exponentially since these two diseases were recognized as important risk factors for cancers. The growing interest in this area is prominently actuated by the increasing obesity and DM prevalence, which is partially responsible for the slight but constant increase in pancreatic cancer (PC) occurrence. PC is a highly lethal malignancy characterized by its insidious symptoms, delayed diagnosis, and devastating prognosis. The intricate process of obesity and DM promoting pancreatic carcinogenesis involves their local impact on the pancreas and concurrent whole-body systemic changes that are suitable for cancer initiation. The main mechanisms involved in this process include the excessive accumulation of various nutrients and metabolites promoting carcinogenesis directly while also aggravating mutagenic and carcinogenic metabolic disorders by affecting multiple pathways. Detrimental alterations in gastrointestinal and sex hormone levels and microbiome dysfunction further compromise immunometabolic regulation and contribute to the establishment of an immunosuppressive tumor microenvironment (TME) for carcinogenesis, which can be exacerbated by several crucial pathophysiological processes and TME components, such as autophagy, endoplasmic reticulum stress, oxidative stress, epithelial-mesenchymal transition, and exosome secretion. This review provides a comprehensive and critical analysis of the immunometabolic mechanisms of obesity- and DM-related pancreatic carcinogenesis and dissects how metabolic disorders impair anticancer immunity and influence pathophysiological processes to favor cancer initiation.
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Affiliation(s)
- Rexiati Ruze
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100730, Beijing, China
- Key Laboratory of Research in Pancreatic Tumors, Chinese Academy of Medical Sciences, 100023, Beijing, China
- Chinese Academy of Medical Sciences and Peking Union Medical College, No. 9 Dongdan Santiao, Beijing, China
| | - Jianlu Song
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100730, Beijing, China
- Key Laboratory of Research in Pancreatic Tumors, Chinese Academy of Medical Sciences, 100023, Beijing, China
- Chinese Academy of Medical Sciences and Peking Union Medical College, No. 9 Dongdan Santiao, Beijing, China
| | - Xinpeng Yin
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100730, Beijing, China
- Key Laboratory of Research in Pancreatic Tumors, Chinese Academy of Medical Sciences, 100023, Beijing, China
- Chinese Academy of Medical Sciences and Peking Union Medical College, No. 9 Dongdan Santiao, Beijing, China
| | - Yuan Chen
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100730, Beijing, China
- Key Laboratory of Research in Pancreatic Tumors, Chinese Academy of Medical Sciences, 100023, Beijing, China
- Chinese Academy of Medical Sciences and Peking Union Medical College, No. 9 Dongdan Santiao, Beijing, China
| | - Ruiyuan Xu
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100730, Beijing, China
- Key Laboratory of Research in Pancreatic Tumors, Chinese Academy of Medical Sciences, 100023, Beijing, China
- Chinese Academy of Medical Sciences and Peking Union Medical College, No. 9 Dongdan Santiao, Beijing, China
| | - Chengcheng Wang
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100730, Beijing, China.
- Key Laboratory of Research in Pancreatic Tumors, Chinese Academy of Medical Sciences, 100023, Beijing, China.
| | - Yupei Zhao
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100730, Beijing, China.
- Key Laboratory of Research in Pancreatic Tumors, Chinese Academy of Medical Sciences, 100023, Beijing, China.
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11
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Uchida T, Akasaki Y, Sueishi T, Kurakazu I, Toya M, Kuwahara M, Hirose R, Hyodo Y, Tsushima H, Lotz MK, Nakashima Y. Promotion of Knee Cartilage Degradation by IκB Kinase ε in the Pathogenesis of Osteoarthritis in Human and Murine Models. Arthritis Rheumatol 2022; 75:937-949. [PMID: 36530063 DOI: 10.1002/art.42421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 11/06/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022]
Abstract
OBJECTIVE NF-κB signaling is an important modulator in osteoarthritis (OA), and IκB kinase ε (IKKε) regulates the NF-κB pathway. This study was undertaken to identify the functional involvement of IKKε in the pathogenesis of OA and the effectiveness of IKKε inhibition as a modulatory treatment. METHODS IKKε expression in normal and OA human knee joints was analyzed immunohistochemically. Gain- or loss-of-function experiments were performed using human chondrocytes. Furthermore, OA was surgically induced in mice, followed by intraarticular injection of BAY-985, an IKKε/TANK-binding kinase 1 inhibitor, into the left knee joint every 5 days for 8 weeks. Mice were subsequently examined for histologic features of cartilage damage and inflammation. RESULTS IKKε protein expression was increased in human OA cartilage. In vitro, expression levels of OA-related factors were down-regulated following knockdown of IKKε with the use of small interfering RNA in human OA chondrocytes or following treatment with BAY-985. Conversely, IKKε overexpression significantly increased the expression of OA-related catabolic mediators. In Western blot analysis of human chondrocytes, IKKε overexpression increased the phosphorylation of IκBα and p65. In vivo, intraarticular injection of BAY-985 into the knee joints of mice attenuated OA-related cartilage degradation and hyperalgesia via NF-κB signaling. CONCLUSION These results suggest that IKKε regulates cartilage degradation through a catabolic response mediated by NF-κB signaling, and this could represent a potential target for OA treatment. Furthermore, BAY-985 may serve as a major disease-modifying compound among the drugs developed for OA.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Martin K Lotz
- The Scripps Research Institute, La Jolla, California
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12
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Elsherbini AM, Alsamman AM, Elsherbiny NM, El-Sherbiny M, Ahmed R, Ebrahim HA, Bakkach J. Decoding Diabetes Biomarkers and Related Molecular Mechanisms by Using Machine Learning, Text Mining, and Gene Expression Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph192113890. [PMID: 36360783 PMCID: PMC9656783 DOI: 10.3390/ijerph192113890] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/18/2022] [Accepted: 10/18/2022] [Indexed: 05/13/2023]
Abstract
The molecular basis of diabetes mellitus is yet to be fully elucidated. We aimed to identify the most frequently reported and differential expressed genes (DEGs) in diabetes by using bioinformatics approaches. Text mining was used to screen 40,225 article abstracts from diabetes literature. These studies highlighted 5939 diabetes-related genes spread across 22 human chromosomes, with 112 genes mentioned in more than 50 studies. Among these genes, HNF4A, PPARA, VEGFA, TCF7L2, HLA-DRB1, PPARG, NOS3, KCNJ11, PRKAA2, and HNF1A were mentioned in more than 200 articles. These genes are correlated with the regulation of glycogen and polysaccharide, adipogenesis, AGE/RAGE, and macrophage differentiation. Three datasets (44 patients and 57 controls) were subjected to gene expression analysis. The analysis revealed 135 significant DEGs, of which CEACAM6, ENPP4, HDAC5, HPCAL1, PARVG, STYXL1, VPS28, ZBTB33, ZFP37 and CCDC58 were the top 10 DEGs. These genes were enriched in aerobic respiration, T-cell antigen receptor pathway, tricarboxylic acid metabolic process, vitamin D receptor pathway, toll-like receptor signaling, and endoplasmic reticulum (ER) unfolded protein response. The results of text mining and gene expression analyses used as attribute values for machine learning (ML) analysis. The decision tree, extra-tree regressor and random forest algorithms were used in ML analysis to identify unique markers that could be used as diabetes diagnosis tools. These algorithms produced prediction models with accuracy ranges from 0.6364 to 0.88 and overall confidence interval (CI) of 95%. There were 39 biomarkers that could distinguish diabetic and non-diabetic patients, 12 of which were repeated multiple times. The majority of these genes are associated with stress response, signalling regulation, locomotion, cell motility, growth, and muscle adaptation. Machine learning algorithms highlighted the use of the HLA-DQB1 gene as a biomarker for diabetes early detection. Our data mining and gene expression analysis have provided useful information about potential biomarkers in diabetes.
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Affiliation(s)
- Amira M. Elsherbini
- Department of Oral Biology, Faculty of Dentistry, Mansoura University, Mansoura 35116, Egypt
- Correspondence:
| | - Alsamman M. Alsamman
- Agricultural Genetic Engineering Research Institute, Agricultural Research Center, Giza 12619, Egypt
| | - Nehal M. Elsherbiny
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Tabuk, Tabuk 71491, Saudi Arabia
- Department of Biochemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35116, Egypt
| | - Mohamed El-Sherbiny
- Department of Basic Medical Sciences, College of Medicine, AlMaarefa University, Riyadh 71666, Saudi Arabia
- Department of Anatomy, Mansoura Faculty of Medicine, Mansoura University, Mansoura 35116, Egypt
| | - Rehab Ahmed
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, University of Tabuk, Tabuk 71491, Saudi Arabia
- Department of Pharmaceutics, Faculty of Pharmacy, University of Khartoum, Khartoum 11111, Sudan
| | - Hasnaa Ali Ebrahim
- Department of Basic Medical Sciences, College of Medicine, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Joaira Bakkach
- Biomedical Genomics and Oncogenetics Research Laboratory, Faculty of Sciences and Techniques of Tangier, Abdelmalek Essaâdi University Morocco, Tétouan 93000, Morocco
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13
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Córdoba-David G, García-Giménez J, Cardoso Castelo-Branco R, Carrasco S, Cannata P, Ortiz A, Ramos AM. Crosstalk between TBK1/IKKε and the type I interferon pathway contributes to tubulointerstitial inflammation and kidney tubular injury. Front Pharmacol 2022; 13:987979. [PMID: 36386242 PMCID: PMC9647636 DOI: 10.3389/fphar.2022.987979] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 08/22/2022] [Indexed: 09/01/2023] Open
Abstract
The type I interferon (TI-IFN) pathway regulates innate immunity, inflammation, and apoptosis during infection. However, the contribution of the TI-IFN pathway or upstream signaling pathways to tubular injury in kidney disease is poorly understood. Upon observing evidence of activation of upstream regulators of the TI-IFN pathway in a transcriptomics analysis of murine kidney tubulointerstitial injury, we have now addressed the impact of the TI-IFN and upstream signaling pathways on kidney tubulointerstitial injury. In cultured tubular cells and kidney tissue, IFNα/β binding to IFNAR activated the TI-IFN pathway and recruited antiviral interferon-stimulated genes (ISG) and NF-κB-associated proinflammatory responses. TWEAK and lipopolysaccharide (LPS) signaled through TBK1/IKKε and IRF3 to activate both ISGs and NF-κB. In addition, TWEAK recruited TLR4 to stimulate TBK1/IKKε-dependent ISG and inflammatory responses. Dual pharmacological inhibition of TBK1/IKKε with amlexanox decreased TWEAK- or LPS-induced ISG and cytokine responses, as well as cell death induced by a complex inflammatory milieu that included TWEAK. TBK1 or IRF3 siRNA prevented the TWEAK-induced ISG and inflammatory gene expression while IKKε siRNA did not. In vivo, kidney IFNAR and IFNβ were increased in murine LPS and folic acid nephrotoxicity while IFNAR was increased in human kidney biopsies with tubulointerstitial damage. Inhibition of TBK1/IKKε with amlexanox or IFNAR neutralization decreased TI-IFN pathway activation and protected from kidney injury induced by folic acid or LPS. In conclusion, TI-IFNs, TWEAK, and LPS engage interrelated proinflammatory and antiviral responses in tubular cells. Moreover, inhibition of TBK1/IKKε with amlexanox, and IFNAR targeting, may protect from tubulointerstitial kidney injury.
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Affiliation(s)
- Gina Córdoba-David
- Department of Nephrology and Hypertension, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Madrid, Spain
| | - Jorge García-Giménez
- Department of Nephrology and Hypertension, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Madrid, Spain
| | | | - Susana Carrasco
- Department of Nephrology and Hypertension, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Madrid, Spain
- RICORS 2040, Madrid, Spain
| | - Pablo Cannata
- Department of Pathology, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Madrid, Spain
| | - Alberto Ortiz
- Department of Nephrology and Hypertension, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Madrid, Spain
- RICORS 2040, Madrid, Spain
- Department of Medicine, Universidad Autónoma de Madrid, Madrid, Spain
| | - Adrián M. Ramos
- Department of Nephrology and Hypertension, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Madrid, Spain
- RICORS 2040, Madrid, Spain
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14
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Kron NS. In search of the Aplysia immunome: an in silico study. BMC Genomics 2022; 23:543. [PMID: 35906538 PMCID: PMC9334734 DOI: 10.1186/s12864-022-08780-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/20/2022] [Indexed: 01/21/2023] Open
Abstract
The immune repertoires of mollusks beyond commercially important organisms such as the pacific oyster Crassostrea gigas or vectors for human pathogens like the bloodfluke planorb Biomphalaria glabrata are understudied. Despite being an important model for neural aging and the role of inflammation in neuropathic pain, the immune repertoire of Aplysia californica is poorly understood. Recent discovery of a neurotropic nidovirus in Aplysia has highlighted the need for a better understanding of the Aplysia immunome. To address this gap in the literature, the Aplysia reference genome was mined using InterProScan and OrthoFinder for putative immune genes. The Aplysia genome encodes orthologs of all critical components of the classical Toll-like receptor (TLR) signaling pathway. The presence of many more TLRs and TLR associated adapters than known from vertebrates suggest yet uncharacterized, novel TLR associated signaling pathways. Aplysia also retains many nucleotide receptors and antiviral effectors known to play a key role in viral defense in vertebrates. However, the absence of key antiviral signaling adapters MAVS and STING in the Aplysia genome suggests divergence from vertebrates and bivalves in these pathways. The resulting immune gene set of this in silico study provides a basis for interpretation of future immune studies in this important model organism.
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Affiliation(s)
- Nicholas S. Kron
- grid.26790.3a0000 0004 1936 8606Department of Marine Biology and Ecology, Rosenstiel School of Marine and Atmospheric Science, University of Miami, 4600 Rickenbacker Cswy, Miami, FL 33149 USA
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15
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Pan L, Yang L, Yi Z, Zhang W, Gong J. TBK1 participates in glutaminolysis by mediating the phosphorylation of RIPK3 to promote endotoxin tolerance. Mol Immunol 2022; 147:101-114. [DOI: 10.1016/j.molimm.2022.04.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 03/29/2022] [Accepted: 04/20/2022] [Indexed: 12/12/2022]
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16
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Xiao QA, He Q, Li L, Song Y, Chen YR, Zeng J, Xia X. Role of IKKε in the Metabolic Diseases: Physiology, Pathophysiology, and Pharmacology. Front Pharmacol 2022; 13:888588. [PMID: 35662709 PMCID: PMC9162805 DOI: 10.3389/fphar.2022.888588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 04/19/2022] [Indexed: 11/13/2022] Open
Abstract
IKKε (inhibitor of nuclear factor kappa-B kinase ε) is a member of the noncanonical NF-κB pathway. It participates in the inflammatory response and innate immunity against bacteria. In recent decades, IKKε has been closely associated with metabolic regulation. Inhibition of the IKKε pathway can improve fat deposition in the liver, reduce subcutaneous fat inflammation, and improve liver gluconeogenesis in obesity. IKKε is expected to be a new therapeutic target for metabolic diseases such as nonalcoholic fatty liver disease, diabetes, and obesity. Herein, we summarize the structural characterization, physiological function, and pathological role of IKKε in metabolic diseases and small molecule inhibitors of IKKε.
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Affiliation(s)
- Qing-Ao Xiao
- Department of Endocrinology, The People's Hospital of China Three Gorges University/the First People's Hospital of Yichang, Yichang, China.,Third-grade Pharmacological Laboratory on Traditional Chinese MedicineState Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, China
| | - Qian He
- Department of Endocrinology, The People's Hospital of China Three Gorges University/the First People's Hospital of Yichang, Yichang, China.,National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Lun Li
- The Institute of Infection and Inflammation, China Three Gorges University, Yichang, China.,Department of Microbiology and Immunology, Medical College, China Three Gorges University, Yichang, China
| | - Yinhong Song
- The Institute of Infection and Inflammation, China Three Gorges University, Yichang, China.,Department of Microbiology and Immunology, Medical College, China Three Gorges University, Yichang, China
| | - Yue-Ran Chen
- Third-grade Pharmacological Laboratory on Traditional Chinese MedicineState Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, China.,Department of Physiology and Pathophysiology, Medical College, China Three Gorges University, Yichang, China
| | - Jun Zeng
- Department of Endocrinology, The People's Hospital of China Three Gorges University/the First People's Hospital of Yichang, Yichang, China
| | - Xuan Xia
- Third-grade Pharmacological Laboratory on Traditional Chinese MedicineState Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, China.,Department of Physiology and Pathophysiology, Medical College, China Three Gorges University, Yichang, China
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17
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Bagga T, Tulsian NK, Mok YK, Kini RM, Sivaraman J. Mapping of molecular interactions between human E3 ligase TRIM69 and Dengue virus NS3 protease using hydrogen-deuterium exchange mass spectrometry. Cell Mol Life Sci 2022; 79:233. [PMID: 35397701 PMCID: PMC11072344 DOI: 10.1007/s00018-022-04245-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 03/04/2022] [Accepted: 03/10/2022] [Indexed: 11/03/2022]
Abstract
Tripartite motif (TRIM) E3 ligases target specific substrates, including viral proteins, for proteasomal degradation, and are thus essential regulators of the innate antiviral response. TRIM69 ubiquitinates the non-structural NS3 protein of Dengue virus for its degradation by the host machinery. This antiviral strategy abrogates the immunosuppression mediated by the NS2B-NS3 protease complex. To understand how this host-driven antiviral response against Dengue virus, we sought to define the mode of interaction between human TRIM69 and Dengue NS2B-NS3 and the subsequent polyubiquitination of the protease by the E3 ligase. We show that NS2B-NS3Δpro is sufficient as a substrate for ubiquitination by TRIM69 using ELISA and in vitro assays. Using hydrogen-deuterium exchange mass spectrometry (HDXMS), we mapped the interface of the interaction between TRIM69 and NS2B-NS3Δpro, and propose a rationale for the binding and subsequent ubiquitination process. Furthermore, through sequence analysis, we showed that the regions targeted by TRIM69 on the DENV-2 NS3 protease (NS3Δpro) are well conserved across DENV serotypes and other flaviviruses, including Zika virus, West Nile virus, and Japanese encephalitis virus. Our results show the direct interactions of TRIM69 with viral proteins, provide mechanistic insights at a molecular level, and highlight the functional relevance of TRIM69 interacting with the Dengue viral protein. Collectively, our findings suggest that TRIM69 may act as a pan-antiflaviviral restriction factor.
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Affiliation(s)
- Tanaya Bagga
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore, 117543, Singapore
| | - Nikhil Kumar Tulsian
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore, 117543, Singapore.
- Department of Biochemistry, National University of Singapore, 28 Medical Drive, Singapore, 117546, Singapore.
| | - Yu Keung Mok
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore, 117543, Singapore
| | - R Manjunatha Kini
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore, 117543, Singapore
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 16 Medical Drive, Singapore, 117600, Singapore
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, 1101 E Marshall Street, Richmond, VA, 23298, USA
| | - J Sivaraman
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore, 117543, Singapore.
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18
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Runde AP, Mack R, S J PB, Zhang J. The role of TBK1 in cancer pathogenesis and anticancer immunity. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2022; 41:135. [PMID: 35395857 PMCID: PMC8994244 DOI: 10.1186/s13046-022-02352-y] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 03/29/2022] [Indexed: 02/07/2023]
Abstract
The TANK-binding kinase 1 (TBK1) is a serine/threonine kinase belonging to the non-canonical inhibitor of nuclear factor-κB (IκB) kinase (IKK) family. TBK1 can be activated by pathogen-associated molecular patterns (PAMPs), inflammatory cytokines, and oncogenic kinases, including activated K-RAS/N-RAS mutants. TBK1 primarily mediates IRF3/7 activation and NF-κB signaling to regulate inflammatory cytokine production and the activation of innate immunity. TBK1 is also involved in the regulation of several other cellular activities, including autophagy, mitochondrial metabolism, and cellular proliferation. Although TBK1 mutations have not been reported in human cancers, aberrant TBK1 activation has been implicated in the oncogenesis of several types of cancer, including leukemia and solid tumors with KRAS-activating mutations. As such, TBK1 has been proposed to be a feasible target for pharmacological treatment of these types of cancer. Studies suggest that TBK1 inhibition suppresses cancer development not only by directly suppressing the proliferation and survival of cancer cells but also by activating antitumor T-cell immunity. Several small molecule inhibitors of TBK1 have been identified and interrogated. However, to this point, only momelotinib (MMB)/CYT387 has been evaluated as a cancer therapy in clinical trials, while amlexanox (AMX) has been evaluated clinically for treatment of type II diabetes, nonalcoholic fatty liver disease, and obesity. In this review, we summarize advances in research into TBK1 signaling pathways and regulation, as well as recent studies on TBK1 in cancer pathogenesis. We also discuss the potential molecular mechanisms of targeting TBK1 for cancer treatment. We hope that our effort can help to stimulate the development of novel strategies for targeting TBK1 signaling in future approaches to cancer therapy.
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Affiliation(s)
- Austin P Runde
- Department of Cancer Biology, Oncology Institute, Cardinal Bernardin Cancer Center, Loyola University Medical Center, Maywood, IL, 60153, USA
| | - Ryan Mack
- Department of Cancer Biology, Oncology Institute, Cardinal Bernardin Cancer Center, Loyola University Medical Center, Maywood, IL, 60153, USA
| | - Peter Breslin S J
- Department of Cancer Biology, Oncology Institute, Cardinal Bernardin Cancer Center, Loyola University Medical Center, Maywood, IL, 60153, USA.,Departments of Molecular/Cellular Physiology and Biology, Loyola University Medical Center and Loyola University Chicago, Chicago, IL, 60660, USA
| | - Jiwang Zhang
- Department of Cancer Biology, Oncology Institute, Cardinal Bernardin Cancer Center, Loyola University Medical Center, Maywood, IL, 60153, USA. .,Departments of Pathology and Radiation Oncology, Loyola University Medical Center, Maywood, IL, 60153, USA.
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19
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Al Hamrashdi M, Brady G. Regulation of IRF3 activation in Human Antiviral Signalling Pathways. Biochem Pharmacol 2022; 200:115026. [PMID: 35367198 DOI: 10.1016/j.bcp.2022.115026] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/24/2022] [Accepted: 03/25/2022] [Indexed: 12/24/2022]
Abstract
The interferon regulatory factor (IRF) family of transcription factors play a vital role in the human innate antiviral immune responses with production of interferons (IFNs) as a hallmark outcome of activation. In recent years, IRF3 has been considered a principal early regulator of type I IFNs (TI-IFNs) directly downstream of intracellular virus sensing. Despite decades of research on IRF-activating pathways, many questions remain on the regulation of IRF3 activation. The kinases IκB kinase epsilon (IKKε) and TANK-binding kinase-1 (TBK1) and the scaffold proteins TRAF family member-associated NF-kappa-B activator (TANK), NF-kappa-B-activating kinase-associated protein 1 (NAP1) and TANK-binding kinase 1-binding protein 1 (TBKBP1)/similar to NAP1 TBK1 adaptor (SINTBAD) are believed to be core components of an IRF3-activation complex yet their contextual involvement and complex composition are still unclear. This review will give an overview of antiviral signaling pathways leading to the activation of IRF3 and discuss recent developments in our understanding of its proximal regulation.
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Affiliation(s)
- Mariya Al Hamrashdi
- Trinity Translational Medicine Institute, Trinity College Dublin, St. James' Hospital Campus, Dublin, Ireland.
| | - Gareth Brady
- Trinity Translational Medicine Institute, Trinity College Dublin, St. James' Hospital Campus, Dublin, Ireland.
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20
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Ho JY, Lu HY, Cheng HH, Kuo YC, Lee YLA, Cheng CH. UBE2S activates NF-κB signaling by binding with IκBα and promotes metastasis of lung adenocarcinoma cells. Cell Oncol (Dordr) 2021; 44:1325-1338. [PMID: 34582005 DOI: 10.1007/s13402-021-00639-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 09/17/2021] [Indexed: 10/20/2022] Open
Abstract
PURPOSE Nuclear factor (NF)-κB signaling in cancer cells has been reported to be involved in tumorigenesis. Phosphorylation and degradation of inhibitor of NF-κBα (IκBα) is a canonical pathway of NF-κB signaling. Here, we aimed to identify and characterize noncanonical activation of NF-κB signaling by ubiquitin-conjugating enzyme E2S (UBE2S) in lung adenocarcinoma cells. METHODS TCGA and the Human Atlas Protein Database were used to analyze the survival rate of lung adenocarcinoma patients in conjunction with UBE2S expression. In addition, PC9, H460, H441 and A549 lung adenocarcinoma cells were used in this study. PC9 and H460 cells were selected for further analysis because they expressed different UBE2S protein levels. Specific IKK inhibitors, PS1145 and SC514, were used to assess IκBα phosphorylation. Western blot analysis was used to assess protein levels in PC9 and H460 cells. A scratch wound-healing assay was used to analyze the migrative abilities of PC9 and H460 cells. Overexpression and knockdown of UBE2S in H460 and PC9 cells were used to analyze their effects on downstream protein levels. Immunoprecipitation, immunofluorescent staining, glutathione S transferase (GST) pull-down and in vitro binding assays were used to analyze the interaction between UBE2S and IκBα. A luciferase assay was used to analyze activation of NF-κB signaling regulated by UBE2S. An in vivo zebrafish xenograft model was used to assess metastasis of PC9 cells regulated by UBE2S. RESULTS We found that UBE2S expression in lung adenocarcinoma patients was negatively related to survival rate. The protein level of UBE2S was higher in PC9 cells than in H460 cells, which was opposite to that observed for IκBα. PC9 cells showed a higher UBE2S expression and migrative ability than H460 cells. Phosphorylation of IκBα was not changed by treatment with the IKK-specific inhibitors PS1145 and SC514 in PC9 and H460 cells. Overexpression and knockdown of UBE2S in H460 and PC9 cells revealed that the protein levels of IκBα were inversely regulated. Immunoprecipitation, immunofluorescent staining, GST pull-down and in vitro binding assays revealed direct binding of UBE2S with IκBα. Nuclear P65 protein levels and luciferase assays showed that NF-κB signaling was regulated by UBE2S. The expression of epithelial-to-mesenchymal (EMT) markers and the migrative ability of lung adenocarcinoma cells were also regulated by UBE2S. A zebrafish xenograft tumor model showed a reduction in the metastasis of PC9 cells that was induced by UBE2S knockdown. CONCLUSIONS Higher UBE2S expression in lung adenocarcinomas may lead to increased binding with IκBα to activate NF-κB signaling and promote adenocarcinoma cell metastasis. UBE2S may serve as a potential therapeutic target for lung adenocarcinomas.
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Affiliation(s)
- Jhih-Yun Ho
- Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, 250 Wuxing Street, Taipei, 11031, Taiwan
- Graduate Institute of Medical Science, College of Medicine, Taipei Medical University, 11031, Taipei, Taiwan
| | - Hsin-Ying Lu
- Division of Cardiovascular Surgery, Department of Surgery, Wan Fang Hospital, Taipei Medical University, 11031, Taipei, Taiwan
- Department of Physical Medicine and Rehabilitation, Wan Fang Hospital, Taipei Medical University, 11031, Taipei, Taiwan
- Taipei Heart Institute, Taipei Medical University, 11031, Taipei, Taiwan
| | - Hsing-Hsien Cheng
- Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, 250 Wuxing Street, Taipei, 11031, Taiwan
- Graduate Institute of Medical Science, College of Medicine, Taipei Medical University, 11031, Taipei, Taiwan
| | - Yu-Chieh Kuo
- Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, 250 Wuxing Street, Taipei, 11031, Taiwan
| | - Yu-Lin Amy Lee
- Departments of Medicine and Pediatrics, Duke University Hospital, Durham, NC, 27704, USA
| | - Chia-Hsiung Cheng
- Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, 250 Wuxing Street, Taipei, 11031, Taiwan.
- Graduate Institute of Medical Science, College of Medicine, Taipei Medical University, 11031, Taipei, Taiwan.
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, 11031, Taipei, Taiwan.
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21
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Silke J, O’Reilly LA. NF-κB and Pancreatic Cancer; Chapter and Verse. Cancers (Basel) 2021; 13:4510. [PMID: 34572737 PMCID: PMC8469693 DOI: 10.3390/cancers13184510] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 08/29/2021] [Accepted: 08/30/2021] [Indexed: 02/07/2023] Open
Abstract
Pancreatic Ductal Adenocarcinoma (PDAC) is one of the world's most lethal cancers. An increase in occurrence, coupled with, presently limited treatment options, necessitates the pursuit of new therapeutic approaches. Many human cancers, including PDAC are initiated by unresolved inflammation. The transcription factor NF-κB coordinates many signals that drive cellular activation and proliferation during immunity but also those involved in inflammation and autophagy which may instigate tumorigenesis. It is not surprising therefore, that activation of canonical and non-canonical NF-κB pathways is increasingly recognized as an important driver of pancreatic injury, progression to tumorigenesis and drug resistance. Paradoxically, NF-κB dysregulation has also been shown to inhibit pancreatic inflammation and pancreatic cancer, depending on the context. A pro-oncogenic or pro-suppressive role for individual components of the NF-κB pathway appears to be cell type, microenvironment and even stage dependent. This review provides an outline of NF-κB signaling, focusing on the role of the various NF-κB family members in the evolving inflammatory PDAC microenvironment. Finally, we discuss pharmacological control of NF-κB to curb inflammation, focussing on novel anti-cancer agents which reinstate the process of cancer cell death, the Smac mimetics and their pre-clinical and early clinical trials.
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Affiliation(s)
- John Silke
- Inflammation Division, Walter and Eliza Hall Institute of Medical Research (WEHI), Parkville, VIC 3052, Australia;
- Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Lorraine Ann O’Reilly
- Inflammation Division, Walter and Eliza Hall Institute of Medical Research (WEHI), Parkville, VIC 3052, Australia;
- Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
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22
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Serafim RAM, Elkins JM, Zuercher WJ, Laufer SA, Gehringer M. Chemical Probes for Understudied Kinases: Challenges and Opportunities. J Med Chem 2021; 65:1132-1170. [PMID: 34477374 DOI: 10.1021/acs.jmedchem.1c00980] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Over 20 years after the approval of the first-in-class protein kinase inhibitor imatinib, the biological function of a significant fraction of the human kinome remains poorly understood while most research continues to be focused on few well-validated targets. Given the strong genetic evidence for involvement of many kinases in health and disease, the understudied fraction of the kinome holds a large and unexplored potential for future therapies. Specific chemical probes are indispensable tools to interrogate biology enabling proper preclinical validation of novel kinase targets. In this Perspective, we highlight recent case studies illustrating the development of high-quality chemical probes for less-studied kinases and their application in target validation. We spotlight emerging techniques and approaches employed in the generation of chemical probes for protein kinases and beyond and discuss the associated challenges and opportunities.
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Affiliation(s)
- Ricardo A M Serafim
- Department of Pharmaceutical/Medicinal Chemistry, Eberhard Karls University Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
| | - Jonathan M Elkins
- Centre for Medicines Discovery, University of Oxford, Old Road Campus Research Building, Roosevelt Drive, Oxford OX3 7DQ, United Kingdom
| | - William J Zuercher
- Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Stefan A Laufer
- Department of Pharmaceutical/Medicinal Chemistry, Eberhard Karls University Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany.,Cluster of Excellence iFIT (EXC 2180) "Image-Guided & Functionally Instructed Tumor Therapies", University of Tübingen, 72076 Tübingen, Germany.,Tübingen Center for Academic Drug Discovery, Auf der Morgenstelle 8, 72076 Tübingen, Germany
| | - Matthias Gehringer
- Department of Pharmaceutical/Medicinal Chemistry, Eberhard Karls University Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany.,Cluster of Excellence iFIT (EXC 2180) "Image-Guided & Functionally Instructed Tumor Therapies", University of Tübingen, 72076 Tübingen, Germany
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23
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Yu H, Bruneau RC, Brennan G, Rothenburg S. Battle Royale: Innate Recognition of Poxviruses and Viral Immune Evasion. Biomedicines 2021; 9:biomedicines9070765. [PMID: 34356829 PMCID: PMC8301327 DOI: 10.3390/biomedicines9070765] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/25/2021] [Accepted: 06/26/2021] [Indexed: 12/17/2022] Open
Abstract
Host pattern recognition receptors (PRRs) sense pathogen-associated molecular patterns (PAMPs), which are molecular signatures shared by different pathogens. Recognition of PAMPs by PRRs initiate innate immune responses via diverse signaling pathways. Over recent decades, advances in our knowledge of innate immune sensing have enhanced our understanding of the host immune response to poxviruses. Multiple PRR families have been implicated in poxvirus detection, mediating the initiation of signaling cascades, activation of transcription factors, and, ultimately, the expression of antiviral effectors. To counteract the host immune defense, poxviruses have evolved a variety of immunomodulators that have diverse strategies to disrupt or circumvent host antiviral responses triggered by PRRs. These interactions influence the outcomes of poxvirus infections. This review focuses on our current knowledge of the roles of PRRs in the recognition of poxviruses, their elicited antiviral effector functions, and how poxviral immunomodulators antagonize PRR-mediated host immune responses.
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24
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Mahmoudvand S, Shokri S. Interactions between SARS coronavirus 2 papain-like protease and immune system: A potential drug target for the treatment of COVID-19. Scand J Immunol 2021; 94:e13044. [PMID: 33872387 PMCID: PMC8250271 DOI: 10.1111/sji.13044] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 03/24/2021] [Accepted: 04/11/2021] [Indexed: 12/01/2022]
Abstract
Coronaviruses (CoVs) are a large family of respiratory viruses which can cause mild to moderate upper respiratory tract infections. Recently, new coronavirus named as Severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) has been identified which is a major threat to public health. Innate immune responses play a vital role in a host's defence against viruses. Interestingly, CoVs have evolved elaborate strategies to evade the complex system of sensors and signalling molecules to suppress host immunity. SARS‐CoV‐2 papain‐like protease (PLpro), as an important coronavirus enzyme, regulates viral spread and innate immune responses. SCoV‐2 PLpro is multifunctional enzyme with deubiquitinating (DUB) and deISGylating activity. The PLpro can interact with key regulators in signalling pathways such as STING, NF‐κB, cytokine production, MAPK and TGF‐β and hijack those to block the immune responses. Therefore, the PLpro can be as an important target for the treatment of COVID‐19. Until now, several drugs or compounds have been identified that can inhibit PLpro activity. Here we discuss about the dysregulation effects of PLpro on immune system and drugs that have potential inhibitors for SCoV‐2 PLpro.
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Affiliation(s)
- Shahab Mahmoudvand
- Student Research CommitteeAhvaz Jundishapur University of Medical SciencesAhvazIran
- Department of VirologySchool of MedicineAhvaz Jundishapur University of Medical SciencesAhvazIran
| | - Somayeh Shokri
- Student Research CommitteeAhvaz Jundishapur University of Medical SciencesAhvazIran
- Department of VirologySchool of MedicineAhvaz Jundishapur University of Medical SciencesAhvazIran
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25
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OTUD7B suppresses Smac mimetic-induced lung cancer cell invasion and migration via deubiquitinating TRAF3. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2020; 39:244. [PMID: 33198776 PMCID: PMC7667862 DOI: 10.1186/s13046-020-01751-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 10/26/2020] [Indexed: 12/25/2022]
Abstract
Background Smac mimetics are a type of drug that can induce apoptosis by antagonizing IAP family members in cancer treatment. However, a recent study showed that Smac mimetics can trigger cell invasion and migration in cancer cells by activating the NF-κB pathway. Methods We assessed lung cancer cell elongation, invasion and migration under treatment with the Smac mimetic LCL161. Functional analyses (in vitro and in vivo) were performed to detect the contribution of NIK and OTUD7B to LCL161-induced cell invasion and migration. The role of OTUD7B in regulation of the TRAF3/NIK/NF-κB pathway under LCL161 treatment was analysed by immunoblotting, immunoprecipitation, luciferase and ubiquitin assays, shRNA silencing and plasmid overexpression. Expression levels of OTUD7B, NIK and TRAF3 in tissue samples from lung cancer patients were examined by immunohistochemistry. Results We found that LCL161 stimulates lung cancer cell elongation, invasion and migration at non-toxic concentrations. Mechanistically, LCL161 results in NIK accumulation and activates the non-canonical rather than the canonical NF-κB pathway to enhance the transcription of target genes, such as IL-2 and MMP-9. Importantly, knockdown of NIK dramatically suppresses LCL161-induced cell invasion and migration by reducing the proteolytic processing of p100 to p52 and target gene transcription. Interestingly, we discovered that OTUD7B increases TRAF3 and decreases NIK to inhibit the non-canonical NF-κB pathway and that overexpression of OTUD7B suppresses LCL161-induced cell invasion and migration. Notably, OTUD7B directly binds to TRAF3 rather than to NIK and deubiquitinates TRAF3, thereby inhibiting TRAF3 proteolysis and preventing NIK accumulation and NF-κB pathway activation. Furthermore, the OTU domain of OTUD7B is required for the inhibition of LCL161-induced cell invasion and migration, as demonstrated by transfection of the C194S/H358R(CH) mutant OTUD7B. Finally, we investigated whether OTUD7B inhibits LCL161-induced lung cancer cell intrapulmonary metastasis in vivo, and our analysis of clinical samples was consistent with the above findings. Conclusions Our study highlights the importance of OTUD7B in the suppression of LCL161-induced lung cancer cell invasion and migration, and the results are meaningful for selecting lung cancer patients suitable for LCL161 treatment. Supplementary Information The online version contains supplementary material available at 10.1186/s13046-020-01751-3.
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26
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Jia YF, Jeeva S, Xu J, Heppelmann CJ, Jang JS, Slama MQ, Tapadar S, Oyelere AK, Kang SM, Matveyenko AV, Peterson QP, Shin CH. TBK1 regulates regeneration of pancreatic β-cells. Sci Rep 2020; 10:19374. [PMID: 33168920 PMCID: PMC7653919 DOI: 10.1038/s41598-020-76600-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Accepted: 10/22/2020] [Indexed: 12/11/2022] Open
Abstract
Small-molecule inhibitors of non-canonical IκB kinases TANK-binding kinase 1 (TBK1) and IκB kinase ε (IKKε) have shown to stimulate β-cell regeneration in multiple species. Here we demonstrate that TBK1 is predominantly expressed in β-cells in mammalian islets. Proteomic and transcriptome analyses revealed that genetic silencing of TBK1 increased expression of proteins and genes essential for cell proliferation in INS-1 832/13 rat β-cells. Conversely, TBK1 overexpression decreased sensitivity of β-cells to the elevation of cyclic AMP (cAMP) levels and reduced proliferation of β-cells in a manner dependent on the activity of cAMP-hydrolyzing phosphodiesterase 3 (PDE3). While the mitogenic effect of (E)3-(3-phenylbenzo[c]isoxazol-5-yl)acrylic acid (PIAA) is derived from inhibition of TBK1, PIAA augmented glucose-stimulated insulin secretion (GSIS) and expression of β-cell differentiation and proliferation markers in human embryonic stem cell (hESC)-derived β-cells and human islets. TBK1 expression was increased in β-cells upon diabetogenic insults, including in human type 2 diabetic islets. PIAA enhanced expression of cell cycle control molecules and β-cell differentiation markers upon diabetogenic challenges, and accelerated restoration of functional β-cells in streptozotocin (STZ)-induced diabetic mice. Altogether, these data suggest the critical function of TBK1 as a β-cell autonomous replication barrier and present PIAA as a valid therapeutic strategy augmenting functional β-cells.
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Affiliation(s)
- Yun-Fang Jia
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, 55905, USA
| | - Subbiah Jeeva
- Institute for Biomedical Sciences, Georgia State University, Atlanta, GA, 30303, USA
| | - Jin Xu
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, 91125, USA
| | | | - Jin Sung Jang
- Department of Lab Medicine and Pathology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Michael Q Slama
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA
| | - Subhasish Tapadar
- School of Chemistry and Biochemistry and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Adegboyega K Oyelere
- School of Chemistry and Biochemistry and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Sang-Moo Kang
- Institute for Biomedical Sciences, Georgia State University, Atlanta, GA, 30303, USA
| | - Aleksey V Matveyenko
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA.,Center for Regenerative Medicine, Mayo Clinic, Rochester, MN, 55905, USA
| | - Quinn P Peterson
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA.,Center for Regenerative Medicine, Mayo Clinic, Rochester, MN, 55905, USA
| | - Chong Hyun Shin
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, 55905, USA. .,Institute for Biomedical Sciences, Georgia State University, Atlanta, GA, 30303, USA.
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Revach OY, Liu S, Jenkins RW. Targeting TANK-binding kinase 1 (TBK1) in cancer. Expert Opin Ther Targets 2020; 24:1065-1078. [PMID: 32962465 PMCID: PMC7644630 DOI: 10.1080/14728222.2020.1826929] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 09/18/2020] [Indexed: 12/16/2022]
Abstract
INTRODUCTION TANK-binding kinase 1 (TBK1) is a Ser/Thr kinase with a central role in coordinating the cellular response to invading pathogens and regulating key inflammatory signaling cascades. While intact TBK1 signaling is required for successful anti-viral signaling, dysregulated TBK1 signaling has been linked to a variety of pathophysiologic conditions, including cancer. Several lines of evidence support a role for TBK1 in cancer pathogenesis, but the specific roles and regulation of TBK1 remain incompletely understood. A key challenge is the diversity of cellular processes that are regulated by TBK1, including inflammation, cell cycle, autophagy, energy homeostasis, and cell death. Nevertheless, evidence from pre-clinical cancer models suggests that targeting TBK1 may be an effective strategy for anti-cancer therapy in specific settings. AREAS COVERED This review provides an overview of the roles and regulation of TBK1 with a focus on cancer pathogenesis and drug targeting of TBK1 as an anti-cancer strategy. Relevant literature was derived from a PubMed search encompassing studies from 1999 to 2020. EXPERT OPINION TBK1 is emerging as a potential target for anti-cancer therapy. Inhibition of TBK1 alone may be insufficient to restrain the growth of most cancers; hence, combination strategies will likely be necessary. Improved understanding of tumor-intrinsic and tumor-extrinsic TBK1 signaling will inform novel therapeutic strategies.
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Affiliation(s)
- Or-yam Revach
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, USA
- Laboratory of Systems Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Shuming Liu
- Laboratory of Systems Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Russell W. Jenkins
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, USA
- Laboratory of Systems Pharmacology, Harvard Medical School, Boston, MA, USA
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28
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Sardi C, Martini E, Mello T, Camelliti S, Sfondrini L, Marcucci F, Kallikourdis M, Sommariva M, Rumio C. Effect of acetylsalicylic acid on inflamed adipose tissue. Insulin resistance and hepatic steatosis in a mouse model of diet-induced obesity. Life Sci 2020; 264:118618. [PMID: 33141040 DOI: 10.1016/j.lfs.2020.118618] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 10/05/2020] [Accepted: 10/13/2020] [Indexed: 12/12/2022]
Abstract
AIMS Obesity represents a global health problem. Excessive caloric intake promotes the release of inflammatory mediators by hypertrophic adipocytes and obesity-induced inflammation is now recognized as a risk factor for the development of several diseases, such as cardiovascular diseases, insulin resistance, type-II diabetes, liver steatosis and cancer. Since obesity causes inflammation, we tested the ability of acetylsalicylic acid (ASA), a potent anti-inflammatory drug, in counteracting this inflammatory process and in mitigating obesity-associated health complications. MAIN METHODS Mice were fed with standard (SD) or high fat diet (HFD) for 3 months and then treated with acetylsalicylic acid for the subsequent two months. We then analyzed the metabolic and inflammatory status of their adipose and liver tissue by histological, molecular and biochemical analysis. KEY FINDINGS Although ASA did not exert any effect on body weight, quantification of adipocyte size revealed that the drug slightly reduced adipocyte hypertrophy, however not sufficient so as to induce weight loss. Most importantly, ASA was able to improve insulin resistance. Gene expression profiles of pro- and anti-inflammatory cytokines as well as the expression of macrophage and lymphocyte markers revealed that HFD led to a marked macrophage accumulation in the adipose tissue and an increase of several pro-inflammatory cytokines, a situation almost completely reverted after ASA administration. In addition, liver steatosis caused by HFD was completely abrogated by ASA treatment. SIGNIFICANCE ASA can efficiently ameliorate pathological conditions usually associated with obesity by inhibiting the inflammatory process occurring in the adipose tissue.
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Affiliation(s)
- Claudia Sardi
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, via Trentacoste 2, Milan, Italy; Adaptive Immunity Laboratory, Humanitas Clinical and Research Center IRCCS, Via Manzoni 56, 20089 Rozzano, Italy
| | - Elisa Martini
- Adaptive Immunity Laboratory, Humanitas Clinical and Research Center IRCCS, Via Manzoni 56, 20089 Rozzano, Italy
| | - Tommaso Mello
- Scienze Biomediche, Sperimentali e Cliniche 'Mario Serio', Università degli Studi di Firenze, Viale Pieraccini 6, 50139 Florence, Italy
| | - Simone Camelliti
- Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Via Mangiagalli 31, 20133 Milan, Italy
| | - Lucia Sfondrini
- Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Via Mangiagalli 31, 20133 Milan, Italy
| | - Fabrizio Marcucci
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, via Trentacoste 2, Milan, Italy
| | - Marinos Kallikourdis
- Adaptive Immunity Laboratory, Humanitas Clinical and Research Center IRCCS, Via Manzoni 56, 20089 Rozzano, Italy; Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20090 Pieve Emanuele, Italy
| | - Michele Sommariva
- Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Via Mangiagalli 31, 20133 Milan, Italy
| | - Cristiano Rumio
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, via Trentacoste 2, Milan, Italy.
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Zhao P, Saltiel AR. Interaction of Adipocyte Metabolic and Immune Functions Through TBK1. Front Immunol 2020; 11:592949. [PMID: 33193441 PMCID: PMC7606291 DOI: 10.3389/fimmu.2020.592949] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 09/30/2020] [Indexed: 12/19/2022] Open
Abstract
Adipocytes and adipose tissue play critical roles in the regulation of metabolic homeostasis. In obesity and obesity-associated metabolic diseases, immune cells infiltrate into adipose tissues. Interaction between adipocytes and immune cells re-shapes both metabolic and immune properties of adipose tissue and dramatically changes metabolic set points. Both the expression and activity of the non-canonical IKK family member TBK1 are induced in adipose tissues during diet-induced obesity. TBK1 plays important roles in the regulation of both metabolism and inflammation in adipose tissue and thus affects glucose and energy metabolism. Here we review the regulation and functions of TBK1 and the molecular mechanisms by which TBK1 regulates both metabolism and inflammation in adipose tissue. Finally, we discuss the potential of a TBK1/IKKε inhibitor as a new therapy for metabolic diseases.
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Affiliation(s)
- Peng Zhao
- Department of Medicine, University of California San Diego, La Jolla, CA, United States
| | - Alan R Saltiel
- Department of Medicine, University of California San Diego, La Jolla, CA, United States.,Department of Pharmacology, University of California San Diego, La Jolla, CA, United States
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30
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Lin S, Zhao XL, Wang Z. TANK-binding kinase 1 mediates osteoclast differentiation by regulating NF-κB, MAPK and Akt signaling pathways. Immunol Cell Biol 2020; 99:223-233. [PMID: 32896936 DOI: 10.1111/imcb.12401] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 12/02/2019] [Accepted: 09/06/2020] [Indexed: 12/16/2022]
Abstract
TANK-binding kinase 1 (TBK1) belongs to the noncanonical IκB kinase (IKK) family. The ubiquitously expressed protein is well known to play a pivotal role in innate immune response and inflammation. Although excessive inflammatory activities have been shown to affect osteoclast (OC) differentiation and function, direct relevance of TBK1 in bone turnover is not known. In this work, we specifically altered the TBK1 protein level by knocking down or overexpressing it without affecting its homologous protein IKKε expression, and demonstrated the effect of TBK1 on OC differentiation in bone marrow macrophages (BMMs) and RAW264.7 cells upon induction by receptor activator of nuclear factor-κB (NF-κB) ligand (RANKL). TBK1 knockdown was found to markedly inhibit the OC differentiation and function, while TBK1 overexpression enhanced OC formation. Downregulation of TBK1 greatly suppressed RANKL-induced gene expression of Mmp9, Atp6v0d2, Acp5, Ctsk andNfatc1 involved in the regulation of OC formation and function in both BMM and RAW264.7 cells. Mechanistic studies indicated that TBK1 affected the NF-κB signaling pathway as well as mitogen-activated protein kinases (MAPKs) and protein kinase B (Akt) activation during OC differentiation. Moreover, the protein level of TNF receptor-associated factor 6 (TRAF6) was increased, and the interaction of TRAF6 with TBK1 was potentiated, by RANKL. Collectively, we provide direct evidence showing that TBK1 effectively mediates OC differentiation and function by regulating NF-κB, MAPKs and Akt signals. A TBK1-targeted therapeutic strategy may be useful for the treatment of bone-related disorders.
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Affiliation(s)
- Shuai Lin
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiao-Li Zhao
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhen Wang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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31
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Zhang C, Peng SY, Hong S, Chen QW, Zeng X, Rong L, Zhong ZL, Zhang XZ. Biomimetic carbon monoxide nanogenerator ameliorates streptozotocin induced type 1 diabetes in mice. Biomaterials 2020; 245:119986. [DOI: 10.1016/j.biomaterials.2020.119986] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 03/17/2020] [Accepted: 03/17/2020] [Indexed: 12/29/2022]
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Lv P, Li C, Wang M, Ren J, Zhang Y, Fu G. TANK-binding kinase 1 alleviates myocardial ischemia/reperfusion injury through regulating apoptotic pathway. Biochem Biophys Res Commun 2020; 528:574-579. [PMID: 32505355 DOI: 10.1016/j.bbrc.2020.05.143] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 05/20/2020] [Indexed: 11/25/2022]
Abstract
Myocardial ischemia/reperfusion (MI/R) injury, a complicated pathophysiological process, is regulated by lots of signaling pathways. Here in our present study, we identified TANK-binding kinase 1 (TBK1), an IKK-related serine/threonine kinase, as a protective regulator in MI/R injury. Our results indicated that TBK1 was decreased in MI/R injury in mice. However, after overexpressing TBK1 through an intramyocardial injection of TBK1 adenovirus, TBK1 overexpression improved cardiac function detected by echocardiography, decreased infarct size detected by Evans Blue and TTC staining, reduced cardiomyocyte apoptosis measured by TUNEL staining and alleviated disruption of mitochondria and cardiac muscle fibers detected by TEM in response to MI/R injury. Consistently, TBK1 overexpression ameliorated mitochondrial oxygen consumption rate (OCR) in neonatal rat cardiomyocytes (NRCMs) in response to hypoxia/reoxygenation (H/R) injury. Mechanistically, TBK1 overexpression upregulated Bcl-2 (an anti-apoptotic protein) but downregulated Bax (a pro-apoptotic protein) in vivo and in vitro. Collectively, our findings uncovered a pivotal function of TBK1 in MI/R injury through regulating the levels of apoptotic proteins for the first time, which might represent a promising target in treating MI/R patients in the future.
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Affiliation(s)
- Ping Lv
- Department of Cardiology, Sir Run Run Shaw Hospital, Medical School of Zhejiang University, 310020, Hangzhou, Zhejiang, China; Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Hangzhou, Zhejiang, China; Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Congye Li
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Meihui Wang
- Department of Cardiology, Sir Run Run Shaw Hospital, Medical School of Zhejiang University, 310020, Hangzhou, Zhejiang, China; Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Jun Ren
- Department of Cardiology, Zhongshan Hospital, Fudan University, 200032, Shanghai, China; Shanghai Institute of Cardiovascular Diseases, Shanghai, China; Center for Cardiovascular Research and Alternative Medicine, University of Wyoming College of Health Sciences, Laramie, WY, 82071, USA
| | - Yingmei Zhang
- Department of Cardiology, Zhongshan Hospital, Fudan University, 200032, Shanghai, China; Shanghai Institute of Cardiovascular Diseases, Shanghai, China.
| | - Guosheng Fu
- Department of Cardiology, Sir Run Run Shaw Hospital, Medical School of Zhejiang University, 310020, Hangzhou, Zhejiang, China; Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Hangzhou, Zhejiang, China.
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He Q, Xia X, Yao K, Zeng J, Wang W, Wu Q, Tang R, Zou X. Amlexanox reversed non-alcoholic fatty liver disease through IKKε inhibition of hepatic stellate cell. Life Sci 2019; 239:117010. [DOI: 10.1016/j.lfs.2019.117010] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 10/07/2019] [Accepted: 10/21/2019] [Indexed: 01/07/2023]
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Paternoster S, Falasca M. The intricate relationship between diabetes, obesity and pancreatic cancer. Biochim Biophys Acta Rev Cancer 2019; 1873:188326. [PMID: 31707038 DOI: 10.1016/j.bbcan.2019.188326] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 09/28/2019] [Accepted: 10/31/2019] [Indexed: 02/07/2023]
Abstract
Pancreatic cancer is one of the leading determinants of global cancer mortality, and its incidence is predicted to increase, to become in 2030 the second most common cause of cancer-related death. Obesity and diabetes are recognized risk factors for the development of pancreatic cancer. In the last few decades an epidemic of diabetes and obesity has been spreading worldwide, forewarning an increase in incidence of pancreatic cancer. This review considers the most recent literature, covering the multiple molecular axis linking these three pathologies, aiming to draw a more comprehensive view of pancreatic cancer for a better theragnostic stratification of the population.
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Affiliation(s)
- Silvano Paternoster
- Metabolic Signalling Group, School Pharmacy and Biomedical Sciences, Curtin Health Innovation Research Institute, Curtin University, Bentley 6102, Perth, Western Australia, Australia.
| | - Marco Falasca
- Metabolic Signalling Group, School Pharmacy and Biomedical Sciences, Curtin Health Innovation Research Institute, Curtin University, Bentley 6102, Perth, Western Australia, Australia.
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Nouri K, Azad T, Lightbody E, Khanal P, Nicol CJ, Yang X. A kinome-wide screen using a NanoLuc LATS luminescent biosensor identifies ALK as a novel regulator of the Hippo pathway in tumorigenesis and immune evasion. FASEB J 2019; 33:12487-12499. [PMID: 31431076 DOI: 10.1096/fj.201901343r] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The Hippo pathway is an emerging signaling pathway that plays important roles in organ size control, tissue homeostasis, tumorigenesis, metastasis, drug resistance, and immune response. Although many regulators of the Hippo pathway have been reported, the extracellular stimuli and kinase regulators of the Hippo pathway remain largely unknown. To identify novel regulars of the Hippo pathway, in this study we created the first ultra-bright NanoLuc biosensor (BS) to monitor the activity of large tumor suppressor (LATS) kinase 1, a central player of the Hippo pathway. We show that this NanoLuc BS achieves significantly advanced sensitivity and stability both in vitro using purified proteins and in vivo in living cells and mice. Using this BS, we perform the first kinome-wide screen and identify many kinases regulating LATS and its effectors yes-associated protein (YAP) and transcriptional co-activator with PDZ- binding motif (TAZ). We also show for the first time that activation of receptor tyrosine kinase anaplastic lymphoma kinase (ALK) by its extracellular ligand family with sequence similarity (FAM)150 activates Hippo effector YAP/TAZ by increasing their nuclear translocation. Significantly, we show that constitutively active ALK induces tumorigenic phenotypes, such as increased cancer cell proliferation/colony formation via YAP/TAZ and elevated immune evasion via YAP/TAZ-programmed death-ligand 1 in breast and lung cancer cells. In summary, we have developed a new LATS BS for cancer biology and therapeutics research and uncovered a novel ALK-LATS-YAP/TAZ signaling axis that may play important roles in cancer and possibly other biologic processes.-Nouri, K., Azad, T., Lightbody, E., Khanal, P., Nicol, C. J., Yang, X. A kinome-wide screen using a NanoLuc LATS luminescent biosensor identifies ALK as a novel regulator of the Hippo pathway in tumorigenesis and immune evasion.
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Affiliation(s)
- Kazem Nouri
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - Taha Azad
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - Elizabeth Lightbody
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - Prem Khanal
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - Christopher J Nicol
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - Xiaolong Yang
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
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