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Paul S, Sarraf SA, Nam KH, Zavar L, DeFoor N, Biswas SR, Fritsch LE, Yaron TM, Johnson JL, Huntsman EM, Cantley LC, Ordureau A, Pickrell AM. NAK-associated protein 1/NAP1 activates TBK1 to ensure accurate mitosis and cytokinesis. J Cell Biol 2024; 223:e202303082. [PMID: 38059900 PMCID: PMC10702366 DOI: 10.1083/jcb.202303082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 10/03/2023] [Accepted: 11/10/2023] [Indexed: 12/08/2023] Open
Abstract
Subcellular location and activation of Tank Binding Kinase 1 (TBK1) govern precise progression through mitosis. Either loss of activated TBK1 or its sequestration from the centrosomes causes errors in mitosis and growth defects. Yet, what regulates its recruitment and activation on the centrosomes is unknown. We identified that NAK-associated protein 1 (NAP1) is essential for mitosis, binding to and activating TBK1, which both localize to centrosomes. Loss of NAP1 causes several mitotic and cytokinetic defects due to inactivation of TBK1. Our quantitative phosphoproteomics identified numerous TBK1 substrates that are not only confined to the centrosomes but are also associated with microtubules. Substrate motifs analysis indicates that TBK1 acts upstream of other essential cell cycle kinases like Aurora and PAK kinases. We also identified NAP1 as a TBK1 substrate phosphorylating NAP1 at S318 to promote its degradation by the ubiquitin proteasomal system. These data uncover an important distinct function for the NAP1-TBK1 complex during cell division.
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Affiliation(s)
- Swagatika Paul
- Graduate Program in Biomedical and Veterinary Sciences, Virginia-Maryland College of Veterinary Medicine, Blacksburg, VA, USA
| | - Shireen A. Sarraf
- Biochemistry Section, National Institutes of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Ki Hong Nam
- Cell Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Leila Zavar
- School of Neuroscience, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Nicole DeFoor
- School of Neuroscience, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Sahitya Ranjan Biswas
- Translational Biology, Medicine, and Health Graduate Program, Virginia Polytechnic Institute and State University, Roanoke, VA, USA
| | - Lauren E. Fritsch
- Translational Biology, Medicine, and Health Graduate Program, Virginia Polytechnic Institute and State University, Roanoke, VA, USA
| | - Tomer M. Yaron
- Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
- Englander Institute for Precision Medicine, Institute for Computational Biomedicine, Weill Cornell Medicine, New York, NY, USA
| | | | - Emily M. Huntsman
- Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
- Englander Institute for Precision Medicine, Institute for Computational Biomedicine, Weill Cornell Medicine, New York, NY, USA
| | - Lewis C. Cantley
- Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Alban Ordureau
- Cell Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Alicia M. Pickrell
- School of Neuroscience, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
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2
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Yang X, Liu Z. Role of TBK1 Inhibition in Targeted Therapy of Cancer. Mini Rev Med Chem 2024; 24:1031-1045. [PMID: 38314681 DOI: 10.2174/0113895575271977231115062803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/16/2023] [Accepted: 09/16/2023] [Indexed: 02/06/2024]
Abstract
TANK-binding kinase 1 (TBK1) is a serine/threonine protein that plays a crucial role in various biological processes like immunity, autophagy, cell survival, and proliferation. The level and kinase activity of the TBK1 protein is regulated through post-translational modifications (PTMs). TBK1 mainly mediates the activation of IRF3/7 and NF-κB signaling pathways while also participating in the regulation of cellular activities such as autophagy, mitochondrial metabolism, and cell proliferation. TBK1 regulates immune, metabolic, inflammatory, and tumor occurrence and development within the body through these cellular activities. TBK1 kinase has emerged as a promising therapeutic target for tumor immunity. However, its molecular mechanism of action remains largely unknown. The identification of selective TBK1 small molecule inhibitors can serve as valuable tools for investigating the biological function of TBK1 protein and also as potential drug candidates for tumor immunotherapy. The current research progress indicates that some TBK1 inhibitors (compounds 15,16 and 21) exhibit certain antitumor effects in vitro culture systems. Here, we summarize the mechanism of action of TBK1 in tumors in recent years and the progress of small molecule inhibitors of TBK1.
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Affiliation(s)
- Xueqing Yang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, China
| | - Zongliang Liu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, China
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3
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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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4
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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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5
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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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6
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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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7
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Gao J, Fu Y, Song L, Long M, Zhang Y, Qin J, Liu H. Proapoptotic Effect of Icariin on Human Ovarian Cancer Cells via the NF-[Formula: see text]B/PI3K-AKT Signaling Pathway: A Network Pharmacology-Directed Experimental Investigation. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2022; 50:589-619. [PMID: 35114909 DOI: 10.1142/s0192415x22500239] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Based on network pharmacology tools and public bioinformatics databases, the pharmacodynamic target and key mechanism of icariin (ICA) in the treatment of ovarian cancer (OC) were identified and experimentally verified. Our previous research showed that TNF, MMP9, STAT3, PIK3CA, ERBB2, MTOR, IL2, PTGS2, KDR and F2 are important targets of ICA in the treatment of OC. TNF, as a hub gene in tumor tissues, was associated with poor prognosis. ICA acted on OC mainly through the biological functions of various kinases, and the pathway with the highest accuracy ([Formula: see text]-value) was PI3K. Meanwhile, we observed a close upstream and downstream relationship between NF-[Formula: see text]B and the Pl3K-AKT pathway. This study further verified the mechanism of ICA in promoting apoptosis of SKOV3 cells through the NF-[Formula: see text]B signaling pathway and the tandem relationship between NF-[Formula: see text]B and the Pl3K-AKT pathway. The assay results demonstrated that ICA can promote the apoptosis of SKOV3 cells as indicated by the proapoptotic markers Bax, Bcl-xl and Caspase-3 and the key factors of the NF-[Formula: see text]B signaling pathway (NF-[Formula: see text]Bp65, p-NF-[Formula: see text]Bp65, p-I[Formula: see text]B[Formula: see text] and I[Formula: see text]B[Formula: see text]. ICA can block the classical NF-[Formula: see text]B pathway by inhibiting I[Formula: see text]B[Formula: see text] phosphorylation and consequently blocking the activation of the NF-[Formula: see text]B pathway in SKOV3 cells. ICA can also promote apoptosis by blocking the activation of the NF-[Formula: see text]B pathway in SKOV3 cells via inhibition of NF-[Formula: see text]Bp65 nuclear translocation. After using a PI3K pathway inhibitor, we further discovered that ICA may reduce AKT signal transduction by inhibiting the level of Akt phosphorylation, resulting in a loss of PI3K/Akt-dependent activation of the NF-[Formula: see text]B pathway.
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Affiliation(s)
- Jingjing Gao
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Yanjin Fu
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Linliang Song
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Mengsha Long
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Yiyao Zhang
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Jiajia Qin
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Haiquan Liu
- Guangzhou University of Traditional Chinese Medicine, Huizhou Traditional Chinese Medicine Hospital, Huizhou, Guangdong 516001, P. R. China
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8
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Yan Z, Wu H, Liu H, Zhao G, Zhang H, Zhuang W, Liu F, Zheng Y, Liu B, Zhang L, Gao C. The protein arginine methyltransferase PRMT1 promotes TBK1 activation through asymmetric arginine methylation. Cell Rep 2021; 36:109731. [PMID: 34551290 DOI: 10.1016/j.celrep.2021.109731] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 06/25/2021] [Accepted: 08/26/2021] [Indexed: 11/16/2022] Open
Abstract
TBK1 is an essential kinase for the innate immune response against viral infection. However, the key molecular mechanisms regulating the TBK1 activation remain elusive. Here, we identify PRMT1, a type I protein arginine methyltransferase, as an essential regulator of TBK1 activation. PRMT1 directly interacts with TBK1 and catalyzes asymmetric methylation of R54, R134, and R228 on TBK1. This modification enhances TBK1 oligomerization after viral infection, which subsequently promotes TBK1 phosphorylation and downstream type I interferon production. More important, myeloid-specific Prmt1 knockout mice are more susceptible to infection with DNA and RNA viruses than Prmt1fl/fl mice. Our findings reveal insights into the molecular regulation of TBK1 activation and demonstrate the essential function of protein arginine methylation in innate antiviral immunity.
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Affiliation(s)
- Zhenzhen Yan
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Haifeng Wu
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Hansen Liu
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Guimin Zhao
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Honghai Zhang
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Wanxin Zhuang
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Feng Liu
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Yi Zheng
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Bingyu Liu
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Lei Zhang
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Chengjiang Gao
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong 250012, P.R. China.
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Zhou X, Barkley-Levenson AM, Montilla-Perez P, Telese F, Palmer AA. Functional validation of a finding from a mouse genome-wide association study shows that Azi2 influences the acute locomotor stimulant response to methamphetamine. GENES, BRAIN, AND BEHAVIOR 2021; 20:e12760. [PMID: 34173327 DOI: 10.1111/gbb.12760] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 06/22/2021] [Accepted: 06/24/2021] [Indexed: 12/12/2022]
Abstract
In a previous genome-wide association study (GWAS) using outbred Carworth Farms White (CFW) mice, we identified a locus that influenced the stimulant response to methamphetamine and colocalized with an eQTL for Azi2. Based on those findings, we hypothesized that heritable differences in Azi2 expression were causally related to the differential response to methamphetamine. To test that hypothesis, we created a mutant Azi2 allele on an inbred C57BL/6J background. The mutant allele enhanced the locomotor response to methamphetamine. However, the GWAS had suggested that lower Azi2 would decrease the locomotor response to methamphetamine. We also sought to explore the mechanism by which Azi2 influenced methamphetamine sensitivity. A recent publication reported that the 3'UTR of Azi2 mRNA downregulates the expression of Slc6a3, which encodes the dopamine transporter, which is a key target of methamphetamine. We evaluated the relationship between Azi2, Azi2 3'UTR and Slc6a3 expression in the ventral tegmental area of wildtype, mutant Azi2 heterozygotes and mutant Azi2 homozygotes and in a new cohort of outbred CFW mice where both allele mapped in our prior GWAS were segregating. We did not observe any correlation between Azi2 and Slc6a3 in either cohort. However, RNA sequencing confirmed that the Azi2 mutation altered Azi2 expression and also revealed a number of potentially important genes and pathways that were regulated by Azi2, including the metabotropic glutamate receptor group III pathway and nicotinic acetylcholine receptor signaling pathway. Our results support a role for Azi2 in methamphetamine sensitivity; however, the exact mechanism does not appear to involve regulation of Slc6a3.
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Affiliation(s)
- Xinzhu Zhou
- Biomedical Sciences Graduate Program, University of California San Diego, La Jolla, California, USA
| | | | | | - Francesca Telese
- Department of Medicine, University of California San Diego, La Jolla, California, USA
| | - Abraham A Palmer
- Department of Psychiatry, University of California San Diego, La Jolla, California, USA
- Institute for Genomic Medicine, University of California San Diego, La Jolla, California, USA
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10
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Alam M, Hasan GM, Hassan MI. A review on the role of TANK-binding kinase 1 signaling in cancer. Int J Biol Macromol 2021; 183:2364-2375. [PMID: 34111484 DOI: 10.1016/j.ijbiomac.2021.06.022] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 05/19/2021] [Accepted: 06/03/2021] [Indexed: 02/06/2023]
Abstract
TANK-binding kinase 1 (TBK1) regulates various biological processes including, NF-κB signaling, immune response, autophagy, cell division, Ras-mediated oncogenesis, and AKT pro-survival signaling. Enhanced TBK1 activity is associated with autoimmune diseases and cancer, suggesting its role in therapeutic targeting of interferonopathies. In addition, dysregulation of TBK1 activity promotes several inflammatory disorders and oncogenesis. Structural and biochemical study reports provide the molecular process of TBK1 activation and recap the substrate selection about TBK1. This review summarizes recent findings on the molecular mechanisms by which TBK1 is involved in cancer signaling. The IKK-ε and TBK1 are together associated with inflammatory diseases by inducing type I IFNs. Furthermore, TBK1 signaling regulates radiation-induced epithelial-mesenchymal transition by controlling phosphorylation of GSK-3β and expression of Zinc finger E-box-binding homeobox 1, suggesting, TBK1 could be targeted for radiotherapy-induced metastasis therapy. Despite a considerable increase in the list of TBK1 inhibitors, only a few has potential to control cancer. Among them, a compound BX795 is considered a potent and selective inhibitor of TBK1. We discussed the therapeutic potential of small-molecule inhibitors of TBK1, particularly those with high selectivity, which will enable further exploration in the therapeutic management of cancer and inflammatory diseases.
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Affiliation(s)
- Manzar Alam
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Gulam Mustafa Hasan
- Department of Biochemistry, College of Medicine, Prince Sattam Bin Abdulaziz University, PO Box 173, Al-Kharj 11942, Saudi Arabia
| | - Md Imtaiyaz Hassan
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India.
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11
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Lawler C, Brady G. Poxviral Targeting of Interferon Regulatory Factor Activation. Viruses 2020; 12:v12101191. [PMID: 33092186 PMCID: PMC7590177 DOI: 10.3390/v12101191] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 10/15/2020] [Accepted: 10/15/2020] [Indexed: 12/21/2022] Open
Abstract
As viruses have a capacity to rapidly evolve and continually alter the coding of their protein repertoires, host cells have evolved pathways to sense viruses through the one invariable feature common to all these pathogens-their nucleic acids. These genomic and transcriptional pathogen-associated molecular patterns (PAMPs) trigger the activation of germline-encoded anti-viral pattern recognition receptors (PRRs) that can distinguish viral nucleic acids from host forms by their localization and subtle differences in their chemistry. A wide range of transmembrane and cytosolic PRRs continually probe the intracellular environment for these viral PAMPs, activating pathways leading to the activation of anti-viral gene expression. The activation of Nuclear Factor Kappa B (NFκB) and Interferon (IFN) Regulatory Factor (IRF) family transcription factors are of central importance in driving pro-inflammatory and type-I interferon (TI-IFN) gene expression required to effectively restrict spread and trigger adaptive responses leading to clearance. Poxviruses evolve complex arrays of inhibitors which target these pathways at a variety of levels. This review will focus on how poxviruses target and inhibit PRR pathways leading to the activation of IRF family transcription factors.
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12
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Cai C, Liu J, Tan Y, Wei J, Yang X, Xiao J, Feng H. Black carp NAP1 positively regulates MDA5-mediated antiviral signaling during the innate immune activation. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2020; 107:103659. [PMID: 32081717 DOI: 10.1016/j.dci.2020.103659] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/16/2020] [Accepted: 02/16/2020] [Indexed: 06/10/2023]
Abstract
NAK-associated protein 1 (NAP1) is involved in NF-κB activation and interferon (IFN) induction in human and mammal; however, the role of teleost NAP1 in innate immunity remains unknown. In this paper, NAP1 homologue of black carp (Mylopharyngodon piceus) has been cloned and characterized. Black carp NAP1 (bcNAP1) migrated around 47 kDa in immunoblot assay and was identified as a cytosolic protein by immunofluorescent staining. bcNAP1 showed little IFN promoter-inducing ability in the reporter assay and bcNAP1 presented no antiviral activity against either grass carp reovirus (GCRV) or spring viremia of carp virus (SVCV) in the plaque assay. However, when co-expressed with black carp MDA5 (bcMDA5), bcNAP1 enhanced bcMDA5-mediated IFN promoter induction in the reporter assay. Accordingly, the plaque assay data demonstrated that the antiviral activity of bcMDA5 against both GCRV and SVCV was upregulated by bcNAP1. Additionally, the association between bcNAP1 and bcMDA5 has been identified through immunofluorescent staining and co-immunoprecipitation (co-IP) assay. Thus, the data generated in this study support the conclusion that bcNAP1 interacts with bcMDA5 and up-regulates bcMDA5-mediated antiviral signaling during host innate immune activation.
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Affiliation(s)
- Can Cai
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Ji Liu
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Yaqi Tan
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Jing Wei
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Xiao Yang
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Jun Xiao
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China.
| | - Hao Feng
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China.
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13
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Kleinstern G, Yan H, Hildebrandt MAT, Vijai J, Berndt SI, Ghesquières H, McKay J, Wang SS, Nieters A, Ye Y, Monnereau A, Brooks-Wilson AR, Lan Q, Melbye M, Jackson RD, Teras LR, Purdue MP, Vajdic CM, Vermeulen RCH, Giles GG, Cocco PL, Birmann BM, Kraft P, Albanes D, Zeleniuch-Jacquotte A, Crouch S, Zhang Y, Sarangi V, Asmann Y, Offit K, Salles G, Wu X, Smedby KE, Skibola CF, Slager SL, Rothman N, Chanock SJ, Cerhan JR. Inherited variants at 3q13.33 and 3p24.1 are associated with risk of diffuse large B-cell lymphoma and implicate immune pathways. Hum Mol Genet 2020; 29:70-79. [PMID: 31600786 PMCID: PMC7001601 DOI: 10.1093/hmg/ddz228] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 08/19/2019] [Accepted: 09/10/2019] [Indexed: 12/19/2022] Open
Abstract
We previously identified five single nucleotide polymorphisms (SNPs) at four susceptibility loci for diffuse large B-cell lymphoma (DLBCL) in individuals of European ancestry through a large genome-wide association study (GWAS). To further elucidate genetic susceptibility to DLBCL, we sought to validate two loci at 3q13.33 and 3p24.1 that were suggestive in the original GWAS with additional genotyping. In the meta-analysis (5662 cases and 9237 controls) of the four original GWAS discovery scans and three replication studies, the 3q13.33 locus (rs9831894; minor allele frequency [MAF] = 0.40) was associated with DLBCL risk [odds ratio (OR) = 0.83, P = 3.62 × 10-13]. rs9831894 is in linkage disequilibrium (LD) with additional variants that are part of a super-enhancer that physically interacts with promoters of CD86 and ILDR1. In the meta-analysis (5510 cases and 12 817 controls) of the four GWAS discovery scans and four replication studies, the 3p24.1 locus (rs6773363; MAF = 0.45) was also associated with DLBCL risk (OR = 1.20, P = 2.31 × 10-12). This SNP is 29 426-bp upstream of the nearest gene EOMES and in LD with additional SNPs that are part of a highly lineage-specific and tumor-acquired super-enhancer that shows long-range interaction with AZI2 promoter. These loci provide additional evidence for the role of immune function in the etiology of DLBCL, the most common lymphoma subtype.
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Affiliation(s)
| | | | | | - Joseph Vijai
- Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | | | | | - James McKay
- International Agency for Research on Cancer, Lyon, France
| | - Sophia S Wang
- City of Hope Beckman Research Institute, Duarte, CA, USA
| | - Alexandra Nieters
- Center for Chronic Immunodeficiency, Medical Center—University of Freiburg, Freiburg, Germany
| | - Yuanqing Ye
- University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Alain Monnereau
- Centre for Research in Epidemiology and Population Health (CESP), Villejuif, France
| | | | - Qing Lan
- National Cancer Institute, Bethesda, MD, USA
| | | | | | | | | | | | | | - Graham G Giles
- Cancer Epidemiology and Intelligence Division, Cancer Council Victoria, Melbourne, Australia
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Australia
| | - Pier Luigi Cocco
- Department of Medical Sciences and Public Health, Occupational Health Section, University of Cagliari, Monserrato, Italy
| | - Brenda M Birmann
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Peter Kraft
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Program in Genetic Epidemiology and Statistical Genetics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | | | | | | | - Yawei Zhang
- Yale School of Public Health, New Haven, CT, USA
| | | | | | - Kenneth Offit
- Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | | | - Xifeng Wu
- University of Texas MD Anderson Cancer Center, Houston, TX, USA
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14
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Yin M, Wang X, Lu J. Advances in IKBKE as a potential target for cancer therapy. Cancer Med 2020; 9:247-258. [PMID: 31733040 PMCID: PMC6943080 DOI: 10.1002/cam4.2678] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 10/20/2019] [Accepted: 10/22/2019] [Indexed: 12/16/2022] Open
Abstract
IKBKE (inhibitor of nuclear factor kappa-B kinase subunit epsilon), a member of the nonclassical IKK family, plays an important role in the regulation of inflammatory reactions, activation and proliferation of immune cells, and metabolic diseases. Recent studies have demonstrated that IKBKE plays a crucial regulatory role in malignant tumor development. In recent years, IKBKE, an important oncoprotein in several kinds of tumors, has been widely found to regulate a variety of cytokines and signaling pathways. IKBKE promotes the growth, proliferation, invasion, and drug resistance of various cancers. This paper makes a detailed review that focuses on the recent discoveries of IKBKE in the malignant tumors, and puts forward that IKBKE is becoming an important therapeutic target for clinical treatment, which has been more and more realized.
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Affiliation(s)
- Min Yin
- Department of OncologyJinan Fifth People's HospitalJinanPR China
| | - Xin Wang
- Department of OncologyRenmin Hospital of Wuhan UniversityHubei ProvinceWuhanPR China
- Department of Radiation OncologyShandong Cancer Hospital Affiliated to Shandong UniversityShandong Academy of Medical ScienceJinanPR China
| | - Jie Lu
- Department of NeurosurgeryThe First Affiliated Hospital of Shandong First Medical UniversityJinanPR China
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15
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Lefranc J, Schulze VK, Hillig RC, Briem H, Prinz F, Mengel A, Heinrich T, Balint J, Rengachari S, Irlbacher H, Stöckigt D, Bömer U, Bader B, Gradl SN, Nising CF, von Nussbaum F, Mumberg D, Panne D, Wengner AM. Discovery of BAY-985, a Highly Selective TBK1/IKKε Inhibitor. J Med Chem 2019; 63:601-612. [DOI: 10.1021/acs.jmedchem.9b01460] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Julien Lefranc
- Pharmaceuticals, Research and Development, Bayer AG, 13353 Berlin, Germany
| | | | | | - Hans Briem
- Pharmaceuticals, Research and Development, Bayer AG, 13353 Berlin, Germany
| | - Florian Prinz
- Pharmaceuticals, Research and Development, Bayer AG, 13353 Berlin, Germany
| | - Anne Mengel
- Pharmaceuticals, Research and Development, Bayer AG, 13353 Berlin, Germany
| | - Tobias Heinrich
- Pharmaceuticals, Research and Development, Bayer AG, 13353 Berlin, Germany
| | - Jozsef Balint
- ASCA GmbH (Angewandte Synthesechemie Adlershof), 12489 Berlin, Germany
| | - Srinivasan Rengachari
- Leicester Institute of Structural and Chemical Biology, Department of Molecular and Cell Biology, University of Leicester, Lancaster Road, LE1 7RH Leicester, U.K
| | - Horst Irlbacher
- Pharmaceuticals, Research and Development, Bayer AG, 13353 Berlin, Germany
| | - Detlef Stöckigt
- Pharmaceuticals, Research and Development, Bayer AG, 13353 Berlin, Germany
| | - Ulf Bömer
- Pharmaceuticals, Research and Development, Bayer AG, 13353 Berlin, Germany
| | - Benjamin Bader
- Pharmaceuticals, Research and Development, Bayer AG, 13353 Berlin, Germany
| | | | | | - Franz von Nussbaum
- Pharmaceuticals, Research and Development, Bayer AG, 13353 Berlin, Germany
| | - Dominik Mumberg
- Pharmaceuticals, Research and Development, Bayer AG, 13353 Berlin, Germany
| | - Daniel Panne
- Leicester Institute of Structural and Chemical Biology, Department of Molecular and Cell Biology, University of Leicester, Lancaster Road, LE1 7RH Leicester, U.K
- European Molecular Biology Laboratory, 38042 Grenoble, France
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16
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The Capsid Protein of Hepatitis E Virus Inhibits Interferon Induction via Its N-terminal Arginine-Rich Motif. Viruses 2019; 11:v11111050. [PMID: 31717991 PMCID: PMC6928999 DOI: 10.3390/v11111050] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 11/07/2019] [Indexed: 12/28/2022] Open
Abstract
Hepatitis E virus (HEV) causes predominantly acute and self-limiting hepatitis. However, in HEV-infected pregnant women, the case fatality rate because of fulminant hepatitis can be up to 30%. HEV infection is zoonotic for some genotypes. The HEV genome contains three open reading frames: ORF1 encodes the non-structural polyprotein involved in viral RNA replication; ORF2 encodes the capsid protein; ORF3 encodes a small multifunctional protein. Interferons (IFNs) play a significant role in the early stage of the host antiviral response. In this study, we discovered that the capsid protein antagonizes IFN induction. Mechanistically, the capsid protein blocked the phosphorylation of IFN regulatory factor 3 (IRF3) via interaction with the multiprotein complex consisting of mitochondrial antiviral-signaling protein (MAVS), TANK-binding kinase 1 (TBK1), and IRF3. The N-terminal domain of the capsid protein was found to be responsible for the inhibition of IRF3 activation. Further study showed that the arginine-rich-motif in the N-terminal domain is indispensable for the inhibition as mutations of any of the arginine residues abolished the blockage of IRF3 phosphorylation. These results provide further insight into HEV interference with the host innate immunity.
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17
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Oral cancer-derived exosomal NAP1 enhances cytotoxicity of natural killer cells via the IRF-3 pathway. Oral Oncol 2019; 76:34-41. [PMID: 29290284 DOI: 10.1016/j.oraloncology.2017.11.024] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 11/12/2017] [Accepted: 11/25/2017] [Indexed: 12/27/2022]
Abstract
OBJECTIVE To examine the effects of oral cancer-derived exosomes (OCEXs) on natural killer (NK) cells and to explore the underlying mechanism. MATERIALS AND METHODS OCEXs were isolated from the cell culture supernatant of oral cancer (OC) cells using ultrafiltration and affinity chromatography and were identified using electron microscopy, nanoparticle tracking analysis (NTA) and immunoblotting. The effects of OCEXs on NK cells were analyzed using laser scanning confocal microscopy and several functional assays of NK cells. To explore the mechanism of their effects, antibody array, protein mass spectrometry and RNA interference were adopted. RESULTS The particles isolated from the OC cells were identified as exosomes with satisfactory morphology, concentration and purity. The OCEXs were internalized by NK cells and then promoted the biological functions of NK cells, including proliferation, release of perforin and granzyme M and cytotoxicity. Furthermore, OCEXs increased the expression of interferon regulatory factor 3 (IRF-3) and its phosphorylation, which drove the expression of the type I interferon (IFN) gene and the chemokine (C-X-C motif) ligand (CXCL) genes, thereby promoting the functions of NK cells. In addition, NF-κB-activating kinase-associated protein 1 (NAP1), an upstream activator of IRF-3, was enriched in OCEXs, and treatment with OCEXs increased the expression of NAP1 in NK cells. Importantly, NAP1-depleted OCEXs obtained from OC cells had a dramatically weakened influence on NK cells. CONCLUSION Our findings reveal a previously unrecognized function of exosomal NAP1 derived from OC cells in enhancing the cytotoxicity of NK cells via the IRF-3 pathway.
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18
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Wang X, Teng F, Lu J, Mu D, Zhang J, Yu J. Expression and prognostic role of IKBKE and TBK1 in stage I non-small cell lung cancer. Cancer Manag Res 2019; 11:6593-6602. [PMID: 31406474 PMCID: PMC6642623 DOI: 10.2147/cmar.s204924] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 05/27/2019] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND The inhibitors of nuclear factor kappa-B kinase subunit epsilon (IKBKE) and TANK-binding kinase 1 (TBK1) are important members of the nonclassical IKK family that share the kinase domain. They are important oncogenes for activation of several signaling pathways in several tumors. This study aims to explore the expression of IKBKE and TBK1 and their prognostic role in stage I non-small cell lung cancer (NSCLC). PATIENTS AND METHODS A total of 142 surgically resected stage I NSCLC patients were enrolled and immunohistochemistry of IKBKE and TBK1 was performed. RESULTS IKBKE and TBK1 were expressed in 121 (85.2%) and 114 (80.3%) of stage I NSCLC patients respectively. IKBKE expression was significantly associated with TBK1 expression (P=0.004). Furthermore, multivariate regression analyses showed there was a significant relationship between patients with risk factors, the recurrence pattern of metastasis and IKBKE+/TBK1+ co-expression (P=0.032 and P=0.022, respectively). In Kaplan-Meier survival curve analyses, the IKBKE+/TBK1+ co-expression subgroup was significantly associated with poor overall survival (P=0.014). CONCLUSIONS This is the first study to investigate the relationship between IKBKE and TBK1 expression and clinicopathologic characteristics in stage I NSCLC patients. IKBKE+/TBK1+ co-expression was significantly obvious in patients with risk factors and with recurrence pattern of distant metastasis. Furthermore, IKBKE+/TBK1+ is also an effective prognostic predictor for poor overall survival.
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Affiliation(s)
- Xin Wang
- Department of Oncology, Renmin Hospital of Wuhan University, Wuhan, Hubei430060, People’s Republic of China
- Department of Radiation Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong250117, People’s Republic of China
| | - Feifei Teng
- Department of Radiation Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong250117, People’s Republic of China
| | - Jie Lu
- Department of Neurosurgery, Shandong Province Qianfoshan Hospital of Shandong University, Jinan, Shandong250014, People’s Republic of China
| | - Dianbin Mu
- Department of Pathology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong250117, People’s Republic of China
| | - Jianbo Zhang
- Department of Pathology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong250117, People’s Republic of China
| | - Jinming Yu
- Department of Oncology, Renmin Hospital of Wuhan University, Wuhan, Hubei430060, People’s Republic of China
- Department of Radiation Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong250117, People’s Republic of China
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19
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Zhao C, Zhao W. TANK-binding kinase 1 as a novel therapeutic target for viral diseases. Expert Opin Ther Targets 2019; 23:437-446. [DOI: 10.1080/14728222.2019.1601702] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Chunyuan Zhao
- Department of Immunology, School of Basic Medical Science, Shandong University, Jinan, China
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, China
- Department of Cell Biology, School of Basic Medical Science, Shandong University, Jinan, China
| | - Wei Zhao
- Department of Immunology, School of Basic Medical Science, Shandong University, Jinan, China
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, China
- Department of Cell Biology, School of Basic Medical Science, Shandong University, Jinan, China
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20
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Identification of an IKBKE inhibitor with antitumor activity in cancer cells overexpressing IKBKE. Cytokine 2019; 116:78-87. [DOI: 10.1016/j.cyto.2019.01.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 01/04/2019] [Accepted: 01/07/2019] [Indexed: 11/21/2022]
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21
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Shin CH, Choi DS. Essential Roles for the Non-Canonical IκB Kinases in Linking Inflammation to Cancer, Obesity, and Diabetes. Cells 2019; 8:cells8020178. [PMID: 30791439 PMCID: PMC6406369 DOI: 10.3390/cells8020178] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 02/13/2019] [Accepted: 02/18/2019] [Indexed: 12/17/2022] Open
Abstract
Non-canonical IκB kinases (IKKs) TBK1 and IKKε have essential roles as regulators of innate immunity and cancer. Recent work has also implicated these kinases in distinctively controlling glucose homeostasis and repressing adaptive thermogenic and mitochondrial biogenic response upon obesity-induced inflammation. Additionally, TBK1 and IKKε regulate pancreatic β-cell regeneration. In this review, we summarize current data on the functions and molecular mechanisms of TBK1 and IKKε in orchestrating inflammation to cancer, obesity, and diabetes.
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Affiliation(s)
- Chong Hyun Shin
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN 55905, USA.
| | - Doo-Sup Choi
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN 55905, USA.
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22
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Shang J, Xia T, Han QQ, Zhao X, Hu MM, Shu HB, Guo L. Quantitative Proteomics Identified TTC4 as a TBK1 Interactor and a Positive Regulator of SeV-Induced Innate Immunity. Proteomics 2019; 18. [PMID: 29251827 DOI: 10.1002/pmic.201700403] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 12/06/2017] [Indexed: 12/20/2022]
Abstract
TBK1, STING, and MDA5 are important players within the antiviral innate immune response network. We mapped the interactome of endogenous TBK1, STING, and MDA5 by affinity enrichment MS in virally infected or uninfected THP-1 cells. Based on quantitative data of more than 2000 proteins and stringent statistical analysis, 58 proteins were identified as high-confidence interactors for at least one of three bait proteins. Our data indicated that TBK1 and MDA5 mostly interacted within preexisting protein networks, while STING interacted with different proteins with different viral infections. Functional analysis was performed on 17 interactors, and six were found to have functions in innate immune responses. We identified TTC4 as a TBK1 interactor and positive regulator of sendai virus-induced innate immunity.
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Affiliation(s)
- Jun Shang
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei, China
| | - Tian Xia
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei, China
| | - Qiang-Qiang Han
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei, China
| | - Xiaolu Zhao
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei, China
| | - Ming-Ming Hu
- Medical Research Institute, Wuhan University, Wuhan, Hubei, China
| | - Hong-Bing Shu
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei, China.,Medical Research Institute, Wuhan University, Wuhan, Hubei, China
| | - Lin Guo
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei, China
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23
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Sud A, Thomsen H, Orlando G, Försti A, Law PJ, Broderick P, Cooke R, Hariri F, Pastinen T, Easton DF, Pharoah PDP, Dunning AM, Peto J, Canzian F, Eeles R, Kote-Jarai ZS, Muir K, Pashayan N, Campa D, Hoffmann P, Nöthen MM, Jöckel KH, von Strandmann EP, Swerdlow AJ, Engert A, Orr N, Hemminki K, Houlston RS. Genome-wide association study implicates immune dysfunction in the development of Hodgkin lymphoma. Blood 2018; 132:2040-2052. [PMID: 30194254 PMCID: PMC6236462 DOI: 10.1182/blood-2018-06-855296] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 08/19/2018] [Indexed: 02/08/2023] Open
Abstract
To further our understanding of inherited susceptibility to Hodgkin lymphoma (HL), we performed a meta-analysis of 7 genome-wide association studies totaling 5325 HL cases and 22 423 control patients. We identify 5 new HL risk loci at 6p21.31 (rs649775; P = 2.11 × 10-10), 6q23.3 (rs1002658; P = 2.97 × 10-8), 11q23.1 (rs7111520; P = 1.44 × 10-11), 16p11.2 (rs6565176; P = 4.00 × 10-8), and 20q13.12 (rs2425752; P = 2.01 × 10-8). Integration of gene expression, histone modification, and in situ promoter capture Hi-C data at the 5 new and 13 known risk loci implicates dysfunction of the germinal center reaction, disrupted T-cell differentiation and function, and constitutive NF-κB activation as mechanisms of predisposition. These data provide further insights into the genetic susceptibility and biology of HL.
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Affiliation(s)
- Amit Sud
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, United Kingdom
| | - Hauke Thomsen
- Division of Molecular Genetic Epidemiology, German Cancer Research Center, Heidelberg, Germany
| | - Giulia Orlando
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, United Kingdom
| | - Asta Försti
- Division of Molecular Genetic Epidemiology, German Cancer Research Center, Heidelberg, Germany
- Center for Primary Health Care Research, Lund University, Malmö, Sweden
| | - Philip J Law
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, United Kingdom
| | - Peter Broderick
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, United Kingdom
| | - Rosie Cooke
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, United Kingdom
| | - Fadi Hariri
- Department of Human Genetics, McGill University and Genome Quebec Innovation Centre, McGill University, Montreal, QC, Canada
| | - Tomi Pastinen
- Department of Human Genetics, McGill University and Genome Quebec Innovation Centre, McGill University, Montreal, QC, Canada
| | - Douglas F Easton
- Centre for Cancer Genetic Epidemiology, Department of Oncology, and
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | - Paul D P Pharoah
- Centre for Cancer Genetic Epidemiology, Department of Oncology, and
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | - Alison M Dunning
- Centre for Cancer Genetic Epidemiology, Department of Oncology, and
| | - Julian Peto
- Department of Non-Communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Federico Canzian
- Genomic Epidemiology Group, German Cancer Research Center, Heidelberg, Germany
| | - Rosalind Eeles
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, United Kingdom
- Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - ZSofia Kote-Jarai
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, United Kingdom
| | - Kenneth Muir
- Institute of Population Health, University of Manchester, Manchester, United Kingdom
- Division of Health Sciences, Warwick Medical School, Warwick University, Coventry, United Kingdom
| | - Nora Pashayan
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
- Department of Applied Health Research, University College London, London, United Kingdom
| | - Daniele Campa
- Department of Biology, University of Pisa, Pisa, Italy
| | - Per Hoffmann
- Human Genomic Research Group, Department of Biomedicine, University of Basel, Basel, Switzerland
- Institute of Human Genetics and
- Department of Genomics, Life & Brain Center, University of Bonn, Bonn, Germany
| | - Markus M Nöthen
- Institute of Human Genetics and
- Department of Genomics, Life & Brain Center, University of Bonn, Bonn, Germany
| | | | - Elke Pogge von Strandmann
- Experimental Tumor Research, Center for Tumor Biology and Immunology, Clinic for Hematology, Oncology and Immunology, Philipps University, Marburg, Germany
| | - Anthony J Swerdlow
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, United Kingdom
- Division of Breast Cancer Research, The Institute of Cancer Research, London, United Kingdom; and
| | - Andreas Engert
- Department of Internal Medicine, University Hospital of Cologne, Cologne, Germany
| | - Nick Orr
- Division of Breast Cancer Research, The Institute of Cancer Research, London, United Kingdom; and
| | - Kari Hemminki
- Division of Molecular Genetic Epidemiology, German Cancer Research Center, Heidelberg, Germany
- Center for Primary Health Care Research, Lund University, Malmö, Sweden
| | - Richard S Houlston
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, United Kingdom
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Outlioua A, Pourcelot M, Arnoult D. The Role of Optineurin in Antiviral Type I Interferon Production. Front Immunol 2018; 9:853. [PMID: 29755463 PMCID: PMC5932347 DOI: 10.3389/fimmu.2018.00853] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 04/06/2018] [Indexed: 12/14/2022] Open
Abstract
After a viral infection and the stimulation of some pattern-recognition receptors as the toll-like receptor 3 in the endosomes or the RIG-I-like receptors in the cytosol, activation of the IKK-related kinase TBK1 leads to the production of type I interferons (IFNs) after phosphorylation of the transcription factors IRF3 and IRF7. Recent findings indicate an involvement of K63-linked polyubiquitination and of the Golgi-localized protein optineurin (OPTN) in the activation of this crucial kinase involved in innate antiviral immunity. This review summarizes the sensing of viruses and the signaling leading to type I IFN production following TBK1 activation through its ubiquitination and the sensing of ubiquitin chains by OPTN at the Golgi apparatus.
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Affiliation(s)
- Ahmed Outlioua
- INSERM, UMR_S 1197, Hôpital Paul Brousse, Villejuif, France
- Université Paris-Saclay, Paris, France
- Molecular Genetics and Immunophysiopathology Research Team, Health and Environment Laboratory, Aïn Chock Faculty of Sciences, Hassan II University of Casablanca, Casablanca, Morocco
| | - Marie Pourcelot
- INSERM, UMR_S 1197, Hôpital Paul Brousse, Villejuif, France
- Université Paris-Saclay, Paris, France
- ANSES, INRA, ENVA, UPEC, UMR_1161 Virology, LabEx IBEID, Maisons-Alfort, France
| | - Damien Arnoult
- INSERM, UMR_S 1197, Hôpital Paul Brousse, Villejuif, France
- Université Paris-Saclay, Paris, France
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25
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Targeting IκappaB kinases for cancer therapy. Semin Cancer Biol 2018; 56:12-24. [PMID: 29486318 DOI: 10.1016/j.semcancer.2018.02.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 02/18/2018] [Accepted: 02/21/2018] [Indexed: 01/05/2023]
Abstract
The inhibitory kappa B kinases (IKKs) and IKK related kinases are crucial regulators of the pro-inflammatory transcription factor, nuclear factor kappa B (NF-κB). The dysregulation in the activities of these kinases has been reported in several cancer types. These kinases are known to regulate survival, proliferation, invasion, angiogenesis, and metastasis of cancer cells. Thus, IKK and IKK related kinases have emerged as an attractive target for the development of cancer therapeutics. Several IKK inhibitors have been developed, few of which have advanced to the clinic. These inhibitors target IKK either directly or indirectly by modulating the activities of other signaling molecules. Some inhibitors suppress IKK activity by disrupting the protein-protein interaction in the IKK complex. The inhibition of IKK has also been shown to enhance the efficacy of conventional chemotherapeutic agents. Because IKK and NF-κB are the key components of innate immunity, suppressing IKK is associated with the risk of immune suppression. Furthermore, IKK inhibitors may hit other signaling molecules and thus may produce off-target effects. Recent studies suggest that multiple cytoplasmic and nuclear proteins distinct from NF-κB and inhibitory κB are also substrates of IKK. In this review, we discuss the utility of IKK inhibitors for cancer therapy. The limitations associated with the intervention of IKK are also discussed.
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Abstract
Interferons (IFNs) are secreted glycoproteins that are produced by cells in response to virus infection and other stimuli and induce an antiviral state in cells bearing IFN receptors. In this way, IFNs restrict virus replication and spread before an adaptive immune response is developed. Viruses are very sensitive to the effects of IFNs and consequently have evolved many strategies to interfere with interferon. This is particularly well illustrated by poxviruses, which have large dsDNA genomes and encode hundreds of proteins. Vaccinia virus is the prototypic poxvirus and expresses many proteins that interfere with IFN and are considered in this review. These proteins act either inside or outside the cell and within the cytoplasm or nucleus. They function by restricting the production of IFN by blocking the signaling pathways leading to transcription of IFN genes, stopping IFNs binding to their receptors, blocking IFN-induced signal transduction leading to expression of interferon-stimulated genes (ISGs), or inhibiting the antiviral activity of ISG products.
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Affiliation(s)
| | | | - Yongxu Lu
- University of Cambridge, Cambridge, United Kingdom
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27
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Lanucara F, Lam C, Mann J, Monie TP, Colombo SAP, Holman SW, Boyd J, Dange MC, Mann DA, White MRH, Eyers CE. Dynamic phosphorylation of RelA on Ser42 and Ser45 in response to TNFα stimulation regulates DNA binding and transcription. Open Biol 2017; 6:rsob.160055. [PMID: 27466442 PMCID: PMC4967822 DOI: 10.1098/rsob.160055] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 07/01/2016] [Indexed: 12/14/2022] Open
Abstract
The NF-κB signalling module controls transcription through a network of protein kinases such as the IKKs, as well as inhibitory proteins (IκBs) and transcription factors including RelA/p65. Phosphorylation of the NF-κB subunits is critical for dictating system dynamics. Using both non-targeted discovery and quantitative selected reaction monitoring-targeted proteomics, we show that the cytokine TNFα induces dynamic multisite phosphorylation of RelA at a number of previously unidentified residues. Putative roles for many of these phosphorylation sites on RelA were predicted by modelling of various crystal structures. Stoichiometry of phosphorylation determination of Ser45 and Ser42 revealed preferential early phosphorylation of Ser45 in response to TNFα. Quantitative analyses subsequently confirmed differential roles for pSer42 and pSer45 in promoter-specific DNA binding and a role for both of these phosphosites in regulating transcription from the IL-6 promoter. These temporal dynamics suggest that RelA-mediated transcription is likely to be controlled by functionally distinct NF-κB proteoforms carrying different combinations of modifications, rather than a simple ‘one modification, one effect’ system.
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Affiliation(s)
- Francesco Lanucara
- Centre for Proteome Research, Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Crown Street, Liverpool L69 7ZB, UK
| | - Connie Lam
- Systems Microscopy Centre, Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, UK
| | - Jelena Mann
- Fibrosis Laboratory, Liver Group, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Tom P Monie
- MRC Human Nutrition Research, University of Cambridge, Cambridge CB2 1GA, UK
| | - Stefano A P Colombo
- Systems Microscopy Centre, Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, UK
| | - Stephen W Holman
- Centre for Proteome Research, Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Crown Street, Liverpool L69 7ZB, UK
| | - James Boyd
- Systems Microscopy Centre, Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, UK
| | - Manohar C Dange
- Centre for Proteome Research, Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Crown Street, Liverpool L69 7ZB, UK
| | - Derek A Mann
- Fibrosis Laboratory, Liver Group, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Michael R H White
- Systems Microscopy Centre, Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, UK
| | - Claire E Eyers
- Centre for Proteome Research, Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Crown Street, Liverpool L69 7ZB, UK
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Gomez JC, Dang H, Kanke M, Hagan RS, Mock JR, Kelada SNP, Sethupathy P, Doerschuk CM. Predicted effects of observed changes in the mRNA and microRNA transcriptome of lung neutrophils during S. pneumoniae pneumonia in mice. Sci Rep 2017; 7:11258. [PMID: 28900269 PMCID: PMC5595893 DOI: 10.1038/s41598-017-11638-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 08/24/2017] [Indexed: 01/01/2023] Open
Abstract
The complex role of neutrophils in modulating the inflammatory response is increasingly appreciated. Our studies profiled the expression of mRNAs and microRNAs (miRs) in lung neutrophils in mice during S. pneumoniae pneumonia and performed in depth in silico analyses. Lung neutrophils were isolated 24 hours after intratracheal instillation of PBS or S. pneumoniae, and differentially expressed (DE) mRNAs and miRs were identified. Lung neutrophils from mice with S. pneumoniae pneumonia contained 4127 DE mRNAs, 36% of which were upregulated at least 2-fold. During pneumonia, lung neutrophils increase expression of pattern recognition receptors, receptors for inflammatory mediators, transcription factors including NF-κB and AP-1, Nrf2 targets, cytokines, chemokines and other inflammatory mediators. Interestingly, neutrophils responded to Type I interferons, whereas they both produced and responded to Type II interferon. Expression of regulators of the inflammatory and immune response was verified at the mRNA and protein level. Of approximately 1100 miRs queried, 31 increased and 67 decreased more than 2-fold in neutrophils from S. pneumoniae pneumonia. Network analyses of potential DE miR-target DE mRNA interactions revealed candidate key regulatory miRs. Thus, S. pneumoniae modulates mRNA and miR expression by lung neutrophils, increasing their ability to respond and facilitating host defense.
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Affiliation(s)
- John C Gomez
- Center for Airways Disease, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Cystic Fibrosis/Pulmonary Research and Treatment Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Hong Dang
- Cystic Fibrosis/Pulmonary Research and Treatment Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Matthew Kanke
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Robert S Hagan
- Center for Airways Disease, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Jason R Mock
- Center for Airways Disease, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Samir N P Kelada
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Praveen Sethupathy
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Claire M Doerschuk
- Center for Airways Disease, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Cystic Fibrosis/Pulmonary Research and Treatment Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
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29
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Uhm M, Bazuine M, Zhao P, Chiang SH, Xiong T, Karunanithi S, Chang L, Saltiel AR. Phosphorylation of the exocyst protein Exo84 by TBK1 promotes insulin-stimulated GLUT4 trafficking. Sci Signal 2017; 10:10/471/eaah5085. [PMID: 28325821 DOI: 10.1126/scisignal.aah5085] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Insulin stimulates glucose uptake through the translocation of the glucose transporter GLUT4 to the plasma membrane. The exocyst complex tethers GLUT4-containing vesicles to the plasma membrane, a process that requires the binding of the G protein (heterotrimeric guanine nucleotide-binding protein) RalA to the exocyst complex. We report that upon activation of RalA, the protein kinase TBK1 phosphorylated the exocyst subunit Exo84. Knockdown of TBK1 blocked insulin-stimulated glucose uptake and GLUT4 translocation; knockout of TBK1 in adipocytes blocked insulin-stimulated glucose uptake; and ectopic overexpression of a kinase-inactive mutant of TBK1 reduced insulin-stimulated glucose uptake in 3T3-L1 adipocytes. The phosphorylation of Exo84 by TBK1 reduced its affinity for RalA and enabled its release from the exocyst. Overexpression of a kinase-inactive mutant of TBK1 blocked the dissociation of the TBK1/RalA/exocyst complex, and treatment of 3T3-L1 adipocytes with specific inhibitors of TBK1 reduced the rate of complex dissociation. Introduction of phosphorylation-mimicking or nonphosphorylatable mutant forms of Exo84 blocked insulin-stimulated GLUT4 translocation. Thus, these data indicate that TBK1 controls GLUT4 vesicle engagement and disengagement from the exocyst, suggesting that exocyst components not only constitute a tethering complex for the GLUT4 vesicle but also act as "gatekeepers" controlling vesicle fusion at the plasma membrane.
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Affiliation(s)
- Maeran Uhm
- Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA.,Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA.,Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Merlijn Bazuine
- Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA
| | - Peng Zhao
- Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA.,Institute for Diabetes and Metabolic Health, Departments of Medicine and Pharmacology, University of California, San Diego, La Jolla, CA 92093, USA
| | - Shian-Huey Chiang
- Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA
| | - Tingting Xiong
- Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA
| | | | - Louise Chang
- Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA
| | - Alan R Saltiel
- Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA. .,Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA.,Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI 48109, USA.,Institute for Diabetes and Metabolic Health, Departments of Medicine and Pharmacology, University of California, San Diego, La Jolla, CA 92093, USA
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30
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Frank-Bertoncelj M, Klein K, Gay S. Interplay between genetic and epigenetic mechanisms in rheumatoid arthritis. Epigenomics 2017; 9:493-504. [PMID: 28322583 DOI: 10.2217/epi-2016-0142] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Genetic and environmental factors contribute to the risk for rheumatoid arthritis (RA), with epigenetics serving as a possible interface through which risk factors contribute to RA. High-throughput technologies for interrogating genome and epigenome, and the availability of genetic and epigenetic datasets across a diversity of cell types, enable the identification of candidate causal genetic variants for RA to study their function in core RA processes. To date, RA risk variants were studied in the immune cells but not joint resident cells, for example, synovial fibroblasts. Synovial fibroblasts from different joints are distinct, anatomically specialized cells, defined by joint-specific transcriptomes, epigenomes and phenotypes. Cell type-specific analysis of epigenetic changes, together with genetic fine mapping and interrogation of chromatin 3D interactions may identify new disease relevant pathways, potential therapeutic targets and biomarkers for RA progression or therapy response.
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Affiliation(s)
| | - Kerstin Klein
- Center of Experimental Rheumatology, University Hospital Zurich, Switzerland
| | - Steffen Gay
- Center of Experimental Rheumatology, University Hospital Zurich, Switzerland
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31
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Bist P, Kim SSY, Pulloor NK, McCaffrey K, Nair SK, Liu Y, Lin R, Krishnan MN. ArfGAP Domain-Containing Protein 2 (ADAP2) Integrates Upstream and Downstream Modules of RIG-I Signaling and Facilitates Type I Interferon Production. Mol Cell Biol 2017; 37:e00537-16. [PMID: 27956705 PMCID: PMC5335504 DOI: 10.1128/mcb.00537-16] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 10/28/2016] [Accepted: 12/06/2016] [Indexed: 01/15/2023] Open
Abstract
Transcription of type I interferon genes during RNA virus infection requires signal communication between several pattern recognition receptor (PRR)-adaptor complexes located at distinct subcellular membranous compartments and a central cytoplasmic TBK1-interferon regulatory factor 3 (IRF3) kinase-transcription factor module. However, how the cell integrates signal transduction through spatially distinct modules of antiviral signaling pathways is less defined. RIG-I is a major cytosolic PRR involved in the control of several RNA viruses. Here we identify ArfGAP domain-containing protein 2 (ADAP2) as a key novel scaffolding protein that integrates different modules of the RIG-I pathway, located at distinct subcellular locations, and mediates cellular antiviral type I interferon production. ADAP2 served to bridge the mitochondrial membrane-bound upstream RIG-I adaptor MAVS and the downstream cytosolic complex of NEMO (regulatory subunit of TBK1), TBK1, and IRF3, leading to IRF3 phosphorylation. Furthermore, independently, ADAP2 also functioned as a major orchestrator of the interaction of TBK1 with NEMO and IRF3. Mutational and in vitro cell-free reconstituted RIG-I signaling assay-based analyses identified that the ArfGAP domain of ADAP2 mediates the interferon response. TRAF3 acted as a trigger for ADAP2 to recruit RIG-I pathway component proteins into a single macromolecular complex. This study provides important novel insights into the assembly and integration of different modules of antiviral signaling cascades.
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Affiliation(s)
- Pradeep Bist
- Program on Emerging Infectious Diseases, Duke-NUS Graduate Medical School, Singapore, Singapore
| | - Susana Soo-Yeon Kim
- Program on Emerging Infectious Diseases, Duke-NUS Graduate Medical School, Singapore, Singapore
| | - Niyas Kudukil Pulloor
- Program on Emerging Infectious Diseases, Duke-NUS Graduate Medical School, Singapore, Singapore
| | - Kathleen McCaffrey
- Program on Emerging Infectious Diseases, Duke-NUS Graduate Medical School, Singapore, Singapore
| | - Sajith Kumar Nair
- Program on Emerging Infectious Diseases, Duke-NUS Graduate Medical School, Singapore, Singapore
| | - Yiliu Liu
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Canada
| | - Rongtuan Lin
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Canada
| | - Manoj N Krishnan
- Program on Emerging Infectious Diseases, Duke-NUS Graduate Medical School, Singapore, Singapore
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32
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Identification of TBK1 complexes required for the phosphorylation of IRF3 and the production of interferon β. Biochem J 2017; 474:1163-1174. [PMID: 28159912 PMCID: PMC5350611 DOI: 10.1042/bcj20160992] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 01/23/2017] [Accepted: 02/03/2017] [Indexed: 01/01/2023]
Abstract
The double-stranded RNA mimetic poly(I:C) and lipopolysaccharide (LPS) activate Toll-like receptors 3 (TLR3) and TLR4, respectively, triggering the activation of TANK (TRAF family member-associated NF-κB activator)-binding kinase 1 (TBK1) complexes, the phosphorylation of interferon regulatory factor 3 (IRF3) and transcription of the interferon β (IFNβ) gene. Here, we demonstrate that the TANK–TBK1 and optineurin (OPTN)–TBK1 complexes control this pathway. The poly(I:C)- or LPS-stimulated phosphorylation of IRF3 at Ser396 and production of IFNβ were greatly reduced in bone marrow-derived macrophages (BMDMs) from TANK knockout (KO) mice crossed to knockin mice expressing the ubiquitin-binding-defective OPTN[D477N] mutant. In contrast, IRF3 phosphorylation and IFNβ production were not reduced significantly in BMDM from OPTN[D477N] knockin mice and only reduced partially in TANK KO BMDM. The TLR3/TLR4-dependent phosphorylation of IRF3 and IFNβ gene transcription were not decreased in macrophages from OPTN[D477N] crossed to mice deficient in IκB kinase ε, a TANK-binding kinase related to TBK1. In contrast with the OPTN–TBK1 complex, TBK1 associated with OPTN[D477N] did not undergo phosphorylation at Ser172 in response to poly(I:C) or LPS, indicating that the interaction of ubiquitin chains with OPTN is required to activate OPTN–TBK1 in BMDM. The phosphorylation of IRF3 and IFNβ production induced by Sendai virus infection were unimpaired in BMDM from TANK KO × OPTN[D477N] mice, suggesting that other/additional TBK1 complexes control the RIG-I-like receptor-dependent production of IFNβ. Finally, we present evidence that, in human HACAT cells, the poly(I:C)-dependent phosphorylation of TBK1 at Ser172 involves a novel TBK1-activating kinase(s).
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33
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Protein Kinase R Mediates the Inflammatory Response Induced by Hyperosmotic Stress. Mol Cell Biol 2017; 37:MCB.00521-16. [PMID: 27920257 DOI: 10.1128/mcb.00521-16] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 12/01/2016] [Indexed: 12/25/2022] Open
Abstract
High extracellular osmolarity results in a switch from an adaptive to an inflammatory gene expression program. We show that hyperosmotic stress activates the protein kinase R (PKR) independently of its RNA-binding domain. In turn, PKR stimulates nuclear accumulation of nuclear factor κB (NF-κB) p65 species phosphorylated at serine-536, which is paralleled by the induction of a subset of inflammatory NF-κB p65-responsive genes, including inducible nitric oxide synthase (iNOS), interleukin-6 (IL-6), and IL-1β. The PKR-mediated hyperinduction of iNOS decreases cell survival in mouse embryonic fibroblasts via mechanisms involving nitric oxide (NO) synthesis and posttranslational modification of proteins. Moreover, we demonstrate that the PKR inhibitor C16 ameliorates both iNOS amplification and disease-induced phenotypic breakdown of the intestinal epithelial barrier caused by an increase in extracellular osmolarity induced by dextran sodium sulfate (DSS) in vivo Collectively, these findings indicate that PKR activation is an essential part of the molecular switch from adaptation to inflammation in response to hyperosmotic stress.
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Law PJ, Sud A, Mitchell JS, Henrion M, Orlando G, Lenive O, Broderick P, Speedy HE, Johnson DC, Kaiser M, Weinhold N, Cooke R, Sunter NJ, Jackson GH, Summerfield G, Harris RJ, Pettitt AR, Allsup DJ, Carmichael J, Bailey JR, Pratt G, Rahman T, Pepper C, Fegan C, von Strandmann EP, Engert A, Försti A, Chen B, Filho MIDS, Thomsen H, Hoffmann P, Noethen MM, Eisele L, Jöckel KH, Allan JM, Swerdlow AJ, Goldschmidt H, Catovsky D, Morgan GJ, Hemminki K, Houlston RS. Genome-wide association analysis of chronic lymphocytic leukaemia, Hodgkin lymphoma and multiple myeloma identifies pleiotropic risk loci. Sci Rep 2017; 7:41071. [PMID: 28112199 PMCID: PMC5253627 DOI: 10.1038/srep41071] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 12/14/2016] [Indexed: 02/08/2023] Open
Abstract
B-cell malignancies (BCM) originate from the same cell of origin, but at different maturation stages and have distinct clinical phenotypes. Although genetic risk variants for individual BCMs have been identified, an agnostic, genome-wide search for shared genetic susceptibility has not been performed. We explored genome-wide association studies of chronic lymphocytic leukaemia (CLL, N = 1,842), Hodgkin lymphoma (HL, N = 1,465) and multiple myeloma (MM, N = 3,790). We identified a novel pleiotropic risk locus at 3q22.2 (NCK1, rs11715604, P = 1.60 × 10-9) with opposing effects between CLL (P = 1.97 × 10-8) and HL (P = 3.31 × 10-3). Eight established non-HLA risk loci showed pleiotropic associations. Within the HLA region, Ser37 + Phe37 in HLA-DRB1 (P = 1.84 × 10-12) was associated with increased CLL and HL risk (P = 4.68 × 10-12), and reduced MM risk (P = 1.12 × 10-2), and Gly70 in HLA-DQB1 (P = 3.15 × 10-10) showed opposing effects between CLL (P = 3.52 × 10-3) and HL (P = 3.41 × 10-9). By integrating eQTL, Hi-C and ChIP-seq data, we show that the pleiotropic risk loci are enriched for B-cell regulatory elements, as well as an over-representation of binding of key B-cell transcription factors. These data identify shared biological pathways influencing the development of CLL, HL and MM. The identification of these risk loci furthers our understanding of the aetiological basis of BCMs.
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Affiliation(s)
- Philip J. Law
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Amit Sud
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Jonathan S. Mitchell
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Marc Henrion
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Giulia Orlando
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Oleg Lenive
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Peter Broderick
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Helen E. Speedy
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - David C. Johnson
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
| | - Martin Kaiser
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
| | - Niels Weinhold
- Myeloma Institute for Research and Therapy, University of Arkansas for Medical Sciences, Little Rock, USA
| | - Rosie Cooke
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Nicola J. Sunter
- Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, UK
| | - Graham H. Jackson
- Department of Haematology, Royal Victoria Infirmary, Newcastle upon Tyne, UK
| | - Geoffrey Summerfield
- Department of Haematology, Queen Elizabeth Hospital, Gateshead, Newcastle upon Tyne, UK
| | - Robert J. Harris
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, UK
| | - Andrew R. Pettitt
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, UK
| | - David J. Allsup
- Queens Centre for Haematology and Oncology, Castle Hill Hospital, Hull and East Yorkshire NHS Trust, UK
| | - Jonathan Carmichael
- Queens Centre for Haematology and Oncology, Castle Hill Hospital, Hull and East Yorkshire NHS Trust, UK
| | - James R. Bailey
- Queens Centre for Haematology and Oncology, Castle Hill Hospital, Hull and East Yorkshire NHS Trust, UK
| | - Guy Pratt
- Department of Haematology, Birmingham Heartlands Hospital, Birmingham, UK
| | - Thahira Rahman
- Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, UK
| | - Chris Pepper
- Department of Haematology, School of Medicine, Cardiff University, Cardiff, UK
| | - Chris Fegan
- Cardiff and Vale National Health Service Trust, Heath Park, Cardiff, UK
| | | | - Andreas Engert
- Department of Internal Medicine, University Hospital of Cologne, Cologne, Germany
| | - Asta Försti
- Division of Molecular Genetic Epidemiology, German Cancer Research Centre, Heidelberg, Germany
- Centre for Primary Health Care Research, Lund University, Malmö, Sweden
| | - Bowang Chen
- Division of Molecular Genetic Epidemiology, German Cancer Research Centre, Heidelberg, Germany
| | | | - Hauke Thomsen
- Division of Molecular Genetic Epidemiology, German Cancer Research Centre, Heidelberg, Germany
| | - Per Hoffmann
- Institute of Human Genetics, University of Bonn, Germany
- Division of Medical Genetics, Department of Biomedicine, University of Basel, Switzerland
| | - Markus M. Noethen
- Institute of Human Genetics, University of Bonn, Germany
- Department of Genomics, Life & Brain Center, University of Bonn, Germany
| | | | | | - James M. Allan
- Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, UK
| | - Anthony J. Swerdlow
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
- Division of Breast Cancer Research, The Institute of Cancer Research, London, UK
| | - Hartmut Goldschmidt
- Department of Internal Medicine V, University of Heidelberg, Heidelberg, Germany
- National Center of Tumor Diseases, Heidelberg, Germany
| | - Daniel Catovsky
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
| | - Gareth J. Morgan
- Myeloma Institute for Research and Therapy, University of Arkansas for Medical Sciences, Little Rock, USA
| | - Kari Hemminki
- Division of Molecular Genetic Epidemiology, German Cancer Research Centre, Heidelberg, Germany
- Centre for Primary Health Care Research, Lund University, Malmö, Sweden
| | - Richard S. Houlston
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
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Triptolide Combined with Radiotherapy for the Treatment of Nasopharyngeal Carcinoma via NF-κB-Related Mechanism. Int J Mol Sci 2016; 17:ijms17122139. [PMID: 27999372 PMCID: PMC5187939 DOI: 10.3390/ijms17122139] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 12/12/2016] [Accepted: 12/15/2016] [Indexed: 11/17/2022] Open
Abstract
Advanced nasopharyngeal carcinoma (NPC) has a poor prognosis because of the lack of an effective treatment. Here we explored the efficiency and the molecular mechanisms of combined treatment with triptolide and ionizing radiation for treating NPC. Human nasopharyngeal carcinoma (CNE) cells were treated with triptolide, ionizing radiation, or triptolide plus ionizing radiation in vitro. Tumor potency was examined in an in vivo CNE cell xenograft mouse model, which was treated as above. Our results demonstrated that triptolide caused a significant reduction in cell growth and colony number, and induced a marked apoptosis that was further enhanced with increasing doses of ionizing radiation. Combination treatment synergistically reduced tumor weight and volume without obvious toxicity. Western blot analysis in vitro and in vivo showed that triptolide induced apoptotic protein Bax expression and inhibited phosph-NF-κB p65, Bcl-2 and VEGF proteins without affecting other NF-κB related protein expression. In conclusion, our findings revealed that triptolide plus ionizing radiation had synergistic anti-tumor and anti-angiogenesis effects in NPC via down-regulating NF-κB p65 phosphorylation. The combination therapy may provide novel mechanism insights into inhibit NPC.
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Scheidel J, Amstein L, Ackermann J, Dikic I, Koch I. In Silico Knockout Studies of Xenophagic Capturing of Salmonella. PLoS Comput Biol 2016; 12:e1005200. [PMID: 27906974 PMCID: PMC5131900 DOI: 10.1371/journal.pcbi.1005200] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 10/16/2016] [Indexed: 11/19/2022] Open
Abstract
The degradation of cytosol-invading pathogens by autophagy, a process known as xenophagy, is an important mechanism of the innate immune system. Inside the host, Salmonella Typhimurium invades epithelial cells and resides within a specialized intracellular compartment, the Salmonella-containing vacuole. A fraction of these bacteria does not persist inside the vacuole and enters the host cytosol. Salmonella Typhimurium that invades the host cytosol becomes a target of the autophagy machinery for degradation. The xenophagy pathway has recently been discovered, and the exact molecular processes are not entirely characterized. Complete kinetic data for each molecular process is not available, so far. We developed a mathematical model of the xenophagy pathway to investigate this key defense mechanism. In this paper, we present a Petri net model of Salmonella xenophagy in epithelial cells. The model is based on functional information derived from literature data. It comprises the molecular mechanism of galectin-8-dependent and ubiquitin-dependent autophagy, including regulatory processes, like nutrient-dependent regulation of autophagy and TBK1-dependent activation of the autophagy receptor, OPTN. To model the activation of TBK1, we proposed a new mechanism of TBK1 activation, suggesting a spatial and temporal regulation of this process. Using standard Petri net analysis techniques, we found basic functional modules, which describe different pathways of the autophagic capture of Salmonella and reflect the basic dynamics of the system. To verify the model, we performed in silico knockout experiments. We introduced a new concept of knockout analysis to systematically compute and visualize the results, using an in silico knockout matrix. The results of the in silico knockout analyses were consistent with published experimental results and provide a basis for future investigations of the Salmonella xenophagy pathway.
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Affiliation(s)
- Jennifer Scheidel
- Molecular Bioinformatics, Institute of Computer Science, Johann Wolfgang Goethe-University Frankfurt am Main, Frankfurt am Main, Germany
| | - Leonie Amstein
- Molecular Bioinformatics, Institute of Computer Science, Johann Wolfgang Goethe-University Frankfurt am Main, Frankfurt am Main, Germany
| | - Jörg Ackermann
- Molecular Bioinformatics, Institute of Computer Science, Johann Wolfgang Goethe-University Frankfurt am Main, Frankfurt am Main, Germany
| | - Ivan Dikic
- Institute of Biochemistry II, Johann Wolfgang Goethe-University Hospital Frankfurt am Main, Frankfurt am Main, Germany
- Buchmann Institute for Molecular Life Sciences, Frankfurt am Main, Germany
| | - Ina Koch
- Molecular Bioinformatics, Institute of Computer Science, Johann Wolfgang Goethe-University Frankfurt am Main, Frankfurt am Main, Germany
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Pourcelot M, Zemirli N, Silva Da Costa L, Loyant R, Garcin D, Vitour D, Munitic I, Vazquez A, Arnoult D. The Golgi apparatus acts as a platform for TBK1 activation after viral RNA sensing. BMC Biol 2016; 14:69. [PMID: 27538435 PMCID: PMC4991008 DOI: 10.1186/s12915-016-0292-z] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 08/05/2016] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND After viral infection and the stimulation of some pattern-recognition receptors, TANK-binding kinase I (TBK1) is activated by K63-linked polyubiquitination followed by trans-autophosphorylation. While the activated TBK1 induces type I interferon production by phosphorylating the transcription factor IRF3, the precise molecular mechanisms underlying TBK1 activation remain unclear. RESULTS We report here the localization of the ubiquitinated and phosphorylated active form of TBK1 to the Golgi apparatus after the stimulation of RIG-I-like receptors (RLRs) or Toll-like receptor-3 (TLR3), due to TBK1 K63-linked ubiquitination on lysine residues 30 and 401. The ubiquitin-binding protein optineurin (OPTN) recruits ubiquitinated TBK1 to the Golgi apparatus, leading to the formation of complexes in which TBK1 is activated by trans-autophosphorylation. Indeed, OPTN deficiency in various cell lines and primary cells impairs TBK1 targeting to the Golgi apparatus and its activation following RLR or TLR3 stimulation. Interestingly, the Bluetongue virus NS3 protein binds OPTN at the Golgi apparatus, neutralizing its activity and thereby decreasing TBK1 activation and downstream signaling. CONCLUSIONS Our results highlight an unexpected role of the Golgi apparatus in innate immunity as a key subcellular gateway for TBK1 activation after RNA virus infection.
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Affiliation(s)
- Marie Pourcelot
- INSERM, UMR_S 1197, Hôpital Paul Brousse, Villejuif, France
- Université Paris-Saclay, Paris, France
- Equipe Labellisée Ligue contre le Cancer, Villejuif, France
| | - Naima Zemirli
- INSERM, UMR_S 1197, Hôpital Paul Brousse, Villejuif, France
- Université Paris-Saclay, Paris, France
- Equipe Labellisée Ligue contre le Cancer, Villejuif, France
| | - Leandro Silva Da Costa
- INSERM, UMR_S 1197, Hôpital Paul Brousse, Villejuif, France
- Université Paris-Saclay, Paris, France
- Equipe Labellisée Ligue contre le Cancer, Villejuif, France
| | - Roxane Loyant
- INSERM, UMR_S 1197, Hôpital Paul Brousse, Villejuif, France
- Université Paris-Saclay, Paris, France
- Equipe Labellisée Ligue contre le Cancer, Villejuif, France
| | - Dominique Garcin
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Damien Vitour
- ANSES, INRA, ENVA, UPEC, UMR_1161 Virology, LabEx IBEID, Maisons-Alfort, France
| | - Ivana Munitic
- Laboratory of Molecular Immunology, Department of Biotechnology, University of Rijeka, Rijeka, Croatia
| | - Aimé Vazquez
- INSERM, UMR_S 1197, Hôpital Paul Brousse, Villejuif, France
- Université Paris-Saclay, Paris, France
- Equipe Labellisée Ligue contre le Cancer, Villejuif, France
| | - Damien Arnoult
- INSERM, UMR_S 1197, Hôpital Paul Brousse, Villejuif, France.
- Université Paris-Saclay, Paris, France.
- Equipe Labellisée Ligue contre le Cancer, Villejuif, France.
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Thurston TL, Boyle KB, Allen M, Ravenhill BJ, Karpiyevich M, Bloor S, Kaul A, Noad J, Foeglein A, Matthews SA, Komander D, Bycroft M, Randow F. Recruitment of TBK1 to cytosol-invading Salmonella induces WIPI2-dependent antibacterial autophagy. EMBO J 2016; 35:1779-92. [PMID: 27370208 PMCID: PMC5010046 DOI: 10.15252/embj.201694491] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 05/24/2016] [Indexed: 01/01/2023] Open
Abstract
Mammalian cells deploy autophagy to defend their cytosol against bacterial invaders. Anti‐bacterial autophagy relies on the core autophagy machinery, cargo receptors, and “eat‐me” signals such as galectin‐8 and ubiquitin that label bacteria as autophagy cargo. Anti‐bacterial autophagy also requires the kinase TBK1, whose role in autophagy has remained enigmatic. Here we show that recruitment of WIPI2, itself essential for anti‐bacterial autophagy, is dependent on the localization of catalytically active TBK1 to the vicinity of cytosolic bacteria. Experimental manipulation of TBK1 recruitment revealed that engagement of TBK1 with any of a variety of Salmonella‐associated “eat‐me” signals, including host‐derived glycans and K48‐ and K63‐linked ubiquitin chains, suffices to restrict bacterial proliferation. Promiscuity in recruiting TBK1 via independent signals may buffer TBK1 functionality from potential bacterial antagonism and thus be of evolutionary advantage to the host.
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Affiliation(s)
- Teresa Lm Thurston
- Division of Protein and Nucleic Acid Chemistry, MRC Laboratory of Molecular Biology, Cambridge, UK MRC Centre for Molecular Bacteriology and Infection, Imperial College London, London, UK
| | - Keith B Boyle
- Division of Protein and Nucleic Acid Chemistry, MRC Laboratory of Molecular Biology, Cambridge, UK
| | - Mark Allen
- Division of Structural Studies, MRC Laboratory of Molecular Biology, Cambridge, UK
| | - Benjamin J Ravenhill
- Division of Protein and Nucleic Acid Chemistry, MRC Laboratory of Molecular Biology, Cambridge, UK
| | - Maryia Karpiyevich
- Division of Protein and Nucleic Acid Chemistry, MRC Laboratory of Molecular Biology, Cambridge, UK
| | - Stuart Bloor
- Division of Protein and Nucleic Acid Chemistry, MRC Laboratory of Molecular Biology, Cambridge, UK
| | - Annie Kaul
- Division of Protein and Nucleic Acid Chemistry, MRC Laboratory of Molecular Biology, Cambridge, UK
| | - Jessica Noad
- Division of Protein and Nucleic Acid Chemistry, MRC Laboratory of Molecular Biology, Cambridge, UK
| | - Agnes Foeglein
- Division of Protein and Nucleic Acid Chemistry, MRC Laboratory of Molecular Biology, Cambridge, UK
| | - Sophie A Matthews
- MRC Centre for Molecular Bacteriology and Infection, Imperial College London, London, UK
| | - David Komander
- Division of Protein and Nucleic Acid Chemistry, MRC Laboratory of Molecular Biology, Cambridge, UK
| | - Mark Bycroft
- Division of Structural Studies, MRC Laboratory of Molecular Biology, Cambridge, UK
| | - Felix Randow
- Division of Protein and Nucleic Acid Chemistry, MRC Laboratory of Molecular Biology, Cambridge, UK Department of Medicine, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK
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Chen LT, Hu MM, Xu ZS, Liu Y, Shu HB. MSX1 Modulates RLR-Mediated Innate Antiviral Signaling by Facilitating Assembly of TBK1-Associated Complexes. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2016; 197:199-207. [PMID: 27194789 DOI: 10.4049/jimmunol.1600039] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 04/22/2016] [Indexed: 12/16/2023]
Abstract
Recognition of viral dsRNA by the retinoic acid-inducible gene-1-like receptors (RLRs) triggers signaling cascades that lead to activation of the TBK1 kinase and transcription factor IFN regulatory factor 3, induction of downstream antiviral genes, and innate antiviral responses. In this study, we identified muscle segment homeobox1 (MSX1) as an important modulator of RLR-mediated signaling pathways. Knockdown or knockout of MSX1 significantly impaired Sendai virus-triggered activation of TBK1 and IFN regulatory factor 3, induction of downstream antiviral genes, and cellular antiviral responses. Interestingly, MSX1 was translocated from the nucleus to cytoplasm, particularly mitochondria upon infection of Sendai virus. Biochemcially, MSX1 was important for assembly of TBK1/IKK-related kinase-associated protein 1/TNFR-associated factor-associated NF-κB activator complexes. Our results suggest that MSX1 is an important component of RLR-mediated signaling and reveal mechanisms on innate immune responses against RNA viruses.
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Affiliation(s)
- Liu-Ting Chen
- College of Life Sciences, Medical Research Institute, Collaborative Innovation Center for Viral Immunology, Wuhan University, Wuhan 430072, China
| | - Ming-Ming Hu
- College of Life Sciences, Medical Research Institute, Collaborative Innovation Center for Viral Immunology, Wuhan University, Wuhan 430072, China
| | - Zhi-Sheng Xu
- College of Life Sciences, Medical Research Institute, Collaborative Innovation Center for Viral Immunology, Wuhan University, Wuhan 430072, China
| | - Yu Liu
- College of Life Sciences, Medical Research Institute, Collaborative Innovation Center for Viral Immunology, Wuhan University, Wuhan 430072, China
| | - Hong-Bing Shu
- College of Life Sciences, Medical Research Institute, Collaborative Innovation Center for Viral Immunology, Wuhan University, Wuhan 430072, China
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Artigaud S, Lacroix C, Richard J, Flye-Sainte-Marie J, Bargelloni L, Pichereau V. Proteomic responses to hypoxia at different temperatures in the great scallop (Pecten maximus). PeerJ 2015; 3:e871. [PMID: 25861557 PMCID: PMC4389274 DOI: 10.7717/peerj.871] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 03/11/2015] [Indexed: 12/29/2022] Open
Abstract
Hypoxia and hyperthermia are two connected consequences of the ongoing global change and constitute major threats for coastal marine organisms. In the present study, we used a proteomic approach to characterize the changes induced by hypoxia in the great scallop, Pecten maximus, subjected to three different temperatures (10 °C, 18 °C and 25 °C). We did not observe any significant change induced by hypoxia in animals acclimated at 10 °C. At 18 °C and 25 °C, 16 and 11 protein spots were differentially accumulated between normoxia and hypoxia, respectively. Moreover, biochemical data (octopine dehydrogenase activity and arginine assays) suggest that animals grown at 25 °C switched their metabolism towards anaerobic metabolism when exposed to both normoxia and hypoxia, suggesting that this temperature is out of the scallops’ optimal thermal window. The 11 proteins identified with high confidence by mass spectrometry are involved in protein modifications and signaling (e.g., CK2, TBK1), energy metabolism (e.g., ENO3) or cytoskeleton (GSN), giving insights into the thermal-dependent response of scallops to hypoxia.
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Affiliation(s)
- Sébastien Artigaud
- Laboratoire des Sciences de l'Environnement Marin, LEMAR UMR 6539 CNRS/UBO/IRD/Ifremer, Université de Bretagne Occidentale, Institut Universitaire Européen de la Mer , Plouzané , France
| | - Camille Lacroix
- Laboratoire des Sciences de l'Environnement Marin, LEMAR UMR 6539 CNRS/UBO/IRD/Ifremer, Université de Bretagne Occidentale, Institut Universitaire Européen de la Mer , Plouzané , France
| | - Joëlle Richard
- Laboratoire des Sciences de l'Environnement Marin, LEMAR UMR 6539 CNRS/UBO/IRD/Ifremer, Université de Bretagne Occidentale, Institut Universitaire Européen de la Mer , Plouzané , France
| | - Jonathan Flye-Sainte-Marie
- Laboratoire des Sciences de l'Environnement Marin, LEMAR UMR 6539 CNRS/UBO/IRD/Ifremer, Université de Bretagne Occidentale, Institut Universitaire Européen de la Mer , Plouzané , France
| | - Luca Bargelloni
- Department of Comparative Biomedicine and Food Science-Agripolis-Viale dell'Università 16, Legnaro , Padova , Italy
| | - Vianney Pichereau
- Laboratoire des Sciences de l'Environnement Marin, LEMAR UMR 6539 CNRS/UBO/IRD/Ifremer, Université de Bretagne Occidentale, Institut Universitaire Européen de la Mer , Plouzané , France
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Singh V, Gupta D, Arora R. NF-kB as a key player in regulation of cellular radiation responses and identification of radiation countermeasures. Discoveries (Craiova) 2015; 3:e35. [PMID: 32309561 PMCID: PMC7159829 DOI: 10.15190/d.2015.27] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Nuclear factor (NF)-κB is a transcription factor that plays significant role in immunity, cellular survival and inhibition of apoptosis, through the induction of genetic networks. Depending on the stimulus and the cell type, the members of NF-κB related family (RelA, c-Rel, RelB, p50, and p52), forms different combinations of homo and hetero-dimers. The activated complexes (Es) translocate into the nucleus and bind to the 10bp κB site of promoter region of target genes in stimulus specific manner. In response to radiation, NF-κB is known to reduce cell death by promoting the expression of anti-apoptotic proteins and activation of cellular antioxidant defense system. Constitutive activation of NF-κB associated genes in tumour cells are known to enhance radiation resistance, whereas deletion in mice results in hypersensitivity to IR-induced GI damage. NF-κB is also known to regulate the production of a wide variety of cytokines and chemokines, which contribute in enhancing cell proliferation and tissue regeneration in various organs, such as the GI crypts stem cells, bone marrow etc., following exposure to IR. Several other cytokines are also known to exert potent pro-inflammatory effects that may contribute to the increase of tissue damage following exposure to ionizing radiation. Till date there are a series of molecules or group of compounds that have been evaluated for their radio-protective potential, and very few have reached clinical trials. The failure or less success of identified agents in humans could be due to their reduced radiation protection efficacy.
In this review we have considered activation of NF-κB as a potential marker in screening of radiation countermeasure agents (RCAs) and cellular radiation responses. Moreover, we have also focused on associated mechanisms of activation of NF-κB signaling and their specified family member activation with respect to stimuli. Furthermore, we have categorized their regulated gene expressions and their function in radiation response or modulation. In addition, we have discussed some recently developed radiation countermeasures in relation to NF-κB activation
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Affiliation(s)
- Vijay Singh
- Division of Radiation Biosciences, Institute of Nuclear Medicine & Allied Sciences, Brig SK Mazumdar Marg, Timarpur, Delhi, India
| | - Damodar Gupta
- Division of Radiation Biosciences, Institute of Nuclear Medicine & Allied Sciences, Brig SK Mazumdar Marg, Timarpur, Delhi, India
| | - Rajesh Arora
- Division of Radiation Biosciences, Institute of Nuclear Medicine & Allied Sciences, Brig SK Mazumdar Marg, Timarpur, Delhi, India
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SUMO modification of TBK1 at the adaptor-binding C-terminal coiled-coil domain contributes to its antiviral activity. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2014; 1853:136-43. [PMID: 25409927 DOI: 10.1016/j.bbamcr.2014.10.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 10/05/2014] [Accepted: 10/07/2014] [Indexed: 01/01/2023]
Abstract
The non-canonical IKK kinase TBK1 serves as an important signal transmitter of the antiviral interferon response, but is also involved in the regulation of further processes such as autophagy. The activity of TBK1 is regulated by posttranslational modifications comprising phosphorylation and ubiquitination. This study identifies SUMOylation as a novel posttranslational TBK1 modification. TBK1 kinase activity is required to allow the attachment of SUMO1 or SUMO2/3 proteins. Since TBK1 does not bind to the E2 enzyme Ubc9, this modification most likely proceeds via trans-SUMOylation. Mass spectrometry allowed identifying K694 as the SUMO acceptor site, a residue located in the C-terminal coiled-coil domain which is exclusively responsible for the association with the adaptor proteins NAP1, Sintbad and TANK. SUMO modification at K694 contributes to the antiviral function of TBK1 and accordingly the viral protein Gam1 antagonizes this posttranslational modification.
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43
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Shanmugasundaram K, Nayak B, Shim EH, Livi CB, Block K, Sudarshan S. The oncometabolite fumarate promotes pseudohypoxia through noncanonical activation of NF-κB signaling. J Biol Chem 2014; 289:24691-9. [PMID: 25028521 DOI: 10.1074/jbc.m114.568162] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Inactivating mutations of the gene encoding the tricarboxylic acid cycle enzyme fumarate hydratase (FH) have been linked to an aggressive variant of hereditary kidney cancer (hereditary leiomyomatosis and renal cell cancer). These tumors accumulate markedly elevated levels of fumarate. Fumarate is among a growing list of oncometabolites identified in cancers with mutations of genes involved in intermediary metabolism. FH-deficient tumors are notable for their pronounced accumulation of the transcription factor hypoxia inducible factor-1α (HIF-1α) and aggressive behavior. To date, HIF-1α accumulation in hereditary leiomyomatosis and renal cell cancer tumors is thought to result from fumarate-dependent inhibition of prolyl hydroxylases and subsequent evasion from von Hippel-Lindau-dependent degradation. Here, we demonstrate a novel mechanism by which fumarate promotes HIF-1α mRNA and protein accumulation independent of the von Hippel-Lindau pathway. Here we demonstrate that fumarate promotes p65 phosphorylation and p65 accumulation at the HIF-1α promoter through non-canonical signaling via the upstream Tank binding kinase 1 (TBK1). Consistent with these data, inhibition of the TBK1/p65 axis blocks HIF-1α accumulation in cellular models of FH loss and markedly reduces cell invasion of FH-deficient RCC cancer cells. Collectively, our data demonstrate a novel mechanism by which pseudohypoxia is promoted in FH-deficient tumors and identifies TBK1 as a novel putative therapeutic target for the treatment of aggressive fumarate-driven tumors.
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Affiliation(s)
| | | | - Eun-Hee Shim
- the Department of Urology, University of Alabama, Birmingham, Alabama 35294, and
| | - Carolina B Livi
- Molecular Medicine, University of Texas Health Sciences Center, San Antonio, Texas 78229
| | - Karen Block
- From the Departments of Medicine and the South Texas Veterans Health Care System, Audie L. Murphy Memorial Hospital Division, San Antonio, Texas 78229
| | - Sunil Sudarshan
- the Department of Urology, University of Alabama, Birmingham, Alabama 35294, and
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Ramirez IA, Caverly LL, Kalikin LM, Goldsmith AM, Lewis TC, Burke DT, LiPuma JJ, Sajjan US, Hershenson MB. Differential responses to rhinovirus- and influenza-associated pulmonary exacerbations in patients with cystic fibrosis. Ann Am Thorac Soc 2014; 11:554-61. [PMID: 24641803 PMCID: PMC4225796 DOI: 10.1513/annalsats.201310-346oc] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 01/26/2014] [Indexed: 12/25/2022] Open
Abstract
RATIONALE The mechanism by which viruses cause exacerbations of chronic airway disease and the capacity of patients with cystic fibrosis (CF) to respond to viral infection are not precisely known. OBJECTIVES To determine the antiviral response to infection in patients with CF. METHODS Sputum was collected from patients with CF with respiratory exacerbation. Viruses were detected in multiplex polymerase chain reaction (PCR)-based assays. Gene expression of 84 antiviral response genes was measured, using a focused quantitative PCR gene array. MEASUREMENTS AND MAIN RESULTS We examined 36 samples from 23 patients with respiratory exacerbation. Fourteen samples tested virus-positive and 22 virus-negative. When we compared exacerbations associated with rhinovirus (RV, n = 9) and influenza (n = 5) with virus-negative specimens, we found distinct patterns of antiviral gene expression. RV was associated with greater than twofold induction of five genes, including those encoding the monocyte-attracting chemokines CXCL10, CXCL11, and CXCL9. Influenza was associated with overexpression of 20 genes, including those encoding the cytokines tumor necrosis factor and IL-12; the kinases MEK, TBK-1, and STAT-1; the apoptosis proteins caspase-8 and caspase-10; the influenza double-stranded RNA receptor RIG-I and its downstream effector MAVS; and pyrin, an IFN-stimulated protein involved in influenza resistance. CONCLUSIONS We conclude that virus-induced exacerbations of CF are associated with immune responses tailored to specific infections. Influenza induced a more potent response consisting of inflammation, whereas RV infection had a pronounced effect on chemokine expression. As far as we are aware, this study is the first to compare specific responses to different viruses in live patients with chronic airway disease.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Marc B. Hershenson
- Department of Pediatrics and Communicable Diseases
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, Michigan
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Cytosolic-DNA-mediated, STING-dependent proinflammatory gene induction necessitates canonical NF-κB activation through TBK1. J Virol 2014; 88:5328-41. [PMID: 24600004 DOI: 10.1128/jvi.00037-14] [Citation(s) in RCA: 497] [Impact Index Per Article: 49.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
UNLABELLED STING (stimulator of interferon genes) is known to control the induction of innate immune genes in response to the recognition of cytosolic DNA species, including the genomes of viruses such as herpes simplex virus 1 (HSV-1). However, while STING is essential for protection of the host against numerous DNA pathogens, sustained STING activity can lead to lethal inflammatory disease. It is known that STING utilizes interferon regulatory factor 3 (IRF3) and nuclear factor κB (NF-κB) pathways to exert its effects, although the signal transduction mechanisms remain to be clarified fully. Here we demonstrate that in addition to the activation of these pathways, potent induction of the Jun N-terminal protein kinase/stress-activated protein kinase (JNK/SAPK) pathway was similarly observed in response to STING activation by double-stranded DNA (dsDNA). Furthermore, TANK-binding kinase 1 (TBK1) associated with STING was found to facilitate dsDNA-mediated canonical activation of NF-κB as well as IRF3 to promote proinflammatory gene transcription. The triggering of NF-κB function was noted to require TRAF6 activation. Our findings detail a novel dsDNA-mediated NF-κB activation pathway facilitated through a STING-TRAF6-TBK1 axis and suggest a target for therapeutic intervention to plausibly stimulate antiviral activity or, alternatively, avert dsDNA-mediated inflammatory disease. IMPORTANCE The IKK complex, which is composed of two catalytic subunits, IKKα and IKKβ, has been suggested to be essential for the activation of canonical NF-κB signaling in response to various stimuli, including cytokines (e.g., interleukin-1α [IL-1α] and tumor necrosis factor alpha [TNF-α]), Toll-like receptor (TLR) ligands (e.g., lipopolysaccharide [LPS]), and dsRNAs derived from viruses, or a synthetic analog. STING has been identified as a critical signaling molecule required for the detection of cytosolic dsDNAs derived from pathogens and viruses. However, little is known about how cytosolic dsDNA triggers NF-κB signaling. In the present study, we demonstrate that TBK1, identified as an IKK-related kinase, may predominantly control the activation of NF-κB in response to dsDNA signaling via STING through the IKKαβ activation loop. Thus, our results establish TBK1 as a downstream kinase controlling dsDNA-mediated IRF3 and NF-κB signaling dependent on STING.
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Shostak K, Patrascu F, Göktuna SI, Close P, Borgs L, Nguyen L, Olivier F, Rammal A, Brinkhaus H, Bentires-Alj M, Marine JC, Chariot A. MDM2 restrains estrogen-mediated AKT activation by promoting TBK1-dependent HPIP degradation. Cell Death Differ 2014; 21:811-24. [PMID: 24488098 DOI: 10.1038/cdd.2014.2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 12/18/2013] [Accepted: 12/23/2013] [Indexed: 12/25/2022] Open
Abstract
Restoration of p53 tumor suppressor function through inhibition of its interaction and/or enzymatic activity of its E3 ligase, MDM2, is a promising therapeutic approach to treat cancer. However, because the MDM2 targetome extends beyond p53, MDM2 inhibition may also cause unwanted activation of oncogenic pathways. Accordingly, we identified the microtubule-associated HPIP, a positive regulator of oncogenic AKT signaling, as a novel MDM2 substrate. MDM2-dependent HPIP degradation occurs in breast cancer cells on its phosphorylation by the estrogen-activated kinase TBK1. Importantly, decreasing Mdm2 gene dosage in mouse mammary epithelial cells potentiates estrogen-dependent AKT activation owing to HPIP stabilization. In addition, we identified HPIP as a novel p53 transcriptional target, and pharmacological inhibition of MDM2 causes p53-dependent increase in HPIP transcription and also prevents HPIP degradation by turning off TBK1 activity. Our data indicate that p53 reactivation through MDM2 inhibition may result in ectopic AKT oncogenic activity by maintaining HPIP protein levels.
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Affiliation(s)
- K Shostak
- 1] Interdisciplinary Cluster for Applied Genoproteomics, GIGA-Research, University of Liège, Liège, Belgium [2] Unit of Medical Chemistry, GIGA-Signal Transduction, GIGA-R, University of Liège, Liège, Belgium
| | - F Patrascu
- 1] Interdisciplinary Cluster for Applied Genoproteomics, GIGA-Research, University of Liège, Liège, Belgium [2] Unit of Medical Chemistry, GIGA-Signal Transduction, GIGA-R, University of Liège, Liège, Belgium
| | - S I Göktuna
- 1] Interdisciplinary Cluster for Applied Genoproteomics, GIGA-Research, University of Liège, Liège, Belgium [2] Unit of Medical Chemistry, GIGA-Signal Transduction, GIGA-R, University of Liège, Liège, Belgium
| | - P Close
- 1] Interdisciplinary Cluster for Applied Genoproteomics, GIGA-Research, University of Liège, Liège, Belgium [2] Unit of Medical Chemistry, GIGA-Signal Transduction, GIGA-R, University of Liège, Liège, Belgium
| | - L Borgs
- 1] Interdisciplinary Cluster for Applied Genoproteomics, GIGA-Research, University of Liège, Liège, Belgium [2] Developmental Neurobiology Unit, GIGA-Neurosciences, GIGA-R, University of Liège, Liège, Belgium
| | - L Nguyen
- 1] Interdisciplinary Cluster for Applied Genoproteomics, GIGA-Research, University of Liège, Liège, Belgium [2] Developmental Neurobiology Unit, GIGA-Neurosciences, GIGA-R, University of Liège, Liège, Belgium [3] Walloon Excellence in Life Sciences and Biotechnology (WELBIO), Wallonia, Belgium
| | - F Olivier
- 1] Interdisciplinary Cluster for Applied Genoproteomics, GIGA-Research, University of Liège, Liège, Belgium [2] Animal Facility, University of Liege, CHU, Sart-Tilman, Liège 4000, Belgium
| | - A Rammal
- 1] Interdisciplinary Cluster for Applied Genoproteomics, GIGA-Research, University of Liège, Liège, Belgium [2] Unit of Medical Chemistry, GIGA-Signal Transduction, GIGA-R, University of Liège, Liège, Belgium
| | - H Brinkhaus
- Mechanisms of Cancer, Friedrich Miescher Institute for Biomedical Research (FMI), Basel, Switzerland
| | - M Bentires-Alj
- Mechanisms of Cancer, Friedrich Miescher Institute for Biomedical Research (FMI), Basel, Switzerland
| | - J-C Marine
- 1] Center for Human Genetics, KU Leuven, Leuven, Belgium [2] Center for the biology of disease, VIB, KU Leuven, Leuven, Belgium
| | - A Chariot
- 1] Interdisciplinary Cluster for Applied Genoproteomics, GIGA-Research, University of Liège, Liège, Belgium [2] Unit of Medical Chemistry, GIGA-Signal Transduction, GIGA-R, University of Liège, Liège, Belgium [3] Walloon Excellence in Life Sciences and Biotechnology (WELBIO), Wallonia, Belgium
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Abstract
TLRs (Toll-like receptors) detect invading micro-organisms which triggers the production of pro-inflammatory mediators needed to combat infection. Although these signalling networks are required to protect the host against invading pathogens, dysregulation of TLR pathways contributes to the development of chronic inflammatory diseases and autoimmune disorders. Molecular mechanisms have therefore evolved to restrict the strength of TLR signalling. In the present review, I highlight recent advances in our understanding of the protein kinase networks required to suppress the innate immune response by negatively regulating TLR signalling and/or promoting the secretion of anti-inflammatory cytokines. I present my discoveries on the key roles of the IKK (inhibitor of nuclear factor κB kinase)-related kinases and the SIKs (salt-inducible kinases) in limiting innate immunity within the greater context of the field.
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Role of Ca2+/calmodulin-dependent kinase II-IRAK1 interaction in LMP1-induced NF-κB activation. Mol Cell Biol 2013; 34:325-34. [PMID: 24248603 DOI: 10.1128/mcb.00912-13] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
We have previously reported that interleukin-1 (IL-1) receptor-associated kinase (IRAK1) is essential for Epstein-Barr virus (EBV) latent infection membrane protein 1 (LMP1)-induced p65/RelA serine 536 phosphorylation and NF-κB activation but not for IκB kinase α (IKKα) or IKKβ activation (Y. J. Song, K. Y. Jen, V. Soni, E. Kieff, and E. Cahir-McFarland, Proc. Natl. Acad. Sci. U. S. A. 103:2689-2694, 2006, doi:10.1073/pnas.0511096103). Since the kinase activity of IRAK1 is not required for LMP1-induced NF-κB activation, IRAK1 is proposed to function as a scaffold protein to recruit a p65/RelA serine 536 kinase(s) to enhance NF-κB-dependent transcriptional activity. We now report that Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) interacts with IRAK1 and is critical for LMP1-induced p65/RelA serine 536 phosphorylation and NF-κB activation. CaMKII bound the death domain of IRAK1 and directly phosphorylated p65/RelA at serine 536 in vitro. Downregulation of CaMKII activity or expression significantly reduced LMP1-induced p65/RelA serine 536 phosphorylation and NF-κB activation. Furthermore, LMP1-induced CaMKII activation and p65/RelA serine 536 phosphorylation were significantly reduced in IRAK1 knockout (KO) mouse embryonic fibroblasts (MEFs). Thus, IRAK1 may recruit and activate CaMKII, which phosphorylates p65/RelA serine 536 to enhance the transactivation potential of NF-κB in LMP1-induced NF-κB activation pathway.
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McBride WJ, Kimpel MW, McClintick JN, Ding ZM, Hyytia P, Colombo G, Liang T, Edenberg HJ, Lumeng L, Bell RL. Gene expression within the extended amygdala of 5 pairs of rat lines selectively bred for high or low ethanol consumption. Alcohol 2013; 47:517-29. [PMID: 24157127 DOI: 10.1016/j.alcohol.2013.08.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Revised: 08/30/2013] [Accepted: 08/30/2013] [Indexed: 11/25/2022]
Abstract
The objectives of this study were to determine innate differences in gene expression in 2 regions of the extended amygdala between 5 different pairs of lines of male rats selectively bred for high or low ethanol consumption: a) alcohol-preferring (P) vs. alcohol-non-preferring (NP) rats, b) high-alcohol-drinking (HAD) vs. low-alcohol-drinking (LAD) rats (replicate line-pairs 1 and 2), c) ALKO alcohol (AA) vs. nonalcohol (ANA) rats, and d) Sardinian alcohol-preferring (sP) vs. Sardinian alcohol-nonpreferring (sNP) rats, and then to determine if these differences are common across the line-pairs. Microarray analysis revealed up to 1772 unique named genes in the nucleus accumbens shell (AcbSh) and 494 unique named genes in the central nucleus of the amygdala (CeA) that significantly differed [False Discovery Rate (FDR) = 0.10; fold-change at least 1.2] in expression between the individual line-pairs. Analysis using Gene Ontology (GO) and Ingenuity Pathways information indicated significant categories and networks in common for up to 3 or 4 line-pairs, but not for all 5 line-pairs. However, there were almost no individual genes in common within these categories and networks. ANOVAs of the combined data for the 5 line-pairs indicated 1014 and 731 significant (p < 0.01) differences in expression of named genes in the AcbSh and CeA, respectively. There were 4-6 individual named genes that significantly differed across up to 3 line-pairs in both regions; only 1 gene (Gsta4 in the CeA) differed in as many as 4 line-pairs. Overall, the findings suggest that a) some biological categories or networks (e.g., cell-to-cell signaling, cellular stress response, cellular organization, etc.) may be in common for subsets of line-pairs within either the AcbSh or CeA, and b) regulation of different genes and/or combinations of multiple biological systems may be contributing to the disparate alcohol drinking behaviors of these line-pairs.
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50
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Li J, Huang J, Jeong JH, Park SJ, Wei R, Peng J, Luo Z, Chen YT, Feng Y, Luo JL. Selective TBK1/IKKi dual inhibitors with anticancer potency. Int J Cancer 2013; 134:1972-80. [PMID: 24150799 DOI: 10.1002/ijc.28507] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 08/29/2013] [Accepted: 09/16/2013] [Indexed: 12/25/2022]
Abstract
Increasing evidence suggests that the noncanonical IKKs play critical roles in tumor genesis and development, leading to the notion that noncanonical IKKs may be good targets for cancer therapy. Here, we demonstrate that although TBK1 is not overexpressed or constitutively activated in some tumor cells, targeting IKKi induces the activation of TBK1. Therefore, simultaneously targeting both kinases is necessary to efficiently suppress tumor cell proliferation. We show that three TBK1/IKKi dual inhibitors, which are based on a structurally rigid 2-amino-4-(3'-cyano-4'-pyrrolidine)phenyl-pyrimidine scaffold, potently inhibit cell viability in human breast, prostate and oral cancer cell lines. Treatment with these TBK1/IKKi dual inhibitors significantly impairs tumor development in xenograft and allograft mouse models. The anticancer function of these inhibitors may be partially due to their suppression of TBK1/IKKi-mediated AKT phosphorylation and VEGF expression. Most importantly, these TBK1/IKKi dual inhibitors have drug-like properties including low molecular weight, low cytochrome P450 inhibition and high metabolic stability. Therefore, our studies provide proof of concept for further drug discovery efforts that may lead to novel strategies and new therapeutics for the treatment of human cancer.
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Affiliation(s)
- Jijia Li
- Department of Stomatology, Xiangya Hospital, Central South University, Changsha, Hunan, China; Department of Cancer Biology, The Scripps Research Institute, Jupiter, FL
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