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Moltó E, Pintado C, Louzada RA, Bernal-Mizrachi E, Andrés A, Gallardo N, Bonzon-Kulichenko E. Unbiased Phosphoproteome Mining Reveals New Functional Sites of Metabolite-Derived PTMs Involved in MASLD Development. Int J Mol Sci 2023; 24:16172. [PMID: 38003361 PMCID: PMC10671570 DOI: 10.3390/ijms242216172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 11/01/2023] [Accepted: 11/06/2023] [Indexed: 11/26/2023] Open
Abstract
Post-translational modifications (PTMs) of proteins are paramount in health and disease. Phosphoproteome analysis by enrichment techniques is becoming increasingly attractive for biomedical research. Recent findings show co-enrichment of other phosphate-containing biologically relevant PTMs, but these results were obtained by closed searches focused on the modifications sought. Open searches are a breakthrough in high-throughput PTM analysis (OS-PTM), identifying practically all PTMs detectable by mass spectrometry, even unknown ones, with their modified sites, in a hypothesis-free and deep manner. Here we reanalyze liver phosphoproteome by OS-PTM, demonstrating its extremely complex nature. We found extensive Lys glycerophosphorylations (pgK), as well as modification with glycerylphosphorylethanolamine on Glu (gpetE) and flavin mononucleotide on His (fmnH). The functionality of these metabolite-derived PTMs is demonstrated during metabolic dysfunction-associated steatotic liver disease (MASLD) development in mice. MASLD elicits specific alterations in pgK, epgE and fmnH in the liver, mainly on glycolytic enzymes and mitochondrial proteins, suggesting an increase in glycolysis and mitochondrial ATP production from the early insulin-resistant stages. Thus, we show new possible mechanisms based on metabolite-derived PTMs leading to intrahepatic lipid accumulation during MASLD development and reinforce phosphoproteome enrichment as a valuable tool with which to study the functional implications of a variety of low-abundant phosphate-containing PTMs in cell physiology.
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Affiliation(s)
- Eduardo Moltó
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Environmental Sciences and Biochemistry, University of Castilla-La Mancha, Avda. Carlos III s/n, 45071 Toledo, Spain
| | - Cristina Pintado
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Environmental Sciences and Biochemistry, University of Castilla-La Mancha, Avda. Carlos III s/n, 45071 Toledo, Spain
| | - Ruy Andrade Louzada
- Department of Internal Medicine, Division of Endocrinology, Diabetes and Metabolism, Miller School of Medicine, University of Miami, Miami, FL 33136, USA
| | - Ernesto Bernal-Mizrachi
- Department of Internal Medicine, Division of Endocrinology, Diabetes and Metabolism, Miller School of Medicine, University of Miami, Miami, FL 33136, USA
| | - Antonio Andrés
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Sciences and Chemical Technologies, University of Castilla-La Mancha, Avda. Camilo Jose Cela 10, 13071 Ciudad Real, Spain
| | - Nilda Gallardo
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Sciences and Chemical Technologies, University of Castilla-La Mancha, Avda. Camilo Jose Cela 10, 13071 Ciudad Real, Spain
| | - Elena Bonzon-Kulichenko
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Environmental Sciences and Biochemistry, University of Castilla-La Mancha, Avda. Carlos III s/n, 45071 Toledo, Spain
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2
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RP105 plays a cardioprotective role in myocardial ischemia reperfusion injury by regulating the Toll‑like receptor 2/4 signaling pathways. Mol Med Rep 2020; 22:1373-1381. [PMID: 32626996 PMCID: PMC7339787 DOI: 10.3892/mmr.2020.11242] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 11/20/2019] [Indexed: 12/13/2022] Open
Abstract
The revascularization of blood vessels after myocardial infarction can lead to serious myocardial damage. Previous studies showed that radioprotective 105 kDa protein (RP105) is a specific negative regulator of myocardial ischemia reperfusion injury (MIRI). RP105 can modulate the Toll-like receptor (TLR)2/TLR4 signaling pathways. However, the synergistic effect of TLR2/4 regulated by RP105 during MIRI requires further investigation. To determine this effect, a MIRI model was established in rats in the present study. The expression of RP105 was depleted by transfecting RP105-siRNA and then detected using western blotting. Furthermore, the myocardium tissue was stained with the hematoxylin and eosin staining. Knockdown of RP105 promoted the activity of serum myocardial enzymes during MIRI and increased myocardial infarction. The present results indicated that knockdown of RP105 activated the TLR2/4 signaling pathway by modulating the myeloid differentiation primary response 88 and NF-κB signaling pathways. Furthermore, decreased expression of RP105 promoted myocardial cell apoptosis, which induced the damage of myocardial ischemic reperfusion. The present results suggested both TLR2 and TLR4 as key targets of RP105, thus RP105 may be a promising candidate to facilitate the development of novel therapeutic strategies for MIRI.
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3
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Chen ML, Becraft ED, Pachiadaki M, Brown JM, Jarett JK, Gasol JM, Ravin NV, Moser DP, Nunoura T, Herndl GJ, Woyke T, Stepanauskas R. Hiding in Plain Sight: The Globally Distributed Bacterial Candidate Phylum PAUC34f. Front Microbiol 2020; 11:376. [PMID: 32226422 PMCID: PMC7081726 DOI: 10.3389/fmicb.2020.00376] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 02/20/2020] [Indexed: 12/31/2022] Open
Abstract
Bacterial candidate phylum PAUC34f was originally discovered in marine sponges and is widely considered to be composed of sponge symbionts. Here, we report 21 single amplified genomes (SAGs) of PAUC34f from a variety of environments, including the dark ocean, lake sediments, and a terrestrial aquifer. The diverse origins of the SAGs and the results of metagenome fragment recruitment suggest that some PAUC34f lineages represent relatively abundant, free-living cells in environments other than sponge microbiomes, including the deep ocean. Both phylogenetic and biogeographic patterns, as well as genome content analyses suggest that PAUC34f associations with hosts evolved independently multiple times, while free-living lineages of PAUC34f are distinct and relatively abundant in a wide range of environments.
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Affiliation(s)
- Michael L Chen
- Bigelow Laboratory for Ocean Sciences, East Boothbay, ME, United States.,Department of Biology, Williams College, Williamstown, MA, United States
| | - Eric D Becraft
- Bigelow Laboratory for Ocean Sciences, East Boothbay, ME, United States.,Department of Biology, University of North Alabama, Florence, AL, United States
| | - Maria Pachiadaki
- Bigelow Laboratory for Ocean Sciences, East Boothbay, ME, United States.,Department of Biology, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
| | - Julia M Brown
- Bigelow Laboratory for Ocean Sciences, East Boothbay, ME, United States
| | - Jessica K Jarett
- U.S. Department of Energy Joint Genome Institute, Berkeley, CA, United States
| | - Josep M Gasol
- Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), Barcelona, Spain.,Centre for Marine Ecosystems Research, Edith Cowan University, Joondalup, WA, Australia
| | - Nikolai V Ravin
- Institute of Bioengineering, Research Center of Biotechnology, Russian Academy of Sciences, Moscow, Russia
| | - Duane P Moser
- Division of Hydrologic Sciences, Desert Research Institute, Las Vegas, NV, United States
| | - Takuro Nunoura
- Research Center for Bioscience and Nanoscience (CeBN), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan
| | - Gerhard J Herndl
- Department of Limnology and Bio-Oceanography, University of Vienna, Vienna, Austria.,Department of Marine Microbiology and Biogeochemistry, Royal Netherlands Institute for Sea Research, Utrecht University, Den Burg, Netherlands
| | - Tanja Woyke
- U.S. Department of Energy Joint Genome Institute, Berkeley, CA, United States
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Makrecka‐Kuka M, Liepinsh E, Murray AJ, Lemieux H, Dambrova M, Tepp K, Puurand M, Käämbre T, Han WH, Goede P, O'Brien KA, Turan B, Tuncay E, Olgar Y, Rolo AP, Palmeira CM, Boardman NT, Wüst RCI, Larsen TS. Altered mitochondrial metabolism in the insulin-resistant heart. Acta Physiol (Oxf) 2020; 228:e13430. [PMID: 31840389 DOI: 10.1111/apha.13430] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 12/05/2019] [Accepted: 12/06/2019] [Indexed: 12/12/2022]
Abstract
Obesity-induced insulin resistance and type 2 diabetes mellitus can ultimately result in various complications, including diabetic cardiomyopathy. In this case, cardiac dysfunction is characterized by metabolic disturbances such as impaired glucose oxidation and an increased reliance on fatty acid (FA) oxidation. Mitochondrial dysfunction has often been associated with the altered metabolic function in the diabetic heart, and may result from FA-induced lipotoxicity and uncoupling of oxidative phosphorylation. In this review, we address the metabolic changes in the diabetic heart, focusing on the loss of metabolic flexibility and cardiac mitochondrial function. We consider the alterations observed in mitochondrial substrate utilization, bioenergetics and dynamics, and highlight new areas of research which may improve our understanding of the cause and effect of cardiac mitochondrial dysfunction in diabetes. Finally, we explore how lifestyle (nutrition and exercise) and pharmacological interventions can prevent and treat metabolic and mitochondrial dysfunction in diabetes.
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Affiliation(s)
| | | | - Andrew J. Murray
- Department of Physiology, Development and Neuroscience University of Cambridge Cambridge UK
| | - Hélène Lemieux
- Department of Medicine Faculty Saint‐Jean, Women and Children's Health Research Institute University of Alberta Edmonton AB Canada
| | | | - Kersti Tepp
- National Institute of Chemical Physics and Biophysics Tallinn Estonia
| | - Marju Puurand
- National Institute of Chemical Physics and Biophysics Tallinn Estonia
| | - Tuuli Käämbre
- National Institute of Chemical Physics and Biophysics Tallinn Estonia
| | - Woo H. Han
- Faculty Saint‐Jean University of Alberta Edmonton AB Canada
| | - Paul Goede
- Laboratory of Endocrinology Amsterdam Gastroenterology & Metabolism Amsterdam University Medical Center University of Amsterdam Amsterdam The Netherlands
| | - Katie A. O'Brien
- Department of Physiology, Development and Neuroscience University of Cambridge Cambridge UK
| | - Belma Turan
- Laboratory of Endocrinology Amsterdam Gastroenterology & Metabolism Amsterdam University Medical Center University of Amsterdam Amsterdam The Netherlands
| | - Erkan Tuncay
- Department of Biophysics Faculty of Medicine Ankara University Ankara Turkey
| | - Yusuf Olgar
- Department of Biophysics Faculty of Medicine Ankara University Ankara Turkey
| | - Anabela P. Rolo
- Department of Life Sciences University of Coimbra and Center for Neurosciences and Cell Biology University of Coimbra Coimbra Portugal
| | - Carlos M. Palmeira
- Department of Life Sciences University of Coimbra and Center for Neurosciences and Cell Biology University of Coimbra Coimbra Portugal
| | - Neoma T. Boardman
- Cardiovascular Research Group Department of Medical Biology UiT the Arctic University of Norway Tromso Norway
| | - Rob C. I. Wüst
- Laboratory for Myology Department of Human Movement Sciences Faculty of Behavioural and Movement Sciences Amsterdam Movement Sciences Vrije Universiteit Amsterdam Amsterdam The Netherlands
| | - Terje S. Larsen
- Cardiovascular Research Group Department of Medical Biology UiT the Arctic University of Norway Tromso Norway
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Alí A, Boutjdir M, Aromolaran AS. Cardiolipotoxicity, Inflammation, and Arrhythmias: Role for Interleukin-6 Molecular Mechanisms. Front Physiol 2019; 9:1866. [PMID: 30666212 PMCID: PMC6330352 DOI: 10.3389/fphys.2018.01866] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 12/11/2018] [Indexed: 12/12/2022] Open
Abstract
Fatty acid infiltration of the myocardium, acquired in metabolic disorders (obesity, type-2 diabetes, insulin resistance, and hyperglycemia) is critically associated with the development of lipotoxic cardiomyopathy. According to a recent Presidential Advisory from the American Heart Association published in 2017, the current average dietary intake of saturated free-fatty acid (SFFA) in the US is 11–12%, which is significantly above the recommended <10%. Increased levels of circulating SFFAs (or lipotoxicity) may represent an unappreciated link that underlies increased vulnerability to cardiac dysfunction. Thus, an important objective is to identify novel targets that will inform pharmacological and genetic interventions for cardiomyopathies acquired through excessive consumption of diets rich in SFFAs. However, the molecular mechanisms involved are poorly understood. The increasing epidemic of metabolic disorders strongly implies an undeniable and critical need to further investigate SFFA mechanisms. A rapidly emerging and promising target for modulation by lipotoxicity is cytokine secretion and activation of pro-inflammatory signaling pathways. This objective can be advanced through fundamental mechanisms of cardiac electrical remodeling. In this review, we discuss cardiac ion channel modulation by SFFAs. We further highlight the contribution of downstream signaling pathways involving toll-like receptors and pathological increases in pro-inflammatory cytokines. Our expectation is that if we understand pathological remodeling of major cardiac ion channels from a perspective of lipotoxicity and inflammation, we may be able to develop safer and more effective therapies that will be beneficial to patients.
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Affiliation(s)
- Alessandra Alí
- Cardiovascular Research Program, VA New York Harbor Healthcare System, Brooklyn, NY, United States.,Department of Medicine, State University of New York Downstate Medical Center, Brooklyn, NY, United States.,Department of Cell Biology, State University of New York Downstate Medical Center, Brooklyn, NY, United States.,Department of Pharmacology, State University of New York Downstate Medical Center, Brooklyn, NY, United States.,Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Mohamed Boutjdir
- Cardiovascular Research Program, VA New York Harbor Healthcare System, Brooklyn, NY, United States.,Department of Medicine, State University of New York Downstate Medical Center, Brooklyn, NY, United States.,Department of Cell Biology, State University of New York Downstate Medical Center, Brooklyn, NY, United States.,Department of Pharmacology, State University of New York Downstate Medical Center, Brooklyn, NY, United States.,Department of Medicine, New York University School of Medicine, New York, NY, United States
| | - Ademuyiwa S Aromolaran
- Cardiovascular Research Program, VA New York Harbor Healthcare System, Brooklyn, NY, United States.,Department of Medicine, State University of New York Downstate Medical Center, Brooklyn, NY, United States.,Department of Cell Biology, State University of New York Downstate Medical Center, Brooklyn, NY, United States.,Department of Pharmacology, State University of New York Downstate Medical Center, Brooklyn, NY, United States
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6
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Bondeva T, Schindler C, Schindler K, Wolf G. MORG1 +/- mice are protected from histological renal damage and inflammation in a murine model of endotoxemia. BMC Nephrol 2018; 19:29. [PMID: 29402223 PMCID: PMC5800025 DOI: 10.1186/s12882-018-0826-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 01/21/2018] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The MAPK-organizer 1 (MORG1) play a scaffold function in the MAPK and/or the PHD3 signalling paths. Recently, we reported that MORG1+/- mice are protected from renal injury induced by systemic hypoxia and acute renal ischemia-reperfusion injury via increased hypoxia-inducible factors (HIFs). Here, we explore whether MORG1 heterozygosity could attenuate renal injury in a murine model of lipopolysaccharide (LPS) induced endotoxemia. METHODS Endotoxemia was induced in mice by an intraperitoneal (i.p) application of 5 mg/kg BW LPS. The renal damage was estimated by periodic acid Schiff's staining; renal injury was evaluated by detection of urinary and plasma levels of neutrophil gelatinase-associated lipocalin and albumin/creatinine ratio via ELISAs. Renal mRNA expression was assessed by real-time PCR, whereas the protein expression was determined by immunohistochemistry or Western blotting. RESULTS LPS administration increased tubular injury, microalbuminuria, IL-6 plasma levels and renal TNF-α expression in MORG1 +/+ mice. This was accompanied with enhanced infiltration of the inflammatory T-cells in renal tissue and activation of the NF-κB transcription factors. In contrast, endotoxemic MORG1 +/- showed significantly less tubular injury, reduced plasma IL-6 levels, significantly decreased renal TNF-α expression and T-cells infiltration. In support, the renal levels of activated caspase-3 were lower in endotoxemic MORG1 +/- mice compared with endotoxemic MORG1 +/+ mice. Interestingly, LPS application induced a significantly higher accumulation of renal HIF-2α in the kidneys of MORG1+/- mice than in wild-type mice, accompanied with a diminished phosphorylation of IκB-α and IKK α,β and decreased iNOS mRNA in the renal tissues of the LPS-challenged MORG1+/- mice, indicating an inhibition of the NF-κB transcriptional activation. CONCLUSIONS MORG1 heterozygosity protects against histological renal damage and shows anti-inflammatory effects in a murine endotoxemia model through modulation of HIF-2α stabilisation and/or simultaneous inhibition of the NF-κB signalling. Here, we show for the first time that MORG1 scaffold could represent the missing link between innate immunity and inflammation.
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Affiliation(s)
- Tzvetanka Bondeva
- Department of Internal Medicine III, Jena University Hospital, Am Klinikum 1, D-07740 Jena, Germany
| | - Claudia Schindler
- Department of Internal Medicine III, Jena University Hospital, Am Klinikum 1, D-07740 Jena, Germany
- Centre for Sepsis Control and Care (CSCC), Jena University Hospital, Jena, Germany
| | - Katrin Schindler
- Department of Internal Medicine III, Jena University Hospital, Am Klinikum 1, D-07740 Jena, Germany
- Centre for Sepsis Control and Care (CSCC), Jena University Hospital, Jena, Germany
| | - Gunter Wolf
- Department of Internal Medicine III, Jena University Hospital, Am Klinikum 1, D-07740 Jena, Germany
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7
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Wu Q, Yu S, Chen J, Li Y, Gao Y. Downregulation of STRAP promotes tumor growth and metastasis in hepatocellular carcinoma via reducing PTEN level. IUBMB Life 2017; 70:120-128. [PMID: 29283497 DOI: 10.1002/iub.1707] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Accepted: 12/14/2017] [Indexed: 01/26/2023]
Abstract
The serine-threonine kinase receptor-associated protein (STRAP) has been implicated in multiple human cancers. However, its expression and function are currently unclear and controversial in different tissue types. In the present study, we report that aberrant downregulation of STRAP in hepatocellular carcinoma (HCC) facilitated tumor cell growth and metastasis in a phosphatase and tensin homologue (PTEN)-dependent manner. Immunohistochemical analysis and quantitative real-time polymerase chain reaction results indicated that STRAP was frequently downregulated in HCC samples. Functionally, knockdown of STRAP by RNA inference in HCC cells promoted proliferation and migration in vitro and tumorigenicity and lung metastasis in vivo. Through detecting the expression of some tumor-related genes using western blot analysis, we found the tumor suppressor PTEN was decreased upon STRAP silencing. Further analyses demonstrated that silenced STRAP led to PTEN protein degradation. Immunohistochemical analysis revealed that STRAP expression was closely associated with PTEN expression in 30 cases of HCC samples. These findings strongly suggest that STRAP plays an inhibitory role in HCC via regulating PTEN expression and could be a potential therapeutic target for this disease. © 2017 IUBMB Life, 70(2):120-128, 2018.
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Affiliation(s)
- Qiong Wu
- Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Shijun Yu
- Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jingde Chen
- Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yandong Li
- Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,Shanghai East Hospital, Tongji University School of Medicine, Research Center for Translational Medicine, Shanghai, China
| | - Yong Gao
- Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
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Huh HD, Lee E, Shin J, Park B, Lee S. STRAP positively regulates TLR3-triggered signaling pathway. Cell Immunol 2017; 318:55-60. [PMID: 28651742 DOI: 10.1016/j.cellimm.2017.06.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 06/13/2017] [Accepted: 06/19/2017] [Indexed: 10/19/2022]
Abstract
Toll-like receptor (TLR) signaling drives the innate immune response by activating nuclear factor-κB (NF-κB) and interferon regulatory factor (IRF). We have previously shown that STRAP interacts with TAK1 and IKKα along with NF-κB subunit p65, leading to the activation of pro-inflammatory cytokines. However, the roles of STRAP in TRIF/TBK1-mediated TLR3 activation and the subsequent type I interferon (IFN) production are not fully elucidated. Here, we demonstrate that STRAP acts as a scaffold protein in TLR3-triggered signaling. STRAP strongly interacts with TBK1 and IRF3, which enhances IFN-β production. As a consequence, STRAP knockdown reduces the level of both pro-inflammatory cytokine and IFN in TLR3 agonist-stimulated macrophages, whereas its overexpression significantly enhances production of these cytokines. Furthermore, the C-terminus of STRAP is essential for its functional activity in TLR3-mediated IL-6 and IFN-β production. These data suggest that STRAP is a positive regulator of the TLR3-meditated NF-κB and IRF signaling pathway.
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Affiliation(s)
- Hyunbin D Huh
- Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, South Korea
| | - Eunhye Lee
- Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, South Korea
| | - Jinwook Shin
- Department of Microbiology, Inha University College of Medicine, Incheon 22212, South Korea
| | - Boyoun Park
- Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, South Korea.
| | - Sungwook Lee
- Cancer Immunology Branch, Research Institute, National Cancer Center, Goyang 10408, South Korea.
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