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Tsuchiya H, Ota M, Takahashi H, Hatano H, Ogawa M, Nakajima S, Yoshihara R, Okamura T, Sumitomo S, Fujio K. Epigenetic targets of Janus kinase inhibitors are linked to genetic risks of rheumatoid arthritis. Inflamm Regen 2024; 44:29. [PMID: 38831367 PMCID: PMC11149281 DOI: 10.1186/s41232-024-00337-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Accepted: 05/15/2024] [Indexed: 06/05/2024] Open
Abstract
BACKGROUND Current strategies that target cytokines (e.g., tumor necrosis factor (TNF)-α), or signaling molecules (e.g., Janus kinase (JAK)) have advanced the management for allergies and autoimmune diseases. Nevertheless, the molecular mechanism that underpins its clinical efficacy have largely remained elusive, especially in the local tissue environment. Here, we aimed to identify the genetic, epigenetic, and immunological targets of JAK inhibitors (JAKis), focusing on their effects on synovial fibroblasts (SFs), the major local effectors associated with destructive joint inflammation in rheumatoid arthritis (RA). METHODS SFs were activated by cytokines related to inflammation in RA, and were treated with three types of JAKis or a TNF-α inhibitor (TNFi). Dynamic changes in transcriptome and chromatin accessibility were profiled across samples to identify drug targets. Furthermore, the putative targets were validated using luciferase assays and clustered regularly interspaced short palindromic repeat (CRISPR)-based genome editing. RESULTS We found that both JAKis and the TNFi targeted the inflammatory module including IL6. Conversely, specific gene signatures that were preferentially inhibited by either of the drug classes were identified. Strikingly, RA risk enhancers for CD40 and TRAF1 were distinctively regulated by JAKis and the TNFi. We performed luciferase assays and CRISPR-based genome editing, and successfully fine-mapped the single causal variants in these loci, rs6074022-CD40 and rs7021049-TRAF1. CONCLUSIONS JAKis and the TNFi had a direct impact on different RA risk enhancers, and we identified nucleotide-resolution targets for both drugs. Distinctive targets of clinically effective drugs could be useful for tailoring the application of these drugs and future design of more efficient treatment strategies.
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Affiliation(s)
- Haruka Tsuchiya
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-0033, Japan
| | - Mineto Ota
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-0033, Japan
- Department of Functional Genomics and Immunological Diseases, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-0033, Japan
| | - Haruka Takahashi
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-0033, Japan
| | - Hiroaki Hatano
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-0033, Japan
- Department of Functional Genomics and Immunological Diseases, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-0033, Japan
| | - Megumi Ogawa
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-0033, Japan
| | - Sotaro Nakajima
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-0033, Japan
| | - Risa Yoshihara
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-0033, Japan
| | - Tomohisa Okamura
- Department of Functional Genomics and Immunological Diseases, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-0033, Japan
| | - Shuji Sumitomo
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-0033, Japan
| | - Keishi Fujio
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-0033, Japan.
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Strohm L, Ubbens H, Münzel T, Daiber A, Daub S. Role of CD40(L)-TRAF signaling in inflammation and resolution—a double-edged sword. Front Pharmacol 2022; 13:995061. [PMID: 36267276 PMCID: PMC9577411 DOI: 10.3389/fphar.2022.995061] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 09/12/2022] [Indexed: 11/26/2022] Open
Abstract
Cardiovascular diseases (CVD) and cardiovascular risk factors are the leading cause of death in the world today. According to the Global Burden of Disease Study, hypertension together with ischemic heart and cerebrovascular diseases is responsible for approximately 40% of all deaths worldwide. The major pathomechanism underlying almost all CVD is atherosclerosis, an inflammatory disorder of the vascular system. Recent large-scale clinical trials demonstrated that inflammation itself is an independent cardiovascular risk factor. Specific anti-inflammatory therapy could decrease cardiovascular mortality in patients with atherosclerosis (increased markers of inflammation). Inflammation, however, can also be beneficial by conferring so-called resolution, a process that contributes to clearing damaged tissue from cell debris upon cell death and thereby represents an essential step for recovery from, e.g., ischemia/reperfusion damage. Based on these considerations, the present review highlights features of the detrimental inflammatory reactions as well as of the beneficial process of immune cell-triggered resolution. In this context, we discuss the polarization of macrophages to either M1 or M2 phenotype and critically assess the role of the CD40L-CD40-TRAF signaling cascade in atherosclerosis and its potential link to resolution. As CD40L can bind to different cellular receptors, it can initiate a broad range of inflammatory processes that may be detrimental or beneficial. Likewise, the signaling of CD40L downstream of CD40 is mainly determined by activation of TRAF1-6 pathways that again can be detrimental or beneficial. Accordingly, CD40(L)-based therapies may be Janus-faced and require sophisticated fine-tuning in order to promote cardioprotection.
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Affiliation(s)
- Lea Strohm
- Department of Cardiology, Cardiology I—Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Henning Ubbens
- Department of Cardiology, Cardiology I—Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Thomas Münzel
- Department of Cardiology, Cardiology I—Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany
| | - Andreas Daiber
- Department of Cardiology, Cardiology I—Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany
- *Correspondence: Andreas Daiber, ; Steffen Daub,
| | - Steffen Daub
- Department of Cardiology, Cardiology I—Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- *Correspondence: Andreas Daiber, ; Steffen Daub,
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Cheng T, Wu J, Xu Y, Liu C, Zhang H, Wang M. CD40/TRAF1 decreases synovial cell apoptosis in patients with rheumatoid arthritis through JNK/NF-κB pathway. J Bone Miner Metab 2022; 40:819-828. [PMID: 35960381 DOI: 10.1007/s00774-022-01350-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 06/03/2022] [Indexed: 10/15/2022]
Abstract
INTRODUCTION A genome-wide association analysis revealed a rheumatoid arthritis (RA)-risk-associated genetic locus on chromosome 9, which contained the tumor necrosis factor receptor-associated factor 1 (TRAF1). However, the detail mechanism by TRAF1 signaled to fibroblast-like synoviocytes (FLSs) apoptosis remains to be fully understood. MATERIALS AND METHODS Synovial tissue of 10 RA patients and osteoarthritis patients were obtained during joint replacement surgery. We investigated TRAF1 level and FLSs apoptosis percentage in vivo and elucidated the mechanism involved in the regulation of apoptotic process in vitro. RESULTS We proved the significant increase of TRAF1 level in FLSs of RA patients and demonstrated that TRAF1 level correlated positively with DAS28 score and negatively with FLSs apoptosis. Treatment with siTRAF1 was able to decrease MMPs levels and the phosphorylated forms of JNK/NF-κB in vitro. Moreover, JNK inhibitor could attenuate expression of MMPs and increase percentage of apoptosis in RA-FLSs, while siTRAF1 could not promote apoptosis when RA-FLSs were pretreated with JNK activator. CONCLUSIONS High levels of TRAF1 in RA synovium play an important role in the synovial hyperplasia of RA by suppressing apoptosis through activating JNK/NF-kB-dependent signaling pathways in response to the engagement of CD40.
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Affiliation(s)
- Tao Cheng
- Department of Rheumatology, The First Affiliated Hospital of Soochow University, Suzhou, 215000, China.
| | - Jian Wu
- Department of Rheumatology, The First Affiliated Hospital of Soochow University, Suzhou, 215000, China
| | - Yaozeng Xu
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, 215000, China
| | - Cuiping Liu
- Department of Rheumatology, The First Affiliated Hospital of Soochow University, Suzhou, 215000, China
| | - Huayong Zhang
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Mingjun Wang
- Department of Rheumatology, The First Affiliated Hospital of Soochow University, Suzhou, 215000, China.
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Gissler MC, Stachon P, Wolf D, Marchini T. The Role of Tumor Necrosis Factor Associated Factors (TRAFs) in Vascular Inflammation and Atherosclerosis. Front Cardiovasc Med 2022; 9:826630. [PMID: 35252400 PMCID: PMC8891542 DOI: 10.3389/fcvm.2022.826630] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 01/27/2022] [Indexed: 12/20/2022] Open
Abstract
TNF receptor associated factors (TRAFs) represent a family of cytoplasmic signaling adaptor proteins that regulate, bundle, and transduce inflammatory signals downstream of TNF- (TNF-Rs), interleukin (IL)-1-, Toll-like- (TLRs), and IL-17 receptors. TRAFs play a pivotal role in regulating cell survival and immune cell function and are fundamental regulators of acute and chronic inflammation. Lately, the inhibition of inflammation by anti-cytokine therapy has emerged as novel treatment strategy in patients with atherosclerosis. Likewise, growing evidence from preclinical experiments proposes TRAFs as potent modulators of inflammation in atherosclerosis and vascular inflammation. Yet, TRAFs show a highly complex interplay between different TRAF-family members with partially opposing and overlapping functions that are determined by the level of cellular expression, concomitant signaling events, and the context of the disease. Therefore, inhibition of specific TRAFs may be beneficial in one condition and harmful in others. Here, we carefully discuss the cellular expression and signaling events of TRAFs and evaluate their role in vascular inflammation and atherosclerosis. We also highlight metabolic effects of TRAFs and discuss the development of TRAF-based therapeutics in the future.
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Affiliation(s)
- Mark Colin Gissler
- Cardiology and Angiology, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany
- Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Peter Stachon
- Cardiology and Angiology, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany
| | - Dennis Wolf
- Cardiology and Angiology, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany
- Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
- *Correspondence: Dennis Wolf
| | - Timoteo Marchini
- Cardiology and Angiology, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany
- Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
- Universidad de Buenos Aires, CONICET, Instituto de Bioquímica y Medicina Molecular (IBIMOL), Facultad de Farmacia y Bioquímica, Buenos Aires, Argentina
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Sorrentino C, D'Antonio L, Fieni C, Ciummo SL, Di Carlo E. Colorectal Cancer-Associated Immune Exhaustion Involves T and B Lymphocytes and Conventional NK Cells and Correlates With a Shorter Overall Survival. Front Immunol 2022; 12:778329. [PMID: 34975867 PMCID: PMC8716410 DOI: 10.3389/fimmu.2021.778329] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 11/16/2021] [Indexed: 12/24/2022] Open
Abstract
Colorectal cancer (CRC) is one of the most common cancer worldwide, with a growing impact on public health and clinical management. Immunotherapy has shown promise in the treatment of advanced cancers, but needs to be improved for CRC, since only a limited fraction of patients is eligible for treatment, and most of them develop resistance due to progressive immune exhaustion. Here, we identify the transcriptional, molecular, and cellular traits of the immune exhaustion associated with CRC and determine their relationships with the patient's clinic-pathological profile. Bioinformatic analyses of RNA-sequencing data of 594 CRCs from TCGA PanCancer collection, revealed that, in the wide range of immune exhaustion genes, those coding for PD-L1, LAG3 and T-bet were associated (Cramér's V=0.3) with MSI/dMMR tumors and with a shorter overall survival (log-rank test: p=0.0004, p=0.0014 and p=0.0043, respectively), whereas high levels of expression of EOMES, TRAF1, PD-L1, FCRL4, BTLA and SIGLEC6 were associated with a shorter overall survival (log-rank test: p=0.0003, p=0.0188, p=0.0004, p=0.0303, p=0.0052 and p=0.0033, respectively), independently from the molecular subtype of CRC. Expression levels of PD-L1, PD-1, LAG3, EOMES, T-bet, and TIGIT were significantly correlated with each other and associated with genes coding for CD4+ and CD8+CD3+ T cell markers and NKp46+CD94+EOMES+T-bet+ cell markers, (OR >1.5, p<0.05), which identify a subset of group 1 innate lymphoid cells, namely conventional (c)NK cells. Expression of TRAF1 and BTLA co-occurred with both T cell markers, CD3γ, CD3δ, CD3ε, CD4, and B cell markers, CD19, CD20 and CD79a (OR >2, p<0.05). Expression of TGFβ1 was associated only with CD4 + and CD8+CD3ε+ T cell markers (odds ratio >2, p<0.05). Expression of PD-L2 and IDO1 was associated (OR >1.5, p<0.05) only with cNK cell markers, whereas expression of FCRL4, SIGLEC2 and SIGLEC6 was associated (OR >2.5; p<0.05) with CD19+CD20+CD79a+ B cell markers. Morphometric examination of immunostained CRC tissue sections, obtained from a validation cohort of 53 CRC patients, substantiated the biostatistical findings, showing that the highest percentage of immune exhaustion gene expressing cells were found in tumors from short-term survivors and that functional exhaustion is not confined to T lymphocytes, but also involves B cells, and cNK cells. This concept was strengthened by CYBERSORTx analysis, which revealed the expression of additional immune exhaustion genes, in particular FOXP1, SIRT1, BATF, NR4A1 and TOX, by subpopulations of T, B and NK cells. This study provides novel insight into the immune exhaustion landscape of CRC and emphasizes the need for a customized multi-targeted therapeutic approach to overcome resistance to current immunotherapy.
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Affiliation(s)
- Carlo Sorrentino
- Department of Medicine and Sciences of Aging, "G. d'Annunzio" University" of Chieti-Pescara, Chieti, Italy.,Anatomic Pathology and Immuno-Oncology Unit, Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Luigi D'Antonio
- Department of Medicine and Sciences of Aging, "G. d'Annunzio" University" of Chieti-Pescara, Chieti, Italy.,Anatomic Pathology and Immuno-Oncology Unit, Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Cristiano Fieni
- Department of Medicine and Sciences of Aging, "G. d'Annunzio" University" of Chieti-Pescara, Chieti, Italy.,Anatomic Pathology and Immuno-Oncology Unit, Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Stefania Livia Ciummo
- Department of Medicine and Sciences of Aging, "G. d'Annunzio" University" of Chieti-Pescara, Chieti, Italy.,Anatomic Pathology and Immuno-Oncology Unit, Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Emma Di Carlo
- Department of Medicine and Sciences of Aging, "G. d'Annunzio" University" of Chieti-Pescara, Chieti, Italy.,Anatomic Pathology and Immuno-Oncology Unit, Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
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Roy M, Singh K, Shinde A, Singh J, Mane M, Bedekar S, Tailor Y, Gohel D, Vasiyani H, Currim F, Singh R. TNF-α-induced E3 ligase, TRIM15 inhibits TNF-α-regulated NF-κB pathway by promoting turnover of K63 linked ubiquitination of TAK1. Cell Signal 2021; 91:110210. [PMID: 34871740 DOI: 10.1016/j.cellsig.2021.110210] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 11/25/2021] [Accepted: 11/30/2021] [Indexed: 01/22/2023]
Abstract
Ubiquitin E3-ligases are recruited at different steps of TNF-α-induced NF-κB activation; however, their role in temporal regulation of the pathway remains elusive. The study systematically identified TRIMs as potential feedback regulators of the TNF-α-induced NF-κB pathway. We further observed that TRIM15 is "late" response TNF-α-induced gene and inhibits the TNF-α-induced NF-κB pathway in several human cell lines. TRIM15 promotes turnover of K63-linked ubiquitin chains in a PRY/SPRY domain-dependent manner. TRIM15 interacts with TAK1 and inhibits its K63-linked ubiquitination, thus NF-κB activity. Further, TRIM15 interacts with TRIM8 and inhibits cytosolic translocation to antagonize TRIM8 modualted NF-κB. TRIM8 and TRIM15 also show functionally inverse correlation in psoriasis condition. In conclusion, TRIM15 is TNF-α-induced late response gene and inhibits TNF-α induced NF-κB pathway hence a feedback modulator to keep the proinflammatory NF-κB pathway under control.
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Affiliation(s)
- Milton Roy
- Department of Biochemistry, Faculty of Science, The MS University of Baroda, Vadodara, Gujarat 390002, India
| | - Kritarth Singh
- Department of Biochemistry, Faculty of Science, The MS University of Baroda, Vadodara, Gujarat 390002, India
| | - Anjali Shinde
- Department of Biochemistry, Faculty of Science, The MS University of Baroda, Vadodara, Gujarat 390002, India
| | - Jyoti Singh
- Department of Biochemistry, Faculty of Science, The MS University of Baroda, Vadodara, Gujarat 390002, India
| | - Minal Mane
- Department of Biochemistry, Faculty of Science, The MS University of Baroda, Vadodara, Gujarat 390002, India
| | - Sawani Bedekar
- Department of Biochemistry, Faculty of Science, The MS University of Baroda, Vadodara, Gujarat 390002, India
| | - Yamini Tailor
- Department of Biochemistry, Faculty of Science, The MS University of Baroda, Vadodara, Gujarat 390002, India
| | - Dhruv Gohel
- Department of Biochemistry, Faculty of Science, The MS University of Baroda, Vadodara, Gujarat 390002, India
| | - Hitesh Vasiyani
- Department of Biochemistry, Faculty of Science, The MS University of Baroda, Vadodara, Gujarat 390002, India
| | - Fatema Currim
- Department of Biochemistry, Faculty of Science, The MS University of Baroda, Vadodara, Gujarat 390002, India
| | - Rajesh Singh
- Department of Biochemistry, Faculty of Science, The MS University of Baroda, Vadodara, Gujarat 390002, India.
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Inhibitory feedback control of NF-κB signalling in health and disease. Biochem J 2021; 478:2619-2664. [PMID: 34269817 PMCID: PMC8286839 DOI: 10.1042/bcj20210139] [Citation(s) in RCA: 75] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 06/14/2021] [Accepted: 06/16/2021] [Indexed: 12/14/2022]
Abstract
Cells must adapt to changes in their environment to maintain cell, tissue and organismal integrity in the face of mechanical, chemical or microbiological stress. Nuclear factor-κB (NF-κB) is one of the most important transcription factors that controls inducible gene expression as cells attempt to restore homeostasis. It plays critical roles in the immune system, from acute inflammation to the development of secondary lymphoid organs, and also has roles in cell survival, proliferation and differentiation. Given its role in such critical processes, NF-κB signalling must be subject to strict spatiotemporal control to ensure measured and context-specific cellular responses. Indeed, deregulation of NF-κB signalling can result in debilitating and even lethal inflammation and also underpins some forms of cancer. In this review, we describe the homeostatic feedback mechanisms that limit and ‘re-set’ inducible activation of NF-κB. We first describe the key components of the signalling pathways leading to activation of NF-κB, including the prominent role of protein phosphorylation and protein ubiquitylation, before briefly introducing the key features of feedback control mechanisms. We then describe the array of negative feedback loops targeting different components of the NF-κB signalling cascade including controls at the receptor level, post-receptor signalosome complexes, direct regulation of the critical ‘inhibitor of κB kinases’ (IKKs) and inhibitory feedforward regulation of NF-κB-dependent transcriptional responses. We also review post-transcriptional feedback controls affecting RNA stability and translation. Finally, we describe the deregulation of these feedback controls in human disease and consider how feedback may be a challenge to the efficacy of inhibitors.
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Peña-Asensio J, Sanz-de-Villalobos E, Miquel J, Larrubia JR. Tumor necrosis family receptor superfamily member 9/tumor necrosis factor receptor-associated factor 1 pathway on hepatitis C viral persistence and natural history. World J Hepatol 2020; 12:754-765. [PMID: 33200014 PMCID: PMC7643212 DOI: 10.4254/wjh.v12.i10.754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 08/01/2020] [Accepted: 09/25/2020] [Indexed: 02/06/2023] Open
Abstract
Hepatitis C virus (HCV) infection is an excellent immunological model for understanding the mechanisms developed by non-cytopathic viruses and tumors to evade the adaptative immune response. The antigen-specific cytotoxic T cell response is essential for keeping HCV under control, but during persistent infection, these cells become exhausted or even deleted. The exhaustion process is progressive and depends on the infection duration and level of antigenemia. During high antigenic load and long duration of infection, T cells become extremely exhausted and ultimately disappear due to apoptosis. The development of exhaustion involves the impairment of positive co-stimulation induced by regulatory cytokines, such as transforming growth factor beta 1. This cytokine downregulates tumor necrosis factor receptor (TNFR)-associated factor 1 (TRAF1), the signal transducer of the T cell co-stimulatory molecule TNFR superfamily member 9 (known as 4-1BB). This impairment correlates with the low reactivity of T cells and an exhaustion phenotype. Treatment with interleukin-7 in vitro restores TRAF1 expression and rescues T cell effector function. The process of TRAF1 loss and its in vitro recovery is hierarchical, and more affected by severe disease progression. In conclusion, TRAF1 dynamics on T cells define a new pathogenic model that describes some aspects of the natural history of HCV, and sheds light on novel immunotherapy strategies for chronic viral infections and cancer.
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Affiliation(s)
- Julia Peña-Asensio
- Department of Systems Biology, Guadalajara University Hospital. University of Alcalá, Guadalajara E-19002, Guadalajara, Spain
| | - Eduardo Sanz-de-Villalobos
- Translational Hepatology Unit, Guadalajara University Hospital, University of Alcalá, Guadalajara E-19002, Guadalajara, Spain
| | - Joaquín Miquel
- Translational Hepatology Unit, Guadalajara University Hospital, University of Alcalá, Guadalajara E-19002, Guadalajara, Spain
| | - Juan Ramón Larrubia
- Translational Hepatology Unit, Guadalajara University Hospital, University of Alcalá, Guadalajara E-19002, Guadalajara, Spain
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The NEDD8-activating enzyme inhibition with MLN4924 sensitizes human cancer cells of different origins to apoptosis and necroptosis. Arch Biochem Biophys 2020; 691:108513. [PMID: 32721435 DOI: 10.1016/j.abb.2020.108513] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 07/05/2020] [Accepted: 07/22/2020] [Indexed: 11/23/2022]
Abstract
OBJECTIVES MLN4924 is an inhibitor of NEDD8-activating enzyme (NAE) that interferes with the cullin-RING ubiquitin ligase complexes formation and the nuclear factor kappa B (NF-κB) activation. Here, we investigated the cytotoxic effect of MLN4924 and its ability to sensitize a broad range of cancer cells of different origins to tumour necrosis factor-α (TNF)-induced cell death alongside unravelling its mechanism of action. MATERIALS AND METHODS Cell viability and caspases processing were determined after MLN4924 treatment either alone or with zVAD-fmk (pan caspase inhibitor), necrostatin-1 (nec-1, RIPK1 inhibitor) and necrosulfonamide (NSA, MLKL inhibitor). Moreover, MLN4924 ability to potentiate TNF-induced cell death was evaluated in 24 cell lines of different cancer origins. The impact of NAE inhibition with MLN4924 on TNF-induced apoptosis and necroptosis was evaluated using zVAD-fmk and nec-1, respectively. RESULTS MLN4924 alone was able to induce cell death in different cell lines that was attributed to apoptosis induction. Also, MLN4924 sensitized different cancer cell lines to TNF-induced cell death. MLN4924/TNF-induced cell death was apoptosis and necroptosis dependent that may be attributed to MLN4924 inhibition of NF-κB pathway activation. CONCLUSIONS Targeting NAE and NF-κB pathway with MLN4924 represents a substantial approach to enhance the sensitivity of diverse types of cancer cells. Moreover, the broad in vitro screening of MLN4924 anticancer activity provides a valuable guidance for elucidating the susceptible cancer types for the prospective clinical application of MLN4924.
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Buhrmann C, Shayan P, Banik K, Kunnumakkara AB, Kubatka P, Koklesova L, Shakibaei M. Targeting NF-κB Signaling by Calebin A, a Compound of Turmeric, in Multicellular Tumor Microenvironment: Potential Role of Apoptosis Induction in CRC Cells. Biomedicines 2020; 8:biomedicines8080236. [PMID: 32708030 PMCID: PMC7460490 DOI: 10.3390/biomedicines8080236] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 07/15/2020] [Accepted: 07/20/2020] [Indexed: 12/18/2022] Open
Abstract
Increasing lines of evidence suggest that chronic inflammation mediates most chronic diseases, including cancer. The transcription factor, NF-κB, has been shown to be a major regulator of inflammation and metastasis in tumor cells. Therefore, compounds or any natural agents that can inhibit NF-κB activation have the potential to prevent and treat cancer. However, the mechanism by which Calebin A, a component of turmeric, regulates inflammation and disrupts the interaction between HCT116 colorectal cancer (CRC) cells and multicellular tumor microenvironment (TME) is still poorly understood. The 3D-alginate HCT116 cell cultures in TME were treated with Calebin A, BMS-345541, and dithiothreitol (DTT) and examined for invasiveness, proliferation, and apoptosis. The mechanism of TME-induced malignancy of cancer cells was confirmed by phase contrast, Western blotting, immunofluorescence, and DNA-binding assay. We found through DNA binding assay, that Calebin A inhibited TME-induced NF-κB activation in a dose-dependent manner. As a result of this inhibition, NF-κB phosphorylation and NF-κB nuclear translocation were down-modulated. Calebin A, or IκB-kinase (IKK) inhibitor (BMS-345541) significantly inhibited the direct interaction of nuclear p65 to DNA, and interestingly this interaction was reversed by DTT. Calebin A also suppressed the expression of NF-κB-promoted anti-apoptotic (Bcl-2, Bcl-xL, survivin), proliferation (Cyclin D1), invasion (MMP-9), metastasis (CXCR4), and down-regulated apoptosis (Caspase-3) gene biomarkers, leading to apoptosis in HCT116 cells. These results suggest that Calebin A can suppress multicellular TME-promoted CRC cell invasion and malignancy by inhibiting the NF-κB-promoting inflammatory pathway associated with carcinogenesis, underlining the potential of Calebin A for CRC treatment.
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Affiliation(s)
- Constanze Buhrmann
- Musculoskeletal Research Group and Tumor Biology, Chair of Vegetative Anatomy, Institute of Anatomy, Faculty of Medicine, Ludwig-Maximilian-University Munich, Pettenkoferstrasse 11, D-80336 Munich, Germany;
| | - Parviz Shayan
- Department of Parasitology, Faculty of Veterinary Medicine, University of Tehran, Tehran 141556453, Iran;
| | - Kishore Banik
- Cancer Biology Laboratory & DBT-AIST International Center for Translational and Environmental Research (DAICENTER), Department of Biosciences & Bioengineering, Indian Institute of Technology Guwahati, Assam 781039, India; (K.B.); (A.B.K.)
| | - Ajaikumar B. Kunnumakkara
- Cancer Biology Laboratory & DBT-AIST International Center for Translational and Environmental Research (DAICENTER), Department of Biosciences & Bioengineering, Indian Institute of Technology Guwahati, Assam 781039, India; (K.B.); (A.B.K.)
| | - Peter Kubatka
- Department of Medical Biology, Jessenius Faculty of Medicine, Comenius University in Bratislava, 03601 Martin, Slovakia;
| | - Lenka Koklesova
- Department of Obstetrics and Gynecology, Jessenius Faculty of Medicine, Comenius University in Bratislava, 036 01 Martin, Slovakia;
| | - Mehdi Shakibaei
- Musculoskeletal Research Group and Tumor Biology, Chair of Vegetative Anatomy, Institute of Anatomy, Faculty of Medicine, Ludwig-Maximilian-University Munich, Pettenkoferstrasse 11, D-80336 Munich, Germany;
- Correspondence: ; Tel.: +49-89-2180-72624; Fax: +49-89-2180-72625
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11
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Shrestha A, Bruckmueller H, Kildalsen H, Kaur G, Gaestel M, Wetting HL, Mikkola I, Seternes OM. Phosphorylation of steroid receptor coactivator-3 (SRC-3) at serine 857 is regulated by the p38 MAPK-MK2 axis and affects NF-κB-mediated transcription. Sci Rep 2020; 10:11388. [PMID: 32647362 PMCID: PMC7347898 DOI: 10.1038/s41598-020-68219-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 06/16/2020] [Indexed: 12/13/2022] Open
Abstract
Steroid receptor coactivator-3 (SRC-3) regulates the activity of both nuclear hormone receptors and a number of key transcription factors. It is implicated in the regulation of cell proliferation, inflammation and in the progression of several common cancers including breast, colorectal and lung tumors. Phosphorylation is an important regulatory event controlling the activities of SRC-3. Serine 857 is the most studied phospho-acceptor site, and its modification has been reported to be important for SRC-3-dependent tumor progression. In this study, we show that the stress-responsive p38MAPK-MK2 signaling pathway controls the phosphorylation of SRC-3 at S857 in a wide range of human cancer cells. Activation of the p38MAPK-MK2 pathway results in the nuclear translocation of SRC-3, where it contributes to the transactivation of NF-kB and thus regulation of IL-6 transcription. The identification of the p38MAPK-MK2 signaling axis as a key regulator of SRC-3 phosphorylation and activity opens up new possibilities for the development and testing of novel therapeutic strategies to control both proliferative and metastatic tumor growth.
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Affiliation(s)
- Anup Shrestha
- Department of Pharmacy, UiT The Arctic University of Norway, 9037, Tromsø, Norway
| | - Henrike Bruckmueller
- Department of Pharmacy, UiT The Arctic University of Norway, 9037, Tromsø, Norway
- Institute of Experimental and Clinical Pharmacology, University Hospital Schleswig-Holstein, Campus Kiel, 24105, Kiel, Germany
| | - Hanne Kildalsen
- Department of Pharmacy, UiT The Arctic University of Norway, 9037, Tromsø, Norway
| | - Gurjit Kaur
- Department of Pharmacy, UiT The Arctic University of Norway, 9037, Tromsø, Norway
| | - Matthias Gaestel
- Institute of Cell Biochemistry, Center of Biochemistry, Hannover Medical School, 30625, Hannover, Germany
| | - Hilde Ljones Wetting
- Department of Pharmacy, UiT The Arctic University of Norway, 9037, Tromsø, Norway
| | - Ingvild Mikkola
- Department of Pharmacy, UiT The Arctic University of Norway, 9037, Tromsø, Norway
| | - Ole-Morten Seternes
- Department of Pharmacy, UiT The Arctic University of Norway, 9037, Tromsø, Norway.
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12
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Pflüger-Müller B, Oo JA, Heering J, Warwick T, Proschak E, Günther S, Looso M, Rezende F, Fork C, Geisslinger G, Thomas D, Gurke R, Steinhilber D, Schulz M, Leisegang MS, Brandes RP. The endocannabinoid anandamide has an anti-inflammatory effect on CCL2 expression in vascular smooth muscle cells. Basic Res Cardiol 2020; 115:34. [PMID: 32323032 PMCID: PMC7176595 DOI: 10.1007/s00395-020-0793-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 04/14/2020] [Indexed: 11/29/2022]
Abstract
Endocannabinoids are important lipid-signaling mediators. Both protective and deleterious effects of endocannabinoids in the cardiovascular system have been reported but the mechanistic basis for these contradicting observations is unclear. We set out to identify anti-inflammatory mechanisms of endocannabinoids in the murine aorta and in human vascular smooth muscle cells (hVSMC). In response to combined stimulation with cytokines, IL-1β and TNFα, the murine aorta released several endocannabinoids, with anandamide (AEA) levels being the most significantly increased. AEA pretreatment had profound effects on cytokine-induced gene expression in hVSMC and murine aorta. As revealed by RNA-Seq analysis, the induction of a subset of 21 inflammatory target genes, including the important cytokine CCL2 was blocked by AEA. This effect was not mediated through AEA-dependent interference of the AP-1 or NF-κB pathways but rather through an epigenetic mechanism. In the presence of AEA, ATAC-Seq analysis and chromatin-immunoprecipitations revealed that CCL2 induction was blocked due to increased levels of H3K27me3 and a decrease of H3K27ac leading to compacted chromatin structure in the CCL2 promoter. These effects were mediated by recruitment of HDAC4 and the nuclear corepressor NCoR1 to the CCL2 promoter. This study therefore establishes a novel anti-inflammatory mechanism for the endogenous endocannabinoid AEA in vascular smooth muscle cells. Furthermore, this work provides a link between endogenous endocannabinoid signaling and epigenetic regulation.
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Affiliation(s)
- Beatrice Pflüger-Müller
- Fachbereich Medizin, Institute for Cardiovascular Physiology, Goethe University, Theodor-Stern-Kai 7, 60590, Frankfurt, Germany.,German Center for Cardiovascular Research (DZHK), Partner site Rhein Main, Frankfurt, Germany
| | - James A Oo
- Fachbereich Medizin, Institute for Cardiovascular Physiology, Goethe University, Theodor-Stern-Kai 7, 60590, Frankfurt, Germany.,German Center for Cardiovascular Research (DZHK), Partner site Rhein Main, Frankfurt, Germany
| | - Jan Heering
- Branch for Translational Medicine and Pharmacology TMP, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, 60438, Frankfurt, Germany
| | - Timothy Warwick
- Fachbereich Medizin, Institute for Cardiovascular Physiology, Goethe University, Theodor-Stern-Kai 7, 60590, Frankfurt, Germany.,German Center for Cardiovascular Research (DZHK), Partner site Rhein Main, Frankfurt, Germany
| | - Ewgenij Proschak
- Institute of Pharmaceutical Chemistry, Goethe-University, 60438, Frankfurt, Germany
| | - Stefan Günther
- Max-Planck-Institute for Heart- and Lung Research (MPI-HLR), 61231, Bad Nauheim, Germany
| | - Mario Looso
- Max-Planck-Institute for Heart- and Lung Research (MPI-HLR), 61231, Bad Nauheim, Germany
| | - Flávia Rezende
- Fachbereich Medizin, Institute for Cardiovascular Physiology, Goethe University, Theodor-Stern-Kai 7, 60590, Frankfurt, Germany.,German Center for Cardiovascular Research (DZHK), Partner site Rhein Main, Frankfurt, Germany
| | - Christian Fork
- Fachbereich Medizin, Institute for Cardiovascular Physiology, Goethe University, Theodor-Stern-Kai 7, 60590, Frankfurt, Germany.,German Center for Cardiovascular Research (DZHK), Partner site Rhein Main, Frankfurt, Germany
| | - Gerd Geisslinger
- Branch for Translational Medicine and Pharmacology TMP, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, 60438, Frankfurt, Germany.,Faculty of Medicine, Pharmazentrum Frankfurt/ZAFES, Institute of Clinical Pharmacology, Goethe-University, 60590, Frankfurt, Germany
| | - Dominique Thomas
- Faculty of Medicine, Pharmazentrum Frankfurt/ZAFES, Institute of Clinical Pharmacology, Goethe-University, 60590, Frankfurt, Germany
| | - Robert Gurke
- Branch for Translational Medicine and Pharmacology TMP, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, 60438, Frankfurt, Germany.,Faculty of Medicine, Pharmazentrum Frankfurt/ZAFES, Institute of Clinical Pharmacology, Goethe-University, 60590, Frankfurt, Germany
| | - Dieter Steinhilber
- Branch for Translational Medicine and Pharmacology TMP, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, 60438, Frankfurt, Germany.,Institute of Pharmaceutical Chemistry, Goethe-University, 60438, Frankfurt, Germany
| | - Marcel Schulz
- Vascular Research Centre, Goethe-University, 60596, Frankfurt, Germany
| | - Matthias S Leisegang
- Fachbereich Medizin, Institute for Cardiovascular Physiology, Goethe University, Theodor-Stern-Kai 7, 60590, Frankfurt, Germany.,German Center for Cardiovascular Research (DZHK), Partner site Rhein Main, Frankfurt, Germany
| | - Ralf P Brandes
- Fachbereich Medizin, Institute for Cardiovascular Physiology, Goethe University, Theodor-Stern-Kai 7, 60590, Frankfurt, Germany. .,German Center for Cardiovascular Research (DZHK), Partner site Rhein Main, Frankfurt, Germany.
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13
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Yadav D, Nath Mishra B, Khan F. 3D-QSAR and docking studies on ursolic acid derivatives for anticancer activity based on bladder cell line T24 targeting NF-kB pathway inhibition. J Biomol Struct Dyn 2019; 37:3822-3837. [PMID: 30261824 DOI: 10.1080/07391102.2018.1528888] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 09/20/2018] [Accepted: 09/20/2018] [Indexed: 01/08/2023]
Abstract
Bladder cancer is the common reason for mortality worldwide, and its increasing rate announces as a significant area of research in drug designing. The side effects and toxicity of existing drugs and the consequence of gradual cancer cell resistance against the available therapy make the treatment poor. Globally, there is a continuous high demand to develop new, more potent, and easily affordable drugs against cancer. The current research article illustrates the application of developed three-dimensional quantitative structure-activity relationship (3D-QSAR) based on human bladder cancer cell line T24 in vitro anticancer activity. The derived QSAR model has been used for prediction of natural compounds and analogs with 80% similarity of the most active compound of the dataset. The developed model describes the structure-activity relationship for terpenes and their derivatives at the molecular level. The developed comparative molecular field analysis (CoMFA) model shows a satisfactory cross-validation correlation coefficient (q2) of 0.54 and a regression correlation coefficient (r2) of 0.86. In order to evaluate the compliance with electronic pharmacokinetic parameters, Lipinski's rule of five filter, absorption, distribution, metabolism, and excretion (ADME) and toxicity of predicted compounds have been calculated. Furthermore, molecular-docking study has been performed to prioritize these predicted compounds based on their docking score and binding pocket similarity through the identified potential anticancer targets. Finally, two compounds T9 and B42 have been identified as the best hit because these two fall within the standard limits of all filters and show a good binding affinity. Conclusively, all satisfactory results strongly suggest that the derived 3D-QSAR model and obtained candidate's binding structures are reasonable in the prediction of a new antagonist's activity. The strategy adopted in the present research is expected to be of immense importance and a great support in the identification and optimization of lead in the early and advance drug discovery.
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Affiliation(s)
- Deepika Yadav
- a Department of Metabolic and Structural Biology , CSIR - Central Institute of Medicinal and Aromatic Plants , Lucknow , Uttar Pradesh , India
- b Department of Biotechnology , Institute of Engineering and Technology (Dr. A.P.J. Abdul Kalam Technical University) , Lucknow , Uttar Pradesh , India
| | - Bhartendu Nath Mishra
- b Department of Biotechnology , Institute of Engineering and Technology (Dr. A.P.J. Abdul Kalam Technical University) , Lucknow , Uttar Pradesh , India
| | - Feroz Khan
- a Department of Metabolic and Structural Biology , CSIR - Central Institute of Medicinal and Aromatic Plants , Lucknow , Uttar Pradesh , India
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14
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The NEDD8-activating enzyme inhibitor MLN4924 sensitizes a TNFR1 + subgroup of multiple myeloma cells for TNF-induced cell death. Cell Death Dis 2019; 10:611. [PMID: 31406107 PMCID: PMC6690881 DOI: 10.1038/s41419-019-1860-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 07/30/2019] [Accepted: 07/31/2019] [Indexed: 01/10/2023]
Abstract
The NEDD8-activating enzyme (NAE) inhibitor MLN4924 inhibits cullin-RING ubiquitin ligase complexes including the SKP1-cullin-F-box E3 ligase βTrCP. MLN4924 therefore inhibits also the βTrCP-dependent activation of the classical and the alternative NFĸB pathway. In this work, we found that a subgroup of multiple myeloma cell lines (e.g., RPMI-8226, MM.1S, KMS-12BM) and about half of the primary myeloma samples tested are sensitized to TNF-induced cell death by MLN4924. This correlated with MLN4924-mediated inhibition of TNF-induced activation of the classical NFκB pathway and reduced the efficacy of TNF-induced TNFR1 signaling complex formation. Interestingly, binding studies revealed a straightforward correlation between cell surface TNFR1 expression in multiple myeloma cell lines and their sensitivity for MLN4924/TNF-induced cell death. The cell surface expression levels of TNFR1 in the investigated MM cell lines largely correlated with TNFR1 mRNA expression. This suggests that the variable levels of cell surface expression of TNFR1 in myeloma cell lines are decisive for TNF/MLN4924 sensitivity. Indeed, introduction of TNFR1 into TNFR1-negative TNF/MLN4924-resistant KMS-11BM cells, was sufficient to sensitize this cell line for TNF/MLN4924-induced cell death. Thus, MLN4924 might be especially effective in myeloma patients with TNFR1+ myeloma cells and a TNFhigh tumor microenvironment.
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15
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Konstorum A, Vella AT, Adler AJ, Laubenbacher RC. A mathematical model of combined CD8 T cell costimulation by 4-1BB (CD137) and OX40 (CD134) receptors. Sci Rep 2019; 9:10862. [PMID: 31350431 PMCID: PMC6659676 DOI: 10.1038/s41598-019-47333-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 07/11/2019] [Indexed: 02/07/2023] Open
Abstract
Combined agonist stimulation of the TNFR costimulatory receptors 4-1BB (CD137) and OX40(CD134) has been shown to generate supereffector CD8 T cells that clonally expand to greater levels, survive longer, and produce a greater quantity of cytokines compared to T cells stimulated with an agonist of either costimulatory receptor individually. In order to understand the mechanisms for this effect, we have created a mathematical model for the activation of the CD8 T cell intracellular signaling network by mono- or dual-costimulation. We show that supereffector status is generated via downstream interacting pathways that are activated upon engagement of both receptors, and in silico simulations of the model are supported by published experimental results. The model can thus be used to identify critical molecular targets of T cell dual-costimulation in the context of cancer immunotherapy.
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Affiliation(s)
- Anna Konstorum
- Center for Quantitative Medicine, School of Medicine, UConn Health, 263 Farmington Ave., Farmington, CT, USA.
| | - Anthony T Vella
- Department of Immunology, School of Medicine, UConn Health, 263 Farmington Ave., Farmington, CT, USA
| | - Adam J Adler
- Department of Immunology, School of Medicine, UConn Health, 263 Farmington Ave., Farmington, CT, USA
| | - Reinhard C Laubenbacher
- Center for Quantitative Medicine, School of Medicine, UConn Health, 263 Farmington Ave., Farmington, CT, USA.,Jackson Laboratory for Genomic Medicine, 263 Farmington Ave., Farmington, CT, USA
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16
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Mussbacher M, Salzmann M, Brostjan C, Hoesel B, Schoergenhofer C, Datler H, Hohensinner P, Basílio J, Petzelbauer P, Assinger A, Schmid JA. Cell Type-Specific Roles of NF-κB Linking Inflammation and Thrombosis. Front Immunol 2019; 10:85. [PMID: 30778349 PMCID: PMC6369217 DOI: 10.3389/fimmu.2019.00085] [Citation(s) in RCA: 368] [Impact Index Per Article: 73.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 01/11/2019] [Indexed: 12/22/2022] Open
Abstract
The transcription factor NF-κB is a central mediator of inflammation with multiple links to thrombotic processes. In this review, we focus on the role of NF-κB signaling in cell types within the vasculature and the circulation that are involved in thrombo-inflammatory processes. All these cells express NF-κB, which mediates important functions in cellular interactions, cell survival and differentiation, as well as expression of cytokines, chemokines, and coagulation factors. Even platelets, as anucleated cells, contain NF-κB family members and their corresponding signaling molecules, which are involved in platelet activation, as well as secondary feedback circuits. The response of endothelial cells to inflammation and NF-κB activation is characterized by the induction of adhesion molecules promoting binding and transmigration of leukocytes, while simultaneously increasing their thrombogenic potential. Paracrine signaling from endothelial cells activates NF-κB in vascular smooth muscle cells and causes a phenotypic switch to a “synthetic” state associated with a decrease in contractile proteins. Monocytes react to inflammatory situations with enforced expression of tissue factor and after differentiation to macrophages with altered polarization. Neutrophils respond with an extension of their life span—and upon full activation they can expel their DNA thereby forming so-called neutrophil extracellular traps (NETs), which exert antibacterial functions, but also induce a strong coagulatory response. This may cause formation of microthrombi that are important for the immobilization of pathogens, a process designated as immunothrombosis. However, deregulation of the complex cellular links between inflammation and thrombosis by unrestrained NET formation or the loss of the endothelial layer due to mechanical rupture or erosion can result in rapid activation and aggregation of platelets and the manifestation of thrombo-inflammatory diseases. Sepsis is an important example of such a disorder caused by a dysregulated host response to infection finally leading to severe coagulopathies. NF-κB is critically involved in these pathophysiological processes as it induces both inflammatory and thrombotic responses.
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Affiliation(s)
- Marion Mussbacher
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
| | - Manuel Salzmann
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
| | - Christine Brostjan
- Department of Surgery, General Hospital, Medical University of Vienna, Vienna, Austria
| | - Bastian Hoesel
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
| | | | - Hannes Datler
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
| | - Philipp Hohensinner
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
| | - José Basílio
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
| | - Peter Petzelbauer
- Skin and Endothelial Research Division, Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Alice Assinger
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
| | - Johannes A Schmid
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
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17
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Zapata JM, Perez-Chacon G, Carr-Baena P, Martinez-Forero I, Azpilikueta A, Otano I, Melero I. CD137 (4-1BB) Signalosome: Complexity Is a Matter of TRAFs. Front Immunol 2018; 9:2618. [PMID: 30524423 PMCID: PMC6262405 DOI: 10.3389/fimmu.2018.02618] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 10/24/2018] [Indexed: 12/11/2022] Open
Abstract
CD137 (4-1BB, Tnsfr9) is a member of the TNF-receptor (TNFR) superfamily without known intrinsic enzymatic activity in its cytoplasmic domain. Hence, akin to other members of the TNFR family, it relies on the TNFR-Associated-Factor (TRAF) family of adaptor proteins to build the CD137 signalosome for transducing signals into the cell. Thus, upon CD137 activation by binding of CD137L trimers or by crosslinking with agonist monoclonal antibodies, TRAF1, TRAF2, and TRAF3 are readily recruited to the cytoplasmic domain of CD137, likely as homo- and/or heterotrimers with different configurations, initiating the construction of the CD137 signalosome. The formation of TRAF2-RING dimers between TRAF2 molecules from contiguous trimers would help to establish a multimeric structure of TRAF-trimers that is probably essential for CD137 signaling. In addition, available studies have identified a large number of proteins that are recruited to CD137:TRAF complexes including ubiquitin ligases and proteases, kinases, and modulatory proteins. Working in a coordinated fashion, these CD137-signalosomes will ultimately promote CD137-mediated T cell proliferation and survival and will endow T cells with stronger effector functions. Current evidence allows to envision the molecular events that might take place in the early stages of CD137-signalosome formation, underscoring the key roles of TRAFs and of K63 and K48-ubiquitination of target proteins in the signaling process. Understanding the composition and fine regulation of CD137-signalosomes assembly and disassembly will be key to improve the therapeutic activities of chimeric antigen receptors (CARs) encompassing the CD137 cytoplasmic domain and a new generation of CD137 agonists for the treatment of cancer.
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Affiliation(s)
- Juan M Zapata
- Instituto de Investigaciones Biomédicas "Alberto Sols" (CSIC-UAM), Madrid, Spain.,Instituto de Investigación Hospital Universitario La Paz, Madrid, Spain
| | - Gema Perez-Chacon
- Instituto de Investigaciones Biomédicas "Alberto Sols" (CSIC-UAM), Madrid, Spain.,Instituto de Investigación Hospital Universitario La Paz, Madrid, Spain
| | - Pablo Carr-Baena
- Instituto de Investigaciones Biomédicas "Alberto Sols" (CSIC-UAM), Madrid, Spain
| | - Ivan Martinez-Forero
- Departamento de Inmunologia and Inmunoterapia, Centro de Investigación Medica Aplicada, Universidad de Navarra, Pamplona, Spain
| | - Arantza Azpilikueta
- Departamento de Inmunologia and Inmunoterapia, Centro de Investigación Medica Aplicada, Universidad de Navarra, Pamplona, Spain
| | - Itziar Otano
- Departamento de Inmunologia and Inmunoterapia, Centro de Investigación Medica Aplicada, Universidad de Navarra, Pamplona, Spain
| | - Ignacio Melero
- Departamento de Inmunologia and Inmunoterapia, Centro de Investigación Medica Aplicada, Universidad de Navarra, Pamplona, Spain.,MSD, London, United Kingdom.,Departamento de Inmunologia e Inmunoterapia, Clinica Universitaria, Universidad de Navarra, Pamplona, Spain.,Instituto de Investigacion Sanitaria de Navarra, Pamplona, Spain.,Centro de Investigación Biomédica en Red Cáncer (CIBERONC), Madrid, Spain
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18
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Humphries JE, Deneckere LE. Characterization of a Toll-like receptor (TLR) signaling pathway in Biomphalaria glabrata and its potential regulation by NF-kappaB. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 86:118-129. [PMID: 29746981 DOI: 10.1016/j.dci.2018.05.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 04/26/2018] [Accepted: 05/03/2018] [Indexed: 05/16/2023]
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19
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Zhang H, Li H, Shaikh A, Caudle Y, Yao B, Yin D. Inhibition of MicroRNA-23b Attenuates Immunosuppression During Late Sepsis Through NIK, TRAF1, and XIAP. J Infect Dis 2018; 218:300-311. [PMID: 29506272 PMCID: PMC6009583 DOI: 10.1093/infdis/jiy116] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 02/27/2018] [Indexed: 12/12/2022] Open
Abstract
Background microRNA-23b (miR-23b) is a multiple functional miRNA. We hypothesize that miR-23b plays a role in the pathogenesis of sepsis. Our study investigated the effect of miR-23b on sepsis-induced immunosuppression. Methods Mice were treated with miR-23b inhibitors by tail vein injection 2 days after cecal ligation puncture (CLP)-induced sepsis. Apoptosis in spleens and apoptotic signals were investigated, and survival was monitored. T-cell immunoreactivities were examined during late sepsis. Nuclear factor κB (NF-κB)-inducing kinase (NIK), tumor necrosis factor (TNF)-receptor associated factor 1 (TRAF1), and X-linked inhibitor of apoptosis protein (XIAP), the putative targets of miR-23b, were identified by a dual-luciferase reporter assay. Results miR-23b expression is upregulated and sustained during sepsis. The activation of the TLR4/TLR9/p38 MAPK/STAT3 signal pathway contributes to the production of miR-23b in CLP-induced sepsis. miR-23b inhibitor decreased the number of spleen cells positive by terminal deoxynucleotidyl transferase dUTP nick-end labeling and improved survival. miR-23b inhibitor restored the immunoreactivity by alleviating the development of T-cell exhaustion and producing smaller amounts of immunosuppressive interleukin 10 and interleukin 4 during late sepsis. We demonstrated that miR-23b mediated immunosuppression during late sepsis by inhibiting the noncanonical NF-κB signal and promoting the proapoptotic signal pathway by targeting NIK, TRAF1, and XIAP. Conclusions Inhibition of miR-23b reduces late-sepsis-induced immunosuppression and improves survival. miR-23b might be a target for immunosuppression.
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Affiliation(s)
- Haiju Zhang
- Department of Internal Medicine, College of Medicine, East Tennessee State University, Johnson City
- Department of Pediatrics, Renmin Hospital of Wuhan University, China
| | - Hui Li
- Department of Internal Medicine, College of Medicine, East Tennessee State University, Johnson City
| | - Aamir Shaikh
- Department of Internal Medicine, College of Medicine, East Tennessee State University, Johnson City
| | - Yi Caudle
- Department of Internal Medicine, College of Medicine, East Tennessee State University, Johnson City
| | - Baozhen Yao
- Department of Pediatrics, Renmin Hospital of Wuhan University, China
| | - Deling Yin
- Department of Internal Medicine, College of Medicine, East Tennessee State University, Johnson City
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20
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Wen X, Wang B, Feng T, Yuan W, Zhou J, Fang T. TNF receptor-associated factor 1 as a biomarker for assessment of non-small cell lung cancer metastasis and overall survival. CLINICAL RESPIRATORY JOURNAL 2018. [PMID: 29528567 DOI: 10.1111/crj.12789] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND AIM Non-small cell lung cancer (NSCLC), which comprises 80%-85% of all lung cancer cases, is one of the most common human malignancies. Despite great improvements in diagnostic technology and the introduction of new therapeutic agents in recent years, the 5-year survival rate of NSCLC is still low. Tumor necrosis factor (TNF) receptor-associated factor 1 (TRAF1) plays an important role in the TNF-related apoptosis-inducing ligand (TRAIL) associated signal pathway. METHODS In this study, we aim to illuminate the function of TRAF1 in NSCLC. Toward that end, TRAF1 expression was detected using immunohistochemistry (IHC) in specimens from 200 NSCLC patients. The function of TRAF1 in the A549 and H1299 cell lines was evaluated by colony formation and MTT assays. RESULTS Our data showed that TRAF1 was significantly upregulated in NSCLC tissues. TRAF1 expression was positively associated with NSCLC lymphatic metastasis and clinical stage and was negatively associated with overall patient survival. TRAF1 promoted NSCLC cell proliferation CONCLUSION: TRAF1 expression was positively associated with NSCLC lymphatic metastasis and histological grade and was negatively associated with overall patient survival. TRAF1 may be an important therapeutic target for NSCLC.
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Affiliation(s)
- Xiaoxing Wen
- Department of Pulmonary Medicine, Shengli Oilfield Central Hospital, Dongying, Shandong Province, China
| | - Bingping Wang
- Department of Oncology, Shengli Oilfield Central Hospital, Dongying, Shandong Province, China
| | - Tao Feng
- Department of Pulmonary Medicine, Shengli Oilfield Central Hospital, Dongying, Shandong Province, China
| | - Wei Yuan
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jian Zhou
- Department of Pulmonary Medicine, Research Institute of Respiratory Disease, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Tao Fang
- Department of Oncology, Shengli Oilfield Central Hospital, Dongying, Shandong Province, China
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21
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According to Hepatitis C Virus (HCV) Infection Stage, Interleukin-7 Plus 4-1BB Triggering Alone or Combined with PD-1 Blockade Increases TRAF1 low HCV-Specific CD8 + Cell Reactivity. J Virol 2018; 92:JVI.01443-17. [PMID: 29093082 DOI: 10.1128/jvi.01443-17] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Accepted: 10/23/2017] [Indexed: 12/14/2022] Open
Abstract
Hepatitis C virus (HCV)-specific CD8+ T cells suffer a progressive exhaustion during persistent infection (PI) with HCV. This process could involve the positive immune checkpoint 4-1BB/4-1BBL through the loss of its signal transducer, TRAF1. To address this issue, peripheral HCV-specific CD8+ T cells (pentamer-positive [pentamer+]/CD8+ T cells) from patients with PI and resolved infection (RI) after treatment were studied. The duration of HCV infection and the liver fibrosis progression rate inversely correlated with the likelihood of detection of peripheral pentamer+/CD8+ cells. In PI, pentamer+/CD8+ cells had impaired antigen-specific reactivity that worsened when these cells were not detectable ex vivo Short/midduration PI was characterized by detectable peripheral PD-1+ CD127low TRAF1low cells. After triggering of T cell receptors (TCR), the TRAF1 level positively correlated with the levels of CD127, Mcl-1, and CD107a expression and proliferation intensity but negatively with PD-1 expression, linking TRAF1low to exhaustion. In vitro treatment with interleukin-7 (IL-7) upregulated TRAF1 expression, while treatment with transforming growth factor-β1 (TGF-β1) did the opposite, suggesting that the IL-7/TGF-β1 balance, besides TCR stimulation, could be involved in TRAF1 regulation. In fact, the serum TGF-β1 concentration was higher in patients with PI than in patients with RI, and it negatively correlated with TRAF1 expression. In line with IL-7 increasing the level of TRAF1 expression, IL-7 plus 4-1BBL treatment in vitro enhanced T cell reactivity in patients with short/midduration infection. However, in patients with long-lasting PI, anti-PD-L1, in addition to the combination of IL-7 and 4-1BBL, was necessary to reestablish T cell proliferation in individuals with slowly progressing liver fibrosis (slow fibrosers) but had no effect in rapid fibrosers. In conclusion, a peripheral hyporeactive TRAF1low HCV-specific CD8+ T cell response, restorable by IL-7 plus 4-1BBL treatment, characterizes short/midduration PI. In long-lasting disease, HCV-specific CD8+ T cells are rarely detectable ex vivo, but treatment with IL-7, 4-1BBL, and anti-PD-L1 recovers their reactivity in vitro in slow fibrosers.IMPORTANCE Hepatitis C virus (HCV) infects 71 million people worldwide. Two-thirds develop a chronic disease that can lead to cirrhosis and hepatocellular carcinoma. Direct-acting antivirals clear the infection, but there are still patients who relapse. In these cases, additional immunotherapy could play a vital role. A successful anti-HCV immune response depends on virus-specific CD8+ T cells. During chronic infection, these cells are functionally impaired, which could be due to the failure of costimulation. This study describes exhausted specific T cells, characterized by low levels of expression of the signal transducer TRAF1 of the positive costimulatory pathway 4-1BB/4-1BBL. IL-7 upregulated TRAF1 expression and improved T cell reactivity in patients with short/midduration disease, while in patients with long-lasting infection, it was also necessary to block the negative PD-1/PD-L1 checkpoint. When the results are taken together, this work supports novel ways of restoring the specific CD8+ T cell response, shedding light on the importance of TRAF1 signaling. This could be a promising target for future immunotherapy.
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22
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Lalani AI, Zhu S, Gokhale S, Jin J, Xie P. TRAF molecules in inflammation and inflammatory diseases. ACTA ACUST UNITED AC 2017. [PMID: 29527458 DOI: 10.1007/s40495-017-0117-y] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Purpose of Review This review presents an overview of the current knowledge of TRAF molecules in inflammation with an emphasis on available human evidence and direct in vivo evidence of mouse models that demonstrate the contribution of TRAF molecules in the pathogenesis of inflammatory diseases. Recent Findings The tumor necrosis factor receptor (TNF-R)-associated factor (TRAF) family of cytoplasmic proteins was initially identified as signaling adaptors that bind directly to the intracellular domains of receptors of the TNF-R superfamily. It is now appreciated that TRAF molecules are widely employed in signaling by a variety of adaptive and innate immune receptors as well as cytokine receptors. TRAF-dependent signaling pathways typically lead to the activation of nuclear factor-κBs (NF-κBs), mitogen-activated protein kinases (MAPKs), or interferon-regulatory factors (IRFs). Most of these signaling pathways have been linked to inflammation, and therefore TRAF molecules were expected to regulate inflammation and inflammatory responses since their discovery in 1990s. However, direct in vivo evidence of TRAFs in inflammation and especially in inflammatory diseases had been lacking for many years, partly due to the difficulty imposed by early lethality of TRAF2-/-, TRAF3-/-, and TRAF6-/- mice. With the creation of conditional knockout and lineage-specific transgenic mice of different TRAF molecules, our understanding about TRAFs in inflammation and inflammatory responses has rapidly advanced during the past decade. Summary Increasing evidence indicates that TRAF molecules are versatile and indispensable regulators of inflammation and inflammatory responses and that aberrant expression or function of TRAFs contributes to the pathogenesis of inflammatory diseases.
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Affiliation(s)
- Almin I Lalani
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, New Jersey 08854
- Graduate Program in Cellular and Molecular Pharmacology, Rutgers University, Piscataway, New Jersey 08854
| | - Sining Zhu
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, New Jersey 08854
- Graduate Program in Cellular and Molecular Pharmacology, Rutgers University, Piscataway, New Jersey 08854
| | - Samantha Gokhale
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, New Jersey 08854
- Graduate Program in Cellular and Molecular Pharmacology, Rutgers University, Piscataway, New Jersey 08854
| | - Juan Jin
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, New Jersey 08854
- Department of Pharmacology, Anhui Medical University, Meishan Road 81st, Shushan District, Hefei, Anhui province, China
| | - Ping Xie
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, New Jersey 08854
- Member, Rutgers Cancer Institute of New Jersey
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Seigner J, Basilio J, Resch U, de Martin R. CD40L and TNF both activate the classical NF-κB pathway, which is not required for the CD40L induced alternative pathway in endothelial cells. Biochem Biophys Res Commun 2017; 495:1389-1394. [PMID: 29183724 DOI: 10.1016/j.bbrc.2017.11.160] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 11/24/2017] [Indexed: 11/16/2022]
Abstract
CD40L and TNF signal through engagement of their respective receptors, which are both members of the TNF receptor family. They use partially common signaling molecules leading, among others, to activation of the NF-κB pathway. However, whereas TNF activates the classical, CD40L has been reported to activate the alternative NF-κB pathway, leading to the anticipation that differences in the pattern of inflammatory gene expression would occur. Here, we have compared the gene expression repertoire of CD40L (CD154) and TNF stimulated HUVEC and report that unexpectedly, apart from a stronger response to TNF, no major qualitative differences could be observed. This applies for the period of up to 6 h, a time where the alternative pathway has already been activated. Analysis of the early events after receptor engagement revealed that both TNF and CD40L activate the classical NF-κB pathway, and confirm activation of the alternative by the latter. Furthermore, using genetic and pharmacological inhibition of the classical pathway we show that activation of the alternative occurs independently of the former. This reveals novel insights into NF-κB signaling by CD40L and TNF in endothelial cells.
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Affiliation(s)
- J Seigner
- Department of Vascular Biology and Thrombosis Research, Medical University of Vienna, A-1090 Vienna, Austria
| | - J Basilio
- Department of Vascular Biology and Thrombosis Research, Medical University of Vienna, A-1090 Vienna, Austria
| | - U Resch
- Department of Vascular Biology and Thrombosis Research, Medical University of Vienna, A-1090 Vienna, Austria
| | - R de Martin
- Department of Vascular Biology and Thrombosis Research, Medical University of Vienna, A-1090 Vienna, Austria.
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24
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Zhao L, Wang Q, Zhang C, Huang C. Genome-wide DNA methylation analysis of articular chondrocytes identifies TRAF1, CTGF, and CX3CL1 genes as hypomethylated in osteoarthritis. Clin Rheumatol 2017; 36:2335-2342. [PMID: 28470428 DOI: 10.1007/s10067-017-3667-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 04/08/2017] [Accepted: 04/25/2017] [Indexed: 01/05/2023]
Abstract
The aim of this study is to identify osteoarthritis (OA)-associated differentially methylated genes in human articular chondrocytes from patients with OA. DNA methylation profiling of articular chondrocytes from OA patients, rheumatoid arthritis (RA) patients, and controls was performed, and candidate genes were chosen for validation of gene demethylation status. The mRNA expression levels of candidate genes in chondrocytes were detected by real-time quantitative PCR. Chondrocytes from OA and RA group were treated with 5-Aza-2-deoxycytidine (5-Aza), and then the mRNA expression levels were detected. Forty-five genes with significant methylation differences between OA and control group were identified. Tumor necrosis factor receptor-associated factor 1 (TRAF1), connective tissue growth factor (CTGF), and chemokine (C-X3-C motif) ligand 1(CX3CL1) genes were hypomethylated in chondrocytes of OA and RA patients, which verified by bisulfite sequencing analysis. The mRNA expression level of TRAF1 and CTGF was significantly increased in OA and RA group (p < 0.05), while the expression level of CX3CL1 was only increased in OA group (p < 0.05). For the chondrocytes from OA and RA treated with 5-Aza, the mRNA expression level of TRAF1 and CTGF was highly increased (p < 0.05). It is the first time to show that TRAF1, CTGF, and CX3CL1 genes were hypomethylated in OA chondrocytes and have a consistent correlation with mRNA expression, which suggests that epigenetic changes in the methylation status of TRAF1, CTGF, and CX3CL1 contribute to the pathology of OA.
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Affiliation(s)
- Like Zhao
- Department of Rheumatology, Beijing Hospital, National Center of Gerontology, No. 1 Da Hua Road, Dong Dan, Beijing, 100730, People's Republic of China.
| | - Qian Wang
- Department of Rheumatology, Beijing Hospital, National Center of Gerontology, No. 1 Da Hua Road, Dong Dan, Beijing, 100730, People's Republic of China
| | - Chunmei Zhang
- Department of Rheumatology, Beijing Hospital, National Center of Gerontology, No. 1 Da Hua Road, Dong Dan, Beijing, 100730, People's Republic of China
| | - Cibo Huang
- Department of Rheumatology, Beijing Hospital, National Center of Gerontology, No. 1 Da Hua Road, Dong Dan, Beijing, 100730, People's Republic of China
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Tumour necrosis factor receptor-associated factor-1 (TRAF-1) expression is increased in renal cell carcinoma patient serum but decreased in cancer tissue compared with normal: potential biomarker significance. Pathology 2016; 46:518-22. [PMID: 25158810 DOI: 10.1097/pat.0000000000000145] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Renal cell carcinoma (RCC) generally has a poor prognosis because of late diagnosis and metastasis. We have previously described decreased tumour necrosis factor receptor-associated factor-1 (TRAF-1) in RCC compared with paired normal kidney in a patient cohort in Australia. In the present study, TRAF-1 expression in clear cell RCC (ccRCC) and normal kidney was again compared, but in a cohort from University Malaya Medical Centre. Serum TRAF-1 was also evaluated in RCC and normal samples.Immunohistochemistry with automated batch staining and Aperio ImageScope morphometry was used to compare TRAF-1 in 61 ccRCC with paired normal kidney tissue. Serum from 15 newly diagnosed and untreated ccRCC and 15 healthy people was tested for TRAF-1 using ELISA.In this cohort, TRAF-1 was highly expressed in proximal tubular epithelium of normal kidney, and significantly decreased in ccRCC tissue (p < 0.001). Conversely, TRAF-1 in serum from ccRCC patients was significantly increased over control serum (132 ± 30 versus 54 ± 14 pg/mL, respectively; p = 0.013).Decreased TRAF-1 in RCC tissue, reported previously, was confirmed. This, along with significantly increased serum TRAF-1 may indicate the protein is actively secreted during development and progression of ccRCC. Therefore, the increased serum TRAF-1 may be a useful non-invasive indicator of RCC development.
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26
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Wan XK, Yuan SL, Tao HX, Diao LP, Wang YC, Cao C, Liu CJ. The Upregulation of TRAF1 Induced by Helicobacter pylori Plays an Antiapoptotic Effect on the Infected Cells. Helicobacter 2016; 21:554-564. [PMID: 27060717 DOI: 10.1111/hel.12311] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Tumor necrosis factor receptor-associated factor 1 (TRAF1) is a member of the TRAF family and is dysregulated in diseases, such as atheroma, lymphoma, and solid tumors, but the role of TRAF1 in gastric cancer remains unknown. This study was aimed to investigate the role of TRAF1 in Helicobacter pylori (H. pylori)-related cell apoptosis and gastric carcinogenesis. MATERIALS AND METHODS The mRNA and protein expression levels of TRAF1 were measured in a panel of gastric cancer cell lines and in H. pylori -infected mice by quantitative real-time PCR (qPCR) and Western blotting. The transcription factor that mainly affects transcription of TRAF1 during H. pylori infection was identified. The roles of H. pylori virulence factors that regulate TRAF1 expression were analyzed using isogenic cagA-, vacA-, and cagE-null mutants. The effects of TRAF1 on gastric cell viability and apoptosis during H. pylori infection were detected using the standard MTS (cell viability) assay and flow cytometry, respectively. RESULTS H. pylori infection induced TRAF1 overexpression in both gastric epithelial cells and mice. The expression of TRAF1 in response to H. pylori infection was majorly regulated by the activation of NF-κB and was strongly related to H. pylori virulence factor CagA. The upregulation of TRAF1 inhibited cell apoptosis and increased the viability of infected cells. CONCLUSIONS H. pylori infection induces the overexpression of TRAF1 in gastric epithelial cells. The upregulation of TRAF1 plays an antiapoptotic role in H. pylori -infected gastric cells and may contribute to the gastric carcinogenesis.
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Affiliation(s)
- Xiu-Kun Wan
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Biotechnology, Beijing, China
| | - Sheng-Ling Yuan
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Biotechnology, Beijing, China
| | - Hao-Xia Tao
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Biotechnology, Beijing, China
| | - Li-Peng Diao
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Biotechnology, Beijing, China
| | - Yan-Chun Wang
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Biotechnology, Beijing, China
| | - Cheng Cao
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Biotechnology, Beijing, China
| | - Chun-Jie Liu
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Biotechnology, Beijing, China
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27
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Global gene regulation during activation of immunoglobulin class switching in human B cells. Sci Rep 2016; 6:37988. [PMID: 27897229 PMCID: PMC5126563 DOI: 10.1038/srep37988] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 11/03/2016] [Indexed: 02/06/2023] Open
Abstract
Immunoglobulin class switch recombination (CSR) to IgE is a tightly regulated process central to atopic disease. To profile the B-cell transcriptional responses underlying the activation of the germinal centre activities leading to the generation of IgE, naïve human B-cells were stimulated with IL-4 and anti-CD40. Gene expression and alternative splicing were profiled over 12 days using the Affymetrix Human Exon 1.0 ST Array. A total of 1,399 genes, forming 13 temporal profiles were differentially expressed. CCL22 and CCL17 were dramatically induced but followed a temporal trajectory distinct from classical mediators of isotype switching. AICDA, NFIL3, IRF4, XBP1 and BATF3 shared a profile with several genes involved in innate immunity, but with no recognised role in CSR. A transcription factor BHLHE40 was identified at the core of this profile. B-cell activation was also accompanied by variation in exon retention affecting >200 genes including CCL17. The data indicate a circadian component and central roles for the Th2 chemokines CCL22 and CCL17 in the activation of CSR.
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28
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Webb LV, Ley SC, Seddon B. TNF activation of NF-κB is essential for development of single-positive thymocytes. J Exp Med 2016; 213:1399-407. [PMID: 27432943 PMCID: PMC4986527 DOI: 10.1084/jem.20151604] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 05/27/2016] [Indexed: 01/19/2023] Open
Abstract
Seddon and colleagues study mice whose T cells lack both of the catalytic subunits of the IKK complex and show that impaired TNF receptor activation of NF-κB is responsible for their block in thymocyte development. NF-κB activation has been implicated at multiple stages of thymic development of T cells, during which it is thought to mediate developmental signals originating from the T cell receptor (TCR). However, the Card11–Bcl10–Malt1 (CBM) complex that is essential for TCR activation of NF-κB in peripheral T cells is not required for thymocyte development. It has remained unclear whether the TCR activates NF-κB independent of the CBM complex in thymocyte development or whether another NF-κB activating receptor is involved. In the present study, we generated mice in which T cells lacked expression of both catalytic subunits of the inhibitor of κB kinase (IKK) complex, IKK1 and IKK2, to investigate this question. Although early stages of T cell development were unperturbed, maturation of CD4 and CD8 single-positive (SP) thymocytes was blocked in mice lacking IKK1/2 in the T cell lineage. We found that IKK1/2-deficient thymocytes were specifically sensitized to TNF-induced cell death in vitro. Furthermore, the block in thymocyte development in IKK1/2-deficient mice could be rescued by blocking TNF with anti-TNF mAb or by ablation of TNFRI expression. These experiments reveal an essential role for TNF activation of NF-κB to promote the survival and development of single positive T cells in the thymus.
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Affiliation(s)
- Louise V Webb
- Institute of Immunity and Transplantation, Division of Infection and Immunity, University College London, Royal Free Hospital, Rowland Hill Street, London NW3 2PF, England, UK
| | - Steven C Ley
- Francis Crick Institute, Mill Hill Laboratories, London NW7 1AA, England, UK
| | - Benedict Seddon
- Institute of Immunity and Transplantation, Division of Infection and Immunity, University College London, Royal Free Hospital, Rowland Hill Street, London NW3 2PF, England, UK
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29
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Sanchez-Paulete AR, Labiano S, Rodriguez-Ruiz ME, Azpilikueta A, Etxeberria I, Bolaños E, Lang V, Rodriguez M, Aznar MA, Jure-Kunkel M, Melero I. Deciphering CD137 (4-1BB) signaling in T-cell costimulation for translation into successful cancer immunotherapy. Eur J Immunol 2016; 46:513-22. [PMID: 26773716 DOI: 10.1002/eji.201445388] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 12/29/2015] [Accepted: 01/11/2016] [Indexed: 01/22/2023]
Abstract
CD137 (4-1BB, TNF-receptor superfamily 9) is a surface glycoprotein of the TNFR family which can be induced on a variety of leukocyte subsets. On T and NK cells, CD137 is expressed following activation and, if ligated by its natural ligand (CD137L), conveys polyubiquitination-mediated signals via TNF receptor associated factor 2 that inhibit apoptosis, while enhancing proliferation and effector functions. CD137 thus behaves as a bona fide inducible costimulatory molecule. These functional properties of CD137 can be exploited in cancer immunotherapy by systemic administration of agonist monoclonal antibodies, which increase anticancer CTLs and enhance NK-cell-mediated antibody-dependent cell-mediated cytotoxicity. Reportedly, anti-CD137 mAb and adoptive T-cell therapy strongly synergize, since (i) CD137 expression can be used to select the T cells endowed with the best activities against the tumor, (ii) costimulation of the lymphocyte cultures to be used in adoptive T-cell therapy can be done with CD137 agonist antibodies or CD137L, and (iii) synergistic effects upon coadministration of T cells and antibodies are readily observed in mouse models. Furthermore, the signaling cytoplasmic tail of CD137 is a key component of anti-CD19 chimeric antigen receptors that are used to redirect T cells against leukemia and lymphoma in the clinic. Ongoing phase II clinical trials with agonist antibodies and the presence of CD137 sequence in these successful chimeric antigen receptors highlight the importance of CD137 in oncoimmunology.
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Affiliation(s)
- Alfonso R Sanchez-Paulete
- Division of Immunology and Immunotherapy, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain.,Instituto de Investigación Sanitaria de Navarra (IdISNA), Pamplona, Spain
| | - Sara Labiano
- Division of Immunology and Immunotherapy, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain.,Instituto de Investigación Sanitaria de Navarra (IdISNA), Pamplona, Spain
| | - Maria E Rodriguez-Ruiz
- Division of Immunology and Immunotherapy, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain.,Instituto de Investigación Sanitaria de Navarra (IdISNA), Pamplona, Spain.,University Clinic, University of Navarra, Pamplona, Spain
| | - Arantza Azpilikueta
- Division of Immunology and Immunotherapy, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain.,Instituto de Investigación Sanitaria de Navarra (IdISNA), Pamplona, Spain
| | - Iñaki Etxeberria
- Division of Immunology and Immunotherapy, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain.,Instituto de Investigación Sanitaria de Navarra (IdISNA), Pamplona, Spain
| | - Elixabet Bolaños
- Division of Immunology and Immunotherapy, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain.,Instituto de Investigación Sanitaria de Navarra (IdISNA), Pamplona, Spain
| | - Valérie Lang
- Ubiquitylation and Cancer Molecular Biology Laboratory, Foundation for Stem Cell Research, Fundación Inbiomed, San Sebastián, Spain
| | - Manuel Rodriguez
- Advanced Technology Institute in Life Sciences (ITAV), CNRS-USR3505, Toulouse, France.,University of Toulouse III-Paul Sabatier, Toulouse, France.,Institut de Pharmacologie et de Biologie Structurale (IPBS), CNRS-UMR5089, Toulouse, France
| | - M Angela Aznar
- Division of Immunology and Immunotherapy, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
| | | | - Ignacio Melero
- Division of Immunology and Immunotherapy, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain.,Instituto de Investigación Sanitaria de Navarra (IdISNA), Pamplona, Spain.,University Clinic, University of Navarra, Pamplona, Spain
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30
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Liang Y, Meng S, Zhang JA, Zhu YF, Li C, Yang XJ, Jiang WJ, He ST, Xu J. Tumor necrosis factor receptor-associated factor 1 (TRAF1) polymorphisms and susceptibility to autoimmune thyroid disease. Autoimmunity 2015; 49:84-9. [PMID: 26699338 DOI: 10.3109/08916934.2015.1124423] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Former studies have revealed the link between the tumor necrosis factor (TNF) receptor-associated factor 1 (TRAF1) polymorphisms and autoimmunity. In the present study, we took an opportunity to investigate the association between TRAF1 and autoimmune thyroid disease (AITD) in order to find a new susceptibility gene. A total of 1029 AITD patients [677 Graves' disease (GD) patients and 352 Hashimoto thyroiditis (HT) patients] and 899 controls were enrolled. We used matrix-assisted laser desorption ionization-time of flight mass spectrometer (MALDI-TOF-MS) to detect the polymorphisms of rs4836834, rs10760130, rs10818488, rs2239658, rs2900180. We also explored the association between polymorphisms and clinical subphenotypes. Genotype frequencies of the five loci in all AITD patients were significantly different from those of controls. Genotype frequencies of rs10760130, rs2239658 and rs2900180 in GD patients were significantly different from controls. Allele analysis found that T allele of rs4836834, G allele of rs10760130, A allele of rs10818488, T allele of rs2239658 and T allele of rs2900180 were significantly higher in GD and AITD patients. No significant differences were found between HT patients and controls. Haplotype analysis found three haplotypes including ACAGC, TTGAT and TCGAC. ACAGC frequencies were significantly lower in GD and HT patients. However, TTGAT frequency was only significantly higher in GD patients. No significant results were found between polymorphisms and clinical subphenotypes. Our study reveals TRAF1 as a susceptibility gene of AITD in Chinese Han population.
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Affiliation(s)
- Yan Liang
- a Clinical Research Center, the First Affiliated Hospital of Xi'an Jiaotong University Health Science Center , Xi'an , China and
| | - Shuai Meng
- b Department of Endocrinology , Jinshan Hospital of Fudan University , Shanghai , China
| | - Jin-an Zhang
- b Department of Endocrinology , Jinshan Hospital of Fudan University , Shanghai , China
| | - Yuan-feng Zhu
- a Clinical Research Center, the First Affiliated Hospital of Xi'an Jiaotong University Health Science Center , Xi'an , China and
| | - Cui Li
- a Clinical Research Center, the First Affiliated Hospital of Xi'an Jiaotong University Health Science Center , Xi'an , China and
| | - Xiang-ju Yang
- a Clinical Research Center, the First Affiliated Hospital of Xi'an Jiaotong University Health Science Center , Xi'an , China and
| | - Wen-juan Jiang
- b Department of Endocrinology , Jinshan Hospital of Fudan University , Shanghai , China
| | - Shuang-tao He
- b Department of Endocrinology , Jinshan Hospital of Fudan University , Shanghai , China
| | - Jian Xu
- b Department of Endocrinology , Jinshan Hospital of Fudan University , Shanghai , China
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IFI16 Expression Is Related to Selected Transcription Factors during B-Cell Differentiation. J Immunol Res 2015; 2015:747645. [PMID: 26185770 PMCID: PMC4491573 DOI: 10.1155/2015/747645] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 04/27/2015] [Accepted: 05/14/2015] [Indexed: 01/21/2023] Open
Abstract
The interferon-inducible DNA sensor IFI16 is involved in the modulation of cellular survival, proliferation, and differentiation. In the hematopoietic system, IFI16 is consistently expressed in the CD34+ stem cells and in peripheral blood lymphocytes; however, little is known regarding its regulation during maturation of B- and T-cells. We explored the role of IFI16 in normal B-cell subsets by analysing its expression and relationship with the major transcription factors involved in germinal center (GC) development and plasma-cell (PC) maturation. IFI16 mRNA was differentially expressed in B-cell subsets with significant decrease in IFI16 mRNA in GC and PCs with respect to naïve and memory subsets. IFI16 mRNA expression is inversely correlated with a few master regulators of B-cell differentiation such as BCL6, XBP1, POU2AF1, and BLIMP1. In contrast, IFI16 expression positively correlated with STAT3, REL, SPIB, RELA, RELB, IRF4, STAT5B, and STAT5A. ARACNE algorithm indicated a direct regulation of IFI16 by BCL6, STAT5B, and RELB, whereas the relationship between IFI16 and the other factors is modulated by intermediate factors. In addition, analysis of the CD40 signaling pathway showed that IFI16 gene expression directly correlated with NF-κB activation, indicating that IFI16 could be considered an upstream modulator of NF-κB in human B-cells.
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de Rivero Vaccari JC, Brand FJ, Berti AF, Alonso OF, Bullock MR, de Rivero Vaccari JP. Mincle Signaling in the Innate Immune Response after Traumatic Brain Injury. J Neurotrauma 2015; 32:228-36. [DOI: 10.1089/neu.2014.3436] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
- Juan Carlos de Rivero Vaccari
- Ophthalmology Department, Louisiana State University School of Medicine/Ochsner Medical Center, New Orleans, Louisiana
| | - Frank J. Brand
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, Miller School of Medicine,University of Miami, Miami, Florida
| | - Aldo F. Berti
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, Miller School of Medicine,University of Miami, Miami, Florida
| | - Ofelia F. Alonso
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, Miller School of Medicine,University of Miami, Miami, Florida
| | - M. Ross Bullock
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, Miller School of Medicine,University of Miami, Miami, Florida
| | - Juan Pablo de Rivero Vaccari
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, Miller School of Medicine,University of Miami, Miami, Florida
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El-Mesery M, Seher A, Stühmer T, Siegmund D, Wajant H. MLN4924 sensitizes monocytes and maturing dendritic cells for TNF-dependent and -independent necroptosis. Br J Pharmacol 2015; 172:1222-36. [PMID: 25363690 DOI: 10.1111/bph.12998] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 10/16/2014] [Accepted: 10/21/2014] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND AND PURPOSE MLN4924 prevents the formation of active cullin-RING ubiquitin ligase complexes and thus inhibits NF-κB signalling. Here, we evaluated the effects of this compound on monocytes and dendritic cells (DCs). EXPERIMENTAL APPROACH Monocytes and DCs were challenged with TNF or LPS in the presence and absence of MLN4924. The effects of MLN4924 on cellular viability, pro-inflammatory gene induction and DC maturation were investigated using the MTT assay, elisa and FACS analysis. Mechanisms of cell death induction were evaluated by using inhibitors of caspases, RIPK1 and MLKL. KEY RESULTS MLN4924 inhibited NF-κB activation and sensitized monocytes and immature DCs (iDCs) for TNFR1-induced cell death. Neither the caspase inhibitor zVAD-fmk, the RIPK1 inhibitor necrostatin-1 (nec-1) nor the MLKL inhibitor necrosulfonamide (NSA) alone prevented TNF-induced cell death. A combination of zVAD-fmk and nec-1 or NSA, however, rescued monocytes and iDCs from MLN4924/TNF-induced cell death indicating that MLN4924 affects anti-apoptotic and anti-necrotic activities in TNFR1 signalling. MLN4924 also converted the response of iDCs to LPS from maturation to cell death. LPS-induced cell death in MLN4924-treated iDCs was again only effectively blocked by cotreatment with zVAD-fmk and nec-1 or NSA. Noteworthy, MLN4924/LPS-induced cell death was almost completely independent of endogenous TNF. MLN4924 also strongly inhibited maturation and activation of iDCs that were rescued from cell death by zVAD-fmk and nec-1. CONCLUSIONS AND IMPLICATIONS Our data reveal a strong dual suppressive effect of MLN4924 on DC activity. The targeting of NAE by MLN4924 could be a new way to treat inflammatory diseases.
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Affiliation(s)
- Mohamed El-Mesery
- Division of Molecular Internal Medicine, Department of Internal Medicine II, University Hospital Würzburg, Würzburg, Germany; Department of Biochemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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Zhang XF, Zhang R, Huang L, Wang PX, Zhang Y, Jiang DS, Zhu LH, Tian S, Zhang XD, Li H. TRAF1 is a key mediator for hepatic ischemia/reperfusion injury. Cell Death Dis 2014; 5:e1467. [PMID: 25321474 PMCID: PMC4649517 DOI: 10.1038/cddis.2014.411] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 07/21/2014] [Indexed: 12/14/2022]
Abstract
Tumor necrosis factor receptor-associated factor 1 (TRAF1), an adapter in signal transduction, is involved in immunity and in apoptotic processes in various cell types. However, little is known about its function and the molecular mechanism of its activation during liver injury. This study tested the hypothesis that TRAF1 is a mediator of cell injury after hepatic ischemia/reperfusion injury (I/R). In a mouse hepatic I/R injury model, we found that TRAF1 expression was highly induced. TRAF1 deficiency was liver protective, whereas sustained TRAF1 overexpression aggravated liver injury in response to hepatic I/R injury. Mechanistic studies demonstrated that a deficiency of TRAF1 in cultured hepatocytes led to the inhibition of NF-κB-mediated inflammatory responses, suppression of the ASK/JNK pro-death pathway and promotion of cellular regeneration capacity. In contrast, the converse occurred in hepatocyte-specific TRAF1 transgenic mice. TRAF1 activated the ASK1/JNK pathway and promoted hepatic injury. Our study demonstrates that TRAF1 is a crucial early mediator of hepatic I/R injury and suggests that TRAF1 may be a potential gene therapy target for the treatment of liver injury.
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Affiliation(s)
- X-F Zhang
- College of Life Sciences, Wuhan University, Wuhan, PR China
| | - R Zhang
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - L Huang
- 1] Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China [2] Cardiovascular Research Institute, Wuhan University, Wuhan, China
| | - P-X Wang
- 1] Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China [2] Cardiovascular Research Institute, Wuhan University, Wuhan, China
| | - Y Zhang
- 1] Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China [2] Cardiovascular Research Institute, Wuhan University, Wuhan, China
| | - D-S Jiang
- 1] Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China [2] Cardiovascular Research Institute, Wuhan University, Wuhan, China
| | - L-H Zhu
- 1] Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China [2] Cardiovascular Research Institute, Wuhan University, Wuhan, China
| | - S Tian
- 1] Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China [2] Cardiovascular Research Institute, Wuhan University, Wuhan, China
| | - X-D Zhang
- College of Life Sciences, Wuhan University, Wuhan, PR China
| | - H Li
- 1] Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China [2] Cardiovascular Research Institute, Wuhan University, Wuhan, China
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TRAF1 is a critical regulator of cerebral ischaemia-reperfusion injury and neuronal death. Nat Commun 2014; 4:2852. [PMID: 24284943 PMCID: PMC3868160 DOI: 10.1038/ncomms3852] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Accepted: 10/31/2013] [Indexed: 01/08/2023] Open
Abstract
Stroke is a leading global cause of mortality and disability. Less than 5% of patients are able to receive tissue plasminogen activator thrombolysis within the necessary timeframe. Focusing on the process of neuronal apoptosis in the penumbra, which lasts from hours to days after ischaemia, appears to be promising. Here we report that tumour necrosis factor receptor-associated factor 1 (TRAF1) expression is markedly induced in wild-type mice 6 h after stroke onset. Using genetic approaches, we demonstrate that increased neuronal TRAF1 leads to elevated neuronal death and enlarged ischaemic lesions, whereas TRAF1 deficiency is neuroprotective. In addition, TRAF1-mediated neuroapoptosis correlates with the activation of the JNK pro-death pathway and inhibition of the Akt cell survival pathway. Finally, TRAF1 is found to exert pro-apoptotic effects via direct interaction with ASK1. Thus, ASK1 positively and negatively regulates the JNK and Akt signalling pathways, respectively. Targeting the TRAF1/ASK1 pathway may provide feasible therapies for stroke long after onset.
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Carmona Arana JA, Seher A, Neumann M, Lang I, Siegmund D, Wajant H. TNF Receptor-Associated Factor 1 is a Major Target of Soluble TWEAK. Front Immunol 2014; 5:63. [PMID: 24600451 PMCID: PMC3927163 DOI: 10.3389/fimmu.2014.00063] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Accepted: 02/03/2014] [Indexed: 12/18/2022] Open
Abstract
Soluble tumor necrosis factor (TNF)-like weak inducer of apoptosis (TWEAK), in contrast to membrane TWEAK and TNF, is only a weak activator of the classical NFκB pathway. We observed that soluble TWEAK was regularly more potent than TNF with respect to the induction of TNF receptor-associated factor 1 (TRAF1), a NFκB-controlled signaling protein involved in the regulation of inflammatory signaling pathways. TNF-induced TRAF1 expression was efficiently blocked by inhibition of the classical NFκB pathway using the IKK2 inhibitor, TPCA1. In contrast, in some cell lines, TWEAK-induced TRAF1 production was only partly inhibited by TPCA1. The NEDD8-activating enzyme inhibitor MLN4924, however, which inhibits classical and alternative NFκB signaling, blocked TNF- and TWEAK-induced TRAF1 expression. This suggests that TRAF1 induction by soluble TWEAK is based on the cooperative activity of the two NFκB signaling pathways. We have previously shown that oligomerization of soluble TWEAK results in ligand complexes with membrane TWEAK-like activity. Oligomerization of soluble TWEAK showed no effect on the dose response of TRAF1 induction, but potentiated the ability of soluble TWEAK to trigger production of the classical NFκB-regulated cytokine IL8. Transfectants expressing soluble TWEAK and membrane TWEAK showed similar induction of TRAF1 while only the membrane TWEAK expressing cells robustly stimulated IL8 production. These data indicate that soluble TWEAK may efficiently induce a distinct subset of the membrane TWEAK-targeted genes and argue again for a crucial role of classical NFκB pathway-independent signaling in TWEAK-induced TRAF1 expression. Other TWEAK targets, which can be equally well induced by soluble and membrane TWEAK, remain to be identified and the relevance of the ability of soluble TWEAK to induce such a distinct subset of membrane TWEAK-targeted genes for TWEAK biology will have to be clarified in future studies.
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Affiliation(s)
- José Antonio Carmona Arana
- Division of Molecular Internal Medicine, Department of Internal Medicine II, University Hospital Würzburg , Würzburg , Germany
| | - Axel Seher
- Department of Oral and Maxillofacial Plastic Surgery, University Hospital Würzburg , Würzburg , Germany
| | - Manfred Neumann
- Division of Molecular Internal Medicine, Department of Internal Medicine II, University Hospital Würzburg , Würzburg , Germany
| | - Isabell Lang
- Division of Molecular Internal Medicine, Department of Internal Medicine II, University Hospital Würzburg , Würzburg , Germany
| | - Daniela Siegmund
- Division of Molecular Internal Medicine, Department of Internal Medicine II, University Hospital Würzburg , Würzburg , Germany
| | - Harald Wajant
- Division of Molecular Internal Medicine, Department of Internal Medicine II, University Hospital Würzburg , Würzburg , Germany
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Kou X, Jing Y, Deng W, Sun K, Han Z, Ye F, Yu G, Fan Q, Gao L, Zhao Q, Zhao X, Li R, Wei L, Wu M. Tumor necrosis factor-α attenuates starvation-induced apoptosis through upregulation of ferritin heavy chain in hepatocellular carcinoma cells. BMC Cancer 2013; 13:438. [PMID: 24066693 PMCID: PMC3849379 DOI: 10.1186/1471-2407-13-438] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Accepted: 09/19/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Tumor microenviroment is characteristic of inflammation, ischemia and starvation of nutrient. TNF-α, which is an extraordinarily pleiotropic cytokine, could be an endogenous tumor promoter in some tumor types. The basic objective of this study was to investigate the effects of TNF-α on the cell viability and apoptosis of hepatocellular carcinoma cells under serum starvation, and to identify the molecular mechanisms involved. METHODS For this purpose, five different concentrations of TNF-α and two different serum settings (serum-cultured and serum-deprived) were used to investigate the effects of TNF-α on the cell viability and apoptosis of Hep3B and SMMC-7721 cells. RESULTS TNF-α (10 ng/ml) attenuated serum starvation-induced apoptosis of hepatocellular carcinoma cells, and autophagy conferred this process. BAY11-7082, a specific inhibitor of NF-κB, reversed the suppression of serum starvation-induced apoptosis by TNF-α. Moreover, TNF-α-induced NF-κB transactivation was suppressed by autophagy inhibitor 3-MA. In addition, TNF-α up-regulated Ferritin heavy chain (FHC) transiently by NF-κB activation and FHC levels were correlated with the TNF-α-induced protection against serum starvation-mediated apoptosis of hepatocellular carcinoma cells. Furthermore, FHC-mediated inhibition of apoptosis depended on suppressing ROS accumulation. CONCLUSIONS Our findings suggested that autophagy conferred the TNF-α protection against serum starvation-mediated apoptosis of hepatocellular carcinoma cells, the mechanism involved with the activation of the TNF-α/ NF-κB /FHC signaling pathway.
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Affiliation(s)
- Xingrui Kou
- Tumor Immunology and Gene Therapy Center, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, 225 Changhai Road, Shanghai 200438, P, R China.
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Kim MY, Muto J, Gallo RL. Hyaluronic acid oligosaccharides suppress TLR3-dependent cytokine expression in a TLR4-dependent manner. PLoS One 2013; 8:e72421. [PMID: 24058413 PMCID: PMC3751928 DOI: 10.1371/journal.pone.0072421] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Accepted: 07/09/2013] [Indexed: 11/30/2022] Open
Abstract
The release of endogenous molecules from the skin after injury has been proposed to influence inflammation. Recent studies have found that pro-inflammatory signals can be generated by damaged endogenous self-RNA, and this event is detected by TLR3. Conversely, release of endogenous fragments of hyaluronic acid (HA) after injury has been proposed to inhibit LPS induced inflammation driven by TLR4. In this study we investigated if HA oligomers could also influence inflammation mediated by TLR3. A tetramer form of HA (oligo-HA) was added to MH-S cells (mouse alveolar macrophage cell line) that were then activated by poly(I:C). ELISA analysis of culture supernatants showed that the presence of oligo-HA suppressed the poly(I:C) induced release of IL-6 and TNFα. IL-6 mRNA expression was also suppressed as measured by quantitative RT-PCR. To determine the mechanism of action for oligo-HA to inhibit poly(I:C), macrophages derived from wild-type (WT), Tlr2−/− or Tlr4−/− mice were treated with oligo-HA and poly(I:C). Similar to WT cells, Tlr2−/− macrophages were inhibited by oligo-HA and retained suppression of cytokine release. In contrast, Tlr4−/− macrophages lost the capacity to be suppressed by oligo-HA. An increase in Traf1 (TLR negative regulator) mRNA was observed after oligo-HA treatment of WT but not in Tlr4−/− macrophages, and oligo-HA did not suppress cytokine responsiveness in Traf1−/− macrophages. These results show that oligo-HA acts through TLR4 and TRAF1 to inhibit TLR3-dependent inflammation. This observation illustrates the complex immunomodulatory action of endogenous products released after injury.
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Affiliation(s)
- Margaret Y. Kim
- Division of Dermatology, University of California San Diego and VA San Diego Health Care System, San Diego, California, United States of America
| | - Jun Muto
- Division of Dermatology, University of California San Diego and VA San Diego Health Care System, San Diego, California, United States of America
| | - Richard L. Gallo
- Division of Dermatology, University of California San Diego and VA San Diego Health Care System, San Diego, California, United States of America
- * E-mail:
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Sabbagh L, Andreeva D, Laramée GD, Oussa NAE, Lew D, Bisson N, Soumounou Y, Pawson T, Watts TH. Leukocyte-specific protein 1 links TNF receptor-associated factor 1 to survival signaling downstream of 4-1BB in T cells. J Leukoc Biol 2013; 93:713-21. [PMID: 23446150 DOI: 10.1189/jlb.1112579] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
4-1BB is a member of the TNFR superfamily, which contributes to the activation of signaling pathways required for the survival of activated and memory T cells. We have shown previously that TRAF1, an adaptor protein recruited to 4-1BB, is required for 4-1BB-mediated CD8 T cell survival in vivo. With the use of a proteomics approach in primary T cells, we have identified LSP1 as a novel protein recruited to the 4-1BB signaling complex in a TRAF1-dependent manner. Further characterization of the interaction between TRAF1 and LSP1 revealed that LSP1 requires the TRAF-N domain of TRAF1 for direct association. Similarly to TRAF1(-/-) T cells, LSP1(-/-) T cells exhibit impaired ERK activation following stimulation through 4-1BB and consequently, are unable to down-modulate expression of the proapoptotic Bcl-2 family member Bim. Moreover, we demonstrate that the absence of LSP1 expression leads to defective expansion and survival of T cells in response to 4-1BB stimulation. Thus, we have identified LSP1 as a new mediator involved in 4-1BB signaling and T cell survival. Collectively, our work shows that TRAF1 and LSP1 cooperate downstream of 4-1BB to activate ERK signaling and down-modulate the levels of Bim leading to enhanced T cell survival.
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Affiliation(s)
- Laurent Sabbagh
- Maisonneuve-Rosemont Hospital Research Centre, Montreal, Quebec, Canada.
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Scheinman R. NF-κB and Rheumatoid Arthritis: Will Understanding Genetic Risk Lead to a Therapeutic Reward? ACTA ACUST UNITED AC 2013; 4:93-110. [PMID: 24678426 DOI: 10.1615/forumimmundisther.2013008408] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
NF-κB has long been known to play an important role in autoimmune diseases such as rheumatoid arthritis (RA). Indeed, as our understanding of how NF-κB is utilized has increased, we have been hard put to find a process not associated with this transcription factor family in some way. However, new data originating, in part, from genome-wide association studies have demonstrated that very specific alterations in components of the NF-κB pathway are sufficient to confer increased risk of developing disease. Here we review the data which have identified specific components of the NF-κB pathway, and consider what is known of their mechanisms of action and how these mechanisms might play into the disease process. In addition, the use of genetic information to predict RA is considered.
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Affiliation(s)
- Robert Scheinman
- University of Colorado Denver, School of Pharmacy, Department of Pharmaceutical Sciences, Aurora, CO 80045;
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Saklani A, Hegde B, Mishra P, Singh R, Mendon M, Chakrabarty D, Kamath DV, Lobo A, Mishra PD, Dagia NM, Padigaru M, Kulkarni-Almeida AA. NF-κB dependent anti-inflammatory activity of chlorojanerin isolated from Saussurea heteromalla. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2012; 19:988-997. [PMID: 22762939 DOI: 10.1016/j.phymed.2012.05.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Revised: 04/25/2012] [Accepted: 05/29/2012] [Indexed: 06/01/2023]
Abstract
Medicinal plants have shown great promise as a source of novel drug compounds for the treatment of inflammatory disorders. In our search for new entities with anti-inflammatory potential, the extracts of the whole plant of Saussurea heteromalla (family-Asteraceae), collected from Himalayas, were evaluated in the high throughput screen for TNF-α and IL-6 inhibitors. The extract blocked TNF-α and IL-6 production in LPS stimulated THP-1 cells (human acute monocyte leukemia cell line) completely at 10 and 30 μg/ml. The plant has been found as a new source of chlorojanerin, a guaianolide type of sesquiterpene lactone. Chlorojanerin was shown to be significantly effective in inhibiting TNF-α and IL-6 production in LPS-stimulated THP-1 cells (IC(50)=2.3±0.2 μM and 1.8±0.7 μM respectively). The compound also blocked TNF-α and IL-6 production from LPS-stimulated human monocytes (IC(50)=1.5±0.4 and 0.7±0.2 μM respectively) and synovial cells from a patient with rheumatoid arthritis (IC(50)<0.03 and 0.5 μM respectively). Transcriptional profiling of the LPS stimulated THP-1 cells revealed that chlorojanerin exerted its anti-inflammatory effect by inhibiting the expression of 8 genes involved in activating the transcription factor - NF-κB. Real time analysis of these genes validated the effect of chlorojanerin on the classical downstream targets of NF-κB. Thus, this study clearly delineated 8 genes which were specifically mitigated due to the effect of chlorojanerin on NF-κB induced signaling at the mRNA level. Further, chlorojanerin at 5 μM also inhibited the binding of NF-κB in a GFP reporter assay system by 55.5% thus validating the microarray gene expression data. This work is a step towards the isolation and characterization of lead anti-inflammatory agents from the extract of Saussurea heteromalla, which can be developed into better therapeutic molecules targeted towards some specific inflammatory diseases.
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Affiliation(s)
- Arvind Saklani
- Department of Natural Products-Botany, Piramal Healthcare Limited, 1 Nirlon Complex, Goregaon (East), Mumbai 400063, India
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Sun X, Icli B, Wara AK, Belkin N, He S, Kobzik L, Hunninghake GM, Vera MP, Blackwell TS, Baron RM, Feinberg MW. MicroRNA-181b regulates NF-κB-mediated vascular inflammation. J Clin Invest 2012; 122:1973-90. [PMID: 22622040 DOI: 10.1172/jci61495] [Citation(s) in RCA: 270] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2011] [Accepted: 03/14/2012] [Indexed: 12/22/2022] Open
Abstract
EC activation and dysfunction have been linked to a variety of vascular inflammatory disease states. The function of microRNAs (miRNAs) in vascular EC activation and inflammation remains poorly understood. Herein, we report that microRNA-181b (miR-181b) serves as a potent regulator of downstream NF-κB signaling in the vascular endothelium by targeting importin-α3, a protein that is required for nuclear translocation of NF-κB. Overexpression of miR-181b inhibited importin-α3 expression and an enriched set of NF-κB-responsive genes such as adhesion molecules VCAM-1 and E-selectin in ECs in vitro and in vivo. In addition, treatment of mice with proinflammatory stimuli reduced miR-181b expression. Rescue of miR-181b levels by systemic administration of miR-181b "mimics" reduced downstream NF-κB signaling and leukocyte influx in the vascular endothelium and decreased lung injury and mortality in endotoxemic mice. In contrast, miR-181b inhibition exacerbated endotoxin-induced NF-κB activity, leukocyte influx, and lung injury. Finally, we observed that critically ill patients with sepsis had reduced levels of miR-181b compared with control intensive care unit (ICU) subjects. Collectively, these findings demonstrate that miR-181b regulates NF-κB-mediated EC activation and vascular inflammation in response to proinflammatory stimuli and that rescue of miR-181b expression could provide a new target for antiinflammatory therapy and critical illness.
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Affiliation(s)
- Xinghui Sun
- Department of Medicine, Cardiovascular Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
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Abstract
Extensive research has been performed to unravel the mechanistic signaling pathways mediated by tumor necrosis factor receptor 1 (TNFR1), by contrast there is limited knowledge on cellular signaling upon activation of TNFR2. Recently published data have revealed that these two receptors not only function independently, but also can influence each other via cross-talk between the different signaling pathways initiated by TNFR1 and TNFR2 stimulation. Furthermore, the complexity of this cross-talk is also dependent on the different signaling kinetics between TNFR1 and TNFR2, by which a delicate balance between cell survival and apoptosis can be maintained. Some known signaling factors and the kinetics that are involved in the receptor cross-talk between TNFR1 and TNFR2 are the topic of this review.
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Affiliation(s)
- Petrus J W Naudé
- Department of Molecular Neurobiology, University of Groningen, The Netherlands
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Sughra K, Birbach A, de Martin R, Schmid JA. Interaction of the TNFR-receptor associated factor TRAF1 with I-kappa B kinase-2 and TRAF2 indicates a regulatory function for NF-kappa B signaling. PLoS One 2010; 5:e12683. [PMID: 20856938 PMCID: PMC2938345 DOI: 10.1371/journal.pone.0012683] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2010] [Accepted: 08/12/2010] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND I-kappa B kinase 2 (IKK2 or IKK-beta) is one of the most crucial signaling kinases for activation of NF-kappa B, a transcription factor that is important for inflammation, cell survival and differentiation. Since many NF-kappa B activating pathways converge at the level of IKK2, molecular interactions of this kinase are pivotal for regulation of NF-kappa B signaling. METHODOLOGY/PRINCIPAL FINDINGS We searched for proteins interacting with IKK2 using the C-terminal part (amino acids 466-756) as bait in a yeast two-hybrid system and identified the N-terminal part (amino acids 1-228) of the TNF-receptor associated factor TRAF1 as putative interaction partner. The interaction was confirmed in human cells by mammalian two-hybrid and coimmunoprecipitation experiments. The IKK2/TRAF1 interaction seemed weaker than the interaction between TRAF1 and TRAF2, an important activating adapter molecule of NF-kappa B signaling. Reporter gene and kinase assays using ectopic expression of TRAF1 indicated that it can both activate and inhibit IKK2 and NF-kappa B. Co-expression of fluorescently tagged TRAF1 and TRAF2 at different ratios implied that TRAF1 can affect clustering and presumably the activating function of TRAF2 in a dose dependent manner. CONCLUSIONS/SIGNIFICANCE The observation that TRAF1 can either activate or inhibit the NF-kappa B pathway and the fact that it influences the oligomerization of TRAF2 indicates that relative levels of IKK2, TRAF1 and TRAF2 may be important for regulation of NF-kappa B activity. Since TRAF1 is an NF-kappa B induced gene, it might act as a feedback effector molecule.
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Affiliation(s)
- Kalsoom Sughra
- Department of Vascular Biology and Thrombosis Research, Center for Physiology and Pharmacology, Medical University Vienna, Vienna, Austria
| | - Andreas Birbach
- Department of Vascular Biology and Thrombosis Research, Center for Physiology and Pharmacology, Medical University Vienna, Vienna, Austria
| | - Rainer de Martin
- Department of Vascular Biology and Thrombosis Research, Center for Physiology and Pharmacology, Medical University Vienna, Vienna, Austria
| | - Johannes A. Schmid
- Department of Vascular Biology and Thrombosis Research, Center for Physiology and Pharmacology, Medical University Vienna, Vienna, Austria
- * E-mail:
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Prasad S, Yadav VR, Sundaram C, Reuter S, Hema PS, Nair MS, Chaturvedi MM, Aggarwal BB. Crotepoxide chemosensitizes tumor cells through inhibition of expression of proliferation, invasion, and angiogenic proteins linked to proinflammatory pathway. J Biol Chem 2010; 285:26987-27000. [PMID: 20576605 PMCID: PMC2930698 DOI: 10.1074/jbc.m110.121061] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2010] [Revised: 06/22/2010] [Indexed: 11/06/2022] Open
Abstract
Crotepoxide (a substituted cyclohexane diepoxide), isolated from Kaempferia pulchra (peacock ginger), although linked to antitumor and anti-inflammatory activities, the mechanism by which it exhibits these activities, is not yet understood. Because nuclear factor kappaB (NF-kappaB) plays a critical role in these signaling pathways, we investigated the effects of crotepoxide on NF-kappaB-mediated cellular responses in human cancer cells. We found that crotepoxide potentiated tumor necrosis factor (TNF), and chemotherapeutic agents induced apoptosis and inhibited the expression of NF-kappaB-regulated gene products involved in anti-apoptosis (Bcl-2, Bcl-xL, IAP1,(2) MCl-1, survivin, and TRAF1), apoptosis (Bax, Bid), inflammation (COX-2), proliferation (cyclin D1 and c-myc), invasion (ICAM-1 and MMP-9), and angiogenesis (VEGF). We also found that crotepoxide inhibited both inducible and constitutive NF-kappaB activation. Crotepoxide inhibition of NF-kappaB was not inducer-specific; it inhibited NF-kappaB activation induced by TNF, phorbol 12-myristate 13-acetate, lipopolysaccharide, and cigarette smoke. Crotepoxide suppression of NF-kappaB was not cell type-specific because NF-kappaB activation was inhibited in myeloid, leukemia, and epithelial cells. Furthermore, we found that crotepoxide inhibited TAK1 activation, which led to suppression of IkappaBalpha kinase, abrogation of IkappaBalpha phosphorylation and degradation, nuclear translocation of p65, and suppression of NF-kappaB-dependent reporter gene expression. Overall, our results indicate that crotepoxide sensitizes tumor cells to cytokines and chemotherapeutic agents through inhibition of NF-kappaB and NF-kappaB-regulated gene products, and this may provide the molecular basis for crotepoxide ability to suppress inflammation and carcinogenesis.
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Affiliation(s)
- Sahdeo Prasad
- Cytokine Research Laboratory, Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030
| | - Vivek R Yadav
- Cytokine Research Laboratory, Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030
| | - Chitra Sundaram
- Cytokine Research Laboratory, Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030
| | - Simone Reuter
- Cytokine Research Laboratory, Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030
| | - Padmanabhan S Hema
- Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum, Kerala 695019, India
| | - Mangalam S Nair
- Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum, Kerala 695019, India
| | - Madan M Chaturvedi
- Cytokine Research Laboratory, Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030
| | - Bharat B Aggarwal
- Cytokine Research Laboratory, Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030.
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46
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Yang L, Gu L, Li Z, Zhou M. Translation of TRAF1 is regulated by IRES-dependent mechanism and stimulated by vincristine. Nucleic Acids Res 2010; 38:4503-13. [PMID: 20413583 PMCID: PMC2910060 DOI: 10.1093/nar/gkq183] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
TRAF1 is a member of the TRAF family, which plays important roles in signal transduction that mediate cell life and death in the immune response, inflammatory and malignant diseases. It is known that TRAF1 transcription is inducible by various cytokines, but little is known about the regulation of its mRNA translation. In the present study, we demonstrated that the human TRAF1 mRNA has an unusually long 5′-UTR that contains internal ribosome entry segment (IRES) regulating its translation. By performing gene transfection and reporter assays, we revealed that this IRES sequence is located within the 572 nt upstream from the AUG start codon. An element between nt −392 and −322 was essential for the IRES activity. Interestingly, we found that the TRAF1 expression is induced in cancer cells by chemotherapeutic drug vincristine that regulates cytoplasmic localization of polypyrimidine tract binding protein, which may contribute to the IRES-dependent translation of TRAF1 during vincristine treatment. These results indicate that TRAF1 translation is initiated via the IRES and regulated by vincristine, and suggest that regulation of the IRES-dependent translation of TRAF1 may be involved in effecting the cancer cell response to vincristine treatment.
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Affiliation(s)
- Lin Yang
- Department of Pediatrics, Aflac Cancer Center and Blood Disorders Service, Emory University School of Medicine, Atlanta, GA 30322, USA
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Shi R, Re D, Dudl E, Cuddy M, Okolotowicz KJ, Dahl R, Su Y, Hurder A, Kitada S, Peddibhotla S, Roth GP, Smith LH, Kipps TJ, Cosford N, Cashman J, Reed JC. Chemical biology strategy reveals pathway-selective inhibitor of NF-kappaB activation induced by protein kinase C. ACS Chem Biol 2010; 5:287-99. [PMID: 20141195 DOI: 10.1021/cb9003089] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dysregulation of NF-kappaB activity contributes to many autoimmune and inflammatory diseases. At least nine pathways for NF-kappaB activation have been identified, most of which converge on the IkappaB kinases (IKKs). Although IKKs represent logical targets for potential drug discovery, chemical inhibitors of IKKs suppress all known NF-kappaB activation pathways and thus lack the selectivity required for safe use. A unique NF-kappaB activation pathway is initiated by protein kinase C (PKC) that is stimulated by antigen receptors and many growth factor receptors. Using a cell-based high-throughput screening (HTS) assay and chemical biology strategy, we identified a 2-aminobenzimidazole compound, CID-2858522, which selectively inhibits the NF-kappaB pathway induced by PKC, operating downstream of PKC but upstream of IKKbeta, without inhibiting other NF-kappaB activation pathways. In human B cells stimulated through surface immunoglobulin, CID-2858522 inhibited NF-kappaB DNA-binding activity and expression of endogenous NF-kappaB-dependent target gene, TRAF1. Altogether, as a selective chemical inhibitor of the NF-kappaB pathway induced by PKC, CID-2858522 serves as a powerful research tool and may reveal new paths toward therapeutically useful NF-kappaB inhibitors.
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Affiliation(s)
- Ranxin Shi
- Sanford-Burnham Medical Research Institute, La Jolla, San Diego, California 92037
| | - Daniel Re
- Sanford-Burnham Medical Research Institute, La Jolla, San Diego, California 92037
| | - Eric Dudl
- Sanford-Burnham Medical Research Institute, La Jolla, San Diego, California 92037
| | - Michael Cuddy
- Sanford-Burnham Medical Research Institute, La Jolla, San Diego, California 92037
| | | | - Russell Dahl
- Sanford-Burnham Medical Research Institute, La Jolla, San Diego, California 92037
- Conrad Prebys Center for Chemical Genomics, La Jolla, San Diego, California 92037 and Lake Nona, Orlando, Florida 32819
| | - Ying Su
- Sanford-Burnham Medical Research Institute, La Jolla, San Diego, California 92037
- Conrad Prebys Center for Chemical Genomics, La Jolla, San Diego, California 92037 and Lake Nona, Orlando, Florida 32819
| | - Andrew Hurder
- Sanford-Burnham Medical Research Institute, La Jolla, San Diego, California 92037
- Conrad Prebys Center for Chemical Genomics, La Jolla, San Diego, California 92037 and Lake Nona, Orlando, Florida 32819
| | - Shinichi Kitada
- Sanford-Burnham Medical Research Institute, La Jolla, San Diego, California 92037
| | | | - Gregory P. Roth
- Lake Nona, Orlando, Florida 32819
- Conrad Prebys Center for Chemical Genomics, La Jolla, San Diego, California 92037 and Lake Nona, Orlando, Florida 32819
| | - Layton H. Smith
- Lake Nona, Orlando, Florida 32819
- Conrad Prebys Center for Chemical Genomics, La Jolla, San Diego, California 92037 and Lake Nona, Orlando, Florida 32819
| | - Thomas J. Kipps
- University of California, San Diego, La Jolla, California 92093
| | - Nicholas Cosford
- Sanford-Burnham Medical Research Institute, La Jolla, San Diego, California 92037
- Conrad Prebys Center for Chemical Genomics, La Jolla, San Diego, California 92037 and Lake Nona, Orlando, Florida 32819
| | - John Cashman
- Human Biomolecular Research Institute, San Diego, California 92121
| | - John C. Reed
- Sanford-Burnham Medical Research Institute, La Jolla, San Diego, California 92037
- Conrad Prebys Center for Chemical Genomics, La Jolla, San Diego, California 92037 and Lake Nona, Orlando, Florida 32819
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Ha H, Han D, Choi Y. TRAF-mediated TNFR-family signaling. CURRENT PROTOCOLS IN IMMUNOLOGY 2009; Chapter 11:11.9D.1-11.9D.19. [PMID: 19918944 DOI: 10.1002/0471142735.im1109ds87] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The tumor necrosis factor (TNF) superfamily consists of a wide variety of cell-bound and secreted proteins that regulate numerous cellular processes. In particular, TNF-family proteins regulate the proliferation and death of tumor cells, as well as activated immune cells. This overview discusses the mammalian TNF receptor-associated factors (TRAFs), of which TRAF1, 2, 3, 5, and 6 have been shown to interact directly or indirectly with members of the TNF receptor superfamily. Structural features of TRAF proteins are described along with a discussion of TRAF-interacting proteins and the signaling pathways activated by the TRAF proteins. Finally, we examine the phenotypes observed in TRAF-knockout mice.
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Affiliation(s)
- Hyunil Ha
- University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania
| | - Daehee Han
- University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania
| | - Yongwon Choi
- University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania
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Elgueta R, Benson MJ, de Vries VC, Wasiuk A, Guo Y, Noelle RJ. Molecular mechanism and function of CD40/CD40L engagement in the immune system. Immunol Rev 2009; 229:152-72. [PMID: 19426221 DOI: 10.1111/j.1600-065x.2009.00782.x] [Citation(s) in RCA: 1010] [Impact Index Per Article: 67.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
SUMMARY During the generation of a successful adaptive immune response, multiple molecular signals are required. A primary signal is the binding of cognate antigen to an antigen receptor expressed by T and B lymphocytes. Multiple secondary signals involve the engagement of costimulatory molecules expressed by T and B lymphocytes with their respective ligands. Because of its essential role in immunity, one of the best characterized of the costimulatory molecules is the receptor CD40. This receptor, a member of the tumor necrosis factor receptor family, is expressed by B cells, professional antigen-presenting cells, as well as non-immune cells and tumors. CD40 binds its ligand CD40L, which is transiently expressed on T cells and other non-immune cells under inflammatory conditions. A wide spectrum of molecular and cellular processes is regulated by CD40 engagement including the initiation and progression of cellular and humoral adaptive immunity. In this review, we describe the downstream signaling pathways initiated by CD40 and overview how CD40 engagement or antagonism modulates humoral and cellular immunity. Lastly, we discuss the role of CD40 as a target in harnessing anti-tumor immunity. This review underscores the essential role CD40 plays in adaptive immunity.
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Affiliation(s)
- Raul Elgueta
- Department of Microbiology and Immunology, Dartmouth Medical School and The Norris Cotton Cancer Center, Lebanon, NH 03756, USA
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Wicovsky A, Salzmann S, Roos C, Ehrenschwender M, Rosenthal T, Siegmund D, Henkler F, Gohlke F, Kneitz C, Wajant H. TNF-like weak inducer of apoptosis inhibits proinflammatory TNF receptor-1 signaling. Cell Death Differ 2009; 16:1445-59. [PMID: 19557010 DOI: 10.1038/cdd.2009.80] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Soluble TNF-like weak inducer of apoptosis (TWEAK) trimers induce, in a variety of cell lines, translocation of cytosolic tumor necrosis factor (TNF) receptor-associated factor-2 (TRAF2) to a triton X-100-insoluble compartment without changes in the total cellular TRAF2 content. TWEAK-induced TRAF2 translocation is paralleled by a strong increase in nuclear factor kappaB 2 (NFkappaB2)/p100 processing to p52, indicating that TRAF2 redistribution is sufficient for activation of the alternative NFkappaB pathway. In accordance with the crucial role of TRAF2 in proinflammatory, anti-apoptotic TNF receptor-1 (TNFR1) signaling, we observed that TWEAK-primed cells have a reduced capacity to activate the classical NFkappaB pathway or JNK (cJun N-terminal kinase) in response to TNF. Furthermore, TWEAK-primed cells are sensitized for the TNFR1-mediated induction of apoptotic and necrotic cell death. Notably, the expression of the NFkappaB-regulated, TRAF2-interacting TRAF1 protein can attenuate TWEAK-induced depletion of the triton X-100-soluble TRAF2 fraction and improve TNFR1-induced NFkappaB signaling in TWEAK-primed cells. Taken together, we demonstrate that soluble TWEAK desensitizes cells for proinflammatory TNFR1 signaling and thus identify TWEAK as a modifier of TNF signaling.
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Affiliation(s)
- A Wicovsky
- Division of Molecular Internal Medicine, Department of Internal Medicine II, University Hospital Würzburg, Röntgenring 11, Würzburg 97070, Germany
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