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Shen X, Ruan Y, Zhao Y, Ye Q, Huang W, He L, He Q, Cai W. Ophiopogonin D alleviates acute lung injury by regulating inflammation via the STAT3/A20/ASK1 axis. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 130:155482. [PMID: 38824823 DOI: 10.1016/j.phymed.2024.155482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 02/11/2024] [Accepted: 02/23/2024] [Indexed: 06/04/2024]
Abstract
BACKGROUND Acute lung injury (ALI) is characterized by acute pulmonary inflammatory infiltration. Alveolar epithelial cells (AECs) release numerous pro-inflammatory cytokines, which result in the pathological changes seen in ALI. Ophiopogonin D (OD), extracted from the roots of Ophiopogon japonicus (Thunb.) Ker Gawl. (Liliaceae), reduces inflammation; however, the efficacy of OD in ALI has not been reported and the underlying molecular mechanisms remain unclear. PURPOSE This study investigated the anti-inflammatory effects of OD, as well as the underlying mechanisms, in AECs and a mouse ALI model. METHODS Lipopolysaccharide (LPS) and tumor necrosis factor-α (TNF-α) were used to stimulate macrophages and A549 cells, and a mouse ALI model was established by intratracheal LPS administration. The anti-inflammatory effects and mechanisms of OD in the TNF-α-induced in vitro inflammation model was evaluated using real-time quantitative polymerase chain reaction qPCR), enzyme-linked immunosorbent assay (ELISA), western blotting, nuclear and cytoplasmic protein extraction, and immunofluorescence. The in vivo anti-inflammatory activity of OD was evaluated using hematoxylin and eosin staining, qPCR, ELISA, and western blotting. RESULTS The bronchoalveolar lavage fluid and lung tissue of LPS-induced ALI mice exhibited increased TNF-α expression. TNF-α induced a significantly greater pro-inflammatory effect in AECs than LPS. OD reduced inflammation and mitogen-activated protein kinase (MAPK) and transcription factor p65 phosphorylation in vivo and in vitro and promoted signal transducer and activator of transcription 3 (STAT3) phosphorylation and A20 expression, thereby inducing apoptosis signal-regulating kinase 1 (ASK1) proteasomal degradation. CONCLUSION OD exerts an anti-inflammatory effect by promoting STAT3-dependent A20 expression and ASK1 degradation. OD may therefore have therapeutic value in treating ALI and other TNF-α-related inflammatory diseases.
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Affiliation(s)
- Xiao Shen
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Yiqiu Ruan
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Yuhui Zhao
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Qiang Ye
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Wenhan Huang
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Linglin He
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Qianwen He
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Wanru Cai
- The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou 310005, China.
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Karri U, Harasimowicz M, Carpio Tumba M, Schwartz DM. The Complexity of Being A20: From Biological Functions to Genetic Associations. J Clin Immunol 2024; 44:76. [PMID: 38451381 DOI: 10.1007/s10875-024-01681-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 02/27/2024] [Indexed: 03/08/2024]
Abstract
A20, encoded by TNFAIP3, is a critical negative regulator of immune activation. A20 is a ubiquitin editing enzyme with multiple domains, each of which mediates or stabilizes a key ubiquitin modification. A20 targets diverse proteins that are involved in pleiotropic immunologic pathways. The complexity of A20-mediated immunomodulation is illustrated by the varied effects of A20 deletion in different cell types and disease models. Clinically, the importance of A20 is highlighted by its extensive associations with human disease. A20 germline variants are associated with a wide range of inflammatory diseases, while somatic mutations promote development of B cell lymphomas. More recently, the discovery of A20 haploinsufficiency (HA20) has provided real world evidence for the role of A20 in immune cell function. Originally described as an autosomal dominant form of Behcet's disease, HA20 is now considered a complex inborn error of immunity with a broad spectrum of immunologic and clinical phenotypes.
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Affiliation(s)
- Urekha Karri
- Departments of Medicine and Immunology, Division of Rheumatology and Clinical Immunology, University of Pittsburgh, 200 Lothrop St., Pittsburgh, PA, 15213, USA
- Department of Human Genetics, University of Pittsburgh, Pittsburgh, PA, USA
| | - Magdalena Harasimowicz
- Departments of Medicine and Immunology, Division of Rheumatology and Clinical Immunology, University of Pittsburgh, 200 Lothrop St., Pittsburgh, PA, 15213, USA
| | - Manuel Carpio Tumba
- Departments of Medicine and Immunology, Division of Rheumatology and Clinical Immunology, University of Pittsburgh, 200 Lothrop St., Pittsburgh, PA, 15213, USA
| | - Daniella M Schwartz
- Departments of Medicine and Immunology, Division of Rheumatology and Clinical Immunology, University of Pittsburgh, 200 Lothrop St., Pittsburgh, PA, 15213, USA.
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Siegmund D, Zaitseva O, Wajant H. Fn14 and TNFR2 as regulators of cytotoxic TNFR1 signaling. Front Cell Dev Biol 2023; 11:1267837. [PMID: 38020877 PMCID: PMC10657838 DOI: 10.3389/fcell.2023.1267837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 10/24/2023] [Indexed: 12/01/2023] Open
Abstract
Tumor necrosis factor (TNF) receptor 1 (TNFR1), TNFR2 and fibroblast growth factor-inducible 14 (Fn14) belong to the TNF receptor superfamily (TNFRSF). From a structural point of view, TNFR1 is a prototypic death domain (DD)-containing receptor. In contrast to other prominent death receptors, such as CD95/Fas and the two TRAIL death receptors DR4 and DR5, however, liganded TNFR1 does not instruct the formation of a plasma membrane-associated death inducing signaling complex converting procaspase-8 into highly active mature heterotetrameric caspase-8 molecules. Instead, liganded TNFR1 recruits the DD-containing cytoplasmic signaling proteins TRADD and RIPK1 and empowers these proteins to trigger cell death signaling by cytosolic complexes after their release from the TNFR1 signaling complex. The activity and quality (apoptosis versus necroptosis) of TNF-induced cell death signaling is controlled by caspase-8, the caspase-8 regulatory FLIP proteins, TRAF2, RIPK1 and the RIPK1-ubiquitinating E3 ligases cIAP1 and cIAP2. TNFR2 and Fn14 efficiently recruit TRAF2 along with the TRAF2 binding partners cIAP1 and cIAP2 and can thereby limit the availability of these molecules for other TRAF2/cIAP1/2-utilizing proteins including TNFR1. Accordingly, at the cellular level engagement of TNFR2 or Fn14 inhibits TNFR1-induced RIPK1-mediated effects reaching from activation of the classical NFκB pathway to induction of apoptosis and necroptosis. In this review, we summarize the effects of TNFR2- and Fn14-mediated depletion of TRAF2 and the cIAP1/2 on TNFR1 signaling at the molecular level and discuss the consequences this has in vivo.
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Affiliation(s)
| | | | - Harald Wajant
- Division of Molecular Internal Medicine, Department of Internal Medicine II, University Hospital Würzburg, Würzburg, Germany
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4
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Yu Y, Li K, Xue R, Liu S, Liu X, Wu K. A20 functions as a negative regulator of the lipopolysaccharide-induced inflammation in corneal epithelial cells. Exp Eye Res 2023; 228:109392. [PMID: 36717050 DOI: 10.1016/j.exer.2023.109392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 12/01/2022] [Accepted: 01/25/2023] [Indexed: 01/28/2023]
Abstract
A20, also called TNFAIP3, is a crucial regulator of inflammation in various diseases but has not evidenced its function in the cornea. We aimed to evaluate the existence and the functions of A20 in human corneal epithelial (HCE-T) cells. After being treated with lipopolysaccharide (LPS) in different concentrations or at separate times, cells were collected to analyze A20 expressions. We then constructed the A20 knockdown system by siRNA and the A20 overexpressing system by lentivirus transduction. Systems were further exposed to medium with or without LPS for indicated times. Next, we evaluated the production of inflammatory cytokines (IL-6 and IL-8) by qRT-PCR and ELISA. Also, the translocation of P65 and the phosphorylation of P65, P38 and JNK were observed in two systems. In addition, we used the nuclear factor kappa-B (NF-κB) antagonist TPCA-1 for the pretreatment in cells and then detected the A20 expressions. We found a low basal expression of A20 in HCE-T cells, and the expressions could be dose-dependently induced by LPS, peaking at 4 h in protein level after stimulation. Both the A20 knockdown and A20 overexpressing systems were confirmed to be effective. After the LPS treatment, productions of IL-6 and IL-8 were enhanced in the A20 knockdown system and reduced in the A20 overexpressing system. A20 reduced the translocation of P65 into the nucleus and the phosphorylation of P65, P38 and JNK. Furthermore, TPCA-1 pretreatment reduced the expression of A20 in cells. We concluded that A20 is a potent regulator for corneal epithelium's reaction to inflammation, and it thus is expected to be a potential therapy target for ocular surface diseases.
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Affiliation(s)
- Yubin Yu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Kunke Li
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, China
| | - Ran Xue
- Department of Ophthalmology, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, China
| | - Sihao Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Xiuping Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Kaili Wu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China.
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Lu Y, Liu Y, Zheng M. The role and regulation of apoptosis signal-regulated kinase 1 in liver disease. Mol Biol Rep 2022; 49:10905-10914. [DOI: 10.1007/s11033-022-07783-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 07/06/2022] [Accepted: 07/07/2022] [Indexed: 10/15/2022]
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Crystallographic mining of ASK1 regulators to unravel the intricate PPI interfaces for the discovery of small molecule. Comput Struct Biotechnol J 2022; 20:3734-3754. [PMID: 35891784 PMCID: PMC9294202 DOI: 10.1016/j.csbj.2022.07.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 07/04/2022] [Accepted: 07/04/2022] [Indexed: 11/22/2022] Open
Abstract
Protein seldom performs biological activities in isolation. Understanding the protein–protein interactions’ physical rewiring in response to pathological conditions or pathogen infection can help advance our comprehension of disease etiology, progression, and pathogenesis, which allow us to explore the alternate route to control the regulation of key target interactions, timely and effectively. Nonalcoholic steatohepatitis (NASH) is now a global public health problem exacerbated due to the lack of appropriate treatments. The most advanced anti-NASH lead compound (selonsertib) is withdrawn, though it is able to inhibit its target Apoptosis signal-regulating kinase 1 (ASK1) completely, indicating the necessity to explore alternate routes rather than complete inhibition. Understanding the interaction fingerprints of endogenous regulators at the molecular level that underpin disease formation and progression may spur the rationale of designing therapeutic strategies. Based on our analysis and thorough literature survey of the various key regulators and PTMs, the current review emphasizes PPI-based drug discovery’s relevance for NASH conditions. The lack of structural detail (interface sites) of ASK1 and its regulators makes it challenging to characterize the PPI interfaces. This review summarizes key regulators interaction fingerprinting of ASK1, which can be explored further to restore the homeostasis from its hyperactive states for therapeutics intervention against NASH.
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Key Words
- ASK1
- ASK1, Apoptosis signal-regulating kinase 1
- CFLAR, CASP8 and FADD-like apoptosis regulator
- CREG, Cellular repressor of E1A-stimulated genes
- DKK3, Dickkopf-related protein 3
- Interaction fingerprint
- NAFLD, Non-alcoholic fatty liver disease
- NASH
- NASH, Nonalcoholic steatohepatitis
- PPI, Protein-protein interaction
- PTM, Post-trancriptional modification
- PTMs
- Protein-protein interaction
- TNFAIP3, TNF Alpha Induced Protein 3
- TRAF2/6, Tumor necrosis factor receptor (TNFR)-associated factor2/6
- TRIM48, Tripartite Motif Containing 48
- TRX, Thioredoxin
- USP9X, Ubiquitin Specific Peptidase 9 X-Linked
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Mathien S, Tesnière C, Meloche S. Regulation of Mitogen-Activated Protein Kinase Signaling Pathways by the Ubiquitin-Proteasome System and Its Pharmacological Potential. Pharmacol Rev 2021; 73:263-296. [PMID: 34732541 DOI: 10.1124/pharmrev.120.000170] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Mitogen-activated protein kinase (MAPK) cascades are evolutionarily conserved signaling pathways that play essential roles in transducing extracellular environmental signals into diverse cellular responses to maintain homeostasis. These pathways are classically organized into an architecture of three sequentially acting protein kinases: a MAPK kinase kinase that phosphorylates and activates a MAPK kinase, which in turn phosphorylates and activates the effector MAPK. The activity of MAPKs is tightly regulated by phosphorylation of their activation loop, which can be modulated by positive and negative feedback mechanisms to control the amplitude and duration of the signal. The signaling outcomes of MAPK pathways are further regulated by interactions of MAPKs with scaffolding and regulatory proteins. Accumulating evidence indicates that, in addition to these mechanisms, MAPK signaling is commonly regulated by ubiquitin-proteasome system (UPS)-mediated control of the stability and abundance of MAPK pathway components. Notably, the biologic activity of some MAPKs appears to be regulated mainly at the level of protein turnover. Recent studies have started to explore the potential of targeted protein degradation as a powerful strategy to investigate the biologic functions of individual MAPK pathway components and as a new therapeutic approach to overcome resistance to current small-molecule kinase inhibitors. Here, we comprehensively review the mechanisms, physiologic importance, and pharmacological potential of UPS-mediated protein degradation in the control of MAPK signaling. SIGNIFICANCE STATEMENT: Accumulating evidence highlights the importance of targeted protein degradation by the ubiquitin-proteasome system in regulating and fine-tuning the signaling output of mitogen-activated protein kinase (MAPK) pathways. Manipulating protein levels of MAPK cascade components may provide a novel approach for the development of selective pharmacological tools and therapeutics.
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Affiliation(s)
- Simon Mathien
- Institute for Research in Immunology and Cancer, Montreal, Quebec, Canada (S.Ma., C.T., S.Me.); and Molecular Biology Program, Faculty of Medicine (C.T., S.Me.) and Department of Pharmacology and Physiology (S.Me.), Université de Montréal, Montreal, Quebec, Canada
| | - Chloé Tesnière
- Institute for Research in Immunology and Cancer, Montreal, Quebec, Canada (S.Ma., C.T., S.Me.); and Molecular Biology Program, Faculty of Medicine (C.T., S.Me.) and Department of Pharmacology and Physiology (S.Me.), Université de Montréal, Montreal, Quebec, Canada
| | - Sylvain Meloche
- Institute for Research in Immunology and Cancer, Montreal, Quebec, Canada (S.Ma., C.T., S.Me.); and Molecular Biology Program, Faculty of Medicine (C.T., S.Me.) and Department of Pharmacology and Physiology (S.Me.), Université de Montréal, Montreal, Quebec, Canada
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Won M, Choi S, Cheon S, Kim EM, Kwon TK, Kim J, Kim YE, Sohn KC, Hur GM, Kim KK. Octyl syringate is preferentially cytotoxic to cancer cells via lysosomal membrane permeabilization and autophagic flux inhibition. Cell Biol Toxicol 2021; 39:183-199. [PMID: 34523043 DOI: 10.1007/s10565-021-09653-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Accepted: 09/03/2021] [Indexed: 10/20/2022]
Abstract
The autophagy-mediated lysosomal pathway plays an important role in conferring stress tolerance to tumor cells during cellular stress such as increased metabolic demands. Thus, targeted disruption of this function and inducing lysosomal cell death have been proved to be a useful cancer therapeutic approach. In this study, we reported that octyl syringate (OS), a novel phenolic derivate, was preferentially cytotoxic to various cancer cells but was significantly less cytotoxic to non-transformed cells. Treatment with OS resulted in non-apoptotic cell death in a caspase-independent manner. Notably, OS not only enhanced accumulation of autophagic substrates, including lapidated LC3 and sequestosome-1, but also inhibited their degradation via an autophagic flux. In addition, OS destabilized the lysosomal function, followed by the intracellular accumulation of the non-digestive autophagic substrates such as bovine serum albumin and stress granules. Furthermore, OS triggered the release of lysosomal enzymes into the cytoplasm that contributed to OS-induced non-apoptotic cell death. Finally, we demonstrated that OS was well tolerated and reduced tumor growth in mouse xenograft models. Taken together, our study identifies OS as a novel anticancer agent that induces lysosomal destabilization and subsequently inhibits autophagic flux and further supports development of OS as a lysosome-targeting compound in cancer therapy. • Octyl syringate, a phenolic derivate, is preferentially cytotoxic to various cancer cells. • Octyl syringate destabilizes the lysosomal function. • Octyl syringate blocks the autophagic flux. • Octyl syringate is a potential candidate compound for cancer therapy.
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Affiliation(s)
- Minho Won
- Department of Pharmacology, College of Medicine, Chungnam National University, 35015, Daejeon, Republic of Korea.,Biotechnology Process Engineering Center, Korea Research Institute of Bioscience & Biotechnology (KRIBB), Cheongju, 28116, Republic of Korea
| | - Sunkyung Choi
- Department of Biochemistry, College of Natural Sciences, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Seonghye Cheon
- Department of Biochemistry, College of Natural Sciences, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Eun-Mi Kim
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, 34114, Republic of Korea
| | - Taeg Kyu Kwon
- Department of Immunology, College of Medicine, Keimyung University, Daegu, 42601, Republic of Korea
| | - Jaewhan Kim
- Department of Biochemistry, College of Natural Sciences, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Yong-Eun Kim
- Department of Biochemistry, College of Natural Sciences, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Kyung-Cheol Sohn
- Department of Pharmacology, College of Medicine, Chungnam National University, 35015, Daejeon, Republic of Korea
| | - Gang Min Hur
- Department of Pharmacology, College of Medicine, Chungnam National University, 35015, Daejeon, Republic of Korea.
| | - Kee K Kim
- Department of Biochemistry, College of Natural Sciences, Chungnam National University, Daejeon, 34134, Republic of Korea.
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Wu Y, Ma R, Long C, Shu Y, He P, Zhou Y, Xiang Y, Wang Y. The protective effect of cannabinoid type II receptor agonist AM1241 on ConA-induced liver injury in mice via mitogen-activated protein kinase signalling pathway. Int J Immunopathol Pharmacol 2021; 35:20587384211035251. [PMID: 34384259 PMCID: PMC8366113 DOI: 10.1177/20587384211035251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Introduction The endocannabinoid system plays an important role in regulating the immune responses in inflammation. At present, there are no good clinical drugs for many immune liver diseases. Methods We explored the protective effect of the cannabinoid type II (CB2) receptor agonist AM1241 on the liver of mice with acute liver injury caused by concanavalin from the perspective of inflammation and immunity. Pathological evaluation in hepatic tissue was examined by haematoxylin and eosin (HE) staining and the levels of biochemical parameters in the serum were measured by automatic biochemical analysis. The content of inflammatory factors was measured by enzyme-linked immunosorbent assay and real-time quantitative reverse transcription polymerase chain reaction (real-time PCR). The liver apoptosis-related proteins were observed by immunohistochemistry. The expression of liver injury-related proteins was analysed by Western blot. Immune cells were isolated from the liver of mice and studied in vitro. Results Reduced levels of alanine transaminase and aspartate transaminase were observed in ConA-induced liver injury mice treated with AM1241, together with attenuated liver damage evidenced by H&E staining. Moreover, AM1241 inhibited the protein and gene expression levels of TNF-α, IL-6 and IFN-γ in the livers of mice. The phosphorylation levels of p38, JNK, ERK1/2, P65 and cAMP response element-binding protein (CREB) in the mouse were significantly reduced in AM1241 pretreatment, while the level of p-JNK increased. In addition, the P/T-P65 and P/T-CREB of the AM1241 pretreatment group were significantly reduced. The results of immunohistochemistry measurement are consistent with those of Western blotting. The CB2-mediated effect is through macrophage-like Kupffer cells. Conclusion Our study suggests that the ConA-induced liver injury model in mice is protected by CB2 agonist AM1241 by modulation of CB2 receptor-rich immune cells, for example, Kupffer cells. Reduced inflammatory responses regulate apoptosis/cell death in the liver particularly hepatocytes and other parenchymal cells.
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Affiliation(s)
- Yafeng Wu
- Department of Center for Clinical Laboratories, 74628The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province, China.,Department of School of Clinical Laboratory Science, Guizhou Medical University, Guiyang, Guizhou Province, China.,Department of Clinical Laboratory, The Fourth People's Hospital of Ya'an City, Ya'an, Sichuan Province, China
| | - Run Ma
- Department of Center for Clinical Laboratories, 74628The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Cuizhen Long
- Department of Center for Clinical Laboratories, 74628The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Yuanhui Shu
- Department of Center for Clinical Laboratories, 74628The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Ping He
- Department of Center for Clinical Laboratories, 74628The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Yan Zhou
- Department of Center for Clinical Laboratories, 74628The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Yining Xiang
- Department of Pathology, 74628The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Yuping Wang
- Department of Center for Clinical Laboratories, 74628The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province, China
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Çopuroğlu FE, Hapil FZ, Yoldaş ŞB, Özeş ON. Positive regulation of TNFR1 signaling via SH3 recognition motif. ACTA ACUST UNITED AC 2021; 45:171-179. [PMID: 33907493 PMCID: PMC8068768 DOI: 10.3906/biy-2010-28] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 02/01/2021] [Indexed: 12/03/2022]
Abstract
TNF is a pleiotropic cytokine and shows its biological function by binding to its receptors called TNFR1 and TNFR2. While TNFR1 induces apoptosis by activation of caspase-8 via the “death domain”, it also activates IKKα/β, MKK3/6, MKK4/7 by activation of TAK1. Although the TNFR1 signaling pathway is known by in large, it is not known how AKT and MAPKs p38, ERK1/2, and JNK1/2 are activated. The presence of a proline-rich PPAP region, (P448PAP451, a binding site for the SH3 domain-containing proteins) very close to the C-terminus promoted us to determine whether this region has any role in the TNFR1 signal transduction. To test this, the codons of P448 and P451 were changed to that of Alanin, GCG, via site-directed mutagenesis, and this plasmid was named as TNFR1-SH3-P/A. Subsequently, ectopically expressed the wild type TNFR1 and TNFR1-SH3-P/A in 293T cells and determined the levels of TNF-α-mediated phosphorylations of ERK, p38, JNK and AKT, NF-kB, and caspase-8 activation. While ectopic expression of our mutant diminished TNFα-mediated phosphorylations of p38, JNK, ERK and AKT, it increased NF-kB, and caspase-8 activations. In conclusion, TNFα-mediated ERK, AKT, JNK, p38 activations are affected by TNFR1 SH3 domain modifications.
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Affiliation(s)
- Fatma Ece Çopuroğlu
- Department of Medical Biology and Genetics, Institute of Health Sciences, Akdeniz University, Antalya Turkey2
| | - Fatma Zehra Hapil
- Department of Medical Biology and Genetics, Institute of Health Sciences, Akdeniz University, Antalya Turkey2
| | - Şükran Burçak Yoldaş
- Department of Medical Biology and Genetics, Institute of Health Sciences, Akdeniz University, Antalya Turkey2
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Iorga A, Donovan K, Shojaie L, Johnson H, Kwok J, Suda J, Lee BT, Aghajan M, Shao L, Liu ZX, Dara L. Interaction of RIPK1 and A20 modulates MAPK signaling in murine acetaminophen toxicity. J Biol Chem 2021; 296:100300. [PMID: 33460648 PMCID: PMC7948960 DOI: 10.1016/j.jbc.2021.100300] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 01/04/2021] [Accepted: 01/11/2021] [Indexed: 12/13/2022] Open
Abstract
Acetaminophen (APAP)-induced liver necrosis is a form of regulated cell death (RCD) in which APAP activates the mitogen-activated protein kinases (MAPKs) and specifically the c-Jun-N-terminal kinase (JNK) pathway, leading to necrotic cell death. Previously, we have shown that receptor interacting protein kinase-1 (RIPK1) knockdown is also protective against APAP RCD upstream of JNK. However, whether the kinase or platform function of RIPK1 is involved in APAP RCD is not known. To answer this question, we used genetic mouse models of targeted hepatocyte RIPK1 knockout (RIPK1HepCKO) or kinase dead knock-in (RIPK1D138N) and adult hepatocyte specific knockout of the cytoprotective protein A20 (A20HepCKO), known to interact with RIPK1, to study its potential involvement in MAPK signaling. We observed no difference in injury between WT and RIPK1D138N mice post APAP. However, RIPK1HepCKO was protective. We found that RIPK1HepCKO mice had attenuated pJNK activation, while A20 was simultaneously upregulated. Conversely, A20HepCKO markedly worsened liver injury from APAP. Mechanistically, we observed a significant upregulation of apoptosis signal-regulating kinase 1 (ASK1) and increased JNK activation in A20HepCKO mice compared with littermate controls. We also demonstrated that A20 coimmunoprecipitated (co-IP) with both RIPK1 and ASK1, and that in the presence of RIPK1, there was less A20-ASK1 association than in its absence. We conclude that the kinase-independent platform function of RIPK1 is involved in APAP toxicity. Adult RIPK1HepCKO mice are protected against APAP by upregulating A20 and attenuating JNK signaling through ASK1, conversely, A20HepCKO worsens injury from APAP.
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Affiliation(s)
- Andrea Iorga
- Division of Gastrointestinal and Liver Diseases, Department of Medicine, Keck School of Medicine of University of Southern California, Los Angeles, California, USA; USC Research Center for Liver Disease, Keck School of Medicine of University of Southern California, Los Angeles, California, USA
| | - Katherine Donovan
- USC Research Center for Liver Disease, Keck School of Medicine of University of Southern California, Los Angeles, California, USA
| | - Layla Shojaie
- USC Research Center for Liver Disease, Keck School of Medicine of University of Southern California, Los Angeles, California, USA
| | - Heather Johnson
- Division of Gastrointestinal and Liver Diseases, Department of Medicine, Keck School of Medicine of University of Southern California, Los Angeles, California, USA; USC Research Center for Liver Disease, Keck School of Medicine of University of Southern California, Los Angeles, California, USA
| | - Janet Kwok
- Division of Gastrointestinal and Liver Diseases, Department of Medicine, Keck School of Medicine of University of Southern California, Los Angeles, California, USA
| | - Jo Suda
- USC Research Center for Liver Disease, Keck School of Medicine of University of Southern California, Los Angeles, California, USA; Cedar Sinai Medical Center, Los Angeles, California, USA
| | - Brian T Lee
- Division of Gastrointestinal and Liver Diseases, Department of Medicine, Keck School of Medicine of University of Southern California, Los Angeles, California, USA
| | | | - Ling Shao
- Division of Gastrointestinal and Liver Diseases, Department of Medicine, Keck School of Medicine of University of Southern California, Los Angeles, California, USA; USC Research Center for Liver Disease, Keck School of Medicine of University of Southern California, Los Angeles, California, USA
| | - Zhang-Xu Liu
- Division of Gastrointestinal and Liver Diseases, Department of Medicine, Keck School of Medicine of University of Southern California, Los Angeles, California, USA; USC Research Center for Liver Disease, Keck School of Medicine of University of Southern California, Los Angeles, California, USA
| | - Lily Dara
- Division of Gastrointestinal and Liver Diseases, Department of Medicine, Keck School of Medicine of University of Southern California, Los Angeles, California, USA; USC Research Center for Liver Disease, Keck School of Medicine of University of Southern California, Los Angeles, California, USA.
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12
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Razani B, Malynn BA, Ma A. Preserving immune homeostasis with A20. Adv Immunol 2020; 148:1-48. [PMID: 33190732 DOI: 10.1016/bs.ai.2020.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
A20/TNFAIP3 is a TNF induced gene that plays a profound role in preserving cellular and organismal homeostasis (Lee, et al., 2000; Opipari etal., 1990). This protein has been linked to multiple human diseases via genetic, epigenetic, and an emerging series of patients with mono-allelic coding mutations. Diverse cellular functions of this pleiotropically expressed protein include immune-suppressive, anti-inflammatory, and cell protective functions. The A20 protein regulates ubiquitin dependent cell signals; however, the biochemical mechanisms by which it performs these functions is surprisingly complex. Deciphering these cellular and biochemical facets of A20 dependent biology should greatly improve our understanding of murine and human disease pathophysiology as well as unveil new mechanisms of cell and tissue biology.
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Affiliation(s)
- Bahram Razani
- Department of Dermatology, University of California, San Francisco, CA, United States
| | - Barbara A Malynn
- Department of Medicine, University of California, San Francisco, San Francisco, CA, United States
| | - Averil Ma
- Department of Medicine, University of California, San Francisco, San Francisco, CA, United States.
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13
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Brys R, Gibson K, Poljak T, Van Der Plas S, Amantini D. Discovery and development of ASK1 inhibitors. PROGRESS IN MEDICINAL CHEMISTRY 2020; 59:101-179. [PMID: 32362327 DOI: 10.1016/bs.pmch.2020.02.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Aberrant activation of mitogen-activated protein kinases (MAPKs) like c-Jun N-terminal kinase (JNK) and p38 is an event involved in the pathophysiology of numerous human diseases. The apoptosis signal-regulating kinase 1 (ASK1) is an upstream target that gets activated only under pathological conditions and as such is a promising target for therapeutic intervention. In the first part of this review the molecular mechanisms leading to ASK1 activation and regulation will be described as well as the evidences supporting a pathogenic role for ASK1 in human disease. In the second part, an update on drug discovery efforts towards the discovery and development of ASK1-targeting therapies will be provided.
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Affiliation(s)
| | - Karl Gibson
- Sandexis Medicinal Chemistry Ltd, Innovation House Discovery ParkSandwich, Kent, United Kingdom
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14
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Yang Y, Zhao Y, Li W, Wu Y, Wang X, Wang Y, Liu T, Ye T, Xie Y, Cheng Z, He J, Bai P, Zhang Y, Ouyang L. Emerging targets and potential therapeutic agents in non-alcoholic fatty liver disease treatment. Eur J Med Chem 2020; 197:112311. [PMID: 32339855 DOI: 10.1016/j.ejmech.2020.112311] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 03/29/2020] [Accepted: 04/04/2020] [Indexed: 02/08/2023]
Abstract
Nonalcoholic Fatty Liver Disease (NAFLD) is the most common chronic liver disease in the world, which is characterized by liver fat accumulation unrelated to excessive drinking. Indeed, it attracts growing attention and becomes a global health problem. Due to the complexity of the NAFLD pathogenic mechanism, no related drugs were approved by Food and Drug Administration (FDA) till now. However, it is encouraging that a series of candidate drugs have entered the clinical trial stage with expectation to treat NAFLD. In this review, we summarized the main pathways and pathogenic mechanisms of NAFLD, as well as introduced the main potential therapeutic targets and the corresponding compounds involved in metabolism, inflammation and fibrosis. Furthermore, we also discuss the progress of these compounds, such as drug design and optimization, the choice of pharmacological properties and druglikeness, and the analysis of structure-activity relationship. This review offers a medium on future drug design and development, to be beneficial to relevant studies.
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Affiliation(s)
- Yu Yang
- State Key Laboratory of Biotherapy & Cancer Center, West China Hospital, Sichuan University, Collaborative Innovation Center of Biotherapy, Chengdu, 610041, China
| | - Yu Zhao
- Department of Integrated Traditional Chinese and Western Medicine, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Wenzhen Li
- State Key Laboratory of Biotherapy & Cancer Center, West China Hospital, Sichuan University, Collaborative Innovation Center of Biotherapy, Chengdu, 610041, China
| | - Yuyao Wu
- West China School of Public Health/No.4 West China Teaching Hospital, Sichuan University, Chengdu, 610041, China
| | - Xin Wang
- State Key Laboratory of Biotherapy & Cancer Center, West China Hospital, Sichuan University, Collaborative Innovation Center of Biotherapy, Chengdu, 610041, China
| | - Yijie Wang
- State Key Laboratory of Biotherapy & Cancer Center, West China Hospital, Sichuan University, Collaborative Innovation Center of Biotherapy, Chengdu, 610041, China
| | - Tingmei Liu
- State Key Laboratory of Biotherapy & Cancer Center, West China Hospital, Sichuan University, Collaborative Innovation Center of Biotherapy, Chengdu, 610041, China
| | - Tinghong Ye
- State Key Laboratory of Biotherapy & Cancer Center, West China Hospital, Sichuan University, Collaborative Innovation Center of Biotherapy, Chengdu, 610041, China
| | - Yongmei Xie
- State Key Laboratory of Biotherapy & Cancer Center, West China Hospital, Sichuan University, Collaborative Innovation Center of Biotherapy, Chengdu, 610041, China
| | - Zhiqiang Cheng
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Jun He
- State Key Laboratory of Biotherapy & Cancer Center, West China Hospital, Sichuan University, Collaborative Innovation Center of Biotherapy, Chengdu, 610041, China.
| | - Peng Bai
- Department of Forensic Genetics, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, 610041, China.
| | - Yiwen Zhang
- State Key Laboratory of Biotherapy & Cancer Center, West China Hospital, Sichuan University, Collaborative Innovation Center of Biotherapy, Chengdu, 610041, China.
| | - Liang Ouyang
- State Key Laboratory of Biotherapy & Cancer Center, West China Hospital, Sichuan University, Collaborative Innovation Center of Biotherapy, Chengdu, 610041, China
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15
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Transcriptional analysis of scar-free wound healing during early stages of tail regeneration in the green anole lizard, Anolis carolinensis. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.regen.2019.100025] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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16
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Martens A, van Loo G. A20 at the Crossroads of Cell Death, Inflammation, and Autoimmunity. Cold Spring Harb Perspect Biol 2020; 12:cshperspect.a036418. [PMID: 31427375 DOI: 10.1101/cshperspect.a036418] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A20 is a potent anti-inflammatory protein, acting by inhibiting nuclear factor κB (NF-κB) signaling and inflammatory gene expression and/or by preventing cell death. Mutations in the A20/TNFAIP3 gene have been associated with a plethora of inflammatory and autoimmune pathologies in humans and in mice. Although the anti-inflammatory role of A20 is well accepted, fundamental mechanistic questions regarding its mode of action remain unclear. Here, we review new findings that further clarify the molecular and cellular mechanisms by which A20 controls inflammatory signaling and cell death, and discuss new evidence for its involvement in inflammatory and autoimmune disease development.
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Affiliation(s)
- Arne Martens
- VIB Center for Inflammation Research, 9052 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - Geert van Loo
- VIB Center for Inflammation Research, 9052 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
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17
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Lee SR, Quan KT, Byun HS, Park I, Kang K, Piao X, Ju E, Ro H, Na M, Hur GM. Accelerated degradation of cFLIP L and sensitization of the TRAIL DISC-mediated apoptotic cascade by pinoresinol, a lignan isolated from Rubia philippinensis. Sci Rep 2019; 9:13505. [PMID: 31534206 PMCID: PMC6751165 DOI: 10.1038/s41598-019-49909-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 08/29/2019] [Indexed: 02/08/2023] Open
Abstract
Plant-derived lignans have numerous biological effects including anti-tumor and anti-inflammatory activities. Screening of purified constituents of Rubia philippinensis from human glioblastoma cells resistant to TNF-related apoptosis-inducing ligand (TRAIL) has suggested that the lignan pinoresinol was a highly active TRAIL sensitizer. Here we show that treatment with nontoxic doses of pinoresinol in combination with TRAIL induced rapid apoptosis and caspase activation in many types of glioblastoma cells, but not in normal astrocytes. Analyses of apoptotic signaling events revealed that pinoresinol enhanced the formation of TRAIL-mediated death-inducing signaling complex (DISC) and complete processing of procaspase-8 within the DISC in glioblastoma cells, in which caspase-8 was inactivated. Mechanistically, pinoresinol downregulated the expression of cellular FLICE-inhibitory protein (cFLIPL) and survivin through proteasome-mediated degradation, without affecting death receptors or downstream intracellular apoptosis-related proteins. Furthermore, the sensitization of TRAIL-mediated apoptosis by pinoresinol strictly depended on the expression level of cFLIPL, which was regulated through de novo protein synthesis, rather than by NF-κB or p53 signaling. Taken together, our results indicate that pinoresinol facilitates DISC-mediated caspase-8 activation by targeting cFLIPL in an early event in apoptotic signaling, which provides a potential therapeutic module for TRAIL-based chemotherapy.
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Affiliation(s)
- So-Ra Lee
- Department of Pharmacology and Department of Medical Science, College of Medicine, Chungnam National University, 266 Munhwa-ro, Daejeon, 35015, Republic of Korea
| | - Khong Trong Quan
- College of Pharmacy, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Hee Sun Byun
- Department of Pharmacology and Department of Medical Science, College of Medicine, Chungnam National University, 266 Munhwa-ro, Daejeon, 35015, Republic of Korea
| | - InWha Park
- College of Pharmacy, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Kidong Kang
- Department of Pharmacology and Department of Medical Science, College of Medicine, Chungnam National University, 266 Munhwa-ro, Daejeon, 35015, Republic of Korea
| | - Xuezhe Piao
- Department of Pharmacology and Department of Medical Science, College of Medicine, Chungnam National University, 266 Munhwa-ro, Daejeon, 35015, Republic of Korea
| | - Eunjin Ju
- Department of Pharmacology and Department of Medical Science, College of Medicine, Chungnam National University, 266 Munhwa-ro, Daejeon, 35015, Republic of Korea
| | - Hyunju Ro
- Department of Biological Sciences, College of Biosciences and Biotechnology, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - MinKyun Na
- College of Pharmacy, Chungnam National University, Daejeon, 34134, Republic of Korea.
| | - Gang Min Hur
- Department of Pharmacology and Department of Medical Science, College of Medicine, Chungnam National University, 266 Munhwa-ro, Daejeon, 35015, Republic of Korea.
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18
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Autophagy genes in myeloid cells counteract IFNγ-induced TNF-mediated cell death and fatal TNF-induced shock. Proc Natl Acad Sci U S A 2019; 116:16497-16506. [PMID: 31346084 DOI: 10.1073/pnas.1822157116] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Host inflammatory responses must be tightly regulated to ensure effective immunity while limiting tissue injury. IFN gamma (IFNγ) primes macrophages to mount robust inflammatory responses. However, IFNγ also induces cell death, and the pathways that regulate IFNγ-induced cell death are incompletely understood. Using genome-wide CRISPR/Cas9 screening, we identified autophagy genes as central mediators of myeloid cell survival during the IFNγ response. Hypersensitivity of autophagy gene-deficient cells to IFNγ was mediated by tumor necrosis factor (TNF) signaling via receptor interacting protein kinase 1 (RIPK1)- and caspase 8-mediated cell death. Mice with myeloid cell-specific autophagy gene deficiency exhibited marked hypersensitivity to fatal systemic TNF administration. This increased mortality in myeloid autophagy gene-deficient mice required the IFNγ receptor, and mortality was completely reversed by pharmacologic inhibition of RIPK1 kinase activity. These findings provide insight into the mechanism of IFNγ-induced cell death via TNF, demonstrate a critical function of autophagy genes in promoting cell viability in the presence of inflammatory cytokines, and implicate this cell survival function in protection against mortality during the systemic inflammatory response.
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19
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Sánchez-Martín D, Otsuka A, Kabashima K, Ha T, Wang D, Qian X, Lowy DR, Tosato G. Effects of DLC1 Deficiency on Endothelial Cell Contact Growth Inhibition and Angiosarcoma Progression. J Natl Cancer Inst 2019; 110:390-399. [PMID: 29202196 DOI: 10.1093/jnci/djx219] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 09/18/2017] [Indexed: 01/04/2023] Open
Abstract
Background Deleted in Liver Cancer 1 (DLC1) is a tumor suppressor gene frequently deleted in cancer. However, DLC1 is not known to be deleted in angiosarcoma, an aggressive malignancy of endothelial cell derivation. Additionally, the physiologic functions of DLC1 protein in endothelial cells are poorly defined. Methods We investigated the effects of shRNA-induced DLC1 depletion in endothelial cells. Cell growth was measured by 3H thymidine incorporation, IncuCyte imaging, and population doublings; cell death by cell cycle analysis; gene expression by Affimetrix arrays and quantitative polymerase chain reaction; NF-κB activity by reporter assays; and protein levels by immunoblotting and immunofluorescence staining. We tested Tanespimycin/17-AAG and Fasudil treatment in groups of nine to 10 mice bearing ISOS-1 angiosarcoma. All statistical tests were two-sided. Results We discovered that DLC1 is a critical regulator of cell contact inhibition of proliferation in endothelial cells, promoting statistically significant (P < .001) cell death when cells are confluent (mean [SD] % viability: control DLC1 = 15.6 [19.3]; shDLC1 = 73.4 [13.1]). This prosurvival phenotype of DLC1-depleted confluent endothelial cells is attributable to a statistically significant and sustained increase of NF-κB activity (day 5, P = .001; day 8, P = .03) associated with increased tumor necrosis factor alpha-induced protein 3 (TNFAIP3/A20) signaling. Consistently, we found that DLC1 is statistically significantly reduced (P < .001 in 5 of 6) and TNFAIP3/A20 is statistically significantly increased (P < .001 in 2 of 3 and P = 0.02 in 1 of 3) in human angiosarcoma compared with normal adjacent endothelium. Treatment with the NF-κB inhibitor Tanespimycin/17-AAG statistically significantly reduced angiosarcoma tumor growth in mice (treatment tumor weight vs control, 0.50 [0.19] g vs 0.91 [0.21] g, P = .001 experiment 1; 0.66 [0.26] g vs 1.10 [0.31] g, P = .01 experiment 2). Conclusions These results identify DLC1 as a previously unrecognized regulator of endothelial cell contact inhibition of proliferation that is depleted in angiosarcoma and support NF-κB targeting for the treatment of angiosarcoma where DLC1 is lost.
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Affiliation(s)
- David Sánchez-Martín
- Laboratory of Cellular Oncology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Atsushi Otsuka
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Kenji Kabashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Taekyu Ha
- Laboratory of Cellular Oncology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Dunrui Wang
- Laboratory of Cellular Oncology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Xiaolan Qian
- Laboratory of Cellular Oncology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Douglas R Lowy
- Laboratory of Cellular Oncology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Giovanna Tosato
- Laboratory of Cellular Oncology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD
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20
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Yan C, Huang WY, Boudreau J, Mayavannan A, Cheng Z, Wang J. IL-17R deletion predicts high-grade colorectal cancer and poor clinical outcomes. Int J Cancer 2019; 145:548-558. [PMID: 30628053 DOI: 10.1002/ijc.32122] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 12/10/2018] [Accepted: 12/20/2018] [Indexed: 01/07/2023]
Abstract
The IL-17 receptor (IL-17R) has a perplexing role in cancer, which may be explained by its yin-yang signaling pathways. Recently, the critical role of IL-17R in maintaining basal levels of A20-a key negative regulator of NF-κB and JNK-c-Jun pathways has been demonstrated in cancer cell lines. Cross-cancer analyses of somatic copy number alterations in IL-17RA, IL-17RC and A20 genes reveal that IL-17RA-deletion is common in colorectal cancer (CRC) patients, representing 24, 26, 37 and 49% of stage I, II, III and IV of patients, respectively, and mutually exclusive with patients displaying microsatellite instability. Importantly, patients with IL-17R-deletion or concurrent deletions of A20 show significantly reduced overall survival. Analysis of multiple published microarray studies confirms that IL-17RA expression is significantly reduced in CRC samples compared to normal counterparts, and its level is closely associated with A20 expression. Analyses of RNAseq data indicate that tumors with IL-17R-deletion express strong molecular markers of tumor invasion, growth and metastasis. Notably, approximately 20 genes responsible for protein synthesis and mitochondrial metabolism are inversely correlated with both IL-17RA and A20. Immunohistochemistry staining in human colorectal tissue arrays further reveals that high-grade tumors have significantly reduced IL-17RA staining compared to low-grade tumors. Thus, collective evidence strongly supports a previously unrecognized CRC-promoting mechanism triggered by IL-17RA-deletion and highlights its utility as a prognostic marker in CRC.
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Affiliation(s)
- Chi Yan
- Beatrice Hunter Cancer Research Institute, Halifax, Nova Scotia, Canada.,Department of Microbiology & Immunology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.,Canadian Center for Vaccinology, IWK Health Centre, Halifax, Nova Scotia, Canada
| | - Weei-Yuan Huang
- Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Jeanette Boudreau
- Beatrice Hunter Cancer Research Institute, Halifax, Nova Scotia, Canada.,Department of Microbiology & Immunology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.,Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Animamalar Mayavannan
- Department of Microbiology & Immunology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.,Canadian Center for Vaccinology, IWK Health Centre, Halifax, Nova Scotia, Canada
| | - Zhenyu Cheng
- Beatrice Hunter Cancer Research Institute, Halifax, Nova Scotia, Canada.,Department of Microbiology & Immunology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.,Canadian Center for Vaccinology, IWK Health Centre, Halifax, Nova Scotia, Canada
| | - Jun Wang
- Beatrice Hunter Cancer Research Institute, Halifax, Nova Scotia, Canada.,Department of Microbiology & Immunology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.,Canadian Center for Vaccinology, IWK Health Centre, Halifax, Nova Scotia, Canada
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21
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Post-translational modification of the death receptor complex as a potential therapeutic target in cancer. Arch Pharm Res 2019; 42:76-87. [PMID: 30610617 DOI: 10.1007/s12272-018-01107-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 12/27/2018] [Indexed: 12/26/2022]
Abstract
Programmed cell death is critical to the physiological function of multi-cellular organisms, controlling development, immunity, inflammation, and cancer progression. Death receptor (DR)-mediated regulation of a protease functions as a second messenger to initiate a death signal cascade to induce apoptosis or necroptosis. Recently, it has become clear that post-translational modifications (PTMs) of signaling components in the DR complex are highly complex, temporally controlled, and tightly regulated, and play an important role in cell death signaling. This review focuses on the molecular mechanisms and pathophysiological consequences of PTMs on the formation of the DR signaling complex, especially with respect to tumor necrosis factor receptor 1 (TNFR1). Furthermore, characterization of the role of PTMs in spatially different TNFR1 complexes (complexes I and II), especially with respect to the role of ubiquitination and phosphorylation of receptor interacting protein 1 (RIP1) in programmed cell death in cancer cells, will be reviewed. By integrating recently gained insight of the functional importance of PTMs in complex I or II, this review discusses how the concerted action of PTMs results in life or death upon DR ligation. Finally, the emerging concept of a sequential cell death checkpoint by the PTMs of RIP1, which may reveal novel therapeutic opportunities for the treatment of some cancers, will be discussed.
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22
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Win S, Than TA, Kaplowitz N. The Regulation of JNK Signaling Pathways in Cell Death through the Interplay with Mitochondrial SAB and Upstream Post-Translational Effects. Int J Mol Sci 2018; 19:ijms19113657. [PMID: 30463289 PMCID: PMC6274687 DOI: 10.3390/ijms19113657] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 11/17/2018] [Accepted: 11/17/2018] [Indexed: 02/08/2023] Open
Abstract
c-Jun-N-terminal kinase (JNK) activity plays a critical role in modulating cell death, which depends on the level and duration of JNK activation. The kinase cascade from MAPkinase kinase kinase (MAP3K) to MAPkinase kinase (MAP2K) to MAPKinase (MAPK) can be regulated by a number of direct and indirect post-transcriptional modifications, including acetylation, ubiquitination, phosphorylation, and their reversals. Recently, a JNK-mitochondrial SH3-domain binding protein 5 (SH3BP5/SAB)-ROS activation loop has been elucidated, which is required to sustain JNK activity. Importantly, the level of SAB expression in the outer membrane of mitochondria is a major determinant of the set-point for sustained JNK activation. SAB is a docking protein and substrate for JNK, leading to an intramitochondrial signal transduction pathway, which impairs electron transport and promotes reactive oxygen species (ROS) release to sustain the MAPK cascade.
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Affiliation(s)
- Sanda Win
- Division of Gastrointestinal and Liver Disease, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA.
| | - Tin Aung Than
- Division of Gastrointestinal and Liver Disease, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA.
| | - Neil Kaplowitz
- Division of Gastrointestinal and Liver Disease, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA.
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23
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Seo J, Kim MW, Bae KH, Lee SC, Song J, Lee EW. The roles of ubiquitination in extrinsic cell death pathways and its implications for therapeutics. Biochem Pharmacol 2018; 162:21-40. [PMID: 30452908 DOI: 10.1016/j.bcp.2018.11.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 11/14/2018] [Indexed: 01/24/2023]
Abstract
Regulation of cell survival and death, including apoptosis and necroptosis, is important for normal development and tissue homeostasis, and disruption of these processes can cause cancer, inflammatory diseases, and degenerative diseases. Ubiquitination is a cellular process that induces proteasomal degradation by covalently attaching ubiquitin to the substrate protein. In addition to proteolytic ubiquitination, nonproteolytic ubiquitination, such as M1-linked and K63-linked ubiquitination, has been shown to be important in recent studies, which have demonstrated its function in cell signaling pathways that regulate inflammation and cell death pathways. In this review, we summarize the TRAIL- and TNF-induced death receptor signaling pathways along with recent advances in this field and illustrate how different types of ubiquitination control cell death and survival. In particular, we provide an overview of the different types of ubiquitination, target residues, and modifying enzymes, including E3 ligases and deubiquitinating enzymes. Given the relevance of these regulatory pathways in human disease, we hope that a better understanding of the regulatory mechanisms of cell death pathways will provide insights into and therapeutic strategies for related diseases.
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Affiliation(s)
- Jinho Seo
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 120-749, Republic of Korea
| | - Min Wook Kim
- Metabolic Regulation Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon 34141, Republic of Korea
| | - Kwang-Hee Bae
- Metabolic Regulation Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon 34141, Republic of Korea
| | - Sang Chul Lee
- Metabolic Regulation Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon 34141, Republic of Korea
| | - Jaewhan Song
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 120-749, Republic of Korea
| | - Eun-Woo Lee
- Metabolic Regulation Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea.
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24
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Prinz E, Aviram S, Aronheim A. WDR62 mediates TNFα-dependent JNK activation via TRAF2-MLK3 axis. Mol Biol Cell 2018; 29:2470-2480. [PMID: 30091641 PMCID: PMC6233063 DOI: 10.1091/mbc.e17-08-0504] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 08/01/2018] [Accepted: 08/02/2018] [Indexed: 11/11/2022] Open
Abstract
The mitogen-activated protein kinases (MAPKs) regulate a variety of cellular processes. The three main MAPK cascades are the extracellular signal-regulated kinases (ERK), c-Jun N-terminal kinase (JNK), and p38 kinases. A typical MAPK cascade is composed of MAP3K-MAP2K-MAPK kinases that are held by scaffold proteins. Scaffolds function to assemble the protein tier and contribute to the specificity and efficacy of signal transmission. WD repeat domain 62 (WDR62) is a JNK scaffold protein, interacting with JNK, MKK7, and several MAP3Ks. The loss of WDR62 in human leads to microcephaly and pachygyria. Yet the role of WDR62 in cellular function is not fully studied. We used the CRISPR/Cas9 and short hairpin RNA approaches to establish a human breast cancer cell line MDA-MB-231 with WDR62 loss of function and studied the consequence to JNK signaling. In growing cells, WDR62 is responsible for the basal expression of c-Jun. In stressed cells, WDR62 specifically mediates TNFα-dependent JNK activation through the association with both the adaptor protein, TNF receptor-associated factor 2 (TRAF2), and the MAP3K protein, mixed lineage kinase 3. TNFα-dependent JNK activation is mediated by WDR62 in HCT116 and HeLa cell lines as well. MDA-MB-231 WDR62-knockout cells display increased resistance to TNFα-induced cell death. Collectively, WDR62 coordinates the TNFα receptor signaling pathway to JNK activation through association with multiple kinases and the adaptor protein TRAF2.
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Affiliation(s)
- Elad Prinz
- Department of Cell Biology and Cancer Science, B. Rappaport Faculty of Medicine, Technion—Israel Institute of Technology, Haifa 31096, Israel
| | - Sharon Aviram
- Department of Cell Biology and Cancer Science, B. Rappaport Faculty of Medicine, Technion—Israel Institute of Technology, Haifa 31096, Israel
| | - Ami Aronheim
- Department of Cell Biology and Cancer Science, B. Rappaport Faculty of Medicine, Technion—Israel Institute of Technology, Haifa 31096, Israel
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25
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β-TrCP-dependent degradation of ASK1 suppresses the induction of the apoptotic response by oxidative stress. Biochim Biophys Acta Gen Subj 2018; 1862:2271-2280. [DOI: 10.1016/j.bbagen.2018.07.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 07/13/2018] [Accepted: 07/16/2018] [Indexed: 12/26/2022]
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26
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Van Quickelberghe E, Martens A, Goeminne LJE, Clement L, van Loo G, Gevaert K. Identification of Immune-Responsive Gene 1 (IRG1) as a Target of A20. J Proteome Res 2018; 17:2182-2191. [DOI: 10.1021/acs.jproteome.8b00139] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
| | - Arne Martens
- VIB-UGent Center
for Inflammation Research, B-9052 Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, B-9052 Ghent, Belgium
| | | | | | - Geert van Loo
- VIB-UGent Center
for Inflammation Research, B-9052 Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, B-9052 Ghent, Belgium
| | - Kris Gevaert
- VIB-UGent Center
for Medical Biotechnology, B-9000 Ghent, Belgium
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27
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Yan C, Lei Y, Lin TJ, Hoskin DW, Ma A, Wang J. IL-17RC is critically required to maintain baseline A20 production to repress JNK isoform-dependent tumor-specific proliferation. Oncotarget 2018; 8:43153-43168. [PMID: 28562353 PMCID: PMC5522135 DOI: 10.18632/oncotarget.17820] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Accepted: 04/17/2017] [Indexed: 01/13/2023] Open
Abstract
The IL-17/IL-17R axis has controversial roles in cancer, which may be explained by tumor-specific results. Here, we describe a novel molecular mechanism underlying IL-17RC-controlled tumor-specific proliferation. Triggered by IL-17RC knockdown (KD), B16 melanoma and 4T1 carcinoma cells inversely altered homeostatic tumor proliferation and tumor growth in vitro and in vivo. In contrast to the existing dogma that IL-17RC-dependent signaling activates the JNK pathway, IL-17RC KD in both tumor cell lines caused aberrant expression and activation of different JNK isoforms along with markedly diminished levels of the ubiquitin-editing enzyme A20. We demonstrated that differential up-regulation of JNK1 and JNK2 in the two tumor cell lines was responsible for the reciprocal regulation of c-Jun activity and tumor-specific proliferation. Furthermore, we showed that A20 reconstitution of IL-17RCKD clones with expression of full-length A20, but not a truncation-mutant, reversed aberrant JNK1/JNK2 activities and tumor-specific proliferation. Collectively, our study reveals a critical role of IL-17RC in maintaining baseline A20 production and a novel role of the IL-17RC-A20 axis in controlling JNK isoform-dependent tumor-specific homeostatic proliferation.
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Affiliation(s)
- Chi Yan
- Canadian Center for Vaccinology, Halifax, Nova Scotia, Canada.,Department of Microbiology and Immunology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Yang Lei
- Canadian Center for Vaccinology, Halifax, Nova Scotia, Canada.,Department of Microbiology and Immunology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Tong-Jun Lin
- Department of Microbiology and Immunology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.,Department of Pediatrics, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.,IWK Health Centre, Halifax, Nova Scotia, Canada
| | - David W Hoskin
- Department of Microbiology and Immunology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.,Department of Pathology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Averil Ma
- Department of Medicine, University of California, San Francisco, California, USA
| | - Jun Wang
- Canadian Center for Vaccinology, Halifax, Nova Scotia, Canada.,Department of Microbiology and Immunology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.,Department of Pediatrics, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.,IWK Health Centre, Halifax, Nova Scotia, Canada
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28
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Gehrke N, Nagel M, Straub BK, Wörns MA, Schuchmann M, Galle PR, Schattenberg JM. Loss of cellular FLICE-inhibitory protein promotes acute cholestatic liver injury and inflammation from bile duct ligation. Am J Physiol Gastrointest Liver Physiol 2018; 314:G319-G333. [PMID: 29191940 DOI: 10.1152/ajpgi.00097.2017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Cholestatic liver injury results from impaired bile flow or metabolism and promotes hepatic inflammation and fibrogenesis. Toxic bile acids that accumulate in cholestasis induce apoptosis and contribute to early cholestatic liver injury, which is amplified by accompanying inflammation. The aim of the current study was to evaluate the role of the antiapoptotic caspase 8-homolog cellular FLICE-inhibitory (cFLIP) protein during acute cholestatic liver injury. Transgenic mice exhibiting hepatocyte-specific deletion of cFLIP (cFLIP-/-) were used for in vivo and in vitro analysis of cholestatic liver injury using bile duct ligation (BDL) and the addition of bile acids ex vivo. Loss of cFLIP in hepatocytes promoted acute cholestatic liver injury early after BDL, which was characterized by a rapid release of proinflammatory and chemotactic cytokines (TNF, IL-6, IL-1β, CCL2, CXCL1, and CXCL2), an increased presence of CD68+ macrophages and an influx of neutrophils in the liver, and resulting apoptotic and necrotic hepatocyte cell death. Mechanistically, liver injury in cFLIP-/- mice was aggravated by reactive oxygen species, and sustained activation of the JNK signaling pathway. In parallel, cytoprotective NF-κB p65, A20, and the MAPK p38 were inhibited. Increased injury in cFLIP-/- mice was accompanied by activation of hepatic stellate cells and profibrogenic regulators. The antagonistic caspase 8-homolog cFLIP is a critical regulator of acute, cholestatic liver injury. NEW & NOTEWORTHY The current paper explores the role of a classical modulator of hepatocellular apoptosis in early, cholestatic liver injury. These include activation of NF-κB and MAPK signaling, production of inflammatory cytokines, and recruitment of neutrophils in response to cholestasis. Because these signaling pathways are currently exploited in clinical trials for the treatment of nonalcoholic steatohepatitis and cirrhosis, the current data will help in the development of novel pharmacological options in these indications.
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Affiliation(s)
- Nadine Gehrke
- Department of Medicine, University Medical Center of the Johannes Gutenberg University , Mainz , Germany
| | - Michael Nagel
- Department of Medicine, University Medical Center of the Johannes Gutenberg University , Mainz , Germany
| | - Beate K Straub
- Institute of Pathology, University Medical Center Mainz , Mainz , Germany
| | - Marcus A Wörns
- Department of Medicine, University Medical Center of the Johannes Gutenberg University , Mainz , Germany
| | | | - Peter R Galle
- Department of Medicine, University Medical Center of the Johannes Gutenberg University , Mainz , Germany
| | - Jörn M Schattenberg
- Department of Medicine, University Medical Center of the Johannes Gutenberg University , Mainz , Germany
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29
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ASK Family Kinases Are Required for Optimal NLRP3 Inflammasome Priming. THE AMERICAN JOURNAL OF PATHOLOGY 2018; 188:1021-1030. [PMID: 29353059 DOI: 10.1016/j.ajpath.2017.12.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 11/22/2017] [Accepted: 12/11/2017] [Indexed: 12/18/2022]
Abstract
Activation of the multimeric inflammasome complex leads to inflammatory responses to biotic and abiotic triggers. The inflammasome sensor, Nod-like receptor family pyrin domain containing 3 (NLRP3), is activated by a range of stimuli and is tightly regulated to restrict excessive inflammation. Because NLRP3 responds broadly to cellular insults and regulates cell death similar to the stress-activated apoptosis signal-regulating kinases 1 and 2 (ASK1/2), we hypothesized that ASK1/2 may regulate NLRP3 activity. Although essential for mediating NLRP3 inflammasome activation, ASK1/2 were not required for NLRC4 or absent in melanoma 2 inflammasome activation. ASK1/2 was required for NLRP3 up-regulation after lipopolysaccharide treatment in primary bone marrow-derived macrophages and lung fibroblasts as well as during infection with Burkholderia thailandensis and influenza virus. Consistent with reduced NLRP3 expression in response to B. thailandensis, caspase-1 cleavage and cell death were reduced in infected bone marrow-derived macrophages, and mice lacking ASK1/2 were resistant to Burkholderia intranasal infection. Single knockouts of either ASK1 or ASK2 showed a partial role for both ASK1 and ASK2 in NLRP3 up-regulation in response to lipopolysaccharide or B. thailandensis, but ASK2 was required primarily to mediate lethal pathology during intranasal infection in vivo. Our findings identify the ASK1/2 complex as a regulator of NLRP3 activation and highlight a larger role for ASK2 in lung infection during B. thailandensis infection.
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30
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Feng Z, Zhai Y, Zheng Z, Yang L, Luo X, Dong X, Han Q, Jin J, Chen ZN, Zhu P. Loss of A20 in BM-MSCs regulates the Th17/Treg balance in Rheumatoid Arthritis. Sci Rep 2018; 8:427. [PMID: 29323140 PMCID: PMC5765124 DOI: 10.1038/s41598-017-18693-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 12/15/2017] [Indexed: 12/11/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are multi-potent cells that are self-renewable and possess the potential to differentiate into multiple lineages. Several studies demonstrated that MSCs could regulate a Th17/Treg balance and could be a potential therapeutic target for Rheumatoid Arthritis (RA). A20 is highly expressed in many cell types after the stimulation of TNF-α, where it may inhibit pro-inflammatory cytokine secretion. However, the expression of A20 in BM-MSCs in RA is not fully understood. In our study, we found that A20 was decreased in RA patients’ bone marrow MSCs (BM-MSCs), and with more IL-6 secretion, the balance of Th17/Treg was broken. In CIA mice, we found a moderate A20 decrease in mice MSCs as compared with those of control group in mRNA and protein levels. However, the IL-6 expression was increased. After umbilical cord MSCs treatment, A20 and IL-6 expressions were equal to the control group. Thus, our study indicates that loss of A20 in MSCs regulates the Th17/Treg balance in RA and the regulatory role of A20 in pro-inflammatory IL-6 production could be a potential target for the transfer of MSCs in RA adoptive therapy.
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Affiliation(s)
- Zhuan Feng
- Department of Clinical Immunology, Xijing Hospital, The Fourth Military Medical University, No. 127 West Changle Road, Xi'an, Shaanxi Province, People's Republic of China.,Department of Cell Biology, Fourth Military Medical University, Xi'an, China.,National Translational Science Center for Molecular Medicine, Xi'an, 710032, China
| | - Yue Zhai
- Department of Clinical Immunology, Xijing Hospital, The Fourth Military Medical University, No. 127 West Changle Road, Xi'an, Shaanxi Province, People's Republic of China.,Department of Cell Biology, Fourth Military Medical University, Xi'an, China.,National Translational Science Center for Molecular Medicine, Xi'an, 710032, China
| | - Zhaohui Zheng
- Department of Clinical Immunology, Xijing Hospital, The Fourth Military Medical University, No. 127 West Changle Road, Xi'an, Shaanxi Province, People's Republic of China.,National Translational Science Center for Molecular Medicine, Xi'an, 710032, China
| | - Lijie Yang
- Department of hematology, Xijing Hospital, The Fourth Military Medical University, No. 127 West Changle Road, Xi'an, Shaanxi Province, People's Republic of China
| | - Xing Luo
- Department of Clinical Immunology, Xijing Hospital, The Fourth Military Medical University, No. 127 West Changle Road, Xi'an, Shaanxi Province, People's Republic of China.,National Translational Science Center for Molecular Medicine, Xi'an, 710032, China
| | - Xiwen Dong
- Department of Clinical Immunology, Xijing Hospital, The Fourth Military Medical University, No. 127 West Changle Road, Xi'an, Shaanxi Province, People's Republic of China.,Department of Cell Biology, Fourth Military Medical University, Xi'an, China.,National Translational Science Center for Molecular Medicine, Xi'an, 710032, China
| | - Qing Han
- Department of Clinical Immunology, Xijing Hospital, The Fourth Military Medical University, No. 127 West Changle Road, Xi'an, Shaanxi Province, People's Republic of China.,National Translational Science Center for Molecular Medicine, Xi'an, 710032, China
| | - Jin Jin
- Department of Cell Biology, Fourth Military Medical University, Xi'an, China.,National Translational Science Center for Molecular Medicine, Xi'an, 710032, China
| | - Zhi-Nan Chen
- Department of Cell Biology, Fourth Military Medical University, Xi'an, China. .,National Translational Science Center for Molecular Medicine, Xi'an, 710032, China.
| | - Ping Zhu
- Department of Clinical Immunology, Xijing Hospital, The Fourth Military Medical University, No. 127 West Changle Road, Xi'an, Shaanxi Province, People's Republic of China. .,National Translational Science Center for Molecular Medicine, Xi'an, 710032, China.
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31
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The deubiquitinating enzyme TNFAIP3 mediates inactivation of hepatic ASK1 and ameliorates nonalcoholic steatohepatitis. Nat Med 2017; 24:84-94. [PMID: 29227477 DOI: 10.1038/nm.4453] [Citation(s) in RCA: 142] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 11/06/2017] [Indexed: 02/06/2023]
Abstract
Activation of apoptosis signal-regulating kinase 1 (ASK1) in hepatocytes is a key process in the progression of nonalcoholic steatohepatitis (NASH) and a promising target for treatment of the condition. However, the mechanism underlying ASK1 activation is still unclear, and thus the endogenous regulators of this kinase remain open to be exploited as potential therapeutic targets. In screening for proteins that interact with ASK1 in the context of NASH, we identified the deubiquitinase tumor necrosis factor alpha-induced protein 3 (TNFAIP3) as a key endogenous suppressor of ASK1 activation, and we found that TNFAIP3 directly interacts with and deubiquitinates ASK1 in hepatocytes. Hepatocyte-specific ablation of Tnfaip3 exacerbated nonalcoholic fatty liver disease- and NASH-related phenotypes in mice, including glucose metabolism disorders, lipid accumulation and enhanced inflammation, in an ASK1-dependent manner. In contrast, transgenic or adeno-associated virus-mediated TNFAIP3 gene delivery in the liver in both mouse and nonhuman primate models of NASH substantially blocked the onset and progression of the disease. These results implicate TNFAIP3 as a functionally important endogenous suppressor of ASK1 hyperactivation in the pathogenesis of NASH and identify it as a potential new molecular target for NASH therapy.
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32
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Apoptosis signal-regulating kinase 1 mediates the inhibitory effect of hepatocyte nuclear factor-4α on hepatocellular carcinoma. Oncotarget 2017; 7:27408-21. [PMID: 27050273 PMCID: PMC5053659 DOI: 10.18632/oncotarget.8478] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 03/16/2016] [Indexed: 12/24/2022] Open
Abstract
Previous studies provided substantial evidence of a striking suppressive effect of hepatocyte nuclear factor 4α (HNF4α) on hepatocellular carcinoma (HCC). Apoptosis signal-regulating kinase 1 (ASK1) is involved in death receptor-mediated apoptosis and may acts as a tumor suppressor in hepatocarcinogenesis. However, the status and function of ASK1 during HCC progression are unclear. In this study, we found that HNF4α increased ASK1 expression by directly binding to its promoter. ASK1 expression was dramatically suppressed and correlated with HNF4α levels in HCC tissues. Reduced ASK1 expression was associated with aggressive tumors and poor prognosis for human HCC. Moreover, ASK1 inhibited the malignant phenotype of HCC cells in vitro. Intratumoral ASK1 injection significantly suppressed the growth of subcutaneous HCC xenografts in nude mice. More interestingly, systemic ASK1 delivery strikingly inhibited the growth of orthotopic HCC nodules in NOD/SCID mice. In addition, inhibition of endogenous ASK1 partially reversed the suppressive effects of HNF4α on HCC. Collectively, this study highlights the suppressive effect of ASK1 on HCC and its biological significance in HCC development. These outcomes broaden the knowledge of ASK1 function in HCC progression, and provide a novel potential prognostic biomarker and therapeutic target for advanced HCC.
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33
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Ryuno H, Naguro I, Kamiyama M. ASK family and cancer. Adv Biol Regul 2017; 66:72-84. [PMID: 28552579 DOI: 10.1016/j.jbior.2017.05.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 05/17/2017] [Accepted: 05/17/2017] [Indexed: 06/07/2023]
Abstract
Cancer is a major problem in public health and is one of the leading causes of mortality worldwide. Many types of cancer cells exhibit aberrant cellular signal transduction in response to stress, which often leads to oncogenesis. Mitogen-activated protein kinase (MAPK) signal cascades are one of the important intracellular stress signaling pathways closely related to cancer. The key molecules in MAPK signal cascades that respond to various types of stressors are apoptosis signal-regulating kinase (ASK) family members; ASK1, ASK2 and ASK3. ASK family members are activated by a wide variety of stressors, and they regulate various cellular responses, such as cell proliferation, inflammation and apoptosis. In this review, we will discuss both the oncogenic and anti-oncogenic roles of the ASK family members in various contexts of cancer development with deeper insights into the involvement of ASK family members in cancer pathology.
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Affiliation(s)
- Hiroki Ryuno
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Isao Naguro
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Miki Kamiyama
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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34
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Ji Y, Cao L, Zeng L, Zhang Z, Xiao Q, Guan P, Chen S, Chen Y, Wang M, Guo D. The N-terminal ubiquitin-associated domain of Cezanne is crucial for its function to suppress NF-κB pathway. J Cell Biochem 2017; 119:1979-1991. [PMID: 28817177 DOI: 10.1002/jcb.26359] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 08/15/2017] [Indexed: 12/15/2022]
Abstract
Cezanne, a deubiquitinating cysteine protease (DUB) belonging to A20 subgroup of ovarian tumor (OTU) protein superfamily, functions as a negative regulator of NF-κB to attenuate NF-κB activation and to restrain pro-inflammatory transcription in response to TNF receptor (TNFR) signaling. It is the first documented OTU DUB that preferably disassembles Lys11-linked polyubiquitin chains and has been shown to regulate multiple cellular events including immune signaling, cell survival and tumor progression. Previous studies showed that in response to TNF stimulation, Cezanne is recruited to the activated TNFR complex to suppress the build-up of polyubiquitinated RIP1 signal by removing Lys63 polyubiquitin from RIP1. However, how is Cezanne recognized and recruited to TNFR complex is not clear yet. In this study, we characterized a ubiquitin-associated (UBA) domain in the N-terminal region of Cezanne and proved its activity to bind Lys63 polyubiquitin chain. By constructing a series of truncated and site-specific point mutants, we further localized the crucial binding sites for Lys63 polyubiquitin chains at Leu9 and Ser10 sites of Cezanne UBA domain. Mutation at these sites disrupted the recruitment of Cezanne to activated TNFR complex and dramatically reduced the inhibition of NF-κB activation by Cezanne. Our study demonstrated that the N-terminal UBA domain is crucial for the function of Cezanne during NF-κB activation. Cezanne is recognized and recruited into activated TNFR complex by specifically binding to polyubiquitinated signaling proteins after TNF stimulation through its N-terminal polyubiquitin binding site. This study sheds light on the molecular mechanism of negative regulation of NF-κB activation by Cezanne.
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Affiliation(s)
- Yanxi Ji
- State Key Laboratory of Virology and Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, China
| | - Liu Cao
- State Key Laboratory of Virology and Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, China
| | - Lanyi Zeng
- State Key Laboratory of Virology and Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, China
| | - Zhen Zhang
- State Key Laboratory of Virology and Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, China
| | - Qiaoqiao Xiao
- School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Penglin Guan
- State Key Laboratory of Virology and Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, China
| | - Shiyou Chen
- State Key Laboratory of Virology and Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, China
| | - Yu Chen
- State Key Laboratory of Virology and Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, China
| | - Min Wang
- School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Deyin Guo
- State Key Laboratory of Virology and Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, China.,School of Basic Medical Sciences, Wuhan University, Wuhan, China
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35
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Zhang QY, Zhao LP, Tian XX, Yan CH, Li Y, Liu YX, Wang PX, Zhang XJ, Han YL. The novel intracellular protein CREG inhibits hepatic steatosis, obesity, and insulin resistance. Hepatology 2017; 66:834-854. [PMID: 28508477 DOI: 10.1002/hep.29257] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 04/02/2017] [Accepted: 05/08/2017] [Indexed: 12/12/2022]
Abstract
UNLABELLED Cellular repressor of E1A-stimulated genes (CREG), a novel cellular glycoprotein, has been identified as a suppressor of various cardiovascular diseases because of its capacity to reduce hyperplasia, maintain vascular homeostasis, and promote endothelial restoration. However, the effects and mechanism of CREG in metabolic disorder and hepatic steatosis remain unknown. Here, we report that hepatocyte-specific CREG deletion dramatically exacerbates high-fat diet and leptin deficiency-induced (ob/ob) adverse effects such as obesity, hepatic steatosis, and metabolic disorders, whereas a beneficial effect is conferred by CREG overexpression. Additional experiments demonstrated that c-Jun N-terminal kinase 1 (JNK1) but not JNK2 is largely responsible for the protective effect of CREG on the aforementioned pathologies. Notably, JNK1 inhibition strongly prevents the adverse effects of CREG deletion on steatosis and related metabolic disorders. Mechanistically, CREG interacts directly with apoptosis signal-regulating kinase 1 (ASK1) and inhibits its phosphorylation, thereby blocking the downstream MKK4/7-JNK1 signaling pathway and leading to significantly alleviated obesity, insulin resistance, and hepatic steatosis. Importantly, dramatically reduced CREG expression and hyperactivated JNK1 signaling was observed in the livers of nonalcoholic fatty liver disease (NAFLD) patients, suggesting that CREG might be a promising therapeutic target for NAFLD and related metabolic diseases. CONCLUSION The results of our study provides evidence that CREG is a robust suppressor of hepatic steatosis and metabolic disorders through its direct interaction with ASK1 and the resultant inactivation of ASK1-JNK1 signaling. This study offers insights into NAFLD pathogenesis and its complicated pathologies, such as obesity and insulin resistance, and paves the way for disease treatment through targeting CREG. (Hepatology 2017;66:834-854).
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Affiliation(s)
- Quan-Yu Zhang
- Graduate School of Third Military Medical University, Chongqing, China.,Department of Cardiology, General Hospital of Shenyang Military Region, Shenyang, China
| | - Ling-Ping Zhao
- Institute of Model Animals of Wuhan University, Wuhan, China
| | - Xiao-Xiang Tian
- Department of Cardiology, General Hospital of Shenyang Military Region, Shenyang, China
| | - Cheng-Hui Yan
- Department of Cardiology, General Hospital of Shenyang Military Region, Shenyang, China
| | - Yang Li
- Department of Cardiology, General Hospital of Shenyang Military Region, Shenyang, China
| | - Yan-Xia Liu
- Department of Cardiology, General Hospital of Shenyang Military Region, Shenyang, China
| | - Pi-Xiao Wang
- Institute of Model Animals of Wuhan University, Wuhan, China
| | - Xiao-Jing Zhang
- Institute of Model Animals of Wuhan University, Wuhan, China
| | - Ya-Ling Han
- Department of Cardiology, General Hospital of Shenyang Military Region, Shenyang, China
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36
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Osako M, Itsumi M, Yamaguchi H, Takeuchi H, Yamaoka S. A20 restores phorbol ester-induced differentiation of THP-1 cells in the absence of nuclear factor-κB activation. J Cell Biochem 2017; 119:1475-1487. [PMID: 28771803 DOI: 10.1002/jcb.26308] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Accepted: 08/02/2017] [Indexed: 11/06/2022]
Abstract
A20, also referred to as tumor necrosis factor alpha (TNFα)-induced protein 3 (TNFAIP3), is an ubiquitin-editing enzyme whose expression is enhanced by NF-κB activation, and plays an important role in silencing NF-κB activity. Another well-known role for A20 is to protect cells from TNFα-induced apoptosis. Depletion of NF-κB in differentiating U937 monocytic leukemia cells is known to cause apoptotic cell death; however, much remains to be explored about the molecules that are expressed in an NF-κB-dependent manner and which support monocyte-macrophage differentiation. Using the monocytic cell line THP-1, and peripheral blood monocytes, we show here a sustained increase in A20 expression during monocyte-macrophage differentiation, which coincided with high NF-κB-dependent transcriptional activity. Depletion of NF-κB by stable expression of a super-repressor form of IκBα in THP-1 cells caused remarkable cell death during phorbol 12-myristate 13-acetate (PMA)-induced differentiation. A20 expression in these cells did not alter this NF-κB suppression, but was sufficient to protect the cells and restore the cell surface expression of a differentiation marker (CD11b) and phagocytic activity. Mutational analyses revealed that this A20 activity requires the carboxy-terminal zinc-finger domain, but not its deubiquitinase activity. Based on these findings, we conclude that A20, when ectopically expressed, can support both survival and differentiation of THP-1 cells in the absence of sustained NF-κB activity.
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Affiliation(s)
- Miho Osako
- Department of Molecular Virology, Graduate School of Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Momoe Itsumi
- Department of Molecular Virology, Graduate School of Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Haruka Yamaguchi
- Department of Molecular Virology, Graduate School of Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Hiroaki Takeuchi
- Department of Molecular Virology, Graduate School of Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Shoji Yamaoka
- Department of Molecular Virology, Graduate School of Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
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Pinna F, Bissinger M, Beuke K, Huber N, Longerich T, Kummer U, Schirmacher P, Sahle S, Breuhahn K. A20/TNFAIP3 Discriminates Tumor Necrosis Factor (TNF)-Induced NF-κB from JNK Pathway Activation in Hepatocytes. Front Physiol 2017; 8:610. [PMID: 28878689 PMCID: PMC5572400 DOI: 10.3389/fphys.2017.00610] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 08/08/2017] [Indexed: 12/18/2022] Open
Abstract
In the liver tumor necrosis factor (TNF)-induced signaling critically regulates the immune response of non-parenchymal cells as well as proliferation and apoptosis of hepatocytes via activation of the NF-κB and JNK pathways. Especially, the induction of negative feedback regulators, such as IκBα and A20 is responsible for the dynamic and time-restricted response of these important pathways. However, the precise mechanisms responsible for different TNF-induced phenotypes under physiological stimulation conditions are not completely understood so far. In addition, it is not known if varying TNF concentrations may differentially affect the desensitization properties of both pathways. By using computational modeling, we first showed that TNF-induced activation and downstream signaling is qualitatively comparable between primary mouse hepatocytes and immortalized hepatocellular carcinoma (HCC) cells. In order to define physiologically relevant TNF levels, which allow for an adjustable and dynamic NF-κB/JNK pathway response in parenchymal liver cells, a range of cytokine concentrations was defined that led to gradual pathway responses in HCC cells (1-5 ng/ml). Repeated stimulations with low (1 ng/ml), medium (2.5 ng/ml) and high (5 ng/ml) TNF amounts demonstrated that JNK signaling was still active at cytokine concentrations, which led to dampened NF-κB signaling illustrating differential pathway responsiveness depending on TNF input dynamics. SiRNA-mediated inhibition of the negative feedback regulator A20 (syn. TNFAIP3) or its overexpression did not significantly affect the NF-κB response. In contrast, A20 silencing increased the JNK response, while its overexpression dampened JNK phosphorylation. In addition, the A20 knockdown sensitized hepatocellular cells to TNF-induced cleavage and activity of the effector caspase-3. In conclusion, a mathematical model-based approach shows that the TNF-induced pathway responses are qualitatively comparable in primary and immortalized mouse hepatocytes. The cytokine amount defines the pathway responsiveness under repeated treatment conditions with NF-κB signaling being dampened 'earlier' than JNK. A20 appears to be the molecular switch discriminating between NF-κB and JNK signaling when stimulating with varying physiological cytokine concentrations.
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Affiliation(s)
- Federico Pinna
- Molecular Hepatopathology, Institute of Pathology, University Hospital HeidelbergHeidelberg, Germany.,Institute of Pathology, RWTH Aachen University HospitalAachen, Germany
| | - Michaela Bissinger
- Molecular Hepatopathology, Institute of Pathology, University Hospital HeidelbergHeidelberg, Germany
| | - Katharina Beuke
- Department of Modeling of Biological Processes, Centre for Organismal Studies, BioQuant, University of HeidelbergHeidelberg, Germany
| | - Nicolas Huber
- Department of Modeling of Biological Processes, Centre for Organismal Studies, BioQuant, University of HeidelbergHeidelberg, Germany
| | - Thomas Longerich
- Institute of Pathology, RWTH Aachen University HospitalAachen, Germany
| | - Ursula Kummer
- Department of Modeling of Biological Processes, Centre for Organismal Studies, BioQuant, University of HeidelbergHeidelberg, Germany
| | - Peter Schirmacher
- Molecular Hepatopathology, Institute of Pathology, University Hospital HeidelbergHeidelberg, Germany
| | - Sven Sahle
- Department of Modeling of Biological Processes, Centre for Organismal Studies, BioQuant, University of HeidelbergHeidelberg, Germany
| | - Kai Breuhahn
- Molecular Hepatopathology, Institute of Pathology, University Hospital HeidelbergHeidelberg, Germany
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Huber Y, Gehrke N, Biedenbach J, Helmig S, Simon P, Straub BK, Bergheim I, Huber T, Schuppan D, Galle PR, Wörns MA, Schuchmann M, Schattenberg JM. Voluntary distance running prevents TNF-mediated liver injury in mice through alterations of the intrahepatic immune milieu. Cell Death Dis 2017. [PMID: 28640248 PMCID: PMC5520921 DOI: 10.1038/cddis.2017.266] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Physical activity confers a broad spectrum of health benefits. Beyond the obvious role in metabolically driven diseases, the role of physical activity in acute liver injury is poorly explored. To study the role of physical activity in acute liver injury, a novel model of voluntary distance running in mice was developed and mice were subjected to acute liver injury induced by N-galactosamine (GalN) and lipopolysaccharide (LPS). Analyses included histological stains, immunoblotting, qRT-PCR and FACS analysis. Voluntary distance running increased to an average of 10.3 km/day after a learning curve. Running lead to a decrease in the absolute numbers of intrahepatic CD4+ T and B lymphocytes and macrophages after 7 weeks. In parallel, hepatic mRNA expression of inflammatory cytokines including IL-6 and IL-1beta, TGF-beta and monocyte chemoattractant protein-1 (MCP-1/CCL2) were suppressed, while TNF-α was not affected by exercise. Likewise, expression of the macrophage-specific antigen F4/80 was downregulated 1.6-fold from exercise. Notably, acute liver injury from GaIN/LPS was significantly blunted following 7 weeks of voluntary exercise as determined by liver histology, a 84.6% reduction of alanine aminotransferase (P<0.01) and a 54.6% reduction of aspartate aminotransferase (P<0.05) compared with sedentary mice. Additionally, proinflammatory cytokines, activation of caspase 3 and JNK were significantly lower, while antiapoptotic protein A20 increased. Voluntary distance running alters the intrahepatic immune phenotype producing an environment that is less susceptible to acute liver injury.
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Affiliation(s)
- Yvonne Huber
- I. Department of Medicine, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Nadine Gehrke
- I. Department of Medicine, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Jana Biedenbach
- I. Department of Medicine, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Susanne Helmig
- Department of Sports Medicine, Rehabilitation and Prevention, Johannes Gutenberg University, Mainz, Germany
| | - Perikles Simon
- Department of Sports Medicine, Rehabilitation and Prevention, Johannes Gutenberg University, Mainz, Germany
| | - Beate K Straub
- Institute of Pathology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Ina Bergheim
- Department of Nutritional Sciences, Molecular Nutritional Science, University of Vienna, Vienna A-1090, Austria
| | - Tobias Huber
- Department of General, Visceral and Transplant Surgery, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Detlef Schuppan
- Institute of Translational Immunology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Peter R Galle
- I. Department of Medicine, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Marcus A Wörns
- I. Department of Medicine, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | | | - Jörn M Schattenberg
- I. Department of Medicine, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
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Nishida T, Hattori K, Watanabe K. The regulatory and signaling mechanisms of the ASK family. Adv Biol Regul 2017; 66:2-22. [PMID: 28669716 DOI: 10.1016/j.jbior.2017.05.004] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Revised: 05/17/2017] [Accepted: 05/17/2017] [Indexed: 01/05/2023]
Abstract
Apoptosis signal-regulating kinase 1 (ASK1) was identified as a MAP3K that activates the JNK and p38 pathways, and subsequent studies have reported ASK2 and ASK3 as members of the ASK family. The ASK family is activated by various intrinsic and extrinsic stresses, including oxidative stress, ER stress and osmotic stress. Numerous lines of evidence have revealed that members of the ASK family are critical for signal transduction systems to control a wide range of stress responses such as cell death, differentiation and cytokine induction. In this review, we focus on the precise signaling mechanisms of the ASK family in response to diverse stressors.
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Affiliation(s)
- Takuto Nishida
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Japan
| | - Kazuki Hattori
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Japan.
| | - Kengo Watanabe
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Japan.
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CYLD, A20 and OTULIN deubiquitinases in NF-κB signaling and cell death: so similar, yet so different. Cell Death Differ 2017; 24:1172-1183. [PMID: 28362430 DOI: 10.1038/cdd.2017.46] [Citation(s) in RCA: 188] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 02/24/2017] [Accepted: 02/28/2017] [Indexed: 02/07/2023] Open
Abstract
Polyubiquitination of proteins has a pivotal role in the regulation of numerous cellular functions such as protein degradation, DNA repair and cell signaling. As deregulation of these processes can result in pathological conditions such as inflammatory diseases, neurodegeneration or cancer, tight regulation of the ubiquitin system is of tremendous importance. Ubiquitination by E3 ubiquitin ligases can be counteracted by the activity of several deubiquitinating enzymes (DUBs). CYLD, A20 and OTULIN have been implicated as key DUBs in the negative regulation of NF-κB transcription factor-mediated gene expression upon stimulation of cytokine receptors, antigen receptors and pattern recognition receptors, by removing distinct types of polyubiquitin chains from specific NF-κB signaling proteins. In addition, they control TNF-induced cell death signaling leading to apoptosis and necroptosis via similar mechanisms. In the case of A20, also catalytic-independent mechanisms of action have been demonstrated to have an important role. CYLD, A20 and OTULIN have largely overlapping substrates, suggesting at least partially redundant functions. However, mice deficient in one of the three DUBs show significant phenotypic differences, indicating also non-redundant functions. Here we discuss the activity and polyubiquitin chain-type specificity of CYLD, A20 and OTULIN, their specific role in NF-κB signaling and cell death, the molecular mechanisms that regulate their activity, their role in immune homeostasis and the association of defects in their activity with inflammation, autoimmunity and cancer.
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41
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Transcriptional profiling of host cell responses to encephalomyocarditis virus (EMCV). Virol J 2017; 14:45. [PMID: 28259172 PMCID: PMC5336634 DOI: 10.1186/s12985-017-0718-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 02/23/2017] [Indexed: 12/21/2022] Open
Abstract
BACKGROUD Encephalomyocarditis virus (EMCV) has been discovered on pig farms worldwide and can cause myocarditis in piglets and reproductive failure in sows. However, little is known about the host transcriptional responses to infection and host-pathogen interactions. METHODS In this study, transcription profiling was performed by Illumina RNA-Sequencing (RNA-seq) to identify EMCV induced differentially expressed genes in BHK-21 cells at serial time points (12, 24, and 30 h post infection (hpi)), using mock infected cells as control. RESULTS We identified 237, 241, and 207 differentially expressed genes (DEGs) respectively, majority of which were up-regulated. A large number of DEGs clustered into host defense, cellular signaling and metabolism categories. Moreover, short time series expression analysis revealed that 12 hpi was an important time point for expression change, indicating host virus resistance. CONCLUSIONS This RNA-seq analysis provides the first data for understanding the network of virus host interactions under EMCV infection in vitro, and for identifying host components which involved in the virus infection course.
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The Immunomodulatory Small Molecule Imiquimod Induces Apoptosis in Devil Facial Tumour Cell Lines. PLoS One 2016; 11:e0168068. [PMID: 27936237 PMCID: PMC5148113 DOI: 10.1371/journal.pone.0168068] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 11/28/2016] [Indexed: 12/13/2022] Open
Abstract
The survival of the Tasmanian devil (Sarcophilus harrisii) is threatened by devil facial tumour disease (DFTD). This transmissible cancer is usually fatal, and no successful treatments have been developed. In human studies, the small immunomodulatory molecule imiquimod is a successful immunotherapy, activating anti-tumour immunity via stimulation of toll-like receptor-7 (TLR7) signaling pathways. In addition, imiquimod is a potent inducer of apoptosis in human tumour cell lines via TLR7 independent mechanisms. Here we investigate the potential of imiquimod as a DFTD therapy through analysis of treated DFTD cell lines and Tasmanian devil fibroblasts. WST-8 proliferation assays and annexin V apoptosis assays were performed to monitor apoptosis, and changes to the expression of pro- and anti-apoptotic genes were analysed using qRT-PCR. Our results show that DFTD cell lines, but not Tasmanian devil fibroblasts, are sensitive to imiquimod-induced apoptosis in a time and concentration dependent manner. Induction of apoptosis was accompanied by down-regulation of the anti-apoptotic BCL2 and BCLXL genes, and up-regulation of the pro-apoptotic BIM gene. Continuous imiquimod treatment was required for these effects to occur. These results demonstrate that imiquimod can deregulate DFTD cell growth and survival in direct and targeted manner. In vivo, this may increase DFTD vulnerability to imiquimod-induced TLR7-mediated immune responses. Our findings have improved the current knowledge of imiquimod action in tumour cells for application to both DFTD and human cancer therapy.
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Pleiotropic properties of ASK1. Biochim Biophys Acta Gen Subj 2016; 1861:3030-3038. [PMID: 27693599 DOI: 10.1016/j.bbagen.2016.09.028] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 09/16/2016] [Accepted: 09/27/2016] [Indexed: 12/22/2022]
Abstract
BACKGROUND Apoptosis signal-regulating kinase 1 (ASK1), also known as mitogen-activated protein kinase kinase kinase 5 (MAP3K5), has the potential to induce cellular apoptosis under various physiological conditions. It has long been suggested that ASK1 is highly sensitive to oxidative stress and contributes substantially to apoptosis. However, recent studies have indicated that ASK1 has pleiotropic roles in living organisms through other mechanisms in addition to apoptosis. SCOPE OF THE REVIEW This review describes the physiological functions of ASK1 in living organisms, focusing on the regulatory mechanisms of ASK1 activity and its importance in the pathogenesis of various diseases. We also highlight recent works published within the past few years. MAJOR CONCLUSIONS ASK1 forms a high-molecular-mass complex within the cell, designated as the ASK1 signalosome. Soon after the discovery of ASK1, several regulatory components of the ASK1 signalosome have been revealed, including thioredoxin (Trx), tumor-necrosis factor α receptor-associated factors (TRAFs) and 14-3-3s. In parallel with the precise analyses unveiling the molecular basis of ASK1 regulation, the physiological or pathophysiological significance of ASK1 in diverse organs has been elucidated. In addition to the generation of global knockout mice or tissue-specific knockout mice, ASK1-specific inhibitors have illuminated the biological roles of ASK1. GENERAL SIGNIFICANCE The multi-faceted features of the function of ASK1 have been discovered over the past two decades, revealing that ASK1 is a crucial molecule for maintaining cellular homeostasis, especially under conditions of stress. Based on the results that ASK1 deficiency provides beneficial effects for several diseases, modulating ASK1 activity is a promising method to ameliorate a subset of diseases.
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Won M, Byun HS, Park KA, Hur GM. Post-translational control of NF-κB signaling by ubiquitination. Arch Pharm Res 2016; 39:1075-84. [PMID: 27287455 DOI: 10.1007/s12272-016-0772-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 06/03/2016] [Indexed: 01/01/2023]
Abstract
The transcription factor nuclear factor-kappa B (NF-κB) controls a number of essential cellular functions, including the immune response, cell proliferation, and apoptosis. NF-κB signaling must be engaged temporally and spatially and well orchestrated to prevent aberrant activation because loss of normal regulation of NF-κB is a major contributor to a variety of pathological diseases, including inflammatory diseases, autoimmune diseases, and cancers. Thus, understanding the molecular mechanisms controlling NF-κB activation is an important part of treatment of these relevant diseases. Although NF-κB transcriptional activity is largely regulated by nuclear translocation, post-translational modification of NF-κB signaling components, including phosphorylation, ubiquitination, acetylation, and methylation, has emerged as an important mechanism affecting activity. Many proteins have been shown to ubiquitinate and regulate NF-κB activation at the receptor signaling complex in response to a variety of ligands, such as tumor necrosis factor, interleukin-1, and Toll-like receptor ligands. In this review, we discuss our current knowledge of ubiquitination patterns and their functional role in NF-κB regulation.
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Affiliation(s)
- Minho Won
- Research Institute for Medical Science, College of Medicine, Chungnam National University, Daejeon, 35015, Republic of Korea
| | - Hee Sun Byun
- Research Institute for Medical Science, College of Medicine, Chungnam National University, Daejeon, 35015, Republic of Korea
| | - Kyeong Ah Park
- Research Institute for Medical Science, College of Medicine, Chungnam National University, Daejeon, 35015, Republic of Korea
| | - Gang Min Hur
- Research Institute for Medical Science, College of Medicine, Chungnam National University, Daejeon, 35015, Republic of Korea. .,Department of Pharmacology, Research Institute for Medical Science, College of Medicine, Chungnam National University, Daejeon, 35015, Republic of Korea.
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Catrysse L, Farhang Ghahremani M, Vereecke L, Youssef SA, Mc Guire C, Sze M, Weber A, Heikenwalder M, de Bruin A, Beyaert R, van Loo G. A20 prevents chronic liver inflammation and cancer by protecting hepatocytes from death. Cell Death Dis 2016; 7:e2250. [PMID: 27253414 PMCID: PMC5143384 DOI: 10.1038/cddis.2016.154] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 04/11/2016] [Accepted: 04/12/2016] [Indexed: 12/15/2022]
Abstract
An important regulator of inflammatory signalling is the ubiquitin-editing protein A20 that acts as a break on nuclear factor-κB (NF-κB) activation, but also exerts important cytoprotective functions. A20 knockout mice are cachectic and die prematurely due to excessive multi-organ inflammation. To establish the importance of A20 in liver homeostasis and pathology, we developed a novel mouse line lacking A20 specifically in liver parenchymal cells. These mice spontaneously develop chronic liver inflammation but no fibrosis or hepatocellular carcinomas, illustrating an important role for A20 in normal liver tissue homeostasis. Hepatocyte-specific A20 knockout mice show sustained NF-κB-dependent gene expression in the liver upon tumor necrosis factor (TNF) or lipopolysaccharide injection, as well as hepatocyte apoptosis and lethality upon challenge with sublethal doses of TNF, demonstrating an essential role for A20 in the protection of mice against acute liver failure. Finally, chronic liver inflammation and enhanced hepatocyte apoptosis in hepatocyte-specific A20 knockout mice was associated with increased susceptibility to chemically or high fat-diet-induced hepatocellular carcinoma development. Together, these studies establish A20 as a crucial hepatoprotective factor.
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Affiliation(s)
- L Catrysse
- Inflammation Research Center, VIB, Ghent B-9052, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent B-9052, Belgium
| | - M Farhang Ghahremani
- Inflammation Research Center, VIB, Ghent B-9052, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent B-9052, Belgium
| | - L Vereecke
- Inflammation Research Center, VIB, Ghent B-9052, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent B-9052, Belgium
| | - S A Youssef
- Dutch Molecular Pathology Center, Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, Utrecht NL-3584, The Netherlands
| | - C Mc Guire
- Inflammation Research Center, VIB, Ghent B-9052, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent B-9052, Belgium
| | - M Sze
- Inflammation Research Center, VIB, Ghent B-9052, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent B-9052, Belgium
| | - A Weber
- Institute of Surgical Pathology, University Zurich, Zurich CH-8091, Switzerland
| | - M Heikenwalder
- Institute of Virology, Technische Universität München, Munich D-81675, Germany
- Division of Chronic Inflammation and Cancer, German Cancer Research Center, Heidelberg D-69120, Germany
| | - A de Bruin
- Dutch Molecular Pathology Center, Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, Utrecht NL-3584, The Netherlands
- University Medical Center Groningen, Department of Pediatrics, University of Groningen, Groningen NL-9713, The Netherlands
| | - R Beyaert
- Inflammation Research Center, VIB, Ghent B-9052, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent B-9052, Belgium
| | - G van Loo
- Inflammation Research Center, VIB, Ghent B-9052, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent B-9052, Belgium
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Yang Z, Zhong Z, Li M, Xiong Y, Wang Y, Peng G, Ye Q. Hypothermic machine perfusion increases A20 expression which protects renal cells against ischemia/reperfusion injury by suppressing inflammation, apoptosis and necroptosis. Int J Mol Med 2016; 38:161-71. [PMID: 27177159 PMCID: PMC4899006 DOI: 10.3892/ijmm.2016.2586] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 04/21/2016] [Indexed: 12/14/2022] Open
Abstract
There is an urgent need to improve the quality of donor organs obtained after cardiac death. In the present study, we examined the potential mechanisms through which A20 protects renal cells against ischemia/reperfusion injury (IRI) following either hypothermic machine perfusion (HMP) or static cold storage (CS) of the kidneys in a rabbit model. The expression of markers of apoptosis, necroptosis and inflammation in frozen kidney tissues were detected by western blot analysis, RT-qPCR and ELISA. Compared with the CS group, A20 expression was significantly higher in the tissue from the HMP group (P<0.01). By contrast, the expression of nuclear factor-κB (NF-κB) and tumor necrosis factor-α (TNF-α) was significantly lower in HMP group (P<0.01), whereas IκBα expression was significantly higher (P<0.01). The expression of apoptosis signal-regulating kinase 1 (ASK1), phosphorylated (p-)c-Jun N-terminal kinase (JNK) and activated caspase-3 in the HMP group was significantly downregulated compared with that in the CS group (all P<0.01). In addition, A20 inhibited receptor-interacting protein kinase 3 (RIPK3)-mediated necroptosis in the kidney. RIPK3 expression in the HMP group was significantly lower than that in the CS group (P<0.01), although the levels in both groups were higher than those in the sham group (P<0.01). Based on these findings, we propose a novel mechanism underlying the anti-apoptotic effect of A20 in renal cells in which A20 binds to ASK1 and promotes the degradation of ASK1 leading to the suppression of JNK activation and eventually, to the blockade of apoptosis. Thus, HMP reduces inflammation, apoptosis and necroptosis by upregulating the expression of A20; this mechanism may be responsible for protecting the kidney against IRI.
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Affiliation(s)
- Zixuan Yang
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, Hubei 430071, P.R. China
| | - Zibiao Zhong
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, Hubei 430071, P.R. China
| | - Mingxia Li
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, Hubei 430071, P.R. China
| | - Yan Xiong
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, Hubei 430071, P.R. China
| | - Yanfeng Wang
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, Hubei 430071, P.R. China
| | - Guizhu Peng
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, Hubei 430071, P.R. China
| | - Qifa Ye
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, Hubei 430071, P.R. China
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Yu Z, Chen T, Li X, Yang M, Tang S, Zhu X, Gu Y, Su X, Xia M, Li W, Zhang X, Wang Q, Cao X, Wang J. Lys29-linkage of ASK1 by Skp1-Cullin 1-Fbxo21 ubiquitin ligase complex is required for antiviral innate response. eLife 2016; 5. [PMID: 27063938 PMCID: PMC4887211 DOI: 10.7554/elife.14087] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Accepted: 04/09/2016] [Indexed: 12/25/2022] Open
Abstract
Protein ubiquitination regulated by ubiquitin ligases plays important roles in innate immunity. However, key regulators of ubiquitination during innate response and roles of new types of ubiquitination (apart from Lys48- and Lys63-linkage) in control of innate signaling have not been clearly understood. Here we report that F-box only protein Fbxo21, a functionally unknown component of SCF (Skp1–Cul1–F-box protein) complex, facilitates Lys29-linkage and activation of ASK1 (apoptosis signal-regulating kinase 1), and promotes type I interferon production upon viral infection. Fbxo21 deficiency in mice cells impairs virus-induced Lys29-linkage and activation of ASK1, attenuates c-Jun N-terminal kinase (JNK) and p38 signaling pathway, and decreases the production of proinflammatory cytokines and type I interferon, resulting in reduced antiviral innate response and enhanced virus replication. Therefore Fbxo21 is required for ASK1 activation via Lys29-linkage of ASK1 during antiviral innate response, providing mechanistic insights into non-proteolytic roles of SCF complex in innate immune response. DOI:http://dx.doi.org/10.7554/eLife.14087.001 The innate immune system is the body’s first line of defense against being infected by viruses and other microbes. Upon recognizing a virus, host cells trigger the innate immune response in an effort to eliminate the threat. However, innate immune responses must be carefully controlled because an excessive response can cause inflammation that harms the body. The innate immune response involves a variety of cells and processes that are each activated through a series of communication systems called signaling pathways. While much has been learned about which parts of a virus trigger the innate immune response, it is not clear how the immune response to the virus is controlled. It has been suggested that a process known as ubiquitination could be involved in regulating the activity of signaling pathways that activate the innate immune response. During ubiquitination, enzymes attach a small molecule called ubiquitin to a specific target protein. Ubiquitin often acts as a label that targets a particular protein for destruction. Enzymes called E3 ubiquitin ligases play central roles in identifying specific target proteins for ubiquitination. Some of these enzymes consist of a single protein unit that acts alone, but other E3 ubiquitin ligases are formed by groups (or “complexes”) of several proteins working together. Members of the F-box only protein family are components of some ubiquitin ligase complexes. Here, Yu et al. used a “microarray” technique to assess which F-box only proteins in mice are produced during an immune response to two viruses. The experiments identified an F-box protein called Fbxo21 as a potential candidate for a role in regulating the innate immune response. Additional experiments revealed that Fbxo21 is involved in adding ubiquitin to a specific location on a signaling protein called ASK1, which is known to be crucial for innate immune responses. Instead of targeting ASK1 for destruction, this ubiquitination activates ASK1. Therefore, Yu et al.’s findings demonstrate that Fbxo21 plays an important role in regulating innate immune responses. A future challenge is to investigate exactly how ASK1 is activated by the ubiquitin. DOI:http://dx.doi.org/10.7554/eLife.14087.002
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Affiliation(s)
- Zhou Yu
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou, China.,National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai, China.,National Key Laboratory of Medical Molecular Biology and Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Beijing, China
| | - Taoyong Chen
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai, China
| | - Xuelian Li
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai, China
| | - Mingjin Yang
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai, China.,National Key Laboratory of Medical Molecular Biology and Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Beijing, China
| | - Songqing Tang
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou, China
| | - Xuhui Zhu
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai, China
| | - Yan Gu
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai, China
| | - Xiaoping Su
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai, China
| | - Meng Xia
- National Key Laboratory of Medical Molecular Biology and Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Beijing, China
| | - Weihua Li
- Institute of Basic Medical Sciences, National Center of Biomedical Analysis, Beijing, China
| | - Xuemin Zhang
- Institute of Basic Medical Sciences, National Center of Biomedical Analysis, Beijing, China
| | - Qingqing Wang
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou, China
| | - Xuetao Cao
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai, China.,National Key Laboratory of Medical Molecular Biology and Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Beijing, China
| | - Jianli Wang
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou, China
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48
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Fukaya M, Brorsson CA, Meyerovich K, Catrysse L, Delaroche D, Vanzela EC, Ortis F, Beyaert R, Nielsen LB, Andersen ML, Mortensen HB, Pociot F, van Loo G, Størling J, Cardozo AK. A20 Inhibits β-Cell Apoptosis by Multiple Mechanisms and Predicts Residual β-Cell Function in Type 1 Diabetes. Mol Endocrinol 2015; 30:48-61. [PMID: 26652732 DOI: 10.1210/me.2015-1176] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Activation of the transcription factor nuclear factor kappa B (NFkB) contributes to β-cell death in type 1 diabetes (T1D). Genome-wide association studies have identified the gene TNF-induced protein 3 (TNFAIP3), encoding for the zinc finger protein A20, as a susceptibility locus for T1D. A20 restricts NF-κB signaling and has strong antiapoptotic activities in β-cells. Although the role of A20 on NF-κB inhibition is well characterized, its other antiapoptotic functions are largely unknown. By studying INS-1E cells and rat dispersed islet cells knocked down or overexpressing A20 and islets isolated from the β-cell-specific A20 knockout mice, we presently demonstrate that A20 has broader effects in β-cells that are not restricted to inhibition of NF-κB. These involves, suppression of the proapoptotic mitogen-activated protein kinase c-Jun N-terminal kinase (JNK), activation of survival signaling via v-akt murine thymoma viral oncogene homolog (Akt) and consequently inhibition of the intrinsic apoptotic pathway. Finally, in a cohort of T1D children, we observed that the risk allele of the rs2327832 single nucleotide polymorphism of TNFAIP3 predicted lower C-peptide and higher hemoglobin A1c (HbA1c) levels 12 months after disease onset, indicating reduced residual β-cell function and impaired glycemic control. In conclusion, our results indicate a critical role for A20 in the regulation of β-cell survival and unveil novel mechanisms by which A20 controls β-cell fate. Moreover, we identify the single nucleotide polymorphism rs2327832 of TNFAIP3 as a possible prognostic marker for diabetes outcome in children with T1D.
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Affiliation(s)
- Makiko Fukaya
- Université Libre de Bruxelles Center for Diabetes Research (M.F., K.M., D.D., E.C.V., A.K.C.), Free University Brussels, 1070 Brussels, Belgium; Copenhagen Diabetes Research Center (C.A.B., L.B.N., M.L.A., H.B.M., F.P., J.S.), Department of Pediatrics E, Copenhagen University Hospital Herlev, DL-2730 Herlev, Denmark; Inflammation Research Center (L.C., R.B., G.v.L.), Vlaams Instituut voor Biotechnologie, 9052 Gent, Belgium; Department of Biomedical Molecular Biology (L.C., R.B., G.v.L.), 9052 Gent University, Gent, Belgium; Laboratory of Endocrine Pancreas and Metabolism (E.C.V.), Department of Structural and Functional Biology, Institute of Biology, State University of Campinas, 13083-970 Campinas, Brazil; and Department of Development and Cellular Biology (F.O.), Institute of Biomedical Sciences, 05508-900 São Paulo University, São Paulo, Brazil
| | - Caroline A Brorsson
- Université Libre de Bruxelles Center for Diabetes Research (M.F., K.M., D.D., E.C.V., A.K.C.), Free University Brussels, 1070 Brussels, Belgium; Copenhagen Diabetes Research Center (C.A.B., L.B.N., M.L.A., H.B.M., F.P., J.S.), Department of Pediatrics E, Copenhagen University Hospital Herlev, DL-2730 Herlev, Denmark; Inflammation Research Center (L.C., R.B., G.v.L.), Vlaams Instituut voor Biotechnologie, 9052 Gent, Belgium; Department of Biomedical Molecular Biology (L.C., R.B., G.v.L.), 9052 Gent University, Gent, Belgium; Laboratory of Endocrine Pancreas and Metabolism (E.C.V.), Department of Structural and Functional Biology, Institute of Biology, State University of Campinas, 13083-970 Campinas, Brazil; and Department of Development and Cellular Biology (F.O.), Institute of Biomedical Sciences, 05508-900 São Paulo University, São Paulo, Brazil
| | - Kira Meyerovich
- Université Libre de Bruxelles Center for Diabetes Research (M.F., K.M., D.D., E.C.V., A.K.C.), Free University Brussels, 1070 Brussels, Belgium; Copenhagen Diabetes Research Center (C.A.B., L.B.N., M.L.A., H.B.M., F.P., J.S.), Department of Pediatrics E, Copenhagen University Hospital Herlev, DL-2730 Herlev, Denmark; Inflammation Research Center (L.C., R.B., G.v.L.), Vlaams Instituut voor Biotechnologie, 9052 Gent, Belgium; Department of Biomedical Molecular Biology (L.C., R.B., G.v.L.), 9052 Gent University, Gent, Belgium; Laboratory of Endocrine Pancreas and Metabolism (E.C.V.), Department of Structural and Functional Biology, Institute of Biology, State University of Campinas, 13083-970 Campinas, Brazil; and Department of Development and Cellular Biology (F.O.), Institute of Biomedical Sciences, 05508-900 São Paulo University, São Paulo, Brazil
| | - Leen Catrysse
- Université Libre de Bruxelles Center for Diabetes Research (M.F., K.M., D.D., E.C.V., A.K.C.), Free University Brussels, 1070 Brussels, Belgium; Copenhagen Diabetes Research Center (C.A.B., L.B.N., M.L.A., H.B.M., F.P., J.S.), Department of Pediatrics E, Copenhagen University Hospital Herlev, DL-2730 Herlev, Denmark; Inflammation Research Center (L.C., R.B., G.v.L.), Vlaams Instituut voor Biotechnologie, 9052 Gent, Belgium; Department of Biomedical Molecular Biology (L.C., R.B., G.v.L.), 9052 Gent University, Gent, Belgium; Laboratory of Endocrine Pancreas and Metabolism (E.C.V.), Department of Structural and Functional Biology, Institute of Biology, State University of Campinas, 13083-970 Campinas, Brazil; and Department of Development and Cellular Biology (F.O.), Institute of Biomedical Sciences, 05508-900 São Paulo University, São Paulo, Brazil
| | - Diane Delaroche
- Université Libre de Bruxelles Center for Diabetes Research (M.F., K.M., D.D., E.C.V., A.K.C.), Free University Brussels, 1070 Brussels, Belgium; Copenhagen Diabetes Research Center (C.A.B., L.B.N., M.L.A., H.B.M., F.P., J.S.), Department of Pediatrics E, Copenhagen University Hospital Herlev, DL-2730 Herlev, Denmark; Inflammation Research Center (L.C., R.B., G.v.L.), Vlaams Instituut voor Biotechnologie, 9052 Gent, Belgium; Department of Biomedical Molecular Biology (L.C., R.B., G.v.L.), 9052 Gent University, Gent, Belgium; Laboratory of Endocrine Pancreas and Metabolism (E.C.V.), Department of Structural and Functional Biology, Institute of Biology, State University of Campinas, 13083-970 Campinas, Brazil; and Department of Development and Cellular Biology (F.O.), Institute of Biomedical Sciences, 05508-900 São Paulo University, São Paulo, Brazil
| | - Emerielle C Vanzela
- Université Libre de Bruxelles Center for Diabetes Research (M.F., K.M., D.D., E.C.V., A.K.C.), Free University Brussels, 1070 Brussels, Belgium; Copenhagen Diabetes Research Center (C.A.B., L.B.N., M.L.A., H.B.M., F.P., J.S.), Department of Pediatrics E, Copenhagen University Hospital Herlev, DL-2730 Herlev, Denmark; Inflammation Research Center (L.C., R.B., G.v.L.), Vlaams Instituut voor Biotechnologie, 9052 Gent, Belgium; Department of Biomedical Molecular Biology (L.C., R.B., G.v.L.), 9052 Gent University, Gent, Belgium; Laboratory of Endocrine Pancreas and Metabolism (E.C.V.), Department of Structural and Functional Biology, Institute of Biology, State University of Campinas, 13083-970 Campinas, Brazil; and Department of Development and Cellular Biology (F.O.), Institute of Biomedical Sciences, 05508-900 São Paulo University, São Paulo, Brazil
| | - Fernanda Ortis
- Université Libre de Bruxelles Center for Diabetes Research (M.F., K.M., D.D., E.C.V., A.K.C.), Free University Brussels, 1070 Brussels, Belgium; Copenhagen Diabetes Research Center (C.A.B., L.B.N., M.L.A., H.B.M., F.P., J.S.), Department of Pediatrics E, Copenhagen University Hospital Herlev, DL-2730 Herlev, Denmark; Inflammation Research Center (L.C., R.B., G.v.L.), Vlaams Instituut voor Biotechnologie, 9052 Gent, Belgium; Department of Biomedical Molecular Biology (L.C., R.B., G.v.L.), 9052 Gent University, Gent, Belgium; Laboratory of Endocrine Pancreas and Metabolism (E.C.V.), Department of Structural and Functional Biology, Institute of Biology, State University of Campinas, 13083-970 Campinas, Brazil; and Department of Development and Cellular Biology (F.O.), Institute of Biomedical Sciences, 05508-900 São Paulo University, São Paulo, Brazil
| | - Rudi Beyaert
- Université Libre de Bruxelles Center for Diabetes Research (M.F., K.M., D.D., E.C.V., A.K.C.), Free University Brussels, 1070 Brussels, Belgium; Copenhagen Diabetes Research Center (C.A.B., L.B.N., M.L.A., H.B.M., F.P., J.S.), Department of Pediatrics E, Copenhagen University Hospital Herlev, DL-2730 Herlev, Denmark; Inflammation Research Center (L.C., R.B., G.v.L.), Vlaams Instituut voor Biotechnologie, 9052 Gent, Belgium; Department of Biomedical Molecular Biology (L.C., R.B., G.v.L.), 9052 Gent University, Gent, Belgium; Laboratory of Endocrine Pancreas and Metabolism (E.C.V.), Department of Structural and Functional Biology, Institute of Biology, State University of Campinas, 13083-970 Campinas, Brazil; and Department of Development and Cellular Biology (F.O.), Institute of Biomedical Sciences, 05508-900 São Paulo University, São Paulo, Brazil
| | - Lotte B Nielsen
- Université Libre de Bruxelles Center for Diabetes Research (M.F., K.M., D.D., E.C.V., A.K.C.), Free University Brussels, 1070 Brussels, Belgium; Copenhagen Diabetes Research Center (C.A.B., L.B.N., M.L.A., H.B.M., F.P., J.S.), Department of Pediatrics E, Copenhagen University Hospital Herlev, DL-2730 Herlev, Denmark; Inflammation Research Center (L.C., R.B., G.v.L.), Vlaams Instituut voor Biotechnologie, 9052 Gent, Belgium; Department of Biomedical Molecular Biology (L.C., R.B., G.v.L.), 9052 Gent University, Gent, Belgium; Laboratory of Endocrine Pancreas and Metabolism (E.C.V.), Department of Structural and Functional Biology, Institute of Biology, State University of Campinas, 13083-970 Campinas, Brazil; and Department of Development and Cellular Biology (F.O.), Institute of Biomedical Sciences, 05508-900 São Paulo University, São Paulo, Brazil
| | - Marie L Andersen
- Université Libre de Bruxelles Center for Diabetes Research (M.F., K.M., D.D., E.C.V., A.K.C.), Free University Brussels, 1070 Brussels, Belgium; Copenhagen Diabetes Research Center (C.A.B., L.B.N., M.L.A., H.B.M., F.P., J.S.), Department of Pediatrics E, Copenhagen University Hospital Herlev, DL-2730 Herlev, Denmark; Inflammation Research Center (L.C., R.B., G.v.L.), Vlaams Instituut voor Biotechnologie, 9052 Gent, Belgium; Department of Biomedical Molecular Biology (L.C., R.B., G.v.L.), 9052 Gent University, Gent, Belgium; Laboratory of Endocrine Pancreas and Metabolism (E.C.V.), Department of Structural and Functional Biology, Institute of Biology, State University of Campinas, 13083-970 Campinas, Brazil; and Department of Development and Cellular Biology (F.O.), Institute of Biomedical Sciences, 05508-900 São Paulo University, São Paulo, Brazil
| | - Henrik B Mortensen
- Université Libre de Bruxelles Center for Diabetes Research (M.F., K.M., D.D., E.C.V., A.K.C.), Free University Brussels, 1070 Brussels, Belgium; Copenhagen Diabetes Research Center (C.A.B., L.B.N., M.L.A., H.B.M., F.P., J.S.), Department of Pediatrics E, Copenhagen University Hospital Herlev, DL-2730 Herlev, Denmark; Inflammation Research Center (L.C., R.B., G.v.L.), Vlaams Instituut voor Biotechnologie, 9052 Gent, Belgium; Department of Biomedical Molecular Biology (L.C., R.B., G.v.L.), 9052 Gent University, Gent, Belgium; Laboratory of Endocrine Pancreas and Metabolism (E.C.V.), Department of Structural and Functional Biology, Institute of Biology, State University of Campinas, 13083-970 Campinas, Brazil; and Department of Development and Cellular Biology (F.O.), Institute of Biomedical Sciences, 05508-900 São Paulo University, São Paulo, Brazil
| | - Flemming Pociot
- Université Libre de Bruxelles Center for Diabetes Research (M.F., K.M., D.D., E.C.V., A.K.C.), Free University Brussels, 1070 Brussels, Belgium; Copenhagen Diabetes Research Center (C.A.B., L.B.N., M.L.A., H.B.M., F.P., J.S.), Department of Pediatrics E, Copenhagen University Hospital Herlev, DL-2730 Herlev, Denmark; Inflammation Research Center (L.C., R.B., G.v.L.), Vlaams Instituut voor Biotechnologie, 9052 Gent, Belgium; Department of Biomedical Molecular Biology (L.C., R.B., G.v.L.), 9052 Gent University, Gent, Belgium; Laboratory of Endocrine Pancreas and Metabolism (E.C.V.), Department of Structural and Functional Biology, Institute of Biology, State University of Campinas, 13083-970 Campinas, Brazil; and Department of Development and Cellular Biology (F.O.), Institute of Biomedical Sciences, 05508-900 São Paulo University, São Paulo, Brazil
| | - Geert van Loo
- Université Libre de Bruxelles Center for Diabetes Research (M.F., K.M., D.D., E.C.V., A.K.C.), Free University Brussels, 1070 Brussels, Belgium; Copenhagen Diabetes Research Center (C.A.B., L.B.N., M.L.A., H.B.M., F.P., J.S.), Department of Pediatrics E, Copenhagen University Hospital Herlev, DL-2730 Herlev, Denmark; Inflammation Research Center (L.C., R.B., G.v.L.), Vlaams Instituut voor Biotechnologie, 9052 Gent, Belgium; Department of Biomedical Molecular Biology (L.C., R.B., G.v.L.), 9052 Gent University, Gent, Belgium; Laboratory of Endocrine Pancreas and Metabolism (E.C.V.), Department of Structural and Functional Biology, Institute of Biology, State University of Campinas, 13083-970 Campinas, Brazil; and Department of Development and Cellular Biology (F.O.), Institute of Biomedical Sciences, 05508-900 São Paulo University, São Paulo, Brazil
| | - Joachim Størling
- Université Libre de Bruxelles Center for Diabetes Research (M.F., K.M., D.D., E.C.V., A.K.C.), Free University Brussels, 1070 Brussels, Belgium; Copenhagen Diabetes Research Center (C.A.B., L.B.N., M.L.A., H.B.M., F.P., J.S.), Department of Pediatrics E, Copenhagen University Hospital Herlev, DL-2730 Herlev, Denmark; Inflammation Research Center (L.C., R.B., G.v.L.), Vlaams Instituut voor Biotechnologie, 9052 Gent, Belgium; Department of Biomedical Molecular Biology (L.C., R.B., G.v.L.), 9052 Gent University, Gent, Belgium; Laboratory of Endocrine Pancreas and Metabolism (E.C.V.), Department of Structural and Functional Biology, Institute of Biology, State University of Campinas, 13083-970 Campinas, Brazil; and Department of Development and Cellular Biology (F.O.), Institute of Biomedical Sciences, 05508-900 São Paulo University, São Paulo, Brazil
| | - Alessandra K Cardozo
- Université Libre de Bruxelles Center for Diabetes Research (M.F., K.M., D.D., E.C.V., A.K.C.), Free University Brussels, 1070 Brussels, Belgium; Copenhagen Diabetes Research Center (C.A.B., L.B.N., M.L.A., H.B.M., F.P., J.S.), Department of Pediatrics E, Copenhagen University Hospital Herlev, DL-2730 Herlev, Denmark; Inflammation Research Center (L.C., R.B., G.v.L.), Vlaams Instituut voor Biotechnologie, 9052 Gent, Belgium; Department of Biomedical Molecular Biology (L.C., R.B., G.v.L.), 9052 Gent University, Gent, Belgium; Laboratory of Endocrine Pancreas and Metabolism (E.C.V.), Department of Structural and Functional Biology, Institute of Biology, State University of Campinas, 13083-970 Campinas, Brazil; and Department of Development and Cellular Biology (F.O.), Institute of Biomedical Sciences, 05508-900 São Paulo University, São Paulo, Brazil
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49
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Shao B, Wei X, Luo M, Yu J, Tong A, Ma X, Ye T, Deng H, Sang Y, Liang X, Ma Y, Wu Q, Du W, Du J, Gao X, Wen Y, Fu P, Shi H, Luo S, Wei Y. Inhibition of A20 expression in tumor microenvironment exerts anti-tumor effect through inducing myeloid-derived suppressor cells apoptosis. Sci Rep 2015; 5:16437. [PMID: 26561336 PMCID: PMC4642332 DOI: 10.1038/srep16437] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 10/14/2015] [Indexed: 02/05/2023] Open
Abstract
Myeloid-derived suppressor cells (MDSCs) are known to play important roles in the development of immunosuppressive tumor microenvironment. A20 is a zinc-finger protein which could negatively regulate apoptosis in several cell types. However, the role of A20 in tumor microenvironment remains largely unknown. In this study, we found that A20 was over-expressed in MDSCs. The treatment of tumor-bearing mice with small interfering RNA targeting A20 (si-A20) inhibited the growth of tumors. The infiltration of MDSCs was dramatically reduced after si-A20 treatment, as compared to control groups, whereas the numbers of dendritic cells and macrophages were not affected. Also, injection of si-A20 improved T cell mediated tumor-specific immune response. Depletion of MDSCs with anti-Gr1 antibody showed similar antitumor effect and improved T cell response. TNF-α was highly expressed after si-A20 injection. Furthermore, si-A20 induced apoptosis of MDSCs in the presence of TNF-α both in vivo and in vitro. Cleaved Caspase-3 and Caspase-8 were elevated with the activation of JNK pathway after the induction of MDSC apoptosis by si-A20. Thus, our findings suggested that knockdown of A20 in tumor site inhibited tumor growth at least through inducing the apoptosis of MDSCs. A20 might be a potential target in anticancer therapy.
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Affiliation(s)
- Bin Shao
- Division of Nephrology of Department of Internal Medicine and Lab of Aging Research, State Key Laboratory of Biotherapy &Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.,College of life science, Sichuan University, Chengdu 610041, China
| | - Xiawei Wei
- Division of Nephrology of Department of Internal Medicine and Lab of Aging Research, State Key Laboratory of Biotherapy &Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.,College of life science, Sichuan University, Chengdu 610041, China
| | - Min Luo
- Division of Nephrology of Department of Internal Medicine and Lab of Aging Research, State Key Laboratory of Biotherapy &Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.,College of life science, Sichuan University, Chengdu 610041, China
| | - Jiayun Yu
- Division of Nephrology of Department of Internal Medicine and Lab of Aging Research, State Key Laboratory of Biotherapy &Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.,College of life science, Sichuan University, Chengdu 610041, China
| | - Aiping Tong
- Division of Nephrology of Department of Internal Medicine and Lab of Aging Research, State Key Laboratory of Biotherapy &Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.,College of life science, Sichuan University, Chengdu 610041, China
| | - Xuelei Ma
- Division of Nephrology of Department of Internal Medicine and Lab of Aging Research, State Key Laboratory of Biotherapy &Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.,College of life science, Sichuan University, Chengdu 610041, China
| | - Tinghong Ye
- Division of Nephrology of Department of Internal Medicine and Lab of Aging Research, State Key Laboratory of Biotherapy &Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.,College of life science, Sichuan University, Chengdu 610041, China
| | - Hongxin Deng
- Division of Nephrology of Department of Internal Medicine and Lab of Aging Research, State Key Laboratory of Biotherapy &Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.,College of life science, Sichuan University, Chengdu 610041, China
| | - Yaxiong Sang
- College of life science, Sichuan University, Chengdu 610041, China
| | - Xiao Liang
- Division of Nephrology of Department of Internal Medicine and Lab of Aging Research, State Key Laboratory of Biotherapy &Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.,College of life science, Sichuan University, Chengdu 610041, China
| | - Yu Ma
- Division of Nephrology of Department of Internal Medicine and Lab of Aging Research, State Key Laboratory of Biotherapy &Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.,College of life science, Sichuan University, Chengdu 610041, China
| | - Qinjie Wu
- Division of Nephrology of Department of Internal Medicine and Lab of Aging Research, State Key Laboratory of Biotherapy &Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.,College of life science, Sichuan University, Chengdu 610041, China
| | - Wei Du
- Division of Nephrology of Department of Internal Medicine and Lab of Aging Research, State Key Laboratory of Biotherapy &Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.,College of life science, Sichuan University, Chengdu 610041, China
| | - Jing Du
- Division of Nephrology of Department of Internal Medicine and Lab of Aging Research, State Key Laboratory of Biotherapy &Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.,College of life science, Sichuan University, Chengdu 610041, China
| | - Xiang Gao
- Division of Nephrology of Department of Internal Medicine and Lab of Aging Research, State Key Laboratory of Biotherapy &Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.,College of life science, Sichuan University, Chengdu 610041, China
| | - Yi Wen
- Division of Nephrology of Department of Internal Medicine and Lab of Aging Research, State Key Laboratory of Biotherapy &Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.,College of life science, Sichuan University, Chengdu 610041, China
| | - Ping Fu
- Division of Nephrology of Department of Internal Medicine and Lab of Aging Research, State Key Laboratory of Biotherapy &Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.,College of life science, Sichuan University, Chengdu 610041, China
| | - Huashan Shi
- Division of Nephrology of Department of Internal Medicine and Lab of Aging Research, State Key Laboratory of Biotherapy &Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.,College of life science, Sichuan University, Chengdu 610041, China
| | - Shuntao Luo
- Division of Nephrology of Department of Internal Medicine and Lab of Aging Research, State Key Laboratory of Biotherapy &Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.,College of life science, Sichuan University, Chengdu 610041, China
| | - Yuquan Wei
- Division of Nephrology of Department of Internal Medicine and Lab of Aging Research, State Key Laboratory of Biotherapy &Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.,College of life science, Sichuan University, Chengdu 610041, China
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Saitoh Y, Hamano A, Mochida K, Kakeya A, Uno M, Tsuruyama E, Ichikawa H, Tokunaga F, Utsunomiya A, Watanabe T, Yamaoka S. A20 targets caspase-8 and FADD to protect HTLV-I-infected cells. Leukemia 2015; 30:716-27. [PMID: 26437781 DOI: 10.1038/leu.2015.267] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 08/31/2015] [Accepted: 09/18/2015] [Indexed: 12/15/2022]
Abstract
Adult T-cell leukemia (ATL) arises from a human T-cell leukemia virus type I (HTLV-I)-infected cell and has few therapeutic options. Here, we have uncovered a previously unrecognized role for a ubiquitin-editing enzyme A20 in the survival of HTLV-I-infected cells. Unlike in lymphomas of the B-cell lineage, A20 is abundantly expressed in primary ATL cells without notable mutations. Depletion of A20 in HTLV-I-infected cells resulted in caspase activation, cell death induction and impaired tumorigenicity in mouse xenograft models. Mechanistically, A20 stably interacts with caspase-8 and Fas-associated via death domain (FADD) in HTLV-I-infected cells. Mutational studies revealed that A20 supports the growth of HTLV-I-infected cells independent of its catalytic functions and that the zinc-finger domains are required for the interaction with and regulation of caspases. These results indicate a pivotal role for A20 in the survival of HTLV-I-infected cells and implicate A20 as a potential therapeutic target in ATL.
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Affiliation(s)
- Y Saitoh
- Department of Molecular Virology, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - A Hamano
- Department of Molecular Virology, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - K Mochida
- Department of Molecular Virology, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - A Kakeya
- Department of Molecular Virology, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - M Uno
- Department of Molecular Virology, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo, Japan.,Department of Comprehensive Reproductive Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - E Tsuruyama
- Department of Molecular Virology, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - H Ichikawa
- Department of Molecular Virology, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - F Tokunaga
- Laboratory of Molecular Cell Biology, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Gunma, Japan
| | - A Utsunomiya
- Department of Hematology, Imamura Bun-in Hospital, Kagoshima, Japan
| | - T Watanabe
- Department of Medical Genome Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - S Yamaoka
- Department of Molecular Virology, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo, Japan
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