1
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Song X, Hu R, Chen Y, Xiao M, Zhang H, Wu S, Lu Q. The structure of TRAF7 coiled-coil trimer provides insight into its function in zebrafish embryonic development. J Mol Cell Biol 2024; 16:mjad083. [PMID: 38178633 PMCID: PMC11216086 DOI: 10.1093/jmcb/mjad083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 11/28/2023] [Accepted: 01/03/2024] [Indexed: 01/06/2024] Open
Abstract
TRAF7 serves as a crucial intracellular adaptor and E3 ubiquitin ligase involved in signal transduction pathways, contributing to immune responses, tumor progression, and embryonic development. Somatic mutations within the coiled-coil (CC) domain and WD40 repeat domain of TRAF7 could cause brain tumors, while germline pathogenic mutations contribute to severe developmental abnormalities. However, the precise molecular mechanism underlying TRAF7 involvement in embryonic development remains unclear. In this study, we employed zebrafish as an in vivo model system. TRAF7 knock down caused defects in zebrafish embryonic development. We determined the crystal structure of TRAF7 CC domain at 3.3 Å resolution and found that the CC region trimerization was essential for TRAF7 functionality during zebrafish embryonic development. Additionally, disease-causing mutations in TRAF7 CC region could impair the trimer formation, consequently impacting early embryonic development of zebrafish. Therefore, our study sheds light on the molecular mechanism of TRAF7 CC trimer formation and its pivotal role in embryonic development.
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Affiliation(s)
- Xiaozhen Song
- Molecular Diagnostic Laboratory, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200040, China
| | - Ruixing Hu
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200030, China
| | - Yi Chen
- Laboratory of Development and Diseases and State Key Laboratory for Medical Genomics, Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Man Xiao
- Molecular Diagnostic Laboratory, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200040, China
| | - Hong Zhang
- Molecular Diagnostic Laboratory, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200040, China
| | - Shengnan Wu
- Molecular Diagnostic Laboratory, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200040, China
| | - Qing Lu
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200030, China
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2
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Bradford STJ, Wu H, Kirita Y, Chen C, Malvin NP, Yoshimura Y, Muto Y, Humphreys BD. TNIK depletion induces inflammation and apoptosis in injured renal proximal tubule epithelial cells. Am J Physiol Renal Physiol 2024; 326:F827-F838. [PMID: 38482555 DOI: 10.1152/ajprenal.00262.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 03/05/2024] [Accepted: 03/05/2024] [Indexed: 04/12/2024] Open
Abstract
In the aftermath of acute kidney injury (AKI), surviving proximal tubule epithelia repopulate injured tubules to promote repair. However, a portion of cells fail to repair [termed failed-repair proximal tubule cells (FR-PTCs)] and exert ongoing proinflammatory and profibrotic effects. To better understand the molecular drivers of the FR-PTC state, we reanalyzed a mouse ischemia-reperfusion injury single-nucleus RNA-sequencing (snRNA-seq) atlas to identify Traf2 and Nck interacting kinase (Tnik) to be exclusively expressed in FR-PTCs but not in healthy or acutely injured proximal tubules after AKI (2 and 6 wk) in mice. We confirmed expression of Tnik protein in injured mouse and human tissues by immunofluorescence. Then, to determine the functional role of Tnik in FR-PTCs, we depleted TNIK with siRNA in two human renal proximal tubule epithelial cell lines (primary and immortalized hRPTECs) and analyzed each by bulk RNA-sequencing. Pathway analysis revealed significant upregulation of inflammatory signaling pathways, whereas pathways associated with differentiated proximal tubules such as organic acid transport were significantly downregulated. TNIK gene knockdown drove reduced cell viability and increased apoptosis, including differentially expressed poly(ADP-ribose) polymerase (PARP) family members, cleaved PARP-1 fragments, and increased annexin V binding to phosphatidylserine. Together, these results indicate that Tnik upregulation in FR-PTCs acts in a compensatory fashion to suppress inflammation and promote proximal tubule epithelial cell survival after injury. Modulating TNIK activity may represent a prorepair therapeutic strategy after AKI.NEW & NOTEWORTHY The molecular drivers of successful and failed repair in the proximal tubule after acute kidney injury (AKI) are incompletely understood. We identified Traf2 and Nck interacting kinase (Tnik) to be exclusively expressed in failed-repair proximal tubule cells after AKI. We tested the effect of siTNIK depletion in two proximal tubule cell lines followed by bulk RNA-sequencing analysis. Our results indicate that TNIK acts to suppress inflammatory signaling and apoptosis in injured renal proximal tubule epithelial cells to promote cell survival.
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Affiliation(s)
- Shayna T J Bradford
- Division of Nephrology, Department of Medicine, Washington University in St. Louis School of Medicine, St. Louis, Missouri, United States
| | - Haojia Wu
- Division of Nephrology, Department of Medicine, Washington University in St. Louis School of Medicine, St. Louis, Missouri, United States
| | - Yuhei Kirita
- Department of Nephrology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Changfeng Chen
- Division of Nephrology, Department of Medicine, Washington University in St. Louis School of Medicine, St. Louis, Missouri, United States
| | - Nicole P Malvin
- Division of Nephrology, Department of Medicine, Washington University in St. Louis School of Medicine, St. Louis, Missouri, United States
| | - Yasuhiro Yoshimura
- Division of Nephrology, Department of Medicine, Washington University in St. Louis School of Medicine, St. Louis, Missouri, United States
| | - Yoshiharu Muto
- Division of Nephrology, Department of Medicine, Washington University in St. Louis School of Medicine, St. Louis, Missouri, United States
| | - Benjamin D Humphreys
- Division of Nephrology, Department of Medicine, Washington University in St. Louis School of Medicine, St. Louis, Missouri, United States
- Department of Developmental Biology, Washington University in St. Louis School of Medicine, St. Louis, Missouri, United States
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3
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Jang H, Kim S, Kim DY, Han JH, Park HH. TRAF1 from a Structural Perspective. Biomolecules 2024; 14:510. [PMID: 38785916 PMCID: PMC11117997 DOI: 10.3390/biom14050510] [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: 03/27/2024] [Revised: 04/13/2024] [Accepted: 04/22/2024] [Indexed: 05/25/2024] Open
Abstract
Tumor necrosis factor receptor-associated factor (TRAF) proteins play pivotal roles in a multitude of cellular signaling pathways, encompassing immune response, cell fate determination, development, and thrombosis. Their involvement in these processes hinges largely on their ability to interact directly with diverse receptors via the TRAF domain. Given the limited binding interface, understanding how specific TRAF domains engage with various receptors and how structurally similar binding interfaces of TRAF family members adapt their distinct binding partners has been the subject of extensive structural investigations over several decades. This review presents an in-depth exploration of the current insights into the structural and molecular diversity exhibited by the TRAF domain and TRAF-binding motifs across a range of receptors, with a specific focus on TRAF1.
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Affiliation(s)
| | | | | | | | - Hyun Ho Park
- College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea; (H.J.); (S.K.); (D.Y.K.); (J.H.H.)
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4
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Nikonorova IA, desRanleau E, Jacobs KC, Saul J, Walsh JD, Wang J, Barr MM. Polycystins recruit cargo to distinct ciliary extracellular vesicle subtypes. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.17.588758. [PMID: 38659811 PMCID: PMC11042387 DOI: 10.1101/2024.04.17.588758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Therapeutic use of tiny extracellular vesicles (EVs) requires understanding cargo loading mechanisms. Here, we used a modular proximity label approach to identify EV cargo associated with the transient potential channel (TRP) polycystin PKD-2 of C. elegans. Polycystins are conserved receptor-TRP channel proteins affecting cilium function; dysfunction causes polycystic kidney disease in humans and mating deficits in C. elegans. Polycystin-2 EV localization is conserved from algae to humans, hinting at an ancient and unknown function. We discovered that polycystins associate with and direct specific cargo to EVs: channel-like PACL-1, dorsal and ventral membrane C-type lectins PAMLs, and conserved tumor necrosis-associated factor (TRAF) signaling adaptors TRF-1 and TRF-2. Loading of these components relied on polycystin-1 LOV-1. Our modular EV-TurboID approach can be applied in both cell- and tissue-specific manners to define the composition of distinct EV subtypes, addressing a major challenge of the EV field.
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Affiliation(s)
- Inna A. Nikonorova
- Department of Genetics and Human Genetics Institute of New Jersey, Rutgers, The State University of New Jersey; Piscataway, New Jersey 08854, USA
| | - Elizabeth desRanleau
- Department of Genetics and Human Genetics Institute of New Jersey, Rutgers, The State University of New Jersey; Piscataway, New Jersey 08854, USA
| | - Katherine C. Jacobs
- Department of Genetics and Human Genetics Institute of New Jersey, Rutgers, The State University of New Jersey; Piscataway, New Jersey 08854, USA
| | - Joshua Saul
- Department of Genetics and Human Genetics Institute of New Jersey, Rutgers, The State University of New Jersey; Piscataway, New Jersey 08854, USA
| | - Jonathon D. Walsh
- Department of Genetics and Human Genetics Institute of New Jersey, Rutgers, The State University of New Jersey; Piscataway, New Jersey 08854, USA
| | - Juan Wang
- Department of Genetics and Human Genetics Institute of New Jersey, Rutgers, The State University of New Jersey; Piscataway, New Jersey 08854, USA
| | - Maureen M. Barr
- Department of Genetics and Human Genetics Institute of New Jersey, Rutgers, The State University of New Jersey; Piscataway, New Jersey 08854, USA
- Lead contact
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5
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Kim KH, Han JY, Park J, Cho JS. The First Korean Case with Cardiac, Facial, and Digital Anomalies with Developmental Delay Caused by De Novo TRAF7 p.Arg655Gln Variant. Int J Mol Sci 2024; 25:3701. [PMID: 38612512 PMCID: PMC11011995 DOI: 10.3390/ijms25073701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 03/11/2024] [Accepted: 03/21/2024] [Indexed: 04/14/2024] Open
Abstract
TRAF7-related disorders represent some of the rarest inherited disorders, exhibiting clinical features that overlap with cardiac, facial, and digital anomalies with developmental delay (CAFDADD) syndrome, as well as blepharophimosis-mental retardation syndrome (BMRS). A 36-year-old male, presenting with total blindness, blepharophimosis, and intellectual disability, was admitted for the assessment of resting dyspnea several months previously. He had a history of being diagnosed with obstructive sleep apnea (OSA). Transesophageal and transthoracic echocardiography unveiled right ventricular dilatation without significant pulmonary hypertension, bicuspid aortic valve with aortic root aneurysm, and aortic regurgitation in the proband. Sanger sequencing identified a de novo TRAF7 variant (c.1964G>A; p.Arg655Gln). Subsequently, aortic root replacement using the Bentall procedure was performed. However, despite the surgery, he continued to experience dyspnea. Upon re-evaluating OSA with polysomnography, it was discovered that continuous positive airway pressure support alleviated his symptoms. The underlying cause of his symptoms was attributed to OSA, likely exacerbated by the vertebral anomaly and short neck associated with CAFDADD syndrome. Clinicians should be attentive to the symptoms associated with OSA as it is a potentially serious medical condition in patients with TRAF7 variants.
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Affiliation(s)
- Kyung Hee Kim
- Division of Cardiology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea;
| | - Ji Yoon Han
- Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea;
| | - Joonhong Park
- Department of Laboratory Medicine, Jeonbuk National University Medical School and Hospital, Jeonju 54907, Republic of Korea;
- Research Institute of Clinical Medicine of Jeonbuk National University, Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju 54907, Republic of Korea
| | - Jung Sun Cho
- Division of Cardiology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea;
- Catholic Research Institute for Intractable Cardiovascular Disease, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
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6
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Ritmeester-Loy SA, Draper IH, Bueter EC, Lautz JD, Zhang-Wong Y, Gustafson JA, Wilson AL, Lin C, Gafken PR, Jensen MC, Orentas R, Smith SEP. Differential protein-protein interactions underlie signaling mediated by the TCR and a 4-1BB domain-containing CAR. Sci Signal 2024; 17:eadd4671. [PMID: 38442200 PMCID: PMC10986860 DOI: 10.1126/scisignal.add4671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 01/09/2024] [Indexed: 03/07/2024]
Abstract
Cells rely on activity-dependent protein-protein interactions to convey biological signals. For chimeric antigen receptor (CAR) T cells containing a 4-1BB costimulatory domain, receptor engagement is thought to stimulate the formation of protein complexes similar to those stimulated by T cell receptor (TCR)-mediated signaling, but the number and type of protein interaction-mediating binding domains differ between CARs and TCRs. Here, we performed coimmunoprecipitation mass spectrometry analysis of a second-generation, CD19-directed 4-1BB:ζ CAR (referred to as bbζCAR) and identified 128 proteins that increased their coassociation after target engagement. We compared activity-induced TCR and CAR signalosomes by quantitative multiplex coimmunoprecipitation and showed that bbζCAR engagement led to the activation of two modules of protein interactions, one similar to TCR signaling that was more weakly engaged by bbζCAR as compared with the TCR and one composed of TRAF signaling complexes that was not engaged by the TCR. Batch-to-batch and interindividual variations in production of the cytokine IL-2 correlated with differences in the magnitude of protein network activation. Future CAR T cell manufacturing protocols could measure, and eventually control, biological variation by monitoring these signalosome activation markers.
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Affiliation(s)
- Samuel A. Ritmeester-Loy
- Center for Integrative Brain Research, Seattle Children’s Research Institute, Seattle, WA 98101, USA
| | - Isabella H. Draper
- Center for Integrative Brain Research, Seattle Children’s Research Institute, Seattle, WA 98101, USA
| | - Eric C. Bueter
- Center for Integrative Brain Research, Seattle Children’s Research Institute, Seattle, WA 98101, USA
| | - Jonathan D Lautz
- Center for Integrative Brain Research, Seattle Children’s Research Institute, Seattle, WA 98101, USA
| | - Yue Zhang-Wong
- Ben Towne Center for Childhood Cancer Research, Seattle Children’s Research Institute, Seattle, WA 98101, USA
| | - Joshua A. Gustafson
- Ben Towne Center for Childhood Cancer Research, Seattle Children’s Research Institute, Seattle, WA 98101, USA
- Seattle Children’s Therapeutics, Seattle Children’s Research Institute, Seattle, WA 98101 USA
| | - Ashley L. Wilson
- Ben Towne Center for Childhood Cancer Research, Seattle Children’s Research Institute, Seattle, WA 98101, USA
- Seattle Children’s Therapeutics, Seattle Children’s Research Institute, Seattle, WA 98101 USA
| | - Chenwei Lin
- Proteomics and Metabolomics Facility, Fred Hutchinson Cancer Center, Seattle, WA 98101, USA
| | - Philip R. Gafken
- Proteomics and Metabolomics Facility, Fred Hutchinson Cancer Center, Seattle, WA 98101, USA
| | - Michael C. Jensen
- Ben Towne Center for Childhood Cancer Research, Seattle Children’s Research Institute, Seattle, WA 98101, USA
- Seattle Children’s Therapeutics, Seattle Children’s Research Institute, Seattle, WA 98101 USA
- Department of Pediatrics, University of Washington, Seattle, WA 98101, USA
| | - Rimas Orentas
- Ben Towne Center for Childhood Cancer Research, Seattle Children’s Research Institute, Seattle, WA 98101, USA
- Department of Pediatrics, University of Washington, Seattle, WA 98101, USA
| | - Stephen E. P. Smith
- Center for Integrative Brain Research, Seattle Children’s Research Institute, Seattle, WA 98101, USA
- Department of Pediatrics, University of Washington, Seattle, WA 98101, USA
- Graduate Program in Neuroscience, University of Washington, Seattle, WA 98101, USA
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7
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De Luca A, Faienza F, Fulci C, Nicolai E, Calligari P, Palumbo C, Caccuri AM. Molecular and cellular evidence of a direct interaction between the TRAF2 C-terminal domain and ganglioside GM1. Int J Biochem Cell Biol 2024; 167:106508. [PMID: 38142771 DOI: 10.1016/j.biocel.2023.106508] [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: 07/25/2023] [Revised: 11/30/2023] [Accepted: 12/20/2023] [Indexed: 12/26/2023]
Abstract
TNF receptor-associated factor 2 (TRAF2) is involved in different cellular processes including signal transduction and transcription regulation. We here provide evidence of a direct interaction between the TRAF domain of TRAF2 and the monosialotetrahexosylganglioside (GM1). Previously, we showed that the TRAF domain occurs mainly in a trimeric form in solution, but it can also exist as a stable monomer when in the nanomolar concentration range. Here, we report that the quaternary structure of the TRAF domain is also affected by pH changes, since a weakly acidic pH (5.5) favors the dissociation of the trimeric TRAF domain into stable monomers, as previously observed at neutral pH (7.6) with the diluted protein. The TRAF domain-GM1 binding was similar at pH 5.5 and 7.6, suggesting that GM1 interacts with both the trimeric and monomeric forms of the protein. However, only the monomeric protein appeared to cause membrane deformation and inward vesiculation in GM1-containing giant unilamellar vesicles (GUVs). The formation of complexes between GM1 and TRAF2, or its TRAF domain, was also observed in cultured human leukemic HAP1 cells expressing either the truncated TRAF domain or the endogenous full length TRAF2. The GM1-protein complexes were observed after treatment with tunicamycin and were more concentrated in cells undergoing apoptosis, a condition which is known to cause cytoplasm acidification. These findings open the avenue for future studies aimed at deciphering the physiopathological relevance of the TRAF domain-GM1 interaction.
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Affiliation(s)
| | - Fiorella Faienza
- Department of Chemical Sciences and Technologies, University of Tor Vergata, Rome, Italy
| | - Chiara Fulci
- Department of Chemical Sciences and Technologies, University of Tor Vergata, Rome, Italy
| | - Eleonora Nicolai
- Department of Experimental Medicine, University of Tor Vergata, Rome, Italy
| | - Paolo Calligari
- Department of Chemical Sciences and Technologies, University of Tor Vergata, Rome, Italy
| | - Camilla Palumbo
- Department of Clinical Sciences and Translational Medicine, University of Tor Vergata, Rome, Italy.
| | - Anna Maria Caccuri
- Department of Chemical Sciences and Technologies, University of Tor Vergata, Rome, Italy; The NAST Centre for Nanoscience and Nanotechnology and Innovative Instrumentation, University of Tor Vergata, Rome, Italy.
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8
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Li Y, Liu X, Fujinaga K, Gross JD, Frankel AD. Enhanced NF-κB activation via HIV-1 Tat-TRAF6 cross-talk. SCIENCE ADVANCES 2024; 10:eadi4162. [PMID: 38241362 PMCID: PMC10798561 DOI: 10.1126/sciadv.adi4162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 12/21/2023] [Indexed: 01/21/2024]
Abstract
The Tat proteins of HIV-1 and simian immunodeficiency virus (SIV) are essential for activating viral transcription. In addition, Tat stimulates nuclear factor κB (NF-κB) signaling pathways to regulate viral gene expression although its molecular mechanism is unclear. Here, we report that Tat directly activates NF-κB through the interaction with TRAF6, which is an essential upstream signaling molecule of the canonical NF-κB pathway. This interaction increases TRAF6 oligomerization and auto-ubiquitination, as well as the synthesis of K63-linked polyubiquitin chains to further activate the NF-κB pathway and HIV-1 transcription. Moreover, ectopic expression of TRAF6 significantly activates HIV-1 transcription, whereas TRAF6 knockdown inhibits transcription. Furthermore, Tat-mediated activation of NF-κB through TRAF6 is conserved among HIV-1, HIV-2, and SIV isolates. Our study uncovers yet another mechanism by which HIV-1 subverts host transcriptional pathways to enhance its own transcription.
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Affiliation(s)
- Yang Li
- Department of Biochemistry and Biophysics, University of California, San Francisco, CA 94158, USA
| | - Xi Liu
- Department of Pharmaceutical Chemistry, University of California, San Francisco, CA 94158, USA
| | - Koh Fujinaga
- Department of Medicine, University of California, San Francisco, CA 94143, USA
| | - John D. Gross
- Department of Pharmaceutical Chemistry, University of California, San Francisco, CA 94158, USA
| | - Alan D. Frankel
- Department of Biochemistry and Biophysics, University of California, San Francisco, CA 94158, USA
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9
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Giehler F, Ostertag MS, Sommermann T, Weidl D, Sterz KR, Kutz H, Moosmann A, Feller SM, Geerlof A, Biesinger B, Popowicz GM, Kirchmair J, Kieser A. Epstein-Barr virus-driven B cell lymphoma mediated by a direct LMP1-TRAF6 complex. Nat Commun 2024; 15:414. [PMID: 38195569 PMCID: PMC10776578 DOI: 10.1038/s41467-023-44455-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 12/14/2023] [Indexed: 01/11/2024] Open
Abstract
Epstein-Barr virus (EBV) latent membrane protein 1 (LMP1) drives viral B cell transformation and oncogenesis. LMP1's transforming activity depends on its C-terminal activation region 2 (CTAR2), which induces NF-κB and JNK by engaging TNF receptor-associated factor 6 (TRAF6). The mechanism of TRAF6 recruitment to LMP1 and its role in LMP1 signalling remains elusive. Here we demonstrate that TRAF6 interacts directly with a viral TRAF6 binding motif within CTAR2. Functional and NMR studies supported by molecular modeling provide insight into the architecture of the LMP1-TRAF6 complex, which differs from that of CD40-TRAF6. The direct recruitment of TRAF6 to LMP1 is essential for NF-κB activation by CTAR2 and the survival of LMP1-driven lymphoma. Disruption of the LMP1-TRAF6 complex by inhibitory peptides interferes with the survival of EBV-transformed B cells. In this work, we identify LMP1-TRAF6 as a critical virus-host interface and validate this interaction as a potential therapeutic target in EBV-associated cancer.
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Affiliation(s)
- Fabian Giehler
- Research Unit Signaling and Translation, Helmholtz Center Munich - German Research Center for Environmental Health, 85764, Neuherberg, Germany
- Research Unit Gene Vectors, Helmholtz Center Munich - German Research Center for Environmental Health, 81377, Munich, Germany
- German Center for Infection Research (DZIF), Partner Site Munich, Munich, Germany
| | - Michael S Ostertag
- Institute of Structural Biology, Helmholtz Center Munich - German Research Center for Environmental Health, 85764, Neuherberg, Germany
| | - Thomas Sommermann
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine, 13125, Berlin, Germany
| | - Daniel Weidl
- Institute of Clinical and Molecular Virology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, 91054, Erlangen, Germany
| | - Kai R Sterz
- Research Unit Gene Vectors, Helmholtz Center Munich - German Research Center for Environmental Health, 81377, Munich, Germany
| | - Helmut Kutz
- Research Unit Gene Vectors, Helmholtz Center Munich - German Research Center for Environmental Health, 81377, Munich, Germany
| | - Andreas Moosmann
- Research Unit Gene Vectors, Helmholtz Center Munich - German Research Center for Environmental Health, 81377, Munich, Germany
- German Center for Infection Research (DZIF), Partner Site Munich, Munich, Germany
- Department of Medicine III, University Hospital, Ludwig-Maximilians-University Munich, 81377, Munich, Germany
| | - Stephan M Feller
- Institute of Molecular Medicine, Martin-Luther-University Halle-Wittenberg, 06120, Halle, Germany
| | - Arie Geerlof
- Institute of Structural Biology, Helmholtz Center Munich - German Research Center for Environmental Health, 85764, Neuherberg, Germany
| | - Brigitte Biesinger
- Institute of Clinical and Molecular Virology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, 91054, Erlangen, Germany
| | - Grzegorz M Popowicz
- Institute of Structural Biology, Helmholtz Center Munich - German Research Center for Environmental Health, 85764, Neuherberg, Germany
| | - Johannes Kirchmair
- Universität Hamburg, Department of Informatics, Center for Bioinformatics (ZBH), 20146, Hamburg, Germany
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Chemistry, University of Vienna, 1090, Vienna, Austria
| | - Arnd Kieser
- Research Unit Signaling and Translation, Helmholtz Center Munich - German Research Center for Environmental Health, 85764, Neuherberg, Germany.
- Research Unit Gene Vectors, Helmholtz Center Munich - German Research Center for Environmental Health, 81377, Munich, Germany.
- German Center for Infection Research (DZIF), Partner Site Munich, Munich, Germany.
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10
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Zhou Z, Zheng K, Zhou S, Yang Y, Chen J, Jin X. E3 ubiquitin ligases in nasopharyngeal carcinoma and implications for therapies. J Mol Med (Berl) 2023; 101:1543-1565. [PMID: 37796337 DOI: 10.1007/s00109-023-02376-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 09/05/2023] [Accepted: 09/14/2023] [Indexed: 10/06/2023]
Abstract
Nasopharyngeal carcinoma (NPC) is one of the most common squamous cell carcinomas of the head and neck, and Epstein-Barr virus (EBV) infection is one of the pathogenic factors involved in the oncogenetic development and progression of NPC. E3 ligases, which are key members of the ubiquitin proteasome system (UPS), specifically recognize various oncogenic factors and tumor suppressors and contribute to determining their fate through ubiquitination. Several studies have demonstrated that E3 ligases are aberrantly expressed and mutated in NPC and that these changes are closely associated with the occurrence and progression of NPC. Herein, we aim to thoroughly review the specific action mechanisms by which E3 ligases participate in NPC signaling pathways and discuss their functional relationship with EBV. Moreover, we describe the current progress in and limitations for targeted therapies against E3 ligases in NPC. KEY MESSAGES: • E3 ubiquitin ligases, as members of the UPS system, determine the fate of their substrates and may act either as oncogenic or anti-tumorigenic factors in NPC. • Mutations or dysregulated expression of E3 ubiquitin ligases is closely related to the occurrence, development, and therapeutic sensitivity of NPC, as they play important roles in several signaling pathways affected by EBV infection. • As promising therapeutic targets, E3 ligases may open new avenues for treatment and for improving the prognosis of NPC patients.
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Affiliation(s)
- Zijian Zhou
- Department of Chemoradiotherapy, The Affiliated People's Hospital of Ningbo University, Ningbo, 315040, China
| | - Kaifeng Zheng
- Department of Chemoradiotherapy, The Affiliated People's Hospital of Ningbo University, Ningbo, 315040, China
| | - Shao Zhou
- Department of Otolaryngology-Head and Neck Surgery, The Affiliated People's Hospital of Ningbo University, Ningbo, 315040, China
| | - Youxiong Yang
- Department of Otolaryngology-Head and Neck Surgery, Ningbo Yinzhou Second Hospital, Ningbo, 315199, China.
| | - Jun Chen
- Department of Chemoradiotherapy, The Affiliated People's Hospital of Ningbo University, Ningbo, 315040, China.
| | - Xiaofeng Jin
- Department of Chemoradiotherapy, The Affiliated People's Hospital of Ningbo University, Ningbo, 315040, China.
- Department of Biochemistry and Molecular Biology, and Zhejiang Key Laboratory of Pathophysiology, Health Science Center of Ningbo University, Ningbo, 315211, China.
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11
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Busscher BM, Befekadu HB, Liu Z, Xiao TS. SARS-CoV-2 ORF3a-Mediated NF-κB Activation Is Not Dependent on TRAF-Binding Sequence. Viruses 2023; 15:2229. [PMID: 38005906 PMCID: PMC10675646 DOI: 10.3390/v15112229] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/31/2023] [Accepted: 11/04/2023] [Indexed: 11/26/2023] Open
Abstract
Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) has caused a global pandemic of Coronavirus Disease 2019 (COVID-19). Excessive inflammation is a hallmark of severe COVID-19, and several proteins encoded in the SARS-CoV-2 genome are capable of stimulating inflammatory pathways. Among these, the accessory protein open reading frame 3a (ORF3a) has been implicated in COVID-19 pathology. Here we investigated the roles of ORF3a in binding to TNF receptor-associated factor (TRAF) proteins and inducing nuclear factor kappa B (NF-κB) activation. X-ray crystallography and a fluorescence polarization assay revealed low-affinity binding between an ORF3a N-terminal peptide and TRAFs, and a dual-luciferase assay demonstrated NF-κB activation by ORF3a. Nonetheless, mutation of the N-terminal TRAF-binding sequence PIQAS in ORF3a did not significantly diminish NF-κB activation in our assay. Our results thus suggest that the SARS-CoV-2 protein may activate NF-κB through alternative mechanisms.
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Affiliation(s)
- Brianna M. Busscher
- Department of Pathology, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA; (B.M.B.); (Z.L.)
| | - Henock B. Befekadu
- Department of Physiology and Biophysics, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA;
| | - Zhonghua Liu
- Department of Pathology, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA; (B.M.B.); (Z.L.)
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Tsan Sam Xiao
- Department of Pathology, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA; (B.M.B.); (Z.L.)
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12
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Jeong Y, Oh AR, Jung YH, Gi H, Kim YU, Kim K. Targeting E3 ubiquitin ligases and their adaptors as a therapeutic strategy for metabolic diseases. Exp Mol Med 2023; 55:2097-2104. [PMID: 37779139 PMCID: PMC10618535 DOI: 10.1038/s12276-023-01087-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 06/23/2023] [Accepted: 07/06/2023] [Indexed: 10/03/2023] Open
Abstract
Posttranslational modification of proteins via ubiquitination determines their activation, translocation, dysregulation, or degradation. This process targets a large number of cellular proteins, affecting all biological pathways involved in the cell cycle, development, growth, and differentiation. Thus, aberrant regulation of ubiquitination is likely associated with several diseases, including various types of metabolic diseases. Among the ubiquitin enzymes, E3 ubiquitin ligases are regarded as the most influential ubiquitin enzymes due to their ability to selectively bind and recruit target substrates for ubiquitination. Continued research on the regulatory mechanisms of E3 ligases and their adaptors in metabolic diseases will further stimulate the discovery of new targets and accelerate the development of therapeutic options for metabolic diseases. In this review, based on recent discoveries, we summarize new insights into the roles of E3 ubiquitin ligases and their adaptors in the pathogenesis of metabolic diseases by highlighting recent evidence obtained in both human and animal model studies.
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Affiliation(s)
- Yelin Jeong
- Department of Biomedical Sciences, College of Medicine, Inha University, Incheon, Republic of Korea
- Program in Biomedical Science & Engineering, Inha University, Incheon, Republic of Korea
- Research Center for Controlling Intercellular Communication (RCIC), College of Medicine, Inha University, Incheon, 22212, Republic of Korea
| | - Ah-Reum Oh
- Department of Biomedical Sciences, College of Medicine, Inha University, Incheon, Republic of Korea
- Program in Biomedical Science & Engineering, Inha University, Incheon, Republic of Korea
- Research Center for Controlling Intercellular Communication (RCIC), College of Medicine, Inha University, Incheon, 22212, Republic of Korea
| | - Young Hoon Jung
- Department of Biomedical Sciences, College of Medicine, Inha University, Incheon, Republic of Korea
- Program in Biomedical Science & Engineering, Inha University, Incheon, Republic of Korea
- Research Center for Controlling Intercellular Communication (RCIC), College of Medicine, Inha University, Incheon, 22212, Republic of Korea
| | - HyunJoon Gi
- Department of Biomedical Sciences, College of Medicine, Inha University, Incheon, Republic of Korea
- Program in Biomedical Science & Engineering, Inha University, Incheon, Republic of Korea
- Research Center for Controlling Intercellular Communication (RCIC), College of Medicine, Inha University, Incheon, 22212, Republic of Korea
| | - Young Un Kim
- Department of Biomedical Sciences, College of Medicine, Inha University, Incheon, Republic of Korea
- Program in Biomedical Science & Engineering, Inha University, Incheon, Republic of Korea
- Research Center for Controlling Intercellular Communication (RCIC), College of Medicine, Inha University, Incheon, 22212, Republic of Korea
| | - KyeongJin Kim
- Department of Biomedical Sciences, College of Medicine, Inha University, Incheon, Republic of Korea.
- Program in Biomedical Science & Engineering, Inha University, Incheon, Republic of Korea.
- Research Center for Controlling Intercellular Communication (RCIC), College of Medicine, Inha University, Incheon, 22212, Republic of Korea.
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13
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Williams MD, Chen AT, Stone MR, Guo L, Belmont BJ, Turk R, Bogard N, Kearns N, Young M, Daines B, Darnell M. TRAFfic signals: High-throughput CAR discovery in NK cells reveals novel TRAF-binding endodomains that drive enhanced persistence and cytotoxicity. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.02.551530. [PMID: 37577560 PMCID: PMC10418287 DOI: 10.1101/2023.08.02.551530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Natural killer (NK) cells are a promising alternative therapeutic platform to CAR T cells given their favorable safety profile and potent killing ability. However, CAR NK cells suffer from limited persistence in vivo , which is, in part, thought to be the consequence of limited cytokine signaling. To address this challenge, we developed an innovative high-throughput screening strategy to identify CAR endodomains that could drive enhanced persistence while maintaining potent cytotoxicity. We uncovered a family of TRAF-binding endodomains that outperform benchmarks in primary NK cells along dimensions of persistence and cytotoxicity, even in low IL-2 conditions. This work highlights the importance of cell-type-specific cell therapy engineering and unlocks a wide range of high-throughput molecular engineering avenues in NK cells.
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14
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Gu W, Zhang J, Li Q, Zhang Y, Lin X, Wu B, Yin Q, Sun J, Lu Y, Sun X, Jia C, Li C, Zhang Y, Wang M, Yin X, Wang S, Xu J, Wang R, Zhu S, Cheng S, Chen S, Liu L, Zhu L, Yan C, Yi C, Li X, Lian Q, Lin G, Ling Z, Ma L, Zhou M, Xiao K, Wei H, Hu R, Zhou W, Ye L, Wang H, Li J, Sun B. The TRIM37 variants in Mulibrey nanism patients paralyze follicular helper T cell differentiation. Cell Discov 2023; 9:82. [PMID: 37528081 PMCID: PMC10394018 DOI: 10.1038/s41421-023-00561-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 04/11/2023] [Indexed: 08/03/2023] Open
Abstract
The Mulibrey (Muscle-liver-brain-eye) nanism caused by loss-of-function variants in TRIM37 gene is an autosomal recessive disorder characterized by severe growth failure and constrictive pericarditis. These patients also suffer from severe respiratory infections, co-incident with an increased mortality rate. Here, we revealed that TRIM37 variants were associated with recurrent infection. Trim37 FINmajor (a representative variant of Mulibrey nanism patients) and Trim37 knockout mice were susceptible to influenza virus infection. These mice showed defects in follicular helper T (TFH) cell development and antibody production. The effects of Trim37 on TFH cell differentiation relied on its E3 ligase activity catalyzing the K27/29-linked polyubiquitination of Bcl6 and its MATH domain-mediated interactions with Bcl6, thereby protecting Bcl6 from proteasome-mediated degradation. Collectively, these findings highlight the importance of the Trim37-Bcl6 axis in controlling the development of TFH cells and the production of high-affinity antibodies, and further unveil the immunologic mechanism underlying recurrent respiratory infection in Mulibrey nanism.
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Affiliation(s)
- Wangpeng Gu
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Jia Zhang
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Qing Li
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Yaguang Zhang
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China.
| | - Xuan Lin
- Institute of Pasteur of Shanghai, Shanghai, China
- School of Life Science and Technology, Shanghai Tech University, Shanghai, China
| | - Bingbing Wu
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Qi Yin
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Jinqiao Sun
- Department of Allergy and Clinical Immunology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Yulan Lu
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Xiaoyu Sun
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Caiwei Jia
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Chuanyin Li
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Yu Zhang
- Institute of Pasteur of Shanghai, Shanghai, China
| | - Meng Wang
- Institute of Pasteur of Shanghai, Shanghai, China
| | - Xidi Yin
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Su Wang
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Jiefang Xu
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Ran Wang
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Songling Zhu
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Shipeng Cheng
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Shuangfeng Chen
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Lian Liu
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Lin Zhu
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Chenghua Yan
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Chunyan Yi
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Xuezhen Li
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Qiaoshi Lian
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Guomei Lin
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Zhiyang Ling
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Liyan Ma
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Min Zhou
- Department of Ophthalmology, Eye and ENT Hospital of Fudan University, Shanghai, China
| | - Kuanlin Xiao
- Department of Ophthalmology, Eye and ENT Hospital of Fudan University, Shanghai, China
| | - Haiming Wei
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Ronggui Hu
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China.
| | - Wenhao Zhou
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China.
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China.
| | - Lilin Ye
- Institute of Immunology, Third Military Medical University, Chongqing, China.
- Beijing Changping Laboratory, Beijing, China.
| | - Haikun Wang
- Institute of Pasteur of Shanghai, Shanghai, China.
| | - Jinsong Li
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China.
| | - Bing Sun
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China.
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15
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Davar D, Zappasodi R. Targeting GITR in cancer immunotherapy - there is no perfect knowledge. Oncotarget 2023; 14:614-621. [PMID: 37335294 PMCID: PMC10278658 DOI: 10.18632/oncotarget.28461] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 06/05/2023] [Indexed: 06/21/2023] Open
Abstract
Glucocorticoid-induced TNFR-related protein (GITR) belongs to the TNFR superfamily (TNFRSF) and stimulates both the acquired and innate immunity. GITR is broadly expressed on immune cells, particularly regulatory T cells (Tregs) and natural killer (NK) cells. Given its potential to promote T effector function and impede Treg immune suppression, GITR is an attractive target for cancer immunotherapy. Preclinically, GITR agonists have demonstrated potent anti-tumor efficacy singly and in combination with a variety of agents, including PD-1 blockade. Multiple GITR agonists have been advanced into the clinic, although the experience with these agents has been disappointing. Recent mechanistic insights into the roles of antibody structure, valency, and Fc functionality in mediating anti-tumor efficacy may explain some of the apparent inconsistency or discordance between preclinical data and observed clinical efficacy.
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Affiliation(s)
- Diwakar Davar
- Hillman Cancer Center, University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA 15232, USA
- University of Pittsburgh, Pittsburgh, PA 15232, USA
| | - Roberta Zappasodi
- Division of Hematology and Medical Oncology, Department of Medicine, Weill Cornell Medical College, NY 10065, USA
- Immunology and Microbial Pathogenesis Program, Weill Cornell Graduate School of Medical Sciences, NY 10065, USA
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16
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Lee CS, Hwang G, Nam YW, Hwang CH, Song J. IKK-mediated TRAF6 and RIPK1 interaction stifles cell death complex assembly leading to the suppression of TNF-α-induced cell death. Cell Death Differ 2023; 30:1575-1584. [PMID: 37085671 PMCID: PMC10244383 DOI: 10.1038/s41418-023-01161-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 04/23/2023] Open
Abstract
Tumor necrosis factor α (TNF-α) is a pro-inflammatory cytokine capable of inducing extrinsic apoptosis and necroptosis. Tumor necrosis factor receptor-associated factor 6 (TRAF6), an E3 ligase, is a member of the TRAF family of proteins, which mediates inflammatory signals by activating nuclear factor kappa B (NFкB) and mitogen-activated protein kinase (MAPK). Although the functions of TRAF6 have been identified, its role in TNF-α-induced cell death remains poorly understood. Here, we report that TRAF6 is a negative modulator of TNF-α-induced cell death but does not affect TNF-α-induced NFκB activation. TRAF6 deficiency accelerates both TNF-α-induced apoptosis and necroptosis; however, the acceleration can be reversed by reconstituting TRAF6 or TRAF6C70A, suggesting that E3 ligase activity is not required for this activity. Mechanistically, TRAF6 directly interacts with RIPK1 during TNF-α-induced cell death signaling, which prevents RIPK1 from interacting with components of the cell death complex such as itself, FADD or RIPK3. These processes suppress the assembly of the death complex. Notably, IKK was required for TRAF6 to interact with RIPK1. In vivo, Traf6-/- embryos exhibited higher levels of cell death in the liver but could be rescued by the simultaneous knockout of Tnf. Finally, TRAF6 knockdown xenografts were highly sensitive to necroptotic stimuli. We concluded that TRAF6 suppresses TNF-α-induced cell death in coordination with IKK complexes in vivo and in vitro by suppressing the assembly of cell death complex.
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Affiliation(s)
- Choong-Sil Lee
- Integrated OMICS for Biomedical Science, Yonsei University, Seoul, 03722, Korea
| | - Gyuho Hwang
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Korea
| | - Young Woo Nam
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Korea
| | - Chi Hyun Hwang
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Korea
| | - Jaewhan Song
- Integrated OMICS for Biomedical Science, Yonsei University, Seoul, 03722, Korea.
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Korea.
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17
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Zhen H, Huang M, Zheng M, Gao L, Guo Z, Pang Q, Jin G, Zhou Z. WTAP regulates stem cells via TRAF6 to maintain planarian homeostasis and regeneration. Int J Biol Macromol 2023:124932. [PMID: 37268082 DOI: 10.1016/j.ijbiomac.2023.124932] [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: 12/12/2022] [Revised: 04/23/2023] [Accepted: 05/06/2023] [Indexed: 06/04/2023]
Abstract
WTAP, a highly conserved Wilms' tumor 1 interacting protein, is involved in a variety of biological processes. However, functional studies of WTAP in planarians have not been reported. In this study, we examined the spatiotemporal expression pattern of planarian DjWTAP and investigated its functions in planarians regeneration and homeostasis. Knocking-down DjWTAP resulted in severe morphological defects leading to lethality within 20 days. Silencing DjWTAP promoted the proliferation of PiwiA+ cells but impaired the lineage differentiation of epidermal, neural, digestive, and excretory cell types, suggesting a critical role for DjWTAP in stem cell self-renewal and differentiation in planarian. To further investigate the mechanisms underlying the defective differentiation, RNA-seq was employed to determine the transcriptomic alterations upon DjWTAP RNA interference. Histone 4 (H4), Histone-lysine N-methyltransferase-SETMAR like, and TNF receptor-associated factor 6 (TRAF6), were significantly upregulated in response to DjWTAP RNAi. Knocking-down TRAF6 largely rescued the defective tissue homeostasis and regeneration resulted from DjWTAP knockdown in planarians, suggesting that DjWTAP maintains planarian regeneration and homeostasis via TRAF6.
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Affiliation(s)
- Hui Zhen
- Guangdong Cardiovascular Institute, Medical Research Center, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Mujie Huang
- Guangdong Cardiovascular Institute, Medical Research Center, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Mingyue Zheng
- Guangdong Cardiovascular Institute, Medical Research Center, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Lili Gao
- Laboratory of Developmental and Evolutionary Biology, Shandong University of Technology, Zibo, China
| | - Zepeng Guo
- Guangdong Cardiovascular Institute, Medical Research Center, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Qiuxiang Pang
- Laboratory of Developmental and Evolutionary Biology, Shandong University of Technology, Zibo, China.
| | - Guoxiang Jin
- Guangdong Cardiovascular Institute, Medical Research Center, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China; Guangdong Provincial Geriatrics Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510080, China.
| | - Zhongjun Zhou
- Guangdong Cardiovascular Institute, Medical Research Center, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China; School of Biomedical Sciences, The University of Hong Kong, Hong Kong; Reproductive Medicine Center, The University of Hong Kong-Shenzhen Hospital, Shenzhen, CHINA.
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18
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Dai Y, Ma S, Guo Y, Zhang X, Liu D, Gao Y, Zhai C, Chen Q, Xiao S, Zhang Z, Yu L. Evolution and Expression of the Meprin and TRAF Homology Domain-Containing Gene Family in Solanaceae. Int J Mol Sci 2023; 24:ijms24108782. [PMID: 37240124 DOI: 10.3390/ijms24108782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 05/01/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023] Open
Abstract
Meprin and TRAF homology (MATH)-domain-containing proteins are pivotal in modulating plant development and environmental stress responses. To date, members of the MATH gene family have been identified only in a few plant species, including Arabidopsis thaliana, Brassica rapa, maize, and rice, and the functions of this gene family in other economically important crops, especially the Solanaceae family, remain unclear. The present study identified and analyzed 58 MATH genes from three Solanaceae species, including tomato (Solanum lycopersicum), potato (Solanum tuberosum), and pepper (Capsicum annuum). Phylogenetic analysis and domain organization classified these MATH genes into four groups, consistent with those based on motif organization and gene structure. Synteny analysis found that segmental and tandem duplication might have contributed to MATH gene expansion in the tomato and the potato, respectively. Collinearity analysis revealed high conservation among Solanaceae MATH genes. Further cis-regulatory element prediction and gene expression analysis showed that Solanaceae MATH genes play essential roles during development and stress response. These findings provide a theoretical basis for other functional studies on Solanaceae MATH genes.
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Affiliation(s)
- Yangshuo Dai
- State Key Laboratory of Biocontrol, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
- Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Sirui Ma
- State Key Laboratory of Biocontrol, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Yixian Guo
- State Key Laboratory of Biocontrol, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Xue Zhang
- State Key Laboratory of Biocontrol, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Di Liu
- State Key Laboratory of Biocontrol, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Yan Gao
- Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Chendong Zhai
- Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Qinfang Chen
- State Key Laboratory of Biocontrol, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Shi Xiao
- State Key Laboratory of Biocontrol, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Zhenfei Zhang
- Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Lujun Yu
- State Key Laboratory of Biocontrol, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
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19
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Ao K, Rohmann PFW, Huang S, Li L, Lipka V, Chen S, Wiermer M, Li X. Puncta-localized TRAF domain protein TC1b contributes to the autoimmunity of snc1. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 114:591-612. [PMID: 36799433 DOI: 10.1111/tpj.16155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 02/07/2023] [Indexed: 05/04/2023]
Abstract
Immune receptors play important roles in the perception of pathogens and initiation of immune responses in both plants and animals. Intracellular nucleotide-binding domain leucine-rich repeat (NLR)-type receptors constitute a major class of receptors in vascular plants. In the Arabidopsis thaliana mutant suppressor of npr1-1, constitutive 1 (snc1), a gain-of-function mutation in the NLR gene SNC1 leads to SNC1 overaccumulation and constitutive activation of defense responses. From a CRISPR/Cas9-based reverse genetics screen in the snc1 autoimmune background, we identified that mutations in TRAF CANDIDATE 1b (TC1b), a gene encoding a protein with four tumor necrosis factor receptor-associated factor (TRAF) domains, can suppress snc1 phenotypes. TC1b does not appear to be a general immune regulator as it is not required for defense mediated by other tested immune receptors. TC1b also does not physically associate with SNC1, affect SNC1 accumulation, or affect signaling of the downstream helper NLRs represented by ACTIVATED DISEASE RESISTANCE PROTEIN 1-L2 (ADR1-L2), suggesting that TC1b impacts snc1 autoimmunity in a unique way. TC1b can form oligomers and localizes to punctate structures of unknown function. The puncta localization of TC1b strictly requires its coiled-coil (CC) domain, whereas the functionality of TC1b requires the four TRAF domains in addition to the CC. Overall, we uncovered the TRAF domain protein TC1b as a novel positive contributor to plant immunity.
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Affiliation(s)
- Kevin Ao
- Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
- Department of Botany, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - Philipp F W Rohmann
- Molecular Biology of Plant-Microbe Interactions Research Group, Albrecht-von-Haller-Institute for Plant Sciences, University of Goettingen, D-37077, Goettingen, Germany
- Biochemistry of Plant-Microbe Interactions, Dahlem Centre of Plant Sciences, Institute of Biology, Freie Universität Berlin, 14195, Berlin, Germany
| | - Shuai Huang
- Department of Molecular Genetics, College of Arts and Sciences, Ohio State University, Columbus, Ohio, 43210, USA
| | - Lin Li
- National Institute of Biological Sciences, Beijing, 102206, China
| | - Volker Lipka
- Department of Plant Cell Biology, Albrecht-von-Haller-Institute for Plant Sciences, University of Goettingen, D-37077, Goettingen, Germany
- Central Microscopy Facility of the Faculty of Biology and Psychology, University of Goettingen, D-37077, Goettingen, Germany
| | - She Chen
- National Institute of Biological Sciences, Beijing, 102206, China
| | - Marcel Wiermer
- Molecular Biology of Plant-Microbe Interactions Research Group, Albrecht-von-Haller-Institute for Plant Sciences, University of Goettingen, D-37077, Goettingen, Germany
- Biochemistry of Plant-Microbe Interactions, Dahlem Centre of Plant Sciences, Institute of Biology, Freie Universität Berlin, 14195, Berlin, Germany
| | - Xin Li
- Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
- Department of Botany, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
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20
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Liu L, Yin S, Gan W. TRAF6 Promotes PRMT5 Activity in a Ubiquitination-Dependent Manner. Cancers (Basel) 2023; 15:2501. [PMID: 37173967 PMCID: PMC10177089 DOI: 10.3390/cancers15092501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023] Open
Abstract
Protein arginine methyltransferase 5 (PRMT5) is the primary enzyme generating symmetric dimethylarginine (sDMA) on numerous substrates, through which it regulates many cellular processes, such as transcription and DNA repair. Aberrant expression and activation of PRMT5 is frequently observed in various human cancers and associated with poor prognosis and survival. However, the regulatory mechanisms of PRMT5 remain poorly understood. Here, we report that TRAF6 serves as an upstream E3 ubiquitin ligase to promote PRMT5 ubiquitination and activation. We find that TRAF6 catalyzes K63-linked ubiquitination of PRMT5 and interacts with PRMT5 in a TRAF6-binding-motif-dependent manner. Moreover, we identify six lysine residues located at the N-terminus as the primarily ubiquitinated sites. Disruption of TRAF6-mediated ubiquitination decreases PRMT5 methyltransferase activity towards H4R3 in part by impairing PRMT5 interaction with its co-factor MEP50. As a result, mutating the TRAF6-binding motifs or the six lysine residues significantly suppresses cell proliferation and tumor growth. Lastly, we show that TRAF6 inhibitor enhances cellular sensitivity to PRMT5 inhibitor. Therefore, our study reveals a critical regulatory mechanism of PRMT5 in cancers.
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Affiliation(s)
| | | | - Wenjian Gan
- Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC 29425, USA
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21
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Dhusia K, Su Z, Wu Y. Computational analyses of the interactome between TNF and TNFR superfamilies. Comput Biol Chem 2023; 103:107823. [PMID: 36682326 DOI: 10.1016/j.compbiolchem.2023.107823] [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: 09/06/2022] [Revised: 01/05/2023] [Accepted: 01/18/2023] [Indexed: 01/20/2023]
Abstract
Proteins in the tumor necrosis factor (TNF) superfamily (TNFSF) regulate diverse cellular processes by interacting with their receptors in the TNF receptor (TNFR) superfamily (TNFRSF). Ligands and receptors in these two superfamilies form a complicated network of interactions, in which the same ligand can bind to different receptors and the same receptor can be shared by different ligands. In order to study these interactions on a systematic level, a TNFSF-TNFRSF interactome was constructed in this study by searching the database which consists of both experimentally measured and computationally predicted protein-protein interactions (PPIs). The interactome contains a total number of 194 interactions between 18 TNFSF ligands and 29 TNFRSF receptors in human. We modeled the structure for each ligand-receptor interaction in the network. Their binding affinities were further computationally estimated based on modeled structures. Our computational outputs, which are all publicly accessible, serve as a valuable addition to the currently limited experimental resources to study TNF-mediated cell signaling.
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Affiliation(s)
- Kalyani Dhusia
- Department of Systems and Computational Biology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY, 10461, the United States of America
| | - Zhaoqian Su
- Department of Systems and Computational Biology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY, 10461, the United States of America
| | - Yinghao Wu
- Department of Systems and Computational Biology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY, 10461, the United States of America.
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22
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Phelan T, Lawler C, Pichlmair A, Little MA, Bowie AG, Brady G. Molluscum Contagiosum Virus Protein MC008 Targets NF-κB Activation by Inhibiting Ubiquitination of NEMO. J Virol 2023; 97:e0010823. [PMID: 36916940 PMCID: PMC10062130 DOI: 10.1128/jvi.00108-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 02/17/2023] [Indexed: 03/16/2023] Open
Abstract
Molluscum contagiosum virus (MCV) is a human-adapted poxvirus that causes a common and persistent yet mild infection characterized by distinct, contagious, papular skin lesions. These lesions are notable for having little or no inflammation associated with them and can persist for long periods without an effective clearance response from the host. Like all poxviruses, MCV encodes potent immunosuppressive proteins that perturb innate immune pathways involved in virus sensing, the interferon response, and inflammation, which collectively orchestrate antiviral immunity and clearance, with several of these pathways converging at common signaling nodes. One such node is the regulator of canonical nuclear factor kappa B (NF-κB) activation, NF-κB essential modulator (NEMO). Here, we report that the MCV protein MC008 specifically inhibits NF-κB through its interaction with NEMO, disrupting its early ubiquitin-mediated activation and subsequent downstream signaling. MC008 is the third NEMO-targeting inhibitor to be described in MCV to date, with each inhibiting NEMO activation in distinct ways, highlighting strong selective pressure to evolve multiple ways of disabling this key signaling protein. IMPORTANCE Inflammation lies at the heart of most human diseases. Understanding the pathways that drive this response is the key to new anti-inflammatory therapies. Viruses evolve to target inflammation; thus, understanding how they do this reveals how inflammation is controlled and, potentially, how to disable it when it drives disease. Molluscum contagiosum virus (MCV) has specifically evolved to infect humans and displays an unprecedented ability to suppress inflammation in our tissue. We have identified a novel inhibitor of human innate signaling from MCV, MC008, which targets NEMO, a core regulator of proinflammatory signaling. Furthermore, MC008 appears to inhibit early ubiquitination, thus interrupting later events in NEMO activation, thereby validating current models of IκB kinase (IKK) complex regulation.
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Affiliation(s)
- Thomas Phelan
- Trinity Health Kidney Centre, Trinity Translational Medicine Institute, Trinity College Dublin, St. James’ Hospital Campus, Dublin, Ireland
| | - Clara Lawler
- Trinity Health Kidney Centre, Trinity Translational Medicine Institute, Trinity College Dublin, St. James’ Hospital Campus, Dublin, Ireland
| | | | - Mark A. Little
- Trinity Health Kidney Centre, Trinity Translational Medicine Institute, Trinity College Dublin, St. James’ Hospital Campus, Dublin, Ireland
| | - Andrew G. Bowie
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Gareth Brady
- Trinity Health Kidney Centre, Trinity Translational Medicine Institute, Trinity College Dublin, St. James’ Hospital Campus, Dublin, Ireland
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23
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The Roles of TRAF3 in Immune Responses. DISEASE MARKERS 2023; 2023:7787803. [PMID: 36845015 PMCID: PMC9949957 DOI: 10.1155/2023/7787803] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 02/03/2023] [Accepted: 02/04/2023] [Indexed: 02/18/2023]
Abstract
Seven tumor necrosis factor receptor- (TNFR-) associated factors (TRAFs) have been found in mammals, which are primarily involved in the signal translation of the TNFR superfamily, the Toll-like receptor (TLR) family, and the retinoic acid-inducible gene I- (RIG-I-) like receptor (RLR) family. TRAF3 is one of the most diverse members of the TRAF family. It can positively regulate type I interferon production while negatively regulating signaling pathways of classical nuclear factor-κB, nonclassical nuclear factor-κB, and mitogen-activated protein kinase (MAPK). This review summarizes the roles of TRAF3 signaling and the related immune receptors (e.g., TLRs) in several preclinical and clinical diseases and focuses on the roles of TRAF3 in immune responses, the regulatory mechanisms, and its role in disease.
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24
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OTU7B Modulates the Mosquito Immune Response to Beauveria bassiana Infection via Deubiquitination of the Toll Adaptor TRAF4. Microbiol Spectr 2023; 11:e0312322. [PMID: 36537797 PMCID: PMC9927300 DOI: 10.1128/spectrum.03123-22] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The Aedes aegypti mosquito transmits devastating flaviviruses, such as Zika, dengue, and yellow fever viruses. For more effective control of the vector, the pathogenicity of Beauveria bassiana, a fungus commonly used for biological control of pest insects, may be enhanced based on in-depth knowledge of molecular interactions between the pathogen and its host. Here, we identified a mechanism employed by B. bassiana, which efficiently blocks the Ae. aegypti antifungal immune response by a protease that contains an ovarian tumor (OTU) domain. RNA-sequencing analysis showed that the depletion of OTU7B significantly upregulates the mRNA level of immunity-related genes after a challenge of the fungus. CRISPR-Cas9 knockout of OTU7B conferred a higher resistance of mosquitoes to the fungus B. bassiana. OTU7B suppressed activation of the immune response by preventing nuclear translocation of the NF-κB transcription factor Rel1, a mosquito orthologue of Drosophila Dorsal. Further studies identified tumor necrosis factor receptor-associated factor 4 (TRAF4) as an interacting protein of OTU7B. TRAF4-deficient mosquitoes were more sensitive to fungal infection, indicating TRAF4 to be the adaptor protein that activates the Toll pathway. TRAF4 is K63-link polyubiquitinated at K338 residue upon immune challenge. However, OTU7B inhibited the immune signaling by enzymatically removing the polyubiquitin chains of mosquito TRAF4. Thus, this study has uncovered a novel mechanism of fungal action against the host innate immunity, providing a platform for further improvement of fungal pathogen effectiveness. IMPORTANCE Insects use innate immunity to defend against microbial infection. The Toll pathway is a major immune signaling pathway that is associated with the antifungal immune response in mosquitoes. Our study identified a fungal-induced deubiquitinase, OTU7B, which, when knocked out, promotes the translocation of the NF-κB factor Rel1 into the nucleus and confers enhanced resistance to fungal infection. We further found the counterpart of OTU7B, TRAF4, which is a component of the Toll pathway and acts as an adaptor protein. OTU7B enzymatically removes K63-linked polyubiquitin chains from TRAF4. The immune response is suppressed, and mosquitoes become much more sensitive to the Beauveria bassiana infection. Our findings reveal a novel mechanism of fungal action against the host innate immunity.
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25
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Gomis-Rüth FX, Stöcker W. Structural and evolutionary insights into astacin metallopeptidases. Front Mol Biosci 2023; 9:1080836. [PMID: 36685277 PMCID: PMC9848320 DOI: 10.3389/fmolb.2022.1080836] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 11/30/2022] [Indexed: 01/05/2023] Open
Abstract
The astacins are a family of metallopeptidases (MPs) that has been extensively described from animals. They are multidomain extracellular proteins, which have a conserved core architecture encompassing a signal peptide for secretion, a prodomain or prosegment and a zinc-dependent catalytic domain (CD). This constellation is found in the archetypal name-giving digestive enzyme astacin from the European crayfish Astacus astacus. Astacin catalytic domains span ∼200 residues and consist of two subdomains that flank an extended active-site cleft. They share several structural elements including a long zinc-binding consensus sequence (HEXXHXXGXXH) immediately followed by an EXXRXDRD motif, which features a family-specific glutamate. In addition, a downstream SIMHY-motif encompasses a "Met-turn" methionine and a zinc-binding tyrosine. The overall architecture and some structural features of astacin catalytic domains match those of other more distantly related MPs, which together constitute the metzincin clan of metallopeptidases. We further analysed the structures of PRO-, MAM, TRAF, CUB and EGF-like domains, and described their essential molecular determinants. In addition, we investigated the distribution of astacins across kingdoms and their phylogenetic origin. Through extensive sequence searches we found astacin CDs in > 25,000 sequences down the tree of life from humans beyond Metazoa, including Choanoflagellata, Filasterea and Ichtyosporea. We also found < 400 sequences scattered across non-holozoan eukaryotes including some fungi and one virus, as well as in selected taxa of archaea and bacteria that are pathogens or colonizers of animal hosts, but not in plants. Overall, we propose that astacins originate in the root of Holozoa consistent with Darwinian descent and that the latter genes might be the result of horizontal gene transfer from holozoan donors.
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Affiliation(s)
- F. Xavier Gomis-Rüth
- Proteolysis Laboratory, Department of Structural Biology, Molecular Biology Institute of Barcelona (IBMB), Higher Scientific Research Council (CSIC), Barcelona, Catalonia, Spain,*Correspondence: F. Xavier Gomis-Rüth, ; Walter Stöcker,
| | - Walter Stöcker
- Institute of Molecular Physiology (IMP), Johannes Gutenberg-University Mainz (JGU), Mainz, Germany,*Correspondence: F. Xavier Gomis-Rüth, ; Walter Stöcker,
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26
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Kim CM, Jang H, Hong E, Lee JH, Park HH. Structure of fish TRAF4 and its implication in TRAF4-mediated immune cell and platelet signaling. FISH & SHELLFISH IMMUNOLOGY 2023; 132:108462. [PMID: 36455779 DOI: 10.1016/j.fsi.2022.108462] [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: 08/02/2022] [Revised: 11/20/2022] [Accepted: 11/27/2022] [Indexed: 06/17/2023]
Abstract
Due to an increasing interest in immunity and signal transduction in teleost fish, important key signaling molecules associated with the immune response, including TRAF molecules, have been recently cloned and characterized. To better understand the role of TRAF4 in fish immune signaling and compare it with the human system, our study cloned the TRAF4 gene from the Antarctic yellowbelly rockcod Notothenia coriiceps (ncTRAF4) and purified the protein. Here, we report the first crystal structure of teleost fish TRAF4. Based on biochemical characterization, our findings elucidated the mechanisms through which signaling molecules gain cold adaptivity. Additionally, we identified a platelet receptor GPIbβ homolog in N. coriiceps (ncGPIbβ) and found that the "RRFERLFKEARRTS" region of this homolog directly binds to ncTRAF4, indicating that ncTRAF4 also recognizes the "RLXA" motif for receptor interactions and further TARF4-mediated cellular signaling. Collectively, our findings provide novel insights into the mechanisms of TRAF4-mediated immune cell and platelet signaling in fish and the structural flexibility-mediated cold adaptiveness of signaling molecules.
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Affiliation(s)
- Chang Min Kim
- College of Pharmacy, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Hyunseok Jang
- College of Pharmacy, Chung-Ang University, Seoul, 06974, Republic of Korea; Department of Global Innovative Drugs, Graduate School of Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Eunmi Hong
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu, 41061, Republic of Korea
| | - Jun Hyuck Lee
- Unit of Research for Practical Application, Korea Polar Research Institute, Incheon, 21990, Republic of Korea
| | - Hyun Ho Park
- College of Pharmacy, Chung-Ang University, Seoul, 06974, Republic of Korea; Department of Global Innovative Drugs, Graduate School of Chung-Ang University, Seoul, 06974, Republic of Korea.
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27
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Tsitsikov EN, Hameed S, Tavakol SA, Stephens TM, Tsytsykova AV, Garman L, Bi WL, Dunn IF. Specific gene expression signatures of low grade meningiomas. Front Oncol 2023; 13:1126550. [PMID: 36937440 PMCID: PMC10016690 DOI: 10.3389/fonc.2023.1126550] [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: 12/18/2022] [Accepted: 02/10/2023] [Indexed: 03/05/2023] Open
Abstract
Introduction Meningiomas are the most common primary central nervous system (CNS) tumors in adults, representing approximately one-third of all primary adult CNS tumors. Although several recent publications have proposed alternative grading systems of meningiomas that incorporate genomic and/or epigenomic data to better predict meningioma recurrence and progression-free survival, our understanding of driving forces of meningioma development is still limited. Objective To define gene expression signatures of the most common subtypes of meningiomas to better understand cellular processes and signaling pathways specific for each tumor genotype. Methods We used RNA sequencing (RNA-seq) to determine whole transcriptome profiles of twenty meningiomas with genomic alterations including NF2 inactivation, loss of chr1p, and missense mutations in TRAF7, AKT1 and KLF4. Results The analysis revealed that meningiomas with NF2 gene inactivation expressed higher levels of BCL2 and GLI1 compared with tumors harboring TRAF7 missense mutations. Moreover, NF2 meningiomas were subdivided into two distinct groups based on additional loss of chr1p. NF2 tumors with intact chr1p were characterized by the high expression of tumor suppressor PTCH2 compared to NF2 tumors with chr1p loss. Taken together with the high expression of BCL2 and GLI1, these results suggest that activation of Sonic Hedgehog pathway may contribute to NF2 meningioma development. In contrast, NF2 tumors with chr1p loss expressed high levels of transcription factor FOXD3 and its antisense RNA FOXD3-AS1. Examination of TRAF7 tumors demonstrated that TRAF7 regulates a number of biomechanically responsive genes (KRT6a, KRT16, IL1RL1, and AQP3 among others). Interestingly, AKT1 and KLF4 meningiomas expressed genes specific for PI3K/AKT signaling pathway, suggesting overlapping gene signatures between the two subtypes. In addition, KLF4 meningiomas had high expression of carcinoembryonic antigen family members CEACAM6 and CEACAM5. Conclusions Each group of meningiomas displayed a unique gene expression signature suggesting signaling pathways potentially implicated in tumorigenesis. These findings will improve our understanding of meningioma tumorigenesis and prognosis.
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Affiliation(s)
- Erdyni N. Tsitsikov
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Sanaa Hameed
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Sherwin A. Tavakol
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Tressie M. Stephens
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Alla V. Tsytsykova
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Lori Garman
- Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Wenya Linda Bi
- Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Ian F. Dunn
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
- *Correspondence: Ian F. Dunn,
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cIAP1/TRAF2 interplay promotes tumor growth through the activation of STAT3. Oncogene 2023; 42:198-208. [PMID: 36400972 DOI: 10.1038/s41388-022-02544-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 10/26/2022] [Accepted: 11/04/2022] [Indexed: 11/19/2022]
Abstract
Cellular inhibitor of apoptosis-1 (cIAP1) is a signaling regulator with oncogenic properties. It is involved in the regulation of signaling pathways controlling inflammation, cell survival, proliferation, differentiation and motility. It is recruited into membrane-receptor-associated signaling complexes thanks to the molecular adaptor TRAF2. However, the cIAP1/TRAF2 complex exists, independently of receptor engagement, in several subcellular compartments. The present work strengthens the importance of TRAF2 in the oncogenic properties of cIAP1. cIAPs-deficient mouse embryonic fibroblasts (MEFs) were transformed using the HRas-V12 oncogene. Re-expression of cIAP1 enhanced tumor growth in a nude mice xenograft model, and promoted lung tumor nodes formation. Deletion or mutation of the TRAF2-binding site completely abolished the oncogenic properties of cIAP1. Further, cIAP1 mediated the clustering of TRAF2, which was sufficient to stimulate tumor growth. Our TRAF2 interactome analysis showed that cIAP1 was critical for TRAF2 to bind to its protein partners. Thus, cIAP1 and TRAF2 would be two essential subunits of a signaling complex promoting a pro-tumoral signal. cIAP1/TRAF2 promoted the activation of the canonical NF-κB and ERK1/2 signaling pathways. NF-κB-dependent production of IL-6 triggered the activation of the JAK/STAT3 axis in an autocrine manner. Inhibition or downregulation of STAT3 specifically compromised the growth of cIAP1-restored MEFs but not that of MEFs expressing a cIAP1-mutant and treating mice with the STAT3 inhibitor niclosamide completely abrogated cIAP1/TRAF2-mediated tumor growth. Altogether, we demonstrate that cIAP1/TRAF2 binding is essential to promote tumor growth via the activation of the JAK/STAT3 signaling pathway.
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29
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Erba F, Di Paola L, Di Venere A, Mastrangelo E, Cossu F, Mei G, Minicozzi V. Head or tail? A molecular dynamics approach to the complex structure of TNF-associated factor TRAF2. Biomol Concepts 2023; 14:bmc-2022-0031. [PMID: 37377424 DOI: 10.1515/bmc-2022-0031] [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: 03/31/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
Tumor necrosis factor receptor-associated factor proteins (TRAFs) are trimeric proteins that play a fundamental role in signaling, acting as intermediaries between the tumor necrosis factor (TNF) receptors and the proteins that transmit the downstream signal. The monomeric subunits of all the TRAF family members share a common tridimensional structure: a C-terminal globular domain and a long coiled-coil tail characterizing the N-terminal section. In this study, the dependence of the TRAF2 dynamics on the length of its tail was analyzed in silico. In particular, we used the available crystallographic structure of a C-terminal fragment of TRAF2 (168 out of 501 a.a.), TRAF2-C, and that of a longer construct, addressed as TRAF2-plus, that we have re-constructed using the AlphaFold2 code. The results indicate that the longer N-terminal tail of TRAF2-plus has a strong influence on the dynamics of the globular regions in the protein C-terminal head. In fact, the quaternary interactions among the TRAF2-C subunits change asymmetrically in time, while the movements of TRAF2-plus monomers are rather limited and more ordered than those of the shorter construct. Such findings shed a new light on the dynamics of TRAF subunits and on the protein mechanism in vivo, since TRAF monomer-trimer equilibrium is crucial for several reasons (receptor recognition, membrane binding, hetero-oligomerization).
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Affiliation(s)
- Fulvio Erba
- Department of Clinical Science and Translational Medicine, Tor Vergata University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | - Luisa Di Paola
- Unit of Chemical-Physics Fundamentals in Chemical Engineering, Department of Engineering, University Campus Bio-Medico of Rome, Via Álvaro del Portillo 21, 00128 Rome, Italy
| | - Almerinda Di Venere
- Department of Experimental Medicine, Tor Vergata University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | - Eloise Mastrangelo
- National Research Council (IBF-CNR) Milan Unit, Institute of Biophysics, Via Celoria 26, 20133 Milan, Italy
| | - Federica Cossu
- National Research Council (IBF-CNR) Milan Unit, Institute of Biophysics, Via Celoria 26, 20133 Milan, Italy
| | - Giampiero Mei
- Department of Experimental Medicine, Tor Vergata University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | - Velia Minicozzi
- Department of Physics and INFN, Tor Vergata University of Rome, Via Della Ricerca Scientifica 1, 00133 Rome, Italy
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Daniels KG, Wang S, Simic MS, Bhargava HK, Capponi S, Tonai Y, Yu W, Bianco S, Lim WA. Decoding CAR T cell phenotype using combinatorial signaling motif libraries and machine learning. Science 2022; 378:1194-1200. [PMID: 36480602 PMCID: PMC10026561 DOI: 10.1126/science.abq0225] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Chimeric antigen receptor (CAR) costimulatory domains derived from native immune receptors steer the phenotypic output of therapeutic T cells. We constructed a library of CARs containing ~2300 synthetic costimulatory domains, built from combinations of 13 signaling motifs. These CARs promoted diverse human T cell fates, which were sensitive to motif combinations and configurations. Neural networks trained to decode the combinatorial grammar of CAR signaling motifs allowed extraction of key design rules. For example, non-native combinations of motifs that bind tumor necrosis factor receptor-associated factors (TRAFs) and phospholipase C gamma 1 (PLCγ1) enhanced cytotoxicity and stemness associated with effective tumor killing. Thus, libraries built from minimal building blocks of signaling, combined with machine learning, can efficiently guide engineering of receptors with desired phenotypes.
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Affiliation(s)
- Kyle G Daniels
- Cell Design Institute, University of California, San Francisco, San Francisco, CA 94158, USA
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Shangying Wang
- Department of Functional Genomics and Cellular Engineering, IBM Almaden Research Center, San Jose, CA 95120, USA
- Center for Cellular Construction, San Francisco, CA 94158, USA
| | - Milos S Simic
- Cell Design Institute, University of California, San Francisco, San Francisco, CA 94158, USA
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Hersh K Bhargava
- Cell Design Institute, University of California, San Francisco, San Francisco, CA 94158, USA
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Sara Capponi
- Department of Functional Genomics and Cellular Engineering, IBM Almaden Research Center, San Jose, CA 95120, USA
- Center for Cellular Construction, San Francisco, CA 94158, USA
| | - Yurie Tonai
- Cell Design Institute, University of California, San Francisco, San Francisco, CA 94158, USA
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Wei Yu
- Cell Design Institute, University of California, San Francisco, San Francisco, CA 94158, USA
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Simone Bianco
- Department of Functional Genomics and Cellular Engineering, IBM Almaden Research Center, San Jose, CA 95120, USA
- Center for Cellular Construction, San Francisco, CA 94158, USA
| | - Wendell A Lim
- Cell Design Institute, University of California, San Francisco, San Francisco, CA 94158, USA
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
- Center for Cellular Construction, San Francisco, CA 94158, USA
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Goodman DB, Azimi CS, Kearns K, Talbot A, Garakani K, Garcia J, Patel N, Hwang B, Lee D, Park E, Vykunta VS, Shy BR, Ye CJ, Eyquem J, Marson A, Bluestone JA, Roybal KT. Pooled screening of CAR T cells identifies diverse immune signaling domains for next-generation immunotherapies. Sci Transl Med 2022; 14:eabm1463. [PMID: 36350984 PMCID: PMC9939256 DOI: 10.1126/scitranslmed.abm1463] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Chimeric antigen receptors (CARs) repurpose natural signaling components to retarget T cells to refractory cancers but have shown limited efficacy in persistent, recurrent malignancies. Here, we introduce "CAR Pooling," a multiplexed approach to rapidly identify CAR designs with clinical potential. Forty CARs with signaling domains derived from a range of immune cell lineages were evaluated in pooled assays for their ability to stimulate critical T cell effector functions during repetitive stimulation that mimics long-term tumor antigen exposure. Several domains were identified from the tumor necrosis factor (TNF) receptor family that have been primarily associated with B cells. CD40 enhanced proliferation, whereas B cell-activating factor receptor (BAFF-R) and transmembrane activator and CAML interactor (TACI) promoted cytotoxicity. These functions were enhanced relative to clinical benchmarks after prolonged antigen stimulation, and CAR T cell signaling through these domains fell into distinct states of memory, cytotoxicity, and metabolism. BAFF-R CAR T cells were enriched for a highly cytotoxic transcriptional signature previously associated with positive clinical outcomes. We also observed that replacing the 4-1BB intracellular signaling domain with the BAFF-R signaling domain in a clinically validated B cell maturation antigen (BCMA)-specific CAR resulted in enhanced activity in a xenotransplant model of multiple myeloma. Together, these results show that CAR Pooling is a general approach for rapid exploration of CAR architecture and activity to improve the efficacy of CAR T cell therapies.
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Affiliation(s)
- Daniel B. Goodman
- Department of Microbiology and Immunology, University of California, San Francisco; San Francisco, California, 94143, USA
- Parker Institute for Cancer Immunotherapy; San Francisco, California, 94143, USA
- Gladstone UCSF Institute for Genetic Immunology; San Francisco, CA, 94107, USA
- School of Medicine, University of California, San Francisco; San Francisco, CA, USA
- Diabetes Center, University of California, San Francisco; San Francisco, CA 94143, USA
| | - Camillia S. Azimi
- Department of Microbiology and Immunology, University of California, San Francisco; San Francisco, California, 94143, USA
- Parker Institute for Cancer Immunotherapy; San Francisco, California, 94143, USA
| | - Kendall Kearns
- Department of Microbiology and Immunology, University of California, San Francisco; San Francisco, California, 94143, USA
- Parker Institute for Cancer Immunotherapy; San Francisco, California, 94143, USA
| | - Alexis Talbot
- Department of Microbiology and Immunology, University of California, San Francisco; San Francisco, California, 94143, USA
- Parker Institute for Cancer Immunotherapy; San Francisco, California, 94143, USA
- Gladstone UCSF Institute for Genetic Immunology; San Francisco, CA, 94107, USA
- INSERM U976, Saint Louis Research Institute, Paris City University, Paris, France
| | - Kiavash Garakani
- Department of Microbiology and Immunology, University of California, San Francisco; San Francisco, California, 94143, USA
- Parker Institute for Cancer Immunotherapy; San Francisco, California, 94143, USA
| | - Julie Garcia
- Department of Microbiology and Immunology, University of California, San Francisco; San Francisco, California, 94143, USA
- Parker Institute for Cancer Immunotherapy; San Francisco, California, 94143, USA
| | - Nisarg Patel
- Department of Oral and Maxillofacial Surgery, University of California, San Francisco; San Francisco, CA, USA
- Bakar Computational Health Sciences Institute, University of California, San Francisco; San Francisco, CA, USA
- School of Medicine, University of California, San Francisco; San Francisco, CA, USA
| | - Byungjin Hwang
- Institute for Human Genetics (IHG), University of California, San Francisco; San Francisco, California, USA
- Department of Medicine, University of California, San Francisco; San Francisco, California, 94143, USA
| | - David Lee
- Institute for Human Genetics (IHG), University of California, San Francisco; San Francisco, California, USA
- Department of Medicine, University of California, San Francisco; San Francisco, California, 94143, USA
| | - Emily Park
- Department of Microbiology and Immunology, University of California, San Francisco; San Francisco, California, 94143, USA
- Parker Institute for Cancer Immunotherapy; San Francisco, California, 94143, USA
| | - Vivasvan S. Vykunta
- Parker Institute for Cancer Immunotherapy; San Francisco, California, 94143, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco; San Francisco, California, 94158, USA
- Gladstone UCSF Institute for Genetic Immunology; San Francisco, CA, 94107, USA
- School of Medicine, University of California, San Francisco; San Francisco, CA, USA
- Department of Medicine, University of California, San Francisco; San Francisco, California, 94143, USA
| | - Brian R. Shy
- Parker Institute for Cancer Immunotherapy; San Francisco, California, 94143, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco; San Francisco, California, 94158, USA
- Gladstone UCSF Institute for Genetic Immunology; San Francisco, CA, 94107, USA
- School of Medicine, University of California, San Francisco; San Francisco, CA, USA
- Department of Medicine, University of California, San Francisco; San Francisco, California, 94143, USA
| | - Chun Jimmie Ye
- Parker Institute for Cancer Immunotherapy; San Francisco, California, 94143, USA
- Chan Zuckerberg Biohub; San Francisco, California, 94158, USA
- Bakar Computational Health Sciences Institute, University of California, San Francisco; San Francisco, CA, USA
- Institute for Human Genetics (IHG), University of California, San Francisco; San Francisco, California, USA
- Department of Epidemiology and Biostatistics, San Francisco; San Francisco, CA 94143, USA
- Department of Medicine, University of California, San Francisco; San Francisco, California, 94143, USA
| | - Justin Eyquem
- Department of Microbiology and Immunology, University of California, San Francisco; San Francisco, California, 94143, USA
- Parker Institute for Cancer Immunotherapy; San Francisco, California, 94143, USA
- Gladstone UCSF Institute for Genetic Immunology; San Francisco, CA, 94107, USA
| | - Alexander Marson
- Department of Microbiology and Immunology, University of California, San Francisco; San Francisco, California, 94143, USA
- Parker Institute for Cancer Immunotherapy; San Francisco, California, 94143, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco; San Francisco, California, 94158, USA
- Chan Zuckerberg Biohub; San Francisco, California, 94158, USA
- Gladstone UCSF Institute for Genetic Immunology; San Francisco, CA, 94107, USA
- School of Medicine, University of California, San Francisco; San Francisco, CA, USA
- Institute for Human Genetics (IHG), University of California, San Francisco; San Francisco, California, USA
- Innovative Genomics Institute, University of California, Berkeley; Berkeley, CA 94720, USA
- Diabetes Center, University of California, San Francisco; San Francisco, CA 94143, USA
- Department of Medicine, University of California, San Francisco; San Francisco, California, 94143, USA
| | - Jeffrey A. Bluestone
- Diabetes Center, University of California, San Francisco; San Francisco, CA 94143, USA
- Sonoma Biotherapeutics; South San Francisco, CA, USA
- Department of Medicine, University of California, San Francisco; San Francisco, California, 94143, USA
| | - Kole T. Roybal
- Department of Microbiology and Immunology, University of California, San Francisco; San Francisco, California, 94143, USA
- Parker Institute for Cancer Immunotherapy; San Francisco, California, 94143, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco; San Francisco, California, 94158, USA
- Chan Zuckerberg Biohub; San Francisco, California, 94158, USA
- Gladstone UCSF Institute for Genetic Immunology; San Francisco, CA, 94107, USA
- UCSF Cell Design Institute; San Francisco, California, 94158, USA
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Tang JC, Li Y, Wang YL, Zhang ZP, Jiang YH, Feng JJ, Zou PF. TRAF5 splicing variants associate with TRAF3 and RIP1 in NF-κB and type I IFN signaling in large yellow croaker Larimichthys crocea. FISH & SHELLFISH IMMUNOLOGY 2022; 130:418-427. [PMID: 36152803 DOI: 10.1016/j.fsi.2022.09.042] [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: 06/15/2022] [Revised: 08/28/2022] [Accepted: 09/16/2022] [Indexed: 06/16/2023]
Abstract
As a member of the tumor necrosis factor receptor-associated factor (TRAF) family, TRAF5 acts as a crucial adaptor molecule and plays important roles in the host innate immune responses. In the present study, the typical form and a splicing variant of TRAF5, termed Lc-TRAF5_tv1 and Lc-TRAF5_tv2 were characterized in large yellow croaker (Larimichthys crocea). The putative Lc-TRAF5_tv1 protein is constituted of 577 aa, contains a RING finger domain, two zinc finger domains, a coiled-coil domain, and a MATH domain, whereas Lc-TRAF5_tv2 protein is constituted of 236 aa and only contains a RING finger domain due to a premature stop resulted from the intron retention. Subcellular localization analysis revealed that both of Lc-TRAF5_tv1 and Lc-TRAF5_tv2 were localized in the cytoplasm, with Lc-TRAF5_tv2 found to aggregate around the nucleus. It was revealed that Lc-TRAF5_tv1 mRNA was broadly expressed in examined organs/tissues and showed extremely higher level than that of Lc-TRAF5_tv2, and both of them could be up-regulated under poly I:C, LPS, PGN, and Pseudomonas plecoglossicida stimulations in vivo. Interestingly, overexpression of Lc-TRAF5_tv1 and Lc-TRAF5_tv2 could significantly induce NF-κB but not IFN1 activation, whereas co-expression of them remarkably induced IFN1 activation but impaired NF-κB activation. In addition, both Lc-TRAF5_tv1 and Lc-TRAF5_tv2 were associated with TRAF3 and RIP1 in IFN1 activation, whereas only Lc-TRAF5_tv1 cooperated with TRAF3 and RIP1 in NF-κB activation. These results collectively indicated that the splicing variant together with the typical form of TRAF5 function importantly in the regulation of host immune signaling in teleosts.
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Affiliation(s)
- Jun Chun Tang
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Ornamental Aquarium Engineering Research Centre in University of Fujian Province, Fisheries College, Jimei University, Xiamen, Fujian Province, 361021, China
| | - Ying Li
- Key Laboratory of Estuarine Ecological Security and Environmental Health, Tan Kah Kee College, Xiamen University, Zhangzhou, Fujian Province, 363105, China.
| | - Yi Lei Wang
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Ornamental Aquarium Engineering Research Centre in University of Fujian Province, Fisheries College, Jimei University, Xiamen, Fujian Province, 361021, China; State Key Laboratory of Large Yellow Croaker Breeding, Ningde Fufa Fisheries Company Limited, Ningde, Fujian Province, 352103, China
| | - Zi Ping Zhang
- State Key Laboratory of Large Yellow Croaker Breeding, Ningde Fufa Fisheries Company Limited, Ningde, Fujian Province, 352103, China; College of Marine Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350002, China
| | - Yong Hua Jiang
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Ornamental Aquarium Engineering Research Centre in University of Fujian Province, Fisheries College, Jimei University, Xiamen, Fujian Province, 361021, China
| | - Jian Jun Feng
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Ornamental Aquarium Engineering Research Centre in University of Fujian Province, Fisheries College, Jimei University, Xiamen, Fujian Province, 361021, China
| | - Peng Fei Zou
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Ornamental Aquarium Engineering Research Centre in University of Fujian Province, Fisheries College, Jimei University, Xiamen, Fujian Province, 361021, China.
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Iyengar PV, Marvin DL, Lama D, Tan TZ, Suriyamurthy S, Xie F, van Dinther M, Mei H, Verma CS, Zhang L, Ritsma L, ten Dijke P. TRAF4 Inhibits Bladder Cancer Progression by Promoting BMP/SMAD Signaling. Mol Cancer Res 2022; 20:1516-1531. [PMID: 35731212 PMCID: PMC9530648 DOI: 10.1158/1541-7786.mcr-20-1029] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 02/24/2022] [Accepted: 06/17/2022] [Indexed: 01/07/2023]
Abstract
Patients with bladder cancer often have a poor prognosis due to the highly invasive and metastatic characteristics of bladder cancer cells. Epithelial-to-mesenchymal transition (EMT) has been causally linked to bladder cancer invasion. The E3 ubiquitin ligase, tumor necrosis factor receptor-associated factor 4 (TRAF4) has been implicated as a tumor promoter in a wide range of cancers. In contrast, here we show that low TRAF4 expression is associated with poor overall survival in patients with bladder cancer. We show that the TRAF4 gene is epigenetically silenced and that ERK mediates TRAF4 phosphorylation, resulting in lower TRAF4 protein levels in bladder cancer cells. In addition, we demonstrate that TRAF4 is inversely correlated with an EMT gene signature/protein marker expression. Functionally, by manipulating TRAF4 expression, we show that TRAF4 regulates EMT genes and epithelial and invasive properties in bladder cancer cells. Transcriptomic analysis of dysregulated TRAF4 expression in bladder cancer cell lines revealed that high TRAF4 expression enhances the bone morphogenetic protein (BMP)/SMAD and inhibits the NF-κB signaling pathway. Mechanistically, we show that TRAF4 targets the E3 ubiquitin ligase SMURF1, a negative regulator of BMP/SMAD signaling, for proteasomal degradation in bladder cancer cells. This was corroborated in patient samples where TRAF4 positively correlates with phospho-SMAD1/5, and negatively correlates with phospho-NFκb-p65. Lastly, we show that genetic and pharmacologic inhibition of SMURF1 inhibits the migration of aggressive mesenchymal bladder cancer cells. IMPLICATIONS Our findings identify E3 ubiquitin ligase TRAF4 as a potential therapeutic target or biomarker for bladder cancer progression.
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Affiliation(s)
- Prasanna Vasudevan Iyengar
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands.,Oncode Institute, Utrecht, the Netherlands.,Corresponding Authors: Prasanna Vasudevan Iyengar, Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, Leiden 2333ZC, the Netherlands. Phone: 715-269-271; Fax: 715-268-270; E-mail: ; and Peter ten Dijke,
| | - Dieuwke Louise Marvin
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands.,Oncode Institute, Utrecht, the Netherlands
| | - Dilraj Lama
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Solna, Stockholm, Sweden.,Bioinformatics Institute (A*STAR), Singapore
| | - Tuan Zea Tan
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Sudha Suriyamurthy
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands.,Oncode Institute, Utrecht, the Netherlands
| | - Feng Xie
- Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China.,Institutes of Biology and Medical Science, Soochow University, Suzhou, China
| | - Maarten van Dinther
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands.,Oncode Institute, Utrecht, the Netherlands
| | - Hailiang Mei
- Sequencing Analysis Support Core, Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, the Netherlands
| | - Chandra Shekhar Verma
- Bioinformatics Institute (A*STAR), Singapore.,Department of Biological Sciences, National University of Singapore, Singapore.,School of Biological Sciences, Nanyang Technological University, Singapore
| | - Long Zhang
- Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China
| | - Laila Ritsma
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands.,Oncode Institute, Utrecht, the Netherlands
| | - Peter ten Dijke
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands.,Oncode Institute, Utrecht, the Netherlands.,Corresponding Authors: Prasanna Vasudevan Iyengar, Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, Leiden 2333ZC, the Netherlands. Phone: 715-269-271; Fax: 715-268-270; E-mail: ; and Peter ten Dijke,
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34
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Zhi L, Wang W, Zheng J, Liu S, Zhou S, Qin Q, Huang Y, Huang X. Grouper TRIM23 exerts antiviral activity against iridovirus and nodavirus. Front Immunol 2022; 13:985291. [PMID: 36203610 PMCID: PMC9531863 DOI: 10.3389/fimmu.2022.985291] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Accepted: 08/30/2022] [Indexed: 11/13/2022] Open
Abstract
TRIM (tripartite motif) proteins have been demonstrated to exert critical roles in host defense against different microbial pathogens. Among them, TRIM23 acts as an important regulatory factor in antiviral immune and inflammatory responses, but the roles of fish TRIM23 against virus infection still remain largely unknown. Here, we investigated the characteristics of TRIM23 homolog from orange spotted grouper (Epinephelus coioides) (EcTRIM23). EcTRIM23 encoded a 580 amino acid peptide, which shared 93.1%, 89.73% and 86.36% identity with golden perch (Perca flavescens), zebrafish (Danio rerio) and human (Homo sapiens), respectively. The transcription levels of EcTRIM23 were significantly up-regulated in response to Singapore grouper iridovirus (SGIV) and red-spotted grouper nervous necrosis virus (RGNNV) infection. EcTRIM23 overexpression in vitro significantly inhibited RGNNV and SGIV replication, evidenced by the delayed cytopathic effect (CPE) progression and the decreased expression of viral core genes. EcTRIM23 significantly increased the expression levels of interferon (IFN) related signaling molecules and pro-inflammatory cytokines, as well as the promoter activities of IFN and NF-κB, suggesting that EcTRIM23 exerted antiviral function by positively regulating host IFN response. Exogenous EcTRIM23 exhibited either diffuse or aggregated localization in grouper cells. After co-transfection, TANK binding kinase 1 (TBK1), TNF receptor associated factor (TRAF) 3 and TRAF4, TRAF5 and TRAF6 were found to interact with EcTRIM23 in grouper cells. Moreover, these proteins could be recruited and co-localized with EcTRIM23 in vitro. Together, our results demonstrated that fish TRIM23 exerted antiviral activity against fish viruses by interacting with multiple host proteins to regulate immune responses.
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Affiliation(s)
- Linyong Zhi
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, China
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangzhou, China
| | - Wenji Wang
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, China
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangzhou, China
| | - Jiaying Zheng
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, China
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangzhou, China
| | - Shanxing Liu
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, China
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangzhou, China
| | - Sheng Zhou
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, China
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangzhou, China
| | - Qiwei Qin
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, China
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, China
| | - Youhua Huang
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, China
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangzhou, China
- *Correspondence: Xiaohong Huang, ; Youhua Huang,
| | - Xiaohong Huang
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, China
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangzhou, China
- *Correspondence: Xiaohong Huang, ; Youhua Huang,
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35
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TRAF4 Promotes the Proliferation of Glioblastoma by Stabilizing SETDB1 to Activate the AKT Pathway. Int J Mol Sci 2022; 23:ijms231710161. [PMID: 36077559 PMCID: PMC9456363 DOI: 10.3390/ijms231710161] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/21/2022] [Accepted: 08/26/2022] [Indexed: 11/24/2022] Open
Abstract
The process of ubiquitination regulates the degradation, transport, interaction, and stabilization of substrate proteins, and is crucial for cell signal transduction and function. TNF receptor-associated factor 4, TRAF4, is a member of the TRAF family and is involved in the process of ubiquitination as an E3 ubiquitin protein ligase. Here, we found that TRAF4 expression correlates with glioma subtype and grade, and that TRAF4 is significantly overexpressed in glioblastoma and predicts poor prognosis. Knockdown of TRAF4 significantly inhibited the growth, proliferation, migration, and invasion of glioblastoma cells. Mechanistically, we found that TRAF4 only interacts with the Tudor domain of the AKT pathway activator SETDB1. TRAF4 mediates the atypical ubiquitination of SETDB1 to maintain its stability and function, thereby promoting the activation of the AKT pathway. Restoring SETDB1 expression in TRAF4 knockdown glioblastoma cells partially restored cell growth and proliferation. Collectively, our findings reveal a novel mechanism by which TRAF4 mediates AKT pathway activation, suggesting that TRAF4 may serve as a biomarker and promising therapeutic target for glioblastoma.
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Negative Regulatory Role of the Spring Viremia of Carp Virus Matrix Protein in the Host Interferon Response by Targeting the MAVS/TRAF3 Signaling Axis. J Virol 2022; 96:e0079122. [PMID: 35913215 PMCID: PMC9400495 DOI: 10.1128/jvi.00791-22] [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: 02/03/2023] Open
Abstract
Spring viremia of carp virus (SVCV) is a severe infectious pathogen that causes high rates of mortality in cyprinids and other fish species. Despite numerous investigations of SVCV infection, the underlying molecular mechanisms remain poorly understood. In this study, we found that the SVCV matrix protein (SVCV-M) played an inhibitory role in the host interferon (IFN) response by targeting the MAVS/TRAF3 signaling axis, thereby uncovering a previously unrecognized mechanism of SVCV escape from host innate antiviral immunity. Mechanistically, SVCV-M was located at the mitochondria independent of MAVS, which allowed SVCV-M to build an arena for competition with the MAVS platform. A microscale thermophoresis assay showed that SVCV-M had a high affinity for TRAF3, as indicated by a lower equilibrium dissociation constant (KD) value than that of MAVS with TRAF3. Therefore, the association of MAVS with TRAF3 was competitively impaired by SVCV-M in a dose-dependent manner. Accordingly, SVCV-M showed a potent ability to inhibit the K63-linked polyubiquitination of TRAF3. This inhibition was accompanied by the impairment of the IFN response, as shown by the marked decline in IFN-φ1-promoter (pro) luciferase reporter activity. By constructing truncated TRAF3 and SVCV-M proteins, the RING finger, zinc finger, and coiled-coil domains of TRAF3 and the hydrophobic-pocket-like structure formed by the α2-, α3-, and α4-helices of SVCV-M may be the major target and antagonistic modules responsible for the protein-protein interaction between the TRAF3 and SVCV-M proteins. These findings highlighted the intervention of SVCV-M in host innate immunity, thereby providing new insights into the extensive participation of viral matrix proteins in multiple biological activities. IMPORTANCE The matrix protein of SVCV (SVCV-M) is an indispensable structural element for nucleocapsid condensation and virion formation during viral morphogenesis, and it connects the core nucleocapsid particle to the outer membrane within the mature virus. Previous studies have emphasized the architectural role of SVCV-M in viral construction; however, the potential nonstructural functions of SVCV-M in viral replication and virus-host interactions remain poorly understood. In this study, we identified the inhibitory role of the SVCV-M protein in host IFN production by competitively recruiting TRAF3 from the MAVS signaling complex and impairing TRAF3 activation via inhibition of K63-linked polyubiquitination. This finding provided new insights into the regulatory role of SVCV-M in host innate immunity, which highlighted the broader functionality of rhabdovirus matrix protein apart from being a structural protein. This study also revealed a previously unrecognized mechanism underlying SVCV immune evasion by inhibiting the IFN response by targeting the MAVS/TRAF3 signaling axis.
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37
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Wang W, Shi B, Cong R, Hao M, Peng Y, Yang H, Song J, Feng D, Zhang N, Li D. RING-finger E3 ligases regulatory network in PI3K/AKT-mediated glucose metabolism. Cell Death Dis 2022; 8:372. [PMID: 36002460 PMCID: PMC9402544 DOI: 10.1038/s41420-022-01162-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 08/05/2022] [Accepted: 08/09/2022] [Indexed: 12/21/2022]
Abstract
The phosphatidylinositol 3-kinase (PI3K)/AKT signaling pathway plays an essential role in glucose metabolism, promoting glycolysis and resisting gluconeogenesis. PI3K/AKT signaling can directly alter glucose metabolism by phosphorylating several metabolic enzymes or regulators of nutrient transport. It can indirectly promote sustained aerobic glycolysis by increasing glucose transporters and glycolytic enzymes, which are mediated by downstream transcription factors. E3 ubiquitin ligase RING-finger proteins are mediators of protein post-translational modifications and include the cullin-RING ligase complexes, the tumor necrosis factor receptor-associated family, the tripartite motif family and etc. Some members of the RING family play critical roles in regulating cell signaling and are involved in the development and progression of various metabolic diseases, such as cancer, diabetes, and dyslipidemia. And with the progression of modern research, as a negative or active regulator, the RING-finger adaptor has been found to play an indispensable role in PI3K/AKT signaling. However, no reviews have comprehensively clarified the role of RING-finger E3 ligases in PI3K/AKT-mediated glucose metabolism. Therefore, in this review, we focus on the regulation and function of RING ligases in PI3K/AKT-mediated glucose metabolism to establish new insights into the prevention and treatment of metabolic diseases.
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Affiliation(s)
- Wenke Wang
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - Bei Shi
- Department of Physiology, School of Life Sciences, China Medical University, Shenyang, China
| | - Ruiting Cong
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - Mingjun Hao
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yuanyuan Peng
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - Hongyue Yang
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jiahui Song
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - Di Feng
- Education Center for Clinical Skill Practice, China Medical University, Shenyang, China
| | - Naijin Zhang
- Department of Cardiology, the First Hospital of China Medical University, Shenyang, Liaoning, China.
| | - Da Li
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China.
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38
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Liu X, Deng Y, Huang Y, Ye J, Xie S, He Q, Chen Y, Lin Y, Liang R, Wei J, Li Y, Zhang J. Nasopharyngeal Carcinoma Progression: Accumulating Genomic Instability and Persistent Epstein–Barr Virus Infection. Curr Oncol 2022; 29:6035-6052. [PMID: 36135044 PMCID: PMC9498130 DOI: 10.3390/curroncol29090475] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 08/09/2022] [Accepted: 08/19/2022] [Indexed: 12/01/2022] Open
Abstract
Genomic instability facilitates the evolution of cells, tissues, organs, and species. The progression of human malignancies can be regarded as the accumulation of genomic instability, which confers a high evolutionary potential for tumor cells to adapt to continuous changes in the tumor microenvironment. Nasopharyngeal carcinoma (NPC) is a head-and-neck squamous-cell carcinoma closely associated with Epstein–Barr virus (EBV) infection. NPC progression is driven by a combination of accumulated genomic instability and persistent EBV infection. Here, we present a review of the key characteristics of genomic instability in NPC and the profound implications of EBV infection. We further discuss the significance of profiling genomic instability for the assessment of disease progression and treatment efficacy, as well as the opportunities and challenges of targeted therapies for NPC based on its unique genomic instability.
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Affiliation(s)
- Xue Liu
- Department of Medical Oncology, Guangxi Medical University Cancer Hospital, 71 Hedi Road, Nanning 530021, China
| | - Yayan Deng
- Department of Medical Oncology, Guangxi Medical University Cancer Hospital, 71 Hedi Road, Nanning 530021, China
| | - Yujuan Huang
- Department of Medical Oncology, Guangxi Medical University Cancer Hospital, 71 Hedi Road, Nanning 530021, China
| | - Jiaxiang Ye
- Department of Medical Oncology, Guangxi Medical University Cancer Hospital, 71 Hedi Road, Nanning 530021, China
| | - Sifang Xie
- Department of Otolaryngology & Head and Neck, The People’s Hospital of Guangxi Zhuang Autonomous Region, Guangxi Academy of Medical Sciences, 6 Taoyuan Road, Nanning 530021, China
| | - Qian He
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Yong Chen
- Department of Medical Oncology, Guangxi Medical University Cancer Hospital, 71 Hedi Road, Nanning 530021, China
| | - Yan Lin
- Department of Medical Oncology, Guangxi Medical University Cancer Hospital, 71 Hedi Road, Nanning 530021, China
| | - Rong Liang
- Department of Medical Oncology, Guangxi Medical University Cancer Hospital, 71 Hedi Road, Nanning 530021, China
| | - Jiazhang Wei
- Department of Otolaryngology & Head and Neck, The People’s Hospital of Guangxi Zhuang Autonomous Region, Guangxi Academy of Medical Sciences, 6 Taoyuan Road, Nanning 530021, China
| | - Yongqiang Li
- Department of Medical Oncology, Guangxi Medical University Cancer Hospital, 71 Hedi Road, Nanning 530021, China
- Correspondence: (Y.L.); (J.Z.)
| | - Jinyan Zhang
- Department of Medical Oncology, Guangxi Medical University Cancer Hospital, 71 Hedi Road, Nanning 530021, China
- Correspondence: (Y.L.); (J.Z.)
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The Unfolded-Protein Response Triggers the Arthropod Immune Deficiency Pathway. mBio 2022; 13:e0070322. [PMID: 35862781 PMCID: PMC9426425 DOI: 10.1128/mbio.00703-22] [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] [Indexed: 11/20/2022] Open
Abstract
The insect immune deficiency (IMD) pathway is a defense mechanism that senses and responds to Gram-negative bacteria. Ticks lack genes encoding upstream components that initiate the IMD pathway. Despite this deficiency, core signaling molecules are present and functionally restrict tick-borne pathogens. The molecular events preceding activation remain undefined. Here, we show that the unfolded-protein response (UPR) initiates the IMD network. The endoplasmic reticulum (ER) stress receptor IRE1α is phosphorylated in response to tick-borne bacteria but does not splice the mRNA encoding XBP1. Instead, through protein modeling and reciprocal pulldowns, we show that Ixodes IRE1α complexes with TRAF2. Disrupting IRE1α-TRAF2 signaling blocks IMD pathway activation and diminishes the production of reactive oxygen species. Through in vitro, in vivo, and ex vivo techniques, we demonstrate that the UPR-IMD pathway circuitry limits the Lyme disease-causing spirochete Borrelia burgdorferi and the rickettsial agents Anaplasma phagocytophilum and A. marginale (anaplasmosis). Altogether, our study uncovers a novel linkage between the UPR and the IMD pathway in arthropods. IMPORTANCE The ability of an arthropod to harbor and transmit pathogens is termed "vector competency." Many factors influence vector competency, including how arthropod immune processes respond to the microbe. Divergences in innate immunity between arthropods are increasingly being reported. For instance, although ticks lack genes encoding key upstream molecules of the immune deficiency (IMD) pathway, it is still functional and restricts causative agents of Lyme disease (Borrelia burgdorferi) and anaplasmosis (Anaplasma phagocytophilum). How the IMD pathway is activated in ticks without classically defined pathway initiators is not known. Here, we found that a cellular stress response network, the unfolded-protein response (UPR), functions upstream to induce the IMD pathway and restrict transmissible pathogens. Collectively, this explains how the IMD pathway can be activated in the absence of canonical pathway initiators. Given that the UPR is highly conserved, UPR-initiated immunity may be a fundamental principle impacting vector competency across arthropods.
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Huang J, Lu R, Zhong D, Weng Y, Liao L. A Novel Necroptosis-Associated IncRNAs Signature for Prognosis of Head and Neck Squamous Cell Carcinoma. Front Genet 2022; 13:907392. [PMID: 35754839 PMCID: PMC9213787 DOI: 10.3389/fgene.2022.907392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 05/04/2022] [Indexed: 11/13/2022] Open
Abstract
Purpose: The prognosis of head and neck squamous cell carcinoma (HNSCC) is poor. Necroptosis is a novel programmed form of necrotic cell death. The prognostic value of necroptosis-associated lncRNAs expression in HNSCC has not been explored. Methods: We downloaded mRNA expression data of HNSCC patients from TCGA databases. Prognostic lncRNAs were identified by univariate Cox regression. LASSO was used to establish a model with necroptosis-related lncRNAs. Kaplan-Meier analysis and ROC were applied to verify the model. Finally, functional studies including gene set enrichment analyses, immune microenvironment analysis, and anti-tumor compound IC50 prediction were performed. Results: We identified 1,117 necroptosis-related lncRNAs. The Cox regression showed 55 lncRNAs were associated with patient survival (p < 0.05). The risk model of 24- lncRNAs signature categorized patients into high and low risk groups. The patients in the low-risk group survived longer than the high-risk group (p < 0.001). Validation assays including ROC curve, nomogram and correction curves confirmed the prediction capability of the 24-lncRNA risk mode. Functional studies showed the two patient groups had distinct immunity conditions and IC50. Conclusion: The 24-lncRNA model has potential to guide treatment of HNSCC. Future clinical studies are needed to verify the model.
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Affiliation(s)
- Jing Huang
- Department of Pharmacy, Fujian Medical University Cancer Hospital and Fujian Cancer Hospital, Fuzhou, China
| | - Rong Lu
- Department of Laboratory Medicine, The First Affiliated Hospital of Xiamen University, Xiamen Key Laboratory of Genetic Testing, School of Medicine, Xiamen University, Xiamen, China
| | - Dongta Zhong
- Department of Medical Oncology, Union Hospital of Fujian Medical University, Fuzhou, China
| | - Youliang Weng
- Department of Radiation Oncology, Fujian Medical University Cancer Hospital and Fujian Cancer Hospital, Fuzhou 350014, China
| | - Lianming Liao
- Center of Laboratory Medicine, Union Hospital of Fujian Medical University, Fuzhou, China
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Kot EF, Franco ML, Vasilieva EV, Shabalkina AV, Arseniev AS, Goncharuk SA, Mineev KS, Vilar M. Intrinsically disordered regions couple the ligand binding and kinase activation of Trk neurotrophin receptors. iScience 2022; 25:104348. [PMID: 35601915 PMCID: PMC9117555 DOI: 10.1016/j.isci.2022.104348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 03/22/2022] [Accepted: 04/27/2022] [Indexed: 11/19/2022] Open
Abstract
Receptor tyrosine kinases (RTKs) are key players in development and several diseases. Understanding the molecular mechanism of RTK activation by its ligand could lead to the design of new RTK inhibitors. How the extracellular domain is coupled to the intracellular kinase domain is a matter of debate. Ligand-induced dimerization and ligand-induced conformational change of pre-formed dimers are two of the most proposed models. Recently we proposed that TrkA, the RTK for nerve growth factor (NGF), is activated by rotation of the transmembrane domain (TMD) pre-formed dimers upon NGF binding. However, one of the unsolved issues is how the ligand binding is conformationally coupled to the TMD rotation if unstructured extracellular juxtamembrane (eJTM) regions separate them. Here we use nuclear magnetic resonance in bicelles and functional studies to demonstrate that eJTM regions from the Trk family are intrinsically disordered and couple the ligand-binding domains and TMDs possibly via the interaction with NGF. Extracellular juxtamembrane region is required for NGF binding and TrkA activation TrkA extracellular juxtamembrane region is unstructured and flexible This region couples neurotrophin-binding and transmembrane domain rotation The extracellular juxtamembrane region might play a role in neurotrophin recognition
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Affiliation(s)
- Erik F. Kot
- Moscow Institute of Physics and Technology, 141707 Dolgoprudnyi, Russian Federation
| | - María L. Franco
- Molecular Basis of Neurodegeneration Unit, Institute of Biomedicine of València (IBV-CSIC), C/ Jaume Roig 11, 46010 València, Spain
| | - Ekaterina V. Vasilieva
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, 117997 Moscow, Russian Federation
| | - Alexandra V. Shabalkina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, 117997 Moscow, Russian Federation
- Moscow Institute of Physics and Technology, 141707 Dolgoprudnyi, Russian Federation
| | - Alexander S. Arseniev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, 117997 Moscow, Russian Federation
- Moscow Institute of Physics and Technology, 141707 Dolgoprudnyi, Russian Federation
- Corresponding author
| | - Sergey A. Goncharuk
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, 117997 Moscow, Russian Federation
- Moscow Institute of Physics and Technology, 141707 Dolgoprudnyi, Russian Federation
- Corresponding author
| | - Konstantin S. Mineev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, 117997 Moscow, Russian Federation
- Moscow Institute of Physics and Technology, 141707 Dolgoprudnyi, Russian Federation
- Corresponding author
| | - Marçal Vilar
- Molecular Basis of Neurodegeneration Unit, Institute of Biomedicine of València (IBV-CSIC), C/ Jaume Roig 11, 46010 València, Spain
- Corresponding author
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Hao M, Zhang J, Sun M, Diao K, Wang J, Li S, Cao Q, Dai S, Mi X. TRAF4 Inhibits the Apoptosis and Promotes the Proliferation of Breast Cancer Cells by Inhibiting the Ubiquitination of Spindle Assembly-Associated Protein Eg5. Front Oncol 2022; 12:855139. [PMID: 35692762 PMCID: PMC9174544 DOI: 10.3389/fonc.2022.855139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 04/19/2022] [Indexed: 11/13/2022] Open
Abstract
Tumor necrosis factor receptor associated factor 4 (TRAF4) is a RING domain E3 ubiquitin ligase that mediates the ubiquitination of various proteins and plays an important role in driving tumor progression. By studying the relationship between TRAF4 and Eg5, a member of the kinesin family that plays a critical role in spindle assembly, we demonstrated that TRAF4 regulated Eg5 ubiquitination and contributed to Eg5-mediated breast cancer proliferation and inhibited breast cancer apoptosis. TRAF4 and Eg5 were both highly expressed in breast cancer and their protein level was positively correlated. Relying on its Zinc fingers domain, TRAF4 interacted with Eg5 in the cytoplasm of breast cancer cells. TRAF4 was a mitosis-related protein, and by up-regulating the protein level of Eg5 TRAF4 participated in spindle assembly. Loss of TRAF4 resulted in monopolar spindles formation, but loss of function could be rescued by Eg5. Relying on its RING domain, TRAF4 up-regulated Eg5 protein levels by inhibition of Eg5 ubiquitination, thus stabilizing Eg5 protein level during mitosis. Furthermore, we found that Smurf2, a TRAF4-targeted ubiquitination substrate, mediated the regulation of Eg5 ubiquitination by TRAF4. TRAF4 inhibited the interaction between Smurf2 and Eg5, and down-regulated the protein level of Smurf2 by promoting its ubiquitination, thereby inhibited the Smurf2-catalyzed ubiquitination of Eg5 and up-regulated Eg5 protein levels. We also demonstrate that TRAF4 plays an important role in promoting cell proliferation and in inhibiting cell apoptosis induced by Eg5. In summary, our study suggests a new direction for investigating the role of TRAF4 in driving breast cancer progression.
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Affiliation(s)
- Miaomiao Hao
- Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang, China
- Department of Pathology, Shanghai Ninth People’s Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Jie Zhang
- Department of Pathology, School of Basic Medical Sciences, Hebei University, Baoding, China
| | - Mingfang Sun
- Department of Pathology, College of Basic Medical Sciences, First Affiliated Hospital, China Medical University, Shenyang, China
| | - Kexin Diao
- Department of Pathology, College of Basic Medical Sciences, First Affiliated Hospital, China Medical University, Shenyang, China
| | - Jian Wang
- Department of Pathology, College of Basic Medical Sciences, First Affiliated Hospital, China Medical University, Shenyang, China
| | - Shiping Li
- Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Qixue Cao
- Department of Pathology, Shanghai Ninth People’s Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Shundong Dai
- Department of Pathology, Shanghai Ninth People’s Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Xiaoyi Mi
- Department of Pathology, College of Basic Medical Sciences, First Affiliated Hospital, China Medical University, Shenyang, China
- *Correspondence: Xiaoyi Mi,
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Swanson S, Sivaraman V, Grigoryan G, Keating AE. Tertiary motifs as building blocks for the design of protein‐binding peptides. Protein Sci 2022; 31:e4322. [PMID: 35634780 PMCID: PMC9088223 DOI: 10.1002/pro.4322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 04/12/2022] [Accepted: 04/14/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Sebastian Swanson
- Department of Biology Massachusetts Institute of Technology Cambridge Massachusetts USA
| | - Venkatesh Sivaraman
- Department of Biology Massachusetts Institute of Technology Cambridge Massachusetts USA
| | - Gevorg Grigoryan
- Department of Computer Science Dartmouth College Hanover New Hampshire USA
| | - Amy E. Keating
- Department of Biology Massachusetts Institute of Technology Cambridge Massachusetts USA
- Department of Biological Engineering Massachusetts Institute of Technology Cambridge Massachusetts USA
- Koch Center for Integrative Cancer Research Massachusetts Institute of Technology Cambridge Massachusetts USA
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Lapin D, Johanndrees O, Wu Z, Li X, Parker JE. Molecular innovations in plant TIR-based immunity signaling. THE PLANT CELL 2022; 34:1479-1496. [PMID: 35143666 PMCID: PMC9153377 DOI: 10.1093/plcell/koac035] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 01/27/2022] [Indexed: 05/19/2023]
Abstract
A protein domain (Toll and Interleukin-1 receptor [TIR]-like) with homology to animal TIRs mediates immune signaling in prokaryotes and eukaryotes. Here, we present an overview of TIR evolution and the molecular versatility of TIR domains in different protein architectures for host protection against microbial attack. Plant TIR-based signaling emerges as being central to the potentiation and effectiveness of host defenses triggered by intracellular and cell-surface immune receptors. Equally relevant for plant fitness are mechanisms that limit potent TIR signaling in healthy tissues but maintain preparedness for infection. We propose that seed plants evolved a specialized protein module to selectively translate TIR enzymatic activities to defense outputs, overlaying a more general function of TIRs.
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Affiliation(s)
- Dmitry Lapin
- Department of Plant-Microbe Interactions, Max Planck Institute for Plant Breeding Research, Cologne 50829, Germany
- Plant-Microbe Interactions, Department of Biology, Utrecht University, Utrecht 3584 CH, The Netherlands
- Author for correspondence: (D.L.), (J.E.P.)
| | - Oliver Johanndrees
- Department of Plant-Microbe Interactions, Max Planck Institute for Plant Breeding Research, Cologne 50829, Germany
| | - Zhongshou Wu
- Michael Smith Labs and Department of Botany, University of British Columbia, Vancouver BC V6T 1Z4, Canada
| | - Xin Li
- Michael Smith Labs and Department of Botany, University of British Columbia, Vancouver BC V6T 1Z4, Canada
| | - Jane E Parker
- Department of Plant-Microbe Interactions, Max Planck Institute for Plant Breeding Research, Cologne 50829, Germany
- Cluster of Excellence on Plant Sciences (CEPLAS), Duesseldorf 40225, Germany
- Author for correspondence: (D.L.), (J.E.P.)
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Wu S, Sun M, Zhang L, Kang S, Liao J, Zhu Z, Chen H, Xu Z, Xu L, Zhang X, Wei J, Qin Q. Grouper TRAF3 inhibits nodavirus infection by regulating the STING-mediated antiviral signaling pathway. FISH & SHELLFISH IMMUNOLOGY 2022; 123:172-181. [PMID: 35276350 DOI: 10.1016/j.fsi.2022.03.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 02/28/2022] [Accepted: 03/03/2022] [Indexed: 06/14/2023]
Abstract
Tumor necrosis factor (TNF) receptor-associated factors (TRAFs) are major signal transducers for the TNF and interleukin-1/Toll-like receptor superfamilies that transduce signals from various immune receptors. To investigate the interaction of TRAF3 and other proteins in signaling pathways and to identify its antiviral function in teleosts, we cloned and characterized a TRAF3 homolog from orange-spotted grouper (Epinephelus coioides) (EcTRAF3). The open reading frame of EcTRAF3 consists of 1767 base pairs encoding a 588 amino acid protein, and the predicted molecular mass is 66.71 kDa EcTRAF3 shares 99.83% identity with TRAF3 of Epinephelus lanceolatus. Expression analysis revealed that EcTRAF3 was broadly distributed in examined tissues and was up-regulated under polyinosinic-polycytidylic acid and red-spotted grouper nervous necrosis virus (RGNNV) stimulation in vivo. EcTRAF3 was identified as a cytosolic protein based on fluorescence microscopy analysis. Overexpression of EcTRAF3 inhibited RGNNV replication in grouper spleen cells, and it interacted with the coat protein of RGNNV. Overexpression of EcTRAF3 also induced the activation of interferon β (IFN-β), IFN-stimulated response element (ISRE), and nuclear factor-κB (NF-κB). EcTRAF3 co-transfected with Stimulator of Interferon Genes (STING) of grouper (EcSTING) induced a significantly higher level of IFN-β promoter activity. Moreover, EcTRAF3 interacted with EcSTING, implying that EcTRAF3 may function as an enhancer in EcSTING-mediated signaling. Taken together, our results suggest that EcTRAF3 negatively regulates the RGNNV-induced cellular antiviral response and plays an important role in the immune response system of fish.
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Affiliation(s)
- Siting Wu
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China
| | - Mengshi Sun
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China
| | - Luhao Zhang
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China
| | - Shaozhu Kang
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China
| | - Jiaming Liao
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China
| | - Zheng Zhu
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China
| | - Hong Chen
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China
| | - Zhuqing Xu
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China
| | - Linting Xu
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China
| | - Xin Zhang
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China
| | - Jingguang Wei
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China.
| | - Qiwei Qin
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, PR China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266000, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), 528478, China.
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Palumbo C, Mecchia A, Bocedi A, Aquilano K, Lettieri-Barbato D, Rosina M, Di Venere A, Rodolfo C, Caccuri AM. Revisited role of TRAF2 and TRAF2 C-terminal domain in endoplasmic reticulum stress-induced autophagy in HAP1 leukemia cells. Int J Biochem Cell Biol 2022; 145:106193. [PMID: 35257890 DOI: 10.1016/j.biocel.2022.106193] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 02/18/2022] [Accepted: 03/03/2022] [Indexed: 12/01/2022]
Abstract
The scaffold protein Tumor Necrosis Factor Receptor-Associated Factor 2 (TRAF2) has been reported to play a key role in the endoplasmic reticulum (ER) stress-induced activation of c-Jun N-terminal Kinase (JNK) and hence autophagy. Autophagy is a highly conserved catabolic process, whose dysregulation is involved in the pathogenesis of various human diseases, including cancer. We investigated the involvement of TRAF2 in autophagy regulation in the human leukemic HAP1 cell line, under both basal and ER stress conditions. In TRAF2-knockout HAP1 cell line (KO), the basal autophagic flux was higher than in the parental cell line (WT). Moreover, tunicamycin-induced ER stress stimulated JNK activation and autophagy both in WT and KO HAP1. On the other hand, re-expression of a TRAF2 C-terminal fragment (residues ,310-501), in a TRAF2-KO cellular background, rendered HAP1 cells unable to activate both JNK and autophagy upon ER stress induction. Of note, this apparent dominant negative effect of the C-terminal fragment was observed even in the absence of the endogenous, full-length TRAF2 molecule. Furthermore, the expression of the C-terminal fragment resulted in both protein kinase B (AKT) pathway activation and increased resistance to the toxic effects induced by prolonged ER stress conditions. These findings indicate that TRAF2 is dispensable for the activation of both JNK and autophagy in HAP1 cells, while the TRAF2 C-terminal domain may play an autonomous role in regulating the cellular response to ER stress.
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Affiliation(s)
- Camilla Palumbo
- Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata, Rome, Italy
| | | | - Alessio Bocedi
- Department of Chemical Sciences and Technologies, University of Rome Tor Vergata, Rome, Italy
| | - Katia Aquilano
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - Daniele Lettieri-Barbato
- Department of Biology, University of Rome Tor Vergata, Rome, Italy; IRCCS-Fondazione Santa Lucia, Rome, Italy
| | - Marco Rosina
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - Almerinda Di Venere
- Department of Experimental Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Carlo Rodolfo
- Department of Biology, University of Rome Tor Vergata, Rome, Italy; Department of Pediatric Onco-Hematology and Cell and Gene Therapy, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
| | - Anna Maria Caccuri
- Department of Chemical Sciences and Technologies, University of Rome Tor Vergata, Rome, Italy; The NAST Centre for Nanoscience and Nanotechnology and Innovative Instrumentation, University of Rome Tor Vergata, Rome, Italy.
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Sun J, Yang Q, Liu E, Chen D, Sun Q. KIZ/GM114 Balances the NF-ĸB Signaling by Antagonizing the Association of TRAF2/6 With Their Upstream Adaptors. Front Cell Dev Biol 2022; 10:877039. [PMID: 35433693 PMCID: PMC9008698 DOI: 10.3389/fcell.2022.877039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 03/15/2022] [Indexed: 12/20/2022] Open
Abstract
NF-κB signaling is a pivotal regulator of the inflammatory response and it must be tightly controlled to avoid an excessive inflammatory response that may lead to human chronic inflammatory and autoimmune diseases. Thus, how NF-κB signaling is precisely controlled is a long-standing question in the field. TRAF family proteins function as key adaptors to mediate NF-κB signaling induced by various receptors. Here, we characterize KIZ/GM114 as a negative regulator balancing the NF-κB signaling. Mechanistically, KIZ/GM114 binds TRAF6/2 by targeting the TRAF domains to antagonize the TRAF6-IRAK1 association or the TRAF2-TRADD association, consequently reducing the IL-1β/LPS/TNFα-induced NF-κB activation. Importantly, upon dextran sulfate sodium treatment, Gm114 deficiency induces a stronger inflammatory response, more severe acute colitis and lower survival rate in mice compared with control mice. Collectively, our study not only identifies KIZ/GM114 as a negative regulator to balance the NF-κB signaling, but it also implies a new strategy for limiting excessive inflammatory response.
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Affiliation(s)
- Jiawei Sun
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Institute of Stem Cells and Regeneration, Chinese Academy of Sciences, Beijing, China
- School of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Qili Yang
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Institute of Stem Cells and Regeneration, Chinese Academy of Sciences, Beijing, China
- School of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Enping Liu
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Institute of Stem Cells and Regeneration, Chinese Academy of Sciences, Beijing, China
- School of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Dahua Chen
- Institute of Biomedical Research, Yunnan University, Kunming, China
- *Correspondence: Dahua Chen, , ; Qinmiao Sun,
| | - Qinmiao Sun
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Institute of Stem Cells and Regeneration, Chinese Academy of Sciences, Beijing, China
- School of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- *Correspondence: Dahua Chen, , ; Qinmiao Sun,
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Gehi BR, Gadhave K, Uversky VN, Giri R. Intrinsic disorder in proteins associated with oxidative stress-induced JNK signaling. Cell Mol Life Sci 2022; 79:202. [PMID: 35325330 PMCID: PMC11073203 DOI: 10.1007/s00018-022-04230-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 03/01/2022] [Accepted: 03/03/2022] [Indexed: 01/02/2023]
Abstract
The c-Jun N-terminal kinase (JNK) signaling cascade is a mitogen-activated protein kinase (MAPK) signaling pathway that can be activated in response to a wide range of environmental stimuli. Based on the type, degree, and duration of the stimulus, the JNK signaling cascade dictates the fate of the cell by influencing gene expression through its substrate transcription factors. Oxidative stress is a result of a disturbance in the pro-oxidant/antioxidant homeostasis of the cell and is associated with a large number of diseases, such as neurodegenerative disorders, cancer, diabetes, cardiovascular diseases, and disorders of the immune system, where it activates the JNK signaling pathway. Among different biological roles ascribed to the intrinsically disordered proteins (IDPs) and hybrid proteins containing ordered domains and intrinsically disordered protein regions (IDPRs) are signaling hub functions, as intrinsic disorder allows proteins to undertake multiple interactions, each with a different consequence. In order to ensure precise signaling, the cellular abundance of IDPs is highly regulated, and mutations or changes in abundance of IDPs/IDPRs are often associated with disease. In this study, we have used a combination of six disorder predictors to evaluate the presence of intrinsic disorder in proteins of the oxidative stress-induced JNK signaling cascade, and as per our findings, none of the 18 proteins involved in this pathway are ordered. The highest level of intrinsic disorder was observed in the scaffold proteins, JIP1, JIP2, JIP3; dual specificity phosphatases, MKP5, MKP7; 14-3-3ζ and transcription factor c-Jun. The MAP3Ks, MAP2Ks, MAPKs, TRAFs, and thioredoxin were the proteins that were predicted to be moderately disordered. Furthermore, to characterize the predicted IDPs/IDPRs in the proteins of the JNK signaling cascade, we identified the molecular recognition features (MoRFs), posttranslational modification (PTM) sites, and short linear motifs (SLiMs) associated with the disordered regions. These findings will serve as a foundation for experimental characterization of disordered regions in these proteins, which represents a crucial step for a better understanding of the roles of IDPRs in diseases associated with this important pathway.
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Affiliation(s)
- Bhuvaneshwari R Gehi
- School of Basic Sciences, Indian Institute of Technology Mandi, VPO Kamand, Mandi, Himachal Pradesh, 175005, India
- Molecular Biophysics Unit (MBU), Indian Institute of Science, Bengaluru, 560012, India
| | - Kundlik Gadhave
- School of Basic Sciences, Indian Institute of Technology Mandi, VPO Kamand, Mandi, Himachal Pradesh, 175005, India
| | - Vladimir N Uversky
- Department of Molecular Medicine and Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL, USA.
- Laboratory of New Methods in Biology, Institute for Biological Instrumentation of the Russian Academy of Sciences, Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences", Pushchino, Moscow region, 142290, Russia.
| | - Rajanish Giri
- School of Basic Sciences, Indian Institute of Technology Mandi, VPO Kamand, Mandi, Himachal Pradesh, 175005, India.
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49
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Heckel F, Turaj AH, Fisher H, Chan HTC, Marshall MJE, Dadas O, Penfold CA, Inzhelevskaya T, Mockridge CI, Alvarado D, Tews I, Keler T, Beers SA, Cragg MS, Lim SH. Agonistic CD27 antibody potency is determined by epitope-dependent receptor clustering augmented through Fc-engineering. Commun Biol 2022; 5:229. [PMID: 35288635 PMCID: PMC8921514 DOI: 10.1038/s42003-022-03182-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 02/17/2022] [Indexed: 12/12/2022] Open
Abstract
Agonistic CD27 monoclonal antibodies (mAb) have demonstrated impressive anti-tumour efficacy in multiple preclinical models but modest clinical responses. This might reflect current reagents delivering suboptimal CD27 agonism. Here, using a novel panel of CD27 mAb including a clinical candidate, we investigate the determinants of CD27 mAb agonism. Epitope mapping and in silico docking analysis show that mAb binding to membrane-distal and external-facing residues are stronger agonists. However, poor epitope-dependent agonism could partially be overcome by Fc-engineering, using mAb isotypes that promote receptor clustering, such as human immunoglobulin G1 (hIgG1, h1) with enhanced affinity to Fc gamma receptor (FcγR) IIb, or hIgG2 (h2). This study provides the critical knowledge required for the development of agonistic CD27 mAb that are potentially more clinically efficacious.
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Affiliation(s)
- Franziska Heckel
- Centre for Cancer Immunology, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
- Cancer Research UK Research Centre, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
| | - Anna H Turaj
- Centre for Cancer Immunology, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
- Cancer Research UK Research Centre, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
| | - Hayden Fisher
- Centre for Cancer Immunology, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
- Cancer Research UK Research Centre, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
- Institute for Life Sciences, University of Southampton, Highfield Campus, Southampton, SO17 1BJ, UK
- Biological Sciences, University of Southampton, Highfield Campus, Southampton, SO17 1BJ, UK
| | - H T Claude Chan
- Centre for Cancer Immunology, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
- Cancer Research UK Research Centre, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
| | - Michael J E Marshall
- Centre for Cancer Immunology, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
- Cancer Research UK Research Centre, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
| | - Osman Dadas
- Centre for Cancer Immunology, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
- Cancer Research UK Research Centre, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
| | - Christine A Penfold
- Centre for Cancer Immunology, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
- Cancer Research UK Research Centre, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
| | - Tatyana Inzhelevskaya
- Centre for Cancer Immunology, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
- Cancer Research UK Research Centre, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
| | - C Ian Mockridge
- Centre for Cancer Immunology, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
- Cancer Research UK Research Centre, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
| | | | - Ivo Tews
- Institute for Life Sciences, University of Southampton, Highfield Campus, Southampton, SO17 1BJ, UK
- Biological Sciences, University of Southampton, Highfield Campus, Southampton, SO17 1BJ, UK
| | - Tibor Keler
- Celldex Therapeutics, Inc., Hampton, NJ, 08827, USA
| | - Stephen A Beers
- Centre for Cancer Immunology, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
- Cancer Research UK Research Centre, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
| | - Mark S Cragg
- Centre for Cancer Immunology, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
- Cancer Research UK Research Centre, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
| | - Sean H Lim
- Centre for Cancer Immunology, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK.
- Cancer Research UK Research Centre, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK.
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50
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Chen Z, Zeng Y, Wei Y, Wang Q, Liu M, Zhang B, Liu J, Zhu Q, Xu S. Influenza D virus Matrix protein 1 restricts the type I interferon response by degrading TRAF6. Virology 2022; 568:1-11. [DOI: 10.1016/j.virol.2022.01.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 01/06/2022] [Accepted: 01/09/2022] [Indexed: 01/04/2023]
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