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Kim CE, Lee SM, Yoon EH, Won HJ, Jung YJ, Jegal Y, Kim DH, Kwon B, Seo SK. Induction of indoleamine 2,3-dioxygenase 1 expression in neurons of the central nervous system through inhibition of histone deacetylases blocks the progression of experimental autoimmune encephalomyelitis. Int Immunopharmacol 2024; 134:112246. [PMID: 38759372 DOI: 10.1016/j.intimp.2024.112246] [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: 02/05/2024] [Revised: 05/03/2024] [Accepted: 05/08/2024] [Indexed: 05/19/2024]
Abstract
BACKGROUND A wide array of histone deacetylase (HDAC) inhibitors and aryl hydrocarbon receptor (AHR) agonists commonly arrest experimental autoimmune encephalomyelitis (EAE). However, it is not known whether HDAC inhibition is linked to the AHR signaling pathway in EAE. METHODS We investigated how the pan-HDAC inhibitor SB939 (pracinostat) exerted immunoregulatory action in the myelin oligodendrocyte glycoprotein 35-55 (MOG35-55)-induced EAE mouse model by evaluating changes in of signal transducer and activator of transcription 3 (STAT3) acetylation and the expression of indoleamine 2,3-dioxygenase 1 (IDO1) and AHR in inflamed spinal cords during EAE evolution. We proved the involvement of IDO1 and the AHR in SB939-mediated immunosuppression using Ido1-/- and Ahr-/- mice. RESULTS Administration with SB939 halted EAE progression, which depended upon IDO1 expression in neurons of the central nervous system (CNS). Our in vitro and in vivo studies demonstrated that SB939 sustained the interleukin-6-induced acetylation of STAT3, resulting in the stable transcriptional activation of Ido1. The therapeutic effect of SB939 also required the AHR, which is expressed mainly in CD4+ T cells and macrophages in CNS disease lesions. Finally, SB939 was shown to markedly reduce the proliferation of CD4+ T cells in inflamed neuronal tissues but not in the spleen or draining lymph nodes. CONCLUSIONS Overall, our results suggest that IDO1 tryptophan metabolites produced by neuronal cells may act on AHR in pathogenic CD4+ T cells in a paracrine fashion in the CNS and that the specific induction of IDO1 expression in neurons at disease-afflicted sites can be considered a therapeutic approach to block the progression of multiple sclerosis without affecting systemic immunity.
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MESH Headings
- Animals
- Encephalomyelitis, Autoimmune, Experimental/drug therapy
- Encephalomyelitis, Autoimmune, Experimental/immunology
- Indoleamine-Pyrrole 2,3,-Dioxygenase/genetics
- Indoleamine-Pyrrole 2,3,-Dioxygenase/metabolism
- Indoleamine-Pyrrole 2,3,-Dioxygenase/antagonists & inhibitors
- Histone Deacetylase Inhibitors/pharmacology
- Histone Deacetylase Inhibitors/therapeutic use
- STAT3 Transcription Factor/metabolism
- Mice, Inbred C57BL
- Neurons/drug effects
- Neurons/pathology
- Neurons/metabolism
- Mice, Knockout
- Mice
- Receptors, Aryl Hydrocarbon/metabolism
- Receptors, Aryl Hydrocarbon/genetics
- Female
- Spinal Cord/pathology
- Spinal Cord/metabolism
- Spinal Cord/immunology
- Spinal Cord/drug effects
- Myelin-Oligodendrocyte Glycoprotein/immunology
- Central Nervous System/immunology
- Central Nervous System/drug effects
- Central Nervous System/metabolism
- Central Nervous System/pathology
- Hydroxamic Acids/pharmacology
- Hydroxamic Acids/therapeutic use
- Disease Progression
- Histone Deacetylases/metabolism
- Histone Deacetylases/genetics
- Peptide Fragments/pharmacology
- Basic Helix-Loop-Helix Transcription Factors/metabolism
- Basic Helix-Loop-Helix Transcription Factors/genetics
- Interleukin-6/metabolism
- Interleukin-6/genetics
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Affiliation(s)
- Chae Eun Kim
- Department of Microbiology and Immunology, College of Medicine Inje University, Busan, Republic of Korea.
| | - Soung-Min Lee
- Department of Microbiology and Immunology, College of Medicine Inje University, Busan, Republic of Korea.
| | - Eun Hye Yoon
- Department of Microbiology and Immunology, College of Medicine Inje University, Busan, Republic of Korea.
| | - Hae Jeong Won
- Department of Microbiology and Immunology, College of Medicine Inje University, Busan, Republic of Korea.
| | - Yu Jin Jung
- Basic and Clinical Convergence Research Institute, University of Ulsan, Ulsan, Republic of Korea.
| | - Yangjin Jegal
- Basic and Clinical Convergence Research Institute, University of Ulsan, Ulsan, Republic of Korea; Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, College of Medicine, University of Ulsan, Ulsan, Republic of Korea.
| | - Dong Hyun Kim
- Department of Pharmacology, College of Medicine, Inje University, Busan, Republic of Korea.
| | - Byungsuk Kwon
- Basic and Clinical Convergence Research Institute, University of Ulsan, Ulsan, Republic of Korea; School of Biological Sciences, University of Ulsan, Ulsan, Republic of Korea.
| | - Su-Kil Seo
- Department of Microbiology and Immunology, College of Medicine Inje University, Busan, Republic of Korea.
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2
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Diallo M, Pimenta C, Murtinheira F, Martins-Alves D, Pinto FR, da Costa AA, Letra-Vilela R, Martin V, Rodriguez C, Rodrigues MS, Herrera F. Asymmetric post-translational modifications regulate the nuclear translocation of STAT3 homodimers in response to leukemia inhibitory factor. Cell Oncol (Dordr) 2024; 47:1065-1070. [PMID: 38150153 PMCID: PMC11219437 DOI: 10.1007/s13402-023-00911-9] [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] [Accepted: 12/08/2023] [Indexed: 12/28/2023] Open
Abstract
STAT3 is a pleiotropic transcription factor overactivated in 70% of solid tumours. We have recently reported that inactivating mutations on residues susceptible to post-translational modifications (PTMs) in only one of the monomers (i.e. asymmetric) caused changes in the cellular distribution of STAT3 homodimers. Here, we used more controlled experimental conditions, i.e. without the interference of endogenous STAT3 (STAT3-/- HeLa cells) and in the presence of a defined cytokine stimulus (Leukemia Inhibitory Factor, LIF), to provide further evidence that asymmetric PTMs affect the nuclear translocation of STAT3 homodimers. Time-lapse microscopy for 20 min after LIF stimulation showed that S727 dephosphorylation (S727A) and K685 inactivation (K685R) slightly enhanced the nuclear translocation of STAT3 homodimers, while K49 inactivation (K49R) delayed STAT3 nuclear translocation. Our findings suggest that asymmetrically modified STAT3 homodimers could be a new level of STAT3 regulation and, therefore, a potential target for cancer therapy.
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Affiliation(s)
- Mickael Diallo
- BioISI - Instituto de Biosistemas e Ciências Integrativas, Faculdade de Ciências da Universidade de Lisboa, Lisbon, 1749-016, Portugal
- MOSTMICRO Research Unit, Instituto de Tecnologia Química e Biológica (ITQB-NOVA), Universidade Nova de Lisboa, Oeiras, Portugal
| | - Constança Pimenta
- BioISI - Instituto de Biosistemas e Ciências Integrativas, Faculdade de Ciências da Universidade de Lisboa, Lisbon, 1749-016, Portugal
| | - Fernanda Murtinheira
- BioISI - Instituto de Biosistemas e Ciências Integrativas, Faculdade de Ciências da Universidade de Lisboa, Lisbon, 1749-016, Portugal
- MOSTMICRO Research Unit, Instituto de Tecnologia Química e Biológica (ITQB-NOVA), Universidade Nova de Lisboa, Oeiras, Portugal
| | - Daniela Martins-Alves
- BioISI - Instituto de Biosistemas e Ciências Integrativas, Faculdade de Ciências da Universidade de Lisboa, Lisbon, 1749-016, Portugal
| | - Francisco R Pinto
- BioISI - Instituto de Biosistemas e Ciências Integrativas, Faculdade de Ciências da Universidade de Lisboa, Lisbon, 1749-016, Portugal
| | - André Abrantes da Costa
- BioISI - Instituto de Biosistemas e Ciências Integrativas, Faculdade de Ciências da Universidade de Lisboa, Lisbon, 1749-016, Portugal
| | - Ricardo Letra-Vilela
- BioISI - Instituto de Biosistemas e Ciências Integrativas, Faculdade de Ciências da Universidade de Lisboa, Lisbon, 1749-016, Portugal
- MOSTMICRO Research Unit, Instituto de Tecnologia Química e Biológica (ITQB-NOVA), Universidade Nova de Lisboa, Oeiras, Portugal
| | - Vanesa Martin
- Departamento de Morfología y Biología Celular, Facultad de Medicina, University of Oviedo, c/Julian Claveria, Oviedo, 33006, Spain
- Instituto Universitario de Oncología del Principado de Asturias (IUOPA), Oviedo, Spain
| | - Carmen Rodriguez
- Departamento de Morfología y Biología Celular, Facultad de Medicina, University of Oviedo, c/Julian Claveria, Oviedo, 33006, Spain
- Instituto Universitario de Oncología del Principado de Asturias (IUOPA), Oviedo, Spain
| | - Mário S Rodrigues
- BioISI - Instituto de Biosistemas e Ciências Integrativas, Faculdade de Ciências da Universidade de Lisboa, Lisbon, 1749-016, Portugal
| | - Federico Herrera
- BioISI - Instituto de Biosistemas e Ciências Integrativas, Faculdade de Ciências da Universidade de Lisboa, Lisbon, 1749-016, Portugal.
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3
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Jiang H, Yang J, Li T, Wang X, Fan Z, Ye Q, Du Y. JAK/STAT3 signaling in cardiac fibrosis: a promising therapeutic target. Front Pharmacol 2024; 15:1336102. [PMID: 38495094 PMCID: PMC10940489 DOI: 10.3389/fphar.2024.1336102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 01/18/2024] [Indexed: 03/19/2024] Open
Abstract
Cardiac fibrosis is a serious health problem because it is a common pathological change in almost all forms of cardiovascular diseases. Cardiac fibrosis is characterized by the transdifferentiation of cardiac fibroblasts (CFs) into cardiac myofibroblasts and the excessive deposition of extracellular matrix (ECM) components produced by activated myofibroblasts, which leads to fibrotic scar formation and subsequent cardiac dysfunction. However, there are currently few effective therapeutic strategies protecting against fibrogenesis. This lack is largely because the molecular mechanisms of cardiac fibrosis remain unclear despite extensive research. The Janus kinase/signal transducer and activator of transcription (JAK/STAT) signaling cascade is an extensively present intracellular signal transduction pathway and can regulate a wide range of biological processes, including cell proliferation, migration, differentiation, apoptosis, and immune response. Various upstream mediators such as cytokines, growth factors and hormones can initiate signal transmission via this pathway and play corresponding regulatory roles. STAT3 is a crucial player of the JAK/STAT pathway and its activation is related to inflammation, malignant tumors and autoimmune illnesses. Recently, the JAK/STAT3 signaling has been in the spotlight for its role in the occurrence and development of cardiac fibrosis and its activation can promote the proliferation and activation of CFs and the production of ECM proteins, thus leading to cardiac fibrosis. In this manuscript, we discuss the structure, transactivation and regulation of the JAK/STAT3 signaling pathway and review recent progress on the role of this pathway in cardiac fibrosis. Moreover, we summarize the current challenges and opportunities of targeting the JAK/STAT3 signaling for the treatment of fibrosis. In summary, the information presented in this article is critical for comprehending the role of the JAK/STAT3 pathway in cardiac fibrosis, and will also contribute to future research aimed at the development of effective anti-fibrotic therapeutic strategies targeting the JAK/STAT3 signaling.
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Affiliation(s)
- Heng Jiang
- Department of Cardiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Junjie Yang
- Department of Cardiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Tao Li
- Key Laboratory of Medical Electrophysiology, Ministry of Education and Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, China
| | - Xinyu Wang
- Key Laboratory of Medical Electrophysiology, Ministry of Education and Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, China
| | - Zhongcai Fan
- Department of Cardiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Qiang Ye
- Department of Cardiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Yanfei Du
- Department of Cardiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
- Key Laboratory of Medical Electrophysiology, Ministry of Education and Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, China
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4
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Korai A, Lin X, Tago K, Funakoshi-Tago M. The acetylation of STAT3 at K685 attenuates NPM-ALK-induced tumorigenesis. Cell Signal 2024; 114:110985. [PMID: 38000524 DOI: 10.1016/j.cellsig.2023.110985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 11/09/2023] [Accepted: 11/18/2023] [Indexed: 11/26/2023]
Abstract
Nucleophosmin-anaplastic lymphoma kinase (NPM-ALK), a fusion protein generated by a chromosomal translocation, is a causative gene product of anaplastic large cell lymphoma (ALCL). It induces cell proliferation and tumorigenesis by activating the transcription factor, signal transducer and activator of transcription factor 3 (STAT3). We herein demonstrated that STAT3 underwent acetylation at K685 in a manner that was dependent on the kinase activity of NPM-ALK. To investigate the role of STAT3 acetylation in NPM-ALK-induced oncogenesis, we generated Ba/F3 cells expressing NPM-ALK in which STAT3 was silenced by shRNA, named STAT3-KD cells, and then reconstituted wild-type STAT3 or the STAT3 K685R mutant into these cells. The phosphorylation level of the K685R mutant at Y705 and S727 was significantly higher than that of wild-type STAT3 in STAT3-KD cells. The expression of STAT3 target genes, such as IL-6, Pim1, Pim2, and Socs3, was more strongly induced by the reconstitution of the K685R mutant than wild-type STAT3. In addition, the proliferative ability of STAT3-KD cells reconstituted with the K685R mutant was slightly higher than that of STAT3-KD cells reconstituted with wild-type STAT3. In comparisons with the inoculation of STAT3-KD cells reconstituted with wild-type STAT3, the inoculation of STAT3-KD cells reconstituted with the K685R mutant significantly enhanced tumorigenesis and hepatosplenomegaly in nude mice. Collectively, these results revealed for the first time that the acetylation of STAT3 at K685 attenuated NPM-ALK-induced oncogenesis.
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Affiliation(s)
- Akira Korai
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Xin Lin
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Kenji Tago
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-Machi, Maebashi, Gunma 371-8514, Japan.
| | - Megumi Funakoshi-Tago
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan.
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5
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Jin J, Wu Y, Zhao Z, Wu Y, Zhou YD, Liu S, Sun Q, Yang G, Lin J, Nagle DG, Qin J, Zhang Z, Chen HZ, Zhang W, Sun S, Luan X. Small-molecule PROTAC mediates targeted protein degradation to treat STAT3-dependent epithelial cancer. JCI Insight 2022; 7:160606. [PMID: 36509291 DOI: 10.1172/jci.insight.160606] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 10/11/2022] [Indexed: 11/22/2022] Open
Abstract
The aberrant activation of STAT3 is associated with the etiology and progression in a variety of malignant epithelial-derived tumors, including head and neck squamous cell carcinoma (HNSCC) and colorectal cancer (CRC). Due to the lack of an enzymatic catalytic site or a ligand-binding pocket, there are no small-molecule inhibitors directly targeting STAT3 that have been approved for clinical translation. Emerging proteolysis targeting chimeric (PROTAC) technology-based approach represents a potential strategy to overcome the limitations of conventional inhibitors and inhibit activation of STAT3 and downstream genes. In this study, the heterobifunctional small-molecule-based PROTACs are successfully prepared from toosendanin (TSN), with 1 portion binding to STAT3 and the other portion binding to an E3 ubiquitin ligase. The optimized lead PROTAC (TSM-1) exhibits superior selectivity, potency, and robust antitumor effects in STAT3-dependent HNSCC and CRC - especially in clinically relevant patient-derived xenografts (PDX) and patient-derived organoids (PDO). The following mechanistic investigation identifies the reduced expression of critical downstream STAT3 effectors, through which TSM-1 promotes cell cycle arrest and apoptosis in tumor cells. These findings provide the first demonstration to our knowledge of a successful PROTAC-targeting strategy in STAT3-dependent epithelial cancer.
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Affiliation(s)
- Jinmei Jin
- Shanghai Frontiers Science Center for Chinese Medicine Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yaping Wu
- Department of Oral and Maxillofacial-Head Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, and.,National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Zeng Zhao
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai, China.,China Institute of Pharmaceutical Industry, Shanghai, China
| | - Ye Wu
- Shanghai Frontiers Science Center for Chinese Medicine Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yu-Dong Zhou
- Department of Chemistry and Biochemistry, College of Liberal Arts, and
| | - Sanhong Liu
- Shanghai Frontiers Science Center for Chinese Medicine Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qingyan Sun
- China Institute of Pharmaceutical Industry, Shanghai, China
| | - Guizhu Yang
- Department of Oral and Maxillofacial-Head Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, and.,National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Jiayi Lin
- Shanghai Frontiers Science Center for Chinese Medicine Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Dale G Nagle
- Department of Chemistry and Biochemistry, College of Liberal Arts, and.,Department of BioMolecular Sciences and Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University, Mississippi, USA
| | - Jiangjiang Qin
- Zhejiang Provincial Research Center for Upper Gastrointestinal Tract Cancer, The Cancer Hospital of the University of Chinese Academy of Sciences (CAS), Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China
| | - Zhiyuan Zhang
- Department of Oral and Maxillofacial-Head Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, and.,National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Hong-Zhuan Chen
- Shanghai Frontiers Science Center for Chinese Medicine Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Weidong Zhang
- Shanghai Frontiers Science Center for Chinese Medicine Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Shuyang Sun
- Department of Oral and Maxillofacial-Head Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, and.,National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Xin Luan
- Shanghai Frontiers Science Center for Chinese Medicine Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Wang J, Huang Z, Ji L, Chen C, Wan Q, Xin Y, Pu Z, Li K, Jiao J, Yin Y, Hu Y, Gong L, Zhang R, Yang X, Fang X, Wang M, Zhang B, Shao J, Zou J. SHF Acts as a Novel Tumor Suppressor in Glioblastoma Multiforme by Disrupting STAT3 Dimerization. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2200169. [PMID: 35843865 PMCID: PMC9475553 DOI: 10.1002/advs.202200169] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 05/28/2022] [Indexed: 05/28/2023]
Abstract
Sustained activation of signal transducer and activator of transcription 3 (STAT3) is a critical contributor in tumorigenesis and chemoresistance, thus making it an attractive cancer therapeutic target. Here, SH2 domain-containing adapter protein F (SHF) is identified as a tumor suppressor in glioblastoma Multiforme (GBM) and its negative regulation of STAT3 activity is characterized. Mechanically, SHF selectively binds and inhibits acetylated STAT3 dimerization without affecting STAT3 phosphorylation or acetylation. Additionally, by blocking STAT3-DNMT1 (DNA Methyltransferase 1) interaction, SHF relieves methylation of tumor suppressor genes. The SH2 domain is documented to be essential for SHF's actions on STAT3, and almost entirely replaces the functions of SHF on STAT3 independently. Moreover, the peptide C16 a peptide derived from the STAT3-binding sites of SHF inhibits STAT3 dimerization and STAT3/DNMT1 interaction, and achieves remarkable growth inhibition in GBM cells in vitro and in vivo. These findings strongly identify targeting of the SHF/STAT3 interaction as a promising strategy for developing an optimal STAT3 inhibitor and provide early evidence of the potential clinical efficacy of STAT3 inhibitors such as C16 in GBM.
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Affiliation(s)
- Jingjing Wang
- Department of Laboratory MedicineWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
- Center of Clinical ResearchWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
| | - Zixuan Huang
- Department of Laboratory MedicineWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
- Center of Clinical ResearchWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
| | - Li Ji
- Department of Laboratory MedicineWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
- Center of Clinical ResearchWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
| | - Cheng Chen
- Department of Laboratory MedicineWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
- Center of Clinical ResearchWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
| | - Quan Wan
- Department of NeurosurgeryThe Affiliated Wuxi Second Hospital of Nanjing Medical UniversityWuxiJiangsu214002P. R. China
| | - Yu Xin
- Key Laboratory of Industry BiotechnologySchool of BiotechnologyJiangnan UniversityWuxiJiangsu214122P. R. China
| | - Zhening Pu
- Department of Laboratory MedicineWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
- Center of Clinical ResearchWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
| | - Koukou Li
- Department of Laboratory MedicineWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
- Center of Clinical ResearchWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
| | - Jiantong Jiao
- Department of NeurosurgeryThe Affiliated Wuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
| | - Ying Yin
- Department of Laboratory MedicineWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
- Center of Clinical ResearchWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
| | - Yaling Hu
- Department of Laboratory MedicineWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
- Center of Clinical ResearchWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
| | - Lingli Gong
- Department of Laboratory MedicineWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
- Center of Clinical ResearchWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
| | - Rui Zhang
- Department of NeurosurgeryThe Affiliated Wuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
| | - Xusheng Yang
- Center of Clinical ResearchWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
| | - Xiangming Fang
- Department of RadiologyWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
| | - Mei Wang
- Department of Laboratory MedicineWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
- Center of Clinical ResearchWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
| | - Bo Zhang
- Department of Laboratory MedicineWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
- Center of Clinical ResearchWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
| | - Junfei Shao
- Department of NeurosurgeryThe Affiliated Wuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
| | - Jian Zou
- Department of Laboratory MedicineWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
- Center of Clinical ResearchWuxi People's Hospital of Nanjing Medical UniversityWuxiJiangsu214023China
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7
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Han H, Zhu W, Lin T, Liu C, Zhai H. N4BP3 promotes angiogenesis in Hepatocellular Carcinoma by binding with KAT2B. Cancer Sci 2022; 113:3390-3404. [PMID: 35848906 PMCID: PMC9530875 DOI: 10.1111/cas.15498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 07/08/2022] [Accepted: 07/13/2022] [Indexed: 11/28/2022] Open
Abstract
Although angiogenesis is a critical event in hepatocellular carcinoma (HCC), and this process provides the tumor with sufficient oxygen and nutrients, the precise molecular mechanism by which it occurs is not fully understood. NEDD4 binding protein 3 (N4BP3) was identified in this study as a novel pro‐angiogenic factor in HCC cell lines and tissues. We discovered that N4BP3 was significantly expressed in HCC and that its level of expression was positively correlated with the density of tumor microvessels in HCC tissues. Cell biology experiments have shown that N4BP3 knockdown in HCC cells significantly inhibits the formation of complete tubular structures by HUVECs in vitro and HCC angiogenesis in vivo. In HCC cells, overexpression of N4BP3 has the opposite effects. Further cell and molecular biology experiments have revealed that N4BP3 interacts with KAT2B (lysine acetyltransferase 2B), increasing signal transducer and activator of transcription 3 (STAT3) expression by regulating the distribution of acetyl‐histone H3 (Lys27) (H3K27ac) in its promoter region. This, in addition, regulates the activity of the STAT3 signaling pathway, which promotes the proliferation of microvessels in HCC and accelerates the malignant process of the tumor. In vivo experiments in nude mice have confirmed our findings, and also suggested that N4BP3 could be a potential target for the treatment of HCC in combination with sorafenib.
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Affiliation(s)
- Hexu Han
- Department of Gastroenterology, Taizhou People's Hospital, Taizhou, Jiangsu, People's Republic of China
| | - Wei Zhu
- Department of Pathology, Xishan People's Hospital Of Wuxi City, Wuxi, Jiangsu, People's Republic of China
| | - Ting Lin
- Department of Basic Medicine, Jiangsu College of Nursing, Huai'an, Jiangsu, People's Republic of China
| | - Cuixia Liu
- Department of Gastroenterology, Taizhou People's Hospital, Taizhou, Jiangsu, People's Republic of China
| | - Hengyong Zhai
- Department of Gastroenterology, Taizhou People's Hospital, Taizhou, Jiangsu, People's Republic of China
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8
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STAT3 Role in T-Cell Memory Formation. Int J Mol Sci 2022; 23:ijms23052878. [PMID: 35270020 PMCID: PMC8910982 DOI: 10.3390/ijms23052878] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 02/28/2022] [Accepted: 03/03/2022] [Indexed: 12/12/2022] Open
Abstract
Along with the clinical success of immuno-oncology drugs and cellular therapies, T-cell biology has attracted considerable attention in the immunology community. Long-term immunity, traditionally analyzed in the context of infection, is increasingly studied in cancer. Many signaling pathways, transcription factors, and metabolic regulators have been shown to participate in the formation of memory T cells. There is increasing evidence that the signal transducer and activator of transcription-3 (STAT3) signaling pathway is crucial for the formation of long-term T-cell immunity capable of efficient recall responses. In this review, we summarize what is currently known about STAT3 role in the context of memory T-cell formation and antitumor immunity.
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9
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Potential of Polyphenols to Restore SIRT1 and NAD+ Metabolism in Renal Disease. Nutrients 2022; 14:nu14030653. [PMID: 35277012 PMCID: PMC8837945 DOI: 10.3390/nu14030653] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/18/2022] [Accepted: 01/29/2022] [Indexed: 11/17/2022] Open
Abstract
SIRT1 is an NAD+-dependent class III histone deacetylase that is abundantly expressed in the kidney, where it modulates gene expression, apoptosis, energy homeostasis, autophagy, acute stress responses, and mitochondrial biogenesis. Alterations in SIRT1 activity and NAD+ metabolism are frequently observed in acute and chronic kidney diseases of diverse origins, including obesity and diabetes. Nevertheless, in vitro and in vivo studies and clinical trials with humans show that the SIRT1-activating compounds derived from natural sources, such as polyphenols found in fruits, vegetables, and plants, including resveratrol, quercetin, and isoflavones, can prevent disease and be part of treatments for a wide variety of diseases. Here, we summarize the roles of SIRT1 and NAD+ metabolism in renal pathophysiology and provide an overview of polyphenols that have the potential to restore SIRT1 and NAD+ metabolism in renal diseases.
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10
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Awasthi N, Liongue C, Ward AC. STAT proteins: a kaleidoscope of canonical and non-canonical functions in immunity and cancer. J Hematol Oncol 2021; 14:198. [PMID: 34809691 PMCID: PMC8607625 DOI: 10.1186/s13045-021-01214-y] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 11/09/2021] [Indexed: 12/24/2022] Open
Abstract
STAT proteins represent an important family of evolutionarily conserved transcription factors that play key roles in diverse biological processes, notably including blood and immune cell development and function. Classically, STAT proteins have been viewed as inducible activators of transcription that mediate cellular responses to extracellular signals, particularly cytokines. In this 'canonical' paradigm, latent STAT proteins become tyrosine phosphorylated following receptor activation, typically via downstream JAK proteins, facilitating their dimerization and translocation into the nucleus where they bind to specific sequences in the regulatory region of target genes to activate transcription. However, growing evidence has challenged this paradigm and identified alternate 'non-canonical' functions, such as transcriptional repression and roles outside the nucleus, with both phosphorylated and unphosphorylated STATs involved. This review provides a revised framework for understanding the diverse kaleidoscope of STAT protein functional modalities. It further discusses the implications of this framework for our understanding of STAT proteins in normal blood and immune cell biology and diseases such as cancer, and also provides an evolutionary context to place the origins of these alternative functional modalities.
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Affiliation(s)
- Nagendra Awasthi
- School of Medicine, Deakin University, Pigdons Road, Geelong, VIC, 3216, Australia.,Institue of Mental and Physical Health and Clinical Translation (IMPACT), Deakin University, Geelong, VIC, Australia
| | - Clifford Liongue
- School of Medicine, Deakin University, Pigdons Road, Geelong, VIC, 3216, Australia.,Institue of Mental and Physical Health and Clinical Translation (IMPACT), Deakin University, Geelong, VIC, Australia
| | - Alister C Ward
- School of Medicine, Deakin University, Pigdons Road, Geelong, VIC, 3216, Australia. .,Institue of Mental and Physical Health and Clinical Translation (IMPACT), Deakin University, Geelong, VIC, Australia.
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11
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Wang L, Astone M, Alam SK, Zhu Z, Pei W, Frank DA, Burgess SM, Hoeppner LH. Suppressing STAT3 activity protects the endothelial barrier from VEGF-mediated vascular permeability. Dis Model Mech 2021; 14:272222. [PMID: 34542605 PMCID: PMC8592016 DOI: 10.1242/dmm.049029] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 09/10/2021] [Indexed: 12/27/2022] Open
Abstract
Vascular permeability triggered by inflammation or ischemia promotes edema, exacerbates disease progression and impairs tissue recovery. Vascular endothelial growth factor (VEGF) is a potent inducer of vascular permeability. VEGF plays an integral role in regulating vascular barrier function physiologically and in pathologies, including cancer, stroke, cardiovascular disease, retinal conditions and COVID-19-associated pulmonary edema, sepsis and acute lung injury. Understanding temporal molecular regulation of VEGF-induced vascular permeability will facilitate developing therapeutics to inhibit vascular permeability, while preserving tissue-restorative angiogenesis. Here, we demonstrate that VEGF signals through signal transducer and activator of transcription 3 (STAT3) to promote vascular permeability. We show that genetic STAT3 ablation reduces vascular permeability in STAT3-deficient endothelium of mice and VEGF-inducible zebrafish crossed with CRISPR/Cas9-generated Stat3 knockout zebrafish. Intercellular adhesion molecule 1 (ICAM-1) expression is transcriptionally regulated by STAT3, and VEGF-dependent STAT3 activation is regulated by JAK2. Pyrimethamine, an FDA-approved antimicrobial agent that inhibits STAT3-dependent transcription, substantially reduces VEGF-induced vascular permeability in zebrafish, mouse and human endothelium. Collectively, our findings suggest that VEGF/VEGFR-2/JAK2/STAT3 signaling regulates vascular barrier integrity, and inhibition of STAT3-dependent activity reduces VEGF-induced vascular permeability. This article has an associated First Person interview with the first author of the paper. Summary: Genetic STAT3 ablation in mice and VEGF-inducible zebrafish reveals that VEGF signals through STAT3 to promote vascular permeability. Pyrimethamine reduces VEGF-induced permeability in animal models.
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Affiliation(s)
- Li Wang
- The Hormel Institute, University of Minnesota, Austin, MN 55912, USA
| | - Matteo Astone
- The Hormel Institute, University of Minnesota, Austin, MN 55912, USA
| | - Sk Kayum Alam
- The Hormel Institute, University of Minnesota, Austin, MN 55912, USA
| | - Zhu Zhu
- The Hormel Institute, University of Minnesota, Austin, MN 55912, USA
| | - Wuhong Pei
- Translational and Functional Genomics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20814, USA
| | - David A Frank
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Shawn M Burgess
- Translational and Functional Genomics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20814, USA
| | - Luke H Hoeppner
- The Hormel Institute, University of Minnesota, Austin, MN 55912, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
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12
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Tao B, Shi J, Shuai S, Zhou H, Zhang H, Li B, Wang X, Li G, He H, Zhong J. CYB561D2 up-regulation activates STAT3 to induce immunosuppression and aggression in gliomas. J Transl Med 2021; 19:338. [PMID: 34372858 PMCID: PMC8351164 DOI: 10.1186/s12967-021-02987-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 07/10/2021] [Indexed: 12/13/2022] Open
Abstract
Background Fine tuned balance of reactive oxygen species (ROS) is essential for tumor cells and tumor cells use immune checkpoints to evade attack form immunity system. However, it’s unclear whether there is any crosstalk between these two pathways. CYB561D2, an antioxidant protein, is part of 5-gene prognosis signature in gliomas and its involvement in gliomas is unknown. Here, we aim to provide a detailed characterization of CYB561D2 in gliomas. Methods CYB561D2 expression was measured in clinical samples of gilomas and normal tissues. The effects of CYB561D2 on immunity related genes and tumor behaviors were investigated in glioma cell lines with various in vitro and in vivo assays. Results CYB561D2 expression was enhanced in gliomas compared to control tissues. CYB561D2 up-regulation was associated with high grading of gliomas and short survival in patients. CYB561D2 expression was induced by H2O2 in glioma cell lines. CYB561D2 and its functional product ascorbate activated STAT3 dose-dependently. CYB561D2 over-expression increased PD-L1, CCL2 and TDO2 expression, and induced immunosuppression in co-cultured T cells. In in vitro assays, CYB561D2 knock-down suppressed cell growth, colony formation, migration and promoted apoptosis. In contrast, CYB561D2 over-expression reduced survival rate in intracranial glioma model and this effect could be blocked by dominant negative-STAT3. The CYB561D2 up-regulation and the positive association of CYB561D2 with PD-L1, CCL2 and TDO2 expression were cross-validated in open-access datasets. Conclusions CYB561D2 up-regulation induces immunosuppression and aggression via activating STAT3 in gliomas and CYB561D2 mediates ROS-tumor immunity crosstalk. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-021-02987-z.
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Affiliation(s)
- Bangbao Tao
- Department of Neurosurgery, Xinhua Hospital, Shanghai Jiaotong University, School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Juanhong Shi
- Department of Pathology, Tongji Hospital, Shanghai Tongji University, No 389 Xincun Road, Shanghai, China
| | - Shuai Shuai
- Depatment of Oncology, Center Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, Guangdong, China
| | - Haiyan Zhou
- Department of Pathology, Xiang-ya School of Medicine, Central South University, Changsha, 410013, China
| | - Hongxia Zhang
- Department of Emergency, San Ai Tang Hospital, 74 Jing-Ning Road, Lanzhou, 730030, China
| | - Bin Li
- Department of Neurosurgery, Xinhua Hospital, Shanghai Jiaotong University, School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Xiaoqiang Wang
- Department of Neurosurgery, Xinhua Hospital, Shanghai Jiaotong University, School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Guohui Li
- Department of Anesthesiology, Xinhua Hospital, Shanghai Jiaotong University, School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China.
| | - Hua He
- Department of Neurosurgery, Third Affiliated Hospital of Second Military Medical University, No 225 Changhai Road, Shanghai, 200438, China.
| | - Jun Zhong
- Department of Neurosurgery, Xinhua Hospital, Shanghai Jiaotong University, School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China.
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13
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Tesoriere A, Dinarello A, Argenton F. The Roles of Post-Translational Modifications in STAT3 Biological Activities and Functions. Biomedicines 2021; 9:956. [PMID: 34440160 PMCID: PMC8393524 DOI: 10.3390/biomedicines9080956] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 07/27/2021] [Accepted: 07/30/2021] [Indexed: 02/07/2023] Open
Abstract
STAT3 is an important transcription factor that regulates cell growth and proliferation by regulating gene transcription of a plethora of genes. This protein also has many roles in cancer progression and several tumors such as prostate, lung, breast, and intestine cancers that are characterized by strong STAT3-dependent transcriptional activity. This protein is post-translationally modified in different ways according to cellular context and stimulus, and the same post-translational modification can have opposite effects in different cellular models. In this review, we describe the studies performed on the main modifications affecting the activity of STAT3: phosphorylation of tyrosine 705 and serine 727; acetylation of lysine 49, 87, 601, 615, 631, 685, 707, and 709; and methylation of lysine 49, 140, and 180. The extensive results obtained by different studies demonstrate that post-translational modifications drastically change STAT3 activities and that we need further analysis to properly elucidate all the functions of this multifaceted transcription factor.
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Affiliation(s)
| | | | - Francesco Argenton
- Dipartimento di Biologia, Università degli Studi di Padova, 35131 Padova, Italy; (A.T.); (A.D.)
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14
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Nihal M, Wu J, Stonesifer CJ, Daniels J, Choi J, Geskin L, Rook AH, Wood GS. Epigenetic Regulation of Apoptosis in Cutaneous T-Cell Lymphoma: Implications for Therapy with Methotrexate, Jak Inhibitors, and Resveratrol. J Invest Dermatol 2021; 142:493-496.e7. [PMID: 34358529 DOI: 10.1016/j.jid.2021.06.034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 06/22/2021] [Accepted: 06/27/2021] [Indexed: 01/12/2023]
Affiliation(s)
- Minakshi Nihal
- Department of Dermatology, The School of Medicine and Public Health, University of Wisconsin and William S. Middleton VAMC, Madison, Wisconsin, USA.
| | - Jianqiang Wu
- Department of Dermatology, The School of Medicine and Public Health, University of Wisconsin and William S. Middleton VAMC, Madison, Wisconsin, USA
| | - Connor J Stonesifer
- Department of Dermatology, Irving Medical Center, Columbia University, New York, New York, USA
| | - Jay Daniels
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Jaehyuk Choi
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Larisa Geskin
- Department of Dermatology, Irving Medical Center, Columbia University, New York, New York, USA
| | - Alain H Rook
- Department of Dermatology, Penn Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Gary S Wood
- Department of Dermatology, The School of Medicine and Public Health, University of Wisconsin and William S. Middleton VAMC, Madison, Wisconsin, USA
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15
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Diallo M, Herrera F. The role of understudied post-translational modifications for the behavior and function of Signal Transducer and Activator of Transcription 3. FEBS J 2021; 289:6235-6255. [PMID: 34235865 DOI: 10.1111/febs.16116] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 06/16/2021] [Accepted: 07/07/2021] [Indexed: 12/19/2022]
Abstract
The Signal Transducer and Activator of Transcription (STAT) family of transcription factors is involved in inflammation, immunity, development, cancer, and response to injury, among other biological phenomena. Canonical STAT signaling is often represented as a 3-step pathway involving the sequential activation of a membrane receptor, an intermediate kinase, and a STAT transcription factor. The rate-limiting phosphorylation at a highly conserved C-terminal tyrosine residue determines the nuclear translocation and transcriptional activity of STATs. This apparent simplicity is actually misleading and can hardly explain the pleiotropic nature of STATs, the existence of various noncanonical STAT pathways, or the key role of the N-terminal domain in STAT functions. More than 80 post-translational modifications (PTMs) have been identified for STAT3, but their functions remain barely understood. Here, we provide a brief but comprehensive overview of these underexplored PTMs and their role on STAT3 canonical and noncanonical functions. A less tyrosine-centric point of view may be required to advance our understanding of STAT signaling.
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Affiliation(s)
- Mickael Diallo
- Faculdade de Ciências da Universidade de Lisboa, Cell Structure and Dynamics Laboratory, BioISI - Instituto de Biosistemas e Ciências integrativas, Lisbon, Portugal.,MOSTMICRO Research Unit, Instituto de Tecnologia Química e Biológica (ITQB-NOVA), Universidade Nova de Lisboa, Oeiras, Portugal
| | - Federico Herrera
- Faculdade de Ciências da Universidade de Lisboa, Cell Structure and Dynamics Laboratory, BioISI - Instituto de Biosistemas e Ciências integrativas, Lisbon, Portugal.,MOSTMICRO Research Unit, Instituto de Tecnologia Química e Biológica (ITQB-NOVA), Universidade Nova de Lisboa, Oeiras, Portugal
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16
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TrkA Interacts with and Phosphorylates STAT3 to Enhance Gene Transcription and Promote Breast Cancer Stem Cells in Triple-Negative and HER2-Enriched Breast Cancers. Cancers (Basel) 2021; 13:cancers13102340. [PMID: 34066153 PMCID: PMC8150921 DOI: 10.3390/cancers13102340] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/05/2021] [Accepted: 05/07/2021] [Indexed: 01/15/2023] Open
Abstract
Simple Summary Breast cancer is the leading cancer in American women. Due to the inherent aggressiveness of triple-negative and HER2-enriched breast cancers, it is imperative to identify novel molecular targets for therapeutic intervention. Due to their abnormal activities in metastatic breast cancers, JAK2–STAT3 and TrkA pathways have been individually implicated in aggressive breast tumors. However, their co-activation and signaling interactions have not been thoroughly investigated. Therefore, our study aimed to elucidate the extent of crosstalk between JAK2–STAT3 and TrkA signaling pathways and its impact on breast cancer. Our data revealed a novel interaction between TrkA and STAT3, and that this interaction results in STAT3 phosphorylation and activation by TrkA, leading to enhanced stemness gene expression and stem cell renewal. We further found that the co-activation of JAK2–STAT3 and TrkA pathways is correlated with shorter time to develop overall and organ-specific metastasis, suggesting that this signaling crosstalk underlies the aggressiveness of triple-negative and HER2-enriched breast cancers. Abstract JAK2–STAT3 and TrkA signaling pathways have been separately implicated in aggressive breast cancers; however, whether they are co-activated or undergo functional interaction has not been thoroughly investigated. Herein we report, for the first time that STAT3 and TrkA are significantly co-overexpressed and co-activated in triple-negative breast cancer (TNBC) and HER2-enriched breast cancer, as shown by immunohistochemical staining and data mining. Through immunofluorescence staining–confocal microscopy and immunoprecipitation–Western blotting, we found that TrkA and STAT3 co-localize and physically interact in the cytoplasm, and the interaction is dependent on STAT3-Y705 phosphorylation. TrkA–STAT3 interaction leads to STAT3 phosphorylation at Y705 by TrkA in breast cancer cells and cell-free kinase assays, indicating that STAT3 is a novel substrate of TrkA. β-NGF-mediated TrkA activation induces TrkA–STAT3 interaction, STAT3 nuclear transport and transcriptional activity, and the expression of STAT3 target genes, SOX2 and MYC. The co-activation of both pathways promotes breast cancer stem cells. Finally, we found that TNBC and HER2-enriched breast cancer with JAK2–STAT3 and TrkA co-activation are positively associated with poor overall metastasis-free and organ-specific metastasis-free survival. Collectively, our study uncovered that TrkA is a novel activating kinase of STAT3, and their co-activation enhances gene transcription and promotes breast cancer stem cells in TNBC and HER2-enriched breast cancer.
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17
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Mirzaei S, Gholami MH, Mahabady MK, Nabavi N, Zabolian A, Banihashemi SM, Haddadi A, Entezari M, Hushmandi K, Makvandi P, Samarghandian S, Zarrabi A, Ashrafizadeh M, Khan H. Pre-clinical investigation of STAT3 pathway in bladder cancer: Paving the way for clinical translation. Biomed Pharmacother 2020; 133:111077. [PMID: 33378975 DOI: 10.1016/j.biopha.2020.111077] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/24/2020] [Accepted: 11/27/2020] [Indexed: 02/07/2023] Open
Abstract
Effective cancer therapy requires identification of signaling networks and investigating their potential role in proliferation and invasion of cancer cells. Among molecular pathways, signal transducer and activator of transcription 3 (STAT3) has been of importance due to its involvement in promoting proliferation, and invasion of cancer cells, and mediating chemoresistance. In the present review, our aim is to reveal role of STAT3 pathway in bladder cancer (BC), as one of the leading causes of death worldwide. In respect to its tumor-promoting role, STAT3 is able to enhance the growth of BC cells via inhibiting apoptosis and cell cycle arrest. STAT3 also contributes to metastasis of BC cells via upregulating of MMP-2 and MMP-9 as well as genes in the EMT pathway. BC cells obtain chemoresistance via STAT3 overexpression and its inhibition paves the way for increasing efficacy of chemotherapy. Different molecular pathways such as KMT1A, EZH2, DAB2IP and non-coding RNAs including microRNAs and long non-coding RNAs can function as upstream mediators of STAT3 that are discussed in this review article.
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Affiliation(s)
- Sepideh Mirzaei
- Department of Biology, Faculty of Science, Islamic Azad University, Science and Research Branch, Tehran, Iran
| | | | - Mahmood Khaksary Mahabady
- Anatomical Sciences Research Center, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Noushin Nabavi
- Research Services, University of Victoria, Victoria, BC, V8W 2Y2, Canada
| | - Amirhossein Zabolian
- Young Researchers and Elite Club, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | | | - Amirabbas Haddadi
- Young Researchers and Elite Club, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Maliheh Entezari
- Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Kiavash Hushmandi
- Department of Food Hygiene and Quality Control, Division of Epidemiology & Zoonoses, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Pooyan Makvandi
- IstitutoItaliano di Tecnologia, Centre for Micro-BioRobotics, viale Rinaldo Piaggio 34, 56025, Pontedera, Pisa, Italy
| | - Saeed Samarghandian
- Department of Basic Medical Sciences, Neyshabur University of Medical Sciences, Neyshabur, Iran
| | - Ali Zarrabi
- Sabanci University Nanotechnology Research and Application Center (SUNUM), Tuzla, 34956, Istanbul, Turkey.
| | - Milad Ashrafizadeh
- Sabanci University Nanotechnology Research and Application Center (SUNUM), Tuzla, 34956, Istanbul, Turkey; Faculty of Engineering and Natural Sciences, Sabanci University, OrtaMahalle, ÜniversiteCaddesi No. 27, Orhanlı, Tuzla, 34956, Istanbul, Turkey.
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University, Mardan, 23200, Pakistan.
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18
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Wang L, Astone M, Alam SK, Zhu Z, Pei W, Frank DA, Burgess SM, Hoeppner LH. Suppressing STAT3 activity protects the endothelial barrier from VEGF-mediated vascular permeability. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2020. [PMID: 33140053 PMCID: PMC7605565 DOI: 10.1101/2020.10.27.358374] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Vascular permeability triggered by inflammation or ischemia promotes edema, exacerbates disease progression, and impairs tissue recovery. Vascular endothelial growth factor (VEGF) is a potent inducer of vascular permeability. VEGF plays an integral role in regulating vascular barrier function physiologically and in pathologies, such as cancer, ischemic stroke, cardiovascular disease, retinal conditions, and COVID-19-associated pulmonary edema and sepsis, which often leads to acute lung injury, including acute respiratory distress syndrome. However, after initially stimulating permeability, VEGF subsequently mediates angiogenesis to repair damaged tissue. Consequently, understanding temporal molecular regulation of VEG-Finduced vascular permeability will facilitate developing therapeutics that achieve the delicate balance of inhibiting vascular permeability while preserving tissue repair. Here, we demonstrate that VEGF signals through signal transducer and activator of transcription 3 (STAT3) to promote vascular permeability. Specifically, we show that genetic STAT3 ablation reduces vascular permeability in STAT3-deficient endothelium of mice and VEGF-inducible zebrafish crossed with CRISPR/Cas9 generated genomic STAT3 knockout zebrafish. Importantly, STAT3 deficiency does not impair vascular development and function in vivo. We identify intercellular adhesion molecule 1 (ICAM-1) as a STAT3-dependent transcriptional regulator and show VEGF-dependent STAT3 activation is regulated by JAK2. Pyrimethamine, an FDA-approved antimicrobial agent that inhibits STAT3-dependent transcription, substantially reduces VEGF-induced vascular permeability in zebrafish, mouse, and human endothelium. Indeed, pharmacologically targeting STAT3 increases vascular barrier integrity using two additional compounds, atovaquone and C188-9. Collectively, our findings suggest that the VEGF, VEGFR-2, JAK2, and STAT3 signaling cascade regulates vascular barrier integrity, and inhibition of STAT3-dependent activity reduces VEGF-induced vascular permeability in vertebrate models.
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Affiliation(s)
- Li Wang
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - Matteo Astone
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - Sk Kayum Alam
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - Zhu Zhu
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - Wuhong Pei
- Translational and Functional Genomics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - David A Frank
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Shawn M Burgess
- Translational and Functional Genomics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - Luke H Hoeppner
- The Hormel Institute, University of Minnesota, Austin, MN, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
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19
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Bharadwaj U, Kasembeli MM, Robinson P, Tweardy DJ. Targeting Janus Kinases and Signal Transducer and Activator of Transcription 3 to Treat Inflammation, Fibrosis, and Cancer: Rationale, Progress, and Caution. Pharmacol Rev 2020; 72:486-526. [PMID: 32198236 PMCID: PMC7300325 DOI: 10.1124/pr.119.018440] [Citation(s) in RCA: 165] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Before it was molecularly cloned in 1994, acute-phase response factor or signal transducer and activator of transcription (STAT)3 was the focus of intense research into understanding the mammalian response to injury, particularly the acute-phase response. Although known to be essential for liver production of acute-phase reactant proteins, many of which augment innate immune responses, molecular cloning of acute-phase response factor or STAT3 and the research this enabled helped establish the central function of Janus kinase (JAK) family members in cytokine signaling and identified a multitude of cytokines and peptide hormones, beyond interleukin-6 and its family members, that activate JAKs and STAT3, as well as numerous new programs that their activation drives. Many, like the acute-phase response, are adaptive, whereas several are maladaptive and lead to chronic inflammation and adverse consequences, such as cachexia, fibrosis, organ dysfunction, and cancer. Molecular cloning of STAT3 also enabled the identification of other noncanonical roles for STAT3 in normal physiology, including its contribution to the function of the electron transport chain and oxidative phosphorylation, its basal and stress-related adaptive functions in mitochondria, its function as a scaffold in inflammation-enhanced platelet activation, and its contributions to endothelial permeability and calcium efflux from endoplasmic reticulum. In this review, we will summarize the molecular and cellular biology of JAK/STAT3 signaling and its functions under basal and stress conditions, which are adaptive, and then review maladaptive JAK/STAT3 signaling in animals and humans that lead to disease, as well as recent attempts to modulate them to treat these diseases. In addition, we will discuss how consideration of the noncanonical and stress-related functions of STAT3 cannot be ignored in efforts to target the canonical functions of STAT3, if the goal is to develop drugs that are not only effective but safe. SIGNIFICANCE STATEMENT: Key biological functions of Janus kinase (JAK)/signal transducer and activator of transcription (STAT)3 signaling can be delineated into two broad categories: those essential for normal cell and organ development and those activated in response to stress that are adaptive. Persistent or dysregulated JAK/STAT3 signaling, however, is maladaptive and contributes to many diseases, including diseases characterized by chronic inflammation and fibrosis, and cancer. A comprehensive understanding of JAK/STAT3 signaling in normal development, and in adaptive and maladaptive responses to stress, is essential for the continued development of safe and effective therapies that target this signaling pathway.
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Affiliation(s)
- Uddalak Bharadwaj
- Department of Infectious Diseases, Infection Control & Employee Health, Division of Internal Medicine (U.B., M.M.K., P.R., D.J.T.), and Department of Molecular and Cellular Oncology (D.J.T.), University of Texas, MD Anderson Cancer Center, Houston, Texas
| | - Moses M Kasembeli
- Department of Infectious Diseases, Infection Control & Employee Health, Division of Internal Medicine (U.B., M.M.K., P.R., D.J.T.), and Department of Molecular and Cellular Oncology (D.J.T.), University of Texas, MD Anderson Cancer Center, Houston, Texas
| | - Prema Robinson
- Department of Infectious Diseases, Infection Control & Employee Health, Division of Internal Medicine (U.B., M.M.K., P.R., D.J.T.), and Department of Molecular and Cellular Oncology (D.J.T.), University of Texas, MD Anderson Cancer Center, Houston, Texas
| | - David J Tweardy
- Department of Infectious Diseases, Infection Control & Employee Health, Division of Internal Medicine (U.B., M.M.K., P.R., D.J.T.), and Department of Molecular and Cellular Oncology (D.J.T.), University of Texas, MD Anderson Cancer Center, Houston, Texas
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20
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Wang X, Liu R, Zhang W, Hyink DP, Das GC, Das B, Li Z, Wang A, Yuan W, Klotman PE, Lee K, He JC. Role of SIRT1 in HIV-associated kidney disease. Am J Physiol Renal Physiol 2020; 319:F335-F344. [PMID: 32657157 PMCID: PMC7473906 DOI: 10.1152/ajprenal.00140.2020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 06/21/2020] [Accepted: 06/28/2020] [Indexed: 12/16/2022] Open
Abstract
Human immunodeficiency virus (HIV) infection of kidney cells can lead to HIV-associated nephropathy (HIVAN) and aggravate the progression of other chronic kidney diseases. Thus, a better understanding of the mechanisms of HIV-induced kidney cell injury is needed for effective therapy against HIV-induced kidney disease progression. We have previously shown that the acetylation and activation of key inflammatory regulators, NF-κB p65 and STAT3, were increased in HIVAN kidneys. Here, we demonstrate the key role of sirtuin 1 (SIRT1) deacetylase in the regulation of NF-κB and STAT3 activity in HIVAN. We found that SIRT1 expression was reduced in the glomeruli of human and mouse HIVAN kidneys and that HIV-1 gene expression was associated with reduced SIRT1 expression and increased acetylation of NF-κB p65 and STAT3 in cultured podocytes. Interestingly, SIRT1 overexpression, in turn, reduced the expression of negative regulatory factor in podocytes stably expressing HIV-1 proviral genes, which was associated with inactivation of NF-κB p65 and a reduction in HIV-1 long terminal repeat promoter activity. In vivo, the administration of the small-molecule SIRT1 agonist BF175 or inducible overexpression of SIRT1 specifically in podocytes markedly attenuated albuminuria, kidney lesions, and expression of inflammatory markers in Tg26 mice. Finally, we showed that the reduction in SIRT1 expression by HIV-1 is in part mediated through miR-34a expression. Together, our data provide a new mechanism of SIRT1 regulation and its downstream effects in HIV-1-infected kidney cells and indicate that SIRT1/miR-34a are potential drug targets to treat HIV-related kidney disease.
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Affiliation(s)
- Xuan Wang
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
- Division of Nephrology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Ruijie Liu
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Weijia Zhang
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Deborah P Hyink
- Division of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas
| | - Gokul C Das
- Division of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas
| | - Bhaskar Das
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Zhengzhe Li
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Andrew Wang
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Weijie Yuan
- Division of Nephrology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Paul E Klotman
- Division of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas
| | - Kyung Lee
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - John Cijiang He
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
- Renal Section, James J Peters Veterans Affairs Medical Center, Bronx, New York
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21
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Letra‐Vilela R, Cardoso B, Silva‐Almeida C, Maia Rocha A, Murtinheira F, Branco‐Santos J, Rodriguez C, Martin V, Santa‐Marta M, Herrera F. Can asymmetric post-translational modifications regulate the behavior of STAT3 homodimers? FASEB Bioadv 2020; 2:116-125. [PMID: 32123861 PMCID: PMC7003655 DOI: 10.1096/fba.2019-00049] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 06/14/2019] [Accepted: 12/10/2019] [Indexed: 01/16/2023] Open
Abstract
Signal transducer and activator of transcription 3 (STAT3) is a ubiquitous and pleiotropic transcription factor that plays essential roles in normal development, immunity, response to tissue damage and cancer. We have developed a Venus-STAT3 bimolecular fluorescence complementation assay that allows the visualization and study of STAT3 dimerization and protein-protein interactions in living cells. Inactivating mutations on residues susceptible to post-translational modifications (PTMs) (K49R, K140R, K685R, Y705F and S727A) changed significantly the intracellular distribution of unstimulated STAT3 dimers when the dimers were formed by STAT3 molecules that carried different mutations (ie they were "asymmetric"). Some of these asymmetric dimers changed the proliferation rate of HeLa cells. Our results indicate that asymmetric PTMs on STAT3 dimers could constitute a new level of regulation of STAT3 signaling. We put forward these observations as a working hypothesis, since confirming the existence of asymmetric STAT3 homodimers in nature is extremely difficult, and our own experimental setup has technical limitations that we discuss. However, if our hypothesis is confirmed, its conceptual implications go far beyond STAT3, and could advance our understanding and control of signaling pathways.
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Affiliation(s)
- Ricardo Letra‐Vilela
- Cell Structure and Dynamics LaboratoryInstituto de Tecnologia Quimica e Biologica (ITQB‐NOVA)Universidade Nova de LisboaOeirasPortugal
- Cell Structure and Dynamics LaboratoryFaculdade de CiênciasUniversidade de LisboaLisbonPortugal
| | - Beatriz Cardoso
- Cell Structure and Dynamics LaboratoryInstituto de Tecnologia Quimica e Biologica (ITQB‐NOVA)Universidade Nova de LisboaOeirasPortugal
| | - Catarina Silva‐Almeida
- Cell Structure and Dynamics LaboratoryInstituto de Tecnologia Quimica e Biologica (ITQB‐NOVA)Universidade Nova de LisboaOeirasPortugal
| | - Ana Maia Rocha
- Cell Structure and Dynamics LaboratoryInstituto de Tecnologia Quimica e Biologica (ITQB‐NOVA)Universidade Nova de LisboaOeirasPortugal
| | - Fernanda Murtinheira
- Cell Structure and Dynamics LaboratoryInstituto de Tecnologia Quimica e Biologica (ITQB‐NOVA)Universidade Nova de LisboaOeirasPortugal
- Cell Structure and Dynamics LaboratoryFaculdade de CiênciasUniversidade de LisboaLisbonPortugal
| | - Joana Branco‐Santos
- Cell Structure and Dynamics LaboratoryInstituto de Tecnologia Quimica e Biologica (ITQB‐NOVA)Universidade Nova de LisboaOeirasPortugal
| | - Carmen Rodriguez
- Instituto Universitario de Oncología del Principado de Asturias (IUOPA) and Departamento de Morfología y Biología CelularFacultad de MedicinaUniversity of OviedoOviedoSpain
| | - Vanesa Martin
- Instituto Universitario de Oncología del Principado de Asturias (IUOPA) and Departamento de Morfología y Biología CelularFacultad de MedicinaUniversity of OviedoOviedoSpain
| | - Mariana Santa‐Marta
- Cell Structure and Dynamics LaboratoryInstituto de Tecnologia Quimica e Biologica (ITQB‐NOVA)Universidade Nova de LisboaOeirasPortugal
| | - Federico Herrera
- Cell Structure and Dynamics LaboratoryInstituto de Tecnologia Quimica e Biologica (ITQB‐NOVA)Universidade Nova de LisboaOeirasPortugal
- Cell Structure and Dynamics LaboratoryFaculdade de CiênciasUniversidade de LisboaLisbonPortugal
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22
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Loreti M, Shi DL, Carron C. The regulatory proteins DSCR6 and Ezh2 oppositely regulate Stat3 transcriptional activity in mesoderm patterning during Xenopus development. J Biol Chem 2020; 295:2724-2735. [PMID: 31996376 DOI: 10.1074/jbc.ra119.010719] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 01/15/2020] [Indexed: 12/26/2022] Open
Abstract
Embryonic cell fate specification and axis patterning requires integration of several signaling pathways that orchestrate region-specific gene expression. The transcription factor signal transducer and activator of transcription 3 (Stat3) plays important roles during early development, but it is unclear how Stat3 is activated. Here, using Xenopus as a model, we analyzed the post-translational regulation and functional consequences of Stat3 activation in dorsoventral axis patterning. We show that Stat3 phosphorylation, lysine methylation, and transcriptional activity increase before gastrulation and induce ventral mesoderm formation. Down syndrome critical region gene 6 (DSCR6), a RIPPLY family member that induces dorsal mesoderm by releasing repressive polycomb group proteins from chromatin, bound to the Stat3 C-terminal region and antagonized its transcriptional and ventralizing activities by interfering with its lysine methylation. Enhancer of zeste 2 polycomb-repressive complex 2 subunit (Ezh2) also bound to this region; however, its methyltransferase activity was required for Stat3 methylation and activation. Loss of Ezh2 resulted in dorsalization of ventral mesoderm and formation of a secondary axis. Furthermore, interference with Ezh2 phosphorylation also prevented Stat3 lysine methylation and transcriptional activity. Thus, inhibition of either Ezh2 phosphorylation or Stat3 lysine methylation compensated for the absence of DSCR6 function. These results reveal that DSCR6 and Ezh2 critically and post-translationally regulate Stat3 transcriptional activity. Ezh2 promotes Stat3 activation in ventral mesoderm formation independently of epigenetic regulation, whereas DSCR6 specifies dorsal fate by counteracting this ventralizing activity. This antagonism helps pattern the mesoderm along the dorsoventral axis, representing a critical facet of cell identity regulation during development.
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Affiliation(s)
- Mafalda Loreti
- Sorbonne Université, CNRS UMR7622, IBPS-Developmental Biology Laboratory, 75005 Paris, France
| | - De-Li Shi
- Sorbonne Université, CNRS UMR7622, IBPS-Developmental Biology Laboratory, 75005 Paris, France.
| | - Clémence Carron
- Sorbonne Université, CNRS UMR7622, IBPS-Developmental Biology Laboratory, 75005 Paris, France.
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23
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Brachet-Botineau M, Polomski M, Neubauer HA, Juen L, Hédou D, Viaud-Massuard MC, Prié G, Gouilleux F. Pharmacological Inhibition of Oncogenic STAT3 and STAT5 Signaling in Hematopoietic Cancers. Cancers (Basel) 2020; 12:E240. [PMID: 31963765 PMCID: PMC7016966 DOI: 10.3390/cancers12010240] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 01/10/2020] [Accepted: 01/13/2020] [Indexed: 12/14/2022] Open
Abstract
Signal Transducer and Activator of Transcription (STAT) 3 and 5 are important effectors of cellular transformation, and aberrant STAT3 and STAT5 signaling have been demonstrated in hematopoietic cancers. STAT3 and STAT5 are common targets for different tyrosine kinase oncogenes (TKOs). In addition, STAT3 and STAT5 proteins were shown to contain activating mutations in some rare but aggressive leukemias/lymphomas. Both proteins also contribute to drug resistance in hematopoietic malignancies and are now well recognized as major targets in cancer treatment. The development of inhibitors targeting STAT3 and STAT5 has been the subject of intense investigations during the last decade. This review summarizes the current knowledge of oncogenic STAT3 and STAT5 functions in hematopoietic cancers as well as advances in preclinical and clinical development of pharmacological inhibitors.
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Affiliation(s)
- Marie Brachet-Botineau
- Leukemic Niche and Oxidative metabolism (LNOx), CNRS ERL 7001, University of Tours, 37000 Tours, France;
| | - Marion Polomski
- Innovation Moléculaire et Thérapeutique (IMT), EA 7501, University of Tours, 37000 Tours, France; (M.P.); (L.J.); (D.H.); (M.-C.V.-M.); (G.P.)
| | - Heidi A. Neubauer
- Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, A-1210 Vienna, Austria;
| | - Ludovic Juen
- Innovation Moléculaire et Thérapeutique (IMT), EA 7501, University of Tours, 37000 Tours, France; (M.P.); (L.J.); (D.H.); (M.-C.V.-M.); (G.P.)
| | - Damien Hédou
- Innovation Moléculaire et Thérapeutique (IMT), EA 7501, University of Tours, 37000 Tours, France; (M.P.); (L.J.); (D.H.); (M.-C.V.-M.); (G.P.)
| | - Marie-Claude Viaud-Massuard
- Innovation Moléculaire et Thérapeutique (IMT), EA 7501, University of Tours, 37000 Tours, France; (M.P.); (L.J.); (D.H.); (M.-C.V.-M.); (G.P.)
| | - Gildas Prié
- Innovation Moléculaire et Thérapeutique (IMT), EA 7501, University of Tours, 37000 Tours, France; (M.P.); (L.J.); (D.H.); (M.-C.V.-M.); (G.P.)
| | - Fabrice Gouilleux
- Leukemic Niche and Oxidative metabolism (LNOx), CNRS ERL 7001, University of Tours, 37000 Tours, France;
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24
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CDK5-dependent phosphorylation and nuclear translocation of TRIM59 promotes macroH2A1 ubiquitination and tumorigenicity. Nat Commun 2019; 10:4013. [PMID: 31488827 PMCID: PMC6728346 DOI: 10.1038/s41467-019-12001-2] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 08/13/2019] [Indexed: 12/27/2022] Open
Abstract
Despite the development of adjuvant therapies, glioblastoma (GBM) patients remain incurable, thus justifying the urgent need of new therapies. CDK5 plays a critical role in GBM and is a potential target for GBM. However, the mechanism by which CDK5 promotes GBM tumorigenicity remains largely unknown. Here, we identify TRIM59 as a substrate of CDK5. EGFR-activated CDK5 directly binds to and phosphorylates TRIM59, a ubiquitin ligase at serine 308, which recruits PIN1 for cis–trans isomerization of TRIM59, leading to TRIM59 binding to importin α5 and nuclear translocation. Nuclear TRIM59 induces ubiquitination and degradation of the tumor suppressive histone variant macroH2A1, leading to enhanced STAT3 signaling activation and tumorigenicity. These findings are confirmed by inhibition of CDK5-activated TRIM59 activity that results in suppression of intracranial tumor growth. Correlative expressions of the components of this pathway are clinically prognostic. Our findings suggest targeting CDK5/TRIM59 signaling axis as a putative strategy for treating GBM. CDK5 is known to drive glioblastoma tumorigenicity but the downstream molecular mechanism is unknown. Here, the authors show that CDK5 activates STAT3 signalling via the nuclear import of TRIM59, which leads to the degradation of the tumour suppressor macroH2A1.
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25
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Belo Y, Mielko Z, Nudelman H, Afek A, Ben-David O, Shahar A, Zarivach R, Gordan R, Arbely E. Unexpected implications of STAT3 acetylation revealed by genetic encoding of acetyl-lysine. Biochim Biophys Acta Gen Subj 2019; 1863:1343-1350. [PMID: 31170499 DOI: 10.1016/j.bbagen.2019.05.019] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 05/23/2019] [Accepted: 05/30/2019] [Indexed: 02/06/2023]
Abstract
The signal transducer and activator of transcription 3 (STAT3) protein is activated by phosphorylation of a specific tyrosine residue (Tyr705) in response to various extracellular signals. STAT3 activity was also found to be regulated by acetylation of Lys685. However, the molecular mechanism by which Lys685 acetylation affects the transcriptional activity of STAT3 remains elusive. By genetically encoding the co-translational incorporation of acetyl-lysine into position Lys685 and co-expression of STAT3 with the Elk receptor tyrosine kinase, we were able to characterize site-specifically acetylated, and simultaneously acetylated and phosphorylated STAT3. We measured the effect of acetylation on the crystal structure, and DNA binding affinity and specificity of Tyr705-phosphorylated and non-phosphorylated STAT3. In addition, we monitored the deacetylation of acetylated Lys685 by reconstituting the mammalian enzymatic deacetylation reaction in live bacteria. Surprisingly, we found that acetylation, per se, had no effect on the crystal structure, and DNA binding affinity or specificity of STAT3, implying that the previously observed acetylation-dependent transcriptional activity of STAT3 involves an additional cellular component. In addition, we discovered that Tyr705-phosphorylation protects Lys685 from deacetylation in bacteria, providing a new possible explanation for the observed correlation between STAT3 activity and Lys685 acetylation.
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Affiliation(s)
- Yael Belo
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Zachery Mielko
- Center for Genomic and Computational Biology, Department of Biostatistics and Bioinformatics, Duke University, Durham, NC 27708, USA
| | - Hila Nudelman
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Ariel Afek
- Center for Genomic and Computational Biology, Department of Biostatistics and Bioinformatics, Duke University, Durham, NC 27708, USA
| | - Oshrit Ben-David
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel; The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Anat Shahar
- The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Raz Zarivach
- The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel; Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva, 8410501, Israel
| | - Raluca Gordan
- Center for Genomic and Computational Biology, Department of Biostatistics and Bioinformatics, Duke University, Durham, NC 27708, USA; Department of Computer Science, Department of Molecular Genetics and Microbiology, Duke University, Durham, NC 27708, USA
| | - Eyal Arbely
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel; The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel; Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva, 8410501, Israel.
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26
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Kurdi M, Zgheib C, Booz GW. Recent Developments on the Crosstalk Between STAT3 and Inflammation in Heart Function and Disease. Front Immunol 2018; 9:3029. [PMID: 30619368 PMCID: PMC6305745 DOI: 10.3389/fimmu.2018.03029] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 12/07/2018] [Indexed: 12/27/2022] Open
Abstract
The transcription factor STAT3 has a protective function in the heart. Until recently, the role of STAT3 in hypertension-induced cardiac hypertrophy was unsettled. Earlier studies revealed that global reduction of STAT3 activity reduced cardiac hypertrophy with hypertension, but caused a disruption of myofilaments and increased contractile dysfunction. However, newer studies with cardiomyocyte-specific deletion of STAT3 indicate that STAT3 does not cause cardiac hypertrophy with increased blood pressure. Rather, cardiac STAT3 is important for maintaining metabolic homeostasis, and loss of STAT3 in cardiomyocytes makes the heart more susceptible to chronic pathological insult, for example by disrupting glucose metabolism and protective signaling networks via the upregulation of certain microRNAs. This scenario has implications for understanding peripartum cardiomyopathy as well. In viral myocarditis, STAT3 opposes the initiation of the dilated phenotype by maintaining membrane integrity via the expression of dystrophin. STAT3 signaling was also found to attenuate myocarditis by polarizing macrophages to a less inflammatory phenotype. On the other hand, STAT3 contributes to immune-mediated myocarditis due to IL-6-induced complement component C3 production in the liver, as well as the differentiation of Th17 cells, which play a role in initiation and development of myocarditis. Besides canonical signaling pathways, unphosphorylated STAT3 (U-STAT3) and redox-activated STAT3 have been shown to couple to transcription in the heart. In addition, tissue signaling cytokines such as IL-22 and IL-17 have been proposed to have actions on the heart that involve STAT3, but are not fully defined. Understanding the novel and often protective aspects of STAT3 in the myocardium could lead to new therapeutic approaches to treat heart disease.
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Affiliation(s)
- Mazen Kurdi
- Faculty of Sciences, Department of Chemistry and Biochemistry, and The Laboratory of Experimental and Clinical Pharmacology, Lebanese University, Beirut, Lebanon
| | - Carlos Zgheib
- Laboratory for Fetal and Regenerative Biology, Department of Surgery, School of Medicine, University of Colorado Denver, Anschutz Medical Campus and Colorado Children's Hospital, Aurora, CO, United States
| | - George W. Booz
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS, United States
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27
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Nan Y, Wu C, Zhang YJ. Interferon Independent Non-Canonical STAT Activation and Virus Induced Inflammation. Viruses 2018; 10:v10040196. [PMID: 29662014 PMCID: PMC5923490 DOI: 10.3390/v10040196] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 04/07/2018] [Accepted: 04/11/2018] [Indexed: 02/06/2023] Open
Abstract
Interferons (IFNs) are a group of secreted proteins that play critical roles in antiviral immunity, antitumor activity, activation of cytotoxic T cells, and modulation of host immune responses. IFNs are cytokines, and bind receptors on cell surfaces to trigger signal transduction. The major signaling pathway activated by IFNs is the JAK/STAT (Janus kinase/signal transducer and activator of transcription) pathway, a complex pathway involved in both viral and host survival strategies. On the one hand, viruses have evolved strategies to escape from antiviral host defenses evoked by IFN-activated JAK/STAT signaling. On the other hand, viruses have also evolved to exploit the JAK/STAT pathway to evoke activation of certain STATs that somehow promote viral pathogenesis. In this review, recent progress in our understanding of the virus-induced IFN-independent STAT signaling and its potential roles in viral induced inflammation and pathogenesis are summarized in detail, and perspectives are provided.
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Affiliation(s)
- Yuchen Nan
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China.
- Molecular Virology Laboratory, VA-MD College of Veterinary Medicine and Maryland Pathogen Research Institute, University of Maryland, College Park, MD 20742, USA.
| | - Chunyan Wu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Yan-Jin Zhang
- Molecular Virology Laboratory, VA-MD College of Veterinary Medicine and Maryland Pathogen Research Institute, University of Maryland, College Park, MD 20742, USA.
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28
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Implications of STAT3 and STAT5 signaling on gene regulation and chromatin remodeling in hematopoietic cancer. Leukemia 2018; 32:1713-1726. [PMID: 29728695 PMCID: PMC6087715 DOI: 10.1038/s41375-018-0117-x] [Citation(s) in RCA: 147] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 03/07/2018] [Accepted: 03/13/2018] [Indexed: 02/06/2023]
Abstract
STAT3 and STAT5 proteins are oncogenic downstream mediators of the JAK–STAT pathway. Deregulated STAT3 and STAT5 signaling promotes cancer cell proliferation and survival in conjunction with other core cancer pathways. Nuclear phosphorylated STAT3 and STAT5 regulate cell-type-specific transcription profiles via binding to promoter elements and exert more complex functions involving interaction with various transcriptional coactivators or corepressors and chromatin remodeling proteins. The JAK–STAT pathway can rapidly reshape the chromatin landscape upon cytokine, hormone, or growth factor stimulation and unphosphorylated STAT proteins also appear to be functional with respect to regulating chromatin accessibility. Notably, cancer genome landscape studies have implicated mutations in various epigenetic modifiers as well as the JAK–STAT pathway as underlying causes of many cancers, particularly acute leukemia and lymphomas. However, it is incompletely understood how mutations within these pathways can interact and synergize to promote cancer. We summarize the current knowledge of oncogenic STAT3 and STAT5 functions downstream of cytokine signaling and provide details on prerequisites for DNA binding and gene transcription. We also discuss key interactions of STAT3 and STAT5 with chromatin remodeling factors such as DNA methyltransferases, histone modifiers, cofactors, corepressors, and other transcription factors.
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29
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Galoczova M, Coates P, Vojtesek B. STAT3, stem cells, cancer stem cells and p63. Cell Mol Biol Lett 2018; 23:12. [PMID: 29588647 PMCID: PMC5863838 DOI: 10.1186/s11658-018-0078-0] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 03/07/2018] [Indexed: 12/15/2022] Open
Abstract
Signal Transducer and Activator of Transcription 3 (STAT3) is a transcription factor with many important functions in the biology of normal and transformed cells. Its regulation is highly complex as it is involved in signaling pathways in many different cell types and under a wide variety of conditions. Besides other functions, STAT3 is an important regulator of normal stem cells and cancer stem cells. p63 which is a member of the p53 protein family is also involved in these functions and is both physically and functionally connected with STAT3. This review summarizes STAT3 function and regulation, its role in stem cell and cancer stem cell properties and highlights recent reports about its relationship to p63.
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Affiliation(s)
- Michaela Galoczova
- Regional Centre for Applied Molecular Oncology, Masaryk Memorial Cancer Institute, Zluty kopec 7, 656 53 Brno, Czech Republic
| | - Philip Coates
- Regional Centre for Applied Molecular Oncology, Masaryk Memorial Cancer Institute, Zluty kopec 7, 656 53 Brno, Czech Republic
| | - Borivoj Vojtesek
- Regional Centre for Applied Molecular Oncology, Masaryk Memorial Cancer Institute, Zluty kopec 7, 656 53 Brno, Czech Republic
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30
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Sang Y, Li Y, Song L, Alvarez AA, Zhang W, Lv D, Tang J, Liu F, Chang Z, Hatakeyama S, Hu B, Cheng SY, Feng H. TRIM59 Promotes Gliomagenesis by Inhibiting TC45 Dephosphorylation of STAT3. Cancer Res 2018; 78:1792-1804. [PMID: 29386185 DOI: 10.1158/0008-5472.can-17-2774] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 11/21/2017] [Accepted: 01/25/2018] [Indexed: 02/06/2023]
Abstract
Aberrant EGFR signaling is a common driver of glioblastoma (GBM) pathogenesis; however, the downstream effectors that sustain this oncogenic pathway remain unclarified. Here we demonstrate that tripartite motif-containing protein 59 (TRIM59) acts as a new downstream effector of EGFR signaling by regulating STAT3 activation in GBM. EGFR signaling led to TRIM59 upregulation through SOX9 and enhanced the interaction between TRIM59 and nuclear STAT3, which prevents STAT3 dephosphorylation by the nuclear form of T-cell protein tyrosine phosphatase (TC45), thereby maintaining transcriptional activation and promoting tumorigenesis. Silencing TRIM59 suppresses cell proliferation, migration, and orthotopic xenograft brain tumor formation of GBM cells and glioma stem cells. Evaluation of GBM patient samples revealed an association between EGFR activation, TRIM59 expression, STAT3 phosphorylation, and poor prognoses. Our study identifies TRIM59 as a new regulator of oncogenic EGFR/STAT3 signaling and as a potential therapeutic target for GBM patients with EGFR activation.Significance: These findings identify a novel component of the EGFR/STAT3 signaling axis in the regulation of glioma tumorigenesis. Cancer Res; 78(7); 1792-804. ©2018 AACR.
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Affiliation(s)
- Youzhou Sang
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yanxin Li
- Key Laboratory of Pediatric Hematology and Oncology Ministry of Health, Pediatric Translational Medicine Institute, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
| | - Lina Song
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Angel A Alvarez
- Department of Neurology, Northwestern Brain Tumor Institute, The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Weiwei Zhang
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Deguan Lv
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jianming Tang
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Feng Liu
- National Research Center for Translational Medicine (Shanghai), State Key Laboratory of Medical Genomics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhijie Chang
- School of Medicine, Tsinghua University, Beijing, China
| | - Shigetsugu Hatakeyama
- Department of Biochemistry, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Bo Hu
- Department of Neurology, Northwestern Brain Tumor Institute, The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Shi-Yuan Cheng
- Department of Neurology, Northwestern Brain Tumor Institute, The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Haizhong Feng
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
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Stark GR, Cheon H, Wang Y. Responses to Cytokines and Interferons that Depend upon JAKs and STATs. Cold Spring Harb Perspect Biol 2018; 10:cshperspect.a028555. [PMID: 28620095 DOI: 10.1101/cshperspect.a028555] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Many cytokines and all interferons activate members of a small family of kinases (the Janus kinases [JAKs]) and a slightly larger family of transcription factors (the signal transducers and activators of transcription [STATs]), which are essential components of pathways that induce the expression of specific sets of genes in susceptible cells. JAK-STAT pathways are required for many innate and acquired immune responses, and the activities of these pathways must be finely regulated to avoid major immune dysfunctions. Regulation is achieved through mechanisms that include the activation or induction of potent negative regulatory proteins, posttranslational modification of the STATs, and other modulatory effects that are cell-type specific. Mutations of JAKs and STATs can result in gains or losses of function and can predispose affected individuals to autoimmune disease, susceptibility to a variety of infections, or cancer. Here we review recent developments in the biochemistry, genetics, and biology of JAKs and STATs.
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Affiliation(s)
- George R Stark
- Department of Cancer Biology, Lerner Research Institute of the Cleveland Clinic, Cleveland, Ohio 44195
| | - HyeonJoo Cheon
- Department of Cancer Biology, Lerner Research Institute of the Cleveland Clinic, Cleveland, Ohio 44195
| | - Yuxin Wang
- Department of Cancer Biology, Lerner Research Institute of the Cleveland Clinic, Cleveland, Ohio 44195
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Nan Y, Wu C, Zhang YJ. Interplay between Janus Kinase/Signal Transducer and Activator of Transcription Signaling Activated by Type I Interferons and Viral Antagonism. Front Immunol 2017; 8:1758. [PMID: 29312301 PMCID: PMC5732261 DOI: 10.3389/fimmu.2017.01758] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 11/27/2017] [Indexed: 12/13/2022] Open
Abstract
Interferons (IFNs), which were discovered a half century ago, are a group of secreted proteins that play key roles in innate immunity against viral infection. The major signaling pathway activated by IFNs is the Janus kinase/signal transducer and activator of transcription (JAK/STAT) pathway, which leads to the expression of IFN-stimulated genes (ISGs), including many antiviral effectors. Viruses have evolved various strategies with which to antagonize the JAK/STAT pathway to influence viral virulence and pathogenesis. In recent years, notable progress has been made to better understand the JAK/STAT pathway activated by IFNs and antagonized by viruses. In this review, recent progress in research of the JAK/STAT pathway activated by type I IFNs, non-canonical STAT activation, viral antagonism of the JAK/STAT pathway, removing of the JAK/STAT antagonist from viral genome for attenuation, and the potential pathogenesis roles of tyrosine phosphorylation-independent non-canonical STATs activation during virus infection are discussed in detail. We expect that this review will provide new insight into the understanding the complexity of the interplay between JAK/STAT signaling and viral antagonism.
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Affiliation(s)
- Yuchen Nan
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, China.,Molecular Virology Laboratory, VA-MD Regional College of Veterinary Medicine, Maryland Pathogen Research Institute, University of Maryland, College Park, MD, United States
| | - Chunyan Wu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Yan-Jin Zhang
- Molecular Virology Laboratory, VA-MD Regional College of Veterinary Medicine, Maryland Pathogen Research Institute, University of Maryland, College Park, MD, United States
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33
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Lv D, Li Y, Zhang W, Alvarez AA, Song L, Tang J, Gao WQ, Hu B, Cheng SY, Feng H. TRIM24 is an oncogenic transcriptional co-activator of STAT3 in glioblastoma. Nat Commun 2017; 8:1454. [PMID: 29129908 PMCID: PMC5682287 DOI: 10.1038/s41467-017-01731-w] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 10/12/2017] [Indexed: 12/17/2022] Open
Abstract
Aberrant amplification and mutations of epidermal growth factor receptor (EGFR) are the most common oncogenic events in glioblastoma (GBM), but the mechanisms by which they promote aggressive pathogenesis are not well understood. Here, we determine that non-canonical histone signature acetylated H3 lysine 23 (H3K23ac)-binding protein tripartite motif-containing 24 (TRIM24) is upregulated in clinical GBM specimens and required for EGFR-driven tumorigenesis. In multiple glioma cell lines and patient-derived glioma stem cells (GSCs), EGFR signaling promotes H3K23 acetylation and association with TRIM24. Consequently, TRIM24 functions as a transcriptional co-activator and recruits STAT3, leading to stabilized STAT3-chromatin interactions and subsequent activation of STAT3 downstream signaling, thereby enhancing EGFR-driven tumorigenesis. Our findings uncover a pathway in which TRIM24 functions as a signal relay for oncogenic EGFR signaling and suggest TRIM24 as a potential therapeutic target for GBM that are associated with EGFR activation. EGF receptor (EGFR) amplification and mutation are major drivers in glioma tumorigenesis but this mechanism is not well understood. Here, the authors show EGFR-upregulated H3K23ac binds TRIM24 which recruits STAT3, leading to activation of STAT3 signaling, enhancing EGFR-driven tumorigenesis.
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Affiliation(s)
- Deguan Lv
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China.,School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 310000, China
| | - Yanxin Li
- Key Laboratory of Pediatric Hematology and Oncology Ministry of Health, Pediatric Translational Medicine Institute, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Weiwei Zhang
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Angel A Alvarez
- Department of Neurology, Northwestern Brain Tumor Institute, The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Lina Song
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Jianming Tang
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Wei-Qiang Gao
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Bo Hu
- Department of Neurology, Northwestern Brain Tumor Institute, The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Shi-Yuan Cheng
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China.,Department of Neurology, Northwestern Brain Tumor Institute, The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Haizhong Feng
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China.
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STAT3 Undergoes Acetylation-dependent Mitochondrial Translocation to Regulate Pyruvate Metabolism. Sci Rep 2016; 6:39517. [PMID: 28004755 PMCID: PMC5177931 DOI: 10.1038/srep39517] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 11/24/2016] [Indexed: 12/11/2022] Open
Abstract
Cytoplasmic STAT3, after activation by growth factors, translocates to different subcellular compartments, including nuclei and mitochondria, where it carries out different biological functions. However, the precise mechanism by which STAT3 undergoes mitochondrial translocation and subsequently regulates the tricarboxylic acid (TCA) cycle-electron transport chain (ETC) remains poorly understood. Here, we clarify this process by visualizing STAT3 acetylation in starved cells after serum reintroduction or insulin stimulation. CBP-acetylated STAT3 undergoes mitochondrial translocation in response to serum introduction or insulin stimulation. In mitochondria, STAT3 associates with the pyruvate dehydrogenase complex E1 (PDC-E1) and subsequently accelerates the conversion of pyruvate to acetyl-CoA, elevates the mitochondrial membrane potential, and promotes ATP synthesis. SIRT5 deacetylates STAT3, thereby inhibiting its function in mitochondrial pyruvate metabolism. In the A549 lung cancer cell line, constitutively acetylated STAT3 localizes to mitochondria, where it maintains the mitochondrial membrane potential and ATP synthesis in an active state.
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Thiagarajan D, Vedantham S, Ananthakrishnan R, Schmidt AM, Ramasamy R. Mechanisms of transcription factor acetylation and consequences in hearts. BIOCHIMICA ET BIOPHYSICA ACTA 2016; 1862:2221-2231. [PMID: 27543804 PMCID: PMC5159280 DOI: 10.1016/j.bbadis.2016.08.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 08/12/2016] [Accepted: 08/14/2016] [Indexed: 01/06/2023]
Abstract
Acetylation of proteins as a post-translational modification is gaining rapid acceptance as a cellular control mechanism on par with other protein modification mechanisms such as phosphorylation and ubiquitination. Through genetic manipulations and evolving proteomic technologies, identification and consequences of transcription factor acetylation is beginning to emerge. In this review, we summarize the field and discuss newly unfolding mechanisms and consequences of transcription factor acetylation in normal and stressed hearts. This article is part of a Special Issue entitled: The role of post-translational protein modifications on heart and vascular metabolism edited by Jason R.B. Dyck & Jan F.C. Glatz.
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Affiliation(s)
- Devi Thiagarajan
- Diabetes Research Program, Division of Endocrinology, Department of Medicine, NYU Langone Medical Center, NY, New York 10016, United States
| | | | - Radha Ananthakrishnan
- Diabetes Research Program, Division of Endocrinology, Department of Medicine, NYU Langone Medical Center, NY, New York 10016, United States
| | - Ann Marie Schmidt
- Diabetes Research Program, Division of Endocrinology, Department of Medicine, NYU Langone Medical Center, NY, New York 10016, United States
| | - Ravichandran Ramasamy
- Diabetes Research Program, Division of Endocrinology, Department of Medicine, NYU Langone Medical Center, NY, New York 10016, United States.
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Sun Y, Iyer M, McEachin R, Zhao M, Wu YM, Cao X, Oravecz-Wilson K, Zajac C, Mathewson N, Wu SRJ, Rossi C, Toubai T, Qin ZS, Chinnaiyan AM, Reddy P. Genome-Wide STAT3 Binding Analysis after Histone Deacetylase Inhibition Reveals Novel Target Genes in Dendritic Cells. J Innate Immun 2016; 9:126-144. [PMID: 27866206 DOI: 10.1159/000450681] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 09/08/2016] [Indexed: 01/12/2023] Open
Abstract
STAT3 is a master transcriptional regulator that plays an important role in the induction of both immune activation and immune tolerance in dendritic cells (DCs). The transcriptional targets of STAT3 in promoting DC activation are becoming increasingly understood; however, the mechanisms underpinning its role in causing DC suppression remain largely unknown. To determine the functional gene targets of STAT3, we compared the genome-wide binding of STAT3 using ChIP sequencing coupled with gene expression microarrays to determine STAT3-dependent gene regulation in DCs after histone deacetylase (HDAC) inhibition. HDAC inhibition boosted the ability of STAT3 to bind to distinct DNA targets and regulate gene expression. Among the top 500 STAT3 binding sites, the frequency of canonical motifs was significantly higher than that of noncanonical motifs. Functional analysis revealed that after treatment with an HDAC inhibitor, the upregulated STAT3 target genes were those that were primarily the negative regulators of proinflammatory cytokines and those in the IL-10 signaling pathway. The downregulated STAT3-dependent targets were those involved in immune effector processes and antigen processing/presentation. The expression and functional relevance of these genes were validated. Specifically, functional studies confirmed that the upregulation of IL-10Ra by STAT3 contributed to the suppressive function of DCs following HDAC inhibition.
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Affiliation(s)
- Yaping Sun
- Division of Hematology/Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, Mich., USA
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37
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Mitochondrial STAT3: Powering up a potent factor. Cytokine 2016; 87:20-5. [DOI: 10.1016/j.cyto.2016.05.019] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 05/21/2016] [Indexed: 11/21/2022]
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38
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Hillmer EJ, Zhang H, Li HS, Watowich SS. STAT3 signaling in immunity. Cytokine Growth Factor Rev 2016; 31:1-15. [PMID: 27185365 PMCID: PMC5050093 DOI: 10.1016/j.cytogfr.2016.05.001] [Citation(s) in RCA: 418] [Impact Index Per Article: 52.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 05/06/2016] [Indexed: 12/12/2022]
Abstract
The transcriptional regulator STAT3 has key roles in vertebrate development and mature tissue function including control of inflammation and immunity. Mutations in human STAT3 associate with diseases such as immunodeficiency, autoimmunity and cancer. Strikingly, however, either hyperactivation or inactivation of STAT3 results in human disease, indicating tightly regulated STAT3 function is central to health. Here, we attempt to summarize information on the numerous and distinct biological actions of STAT3, and highlight recent discoveries, with a specific focus on STAT3 function in the immune and hematopoietic systems. Our goal is to spur investigation on mechanisms by which aberrant STAT3 function drives human disease and novel approaches that might be used to modulate disease outcome.
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Affiliation(s)
- Emily J Hillmer
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Huiyuan Zhang
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Haiyan S Li
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Stephanie S Watowich
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; The University of Texas Graduate School of Biomedical Sciences, Houston, TX 77030, USA.
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39
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Ouédraogo ZG, Biau J, Kemeny JL, Morel L, Verrelle P, Chautard E. Role of STAT3 in Genesis and Progression of Human Malignant Gliomas. Mol Neurobiol 2016; 54:5780-5797. [PMID: 27660268 DOI: 10.1007/s12035-016-0103-0] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 09/06/2016] [Indexed: 12/23/2022]
Abstract
Signal transducer and activator of transcription 3 (STAT3) is aberrantly activated in glioblastoma and has been identified as a relevant therapeutic target in this disease and many other human cancers. After two decades of intensive research, there is not yet any approved STAT3-based glioma therapy. In addition to the canonical activation by tyrosine 705 phosphorylation, concordant reports described a potential therapeutic relevance of other post-translational modifications including mainly serine 727 phosphorylation. Such reports reinforce the need to refine the strategy of targeting STAT3 in each concerned disease. This review focuses on the role of serine 727 and tyrosine 705 phosphorylation of STAT3 in glioma. It explores their contribution to glial cell transformation and to the mechanisms that make glioma escape to both immune control and standard treatment.
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Affiliation(s)
- Zangbéwendé Guy Ouédraogo
- Clermont Université, Université d'Auvergne, EA 7283, CREaT, BP 10448, F-63000, Clermont-Ferrand, France.,Département de Radiothérapie, Laboratoire de Radio-Oncologie Expérimentale, Centre Jean Perrin, EA7283 CREaT - Université d'Auvergne, 58 rue Montalembert, F-63000-63011, Clermont Ferrand, France.,Laboratoire de Pharmacologie, de Toxicologie et de Chimie Thérapeutique, Université de Ouagadougou, 03, Ouagadougou, BP 7021, Burkina Faso
| | - Julian Biau
- Clermont Université, Université d'Auvergne, EA 7283, CREaT, BP 10448, F-63000, Clermont-Ferrand, France.,Département de Radiothérapie, Laboratoire de Radio-Oncologie Expérimentale, Centre Jean Perrin, EA7283 CREaT - Université d'Auvergne, 58 rue Montalembert, F-63000-63011, Clermont Ferrand, France.,Département de Radiothérapie, Institut Curie, 91405, Orsay, France
| | - Jean-Louis Kemeny
- Clermont Université, Université d'Auvergne, EA 7283, CREaT, BP 10448, F-63000, Clermont-Ferrand, France.,CHU Clermont-Ferrand, Service d'Anatomopathologie, F-63003, Clermont-Ferrand, France
| | - Laurent Morel
- Clermont Université, Université Blaise-Pascal, GReD, UMR CNRS 6293, INSERM U1103, 24 Avenue des Landais BP80026, 63171, Aubière, France
| | - Pierre Verrelle
- Clermont Université, Université d'Auvergne, EA 7283, CREaT, BP 10448, F-63000, Clermont-Ferrand, France.,Département de Radiothérapie, Laboratoire de Radio-Oncologie Expérimentale, Centre Jean Perrin, EA7283 CREaT - Université d'Auvergne, 58 rue Montalembert, F-63000-63011, Clermont Ferrand, France.,Département de Radiothérapie, Institut Curie, 91405, Orsay, France
| | - Emmanuel Chautard
- Clermont Université, Université d'Auvergne, EA 7283, CREaT, BP 10448, F-63000, Clermont-Ferrand, France. .,Département de Radiothérapie, Laboratoire de Radio-Oncologie Expérimentale, Centre Jean Perrin, EA7283 CREaT - Université d'Auvergne, 58 rue Montalembert, F-63000-63011, Clermont Ferrand, France.
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Zimmers TA, Fishel ML, Bonetto A. STAT3 in the systemic inflammation of cancer cachexia. Semin Cell Dev Biol 2016; 54:28-41. [PMID: 26860754 PMCID: PMC4867234 DOI: 10.1016/j.semcdb.2016.02.009] [Citation(s) in RCA: 156] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 02/04/2016] [Indexed: 02/07/2023]
Abstract
Weight loss is diagnostic of cachexia, a debilitating syndrome contributing mightily to morbidity and mortality in cancer. Most research has probed mechanisms leading to muscle atrophy and adipose wasting in cachexia; however cachexia is a truly systemic phenomenon. Presence of the tumor elicits an inflammatory response and profound metabolic derangements involving not only muscle and fat, but also the hypothalamus, liver, heart, blood, spleen and likely other organs. This global response is orchestrated in part through circulating cytokines that rise in conditions of cachexia. Exogenous Interleukin-6 (IL6) and related cytokines can induce most cachexia symptomatology, including muscle and fat wasting, the acute phase response and anemia, while IL-6 inhibition reduces muscle loss in cancer. Although mechanistic studies are ongoing, certain of these cachexia phenotypes have been causally linked to the cytokine-activated transcription factor, STAT3, including skeletal muscle wasting, cardiac dysfunction and hypothalamic inflammation. Correlative studies implicate STAT3 in fat wasting and the acute phase response in cancer cachexia. Parallel data in non-cancer models and disease states suggest both pathological and protective functions for STAT3 in other organs during cachexia. STAT3 also contributes to cancer cachexia through enhancing tumorigenesis, metastasis and immune suppression, particularly in tumors associated with high prevalence of cachexia. This review examines the evidence linking STAT3 to multi-organ manifestations of cachexia and the potential and perils for targeting STAT3 to reduce cachexia and prolong survival in cancer patients.
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Affiliation(s)
- Teresa A Zimmers
- Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, United States; Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, IN 46202, United States; IU Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN 46202, United States; IUPUI Center for Cachexia Research Innovation and Therapy, Indiana University School of Medicine, Indianapolis, IN 46202, United States.
| | - Melissa L Fishel
- IU Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN 46202, United States; Department of Pediatrics, Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46202, United States; Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN 46202, United States.
| | - Andrea Bonetto
- Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, United States; IU Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN 46202, United States; IUPUI Center for Cachexia Research Innovation and Therapy, Indiana University School of Medicine, Indianapolis, IN 46202, United States.
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41
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Qiao L, Xu C, Li Q, Mei Z, Li X, Cai H, Liu W. Photodynamic therapy activated STAT3 associated pathways: Targeting intrinsic apoptotic pathways to increase PDT efficacy in human squamous carcinoma cells. Photodiagnosis Photodyn Ther 2016; 14:119-27. [DOI: 10.1016/j.pdpdt.2015.11.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 11/06/2015] [Accepted: 11/16/2015] [Indexed: 02/07/2023]
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42
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Hypothalamic leptin action is mediated by histone deacetylase 5. Nat Commun 2016; 7:10782. [PMID: 26923837 PMCID: PMC4773494 DOI: 10.1038/ncomms10782] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 01/21/2016] [Indexed: 12/15/2022] Open
Abstract
Hypothalamic leptin signalling has a key role in food intake and energy-balance control and is often impaired in obese individuals. Here we identify histone deacetylase 5 (HDAC5) as a regulator of leptin signalling and organismal energy balance. Global HDAC5 KO mice have increased food intake and greater diet-induced obesity when fed high-fat diet. Pharmacological and genetic inhibition of HDAC5 activity in the mediobasal hypothalamus increases food intake and modulates pathways implicated in leptin signalling. We show HDAC5 directly regulates STAT3 localization and transcriptional activity via reciprocal STAT3 deacetylation at Lys685 and phosphorylation at Tyr705. In vivo, leptin sensitivity is substantially impaired in HDAC5 loss-of-function mice. Hypothalamic HDAC5 overexpression improves leptin action and partially protects against HFD-induced leptin resistance and obesity. Overall, our data suggest that hypothalamic HDAC5 activity is a regulator of leptin signalling that adapts food intake and body weight to our dietary environment. Histone deacetylases (HDACs) regulate energy metabolism in peripheral tissues, but whether HDACs expressed in the brain influence systemic metabolism is unknown. Here the authors show that hypothalamic HDAC5 expression is affected by the diet and HDAC5 regulates leptin sensitivity by deacetylating STAT3.
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43
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Xin H, Wang M, Tang W, Shen Z, Miao L, Wu W, Li C, Wang X, Xin X, Zhu YZ. Hydrogen Sulfide Attenuates Inflammatory Hepcidin by Reducing IL-6 Secretion and Promoting SIRT1-Mediated STAT3 Deacetylation. Antioxid Redox Signal 2016; 24:70-83. [PMID: 26154696 PMCID: PMC4742985 DOI: 10.1089/ars.2015.6315] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
AIMS Anemia of inflammation is quite prevalent in hospitalized patients with poor prognosis. Concerns about the effectiveness and safety of iron supplementation have arisen, driving the demand for alternative therapies. Induction of hepatic hepcidin, the master hormone of iron homeostasis, causes anemia under inflammatory conditions. Previous studies indicated that hydrogen sulfide (H2S), the third gasotransmitter and a well-known regulator of inflammation, may inhibit the secretion of inflammatory cytokines. We thus investigated the effect of H2S on inflammatory hepcidin induction. RESULTS H2S suppressed lipopolysaccharide (LPS)-induced hepcidin production and regulated iron homeostasis in mice by decreasing serum interleukin-6 (IL-6) and Janus kinase 2 (JAK2)/signal transducer and activator of transcription 3 (STAT3) activation; similar results were obtained in Huh7 cells exposed to conditioned medium from LPS-challenged THP-1 macrophages. Intriguingly, we found H2S also attenuated hepcidin levels in Huh7 cells and mouse primary hepatocytes in a sirtuin 1 (SIRT1)-dependent manner. By promoting SIRT1 expression and stabilizing SIRT1-STAT3 interactions, H2S ameliorated IL-6-induced STAT3 acetylation, resulting in reduced hepcidin production. Inhibition and silencing of SIRT1 diminished H2S-mediated suppression of hepcidin, as opposed to SIRT1 activation and overexpression. Consistent results were observed in vivo. Furthermore, knockout of cystathionine γ-lyase (CSE), an endogenous H2S synthase, exaggerated inflammatory hepcidin expression in mice. INNOVATION For the first time, we elucidated the effects and possible mechanisms of H2S on inflammatory hepcidin and established a novel regulatory link between SIRT1 and hepcidin. CONCLUSION Our work demonstrates that H2S attenuates inflammation-induced hepatic hepcidin via multipathways and suggests new treatment strategies for anemia of inflammation.
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Affiliation(s)
- Hong Xin
- 1 Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University , Shanghai, China
| | - Minjun Wang
- 1 Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University , Shanghai, China
| | - Wenbo Tang
- 2 Department of Oncology, School of Medicine, Fudan University , Shanghai, China
| | - Zhuqing Shen
- 1 Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University , Shanghai, China
| | - Lei Miao
- 1 Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University , Shanghai, China
| | - Weijun Wu
- 1 Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University , Shanghai, China
| | - Chengyi Li
- 1 Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University , Shanghai, China
| | - Xiling Wang
- 1 Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University , Shanghai, China
| | - Xiaoming Xin
- 1 Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University , Shanghai, China
| | - Yi Zhun Zhu
- 1 Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University , Shanghai, China .,3 Department of Pharmacology, National University of Singapore , Singapore
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Srivastava J, DiGiovanni J. Non-canonical Stat3 signaling in cancer. Mol Carcinog 2015; 55:1889-1898. [PMID: 26649644 DOI: 10.1002/mc.22438] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 11/06/2015] [Accepted: 11/09/2015] [Indexed: 01/27/2023]
Abstract
Stat3 is a member of the signal transducers and activators of transcription family and is a known regulator of essential biologic processes including angiogenesis, apoptosis, cell cycle progression, and cell migration. Canonical Stat3-mediated signaling involves tyrosine phosphorylation on specific residues that leads to homodimerization and translocation to the nucleus. For many years it was presumed that most, if not all, of the functions of Stat3, both normal and aberrant, were due to the canonical cytokine and growth factor signaling mechanisms. Recent studies suggest that Stat3 functions through alternate non-canonical pathways to bring about some of these biological functions both in normal cells as well as during cancer development and progression. A number of studies have now shown that Stat3 has a function in mitochondria and that unphosphorylated Stat3 (uStat3) can also function as a transcription factor broadening the potential mechanisms involved in Stat3 action. In this review article, we discuss these two main non-canonical functions of Stat3 and their potential roles in oncogenesis. Given the many facets of Stat3 signaling, additional comprehensive investigations are required to fully understand the role of non-canonical Stat3 signaling in cancer and whether these pathways can be targeted for cancer prevention and treatment. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- Jaya Srivastava
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Austin, Texas
| | - John DiGiovanni
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Austin, Texas
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Zouein FA, Altara R, Chen Q, Lesnefsky EJ, Kurdi M, Booz GW. Pivotal Importance of STAT3 in Protecting the Heart from Acute and Chronic Stress: New Advancement and Unresolved Issues. Front Cardiovasc Med 2015; 2:36. [PMID: 26664907 PMCID: PMC4671345 DOI: 10.3389/fcvm.2015.00036] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 11/12/2015] [Indexed: 12/25/2022] Open
Abstract
The transcription factor, signal transducer and activator of transcription 3 (STAT3), has been implicated in protecting the heart from acute ischemic injury under both basal conditions and as a crucial component of pre- and post-conditioning protocols. A number of anti-oxidant and antiapoptotic genes are upregulated by STAT3 via canonical means involving phosphorylation on Y705 and S727, although other incompletely defined posttranslational modifications are involved. In addition, STAT3 is now known to be present in cardiac mitochondria and to exert actions that regulate the electron transport chain, reactive oxygen species production, and mitochondrial permeability transition pore opening. These non-canonical actions of STAT3 are enhanced by S727 phosphorylation. The molecular basis for the mitochondrial actions of STAT3 is poorly understood, but STAT3 is known to interact with a critical subunit of complex I and to regulate complex I function. Dysfunctional complex I has been implicated in ischemic injury, heart failure, and the aging process. Evidence also indicates that STAT3 is protective to the heart under chronic stress conditions, including hypertension, pregnancy, and advanced age. Paradoxically, the accumulation of unphosphorylated STAT3 (U-STAT3) in the nucleus has been suggested to drive pathological cardiac hypertrophy and inflammation via non-canonical gene expression, perhaps involving a distinct acetylation profile. U-STAT3 may also regulate chromatin stability. Our understanding of how the non-canonical genomic and mitochondrial actions of STAT3 in the heart are regulated and coordinated with the canonical actions of STAT3 is rudimentary. Here, we present an overview of what is currently known about the pleotropic actions of STAT3 in the heart in order to highlight controversies and unresolved issues.
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Affiliation(s)
- Fouad A Zouein
- American University of Beirut Faculty of Medicine , Beirut , Lebanon
| | - Raffaele Altara
- Department of Pharmacology and Toxicology, School of Medicine, The University of Mississippi Medical Center , Jackson, MS , USA
| | - Qun Chen
- Division of Cardiology, Department of Internal Medicine, Pauley Heart Center, Virginia Commonwealth University , Richmond, VA , USA
| | - Edward J Lesnefsky
- Division of Cardiology, Department of Internal Medicine, Pauley Heart Center, Virginia Commonwealth University , Richmond, VA , USA ; Department of Biochemistry and Molecular Biology, Virginia Commonwealth University , Richmond, VA , USA ; McGuire Department of Veterans Affairs Medical Center , Richmond, VA , USA
| | - Mazen Kurdi
- Department of Pharmacology and Toxicology, School of Medicine, The University of Mississippi Medical Center , Jackson, MS , USA ; Department of Chemistry and Biochemistry, Faculty of Sciences, Lebanese University , Hadath , Lebanon
| | - George W Booz
- Department of Pharmacology and Toxicology, School of Medicine, The University of Mississippi Medical Center , Jackson, MS , USA
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STAT3-driven transcription depends upon the dimethylation of K49 by EZH2. Proc Natl Acad Sci U S A 2015; 112:3985-90. [PMID: 25767098 DOI: 10.1073/pnas.1503152112] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Several transcription factors, including p53, NF-κB, and STAT3, are modified by the same enzymes that also modify histones, with important functional consequences. We have identified a previously unrecognized dimethylation of K49 of STAT3 that is crucial for the expression of many IL-6-dependent genes, catalyzed by the histone-modifying enzyme enhancer of zeste homolog 2 (EZH2). Loss of EZH2 is protumorigenic in leukemias, but its overexpression is protumorigenic in solid cancers. Connecting EZH2 to a functionally important methylation of STAT3, which is constitutively activated in many tumors, may help reveal the basis of the opposing roles of EZH2 in liquid and solid tumors and also may identify novel therapeutic opportunities.
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