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Li H, Chang L, Wu J, Huang J, Guan W, Bates LE, Stuart HT, Guo M, Zhang P, Huang B, Chen C, Zhang M, Chen J, Min M, Wu G, Hutchins AP, Silva JCR. In vitro generation of mouse morula-like cells. Dev Cell 2023; 58:2510-2527.e7. [PMID: 37875119 DOI: 10.1016/j.devcel.2023.09.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 04/21/2023] [Accepted: 09/29/2023] [Indexed: 10/26/2023]
Abstract
Generating cells with the molecular and functional properties of embryo cells and with full developmental potential is an aim with fundamental biological significance. Here we report the in vitro generation of mouse transient morula-like cells (MLCs) via the manipulation of signaling pathways. MLCs are molecularly distinct from embryonic stem cells (ESCs) and cluster instead with embryo 8- to 16-cell stage cells. A single MLC can generate a blastoid, and the efficiency increases to 80% when 8-10 MLCs are used. MLCs make embryoids directly, efficiently, and within 4 days. Transcriptomic analysis shows that day 4-5 MLC-derived embryoids contain the cell types found in natural embryos at early gastrulation. Furthermore, MLCs introduced into morulae segregate into epiblast (EPI), primitive endoderm (PrE), and trophectoderm (TE) fates in blastocyst chimeras and have a molecular signature indistinguishable from that of host embryo cells. These findings represent the generation of cells that are molecularly and functionally similar to the precursors of the first three cell lineages of the embryo.
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Affiliation(s)
- Huanhuan Li
- Guangzhou National Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China; Bioland Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China.
| | - Litao Chang
- Guangzhou National Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China; Guangzhou Medical University, Panyu District, Guangzhou, Guangdong Province 511495, China
| | - Jinyi Wu
- Guangzhou National Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China; Guangzhou Medical University, Panyu District, Guangzhou, Guangdong Province 511495, China
| | - Jiahui Huang
- Guangzhou National Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China
| | - Wei Guan
- Guangzhou National Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China
| | - Lawrence E Bates
- Wellcome - MRC Cambridge Stem Cell Institute, Jeffrey Cheah Biomedical Centre, Cambridge Biomedical Campus, University of Cambridge, Puddicombe Way, Cambridge CB2 0AW, UK
| | - Hannah T Stuart
- Wellcome - MRC Cambridge Stem Cell Institute, Jeffrey Cheah Biomedical Centre, Cambridge Biomedical Campus, University of Cambridge, Puddicombe Way, Cambridge CB2 0AW, UK
| | - Mingyue Guo
- Bioland Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China; Guangzhou Medical University, Panyu District, Guangzhou, Guangdong Province 511495, China
| | - Pengfei Zhang
- Bioland Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China
| | - Boyan Huang
- Guangzhou National Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China; Bioland Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China
| | - Chuanxin Chen
- Guangzhou National Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China; Bioland Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China
| | - Man Zhang
- Guangzhou National Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China; Bioland Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China
| | - Jiekai Chen
- Bioland Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China; CAS Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Mingwei Min
- Guangzhou National Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China; Bioland Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China
| | - Guangming Wu
- Guangzhou National Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China; Bioland Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China
| | - Andrew P Hutchins
- Shenzhen Key Laboratory of Gene Regulation and Systems Biology, Department of Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong Province 518055, China
| | - José C R Silva
- Guangzhou National Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China; Bioland Laboratory, Guangzhou International Bio Island, Guangzhou, Guangdong Province 510005, China.
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Hu Q, Bian Q, Rong D, Wang L, Song J, Huang HS, Zeng J, Mei J, Wang PY. JAK/STAT pathway: Extracellular signals, diseases, immunity, and therapeutic regimens. Front Bioeng Biotechnol 2023; 11:1110765. [PMID: 36911202 PMCID: PMC9995824 DOI: 10.3389/fbioe.2023.1110765] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 02/13/2023] [Indexed: 02/25/2023] Open
Abstract
Janus kinase/signal transduction and transcription activation (JAK/STAT) pathways were originally thought to be intracellular signaling pathways that mediate cytokine signals in mammals. Existing studies show that the JAK/STAT pathway regulates the downstream signaling of numerous membrane proteins such as such as G-protein-associated receptors, integrins and so on. Mounting evidence shows that the JAK/STAT pathways play an important role in human disease pathology and pharmacological mechanism. The JAK/STAT pathways are related to aspects of all aspects of the immune system function, such as fighting infection, maintaining immune tolerance, strengthening barrier function, and cancer prevention, which are all important factors involved in immune response. In addition, the JAK/STAT pathways play an important role in extracellular mechanistic signaling and might be an important mediator of mechanistic signals that influence disease progression, immune environment. Therefore, it is important to understand the mechanism of the JAK/STAT pathways, which provides ideas for us to design more drugs targeting diseases based on the JAK/STAT pathway. In this review, we discuss the role of the JAK/STAT pathway in mechanistic signaling, disease progression, immune environment, and therapeutic targets.
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Affiliation(s)
- Qian Hu
- Department of Pharmacy, School of Medicine, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.,Oujiang Laboratory, Key Laboratory of Alzheimer's Disease of Zhejiang Province, Institute of Aging, Wenzhou Medical University, Wenzhou, China.,Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, China
| | - Qihui Bian
- Oujiang Laboratory, Key Laboratory of Alzheimer's Disease of Zhejiang Province, Institute of Aging, Wenzhou Medical University, Wenzhou, China
| | - Dingchao Rong
- Department of Orthopaedic Surgery, The Third Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Leiyun Wang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, China.,Department of Pharmacy, Wuhan First Hospital, Wuhan, China
| | - Jianan Song
- Oujiang Laboratory, Key Laboratory of Alzheimer's Disease of Zhejiang Province, Institute of Aging, Wenzhou Medical University, Wenzhou, China
| | - Hsuan-Shun Huang
- Department of Research, Center for Prevention and Therapy of Gynecological Cancers, Buddhist Tzu Chi General Hospital, Hualien, Taiwan
| | - Jun Zeng
- Department of Thoracic Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Jie Mei
- Oujiang Laboratory, Key Laboratory of Alzheimer's Disease of Zhejiang Province, Institute of Aging, Wenzhou Medical University, Wenzhou, China.,Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, China
| | - Peng-Yuan Wang
- Oujiang Laboratory, Key Laboratory of Alzheimer's Disease of Zhejiang Province, Institute of Aging, Wenzhou Medical University, Wenzhou, China
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Yan P, Lin C, He M, Zhang Z, Zhao Q, Li E. Immune regulation mediated by JAK/STAT signaling pathway in hemocytes of Pacific white shrimps, Litopenaeus vannamei stimulated by lipopolysaccharide. FISH & SHELLFISH IMMUNOLOGY 2022; 130:141-154. [PMID: 35932985 DOI: 10.1016/j.fsi.2022.07.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 07/12/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
To understand the regulatory mechanism of Janus kinase/Signal Transducers and Activators of Transcription (JAK/STAT) signaling pathway on the immune system of the Pacific white shrimp, Litopenaeus vannamei, RNA interference technique was used to investigate the effects of JAK/STAT signaling pathway on the immune response of hemocyte in Litopenaeus vannamei stimulated by lipopolysaccharide (LPS). The results showed that 1) after 6 h of LPS stimulation, the expression levels of immune genes in hemocyte were significantly up-regulated (P < 0.05), the immune defense ability (hemocyte number, phagocytosis rate, hemagglutination activity, bacteriolytic activity, antibacterial activity, prophenoloxidase system activity) and the hemocyte antioxidant ability were significantly higher than the control group, especially at 12 h. 2) After 48 h of STAT gene interference, the expression levels of immune genes in hemocytes were significantly down-regulated, and the immune defense ability (hemocyte count, phagocytosis rate, plasma agglutination activity, lysozyme activity, antibacterial activity, proPO system activity) and the antioxidant ability were reduced and significantly lower than control. Concurrently, after LPS stimulation, the immune indexes were significantly up-regulated at 12 h to the maximum but was still lower the undisturbed LPS group. These results indicate that JAK/STAT signaling pathway is involved in the immune regulation mechanism of L. vannamei against LPS stimulation through positive regulation of cellular immune and humoral immune. These results provide a basis for further research on the role and status of JAK/STAT signaling pathway in the immune defense of crustaceans.
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Affiliation(s)
- Peiyu Yan
- Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan Aquaculture Breeding Engineering Research Center, College of Marine Sciences, Hainan University, Haikou, Hainan, 570228, China
| | - Cheng Lin
- Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan Aquaculture Breeding Engineering Research Center, College of Marine Sciences, Hainan University, Haikou, Hainan, 570228, China
| | - Meng He
- Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan Aquaculture Breeding Engineering Research Center, College of Marine Sciences, Hainan University, Haikou, Hainan, 570228, China
| | - Zhuofan Zhang
- Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan Aquaculture Breeding Engineering Research Center, College of Marine Sciences, Hainan University, Haikou, Hainan, 570228, China
| | - Qun Zhao
- Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan Aquaculture Breeding Engineering Research Center, College of Marine Sciences, Hainan University, Haikou, Hainan, 570228, China.
| | - Erchao Li
- Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan Aquaculture Breeding Engineering Research Center, College of Marine Sciences, Hainan University, Haikou, Hainan, 570228, China.
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Apriamashvili G, Vredevoogd DW, Krijgsman O, Bleijerveld OB, Ligtenberg MA, de Bruijn B, Boshuizen J, Traets JJH, D'Empaire Altimari D, van Vliet A, Lin CP, Visser NL, Londino JD, Sanchez-Hodge R, Oswalt LE, Altinok S, Schisler JC, Altelaar M, Peeper DS. Ubiquitin ligase STUB1 destabilizes IFNγ-receptor complex to suppress tumor IFNγ signaling. Nat Commun 2022; 13:1923. [PMID: 35395848 PMCID: PMC8993893 DOI: 10.1038/s41467-022-29442-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 03/11/2022] [Indexed: 12/30/2022] Open
Abstract
The cytokine IFNγ differentially impacts on tumors upon immune checkpoint blockade (ICB). Despite our understanding of downstream signaling events, less is known about regulation of its receptor (IFNγ-R1). With an unbiased genome-wide CRISPR/Cas9 screen for critical regulators of IFNγ-R1 cell surface abundance, we identify STUB1 as an E3 ubiquitin ligase for IFNγ-R1 in complex with its signal-relaying kinase JAK1. STUB1 mediates ubiquitination-dependent proteasomal degradation of IFNγ-R1/JAK1 complex through IFNγ-R1K285 and JAK1K249. Conversely, STUB1 inactivation amplifies IFNγ signaling, sensitizing tumor cells to cytotoxic T cells in vitro. This is corroborated by an anticorrelation between STUB1 expression and IFNγ response in ICB-treated patients. Consistent with the context-dependent effects of IFNγ in vivo, anti-PD-1 response is increased in heterogenous tumors comprising both wildtype and STUB1-deficient cells, but not full STUB1 knockout tumors. These results uncover STUB1 as a critical regulator of IFNγ-R1, and highlight the context-dependency of STUB1-regulated IFNγ signaling for ICB outcome.
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Affiliation(s)
- Georgi Apriamashvili
- Division of Molecular Oncology and Immunology, Oncode Institute, The Netherlands Cancer Institute, Plesmanlaan 121, 1066, CX, Amsterdam, The Netherlands
| | - David W Vredevoogd
- Division of Molecular Oncology and Immunology, Oncode Institute, The Netherlands Cancer Institute, Plesmanlaan 121, 1066, CX, Amsterdam, The Netherlands
| | - Oscar Krijgsman
- Division of Molecular Oncology and Immunology, Oncode Institute, The Netherlands Cancer Institute, Plesmanlaan 121, 1066, CX, Amsterdam, The Netherlands
| | - Onno B Bleijerveld
- Proteomics Core Facility, The Netherlands Cancer Institute, Plesmanlaan 121, 1066, CX, Amsterdam, The Netherlands
| | - Maarten A Ligtenberg
- Division of Molecular Oncology and Immunology, Oncode Institute, The Netherlands Cancer Institute, Plesmanlaan 121, 1066, CX, Amsterdam, The Netherlands
| | - Beaunelle de Bruijn
- Division of Molecular Oncology and Immunology, Oncode Institute, The Netherlands Cancer Institute, Plesmanlaan 121, 1066, CX, Amsterdam, The Netherlands
| | - Julia Boshuizen
- Division of Molecular Oncology and Immunology, Oncode Institute, The Netherlands Cancer Institute, Plesmanlaan 121, 1066, CX, Amsterdam, The Netherlands
| | - Joleen J H Traets
- Division of Molecular Oncology and Immunology, Oncode Institute, The Netherlands Cancer Institute, Plesmanlaan 121, 1066, CX, Amsterdam, The Netherlands
| | - Daniela D'Empaire Altimari
- Division of Molecular Oncology and Immunology, Oncode Institute, The Netherlands Cancer Institute, Plesmanlaan 121, 1066, CX, Amsterdam, The Netherlands
| | - Alex van Vliet
- Division of Molecular Oncology and Immunology, Oncode Institute, The Netherlands Cancer Institute, Plesmanlaan 121, 1066, CX, Amsterdam, The Netherlands
| | - Chun-Pu Lin
- Division of Molecular Oncology and Immunology, Oncode Institute, The Netherlands Cancer Institute, Plesmanlaan 121, 1066, CX, Amsterdam, The Netherlands
| | - Nils L Visser
- Division of Molecular Oncology and Immunology, Oncode Institute, The Netherlands Cancer Institute, Plesmanlaan 121, 1066, CX, Amsterdam, The Netherlands
| | - James D Londino
- Division of Pulmonary, Critical Care and Sleep Medicine, The Ohio State University Wexner Medical Center, 410 W 10th Avenue, Columbus, OH, USA
| | - Rebekah Sanchez-Hodge
- McAllister Heart Institute and Department of Pharmacology, The University of North Carolina at Chapel Hill, 111 Mason Farm Rd., 3340 C MBRB CB #7126, Chapel Hill, NC, USA
| | - Leah E Oswalt
- McAllister Heart Institute and Department of Pharmacology, The University of North Carolina at Chapel Hill, 111 Mason Farm Rd., 3340 C MBRB CB #7126, Chapel Hill, NC, USA
| | - Selin Altinok
- McAllister Heart Institute and Department of Pharmacology, The University of North Carolina at Chapel Hill, 111 Mason Farm Rd., 3340 C MBRB CB #7126, Chapel Hill, NC, USA
| | - Jonathan C Schisler
- McAllister Heart Institute and Department of Pharmacology, The University of North Carolina at Chapel Hill, 111 Mason Farm Rd., 3340 C MBRB CB #7126, Chapel Hill, NC, USA
| | - Maarten Altelaar
- Proteomics Core Facility, The Netherlands Cancer Institute, Plesmanlaan 121, 1066, CX, Amsterdam, The Netherlands
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, and Netherlands Proteomics Center, Padualaan 8, 3584, CH, Utrecht, The Netherlands
| | - Daniel S Peeper
- Division of Molecular Oncology and Immunology, Oncode Institute, The Netherlands Cancer Institute, Plesmanlaan 121, 1066, CX, Amsterdam, The Netherlands.
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5
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Wang Y, Han Y, Wang L, Zou M, Sun Y, Sun H, Guo Q, Peng X. Mycoplasma gallisepticum escapes the host immune response via gga-miR-365-3p/SOCS5/STATs axis. Vet Res 2022; 53:103. [PMID: 36471418 PMCID: PMC9721073 DOI: 10.1186/s13567-022-01117-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 08/16/2022] [Indexed: 12/09/2022] Open
Abstract
A disruption in the expression of gga-miR-365-3p was confirmed in the Mycoplasma gallisepticum (MG)-infected Chicken primary alveolar type II epithelial (CP-II) cells based on previous sequencing results, but the role it plays in the infection was unclear. In the present study, we demonstrate that MG evaded cellular host immunity via a gga-miR-365-3p/SOCS5-JAK/STATs negative feedback loop. Specifically, we found that at the initial stage of MG infection in cells, gga-miR-365-3p was rapidly increased and activated the JAK/STAT signaling pathway by inhibiting SOCS5, which induced the secretion of inflammatory factors and triggered immune response against MG infection. Over time, though, the infection progressed, MG gradually destroyed the immune defences of CP-II cells. In late stages of infection, MG escaped host immunity by reducing intracellular gga-miR-365-3p and inhibiting the JAK/STAT pathway to suppress the secretion of inflammatory factors and promote MG adhesion or invasion. These results revealed the game between MG and host cell interactions, providing a new perspective to gain insight into the pathogenic mechanisms of MG or other pathogens. Meanwhile, they also contributed to novel thoughts on the prevention and control of MG and other pathogenic infections, shedding light on the immune modulating response triggered by pathogen invasion and their molecular targeting.
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Affiliation(s)
- Yingjie Wang
- grid.35155.370000 0004 1790 4137Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Hubei 430070 Wuhan, China
| | - Yun Han
- grid.35155.370000 0004 1790 4137Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Hubei 430070 Wuhan, China
| | - Lulu Wang
- grid.35155.370000 0004 1790 4137Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Hubei 430070 Wuhan, China
| | - Mengyun Zou
- grid.35155.370000 0004 1790 4137Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Hubei 430070 Wuhan, China
| | - Yingfei Sun
- grid.35155.370000 0004 1790 4137Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Hubei 430070 Wuhan, China
| | - Huanling Sun
- grid.35155.370000 0004 1790 4137Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Hubei 430070 Wuhan, China
| | - Qiao Guo
- grid.35155.370000 0004 1790 4137Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Hubei 430070 Wuhan, China
| | - Xiuli Peng
- grid.35155.370000 0004 1790 4137Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Hubei 430070 Wuhan, China
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Dai L, Li Z, Tao Y, Liang W, Hu W, Zhou S, Fu X, Wang X. Emerging roles of suppressor of cytokine signaling 3 in human cancers. Biomed Pharmacother 2021; 144:112262. [PMID: 34607102 DOI: 10.1016/j.biopha.2021.112262] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/22/2021] [Accepted: 09/26/2021] [Indexed: 02/07/2023] Open
Abstract
As a member of the suppressor of cytokine signaling (SOCS) family, SOCS3 is a cytokine-inducible protein that inhibits cytokine signaling in a variety of signaling pathways. Increasing evidence shows that SOCS3 regulates tumor development through multiple pathological and physiological processes. It is worth mentioning that SOCS3 negatively regulates JAK/STAT signaling by binding to JAK/cytokine receptors or phosphorylation docking sites on STAT receptors, thus preventing tumor cell proliferation and inhibiting tumor cell invasion and metastasis. The kinase inhibitory region KIR of SOCS3 is the key to JAK inhibition. In addition, SOCS3 may also regulate tumor progression through other molecules or signaling pathways, such as microRNAs (miRNAs), IL-6 and NF-κB signaling pathway. MicroRNAs inhibit SOCS3 expression by binding to the 3' untranslated region of SOCS3 mRNA, thus regulating tumor development processes, including tumor cell proliferation, invasion, metastasis, differentiation, cell cycle and apoptosis, as well as tumor metastasis and chemotherapy resistance. On the whole, SOCS3 acts as an inhibitor of the majority of tumors through various pathways. In the present review, the role of SOCS3 in multitudinous tumors was comprehensively summarized, the molecular mechanisms and modes of action of SOCS3 in tumors were discussed, and the association between SOCS3 expression and the clinical characteristics of patients with cancer were emphasized.
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Affiliation(s)
- Lirui Dai
- Department of Neurosurgery, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou 450052, China; Henan International Joint Laboratory of Glioma Metabolism and Microenvironment Research, Zhengzhou, Henan, China
| | - Zian Li
- Department of Neurosurgery, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou 450052, China; Henan International Joint Laboratory of Glioma Metabolism and Microenvironment Research, Zhengzhou, Henan, China
| | - Yiran Tao
- Department of Neurosurgery, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou 450052, China; Henan International Joint Laboratory of Glioma Metabolism and Microenvironment Research, Zhengzhou, Henan, China
| | - Wulong Liang
- Henan International Joint Laboratory of Glioma Metabolism and Microenvironment Research, Zhengzhou, Henan, China
| | - Weihua Hu
- Henan International Joint Laboratory of Glioma Metabolism and Microenvironment Research, Zhengzhou, Henan, China
| | - Shaolong Zhou
- Department of Neurosurgery, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou 450052, China; Henan International Joint Laboratory of Glioma Metabolism and Microenvironment Research, Zhengzhou, Henan, China
| | - Xudong Fu
- Department of Neurosurgery, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou 450052, China; Henan International Joint Laboratory of Glioma Metabolism and Microenvironment Research, Zhengzhou, Henan, China
| | - Xinjun Wang
- Department of Neurosurgery, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou 450052, China; Henan International Joint Laboratory of Glioma Metabolism and Microenvironment Research, Zhengzhou, Henan, China.
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Regulation of low-density lipoprotein receptor expression in triple negative breast cancer by EGFR-MAPK signaling. Sci Rep 2021; 11:17927. [PMID: 34504181 PMCID: PMC8429745 DOI: 10.1038/s41598-021-97327-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 08/24/2021] [Indexed: 11/15/2022] Open
Abstract
Expression of the low-density lipoprotein receptor (LDLR) has been shown to play a critical role in hypercholesterolemia-associated breast cancer growth and is associated with shorter recurrence-free survival in human breast cancer studies. We sought to identify how circulating LDL cholesterol and tumor LDLR might accelerate oncogenic processes by determining whether increased LDLR expression and cholesterol uptake are associated with the activation of the epidermal growth factor receptor (EGFR) signaling pathway in triple negative breast cancer (TNBC) cell lines. EGF stimulation of MDA-MB-468 (MDA468) cells activated p44/42MAPK (MAPK), increased expression of LDLR, and fluorescent LDL cholesterol uptake. However, stimulation of MDA-MB-231 (MDA231) cells with EGF did not lead to increased expression of LDLR despite inducing phosphorylation of EGFR. Inhibition of MAPK using UO126 in MDA231 cells reduced LDLR expression, and in MDA468 cells, UO126 impaired the LDLR increase in response to EGF. MDA468 cells exposed to the transcription inhibitor, Actinomycin, prior to treatment with EGF showed reduced degradation of LDLR mRNA compared to vehicle-treated cells. Our results suggest that the EGF-associated increase in LDLR protein expression is cell line-specific. The common pathway regulating LDLR expression was MAPK in both TNBC cell lines.
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8
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Luong N, Lenz JA, Modiano JF, Olson JK. Extracellular Vesicles Secreted by Tumor Cells Promote the Generation of Suppressive Monocytes. Immunohorizons 2021; 5:647-658. [PMID: 34404719 DOI: 10.4049/immunohorizons.2000017] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 07/14/2021] [Indexed: 11/19/2022] Open
Abstract
Monocytes are among the first cells to infiltrate the tumor microenvironment. The conversion of monocytes to suppressor cells in the tumor microenvironment is crucial in evasion of the immune response and tumor maintenance. Tumor cells may secrete products that promote the conversion of monocytes to suppressor cells. Cells secrete extracellular vesicles (EVs) containing cargos of genetic materials and proteins as a way to communicate with neighboring cells. During pathologic conditions like cancers, tumor cells increase their EVs production containing microRNA, RNA, and proteins that may affect the immune cell response, contributing to the immunosuppressive microenvironment. Our studies show that EVs secreted by a wide range of murine tumor cells, including osteosarcoma, glioma, colon carcinoma, sarcoma, and melanoma, can be taken up by bone marrow-derived monocytes. The monocytes that took up the EVs secreted by tumor cells matured toward an immune-suppressive phenotype by upregulating the expression of suppressive cytokines and effector molecules. The monocytes also downregulated MHC class II and costimulatory molecules while increasing the expression of PD-L1 on their surface after taking up EVs from tumor cells. Most importantly, monocytes exposed to EVs secreted by tumor cells suppressed activated Ag-specific CD4+ T cells. These results show that tumor cells from several different tumor types secrete EVs which promote the conversion of monocytes into suppressor cells, thus promoting immune evasion. These studies suggest that EVs secreted by tumors are potentially a new target for future cancer therapy.
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Affiliation(s)
- Nhungoc Luong
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN
| | - Jennifer A Lenz
- Animal Cancer Care and Research Program, University of Minnesota, St. Paul, MN
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN
| | - Jaime F Modiano
- Animal Cancer Care and Research Program, University of Minnesota, St. Paul, MN
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN; and
| | - Julie K Olson
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN;
- Department of Diagnostic and Biological Sciences, School of Dentistry, University of Minnesota, Minneapolis, MN
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9
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Cortes JR, Patrone CC, Quinn SA, Gu Y, Sanchez-Martin M, Mackey A, Cooke AJ, Shih BB, Laurent AP, Trager MH, Ferrando AA, Geskin LJ, Palomero T. Jak-STAT Inhibition Mediates Romidepsin and Mechlorethamine Synergism in Cutaneous T-Cell Lymphoma. J Invest Dermatol 2021; 141:2908-2920.e7. [PMID: 34089720 DOI: 10.1016/j.jid.2021.04.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 03/08/2021] [Accepted: 04/12/2021] [Indexed: 11/28/2022]
Abstract
Sézary syndrome is an aggressive and disseminated form of cutaneous T-cell lymphoma associated with dismal prognosis in which the histone deacetylase inhibitor romidepsin has shown remarkable activity as a single agent. However, clinical responses to romidepsin are typically transient, highlighting the need for more effective therapies. In this study, we show synergistic antilymphoma effects of romidepsin in combination with mechlorethamine, an alkylating agent, in cutaneous T-cell lymphoma cell lines and primary samples with strong antitumor effects in an in vivo model of Sézary syndrome. Mechanistically, gene expression profiling points to abrogation of Jak/signal transducer and activator of transcription (STAT) signaling as an important mediator of this interaction. Consistently, the combination of mechlorethamine plus romidepsin resulted in downregulation of STAT5 phosphorylation in romidepsin-sensitive cell lines and primary Sézary syndrome samples, but not in romidepsin-resistant tumors. Moreover, in further support of Jak/STAT signaling as a modulator of romidepsin activity in cutaneous T-cell lymphoma, treatment with romidepsin in combination with Jak inhibitors resulted in markedly increased therapeutic responses. Overall, these results support a role for romidepsin plus mechlorethamine in combination in the treatment of cutaneous T-cell lymphoma and uncover a previously unrecognized role for Jak/STAT signaling in the response to romidepsin and romidepsin-based combination therapies in Sézary syndrome.
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Affiliation(s)
- Jose R Cortes
- Institute for Cancer Genetics, Columbia University Irving Medical Center, New York, New York, USA
| | - Christina C Patrone
- Department of Dermatology, Columbia University Irving Medical Center, New York, New York, USA
| | - Stuart Aidan Quinn
- Institute for Cancer Genetics, Columbia University Irving Medical Center, New York, New York, USA
| | - Yuhan Gu
- Department of Dermatology, Columbia University Irving Medical Center, New York, New York, USA
| | - Marta Sanchez-Martin
- Institute for Cancer Genetics, Columbia University Irving Medical Center, New York, New York, USA
| | - Adam Mackey
- Institute for Cancer Genetics, Columbia University Irving Medical Center, New York, New York, USA
| | - Anisha J Cooke
- Institute for Cancer Genetics, Columbia University Irving Medical Center, New York, New York, USA
| | - Bobby B Shih
- Institute for Cancer Genetics, Columbia University Irving Medical Center, New York, New York, USA
| | - Anouchka P Laurent
- Institute for Cancer Genetics, Columbia University Irving Medical Center, New York, New York, USA
| | - Megan H Trager
- Department of Dermatology, Columbia University Irving Medical Center, New York, New York, USA
| | - Adolfo A Ferrando
- Institute for Cancer Genetics, Columbia University Irving Medical Center, New York, New York, USA; Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, New York, USA; Department of Pediatrics, Columbia University Irving Medical Center, New York, New York, USA
| | - Larisa J Geskin
- Department of Dermatology, Columbia University Irving Medical Center, New York, New York, USA
| | - Teresa Palomero
- Institute for Cancer Genetics, Columbia University Irving Medical Center, New York, New York, USA; Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, New York, USA.
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10
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Influenza a virus antagonizes type I and type II interferon responses via SOCS1-dependent ubiquitination and degradation of JAK1. Virol J 2020; 17:74. [PMID: 32532301 PMCID: PMC7291424 DOI: 10.1186/s12985-020-01348-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 06/02/2020] [Indexed: 12/16/2022] Open
Abstract
Background Although influenza A virus (IAV) employs diverse strategies to evade IFN responses by inhibiting the synthesis of IFN, how IAV regulates signaling downstream of IFN is incompletely understood. Methods In this study, we used Western blot-based protein analysis coupled with RT-qPCR, overexpression and RNA interference to investigate the regulation of JAK1 by IAV infection. Results The results indicated that JAK1 was ubiquitinated and degraded, resulting in inhibition of type I and type II IFN responses, demonstrating that IAV antagonizes the IFN-activated JAK/STAT signaling pathway by inducing the degradation of JAK1. Furthermore. IAV infection upregulated the suppressor of cytokine signaling (SOCS) protein SOCS1, and SOCS1 mediated the ubiquitination and degradation of JAK1. Conclusion Collectively, our findings suggest that IAV infection induces SOCS1 expression to promote JAK1 degradation, which in turn inhibits host innate immune responses.
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11
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Zhao Y, Xiong X, Sun Y. Cullin-RING Ligase 5: Functional characterization and its role in human cancers. Semin Cancer Biol 2020; 67:61-79. [PMID: 32334051 DOI: 10.1016/j.semcancer.2020.04.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/06/2020] [Accepted: 04/12/2020] [Indexed: 12/12/2022]
Abstract
Cullin-RING ligase 5 (CRL5) is a multi-protein complex and consists of a scaffold protien cullin 5, a RING protein RBX2 (also known as ROC2 or SAG), adaptor proteins Elongin B/C, and a substrate receptor protein SOCS. Through targeting a variety of substrates for proteasomal degradation or modulating various protein-protein interactions, CRL5 is involved in regulation of many biological processes, such as cytokine signal transduction, inflammation, viral infection, and oncogenesis. As many substrates of CRL5 are well-known oncoproteins or tumor suppressors, abnormal regulation of CRL5 is commonly found in human cancers. In this review, we first briefly introduce each of CRL5 components, and then discuss the biological processes regulated by four members of SOCS-box-containing substrate receptor family through substrate degradation. We next describe how CRL5 is hijacked by a variety of viral proteins to degrade host anti-viral proteins, which facilitates virus infection. We further discuss the regulation of CUL5 and its various roles in human cancers, acting as either a tumor suppressor or an oncoprotein in a context-dependent manner. Finally, we propose novel insights for future perspectives on the validation of cullin5 and other CRL5 components as potential targets, and possible targeting strategies to discover CRL5 inhibitors for anti-cancer and anti-virus therapies.
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Affiliation(s)
- Yongchao Zhao
- Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, China.
| | - Xiufang Xiong
- Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, China; Cancer Institute of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yi Sun
- Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, China; Cancer Institute of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Division of Radiation and Cancer Biology, Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA.
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12
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Xin P, Xu X, Deng C, Liu S, Wang Y, Zhou X, Ma H, Wei D, Sun S. The role of JAK/STAT signaling pathway and its inhibitors in diseases. Int Immunopharmacol 2020; 80:106210. [PMID: 31972425 DOI: 10.1016/j.intimp.2020.106210] [Citation(s) in RCA: 400] [Impact Index Per Article: 100.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 12/19/2019] [Accepted: 01/08/2020] [Indexed: 02/09/2023]
Abstract
The JAK/STAT signaling pathway is an universally expressed intracellular signal transduction pathway and involved in many crucial biological processes, including cell proliferation, differentiation, apoptosis, and immune regulation. It provides a direct mechanism for extracellular factors-regulated gene expression. Current researches on this pathway have been focusing on the inflammatory and neoplastic diseases and related drug. The mechanism of JAK/STAT signaling is relatively simple. However, the biological consequences of the pathway are complicated due to its crosstalk with other signaling pathways. In addition, there is increasing evidence indicates that the persistent activation of JAK/STAT signaling pathway is closely related to many immune and inflammatory diseases, yet the specific mechanism remains unclear. Therefore, it is necessary to study the detailed mechanisms of JAK/STAT signaling in disease formation to provide critical reference for clinical treatments of the diseases. In this review, we focus on the structure of JAKs and STATs, the JAK/STAT signaling pathway and its negative regulators, the associated diseases, and the JAK inhibitors for the clinical therapy.
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Affiliation(s)
- Ping Xin
- College of Pharmacy, Harbin Medical University-Daqing, Daqing 163319, China
| | - Xiaoyun Xu
- College of Pharmacy, Harbin Medical University-Daqing, Daqing 163319, China
| | - Chengjie Deng
- College of Pharmacy, Harbin Medical University-Daqing, Daqing 163319, China
| | - Shuang Liu
- College of Pharmacy, Harbin Medical University-Daqing, Daqing 163319, China
| | - Youzhi Wang
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Xuegang Zhou
- College of Pharmacy, Harbin Medical University-Daqing, Daqing 163319, China
| | - Hongxing Ma
- Clinical Laboratory Department, Najing Lishui People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Najing 211200, China
| | - Donghua Wei
- College of Pharmacy, Harbin Medical University-Daqing, Daqing 163319, China
| | - Shiqin Sun
- College of Pharmacy, Harbin Medical University-Daqing, Daqing 163319, China.
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13
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Zhou B, Liu HY, Zhu BL. Protective Role of SOCS3 Modified Bone Marrow Mesenchymal Stem Cells in Hypoxia-Induced Injury of PC12 Cells. J Mol Neurosci 2019; 67:400-410. [DOI: 10.1007/s12031-018-1243-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 12/11/2018] [Indexed: 01/01/2023]
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14
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Michlits G, Hubmann M, Wu SH, Vainorius G, Budusan E, Zhuk S, Burkard TR, Novatchkova M, Aichinger M, Lu Y, Reece-Hoyes J, Nitsch R, Schramek D, Hoepfner D, Elling U. CRISPR-UMI: single-cell lineage tracing of pooled CRISPR-Cas9 screens. Nat Methods 2017; 14:1191-1197. [PMID: 29039415 DOI: 10.1038/nmeth.4466] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 09/11/2017] [Indexed: 12/12/2022]
Abstract
Pooled CRISPR screens are a powerful tool for assessments of gene function. However, conventional analysis is based exclusively on the relative abundance of integrated single guide RNAs (sgRNAs) between populations, which does not discern distinct phenotypes and editing outcomes generated by identical sgRNAs. Here we present CRISPR-UMI, a single-cell lineage-tracing methodology for pooled screening to account for cell heterogeneity. We generated complex sgRNA libraries with unique molecular identifiers (UMIs) that allowed for screening of clonally expanded, individually tagged cells. A proof-of-principle CRISPR-UMI negative-selection screen provided increased sensitivity and robustness compared with conventional analysis by accounting for underlying cellular and editing-outcome heterogeneity and detection of outlier clones. Furthermore, a CRISPR-UMI positive-selection screen uncovered new roadblocks in reprogramming mouse embryonic fibroblasts as pluripotent stem cells, distinguishing reprogramming frequency and speed (i.e., effect size and probability). CRISPR-UMI boosts the predictive power, sensitivity, and information content of pooled CRISPR screens.
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Affiliation(s)
- Georg Michlits
- Institute of Molecular Biotechnology of the Austrian Academy of Science (IMBA), Vienna Biocenter (VBC), Vienna, Austria
| | - Maria Hubmann
- Institute of Molecular Biotechnology of the Austrian Academy of Science (IMBA), Vienna Biocenter (VBC), Vienna, Austria
| | - Szu-Hsien Wu
- Institute of Molecular Biotechnology of the Austrian Academy of Science (IMBA), Vienna Biocenter (VBC), Vienna, Austria
| | - Gintautas Vainorius
- Institute of Molecular Biotechnology of the Austrian Academy of Science (IMBA), Vienna Biocenter (VBC), Vienna, Austria
| | - Elena Budusan
- Institute of Molecular Biotechnology of the Austrian Academy of Science (IMBA), Vienna Biocenter (VBC), Vienna, Austria
| | - Sergei Zhuk
- Institute of Molecular Biotechnology of the Austrian Academy of Science (IMBA), Vienna Biocenter (VBC), Vienna, Austria
| | - Thomas R Burkard
- Institute of Molecular Biotechnology of the Austrian Academy of Science (IMBA), Vienna Biocenter (VBC), Vienna, Austria
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC),Vienna, Austria
| | - Maria Novatchkova
- Institute of Molecular Biotechnology of the Austrian Academy of Science (IMBA), Vienna Biocenter (VBC), Vienna, Austria
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC),Vienna, Austria
| | - Martin Aichinger
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC),Vienna, Austria
| | - Yiqing Lu
- Center for Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - John Reece-Hoyes
- Novartis Institutes for BioMedical Research, Cambridge, Massachusetts, USA
| | - Roberto Nitsch
- Discovery Sciences RAD, AstraZeneca R&D, Gothenburg, Sweden
| | - Daniel Schramek
- Center for Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | | | - Ulrich Elling
- Institute of Molecular Biotechnology of the Austrian Academy of Science (IMBA), Vienna Biocenter (VBC), Vienna, Austria
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15
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Cianciulli A, Calvello R, Porro C, Trotta T, Panaro MA. Understanding the role of SOCS signaling in neurodegenerative diseases: Current and emerging concepts. Cytokine Growth Factor Rev 2017; 37:67-79. [DOI: 10.1016/j.cytogfr.2017.07.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 07/28/2017] [Accepted: 07/29/2017] [Indexed: 12/15/2022]
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16
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Swiderski K, Thakur SS, Naim T, Trieu J, Chee A, Stapleton DI, Koopman R, Lynch GS. Muscle-specific deletion of SOCS3 increases the early inflammatory response but does not affect regeneration after myotoxic injury. Skelet Muscle 2016; 6:36. [PMID: 27800152 PMCID: PMC5078888 DOI: 10.1186/s13395-016-0108-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 10/05/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Muscles of old animals are injured more easily and regenerate poorly, attributed in part to increased levels of circulating pro-inflammatory cytokines. The Janus kinase/signal transducers and activators of transcription (JAK/STAT) signaling cascade is a key mediator of inflammatory cytokine action, and signaling via this pathway is increased in muscles with aging. As a negative regulator of JAK/STAT signaling, a key mediator of myogenic proliferation and differentiation, altered expression of suppressor of cytokine signaling (SOCS3) is likely to have important consequences for muscle regeneration. To model this scenario, we investigated the effect of SOCS3 deletion within mature muscle fibers on injury and repair. We tested the hypothesis that reduced SOCS3 function would alter the inflammatory response and impair muscle regeneration after myotoxic injury. METHODS Mice with a specific deletion of SOCS3 within mature skeletal muscle fibers were used to assess the effect of SOCS3 deletion on muscle injury and repair. Twelve-week-old or 24-month-old SOCS3 muscle-specific knockout (SOCS3 MKO) mice and littermate controls were either left uninjured or injured with a single injection of notexin (10 μg/ml) into the right tibialis anterior (TA) muscle. At 1, 2, 3, 5, 7, or 14 days post-injury, the right TA muscle was excised and subjected to histological, western immunoblotting, and gene expression analyses. Force production and fatigue were assessed in uninjured muscles and at 7 days post-notexin injury. RESULTS In uninjured muscles, SOCS3 deletion decreased force production during fatigue but had no effect on the gross or histological appearance of the TA muscles. After notexin injury, deletion of SOCS3 increased STAT3 phosphorylation at day 1 and increased the mRNA expression of the inflammatory cytokine TNF-α, and the inflammatory cell markers F4/80 and CD68 at day 2. Gene expression analysis of the regeneration markers Pax7, MyoD, and Myogenin indicated SOCS3 deletion had no effect on the progression of muscle repair after notexin injury. Inflammation and regeneration were also unchanged in the muscles of 24-month-old SOCS3 MKO mice compared with control. CONCLUSIONS Loss of SOCS3 expression in mature muscle fibers increased the inflammatory response to myotoxic injury but did not impair muscle regeneration in either adult or old mice. Therefore, reduced SOCS3 expression in muscle fibers is unlikely to underlie impaired muscle regeneration. Further investigation into the role of SOCS3 in other cell types involved in muscle repair is warranted.
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Affiliation(s)
- Kristy Swiderski
- Basic and Clinical Myology Laboratory, Department of Physiology, The University of Melbourne, Melbourne, 3010 Australia
| | - Savant S Thakur
- Basic and Clinical Myology Laboratory, Department of Physiology, The University of Melbourne, Melbourne, 3010 Australia
| | - Timur Naim
- Basic and Clinical Myology Laboratory, Department of Physiology, The University of Melbourne, Melbourne, 3010 Australia
| | - Jennifer Trieu
- Basic and Clinical Myology Laboratory, Department of Physiology, The University of Melbourne, Melbourne, 3010 Australia
| | - Annabel Chee
- Basic and Clinical Myology Laboratory, Department of Physiology, The University of Melbourne, Melbourne, 3010 Australia
| | - David I Stapleton
- Basic and Clinical Myology Laboratory, Department of Physiology, The University of Melbourne, Melbourne, 3010 Australia
| | - René Koopman
- Basic and Clinical Myology Laboratory, Department of Physiology, The University of Melbourne, Melbourne, 3010 Australia
| | - Gordon S Lynch
- Basic and Clinical Myology Laboratory, Department of Physiology, The University of Melbourne, Melbourne, 3010 Australia
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17
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Linossi EM, Nicholson SE. Kinase inhibition, competitive binding and proteasomal degradation: resolving the molecular function of the suppressor of cytokine signaling (SOCS) proteins. Immunol Rev 2016; 266:123-33. [PMID: 26085211 DOI: 10.1111/imr.12305] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The suppressor of cytokine signaling (SOCS) family of proteins are key negative regulators of cytokine and growth factor signaling. They act at the receptor complex to modulate the intracellular signaling cascade, preventing excessive signaling and restoring homeostasis. This regulation is critical to the normal cessation of signaling, highlighted by the complex inflammatory phenotypes exhibited by mice deficient in SOCS1 or SOCS3. These two SOCS proteins remain the best characterized of the eight family members (CIS, SOCS1-7), and in particular, we now possess a sound understanding of the mechanism of action for SOCS3. Here, we review the mechanistic role of the SOCS proteins and identify examples where clear, definitive data have been generated and discuss areas where the information is less clear. From this functional viewpoint, we discuss how the SOCS proteins achieve exquisite and specific regulation of cytokine signaling and highlight outstanding questions regarding the function of the less well-studied SOCS family members.
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Affiliation(s)
- Edmond M Linossi
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,The University of Melbourne, Parkville, VIC, Australia
| | - Sandra E Nicholson
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,The University of Melbourne, Parkville, VIC, Australia
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18
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Boontanrart M, Hall SD, Spanier JA, Hayes CE, Olson JK. Vitamin D3 alters microglia immune activation by an IL-10 dependent SOCS3 mechanism. J Neuroimmunol 2016; 292:126-36. [PMID: 26943970 DOI: 10.1016/j.jneuroim.2016.01.015] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 01/21/2016] [Accepted: 01/22/2016] [Indexed: 12/16/2022]
Abstract
Microglia become activated immune cells during infection or disease in the central nervous system (CNS). However, the mechanisms that downregulate activated microglia to prevent immune-mediated damage are not completely understood. Vitamin D3 has been suggested to have immunomodulatory affects, and high levels of vitamin D3 have been correlated with a decreased risk for developing some neurological diseases. Recent studies have demonstrated the synthesis of active vitamin D3, 1,25-dihydroxyvitamin D3, within the CNS, but its cellular source and neuroprotective actions remain unknown. Therefore, we wanted to determine whether microglia can respond to vitamin D3 and whether vitamin D3 alters immune activation of microglia. We have previously shown that microglia become activated by IFNγ or LPS or by infection with virus to express pro-inflammatory cytokines, chemokines, and effector molecules. In this study, activated microglia increased the expression of the vitamin D receptor and Cyp27b1, which encodes the enzyme for converting vitamin D3 into its active form, thereby enhancing their responsiveness to vitamin D3. Most importantly, the activated microglia exposed to vitamin D3 had reduced expression of pro-inflammatory cytokines, IL-6, IL-12, and TNFα, and increased expression of IL-10. The reduction in pro-inflammatory cytokines was dependent on IL-10 induction of suppressor of cytokine signaling-3 (SOCS3). Therefore, vitamin D3 increases the expression of IL-10 creating a feedback loop via SOCS3 that downregulates the pro-inflammatory immune response by activated microglia which would likewise prevent immune mediated damage in the CNS.
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Affiliation(s)
- Mandy Boontanrart
- Department of Neurological Surgery, School of Medicine and Public Health, University of Wisconsin-Madison, United States
| | - Samuel D Hall
- Department of Neurological Surgery, School of Medicine and Public Health, University of Wisconsin-Madison, United States
| | - Justin A Spanier
- Department of Medicine, Center for Immunology, University of Minnesota, United States
| | - Colleen E Hayes
- Department of Biochemistry, University of Wisconsin-Madison, United States
| | - Julie K Olson
- Department of Diagnostic and Biological Sciences, University of Minnesota, United States.
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Shen J, Jia W, Yu Y, Chen J, Cao X, Du Y, Zhang X, Zhu S, Chen W, Xi J, Wei T, Wang G, Yuan D, Duan T, Jiang C, Kang J. Pwp1 is required for the differentiation potential of mouse embryonic stem cells through regulating Stat3 signaling. Stem Cells 2015; 33:661-73. [PMID: 25335925 DOI: 10.1002/stem.1876] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Revised: 08/19/2014] [Accepted: 09/04/2014] [Indexed: 11/08/2022]
Abstract
Leukemia inhibitory factor/Stat3 signaling is critical for maintaining the self-renewal and differentiation potential of mouse embryonic stem cells (mESCs). However, the upstream effectors of this pathway have not been clearly defined. Here, we show that periodic tryptophan protein 1 (Pwp1), a WD-40 repeat-containing protein associated with histone H4 modification, is required for the exit of mESCs from the pluripotent state into all lineages. Knockdown (KD) of Pwp1 does not affect mESC proliferation, self-renewal, or apoptosis. However, KD of Pwp1 impairs the differentiation potential of mESCs both in vitro and in vivo. PWP1 chromatin immunoprecipitation-seq results revealed that the PWP1-occupied regions were marked with significant levels of H4K20me3. Moreover, Pwp1 binds to sites in the upstream region of Stat3. KD of Pwp1 decreases the level of H4K20me3 in the upstream region of Stat3 gene and upregulates the expression of Stat3. Furthermore, Pwp1 KD mESCs recover their differentiation potential through suppressing the expression of Stat3 or inhibiting the tyrosine phosphorylation of STAT3. Together, our results suggest that Pwp1 plays important roles in the differentiation potential of mESCs.
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Affiliation(s)
- Junwei Shen
- Shanghai Key Laboratory of Signaling and Disease Research, Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, School of Life Science and Technology, Tongji University, Shanghai, People's Republic of China
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20
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Abroun S, Saki N, Ahmadvand M, Asghari F, Salari F, Rahim F. STATs: An Old Story, Yet Mesmerizing. CELL JOURNAL 2015; 17:395-411. [PMID: 26464811 PMCID: PMC4601860 DOI: 10.22074/cellj.2015.1] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 08/07/2014] [Indexed: 01/01/2023]
Abstract
Signal transducers and activators of transcription (STATs) are cytoplasmic transcription factors that have a key role in cell fate. STATs, a protein family comprised of
seven members, are proteins which are latent cytoplasmic transcription factors that
convey signals from the cell surface to the nucleus through activation by cytokines
and growth factors. The signaling pathways have diverse biological functions that
include roles in cell differentiation, proliferation, development, apoptosis, and inflammation which place them at the center of a very active area of research. In this review we explain Janus kinase (JAK)/STAT signaling and focus on STAT3, which is
transient from cytoplasm to nucleus after phosphorylation. This procedure controls
fundamental biological processes by regulating nuclear genes controlling cell proliferation, survival, and development. In some hematopoietic disorders and cancers,
overexpression and activation of STAT3 result in high proliferation, suppression of
cell differentiation and inhibition of cell maturation. This article focuses on STAT3
and its role in malignancy, in addition to the role of microRNAs (miRNAs) on STAT3
activation in certain cancers.
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Affiliation(s)
- Saeid Abroun
- Department of Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Najmaldin Saki
- Health Research Institute, Research Center of Thalassemia and Hemoglobinopathy, Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammad Ahmadvand
- Department of Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Farahnaz Asghari
- Department of Medicine II, Division of Gastroenterology, University of Rostock, E.Heydemann-Strasse 6, Rostock, Germany
| | - Fatemeh Salari
- Health Research Institute, Research Center of Thalassemia and Hemoglobinopathy, Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Fakher Rahim
- Health Research Institute, Hearing Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Ohtsuka S, Nakai-Futatsugi Y, Niwa H. LIF signal in mouse embryonic stem cells. JAKSTAT 2015; 4:e1086520. [PMID: 27127728 PMCID: PMC4802755 DOI: 10.1080/21623996.2015.1086520] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 08/18/2015] [Indexed: 12/22/2022] Open
Abstract
Since the establishment of mouse embryonic stem cells (mESCs) in the 1980s, a number of important notions on the self-renewal of pluripotent stem cells in vitro have been found. In serum containing conventional culture, an exogenous cytokine, leukemia inhibitory factor (LIF), is absolutely essential for the maintenance of pluripotency. In contrast, in serum-free culture with simultaneous inhibition of Map-kinase and Gsk3 (so called 2i-culture), LIF is no longer required. However, recent findings also suggest that LIF may have a role not covered by the 2i for the maintenance of naïve pluripotency. These suggest that LIF functions for the maintenance of naïve pluripotency in a context dependent manner. We summarize how LIF-signal pathway is converged to maintain the naïve state of pluripotency.
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Affiliation(s)
- Satoshi Ohtsuka
- Laboratory for Pluripotent Stem Cell Studies; Center for Developmental Biology (CDB) RIKEN ; Kobe, Japan
| | - Yoko Nakai-Futatsugi
- Laboratory for Pluripotent Stem Cell Studies; Center for Developmental Biology (CDB) RIKEN ; Kobe, Japan
| | - Hitoshi Niwa
- Laboratory for Pluripotent Stem Cell Studies; Center for Developmental Biology (CDB) RIKEN; Kobe, Japan; Department of Pluripotent Stem Cell Biology; Institute of Molecular Embryology and Genetics (IMEG); Kumamoto University; Kumamoto, Japan
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Monahan AJ, Starz-Gaiano M. Socs36E limits STAT signaling via Cullin2 and a SOCS-box independent mechanism in the Drosophila egg chamber. Mech Dev 2015; 138 Pt 3:313-27. [PMID: 26277564 DOI: 10.1016/j.mod.2015.08.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 07/31/2015] [Accepted: 08/06/2015] [Indexed: 01/30/2023]
Abstract
The Suppressor of Cytokine Signaling (SOCS) proteins are critical, highly conserved feedback inhibitors of signal transduction cascades. The family of SOCS proteins is divided into two groups: ancestral and vertebrate-specific SOCS proteins. Vertebrate-specific SOCS proteins have been heavily studied as a result of their strong mutant phenotypes. However, the ancestral clade remains less studied, a potential result of genetic redundancies in mammals. Use of the genetically tractable organism Drosophila melanogaster enables in vivo assessment of signaling components and mechanisms with less concern about the functional redundancy observed in mammals. In this study, we investigated how the SOCS family member Suppressor of Cytokine Signaling at 36E (Socs36E) attenuates Janus Kinase/Signal Transducer and Activator of Transcription (Jak/STAT) activation during specification of motile border cells in Drosophila oogenesis. We found that Socs36E genetically interacts with the Cullin2 (Cul2) scaffolding protein. Like Socs36E, Cul2 is required to limit the number of motile cells in egg chambers. We demonstrated that loss of Cul2 in the follicle cells significantly increased nuclear STAT protein levels, which resulted in additional cells acquiring invasive properties. Further, reduction of Cul2 suppressed border cell migration defects that occur in a Stat92E-sensitized genetic background. Our data incorporated Cul2 into a previously described Jak/STAT-directed genetic regulatory network that is required to generate a discrete boundary between cell fates. We also found that Socs36E is able to attenuate STAT activity in the egg chamber when it does not have a functional SOCS box. Collectively, this work contributes mechanistic insight to a Jak/STAT regulatory genetic circuit, and suggests that Socs36E regulates Jak/STAT signaling via a Cul2-dependent mechanism, as well as by a Cullin-independent manner, in vivo.
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Affiliation(s)
- Amanda J Monahan
- Department of Biological Sciences, University of Maryland, Baltimore County, Baltimore, MD 21250, USA.
| | - Michelle Starz-Gaiano
- Department of Biological Sciences, University of Maryland, Baltimore County, Baltimore, MD 21250, USA.
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Suppressors of cytokine signaling 1 and 3 are upregulated in brain resident cells in response to virus-induced inflammation of the central nervous system via at least two distinctive pathways. J Virol 2014; 88:14090-104. [PMID: 25253351 DOI: 10.1128/jvi.01346-14] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
UNLABELLED Suppressors of cytokine signaling (SOCS) proteins are intracellular proteins that inhibit cytokine signaling in a variety of cell types. A number of viral infections have been associated with SOCS upregulation; however, not much is known about the mechanisms regulating SOCS expression during viral infection. In this study, we used two pathologically distinct intracerebral (i.c.) infection models to characterize temporal and spatial aspects of SOCS expression in the virus-infected central nervous system (CNS), and by employing various knockout mouse models, we sought to identify regulatory mechanisms that may underlie a virus induced upregulation of SOCS in the CNS. We found that i.c. infection with either lymphocytic choriomeningitis virus (LCMV) or yellow fever virus (YF) results in gradual upregulation of SOCS1/3 mRNA expression peaking at day 7 postinfection (p.i.). In the LCMV model, SOCS mRNA was expressed in brain resident cells, including astrocytes and some neurons, and for SOCS1 in particular this upregulation was almost entirely mediated by gamma interferon (IFN-γ) produced by infiltrating T cells. After infection with YF, we also found SOCS expression to be upregulated in brain resident cells with a peak on day 7 p.i., but in this model, the upregulation was only partially dependent on IFN-γ and T cells, indicating that at least one other mediator was involved in the upregulation of SOCS following YF infection. We conclude that virus-induced inflammation of the CNS is associated with upregulation of SOCS1/3 mRNA expression in brain resident cells and that at least two distinctive pathways can lead to this upregulation. IMPORTANCE In the present report, we have studied the induction of SOCS1 and SOCS3 expression in the context of virus-induced CNS infection. We found that both a noncytolytic and a cytolytic virus induce marked upregulation of SOCS1 and -3 expression. Notably, the kinetics of the observed upregulation follows that of activity within proinflammatory signaling pathways and, interestingly, type II interferon (IFN), which is also a key inducer of inflammatory mediators, seems to be essential in initiating this counterinflammatory response. Another key observation is that not only cells of the immune system but also CNS resident cells are actively involved in both the pro- and the counterinflammatory immune circuits; thus, for example, astrocytes upregulate both C-X-C-motif chemokine 10 (CXCL10) and SOCS when exposed to type II IFN in vivo.
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Tao B, Jin W, Xu J, Liang Z, Yao J, Zhang Y, Wang K, Cheng H, Zhang X, Ke Y. Myeloid-specific disruption of tyrosine phosphatase Shp2 promotes alternative activation of macrophages and predisposes mice to pulmonary fibrosis. THE JOURNAL OF IMMUNOLOGY 2014; 193:2801-11. [PMID: 25127857 DOI: 10.4049/jimmunol.1303463] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The alternative activation of M2 macrophages in the lungs has been implicated as a causative agent in pulmonary fibrosis; however, the mechanisms underlying M2 polarization are poorly characterized. In this study, we investigated the role of the ubiquitously expressed Src homology domain-containing tyrosine phosphatase Shp2 in this process. Shp2 inactivation augmented IL-4-mediated M2 polarization in vitro, suggesting that Shp2 regulates macrophage skewing and prevents a bias toward the M2 phenotype. Conditional removal of Shp2 in monocytes/macrophages with lysozyme M promoter-driven Cre recombinase caused an IL-4-mediated shift toward M2 polarization. Additionally, an increase in arginase activity was detected in Shp2(∆/∆) mice after i.p. injection of chitin, whereas Shp2-deficient macrophages showed enhanced M2 polarization and protection against schistosome egg-induced schistosomiasis. Furthermore, mutants were more sensitive than control mice to bleomycin-induced inflammation and pulmonary fibrosis. Shp2 was associated with IL-4Rα and inhibited JAK1/STAT6 signaling through its phosphatase activity; loss of Shp2 promoted the association of JAK1 with IL-4Rα, which enhanced IL-4-mediated JAK1/STAT6 activation that resulted in M2 skewing. Taken together, these findings define a role for Shp2 in alveolar macrophages and reveal that Shp2 is required to inhibit the progression of M2-associated pulmonary fibrosis.
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Affiliation(s)
- Bo Tao
- Department of Pathology and Pathophysiology, Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou 310058, China; and Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, Zhejiang 310003, China
| | - Wei Jin
- Department of Pathology and Pathophysiology, Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou 310058, China; and
| | - Jiaqi Xu
- Department of Pathology and Pathophysiology, Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou 310058, China; and Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, Zhejiang 310003, China
| | - Zuyu Liang
- Department of Pathology and Pathophysiology, Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou 310058, China; and
| | - Junlin Yao
- Department of Pathology and Pathophysiology, Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou 310058, China; and
| | - Yun Zhang
- Department of Pathology and Pathophysiology, Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou 310058, China; and Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, Zhejiang 310003, China
| | - Kai Wang
- Department of Pathology and Pathophysiology, Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou 310058, China; and
| | - Hongqiang Cheng
- Department of Pathology and Pathophysiology, Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou 310058, China; and Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, Zhejiang 310003, China
| | - Xue Zhang
- Department of Pathology and Pathophysiology, Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou 310058, China; and Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, Zhejiang 310003, China
| | - Yuehai Ke
- Department of Pathology and Pathophysiology, Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou 310058, China; and Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, Zhejiang 310003, China
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Nam KW, Chae S, Song HY, Mar W, Han MD. The role of wogonin in controlling SOCS3 expression in neuronal cells. Biochem Biophys Res Commun 2014; 450:1518-24. [PMID: 25035930 DOI: 10.1016/j.bbrc.2014.07.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Accepted: 07/05/2014] [Indexed: 11/16/2022]
Abstract
The mechanism underlying the wogonin-mediated increase in the expression of suppressor of cytokine signaling 3 (SOCS3) is unclear. Promoter deletion assay results revealed that wogonin-induced SOCS3 expression is dependent on the AP-1 consensus sequences and two STAT responsive elements (TTACAAGAA and TTCCAGGAA) in the 5'-flanking region of the SOCS3 gene in SH-SY5Y cells. Wogonin-induced SOCS3 expression was blocked by inhibitors of PI3K, Akt, Raf, p38, JNK, MEK, and STAT3, respectively. However, JAK2 inhibitors did not inhibit wogonin-induced SOCS3 expression. These results indicate that SOCS3-inducing effect of wogonin is caused by the activation of PI3K-mediated MAPK signaling pathways (Akt, ERK1/2, p38, and JNK), and the subsequent activation of AP-1 consensus sequences and STAT responsive elements in SH-SY5Y cells.
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Affiliation(s)
- Kung-Woo Nam
- Department of Life Science and Biotechnology, College of Natural Science, Soonchunhyang University, Asan 336-745, Republic of Korea
| | - Sungwook Chae
- Herbal Quality Control Center, Korea Institute of Oriental Medicine, 488 Expo, Daejeon 305-811, Republic of Korea
| | - Ho-Yeon Song
- Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan 330-721, Republic of Korea
| | - Woongchon Mar
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Man-Deuk Han
- Department of Life Science and Biotechnology, College of Natural Science, Soonchunhyang University, Asan 336-745, Republic of Korea.
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26
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Li Y, Han MF, Li WN, Shi AC, Zhang YY, Wang HY, Wang FX, Li L, Wu T, Ding L, Chen T, Yan WM, Luo XP, Ning Q. SOCS3 expression correlates with severity of inflammation in mouse hepatitis virus strain 3-induced acute liver failure and HBV-ACLF. ACTA ACUST UNITED AC 2014; 34:348-353. [PMID: 24939297 DOI: 10.1007/s11596-014-1281-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 05/14/2014] [Indexed: 12/27/2022]
Abstract
Recently, suppressor of cytokine signaling-3 (SOCS3) has been shown to be an inducible endogenous negative regulator of Janus kinase/signal transducers and activators of transcription (JAK/STAT) pathway which is relevant in inflammatory response, while its functions in acute liver failure and HBV-induced acute-on-chronic liver failure (HBV-ACLF) have not been fully elucidated. In this study, we explored the role of SOCS3 in the development of mouse hepatitis virus strain 3 (MHV-3)-induced acute liver failure and its expression in liver and peripheral blood mononuclear cells (PBMCs) of patients with HBV-ACLF. Inflammation-related gene expression was detected by real-time PCR, immunohistochemistry and Western blotting. The correlation between SOCS3 level and liver injury was studied. Our results showed that the SOCS3 expression was significantly elevated in both the liver tissue and PBMCs from patients with HBV-ACLF compared to mild chronic hepatitis B (CHB). Moreover, a time course study showed that SOCS3 level was increased remarkably in the liver of BALB/cJ mice at 72 h post-infection. Pro-inflammatory cytokines, interleukin (IL)-1β, IL-6, and tumor necrosis factor (TNF)-α, were also increased significantly at 72 h post-infection. There was a close correlation between hepatic SOCS3 level and IL-6, and the severity of liver injury defined by alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels, respectively. These data suggested that SOCS3 may play a pivotal role in the pathogenesis of MHV-3-induced acute liver failure and HBV-ACLF.
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MESH Headings
- Adult
- Alanine Transaminase/blood
- Animals
- Aspartate Aminotransferases/blood
- Blotting, Western
- End Stage Liver Disease/genetics
- End Stage Liver Disease/pathology
- End Stage Liver Disease/virology
- Female
- Gene Expression
- Hepatitis, Viral, Animal/genetics
- Hepatitis, Viral, Animal/pathology
- Hepatitis, Viral, Animal/virology
- Host-Pathogen Interactions
- Humans
- Interleukin-1beta/genetics
- Interleukin-1beta/metabolism
- Interleukin-6/genetics
- Interleukin-6/metabolism
- Leukocytes, Mononuclear/metabolism
- Leukocytes, Mononuclear/virology
- Liver Failure, Acute/genetics
- Liver Failure, Acute/pathology
- Liver Failure, Acute/virology
- Male
- Mice, Inbred BALB C
- Middle Aged
- Murine hepatitis virus/physiology
- Reverse Transcriptase Polymerase Chain Reaction
- Severity of Illness Index
- Suppressor of Cytokine Signaling 3 Protein
- Suppressor of Cytokine Signaling Proteins/blood
- Suppressor of Cytokine Signaling Proteins/genetics
- Suppressor of Cytokine Signaling Proteins/metabolism
- Tumor Necrosis Factor-alpha/genetics
- Tumor Necrosis Factor-alpha/metabolism
- Young Adult
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Affiliation(s)
- Yong Li
- Department and Institute of Infectious Diseases, University of Science and Technology, Wuhan, 430030, China
| | - Mei-Fang Han
- Department and Institute of Infectious Diseases, University of Science and Technology, Wuhan, 430030, China
| | - Wei-Na Li
- Department and Institute of Infectious Diseases, University of Science and Technology, Wuhan, 430030, China
| | - Ai-Chao Shi
- Department and Institute of Infectious Diseases, University of Science and Technology, Wuhan, 430030, China
| | - Yuan-Ya Zhang
- Department and Institute of Infectious Diseases, University of Science and Technology, Wuhan, 430030, China
| | - Hong-Yan Wang
- Department and Institute of Infectious Diseases, University of Science and Technology, Wuhan, 430030, China
| | - Fa-Xi Wang
- Department and Institute of Infectious Diseases, University of Science and Technology, Wuhan, 430030, China
| | - Lan Li
- Department and Institute of Infectious Diseases, University of Science and Technology, Wuhan, 430030, China
| | - Ting Wu
- Department and Institute of Infectious Diseases, University of Science and Technology, Wuhan, 430030, China
| | - Lin Ding
- Department and Institute of Infectious Diseases, University of Science and Technology, Wuhan, 430030, China
| | - Tao Chen
- Department and Institute of Infectious Diseases, University of Science and Technology, Wuhan, 430030, China
| | - Wei-Ming Yan
- Department and Institute of Infectious Diseases, University of Science and Technology, Wuhan, 430030, China
| | - Xiao-Ping Luo
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, 430030, China
| | - Qin Ning
- Department and Institute of Infectious Diseases, University of Science and Technology, Wuhan, 430030, China.
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27
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Williams JJL, Munro KMA, Palmer TM. Role of Ubiquitylation in Controlling Suppressor of Cytokine Signalling 3 (SOCS3) Function and Expression. Cells 2014; 3:546-62. [PMID: 24886706 PMCID: PMC4092859 DOI: 10.3390/cells3020546] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Revised: 05/01/2014] [Accepted: 05/04/2014] [Indexed: 02/06/2023] Open
Abstract
The realisation that unregulated activation of the Janus kinase-signal transducer and activator of transcription (JAK-STAT) pathway is a key driver of a wide range of diseases has identified its components as targets for therapeutic intervention by small molecule inhibitors and biologicals. In this review, we discuss JAK-STAT signalling pathway inhibition by the inducible inhibitor "suppressor of cytokine signaling 3 (SOCS3), its role in diseases such as myeloproliferative disorders, and its function as part of a multi-subunit E3 ubiquitin ligase complex. In addition, we highlight potential applications of these insights into SOCS3-based therapeutic strategies for management of conditions such as vascular re-stenosis associated with acute vascular injury, where there is strong evidence that multiple processes involved in disease progression could be attenuated by localized potentiation of SOCS3 expression levels.
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Affiliation(s)
- Jamie J L Williams
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow G12 8QQ, UK.
| | - Kirsten M A Munro
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow G12 8QQ, UK.
| | - Timothy M Palmer
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow G12 8QQ, UK.
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28
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Babon JJ, Varghese LN, Nicola NA. Inhibition of IL-6 family cytokines by SOCS3. Semin Immunol 2014; 26:13-9. [PMID: 24418198 DOI: 10.1016/j.smim.2013.12.004] [Citation(s) in RCA: 138] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 12/23/2013] [Indexed: 01/06/2023]
Abstract
IL-6 a multi-functional cytokine with important effects in both inflammation and haematopoiesis. SOCS3 is the primary inhibitor of IL-6 signalling, interacting with gp130, the common shared chain of the IL-6 family of cytokines, and JAK1, JAK2 and TYK2 to control both the duration of signalling and the biological response. Recent biochemical and structural studies have shown SOCS3 binds to only these three JAKs, all of which are associated with IL-6 signalling, and not JAK3. This specificity is determined by a three residue "GQM" motif in the kinase domain of JAK1, JAK2 and TYK2. SOCS3 binds to JAK and gp130 simultaneously, and inhibits JAK activity in an ATP-independent manner by partially occluding the kinase's substrate binding groove with its kinase inhibitory region. We therefore propose a model in which each of gp130, JAK and SOCS3 are directly bound to the other two, allowing SOCS3 to inhibit IL6 signalling with high potency and specificity.
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Affiliation(s)
- Jeffrey J Babon
- Walter and Eliza Hall Institute, Parkville, Australia; The University of Melbourne, Parkville, Australia.
| | - Leila N Varghese
- Walter and Eliza Hall Institute, Parkville, Australia; The University of Melbourne, Parkville, Australia
| | - Nicos A Nicola
- Walter and Eliza Hall Institute, Parkville, Australia; The University of Melbourne, Parkville, Australia
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29
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Bunda S, Kommaraju K, Heir P, Ohh M. SOCS-1 mediates ubiquitylation and degradation of GM-CSF receptor. PLoS One 2013; 8:e76370. [PMID: 24086733 PMCID: PMC3784415 DOI: 10.1371/journal.pone.0076370] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2013] [Accepted: 08/28/2013] [Indexed: 12/02/2022] Open
Abstract
Granulocyte-macrophage colony-stimulating factor (GM-CSF) and the related cytokines interleukin (IL)-3 and IL-5 regulate the production and functional activation of hematopoietic cells. GM-CSF acts on monocytes/macrophages and granulocytes, and several chronic inflammatory diseases and a number of haematological malignancies such as Juvenile myelomonocytic leukaemia (JMML) are associated with deregulated GM-CSF receptor (GMR) signaling. The downregulation of GMR downstream signaling is mediated in part by the clearance of activated GMR via the proteasome, which is dependent on the ubiquitylation of βc signaling subunit of GMR via an unknown E3 ubiquitin ligase. Here, we show that suppressor of cytokine signaling 1 (SOCS-1), best known for its ability to promote ubiquitin-mediated degradation of the non-receptor tyrosine kinase Janus kinase 2 (JAK2), also targets GMRβc for ubiquitin-mediated degradation and attenuates GM-CSF-induced downstream signaling.
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Affiliation(s)
- Severa Bunda
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Kamya Kommaraju
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Pardeep Heir
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Michael Ohh
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
- Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada
- * E-mail:
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30
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Induction of pluripotency. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2013; 786:5-25. [PMID: 23696349 DOI: 10.1007/978-94-007-6621-1_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
The molecular and phenotypic irreversibility of mammalian cell differentiation was a fundamental principle of developmental biology at least until the 1980s, despite numerous reports dating back to the 1950s of the induction of pluripotency in amphibian cells by nuclear transfer (NT). Landmark reports in the 1980s and 1990s in sheep progressively challenged this dogmatic assumption; firstly, embryonic development of reconstructed embryos comprising whole (donor) blastomeres fused to enucleated oocytes, and famously, the cloning of Dolly from a terminally differentiated cell. Thus, the intrinsic ability of oocyte-derived factors to reverse the differentiated phenotype was confirmed. The concomitant elucidation of methods for human embryonic stem cell isolation and cultivation presented opportunities for therapeutic cell replacement strategies, particularly through NT of patient nuclei to enucleated oocytes for subsequent isolation of patient-specific (autologous), pluripotent cells from the resulting blastocysts. Associated logistical limitations of working with human oocytes, in addition to ethical and moral objections prompted exploration of alternative approaches to generate autologous stem cells for therapy, utilizing the full repertoire of factors characteristic of pluripotency, primarily through cell fusion and use of pluripotent cell extracts. Stunningly, in 2006, Japanese scientists described somatic cell reprogramming through delivery of four key factors (identified through a deductive approach from 24 candidate genes). Although less efficient than previous approaches, much of current stem cell research adopts this focused approach to cell reprogramming and (autologous) cell therapy. This chapter is a quasi-historical commentary of the various aforementioned approaches for the induction of pluripotency in lineage-committed cells, and introduces transcriptional and epigenetic changes occurring during reprogramming.
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31
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White CA, Nicola NA. SOCS3: An essential physiological inhibitor of signaling by interleukin-6 and G-CSF family cytokines. JAKSTAT 2013; 2:e25045. [PMID: 24416642 PMCID: PMC3876435 DOI: 10.4161/jkst.25045] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Accepted: 05/15/2013] [Indexed: 12/21/2022] Open
Abstract
SOCS3 is an inducible negative feedback inhibitor of cytokine signaling. Conditional deletion of SOCS3 in mice using the Cre-lox system has now been applied to a range of cell types in the steady-state and under inflammatory, pathogenic, or tumorigenic stress, with the resulting phenotypes demonstrating the effects of SOCS3 in physiological and disease contexts. Together with recent structural and biochemical studies on the mechanisms of SOCS3 binding to cytokine receptors and associated kinases, we now have a better understanding of the non-redundant roles of SOCS3 in the inhibition of cytokine signaling via the receptors gp130, G-CSFR, leptinR, and IL-12Rβ. This review discusses the known functional activities of SOCS3 in fertility and development, inflammation, innate and adaptive immunity, and malignancy as determined by genetic studies in mice.
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Affiliation(s)
- Christine A White
- Walter and Eliza Hall Institute of Medical Research; Parkville, VIC Australia ; Department of Medical Biology; University of Melbourne; Parkville, VIC Australia
| | - Nicos A Nicola
- Walter and Eliza Hall Institute of Medical Research; Parkville, VIC Australia ; Department of Medical Biology; University of Melbourne; Parkville, VIC Australia
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32
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Linossi EM, Babon JJ, Hilton DJ, Nicholson SE. Suppression of cytokine signaling: the SOCS perspective. Cytokine Growth Factor Rev 2013; 24:241-8. [PMID: 23545160 PMCID: PMC3816980 DOI: 10.1016/j.cytogfr.2013.03.005] [Citation(s) in RCA: 138] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Accepted: 03/05/2013] [Indexed: 12/22/2022]
Abstract
The discovery of the Suppressor of Cytokine Signaling (SOCS) family of proteins has resulted in a significant body of research dedicated to dissecting their biological functions and the molecular mechanisms by which they achieve potent and specific inhibition of cytokine and growth factor signaling. The Australian contribution to this field has been substantial, with the initial discovery of SOCS1 by Hilton, Starr and colleagues (discovered concurrently by two other groups) and the following work, providing a new perspective on the regulation of JAK/STAT signaling. In this review, we reflect on the critical discoveries that have lead to our current understanding of how SOCS proteins function and discuss what we see as important questions for future research.
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Affiliation(s)
- Edmond M Linossi
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
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33
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Tang Y, Tian XC. JAK-STAT3 and somatic cell reprogramming. JAKSTAT 2013; 2:e24935. [PMID: 24470976 PMCID: PMC3894236 DOI: 10.4161/jkst.24935] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 05/03/2013] [Accepted: 05/04/2013] [Indexed: 01/19/2023] Open
Abstract
Reprogramming somatic cells to pluripotency, especially by the induced pluripotent stem cell (iPSC) technology, has become widely used today to generate various types of stem cells for research and for regenerative medicine. However the mechanism(s) of reprogramming still need detailed elucidation, including the roles played by the leukemia inhibitory factor (LIF) signaling pathway. LIF is central in maintaining the ground state pluripotency of mouse embryonic stem cells (ESCs) and iPSCs by activating the Janus kinase-signal transducer and activator of transcription 3 (JAK-STAT3) pathway. Characterizing and understanding this pathway holds the key to generate naïve pluripotent human iPSCs which will facilitate the development of patient-specific stem cell therapy. Here we review the historical and recent developments on how LIF signaling pathway regulates ESC pluripotency maintenance and somatic cell reprogramming, with a focus on JAK-STAT3.
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Affiliation(s)
- Yong Tang
- Center for Regenerative Biology; Department of Animal Science; University of Connecticut; Storrs, CT USA
| | - Xiuchun Cindy Tian
- Center for Regenerative Biology; Department of Animal Science; University of Connecticut; Storrs, CT USA
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34
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Liu JW, Hsu YC, Kao CY, Su HL, Chiu IM. Leukemia Inhibitory Factor-Induced Stat3 Signaling Suppresses Fibroblast Growth Factor 1-Induced Erk1/2 Activation to Inhibit the Downstream Differentiation in Mouse Embryonic Stem Cells. Stem Cells Dev 2013. [DOI: 10.1089/scd.2012.0229] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Jen-Wei Liu
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, Taiwan
- Department of Life Sciences, National Chung-Hsing University, Taichung, Taiwan
| | - Yi-Chao Hsu
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, Taiwan
| | - Chien-Yu Kao
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, Taiwan
- Institute of Biotechnology and Department of Life Science, Graduate Program of Biotechnology in Medicine, National Tsing Hua University, Hsinchu, Taiwan
| | - Hong-Lin Su
- Department of Life Sciences, National Chung-Hsing University, Taichung, Taiwan
| | - Ing-Ming Chiu
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, Taiwan
- Department of Life Sciences, National Chung-Hsing University, Taichung, Taiwan
- Institute of Biotechnology and Department of Life Science, Graduate Program of Biotechnology in Medicine, National Tsing Hua University, Hsinchu, Taiwan
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35
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Kershaw NJ, Murphy JM, Liau NPD, Varghese LN, Laktyushin A, Whitlock EL, Lucet IS, Nicola NA, Babon JJ. SOCS3 binds specific receptor-JAK complexes to control cytokine signaling by direct kinase inhibition. Nat Struct Mol Biol 2013; 20:469-76. [PMID: 23454976 PMCID: PMC3618588 DOI: 10.1038/nsmb.2519] [Citation(s) in RCA: 209] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Accepted: 01/11/2013] [Indexed: 12/03/2022]
Abstract
The inhibitory protein SOCS3 plays a key role in the immune and hematopoietic systems by regulating signaling induced by specific cytokines. SOCS3 functions by inhibiting the catalytic activity of Janus Kinases (JAKs) that initiate signaling within the cell. We determined the crystal structure of a ternary complex between murine SOCS3, JAK2 (kinase domain) and a fragment of the IL-6 receptor β-chain. The structure shows that SOCS3 binds JAK2 and receptor simultaneously, using two opposing surfaces. Whilst the phosphotyrosine-binding groove on the SOCS3 SH2 domain is occupied by receptor, JAK2 binds in a phospho-independent manner to a non-canonical surface. The kinase inhibitory region of SOCS3 occludes the substrate-binding groove on JAK2 and biochemical studies show it blocks substrate association. These studies reveal that SOCS3 targets specific JAK-cytokine receptor pairs and explains the mechanism and specificity of SOCS action.
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Affiliation(s)
- Nadia J Kershaw
- Department of Structural Biology, Walter and Eliza Hall Institute, Parkville, Australia
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36
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Zhang JG, Nicholson SE. Detection of endogenous SOCS1 and SOCS3 proteins by immunoprecipitation and Western blot analysis. Methods Mol Biol 2013; 967:249-59. [PMID: 23296735 DOI: 10.1007/978-1-62703-242-1_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The suppressors of cytokine signalling (SOCS) protein family consist of eight members (SOCS 1-7, and CIS). SOCS1 and SOCS3 are the best-studied family members and have been shown to act as negative feedback inhibitors of the JAK/STAT signalling pathway. To study the physiological roles of the SOCS proteins, it is necessary to establish methods for detecting endogenous proteins often expressed at low levels in cells after cytokine induction. To facilitate the detection of endogenous SOCS1 and SOCS3 proteins, we have generated in-house antibodies specific to these proteins, which we have used together with commercially available antibodies. Here, we describe the methods for immunoprecipitating SOCS1 and SOCS3 proteins from mouse tissue extracts and their subsequent detection by Western blot analysis. These methods can also be applied to the detection of SOCS1 and SOCS3 in cell lines.
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Affiliation(s)
- Jian-Guo Zhang
- Cancer and Haematology Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.
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Qiu X, Guo G, Chen K, Kashiwada M, Druker BJ, Rothman PB, Chen JL. A requirement for SOCS-1 and SOCS-3 phosphorylation in Bcr-Abl-induced tumorigenesis. Neoplasia 2012; 14:547-58. [PMID: 22787435 DOI: 10.1596/neo.12230] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Revised: 04/25/2012] [Accepted: 04/30/2012] [Indexed: 01/10/2023]
Abstract
Suppressors of cytokine signaling 1 and 3 (SOCS-1 and SOCS-3) are inhibitors of the Janus tyrosine kinase (JAK)/signal transducers and activators of transcription (STAT) pathway and function in a negative feedback loop during cytokine signaling. Abl transformation is associated with constitutive activation of JAK/STAT-dependent signaling. However, the mechanism by which Abl oncoproteins bypass SOCS inhibitory regulation remains poorly defined. Here, we demonstrate that coexpression of Bcr-Abl with SOCS-1 or SOCS-3 results in tyrosine phosphorylation of these SOCS proteins. Interestingly, SOCS-1 is highly tyrosine phosphorylated in one of five primary chronic myelogenous leukemia samples. Bcr-Abl-dependent tyrosine phosphorylation of SOCS-1 and SOCS-3 occurs mainly on Tyr 155 and Tyr 204 residues of SOCS-1 and on Tyr 221 residue of SOCS-3. We observed that phosphorylation of these SOCS proteins was associated with their binding to Bcr-Abl. Bcr-Abl-dependent phosphorylation of SOCS-1 and SOCS-3 diminished their inhibitory effects on the activation of JAK and STAT5 and thereby enhanced JAK/STAT5 signaling. Strikingly, disrupting the tyrosine phosphorylation of SOCS-1 or SOCS-3 impaired the expression of Bcl-X(L) protein and sensitized K562 leukemic cells to undergo apoptosis. Moreover, selective mutation of tyrosine phosphorylation sites of SOCS-1 or SOCS-3 significantly blocked Bcr-Abl-mediated tumorigenesis in nude mice and inhibited Bcr-Abl-mediated murine bone marrow transformation. Together, these results reveal a mechanism of how Bcr-Abl may overcome SOCS-1 and SOCS-3 inhibition to constitutively activate the JAK/STAT-dependent signaling, and suggest that Bcr-Abl may critically requires tyrosine phosphorylation of SOCS-1 and SOCS-3 to mediate tumorigenesis when these SOCS proteins are present in cells.
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Affiliation(s)
- Xiaoxue Qiu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
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38
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Abstract
Suppressors of cytokine signaling 3 (SOCS3) has been shown to be an important and non-redundant feedback inhibitor of several cytokines including leukemia inhibitory factor, IL-6, IL-11, Ciliary neurotrophic factor (CNTF), leptin, and granulocyte colony-stimulating factor (G-CSF). Loss of SOCS3 in vivo has profound effects on placental development, inflammation, fat-induced weight gain, and insulin sensitivity. SOCS3 expression is induced by Janus kinase (JAK)/signal transducers and activators of transcription (STAT) signaling and it then binds to specific cytokine receptors (including gp130, G-CSF, and leptin receptors). SOCS3 then inhibits JAK/STAT signaling in two distinct ways. First, SOCS3 is able to directly inhibit the catalytic activity of JAK1, JAK2, or TYK2 while remaining bound to the cytokine receptor. Second, SOCS3 recruits elongins B/C and Cullin5 to generate an E3 ligase that ubiquitinates both JAK and cytokine receptor targeting them for proteasomal degradation. Detailed in vivo studies have revealed that SOCS3 action not only limits the duration of cytokine signaling to prevent overactivity but it is also important in maintaining the specificity of cytokine signaling.
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Affiliation(s)
- Jeffrey J Babon
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia.
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Unbiased identification of substrates for the Epac1-inducible E3 ubiquitin ligase component SOCS-3. Biochem Soc Trans 2012; 40:215-8. [PMID: 22260693 DOI: 10.1042/bst20110629] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The anti-inflammatory effects of the prototypical second messenger cAMP have been extensively documented in multiple cell types. One mechanism by which these effects are achieved is via Epac1 (exchange protein directly activated by cAMP 1)-dependent induction of SOCS-3 (suppressor of cytokine signalling 3), which binds and inhibits specific class I cytokine receptors. One important aspect of SOCS-3 functionality is its role as the specificity determinant within an E3 ubiquitin ligase complex which targets cellular substrates for polyubiquitylation and proteasomal degradation. In the present review, we describe key inhibitory processes that serve to reduce cytokine receptor signalling, focusing primarily on SOCS protein function and regulation. We also outline a strategy we have developed to identify novel ubiquitylated substrates for the Epac1-inducible SOCS-3 E3 ubiquitin ligase complex following purification of the ubiquitinome. It is anticipated that identifying substrates for the Epac1-regulated SOCS-3 E3 ubiquitin ligase, and assessment of their functional significance, may pinpoint new sites for therapeutic intervention that would achieve therapeutic efficacy of cAMP-elevating drugs while minimizing the adverse effects usually associated with these agents.
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40
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Gao Y, Cimica V, Reich NC. Suppressor of cytokine signaling 3 inhibits breast tumor kinase activation of STAT3. J Biol Chem 2012; 287:20904-12. [PMID: 22547065 DOI: 10.1074/jbc.m111.334144] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Breast tumor kinase (Brk) was originally isolated from a human metastatic breast tumor, but also is found expressed in other epithelial tumors and in a subset of normal epithelia. Brk is a tyrosine kinase and its expression in breast carcinoma has been linked to tumor progression. The signal transducer and activator of transcription 3 (STAT3) is one of the substrate targets of Brk, and elevated tyrosine phosphorylation of STAT3 is known to contribute to oncogenesis. Conventional activation of STAT3 occurs in response to cytokine stimulation of Janus tyrosine kinases (JAK). One of the negative regulators discovered in cytokine signaling of the JAK-STAT pathway is the suppressor of cytokine signaling 3 (SOCS3). In this report we describe the finding that SOCS3 can also inhibit the unconventional target, Brk. Investigation of the mechanism by which SOCS3 inhibits Brk reveals the SOCS3 protein binds to Brk primarily via its SH2 domain, and its main inhibitory effect is mediated by the SOCS3 kinase inhibitory region (KIR). SOCS3 has only a modest effect on promoting Brk degradation, and this requires the C-terminal SOCS box domain. SOCS3 is the only known inhibitor of Brk, and knowledge of the mechanisms by which SOCS3 inhibits Brk may lead to methods that block Brk in cancer progression.
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Affiliation(s)
- Yiwei Gao
- Department of Molecular Genetics and Microbiology, Stony Brook University, Stony Brook, New York 11794, USA
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Abstract
Leukemia inhibitory factor (LIF) is a soluble interleukin-6 family cytokine that regulates a number of physiologic functions, including normal skeletal remodeling. LIF signals through the cytokine co-receptor glycoprotein-130 in complex with its cytokine-specific receptor [LIF receptor (LIFR)] to activate signaling cascades in cells of the skeletal system, including stromal cells, chondrocytes, osteoblasts, osteocytes, adipocytes, and synovial fibroblasts. LIF action on skeletal cells is cell-type specific, and frequently dependent on the state of cell differentiation. This review describes the expression patterns of LIF and LIFR in bone, their regulation by physiological and inflammatory agents, as well as cell-specific influences of LIF on osteoblast, osteoclast, chondrocyte, and adipocyte differentiation. The actions of LIF in normal skeletal growth and maintenance, in pathological states (e.g. autocrine tumor cell signaling and growth in bone) and inflammatory conditions (e.g. arthritis) will be discussed, as well as the signaling pathways activated by LIF and their importance in bone formation and resorption.
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Affiliation(s)
- Natalie A Sims
- St Vincent's Institute of Medical Research, Melbourne, Victoria 3065, Australia.
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42
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Linossi EM, Nicholson SE. The SOCS box-adapting proteins for ubiquitination and proteasomal degradation. IUBMB Life 2012; 64:316-23. [PMID: 22362562 DOI: 10.1002/iub.1011] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Accepted: 01/25/2012] [Indexed: 01/29/2023]
Abstract
The suppressor of cytokine signalling (SOCS) box was first identified in the SH2-containing SOCS box family (cytokine-inducible SH2-containing protein, SOCS1-7) and is a 40-amino acid motif, which functions to recruit an E3 ubiquitin ligase complex consisting of the adapter proteins elongins B and C, Rbx2 and the scaffold protein Cullin5. The SOCS box is found in a diverse array of intracellular signalling molecules, many of which contain different protein interaction domains such as SPRY and WD40 domains, leucine and ankyrin repeats or other functional domains such as GTPases. In general, the SOCS box-containing proteins are thought to act as substrate-recognition modules to mediate the polyubiquitination and subsequent degradation of substrate proteins by the 26S proteasome.
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Affiliation(s)
- Edmond M Linossi
- Inflammation Division, The Walter and Eliza Hall Institute for Medical Research, Parkville, Victoria
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The JAK inhibitor AZD1480 regulates proliferation and immunity in Hodgkin lymphoma. Blood Cancer J 2011; 1:e46. [PMID: 22829094 PMCID: PMC3255510 DOI: 10.1038/bcj.2011.46] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Revised: 08/16/2011] [Accepted: 09/26/2011] [Indexed: 01/12/2023] Open
Abstract
Aberrant activation of the Janus kinase (JAK)/signal transducer and activator of transcription (STAT) pathway has been reported to promote proliferation and survival of Hodgkin and Reed–Sternberg cells of Hodgkin lymphoma (HL). We investigated the activity of the JAK inhibitor AZD1480 in HL-derived cell lines and determined its mechanisms of action. AZD1480 at low doses (0.1–1 μ) potently inhibited STATs phosphorylation, but did not predictably result in antiproliferative effects, as it activated a negative-feedback loop causing phosphorylation of JAK2 and extracellular signal-regulated kinases 1 and 2 (ERK1/2), and increased IP-10, RANTES and interleukin (IL)-8 concentrations in the supernatants. Inhibition of the ERK activity by mitogen-activated extracellular signal regulated kinase (MEK) inhibitors (UO126 and PD98059) enhanced the cytotoxic activity of AZD1480. Interestingly, submicromolar concentrations of AZD1480 demonstrated significant immunoregulatory effects by downregulating T-helper 2 cytokines and chemokines, including IL-13 and thymus- and activation-regulated chemokine, and the surface expression of the immunosuppressive programmed death ligands 1 and 2. Higher concentrations of AZD1480 (5 μ) induced G2/M arrest and cell death by inhibiting Aurora kinases. Our study demonstrates that AZD1480 regulates proliferation and immunity in HL cell lines and provides mechanistic rationale for evaluating AZD1480 alone or in combination with MEK inhibitors in HL.
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Regulation of embryonic stem cell self-renewal and pluripotency by leukaemia inhibitory factor. Biochem J 2011; 438:11-23. [PMID: 21793804 DOI: 10.1042/bj20102152] [Citation(s) in RCA: 144] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
LIF (leukaemia inhibitory factor) is a key cytokine for maintaining self-renewal and pluripotency of mESCs (mouse embryonic stem cells). Upon binding to the LIF receptor, LIF activates three major intracellular signalling pathways: the JAK (Janus kinase)/STAT3 (signal transducer and activator of transcription 3), PI3K (phosphoinositide 3-kinase)/AKT and SHP2 [SH2 (Src homology 2) domain-containing tyrosine phosphatase 2]/MAPK (mitogen-activated protein kinase) pathways. These pathways converge to orchestrate the gene expression pattern specific to mESCs. Among the many signalling events downstream of the LIF receptor, activation and DNA binding of the transcription factor STAT3 plays a central role in transducing LIF's functions. The fundamental role of LIF for pluripotency was highlighted further by the discovery that LIF accelerates the conversion of epiblast-derived stem cells into a more fully pluripotent state. In the present review, we provide an overview of the three major LIF signalling pathways, the molecules that interact with STAT3 and the current interpretations of the roles of LIF in pluripotency.
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Lei JT, Mazumdar T, Martinez-Moczygemba M. Three lysine residues in the common β chain of the interleukin-5 receptor are required for Janus kinase (JAK)-dependent receptor ubiquitination, endocytosis, and signaling. J Biol Chem 2011; 286:40091-103. [PMID: 21965659 DOI: 10.1074/jbc.m111.273482] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Eosinophils are multifunctional leukocytes implicated in the pathogenesis of numerous inflammatory diseases including allergic asthma and hypereosinophilic syndrome. Eosinophil physiology is critically dependent on IL-5 and the IL-5 receptor (IL-5R), composed of a ligand binding α chain (IL-5Rα), and a common β chain, βc. Previously, we demonstrated that the βc cytoplasmic tail is ubiquitinated and degraded by proteasomes following IL-5 stimulation. However, a complete understanding of the role of βc ubiquitination in IL-5R biology is currently lacking. By using a well established, stably transduced HEK293 cell model system, we show here that in the absence of ubiquitination, βc subcellular localization, IL-5-induced endocytosis, turnover, and IL-5R signaling were significantly impaired. Whereas ubiquitinated IL-5Rs internalized into trafficking endosomes for their degradation, ubiquitination-deficient IL-5Rs accumulated on the cell surface and displayed blunted signaling even after IL-5 stimulation. Importantly, we identified a cluster of three membrane-proximal βc lysine residues (Lys(457), Lys(461), and Lys(467)) whose presence was required for both JAK1/2 binding to βc and receptor ubiquitination. These findings establish that JAK kinase binding to βc requires the presence of three critical βc lysine residues, and this binding event is essential for receptor ubiquitination, endocytosis, and signaling.
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Affiliation(s)
- Jonathan T Lei
- Department of Microbial and Molecular Pathogenesis, College of Medicine, Texas A&M Health Science Center, Houston, Texas 77030, USA
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Li L, Modi H, McDonald T, Rossi J, Yee JK, Bhatia R. A critical role for SHP2 in STAT5 activation and growth factor-mediated proliferation, survival, and differentiation of human CD34+ cells. Blood 2011; 118:1504-15. [PMID: 21670473 PMCID: PMC3156043 DOI: 10.1182/blood-2010-06-288910] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2010] [Accepted: 05/27/2011] [Indexed: 12/15/2022] Open
Abstract
SHP2, a cytoplasmic protein-tyrosine phosphatase encoded by the PTPN11 gene, plays a critical role in developmental hematopoiesis in the mouse, and gain-of-function mutations of SHP2 are associated with hematopoietic malignancies. However, the role of SHP2 in adult hematopoiesis has not been addressed in previous studies. In addition, the role of SHP2 in human hematopoiesis has not been described. These questions are of considerable importance given the interest in development of SHP2 inhibitors for cancer treatment. We used shRNA-mediated inhibition of SHP2 expression to investigate the function of SHP2 in growth factor (GF) signaling in normal human CD34(+) cells. SHP2 knockdown resulted in markedly reduced proliferation and survival of cells cultured with GF, and reduced colony-forming cell growth. Cells expressing gain-of-function SHP2 mutations demonstrated increased dependency on SHP2 expression for survival compared with cells expressing wild-type SHP2. SHP2 knockdown was associated with significantly reduced myeloid and erythroid differentiation with retention of CD34(+) progenitors with enhanced proliferative capacity. Inhibition of SHP2 expression initially enhanced and later inhibited STAT5 phosphorylation and reduced expression of the antiapoptotic genes MCL1 and BCLXL. These results indicate an important role for SHP2 in STAT5 activation and GF-mediated proliferation, survival, and differentiation of human progenitor cells.
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Affiliation(s)
- Liang Li
- Division of Hematopoietic Stem Cell and Leukemia Research, City of Hope Nationa, Medical Center, Duarte, CA, USA
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Leukemia Inhibitory Factor Inhibits T Helper 17 Cell Differentiation and Confers Treatment Effects of Neural Progenitor Cell Therapy in Autoimmune Disease. Immunity 2011; 35:273-84. [DOI: 10.1016/j.immuni.2011.06.011] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Revised: 04/11/2011] [Accepted: 06/06/2011] [Indexed: 12/15/2022]
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The Role of the Leukemia Inhibitory Factor (LIF) - Pathway in Derivation and Maintenance of Murine Pluripotent Stem Cells. Genes (Basel) 2011; 2:280-97. [PMID: 24710148 PMCID: PMC3924847 DOI: 10.3390/genes2010280] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Revised: 02/26/2011] [Accepted: 03/07/2011] [Indexed: 11/16/2022] Open
Abstract
Developmental biology, regenerative medicine and cancer biology are more and more interested in understanding the molecular mechanisms controlling pluripotency and self-renewal in stem cells. Pluripotency is maintained by a synergistic interplay between extrinsic stimuli and intrinsic circuitries, which allow sustainment of the undifferentiated and self-renewing state. Nevertheless, even though a lot of efforts have been made in the past years, the precise mechanisms regulating these processes remain unclear. One of the key extrinsic factors is leukemia inhibitory factor (LIF) that is largely used for the cultivation and derivation of mouse embryonic and induced pluripotent stem cells. LIF acts through the LIFR/gp130 receptor and activates STAT3, an important regulator of mouse embryonic stem cell self-renewal. STAT3 is known to inhibit differentiation into both mesoderm and endoderm lineages by preventing the activation of lineage-specific differentiation programs. However, LIF activates also parallel circuitries like the PI3K-pathway and the MEK/ERK-pathway, but its mechanisms of action remain to be better elucidated. This review article aims at summarizing the actual knowledge on the importance of LIF in the maintenance of pluripotency and self-renewal in embryonic and induced pluripotent stem cells.
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Abstract
PURPOSE OF REVIEW In 1985-1989, erythropoietin (EPO), its receptor (EPOR), and janus kinase 2 were cloned; established to be essential for definitive erythropoiesis; and initially intensely studied. Recently, new impetus, tools, and model systems have emerged to re-examine EPO/EPOR actions, and are addressed in this review. Impetus includes indications that EPO affects significantly more than standard erythroblast survival pathways, the development of novel erythropoiesis-stimulating agents, increasing evidence for EPO/EPOR cytoprotection of ischemically injured tissues, and potential EPO-mediated worsening of tumorigenesis. RECENT FINDINGS New findings are reviewed in four functional contexts: (pro)erythroblast survival mechanisms, new candidate EPO/EPOR effects on erythroid cell development and new EPOR responses, EPOR downmodulation and trafficking, and novel erythropoiesis-stimulating agents. SUMMARY As Current Opinion, this monograph seeks to summarize, and provoke, new EPO/EPOR action concepts. Specific problems addressed include: beyond (and before) BCL-XL, what key survival factors are deployed in early-stage proerythroblasts? Are distinct EPO/EPOR signals transduced in stage-selective fashions? Is erythroblast proliferation also modulated by EPO/EPOR signals? What functions are subserved by new noncanonical EPO/EPOR response factors (e.g. podocalyxin like-1, tribbles 3, reactive oxygen species, and nuclear factor kappa B)? What key regulators mediate EPOR inhibition and trafficking? And for emerging erythropoiesis-stimulating agents, to what extent do activities parallel EPOs (or differ in advantageous, potentially complicating ways, or both)?
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Kiu H, Greenhalgh CJ, Thaus A, Hilton DJ, Nicola NA, Alexander WS, Roberts AW. Regulation of multiple cytokine signalling pathways by SOCS3 is independent of SOCS2. Growth Factors 2009; 27:384-93. [PMID: 19919527 PMCID: PMC3412171 DOI: 10.3109/08977190903210954] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Suppressor of cytokine signalling (SOCS) 3 is an essential regulator of cytokine signalling, and in turn its expression is tightly regulated. Data from overexpression studies in cell lines suggest that SOCS2 regulates SOCS3 protein degradation, by forming a molecular bridge to an E3 ubiquitin-ligase complex. Whether this regulation is relevant in primary cells is unknown. In this study, we utilized Socs2( - / - ) mice to examine the role of SOCS2 in modulating SOCS3 expression and degradation, and its impact on interleukin-2 (IL-2) and IL-6 signalling in primary haemopoietic cells. Both biochemical and biological analyses demonstrated unperturbed SOCS3 expression and cytokine signalling in the absence of SOCS2. Our results suggest that SOCS2 is not a physiological regulator of SOCS3 expression and action in primary haemopoietic cells.
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Affiliation(s)
- Hiu Kiu
- Division of Cancer and Haematology, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, 3050, Australia
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