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Zhi Y, Huang S, Lina Z. Suppressor of Cytokine Signaling 6 in cancer development and therapy: deciphering its emerging and suppressive roles. Cytokine Growth Factor Rev 2022; 64:21-32. [DOI: 10.1016/j.cytogfr.2022.02.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 02/07/2022] [Indexed: 12/16/2022]
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Ma J, Xu LY, Sun QH, Wan XY, BingLi. Inhibition of miR-1298-5p attenuates sepsis lung injury by targeting SOCS6. Mol Cell Biochem 2021; 476:3745-3756. [PMID: 34100174 DOI: 10.1007/s11010-021-04170-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 04/23/2021] [Indexed: 02/06/2023]
Abstract
Sepsis is one of the leading causes of morbidity and mortality and a major cause of acute lung injury (ALI). carried by exosomes play a role in a variety of diseases. However,there are not many studies of exosomal miRNAs in sepsis and sepsis lung injury.miR-1298-5p and suppressor of cytokine signaling 6 (SOCS6) were silenced or overexpressed in human bronchial epithelial cells (BEAS-2B). PKH-67 Dye was used to trace exosome endocytosis. Cell permeability was evaluated by measuring trans-epithelial electrical resistance (TEER) and FITC dextran flux. ELISA kits were used for cytokine detection. Quantitative RT-PCR and western blots were used to evaluate gene expression. miR-1298-5p was elevated in exosomes from patients with sepsis lung injury (Sepsis_exo). Treatment of BEAS-2B cells using Sepsis_exo significantly inhibited cell proliferation, and induced cell permeability and inflammatory response. miR-1298-5p directly targeted SOCS6. Overexpressing SOCS6 reversed miR-1298-5p-induced cell permeability and inflammatory response. Inhibition of STAT3 blocked SOCS6-silencing caused significant increase of cell permeability and inflammation. Exosomes isolated from patients of sepsis lung injury increased cell permeability and inflammatory response in BEAS-2B cells through exosomal miR-1298-5p which targeted SOCS6 via STAT3 pathway. The findings highlight the importance of miR-1298-5p/SOCS6/STAT3 axis in sepsis lung injury and provide new insights into therapeutic strategies for sepsis lung injury.
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Affiliation(s)
- Jian Ma
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Doctor's Office, 10th floor, building 2, NO.507 Zhengmin Road, Yangpu District, Shanghai, 200433, P.R. China.
| | - Li-Yun Xu
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Doctor's Office, 10th floor, building 2, NO.507 Zhengmin Road, Yangpu District, Shanghai, 200433, P.R. China
| | - Qiu-Hong Sun
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Doctor's Office, 10th floor, building 2, NO.507 Zhengmin Road, Yangpu District, Shanghai, 200433, P.R. China
| | - Xiao-Yu Wan
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Doctor's Office, 10th floor, building 2, NO.507 Zhengmin Road, Yangpu District, Shanghai, 200433, P.R. China
| | - BingLi
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Doctor's Office, 10th floor, building 2, NO.507 Zhengmin Road, Yangpu District, Shanghai, 200433, P.R. China
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Mevizou R, Sirvent A, Roche S. Control of Tyrosine Kinase Signalling by Small Adaptors in Colorectal Cancer. Cancers (Basel) 2019; 11:cancers11050669. [PMID: 31091767 PMCID: PMC6562749 DOI: 10.3390/cancers11050669] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/09/2019] [Accepted: 05/12/2019] [Indexed: 01/06/2023] Open
Abstract
Tyrosine kinases (TKs) phosphorylate proteins on tyrosine residues as an intracellular signalling mechanism to coordinate intestinal epithelial cell communication and fate decision. Deregulation of their activity is ultimately connected with carcinogenesis. In colorectal cancer (CRC), it is still unclear how aberrant TK activities contribute to tumour formation because TK-encoding genes are not frequently mutated in this cancer. In vertebrates, several TKs are under the control of small adaptor proteins with potential important physiopathological roles. For instance, they can exert tumour suppressor functions in human cancer by targeting several components of the oncogenic TK signalling cascades. Here, we review how the Src-like adaptor protein (SLAP) and the suppressor of cytokine signalling (SOCS) adaptor proteins regulate the SRC and the Janus kinase (JAK) oncogenic pathways, respectively, and how their loss of function in the intestinal epithelium may influence tumour formation. We also discuss the potential therapeutic value of these adaptors in CRC.
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Affiliation(s)
- Rudy Mevizou
- CRBM, CNRS, Univ. Montpellier, "Equipe labellisée Ligue Contre le Cancer", F-34000 Montpellier, France.
| | - Audrey Sirvent
- CRBM, CNRS, Univ. Montpellier, "Equipe labellisée Ligue Contre le Cancer", F-34000 Montpellier, France.
| | - Serge Roche
- CRBM, CNRS, Univ. Montpellier, "Equipe labellisée Ligue Contre le Cancer", F-34000 Montpellier, France.
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Zhang X, Wang G, Sun Z, Hou J, Wang Y. microRNA-mRNA analysis in pituitary and hypothalamus of sterile Japanese flounder. Mol Reprod Dev 2019; 86:727-737. [PMID: 31012201 DOI: 10.1002/mrd.23150] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 02/28/2019] [Accepted: 03/30/2019] [Indexed: 12/16/2022]
Abstract
Double haploidy is an advantageous situation for genetic mapping and genome sequencing studies. In the present study, the hypothalamus and pituitary gland from sterile and fertile double-haploid (DH) Japanese flounders (aged 5 years) were used as experimental materials for studying the expression of genes in individuals with reproductive disorders, using high-throughput sequencing technology. The results revealed abnormal levels of some hormones in sterile DHs during the breeding season. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway analysis showed that the significantly different microRNAs and messenger RNAs were related to metabolism, signal transduction, and melanogenesis; those related to steroid hormone synthesis and secretion related pathways were not detected. Our results suggest that the key to sterility in DHs was the arrested ovary development. However, the reason for arrested ovary development was mainly related to the lower levels of expression of genes involved in steroid biosynthesis in gonads, and was not related to the pituitary. For maintaining homeostasis, the hypothalamus and pituitary would have large differences in several processes, including signal transduction, metabolism, and immune response. The present study provides primary data for further studies on sterility in fish, and even in other animals.
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Affiliation(s)
- Xiaoyan Zhang
- Key Laboratory of Aquatic Genomics, Ministry of Agriculture, Beijing, China.,Beidaihe Central Experiment Station, Chinese Academy of Fishery Sciences, Qinhuangdao, China
| | - Guixing Wang
- Beidaihe Central Experiment Station, Chinese Academy of Fishery Sciences, Qinhuangdao, China
| | - Zhaohui Sun
- Beidaihe Central Experiment Station, Chinese Academy of Fishery Sciences, Qinhuangdao, China
| | - Jilun Hou
- Beidaihe Central Experiment Station, Chinese Academy of Fishery Sciences, Qinhuangdao, China
| | - Yufen Wang
- Beidaihe Central Experiment Station, Chinese Academy of Fishery Sciences, Qinhuangdao, China
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miR-1260b, mediated by YY1, activates KIT signaling by targeting SOCS6 to regulate cell proliferation and apoptosis in NSCLC. Cell Death Dis 2019; 10:112. [PMID: 30737371 PMCID: PMC6368632 DOI: 10.1038/s41419-019-1390-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 01/03/2019] [Accepted: 01/21/2019] [Indexed: 01/16/2023]
Abstract
Non-small cell lung cancer (NSCLC) is one of the most common aggressive malignancies. miRNAs have been identified as important biomarkers and regulators of NSCLC. However, the functional contributions of miR-1260b to NSCLC cell proliferation and apoptosis have not been studied. In this study, miR-1260b was upregulated in NSCLC plasma, tissues, and cell lines, and its high expression was correlated with tumor size and progression. Functionally, miR-1260b overexpression promoted cell proliferation and cell cycle, conversely inhibited cell apoptosis and senescence. Mechanically, miR-1260b negatively regulated SOCS6 by directly binding to its 3′-UTR. Furthermore, miR-1260b-mediated suppression of SOCS6 activated KIT signaling. Moreover, YY1 was an upstream regulator of miR-1260b. This study is the first to illustrate that miR-1260b, mediated by YY1, activates KIT signaling by targeting SOCS6 to regulate NSCLC cell proliferation and apoptosis, and is a potential biomarker and therapeutic target for NSCLC. In sum, our work provides new insights into the molecular mechanisms of NSCLC involved in cell proliferation and apoptosis.
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Qu C, Xu Q, Lu M, Wang F, Liu Z, Liu D, Yang W, Yi Q, Wang L, Song L. The involvement of suppressor of cytokine signaling 6 (SOCS6) in immune response of Chinese mitten crab Eriocheir sinensis. FISH & SHELLFISH IMMUNOLOGY 2018; 72:502-509. [PMID: 29155031 DOI: 10.1016/j.fsi.2017.11.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 11/12/2017] [Accepted: 11/14/2017] [Indexed: 06/07/2023]
Abstract
Suppressor of cytokine signaling (SOCS) is a family of cytokine-inducible negative regulators of cytokine signaling and it plays a crucial role in various physiological processes. In the present study, the full-length cDNA of a SOCS (designated as EsSOCS6) was cloned from Chinese mitten crab Eriocheir sinensis. The open reading frame of EsSOCS6 cDNA was of 1266 bp, which encoded a polypeptide of 421 amino acid residues. There were two typically conserved SOCS family domains in EsSOCS6, including a central Src homology 2 (SH2) domain and a C-terminal SOCS box. The deduced amino acid sequence of EsSOCS6 shared 72-76% similarity with those of other SOCS6 family members. EsSOCS6 mRNA was constitutively expressed in all the examined tissues with higher expression levels in the immune-related tissues, such as hepatopancreas, hemocytes and gill. The mRNA expression levels of the EsSOCS6 in hemocytes were significantly up-regulated after the stimulations with lipopolysaccharide (LPS), Aeromonas hydrophila and polyinosinic-polycytidylic acid (poly (I:C)). The mRNA expressions of threonine/serine protein kinase (EsAkt) and EsRelish were dramatically declined after EsSOCS6 was interfered by dsRNA. Collectively, these results demonstrated that EsSOCS6 might regulate the activation of the NF-κB signaling pathway and play an important role in the innate immune responses of E. sinensis.
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Affiliation(s)
- Chen Qu
- Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian 116023, China
| | - Qingsong Xu
- Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian 116023, China
| | - Mengmeng Lu
- Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian 116023, China
| | - Feifei Wang
- Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian 116023, China
| | - Zhaoqun Liu
- Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian 116023, China
| | - Dongyang Liu
- Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian 116023, China
| | - Wen Yang
- Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian 116023, China
| | - Qilin Yi
- Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian 116023, China
| | - Lingling Wang
- Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian 116023, China; Laboratory of Marine Fisheries Science and Food Production Process, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
| | - Linsheng Song
- Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian 116023, China.
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Hoffmann J, Machado D, Terrier O, Pouzol S, Messaoudi M, Basualdo W, Espínola EE, Guillen RM, Rosa-Calatrava M, Picot V, Bénet T, Endtz H, Russomando G, Paranhos-Baccalà G. Viral and bacterial co-infection in severe pneumonia triggers innate immune responses and specifically enhances IP-10: a translational study. Sci Rep 2016; 6:38532. [PMID: 27922126 PMCID: PMC5138590 DOI: 10.1038/srep38532] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 11/10/2016] [Indexed: 12/23/2022] Open
Abstract
Mixed viral and bacterial infections are widely described in community-acquired pneumonia; however, the clinical implications of co-infection on the associated immunopathology remain poorly studied. In this study, microRNA, mRNA and cytokine/chemokine secretion profiling were investigated for human monocyte-derived macrophages infected in-vitro with Influenza virus A/H1N1 and/or Streptococcus pneumoniae. We observed that the in-vitro co-infection synergistically increased interferon-γ-induced protein-10 (CXCL10, IP-10) expression compared to the singly-infected cells conditions. We demonstrated that endogenous miRNA-200a-3p, whose expression was synergistically induced following co-infection, indirectly regulates CXCL10 expression by targeting suppressor of cytokine signaling-6 (SOCS-6), a well-known regulator of the JAK-STAT signaling pathway. Additionally, in a subsequent clinical pilot study, immunomodulators levels were evaluated in samples from 74 children (≤5 years-old) hospitalized with viral and/or bacterial community-acquired pneumonia. Clinically, among the 74 cases of pneumonia, patients with identified mixed-detection had significantly higher (3.6-fold) serum IP-10 levels than those with a single detection (P = 0.03), and were significantly associated with severe pneumonia (P < 0.01). This study demonstrates that viral and bacterial co-infection modulates the JAK-STAT signaling pathway and leads to exacerbated IP-10 expression, which could play a major role in the pathogenesis of pneumonia.
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Affiliation(s)
- Jonathan Hoffmann
- Laboratoire des Pathogènes Émergents, Fondation Mérieux - CIRI - Inserm U1111, Lyon, France
| | - Daniela Machado
- Laboratoire des Pathogènes Émergents, Fondation Mérieux - CIRI - Inserm U1111, Lyon, France
| | - Olivier Terrier
- Virologie et Pathologie Humaine VirPath, CIRI - UCBL1 - Inserm U1111 - CNRS UMR 5308 - ENS de Lyon, Lyon, France
| | - Stephane Pouzol
- Laboratoire des Pathogènes Émergents, Fondation Mérieux - CIRI - Inserm U1111, Lyon, France
| | - Mélina Messaoudi
- Laboratoire des Pathogènes Émergents, Fondation Mérieux - CIRI - Inserm U1111, Lyon, France
| | - Wilma Basualdo
- Hospital General Pediátrico Niños de Acosta Ñu, Ministerio de Salud Pública y Bienestar Social, Paraguay
| | - Emilio E Espínola
- Departamento de Biología Molecular y Biotecnologia, Instituto de Investigaciones en Ciencias de la Salud, Universidad Nacional de Asunción, Paraguay
| | - Rosa M. Guillen
- Departamento de Biología Molecular y Biotecnologia, Instituto de Investigaciones en Ciencias de la Salud, Universidad Nacional de Asunción, Paraguay
| | - Manuel Rosa-Calatrava
- Virologie et Pathologie Humaine VirPath, CIRI - UCBL1 - Inserm U1111 - CNRS UMR 5308 - ENS de Lyon, Lyon, France
| | - Valentina Picot
- Laboratoire des Pathogènes Émergents, Fondation Mérieux - CIRI - Inserm U1111, Lyon, France
| | - Thomas Bénet
- Infection Control and Epidemiology Unit, Edouard Herriot Hospital, Hospices Civils de Lyon, Lyon, France
| | - Hubert Endtz
- Laboratoire des Pathogènes Émergents, Fondation Mérieux - CIRI - Inserm U1111, Lyon, France
| | - Graciela Russomando
- Departamento de Biología Molecular y Biotecnologia, Instituto de Investigaciones en Ciencias de la Salud, Universidad Nacional de Asunción, Paraguay
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Sanders KA, Benton MC, Lea RA, Maltby VE, Agland S, Griffin N, Scott RJ, Tajouri L, Lechner-Scott J. Next-generation sequencing reveals broad down-regulation of microRNAs in secondary progressive multiple sclerosis CD4+ T cells. Clin Epigenetics 2016; 8:87. [PMID: 27570566 PMCID: PMC5002332 DOI: 10.1186/s13148-016-0253-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 08/09/2016] [Indexed: 01/06/2023] Open
Abstract
Background Immunoactivation is less evident in secondary progressive MS (SPMS) compared to relapsing-remitting disease. MicroRNA (miRNA) expression is integral to the regulation of gene expression; determining their impact on immune-related cell functions, especially CD4+ T cells, during disease progression will advance our understanding of MS pathophysiology. This study aimed to compare miRNA profiles of CD4+ T cells from SPMS patients to healthy controls (HC) using whole miRNA transcriptome next-generation sequencing (NGS). Total RNA was extracted from CD4+ T cells and miRNA expression patterns analyzed using Illumina-based small-RNA NGS in 12 SPMS and 12 HC samples. Results were validated in a further cohort of 12 SPMS and 10 HC by reverse transcription quantitative polymerase chain reaction (RT-qPCR). Results The ten most dysregulated miRNAs identified by NGS were selected for qPCR confirmation; five (miR-21-5p, miR-26b-5p, miR-29b-3p, miR-142-3p, and miR-155-5p) were confirmed to be down-regulated in SPMS (p < 0.05). SOCS6 is targeted by eight of these ten miRNAs. Consistent with this, SOCS6 expression is up-regulated in SPMS CD4+ T cells (p < 0.05). This is of particular interest as SOCS6 has previously been shown to act as a negative regulator of T cell activation. Conclusions Ninety-seven percent of miRNA candidates identified by NGS were down-regulated in SPMS. The down-regulation of miRNAs and increased expression of SOCS6 in SPMS CD4+ T cells may contribute to reduced immune system activity in progressive MS. Electronic supplementary material The online version of this article (doi:10.1186/s13148-016-0253-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Katherine A Sanders
- Faculty of Health Sciences and Medicine, Bond University, Robina, Queensland 4226 Australia ; Centre for Information-Based Medicine, Hunter Medical Research Institute, Newcastle, New South Wales 2305 Australia ; School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales 2308 Australia
| | - Miles C Benton
- Institute of Health and Biomedical Innovation, Genomics Research Centre, Brisbane, Queensland 4059 Australia
| | - Rod A Lea
- Institute of Health and Biomedical Innovation, Genomics Research Centre, Brisbane, Queensland 4059 Australia ; Centre for Information-Based Medicine, Hunter Medical Research Institute, Newcastle, New South Wales 2305 Australia
| | - Vicki E Maltby
- Centre for Information-Based Medicine, Hunter Medical Research Institute, Newcastle, New South Wales 2305 Australia ; School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales 2308 Australia
| | - Susan Agland
- Department of Neurology, Division of Medicine, John Hunter Hospital, Locked Bag 1, Hunter Region Mail Centre, Newcastle, NSW 2310 Australia
| | - Nathan Griffin
- Centre for Information-Based Medicine, Hunter Medical Research Institute, Newcastle, New South Wales 2305 Australia ; School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales 2308 Australia
| | - Rodney J Scott
- Centre for Information-Based Medicine, Hunter Medical Research Institute, Newcastle, New South Wales 2305 Australia ; School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales 2308 Australia ; Division of Molecular Genetics, Pathology North, Newcastle, New South Wales 2305 Australia
| | - Lotti Tajouri
- Faculty of Health Sciences and Medicine, Bond University, Robina, Queensland 4226 Australia
| | - Jeannette Lechner-Scott
- Centre for Information-Based Medicine, Hunter Medical Research Institute, Newcastle, New South Wales 2305 Australia ; Department of Neurology, Division of Medicine, John Hunter Hospital, Locked Bag 1, Hunter Region Mail Centre, Newcastle, NSW 2310 Australia ; School of Medicine and Public Health, University of Newcastle, Newcastle, New South Wales 2308 Australia
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Loss of PTPRM associates with the pathogenic development of colorectal adenoma-carcinoma sequence. Sci Rep 2015; 5:9633. [PMID: 25910225 PMCID: PMC5386118 DOI: 10.1038/srep09633] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Accepted: 03/10/2015] [Indexed: 11/09/2022] Open
Abstract
Identification and functional analysis of genes from genetically altered chromosomal regions would suggest new molecular targets for cancer diagnosis and treatment. Here we performed a genome-wide analysis of chromosomal copy number alterations (CNAs) in matching sets of colon mucosa-adenoma-carcinoma samples using high-throughput oligonucleotide microarray analysis. In silico analysis of NCBI GEO and TCGA datasets allowed us to uncover the significantly altered genes (p ≤ 0.001) associated with the identified CNAs. We performed quantitative PCR analysis of the genomic and complementary DNA derived from primary mucosa, adenoma, and carcinoma samples, and confirmed the recurrent loss and down-regulation of PTPRM in colon adenomas and carcinomas. Functional characterization demonstrated that PTPRM negatively regulates cell growth and colony formation, whereas loss of PTPRM promotes oncogenic cell growth. We further showed that, in accordance to Knudson's two-hit hypothesis, inactivation of PTPRM in colon cancer was mainly attributed to loss of heterozygosity and promoter hypermethylation. Taken together, this study demonstrates a putative tumor suppressive role for PTPRM and that genetic and epigenetic alterations of PTPRM may contribute to early step of colorectal tumorigenesis.
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Kabir NN, Sun J, Rönnstrand L, Kazi JU. SOCS6 is a selective suppressor of receptor tyrosine kinase signaling. Tumour Biol 2014; 35:10581-9. [PMID: 25172101 DOI: 10.1007/s13277-014-2542-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Accepted: 08/21/2014] [Indexed: 01/17/2023] Open
Abstract
The suppressors of cytokine signaling (SOCS) are well-known negative regulators of cytokine receptor signaling. SOCS6 is one of eight members of the SOCS family of proteins. Similar to other SOCS proteins, SOCS6 consists of an uncharacterized extended N-terminal region followed by an SH2 domain and a SOCS box. Unlike other SOCS proteins, SOCS6 is mainly involved in negative regulation of receptor tyrosine kinase signaling. SOCS6 is widely expressed in many tissues and is found to be downregulated in many cancers including colorectal cancer, gastric cancer, lung cancer, ovarian cancer, stomach cancer, thyroid cancer, hepatocellular carcinoma, and pancreatic cancer. SOCS6 is involved in negative regulation of receptor signaling by increasing degradation mediated by ubiquitination of receptors or substrate proteins and induces apoptosis by targeting mitochondrial proteins. Therefore, SOCS6 turns out as an important regulator of survival signaling and its activity is required for controlling receptor tyrosine kinase signaling.
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Affiliation(s)
- Nuzhat N Kabir
- Laboratory of Computational Biochemistry, KN Biomedical Research Institute, Barisal, Bangladesh
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Identification of SOCS2 and SOCS6 as biomarkers in human colorectal cancer. Br J Cancer 2014; 111:726-35. [PMID: 25025962 PMCID: PMC4134506 DOI: 10.1038/bjc.2014.377] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 06/05/2014] [Accepted: 06/12/2014] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Over the past years, some members of the family of suppressor of cytokine signalling (SOCS) proteins have emerged as potential tumour suppressors. This study aimed at investigating the clinical significance of SOCS proteins in colorectal carcinoma (CRC). METHODS We integrated publicly available microarray expression data on CRC in humans, analysed the expression pattern of SOCSs and assessed the predictive power of SOCS2 and SOCS6 for diagnostic purposes by generating receiver operating characteristic curves. Using laser microdissected patient material we assessed SOCS expression on RNA and protein levels as well as their methylation status in an independent CRC patient cohort. Finally, we investigated the prognostic value of SOCS2 and SOCS6. RESULTS The meta-analysis as well as the independent patient cohort analysis reveal a stage-independent downregulation of SOCS2 and SOCS6 and identify both molecules as diagnostic biomarkers for CRC. We demonstrate a different methylation pattern within the SOCS2 promoter between tumour tissue and normal control tissue in 25% of CRC patients. Furthermore, early CRC stage patients with low expression of SOCS2 display significantly shorter disease-free survival. CONCLUSIONS Our data offers evidence that SOCS2 and SOCS6 levels are reduced in CRC and may serve as diagnostic biomarkers for CRC patients.
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Zhang X, Wang J, Cheng J, Ding S, Li M, Sun S, Zhang L, Liu S, Chen X, Zhuang H, Lu F. An integrated analysis of SOCS1 down-regulation in HBV infection-related hepatocellular carcinoma. J Viral Hepat 2014; 21:264-71. [PMID: 23941364 PMCID: PMC4229024 DOI: 10.1111/jvh.12137] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Persistent inflammation together with genetic/epigenetic aberrations is strongly associated with chronic Hepatitis B virus (HBV) infection-related hepatocarcinogenesis. Here, we investigated the alterations of the suppressor of cytokine signalling (SOCS) family genes in HBV-related hepatocellular carcinoma (HCC). A total of 116 patients with HCC were enrolled in this study. The methylation statuses of SOCS1-7 and CISH genes were quantitatively measured and clinicopathological significance of SOCS1 methylation was statistically analysed. The gene copy number variation was assayed by aCGH. Luciferase reporter assay and Western blot were used to detect the involvement of SOCS1 in p53 signalling. We found high frequencies of SOCS1 gene hypermethylation in both tumour (56.03%) and adjacent nontumour tissues (54.31%), but tumour tissues exhibited increased methylation intensity (24.01% vs 13.11%, P < 0.0001), particularly in patients with larger tumour size or cirrhosis background (P < 0.0001). In addition, the frequency and intensity of SOCS1 hypermethylation in tumour tissues were both significantly higher than those in nontumour tissues in male gender patients and in patients ≥45 years old (P = 0.0214 and P < 0.0001, P = 0.0232 and P < 0.0001, respectively). SOCS1 gene deletion was found in 8 of 25 aCGH assayed tumour specimens, which was associated with lower SOCS1 mRNA expression (P = 0.0448). Furthermore, ectopic SOCS1 overexpression could activate the p53 signalling pathway in HCC cell lines. Hypermethylation of SOCS2-7 and CISH genes was seldom found in HCC. Our results suggested that the gene loss and epigenetic silencing of SOCS1 were strongly associated with HBV-related HCC.
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Affiliation(s)
- X Zhang
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science CenterBeijing, China
| | - J Wang
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science CenterBeijing, China
| | - J Cheng
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science CenterBeijing, China
| | - S Ding
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science CenterBeijing, China
| | - M Li
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science CenterBeijing, China
| | - S Sun
- College of Pharmacy, Harbin Medical University-DaqingDaqing, China
| | - L Zhang
- Department of Hepatopancreatobiliary Surgery, Henan Tumor HospitalZhengzhou, China
| | - S Liu
- Beijing Artificial Liver Treatment & Training Center, Beijing Youan Hospital, Capital Medical UniversityBeijing, China
| | - X Chen
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science CenterBeijing, China,Correspondence: Fengmin Lu, Xiangmei Chen, Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, 38 Xueyuan Road, Beijing 100191, China. E-mail: ;
| | - H Zhuang
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science CenterBeijing, China
| | - F Lu
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science CenterBeijing, China,Correspondence: Fengmin Lu, Xiangmei Chen, Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, 38 Xueyuan Road, Beijing 100191, China. E-mail: ;
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Suppressor of cytokine signaling 6 (SOCS6) promotes mitochondrial fission via regulating DRP1 translocation. Cell Death Differ 2012; 20:139-53. [PMID: 22955947 PMCID: PMC3524647 DOI: 10.1038/cdd.2012.106] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Mitochondria are highly motile organelles that constantly undergo fission and fusion. Impairment of mitochondrial dynamics is associated with mitochondrial dysfunction and is frequently linked to the pathogenesis of neurodegenerative diseases and cancer. We have previously shown that biallelic inactivation of the suppressor of cytokine signaling 6 (SOCS6) gene is a frequent event in human gastric cancer. In this study, we recapitulated the event of SOCS6 loss using a Lentivirus-based knockdown approach, and demonstrated the linkage between SOCS6 depletion and the suppression of programmed cell death. SOCS6 promotes intrinsic apoptosis, with increased Bax conformational change, mitochondrial targeting, and oligomerization. Most importantly, SOCS6 is targeted to mitochondria and induces mitochondrial fragmentation mediated through an increase in DRP1 fission activity. Here, we show that SOCS6 forms complex with DRP1 and the mitochondrial phosphatase PGAM5, attenuates DRP1 phosphorylation, and promotes DRP1 mitochondrial translocation. Based on mutation analyses, SOCS6-mediated apoptosis is tightly coupled to its ability to induce mitochondrial fission. This study demonstrates an important role for SOCS6 in modulating mitochondrial dynamics and apoptosis.
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Sriram KB, Larsen JE, Savarimuthu Francis SM, Wright CM, Clarke BE, Duhig EE, Brown KM, Hayward NK, Yang IA, Bowman RV, Fong KM. Array-comparative genomic hybridization reveals loss of SOCS6 is associated with poor prognosis in primary lung squamous cell carcinoma. PLoS One 2012; 7:e30398. [PMID: 22363434 PMCID: PMC3281847 DOI: 10.1371/journal.pone.0030398] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Accepted: 12/15/2011] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Primary tumor recurrence commonly occurs after surgical resection of lung squamous cell carcinoma (SCC). Little is known about the genes driving SCC recurrence. METHODS We used array comparative genomic hybridization (aCGH) to identify genes affected by copy number alterations that may be involved in SCC recurrence. Training and test sets of resected primary lung SCC were assembled. aCGH was used to determine genomic copy number in a training set of 62 primary lung SCCs (28 with recurrence and 34 with no evidence of recurrence) and the altered copy number of candidate genes was confirmed by quantitative PCR (qPCR). An independent test set of 72 primary lung SCCs (20 with recurrence and 52 with no evidence of recurrence) was used for biological validation. mRNA expression of candidate genes was studied using qRT-PCR. Candidate gene promoter methylation was evaluated using methylation microarrays and Sequenom EpiTYPER analysis. RESULTS 18q22.3 loss was identified by aCGH as being significantly associated with recurrence (p = 0.038). Seven genes within 18q22.3 had aCGH copy number loss associated with recurrence but only SOCS6 copy number was both technically replicated by qPCR and biologically validated in the test set. SOCS6 copy number loss correlated with reduced mRNA expression in the study samples and in the samples with copy number loss, there was a trend for increased methylation, albeit non-significant. Overall survival was significantly poorer in patients with SOCS6 loss compared to patients without SOCS6 loss in both the training (30 vs. 43 months, p = 0.023) and test set (27 vs. 43 months, p = 0.010). CONCLUSION Reduced copy number and mRNA expression of SOCS6 are associated with disease recurrence in primary lung SCC and may be useful prognostic biomarkers.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Carcinoma, Squamous Cell/genetics
- Carcinoma, Squamous Cell/surgery
- Chromosomes, Human/genetics
- Chromosomes, Human, Pair 18/genetics
- Comparative Genomic Hybridization
- DNA Copy Number Variations/genetics
- DNA Methylation/genetics
- Female
- Follow-Up Studies
- Gene Dosage/genetics
- Gene Expression Regulation, Neoplastic
- Genes, Neoplasm/genetics
- Genetic Association Studies
- Genome, Human/genetics
- Humans
- Kaplan-Meier Estimate
- Lung Neoplasms/genetics
- Lung Neoplasms/surgery
- Male
- Middle Aged
- Phenotype
- Polymerase Chain Reaction
- Prognosis
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Recurrence
- Reproducibility of Results
- Suppressor of Cytokine Signaling Proteins/genetics
- Tumor Cells, Cultured
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Affiliation(s)
- Krishna B Sriram
- School of Medicine, The University of Queensland, Brisbane, Queensland, Australia.
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