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Bojmar L, Zambirinis CP, Hernandez JM, Chakraborty J, Shaashua L, Kim J, Johnson KE, Hanna S, Askan G, Burman J, Ravichandran H, Zheng J, Jolissaint JS, Srouji R, Song Y, Choubey A, Kim HS, Cioffi M, van Beek E, Sigel C, Jessurun J, Velasco Riestra P, Blomstrand H, Jönsson C, Jönsson A, Lauritzen P, Buehring W, Ararso Y, Hernandez D, Vinagolu-Baur JP, Friedman M, Glidden C, Firmenich L, Lieberman G, Mejia DL, Nasar N, Mutvei AP, Paul DM, Bram Y, Costa-Silva B, Basturk O, Boudreau N, Zhang H, Matei IR, Hoshino A, Kelsen D, Sagi I, Scherz A, Scherz-Shouval R, Yarden Y, Oren M, Egeblad M, Lewis JS, Keshari K, Grandgenett PM, Hollingsworth MA, Rajasekhar VK, Healey JH, Björnsson B, Simeone DM, Tuveson DA, Iacobuzio-Donahue CA, Bromberg J, Vincent CT, O'Reilly EM, DeMatteo RP, Balachandran VP, D'Angelica MI, Kingham TP, Allen PJ, Simpson AL, Elemento O, Sandström P, Schwartz RE, Jarnagin WR, Lyden D. Multi-parametric atlas of the pre-metastatic liver for prediction of metastatic outcome in early-stage pancreatic cancer. Nat Med 2024; 30:2170-2180. [PMID: 38942992 DOI: 10.1038/s41591-024-03075-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 05/17/2024] [Indexed: 06/30/2024]
Abstract
Metastasis occurs frequently after resection of pancreatic cancer (PaC). In this study, we hypothesized that multi-parametric analysis of pre-metastatic liver biopsies would classify patients according to their metastatic risk, timing and organ site. Liver biopsies obtained during pancreatectomy from 49 patients with localized PaC and 19 control patients with non-cancerous pancreatic lesions were analyzed, combining metabolomic, tissue and single-cell transcriptomics and multiplex imaging approaches. Patients were followed prospectively (median 3 years) and classified into four recurrence groups; early (<6 months after resection) or late (>6 months after resection) liver metastasis (LiM); extrahepatic metastasis (EHM); and disease-free survivors (no evidence of disease (NED)). Overall, PaC livers exhibited signs of augmented inflammation compared to controls. Enrichment of neutrophil extracellular traps (NETs), Ki-67 upregulation and decreased liver creatine significantly distinguished those with future metastasis from NED. Patients with future LiM were characterized by scant T cell lobular infiltration, less steatosis and higher levels of citrullinated H3 compared to patients who developed EHM, who had overexpression of interferon target genes (MX1 and NR1D1) and an increase of CD11B+ natural killer (NK) cells. Upregulation of sortilin-1 and prominent NETs, together with the lack of T cells and a reduction in CD11B+ NK cells, differentiated patients with early-onset LiM from those with late-onset LiM. Liver profiles of NED closely resembled those of controls. Using the above parameters, a machine-learning-based model was developed that successfully predicted the metastatic outcome at the time of surgery with 78% accuracy. Therefore, multi-parametric profiling of liver biopsies at the time of PaC diagnosis may determine metastatic risk and organotropism and guide clinical stratification for optimal treatment selection.
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Affiliation(s)
- Linda Bojmar
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Constantinos P Zambirinis
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
- Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Division of Surgical Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Jonathan M Hernandez
- Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Thoracic and Gastrointestinal Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Jayasree Chakraborty
- Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- David M. Rubenstein Center for Pancreatic Cancer Research, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Lee Shaashua
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - Junbum Kim
- Department of Physiology and Biophysics, Institute for Computational Biomedicine, Weill Cornell Medicine, New York, NY, USA
| | - Kofi Ennu Johnson
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - Samer Hanna
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - Gokce Askan
- David M. Rubenstein Center for Pancreatic Cancer Research, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Jonas Burman
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Hiranmayi Ravichandran
- Department of Physiology and Biophysics, Institute for Computational Biomedicine, Weill Cornell Medicine, New York, NY, USA
- Caryl and Israel Englander Institute for Precision Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Jian Zheng
- Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Joshua S Jolissaint
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
- Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Rami Srouji
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
- Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Yi Song
- Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ankur Choubey
- Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Han Sang Kim
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - Michele Cioffi
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - Elke van Beek
- Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Carlie Sigel
- David M. Rubenstein Center for Pancreatic Cancer Research, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Jose Jessurun
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, USA
| | | | - Hakon Blomstrand
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
- Department of Clinical Pathology, Linköping University, Linköping, Sweden
| | - Carolin Jönsson
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Anette Jönsson
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Pernille Lauritzen
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - Weston Buehring
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - Yonathan Ararso
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - Dylanne Hernandez
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - Jessica P Vinagolu-Baur
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - Madison Friedman
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - Caroline Glidden
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - Laetitia Firmenich
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - Grace Lieberman
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - Dianna L Mejia
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - Naaz Nasar
- Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Anders P Mutvei
- Department of Laboratory Medicine, Division of Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Doru M Paul
- Division of Hematology and Medical Oncology, Department of Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Yaron Bram
- Division of Gastroenterology & Hepatology, Weill Cornell Medicine, New York, NY, USA
| | - Bruno Costa-Silva
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - Olca Basturk
- David M. Rubenstein Center for Pancreatic Cancer Research, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Nancy Boudreau
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - Haiying Zhang
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - Irina R Matei
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - Ayuko Hoshino
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA
| | - David Kelsen
- David M. Rubenstein Center for Pancreatic Cancer Research, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Irit Sagi
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - Avigdor Scherz
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Ruth Scherz-Shouval
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Yosef Yarden
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - Moshe Oren
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Mikala Egeblad
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, USA
| | - Jason S Lewis
- Radiology and Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Weill Cornell Medical College, New York, NY, USA
| | - Kayvan Keshari
- David M. Rubenstein Center for Pancreatic Cancer Research, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Radiology and Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Paul M Grandgenett
- Eppley Institute for Research in Cancer and Allied Diseases, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA
| | - Michael A Hollingsworth
- Eppley Institute for Research in Cancer and Allied Diseases, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA
| | - Vinagolu K Rajasekhar
- Orthopedic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - John H Healey
- Orthopedic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Bergthor Björnsson
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Diane M Simeone
- Perlmutter Cancer Center, New York University Langone Health, New York, NY, USA
| | | | - Christine A Iacobuzio-Donahue
- David M. Rubenstein Center for Pancreatic Cancer Research, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Jaqueline Bromberg
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Medicine, Weill Cornell Medicine, New York, NY, USA
| | - C Theresa Vincent
- Department of Laboratory Medicine, Division of Pathology, Karolinska Institutet, Stockholm, Sweden
- Department of Microbiology, New York University Grossman School of Medicine, New York, NY, USA
| | - Eileen M O'Reilly
- David M. Rubenstein Center for Pancreatic Cancer Research, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Division of Hematology and Medical Oncology, Department of Medicine, Weill Cornell Medicine, New York, NY, USA
- Weill Cornell Medical College, New York, NY, USA
| | - Ronald P DeMatteo
- Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Vinod P Balachandran
- Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- David M. Rubenstein Center for Pancreatic Cancer Research, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Immuno-Oncology Service, Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Michael I D'Angelica
- Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- David M. Rubenstein Center for Pancreatic Cancer Research, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - T Peter Kingham
- Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- David M. Rubenstein Center for Pancreatic Cancer Research, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Peter J Allen
- Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Amber L Simpson
- Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Olivier Elemento
- Department of Physiology and Biophysics, Institute for Computational Biomedicine, Weill Cornell Medicine, New York, NY, USA
- Caryl and Israel Englander Institute for Precision Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Per Sandström
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Robert E Schwartz
- Division of Gastroenterology & Hepatology, Weill Cornell Medicine, New York, NY, USA
- Department of Biomedical Engineering, Cornell University, Ithaca, NY, USA
| | - William R Jarnagin
- Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- David M. Rubenstein Center for Pancreatic Cancer Research, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - David Lyden
- Departments of Pediatrics and Cell and Developmental Biology, Children's Cancer and Blood Foundation Laboratories, Drukier Institute for Children's Health, Meyer Cancer Center Weill Cornell Medicine, New York, NY, USA.
- David M. Rubenstein Center for Pancreatic Cancer Research, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
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Madakashira BP, Magnani E, Ranjan S, Sadler KC. DNA hypomethylation activates Cdk4/6 and Atr to induce DNA replication and cell cycle arrest to constrain liver outgrowth in zebrafish. Nucleic Acids Res 2024; 52:3069-3087. [PMID: 38321933 PMCID: PMC11014291 DOI: 10.1093/nar/gkae031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 12/12/2023] [Accepted: 01/16/2024] [Indexed: 02/08/2024] Open
Abstract
Coordinating epigenomic inheritance and cell cycle progression is essential for organogenesis. UHRF1 connects these functions during development by facilitating maintenance of DNA methylation and cell cycle progression. Here, we provide evidence resolving the paradoxical phenotype of uhrf1 mutant zebrafish embryos which have activation of pro-proliferative genes and increased number of hepatocytes in S-phase, but the liver fails to grow. We uncover decreased Cdkn2a/b and persistent Cdk4/6 activation as the mechanism driving uhrf1 mutant hepatocytes into S-phase. This induces replication stress, DNA damage and Atr activation. Palbociclib treatment of uhrf1 mutants prevented aberrant S-phase entry, reduced DNA damage, and rescued most cellular and developmental phenotypes, but it did not rescue DNA hypomethylation, transposon expression or the interferon response. Inhibiting Atr reduced DNA replication and increased liver size in uhrf1 mutants, suggesting that Atr activation leads to dormant origin firing and prevents hepatocyte proliferation. Cdkn2a/b was downregulated pro-proliferative genes were also induced in a Cdk4/6 dependent fashion in the liver of dnmt1 mutants, suggesting DNA hypomethylation as a mechanism of Cdk4/6 activation during development. This shows that the developmental defects caused by DNA hypomethylation are attributed to persistent Cdk4/6 activation, DNA replication stress, dormant origin firing and cell cycle inhibition.
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Zhang Y, Fan Y, Hu H, Zhang X, Wang Z, Wu Z, Wang L, Yu X, Song X, Xiang P, Zhang X, Wang T, Tan S, Li C, Gao L, Liang X, Li S, Li N, Yue X, Ma C. ZHX2 emerges as a negative regulator of mitochondrial oxidative phosphorylation during acute liver injury. Nat Commun 2023; 14:7527. [PMID: 37980429 PMCID: PMC10657347 DOI: 10.1038/s41467-023-43439-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 11/09/2023] [Indexed: 11/20/2023] Open
Abstract
Mitochondria dysfunction contributes to acute liver injuries, and mitochondrial regulators, such as PGC-1α and MCJ, affect liver regeneration. Therefore, identification of mitochondrial modulators may pave the way for developing therapeutic strategies. Here, ZHX2 is identified as a mitochondrial regulator during acute liver injury. ZHX2 both transcriptionally inhibits expression of several mitochondrial electron transport chain genes and decreases PGC-1α stability, leading to reduction of mitochondrial mass and OXPHOS. Loss of Zhx2 promotes liver recovery by increasing mitochondrial OXPHOS in mice with partial hepatectomy or CCl4-induced liver injury, and inhibition of PGC-1α or electron transport chain abolishes these effects. Notably, ZHX2 expression is higher in liver tissues from patients with drug-induced liver injury and is negatively correlated with mitochondrial mass marker TOM20. Delivery of shRNA targeting Zhx2 effectively protects mice from CCl4-induced liver injury. Together, our data clarify ZHX2 as a negative regulator of mitochondrial OXPHOS and a potential target for developing strategies for improving liver recovery after acute injuries.
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Affiliation(s)
- Yankun Zhang
- Key Laboratory for Experimental Teratology of Ministry of Education, School of Basic Medical Sciences, Qilu Hospital, Cheeloo Medical College of Shandong University, Jinan, China
| | - Yuchen Fan
- Department of Hepatology, Qilu Hospital of Shandong University, Jinan, China
| | - Huili Hu
- Institute of Molecular Medicine and Genetics, School of Basic Medical Sciences, Shandong University, Jinan, China
| | - Xiaohui Zhang
- Institute of Molecular Medicine and Genetics, School of Basic Medical Sciences, Shandong University, Jinan, China
| | - Zehua Wang
- Key Laboratory for Experimental Teratology of Ministry of Education, School of Basic Medical Sciences, Qilu Hospital, Cheeloo Medical College of Shandong University, Jinan, China
| | - Zhuanchang Wu
- Key Laboratory for Experimental Teratology of Ministry of Education, School of Basic Medical Sciences, Qilu Hospital, Cheeloo Medical College of Shandong University, Jinan, China
| | - Liyuan Wang
- Key Laboratory for Experimental Teratology of Ministry of Education, School of Basic Medical Sciences, Qilu Hospital, Cheeloo Medical College of Shandong University, Jinan, China
| | - Xiangguo Yu
- Key Laboratory for Experimental Teratology of Ministry of Education, School of Basic Medical Sciences, Qilu Hospital, Cheeloo Medical College of Shandong University, Jinan, China
| | - Xiaojia Song
- Key Laboratory for Experimental Teratology of Ministry of Education, School of Basic Medical Sciences, Qilu Hospital, Cheeloo Medical College of Shandong University, Jinan, China
| | - Peng Xiang
- Key Laboratory for Experimental Teratology of Ministry of Education, School of Basic Medical Sciences, Qilu Hospital, Cheeloo Medical College of Shandong University, Jinan, China
| | - Xiaodong Zhang
- Key Laboratory for Experimental Teratology of Ministry of Education, School of Basic Medical Sciences, Qilu Hospital, Cheeloo Medical College of Shandong University, Jinan, China
| | - Tixiao Wang
- Key Laboratory for Experimental Teratology of Ministry of Education, School of Basic Medical Sciences, Qilu Hospital, Cheeloo Medical College of Shandong University, Jinan, China
| | - Siyu Tan
- Key Laboratory for Experimental Teratology of Ministry of Education, School of Basic Medical Sciences, Qilu Hospital, Cheeloo Medical College of Shandong University, Jinan, China
| | - Chunyang Li
- Key Laboratory for Experimental Teratology of Ministry of Education, School of Basic Medical Sciences, Qilu Hospital, Cheeloo Medical College of Shandong University, Jinan, China
- Department of Histology and Embryology, School of Basic Medical Sciences, Shandong University, Jinan, China
| | - Lifen Gao
- Key Laboratory for Experimental Teratology of Ministry of Education, School of Basic Medical Sciences, Qilu Hospital, Cheeloo Medical College of Shandong University, Jinan, China
| | - Xiaohong Liang
- Key Laboratory for Experimental Teratology of Ministry of Education, School of Basic Medical Sciences, Qilu Hospital, Cheeloo Medical College of Shandong University, Jinan, China
| | - Shuijie Li
- College of Pharmacy, Harbin Medical University, Harbin, China
| | - Nailin Li
- Department of Medicine-Solna, Cardiovascular Medicine Unit, Karolinska Institute, Stockholm, Sweden
| | - Xuetian Yue
- Key Laboratory for Experimental Teratology of Ministry of Education, School of Basic Medical Sciences, Qilu Hospital, Cheeloo Medical College of Shandong University, Jinan, China.
- Department of Cell Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China.
| | - Chunhong Ma
- Key Laboratory for Experimental Teratology of Ministry of Education, School of Basic Medical Sciences, Qilu Hospital, Cheeloo Medical College of Shandong University, Jinan, China.
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4
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Zhu Y, Guo Y, Liu H, Zhou A, Fan Z, Zhu X, Miao X. Ubiquitin specific peptidase 47 contributes to liver regeneration. Life Sci 2023; 329:121967. [PMID: 37487274 DOI: 10.1016/j.lfs.2023.121967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/09/2023] [Accepted: 07/18/2023] [Indexed: 07/26/2023]
Abstract
AIMS Hepatocytes resume proliferation following liver injuries to compensate for the loss of liver mass. Robust liver regeneration is an intrinsic and pivotal process that facilitates restoration of liver anatomy and function. In the present study we investigated the role of ubiquitin-specific peptidase 47 (USP47) in liver regeneration. METHODS AND MATERIALS Proliferation of hepatocytes was evaluated by Ki67 staining in vivo and EdU incorporation in vitro. DNA-protein interaction was evaluated by chromatin immunoprecipitation (ChIP). RESULTS USP47 expression was up-regulated in hepatocytes isolated from mice subjected to partial hepatectomy (PHx) or exposed to HGF treatment. Ingenuity pathway analysis revealed E2F1 as a primary regulator of USP47 transcription. Reporter assay and ChIP assay confirmed that E2F1 directly bound to the USP47 promoter and activated USP47 transcription. Consistently, E2F1 knockdown abrogated USP47 induction by HGF. Compared to the wild type littermates, USP47 knockout mice displayed compromised liver regeneration following PHx. In addition, USP47 inhibition by a small-molecule compound impaired liver regeneration in mice. On the contrary, USP47 over-expression enhanced proliferation of hepatocytes in vitro and promoted liver regeneration in mice. Importantly, a positive correlation between USP47 expression and hepatocyte proliferation was identified in patients with acute liver failure (ALF). SIGNIFICANCE Our data suggest that USP47, transcriptionally activated by E2F1, plays an essential role in liver regeneration.
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Affiliation(s)
- Yuwen Zhu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Translational Medicine, and Center for Experimental Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Yan Guo
- Institute of Biomedical Research and College of Life Sciences, Liaocheng University, Liaocheng, China
| | - Hong Liu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Translational Medicine, and Center for Experimental Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Anqi Zhou
- Institute of Biomedical Research and College of Life Sciences, Liaocheng University, Liaocheng, China
| | - Zhiwen Fan
- Department of Pathology, Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Xi Zhu
- Department of Infectious Diseases, The First Peoples' Hospital of Kunshan, Kunshan, China.
| | - Xiulian Miao
- Institute of Biomedical Research and College of Life Sciences, Liaocheng University, Liaocheng, China.
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5
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Ghafouri-Fard S, Askari A, Behzad Moghadam K, Hussen BM, Taheri M, Samadian M. A review on the role of ZEB1-AS1 in human disorders. Pathol Res Pract 2023; 245:154486. [PMID: 37120907 DOI: 10.1016/j.prp.2023.154486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/19/2023] [Accepted: 04/24/2023] [Indexed: 05/02/2023]
Abstract
ZEB1 Antisense RNA 1 (ZEB1-AS1) is a type of RNA characterized as long non-coding RNA (lncRNA). This lncRNA has important regulatory roles on its related gene, Zinc Finger E-Box Binding Homeobox 1 (ZEB1). In addition, role of ZEB1-AS1 has been approved in diverse malignancies such as colorectal cancer, breast cancer, glioma, hepatocellular carcinoma and gastric cancer. ZEB1-AS1 serves as a sponge for a number of microRNAs, namely miR-577, miR-335-5p, miR-101, miR-505-3p, miR-455-3p, miR-205, miR-23a, miR-365a-3p, miR-302b, miR-299-3p, miR-133a-3p, miR-200a, miR-200c, miR-342-3p, miR-214, miR-149-3p and miR-1224-5p. In addition to malignant conditions, ZEB1-AS1 has functional role in non-malignant conditions like diabetic nephropathy, diabetic lung, arthrosclerosis, Chlamydia trachomatis infection, pulmonary fibrosis and ischemic stroke. This review outlines different molecular mechanisms of ZEB1-AS1 in a variety of disorders and highlights its importance in their pathogenesis.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Arian Askari
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Erbil, Iraq
| | - Mohammad Taheri
- Institue of Human Genetics, Jena University Hospital, Jena, Germany; Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Mohammad Samadian
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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6
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Xiao M, Wang J, Chen Y. E2F2 Promotes Wound Healing of Diabetic Foot Ulcer by Regulating CDCA7L Transcription. Exp Clin Endocrinol Diabetes 2023; 131:162-172. [PMID: 36893788 DOI: 10.1055/a-1989-1918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
OBJECTIVE The E2F2 transcription factor can accelerate cell proliferation and wound healing. However, its mechanism of action in a diabetic foot ulcer (DFU) remains unclear. Therefore, this study explores the influence of E2F2 on wound healing in DFU by examining cell division cycle-associated 7-like (CDCA7L) expression. METHODS CDCA7L and E2F2 expression in DFU tissues were analyzed with databases. CDCA7L and E2F2 expression were altered in human umbilical vein endothelial cells (HUVECs) and spontaneously transformed human keratinocyte cell culture (HaCaT) cells. Cell viability, migration, colony formation, and angiogenesis were evaluated. Binding of E2F2 to the CDCA7L promoter was examined. Subsequently, a diabetes mellitus (DM) mouse model was established and treated with full-thickness excision followed by CDCA7L overexpression. Wound healing in these mice was observed and recorded, and vascular endothelial growth factor receptor 2 (VEGFR2) and hematopoietic progenitor cell antigen CD34 (CD34) expression were determined. E2F2 and CDCA7L expression levels in cells and mice were evaluated. The expression of growth factors was tested. RESULTS CDCA7L expression was downregulated in DFU tissues and wound tissues from DM mice. Mechanistically, E2F2 bound to the CDCA7L promoter to upregulate CDCA7L expression. E2F2 overexpression enhanced viability, migration, and growth factor expression in HaCaT cells and HUVECs, and augmented HUVEC angiogenesis and HaCaT cell proliferation, which was nullified by silencing CDCA7L. In DM mice, CDCA7L overexpression facilitated wound healing and elevated the expression level of growth factors. CONCLUSIONS E2F2 facilitated cell proliferation and migration and fostered wound healing in DFU cells through binding to the CDCA7L promoter.
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Affiliation(s)
- Meimei Xiao
- Department of Hand and Foot Microsurgery, The Affiliated Nanhua Hospital, Hengyang Medical College, University of South China, Hengyang, Hunan, P.R. China
| | - Jiusong Wang
- Department of Hand and Foot Microsurgery, The Affiliated Nanhua Hospital, Hengyang Medical College, University of South China, Hengyang, Hunan, P.R. China
| | - Yanming Chen
- Department of Hand and Foot Microsurgery, The Affiliated Nanhua Hospital, Hengyang Medical College, University of South China, Hengyang, Hunan, P.R. China
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7
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Wang L, Chen Y, Chen R, Mao F, Sun Z, Liu X. Risk modeling of single-cell transcriptomes reveals the heterogeneity of immune infiltration in hepatocellular carcinoma. J Biol Chem 2023; 299:102948. [PMID: 36708920 PMCID: PMC10011506 DOI: 10.1016/j.jbc.2023.102948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 01/20/2023] [Accepted: 01/23/2023] [Indexed: 01/26/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the most common primary hepatic malignancies. E2F transcription factors play an important role in the tumorigenesis and progression of HCC, mainly through the RB/E2F pathway. Prognostic models for HCC based on gene signatures have been developed rapidly in recent years; however, their discriminating ability at the single-cell level remains elusive, which could reflect the underlying mechanisms driving the sample bifurcation. In this study, we constructed and validated a predictive model based on E2F expression, successfully stratifying patients with HCC into two groups with different survival risks. Then we used a single-cell dataset to test the discriminating ability of the predictive model on infiltrating T cells, demonstrating remarkable cellular heterogeneity as well as altered cell fates. We identified distinct cell subpopulations with diverse molecular characteristics. We also found that the distribution of cell subpopulations varied considerably across onset stages among patients, providing a fundamental basis for patient-oriented precision evaluation. Moreover, single-sample gene set enrichment analysis revealed that subsets of CD8+ T cells with significantly different cell adhesion levels could be associated with different patterns of tumor cell dissemination. Therefore, our findings linked the conventional prognostic gene signature to the immune microenvironment and cellular heterogeneity at the single-cell level, thus providing deeper insights into the understanding of HCC tumorigenesis.
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Affiliation(s)
- Lu Wang
- Key Laboratory of Developmental Genes and Human Diseases, School of Life Science and Technology, Southeast University, Nanjing, Jiangsu, China
| | - Yifan Chen
- Institute of Medical Innovation and Research, Peking University Third Hospital, Beijing, China
| | - Rao Chen
- Department of Sport Medicine, Peking University Third Hospital, Beijing, China
| | - Fengbiao Mao
- Institute of Medical Innovation and Research, Peking University Third Hospital, Beijing, China; Cancer Center, Peking University Third Hospital, Beijing, China.
| | - Zhongsheng Sun
- Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing, China; Institute of Genomic Medicine, Wenzhou Medical University, University Town, Chashan, Wenzhou, Zhejiang, China.
| | - Xiangdong Liu
- Key Laboratory of Developmental Genes and Human Diseases, School of Life Science and Technology, Southeast University, Nanjing, Jiangsu, China.
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8
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Alteration of E2F2 Expression in Governing Endothelial Cell Senescence. Genes (Basel) 2022; 13:genes13091522. [PMID: 36140689 PMCID: PMC9498592 DOI: 10.3390/genes13091522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 08/16/2022] [Accepted: 08/23/2022] [Indexed: 01/10/2023] Open
Abstract
Endothelial cell senescence has a vital implication for vascular dysfunction, leading to age-related cardiovascular disease, especially hypertension and atherosclerosis. E2F transcription factor 2 (E2F2) plays a critical role in cell proliferation, differentiation, and DNA damage response. Up to date, no study has ever connected E2F2 to vascular endothelial cell senescence. Here, we demonstrate that E2F2 is involved in endothelial cellular senescence. We found that E2F2 expression is decreased during the replicative senescence of human umbilical vein endothelial cells (HUVECs) and the aortas of aged mice. The knockdown of E2F2 in young HUVECs induces premature senescence characterized by an increase in senescence-associated β-galactosidase (SA-β-gal) activity, a reduction in phosphorylated endothelial nitric oxide synthase (p-eNOS) and sirtuin 1 (SIRT1), and the upregulation of senescence-associated secretory phenotype (SASP) IL-6 and IL-8. The lack of E2F2 promoted cell cycle arrest, DNA damage, and cell proliferation inhibition. Conversely, E2F2 overexpression reversed the senescence phenotype and enhanced the cellular function in the senescent cells. Furthermore, E2F2 deficiency downregulated downstream target genes including CNNA2, CDK1, and FOXM1, and overexpression restored the expression of these genes. Our findings demonstrate that E2F2 plays an indispensable role in endothelial cell senescence.
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9
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Liu A, Han N, Munoz-Muriedas J, Bender A. Deriving time-concordant event cascades from gene expression data: A case study for Drug-Induced Liver Injury (DILI). PLoS Comput Biol 2022; 18:e1010148. [PMID: 35687583 PMCID: PMC9292124 DOI: 10.1371/journal.pcbi.1010148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 07/18/2022] [Accepted: 04/26/2022] [Indexed: 01/10/2023] Open
Abstract
Adverse event pathogenesis is often a complex process which compromises multiple events ranging from the molecular to the phenotypic level. In toxicology, Adverse Outcome Pathways (AOPs) aim to formalize this as temporal sequences of events, in which event relationships should be supported by causal evidence according to the tailored Bradford-Hill criteria. One of the criteria is whether events are consistently observed in a certain temporal order and, in this work, we study this time concordance using the concept of “first activation” as data-driven means to generate hypotheses on potentially causal mechanisms. As a case study, we analysed liver data from repeat-dose studies in rats from the TG-GATEs database which comprises measurements across eight timepoints, ranging from 3 hours to 4 weeks post-treatment. We identified time-concordant gene expression-derived events preceding adverse histopathology, which serves as surrogate readout for Drug-Induced Liver Injury (DILI). We find known mechanisms in DILI to be time-concordant, and show further that significance, frequency and log fold change (logFC) of differential expression are metrics which can additionally prioritize events although not necessary to be mechanistically relevant. Moreover, we used the temporal order of transcription factor (TF) expression and regulon activity to identify transcriptionally regulated TFs and subsequently combined this with prior knowledge on functional interactions to derive detailed gene-regulatory mechanisms, such as reduced Hnf4a activity leading to decreased expression and activity of Cebpa. At the same time, also potentially novel events are identified such as Sox13 which is highly significantly time-concordant and shows sustained activation over time. Overall, we demonstrate how time-resolved transcriptomics can derive and support mechanistic hypotheses by quantifying time concordance and how this can be combined with prior causal knowledge, with the aim of both understanding mechanisms of toxicity, as well as potential applications to the AOP framework. We make our results available in the form of a Shiny app (https://anikaliu.shinyapps.io/dili_cascades), which allows users to query events of interest in more detail. Understanding mechanisms from systems-scale biological data is of great relevance in toxicology as well as drug discovery; however how to generate causal hypotheses instead of correlations is by no means clear. In this work, we study the conserved temporal order of events and present an automatable framework to quantify and characterize time concordance across a large set of time-series. We apply this concept to events derived from time-resolved gene expression and histopathology from the TG-GATEs in vivo liver data as a case study. We were able to recover known events involved in the pathogenesis of Drug-Induced Liver Injury (DILI), and identify potentially novel pathway and transcription factors (TFs) which precede adverse histopathology. As complementary sources of evidence for causality, we additionally show how time concordance and prior knowledge on plausible interactions between TFs can be combined to derive causal hypotheses on the TFs’ mode of regulation and interaction partners. Overall, the results derived in our case study can serve as valuable hypothesis-free starting points for the development of Adverse Outcome Pathways for DILI, and demonstrate that our approach provides a novel angle to prioritize mechanistically relevant events.
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Affiliation(s)
- Anika Liu
- Milner Therapeutics Institute, University of Cambridge, Cambridge, United Kingdom
- Systems Modelling and Translational Biology, Data and Computational Sciences, GSK, London, United Kingdom
- Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Cambridge, United Kingdom
- * E-mail: (AL); (AB)
| | - Namshik Han
- Milner Therapeutics Institute, University of Cambridge, Cambridge, United Kingdom
- Cambridge Centre for AI in Medicine, Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, United Kingdom
| | - Jordi Munoz-Muriedas
- Systems Modelling and Translational Biology, Data and Computational Sciences, GSK, London, United Kingdom
- Computer-Aided Drug Design, UCB, Slough, United Kingdom
| | - Andreas Bender
- Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Cambridge, United Kingdom
- * E-mail: (AL); (AB)
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10
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Wang J, Ma W, Si C, Zhang M, Qian W, Park G, Zhou B, Luo D. Exosome-mediated miR-4655–3p contributes to UV radiation-induced bystander effects. Exp Cell Res 2022; 418:113247. [DOI: 10.1016/j.yexcr.2022.113247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/04/2022] [Accepted: 06/05/2022] [Indexed: 11/04/2022]
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11
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Fan C, Liao M, Xie L, Huang L, Lv S, Cai S, Su X, Wang Y, Wang H, Wang M, Liu Y, Wang Y, Guo H, Yang H, Liu Y, Wang T, Ma L. Single-Cell Transcriptome Integration Analysis Reveals the Correlation Between Mesenchymal Stromal Cells and Fibroblasts. Front Genet 2022; 13:798331. [PMID: 35360851 PMCID: PMC8961367 DOI: 10.3389/fgene.2022.798331] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 01/18/2022] [Indexed: 02/05/2023] Open
Abstract
Background: Mesenchymal stromal cells (MSCs) and fibroblasts show similar morphology, surface marker expression, and proliferation, differentiation, and immunomodulatory capacities. These similarities not only blur their cell identities but also limit their application. Methods: We performed single-cell transcriptome sequencing of the human umbilical cord and foreskin MSCs (HuMSCs and FSMSCs) and extracted the single-cell transcriptome data of the bone marrow and adipose MSCs (BMSCs and ADMSCs) from the Gene Expression Omnibus (GEO) database. Then, we performed quality control, batch effect correction, integration, and clustering analysis of the integrated single-cell transcriptome data from the HuMSCs, FMSCs, BMSCs, and ADMSCs. The cell subsets were annotated based on the surface marker phenotypes for the MSCs (CD105 + , CD90 +, CD73 +, CD45 -, CD34 -, CD19 -, HLA-DRA -, and CD11b -), fibroblasts (VIM +, PECAM1 -, CD34 -, CD45 -, EPCAM -, and MYH11 -), and pericytes (CD146 +, PDGFRB +, PECAM1 -, CD34 -, and CD45 -). The expression levels of common fibroblast markers (ACTA2, FAP, PDGFRA, PDGFRB, S100A4, FN1, COL1A1, POSTN, DCN, COL1A2, FBLN2, COL1A2, DES, and CDH11) were also analyzed in all cell subsets. Finally, the gene expression profiles, differentiation status, and the enrichment status of various gene sets and regulons were compared between the cell subsets. Results: We demonstrated 15 distinct cell subsets in the integrated single-cell transcriptome sequencing data. Surface marker annotation demonstrated the MSC phenotype in 12 of the 15 cell subsets. C10 and C14 subsets demonstrated both the MSC and pericyte phenotypes. All 15 cell subsets demonstrated the fibroblast phenotype. C8, C12, and C13 subsets exclusively demonstrated the fibroblast phenotype. We identified 3,275 differentially expressed genes, 305 enriched gene sets, and 34 enriched regulons between the 15 cell subsets. The cell subsets that exclusively demonstrated the fibroblast phenotype represented less primitive and more differentiated cell types. Conclusion: Cell subsets with the MSC phenotype also demonstrated the fibroblast phenotype, but cell subsets with the fibroblast phenotype did not necessarily demonstrate the MSC phenotype, suggesting that MSCs represented a subclass of fibroblasts. We also demonstrated that the MSCs and fibroblasts represented highly heterogeneous populations with distinct cell subsets, which could be identified based on the differentially enriched gene sets and regulons that specify proliferating, differentiating, metabolic, and/or immunomodulatory functions.
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Affiliation(s)
- Chuiqin Fan
- Department of Pediatrics, The Second Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Maochuan Liao
- Department of Pediatrics, The Second Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Lichun Xie
- Department of Pediatrics, The Third Affiliated Hospital of Guangzhou Medical University (The Women and Children’s Medical Center of Guangzhou Medical University), Guangzhou, China
| | - Liangping Huang
- Department of Pediatrics, The Second Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Siyu Lv
- Department of Hematology and Oncology, Shenzhen Children’s Hospital of China Medical University, Shenzhen, China
| | - Siyu Cai
- Department of Pediatrics, The Second Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Xing Su
- Department of Pediatrics, The Second Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Yue Wang
- Department of Hematology and Oncology, Shenzhen Children’s Hospital of China Medical University, Shenzhen, China
| | - Hongwu Wang
- Department of Hematology and Oncology, Shenzhen Children’s Hospital of China Medical University, Shenzhen, China
| | - Manna Wang
- Department of Hematology and Oncology, Shenzhen Children’s Hospital of China Medical University, Shenzhen, China
| | - Yulin Liu
- Department of Pediatrics, The Second Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Yu Wang
- Department of Hematology and Oncology, Shenzhen Children’s Hospital of China Medical University, Shenzhen, China
| | - Huijie Guo
- Department of Hematology and Oncology, Shenzhen Children’s Hospital of China Medical University, Shenzhen, China
| | - Hanhua Yang
- Department of Pediatrics, The Third Affiliated Hospital of Guangzhou Medical University (The Women and Children’s Medical Center of Guangzhou Medical University), Guangzhou, China
| | - Yufeng Liu
- Department of Pediatrics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Tianyou Wang
- Department of Hematology and Oncology, Beijing Children’s Hospital, Capital Medical University, Beijing, China
| | - Lian Ma
- Department of Pediatrics, The Second Affiliated Hospital of Shantou University Medical College, Shantou, China
- Department of Pediatrics, The Third Affiliated Hospital of Guangzhou Medical University (The Women and Children’s Medical Center of Guangzhou Medical University), Guangzhou, China
- Department of Hematology and Oncology, Shenzhen Children’s Hospital of China Medical University, Shenzhen, China
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12
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Zhou Y, Zhang J, Li W, Zhang D, Wang Z, Zhai Y, Yu H, Li Z. Integrative investigation of the TF-miRNA coregulatory network involved in the inhibition of breast cancer cell proliferation by resveratrol. FEBS Open Bio 2021; 12:379-393. [PMID: 34856073 PMCID: PMC8804603 DOI: 10.1002/2211-5463.13344] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 11/08/2021] [Accepted: 12/01/2021] [Indexed: 01/18/2023] Open
Abstract
Resveratrol is a polyphenol with antiaging and anticancer effects. Most previous studies used a single analysis to determine the key functions of resveratrol in inhibiting cancer progression. However, most of the signal transmission pathways in biological processes are multilevel. We used bioinformatics to elucidate the mechanism of resveratrol inhibition of breast cancer development. The mRNA expression profile of GSE25412 from the National Center for Biotechnology Information (NCBI) and the microRNA (miRNA) expression profile of PubMed identifier (PMID) 26890143 were integrated. De novo motifs were used to obtain predicted transcription factor (TF) motifs for differentially expressed genes. The regulatory effect of resveratrol on key nodes in the comprehensive analysis results was verified. The TF–miRNA–mRNA interaction network based on the STITCH and miRDB databases showed that resveratrol exerted a dual inhibitory effect by activating inhibitory TFs to block the cell cycle and inhibit miRNAs from upregulating apoptosis. However, these two processes did not work completely independently. TP53 is the dominant hub gene associated with the cell cycle and apoptosis throughout the TF–miRNA network. Kaplan–Meier plotter analysis found that resveratrol‐induced expression changes in key RNAs, such as E2F2, JUN, FOS, BRCA1, CDK1, CDKN1A, TNF, and hsa‐miR‐34a‐5p, significantly improved the prognosis of breast cancer patients, which was further verified using real‐time quantitative PCR (qPCR) and western blotting. This study constructed a TF–miRNA regulatory network with TP53 and E2F as the main central genes to elucidate the molecular mechanism of resveratrol in the treatment of breast cancer.
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Affiliation(s)
- Yongfeng Zhou
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, China
| | - Jing Zhang
- College of Animal Sciences, Jilin University, Changchun, China
| | - Wei Li
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, China
| | - Daoyu Zhang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, China
| | - Zhengzhu Wang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, China
| | - Yanhui Zhai
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, China
| | - Hao Yu
- College of Animal Sciences, Jilin University, Changchun, China
| | - Ziyi Li
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, China
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13
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Fan Z, Kong M, Miao X, Guo Y, Ren H, Wang J, Wang S, Tang N, Shang L, Zhu Z, Liu H, Zhu W, Shi X. An E2F5-TFDP1-BRG1 Complex Mediates Transcriptional Activation of MYCN in Hepatocytes. Front Cell Dev Biol 2021; 9:742319. [PMID: 34746136 PMCID: PMC8569672 DOI: 10.3389/fcell.2021.742319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 10/04/2021] [Indexed: 12/22/2022] Open
Abstract
Liver regeneration is characterized by cell cycle reentrance of hepatocytes. N-Myc, encoded by MYCN, is a member of the Myc family of transcription factors. Elevation of MYCN expression has been noted in the course of liver regeneration whereas the underlying mechanism remains unclear. Here we describe that up-regulation of MYCN expression, as measured by quantitative PCR, Western blotting, and immunohistochemical staining, paralleled liver regeneration in animal and cell models. MYCN expression was up-regulated as a result of transcriptional activation. Ingenuity pathway analysis (IPA) revealed several up-stream transcriptional regulators for MYCN and RNA interference validated E2F5 and TFDP1 as essential for hepatocyte growth factor (HGF)-induced MYCN trans-activation. Further examination showed that deficiency of BRG1, a chromatin remodeling protein, attenuated MYCN induction during liver regeneration. BRG1 interacted with and was recruited by E2F5/TFDP1 to the MYCN promoter. Mechanistically, BRG1 might play a role regulating histone H3 acetylation and H3K4 trimethylation and facilitating/stabilizing the binding of RNA polymerase II surrounding the MYCN promoter. Over-expression of ectopic MYCN in BRG1-null hepatocytes overcame deficiency of proliferation. Importantly, a positive correlation between MYCN expression and BRG1/E2F5/TFDP1 expression was observed in human liver specimens. In conclusion, our data identify a novel epigenetic pathway where an E2F5-TFDP1-BRG1 complex regulates MYCN transcription to promote liver regeneration.
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Affiliation(s)
- Zhiwen Fan
- Department of Hepatobiliary Surgery, Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.,Hepatobiliary Institute, Nanjing University, Nanjing, China
| | - Ming Kong
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Translational Medicine, and Center for Experimental Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Xiulian Miao
- College of Life Sciences and Institute of Biomedical Research, Liaocheng University, Liaocheng, China
| | - Yan Guo
- College of Life Sciences and Institute of Biomedical Research, Liaocheng University, Liaocheng, China
| | - Haozhen Ren
- Department of Hepatobiliary Surgery, Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.,Hepatobiliary Institute, Nanjing University, Nanjing, China
| | - Jinglin Wang
- Department of Hepatobiliary Surgery, Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.,Hepatobiliary Institute, Nanjing University, Nanjing, China
| | - Shuai Wang
- Department of Hepatobiliary Surgery, Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.,Hepatobiliary Institute, Nanjing University, Nanjing, China
| | - Ning Tang
- Department of Hepatobiliary Surgery, Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.,Hepatobiliary Institute, Nanjing University, Nanjing, China
| | - Longcheng Shang
- Department of Hepatobiliary Surgery, Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Zhengyi Zhu
- Department of Hepatobiliary Surgery, Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Hanyi Liu
- Department of Hepatobiliary Surgery, Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Wei Zhu
- Department of Anesthesiology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Xiaolei Shi
- Department of Hepatobiliary Surgery, Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.,Hepatobiliary Institute, Nanjing University, Nanjing, China
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Abstract
E2F transcription factor 2 (E2F2) is a member of the E2F family of transcription factors. The classical view is that some E2Fs act as "activators" and others "inhibitors" of cell cycle gene expression. However, the so-called "activator" E2F2 is particularly enigmatic, with seemingly contradictory roles in the cell cycle, proliferation, apoptosis, inflammation, and cell migration and invasion. How can we rationalize the apparently opposing functions of E2F2 in different situations? This is difficult because different methods of studying E2F2 have yielded conflicting results, so extrapolating mechanisms from an observed endpoint is challenging. This review will attempt to summarize and clarify these issues. This review focuses on genetic studies that have helped elucidate the biological functions of E2F2 and that have enhanced our understanding of how E2F2 is integrated into pathways controlling the cell cycle, proliferation, apoptosis, inflammation, and cell migration and invasion. This review will also discuss the function of E2F2 in cancer and other diseases. This review provides a strong basis for further research on the biological function and clinical potential of E2F2.
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Affiliation(s)
- Luwen Li
- Biomedical Sciences College & Shandong Medicinal Biotechnology Centre, Shandong First Medical University, Ji'nan, China.,Key Lab for Biotech-Drugs of National Health Commission, Ji'nan, China.,Key Lab for Rare & Uncommon Diseases of Shandong Province, Shandong First Medical University, Ji'nan, China
| | - Shiguan Wang
- Medical College, Shandong University, Ji'nan, China
| | - Yihang Zhang
- Biomedical Sciences College & Shandong Medicinal Biotechnology Centre, Shandong First Medical University, Ji'nan, China.,Key Lab for Biotech-Drugs of National Health Commission, Ji'nan, China.,Key Lab for Rare & Uncommon Diseases of Shandong Province, Shandong First Medical University, Ji'nan, China
| | - Jihong Pan
- Biomedical Sciences College & Shandong Medicinal Biotechnology Centre, Shandong First Medical University, Ji'nan, China.,Key Lab for Biotech-Drugs of National Health Commission, Ji'nan, China.,Key Lab for Rare & Uncommon Diseases of Shandong Province, Shandong First Medical University, Ji'nan, China
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15
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E2F2 stimulates CCR4 expression and activates synovial fibroblast-like cells in rheumatoid arthritis. Cent Eur J Immunol 2021; 46:27-37. [PMID: 33897281 PMCID: PMC8056345 DOI: 10.5114/ceji.2021.105243] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Accepted: 10/03/2019] [Indexed: 01/01/2023] Open
Abstract
Aim of the study E2F transcription factor 2 (E2F2) has increased expression in synovial tissues of rheumatoid arthritis (RA) and stimulates interleukin (IL)-1 α and IL-β production in cultured RA synovial fibroblast-like cells (RASF), which supports the importance of E2F2 in RA pathogenesis. This study investigated the effect and mechanism of E2F2 in RA. Material and methods Cultured RASF were transfected with anti-E2F2 siRNA, and the expression profile was analyzed with an inflammatory response and autoimmunity PCR array loaded with 84-relative genes to explore the pathogenic pathway of E2F2. Apoptosis, migration and tube-like structure formation in the RASF with transfection of anti-E2F2 siRNA or E2F2-expressing plasmids were examined using flow cytometry, transwell assays and Matrigel assays, respectively. Results Significantly decreased expression of chemokine receptor 4 (CCR4) was detected in RASF with inhibited E2F2 expression, and the CCR4 expression was increased in RASF with transfection of E2F2-expressing plasmids. Silencing E2F2 expression stimulated apoptosis, but retarded migration and tube-like structure formation in RASF. The opposite observation was obtained in RASF with E2F2 overexpression. Conclusions High E2F2 expression decreases apoptosis and increases migration and tube-like structure ability in RASF and might perform this role by up-regulating CCR4 expression, which ultimately contributes to the disease progression of RA synovial tissues.
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González-Romero F, Mestre D, Aurrekoetxea I, O'Rourke CJ, Andersen JB, Woodhoo A, Tamayo-Caro M, Varela-Rey M, Palomo-Irigoyen M, Gómez-Santos B, de Urturi DS, Núñez-García M, García-Rodríguez JL, Fernández-Ares L, Buqué X, Iglesias-Ara A, Bernales I, De Juan VG, Delgado TC, Goikoetxea-Usandizaga N, Lee R, Bhanot S, Delgado I, Perugorria MJ, Errazti G, Mosteiro L, Gaztambide S, Martinez de la Piscina I, Iruzubieta P, Crespo J, Banales JM, Martínez-Chantar ML, Castaño L, Zubiaga AM, Aspichueta P. E2F1 and E2F2-Mediated Repression of CPT2 Establishes a Lipid-Rich Tumor-Promoting Environment. Cancer Res 2021; 81:2874-2887. [PMID: 33771899 DOI: 10.1158/0008-5472.can-20-2052] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 12/15/2020] [Accepted: 03/24/2021] [Indexed: 11/16/2022]
Abstract
Lipid metabolism rearrangements in nonalcoholic fatty liver disease (NAFLD) contribute to disease progression. NAFLD has emerged as a major risk for hepatocellular carcinoma (HCC), where metabolic reprogramming is a hallmark. Identification of metabolic drivers might reveal therapeutic targets to improve HCC treatment. Here, we investigated the contribution of transcription factors E2F1 and E2F2 to NAFLD-related HCC and their involvement in metabolic rewiring during disease progression. In mice receiving a high-fat diet (HFD) and diethylnitrosamine (DEN) administration, E2f1 and E2f2 expressions were increased in NAFLD-related HCC. In human NAFLD, E2F1 and E2F2 levels were also increased and positively correlated. E2f1 -/- and E2f2 -/- mice were resistant to DEN-HFD-induced hepatocarcinogenesis and associated lipid accumulation. Administration of DEN-HFD in E2f1 -/- and E2f2 -/- mice enhanced fatty acid oxidation (FAO) and increased expression of Cpt2, an enzyme essential for FAO, whose downregulation is linked to NAFLD-related hepatocarcinogenesis. These results were recapitulated following E2f2 knockdown in liver, and overexpression of E2f2 elicited opposing effects. E2F2 binding to the Cpt2 promoter was enhanced in DEN-HFD-administered mouse livers compared with controls, implying a direct role for E2F2 in transcriptional repression. In human HCC, E2F1 and E2F2 expressions inversely correlated with CPT2 expression. Collectively, these results indicate that activation of the E2F1-E2F2-CPT2 axis provides a lipid-rich environment required for hepatocarcinogenesis. SIGNIFICANCE: These findings identify E2F1 and E2F2 transcription factors as metabolic drivers of hepatocellular carcinoma, where deletion of just one is sufficient to prevent disease. GRAPHICAL ABSTRACT: http://cancerres.aacrjournals.org/content/canres/81/11/2874/F1.large.jpg.
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Affiliation(s)
- Francisco González-Romero
- Department of Physiology, Faculty of Medicine and Nursing, University of Basque Country UPV/EHU, Leioa, Spain
| | - Daniela Mestre
- Department of Physiology, Faculty of Medicine and Nursing, University of Basque Country UPV/EHU, Leioa, Spain.,BioCruces Bizkaia Health Research Institute, Cruces University Hospital, CIBERehd, Barakaldo, Spain
| | - Igor Aurrekoetxea
- Department of Physiology, Faculty of Medicine and Nursing, University of Basque Country UPV/EHU, Leioa, Spain.,BioCruces Bizkaia Health Research Institute, Cruces University Hospital, CIBERehd, Barakaldo, Spain
| | - Colm J O'Rourke
- Department of Health and Medical Sciences, Biotech Research and Innovation Center, University of Copenhagen, Denmark
| | - Jesper B Andersen
- Department of Health and Medical Sciences, Biotech Research and Innovation Center, University of Copenhagen, Denmark
| | - Ashwin Woodhoo
- Center for Cooperative Research in Bioscience (CIC bioGUNE), Derio, Spain.,Ikerbasque, Basque Foundation for Science, Bilbao, Spain
| | - Miguel Tamayo-Caro
- Center for Cooperative Research in Bioscience (CIC bioGUNE), Derio, Spain
| | - Marta Varela-Rey
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), CIBERehd Derio, Spain
| | | | - Beatriz Gómez-Santos
- Department of Physiology, Faculty of Medicine and Nursing, University of Basque Country UPV/EHU, Leioa, Spain
| | - Diego Sáenz de Urturi
- Department of Physiology, Faculty of Medicine and Nursing, University of Basque Country UPV/EHU, Leioa, Spain
| | - Maitane Núñez-García
- Department of Physiology, Faculty of Medicine and Nursing, University of Basque Country UPV/EHU, Leioa, Spain
| | - Juan L García-Rodríguez
- Department of Physiology, Faculty of Medicine and Nursing, University of Basque Country UPV/EHU, Leioa, Spain
| | - Larraitz Fernández-Ares
- Department of Physiology, Faculty of Medicine and Nursing, University of Basque Country UPV/EHU, Leioa, Spain.,BioCruces Bizkaia Health Research Institute, Cruces University Hospital, CIBERehd, Barakaldo, Spain
| | - Xabier Buqué
- Department of Physiology, Faculty of Medicine and Nursing, University of Basque Country UPV/EHU, Leioa, Spain.,BioCruces Bizkaia Health Research Institute, Cruces University Hospital, CIBERehd, Barakaldo, Spain
| | - Ainhoa Iglesias-Ara
- Department of Genetic, Physical Anthropology and Animal Physiology, Faculty of Science and Technology, University of Basque Country UPV/EHU, Leioa, Spain
| | | | - Virginia Gutierrez De Juan
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), CIBERehd Derio, Spain
| | - Teresa C Delgado
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), CIBERehd Derio, Spain
| | - Naroa Goikoetxea-Usandizaga
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), CIBERehd Derio, Spain
| | | | | | - Igotz Delgado
- Department of Physiology, Faculty of Medicine and Nursing, University of Basque Country UPV/EHU, Leioa, Spain
| | - Maria J Perugorria
- Department of Liver and Gastrointestinal Diseases, Biodonostia Health Research Institute, Donostia University Hospital, University of the Basque Country UPV/EHU, CIBERehd, San Sebastian, Spain.,Department of Medicine, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain
| | - Gaizka Errazti
- BioCruces Bizkaia Health Research Institute, Cruces University Hospital, CIBERehd, Barakaldo, Spain
| | - Lorena Mosteiro
- BioCruces Bizkaia Health Research Institute, Cruces University Hospital, CIBERehd, Barakaldo, Spain
| | - Sonia Gaztambide
- BioCruces Bizkaia Health Research Institute, Cruces University Hospital, CIBERehd, Barakaldo, Spain.,Faculty of Medicine and Nursing, University of Basque Country UPV/EHU, CIBERDEM, CIBERER, Leioa, Spain
| | | | - Paula Iruzubieta
- Department of Gastroenterology and Hepatology, Marqués de Valdecilla University Hospital, Santander, Spain
| | - Javier Crespo
- Department of Gastroenterology and Hepatology, Marqués de Valdecilla University Hospital, Santander, Spain
| | - Jesus M Banales
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain.,Department of Liver and Gastrointestinal Diseases, Biodonostia Health Research Institute, Donostia University Hospital, University of the Basque Country UPV/EHU, CIBERehd, San Sebastian, Spain
| | - Maria L Martínez-Chantar
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), CIBERehd Derio, Spain
| | - Luis Castaño
- BioCruces Bizkaia Health Research Institute, Cruces University Hospital, CIBERehd, Barakaldo, Spain.,Faculty of Medicine and Nursing, University of Basque Country UPV/EHU, CIBERDEM, CIBERER, Leioa, Spain
| | - Ana M Zubiaga
- Department of Genetic, Physical Anthropology and Animal Physiology, Faculty of Science and Technology, University of Basque Country UPV/EHU, Leioa, Spain
| | - Patricia Aspichueta
- Department of Physiology, Faculty of Medicine and Nursing, University of Basque Country UPV/EHU, Leioa, Spain. .,BioCruces Bizkaia Health Research Institute, Cruces University Hospital, CIBERehd, Barakaldo, Spain
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17
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Li R, Li B, Shen M, Cao Y, Zhang X, Li W, Tao J, Wu W, Liu H. LncRNA 2310043L19Rik inhibits differentiation and promotes proliferation of myoblast by sponging miR-125a-5p. Aging (Albany NY) 2020; 12:5625-5639. [PMID: 32229708 PMCID: PMC7185117 DOI: 10.18632/aging.102905] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 01/27/2020] [Indexed: 06/10/2023]
Abstract
Although many long non-coding RNAs (lncRNAs) have been identified in muscle, some of their physiological functions and regulatory mechanisms remain elusive. Here we report the functional identification and characterization of a novel lncRNA 2310043L19Rik (lnc-231), which is highly expressed in muscle. The expression level of lnc-231 in skeletal muscle of young mice is higher than that in aged mice. Functional analysis showed that overexpression of lnc-231 restrained differentiation and promoted proliferation of myoblast, while inhibition of lnc-231 revealed completely opposite effects in vitro. RNA molecules of lnc-231 acted mechanistically as competing endogenous RNAs (ceRNA) to target miR-125a-5p, whereas miR-125a-5p binds to the 3'-UTR of E2F3 mRNA to inhibit its function. Collectively, lncRNA 2310043L19Rik promotes proliferation and inhibits differentiation of myoblast cells by attenuating the function of miR-125a-5p.
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Affiliation(s)
- Rongyang Li
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Bojiang Li
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Ming Shen
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Yan Cao
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xuan Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Weijian Li
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Jingli Tao
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Wangjun Wu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Honglin Liu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
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18
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Cui X, Xiao D, Cui Y, Wang X. Exosomes-Derived Long Non-Coding RNA HOTAIR Reduces Laryngeal Cancer Radiosensitivity by Regulating microRNA-454-3p/E2F2 Axis. Onco Targets Ther 2019; 12:10827-10839. [PMID: 31849488 PMCID: PMC6912013 DOI: 10.2147/ott.s224881] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 11/06/2019] [Indexed: 12/27/2022] Open
Abstract
Background Studies have revealed exosomes are implicated in tumor microenvironment and tumorigenesis. Emerging evidence suggests long non-coding RNAs (lncRNAs) possess pivotal roles in laryngeal cancer progression. For this study, we aimed to find out the mechanism of exosomes and lncRNA HOTAIR in laryngeal cancer. Methods Laryngeal cancer cells-derived exosomes were initially extracted, separated and identified. Flow cytometry was applied to detect apoptosis to evaluate the effect of exosomes on cell radiosensitivity. Dual luciferase reporter gene assay, RNA pull-down and RNA immunoprecipitation assays were conducted to verify the interactions among HOTAIR, microRNA (miR)-454-3p and E2F2. The gain-and-loss functions of HOTAIR or miR-454-3p were carried out to explore their effects on TU212 and LLN cell viability, apoptosis and radiosensitivity. Levels of HOTAIR, miR-454-3p and E2F2 were detected after different treatments. An in vivo analysis was carried out in mice bearing laryngeal cancer xenografts. Results Laryngeal cancer-derived exosomes reduced laryngeal cancer cell radiosensitivity. HOTAIR expression was increased after cells were treated with exosome, and HOTAIR overexpression reduced laryngeal cancer cell radiosensitivity. Besides, HOTAIR worked as a competing endogenous RNA (ceRNA) of miR-454-3p to regulate E2F2 in laryngeal cancer cells. In vivo results were reproduced in in vivo studies, which demonstrated that HOTAIR knockdown reduced laryngeal cancer cell radiosensitivity by sponging miR-454-3p to silence E2F2. Conclusion Exosome-mediated HOTAIR acts as a ceRNA of miR-545-3p to regulate E2F2, thereby negatively regulating the radiosensitivity of laryngeal cancer cells. This study may offer novel insight into laryngeal cancer treatment.
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Affiliation(s)
- Xiangyan Cui
- Department of Otolaryngology-Head and Neck Surgery, The First Hospital of Jilin University, Changchun 130021, People's Republic of China
| | - Dong Xiao
- Department of Otolaryngology-Head and Neck Surgery, The First Hospital of Jilin University, Changchun 130021, People's Republic of China
| | - Yu Cui
- Department of Otolaryngology-Head and Neck Surgery, The First Hospital of Jilin University, Changchun 130021, People's Republic of China
| | - Xin Wang
- Department of Otolaryngology-Head and Neck Surgery, The First Hospital of Jilin University, Changchun 130021, People's Republic of China
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19
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Wang S, Zhang C, Hasson D, Desai A, SenBanerjee S, Magnani E, Ukomadu C, Lujambio A, Bernstein E, Sadler KC. Epigenetic Compensation Promotes Liver Regeneration. Dev Cell 2019; 50:43-56.e6. [PMID: 31231040 PMCID: PMC6615735 DOI: 10.1016/j.devcel.2019.05.034] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 04/02/2019] [Accepted: 05/16/2019] [Indexed: 12/19/2022]
Abstract
Two major functions of the epigenome are to regulate gene expression and to suppress transposons. It is unclear how these functions are balanced during physiological challenges requiring tissue regeneration, where exquisite coordination of gene expression is essential. Transcriptomic analysis of seven time points following partial hepatectomy identified the epigenetic regulator UHRF1, which is essential for DNA methylation, as dynamically expressed during liver regeneration in mice. UHRF1 deletion in hepatocytes (Uhrf1HepKO) caused genome-wide DNA hypomethylation but, surprisingly, had no measurable effect on gene or transposon expression or liver homeostasis. Partial hepatectomy of Uhrf1HepKO livers resulted in early and sustained activation of proregenerative genes and enhanced liver regeneration. This was attributed to redistribution of H3K27me3 from promoters to transposons, effectively silencing them and, consequently, alleviating repression of liver regeneration genes, priming them for expression in Uhrf1HepKO livers. Thus, epigenetic compensation safeguards the genome against transposon activation, indirectly affecting gene regulation.
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Affiliation(s)
- Shuang Wang
- Department of Medicine/Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Chi Zhang
- Program in Biology, New York University Abu Dhabi, Abu Dhabi, P.O. Box 129188, United Arab Emirates
| | - Dan Hasson
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Anal Desai
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Sucharita SenBanerjee
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA; College of Arts and Sciences, Wentworth Institute of Technology, 504 Parker St., Boston, MA 02115, USA
| | - Elena Magnani
- Program in Biology, New York University Abu Dhabi, Abu Dhabi, P.O. Box 129188, United Arab Emirates
| | - Chinweike Ukomadu
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Amaia Lujambio
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Liver Cancer Program, Division of Liver Diseases, Department of Medicine, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Emily Bernstein
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Kirsten C Sadler
- Department of Medicine/Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Program in Biology, New York University Abu Dhabi, Abu Dhabi, P.O. Box 129188, United Arab Emirates.
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20
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Rampersaud A, Lodato NJ, Shin A, Waxman DJ. Widespread epigenetic changes to the enhancer landscape of mouse liver induced by a specific xenobiotic agonist ligand of the nuclear receptor CAR. Toxicol Sci 2019; 171:315-338. [PMID: 31236583 PMCID: PMC6760311 DOI: 10.1093/toxsci/kfz148] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/13/2019] [Accepted: 06/17/2019] [Indexed: 12/13/2022] Open
Abstract
CAR (Nr1i3), a liver nuclear receptor and xenobiotic sensor, induces drug, steroid and lipid metabolism and dysregulates genes linked to hepatocellular carcinogenesis, but its impact on the liver epigenome is poorly understood. TCPOBOP, a halogenated xenochemical and highly specific CAR agonist ligand, induces localized chromatin opening or closing at several thousand mouse liver genomic regions, discovered as differential DNase-hypersensitive sites (ΔDHS). Active enhancer and promoter histone marks induced by TCPOBOP were enriched at opening DHS and TCPOBOP-inducible genes. Enrichment of CAR binding and CAR motifs was seen at opening DHS and their inducible drug/lipid metabolism gene targets, and at many constitutively open DHS located nearby. TCPOBOP-responsive cell cycle and DNA replication genes co-dependent on MET/EGFR signaling for induction were also enriched for CAR binding. A subset of opening DHS and many closing DHS mapping to TCPOBOP-responsive target genes did not bind CAR, indicating an indirect mechanism for their changes in chromatin accessibility. TCPOBOP-responsive DHS were also enriched for induced binding of RXRA, CEBPA and CEBPB, and for motifs for liver-enriched factors that may contribute to liver-specific transcriptional responses to TCPOBOP exposure. These studies elucidate the enhancer landscape of TCPOBOP-exposed liver and the widespread epigenetic changes that are induced by both direct and indirect mechanisms linked to CAR activation. The global maps of thousands of environmental chemical-induced epigenetic changes described here constitute a rich resource for further research on xenochemical effects on liver chromatin states and the epigenome.
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Affiliation(s)
- Andy Rampersaud
- Department of Biology and Bioinformatics Program, Boston University, Boston, MA USA
| | - Nicholas J Lodato
- Department of Biology and Bioinformatics Program, Boston University, Boston, MA USA
| | - Aram Shin
- Department of Biology and Bioinformatics Program, Boston University, Boston, MA USA
| | - David J Waxman
- Department of Biology and Bioinformatics Program, Boston University, Boston, MA USA
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21
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Zhang K, Wang M, Zhao Y, Wang W. Taiji: System-level identification of key transcription factors reveals transcriptional waves in mouse embryonic development. SCIENCE ADVANCES 2019; 5:eaav3262. [PMID: 30944857 PMCID: PMC6436936 DOI: 10.1126/sciadv.aav3262] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 01/30/2019] [Indexed: 05/20/2023]
Abstract
Transcriptional regulation is pivotal to the specification of distinct cell types during embryonic development. However, it still lacks a systematic way to identify key transcription factors (TFs) orchestrating the temporal and tissue specificity of gene expression. Here, we integrated epigenomic and transcriptomic data to reveal key regulators from two cells to postnatal day 0 in mouse embryogenesis. We predicted three-dimensional chromatin interactions in 12 tissues across eight developmental stages, which facilitates linking TFs to their target genes for constructing transcriptional regulatory networks. To identify driver TFs, we developed a new algorithm, dubbed Taiji, to assess the global influence of each TF and systematically uncovered TFs critical for lineage-specific and stage-dependent tissue specification. We have also identified TF combinations that function in spatiotemporal order to form transcriptional waves regulating developmental progress. Furthermore, lacking stage-specific TF combinations suggests a distributed timing strategy to orchestrate the coordination between tissues during embryonic development.
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Affiliation(s)
- Kai Zhang
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, USA
| | - Mengchi Wang
- Bioinformatics and Systems Biology Graduate Program, University of California, San Diego, La Jolla, CA, USA
| | - Ying Zhao
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, USA
| | - Wei Wang
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, USA
- Bioinformatics and Systems Biology Graduate Program, University of California, San Diego, La Jolla, CA, USA
- Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, USA
- Corresponding author.
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22
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Li Yim AYF, de Bruyn JR, Duijvis NW, Sharp C, Ferrero E, de Jonge WJ, Wildenberg ME, Mannens MMAM, Buskens CJ, D’Haens GR, Henneman P, te Velde AA. A distinct epigenetic profile distinguishes stenotic from non-inflamed fibroblasts in the ileal mucosa of Crohn's disease patients. PLoS One 2018; 13:e0209656. [PMID: 30589872 PMCID: PMC6307755 DOI: 10.1371/journal.pone.0209656] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 12/10/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The chronic remitting and relapsing intestinal inflammation characteristic of Crohn's disease frequently leads to fibrosis and subsequent stenosis of the inflamed region. Approximately a third of all Crohn's disease patients require resection at some stage in their disease course. As the pathogenesis of Crohn's disease associated fibrosis is largely unknown, a strong necessity exists to better understand the pathophysiology thereof. METHODS In this study, we investigated changes of the DNA methylome and transcriptome of ileum-derived fibroblasts associated to the occurrence of Crohn's disease associated fibrosis. Eighteen samples were included in a DNA methylation array and twenty-one samples were used for RNA sequencing. RESULTS Most differentially methylated regions and differentially expressed genes were observed when comparing stenotic with non-inflamed samples. By contrast, few differences were observed when comparing Crohn's disease with non-Crohn's disease, or inflamed with non-inflamed tissue. Integrative methylation and gene expression analyses revealed dysregulation of genes associated to the PRKACA and E2F1 network, which is involved in cell cycle progression, angiogenesis, epithelial to mesenchymal transition, and bile metabolism. CONCLUSION Our research provides evidence that the methylome and the transcriptome are systematically dysregulated in stenosis-associated fibroblasts.
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Affiliation(s)
- Andrew Y. F. Li Yim
- Genome Diagnostics Laboratory, Department of Clinical Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
- Epigenetics Discovery Performance Unit, GlaxoSmithKline, Stevenage, United Kingdom
| | - Jessica R. de Bruyn
- Tytgat Institute for Liver and Intestinal Research, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
- Department of Gastroenterology, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Nicolette W. Duijvis
- Tytgat Institute for Liver and Intestinal Research, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Catriona Sharp
- Epigenetics Discovery Performance Unit, GlaxoSmithKline, Stevenage, United Kingdom
| | - Enrico Ferrero
- Computational Biology, Target Sciences, GlaxoSmithKline, Stevenage, United Kingdom
| | - Wouter J. de Jonge
- Tytgat Institute for Liver and Intestinal Research, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Manon E. Wildenberg
- Tytgat Institute for Liver and Intestinal Research, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Marcel M. A. M. Mannens
- Genome Diagnostics Laboratory, Department of Clinical Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Christianne J. Buskens
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Geert R. D’Haens
- Department of Gastroenterology, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Peter Henneman
- Genome Diagnostics Laboratory, Department of Clinical Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Anje A. te Velde
- Tytgat Institute for Liver and Intestinal Research, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
- * E-mail:
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23
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Russell JO, Ko S, Saggi HS, Singh S, Poddar M, Shin D, Monga SP. Bromodomain and Extraterminal (BET) Proteins Regulate Hepatocyte Proliferation in Hepatocyte-Driven Liver Regeneration. THE AMERICAN JOURNAL OF PATHOLOGY 2018; 188:1389-1405. [PMID: 29545201 DOI: 10.1016/j.ajpath.2018.02.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 02/16/2018] [Accepted: 02/16/2018] [Indexed: 12/20/2022]
Abstract
Bromodomain and extraterminal (BET) proteins recruit key components of basic transcriptional machinery to promote gene expression. Aberrant expression and mutations in BET genes have been identified in many malignancies. Small molecule inhibitors of BET proteins such as JQ1 have shown efficacy in preclinical cancer models, including affecting growth of hepatocellular carcinoma. BET proteins also regulate cell proliferation in nontumor settings. We recently showed that BET proteins regulate cholangiocyte-driven liver regeneration. Here, we studied the role of BET proteins in hepatocyte-driven liver regeneration in partial hepatectomy (PHx) and acetaminophen-induced liver injury models in mice and zebrafish. JQ1 was injected 2 or 16 hours after PHx in mice to determine effect on hepatic injury, regeneration, and signaling. Mice treated with JQ1 after PHx displayed increased liver injury and a near-complete inhibition of hepatocyte proliferation. Levels of Ccnd1 mRNA and Cyclin D1 protein were reduced in animals injected with JQ1 16 hours after PHx and were even further reduced in animals injected with JQ1 2 hours after PHx. JQ1-treated zebrafish larvae after acetaminophen-induced injury also displayed notably impaired hepatocyte proliferation. In both models, Wnt signaling was prominently suppressed by JQ1. Our results show that BET proteins regulate hepatocyte proliferation-driven liver regeneration, and Wnt signaling is particularly sensitive to BET protein inhibition.
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Affiliation(s)
- Jacquelyn O Russell
- Department of Pathology, University of Pittsburgh Medical Center, University of Pittsburgh, School of Medicine Pittsburgh, Pennsylvania; Pittsburgh Liver Research Center, University of Pittsburgh Medical Center, University of Pittsburgh, School of Medicine Pittsburgh, Pennsylvania
| | - Sungjin Ko
- Pittsburgh Liver Research Center, University of Pittsburgh Medical Center, University of Pittsburgh, School of Medicine Pittsburgh, Pennsylvania; Department of Developmental Biology, University of Pittsburgh Medical Center, University of Pittsburgh, School of Medicine Pittsburgh, Pennsylvania
| | - Harvinder S Saggi
- Department of Pathology, University of Pittsburgh Medical Center, University of Pittsburgh, School of Medicine Pittsburgh, Pennsylvania; Pittsburgh Liver Research Center, University of Pittsburgh Medical Center, University of Pittsburgh, School of Medicine Pittsburgh, Pennsylvania
| | - Sucha Singh
- Department of Pathology, University of Pittsburgh Medical Center, University of Pittsburgh, School of Medicine Pittsburgh, Pennsylvania; Pittsburgh Liver Research Center, University of Pittsburgh Medical Center, University of Pittsburgh, School of Medicine Pittsburgh, Pennsylvania
| | - Minakshi Poddar
- Department of Pathology, University of Pittsburgh Medical Center, University of Pittsburgh, School of Medicine Pittsburgh, Pennsylvania; Pittsburgh Liver Research Center, University of Pittsburgh Medical Center, University of Pittsburgh, School of Medicine Pittsburgh, Pennsylvania
| | - Donghun Shin
- Pittsburgh Liver Research Center, University of Pittsburgh Medical Center, University of Pittsburgh, School of Medicine Pittsburgh, Pennsylvania; Department of Developmental Biology, University of Pittsburgh Medical Center, University of Pittsburgh, School of Medicine Pittsburgh, Pennsylvania.
| | - Satdarshan P Monga
- Department of Pathology, University of Pittsburgh Medical Center, University of Pittsburgh, School of Medicine Pittsburgh, Pennsylvania; Pittsburgh Liver Research Center, University of Pittsburgh Medical Center, University of Pittsburgh, School of Medicine Pittsburgh, Pennsylvania.
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24
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A critical role of E2F transcription factor 2 in proinflammatory cytokines-dependent proliferation and invasiveness of fibroblast-like synoviocytes in rheumatoid Arthritis. Sci Rep 2018; 8:2623. [PMID: 29422529 PMCID: PMC5805761 DOI: 10.1038/s41598-018-20782-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 01/24/2018] [Indexed: 12/25/2022] Open
Abstract
As a transcription factor, E2F2 participates in regulation of numerous genes. To investigate the role and mechnism of E2F2 in RA, expression of E2F2 in synovial tissue was detected. Proliferation, invasion, and secretion of inflammatory cytokines were measured after E2F2 was knocked-down in RASFs by siRNA transfection. Induction of TNF-α, IL-6, and LPS on expression and nuclear translocation of E2F2, and signal pathways involved in the process were tested. ChIP was used to investigate direct binding of NF-кB to the promoter of E2F2, and E2F2 to the promoter of IL-6. The correlation between mRNA levels of E2F2 and IL-6 or TNF-α in secreted in supernatant of RASFs were also investigated. As a result, silencing E2F2 could inhibit the proliferation and invasion of RASFs. LPS, IL-6 can stimulate the expression of E2F2 in RASFs both via the NF-кB pathway, while TNF-α via the ERK pathway. TNF-α can facilitate the nuclear translocation of E2F2 and TNF-α can bind to promoter of E2F2, and then E2F2 can bind to the promoter of IL-6 directly. Significant correlations was found between levels of E2F2 and IL-6/TNF-α in synoviocytes of RA patients. Our findings indicate that E2F2 may play an important role in pathogenesis of RA.
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Armengol S, Arretxe E, Enzunza L, Llorente I, Mendibil U, Navarro-Imaz H, Ochoa B, Chico Y, Martínez MJ. SREBP-2-driven transcriptional activation of human SND1 oncogene. Oncotarget 2017; 8:108181-108194. [PMID: 29296233 PMCID: PMC5746135 DOI: 10.18632/oncotarget.22569] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 09/22/2017] [Indexed: 01/28/2023] Open
Abstract
Upregulation of Staphylococcal nuclease and tudor domain containing 1 (SND1) is linked to cancer progression and metastatic spread. Increasing evidence indicates that SND1 plays a role in lipid homeostasis. Recently, it has been shown that SND1-overexpressing hepatocellular carcinoma cells present an increased de novo cholesterol synthesis and cholesteryl ester accumulation. Here we reveal that SND1 oncogene is a novel target for SREBPs. Exposure of HepG2 cells to the cholesterol-lowering drug simvastatin or to a lipoprotein-deficient medium triggers SREBP-2 activation and increases SND1 promoter activity and transcript levels. Similar increases in SND1 promoter activity and mRNA are mimicked by overexpressing nuclear SREBP-2 through expression vector transfection. Conversely, SREBP-2 suppression with specific siRNA or the addition of cholesterol/25-hydroxycholesterol to cell culture medium reduces transcriptional activity of SND1 promoter and SND1 mRNA abundance. Chromatin immunoprecipitation assays and site-directed mutagenesis show that SREBP-2 binds to the SND1 proximal promoter in a region containing one SRE and one E-box motif which are critical for maximal transcriptional activity under basal conditions. SREBP-1, in contrast, binds exclusively to the SRE element. Remarkably, while ectopic expression of SREBP-1c or -1a reduces SND1 promoter activity, knocking-down of SREBP-1 enhances SND1 mRNA and protein levels but failed to affect SND1 promoter activity. These findings reveal that SREBP-2 and SREBP-1 bind to specific sites in SND1 promoter and regulate SND1 transcription in opposite ways; it is induced by SREBP-2 activating conditions and repressed by SREBP-1 overexpression. We anticipate the contribution of a SREBPs/SND1 pathway to lipid metabolism reprogramming of human hepatoma cells.
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Affiliation(s)
- Sandra Armengol
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Vizcaya, Spain
| | - Enara Arretxe
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Vizcaya, Spain
| | - Leire Enzunza
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Vizcaya, Spain
| | - Irati Llorente
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Vizcaya, Spain
| | - Unai Mendibil
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Vizcaya, Spain
| | - Hiart Navarro-Imaz
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Vizcaya, Spain
| | - Begoña Ochoa
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Vizcaya, Spain
| | - Yolanda Chico
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Vizcaya, Spain
| | - María José Martínez
- Lipids & Liver Research Group, Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Vizcaya, Spain
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26
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Huntington JT, Tang X, Kent LN, Schmidt CR, Leone G. The Spectrum of E2F in Liver Disease--Mediated Regulation in Biology and Cancer. J Cell Physiol 2016; 231:1438-49. [PMID: 26566968 DOI: 10.1002/jcp.25242] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 11/03/2015] [Indexed: 12/11/2022]
Abstract
Uncoordinated cell growth is one of the fundamental concepts in carcinogenesis and occurs secondary to dysregulation of the cell cycle. The E2Fs are a large family of transcription factors and are key regulators of the cell cycle. The activation of E2Fs is intimately regulated by retinoblastoma 1 (RB1). The RB pathway has been implicated in almost every human malignancy. Recently there have been exciting developments in the E2F field using animal models to better understand the role of E2Fs in vivo. Genetic mouse models have proven essential in implicating E2Fs in hepatocellular carcinoma (HCC) and liver disease. In this review, the general structure and function of E2Fs as well as the role for E2Fs in the development of HCC and liver disease is evaluated. Specifically, what is known about E2Fs in human disease is explored in depth, and future directions are discussed.
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Affiliation(s)
- Justin T Huntington
- Department of Surgery, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Xing Tang
- Department of Molecular Virology, Immunology and Medical Genetics, College of Medicine, Columbus, Ohio.,Department of Molecular Genetics, College of Biological Sciences, The Ohio State University, Columbus, Ohio.,Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - Lindsey N Kent
- Department of Molecular Virology, Immunology and Medical Genetics, College of Medicine, Columbus, Ohio.,Department of Molecular Genetics, College of Biological Sciences, The Ohio State University, Columbus, Ohio.,Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - Carl R Schmidt
- Department of Surgery, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Gustavo Leone
- Department of Molecular Virology, Immunology and Medical Genetics, College of Medicine, Columbus, Ohio.,Department of Molecular Genetics, College of Biological Sciences, The Ohio State University, Columbus, Ohio.,Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
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27
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Arretxe E, Armengol S, Mula S, Chico Y, Ochoa B, Martínez MJ. Profiling of promoter occupancy by the SND1 transcriptional coactivator identifies downstream glycerolipid metabolic genes involved in TNFα response in human hepatoma cells. Nucleic Acids Res 2015; 43:10673-88. [PMID: 26323317 PMCID: PMC4678849 DOI: 10.1093/nar/gkv858] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 08/17/2015] [Indexed: 01/07/2023] Open
Abstract
The NF-κB-inducible Staphylococcal nuclease and tudor domain-containing 1 gene (SND1) encodes a coactivator involved in inflammatory responses and tumorigenesis. While SND1 is known to interact with certain transcription factors and activate client gene expression, no comprehensive mapping of SND1 target genes has been reported. Here, we have approached this question by performing ChIP-chip assays on human hepatoma HepG2 cells and analyzing SND1 binding modulation by proinflammatory TNFα. We show that SND1 binds 645 gene promoters in control cells and 281 additional genes in TNFα-treated cells. Transcription factor binding site analysis of bound probes identified motifs for established partners and for novel transcription factors including HSF, ATF, STAT3, MEIS1/AHOXA9, E2F and p300/CREB. Major target genes were involved in gene expression and RNA metabolism regulation, as well as development and cellular metabolism. We confirmed SND1 binding to 21 previously unrecognized genes, including a set of glycerolipid genes. Knocking-down experiments revealed that SND1 deficiency compromises the glycerolipid gene reprogramming and lipid phenotypic responses to TNFα. Overall, our findings uncover an unexpected large set of potential SND1 target genes and partners and reveal SND1 to be a determinant downstream effector of TNFα that contributes to support glycerophospholipid homeostasis in human hepatocellular carcinoma during inflammation.
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Affiliation(s)
- Enara Arretxe
- Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country (UPV/EHU), 48940 Leioa, Bizkaia, Spain
| | - Sandra Armengol
- Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country (UPV/EHU), 48940 Leioa, Bizkaia, Spain
| | - Sarai Mula
- Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country (UPV/EHU), 48940 Leioa, Bizkaia, Spain
| | - Yolanda Chico
- Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country (UPV/EHU), 48940 Leioa, Bizkaia, Spain
| | - Begoña Ochoa
- Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country (UPV/EHU), 48940 Leioa, Bizkaia, Spain
| | - María José Martínez
- Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country (UPV/EHU), 48940 Leioa, Bizkaia, Spain
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28
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Hu C, Li L. In vitro culture of isolated primary hepatocytes and stem cell-derived hepatocyte-like cells for liver regeneration. Protein Cell 2015; 6:562-74. [PMID: 26088193 PMCID: PMC4506286 DOI: 10.1007/s13238-015-0180-2] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 05/25/2015] [Indexed: 02/07/2023] Open
Abstract
Various liver diseases result in terminal hepatic failure, and liver transplantation, cell transplantation and artificial liver support systems are emerging as effective therapies for severe hepatic disease. However, all of these treatments are limited by organ or cell resources, so developing a sufficient number of functional hepatocytes for liver regeneration is a priority. Liver regeneration is a complex process regulated by growth factors (GFs), cytokines, transcription factors (TFs), hormones, oxidative stress products, metabolic networks, and microRNA. It is well-known that the function of isolated primary hepatocytes is hard to maintain; when cultured in vitro, these cells readily undergo dedifferentiation, causing them to lose hepatocyte function. For this reason, most studies focus on inducing stem cells, such as embryonic stem cells (ESCs), induced pluripotent stem cells (iPSCs), hepatic progenitor cells (HPCs), and mesenchymal stem cells (MSCs), to differentiate into hepatocyte-like cells (HLCs) in vitro. In this review, we mainly focus on the nature of the liver regeneration process and discuss how to maintain and enhance in vitro hepatic function of isolated primary hepatocytes or stem cell-derived HLCs for liver regeneration. In this way, hepatocytes or HLCs may be applied for clinical use for the treatment of terminal liver diseases and may prolong the survival time of patients in the near future.
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Affiliation(s)
- Chenxia Hu
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, School of Medicine, First Affiliated Hospital, Zhejiang University, Hangzhou, 310006, China
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29
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Song C, Wu G, Xiang A, Zhang Q, Li W, Yang G, Shi X, Sun S, Li X. Over-expression of miR-125a-5p inhibits proliferation in C2C12 myoblasts by targeting E2F3. Acta Biochim Biophys Sin (Shanghai) 2015; 47:244-9. [PMID: 25733534 DOI: 10.1093/abbs/gmv006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
MicroRNAs (miRNAs) are a class of small non-coding RNAs of 20-25 nucleotides in length. It has been shown that miRNAs play important roles in the proliferation of many types of cells, including myoblasts. In this study, we used real-time quantitative polymerase chain reaction, western blotting, EdU, flow cytometry, and CCK-8 assay to explore the role of miR-125a-5p during the proliferation of C2C12 myoblasts. It was found that the expression of miR-125a-5p was decreased during C2C12 myoblast proliferation. Over-expression of miR-125a-5p inhibited C2C12 myoblast proliferation as indicated by EdU staining, flow cytometry, and CCK8 assay. It was also found that miR-125a-5p could negatively regulate E2F3 expression at posttranscriptional level, via a specific target site in the 3' untranslated region. Knockdown of E2F3 showed a similar inhibitory effect on C2C12 myoblast proliferation. Thus, our findings suggest that miR-125a-5p may act as a negative regulator of C2C12 myoblast proliferation by targeting E2F3.
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Affiliation(s)
- Chengchuang Song
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Guofang Wu
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Aoqi Xiang
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Qiangling Zhang
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Wanhua Li
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Gongshe Yang
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Xin'e Shi
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Shiduo Sun
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Xiao Li
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
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30
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Kanai D, Ueda A, Akagi T, Yokota T, Koide H. Oct3/4 directly regulates expression of E2F3a in mouse embryonic stem cells. Biochem Biophys Res Commun 2015; 459:374-8. [PMID: 25727014 DOI: 10.1016/j.bbrc.2015.02.105] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 02/18/2015] [Indexed: 10/23/2022]
Abstract
Embryonic stem (ES) cells, derived from the inner cell mass of blastocysts, have a characteristic cell cycle with truncated G1 and G2 phases. Recent findings that suppression of Oct3/4 expression results in a reduced proliferation rate of ES cells suggest the involvement of Oct3/4 in the regulation of ES cell growth, although the underlying molecular mechanism remains unclear. In the present study, we identified E2F3a as a direct target gene of Oct3/4 in ES cells. Oct3/4 directly bound to the promoter region of the E2F3a gene and positively regulated expression of E2F3a in mouse ES cells. Suppression of E2F3a activity by E2F6 overexpression led to the reduced proliferation in ES cells, which was relieved by co-expression of E2F3a. Furthermore, cell growth retardation caused by loss of Oct3/4 was rescued by E2F3a expression. These results suggest that Oct3/4 upregulates E2F3a expression to promote ES cell growth.
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Affiliation(s)
- Dai Kanai
- Department of Stem Cell Biology, Graduate School of Medical Sciences, Kanazawa University, Japan
| | - Atsushi Ueda
- Department of Stem Cell Biology, Graduate School of Medical Sciences, Kanazawa University, Japan
| | - Tadayuki Akagi
- Department of Stem Cell Biology, Graduate School of Medical Sciences, Kanazawa University, Japan
| | - Takashi Yokota
- Department of Stem Cell Biology, Graduate School of Medical Sciences, Kanazawa University, Japan
| | - Hiroshi Koide
- Department of Stem Cell Biology, Graduate School of Medical Sciences, Kanazawa University, Japan.
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31
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Armengol S, Arretxe E, Enzunza L, Mula S, Ochoa B, Chico Y, Martínez MJ. The promoter of cell growth- and RNA protection-associated SND1 gene is activated by endoplasmic reticulum stress in human hepatoma cells. BMC BIOCHEMISTRY 2014; 15:25. [PMID: 25494629 PMCID: PMC4266219 DOI: 10.1186/s12858-014-0025-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 11/26/2014] [Indexed: 12/15/2022]
Abstract
Background Staphyloccocal nuclease domain-containing protein 1 (SND1) is involved in the regulation of gene expression and RNA protection. While numerous studies have established that SND1 protein expression is modulated by cellular stresses associated with tumor growth, hypoxia, inflammation, heat-shock and oxidative conditions, little is known about the factors responsible for SND1 expression. Here, we have approached this question by analyzing the transcriptional response of human SND1 gene to pharmacological endoplasmic reticulum (ER) stress in liver cancer cells. Results We provide first evidence that SND1 promoter activity is increased in human liver cancer cells upon exposure to thapsigargin or tunicamycin or by ectopic expression of ATF6, a crucial transcription factor in the unfolded protein response triggered by ER stress. Deletion analysis of the 5’-flanking region of SND1 promoter identified maximal activation in fragment (-934, +221), which contains most of the predicted ER stress response elements in proximal promoter. Quantitative real-time PCR revealed a near 3 fold increase in SND1 mRNA expression by either of the stress-inducers; whereas SND1 protein was maximally upregulated (3.4-fold) in cells exposed to tunicamycin, a protein glycosylation inhibitor. Conclusion Promoter activity of the cell growth- and RNA-protection associated SND1 gene is up-regulated by ER stress in human hepatoma cells.
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Affiliation(s)
| | | | | | | | | | | | - María José Martínez
- Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, Leioa, 48940, Spain.
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32
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Maldonado EN, Delgado I, Furland NE, Buqué X, Iglesias A, Aveldaño MI, Zubiaga A, Fresnedo O, Ochoa B. The E2F2 transcription factor sustains hepatic glycerophospholipid homeostasis in mice. PLoS One 2014; 9:e112620. [PMID: 25396754 PMCID: PMC4232400 DOI: 10.1371/journal.pone.0112620] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 10/09/2014] [Indexed: 12/29/2022] Open
Abstract
Increasing evidence links metabolic signals to cell proliferation, but the molecular wiring that connects the two core machineries remains largely unknown. E2Fs are master regulators of cellular proliferation. We have recently shown that E2F2 activity facilitates the completion of liver regeneration after partial hepatectomy (PH) by regulating the expression of genes required for S-phase entry. Our study also revealed that E2F2 determines the duration of hepatectomy-induced hepatic steatosis. A transcriptomic analysis of normal adult liver identified “lipid metabolism regulation” as a major E2F2 functional target, suggesting that E2F2 has a role in lipid homeostasis. Here we use wild-type (E2F2+/+) and E2F2 deficient (E2F2−/−) mice to investigate the in vivo role of E2F2 in the composition of liver lipids and fatty acids in two metabolically different contexts: quiescence and 48-h post-PH, when cellular proliferation and anabolic demands are maximal. We show that liver regeneration is accompanied by large triglyceride and protein increases without changes in total phospholipids both in E2F2+/+ and E2F2−/− mice. Remarkably, we found that the phenotype of quiescent liver tissue from E2F2−/− mice resembles the phenotype of proliferating E2F2+/+ liver tissue, characterized by a decreased phosphatidylcholine to phosphatidylethanolamine ratio and a reprogramming of genes involved in generation of choline and ethanolamine derivatives. The diversity of fatty acids in total lipid, triglycerides and phospholipids was essentially preserved on E2F2 loss both in proliferating and non-proliferating liver tissue, although notable exceptions in inflammation-related fatty acids of defined phospholipid classes were detected. Overall, our results indicate that E2F2 activity sustains the hepatic homeostasis of major membrane glycerolipid components while it is dispensable for storage glycerolipid balance.
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Affiliation(s)
- Eduardo N. Maldonado
- Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country, Leioa, Spain
- Instituto de Investigaciones Bioquímicas de Bahía Blanca, Consejo Nacional de Investigaciones Científicas y Técnicas y Universidad Nacional del Sur, Bahía Blanca, Argentina
| | - Igotz Delgado
- Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country, Leioa, Spain
| | - Natalia E. Furland
- Instituto de Investigaciones Bioquímicas de Bahía Blanca, Consejo Nacional de Investigaciones Científicas y Técnicas y Universidad Nacional del Sur, Bahía Blanca, Argentina
| | - Xabier Buqué
- Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country, Leioa, Spain
| | - Ainhoa Iglesias
- Department of Genetics, Physical Anthropology and Animal Physiology, Faculty of Science and Technology, University of the Basque Country, Leioa, Spain
| | - Marta I. Aveldaño
- Instituto de Investigaciones Bioquímicas de Bahía Blanca, Consejo Nacional de Investigaciones Científicas y Técnicas y Universidad Nacional del Sur, Bahía Blanca, Argentina
| | - Ana Zubiaga
- Department of Genetics, Physical Anthropology and Animal Physiology, Faculty of Science and Technology, University of the Basque Country, Leioa, Spain
| | - Olatz Fresnedo
- Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country, Leioa, Spain
| | - Begoña Ochoa
- Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country, Leioa, Spain
- * E-mail:
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Osinalde N, Olea M, Mitxelena J, Aloria K, Rodriguez JA, Fullaondo A, Arizmendi JM, Zubiaga AM. The nuclear protein ALY binds to and modulates the activity of transcription factor E2F2. Mol Cell Proteomics 2013; 12:1087-98. [PMID: 23297349 DOI: 10.1074/mcp.m112.024158] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
E2F transcription factors control the expression of genes involved in a variety of essential cellular processes and consequently their activity needs to be tightly regulated. Protein-protein interactions are thought to be key modulators of E2F activity. To gain insight into the mechanisms that regulate the activity of E2F2, we searched for novel proteins that associate with this transcription factor. We show that the nuclear protein ALY (THO complex 4), originally described as a transcriptional co-activator, associates with DNA-bound E2F2 and represses its transcriptional activity. The capacity of ALY to modulate gene expression was analyzed with expression microarrays by characterizing the transcriptome of E2F2 expressing HEK293T cells in which ALY was either overexpressed or silenced. We show that ALY influences the expression of more than 400 genes, including 98 genes bearing consensus E2F motifs. Thus, ALY emerges as a novel E2F2-interacting protein and a relevant modulator of E2F-responsive gene expression.
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Affiliation(s)
- Nerea Osinalde
- Department of Biochemistry and Molecular Biology, University of the Basque Country, UPV/EHU, 48940 Leioa, Spain
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