1
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Tochimoto M, Oguri Y, Hashimura M, Konno R, Matsumoto T, Yokoi A, Kodera Y, Saegusa M. S100A4/non-muscle myosin II signaling regulates epithelial-mesenchymal transition and stemness in uterine carcinosarcoma. J Transl Med 2020; 100:682-695. [PMID: 31857700 DOI: 10.1038/s41374-019-0359-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 11/05/2019] [Accepted: 11/09/2019] [Indexed: 11/09/2022] Open
Abstract
Uterine carcinosarcoma (UCS) represents a true example of cancer associated with epithelial-mesenchymal transition (EMT), which exhibits cancer stem cell (CSC)-like traits. Although S100A4 is an inducer of EMT, little is known about its involvement in UCS tumorigenesis. Herein, we focused on the functional role of S100A4 during development of UCS. Expression of S100A4 and molecules associated with its function were also examined in 35 UCS cases. In endometrial carcinoma cell lines, S100A4 promoter activity and mRNA levels were significantly increased by the transfection of NF-κB/p65, independent of a putative κB-binding site in the promoter. Cells stably overexpressing S100A4 showed enhancement of CSC properties, along with decreased cell proliferation and acceleration of cell migration. These phenotypes were abrogated in S100A4-knockdown cells. A combination of S100A4 antibody-mediated co-immunoprecipitation and shotgun proteomics analysis revealed that S100A4 strongly interacted with non-muscle myosin II (NMII) heavy chains, including myosin 9 and myosin 14. Specific inhibition of NMII by blebbistatin phenocopied S100A4 overexpression and induced a fibroblast-like morphology. In clinical samples, S100A4 score was significantly higher in sarcomatous as compared with carcinomatous components of UCS, and was positively correlated with ALDH1, Slug, and vimentin scores, and inversely with Ki-67 labeling indices. These findings suggest that an S100A4/NMII-related signaling cascade may contribute to the establishment and maintenance of EMT/CSC properties, along with changes in cell proliferation and migration capability. These events may be initiated in carcinomatous components in UCS and lead to divergent sarcomatous differentiation.
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Affiliation(s)
- Masataka Tochimoto
- Department of Pathology, Kitasato University School of Medicine, Sagamihara, Kanagawa, 252-0374, Japan
| | - Yasuko Oguri
- Department of Pathology, Kitasato University School of Medicine, Sagamihara, Kanagawa, 252-0374, Japan
| | - Miki Hashimura
- Department of Pathology, Kitasato University School of Medicine, Sagamihara, Kanagawa, 252-0374, Japan
| | - Ryo Konno
- Center for Disease Proteomics, School of Science, Kitasato University, Sagamihara, Kanagawa, 252-0374, Japan
| | - Toshihide Matsumoto
- Department of Pathology, Kitasato University School of Medicine, Sagamihara, Kanagawa, 252-0374, Japan
| | - Ako Yokoi
- Department of Pathology, Kitasato University School of Medicine, Sagamihara, Kanagawa, 252-0374, Japan
| | - Yoshio Kodera
- Center for Disease Proteomics, School of Science, Kitasato University, Sagamihara, Kanagawa, 252-0374, Japan
| | - Makoto Saegusa
- Department of Pathology, Kitasato University School of Medicine, Sagamihara, Kanagawa, 252-0374, Japan.
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2
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Alanazi B, Munje CR, Rastogi N, Williamson AJK, Taylor S, Hole PS, Hodges M, Doyle M, Baker S, Gilkes AF, Knapper S, Pierce A, Whetton AD, Darley RL, Tonks A. Integrated nuclear proteomics and transcriptomics identifies S100A4 as a therapeutic target in acute myeloid leukemia. Leukemia 2020; 34:427-440. [PMID: 31611628 PMCID: PMC6995695 DOI: 10.1038/s41375-019-0596-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 09/18/2019] [Accepted: 09/30/2019] [Indexed: 12/20/2022]
Abstract
Inappropriate localization of proteins can interfere with normal cellular function and drive tumor development. To understand how this contributes to the development of acute myeloid leukemia (AML), we compared the nuclear proteome and transcriptome of AML blasts with normal human CD34+ cells. Analysis of the proteome identified networks and processes that significantly affected transcription regulation including misexpression of 11 transcription factors with seven proteins not previously implicated in AML. Transcriptome analysis identified changes in 40 transcription factors but none of these were predictive of changes at the protein level. The highest differentially expressed protein in AML nuclei compared with normal CD34+ nuclei (not previously implicated in AML) was S100A4. In an extended cohort, we found that over-expression of nuclear S100A4 was highly prevalent in AML (83%; 20/24 AML patients). Knock down of S100A4 in AML cell lines strongly impacted their survival whilst normal hemopoietic stem progenitor cells were unaffected. These data are the first analysis of the nuclear proteome in AML and have identified changes in transcription factor expression or regulation of transcription that would not have been seen at the mRNA level. These data also suggest that S100A4 is essential for AML survival and could be a therapeutic target in AML.
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Affiliation(s)
- Bader Alanazi
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Cardiff, CF14 4XN, Wales, UK
| | - Chinmay R Munje
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Cardiff, CF14 4XN, Wales, UK
- Paul O'Gorman Leukaemia Research Centre, University of Glasgow, Glasgow, G12 0ZD, UK
| | - Namrata Rastogi
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Cardiff, CF14 4XN, Wales, UK
| | - Andrew J K Williamson
- Stoller Biomarker Discovery Centre, The University of Manchester, Manchester, M20 3LJ, UK
| | - Samuel Taylor
- Stoller Biomarker Discovery Centre, The University of Manchester, Manchester, M20 3LJ, UK
| | - Paul S Hole
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Cardiff, CF14 4XN, Wales, UK
| | - Marie Hodges
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Cardiff, CF14 4XN, Wales, UK
- Cardiff Experimental and Cancer Medicine Centre (ECMC), School of Medicine, Cardiff University, Cardiff, CF14 4XN, Wales, UK
| | - Michelle Doyle
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Cardiff, CF14 4XN, Wales, UK
- Cardiff Experimental and Cancer Medicine Centre (ECMC), School of Medicine, Cardiff University, Cardiff, CF14 4XN, Wales, UK
| | - Sarah Baker
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Cardiff, CF14 4XN, Wales, UK
- Cardiff Experimental and Cancer Medicine Centre (ECMC), School of Medicine, Cardiff University, Cardiff, CF14 4XN, Wales, UK
| | - Amanda F Gilkes
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Cardiff, CF14 4XN, Wales, UK
- Cardiff Experimental and Cancer Medicine Centre (ECMC), School of Medicine, Cardiff University, Cardiff, CF14 4XN, Wales, UK
| | - Steven Knapper
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Cardiff, CF14 4XN, Wales, UK
| | - Andrew Pierce
- Stoller Biomarker Discovery Centre, The University of Manchester, Manchester, M20 3LJ, UK
| | - Anthony D Whetton
- Stoller Biomarker Discovery Centre, The University of Manchester, Manchester, M20 3LJ, UK
| | - Richard L Darley
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Cardiff, CF14 4XN, Wales, UK
| | - Alex Tonks
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Cardiff, CF14 4XN, Wales, UK.
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3
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Al-Ismaeel Q, Neal CP, Al-Mahmoodi H, Almutairi Z, Al-Shamarti I, Straatman K, Jaunbocus N, Irvine A, Issa E, Moreman C, Dennison AR, Emre Sayan A, McDearmid J, Greaves P, Tulchinsky E, Kriajevska M. ZEB1 and IL-6/11-STAT3 signalling cooperate to define invasive potential of pancreatic cancer cells via differential regulation of the expression of S100 proteins. Br J Cancer 2019; 121:65-75. [PMID: 31123345 PMCID: PMC6738112 DOI: 10.1038/s41416-019-0483-9] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Accepted: 05/02/2019] [Indexed: 12/12/2022] Open
Abstract
Background S100 proteins have been implicated in various aspects of cancer, including epithelial-mesenchymal transitions (EMT), invasion and metastasis, and also in inflammatory disorders. Here we examined the impact of individual members of this family on the invasion of pancreatic ductal adenocarcinoma (PDAC) cells, and their regulation by EMT and inflammation. Methods Invasion of PDAC cells was analysed in zebrafish embryo xenografts and in transwell invasion assays. Expression and regulation of S100 proteins was studied in vitro by immunoblotting, quantitative PCR and immunofluorescence, and in pancreatic lesions by immunohistochemistry. Results Whereas the expression of most S100 proteins is characteristic for epithelial PDAC cell lines, S100A4 and S100A6 are strongly expressed in mesenchymal cells and upregulated by ZEB1. S100A4/A6 and epithelial protein S100A14 respectively promote and represses cell invasion. IL-6/11-STAT3 pathway stimulates expression of most S100 proteins. ZEB1 synergises with IL-6/11-STAT3 to upregulate S100A4/A6, but nullifies the effect of inflammation on S100A14 expression. Conclusion EMT/ZEB1 and IL-6/11-STAT3 signalling act independently and congregate to establish the expression pattern of S100 proteins, which drives invasion. Although ZEB1 regulates expression of S100 family members, these effects are masked by IL-6/11-STAT3 signalling, and S100 proteins cannot be considered as bona fide EMT markers in PDAC.
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Affiliation(s)
- Qais Al-Ismaeel
- Leicester Cancer Research Centre, University of Leicester, Leicester, UK.,College of Medicine, University of Duhokl, Kurdistan region, Duhok, Iraq
| | - Christopher P Neal
- University Hospitals of Leicester NHS Trust Hepato-Pancreato-Biliary Unit, Leicester, UK
| | - Hanaa Al-Mahmoodi
- Leicester Cancer Research Centre, University of Leicester, Leicester, UK
| | - Zamzam Almutairi
- Leicester Cancer Research Centre, University of Leicester, Leicester, UK
| | | | - Kees Straatman
- Centre for Core Biotechnology Services, University of Leicester, Leicester, UK
| | - Nabil Jaunbocus
- Leicester Cancer Research Centre, University of Leicester, Leicester, UK
| | - Andrew Irvine
- Leicester Cancer Research Centre, University of Leicester, Leicester, UK
| | - Eyad Issa
- Leicester Cancer Research Centre, University of Leicester, Leicester, UK
| | - Catherine Moreman
- Department of Cellular Pathology, Leicester Royal Infirmary, Leicester, UK
| | - Ashley R Dennison
- University Hospitals of Leicester NHS Trust Hepato-Pancreato-Biliary Unit, Leicester, UK
| | - A Emre Sayan
- Cancer Sciences Division, University of Southampton, Southampton, UK
| | - Jonathan McDearmid
- Department of Neuroscience, Psychology and Behaviour, University of Leicester, Leicester, UK
| | - Peter Greaves
- Leicester Cancer Research Centre, University of Leicester, Leicester, UK
| | - Eugene Tulchinsky
- Leicester Cancer Research Centre, University of Leicester, Leicester, UK. .,Moscow Institute of Physics and Technology, Dolgoprudny, Moscow region, Russia. .,Department of Biomedical Sciences, Nazarbayev University School of Medicine, Astana, Kazakhstan.
| | - Marina Kriajevska
- Leicester Cancer Research Centre, University of Leicester, Leicester, UK.
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4
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Qu S, Wu J, Bao Q, Yao B, Duan R, Chen X, Li L, Yuan H, Jin Y, Ma C. Osterix promotes the migration and angiogenesis of breast cancer by upregulation of S100A4 expression. J Cell Mol Med 2019; 23:1116-1127. [PMID: 30450809 PMCID: PMC6349213 DOI: 10.1111/jcmm.14012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Revised: 07/19/2018] [Accepted: 09/12/2018] [Indexed: 11/26/2022] Open
Abstract
As a key transcription factor required for bone formation, osterix (OSX) has been reported to be overexpressed in various cancers, however, its roles in breast cancer progression remain poorly understood. In this study, we demonstrated that OSX was highly expressed in metastatic breast cancer cells. Moreover, it could upregulate the expression of S100 calcium binding protein A4 (S100A4) and potentiate breast cancer cell migration and tumor angiogenesis in vitro and in vivo. Importantly, inhibition of S100A4 impaired OSX-induced cell migration and capillary-like tube formation. Restored S100A4 expression rescued OSX-short hairpin RNA-suppressed cell migration and capillary-like tube formation. Moreover, the expression levels of OSX and S100A4 correlated significantly in human breast tumors. Our study suggested that OSX acts as an oncogenic driver in cell migration and tumor angiogenesis, and may serve as a potential therapeutic target for human breast cancer treatment.
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Affiliation(s)
- Shuang Qu
- Jiangsu Key Laboratory of XenotransplantationNanjing Medical UniversityNanjingChina
- Department of Medical GeneticsNanjing Medical UniversityNanjingChina
| | - Jiahui Wu
- Jiangsu Key Laboratory of XenotransplantationNanjing Medical UniversityNanjingChina
- Department of Medical GeneticsNanjing Medical UniversityNanjingChina
| | - Qianyi Bao
- Jiangsu Key Laboratory of XenotransplantationNanjing Medical UniversityNanjingChina
- Department of Medical GeneticsNanjing Medical UniversityNanjingChina
| | - Bing Yao
- Jiangsu Key Laboratory of XenotransplantationNanjing Medical UniversityNanjingChina
- Department of Medical GeneticsNanjing Medical UniversityNanjingChina
| | - Rui Duan
- Jiangsu Key Laboratory of XenotransplantationNanjing Medical UniversityNanjingChina
- Department of Medical GeneticsNanjing Medical UniversityNanjingChina
| | - Xiang Chen
- Department of General SurgeryThe Affiliated Yixing Hospital of Jiangsu UniversityYixingChina
| | - Lingyun Li
- Jiangsu Key Laboratory of XenotransplantationNanjing Medical UniversityNanjingChina
- Department of Medical GeneticsNanjing Medical UniversityNanjingChina
| | - Hongyan Yuan
- Department of Oncology and Lombardi Comprehensive Cancer CenterLombardi Comprehensive Cancer CenterWashingtonDistrict of Columbia
| | - Yucui Jin
- Jiangsu Key Laboratory of XenotransplantationNanjing Medical UniversityNanjingChina
- Department of Medical GeneticsNanjing Medical UniversityNanjingChina
| | - Changyan Ma
- Jiangsu Key Laboratory of XenotransplantationNanjing Medical UniversityNanjingChina
- Department of Medical GeneticsNanjing Medical UniversityNanjingChina
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5
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Motnenko A, Liang CC, Yang D, Lopez-Martinez D, Yoshikawa Y, Zhan B, Ward KE, Tian J, Haas W, Spingardi P, Kessler BM, Kriaucionis S, Gygi SP, Cohn MA. Identification of UHRF2 as a novel DNA interstrand crosslink sensor protein. PLoS Genet 2018; 14:e1007643. [PMID: 30335751 PMCID: PMC6193622 DOI: 10.1371/journal.pgen.1007643] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 08/17/2018] [Indexed: 02/04/2023] Open
Abstract
The Fanconi Anemia (FA) pathway is important for repairing interstrand crosslinks (ICLs) between the Watson-Crick strands of the DNA double helix. An initial and essential stage in the repair process is the detection of the ICL. Here, we report the identification of UHRF2, a paralogue of UHRF1, as an ICL sensor protein. UHRF2 is recruited to ICLs in the genome within seconds of their appearance. We show that UHRF2 cooperates with UHRF1, to ensure recruitment of FANCD2 to ICLs. A direct protein-protein interaction is formed between UHRF1 and UHRF2, and between either UHRF1 and UHRF2, and FANCD2. Importantly, we demonstrate that the essential monoubiquitination of FANCD2 is stimulated by UHRF1/UHRF2. The stimulation is mediating by a retention of FANCD2 on chromatin, allowing for its monoubiquitination by the FA core complex. Taken together, we uncover a mechanism of ICL sensing by UHRF2, leading to FANCD2 recruitment and retention at ICLs, in turn facilitating activation of FANCD2 by monoubiquitination.
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Affiliation(s)
- Anna Motnenko
- Department of Biochemistry, University of Oxford, Oxford, United Kingdom
| | - Chih-Chao Liang
- Department of Biochemistry, University of Oxford, Oxford, United Kingdom
| | - Di Yang
- Department of Biochemistry, University of Oxford, Oxford, United Kingdom
| | | | - Yasunaga Yoshikawa
- Department of Biochemistry, University of Oxford, Oxford, United Kingdom
| | - Bao Zhan
- Department of Biochemistry, University of Oxford, Oxford, United Kingdom
| | - Katherine E. Ward
- Department of Biochemistry, University of Oxford, Oxford, United Kingdom
| | - Jiayang Tian
- Department of Biochemistry, University of Oxford, Oxford, United Kingdom
| | - Wilhelm Haas
- Department of Cell Biology, Harvard Medical School, Boston, MA, United States of America Medicine, Kitasato University, Aomori, Japan
| | - Paolo Spingardi
- Ludwig Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, United Kingdom
| | - Benedikt M. Kessler
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Skirmantas Kriaucionis
- Ludwig Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, United Kingdom
| | - Steven P. Gygi
- Department of Cell Biology, Harvard Medical School, Boston, MA, United States of America Medicine, Kitasato University, Aomori, Japan
| | - Martin A. Cohn
- Department of Biochemistry, University of Oxford, Oxford, United Kingdom
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6
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Mudduluru G, Ilm K, Fuchs S, Stein U. Epigenetic silencing of miR-520c leads to induced S100A4 expression and its mediated colorectal cancer progression. Oncotarget 2017; 8:21081-21094. [PMID: 28423501 PMCID: PMC5400567 DOI: 10.18632/oncotarget.15499] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 02/07/2017] [Indexed: 01/15/2023] Open
Abstract
The S100 calcium-binding protein A4 (S100A4) induces epithelial mesenchymal transition, migration, invasion, angiogenesis and metastasis. Its induced expression in several cancer types correlates with poor prognosis. Apart from the functional and transcriptional regulatory aspects of S100A4, its post-transcriptional regulation is not yet clearly elucidated. In this study, we show that microRNAs (miR) miR-505-5p and miR-520c-3p target the 3′-UTR of S100A4 and inhibits its expression and its mediated migration and invasion. 5-Aza treatment significantly increased miR-520c-3p expression and reduced the S100A4 protein amounts. The upstream promoter region of miR-520c is hypermethylated irrespective of the metastasis status of colorectal cancer (CRC) patient tissues and in all analyzed CRC cell lines. Moreover, in a cohort of CRC patient specimen (n = 59), miR-520c-3p was significantly downregulated. miR-520c-3p stably expressing HCT116 cells showed a reduced metastasis formation in livers after implanting in mice spleen. Taken together, our findings demonstrate that S100A4 is post-transcriptionally regulated by tumor suppressor miRs, miR-505c-5p and miR-520c-3p, and particularly miR-520c-3p expression is epigenetically silenced in CRC.
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Affiliation(s)
- Giridhar Mudduluru
- Experimental and Clinical Research Center, Charité University Medicine Berlin and Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany.,German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Katharina Ilm
- Experimental and Clinical Research Center, Charité University Medicine Berlin and Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Steffen Fuchs
- Experimental and Clinical Research Center, Charité University Medicine Berlin and Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Ulrike Stein
- Experimental and Clinical Research Center, Charité University Medicine Berlin and Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany.,German Cancer Consortium (DKTK), Heidelberg, Germany
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7
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UHRF1 is a sensor for DNA interstrand crosslinks and recruits FANCD2 to initiate the Fanconi anemia pathway. Cell Rep 2015; 10:1947-56. [PMID: 25801034 PMCID: PMC4386029 DOI: 10.1016/j.celrep.2015.02.053] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 02/12/2015] [Accepted: 02/23/2015] [Indexed: 12/12/2022] Open
Abstract
The Fanconi anemia (FA) pathway is critical for the cellular response to toxic DNA interstrand crosslinks (ICLs). Using a biochemical purification strategy, we identified UHRF1 as a protein that specifically interacts with ICLs in vitro and in vivo. Reduction of cellular levels of UHRF1 by RNAi attenuates the FA pathway and sensitizes cells to mitomycin C. Knockdown cells display a drastic reduction in FANCD2 foci formation. Using live-cell imaging, we observe that UHRF1 is rapidly recruited to chromatin in response to DNA crosslinking agents and that this recruitment both precedes and is required for the recruitment of FANCD2 to ICLs. Based on these results, we describe a mechanism of ICL sensing and propose that UHRF1 is a critical factor that binds to ICLs. In turn, this binding is necessary for the subsequent recruitment of FANCD2, which allows the DNA repair process to initiate. UHRF1 is a sensor for DNA interstrand crosslinks (ICLs) UHRF1 is recruited to ICLs within seconds of their appearance in the genome Recruitment of UHRF1 is required for proper recruitment of FANCD2 to ICLs UHRF1 is an integral part of the Fanconi anemia DNA repair pathway
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8
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Shepelev MV, Chernoff J, Korobko IV. Rho family GTPase Chp/RhoV induces PC12 apoptotic cell death via JNK activation. Small GTPases 2014; 2:17-26. [PMID: 21686277 DOI: 10.4161/sgtp.2.1.15229] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2010] [Revised: 02/18/2011] [Accepted: 02/21/2011] [Indexed: 12/16/2022] Open
Abstract
Rho GTPases regulate numerous cellular processes including apoptosis. Chp/RhoV is an atypical Rho GTPase which functions are poorly understood. Here we investigated the role of Chp in regulation of cell viability using PC12 cells with inducible expression of Chp as a model. We found that expression of Chp results in apoptosis in PC12 cells. Chp-induced apoptosis was accompanied by activation of JNK signaling and both death receptor-mediated and mitochondrial apoptotic pathways as justified by caspase-8 and caspase-9 activation, respectively. Moreover, inhibition of JNK by SP600125 rescued PC12 cells from Chp-triggered cell death and attenuated activation of caspases-9 and -3/7 suggesting that activation of JNK mediates pro-apoptotic effect of Chp. Expression of Chp resulted in increased phosphorylation of c-Jun in PC12 cells, and Chp expression in HE K293 cells upregulated AP-1-dependent transcription in a JNK-dependent manner. Together results of our study reveal the role of Chp GTPase as a putative regulator of JNK-dependent apoptotic death in PC12 cells, similarly to previously described pro-apoptotic activity of the related Cdc42 and Rac1 GTPases.
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Affiliation(s)
- Mikhail V Shepelev
- Laboratory of Molecular Oncogenetics; Institute of Gene Biology; Russian Academy of Sciences; Moscow, Russia
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9
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Ca(2+)-binding protein expression in primary human thyrocytes. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2013; 1833:2703-2713. [PMID: 23886630 DOI: 10.1016/j.bbamcr.2013.07.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 06/04/2013] [Accepted: 07/15/2013] [Indexed: 01/06/2023]
Abstract
We recently identified several Ca(2+)-binding proteins (CaBP) from the S100 and annexin family to be regulated by TSH in FRTL-5 cells. Here, we study the regulation of S100A4, S100A6 and ANXA2 in primary human thyrocytes (PHT) derived from surrounding tissues (ST), cold benign thyroid nodules (CTN) and autonomously functioning thyroid nodules (AFTN). We investigated the expression and regulation of CaBP and the effect of their expression on Ca(2+) and TSHR signaling. We used an approach that accounts for the potential of an individual PHT culture to proliferate or to express thyroid differentiation features by assessing the expression of FOS and TPO. We found a strong correlation between the regulation of CaBP and the proliferation-associated transcription factor gene FOS. PKA and MEK1/2 were regulators of ANXA2 expression, while PI3-K and triiodothyronine were additionally involved in S100 regulation. The modulated expression of CaBP was reflected by changes in ATP-elicited Ca(2+) signaling in PHT. S100A4 increased the ratio of subsequent Ca(2+) responses and showed a Ca(2+) buffering effect, while ANXA2 affected the first Ca(2+) response to ATP. Overexpression of S100A4 led to a reduced activation of NFAT by TSH. Using S100A4 E33Q, D63N, F72Q and Y75K mutants we found that the effects of S100A4 expression on Ca(2+) signaling are mediated by protein interaction. We present evidence that TSH has the ability to fine-tune Ca(2+) signals through the regulation of CaBP expression. This represents a novel putative cross-regulating mechanism in thyrocytes that could affect thyrocyte signaling and physiology.
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10
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Zheng X, Gai X, Wu Z, Liu Q, Yao Y. Metastasin leads to poor prognosis of hepatocellular carcinoma through partly inducing EMT. Oncol Rep 2013; 29:1811-8. [PMID: 23483190 DOI: 10.3892/or.2013.2341] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Accepted: 01/18/2013] [Indexed: 11/06/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is a common malignant cancer worldwide characterized by high metastatic potential and poor prognosis following radical resection. Metastasin is a Ca(2+)-binding protein associated with tumor metastasis. However, the expression and function of metastasin remain unknown. In the present study, we found that the expression of metastasin was upregulated in HCC tissues and positively correlated with poor prognosis following radical resection. Ectopic expression of metastasin in vitro induced typical epithelial-mesenchymal transition (EMT) in Hep3B cells including higher capacity of both migration and invasion, increased expression of both Vimentin and N-cadherin and decreased expression of E-cadherin. Knockdown of metastasin produced the opposite results in MHCC97H cells, which indicates that metastasin promotes HCC progression via induction of EMT. SNAI1 expression was upregulated by enforced expression of metastasin and, consequently, suppressing upregulation of SNAI1 secondary to metastasin overexpression abolished EMT. Collectively, the present results suggest that metastasin leads to HCC EMT partly through upregulating SNAI1 and contributes to poor prognosis following radical liver resection.
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Affiliation(s)
- Xin Zheng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China
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11
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Maletzki C, Bodammer P, Breitrück A, Kerkhoff C. S100 proteins as diagnostic and prognostic markers in colorectal and hepatocellular carcinoma. HEPATITIS MONTHLY 2012; 12:e7240. [PMID: 23166536 PMCID: PMC3500829 DOI: 10.5812/hepatmon.7240] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2012] [Revised: 07/04/2012] [Accepted: 07/16/2012] [Indexed: 12/11/2022]
Abstract
CONTEXT Clinical and experimental studies have suggested a link between S100 gene ex-pression and neoplastic disorders, however, the molecular mechanisms of this associa-tion are not well understood. The aim of this review was to conduct a comprehensive literature search in order to understand the possible underlying molecular mechanisms of this association. We also discuss their application as diagnostic and prognostic mark-ers in colorectal and hepatocellular carcinoma. EVIDENCE ACQUISITIONS We searched Pubmed (NLM) and Web of Science (ISI Web of Knowledge). RESULTS S100 genes display a complex expression pattern in colorectal and hepatocel- lular carcinoma. They are expressed in tumor and/or tumor stroma cells, and they exert both pro- and antitumorigenic actions. In view of this complexity, it becomes clear that S100 proteins might act as both friend and foe. The biological role of the S100 genes is predicted to depend on the relative contributions of the different cell types at specific stages of tumor progression. CONCLUSIONS Further research is required in order to uncover the functional role of S100 genes in tumorigenesis. Answers to this issue are needed before we can more fully un-derstand the clinical relevance of S100 protein expression within epithelial tumors, with regard to their potential applicability as biomarkers for diagnosis and therapy decisions.
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Affiliation(s)
- Claudia Maletzki
- Department of General Surgery, Division of Molecular Oncology and Immunotherapy, University of Rostock, Rostock, Germany
| | - Peggy Bodammer
- Department of General Surgery, Division of Gastroenterology, University of Rostock, Rostock, Germany
- Fraunhofer Institute for Cell Therapy and Immunology, Department of Immunology, AG “Extracorporeal Immune Modulation (EXIM)”, Rostock, Germany
| | - Anne Breitrück
- Fraunhofer Institute for Cell Therapy and Immunology, Department of Immunology, AG “Extracorporeal Immune Modulation (EXIM)”, Rostock, Germany
- Department of Internal Medicine, Division of Nephrology, University of Rostock, Rostock, Germany
| | - Claus Kerkhoff
- Fraunhofer Institute for Cell Therapy and Immunology, Department of Immunology, AG “Extracorporeal Immune Modulation (EXIM)”, Rostock, Germany
- Department of Internal Medicine, Division of Nephrology, University of Rostock, Rostock, Germany
- Corresponding author: Claus Kerkhoff, Fraunhofer Institute for Cell Therapy and Immunology, Department of Immunology, AG EXIM, Schillingallee 68/69, 18057 Rostock, Germany. Tel.: +49-3814947368, Fax: +49-32122701962, E-mail:
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Mishra SK, Siddique HR, Saleem M. S100A4 calcium-binding protein is key player in tumor progression and metastasis: preclinical and clinical evidence. Cancer Metastasis Rev 2012; 31:163-72. [PMID: 22109080 DOI: 10.1007/s10555-011-9338-4] [Citation(s) in RCA: 125] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The fatality of cancer is mainly bestowed to the property of otherwise benign tumor cells to become malignant and invade surrounding tissues by circumventing normal tissue barriers through a process called metastasis. S100A4 which is a member of the S100 family of calcium-binding proteins has been shown to be able to activate and integrate pathways both intracellular and extracellular to generate a phenotypic response characteristic of cancer metastasis. A large number of studies have shown an increased expression level of S100A4 in various types of cancers. However, its implications in cancer metastasis in terms of whether an increased expression of S100A4 is a causal factor for metastasis or just another after effect of several other physiological and molecular changes in the body resulting from metastasis are not clear. Here we describe the emerging preclinical and clinical evidences implicating S100A4 protein, in both its forms (intracellular and extracellular) in the process of tumorigenesis and metastasis in humans. Based on studies utilizing S100A4 as a metastasis biomarker and molecular target for therapies such as gene therapy, we suggest that S100A4 has emerged as a promising molecule to be tested for anticancer drugs. This review provides an insight in the (1) molecular mechanisms through which S100A4 drives the tumorigenesis and metastasis and (2) developments made in the direction of evaluating S100A4 as a cancer biomarker and drug target.
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Affiliation(s)
- Shrawan Kumar Mishra
- Department of Molecular Chemoprevention and Therapeutics, University of Minnesota, Austin, MN 55912, USA
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13
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Huang B, Liu B, Yang L, Li Y, Cheng M, Huang D, Wang H, Zhang X, Zheng J, Li Q, Ji W, Zhou Y, Lu J. Functional genetic variants of c-Jun and their interaction with smoking and drinking increase the susceptibility to lung cancer in southern and eastern Chinese. Int J Cancer 2012; 131:E744-58. [DOI: 10.1002/ijc.27407] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Accepted: 11/24/2011] [Indexed: 01/30/2023]
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14
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Pakay JL, Diesch J, Gilan O, Yip YY, Sayan E, Kolch W, Mariadason JM, Hannan RD, Tulchinsky E, Dhillon AS. A 19S proteasomal subunit cooperates with an ERK MAPK-regulated degron to regulate accumulation of Fra-1 in tumour cells. Oncogene 2011; 31:1817-24. [DOI: 10.1038/onc.2011.375] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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15
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Zhang R, Fu H, Chen D, Hua J, Hu Y, Sun K, Sun X. Subcellular distribution of S100A4 and its transcriptional regulation under hypoxic conditions in gastric cancer cell line BGC823. Cancer Sci 2010; 101:1141-6. [PMID: 20367639 PMCID: PMC11158214 DOI: 10.1111/j.1349-7006.2010.01533.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
It is well known that S100A4 is overexpressed in many tumors and involved in tumor invasion and metastasis. But the regulation of it is ill understood. We previously found that hypoxia mimicking cobalt chloride (CoCl(2)) enhanced the mRNA and protein expressions of the S100A4 gene in the gastric cancer cell line BGC823. In this study we found that S100A4 also displayed increased expression in BGC823 cells after exposure to real hypoxia (2.5% O(2)) as that by CoCl(2) treatment. Moreover, S100A4 protein showed different subcellular distribution under real hypoxia compared with that by CoCl(2) treatment or in normoxic conditions. To investigate the underlying molecular mechanism by which hypoxia regulates the expression of S100A4, we analyzed the regulatory sequences of the genes by bioinformatics and found a putative hypoxia responsive element (HRE) motif in the first intron of S1004. Furthermore, luciferase reporter assay showed that it is responsive to hypoxia. Electrophoretic mobility shift assay and chromatin immunoprecipitation assays demonstrated that hypoxia-inducible factor 1 (HIF-1) binds to the functional HRE in vitro and in vivo. The results provide evidence that S100A4 is a hypoxia-inducible gene, whose transcription is stimulated at least partly through the interaction of HIF-1 and HRE located at +329 to +334 of S100A4.
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Affiliation(s)
- Ruixiu Zhang
- Department of Medical Genetics, China Medical University, Shenyang, China
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16
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Boye K, Maelandsmo GM. S100A4 and metastasis: a small actor playing many roles. THE AMERICAN JOURNAL OF PATHOLOGY 2009; 176:528-35. [PMID: 20019188 DOI: 10.2353/ajpath.2010.090526] [Citation(s) in RCA: 335] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The calcium-binding protein S100A4 promotes metastasis in several experimental animal models, and S100A4 protein expression is associated with patient outcome in a number of tumor types. S100A4 is localized in the nucleus, cytoplasm, and extracellular space and possesses a wide range of biological functions, such as regulation of angiogenesis, cell survival, motility, and invasion. In this review, we summarize the evidence connecting S100A4 and cancer metastasis and discuss the mechanisms by which S100A4 promotes tumor progression.
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Affiliation(s)
- Kjetil Boye
- Department of Tumor Biology, Institute for Cancer Research, The Norwegian Radium Hospital, Oslo University Hospital, N-0310 Oslo, Norway.
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17
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Koshelev YA, Georgiev GP, Kibardin AV. Functions of protein MTS1 (S100A4) in normal and tumor cells. RUSS J GENET+ 2008. [DOI: 10.1134/s1022795408020014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Morgan XC, Ni S, Miranker DP, Iyer VR. Predicting combinatorial binding of transcription factors to regulatory elements in the human genome by association rule mining. BMC Bioinformatics 2007; 8:445. [PMID: 18005433 PMCID: PMC2211755 DOI: 10.1186/1471-2105-8-445] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2007] [Accepted: 11/15/2007] [Indexed: 12/20/2022] Open
Abstract
Background Cis-acting transcriptional regulatory elements in mammalian genomes typically contain specific combinations of binding sites for various transcription factors. Although some cis-regulatory elements have been well studied, the combinations of transcription factors that regulate normal expression levels for the vast majority of the 20,000 genes in the human genome are unknown. We hypothesized that it should be possible to discover transcription factor combinations that regulate gene expression in concert by identifying over-represented combinations of sequence motifs that occur together in the genome. In order to detect combinations of transcription factor binding motifs, we developed a data mining approach based on the use of association rules, which are typically used in market basket analysis. We scored each segment of the genome for the presence or absence of each of 83 transcription factor binding motifs, then used association rule mining algorithms to mine this dataset, thus identifying frequently occurring pairs of distinct motifs within a segment. Results Support for most pairs of transcription factor binding motifs was highly correlated across different chromosomes although pair significance varied. Known true positive motif pairs showed higher association rule support, confidence, and significance than background. Our subsets of high-confidence, high-significance mined pairs of transcription factors showed enrichment for co-citation in PubMed abstracts relative to all pairs, and the predicted associations were often readily verifiable in the literature. Conclusion Functional elements in the genome where transcription factors bind to regulate expression in a combinatorial manner are more likely to be predicted by identifying statistically and biologically significant combinations of transcription factor binding motifs than by simply scanning the genome for the occurrence of binding sites for a single transcription factor.
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Affiliation(s)
- Xochitl C Morgan
- Institute for Cellular and Molecular Biology and Center for Systems and Synthetic Biology, The University of Texas at Austin, Austin, Texas 78712-0159, USA.
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19
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Venkov CD, Link AJ, Jennings JL, Plieth D, Inoue T, Nagai K, Xu C, Dimitrova YN, Rauscher FJ, Neilson EG. A proximal activator of transcription in epithelial-mesenchymal transition. J Clin Invest 2007; 117:482-91. [PMID: 17273560 PMCID: PMC1783826 DOI: 10.1172/jci29544] [Citation(s) in RCA: 138] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2006] [Accepted: 12/05/2006] [Indexed: 12/26/2022] Open
Abstract
Epithelial-mesenchymal transition (EMT) is an important mechanism for phenotypic conversion in normal development and disease states such as tissue fibrosis and metastasis. While this conversion of epithelia is under tight transcriptional control, few of the key transcriptional proteins are known. Fibroblasts produced by EMT express a gene encoding fibroblast-specific protein 1 (FSP1), which is regulated by a proximal cis-acting promoter element called fibroblast transcription site-1 (FTS-1). In mass spectrometry, chromatin immunoprecipitation, and siRNA studies, we used FTS-1 as a unique probe for mediators of EMT and identified a complex of 2 proteins, CArG box-binding factor-A (CBF-A) and KRAB-associated protein 1 (KAP-1), that bind this site. Epithelial cells engineered to conditionally express recombinant CBF-A (rCBF-A) activate the transcription of FSP1 and undergo EMT. The FTS-1 response element also exists in the promoters modulating a broader EMT transcriptome, including Twist, and Snail, as well as E-cadherin, beta-catenin, ZO 1, vimentin, alpha1(I) collagen, and alpha-smooth muscle actin, and the induction of rCBF-A appropriately alters their expression as well. We believe formation of the CBF-A/KAP-1/FTS-1 complex is sufficient for the induction of FSP1 and a novel proximal activator of EMT.
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Affiliation(s)
- Christo D. Venkov
- Department of Medicine,
Department of Microbiology and Immunology, and
Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.
Wistar Institute, Philadelphia, Pennsylvania, USA.
Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Andrew J. Link
- Department of Medicine,
Department of Microbiology and Immunology, and
Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.
Wistar Institute, Philadelphia, Pennsylvania, USA.
Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Jennifer L. Jennings
- Department of Medicine,
Department of Microbiology and Immunology, and
Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.
Wistar Institute, Philadelphia, Pennsylvania, USA.
Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - David Plieth
- Department of Medicine,
Department of Microbiology and Immunology, and
Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.
Wistar Institute, Philadelphia, Pennsylvania, USA.
Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Tsutomu Inoue
- Department of Medicine,
Department of Microbiology and Immunology, and
Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.
Wistar Institute, Philadelphia, Pennsylvania, USA.
Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Kojiro Nagai
- Department of Medicine,
Department of Microbiology and Immunology, and
Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.
Wistar Institute, Philadelphia, Pennsylvania, USA.
Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Carol Xu
- Department of Medicine,
Department of Microbiology and Immunology, and
Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.
Wistar Institute, Philadelphia, Pennsylvania, USA.
Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Yoana N. Dimitrova
- Department of Medicine,
Department of Microbiology and Immunology, and
Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.
Wistar Institute, Philadelphia, Pennsylvania, USA.
Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Frank J. Rauscher
- Department of Medicine,
Department of Microbiology and Immunology, and
Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.
Wistar Institute, Philadelphia, Pennsylvania, USA.
Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Eric G. Neilson
- Department of Medicine,
Department of Microbiology and Immunology, and
Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.
Wistar Institute, Philadelphia, Pennsylvania, USA.
Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
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20
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Mejlvang J, Kriajevska M, Berditchevski F, Bronstein I, Lukanidin EM, Pringle JH, Mellon JK, Tulchinsky EM. Characterization of E-cadherin-dependent and -independent events in a new model of c-Fos-mediated epithelial–mesenchymal transition. Exp Cell Res 2007; 313:380-93. [PMID: 17141758 DOI: 10.1016/j.yexcr.2006.10.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2006] [Revised: 10/13/2006] [Accepted: 10/19/2006] [Indexed: 01/05/2023]
Abstract
Fos proteins have been implicated in control of tumorigenesis-related genetic programs including invasion, angiogenesis, cell proliferation and apoptosis. In this study, we demonstrate that c-Fos is able to induce mesenchymal transition in murine tumorigenic epithelial cell lines. Expression of c-Fos in MT1TC1 cells led to prominent alterations in cell morphology, increased expression of mesenchymal markers, vimentin and S100A4, DNA methylation-dependent down-regulation of E-cadherin and abrogation of cell-cell adhesion. In addition, c-Fos induced a strong beta-catenin-independent proliferative response in MT1TC1 cells and stimulated cell motility, invasion and adhesion to different extracellular matrix proteins. To explore whether loss of E-cadherin plays a role in c-Fos-mediated mesenchymal transition, we expressed wild-type E-cadherin and two different E-cadherin mutants in MT1TC1/c-fos cells. Expression of wild-type E-cadherin restored epithelioid morphology and enhanced cellular levels of catenins. However, exogenous E-cadherin did not influence expression of c-Fos-dependent genes, only partly suppressed growth of MT1TC1/c-fos cells and produced no effect on c-Fos-stimulated cell motility and invasion in matrigel. On the other hand, re-expression of E-cadherin specifically negated c-Fos-induced adhesion to collagen type I, but not to laminin or fibronectin. Of interest, mutant E-cadherin which lacks the ability to form functional adhesive complexes had an opposite, potentiating effect on cell adhesion to collagen I. These data suggest that cell adhesion to collagen I is regulated by the functional state of E-cadherin. Overall, our data demonstrate that, with the exception of adhesion to collagen I, c-Fos is dominant over E-cadherin in relation to the aspects of mesenchymal transition assayed in this study.
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Affiliation(s)
- Jakob Mejlvang
- Department of Cancer Studies and Molecular Medicine, University of Leicester, Hodgkin Bldg., Lancaster Rd, LE1 9HN, Leicester, UK
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21
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Andersen H, Mejlvang J, Mahmood S, Gromova I, Gromov P, Lukanidin E, Kriajevska M, Mellon JK, Tulchinsky E. Immediate and delayed effects of E-cadherin inhibition on gene regulation and cell motility in human epidermoid carcinoma cells. Mol Cell Biol 2005; 25:9138-50. [PMID: 16199889 PMCID: PMC1265771 DOI: 10.1128/mcb.25.20.9138-9150.2005] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
The invasion suppressor protein, E-cadherin, plays a central role in epithelial cell-cell adhesion. Loss of E-cadherin expression or function in various tumors of epithelial origin is associated with a more invasive phenotype. In this study, by expressing a dominant-negative mutant of E-cadherin (Ec1WVM) in A431 cells, we demonstrated that specific inhibition of E-cadherin-dependent cell-cell adhesion led to the genetic reprogramming of tumor cells. In particular, prolonged inhibition of cell-cell adhesion activated expression of vimentin and repressed cytokeratins, suggesting that the effects of Ec1WVM can be classified as epithelial-mesenchymal transition. Both short-term and prolonged expression of Ec1WVM resulted in morphological transformation and increased cell migration though to different extents. Short-term expression of Ec1WVM up-regulated two AP-1 family members, c-jun and fra-1, but was insufficient to induce complete mesenchymal transition. AP-1 activity induced by the short-term expression of Ec1WVM was required for transcriptional up-regulation of AP-1 family members and down-regulation of two other Ec1WVM-responsive genes, S100A4 and igfbp-3. Using a dominant-negative mutant of c-Jun (TAM67) and RNA interference-mediated silencing of c-Jun and Fra-1, we demonstrated that AP-1 was required for cell motility stimulated by the expression of Ec1WVM. In contrast, Ec1WVM-mediated changes in cell morphology were AP-1-independent. Our data suggest that mesenchymal transition induced by prolonged functional inhibition of E-cadherin is a slow and gradual process. At the initial step of this process, Ec1WVM triggers a positive autoregulatory mechanism that increases AP-1 activity. Activated AP-1 in turn contributes to Ec1WVM-mediated effects on gene expression and tumor cell motility. These data provide novel insight into the tumor suppressor function of E-cadherin.
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Affiliation(s)
- Henriette Andersen
- Department of Cancer Studies and Molecular Medicine, University of Leicester, UK
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22
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Garrett SC, Varney KM, Weber DJ, Bresnick AR. S100A4, a mediator of metastasis. J Biol Chem 2005; 281:677-80. [PMID: 16243835 DOI: 10.1074/jbc.r500017200] [Citation(s) in RCA: 267] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Sarah C Garrett
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, New York 10461, USA
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23
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Fernandez-Fernandez MR, Veprintsev DB, Fersht AR. Proteins of the S100 family regulate the oligomerization of p53 tumor suppressor. Proc Natl Acad Sci U S A 2005; 102:4735-40. [PMID: 15781852 PMCID: PMC555715 DOI: 10.1073/pnas.0501459102] [Citation(s) in RCA: 145] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
S100B protein is elevated in the brains of patients with early stages of Alzheimer's disease and Down's syndrome. S100A4 is correlated with the development of metastasis. Both proteins bind to p53 tumor suppressor. We found that both S100B and S100A4 bind to the tetramerization domain of p53 (residues 325-355) only when exposed in lower oligomerization states and so they disrupt the tetramerization of p53. In addition, S100B binds to the negative regulatory and nuclear localization domains, which results in a very tight binding to p53 protein sequences that exposed the tetramerization domain in their C terminus. Because the trafficking of p53 depends on its oligomerization state, we suggest that S100B and S100A4 could regulate the subcellular localization of p53. But, the differences in the way these proteins bind to p53 could result in S100B and S1004 having different effects on p53 function in cell-cycle control.
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24
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Papaceit M, Orengo D, Juan E. Sequences upstream of the homologous cis-elements of the Adh adult enhancer of Drosophila are required for maximal levels of Adh gene transcription in adults of Scaptodrosophila lebanonensis. Genetics 2005; 167:289-99. [PMID: 15166155 PMCID: PMC1470848 DOI: 10.1534/genetics.167.1.289] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The evolution of cis-regulatory elements is of particular interest for our understanding of the evolution of gene regulation. The Adh gene of Drosophilidae shows interspecific differences in tissue-specific expression and transcript levels during development. In Scaptodrosophila lebanonensis adults, the level of distal transcripts is maximal between the fourth and eighth day after eclosion and is around five times higher than that in D. melanogaster Adh(S). To examine whether these quantitative differences are regulated by sequences lying upstream of the distal promoter, we performed in vitro deletion mutagenesis of the Adh gene of S. lebanonensis, followed by P-element-mediated germ-line transformation. All constructs included, as a cotransgene, a modified Adh gene of D. melanogaster (dAdh) in a fixed position and orientation that acted as a chromosomal position control. Using this approach, we have identified a fragment of 1.5 kb in the 5' region, 830 bp upstream of the distal start site, which is required to achieve maximal levels of distal transcript in S. lebanonensis. The presence of this fragment produces a 3.5-fold higher level of distal mRNA (as determined by real time quantitative PCR) compared with the D. melanogaster dAdh cotransgene. This region contains the degenerated end of a minisatellite sequence expanding farther upstream and does not correspond to the Adh adult enhancer (AAE) of D. melanogaster. Indeed, the cis-regulatory elements of the AAE have been identified by phylogenetic footprinting within the region 830 bp upstream of the distal start site of S. lebanonensis. Furthermore, the deletions Delta-830 and Delta-2358 yield the same pattern of tissue-specific expression, indicating that all tissue-specific elements are contained within the region 830 bp upstream of the distal start site.
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Affiliation(s)
- Montserrat Papaceit
- Departament de Genètica, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain
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Meng F, Zolova O, Kokorina NA, Dobretsova A, Wight PA. Characterization of an intronic enhancer that regulates myelin proteolipid protein (Plp) gene expression in oligodendrocytes. J Neurosci Res 2005; 82:346-56. [PMID: 16155935 DOI: 10.1002/jnr.20640] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The myelin proteolipid protein (Plp) gene is expressed in oligodendrocytes and encodes the most abundant protein (approximately 50%) present in mature myelin from the central nervous system (CNS). Plp gene activity is low to nonexistent early in development but sharply increases, concurrently with the active myelination period of CNS development. Work from our laboratory suggests that the temporal regulation of Plp gene expression in mice is mediated by a positive regulatory element located within Plp intron 1 DNA. We have termed this regulatory element/region ASE (for antisilencer/enhancer). The ASE is situated approximately 1 kb downstream of exon 1 DNA and encompasses nearly 100 bp. To understand the mechanisms by which the ASE augments Plp gene expression in oligodendrocytes, Plp-lacZ constructs were generated and transfected into a mouse oligodendroglial cell line (N20.1). Results presented here demonstrate that upstream regulatory elements in the Plp promoter/5'-flanking DNA are not required for ASE activity; the ASE worked perfectly well when the thymidine kinase (TK) promoter was substituted for the Plp promoter. However, the relative location of the ASE appears to be important. When placed upstream of 2.4 kb of Plp 5'-flanking DNA, or downstream of the lacZ expression cassette, the ASE was no longer effective. Thus, the ASE might have to be in the context of the intron in order to function. To begin to identify the crucial nucleotides within the ASE, orthologous sequences from rat, human, cow, and pig Plp genes were swapped for the mouse sequence. Results presented here demonstrate that the orthologous sequence from rat can substitute for the mouse ASE, unlike those from human, cow, or pig.
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Affiliation(s)
- Fanxue Meng
- Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205, USA
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Hong JW, Wu LC. Structural characterization of the gene encoding the large zinc finger protein ZAS3: implication to the origin of multiple promoters in eukaryotic genes. ACTA ACUST UNITED AC 2004; 1681:74-87. [PMID: 15627499 DOI: 10.1016/j.bbaexp.2004.10.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2004] [Revised: 09/10/2004] [Accepted: 10/05/2004] [Indexed: 11/16/2022]
Abstract
ZAS3 is a large zinc finger protein that regulates kappaB-mediated transcription and TNF-driven signal transduction pathway. Herein, we have characterized the mouse ZAS3 gene that spans 400 kb and splits into 16 exons. Four ZAS3 exons, ranging from 676 to 3956 nucleotides, are significantly larger than the average size of mammalian internal exons. Intron 10, when retained in mRNAs, encodes N-terminal DNA binding domain, called ZASN. As predicted from cDNAs, 5' untranslated region composed of the 2317 nucleotides is extremely long and contains upstream open reading frames, suggesting that translation initiation of ZAS3 transcripts by conventional cap-dependent ribosome scanning mechanism may be inefficient. Additionally, cDNA data analysis followed by reporter gene assays shows that the ZAS3 locus harbors two promoters that are 80 kb apart. The data suggest that the expression of ZAS3 is controlled by a combination of differential promoter usage, alternative splicing, and possible intergenic splicing. The distribution and degree of conservation of exons within the ZAS3 locus, together with the complex alternative splicing events and upstream open reading frame in 5' untranslated exons, lead us to speculate that multiple promoters of an eukaryotic gene might be residual traces of regulatory regions of other genes lost in evolution.
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Affiliation(s)
- Joung-Woo Hong
- Department of Molecular and Cellular Biochemistry, The Ohio State University, College of Medicine and Public Health, Columbus, OH 43210, USA
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Oukka M, Wein MN, Glimcher LH. Schnurri-3 (KRC) interacts with c-Jun to regulate the IL-2 gene in T cells. ACTA ACUST UNITED AC 2004; 199:15-24. [PMID: 14707112 PMCID: PMC1887724 DOI: 10.1084/jem.20030421] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The activator protein 1 (AP-1) transcription factor is a key participant in the control of T cell proliferation, cytokine production, and effector function. In the immune system, AP-1 activity is highest in T cells, suggesting that a subset of T cell–specific coactivator proteins exist to selectively potentiate AP-1 function. Here, we describe that the expression of Schnurri-3, also known as κ recognition component (KRC), is induced upon T cell receptor signaling in T cells and functions to regulate the expression of the interleukin 2 (IL-2) gene. Overexpression of KRC in transformed and primary T cells leads to increased IL-2 production, whereas dominant-negative KRC, or loss of KRC protein in KRC-null mice, results in diminished IL-2 production. KRC physically associates with the c-Jun transcription factor and serves as a coactivator to augment AP-1–dependent IL-2 gene transcription.
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Affiliation(s)
- Mohamed Oukka
- Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, MA 02115, USA
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EL Naaman C, Grum-Schwensen B, Mansouri A, Grigorian M, Santoni-Rugiu E, Hansen T, Kriajevska M, Schafer BW, Heizmann CW, Lukanidin E, Ambartsumian N. Cancer predisposition in mice deficient for the metastasis-associated Mts1(S100A4) gene. Oncogene 2004; 23:3670-80. [PMID: 15116098 DOI: 10.1038/sj.onc.1207420] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Metastasis-promoting Mts1(S100A4) protein belongs to the S100 family of Ca(2+)-binding proteins. A mouse strain with a germ-line inactivation of the S100A4 gene was generated. The mice were viable and did not display developmental abnormalities in the postnatal period. However, an abnormal sex ratio was observed in the litters with the S100A4-/- genotype, raising the possibility of a certain level of embryonic lethality in this strain. In all, 10% of 10-14-month-old S100A4-null animals developed tumors. This is a characteristic feature of mouse strains with inactivated tumor suppressor genes. Spontaneous tumors of S100A4-/- mice were p53 positive. Recently, we have shown that S100A4 interacts with p53 tumor suppressor protein and induces apoptosis. We proposed that impairment of this interaction could affect the apoptosis-promoting function of p53 that is involved in its tumor suppressor activity. The frequency of apoptosis in the spleen of S100A4-/- animals after whole-body gamma-irradiation was reduced compared to the wild-type animals. The same was true for the transcriptional activation of the p53 target genes - waf/p21/cip1 and bax. Taken together, these observations indicate that spontaneous tumors in S100A4-/- mice are a result of functional destabilization of p53 tumor suppressor gene.
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Affiliation(s)
- Christina EL Naaman
- Department of Molecular Cancer Biology, Danish Cancer Society, Strandboulevarden 49, DK2100 Copenhagen, Denmark
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Allen CE, Muthusamy N, Weisbrode SE, Hong JW, Wu LC. Developmental anomalies and neoplasia in animals and cells deficient in the large zinc finger protein KRC. Genes Chromosomes Cancer 2002; 35:287-98. [PMID: 12378523 DOI: 10.1002/gcc.10128] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The large zinc finger protein KRC binds to the signal sequences of V(D)J recombination and the kappaB motif. Disruption of KRC expression in cell lines resulted in increased cell proliferation, anchorage independence of growth, and uncoupling of nuclear division and cell division. In this report, the function of KRC was studied in a RAG2-deficient blastocyst complementation animal model. KRC-deficient embryonic stem cells were generated by homologous recombination and were introduced into RAG2(-/-) blastocysts to generate KRC(-/-);RAG2(-/-) chimeric mice. The lymphoid compartments of chimeras examined at 5 weeks of age were developed, suggesting that KRC is not essential for V(D)J recombination development. However, by 6 months of age, there was a marked deficit in CD4(+)CD8(+) thymocytes in the chimeras, suggesting that KRC may be involved in T-lymphocyte survival. Additionally, one chimera developed anomalies, including postaxial polydactyly, hydronephrosis, and an extragonadal malignant teratoma. DNA analysis showed that the teratoma was derived from KRC(-/-) embryonic stem cells. The teratoma had compound tissue organization and was infiltrated with B lymphocytes. Subsequently, several immortalized KRC-deficient cell lines were established from the teratoma. In this study, growth anomalies and neoplasia were observed in animals and cells deficient in KRC, and other studies have shown allelic loss occurring at the chromosomal region of the human KRC counterpart in various tumors. We propose that KRC may be a previously unidentified tumor-suppresser gene.
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Affiliation(s)
- Carl E Allen
- Program of Molecular, Cellular, and Developmental Biology, College of Medicine and Public Health, The Ohio State University, Columbus, Ohio, USA
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30
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Approaches to Modeling Stromal-Epithelial Interactions. J Urol 2002. [DOI: 10.1097/00005392-200209000-00083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
PURPOSE Techniques that can be used to examine the molecular mechanisms of stromal-epithelial interactions are described. MATERIALS AND METHODS A historical perspective of available techniques is provided. Recent developments and examples are used to illustrate and provide descriptive literature references for these methods. Since the possibilities for manipulating experimental systems are enormous and rapidly expanding, the reader should be aware that this review is an overview of how data have been and could be obtained rather than a comprehensive listing of what has been achieved. This review focuses on studies performed in the organs of the urogenital tract to illustrate techniques that are available.RESULTS Recent technological innovations have impacted our ability to manipulate specific components and pathways of stromal-epithelial interactions. They include rapid developments in transgenic and gene knockout mouse technology, and the development of highly efficacious gene delivery and expression systems. CONCLUSIONS These technologies have the potential to transform our understanding of the mechanistic basis of intercellular communication and point the way toward new therapeutic approaches for benign and malignant proliferative conditions.
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Affiliation(s)
- Simon W Hayward
- Department of Urologic Surgery, Valderbilt-Ingram Comprehensive Cancer Center, Nashville, Tennessee, USA
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Hicar MD, Robinson ML, Wu LC. Embryonic expression and regulation of the large zinc finger protein KRC. Genesis 2002; 33:8-20. [PMID: 12001065 DOI: 10.1002/gene.10084] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
KRC fusion proteins bind to the kappaB enhancer motif and to the signal sequences of V(D)J recombination. Here we have characterized endogenous KRC in mouse embryos and lymphoma cell lines. Starting from midgestation, neuronal- and lymphoid-restricted expression of KRC was observed from the dorsal root ganglia, trigeminal ganglion, thymus, and cerebral cortex. Several B-cell lines produced an alternatively spliced KRC transcript of 4.5 kb and a 115-kDa DNA-binding protein isoform. Additionally, that KRC transcript was induced by lipopolysaccharide, a potent activator of cells in immunity and inflammation. In genetic-engineered B cells stably transfected with inducible expression vectors for the recombination activating genes RAG1, RAG2, or both, the avidity of KRC to DNA was markedly decreased when RAG1 and RAG2 were overexpressed. We hypothesize that KRC may function in developing thymocytes and neurons, where its role might be transcription regulation or DNA recombination.
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Affiliation(s)
- Mark D Hicar
- Department of Molecular Virology, Immunology and Medical Genetics, The Ohio State University, College of Medicine and Public Health, Columbus 43210, USA
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Mazzucchelli L. Protein S100A4: too long overlooked by pathologists? THE AMERICAN JOURNAL OF PATHOLOGY 2002; 160:7-13. [PMID: 11786392 PMCID: PMC1867142 DOI: 10.1016/s0002-9440(10)64342-8] [Citation(s) in RCA: 108] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
A ZAS gene encodes a large protein with two separate C2H2 zinc finger pairs that independently bind to specific DNA sequences, including the kappaB motif. Three paralogous mammalian genes, ZAS1, ZAS2, and ZAS3, and a related Drosophila gene, Schnurri, have been cloned and characterized. The ZAS genes encode transcriptional proteins that activate or repress the transcription of a variety of genes involved in growth, development, and metastasis. In addition, ZAS3 associates with a TNF receptor-associated factor to inhibit NF-kappaB- and JNK/ SAPK-mediated signaling of TNF-alpha. Genetic experiments show that ZAS3 deficiency leads to proliferation of cells and tumor formation in mice. The data suggest that ZAS3 is important in controlling cell growth, apoptosis, and inflammation. The potent vasoactive hormone endothelin and transcription factor AP2 gene families also each consist of three members. The ZAS, endothelin, and transcription factor AP2 genes form several linkage groups. Knowledge of the chromosomal locations of these genes provides valuable clues to the evolution of the vertebrate genome.
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Affiliation(s)
- Lai-Chu Wu
- Department of Molecular and Cellular Biochemistry, The Ohio State University, College of Medicine and Public Health, Columbus 43210, USA.
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