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  1. Book: UEBER DIE HAEUFIGKEIT UND DEN THERAPEUTISCHEN EFFEKT DER BEI ENTZUENDLICHEN GELENK- UND WIRBELSAEULENERKRANKUNGEN DURCHGEFUEHRTEN HERDSANIERUNGEN

    Zenz, Rainer

    1977  

    Size 42 S.
    Document type Book
    Note MAINZ, UNIV., FACHBEREICH 05-10 - MEDIZIN, DISS., 1977
    HBZ-ID HT002590846
    Database Catalogue ZB MED Medicine, Health

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  2. Article: Jun signalling in the epidermis: From developmental defects to psoriasis and skin tumors.

    Zenz, Rainer / Wagner, Erwin F

    The international journal of biochemistry & cell biology

    2006  Volume 38, Issue 7, Page(s) 1043–1049

    Abstract: The Jun proteins Jun, JunB and JunD are core members of activator protein-1 (AP-1), a dimeric transcription factor complex consisting of homo- and heterodimers of the Jun, Fos, activating transcription factor (ATF) and musculoaponeurotic fibrosarcoma ( ... ...

    Abstract The Jun proteins Jun, JunB and JunD are core members of activator protein-1 (AP-1), a dimeric transcription factor complex consisting of homo- and heterodimers of the Jun, Fos, activating transcription factor (ATF) and musculoaponeurotic fibrosarcoma (Maf) families. Growth factors, hormones and a variety of environmental stresses activate mitogen activated protein kinase (MAPK) cascades that enhance Jun/AP-1 activity, e.g. through phosphorylation thereby regulating cell proliferation, differentiation, transformation and/or apoptosis. Embryonic lethality of various AP-1 knock-outs, e.g. for Jun, JunB, Fra-1 and Fra-2 largely prevented functional studies in vivo. Therefore, conditional knock-out strategies, in particular for the epidermis, have become an important model to study the regulation and function of AP-1 subunits in physiological and pathological processes in vivo. Jun is regarded as a positive regulator of keratinocyte proliferation/differentiation during development and in skin cancer through its direct transcriptional effect on epidermal growth factor receptor (EGFR) expression. In contrast, JunB can antagonize proliferation of keratinocytes and hematopoietic stem cells. Furthermore, it has been demonstrated in patient's samples and an inducible mouse model that down-regulation of JunB/AP-1 in keratinocytes is one initiating event in the aetiology of psoriasis which is characterized by increased cell proliferation and deregulated cytokine expression.
    MeSH term(s) Activating Transcription Factors/metabolism ; Animals ; DNA-Binding Proteins/metabolism ; Developmental Biology ; Epidermis/metabolism ; Humans ; Keratinocytes/metabolism ; MAP Kinase Kinase 1/metabolism ; Mice ; Proto-Oncogene Proteins c-fos/metabolism ; Proto-Oncogene Proteins c-jun/metabolism ; Psoriasis/physiopathology ; Signal Transduction/physiology ; Skin Neoplasms/physiopathology ; Transcription Factor AP-1/metabolism ; Transcription Factors/metabolism
    Chemical Substances Activating Transcription Factors ; DNA-Binding Proteins ; Proto-Oncogene Proteins c-fos ; Proto-Oncogene Proteins c-jun ; Transcription Factor AP-1 ; Transcription Factors ; MAP Kinase Kinase 1 (EC 2.7.12.2)
    Language English
    Publishing date 2006
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 1228429-4
    ISSN 1878-5875 ; 1357-2725
    ISSN (online) 1878-5875
    ISSN 1357-2725
    DOI 10.1016/j.biocel.2005.11.011
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: STAT3 promotes melanoma metastasis by CEBP-induced repression of the MITF pathway.

    Swoboda, Alexander / Soukup, Robert / Eckel, Oliver / Kinslechner, Katharina / Wingelhofer, Bettina / Schörghofer, David / Sternberg, Christina / Pham, Ha T T / Vallianou, Maria / Horvath, Jaqueline / Stoiber, Dagmar / Kenner, Lukas / Larue, Lionel / Poli, Valeria / Beermann, Friedrich / Yokota, Takashi / Kubicek, Stefan / Krausgruber, Thomas / Rendeiro, André F /
    Bock, Christoph / Zenz, Rainer / Kovacic, Boris / Aberger, Fritz / Hengstschläger, Markus / Petzelbauer, Peter / Mikula, Mario / Moriggl, Richard

    Oncogene

    2020  Volume 40, Issue 6, Page(s) 1091–1105

    Abstract: Metastatic melanoma is hallmarked by its ability of phenotype switching to more slowly proliferating, but highly invasive cells. Here, we tested the impact of signal transducer and activator of transcription 3 (STAT3) on melanoma progression in ... ...

    Abstract Metastatic melanoma is hallmarked by its ability of phenotype switching to more slowly proliferating, but highly invasive cells. Here, we tested the impact of signal transducer and activator of transcription 3 (STAT3) on melanoma progression in association with melanocyte inducing transcription factor (MITF) expression levels. We established a mouse melanoma model for deleting Stat3 in melanocytes with specific expression of human hyperactive NRAS
    MeSH term(s) Animals ; CCAAT-Enhancer-Binding Protein-beta/genetics ; Cell Line, Tumor ; Cell Proliferation/drug effects ; Disease Models, Animal ; Gene Expression Regulation, Neoplastic/drug effects ; Humans ; Melanocytes/drug effects ; Melanoma/genetics ; Melanoma/pathology ; Mice ; Microphthalmia-Associated Transcription Factor/genetics ; Neoplasm Metastasis ; STAT3 Transcription Factor/genetics ; Signal Transduction/drug effects
    Chemical Substances CCAAT-Enhancer-Binding Protein-beta ; Cebpb protein, mouse ; Microphthalmia-Associated Transcription Factor ; Mitf protein, mouse ; STAT3 Transcription Factor ; Stat3 protein, mouse
    Language English
    Publishing date 2020-12-15
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 639046-8
    ISSN 1476-5594 ; 0950-9232
    ISSN (online) 1476-5594
    ISSN 0950-9232
    DOI 10.1038/s41388-020-01584-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: PhiC31-mediated cassette exchange into a bacterial artificial chromosome.

    Blaas, Leander / Musteanu, Monica / Zenz, Rainer / Eferl, Robert / Casanova, Emilio

    BioTechniques

    2007  Volume 43, Issue 5, Page(s) 659–60, 662, 664

    Abstract: The use of bacterial artificial chromosomes (BACs) modified via homologous recombination in Escherichia coli has become a powerful tool in the transgenic field. Homologous recombination allows the manipulation of BACs in very different ways. However this ...

    Abstract The use of bacterial artificial chromosomes (BACs) modified via homologous recombination in Escherichia coli has become a powerful tool in the transgenic field. Homologous recombination allows the manipulation of BACs in very different ways. However this process can be cumbersome and problematic when using large targeting constructs containing several repeated elements. In order to address this problem, we have established a phiC31 integrase-mediated cassette exchange into a BAC. As an example of this technique, we have exchanged a cassette previously recombined into a BAC containing the Rosa 26 locus, by a 16.5-kb incoming construct containing several repeated elements. The combination of homologous recombination in E. coli and cassette exchange should expand the tools for manipulating BACs, thus facilitating the generation of constructs with higher complexity.
    MeSH term(s) Bacteriophages/enzymology ; Chromosomes, Artificial, Bacterial/genetics ; Integrases/metabolism ; Mutagenesis, Insertional/methods
    Chemical Substances Integrases (EC 2.7.7.-)
    Language English
    Publishing date 2007-11
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 48453-2
    ISSN 1940-9818 ; 0736-6205
    ISSN (online) 1940-9818
    ISSN 0736-6205
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Simultaneous generation of fra-2 conditional and fra-2 knock-out mice.

    Eferl, Robert / Zenz, Rainer / Theussl, Hans-Christian / Wagner, Erwin F

    Genesis (New York, N.Y. : 2000)

    2007  Volume 45, Issue 7, Page(s) 447–451

    Abstract: Loss of function mouse models comprise knock-out mice, where a gene is deleted in the germline, and conditional knock-out mice with somatic deletion of a floxed allele in defined tissues. Both types of mice are used for comprehensive studies of gene ... ...

    Abstract Loss of function mouse models comprise knock-out mice, where a gene is deleted in the germline, and conditional knock-out mice with somatic deletion of a floxed allele in defined tissues. Both types of mice are used for comprehensive studies of gene functions in vivo. Here, we describe a simple method for simultaneous generation of mice with conditional or knock-out alleles for the transcription factor fra-2 (Fos-related antigen 2) using a single embryonic stem (ES) cell clone. ES cells with a floxed fra-2 allele were transiently transfected with a Cre-recombinase expression plasmid and plated at low density. Most of the resulting ES cell colonies consisted of a mixture of cells that have either retained or lost the conditional allele. We demonstrate that these mixed ES cell clones can be directly used for generation of chimeras that give rise to offspring with conditional or knock-out alleles simultaneously. This strategy shortens the time and reduces the number of germline transmission events to generate genetically modified mice.
    MeSH term(s) Animals ; Fos-Related Antigen-2/deficiency ; Fos-Related Antigen-2/genetics ; Genes, Lethal ; Mice ; Mice, Knockout
    Chemical Substances Fos-Related Antigen-2 ; Fosl2 protein, mouse
    Language English
    Publishing date 2007-07
    Publishing country United States
    Document type Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2004544-X
    ISSN 1526-968X ; 1526-954X
    ISSN (online) 1526-968X
    ISSN 1526-954X
    DOI 10.1002/dvg.20311
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Differentiation-induced skin cancer suppression by FOS, p53, and TACE/ADAM17.

    Guinea-Viniegra, Juan / Zenz, Rainer / Scheuch, Harald / Jiménez, María / Bakiri, Latifa / Petzelbauer, Peter / Wagner, Erwin F

    The Journal of clinical investigation

    2012  Volume 122, Issue 8, Page(s) 2898–2910

    Abstract: Squamous cell carcinomas (SCCs) are heterogeneous and aggressive skin tumors for which innovative, targeted therapies are needed. Here, we identify a p53/TACE pathway that is negatively regulated by FOS and show that the FOS/p53/TACE axis suppresses SCC ... ...

    Abstract Squamous cell carcinomas (SCCs) are heterogeneous and aggressive skin tumors for which innovative, targeted therapies are needed. Here, we identify a p53/TACE pathway that is negatively regulated by FOS and show that the FOS/p53/TACE axis suppresses SCC by inducing differentiation. We found that epidermal Fos deletion in mouse tumor models or pharmacological FOS/AP-1 inhibition in human SCC cell lines induced p53 expression. Epidermal cell differentiation and skin tumor suppression were caused by a p53-dependent transcriptional activation of the metalloprotease TACE/ADAM17 (TNF-α-converting enzyme), a previously unknown p53 target gene that was required for NOTCH1 activation. Although half of cutaneous human SCCs display p53-inactivating mutations, restoring p53/TACE activity in mouse and human skin SCCs induced tumor cell differentiation independently of the p53 status. We propose FOS/AP-1 inhibition or p53/TACE reactivating strategies as differentiation-inducing therapies for SCCs.
    MeSH term(s) ADAM Proteins/genetics ; ADAM Proteins/metabolism ; ADAM17 Protein ; Animals ; Base Sequence ; Carcinoma, Squamous Cell/genetics ; Carcinoma, Squamous Cell/metabolism ; Carcinoma, Squamous Cell/pathology ; Carcinoma, Squamous Cell/therapy ; Cell Differentiation ; Cell Line, Tumor ; DNA Primers/genetics ; Gene Expression ; Humans ; Keratinocytes/metabolism ; Keratinocytes/pathology ; Mice ; Mice, 129 Strain ; Mice, Inbred C57BL ; Mice, Knockout ; Mice, Transgenic ; Proto-Oncogene Proteins c-fos/antagonists & inhibitors ; Proto-Oncogene Proteins c-fos/deficiency ; Proto-Oncogene Proteins c-fos/genetics ; Proto-Oncogene Proteins c-fos/metabolism ; Signal Transduction ; Skin Neoplasms/genetics ; Skin Neoplasms/metabolism ; Skin Neoplasms/pathology ; Skin Neoplasms/therapy ; Tumor Suppressor Protein p53/genetics ; Tumor Suppressor Protein p53/metabolism
    Chemical Substances DNA Primers ; Proto-Oncogene Proteins c-fos ; Tumor Suppressor Protein p53 ; ADAM Proteins (EC 3.4.24.-) ; ADAM17 Protein (EC 3.4.24.86) ; ADAM17 protein, human (EC 3.4.24.86) ; Adam17 protein, mouse (EC 3.4.24.86)
    Language English
    Publishing date 2012-07-09
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 3067-3
    ISSN 1558-8238 ; 0021-9738
    ISSN (online) 1558-8238
    ISSN 0021-9738
    DOI 10.1172/JCI63103
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Epigenetic silencing of miR-708 enhances NF-κB signaling in chronic lymphocytic leukemia.

    Baer, Constance / Oakes, Christopher C / Ruppert, Amy S / Claus, Rainer / Kim-Wanner, Soo-Zin / Mertens, Daniel / Zenz, Thorsten / Stilgenbauer, Stephan / Byrd, John C / Plass, Christoph

    International journal of cancer

    2015  Volume 137, Issue 6, Page(s) 1352–1361

    Abstract: MicroRNAs (miRNAs) are post-transcriptional regulators of gene expression and their deregulation is involved in tumor development. Epigenetic gene silencing in cancer by DNA methylation contributes to the silencing of tumor-suppressor genes, including ... ...

    Abstract MicroRNAs (miRNAs) are post-transcriptional regulators of gene expression and their deregulation is involved in tumor development. Epigenetic gene silencing in cancer by DNA methylation contributes to the silencing of tumor-suppressor genes, including miRNAs. We have recently shown that the promoter of miR-708 is aberrantly methylated in chronic lymphocytic leukemia (CLL). To characterize the molecular signaling networks that are influenced by miR-708, we performed a luciferase-based screen evaluating the effects of ectopic miR-708 expression on leukemia-relevant signaling pathways. We found that miR-708 strongly repressed NF-κB signaling, a pathway known to be deregulated in CLL. Among the predicted miR-708 targets was IKKβ (inhibitor of kappa light polypeptide gene enhancer in B cells, kinase-β/IKBKB), a key kinase facilitating NF-κB signaling. We validated the interaction of miR-708 with the 3'-untranslated region of IKKβ and found that miR-708 overexpression represses endogenous IKKβ. Phosphorylation of the IKKβ target IκBα and expression of known NF-κB target genes were impaired by miR-708. Furthermore, we identified an enhancer region downstream of the miR-708 promoter that displays a distinct DNA methylation status in CLL. High enhancer methylation is significantly correlated with lower miR-708 expression and is predominantly found in patients with poor prognosis and shorter time to treatment. These results demonstrate that miR-708 regulates the NF-κB pathway by targeting IKKβ, and that methylation of a key enhancer region contributes to its suppression in CLL.
    MeSH term(s) 3' Untranslated Regions/genetics ; Cell Line ; DNA Methylation/genetics ; Epigenesis, Genetic/genetics ; Gene Expression Regulation, Neoplastic/genetics ; Gene Silencing/physiology ; HEK293 Cells ; Humans ; I-kappa B Kinase/genetics ; Leukemia, Lymphocytic, Chronic, B-Cell/genetics ; MicroRNAs/genetics ; NF-kappa B/genetics ; Phosphorylation/genetics ; Promoter Regions, Genetic/genetics ; Signal Transduction/genetics
    Chemical Substances 3' Untranslated Regions ; MIRN708 microRNA, human ; MicroRNAs ; NF-kappa B ; I-kappa B Kinase (EC 2.7.11.10)
    Language English
    Publishing date 2015-09-15
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 218257-9
    ISSN 1097-0215 ; 0020-7136
    ISSN (online) 1097-0215
    ISSN 0020-7136
    DOI 10.1002/ijc.29491
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: ΦC31-mediated cassette exchange into a bacterial artificial chromosome

    Leander Blaas / Monica Musteanu / Rainer Zenz / Robert Eferl / Emilio Casanova

    BioTechniques, Vol 43, Iss 5, Pp 659-

    2007  Volume 664

    Abstract: The use of bacterial artificial chromosomes (BACs) modified via homologous recombination in Escherichia coli has become a powerful tool in the transgenic field. Homologous recombination allows the manipulation of BACs in very different ways. However, ... ...

    Abstract The use of bacterial artificial chromosomes (BACs) modified via homologous recombination in Escherichia coli has become a powerful tool in the transgenic field. Homologous recombination allows the manipulation of BACs in very different ways. However, this process can be cumbersome and problematic when using large targeting constructs containing several repeated elements. In order to address this problem, we have established a ΦC31 integrase-mediated cassette exchange into a BAC. As an example of this technique, we have exchanged a cassette previously recombined into a BAC containing the Rosa 26 locus, by a 16.5-kb incoming construct containing several repeated elements. The combination of homologous recombination in E. coli and cassette exchange should expand the tools for manipulating BACs, thus facilitating the generation of constructs with higher complexity.
    Keywords Biology (General) ; QH301-705.5
    Language English
    Publishing date 2007-11-01T00:00:00Z
    Publisher Future Science Ltd
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: EGFR has a tumour-promoting role in liver macrophages during hepatocellular carcinoma formation.

    Lanaya, Hanane / Natarajan, Anuradha / Komposch, Karin / Li, Liang / Amberg, Nicole / Chen, Lei / Wculek, Stefanie K / Hammer, Martina / Zenz, Rainer / Peck-Radosavljevic, Markus / Sieghart, Wolfgang / Trauner, Michael / Wang, Hongyang / Sibilia, Maria

    Nature cell biology

    2014  Volume 16, Issue 10, Page(s) 972–977

    Abstract: Hepatocellular carcinoma (HCC) is a frequent cancer with limited treatment options and poor prognosis. Tumorigenesis has been linked with macrophage-mediated chronic inflammation and diverse signalling pathways, including the epidermal growth factor ... ...

    Abstract Hepatocellular carcinoma (HCC) is a frequent cancer with limited treatment options and poor prognosis. Tumorigenesis has been linked with macrophage-mediated chronic inflammation and diverse signalling pathways, including the epidermal growth factor receptor (EGFR) pathway. The precise role of EGFR in HCC is unknown, and EGFR inhibitors have shown disappointing clinical results. Here we discover that EGFR is expressed in liver macrophages in both human HCC and in a mouse HCC model. Mice lacking EGFR in macrophages show impaired hepatocarcinogenesis, whereas mice lacking EGFR in hepatocytes unexpectedly develop more HCC owing to increased hepatocyte damage and compensatory proliferation. Mechanistically, following interleukin-1 stimulation, EGFR is required in liver macrophages to transcriptionally induce interleukin-6, which triggers hepatocyte proliferation and HCC. Importantly, the presence of EGFR-positive liver macrophages in HCC patients is associated with poor survival. This study demonstrates a tumour-promoting mechanism for EGFR in non-tumour cells, which could lead to more effective precision medicine strategies.
    MeSH term(s) Animals ; Blotting, Western ; Carcinoma, Hepatocellular/chemically induced ; Carcinoma, Hepatocellular/genetics ; Carcinoma, Hepatocellular/metabolism ; Cells, Cultured ; Diethylnitrosamine ; ErbB Receptors/genetics ; ErbB Receptors/metabolism ; Hepatocytes/metabolism ; Humans ; Immunohistochemistry ; Interleukin-1beta/pharmacology ; Kupffer Cells/drug effects ; Kupffer Cells/metabolism ; Liver/metabolism ; Liver/pathology ; Liver Neoplasms/chemically induced ; Liver Neoplasms/genetics ; Liver Neoplasms/metabolism ; Macrophages/metabolism ; Male ; Mice, 129 Strain ; Mice, Inbred C57BL ; Mice, Inbred CBA ; Mice, Knockout ; Mice, Transgenic ; Phosphorylation/drug effects
    Chemical Substances Interleukin-1beta ; Diethylnitrosamine (3IQ78TTX1A) ; ErbB Receptors (EC 2.7.10.1)
    Language English
    Publishing date 2014-08-31
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1474722-4
    ISSN 1476-4679 ; 1465-7392
    ISSN (online) 1476-4679
    ISSN 1465-7392
    DOI 10.1038/ncb3031
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Book ; Thesis: Über die Häufigkeit und den therapeutischen Effekt der bei entzündlichen Gelenk- und Wirbelsäulenerkrankungen durchgeführten Herdsanierungen

    Zenz, Rainer

    1977  

    Author's details Rainer Zenz
    Language German
    Size 42 S
    Document type Book ; Thesis
    Thesis / German Habilitation thesis @Mainz, Univ., Fachbereich 05-10 - Medizin, Diss. : 1977
    Database Former special subject collection: coastal and deep sea fishing

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