Wienken, Magdalena

[["dc.bibliographiccitation.firstpage","68"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Molecular Cell"],["dc.bibliographiccitation.lastpage","83"],["dc.bibliographiccitation.volume","61"],["dc.contributor.author","Wienken, Magdalena"],["dc.contributor.author","Dickmanns, Antje"],["dc.contributor.author","Nemajerova, Alice"],["dc.contributor.author","Kramer, Daniela"],["dc.contributor.author","Najafova, Zeynab"],["dc.contributor.author","Weiss, Miriam"],["dc.contributor.author","Karpiuk, Oleksandra"],["dc.contributor.author","Kassem, Moustapha"],["dc.contributor.author","Zhang, Y."],["dc.contributor.author","Lozano, Guillermina"],["dc.contributor.author","Johnsen, Steven A."],["dc.contributor.author","Moll, Ute M."],["dc.contributor.author","Zhang, X."],["dc.contributor.author","Dobbelstein, Matthias"],["dc.date.accessioned","2018-11-07T10:19:27Z"],["dc.date.available","2018-11-07T10:19:27Z"],["dc.date.issued","2016"],["dc.description.abstract","The MDM2 oncoprotein ubiquitinates and antagonizes p53 but may also carry out p53-independent functions. Here we report that MDM2 is required for the efficient generation of induced pluripotent stem cells (iPSCs) from murine embryonic fibroblasts, in the absence of p53. Similarly, MDM2 depletion in the context of p53 deficiency also promoted the differentiation of human mesenchymal stem cells and diminished clonogenic survival of cancer cells. Most of the MDM2-controlled genes also responded to the inactivation of the Polycomb Repressor Complex 2 (PRC2) and its catalytic component EZH2. MDM2 physically associated with EZH2 on chromatin, enhancing the trimethylation of histone 3 at lysine 27 and the ubiquitination of histone 2A at lysine 119 (H2AK119) at its target genes. Removing MDM2 simultaneously with the H2AK119 E3 ligase Ring1B/RNF2 further induced these genes and synthetically arrested cell proliferation. In conclusion, MDM2 supports the Polycomb-mediated repression of lineage-specific genes, independent of p53."],["dc.identifier.doi","10.1016/j.molcel.2015.12.008"],["dc.identifier.isi","000372324500007"],["dc.identifier.pmid","26748827"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/41663"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Cell Press"],["dc.relation.issn","1097-4164"],["dc.relation.issn","1097-2765"],["dc.title","MDM2 Associates with Polycomb Repressor Complex 2 and Enhances Stemness-Promoting Chromatin Modifications Independent of p53"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1300"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Genes & Development"],["dc.bibliographiccitation.lastpage","1312"],["dc.bibliographiccitation.volume","30"],["dc.contributor.author","Nemajerova, Alice"],["dc.contributor.author","Kramer, Daniela"],["dc.contributor.author","Siller, Saul S."],["dc.contributor.author","Herr, Christian"],["dc.contributor.author","Shomroni, Orr"],["dc.contributor.author","Pena, Tonatiuh"],["dc.contributor.author","Suazo, Cristina Gallinas"],["dc.contributor.author","Glaser, Katharina"],["dc.contributor.author","Wildung, Merit"],["dc.contributor.author","Steffen, Henrik"],["dc.contributor.author","Sriraman, Anusha"],["dc.contributor.author","Oberle, Fabian"],["dc.contributor.author","Wienken, Magdalena"],["dc.contributor.author","Hennion, Magali"],["dc.contributor.author","Vidal, Ramon"],["dc.contributor.author","Royen, Bettina"],["dc.contributor.author","Alevra, Mihai"],["dc.contributor.author","Schild, Detlev"],["dc.contributor.author","Bals, Robert"],["dc.contributor.author","Doenitz, Juergen"],["dc.contributor.author","Riedel, Dietmar"],["dc.contributor.author","Bonn, Stefan"],["dc.contributor.author","Takemaru, Ken-Ichi"],["dc.contributor.author","Moll, Ute M."],["dc.contributor.author","Lize, Muriel"],["dc.date.accessioned","2018-11-07T10:13:24Z"],["dc.date.available","2018-11-07T10:13:24Z"],["dc.date.issued","2016"],["dc.description.abstract","Motile multiciliated cells (MCCs) have critical roles in respiratory health and disease and are essential for cleaning inhaled pollutants and pathogens from airways. Despite their significance for human disease, the transcriptional control that governs multiciliogenesis remains poorly understood. Here we identify TP73, a p53 homolog, as governing the program for airway multiciliogenesis. Mice with TP73 deficiency suffer from chronic respiratory tract infections due to profound defects in ciliogenesis and complete loss of mucociliary clearance. Organotypic airway cultures pinpoint TAp73 as necessary and sufficient for basal body docking, axonemal extension, and motility during the differentiation of MCC progenitors. Mechanistically, cross-species genomic analyses and complete ciliary rescue of knockout MCCs identify TAp73 as the conserved central transcriptional integrator of multiciliogenesis. TAp73 directly activates the key regulators FoxJ1, Rfx2, Rfx3, and miR34bc plus nearly 50 structural and functional ciliary genes, some of which are associated with human ciliopathies. Our results position TAp73 as a novel central regulator of MCC differentiation."],["dc.identifier.doi","10.1101/gad.279836.116"],["dc.identifier.isi","000378084000006"],["dc.identifier.pmid","27257214"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/40428"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Cold Spring Harbor Lab Press, Publications Dept"],["dc.relation.issn","1549-5477"],["dc.relation.issn","0890-9369"],["dc.title","TAp73 is a central transcriptional regulator of airway multiciliogenesis"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","74"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Journal of Molecular Cell Biology"],["dc.bibliographiccitation.lastpage","80"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Wienken, Magdalena"],["dc.contributor.author","Moll, Ute M."],["dc.contributor.author","Dobbelstein, Matthias"],["dc.date.accessioned","2018-11-07T10:27:51Z"],["dc.date.available","2018-11-07T10:27:51Z"],["dc.date.issued","2017"],["dc.description.abstract","Mdm2 is the key negative regulator of the tumour suppressor p53, making it an attractive target for anti-cancer drug design. We recently identified a new role of Mdm2 in gene repression through its direct interaction with several proteins of the polycomb group (PcG) family. PcG proteins form polycomb repressive complexes PRC1 and PRC2. PRC2 (via EZH2) mediates histone 3 lysine 27 (H3K27) trimethylation, and PRC1 (via RING1B) mediates histone 2A lysine 119 (H2AK119) monoubiquitination. Both PRCs mostly support a compact and transcriptionally silent chromatin structure. We found that Mdm2 regulates a gene expression profile similar to that of PRC2 independent of p53. Moreover, Mdm2 promotes the stemness of murine induced pluripotent stem cells and human mesenchymal stem cells, and supports the survival of tumour cells. Mdm2 is recruited to target gene promoters by the PRC2 member and histone methyltransferase EZH2, and enhances PRC-dependent repressive chromatin modifications, specifically H3K27me3 and H2AK119ub1. Mdm2 also cooperates in gene repression with the PRC1 protein RING1B, a H2AK119 ubiquitin ligase. Here we discuss the possible implications of these p53-independent functions of Mdm2 in chromatin dynamics and in the stem cell phenotype. We propose that the p53-independent functions of Mdm2 should be taken into account for cancer drug design. So far, the majority of clinically tested Mdm2 inhibitors target its binding to p53 but do not affect the new functions of Mdm2 described here. However, when targeting the E3 ligase activity of Mdm2, a broader spectrum of its oncogenic activities might become druggable."],["dc.description.sponsorship","Else Kroner-Fresenius-Foundation; Studienstiftung des Deutschen Volkes"],["dc.identifier.doi","10.1093/jmcb/mjw046"],["dc.identifier.isi","000397087600010"],["dc.identifier.pmid","27927750"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/43308"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Oxford Univ Press"],["dc.relation.issn","1759-4685"],["dc.relation.issn","1674-2788"],["dc.title","Mdm2 as a chromatin modifier"],["dc.type","review"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]