Nolte-Kaitschick, Jessica

[["dc.bibliographiccitation.firstpage","345"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","MHR Basic science of reproductive medicine"],["dc.bibliographiccitation.lastpage","353"],["dc.bibliographiccitation.volume","15"],["dc.contributor.author","Zechner, Ulrich"],["dc.contributor.author","Nolte, Jessica"],["dc.contributor.author","Wolf, Marieke"],["dc.contributor.author","Shirneshan, Katayoon"],["dc.contributor.author","El Hajj, Nady"],["dc.contributor.author","Weise, Daniela"],["dc.contributor.author","Kaltwasser, Britta"],["dc.contributor.author","Zovoilis, Athanasios"],["dc.contributor.author","Haaf, Thomas"],["dc.contributor.author","Engel, Wolfgang"],["dc.date.accessioned","2018-11-07T08:29:31Z"],["dc.date.available","2018-11-07T08:29:31Z"],["dc.date.issued","2009"],["dc.description.abstract","Recently, several groups described the isolation of mouse spermatogonial stem cells (SSCs) and their potential to develop to embryonic stem cell (ESC)-like cells, so-called multipotent germline stem cells (mGSCs). We were the first to derive such mGSCs from SSCs isolated from adult mouse testis and, therefore, called these mGSCs multipotent adult germline stem cells (maGSCs). Here, we comparatively analyzed gene-specific and global DNA methylation profiles as well as the telomerase biology of several maGSC and male ESC lines. We show that undifferentiated maGSCs are very similar to undifferentiated male ESCs with regard to global DNA methylation, methylation of pluripotency marker gene loci, telomerase activity and telomere length. Imprinted gene methylation levels were generally lower in undifferentiated maGSCs than in undifferentiated male ESCs, but, compared with undifferentiated mGSCs derived by other groups, more similar to those of male ESCs. Differentiation of maGSCs increased the methylation of three of the four analyzed imprinted genes to almost somatic methylation patterns, but dramatically decreased global DNA methylation. Our findings further substantiate the pluripotency of maGSCs and their potential for regenerative medicine."],["dc.identifier.doi","10.1093/molehr/gap023"],["dc.identifier.isi","000265952900003"],["dc.identifier.pmid","19297418"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/16675"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Oxford Univ Press"],["dc.relation.issn","1360-9947"],["dc.title","Comparative methylation profiles and telomerase biology of mouse multipotent adult germline stem cells and embryonic stem cells"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2862"],["dc.bibliographiccitation.issue","23"],["dc.bibliographiccitation.journal","Stem Cells and Development"],["dc.bibliographiccitation.lastpage","2874"],["dc.bibliographiccitation.volume","23"],["dc.contributor.author","Luehrig, Sandra"],["dc.contributor.author","Siamishi, Iliana"],["dc.contributor.author","Tesmer-Wolf, Marieke"],["dc.contributor.author","Zechner, Ulrich"],["dc.contributor.author","Engel, Wolfgang"],["dc.contributor.author","Nolte, Jessica"],["dc.date.accessioned","2018-11-07T09:32:22Z"],["dc.date.available","2018-11-07T09:32:22Z"],["dc.date.issued","2014"],["dc.description.abstract","The gene Lrrc34 (leucine rich repeat containing 34) is highly expressed in pluripotent stem cells and its expression is strongly downregulated upon differentiation. These results let us to suggest a role for Lrrc34 in the regulation and maintenance of pluripotency. Expression analyses revealed that Lrrc34 is predominantly expressed in pluripotent stem cells and has an impact on the expression of known pluripotency genes, such as Oct4. Methylation studies of the Lrrc34 promoter showed a hypomethylation in undifferentiated stem cells and chromatin immunoprecipitation-quantitative polymerase chain reaction analyses of histone modifications revealed an enrichment of activating histone modifications on the Lrrc34 promoter region. Further, we could verify the nucleolus-the place of ribosome biogenesis-as the major subcellular localization of the LRRC34 protein. We have verified the interaction of LRRC34 with two major nucleolar proteins, Nucleophosmin and Nucleolin, by two independent methods, suggesting a role for Lrrc34 in ribosome biogenesis of pluripotent stem cells. In conclusion, LRRC34 is a novel nucleolar protein that is predominantly expressed in pluripotent stem cells. Its altered expression has an impact on pluripotency-regulating genes and it interacts with proteins known to be involved in ribosome biogenesis. Therefore we suggest a role for Lrrc34 in ribosome biogenesis of pluripotent stem cells."],["dc.description.sponsorship","German Research Foundation (DFG) [SPP1356, 941/1-2]; [ZE442/4-2]"],["dc.identifier.doi","10.1089/scd.2013.0470"],["dc.identifier.isi","000344914300006"],["dc.identifier.pmid","24991885"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31741"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Mary Ann Liebert, Inc"],["dc.relation.issn","1557-8534"],["dc.relation.issn","1547-3287"],["dc.title","Lrrc34, a Novel Nucleolar Protein, Interacts with Npm1 and Ncl and Has an Impact on Pluripotent Stem Cells"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Tissue Antigens"],["dc.bibliographiccitation.volume","84"],["dc.contributor.author","Monecke, Sebastian"],["dc.contributor.author","Hamann, Carina"],["dc.contributor.author","Elsner, Leslie"],["dc.contributor.author","Nolte, Jessica"],["dc.contributor.author","Engel, Wolfgang"],["dc.contributor.author","Hasenfuß, Gerd"],["dc.contributor.author","Guan, Kaomei"],["dc.contributor.author","Mansouri, Ahmed"],["dc.contributor.author","Dressel, Ralf"],["dc.date.accessioned","2018-11-07T09:38:32Z"],["dc.date.available","2018-11-07T09:38:32Z"],["dc.date.issued","2014"],["dc.format.extent","5"],["dc.identifier.isi","000337546000002"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/33083"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.publisher.place","Hoboken"],["dc.relation.eventlocation","Stockholm, SWEDEN"],["dc.relation.issn","1399-0039"],["dc.relation.issn","0001-2815"],["dc.title","PLURIPOTENT STEM CELLS VARYING IN A SINGLE MINOR HISTOCOMPATIBILITY ANTIGEN ELICIT CELLULAR AND HUMORAL IMMUNE RESPONSES THAT CAN MEDIATE GRAFT REJECTION"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1199"],["dc.bibliographiccitation.issue","7088"],["dc.bibliographiccitation.journal","Nature"],["dc.bibliographiccitation.lastpage","1203"],["dc.bibliographiccitation.volume","440"],["dc.contributor.author","Guan, Kaomei"],["dc.contributor.author","Nayernia, Karim"],["dc.contributor.author","Maier, Lars S."],["dc.contributor.author","Wagner, Stefan"],["dc.contributor.author","Dressel, Ralf"],["dc.contributor.author","Lee, Jae Ho"],["dc.contributor.author","Nolte, Jessica"],["dc.contributor.author","Wolf, F"],["dc.contributor.author","Li, M. Y."],["dc.contributor.author","Engel, Wolfgang"],["dc.contributor.author","Hasenfuß, Gerd"],["dc.date.accessioned","2017-09-07T11:53:07Z"],["dc.date.available","2017-09-07T11:53:07Z"],["dc.date.issued","2006"],["dc.description.abstract","Embryonic germ cells as well as germline stem cells from neonatal mouse testis are pluripotent and have differentiation potential similar to embryonic stem cells(1,2), suggesting that the germline lineage may retain the ability to generate pluripotent cells. However, until now there has been no evidence for the pluripotency and plasticity of adult spermatogonial stem cells (SSCs), which are responsible for maintaining spermatogenesis throughout life in the male(3). Here we show the isolation of SSCs from adult mouse testis using genetic selection, with a success rate of 27%. These isolated SSCs respond to culture conditions and acquire embryonic stem cell properties. We name these cells multipotent adult germline stem cells (maGSCs). They are able to spontaneously differentiate into derivatives of the three embryonic germ layers in vitro and generate teratomas in immunodeficient mice. When injected into an early blastocyst, SSCs contribute to the development of various organs and show germline transmission. Thus, the capacity to form multipotent cells persists in adult mouse testis. Establishment of human maGSCs from testicular biopsies may allow individual cell-based therapy without the ethical and immunological problems associated with human embryonic stem cells. Furthermore, these cells may provide new opportunities to study genetic diseases in various cell lineages."],["dc.identifier.doi","10.1038/nature04697"],["dc.identifier.gro","3143702"],["dc.identifier.isi","000237080000047"],["dc.identifier.pmid","16565704"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/1245"],["dc.notes.intern","WoS Import 2017-03-10"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.issn","0028-0836"],["dc.title","Pluripotency of spermatogonial stem cells from adult mouse testis"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","125"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Developmental Cell"],["dc.bibliographiccitation.lastpage","132"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Nayernia, Karim"],["dc.contributor.author","Nolte, Jessica"],["dc.contributor.author","Michelmann, Hans Wilhelm"],["dc.contributor.author","Lee, Jae Ho"],["dc.contributor.author","Rathsack, Kristina"],["dc.contributor.author","Drusenheimer, Nadja"],["dc.contributor.author","Dev, Arvind"],["dc.contributor.author","Wulf, Gerald"],["dc.contributor.author","Ehrmann, Ingrid E."],["dc.contributor.author","Elliott, David J."],["dc.contributor.author","Okpanyi, Vera"],["dc.contributor.author","Zechner, Ulrich"],["dc.contributor.author","Haaf, Thomas"],["dc.contributor.author","Meinhardt, Andreas"],["dc.contributor.author","Engel, Wolfgang"],["dc.date.accessioned","2018-11-07T09:35:07Z"],["dc.date.available","2018-11-07T09:35:07Z"],["dc.date.issued","2006"],["dc.description.abstract","Male gametes originate from a small population of spermatogonial stem cells (SSCs). These cells are believed to divide infinitely and to support spermatogenesis throughout life in the male. Here, we developed a strategy for the establishment of SSC lines from embryonic stem (ES) cells. These cells are able to undergo meiosis, are able to generate haploid male gametes in vitro, and are functional, as shown by fertilization after intracytoplasmic injection into mouse oocytes. Resulting two-cell embryos were transferred into oviducts, and live mice were born. Six of seven animals developed to adult mice. This is a clear indication that male gametes derived in vitro from ES cells by this strategy are able to induce normal fertilization and development. Our approach provides an accessible in vitro model system for studies of mammalian gametogenesis, as well as for the development of new strategies for the generation of transgenic mice and treatment of infertility."],["dc.identifier.doi","10.1016/j.devcel.2006.05.010"],["dc.identifier.isi","000239128300015"],["dc.identifier.pmid","16824959"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/32324"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Cell Press"],["dc.relation.issn","1534-5807"],["dc.title","In vitro-differentiated embryonic stem cells give rise to male gametes that can generate offspring mice"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e22413"],["dc.bibliographiccitation.issue","7"],["dc.bibliographiccitation.journal","PLoS ONE"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","Xu, X."],["dc.contributor.author","Pantakani, Dasaradha Venkata Krishna"],["dc.contributor.author","Luehrig, Sandra"],["dc.contributor.author","Tan, Xiaoying"],["dc.contributor.author","Khromov, Tatjana"],["dc.contributor.author","Nolte, Jessica"],["dc.contributor.author","Dressel, Ralf"],["dc.contributor.author","Zechner, Ulrich"],["dc.contributor.author","Engel, Wolfgang"],["dc.date.accessioned","2018-11-07T08:54:13Z"],["dc.date.available","2018-11-07T08:54:13Z"],["dc.date.issued","2011"],["dc.description.abstract","Embryonic stem cells (ESCs) generated from the in-vitro culture of blastocyst stage embryos are known as equivalent to blastocyst inner cell mass (ICM) in-vivo. Though several reports have shown the expression of germ cell/pre-meiotic (GC/PrM) markers in ESCs, their functional relevance for the pluripotency and germ line commitment are largely unknown. In the present study, we used mouse as a model system and systematically analyzed the RNA and protein expression of GC/PrM markers in ESCs and found them to be comparable to the expression of cultured pluripotent cells originated from the germ line. Further, siRNA knockdown experiments have demonstrated the parallel maintenance and independence of pluripotent and GC/PrM networks in ESCs. Through chromatin immunoprecipitation experiments, we observed that pluripotent cells exhibit active chromatin states at GC marker genes and a bivalent chromatin structure at PrM marker genes. Moreover, gene expression analysis during the time course of iPS cells generation revealed that the expression of GC markers precedes pluripotency markers. Collectively, through our observations we hypothesize that the chromatin state and the expression of GC/PrM markers might indicate molecular parallels between in-vivo germ cell specification and pluripotent stem cell generation."],["dc.identifier.doi","10.1371/journal.pone.0022413"],["dc.identifier.isi","000293172900028"],["dc.identifier.pmid","21799849"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8198"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/22620"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Public Library Science"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 2.5"],["dc.rights.uri","https://creativecommons.org/licenses/by/2.5"],["dc.title","Stage-Specific Germ-Cell Marker Genes Are Expressed in All Mouse Pluripotent Cell Types and Emerge Early during Induced Pluripotency"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","184"],["dc.bibliographiccitation.issue","4-5"],["dc.bibliographiccitation.journal","Differentiation"],["dc.bibliographiccitation.lastpage","194"],["dc.bibliographiccitation.volume","80"],["dc.contributor.author","Nolte, Jessica"],["dc.contributor.author","Michelmann, Hans Wilhelm"],["dc.contributor.author","Wolf, Marieke"],["dc.contributor.author","Wulf, Gerald"],["dc.contributor.author","Nayernia, Karim"],["dc.contributor.author","Meinhardt, Andreas"],["dc.contributor.author","Zechner, Ulrich"],["dc.contributor.author","Engel, Wolfgang"],["dc.date.accessioned","2018-11-07T08:37:27Z"],["dc.date.available","2018-11-07T08:37:27Z"],["dc.date.issued","2010"],["dc.description.abstract","Spermatogonial stem cells (SSCs) provide the basis for spermatogenesis throughout adult life by undergoing self-renewal and differentiation into sperm. SSC-derived cell lines called multipotent adult germline stem cells (maGSCs) were recently shown to be pluripotent and to have the same potential as embryonic stem cells (ESCs). In a differentiation protocol using retinoic acid(RA) and based on a double selection strategy, we have shown that ESCs are able to undergo meiosis and produce haploid male germ cells in vitro. Using this differentiation protocol we have now succeeded to generate haploid male germ cells from maGSCs in vitro. maGSCs derived from a Stra8-EGFP transgenic mouse line were differentiated into stable spermatogonial stages and further cultured. These cells were transfected with a post meiotic specific promoter construct Prm1-DsRed to monitor retinoic acid(RA) induced differentiation into haploid male gametes. Our protocol is another approach for the production of pluripotent stem cell derived gametes (PSCDGs) and is an alternative for the investigation of mammalian spermatogenesis, germ line gene modification and epigenetic reprogramming. If reproducible with pluripotent cell lines derived from human SSCs, it could also be used as a therapeutic approach for the treatment of male infertility. (C) 2010 International Society of Differentiation. Published by Elsevier Ltd. All rights reserved."],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft [SPP 1356, FOR 1041]"],["dc.identifier.doi","10.1016/j.diff.2010.08.001"],["dc.identifier.isi","000283655200002"],["dc.identifier.pmid","20810205"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/18533"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Sci Ltd"],["dc.relation.issn","0301-4681"],["dc.title","PSCDGs of mouse multipotent adult germline stem cells can enter and progress through meiosis to form haploid male germ cells in vitro"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","9"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","World Journal of Stem Cells"],["dc.bibliographiccitation.lastpage","25"],["dc.bibliographiccitation.volume","5"],["dc.contributor.author","Dihazi, Gry H."],["dc.contributor.author","Bibi, Asima"],["dc.contributor.author","Jahn, Olaf"],["dc.contributor.author","Nolte, Jessica"],["dc.contributor.author","Mueller, Gerhard A."],["dc.contributor.author","Engel, Wolfgang"],["dc.contributor.author","Dihazi, Hassan"],["dc.date.accessioned","2019-07-09T11:40:20Z"],["dc.date.available","2019-07-09T11:40:20Z"],["dc.date.issued","2013-01-26"],["dc.description.abstract","AIM: To investigate the proteome changes of stem cells due to ciclopirox olamine (CPX) treatment compared to control and retinoic acid treated cells. METHODS: Stem cells (SCs) are cells, which have the ability to continuously divide and differentiate into various other kinds of cells. Murine embryonic stem cells (ESCs) and multipotent adult germline stem cells (maGSCs) were treated with CPX, which has been shown to have an antiproliferative effect on stem cells, and compared to stem cells treated with retinoic acid (RA), which is known to have a differentiating effect on stem cells. Classical proteomic techniques like 2-D gel electrophoresis and differential in-gel electrophoresis (DIGE) were used to generate 2D protein maps from stem cells treated with RA or CPX as well as from non-treated stem cells. The resulting 2D gels were scanned and the digitalized images were collated with the help of Delta 2D software. The differentially expressed proteins were analyzed by a MALDI-TOF-TOF mass spectrometer, and the identified proteins were investigated and categorized using bioinformatics. RESULTS: Treatment of stem cells with CPX, a synthetic antifungal clinically used to treat superficial mycoses, resulted in an antiproliferative effect in vitro, without impairment of pluripotency. To understand the mechanisms induced by CPX treatments which results in arrest of cell cycle without any marked effect on pluripotency, a comparative proteomics study was conducted. The obtained data revealed that the CPX impact on cell proliferation was accompanied with a significant alteration in stem cell proteome. By peptide mass fingerprinting and tandem mass spectrometry combined with searches of protein sequence databases, a set of 316 proteins was identified, corresponding to a library of 125 non-redundant proteins. With proteomic analysis of ESCs and maGSCs treated with CPX and RA, we could identify more than 90 single proteins, which were differently expressed in both cell lines. We could highlight, that CPX treatment of stem cells, with subsequent proliferation inhibition, resulted in an alteration of the expression of 56 proteins compared to non-treated cells, and 54 proteins compared to RA treated cells. Bioinformatics analysis of the regulated proteins demonstrated their involvement in various biological processes. To our interest, a number of proteins have potential roles in the regulation of cell proliferation either directly or indirectly. Furthermore the classification of the altered polypeptides according to their main known/postulated functions revealed that the majority of these proteins are involved in molecular functions like nucleotide binding and metal ion binding, and biological processes like nucleotide biosynthetic processes, gene expression, embryonic development, regulation of transcription, cell cycle processes, RNA and mRNA processing. Proteins, which are involved in nucleotide biosynthetic process and proteolysis, were downregulated in CPX treated cells compared to control, as well as in RA treated cells, which may explain the cell cycle arrest. Moreover, proteins which were involved in cell death, positive regulation of biosynthetic process, response to organic substance, glycolysis, anti-apoptosis, and phosphorylation were downregulated in RA treated cells compared to control and CPX treated cells. CONCLUSION: The CPX treatment of SCs results in downregulation of nucleotide binding proteins and leads to cell cycle stop without impairment of pluripotency."],["dc.identifier.doi","10.4252/wjsc.v5.i1.9"],["dc.identifier.fs","603239"],["dc.identifier.pmid","23362436"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10937"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/58149"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1948-0210"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Impact of the antiproliferative agent ciclopirox olamine treatment on stem cells proteome."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1045"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Stem Cell Research"],["dc.bibliographiccitation.lastpage","1059"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Tan, Xiaoying"],["dc.contributor.author","Xu, X."],["dc.contributor.author","Elkenani, Manar"],["dc.contributor.author","Smorag, Lukasz"],["dc.contributor.author","Zechner, Ulrich"],["dc.contributor.author","Nolte, Jessica"],["dc.contributor.author","Engel, Wolfgang"],["dc.contributor.author","Pantakani, Dasaradha Venkata Krishna"],["dc.date.accessioned","2018-11-07T09:17:54Z"],["dc.date.available","2018-11-07T09:17:54Z"],["dc.date.issued","2013"],["dc.description.abstract","Pluripotency is maintained by both known and unknown transcriptional regulatory networks. In the present study, we have identified Zfp819, a KRAB-zinc finger protein, as a novel pluripotency-related factor and characterized its role in pluripotent stem cells. We show that Zfp819 is expressed highly in various types of pluripotent stem cells but not in their differentiated counterparts. We identified the presence of non-canonical nuclear localization signals in particular zinc finger motifs and identified them as responsible for the nuclear localization of Zfp819. Analysis of the Zfp819 promoter region revealed the presence of a transcriptionally active chromatin signature. Moreover, we confirmed the binding of pluripotency-related factors, Oct4, Sox2, and Nanog to the distal promoter region of Zfp819, indicating that the expression of this gene is regulated by a pluripotency transcription factor network. We found that the expression of endogenous retroviral elements (ERVs) such as Intracisternal A Particle (IAP) retrotransposons, Long Interspersed Nuclear Elements (LINE1), and Short Interspersed Nuclear Elements (SINE B1) is significantly upregulated in Zfp819-knockdown (Zfp819_KD) cells. In line with the activation of ERVs, we observed the occurrence of spontaneous DNA damage in Zfp819_KD cells. Furthermore, we tested whether Zfp819 can interact with KAP1, a KRAB-associated protein with a transcriptional repression function, and found the interaction between these two proteins in both in vitro and in vivo experiments. The challenging of Zfp819_KD cells with DNA damaging agent revealed that these cells are inefficient in repairing the damaged DNA, as cells showed presence of gamma H2A.X foci for a prolonged time. Collectively, our study identified Zfp819 as a novel pluripotency-related factor and unveiled its function in genomic integrity maintenance mechanisms of mouse embryonic stem cells. (C) 2013 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.scr.2013.07.006"],["dc.identifier.isi","327905300008"],["dc.identifier.pmid","23954693"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/28283"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","1876-7753"],["dc.relation.issn","1873-5061"],["dc.title","Zfp819, a novel KRAB-zinc finger protein, interacts with KAP1 and functions in genomic integrity maintenance of mouse embryonic stem cells"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","166"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","MHR Basic science of reproductive medicine"],["dc.bibliographiccitation.lastpage","174"],["dc.bibliographiccitation.volume","17"],["dc.contributor.author","Khromov, Tatjana"],["dc.contributor.author","Pantakani, Dasaradha Venkata Krishna"],["dc.contributor.author","Nolte, Jessica"],["dc.contributor.author","Wolf, Marieke"],["dc.contributor.author","Dressel, Ralf"],["dc.contributor.author","Engel, Wolfgang"],["dc.contributor.author","Zechner, Ulrich"],["dc.date.accessioned","2018-11-07T08:58:57Z"],["dc.date.available","2018-11-07T08:58:57Z"],["dc.date.issued","2011"],["dc.description.abstract","We previously reported the generation of multipotent adult germline stem cells (maGSCs) from spermatogonial stem cells (SSCs) isolated from adult mouse testis. In a later study, we substantiated the pluripotency of maGSCs by demonstrating their close similarity to pluripotent male embryonic stem cells (ESCs) at the epigenetic level of global and gene-specific DNA methylation. Here, we extended the comparative epigenetic analysis of maGSCs and male ESCs by investigating the second main epigenetic modification in mammals, i.e. global and gene-specific modifications of histones (H3K4 trimethylation, H3K9 acetylation, H3K9 trimethylation and H3K27 trimethylation). Using immunofluorescence staining, flow cytometry and western blot analysis, we show that maGSCs are very similar to male ESCs with regard to global levels and nuclear distribution patterns of these modifications. Chromatin immunoprecipitation real-time PCR analysis of these modifications at the gene-specific level further revealed modification patterns of the pluripotency marker genes Oct4, Sox2 and Nanog in maGSCs that are nearly identical to those of male ESCs. These genes were enriched for activating histone modifications including H3K4me3 and H3K9ac and depleted of repressive histone modifications including H3K27me3 and H3K9me3. In addition, Hoxa11, a key regulator of early embryonic development showed the ESC-typical bivalent chromatin conformation with enrichment of both the activating H3K4me3 and the repressive H3K27me3 modification also in maGSCs. Collectively, our results demonstrate that maGSCs also closely resemble ESCs with regard to their chromatin state and further evidence their pluripotent nature."],["dc.identifier.doi","10.1093/molehr/gaq085"],["dc.identifier.isi","000287257000003"],["dc.identifier.pmid","20935159"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/23771"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Oxford Univ Press"],["dc.relation.issn","1360-9947"],["dc.title","Global and gene-specific histone modification profiles of mouse multipotent adult germline stem cells"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]