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  1. Article ; Online: Too much to handle - how gaining chromosomes destabilizes the genome.

    Passerini, Verena / Storchová, Zuzana

    Cell cycle (Georgetown, Tex.)

    2016  Volume 15, Issue 21, Page(s) 2867–2874

    Abstract: Most eukaryotic organisms are diploid, with 2 chromosome sets in their nuclei. Whole chromosomal aneuploidy, a deviation from multiples of the haploid chromosome number, arises from chromosome segregation errors and often has detrimental consequences for ...

    Abstract Most eukaryotic organisms are diploid, with 2 chromosome sets in their nuclei. Whole chromosomal aneuploidy, a deviation from multiples of the haploid chromosome number, arises from chromosome segregation errors and often has detrimental consequences for cells. In humans, numerical aneuploidy severely impairs embryonic development and the rare survivors develop disorders characterized by multiple pathologies. Moreover, as many as 75 % of malignant tumors display aneuploidy. Although the exact contribution of aneuploidy to tumorigenesis remains unclear, previous studies have suggested that aneuploidy may affect the maintenance of genome integrity. We found that human cells with extra chromosomes showed phenotypes suggestive of replication defects, a phenomenon which we went on to characterize as being due to the aneuploidy-driven downregulation of replication factors, in particular of the replicative helicase MCM2-7. Thus, missegregation of even a single chromosome can further promote genomic instability and thereby contribute to tumor development. In this review we will examine the possible causes of downregulation of replicative factors and discuss the consequences of genomic instability in aneuploid cells.
    MeSH term(s) Aneuploidy ; Chromosome Aberrations ; DNA Replication ; Genomic Instability ; Humans ; Models, Biological ; Neoplasms/genetics
    Language English
    Publishing date 2016-09-16
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2146183-1
    ISSN 1551-4005 ; 1538-4101 ; 1554-8627
    ISSN (online) 1551-4005
    ISSN 1538-4101 ; 1554-8627
    DOI 10.1080/15384101.2016.1231285
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Loss of CREBBP and KMT2D cooperate to accelerate lymphomagenesis and shape the lymphoma immune microenvironment.

    Li, Jie / Chin, Christopher R / Ying, Hsia-Yuan / Meydan, Cem / Teater, Matthew R / Xia, Min / Farinha, Pedro / Takata, Katsuyoshi / Chu, Chi-Shuen / Jiang, Yiyue / Eagles, Jenna / Passerini, Verena / Tang, Zhanyun / Rivas, Martin A / Weigert, Oliver / Pugh, Trevor J / Chadburn, Amy / Steidl, Christian / Scott, David W /
    Roeder, Robert G / Mason, Christopher E / Zappasodi, Roberta / Béguelin, Wendy / Melnick, Ari M

    Nature communications

    2024  Volume 15, Issue 1, Page(s) 2879

    Abstract: Despite regulating overlapping gene enhancers and pathways, CREBBP and KMT2D mutations recurrently co-occur in germinal center (GC) B cell-derived lymphomas, suggesting potential oncogenic cooperation. Herein, we report that combined haploinsufficiency ... ...

    Abstract Despite regulating overlapping gene enhancers and pathways, CREBBP and KMT2D mutations recurrently co-occur in germinal center (GC) B cell-derived lymphomas, suggesting potential oncogenic cooperation. Herein, we report that combined haploinsufficiency of Crebbp and Kmt2d induces a more severe mouse lymphoma phenotype (vs either allele alone) and unexpectedly confers an immune evasive microenvironment manifesting as CD8
    MeSH term(s) Animals ; Mice ; B-Lymphocytes/metabolism ; Chromatin/genetics ; Chromatin/metabolism ; Germinal Center/metabolism ; Lymphoma, Large B-Cell, Diffuse/genetics ; Mutation ; Tumor Microenvironment/genetics
    Chemical Substances Chromatin ; Kmt2d protein, mouse (EC 2.1.1.43) ; Crebbp protein, mouse (EC 2.3.1.48)
    Language English
    Publishing date 2024-04-03
    Publishing country England
    Document type Journal Article
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-024-47012-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Multimodal and spatially resolved profiling identifies distinct patterns of T cell infiltration in nodal B cell lymphoma entities.

    Roider, Tobias / Baertsch, Marc A / Fitzgerald, Donnacha / Vöhringer, Harald / Brinkmann, Berit J / Czernilofsky, Felix / Knoll, Mareike / Llaó-Cid, Laura / Mathioudaki, Anna / Faßbender, Bianca / Herbon, Maxime / Lautwein, Tobias / Bruch, Peter-Martin / Liebers, Nora / Schürch, Christian M / Passerini, Verena / Seifert, Marc / Brobeil, Alexander / Mechtersheimer, Gunhild /
    Müller-Tidow, Carsten / Weigert, Oliver / Seiffert, Martina / Nolan, Garry P / Huber, Wolfgang / Dietrich, Sascha

    Nature cell biology

    2024  Volume 26, Issue 3, Page(s) 478–489

    Abstract: The redirection of T cells has emerged as an attractive therapeutic principle in B cell non-Hodgkin lymphoma (B-NHL). However, a detailed characterization of lymphoma-infiltrating T cells across B-NHL entities is missing. Here we present an in-depth T ... ...

    Abstract The redirection of T cells has emerged as an attractive therapeutic principle in B cell non-Hodgkin lymphoma (B-NHL). However, a detailed characterization of lymphoma-infiltrating T cells across B-NHL entities is missing. Here we present an in-depth T cell reference map of nodal B-NHL, based on cellular indexing of transcriptomes and epitopes, T cell receptor sequencing, flow cytometry and multiplexed immunofluorescence applied to 101 lymph nodes from patients with diffuse large B cell, mantle cell, follicular or marginal zone lymphoma, and from healthy controls. This multimodal resource revealed quantitative and spatial aberrations of the T cell microenvironment across and within B-NHL entities. Quantitative differences in PD1
    MeSH term(s) Humans ; T-Lymphocytes/pathology ; B-Lymphocytes/pathology ; Lymphoma, B-Cell, Marginal Zone/pathology ; Transforming Growth Factor beta ; Tumor Microenvironment
    Chemical Substances Transforming Growth Factor beta
    Language English
    Publishing date 2024-02-20
    Publishing country England
    Document type Journal Article
    ZDB-ID 1474722-4
    ISSN 1476-4679 ; 1465-7392
    ISSN (online) 1476-4679
    ISSN 1465-7392
    DOI 10.1038/s41556-024-01358-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Book ; Online ; Thesis: Aneuploidy triggers a conserved global response and impairs cellular homeostasis

    Passerini, Verena [Verfasser] / Jentsch, Stefan [Akademischer Betreuer]

    2016  

    Author's details Verena Passerini ; Betreuer: Stefan Jentsch
    Keywords Biowissenschaften, Biologie ; Life Science, Biology
    Subject code sg570
    Language English
    Publisher Universitätsbibliothek der Ludwig-Maximilians-Universität
    Publishing place München
    Document type Book ; Online ; Thesis
    Database Digital theses on the web

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  5. Article ; Online: Novel insights into the pathogenesis of follicular lymphoma by molecular profiling of localized and systemic disease forms.

    Kalmbach, Sabrina / Grau, Michael / Zapukhlyak, Myroslav / Leich, Ellen / Jurinovic, Vindi / Hoster, Eva / Staiger, Annette M / Kurz, Katrin S / Weigert, Oliver / Gaitzsch, Erik / Passerini, Verena / Engelhard, Marianne / Herfarth, Klaus / Beiske, Klaus / Micci, Francesca / Möller, Peter / Bernd, Heinz-Wolfram / Feller, Alfred C / Klapper, Wolfram /
    Stein, Harald / Hansmann, Martin-Leo / Hartmann, Sylvia / Dreyling, Martin / Holte, Harald / Lenz, Georg / Rosenwald, Andreas / Ott, German / Horn, Heike

    Leukemia

    2023  Volume 37, Issue 10, Page(s) 2058–2065

    Abstract: Knowledge on the pathogenesis of FL is mainly based on data derived from advanced/systemic stages of FL (sFL) and only small cohorts of localized FL (lFL) have been characterized intensively so far. Comprehensive analysis with profiling of somatic copy ... ...

    Abstract Knowledge on the pathogenesis of FL is mainly based on data derived from advanced/systemic stages of FL (sFL) and only small cohorts of localized FL (lFL) have been characterized intensively so far. Comprehensive analysis with profiling of somatic copy number alterations (SCNA) and whole exome sequencing (WES) was performed in 147 lFL and 122 sFL. Putative targets were analyzed for gene and protein expression. Overall, lFL and sFL, as well as BCL2 translocation-positive (BCL2+) and -negative (BCL2-) FL showed overlapping features in SCNA and mutational profiles. Significant differences between lFL and sFL, however, were detected for SCNA frequencies, e.g., in 18q-gains (14% lFL vs. 36% sFL; p = 0.0003). Although rare in lFL, gains in 18q21 were associated with inferior progression-free survival (PFS). The mutational landscape of lFL and sFL included typical genetic lesions. However, ARID1A mutations were significantly more often detected in sFL (29%) compared to lFL (6%, p = 0.0001). In BCL2 + FL mutations in KMT2D, BCL2, ABL2, IGLL5 and ARID1A were enriched, while STAT6 mutations more frequently occurred in BCL2- FL. Although the landscape of lFL and sFL showed overlapping features, molecular profiling revealed novel insights and identified gains in 18q21 as prognostic marker in lFL.
    MeSH term(s) Humans ; Lymphoma, Follicular/genetics ; Lymphoma, Follicular/metabolism ; Translocation, Genetic ; Proto-Oncogene Proteins c-bcl-2/genetics ; Proto-Oncogene Proteins c-bcl-2/metabolism ; Mutation ; In Situ Hybridization, Fluorescence
    Chemical Substances Proto-Oncogene Proteins c-bcl-2
    Language English
    Publishing date 2023-08-10
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 807030-1
    ISSN 1476-5551 ; 0887-6924
    ISSN (online) 1476-5551
    ISSN 0887-6924
    DOI 10.1038/s41375-023-01995-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: HSF1 deficiency and impaired HSP90-dependent protein folding are hallmarks of aneuploid human cells.

    Donnelly, Neysan / Passerini, Verena / Dürrbaum, Milena / Stingele, Silvia / Storchová, Zuzana

    The EMBO journal

    2014  Volume 33, Issue 20, Page(s) 2374–2387

    Abstract: Aneuploidy is a hallmark of cancer and is associated with malignancy and poor prognosis. Recent studies have revealed that aneuploidy inhibits proliferation, causes distinct alterations in the transcriptome and proteome and disturbs cellular proteostasis. ...

    Abstract Aneuploidy is a hallmark of cancer and is associated with malignancy and poor prognosis. Recent studies have revealed that aneuploidy inhibits proliferation, causes distinct alterations in the transcriptome and proteome and disturbs cellular proteostasis. However, the molecular mechanisms underlying the changes in gene expression and the impairment of proteostasis are not understood. Here, we report that human aneuploid cells are impaired in HSP90-mediated protein folding. We show that aneuploidy impairs induction of the heat shock response suggesting that the activity of the transcription factor heat shock factor 1 (HSF1) is compromised. Indeed, increased levels of HSF1 counteract the effects of aneuploidy on HSP90 expression and protein folding, identifying HSF1 overexpression as the first aneuploidy-tolerating mutation in human cells. Thus, impaired HSF1 activity emerges as a critical factor underlying the phenotypes linked to aneuploidy. Finally, we demonstrate that deficient protein folding capacity directly shapes gene expression in aneuploid cells. Our study provides mechanistic insight into the causes of the disturbed proteostasis in aneuploids and deepens our understanding of the role of HSF1 in cytoprotection and carcinogenesis.
    MeSH term(s) Aneuploidy ; Cell Line ; Cell Survival ; DNA-Binding Proteins/genetics ; DNA-Binding Proteins/metabolism ; Gene Expression ; Gene Expression Regulation ; HSP90 Heat-Shock Proteins/genetics ; HSP90 Heat-Shock Proteins/metabolism ; Heat Shock Transcription Factors ; Heat-Shock Response/genetics ; Humans ; Mutation ; Phenotype ; Promoter Regions, Genetic/genetics ; Proteasome Endopeptidase Complex ; Protein Folding ; Proteome ; Proteostasis Deficiencies ; Transcription Factors/genetics ; Transcription Factors/metabolism ; Transcriptome
    Chemical Substances DNA-Binding Proteins ; HSF1 protein, human ; HSP90 Heat-Shock Proteins ; Heat Shock Transcription Factors ; Proteome ; Transcription Factors ; Proteasome Endopeptidase Complex (EC 3.4.25.1)
    Language English
    Publishing date 2014-09-09
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 586044-1
    ISSN 1460-2075 ; 0261-4189
    ISSN (online) 1460-2075
    ISSN 0261-4189
    DOI 10.15252/embj.201488648
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: PARP14 is a novel target in STAT6 mutant follicular lymphoma.

    Mentz, Michael / Keay, William / Strobl, Carolin Dorothea / Antoniolli, Martina / Adolph, Louisa / Heide, Michael / Lechner, Axel / Haebe, Sarah / Osterode, Elisa / Kridel, Robert / Ziegenhain, Christoph / Wange, Lucas Esteban / Hildebrand, Johannes Adrian / Shree, Tanaya / Silkenstedt, Elisabeth / Staiger, Annette M / Ott, German / Horn, Heike / Szczepanowski, Monika /
    Richter, Julia / Levy, Ronald / Rosenwald, Andreas / Enard, Wolfgang / Zimber-Strobl, Ursula / von Bergwelt-Baildon, Michael / Hiddemann, Wolfgang / Klapper, Wolfram / Schmidt-Supprian, Marc / Rudelius, Martina / Bararia, Deepak / Passerini, Verena / Weigert, Oliver

    Leukemia

    2022  Volume 36, Issue 9, Page(s) 2281–2292

    Abstract: The variable clinical course of follicular lymphoma (FL) is determined by the molecular heterogeneity of tumor cells and complex interactions within the tumor microenvironment (TME). IL-4 producing follicular helper T cells ( ... ...

    Abstract The variable clinical course of follicular lymphoma (FL) is determined by the molecular heterogeneity of tumor cells and complex interactions within the tumor microenvironment (TME). IL-4 producing follicular helper T cells (T
    MeSH term(s) Humans ; Immunohistochemistry ; Interleukin-4 ; Lymphoma, B-Cell ; Lymphoma, Follicular ; Poly(ADP-ribose) Polymerases ; STAT6 Transcription Factor ; Transcriptional Activation ; Tumor Microenvironment
    Chemical Substances STAT6 Transcription Factor ; STAT6 protein, human ; Interleukin-4 (207137-56-2) ; PARP14 protein, human (EC 2.4.2.30) ; Poly(ADP-ribose) Polymerases (EC 2.4.2.30)
    Language English
    Publishing date 2022-07-18
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 807030-1
    ISSN 1476-5551 ; 0887-6924
    ISSN (online) 1476-5551
    ISSN 0887-6924
    DOI 10.1038/s41375-022-01641-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Unique features of the transcriptional response to model aneuploidy in human cells.

    Dürrbaum, Milena / Kuznetsova, Anastasia Yurievna / Passerini, Verena / Stingele, Silvia / Stoehr, Gabriele / Storchová, Zuzana

    BMC genomics

    2014  Volume 15, Page(s) 139

    Abstract: Background: Aneuploidy, a karyotype deviating from multiples of a haploid chromosome set, affects the physiology of eukaryotes. In humans, aneuploidy is linked to pathological defects such as developmental abnormalities, mental retardation or cancer, ... ...

    Abstract Background: Aneuploidy, a karyotype deviating from multiples of a haploid chromosome set, affects the physiology of eukaryotes. In humans, aneuploidy is linked to pathological defects such as developmental abnormalities, mental retardation or cancer, but the underlying mechanisms remain elusive. There are many different types and origins of aneuploidy, but whether there is a uniform cellular response to aneuploidy in human cells has not been addressed so far.
    Results: Here we evaluate the transcription profiles of eleven trisomic and tetrasomic cell lines and two cell lines with complex aneuploid karyotypes. We identify a characteristic aneuploidy response pattern defined by upregulation of genes linked to endoplasmic reticulum, Golgi apparatus and lysosomes, and downregulation of DNA replication, transcription as well as ribosomes. Strikingly, complex aneuploidy elicits the same transcriptional changes as trisomy. To uncover the triggers of the response, we compared the profiles with transcription changes in human cells subjected to stress conditions. Interestingly, we found an overlap only with the response to treatment with the autophagy inhibitor bafilomycin A1. Finally, we identified 23 genes whose expression is significantly altered in all aneuploids and which may thus serve as aneuploidy markers.
    Conclusions: Our analysis shows that despite the variability in chromosome content, aneuploidy triggers uniform transcriptional response in human cells. A common response independent of the type of aneuploidy might be exploited as a novel target for cancer therapy. Moreover, the potential aneuploidy markers identified in our analysis might represent novel biomarkers to assess the malignant potential of a tumor.
    MeSH term(s) Aneuploidy ; Genetic Markers ; HCT116 Cells ; Humans ; Karyotype ; Models, Genetic ; RNA, Messenger/metabolism ; Tetrasomy ; Trisomy
    Chemical Substances Genetic Markers ; RNA, Messenger
    Language English
    Publishing date 2014-02-18
    Publishing country England
    Document type Journal Article
    ISSN 1471-2164
    ISSN (online) 1471-2164
    DOI 10.1186/1471-2164-15-139
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: The presence of extra chromosomes leads to genomic instability

    Verena Passerini / Efrat Ozeri-Galai / Mirjam S. de Pagter / Neysan Donnelly / Sarah Schmalbrock / Wigard P. Kloosterman / Batsheva Kerem / Zuzana Storchová

    Nature Communications, Vol 7, Iss 1, Pp 1-

    2016  Volume 12

    Abstract: One of the hallmarks of cancer cells is aneuploidy, however the molecular effects are poorly understood. Here the authors show that trisomic and tetrasomic cells display increased genomic instability and reduced levels of the helicase MCM2-7. ...

    Abstract One of the hallmarks of cancer cells is aneuploidy, however the molecular effects are poorly understood. Here the authors show that trisomic and tetrasomic cells display increased genomic instability and reduced levels of the helicase MCM2-7.
    Keywords Science ; Q
    Language English
    Publishing date 2016-02-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article ; Online: The presence of extra chromosomes leads to genomic instability.

    Passerini, Verena / Ozeri-Galai, Efrat / de Pagter, Mirjam S / Donnelly, Neysan / Schmalbrock, Sarah / Kloosterman, Wigard P / Kerem, Batsheva / Storchová, Zuzana

    Nature communications

    2016  Volume 7, Page(s) 10754

    Abstract: Aneuploidy is a hallmark of cancer and underlies genetic disorders characterized by severe developmental defects, yet the molecular mechanisms explaining its effects on cellular physiology remain elusive. Here we show, using a series of human cells with ... ...

    Abstract Aneuploidy is a hallmark of cancer and underlies genetic disorders characterized by severe developmental defects, yet the molecular mechanisms explaining its effects on cellular physiology remain elusive. Here we show, using a series of human cells with defined aneuploid karyotypes, that gain of a single chromosome increases genomic instability. Next-generation sequencing and SNP-array analysis reveal accumulation of chromosomal rearrangements in aneuploids, with break point junction patterns suggestive of replication defects. Trisomic and tetrasomic cells also show increased DNA damage and sensitivity to replication stress. Strikingly, we find that aneuploidy-induced genomic instability can be explained by the reduced expression of the replicative helicase MCM2-7. Accordingly, restoring near-wild-type levels of chromatin-bound MCM helicase partly rescues the genomic instability phenotypes. Thus, gain of chromosomes triggers replication stress, thereby promoting genomic instability and possibly contributing to tumorigenesis.
    MeSH term(s) Aneuploidy ; Cell Cycle/genetics ; Cell Line ; Chromosomes, Human, Pair 21/genetics ; Chromosomes, Human, Pair 3/genetics ; Chromosomes, Human, Pair 5/genetics ; Chromosomes, Human, Pair 8/genetics ; Comparative Genomic Hybridization ; DNA/biosynthesis ; Fluorescent Antibody Technique ; Genomic Instability/genetics ; HCT116 Cells ; High-Throughput Nucleotide Sequencing ; Humans ; Metaphase/genetics ; Microscopy, Confocal ; Minichromosome Maintenance Proteins/metabolism ; Neoplasms/genetics ; Oligonucleotide Array Sequence Analysis ; Polymorphism, Single Nucleotide ; Sequence Analysis, DNA ; Tetrasomy/genetics ; Trisomy/genetics
    Chemical Substances DNA (9007-49-2) ; Minichromosome Maintenance Proteins (EC 3.6.4.12)
    Language English
    Publishing date 2016-02-15
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 2041-1723
    ISSN (online) 2041-1723
    DOI 10.1038/ncomms10754
    Database MEDical Literature Analysis and Retrieval System OnLINE

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