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Krüger J, Fischer A, Breunig M, Allgöwer C, Schulte L, Merkle J, Mulaw MA, Okeke N, Melzer MK, Morgenstern C, Azoitei N, Seufferlein T, Barth TF, Siebert R, Hohwieler M, Kleger A. DNA methylation-associated allelic inactivation regulates Keratin 19 gene expression during pancreatic development and carcinogenesis. J Pathol 2023; 261:139-155. [PMID: 37555362 DOI: 10.1002/path.6156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 04/29/2023] [Accepted: 06/09/2023] [Indexed: 08/10/2023]
Abstract
Within the pancreas, Keratin 19 (KRT19) labels the ductal lineage and is a determinant of pancreatic ductal adenocarcinoma (PDAC). To investigate KRT19 expression dynamics, we developed a human pluripotent stem cell (PSC)-based KRT19-mCherry reporter system in different genetic backgrounds to monitor KRT19 expression from its endogenous gene locus. A differentiation protocol to generate mature pancreatic duct-like organoids was applied. While KRT19/mCherry expression became evident at the early endoderm stage, mCherry signal was present in nearly all cells at the pancreatic endoderm (PE) and pancreatic progenitor (PP) stages. Interestingly, despite homogenous KRT19 expression, mCherry positivity dropped to 50% after ductal maturation, indicating a permanent switch from biallelic to monoallelic expression. DNA methylation profiling separated the distinct differentiation intermediates, with site-specific DNA methylation patterns occurring at the KRT19 locus during ductal maturation. Accordingly, the monoallelic switch was partially reverted upon treatment with a DNA-methyltransferase inhibitor. In human PDAC cohorts, high KRT19 levels correlate with low locus methylation and decreased survival. At the same time, activation of oncogenic KRASG12D signalling in our reporter system reversed monoallelic back to biallelic KRT19 expression in pancreatic duct-like organoids. Allelic reactivation was also detected in single-cell transcriptomes of human PDACs, which further revealed a positive correlation between KRT19 and KRAS expression. Accordingly, KRAS mutant PDACs had higher KRT19 mRNA but lower KRT19 gene locus DNA methylation than wildtype counterparts. KRT19 protein was additionally detected in plasma of PDAC patients, with higher concentrations correlating with shorter progression-free survival in gemcitabine/nabPaclitaxel-treated and opposing trends in FOLFIRINOX-treated patients. Apart from being an important pancreatic ductal lineage marker, KRT19 appears tightly controlled via a switch from biallelic to monoallelic expression during ductal lineage entry and is aberrantly expressed after oncogenic KRASG12D expression, indicating a role in PDAC development and malignancy. Soluble KRT19 might serve as a relevant biomarker to stratify treatment. © 2023 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Jana Krüger
- Institute of Molecular Oncology and Stem Cell Biology, Ulm University Hospital, Ulm, Germany
| | - Anja Fischer
- Institute of Human Genetics, Ulm University & Ulm University Hospital, Ulm, Germany
| | - Markus Breunig
- Institute of Molecular Oncology and Stem Cell Biology, Ulm University Hospital, Ulm, Germany
| | - Chantal Allgöwer
- Institute of Molecular Oncology and Stem Cell Biology, Ulm University Hospital, Ulm, Germany
| | - Lucas Schulte
- Division of Interdisciplinary Pancreatology, Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
| | | | - Medhanie A Mulaw
- Unit for Single-cell Genomics, Medical Faculty, Ulm University, Ulm, Germany
| | - Nnamdi Okeke
- Institute of Human Genetics, Ulm University & Ulm University Hospital, Ulm, Germany
| | - Michael K Melzer
- Institute of Molecular Oncology and Stem Cell Biology, Ulm University Hospital, Ulm, Germany
- Department of Urology, Ulm University Hospital, Ulm, Germany
| | - Clara Morgenstern
- Institute of Molecular Oncology and Stem Cell Biology, Ulm University Hospital, Ulm, Germany
| | - Ninel Azoitei
- Institute of Molecular Oncology and Stem Cell Biology, Ulm University Hospital, Ulm, Germany
| | - Thomas Seufferlein
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
| | - Thomas Fe Barth
- Department of Pathology, Ulm University Hospital, Ulm, Germany
| | - Reiner Siebert
- Institute of Human Genetics, Ulm University & Ulm University Hospital, Ulm, Germany
| | - Meike Hohwieler
- Institute of Molecular Oncology and Stem Cell Biology, Ulm University Hospital, Ulm, Germany
| | - Alexander Kleger
- Institute of Molecular Oncology and Stem Cell Biology, Ulm University Hospital, Ulm, Germany
- Division of Interdisciplinary Pancreatology, Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
- Organoid Core Facility, Ulm University, Ulm, Germany
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2
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Pan L, Mulaw MA, Gout J, Guo M, Zarrin H, Schwarz P, Baumann B, Seufferlein T, Wagner M, Oswald F. RBPJ Deficiency Sensitizes Pancreatic Acinar Cells to KRAS-Mediated Pancreatic Intraepithelial Neoplasia Initiation. Cell Mol Gastroenterol Hepatol 2023; 16:783-807. [PMID: 37543088 PMCID: PMC10520364 DOI: 10.1016/j.jcmgh.2023.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 07/28/2023] [Accepted: 07/28/2023] [Indexed: 08/07/2023]
Abstract
BACKGROUND AND AIMS Development of pancreatic ductal adenocarcinoma (PDAC) is a multistep process intensively studied; however, precocious diagnosis and effective therapy still remain unsatisfactory. The role for Notch signaling in PDAC has been discussed controversially, as both cancer-promoting and cancer-antagonizing functions have been described. Thus, an improved understanding of the underlying molecular mechanisms is necessary. Here, we focused on RBPJ, the receiving transcription factor in the Notch pathway, examined its expression pattern in PDAC, and characterized its function in mouse models of pancreatic cancer development and in the regeneration process after acute pancreatitis. METHODS Conditional transgenic mouse models were used for functional analysis of RBPJ in the adult pancreas, initiation of PDAC precursor lesions, and pancreatic regeneration. Pancreata and primary acinar cells were tested for acinar-to-ductal metaplasia together with immunohistology and comprehensive transcriptional profiling by RNA sequencing. RESULTS We identified reduced RBPJ expression in a subset of human PDAC specimens. Ptf1α-CreERT-driven depletion of RBPJ in transgenic mice revealed that its function is dispensable for the homeostasis and maintenance of adult acinar cells. However, primary RBPJ-deficient acinar cells underwent acinar-to-ductal differentiation in ex vivo. Importantly, oncogenic KRAS expression in the context of RBPJ deficiency facilitated the development of pancreatic intraepithelial neoplasia lesions with massive fibrotic stroma formation. Interestingly, RNA-sequencing data revealed a transcriptional profile associated with the cytokine/chemokine and extracellular matrix changes. In addition, lack of RBPJ delays the course of acute pancreatitis and critically impairs it in the context of KRASG12D expression. CONCLUSIONS Our findings imply that downregulation of RBPJ in PDAC patients derepresses Notch targets and promotes KRAS-mediated pancreatic acinar cells transformation and desmoplasia development.
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Affiliation(s)
- Leiling Pan
- Department of Internal Medicine I, Center for Internal Medicine, University Medical Center Ulm, Ulm, Germany
| | - Medhanie A Mulaw
- Unit for Single-cell Genomics, Medical Faculty, Ulm University, Ulm, Germany
| | - Johann Gout
- Department of Internal Medicine I, Center for Internal Medicine, University Medical Center Ulm, Ulm, Germany
| | - Min Guo
- Department of Internal Medicine I, Center for Internal Medicine, University Medical Center Ulm, Ulm, Germany
| | - Hina Zarrin
- Department of Internal Medicine I, Center for Internal Medicine, University Medical Center Ulm, Ulm, Germany
| | - Peggy Schwarz
- Department of Internal Medicine I, Center for Internal Medicine, University Medical Center Ulm, Ulm, Germany
| | - Bernd Baumann
- Institute of Physiological Chemistry, Ulm University, Ulm, Germany
| | - Thomas Seufferlein
- Department of Internal Medicine I, Center for Internal Medicine, University Medical Center Ulm, Ulm, Germany
| | - Martin Wagner
- Department of Internal Medicine I, Center for Internal Medicine, University Medical Center Ulm, Ulm, Germany
| | - Franz Oswald
- Department of Internal Medicine I, Center for Internal Medicine, University Medical Center Ulm, Ulm, Germany.
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3
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Kühlwein JK, Ruf WP, Kandler K, Witzel S, Lang C, Mulaw MA, Ekici AB, Weishaupt JH, Ludolph AC, Grozdanov V, Danzer KM. ALS is imprinted in the chromatin accessibility of blood cells. Cell Mol Life Sci 2023; 80:131. [PMID: 37095391 PMCID: PMC10126052 DOI: 10.1007/s00018-023-04769-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 03/20/2023] [Accepted: 03/27/2023] [Indexed: 04/26/2023]
Abstract
Amyotrophic Lateral Sclerosis (ALS) is a complex and incurable neurodegenerative disorder in which genetic and epigenetic factors contribute to the pathogenesis of all forms of ALS. The interplay of genetic predisposition and environmental footprints generates epigenetic signatures in the cells of affected tissues, which then alter transcriptional programs. Epigenetic modifications that arise from genetic predisposition and systemic environmental footprints should in theory be detectable not only in affected CNS tissue but also in the periphery. Here, we identify an ALS-associated epigenetic signature ('epiChromALS') by chromatin accessibility analysis of blood cells of ALS patients. In contrast to the blood transcriptome signature, epiChromALS includes also genes that are not expressed in blood cells; it is enriched in CNS neuronal pathways and it is present in the ALS motor cortex. By combining simultaneous ATAC-seq and RNA-seq with single-cell sequencing in PBMCs and motor cortex from ALS patients, we demonstrate that epigenetic changes associated with the neurodegenerative disease can be found in the periphery, thus strongly suggesting a mechanistic link between the epigenetic regulation and disease pathogenesis.
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Affiliation(s)
- Julia K Kühlwein
- Department of Neurology, University Clinic, University of Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Baden-Wuerttemberg, Germany
| | - Wolfgang P Ruf
- Department of Neurology, University Clinic, University of Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Baden-Wuerttemberg, Germany
| | - Katharina Kandler
- Department of Neurology, University Clinic, University of Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Baden-Wuerttemberg, Germany
| | - Simon Witzel
- Department of Neurology, University Clinic, University of Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Baden-Wuerttemberg, Germany
| | - Christina Lang
- Department of Neurology, University Clinic, University of Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Baden-Wuerttemberg, Germany
| | - Medhanie A Mulaw
- Medical Faculty, University of Ulm, 89081, Ulm, Baden-Wuerttemberg, Germany
| | - Arif B Ekici
- Institute of Human Genetics, University Clinic Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91054, Erlangen, Bayern, Germany
| | - Jochen H Weishaupt
- Division for Neurodegenerative Diseases, Neurology Department, University Medicine Mannheim, Heidelberg University, 68167, Mannheim, Baden-Wuerttemberg, Germany
| | - Albert C Ludolph
- Department of Neurology, University Clinic, University of Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Baden-Wuerttemberg, Germany
- German Center for Neurodegenerative Diseases (DZNE), 89081, Ulm, Baden-Wuerttemberg, Germany
| | - Veselin Grozdanov
- Department of Neurology, University Clinic, University of Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Baden-Wuerttemberg, Germany
| | - Karin M Danzer
- Department of Neurology, University Clinic, University of Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Baden-Wuerttemberg, Germany.
- German Center for Neurodegenerative Diseases (DZNE), 89081, Ulm, Baden-Wuerttemberg, Germany.
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4
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Merz S, Breunig M, Melzer MK, Heller S, Wiedenmann S, Seufferlein T, Meier M, Krüger J, Mulaw MA, Hohwieler M, Kleger A. Single-cell profiling of GP2-enriched pancreatic progenitors to simultaneously create acinar, ductal, and endocrine organoids. Theranostics 2023; 13:1949-1973. [PMID: 37064874 PMCID: PMC10091881 DOI: 10.7150/thno.78323] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 03/12/2023] [Indexed: 04/18/2023] Open
Abstract
Rationale: Pancreatic lineage specification follows the formation of tripotent pancreatic progenitors (PPs). Current protocols rebuilding PPs in vitro have an endocrine lineage bias and are mostly based on PDX1/NKX6-1 coexpression neglecting other markers decisive for PP heterogeneity and lineage potential. However, true tripotent PPs are of utmost interest to study also exocrine disorders such as pancreatic cancer and to simultaneously generate all three pancreatic lineages from the same ancestor. Methods: Here, we performed a comprehensive compound testing to advance the generation of multipotent progenitors, which were further characterized for their trilineage potential in vitro and in vivo. The heterogeneity and cell-cell communication across the PP subpopulations were analyzed via single-cell transcriptomics. Results: We introduce a novel PP differentiation platform based on a comprehensive compound screening with an advanced design of experiments computing tool to reduce impurities and to increase Glycoprotein-2 expression and subsequent trilineage potential. Superior PP tripotency was proven in vitro by the generation of acinar, endocrine, and ductal cells as well as in vivo upon orthotopic transplantation revealing all three lineages at fetal maturation level. GP2 expression levels at PP stage ascribed varying pancreatic lineage potential. Intermediate and high GP2 levels were superior in generating endocrine and duct-like organoids (PDLO). FACS-based purification of the GP2high PPs allowed the generation of pancreatic acinar-like organoids (PALO) with proper morphology and expression of digestive enzymes. scRNA-seq confirmed multipotent identity, positioned the GP2/PDX1/NKX6-1high population next to human fetal tip and trunk progenitors and identified novel ligand-receptor (LR) interactions in distinct PP subpopulations. LR validation experiments licensed midkine and VEGF signaling to increase markers labelling the single cell clusters with high GP2 expression. Conclusion: In this study, we guide human pluripotent stem cells into multipotent pancreatic progenitors. This common precursor population, which has the ability to mature into acinar, ductal and functional β-cells, serves as a basis for studying developmental processes and deciphering early cancer formation in a cell type-specific context. Using single-cell RNA sequencing and subsequent validation studies, we were able to dissect PP heterogeneity and specific cell-cell communication signals.
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Affiliation(s)
- Sarah Merz
- Institute of Molecular Oncology and Stem Cell Biology, Ulm University Hospital, Ulm, Germany
| | - Markus Breunig
- Institute of Molecular Oncology and Stem Cell Biology, Ulm University Hospital, Ulm, Germany
| | - Michael Karl Melzer
- Institute of Molecular Oncology and Stem Cell Biology, Ulm University Hospital, Ulm, Germany
- Department of Urology, Ulm University Hospital, Ulm, Germany
| | - Sandra Heller
- Institute of Molecular Oncology and Stem Cell Biology, Ulm University Hospital, Ulm, Germany
| | - Sandra Wiedenmann
- Helmholtz Pioneer Campus, Helmholtz Zentrum München, Neuherberg, Germany
| | - Thomas Seufferlein
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
| | - Matthias Meier
- Helmholtz Pioneer Campus, Helmholtz Zentrum München, Neuherberg, Germany
| | - Jana Krüger
- Institute of Molecular Oncology and Stem Cell Biology, Ulm University Hospital, Ulm, Germany
| | - Medhanie A Mulaw
- Central Unit Single Cell Sequencing, Medical Faculty, Ulm University, Ulm, Germany
| | - Meike Hohwieler
- Institute of Molecular Oncology and Stem Cell Biology, Ulm University Hospital, Ulm, Germany
- ✉ Corresponding author: Prof. Dr. Alexander Kleger, Director, Institute of Molecular Oncology and Stem Cell Biology, Ulm University Hospital, Albert-Einstein-Allee 23, 89081 Ulm, Germany. Phone: +49-731-500-44728; Fax: +49-731-500-44612;
| | - Alexander Kleger
- Institute of Molecular Oncology and Stem Cell Biology, Ulm University Hospital, Ulm, Germany
- Division of Interdisciplinary Pancreatology, Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
- ✉ Corresponding author: Prof. Dr. Alexander Kleger, Director, Institute of Molecular Oncology and Stem Cell Biology, Ulm University Hospital, Albert-Einstein-Allee 23, 89081 Ulm, Germany. Phone: +49-731-500-44728; Fax: +49-731-500-44612;
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5
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Saçma M, Matteini F, Mulaw MA, Hageb A, Bogeska R, Sakk V, Vollmer A, Marka G, Soller K, Milsom MD, Florian MC, Geiger H. Fast and high-fidelity in situ 3D imaging protocol for stem cells and niche components for mouse organs and tissues. STAR Protoc 2022; 3:101483. [PMID: 35769923 PMCID: PMC9234157 DOI: 10.1016/j.xpro.2022.101483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Quantitative 3D imaging of organ-wide cellular and subcellular components is central for revealing and understanding complex interactions between stem cells and their microenvironment. Here, we present a gentle but fast whole-mount immunofluorescence staining protocol for 3D confocal microscopy (iFAST3D) that preserves the 3D structure of the entire tissue and that of subcellular structures with high fidelity. The iFAST3D protocol enables reproducible and high-resolution 3D imaging of stem cells and various niche components for many mouse organs and tissues. For complete details on the use and execution of this protocol, please refer to Saçma et al. (2019). Whole-mount immunostaining protocol for 3D microscopy of stem cells and niche components Fast pipeline for multiple mouse organs and tissues High preservation of mouse tissue morphology and molecular integrity Allows long-term (up to 5 years) storage of samples for subsequent staining and imaging
Publisher’s note: Undertaking any experimental protocol requires adherence to local institutional guidelines for laboratory safety and ethics.
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Affiliation(s)
- Mehmet Saçma
- Institute of Molecular Medicine, Ulm University, 89081 Ulm, Germany.
| | - Francesca Matteini
- Stem Cell Aging Group, Regenerative Medicine Program, The Bellvitge Institute for Biomedical Research (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain; Program for Advancing the Clinical Translation of Regenerative Medicine of Catalonia, P-CMR[C], L'Hospitalet de Llobregat, Barcelona, Spain
| | - Medhanie A Mulaw
- Molecular Oncology Institute of Experimental Cancer Research, Medical Faculty, Ulm University, Ulm, Germany
| | - Ali Hageb
- Institute of Molecular Medicine, Ulm University, 89081 Ulm, Germany
| | - Ruzhica Bogeska
- Division of Experimental Hematology, German Cancer Research Center (DKFZ) and Heidelberg Institute for Stem Cell Technology and Experimental Medicine (HI-STEM), Heidelberg, Germany
| | - Vadim Sakk
- Institute of Molecular Medicine, Ulm University, 89081 Ulm, Germany
| | - Angelika Vollmer
- Institute of Molecular Medicine, Ulm University, 89081 Ulm, Germany
| | - Gina Marka
- Institute of Molecular Medicine, Ulm University, 89081 Ulm, Germany
| | - Karin Soller
- Institute of Molecular Medicine, Ulm University, 89081 Ulm, Germany
| | - Michael D Milsom
- Division of Experimental Hematology, German Cancer Research Center (DKFZ) and Heidelberg Institute for Stem Cell Technology and Experimental Medicine (HI-STEM), Heidelberg, Germany
| | - Maria Carolina Florian
- Stem Cell Aging Group, Regenerative Medicine Program, The Bellvitge Institute for Biomedical Research (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain; Program for Advancing the Clinical Translation of Regenerative Medicine of Catalonia, P-CMR[C], L'Hospitalet de Llobregat, Barcelona, Spain; Center for Networked Biomedical Research on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Hartmut Geiger
- Institute of Molecular Medicine, Ulm University, 89081 Ulm, Germany.
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Hageb A, Thalheim T, Nattamai KJ, Möhrle B, Saçma M, Sakk V, Thielecke L, Cornils K, Grandy C, Port F, Gottschalk KE, Mallm JP, Glauche I, Galle J, Mulaw MA, Geiger H. Reduced adhesion of aged intestinal stem cells contributes to an accelerated clonal drift. Life Sci Alliance 2022; 5:5/8/e202201408. [PMID: 35487692 PMCID: PMC9057243 DOI: 10.26508/lsa.202201408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 04/11/2022] [Accepted: 04/12/2022] [Indexed: 11/30/2022] Open
Abstract
Analysis of clonal dynamics of intestinal stem cells supports an accelerated clonal drift upon aging, likely because of reduced adhesion of aged ISCs because of reduced canonical Wnt signaling. Upon aging, the function of the intestinal epithelium declines with a concomitant increase in aging-related diseases. ISCs play an important role in this process. It is known that ISC clonal dynamics follow a neutral drift model. However, it is not clear whether the drift model is still valid in aged ISCs. Tracking of clonal dynamics by clonal tracing revealed that aged crypts drift into monoclonality substantially faster than young ones. However, ISC tracing experiments, in vivo and ex vivo, implied a similar clonal expansion ability of both young and aged ISCs. Single-cell RNA sequencing for 1,920 high Lgr5 ISCs from young and aged mice revealed increased heterogeneity among subgroups of aged ISCs. Genes associated with cell adhesion were down-regulated in aged ISCs. ISCs of aged mice indeed show weaker adhesion to the matrix. Simulations applying a single cell–based model of the small intestinal crypt demonstrated an accelerated clonal drift at reduced adhesion strength, implying a central role for reduced adhesion for affecting clonal dynamics upon aging.
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Affiliation(s)
- Ali Hageb
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Torsten Thalheim
- Interdisciplinary Centre for Bioinformatics, University Leipzig, Leipzig, Germany
| | - Kalpana J Nattamai
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center (CCHMC), Cincinnati, OH, USA
| | - Bettina Möhrle
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Mehmet Saçma
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Vadim Sakk
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Lars Thielecke
- Institute for Medical Informatics and Biometry, Technische Universität Dresden, Dresden, Germany
| | - Kerstin Cornils
- Clinic of Pediatric Hematology and Oncology, Division of Pediatric Stem Cell Transplantation and Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Research Institute Children's Cancer Center Hamburg, Hamburg, Germany
| | - Carolin Grandy
- Institute for Experimental Physics, Ulm University, Ulm, Germany
| | - Fabian Port
- Institute for Experimental Physics, Ulm University, Ulm, Germany
| | - Kay-E Gottschalk
- Institute for Experimental Physics, Ulm University, Ulm, Germany
| | - Jan-Philipp Mallm
- Division of Chromatin Networks, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Ingmar Glauche
- Institute for Medical Informatics and Biometry, Technische Universität Dresden, Dresden, Germany
| | - Jörg Galle
- Interdisciplinary Centre for Bioinformatics, University Leipzig, Leipzig, Germany
| | - Medhanie A Mulaw
- Central Unit Single Cell Sequencing, Medical Faculty, Ulm University, Ulm, Germany
| | - Hartmut Geiger
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
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7
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Matteini F, Mulaw MA, Florian MC. Aging of the Hematopoietic Stem Cell Niche: New Tools to Answer an Old Question. Front Immunol 2021; 12:738204. [PMID: 34858399 PMCID: PMC8631970 DOI: 10.3389/fimmu.2021.738204] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 10/11/2021] [Indexed: 12/31/2022] Open
Abstract
The hematopoietic stem cell (HSC) niche is a specialized microenvironment, where a complex and dynamic network of interactions across multiple cell types regulates HSC function. During the last years, it became progressively clearer that changes in the HSC niche are responsible for specific alterations of HSC behavior. The aging of the bone marrow (BM) microenvironment has been shown to critically contribute to the decline in HSC function over time. Interestingly, while upon aging some niche structures within the BM are degenerated and negatively affect HSC functionality, other niche cells and specific signals are preserved and essential to retaining HSC function and regenerative capacity. These new findings on the role of the aging BM niche critically depend on the implementation of new technical tools, developed thanks to transdisciplinary approaches, which bring together different scientific fields. For example, the development of specific mouse models in addition to coculture systems, new 3D-imaging tools, ossicles, and ex-vivo BM mimicking systems is highlighting the importance of new technologies to unravel the complexity of the BM niche on aging. Of note, an exponential impact in the understanding of this biological system has been recently brought by single-cell sequencing techniques, spatial transcriptomics, and implementation of artificial intelligence and deep learning approaches to data analysis and integration. This review focuses on how the aging of the BM niche affects HSCs and on the new tools to investigate the specific alterations occurring in the BM upon aging. All these new advances in the understanding of the BM niche and its regulatory function on HSCs have the potential to lead to novel therapeutical approaches to preserve HSC function upon aging and disease.
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Affiliation(s)
- Francesca Matteini
- Stem Cell Aging Group, Regenerative Medicine Program, The Bellvitge Institute for Biomedical Research (IDIBELL), Barcelona, Spain.,Program for Advancing the Clinical Translation of Regenerative Medicine of Catalonia, P-CMR[C], Barcelona, Spain
| | - Medhanie A Mulaw
- Institute for Molecular Medicine and Internal Medicine I, Ulm University and University Hospital Ulm, Ulm, Germany
| | - M Carolina Florian
- Stem Cell Aging Group, Regenerative Medicine Program, The Bellvitge Institute for Biomedical Research (IDIBELL), Barcelona, Spain.,Program for Advancing the Clinical Translation of Regenerative Medicine of Catalonia, P-CMR[C], Barcelona, Spain.,Center for Networked Biomedical Research on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
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8
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Catanese A, Rajkumar S, Sommer D, Freisem D, Wirth A, Aly A, Massa‐López D, Olivieri A, Torelli F, Ioannidis V, Lipecka J, Guerrera IC, Zytnicki D, Ludolph A, Kabashi E, Mulaw MA, Roselli F, Böckers TM. Synaptic disruption and CREB-regulated transcription are restored by K + channel blockers in ALS. EMBO Mol Med 2021; 13:e13131. [PMID: 34125498 PMCID: PMC8261490 DOI: 10.15252/emmm.202013131] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 05/19/2021] [Accepted: 05/21/2021] [Indexed: 11/15/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease, which is still missing effective therapeutic strategies. Although manipulation of neuronal excitability has been tested in murine and human ALS models, it is still under debate whether neuronal activity might represent a valid target for efficient therapies. In this study, we exploited a combination of transcriptomics, proteomics, optogenetics and pharmacological approaches to investigate the activity-related pathological features of iPSC-derived C9orf72-mutant motoneurons (MN). We found that human ALSC9orf72 MN are characterized by accumulation of aberrant aggresomes, reduced expression of synaptic genes, loss of synaptic contacts and a dynamic "malactivation" of the transcription factor CREB. A similar phenotype was also found in TBK1-mutant MN and upon overexpression of poly(GA) aggregates in primary neurons, indicating a strong convergence of pathological phenotypes on synaptic dysregulation. Notably, these alterations, along with neuronal survival, could be rescued by treating ALS-related neurons with the K+ channel blockers Apamin and XE991, which, respectively, target the SK and the Kv7 channels. Thus, our study shows that restoring the activity-dependent transcriptional programme and synaptic composition exerts a neuroprotective effect on ALS disease progression.
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Affiliation(s)
- Alberto Catanese
- Institute of Anatomy and Cell BiologyUlm University School of MedicineUlmGermany
| | - Sandeep Rajkumar
- Institute of Anatomy and Cell BiologyUlm University School of MedicineUlmGermany
| | - Daniel Sommer
- Institute of Anatomy and Cell BiologyUlm University School of MedicineUlmGermany
| | - Dennis Freisem
- Institute of Anatomy and Cell BiologyUlm University School of MedicineUlmGermany
| | - Alexander Wirth
- Institute of Anatomy and Cell BiologyUlm University School of MedicineUlmGermany
| | - Amr Aly
- Institute of Anatomy and Cell BiologyUlm University School of MedicineUlmGermany
| | - David Massa‐López
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE)Ulm siteUlmGermany
| | - Andrea Olivieri
- Institute of Anatomy and Cell BiologyUlm University School of MedicineUlmGermany
| | - Federica Torelli
- Institute of Anatomy and Cell BiologyUlm University School of MedicineUlmGermany
| | - Valentin Ioannidis
- Institute of Anatomy and Cell BiologyUlm University School of MedicineUlmGermany
| | - Joanna Lipecka
- Proteomics platform NeckerINSERM US24/CNRS UMS3633Université de Paris – Structure Fédérative de Recherche NeckerParisFrance
| | - Ida Chiara Guerrera
- Proteomics platform NeckerINSERM US24/CNRS UMS3633Université de Paris – Structure Fédérative de Recherche NeckerParisFrance
| | - Daniel Zytnicki
- SPPIN ‐ Saints‐Pères Paris Institute for the NeurosciencesCNRSUniversité de ParisParis, Paris
| | - Albert Ludolph
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE)Ulm siteUlmGermany
- Department of NeurologyUlm University School of MedicineUlmGermany
| | - Edor Kabashi
- Institute of Translational Research for Neurological DisordersINSERM UMR 1163Imagine InstituteParisFrance
| | - Medhanie A Mulaw
- Internal Medicine I and Institute of Molecular Medicine and Stem Cell AgingMedical FacultyUniversity Hospital UlmUniversity of Ulm UniversityUlmGermany
| | - Francesco Roselli
- Institute of Anatomy and Cell BiologyUlm University School of MedicineUlmGermany
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE)Ulm siteUlmGermany
- Department of NeurologyUlm University School of MedicineUlmGermany
| | - Tobias M Böckers
- Institute of Anatomy and Cell BiologyUlm University School of MedicineUlmGermany
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE)Ulm siteUlmGermany
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9
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Huppertz S, Senger K, Brown A, Leins H, Eiwen K, Mulaw MA, Geiger H, Becker M. KDM6A, a histone demethylase, regulates stress hematopoiesis and early B-cell differentiation. Exp Hematol 2021; 99:32-43.e13. [PMID: 34126175 DOI: 10.1016/j.exphem.2021.06.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 05/26/2021] [Accepted: 06/09/2021] [Indexed: 11/16/2022]
Abstract
Histone methylases and demethylases regulate gene expression programs in hematopoiesis. The molecular function of the demethylase KDM6A in normal hematopoiesis and, in particular, for the hematopoietic stem and progenitor cell (HSPC) compartment remains only partially understood. Female but not male Kdm6a-/- HSPCs were functionally impaired in adoptive transfer experiments as well as upon proliferative stress induced by 5-fluorouracil. Loss of Kdm6a affected primarily early B cells and erythroid and myeloid progenitor cells with respect to both number and function. Global gene expression analyses revealed a shared altered gene signature in Kdm6a-/- pro-B and pre-B cells that is also present in HSPCs, supporting that altered B-cell differentiation in Kdm6a-/- animals is already initiated in HSPCs. Interestingly, loss of KDM6A did not affect the global level of methylation of H3K27, its presumed target, in hematopoietic cells. Our data indicate a critical role for KDM6A in the regulation of hematopoietic differentiation and differentiation-specific gene expression programs, with a prominent role in early B-cell differentiation that is likely independent of H3K27 methylation status.
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Affiliation(s)
- Sascha Huppertz
- Institute for Medical Radiology and Cell Research (MSZ), Center of Experimental Molecular Medicine (ZEMM), Würzburg University, Würzburg, Germany
| | - Katharina Senger
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Andreas Brown
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Hanna Leins
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Karina Eiwen
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Medhanie A Mulaw
- Institute of Experimental Cancer Research, Ulm University, Ulm, Germany
| | - Hartmut Geiger
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Matthias Becker
- Institute for Medical Radiology and Cell Research (MSZ), Center of Experimental Molecular Medicine (ZEMM), Würzburg University, Würzburg, Germany.
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10
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Grigoryan A, Pospiech J, Krämer S, Lipka D, Liehr T, Geiger H, Kimura H, Mulaw MA, Florian MC. Attrition of X Chromosome Inactivation in Aged Hematopoietic Stem Cells. Stem Cell Reports 2021; 16:708-716. [PMID: 33798450 PMCID: PMC8072063 DOI: 10.1016/j.stemcr.2021.03.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 03/03/2021] [Accepted: 03/04/2021] [Indexed: 01/03/2023] Open
Abstract
During X chromosome inactivation (XCI), the inactive X chromosome (Xi) is recruited to the nuclear lamina at the nuclear periphery. Beside X chromosome reactivation resulting in a highly penetrant aging-like hematopoietic malignancy, little is known about XCI in aged hematopoietic stem cells (HSCs). Here, we demonstrate that LaminA/C defines a distinct repressive nuclear compartment for XCI in young HSCs, and its reduction in aged HSCs correlates with an impairment in the overall control of XCI. Integrated omics analyses reveal higher variation in gene expression, global hypomethylation, and significantly increased chromatin accessibility on the X chromosome (Chr X) in aged HSCs. In summary, our data support the role of LaminA/C in the establishment of a special repressive compartment for XCI in HSCs, which is impaired upon aging.
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Affiliation(s)
- Ani Grigoryan
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081 Ulm, Germany
| | - Johannes Pospiech
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081 Ulm, Germany
| | - Stephen Krämer
- Section Translational Cancer Epigenomics, Division of Translational Medical Oncology, German Cancer Research Center (DKFZ) & National Center for Tumor Diseases (NCT) Heidelberg, Heidelberg, Germany; Bioinformatics and Omics Data Analysis, German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Biosciences, University of Heidelberg, Heidelberg, Germany; Biomedical Informatics, Data Mining and Data Analytics, Faculty of Applied Computer Science and Medical Faculty, University of Augsburg, Augsburg, Germany
| | - Daniel Lipka
- Section Translational Cancer Epigenomics, Division of Translational Medical Oncology, German Cancer Research Center (DKFZ) & National Center for Tumor Diseases (NCT) Heidelberg, Heidelberg, Germany
| | - Thomas Liehr
- Jena University Hospital, Friedrich Schiller University, Institute of Human Genetics, Am Klinikum 1, 07747 Jena, Germany
| | - Hartmut Geiger
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081 Ulm, Germany
| | - Hiroshi Kimura
- Cell Biology Center, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Medhanie A Mulaw
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081 Ulm, Germany; Department of Internal Medicine I, University Hospital Ulm, Ulm, Germany.
| | - Maria Carolina Florian
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081 Ulm, Germany; Stem Cell Aging Group, Regenerative Medicine Program, Bellvitge Institute for Biomedical Research (IDIBELL) and Program for advancing the Clinical Translation of Regenerative Medicine of Catalonia, P-CMR[C], Av. Gran Via 199-203, 08908, L'Hospitalet de Llobregat, Barcelona, Spain; Center for Networked Biomedical Research on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain.
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11
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Grinhagens S, Dünkler A, Wu Y, Rieger L, Brenner P, Gronemeyer T, Mulaw MA, Johnsson N. A time-resolved interaction analysis of Bem1 reconstructs the flow of Cdc42 during polar growth. Life Sci Alliance 2020; 3:e202000813. [PMID: 32737079 PMCID: PMC7409549 DOI: 10.26508/lsa.202000813] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/20/2020] [Accepted: 07/21/2020] [Indexed: 12/16/2022] Open
Abstract
Cdc42 organizes cellular polarity and directs the formation of cellular structures in many organisms. By locating Cdc24, the source of active Cdc42, to the growing front of the yeast cell, the scaffold protein Bem1, is instrumental in shaping the cellular gradient of Cdc42. This gradient instructs bud formation, bud growth, or cytokinesis through the actions of a diverse set of effector proteins. To address how Bem1 participates in these transformations, we systematically tracked its protein interactions during one cell cycle to define the ensemble of Bem1 interaction states for each cell cycle stage. Mutants of Bem1 that interact with only a discrete subset of the interaction partners allowed to assign specific functions to different interaction states and identified the determinants for their cellular distributions. The analysis characterizes Bem1 as a cell cycle-specific shuttle that distributes active Cdc42 from its source to its effectors. It further suggests that Bem1 might convert the PAKs Cla4 and Ste20 into their active conformations.
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Affiliation(s)
- Sören Grinhagens
- Department of Biology, Institute of Molecular Genetics and Cell Biology, Ulm University, Ulm, Germany
| | - Alexander Dünkler
- Department of Biology, Institute of Molecular Genetics and Cell Biology, Ulm University, Ulm, Germany
| | - Yehui Wu
- Department of Biology, Institute of Molecular Genetics and Cell Biology, Ulm University, Ulm, Germany
| | - Lucia Rieger
- Department of Biology, Institute of Molecular Genetics and Cell Biology, Ulm University, Ulm, Germany
| | - Philipp Brenner
- Department of Biology, Institute of Molecular Genetics and Cell Biology, Ulm University, Ulm, Germany
| | - Thomas Gronemeyer
- Department of Biology, Institute of Molecular Genetics and Cell Biology, Ulm University, Ulm, Germany
| | - Medhanie A Mulaw
- Comprehensive Cancer Center Ulm, Institute of Experimental Cancer Research, Ulm University, Ulm, Germany
| | - Nils Johnsson
- Department of Biology, Institute of Molecular Genetics and Cell Biology, Ulm University, Ulm, Germany
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12
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Abdelrasoul H, Vadakumchery A, Werner M, Lenk L, Khadour A, Young M, El Ayoubi O, Vogiatzi F, Krämer M, Schmid V, Chen Z, Yousafzai Y, Cario G, Schrappe M, Müschen M, Halsey C, Mulaw MA, Schewe DM, Hobeika E, Alsadeq A, Jumaa H. Synergism between IL7R and CXCR4 drives BCR-ABL induced transformation in Philadelphia chromosome-positive acute lymphoblastic leukemia. Nat Commun 2020; 11:3194. [PMID: 32581241 PMCID: PMC7314847 DOI: 10.1038/s41467-020-16927-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 05/29/2020] [Indexed: 12/12/2022] Open
Abstract
Ph+ acute lymphoblastic leukemia (ALL) is characterized by the expression of an oncogenic fusion kinase termed BCR-ABL1. Here, we show that interleukin 7 receptor (IL7R) interacts with the chemokine receptor CXCR4 to recruit BCR-ABL1 and JAK kinases in close proximity. Treatment with BCR-ABL1 kinase inhibitors results in elevated expression of IL7R which enables the survival of transformed cells when IL7 was added together with the kinase inhibitors. Importantly, treatment with anti-IL7R antibodies prevents leukemia development in xenotransplantation models using patient-derived Ph+ ALL cells. Our results suggest that the association between IL7R and CXCR4 serves as molecular platform for BCR-ABL1-induced transformation and development of Ph+ ALL. Targeting this platform with anti-IL7R antibody eliminates Ph+ ALL cells including those with resistance to commonly used ABL1 kinase inhibitors. Thus, anti-IL7R antibodies may provide alternative treatment options for ALL in general and may suppress incurable drug-resistant leukemia forms.
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Affiliation(s)
- Hend Abdelrasoul
- Institute of Immunology, Ulm University Medical Center, 89081, Ulm, Germany
| | - Anila Vadakumchery
- Institute of Immunology, Ulm University Medical Center, 89081, Ulm, Germany
| | - Markus Werner
- Institute of Immunology, Ulm University Medical Center, 89081, Ulm, Germany
| | - Lennart Lenk
- Department of Pediatrics I, ALL-BFM Study Group, Christian-Albrechts University Kiel and University Medical Center Schleswig-Holstein, Kiel, Germany
| | - Ahmad Khadour
- Institute of Immunology, Ulm University Medical Center, 89081, Ulm, Germany
| | - Marc Young
- Institute of Immunology, Ulm University Medical Center, 89081, Ulm, Germany
| | - Omar El Ayoubi
- Institute of Immunology, Ulm University Medical Center, 89081, Ulm, Germany
| | - Fotini Vogiatzi
- Department of Pediatrics I, ALL-BFM Study Group, Christian-Albrechts University Kiel and University Medical Center Schleswig-Holstein, Kiel, Germany
| | - Markus Krämer
- Institute of Immunology, Ulm University Medical Center, 89081, Ulm, Germany
| | - Vera Schmid
- Institute of Immunology, Ulm University Medical Center, 89081, Ulm, Germany
| | - Zhengshan Chen
- Department of Systems Biology and City of Hope Comprehensive Cancer Center, Monrovia, CA, USA
| | - Yasar Yousafzai
- Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Gunnar Cario
- Department of Pediatrics I, ALL-BFM Study Group, Christian-Albrechts University Kiel and University Medical Center Schleswig-Holstein, Kiel, Germany
| | - Martin Schrappe
- Department of Pediatrics I, ALL-BFM Study Group, Christian-Albrechts University Kiel and University Medical Center Schleswig-Holstein, Kiel, Germany
| | - Markus Müschen
- Department of Systems Biology and City of Hope Comprehensive Cancer Center, Monrovia, CA, USA
| | - Christina Halsey
- Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Medhanie A Mulaw
- Institute of Experimental Cancer Research, Medical Faculty, University of Ulm, Ulm, Germany
| | - Denis M Schewe
- Department of Pediatrics I, ALL-BFM Study Group, Christian-Albrechts University Kiel and University Medical Center Schleswig-Holstein, Kiel, Germany
| | - Elias Hobeika
- Institute of Immunology, Ulm University Medical Center, 89081, Ulm, Germany
| | - Ameera Alsadeq
- Institute of Immunology, Ulm University Medical Center, 89081, Ulm, Germany
| | - Hassan Jumaa
- Institute of Immunology, Ulm University Medical Center, 89081, Ulm, Germany.
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13
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Chollet J, Dünkler A, Bäuerle A, Vivero-Pol L, Mulaw MA, Gronemeyer T, Johnsson N. Cdc24 interacts with septins to create a positive feedback loop during bud site assembly in yeast. J Cell Sci 2020; 133:jcs240283. [PMID: 32327559 DOI: 10.1242/jcs.240283] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 04/08/2020] [Indexed: 01/04/2023] Open
Abstract
Yeast cells select the position of their new bud at the beginning of each cell cycle. The recruitment of septins to this prospective bud site is one of the critical events in a complex assembly pathway that culminates in the outgrowth of a new daughter cell. During recruitment, septin rods follow the high concentration of Cdc42GTP that is generated by the focused localization of the Cdc42 guanine-nucleotide-exchange factor Cdc24. We show that, shortly before budding, Cdc24 not only activates Cdc42 but also transiently interacts with Cdc11, the septin subunit that caps both ends of the septin rods. Mutations in Cdc24 that reduce affinity to Cdc11 impair septin recruitment and decrease the stability of the polarity patch. The interaction between septins and Cdc24 thus reinforces bud assembly at sites where septin structures are formed. Once the septins polymerize to form the septin ring, Cdc24 is found at the cortex of the bud and directs further outgrowth from this position.
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Affiliation(s)
- Julian Chollet
- Institute of Molecular Genetics and Cell Biology, Department of Biology, Ulm University, James-Franck-Ring N27, D-89081 Ulm, Germany
| | - Alexander Dünkler
- Institute of Molecular Genetics and Cell Biology, Department of Biology, Ulm University, James-Franck-Ring N27, D-89081 Ulm, Germany
| | - Anne Bäuerle
- Institute of Molecular Genetics and Cell Biology, Department of Biology, Ulm University, James-Franck-Ring N27, D-89081 Ulm, Germany
| | - Laura Vivero-Pol
- Institute of Molecular Genetics and Cell Biology, Department of Biology, Ulm University, James-Franck-Ring N27, D-89081 Ulm, Germany
| | - Medhanie A Mulaw
- Comprehensive Cancer Center Ulm, Institute of Experimental Cancer Research, Ulm University, James-Franck-Ring N27, D-89081 Ulm, Germany
| | - Thomas Gronemeyer
- Institute of Molecular Genetics and Cell Biology, Department of Biology, Ulm University, James-Franck-Ring N27, D-89081 Ulm, Germany
| | - Nils Johnsson
- Institute of Molecular Genetics and Cell Biology, Department of Biology, Ulm University, James-Franck-Ring N27, D-89081 Ulm, Germany
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14
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Glomb O, Wu Y, Rieger L, Rüthnick D, Mulaw MA, Johnsson N. The cell polarity proteins Boi1 and Boi2 direct an actin nucleation complex to sites of exocytosis in Saccharomyces cerevisiae. J Cell Sci 2020; 133:jcs.237982. [PMID: 31964708 DOI: 10.1242/jcs.237982] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 12/19/2019] [Indexed: 01/13/2023] Open
Abstract
Owing to the local enrichment of factors that influence its dynamics and organization, the actin cytoskeleton displays different shapes and functions within the same cell. In yeast cells, post-Golgi vesicles ride on long actin cables to the bud tip. The proteins Boi1 and Boi2 (Boi1/2) participate in tethering and docking these vesicles to the plasma membrane. Here, we show in Saccharomyces cerevisiae that Boi1/2 also recruit nucleation and elongation factors to form actin filaments at sites of exocytosis. Disrupting the connection between Boi1/2 and the nucleation factor Bud6 impairs filament formation, reduces the directed movement of the vesicles to the tip and shortens the vesicles' tethering time at the cortex. Transplanting Boi1 from the bud tip to the peroxisomal membrane partially redirects the actin cytoskeleton and the vesicular flow towards the peroxisome, and creates an alternative, rudimentary vesicle-docking zone. We conclude that Boi1/2, through interactions with Bud6 and Bni1, induce the formation of a cortical actin structure that receives and aligns incoming vesicles before fusion with the membrane.
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Affiliation(s)
- Oliver Glomb
- Institute of Molecular Genetics and Cell Biology, Department of Biology, Ulm University, James-Franck-Ring N27, D-89081 Ulm, Germany
| | - Yehui Wu
- Institute of Molecular Genetics and Cell Biology, Department of Biology, Ulm University, James-Franck-Ring N27, D-89081 Ulm, Germany
| | - Lucia Rieger
- Institute of Molecular Genetics and Cell Biology, Department of Biology, Ulm University, James-Franck-Ring N27, D-89081 Ulm, Germany
| | - Diana Rüthnick
- ZMBH, University of Heidelberg, Im Neuenheimer Feld 282, D-69120 Heidelberg, Germany
| | - Medhanie A Mulaw
- Comprehensive Cancer Center Ulm, Institute of Experimental Cancer Research, Ulm University, James-Franck-Ring N27, D-89081 Ulm, Germany
| | - Nils Johnsson
- Institute of Molecular Genetics and Cell Biology, Department of Biology, Ulm University, James-Franck-Ring N27, D-89081 Ulm, Germany
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15
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Saçma M, Pospiech J, Bogeska R, de Back W, Mallm JP, Sakk V, Soller K, Marka G, Vollmer A, Karns R, Cabezas-Wallscheid N, Trumpp A, Méndez-Ferrer S, Milsom MD, Mulaw MA, Geiger H, Florian MC. Haematopoietic stem cells in perisinusoidal niches are protected from ageing. Nat Cell Biol 2019; 21:1309-1320. [PMID: 31685996 DOI: 10.1038/s41556-019-0418-y] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 09/30/2019] [Indexed: 12/11/2022]
Abstract
With ageing, intrinsic haematopoietic stem cell (HSC) activity decreases, resulting in impaired tissue homeostasis, reduced engraftment following transplantation and increased susceptibility to diseases. However, whether ageing also affects the HSC niche, and thereby impairs its capacity to support HSC function, is still widely debated. Here, by using in-vivo long-term label-retention assays we demonstrate that aged label-retaining HSCs, which are, in old mice, the most quiescent HSC subpopulation with the highest regenerative capacity and cellular polarity, reside predominantly in perisinusoidal niches. Furthermore, we demonstrate that sinusoidal niches are uniquely preserved in shape, morphology and number on ageing. Finally, we show that myeloablative chemotherapy can selectively disrupt aged sinusoidal niches in the long term, which is linked to the lack of recovery of endothelial Jag2 at sinusoids. Overall, our data characterize the functional alterations of the aged HSC niche and unveil that perisinusoidal niches are uniquely preserved and thereby protect HSCs from ageing.
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Affiliation(s)
- Mehmet Saçma
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Johannes Pospiech
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Ruzhica Bogeska
- Heidelberg Institute for Stem Cell Technology and Experimental Medicine gGmbH, Deutsches Krebsforschungszentrum, Division of Experimental Hematology, Heidelberg, Germany
| | - Walter de Back
- Institute for Medical Informatics and Biometry, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Jan-Philipp Mallm
- Deutsches Krebsforschungszentrum, Division of Chromatin Network, Heidelberg, Germany
| | - Vadim Sakk
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Karin Soller
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Gina Marka
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Angelika Vollmer
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Rebekah Karns
- Division of Gastroenterology, Hepatology, and Nutrition, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, OH, USA
| | | | - Andreas Trumpp
- Heidelberg Institute for Stem Cell Technology and Experimental Medicine gGmbH, Deutsches Krebsforschungszentrum, Division of Experimental Hematology, Heidelberg, Germany
| | - Simón Méndez-Ferrer
- Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute and Department of Hematology, University of Cambridge, Cambridge, United Kingdom
- National Health Service Blood & Transplant, Cambridge Biomedical Campus, Cambridge, United Kingdom
| | - Michael D Milsom
- Heidelberg Institute for Stem Cell Technology and Experimental Medicine gGmbH, Deutsches Krebsforschungszentrum, Division of Experimental Hematology, Heidelberg, Germany
| | - Medhanie A Mulaw
- Molecular Oncology Institute of Experimental Cancer Research, Medical Faculty, University of Ulm, Ulm, Germany
| | - Hartmut Geiger
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, OH, USA
| | - Maria Carolina Florian
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany.
- Center for Regenerative Medicine in Barcelona, Bellvitge Institute for Biomedical Research, Barcelona, Spain.
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16
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Grigoryan A, Guidi N, Senger K, Liehr T, Soller K, Marka G, Vollmer A, Markaki Y, Leonhardt H, Buske C, Lipka DB, Plass C, Zheng Y, Mulaw MA, Geiger H, Florian MC. LaminA/C regulates epigenetic and chromatin architecture changes upon aging of hematopoietic stem cells. Genome Biol 2018; 19:189. [PMID: 30404662 PMCID: PMC6223039 DOI: 10.1186/s13059-018-1557-3] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 10/04/2018] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND The decline of hematopoietic stem cell (HSC) function upon aging contributes to aging-associated immune remodeling and leukemia pathogenesis. Aged HSCs show changes to their epigenome, such as alterations in DNA methylation and histone methylation and acetylation landscapes. We previously showed a correlation between high Cdc42 activity in aged HSCs and the loss of intranuclear epigenetic polarity, or epipolarity, as indicated by the specific distribution of H4K16ac. RESULTS Here, we show that not all histone modifications display a polar localization and that a reduction in H4K16ac amount and loss of epipolarity are specific to aged HSCs. Increasing the levels of H4K16ac is not sufficient to restore polarity in aged HSCs and the restoration of HSC function. The changes in H4K16ac upon aging and rejuvenation of HSCs are correlated with a change in chromosome 11 architecture and alterations in nuclear volume and shape. Surprisingly, by taking advantage of knockout mouse models, we demonstrate that increased Cdc42 activity levels correlate with the repression of the nuclear envelope protein LaminA/C, which controls chromosome 11 distribution, H4K16ac polarity, and nuclear volume and shape in aged HSCs. CONCLUSIONS Collectively, our data show that chromatin architecture changes in aged stem cells are reversible by decreasing the levels of Cdc42 activity, revealing an unanticipated way to pharmacologically target LaminA/C expression and revert alterations of the epigenetic architecture in aged HSCs.
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Affiliation(s)
- Ani Grigoryan
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081, Ulm, Germany
| | - Novella Guidi
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081, Ulm, Germany
| | - Katharina Senger
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081, Ulm, Germany
| | - Thomas Liehr
- Institute of Human Genetics, Jena University Hospital, Friedrich Schiller University, Kollegiengasse 10, 07743, Jena, Germany
| | - Karin Soller
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081, Ulm, Germany
| | - Gina Marka
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081, Ulm, Germany
| | - Angelika Vollmer
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081, Ulm, Germany
| | - Yolanda Markaki
- Department of Biology II and Center for Integrated Protein Science Munich (CIPSM), Ludwig Maximilians University Munich, Großhaderner Strasse 2, 82152, Planegg-Martinsried, Germany
| | - Heinrich Leonhardt
- Department of Biology II and Center for Integrated Protein Science Munich (CIPSM), Ludwig Maximilians University Munich, Großhaderner Strasse 2, 82152, Planegg-Martinsried, Germany
| | - Christian Buske
- Institute of Experimental Cancer Research, Comprehensive Cancer Center Ulm, University Hospital Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Daniel B Lipka
- Regulation of Cellular Differentiation Group, INF280, 69120, Heidelberg, Germany
- Division of Epigenomics and Cancer Risk Factors, German Cancer Research Center (DKFZ), INF280, 69120, Heidelberg, Germany
| | - Christoph Plass
- Division of Epigenomics and Cancer Risk Factors, German Cancer Research Center (DKFZ), INF280, 69120, Heidelberg, Germany
| | - Yi Zheng
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, OH, USA
| | - Medhanie A Mulaw
- Institute of Experimental Cancer Research, Comprehensive Cancer Center Ulm, University Hospital Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Hartmut Geiger
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081, Ulm, Germany
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, OH, USA
| | - Maria Carolina Florian
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081, Ulm, Germany.
- Center of Regenerative Medicine in Barcelona (CMRB), Hospital Duran i Reynals, Gran Via de l'Hospitalet, 199-203, L'Hospitalet de Llobregat, 08908, Barcelona, Spain.
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17
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Florian MC, Klose M, Sacma M, Jablanovic J, Knudson L, Nattamai KJ, Marka G, Vollmer A, Soller K, Sakk V, Cabezas-Wallscheid N, Zheng Y, Mulaw MA, Glauche I, Geiger H. Aging alters the epigenetic asymmetry of HSC division. PLoS Biol 2018; 16:e2003389. [PMID: 30235201 PMCID: PMC6168157 DOI: 10.1371/journal.pbio.2003389] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 10/02/2018] [Accepted: 08/23/2018] [Indexed: 01/01/2023] Open
Abstract
Hematopoietic stem cells (HSCs) balance self-renewal and differentiation to maintain homeostasis. With aging, the frequency of polar HSCs decreases. Cell polarity in HSCs is controlled by the activity of the small RhoGTPase cell division control protein 42 (Cdc42). Here we demonstrate—using a comprehensive set of paired daughter cell analyses that include single-cell 3D confocal imaging, single-cell transplants, single-cell RNA-seq, and single-cell transposase-accessible chromatin sequencing (ATAC-seq)—that the outcome of HSC divisions is strongly linked to the polarity status before mitosis, which is in turn determined by the level of the activity Cdc42 in stem cells. Aged apolar HSCs undergo preferentially self-renewing symmetric divisions, resulting in daughter stem cells with reduced regenerative capacity and lymphoid potential, while young polar HSCs undergo preferentially asymmetric divisions. Mathematical modeling in combination with experimental data implies a mechanistic role of the asymmetric sorting of Cdc42 in determining the potential of daughter cells via epigenetic mechanisms. Therefore, molecules that control HSC polarity might serve as modulators of the mode of stem cell division regulating the potential of daughter cells. Stem cells are unique cells that can differentiate to produce more stem cells or other types of cells and can divide both symmetrically (to produce daughter cells with the same fate) and asymmetrically (to produce one daughter cell that retains stem cell potential and one that differentiates). The mechanisms that control the outcome of stem cell divisions have been the focus of many studies; however, they remain mainly unknown. Here, we have analyzed these mechanisms in murine hematopoietic stem cells (HSCs) by directly comparing the epigenetic signature, the transcriptome, and the function of the two daughter cells stemming from the first division of either a young or an aged HSC. We observe that, while young HSCs divide mainly asymmetrically, aged HSCs divide primarily symmetrically. We find that the mode of division is tightly linked to stem cell polarity and is regulated by the activity level of the small RhoGTPase cell division control protein 42 (Cdc42). In addition, we show that the potential of daughter cells is further linked to the amount of the epigenetic mark H4K16ac and also to the amount of open chromatin allocated to a daughter cell, but it is not linked to its transcriptome. In summary, our study suggests that HSC polarity linked to Cdc42 activity drives the mode of division, while epigenetic mechanisms determine the functional outcome of the stem cell division.
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Affiliation(s)
- M. Carolina Florian
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
- * E-mail: (MCF); (HG)
| | - Markus Klose
- Institute for Medical Informatics and Biometry, Carl Gustav Carus Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Mehmet Sacma
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | - Jelena Jablanovic
- Max Planck Institute (MPI) of Immunobiology and Epigenetics, Freiburg, Germany
| | - Luke Knudson
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | - Kalpana J. Nattamai
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Gina Marka
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | - Angelika Vollmer
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | - Karin Soller
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | - Vadim Sakk
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | | | - Yi Zheng
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Medhanie A. Mulaw
- Institute of Experimental Cancer Research, Medical Faculty, University of Ulm, Ulm, Germany
| | - Ingmar Glauche
- Institute for Medical Informatics and Biometry, Carl Gustav Carus Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Hartmut Geiger
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
- * E-mail: (MCF); (HG)
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18
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Langgartner D, Füchsl AM, Kaiser LM, Meier T, Foertsch S, Buske C, Reber SO, Mulaw MA. Biomarkers for classification and class prediction of stress in a murine model of chronic subordination stress. PLoS One 2018; 13:e0202471. [PMID: 30183738 PMCID: PMC6124755 DOI: 10.1371/journal.pone.0202471] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 08/03/2018] [Indexed: 12/22/2022] Open
Abstract
Selye defined stress as the nonspecific response of the body to any demand and thus an inherent element of all diseases. He reported that rats show adrenal hypertrophy, thymicolymphatic atrophy, and gastrointestinal ulceration, referred to as the stress triad, upon repeated exposure to nocuous agents. However, Selye's stress triad as well as its extended version including reduced body weight gain, increased plasma glucocorticoid (GC) concentrations, and GC resistance of target cells do not represent reliable discriminatory biomarkers for chronic stress. To address this, we collected multivariate biological data from male mice exposed either to the preclinically validated chronic subordinate colony housing (CSC) paradigm or to single-housed control (SHC) condition. We then used principal component analysis (PCA), top scoring pairs (tsp) and support vector machines (SVM) analyses to identify markers that discriminate between chronically stressed and non-stressed mice. PCA segregated stressed and non-stressed mice, with high loading for some of Selye's stress triad parameters. The tsp analysis, a simple and highly interpretable statistical approach, identified left adrenal weight and relative thymus weight as the pair with the highest discrimination score and prediction accuracy validated by a blinded dataset (92% p-value < 0.0001; SVM model = 83% accuracy and p-value < 0.0001). This finding clearly shows that simultaneous consideration of these two parameters can be used as a reliable biomarker of chronic stress status. Furthermore, our analysis highlights that the tsp approach is a very powerful method whose application extends beyond what has previously been reported.
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Affiliation(s)
- Dominik Langgartner
- Laboratory for Molecular Psychosomatics, Clinic for Psychosomatic Medicine and Psychotherapy, Ulm University, Ulm, Germany
| | - Andrea M. Füchsl
- Laboratory for Molecular Psychosomatics, Clinic for Psychosomatic Medicine and Psychotherapy, Ulm University, Ulm, Germany
| | - Lisa M. Kaiser
- Institute for Experimental Cancer Research, Comprehensive Cancer Center Ulm, Ulm University, Ulm, Germany
| | - Tatjana Meier
- Clinic for Psychosomatic Medicine and Psychotherapy, Ulm University, Ulm, Germany
| | - Sandra Foertsch
- Laboratory for Molecular Psychosomatics, Clinic for Psychosomatic Medicine and Psychotherapy, Ulm University, Ulm, Germany
| | - Christian Buske
- Institute for Experimental Cancer Research, Comprehensive Cancer Center Ulm, Ulm University, Ulm, Germany
| | - Stefan O. Reber
- Laboratory for Molecular Psychosomatics, Clinic for Psychosomatic Medicine and Psychotherapy, Ulm University, Ulm, Germany
| | - Medhanie A. Mulaw
- Institute for Experimental Cancer Research, Comprehensive Cancer Center Ulm, Ulm University, Ulm, Germany
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19
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Gentner E, Vegi NM, Mulaw MA, Mandal T, Bamezai S, Claus R, Tasdogan A, Quintanilla-Martinez L, Grunenberg A, Döhner K, Döhner H, Bullinger L, Haferlach T, Buske C, Rawat VPS, Feuring-Buske M. VENTX induces expansion of primitive erythroid cells and contributes to the development of acute myeloid leukemia in mice. Oncotarget 2018; 7:86889-86901. [PMID: 27888632 PMCID: PMC5349961 DOI: 10.18632/oncotarget.13563] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 11/09/2016] [Indexed: 12/02/2022] Open
Abstract
Homeobox genes are key regulators in normal and malignant hematopoiesis. The human Vent-like homeobox gene VENTX, a putative homolog of the Xenopus laevis Xvent-2 gene, was shown to be highly expressed in normal myeloid cells and in patients with acute myeloid leukemia. We now demonstrate that constitutive expression of VENTX suppresses expression of genes responsible for terminal erythroid differentiation in normal CD34+ stem and progenitor cells. Transplantation of bone marrow progenitor cells retrovirally engineered to express VENTX caused massive expansion of primitive erythroid cells and partly acute erythroleukemia in transplanted mice. The leukemogenic potential of VENTX was confirmed in the AML1-ETO transplantation model, as in contrast to AML1-ETO alone co-expression of AML1-ETO and VENTX induced acute myeloid leukemia, partly expressing erythroid markers, in all transplanted mice. VENTX was highly expressed in patients with primary human erythroleukemias and knockdown of VENTX in the erythroleukemic HEL cell line significantly blocked cell growth. In summary, these data indicate that VENTX is able to perturb erythroid differentiation and to contribute to myeloid leukemogenesis when co-expressed with appropriate AML oncogenes and point to its potential significance as a novel therapeutic target in AML.
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Affiliation(s)
- Eva Gentner
- Institute of Experimental Cancer Research, CCC and University Hospital of Ulm, 89081 Ulm, Germany
| | - Naidu M Vegi
- Institute of Experimental Cancer Research, CCC and University Hospital of Ulm, 89081 Ulm, Germany
| | - Medhanie A Mulaw
- Institute of Experimental Cancer Research, CCC and University Hospital of Ulm, 89081 Ulm, Germany
| | - Tamoghna Mandal
- Institute of Experimental Cancer Research, CCC and University Hospital of Ulm, 89081 Ulm, Germany
| | - Shiva Bamezai
- Institute of Experimental Cancer Research, CCC and University Hospital of Ulm, 89081 Ulm, Germany
| | - Rainer Claus
- Department of Internal Medicine I, University Hospital Freiburg, 79106 Freiburg, Germany
| | | | | | - Alexander Grunenberg
- Department of Internal Medicine III, University Hospital Ulm, 89081 Ulm, Germany
| | - Konstanze Döhner
- Department of Internal Medicine III, University Hospital Ulm, 89081 Ulm, Germany
| | - Hartmut Döhner
- Department of Internal Medicine III, University Hospital Ulm, 89081 Ulm, Germany
| | - Lars Bullinger
- Department of Internal Medicine III, University Hospital Ulm, 89081 Ulm, Germany
| | | | - Christian Buske
- Institute of Experimental Cancer Research, CCC and University Hospital of Ulm, 89081 Ulm, Germany
| | - Vijay P S Rawat
- Institute of Experimental Cancer Research, CCC and University Hospital of Ulm, 89081 Ulm, Germany
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20
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Farsam V, Basu A, Gatzka M, Treiber N, Schneider LA, Mulaw MA, Lucas T, Kochanek S, Dummer R, Levesque MP, Wlaschek M, Scharffetter-Kochanek K. Senescent fibroblast-derived Chemerin promotes squamous cell carcinoma migration. Oncotarget 2018; 7:83554-83569. [PMID: 27907906 PMCID: PMC5347788 DOI: 10.18632/oncotarget.13446] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 10/21/2016] [Indexed: 12/17/2022] Open
Abstract
Aging is associated with a rising incidence of cutaneous squamous cell carcinoma (cSCC), an aggressive skin cancer with the potential for local invasion and metastasis. Acquisition of a senescence-associated secretory phenotype (SASP) in dermal fibroblasts has been postulated to promote skin cancer progression in elderly individuals. The underlying molecular mechanisms are largely unexplored. We show that Chemerin, a previously unreported SASP factor released from senescent human dermal fibroblasts, promotes cSCC cell migration, a key feature driving tumor progression. Whereas the Chemerin abundance is downregulated in malignant cSCC cells, increased Chemerin transcripts and protein concentrations are detected in replicative senescent fibroblasts in vitro and in the fibroblast of skin sections from old donors, indicating that a Chemerin gradient is built up in the dermis of elderly. Using Transwell® migration assays, we show that Chemerin enhances the chemotaxis of different cSCC cell lines. Notably, the Chemerin receptor CCRL2 is remarkably upregulated in cSCC cell lines and human patient biopsies. Silencing Chemerin in senescent fibroblasts or the CCRL2 and GPR1 receptors in the SCL-1 cSCC cell line abrogates the Chemerin-mediated chemotaxis. Chemerin triggers the MAPK cascade via JNK and ERK1 activation, whereby the inhibition impairs the SASP- or Chemerin-mediated cSCC cell migration. Taken together, we uncover a key role for Chemerin, as a major factor in the secretome of senescent fibroblasts, promoting cSCC cell migration and possibly progression, relaying its signals through CCRL2 and GPR1 receptors with subsequent MAPK activation. These findings might have implications for targeted therapeutic interventions in elderly patients.
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Affiliation(s)
- Vida Farsam
- Department of Dermatology and Allergic Diseases, University of Ulm, Germany
| | - Abhijit Basu
- Department of Dermatology and Allergic Diseases, University of Ulm, Germany
| | - Martina Gatzka
- Department of Dermatology and Allergic Diseases, University of Ulm, Germany
| | - Nicolai Treiber
- Department of Dermatology and Allergic Diseases, University of Ulm, Germany
| | - Lars A Schneider
- Department of Dermatology and Allergic Diseases, University of Ulm, Germany
| | - Medhanie A Mulaw
- Institute of Experimental Cancer Research, University of Ulm, Germany
| | - Tanja Lucas
- Department of Gene Therapy, University of Ulm, Germany
| | | | - Reinhard Dummer
- Department of Dermatology, University Hospital Zurich, Switzerland
| | | | - Meinhard Wlaschek
- Department of Dermatology and Allergic Diseases, University of Ulm, Germany
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21
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Khalaji S, Zondler L, KleinJan F, Nolte U, Mulaw MA, Danzer KM, Weishaupt JH, Gottschalk KE. Age Increases Monocyte Adhesion on Collagen. Sci Rep 2017; 7:46532. [PMID: 28513618 PMCID: PMC5434452 DOI: 10.1038/srep46532] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 03/16/2017] [Indexed: 01/17/2023] Open
Abstract
Adhesion of monocytes to micro-injuries on arterial walls is an important early step in the occurrence and development of degenerative atherosclerotic lesions. At these injuries, collagen is exposed to the blood stream. We are interested whether age influences monocyte adhesion to collagen under flow, and hence influences the susceptibility to arteriosclerotic lesions. Therefore, we studied adhesion and rolling of human peripheral blood monocytes from old and young individuals on collagen type I coated surface under shear flow. We find that firm adhesion of monocytes to collagen type I is elevated in old individuals. Pre-stimulation by lipopolysaccharide increases the firm adhesion of monocytes homogeneously in older individuals, but heterogeneously in young individuals. Blocking integrin αx showed that adhesion of monocytes to collagen type I is specific to the main collagen binding integrin αxβ2. Surprisingly, we find no significant age-dependent difference in gene expression of integrin αx or integrin β2. However, if all integrins are activated from the outside, no differences exist between the age groups. Altered integrin activation therefore causes the increased adhesion. Our results show that the basal increase in integrin activation in monocytes from old individuals increases monocyte adhesion to collagen and therefore the risk for arteriosclerotic plaques.
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Affiliation(s)
- Samira Khalaji
- Institute for Experimental Physics, Ulm University, Ulm, Germany
| | - Lisa Zondler
- Department of Neurology, Ulm University, Ulm, Germany
| | - Fenneke KleinJan
- Institute for Experimental Physics, Ulm University, Ulm, Germany
| | - Ulla Nolte
- Institute for Experimental Physics, Ulm University, Ulm, Germany
| | - Medhanie A Mulaw
- Institute for Experimental Cancer Research, Ulm University, Ulm, Germany
| | | | | | - Kay-E Gottschalk
- Institute for Experimental Physics, Ulm University, Ulm, Germany
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22
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Riehl LM, Schulte JH, Mulaw MA, Dahlhaus M, Fischer M, Schramm A, Eggert A, Debatin KM, Beltinger C. The mitochondrial genetic landscape in neuroblastoma from tumor initiation to relapse. Oncotarget 2016; 7:6620-5. [PMID: 26735174 PMCID: PMC4872737 DOI: 10.18632/oncotarget.6776] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 11/25/2015] [Indexed: 11/25/2022] Open
Abstract
Little is known about changes within the mitochondrial (mt) genome during tumor progression in general and during initiation and progression of neuroblastoma (NB) in particular. Whole exome sequencing of corresponding healthy tissue, primary tumor and relapsed tumor from 16 patients with NB revealed that most NB harbor tumor-specific mitochondrial variants. In relapsed tumors, the status of mt variants changed in parallel to the status of nuclear variants, as shown by increased number and spatio-temporal differences of tumor-specific variants, and by a concomitant decrease of germline variants. As mt variants are present in most NB patients, change during relapse and have a higher copy number compared to nuclear variants, they represent a promising new source of biomarkers for monitoring and phylogenetic analysis of NB.
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Affiliation(s)
- Lara M Riehl
- Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, Ulm, Germany
| | - Johannes H Schulte
- Pediatric Oncology and Hematology, Charité University Medicine, Berlin, Germany.,German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Medhanie A Mulaw
- Institute for Experimental Cancer Research, University Medical Center Ulm, Ulm, Germany.,Core Facility Genomics, Faculty of Medicine, Ulm University, Ulm, Germany
| | - Meike Dahlhaus
- Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, Ulm, Germany
| | - Matthias Fischer
- Department of Pediatric Oncology and Hematology, University Children's Hospital Cologne, Medical Faculty, University of Cologne, Cologne, Germany.,Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
| | - Alexander Schramm
- Department of Pediatric Oncology and Hematology, University Children's Hospital Essen, Essen, Germany
| | - Angelika Eggert
- Pediatric Oncology and Hematology, Charité University Medicine, Berlin, Germany
| | - Klaus-Michael Debatin
- Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, Ulm, Germany
| | - Christian Beltinger
- Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, Ulm, Germany
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23
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Vegi NM, Klappacher J, Oswald F, Mulaw MA, Mandoli A, Thiel VN, Bamezai S, Feder K, Martens JHA, Rawat VPS, Mandal T, Quintanilla-Martinez L, Spiekermann K, Hiddemann W, Döhner K, Döhner H, Stunnenberg HG, Feuring-Buske M, Buske C. MEIS2 Is an Oncogenic Partner in AML1-ETO-Positive AML. Cell Rep 2016; 16:498-507. [PMID: 27346355 DOI: 10.1016/j.celrep.2016.05.094] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 04/20/2016] [Accepted: 05/27/2016] [Indexed: 11/28/2022] Open
Abstract
Homeobox genes are known to be key factors in leukemogenesis. Although the TALE family homeodomain factor Meis1 has been linked to malignancy, a role for MEIS2 is less clear. Here, we demonstrate that MEIS2 is expressed at high levels in patients with AML1-ETO-positive acute myeloid leukemia and that growth of AML1-ETO-positive leukemia depends on MEIS2 expression. In mice, MEIS2 collaborates with AML1-ETO to induce acute myeloid leukemia. MEIS2 binds strongly to the Runt domain of AML1-ETO, indicating a direct interaction between these transcription factors. High expression of MEIS2 impairs repressive DNA binding of AML1-ETO, inducing increased expression of genes such as the druggable proto-oncogene YES1. Collectively, these data describe a pivotal role for MEIS2 in AML1-ETO-induced leukemia.
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Affiliation(s)
- Naidu M Vegi
- Institute of Experimental Cancer Research, CCC and University Hospital of Ulm, 89081 Ulm, Germany
| | - Josef Klappacher
- Institute of Experimental Cancer Research, CCC and University Hospital of Ulm, 89081 Ulm, Germany
| | - Franz Oswald
- Department of Internal Medicine I, Center for Internal Medicine, University Medical Center Ulm, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Medhanie A Mulaw
- Institute of Experimental Cancer Research, CCC and University Hospital of Ulm, 89081 Ulm, Germany
| | - Amit Mandoli
- Department of Molecular Biology, Faculty of Science, Nijmegen Centre for Molecular Life Sciences, Radboud University, 6500HB Nijmegen, the Netherlands
| | - Verena N Thiel
- Department of Internal Medicine I, Center for Internal Medicine, University Medical Center Ulm, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Shiva Bamezai
- Institute of Experimental Cancer Research, CCC and University Hospital of Ulm, 89081 Ulm, Germany
| | - Kristin Feder
- Institute of Experimental Cancer Research, CCC and University Hospital of Ulm, 89081 Ulm, Germany
| | - Joost H A Martens
- Department of Molecular Biology, Faculty of Science, Nijmegen Centre for Molecular Life Sciences, Radboud University, 6500HB Nijmegen, the Netherlands
| | - Vijay P S Rawat
- Institute of Experimental Cancer Research, CCC and University Hospital of Ulm, 89081 Ulm, Germany
| | - Tamoghna Mandal
- Institute of Experimental Cancer Research, CCC and University Hospital of Ulm, 89081 Ulm, Germany
| | - Leticia Quintanilla-Martinez
- Institute of Pathology and Neuropathology, Eberhard Karls University of Tübingen and Comprehensive Cancer Center, University Hospital Tübingen, Liebermeisterstrasse 8, 72076 Tübingen, Germany
| | - Karsten Spiekermann
- Department of Internal Medicine III, University Hospital Grosshadern, Ludwig-Maximilians-University (LMU), 81377 Munich, Germany
| | - Wolfgang Hiddemann
- Department of Internal Medicine III, University Hospital Grosshadern, Ludwig-Maximilians-University (LMU), 81377 Munich, Germany
| | - Konstanze Döhner
- Department of Internal Medicine III, University Hospital Ulm, 89081 Ulm, Germany
| | - Hartmut Döhner
- Department of Internal Medicine III, University Hospital Ulm, 89081 Ulm, Germany
| | - Hendrik G Stunnenberg
- Department of Molecular Biology, Faculty of Science, Nijmegen Centre for Molecular Life Sciences, Radboud University, 6500HB Nijmegen, the Netherlands
| | | | - Christian Buske
- Institute of Experimental Cancer Research, CCC and University Hospital of Ulm, 89081 Ulm, Germany; Core Facility Genomics, Medical Faculty Ulm, Ulm University, 89081 Ulm, Germany.
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24
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Herold T, Mulaw MA, Jurinovic V, Seiler T, Metzeler KH, Dufour A, Schneider S, Kakadia PM, Spiekermann K, Mansmann U, Hiddemann W, Buske C, Dreyling M, Bohlander SK. High expression of MZB1 predicts adverse prognosis in chronic lymphocytic leukemia, follicular lymphoma and diffuse large B-cell lymphoma and is associated with a unique gene expression signature. Leuk Lymphoma 2012. [PMID: 23189934 DOI: 10.3109/10428194.2012.753445] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract We recently identified the marginal zone B and B1 cell-specific protein (MZB1) as part of a gene expression signature associated with outcomes in chronic lymphocytic leukemia (CLL). MZB1 is important for B cell function as a key regulator of antibody secretion, calcium homeostasis and adhesion. Therefore, we analyzed the role of MZB1 expression levels in 139 patients with CLL using quantitative real-time polymerase chain reaction (qRT-PCR) and microarray data sets in CLL, follicular lymphoma (FL), diffuse large B-cell lymphoma (DLBCL), multiple myeloma (MM) and acute myeloid leukemia (AML). High MZB1 expression was associated with inferior survival in CLL (hazard ratio [HR]: 1.63 [confidence interval (CI): 1.14-2.33], p = 0.007), FL (221286_s_at HR: 1.16 [CI: 0.98-1.37], p = 0.086; 223565_at: HR: 1.3 [CI: 1.1-1.61], p = 0.015) and DLBCL (221286_s_at: HR: 1.17 [CI: 1.06-1.3], p = 0.003; 223565_at: HR: 1.21 [CI: 1.08-1.35], p = 0.001). In DLBCL MZB1 expression was an additive prognostic marker in a multivariate model including activated B-cell like (ABC) versus germinal center (GCB) subtype. Additionally, MZB1 expression correlated with a unique gene expression pattern. This study is the first to show that the expression level of a single gene has prognostic significance in different lymphoma subtypes. Due to its biological function, MZB1 may play a central role in B cell neoplasms and is a potential target for future therapeutic interventions.
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Affiliation(s)
- Tobias Herold
- Department of Internal Medicine III, University Hospital Grosshadern, Ludwig-Maximilians-University (LMU), Munich, Germany.
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25
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Mulaw MA, Krause A, Deshpande AJ, Krause LF, Rouhi A, La Starza R, Borkhardt A, Buske C, Mecucci C, Ludwig WD, Lottaz C, Bohlander SK. Erratum: CALM/AF10-positive leukemias show upregulation of genes involved in chromatin assembly and DNA repair processes and of genes adjacent to the breakpoint at 10p12. Leukemia 2012. [DOI: 10.1038/leu.2012.171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bararia D, Trivedi AK, Zada AAP, Greif PA, Mulaw MA, Christopeit M, Hiddemann W, Bohlander SK, Behre G. Proteomic identification of the MYST domain histone acetyltransferase TIP60 (HTATIP) as a co-activator of the myeloid transcription factor C/EBPalpha. Leukemia 2008; 22:800-7. [PMID: 18239623 DOI: 10.1038/sj.leu.2405101] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The transcription factor C/EBPalpha (CEBPA) is a key player in granulopoiesis and leukemogenesis. We have previously reported the interaction of C/EBPalpha with other proteins (utilizing mass spectrometry) in transcriptional regulation. In the present study, we characterized the association of the MYST domain histone acetyltransferase Tat-interactive protein (TIP) 60 (HTATIP) with C/EBPalpha. We show in pull-down and co-precipitation experiments that C/EBPalpha and HTATIP interact. A chromatin immunoprecipitation (ChIP) and a confirmatory Re-ChIP assay revealed in vivo occupancy of the C/EBPalpha and GCSF-R promoter by HTATIP. Reporter gene assays showed that HTATIP is a co-activator of C/EBPalpha. The co-activator function of HTATIP is dependent on its intact histone acetyltransferase (HAT) domain and on the C/EBPalpha DNA-binding domain. The resulting balance between histone acetylation and deacetylation at the C/EBPalpha promoter might represent an important mechanism of C/EBPalpha action. We observed a lower expression of HTATIP mRNA in undifferentiated U937 cells compared to retinoic acid-induced differentiated U937 cells, and correlated expression of CEBPA and HTATIP mRNA levels were observed in leukemia samples. These findings point to a functional synergism between C/EBPalpha and HTATIP in myeloid differentiation and suggest that HTATIP might be an important player in leukemogenesis.
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Affiliation(s)
- D Bararia
- Department of Medicine III, University of Munich and Clinical Cooperative Group, HelmholtzZentrum German Research Center for Environmental Health, Munich, Germany
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