1
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Pfeffer TJ, Mueller JH, Haebel L, Erschow S, Yalman KC, Talbot SR, Koenig T, Berliner D, Zwadlo C, Scherr M, Hilfiker‐Kleiner D, Bauersachs J, Ricke‐Hoch M. Cabergoline treatment promotes myocardial recovery in peripartum cardiomyopathy. ESC Heart Fail 2022; 10:465-477. [PMID: 36300679 PMCID: PMC9871652 DOI: 10.1002/ehf2.14210] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 09/16/2022] [Accepted: 10/02/2022] [Indexed: 01/27/2023] Open
Abstract
AIMS Peripartum cardiomyopathy (PPCM) is a rare heart disease, occurring in previously heart-healthy women during the last month of pregnancy or the first months after delivery due to left ventricular (LV) systolic dysfunction. A common pathomechanistic pathway of PPCM includes increased oxidative stress and the subsequent generation of a cleaved prolactin fragment (16 kDa PRL), which promotes the onset of heart failure (HF) in a microRNA (miR)-146a-dependent manner. Inhibition of prolactin secretion with the dopamine D2 receptor (D2R) agonist bromocriptine combined with standard HF therapy supports cardiac recovery. This study examined whether treatment with the more selective D2R agonist cabergoline prevents HF development in an experimental PPCM mouse model and might be used as an alternative treatment regime for PPCM. METHODS AND RESULTS Postpartum (PP) female PPCM-prone mice with a cardiomyocyte restricted STAT3-deficiency (αMHC-Cretg/+ ; Stat3fl/fl ; CKO) were treated over two consecutive nursing periods with cabergoline (CKO Cab, 0.5 mg/kg/day) and were compared with bromocriptine treated CKO (CKO Br) and postpartum-matched WT and CKO mice. Cabergoline treatment in CKO PP mice preserved cardiac function [fractional shortening (FS): CKO Cab: 34.5 ± 9.4% vs. CKO: 22.1 ± 9%, P < 0.05] and prevented the development of cardiac hypertrophy, fibrosis, and inflammation as effective as bromocriptine therapy (FS: CKO Br: 33.4 ± 5.6%). The myocardial up-regulation of the PPCM biomarkers plasminogen inhibitor activator 1 (PAI-1) and miR-146a were prevented by both cabergoline and bromocriptine therapy. A small cohort of three PPCM patients from the German PPCM Registry was treated with cabergoline (1 mg per week for 2 weeks, followed by 0.5 mg per week for another 6 weeks) due to a temporary unavailability of bromocriptine. All PPCM patients initially presented with a severely reduced LV ejection fraction (LVEF: 26 ± 2%). However, at 6 months of follow-up, LV function (LVEF: 56 ± 2%) fully recovered in all three PPCM patients, and no adverse events were detected. CONCLUSIONS In the experimental PPCM mouse model, the selective D2R agonist cabergoline prevents the onset of postpartum HF similar to bromocriptine. In PPCM patients, cabergoline treatment was safe and effective as all patients fully recovered. Cabergoline might serve as a promising alternative to bromocriptine. However, these findings are based on experimental data and a small case series and thus have to be interpreted with caution and should be validated in a larger clinical trial.
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Affiliation(s)
- Tobias J. Pfeffer
- Department of Cardiology and AngiologyHannover Medical SchoolHannoverGermany
| | - Julia H. Mueller
- Department of Cardiology and AngiologyHannover Medical SchoolHannoverGermany
| | - Lea Haebel
- Department of Cardiology and AngiologyHannover Medical SchoolHannoverGermany
| | - Sergej Erschow
- Department of Cardiology and AngiologyHannover Medical SchoolHannoverGermany
| | - Kuebra C. Yalman
- Department of Cardiology and AngiologyHannover Medical SchoolHannoverGermany
| | - Steven R. Talbot
- Institute for Laboratory Animal Science and Central Animal FacilityHannover Medical SchoolHannoverGermany
| | - Tobias Koenig
- Department of Cardiology and AngiologyHannover Medical SchoolHannoverGermany
| | - Dominik Berliner
- Department of Cardiology and AngiologyHannover Medical SchoolHannoverGermany
| | - Carolin Zwadlo
- Department of Cardiology and AngiologyHannover Medical SchoolHannoverGermany
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell TransplantationHannover Medical SchoolHannoverGermany
| | - Denise Hilfiker‐Kleiner
- Department of Cardiology and AngiologyHannover Medical SchoolHannoverGermany,Department of Cardiovascular Complications of Oncologic Therapies, Medical FacultyPhilipps University MarburgMarburgGermany
| | - Johann Bauersachs
- Department of Cardiology and AngiologyHannover Medical SchoolHannoverGermany
| | - Melanie Ricke‐Hoch
- Department of Cardiology and AngiologyHannover Medical SchoolHannoverGermany
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2
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Yang M, Pan Z, Huang K, Büsche G, Liu H, Göhring G, Rumpel R, Dittrich-Breiholz O, Talbot S, Scherr M, Chaturvedi A, Eder M, Skokowa J, Zhou J, Welte K, von Neuhoff N, Liu L, Ganser A, Li Z. A unique role of p53 haploinsufficiency or loss in the development of acute myeloid leukemia with FLT3-ITD mutation. Leukemia 2022; 36:675-686. [PMID: 34732858 PMCID: PMC8885416 DOI: 10.1038/s41375-021-01452-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 01/19/2021] [Revised: 08/29/2021] [Accepted: 10/08/2021] [Indexed: 12/17/2022]
Abstract
With an incidence of ~50%, the absence or reduced protein level of p53 is much more common than TP53 mutations in acute myeloid leukemia (AML). AML with FLT3-ITD (internal tandem duplication) mutations has an unfavorable prognosis and is highly associated with wt-p53 dysfunction. While TP53 mutation in the presence of FLT3-ITD does not induce AML in mice, it is not clear whether p53 haploinsufficiency or loss cooperates with FLT3-ITD in the induction of AML. Here, we generated FLT3-ITD knock-in; p53 knockout (heterozygous and homozygous) double-transgenic mice and found that both alterations strongly cooperated in the induction of cytogenetically normal AML without increasing the self-renewal potential. At the molecular level, we found the strong upregulation of Htra3 and the downregulation of Lin28a, leading to enhanced proliferation and the inhibition of apoptosis and differentiation. The co-occurrence of Htra3 overexpression and Lin28a knockdown, in the presence of FLT3-ITD, induced AML with similar morphology as leukemic cells from double-transgenic mice. These leukemic cells were highly sensitive to the proteasome inhibitor carfilzomib. Carfilzomib strongly enhanced the activity of targeting AXL (upstream of FLT3) against murine and human leukemic cells. Our results unravel a unique role of p53 haploinsufficiency or loss in the development of FLT3-ITD + AML.
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Affiliation(s)
- Min Yang
- grid.10423.340000 0000 9529 9877Department of Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Zengkai Pan
- grid.10423.340000 0000 9529 9877Department of Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany ,grid.16821.3c0000 0004 0368 8293Present Address: National Research Center for Translational Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kezhi Huang
- grid.10423.340000 0000 9529 9877Department of Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany ,grid.12981.330000 0001 2360 039XPresent Address: Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, and Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Guntram Büsche
- grid.10423.340000 0000 9529 9877Institute of Pathology, Hannover Medical School, Hannover, Germany
| | - Hongyun Liu
- grid.10423.340000 0000 9529 9877Department of Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Gudrun Göhring
- grid.10423.340000 0000 9529 9877Department of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Regina Rumpel
- grid.10423.340000 0000 9529 9877Institute for Laboratory Animal Science and Central Animal Facility, Hannover Medical School, Hannover, Germany
| | - Oliver Dittrich-Breiholz
- grid.10423.340000 0000 9529 9877Research Core Unit Genomics, Hannover Medical School, Hannover, Germany
| | - Steven Talbot
- grid.10423.340000 0000 9529 9877Institute for Laboratory Animal Science and Central Animal Facility, Hannover Medical School, Hannover, Germany
| | - Michaela Scherr
- grid.10423.340000 0000 9529 9877Department of Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Anuhar Chaturvedi
- grid.10423.340000 0000 9529 9877Department of Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Matthias Eder
- grid.10423.340000 0000 9529 9877Department of Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Julia Skokowa
- grid.10392.390000 0001 2190 1447Department of Hematology, Oncology, Clinical Immunology, University of Tübingen, Tübingen, Germany
| | - Jianfeng Zhou
- grid.33199.310000 0004 0368 7223Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Karl Welte
- grid.488549.cUniversity Children’s Hospital, Department of General Pediatrics and Pediatric Hematology and Oncology, Tübingen, Germany
| | - Nils von Neuhoff
- grid.5718.b0000 0001 2187 5445AML Diagnostic Laboratory, Department of Pediatric Hematology-Oncology, University of Duisburg-Essen, Essen, Germany
| | - Ligen Liu
- grid.16821.3c0000 0004 0368 8293Department of Hematology, Shanghai Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Arnold Ganser
- grid.10423.340000 0000 9529 9877Department of Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Zhixiong Li
- Department of Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany.
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3
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Kloos A, Mintzas K, Winckler L, Gabdoulline R, Alwie Y, Jyotsana N, Kattre N, Schottmann R, Scherr M, Gupta C, Adams FF, Schwarzer A, Heckl D, Schambach A, Imren S, Humphries RK, Ganser A, Thol F, Heuser M. Correction: Effective drug treatment identified by in vivo screening in a transplantable patient-derived xenograft model of chronic myelomonocytic leukemia. Leukemia 2021; 35:3629. [PMID: 34728793 PMCID: PMC9119204 DOI: 10.1038/s41375-021-01459-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Arnold Kloos
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Konstantinos Mintzas
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Lina Winckler
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Razif Gabdoulline
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Yasmine Alwie
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Nidhi Jyotsana
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, 37235, USA
| | - Nadine Kattre
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Renate Schottmann
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Charu Gupta
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Felix F Adams
- Institute of Experimental Hematology, Hannover Medical School, Hannover, Germany
| | - Adrian Schwarzer
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany.,Institute of Experimental Hematology, Hannover Medical School, Hannover, Germany
| | - Dirk Heckl
- Pediatric Hematology and Oncology, Hannover Medical School, Hannover, Germany.,Department of Pediatric Hematology and Oncology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Axel Schambach
- Institute of Experimental Hematology, Hannover Medical School, Hannover, Germany.,Division of Hematology/Oncology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Suzan Imren
- Department of Pediatrics, University of Washington, Seattle, WA, USA
| | - R Keith Humphries
- Terry Fox Laboratory, British Columbia Cancer Agency, Vancouver, BC, Canada.,Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Arnold Ganser
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Felicitas Thol
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Michael Heuser
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany.
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4
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Ricke-Hoch M, Stelling E, Lasswitz L, Gunesch AP, Kasten M, Zapatero-Belinchón FJ, Brogden G, Gerold G, Pietschmann T, Montiel V, Balligand JL, Facciotti F, Hirsch E, Gausepohl T, Elbahesh H, Rimmelzwaan GF, Höfer A, Kühnel MP, Jonigk D, Eigendorf J, Tegtbur U, Mink L, Scherr M, Illig T, Schambach A, Pfeffer TJ, Hilfiker A, Haverich A, Hilfiker-Kleiner D. Impaired immune response mediated by prostaglandin E2 promotes severe COVID-19 disease. PLoS One 2021; 16:e0255335. [PMID: 34347801 PMCID: PMC8336874 DOI: 10.1371/journal.pone.0255335] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [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: 03/11/2021] [Accepted: 07/14/2021] [Indexed: 02/07/2023] Open
Abstract
The SARS-CoV-2 coronavirus has led to a pandemic with millions of people affected. The present study finds that risk-factors for severe COVID-19 disease courses, i.e. male sex, older age and sedentary life style are associated with higher prostaglandin E2 (PGE2) serum levels in blood samples from unaffected subjects. In COVID-19 patients, PGE2 blood levels are markedly elevated and correlate positively with disease severity. SARS-CoV-2 induces PGE2 generation and secretion in infected lung epithelial cells by upregulating cyclo-oxygenase (COX)-2 and reducing the PG-degrading enzyme 15-hydroxyprostaglandin-dehydrogenase. Also living human precision cut lung slices (PCLS) infected with SARS-CoV-2 display upregulated COX-2. Regular exercise in aged individuals lowers PGE2 serum levels, which leads to increased Paired-Box-Protein-Pax-5 (PAX5) expression, a master regulator of B-cell survival, proliferation and differentiation also towards long lived memory B-cells, in human pre-B-cell lines. Moreover, PGE2 levels in serum of COVID-19 patients lowers the expression of PAX5 in human pre-B-cell lines. The PGE2 inhibitor Taxifolin reduces SARS-CoV-2-induced PGE2 production. In conclusion, SARS-CoV-2, male sex, old age, and sedentary life style increase PGE2 levels, which may reduce the early anti-viral defense as well as the development of immunity promoting severe disease courses and multiple infections. Regular exercise and Taxifolin treatment may reduce these risks and prevent severe disease courses.
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Affiliation(s)
- Melanie Ricke-Hoch
- Department of Cardiology and Angiology, Hannover Medical School, Hanover, Germany
| | - Elisabeth Stelling
- Department of Cardiology and Angiology, Hannover Medical School, Hanover, Germany
| | - Lisa Lasswitz
- Institute of Experimental Virology, TWINCORE, Center for Experimental and Clinical Infection Research Hannover, Hanover, Germany
| | - Antonia P Gunesch
- Institute of Experimental Virology, TWINCORE, Center for Experimental and Clinical Infection Research Hannover, Hanover, Germany
- German Center for Infection Research, Hanover-Braunschweig Site, Braunschweig, Germany
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hanover, Germany
| | - Martina Kasten
- Department of Cardiology and Angiology, Hannover Medical School, Hanover, Germany
| | - Francisco J Zapatero-Belinchón
- Institute of Experimental Virology, TWINCORE, Center for Experimental and Clinical Infection Research Hannover, Hanover, Germany
- Department of Clinical Microbiology, Virology & Wallenberg Centre for Molecular Medicine (WCMM), Umeå University, Umeå, Sweden
| | - Graham Brogden
- Institute of Experimental Virology, TWINCORE, Center for Experimental and Clinical Infection Research Hannover, Hanover, Germany
| | - Gisa Gerold
- Institute of Experimental Virology, TWINCORE, Center for Experimental and Clinical Infection Research Hannover, Hanover, Germany
- Department of Clinical Microbiology, Virology & Wallenberg Centre for Molecular Medicine (WCMM), Umeå University, Umeå, Sweden
- Department of Biochemistry, University of Veterinary Medicine Hannover, Hanover Germany
| | - Thomas Pietschmann
- Institute of Experimental Virology, TWINCORE, Center for Experimental and Clinical Infection Research Hannover, Hanover, Germany
- German Center for Infection Research, Hanover-Braunschweig Site, Braunschweig, Germany
| | - Virginie Montiel
- Pole of Pharmacology and Therapeutics, Institut de Recherche Expérimentale et Clinique, and Cliniques Universitaires Saint-Luc, Université catholique de Louvain (UCLouvain), Brussels, Belgium
| | - Jean-Luc Balligand
- Pole of Pharmacology and Therapeutics, Institut de Recherche Expérimentale et Clinique, and Cliniques Universitaires Saint-Luc, Université catholique de Louvain (UCLouvain), Brussels, Belgium
| | - Federica Facciotti
- Department of Experimental Oncology, European Institute of Oncology IRCCS, Milan, Italy
| | - Emilio Hirsch
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Thomas Gausepohl
- Department of Cardiology and Angiology, Hannover Medical School, Hanover, Germany
| | - Husni Elbahesh
- Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine in Hannover (TiHo), Hannover, Germany
| | - Guus F Rimmelzwaan
- Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine in Hannover (TiHo), Hannover, Germany
| | - Anne Höfer
- Biomedical Research in Endstage and Obstructive Lung Disease (BREATH), German Center for Lung Research, Hanover, Germany
- Institute for Pathology, Hannover Medical School, Hanover, Germany
| | - Mark P Kühnel
- Biomedical Research in Endstage and Obstructive Lung Disease (BREATH), German Center for Lung Research, Hanover, Germany
- Institute for Pathology, Hannover Medical School, Hanover, Germany
| | - Danny Jonigk
- Biomedical Research in Endstage and Obstructive Lung Disease (BREATH), German Center for Lung Research, Hanover, Germany
- Institute for Pathology, Hannover Medical School, Hanover, Germany
| | - Julian Eigendorf
- Institute of Sports Medicine, Hannover Medical School, Hanover, Germany
| | - Uwe Tegtbur
- Institute of Sports Medicine, Hannover Medical School, Hanover, Germany
| | - Lena Mink
- Institute of Sports Medicine, Hannover Medical School, Hanover, Germany
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hanover, Germany
| | - Thomas Illig
- Hannover Unified Biobank (HUB), Hannover Medical School, Hanover, Germany
| | - Axel Schambach
- Institute of Experimental Hematology, Hannover Medical School, Hanover, Germany
- Division of Hematology and Oncology, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States of America
| | - Tobias J Pfeffer
- Department of Cardiology and Angiology, Hannover Medical School, Hanover, Germany
| | - Andres Hilfiker
- Department of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hanover, Germany
| | - Axel Haverich
- Department of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hanover, Germany
| | - Denise Hilfiker-Kleiner
- Department of Cardiology and Angiology, Hannover Medical School, Hanover, Germany
- Department of Cardiovascular Complications of Oncologic Therapies, Medical Faculty of the Philipps University Marburg, Marburg, Germany
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5
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Feyen E, Ricke-Hoch M, Van Fraeyenhove J, Vermeulen Z, Scherr M, Dugaucquier L, Viereck J, Bruyns T, Thum T, Segers VFM, Hilfiker-Kleiner D, De Keulenaer GW. ERBB4 and Multiple MicroRNAs That Target ERBB4 Participate in Pregnancy-Related Cardiomyopathy. Circ Heart Fail 2021; 14:e006898. [PMID: 34247489 DOI: 10.1161/circheartfailure.120.006898] [Citation(s) in RCA: 9] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Peripartum cardiomyopathy (PPCM) is a life-threatening disease in women without previously known cardiovascular disease. It is characterized by a sudden onset of heart failure before or after delivery. Previous studies revealed that the generation of a 16-kDa PRL (prolactin) metabolite, the subsequent upregulation of miR-146a, and the downregulation of the target gene Erbb4 is a common driving factor of PPCM. METHODS miRNA profiling was performed in plasma of PPCM patients (n=33) and postpartum-matched healthy CTRLs (controls; n=36). Elevated miRNAs in PPCM plasma, potentially targeting ERBB4 (erythroblastic leukemia viral oncogene homolog 4), were overexpressed in cardiomyocytes using lentiviral vectors. Next, cardiac function, cardiac morphology, and PPCM phenotype were investigated after recurrent pregnancies of HZ (heterozygous) cardiomyocyte-specific Erbb4 mice (Erbb4F/+ αMHC-Cre+, n=9) with their age-matched nonpregnant CTRLs (n=9-10). RESULTS Here, we identify 9 additional highly conserved miRNAs (miR-199a-5p and miR-199a-3p, miR-145a-5p, miR-130a-3p, miR-135a-5p, miR-221-3p, miR-222-3p, miR-23a-3p, and miR19b-3p) that target tyrosine kinase receptor ERBB4 and are over 4-fold upregulated in plasma of PPCM patients at the time of diagnosis. We confirmed that miR-146a, miR-199a-5p, miR-221-3p, miR-222-3p, miR-23a-3p, miR-130a-5p, and miR-135-3p overexpression decreases ERBB4 expression in cardiomyocytes (-29% to -50%; P<0.05). In addition, we demonstrate that genetic cardiomyocyte-specific downregulation of Erbb4 during pregnancy suffices to induce a variant of PPCM in mice, characterized by left ventricular dilatation (postpartum second delivery: left ventricular internal diameter in diastole, +19±7% versus HZ-CTRL; P<0.05), increased atrial natriuretic peptide (ANP) levels (4-fold increase versus HZ-CTRL mice, P<0.001), decreased VEGF (vascular endothelial growth factor) and VE-cadherin levels (-33±17%, P=0.07; -27±20%, P<0.05 versus HZ-CTRL), and histologically enlarged cardiomyocytes (+20±21%, versus HZ-CTRL, P<0.05) but without signs of myocardial apoptosis and inflammation. CONCLUSIONS ERBB4 is essential to protect the maternal heart from peripartum stress. Downregulation of ERBB4 in cardiomyocytes induced by multiple miRNAs in the peripartum period may be crucial in PPCM pathophysiology. Registration: URL: https://www.clinicaltrials.gov; Unique identifier: NCT00998556.
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Affiliation(s)
- Eline Feyen
- Department of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Physiopharmacology, University of Antwerp, Wilrijk, Belgium (E.F., J.V.f., Z.V., L.D., T.B., V.F.M.S., G.W.D.K.)
| | - Melanie Ricke-Hoch
- Department of Cardiology and Angiology (M.R.-H., D.H.-K.), Hannover Medical School, Germany
| | - Jens Van Fraeyenhove
- Department of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Physiopharmacology, University of Antwerp, Wilrijk, Belgium (E.F., J.V.f., Z.V., L.D., T.B., V.F.M.S., G.W.D.K.)
| | - Zarha Vermeulen
- Department of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Physiopharmacology, University of Antwerp, Wilrijk, Belgium (E.F., J.V.f., Z.V., L.D., T.B., V.F.M.S., G.W.D.K.)
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation (M.S.), Hannover Medical School, Germany
| | - Lindsey Dugaucquier
- Department of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Physiopharmacology, University of Antwerp, Wilrijk, Belgium (E.F., J.V.f., Z.V., L.D., T.B., V.F.M.S., G.W.D.K.)
| | - Janika Viereck
- Institute of Molecular and Translational Therapeutic Strategies (J.V., T.T.), Hannover Medical School, Germany
| | - Tine Bruyns
- Department of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Physiopharmacology, University of Antwerp, Wilrijk, Belgium (E.F., J.V.f., Z.V., L.D., T.B., V.F.M.S., G.W.D.K.)
| | - Thomas Thum
- Institute of Molecular and Translational Therapeutic Strategies (J.V., T.T.), Hannover Medical School, Germany
| | - Vincent F M Segers
- Department of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Physiopharmacology, University of Antwerp, Wilrijk, Belgium (E.F., J.V.f., Z.V., L.D., T.B., V.F.M.S., G.W.D.K.).,Department of Cardiology, University Hospital Antwerp, Edegem, Belgium (V.F.M.S.). Department of Cardiology, ZNA Hospital, Antwerp, Belgium (G.W.D.K.)
| | | | - Gilles W De Keulenaer
- Department of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Physiopharmacology, University of Antwerp, Wilrijk, Belgium (E.F., J.V.f., Z.V., L.D., T.B., V.F.M.S., G.W.D.K.)
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6
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Pfeffer TJ, List M, Müller JH, Scherr M, Bauersachs J, Hilfiker-Kleiner D, Ricke-Hoch M. Perhexiline treatment improves toxic effects of β-adrenergic receptor stimulation in experimental peripartum cardiomyopathy. ESC Heart Fail 2021; 8:3375-3381. [PMID: 34002539 PMCID: PMC8318439 DOI: 10.1002/ehf2.13412] [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: 02/05/2021] [Revised: 04/21/2021] [Accepted: 04/27/2021] [Indexed: 01/13/2023] Open
Abstract
Aims Peripartum cardiomyopathy (PPCM) is a pregnancy‐associated cardiomyopathy that occurs in previously heart‐healthy women towards the end of pregnancy or in the first months after delivery and is characterized by heart failure due to systolic dysfunction. The clinical course of PPCM differs between mild symptoms and severe forms with acute heart failure complicated by cardiogenic shock (CS). Treatment of CS complicating PPCM is challenging, as β‐adrenergic receptor (β‐AR) stimulation seems to be associated with progression of heart failure and adverse outcome. This experimental study aims to examine whether postpartum treatment with the glucose uptake‐promoting drug perhexiline alone or as co‐treatment with β‐AR stimulation prevents heart failure in the experimental PPCM mouse model. Methods and results Postpartum (PP) female PPCM‐prone mice with a cardiomyocyte‐restricted STAT3‐deficiency (αMHC‐Cretg/+;Stat3fl/fl; CKO) were treated with perhexiline over two to three pregnancies and nursing periods (2/3PP) or were co‐treated with perhexiline after one pregnancy (1PP) under chronic β‐AR stimulation using isoproterenol (Iso) infusion. Perhexiline was not able to prevent onset of PPCM in CKO mice (FS: CKO Pexsig‐2/3PP: 25 ± 12% vs. CKO Ctrl‐2/3PP: 24 ± 9%, n.s.) but attenuated worsening of left ventricular function in response to treatment with the β‐AR agonist Iso (FS: CKO Pexsig‐Iso‐1PP: 19 ± 4% vs. CKO Ctrl‐Iso‐1PP: 11 ± 5%, P < 0.05). Conclusions Treatment of PPCM patients with β‐AR agonists should be avoided whenever possible. In cases with CS complicating PPCM, when treatment with β‐AR agonists cannot be prevented, co‐medication with perhexiline might help to reduce the cardiotoxic side effects of β‐AR stimulation. Clinical data are necessary to further validate this therapeutic approach.
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Affiliation(s)
- Tobias J Pfeffer
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Manuel List
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Julia H Müller
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Johann Bauersachs
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Denise Hilfiker-Kleiner
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany.,Department of Cardiovascular Complications of Oncologic Therapies, Medical Faculty, Philipps University Marburg, Marburg, Germany
| | - Melanie Ricke-Hoch
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
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7
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Kirchhoff H, Karsli U, Schoenherr C, Battmer K, Erschow S, Talbot SR, Steinemann D, Heuser M, Heidenreich O, Hilfiker-Kleiner D, Ganser A, Eder M, Scherr M. Venetoclax and dexamethasone synergize with inotuzumab ozogamicin-induced DNA damage signaling in B-lineage ALL. Blood 2021; 137:2657-2661. [PMID: 33512436 PMCID: PMC9635529 DOI: 10.1182/blood.2020008544] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 08/04/2020] [Accepted: 12/04/2020] [Indexed: 11/20/2022] Open
Abstract
Adult patients with relapsed B-cell precursor acute lymphoblastic leukemia (BCP-ALL) have a dismal prognosis. To improve pharmacotherapy, we analyzed induction of apoptosis by venetoclax and inotuzumab ozogamicin in terms of cytotoxicity and mode of action. Flow cytometry-based analyses of mitochondrial outer membrane permeabilization (MOMP) and ataxia telangiectasia mutated activation demonstrate rapid induction of MOMP by venetoclax and DNA damage signaling by inotuzumab ozogamicin, respectively. In primary ALL samples and patient-derived xenograft (PDX) models, venetoclax and inotuzumab ozogamicin cooperated and synergized in combination with dexamethasone in vitro in all tested samples of ALL. In murine PDX models, inotuzumab ozogamicin, but not venetoclax, induced complete remission in a dose-dependent manner but constantly failed to achieve relapse-free survival. In contrast, combination therapy with venetoclax, dexamethasone, and inotuzumab ozogamicin induced long-term leukemia-free survival and treatment-free survival in all 3 ALL-PDX models tested. These data demonstrate synergistic and highly efficient pharmacotherapy in preclinical models that qualify for evaluation in clinical trials.
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Affiliation(s)
- Hanna Kirchhoff
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation
| | - Uemran Karsli
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation
| | - Caroline Schoenherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation
| | - Karin Battmer
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation
| | | | | | - Doris Steinemann
- Department of Human Genetics, Hannover Medical School, Hannover, Germany; and
| | - Michael Heuser
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation
| | - Olaf Heidenreich
- Wolfson Childhood Cancer Research Centre, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | | | - Arnold Ganser
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation
| | - Matthias Eder
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation
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8
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Heimerl M, Sieve I, Ricke-Hoch M, Erschow S, Battmer K, Scherr M, Hilfiker-Kleiner D. Neuraminidase-1 promotes heart failure after ischemia/reperfusion injury by affecting cardiomyocytes and invading monocytes/macrophages. Basic Res Cardiol 2020; 115:62. [PMID: 32975669 PMCID: PMC7519006 DOI: 10.1007/s00395-020-00821-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 09/01/2020] [Indexed: 12/31/2022]
Abstract
Neuraminidase (NEU)1 forms a multienzyme complex with beta-galactosidase (β-GAL) and protective-protein/cathepsin (PPC) A, which cleaves sialic-acids from cell surface glycoconjugates. We investigated the role of NEU1 in the myocardium after ischemia/reperfusion (I/R). Three days after inducing I/R, left ventricles (LV) of male mice (3 months-old) displayed upregulated neuraminidase activity and increased NEU1, β-GAL and PPCA expression. Mice hypomorphic for neu1 (hNEU1) had less neuraminidase activity, fewer pro-inflammatory (Lin−CD11b+F4/80+Ly-6Chigh), and more anti-inflammatory macrophages (Lin−CD11b+F4/80+Ly-6Clow) 3 days after I/R, and less LV dysfunction 14 days after I/R. WT mice transplanted with hNEU1-bone marrow (BM) and hNEU1 mice with WT-BM showed significantly better LV function 14 days after I/R compared with WT mice with WT-BM. Mice with a cardiomyocyte-specific NEU1 overexpression displayed no difference in inflammation 3 days after I/R, but showed increased cardiomyocyte hypertrophy, reduced expression and mislocalization of Connexin-43 in gap junctions, and LV dysfunction despite a similar infarct scar size to WT mice 14 days after I/R. The upregulation of NEU1 after I/R contributes to heart failure by promoting inflammation in invading monocytes/macrophages, enhancing cardiomyocyte hypertrophy, and impairing gap junction function, suggesting that systemic NEU1 inhibition may reduce heart failure after I/R.
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Affiliation(s)
- Maren Heimerl
- Molecular Cardiology, Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625, Hannover, Germany
| | - Irina Sieve
- Molecular Cardiology, Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625, Hannover, Germany
| | - Melanie Ricke-Hoch
- Molecular Cardiology, Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625, Hannover, Germany
| | - Sergej Erschow
- Molecular Cardiology, Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625, Hannover, Germany
| | - Karin Battmer
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Carl-Neuberg-Str.1, 30625, Hannover, Germany
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Carl-Neuberg-Str.1, 30625, Hannover, Germany
| | - Denise Hilfiker-Kleiner
- Molecular Cardiology, Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625, Hannover, Germany.
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9
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Grund A, Szaroszyk M, Döppner JK, Malek Mohammadi M, Kattih B, Korf-Klingebiel M, Gigina A, Scherr M, Kensah G, Jara-Avaca M, Gruh I, Martin U, Wollert KC, Gohla A, Katus HA, Müller OJ, Bauersachs J, Heineke J. A gene therapeutic approach to inhibit calcium and integrin binding protein 1 ameliorates maladaptive remodelling in pressure overload. Cardiovasc Res 2020; 115:71-82. [PMID: 29931050 DOI: 10.1093/cvr/cvy154] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 06/17/2018] [Indexed: 12/15/2022] Open
Abstract
Aims Chronic heart failure is becoming increasingly prevalent and is still associated with a high mortality rate. Myocardial hypertrophy and fibrosis drive cardiac remodelling and heart failure, but they are not sufficiently inhibited by current treatment strategies. Furthermore, despite increasing knowledge on cardiomyocyte intracellular signalling proteins inducing pathological hypertrophy, therapeutic approaches to target these molecules are currently unavailable. In this study, we aimed to establish and test a therapeutic tool to counteract the 22 kDa calcium and integrin binding protein (CIB) 1, which we have previously identified as nodal regulator of pathological cardiac hypertrophy and as activator of the maladaptive calcineurin/NFAT axis. Methods and results Among three different sequences, we selected a shRNA construct (shCIB1) to specifically down-regulate CIB1 by 50% upon adenoviral overexpression in neonatal rat cardiomyocytes (NRCM), and upon overexpression by an adeno-associated-virus (AAV) 9 vector in mouse hearts. Overexpression of shCIB1 in NRCM markedly reduced cellular growth, improved contractility of bioartificial cardiac tissue and reduced calcineurin/NFAT activation in response to hypertrophic stimulation. In mice, administration of AAV-shCIB1 strongly ameliorated eccentric cardiac hypertrophy and cardiac dysfunction during 2 weeks of pressure overload by transverse aortic constriction (TAC). Ultrastructural and molecular analyses revealed markedly reduced myocardial fibrosis, inhibition of hypertrophy associated gene expression and calcineurin/NFAT as well as ERK MAP kinase activation after TAC in AAV-shCIB1 vs. AAV-shControl treated mice. During long-term exposure to pressure overload for 10 weeks, AAV-shCIB1 treatment maintained its anti-hypertrophic and anti-fibrotic effects, but cardiac function was no longer improved vs. AAV-shControl treatment, most likely resulting from a reduction in myocardial angiogenesis upon downregulation of CIB1. Conclusions Inhibition of CIB1 by a shRNA-mediated gene therapy potently inhibits pathological cardiac hypertrophy and fibrosis during pressure overload. While cardiac function is initially improved by shCIB1, this cannot be kept up during persisting overload.
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Affiliation(s)
- Andrea Grund
- Klinik für Kardiologie und Angiologie, Medizinische Hochschule Hannover, Carl-Neuberg-Strasse 1, Hannover, Germany
| | - Malgorzata Szaroszyk
- Klinik für Kardiologie und Angiologie, Medizinische Hochschule Hannover, Carl-Neuberg-Strasse 1, Hannover, Germany
| | - Janina K Döppner
- Klinik für Kardiologie und Angiologie, Medizinische Hochschule Hannover, Carl-Neuberg-Strasse 1, Hannover, Germany
| | - Mona Malek Mohammadi
- Klinik für Kardiologie und Angiologie, Medizinische Hochschule Hannover, Carl-Neuberg-Strasse 1, Hannover, Germany.,Abteilung für Herz- und Kreislaufforschung, European Center for Angioscience (ECAS), Medizinische Fakultät Mannheim, Universität Heidelberg, Ludolf-Krehl-Straße 7-11, Mannheim, Germany
| | - Badder Kattih
- Klinik für Kardiologie und Angiologie, Medizinische Hochschule Hannover, Carl-Neuberg-Strasse 1, Hannover, Germany.,Abteilung für Herz- und Kreislaufforschung, European Center for Angioscience (ECAS), Medizinische Fakultät Mannheim, Universität Heidelberg, Ludolf-Krehl-Straße 7-11, Mannheim, Germany
| | - Mortimer Korf-Klingebiel
- Klinik für Kardiologie und Angiologie, Medizinische Hochschule Hannover, Carl-Neuberg-Strasse 1, Hannover, Germany
| | - Anna Gigina
- Klinik für Kardiologie und Angiologie, Medizinische Hochschule Hannover, Carl-Neuberg-Strasse 1, Hannover, Germany
| | - Michaela Scherr
- Klinik für Hämatologie, Hämostaseologie, Onkologie und Stammzelltransplantation
| | - George Kensah
- Leibniz Forschungslaboratorien für Biotechnologie und künstliche Organe, Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie.,Cluster of Excellence-Rebirth, Medizinische Hochschule Hannover, Carl-Neuberg-Straße 1, Hannover, Germany
| | - Monica Jara-Avaca
- Leibniz Forschungslaboratorien für Biotechnologie und künstliche Organe, Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie.,Cluster of Excellence-Rebirth, Medizinische Hochschule Hannover, Carl-Neuberg-Straße 1, Hannover, Germany
| | - Ina Gruh
- Leibniz Forschungslaboratorien für Biotechnologie und künstliche Organe, Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie.,Cluster of Excellence-Rebirth, Medizinische Hochschule Hannover, Carl-Neuberg-Straße 1, Hannover, Germany
| | - Ulrich Martin
- Leibniz Forschungslaboratorien für Biotechnologie und künstliche Organe, Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie.,Cluster of Excellence-Rebirth, Medizinische Hochschule Hannover, Carl-Neuberg-Straße 1, Hannover, Germany
| | - Kai C Wollert
- Klinik für Kardiologie und Angiologie, Medizinische Hochschule Hannover, Carl-Neuberg-Strasse 1, Hannover, Germany.,Cluster of Excellence-Rebirth, Medizinische Hochschule Hannover, Carl-Neuberg-Straße 1, Hannover, Germany
| | - Antje Gohla
- Institut für Pharmakologie und Toxikologie and Rudolf Virchow Zentrum für Experimentelle Biomedizin, Universität Würzburg, Versbacher Straße 9, Würzburg, Germany
| | - Hugo A Katus
- Klinik für Kardiologie, Angiologie und Pneumologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 410, Heidelberg, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site Heidelberg, Mannheim, Im Neuenheimer Feld 410, Heidelberg, Germany
| | - Oliver J Müller
- Klinik für Kardiologie, Angiologie und Pneumologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 410, Heidelberg, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site Heidelberg, Mannheim, Im Neuenheimer Feld 410, Heidelberg, Germany.,Klinik für Innere Medizin III, Universitätsklinikum Schleswig-Holstein, Arnold-Heller-Straße 3, Kiel, Germany
| | - Johann Bauersachs
- Klinik für Kardiologie und Angiologie, Medizinische Hochschule Hannover, Carl-Neuberg-Strasse 1, Hannover, Germany.,Cluster of Excellence-Rebirth, Medizinische Hochschule Hannover, Carl-Neuberg-Straße 1, Hannover, Germany
| | - Joerg Heineke
- Klinik für Kardiologie und Angiologie, Medizinische Hochschule Hannover, Carl-Neuberg-Strasse 1, Hannover, Germany.,Abteilung für Herz- und Kreislaufforschung, European Center for Angioscience (ECAS), Medizinische Fakultät Mannheim, Universität Heidelberg, Ludolf-Krehl-Straße 7-11, Mannheim, Germany.,Cluster of Excellence-Rebirth, Medizinische Hochschule Hannover, Carl-Neuberg-Straße 1, Hannover, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site Heidelberg, Mannheim, Im Neuenheimer Feld 410, Heidelberg, Germany
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10
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Schoenherr C, Wohlan K, Dallmann I, Pich A, Hegermann J, Ganser A, Hilfiker-Kleiner D, Heidenreich O, Scherr M, Eder M. Stable depletion of RUNX1-ETO in Kasumi-1 cells induces expression and enhanced proteolytic activity of Cathepsin G and Neutrophil Elastase. PLoS One 2019; 14:e0225977. [PMID: 31826021 PMCID: PMC6905530 DOI: 10.1371/journal.pone.0225977] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 09/09/2019] [Accepted: 11/15/2019] [Indexed: 01/24/2023] Open
Abstract
The oncogenic fusion protein RUNX1-ETO is a product of the t(8;21) translocation and consists of the hematopoietic transcriptional master regulator RUNX1 and the repressor ETO. RUNX1-ETO is found in 10–15% of acute myeloid leukemia and interferes with the expression of genes that are essential for myeloid differentiation. The neutrophil serine protease Cathepsin G is one of the genes suppressed by RUNX1-ETO, but little is known about its impact on the regulation of other lysosomal proteases. By lentiviral transduction of the t(8;21) positive cell line Kasumi-1 with an RUNX1-ETO specific shRNA, we analyzed long-term effects of stable RUNX1-ETO silencing on cellular phenotypes and target gene expression. Stable anti RUNX1-ETO RNAi reduces both proliferation and apoptosis in Kasumi-1 cells. In addition, long-term knockdown of RUNX1-ETO leads to an upregulation of proteolytic activity in Kasumi-1 cells, which may be released in vitro upon cell lysis leading to massive degradation of cellular proteins. We therefore propose that protein expression data of RUNX1-ETO-silenced Kasumi-1 cells must be analyzed with caution, as cell lysis conditions can heavily influence the results of studies on protein expression. Next, a mass spectrometry-based approach was used to identify protease cleavage patterns in RUNX1-ETO-depleted Kasumi-1 cells and Neutrophil Elastase has been identified as a RUNX1-ETO candidate target. Finally, proteolytic activity of Neutrophil Elastase and Cathepsin G was functionally confirmed by si/shRNA-mediated knockdown in Kasumi-1 cells.
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Affiliation(s)
- Caroline Schoenherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Katharina Wohlan
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Iris Dallmann
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Andreas Pich
- Department of Toxicology, Research Core Unit Proteomics, Hannover Medical School, Hannover, Germany
| | - Jan Hegermann
- Department of Functional and Applied Anatomy, Research Core Unit Electron Microscopy, Hannover Medical School, Hannover, Germany
| | - Arnold Ganser
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | | | - Olaf Heidenreich
- Wolfson Childhood Cancer Research Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle, United Kingdom
- Princess Maxima Center for Pediatric Oncology, Utrecht, Netherlands
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
- * E-mail: (MS); (ME)
| | - Matthias Eder
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
- * E-mail: (MS); (ME)
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11
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Nagel S, Scherr M, MacLeod RAF, Pommerenke C, Koeppel M, Meyer C, Kaufmann M, Dallmann I, Drexler HG. NKL homeobox gene activities in normal and malignant myeloid cells. PLoS One 2019; 14:e0226212. [PMID: 31825998 PMCID: PMC6905564 DOI: 10.1371/journal.pone.0226212] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 09/02/2019] [Accepted: 11/21/2019] [Indexed: 12/30/2022] Open
Abstract
Recently, we have documented a hematopoietic NKL-code mapping physiological expression patterns of NKL homeobox genes in early hematopoiesis and in lymphopoiesis, which spotlights genes deregulated in lymphoid malignancies. Here, we enlarge this map to include normal NKL homeobox gene expressions in myelopoiesis by analyzing public expression profiling data and primary samples from developing and mature myeloid cells. We thus uncovered differential activities of six NKL homeobox genes, namely DLX2, HHEX, HLX, HMX1, NKX3-1 and VENTX. We further examined public expression profiling data of 251 acute myeloid leukemia (AML) and 183 myelodysplastic syndrome (MDS) patients, thereby identifying 24 deregulated genes. These results revealed frequent deregulation of NKL homeobox genes in myeloid malignancies. For detailed analysis we focused on NKL homeobox gene NANOG, which acts as a stem cell factor and is correspondingly expressed alone in hematopoietic progenitor cells. We detected aberrant expression of NANOG in a small subset of AML patients and in AML cell line NOMO-1, which served as a model. Karyotyping and genomic profiling discounted rearrangements of the NANOG locus at 12p13. But gene expression analyses of AML patients and AML cell lines after knockdown and overexpression of NANOG revealed regulators and target genes. Accordingly, NKL homeobox genes HHEX, DLX5 and DLX6, stem cell factors STAT3 and TET2, and the NOTCH-pathway were located upstream of NANOG while NKL homeobox genes HLX and VENTX, transcription factors KLF4 and MYB, and anti-apoptosis-factor MIR17HG represented target genes. In conclusion, we have extended the NKL-code to the myeloid lineage and thus identified several NKL homeobox genes deregulated in AML and MDS. These data indicate a common oncogenic role of NKL homeobox genes in both lymphoid and myeloid malignancies. For misexpressed NANOG we identified an aberrant regulatory network, which contributes to the understanding of the oncogenic activity of NKL homeobox genes.
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Affiliation(s)
- Stefan Nagel
- Department of Human and Animal Cell Lines, Leibniz-Institute DSMZ–German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
- * E-mail:
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Roderick A. F. MacLeod
- Department of Human and Animal Cell Lines, Leibniz-Institute DSMZ–German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Claudia Pommerenke
- Department of Human and Animal Cell Lines, Leibniz-Institute DSMZ–German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Max Koeppel
- Department of Human and Animal Cell Lines, Leibniz-Institute DSMZ–German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Corinna Meyer
- Department of Human and Animal Cell Lines, Leibniz-Institute DSMZ–German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Maren Kaufmann
- Department of Human and Animal Cell Lines, Leibniz-Institute DSMZ–German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Iris Dallmann
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Hans G. Drexler
- Department of Human and Animal Cell Lines, Leibniz-Institute DSMZ–German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
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12
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Ricke-Hoch M, Hoes MF, Pfeffer TJ, Schlothauer S, Nonhoff J, Haidari S, Bomer N, Scherr M, Stapel B, Stelling E, Kiyan Y, Falk C, Haghikia A, Binah O, Arany Z, Thum T, Bauersachs J, van der Meer P, Hilfiker-Kleiner D. In peripartum cardiomyopathy plasminogen activator inhibitor-1 is a potential new biomarker with controversial roles. Cardiovasc Res 2019; 116:1875-1886. [DOI: 10.1093/cvr/cvz300] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 10/11/2019] [Accepted: 11/07/2019] [Indexed: 12/17/2022] Open
Abstract
Abstract
Aims
Peripartum cardiomyopathy (PPCM) is a life-threatening heart disease occurring in previously heart-healthy women. A common pathomechanism in PPCM involves the angiostatic 16 kDa-prolactin (16 kDa-PRL) fragment, which via NF-κB-mediated up-regulation of microRNA-(miR)-146a induces vascular damage and heart failure. We analyse whether the plasminogen activator inhibitor-1 (PAI-1) is involved in the pathophysiology of PPCM.
Methods and results
In healthy age-matched postpartum women (PP-Ctrl, n = 53, left ventricular ejection fraction, LVEF > 55%), PAI-1 plasma levels were within the normal range (21 ± 10 ng/mL), but significantly elevated (64 ± 38 ng/mL, P < 0.01) in postpartum PPCM patients at baseline (BL, n = 64, mean LVEF: 23 ± 8%). At 6-month follow-up (n = 23), PAI-1 levels decreased (36 ± 14 ng/mL, P < 0.01 vs. BL) and LVEF (49 ± 11%) improved. Increased N-terminal pro-brain natriuretic peptide and Troponin T did not correlate with PAI-1. C-reactive protein, interleukin (IL)-6 and IL-1β did not differ between PPCM patients and PP-Ctrl. MiR-146a was 3.6-fold (P < 0.001) higher in BL-PPCM plasma compared with PP-Ctrl and correlated positively with PAI-1. In BL-PPCM serum, 16 kDa-PRL coprecipitated with PAI-1, which was associated with higher (P < 0.05) uPAR-mediated NF-κB activation in endothelial cells compared with PP-Ctrl serum. Cardiac biopsies and dermal fibroblasts from PPCM patients displayed higher PAI-1 mRNA levels (P < 0.05) than healthy controls. In PPCM mice (due to a cardiomyocyte-specific-knockout for STAT3, CKO), cardiac PAI-1 expression was higher than in postpartum wild-type controls, whereas a systemic PAI-1-knockout in CKO mice accelerated peripartum cardiac fibrosis, inflammation, heart failure, and mortality.
Conclusion
In PPCM patients, circulating and cardiac PAI-1 expression are up-regulated. While circulating PAI-1 may add 16 kDa-PRL to induce vascular impairment via the uPAR/NF-κB/miR-146a pathway, experimental data suggest that cardiac PAI-1 expression seems to protect the PPCM heart from fibrosis. Thus, measuring circulating PAI-1 and miR-146a, together with an uPAR/NF-κB-activity assay could be developed into a specific diagnostic marker assay for PPCM, but unrestricted reduction of PAI-1 for therapy may not be advised.
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Affiliation(s)
- Melanie Ricke-Hoch
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Martijn F Hoes
- Department of Cardiology, AB31, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Tobias J Pfeffer
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Stella Schlothauer
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Justus Nonhoff
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Susanna Haidari
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Nils Bomer
- Department of Cardiology, AB31, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Britta Stapel
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Elisabeth Stelling
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Yulia Kiyan
- Nephrology Department, Hannover Medical School, Hannover, Germany
| | - Christine Falk
- Institute of Transplant Immunology, IFB-Tx, Hannover Medical School, Hannover, Germany
| | - Arash Haghikia
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
- Department of Cardiology, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Berlin, Germany
| | - Ofer Binah
- Department of Physiology, Ruth & Bruce Rappaport Faculty of Medicine, Technion—Israel Institute of Technology, Haifa, Israel
| | - Zolt Arany
- Cardiovascular Institute and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Thomas Thum
- Department of Molecular und Translational Therapy strategies (IMTTS), Hannover Medical School, Hannover, Germany
| | - Johann Bauersachs
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Peter van der Meer
- Department of Cardiology, AB31, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Denise Hilfiker-Kleiner
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
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13
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Scherr M, Kirchhoff H, Battmer K, Wohlan K, Lee CW, Ricke-Hoch M, Erschow S, Law E, Kloos A, Heuser M, Ganser A, Hilfiker-Kleiner D, Heidenreich O, Eder M. Optimized induction of mitochondrial apoptosis for chemotherapy-free treatment of BCR-ABL+acute lymphoblastic leukemia. Leukemia 2019; 33:1313-1323. [PMID: 30546081 PMCID: PMC6756054 DOI: 10.1038/s41375-018-0315-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [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: 07/25/2018] [Revised: 11/06/2018] [Accepted: 11/07/2018] [Indexed: 01/30/2023]
Abstract
BCR-ABL+acute lymphoblastic leukemia (ALL) in adults has a poor prognosis with allogeneic stem cell transplantation (SCT) considered the best curative option for suitable patients. We here characterize the curative potential of BH3-mimetics differentially targeting mitochondrial BCL2-family members using a combination therapy approach with dexamethasone and tyrosine kinase inhibitors targeting BCR-ABL. In BCR-ABL + ALL BH3-mimetics act by redistribution of mitochondrial activator BIM, which is strongly required for cytotoxicity of the BCL2-specific BH3-mimetic ABT-199, tyrosine kinase inhibitors (TKIs) and dexamethasone. BIM expression is enhanced by dexamethasone and TKIs and both synergize with ABT-199 in BCR-ABL + ALL. Triple combinations with ABT-199, dexamethasone and TKIs efficiently attenuate leukemia progression both in tissue culture and in primary cell xenotransplantation models. Notably, the dasatinib-containing combination led to treatment- and leukemia-free long-term survival in a BCR-ABL + mouse model. Finally, response to BH3-mimetics can be predicted for individual patients in a clinically relevant setting. These data demonstrate curative targeted and chemotherapy-free pharmacotherapy for BCR-ABL + ALL in a preclinical model. Clinical evaluation, in particular for patients not suitable for allogeneic SCT, is warranted.
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MESH Headings
- Animals
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Apoptosis/drug effects
- Bridged Bicyclo Compounds, Heterocyclic/administration & dosage
- Dasatinib/administration & dosage
- Dexamethasone/administration & dosage
- Drug Resistance, Neoplasm
- Humans
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- Mice
- Mice, Inbred NOD
- Mice, SCID
- Mitochondria/drug effects
- Mitochondria/metabolism
- Mitochondria/pathology
- Sulfonamides/administration & dosage
- Tumor Cells, Cultured
- Xenograft Model Antitumor Assays
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Affiliation(s)
- Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany.
| | - Hanna Kirchhoff
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Karin Battmer
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Katharina Wohlan
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Chun-Wei Lee
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Melanie Ricke-Hoch
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Sergej Erschow
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Edward Law
- Newcastle Cancer Centre at the Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, UK
| | - Arnold Kloos
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Michael Heuser
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Arnold Ganser
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | | | - Olaf Heidenreich
- Newcastle Cancer Centre at the Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, UK
| | - Matthias Eder
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany.
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14
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Eisen B, Ben Jehuda R, Cuttitta AJ, Mekies LN, Shemer Y, Baskin P, Reiter I, Willi L, Freimark D, Gherghiceanu M, Monserrat L, Scherr M, Hilfiker-Kleiner D, Arad M, Michele DE, Binah O. Electrophysiological abnormalities in induced pluripotent stem cell-derived cardiomyocytes generated from Duchenne muscular dystrophy patients. J Cell Mol Med 2019; 23:2125-2135. [PMID: 30618214 PMCID: PMC6378185 DOI: 10.1111/jcmm.14124] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 12/02/2018] [Accepted: 12/05/2018] [Indexed: 01/09/2023] Open
Abstract
Duchenne muscular dystrophy (DMD) is an X‐linked progressive muscle degenerative disease, caused by mutations in the dystrophin gene and resulting in death because of respiratory or cardiac failure. To investigate the cardiac cellular manifestation of DMD, we generated induced pluripotent stem cells (iPSCs) and iPSC‐derived cardiomyocytes (iPSC‐CMs) from two DMD patients: a male and female manifesting heterozygous carrier. Dystrophin mRNA and protein expression were analysed by qRT‐PCR, RNAseq, Western blot and immunofluorescence staining. For comprehensive electrophysiological analysis, current and voltage clamp were used to record transmembrane action potentials and ion currents, respectively. Microelectrode array was used to record extracellular electrograms. X‐inactive specific transcript (XIST) and dystrophin expression analyses revealed that female iPSCs underwent X chromosome reactivation (XCR) or erosion of X chromosome inactivation, which was maintained in female iPSC‐CMs displaying mixed X chromosome expression of wild type (WT) and mutated alleles. Both DMD female and male iPSC‐CMs presented low spontaneous firing rate, arrhythmias and prolonged action potential duration. DMD female iPSC‐CMs displayed increased beat rate variability (BRV). DMD male iPSC‐CMs manifested decreased If density, and DMD female and male iPSC‐CMs showed increased ICa,L density. Our findings demonstrate cellular mechanisms underlying electrophysiological abnormalities and cardiac arrhythmias in DMD.
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Affiliation(s)
- Binyamin Eisen
- Department of Physiology, Biophysics and Systems Biology, Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - Ronen Ben Jehuda
- Department of Physiology, Biophysics and Systems Biology, Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel.,Department of Biotechnology, Technion - Israel Institute of Technology, Haifa, Israel
| | - Ashley J Cuttitta
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan
| | - Lucy N Mekies
- Department of Physiology, Biophysics and Systems Biology, Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - Yuval Shemer
- Department of Physiology, Biophysics and Systems Biology, Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - Polina Baskin
- Department of Physiology, Biophysics and Systems Biology, Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - Irina Reiter
- Department of Physiology, Biophysics and Systems Biology, Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - Lubna Willi
- Department of Physiology, Biophysics and Systems Biology, Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - Dov Freimark
- Leviev Heart Center, Sheba Medical Center, Ramat Gan, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | | | | | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | | | - Michael Arad
- Leviev Heart Center, Sheba Medical Center, Ramat Gan, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Daniel E Michele
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan
| | - Ofer Binah
- Department of Physiology, Biophysics and Systems Biology, Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
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15
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Lee CW, Schoenherr C, Battmer K, Ganser A, Hilfiker-Kleiner D, David S, Eder M, Scherr M. miR-125b regulates chemotaxis and survival of bone marrow derived granulocytes in vitro and in vivo. PLoS One 2018; 13:e0204942. [PMID: 30286140 PMCID: PMC6171867 DOI: 10.1371/journal.pone.0204942] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 05/16/2018] [Accepted: 09/16/2018] [Indexed: 12/17/2022] Open
Abstract
The evolutionary conserved miR-125b is highly expressed in hematopoietic stem cells (HSC) enhancing self-renewal and survival. Accordingly, over-expression of miR-125b in HSC may induce myeloproliferative neoplasms and leukemia with long latency. During hematopoietic cell maturation miR-125b expression decreases, and the function of miR-125b in mature granulocytes is not yet known. We here use transplantation of miR-125b over-expressing HSC into syngeneic hosts to generate and analyse miR-125b over-expressing granulocytes. Under steady state conditions, miR-125b over-expression inhibits granulocytic chemotaxis and LPS- but not PMA- and TNFα- induced cell death. Inflammatory signals modulate the effects of miR-125b over-expression as demonstrated in a sterile peritonitis and a polymicrobial sepsis model. In particular, survival of mice with miR-125b over-expressing granulocytes is significantly reduced as compared to controls in the polymicrobial sepsis model. These data demonstrate inflammation dependent effects of miR-125b in granulocytes and may point to therapeutic intervention strategies in the future.
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Affiliation(s)
- Chun-Wei Lee
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Caroline Schoenherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Karin Battmer
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Arnold Ganser
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | | | - Sascha David
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Matthias Eder
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
- * E-mail: (ME); (MS)
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
- * E-mail: (ME); (MS)
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16
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Stapel B, Kohlhaas M, Ricke-Hoch M, Haghikia A, Erschow S, Knuuti J, Silvola JMU, Roivainen A, Saraste A, Nickel AG, Saar JA, Sieve I, Pietzsch S, Müller M, Bogeski I, Kappl R, Jauhiainen M, Thackeray JT, Scherr M, Bengel FM, Hagl C, Tudorache I, Bauersachs J, Maack C, Hilfiker-Kleiner D. Low STAT3 expression sensitizes to toxic effects of β-adrenergic receptor stimulation in peripartum cardiomyopathy. Eur Heart J 2018; 38:349-361. [PMID: 28201733 PMCID: PMC5381590 DOI: 10.1093/eurheartj/ehw086] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 12/01/2015] [Accepted: 12/13/2015] [Indexed: 12/19/2022] Open
Abstract
Aims The benefit of the β1-adrenergic receptor (β1-AR) agonist dobutamine for treatment of acute heart failure in peripartum cardiomyopathy (PPCM) is controversial. Cardiac STAT3 expression is reduced in PPCM patients. Mice carrying a cardiomyocyte-restricted deletion of STAT3 (CKO) develop PPCM. We hypothesized that STAT3-dependent signalling networks may influence the response to β-AR agonist treatment in PPCM patients and analysed this hypothesis in CKO mice. Methods and Results Follow-up analyses in 27 patients with severe PPCM (left ventricular ejection fraction ≤25%) revealed that 19 of 20 patients not obtaining dobutamine improved cardiac function. All seven patients obtaining dobutamine received heart transplantation (n = 4) or left ventricular assist devices (n = 3). They displayed diminished myocardial triglyceride, pyruvate, and lactate content compared with non-failing controls. The β-AR agonist isoproterenol (Iso) induced heart failure with high mortality in postpartum female, in non-pregnant female and in male CKO, but not in wild-type mice. Iso induced heart failure and high mortality in CKO mice by impairing fatty acid and glucose uptake, thereby generating a metabolic deficit. The latter was governed by disturbed STAT3-dependent signalling networks, microRNA-199a-5p, microRNA-7a-5p, insulin/glucose transporter-4, and neuregulin/ErbB signalling. The resulting cardiac energy depletion and oxidative stress promoted dysfunction and cardiomyocyte loss inducing irreversible heart failure, which could be attenuated by the β1-AR blocker metoprolol or glucose-uptake-promoting drugs perhexiline and etomoxir. Conclusions Iso impairs glucose uptake, induces energy depletion, oxidative stress, dysfunction, and death in STAT3-deficient cardiomyocytes mainly via β1-AR stimulation. These cellular alterations may underlie the dobutamine-induced irreversible heart failure progression in PPCM patients who frequently display reduced cardiac STAT3 expression.
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Affiliation(s)
- Britta Stapel
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Michael Kohlhaas
- Clinic for Internal Medicine III, School of Medicine, Saarland University, 66421 Homburg, Germany
| | - Melanie Ricke-Hoch
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Arash Haghikia
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Sergej Erschow
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Juhani Knuuti
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Johanna M U Silvola
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Anne Roivainen
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Antti Saraste
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Alexander G Nickel
- Clinic for Internal Medicine III, School of Medicine, Saarland University, 66421 Homburg, Germany
| | - Jasmin A Saar
- Clinic for Internal Medicine III, School of Medicine, Saarland University, 66421 Homburg, Germany
| | - Irina Sieve
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Stefan Pietzsch
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Mirco Müller
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Ivan Bogeski
- Department of Biophysics, CIPMM, School of Medicine, Saarland University, Homburg, Germany
| | - Reinhard Kappl
- Department of Biophysics, CIPMM, School of Medicine, Saarland University, Homburg, Germany
| | - Matti Jauhiainen
- Public Health Genomics Unit, National Institute for Health and Welfare, Genomics and Biomarkers Unit, Helsinki, Finland
| | - James T Thackeray
- Department of Nuclear Medicine, Hannover Medical School, Hannover, Germany
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Medical School Hannover, Hannover, Germany
| | - Frank M Bengel
- Department of Nuclear Medicine, Hannover Medical School, Hannover, Germany
| | | | - Igor Tudorache
- Department of Cardiac, Thoracic, Transplantation and Vascular Surgery, MHH, Hannover, Germany
| | - Johann Bauersachs
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Christoph Maack
- Clinic for Internal Medicine III, School of Medicine, Saarland University, 66421 Homburg, Germany
| | - Denise Hilfiker-Kleiner
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
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17
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Ricke-Hoch M, Sieve I, Kasten M, Battmer K, Stapel B, Leisegang MS, Haverich A, Scherr M, Hilfiker-Kleiner D. P339NEU1 increases monocyte and macrophage-mediated inflammation and may act as a potential modulator of atherosclerosis. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy060.252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M Ricke-Hoch
- Hannover Medical School, Department of Cardiology and Angiology, Hannover, Germany
| | - I Sieve
- Hannover Medical School, Department of Cardiology and Angiology, Hannover, Germany
| | - M Kasten
- Hannover Medical School, Department of Cardiology and Angiology, Hannover, Germany
| | - K Battmer
- Hannover Medical School, Department of Hematology, Hemostasis, Oncology & Stem Cell Transplantation, Hannover, Germany
| | - B Stapel
- Hannover Medical School, Department of Cardiology and Angiology, Hannover, Germany
| | - M S Leisegang
- JW Goethe University, Institute for Cardiovascular Physiology, Frankfurt am Main, Germany
| | - A Haverich
- Hannover Medical School, Department ofCardiothoracic, Transplantation and Vascular Surgery, Hannover, Germany
| | - M Scherr
- Hannover Medical School, Department of Hematology, Hemostasis, Oncology & Stem Cell Transplantation, Hannover, Germany
| | - D Hilfiker-Kleiner
- Hannover Medical School, Department of Cardiology and Angiology, Hannover, Germany
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18
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Sieve I, Ricke-Hoch M, Kasten M, Battmer K, Stapel B, Falk CS, Leisegang MS, Haverich A, Scherr M, Hilfiker-Kleiner D. A positive feedback loop between IL-1β, LPS and NEU1 may promote atherosclerosis by enhancing a pro-inflammatory state in monocytes and macrophages. Vascul Pharmacol 2018; 103-105:16-28. [DOI: 10.1016/j.vph.2018.01.005] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 12/13/2017] [Accepted: 01/19/2018] [Indexed: 01/22/2023]
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19
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Lochner SJ, Scherr M, Perl M, Grove C. [Severe blunt thoracic trauma caused by ski collision]. Unfallchirurg 2017; 120:162-166. [PMID: 28054124 DOI: 10.1007/s00113-016-0297-7] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
An approximately 25-year-old skier collided in a ski-run intersection. At high speed, he first hit another skier and then smashed into a snow cannon. He died from his injuries a short time later in hospital. A whole-body CT scan was conducted under resuscitation conditions, which was followed by an autopsy. The investigation revealed a severe blunt thoracic trauma as cause of death. The detailed analysis was the result of the combination of the two methods of investigation, CT scan and autopsy. The methods complemented each other effectively and allowed for a detailed presentation of the injury pattern. In conjunction with the additional analytical accident report, this combination of CT scan and autopsy contributes towards a reconstruction of accidents and the development of prevention measures and related protective systems.
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Affiliation(s)
- S J Lochner
- Institut für Rechtsmedizin, Ludwig-Maximilians-Universität, Nußbaumstr. 26, 80336, München, Deutschland.
| | - M Scherr
- Radiologie, Berufsgenossenschaftliche Unfallklinik Murnau, Murnau, Deutschland
| | - M Perl
- Unfallchirurgie, Berufsgenossenschaftliche Unfallklinik Murnau, Murnau, Deutschland
| | - C Grove
- Institut für Rechtsmedizin, Ludwig-Maximilians-Universität, Nußbaumstr. 26, 80336, München, Deutschland
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20
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Thackeray JT, Pietzsch S, Stapel B, Ricke-Hoch M, Lee CW, Bankstahl JP, Scherr M, Heineke J, Scharf G, Haghikia A, Bengel FM, Hilfiker-Kleiner D. Insulin supplementation attenuates cancer-induced cardiomyopathy and slows tumor disease progression. JCI Insight 2017; 2:93098. [PMID: 28515362 DOI: 10.1172/jci.insight.93098] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [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: 01/26/2017] [Accepted: 04/11/2017] [Indexed: 12/18/2022] Open
Abstract
Advanced cancer induces fundamental changes in metabolism and promotes cardiac atrophy and heart failure. We discovered systemic insulin deficiency in cachectic cancer patients. Similarly, mice with advanced B16F10 melanoma (B16F10-TM) or colon 26 carcinoma (C26-TM) displayed decreased systemic insulin associated with marked cardiac atrophy, metabolic impairment, and function. B16F10 and C26 tumors decrease systemic insulin via high glucose consumption, lowering pancreatic insulin production and producing insulin-degrading enzyme. As tumor cells consume glucose in an insulin-independent manner, they shift glucose away from cardiomyocytes. Since cardiomyocytes in both tumor models remained insulin responsive, low-dose insulin supplementation by subcutaneous implantation of insulin-releasing pellets improved cardiac glucose uptake, atrophy, and function, with no adverse side effects. In addition, by redirecting glucose to the heart in addition to other organs, the systemic insulin treatment lowered glucose usage by the tumor and thereby decreased tumor growth and volume. Insulin corrected the cancer-induced reduction in cardiac Akt activation and the subsequent overactivation of the proteasome and autophagy. Thus, cancer-induced systemic insulin depletion contributes to cardiac wasting and failure and may promote tumor growth. Low-dose insulin supplementation attenuates these processes and may be supportive in cardio-oncologic treatment concepts.
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Affiliation(s)
| | - Stefan Pietzsch
- Division of Molecular Cardiology, Department of Cardiology and Angiology, and
| | - Britta Stapel
- Division of Molecular Cardiology, Department of Cardiology and Angiology, and
| | - Melanie Ricke-Hoch
- Division of Molecular Cardiology, Department of Cardiology and Angiology, and
| | - Chun-Wei Lee
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | | | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Jörg Heineke
- Division of Molecular Cardiology, Department of Cardiology and Angiology, and
| | - Gesine Scharf
- Division of Molecular Cardiology, Department of Cardiology and Angiology, and
| | - Arash Haghikia
- Division of Molecular Cardiology, Department of Cardiology and Angiology, and.,Department of Cardiology, Charité Universitätsmedizin Berlin (Campus Benjamin Franklin), Berlin, Germany
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21
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Nonhoff J, Ricke-Hoch M, Mueller M, Stapel B, Pfeffer T, Kasten M, Scherr M, von Kaisenberg C, Bauersachs J, Haghikia A, Hilfiker-Kleiner D. Serelaxin treatment promotes adaptive hypertrophy but does not prevent heart failure in experimental peripartum cardiomyopathy. Cardiovasc Res 2017; 113:598-608. [PMID: 28453725 PMCID: PMC5412020 DOI: 10.1093/cvr/cvw245] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 10/03/2016] [Accepted: 12/01/2016] [Indexed: 01/20/2023] Open
Abstract
AIMS Peripartum cardiomyopathy (PPCM) is a systolic left ventricular dysfunction developing in the peripartum phase in previously healthy women. Relaxin-2 is a pregnancy hormone with potential beneficial effects in heart failure patients. We evaluated Relaxin-2 as a potential diagnostic marker and/or a therapeutic agent in PPCM. METHODS AND RESULTS In healthy peripartum women, serum Relaxin-2 levels (measured by ELISA in the second half of pregnancy) were elevated showing a decreasing trend in the first postpartum week and returned to non-pregnant levels thereafter. In PPCM patients diagnosed in the first postpartum week, serum Relaxin-2 levels were lower compared to healthy postpartum stage-matched controls. In PPCM patients diagnosed later (0.5-10 months postpartum) Relaxin-2 levels were in the range of non-pregnant controls and not different from healthy postpartum stage-matched controls. In mice, serum Relaxin-1 (functional equivalent of human Relaxin-2) was increased late in pregnancy and rapidly cleared in the first postpartum week. In mice with PPCM due to a cardiomyocyte-specific knockout of STAT3 (CKO) neither low nor high dose of recombinant Relaxin-2 (serelaxin, sRlx-LD: 30 µg/kg/day; sRlx-HD: 300 µg/kg/day) affected cardiac fibrosis, inflammation and heart failure but sRlx-HD increased capillary/cardiomyocyte ratio. sRlx-HD significantly increased heart/body weight ratio and cardiomyocyte cross-sectional area in postpartum CKO and wild-type mice without changing the foetal gene expression program (ANP or β-MHC). sRlx-HD augmented plasma Prolactin levels in both genotypes, which induced cardiac activation of STAT5. In vitro analyses showed that Prolactin induces cardiomyocyte hypertrophy via activation of STAT5. CONCLUSION Although Relaxin-2 levels seemed lower in PPCM patients diagnosed early postpartum, we observed a high pregnancy-related variance of serum Relaxin-2 levels peripartum making it unsuitable as a biomarker for this condition. Supplementation with sRlx may contribute to angiogenesis and compensatory hypertrophy in the diseased heart, but the effects are not sufficient to prevent heart failure in an experimental PPCM model.
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Affiliation(s)
- Justus Nonhoff
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Melanie Ricke-Hoch
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Mirco Mueller
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Britta Stapel
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Tobias Pfeffer
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Martina Kasten
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Constantin von Kaisenberg
- Department of Obstetrics and Gynecology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Johann Bauersachs
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Arash Haghikia
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| | - Denise Hilfiker-Kleiner
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
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22
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Stapel B, Kotsiari A, Scherr M, Hilfiker-Kleiner D, Bleich S, Frieling H, Kahl KG. Olanzapine and aripiprazole differentially affect glucose uptake and energy metabolism in human mononuclear blood cells. J Psychiatr Res 2017; 88:18-27. [PMID: 28073046 DOI: 10.1016/j.jpsychires.2016.12.012] [Citation(s) in RCA: 10] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Revised: 12/09/2016] [Accepted: 12/12/2016] [Indexed: 10/20/2022]
Abstract
The use of antipsychotics carries the risk of metabolic side effects, such as weight gain and new onset type-2 diabetes mellitus. The mechanisms of the observed metabolic alterations are not fully understood. We compared the effects of two atypical antipsychotics, one known to favor weight gain (olanzapine), the other not (aripiprazole), on glucose metabolism. Primary human peripheral blood mononuclear cells (PBMC) were isolated and stimulated with olanzapine or aripiprazole for 72 h. Cellular glucose uptake was analyzed in vitro by 18F-FDG uptake. Further measurements comprised mRNA expression of glucose transporter (GLUT) 1 and 3, GLUT1 protein expression, DNA methylation of GLUT1 promoter region, and proteins involved in downstream glucometabolic processes. We observed a 2-fold increase in glucose uptake after stimulation with aripiprazole. In contrast, olanzapine stimulation decreased glucose uptake by 40%, accompanied by downregulation of the cellular energy sensor AMP activated protein kinase (AMPK). GLUT1 protein expression increased, GLUT1 mRNA expression decreased, and GLUT1 promoter was hypermethylated with both antipsychotics. Pyruvat-dehydrogenase (PDH) complex activity decreased with olanzapine only. Our findings suggest that the atypical antipsychotics olanzapine and aripiprazole differentially affect energy metabolism in PBMC. The observed decrease in glucose uptake in olanzapine stimulated PBMC, accompanied by decreased PDH point to a worsening in cellular energy metabolism not compensated by AMKP upregulation. In contrast, aripiprazole stimulation lead to increased glucose uptake, while not affecting PDH complex expression. The observed differences may be involved in the different metabolic profiles observed in aripiprazole and olanzapine treated patients.
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Affiliation(s)
- Britta Stapel
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; Department of Cardiology and Angiology, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Alexandra Kotsiari
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | | | - Stefan Bleich
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Helge Frieling
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Kai G Kahl
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany.
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23
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Schanda J, Lee CW, Wohlan K, Müller-Kuller U, Kunkel H, Coco IQL, Stein S, Metz A, Koch J, Lausen J, Platzbecker U, Medyouf H, Gohlke H, Heuser M, Eder M, Grez M, Scherr M, Wichmann C. Suppression of RUNX1/ETO oncogenic activity by a small molecule inhibitor of tetramerization. Haematologica 2017; 102:e170-e174. [PMID: 28154087 DOI: 10.3324/haematol.2016.161570] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Julia Schanda
- Institute for Tumor Biology and Experimental Therapy, Georg-Speyer-Haus, Frankfurt, Germany
| | - Chun-Wei Lee
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Germany
| | - Katharina Wohlan
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Germany
| | - Uta Müller-Kuller
- Institute for Tumor Biology and Experimental Therapy, Georg-Speyer-Haus, Frankfurt, Germany.,German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Hana Kunkel
- Institute for Tumor Biology and Experimental Therapy, Georg-Speyer-Haus, Frankfurt, Germany
| | - Isabell Quagliano-Lo Coco
- Institute for Tumor Biology and Experimental Therapy, Georg-Speyer-Haus, Frankfurt, Germany.,German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Stefan Stein
- Institute for Tumor Biology and Experimental Therapy, Georg-Speyer-Haus, Frankfurt, Germany
| | - Alexander Metz
- Institute for Pharmaceutical and Medicinal Chemistry, Department of Mathematics and Natural Sciences, Heinrich Heine University Düsseldorf, Germany
| | - Joachim Koch
- Institute for Tumor Biology and Experimental Therapy, Georg-Speyer-Haus, Frankfurt, Germany
| | - Jörn Lausen
- Institute for Tumor Biology and Experimental Therapy, Georg-Speyer-Haus, Frankfurt, Germany
| | - Uwe Platzbecker
- Department of Hematology, Medical Clinic and Polyclinic I, University Hospital Carl Gustav Carus, Dresden, Germany
| | - Hind Medyouf
- Institute for Tumor Biology and Experimental Therapy, Georg-Speyer-Haus, Frankfurt, Germany
| | - Holger Gohlke
- Institute for Pharmaceutical and Medicinal Chemistry, Department of Mathematics and Natural Sciences, Heinrich Heine University Düsseldorf, Germany
| | - Michael Heuser
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Germany
| | - Matthias Eder
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Germany
| | - Manuel Grez
- Institute for Tumor Biology and Experimental Therapy, Georg-Speyer-Haus, Frankfurt, Germany
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Germany
| | - Christian Wichmann
- Institute for Tumor Biology and Experimental Therapy, Georg-Speyer-Haus, Frankfurt, Germany.,Department of Transfusion Medicine, Cell Therapeutics and Hemostaseology, Ludwig-Maximilian University Hospital, Munich, Germany
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24
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Zheng X, Halle S, Yu K, Mishra P, Scherr M, Pietzsch S, Willenzon S, Janssen A, Boelter J, Hilfiker-Kleiner D, Eder M, Förster R. Cardiomyocytes display low mitochondrial priming and are highly resistant toward cytotoxic T-cell killing. Eur J Immunol 2016; 46:1415-26. [PMID: 26970349 PMCID: PMC5071700 DOI: 10.1002/eji.201546080] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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: 09/18/2015] [Revised: 01/12/2016] [Accepted: 03/07/2016] [Indexed: 12/20/2022]
Abstract
Following heart transplantation, alloimmune responses can cause graft rejection by damaging donor vascular and parenchymal cells. However, it remains unclear whether cardiomyocytes are also directly killed by immune cells. Here, we used two‐photon microscopy to investigate how graft‐specific effector CD8+ T cells interact with cardiomyocytes in a mouse heart transplantation model. Surprisingly, we observed that CD8+ T cells are completely impaired in killing cardiomyocytes. Even after virus‐mediated preactivation, antigen‐specific CD8+ T cells largely fail to lyse these cells although both cell types engage in dynamic interactions. Furthermore, we established a two‐photon microscopy‐based assay using intact myocardium to determine the susceptibility of cardiomyocytes to undergo apoptosis. This feature, also known as mitochondrial priming reveals an unexpected weak predisposition of cardiomyocytes to undergo apoptosis in situ. These observations together with the early exhaustion phenotype of graft‐infiltrating specific T cells provide an explanation why cardiomyocytes are largely protected from direct CD8+ T‐cell‐mediated killing.
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Affiliation(s)
- Xiang Zheng
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Stephan Halle
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Kai Yu
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Pooja Mishra
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Stefan Pietzsch
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | | | - Anika Janssen
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Jasmin Boelter
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | | | - Matthias Eder
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Reinhold Förster
- Institute of Immunology, Hannover Medical School, Hannover, Germany
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25
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Lee CW, Wohlan K, Dallmann I, Förster R, Ganser A, Krueger A, Scherr M, Eder M, Koenecke C. miR-181a Expression in Donor T Cells Modulates Graft-versus-Host Disease after Allogeneic Bone Marrow Transplantation. J Immunol 2016; 196:3927-34. [PMID: 27009493 DOI: 10.4049/jimmunol.1502152] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 02/26/2016] [Indexed: 11/19/2022]
Abstract
Because miR-181a has been described to alter T cell activation, we hypothesized that manipulation of miR-181a expression in donor T cells may alter acute graft-versus-host disease (aGvHD) after allogeneic bone marrow transplantation (BMT). We therefore analyzed the impact of enhanced and reduced miR-181a expression in donor T cells on aGvHD induction by lentiviral gene transfer into primary T cells and using miR-181a/b-1(-/-) T cells, respectively. BMT-recipient mice receiving donor T cells with enhanced miR-181a expression showed no signs of aGvHD and survived for the time of follow-up, whereas T cells lacking miR-181a/b-1 accelerated aGvHD. In line with these data, analysis of donor T cells in blood, secondary lymphoid organs, and target organs of aGvHD after BMT showed significantly reduced numbers of miR-181a-transduced T cells, as compared with controls. In addition, expansion of activated T cells with enhanced miR-181a expression was reduced in vitro and in vivo. We further show that anti-apoptotic BCL-2 protein expression is reduced in murine and human T cells upon overexpression of miR-181a, suggesting that regulation of BCL-2-expression by miR-181a may contribute to altered alloreactivity of T cells in aGvHD. These data indicate that proteins regulated by miR-181a may be therapeutic targets for aGvHD prevention.
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Affiliation(s)
- Chun-Wei Lee
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, D-30625 Hannover, Germany; and Institute of Immunology, Hannover Medical School, D-30625 Hannover, Germany
| | - Katharina Wohlan
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, D-30625 Hannover, Germany; and
| | - Iris Dallmann
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, D-30625 Hannover, Germany; and
| | - Reinhold Förster
- Institute of Immunology, Hannover Medical School, D-30625 Hannover, Germany
| | - Arnold Ganser
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, D-30625 Hannover, Germany; and
| | - Andreas Krueger
- Institute of Immunology, Hannover Medical School, D-30625 Hannover, Germany
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, D-30625 Hannover, Germany; and
| | - Matthias Eder
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, D-30625 Hannover, Germany; and
| | - Christian Koenecke
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, D-30625 Hannover, Germany; and Institute of Immunology, Hannover Medical School, D-30625 Hannover, Germany
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26
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Venturini L, Stadler M, Manukjan G, Scherr M, Schlegelberger B, Steinemann D, Ganser A. The stem cell zinc finger 1 (SZF1)/ZNF589 protein has a human-specific evolutionary nucleotide DNA change and acts as a regulator of cell viability in the hematopoietic system. Exp Hematol 2015; 44:257-68. [PMID: 26738774 DOI: 10.1016/j.exphem.2015.12.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 12/15/2015] [Accepted: 12/19/2015] [Indexed: 01/19/2023]
Abstract
The stem cell zinc finger 1 (SZF1)/ZNF589 protein belongs to the large family of Krüppel-associated box domain-zinc finger (KRAB-ZNF) transcription factors, which are present only in higher vertebrates and epigenetically repress transcription by recruiting chromatin-modifying complexes to the promoter regions of their respective target genes. Although the distinct biological functions of most KRAB-ZNF proteins remain unknown, recent publications indicate their implication in fundamental processes, such as cell proliferation, apoptosis, differentiation, development, and tumorigenesis. SZF1/ZNF589 was first identified as a gene with SZF1-1 isoform specifically expressed in CD34(+) hematopoietic cells, strongly suggesting a role in epigenetic control of gene expression in hematopoietic stem/progenitor cells (HSPCs). However, the function of SZF1/ZNF589 in hematopoiesis has not yet been elucidated. Our study reveals SZF1/ZNF589 as a gene with a human-specific nucleotide DNA-change, conferring potential species-specific functional properties. Through shRNA-mediated loss-of-function experiments, we found that changes in expression of fundamental apoptosis-controlling genes are induced on SZF1/ZNF589 knockdown, resulting in inhibited growth of hematopoietic cell lines and decreased progenitor potential of primary human bone marrow CD34(+) cells. Moreover, we found that the SZF1/ZNF589 gene is differentially regulated during hypoxia in CD34(+) HSPCs in a cytokine-dependent manner, implicating its possible involvement in the maintenance of the hypoxic physiologic status of hematopoietic stem cells. Our results establish the role of SZF1/ZNF589 as a new functional regulator of the hematopoietic system.
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Affiliation(s)
- Letizia Venturini
- Department of Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany.
| | - Michael Stadler
- Department of Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Georgi Manukjan
- Institute of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | | | - Doris Steinemann
- Institute of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Arnold Ganser
- Department of Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
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27
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Scherr M. Beckentrauma – Urogenitale Verletzungen. ROFO-FORTSCHR RONTG 2015. [DOI: 10.1055/s-0035-1551430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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28
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Thierfelder K, Scherr M, Notohamiprodjo M, Weiß J, Dietrich O, Mueller-Lisse U, Pfeuffer J, Nikolaou K, Reiser M, Theisen D. Diffusionsgewichtete MRT der Prostata: Vorteile einer gezoomten EPI mit paralleler Sendetechnik. ROFO-FORTSCHR RONTG 2015. [DOI: 10.1055/s-0035-1551443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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29
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Ding J, Dirks WG, Ehrentraut S, Geffers R, MacLeod RAF, Nagel S, Pommerenke C, Romani J, Scherr M, Vaas LAI, Zaborski M, Drexler HG, Quentmeier H. BCL6--regulated by AhR/ARNT and wild-type MEF2B--drives expression of germinal center markers MYBL1 and LMO2. Haematologica 2015; 100:801-9. [PMID: 25769544 DOI: 10.3324/haematol.2014.120048] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 03/04/2015] [Indexed: 12/28/2022] Open
Abstract
Genetic heterogeneity is widespread in tumors, but poorly documented in cell lines. According to immunoglobulin hypermutation analysis, the diffuse large B-cell lymphoma cell line U-2932 comprises two subpopulations faithfully representing original tumor subclones. We set out to identify molecular causes underlying subclone-specific expression affecting 221 genes including surface markers and the germinal center oncogenes BCL6 and MYC. Genomic copy number variations explained 58/221 genes differentially expressed in the two U-2932 clones. Subclone-specific expression of the aryl-hydrocarbon receptor (AhR) and the resulting activity of the AhR/ARNT complex underlaid differential regulation of 11 genes including MEF2B. Knock-down and inhibitor experiments confirmed that AhR/ARNT regulates MEF2B, a key transcription factor for BCL6. AhR, MEF2B and BCL6 levels correlated not only in the U-2932 subclones but in the majority of 23 cell lines tested, indicting overexpression of AhR as a novel mechanism behind BCL6 diffuse large B-cell lymphoma. Enforced modulation of BCL6 affected 48/221 signature genes. Although BCL6 is known as a transcriptional repressor, 28 genes were up-regulated, including LMO2 and MYBL1 which, like BCL6, signify germinal center diffuse large B-cell lymphoma. Supporting the notion that BCL6 can induce gene expression, BCL6 and the majority of potential targets were co-regulated in a series of B-cell lines. In conclusion, genomic copy number aberrations, activation of AhR/ARNT, and overexpression of BCL6 are collectively responsible for differential expression of more than 100 genes in subclones of the U-2932 cell line. It is particularly interesting that BCL6 - regulated by AhR/ARNT and wild-type MEF2B - may drive expression of germinal center markers in diffuse large B-cell lymphoma.
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Affiliation(s)
- Jie Ding
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig
| | - Wilhelm G Dirks
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig
| | - Stefan Ehrentraut
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig
| | - Robert Geffers
- Helmholtz Centre for Infection Research, Genome Analysis Research Group, Braunschweig
| | - Roderick A F MacLeod
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig
| | - Stefan Nagel
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig
| | - Claudia Pommerenke
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig
| | - Julia Romani
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig
| | - Michaela Scherr
- Medical School Hannover, Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Germany
| | - Lea A I Vaas
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig
| | - Margarete Zaborski
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig
| | - Hans G Drexler
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig
| | - Hilmar Quentmeier
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig
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30
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Thol F, Scherr M, Kirchner A, Shahswar R, Battmer K, Kade S, Chaturvedi A, Koenecke C, Stadler M, Platzbecker U, Thiede C, Schroeder T, Kobbe G, Bug G, Ottmann O, Hofmann WK, Kröger N, Fiedler W, Schlenk R, Döhner K, Döhner H, Krauter J, Eder M, Ganser A, Heuser M. Clinical and functional implications of microRNA mutations in a cohort of 935 patients with myelodysplastic syndromes and acute myeloid leukemia. Haematologica 2014; 100:e122-4. [PMID: 25552704 DOI: 10.3324/haematol.2014.120345] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Felicitas Thol
- Department of Hematology, Hemostasis, Oncology and HSCT, Hannover Medical School, Hannover
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and HSCT, Hannover Medical School, Hannover
| | - Aylin Kirchner
- Department of Hematology, Hemostasis, Oncology and HSCT, Hannover Medical School, Hannover
| | - Rabia Shahswar
- Department of Hematology, Hemostasis, Oncology and HSCT, Hannover Medical School, Hannover
| | - Karin Battmer
- Department of Hematology, Hemostasis, Oncology and HSCT, Hannover Medical School, Hannover
| | - Sofia Kade
- Department of Hematology, Hemostasis, Oncology and HSCT, Hannover Medical School, Hannover
| | - Anuhar Chaturvedi
- Department of Hematology, Hemostasis, Oncology and HSCT, Hannover Medical School, Hannover
| | - Christian Koenecke
- Department of Hematology, Hemostasis, Oncology and HSCT, Hannover Medical School, Hannover
| | - Michael Stadler
- Department of Hematology, Hemostasis, Oncology and HSCT, Hannover Medical School, Hannover
| | - Uwe Platzbecker
- Medizinische Klinik und Poliklinik I, Universtitätsklinikum Carl Gustav Carus, Dresden
| | - Christian Thiede
- Medizinische Klinik und Poliklinik I, Universtitätsklinikum Carl Gustav Carus, Dresden
| | - Thomas Schroeder
- Klinik für Hämatologie, Onkologie und Klinische Immunologie, Heinreich Heine Universit¨at, Düsseldorf
| | - Guido Kobbe
- Klinik für Hämatologie, Onkologie und Klinische Immunologie, Heinreich Heine Universit¨at, Düsseldorf
| | - Gesine Bug
- Department of Medicine, Hematology/Oncology, University Hospital, Frankfurt
| | - Oliver Ottmann
- Department of Medicine, Hematology/Oncology, University Hospital, Frankfurt
| | | | - Nicolaus Kröger
- Department of Stem Cell Transplantation, University Medical Center Hamburg-Eppendorf, Hamburg
| | - Walter Fiedler
- Department of Medicine II, Oncological Center, Hubertus Wald University Cancer Center, University Hospital Hamburg-Eppendorf, Hamburg
| | | | | | | | - Jürgen Krauter
- Department of Hematology, Hemostasis, Oncology and HSCT, Hannover Medical School, Hannover Klinikum Braunschweig, Germany
| | - Matthias Eder
- Department of Hematology, Hemostasis, Oncology and HSCT, Hannover Medical School, Hannover
| | - Arnold Ganser
- Department of Hematology, Hemostasis, Oncology and HSCT, Hannover Medical School, Hannover
| | - Michael Heuser
- Department of Hematology, Hemostasis, Oncology and HSCT, Hannover Medical School, Hannover
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Scherr M, Battmer K, Ganser A, Eder M. Modulation of Gene Expression by Lentiviral-Mediated Delivery of Small Interfering RNA. Cell Cycle 2014. [DOI: 10.4161/cc.2.3.376] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Gorst I, Ricke-Hoch M, Erschow S, Scherr M, Hilfiker-Kleiner D. P92Regulatory and functional analyses of Neuraminidase-1 in inflammatory processes after myocardial ischemia/reperfusion. Cardiovasc Res 2014. [DOI: 10.1093/cvr/cvu082.34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Schaller-Schönitz M, Barzan D, Williamson AJK, Griffiths JR, Dallmann I, Battmer K, Ganser A, Whetton AD, Scherr M, Eder M. BCR-ABL affects STAT5A and STAT5B differentially. PLoS One 2014; 9:e97243. [PMID: 24836440 PMCID: PMC4023949 DOI: 10.1371/journal.pone.0097243] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [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: 11/22/2013] [Accepted: 04/16/2014] [Indexed: 11/21/2022] Open
Abstract
Signal transducers and activators of transcription (STATs) are latent cytoplasmic transcription factors linking extracellular signals to target gene transcription. Hematopoietic cells express two highly conserved STAT5-isoforms (STAT5A/STAT5B), and STAT5 is directly activated by JAK2 downstream of several cytokine receptors and the oncogenic BCR-ABL tyrosine kinase. Using an IL-3-dependent cell line with inducible BCR-ABL-expression we compared STAT5-activation by IL-3 and BCR-ABL in a STAT5-isoform specific manner. RNAi targeting of STAT5B strongly inhibits BCR-ABL-dependent cell proliferation, and STAT5B but not STAT5A is essential for BCL-XL-expression in the presence of BCR-ABL. Although BCR-ABL induces STAT5-tyrosine phosphorylation independent of JAK2-kinase activity, BCR-ABL is less efficient in inducing active STAT5A:STAT5B-heterodimerization than IL-3, leaving constitutive STAT5A and STAT5B-homodimerization unaffected. In comparison to IL-3, nuclear accumulation of a STAT5A-eGFP fusion protein is reduced by BCR-ABL, and BCR-ABL tyrosine kinase activity induces STAT5A-eGFP translocation to the cell membrane and co-localization with the IL-3 receptor. Furthermore, BCR-ABL-dependent phosphorylation of Y682 in STAT5A was detected by mass-spectrometry. Finally, RNAi targeting STAT5B but not STAT5A sensitizes human BCR-ABL-positive cell lines to imatinib-treatment. These data demonstrate differences between IL-3 and BCR-ABL-mediated STAT5-activation and isoform-specific effects, indicating therapeutic options for isoform-specific STAT5-inhibition in BCR-ABL-positive leukemia.
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Affiliation(s)
- Michael Schaller-Schönitz
- Hannover Medical School, Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover, Germany
| | - David Barzan
- Hannover Medical School, Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover, Germany
| | - Andrew J. K. Williamson
- Faculty of Medical and Human Sciences, Manchester Academic Health Science Centre, University of Manchester, Wolfson Molecular Imaging Centre, Manchester, United Kingdom
| | - John R. Griffiths
- Faculty of Medical and Human Sciences, Manchester Academic Health Science Centre, University of Manchester, Wolfson Molecular Imaging Centre, Manchester, United Kingdom
| | - Iris Dallmann
- Hannover Medical School, Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover, Germany
| | - Karin Battmer
- Hannover Medical School, Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover, Germany
| | - Arnold Ganser
- Hannover Medical School, Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover, Germany
| | - Anthony D. Whetton
- Faculty of Medical and Human Sciences, Manchester Academic Health Science Centre, University of Manchester, Wolfson Molecular Imaging Centre, Manchester, United Kingdom
| | - Michaela Scherr
- Hannover Medical School, Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover, Germany
| | - Matthias Eder
- Hannover Medical School, Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover, Germany
- * E-mail:
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Elder AK, Scherr M, Heidenreich O, Eder M. Bcl2 as a therapeutic target in BCR-ABL positive ALL. Klin Padiatr 2014. [DOI: 10.1055/s-0034-1374853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Scherr M, Elder A, Battmer K, Barzan D, Bomken S, Ricke-Hoch M, Schröder A, Venturini L, Blair HJ, Vormoor J, Ottmann O, Ganser A, Pich A, Hilfiker-Kleiner D, Heidenreich O, Eder M. Differential expression of miR-17~92 identifies BCL2 as a therapeutic target in BCR-ABL-positive B-lineage acute lymphoblastic leukemia. Leukemia 2014; 28:554-65. [PMID: 24280866 PMCID: PMC3948162 DOI: 10.1038/leu.2013.361] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [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: 11/14/2013] [Accepted: 11/19/2013] [Indexed: 12/16/2022]
Abstract
Despite advances in allogeneic stem cell transplantation, BCR-ABL-positive acute lymphoblastic leukaemia (ALL) remains a high-risk disease, necessitating the development of novel treatment strategies. As the known oncomir, miR-17~92, is regulated by BCR-ABL fusion in chronic myeloid leukaemia, we investigated its role in BCR-ABL translocated ALL. miR-17~92-encoded miRNAs were significantly less abundant in BCR-ABL-positive as compared to -negative ALL-cells and overexpression of miR-17~19b triggered apoptosis in a BCR-ABL-dependent manner. Stable isotope labelling of amino acids in culture (SILAC) followed by liquid chromatography and mass spectroscopy (LC-MS) identified several apoptosis-related proteins including Bcl2 as potential targets of miR-17~19b. We validated Bcl2 as a direct target of this miRNA cluster in mice and humans, and, similar to miR-17~19b overexpression, Bcl2-specific RNAi strongly induced apoptosis in BCR-ABL-positive cells. Furthermore, BCR-ABL-positive human ALL cell lines were more sensitive to pharmacological BCL2 inhibition than negative ones. Finally, in a xenograft model using patient-derived leukaemic blasts, real-time, in vivo imaging confirmed pharmacological inhibition of BCL2 as a new therapeutic strategy in BCR-ABL-positive ALL. These data demonstrate the role of miR-17~92 in regulation of apoptosis, and identify BCL2 as a therapeutic target of particular relevance in BCR-ABL-positive ALL.
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Affiliation(s)
- M Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - A Elder
- Newcastle Cancer Centre at the Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, UK
| | - K Battmer
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - D Barzan
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - S Bomken
- Newcastle Cancer Centre at the Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, UK
- Department of Paediatric and Adolescent Haematology and Oncology, Great North Children's Hospital, Newcastle upon Tyne, UK
| | - M Ricke-Hoch
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - A Schröder
- Department of Toxicology, Hannover Medical School, Hannover, Germany
| | - L Venturini
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - H J Blair
- Newcastle Cancer Centre at the Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, UK
| | - J Vormoor
- Newcastle Cancer Centre at the Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, UK
- Department of Paediatric and Adolescent Haematology and Oncology, Great North Children's Hospital, Newcastle upon Tyne, UK
| | - O Ottmann
- Department of Hematology/Oncology and Infectious Diseases, J.W. Goethe-University Hospital Frankfurt, Frankfurt, Germany
| | - A Ganser
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - A Pich
- Department of Toxicology, Hannover Medical School, Hannover, Germany
| | - D Hilfiker-Kleiner
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - O Heidenreich
- Newcastle Cancer Centre at the Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, UK
| | - M Eder
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
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Ricke-Hoch M, Bultmann I, Stapel B, Condorelli G, Rinas U, Sliwa K, Scherr M, Hilfiker-Kleiner D. Opposing roles of Akt and STAT3 in the protection of the maternal heart from peripartum stress. Cardiovasc Res 2014; 101:587-96. [PMID: 24448315 DOI: 10.1093/cvr/cvu010] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Peripartum cardiomyopathy (PPCM) is a pregnancy-associated cardiomyopathy in previously healthy women. Mice with a cardiomyocyte-restricted deletion of signal transducer and activator of transcription-3 (STAT3, CKO) develop PPCM. PI3K-Akt signalling is thought to promote cardiac hypertrophy and protection during pregnancy. We evaluated the role of activated Akt signalling in the maternal heart postpartum. METHODS AND RESULTS CKO mice were bred to mice harbouring an Akt transgene, specifically expressed in cardiomyocytes (CAkt(tg)) generating CKO; CAkt(tg), CAkt(tg), CKO, and wild-type sibling mice. CAkt(tg) and CKO;CAkt(tg) female mice developed PPCM with systolic dysfunction. Both genotypes displayed cardiac hypertrophy and lower capillary density, showed increased phosphorylation of p66 Src homology 2 domain containing protein and FoxO3A, and reduced expression of manganese superoxide dismutase as well as increased cathepsin D activity and increased miR-146a levels [indicative for generation of the anti-angiogenic 16 kDa prolactin (PRL)]. Cardiac inflammation and fibrosis was accelerated in CKO;CAkt(tg) and associated with high postpartum mortality. The PRL blocker, bromocriptine (BR), prevented heart failure and the decrease in capillary density in CKO;CAkt(tg) and CAkt(tg) mice. BR attenuated high mortality, up-regulation of CCL2, and cardiac inflammation as well as fibrosis in CKO;CAkt(tg). PRL infusion induced cardiac inflammation in CKO;CAkt(tg) independent of pregnancy. In neonatal rat cardiomyocytes, PRL and interferon γ (IFNγ) induced the expression of CCL2 via activation of Akt. CONCLUSION Postpartum Akt activation is detrimental for the peripartum heart as it lowers anti-oxidative defence and in combination with low STAT3 conditions, accelerate cardiac inflammation and fibrosis. PRL and its cleaved 16 kDa form are central for Akt-induced PPCM as indicated by the protection from the disease by PRL blockade.
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Affiliation(s)
- Melanie Ricke-Hoch
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg Str. 1, 30625 Hannover, Germany
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Mueck F, Michael L, Deak Z, Scherr M, Maxien D, Geyer L, Reiser M, Wirth S. Upgrade to lterative Image Reconstruction (lR) in MDCT lmaging: A Clinical Study for Detailed Parameter Optimization Beyond Vendor Recommendations Using the Adaptive Statistical lterative Reconstruction Environment (ASIR) Part2: The Chest. ROFO-FORTSCHR RONTG 2013; 185:644-54. [DOI: 10.1055/s-0033-1335152] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Scherr M. Akutes Abdomen - Notfälle an Nieren, ableitenden Harnwegen und männlichem Genitale. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1345879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Halkein J, Tabruyn SP, Ricke-Hoch M, Haghikia A, Nguyen NQN, Scherr M, Castermans K, Malvaux L, Lambert V, Thiry M, Sliwa K, Noel A, Martial JA, Hilfiker-Kleiner D, Struman I. MicroRNA-146a is a therapeutic target and biomarker for peripartum cardiomyopathy. J Clin Invest 2013; 123:2143-54. [PMID: 23619365 DOI: 10.1172/jci64365] [Citation(s) in RCA: 341] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Accepted: 02/07/2013] [Indexed: 12/11/2022] Open
Abstract
Peripartum cardiomyopathy (PPCM) is a life-threatening pregnancy-associated cardiomyopathy in previously healthy women. Although PPCM is driven in part by the 16-kDa N-terminal prolactin fragment (16K PRL), the underlying molecular mechanisms are poorly understood. We found that 16K PRL induced microRNA-146a (miR-146a) expression in ECs, which attenuated angiogenesis through downregulation of NRAS. 16K PRL stimulated the release of miR-146a-loaded exosomes from ECs. The exosomes were absorbed by cardiomyocytes, increasing miR-146a levels, which resulted in a subsequent decrease in metabolic activity and decreased expression of Erbb4, Notch1, and Irak1. Mice with cardiomyocyte-restricted Stat3 knockout (CKO mice) exhibited a PPCM-like phenotype and displayed increased cardiac miR-146a expression with coincident downregulation of Erbb4, Nras, Notch1, and Irak1. Blocking miR-146a with locked nucleic acids or antago-miRs attenuated PPCM in CKO mice without interrupting full-length prolactin signaling, as indicated by normal nursing activities. Finally, miR-146a was elevated in the plasma and hearts of PPCM patients, but not in patients with dilated cardiomyopathy. These results demonstrate that miR-146a is a downstream-mediator of 16K PRL that could potentially serve as a biomarker and therapeutic target for PPCM.
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Affiliation(s)
- Julie Halkein
- Unit of Molecular Biology and Genetic Engineering, GIGA, University of Liège, Liège, Belgium
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Quentmeier H, Amini RM, Berglund M, Dirks WG, Ehrentraut S, Geffers R, Macleod RAF, Nagel S, Romani J, Scherr M, Zaborski M, Drexler HG. U-2932: two clones in one cell line, a tool for the study of clonal evolution. Leukemia 2012; 27:1155-64. [PMID: 23295736 DOI: 10.1038/leu.2012.358] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Genetic heterogeneity is common in tumors, explicable by the development of subclones with distinct genetic and epigenetic alterations. We describe an in vitro model for cancer heterogeneity, comprising the diffuse large B-cell lymphoma cell line U-2932 which expresses two sets of cell surface markers representing twin populations flow-sorted by CD20 vs CD38 expression. U-2932 populations were traced to subclones of the original tumor with clone-specific immunoglobulin IgVH4-39 hypermutation patterns. BCL6 was overexpressed in one subpopulation (R1), MYC in the other (R2), both clones overexpressed BCL2. According to the combined results of immunoglobulin hypermutation and cytogenetic analysis, R1 and R2 derive from a mother clone with genomic BCL2 amplification, which acquired secondary rearrangements leading to the overexpression of BCL6 (R1) or MYC (R2). Some 200 genes were differentially expressed in R1/R2 microarrays including transcriptional targets of the aberrantly expressed oncogenes. Other genes were regulated by epigenetic means as shown by DNA methylation analysis. Ectopic expression of BCL6 in R2 variously modulated new candidate target genes, confirming dual silencing and activating functions. In summary, stable retention of genetically distinct subclones in U-2932 models tumor heterogeneity in vitro permitting functional analysis of oncogenes against a syngenic background.
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Affiliation(s)
- H Quentmeier
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany.
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Elschami M, Scherr M, Philippens B, Gerardy-Schahn R. Reduction of STAT3 expression induces mitochondrial dysfunction and autophagy in cardiac HL-1 cells. Eur J Cell Biol 2012; 92:21-9. [PMID: 23102833 DOI: 10.1016/j.ejcb.2012.09.002] [Citation(s) in RCA: 28] [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] [Received: 04/17/2012] [Revised: 09/18/2012] [Accepted: 09/20/2012] [Indexed: 10/27/2022] Open
Abstract
Signal transducer and activator of transcription 3 (STAT3) is an important mediator of cardiac survival pathways. Reduced levels of STAT3 in patients with end-stage heart failure suggest a clinical relevance of STAT3 deficiency for cardiac disease. The recent identification of STAT3 as a mitochondrial protein which is important for full activity of mitochondrial complex I has opened a new field for the investigation of how STAT3 functions in cardioprotection. The goal of this study was to establish a cell culture model with a reduced STAT3 expression, and to use this model for the investigation of mitochondrial and mitochondrial-associated functions under STAT3 deficiency. In the murine cardiomyogenic cell line HL-1, the expression of STAT3 was silenced by lentiviral transduction with anti-STAT3 shRNA (STAT3 KD cells). STAT3 mRNA and protein levels were significantly reduced in HL-1 STAT3 KD cells compared to HL-1 cells transduced with a control shRNA. Spectrophotometric and polarographic assays with mitochondrial enriched fractions and intact cells showed reduced activities of respiratory chain complexes I, II, III and IV in HL-1 STAT3 KD cells. At ultrastructural level, a severe damage of mitochondrial integrity was observed, combined with a significant increase in autophagolysosomes in STAT3-deficient HL-1 cells. Our results demonstrate that the HL-1 STAT3 KD cell line is a good model to study cellular consequences of STAT3 deficiency. Moreover, this is the first study to show that STAT3 deficiency leads to a disruption of mitochondrial ultrastructure and increased autophagy.
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Affiliation(s)
- Myriam Elschami
- Institute for Cellular Chemistry, Hannover Medical School, Carl-Neubergstr. 1, D-30625 Hannover, Germany.
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Scherr M, Pfluger T. PET/CT des Urogenitaltraktes - Neue Marker, Neue Erkenntnisse? ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1310962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Hoch M, Fischer P, Stapel B, Missol-Kolka E, Sekkali B, Scherr M, Favret F, Braun T, Eder M, Schuster-Gossler K, Gossler A, Hilfiker A, Balligand JL, Drexler H, Hilfiker-Kleiner D. Erythropoietin preserves the endothelial differentiation capacity of cardiac progenitor cells and reduces heart failure during anticancer therapies. Cell Stem Cell 2012; 9:131-43. [PMID: 21816364 DOI: 10.1016/j.stem.2011.07.001] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2010] [Revised: 05/31/2011] [Accepted: 07/05/2011] [Indexed: 11/17/2022]
Abstract
Anticancer therapies, such as targeting of STAT3 or the use of anthracyclins (doxorubicin), can induce cardiomyopathy. In mice prone to developing heart failure as a result of reduced cardiac STAT3 expression (cardiomyocyte-restricted deficiency of STAT3) or treatment with doxorubicin, we observed impaired endothelial differentiation capacity of Sca-1(+) cardiac progenitor cells (CPCs) in conjunction with attenuated CCL2/CCR2 activation. Mice in both models also displayed reduced erythropoietin (EPO) levels in the cardiac microenvironment. EPO binds to CPCs and seems to be responsible for maintaining an active CCL2/CCR2 system. Supplementation with the EPO derivative CERA in a hematocrit-inactive low dose was sufficient to upregulate CCL2, restore endothelial differentiation of CPCs, and preserve the cardiac microvasculature and cardiac function in both mouse models. Thus, low-dose EPO treatment could potentially be exploited as a therapeutic strategy to reduce the risk of heart failure in certain treatment regimens.
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Affiliation(s)
- Melanie Hoch
- Department of Cardiology and Angiology, Medical School Hannover, 30625 Hannover, Germany
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Jagielska J, Kapopara PR, Salguero G, Scherr M, Schütt H, Grote K, Schieffer B, Bavendiek U. Interleukin-1 assembles a proangiogenic signaling module consisting of caveolin-1, tumor necrosis factor receptor-associated factor 6, p38-mitogen-activated protein kinase (MAPK), and MAPK-activated protein kinase 2 in endothelial cells. Arterioscler Thromb Vasc Biol 2012; 32:1280-8. [PMID: 22345171 DOI: 10.1161/atvbaha.111.243477] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
OBJECTIVE Interleukin-1β (IL-1β) is a major cytokine linking inflammation and angiogenesis in pathological vascular processes, such as atherosclerosis and tumor neoangiogenesis. However, signaling pathways mediating IL-1β-induced proangiogenic processes in endothelial cells (ECs) have barely been elucidated yet. Therefore, the present study investigated IL-1β-induced proangiogenic signaling in ECs. METHODS AND RESULTS IL-1β potently induced tube formation and migration of ECs. This was associated with and dependent on activation of p38-mitogen-activated protein kinase (MAPK) and MAPK-activated protein kinase 2 (MK2) as determined by pharmacological inhibition and gene silencing. Furthermore, silencing of the adaptor protein tumor necrosis factor receptor-associated factor 6 (TRAF6) (lentiviral short hairpin RNA) inhibited these IL-1β-induced processes. Moreover, IL-1β promoted translocation of TRAF6 to insoluble cellular fractions (containing membrane rafts/caveolae) and interaction of TRAF6 with caveolin-1. Accordingly, cellular cholesterol depletion (cyclodextrin) and silencing of caveolin-1 (small interfering RNA) inhibited IL-1β-induced activation of p38-MAPK and MK2, as well as IL-1β-induced tube formation and migration. Finally, silencing of TRAF6 and MK2 deficiency inhibited IL-1β-induced microvessel outgrowth in murine aortic rings ex vivo, and deficiency of MK2 or caveolin-1 significantly reduced IL-1β-induced angiogenesis in mice in vivo (Matrigel plug assay). CONCLUSIONS IL-1β assembles a proangiogenic signaling module consisting of caveolin-1, TRAF6, p38-MAPK, and MK2 in ECs, representing a potential target to intervene into angiogenesis-dependent processes and diseases.
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Affiliation(s)
- Joanna Jagielska
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
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Mueck F, Körner M, Scherr M, Geyer L, Deak Z, Linsenmaier U, Reiser M, Wirth S. Upgrade to Iterative Image Reconstruction (IR) in Abdominal MDCT Imaging: A Clinical Study for Detailed Parameter Optimization Beyond Vendor Recommendations Using the Adaptive Statistical Iterative Reconstruction Environment (ASIR). ROFO-FORTSCHR RONTG 2011; 184:229-38. [PMID: 22198835 DOI: 10.1055/s-0031-1282032] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- F. Mueck
- Institut für klinische Radiologie, Ludwig-Maximilians-Universität München
| | - M. Körner
- Institut für klinische Radiologie, Ludwig-Maximilians-Universität München
| | - M. Scherr
- Institut für klinische Radiologie, Ludwig-Maximilians-Universität München
| | - L. Geyer
- Institut für klinische Radiologie, Ludwig-Maximilians-Universität München
| | - Z. Deak
- Institut für klinische Radiologie, Ludwig-Maximilians-Universität München
| | - U. Linsenmaier
- Institut für klinische Radiologie, Ludwig-Maximilians-Universität München
| | - M. Reiser
- Institut für klinische Radiologie, Ludwig-Maximilians-Universität München
| | - S. Wirth
- Institut für klinische Radiologie, Ludwig-Maximilians-Universität München
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Baru AM, Krishnaswamy JK, Rathinasamy A, Scherr M, Eder M, Behrens GMN. Dendritic cells derived from HOXB4-immortalized hematopoietic bone marrow cells. Exp Biol Med (Maywood) 2011; 236:1291-7. [PMID: 21987830 DOI: 10.1258/ebm.2011.011140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Dendritic cells (DCs) are essential for the generation and modulation of cell-mediated adaptive immunity against infections. DC-based vaccination involves transplantation of ex vivo-generated DCs loaded with antigen in vitro, but remains limited by the number of autologous or allogeneic cells. While in vitro expansion and differentiation of hematopoietic stem cells (HSCs) into DCs seems to be the most viable alternative to overcome this problem, the complexity of HSC expansion in vitro has posed significant limitations for clinical application. We immortalized lineage-depleted murine hematopoietic bone marrow (lin(-)BM) cells with HOXB4, and differentiated them into CD11c(+)MHCII(+) DCs. These cells showed the typical DC phenotype and upregulated surface expression of co-stimulatory molecules on stimulation with various toll-like receptor ligands. These DCs efficiently presented exogenous antigen to T-cells via major histocompatibility complex (MHC) I and II and viral antigen on infection. Finally, they showed migratory capacity and were able to generate antigen-specific primed T-cells in vivo. In summary, we provide evidence that HOXB4-transduced lin(-)BM cells can serve as a viable means of generating fully functional DCs for scientific and therapeutic applications.
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Affiliation(s)
- Abdul Mannan Baru
- Department for Clinical Immunology and Rheumatology, Hannover Medical School, Carl-Neuberg-Strasse 1, Hannover, Germany
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Morgan MA, Onono FO, Spielmann HP, Subramanian T, Scherr M, Venturini L, Dallmann I, Ganser A, Reuter CWM. Modulation of anthracycline-induced cytotoxicity by targeting the prenylated proteome in myeloid leukemia cells. J Mol Med (Berl) 2011; 90:149-61. [PMID: 21915711 DOI: 10.1007/s00109-011-0814-7] [Citation(s) in RCA: 13] [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: 03/03/2011] [Revised: 08/14/2011] [Accepted: 08/25/2011] [Indexed: 12/13/2022]
Abstract
Deregulation of Ras/ERK signaling in myeloid leukemias makes this pathway an interesting target for drug development. Myeloid leukemia cell lines were screened for idarubicin-induced apoptosis, cell-cycle progression, cell-cycle-dependent MAP kinase kinase (MEK-1/2) activation, and Top2 expression. Cell-cycle-dependent activation of MEK/ERK signaling was blocked using farnesyltransferase inhibitor (FTI) BMS-214,662 and dual prenyltransferase inhibitor (DPI) L-778,123 to disrupt Ras signaling. Idarubicin caused a G2/M cell-cycle arrest characterized by elevated diphosphorylated MEK-1/2 and Top2α expression levels. The FTI/DPIs elicited distinct effects on Ras signaling, protein prenylation, cell cycling and apoptosis. Combining these FTI/DPIs with idarubicin synergistically inhibited proliferation of leukemia cell lines, but the L-778,123+idarubicin combination exhibited synergistic growth inhibition over a greater range of drug concentrations. Interestingly, combined FTI/DPI treatment synergistically inhibited cell proliferation, induced apoptosis and nearly completely blocked protein prenylation. Inhibition of K-Ras expression by RNA interference or blockade of its post-translational prenylation led to increased BMS-214,662-induced apoptosis. Our results suggest that nearly complete inhibition of protein prenylation using an FTI + DPI combination is the most effective method to induce apoptosis and to block anthracycline-induced activation of ERK signaling.
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Affiliation(s)
- Michael A Morgan
- Department of Hematology, Hannover Medical School, Carl-Neuberg-Str. 1, D-30625, Hannover, Germany
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Shehadeh LA, Sharma S, Wei J, Pessanha M, Rodrigues C, Yuan H, Scherr M, Duerr R, Liu J, Tsinoremas N, Bishopric N. MICRORNA-20A RESTORES CARDIAC FUNCTION IN P300 HYPERTROPHIC HEARTS BY TARGETING P300 AND P300-DRIVEN ANGIOGENIC PROGRAM IN CARDIAC MYOCYTES AND CARDIAC PROGENITOR CELLS. J Am Coll Cardiol 2011. [DOI: 10.1016/s0735-1097(11)62047-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Scherr M, Grimm J, Ziegeler E, Uhl M, Reiser MF, Wirth S. Computertomographie (CT) zur Identifikation von Drogenpäckchen - Evaluation von dosisreduzierten Protokollen zur Untersuchung von Bodypackern anhand eines Schweinemodells. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Nagel S, Venturini L, Przybylski GK, Grabarczyk P, Schneider B, Meyer C, Kaufmann M, Schmidt CA, Scherr M, Drexler HG, Macleod RAF. Activation of Paired-homeobox gene PITX1 by del(5)(q31) in T-cell acute lymphoblastic leukemia. Leuk Lymphoma 2011; 52:1348-59. [PMID: 21425961 DOI: 10.3109/10428194.2011.566391] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In T-cell acute lymphoblasic leukemia (T-ALL), neoplastic chromosomal rearrangements are known to deregulate members of the homeobox gene families NKL and HOXA. Here, analysis of T-ALL cell lines and primary cells identified aberrant expression of a third homeobox gene group, the Paired (PRD) class. LOUCY cells revealed chromosomal deletion at 5q31, which targets the downstream regulatory region of the PRD homeobox gene PITX1, removing a STAT1 binding site. STAT1 mediates repressive interleukin 2 (IL2)-STAT1 signaling, implicating IL2 pathway avoidance as a possible activation mechanism. Among primary T-ALL samples, 2/22 (9%) aberrantly expressed PITX1, highlighting the importance of this gene. Forced expression of PITX1 in JURKAT cells and subsequent target gene analysis prompted deregulation of genes involved in T-cell development including HES1, JUN, NKX3-1, RUNX1, RUNX2, and TRIB2. Taken together, our data show leukemic activation of PITX1, a novice PRD-class homeobox gene in a subset of early-staged T-ALL, which may promote leukemogenesis by inhibiting T-cell development.
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Affiliation(s)
- Stefan Nagel
- Department of Human and Animal Cell Lines, DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany.
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