1
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Zhang C, Cui X, Liu Y, Wang F, Signer R, Nattamai K, Zhou D, Zheng Y, Geiger H, Wan F, Liang Y. Latexin deletion protects against radiation-induced hematopoietic damages via selective activation of Bcl-2 prosurvival pathway. Haematologica 2023; 108:3464-3470. [PMID: 37345464 PMCID: PMC10690908 DOI: 10.3324/haematol.2022.282028] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 09/08/2022] [Accepted: 06/15/2023] [Indexed: 06/23/2023] Open
Abstract
Not available.
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Affiliation(s)
| | | | - Yi Liu
- Department of Physiology, University of Kentucky, Lexington, KY
| | - Fang Wang
- Department of Toxicology and Cancer Biology
| | - Robert Signer
- Division of Regenerative Medicine, Department of Medicine, Moores Cancer Center, University of California San Diego, La Jolla, CA
| | - Kapana Nattamai
- Experimental Hematology and Cancer Biology, Cincinnati Children Hospital Medical Center, University of Cincinnati, OH
| | - Daohong Zhou
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center, San Antonio, TX
| | - Yi Zheng
- Experimental Hematology and Cancer Biology, Cincinnati Children Hospital Medical Center, University of Cincinnati, OH
| | - Hartmut Geiger
- Institute of Molecular Medicine, Ulm University, Meyerhofstrasse, Ulm
| | - Fengyi Wan
- Department of Biochemistry and Molecular Biology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD
| | - Ying Liang
- Department of Toxicology and Cancer Biology.
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2
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Scharffetter-Kochanek K, Wang Y, Makrantonaki E, Crisan D, Wlaschek M, Geiger H, Maity P. [Skin aging-cellular senescence : What is the future?]. Dermatologie (Heidelb) 2023; 74:645-656. [PMID: 37638987 DOI: 10.1007/s00105-023-05201-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/04/2023] [Indexed: 08/29/2023]
Abstract
BACKGROUND Cellular senescence is the main cause of skin and organ aging and is associated with a wide range of aging-related diseases. OBJECTIVES To understand which senolytics, senomorphics, and cell-based therapies have been developed to alleviate and even rejuvenate skin aging and reduce cellular senescence. METHODS Basic literature for the mode of action of senolytics and senomorphics and their clinical perspectives in daily routine are discussed. RESULTS Various causes lead to mitochondrial dysfunction and the activation of pro-aging signaling pathways, which eventually lead to cellular senescence with degradation of structural proteins of the dermal connective tissue and severe suppression of regenerative stem cell niches of the skin. CONCLUSIONS Depletion of senescent cells suppress skin aging and enforce rejuvenation of skin and other organs and their function. The removal of senescent cells by cells of the native immune system is severely disturbed during aging. Selected senolytics and senomorphics are approved and are already on the market.
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Affiliation(s)
- Karin Scharffetter-Kochanek
- Klinik für Dermatologie und Allergologie, Universitätsklinikum Ulm, Albert-Einstein-Allee 23, 89081, Ulm, Deutschland.
- Labor für experimentelle Dermatologie der Klinik für Dermatologie und Allergologie, Universität Ulm, Ulm, Deutschland.
- Arc-Aging Research Center, Universität Ulm, Ulm, Deutschland.
| | - Yongfang Wang
- Klinik für Dermatologie und Allergologie, Universitätsklinikum Ulm, Albert-Einstein-Allee 23, 89081, Ulm, Deutschland
- Labor für experimentelle Dermatologie der Klinik für Dermatologie und Allergologie, Universität Ulm, Ulm, Deutschland
| | - Evgenia Makrantonaki
- Labor für experimentelle Dermatologie der Klinik für Dermatologie und Allergologie, Universität Ulm, Ulm, Deutschland
- Derma Zentrum Wildeshausen, Wildeshausen, Deutschland
| | - Diana Crisan
- Klinik für Dermatologie und Allergologie, Universitätsklinikum Ulm, Albert-Einstein-Allee 23, 89081, Ulm, Deutschland
- Labor für experimentelle Dermatologie der Klinik für Dermatologie und Allergologie, Universität Ulm, Ulm, Deutschland
| | - Meinhard Wlaschek
- Klinik für Dermatologie und Allergologie, Universitätsklinikum Ulm, Albert-Einstein-Allee 23, 89081, Ulm, Deutschland
- Labor für experimentelle Dermatologie der Klinik für Dermatologie und Allergologie, Universität Ulm, Ulm, Deutschland
- Arc-Aging Research Center, Universität Ulm, Ulm, Deutschland
| | - Hartmut Geiger
- Arc-Aging Research Center, Universität Ulm, Ulm, Deutschland
- Institut für Molekulare Medizin, Universität Ulm, Ulm, Deutschland
| | - Pallab Maity
- Klinik für Dermatologie und Allergologie, Universitätsklinikum Ulm, Albert-Einstein-Allee 23, 89081, Ulm, Deutschland
- Labor für experimentelle Dermatologie der Klinik für Dermatologie und Allergologie, Universität Ulm, Ulm, Deutschland
- Arc-Aging Research Center, Universität Ulm, Ulm, Deutschland
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3
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Girotra M, Chiang YH, Charmoy M, Ginefra P, Hope HC, Bataclan C, Yu YR, Schyrr F, Franco F, Geiger H, Cherix S, Ho PC, Naveiras O, Auwerx J, Held W, Vannini N. Induction of mitochondrial recycling reverts age-associated decline of the hematopoietic and immune systems. Nat Aging 2023; 3:1057-1066. [PMID: 37653255 DOI: 10.1038/s43587-023-00473-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 07/24/2023] [Indexed: 09/02/2023]
Abstract
Aging compromises hematopoietic and immune system functions, making older adults especially susceptible to hematopoietic failure, infections and tumor development, and thus representing an important medical target for a broad range of diseases. During aging, hematopoietic stem cells (HSCs) lose their blood reconstitution capability and commit preferentially toward the myeloid lineage (myeloid bias)1,2. These processes are accompanied by an aberrant accumulation of mitochondria in HSCs3. The administration of the mitochondrial modulator urolithin A corrects mitochondrial function in HSCs and completely restores the blood reconstitution capability of 'old' HSCs. Moreover, urolithin A-supplemented food restores lymphoid compartments, boosts HSC function and improves the immune response against viral infection in old mice. Altogether our results demonstrate that boosting mitochondrial recycling reverts the aging phenotype in the hematopoietic and immune systems.
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Affiliation(s)
- Mukul Girotra
- Department of Oncology, Ludwig Institute for Cancer Research, University of Lausanne, Epalinges, Switzerland
| | - Yi-Hsuan Chiang
- Department of Oncology, Ludwig Institute for Cancer Research, University of Lausanne, Epalinges, Switzerland
| | - Melanie Charmoy
- Department of Oncology, University of Lausanne, Epalinges, Switzerland
| | - Pierpaolo Ginefra
- Department of Oncology, Ludwig Institute for Cancer Research, University of Lausanne, Epalinges, Switzerland
| | - Helen Carrasco Hope
- Department of Oncology, Ludwig Institute for Cancer Research, University of Lausanne, Epalinges, Switzerland
| | - Charles Bataclan
- Laboratory of Regenerative Hematopoiesis, Department of Biomedical Sciences, University of Lausanne and ISREC, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Yi-Ru Yu
- Department of Oncology, Ludwig Institute for Cancer Research, University of Lausanne, Epalinges, Switzerland
| | - Frederica Schyrr
- Laboratory of Regenerative Hematopoiesis, Department of Biomedical Sciences, University of Lausanne and ISREC, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Fabien Franco
- Department of Oncology, Ludwig Institute for Cancer Research, University of Lausanne, Epalinges, Switzerland
| | - Hartmut Geiger
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Stephane Cherix
- Orthopedic and Traumatology Service, Lausanne University Hospital, Lausanne, Switzerland
| | - Ping-Chih Ho
- Department of Oncology, Ludwig Institute for Cancer Research, University of Lausanne, Epalinges, Switzerland
| | - Olaia Naveiras
- Laboratory of Regenerative Hematopoiesis, Department of Biomedical Sciences, University of Lausanne and ISREC, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
- Hematology Service, Department of Oncology, Lausanne University Hospital, Lausanne, Switzerland
| | - Johan Auwerx
- Laboratory of Integrative and Systems Physiology, Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Werner Held
- Department of Oncology, University of Lausanne, Epalinges, Switzerland
| | - Nicola Vannini
- Department of Oncology, Ludwig Institute for Cancer Research, University of Lausanne, Epalinges, Switzerland.
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4
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Kumar S, Vassallo JD, Nattamai KJ, Hassan A, Karns R, Vollmer A, Soller K, Sakk V, Sacma M, Nemkov T, D'Alessandro A, Geiger H. pH regulates hematopoietic stem cell potential via polyamines. EMBO Rep 2023; 24:e55373. [PMID: 36943011 PMCID: PMC10157373 DOI: 10.15252/embr.202255373] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 02/21/2023] [Accepted: 03/03/2023] [Indexed: 03/23/2023] Open
Abstract
Upon ex vivo culture, hematopoietic stem cells (HSCs) quickly lose potential and differentiate into progenitors. The identification of culture conditions that maintain the potential of HSCs ex vivo is therefore of high clinical interest. Here, we demonstrate that the potential of murine and human HSCs is maintained when cultivated for 2 days ex vivo at a pH of 6.9, in contrast to cultivation at the commonly used pH of 7.4. When cultivated at a pH of 6.9, HSCs remain smaller, less metabolically active, less proliferative and show enhanced reconstitution ability upon transplantation compared to HSC cultivated at pH 7.4. HSCs kept at pH 6.9 show an attenuated polyamine pathway. Pharmacological inhibition of the polyamine pathway in HSCs cultivated at pH 7.4 with DFMO mimics phenotypes and potential of HSCs cultivated at pH 6.9. Ex vivo exposure to a pH of 6.9 is therefore a positive regulator of HSC function by reducing polyamines. These findings might improve HSC short-term cultivation protocols for transplantation and gene therapy interventions.
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Affiliation(s)
- Sachin Kumar
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Research Foundation, Cincinnati, OH, USA
- Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow, India
| | - Jeffrey D Vassallo
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Research Foundation, Cincinnati, OH, USA
| | - Kalpana J Nattamai
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Research Foundation, Cincinnati, OH, USA
| | - Aishlin Hassan
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Research Foundation, Cincinnati, OH, USA
| | - Rebekah Karns
- Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, OH, USA
| | | | - Karin Soller
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Vadim Sakk
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Mehmet Sacma
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Travis Nemkov
- University of Colorado Denver - Anschutz Medical Campus, Aurora, CO, USA
| | | | - Hartmut Geiger
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
- Aging Research Center, Ulm University, Ulm, Germany
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5
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Montserrat-Vazquez S, Ali NJ, Matteini F, Lozano J, Zhaowei T, Mejia-Ramirez E, Marka G, Vollmer A, Soller K, Sacma M, Sakk V, Mularoni L, Mallm JP, Plass M, Zheng Y, Geiger H, Florian MC. Transplanting rejuvenated blood stem cells extends lifespan of aged immunocompromised mice. NPJ Regen Med 2022; 7:78. [PMID: 36581635 PMCID: PMC9800381 DOI: 10.1038/s41536-022-00275-y] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 12/16/2022] [Indexed: 12/30/2022] Open
Abstract
One goal of regenerative medicine is to rejuvenate tissues and extend lifespan by restoring the function of endogenous aged stem cells. However, evidence that somatic stem cells can be targeted in vivo to extend lifespan is still lacking. Here, we demonstrate that after a short systemic treatment with a specific inhibitor of the small RhoGTPase Cdc42 (CASIN), transplanting aged hematopoietic stem cells (HSCs) from treated mice is sufficient to extend the healthspan and lifespan of aged immunocompromised mice without additional treatment. In detail, we show that systemic CASIN treatment improves strength and endurance of aged mice by increasing the myogenic regenerative potential of aged skeletal muscle stem cells. Further, we show that CASIN modifies niche localization and H4K16ac polarity of HSCs in vivo. Single-cell profiling reveals changes in HSC transcriptome, which underlie enhanced lymphoid and regenerative capacity in serial transplantation assays. Overall, we provide proof-of-concept evidence that a short systemic treatment to decrease Cdc42 activity improves the regenerative capacity of different endogenous aged stem cells in vivo, and that rejuvenated HSCs exert a broad systemic effect sufficient to extend murine health- and lifespan.
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Affiliation(s)
- Sara Montserrat-Vazquez
- grid.417656.7Stem Cell Aging Group, Regenerative Medicine Program, The Bellvitge Institute for Biomedical Research (IDIBELL), L’Hospitalet de Llobregat, Barcelona, Spain ,grid.417656.7Program for advancing the Clinical Translation of Regenerative Medicine of Catalonia, P-CMR[C], L’Hospitalet de Llobregat, Barcelona, Spain
| | - Noelle J. Ali
- grid.6582.90000 0004 1936 9748Institute of Molecular Medicine, University of Ulm, Ulm, Germany
| | - Francesca Matteini
- grid.417656.7Stem Cell Aging Group, Regenerative Medicine Program, The Bellvitge Institute for Biomedical Research (IDIBELL), L’Hospitalet de Llobregat, Barcelona, Spain ,grid.417656.7Program for advancing the Clinical Translation of Regenerative Medicine of Catalonia, P-CMR[C], L’Hospitalet de Llobregat, Barcelona, Spain
| | - Javier Lozano
- grid.417656.7Stem Cell Aging Group, Regenerative Medicine Program, The Bellvitge Institute for Biomedical Research (IDIBELL), L’Hospitalet de Llobregat, Barcelona, Spain ,grid.417656.7Program for advancing the Clinical Translation of Regenerative Medicine of Catalonia, P-CMR[C], L’Hospitalet de Llobregat, Barcelona, Spain
| | - Tu Zhaowei
- grid.239573.90000 0000 9025 8099Division of Experimental Hematology and Cancer Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH USA
| | - Eva Mejia-Ramirez
- grid.417656.7Stem Cell Aging Group, Regenerative Medicine Program, The Bellvitge Institute for Biomedical Research (IDIBELL), L’Hospitalet de Llobregat, Barcelona, Spain ,grid.417656.7Program for advancing the Clinical Translation of Regenerative Medicine of Catalonia, P-CMR[C], L’Hospitalet de Llobregat, Barcelona, Spain ,grid.512890.7Center for Networked Biomedical Research on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Gina Marka
- grid.6582.90000 0004 1936 9748Institute of Molecular Medicine, University of Ulm, Ulm, Germany
| | - Angelika Vollmer
- grid.6582.90000 0004 1936 9748Institute of Molecular Medicine, University of Ulm, Ulm, Germany
| | - Karin Soller
- grid.6582.90000 0004 1936 9748Institute of Molecular Medicine, University of Ulm, Ulm, Germany
| | - Mehmet Sacma
- grid.6582.90000 0004 1936 9748Institute of Molecular Medicine, University of Ulm, Ulm, Germany
| | - Vadim Sakk
- grid.6582.90000 0004 1936 9748Institute of Molecular Medicine, University of Ulm, Ulm, Germany
| | - Loris Mularoni
- grid.417656.7Program for advancing the Clinical Translation of Regenerative Medicine of Catalonia, P-CMR[C], L’Hospitalet de Llobregat, Barcelona, Spain
| | | | - Mireya Plass
- grid.417656.7Program for advancing the Clinical Translation of Regenerative Medicine of Catalonia, P-CMR[C], L’Hospitalet de Llobregat, Barcelona, Spain ,grid.512890.7Center for Networked Biomedical Research on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain ,grid.417656.7Gene Regulation of Cell Identity Group, Regenerative Medicine Program, The Bellvitge Institute for Biomedical Research (IDIBELL), L’Hospitalet de Llobregat, Barcelona, Spain
| | - Yi Zheng
- grid.239573.90000 0000 9025 8099Division of Experimental Hematology and Cancer Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH USA
| | - Hartmut Geiger
- grid.6582.90000 0004 1936 9748Institute of Molecular Medicine, University of Ulm, Ulm, Germany
| | - M. Carolina Florian
- grid.417656.7Stem Cell Aging Group, Regenerative Medicine Program, The Bellvitge Institute for Biomedical Research (IDIBELL), L’Hospitalet de Llobregat, Barcelona, Spain ,grid.417656.7Program for advancing the Clinical Translation of Regenerative Medicine of Catalonia, P-CMR[C], L’Hospitalet de Llobregat, Barcelona, Spain ,grid.512890.7Center for Networked Biomedical Research on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
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6
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Saçma M, Matteini F, Mulaw MA, Hageb A, Bogeska R, Sakk V, Vollmer A, Marka G, Soller K, Milsom MD, Florian MC, Geiger H. Fast and high-fidelity in situ 3D imaging protocol for stem cells and niche components for mouse organs and tissues. STAR Protoc 2022; 3:101483. [PMID: 35769923 PMCID: PMC9234157 DOI: 10.1016/j.xpro.2022.101483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Quantitative 3D imaging of organ-wide cellular and subcellular components is central for revealing and understanding complex interactions between stem cells and their microenvironment. Here, we present a gentle but fast whole-mount immunofluorescence staining protocol for 3D confocal microscopy (iFAST3D) that preserves the 3D structure of the entire tissue and that of subcellular structures with high fidelity. The iFAST3D protocol enables reproducible and high-resolution 3D imaging of stem cells and various niche components for many mouse organs and tissues. For complete details on the use and execution of this protocol, please refer to Saçma et al. (2019). Whole-mount immunostaining protocol for 3D microscopy of stem cells and niche components Fast pipeline for multiple mouse organs and tissues High preservation of mouse tissue morphology and molecular integrity Allows long-term (up to 5 years) storage of samples for subsequent staining and imaging
Publisher’s note: Undertaking any experimental protocol requires adherence to local institutional guidelines for laboratory safety and ethics.
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Affiliation(s)
- Mehmet Saçma
- Institute of Molecular Medicine, Ulm University, 89081 Ulm, Germany.
| | - Francesca Matteini
- Stem Cell Aging Group, Regenerative Medicine Program, The Bellvitge Institute for Biomedical Research (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain; Program for Advancing the Clinical Translation of Regenerative Medicine of Catalonia, P-CMR[C], L'Hospitalet de Llobregat, Barcelona, Spain
| | - Medhanie A Mulaw
- Molecular Oncology Institute of Experimental Cancer Research, Medical Faculty, Ulm University, Ulm, Germany
| | - Ali Hageb
- Institute of Molecular Medicine, Ulm University, 89081 Ulm, Germany
| | - Ruzhica Bogeska
- Division of Experimental Hematology, German Cancer Research Center (DKFZ) and Heidelberg Institute for Stem Cell Technology and Experimental Medicine (HI-STEM), Heidelberg, Germany
| | - Vadim Sakk
- Institute of Molecular Medicine, Ulm University, 89081 Ulm, Germany
| | - Angelika Vollmer
- Institute of Molecular Medicine, Ulm University, 89081 Ulm, Germany
| | - Gina Marka
- Institute of Molecular Medicine, Ulm University, 89081 Ulm, Germany
| | - Karin Soller
- Institute of Molecular Medicine, Ulm University, 89081 Ulm, Germany
| | - Michael D Milsom
- Division of Experimental Hematology, German Cancer Research Center (DKFZ) and Heidelberg Institute for Stem Cell Technology and Experimental Medicine (HI-STEM), Heidelberg, Germany
| | - Maria Carolina Florian
- Stem Cell Aging Group, Regenerative Medicine Program, The Bellvitge Institute for Biomedical Research (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain; Program for Advancing the Clinical Translation of Regenerative Medicine of Catalonia, P-CMR[C], L'Hospitalet de Llobregat, Barcelona, Spain; Center for Networked Biomedical Research on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Hartmut Geiger
- Institute of Molecular Medicine, Ulm University, 89081 Ulm, Germany.
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7
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Perez-Correa JF, Tharmapalan V, Geiger H, Wagner W. Epigenetic Clocks for Mice Based on Age-Associated Regions That are Conserved Between Mouse Strains and Human. Front Cell Dev Biol 2022; 10:902857. [PMID: 35721486 PMCID: PMC9204067 DOI: 10.3389/fcell.2022.902857] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 05/13/2022] [Indexed: 11/13/2022] Open
Abstract
Aging of mice can be tracked by DNA methylation changes at specific sites in the genome. In this study, we used the recently released Infinium Mouse Methylation BeadChip to compare such epigenetic modifications in C57BL/6 (B6) and DBA/2J (DBA) mice. We observed marked differences in age-associated DNA methylation in these commonly used inbred mouse strains, indicating that epigenetic clocks for one strain cannot be simply applied to other strains without further verification. In B6 mice age-associated hypomethylation prevailed with focused hypermethylation at CpG islands, whereas in DBA mice CpG islands revealed rather hypomethylation upon aging. Interestingly, the CpGs with highest age-correlation were still overlapping in B6 and DBA mice and included the genes Hsf4, Prima1, Aspa, and Wnt3a. Notably, Hsf4 and Prima1 were also top candidates in previous studies based on whole genome deep sequencing approaches. Furthermore, Hsf4, Aspa, and Wnt3a revealed highly significant age-associated DNA methylation in the homologous regions in human. Subsequently, we used pyrosequencing of the four relevant regions to establish a targeted epigenetic clock that provided very high correlation with chronological age in independent cohorts of B6 (R2 = 0.98) and DBA (R2 = 0.91). Taken together, the methylome differs extensively between B6 and DBA mice, while prominent age-associated changes are conserved among these strains and even in humans. Our new targeted epigenetic clock with 4 CpGs provides a versatile tool for other researchers analyzing aging in mice.
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Affiliation(s)
- Juan-Felipe Perez-Correa
- Institute for Stem Cell Biology, RWTH Aachen University Medical School, Aachen, Germany
- Helmholtz Institute for Biomedical Engineering, RWTH Aachen University Medical School, Aachen, Germany
| | - Vithurithra Tharmapalan
- Institute for Stem Cell Biology, RWTH Aachen University Medical School, Aachen, Germany
- Helmholtz Institute for Biomedical Engineering, RWTH Aachen University Medical School, Aachen, Germany
| | - Hartmut Geiger
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Wolfgang Wagner
- Institute for Stem Cell Biology, RWTH Aachen University Medical School, Aachen, Germany
- Helmholtz Institute for Biomedical Engineering, RWTH Aachen University Medical School, Aachen, Germany
- *Correspondence: Wolfgang Wagner,
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8
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Hageb A, Thalheim T, Nattamai KJ, Möhrle B, Saçma M, Sakk V, Thielecke L, Cornils K, Grandy C, Port F, Gottschalk KE, Mallm JP, Glauche I, Galle J, Mulaw MA, Geiger H. Reduced adhesion of aged intestinal stem cells contributes to an accelerated clonal drift. Life Sci Alliance 2022; 5:5/8/e202201408. [PMID: 35487692 PMCID: PMC9057243 DOI: 10.26508/lsa.202201408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 04/11/2022] [Accepted: 04/12/2022] [Indexed: 11/30/2022] Open
Abstract
Analysis of clonal dynamics of intestinal stem cells supports an accelerated clonal drift upon aging, likely because of reduced adhesion of aged ISCs because of reduced canonical Wnt signaling. Upon aging, the function of the intestinal epithelium declines with a concomitant increase in aging-related diseases. ISCs play an important role in this process. It is known that ISC clonal dynamics follow a neutral drift model. However, it is not clear whether the drift model is still valid in aged ISCs. Tracking of clonal dynamics by clonal tracing revealed that aged crypts drift into monoclonality substantially faster than young ones. However, ISC tracing experiments, in vivo and ex vivo, implied a similar clonal expansion ability of both young and aged ISCs. Single-cell RNA sequencing for 1,920 high Lgr5 ISCs from young and aged mice revealed increased heterogeneity among subgroups of aged ISCs. Genes associated with cell adhesion were down-regulated in aged ISCs. ISCs of aged mice indeed show weaker adhesion to the matrix. Simulations applying a single cell–based model of the small intestinal crypt demonstrated an accelerated clonal drift at reduced adhesion strength, implying a central role for reduced adhesion for affecting clonal dynamics upon aging.
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Affiliation(s)
- Ali Hageb
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Torsten Thalheim
- Interdisciplinary Centre for Bioinformatics, University Leipzig, Leipzig, Germany
| | - Kalpana J Nattamai
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center (CCHMC), Cincinnati, OH, USA
| | - Bettina Möhrle
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Mehmet Saçma
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Vadim Sakk
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Lars Thielecke
- Institute for Medical Informatics and Biometry, Technische Universität Dresden, Dresden, Germany
| | - Kerstin Cornils
- Clinic of Pediatric Hematology and Oncology, Division of Pediatric Stem Cell Transplantation and Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Research Institute Children's Cancer Center Hamburg, Hamburg, Germany
| | - Carolin Grandy
- Institute for Experimental Physics, Ulm University, Ulm, Germany
| | - Fabian Port
- Institute for Experimental Physics, Ulm University, Ulm, Germany
| | - Kay-E Gottschalk
- Institute for Experimental Physics, Ulm University, Ulm, Germany
| | - Jan-Philipp Mallm
- Division of Chromatin Networks, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Ingmar Glauche
- Institute for Medical Informatics and Biometry, Technische Universität Dresden, Dresden, Germany
| | - Jörg Galle
- Interdisciplinary Centre for Bioinformatics, University Leipzig, Leipzig, Germany
| | - Medhanie A Mulaw
- Central Unit Single Cell Sequencing, Medical Faculty, Ulm University, Ulm, Germany
| | - Hartmut Geiger
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
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9
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Abstract
The intestine is one of the organs that relies on stem cell function for maintaining tissue homeostasis. Recent findings on intestinal aging show that intestinal architecture, such as villus length, crypt size, and cell composition changes in the aged crypts. The correspondent decline in the regenerative capacity of the intestine is mainly due to a decline in intestinal stem cell function upon aging, as the underlying mechanisms of aging intestinal stem cells are beginning to unravel. This review summarizes our current knowledge on stem cell-intrinsic mechanisms of aging of intestinal stem cells and their connection to extrinsic factors, such as niche cells and microbiota and will introduce recent approaches to attenuate or even revert the aging of intestinal stem cells.
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Affiliation(s)
- Kodandaramireddy Nalapareddy
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, OH 45229, USA
| | - Yi Zheng
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, OH 45229, USA
| | - Hartmut Geiger
- Institute of Molecular Medicine, Ulm University, Ulm, Germany.
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10
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Klimek M, Peter RS, Denkinger M, Dallmeier D, Rapp K, Rothenbacher D, Klenk J, Böhm B, Geiger H, Lukas A, Stingl J, Riepe M, Rapp K, Scharffetter-Kochanek K, Koenig W, Steinacker JM, Ludolph A, Nagel G, Peter R. The relationship of weather with daily physical activity and the time spent out of home in older adults from Germany – the ActiFE study. Eur Rev Aging Phys Act 2022; 19:6. [PMID: 35151273 PMCID: PMC8903592 DOI: 10.1186/s11556-022-00286-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 02/03/2022] [Indexed: 11/18/2022] Open
Abstract
Background There is a need for a comprehensive evaluation of the associations between varieties of weather conditions on the time spent out-of-home (TOH) and on walking duration (WD) among older adults. We aim to investigate the extent to which various weather parameters (temperature, solar radiation, sunshine duration, humidity, windspeed, and rain) determine daily WD the TOH in older adults. Methods The ActiFE (Activity and Function in Older People in Ulm) study is a prospective study of participants aged 65 years or older who wore an accelerometer and kept a movement diary in up to three temporally separated waves from 2009 to 2018 for a duration up to seven days per wave (up to three weeks in summary). We used weather data from a weather station near the participants‘ homes. Age-adjusted and gender-stratified generalized mixed models were used to predict WD and TOH (with 95% confidence interval (CI)) within and between weather categories. Generalized additive models were computed for the single predictions at the weather quartile boundaries. Cubic splines (with 95% pointwise confidence bands (CB)) visualized the continuous course of the weather values. Results Higher temperatures, solar radiation and more hours of sunshine, led to an increase in WD and TOH, while higher precipitation, humidities and windspeeds led to a decrease. Women had in general higher WD and TOH times than men. Conclusions Our data suggest that weather parameters have a considerable influence on PA and TOH. Future analyses and interpretation of PA data should therefore account for weather parameters. Supplementary Information The online version contains supplementary material available at 10.1186/s11556-022-00286-0.
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11
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Oostendorp R, Enard W, Götze K, Geiger H, Geuder J, Hecker J, Hettler F, Landspersky T, Marquez SR, Sacma M, Schreck C, verbeek M. 3156 – BONE MARROW TRANSPLANTATION COMPROMISES THE REGENERATIVE CAPACITY OF THE NICHE. Exp Hematol 2022. [DOI: 10.1016/j.exphem.2022.07.212] [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: 11/04/2022]
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12
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Schuster T, Geiger H. Septins in Stem Cells. Front Cell Dev Biol 2021; 9:801507. [PMID: 34957123 PMCID: PMC8695968 DOI: 10.3389/fcell.2021.801507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 11/24/2021] [Indexed: 12/01/2022] Open
Abstract
Septins were first described in yeast. Due to extensive research in non-yeast cells, Septins are now recognized across all species as important players in the regulation of the cytoskeleton, in the establishment of polarity, for migration, vesicular trafficking and scaffolding. Stem cells are primarily quiescent cells, and this actively maintained quiescent state is critical for proper stem cell function. Equally important though, stem cells undergo symmetric or asymmetric division, which is likely linked to the level of symmetry found in the mother stem cell. Due to the ability to organize barriers and be able to break symmetry in cells, Septins are thought to have a significant impact on organizing quiescence as well as the mode (symmetric vs asymmetric) of stem cell division to affect self-renewal versus differentiation. Mechanisms of regulating mammalian quiescence and symmetry breaking by Septins are though still somewhat elusive. Within this overview article, we summarize current knowledge on the role of Septins in stem cells ranging from yeast to mice especially with respect to quiescence and asymmetric division, with a special focus on hematopoietic stem cells.
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Affiliation(s)
| | - Hartmut Geiger
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
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13
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Kandi R, Senger K, Grigoryan A, Soller K, Sakk V, Schuster T, Eiwen K, Menon MB, Gaestel M, Zheng Y, Florian MC, Geiger H. Cdc42-Borg4-Septin7 axis regulates HSC polarity and function. EMBO Rep 2021; 22:e52931. [PMID: 34661963 PMCID: PMC8647144 DOI: 10.15252/embr.202152931] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 09/13/2021] [Accepted: 09/17/2021] [Indexed: 01/03/2023] Open
Abstract
Aging of hematopoietic stem cells (HSCs) is caused by the elevated activity of the small RhoGTPase Cdc42 and an apolar distribution of proteins. Mechanisms by which Cdc42 activity controls polarity of HSCs are not known. Binder of RhoGTPases proteins (Borgs) are known effector proteins of Cdc42 that are able to regulate the cytoskeletal Septin network. Here, we show that Cdc42 interacts with Borg4, which in turn interacts with Septin7 to regulate the polar distribution of Cdc42, Borg4, and Septin7 within HSCs. Genetic deletion of either Borg4 or Septin7 results in a reduced frequency of HSCs polar for Cdc42 or Borg4 or Septin7, a reduced engraftment potential and decreased lymphoid‐primed multipotent progenitor (LMPP) frequency in the bone marrow. Taken together, our data identify a Cdc42‐Borg4‐Septin7 axis essential for the maintenance of polarity within HSCs and for HSC function and provide a rationale for further investigating the role of Borgs and Septins in the regulation of compartmentalization within stem cells.
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Affiliation(s)
- Ravinder Kandi
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | | | - Ani Grigoryan
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Karin Soller
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Vadim Sakk
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Tanja Schuster
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Karina Eiwen
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Manoj B Menon
- Institute of Cell Biochemistry, Hannover Medical School, Hannover, Germany.,Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, New Delhi, India
| | - Matthias Gaestel
- Institute of Cell Biochemistry, Hannover Medical School, Hannover, Germany
| | - Yi Zheng
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | | | - Hartmut Geiger
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
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14
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Schwab JD, Ikonomi N, Werle SD, Weidner FM, Geiger H, Kestler HA. Reconstructing Boolean network ensembles from single-cell data for unraveling dynamics in the aging of human hematopoietic stem cells. Comput Struct Biotechnol J 2021; 19:5321-5332. [PMID: 34630946 PMCID: PMC8487005 DOI: 10.1016/j.csbj.2021.09.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 05/15/2021] [Revised: 08/20/2021] [Accepted: 09/12/2021] [Indexed: 01/08/2023] Open
Abstract
Regulatory dependencies in molecular networks are the basis of dynamic behaviors affecting the phenotypical landscape. With the advance of high throughput technologies, the detail of omics data has arrived at the single-cell level. Nevertheless, new strategies are required to reconstruct regulatory networks based on populations of single-cell data. Here, we present a new approach to generate populations of gene regulatory networks from single-cell RNA-sequencing (scRNA-seq) data. Our approach exploits the heterogeneity of single-cell populations to generate pseudo-timepoints. This allows for the first time to uncouple network reconstruction from a direct dependency on time series measurements. The generated time series are then fed to a combined reconstruction algorithm. The latter allows a fast and efficient reconstruction of ensembles of gene regulatory networks. Since this approach does not require knowledge on time-related trajectories, it allows us to model heterogeneous processes such as aging. Applying the approach to the aging-associated NF-κB signaling pathway-based scRNA-seq data of human hematopoietic stem cells (HSCs), we were able to reconstruct eight ensembles, and evaluate their dynamic behavior. Moreover, we propose a strategy to evaluate the resulting attractor patterns. Interaction graph-based features and dynamic investigations of our model ensembles provide a new perspective on the heterogeneity and mechanisms related to human HSCs aging.
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Affiliation(s)
- Julian D Schwab
- Institute of Medical Systems Biology, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
| | - Nensi Ikonomi
- Institute of Medical Systems Biology, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
| | - Silke D Werle
- Institute of Medical Systems Biology, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
| | - Felix M Weidner
- Institute of Medical Systems Biology, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
| | - Hartmut Geiger
- Institute of Molecular Medicine, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
| | - Hans A Kestler
- Institute of Medical Systems Biology, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
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15
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Maity P, Singh K, Krug L, Koroma A, Hainzl A, Bloch W, Kochanek S, Wlaschek M, Schorpp-Kistner M, Angel P, Ignatius A, Geiger H, Scharffetter-Kochanek K. Persistent JunB activation in fibroblasts disrupts stem cell niche interactions enforcing skin aging. Cell Rep 2021; 36:109634. [PMID: 34469740 DOI: 10.1016/j.celrep.2021.109634] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 06/15/2021] [Accepted: 08/09/2021] [Indexed: 01/02/2023] Open
Abstract
Fibroblasts residing in the connective tissues constitute the stem cell niche, particularly in organs such as skin. Although the effect of fibroblasts on stem cell niches and organ aging is an emerging concept, the underlying mechanisms are largely unresolved. We report a mechanism of redox-dependent activation of transcription factor JunB, which, through concomitant upregulation of p16INK4A and repression of insulin growth factor-1 (IGF-1), initiates the installment of fibroblast senescence. Fibroblast senescence profoundly disrupts the metabolic and structural niche, and its essential interactions with different stem cells thus enforces depletion of stem cells pools and skin tissue decline. In fact, silencing of JunB in a fibroblast-niche-specific manner-by reinstatement of IGF-1 and p16 levels-restores skin stem cell pools and overall skin tissue integrity. Here, we report a role of JunB in the control of connective tissue niche and identified targets to combat skin aging and associated pathologies.
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Affiliation(s)
- Pallab Maity
- Department of Dermatology and Allergic Diseases, Ulm University, 89081 Ulm, Germany; Aging Research Center (ARC), 89081 Ulm, Germany.
| | - Karmveer Singh
- Department of Dermatology and Allergic Diseases, Ulm University, 89081 Ulm, Germany; Aging Research Center (ARC), 89081 Ulm, Germany
| | - Linda Krug
- Department of Dermatology and Allergic Diseases, Ulm University, 89081 Ulm, Germany
| | - Albert Koroma
- Department of Dermatology and Allergic Diseases, Ulm University, 89081 Ulm, Germany; Aging Research Center (ARC), 89081 Ulm, Germany
| | - Adelheid Hainzl
- Department of Dermatology and Allergic Diseases, Ulm University, 89081 Ulm, Germany
| | - Wilhelm Bloch
- Institute of Cardiology and Sports Medicine, Molecular and cellular Sports Medicine, German Sport University Cologne, 50933 Cologne, Germany
| | - Stefan Kochanek
- Department of Gene Therapy, University of Ulm, 89081 Ulm, Germany
| | - Meinhard Wlaschek
- Department of Dermatology and Allergic Diseases, Ulm University, 89081 Ulm, Germany
| | - Marina Schorpp-Kistner
- Division of Signal Transduction and Growth Control, German Cancer Research Center (DKFZ) and DKFZ-ZMBH Alliance, 69120 Heidelberg, Germany
| | - Peter Angel
- Division of Signal Transduction and Growth Control, German Cancer Research Center (DKFZ) and DKFZ-ZMBH Alliance, 69120 Heidelberg, Germany
| | - Anita Ignatius
- Institute of Orthopaedic Research and Biomechanics, Ulm University, 89081 Ulm, Germany
| | - Hartmut Geiger
- Aging Research Center (ARC), 89081 Ulm, Germany; Institute of Molecular Medicine and Stem Cell Aging, Ulm University, 89081 Ulm, Germany; Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, OH 45229, USA
| | - Karin Scharffetter-Kochanek
- Department of Dermatology and Allergic Diseases, Ulm University, 89081 Ulm, Germany; Aging Research Center (ARC), 89081 Ulm, Germany.
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16
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Mejia-Ramirez E, Geiger H, Florian MC. Loss of epigenetic polarity is a hallmark of hematopoietic stem cell aging. Hum Mol Genet 2021; 29:R248-R254. [PMID: 32821941 DOI: 10.1093/hmg/ddaa189] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 08/14/2020] [Accepted: 08/17/2020] [Indexed: 01/01/2023] Open
Abstract
Changes of polarity in somatic stem cells upon aging or disease lead to a functional deterioration of stem cells and consequently loss of tissue homeostasis, likely due to changes in the mode (symmetry versus asymmetry) of stem cell divisions. Changes in polarity of epigenetic markers (or 'epi-polarity') in stem cells, which are linked to alterations in chromatin architecture, might explain how a decline in the frequency of epipolar stem cells can have a long-lasting impact on the function of especially aging stem cells. The drift in epipolarity might represent a novel therapeutic target to improve stem cell function upon aging or disease. Here we review basic biological principles of epigenetic polarity, with a special focus on epipolarity and aging of hematopoietic stem cells.
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Affiliation(s)
- Eva Mejia-Ramirez
- Program of Regenerative Medicine, IDIBELL and Program for Clinical Translation of Regenerative Medicine in Catalonia (P-CMRC), Av. Granvia 199, 08908 L'Hospitalet de Llobregat, Barcelona, Spain
| | - Hartmut Geiger
- Institute of Molecular Medicine, University of Ulm, James-Franck-Ring 11c, 89081, Ulm, Germany
| | - M Carolina Florian
- Program of Regenerative Medicine, IDIBELL and Program for Clinical Translation of Regenerative Medicine in Catalonia (P-CMRC), Av. Granvia 199, 08908 L'Hospitalet de Llobregat, Barcelona, Spain.,Institute of Molecular Medicine, University of Ulm, James-Franck-Ring 11c, 89081, Ulm, Germany
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17
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Sacma M, Mulaw M, Hageb A, Bogeska R, Sakk V, Vollmer A, Marka G, Soller K, Milsom M, Florian M, Geiger H. 3031 – HEMATOPOIETIC STEM CELLS GENERATE THEIR OWN HEMATOPOIETIC MICROENVIRONMENT. Exp Hematol 2021. [DOI: 10.1016/j.exphem.2021.12.252] [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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18
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Huppertz S, Senger K, Brown A, Leins H, Eiwen K, Mulaw MA, Geiger H, Becker M. KDM6A, a histone demethylase, regulates stress hematopoiesis and early B-cell differentiation. Exp Hematol 2021; 99:32-43.e13. [PMID: 34126175 DOI: 10.1016/j.exphem.2021.06.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 05/26/2021] [Accepted: 06/09/2021] [Indexed: 11/16/2022]
Abstract
Histone methylases and demethylases regulate gene expression programs in hematopoiesis. The molecular function of the demethylase KDM6A in normal hematopoiesis and, in particular, for the hematopoietic stem and progenitor cell (HSPC) compartment remains only partially understood. Female but not male Kdm6a-/- HSPCs were functionally impaired in adoptive transfer experiments as well as upon proliferative stress induced by 5-fluorouracil. Loss of Kdm6a affected primarily early B cells and erythroid and myeloid progenitor cells with respect to both number and function. Global gene expression analyses revealed a shared altered gene signature in Kdm6a-/- pro-B and pre-B cells that is also present in HSPCs, supporting that altered B-cell differentiation in Kdm6a-/- animals is already initiated in HSPCs. Interestingly, loss of KDM6A did not affect the global level of methylation of H3K27, its presumed target, in hematopoietic cells. Our data indicate a critical role for KDM6A in the regulation of hematopoietic differentiation and differentiation-specific gene expression programs, with a prominent role in early B-cell differentiation that is likely independent of H3K27 methylation status.
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Affiliation(s)
- Sascha Huppertz
- Institute for Medical Radiology and Cell Research (MSZ), Center of Experimental Molecular Medicine (ZEMM), Würzburg University, Würzburg, Germany
| | - Katharina Senger
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Andreas Brown
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Hanna Leins
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Karina Eiwen
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Medhanie A Mulaw
- Institute of Experimental Cancer Research, Ulm University, Ulm, Germany
| | - Hartmut Geiger
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Matthias Becker
- Institute for Medical Radiology and Cell Research (MSZ), Center of Experimental Molecular Medicine (ZEMM), Würzburg University, Würzburg, Germany.
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19
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Kumar S, Nattamai KJ, Hassan A, Amoah A, Karns R, Zhang C, Liang Y, Shimamura A, Florian MC, Bissels U, Luevano M, Bosio A, Davies SM, Mulaw M, Geiger H, Myers KC. Repolarization of HSC attenuates HSCs failure in Shwachman-Diamond syndrome. Leukemia 2021; 35:1751-1762. [PMID: 33077869 DOI: 10.1038/s41375-020-01054-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 08/11/2020] [Accepted: 10/05/2020] [Indexed: 01/01/2023]
Abstract
Shwachman-Diamond syndrome (SDS) is a bone marrow failure (BMF) syndrome associated with an increased risk of myelodysplasia and leukemia. The molecular mechanisms of SDS are not fully understood. We report that primitive hematopoietic cells from SDS patients present with a reduced activity of the small RhoGTPase Cdc42 and concomitantly a reduced frequency of HSCs polar for polarity proteins. The level of apolarity of SDS HSCs correlated with the magnitude of HSC depletion in SDS patients. Importantly, exogenously provided Wnt5a or GDF11 that elevates the activity of Cdc42 restored polarity in SDS HSCs and increased the number of HSCs in SDS patient samples in surrogate ex vivo assays. Single cell level RNA-Seq analyses of SDS HSCs and daughter cells demonstrated that SDS HSC treated with GDF11 are transcriptionally more similar to control than to SDS HSCs. Treatment with GDF11 reverted pathways in SDS HSCs associated with rRNA processing and ribosome function, but also viral infection and immune function, p53-dependent DNA damage, spindle checkpoints, and metabolism, further implying a role of these pathways in HSC failure in SDS. Our data suggest that HSC failure in SDS is driven at least in part by low Cdc42 activity in SDS HSCs. Our data thus identify novel rationale approaches to attenuate HSCs failure in SDS.
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Affiliation(s)
- Sachin Kumar
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Research Foundation, Cincinnati, OH, 45229, USA
- Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Kalpana J Nattamai
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Research Foundation, Cincinnati, OH, 45229, USA
| | - Aishlin Hassan
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Research Foundation, Cincinnati, OH, 45229, USA
| | - Amanda Amoah
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Rebekah Karns
- Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, OH, USA
| | - Cuiping Zhang
- Department of Toxicology and Cancer Biology, University of Kentucky, Health Sciences Research Building, Room 340, 1095 V.A. Drive, Lexington, KY, 40536, USA
| | - Ying Liang
- Department of Toxicology and Cancer Biology, University of Kentucky, Health Sciences Research Building, Room 340, 1095 V.A. Drive, Lexington, KY, 40536, USA
| | - Akiko Shimamura
- Boston Children's Hospital, Dana Farber Cancer Institute, Boston, MA, USA
| | | | - Ute Bissels
- Miltenyi Biotec GmbH, Bergisch Gladbach, Germany
| | | | | | - Stella M Davies
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Medhanie Mulaw
- Institute of Experimental Cancer Research, Ulm University, Ulm, Germany
| | - Hartmut Geiger
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Research Foundation, Cincinnati, OH, 45229, USA.
| | - Kasiani C Myers
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
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20
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Guidi N, Marka G, Sakk V, Zheng Y, Florian MC, Geiger H. An aged bone marrow niche restrains rejuvenated hematopoietic stem cells. Stem Cells 2021; 39:1101-1106. [PMID: 33847429 DOI: 10.1002/stem.3372] [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] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 02/19/2021] [Indexed: 11/11/2022]
Abstract
Aging-associated leukemia and aging-associated immune remodeling are in part caused by aging of hematopoietic stem cells (HSCs). An increase in the activity of the small RhoGTPase cell division control protein 42 (Cdc42) within HSCs causes aging of HSCs. Old HSCs, treated ex vivo with a specific inhibitor of Cdc42 activity termed CASIN, stay rejuvenated upon transplantation into young recipients. We determined in this study the influence of an aged niche on the function of ex vivo rejuvenated old HSCs, as the relative contribution of HSCs intrinsic mechanisms vs extrinsic mechanisms (niche) for aging of HSCs still remain unknown. Our results show that an aged niche restrains the function of ex vivo rejuvenated HSCs, which is at least in part linked to a low level of the cytokine osteopontin found in aged niches. The data imply that sustainable rejuvenation of the function of aged HSCs in vivo will need to address the influence of an aged niche on rejuvenated HSCs.
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Affiliation(s)
- Novella Guidi
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Gina Marka
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Vadim Sakk
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Yi Zheng
- Experimental Hematology and Cancer Biology, CCHMC, Cincinnati, Ohio, USA
| | | | - Hartmut Geiger
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
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21
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Grigoryan A, Pospiech J, Krämer S, Lipka D, Liehr T, Geiger H, Kimura H, Mulaw MA, Florian MC. Attrition of X Chromosome Inactivation in Aged Hematopoietic Stem Cells. Stem Cell Reports 2021; 16:708-716. [PMID: 33798450 PMCID: PMC8072063 DOI: 10.1016/j.stemcr.2021.03.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 03/03/2021] [Accepted: 03/04/2021] [Indexed: 01/03/2023] Open
Abstract
During X chromosome inactivation (XCI), the inactive X chromosome (Xi) is recruited to the nuclear lamina at the nuclear periphery. Beside X chromosome reactivation resulting in a highly penetrant aging-like hematopoietic malignancy, little is known about XCI in aged hematopoietic stem cells (HSCs). Here, we demonstrate that LaminA/C defines a distinct repressive nuclear compartment for XCI in young HSCs, and its reduction in aged HSCs correlates with an impairment in the overall control of XCI. Integrated omics analyses reveal higher variation in gene expression, global hypomethylation, and significantly increased chromatin accessibility on the X chromosome (Chr X) in aged HSCs. In summary, our data support the role of LaminA/C in the establishment of a special repressive compartment for XCI in HSCs, which is impaired upon aging.
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Affiliation(s)
- Ani Grigoryan
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081 Ulm, Germany
| | - Johannes Pospiech
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081 Ulm, Germany
| | - Stephen Krämer
- Section Translational Cancer Epigenomics, Division of Translational Medical Oncology, German Cancer Research Center (DKFZ) & National Center for Tumor Diseases (NCT) Heidelberg, Heidelberg, Germany; Bioinformatics and Omics Data Analysis, German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Biosciences, University of Heidelberg, Heidelberg, Germany; Biomedical Informatics, Data Mining and Data Analytics, Faculty of Applied Computer Science and Medical Faculty, University of Augsburg, Augsburg, Germany
| | - Daniel Lipka
- Section Translational Cancer Epigenomics, Division of Translational Medical Oncology, German Cancer Research Center (DKFZ) & National Center for Tumor Diseases (NCT) Heidelberg, Heidelberg, Germany
| | - Thomas Liehr
- Jena University Hospital, Friedrich Schiller University, Institute of Human Genetics, Am Klinikum 1, 07747 Jena, Germany
| | - Hartmut Geiger
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081 Ulm, Germany
| | - Hiroshi Kimura
- Cell Biology Center, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Medhanie A Mulaw
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081 Ulm, Germany; Department of Internal Medicine I, University Hospital Ulm, Ulm, Germany.
| | - Maria Carolina Florian
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081 Ulm, Germany; Stem Cell Aging Group, Regenerative Medicine Program, Bellvitge Institute for Biomedical Research (IDIBELL) and Program for advancing the Clinical Translation of Regenerative Medicine of Catalonia, P-CMR[C], Av. Gran Via 199-203, 08908, L'Hospitalet de Llobregat, Barcelona, Spain; Center for Networked Biomedical Research on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain.
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22
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Serrano-Lopez J, Hegde S, Kumar S, Serrano J, Fang J, Wellendorf AM, Roche PA, Rangel Y, Carrington LJ, Geiger H, Grimes HL, Luther S, Maillard I, Sanchez-Garcia J, Starczynowski DT, Cancelas JA. Inflammation rapidly recruits mammalian GMP and MDP from bone marrow into regional lymphatics. eLife 2021; 10:e66190. [PMID: 33830019 PMCID: PMC8137144 DOI: 10.7554/elife.66190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 01/02/2021] [Accepted: 04/07/2021] [Indexed: 12/22/2022] Open
Abstract
Innate immune cellular effectors are actively consumed during systemic inflammation, but the systemic traffic and the mechanisms that support their replenishment remain unknown. Here, we demonstrate that acute systemic inflammation induces the emergent activation of a previously unrecognized system of rapid migration of granulocyte-macrophage progenitors and committed macrophage-dendritic progenitors, but not other progenitors or stem cells, from bone marrow (BM) to regional lymphatic capillaries. The progenitor traffic to the systemic lymphatic circulation is mediated by Ccl19/Ccr7 and is NF-κB independent, Traf6/IκB-kinase/SNAP23 activation dependent, and is responsible for the secretion of pre-stored Ccl19 by a subpopulation of CD205+/CD172a+ conventional dendritic cells type 2 and upregulation of BM myeloid progenitor Ccr7 signaling. Mature myeloid Traf6 signaling is anti-inflammatory and necessary for lymph node myeloid cell development. This report unveils the existence and the mechanistic basis of a very early direct traffic of myeloid progenitors from BM to lymphatics during inflammation.
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Affiliation(s)
- Juana Serrano-Lopez
- Divisions of Experimental Hematology, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of MedicineCincinnatiUnited States
| | - Shailaja Hegde
- Divisions of Experimental Hematology, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of MedicineCincinnatiUnited States
- Hoxworth Blood Center, University of Cincinnati College of MedicineCincinnatiUnited States
| | - Sachin Kumar
- Divisions of Experimental Hematology, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of MedicineCincinnatiUnited States
| | - Josefina Serrano
- Hematology Department, Reina Sofía University Hospital/Maimonides Biomedical Research Institute of Córdoba (IMIBIC)/University of CórdobaCórdobaSpain
| | - Jing Fang
- Divisions of Experimental Hematology, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of MedicineCincinnatiUnited States
| | - Ashley M Wellendorf
- Divisions of Experimental Hematology, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of MedicineCincinnatiUnited States
| | - Paul A Roche
- Center for Cancer Research, National Cancer InstituteBethesdaUnited States
- Experimental Immunology Branch, National Cancer Institute, National Institutes of HealthBethesdaUnited States
| | - Yamileth Rangel
- Hematology Department, Reina Sofía University Hospital/Maimonides Biomedical Research Institute of Córdoba (IMIBIC)/University of CórdobaCórdobaSpain
| | | | - Hartmut Geiger
- Divisions of Experimental Hematology, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of MedicineCincinnatiUnited States
- Institute of Molecular Medicine, Ulm UniversityUlmGermany
| | - H Leighton Grimes
- Immunobiology, Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of MedicineCincinnatiUnited States
| | - Sanjiv Luther
- Center for Immunity and Infection, Department of Biochemistry, University of LausanneEpalingesSwitzerland
| | - Ivan Maillard
- University of Pennsylvania Perelman School of MedicinePhiladelphiaUnited States
| | - Joaquin Sanchez-Garcia
- Hematology Department, Reina Sofía University Hospital/Maimonides Biomedical Research Institute of Córdoba (IMIBIC)/University of CórdobaCórdobaSpain
| | - Daniel T Starczynowski
- Divisions of Experimental Hematology, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of MedicineCincinnatiUnited States
- Department of Cancer Biology, University of CincinnatiCincinnatiUnited States
| | - Jose A Cancelas
- Divisions of Experimental Hematology, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of MedicineCincinnatiUnited States
- Hoxworth Blood Center, University of Cincinnati College of MedicineCincinnatiUnited States
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23
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Nalapareddy K, Hassan A, Sampson LL, Zheng Y, Geiger H. Suppression of elevated Cdc42 activity promotes the regenerative potential of aged intestinal stem cells. iScience 2021; 24:102362. [PMID: 33870147 PMCID: PMC8044426 DOI: 10.1016/j.isci.2021.102362] [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: 04/07/2020] [Revised: 02/08/2021] [Accepted: 03/23/2021] [Indexed: 11/29/2022] Open
Abstract
Homeostasis in the intestinal epithelium is maintained by Lgr5-positive intestinal stem cells (ISCs) located at the base of the crypt. The function of ISCs is reduced upon aging which leads to a decline of regeneration of the intestinal epithelium. We report that aged intestinal crypts present with an elevated activity of the small RhoGTPase Cdc42. Elevation of Cdc42 activity in young animals by genetic means causes premature ISC aging, whereas pharmacological suppression of elevated Cdc42 activity restores organoid formation potential in vitro. Consistent with a critical role of elevated Cdc42 activity in aged ISCs for a reduced regenerative capacity of aged ISCs, suppression of Cdc42 activity in vivo improves crypt regeneration in aged mice. Thus, pharmacological reduction of Cdc42 activity can improve the regeneration of aged intestinal epithelium. Intestinal stem cells show high RhoGTPase Cdc42 activity compared to Paneth cells Cdc42 activity is further increased in aged intestinal stem cells (ISCs) Attenuation of Cdc42 activity ex vivo or in vivo improves the function of aged ISCs
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Affiliation(s)
- Kodandaramireddy Nalapareddy
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, 3333 Burnet Avenue, Cincinnati, OH 45229, USA
| | - Aishlin Hassan
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, 3333 Burnet Avenue, Cincinnati, OH 45229, USA
| | - Leesa L Sampson
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, 3333 Burnet Avenue, Cincinnati, OH 45229, USA
| | - Yi Zheng
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, 3333 Burnet Avenue, Cincinnati, OH 45229, USA
| | - Hartmut Geiger
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, 3333 Burnet Avenue, Cincinnati, OH 45229, USA
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24
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Tiwari RL, Mishra P, Martin N, George NO, Sakk V, Soller K, Nalapareddy K, Nattamai K, Scharffetter-Kochanek K, Florian MC, Geiger H. A Wnt5a-Cdc42 axis controls aging and rejuvenation of hair-follicle stem cells. Aging (Albany NY) 2021; 13:4778-4793. [PMID: 33629967 PMCID: PMC7950224 DOI: 10.18632/aging.202694] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 01/26/2021] [Indexed: 12/30/2022]
Abstract
Normal hair growth occurs in cycles, comprising growth (anagen), cessation (catagen) and rest (telogen). Upon aging, the initiation of anagen is significantly delayed, which results in impaired hair regeneration. Hair regeneration is driven by hair follicle stem cells (HFSCs). We show here that aged HFSCs present with a decrease in canonical Wnt signaling and a shift towards non-canonical Wnt5a driven signaling which antagonizes canonical Wnt signaling. Elevated expression of Wnt5a in HFSCs upon aging results in elevated activity of the small RhoGTPase Cdc42 as well as a change in the spatial distribution of Cdc42 within HFSCs. Treatment of aged HFSC with a specific pharmacological inhibitor of Cdc42 activity termed CASIN to suppress the aging-associated elevated activity of Cdc42 restored canonical Wnt signaling in aged HFSCs. Treatment of aged mice in vivo with CASIN induced anagen onset and increased the percentage of anagen skin areas. Aging-associated functional deficits of HFSCs are at least in part intrinsic to HFSCs and can be restored by rational pharmacological approaches.
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Affiliation(s)
- Rajiv L Tiwari
- Institute of Molecular Medicine, University of Ulm, Ulm 89081, Germany
| | - Pratibha Mishra
- Institute of Molecular Medicine, University of Ulm, Ulm 89081, Germany
| | - Nicola Martin
- Institute of Molecular Medicine, University of Ulm, Ulm 89081, Germany
| | | | - Vadim Sakk
- Institute of Molecular Medicine, University of Ulm, Ulm 89081, Germany
| | - Karin Soller
- Institute of Molecular Medicine, University of Ulm, Ulm 89081, Germany
| | - Kodandaramireddy Nalapareddy
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, OH 45229, USA
| | - Kalpana Nattamai
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, OH 45229, USA
| | | | | | - Hartmut Geiger
- Institute of Molecular Medicine, University of Ulm, Ulm 89081, Germany
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25
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26
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Amoah A, Keller A, Emini R, Hoenicka M, Liebold A, Vollmer A, Eiwen K, Soller K, Sakk V, Zheng Y, Florian MC, Geiger H. Aging of human hematopoietic stem cells is linked to changes in Cdc42 activity. Haematologica 2021; 107:393-402. [PMID: 33440922 PMCID: PMC8804569 DOI: 10.3324/haematol.2020.269670] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Indexed: 11/23/2022] Open
Abstract
In this study, we characterize age-related phenotypes of human hematopoietic stem cells (HSC). We report increased frequencies of HSC, hematopoietic progenitor cells and lineage negative cells in the elderly but a decreased frequency of multi-lymphoid progenitors. Aged human HSC further exhibited a delay in initiating division ex vivo though without changes in their division kinetics. The activity of the small RhoGTPase Cdc42 was elevated in aged human hematopoietic cells and we identified a positive correlation between Cdc42 activity and the frequency of HSC upon aging. The frequency of human HSC polar for polarity proteins was, similar to the mouse, decreased upon aging, while inhibition of Cdc42 activity via the specific pharmacological inhibitor of Cdc42 activity, CASIN, resulted in re-polarization of aged human HSC with respect to Cdc42. Elevated activity of Cdc42 in aged HSC thus contributed to age-related changes in HSC. Xenotransplant, using NBSGW mice as recipients, showed elevated chimerism in recipients of aged compared to young HSC. Aged HSC treated with CASIN ex vivo displayed an engraftment profile similar to recipients of young HSC. Taken together, our work reveals strong evidence for a role of elevated Cdc42 activity in driving aging of human HSC, and similar to mice, this presents a likely possibility for attenuation of aging in human HSC.
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Affiliation(s)
- Amanda Amoah
- Institute of Molecular Medicine, Ulm University, Meyerhofstrasse, 89081 Ulm
| | - Anja Keller
- Institute of Molecular Medicine, Ulm University, Meyerhofstrasse, 89081 Ulm
| | - Ramiz Emini
- Department of Cardiothoracic and Vascular Surgery, Ulm University Hospital, Ulm
| | - Markus Hoenicka
- Department of Cardiothoracic and Vascular Surgery, Ulm University Hospital, Ulm
| | - Andreas Liebold
- Department of Cardiothoracic and Vascular Surgery, Ulm University Hospital, Ulm
| | - Angelika Vollmer
- Institute of Molecular Medicine, Ulm University, Meyerhofstrasse, 89081 Ulm
| | - Karina Eiwen
- Institute of Molecular Medicine, Ulm University, Meyerhofstrasse, 89081 Ulm
| | - Karin Soller
- Institute of Molecular Medicine, Ulm University, Meyerhofstrasse, 89081 Ulm
| | - Vadim Sakk
- Institute of Molecular Medicine, Ulm University, Meyerhofstrasse, 89081 Ulm
| | - Yi Zheng
- Cincinnati Children's Hospital Medical Center and University of Cincinnati
| | | | - Hartmut Geiger
- Institute of Molecular Medicine, Ulm University, Meyerhofstrasse, 89081 Ulm.
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27
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Han Y, Nikolić M, Gobs M, Franzen J, de Haan G, Geiger H, Wagner W. Targeted methods for epigenetic age predictions in mice. Sci Rep 2020; 10:22439. [PMID: 33384442 PMCID: PMC7775437 DOI: 10.1038/s41598-020-79509-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 12/09/2020] [Indexed: 12/14/2022] Open
Abstract
Age-associated DNA methylation reflects aspect of biological aging—therefore epigenetic clocks for mice can elucidate how the aging process in this model organism is affected by specific treatments or genetic background. Initially, age-predictors for mice were trained for genome-wide DNA methylation profiles and we have recently described a targeted assay based on pyrosequencing of DNA methylation at only three age-associated genomic regions. Here, we established alternative approaches using droplet digital PCR (ddPCR) and barcoded bisulfite amplicon sequencing (BBA-seq). At individual CG dinucleotides (CpGs) the correlation of DNA methylation with chronological age was slightly higher for pyrosequencing and ddPCR as compared to BBA-seq. On the other hand, BBA-seq revealed that neighboring CpGs tend to be stochastically modified at murine age-associated regions. Furthermore, the binary sequel of methylated and non-methylated CpGs in individual reads can be used for single-read predictions, which may reflect heterogeneity in epigenetic aging. In comparison to C57BL/6 mice the single-read age-predictions using BBA-seq were also accelerated in the shorter-lived DBA/2 mice, and in C57BL/6 mice with a lifespan quantitative trait locus of DBA/2 mice. Taken together, we describe alternative targeted methods for epigenetic age predictions that provide new perspectives for aging-intervention studies in mice.
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Affiliation(s)
- Yang Han
- Helmholtz-Institute for Biomedical Engineering, Stem Cell Biology and Cellular Engineering, RWTH Aachen University Medical School, Pauwelsstraße 20, 52074, Aachen, Germany.,Institute for Biomedical Engineering - Cell Biology, University Hospital of RWTH Aachen, Aachen, Germany
| | - Miloš Nikolić
- Helmholtz-Institute for Biomedical Engineering, Stem Cell Biology and Cellular Engineering, RWTH Aachen University Medical School, Pauwelsstraße 20, 52074, Aachen, Germany.,Institute for Biomedical Engineering - Cell Biology, University Hospital of RWTH Aachen, Aachen, Germany
| | - Michael Gobs
- Helmholtz-Institute for Biomedical Engineering, Stem Cell Biology and Cellular Engineering, RWTH Aachen University Medical School, Pauwelsstraße 20, 52074, Aachen, Germany.,Institute for Biomedical Engineering - Cell Biology, University Hospital of RWTH Aachen, Aachen, Germany
| | - Julia Franzen
- Helmholtz-Institute for Biomedical Engineering, Stem Cell Biology and Cellular Engineering, RWTH Aachen University Medical School, Pauwelsstraße 20, 52074, Aachen, Germany.,Institute for Biomedical Engineering - Cell Biology, University Hospital of RWTH Aachen, Aachen, Germany
| | - Gerald de Haan
- Laboratory of Ageing Biology and Stem Cells, European Research Institute for the Biology of Ageing, University Medical Center Groningen, Groningen, the Netherlands
| | - Hartmut Geiger
- Institute of Molecular Medicine, Ulm University, 89081, Ulm, Germany
| | - Wolfgang Wagner
- Helmholtz-Institute for Biomedical Engineering, Stem Cell Biology and Cellular Engineering, RWTH Aachen University Medical School, Pauwelsstraße 20, 52074, Aachen, Germany. .,Institute for Biomedical Engineering - Cell Biology, University Hospital of RWTH Aachen, Aachen, Germany.
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28
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Mair J, Diller GP, Geiger H, Greutmann M, Hessling G, Tobler D. [Adults with congenital heart disease presenting to the emergency department : Potential pitfalls]. Med Klin Intensivmed Notfmed 2020; 117:100-111. [PMID: 33103219 PMCID: PMC8897372 DOI: 10.1007/s00063-020-00752-6] [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: 04/21/2020] [Revised: 07/16/2020] [Accepted: 08/17/2020] [Indexed: 11/30/2022]
Abstract
Die Patientengruppe der Erwachsenen mit angeborenen Herzfehlern (EMAH) ist mittlerweile bereits größer als die der Kinder mit angeborenen Herzfehlern. EMAH-Patienten weisen auch nach Reparaturoperationen oft komplexe pathophysiologische und anatomische Verhältnisse auf. Bei Komplikationen kann es sehr rasch zu Notfallsituationen auch bei ansonsten asymptomatischen oder nur wenig symptomatischen Patienten kommen. Gemessen an der Gesamtzahl der Patienten, die von Notärzten und in den Notaufnahmen versorgt werden, sind EMAH-Notfallsituationen nach wie vor sehr selten. Diese Übersicht soll die Notfallbetreuung von EMAH-Patienten erleichtern. Für ca. zwei Drittel aller Notfälle sind Rhythmusstörungen und akute Herzinsuffizienz verantwortlich. Rhythmusstörungen müssen in der Regel zügig terminiert werden, weil sie unbehandelt rasch zur kardialen Dekompensation führen können. Bei Scheitern der medikamentösen Therapie oder hämodynamischer Instabilität müssen EMAH-Patienten mit tachykarden Rhythmusstörungen rasch elektrisch kardiovertiert werden. Symptomatische Bradykardien können eine rasche Schrittmacherversorgung erforderlich machen. Aufgrund der komplexen Anatomie kann das Einschwemmen eines transvenösen Interim-Schrittmachers bei einzelnen Vitien unmöglich sein. Die akute kardiale Dekompensation bei EMAH ist oft durch ein akutes Rechtsherzversagen verursacht. Weitere relativ häufige Aufnahmegründe sind Infektionen, Synkopen, Thromboembolien und Aortendissektion. Der Herzpass der Patienten informiert über das vorliegende Vitium. Die umgehende Kontaktaufnahme mit dem behandelnden EMAH-Zentrum wird dringend empfohlen.
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Affiliation(s)
- J Mair
- Universitätsklinik für Innere Medizin III - Kardiologie und Angiologie, Medizinische Universität Innsbruck, Anichstraße 35, 6020, Innsbruck, Österreich.
| | - G-P Diller
- Klinik für Kardiologie III - Angeborene Herzfehler und erworbene Klappenerkrankungen, Universitätsklinikum Münster, 48149, Münster, Deutschland
| | - H Geiger
- Abteilung Interne II - Kardiologie, Ordensklinikum Linz GmbH - Barmherzige Schwestern, 4010, Linz, Österreich
| | - M Greutmann
- Universitäres Herzzentrum, Kardiologie, Universitätsspital Zürich, 8091, Zürich, Schweiz
| | - G Hessling
- Abteilung für Elektrophysiologie, Deutsches Herzzentrum München, Klinik an der Technischen Universität München, 80636, München, Deutschland
| | - D Tobler
- Kardiologie, Universitätsspital Basel, 4031, Basel, Schweiz
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29
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Florian MC, Leins H, Gobs M, Han Y, Marka G, Soller K, Vollmer A, Sakk V, Nattamai KJ, Rayes A, Zhao X, Setchell K, Mulaw M, Wagner W, Zheng Y, Geiger H. Inhibition of Cdc42 activity extends lifespan and decreases circulating inflammatory cytokines in aged female C57BL/6 mice. Aging Cell 2020; 19:e13208. [PMID: 32755011 PMCID: PMC7511875 DOI: 10.1111/acel.13208] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 04/27/2020] [Accepted: 07/07/2020] [Indexed: 12/12/2022] Open
Abstract
Cdc42 is a small RhoGTPase regulating multiple functions in eukaryotic cells. The activity of Cdc42 is significantly elevated in several tissues of aged mice, while the Cdc42 gain‐of‐activity mouse model presents with a premature aging‐like phenotype and with decreased lifespan. These data suggest a causal connection between elevated activity of Cdc42, aging, and reduced lifespan. Here, we demonstrate that systemic treatment of aged (75‐week‐old) female C57BL/6 mice with a Cdc42 activity‐specific inhibitor (CASIN) for 4 consecutive days significantly extends average and maximum lifespan. Moreover, aged CASIN‐treated animals displayed a youthful level of the aging‐associated cytokines IL‐1β, IL‐1α, and INFγ in serum and a significantly younger epigenetic clock as based on DNA methylation levels in blood cells. Overall, our data show that systemic administration of CASIN to reduce Cdc42 activity in aged mice extends murine lifespan.
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Affiliation(s)
- Maria Carolina Florian
- Program of Regenerative Medicine, IDIBELL, Barcelona, Spain.,Institute of Molecular Medicine and Stem Cell Aging, Ulm University, Ulm, Germany
| | - Hanna Leins
- Institute of Molecular Medicine and Stem Cell Aging, Ulm University, Ulm, Germany
| | - Michael Gobs
- Helmholtz-Institute for Biomedical Engineering, Stem Cell Biology and Cellular Engineering, RWTH Aachen University Medical School, Aachen, Germany
| | - Yang Han
- Helmholtz-Institute for Biomedical Engineering, Stem Cell Biology and Cellular Engineering, RWTH Aachen University Medical School, Aachen, Germany
| | - Gina Marka
- Institute of Molecular Medicine and Stem Cell Aging, Ulm University, Ulm, Germany
| | - Karin Soller
- Institute of Molecular Medicine and Stem Cell Aging, Ulm University, Ulm, Germany
| | - Angelika Vollmer
- Institute of Molecular Medicine and Stem Cell Aging, Ulm University, Ulm, Germany
| | - Vadim Sakk
- Institute of Molecular Medicine and Stem Cell Aging, Ulm University, Ulm, Germany
| | - Kalpana J Nattamai
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, USA
| | - Ahmad Rayes
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, USA
| | - Xueheng Zhao
- Division of Pathology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, USA
| | - Kenneth Setchell
- Division of Pathology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, USA
| | - Medhanie Mulaw
- Institute of Experimental Cancer Research, Medical Faculty, University of Ulm, Ulm, Germany
| | - Wolfgang Wagner
- Helmholtz-Institute for Biomedical Engineering, Stem Cell Biology and Cellular Engineering, RWTH Aachen University Medical School, Aachen, Germany
| | - Yi Zheng
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, USA
| | - Hartmut Geiger
- Institute of Molecular Medicine and Stem Cell Aging, Ulm University, Ulm, Germany
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30
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Munir S, Basu A, Maity P, Krug L, Haas P, Jiang D, Strauss G, Wlaschek M, Geiger H, Singh K, Scharffetter-Kochanek K. TLR4-dependent shaping of the wound site by MSCs accelerates wound healing. EMBO Rep 2020; 21:e48777. [PMID: 32162777 PMCID: PMC7202058 DOI: 10.15252/embr.201948777] [Citation(s) in RCA: 26] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 02/14/2020] [Accepted: 02/18/2020] [Indexed: 12/13/2022] Open
Abstract
We here address the question whether the unique capacity of mesenchymal stem cells to re‐establish tissue homeostasis depends on their potential to sense pathogen‐associated molecular pattern and, in consequence, mount an adaptive response in the interest of tissue repair. After injection of MSCs primed with the bacterial wall component LPS into murine wounds, an unexpected acceleration of healing occurs, clearly exceeding that of non‐primed MSCs. This correlates with a fundamental reprogramming of the transcriptome in LPS‐treated MSCs as deduced from RNAseq analysis and its validation. A network of genes mediating the adaptive response through the Toll‐like receptor 4 (TLR4) pathway responsible for neutrophil and macrophage recruitment and their activation profoundly contributes to enhanced wound healing. In fact, injection of LPS‐primed MSCs silenced for TLR4 fails to accelerate wound healing. These unprecedented findings hold substantial promise to refine current MSC‐based therapies for difficult‐to‐treat wounds.
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Affiliation(s)
- Saira Munir
- Department of Dermatology and Allergic Diseases, Ulm University, Ulm, Germany
| | - Abhijit Basu
- Department of Dermatology and Allergic Diseases, Ulm University, Ulm, Germany
| | - Pallab Maity
- Department of Dermatology and Allergic Diseases, Ulm University, Ulm, Germany.,Aging Research Center (ARC), Ulm, Germany
| | - Linda Krug
- Department of Dermatology and Allergic Diseases, Ulm University, Ulm, Germany.,Aging Research Center (ARC), Ulm, Germany
| | - Philipp Haas
- Department of Dermatology and Allergic Diseases, Ulm University, Ulm, Germany
| | - Dongsheng Jiang
- Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Munich, Germany
| | - Gudrun Strauss
- Department of Pediatrics and Adolescent Medicine, Ulm University, Ulm, Germany
| | - Meinhard Wlaschek
- Department of Dermatology and Allergic Diseases, Ulm University, Ulm, Germany
| | - Hartmut Geiger
- Department of Dermatology and Allergic Diseases, Ulm University, Ulm, Germany.,Aging Research Center (ARC), Ulm, Germany.,Institute of Molecular Medicine and Stem Cell Aging, Ulm University, Ulm, Germany.,Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Karmveer Singh
- Department of Dermatology and Allergic Diseases, Ulm University, Ulm, Germany.,Aging Research Center (ARC), Ulm, Germany
| | - Karin Scharffetter-Kochanek
- Department of Dermatology and Allergic Diseases, Ulm University, Ulm, Germany.,Aging Research Center (ARC), Ulm, Germany
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31
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Brown A, Schuetz D, Han Y, Daria D, Nattamai KJ, Eiwen K, Sakk V, Pospiech J, Saller T, van Zant G, Wagner W, Geiger H. The lifespan quantitative trait locus gene Securin controls hematopoietic progenitor cell function. Haematologica 2020; 105:317-324. [PMID: 31073078 PMCID: PMC7012499 DOI: 10.3324/haematol.2018.213009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 05/09/2019] [Indexed: 12/11/2022] Open
Affiliation(s)
- Andreas Brown
- Institute of Molecular Medicine and Stem Cell Aging, Ulm University, Ulm, Germany
| | - Desiree Schuetz
- Institute of Molecular Medicine and Stem Cell Aging, Ulm University, Ulm, Germany
| | - Yang Han
- Helmholtz-Institute for Biomedical Engineering, Stem Cell Biology and Cellular Engineering, RWTH Aachen University Medical School, Aachen, Germany
| | - Deidre Daria
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, OH, USA
| | - Kalpana J Nattamai
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, OH, USA
| | - Karina Eiwen
- Institute of Molecular Medicine and Stem Cell Aging, Ulm University, Ulm, Germany
| | - Vadim Sakk
- Institute of Molecular Medicine and Stem Cell Aging, Ulm University, Ulm, Germany
| | - Johannes Pospiech
- Institute of Molecular Medicine and Stem Cell Aging, Ulm University, Ulm, Germany
| | - Thomas Saller
- Institute of Molecular Medicine and Stem Cell Aging, Ulm University, Ulm, Germany
| | - Gary van Zant
- University of Kentucky College of Medicine, UK Medical Center, Lexington, KY, USA
| | - Wolfgang Wagner
- Helmholtz-Institute for Biomedical Engineering, Stem Cell Biology and Cellular Engineering, RWTH Aachen University Medical School, Aachen, Germany
| | - Hartmut Geiger
- Institute of Molecular Medicine and Stem Cell Aging, Ulm University, Ulm, Germany .,Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, OH, USA
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Saçma M, Pospiech J, Bogeska R, de Back W, Mallm JP, Sakk V, Soller K, Marka G, Vollmer A, Karns R, Cabezas-Wallscheid N, Trumpp A, Méndez-Ferrer S, Milsom MD, Mulaw MA, Geiger H, Florian MC. Haematopoietic stem cells in perisinusoidal niches are protected from ageing. Nat Cell Biol 2019; 21:1309-1320. [PMID: 31685996 DOI: 10.1038/s41556-019-0418-y] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 09/30/2019] [Indexed: 12/11/2022]
Abstract
With ageing, intrinsic haematopoietic stem cell (HSC) activity decreases, resulting in impaired tissue homeostasis, reduced engraftment following transplantation and increased susceptibility to diseases. However, whether ageing also affects the HSC niche, and thereby impairs its capacity to support HSC function, is still widely debated. Here, by using in-vivo long-term label-retention assays we demonstrate that aged label-retaining HSCs, which are, in old mice, the most quiescent HSC subpopulation with the highest regenerative capacity and cellular polarity, reside predominantly in perisinusoidal niches. Furthermore, we demonstrate that sinusoidal niches are uniquely preserved in shape, morphology and number on ageing. Finally, we show that myeloablative chemotherapy can selectively disrupt aged sinusoidal niches in the long term, which is linked to the lack of recovery of endothelial Jag2 at sinusoids. Overall, our data characterize the functional alterations of the aged HSC niche and unveil that perisinusoidal niches are uniquely preserved and thereby protect HSCs from ageing.
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Affiliation(s)
- Mehmet Saçma
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Johannes Pospiech
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Ruzhica Bogeska
- Heidelberg Institute for Stem Cell Technology and Experimental Medicine gGmbH, Deutsches Krebsforschungszentrum, Division of Experimental Hematology, Heidelberg, Germany
| | - Walter de Back
- Institute for Medical Informatics and Biometry, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Jan-Philipp Mallm
- Deutsches Krebsforschungszentrum, Division of Chromatin Network, Heidelberg, Germany
| | - Vadim Sakk
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Karin Soller
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Gina Marka
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Angelika Vollmer
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
| | - Rebekah Karns
- Division of Gastroenterology, Hepatology, and Nutrition, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, OH, USA
| | | | - Andreas Trumpp
- Heidelberg Institute for Stem Cell Technology and Experimental Medicine gGmbH, Deutsches Krebsforschungszentrum, Division of Experimental Hematology, Heidelberg, Germany
| | - Simón Méndez-Ferrer
- Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute and Department of Hematology, University of Cambridge, Cambridge, United Kingdom
- National Health Service Blood & Transplant, Cambridge Biomedical Campus, Cambridge, United Kingdom
| | - Michael D Milsom
- Heidelberg Institute for Stem Cell Technology and Experimental Medicine gGmbH, Deutsches Krebsforschungszentrum, Division of Experimental Hematology, Heidelberg, Germany
| | - Medhanie A Mulaw
- Molecular Oncology Institute of Experimental Cancer Research, Medical Faculty, University of Ulm, Ulm, Germany
| | - Hartmut Geiger
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, OH, USA
| | - Maria Carolina Florian
- Institute of Molecular Medicine, Stem Cells and Aging, Aging Research Center, Ulm University, Ulm, Germany.
- Center for Regenerative Medicine in Barcelona, Bellvitge Institute for Biomedical Research, Barcelona, Spain.
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33
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Klenk J, Peter RS, Rapp K, Dallmeier D, Rothenbacher D, Denkinger M, Büchele G, Becker T, Böhm B, Scharffetter-Kochanek K, Stingl J, Koenig W, Riepe M, Peter R, Geiger H, Ludolph A, von Arnim C, Nagel G, Weinmayr G, Steinacker JM, Laszlo R. Lazy Sundays: role of day of the week and reactivity on objectively measured physical activity in older people. Eur Rev Aging Phys Act 2019; 16:18. [PMID: 31673299 PMCID: PMC6815398 DOI: 10.1186/s11556-019-0226-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 10/09/2019] [Indexed: 11/25/2022] Open
Abstract
Background The aim of this study was to assess the effect of day of the week and wearing a device (reactivity) on objectively measured physical activity (PA) in older people. Methods Walking duration as a measure for PA was recorded from 1333 German community-dwelling older people (≥65 years, 43.8% women) over 5 days using accelerometers (activPAL). Least-square means of PA with 95%-confidence intervals (95%-CI) from multi-level analysis were calculated for each day of the week and each measurement day (days after sensor attachment). Results Walking duration on Sundays was significantly lower compared to working days (Sunday vs. Monday-Friday: − 12.8 min (95%-CI: − 14.7; − 10.9)). No statistically significant difference compared to working days was present for Saturdays. The linear slope for measurement day and walking duration was marginal and not statistically significant. Conclusions Studies using PA sensors in older people should assess Sundays and working days to adequately determine the activity level of the participants.
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Affiliation(s)
- Jochen Klenk
- 1Institute of Epidemiology and Medical Biometry, Ulm University, Helmholtzstr 22, 89081 Ulm, Germany.,2Department of Clinical Gerontology, Robert-Bosch-Hospital, Auerbachstr 110, 70376 Stuttgart, Germany.,IB University of Applied Sciences Berlin, Study Center Stuttgart, Paulinenstraße 45, 70178 Stuttgart, Germany
| | - Raphael Simon Peter
- 1Institute of Epidemiology and Medical Biometry, Ulm University, Helmholtzstr 22, 89081 Ulm, Germany
| | - Kilian Rapp
- 2Department of Clinical Gerontology, Robert-Bosch-Hospital, Auerbachstr 110, 70376 Stuttgart, Germany
| | | | - Dietrich Rothenbacher
- 1Institute of Epidemiology and Medical Biometry, Ulm University, Helmholtzstr 22, 89081 Ulm, Germany
| | | | - Gisela Büchele
- 1Institute of Epidemiology and Medical Biometry, Ulm University, Helmholtzstr 22, 89081 Ulm, Germany
| | | | - T Becker
- 1Institute of Epidemiology and Medical Biometry, Ulm University, Helmholtzstr 22, 89081 Ulm, Germany.,2Department of Clinical Gerontology, Robert-Bosch-Hospital, Auerbachstr 110, 70376 Stuttgart, Germany.,IB University of Applied Sciences Berlin, Study Center Stuttgart, Paulinenstraße 45, 70178 Stuttgart, Germany.,Bethesda Geriatric Clinic, Zollernring 26, 89073 Ulm, Germany
| | - B Böhm
- 1Institute of Epidemiology and Medical Biometry, Ulm University, Helmholtzstr 22, 89081 Ulm, Germany.,2Department of Clinical Gerontology, Robert-Bosch-Hospital, Auerbachstr 110, 70376 Stuttgart, Germany.,IB University of Applied Sciences Berlin, Study Center Stuttgart, Paulinenstraße 45, 70178 Stuttgart, Germany.,Bethesda Geriatric Clinic, Zollernring 26, 89073 Ulm, Germany
| | - K Scharffetter-Kochanek
- 1Institute of Epidemiology and Medical Biometry, Ulm University, Helmholtzstr 22, 89081 Ulm, Germany.,2Department of Clinical Gerontology, Robert-Bosch-Hospital, Auerbachstr 110, 70376 Stuttgart, Germany.,IB University of Applied Sciences Berlin, Study Center Stuttgart, Paulinenstraße 45, 70178 Stuttgart, Germany.,Bethesda Geriatric Clinic, Zollernring 26, 89073 Ulm, Germany
| | - J Stingl
- 1Institute of Epidemiology and Medical Biometry, Ulm University, Helmholtzstr 22, 89081 Ulm, Germany.,2Department of Clinical Gerontology, Robert-Bosch-Hospital, Auerbachstr 110, 70376 Stuttgart, Germany.,IB University of Applied Sciences Berlin, Study Center Stuttgart, Paulinenstraße 45, 70178 Stuttgart, Germany.,Bethesda Geriatric Clinic, Zollernring 26, 89073 Ulm, Germany
| | - W Koenig
- 1Institute of Epidemiology and Medical Biometry, Ulm University, Helmholtzstr 22, 89081 Ulm, Germany.,2Department of Clinical Gerontology, Robert-Bosch-Hospital, Auerbachstr 110, 70376 Stuttgart, Germany.,IB University of Applied Sciences Berlin, Study Center Stuttgart, Paulinenstraße 45, 70178 Stuttgart, Germany.,Bethesda Geriatric Clinic, Zollernring 26, 89073 Ulm, Germany
| | - M Riepe
- 1Institute of Epidemiology and Medical Biometry, Ulm University, Helmholtzstr 22, 89081 Ulm, Germany.,2Department of Clinical Gerontology, Robert-Bosch-Hospital, Auerbachstr 110, 70376 Stuttgart, Germany.,IB University of Applied Sciences Berlin, Study Center Stuttgart, Paulinenstraße 45, 70178 Stuttgart, Germany.,Bethesda Geriatric Clinic, Zollernring 26, 89073 Ulm, Germany
| | - R Peter
- 1Institute of Epidemiology and Medical Biometry, Ulm University, Helmholtzstr 22, 89081 Ulm, Germany.,2Department of Clinical Gerontology, Robert-Bosch-Hospital, Auerbachstr 110, 70376 Stuttgart, Germany.,IB University of Applied Sciences Berlin, Study Center Stuttgart, Paulinenstraße 45, 70178 Stuttgart, Germany.,Bethesda Geriatric Clinic, Zollernring 26, 89073 Ulm, Germany
| | - H Geiger
- 1Institute of Epidemiology and Medical Biometry, Ulm University, Helmholtzstr 22, 89081 Ulm, Germany.,2Department of Clinical Gerontology, Robert-Bosch-Hospital, Auerbachstr 110, 70376 Stuttgart, Germany.,IB University of Applied Sciences Berlin, Study Center Stuttgart, Paulinenstraße 45, 70178 Stuttgart, Germany.,Bethesda Geriatric Clinic, Zollernring 26, 89073 Ulm, Germany
| | - A Ludolph
- 1Institute of Epidemiology and Medical Biometry, Ulm University, Helmholtzstr 22, 89081 Ulm, Germany.,2Department of Clinical Gerontology, Robert-Bosch-Hospital, Auerbachstr 110, 70376 Stuttgart, Germany.,IB University of Applied Sciences Berlin, Study Center Stuttgart, Paulinenstraße 45, 70178 Stuttgart, Germany.,Bethesda Geriatric Clinic, Zollernring 26, 89073 Ulm, Germany
| | - C von Arnim
- 1Institute of Epidemiology and Medical Biometry, Ulm University, Helmholtzstr 22, 89081 Ulm, Germany.,2Department of Clinical Gerontology, Robert-Bosch-Hospital, Auerbachstr 110, 70376 Stuttgart, Germany.,IB University of Applied Sciences Berlin, Study Center Stuttgart, Paulinenstraße 45, 70178 Stuttgart, Germany.,Bethesda Geriatric Clinic, Zollernring 26, 89073 Ulm, Germany
| | - G Nagel
- 1Institute of Epidemiology and Medical Biometry, Ulm University, Helmholtzstr 22, 89081 Ulm, Germany.,2Department of Clinical Gerontology, Robert-Bosch-Hospital, Auerbachstr 110, 70376 Stuttgart, Germany.,IB University of Applied Sciences Berlin, Study Center Stuttgart, Paulinenstraße 45, 70178 Stuttgart, Germany.,Bethesda Geriatric Clinic, Zollernring 26, 89073 Ulm, Germany
| | - G Weinmayr
- 1Institute of Epidemiology and Medical Biometry, Ulm University, Helmholtzstr 22, 89081 Ulm, Germany.,2Department of Clinical Gerontology, Robert-Bosch-Hospital, Auerbachstr 110, 70376 Stuttgart, Germany.,IB University of Applied Sciences Berlin, Study Center Stuttgart, Paulinenstraße 45, 70178 Stuttgart, Germany.,Bethesda Geriatric Clinic, Zollernring 26, 89073 Ulm, Germany
| | - J M Steinacker
- 1Institute of Epidemiology and Medical Biometry, Ulm University, Helmholtzstr 22, 89081 Ulm, Germany.,2Department of Clinical Gerontology, Robert-Bosch-Hospital, Auerbachstr 110, 70376 Stuttgart, Germany.,IB University of Applied Sciences Berlin, Study Center Stuttgart, Paulinenstraße 45, 70178 Stuttgart, Germany.,Bethesda Geriatric Clinic, Zollernring 26, 89073 Ulm, Germany
| | - R Laszlo
- 1Institute of Epidemiology and Medical Biometry, Ulm University, Helmholtzstr 22, 89081 Ulm, Germany.,2Department of Clinical Gerontology, Robert-Bosch-Hospital, Auerbachstr 110, 70376 Stuttgart, Germany.,IB University of Applied Sciences Berlin, Study Center Stuttgart, Paulinenstraße 45, 70178 Stuttgart, Germany.,Bethesda Geriatric Clinic, Zollernring 26, 89073 Ulm, Germany
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Hochstetler CL, Feng Y, Sacma M, Davis AK, Rao M, Kuan CY, You LR, Geiger H, Zheng Y. KRas G12D expression in the bone marrow vascular niche affects hematopoiesis with inflammatory signals. Exp Hematol 2019; 79:3-15.e4. [PMID: 31669153 DOI: 10.1016/j.exphem.2019.10.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 10/14/2019] [Accepted: 10/16/2019] [Indexed: 12/12/2022]
Abstract
The bone marrow (BM) niche is an important milieu where hematopoietic stem and progenitor cells (HSPCs) are maintained. Previous studies have indicated that genetic mutations in various components of the niche can affect hematopoiesis and promote hematologic abnormalities, but the impact of abnormal BM endothelial cells (BMECs), a crucial niche component, on hematopoiesis remains incompletely understood. To dissect how genetic alterations in BMECs could affect hematopoiesis, we have employed a novel inducible Tie2-CreERT2 mouse model, with a tdTomato fluorescent reporter, to introduce an oncogenic KRasG12D mutation specifically in the adult endothelial cells. Tie2-CreERT2;KRasG12D mice had significantly more leukocytes and myeloid cells in the blood with mostly normal BM HSPC populations and developed splenomegaly. Genotyping polymerase chain reaction revealed KRasG12D activation in BMECs but not hematopoietic cells, confirming that the phenotype is due to the aberrant BMECs. Competitive transplant assays revealed that BM cells from the KRasG12D mice contained significantly fewer functional hematopoietic stem cells, and immunofluorescence imaging showed that the hematopoietic stem cells in the mutant mice were localized farther away from BM vasculature and closer to the endosteal area. RNA sequencing analyses found an inflammatory gene network, especially tumor necrosis factor α, as a possible contributor. Together, our results implicate an abnormal endothelial niche in compromising normal hematopoiesis.
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Affiliation(s)
- Cindy L Hochstetler
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pathology and Laboratory Medicine, University of Cincinnati, Cincinnati, Ohio
| | - Yuxin Feng
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Mehmet Sacma
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | - Ashley K Davis
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Mahil Rao
- Division of Pediatric Critical Care, Department of Pediatrics, Stanford University, Stanford, California
| | - Chia-Yi Kuan
- Department of Neuroscience, University of Virginia, Charlottesville, Virginia
| | - Li-Ru You
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei, Taiwan; Cancer Progression Research Center, National Yang-Ming University, Taipei, Taiwan
| | - Hartmut Geiger
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | - Yi Zheng
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pathology and Laboratory Medicine, University of Cincinnati, Cincinnati, Ohio.
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35
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Vogel M, Moehrle B, Brown A, Eiwen K, Sakk V, Geiger H. HPRT and Purine Salvaging Are Critical for Hematopoietic Stem Cell Function. Stem Cells 2019; 37:1606-1614. [PMID: 31574190 DOI: 10.1002/stem.3087] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 08/23/2019] [Indexed: 12/17/2022]
Abstract
Adult hematopoietic stem cells (HSCs) maintain tissue homeostasis and regenerative capacity of the hematopoietic system through self-renewal and differentiation. Metabolism is recognized as an important regulatory entity controlling stem cells. As purine nucleotides are essential for metabolic functions, we analyzed the role of hypoxanthine guanine phosphoribosyl transferase (HPRT)-associated purine salvaging in HSCs. Here, we demonstrate that hematopoietic stem and progenitor cells (HSPCs) show a strong dependence on HPRT-associated purine salvaging. HSPCs with lower HPRT activity had a severely reduced competitive repopulation ability upon transplantation. Strikingly, HPRT deficiency resulted in altered cell-cycle progression, proliferation kinetics and mitochondrial membrane potential primarily in the HSC compartment, whereas more committed progenitors were less affected. Our data thus imply a unique and important role of HPRT and the purine salvage pathway for HSC function. Stem Cells 2019;37:1606-1614.
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Affiliation(s)
- Mona Vogel
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Bettina Moehrle
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Andreas Brown
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Karina Eiwen
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Vadim Sakk
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Hartmut Geiger
- Institute of Molecular Medicine, Ulm University, Ulm, Germany.,Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, Ohio, USA
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36
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Agrawal M, Schwarz P, Giaimo BD, Bedzhov I, Corbacioglu A, Weber D, Gaidzik VI, Jahn N, Rücker FG, Schroeder T, Kindler T, Wattad M, Götze K, Lübbert M, Salwender H, Ringhoffer M, Lange E, Koller E, Thol F, Heuser M, Ganser A, Bullinger L, Paschka P, Döhner H, Geiger H, Borggrefe T, Döhner K, Oswald F. Functional and clinical characterization of the alternatively spliced isoform AML1-ETO9a in adult patients with translocation t(8;21)(q22;q22.1) acute myeloid leukemia (AML). Leukemia 2019; 34:630-634. [PMID: 31462736 PMCID: PMC7214266 DOI: 10.1038/s41375-019-0551-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 05/29/2019] [Accepted: 06/06/2019] [Indexed: 12/04/2022]
Affiliation(s)
- Mridul Agrawal
- Klinik für Innere Medizin III, Universitätsklinikum Ulm, Ulm, Germany
| | - Peggy Schwarz
- Klinik für Innere Medizin I, Universitätsklinikum Ulm, Ulm, Germany
| | | | - Ivan Bedzhov
- Embryonic Self-Organization research group, Max Planck Institute for Molecular Biomedicine, Röntgenstraße 20, 48149, Münster, Germany
| | | | - Daniela Weber
- Klinik für Innere Medizin III, Universitätsklinikum Ulm, Ulm, Germany
| | - Verena I Gaidzik
- Klinik für Innere Medizin III, Universitätsklinikum Ulm, Ulm, Germany
| | - Nikolaus Jahn
- Klinik für Innere Medizin III, Universitätsklinikum Ulm, Ulm, Germany
| | - Frank G Rücker
- Klinik für Innere Medizin III, Universitätsklinikum Ulm, Ulm, Germany
| | - Thomas Schroeder
- Klinik für Hämatologie, Onkologie und Klinische Immunologie, Universitätsklinikum Düsseldorf, Düsseldorf, Germany
| | - Thomas Kindler
- III. Medizinische Klinik und Poliklinik, Universitätsmedizin Mainz, Mainz, Germany
| | - Mohammed Wattad
- Klinik für Hämatologie, Internistische Onkologie und Stammzellentransplantation, Evangelisches Krankenhaus Essen-Werden, Essen, Germany
| | - Katharina Götze
- III. Medizinische Klinik, Klinikum rechts der Isar der Technischen Universität München, München, Germany
| | - Michael Lübbert
- Klinik für Innere Medizin I, Universitätsklinikum Freiburg, Freiburg, Germany
| | - Hans Salwender
- II. Medizinische Abteilung, Asklepios Klinik Altona, Hamburg, Germany
| | - Mark Ringhoffer
- Medizinische Klinik III, Städtisches Klinikum Karlsruhe, Karlsruhe, Germany
| | - Elisabeth Lange
- Klinik für Hämatologie, Onkologie und Palliativmedizin, Evangelisches Krankenhaus Hamm, Hamm, Germany
| | - Elisabeth Koller
- Medizinische Abteilung, Hanusch-Krankenhaus der WGKK, Wien, Austria
| | - Felicitas Thol
- Klinik für Hämatologie, Hämostaseologie, Onkologie und Stammzelltransplantation, Medizinische Hochschule Hannover, Hannover, Germany
| | - Michael Heuser
- Klinik für Hämatologie, Hämostaseologie, Onkologie und Stammzelltransplantation, Medizinische Hochschule Hannover, Hannover, Germany
| | - Arnold Ganser
- Klinik für Hämatologie, Hämostaseologie, Onkologie und Stammzelltransplantation, Medizinische Hochschule Hannover, Hannover, Germany
| | - Lars Bullinger
- Medizinische Klinik m. S. Hämatologie, Onkologie und Tumorimmunologie, Campus Virchow-Klinikum, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Peter Paschka
- Klinik für Innere Medizin III, Universitätsklinikum Ulm, Ulm, Germany
| | - Hartmut Döhner
- Klinik für Innere Medizin III, Universitätsklinikum Ulm, Ulm, Germany
| | - Hartmut Geiger
- Institut für Molekulare Medizin, Universität Ulm, Ulm, Germany.,Division of Experimental Hematology and Cancer Biology, CCHMC, Cincinnati, OH, USA
| | - Tilman Borggrefe
- Institute of Biochemistry, University of Giessen, Giessen, Germany
| | - Konstanze Döhner
- Klinik für Innere Medizin III, Universitätsklinikum Ulm, Ulm, Germany.
| | - Franz Oswald
- Klinik für Innere Medizin I, Universitätsklinikum Ulm, Ulm, Germany
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37
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Zhang C, Fondufe-Mittendorf YN, Wang C, Chen J, Cheng Q, Zhou D, Zheng Y, Geiger H, Liang Y. Latexin regulation by HMGB2 is required for hematopoietic stem cell maintenance. Haematologica 2019; 105:573-584. [PMID: 31171637 PMCID: PMC7049332 DOI: 10.3324/haematol.2018.207092] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 06/05/2019] [Indexed: 01/12/2023] Open
Abstract
Hematopoietic stem cells provide life-long production of blood cells and undergo self-renewal division in order to sustain the stem cell pool. Homeostatic maintenance of hematopoietic stem cell pool and blood cell production is vital for the organism to survive. We previously reported that latexin is a negative regulator of hematopoietic stem cells in mice. Its natural variation in the expression is inversely correlated with hematopoietic stem cell number. However, the molecular mechanisms regulating latexin transcription remain largely unknown, and the genetic factors contributing to its natural variation are not clearly defined. Here we discovered a chromatin protein, high-mobility group protein B2, as a novel transcriptional suppressor of latexin by using DNA pull-down and mass spectrometry. High-mobility group protein B2 knockdown increases latexin expression at transcript and protein levels, and decreases hematopoietic stem cell number and regeneration capacity in vivo. Concomitant blockage of latexin activation significantly reverses these phenotypic changes, suggesting that latexin is one of the downstream targets and functional mediators of high-mobility group protein B2. We further identified a functional single nucleotide polymorphism, rs31528793, in the latexin promoter that binds to high-mobility group protein B2 and affects the promoter activity. G allelic variation in rs31528793 associates with the higher latexin expression and lower hematopoietic stem cell number, whereas C allele indicates the lower latexin expression and higher stem cell number. This study reveals for the first time that latexin transcription is regulated by both transacting (high-mobility group protein B2) and cis-acting (single nucleotide polymorphism rs31528793) factors. It uncovers the functional role of naturally occurring genetic variants, in combination with epigenetic regulator, in determining differential gene expression and phenotypic diversity in the hematopoietic stem cell population.
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Affiliation(s)
- Cuiping Zhang
- Departments of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, USA
| | | | - Chi Wang
- Department of Cancer Biostatistics, University of Kentucky, Lexington, KY, USA
| | - Jin Chen
- Department of Internal Medicine and Computer Science, University of Kentucky, Lexington, KY, USA
| | - Qiang Cheng
- Department of Internal Medicine and Computer Science, University of Kentucky, Lexington, KY, USA
| | - Daohong Zhou
- Department of Pharmacodynamics, University of Florida, Gainesville, FL, USA
| | - Yi Zheng
- Cincinnati Children's Hospital Medical Center, Experimental Hematology and Cancer Biology, Cincinnati, OH, USA
| | - Hartmut Geiger
- Cincinnati Children's Hospital Medical Center, Experimental Hematology and Cancer Biology, Cincinnati, OH, USA.,Institute for Molecular Medicine, University of Ulm, Ulm, Germany
| | - Ying Liang
- Departments of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, USA
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38
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Klose M, Florian MC, Gerbaulet A, Geiger H, Glauche I. Hematopoietic Stem Cell Dynamics Are Regulated by Progenitor Demand: Lessons from a Quantitative Modeling Approach. Stem Cells 2019; 37:948-957. [PMID: 30897261 DOI: 10.1002/stem.3005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 02/08/2019] [Accepted: 03/02/2019] [Indexed: 12/18/2022]
Abstract
The prevailing view on murine hematopoiesis and on hematopoietic stem cells (HSCs) in particular derives from experiments that are related to regeneration after irradiation and HSC transplantation. However, over the past years, different experimental techniques have been developed to investigate hematopoiesis under homeostatic conditions, thereby providing access to proliferation and differentiation rates of hematopoietic stem and progenitor cells in the unperturbed situation. Moreover, it has become clear that hematopoiesis undergoes distinct changes during aging with large effects on HSC abundance, lineage contribution, asymmetry of division, and self-renewal potential. However, it is currently not fully resolved how stem and progenitor cells interact to respond to varying demands and how this balance is altered by an aging-induced shift in HSC polarity. Aiming toward a conceptual understanding, we introduce a novel in silico model to investigate the dynamics of HSC response to varying demand. By introducing an internal feedback within a heterogeneous HSC population, the model is suited to consistently describe both hematopoietic homeostasis and regeneration, including the limited regulation of HSCs in the homeostatic situation. The model further explains the age-dependent increase in phenotypic HSCs as a consequence of the cells' inability to preserve divisional asymmetry. Our model suggests a dynamically regulated population of intrinsically asymmetrically dividing HSCs as suitable control mechanism that adheres with many qualitative and quantitative findings on hematopoietic recovery after stress and aging. The modeling approach thereby illustrates how a mathematical formalism can support both the conceptual and the quantitative understanding of regulatory principles in HSC biology.
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Affiliation(s)
- Markus Klose
- Institute for Medical Informatics and Biometry, Carl Gustav Carus Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Maria Carolina Florian
- Center for Regenerative Medicine in Barcelona (CMRB), Bellvitge Biomedical Research Institute (IDIBELL), Hospital Duran i Reynals, Barcelona, Spain.,Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | - Alexander Gerbaulet
- Institute for Immunology, Carl Gustav Carus Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Hartmut Geiger
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany.,Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, USA
| | - Ingmar Glauche
- Institute for Medical Informatics and Biometry, Carl Gustav Carus Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
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Ovadya Y, Landsberger T, Leins H, Vadai E, Gal H, Biran A, Yosef R, Sagiv A, Agrawal A, Shapira A, Windheim J, Tsoory M, Schirmbeck R, Amit I, Geiger H, Krizhanovsky V. Impaired immune surveillance accelerates accumulation of senescent cells and aging. Nat Commun 2018; 9:5435. [PMID: 30575733 PMCID: PMC6303397 DOI: 10.1038/s41467-018-07825-3] [Citation(s) in RCA: 283] [Impact Index Per Article: 47.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 11/26/2018] [Indexed: 02/06/2023] Open
Abstract
Cellular senescence is a stress response that imposes stable cell-cycle arrest in damaged cells, preventing their propagation in tissues. However, senescent cells accumulate in tissues in advanced age, where they might promote tissue degeneration and malignant transformation. The extent of immune-system involvement in regulating age-related accumulation of senescent cells, and its consequences, are unknown. Here we show that Prf1-/- mice with impaired cell cytotoxicity exhibit both higher senescent-cell tissue burden and chronic inflammation. They suffer from multiple age-related disorders and lower survival. Strikingly, pharmacological elimination of senescent-cells by ABT-737 partially alleviates accelerated aging phenotype in these mice. In LMNA+/G609G progeroid mice, impaired cell cytotoxicity further promotes senescent-cell accumulation and shortens lifespan. ABT-737 administration during the second half of life of these progeroid mice abrogates senescence signature and increases median survival. Our findings shed new light on mechanisms governing senescent-cell presence in aging, and could motivate new strategies for regenerative medicine.
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Affiliation(s)
- Yossi Ovadya
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 76100, Rehovot, Israel
| | - Tomer Landsberger
- Department of Immunology, The Weizmann Institute of Science, 76100, Rehovot, Israel
| | - Hanna Leins
- Institute of Molecular Medicine, Stem Cell and Aging, Ulm University, Ulm, 89081, Germany.,Department of Internal Medicine I, University Hospital of Ulm, Ulm, 89081, Germany
| | - Ezra Vadai
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 76100, Rehovot, Israel
| | - Hilah Gal
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 76100, Rehovot, Israel
| | - Anat Biran
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 76100, Rehovot, Israel
| | - Reut Yosef
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 76100, Rehovot, Israel
| | - Adi Sagiv
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 76100, Rehovot, Israel
| | - Amit Agrawal
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 76100, Rehovot, Israel
| | - Alon Shapira
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 76100, Rehovot, Israel
| | - Joseph Windheim
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 76100, Rehovot, Israel
| | - Michael Tsoory
- Department of Veterinary Resources, The Weizmann Institute of Science, 76100, Rehovot, Israel
| | - Reinhold Schirmbeck
- Department of Internal Medicine I, University Hospital of Ulm, Ulm, 89081, Germany
| | - Ido Amit
- Department of Immunology, The Weizmann Institute of Science, 76100, Rehovot, Israel
| | - Hartmut Geiger
- Institute of Molecular Medicine, Stem Cell and Aging, Ulm University, Ulm, 89081, Germany.,Experimental Hematology and Cancer Biology Cincinnati Children's Hospital Medical Center, 45229, Cincinnati, OH, USA
| | - Valery Krizhanovsky
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 76100, Rehovot, Israel.
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40
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Grigoryan A, Guidi N, Senger K, Liehr T, Soller K, Marka G, Vollmer A, Markaki Y, Leonhardt H, Buske C, Lipka DB, Plass C, Zheng Y, Mulaw MA, Geiger H, Florian MC. LaminA/C regulates epigenetic and chromatin architecture changes upon aging of hematopoietic stem cells. Genome Biol 2018; 19:189. [PMID: 30404662 PMCID: PMC6223039 DOI: 10.1186/s13059-018-1557-3] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 10/04/2018] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND The decline of hematopoietic stem cell (HSC) function upon aging contributes to aging-associated immune remodeling and leukemia pathogenesis. Aged HSCs show changes to their epigenome, such as alterations in DNA methylation and histone methylation and acetylation landscapes. We previously showed a correlation between high Cdc42 activity in aged HSCs and the loss of intranuclear epigenetic polarity, or epipolarity, as indicated by the specific distribution of H4K16ac. RESULTS Here, we show that not all histone modifications display a polar localization and that a reduction in H4K16ac amount and loss of epipolarity are specific to aged HSCs. Increasing the levels of H4K16ac is not sufficient to restore polarity in aged HSCs and the restoration of HSC function. The changes in H4K16ac upon aging and rejuvenation of HSCs are correlated with a change in chromosome 11 architecture and alterations in nuclear volume and shape. Surprisingly, by taking advantage of knockout mouse models, we demonstrate that increased Cdc42 activity levels correlate with the repression of the nuclear envelope protein LaminA/C, which controls chromosome 11 distribution, H4K16ac polarity, and nuclear volume and shape in aged HSCs. CONCLUSIONS Collectively, our data show that chromatin architecture changes in aged stem cells are reversible by decreasing the levels of Cdc42 activity, revealing an unanticipated way to pharmacologically target LaminA/C expression and revert alterations of the epigenetic architecture in aged HSCs.
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Affiliation(s)
- Ani Grigoryan
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081, Ulm, Germany
| | - Novella Guidi
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081, Ulm, Germany
| | - Katharina Senger
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081, Ulm, Germany
| | - Thomas Liehr
- Institute of Human Genetics, Jena University Hospital, Friedrich Schiller University, Kollegiengasse 10, 07743, Jena, Germany
| | - Karin Soller
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081, Ulm, Germany
| | - Gina Marka
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081, Ulm, Germany
| | - Angelika Vollmer
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081, Ulm, Germany
| | - Yolanda Markaki
- Department of Biology II and Center for Integrated Protein Science Munich (CIPSM), Ludwig Maximilians University Munich, Großhaderner Strasse 2, 82152, Planegg-Martinsried, Germany
| | - Heinrich Leonhardt
- Department of Biology II and Center for Integrated Protein Science Munich (CIPSM), Ludwig Maximilians University Munich, Großhaderner Strasse 2, 82152, Planegg-Martinsried, Germany
| | - Christian Buske
- Institute of Experimental Cancer Research, Comprehensive Cancer Center Ulm, University Hospital Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Daniel B Lipka
- Regulation of Cellular Differentiation Group, INF280, 69120, Heidelberg, Germany
- Division of Epigenomics and Cancer Risk Factors, German Cancer Research Center (DKFZ), INF280, 69120, Heidelberg, Germany
| | - Christoph Plass
- Division of Epigenomics and Cancer Risk Factors, German Cancer Research Center (DKFZ), INF280, 69120, Heidelberg, Germany
| | - Yi Zheng
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, OH, USA
| | - Medhanie A Mulaw
- Institute of Experimental Cancer Research, Comprehensive Cancer Center Ulm, University Hospital Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Hartmut Geiger
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081, Ulm, Germany
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, OH, USA
| | - Maria Carolina Florian
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Albert-Einstein-Allee 11c, 89081, Ulm, Germany.
- Center of Regenerative Medicine in Barcelona (CMRB), Hospital Duran i Reynals, Gran Via de l'Hospitalet, 199-203, L'Hospitalet de Llobregat, 08908, Barcelona, Spain.
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Abstract
In our study we investigated 36 out-patients with renal disease, 22 of whom were hypertensive. In all patients proteinuria was present (4.30 ± 5.05 g protein/day) and kidney diseases were verified by renal biopsy. Blood cadmium in non-smokers was significantly (p< 0.05) lower than in smokers. We found a positive correlation between cadmium-concentration of blood and urine (p<0.01, R = 0.44) and between cadmium-concentration of blood and blood uric acid (p< 0.01, R = 0.44). Proteinuria was weakly correlated with cadmium concentration of urine (p<0.05, R = 0.35). Patients with renal hypertension showed a significantly higher (p< 0.05) urine cadmium excretion per day (1.60 ± 1.12 μg/day) compared to normotensives with a disease of the kidney (1.14 ± 1.47 μg/day). Our results indicate that cadmium may be involved in the development of hypertension in patients with renal disease.
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Affiliation(s)
- H. Geiger
- University of Wuerzburg, Department of Medicine, Division of Nephrology, Wuerzburg - FRG
| | - U. Bahner
- University of Wuerzburg, Department of Medicine, Division of Nephrology, Wuerzburg - FRG
| | - A. Heidland
- University of Wuerzburg, Department of Medicine, Division of Nephrology, Wuerzburg - FRG
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42
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Brown A, Geiger H. Chromosome integrity checkpoints in stem and progenitor cells: transitions upon differentiation, pathogenesis, and aging. Cell Mol Life Sci 2018; 75:3771-3779. [PMID: 30066086 PMCID: PMC6154040 DOI: 10.1007/s00018-018-2891-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 01/19/2018] [Revised: 07/22/2018] [Accepted: 07/25/2018] [Indexed: 01/30/2023]
Abstract
Loss of chromosome integrity is a major contributor to cancer. Checkpoints within the cell division cycle that facilitate the accuracy and outcome of chromosome segregation are thus critical pathways for preserving chromosome integrity and preventing chromosomal instability. The spindle assembly checkpoint, the decatenation checkpoint and the post-mitotic tetraploidy checkpoint ensure the appropriate establishment of the spindle apparatus, block mitotic entry upon entanglement of chromosomes or prevent further progression of post-mitotic cells that display massive spindle defects. Most of our knowledge on these mechanisms originates from studies conducted in yeast, cancer cell lines and differentiated cells. Considering that in many instances cancer derives from transformed stem and progenitor cells, our knowledge on these checkpoints in these cells just started to emerge. With this review, we provide a general overview of the current knowledge of these checkpoints in embryonic as well as in adult stem and progenitor cells with a focus on the hematopoietic system and outline common mis-regulations of their function associated with cancer and leukemia. Most cancers are aging-associated diseases. We will thus also discuss changes in the function and outcome of these checkpoints upon aging of stem and progenitor cells.
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Affiliation(s)
- Andreas Brown
- Institute of Molecular Medicine, Ulm University, Life Science Building N27, James Franck-Ring/Meyerhofstrasse, 89081, Ulm, Germany
| | - Hartmut Geiger
- Institute of Molecular Medicine, Ulm University, Life Science Building N27, James Franck-Ring/Meyerhofstrasse, 89081, Ulm, Germany.
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH, 45229, USA.
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43
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Liu W, Du W, Shang X, Wang L, Evelyn C, Florian MC, A Ryan M, Rayes A, Zhao X, Setchell K, Meller J, Guo F, Nassar N, Geiger H, Pang Q, Zheng Y. Rational identification of a Cdc42 inhibitor presents a new regimen for long-term hematopoietic stem cell mobilization. Leukemia 2018; 33:749-761. [PMID: 30254339 DOI: 10.1038/s41375-018-0251-5] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Revised: 07/19/2018] [Accepted: 08/14/2018] [Indexed: 01/04/2023]
Abstract
Mobilization of hematopoietic stem cells (HSCs) from bone marrow (BM) to peripheral blood (PB) by cytokine granulocyte colony-stimulating factor (G-CSF) or the chemical antagonist of CXCR4, AMD3100, is important in the treatment of blood diseases. Due to clinical conditions of each application, there is a need for continued improvement of HSC mobilization regimens. Previous studies have shown that genetic ablation of the Rho GTPase Cdc42 in HSCs results in their mobilization without affecting survival. Here we rationally identified a Cdc42 activity-specific inhibitor (CASIN) that can bind to Cdc42 with submicromolar affinity and competitively interfere with guanine nucleotide exchange activity. CASIN inhibits intracellular Cdc42 activity specifically and transiently to induce murine hematopoietic stem/progenitor cell egress from the BM by suppressing actin polymerization, adhesion, and directional migration of stem/progenitor cells, conferring Cdc42 knockout phenotypes. We further show that, although, CASIN administration to mice mobilizes similar number of phenotypic HSCs as AMD3100, it produces HSCs with better long-term reconstitution potential than that by AMD3100. Our work validates a specific small molecule inhibitor for Cdc42, and demonstrates that signaling molecules downstream of cytokines and chemokines, such as Cdc42, constitute a useful target for long-term stem cell mobilization.
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Affiliation(s)
- Wei Liu
- Cancer and Blood Diseases Institute, University of Cincinnati, Cincinnati, OH, 45229, USA
| | - Wei Du
- Department of Pharmaceutical Sciences, West Virginia University School of Pharmacy, Morgantown, WV, 26506, USA
| | - Xun Shang
- Cancer and Blood Diseases Institute, University of Cincinnati, Cincinnati, OH, 45229, USA
| | - Lei Wang
- Cancer and Blood Diseases Institute, University of Cincinnati, Cincinnati, OH, 45229, USA
| | - Chris Evelyn
- Cancer and Blood Diseases Institute, University of Cincinnati, Cincinnati, OH, 45229, USA
| | | | - Marnie A Ryan
- Cancer and Blood Diseases Institute, University of Cincinnati, Cincinnati, OH, 45229, USA
| | - Ahmad Rayes
- Cancer and Blood Diseases Institute, University of Cincinnati, Cincinnati, OH, 45229, USA
| | - Xueheng Zhao
- Division of Pathology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Kenneth Setchell
- Division of Pathology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Jarek Meller
- Division of Biomedical Informatics, Children's Hospital Medical Center, University of Cincinnati, Cincinnati, OH, 45229, USA
| | - Fukun Guo
- Cancer and Blood Diseases Institute, University of Cincinnati, Cincinnati, OH, 45229, USA
| | - Nicolas Nassar
- Cancer and Blood Diseases Institute, University of Cincinnati, Cincinnati, OH, 45229, USA
| | - Hartmut Geiger
- Cancer and Blood Diseases Institute, University of Cincinnati, Cincinnati, OH, 45229, USA.,Institute of Molecular Medicine, University of Ulm, Ulm, Germany
| | - Qishen Pang
- Cancer and Blood Diseases Institute, University of Cincinnati, Cincinnati, OH, 45229, USA
| | - Yi Zheng
- Cancer and Blood Diseases Institute, University of Cincinnati, Cincinnati, OH, 45229, USA.
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44
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Florian MC, Klose M, Sacma M, Jablanovic J, Knudson L, Nattamai KJ, Marka G, Vollmer A, Soller K, Sakk V, Cabezas-Wallscheid N, Zheng Y, Mulaw MA, Glauche I, Geiger H. Aging alters the epigenetic asymmetry of HSC division. PLoS Biol 2018; 16:e2003389. [PMID: 30235201 PMCID: PMC6168157 DOI: 10.1371/journal.pbio.2003389] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 10/02/2018] [Accepted: 08/23/2018] [Indexed: 01/01/2023] Open
Abstract
Hematopoietic stem cells (HSCs) balance self-renewal and differentiation to maintain homeostasis. With aging, the frequency of polar HSCs decreases. Cell polarity in HSCs is controlled by the activity of the small RhoGTPase cell division control protein 42 (Cdc42). Here we demonstrate—using a comprehensive set of paired daughter cell analyses that include single-cell 3D confocal imaging, single-cell transplants, single-cell RNA-seq, and single-cell transposase-accessible chromatin sequencing (ATAC-seq)—that the outcome of HSC divisions is strongly linked to the polarity status before mitosis, which is in turn determined by the level of the activity Cdc42 in stem cells. Aged apolar HSCs undergo preferentially self-renewing symmetric divisions, resulting in daughter stem cells with reduced regenerative capacity and lymphoid potential, while young polar HSCs undergo preferentially asymmetric divisions. Mathematical modeling in combination with experimental data implies a mechanistic role of the asymmetric sorting of Cdc42 in determining the potential of daughter cells via epigenetic mechanisms. Therefore, molecules that control HSC polarity might serve as modulators of the mode of stem cell division regulating the potential of daughter cells. Stem cells are unique cells that can differentiate to produce more stem cells or other types of cells and can divide both symmetrically (to produce daughter cells with the same fate) and asymmetrically (to produce one daughter cell that retains stem cell potential and one that differentiates). The mechanisms that control the outcome of stem cell divisions have been the focus of many studies; however, they remain mainly unknown. Here, we have analyzed these mechanisms in murine hematopoietic stem cells (HSCs) by directly comparing the epigenetic signature, the transcriptome, and the function of the two daughter cells stemming from the first division of either a young or an aged HSC. We observe that, while young HSCs divide mainly asymmetrically, aged HSCs divide primarily symmetrically. We find that the mode of division is tightly linked to stem cell polarity and is regulated by the activity level of the small RhoGTPase cell division control protein 42 (Cdc42). In addition, we show that the potential of daughter cells is further linked to the amount of the epigenetic mark H4K16ac and also to the amount of open chromatin allocated to a daughter cell, but it is not linked to its transcriptome. In summary, our study suggests that HSC polarity linked to Cdc42 activity drives the mode of division, while epigenetic mechanisms determine the functional outcome of the stem cell division.
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Affiliation(s)
- M. Carolina Florian
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
- * E-mail: (MCF); (HG)
| | - Markus Klose
- Institute for Medical Informatics and Biometry, Carl Gustav Carus Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Mehmet Sacma
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | - Jelena Jablanovic
- Max Planck Institute (MPI) of Immunobiology and Epigenetics, Freiburg, Germany
| | - Luke Knudson
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | - Kalpana J. Nattamai
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Gina Marka
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | - Angelika Vollmer
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | - Karin Soller
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | - Vadim Sakk
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | | | - Yi Zheng
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Medhanie A. Mulaw
- Institute of Experimental Cancer Research, Medical Faculty, University of Ulm, Ulm, Germany
| | - Ingmar Glauche
- Institute for Medical Informatics and Biometry, Carl Gustav Carus Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Hartmut Geiger
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
- * E-mail: (MCF); (HG)
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45
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Du W, Liu W, Mizukawa B, Shang X, Sipple J, Wunderlich M, Geiger H, Davies S, Mulloy J, Pang Q, Zheng Y. A non-myeloablative conditioning approach for long-term engraftment of human and mouse hematopoietic stem cells. Leukemia 2018; 32:2041-2046. [PMID: 29959415 PMCID: PMC6128741 DOI: 10.1038/s41375-018-0200-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 06/01/2018] [Accepted: 06/07/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Wei Du
- Cancer and Blood Diseases Institute, Molecular and Developmental Biology Graduate Program, Children's Hospital Research Foundation, 3333 Burnet Avenue, Cincinnati, OH, 45229, USA.
- Department of Pharmaceutical Sciences, West Virginia University School of Pharmacy, 1 Medical Center Dr., Morgantown, WV, 26506, USA.
| | - Wei Liu
- Cancer and Blood Diseases Institute, Molecular and Developmental Biology Graduate Program, Children's Hospital Research Foundation, 3333 Burnet Avenue, Cincinnati, OH, 45229, USA
| | - Benjamin Mizukawa
- Cancer and Blood Diseases Institute, Molecular and Developmental Biology Graduate Program, Children's Hospital Research Foundation, 3333 Burnet Avenue, Cincinnati, OH, 45229, USA
| | - Xun Shang
- Cancer and Blood Diseases Institute, Molecular and Developmental Biology Graduate Program, Children's Hospital Research Foundation, 3333 Burnet Avenue, Cincinnati, OH, 45229, USA
| | - Jared Sipple
- Cancer and Blood Diseases Institute, Molecular and Developmental Biology Graduate Program, Children's Hospital Research Foundation, 3333 Burnet Avenue, Cincinnati, OH, 45229, USA
| | - Mark Wunderlich
- Cancer and Blood Diseases Institute, Molecular and Developmental Biology Graduate Program, Children's Hospital Research Foundation, 3333 Burnet Avenue, Cincinnati, OH, 45229, USA
| | - Hartmut Geiger
- Cancer and Blood Diseases Institute, Molecular and Developmental Biology Graduate Program, Children's Hospital Research Foundation, 3333 Burnet Avenue, Cincinnati, OH, 45229, USA
| | - Stella Davies
- Cancer and Blood Diseases Institute, Molecular and Developmental Biology Graduate Program, Children's Hospital Research Foundation, 3333 Burnet Avenue, Cincinnati, OH, 45229, USA
| | - James Mulloy
- Cancer and Blood Diseases Institute, Molecular and Developmental Biology Graduate Program, Children's Hospital Research Foundation, 3333 Burnet Avenue, Cincinnati, OH, 45229, USA
| | - Qishen Pang
- Cancer and Blood Diseases Institute, Molecular and Developmental Biology Graduate Program, Children's Hospital Research Foundation, 3333 Burnet Avenue, Cincinnati, OH, 45229, USA.
| | - Yi Zheng
- Cancer and Blood Diseases Institute, Molecular and Developmental Biology Graduate Program, Children's Hospital Research Foundation, 3333 Burnet Avenue, Cincinnati, OH, 45229, USA.
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46
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Han Y, Eipel M, Franzen J, Sakk V, Dethmers-Ausema B, Yndriago L, Izeta A, de Haan G, Geiger H, Wagner W. Epigenetic age-predictor for mice based on three CpG sites. eLife 2018; 7:37462. [PMID: 30142075 PMCID: PMC6156076 DOI: 10.7554/elife.37462] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 08/23/2018] [Indexed: 11/25/2022] Open
Abstract
Epigenetic clocks for mice were generated based on deep-sequencing analysis of the methylome. Here, we demonstrate that site-specific analysis of DNA methylation levels by pyrosequencing at only three CG dinucleotides (CpGs) in the genes Prima1, Hsf4, and Kcns1 facilitates precise estimation of chronological age in murine blood samples, too. DBA/2 mice revealed accelerated epigenetic aging as compared to C57BL6 mice, which is in line with their shorter life-expectancy. The three-CpG-predictor provides a simple and cost-effective biomarker to determine biological age in large intervention studies with mice. Epigenetic marks are chemical modifications found throughout the genome – the DNA within cells. By influencing the activity of nearby genes, the marks govern developmental processes and help cells to adapt to changes in their surroundings. Some epigenetic marks can be gained or lost with age. A lot of aging research focuses on one type of mark, called “DNA methylation”. By measuring the presence or absence of specific methyl groups, scientists can estimate biological age – which may differ from calendar age. Recent studies have developed computer models called epigenetic aging clocks to predict the biological age of mouse cells. These clocks use epigenetic data collected from the entire genomes of mice, and are useful for understanding how the aging process is affected by genetic parameters, diet, or other environmental factors. Yet, the genome sequencing methods used to construct most existing epigenetic clocks are expensive, labor-intensive, and cannot be easily applied to large groups of mice. Han et al. have developed a new way to predict biological aging in mice that needs methylation information from just three particular sections of the genome. Even though this approach is much faster and less expensive than other epigenetic approaches to measuring aging, it has a similar level of accuracy to existing models. Han et al. use the new method to show that cells from different strains of laboratory mice age at different rates. Furthermore, in a strain that has a shorter life expectancy, aging seems to be accelerated. The new approach developed by Han et al. will make it easier to study how aging in mice is affected by different interventions. Further studies will also be needed to better understand how epigenetic marks relate to biological aging.
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Affiliation(s)
- Yang Han
- Helmholtz-Institute for Biomedical Engineering, Stem Cell Biology and Cellular Engineering, RWTH Aachen University Medical School, Aachen, Germany.,Institute for Biomedical Engineering - Cell Biology, University Hospital RWTH Aachen, Aachen, Germany
| | - Monika Eipel
- Helmholtz-Institute for Biomedical Engineering, Stem Cell Biology and Cellular Engineering, RWTH Aachen University Medical School, Aachen, Germany.,Institute for Biomedical Engineering - Cell Biology, University Hospital RWTH Aachen, Aachen, Germany
| | - Julia Franzen
- Helmholtz-Institute for Biomedical Engineering, Stem Cell Biology and Cellular Engineering, RWTH Aachen University Medical School, Aachen, Germany.,Institute for Biomedical Engineering - Cell Biology, University Hospital RWTH Aachen, Aachen, Germany
| | - Vadim Sakk
- Institute of Molecular Medicine, Ulm University, Ulm, Germany
| | - Bertien Dethmers-Ausema
- Laboratory of Ageing Biology and Stem Cells, European Research Institute for the Biology of Ageing, University Medical Center Groningen, Groningen, Netherlands
| | - Laura Yndriago
- Tissue Engineering Laboratory, Instituto Biodonostia, San Sebastian, Spain
| | - Ander Izeta
- Tissue Engineering Laboratory, Instituto Biodonostia, San Sebastian, Spain.,Department of Biomedical Engineering, School of Engineering, Tecnun-University of Navarra, San Sebastian, Spain
| | - Gerald de Haan
- Laboratory of Ageing Biology and Stem Cells, European Research Institute for the Biology of Ageing, University Medical Center Groningen, Groningen, Netherlands
| | - Hartmut Geiger
- Institute of Molecular Medicine, Ulm University, Ulm, Germany.,Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Burnet Campus, Cincinnati, United States
| | - Wolfgang Wagner
- Helmholtz-Institute for Biomedical Engineering, Stem Cell Biology and Cellular Engineering, RWTH Aachen University Medical School, Aachen, Germany.,Institute for Biomedical Engineering - Cell Biology, University Hospital RWTH Aachen, Aachen, Germany
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47
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Leins H, Mulaw M, Eiwen K, Sakk V, Liang Y, Denkinger M, Geiger H, Schirmbeck R. Aged murine hematopoietic stem cells drive aging-associated immune remodeling. Blood 2018; 132:565-576. [PMID: 29891535 PMCID: PMC6137572 DOI: 10.1182/blood-2018-02-831065] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [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: 02/01/2018] [Accepted: 05/30/2018] [Indexed: 02/07/2023] Open
Abstract
Aging-associated remodeling of the immune system impairs its functional integrity and contributes to increased morbidity and mortality in the elderly. Aging of hematopoietic stem cells (HSCs), from which all cells of the adaptive immune system ultimately originate, might play a crucial role in the remodeling of the aged immune system. We recently reported that aging of HSCs is, in part, driven by elevated activity of the small RhoGTPase Cdc42 and that aged HSCs can be rejuvenated in vitro by inhibition of the elevated Cdc42 activity in aged HSCs with the pharmacological compound CASIN. To study the quality of immune systems stemming selectively from young or aged HSCs, we established a HSC transplantation model in T- and B-cell-deficient young RAG1-/- hosts. We report that both phenotypic and functional changes in the immune system on aging are primarily a consequence of changes in the function of HSCs on aging and, to a large extent, independent of the thymus, as young and aged HSCs reconstituted distinct T- and B-cell subsets in RAG1-/- hosts that mirrored young and aged immune systems. Importantly, aged HSCs treated with CASIN reestablished an immune system similar to that of young animals, and thus capable of mounting a strong immune response to vaccination. Our studies further imply that epigenetic signatures already imprinted in aged HSCs determine the transcriptional profile and function of HSC-derived T and B cells.
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Affiliation(s)
- Hanna Leins
- Department of Internal Medicine I, University Hospital of Ulm, Ulm, Germany
- Institute of Molecular Medicine, Stem Cell and Aging, Ulm University, Ulm, Germany
| | - Medhanie Mulaw
- Institute of Experimental Cancer Research, University Hospital of Ulm, Ulm, Germany
| | - Karina Eiwen
- Institute of Molecular Medicine, Stem Cell and Aging, Ulm University, Ulm, Germany
| | - Vadim Sakk
- Institute of Molecular Medicine, Stem Cell and Aging, Ulm University, Ulm, Germany
| | - Ying Liang
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY
| | - Michael Denkinger
- AGAPLESION Bethesda Hospital, Geriatric Research Unit and
- Geriatric Center Ulm/Alb-Donau, Ulm University, Ulm, Germany; and
| | - Hartmut Geiger
- Institute of Molecular Medicine, Stem Cell and Aging, Ulm University, Ulm, Germany
- Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
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48
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Geiger H, Florian MC. Mechanisms of Aging of Hematopoietic Stem Cells. Exp Hematol 2018. [DOI: 10.1016/j.exphem.2018.06.017] [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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Sacma M, Pospiech J, Bogeska R, de Back W, Karns R, Sakk V, Soller K, Marka G, Vollmer A, Méndez-Ferrer S, Cabezas-Wallscheid N, Trumpp A, Milsom MD, Geiger H, Florian MC. Hematopoietic Stem Cells in Perisinusoidal Niches are Protected From Aging. Exp Hematol 2018. [DOI: 10.1016/j.exphem.2018.06.047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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50
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Geiger H, Klepper J, Lux P, Heidland A. Biochemical Assessment and Clinical Evaluation of a Bilirubin Adsorbent Column (Br-350) in Critically ILL Patients with Intractable Jaundice. Int J Artif Organs 2018. [DOI: 10.1177/039139889201500107] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We investigated the efficacy of an anion-exchange adsorbent column (ASAHI BR-350, DIAMED) for removal of bilirubin and bile acids in five patients with intractable jaundice of various origin. Four litres of plasma were separated by membrane plasma separation (Plasmaflow OP-05) at a rate of 22.5 ml/min. The plasma was then perfused through an anion exchange adsorbent and returned to the venous blood line of the plasma separator. In some of the patients this procedure was combined with regular hemodialysis treatment. The concentration of total bilirubin was cut by 31 to 60%; total bile acids were reduced by 20 to 74%. Three patients recovered and had a favourable outcome. Two patients died despite the bilirubin adsorption treatment. The effects of the adsorbent column on specific blood parameters, including the coagulation system, were measured. Our data suggest that bilirubin adsorption should be examined further as a treatment for critically ill patients with intractable jaundice.
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Affiliation(s)
- H. Geiger
- IV Medical Clinic, University of Erlangen-Nürnberg, Erlangen
| | - J. Klepper
- Department of Nephrology, University of Würzburg, Würzburg - Germany
| | - P. Lux
- Department of Nephrology, University of Würzburg, Würzburg - Germany
| | - A. Heidland
- Department of Nephrology, University of Würzburg, Würzburg - Germany
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