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Di Donato R, Bonecchi R, Albano F. Canonical and atypical chemokine receptors in the neutrophil life cycle. Cytokine 2023; 169:156297. [PMID: 37453326 DOI: 10.1016/j.cyto.2023.156297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/30/2023] [Accepted: 07/06/2023] [Indexed: 07/18/2023]
Abstract
Chemokines are mainly studied for their local function in the control of leukocyte extravasation in homeostatic and inflammatory conditions. However, they have additional roles at the systemic level including the regulation of the hematopoietic process and leukocyte differentiation. Due to the redundancy and pleiotropicity of the chemokine system, chemokines have often multiple and complex roles in neutrophil differentiation ranging from retention and control of proliferation of progenitors to the mobilization of mature cells from the bone marrow (BM) to the bloodstream and their further differentiation in tissues. Atypical chemokine receptors (ACKRs) are regulators of the chemokine system by controlling chemokine bioavailability and chemokine receptor function. Even though ACKRs bind a wide range of chemokines, they appear to have a selective role in the process of neutrophil production and differentiation. The aim of this review is to give an overview of the current evidence regarding the role of chemokines and chemokine receptors in the life of neutrophils with a focus on the regulation exerted by ACKRs.
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Affiliation(s)
- Rachele Di Donato
- IRCCS Humanitas Research Hospital, via Manzoni 56, 20089 Rozzano, Milan, Italy; Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20072 Pieve Emanuele, Milan, Italy
| | - Raffaella Bonecchi
- IRCCS Humanitas Research Hospital, via Manzoni 56, 20089 Rozzano, Milan, Italy; Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20072 Pieve Emanuele, Milan, Italy.
| | - Francesca Albano
- IRCCS Humanitas Research Hospital, via Manzoni 56, 20089 Rozzano, Milan, Italy; Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20072 Pieve Emanuele, Milan, Italy
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2
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Chen X, Xu J, Fang F, Xu Z, Tan Y, Chang J, Muyey DM, Wang H. The clinical characteristics and prognosis of Chinese acute myeloid leukemia patients with CSF3R mutations. Int J Lab Hematol 2021; 44:364-370. [PMID: 34818692 DOI: 10.1111/ijlh.13762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 10/16/2021] [Accepted: 10/25/2021] [Indexed: 10/19/2022]
Abstract
INTRODUCTION The colony-stimulating factor 3 receptor (CSF3R) controls the proliferation of myeloid progenitors and differentiation into neutrophils. However, the clinical features and prognostic significance of CSF3R mutations in primary acute myeloid leukemia (AML) patients are still unclear. METHODS 158 newly diagnosed AML patients were retrospectively evaluated in our study. Amplicon-based next-generation sequencing (NGS) and multiplex-nested reverse-transcription polymerase chain reaction (RT-PCR) were used to investigate the 34 genes and 43 fusion genes associated with leukemia. In addition, clinical features, mutation incidence, and survival outcomes were compared between patients with CSF3R mutation and patients with wild-type CSF3R. RESULTS In our study, CSF3R mutations were found in 7.6% (12/158) cases. The membrane-proximal amino acid substitution T618I (58.3%) was the most frequent mutation. CSF3R mutations were associated with higher WBC counts (P = .035). CEBPA mutation, TET2 mutation, and RUNX1-RUNX1T1 translocation were the most common co-mutations of CSF3R. The CSF3R gene was mutually exclusive with signal transduction genes (P = .029), while positively associated with TET2 mutations (P = .014). CSF3R mutations had no effect on CR1 (P = .935), R (P = .625) and OS (P = .1172). Patients with CSF3R mutations had a worse DFS (P = .0352) than those with wild-type CSF3R. Multivariate survival analysis showed that CSF3R mutation was an independent risk factor for DFS of primary AML patients (HR=2.048, 95%CI: 1.006-4.170, P = .048). CONCLUSION AML patients with CSF3R mutations had unique clinical features and gene co-mutation spectrum. CSF3R mutation was an independent risk factor for DFS and could be a potential prognostic marker and therapeutic target for Chinese primary AML patients.
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Affiliation(s)
- Xiuhua Chen
- Shanxi Medical University, Taiyuan, China.,Institute of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Jing Xu
- Shanxi Medical University, Taiyuan, China
| | - Fang Fang
- Shanxi Medical University, Taiyuan, China
| | - Zhifang Xu
- Institute of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Yanhong Tan
- Institute of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - JianMei Chang
- Shanxi Medical University, Taiyuan, China.,Institute of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | | | - Hongwei Wang
- Shanxi Medical University, Taiyuan, China.,Institute of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China
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3
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Braun TP, Okhovat M, Coblentz C, Carratt SA, Foley A, Schonrock Z, Curtiss BM, Nevonen K, Davis B, Garcia B, LaTocha D, Weeder BR, Grzadkowski MR, Estabrook JC, Manning HG, Watanabe-Smith K, Jeng S, Smith JL, Leonti AR, Ries RE, McWeeney S, Di Genua C, Drissen R, Nerlov C, Meshinchi S, Carbone L, Druker BJ, Maxson JE. Myeloid lineage enhancers drive oncogene synergy in CEBPA/CSF3R mutant acute myeloid leukemia. Nat Commun 2019; 10:5455. [PMID: 31784538 PMCID: PMC6884457 DOI: 10.1038/s41467-019-13364-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 11/04/2019] [Indexed: 12/26/2022] Open
Abstract
Acute Myeloid Leukemia (AML) develops due to the acquisition of mutations from multiple functional classes. Here, we demonstrate that activating mutations in the granulocyte colony stimulating factor receptor (CSF3R), cooperate with loss of function mutations in the transcription factor CEBPA to promote acute leukemia development. The interaction between these distinct classes of mutations occurs at the level of myeloid lineage enhancers where mutant CEBPA prevents activation of a subset of differentiation associated enhancers. To confirm this enhancer-dependent mechanism, we demonstrate that CEBPA mutations must occur as the initial event in AML initiation. This improved mechanistic understanding will facilitate therapeutic development targeting the intersection of oncogene cooperativity.
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Affiliation(s)
- Theodore P. Braun
- 0000 0000 9758 5690grid.5288.7Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239 USA ,0000 0000 9758 5690grid.5288.7Division of Hematology and Medical Oncology, Oregon Health & Science University, Portland, OR 97239 USA
| | - Mariam Okhovat
- 0000 0000 9758 5690grid.5288.7Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR 97239 USA
| | - Cody Coblentz
- 0000 0000 9758 5690grid.5288.7Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239 USA ,0000 0000 9758 5690grid.5288.7Division of Hematology and Medical Oncology, Oregon Health & Science University, Portland, OR 97239 USA
| | - Sarah A. Carratt
- 0000 0000 9758 5690grid.5288.7Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239 USA ,0000 0000 9758 5690grid.5288.7Division of Hematology and Medical Oncology, Oregon Health & Science University, Portland, OR 97239 USA
| | - Amy Foley
- 0000 0000 9758 5690grid.5288.7Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239 USA ,0000 0000 9758 5690grid.5288.7Division of Hematology and Medical Oncology, Oregon Health & Science University, Portland, OR 97239 USA
| | - Zachary Schonrock
- 0000 0000 9758 5690grid.5288.7Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239 USA ,0000 0000 9758 5690grid.5288.7Division of Hematology and Medical Oncology, Oregon Health & Science University, Portland, OR 97239 USA
| | - Brittany M. Curtiss
- 0000 0000 9758 5690grid.5288.7Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239 USA ,0000 0000 9758 5690grid.5288.7Division of Hematology and Medical Oncology, Oregon Health & Science University, Portland, OR 97239 USA
| | - Kimberly Nevonen
- 0000 0000 9758 5690grid.5288.7Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR 97239 USA
| | - Brett Davis
- 0000 0000 9758 5690grid.5288.7Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR 97239 USA
| | - Brianna Garcia
- 0000 0000 9758 5690grid.5288.7Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239 USA ,0000 0000 9758 5690grid.5288.7Division of Hematology and Medical Oncology, Oregon Health & Science University, Portland, OR 97239 USA
| | - Dorian LaTocha
- 0000 0000 9758 5690grid.5288.7Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239 USA ,0000 0000 9758 5690grid.5288.7Division of Hematology and Medical Oncology, Oregon Health & Science University, Portland, OR 97239 USA
| | - Benjamin R. Weeder
- 0000 0000 9758 5690grid.5288.7Program in Molecular and Cellular Biology, Oregon Health & Science University, Portland, OR 97239 USA
| | - Michal R. Grzadkowski
- 0000 0000 9758 5690grid.5288.7Computational Biology Program, Oregon Health & Science University, Portland, OR 97239 USA
| | - Joey C. Estabrook
- 0000 0000 9758 5690grid.5288.7Computational Biology Program, Oregon Health & Science University, Portland, OR 97239 USA
| | - Hannah G. Manning
- 0000 0000 9758 5690grid.5288.7Computational Biology Program, Oregon Health & Science University, Portland, OR 97239 USA
| | - Kevin Watanabe-Smith
- 0000 0000 9758 5690grid.5288.7Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239 USA ,0000 0000 9758 5690grid.5288.7Computational Biology Program, Oregon Health & Science University, Portland, OR 97239 USA
| | - Sophia Jeng
- 0000 0000 9758 5690grid.5288.7Division of Bioinformatics and Computational Biology, Oregon Health & Science University, Portland, OR 97239 USA
| | - Jenny L. Smith
- 0000 0001 2180 1622grid.270240.3Clinical Research Division, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave N, Seattle, WA 98109 USA
| | - Amanda R. Leonti
- 0000 0001 2180 1622grid.270240.3Clinical Research Division, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave N, Seattle, WA 98109 USA
| | - Rhonda E. Ries
- 0000 0001 2180 1622grid.270240.3Clinical Research Division, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave N, Seattle, WA 98109 USA
| | - Shannon McWeeney
- 0000 0000 9758 5690grid.5288.7Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239 USA ,0000 0000 9758 5690grid.5288.7Division of Bioinformatics and Computational Biology, Oregon Health & Science University, Portland, OR 97239 USA
| | - Cristina Di Genua
- 0000 0001 2306 7492grid.8348.7MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, Headley Way, Oxford, OX3 9DS UK
| | - Roy Drissen
- 0000 0001 2306 7492grid.8348.7MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, Headley Way, Oxford, OX3 9DS UK
| | - Claus Nerlov
- 0000 0001 2306 7492grid.8348.7MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, Headley Way, Oxford, OX3 9DS UK
| | - Soheil Meshinchi
- 0000 0001 2180 1622grid.270240.3Clinical Research Division, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave N, Seattle, WA 98109 USA ,0000000122986657grid.34477.33Division of Pediatric Hematology/Oncology, University of Washington, Seattle, WA 98195 USA
| | - Lucia Carbone
- 0000 0000 9758 5690grid.5288.7Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR 97239 USA ,0000 0000 9758 5690grid.5288.7Division of Bioinformatics and Computational Biology, Oregon Health & Science University, Portland, OR 97239 USA ,0000 0000 9758 5690grid.5288.7Department of Molecular and Medical Genetics, Oregon Health & Science University, Portland, OR 97239 USA
| | - Brian J. Druker
- 0000 0000 9758 5690grid.5288.7Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239 USA ,0000 0000 9758 5690grid.5288.7Division of Hematology and Medical Oncology, Oregon Health & Science University, Portland, OR 97239 USA ,0000 0001 2167 1581grid.413575.1Howard Hughes Medical Institute, Portland, OR USA
| | - Julia E. Maxson
- 0000 0000 9758 5690grid.5288.7Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239 USA ,0000 0000 9758 5690grid.5288.7Division of Hematology and Medical Oncology, Oregon Health & Science University, Portland, OR 97239 USA
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Cebpd Is Essential for Gamma-Tocotrienol Mediated Protection against Radiation-Induced Hematopoietic and Intestinal Injury. Antioxidants (Basel) 2018; 7:antiox7040055. [PMID: 29642403 PMCID: PMC5946121 DOI: 10.3390/antiox7040055] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 04/02/2018] [Accepted: 04/03/2018] [Indexed: 02/06/2023] Open
Abstract
Gamma-tocotrienol (GT3) confers protection against ionizing radiation (IR)-induced injury. However, the molecular targets that underlie the protective functions of GT3 are not yet known. We have reported that mice lacking CCAAT enhancer binding protein delta (Cebpd−/−) display increased mortality to IR due to injury to the hematopoietic and intestinal tissues and that Cebpd protects from IR-induced oxidative stress and cell death. The purpose of this study was to investigate whether Cebpd mediates the radio protective functions of GT3. We found that GT3-treated Cebpd−/− mice showed partial recovery of white blood cells compared to GT3-treated Cebpd+/+ mice at 2 weeks post-IR. GT3-treated Cebpd−/− mice showed an increased loss of intestinal crypt colonies, which correlated with increased expression of inflammatory cytokines and chemokines, increased levels of oxidized glutathione (GSSG), S-nitrosoglutathione (GSNO) and 3-nitrotyrosine (3-NT) after exposure to IR compared to GT3-treated Cebpd+/+ mice. Cebpd is induced by IR as well as a combination of IR and GT3 in the intestine. Studies have shown that granulocyte-colony stimulating factor (G-CSF), mediates the radioprotective functions of GT3. Interestingly, we found that IR alone as well as the combination of IR and GT3 caused robust augmentation of plasma G-CSF in both Cebpd+/+ and Cebpd−/− mice. These results identify a novel role for Cebpd in GT3-mediated protection against IR-induced injury, in part via modulation of IR-induced inflammation and oxidative/nitrosative stress, which is independent of G-CSF.
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5
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Riffelmacher T, Clarke A, Richter FC, Stranks A, Pandey S, Danielli S, Hublitz P, Yu Z, Johnson E, Schwerd T, McCullagh J, Uhlig H, Jacobsen SEW, Simon AK. Autophagy-Dependent Generation of Free Fatty Acids Is Critical for Normal Neutrophil Differentiation. Immunity 2017; 47:466-480.e5. [PMID: 28916263 PMCID: PMC5610174 DOI: 10.1016/j.immuni.2017.08.005] [Citation(s) in RCA: 187] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 05/15/2017] [Accepted: 08/14/2017] [Indexed: 12/19/2022]
Abstract
Neutrophils are critical and short-lived mediators of innate immunity that require constant replenishment. Their differentiation in the bone marrow requires extensive cytoplasmic and nuclear remodeling, but the processes governing these energy-consuming changes are unknown. While previous studies show that autophagy is required for differentiation of other blood cell lineages, its function during granulopoiesis has remained elusive. Here, we have shown that metabolism and autophagy are developmentally programmed and essential for neutrophil differentiation in vivo. Atg7-deficient neutrophil precursors had increased glycolytic activity but impaired mitochondrial respiration, decreased ATP production, and accumulated lipid droplets. Inhibiting autophagy-mediated lipid degradation or fatty acid oxidation alone was sufficient to cause defective differentiation, while administration of fatty acids or pyruvate for mitochondrial respiration rescued differentiation in autophagy-deficient neutrophil precursors. Together, we show that autophagy-mediated lipolysis provides free fatty acids to support a mitochondrial respiration pathway essential to neutrophil differentiation. Autophagy is critical for neutrophil differentiation in vivo Differentiating neutrophils shift from glycolysis to fatty acid oxidation By degrading lipid droplets, autophagy provides fatty acids, enabling this shift Fatty acids restore energy metabolism and differentiation in Atg7–/– granulopoiesis
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Affiliation(s)
- Thomas Riffelmacher
- Kennedy Institute of Rheumatology, University of Oxford, Roosevelt Drive, Oxford OX3 7FY, UK; MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK
| | - Alexander Clarke
- Kennedy Institute of Rheumatology, University of Oxford, Roosevelt Drive, Oxford OX3 7FY, UK
| | - Felix C Richter
- Kennedy Institute of Rheumatology, University of Oxford, Roosevelt Drive, Oxford OX3 7FY, UK
| | - Amanda Stranks
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK
| | - Sumeet Pandey
- Translational Gastroenterology Unit, Experimental Medicine, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DU, UK
| | - Sara Danielli
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK
| | - Philip Hublitz
- MRC Molecular Hematology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK
| | - Zhanru Yu
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford OX3 7FZ, UK
| | - Errin Johnson
- The Dunn School of Pathology, South Parks Road, Oxford OX1 3RE, UK
| | - Tobias Schwerd
- Translational Gastroenterology Unit, Experimental Medicine, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DU, UK
| | - James McCullagh
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, UK
| | - Holm Uhlig
- Translational Gastroenterology Unit, Experimental Medicine, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DU, UK
| | - Sten Eirik W Jacobsen
- MRC Molecular Hematology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK; Department of Medicine Huddinge, Center for Hematology and Regenerative Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Cell and Molecular Biology, Wallenberg Institute for Regenerative Medicine, Karolinska Institutet, Stockholm, Sweden; Karolinska University Hospital, Stockholm, Sweden
| | - Anna Katharina Simon
- Kennedy Institute of Rheumatology, University of Oxford, Roosevelt Drive, Oxford OX3 7FY, UK; MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK.
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6
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Structure of Nascent Chromatin Is Essential for Hematopoietic Lineage Specification. Cell Rep 2017; 19:295-306. [PMID: 28402853 DOI: 10.1016/j.celrep.2017.03.035] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 12/28/2016] [Accepted: 03/09/2017] [Indexed: 12/12/2022] Open
Abstract
The role of chromatin structure in lineage commitment of multipotent hematopoietic progenitors (HPCs) is presently unclear. We show here that CD34+ HPCs possess a post-replicative chromatin globally devoid of the repressive histone mark H3K27me3. This H3K27-unmodified chromatin is required for recruitment of lineage-determining transcription factors (TFs) C/EBPα, PU.1, and GATA-1 to DNA just after DNA replication upon cytokine-induced myeloid or erythroid commitment. Blocking DNA replication or increasing H3K27me3 levels prevents recruitment of these TFs to DNA and suppresses cytokine-induced erythroid or myeloid differentiation. However, H3K27me3 is rapidly associated with nascent DNA in more primitive human and murine HPCs. Treatment of these cells with instructive cytokines leads to a significant delay in accumulation of H3K27me3 in nascent chromatin due to activity of the H3K27me3 demethylase UTX. Thus, HPCs utilize special mechanisms of chromatin modification for recruitment of specific TFs to DNA during early stages of lineage specification.
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7
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Sugino N, Kawahara M, Tatsumi G, Kanai A, Matsui H, Yamamoto R, Nagai Y, Fujii S, Shimazu Y, Hishizawa M, Inaba T, Andoh A, Suzuki T, Takaori-Kondo A. A novel LSD1 inhibitor NCD38 ameliorates MDS-related leukemia with complex karyotype by attenuating leukemia programs via activating super-enhancers. Leukemia 2017; 31:2303-2314. [PMID: 28210006 DOI: 10.1038/leu.2017.59] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Revised: 01/22/2017] [Accepted: 02/03/2017] [Indexed: 12/15/2022]
Abstract
Lysine-specific demethylase 1 (LSD1) regulates gene expression by affecting histone modifications and is a promising target for acute myeloid leukemia (AML) with specific genetic abnormalities. Novel LSD1 inhibitors, NCD25 and NCD38, inhibited growth of MLL-AF9 leukemia as well as erythroleukemia, megakaryoblastic leukemia and myelodysplastic syndromes (MDSs) overt leukemia cells in the concentration range that normal hematopoiesis was spared. NCD25 and NCD38 invoked the myeloid development programs, hindered the MDS and AML oncogenic programs, and commonly upregulated 62 genes in several leukemia cells. NCD38 elevated H3K27ac level on enhancers of these LSD1 signature genes and newly activated ~500 super-enhancers. Upregulated genes with super-enhancer activation in erythroleukemia cells were enriched in leukocyte differentiation. Eleven genes including GFI1 and ERG, but not CEBPA, were identified as the LSD1 signature with super-enhancer activation. Super-enhancers of these genes were activated prior to induction of the transcripts and myeloid differentiation. Depletion of GFI1 attenuated myeloid differentiation by NCD38. Finally, a single administration of NCD38 causes the in vivo eradication of primary MDS-related leukemia cells with a complex karyotype. Together, NCD38 derepresses super-enhancers of hematopoietic regulators that are silenced abnormally by LSD1, attenuates leukemogenic programs and consequently exerts anti-leukemic effect against MDS-related leukemia with adverse outcome.
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Affiliation(s)
- N Sugino
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - M Kawahara
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Department of Medicine, Shiga University of Medical Science, Otsu, Japan
| | - G Tatsumi
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - A Kanai
- Department of Molecular Oncology and Leukemia Program Project, Hiroshima University, Hiroshima, Japan
| | - H Matsui
- Department of Molecular Oncology and Leukemia Program Project, Hiroshima University, Hiroshima, Japan.,Department of Molecular Laboratory Medicine, Kumamoto University, Kumamoto, Japan
| | - R Yamamoto
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Y Nagai
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - S Fujii
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Y Shimazu
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - M Hishizawa
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - T Inaba
- Department of Molecular Oncology and Leukemia Program Project, Hiroshima University, Hiroshima, Japan
| | - A Andoh
- Department of Medicine, Shiga University of Medical Science, Otsu, Japan
| | - T Suzuki
- Department of Chemistry, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan.,CREST, Japan Science and Technology Agency (JST), Tokyo, Japan
| | - A Takaori-Kondo
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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8
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Carson WF, Kunkel SL. Regulation of Cellular Immune Responses in Sepsis by Histone Modifications. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2016; 106:191-225. [PMID: 28057212 DOI: 10.1016/bs.apcsb.2016.08.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Severe sepsis, septic shock, and related inflammatory syndromes are driven by the aberrant expression of proinflammatory mediators by immune cells. During the acute phase of sepsis, overexpression of chemokines and cytokines drives physiological stress leading to organ failure and mortality. Following recovery from sepsis, the immune system exhibits profound immunosuppression, evidenced by an inability to produce the same proinflammatory mediators that are required for normal responses to infectious microorganisms. Gene expression in inflammatory responses is influenced by the transcriptional accessibility of the chromatin, with histone posttranslational modifications determining whether inflammatory gene loci are set to transcriptionally active, repressed, or poised states. Experimental evidence indicates that histone modifications play a central role in governing the cytokine storm of severe sepsis, and that aberrant chromatin modifications induced during the acute phase of sepsis may mediate chronic immunosuppression in sepsis survivors. This review will focus on the role of histone modifications in governing immune responses in severe sepsis, with an emphasis on specific leukocyte subsets and the histone modifications observed in these cells during chronic stages of sepsis. Additionally, the expression and function of chromatin-modifying enzymes (CMEs) will be discussed in the context of severe sepsis, as potential mediators of epigenetic regulation of gene expression in sepsis responses. In summary, this review will argue for the use of chromatin modifications and CME expression in leukocytes as potential biomarkers of immunosuppression in patients with severe sepsis.
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Affiliation(s)
- W F Carson
- University of Michigan Medical School, Ann Arbor, MI, United States.
| | - S L Kunkel
- University of Michigan Medical School, Ann Arbor, MI, United States
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9
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Wang T, Wang Z, Yang P, Xia L, Zhou M, Wang S, Du J, Zhang J. PER1 prevents excessive innate immune response during endotoxin-induced liver injury through regulation of macrophage recruitment in mice. Cell Death Dis 2016; 7:e2176. [PMID: 27054331 PMCID: PMC4855679 DOI: 10.1038/cddis.2016.9] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Revised: 01/06/2016] [Accepted: 01/07/2016] [Indexed: 01/20/2023]
Abstract
The severity of acute liver failure (ALF) induced by bacterial lipopolysaccharide (LPS) is associated with the hepatic innate immune response. The core circadian molecular clock modulates the innate immune response by controlling rhythmic pathogen recognition by the innate immune system and daily variations in cytokine gene expression. However, the molecular link between circadian genes and the innate immune system has remained unclear. Here, we showed that mice lacking the clock gene Per1 (Period1) are more susceptible to LPS/d-galactosamine (LPS/GalN)-induced macrophage-dependent ALF compared with wild-type (WT) mice. Per1 deletion caused a remarkable increase in the number of Kupffer cells (KCs) in the liver, resulting in an elevation of the levels of pro-inflammatory cytokines after LPS treatment. Loss of Per1 had no effect on the proliferation or apoptosis of macrophages; however, it enhanced the recruitment of macrophages, which was associated with an increase in CC chemokine receptor 2 (Ccr2) expression levels in monocytes/macrophages. Deletion of Ccr2 rescued d-GalN/LPS-induced liver injury in Per1−/− mice. We demonstrated that the upregulation of Ccr2 expression by Per1 deletion could be reversed by the synthetic peroxisome proliferator-activated receptor gamma (PPAR-γ) antagonist GW9662. Further analysis indicated that PER1 binds to PPAR-γ on the Ccr2 promoter and enhanced the inhibitory effect of PPAR-γ on Ccr2 expression. These results reveal that Per1 reduces hepatic macrophage recruitment through interaction with PPAR-γ and prevents an excessive innate immune response in endotoxin-induced liver injury.
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Affiliation(s)
- T Wang
- Center for Molecular Metabolism, Nanjing University of Science and Technology, Nanjing, China.,Cambridge Suda Genome Resource Center, Soochow University, Suzhou, China
| | - Z Wang
- Department of Radiology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - P Yang
- Center for Molecular Metabolism, Nanjing University of Science and Technology, Nanjing, China
| | - L Xia
- Center for Molecular Metabolism, Nanjing University of Science and Technology, Nanjing, China
| | - M Zhou
- Center for Molecular Metabolism, Nanjing University of Science and Technology, Nanjing, China
| | - S Wang
- Center for Molecular Metabolism, Nanjing University of Science and Technology, Nanjing, China
| | - Jie Du
- Beijing An Zhen Hospital, Capital Medical University, Beijing, China
| | - J Zhang
- Center for Molecular Metabolism, Nanjing University of Science and Technology, Nanjing, China
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10
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Wicks K, Torbica T, Umehara T, Amin S, Bobola N, Mace KA. Diabetes Inhibits Gr-1+ Myeloid Cell Maturation via Cebpa Deregulation. Diabetes 2015; 64:4184-97. [PMID: 26324181 DOI: 10.2337/db14-1895] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Accepted: 08/26/2015] [Indexed: 11/13/2022]
Abstract
Recruitment of innate immune cells from the bone marrow (BM) to an injury site is required for effective repair. In diabetes, this process is altered, leading to excessive recruitment and retention of dysfunctional myeloid cells that fail to promote angiogenesis, prolong inflammation, and block healing. The aberrant myeloid phenotype is partially mediated by stable intrinsic changes to developing cells in the BM that are induced by the diabetic (db) environment, but the exact mechanisms remain largely unknown. Here, we show that the db-derived Gr-1(+)CD11b(+) immature myeloid population has widespread misexpression of chromatin-remodeling enzymes and myeloid differentiation factors. Crucially, diabetes represses transcription of the key myeloid transcription factor CEBPA via diminished H3 Lys 27 promoter acetylation, leading to a failure in monocyte and granulocyte maturation. Restoring Cebpa expression by granulocyte colony-stimulating factor reverses the db phenotype and rescues myeloid maturation. Importantly, our data demonstrate a possible link between myeloid cell maturation and chronic inflammation.
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MESH Headings
- Adult
- Animals
- Biomarkers/blood
- Biomarkers/metabolism
- CCAAT-Enhancer-Binding Proteins/agonists
- CCAAT-Enhancer-Binding Proteins/blood
- CCAAT-Enhancer-Binding Proteins/genetics
- CCAAT-Enhancer-Binding Proteins/metabolism
- Cells, Cultured
- Crosses, Genetic
- Diabetes Mellitus, Type 1/blood
- Diabetes Mellitus, Type 1/immunology
- Diabetes Mellitus, Type 1/metabolism
- Diabetes Mellitus, Type 1/pathology
- Diabetes Mellitus, Type 2/blood
- Diabetes Mellitus, Type 2/immunology
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/pathology
- Down-Regulation
- Female
- Granulocytes/immunology
- Granulocytes/metabolism
- Hematopoiesis
- Humans
- Immunity, Innate
- Male
- Mice, Inbred C57BL
- Mice, Mutant Strains
- Mice, Transgenic
- Myeloid Cells/immunology
- Myeloid Cells/metabolism
- Myeloid Cells/pathology
- Receptors, Chemokine/blood
- Receptors, Chemokine/metabolism
- Recombinant Proteins/metabolism
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Affiliation(s)
- Kate Wicks
- The Healing Foundation Centre, Faculty of Life Sciences, University of Manchester, Manchester, U.K
| | - Tanja Torbica
- The Healing Foundation Centre, Faculty of Life Sciences, University of Manchester, Manchester, U.K
| | - Takahiro Umehara
- The Healing Foundation Centre, Faculty of Life Sciences, University of Manchester, Manchester, U.K
| | - Shilu Amin
- Faculty of Medical and Human Sciences, University of Manchester, Manchester, U.K
| | - Nicoletta Bobola
- Faculty of Medical and Human Sciences, University of Manchester, Manchester, U.K
| | - Kimberly A Mace
- The Healing Foundation Centre, Faculty of Life Sciences, University of Manchester, Manchester, U.K.
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11
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Dahiya S, Liu Y, Nonnemacher MR, Dampier W, Wigdahl B. CCAAT enhancer binding protein and nuclear factor of activated T cells regulate HIV-1 LTR via a novel conserved downstream site in cells of the monocyte-macrophage lineage. PLoS One 2014; 9:e88116. [PMID: 24551078 PMCID: PMC3925103 DOI: 10.1371/journal.pone.0088116] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Accepted: 01/03/2014] [Indexed: 12/11/2022] Open
Abstract
Transcriptional control of the human immunodeficiency virus type 1 (HIV-1) promoter, the long terminal repeat (LTR), is achieved by interactions with cis-acting elements present both upstream and downstream of the start site. In silico transcription factor binding analysis of the HIV-1 subtype B LTR sequences revealed a potential downstream CCAAT enhancer binding protein (C/EBP) binding site. This binding site (+158 to+172), designated DS3, was found to be conserved in 67% of 3,858 unique subtype B LTR sequences analyzed in terms of nucleotide sequence as well as physical location in the LTR. DS3 was found to be well represented in other subtypes as well. Interestingly, DS3 overlaps with a previously identified region that bind members of the nuclear factor of activated T cells (NFAT) family of proteins. NFATc2 exhibited a higher relative affinity for DS3 as compared with members of the C/EBP family (C/EBP α and β). DS3 was able to compete efficiently with the low-affinity upstream C/EBP binding site I with respect to C/EBP binding, suggesting utilization of both NFAT and C/EBP. Moreover, cyclosporine A treatment, which has been shown to prevent dephosphorylation and nuclear translocation of NFAT isoforms, resulted in enhanced C/EBPα binding. The interactions at DS3 were also validated in an integrated HIV-1 LTR in chronically infected U1 cells. A binding knockout of DS3 demonstrated reduced HIV-1 LTR-directed transcription under both basal and interleukin-6-stimulated conditions only in cells of the monocyte-macrophage lineage cells and not in cells of T-cell origin. Thus, the events at DS3 positively regulate the HIV-1 promoter in cells of the monocyte-macrophage lineage.
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Affiliation(s)
- Satinder Dahiya
- Department of Microbiology and Immunology, and Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Yujie Liu
- Department of Microbiology and Immunology, and Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Michael R. Nonnemacher
- Department of Microbiology and Immunology, and Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Will Dampier
- Department of Microbiology and Immunology, and Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Brian Wigdahl
- Department of Microbiology and Immunology, and Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
- * E-mail:
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12
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Epigenetic regulation of spinal CXCR2 signaling in incisional hypersensitivity in mice. Anesthesiology 2013; 119:1198-208. [PMID: 23756451 DOI: 10.1097/aln.0b013e31829ce340] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND The regulation of gene expression in nociceptive pathways contributes to the induction and maintenance of pain sensitization. Histone acetylation is a key epigenetic mechanism controlling chromatin structure and gene expression. Chemokine CC motif receptor 2 (CXCR2) is a proinflammatory receptor implicated in neuropathic and inflammatory pain and is known to be regulated by histone acetylation in some settings. The authors sought to investigate the role of histone acetylation on spinal CXCR2 signaling after incision. METHODS Groups of 5-8 mice underwent hind paw incision. Suberoylanilide hydroxamic acid and anacardic acid were used to inhibit histone deacetylase and histone acetyltransferase, respectively. Behavioral measures of thermal and mechanical sensitization as well as hyperalgesic priming were used. Both message RNA quantification and chromatin immunoprecipitation analysis were used to study the regulation of CXCR2 and ligand expression. Finally, the selective CXCR2 antagonist SB225002 was administered intrathecally to reveal the function of spinal CXCR2 receptors after hind paw incision. RESULTS Suberoylanilide hydroxamic acid significantly exacerbated mechanical sensitization after incision. Conversely, anacardic acid reduced incisional sensitization and also attenuated incision-induced hyperalgesic priming. Overall, acetylated histone H3 at lysine 9 was increased in spinal cord tissues after incision, and enhanced association of acetylated histone H3 at lysine 9 with the promoter regions of CXCR2 and keratinocyte-derived chemokine (CXCL1) was observed as well. Blocking CXCR2 reversed mechanical hypersensitivity after hind paw incision. CONCLUSIONS Histone modification is an important epigenetic mechanism regulating incision-induced nociceptive sensitization. The spinal CXCR2 signaling pathway is one epigenetically regulated pathway controlling early and latent sensitization after incision.
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13
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Giambruno R, Grebien F, Stukalov A, Knoll C, Planyavsky M, Rudashevskaya EL, Colinge J, Superti-Furga G, Bennett KL. Affinity purification strategies for proteomic analysis of transcription factor complexes. J Proteome Res 2013; 12:4018-27. [PMID: 23937658 PMCID: PMC3768224 DOI: 10.1021/pr4003323] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
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Affinity purification (AP) coupled
to mass spectrometry (MS) has
been successful in elucidating protein molecular networks of mammalian
cells. These approaches have dramatically increased the knowledge
of the interconnectivity present among proteins and highlighted biological
functions within different protein complexes. Despite significant
technical improvements reached in the past years, it is still challenging
to identify the interaction networks and the subsequent associated
functions of nuclear proteins such as transcription factors (TFs).
A straightforward and robust methodology is therefore required to
obtain unbiased and reproducible interaction data. Here we present
a new approach for TF AP-MS, exemplified with the CCAAT/enhancer binding
protein alpha (C/EBPalpha). Utilizing the advantages of a double tag
and three different MS strategies, we conducted a total of six independent
AP-MS strategies to analyze the protein–protein interactions
of C/EBPalpha. The resultant data were combined to produce a cohesive
C/EBPalpha interactome. Our study describes a new methodology that
robustly identifies specific molecular complexes associated with transcription
factors. Moreover, it emphasizes the existence of TFs as protein complexes
essential for cellular biological functions and not as single, static
entities.
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Affiliation(s)
- Roberto Giambruno
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Lazarettgasse 14, AKH BT 25.3, 1090 Vienna, Austria
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14
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Koleva RI, Ficarro SB, Radomska HS, Carrasco-Alfonso MJ, Alberta JA, Webber JT, Luckey CJ, Marcucci G, Tenen DG, Marto JA. C/EBPα and DEK coordinately regulate myeloid differentiation. Blood 2012; 119:4878-88. [PMID: 22474248 PMCID: PMC3367892 DOI: 10.1182/blood-2011-10-383083] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Accepted: 03/10/2012] [Indexed: 11/20/2022] Open
Abstract
The transcription factor C/EBPα is a critical mediator of myeloid differentiation and is often functionally impaired in acute myeloid leukemia. Recent studies have suggested that oncogenic FLT3 activity disrupts wild-type C/EBPα function via phosphorylation on serine 21 (S21). Despite the apparent role of pS21 as a negative regulator of C/EBPα transcription activity, the mechanism by which phosphorylation tips the balance between transcriptionally competent and inhibited forms remains unresolved. In the present study, we used immuno-affinity purification combined with quantitative mass spectrometry to delineate the proteins associated with C/EBPα on chromatin. We identified DEK, a protein with genetic links to leukemia, as a member of the C/EBPα complexes, and demonstrate that this association is disrupted by S21 phosphorylation. We confirmed that DEK is recruited specifically to chromatin with C/EBPα to enhance GCSFR3 promoter activation. In addition, we demonstrated that genetic depletion of DEK reduces the ability of C/EBPα to drive the expression of granulocytic target genes in vitro and disrupts G-CSF-mediated granulocytic differentiation of fresh human BM-derived CD34(+) cells. Our data suggest that C/EBPα and DEK coordinately activate myeloid gene expression and that S21 phosphorylation on wild-type C/EBPα mediates protein interactions that regulate the differentiation capacity of hematopoietic progenitors.
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Affiliation(s)
- Rositsa I Koleva
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02215-5450, USA
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15
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Sarrazin S, Sieweke M. Integration of cytokine and transcription factor signals in hematopoietic stem cell commitment. Semin Immunol 2011; 23:326-34. [DOI: 10.1016/j.smim.2011.08.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Accepted: 08/19/2011] [Indexed: 02/03/2023]
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16
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Hamidi H, Gustafason D, Pellegrini M, Gasson J. Identification of novel targets of CSL-dependent Notch signaling in hematopoiesis. PLoS One 2011; 6:e20022. [PMID: 21637838 PMCID: PMC3102675 DOI: 10.1371/journal.pone.0020022] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Accepted: 04/08/2011] [Indexed: 12/13/2022] Open
Abstract
Somatic activating mutations in the Notch1 receptor result in the overexpression of activated Notch1, which can be tumorigenic. The goal of this study is to understand the molecular mechanisms underlying the phenotypic changes caused by the overexpression of ligand independent Notch 1 by using a tetracycline inducible promoter in an in vitro embryonic stem (ES) cells/OP9 stromal cells coculture system, recapitulating normal hematopoiesis. First, an in silico analysis of the promoters of Notch regulated genes (previously determined by microarray analysis) revealed that the motifs recognized by regulatory proteins known to mediate hematopoiesis were overrepresented. Notch 1 does not bind DNA but instead binds the CSL transcription factor to regulate gene expression. The in silico analysis also showed that there were putative CSL binding sites observed in the promoters of 28 out of 148 genes. A custom ChIP-chip array was used to assess the occupancy of CSL in the promoter regions of the Notch1 regulated genes in vivo and showed that 61 genes were bound by activated Notch responsive CSL. Then, comprehensive mapping of the CSL binding sites genome-wide using ChIP-seq analysis revealed that over 10,000 genes were bound within 10 kb of the TSS (transcription start site). The majority of the targets discovered by ChIP-seq belong to pathways that have been shown by others to crosstalk with Notch signaling. Finally, 83 miRNAs were significantly differentially expressed by greater than 1.5-fold during the course of in vitro hematopoiesis. Thirty one miRNA were up-regulated and fifty two were down-regulated. Overexpression of Notch1 altered this pattern of expression of microRNA: six miRNAs were up-regulated and four were down regulated as a result of activated Notch1 overexpression during the course of hematopoiesis. Time course analysis of hematopoietic development revealed that cells with Notch 1 overexpression mimic miRNA expression of cells in a less mature stage, which is consistent with our previous biological characterization.
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Affiliation(s)
- Habib Hamidi
- Department of Biological Chemistry, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Derek Gustafason
- UCLA-DOE Institute for Genomics and Proteomics, University of California Los Angeles, Los Angeles, California, United States of America
| | - Matteo Pellegrini
- UCLA-DOE Institute for Genomics and Proteomics, University of California Los Angeles, Los Angeles, California, United States of America
- Department of Molecular, Cell, and Developmental Biology, University of California Los Angeles, Los Angeles, California, United States of America
| | - Judith Gasson
- Department of Biological Chemistry, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
- Division of Hematology-Oncology, Department of Medicine, and Department of Biological Chemistry and Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
- * E-mail:
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17
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Chen CW, Sowden M, Zhao Q, Wiedmer T, Sims PJ. Nuclear phospholipid scramblase 1 prolongs the mitotic expansion of granulocyte precursors during G-CSF-induced granulopoiesis. J Leukoc Biol 2011; 90:221-33. [PMID: 21447647 DOI: 10.1189/jlb.0111006] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
PLSCR1-/- mice exhibit normal, steady-state hematologic parameters but impaired emergency granulopoiesis upon in vivo administration of G-CSF. The mechanism by which PLSCR1 contributes to G-CSF-induced neutrophil production is largely unknown. We now report that the expansion of bone marrow myelocytes upon in vivo G-CSF treatment is reduced in PLSCR1-/- mice relative to WT. Using SCF-ER-Hoxb8-immortalized myeloid progenitors to examine the progression of G-CSF-driven granulocytic differentiation in vitro, we found that PLSCR1 prolongs the period of mitotic expansion of proliferative granulocyte precursors, thereby giving rise to increased neutrophil production from their progenitors. This effect of PLSCR1 is blocked by a ΔNLS-PLSCR1, which prevents its nuclear import. By contrast, mutation that prevents the membrane association of PLSCR1 has minimal impact on the role of PLSCR1 in G-CSF-induced granulopoiesis. These data imply that the capacity of PLSCR1 to augment G-CSF-dependent production of mature neutrophils from myeloid progenitors is unrelated to its reported activities at the endofacial surface of the plasma membrane but does require entry of the protein into the nucleus, suggesting that this response is mediated through the observed effects of PLSCR1 on gene transcription.
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Affiliation(s)
- Chun-Wei Chen
- Department of Pathology and Laboratory Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA
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18
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Lidonnici MR, Audia A, Soliera AR, Prisco M, Ferrari-Amorotti G, Waldron T, Donato N, Zhang Y, Martinez RV, Holyoake TL, Calabretta B. Expression of the transcriptional repressor Gfi-1 is regulated by C/EBP{alpha} and is involved in its proliferation and colony formation-inhibitory effects in p210BCR/ABL-expressing cells. Cancer Res 2010; 70:7949-59. [PMID: 20924107 DOI: 10.1158/0008-5472.can-10-1667] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ectopic expression of CAAT/enhancer binding protein α (C/EBPα) in p210BCR/ABL-expressing cells induces granulocytic differentiation, inhibits proliferation, and suppresses leukemogenesis. To dissect the molecular mechanisms underlying these biological effects, C/EBPα-regulated genes were identified by microarray analysis in 32D-p210BCR/ABL cells. One of the genes whose expression was activated by C/EBPα in a DNA binding-dependent manner in BCR/ABL-expressing cells is the transcriptional repressor Gfi-1. We show here that C/EBPα interacts with a functional C/EBP binding site in the Gfi-1 5'-flanking region and enhances the promoter activity of Gfi-1. Moreover, in K562 cells, RNA interference-mediated downregulation of Gfi-1 expression partially rescued the proliferation-inhibitory but not the differentiation-inducing effect of C/EBPα. Ectopic expression of wild-type Gfi-1, but not of a transcriptional repressor mutant (Gfi-1P2A), inhibited proliferation and markedly suppressed colony formation but did not induce granulocytic differentiation of BCR/ABL-expressing cells. By contrast, Gfi-1 short hairpin RNA-tranduced CD34(+) chronic myeloid leukemia cells were markedly more clonogenic than the scramble-transduced counterpart. Together, these studies indicate that Gfi-1 is a direct target of C/EBPα required for its proliferation and survival-inhibitory effects in BCR/ABL-expressing cells.
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Affiliation(s)
- Maria Rosa Lidonnici
- Department of Cancer Biology and Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
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19
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Ikegami D, Narita M, Imai S, Miyashita K, Tamura R, Narita M, Takagi S, Yokomizo A, Takeshima H, Ando T, Igarashi K, Kanno J, Kuzumaki N, Ushijima T, Suzuki T. Epigenetic modulation at the CCR2 gene correlates with the maintenance of behavioral sensitization to methamphetamine. Addict Biol 2010; 15:358-61. [PMID: 20624155 DOI: 10.1111/j.1369-1600.2010.00219.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The intermittent administration of methamphetamine produces behavioral sensitization to methamphetamine. In the limbic forebrain, mainly including the nucleus accumbens, of mice that had been intermittently treated with methamphetamine, we found a significant increase in mRNA of a chemokine, CCR2. This increase was accompanied by a significant increase in histone H3 lysine 4 (H3K4) trimethylation at its promoter. Interestingly, the maintenance of sensitization to methamphetamine-induced hyperlocomotion was significantly decreased in CCR2 knockout mice. These findings suggest that increased CCR2 associated with epigenetic modification after the intermittent administration of methamphetamine may be associated with the maintenance of sensitization to methamphetamine-induced hyperlocomotion.
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Affiliation(s)
- Daigo Ikegami
- Department of Toxicology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan
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20
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Induction of an IL7-R(+)c-Kit(hi) myelolymphoid progenitor critically dependent on IFN-gamma signaling during acute malaria. Nat Immunol 2010; 11:477-85. [PMID: 20431620 DOI: 10.1038/ni.1869] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2010] [Accepted: 03/23/2010] [Indexed: 12/24/2022]
Abstract
Although the relationship between hematopoietic stem cells and progenitor populations has been investigated extensively under steady-state conditions, the dynamic response of the hematopoietic compartment during acute infection is largely unknown. Here we show that after infection of mice with Plasmodium chabaudi, a c-Kit(hi) progenitor subset positive for interleukin 7 receptor-alpha (IL-7Ralpha) emerged that had both lymphoid and myeloid potential in vitro. After being transferred into uninfected alymphoid or malaria-infected hosts, IL-7Ralpha(+)c-Kit(hi) progenitors generated mainly myeloid cells that contributed to the clearance of infected erythrocytes in infected hosts. The generation of these infection-induced progenitors was critically dependent on interferon-gamma (IFN-gamma) signaling in hematopoietic progenitors. Thus, IFN-gamma is a key modulator of hematopoiesis and innate and adaptive immunity during acute malaria infection.
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21
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Bartels M, Geest CR, Bierings M, Buitenhuis M, Coffer PJ. Histone deacetylase inhibition modulates cell fate decisions during myeloid differentiation. Haematologica 2010; 95:1052-60. [PMID: 20107159 DOI: 10.3324/haematol.2009.008870] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND The clinical use of chromatin-modulating drugs, such as histone deacetylase inhibitors, for the treatment of bone marrow failure and hematopoietic malignancies has increased dramatically over the last few years. Nonetheless, little is currently known concerning their effects on myelopoiesis. DESIGN AND METHODS We utilized an ex vivo differentiation system in which umbilical cord blood-derived CD34(+) cells were treated with trichostatin A, sodium butyrate and valproic acid to evaluate the effect of histone deacetylase inhibitor treatment on myeloid lineage development, colony-forming potential, proliferation, and terminal neutrophil differentiation. RESULTS Trichostatin A treatment modestly reduced progenitor proliferation, while sodium butyrate and valproic acid resulted in concentration-dependent effects on proliferation and apoptosis. Addition of valproic acid uniquely stimulated CD34(+) proliferation. Sodium butyrate treatment inhibited terminal neutrophil differentiation both quantitatively and qualitatively. Addition of 100 microM valproic acid resulted in increased numbers of mature neutrophils with a block in differentiation at increasing concentrations. Sodium butyrate and valproic acid treatment resulted in increased acetylation of histones 3 and 4 while trichostatin A, sodium butyrate and valproic acid had differential effects on the acetylation of non-histone proteins. CONCLUSIONS Individual histone deacetylase inhibitors had specific effects on cell fate decisions during myeloid development. These data provide novel insights into the effects of histone deacetylase inhibitors on the regulation of normal hematopoiesis, which is of importance when considering utilizing these compounds for the treatment of myeloid malignancies and bone marrow failure syndromes.
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Affiliation(s)
- Marije Bartels
- Molecular Immunology Lab, Department of Immunology, University Medical Center, Lundlaan 6, 3584 EA Utrecht, the Netherlands
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