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Gao C, Zhang H, Wang Y, Wang S, Guo X, Han Y, Zhao H, An X. Global Transcriptomic and Characteristics Comparisons between Mouse Fetal Liver and Bone Marrow Definitive Erythropoiesis. Cells 2024; 13:1149. [PMID: 38995000 DOI: 10.3390/cells13131149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 06/30/2024] [Accepted: 07/02/2024] [Indexed: 07/13/2024] Open
Abstract
Erythropoiesis occurs first in the yolk sac as a transit "primitive" form, then is gradually replaced by the "definitive" form in the fetal liver (FL) during fetal development and in the bone marrow (BM) postnatally. While it is well known that differences exist between primitive and definitive erythropoiesis, the similarities and differences between FL and BM definitive erythropoiesis have not been studied. Here we performed comprehensive comparisons of erythroid progenitors and precursors at all maturational stages sorted from E16.5 FL and adult BM. We found that FL cells at all maturational stages were larger than their BM counterparts. We further found that FL BFU-E cells divided at a faster rate and underwent more cell divisions than BM BFU-E. Transcriptome comparison revealed that genes with increased expression in FL BFU-Es were enriched in cell division. Interestingly, the expression levels of glucocorticoid receptor Nr3c1, Myc and Myc downstream target Ccna2 were significantly higher in FL BFU-Es, indicating the role of the Nr3c1-Myc-Ccna2 axis in the enhanced proliferation/cell division of FL BFU-E cells. At the CFU-E stage, the expression of genes associated with hemoglobin biosynthesis were much higher in FL CFU-Es, indicating more hemoglobin production. During terminal erythropoiesis, overall temporal patterns in gene expression were conserved between the FL and BM. While biological processes related to translation, the tricarboxylic acid cycle and hypoxia response were upregulated in FL erythroblasts, those related to antiviral signal pathway were upregulated in BM erythroblasts. Our findings uncovered previously unrecognized differences between FL and BM definitive erythropoiesis and provide novel insights into erythropoiesis.
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Affiliation(s)
- Chengjie Gao
- School of Life Sciences, Zhengzhou University, Zhengzhou 450001, China
- Laboratory of Membrane Biology, New York Blood Center, New York, NY 10065, USA
| | - Huan Zhang
- School of Life Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Yaomei Wang
- Laboratory of Membrane Biology, New York Blood Center, New York, NY 10065, USA
- Department of Hematology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China
| | - Shihui Wang
- Institute of Hematology, People's Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - Xinhua Guo
- Laboratory of Membrane Biology, New York Blood Center, New York, NY 10065, USA
| | - Yongshuai Han
- Laboratory of Membrane Biology, New York Blood Center, New York, NY 10065, USA
| | - Huizhi Zhao
- School of Life Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Xiuli An
- Laboratory of Membrane Biology, New York Blood Center, New York, NY 10065, USA
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2
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Socolovsky M. Pas de deux: the coordinated coupling of erythroid differentiation with the cell cycle. Curr Opin Hematol 2024; 31:96-103. [PMID: 38415760 PMCID: PMC11032070 DOI: 10.1097/moh.0000000000000811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
PURPOSE OF REVIEW Recent work reveals that cell cycle duration and structure are remodeled in lock-step with distinct stages of erythroid differentiation. These cell cycle features have regulatory roles in differentiation, beyond the generic function of increasing cell number. RECENT FINDINGS Developmental progression through the early erythroid progenitor stage (known as colony-forming-erythroid, or 'CFU-e') is characterized by gradual shortening of G1 phase of the cycle. This process culminates in a key transcriptional switch to erythroid terminal differentiation (ETD) that is synchronized with, and dependent on, S phase progression. Further, the CFU-e/ETD switch takes place during an unusually short S phase, part of an exceptionally short cell cycle that is characterized by globally fast replication fork speeds. Cell cycle and S phase speed can alter developmental events during erythroid differentiation, through pathways that are targeted by glucocorticoid and erythropoietin signaling during the erythroid stress response. SUMMARY There is close inter-dependence between cell cycle structure and duration, S phase and replication fork speeds, and erythroid differentiation stage. Further, modulation of cell cycle structure and speed cycle impacts developmental progression and cell fate decisions during erythroid differentiation. These pathways may offer novel mechanistic insights and potential therapeutic targets.
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Affiliation(s)
- Merav Socolovsky
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
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3
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Maynard AG, Pohl NK, Mueller AP, Petrova B, Wong AYL, Wang P, Culhane AJ, Brook JR, Hirsch LM, Hoang N, Kirkland O, Braun T, Ducamp S, Fleming MD, Li H, Kanarek N. Folate depletion induces erythroid differentiation through perturbation of de novo purine synthesis. SCIENCE ADVANCES 2024; 10:eadj9479. [PMID: 38295180 PMCID: PMC10830111 DOI: 10.1126/sciadv.adj9479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 12/29/2023] [Indexed: 02/02/2024]
Abstract
Folate, an essential vitamin, is a one-carbon acceptor and donor in key metabolic reactions. Erythroid cells harbor a unique sensitivity to folate deprivation, as revealed by the primary pathological manifestation of nutritional folate deprivation: megaloblastic anemia. To study this metabolic sensitivity, we applied mild folate depletion to human and mouse erythroid cell lines and primary murine erythroid progenitors. We show that folate depletion induces early blockade of purine synthesis and accumulation of the purine synthesis intermediate and signaling molecule, 5'-phosphoribosyl-5-aminoimidazole-4-carboxamide (AICAR), followed by enhanced heme metabolism, hemoglobin synthesis, and erythroid differentiation. This is phenocopied by inhibition of folate metabolism using the inhibitor SHIN1, and by AICAR supplementation. Mechanistically, the metabolically driven differentiation is independent of mechanistic target of rapamycin complex 1 (mTORC1) and adenosine 5'-monophosphate-activated protein kinase (AMPK) and is instead mediated by protein kinase C. Our findings suggest that folate deprivation-induced premature differentiation of erythroid progenitor cells is a molecular etiology to folate deficiency-induced anemia.
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Affiliation(s)
- Adam G. Maynard
- Department of Pathology, Boston Children’s Hospital, Boston, MA 02115, USA
- Graduate Program in Biological and Biomedical Sciences, Harvard Medical School, Boston, MA 02115, USA
| | - Nancy K. Pohl
- Department of Pathology, Boston Children’s Hospital, Boston, MA 02115, USA
- Harvard School of Public Health PhD Program, Boston, MA 02115, USA
| | - Annabel P. Mueller
- Department of Pathology, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Boryana Petrova
- Department of Pathology, Boston Children’s Hospital, Boston, MA 02115, USA
- Harvard Medical School, Boston, MA 02115, USA
| | - Alan Y. L. Wong
- Department of Pathology, Boston Children’s Hospital, Boston, MA 02115, USA
- Harvard/MIT MD-PhD Program, Harvard Medical School, Boston, MA 02115, USA
| | - Peng Wang
- Department of Pathology, Boston Children’s Hospital, Boston, MA 02115, USA
- Harvard Medical School, Boston, MA 02115, USA
| | - Andrew J. Culhane
- Department of Pathology, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Jeannette R. Brook
- Department of Pathology, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Leah M. Hirsch
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Ngoc Hoang
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Orville Kirkland
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Tatum Braun
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Sarah Ducamp
- Department of Pathology, Boston Children’s Hospital, Boston, MA 02115, USA
- Harvard Medical School, Boston, MA 02115, USA
| | - Mark D. Fleming
- Department of Pathology, Boston Children’s Hospital, Boston, MA 02115, USA
- Harvard Medical School, Boston, MA 02115, USA
| | - Hojun Li
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
- Division of Hematology/Oncology, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA
- Department of Pediatrics, University of California, San Diego, CA 92093, USA
| | - Naama Kanarek
- Department of Pathology, Boston Children’s Hospital, Boston, MA 02115, USA
- Harvard Medical School, Boston, MA 02115, USA
- Broad Institute of Harvard and MIT, Cambridge, MA, 02142, USA
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4
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Li Z, Su M, Xie X, Wang P, Bi H, Li E, Ren K, Dong L, Lv Z, Ma X, Liu Y, Zhao B, Peng Y, Liu J, Liu L, Yang J, Ji P, Mei Y. mDia formins form hetero-oligomers and cooperatively maintain murine hematopoiesis. PLoS Genet 2023; 19:e1011084. [PMID: 38157491 PMCID: PMC10756686 DOI: 10.1371/journal.pgen.1011084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 11/22/2023] [Indexed: 01/03/2024] Open
Abstract
mDia formin proteins regulate the dynamics and organization of the cytoskeleton through their linear actin nucleation and polymerization activities. We previously showed that mDia1 deficiency leads to aberrant innate immune activation and induces myelodysplasia in a mouse model, and mDia2 regulates enucleation and cytokinesis of erythroblasts and the engraftment of hematopoietic stem and progenitor cells (HSPCs). However, whether and how mDia formins interplay and regulate hematopoiesis under physiological and stress conditions remains unknown. Here, we found that both mDia1 and mDia2 are required for HSPC regeneration under stress, such as serial plating, aging, and reconstitution after myeloid ablation. We showed that mDia1 and mDia2 form hetero-oligomers through the interactions between mDia1 GBD-DID and mDia2 DAD domains. Double knockout of mDia1 and mDia2 in hematopoietic cells synergistically impaired the filamentous actin network and serum response factor-involved transcriptional signaling, which led to declined HSPCs, severe anemia, and significant mortality in neonates and newborn mice. Our data demonstrate the potential roles of mDia hetero-oligomerization and their non-rodent functions in the regulation of HSPCs activity and orchestration of hematopoiesis.
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Affiliation(s)
- Zhaofeng Li
- Hunan Provincial Key Laboratory of Animal Model and Molecular Medicine, Hunan University, Changsha, China
- School of Biomedical Sciences, Hunan University, Changsha, China
| | - Meng Su
- Hunan Provincial Key Laboratory of Animal Model and Molecular Medicine, Hunan University, Changsha, China
- School of Biomedical Sciences, Hunan University, Changsha, China
| | - Xinshu Xie
- Hunan Provincial Key Laboratory of Animal Model and Molecular Medicine, Hunan University, Changsha, China
- School of Biomedical Sciences, Hunan University, Changsha, China
| | - Pan Wang
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Honghao Bi
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Ermin Li
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Kehan Ren
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Lili Dong
- Hunan Provincial Key Laboratory of Animal Model and Molecular Medicine, Hunan University, Changsha, China
- School of Biomedical Sciences, Hunan University, Changsha, China
| | - Zhiyi Lv
- Hunan Provincial Key Laboratory of Animal Model and Molecular Medicine, Hunan University, Changsha, China
- School of Biomedical Sciences, Hunan University, Changsha, China
| | - Xuezhen Ma
- Hunan Provincial Key Laboratory of Animal Model and Molecular Medicine, Hunan University, Changsha, China
- School of Biomedical Sciences, Hunan University, Changsha, China
| | - Yijie Liu
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Baobing Zhao
- Department of Pharmacology, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Yuanliang Peng
- Department of Hematology, the Second Xiangya Hospital; Molecular Biology Research Center, School of Life Sciences; Hunan Province Key Laboratory of Basic and Applied Hematology, Central South University; Changsha, China
| | - Jing Liu
- Department of Hematology, the Second Xiangya Hospital; Molecular Biology Research Center, School of Life Sciences; Hunan Province Key Laboratory of Basic and Applied Hematology, Central South University; Changsha, China
| | - Lu Liu
- Hunan Provincial Key Laboratory of Animal Model and Molecular Medicine, Hunan University, Changsha, China
- School of Biomedical Sciences, Hunan University, Changsha, China
| | - Jing Yang
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Peng Ji
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Yang Mei
- Hunan Provincial Key Laboratory of Animal Model and Molecular Medicine, Hunan University, Changsha, China
- School of Biomedical Sciences, Hunan University, Changsha, China
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5
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Quotti Tubi L, Canovas Nunes S, Mandato E, Pizzi M, Vitulo N, D’Agnolo M, Colombatti R, Martella M, Boaro MP, Doriguzzi Breatta E, Fregnani A, Spinello Z, Nabergoj M, Filhol O, Boldyreff B, Albiero M, Fadini GP, Gurrieri C, Vianello F, Semenzato G, Manni S, Trentin L, Piazza F. CK2β Regulates Hematopoietic Stem Cell Biology and Erythropoiesis. Hemasphere 2023; 7:e978. [PMID: 38026791 PMCID: PMC10673422 DOI: 10.1097/hs9.0000000000000978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 09/25/2023] [Indexed: 12/01/2023] Open
Abstract
The Ser-Thr kinase CK2 plays important roles in sustaining cell survival and resistance to stress and these functions are exploited by different types of blood tumors. Yet, the physiological involvement of CK2 in normal blood cell development is poorly known. Here, we discovered that the β regulatory subunit of CK2 is critical for normal hematopoiesis in the mouse. Fetal livers of conditional CK2β knockout embryos showed increased numbers of hematopoietic stem cells associated to a higher proliferation rate compared to control animals. Both hematopoietic stem and progenitor cells (HSPCs) displayed alterations in the expression of transcription factors involved in cell quiescence, self-renewal, and lineage commitment. HSPCs lacking CK2β were functionally impaired in supporting both in vitro and in vivo hematopoiesis as demonstrated by transplantation assays. Furthermore, KO mice developed anemia due to a reduced number of mature erythroid cells. This compartment was characterized by dysplasia, proliferative defects at early precursor stage, and apoptosis at late-stage erythroblasts. Erythroid cells exhibited a marked compromise of signaling cascades downstream of the cKit and erythropoietin receptor, with a defective activation of ERK/JNK, JAK/STAT5, and PI3K/AKT pathways and perturbations of several transcriptional programs as demonstrated by RNA-Seq analysis. Moreover, we unraveled an unforeseen molecular mechanism whereby CK2 sustains GATA1 stability and transcriptional proficiency. Thus, our work demonstrates new and crucial functions of CK2 in HSPC biology and in erythropoiesis.
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Affiliation(s)
- Laura Quotti Tubi
- Department of Medicine, Division of Hematology, University of Padova, Italy
- Laboratory of Normal and Malignant Hematopoiesis and Pathobiology of Myeloma and Lymphoma. Veneto Institute of Molecular Medicine (VIMM), Padova, Italy
| | - Sara Canovas Nunes
- Laboratory of Normal and Malignant Hematopoiesis and Pathobiology of Myeloma and Lymphoma. Veneto Institute of Molecular Medicine (VIMM), Padova, Italy
- Division of Hematology/Oncology, Boston Children’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Elisa Mandato
- Laboratory of Normal and Malignant Hematopoiesis and Pathobiology of Myeloma and Lymphoma. Veneto Institute of Molecular Medicine (VIMM), Padova, Italy
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Marco Pizzi
- Department of Medicine, Cytopathology and Surgical Pathology Unit, University of Padova, Italy
| | - Nicola Vitulo
- Department of Biotechnology, University of Verona, Italy
| | - Mirco D’Agnolo
- Department of Women’s and Child’s Health, University of Padova, Italy
| | | | | | - Maria Paola Boaro
- Department of Women’s and Child’s Health, University of Padova, Italy
| | - Elena Doriguzzi Breatta
- Department of Medicine, Division of Hematology, University of Padova, Italy
- Laboratory of Normal and Malignant Hematopoiesis and Pathobiology of Myeloma and Lymphoma. Veneto Institute of Molecular Medicine (VIMM), Padova, Italy
| | - Anna Fregnani
- Department of Medicine, Division of Hematology, University of Padova, Italy
- Laboratory of Normal and Malignant Hematopoiesis and Pathobiology of Myeloma and Lymphoma. Veneto Institute of Molecular Medicine (VIMM), Padova, Italy
| | - Zaira Spinello
- Department of Medicine, Division of Hematology, University of Padova, Italy
- Laboratory of Normal and Malignant Hematopoiesis and Pathobiology of Myeloma and Lymphoma. Veneto Institute of Molecular Medicine (VIMM), Padova, Italy
| | - Mitja Nabergoj
- Hematology Service, Institut Central des Hôpitaux (ICH), Hôpital du Valais, Sion, Switzerland
| | - Odile Filhol
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1036, Institute de Reserches en Technologies et Sciences pour le Vivant/Biologie du Cancer et de l’Infection, Grenoble, France
| | | | - Mattia Albiero
- Department of Surgery, Oncology and Gastroenterology, University of Padova, Italy
- Veneto Institute of Molecular Medicine, Experimental Diabetology Lab, Padova, Italy
| | - Gian Paolo Fadini
- Veneto Institute of Molecular Medicine, Experimental Diabetology Lab, Padova, Italy
- Department of Medicine, University of Padova, Italy
| | - Carmela Gurrieri
- Department of Medicine, Division of Hematology, University of Padova, Italy
- Laboratory of Normal and Malignant Hematopoiesis and Pathobiology of Myeloma and Lymphoma. Veneto Institute of Molecular Medicine (VIMM), Padova, Italy
| | - Fabrizio Vianello
- Department of Medicine, Division of Hematology, University of Padova, Italy
- Laboratory of Normal and Malignant Hematopoiesis and Pathobiology of Myeloma and Lymphoma. Veneto Institute of Molecular Medicine (VIMM), Padova, Italy
| | - Gianpietro Semenzato
- Department of Medicine, Division of Hematology, University of Padova, Italy
- Laboratory of Normal and Malignant Hematopoiesis and Pathobiology of Myeloma and Lymphoma. Veneto Institute of Molecular Medicine (VIMM), Padova, Italy
| | - Sabrina Manni
- Department of Medicine, Division of Hematology, University of Padova, Italy
- Laboratory of Normal and Malignant Hematopoiesis and Pathobiology of Myeloma and Lymphoma. Veneto Institute of Molecular Medicine (VIMM), Padova, Italy
| | - Livio Trentin
- Department of Medicine, Division of Hematology, University of Padova, Italy
- Laboratory of Normal and Malignant Hematopoiesis and Pathobiology of Myeloma and Lymphoma. Veneto Institute of Molecular Medicine (VIMM), Padova, Italy
| | - Francesco Piazza
- Department of Medicine, Division of Hematology, University of Padova, Italy
- Laboratory of Normal and Malignant Hematopoiesis and Pathobiology of Myeloma and Lymphoma. Veneto Institute of Molecular Medicine (VIMM), Padova, Italy
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6
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Doty RT, Lausted CG, Munday AD, Yang Z, Yan X, Meng C, Tian Q, Abkowitz JL. The transcriptomic landscape of normal and ineffective erythropoiesis at single-cell resolution. Blood Adv 2023; 7:4848-4868. [PMID: 37352261 PMCID: PMC10469080 DOI: 10.1182/bloodadvances.2023010382] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/15/2023] [Accepted: 06/07/2023] [Indexed: 06/25/2023] Open
Abstract
The anemias of myelodysplastic syndrome (MDS) and Diamond Blackfan anemia (DBA) are generally macrocytic and always reflect ineffective erythropoiesis yet result from diverse genetic mutations. To delineate shared mechanisms that lead to cell death, we studied the fate of single erythroid marrow cells from individuals with DBA or MDS-5q. We defined an unhealthy (vs healthy) differentiation trajectory using transcriptional pseudotime and cell surface proteins. The pseudotime trajectories diverge immediately after cells upregulate transferrin receptor (CD71), import iron, and initiate heme synthesis, although cell death occurs much later. Cells destined to die express high levels of heme-responsive genes, including ribosomal protein and globin genes, whereas surviving cells downregulate heme synthesis and upregulate DNA damage response, hypoxia, and HIF1 pathways. Surprisingly, 24% ± 12% of cells from control subjects follow the unhealthy trajectory, implying that heme might serve as a rheostat directing cells to live or die. When heme synthesis was inhibited with succinylacetone, more DBA cells followed the healthy trajectory and survived. We also noted high numbers of messages with retained introns that increased as erythroid cells matured, confirmed the rapid cycling of colony forming unit-erythroid, and demonstrated that cell cycle timing is an invariant property of differentiation stage. Including unspliced RNA in pseudotime determinations allowed us to reliably align independent data sets and accurately query stage-specific transcriptomic changes. MDS-5q (unlike DBA) results from somatic mutation, so many normal (unmutated) erythroid cells persist. By independently tracking erythroid differentiation of cells with and without chromosome 5q deletions, we gained insight into why 5q+ cells cannot expand to prevent anemia.
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Affiliation(s)
- Raymond T. Doty
- Division of Hematology, Department of Medicine, University of Washington, Seattle, WA
| | | | - Adam D. Munday
- Division of Hematology, Department of Medicine, University of Washington, Seattle, WA
| | - Zhantao Yang
- Division of Hematology, Department of Medicine, University of Washington, Seattle, WA
| | | | | | - Qiang Tian
- Institute for Systems Biology, Seattle, WA
| | - Janis L. Abkowitz
- Division of Hematology, Department of Medicine, University of Washington, Seattle, WA
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7
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Ginzburg Y, An X, Rivella S, Goldfarb A. Normal and dysregulated crosstalk between iron metabolism and erythropoiesis. eLife 2023; 12:e90189. [PMID: 37578340 PMCID: PMC10425177 DOI: 10.7554/elife.90189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 08/06/2023] [Indexed: 08/15/2023] Open
Abstract
Erythroblasts possess unique characteristics as they undergo differentiation from hematopoietic stem cells. During terminal erythropoiesis, these cells incorporate large amounts of iron in order to generate hemoglobin and ultimately undergo enucleation to become mature red blood cells, ultimately delivering oxygen in the circulation. Thus, erythropoiesis is a finely tuned, multifaceted process requiring numerous properly timed physiological events to maintain efficient production of 2 million red blood cells per second in steady state. Iron is required for normal functioning in all human cells, the erythropoietic compartment consuming the majority in light of the high iron requirements for hemoglobin synthesis. Recent evidence regarding the crosstalk between erythropoiesis and iron metabolism sheds light on the regulation of iron availability by erythroblasts and the consequences of insufficient as well as excess iron on erythroid lineage proliferation and differentiation. In addition, significant progress has been made in our understanding of dysregulated iron metabolism in various congenital and acquired malignant and non-malignant diseases. Finally, we report several actual as well as theoretical opportunities for translating the recently acquired robust mechanistic understanding of iron metabolism regulation to improve management of patients with disordered erythropoiesis, such as anemia of chronic inflammation, β-thalassemia, polycythemia vera, and myelodysplastic syndromes.
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Affiliation(s)
- Yelena Ginzburg
- Division of Hematology and Medical Oncology, The Tisch Cancer Institute, Icahn School of Medicine at Mount SinaiNew YorkUnited States
| | - Xiuli An
- LFKRI, New York Blood CenterNew YorkUnited States
| | - Stefano Rivella
- Department of Pediatrics, Division of Hematology, The Children’s Hospital of PhiladelphiaPhiladelphiaUnited States
- Cell and Molecular Biology affinity group (CAMB), University of PennsylvaniaPhiladelphiaUnited States
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics at the Children’s Hospital of PhiladelphiaPhiladelphiaUnited States
- Penn Center for Musculoskeletal Disorders at the Children’s Hospital of PhiladelphiaPhiladelphiaUnited States
- Perelman School of Medicine, University of PennsylvaniaPhiladelphiaUnited States
- Institute for Regenerative Medicine at University of PennsylvaniaPhiladelphiaUnited States
- RNA Institute at University of PennsylvaniaPhiladelphiaUnited States
| | - Adam Goldfarb
- Department of Pathology, University of VirginiaCharlottesvilleUnited States
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8
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Zhang Y, Shi L, Yang K, Liu X, Lv X. Transglutaminase 2 regulates terminal erythroid differentiation via cross-linking activity. Front Cell Dev Biol 2023; 11:1183176. [PMID: 37169024 PMCID: PMC10164954 DOI: 10.3389/fcell.2023.1183176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 04/14/2023] [Indexed: 05/13/2023] Open
Abstract
Transglutaminase 2 (TGM2) is a versatile enzyme that modulates cell survival and differentiation. However, its role in terminal erythroid differentiation is poorly understood. In this study, we investigated the function of TGM2 in primary fetal liver erythroid differentiation. We predicted TGM2 as an upstream regulator via ingenuity pathway analysis (IPA), and found that its expression was increased at both RNA and protein level during terminal erythroid differentiation. TGM2 cross-linking activity inhibitors GK921 and Z-DON suppressed erythroid maturation and enucleation, while its GTPase inhibitor LDN27219 had no such effect. Z-DON treatment arrested differentiation at basophilic erythroblast stage, and interfered with cell cycle progression. RT-PCR demonstrated decreased GATA-1 and KLF1, and disarranged cyclin, CDKI and E2F family genes expression after Z-DON treatment. In conclusion, TGM2 regulates terminal erythroid differentiation through its cross-linking enzyme activity.
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Affiliation(s)
- Yingying Zhang
- State Key Laboratory of Medical Molecular Biology, Haihe Laboratory of Cell Ecosystem, Department of Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Lifang Shi
- State Key Laboratory of Medical Molecular Biology, Haihe Laboratory of Cell Ecosystem, Department of Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Changping Center for Disease Control and Prevention, Beijing, China
| | - Ke Yang
- State Key Laboratory of Medical Molecular Biology, Haihe Laboratory of Cell Ecosystem, Department of Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xuehui Liu
- State Key Laboratory of Medical Molecular Biology, Haihe Laboratory of Cell Ecosystem, Department of Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- *Correspondence: Xuehui Liu, ; Xiang Lv,
| | - Xiang Lv
- State Key Laboratory of Medical Molecular Biology, Haihe Laboratory of Cell Ecosystem, Department of Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- *Correspondence: Xuehui Liu, ; Xiang Lv,
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9
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Piszczatowski RT, Schwenger E, Sundaravel S, Stein CM, Liu Y, Stanley P, Verma A, Zheng D, Seidel RD, Almo SC, Townley RA, Bülow HE, Steidl U. A glycan-based approach to cell characterization and isolation: Hematopoiesis as a paradigm. J Exp Med 2022; 219:e20212552. [PMID: 36066492 PMCID: PMC9455685 DOI: 10.1084/jem.20212552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 05/28/2022] [Accepted: 07/18/2022] [Indexed: 12/05/2022] Open
Abstract
Cell surfaces display a wide array of molecules that confer identity. While flow cytometry and cluster of differentiation (CD) markers have revolutionized cell characterization and purification, functionally heterogeneous cellular subtypes remain unresolvable by the CD marker system alone. Using hematopoietic lineages as a paradigm, we leverage the extraordinary molecular diversity of heparan sulfate (HS) glycans to establish cellular "glycotypes" by utilizing a panel of anti-HS single-chain variable fragment antibodies (scFvs). Prospective sorting with anti-HS scFvs identifies functionally distinct glycotypes within heterogeneous pools of mouse and human hematopoietic progenitor cells and enables further stratification of immunophenotypically pure megakaryocyte-erythrocyte progenitors. This stratification correlates with expression of a heptad of HS-related genes that is reflective of the HS epitope recognized by specific anti-HS scFvs. While we show that HS glycotyping provides an orthogonal set of tools for resolution of hematopoietic lineages, we anticipate broad utility of this approach in defining and isolating novel, viable cell types across diverse tissues and species.
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Affiliation(s)
| | - Emily Schwenger
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY
| | - Sriram Sundaravel
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY
| | - Catarina M. Stein
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY
| | - Yang Liu
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY
| | - Pamela Stanley
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY
- Montefiore Einstein Cancer Center, Albert Einstein College of Medicine-Montefiore Health System, Bronx, NY
| | - Amit Verma
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY
- Departments of Oncology and Medicine, Albert Einstein College of Medicine-Montefiore Health System, Bronx, NY
- Montefiore Einstein Cancer Center, Albert Einstein College of Medicine-Montefiore Health System, Bronx, NY
- Department of Biological Sciences, University of Wisconsin Milwaukee, Milwaukee, WI
- Blood Cancer Institute, Albert Einstein College of Medicine, Bronx, NY
| | - Deyou Zheng
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY
- The Saul R. Korey Department of Neurology, Albert Einstein College of Medicine, Bronx, NY
| | - Ronald D. Seidel
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY
| | - Steven C. Almo
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY
- Montefiore Einstein Cancer Center, Albert Einstein College of Medicine-Montefiore Health System, Bronx, NY
| | - Robert A. Townley
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY
- Department of Biological Sciences, University of Wisconsin Milwaukee, Milwaukee, WI
| | - Hannes E. Bülow
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY
- Montefiore Einstein Cancer Center, Albert Einstein College of Medicine-Montefiore Health System, Bronx, NY
| | - Ulrich Steidl
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY
- Departments of Oncology and Medicine, Albert Einstein College of Medicine-Montefiore Health System, Bronx, NY
- Montefiore Einstein Cancer Center, Albert Einstein College of Medicine-Montefiore Health System, Bronx, NY
- Blood Cancer Institute, Albert Einstein College of Medicine, Bronx, NY
- Ruth L. and David S. Gottesman Institute for Stem Cell Research and Regenerative Medicine, Albert Einstein College of Medicine, Bronx, NY
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10
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Jeziorska DM, Tunnacliffe EAJ, Brown JM, Ayyub H, Sloane-Stanley J, Sharpe JA, Lagerholm BC, Babbs C, Smith AJH, Buckle VJ, Higgs DR. On-microscope staging of live cells reveals changes in the dynamics of transcriptional bursting during differentiation. Nat Commun 2022; 13:6641. [PMID: 36333299 PMCID: PMC9636426 DOI: 10.1038/s41467-022-33977-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 10/07/2022] [Indexed: 11/06/2022] Open
Abstract
Determining the mechanisms by which genes are switched on and off during development is a key aim of current biomedical research. Gene transcription has been widely observed to occur in a discontinuous fashion, with short bursts of activity interspersed with periods of inactivity. It is currently not known if or how this dynamic behaviour changes as mammalian cells differentiate. To investigate this, using an on-microscope analysis, we monitored mouse α-globin transcription in live cells throughout erythropoiesis. We find that changes in the overall levels of α-globin transcription are most closely associated with changes in the fraction of time a gene spends in the active transcriptional state. We identify differences in the patterns of transcriptional bursting throughout differentiation, with maximal transcriptional activity occurring in the mid-phase of differentiation. Early in differentiation, we observe increased fluctuation in transcriptional activity whereas at the peak of gene expression, in early erythroblasts, transcription is relatively stable. Later during differentiation as α-globin expression declines, we again observe more variability in transcription within individual cells. We propose that the observed changes in transcriptional behaviour may reflect changes in the stability of active transcriptional compartments as gene expression is regulated during differentiation.
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Affiliation(s)
- D. M. Jeziorska
- grid.4991.50000 0004 1936 8948MRC Weatherall Institute for Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS UK ,Present Address: Nucleome Therapeutics Ltd., BioEscalator, The Innovation Building, Old Road Campus, Oxford, OX3 7FZ UK
| | - E. A. J. Tunnacliffe
- grid.4991.50000 0004 1936 8948MRC Weatherall Institute for Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS UK
| | - J. M. Brown
- grid.4991.50000 0004 1936 8948MRC Weatherall Institute for Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS UK
| | - H. Ayyub
- grid.4991.50000 0004 1936 8948MRC Weatherall Institute for Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS UK
| | - J. Sloane-Stanley
- grid.4991.50000 0004 1936 8948MRC Weatherall Institute for Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS UK
| | - J. A. Sharpe
- grid.4991.50000 0004 1936 8948MRC Weatherall Institute for Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS UK
| | - B. C. Lagerholm
- grid.4991.50000 0004 1936 8948Wolfson Imaging Centre, MRC Weatherall Institute for Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS UK ,grid.4991.50000 0004 1936 8948Present Address: The Kennedy Institute Of Rheumatology, University of Oxford, Old Road Campus, Oxford, OX3 7FY UK
| | - C. Babbs
- grid.4991.50000 0004 1936 8948MRC Weatherall Institute for Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS UK
| | - A. J. H. Smith
- grid.4991.50000 0004 1936 8948MRC Weatherall Institute for Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS UK ,grid.4305.20000 0004 1936 7988Present Address: MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, EH16 4UU UK
| | - V. J. Buckle
- grid.4991.50000 0004 1936 8948MRC Weatherall Institute for Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS UK
| | - D. R. Higgs
- grid.4991.50000 0004 1936 8948MRC Weatherall Institute for Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS UK ,grid.4991.50000 0004 1936 8948Chinese Academy of Medical Sciences Oxford Institute, Nuffield Department of Medicine, University of Oxford, Old Road Campus, Oxford, OX3 7BN UK
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11
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The accumulation of miR-125b-5p is indispensable for efficient erythroblast enucleation. Cell Death Dis 2022; 13:886. [PMID: 36270980 PMCID: PMC9586935 DOI: 10.1038/s41419-022-05331-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 09/29/2022] [Accepted: 10/07/2022] [Indexed: 11/16/2022]
Abstract
Erythroblast enucleation is a precisely regulated but not clearly understood process. Polycythemia shows pathological erythroblast enucleation, and we discovered a low miR-125b-5p level in terminal erythroblasts of patients with polycythemia vera (PV) compared to those of healthy controls. Exogenous upregulation of miR-125b-5p levels restored the enucleation rate to normal levels. Direct downregulation of miR-125b-5p in mouse erythroblasts simulated the enucleation issue found in patients with PV, and miR-125b-5p accumulation was found in enucleating erythroblasts, collectively suggesting the importance of miR-125b-5p accumulation for erythroblast enucleation. To elucidate the role of miR-125b-5p in enucleation, gain- and loss-of-function studies were performed. Overexpression of miR-125b-5p improved the enucleation of erythroleukemia cells and primary erythroblasts. Infused erythroblasts with higher levels of miR-125b-5p also exhibited accelerated enucleation. In contrast, miR-125b-5p inhibitors significantly suppressed erythrocyte enucleation. Intracellular imaging revealed that in addition to cytoskeletal assembly and nuclear condensation, miR-125b-5p overexpression resulted in mitochondrial reduction and depolarization. Real-time PCR, western blot analysis, luciferase reporter assays, small molecule inhibitor supplementation and gene rescue assays revealed that Bcl-2, as a direct target of miR-125b-5p, was one of the key mediators of miR-125b-5p during enucleation. Following suppression of Bcl-2, the activation of caspase-3 and subsequent activation of ROCK-1 resulted in cytoskeletal rearrangement and enucleation. In conclusion, this study is the first to reveal the pivotal role of miR-125b-5p in erythroblast enucleation.
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12
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Modepalli S, Martinez-Morilla S, Venkatesan S, Fasano J, Paulsen K, Görlich D, Hattangadi S, Kupfer GM. An In Vivo Model for Elucidating the Role of an Erythroid-Specific Isoform of Nuclear Export Protein Exportin 7 (Xpo7) in Murine Erythropoiesis. Exp Hematol 2022; 114:22-32. [PMID: 35973480 PMCID: PMC10165728 DOI: 10.1016/j.exphem.2022.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 08/05/2022] [Accepted: 08/06/2022] [Indexed: 11/04/2022]
Abstract
Erythroid nuclear condensation is a complex process in which compaction to one-tenth its original size occurs in an active nucleus simultaneously undergoing transcription and cell division. We previously found that the nuclear exportin Exportin7 (Xpo7), which is erythroid- specific and highly induced during terminal erythropoiesis, facilitates nuclear condensation. We also identified a previously unannotated, erythroid-specific isoform of Xpo7 (Xpo7B) containing a novel first exon Xpo7-1b expressed only in late Ter119+ erythroblasts. To better understand the functional difference between the erythroid Xpo7B isoform and the ubiquitous isoform (Xpo7A) containing the original first exon Xpo7-1a, we created gene-targeted mouse models lacking either exon Xpo7-1a or Xpo7-1b, or both exons 4 and 5, which are completely null for Xpo7 expression. We found that deficiency in Xpo7A does not affect steady-state nor stress erythropoiesis. In contrast, mice lacking the erythroid isoform, Xpo7B, exhibit a mild anemia as well as altered stress erythropoiesis. Complete Xpo7 deficiency resulted in partially penetrant embryonic lethality at the stage when definitive erythropoiesis is prominent in the fetal liver. Inducible complete knockdown of Xpo7 confirms that both steady-state erythropoiesis and stress erythropoiesis are affected. We also observe that Xpo7 deficiency downregulates the expression of important stress response factors, such as Gdf15 and Smad3. We conclude that the erythroid-specific isoform of Xpo7 is important for both steady-state and stress erythropoiesis in mice.
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Affiliation(s)
- Susree Modepalli
- Department of Molecular Oncology, Georgetown University, Washington DC
| | | | - Srividhya Venkatesan
- Department of Pediatric Hematology-Oncology, Yale School of Medicine, New Haven, CT
| | - James Fasano
- Department of Pediatric Hematology-Oncology, Yale School of Medicine, New Haven, CT
| | - Katerina Paulsen
- Department of Cellular Logistics, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Dirk Görlich
- Department of Cellular Logistics, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Shilpa Hattangadi
- Division of Kidney, Urologic, and Hematologic Diseases, National Institutes of Health, Bethesda, MD.
| | - Gary M Kupfer
- Department of Molecular Oncology, Georgetown University, Washington DC.
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13
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Gut commensal bacteria enhance pathogenesis of a tumorigenic murine retrovirus. Cell Rep 2022; 40:111341. [PMID: 36103821 DOI: 10.1016/j.celrep.2022.111341] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 05/24/2022] [Accepted: 08/18/2022] [Indexed: 11/20/2022] Open
Abstract
The influence of the microbiota on viral transmission and replication is well appreciated. However, its impact on retroviral pathogenesis outside of transmission/replication control remains unknown. Using murine leukemia virus (MuLV), we found that some commensal bacteria promoted the development of leukemia induced by this retrovirus. The promotion of leukemia development by commensals is due to suppression of the adaptive immune response through upregulation of several negative regulators of immunity. These negative regulators include Serpinb9b and Rnf128, which are associated with a poor prognosis of some spontaneous human cancers. Upregulation of Serpinb9b is mediated by sensing of bacteria by the NOD1/NOD2/RIPK2 pathway. This work describes a mechanism by which the microbiota enhances tumorigenesis within gut-distant organs and points at potential targets for cancer therapy.
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14
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Tátrai P, Gergely F. Centrosome function is critical during terminal erythroid differentiation. EMBO J 2022; 41:e108739. [PMID: 35678476 PMCID: PMC9289712 DOI: 10.15252/embj.2021108739] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 05/03/2022] [Accepted: 05/25/2022] [Indexed: 11/26/2022] Open
Abstract
Red blood cells are produced by terminal erythroid differentiation, which involves the dramatic morphological transformation of erythroblasts into enucleated reticulocytes. Microtubules are important for enucleation, but it is not known if the centrosome, a key microtubule-organizing center, is required as well. Mice lacking the conserved centrosome component, CDK5RAP2, are likely to have defective erythroid differentiation because they develop macrocytic anemia. Here, we show that fetal liver-derived, CDK5RAP2-deficient erythroid progenitors generate fewer and larger reticulocytes, hence recapitulating features of macrocytic anemia. In erythroblasts, but not in embryonic fibroblasts, loss of CDK5RAP2 or pharmacological depletion of centrosomes leads to highly aberrant spindle morphologies. Consistent with such cells exiting mitosis without chromosome segregation, tetraploidy is frequent in late-stage erythroblasts, thereby giving rise to fewer but larger reticulocytes than normal. Our results define a critical role for CDK5RAP2 and centrosomes in spindle formation specifically during blood production. We propose that disruption of centrosome and spindle function could contribute to the emergence of macrocytic anemias, for instance, due to nutritional deficiency or exposure to chemotherapy.
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Affiliation(s)
- Péter Tátrai
- Cancer Research UK Cambridge InstituteLi Ka Shing CentreUniversity of CambridgeCambridgeUK
- Present address:
Solvo BiotechnologyBudapestHungary
| | - Fanni Gergely
- Cancer Research UK Cambridge InstituteLi Ka Shing CentreUniversity of CambridgeCambridgeUK
- Department of BiochemistryUniversity of OxfordOxfordUK
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15
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Ray S, Chee L, Zhou Y, Schaefer MA, Naldrett MJ, Alvarez S, Woods NT, Hewitt K. Functional requirements for a Samd14-capping protein complex in stress erythropoiesis. eLife 2022; 11:76497. [PMID: 35713400 PMCID: PMC9282853 DOI: 10.7554/elife.76497] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 06/06/2022] [Indexed: 11/18/2022] Open
Abstract
Acute anemia induces rapid expansion of erythroid precursors and accelerated differentiation to replenish erythrocytes. Paracrine signals—involving cooperation between stem cell factor (SCF)/Kit signaling and other signaling inputs—are required for the increased erythroid precursor activity in anemia. Our prior work revealed that the sterile alpha motif (SAM) domain 14 (Samd14) gene increases the regenerative capacity of the erythroid system in a mouse genetic model and promotes stress-dependent Kit signaling. However, the mechanism underlying Samd14’s role in stress erythropoiesis is unknown. We identified a protein-protein interaction between Samd14 and the α- and β-heterodimers of the F-actin capping protein (CP) complex. Knockdown of the CP β subunit increased erythroid maturation in murine ex vivo cultures and decreased colony forming potential of stress erythroid precursors. In a genetic complementation assay for Samd14 activity, our results revealed that the Samd14-CP interaction is a determinant of erythroid precursor cell levels and function. Samd14-CP promotes SCF/Kit signaling in CD71med spleen erythroid precursors. Given the roles of Kit signaling in hematopoiesis and Samd14 in Kit pathway activation, this mechanism may have pathological implications in acute/chronic anemia. Anemia is a condition in which the body has a shortage of healthy red blood cells to carry enough oxygen to support its organs. A range of factors are known to cause anemia, including traumatic blood loss, toxins or nutritional deficiency. An estimated one-third of all women of reproductive age are anemic, which can cause tiredness, weakness and shortness of breath. Severe anemia drives the release of hormones and growth factors, leading to a rapid regeneration of precursor red blood cells to replenish the supply in the blood. To understand how red blood cell regeneration is controlled, Ray et al. studied proteins involved in regenerating blood using mice in which anemia had been induced with chemicals. Previous research had shown that the protein Samd14 is produced at higher quantities in individuals with anemia, and is involved with the recovery of lost red blood cells. However, it is not known how the Samd14 protein plays a role in regenerating blood cells, or whether Samd14 interacts with other proteins required for red blood cell production. To shed light on these questions, mouse cells exposed to anemia conditions were used to see what proteins Samd14 binds to. Purifying Samd14 revealed that it interacts with the actin capping protein. This interaction relies on a specific region of Samd14 that is similar to regions in other proteins that bind capping proteins. Ray et al. found that the interaction between Samd14 and the actin capping protein increased the signals needed for the development and survival of new red blood cells. These results identify a signaling mechanism that, if disrupted, could cause anemia to develop. They lead to a better understanding of how our bodies recover from anemia, and potential avenues to treat this condition.
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Affiliation(s)
- Suhita Ray
- Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, United States
| | - Linda Chee
- Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, United States
| | - Yichao Zhou
- Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, United States
| | - Meg A Schaefer
- Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, United States
| | - Michael J Naldrett
- Proteomics and Metabolomics Facility, University of Nebraska-Lincoln, Lincoln, United States
| | - Sophie Alvarez
- Proteomics and Metabolomics Facility, University of Nebraska-Lincoln, Lincoln, United States
| | - Nicholas T Woods
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, United States
| | - Kyle Hewitt
- Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, United States
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16
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Sjögren SE, Chen J, Mattebo A, Alattar AG, Karlsson H, Siva K, Soneji S, Tedgård U, Chen JJ, Gram M, Flygare J. Targeting elevated heme levels to treat a mouse model for Diamond-Blackfan Anemia. Exp Hematol 2022; 105:50-61. [PMID: 34757171 PMCID: PMC10499113 DOI: 10.1016/j.exphem.2021.10.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 10/19/2021] [Accepted: 10/25/2021] [Indexed: 11/26/2022]
Abstract
Diamond-Blackfan anemia (DBA) is a rare genetic disorder in which patients present a scarcity of erythroid precursors in an otherwise normocellular bone marrow. Most, but not all, patients carry mutations in ribosomal proteins such as RPS19, suggesting that compromised mRNA translation and ribosomal stress are pathogenic mechanisms causing depletion of erythroid precursors. To gain further insight to disease mechanisms in DBA, we performed a custom short hairpin RNA (shRNA) based screen against 750 genes hypothesized to affect DBA pathophysiology. Among the hits were two shRNAs against the erythroid specific heme-regulated eIF2α kinase (HRI), which is a negative regulator of mRNA translation. This study shows that shRNA-mediated HRI silencing or loss of one HRI allele improves expansion of Rps19-deficient erythroid precursors, as well as improves the anemic phenotype in Rps19-deficient animals. We found that Rps19-deficient erythroblasts have elevated levels of unbound intracellular heme, which is normalized by HRI heterozygosity. Additionally, targeting elevated heme levels by treating cells with the heme scavenger alpha-1-microglobulin (A1M), increased proliferation of Rps19-deficient erythroid precursors and decreased heme levels in a disease-specific manner. HRI heterozygosity, but not A1M treatment, also decreased the elevated p53 activity observed in Rps19-deficient cells, indicating that p53 activation is caused by ribosomal stress and aberrant mRNA translation and not heme overload in Rps19-deficiency. Together, these findings suggest that targeting elevated heme levels is a promising new treatment strategy for DBA.
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Affiliation(s)
- Sara E Sjögren
- Department of molecular medicine and gene therapy, Lund University, Lund, Sweden; Stem cell center, Lund University, Lund, Sweden
| | - Jun Chen
- Department of molecular medicine and gene therapy, Lund University, Lund, Sweden; Stem cell center, Lund University, Lund, Sweden
| | - Alexander Mattebo
- Department of molecular medicine and gene therapy, Lund University, Lund, Sweden; Stem cell center, Lund University, Lund, Sweden
| | - Abdul G Alattar
- Department of molecular medicine and gene therapy, Lund University, Lund, Sweden; Stem cell center, Lund University, Lund, Sweden; Department of Pediatrics, Lund University, Lund, Sweden
| | - Helena Karlsson
- Department of Infection Medicine, Lund University, Lund, Sweden; Guard Therapeutics AB, Lund, Sweden
| | - Kavitha Siva
- Department of molecular medicine and gene therapy, Lund University, Lund, Sweden; Stem cell center, Lund University, Lund, Sweden
| | - Shamit Soneji
- Stem cell center, Lund University, Lund, Sweden; Division of Molecular Hematology, Lund University, Lund, Sweden
| | - Ulf Tedgård
- Department of Pediatric Hematology and Oncology, Skåne University Hospital, Lund, Sweden
| | - Jane-Jane Chen
- Institute for Biomedical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, US
| | - Magnus Gram
- Department of Infection Medicine, Lund University, Lund, Sweden; Guard Therapeutics AB, Lund, Sweden
| | - Johan Flygare
- Department of molecular medicine and gene therapy, Lund University, Lund, Sweden; Stem cell center, Lund University, Lund, Sweden.
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17
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Lu Z, Huang L, Li Y, Xu Y, Zhang R, Zhou Q, Sun Q, Lu Y, Chen J, Shen Y, Li J, Zhao B. Fine-Tuning of Cholesterol Homeostasis Controls Erythroid Differentiation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2102669. [PMID: 34739188 PMCID: PMC8805577 DOI: 10.1002/advs.202102669] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 10/01/2021] [Indexed: 05/12/2023]
Abstract
Lipid metabolism is essential for stemness maintenance, self-renewal, and differentiation of stem cells, however, the regulatory function of cholesterol metabolism in erythroid differentiation is poorly studied. In the present study, a critical role for cholesterol homeostasis in terminal erythropoiesis is uncovered. The master transcriptional factor GATA1 binds to Sterol-regulatory element binding protein 2 (SREBP2) to downregulate cholesterol biosynthesis, leading to a gradual reduction in intracellular cholesterol levels. It is further shown that reduced cholesterol functions to block erythroid proliferation via the cholesterol/mTORC1/ribosome biogenesis axis, which coordinates cell cycle exit in the late stages of erythroid differentiation. The interaction of GATA1 and SREBP2 also provides a feedback loop for regulating globin expression through the transcriptional control of NFE2 by SREBP2. Importantly, it is shown that disrupting intracellular cholesterol hemostasis resulted in defect of terminal erythroid differentiation in vivo. These findings demonstrate that fine-tuning of cholesterol homeostasis emerges as a key mechanism for regulating erythropoiesis.
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Affiliation(s)
- Zhiyuan Lu
- Key Laboratory of Chemical Biology (Ministry of Education)School of Pharmaceutical SciencesCheeloo College of MedicineShandong UniversityJinanShandong250012China
| | - Lixia Huang
- Department of Biochemistry and Molecular BiologySchool of Basic Medical SciencesCheeloo College of MedicineShandong UniversityJinanShandong250012China
| | - Yanxia Li
- Key Laboratory of Chemical Biology (Ministry of Education)School of Pharmaceutical SciencesCheeloo College of MedicineShandong UniversityJinanShandong250012China
| | - Yan Xu
- Key Laboratory of Chemical Biology (Ministry of Education)School of Pharmaceutical SciencesCheeloo College of MedicineShandong UniversityJinanShandong250012China
| | - Ruihao Zhang
- Department of Biochemistry and Molecular BiologySchool of Basic Medical SciencesCheeloo College of MedicineShandong UniversityJinanShandong250012China
| | - Qian Zhou
- Key Laboratory of Chemical Biology (Ministry of Education)School of Pharmaceutical SciencesCheeloo College of MedicineShandong UniversityJinanShandong250012China
| | - Qi Sun
- Department of Biochemistry and Molecular BiologySchool of Basic Medical SciencesCheeloo College of MedicineShandong UniversityJinanShandong250012China
| | - Yi Lu
- Department of Biochemistry and Molecular BiologySchool of Basic Medical SciencesCheeloo College of MedicineShandong UniversityJinanShandong250012China
| | - Junjie Chen
- Analysis and Measurement CenterSchool of Pharmaceutical SciencesXiamen UniversityXiamenFujian361001China
| | - Yuemao Shen
- Key Laboratory of Chemical Biology (Ministry of Education)School of Pharmaceutical SciencesCheeloo College of MedicineShandong UniversityJinanShandong250012China
| | - Jian Li
- Department of Biochemistry and Molecular BiologySchool of Basic Medical SciencesCheeloo College of MedicineShandong UniversityJinanShandong250012China
| | - Baobing Zhao
- Key Laboratory of Chemical Biology (Ministry of Education)School of Pharmaceutical SciencesCheeloo College of MedicineShandong UniversityJinanShandong250012China
- Department of PharmacologySchool of Pharmaceutical SciencesCheeloo College of MedicineShandong UniversityJinanShandong250012China
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18
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Zkscan3 affects erythroblast development by regulating the transcriptional activity of GATA1 and KLF1 in mice. J Mol Histol 2021; 53:423-436. [PMID: 34940950 PMCID: PMC9117376 DOI: 10.1007/s10735-021-10052-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 12/07/2021] [Indexed: 10/28/2022]
Abstract
ZKSCAN3 encodes a zinc-finger transcription factor that regulates the expression of important genes and plays a significant role in tumor development, pathogenesis, and metastasis. However, its biological functions under normal physiological conditions remain largely unknown. In our previous studies, using flow cytometry, we found that the deletion of Zkscan3 may cause abnormal erythropoiesis. In this study, we found that, in a Zkscan3 knockout mice model, the number of splenic early-stage (basophilic-erythroblasts) and late-stage (chromatophilic-erythroblasts to polychromatophilic-erythroblasts through orthochromatophilic-erythroblasts) erythroblasts increased, whereas the number of late erythroblasts in the bone marrow decreased. Moreover, the phenotype was exacerbated after treating mice with phenylhydrazine (PHZ), which causes severe hemolytic anemia. In the knockout mice treated with PHZ, the percentage of reticulocyte in the peripheral blood conspicuously increased, whereas MCHC and red blood cells decreased. Then, we performed RNA-seq and quantitative-polymerase chain reaction assay and found that the expression of GATA1 and Tiam1 in erythroblasts were upregulated, whereas KLF1 was downregulated. Luciferase assays showed that Zkscan3 inhibited the transcription of GATA1 and Tiam1 and promoted the expression of KLF1. Additionally, ChIP and CO-IP results confirmed that Zkscan3 directly interacts with GATA1 and inhibits its transcriptional activity in MEL cells. Our results demonstrate, for the first time, the significant role of Zkscan3 in physiological erythropoiesis through the interaction with GATA1, both at the DNA and protein level, and with Tiam1 and KLF1 at the DNA level.
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19
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Hidalgo D, Bejder J, Pop R, Gellatly K, Hwang Y, Maxwell Scalf S, Eastman AE, Chen JJ, Zhu LJ, Heuberger JAAC, Guo S, Koury MJ, Nordsborg NB, Socolovsky M. EpoR stimulates rapid cycling and larger red cells during mouse and human erythropoiesis. Nat Commun 2021; 12:7334. [PMID: 34921133 PMCID: PMC8683474 DOI: 10.1038/s41467-021-27562-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 11/19/2021] [Indexed: 11/08/2022] Open
Abstract
The erythroid terminal differentiation program couples sequential cell divisions with progressive reductions in cell size. The erythropoietin receptor (EpoR) is essential for erythroblast survival, but its other functions are not well characterized. Here we use Epor-/- mouse erythroblasts endowed with survival signaling to identify novel non-redundant EpoR functions. We find that, paradoxically, EpoR signaling increases red cell size while also increasing the number and speed of erythroblast cell cycles. EpoR-regulation of cell size is independent of established red cell size regulation by iron. High erythropoietin (Epo) increases red cell size in wild-type mice and in human volunteers. The increase in mean corpuscular volume (MCV) outlasts the duration of Epo treatment and is not the result of increased reticulocyte number. Our work shows that EpoR signaling alters the relationship between cycling and cell size. Further, diagnostic interpretations of increased MCV should now include high Epo levels and hypoxic stress.
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Affiliation(s)
- Daniel Hidalgo
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Jacob Bejder
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Ramona Pop
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Chan Medical School, Worcester, MA, USA
- Harvard Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA
| | - Kyle Gellatly
- Program in Bioinformatics and Computational Biology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Yung Hwang
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - S Maxwell Scalf
- Department of Cell Biology and Yale Stem Cell Center, Yale University, New Haven, CT, USA
| | - Anna E Eastman
- Department of Cell Biology and Yale Stem Cell Center, Yale University, New Haven, CT, USA
| | - Jane-Jane Chen
- Institute for Medical Engineering & Science, MIT, Cambridge, MA, USA
| | - Lihua Julie Zhu
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Chan Medical School, Worcester, MA, USA
- Program in Bioinformatics and Computational Biology, University of Massachusetts Chan Medical School, Worcester, MA, USA
- Department of Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | | | - Shangqin Guo
- Department of Cell Biology and Yale Stem Cell Center, Yale University, New Haven, CT, USA
| | - Mark J Koury
- Department of Medicine, Division of Hematology and Oncology, Vanderbilt University Medical Center, Nashville, TN, USA
| | | | - Merav Socolovsky
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Chan Medical School, Worcester, MA, USA.
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20
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Abstract
Myeloproliferative neoplasms (MPNs) are clonal hematopoietic stem cell (HSC) disorders with overproduction of mature myeloid blood cells, including essential thrombocythemia (ET), polycythemia vera (PV), and primary myelofibrosis (PMF). In 2005, several groups identified a single gain-of-function point mutation JAK2V617F in the majority of MPN patients. The JAK2V617F mutation confers cytokine independent proliferation to hematopoietic progenitor cells by constitutively activating canonical and non-canonical downstream pathways. In this chapter, we focus on (1) the regulation of JAK2, (2) the molecular mechanisms used by JAK2V617F to induce MPNs, (3) the factors that are involved in the phenotypic diversity in MPNs, and (4) the effects of JAK2V617F on hematopoietic stem cells (HSCs). The discovery of the JAK2V617F mutation led to a comprehensive understanding of MPN; however, the question still remains about how one mutation can give rise to three distinct disease entities. Various mechanisms have been proposed, including JAK2V617F allele burden, differential STAT signaling, and host genetic modifiers. In vivo modeling of JAK2V617F has dramatically enhanced the understanding of the pathophysiology of the disease and provided the pre-clinical platform. Interestingly, most of these models do not show an increased hematopoietic stem cell self-renewal and function compared to wildtype controls, raising the question of whether JAK2V617F alone is sufficient to give a clonal advantage in MPN patients. In addition, the advent of modern sequencing technologies has led to a broader understanding of the mutational landscape and detailed JAK2V617F clonal architecture in MPN patients.
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21
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RNA-Binding Proteins PCBP1 and PCBP2 Are Critical Determinants of Murine Erythropoiesis. Mol Cell Biol 2021; 41:e0066820. [PMID: 34180713 PMCID: PMC8384066 DOI: 10.1128/mcb.00668-20] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
We previously demonstrated that the two paralogous RNA-binding proteins PCBP1 and PCBP2 are individually essential for mouse development: Pcbp1-null embryos are peri-implantation lethal, while Pcbp2-null embryos lose viability at midgestation. Midgestation Pcbp2-/- embryos revealed a complex phenotype that included loss of certain hematopoietic determinants. Whether PCBP2 directly contributes to erythropoietic differentiation and whether PCBP1 has a role in this process remained undetermined. Here, we selectively inactivated the genes encoding these two RNA-binding proteins during differentiation of the erythroid lineage in the developing mouse embryo. Individual inactivation of either locus failed to impact viability or blood formation. However, combined inactivation of the two loci resulted in midgestational repression of erythroid/hematopoietic gene expression, loss of blood formation, and fetal demise. Orthogonal ex vivo analyses of primary erythroid progenitors selectively depleted of these two RNA-binding proteins revealed that they mediate a combination of overlapping and isoform-specific impacts on hematopoietic lineage transcriptome, impacting both mRNA representation and exon splicing. These data lead us to conclude that PCBP1 and PCBP2 mediate functions critical to differentiation of the erythroid lineage.
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22
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Rondelli CM, Perfetto M, Danoff A, Bergonia H, Gillis S, O'Neill L, Jackson L, Nicolas G, Puy H, West R, Phillips JD, Yien YY. The ubiquitous mitochondrial protein unfoldase CLPX regulates erythroid heme synthesis by control of iron utilization and heme synthesis enzyme activation and turnover. J Biol Chem 2021; 297:100972. [PMID: 34280433 PMCID: PMC8361296 DOI: 10.1016/j.jbc.2021.100972] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 07/13/2021] [Accepted: 07/15/2021] [Indexed: 11/19/2022] Open
Abstract
Heme plays a critical role in catalyzing life-essential redox reactions in all cells, and its synthesis must be tightly balanced with cellular requirements. Heme synthesis in eukaryotes is tightly regulated by the mitochondrial AAA+ unfoldase CLPX (caseinolytic mitochondrial matrix peptidase chaperone subunit X), which promotes heme synthesis by activation of δ-aminolevulinate synthase (ALAS/Hem1) in yeast and regulates turnover of ALAS1 in human cells. However, the specific mechanisms by which CLPX regulates heme synthesis are unclear. In this study, we interrogated the mechanisms by which CLPX regulates heme synthesis in erythroid cells. Quantitation of enzyme activity and protein degradation showed that ALAS2 stability and activity were both increased in the absence of CLPX, suggesting that CLPX primarily regulates ALAS2 by control of its turnover, rather than its activation. However, we also showed that CLPX is required for PPOX (protoporphyrinogen IX oxidase) activity and maintenance of FECH (ferrochelatase) levels, which are the terminal enzymes in heme synthesis, likely accounting for the heme deficiency and porphyrin accumulation observed in Clpx−/− cells. Lastly, CLPX is required for iron utilization for hemoglobin synthesis during erythroid differentiation. Collectively, our data show that the role of CLPX in yeast ALAS/Hem1 activation is not conserved in vertebrates as vertebrates rely on CLPX to regulate ALAS turnover as well as PPOX and FECH activity. Our studies reveal that CLPX mutations may cause anemia and porphyria via dysregulation of ALAS, FECH, and PPOX activities, as well as of iron metabolism.
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Affiliation(s)
- Catherine M Rondelli
- Department of Biological Sciences, University of Delaware, Newark, Delaware, USA
| | - Mark Perfetto
- Department of Biological Sciences, University of Delaware, Newark, Delaware, USA; Pittsburgh Heart, Lung and Blood Vascular Medicine Institute and Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Aidan Danoff
- Department of Biological Sciences, University of Delaware, Newark, Delaware, USA
| | - Hector Bergonia
- Division of Hematology, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Samantha Gillis
- Department of Biological Sciences, University of Delaware, Newark, Delaware, USA
| | - Leah O'Neill
- Department of Biological Sciences, University of Delaware, Newark, Delaware, USA
| | - Laurie Jackson
- Division of Hematology, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Gael Nicolas
- Centre de Recherche sur l'inflammation, Université Paris Diderot, Site Bichat, Sorbonne Paris Cité, Paris, France
| | - Herve Puy
- Centre de Recherche sur l'inflammation, Université Paris Diderot, Site Bichat, Sorbonne Paris Cité, Paris, France; Centre Français des Porphyries, Hôpital Louis Mourier, APHP, Colombes, France
| | - Richard West
- Delaware Biotechnology Institute, University of Delaware, Newark, Delaware, USA
| | - John D Phillips
- Division of Hematology, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Yvette Y Yien
- Department of Biological Sciences, University of Delaware, Newark, Delaware, USA; Pittsburgh Heart, Lung and Blood Vascular Medicine Institute and Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
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23
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Mathangasinghe Y, Fauvet B, Jane SM, Goloubinoff P, Nillegoda NB. The Hsp70 chaperone system: distinct roles in erythrocyte formation and maintenance. Haematologica 2021; 106:1519-1534. [PMID: 33832207 PMCID: PMC8168490 DOI: 10.3324/haematol.2019.233056] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Indexed: 01/14/2023] Open
Abstract
Erythropoiesis is a tightly regulated cell differentiation process in which specialized oxygen- and carbon dioxide-carrying red blood cells are generated in vertebrates. Extensive reorganization and depletion of the erythroblast proteome leading to the deterioration of general cellular protein quality control pathways and rapid hemoglobin biogenesis rates could generate misfolded/aggregated proteins and trigger proteotoxic stresses during erythropoiesis. Such cytotoxic conditions could prevent proper cell differentiation resulting in premature apoptosis of erythroblasts (ineffective erythropoiesis). The heat shock protein 70 (Hsp70) molecular chaperone system supports a plethora of functions that help maintain cellular protein homeostasis (proteostasis) and promote red blood cell differentiation and survival. Recent findings show that abnormalities in the expression, localization and function of the members of this chaperone system are linked to ineffective erythropoiesis in multiple hematological diseases in humans. In this review, we present latest advances in our understanding of the distinct functions of this chaperone system in differentiating erythroblasts and terminally differentiated mature erythrocytes. We present new insights into the protein repair-only function(s) of the Hsp70 system, perhaps to minimize protein degradation in mature erythrocytes to warrant their optimal function and survival in the vasculature under healthy conditions. The work also discusses the modulatory roles of this chaperone system in a wide range of hematological diseases and the therapeutic gain of targeting Hsp70.
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Affiliation(s)
| | - Bruno Fauvet
- Department of Plant Molecular Biology, Lausanne University, Lausanne
| | - Stephen M Jane
- Central Clinical School, Monash University, Prahran, Victoria, Australia; Department of Hematology, Alfred Hospital, Monash University, Prahran, Victoria
| | | | - Nadinath B Nillegoda
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria.
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24
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Otake S, Sasaki T, Shirai T, Tsukiji N, Tamura S, Takano K, Ozaki Y, Suzuki-Inoue K. CLEC-2 stimulates IGF-1 secretion from podoplanin-positive stromal cells and positively regulates erythropoiesis in mice. J Thromb Haemost 2021; 19:1572-1584. [PMID: 33774924 DOI: 10.1111/jth.15317] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 03/03/2021] [Accepted: 03/18/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Erythropoiesis is a complex multistep process by which erythrocytes are produced. C-type lectin-like receptor 2 (CLEC-2) is a podoplanin (PDPN) receptor almost exclusively expressed on the surface of platelets and megakaryocytes. Deletion of megakaryocyte/platelet CLEC-2 was reported to cause anemia along with thrombocytopenia in mice. PDPN-expressing stromal cells in the bone marrow (BM) were also reported to facilitate megakaryocyte expansion and maturation depending on the CLEC-2/PDPN interaction. OBJECTIVES We investigated how specific deletion of CLEC-2 in megakaryocytes/platelets leads to anemia. METHODS We used flow cytometry to analyze maturation of erythroblasts, apoptotic cell death, and cell cycle distribution. CLEC-2 stimulated PDPN-expressing stromal cell-conditioned medium was analyzed by cytokine array and ELISA, and co-cultured with immature erythroblasts. Cytokine levels in serum and BM extracellular fluid were quantified by ELISA. RESULTS We observed increased apoptosis of BM erythroblasts in megakaryocyte/platelet-specific CLEC-2 conditional knockout (Clec1bΔPLT ) mice. Moreover, PDPN-expressing stromal cells in the BM secreted insulin-like growth factor 1 (IGF-1) depending on the CLEC-2/PDPN interaction. Pretreatment with IGF-1 receptor inhibitor increased apoptosis rate and decreased the proliferation of erythroblasts in vitro. Furthermore, in Clec1bΔPLT mice, IGF-1 concentrations in serum and BM extracellular fluid were decreased, and IGF-1 replacement in Clec1bΔPLT mice attenuated anemia. CONCLUSIONS Our findings suggest that IGF-1 secretion from PDPN-expressing stromal cells by CLEC-2 stimulation positively regulates erythroblasts. This novel mechanism of erythropoiesis regulation indicates that a microenvironment consisting of megakaryocytes and PDPN-expressing stromal cells supports erythropoiesis.
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Affiliation(s)
- Shimon Otake
- Department of Clinical Laboratory, University of Yamanashi Hospital, Chuo, Japan
| | - Tomoyuki Sasaki
- Department of Clinical and Laboratory Medicine, Faculty of Medicine, University of Yamanashi, Chuo, Japan
| | - Toshiaki Shirai
- Department of Clinical and Laboratory Medicine, Faculty of Medicine, University of Yamanashi, Chuo, Japan
| | - Nagaharu Tsukiji
- Department of Clinical and Laboratory Medicine, Faculty of Medicine, University of Yamanashi, Chuo, Japan
| | - Shogo Tamura
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Katsuhiro Takano
- Division of Transfusion Medicine and Cell Therapy, University of Yamanashi Hospital, Chuo, Japan
| | | | - Katsue Suzuki-Inoue
- Department of Clinical Laboratory, University of Yamanashi Hospital, Chuo, Japan
- Department of Clinical and Laboratory Medicine, Faculty of Medicine, University of Yamanashi, Chuo, Japan
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25
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Turnis ME, Kaminska E, Smith KH, Kartchner BJ, Vogel P, Laxton JD, Ashmun RA, Ney PA, Opferman JT. Requirement for antiapoptotic MCL-1 during early erythropoiesis. Blood 2021; 137:1945-1958. [PMID: 33512417 PMCID: PMC8033457 DOI: 10.1182/blood.2020006916] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 12/22/2020] [Indexed: 01/24/2023] Open
Abstract
Although BCL-xL is critical to the survival of mature erythrocytes, it is still unclear whether other antiapoptotic molecules mediate survival during earlier stages of erythropoiesis. Here, we demonstrate that erythroid-specific Mcl1 deletion results in embryonic lethality beyond embryonic day 13.5 as a result of severe anemia caused by a lack of mature red blood cells (RBCs). Mcl1-deleted embryos exhibit stunted growth, ischemic necrosis, and decreased RBCs in the blood. Furthermore, we demonstrate that MCL-1 is only required during early definitive erythropoiesis; during later stages, developing erythrocytes become MCL-1 independent and upregulate the expression of BCL-xL. Functionally, MCL-1 relies upon its ability to prevent apoptosis to promote erythroid development because codeletion of the proapoptotic effectors Bax and Bak can overcome the requirement for MCL-1 expression. Furthermore, ectopic expression of human BCL2 in erythroid progenitors can compensate for Mcl1 deletion, indicating redundancy between these 2 antiapoptotic family members. These data clearly demonstrate a requirement for MCL-1 in promoting survival of early erythroid progenitors.
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Affiliation(s)
| | | | | | | | | | - Jonathan D Laxton
- Flow Cytometry and Cell Sorting Shared Resource, St Jude Children's Research Hospital, Memphis, TN; and
| | - Richard A Ashmun
- Flow Cytometry and Cell Sorting Shared Resource, St Jude Children's Research Hospital, Memphis, TN; and
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26
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Mei Y, Liu Y, Ji P. Understanding terminal erythropoiesis: An update on chromatin condensation, enucleation, and reticulocyte maturation. Blood Rev 2021; 46:100740. [PMID: 32798012 DOI: 10.1016/j.blre.2020.100740] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 07/02/2020] [Accepted: 08/05/2020] [Indexed: 12/19/2022]
Abstract
A characteristic feature of terminal erythropoiesis in mammals is extrusion of the highly condensed nucleus out of the cytoplasm. Other vertebrates, including fish, reptiles, amphibians, and birds, undergo nuclear condensation but do not enucleate. Enucleation provides mammals evolutionary advantages by gaining extra space for hemoglobin and being more flexible to migrate through capillaries. Nascent reticulocytes further mature into red blood cells through membrane and proteome remodeling and organelle clearance. Over the past decade, novel molecular mechanisms and signaling pathways have been uncovered that play important roles in chromatin condensation, enucleation, and reticulocyte maturation. These advances not only increase understanding of the physiology of erythropoiesis, but also facilitate efforts in generating in vitro red blood cells for various translational application. In the present review, recent studies in epigenetic modification and release of histones during chromatin condensation are highlighted. New insights in enucleation, including protein sorting, vesicle trafficking, transcriptional regulation, noncoding RNA, cytoskeleton remodeling, erythroblastic islands, and cytokinesis, are summarized. Moreover, organelle clearance and proteolysis mediated by ubiquitin-proteasome degradation during reticulocytes maturation is also examined. Perspectives for future directions in this rapidly evolving research area are also provided.
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Affiliation(s)
- Yang Mei
- Department of Pathology, Northwestern University, Chicago, IL, USA.
| | - Yijie Liu
- Department of Pathology, Northwestern University, Chicago, IL, USA.
| | - Peng Ji
- Department of Pathology, Northwestern University, Chicago, IL, USA.
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27
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GPS2 promotes erythroid differentiation by control of the stability of EKLF protein. Blood 2021; 135:2302-2315. [PMID: 32384137 DOI: 10.1182/blood.2019003867] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 03/05/2020] [Indexed: 02/08/2023] Open
Abstract
Erythropoiesis is a complex multistage process that involves differentiation of early erythroid progenitors to enucleated mature red blood cells, in which lineage-specific transcription factors play essential roles. Erythroid Krüppel-like factor (EKLF/KLF1) is a pleiotropic erythroid transcription factor that is required for the proper maturation of the erythroid cells, whose expression and activation are tightly controlled in a temporal and differentiation stage-specific manner. Here, we uncover a novel role of G-protein pathway suppressor 2 (GPS2), a subunit of the nuclear receptor corepressor/silencing mediator of retinoic acid and thyroid hormone receptor corepressor complex, in erythrocyte differentiation. Our study demonstrates that knockdown of GPS2 significantly suppresses erythroid differentiation of human CD34+ cells cultured in vitro and xenotransplanted in nonobese diabetic/severe combined immunodeficiency/interleukin-2 receptor γ-chain null mice. Moreover, global deletion of GPS2 in mice causes impaired erythropoiesis in the fetal liver and leads to severe anemia. Flow cytometric analysis and Wright-Giemsa staining show a defective differentiation at late stages of erythropoiesis in Gps2-/- embryos. Mechanistically, GPS2 interacts with EKLF and prevents proteasome-mediated degradation of EKLF, thereby increasing EKLF stability and transcriptional activity. Moreover, we identify the amino acids 191-230 region in EKLF protein, responsible for GPS2 binding, that is highly conserved in mammals and essential for EKLF protein stability. Collectively, our study uncovers a previously unknown role of GPS2 as a posttranslational regulator that enhances the stability of EKLF protein and thereby promotes erythroid differentiation.
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28
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You X, Ryu MJ, Cho E, Sang Y, Damnernsawad A, Zhou Y, Liu Y, Zhang J, Lee Y. Embryonic Expression of Nras G 12 D Leads to Embryonic Lethality and Cardiac Defects. Front Cell Dev Biol 2021; 9:633661. [PMID: 33681212 PMCID: PMC7928391 DOI: 10.3389/fcell.2021.633661] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 01/21/2021] [Indexed: 12/14/2022] Open
Abstract
Ras proteins control a complex intracellular signaling network. Gain-of-function mutations in RAS genes lead to RASopathy disorders in humans, including Noonan syndrome (NS). NS is the second most common syndromic cause of congenital heart disease. Although conditional expression of the NrasG12D/+ mutation in adult hematopoietic system is leukemogenic, its effects on embryonic development remain unclear. Here, we report that pan-embryonic expression of endogenous NrasG12D/+ by Mox2-Cre in mice caused embryonic lethality from embryonic day (E) 15.5 and developmental defects predominantly in the heart. At E13.5, NrasG12D/+; Mox2Cre/+ embryos displayed a moderate expansion of hematopoietic stem and progenitor cells without a significant impact on erythroid differentiation in the fetal liver. Importantly, the mutant embryos exhibited cardiac malformations resembling human congenital cardiac defects seen in NS patients, including ventricular septal defects, double outlet right ventricle, the hypertrabeculation/thin myocardium, and pulmonary valve stenosis. The mutant heart showed dysregulation of ERK, BMP, and Wnt pathways, crucial signaling pathways for cardiac development. Endothelial/endocardial-specific expression of NrasG12D/+ caused the cardiac morphological defects and embryonic lethality as observed in NrasG12D/+; Mox2Cre/+ mutants, but myocardial-specific expression of NrasG12D/+ did not. Thus, oncogenic NrasG12D mutation may not be compatible with embryonic survival.
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Affiliation(s)
- Xiaona You
- McArdle Laboratory for Cancer Research, University of Wisconsin-Madison, Madison, WI, United States
| | - Myung-Jeom Ryu
- McArdle Laboratory for Cancer Research, University of Wisconsin-Madison, Madison, WI, United States
| | - Eunjin Cho
- Department of Cell and Regenerative Biology, University of Wisconsin-Madison, Madison, WI, United States
| | - Yanzhi Sang
- McArdle Laboratory for Cancer Research, University of Wisconsin-Madison, Madison, WI, United States
| | - Alisa Damnernsawad
- McArdle Laboratory for Cancer Research, University of Wisconsin-Madison, Madison, WI, United States
| | - Yun Zhou
- McArdle Laboratory for Cancer Research, University of Wisconsin-Madison, Madison, WI, United States
| | - Yangang Liu
- McArdle Laboratory for Cancer Research, University of Wisconsin-Madison, Madison, WI, United States
| | - Jing Zhang
- McArdle Laboratory for Cancer Research, University of Wisconsin-Madison, Madison, WI, United States
| | - Youngsook Lee
- Department of Cell and Regenerative Biology, University of Wisconsin-Madison, Madison, WI, United States
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29
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Huang X, Chao R, Zhang Y, Wang P, Gong X, Liang D, Wang Y. CAP1, a target of miR-144/451, negatively regulates erythroid differentiation and enucleation. J Cell Mol Med 2021; 25:2377-2389. [PMID: 33496386 PMCID: PMC7933962 DOI: 10.1111/jcmm.16067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 10/14/2020] [Accepted: 10/15/2020] [Indexed: 02/06/2023] Open
Abstract
The exact molecular mechanism underlying erythroblast enucleation has been a fundamental biological question for decades. In this study, we found that miR-144/451 critically regulated erythroid differentiation and enucleation. We further identified CAP1, a G-actin-binding protein, as a direct target of miR-144/451 in these processes. During terminal erythropoiesis, CAP1 expression declines along with gradually increased miR-144/451 levels. Enforced CAP1 up-regulation inhibits the formation of contractile actin rings in erythroblasts and prevents their terminal differentiation and enucleation. Our findings reveal a negative regulatory role of CAP1 in miR-144/451-mediated erythropoiesis and thus shed light on how microRNAs fine-tune terminal erythroid development through regulating actin dynamics.
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Affiliation(s)
- Xiaoli Huang
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
| | - Ruihua Chao
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
| | - Yanyang Zhang
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
| | - Pengxiang Wang
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
| | - Xueping Gong
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
| | - Dongli Liang
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
| | - Yuan Wang
- Department of Animal Sciences, College of Agriculture and Natural Resources, Michigan State University, East Lansing, MI, USA
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30
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Magee JA, Signer RAJ. Developmental Stage-Specific Changes in Protein Synthesis Differentially Sensitize Hematopoietic Stem Cells and Erythroid Progenitors to Impaired Ribosome Biogenesis. Stem Cell Reports 2021; 16:20-28. [PMID: 33440178 PMCID: PMC7815942 DOI: 10.1016/j.stemcr.2020.11.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 11/25/2020] [Accepted: 11/26/2020] [Indexed: 12/16/2022] Open
Abstract
Adult hematopoietic stem cell (HSC) self-renewal requires precise control of protein synthesis, but fetal and adult HSCs have distinct self-renewal mechanisms and lineage outputs. This raises the question of whether protein synthesis rates change with age. Here, we show that protein synthesis rates decline during HSC ontogeny, yet erythroid protein synthesis rates increase. A ribosomal mutation that impairs ribosome biogenesis (Rpl24Bst/+) disrupts both fetal and adult HSC self-renewal. However, the Rpl24Bst/+ mutation selectively impairs fetal erythropoiesis at differentiation stages that exhibit fetal-specific attenuation of protein synthesis. Developmental changes in protein synthesis thus differentially sensitize hematopoietic stem and progenitor cells to impaired ribosome biogenesis. Fetal HSCs synthesize much more protein per hour than young adult HSCs in vivo Fetal erythroid progenitors synthesize less protein than adult erythroid progenitors Differences in protein synthesis distinguish fetal and adult erythroid differentiation Rpl24Bst/+ impairs fetal and adult HSCs, but only impairs fetal erythroid progenitors
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Affiliation(s)
- Jeffrey A Magee
- Division of Hematology and Oncology, Department of Pediatrics, and Department of Genetics, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Robert A J Signer
- Division of Regenerative Medicine, Department of Medicine, Moores Cancer Center, University of California San Diego, 3855 Health Sciences Drive, La Jolla, CA 92093-0652, USA.
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Gonzalez-Ibanez AM, Ruiz LM, Jensen E, Echeverria CA, Romero V, Stiles L, Shirihai OS, Elorza AA. Erythroid Differentiation and Heme Biosynthesis Are Dependent on a Shift in the Balance of Mitochondrial Fusion and Fission Dynamics. Front Cell Dev Biol 2020; 8:592035. [PMID: 33330472 PMCID: PMC7719720 DOI: 10.3389/fcell.2020.592035] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 11/02/2020] [Indexed: 12/20/2022] Open
Abstract
Erythropoiesis is the most robust cellular differentiation and proliferation system, with a production of ∼2 × 1011 cells per day. In this fine-tuned process, the hematopoietic stem cells (HSCs) generate erythroid progenitors, which proliferate and mature into erythrocytes. During erythropoiesis, mitochondria are reprogrammed to drive the differentiation process before finally being eliminated by mitophagy. In erythropoiesis, mitochondrial dynamics (MtDy) are expected to be a key regulatory point that has not been described previously. We described that a specific MtDy pattern occurs in human erythropoiesis from EPO-induced human CD34+ cells, characterized predominantly by mitochondrial fusion at early stages followed by fission at late stages. The fusion protein MFN1 and the fission protein FIS1 are shown to play a key role in the progression of erythropoiesis. Fragmentation of the mitochondrial web by the overexpression of FIS1 (gain of fission) resulted in both the inhibition of hemoglobin biosynthesis and the arrest of erythroid differentiation, keeping cells in immature differentiation stages. These cells showed specific mitochondrial features as compared with control cells, such as an increase in round and large mitochondrial morphology, low mitochondrial membrane potential, a drop in the expression of the respiratory complexes II and IV and increased ROS. Interestingly, treatment with the mitochondrial permeability transition pore (mPTP) inhibitor, cyclosporin A, rescued mitochondrial morphology, hemoglobin biosynthesis and erythropoiesis. Studies presented in this work reveal MtDy as a hot spot in the control of erythroid differentiation, which might signal downstream for metabolic reprogramming through regulation of the mPTP.
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Affiliation(s)
- Alvaro M Gonzalez-Ibanez
- Institute of Biomedical Sciences, Faculty of Medicine and Faculty of Life Sciences, Universidad Andres Bello, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
| | - Lina M Ruiz
- Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Santiago, Chile
| | - Erik Jensen
- Institute of Biomedical Sciences, Faculty of Medicine and Faculty of Life Sciences, Universidad Andres Bello, Santiago, Chile
| | | | - Valentina Romero
- Centro de Nanotecnología Aplicada, Facultad de Ciencias, Universidad Mayor, Santiago, Chile
| | - Linsey Stiles
- Department of Medicine, Endocrinology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States.,Metabolism Theme, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States
| | - Orian S Shirihai
- Department of Medicine, Endocrinology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States.,Metabolism Theme, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States
| | - Alvaro A Elorza
- Institute of Biomedical Sciences, Faculty of Medicine and Faculty of Life Sciences, Universidad Andres Bello, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
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32
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Singbrant S, Mattebo A, Sigvardsson M, Strid T, Flygare J. Prospective isolation of radiation induced erythroid stress progenitors reveals unique transcriptomic and epigenetic signatures enabling increased erythroid output. Haematologica 2020; 105:2561-2571. [PMID: 33131245 PMCID: PMC7604643 DOI: 10.3324/haematol.2019.234542] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 01/02/2020] [Indexed: 11/09/2022] Open
Abstract
Massive expansion of erythroid progenitor cells is essential for surviving anemic stress. Research towards understanding this critical process, referred to as stress-erythropoiesis, has been hampered due to lack of specific marker-combinations enabling analysis of the distinct stress-progenitor cells capable of providing radioprotection and enhanced red blood cell production. Here we present a method for precise identification and in vivo validation of progenitor cells contributing to both steady-state and stress-erythropoiesis, enabling for the first time in-depth molecular characterization of these cells. Differential expression of surface markers CD150, CD9 and Sca1 defines a hierarchy of splenic stress-progenitors during irradiation-induced stress recovery in mice, and provides high-purity isolation of the functional stress-BFU-Es with a 100-fold improved enrichment compared to state-of-the-art. By transplanting purified stress-progenitors expressing the fluorescent protein Kusabira Orange, we determined their kinetics in vivo and demonstrated that CD150+CD9+Sca1- stress-BFU-Es provide a massive but transient radioprotective erythroid wave, followed by multi-lineage reconstitution from CD150+CD9+Sca1+ multi-potent stem/progenitor cells. Whole genome transcriptional analysis revealed that stress-BFU-Es express gene signatures more associated with erythropoiesis and proliferation compared to steady-state BFU-Es, and are BMP-responsive. Evaluation of chromatin accessibility through ATAC sequencing reveals enhanced and differential accessibility to binding sites of the chromatin-looping transcription factor CTCF in stress-BFU-Es compared to steady-state BFU-Es. Our findings offer molecular insight to the unique capacity of stress-BFU-Es to rapidly form erythroid cells in response to anemia and constitute an important step towards identifying novel erythropoiesis stimulating agents.
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Affiliation(s)
- Sofie Singbrant
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University
| | - Alexander Mattebo
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University
| | - Mikael Sigvardsson
- Division of Molecular Hematology, Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Tobias Strid
- Division of Molecular Hematology, Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Johan Flygare
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University
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Xu L, Wu F, Yang L, Wang F, Zhang T, Deng X, Zhang X, Yuan X, Yan Y, Li Y, Yang Z, Yu D. miR-144/451 inhibits c-Myc to promote erythroid differentiation. FASEB J 2020; 34:13194-13210. [PMID: 33319407 DOI: 10.1096/fj.202000941r] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 07/01/2020] [Accepted: 07/08/2020] [Indexed: 12/12/2022]
Abstract
Ablation of miR-144/451 disrupts homeostasis of erythropoiesis. Myc, a protooncogenic protein, is essential for erythroblast proliferation but commits rapid downregulation during erythroid maturation. How erythroblasts orchestrate maturation processes through coding and non-coding genes is largely unknown. In this study, we use miR-144/451 knockout mice as in vivo model, G1E, MEL erythroblast lines and erythroblasts from fresh mouse fetal livers as in vitro systems to demonstrate that targeted depletion of miR-144/451 blocks erythroid nuclear condensation and enucleation. This is due, at least in part, to the continued high expression of Myc in erythroblasts when miR-144/451 is absent. Specifically, miR-144/451 directly inhibits Myc in erythroblasts. Loss of miR-144/451 locus derepresses, and thus, increases the expression of Myc. Sustained high levels of Myc in miR-144/451-depleted erythroblasts blocks erythroid differentiation. Moreover, Myc reversely regulates the expression of miR-144/451, forming a positive miR-144/451-Myc feedback to ensure the complete shutoff of Myc during erythropoiesis. Given that erythroid-specific transcription factor GATA1 activates miR-144/451 and inactivates Myc, our findings indicate that GATA1-miR-144/451-Myc network safeguards normal erythroid differentiation. Our findings also demonstrate that disruption of the miR-144/451-Myc crosstalk causes anemia, suggesting that miR-144/451 might be a potential therapeutic target in red cell diseases.
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Affiliation(s)
- Lei Xu
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, China.,Jiangsu Key Laboratory of Experimental & Translational Non-coding RNA Research, Yangzhou University, Yangzhou, China.,Central Laboratory, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Fan Wu
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, China.,Jiangsu Key Laboratory of Experimental & Translational Non-coding RNA Research, Yangzhou University, Yangzhou, China
| | - Lei Yang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, China.,Jiangsu Key Laboratory of Experimental & Translational Non-coding RNA Research, Yangzhou University, Yangzhou, China
| | - Fangfang Wang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, China.,Jiangsu Key Laboratory of Experimental & Translational Non-coding RNA Research, Yangzhou University, Yangzhou, China
| | - Tong Zhang
- Xinghua People's Hospital, Yangzhou University, Xinghua, China
| | - Xintao Deng
- Xinghua People's Hospital, Yangzhou University, Xinghua, China
| | - Xiumei Zhang
- Xinghua People's Hospital, Yangzhou University, Xinghua, China
| | - Xiaoling Yuan
- Yangzhou Maternal and Child Care Service Center, Yangzhou University, Yangzhou, China
| | - Ying Yan
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, China.,Jiangsu Key Laboratory of Experimental & Translational Non-coding RNA Research, Yangzhou University, Yangzhou, China
| | - Yaoyao Li
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, China.,Jiangsu Key Laboratory of Experimental & Translational Non-coding RNA Research, Yangzhou University, Yangzhou, China.,Central Laboratory, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Zhangping Yang
- Department of Animal Science & Technology, Yangzhou University College of Animal Science and Technology, Yangzhou, China
| | - Duonan Yu
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, China.,Jiangsu Key Laboratory of Experimental & Translational Non-coding RNA Research, Yangzhou University, Yangzhou, China.,Central Laboratory, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China.,Xinghua People's Hospital, Yangzhou University, Xinghua, China
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34
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Cendrowski J, Kaczmarek M, Mazur M, Kuzmicz-Kowalska K, Jastrzebski K, Brewinska-Olchowik M, Kominek A, Piwocka K, Miaczynska M. Splicing variation of BMP2K balances abundance of COPII assemblies and autophagic degradation in erythroid cells. eLife 2020; 9:58504. [PMID: 32795391 PMCID: PMC7473771 DOI: 10.7554/elife.58504] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 08/13/2020] [Indexed: 12/26/2022] Open
Abstract
Intracellular transport undergoes remodeling upon cell differentiation, which involves cell type-specific regulators. Bone morphogenetic protein 2-inducible kinase (BMP2K) has been potentially implicated in endocytosis and cell differentiation but its molecular functions remained unknown. We discovered that its longer (L) and shorter (S) splicing variants regulate erythroid differentiation in a manner unexplainable by their involvement in AP-2 adaptor phosphorylation and endocytosis. However, both variants interact with SEC16A and could localize to the juxtanuclear secretory compartment. Variant-specific depletion approach showed that BMP2K isoforms constitute a BMP2K-L/S regulatory system that controls the distribution of SEC16A and SEC24B as well as SEC31A abundance at COPII assemblies. Finally, we found L to promote and S to restrict autophagic degradation and erythroid differentiation. Hence, we propose that BMP2K-L and BMP2K-S differentially regulate abundance and distribution of COPII assemblies as well as autophagy, possibly thereby fine-tuning erythroid differentiation.
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Affiliation(s)
- Jaroslaw Cendrowski
- Laboratory of Cell Biology, International Institute of Molecular and Cell Biology, Warsaw, Poland
| | - Marta Kaczmarek
- Laboratory of Cell Biology, International Institute of Molecular and Cell Biology, Warsaw, Poland
| | - Michał Mazur
- Laboratory of Cell Biology, International Institute of Molecular and Cell Biology, Warsaw, Poland
| | | | - Kamil Jastrzebski
- Laboratory of Cell Biology, International Institute of Molecular and Cell Biology, Warsaw, Poland
| | | | - Agata Kominek
- Laboratory of Cytometry, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Katarzyna Piwocka
- Laboratory of Cytometry, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Marta Miaczynska
- Laboratory of Cell Biology, International Institute of Molecular and Cell Biology, Warsaw, Poland
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Diaphanous-related formin mDia2 regulates beta2 integrins to control hematopoietic stem and progenitor cell engraftment. Nat Commun 2020; 11:3172. [PMID: 32576838 PMCID: PMC7311390 DOI: 10.1038/s41467-020-16911-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 06/02/2020] [Indexed: 12/27/2022] Open
Abstract
Bone marrow engraftment of the hematopoietic stem and progenitor cells (HSPCs) involves homing to the vasculatures and lodgment to their niches. How HSPCs transmigrate from the vasculature to the niches is unclear. Here, we show that loss of diaphanous-related formin mDia2 leads to impaired engraftment of long-term hematopoietic stem cells and loss of competitive HSPC repopulation. These defects are likely due to the compromised trans-endothelial migration of HSPCs since their homing to the bone marrow vasculatures remained intact. Mechanistically, loss of mDia2 disrupts HSPC polarization and induced cytoplasmic accumulation of MAL, which deregulates the activity of serum response factor (SRF). We further reveal that beta2 integrins are transcriptional targets of SRF. Knockout of beta2 integrins in HSPCs phenocopies mDia2 deficient mice. Overexpression of SRF or beta2 integrins rescues HSPC engraftment defects associated with mDia2 deficiency. Our findings show that mDia2-SRF-beta2 integrin signaling is critical for HSPC lodgment to the niches. Bone marrow engraftment of haematopoietic stem and progenitor cells (HSPCs) requires homing and lodgement to the niche. Here, the authors show that mDia2 is required for HSPC polarization, nuclear MAL, and SRF-induced beta2 integrin expression during transendothelial migration of HSPCs required for engraftment.
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36
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Siva K, Ek F, Chen J, Ghani Alattar A, Sigmundsson K, Olsson R, Wlodarski M, Lundbäck T, Flygare J. A Phenotypic Screening Assay Identifies Modulators of Diamond Blackfan Anemia. SLAS DISCOVERY 2020; 24:304-313. [PMID: 30784369 DOI: 10.1177/2472555218823531] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Diamond-Blackfan anemia (DBA) is a bone marrow failure syndrome caused by mutations in ribosomal protein genes. Pathogenic mechanisms are poorly understood but involve severely reduced proliferation of erythroid precursors. Because current DBA therapies are ineffective and associated with severe side effects, disease-specific therapies are urgently needed. We hypothesized that druggable molecular pathways underlying the defect can be revealed through phenotypic small-molecule screens. Accordingly, a screening assay was developed using c-kit+ fetal liver erythroid progenitors from a doxycycline-inducible DBA mouse model. The addition of doxycycline to the culture medium induces the phenotype and reduces proliferation to <10% of normal, such that rescue of proliferation can be used as a simple readout for screening. Here, we describe the assay rationale and efforts toward validation of a microtiter plate-compatible assay and its application in a pilot screen of 3871 annotated compounds. Ten hits demonstrated concentration-dependent activity, and we report a brief follow-up of one of these compounds. In conclusion, we established a robust scalable assay for screening molecules that rescue erythropoiesis in DBA.
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Affiliation(s)
- Kavitha Siva
- 1 Department of Molecular Medicine and Gene Therapy, Lund Strategic Center for Stem Cell Biology, Lund University, Lund, Sweden
| | - Fredrik Ek
- 2 Chemical Biology and Therapeutics group, Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Jun Chen
- 1 Department of Molecular Medicine and Gene Therapy, Lund Strategic Center for Stem Cell Biology, Lund University, Lund, Sweden
| | - Abdul Ghani Alattar
- 1 Department of Molecular Medicine and Gene Therapy, Lund Strategic Center for Stem Cell Biology, Lund University, Lund, Sweden
| | - Kristmundur Sigmundsson
- 3 Chemical Biology Consortium Sweden (CBCS), Science for Life Laboratory, Department for Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Solna, Sweden
| | - Roger Olsson
- 2 Chemical Biology and Therapeutics group, Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Marcin Wlodarski
- 4 Division of Pediatric Hematology and Oncology, Faculty of Medicine University Hospital Freiburg, Germany
| | - Thomas Lundbäck
- 3 Chemical Biology Consortium Sweden (CBCS), Science for Life Laboratory, Department for Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Solna, Sweden.,5 Mechanistic Biology & Profiling, Discovery Sciences, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Johan Flygare
- 1 Department of Molecular Medicine and Gene Therapy, Lund Strategic Center for Stem Cell Biology, Lund University, Lund, Sweden
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37
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Sibon D, Coman T, Rossignol J, Lamarque M, Kosmider O, Bayard E, Fouquet G, Rignault R, Topçu S, Bonneau P, Bernex F, Dussiot M, Deroy K, Laurent L, Callebert J, Launay JM, Georgin-Lavialle S, Courtois G, Maroteaux L, Vaillancourt C, Fontenay M, Hermine O, Côté F. Enhanced Renewal of Erythroid Progenitors in Myelodysplastic Anemia by Peripheral Serotonin. Cell Rep 2020; 26:3246-3256.e4. [PMID: 30893598 DOI: 10.1016/j.celrep.2019.02.071] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 12/30/2018] [Accepted: 02/20/2019] [Indexed: 10/27/2022] Open
Abstract
Tryptophan as the precursor of several active compounds, including kynurenine and serotonin, is critical for numerous important metabolic functions. Enhanced tryptophan metabolism toward the kynurenine pathway has been associated with myelodysplastic syndromes (MDSs), which are preleukemic clonal diseases characterized by dysplastic bone marrow and cytopenias. Here, we reveal a fundamental role for tryptophan metabolized along the serotonin pathway in normal erythropoiesis and in the physiopathology of MDS-related anemia. We identify, both in human and murine erythroid progenitors, a functional cell-autonomous serotonergic network with pro-survival and proliferative functions. In vivo studies demonstrate that pharmacological increase of serotonin levels using fluoxetine, a common antidepressant, has the potential to become an important therapeutic strategy in low-risk MDS anemia refractory to erythropoietin.
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Affiliation(s)
- David Sibon
- Institut Imagine, INSERM U1163, CNRS ERL 8254, Université Paris Descartes, Sorbonne Paris-Cité, Laboratoire d'Excellence GR-Ex, Paris, France
| | - Tereza Coman
- Institut Imagine, INSERM U1163, CNRS ERL 8254, Université Paris Descartes, Sorbonne Paris-Cité, Laboratoire d'Excellence GR-Ex, Paris, France; Département d'Hématologie, Gustave Roussy Cancer Campus Grand Paris, 94800 Villejuif, France
| | - Julien Rossignol
- Institut Imagine, INSERM U1163, CNRS ERL 8254, Université Paris Descartes, Sorbonne Paris-Cité, Laboratoire d'Excellence GR-Ex, Paris, France; Département d'Hématologie, Gustave Roussy Cancer Campus Grand Paris, 94800 Villejuif, France
| | - Mathilde Lamarque
- Institut Imagine, INSERM U1163, CNRS ERL 8254, Université Paris Descartes, Sorbonne Paris-Cité, Laboratoire d'Excellence GR-Ex, Paris, France
| | - Olivier Kosmider
- Institut Cochin, INSERM U1016, CNRS UMR 8104, Université Paris Descartes, Paris, APHP, Service d'Hématologie Biologique, Hôpitaux Universitaires Paris Centre-Cochin, Paris 75014, France
| | - Elisa Bayard
- Institut Imagine, INSERM U1163, CNRS ERL 8254, Université Paris Descartes, Sorbonne Paris-Cité, Laboratoire d'Excellence GR-Ex, Paris, France
| | - Guillemette Fouquet
- Institut Imagine, INSERM U1163, CNRS ERL 8254, Université Paris Descartes, Sorbonne Paris-Cité, Laboratoire d'Excellence GR-Ex, Paris, France
| | - Rachel Rignault
- Institut Imagine, INSERM U1163, CNRS ERL 8254, Université Paris Descartes, Sorbonne Paris-Cité, Laboratoire d'Excellence GR-Ex, Paris, France
| | - Selin Topçu
- Institut Imagine, INSERM U1163, CNRS ERL 8254, Université Paris Descartes, Sorbonne Paris-Cité, Laboratoire d'Excellence GR-Ex, Paris, France
| | - Pierre Bonneau
- Institut Imagine, INSERM U1163, CNRS ERL 8254, Université Paris Descartes, Sorbonne Paris-Cité, Laboratoire d'Excellence GR-Ex, Paris, France
| | - Florence Bernex
- Institut de Recherche en Cancérologie de Montpellier, Montpellier 34298, France; INSERM, U1194, Network of Experimental Histology, BioCampus, CNRS, UMS3426, Montpellier 34094, France
| | - Michael Dussiot
- Institut Imagine, INSERM U1163, CNRS ERL 8254, Université Paris Descartes, Sorbonne Paris-Cité, Laboratoire d'Excellence GR-Ex, Paris, France
| | - Kathy Deroy
- INRS-Institut Armand-Frappier and Center for Interdisciplinary Research on Well-Being, Health, Society and Environment, Montreal, QC H7V 1B7, Canada
| | - Laetitia Laurent
- INRS-Institut Armand-Frappier and Center for Interdisciplinary Research on Well-Being, Health, Society and Environment, Montreal, QC H7V 1B7, Canada
| | - Jacques Callebert
- Service de Biochimie, INSERM U942, Hôpital Lariboisière, 75010 Paris, France
| | - Jean-Marie Launay
- Service de Biochimie, INSERM U942, Hôpital Lariboisière, 75010 Paris, France
| | - Sophie Georgin-Lavialle
- Département de Médecine Interne, Hôpital Tenon, Université Pierre et Marie Curie, AP-HP, 4 rue de la Chine, 75020 Paris, France
| | - Geneviève Courtois
- Institut Imagine, INSERM U1163, CNRS ERL 8254, Université Paris Descartes, Sorbonne Paris-Cité, Laboratoire d'Excellence GR-Ex, Paris, France
| | - Luc Maroteaux
- INSERM UMR-S1270, Sorbonne Universités, Université Pierre et Marie Curie, Institut du Fer à Moulin, 75005 Paris, France
| | - Cathy Vaillancourt
- INRS-Institut Armand-Frappier and Center for Interdisciplinary Research on Well-Being, Health, Society and Environment, Montreal, QC H7V 1B7, Canada
| | - Michaela Fontenay
- Institut Cochin, INSERM U1016, CNRS UMR 8104, Université Paris Descartes, Paris, APHP, Service d'Hématologie Biologique, Hôpitaux Universitaires Paris Centre-Cochin, Paris 75014, France
| | - Olivier Hermine
- Institut Imagine, INSERM U1163, CNRS ERL 8254, Université Paris Descartes, Sorbonne Paris-Cité, Laboratoire d'Excellence GR-Ex, Paris, France; Department of Hematology, Hôpital Necker AP-HP, 75015 Paris, France
| | - Francine Côté
- Institut Imagine, INSERM U1163, CNRS ERL 8254, Université Paris Descartes, Sorbonne Paris-Cité, Laboratoire d'Excellence GR-Ex, Paris, France.
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Stress Erythropoiesis is a Key Inflammatory Response. Cells 2020; 9:cells9030634. [PMID: 32155728 PMCID: PMC7140438 DOI: 10.3390/cells9030634] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 02/27/2020] [Accepted: 03/03/2020] [Indexed: 12/21/2022] Open
Abstract
Bone marrow medullary erythropoiesis is primarily homeostatic. It produces new erythrocytes at a constant rate, which is balanced by the turnover of senescent erythrocytes by macrophages in the spleen. Despite the enormous capacity of the bone marrow to produce erythrocytes, there are times when it is unable to keep pace with erythroid demand. At these times stress erythropoiesis predominates. Stress erythropoiesis generates a large bolus of new erythrocytes to maintain homeostasis until steady state erythropoiesis can resume. In this review, we outline the mechanistic differences between stress erythropoiesis and steady state erythropoiesis and show that their responses to inflammation are complementary. We propose a new hypothesis that stress erythropoiesis is induced by inflammation and plays a key role in maintaining erythroid homeostasis during inflammatory responses.
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39
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Chromatin occupancy and epigenetic analysis reveal new insights into the function of the GATA1 N terminus in erythropoiesis. Blood 2020; 134:1619-1631. [PMID: 31409672 DOI: 10.1182/blood.2019001234] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 08/05/2019] [Indexed: 12/13/2022] Open
Abstract
Mutations in GATA1, which lead to expression of the GATA1s isoform that lacks the GATA1 N terminus, are seen in patients with Diamond-Blackfan anemia (DBA). In our efforts to better understand the connection between GATA1s and DBA, we comprehensively studied erythropoiesis in Gata1s mice. Defects in yolks sac and fetal liver hematopoiesis included impaired terminal maturation and reduced numbers of erythroid progenitors. RNA-sequencing revealed that both erythroid and megakaryocytic gene expression patterns were altered by the loss of the N terminus, including aberrant upregulation of Gata2 and Runx1. Dysregulation of global H3K27 methylation was found in the erythroid progenitors upon loss of N terminus of GATA1. Chromatin-binding assays revealed that, despite similar occupancy of GATA1 and GATA1s, there was a striking reduction of H3K27me3 at regulatory elements of the Gata2 and Runx1 genes. Consistent with the observation that overexpression of GATA2 has been reported to impair erythropoiesis, we found that haploinsufficiency of Gata2 rescued the erythroid defects of Gata1s fetuses. Together, our integrated genomic analysis of transcriptomic and epigenetic signatures reveals that, Gata1 mice provide novel insights into the role of the N terminus of GATA1 in transcriptional regulation and red blood cell maturation which may potentially be useful for DBA patients.
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40
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Zhang J, Liu Y, Han X, Mei Y, Yang J, Zhang ZJ, Lu X, Ji P. Rats provide a superior model of human stress erythropoiesis. Exp Hematol 2019; 78:21-34.e3. [PMID: 31562902 DOI: 10.1016/j.exphem.2019.09.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 08/28/2019] [Accepted: 09/16/2019] [Indexed: 11/15/2022]
Abstract
Mouse models are widely used to study human erythropoiesis in vivo. One important caveat using mouse models is that mice often develop significant extramedullary erythropoiesis with anemia, which could mask important phenotypes. To overcome this drawback in mice, here we established in vitro and in vivo rat models for the studies of stress erythropoiesis. Using flow cytometry-based assays, we can monitor terminal erythropoiesis in rats during fetal and adult erythropoiesis under steady state and stress conditions. We used this system to test rat erythropoiesis under phenylhydrazine (PHZ)-induced hemolytic stress. In contrast to mice, rats did not have an increased proportion of early-stage erythroid precursors during terminal differentiation in the spleen or bone marrow. This could be explained by the abundant bone marrow spaces in rats that allow sufficient erythroid proliferation under stress. Consistently, the extent of splenomegaly in rats after PHZ treatment was significantly lower than that in mice. The level of BMP4, which was significantly increased in mouse spleen after PHZ treatment, remained unchanged in rat spleen. We further demonstrated that the bone marrow c-Kit positive progenitor population underwent a phenotype shift and became more CD71 positive and erythroid skewed with the expression of maturing erythroid markers under stress in rats and humans. In contrast, the phenotype shift to an erythroid-skewed progenitor population in mice occurred mainly in the spleen. Our study establishes rat in vitro and in vivo erythropoiesis models that are more appropriate and superior for the study of human stress erythropoiesis than mouse models.
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Affiliation(s)
- Jingxin Zhang
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL; School of Life Science, Zhengzhou University, Zhengzhou, Henan, China
| | - Yijie Liu
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Xu Han
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Yang Mei
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Jing Yang
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Zheng J Zhang
- Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Xinyan Lu
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Peng Ji
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL.
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41
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Caulier A, Jankovsky N, Demont Y, Ouled-Haddou H, Demagny J, Guitton C, Merlusca L, Lebon D, Vong P, Aubry A, Lahary A, Rose C, Gréaume S, Cardon E, Platon J, Ouadid-Ahidouch H, Rochette J, Marolleau JP, Picard V, Garçon L. PIEZO1 activation delays erythroid differentiation of normal and hereditary xerocytosis-derived human progenitor cells. Haematologica 2019; 105:610-622. [PMID: 31413092 PMCID: PMC7049340 DOI: 10.3324/haematol.2019.218503] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 08/09/2019] [Indexed: 12/21/2022] Open
Abstract
Hereditary xerocytosis is a dominantly inherited red cell membrane disorder caused in most cases by gain-of-function mutations in PIEZO1, encoding a mechanosensitive ion channel that translates a mechanic stimulus into calcium influx. We found that PIEZO1 was expressed early in erythroid progenitor cells, and investigated whether it could be involved in erythropoiesis, besides having a role in the homeostasis of mature red cell hydration. In UT7 cells, chemical PIEZO1 activation using YODA1 repressed glycophorin A expression by 75%. This effect was PIEZO1-dependent since it was reverted using specific short hairpin-RNA knockdown. The effect of PIEZO1 activation was confirmed in human primary progenitor cells, maintaining cells at an immature stage for longer and modifying the transcriptional balance in favor of genes associated with early erythropoiesis, as shown by a high GATA2/GATA1 ratio and decreased α/β-globin expression. The cell proliferation rate was also reduced, with accumulation of cells in G0/G1 of the cell cycle. The PIEZO1-mediated effect on UT7 cells required calcium-dependent activation of the NFAT and ERK1/2 pathways. In primary erythroid cells, PIEZO1 activation synergized with erythropoietin to activate STAT5 and ERK, indicating that it may modulate signaling pathways downstream of erythropoietin receptor activation. Finally, we studied the in-vitro erythroid differentiation of primary cells obtained from 14 PIEZO1-mutated patients, from 11 families, carrying ten different mutations. We observed a delay in erythroid differentiation in all cases, ranging from mild (n=3) to marked (n=8). Overall, these data demonstrate a role for PIEZO1 during erythropoiesis, since activation of PIEZO1 - both chemically and through activating mutations - delays erythroid maturation, providing new insights into the pathophysiology of hereditary xerocytosis.
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Affiliation(s)
- Alexis Caulier
- EA4666 HEMATIM, Université Picardie Jules Verne, Amiens.,Service des Maladies du Sang, CHU Amiens, Amiens
| | | | | | | | | | - Corinne Guitton
- Service de Pédiatrie Générale, CHU Bicêtre, AP-HP, Le Kremlin-Bicêtre
| | | | - Delphine Lebon
- EA4666 HEMATIM, Université Picardie Jules Verne, Amiens.,Service des Maladies du Sang, CHU Amiens, Amiens
| | - Pascal Vong
- EA4666 HEMATIM, Université Picardie Jules Verne, Amiens
| | | | | | - Christian Rose
- Service d'Oncologie et d'Hématologie, Hôpital Saint Vincent de Paul, Lille
| | - Sandrine Gréaume
- Etablissement Français du Sang (EFS) de Normandie, Bois-Guillaume
| | - Emilie Cardon
- EA4666 HEMATIM, Université Picardie Jules Verne, Amiens
| | | | - Halima Ouadid-Ahidouch
- EA4667 Laboratoire de Physiologie Cellulaire et Moléculaire, Université Picardie Jules Verne, Amiens
| | - Jacques Rochette
- EA4666 HEMATIM, Université Picardie Jules Verne, Amiens.,Laboratoire de Génétique Moléculaire, CHU Amiens, Amiens
| | - Jean-Pierre Marolleau
- EA4666 HEMATIM, Université Picardie Jules Verne, Amiens.,Service des Maladies du Sang, CHU Amiens, Amiens
| | | | - Loïc Garçon
- EA4666 HEMATIM, Université Picardie Jules Verne, Amiens .,Service d'Hématologie Biologique, CHU Amiens.,Laboratoire de Génétique Moléculaire, CHU Amiens, Amiens
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42
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Mayers S, Moço PD, Maqbool T, Silva PN, Kilkenny DM, Audet J. Establishment of an erythroid progenitor cell line capable of enucleation achieved with an inducible c-Myc vector. BMC Biotechnol 2019; 19:21. [PMID: 30987611 PMCID: PMC6466758 DOI: 10.1186/s12896-019-0515-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Accepted: 04/05/2019] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND A robust scalable method for producing enucleated red blood cells (RBCs) is not only a process to produce packed RBC units for transfusion but a potential platform to produce modified RBCs with applications in advanced cellular therapy. Current strategies for producing RBCs have shortcomings in the limited self-renewal capacity of progenitor cells, or difficulties in effectively enucleating erythroid cell lines. We explored a new method to produce RBCs by inducibly expressing c-Myc in primary erythroid progenitor cells and evaluated the proliferative and maturation potential of these modified cells. RESULTS Primary erythroid progenitor cells were genetically modified with an inducible gene transfer vector expressing a single transcription factor, c-Myc, and all the gene elements required to achieve dox-inducible expression. Genetically modified cells had enhanced proliferative potential compared to control cells, resulting in exponential growth for at least 6 weeks. Inducibly proliferating erythroid (IPE) cells were isolated with surface receptors similar to colony forming unit-erythroid (CFU-Es), and after removal of ectopic c-Myc expression cells hemoglobinized, decreased in cell size to that of native RBCs, and enucleated achieving cultures with 17% enucleated cells. Experiments with IPE cells at various levels of ectopic c-Myc expression provided insight into differentiation dynamics of the modified cells, and an optimized two-stage differentiation strategy was shown to promote greater expansion and maturation. CONCLUSIONS Genetic engineering of adult erythroid progenitor cells with an inducible c-Myc vector established an erythroid progenitor cell line that could produce RBCs, demonstrating the potential of this approach to produce large quantities of RBCs and modified RBC products.
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Affiliation(s)
- Steven Mayers
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Canada.,Institute of Biomaterials and Biomedical Engineering (IBBME), University of Toronto, Toronto, Canada
| | - Pablo Diego Moço
- Institute of Biomaterials and Biomedical Engineering (IBBME), University of Toronto, Toronto, Canada
| | - Talha Maqbool
- Institute of Biomaterials and Biomedical Engineering (IBBME), University of Toronto, Toronto, Canada
| | - Pamuditha N Silva
- Institute of Biomaterials and Biomedical Engineering (IBBME), University of Toronto, Toronto, Canada
| | - Dawn M Kilkenny
- Institute of Biomaterials and Biomedical Engineering (IBBME), University of Toronto, Toronto, Canada
| | - Julie Audet
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Canada. .,Institute of Biomaterials and Biomedical Engineering (IBBME), University of Toronto, Toronto, Canada.
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43
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Sainz de Aja J, Menchero S, Rollan I, Barral A, Tiana M, Jawaid W, Cossio I, Alvarez A, Carreño‐Tarragona G, Badia‐Careaga C, Nichols J, Göttgens B, Isern J, Manzanares M. The pluripotency factor NANOG controls primitive hematopoiesis and directly regulates Tal1. EMBO J 2019; 38:embj.201899122. [PMID: 30814124 PMCID: PMC6443201 DOI: 10.15252/embj.201899122] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 01/24/2019] [Accepted: 01/25/2019] [Indexed: 02/02/2023] Open
Abstract
Progenitors of the first hematopoietic cells in the mouse arise in the early embryo from Brachyury-positive multipotent cells in the posterior-proximal region of the epiblast, but the mechanisms that specify primitive blood cells are still largely unknown. Pluripotency factors maintain uncommitted cells of the blastocyst and embryonic stem cells in the pluripotent state. However, little is known about the role played by these factors during later development, despite being expressed in the postimplantation epiblast. Using a dual transgene system for controlled expression at postimplantation stages, we found that Nanog blocks primitive hematopoiesis in the gastrulating embryo, resulting in a loss of red blood cells and downregulation of erythropoietic genes. Accordingly, Nanog-deficient embryonic stem cells are prone to erythropoietic differentiation. Moreover, Nanog expression in adults prevents the maturation of erythroid cells. By analysis of previous data for NANOG binding during stem cell differentiation and CRISPR/Cas9 genome editing, we found that Tal1 is a direct NANOG target. Our results show that Nanog regulates primitive hematopoiesis by directly repressing critical erythroid lineage specifiers.
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Affiliation(s)
- Julio Sainz de Aja
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC)MadridSpain
| | - Sergio Menchero
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC)MadridSpain
| | - Isabel Rollan
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC)MadridSpain
| | - Antonio Barral
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC)MadridSpain
| | - Maria Tiana
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC)MadridSpain
| | - Wajid Jawaid
- Wellcome‐Medical Research Council Cambridge Stem Cell InstituteCambridgeUK,Department of HaematologyCambridge Institute for Medical ResearchUniversity of CambridgeCambridgeUK
| | - Itziar Cossio
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC)MadridSpain
| | - Alba Alvarez
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC)MadridSpain
| | - Gonzalo Carreño‐Tarragona
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC)MadridSpain,Department of HaematologyHospital 12 de OctubreMadridSpain
| | | | - Jennifer Nichols
- Wellcome‐Medical Research Council Cambridge Stem Cell InstituteCambridgeUK,Department of PhysiologyDevelopment and NeuroscienceUniversity of CambridgeCambridgeUK
| | - Berthold Göttgens
- Wellcome‐Medical Research Council Cambridge Stem Cell InstituteCambridgeUK,Department of HaematologyCambridge Institute for Medical ResearchUniversity of CambridgeCambridgeUK
| | - Joan Isern
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC)MadridSpain,Department of Experimental & Health SciencesUniversity Pompeu Fabra (UPF)BarcelonaSpain
| | - Miguel Manzanares
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
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44
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Activation of the vitamin D receptor transcription factor stimulates the growth of definitive erythroid progenitors. Blood Adv 2019; 2:1207-1219. [PMID: 29844206 DOI: 10.1182/bloodadvances.2018017533] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 04/15/2018] [Indexed: 12/30/2022] Open
Abstract
The pathways that regulate the growth of erythroid progenitors are incompletely understood. In a computational analysis of gene expression changes during erythroid ontogeny, the vitamin D receptor (Vdr) nuclear hormone receptor transcription factor gene was identified in fetal and adult stages, but not at the embryonic stage of development. Vdr was expressed in definitive erythroid (EryD) progenitors and was downregulated during their maturation. Activation of Vdr signaling by the vitamin D3 agonist calcitriol increased the outgrowth of EryD colonies from fetal liver and adult bone marrow, maintained progenitor potential, and delayed erythroid maturation, as revealed by clonogenic assays, suspension culture, cell surface phenotype, and gene expression analyses. The early (cKit+CD71lo/neg), but not the late (cKit+CD71hi), EryD progenitor subset of LinnegcKit+ cells was responsive to calcitriol. Culture of cKit+CD71lo/neg progenitors in the presence of both vitamin D3 and glucocorticoid receptor ligands resulted in an increase in proliferation that was at least additive compared with either ligand alone. Lentivirus shRNA-mediated knockdown of Vdr expression abrogated the stimulation of early erythroid progenitor growth by calcitriol. These findings suggest that Vdr has a cell-intrinsic function in early erythroid progenitors. Targeting of downstream components of the Vdr signaling pathway may lead to new approaches for the expansion of erythroid progenitors ex vivo.
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45
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Yang F, Huang Y, Chen X, Liu L, Liao D, Zhang H, Huang G, Liu W, Zhu X, Wang W, Lobo CA, Yazdanbakhsh K, An X, Ju Z. Deletion of a flippase subunit Tmem30a in hematopoietic cells impairs mouse fetal liver erythropoiesis. Haematologica 2019; 104:1984-1994. [PMID: 30819915 PMCID: PMC6886424 DOI: 10.3324/haematol.2018.203992] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 02/27/2019] [Indexed: 01/01/2023] Open
Abstract
Transmembrane protein 30A (Tmem30a) is the β-subunit of P4-ATPases which function as flippase that transports aminophospholipids such as phosphatidylserine from the outer to the inner leaflets of the plasma membrane to maintain asymmetric distribution of phospholipids. It has been documented that deficiency of Tmem30a led to exposure of phosphatidylserine. However, the role of Tmem30a in vivo remains largely unknown. Here we found that Vav-Cre-driven conditional deletion of Tmem30a in hematopoietic cells led to embryonic lethality due to severe anemia by embryonic day 16.5. The numbers of erythroid colonies and erythroid cells were decreased in the Tmem30a deficient fetal liver. This was accompanied by increased apoptosis of erythroid cells. Confocal microscopy analysis revealed an increase of localization of erythropoietin receptor to areas of membrane raft microdomains in response to erythropoietin stimulation in Ter119−erythroid progenitors, which was impaired in Tmem30a deficient cells. Moreover, erythropoietin receptor (EPOR)-mediated activation of the STAT5 pathway was significantly reduced in Tmem30a deficient fetal liver cells. Consistently, knockdown of TMEM30A in human CD34+ cells also impaired erythropoiesis. Our findings demonstrate that Tmem30a plays a critical role in erythropoiesis by regulating the EPOR signaling pathway through the formation of membrane rafts in erythroid cells.
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Affiliation(s)
- Fan Yang
- Key Laboratory of Regenerative Medicine of Ministry of Education, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Institute of Aging and Regenerative Medicine, Jinan University, Guangzhou, China
| | - Yumin Huang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xianda Chen
- Key Laboratory of Regenerative Medicine of Ministry of Education, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Institute of Aging and Regenerative Medicine, Jinan University, Guangzhou, China
| | - Lu Liu
- Key Laboratory of Regenerative Medicine of Ministry of Education, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Institute of Aging and Regenerative Medicine, Jinan University, Guangzhou, China
| | - Dandan Liao
- Key Laboratory of Regenerative Medicine of Ministry of Education, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Institute of Aging and Regenerative Medicine, Jinan University, Guangzhou, China
| | - Huan Zhang
- Laboratory of Membrane Biology, New York Blood Center, New York, NY, USA.,School of Life Science, Zhengzhou University, Zhengzhou, China
| | - Gang Huang
- Division of Pathology and Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Wenjing Liu
- The Sichuan Provincial Key Laboratory for Human Disease Gene Study, Institute of Laboratory Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China and Chengdu, Sichuan, China
| | - Xianjun Zhu
- The Sichuan Provincial Key Laboratory for Human Disease Gene Study, Institute of Laboratory Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China and Chengdu, Sichuan, China.,Chengdu Institute of Biology, Sichuan Translational Medicine Research Hospital, Chinese Academy of Sciences, Chengdu, China
| | - Wengong Wang
- Department of Biochemistry and Molecular Biology, Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Cheryl A Lobo
- Laboratory of Blood-Borne Parasites, New York Blood Center, New York, NY, USA
| | | | - Xiuli An
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China .,Laboratory of Membrane Biology, New York Blood Center, New York, NY, USA.,School of Life Science, Zhengzhou University, Zhengzhou, China
| | - Zhenyu Ju
- Key Laboratory of Regenerative Medicine of Ministry of Education, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Institute of Aging and Regenerative Medicine, Jinan University, Guangzhou, China .,Institute of Aging Research, School of Medicine, Hangzhou Normal University, Hangzhou, China
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46
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Maturation-associated gene expression profiles during normal human bone marrow erythropoiesis. Cell Death Discov 2019; 5:69. [PMID: 30854228 PMCID: PMC6395734 DOI: 10.1038/s41420-019-0151-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 11/23/2018] [Accepted: 11/29/2018] [Indexed: 02/07/2023] Open
Abstract
Erythropoiesis has been extensively studied using in vitro and in vivo animal models. Despite this, there is still limited data about the gene expression profiles (GEP) of primary (ex vivo) normal human bone marrow (BM) erythroid maturation. We investigated the GEP of nucleated red blood cell (NRBC) precursors during normal human BM erythropoiesis. Three maturation-associated populations of NRBC were identified and purified from (fresh) normal human BM by flow cytometry and the GEP of each purified cell population directly analyzed using DNA-oligonucleotide microarrays. Overall, 6569 genes (19% of the genes investigated) were expressed in ≥1 stage of BM erythropoiesis at stable (e.g., genes involved in DNA process, cell signaling, protein organization and hemoglobin production) or variable amounts (e.g., genes related to cell differentiation, apoptosis, metabolism), the latter showing a tendency to either decrease from stage 1 to 3 (genes associated with regulation of erythroid differentiation and survival, e.g., SPI1, STAT5A) or increase from stage 2 to stage 3 (genes associated with autophagy, erythroid functions such as heme production, e.g., ALAS1, ALAS2), iron metabolism (e.g., ISCA1, SLC11A2), protection from oxidative stress (e.g., UCP2, PARK7), and NRBC enucleation (e.g., ID2, RB1). Interestingly, genes involved in apoptosis (e.g., CASP8, P2RX1) and immune response (e.g., FOXO3, TRAF6) were also upregulated in the last stage (stage 3) of maturation of NRBC precursors. Our results confirm and extend on previous observations and providing a frame of reference for better understanding the critical steps of human erythroid maturation and its potential alteration in patients with different clonal and non-clonal erythropoietic disorders.
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47
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Aoto M, Iwashita A, Mita K, Ohkubo N, Tsujimoto Y, Mitsuda N. Transferrin receptor 1 is required for enucleation of mouse erythroblasts during terminal differentiation. FEBS Open Bio 2019; 9:291-303. [PMID: 30761254 PMCID: PMC6356176 DOI: 10.1002/2211-5463.12573] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 12/04/2018] [Accepted: 12/04/2018] [Indexed: 12/25/2022] Open
Abstract
Enucleation is the process whereby the nucleus is extruded from the erythroblast during late stage mammalian erythropoiesis. However, the specific signaling pathways involved in this process remain unclear. To better understand the mechanisms underlying erythroblast enucleation, we investigated erythroblast enucleation using both the spleens of adult mice with phenylhydrazine‐induced anemia and mouse fetal livers. Our results indicated that both iron‐bound transferrin (holo‐Tf) and the small‐molecule iron transporter hinokitiol with iron ions (hinokitiol plus iron) promote hemoglobin synthesis and the enucleation of mouse spleen‐derived erythroblasts. Although an antitransferrin receptor 1 (TfR1) monoclonal antibody inhibited both enucleation and hemoglobin synthesis promoted by holo‐Tf, it inhibited only enucleation, but not hemoglobin synthesis, promoted by hinokitiol plus iron. Furthermore, siRNA against mouse TfR1 were found to suppress the enucleation of mouse fetal liver‐derived erythroblasts, and the endocytosis inhibitor MitMAB inhibited enucleation, hemoglobin synthesis, and the internalization of TfR1 promoted by both types of stimuli. Collectively, our results suggest that TfR1, iron ions, and endocytosis play important roles in mouse erythroblast enucleation.
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Affiliation(s)
- Mamoru Aoto
- Department of Circulatory Physiology Graduate School of Medicine Ehime University Japan
| | - Akiho Iwashita
- Department of Circulatory Physiology Graduate School of Medicine Ehime University Japan
| | - Kanako Mita
- Department of Circulatory Physiology Graduate School of Medicine Ehime University Japan
| | - Nobutaka Ohkubo
- Department of Circulatory Physiology Graduate School of Medicine Ehime University Japan
| | - Yoshihide Tsujimoto
- Department of Molecular and Cellular Biology Research Center Osaka International Cancer Institute Japan
| | - Noriaki Mitsuda
- Department of Circulatory Physiology Graduate School of Medicine Ehime University Japan
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48
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Yien YY, Shi J, Chen C, Cheung JTM, Grillo AS, Shrestha R, Li L, Zhang X, Kafina MD, Kingsley PD, King MJ, Ablain J, Li H, Zon LI, Palis J, Burke MD, Bauer DE, Orkin SH, Koehler CM, Phillips JD, Kaplan J, Ward DM, Lodish HF, Paw BH. FAM210B is an erythropoietin target and regulates erythroid heme synthesis by controlling mitochondrial iron import and ferrochelatase activity. J Biol Chem 2018; 293:19797-19811. [PMID: 30366982 DOI: 10.1074/jbc.ra118.002742] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 09/11/2018] [Indexed: 01/01/2023] Open
Abstract
Erythropoietin (EPO) signaling is critical to many processes essential to terminal erythropoiesis. Despite the centrality of iron metabolism to erythropoiesis, the mechanisms by which EPO regulates iron status are not well-understood. To this end, here we profiled gene expression in EPO-treated 32D pro-B cells and developing fetal liver erythroid cells to identify additional iron regulatory genes. We determined that FAM210B, a mitochondrial inner-membrane protein, is essential for hemoglobinization, proliferation, and enucleation during terminal erythroid maturation. Fam210b deficiency led to defects in mitochondrial iron uptake, heme synthesis, and iron-sulfur cluster formation. These defects were corrected with a lipid-soluble, small-molecule iron transporter, hinokitiol, in Fam210b-deficient murine erythroid cells and zebrafish morphants. Genetic complementation experiments revealed that FAM210B is not a mitochondrial iron transporter but is required for adequate mitochondrial iron import to sustain heme synthesis and iron-sulfur cluster formation during erythroid differentiation. FAM210B was also required for maximal ferrochelatase activity in differentiating erythroid cells. We propose that FAM210B functions as an adaptor protein that facilitates the formation of an oligomeric mitochondrial iron transport complex, required for the increase in iron acquisition for heme synthesis during terminal erythropoiesis. Collectively, our results reveal a critical mechanism by which EPO signaling regulates terminal erythropoiesis and iron metabolism.
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Affiliation(s)
- Yvette Y Yien
- From the Department of Biological Sciences, University of Delaware, Newark, Delaware 19716, .,the Division of Hematology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115
| | - Jiahai Shi
- the Whitehead Institute and Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Caiyong Chen
- the Division of Hematology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115
| | - Jesmine T M Cheung
- the Department of Chemistry and Biochemistry, UCLA, Los Angeles, California 90095
| | - Anthony S Grillo
- the Department of Chemistry and Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
| | - Rishna Shrestha
- the Department of Pathology, University of Utah School of Medicine, Salt Lake City, Utah 84112
| | - Liangtao Li
- the Department of Pathology, University of Utah School of Medicine, Salt Lake City, Utah 84112
| | - Xuedi Zhang
- From the Department of Biological Sciences, University of Delaware, Newark, Delaware 19716
| | - Martin D Kafina
- the Division of Hematology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115
| | - Paul D Kingsley
- the Center for Pediatric Biomedical Research, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York 14642
| | - Matthew J King
- the Division of Hematology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115
| | - Julien Ablain
- the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts 02115
| | - Hojun Li
- the Whitehead Institute and Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Leonard I Zon
- the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts 02115.,the Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, and
| | - James Palis
- the Center for Pediatric Biomedical Research, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York 14642
| | - Martin D Burke
- the Department of Chemistry and Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
| | - Daniel E Bauer
- the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts 02115.,the Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, and
| | - Stuart H Orkin
- the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts 02115.,the Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, and
| | - Carla M Koehler
- the Department of Chemistry and Biochemistry, UCLA, Los Angeles, California 90095
| | - John D Phillips
- the Division of Hematology and Hematologic Malignancy, University of Utah School of Medicine, Salt Lake City, Utah 84112
| | - Jerry Kaplan
- the Department of Pathology, University of Utah School of Medicine, Salt Lake City, Utah 84112
| | - Diane M Ward
- the Department of Pathology, University of Utah School of Medicine, Salt Lake City, Utah 84112
| | - Harvey F Lodish
- the Whitehead Institute and Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Barry H Paw
- the Division of Hematology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115.,the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts 02115.,the Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, and
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49
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Yang X, Tan Y, Wang P, Zhang H, Zhao M, Zhao X, Wang K. PML-RARα interferes with erythropoiesis by repressing LMO2 in acute promyelocytic leukaemia. J Cell Mol Med 2018; 22:6275-6284. [PMID: 30320491 PMCID: PMC6237603 DOI: 10.1111/jcmm.13917] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 07/06/2018] [Accepted: 08/27/2018] [Indexed: 12/21/2022] Open
Abstract
The PML‐RARα fusion gene, generated by the t(15;17) chromosome translocation, is regarded as the initiating factor of acute promyelocytic leukaemia (APL). In addition to the well‐known effects on blocking myeloid differentiation at the promyelocytic stage, promyelocytic leukaemia‐retinoic acid receptor α (PML‐RARα) has also been reported to interfere with multiple differentiation processes, including erythroid differentiation. However, the detailed molecular mechanism by which PML‐RARα impairs erythropoiesis has not yet been fully addressed. By chromatin immunoprecipitation‐PCR assay, we found that PML‐RARα bound to the distal promoter region of LMO2 (LIM‐only protein 2), a critical erythroid‐specific transcription factor. Luciferase reporter assays and qRT‐PCR results demonstrated that PML‐RARα down‐regulated the expression of the LMO2 distal transcript through transrepressing its promoter activity. Analysis of gene expression profiling data from large cohorts of acute myeloid leukaemia (AML) patients confirmed that LMO2 expressed at a markedly lower level in APL patients in comparison to non‐APL AML patients. Further flow cytometry analysis demonstrated that PML‐RARα inhibited erythropoietin‐induced erythroid differentiation by down‐regulating LMO2 expression. Our findings reveal a previously unidentified mechanism, by which PML‐RARα interferes with erythropoiesis through directly targeting and transrepressing LMO2 expression in the development of APL.
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Affiliation(s)
- Xianwen Yang
- State Key Laboratory of Medical Genomics and Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yun Tan
- State Key Laboratory of Medical Genomics and Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ping Wang
- State Key Laboratory of Medical Genomics and Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hui Zhang
- State Key Laboratory of Medical Genomics and Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ming Zhao
- State Key Laboratory of Medical Genomics and Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xujie Zhao
- State Key Laboratory of Medical Genomics and Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kankan Wang
- State Key Laboratory of Medical Genomics and Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Sino-French Research Center for Life Sciences and Genomics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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50
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Tanimura N, Liao R, Wilson GM, Dent MR, Cao M, Burstyn JN, Hematti P, Liu X, Zhang Y, Zheng Y, Keles S, Xu J, Coon JJ, Bresnick EH. GATA/Heme Multi-omics Reveals a Trace Metal-Dependent Cellular Differentiation Mechanism. Dev Cell 2018; 46:581-594.e4. [PMID: 30122630 DOI: 10.1016/j.devcel.2018.07.022] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 06/01/2018] [Accepted: 07/19/2018] [Indexed: 01/27/2023]
Abstract
By functioning as an enzyme cofactor, hemoglobin component, and gene regulator, heme is vital for life. One mode of heme-regulated transcription involves amplifying the activity of GATA-1, a key determinant of erythrocyte differentiation. To discover biological consequences of the metal cofactor-transcription factor mechanism, we merged GATA-1/heme-regulated sectors of the proteome and transcriptome. This multi-omic analysis revealed a GATA-1/heme circuit involving hemoglobin subunits, ubiquitination components, and proteins not implicated in erythrocyte biology, including the zinc exporter Slc30a1. Though GATA-1 induced expression of Slc30a1 and the zinc importer Slc39a8, Slc39a8 dominantly increased intracellular zinc, which conferred erythroblast survival. Subsequently, a zinc transporter switch, involving decreased importer and sustained exporter expression, reduced intracellular zinc during terminal differentiation. Downregulating Slc30a1 increased intracellular zinc and, strikingly, accelerated differentiation. This analysis established a conserved paradigm in which a GATA-1/heme circuit controls trace metal transport machinery and trace metal levels as a mechanism governing cellular differentiation.
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Affiliation(s)
- Nobuyuki Tanimura
- UW-Madison Blood Research Program, Department of Cell and Regenerative Biology, Wisconsin Institutes for Medical Research, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA; UW Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA
| | - Ruiqi Liao
- UW-Madison Blood Research Program, Department of Cell and Regenerative Biology, Wisconsin Institutes for Medical Research, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA; UW Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA
| | - Gary M Wilson
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Matthew R Dent
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Miao Cao
- UW-Madison Blood Research Program, Department of Cell and Regenerative Biology, Wisconsin Institutes for Medical Research, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA; UW Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA
| | - Judith N Burstyn
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Peiman Hematti
- UW Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA; Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA
| | - Xin Liu
- Children's Medical Center Research Institute, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Yuannyu Zhang
- Children's Medical Center Research Institute, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Ye Zheng
- Department of Biostatistics and Medical Informatics, University of Wisconsin School of Medicine and Public Health, Madison, WI 53706, USA
| | - Sunduz Keles
- Department of Biostatistics and Medical Informatics, University of Wisconsin School of Medicine and Public Health, Madison, WI 53706, USA
| | - Jian Xu
- Children's Medical Center Research Institute, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Joshua J Coon
- Department of Biomolecular Chemistry, University of Wisconsin School of Medicine, Madison, WI 53706, USA; Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA; Morgridge Institute for Research, Madison, WI 53715, USA; Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Emery H Bresnick
- UW-Madison Blood Research Program, Department of Cell and Regenerative Biology, Wisconsin Institutes for Medical Research, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA; UW Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA.
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