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Lu Y, Zhu Q, Wang Y, Luo M, Huang J, Liang Q, Huang L, Ouyang J, Li C, Tang N, Li Y, Kang T, Song Y, Xu X, Ye L, Zheng G, Chen C, Zhu C. Enhancement of PRMT6 binding to a novel germline GATA1 mutation associated with congenital anemia. Haematologica 2024; 109:2955-2968. [PMID: 38385251 PMCID: PMC11367199 DOI: 10.3324/haematol.2023.284183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 02/14/2024] [Indexed: 02/23/2024] Open
Abstract
Mutations in the master hematopoietic transcription factor GATA1 are often associated with functional defects in erythropoiesis and megakaryopoiesis. In this study, we identified a novel GATA1 germline mutation (c.1162delGG, p.Leu387Leufs*62) in a patient with congenital anemia and occasional thrombocytopenia. The C-terminal GATA1, a rarely studied mutational region, undergoes frameshifting translation as a consequence of this double-base deletion mutation. To investigate the specific function and pathogenic mechanism of this mutant, in vitro mutant models of stable re-expression cells were generated. The mutation was subsequently validated to cause diminished transcriptional activity of GATA1 and defective differentiation of erythroid and megakaryocytes. Using proximity labeling and mass spectrometry, we identified selective alterations in the proximal protein networks of the mutant, revealing decreased binding to a set of normal GATA1-interaction proteins, including the essential co-factor FOG1. Notably, our findings further demonstrated enhanced recruitment of the protein arginine methyltransferase PRMT6, which mediates histone modification at H3R2me2a and represses transcription activity. We also found an enhanced binding of this mutant GATA1/PRMT6 complex to the transcriptional regulatory elements of GATA1's target genes. Moreover, treatment of the PRMT6 inhibitor MS023 could partially rescue the inhibited transcriptional and impaired erythroid differentiation caused by the GATA1 mutation. Taken together, our results provide molecular insights into erythropoiesis in which mutation leads to partial loss of GATA1 function, and the role of PRMT6 and its inhibitor MS023 in congenital anemia, highlighting PRMT6 binding as a negative factor of GATA1 transcriptional activity in aberrant hematopoiesis.
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Affiliation(s)
- Yingsi Lu
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong
| | - Qingqing Zhu
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong
| | - Yun Wang
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong
| | - Meiling Luo
- Pediatric Hematology Laboratory, Division of Hematology/Oncology, Department of Pediatrics, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong
| | - Junbin Huang
- Pediatric Hematology Laboratory, Division of Hematology/Oncology, Department of Pediatrics, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong
| | - Qian Liang
- Department of Spine Surgery, the First Affiliated Hospital, Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong
| | - Lifen Huang
- Pediatric Hematology Laboratory, Division of Hematology/Oncology, Department of Pediatrics, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong
| | - Jing Ouyang
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong
| | - Chenxin Li
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong
| | - Nannan Tang
- Pediatric Hematology Laboratory, Division of Hematology/Oncology, Department of Pediatrics, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong
| | - Yan Li
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong
| | - Tingting Kang
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong
| | - Yujia Song
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong
| | - Xiaoyu Xu
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong, China; Department of Obstetrics, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong
| | - Liping Ye
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong
| | - Guoxing Zheng
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong.
| | - Chun Chen
- Pediatric Hematology Laboratory, Division of Hematology/Oncology, Department of Pediatrics, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong.
| | - Chengming Zhu
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong.
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Takasaki K, Wafula EK, Kumar SS, Smith D, Gagne AL, French DL, Thom CS, Chou ST. Single-cell transcriptomics reveal synergistic and antagonistic effects of T21 and GATA1s on hematopoiesis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.24.595827. [PMID: 38826323 PMCID: PMC11142253 DOI: 10.1101/2024.05.24.595827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2024]
Abstract
Trisomy 21 (T21), or Down syndrome (DS), is associated with baseline macrocytic erythrocytosis, thrombocytopenia, and neutrophilia, and transient abnormal myelopoiesis (TAM) and myeloid leukemia of DS (ML-DS). TAM and ML-DS blasts both arise from an aberrant megakaryocyte-erythroid progenitor and exclusively express GATA1s, the truncated isoform of GATA1 , while germline GATA1s mutations in a non-T21 context lead to congenital cytopenias without a leukemic predisposition. This suggests that T21 and GATA1s perturb hematopoiesis independently and synergistically, but this interaction has been challenging to study in part due to limited human cell and murine models. To dissect the developmental impacts of GATA1s on hematopoiesis in euploid and T21 cells, we performed a single-cell RNA-sequencing timecourse on hematopoietic progenitors (HPCs) derived from isogenic human induced pluripotent stem cells differing only by chromosome 21 and/or GATA1 status. These HPCs were surprisingly heterogeneous and displayed spontaneous lineage skew apparently dictated by T21 and/or GATA1s. In euploid cells, GATA1s nearly eliminated erythropoiesis, impaired MK maturation, and promoted an immature myelopoiesis, while in T21 cells, GATA1s appeared to compete with the enhanced erythropoiesis and suppressed megakaryopoiesis driven by T21 to give rise to immature erythrocytes, MKs, and myeloid cells. T21 and GATA1s both disrupted temporal regulation of lineage-specific transcriptional programs and specifically perturbed cell cycle genes. These findings in an isogenic system can thus be attributed specifically to T21 and GATA1s and suggest that these genetic changes together enhance HPC proliferation at the expense of maturation, consistent with a pro-leukemic phenotype.
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Ding B, Mao Y, Li Y, Xin M, Jiang S, Hu X, Xu Q, Ding Q, Wang X. A novel GATA1 variant p.G229D causing the defect of procoagulant platelet formation. Thromb Res 2024; 234:39-50. [PMID: 38159323 DOI: 10.1016/j.thromres.2023.12.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 12/19/2023] [Accepted: 12/19/2023] [Indexed: 01/03/2024]
Abstract
INTRODUCTION GATA1 is one of the master transcription factors in hematopoietic lineages development which is crucial for megakaryocytic differentiation and maturation. Previous studies have shown that distinct GATA1 variants are associated with varying severities of macrothrombocytopenia and platelet dysfunction. OBJECTIVE To determine the underlying pathological mechanisms of a novel GATA1 variant (c. 686G > A, p. G229D) in a patient with recurrent traumatic muscle hematomas. METHODS Comprehensive phenotypic analysis of the patient platelets was performed. Procoagulant platelet formation and function were detected using flow cytometry assay and thrombin generation test (TGT), respectively. The ANO6 expression was measured by qPCR and western blot. The intracellular supramaximal calcium flux was detected by Fluo-5N fluorescent assay. RESULTS The patient displayed mild macrothrombocytopenia with defects of platelet granules, aggregation, and integrin αIIbβ3 activation. The percentage of the procoagulant platelet formation of the patient upon the stimulation of thrombin plus collagen was lower than that of the healthy controls (40.9 % vs 49.0 % ± 5.1 %). The patient platelets exhibited a marked reduction of thrombin generation in platelet rich plasma TGT compared to the healthy controls (peak value: ∼70 % of the healthy controls; the endogenous thrombin potential: ∼40 % of the healthy controls). The expression of ANO6 and intracellular calcium flux were impaired, which together with abnormal granules of the patient platelets might contribute to defect of procoagulant platelet function. CONCLUSIONS The G229D variant could lead to a novel platelet phenotype characterized by defective procoagulant platelet formation and function, which extended the range of GATA1 variants associated platelet disorders.
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Affiliation(s)
- Biying Ding
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yinqi Mao
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yang Li
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Min Xin
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Shifeng Jiang
- State Key Laboratory of Microbial Metabolism & Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaobo Hu
- Department of Molecular Biology, Shanghai Center for Clinical Laboratory, Shanghai, China
| | - Qin Xu
- State Key Laboratory of Microbial Metabolism & Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China.
| | - Qiulan Ding
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Collaborative Innovation Center of Hematology, Shanghai Jiaotong University School of Medicine, Shanghai, China.
| | - Xuefeng Wang
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Collaborative Innovation Center of Hematology, Shanghai Jiaotong University School of Medicine, Shanghai, China.
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Takasaki K, Chou ST. GATA1 in Normal and Pathologic Megakaryopoiesis and Platelet Development. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1459:261-287. [PMID: 39017848 DOI: 10.1007/978-3-031-62731-6_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/18/2024]
Abstract
GATA1 is a highly conserved hematopoietic transcription factor (TF), essential for normal erythropoiesis and megakaryopoiesis, that encodes a full-length, predominant isoform and an amino (N) terminus-truncated isoform GATA1s. It is consistently expressed throughout megakaryocyte development and interacts with its target genes either independently or in association with binding partners such as FOG1 (friend of GATA1). While the N-terminus and zinc finger have classically been demonstrated to be necessary for the normal regulation of platelet-specific genes, murine models, cell-line studies, and human case reports indicate that the carboxy-terminal activation domain and zinc finger also play key roles in precisely controlling megakaryocyte growth, proliferation, and maturation. Murine models have shown that disruptions to GATA1 increase the proliferation of immature megakaryocytes with abnormal architecture and impaired terminal differentiation into platelets. In humans, germline GATA1 mutations result in variable cytopenias, including macrothrombocytopenia with abnormal platelet aggregation and excessive bleeding tendencies, while acquired GATA1s mutations in individuals with trisomy 21 (T21) result in transient abnormal myelopoiesis (TAM) and myeloid leukemia of Down syndrome (ML-DS) arising from a megakaryocyte-erythroid progenitor (MEP). Taken together, GATA1 plays a key role in regulating megakaryocyte differentiation, maturation, and proliferative capacity. As sequencing and proteomic technologies expand, additional GATA1 mutations and regulatory mechanisms contributing to human diseases of megakaryocytes and platelets are likely to be revealed.
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Affiliation(s)
- Kaoru Takasaki
- Department of Pediatrics, Division of Hematology, University of Pennsylvania Perelman School of Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Stella T Chou
- Department of Pediatrics, Division of Hematology, University of Pennsylvania Perelman School of Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA.
- Department of Pathology and Laboratory Medicine, Division of Transfusion Medicine, University of Pennsylvania Perelman School of Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA.
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McGrath FM, Francis A, Fatovich DM, Macdonald SPJ, Arendts G, Woo AJ, Bosio E. Genes involved in platelet aggregation and activation are downregulated during acute anaphylaxis in humans. Clin Transl Immunology 2022; 11:e1435. [PMID: 36583159 PMCID: PMC9791329 DOI: 10.1002/cti2.1435] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 09/20/2022] [Accepted: 12/05/2022] [Indexed: 12/27/2022] Open
Abstract
Objective Mechanisms underlying the anaphylactic reaction in humans are not fully understood. Here, we aimed at improving our understanding of anaphylaxis by investigating gene expression changes. Methods Microarray data set GSE69063 was analysed, describing emergency department (ED) patients with severe anaphylaxis (n = 12), moderate anaphylaxis (n = 6), sepsis (n = 20) and trauma (n = 11). Samples were taken at ED presentation (T0) and 1 h later (T1). Healthy controls were age and sex matched to ED patient groups. Gene expression changes were determined using limma, and pathway analysis applied. Differentially expressed genes were validated in an independent cohort of anaphylaxis patients (n = 31) and matched healthy controls (n = 10), using quantitative reverse transcription-polymerase chain reaction. Results Platelet aggregation was dysregulated in severe anaphylaxis at T0, but not in moderate anaphylaxis, sepsis or trauma. Dysregulation was not observed in patients who received adrenaline before T0. Seven genes (GATA1 (adjusted P-value = 5.57 × 10-4), TLN1 (adjusted P-value = 9.40 × 10-4), GP1BA (adjusted P-value = 2.15 × 10-2), SELP (adjusted P-value = 2.29 × 10-2), MPL (adjusted P-value = 1.20 × 10-2), F13A1 (adjusted P-value = 1.39 × 10-2) and SPARC (adjusted P-value = 4.06 × 10-2)) were significantly downregulated in severe anaphylaxis patients who did not receive adrenaline before ED arrival, compared with healthy controls. One gene (TLN1 (adjusted P-value = 1.29 × 10-2)) was significantly downregulated in moderate anaphylaxis patients who did not receive adrenaline before ED arrival, compared with healthy controls. Conclusion Downregulation of genes involved in platelet aggregation and activation is a unique feature of the early anaphylactic reaction not previously reported and may be associated with reaction severity.
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Affiliation(s)
- Francesca M McGrath
- Centre for Clinical Research in Emergency MedicineHarry Perkins Institute of Medical ResearchPerthWAAustralia
| | - Abbie Francis
- Centre for Clinical Research in Emergency MedicineHarry Perkins Institute of Medical ResearchPerthWAAustralia,Telethon Kids Institute, Centre for Child Health Research, The University of Western AustraliaNedlandsWAAustralia
| | - Daniel M Fatovich
- Centre for Clinical Research in Emergency MedicineHarry Perkins Institute of Medical ResearchPerthWAAustralia,Discipline of Emergency Medicine, Medical SchoolUniversity of Western AustraliaPerthWAAustralia,Emergency DepartmentRoyal Perth HospitalPerthWAAustralia
| | - Stephen PJ Macdonald
- Centre for Clinical Research in Emergency MedicineHarry Perkins Institute of Medical ResearchPerthWAAustralia,Discipline of Emergency Medicine, Medical SchoolUniversity of Western AustraliaPerthWAAustralia,Emergency DepartmentRoyal Perth HospitalPerthWAAustralia
| | - Glenn Arendts
- Centre for Clinical Research in Emergency MedicineHarry Perkins Institute of Medical ResearchPerthWAAustralia,Discipline of Emergency Medicine, Medical SchoolUniversity of Western AustraliaPerthWAAustralia,Emergency DepartmentFiona Stanley HospitalPerthWAAustralia
| | - Andrew J Woo
- Laboratory for Cancer MedicineHarry Perkins Institute of Medical ResearchPerthWAAustralia,School of Medical and Health SciencesEdith Cowan UniversityPerthWAAustralia
| | - Erika Bosio
- Centre for Clinical Research in Emergency MedicineHarry Perkins Institute of Medical ResearchPerthWAAustralia,Discipline of Emergency Medicine, Medical SchoolUniversity of Western AustraliaPerthWAAustralia
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Wu Y, Zeng Z, Guo Y, Song L, Weatherhead JE, Huang X, Zeng Y, Bimler L, Chang CY, Knight JM, Valladolid C, Sun H, Cruz MA, Hube B, Naglik JR, Luong AU, Kheradmand F, Corry DB. Candida albicans elicits protective allergic responses via platelet mediated T helper 2 and T helper 17 cell polarization. Immunity 2021; 54:2595-2610.e7. [PMID: 34506733 DOI: 10.1016/j.immuni.2021.08.009] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 05/19/2021] [Accepted: 08/10/2021] [Indexed: 12/24/2022]
Abstract
Fungal airway infection (airway mycosis) is an important cause of allergic airway diseases such as asthma, but the mechanisms by which fungi trigger asthmatic reactions are poorly understood. Here, we leverage wild-type and mutant Candida albicans to determine how this common fungus elicits characteristic Th2 and Th17 cell-dependent allergic airway disease in mice. We demonstrate that rather than proteinases that are essential virulence factors for molds, C. albicans instead promoted allergic airway disease through the peptide toxin candidalysin. Candidalysin activated platelets through the Von Willebrand factor (VWF) receptor GP1bα to release the Wnt antagonist Dickkopf-1 (Dkk-1) to drive Th2 and Th17 cell responses that correlated with reduced lung fungal burdens. Platelets simultaneously precluded lethal pulmonary hemorrhage resulting from fungal lung invasion. Thus, in addition to hemostasis, platelets promoted protection against C. albicans airway mycosis through an antifungal pathway involving candidalysin, GP1bα, and Dkk-1 that promotes Th2 and Th17 responses.
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Affiliation(s)
- Yifan Wu
- Department of Pathology & Immunology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Zhimin Zeng
- Division of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Yubiao Guo
- Division of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Lizhen Song
- Department of Medicine, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Jill E Weatherhead
- Department of Medicine, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA; Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA; The National School of Tropical Medicine, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Xinyan Huang
- Division of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China; Department of Medicine, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Yuying Zeng
- Division of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Lynn Bimler
- Department of Pathology & Immunology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA; The National School of Tropical Medicine, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Cheng-Yen Chang
- Department of Medicine, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA; The Translational Biology and Molecular Medicine Program, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - John M Knight
- Department of Pathology & Immunology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA; The Biology of Inflammation Center, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Christian Valladolid
- Department of Medicine, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA; Department of Molecular Physiology & Biophysics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA; Michael E. DeBakey VA Center for Translational Research on Inflammatory Diseases, Houston Texas, 77030, USA
| | - Hua Sun
- Department of Otolaryngology, McGovern Medical School of the University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Miguel A Cruz
- Department of Medicine, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA; Michael E. DeBakey VA Center for Translational Research on Inflammatory Diseases, Houston Texas, 77030, USA
| | - Bernhard Hube
- Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology - Hans Knoell Institute Jena (HKI), Jena 07745, Germany; Institute of Microbiology, Friedrich Schiller University, Jena 07737, Germany
| | - Julian R Naglik
- Centre for Host-Microbiome Interactions, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London SE1 1UL, UK
| | - Amber U Luong
- Department of Otolaryngology, McGovern Medical School of the University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Farrah Kheradmand
- Department of Pathology & Immunology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA; Department of Medicine, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA; The Biology of Inflammation Center, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA; Michael E. DeBakey VA Center for Translational Research on Inflammatory Diseases, Houston Texas, 77030, USA
| | - David B Corry
- Department of Pathology & Immunology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA; Department of Medicine, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA; The Biology of Inflammation Center, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA; Michael E. DeBakey VA Center for Translational Research on Inflammatory Diseases, Houston Texas, 77030, USA.
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Exploring the Leukemogenic Potential of GATA-1 S, the Shorter Isoform of GATA-1: Novel Insights into Mechanisms Hampering Respiratory Chain Complex II Activity and Limiting Oxidative Phosphorylation Efficiency. Antioxidants (Basel) 2021; 10:antiox10101603. [PMID: 34679737 PMCID: PMC8533167 DOI: 10.3390/antiox10101603] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/05/2021] [Accepted: 10/07/2021] [Indexed: 12/02/2022] Open
Abstract
GATA-1 is a key regulator of hematopoiesis. A balanced ratio of its two isoforms, GATA-1FL and GATA-1S, contributes to normal hematopoiesis, whereas aberrant expression of GATA-1S alters the differentiation/proliferation potential of hematopoietic precursors and represents a poor prognostic factor in myeloid leukemia. We previously reported that GATA-1S over-expression correlates with high levels of the succinate dehydrogenase subunit C (SDHC). Alternative splicing variants of the SDHC transcript are over-expressed in several tumors and act as potent dominant negative inhibitors of SDH activity. With this in mind, we investigated the levels of SDHC variants and the oxidative mitochondrial metabolism in myeloid leukemia K562 cells over-expressing GATA-1 isoforms. Over-expression of SDHC variants accompanied by decreased SDH complex II activity and oxidative phosphorylation (OXPHOS) efficiency was found associated only with GATA-1S. Given the tumor suppressor role of SDH and the effects of OXPHOS limitations in leukemogenesis, identification of a link between GATA-1S and impaired complex II activity unveils novel pro-leukemic mechanisms triggered by GATA-1S. Abnormal levels of GATA-1S and SDHC variants were also found in an acute myeloid leukemia patient, thus supporting in vitro results. A better understanding of these mechanisms can contribute to identify novel promising therapeutic targets in myeloid leukemia.
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Saultier P, Cabantous S, Puceat M, Peiretti F, Bigot T, Saut N, Bordet JC, Canault M, van Agthoven J, Loosveld M, Payet-Bornet D, Potier D, Falaise C, Bernot D, Morange PE, Alessi MC, Poggi M. GATA1 pathogenic variants disrupt MYH10 silencing during megakaryopoiesis. J Thromb Haemost 2021; 19:2287-2301. [PMID: 34060193 DOI: 10.1111/jth.15412] [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: 12/18/2020] [Accepted: 05/24/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND GATA1 is an essential transcription factor for both polyploidization and megakaryocyte (MK) differentiation. The polyploidization defect observed in GATA1 variant carriers is not well understood. OBJECTIVE To extensively phenotype two pedigrees displaying different variants in the GATA1 gene and determine if GATA1 controls MYH10 expression levels, a key modulator of MK polyploidization. METHOD A total of 146 unrelated propositi with constitutional thrombocytopenia were screened on a multigene panel. We described the genotype-phenotype correlation in GATA1 variant carriers and investigated the effect of these novel variants on MYH10 transcription using luciferase constructs. RESULTS The clinical profile associated with the p.L268M variant localized in the C terminal zinc finger was unusual in that the patient displayed bleeding and severe platelet aggregation defects without early-onset thrombocytopenia. p.N206I localized in the N terminal zinc finger was associated, on the other hand, with severe thrombocytopenia (15G/L) in early life. High MYH10 levels were evidenced in platelets of GATA1 variant carriers. Analysis of MKs anti-GATA1 chromatin immunoprecipitation-sequencing data revealed two GATA1 binding sites, located in the 3' untranslated region and in intron 8 of the MYH10 gene. Luciferase reporter assays showed their respective role in the regulation of MYH10 gene expression. Both GATA1 variants significantly alter intron 8 driven MYH10 transcription. CONCLUSION The discovery of an association between MYH10 and GATA1 is a novel one. Overall, this study suggests that impaired MYH10 silencing via an intronic regulatory element is the most likely cause of GATA1-related polyploidization defect.
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Affiliation(s)
- Paul Saultier
- Aix Marseille Univ, INSERM, INRAe, C2VN, Marseille, France
- Department of Pediatric Hematology, Immunology and Oncology, APHM, La Timone Children's Hospital, Marseille, France
| | | | | | | | - Timothée Bigot
- Aix Marseille Univ, INSERM, INRAe, C2VN, Marseille, France
| | - Noémie Saut
- Aix Marseille Univ, INSERM, INRAe, C2VN, Marseille, France
- APHM, CHU Timone, French Reference Center on Inherited Platelet Disorders, Marseille, France
| | | | | | - Johannes van Agthoven
- Structural Biology Program, Division of Nephrology/Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
| | - Marie Loosveld
- APHM, CHU Timone, French Reference Center on Inherited Platelet Disorders, Marseille, France
- Aix-Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | | | | | - Céline Falaise
- Department of Pediatric Hematology, Immunology and Oncology, APHM, La Timone Children's Hospital, Marseille, France
- APHM, CHU Timone, French Reference Center on Inherited Platelet Disorders, Marseille, France
| | - Denis Bernot
- Aix Marseille Univ, INSERM, INRAe, C2VN, Marseille, France
| | - Pierre-Emmanuel Morange
- Aix Marseille Univ, INSERM, INRAe, C2VN, Marseille, France
- APHM, CHU Timone, French Reference Center on Inherited Platelet Disorders, Marseille, France
| | - Marie-Christine Alessi
- Aix Marseille Univ, INSERM, INRAe, C2VN, Marseille, France
- APHM, CHU Timone, French Reference Center on Inherited Platelet Disorders, Marseille, France
| | - Marjorie Poggi
- Aix Marseille Univ, INSERM, INRAe, C2VN, Marseille, France
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van Hezel ME, van Manen L, Boshuizen M, Straat M, De Cuyper IM, Beuger B, Nieuwland R, Tanck MWT, de Korte D, Zwaginga JJ, van Bruggen R, Juffermans NP. The effect of red blood cell transfusion on platelet function in critically ill patients. Thromb Res 2019; 184:115-121. [PMID: 31731068 DOI: 10.1016/j.thromres.2019.10.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 10/11/2019] [Accepted: 10/31/2019] [Indexed: 01/28/2023]
Abstract
INTRODUCTION Red blood cell (RBC) transfusion is associated with an increased risk of pro-thrombotic events, but the underlying mechanism is poorly understood. We hypothesized that RBC transfusion modulates platelet activity in critically ill patients with and without sepsis. METHODS In a prospective cohort study, 37 critically ill patients receiving a single RBC unit to correct for anemia were sampled prior to and 1 h after transfusion. Platelet exposure of P-selectin, CD63 and binding of PAC-1 as well as formation of platelet-leukocyte complexes were measured by flow cytometry. The ability of plasma from critically ill patients to induce ex vivo platelet aggregation was assessed by flow cytometry after incubation with platelets from a healthy donor. RESULTS RBC transfusion neither triggered the expression of platelet activation markers nor the formation of platelet-leukocyte complexes. Plasma from critically ill patients induced more spontaneous platelet aggregation prior to RBC transfusion compared to healthy controls, which was further augmented following RBC transfusion. Also collagen-induced platelet aggregation was already increased prior to RBC transfusion compared to healthy controls, and this response was unaffected by RBC transfusion. In contrast, ristocetin-induced platelet agglutination was decreased when compared to controls, suggesting impaired vWF-dependent platelet agglutination, even in the presence of high vWF levels. Following RBC transfusion, ristocetin-induced platelet agglutination further decreased. There were no differences between septic and non-septic recipients in all assays. CONCLUSION Ex vivo platelet aggregation is disturbed in the critically ill. Transfusion of a RBC unit may further increase the spontaneous platelet aggregatory response.
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Affiliation(s)
- Maike E van Hezel
- Department of Blood Cell Research, Sanquin Research, Amsterdam, the Netherlands; Department of Intensive Care Medicine, Amsterdam University Medical Center, location Academic Medical Center, Amsterdam, the Netherlands
| | - Lisa van Manen
- Department of Blood Cell Research, Sanquin Research, Amsterdam, the Netherlands; Department of Intensive Care Medicine, Amsterdam University Medical Center, location Academic Medical Center, Amsterdam, the Netherlands
| | - Margit Boshuizen
- Department of Blood Cell Research, Sanquin Research, Amsterdam, the Netherlands; Department of Intensive Care Medicine, Amsterdam University Medical Center, location Academic Medical Center, Amsterdam, the Netherlands
| | - Marleen Straat
- Department of Intensive Care Medicine, Amsterdam University Medical Center, location Academic Medical Center, Amsterdam, the Netherlands
| | - Iris M De Cuyper
- Department of Blood Cell Research, Sanquin Research, Amsterdam, the Netherlands
| | - Boukje Beuger
- Department of Blood Cell Research, Sanquin Research, Amsterdam, the Netherlands
| | - Rienk Nieuwland
- Laboratory of Experimental Clinical Chemistry, and Vesicle Observation Centre, Academic Medical Center of the University of Amsterdam, Amsterdam, the Netherlands
| | - Michael W T Tanck
- Department of Clinical Epidemiology, Biostatistics and Bioinformatics (KEBB), Academic Medical Center of the University of Amsterdam, Amsterdam, the Netherlands
| | - Dirk de Korte
- Department of Blood Cell Research, Sanquin Research, Amsterdam, the Netherlands; Department of Product and Process Development, Sanquin Blood Bank, Amsterdam, the Netherlands
| | - Jaap Jan Zwaginga
- Department of Immunohematology and Bloodtransfusion, Leiden University Medical Center, Leiden, the Netherlands
| | - Robin van Bruggen
- Department of Blood Cell Research, Sanquin Research, Amsterdam, the Netherlands
| | - Nicole P Juffermans
- Department of Intensive Care Medicine, Amsterdam University Medical Center, location Academic Medical Center, Amsterdam, the Netherlands.
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10
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Shared roles for Scl and Lyl1 in murine platelet production and function. Blood 2019; 134:826-835. [PMID: 31300405 DOI: 10.1182/blood.2019896175] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 07/11/2019] [Indexed: 12/11/2022] Open
Abstract
The stem cell leukemia (Scl or Tal1) protein forms part of a multimeric transcription factor complex required for normal megakaryopoiesis. However, unlike other members of this complex such as Gata1, Fli1, and Runx1, mutations of Scl have not been observed as a cause of inherited thrombocytopenia. We postulated that functional redundancy with its closely related family member, lymphoblastic leukemia 1 (Lyl1) might explain this observation. To determine whether Lyl1 can substitute for Scl in megakaryopoiesis, we examined the platelet phenotype of mice lacking 1 or both factors in megakaryocytes. Conditional Scl knockout (KO) mice crossed with transgenic mice expressing Cre recombinase under the control of the mouse platelet factor 4 (Pf4) promoter generated megakaryocytes with markedly reduced but not absent Scl These Pf4Sclc-KO mice had mild thrombocytopenia and subtle defects in platelet aggregation. However, Pf4Sclc-KO mice generated on an Lyl1-null background (double knockout [DKO] mice) had severe macrothrombocytopenia, abnormal megakaryocyte morphology, defective pro-platelet formation, and markedly impaired platelet aggregation. DKO megakaryocytes, but not single-knockout megakaryocytes, had reduced expression of Gata1, Fli1, Nfe2, and many other genes that cause inherited thrombocytopenia. These gene expression changes were significantly associated with shared Scl and Lyl1 E-box binding sites that were also enriched for Gata1, Ets, and Runx1 motifs. Thus, Scl and Lyl1 share functional roles in platelet production by regulating expression of partner proteins including Gata1. We propose that this functional redundancy provides one explanation for the absence of Scl and Lyl1 mutations in inherited thrombocytopenia.
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11
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Csete D, Simon E, Alatshan A, Aradi P, Dobó-Nagy C, Jakus Z, Benkő S, Győri DS, Mócsai A. Hematopoietic or Osteoclast-Specific Deletion of Syk Leads to Increased Bone Mass in Experimental Mice. Front Immunol 2019; 10:937. [PMID: 31134061 PMCID: PMC6524727 DOI: 10.3389/fimmu.2019.00937] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Accepted: 04/11/2019] [Indexed: 01/08/2023] Open
Abstract
Syk is a non-receptor tyrosine kinase critically involved in signaling by various immunoreceptors including B-cell-receptors and activating Fc-receptors. We have previously shown that Syk also mediates immunoreceptor-like signals required for the in vitro development and function of osteoclasts. However, the perinatal lethality of Syk -/- mice precluded the analysis of the role of Syk in in vivo bone metabolism. To overcome that problem, we generated mice with osteoclast-specific (Syk ΔOC ) or hematopoietic (Syk ΔHaemo ) Syk deficiency by conditional deletion of Syk using Cre recombinase expressed under the control of the Ctsk or Vav1 promoter, respectively. Micro-CT analysis revealed increased bone trabecular density in both Syk ΔOC and Syk ΔHaemo mice, although hematopoietic Syk deficiency caused a more severe phenotype than osteoclast-specific Syk deficiency. Osteoclast-specific Syk deficiency reduced, whereas hematopoietic Syk deficiency completely blocked in vitro development of osteoclasts. Both interventions inhibited the resorptive activity of osteoclasts and osteoclast-specific gene expression. Kinetic analysis of Syk protein levels, Cre expression and the genomic deletion of the Syk flox allele revealed complete and early deletion of Syk from Syk ΔHaemo osteoclasts whereas Syk was incompletely deleted at a later stage of osteoclast development from Syk ΔOC cultures. Those results provide an explanation for the in vivo and in vitro difference between the Syk ΔOC and Syk ΔHaemo mutant strains and suggest late activation of, and incomplete target gene deletion upon, osteoclast-specific Cre expression driven by the Ctsk promoter. Taken together, our results indicate that Syk plays an indispensable role in osteoclast-mediated in vivo bone resorption and suggest that Syk-specific inhibitors may provide therapeutic benefit in inflammatory and other diseases characterized by excessive osteoclast-mediated bone resorption.
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Affiliation(s)
- Dániel Csete
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
| | - Edina Simon
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
| | - Ahmad Alatshan
- Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Petra Aradi
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary.,MTA-SE "Lendület" Lymphatic Physiology Research Group of the Hungarian Academy of Sciences and the Semmelweis University, Budapest, Hungary
| | - Csaba Dobó-Nagy
- Department of Oral Diagnostics, Semmelweis University School of Dentistry, Budapest, Hungary
| | - Zoltán Jakus
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary.,MTA-SE "Lendület" Lymphatic Physiology Research Group of the Hungarian Academy of Sciences and the Semmelweis University, Budapest, Hungary
| | - Szilvia Benkő
- Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Dávid S Győri
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
| | - Attila Mócsai
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
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12
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Tremblay M, Sanchez-Ferras O, Bouchard M. GATA transcription factors in development and disease. Development 2018; 145:145/20/dev164384. [DOI: 10.1242/dev.164384] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
ABSTRACT
The GATA family of transcription factors is of crucial importance during embryonic development, playing complex and widespread roles in cell fate decisions and tissue morphogenesis. GATA proteins are essential for the development of tissues derived from all three germ layers, including the skin, brain, gonads, liver, hematopoietic, cardiovascular and urogenital systems. The crucial activity of GATA factors is underscored by the fact that inactivating mutations in most GATA members lead to embryonic lethality in mouse models and are often associated with developmental diseases in humans. In this Primer, we discuss the unique and redundant functions of GATA proteins in tissue morphogenesis, with an emphasis on their regulation of lineage specification and early organogenesis.
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Affiliation(s)
- Mathieu Tremblay
- Goodman Cancer Research Centre and Department of Biochemistry, McGill University, Montreal H3A 1A3, Canada
| | - Oraly Sanchez-Ferras
- Goodman Cancer Research Centre and Department of Biochemistry, McGill University, Montreal H3A 1A3, Canada
| | - Maxime Bouchard
- Goodman Cancer Research Centre and Department of Biochemistry, McGill University, Montreal H3A 1A3, Canada
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13
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Németh T, Futosi K, Szilveszter K, Vilinovszki O, Kiss-Pápai L, Mócsai A. Lineage-Specific Analysis of Syk Function in Autoantibody-Induced Arthritis. Front Immunol 2018; 9:555. [PMID: 29616043 PMCID: PMC5867294 DOI: 10.3389/fimmu.2018.00555] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 03/05/2018] [Indexed: 12/28/2022] Open
Abstract
Autoantibody production and autoantibody-mediated inflammation are hallmarks of a number of autoimmune diseases. The K/BxN serum-transfer arthritis is one of the most widely used models of the effector phase of autoantibody-induced pathology. Several hematopoietic lineages including neutrophils, platelets, and mast cells have been proposed to contribute to inflammation and tissue damage in this model. We have previously shown that the Syk tyrosine kinase is critically involved in the development in K/BxN serum-transfer arthritis and bone marrow chimeric experiments indicated that Syk is likely involved in one or more hematopoietic lineages during the disease course. The aim of the present study was to further define the lineage(s) in which Syk expression is required for autoantibody-induced arthritis. To this end, K/BxN serum-transfer arthritis was tested in conditional mutant mice in which Syk was deleted in a lineage-specific manner from neutrophils, platelets, or mast cells. Combination of the MRP8-Cre, PF4-Cre, or Mcpt5-Cre transgene with floxed Syk alleles allowed efficient and selective deletion of Syk from neutrophils, platelets, or mast cells, respectively. This has also been confirmed by defective Syk-dependent in vitro functional responses of the respective cell types. In vivo studies revealed nearly complete defect of the development of K/BxN serum-transfer arthritis upon neutrophil-specific deletion of Syk. By contrast, Syk deletion from platelets or mast cells did not affect the development of K/BxN serum-transfer arthritis. Our results indicate that autoantibody-induced arthritis requires Syk expression in neutrophils, whereas, contrary to prior assumptions, Syk expression in platelets or mast cells is dispensable for disease development in this model.
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Affiliation(s)
- Tamás Németh
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary.,MTA-SE "Lendület" Inflammation Physiology Research Group of the Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
| | - Krisztina Futosi
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary.,MTA-SE "Lendület" Inflammation Physiology Research Group of the Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
| | - Kata Szilveszter
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary.,MTA-SE "Lendület" Inflammation Physiology Research Group of the Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
| | - Olivér Vilinovszki
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
| | - Levente Kiss-Pápai
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary.,MTA-SE "Lendület" Inflammation Physiology Research Group of the Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
| | - Attila Mócsai
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary.,MTA-SE "Lendület" Inflammation Physiology Research Group of the Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
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