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Kumar S, Arora R, Gupta S, Ahuja N, Bhagyaraj E, Nanduri R, Kalra R, Khare AK, Kumawat S, Kaushal V, Sharma M, Gupta P. Nuclear receptor Rev-erbα role in fine-tuning erythropoietin gene expression. Blood Adv 2024; 8:3705-3717. [PMID: 38748870 PMCID: PMC11296239 DOI: 10.1182/bloodadvances.2023012228] [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: 11/30/2023] [Accepted: 05/08/2024] [Indexed: 07/13/2024] Open
Abstract
ABSTRACT The regulation of red blood cell (RBC) homeostasis by erythropoietin (EPO) is critical for O2 transport and maintaining the adequate number of RBCs in vertebrates. Therefore, dysregulation in EPO synthesis results in disease conditions such as polycythemia in the case of excessive EPO production and anemia, which occurs when EPO is inadequately produced. EPO plays a crucial role in treating anemic patients; however, its overproduction can increase blood viscosity, potentially leading to fatal heart failure. Consequently, the identification of druggable transcription factors and their associated ligands capable of regulating EPO offers a promising therapeutic approach to address EPO-related disorders. This study unveils a novel regulatory mechanism involving 2 pivotal nuclear receptors (NRs), Rev-ERBA (Rev-erbα, is a truncation of reverse c-erbAa) and RAR-related orphan receptor A (RORα), in the control of EPO gene expression. Rev-erbα acts as a cell-intrinsic negative regulator, playing a vital role in maintaining erythropoiesis at the correct level. It accomplishes this by directly binding to newly identified response elements within the human and mouse EPO gene promoter, thereby repressing EPO production. These findings are further supported by the discovery that a Rev-erbα agonist (SR9011) effectively suppresses hypoxia-induced EPO expression in mice. In contrast, RORα functions as a positive regulator of EPO gene expression, also binding to the same response elements in the promoter to induce EPO production. Finally, the results of this study revealed that the 2 NRs, Rev-erbα and RORα, influence EPO synthesis in a negative and positive manner, respectively, suggesting that the modulating activity of these 2 NRs could provide a method to target disorders linked with EPO dysregulation.
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Affiliation(s)
- Sumit Kumar
- Department of Molecular Biology, CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Rashmi Arora
- Department of Molecular Biology, CSIR-Institute of Microbial Technology, Chandigarh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Shalini Gupta
- Department of Molecular Biology, CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Nancy Ahuja
- Department of Molecular Biology, CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Ella Bhagyaraj
- Department of Molecular Biology, CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Ravikanth Nanduri
- Department of Molecular Biology, CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Rashi Kalra
- Department of Molecular Biology, CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Asheesh Kumar Khare
- Department of Molecular Biology, CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Saumyata Kumawat
- Department of Molecular Biology, CSIR-Institute of Microbial Technology, Chandigarh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Vipashu Kaushal
- Department of Molecular Biology, CSIR-Institute of Microbial Technology, Chandigarh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Mahathi Sharma
- Department of Molecular Biology, CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Pawan Gupta
- Department of Molecular Biology, CSIR-Institute of Microbial Technology, Chandigarh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
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Dang HNN, Viet Luong T, Cao MTT, Bui VT, Tran TT, Nguyen HM. Assessing red blood cell distribution width in Vietnamese heart failure patients: A cross-sectional study. PLoS One 2024; 19:e0301319. [PMID: 39042640 PMCID: PMC11265657 DOI: 10.1371/journal.pone.0301319] [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: 04/15/2024] [Accepted: 07/07/2024] [Indexed: 07/25/2024] Open
Abstract
BACKGROUND Heart failure (HF) is becoming a growing public health concern. Diagnostic tests for determining the severity of HF often come with high costs and require specialized expertise, which makes it difficult to assess HF severity, especially in low-income countries or at primary healthcare facilities. Recently, red blood cell distribution width (RDW) has emerged as a promising, easily accessible marker associated with HF severity. The study aimed to assess changes in RDW levels in HF patients and the diagnostic value of RDW in detecting acute heart failure (AHF) among HF patients. METHODS We conducted a cross-sectional examination involving 351 participants divided into HF and non-HF cohorts. HF was defined and categorized according to the diagnostic and treatment guidelines for AHF and chronic heart failure (CHF) set forth by the European Society of Cardiology (2021). Univariate and multivariate analysis of factors associated with AHF was performed. RESULTS The study revealed that HF patients displayed higher median RDW levels (14.90% [13.70-17.00]) compared to non-HF individuals (13.00% [12.23-13.78]). RDW was notably elevated in HF patients with left ventricular ejection fraction < 50% compared to those with left ventricular ejection fraction ≥ 50%. ROC curve analysis of RDW for AHF detection identified a cutoff value of 13.85%, with a sensitivity of 86.05% and specificity of 47.18%, statistically significant at p < 0.001. RDW > 13.85% was identified as an independent risk factor for AHF in patients with HF, with odds ratios of 2.644 (95% CI, 1.190-5.875; p = 0.017). CONCLUSION The study revealed significant RDW variations in patients with CHF and AHF compared to the control group. These findings suggest that RDW could be a biomarker for detecting HF severity.
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Affiliation(s)
- Hai Nguyen Ngoc Dang
- The Faculty of Medicine, Duy Tan University, Da Nang, Vietnam
- Cardiovascular Center, Hue Central Hospital, Hue, Vietnam
| | - Thang Viet Luong
- University of Medicine and Pharmacy, Hue University, Hue, Vietnam
| | - Mai Thi Thu Cao
- University of Medicine and Pharmacy, Hue University, Hue, Vietnam
| | - Vinh Trung Bui
- University of Medicine and Pharmacy, Hue University, Hue, Vietnam
| | - Thanh Thien Tran
- University of Medicine and Pharmacy, Hue University, Hue, Vietnam
| | - Hung Minh Nguyen
- Vietnam National Heart Institute, Bach Mai Hospital, Hanoi, Vietnam
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Joshi U, Jani D, George LB, Highland H. Human erythrocytes' perplexing behaviour: erythrocytic microRNAs. Mol Cell Biochem 2024:10.1007/s11010-024-05075-0. [PMID: 39037663 DOI: 10.1007/s11010-024-05075-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Accepted: 07/14/2024] [Indexed: 07/23/2024]
Abstract
Erythrocytes have the potential role in erythropoiesis and disease diagnosis. Thought to have lacked nucleic acid content, mammalian erythrocytes are nevertheless able to function for 120-140 days, metabolize heme, maintain oxidative stress, and so on. Mysteriously, erythrocytes proved as largest repositories of microRNAs (miRNAs) some of which are selectively retained and function in mature erythrocytes. They have unique expression patterns and have been found to be linked to specific conditions such as sickle cell anaemia, high-altitude hypoxia, chronic mountain sickness, cardiovascular and metabolic conditions as well as host-parasite interactions. They also have been implicated in cell storage-related damage and the regulation of its survival. However, the mechanism by which miRNAs function in the cell remains unclear. Investigations into the molecular mechanism of miRNAs in erythrocytes via extracellular vesicles have provided important clues in research studies on Plasmodium infection. Erythrocytes are also the primary source of circulating miRNAs but, how they affect the plasma/serum miRNAs profiles are still poorly understood. Erythrocyte-derived exosomal miRNAs, can interact with various body cell types, and have easy access to all regions, making them potentially crucial in various pathophysiological conditions. Which can also improve our understanding to identify potential treatment options and discovery related to non-invasive diagnostic markers. This article emphasizes the importance of erythrocytic miRNAs while focusing on the enigmatic behaviour of erythrocytes. It also sheds light on how this knowledge may be applied in the future to enhance the state of erythrocyte translational research from the standpoint of erythrocytic miRNAs.
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Affiliation(s)
- Urja Joshi
- Department of Biochemistry, School of Sciences, Gujarat University, Ahmedabad, 380009, Gujarat, India.
| | - Dhara Jani
- Department of Zoology, Biomedical Technology, Human Genetics and WLC, School of Sciences, Gujarat University, Ahmedabad, 380009, Gujarat, India
| | - Linz-Buoy George
- Department of Zoology, Biomedical Technology, Human Genetics and WLC, School of Sciences, Gujarat University, Ahmedabad, 380009, Gujarat, India
| | - Hyacinth Highland
- Department of Zoology, Biomedical Technology, Human Genetics and WLC, School of Sciences, Gujarat University, Ahmedabad, 380009, Gujarat, India
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Bresnick EH, Papayannopoulou T, Migliaccio AR. Mechanistic and Biological Perspectives on Erythropoiesis. Exp Hematol 2024; 138:104286. [PMID: 39034024 DOI: 10.1016/j.exphem.2024.104286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
Affiliation(s)
- Emery H Bresnick
- Wisconsin Blood Cancer Research Institute, Carbone Cancer Center, Department of Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA
| | | | - Anna Rita Migliaccio
- Altius Institute for Biomedical Sciences, Seattle, WA, USA; Institute of Nanotechnology, National Research Council (Cnr-NANOTEC), c/o Campus Ecotekne, Lecce, Italy
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Wang X, Zhang W, Zhao S, Yan H, Xin Z, Cui T, Zang R, Zhao L, Wang H, Zhou J, Li X, Yue W, Xi J, Zhang Z, Fang X, Pei X. Decoding human in vitro terminal erythropoiesis originating from umbilical cord blood mononuclear cells and pluripotent stem cells. Cell Prolif 2024; 57:e13614. [PMID: 38499435 PMCID: PMC11216933 DOI: 10.1111/cpr.13614] [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: 07/14/2023] [Revised: 12/18/2023] [Accepted: 01/30/2024] [Indexed: 03/20/2024] Open
Abstract
Ex vivo red blood cell (RBC) production generates unsatisfactory erythroid cells. A deep exploration into terminally differentiated cells is required to understand the impairments for RBC generation and the underlying mechanisms. Here, we mapped an atlas of terminally differentiated cells from umbilical cord blood mononuclear cells (UCBMN) and pluripotent stem cells (PSC) and observed their dynamic regulation of erythropoiesis at single-cell resolution. Interestingly, we detected a few progenitor cells and non-erythroid cells from both origins. In PSC-derived erythropoiesis (PSCE), the expression of haemoglobin switch regulators (BCL11A and ZBTB7A) were significantly absent, which could be the restraint for its adult globin expression. We also found that PSCE were less active in stress erythropoiesis than in UCBMN-derived erythropoiesis (UCBE), and explored an agonist of stress erythropoiesis gene, TRIB3, could enhance the expression of adult globin in PSCE. Compared with UCBE, there was a lower expression of epigenetic-related proteins (e.g., CASPASE 3 and UBE2O) and transcription factors (e.g., FOXO3 and TAL1) in PSCE, which might restrict PSCE's enucleation. Moreover, we characterized a subpopulation with high proliferation capacity marked by CD99high in colony-forming unit-erythroid cells. Inhibition of CD99 reduced the proliferation of PSC-derived cells and facilitated erythroid maturation. Furthermore, CD99-CD99 mediated the interaction between macrophages and erythroid cells, illustrating a mechanism by which macrophages participate in erythropoiesis. This study provided a reference for improving ex vivo RBC generation.
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Affiliation(s)
- Xiaoling Wang
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingPR China
| | - Wei Zhang
- Beijing Institute of Genomics & China National Center for BioinformationChinese Academy of SciencesBeijingPR China
| | - Siqi Zhao
- Beijing Institute of Genomics & China National Center for BioinformationChinese Academy of SciencesBeijingPR China
| | - Hao Yan
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingPR China
| | - Zijuan Xin
- Beijing Institute of Genomics & China National Center for BioinformationChinese Academy of SciencesBeijingPR China
| | - Tiantian Cui
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingPR China
| | - Ruge Zang
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingPR China
| | - Lingping Zhao
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingPR China
| | - Haiyang Wang
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingPR China
| | - Junnian Zhou
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingPR China
| | - Xuan Li
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingPR China
| | - Wen Yue
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingPR China
| | - Jiafei Xi
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingPR China
| | - Zhaojun Zhang
- Beijing Institute of Genomics & China National Center for BioinformationChinese Academy of SciencesBeijingPR China
- Institute for Stem Cell and RegenerationChinese Academy of SciencesBeijingPR China
- Sino‐Danish CollegeUniversity of Chinese Academy of SciencesBeijingPR China
- Beijing Key Laboratory of Genome and Precision Medicine TechnologiesBeijingPR China
| | - Xiangdong Fang
- Beijing Institute of Genomics & China National Center for BioinformationChinese Academy of SciencesBeijingPR China
- Institute for Stem Cell and RegenerationChinese Academy of SciencesBeijingPR China
- Sino‐Danish CollegeUniversity of Chinese Academy of SciencesBeijingPR China
- Beijing Key Laboratory of Genome and Precision Medicine TechnologiesBeijingPR China
- College of Life SciencesUniversity of Chinese Academy of SciencesBeijingPR China
- Savaid Medical SchoolUniversity of Chinese Academy of SciencesBeijingPR China
- School of Future TechnologyUniversity of Chinese Academy of SciencesBeijingPR China
| | - Xuetao Pei
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingPR China
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6
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Xu Y, Gao R, Zhang M, Zeng Q, Zhu G, Qiu J, Su W, Wang R. Deletion of the Mitochondrial Membrane Protein Fam210b Is Associated with the Development of Systemic Lupus Erythematosus. Int J Mol Sci 2024; 25:7253. [PMID: 39000360 PMCID: PMC11241391 DOI: 10.3390/ijms25137253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Revised: 06/23/2024] [Accepted: 06/27/2024] [Indexed: 07/16/2024] Open
Abstract
Mitochondrial dysfunction has been increasingly recognized as a trigger for systemic lupus erythematosus (SLE). Recent bioinformatics studies have suggested Fam210b as a significant candidate for the classification and therapeutic targeting of SLE. To experimentally prove the role of Fam210b in SLE, we constructed Fam210b knockout (Fam210b-/-) mice using the CRISPR-Cas9 method. We found that approximately 15.68% of Fam210b-/- mice spontaneously developed lupus-like autoimmunity, which was characterized by skin ulcerations, splenomegaly, and an increase in anti-double-stranded DNA (anti-dsDNA) IgG antibodies and anti-nuclear antibodies(ANA). Single-cell sequencing showed that Fam210b was mainly expressed in erythroid cells. Critically, the knockout of Fam210b resulted in abnormal erythrocyte differentiation and development in the spleens of mice. Concurrently, the spleens exhibited an increased number of CD71+ erythroid cells, along with elevated levels of reactive oxygen species (ROS) in the erythrocytes. The co-culture of CD71+ erythroid cells and lymphocytes resulted in lymphocyte activation and promoted dsDNA and IgG production. In summary, Fam210b knockout leads to a low probability of lupus-like symptoms in mice through the overproduction of ROS in CD71+ erythroid cells. Thus, Fam210b reduction may serve as a novel key marker that triggers the development of SLE.
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Affiliation(s)
- Yaqi Xu
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China; (Y.X.); (R.G.); (M.Z.); (Q.Z.); (G.Z.); (J.Q.)
- Laboratory for Clinical Medicine, Capital Medical University, Beijing 100069, China
| | - Ran Gao
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China; (Y.X.); (R.G.); (M.Z.); (Q.Z.); (G.Z.); (J.Q.)
- Laboratory for Clinical Medicine, Capital Medical University, Beijing 100069, China
| | - Min Zhang
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China; (Y.X.); (R.G.); (M.Z.); (Q.Z.); (G.Z.); (J.Q.)
- Laboratory for Clinical Medicine, Capital Medical University, Beijing 100069, China
| | - Qi Zeng
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China; (Y.X.); (R.G.); (M.Z.); (Q.Z.); (G.Z.); (J.Q.)
- Laboratory for Clinical Medicine, Capital Medical University, Beijing 100069, China
| | - Gaizhi Zhu
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China; (Y.X.); (R.G.); (M.Z.); (Q.Z.); (G.Z.); (J.Q.)
- Laboratory for Clinical Medicine, Capital Medical University, Beijing 100069, China
| | - Jinming Qiu
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China; (Y.X.); (R.G.); (M.Z.); (Q.Z.); (G.Z.); (J.Q.)
- Laboratory for Clinical Medicine, Capital Medical University, Beijing 100069, China
| | - Wenting Su
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China; (Y.X.); (R.G.); (M.Z.); (Q.Z.); (G.Z.); (J.Q.)
- Laboratory for Clinical Medicine, Capital Medical University, Beijing 100069, China
| | - Renxi Wang
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China; (Y.X.); (R.G.); (M.Z.); (Q.Z.); (G.Z.); (J.Q.)
- Laboratory for Clinical Medicine, Capital Medical University, Beijing 100069, China
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7
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Abdallah J, Williams RG, Awada H, Raman G, Ozcan Y, Orland M, Mete M, Chen W, Gurnari C, Maciejewski JP, Bat T. Thrombocytosis and megakaryocyte changes associated with PRCA. Blood Adv 2024; 8:3058-3062. [PMID: 38564765 PMCID: PMC11215193 DOI: 10.1182/bloodadvances.2023012309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/28/2024] [Accepted: 02/28/2024] [Indexed: 04/04/2024] Open
Affiliation(s)
- Joelle Abdallah
- Division of Hematology and Oncology, UT Southwestern Medical Center, Dallas, TX
| | | | - Hussein Awada
- Translational Hematology and Oncology Research, Cleveland Clinic, Cleveland, OH
| | - Ganesh Raman
- Division of Hematology and Oncology, UT Southwestern Medical Center, Dallas, TX
| | | | - Mark Orland
- Translational Hematology and Oncology Research, Cleveland Clinic, Cleveland, OH
| | - Mutlu Mete
- Department of Computer Science, Texas A&M University-Commerce, Commerce, TX
| | - Weina Chen
- Department of Pathology, UT Southwestern Medical Center, Dallas, TX
| | - Carmelo Gurnari
- Translational Hematology and Oncology Research, Cleveland Clinic, Cleveland, OH
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | | | - Taha Bat
- Division of Hematology and Oncology, UT Southwestern Medical Center, Dallas, TX
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8
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Țichil I, Mitre I, Zdrenghea MT, Bojan AS, Tomuleasa CI, Cenariu D. A Review of Key Regulators of Steady-State and Ineffective Erythropoiesis. J Clin Med 2024; 13:2585. [PMID: 38731114 PMCID: PMC11084473 DOI: 10.3390/jcm13092585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/24/2024] [Accepted: 04/25/2024] [Indexed: 05/13/2024] Open
Abstract
Erythropoiesis is initiated with the transformation of multipotent hematopoietic stem cells into committed erythroid progenitor cells in the erythroblastic islands of the bone marrow in adults. These cells undergo several stages of differentiation, including erythroblast formation, normoblast formation, and finally, the expulsion of the nucleus to form mature red blood cells. The erythropoietin (EPO) pathway, which is activated by hypoxia, induces stimulation of the erythroid progenitor cells and the promotion of their proliferation and survival as well as maturation and hemoglobin synthesis. The regulation of erythropoiesis is a complex and dynamic interaction of a myriad of factors, such as transcription factors (GATA-1, STAT5), cytokines (IL-3, IL-6, IL-11), iron metabolism and cell cycle regulators. Multiple microRNAs are involved in erythropoiesis, mediating cell growth and development, regulating oxidative stress, erythrocyte maturation and differentiation, hemoglobin synthesis, transferrin function and iron homeostasis. This review aims to explore the physiology of steady-state erythropoiesis and to outline key mechanisms involved in ineffective erythropoiesis linked to anemia, chronic inflammation, stress, and hematological malignancies. Studying aberrations in erythropoiesis in various diseases allows a more in-depth understanding of the heterogeneity within erythroid populations and the development of gene therapies to treat hematological disorders.
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Affiliation(s)
- Ioana Țichil
- Faculty of Medicine, University of Medicine and Pharmacy “Iuliu Hatieganu”, 8 Victor Babes Street, 400012 Cluj-Napoca, Romania; (I.M.); (M.T.Z.); (A.S.B.); (C.I.T.); (D.C.)
- Department of Haematology, “Ion Chiricuta” Institute of Oncology, 34–36 Republicii Street, 400015 Cluj-Napoca, Romania
| | - Ileana Mitre
- Faculty of Medicine, University of Medicine and Pharmacy “Iuliu Hatieganu”, 8 Victor Babes Street, 400012 Cluj-Napoca, Romania; (I.M.); (M.T.Z.); (A.S.B.); (C.I.T.); (D.C.)
| | - Mihnea Tudor Zdrenghea
- Faculty of Medicine, University of Medicine and Pharmacy “Iuliu Hatieganu”, 8 Victor Babes Street, 400012 Cluj-Napoca, Romania; (I.M.); (M.T.Z.); (A.S.B.); (C.I.T.); (D.C.)
- Department of Haematology, “Ion Chiricuta” Institute of Oncology, 34–36 Republicii Street, 400015 Cluj-Napoca, Romania
| | - Anca Simona Bojan
- Faculty of Medicine, University of Medicine and Pharmacy “Iuliu Hatieganu”, 8 Victor Babes Street, 400012 Cluj-Napoca, Romania; (I.M.); (M.T.Z.); (A.S.B.); (C.I.T.); (D.C.)
- Department of Haematology, “Ion Chiricuta” Institute of Oncology, 34–36 Republicii Street, 400015 Cluj-Napoca, Romania
| | - Ciprian Ionuț Tomuleasa
- Faculty of Medicine, University of Medicine and Pharmacy “Iuliu Hatieganu”, 8 Victor Babes Street, 400012 Cluj-Napoca, Romania; (I.M.); (M.T.Z.); (A.S.B.); (C.I.T.); (D.C.)
- Department of Haematology, “Ion Chiricuta” Institute of Oncology, 34–36 Republicii Street, 400015 Cluj-Napoca, Romania
- MEDFUTURE—Research Centre for Advanced Medicine, 8 Louis Pasteur Street, 400347 Cluj-Napoca, Romania
| | - Diana Cenariu
- Faculty of Medicine, University of Medicine and Pharmacy “Iuliu Hatieganu”, 8 Victor Babes Street, 400012 Cluj-Napoca, Romania; (I.M.); (M.T.Z.); (A.S.B.); (C.I.T.); (D.C.)
- MEDFUTURE—Research Centre for Advanced Medicine, 8 Louis Pasteur Street, 400347 Cluj-Napoca, Romania
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9
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Liu C, Wang L, Liu Z. Quantification and visualization of cis-regulatory dynamics in single-cell multi-omics data with TREASMO. NAR Genom Bioinform 2024; 6:lqae007. [PMID: 38312937 PMCID: PMC10836941 DOI: 10.1093/nargab/lqae007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 11/21/2023] [Accepted: 01/31/2024] [Indexed: 02/06/2024] Open
Abstract
Recent advances in single-cell multi-omics technologies have provided unprecedented insights into regulatory processes. We introduce TREASMO, a versatile Python package designed to quantify and visualize transcriptional regulatory dynamics in single-cell multi-omics datasets. TREASMO has four modules, spanning data preparation, correlation quantification, downstream analysis and visualization, enabling comprehensive dataset exploration. By introducing a novel single-cell gene-peak correlation strength index, TREASMO facilitates accurate identification of regulatory changes at single-cell resolution. Validation on a hematopoietic stem and progenitor cell dataset showcases TREASMO's capacity in quantifying the gene-peak correlation strength at the single-cell level, identifying regulatory markers and discovering temporal regulatory patterns along the trajectory.
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Affiliation(s)
- Chaozhong Liu
- Graduate Program in Quantitative and Computational Biosciences, Baylor College of Medicine, Houston, TX 77030, USA
| | - Linhua Wang
- Graduate Program in Quantitative and Computational Biosciences, Baylor College of Medicine, Houston, TX 77030, USA
| | - Zhandong Liu
- Jan and Dan Duncan Neurological Research Institute at Texas Children's Hospital, Houston, TX 77030, USA
- Department of Pediatrics, Baylor College of Medicine, Houston,TX 77030, USA
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Xie L, Tao Y, Shen Z, Deng H, Duan X, Xue Y, Chen D, Li Y. Congenital asplenia impairs heme-iron recycling during erythropoiesis in zebrafish. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2024; 151:105108. [PMID: 38040044 DOI: 10.1016/j.dci.2023.105108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 11/13/2023] [Accepted: 11/26/2023] [Indexed: 12/03/2023]
Abstract
The spleen is postulated to be a hematopoietic tissue in adult fish; however, clear evidence is still lacking to define its role in hematopoietic activity. In our previous study, a congenitally asplenic zebrafish was generated though gene editing, which provided a new perspective for studying the role of fish spleen in hematopoiesis. In this study, HSC-regulated and erythrocyte marker genes, such as gata1a, gata2, klf1, hbaa1, hbaa2, hbba1 and hbba2 were significantly reduced in congenitally asplenic zebrafish when compared with wild-type (WT). Subsequently, we conducted the transcriptome profiles of whole kidneys from WT and congenitally asplenic zebrafish to explore the possible molecular mechanisms underlying the impaired erythropoiesis caused by congenital asplenia. Our results demonstrated that congenital asplenia might impair heme-iron recycling during erythropoiesis, as evidenced by significant down-regulation of genes associated with iron acquisition (tfr1a, tfa, steap3 and slc25a37) and heme biosynthesis and transport (alas2, fech, uros, urod, copx, ppox and abcb10) in congenitally asplenic zebrafish. In addition, the down-regulation of hemopoiesis-related GO terms, including heme binding, tetrapyrrole binding, iron ion binding, heme metabolic process, heme biosynthetic process, erythrocyte differentiation, iron ion homeostasis and hemoglobin metabolic process confirmed the impaired erythropoiesis induced by congenital asplenia. Our study provides an in-depth understanding of spleen function in regulating heme-iron homeostasis during hematopoiesis, thereby providing valuable insights into pathological responses in splenectomized or congenitally asplenic patients.
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Affiliation(s)
- Lang Xie
- National Agricultural Science Observing and Experimental Station of Chongqing, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Science, Wuhan, Hubei, 430223, China; Aquaculture Engineering Technology Research Center of Southwest University, College of Fisheries, Southwest University, Chongqing, 400715, China
| | - Yixi Tao
- Aquaculture Engineering Technology Research Center of Southwest University, College of Fisheries, Southwest University, Chongqing, 400715, China
| | - Ziwei Shen
- National Agricultural Science Observing and Experimental Station of Chongqing, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Science, Wuhan, Hubei, 430223, China
| | - Huatang Deng
- National Agricultural Science Observing and Experimental Station of Chongqing, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Science, Wuhan, Hubei, 430223, China
| | - Xinbin Duan
- National Agricultural Science Observing and Experimental Station of Chongqing, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Science, Wuhan, Hubei, 430223, China
| | - Yang Xue
- Chongqing Fisheries Technical Extension Center, Chongqing, 400020, China
| | - Daqing Chen
- National Agricultural Science Observing and Experimental Station of Chongqing, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Science, Wuhan, Hubei, 430223, China
| | - Yun Li
- Aquaculture Engineering Technology Research Center of Southwest University, College of Fisheries, Southwest University, Chongqing, 400715, China.
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Detomas M, Deutschbein T, Tamburello M, Chifu I, Kimpel O, Sbiera S, Kroiss M, Fassnacht M, Altieri B. Erythropoiesis in Cushing syndrome: sex-related and subtype-specific differences. Results from a monocentric study. J Endocrinol Invest 2024; 47:101-113. [PMID: 37314685 PMCID: PMC10776705 DOI: 10.1007/s40618-023-02128-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 05/31/2023] [Indexed: 06/15/2023]
Abstract
CONTEXT Cushing syndrome (CS) is associated with different hematological abnormalities. Nevertheless, conflicting data about erythropoiesis in CS have been reported. Furthermore, it is unclear whether CS sex and subtype-specific alterations in red blood cells (RBC) parameters are present. OBJECTIVE To investigate sex and subtype-specific changes in RBC in patients with CS at initial diagnosis and after remission. DESIGN Retrospective, monocentric study including 210 patients with CS (women, n = 162) matched 1:1 for sex and age to patients with pituitary microadenomas or adrenal incidentalomas (both hormonally inactive). RBC parameters were evaluated at initial diagnosis and after remission. RESULTS Women with CS had higher hematocrit (median 42.2 vs 39.7%), hemoglobin (14.1 vs 13.4 g/dl) and mean corpuscular volume (MCV) (91.2 vs 87.9 fl) compared to the controls (all p < 0.0001). Women with Cushing disease (CD) showed higher hematocrit, RBC and hemoglobin levels than those with ectopic Cushing (ECS) (all p < 0.005). Men with CS had lower hematocrit (42.9 vs 44.7%), RBC count (4.8 vs 5.1n*106/µl) and hemoglobin (14.2 vs 15.4 g/dl), but higher MCV (90.8 vs 87.5 fl) than controls (all p < 0.05). In men with CS, no subtype-specific differences were identified. Three months after remission hemoglobin decreased in both sexes. CONCLUSION CS is characterized by sexual and subtype-specific differences in RBC parameters. Compared to controls, women with CS showed higher hematocrit/hemoglobin levels, whereas men had lower hematocrit/hemoglobin, which further decreased directly after remission. Therefore, anemia should be considered as complication of CS in men. In women, differences in RBC parameters may help to differentiate CD from ECS.
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Affiliation(s)
- M Detomas
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital Würzburg, University of Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany.
| | - T Deutschbein
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital Würzburg, University of Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany
- Medicover Oldenburg MVZ, Oldenburg, Germany
| | - M Tamburello
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital Würzburg, University of Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, 25124, Brescia, Italy
| | - I Chifu
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital Würzburg, University of Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany
| | - O Kimpel
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital Würzburg, University of Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany
| | - S Sbiera
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital Würzburg, University of Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany
| | - M Kroiss
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital Würzburg, University of Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany
- Department of Internal Medicine IV, University Hospital Munich, Ludwig-Maximilians-Universität München, Munich, Germany
| | - M Fassnacht
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital Würzburg, University of Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany
- Central Laboratory, University Hospital Würzburg, Würzburg, Germany
| | - B Altieri
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital Würzburg, University of Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany
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12
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Hewitt KJ. Core transcription balancing erythropoiesis. Blood 2023; 142:2130-2131. [PMID: 38127413 DOI: 10.1182/blood.2023022304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023] Open
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13
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Fu Y, Li Z, Lin W, Yao J, Jiang X, Shu Q, Mao X, Tu J, Liang X, Li L. Extramedullary hematopoiesis contributes to enhanced erythropoiesis during pregnancy via TGF-β signaling. Front Immunol 2023; 14:1295717. [PMID: 38045690 PMCID: PMC10693449 DOI: 10.3389/fimmu.2023.1295717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 11/06/2023] [Indexed: 12/05/2023] Open
Abstract
Red blood cells are the predominant cellular component in human body, and their numbers increase significantly during pregnancy due to heightened erythropoiesis. CD71+ erythroid cells (CECs) are immature red blood cells, encompassing erythroblasts and reticulocytes, constitute a rare cell population primarily found in the bone marrow, although they are physiologically enriched in the neonatal mouse spleen and human cord blood. Presently, the mechanisms underlying the CECs expansion during pregnancy remain largely unexplored. Additionally, the mechanisms and roles associated with extramedullary hematopoiesis (EMH) of erythroid cells during pregnancy have yet to be fully elucidated. In this study, our objective was to examine the underlying mechanisms of erythroid-biased hematopoiesis during pregnancy. Our findings revealed heightened erythropoiesis and elevated CECs in both human and mouse pregnancies. The increased presence of transforming growth factor (TGF)-β during pregnancy facilitated the differentiation of CD34+ hematopoietic stem and progenitor cells (HSPCs) into CECs, without impacting HSPCs proliferation, ultimately leading to enhanced erythropoiesis. The observed increase in CECs during pregnancy was primarily attributed to EMH occurring in the spleen. During mouse pregnancy, splenic stromal cells were found to have a significant impact on splenic erythropoiesis through the activation of TGF-β signaling. Conversely, splenic macrophages were observed to contribute to extramedullary erythropoiesis in a TGF-β-independent manner. Our results suggest that splenic stromal cells play a crucial role in promoting extramedullary erythropoiesis and the production of CECs during pregnancy, primarily through TGF-β-dependent mechanisms.
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Affiliation(s)
- Yao Fu
- Department of Obstetrics, Shenzhen People’s Hospital, The Second Clinical Medical College, Jinan University, Shenzhen, China
- Post-doctoral Scientific Research Station of Clinical Medicine, Jinan University, Guangzhou, China
- Department of Obstetrics, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Zhengjuan Li
- South China University of Technology School of Medicine, Guangzhou, China
| | - Wen Lin
- South China University of Technology School of Medicine, Guangzhou, China
| | - Jingxin Yao
- Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Xiang Jiang
- Department of Obstetrics, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Qun Shu
- Department of Obstetrics, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiaoyuan Mao
- Department of Obstetrics, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jiaoqin Tu
- Department of Obstetrics and Gynecology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Xinyuan Liang
- Department of Obstetrics, Shenzhen People’s Hospital, The Second Clinical Medical College, Jinan University, Shenzhen, China
- Post-doctoral Scientific Research Station of Clinical Medicine, Jinan University, Guangzhou, China
- Department of Obstetrics, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Liping Li
- Department of Obstetrics, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
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14
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Zhang S, Mei Y, Zhao B. Editorial: New insights into dyserythropoiesis: from pathophysiology, molecular mechanisms to treatments for erythroid disorders. Front Cell Dev Biol 2023; 11:1321170. [PMID: 38020925 PMCID: PMC10653385 DOI: 10.3389/fcell.2023.1321170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 10/20/2023] [Indexed: 12/01/2023] Open
Affiliation(s)
- Shujing Zhang
- Key Laboratory of Chemical Biology, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Ministry of Education, Shandong University, Jinan, China
- NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Ministry of Education, Shandong University, Jinan, Shandong, China
- Department of Pharmacology, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Ministry of Education, Shandong University, Jinan, China
| | - Yang Mei
- Key Laboratory of Medical Virology, School of Biomedical Sciences, Hunan University, Changsha, China
| | - Baobing Zhao
- Key Laboratory of Chemical Biology, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Ministry of Education, Shandong University, Jinan, China
- NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Ministry of Education, Shandong University, Jinan, Shandong, China
- Department of Pharmacology, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Ministry of Education, Shandong University, Jinan, China
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15
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Myers G, Wang Y, Wang Q, Friedman A, Sanchez-Martinez A, Liu X, Sharon SA, Lim KC, Khoriaty R, Engel JD, Yu L. Murine erythroid differentiation kinetics in vivo under normal and anemic stress conditions. Blood Adv 2023; 7:5727-5732. [PMID: 37552129 PMCID: PMC10539864 DOI: 10.1182/bloodadvances.2023010088] [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: 02/28/2023] [Revised: 07/10/2023] [Accepted: 08/01/2023] [Indexed: 08/09/2023] Open
Abstract
Our current understanding of the kinetics and dynamics of erythroid differentiation is based almost entirely on the ex vivo expansion of cultured hematopoietic progenitor cells. In this study, we used an erythroid-specific, inducible transgenic mouse line to investigate for the first time, the in vivo erythroid differentiation kinetics under steady-state conditions. We demonstrated that bipotent premegakaroycyte/erythroid (PreMegE) progenitor cells differentiate into erythroid-committed proerythroblast/basophilic erythroblasts (ProBasoE) after 6.6 days under steady-state conditions. During this process, each differentiation phase (from PreMegE to precolony forming unit-erythroid [PreCFU-E], PreCFU-E to CFU-E, and CFU-E to ProBasoE) took ∼2 days in vivo. Upon challenge with 5-flurouracil (5-FU), which leads to the induction of stress erythropoiesis, erythroid maturation time was reduced from 6.6 to 4.7 days. Furthermore, anemia induced in 5-FU-treated mice was shown to be due not only to depleted bone marrow erythroid progenitor stores but also to a block in reticulocyte exit from the bone marrow into the circulation, which differed from the mechanism induced by acute blood loss.
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Affiliation(s)
- Greggory Myers
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI
| | - Yu Wang
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI
| | - Qing Wang
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI
| | - Ann Friedman
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI
| | | | - Xiaofang Liu
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI
| | - Singh A. Sharon
- Department of Pediatrics, University of Michigan Medical School, Ann Arbor, MI
| | - Kim-Chew Lim
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI
| | - Rami Khoriaty
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI
- Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI
| | - James Douglas Engel
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI
- Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI
| | - Lei Yu
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI
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16
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Liu H, Tsai H, Yang M, Li G, Bian Q, Ding G, Wu D, Dai J. Three-dimensional genome structure and function. MedComm (Beijing) 2023; 4:e326. [PMID: 37426677 PMCID: PMC10329473 DOI: 10.1002/mco2.326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 05/31/2023] [Accepted: 06/09/2023] [Indexed: 07/11/2023] Open
Abstract
Linear DNA undergoes a series of compression and folding events, forming various three-dimensional (3D) structural units in mammalian cells, including chromosomal territory, compartment, topologically associating domain, and chromatin loop. These structures play crucial roles in regulating gene expression, cell differentiation, and disease progression. Deciphering the principles underlying 3D genome folding and the molecular mechanisms governing cell fate determination remains a challenge. With advancements in high-throughput sequencing and imaging techniques, the hierarchical organization and functional roles of higher-order chromatin structures have been gradually illuminated. This review systematically discussed the structural hierarchy of the 3D genome, the effects and mechanisms of cis-regulatory elements interaction in the 3D genome for regulating spatiotemporally specific gene expression, the roles and mechanisms of dynamic changes in 3D chromatin conformation during embryonic development, and the pathological mechanisms of diseases such as congenital developmental abnormalities and cancer, which are attributed to alterations in 3D genome organization and aberrations in key structural proteins. Finally, prospects were made for the research about 3D genome structure, function, and genetic intervention, and the roles in disease development, prevention, and treatment, which may offer some clues for precise diagnosis and treatment of related diseases.
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Affiliation(s)
- Hao Liu
- Department of Oral and Cranio‐Maxillofacial SurgeryShanghai Ninth People's Hospital, Shanghai Jiao Tong University School of MedicineCollege of Stomatology, Shanghai Jiao Tong UniversityNational Center for StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyShanghaiChina
- School of StomatologyWeifang Medical UniversityWeifangChina
| | - Hsiangyu Tsai
- Department of Oral and Cranio‐Maxillofacial SurgeryShanghai Ninth People's Hospital, Shanghai Jiao Tong University School of MedicineCollege of Stomatology, Shanghai Jiao Tong UniversityNational Center for StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyShanghaiChina
| | - Maoquan Yang
- School of Clinical MedicineWeifang Medical UniversityWeifangChina
| | - Guozhi Li
- Department of Oral and Cranio‐Maxillofacial SurgeryShanghai Ninth People's Hospital, Shanghai Jiao Tong University School of MedicineCollege of Stomatology, Shanghai Jiao Tong UniversityNational Center for StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyShanghaiChina
| | - Qian Bian
- Shanghai Institute of Precision MedicineShanghaiChina
| | - Gang Ding
- School of StomatologyWeifang Medical UniversityWeifangChina
| | - Dandan Wu
- Department of Oral and Cranio‐Maxillofacial SurgeryShanghai Ninth People's Hospital, Shanghai Jiao Tong University School of MedicineCollege of Stomatology, Shanghai Jiao Tong UniversityNational Center for StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyShanghaiChina
| | - Jiewen Dai
- Department of Oral and Cranio‐Maxillofacial SurgeryShanghai Ninth People's Hospital, Shanghai Jiao Tong University School of MedicineCollege of Stomatology, Shanghai Jiao Tong UniversityNational Center for StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyShanghaiChina
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17
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Banerjee S, Datta R. Localized Leishmania major infection disrupts systemic iron homeostasis that can be controlled by oral iron supplementation. J Biol Chem 2023; 299:105064. [PMID: 37468101 PMCID: PMC10448173 DOI: 10.1016/j.jbc.2023.105064] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 07/08/2023] [Accepted: 07/11/2023] [Indexed: 07/21/2023] Open
Abstract
Leishmania parasites are heavily dependent on efficient iron acquisition from a tightly regulated host iron pool for survival and virulence. Prior studies uncovered multiple strategies adopted by the parasite to hijack the iron-regulatory network of macrophages. Despite these extensive studies with infected macrophages, there is limited knowledge of the effect of Leishmania infection on systemic iron homeostasis. This issue is particularly relevant for Leishmania major, which causes localized skin infection with minimal lymphatic spread. We show for the first time that L. major infection in the mouse footpad induced influx of iron at the site of infection through blood with simultaneous upregulation of transferrin receptor 1 and downregulation of phagolysosomal iron exporter Nramp1 expression in the footpad tissue. Interestingly, localized L. major infection had far-reaching effects beyond the infection site triggering anemia-like symptoms. This was evident from depleted physiological iron stores from the liver and bone marrow as well as reduced hemoglobin levels and deformed erythrocytes. The infected mice also developed splenomegaly with signs of splenic stress erythropoiesis as indicated by upregulation of several erythroid-related genes. These observations prompted us to provide oral iron supplementations to the L. major-infected mice, which resulted in a drastic reduction of the parasite load and restoration of iron homeostasis.
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Affiliation(s)
- Sourav Banerjee
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, West Bengal, India
| | - Rupak Datta
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, West Bengal, India.
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18
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Schippel N, Sharma S. Dynamics of human hematopoietic stem and progenitor cell differentiation to the erythroid lineage. Exp Hematol 2023; 123:1-17. [PMID: 37172755 PMCID: PMC10330572 DOI: 10.1016/j.exphem.2023.05.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 05/04/2023] [Accepted: 05/07/2023] [Indexed: 05/15/2023]
Abstract
Erythropoiesis, the development of erythrocytes from hematopoietic stem cells, occurs through four phases: erythroid progenitor (EP) development, early erythropoiesis, terminal erythroid differentiation (TED), and maturation. According to the classical model that is based on immunophenotypic profiles of cell populations, each of these phases comprises multiple differentiation states that arise in a hierarchical manner. After segregation of lymphoid potential, erythroid priming begins during progenitor development and progresses through progenitor cell types that have multilineage potential. Complete separation of the erythroid lineage is achieved during early erythropoiesis with the formation of unipotent EPs: burst-forming unit-erythroid and colony-forming unit-erythroid. These erythroid-committed progenitors undergo TED and maturation, which involves expulsion of the nucleus and remodeling to form functional biconcave, hemoglobin-filled erythrocytes. In the last decade or so, many studies employing advanced techniques such as single-cell RNA-sequencing (scRNA-seq) as well as the conventional methods, including colony-forming cell assays and immunophenotyping, have revealed heterogeneity within the stem, progenitor, and erythroblast stages, and uncovered alternate paths for segregation of erythroid lineage potential. In this review, we provide an in-depth account of immunophenotypic profiles of all cell types within erythropoiesis, highlight studies that demonstrate heterogeneous erythroid stages, and describe deviations to the classical model of erythropoiesis. Overall, although scRNA-seq approaches have provided new insights, flow cytometry remains relevant and is the primary method for validation of novel immunophenotypes.
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Affiliation(s)
- Natascha Schippel
- Department of Basic Medical Sciences, College of Medicine-Phoenix, University of Arizona, Phoenix, AZ
| | - Shalini Sharma
- Department of Basic Medical Sciences, College of Medicine-Phoenix, University of Arizona, Phoenix, AZ.
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19
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Azad P, Zhou D, Tu HC, Villafuerte FC, Traver D, Rana TM, Haddad GG. Long noncoding RNA HIKER regulates erythropoiesis in Monge's disease via CSNK2B. J Clin Invest 2023; 133:e165831. [PMID: 37022795 PMCID: PMC10231995 DOI: 10.1172/jci165831] [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: 09/28/2022] [Accepted: 04/04/2023] [Indexed: 04/07/2023] Open
Abstract
Excessive erythrocytosis (EE) is a major hallmark of patients suffering from chronic mountain sickness (CMS, also known as Monge's disease) and is responsible for major morbidity and even mortality in early adulthood. We took advantage of unique populations, one living at high altitude (Peru) showing EE, with another population, at the same altitude and region, showing no evidence of EE (non-CMS). Through RNA-Seq, we identified and validated the function of a group of long noncoding RNAs (lncRNAs) that regulate erythropoiesis in Monge's disease, but not in the non-CMS population. Among these lncRNAs is hypoxia induced kinase-mediated erythropoietic regulator (HIKER)/LINC02228, which we showed plays a critical role in erythropoiesis in CMS cells. Under hypoxia, HIKER modulated CSNK2B (the regulatory subunit of casein kinase 2). A downregulation of HIKER downregulated CSNK2B, remarkably reducing erythropoiesis; furthermore, an upregulation of CSNK2B on the background of HIKER downregulation rescued erythropoiesis defects. Pharmacologic inhibition of CSNK2B drastically reduced erythroid colonies, and knockdown of CSNK2B in zebrafish led to a defect in hemoglobinization. We conclude that HIKER regulates erythropoiesis in Monge's disease and acts through at least one specific target, CSNK2B, a casein kinase.
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Affiliation(s)
- Priti Azad
- Division of Respiratory Medicine, Department of Pediatrics, and
| | - Dan Zhou
- Division of Respiratory Medicine, Department of Pediatrics, and
| | - Hung-Chi Tu
- Department of Cell and Developmental Biology, UCSD, La Jolla, California, USA
| | - Francisco C. Villafuerte
- Oxygen Transport Physiology Laboratory/Comparative Physiology, Faculty of Sciences and Philosophy, Cayetano Heredia University, Lima, Peru
| | - David Traver
- Department of Cell and Developmental Biology, UCSD, La Jolla, California, USA
| | - Tariq M. Rana
- Division of Genetics, Department of Pediatrics, Program in Immunology, Institute for Genomic Medicine, and
| | - Gabriel G. Haddad
- Division of Respiratory Medicine, Department of Pediatrics, and
- Department of Neurosciences, UCSD, La Jolla, California, USA
- Rady Children’s Hospital, San Diego, California, USA
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20
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In Vitro Human Haematopoietic Stem Cell Expansion and Differentiation. Cells 2023; 12:cells12060896. [PMID: 36980237 PMCID: PMC10046976 DOI: 10.3390/cells12060896] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 03/08/2023] [Accepted: 03/09/2023] [Indexed: 03/17/2023] Open
Abstract
The haematopoietic system plays an essential role in our health and survival. It is comprised of a range of mature blood and immune cell types, including oxygen-carrying erythrocytes, platelet-producing megakaryocytes and infection-fighting myeloid and lymphoid cells. Self-renewing multipotent haematopoietic stem cells (HSCs) and a range of intermediate haematopoietic progenitor cell types differentiate into these mature cell types to continuously support haematopoietic system homeostasis throughout life. This process of haematopoiesis is tightly regulated in vivo and primarily takes place in the bone marrow. Over the years, a range of in vitro culture systems have been developed, either to expand haematopoietic stem and progenitor cells or to differentiate them into the various haematopoietic lineages, based on the use of recombinant cytokines, co-culture systems and/or small molecules. These approaches provide important tractable models to study human haematopoiesis in vitro. Additionally, haematopoietic cell culture systems are being developed and clinical tested as a source of cell products for transplantation and transfusion medicine. This review discusses the in vitro culture protocols for human HSC expansion and differentiation, and summarises the key factors involved in these biological processes.
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21
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Heterochromatin rewiring and domain disruption-mediated chromatin compaction during erythropoiesis. Nat Struct Mol Biol 2023; 30:463-474. [PMID: 36914797 DOI: 10.1038/s41594-023-00939-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 02/08/2023] [Indexed: 03/16/2023]
Abstract
Mammalian erythropoiesis involves progressive chromatin compaction and subsequent enucleation in terminal differentiation, but the mechanisms underlying the three-dimensional chromatin reorganization remain obscure. Here, we systematically analyze the higher-order chromatin in purified populations of primary human erythroblasts. Our results reveal that heterochromatin regions undergo substantial compression, with H3K9me3 markers relocalizing to the nuclear periphery and forming a significant number of long-range interactions, and that ~58% of the topologically associating domain (TAD) boundaries are disrupted, while certain TADs enriched for markers of the active transcription state and erythroid master regulators, GATA1 and KLF1, are selectively maintained during terminal erythropoiesis. Finally, we demonstrate that GATA1 is involved in safeguarding selected essential chromatin domains during terminal erythropoiesis. Our study therefore delineates the molecular characteristics of a development-driven chromatin compaction process, which reveals transcription competence as a key indicator of the selected domain maintenance to ensure appropriate gene expression during the extreme compaction of chromatin.
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22
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Decoding transcriptional regulation via a human gene expression predictor. J Genet Genomics 2023; 50:305-317. [PMID: 36693565 DOI: 10.1016/j.jgg.2023.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 01/04/2023] [Accepted: 01/10/2023] [Indexed: 01/22/2023]
Abstract
Transcription factors (TFs) regulate cellular activities by controlling gene expression, but a predictive model describing how TFs quantitatively modulate human transcriptomes is lacking. We construct a universal human gene expression predictor and utilize it to decode transcriptional regulation. Using the expression of 1613 TFs, the predictor reconstitutes highly accurate transcriptomes for samples derived from a wide range of tissues and conditions. The broad applicability of the predictor indicates that it recapitulates the quantitative relationships between TFs and target genes ubiquitous across tissues. Significant interacting TF-target gene pairs are extracted from the predictor and enable downstream inference of TF regulators for diverse pathways involved in development, immunity, metabolism, and stress response. A detailed analysis of the hematopoiesis process reveals an atlas of key TFs regulating the development of different hematopoietic cell lineages, and a portion of these TFs are conserved between humans and mice. The results demonstrate that our method is capable of delineating the TFs responsible for fate determination. Compared to other existing tools, our approach shows better performance in recovering the correct TF regulators. Thus, we present a novel approach that can be used to study human transcriptional regulation in general.
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23
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Alcicek FC, Blat A, Rutkowska W, Bulat K, Szczesny-Malysiak E, Franczyk-Zarow M, Kostogrys R, Dybas J, Marzec KM. Secondary structure alterations of RBC assessed by FTIR-ATR in correlation to 2,3-DPG levels in ApoE/LDLR -/- Mice. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 284:121819. [PMID: 36084582 DOI: 10.1016/j.saa.2022.121819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 08/12/2022] [Accepted: 08/29/2022] [Indexed: 06/15/2023]
Abstract
In the present study, we characterized the secondary structure alterations of intact red blood cells (RBCs) cytosol with special attention to the sex-related alterations in 8- and 24-week-old female and male ApoE/LDLR-/- mice, compared to age-matched female and male C57BL/6J control animals. Results were obtained with previously established methodology based on Fourier transform infrared spectroscopy-attenuated total reflectance (FTIR-ATR). Additionally, we evaluated 2,3-DPG levels in the RBCs and showed its potential link to the hemoglobin (Hb) secondary structure alterations. Considering Hb structure alterations probed by FTIR-ATR, the ratio of turns to α-helices in 8-week-old ApoE/LDLR-/- mice suggested more pronounced secondary structure alterations within the RBCs than in the age-matched control. Sex-related differences were observed solely in 24-week-old male ApoE/LDLR-/- mice, which showed statistically significant increase in the secondary structure alterations compared to 24-week-old female ApoE/LDLR-/- mice. Similar to the secondary structure alterations, no sex-related differences were observed in the levels of 2,3-DPG in RBCs, except for 24-week-old male ApoE/LDLR-/- mice, which showed significantly higher levels compared to the age-matched female ApoE/LDLR-/- mice. Considering the age-related alterations, we observed significant increases in the intracellular 2,3-DPG of RBCs with animals' age in all studied groups, except for female ApoE/LDLR-/- mice, where a significant difference was not reported. This suggests the clear correlation between secondary structure of Hb alterations and 2,3-DPG levels for male and female murine RBC and proves a higher resistance of older female RBCs to the secondary structure changes with progression of atherosclerosis. Moreover, it may be concluded that higher 2,3-DPG levels in RBCs occurred in response to the secondary structure alterations of Hb in ApoE/LDLR-/- mice.
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Affiliation(s)
- Fatih Celal Alcicek
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego St., 30-348 Krakow, Poland
| | - Aneta Blat
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego St., 30-348 Krakow, Poland; Faculty of Chemistry, Jagiellonian University, 2 Gronostajowa St., 30-387 Krakow, Poland
| | - Wiktoria Rutkowska
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego St., 30-348 Krakow, Poland; Faculty of Chemistry, Jagiellonian University, 2 Gronostajowa St., 30-387 Krakow, Poland
| | - Katarzyna Bulat
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego St., 30-348 Krakow, Poland; Łukasiewicz Research Network, Krakow Institute of Technology, 73 Zakopianska St., 30-418 Krakow, Poland
| | - Ewa Szczesny-Malysiak
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego St., 30-348 Krakow, Poland
| | - Magdalena Franczyk-Zarow
- Department of Human Nutrition and Dietetics, Faculty of Food Technology, University of Agriculture, 122 Balicka St., 30-149 Krakow, Poland
| | - Renata Kostogrys
- Department of Human Nutrition and Dietetics, Faculty of Food Technology, University of Agriculture, 122 Balicka St., 30-149 Krakow, Poland
| | - Jakub Dybas
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego St., 30-348 Krakow, Poland.
| | - Katarzyna M Marzec
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego St., 30-348 Krakow, Poland; Łukasiewicz Research Network, Krakow Institute of Technology, 73 Zakopianska St., 30-418 Krakow, Poland.
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24
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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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25
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Luo P, Liu X, Tang Z, Xiong B. Decreased expression of HBA1 and HBB genes in acute myeloid leukemia patients and their inhibitory effects on growth of K562 cells. Hematology 2022; 27:1003-1009. [DOI: 10.1080/16078454.2022.2117186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Ping Luo
- Department of Hematology, Zhongnan Hospital of Wuhan University, Wuhan, People’s Republic of China
| | - Xiaoyan Liu
- Department of Hematology, Zhongnan Hospital of Wuhan University, Wuhan, People’s Republic of China
| | - Zehai Tang
- Department of Emergency, The Union Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Bei Xiong
- Department of Hematology, Zhongnan Hospital of Wuhan University, Wuhan, People’s Republic of China
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26
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Teryaeva NB, Kvan OK, Gadjieva OA, Bashiryan BA. Dynamic laboratory control of iron deficiency correction in neurosurgical patients. RUSSIAN JOURNAL OF HEMATOLOGY AND TRANSFUSIOLOGY 2022. [DOI: 10.35754/0234-5730-2022-67-4-500-509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Introduction. The concept of blood management in relation to the surgical treatment of surgical diseases recommends the correction of iron defi ciency anemia (IDA) at the prehospital stage. However, surgery is often performed for emergency indications, making it necessary to carry out treatment as soon as possible.Aim – to evaluate the possibilities of using delta hemoglobin (Delta-He) to monitor the effectiveness of IDA therapy in neurosurgical patients at the prehospital stage to reduce the time required to prepare patients for hospitalization.Materials and methods. A total of 42 patients were treated with high-dose iron preparations (iron [III] carboxymaltosate and iron [III] hydroxide oligoisomaltosate). During the treatment, the dynamics of the number of reticulocytes and the values of the hemoglobin delta were evaluated. Data are presented as median (IQR).Results. Treatment with high-dose iron preparations led to an increase in Delta-He values starting from days 1–2. Significant changes were recorded by days 3–4 from the start of therapy: from 2.2 (0.3–4.9) pg to 15.5 (13.8–10) pg on day 7. These changes were 2–3 days ahead of the increase in the number of reticulocytes in the corresponding blood samples: the number of reticulocytes significantly increased by days 5–6 from the start of treatment.Conclusion. The use of high-dose preparations of iron [III] carboxymaltosate and iron [III] hydroxide oligoisomaltosate in the form of infusion made it possible to prepare neurosurgical patients for hospitalization within a week. None of the patients required transfusion of erythrocyte-containing components of donated blood at any stage of surgical treatment. The ability to focus on Delta-He values instead of the number of reticulocytes during iron therapy made it possible to shorten the waiting period for the effect of drug exposure by 2–3 days.
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Affiliation(s)
- N. B. Teryaeva
- N.N. Burdenko National Medical Research Center of Neurosurgery
| | - O. K. Kvan
- N.N. Burdenko National Medical Research Center of Neurosurgery
| | - O. A. Gadjieva
- N.N. Burdenko National Medical Research Center of Neurosurgery
| | - B. A. Bashiryan
- N.N. Burdenko National Medical Research Center of Neurosurgery
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27
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Forester CM, Oses-Prieto JA, Phillips NJ, Miglani S, Pang X, Byeon GW, DeMarco R, Burlingame A, Barna M, Ruggero D. Regulation of eIF4E guides a unique translational program to control erythroid maturation. SCIENCE ADVANCES 2022; 8:eadd3942. [PMID: 36563140 PMCID: PMC9788769 DOI: 10.1126/sciadv.add3942] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 11/22/2022] [Indexed: 05/22/2023]
Abstract
Translation control is essential in balancing hematopoietic precursors and differentiation; however, the mechanisms underlying this program are poorly understood. We found that the activity of the major cap-binding protein eIF4E is unexpectedly regulated in a dynamic manner throughout erythropoiesis that is uncoupled from global protein synthesis rates. Moreover, eIF4E activity directs erythroid maturation, and increased eIF4E expression maintains cells in an early erythroid state associated with a translation program driving the expression of PTPN6 and Igf2bp1. A cytosine-enriched motif in the 5' untranslated region is important for eIF4E-mediated translation specificity. Therefore, selective translation of key target genes necessary for the maintenance of early erythroid states by eIF4E highlights a unique mechanism used by hematopoietic precursors to rapidly elicit erythropoietic maturation upon need.
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Affiliation(s)
- Craig M. Forester
- Department of Pediatrics, University of Colorado, Denver, CO 80045, USA
- Division of Pediatric Hematology/Oncology/Bone Marrow Transplant, Children’s Hospital Colorado, University of Colorado-Anschutz Medical Campus, Aurora, CO 80045, USA
- Department of Urology, University of California, San Francisco, San Francisco, CA, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco (UCSF), San Francisco, CA 94158, USA
| | - Juan A. Oses-Prieto
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Nancy J. Phillips
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Sohit Miglani
- Department of Urology, University of California, San Francisco, San Francisco, CA, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco (UCSF), San Francisco, CA 94158, USA
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
- Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA, USA
| | - Xiaming Pang
- Department of Urology, University of California, San Francisco, San Francisco, CA, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco (UCSF), San Francisco, CA 94158, USA
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Gun Woo Byeon
- Department of Genetics, Stanford University School of Medicine, Stanford, CA 94309, USA
| | - Rachel DeMarco
- Department of Pediatrics, University of Colorado, Denver, CO 80045, USA
| | - Al Burlingame
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Maria Barna
- Department of Genetics, Stanford University School of Medicine, Stanford, CA 94309, USA
| | - Davide Ruggero
- Department of Urology, University of California, San Francisco, San Francisco, CA, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco (UCSF), San Francisco, CA 94158, USA
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
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28
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Cappellini MD, Taher AT, Verma A, Shah F, Hermine O. Erythropoiesis in lower-risk myelodysplastic syndromes and beta-thalassemia. Blood Rev 2022; 59:101039. [PMID: 36577601 DOI: 10.1016/j.blre.2022.101039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 12/15/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
The hematologic disorders myelodysplastic syndromes and beta-thalassemia are characterized by ineffective erythropoiesis and anemia, often managed with regular blood transfusions. Erythropoiesis, the process by which sufficient numbers of functional erythrocytes are produced from hematopoietic stem cells, is highly regulated, and defects can negatively affect the proliferation, differentiation, and survival of erythroid precursors. Treatments that directly target the underlying mechanisms of ineffective erythropoiesis are limited, and management of anemia with regular blood transfusions imposes a significant burden on patients, caregivers, and health care systems. There is therefore a strong unmet need for treatments that can restore effective erythropoiesis. Novel therapies are beginning to address this need by targeting a variety of mechanisms underlying erythropoiesis. Herein, we provide an overview of the role of ineffective erythropoiesis in myelodysplastic syndromes and beta-thalassemia, discuss unmet needs in targeting ineffective erythropoiesis, and describe current management strategies and emerging treatments for these disorders.
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Affiliation(s)
| | - Ali T Taher
- Department of Internal Medicine, American University of Beirut Medical Center, Halim and Aida Daniel Academic and Clinical Center, Beirut, Lebanon.
| | - Amit Verma
- Albert Einstein College of Medicine, New York, NY, USA.
| | - Farrukh Shah
- Department of Haematology, Whittington Health NHS Trust, London, UK.
| | - Olivier Hermine
- Department of Hematology, Hôpital Necker, Assistance Publique Hôpitaux de Paris, University Paris Cité, Paris, France; INSERM U1163 and CNRS 8254, Imagine Institute, Université Sorbonne Paris Cité, Paris, France.
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29
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Zhang H, Xue F, Zhao H, Chen L, Wang T, Wu X. DNA methylation status of DNAJA4 is essential for human erythropoiesis. Epigenomics 2022; 14:1249-1267. [DOI: 10.2217/epi-2022-0341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Aims: To investigate DNA methylation patterns in early and terminal stages of erythropoiesis, and to explore the function of differentially methylated genes in erythropoiesis and erythroid disorders. Materials & methods: Differential analysis of DNA methylation and gene expression during erythropoiesis, as well as weighted gene coexpression network analysis of acute myeloid leukemia was performed. Results: We identified four candidate genes that possessed differential methylation in the promoter regions. DNAJA4 affected proliferation, apoptosis and enucleation during terminal erythropoiesis and was associated with the prognosis of acute myeloid leukemia. DNAJA4 was specifically highly expressed in erythroleukemia and is associated with DNA methylation. Conclusion: DNAJA4 plays a crucial role for erythropoiesis and is regulated via DNA methylation. Dysregulation of DNAJA4 expression is associated with erythroid disorders.
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Affiliation(s)
- Hengchao Zhang
- School of Life Sciences, Zhengzhou University, Science Road 100, Zhengzhou, 450001, China
| | - Fumin Xue
- Department of Gastroenterology, Children’s Hospital affiliated of Zhengzhou University, Zhengzhou, 450000, China
| | - Huizhi Zhao
- School of Life Sciences, Zhengzhou University, Science Road 100, Zhengzhou, 450001, China
| | - Lixiang Chen
- School of Life Sciences, Zhengzhou University, Science Road 100, Zhengzhou, 450001, China
| | - Ting Wang
- School of Life Sciences, Zhengzhou University, Science Road 100, Zhengzhou, 450001, China
| | - Xiuyun Wu
- School of Life Sciences, Zhengzhou University, Science Road 100, Zhengzhou, 450001, China
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30
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Perik-Zavodskii R, Perik-Zavodskaia O, Shevchenko J, Denisova V, Alrhmoun S, Volynets M, Tereshchenko V, Zaitsev K, Sennikov S. Immune Transcriptome Study of Human Nucleated Erythroid Cells from Different Tissues by Single-Cell RNA-Sequencing. Cells 2022; 11:cells11223537. [PMID: 36428967 PMCID: PMC9688070 DOI: 10.3390/cells11223537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/30/2022] [Accepted: 11/04/2022] [Indexed: 11/11/2022] Open
Abstract
Nucleated erythroid cells (NECs) are the precursors of erythrocytes. They can be found in various hematopoietic tissues or in the blood. Recently, they have been shown to be active players in immunosuppression through the synthesis of arginase-2 and reactive oxygen species. In this work, we studied NECs in adult bone marrow, umbilical cord blood, and foetal liver parenchyma using single-cell RNA sequencing and found that: (1) all studied NECs expressed the same set of genes, which was enriched in "GO biological process" immunity-related terms; (2) early and late NECs had differential expression of the genes associated with immunosuppression, cell cycle progression, apoptosis, and glycolysis; (3) NECs from different tissues of origin had differential expression of the genes associated with immunosuppression.
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Affiliation(s)
- Roman Perik-Zavodskii
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution Research Institute of Fundamental and Clinical Immunology, 630099 Novosibirsk, Russia
| | - Olga Perik-Zavodskaia
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution Research Institute of Fundamental and Clinical Immunology, 630099 Novosibirsk, Russia
| | - Julia Shevchenko
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution Research Institute of Fundamental and Clinical Immunology, 630099 Novosibirsk, Russia
| | - Vera Denisova
- Clinic of Immunopathology, Federal State Budgetary Scientific Institution Research Institute of Fundamental and Clinical Immunology, 630047 Novosibirsk, Russia
| | - Saleh Alrhmoun
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution Research Institute of Fundamental and Clinical Immunology, 630099 Novosibirsk, Russia
| | - Marina Volynets
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution Research Institute of Fundamental and Clinical Immunology, 630099 Novosibirsk, Russia
| | - Valeriy Tereshchenko
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution Research Institute of Fundamental and Clinical Immunology, 630099 Novosibirsk, Russia
| | - Konstantin Zaitsev
- Federal State Budgetary Scientific Institution “Siberian Federal Research and Clinical Center of the Federal Medicobiological Agency”, 634009 Tomsk, Russia
| | - Sergey Sennikov
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution Research Institute of Fundamental and Clinical Immunology, 630099 Novosibirsk, Russia
- Correspondence:
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31
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Yoshinaga M, Han K, Morgens DW, Horii T, Kobayashi R, Tsuruyama T, Hia F, Yasukura S, Kajiya A, Cai T, Cruz PHC, Vandenbon A, Suzuki Y, Kawahara Y, Hatada I, Bassik MC, Takeuchi O. The N 6-methyladenosine methyltransferase METTL16 enables erythropoiesis through safeguarding genome integrity. Nat Commun 2022; 13:6435. [PMID: 36307435 PMCID: PMC9616860 DOI: 10.1038/s41467-022-34078-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 10/12/2022] [Indexed: 02/07/2023] Open
Abstract
During erythroid differentiation, the maintenance of genome integrity is key for the success of multiple rounds of cell division. However, molecular mechanisms coordinating the expression of DNA repair machinery in erythroid progenitors are poorly understood. Here, we discover that an RNA N6-methyladenosine (m6A) methyltransferase, METTL16, plays an essential role in proper erythropoiesis by safeguarding genome integrity via the control of DNA-repair-related genes. METTL16-deficient erythroblasts exhibit defective differentiation capacity, DNA damage and activation of the apoptotic program. Mechanistically, METTL16 controls m6A deposition at the structured motifs in DNA-repair-related transcripts including Brca2 and Fancm mRNAs, thereby upregulating their expression. Furthermore, a pairwise CRISPRi screen revealed that the MTR4-nuclear RNA exosome complex is involved in the regulation of METTL16 substrate mRNAs in erythroblasts. Collectively, our study uncovers that METTL16 and the MTR4-nuclear RNA exosome act as essential regulatory machinery to maintain genome integrity and erythropoiesis.
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Affiliation(s)
- Masanori Yoshinaga
- grid.258799.80000 0004 0372 2033Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Kyoto, 606-8501 Japan
| | - Kyuho Han
- grid.168010.e0000000419368956Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305 USA
| | - David W. Morgens
- grid.168010.e0000000419368956Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305 USA
| | - Takuro Horii
- grid.256642.10000 0000 9269 4097Laboratory of Genome Science, Biosignal Genome Resource Center, Institute for Molecular and Cellular Regulation, Gunma University, Gunma, 371-8512 Japan
| | - Ryosuke Kobayashi
- grid.256642.10000 0000 9269 4097Laboratory of Genome Science, Biosignal Genome Resource Center, Institute for Molecular and Cellular Regulation, Gunma University, Gunma, 371-8512 Japan
| | - Tatsuaki Tsuruyama
- grid.258799.80000 0004 0372 2033Department of Drug and Discovery Medicine, Graduate School of Medicine, Kyoto University, Kyoto, 606-8501 Japan
| | - Fabian Hia
- grid.258799.80000 0004 0372 2033Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Kyoto, 606-8501 Japan
| | - Shota Yasukura
- grid.258799.80000 0004 0372 2033Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Kyoto, 606-8501 Japan
| | - Asako Kajiya
- grid.258799.80000 0004 0372 2033Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Kyoto, 606-8501 Japan
| | - Ting Cai
- grid.258799.80000 0004 0372 2033Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Kyoto, 606-8501 Japan
| | - Pedro H. C. Cruz
- grid.136593.b0000 0004 0373 3971Department of RNA Biology and Neuroscience, Graduate School of Medicine, Osaka University, Osaka, 565-0871 Japan
| | - Alexis Vandenbon
- grid.258799.80000 0004 0372 2033Laboratory of Tissue Homeostasis, Institute for Life and Medical Sciences, Kyoto University, Kyoto, 606-8507 Japan
| | - Yutaka Suzuki
- grid.26999.3d0000 0001 2151 536XLaboratory of Functional Genomics, Department of Medical Genome Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, 277-8562 Japan
| | - Yukio Kawahara
- grid.136593.b0000 0004 0373 3971Department of RNA Biology and Neuroscience, Graduate School of Medicine, Osaka University, Osaka, 565-0871 Japan
| | - Izuho Hatada
- grid.256642.10000 0000 9269 4097Laboratory of Genome Science, Biosignal Genome Resource Center, Institute for Molecular and Cellular Regulation, Gunma University, Gunma, 371-8512 Japan ,grid.256642.10000 0000 9269 4097Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Gunma, 371-8512 Japan
| | - Michael C. Bassik
- grid.168010.e0000000419368956Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305 USA
| | - Osamu Takeuchi
- grid.258799.80000 0004 0372 2033Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Kyoto, 606-8501 Japan
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Dumarchey A, Lavazec C, Verdier F. Erythropoiesis and Malaria, a Multifaceted Interplay. Int J Mol Sci 2022; 23:ijms232112762. [PMID: 36361552 PMCID: PMC9657351 DOI: 10.3390/ijms232112762] [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: 09/30/2022] [Revised: 10/19/2022] [Accepted: 10/20/2022] [Indexed: 01/24/2023] Open
Abstract
One of the major pathophysiologies of malaria is the development of anemia. Although hemolysis and splenic clearance are well described as causes of malarial anemia, abnormal erythropoiesis has been observed in malaria patients and may contribute significantly to anemia. The interaction between inadequate erythropoiesis and Plasmodium parasite infection, which partly occurs in the bone marrow, has been poorly investigated to date. However, recent findings may provide new insights. This review outlines clinical and experimental studies describing different aspects of ineffective erythropoiesis and dyserythropoiesis observed in malaria patients and in animal or in vitro models. We also highlight the various human and parasite factors leading to erythropoiesis disorders and discuss the impact that Plasmodium parasites may have on the suppression of erythropoiesis.
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Affiliation(s)
- Aurélie Dumarchey
- Inserm U1016, CNRS UMR8104, Université Paris Cité, Institut Cochin, 75014 Paris, France
- Laboratoire d’Excellence GR-Ex, 75015 Paris, France
| | - Catherine Lavazec
- Inserm U1016, CNRS UMR8104, Université Paris Cité, Institut Cochin, 75014 Paris, France
- Laboratoire d’Excellence GR-Ex, 75015 Paris, France
| | - Frédérique Verdier
- Inserm U1016, CNRS UMR8104, Université Paris Cité, Institut Cochin, 75014 Paris, France
- Laboratoire d’Excellence GR-Ex, 75015 Paris, France
- Correspondence:
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Peng Y, Tang L, Li Y, Song J, Liu H, Wang P, Zhong Z, Yang Y, Wang S, Chen L, Zhang J, Zhang S, Wang Z, Li M, Liang L, Liu J. Comprehensive proteomic analysis reveals dynamic phospho-profiling in human early erythropoiesis. Br J Haematol 2022; 199:427-442. [PMID: 35974424 DOI: 10.1111/bjh.18407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 07/25/2022] [Accepted: 08/03/2022] [Indexed: 12/01/2022]
Abstract
Normal early erythropoiesis depends on the precise regulation of protein expression and phosphorylation modification. Dysregulation of protein levels or modification contributes to erythroid disorders. To date, the dynamics of protein phosphorylation profiling across human erythroid development is not fully understood. Here, we characterized quantitative proteomic and phosphoproteomic profiling by tandem mass-tagging technology. We systemically built phospho-expression profiling and expression clusters of 11 414 phosphopeptides for human early erythropoiesis. The standardization methods for multitier integrative analyses revealed multiple functional modules of phosphoproteins (e.g., regulation of the G2/M transition) and active phosphorylated signalling (e.g., cell cycle-related pathways). Our further analysis revealed that CDK family members were the main kinases that phosphorylate substrates in erythroid progenitors and identified that CDK9 played an important role in the proliferation of erythroid progenitors. Collectively, our phosphoproteomic profiling, integrative network analysis and functional studies define landscapes of the phosphoproteome and reveal signalling pathways that are involved in human early erythropoiesis. This study will serve as a valuable resource for further investigations of phosphatase and kinase functions in human erythropoiesis and erythroid-related diseases.
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Affiliation(s)
- Yuanliang Peng
- Department of Hematology, The Second Xiangya Hospital of Central South University, Molecular Biology Research Center, Center for Medical Genetics, School of Life Sciences, Hunan Province Key Laboratory of Basic and Applied Hematology, Central South University, Changsha, China
| | - Li Tang
- School of Information Science and Engineering, Central South University, Changsha, China
| | - Yanan Li
- Department of Hematology, The Second Xiangya Hospital of Central South University, Molecular Biology Research Center, Center for Medical Genetics, School of Life Sciences, Hunan Province Key Laboratory of Basic and Applied Hematology, Central South University, Changsha, China
| | - Jianhui Song
- Department of Pediatrics, Xiangya Hospital, Central South University, Changsha, China
| | - Hong Liu
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China
| | - Pan Wang
- Department of Hematology, The Second Xiangya Hospital of Central South University, Molecular Biology Research Center, Center for Medical Genetics, School of Life Sciences, Hunan Province Key Laboratory of Basic and Applied Hematology, Central South University, Changsha, China
| | - Zhizhou Zhong
- School of Information Science and Engineering, Central South University, Changsha, China
| | - Yifei Yang
- School of Information Science and Engineering, Central South University, Changsha, China
| | - Shihui Wang
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Lixiang Chen
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Ji Zhang
- Department of Clinical Laboratory, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, Guangdong, China
| | - Shijie Zhang
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Zi Wang
- Department of Hematology, The Second Xiangya Hospital of Central South University, Molecular Biology Research Center, Center for Medical Genetics, School of Life Sciences, Hunan Province Key Laboratory of Basic and Applied Hematology, Central South University, Changsha, China
| | - Min Li
- School of Information Science and Engineering, Central South University, Changsha, China
| | - Long Liang
- Department of Hematology, The Second Xiangya Hospital of Central South University, Molecular Biology Research Center, Center for Medical Genetics, 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 of Central South University, Molecular Biology Research Center, Center for Medical Genetics, School of Life Sciences, Hunan Province Key Laboratory of Basic and Applied Hematology, Central South University, Changsha, China
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Arsenic impairs the lineage commitment of hematopoietic progenitor cells through the attenuation of GATA-2 DNA binding activity. Toxicol Appl Pharmacol 2022; 452:116193. [PMID: 35961411 DOI: 10.1016/j.taap.2022.116193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 07/28/2022] [Accepted: 08/05/2022] [Indexed: 11/22/2022]
Abstract
Arsenic exposure produces significant hematotoxicity in vitro and in vivo. Our previous work shows that arsenic (in the form of arsenite, AsIII) interacts with the zinc finger domains of GATA-1, inhibiting the function of this critical transcription factor, and resulting in the suppression of erythropoiesis. In addition to GATA-1, GATA-2 also plays a key role in the regulation of hematopoiesis. GATA-1 and GATA-2 have similar zinc finger domains (C4-type) that are structurally favorable for AsIII interactions. Taking this into consideration, we hypothesized that early stages of hematopoietic differentiation that are dependent on the function of GATA-2 may also be disrupted by AsIII exposure. We found that in vitro AsIII exposures disrupt the erythromegakaryocytic lineage commitment and differentiation of erythropoietin-stimulated primary mouse bone marrow hematopoietic progenitor cells (HPCs), producing an aberrant accumulation of cells in early stages of hematopoiesis and subsequent reduction of committed erythro-megakaryocyte progenitor cells. Arsenic significantly accumulated in the GATA-2 protein, causing the loss of zinc, and disruption of GATA-2 function, as measured by chromatin immunoprecipitation and the expression of GATA-2 responsive genes. Our results show that the attenuation of GATA-2 function is an important mechanism contributing to the aberrant lineage commitment and differentiation of early HPCs. Collectively, findings from the present study suggest that the AsIII-induced disruption of erythro-megakaryopoiesis may contribute to the onset and/or exacerbation of hematological disorders, such as anemia.
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Medlock AE, Dailey HA. New Avenues of Heme Synthesis Regulation. Int J Mol Sci 2022; 23:ijms23137467. [PMID: 35806474 PMCID: PMC9267699 DOI: 10.3390/ijms23137467] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/30/2022] [Accepted: 07/02/2022] [Indexed: 02/04/2023] Open
Abstract
During erythropoiesis, there is an enormous demand for the synthesis of the essential cofactor of hemoglobin, heme. Heme is synthesized de novo via an eight enzyme-catalyzed pathway within each developing erythroid cell. A large body of data exists to explain the transcriptional regulation of the heme biosynthesis enzymes, but until recently much less was known about alternate forms of regulation that would allow the massive production of heme without depleting cellular metabolites. Herein, we review new studies focused on the regulation of heme synthesis via carbon flux for porphyrin synthesis to post-translations modifications (PTMs) that regulate individual enzymes. These PTMs include cofactor regulation, phosphorylation, succinylation, and glutathionylation. Additionally discussed is the role of the immunometabolite itaconate and its connection to heme synthesis and the anemia of chronic disease. These recent studies provide new avenues to regulate heme synthesis for the treatment of diseases including anemias and porphyrias.
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Affiliation(s)
- Amy E. Medlock
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA 30602, USA
- Augusta University/University of Georgia Medical Partnership, University of Georgia, Athens, GA 30602, USA
- Correspondence: (A.E.M.); (H.A.D.)
| | - Harry A. Dailey
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA 30602, USA
- Department of Microbiology, University of Georgia, Athens, GA 30602, USA
- Correspondence: (A.E.M.); (H.A.D.)
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36
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Han X, Ji P. Carbon dots for the treatment of cancer-related anemia. BLOOD SCIENCE 2022; 4:174-175. [PMID: 36518596 PMCID: PMC9742109 DOI: 10.1097/bs9.0000000000000120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 05/15/2022] [Indexed: 11/26/2022] Open
Affiliation(s)
- Xu Han
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL
| | - Peng Ji
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL
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Stolla MC, Reilly A, Bergantinos R, Stewart S, Thom N, Clough CA, Wellington R, Stolitenko R, Abkowitz JL, Doulatov S. ATG4A regulates human erythroid maturation and mitochondrial clearance. Blood Adv 2022; 6:3579-3589. [PMID: 35443024 PMCID: PMC9631553 DOI: 10.1182/bloodadvances.2021005910] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 03/15/2022] [Indexed: 01/09/2023] Open
Abstract
Autophagy is a self-degradation pathway that is essential for erythropoiesis. During erythroid differentiation, autophagy facilitates the degradation of macromolecules and the programmed clearance of mitochondria. Impaired mitochondrial clearance results in anemia and alters the lifespan of red blood cells in vivo. While several essential autophagy genes contribute to autophagy in erythropoiesis, little is known about erythroid-specific mediators of this pathway. Genetic analysis of primary human erythroid and nonerythroid cells revealed the selective upregulation of the core autophagy gene ATG4A in maturing human erythroid cells. Because the function of ATG4A in erythropoiesis is unknown, we evaluated its role using an ex vivo model of human erythropoiesis. Depletion of ATG4A in primary human hematopoietic stem and progenitor cells selectively impaired erythroid but not myeloid lineage differentiation, resulting in reduced red cell production, delayed terminal differentiation, and impaired enucleation. Loss of ATG4A impaired autophagy and mitochondrial clearance, giving rise to reticulocytes with retained mitochondria and autophagic vesicles. In summary, our study identifies ATG4A as a cell type-specific regulator of autophagy in erythroid development.
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Affiliation(s)
| | | | | | | | - Neele Thom
- Division of Hematology, Department of Medicine
| | - Courtnee A. Clough
- Division of Hematology, Department of Medicine
- Molecular and Cellular Biology Program
| | - Rachel C. Wellington
- Division of Hematology, Department of Medicine
- Molecular and Cellular Biology Program
| | | | - Janis L. Abkowitz
- Division of Hematology, Department of Medicine
- Institute for Stem Cell and Regenerative Medicine, and
- Department of Genome Sciences, University of Washington, Seattle, WA
| | - Sergei Doulatov
- Division of Hematology, Department of Medicine
- Molecular and Cellular Biology Program
- Institute for Stem Cell and Regenerative Medicine, and
- Department of Genome Sciences, University of Washington, Seattle, WA
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Efficient terminal erythroid differentiation requires the APC/C cofactor Cdh1 to limit replicative stress in erythroblasts. Sci Rep 2022; 12:10489. [PMID: 35729193 PMCID: PMC9213546 DOI: 10.1038/s41598-022-14331-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 06/06/2022] [Indexed: 11/08/2022] Open
Abstract
The APC/C-Cdh1 ubiquitin ligase complex drives proteosomal degradation of cell cycle regulators and other cellular proteins during the G1 phase of the cycle. The complex serves as an important modulator of the G1/S transition and prevents premature entry into S phase, genomic instability, and tumor development. Additionally, mounting evidence supports a role for this complex in cell differentiation, but its relevance in erythropoiesis has not been addressed so far. Here we show, using mouse models of Cdh1 deletion, that APC/C-Cdh1 activity is required for efficient terminal erythroid differentiation during fetal development as well as postnatally. Consistently, Cdh1 ablation leads to mild but persistent anemia from birth to adulthood. Interestingly, loss of Cdh1 seems to affect both, steady-state and stress erythropoiesis. Detailed analysis of Cdh1-deficient erythroid populations revealed accumulation of DNA damage in maturing erythroblasts and signs of delayed G2/M transition. Moreover, through direct assessment of replication dynamics in fetal liver cells, we uncovered slow fork movement and increased origin usage in the absence of Cdh1, strongly suggesting replicative stress to be the underlying cause of DNA lesions and cell cycle delays in erythroblasts devoid of Cdh1. In turn, these alterations would restrain full maturation of erythroblasts into reticulocytes and reduce the output of functional erythrocytes, leading to anemia. Our results further highlight the relevance of APC/C-Cdh1 activity for terminal differentiation and underscore the need for precise control of replication dynamics for efficient supply of red blood cells.
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The Effect of Low-Energy Laser-Driven Ultrashort Pulsed Electron Beam Irradiation on Erythropoiesis and Oxidative Stress in Rats. Int J Mol Sci 2022; 23:ijms23126692. [PMID: 35743135 PMCID: PMC9223873 DOI: 10.3390/ijms23126692] [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: 05/18/2022] [Revised: 06/06/2022] [Accepted: 06/10/2022] [Indexed: 12/04/2022] Open
Abstract
Anemia is a commonly observed consequence of whole-body exposure to a dose of X-ray or gamma irradiation of the order of the mean lethal dose in mammals, and it is an important factor for the determination of the survival of animals. The aim of this study was to unravel the effect of laser-driven ultrashort pulsed electron beam (UPEB) irradiation on the process of erythropoiesis and the redox state in the organism. Wistar rats were exposed to laser-driven UPEB irradiation, after which the level of oxidative stress and the activities of different antioxidant enzymes, as well as blood smears, bone marrow imprints and sections, erythroblastic islets, hemoglobin and hematocrit, hepatic iron, DNA, and erythropoietin levels, were assessed on the 1st, 3rd, 7th, 14th, and 28th days after irradiation. Despite the fact that laser-driven UPEB irradiation requires quite low doses and repetition rates to achieve the LD50 in rats, our findings suggest that whole-body exposure with this new type of irradiation causes relatively mild anemia in rats, with subsequent fast recovery up to the 28th day. Moreover, this novel type of irradiation causes highly intense processes of oxidative stress, which, despite being relatively extinguished, did not reach the physiologically stable level even at the 28th day after irradiation due to the violations in the antioxidant system of the organism.
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40
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Feldman TP, Egan ES. Uncovering a Cryptic Site of Malaria Pathogenesis: Models to Study Interactions Between Plasmodium and the Bone Marrow. Front Cell Infect Microbiol 2022; 12:917267. [PMID: 35719356 PMCID: PMC9201243 DOI: 10.3389/fcimb.2022.917267] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 05/03/2022] [Indexed: 12/21/2022] Open
Abstract
The bone marrow is a critical site of host-pathogen interactions in malaria infection. The discovery of Plasmodium asexual and transmission stages in the bone marrow has renewed interest in the tissue as a niche for cellular development of both host and parasite. Despite its importance, bone marrow in malaria infection remains largely unexplored due to the challenge of modeling the complex hematopoietic environment in vitro. Advancements in modeling human erythropoiesis ex-vivo from primary human hematopoietic stem and progenitor cells provide a foothold to study the host-parasite interactions occurring in this understudied site of malaria pathogenesis. This review focuses on current in vitro methods to recapitulate and assess bone marrow erythropoiesis and their potential applications in the malaria field. We summarize recent studies that leveraged ex-vivo erythropoiesis to shed light on gametocyte development in nucleated erythroid stem cells and begin to characterize host cell responses to Plasmodium infection in the hematopoietic niche. Such models hold potential to elucidate mechanisms of disordered erythropoiesis, an underlying contributor to malaria anemia, as well as understand the biological determinants of parasite sexual conversion. This review compares the advantages and limitations of the ex-vivo erythropoiesis approach with those of in vivo human and animal studies of the hematopoietic niche in malaria infection. We highlight the need for studies that apply single cell analyses to this complex system and incorporate physical and cellular components of the bone marrow that may influence erythropoiesis and parasite development.
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Affiliation(s)
- Tamar P. Feldman
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, United States
- Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, United States
| | - Elizabeth S. Egan
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, United States
- Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, United States
- *Correspondence: Elizabeth S. Egan,
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41
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Vignjević Petrinović S, Jauković A, Milošević M, Bugarski D, Budeč M. Targeting Stress Erythropoiesis Pathways in Cancer. Front Physiol 2022; 13:844042. [PMID: 35694408 PMCID: PMC9174937 DOI: 10.3389/fphys.2022.844042] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 05/09/2022] [Indexed: 11/13/2022] Open
Abstract
Cancer-related anemia (CRA) is a common multifactorial disorder that adversely affects the quality of life and overall prognosis in patients with cancer. Safety concerns associated with the most common CRA treatment options, including intravenous iron therapy and erythropoietic-stimulating agents, have often resulted in no or suboptimal anemia management for many cancer patients. Chronic anemia creates a vital need to restore normal erythropoietic output and therefore activates the mechanisms of stress erythropoiesis (SE). A growing body of evidence demonstrates that bone morphogenetic protein 4 (BMP4) signaling, along with glucocorticoids, erythropoietin, stem cell factor, growth differentiation factor 15 (GDF15) and hypoxia-inducible factors, plays a pivotal role in SE. Nevertheless, a chronic state of SE may lead to ineffective erythropoiesis, characterized by the expansion of erythroid progenitor pool, that largely fails to differentiate and give rise to mature red blood cells, further aggravating CRA. In this review, we summarize the current state of knowledge on the emerging roles for stress erythroid progenitors and activated SE pathways in tumor progression, highlighting the urgent need to suppress ineffective erythropoiesis in cancer patients and develop an optimal treatment strategy as well as a personalized approach to CRA management.
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Affiliation(s)
- Sanja Vignjević Petrinović
- Laboratory for Neuroendocrinology, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Aleksandra Jauković
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Maja Milošević
- Laboratory for Neuroendocrinology, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Diana Bugarski
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Mirela Budeč
- Laboratory for Neuroendocrinology, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
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42
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Ren K, Li E, Ji P. Proteome remodeling and organelle clearance in mammalian terminal erythropoiesis. Curr Opin Hematol 2022; 29:137-143. [PMID: 35441599 DOI: 10.1097/moh.0000000000000707] [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] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW The differentiation from colony forming unit-erythroid (CFU-E) cells to mature enucleated red blood cells is named terminal erythropoiesis in mammals. Apart from enucleation, several unique features during these developmental stages include proteome remodeling and organelle clearance that are important to achieve hemoglobin enrichment. Here, we review the recent advances in the understanding of novel regulatory mechanisms in these processes, focusing on the master regulators that link these major events during terminal erythropoiesis. RECENT FINDINGS Comprehensive proteomic studies revealed a mismatch of protein abundance to their corresponding transcript abundance, which indicates that the proteome remodeling is regulated in a complex way from transcriptional control to posttranslational modifications. Key regulators in organelle clearance were also found to play critical roles in proteome remodeling. SUMMARY These studies demonstrate that the complexity of terminal erythropoiesis is beyond the conventional transcriptomic centric perspective. Posttranslational modifications such as ubiquitination are critical in terminal erythroid proteome remodeling that is also closely coupled with organelle clearance.
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Affiliation(s)
- Kehan Ren
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
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43
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Hematogenesis Adaptation to Long-Term Hypoxia Acclimation in Zebrafish (Danio rerio). FISHES 2022. [DOI: 10.3390/fishes7030098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
When fish live in the wild or are cultured artificially, they will inevitably suffer from hypoxia. At the same time, blood physiological indexes represent the physiological state of fish. In order to study the effect of long-term hypoxia acclimation on fish hematogenesis, we cultured zebrafish embryos into adulthood in a hypoxia incubator (1.5 ± 0.2 mg/L). Then we compared the hematological parameters of zebrafish cultured in normoxia and hypoxia conditions. Transcriptome sequencing analysis of the main hematopoietic tissue, the head kidney, was also compared between the two groups. Results showed that the number of erythrocytes increased significantly in the long-term hypoxia acclimated group, while the size of several cell types, such as red blood cells, eosinophils, basophils, small lymphocytes and thrombocytes, decreased significantly. The transcriptomic comparisons revealed that there were 6475 differentially expressed genes (DEGs) between the two groups. A Gene Ontology (GO) annotation and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis showed that hematopoiesis and cell proliferation signaling were the most significantly enriched pathways in the head kidney of hypoxia acclimated zebrafish. In addition, many genes involved in the hematopoietic process showed significantly higher levels of expression in the hypoxia acclimated zebrafish, when compared to the normoxia zebrafish. When considered together, these data allowed us to conclude that long-term hypoxia can promote the hematopoiesis process and cell proliferation signaling in the zebrafish head kidney, which resulted in higher red blood cell production. Higher numbers of red blood cells allow for better adaptation to the hypoxic environment. In conclusion, this study provides a basis for the in-depth understanding of the effects of hypoxia on hematogenesis in fish species.
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44
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Caulier AL, Sankaran VG. Molecular and cellular mechanisms that regulate human erythropoiesis. Blood 2022; 139:2450-2459. [PMID: 34936695 PMCID: PMC9029096 DOI: 10.1182/blood.2021011044] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 12/15/2021] [Indexed: 12/03/2022] Open
Abstract
To enable effective oxygen transport, ∼200 billion red blood cells (RBCs) need to be produced every day in the bone marrow through the fine-tuned process of erythropoiesis. Erythropoiesis is regulated at multiple levels to ensure that defective RBC maturation or overproduction can be avoided. Here, we provide an overview of different layers of this control, ranging from cytokine signaling mechanisms that enable extrinsic regulation of RBC production to intrinsic transcriptional pathways necessary for effective erythropoiesis. Recent studies have also elucidated the importance of posttranscriptional regulation and highlighted additional gatekeeping mechanisms necessary for effective erythropoiesis. We additionally discuss the insights gained by studying human genetic variation affecting erythropoiesis and highlight the discovery of BCL11A as a regulator of hemoglobin switching through genetic studies. Finally, we provide an outlook of how our ability to measure multiple facets of this process at single-cell resolution, while accounting for the impact of human variation, will continue to refine our knowledge of erythropoiesis and how this process is perturbed in disease. As we learn more about this intricate and important process, additional opportunities to modulate erythropoiesis for therapeutic purposes will undoubtedly emerge.
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Affiliation(s)
- Alexis L Caulier
- Division of Hematology/Oncology, Boston Children's Hospital, Harvard Medical School, Boston, MA
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA; and
- Broad Institute of MIT and Harvard, Cambridge, MA
| | - Vijay G Sankaran
- Division of Hematology/Oncology, Boston Children's Hospital, Harvard Medical School, Boston, MA
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA; and
- Broad Institute of MIT and Harvard, Cambridge, MA
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45
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Regulatory Crosstalk between Physiological Low O 2 Concentration and Notch Pathway in Early Erythropoiesis. Biomolecules 2022; 12:biom12040540. [PMID: 35454129 PMCID: PMC9028139 DOI: 10.3390/biom12040540] [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: 02/15/2022] [Revised: 03/25/2022] [Accepted: 03/30/2022] [Indexed: 12/04/2022] Open
Abstract
Physiological low oxygen (O2) concentration (<5%) favors erythroid development ex vivo. It is known that low O2 concentration, via the stabilization of hypoxia-induced transcription factors (HIFs), intervenes with Notch signaling in the control of cell fate. In addition, Notch activation is implicated in the regulation of erythroid differentiation. We test here if the favorable effects of a physiological O2 concentration (3%) on the amplification of erythroid progenitors implies a cooperation between HIFs and the Notch pathway. To this end, we utilized a model of early erythropoiesis ex vivo generated from cord blood CD34+ cells transduced with shHIF1α and shHIF2α at 3% O2 and 20% O2 in the presence or absence of the Notch pathway inhibitor. We observed that Notch signalization was activated by Notch2R−Jagged1 ligand interaction among progenitors. The inhibition of the Notch pathway provoked a modest reduction in erythroid cell expansion and promoted erythroid differentiation. ShHIF1α and particularly shHIF2α strongly impaired erythroid progenitors’ amplification and differentiation. Additionally, HIF/NOTCH signaling intersects at the level of multipotent progenitor erythroid commitment and amplification of BFU-E. In that, both HIFs contribute to the expression of Notch2R and Notch target gene HES1. Our study shows that HIF, particularly HIF2, has a determining role in the early erythroid development program, which includes Notch signaling.
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Red Blood Cell Distribution Width in Heart Failure: Pathophysiology, Prognostic Role, Controversies and Dilemmas. J Clin Med 2022; 11:jcm11071951. [PMID: 35407558 PMCID: PMC8999162 DOI: 10.3390/jcm11071951] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 03/26/2022] [Accepted: 03/30/2022] [Indexed: 12/12/2022] Open
Abstract
Red blood cell distribution width (RDW), an integral parameter of the complete blood count (CBC), has been traditionally used for the classification of several types of anemia. However, over the last decade RDW has been associated with outcome in patients with several cardiovascular diseases including heart failure. The role of RDW in acute, chronic and advanced heart failure is the focus of the present work. Several pathophysiological mechanisms of RDW’s increase in heart failure have been proposed (i.e., inflammation, oxidative stress, adrenergic stimulation, undernutrition, ineffective erythropoiesis, reduced iron mobilization, etc.); however, the exact mechanism remains unknown. Although high RDW values at admission and discharge have been associated with adverse prognosis in hospitalized heart failure patients, the prognostic role of in-hospital RDW changes (ΔRDW) remains debatable. RDW has been incorporated in recent heart failure prognostic models. Utilizing RDW as a treatment target in heart failure may be a promising area of research.
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Notch Signaling and Cross-Talk in Hypoxia: A Candidate Pathway for High-Altitude Adaptation. Life (Basel) 2022; 12:life12030437. [PMID: 35330188 PMCID: PMC8954738 DOI: 10.3390/life12030437] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/11/2022] [Accepted: 03/11/2022] [Indexed: 12/17/2022] Open
Abstract
Hypoxia triggers complex inter- and intracellular signals that regulate tissue oxygen (O2) homeostasis, adjusting convective O2 delivery and utilization (i.e., metabolism). Human populations have been exposed to high-altitude hypoxia for thousands of years and, in doing so, have undergone natural selection of multiple gene regions supporting adaptive traits. Some of the strongest selection signals identified in highland populations emanate from hypoxia-inducible factor (HIF) pathway genes. The HIF pathway is a master regulator of the cellular hypoxic response, but it is not the only regulatory pathway under positive selection. For instance, regions linked to the highly conserved Notch signaling pathway are also top targets, and this pathway is likely to play essential roles that confer hypoxia tolerance. Here, we explored the importance of the Notch pathway in mediating the cellular hypoxic response. We assessed transcriptional regulation of the Notch pathway, including close cross-talk with HIF signaling, and its involvement in the mediation of angiogenesis, cellular metabolism, inflammation, and oxidative stress, relating these functions to generational hypoxia adaptation.
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Hemogen /BRG1 cooperativity modulates promoter and enhancer activation during erythropoiesis. Blood 2022; 139:3532-3545. [PMID: 35297980 DOI: 10.1182/blood.2021014308] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 03/15/2022] [Indexed: 11/20/2022] Open
Abstract
Hemogen, also known as EDAG, is a hematopoietic tissue-specific gene that regulates the proliferation and differentiation of hematopoietic cells. However, the mechanism underlying hemogen function in erythropoiesis is unknown. We found that depletion of hemogen in human CD34+ erythroid progenitor cells and HUDEP2 cells significantly reduced the expression of genes associated with heme and hemoglobin synthesis, supporting a positive role of hemogen in erythroid maturation. In human K562 cells, hemogen antagonized the occupancy of co-repressors NuRD complex and facilitated LDB1 complex-mediated chromatin looping. Hemogen recruited SWI/SNF complex ATPase BRG1 as a co-activator to regulate nucleosome accessibility and H3K27ac enrichment for promoter and enhancer activity. To ask if hemogen/BRG1 cooperativity is conserved in mammalian systems, we generated hemogen KO/KI mice and investigated hemogen/BRG1 function in murine erythropoiesis. Loss of hemogen in E12.5-E16.5 fetal liver cells impeded erythroid differentiation through reducing the production of mature erythroblasts. ChIP-seq in WT and hemogen KO animal revealed BRG1 is largely dependent on hemogen to regulate chromatin accessibility at erythroid gene promoters and enhancers. In summary, hemogen/BRG1 interaction in mammals is essential for fetal erythroid maturation and hemoglobin production through its active role in promoter and enhancer activity and chromatin organization.
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Stevens-Hernandez CJ, Bruce LJ. Reticulocyte Maturation. MEMBRANES 2022; 12:311. [PMID: 35323786 PMCID: PMC8953437 DOI: 10.3390/membranes12030311] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/03/2022] [Accepted: 03/08/2022] [Indexed: 02/04/2023]
Abstract
Changes to the membrane proteins and rearrangement of the cytoskeleton must occur for a reticulocyte to mature into a red blood cell (RBC). Different mechanisms of reticulocyte maturation have been proposed to reduce the size and volume of the reticulocyte plasma membrane and to eliminate residual organelles. Lysosomal protein degradation, exosome release, autophagy and the extrusion of large autophagic-endocytic hybrid vesicles have been shown to contribute to reticulocyte maturation. These processes may occur simultaneously or perhaps sequentially. Reticulocyte maturation is incompletely understood and requires further investigation. RBCs with membrane defects or cation leak disorders caused by genetic variants offer an insight into reticulocyte maturation as they present characteristics of incomplete maturation. In this review, we compare the structure of the mature RBC membrane with that of the reticulocyte. We discuss the mechanisms of reticulocyte maturation with a focus on incomplete reticulocyte maturation in red cell variants.
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Affiliation(s)
- Christian J Stevens-Hernandez
- Bristol Institute for Transfusion Sciences, National Health Service (NHS) Blood and Transplant, Bristol BS34 7QH, UK
- School of Biochemistry, University of Bristol, Bristol BS8 ITD, UK
| | - Lesley J Bruce
- Bristol Institute for Transfusion Sciences, National Health Service (NHS) Blood and Transplant, Bristol BS34 7QH, UK
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Hasan S, Hu L, Williams O, Eklund EA. Ruxolitinib ameliorates progressive anemia and improves survival during episodes of emergency granulopoiesis in Fanconi C−/− mice. Exp Hematol 2022; 109:55-67.e2. [PMID: 35278531 PMCID: PMC9064927 DOI: 10.1016/j.exphem.2022.03.001] [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: 10/25/2021] [Revised: 03/02/2022] [Accepted: 03/04/2022] [Indexed: 11/15/2022]
Abstract
Fanconi anemia (FA) is an inherited disorder of DNA repair with hematologic manifestations that range from anemia to bone marrow failure to acute myeloid leukemia. In a murine model of FA (Fancc-/- mice), we found bone marrow failure was accelerated by repeated attempts to induce emergency (stress) granulopoiesis, the process for granulocyte production during the innate immune response. Fancc-/- mice exhibited an impaired granulocytosis response and died with profound anemia during repeated challenge. In the current study, we found erythropoiesis and serum erythropoietin decreased in Fancc-/- and wild-type (Wt) mice as emergency granulopoiesis peaked. Serum erythropoietin returned to baseline during steady-state resumption, and compensatory proliferation of erythroid progenitors was associated with DNA damage and apoptosis in Fancc-/- mice, but not Wt mice. The erythropoietin receptor activates Janus kinase 2 (Jak2), and we found treatment of Fancc-/- mice with ruxolitinib (Jak1/2-inhibitor) decreased anemia, enhanced granulocytosis, delayed clonal progression and prolonged survival during repeated emergency granulopoiesis episodes. This was associated with a decrease in DNA damage and apoptosis in Fancc-/- erythroid progenitors during this process. Transcriptome analysis of these cells identified enhanced activity of pathways for metabolism of reactive oxygen species, and decreased apoptosis- and autophagy-related pathways, as major ruxolitinib-effects in Fancc-/- mice. In contrast, ruxolitinib influenced primarily pathways involved in proliferation and differentiation in Wt mice. Ruxolitinib is approved for treatment of myeloproliferative disorders and graft-versus-host disease, suggesting the possibility of translational use as a bone marrow protectant in FA.
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Affiliation(s)
- Shirin Hasan
- Department of Medicine, Northwestern University, Chicago, IL
| | - Liping Hu
- Department of Medicine, Northwestern University, Chicago, IL
| | | | - Elizabeth A Eklund
- Department of Medicine, Northwestern University, Chicago, IL; Jesse Brown VA Medical Center, Chicago, IL.
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