1
|
Tsukamoto T. The expression of Galectin-9 correlates with mTOR and AMPK in murine colony-forming erythroid progenitors. Eur J Haematol 2024. [PMID: 38853593 DOI: 10.1111/ejh.14249] [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: 04/05/2024] [Revised: 05/17/2024] [Accepted: 05/22/2024] [Indexed: 06/11/2024]
Abstract
OBJECTIVES Galectin-9 (Gal-9) is an immune checkpoint ligand for T-cell immunoglobulin and mucin domain 3. Although the roles of Gal-9 in regulating immune responses have been well investigated, their biological roles have yet to be fully documented. This study aimed to analyse the expression of Gal-9 bone marrow (BM) cells in C57BL/6J (B6) mice. Furthermore, the co-expression of Gal-9 with the mammalian target of rapamycin (mTOR) and AMP-activated protein kinase (AMPK) was investigated. METHODS The BM cells in adult C57BL/6J (B6) mice were collected and analysed in vitro. RESULTS In a flow cytometric analysis of BM cells, Gal-9 was highly expressed in c-KithiSca-1-CD34-CD71+ erythroid progenitors (EPs), whereas it was downregulated in more differentiated c-KitloCD71+TER119+ cells. Subsequently, a negative selection of CD3-B220-Sca-1-CD34-CD41-CD16/32- EPs was performed. This resulted in substantial enrichment of KithiCD71+Gal-9+ cells and erythroid colony-forming units (CFU-Es), suggesting that the colony-forming subset of EPs are included in the KithiCD71+Gal-9+ population. Furthermore, we found that EPs had lower mTOR and AMPK expression levels in Gal-9 knockout B6 mice than in wild-type B6 mice. CONCLUSIONS These results may stimulate further investigation of the role of Gal-9 in haematopoiesis.
Collapse
Affiliation(s)
- Tetsuo Tsukamoto
- Department of Health Informatics, Niigata University of Health of Welfare, Niigata, Japan
- Department of Immunology, Faculty of Medicine, Kindai University, Osaka, Japan
| |
Collapse
|
2
|
Ma J, Wang S, Liu H, Li J, Cui S. Mechanism of the apoptosis of bone marrow erythroblasts in rats under hypobaric hypoxia. Blood Cells Mol Dis 2024:102861. [PMID: 38839522 DOI: 10.1016/j.bcmd.2024.102861] [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: 04/18/2024] [Revised: 05/27/2024] [Accepted: 05/28/2024] [Indexed: 06/07/2024]
Abstract
This study aimed to investigate the mechanism of the apoptosis of erythroblasts in rat bone marrow after the exposure to hypobaric hypoxia. Male SD rats were randomly divided into three groups. The hypoxic group was kept in a hypobaric hypoxia chamber at a simulated altitude of 5000 m for 7 and 28 days, respectively. The control group was kept at an altitude of 2260 m. We found that myeloid: erythroid (M:E) ratio was significantly lower after hypoxia exposure and the proportions of polychromatic erythroblasts and orthochromatic erythroblasts significantly increased compared to control group, along with significant increase in the proportion of CD71+ cells and apoptosis rate. The expression levels of caspase-3, Bax, and Cyt-C in CD71+ cells were higher after hypoxia exposure than those in control group, while there was no significant difference in the expression levels of TNFR and Fas. In conclusion, after exposure to hypobaric hypoxia the proliferation of peripheral blood and bone marrow erythroblasts in rats increased, and apoptosis also increased, indicating that bone marrow erythroblasts in rats is regulated by both proliferation and apoptosis, and the mitochondrial pathway is one of the important pathways for apoptosis.
Collapse
Affiliation(s)
- Jie Ma
- Department of Hematology, Qinghai University Affiliated Hospital, No. 29 Tongren Road, Xining, Qinghai, China
| | - Shengyan Wang
- Department of Hematology, Qinghai University Affiliated Hospital, No. 29 Tongren Road, Xining, Qinghai, China
| | - Huihui Liu
- Department of Hematology, Qinghai University Affiliated Hospital, No. 29 Tongren Road, Xining, Qinghai, China
| | - Jinjie Li
- Department of Hematology, Qinghai University Affiliated Hospital, No. 29 Tongren Road, Xining, Qinghai, China
| | - Sen Cui
- Department of Hematology, Qinghai University Affiliated Hospital, No. 29 Tongren Road, Xining, Qinghai, China.
| |
Collapse
|
3
|
Nazarov K, Perik-Zavodskii R, Perik-Zavodskaia O, Alrhmoun S, Volynets M, Shevchenko J, Sennikov S. Phenotypic Alterations in Erythroid Nucleated Cells of Spleen and Bone Marrow in Acute Hypoxia. Cells 2023; 12:2810. [PMID: 38132130 PMCID: PMC10741844 DOI: 10.3390/cells12242810] [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: 11/13/2023] [Revised: 12/08/2023] [Accepted: 12/09/2023] [Indexed: 12/23/2023] Open
Abstract
Hypoxia leads to metabolic changes at the cellular, tissue, and organismal levels. The molecular mechanisms for controlling physiological changes during hypoxia have not yet been fully studied. Erythroid cells are essential for adjusting the rate of erythropoiesis and can influence the development and differentiation of immune cells under normal and pathological conditions. We simulated high-altitude hypoxia conditions for mice and assessed the content of erythroid nucleated cells in the spleen and bone marrow under the existing microenvironment. For a pure population of CD71+ erythroid cells, we assessed the production of cytokines and the expression of genes that regulate the immune response. Our findings show changes in the cellular composition of the bone marrow and spleen during hypoxia, as well as changes in the composition of the erythroid cell subpopulations during acute hypoxic exposure in the form of a decrease in orthochromatophilic erythroid cells that are ready for rapid enucleation and the accumulation of their precursors. Cytokine production normally differs only between organs; this effect persists during hypoxia. In the bone marrow, during hypoxia, genes of the C-lectin pathway are activated. Thus, hypoxia triggers the activation of various adaptive and compensatory mechanisms in order to limit inflammatory processes and modify metabolism.
Collapse
Affiliation(s)
- Kirill Nazarov
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution “Research Institute of Fundamental and Clinical Immunology”, 630099 Novosibirsk, Russia; (K.N.); (R.P.-Z.); (O.P.-Z.); (S.A.); (M.V.); (J.S.)
| | - Roman Perik-Zavodskii
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution “Research Institute of Fundamental and Clinical Immunology”, 630099 Novosibirsk, Russia; (K.N.); (R.P.-Z.); (O.P.-Z.); (S.A.); (M.V.); (J.S.)
| | - Olga Perik-Zavodskaia
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution “Research Institute of Fundamental and Clinical Immunology”, 630099 Novosibirsk, Russia; (K.N.); (R.P.-Z.); (O.P.-Z.); (S.A.); (M.V.); (J.S.)
| | - Saleh Alrhmoun
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution “Research Institute of Fundamental and Clinical Immunology”, 630099 Novosibirsk, Russia; (K.N.); (R.P.-Z.); (O.P.-Z.); (S.A.); (M.V.); (J.S.)
- Department of Natural Sciences, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Marina Volynets
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution “Research Institute of Fundamental and Clinical Immunology”, 630099 Novosibirsk, Russia; (K.N.); (R.P.-Z.); (O.P.-Z.); (S.A.); (M.V.); (J.S.)
- Department of Natural Sciences, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Julia Shevchenko
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution “Research Institute of Fundamental and Clinical Immunology”, 630099 Novosibirsk, Russia; (K.N.); (R.P.-Z.); (O.P.-Z.); (S.A.); (M.V.); (J.S.)
| | - Sergey Sennikov
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution “Research Institute of Fundamental and Clinical Immunology”, 630099 Novosibirsk, Russia; (K.N.); (R.P.-Z.); (O.P.-Z.); (S.A.); (M.V.); (J.S.)
| |
Collapse
|
4
|
Doty RT, Lausted CG, Munday AD, Yang Z, Yan X, Meng C, Tian Q, Abkowitz JL. The transcriptomic landscape of normal and ineffective erythropoiesis at single-cell resolution. Blood Adv 2023; 7:4848-4868. [PMID: 37352261 PMCID: PMC10469080 DOI: 10.1182/bloodadvances.2023010382] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/15/2023] [Accepted: 06/07/2023] [Indexed: 06/25/2023] Open
Abstract
The anemias of myelodysplastic syndrome (MDS) and Diamond Blackfan anemia (DBA) are generally macrocytic and always reflect ineffective erythropoiesis yet result from diverse genetic mutations. To delineate shared mechanisms that lead to cell death, we studied the fate of single erythroid marrow cells from individuals with DBA or MDS-5q. We defined an unhealthy (vs healthy) differentiation trajectory using transcriptional pseudotime and cell surface proteins. The pseudotime trajectories diverge immediately after cells upregulate transferrin receptor (CD71), import iron, and initiate heme synthesis, although cell death occurs much later. Cells destined to die express high levels of heme-responsive genes, including ribosomal protein and globin genes, whereas surviving cells downregulate heme synthesis and upregulate DNA damage response, hypoxia, and HIF1 pathways. Surprisingly, 24% ± 12% of cells from control subjects follow the unhealthy trajectory, implying that heme might serve as a rheostat directing cells to live or die. When heme synthesis was inhibited with succinylacetone, more DBA cells followed the healthy trajectory and survived. We also noted high numbers of messages with retained introns that increased as erythroid cells matured, confirmed the rapid cycling of colony forming unit-erythroid, and demonstrated that cell cycle timing is an invariant property of differentiation stage. Including unspliced RNA in pseudotime determinations allowed us to reliably align independent data sets and accurately query stage-specific transcriptomic changes. MDS-5q (unlike DBA) results from somatic mutation, so many normal (unmutated) erythroid cells persist. By independently tracking erythroid differentiation of cells with and without chromosome 5q deletions, we gained insight into why 5q+ cells cannot expand to prevent anemia.
Collapse
Affiliation(s)
- Raymond T. Doty
- Division of Hematology, Department of Medicine, University of Washington, Seattle, WA
| | | | - Adam D. Munday
- Division of Hematology, Department of Medicine, University of Washington, Seattle, WA
| | - Zhantao Yang
- Division of Hematology, Department of Medicine, University of Washington, Seattle, WA
| | | | | | - Qiang Tian
- Institute for Systems Biology, Seattle, WA
| | - Janis L. Abkowitz
- Division of Hematology, Department of Medicine, University of Washington, Seattle, WA
| |
Collapse
|
5
|
Zhang Z, Wiencke JK, Kelsey KT, Koestler DC, Molinaro AM, Pike SC, Karra P, Christensen BC, Salas LA. Hierarchical deconvolution for extensive cell type resolution in the human brain using DNA methylation. Front Neurosci 2023; 17:1198243. [PMID: 37404460 PMCID: PMC10315586 DOI: 10.3389/fnins.2023.1198243] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 05/30/2023] [Indexed: 07/06/2023] Open
Abstract
Introduction The human brain comprises heterogeneous cell types whose composition can be altered with physiological and pathological conditions. New approaches to discern the diversity and distribution of brain cells associated with neurological conditions would significantly advance the study of brain-related pathophysiology and neuroscience. Unlike single-nuclei approaches, DNA methylation-based deconvolution does not require special sample handling or processing, is cost-effective, and easily scales to large study designs. Existing DNA methylation-based methods for brain cell deconvolution are limited in the number of cell types deconvolved. Methods Using DNA methylation profiles of the top cell-type-specific differentially methylated CpGs, we employed a hierarchical modeling approach to deconvolve GABAergic neurons, glutamatergic neurons, astrocytes, microglial cells, oligodendrocytes, endothelial cells, and stromal cells. Results We demonstrate the utility of our method by applying it to data on normal tissues from various brain regions and in aging and diseased tissues, including Alzheimer's disease, autism, Huntington's disease, epilepsy, and schizophrenia. Discussion We expect that the ability to determine the cellular composition in the brain using only DNA from bulk samples will accelerate understanding brain cell type composition and cell-type-specific epigenetic states in normal and diseased brain tissues.
Collapse
Affiliation(s)
- Ze Zhang
- Department of Epidemiology, Geisel School of Medicine, Dartmouth College, Lebanon, NH, United States
| | - John K. Wiencke
- Department of Neurological Surgery, Institute for Human Genetics, University of California, San Francisco, San Francisco, CA, United States
| | - Karl T. Kelsey
- Department of Epidemiology, Department of Pathology and Laboratory Medicine, Brown University School of Public Health, Providence, RI, United States
| | - Devin C. Koestler
- Department of Biostatistics and Data Science, University of Kansas Medical Center, Kansas City, KS, United States
| | - Annette M. Molinaro
- Department of Neurological Surgery, Institute for Human Genetics, University of California, San Francisco, San Francisco, CA, United States
| | - Steven C. Pike
- Department of Epidemiology, Geisel School of Medicine, Dartmouth College, Lebanon, NH, United States
- Department of Neurology, Geisel School of Medicine, Dartmouth College, Lebanon, NH, United States
| | - Prasoona Karra
- Department of Epidemiology, Geisel School of Medicine, Dartmouth College, Lebanon, NH, United States
| | - Brock C. Christensen
- Department of Epidemiology, Geisel School of Medicine, Dartmouth College, Lebanon, NH, United States
- Department of Molecular and Systems Biology, Geisel School of Medicine, Dartmouth College, Lebanon, NH, United States
| | - Lucas A. Salas
- Department of Epidemiology, Geisel School of Medicine, Dartmouth College, Lebanon, NH, United States
| |
Collapse
|
6
|
Song P, Cai YC, Chen MX, Chen SH, Chen JX. Enhanced phosphatidylserine exposure and erythropoiesis in Babesia microti-infected mice. Front Microbiol 2023; 13:1083467. [PMID: 36687590 PMCID: PMC9846230 DOI: 10.3389/fmicb.2022.1083467] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 12/08/2022] [Indexed: 12/02/2023] Open
Abstract
INTRODUCTION Babesia microti (B. microti) is the dominant species responsible for human babesiosis, which is associated with severe hemolytic anemia and splenomegaly because it infects mammalian erythrocytes. The actual prevalence of B. microti is thought to have been substantially underestimated. METHODS In this study, Bagg's albino/c (BALB/c) mice were intraperitoneally injected with B. microti-infected erythrocytes, and parasitemia was subsequently measured by calculating the proportion of infected erythrocytes. The ultrastructure of infected erythrocytes was observed using scanning and transmission electron microscopes. Quantifying phosphatidylserine (PS) exposure, oxidative stress, intracellular Ca2+, and erythropoiesis of erythrocytes were done using flow cytometry. The physiological indicators were analyzed using a Mindray BC-5000 Vet automatic hematology analyzer. RESULTS Of note, 40.7 ± 5.9% of erythrocytes changed their structure and shrunk in the B. microti-infected group. The percentage of annexin V-positive erythrocytes and the levels of reactive oxygen species (ROS) in the erythrocytes were higher in the B. microti-infected group than in the control group at 10 dpi. Significant splenomegaly and severe anemia were also observed following B. microti infection. The parasitemia level in the B. microti-infected splenectomized group was higher than that of the B. microti-infected sham group. The population of early erythroblasts increased, and the late erythroblasts decreased in both the bone marrow and spleen tissues of the B. microti-infected group at 10 dpi. DISCUSSION PS exposure and elevated ROS activities were hallmarks of eryptosis in the B. microti-infected group. This study revealed for the first time that B. microti could also induce eryptosis. At the higher parasitemia phase, the occurrence of severe anemia and significant changes in the abundance of erythroblasts in B. microti-infected mice group were established. The spleen plays a critical protective role in controlling B. microti infection and preventing anemia. B. microti infection could cause a massive loss of late erythroblasts and induce erythropoiesis.
Collapse
Affiliation(s)
- Peng Song
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China
- NHC Key Laboratory of Parasite and Vector Biology, Ministry of Public Health, Shanghai, China
- WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
- Hainan Tropical Diseases Research Center (Chinese Center for Tropical Diseases Research, Hainan), Haikou, Hainan, China
| | - Yu-Chun Cai
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China
- NHC Key Laboratory of Parasite and Vector Biology, Ministry of Public Health, Shanghai, China
- WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
| | - Mu-Xin Chen
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China
- NHC Key Laboratory of Parasite and Vector Biology, Ministry of Public Health, Shanghai, China
- WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
- Hainan Tropical Diseases Research Center (Chinese Center for Tropical Diseases Research, Hainan), Haikou, Hainan, China
| | - Shao-Hong Chen
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China
- NHC Key Laboratory of Parasite and Vector Biology, Ministry of Public Health, Shanghai, China
- WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
| | - Jia-Xu Chen
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China
- NHC Key Laboratory of Parasite and Vector Biology, Ministry of Public Health, Shanghai, China
- WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
- Hainan Tropical Diseases Research Center (Chinese Center for Tropical Diseases Research, Hainan), Haikou, Hainan, China
| |
Collapse
|
7
|
Cao Y, Zhu S, Yu B, Yao C. Single-cell RNA sequencing for traumatic spinal cord injury. FASEB J 2022; 36:e22656. [PMID: 36374259 DOI: 10.1096/fj.202200943r] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 09/28/2022] [Accepted: 11/01/2022] [Indexed: 11/16/2022]
Abstract
Traumatic spinal cord injury (tSCI) is a severe injury of the central nervous system (CNS) with complicated pathological microenvironment that results in hemorrhage, inflammation, and scar formation. The microenvironment of the injured spinal cord comprises heterogeneous neurons, glial cells, inflammatory cells, and stroma-related cells. Increasing evidence has indicated that the altered cellular and molecular microenvironment following tSCI is a key factor impeding functional recovery. Single-cell RNA sequencing (scRNA-seq) has provided deep insights into the dynamic cellular and molecular changes in the microenvironment by comprehensively characterizing the diversity of spinal cord cell types. Specifically, scRNA-seq enables the exploration of the molecular mechanisms underlying tSCI by elucidating intercellular communication in spinal cord samples between normal and injury conditions at a single-cell resolution. Here, we first described the pathological and physiological processes after tSCI and gave a brief introduction of the scRNA-seq technology. We then focused on the recent scRNA-seq researches in tSCI, which characterized diverse cell-type populations and specific cell-cell interactions in tSCI. In addition, we also highlighted some potential directions for the research of scRNA-seq in tSCI in the future.
Collapse
Affiliation(s)
- Yuqi Cao
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Shunxing Zhu
- Laboratory Animals Center, Nantong University, Nantong, China
| | - Bin Yu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Chun Yao
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| |
Collapse
|
8
|
Machlin JH, Shikanov A. Single-cell RNA-sequencing of retrieved human oocytes and eggs in clinical practice and for human ovarian cell atlasing. Mol Reprod Dev 2022; 89:597-607. [PMID: 36264989 PMCID: PMC9805491 DOI: 10.1002/mrd.23648] [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: 04/29/2022] [Revised: 10/06/2022] [Accepted: 10/09/2022] [Indexed: 01/18/2023]
Abstract
With the advancement of single-cell separation techniques and high-throughput sequencing platforms, single-cell RNA-sequencing (scRNA-seq) has emerged as a vital technology for understanding tissue and organ systems at cellular resolution. Through transcriptional analysis, it is possible to characterize unique or rare cell types, interpret their interactions, and reveal novel functional states or shifts in developmental stages. As such, this technology is uniquely suited for studying the cells within the human ovary. The ovary is a cellularly heterogeneous organ that houses follicles, the reproductive and endocrine unit that consists of an oocyte surrounded by hormone-producing support cells, as well as many other cell populations constituting stroma, vasculature, lymphatic, and immune components. Here we review studies that have utilized scRNA-seq technology to analyze cells from healthy human ovaries and discuss the single-cell isolation techniques used. We identified two overarching applications for scRNA-seq in the human ovary. The first applies this technology to investigate transcriptional differences in oocytes/eggs from patients undergoing in vitro fertilization treatments to ultimately improve clinical outcomes. The second utilizes scRNA-seq for the pursuit of creating a comprehensive single-cell atlas of the human ovary. The knowledge gained from these studies underscores the importance of scRNA-seq technologies in unlocking a new biological understanding of the human ovary.
Collapse
Affiliation(s)
- Jordan H. Machlin
- Program in Cellular and Molecular BiologyUniversity of MichiganAnn ArborMichiganUSA
| | - Ariella Shikanov
- Program in Cellular and Molecular BiologyUniversity of MichiganAnn ArborMichiganUSA
- Department of Biomedical EngineeringUniversity of MichiganAnn ArborMichiganUSA
- Department of Obstetrics and GynecologyUniversity of MichiganAnn ArborMichiganUSA
| |
Collapse
|
9
|
Weeda V, Mestrum SGC, Leers MPG. Flow Cytometric Identification of Hematopoietic and Leukemic Blast Cells for Tailored Clinical Follow-Up of Acute Myeloid Leukemia. Int J Mol Sci 2022; 23:ijms231810529. [PMID: 36142442 PMCID: PMC9506284 DOI: 10.3390/ijms231810529] [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: 07/26/2022] [Revised: 09/06/2022] [Accepted: 09/07/2022] [Indexed: 11/16/2022] Open
Abstract
Acute myeloid leukemia (AML) is a myeloid malignancy that is characterized by the accumulation of leukemic blast cells, which originate from hematopoietic stem cells that have undergone leukemic transformation and/or are more mature progenitors that have gained stemness features. Currently, no consensus exists for the flow cytometric identification of normal blast cells and their leukemic counterparts by their antigenic expression profile. Differentiating between the benign cells and the malignant cells is crucial for the further deployment of immunophenotype panels for the clinical follow-up of AML patients. This review provides an overview of immunophenotypic markers that allow the identification of leukemic blast cells in the bone marrow with multiparameter flow cytometry. This technique allows the identification of hematopoietic blast cells at the level of maturing cells by their antigen expression profile. While aberrant antigen expression of a single immunophenotypic marker cell cannot be utilized in order to differentiate leukemic blast cells from normal blast cells, combinations of multiple immunophenotypic markers can enable the distinction of normal and leukemic blast cells. The identification of these markers has provided new perspectives for tailored clinical follow-up, including therapy management, diagnostics, and prognostic purposes. The immunophenotypic marker panels, however, should be developed by carefully considering the variable antigen marker expression profile of individual patients.
Collapse
Affiliation(s)
- Vera Weeda
- Department of Clinical Chemistry & Hematology, Zuyderland Medical Centre, 6162BG Sittard-Geleen, The Netherlands
| | - Stefan G. C. Mestrum
- Department of Clinical Chemistry & Hematology, Zuyderland Medical Centre, 6162BG Sittard-Geleen, The Netherlands
- Department of Molecular Cell Biology, GROW-School for Oncology and Reproduction, Maastricht University Medical Centre, 6200MD Maastricht, The Netherlands
- Correspondence: ; Tel.: +31-6-36176124
| | - Math P. G. Leers
- Department of Clinical Chemistry & Hematology, Zuyderland Medical Centre, 6162BG Sittard-Geleen, The Netherlands
| |
Collapse
|
10
|
A Water-Soluble Polysaccharide from the Fibrous Root of Anemarrhena asphodeloides Bge. and Its Immune Enhancement Effect in Vivo and in Vitro. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:8723119. [PMID: 36124017 PMCID: PMC9482487 DOI: 10.1155/2022/8723119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 07/08/2022] [Accepted: 08/04/2022] [Indexed: 11/29/2022]
Abstract
Background The fibrous roots of Anemarrhena asphodeloides Bge. (FRAAB) are byproducts of the rhizome of Anemarrhena asphodeloides. Some studies have revealed secondary metabolic small molecules in FRAAB, but there are few reports on the polysaccharides of FRAAB (PFRAAB). Aim of the Study. The present study aimed to investigate the preliminary characterization and underlying mechanism of immune stimulation of PFRAAB. Materials and Methods The crude polysaccharide of FRAAB was obtained by hot water extraction and alcohol precipitation, and PFRAAB was purified by a diethylaminoethyl-52 (DEAE-52) cellulose chromatographic column and graphene dialysis membrane. The preliminary characterization of PFRAAB was studied by ultraviolet (UV) scanning and Fourier Transform Infrared Reflection (FTIR). The molecular weight and composition of PFRAAB were analysed by high-performance gel permeation chromatography (HPGPC) and high-performance liquid chromatography (HPLC), respectively. The immune stimulation of PFRAAB was investigated by using cyclophosphamide- (CCP-) treated mice and RAW264.7 cells. Results A water-soluble PFRAAB was obtained with a molecular weight of 115 kDa and was mainly composed of arabinose (ara), galactose (gal), glucose (glc), and mannose (man). Compared with CCP-induced mice, PFRAAB significantly (p < 0.05 or p < 0.01) increased the spleen and thymus index, ameliorated injury to the spleen and thymus, and evaluated immunoglobulin levels. In addition, PFRAAB also increased the secretion of nitric oxide (NO), interleukin-1β (IL-1β), tumour necrosis factor-α (TNF-α), and IL-6 in RAW264.7 cells and upregulated the expression of toll-like receptor 4 (TLR4), Myd88, nuclear factor kappa-B (NF-κB) P65, p–NF–κB P65, IKB-α, and p-IKB-α. Conclusion PFRAAB possesses immune stimulation activity and can be used as a potential resource for immune-enhancing drugs. Our present study provides a scientific basis for the comprehensive development of Anemarrhena asphodeloides medicinal plant resources.
Collapse
|
11
|
Xu Y, Wang B, Zhang M, Zhang J, Li Y, Jia P, Zhang H, Duan L, Li Y, Li Y, Qu X, Wang S, Liu D, Zhou W, Zhao H, Zhang H, Chen L, An X, Lu S, Zhang S. Carbon Dots as a Potential Therapeutic Agent for the Treatment of Cancer-Related Anemia. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2200905. [PMID: 35294781 DOI: 10.1002/adma.202200905] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/14/2022] [Indexed: 06/14/2023]
Abstract
Due to the adverse effects of erythropoietin (EPO) on cancer patient survival, it is necessary to develop new agents that can be used to efficiently manage and treat cancer-related anemia. In this study, novel distinctive carbon dots, J-CDs, derived from jujube are designed, synthesized, and characterized. Based on the obtained results, this material comprises sp2 and sp3 carbon atoms, as well as oxygen/nitrogen-based groups, and it specifically promotes the proliferation of erythroid cells by stimulating the self-renewal of erythroid progenitor cells in vitro and in vivo. Moreover, J-CDs have no discernible effects on tumor proliferation and metastasis, unlike EPO. Transcriptome profiling suggests that J-CDs upregulate the molecules involved in hypoxia response, and they also significantly increase the phosphorylation levels of STAT5, the major transducer of signals for erythroid progenitor cell proliferation. Overall, this study demonstrates that J-CDs effectively promote erythrocyte production without affecting tumor proliferation and metastasis; thus, they may be promising agents for the treatment of cancer-related anemia.
Collapse
Affiliation(s)
- Yuanlin Xu
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
- Department of Internal Medicine, Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, 45001, China
| | - Boyang Wang
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Mingming Zhang
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Jingxin Zhang
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Yudong Li
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Peijun Jia
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Huan Zhang
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
- Laboratory of Membrane Biology, New York Blood Center, New York, NY, 10065, USA
| | - Lulu Duan
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Yan Li
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Yating Li
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Xiaoli Qu
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Shihui Wang
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Donghao Liu
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Wenping Zhou
- Department of Internal Medicine, Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, 45001, China
| | - Huizhi Zhao
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Hengchao Zhang
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Lixiang Chen
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Xiuli An
- Laboratory of Membrane Biology, New York Blood Center, New York, NY, 10065, USA
| | - Siyu Lu
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Shijie Zhang
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
| |
Collapse
|
12
|
Bao Z, Zhu Y, Zhang K, Feng Y, Zhang M, Li R, Yu L. New insights into phenotypic heterogeneity for the distinct lipid accumulation of Schizochytrium sp. H016. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2022; 15:33. [PMID: 35337369 PMCID: PMC8957170 DOI: 10.1186/s13068-022-02126-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 03/01/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND Schizochytrium sp. is a marine heterotrophic protist and an important sustainable resource for high value-added docosahexaenoic acid in the future. The production of different phenotypes during the continuous subculture of Schizochytrium sp. results in a serious reduction in lipid yield and complicates the used of this strain in scientific research and industrial production. Hence, obtaining an improved understanding of the phenotypic differences and molecular mechanisms underlying the cell-to-cell heterogeneity of Schizochytrium sp. is necessary. RESULTS After continuous culture passage, Schizochytrium sp. H016 differentiated into two subpopulations with different morphologies and showed decreased capacity for lipid production. The presence of cell subpopulations with degraded lipid droplets led to a substantial decrease in overall lipid yield. Here, a rapid screening strategy based on fluorescence-activated cell sorting was proposed to classify and isolate subpopulations quickly in accordance with their lipid-producing capability. The final biomass and lipid yield of the subpopulation with high cell lipid content (i.e., H016-H) were 38.83 and 17.22 g/L, respectively, which were 2.07- and 5.38-fold higher than those of the subpopulation with low lipid content (i.e., H016-L), respectively. Subsequently, time‑resolved transcriptome analysis was performed to elucidate the mechanism of phenotypic heterogeneity in different subpopulations. Results showed that the expression of genes related to the cell cycle and lipid degradation was significantly upregulated in H016-L, whereas the metabolic pathways related to fatty acid synthesis and glyceride accumulation were remarkably upregulated in H016-H. CONCLUSION This study innovatively used flow cytometry combined with transcriptome technology to provide new insights into the phenotypic heterogeneity of different cell subpopulations of Schizochytrium sp. Furthermore, these results lay a strong foundation for guiding the breeding of oleaginous microorganisms with high lipid contents.
Collapse
Affiliation(s)
- Zhendong Bao
- Institute of Resource Biology and Biotechnology, Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan, 430074, China.,Key Laboratory of Molecular Biophysics, Ministry of Education, Wuhan, 430074, China.,Hubei Engineering Research Center for Both Edible and Medicinal Resources, Wuhan, 430074, China
| | - Yuanmin Zhu
- Institute of Resource Biology and Biotechnology, Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan, 430074, China.,Key Laboratory of Molecular Biophysics, Ministry of Education, Wuhan, 430074, China.,Hubei Engineering Research Center for Both Edible and Medicinal Resources, Wuhan, 430074, China
| | - Kai Zhang
- Institute of Resource Biology and Biotechnology, Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan, 430074, China.,Key Laboratory of Molecular Biophysics, Ministry of Education, Wuhan, 430074, China.,Hubei Engineering Research Center for Both Edible and Medicinal Resources, Wuhan, 430074, China
| | - Yumei Feng
- Institute of Resource Biology and Biotechnology, Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan, 430074, China.,Key Laboratory of Molecular Biophysics, Ministry of Education, Wuhan, 430074, China.,Hubei Engineering Research Center for Both Edible and Medicinal Resources, Wuhan, 430074, China
| | - Meng Zhang
- Institute of Resource Biology and Biotechnology, Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan, 430074, China.,Key Laboratory of Molecular Biophysics, Ministry of Education, Wuhan, 430074, China.,Hubei Engineering Research Center for Both Edible and Medicinal Resources, Wuhan, 430074, China
| | - Ruili Li
- Institute of Resource Biology and Biotechnology, Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan, 430074, China
| | - Longjiang Yu
- Institute of Resource Biology and Biotechnology, Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan, 430074, China. .,Key Laboratory of Molecular Biophysics, Ministry of Education, Wuhan, 430074, China. .,Hubei Engineering Research Center for Both Edible and Medicinal Resources, Wuhan, 430074, China.
| |
Collapse
|
13
|
Trends in biomedical analysis of red blood cells – Raman spectroscopy against other spectroscopic, microscopic and classical techniques. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2021.116481] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
14
|
Song P, Cai YC, Chen MX, Chen SH, Chen JX. Enhanced phosphatidylserine exposure and erythropoiesis in Babesia microti-infected mice. Front Microbiol 2022; 13:1083467. [PMID: 36687590 PMCID: PMC9846230 DOI: 10.3389/fmicb.2023.1083467] [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: 10/29/2022] [Accepted: 12/08/2022] [Indexed: 01/05/2023] Open
Abstract
Introduction Babesia microti (B. microti) is the dominant species responsible for human babesiosis, which is associated with severe hemolytic anemia and splenomegaly because it infects mammalian erythrocytes. The actual prevalence of B. microti is thought to have been substantially underestimated. Methods In this study, Bagg's albino/c (BALB/c) mice were intraperitoneally injected with B. microti-infected erythrocytes, and parasitemia was subsequently measured by calculating the proportion of infected erythrocytes. The ultrastructure of infected erythrocytes was observed using scanning and transmission electron microscopes. Quantifying phosphatidylserine (PS) exposure, oxidative stress, intracellular Ca2+, and erythropoiesis of erythrocytes were done using flow cytometry. The physiological indicators were analyzed using a Mindray BC-5000 Vet automatic hematology analyzer. Results Of note, 40.7 ± 5.9% of erythrocytes changed their structure and shrunk in the B. microti-infected group. The percentage of annexin V-positive erythrocytes and the levels of reactive oxygen species (ROS) in the erythrocytes were higher in the B. microti-infected group than in the control group at 10 dpi. Significant splenomegaly and severe anemia were also observed following B. microti infection. The parasitemia level in the B. microti-infected splenectomized group was higher than that of the B. microti-infected sham group. The population of early erythroblasts increased, and the late erythroblasts decreased in both the bone marrow and spleen tissues of the B. microti-infected group at 10 dpi. Discussion PS exposure and elevated ROS activities were hallmarks of eryptosis in the B. microti-infected group. This study revealed for the first time that B. microti could also induce eryptosis. At the higher parasitemia phase, the occurrence of severe anemia and significant changes in the abundance of erythroblasts in B. microti-infected mice group were established. The spleen plays a critical protective role in controlling B. microti infection and preventing anemia. B. microti infection could cause a massive loss of late erythroblasts and induce erythropoiesis.
Collapse
Affiliation(s)
- Peng Song
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China.,NHC Key Laboratory of Parasite and Vector Biology, Ministry of Public Health, Shanghai, China.,WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China.,Hainan Tropical Diseases Research Center (Chinese Center for Tropical Diseases Research, Hainan), Haikou, Hainan, China
| | - Yu-Chun Cai
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China.,NHC Key Laboratory of Parasite and Vector Biology, Ministry of Public Health, Shanghai, China.,WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
| | - Mu-Xin Chen
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China.,NHC Key Laboratory of Parasite and Vector Biology, Ministry of Public Health, Shanghai, China.,WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China.,Hainan Tropical Diseases Research Center (Chinese Center for Tropical Diseases Research, Hainan), Haikou, Hainan, China
| | - Shao-Hong Chen
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China.,NHC Key Laboratory of Parasite and Vector Biology, Ministry of Public Health, Shanghai, China.,WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
| | - Jia-Xu Chen
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China.,NHC Key Laboratory of Parasite and Vector Biology, Ministry of Public Health, Shanghai, China.,WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China.,Hainan Tropical Diseases Research Center (Chinese Center for Tropical Diseases Research, Hainan), Haikou, Hainan, China
| |
Collapse
|
15
|
Mao X, Zhang X, Zheng X, Chen Y, Xuan Z, Huang P. Curcumin suppresses LGR5(+) colorectal cancer stem cells by inducing autophagy and via repressing TFAP2A-mediated ECM pathway. J Nat Med 2021; 75:590-601. [PMID: 33713277 PMCID: PMC8159825 DOI: 10.1007/s11418-021-01505-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 03/03/2021] [Indexed: 01/24/2023]
Abstract
Abstract Colorectal cancer stem cells (CSCs) have the potential for self-renewal, proliferation, and differentiation. And LGR5 is a stem cell marker gene of colorectal cancer. Curcumin can suppress oncogenicity of many cancer cells, yet the effect and mechanism of curcumin in LGR5(+) colorectal cancer stem cells (CSCs) have not been studied. In this study, we studied the effect of curcumin on LGR5(+) colorectal CSCs using the experiments of tumorsphere formation, cell viability and cell apoptosis. Then autophagy analysis, RNA-Seq, and real-time PCR were used to identify the mechanism responsible for the inhibition of LGR5(+) colorectal CSCs. Our results showed that curcumin inhibited tumorsphere formation, decreased cell viability in a dose-dependent manner, and also promoted apoptosis of LGR5(+) colorectal CSCs. Next, we found curcumin induced autophagy of LGR5(+) colorectal CSCs. When LGR5(+) colorectal CSCs were co-treated with curcumin and the autophagy inhibitor (hydroxychloroquine), curcumin-induced cell proliferation inhibition decreased. In addition, we also found that curcumin inhibited the extracellular matrix (ECM)-receptor interaction pathway via the downregulation of the following genes: GP1BB, COL9A3, COMP, AGRN, ITGB4, LAMA5, COL2A1, ITGB6, ITGA1, and TNC. Further, these genes were transcriptionally regulated by TFAP2A, and the high expression of TFAP2A was associated with poor prognosis in colorectal cancer. In conclusion, curcumin suppressed LGR5(+) colorectal CSCs, potentially by inducing autophagy and repressing the oncogenic TFAP2A-mediated ECM pathway. Graphic abstract ![]()
Collapse
Affiliation(s)
- Xiaohong Mao
- Department of Pharmacy, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, 310014, China
| | - Xin Zhang
- Department of Pathology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, 310014, China
| | - Xiaowei Zheng
- Department of Pharmacy, Zhejiang Cancer Hospital, Hangzhou, 310022, China
| | - Yongwu Chen
- Department of Pharmacy, Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, 230036, China
| | - Zixue Xuan
- Department of Pharmacy, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, 310014, China.
| | - Ping Huang
- Department of Pharmacy, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, 310014, China.
| |
Collapse
|
16
|
Putative regulators for the continuum of erythroid differentiation revealed by single-cell transcriptome of human BM and UCB cells. Proc Natl Acad Sci U S A 2020; 117:12868-12876. [PMID: 32457162 DOI: 10.1073/pnas.1915085117] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Fine-resolution differentiation trajectories of adult human hematopoietic stem cells (HSCs) involved in the generation of red cells is critical for understanding dynamic developmental changes that accompany human erythropoiesis. Using single-cell RNA sequencing (scRNA-seq) of primary human terminal erythroid cells (CD34-CD235a+) isolated directly from adult bone marrow (BM) and umbilical cord blood (UCB), we documented the transcriptome of terminally differentiated human erythroblasts at unprecedented resolution. The insights enabled us to distinguish polychromatic erythroblasts (PolyEs) at the early and late stages of development as well as the different development stages of orthochromatic erythroblasts (OrthoEs). We further identified a set of putative regulators of terminal erythroid differentiation and functionally validated three of the identified genes, AKAP8L, TERF2IP, and RNF10, by monitoring cell differentiation and apoptosis. We documented that knockdown of AKAP8L suppressed the commitment of HSCs to erythroid lineage and cell proliferation and delayed differentiation of colony-forming unit-erythroid (CFU-E) to the proerythroblast stage (ProE). In contrast, the knockdown of TERF2IP and RNF10 delayed differentiation of PolyE to OrthoE stage. Taken together, the convergence and divergence of the transcriptional continuums at single-cell resolution underscore the transcriptional regulatory networks that underlie human fetal and adult terminal erythroid differentiation.
Collapse
|
17
|
Detection and Monitoring of Stem Cell Differentiation Using Nanotechnology. Methods Mol Biol 2019. [PMID: 31802433 DOI: 10.1007/7651_2019_272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Stem cell differentiation and pluripotency are important stages in the regenerative medicine. The design and fabrication of user-friendly approach to save cost and time as well as monitor this process is crucial. Surface-enhanced Raman spectroscopy (SERS) is a sensitive technique to fabricate smart sensors for biological applications. In this technique, double enhancement effect on SERS signals is induced by utilizing graphene oxide (GO)-encapsulated gold nanoparticles (GNPs). The undifferentiated neural stem cells (NSCs) produced Raman peaks which were 3.5 times higher than those obtained from normal metal structures. The surface decorated using 3D GO-encapsulated GNPs was an effective, cost-saving, and nondestructive tool for distinguishing the differentiation state of NSCs. Moreover, the substrate composed of 3D GO-encapsulated gold nanoparticles was also effective for distinguishing the differentiation state of single NSC by using electrochemical and electrical techniques. Therefore, the recommended technique can be utilized as a powerful nondestructive in situ monitoring tool for the identification of the differentiation potential of various kinds of stem cells.
Collapse
|
18
|
Zhou Z, Ma D, Liu P, Wang P, Wei D, Yu K, Li P, Fang Q, Wang J. Deletion of HO-1 blocks development of B lymphocytes in mice. Cell Signal 2019; 63:109378. [PMID: 31369826 DOI: 10.1016/j.cellsig.2019.109378] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 07/25/2019] [Accepted: 07/27/2019] [Indexed: 12/29/2022]
Abstract
B lymphocytes, a key cluster of cells composing the immune system, can protect against abnormal biological factors. Heme oxygenase-1 (HO-1) plays important roles in cell proliferation and immune regulation, but its effects on the development and growth of B lymphocytes are still unknown. Herein, the count of B lymphocytes in HO-1 gene knockout (HO-1+/-) mice was significantly lower than that of the HO-1 gene wild-type (HO-1WT) mice. Meanwhile, the cell count of HO-1+/- mice did not recover after irradiation for one week, due to the G0/G1 phase arrest of Pro-B cells and the augmented apoptosis of Pre-B cells. Up-regulation of HO-1 by lentivirus attenuated the Pro-B cell cycle arrest and Pre-B cell apoptosis. To understand the molecular mechanism by which HO-1 knockout blocked B lymphocyte development, protein-to-protein interaction network and Western blot were used. The PI3K/AKT signaling pathway mediated the regulatory effects of HO-1 on B lymphocytes. In conclusion, HO-1 is a crucial transcriptional repressor for B cell development.
Collapse
Affiliation(s)
- Zhen Zhou
- Department of Hematology, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China; Department of Pharmacy, Affiliated Baiyun Hospital of Guizhou Medical University, Guiyang 550004, China; Department of Pharmacy, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - Dan Ma
- Department of Hematology, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China; Key Laboratory of Hematological Disease Diagnostic and Treat Centre of Guizhou Province, Guiyang 550004, China; Department of Hematology, Guizhou Provincial Laboratory of Hematopoietic Stem Cell Transplantation Center, Guiyang 550004, China
| | - Ping Liu
- Department of Hematology, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China; Key Laboratory of Hematological Disease Diagnostic and Treat Centre of Guizhou Province, Guiyang 550004, China; Department of Hematology, Guizhou Provincial Laboratory of Hematopoietic Stem Cell Transplantation Center, Guiyang 550004, China
| | - Ping Wang
- Department of Hematology, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China; Key Laboratory of Hematological Disease Diagnostic and Treat Centre of Guizhou Province, Guiyang 550004, China; Department of Hematology, Guizhou Provincial Laboratory of Hematopoietic Stem Cell Transplantation Center, Guiyang 550004, China
| | - Danna Wei
- Department of Hematology, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China; Key Laboratory of Hematological Disease Diagnostic and Treat Centre of Guizhou Province, Guiyang 550004, China; Department of Hematology, Guizhou Provincial Laboratory of Hematopoietic Stem Cell Transplantation Center, Guiyang 550004, China
| | - Kunling Yu
- Department of Hematology, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China; Key Laboratory of Hematological Disease Diagnostic and Treat Centre of Guizhou Province, Guiyang 550004, China; Department of Hematology, Guizhou Provincial Laboratory of Hematopoietic Stem Cell Transplantation Center, Guiyang 550004, China
| | - Peifan Li
- Department of Psychiatry, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - Qin Fang
- Department of Pharmacy, Affiliated Baiyun Hospital of Guizhou Medical University, Guiyang 550004, China; Department of Pharmacy, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - Jishi Wang
- Department of Hematology, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China; Key Laboratory of Hematological Disease Diagnostic and Treat Centre of Guizhou Province, Guiyang 550004, China; Department of Hematology, Guizhou Provincial Laboratory of Hematopoietic Stem Cell Transplantation Center, Guiyang 550004, China.
| |
Collapse
|