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Gumede DB, Abrahamse H, Houreld NN. Targeting Wnt/β-catenin signaling and its interplay with TGF-β and Notch signaling pathways for the treatment of chronic wounds. Cell Commun Signal 2024; 22:244. [PMID: 38671406 PMCID: PMC11046856 DOI: 10.1186/s12964-024-01623-9] [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: 02/29/2024] [Accepted: 04/20/2024] [Indexed: 04/28/2024] Open
Abstract
Wound healing is a tightly regulated process that ensures tissue repair and normal function following injury. It is modulated by activation of pathways such as the transforming growth factor-beta (TGF-β), Notch, and Wnt/β-catenin signaling pathways. Dysregulation of this process causes poor wound healing, which leads to tissue fibrosis and ulcerative wounds. The Wnt/β-catenin pathway is involved in all phases of wound healing, primarily in the proliferative phase for formation of granulation tissue. This review focuses on the role of the Wnt/β-catenin signaling pathway in wound healing, and its transcriptional regulation of target genes. The crosstalk between Wnt/β-catenin, Notch, and the TGF-β signaling pathways, as well as the deregulation of Wnt/β-catenin signaling in chronic wounds are also considered, with a special focus on diabetic ulcers. Lastly, we discuss current and prospective therapies for chronic wounds, with a primary focus on strategies that target the Wnt/β-catenin signaling pathway such as photobiomodulation for healing diabetic ulcers.
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Affiliation(s)
- Dimakatso B Gumede
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, 2028, South Africa
| | - Heidi Abrahamse
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, 2028, South Africa
| | - Nicolette N Houreld
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, 2028, South Africa.
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Jiang XM, Xin QL, Liu K, Peng XF, Han S, Zhang LY, Liu W, Xiao GF, Li H, Zhang LK. Regulation of the WNT-CTNNB1 signaling pathway by severe fever with thrombocytopenia syndrome virus in a cap-snatching manner. mBio 2023; 14:e0168823. [PMID: 37882780 PMCID: PMC10746258 DOI: 10.1128/mbio.01688-23] [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: 07/07/2023] [Accepted: 09/14/2023] [Indexed: 10/27/2023] Open
Abstract
IMPORTANCE One of the conserved mechanisms at the stage of genome transcription of segmented negative-strand RNA viruses (sNSVs) is the cap-snatching process, which is vital for sNSVs transcription and provides drugable targets for the development of antivirals. However, the specificity of RNAs snatched by sNSV is still unclear. By transcriptomics analysis of whole blood samples from SFTS patients, we found WNT-CTNNB1 signaling pathway was regulated according to the course of the disease. We then demonstrated that L protein of severe fever with thrombocytopenia syndrome virus (SFTSV) could interact with mRNAs of WNT-CTNNB1 signaling pathway-related gene, thus affecting WNT-CTNNB1 signaling pathway through its cap-snatching activity. Activation of WNT-CTNNB1 signaling pathway enhanced SFTSV replication, while inhibition of this pathway decreased SFTSV replication in vitro and in vivo. These findings suggest that WNT-associated genes may be the substrate for SFTSV "cap-snatching", and indicate a conserved sNSVs replication mechanism involving WNT-CTNNB1 signaling.
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Affiliation(s)
- Xia-Ming Jiang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, Hubei, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Qi-Lin Xin
- University of Lyon, INRAE, EPHE, IVPC, Lyon, France
| | - Kai Liu
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, China
- National Engineering Research Center for the Emergency Drug, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Xue-Fang Peng
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Shuo Han
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Ling-Yu Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Geng-Fu Xiao
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, Hubei, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Hao Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Lei-Ke Zhang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, Hubei, China
- University of Chinese Academy of Sciences, Beijing, China
- Hubei Jiangxia Laboratory, Wuhan, China
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3
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Yalcin BH, Macas J, Wiercinska E, Harter PN, Fawaz M, Schmachtel T, Ghiro I, Bieniek E, Kosanovic D, Thom S, Fruttiger M, Taketo MM, Schermuly RT, Rieger MA, Plate KH, Bonig H, Liebner S. Wnt/β-Catenin-Signaling Modulates Megakaryopoiesis at the Megakaryocyte-Erythrocyte Progenitor Stage in the Hematopoietic System. Cells 2023; 12:2765. [PMID: 38067194 PMCID: PMC10706863 DOI: 10.3390/cells12232765] [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: 09/11/2023] [Revised: 11/20/2023] [Accepted: 11/29/2023] [Indexed: 12/18/2023] Open
Abstract
The bone marrow (BM) hematopoietic system (HS) gives rise to blood cells originating from hematopoietic stem cells (HSCs), including megakaryocytes (MKs) and red blood cells (erythrocytes; RBCs). Many steps of the cell-fate decision remain to be elucidated, being important for cancer treatment. To explore the role of Wnt/β-catenin for MK and RBC differentiation, we activated β-catenin signaling in platelet-derived growth factor b (Pdgfb)-expressing cells of the HS using a Cre-lox approach (Ctnnb1BM-GOF). FACS analysis revealed that Pdgfb is mainly expressed by megakaryocytic progenitors (MKPs), MKs and platelets. Recombination resulted in a lethal phenotype in mutants (Ctnnb1BM-GOFwt/fl, Ctnnb1BM-GOFfl/fl) 3 weeks after tamoxifen injection, showing an increase in MKs in the BM and spleen, but no pronounced anemia despite reduced erythrocyte counts. BM transplantation (BMT) of Ctnnb1BM-GOF BM into lethally irradiated wildtype recipients (BMT-Ctnnb1BM-GOF) confirmed the megakaryocytic, but not the lethal phenotype. CFU-MK assays in vitro with BM cells of Ctnnb1BM-GOF mice supported MK skewing at the expense of erythroid colonies. Molecularly, the runt-related transcription factor 1 (RUNX1) mRNA, known to suppress erythropoiesis, was upregulated in Ctnnb1BM-GOF BM cells. In conclusion, β-catenin activation plays a key role in cell-fate decision favoring MK development at the expense of erythroid production.
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Affiliation(s)
- Burak H. Yalcin
- Institute of Neurology (Edinger Institute), University Hospital Frankfurt, Goethe University, 60590 Frankfurt am Main, Germany (J.M.); (I.G.); (K.H.P.)
| | - Jadranka Macas
- Institute of Neurology (Edinger Institute), University Hospital Frankfurt, Goethe University, 60590 Frankfurt am Main, Germany (J.M.); (I.G.); (K.H.P.)
| | - Eliza Wiercinska
- Institute for Transfusion Medicine and Immunohaematology, and DRK-Blutspendedienst BaWüHe, Goethe University Frankfurt, 60528 Frankfurt am Main, Germany
| | - Patrick N. Harter
- Institute of Neurology (Edinger Institute), University Hospital Frankfurt, Goethe University, 60590 Frankfurt am Main, Germany (J.M.); (I.G.); (K.H.P.)
| | - Malak Fawaz
- Department of Medicine, Hematology/Oncology, University Hospital Frankfurt, Goethe University, 60590 Frankfurt am Main, Germany (M.A.R.)
| | - Tessa Schmachtel
- Department of Medicine, Hematology/Oncology, University Hospital Frankfurt, Goethe University, 60590 Frankfurt am Main, Germany (M.A.R.)
| | - Ilaria Ghiro
- Institute of Neurology (Edinger Institute), University Hospital Frankfurt, Goethe University, 60590 Frankfurt am Main, Germany (J.M.); (I.G.); (K.H.P.)
| | - Ewa Bieniek
- German Center for Lung Research (DZL), Department of Internal Medicine, Excellence Cluster Cardio-Pulmonary Institute (CPI), Justus Liebig University of Giessen, Aulweg 130, 35392 Giessen, Germany; (E.B.); (D.K.)
| | - Djuro Kosanovic
- German Center for Lung Research (DZL), Department of Internal Medicine, Excellence Cluster Cardio-Pulmonary Institute (CPI), Justus Liebig University of Giessen, Aulweg 130, 35392 Giessen, Germany; (E.B.); (D.K.)
| | - Sonja Thom
- Institute of Neurology (Edinger Institute), University Hospital Frankfurt, Goethe University, 60590 Frankfurt am Main, Germany (J.M.); (I.G.); (K.H.P.)
| | | | - Makoto M. Taketo
- Kyoto University Hospital-iACT Graduate School of Medicine, Kyoto University, Kyoto 06-8501, Japan
| | - Ralph T. Schermuly
- German Center for Lung Research (DZL), Department of Internal Medicine, Excellence Cluster Cardio-Pulmonary Institute (CPI), Justus Liebig University of Giessen, Aulweg 130, 35392 Giessen, Germany; (E.B.); (D.K.)
| | - Michael A. Rieger
- Department of Medicine, Hematology/Oncology, University Hospital Frankfurt, Goethe University, 60590 Frankfurt am Main, Germany (M.A.R.)
- German Cancer Consortium (DKTK) at the German Cancer Research Center, 69120 Heidelberg, Germany
- Frankfurt Cancer Institute (FCI), 60596 Frankfurt am Main, Germany
- Excellence Cluster Cardio-Pulmonary Institute (CPI), Partner Site Frankfurt, 60590 Frankfurt am Main, Germany
| | - Karl H. Plate
- Institute of Neurology (Edinger Institute), University Hospital Frankfurt, Goethe University, 60590 Frankfurt am Main, Germany (J.M.); (I.G.); (K.H.P.)
- Frankfurt Cancer Institute (FCI), 60596 Frankfurt am Main, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Frankfurt/Mainz, 60590 Frankfurt am Main, Germany
| | - Halvard Bonig
- Institute for Transfusion Medicine and Immunohaematology, and DRK-Blutspendedienst BaWüHe, Goethe University Frankfurt, 60528 Frankfurt am Main, Germany
- Department of Medicine/Division of Hematology, University of Washington, Seattle, WA 98195, USA
| | - Stefan Liebner
- Institute of Neurology (Edinger Institute), University Hospital Frankfurt, Goethe University, 60590 Frankfurt am Main, Germany (J.M.); (I.G.); (K.H.P.)
- Excellence Cluster Cardio-Pulmonary Institute (CPI), Partner Site Frankfurt, 60590 Frankfurt am Main, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Frankfurt/Mainz, 60590 Frankfurt am Main, Germany
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Jiang J, Li W, Zhou L, Liu D, Wang Y, An J, Qiao S, Xie Z. Platelet ITGA2B inhibits caspase-8 and Rip3/Mlkl-dependent platelet death though PTPN6 during sepsis. iScience 2023; 26:107414. [PMID: 37554440 PMCID: PMC10404729 DOI: 10.1016/j.isci.2023.107414] [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: 05/17/2023] [Revised: 07/04/2023] [Accepted: 07/14/2023] [Indexed: 08/10/2023] Open
Abstract
Platelets play an important role in the pathogenesis of sepsis and platelet transfusion is a therapeutic option for sepsis patients, although the exact mechanisms have not been elucidated so far. ITGA2B encodes the αIIb protein in platelets, and its upregulation in sepsis is associated with increased mortality rate. Here, we generated a Itga2b (Q887X) knockin mouse, which significantly reduced ITGA2B expression of platelet and megakaryocyte. The decrease of ITGA2B level aggravated the death of septic mice. We analyzed the transcriptomic profiles of the platelets using RNA sequencing. Our findings suggest that ITGA2B upregulates PTPN6 in megakaryocytes via the transcription factors Nfkb1 and Rel. Furthermore, PTPN6 inhibits platelet apoptosis and necroptosis during sepsis by targeting the Ripk1/Ripk3/Mlkl and caspase-8 pathways. This prevents Kupffer cells from rapidly clearing activated platelets, and eventually maintains vascular integrity during sepsis. Our findings indicate a new function of ITGA2B in the regulation of platelet death during sepsis.
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Affiliation(s)
- Jiang Jiang
- Department of Nuclear Medicine, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Wei Li
- Institute of Clinical Medicine Research, Suzhou Hospital, Affiliated Hospital of Medical School, Nanjing University, Suzhou, China
| | - Lu Zhou
- Hematology Department, Affiliated Hospital of Nantong University, Nantong, China
| | - Dengping Liu
- Suzhou Center for Disease Control and Prevention, Suzhou, China
| | - Yuanyuan Wang
- Department of Intensive Care Unit, Suzhou Hospital, Affiliated Hospital of Medical School, Nanjing University, Suzhou, China
| | - Jianzhong An
- Institute of Clinical Medicine Research, Suzhou Hospital, Affiliated Hospital of Medical School, Nanjing University, Suzhou, China
| | - Shigang Qiao
- Institute of Clinical Medicine Research, Suzhou Hospital, Affiliated Hospital of Medical School, Nanjing University, Suzhou, China
- Faculty of Anesthesiology, Suzhou Hospital, Affiliated Hospital of Medical School, Nanjing University, Suzhou, China
| | - Zhanli Xie
- Institute of Clinical Medicine Research, Suzhou Hospital, Affiliated Hospital of Medical School, Nanjing University, Suzhou, China
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Jo JH, Ok SM, Kim DK, Kim YM, Park JU, Jung DH, Kim HJ, Seong HA, Cho HJ, Nah J, Kim S, Fu H, Redon CE, Aladjem MI, Jang SM. RepID represses megakaryocytic differentiation by recruiting CRL4A-JARID1A at DAB2 promoter. RESEARCH SQUARE 2023:rs.3.rs-3045396. [PMID: 37461562 PMCID: PMC10350187 DOI: 10.21203/rs.3.rs-3045396/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/24/2023]
Abstract
Background Megakaryocytes (MKs) are platelet precursors, which arise from hematopoietic stem cells (HSCs). While MK lineage commitment and differentiation are accompanied by changes in gene expression, many factors that modulate megakaryopoiesis remain to be uncovered. Replication origin binding protein (RepID) which has multiple histone-code reader including bromodomain, cryptic Tudor domain and WD40 domains and Cullin 4-RING ubiquitin ligase complex (CRL4) recruited to chromatin mediated by RepID have potential roles in gene expression changes via epigenetic regulations. We aimed to investigate whether RepID-CRL4 participates in transcriptional changes required for MK differentiation. Methods The PCR array was performed using cDNAs derived from RepID-proficient or RepID-deficient K562 erythroleukemia cell lines. Correlation between RepID and DAB2 expression was examined in the Cancer Cell Line Encyclopedia (CCLE) through the CellMinerCDB portal. The acceleration of MK differentiation in RepID-deficient K562 cells was determined by estimating cell sizes as well as counting multinucleated cells known as MK phenotypes, and by qRT-PCR analysis to validate transcripts of MK markers using phorbol 12-myristate 13-acetate (PMA)-mediated MK differentiation condition. Interaction between CRL4 and histone methylation modifying enzymes were investigated using BioGRID database, immunoprecipitation and proximity ligation assay. Alterations of expression and chromatin binding affinities of RepID, CRL4 and histone methylation modifying enzymes were investigated using subcellular fractionation followed by immunoblotting. RepID-CRL4-JARID1A-based epigenetic changes on DAB2 promoter were analyzed by chromatin-immunoprecipitation and qPCR analysis. Results RepID-deficient K562 cells highly expressing MK markers showed accelerated MKs differentiation exhibiting increases in cell size, lobulated nuclei together with reaching maximum levels of MK marker expression earlier than RepID-proficient K562 cells. Recovery of WD40 domain-containing RepID constructs in RepID-deficient background repressed DAB2 expression. CRL4A formed complex with histone H3K4 demethylase JARID1A in soluble nucleus and loaded to the DAB2 promoter in a RepID-dependent manner during proliferation condition. RepID, CRL4A, and JARID1A were dissociated from the chromatin during MK differentiation, leading to euchromatinization of the DAB2 promoter. Conclusion This study uncovered a role for the RepID-CRL4A-JARID1A pathway in the regulation of gene expression for MK differentiation, which can form the basis for the new therapeutic approaches to induce platelet production.
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Lan Q, Du C, Xiong J, Wu Y, Liao W, Liu C, Chen J, Ran L, Wang Y, Wang Y, Wang J, Zhao J, Yang K. Renal Klotho safeguards platelet lifespan in advanced chronic kidney disease through restraining Bcl-xL ubiquitination and degradation. J Thromb Haemost 2022; 20:2972-2987. [PMID: 36087344 DOI: 10.1111/jth.15876] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/31/2022] [Accepted: 09/06/2022] [Indexed: 01/13/2023]
Abstract
BACKGROUND Thrombosis and hemorrhage as two opposite pathologies are prevalent within the chronic kidney disease (CKD) population. Platelet homeostasis, which positions centrally in their pathogenesis, varies among the CKD population, while the underlying mechanism is poorly understood. OBJECTIVE To investigate the change character and mechanism of platelet homeostasis in CKD and its association with renal Klotho deficiency. METHODS The change character of platelet homeostasis and its association with renal Klotho deficiency were determined based on a cohort study as well as CKD mice and Klotho-deficient mice with CKD. The effects on thrombopoiesis and platelet lifespan were examined by flow cytometry and platelet transfer. The underlying mechanism was explored by proteomics, flow cytometry, western blot, and immunoprecipitation. RESULTS We show that platelet count declines both in patient and mouse models with advanced CKD (Adv-CKD) and is positively associated with circulating Klotho levels. Mechanistically, we identify that ubiquitin ligase UBE2O governs Bcl-xL ubiquitination and degradation in platelets, whereas Adv-CKD-induced oxidative stress in platelets stimulates p38MAPK to promote Bcl-xL phosphorylation, which facilitates UBE2O binding to Bcl-xL and subsequent Bcl-xL degradation. Consequently, platelet lifespan is shortened in Adv-CKD, culminating in platelet count decline. However, kidney-secreted soluble Klotho protein restricts oxidative stress in platelets, thereby preserving Bcl-xL expression and platelet lifespan. CONCLUSIONS Our findings uncover the mechanism of platelet count decline in Adv-CKD and identify renal Klotho as a long-range regulator of platelet lifespan, which not only provide a molecular mechanism underlying CKD-associated thrombocytopenia and hemorrhage but also offer a promising therapy choice.
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Affiliation(s)
- Qigang Lan
- Department of Nephrology, The Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Changhong Du
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Jiachuan Xiong
- Department of Nephrology, The Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yiding Wu
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Weinian Liao
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Chaonan Liu
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Jun Chen
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Li Ran
- Department of Nephrology, The Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yue Wang
- Department of Nephrology, The Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yaqin Wang
- Department of Nephrology, The Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Junping Wang
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Jinghong Zhao
- Department of Nephrology, The Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Ke Yang
- Department of Nephrology, The Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
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Sung HJ, Jeong SH, Kang JY, Kim C, Nam YJ, Kim JY, Choi JY, Lee HJ, Lee YS, Kim EY, Baek YW, Lee H, Lee JH. Hematotoxic Effect of Respiratory Exposure to PHMG-p and Its Integrated Genetic Analysis. TOXICS 2022; 10:694. [PMID: 36422902 PMCID: PMC9693004 DOI: 10.3390/toxics10110694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/14/2022] [Accepted: 11/15/2022] [Indexed: 06/16/2023]
Abstract
Polyhexamethylene guanidine phosphate (PHMG-p), the main ingredient of humidifier disinfectants, circulates systemically through the lungs; however, its toxicological assessment has been primarily limited to pulmonary disease. Herein, we investigated the possible abnormalities in hematopoietic function 20 weeks after intratracheal instillation of PHMG-p in a rat model. Notable abnormalities were found out in the peripheral blood cell count and bone marrow (BM) biopsy, while RNA sequencing of BM tissue revealed markedly altered gene expression. Furthermore, signaling involved in hematopoietic dysfunction was predicted by analyzing candidate genes through Ingenuity Pathway Analysis (IPA) program. Respiratory PHMG-p exposure significantly decreased monocyte and platelet (PLT) counts and total protein, while significantly increasing hemoglobin and hematocrit levels in peripheral blood. Histopathological analysis of the BM revealed a reduced number of megakaryocytes, with no significant differences in spleen and liver weight to body weight. Moreover, PHMG-p exposure significantly activated estrogen receptor signaling and RHOA signaling, and inhibited RHOGDI signaling. In IPA analysis, candidate genes were found to be strongly related to 'hematological system development and function' and 'hematological disease.' Accordingly, our results suggest that PHMG-p could affect hematopoiesis, which participates in monocyte differentiation and PLT production, and may induce hematologic diseases via the respiratory tract.
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Affiliation(s)
- Hwa Jung Sung
- Department of Oncology and Hematology, Ansan Hospital, Korea University College of Medicine, Ansan-si 15355, Gyeonggi, Republic of Korea
| | - Sang Hoon Jeong
- Medical Science Research Center, Ansan Hospital, Korea University College of Medicine, Ansan-si 15355, Gyeonggi, Republic of Korea
| | - Ja Young Kang
- Medical Science Research Center, Ansan Hospital, Korea University College of Medicine, Ansan-si 15355, Gyeonggi, Republic of Korea
| | - Cherry Kim
- Department of Radiology, Ansan Hospital, Korea University College of Medicine, Ansan-si 15355, Gyeonggi, Republic of Korea
| | - Yoon Jeong Nam
- Medical Science Research Center, Ansan Hospital, Korea University College of Medicine, Ansan-si 15355, Gyeonggi, Republic of Korea
| | - Jae Young Kim
- Medical Science Research Center, Ansan Hospital, Korea University College of Medicine, Ansan-si 15355, Gyeonggi, Republic of Korea
| | - Jin Young Choi
- Medical Science Research Center, Ansan Hospital, Korea University College of Medicine, Ansan-si 15355, Gyeonggi, Republic of Korea
| | - Hye Jin Lee
- Medical Science Research Center, Ansan Hospital, Korea University College of Medicine, Ansan-si 15355, Gyeonggi, Republic of Korea
| | - Yu Seon Lee
- Medical Science Research Center, Ansan Hospital, Korea University College of Medicine, Ansan-si 15355, Gyeonggi, Republic of Korea
| | - Eun Yeob Kim
- Medical Science Research Center, Ansan Hospital, Korea University College of Medicine, Ansan-si 15355, Gyeonggi, Republic of Korea
| | - Yong Wook Baek
- Humidifier Disinfectant Health Center, Environmental Health Research Department, National Institute of Environmental Research, Incheon 22689, Republic of Korea
| | - Hong Lee
- Medical Science Research Center, Ansan Hospital, Korea University College of Medicine, Ansan-si 15355, Gyeonggi, Republic of Korea
| | - Ju Han Lee
- Department of Pathology, Ansan Hospital, Korea University College of Medicine, Ansan-si 15355, Gyeonggi, Republic of Korea
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8
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Kumar K, Datta K, Fornace AJ, Suman S. Total body proton and heavy-ion irradiation causes cellular senescence and promotes pro-osteoclastogenic activity in mouse bone marrow. Heliyon 2022; 8:e08691. [PMID: 35028468 PMCID: PMC8741516 DOI: 10.1016/j.heliyon.2021.e08691] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/01/2021] [Accepted: 12/27/2021] [Indexed: 12/12/2022] Open
Abstract
Low-LET photon radiation-induced persistent alterations in bone marrow (BM) cells are well documented in total-body irradiated (TBI) rodents and also among radiotherapy patients. However, the late effects of protons and high-LET heavy-ion radiation on BM cells and its implications in osteoclastogenesis are not fully understood. Therefore, C57BL6/J female mice (8 weeks; n = 10/group) were irradiated to sham, and 1 Gy of the proton (0.22 keV/μm), or high-LET 56Fe-ions (148 keV/μm) and at 60 d post-exposure, mice were sacrificed and femur sections were obtained for histological, cellular and molecular analysis. Cell proliferation (PCNA), cell death (active caspase-3), senescence (p16), osteoclast (RANK), osteoblast (OPG), osteoblast progenitor (c-Kit), and osteoclastogenesis-associated secretory factors (like RANKL) were assessed using immunostaining. While no change in cell proliferation and apoptosis between control and irradiated groups was noted, the number of BM megakaryocytes was significantly reduced in irradiated mice at 60 d post-exposure. A remarkable increase in p16 positive cells indicated a persistent increase in cell senescence, whereas increased RANKL/OPG ratio, reductions in the number of osteoblast progenitor cells, and osteocalcin provided clear evidence that exposure to both proton and 56Fe-ions promotes pro-osteoclastogenic activity in BM. Among irradiated groups, 56Fe-induced alterations in the BM cellularity and osteoclastogenesis were significantly greater than the protons that demonstrated a radiation quality-dependent effect. This study has implications in understanding the role of IR-induced late changes in the BM cells and its involvement in bone degeneration among deep-space astronauts, and also in patients undergoing proton or heavy-ion radiotherapy.
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Affiliation(s)
- Kamendra Kumar
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Kamal Datta
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Albert J. Fornace
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Shubhankar Suman
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
- Corresponding author.
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A dry immersion model of microgravity modulates platelet phenotype, miRNA signature, and circulating plasma protein biomarker profile. Sci Rep 2021; 11:21906. [PMID: 34753989 PMCID: PMC8578674 DOI: 10.1038/s41598-021-01335-x] [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: 06/10/2021] [Accepted: 10/26/2021] [Indexed: 11/08/2022] Open
Abstract
Ground based research modalities of microgravity have been proposed as innovative methods to investigate the aetiology of chronic age-related conditions such as cardiovascular disease. Dry Immersion (DI), has been effectively used to interrogate the sequelae of physical inactivity (PI) and microgravity on multiple physiological systems. Herein we look at the causa et effectus of 3-day DI on platelet phenotype, and correlate with both miRomic and circulating biomarker expression. The miRomic profile of platelets is reflective of phenotype, which itself is sensitive and malleable to the exposome, undergoing responsive transitions in order to fulfil platelets role in thrombosis and haemostasis. Heterogeneous platelet subpopulations circulate at any given time, with varying degrees of sensitivity to activation. Employing a DI model, we investigate the effect of acute PI on platelet function in 12 healthy males. 3-day DI resulted in a significant increase in platelet count, plateletcrit, platelet adhesion, aggregation, and a modest elevation of platelet reactivity index (PRI). We identified 15 protein biomarkers and 22 miRNA whose expression levels were altered after DI. A 3-day DI model of microgravity/physical inactivity induced a prothrombotic platelet phenotype with an unique platelet miRNA signature, increased platelet count and plateletcrit. This correlated with a unique circulating protein biomarker signature. Taken together, these findings highlight platelets as sensitive adaptive sentinels and functional biomarkers of epigenetic drift within the cardiovascular compartment.
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10
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Generation and manipulation of human iPSC-derived platelets. Cell Mol Life Sci 2021; 78:3385-3401. [PMID: 33439272 PMCID: PMC7804213 DOI: 10.1007/s00018-020-03749-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 12/01/2020] [Accepted: 12/23/2020] [Indexed: 12/17/2022]
Abstract
The discovery of iPSCs has led to the ex vivo production of differentiated cells for regenerative medicine. In the case of transfusion products, the derivation of platelets from iPSCs is expected to complement our current blood-donor supplied transfusion system through donor-independent production with complete pathogen-free assurance. This derivation can also overcome alloimmune platelet transfusion refractoriness by resulting in autologous, HLA-homologous or HLA-deficient products. Several developments were necessary to produce a massive number of platelets required for a single transfusion. First, expandable megakaryocytes were established from iPSCs through transgene expression. Second, a turbulent-type bioreactor with improved platelet yield and quality was developed. Third, novel drugs that enabled efficient feeder cell-free conditions were developed. Fourth, the platelet-containing suspension was purified and resuspended in an appropriate buffer. Finally, the platelet product needed to be assured for competency and safety including non-tumorigenicity through in vitro and in vivo preclinical tests. Based on these advancements, a clinical trial has started. The generation of human iPSC-derived platelets could evolve transfusion medicine to the next stage and assure a ubiquitous, safe supply of platelet products. Further, considering the feasibility of gene manipulations in iPSCs, other platelet products may bring forth novel therapeutic measures.
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11
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Dai Y, Cheng Z, Fricke DR, Zhao H, Huang W, Zhong Q, Zhu P, Zhang W, Wu Z, Lin Q, Zhu H, Liu Y, Qian T, Fu L, Cui L, Zeng T. Prognostic role of Wnt and Fzd gene families in acute myeloid leukaemia. J Cell Mol Med 2021; 25:1456-1467. [PMID: 33417298 PMCID: PMC7875934 DOI: 10.1111/jcmm.16233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 12/09/2020] [Accepted: 12/11/2020] [Indexed: 01/18/2023] Open
Abstract
Wnt-Fzd signalling pathway plays a critical role in acute myeloid leukaemia (AML) progression and oncogenicity. There is no study to investigate the prognostic value of Wnt and Fzd gene families in AML. Our study screened 84 AML patients receiving chemotherapy only and 71 also undergoing allogeneic haematopoietic stem cell transplantation (allo-HSCT) from the Cancer Genome Atlas (TCGA) database. We found that some Wnt and Fzd genes had significant positive correlations. The expression levels of Fzd gene family were independent of survival in AML patients. In the chemotherapy group, AML patients with high Wnt2B or Wnt11 expression had significantly shorter event-free survival (EFS) and overall survival (OS); high Wnt10A expressers had significantly longer OS than the low expressers (all P < .05), whereas, in the allo-HSCT group, the expression levels of Wnt gene family were independent of survival. We further found that high expression of Wnt10A and Wnt11 had independent prognostic value, and the patients with high Wnt10A and low Wnt11 expression had the longest EFS and OS in the chemotherapy group. Pathway enrichment analysis showed that genes related to Wnt10A, Wnt11 and Wnt 2B were mainly enriched in 'cell morphogenesis involved in differentiation', 'haematopoietic cell lineage', 'platelet activation, signalling and aggregation' and 'mitochondrial RNA metabolic process' signalling pathways. Our results indicate that high Wnt2B and Wnt11 expression predict poor prognosis, and high Wnt10A expression predicts favourable prognosis in AML, but their prognostic effects could be neutralized by allo-HSCT. Combined Wnt10A and Wnt11 may be a novel prognostic marker in AML.
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Affiliation(s)
- Yifeng Dai
- Department of Hematology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.,Translational Medicine Center, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zhiheng Cheng
- Department of Hematology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.,Translational Medicine Center, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Doerte R Fricke
- Department of Genetics, LSU Health Sciences Center, New Orleans, LA, USA
| | - Hongyou Zhao
- Institute of Engineering Medicine, Beijing Institute of Technology, Beijing, China
| | - Wenhui Huang
- Department of Hematology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Translational Medicine Center, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Qingfu Zhong
- Department of Hematology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Translational Medicine Center, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Pei Zhu
- Department of Hematology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Translational Medicine Center, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Wenjuan Zhang
- Department of Hematology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Translational Medicine Center, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zhihua Wu
- Department of Hematology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Translational Medicine Center, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Qing Lin
- Department of Hematology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Translational Medicine Center, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Huoyan Zhu
- Department of Hematology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Translational Medicine Center, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yan Liu
- Translational Medicine Center, Huaihe Hospital of Henan University, Kaifeng, China
| | - Tingting Qian
- Department of Hematology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Translational Medicine Center, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Lin Fu
- Department of Hematology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.,Department of Hematology, Huaihe Hospital of Henan University, Kaifeng, China.,Guangdong Provincial Education Department Key Laboratory of Nano-Immunoregulation Tumor Microenvironment, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Longzhen Cui
- Translational Medicine Center, Huaihe Hospital of Henan University, Kaifeng, China
| | - Tiansheng Zeng
- Department of Hematology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Translational Medicine Center, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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12
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Kalev-Zylinska ML, Morel-Kopp MC, Ward CM, Hearn JI, Hamilton JR, Bogdanova AY. Ionotropic glutamate receptors in platelets: opposing effects and a unifying hypothesis. Platelets 2020; 32:998-1008. [PMID: 33284715 DOI: 10.1080/09537104.2020.1852542] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Ionotropic glutamate receptors include α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptors (AMPAR), kainate receptors (KAR), and N-methyl-D-aspartate receptors (NMDAR). All function as cation channels; AMPAR and KAR are more permeable to sodium and NMDAR to calcium ions. Compared to the brain, receptor assemblies in platelets are unusual, suggesting distinctive functionalities.There is convincing evidence that AMPAR and KAR amplify platelet function and thrombus formation in vitro and in vivo. Transgenic mice lacking GluA1 and GluK2 (AMPAR and KAR subunits, respectively) have longer bleeding times and prolonged time to thrombosis in an arterial model. In humans, rs465566 KAR gene polymorphism associates with altered in vitro platelet responses suggesting enhanced aspirin effect. The NMDAR contribution to platelet function is less well defined. NMDA at low concentrations (≤10 μM) inhibits platelet aggregation and high concentrations (≥100 μM) have no effect. However, open NMDAR channel blockers interfere with platelet activation and aggregation induced by other agonists in vitro; anti-GluN1 antibodies interfere with thrombus formation under high shear rates ex vivo; and rats vaccinated with GluN1 develop iron deficiency anemia suggestive of mild chronic bleeding. In this review, we summarize data on glutamate receptors in platelets and propose a unifying model that reconciles some of the opposing effects observed.
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Affiliation(s)
- Maggie L Kalev-Zylinska
- Blood and Cancer Biology Laboratory, Department of Molecular Medicine & Pathology, University of Auckland, Auckland, New Zealand.,Department of Pathology and Laboratory Medicine, LabPlus Haematology, Auckland City Hospital, Auckland, New Zealand
| | - Marie-Christine Morel-Kopp
- Department of Haematology and Transfusion Medicine, Royal North Shore Hospital, Sydney, Australia.,Northern Blood Research Centre, Kolling Institute, University of Sydney, Sydney, Australia
| | - Christopher M Ward
- Department of Haematology and Transfusion Medicine, Royal North Shore Hospital, Sydney, Australia.,Northern Blood Research Centre, Kolling Institute, University of Sydney, Sydney, Australia
| | - James I Hearn
- Blood and Cancer Biology Laboratory, Department of Molecular Medicine & Pathology, University of Auckland, Auckland, New Zealand
| | - Justin R Hamilton
- Australian Centre for Blood Diseases, Monash University, Melbourne, Australia
| | - Anna Y Bogdanova
- Red Blood Cell Research Group, Institute of Veterinary Physiology, Vetsuisse Faculty, University of Zurich, Zürich, Switzerland.,Zurich Center for Integrative Human Physiology, University of Zurich, Zürich, Switzerland
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13
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Cheng W, Ramachandran S, Crawford L. Estimation of non-null SNP effect size distributions enables the detection of enriched genes underlying complex traits. PLoS Genet 2020; 16:e1008855. [PMID: 32542026 PMCID: PMC7316356 DOI: 10.1371/journal.pgen.1008855] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 06/25/2020] [Accepted: 05/13/2020] [Indexed: 12/22/2022] Open
Abstract
Traditional univariate genome-wide association studies generate false positives and negatives due to difficulties distinguishing associated variants from variants with spurious nonzero effects that do not directly influence the trait. Recent efforts have been directed at identifying genes or signaling pathways enriched for mutations in quantitative traits or case-control studies, but these can be computationally costly and hampered by strict model assumptions. Here, we present gene-ε, a new approach for identifying statistical associations between sets of variants and quantitative traits. Our key insight is that enrichment studies on the gene-level are improved when we reformulate the genome-wide SNP-level null hypothesis to identify spurious small-to-intermediate SNP effects and classify them as non-causal. gene-ε efficiently identifies enriched genes under a variety of simulated genetic architectures, achieving greater than a 90% true positive rate at 1% false positive rate for polygenic traits. Lastly, we apply gene-ε to summary statistics derived from six quantitative traits using European-ancestry individuals in the UK Biobank, and identify enriched genes that are in biologically relevant pathways.
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Affiliation(s)
- Wei Cheng
- Department of Ecology and Evolutionary Biology, Brown University, Providence, Rhode Island, United States of America
- Center for Computational Molecular Biology, Brown University, Providence, Rhode Island, United States of America
| | - Sohini Ramachandran
- Department of Ecology and Evolutionary Biology, Brown University, Providence, Rhode Island, United States of America
- Center for Computational Molecular Biology, Brown University, Providence, Rhode Island, United States of America
- * E-mail: (SR); (LC)
| | - Lorin Crawford
- Center for Computational Molecular Biology, Brown University, Providence, Rhode Island, United States of America
- Department of Biostatistics, Brown University, Providence, Rhode Island, United States of America
- Center for Statistical Sciences, Brown University, Providence, Rhode Island, United States of America
- * E-mail: (SR); (LC)
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14
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Tang Y, Hu M, Xu Y, Chen F, Chen S, Chen M, Qi Y, Shen M, Wang C, Lu Y, Zhang Z, Zeng H, Quan Y, Wang F, Su Y, Zeng D, Wang S, Wang J. Megakaryocytes promote bone formation through coupling osteogenesis with angiogenesis by secreting TGF-β1. Am J Cancer Res 2020; 10:2229-2242. [PMID: 32104505 PMCID: PMC7019172 DOI: 10.7150/thno.40559] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 12/06/2019] [Indexed: 12/21/2022] Open
Abstract
Rationale: The hematopoietic system and skeletal system have a close relationship, and megakaryocytes (MKs) may be involved in maintaining bone homeostasis. However, the exact role and underlying mechanism of MKs in bone formation during steady-state and stress conditions are still unclear. Methods: We first evaluated the bone phenotype with MKs deficiency in bone marrow by using c-Mpl-deficient mice and MKs-conditionally deleted mice. Then, osteoblasts (OBs) proliferation and differentiation and CD31hiEmcnhi tube formation were assessed. The expression of growth factors related to bone formation in MKs was detected by RNA-sequencing and enzyme-linked immunosorbent assays (ELISAs). Mice with specific depletion of TGF-β1 in MKs were used to further verify the effect of MKs on osteogenesis and angiogenesis. Finally, MKs treatment of irradiation-induced bone injury was tested in a mouse model. Results: We found that MKs deficiency significantly impaired bone formation. Further investigations revealed that MKs could promote OBs proliferation and differentiation, as well as CD31hiEmcnhi vessels formation, by secreting high levels of TGF-β1. Consistent with these findings, mice with specific depletion of TGF-β1 in MKs displayed significantly decreased bone mass and strength. Importantly, treatment with MKs or thrombopoietin (TPO) substantially attenuated radioactive bone injury in mice by directly or indirectly increasing the level of TGF-β1 in bone marrow. MKs-derived TGF-β1 was also involved in suppressing apoptosis and promoting DNA damage repair in OBs after irradiation exposure. Conclusions: Our findings demonstrate that MKs contribute to bone formation through coupling osteogenesis with angiogenesis by secreting TGF-β1, which may offer a potential therapeutic strategy for the treatment of irradiation-induced osteoporosis.
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15
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de Rezende MM, Ng-Blichfeldt JP, Justo GZ, Paredes-Gamero EJ, Gosens R. Divergent effects of Wnt5b on IL-3- and GM-CSF-induced myeloid differentiation. Cell Signal 2019; 67:109507. [PMID: 31857239 PMCID: PMC7116107 DOI: 10.1016/j.cellsig.2019.109507] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 12/12/2019] [Accepted: 12/16/2019] [Indexed: 11/17/2022]
Abstract
The multiple specialized cell types of the hematopoietic system originate from differentiation of hematopoietic stem cells and progenitors (HSPC), which can generate both lymphoid and myeloid lineages. The myeloid lineage is preferentially maintained during ageing, but the mechanisms that contribute to this process are incompletely understood. Here, we studied the roles of Wnt5a and Wnt5b, ligands that have previously been linked to hematopoietic stem cell ageing and that are abundantly expressed by both hematopoietic progenitors and bone-marrow derived niche cells. Whereas Wnt5a had no major effects on primitive cell differentiation, Wnt5b had profound and divergent effects on cytokine-induced myeloid differentiation. Remarkably, while IL-3- mediated myeloid differentiation was largely repressed by Wnt5b, GM-CSF-induced myeloid differentiation was augmented. Furthermore, in the presence of IL-3, Wnt5b enhanced HSPC self-renewal, whereas in the presence ofGM-CSF, Wnt5b accelerated differentiation, leading to progenitor cell exhaustion. Our results highlight discrepancies between IL-3 and GM-CSF, and reveal novel effects of Wnt5b on the hematopoietic system.
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Affiliation(s)
- Marina Mastelaro de Rezende
- Departamento de Bioquímica, Universidade Federal de São Paulo (UNIFESP), São Paulo 04044-020, Brazil; Department of Molecular Pharmacology, University of Groningen, Groningen 9713AV, Netherlands
| | - John-Poul Ng-Blichfeldt
- Department of Molecular Pharmacology, University of Groningen, Groningen 9713AV, Netherlands; MRC Laboratory of Molecular Biology, Cambridge Biomedical Campus, Cambridge CB2 0QH, UK
| | - Giselle Zenker Justo
- Departamento de Bioquímica, Universidade Federal de São Paulo (UNIFESP), São Paulo 04044-020, Brazil; Departamento de Ciências Farmacêuticas, Universidade Federal de São Paulo (UNIFESP), Diadema 09913-030, Brazil
| | - Edgar Julian Paredes-Gamero
- Departamento de Bioquímica, Universidade Federal de São Paulo (UNIFESP), São Paulo 04044-020, Brazil; Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Universidade Federal de Mato Grosso do Sul, 79070-900, Campo Grande, Mato Grosso do Sul, Brazil
| | - Reinoud Gosens
- Department of Molecular Pharmacology, University of Groningen, Groningen 9713AV, Netherlands.
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16
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Vermeersch E, Nuyttens BP, Tersteeg C, Broos K, De Meyer SF, Vanhoorelbeke K, Deckmyn H. Functional Genomics for the Identification of Modulators of Platelet-Dependent Thrombus Formation. TH OPEN 2019; 2:e272-e279. [PMID: 31249951 PMCID: PMC6524883 DOI: 10.1055/s-0038-1670630] [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: 04/11/2018] [Accepted: 08/06/2018] [Indexed: 11/17/2022] Open
Abstract
Despite the absence of the genome in platelets, transcription profiling provides important insights into platelet function and can help clarify abnormalities in platelet disorders. The Bloodomics Consortium performed whole-genome expression analysis comparing in vitro–differentiated megakaryocytes (MKs) with in vitro–differentiated erythroblasts and different blood cell types. This allowed the identification of genes with upregulated expression in MKs compared with all other cell lineages, among the receptors BAMBI, LRRC32, ESAM, and DCBLD2. In a later correlative analysis of genome-wide platelet RNA expression with interindividual human platelet reactivity, LLRFIP and COMMD7 were additionally identified. A functional genomics approach using morpholino-based silencing in zebrafish identified various roles for all of these selected genes in thrombus formation. In this review, we summarize the role of the six identified genes in zebrafish and discuss how they correlate with subsequently performed mouse experiments.
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Affiliation(s)
- Elien Vermeersch
- Laboratory for Thrombosis Research, KU Leuven Campus Kulak, Kortrijk, Belgium
| | | | - Claudia Tersteeg
- Laboratory for Thrombosis Research, KU Leuven Campus Kulak, Kortrijk, Belgium
| | - Katleen Broos
- Laboratory for Thrombosis Research, KU Leuven Campus Kulak, Kortrijk, Belgium
| | - Simon F De Meyer
- Laboratory for Thrombosis Research, KU Leuven Campus Kulak, Kortrijk, Belgium
| | - Karen Vanhoorelbeke
- Laboratory for Thrombosis Research, KU Leuven Campus Kulak, Kortrijk, Belgium
| | - Hans Deckmyn
- Laboratory for Thrombosis Research, KU Leuven Campus Kulak, Kortrijk, Belgium
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17
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Fetisov TI, Lesovaya EA, Yakubovskaya MG, Kirsanov KI, Belitsky GA. Alterations in WNT Signaling in Leukemias. BIOCHEMISTRY (MOSCOW) 2019; 83:1448-1458. [PMID: 30878020 DOI: 10.1134/s0006297918120039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The WNT/β-catenin signaling pathway plays an important role in the differentiation and proliferation of hematopoietic cells. In recent years, special attention has been paid to the role of impairments in the WNT signaling pathway in pathogenesis of malignant neoplasms of the hematopoietic system. Disorders in the WNT/β-catenin signaling in leukemias identified to date include hypersensitivity to the WNT ligands, epigenetic repression of WNT antagonists, overexpression of WNT ligands, impaired β-catenin degradation in the cytoplasm, and changes in the activity of the TCF/Lef transcription factors. At the molecular level, these impairments involve overexpression of the FZD protein, hypermethylation of the SFRP, DKK, WiF, Sox, and CXXC gene promoters, overexpression of Lef1 and plakoglobin, mutations in GSK3β, and β-catenin phosphorylation by the BCR-ABL kinase. This review is devoted to the systematization of these data.
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Affiliation(s)
- T I Fetisov
- Blokhin National Medical Research Center of Oncology, Moscow, 115478, Russia
| | - E A Lesovaya
- Blokhin National Medical Research Center of Oncology, Moscow, 115478, Russia.,Pavlov Ryazan State Medical University, Ryazan, 390026, Russia
| | - M G Yakubovskaya
- Blokhin National Medical Research Center of Oncology, Moscow, 115478, Russia
| | - K I Kirsanov
- Blokhin National Medical Research Center of Oncology, Moscow, 115478, Russia.,Peoples' Friendship University of Russia, Moscow, 117198, Russia
| | - G A Belitsky
- Blokhin National Medical Research Center of Oncology, Moscow, 115478, Russia.
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18
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Gfi1b regulates the level of Wnt/β-catenin signaling in hematopoietic stem cells and megakaryocytes. Nat Commun 2019; 10:1270. [PMID: 30894540 PMCID: PMC6426870 DOI: 10.1038/s41467-019-09273-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 02/25/2019] [Indexed: 01/06/2023] Open
Abstract
Gfi1b is a transcriptional repressor expressed in hematopoietic stem cells (HSCs) and megakaryocytes (MKs). Gfi1b deficiency leads to expansion of both cell types and abrogates the ability of MKs to respond to integrin. Here we show that Gfi1b forms complexes with β-catenin, its co-factors Pontin52, CHD8, TLE3 and CtBP1 and regulates Wnt/β-catenin-dependent gene expression. In reporter assays, Gfi1b can activate TCF-dependent transcription and Wnt3a treatment enhances this activation. This requires interaction between Gfi1b and LSD1 and suggests that a tripartite β-catenin/Gfi1b/LSD1 complex exists, which regulates Wnt/β-catenin target genes. Consistently, numerous canonical Wnt/β-catenin target genes, co-occupied by Gfi1b, β-catenin and LSD1, have their expression deregulated in Gfi1b-deficient cells. When Gfi1b-deficient cells are treated with Wnt3a, their normal cellularity is restored and Gfi1b-deficient MKs regained their ability to spread on integrin substrates. This indicates that Gfi1b controls both the cellularity and functional integrity of HSCs and MKs by regulating Wnt/β-catenin signaling pathway. Gfi1b regulates cellularity of haematopoietic stem cells (HSCs) and megakaryocytes (MKs) as well as spreading of MKs on matrix. Here the authors show that Gfi1b regulates this behaviour by recruiting LSD1 and β-catenin to Wnt/β-catenin signalling targets.
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19
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20
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Microtubule plus-end tracking Adenopolyposis Coli negatively regulates proplatelet formation. Sci Rep 2018; 8:15808. [PMID: 30361531 PMCID: PMC6202313 DOI: 10.1038/s41598-018-34118-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 10/03/2018] [Indexed: 12/17/2022] Open
Abstract
Platelets are produced upon profound reorganization of mature megakaryocytes (MK) leading to proplatelet elongation and release into the blood stream, a process termed thrombopoiesis. This highly dynamic process requires microtubules (MT) reorganization by mechanisms that are still incompletely understood. Adenomatous polyposis coli (APC) is a microtubule plus-end tracking protein involved in the regulation of MT in a number of cell systems and its inactivation has been reported to alter hematopoiesis. The aim of our study was to investigate the role of APC in megakaryopoiesis and the final steps of platelet formation. Down-regulation of APC in cultured human MK by RNA interference increased endomitosis and the proportion of cells able to extend proplatelets (68.8% (shAPC1) and 52.5% (shAPC2) vs 28.1% in the control). Similarly an increased ploidy and amplification of the proplatelet network were observed in MK differentiated from Lin- cells of mice with APC-deficiency in the MK lineage. In accordance, these mice exhibited increased platelet counts when compared to wild type mice (1,323 ± 111 vs 919 ± 52 platelets/µL; n = 12 p 0.0033**). Their platelets had a normal size, ultrastructure and number of microtubules coils and their main functions were also preserved. Loss of APC resulted in lower levels of acetylated tubulin and decreased activation of the Wnt signaling pathway. Thus, APC appears as an important regulator of proplatelet formation and overall thrombopoiesis.
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21
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Yorgan T, David JP, Amling M, Schinke T. The high bone mass phenotype of Lrp5-mutant mice is not affected by megakaryocyte depletion. Biochem Biophys Res Commun 2018; 497:659-666. [PMID: 29454962 DOI: 10.1016/j.bbrc.2018.02.127] [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: 02/12/2018] [Accepted: 02/14/2018] [Indexed: 11/18/2022]
Abstract
Bone remodeling is a continuously ongoing process mediated by bone-resorbing osteoclasts and bone-forming osteoblasts. One key regulator of bone formation is the putative Wnt co-receptor Lrp5, where activating mutations in the extracellular domain cause increased bone formation in mice and humans. We have previously reported that megakaryocyte numbers are increased the bone marrow of mice carrying a high bone mass mutation (HBM) of Lrp5 (Lrp5G170V). Since megakaryocytes can promote bone formation, we addressed the question, if the bone remodeling phenotype of Lrp5G170V mice is affected by megakaryocyte depletion. For that purpose we took advantage of a mouse model carrying a mutation of the Mpl gene, encoding the thrombopoietin receptor. These mice (Mplhlb219) were crossed with Lrp5G170V mice to generate animals carrying both mutations in a homozygous state. Using μCT, undecalcified histology and bone-specific histomorphometry of 12 weeks old littermates we observed that megakaryocyte number was remarkably decreased in Mplhlb219/Lrp5G170V mice, yet the high bone mass phenotype of Lrp5G170V mice was not significantly affected by the homozygous Mpl mutation. Finally, when we analyzed 24 weeks old wildtype and Mplhlb219 mice we did not observe a statistically significant alteration of bone remodeling in the latter ones. Taken together, our results demonstrate that an increased number of bone marrow megakaryocytes does not contribute to the increased bone formation caused by Lrp5 activation.
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Affiliation(s)
- Timur Yorgan
- Department of Osteology and Biomechanics, University Medical Center Hamburg Eppendorf, Hamburg 20246, Germany
| | - Jean-Pierre David
- Department of Osteology and Biomechanics, University Medical Center Hamburg Eppendorf, Hamburg 20246, Germany
| | - Michael Amling
- Department of Osteology and Biomechanics, University Medical Center Hamburg Eppendorf, Hamburg 20246, Germany
| | - Thorsten Schinke
- Department of Osteology and Biomechanics, University Medical Center Hamburg Eppendorf, Hamburg 20246, Germany.
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22
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Megakaryocyte ontogeny: Clinical and molecular significance. Exp Hematol 2018; 61:1-9. [PMID: 29501467 DOI: 10.1016/j.exphem.2018.02.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 02/11/2018] [Accepted: 02/13/2018] [Indexed: 12/23/2022]
Abstract
Fetal megakaryocytes (Mks) differ from adult Mks in key parameters that affect their capacity for platelet production. However, despite being smaller, more proliferative, and less polyploid, fetal Mks generally mature in the same manner as adult Mks. The phenotypic features unique to fetal Mks predispose patients to several disease conditions, including infantile thrombocytopenia, infantile megakaryoblastic leukemias, and poor platelet recovery after umbilical cord blood stem cell transplantations. Ontogenic Mk differences also affect new strategies being developed to address global shortages of platelet transfusion units. These donor-independent, ex vivo production platforms are hampered by the limited proliferative capacity of adult-type Mks and the inferior platelet production by fetal-type Mks. Understanding the molecular programs that distinguish fetal versus adult megakaryopoiesis will help in improving approaches to these clinical problems. This review summarizes the phenotypic differences between fetal and adult Mks, the disease states associated with fetal megakaryopoiesis, and recent advances in the understanding of mechanisms that determine ontogenic Mk transitions.
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23
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Salzmann M, Hoesel B, Haase M, Mussbacher M, Schrottmaier WC, Kral-Pointner JB, Finsterbusch M, Mazharian A, Assinger A, Schmid JA. A novel method for automated assessment of megakaryocyte differentiation and proplatelet formation. Platelets 2018; 29:357-364. [PMID: 29461915 DOI: 10.1080/09537104.2018.1430359] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Transfusion of platelet concentrates represents an important treatment for various bleeding complications. However, the short half-life and frequent contaminations with bacteria restrict the availability of platelet concentrates and raise a clear demand for platelets generated ex vivo. Therefore, in vitro platelet generation from megakaryocytes represents an important research topic. A vital step for this process represents accurate analysis of thrombopoiesis and proplatelet formation, which is usually conducted manually. We aimed to develop a novel method for automated classification and analysis of proplatelet-forming megakaryocytes in vitro. After fluorescent labelling of surface and nucleus, MKs were automatically categorized and analysed with a novel pipeline of the open source software CellProfiler. Our new workflow is able to detect and quantify four subtypes of megakaryocytes undergoing thrombopoiesis: proplatelet-forming, spreading, pseudopodia-forming and terminally differentiated, anucleated megakaryocytes. Furthermore, we were able to characterize the inhibitory effect of dasatinib on thrombopoiesis in more detail. Our new workflow enabled rapid, unbiased, quantitative and qualitative in-depth analysis of proplatelet formation based on morphological characteristics. Clinicians and basic researchers alike will benefit from this novel technique that allows reliable and unbiased quantification of proplatelet formation. It thereby provides a valuable tool for the development of methods to generate platelets ex vivo and to detect effects of drugs on megakaryocyte differentiation.
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Affiliation(s)
- M Salzmann
- a Institute of Vascular Biology and Thrombosis Research , Medical University of Vienna , Vienna , Austria
| | - B Hoesel
- a Institute of Vascular Biology and Thrombosis Research , Medical University of Vienna , Vienna , Austria
| | - M Haase
- a Institute of Vascular Biology and Thrombosis Research , Medical University of Vienna , Vienna , Austria
| | - M Mussbacher
- a Institute of Vascular Biology and Thrombosis Research , Medical University of Vienna , Vienna , Austria
| | - W C Schrottmaier
- a Institute of Vascular Biology and Thrombosis Research , Medical University of Vienna , Vienna , Austria
| | - J B Kral-Pointner
- a Institute of Vascular Biology and Thrombosis Research , Medical University of Vienna , Vienna , Austria
| | - M Finsterbusch
- a Institute of Vascular Biology and Thrombosis Research , Medical University of Vienna , Vienna , Austria
| | - A Mazharian
- b Institute of Cardiovascular Sciences, College of Medical and Dental Sciences , University of Birmingham , Birmingham , UK
| | - A Assinger
- a Institute of Vascular Biology and Thrombosis Research , Medical University of Vienna , Vienna , Austria
| | - J A Schmid
- a Institute of Vascular Biology and Thrombosis Research , Medical University of Vienna , Vienna , Austria
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24
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Radhakrishnan U, Alsrhani A, Sundaramoorthi H, Khandekar G, Kashyap M, Fuchs JL, Perkins BD, Omori Y, Jagadeeswaran P. Intraflagellar transport proteins are involved in thrombocyte filopodia formation and secretion. Platelets 2017; 29:811-820. [PMID: 29125377 DOI: 10.1080/09537104.2017.1361524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Intraflagellar transport (IFT) proteins are vital for the genesis and maintenance of cilia. Our identification of ift122 transcripts in zebrafish thrombocytes that lack primary cilia was unexpected. IFT proteins serve transport in cilia, whose narrow dimensions may have necessitated the evolution of IFT from vesicular transport in ancestral eukaryotes. We hypothesized that IFTs might also facilitate transport within the filopodia that form when thrombocytes are activated. To test this possibility, we knocked down ift122 expression by injecting antisense Morpholino oligonucleotides (MOs) into zebrafish embryos. Laser-induced arterial thrombosis showed prolonged time to occlusion (TTO) of the vessel, as would be expected with defective thrombocyte function. Acute effects in adult zebrafish were evaluated by Vivo-Morpholino (Vivo-MO) knockdown of ift122. Vivo-MO morphants showed a prolonged time to thrombocyte aggregation (TTA) in the plate tilt assay after thrombocyte activation by the following agonists: ADP, collagen, PAR1 peptide, and epinephrine. A luminescence assay for ATP revealed that ATP secretion by thrombocytes was reduced in collagen-activated blood of Vivo-MO ift122 morphants. Moreover, DiI-C18 labeled morphant thrombocytes exposed to collagen showed reductions in filopodia number and length. Analysis of ift mutants, in which cilia defects have been noted, also showed prolongation of TTO in our arterial laser thrombosis assay. Additionally, collagen activation of wild-type thrombocytes led to a concentration of IFT122 both within and at the base of filopodia. Taken together these results, suggest that IFT proteins are involved in both the extension of filopodia and secretion of ATP, which are critical in thrombocyte function.
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Affiliation(s)
- Uvaraj Radhakrishnan
- a Department of Biological Sciences , University of North Texas , Denton , TX, USA
| | - Abdullah Alsrhani
- a Department of Biological Sciences , University of North Texas , Denton , TX, USA
| | | | - Gauri Khandekar
- a Department of Biological Sciences , University of North Texas , Denton , TX, USA
| | - Meghana Kashyap
- a Department of Biological Sciences , University of North Texas , Denton , TX, USA
| | - Jannon L Fuchs
- a Department of Biological Sciences , University of North Texas , Denton , TX, USA
| | - Brian D Perkins
- b Department of Ophthalmic Research , Cole Eye Institute, Cleveland Clinic , Cleveland , OH, USA
| | - Yoshihiro Omori
- c Laboratory for Molecular and Developmental Biology, Institute for Protein Research, Osaka University , Osaka , Japan
| | - Pudur Jagadeeswaran
- a Department of Biological Sciences , University of North Texas , Denton , TX, USA
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25
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Abstract
Ex vivo production of human platelets has been pursued as an alternative measure to resolve limitations in the supply and safety of current platelet transfusion products. To this end, induced pluripotent stem cells (iPSCs) are considered an ideal global source, as they are not only pluripotent and self-renewing, but are also available from basically any person, have relatively few ethical issues, and are easy to manipulate. From human iPSCs, megakaryocyte (MK) lines with robust proliferation capacity have been established by the introduction of specified sets of genes. These expandable MKs are also cryopreservable and thus would be suitable as master cells for good manufacturing practice (GMP)-grade production of platelets, assuring availability on demand and safety against blood-borne infections. Meanwhile, developments in bioreactors that physically mimic the in vivo environment and discovery of substances that promote thrombopoiesis have yielded competent platelets with improved efficiency. The derivation of platelets from iPSCs could further resolve transfusion-related alloimmune complications through the manufacturing of autologous products and human leukocyte antigen (HLA)-compatible platelets from stocked homologous HLA-type iPSC libraries or by manipulation of HLAs and human platelet antigens (HPAs). Considering these key advances in the field, HLA-deleted platelets could become a universal product that is manufactured at industrial level to safely fulfill almost all demands. In this review, we provide an overview of the ex vivo production of iPSC-derived platelets toward clinical applications, a production that would revolutionize the blood transfusion system and lead the field of iPSC-based regenerative medicine.
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Affiliation(s)
- N Sugimoto
- Department of Clinical Application, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - K Eto
- Department of Clinical Application, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
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26
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Bianchi E, Ruberti S, Rontauroli S, Guglielmelli P, Salati S, Rossi C, Zini R, Tagliafico E, Vannucchi AM, Manfredini R. Role of miR-34a-5p in Hematopoietic Progenitor Cells Proliferation and Fate Decision: Novel Insights into the Pathogenesis of Primary Myelofibrosis. Int J Mol Sci 2017; 18:ijms18010145. [PMID: 28098757 PMCID: PMC5297778 DOI: 10.3390/ijms18010145] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 01/05/2017] [Accepted: 01/06/2017] [Indexed: 12/24/2022] Open
Abstract
Primary Myelofibrosis (PMF) is a chronic Philadelphia-negative myeloproliferative neoplasm characterized by a skewed megakaryopoiesis and an overproduction of proinflammatory and profibrotic mediators that lead to the development of bone marrow (BM) fibrosis. Since we recently uncovered the upregulation of miR-34a-5p in PMF CD34+ hematopoietic progenitor cells (HPCs), in order to elucidate its role in PMF pathogenesis here we unravelled the effects of miR-34a-5p overexpression in HPCs. We showed that enforced expression of miR-34a-5p partially constrains proliferation and favours the megakaryocyte and monocyte/macrophage commitment of HPCs. Interestingly, we identified lymphoid enhancer-binding factor 1 (LEF1) and nuclear receptor subfamily 4, group A, member 2 (NR4A2) transcripts as miR-34a-5p-targets downregulated after miR-34a-5p overexpression in HPCs as well as in PMF CD34+ cells. Remarkably, the knockdown of NR4A2 in HPCs mimicked the antiproliferative effects of miR-34a-5p overexpression, while the silencing of LEF1 phenocopied the effects of miR-34a-5p overexpression on HPCs lineage choice, by favouring the megakaryocyte and monocyte/macrophage commitment. Collectively our data unravel the role of miR-34a-5p in HPCs fate decision and suggest that the increased expression of miR-34a-5p in PMF HPCs could be important for the skewing of megakaryopoiesis and the production of monocytes, that are key players in BM fibrosis in PMF patients.
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Affiliation(s)
- Elisa Bianchi
- Centre for Regenerative Medicine "Stefano Ferrari", Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy.
| | - Samantha Ruberti
- Centre for Regenerative Medicine "Stefano Ferrari", Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy.
| | - Sebastiano Rontauroli
- Centre for Regenerative Medicine "Stefano Ferrari", Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy.
| | - Paola Guglielmelli
- CRIMM, Center for Research and Innovation for Myeloproliferative Neoplasms, AOU Careggi and Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy.
| | - Simona Salati
- Centre for Regenerative Medicine "Stefano Ferrari", Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy.
| | - Chiara Rossi
- Centre for Regenerative Medicine "Stefano Ferrari", Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy.
| | - Roberta Zini
- Centre for Regenerative Medicine "Stefano Ferrari", Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy.
| | - Enrico Tagliafico
- Center for Genome Research, University of Modena and Reggio Emilia, 41125 Modena, Italy.
| | - Alessandro Maria Vannucchi
- CRIMM, Center for Research and Innovation for Myeloproliferative Neoplasms, AOU Careggi and Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy.
| | - Rossella Manfredini
- Centre for Regenerative Medicine "Stefano Ferrari", Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy.
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27
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Undi RB, Gutti U, Gutti RK. LiCl regulates mitochondrial biogenesis during megakaryocyte development. J Trace Elem Med Biol 2017; 39:193-201. [PMID: 27908414 DOI: 10.1016/j.jtemb.2016.10.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Revised: 10/06/2016] [Accepted: 10/07/2016] [Indexed: 11/26/2022]
Abstract
JAK-STAT, PI3K-AKT and MAPK signaling pathways are involved in platelet production process. Although wnt signaling has been reported in the biogenesis of platelets, but its role in megakaryocyte development is not well studied. We used an inducible canonical wnt signaling system that utilizes LiCl (GSK-3β inhibitor). LiCl could activate wnt signaling pathway along with maturation of megakaryocytes. Mitochondrial staining showed an increase in mitochondrial mass upon induction with LiCl. Also, mitochondrial markers PGC-1α and TFAM were up regulated with increase in mitochondrial DNA content. LiCl leads to increase in the ROS production, suggesting significance of mitochondria in megakaryocyte development.
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Affiliation(s)
- Ram Babu Undi
- Stem Cells and Haematological Disorders Laboratory, Department of Biochemistry, School of Life Sciences, University of Hyderabad, PO Gachibowli, Hyderabad-500046, Telangana, India
| | - Usha Gutti
- Department of Biotechnology, GITAM Institute of Science, GITAM University, Visakhapatnam-530 045, Andhra Pradesh, India.
| | - Ravi Kumar Gutti
- Stem Cells and Haematological Disorders Laboratory, Department of Biochemistry, School of Life Sciences, University of Hyderabad, PO Gachibowli, Hyderabad-500046, Telangana, India.
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28
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Houschyar KS, Momeni A, Pyles MN, Maan ZN, Whittam AJ, Siemers F. Wnt signaling induces epithelial differentiation during cutaneous wound healing. Organogenesis 2016; 11:95-104. [PMID: 26309090 DOI: 10.1080/15476278.2015.1086052] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Cutaneous wound repair in adult mammals typically does not regenerate original dermal architecture. Skin that has undergone repair following injury is not identical to intact uninjured skin. This disparity may be caused by differences in the mechanisms that regulate postnatal cutaneous wound repair compared to embryonic skin development and thus we seek a deeper understanding of the role that Wnt signaling plays in the mechanisms of skin repair in both fetal and adult wounds. The influence of secreted Wnt signaling proteins in tissue homeostasis has galvanized efforts to identify small molecules that target Wnt-mediated cellular responses. Wnt signaling is activated by wounding and participates in every subsequent stage of the healing process from the control of inflammation and programmed cell death, to the mobilization of stem cell reservoirs within the wound site. Endogenous Wnt signaling augmentation represents an attractive option to aid in the restoration of cutaneous wounds, as the complex mechanisms of the Wnt pathway have been increasingly investigated over the years. In this review, we summarize recent data elucidating the roles that Wnt signaling plays in cutaneous wound healing process.
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Affiliation(s)
- Khosrow S Houschyar
- a Division of Plastic and Reconstructive Surgery; Department of Surgery; Stanford School of Medicine ; Stanford , CA USA. ,b Clinic for Plastic and Reconstructive Surgery ; Bergmannstrost Halle , Germany
| | - Arash Momeni
- a Division of Plastic and Reconstructive Surgery; Department of Surgery; Stanford School of Medicine ; Stanford , CA USA
| | - Malcolm N Pyles
- a Division of Plastic and Reconstructive Surgery; Department of Surgery; Stanford School of Medicine ; Stanford , CA USA
| | - Zeshaan N Maan
- a Division of Plastic and Reconstructive Surgery; Department of Surgery; Stanford School of Medicine ; Stanford , CA USA
| | - Alexander J Whittam
- a Division of Plastic and Reconstructive Surgery; Department of Surgery; Stanford School of Medicine ; Stanford , CA USA
| | - Frank Siemers
- b Clinic for Plastic and Reconstructive Surgery ; Bergmannstrost Halle , Germany
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29
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Undi RB, Sarvothaman S, Narasaiah K, Gutti U, Gutti RK. Toll-like receptor 2 signalling: Significance in megakaryocyte development through wnt signalling cross-talk and cytokine induction. Cytokine 2016; 83:245-249. [DOI: 10.1016/j.cyto.2016.05.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 05/03/2016] [Accepted: 05/03/2016] [Indexed: 11/29/2022]
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30
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Yang Y, Liu C, Lei X, Wang H, Su P, Ru Y, Ruan X, Duan E, Feng S, Han M, Xu Y, Shi L, Jiang E, Zhou J. Integrated Biophysical and Biochemical Signals Augment Megakaryopoiesis and Thrombopoiesis in a Three-Dimensional Rotary Culture System. Stem Cells Transl Med 2015; 5:175-85. [PMID: 26702125 DOI: 10.5966/sctm.2015-0080] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 10/12/2015] [Indexed: 12/22/2022] Open
Abstract
Platelet transfusion has been widely used in patients undergoing chemotherapy or radiotherapy; however, the shortage of the platelet supply limits the care of patients. Although derivation of clinical-scale platelets in vitro could provide a new source for transfusion, the devices and procedures for deriving scalable platelets for clinical applications have not been established. In the present study, we found that a rotary cell culture system (RCCS) can potentiate megakaryopoiesis and significantly improve the efficiency of platelet generation. When used with chemical compounds and growth factors identified via small-scale screening, the RCCS improved platelet generation efficiency by as much as ∼3.7-fold compared with static conditions. Shear force, simulated microgravity, and better diffusion of nutrients and oxygen from the RCCS, altogether, might account for the improved efficient platelet generation. The cost-effective and highly controllable strategy and methodology represent an important step toward large-scale platelet production for future biomedical and clinical applications. Significance: Platelet transfusion has been widely used in patients undergoing chemotherapy or radiotherapy; however, the shortage of platelet supply limits the care of patients. Thus, derivation of clinical-scale platelets in vitro would provide a new source for transfusion. The present study evaluated a rotary suspension cell culture system that was able to potentiate megakaryopoiesis and significantly improved the efficiency of platelet generation. When used with chemical compounds and growth factors identified via small-scale screening, the three-dimensional system improved platelet generation efficiency compared with the static condition. The three-dimensional device and the strategy developed in the present study should markedly improve the generation of large-scale platelets for use in future biomedical and clinical settings.
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Affiliation(s)
- Yiqing Yang
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China Faculty of Laboratory Medical Science, Hebei North University, Zhangjiakou, People's Republic of China
| | - CuiCui Liu
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
| | - Xiaohua Lei
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, CAS, Beijing, People's Republic of China
| | - Hongtao Wang
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
| | - Pei Su
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
| | - Yongxin Ru
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
| | - Xinhua Ruan
- Department of Cardiovascular Surgery, Tianjin Medical University General Hospital, Tianjin, People's Republic of China
| | - Enkui Duan
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, CAS, Beijing, People's Republic of China
| | - Sizhou Feng
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
| | - Mingzhe Han
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
| | - Yuanfu Xu
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
| | - Lihong Shi
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
| | - Erlie Jiang
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
| | - Jiaxi Zhou
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
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31
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Yang Y, Liu C, Lei X, Wang H, Su P, Ru Y, Ruan X, Duan E, Feng S, Han M, Xu Y, Shi L, Jiang E, Zhou J. Integrated Biophysical and Biochemical Signals Augment Megakaryopoiesis and Thrombopoiesis in a Three-Dimensional Rotary Culture System. Stem Cells Transl Med 2015. [DOI: dx.doi.org/10.5966/sctm.2015-0080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Platelet transfusion has been widely used in patients undergoing chemotherapy or radiotherapy; however, the shortage of the platelet supply limits the care of patients. Although derivation of clinical-scale platelets in vitro could provide a new source for transfusion, the devices and procedures for deriving scalable platelets for clinical applications have not been established. In the present study, we found that a rotary cell culture system (RCCS) can potentiate megakaryopoiesis and significantly improve the efficiency of platelet generation. When used with chemical compounds and growth factors identified via small-scale screening, the RCCS improved platelet generation efficiency by as much as ∼3.7-fold compared with static conditions. Shear force, simulated microgravity, and better diffusion of nutrients and oxygen from the RCCS, altogether, might account for the improved efficient platelet generation. The cost-effective and highly controllable strategy and methodology represent an important step toward large-scale platelet production for future biomedical and clinical applications.
Significance
Platelet transfusion has been widely used in patients undergoing chemotherapy or radiotherapy; however, the shortage of platelet supply limits the care of patients. Thus, derivation of clinical-scale platelets in vitro would provide a new source for transfusion. The present study evaluated a rotary suspension cell culture system that was able to potentiate megakaryopoiesis and significantly improved the efficiency of platelet generation. When used with chemical compounds and growth factors identified via small-scale screening, the three-dimensional system improved platelet generation efficiency compared with the static condition. The three-dimensional device and the strategy developed in the present study should markedly improve the generation of large-scale platelets for use in future biomedical and clinical settings.
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Affiliation(s)
- Yiqing Yang
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China
- Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
- Faculty of Laboratory Medical Science, Hebei North University, Zhangjiakou, People's Republic of China
| | - CuiCui Liu
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China
- Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
| | - Xiaohua Lei
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, CAS, Beijing, People's Republic of China
| | - Hongtao Wang
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China
- Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
| | - Pei Su
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China
- Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
| | - Yongxin Ru
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China
- Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
| | - Xinhua Ruan
- Department of Cardiovascular Surgery, Tianjin Medical University General Hospital, Tianjin, People's Republic of China
| | - Enkui Duan
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, CAS, Beijing, People's Republic of China
| | - Sizhou Feng
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China
- Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
| | - Mingzhe Han
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China
- Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
| | - Yuanfu Xu
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China
- Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
| | - Lihong Shi
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China
- Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
| | - Erlie Jiang
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China
- Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
| | - Jiaxi Zhou
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China
- Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, and Department of Stem Cells and Regenerative Medicine, Peking Union Medical College, Tianjin, People's Republic of China
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Measured Effects of Wnt3a on Proliferation of HEK293T Cells Depend on the Applied Assay. Int J Cell Biol 2015; 2015:928502. [PMID: 26798342 PMCID: PMC4700183 DOI: 10.1155/2015/928502] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 11/24/2015] [Accepted: 12/06/2015] [Indexed: 01/11/2023] Open
Abstract
The Wnt signaling pathway has been associated with many essential cell processes. This study aims to examine the effects of Wnt signaling on proliferation of cultured HEK293T cells. Cells were incubated with Wnt3a, and the activation of the Wnt pathway was followed by analysis of the level of the β-catenin protein and of the expression levels of the target genes MYC and CCND1. The level of β-catenin protein increased up to fourfold. While the mRNA levels of c-Myc and cyclin D1 increased slightly, the protein levels increased up to a factor of 1.5. Remarkably, MTT and BrdU assays showed different results when measuring the proliferation rate of Wnt3a stimulated HEK293T cells. In the BrdU assays an increase of the proliferation rate could be detected, which correlated to the applied Wnt3a concentration. Oppositely, this correlation could not be shown in the MTT assays. The MTT results, which are based on the mitochondrial activity, were confirmed by analysis of the succinate dehydrogenase complex by immunofluorescence and by western blotting. Taken together, our study shows that Wnt3a activates proliferation of HEK293 cells. These effects can be detected by measuring DNA synthesis rather than by measuring changes of mitochondrial activity.
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Undi RB, Gutti U, Sahu I, Sarvothaman S, Pasupuleti SR, Kandi R, Gutti RK. Wnt Signaling: Role in Regulation of Haematopoiesis. Indian J Hematol Blood Transfus 2015; 32:123-34. [PMID: 27065573 DOI: 10.1007/s12288-015-0585-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 08/18/2015] [Indexed: 01/22/2023] Open
Abstract
Hematopoietic stem cells (HSCs) are a unique population of bone marrow cells which are responsible for the generation of various blood cell lineages. One of the significant characteristics of these HSCs is to self-renew, while producing differentiating cells for normal hematopoiesis. Deregulation of self-renewal and differentiation leads to the hematological malignancies. Several pathways are known to be involved in the maintenance of HSC fate among which Wnt signaling is a crucial pathway which controls development and cell fate determination. Wnt signaling also plays a major role in differentiation, self-renewal and maintenance of HSCs. Wnt ligands activate three major pathways including planar cell polarity, Wnt/β-catenin and Wnt/Ca(2+). It has been shown that Wnt/β-catenin or canonical pathway regulates cell proliferation, survival and differentiation in HSCs, deregulation of this pathway leads to hematological malignancies. Wnt non-canonical pathway regulates calcium signaling and planar cell polarity. In this review, we discuss various signaling pathways induced by Wnt ligands and their potential role in hematopoiesis.
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Affiliation(s)
- Ram Babu Undi
- Stem Cells and Haematological Disorders Laboratory, Department of Biochemistry, School of Life Sciences, University of Hyderabad, (PO) Gachibowli, Hyderabad, Telangana 500046 India
| | - Usha Gutti
- Department of Biotechnology, GITAM Institute of Science, GITAM University, Visakhapatnam, Andhra Pradesh 530 045 India
| | - Itishri Sahu
- Stem Cells and Haematological Disorders Laboratory, Department of Biochemistry, School of Life Sciences, University of Hyderabad, (PO) Gachibowli, Hyderabad, Telangana 500046 India
| | - Shilpa Sarvothaman
- Stem Cells and Haematological Disorders Laboratory, Department of Biochemistry, School of Life Sciences, University of Hyderabad, (PO) Gachibowli, Hyderabad, Telangana 500046 India
| | - Satya Ratan Pasupuleti
- Stem Cells and Haematological Disorders Laboratory, Department of Biochemistry, School of Life Sciences, University of Hyderabad, (PO) Gachibowli, Hyderabad, Telangana 500046 India
| | - Ravinder Kandi
- Stem Cells and Haematological Disorders Laboratory, Department of Biochemistry, School of Life Sciences, University of Hyderabad, (PO) Gachibowli, Hyderabad, Telangana 500046 India
| | - Ravi Kumar Gutti
- Stem Cells and Haematological Disorders Laboratory, Department of Biochemistry, School of Life Sciences, University of Hyderabad, (PO) Gachibowli, Hyderabad, Telangana 500046 India
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Ahluwalia M, Butcher L, Donovan H, Killick-Cole C, Jones PM, Erusalimsky JD. The gene expression signature of anagrelide provides an insight into its mechanism of action and uncovers new regulators of megakaryopoiesis. J Thromb Haemost 2015; 13:1103-12. [PMID: 25851510 DOI: 10.1111/jth.12959] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 04/02/2015] [Indexed: 11/29/2022]
Abstract
BACKGROUND Anagrelide is a cytoreductive agent used to lower platelet counts in essential thrombocythemia. Although the drug has been known to selectively inhibit megakaryopoiesis for many years, the molecular mechanism accounting for this activity is still unclear. OBJECTIVES AND METHODS To address this issue we have compared the global gene expression profiles of human hematopoietic cells treated ex-vivo with and without anagrelide while growing under megakaryocyte differentiation conditions, using high-density oligonucleotide microarrays. Gene expression data were validated by the quantitative polymerase chain reaction and mined to identify functional subsets and regulatory pathways. RESULTS We identified 328 annotated genes differentially regulated by anagrelide, including many genes associated with platelet functions and with the control of gene transcription. Prominent among the latter was TRIB3, whose expression increased in the presence of anagrelide. Pathway analysis revealed that anagrelide up-regulated genes that are under the control of the transcription factor ATF4, a known TRIB3 inducer. Notably, immunoblot analysis demonstrated that anagrelide induced the phosphorylation of eIF2α, which is an upstream regulator of ATF4, and increased ATF4 protein levels. Furthermore, salubrinal, an inhibitor of eIF2α dephosphorylation, increased the expression of ATF4-regulated genes and blocked megakaryocyte growth. CONCLUSIONS These findings link signaling through eIF2α/ATF4 to the anti-megakaryopoietic activity of anagrelide and identify new potential modulators of megakaryopoiesis.
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Affiliation(s)
- M Ahluwalia
- School of Health Sciences, Cardiff Metropolitan University, Cardiff, UK
| | - L Butcher
- School of Health Sciences, Cardiff Metropolitan University, Cardiff, UK
| | - H Donovan
- School of Health Sciences, Cardiff Metropolitan University, Cardiff, UK
| | - C Killick-Cole
- School of Health Sciences, Cardiff Metropolitan University, Cardiff, UK
| | - P M Jones
- School of Health Sciences, Cardiff Metropolitan University, Cardiff, UK
| | - J D Erusalimsky
- School of Health Sciences, Cardiff Metropolitan University, Cardiff, UK
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Sardina JL, López-Ruano G, Prieto-Bermejo R, Sánchez-Sánchez B, Pérez-Fernández A, Sánchez-Abarca LI, Pérez-Simón JA, Quintales L, Sánchez-Yagüe J, Llanillo M, Antequera F, Hernández-Hernández A. PTPN13 regulates cellular signalling and β-catenin function during megakaryocytic differentiation. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2014; 1843:2886-99. [PMID: 25193362 DOI: 10.1016/j.bbamcr.2014.08.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Revised: 08/08/2014] [Accepted: 08/26/2014] [Indexed: 11/18/2022]
Abstract
PTPN13 is a high-molecular weight intracellular phosphatase with several isoforms that exhibits a highly modular structure. Although in recent years different roles have been described for PTPN13, we are still far from understanding its function in cell biology. Here we show that PTPN13 expression is activated during megakaryocytic differentiation at the protein and mRNA level. Our results show that the upregulation of PTPN13 inhibits megakaryocytic differentiation, while PTPN13 silencing triggers differentiation. The ability of PTPN13 to alter megakaryocytic differentiation can be explained by its capacity to regulate ERK and STAT signalling. Interestingly, the silencing of β-catenin produced the same effect as PTPN13 downregulation. We demonstrate that both proteins coimmunoprecipitate and colocalise. Moreover, we provide evidence showing that PTPN13 can regulate β-catenin phosphorylation, stability and transcriptional activity. Therefore, the ability of PTPN13 to control megakaryocytic differentiation must be intimately linked to the regulation of β-catenin function. Moreover, our results show for the first time that PTPN13 is stabilised upon Wnt signalling, which makes PTPN13 an important player in canonical Wnt signalling. Our results show that PTPN13 behaves as an important regulator of megakaryocytic differentiation in cell lines and also in murine haematopoietic progenitors. This importance can be explained by the ability of PTPN13 to regulate cellular signalling, and especially through the regulation of β-catenin stability and function. Our results hold true for different megakaryocytic cell lines and also for haematopoietic progenitors, suggesting that these two proteins may play a relevant role during in vivo megakaryopoiesis.
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Affiliation(s)
- José L Sardina
- Department of Biochemistry and Molecular Biology, University of Salamanca, Salamanca, Spain; IBFG, Instituto de Biología Funcional y Genómica, CSIC, Salamanca 37007, Spain
| | - Guillermo López-Ruano
- Department of Biochemistry and Molecular Biology, University of Salamanca, Salamanca, Spain; IBSAL (Instituto de Investigación Biomédica de Salamanca), Salamanca 37007, Spain
| | - Rodrigo Prieto-Bermejo
- Department of Biochemistry and Molecular Biology, University of Salamanca, Salamanca, Spain; IBSAL (Instituto de Investigación Biomédica de Salamanca), Salamanca 37007, Spain
| | - Beatriz Sánchez-Sánchez
- Department of Biochemistry and Molecular Biology, University of Salamanca, Salamanca, Spain; IBSAL (Instituto de Investigación Biomédica de Salamanca), Salamanca 37007, Spain
| | - Alejandro Pérez-Fernández
- Department of Biochemistry and Molecular Biology, University of Salamanca, Salamanca, Spain; IBSAL (Instituto de Investigación Biomédica de Salamanca), Salamanca 37007, Spain
| | | | - José Antonio Pérez-Simón
- Department of Hematology, Hospital Universitario Virgen del Rocío/IBIS/CSIC/University of Seville, Spain
| | - Luis Quintales
- IBFG, Instituto de Biología Funcional y Genómica, CSIC, Salamanca 37007, Spain
| | - Jesús Sánchez-Yagüe
- Department of Biochemistry and Molecular Biology, University of Salamanca, Salamanca, Spain
| | - Marcial Llanillo
- Department of Biochemistry and Molecular Biology, University of Salamanca, Salamanca, Spain; IBSAL (Instituto de Investigación Biomédica de Salamanca), Salamanca 37007, Spain
| | - Francisco Antequera
- IBFG, Instituto de Biología Funcional y Genómica, CSIC, Salamanca 37007, Spain
| | - Angel Hernández-Hernández
- Department of Biochemistry and Molecular Biology, University of Salamanca, Salamanca, Spain; IBSAL (Instituto de Investigación Biomédica de Salamanca), Salamanca 37007, Spain.
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36
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Emmrich S, Rasche M, Schöning J, Reimer C, Keihani S, Maroz A, Xie Y, Li Z, Schambach A, Reinhardt D, Klusmann JH. miR-99a/100~125b tricistrons regulate hematopoietic stem and progenitor cell homeostasis by shifting the balance between TGFβ and Wnt signaling. Genes Dev 2014; 28:858-74. [PMID: 24736844 PMCID: PMC4003278 DOI: 10.1101/gad.233791.113] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
miR-99a/100, let-7, and miR-125b paralogs are encoded in two tricistrons and are highly expressed in hematopoietic stem cells (HSCs). Emmrich et al. demonstrate that miR-99a/100∼125b tricistrons are transcribed as a polycistronic message and functionally converge at the combinatorial block of the TGFβ pathway. Down-regulating tumor suppressor genes APC/APC2 stabilized active β-catenin and enhanced Wnt signaling. These tricistronic miRNAs promoted sustained expansion of murine and human HSCs by switching the balance between Wnt and TGFβ signaling. Although regulation of stem cell homeostasis by microRNAs (miRNAs) is well studied, it is unclear how individual miRNAs genomically encoded within an organized polycistron can interact to induce an integrated phenotype. miR-99a/100, let-7, and miR-125b paralogs are encoded in two tricistrons on human chromosomes 11 and 21. They are highly expressed in hematopoietic stem cells (HSCs) and acute megakaryoblastic leukemia (AMKL), an aggressive form of leukemia with poor prognosis. Here, we show that miR-99a/100∼125b tricistrons are transcribed as a polycistronic message transactivated by the homeobox transcription factor HOXA10. Integrative analysis of global gene expression profiling, miRNA target prediction, and pathway architecture revealed that miR-99a/100, let-7, and miR-125b functionally converge at the combinatorial block of the transforming growth factor β (TGFβ) pathway by targeting four receptor subunits and two SMAD signaling transducers. In addition, down-regulation of tumor suppressor genes adenomatous polyposis coli (APC)/APC2 stabilizes active β-catenin and enhances Wnt signaling. By switching the balance between Wnt and TGFβ signaling, the concerted action of these tricistronic miRNAs promoted sustained expansion of murine and human HSCs in vitro or in vivo while favoring megakaryocytic differentiation. Hence, our study explains the high phylogenetic conservation of the miR-99a/100∼125b tricistrons controlling stem cell homeostasis, the deregulation of which contributes to the development of AMKL.
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Affiliation(s)
- Stephan Emmrich
- Pediatric Hematology and Oncology, Hannover Medical School, Hannover 30625, Germany
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Gifre L, Ruiz-Gaspà S, Monegal A, Nomdedeu B, Filella X, Guañabens N, Peris P. Effect of glucocorticoid treatment on Wnt signalling antagonists (sclerostin and Dkk-1) and their relationship with bone turnover. Bone 2013; 57:272-6. [PMID: 23981659 DOI: 10.1016/j.bone.2013.08.016] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 08/09/2013] [Accepted: 08/13/2013] [Indexed: 02/07/2023]
Abstract
The aim of this study was to analyse the effect of glucocorticoid therapy (GCCT) on Wnt signalling antagonists (sclerostin and Dkk-1) and their relationship with bone turnover. 25 patients (8 M/17 F, aged 48±19yrs) recently initiating GCCT (≥7.5mg/day, ≤6months) were prospectively included. Bone turnover markers (bone formation: P1NP, osteocalcin [OC], bone ALP; bone resorption: sCTx) and Wnt antagonists (serum sclerostin and Dkk-1) were assessed in all patients (short-term and 12months after initiating GCCT). Bone mineral density (BMD) was performed to assess osteoporosis. The results were compared with 60 healthy controls. At short-term patients on GCCT showed a significant decrease in bone formation markers versus controls (P1NP: 19±9 vs. 43±16ng/mL, p<0.001; OC: 7.4±2.4 vs. 18.4±5.2ng/mL, p=0.001) and in Dkk-1 levels (24.5±20.1 vs. 36.8±13.7pmol/L, p=0.008) with similar sclerostin values (41.8±21.8 vs. 42.1±13.9pmol/L, p=0.950). Sclerostin correlated positively with GCCT doses (r=0.449, p=0.024) and lumbar BMD (r=0.424, p=0.035), and negatively with bone ALP (r=-0.398, p=0.049). A progressive decrease in Dkk-1 levels was observed at 12months, (19.1±14.9, p=0.001), whereas sclerostin increased compared to controls (48.9±11.6, p=0.045). In conclusion, the effect of GCCT on the serum levels of the Wnt signalling parameters differs depending on the antagonist evaluated. Whereas sclerostin values increased and showed a relationship with the dose and bone AP, Dkk-1 levels decreased throughout the study suggesting a counter-regulatory mechanism of this factor thereby reducing the deleterious effect of GCCT in the bone.
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Affiliation(s)
- L Gifre
- Rheumatology Department, Metabolic Bone Diseases Unit, Hospital Clínic of Barcelona, Spain.
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