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Kim MC, De U, Borcherding N, Wang L, Paek J, Bhattacharyya I, Yu Q, Kolb R, Drashansky T, Thatayatikom A, Zhang W, Cha S. Single-cell transcriptomics unveil profiles and interplay of immune subsets in rare autoimmune childhood Sjögren's disease. Commun Biol 2024; 7:481. [PMID: 38641668 PMCID: PMC11031574 DOI: 10.1038/s42003-024-06124-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 03/29/2024] [Indexed: 04/21/2024] Open
Abstract
Childhood Sjögren's disease represents critically unmet medical needs due to a complete lack of immunological and molecular characterizations. This study presents key immune cell subsets and their interactions in the periphery in childhood Sjögren's disease. Here we show that single-cell RNA sequencing identifies the subsets of IFN gene-enriched monocytes, CD4+ T effector memory, and XCL1+ NK cells as potential key players in childhood Sjögren's disease, and especially in those with recurrent parotitis, which is the chief symptom prompting clinical visits from young children. A unique cluster of monocytes with type I and II IFN-related genes is identified in childhood Sjögren's disease, compared to the age-matched control. In vitro regulatory T cell functional assay demonstrates intact functionality in childhood Sjögren's disease in contrast to reduced suppression in adult Sjögren's disease. Mapping this transcriptomic landscape and interplay of immune cell subsets will expedite the understanding of childhood Sjögren's disease pathogenesis and set the foundation for precision medicine.
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Affiliation(s)
- Myung-Chul Kim
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida College of Medicine, Gainesville, FL, 32610, USA
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
- Diagnostic Laboratory Medicine, College of Veterinary Medicine, Jeju National University, Jeju, 63243, Republic of Korea
- Research Institute of Veterinary Medicine, College of Veterinary Medicine, Jeju National University, Jeju, 63243, Republic of Korea
- Center for Orphaned Autoimmune Disorders, University of Florida College of Dentistry, Gainesville, FL, 32610, USA
| | - Umasankar De
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida College of Medicine, Gainesville, FL, 32610, USA
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
| | - Nicholas Borcherding
- Department of Pathology & Immunology, Washington University School of Medicine in St. Louis, St Louis, MO, 63110, USA
| | - Lei Wang
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida College of Medicine, Gainesville, FL, 32610, USA
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
| | - Joon Paek
- Center for Orphaned Autoimmune Disorders, University of Florida College of Dentistry, Gainesville, FL, 32610, USA
- Department of Pathology & Immunology, Washington University School of Medicine in St. Louis, St Louis, MO, 63110, USA
| | - Indraneel Bhattacharyya
- Center for Orphaned Autoimmune Disorders, University of Florida College of Dentistry, Gainesville, FL, 32610, USA
- Department of Oral & Maxillofacial Diagnostic Sciences, University of Florida College of Dentistry, Gainesville, FL, 32610, USA
| | - Qing Yu
- The Forsyth Institute, Cambridge, MA, 02142, USA
| | - Ryan Kolb
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida College of Medicine, Gainesville, FL, 32610, USA
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
| | | | | | - Weizhou Zhang
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida College of Medicine, Gainesville, FL, 32610, USA.
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA.
| | - Seunghee Cha
- Center for Orphaned Autoimmune Disorders, University of Florida College of Dentistry, Gainesville, FL, 32610, USA.
- Department of Oral & Maxillofacial Diagnostic Sciences, University of Florida College of Dentistry, Gainesville, FL, 32610, USA.
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Casalin I, De Stefano A, Ceneri E, Cappellini A, Finelli C, Curti A, Paolini S, Parisi S, Zannoni L, Boultwood J, McCubrey JA, Suh PG, Ramazzotti G, Fiume R, Ratti S, Manzoli L, Cocco L, Follo MY. Deciphering signaling pathways in hematopoietic stem cells: the molecular complexity of Myelodysplastic Syndromes (MDS) and leukemic progression. Adv Biol Regul 2024; 91:101014. [PMID: 38242820 DOI: 10.1016/j.jbior.2024.101014] [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: 11/10/2023] [Revised: 01/03/2024] [Accepted: 01/08/2024] [Indexed: 01/21/2024]
Abstract
Myelodysplastic Syndromes, a heterogeneous group of hematological disorders, are characterized by abnormalities in phosphoinositide-dependent signaling, epigenetic regulators, apoptosis, and cytokine interactions within the bone marrow microenvironment, contributing to disease pathogenesis and neoplastic growth. Comprehensive knowledge of these pathways is crucial for the development of innovative therapies that aim to restore normal apoptosis and improve patient outcomes.
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Affiliation(s)
- Irene Casalin
- Department of Biomedical and Neuromotor Science, Cellular Signaling Laboratory, University of Bologna, Bologna, Italy.
| | - Alessia De Stefano
- Department of Biomedical and Neuromotor Science, Cellular Signaling Laboratory, University of Bologna, Bologna, Italy
| | - Eleonora Ceneri
- Department of Biomedical and Neuromotor Science, Cellular Signaling Laboratory, University of Bologna, Bologna, Italy
| | - Alessandra Cappellini
- Department of Biomedical and Neuromotor Science, Cellular Signaling Laboratory, University of Bologna, Bologna, Italy
| | - Carlo Finelli
- IRCCS Azienda Ospedaliero-Universitaria di Bologna - Istituto di Ematologia "Seràgnoli", Bologna, Italy
| | - Antonio Curti
- IRCCS Azienda Ospedaliero-Universitaria di Bologna - Istituto di Ematologia "Seràgnoli", Bologna, Italy
| | - Stefania Paolini
- IRCCS Azienda Ospedaliero-Universitaria di Bologna - Istituto di Ematologia "Seràgnoli", Bologna, Italy
| | - Sarah Parisi
- IRCCS Azienda Ospedaliero-Universitaria di Bologna - Istituto di Ematologia "Seràgnoli", Bologna, Italy
| | - Letizia Zannoni
- IRCCS Azienda Ospedaliero-Universitaria di Bologna - Istituto di Ematologia "Seràgnoli", Bologna, Italy
| | - Jacqueline Boultwood
- Bloodwise Molecular Haematology Unit, Nuffield Division of Clinical Laboratory Sciences, Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - James A McCubrey
- Department of Microbiology & Immunology, Brody School of Medicine, East Carolina University, Greenville, NC, 27834, USA
| | - Pann-Ghill Suh
- Korea Brain Research Institute, Daegu, 41062, Republic of Korea
| | - Giulia Ramazzotti
- Department of Biomedical and Neuromotor Science, Cellular Signaling Laboratory, University of Bologna, Bologna, Italy
| | - Roberta Fiume
- Department of Biomedical and Neuromotor Science, Cellular Signaling Laboratory, University of Bologna, Bologna, Italy
| | - Stefano Ratti
- Department of Biomedical and Neuromotor Science, Cellular Signaling Laboratory, University of Bologna, Bologna, Italy
| | - Lucia Manzoli
- Department of Biomedical and Neuromotor Science, Cellular Signaling Laboratory, University of Bologna, Bologna, Italy
| | - Lucio Cocco
- Department of Biomedical and Neuromotor Science, Cellular Signaling Laboratory, University of Bologna, Bologna, Italy
| | - Matilde Y Follo
- Department of Biomedical and Neuromotor Science, Cellular Signaling Laboratory, University of Bologna, Bologna, Italy
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Santos EW, Dias CC, Fock RA, Paredes-Gamero EJ, Zheng YM, Wang YX, Borelli P. Protein restriction impairs the response activation/responsivity of MAPK signaling pathway of hematopoietic stem cells. Nutr Res 2023; 116:12-23. [PMID: 37320947 DOI: 10.1016/j.nutres.2023.05.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 05/11/2023] [Accepted: 05/20/2023] [Indexed: 06/17/2023]
Abstract
Protein restriction (PR) leads to bone marrow hypoplasia with changes in stromal cellularity components of the extracellular matrix in hematopoietic stem cells (HSCs). However, the underlying signaling mechanisms are poorly understood. We hypothesize that PR impairs the HSC mitogen-activated protein kinase (MAPK) signaling pathway response activation. Our aim is to evaluate the activation of MAPK and interleukin-3 (IL-3) proteins in HSC to explain PR-induced bone marrow hypoplasia, which causes altered proliferation and differentiation. C57BL/6 male mice were subjected to a low-protein diet (2% protein) or normoproteic (12% protein). PKC, PLCγ2, CaMKII, AKT, STAT3/5, ERK1/2, JNK, and p38d phosphorylation were evaluated by flow cytometry, and GATA1/2, PU.1, C/EBPα, NF-E2, and Ikz-3 genes (mRNAs) assessed by quantitative real-time-polymerase chain reaction. Pathway proteins, such as PLCγ2, JAK2, STAT3/5, PKC, and RAS do not respond to the IL-3 stimulus in PR, leading to lower activation of ERK1/2 and Ca2+ signaling pathways, consequently lowering the production of hematopoietic transcription factors. Colony forming units granulocyte-macrophage and colony forming units macrophage formation are impaired in PR even after being stimulated with IL-3. Long-term hematopoietic stem cells, short-term hematopoietic stem cells, granulocyte myeloid progenitor, and megakaryocyte-erythroid progenitor cells were significantly reduced in PR animals. This study shows for the first time that activation of MAPK pathway key proteins in HSCs is impaired in cases of PR. Several pathway proteins, such as PLCγ2, JAK2, STAT3, PKC, and RAS do not respond to IL-3 stimulation, leading to lower activation of extracellular signal-regulated protein kinase 1/2 and consequently lower production of hematopoietic transcription factors GATA1/2, PU.1, C/EBPa, NF-E2, and Ikz3. These changes result in a reduction in colony-forming units, proliferation, and differentiation, leading to hypocellularity.
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Affiliation(s)
- Ed Wilson Santos
- Department of Molecular and Cellular Physiology, Albany Medical College, NY, USA; Experimental Hematology Laboratory, Department of Clinical e Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil.
| | - Carolina Carvalho Dias
- Experimental Hematology Laboratory, Department of Clinical e Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil.
| | - Ricardo Ambrósio Fock
- Experimental Hematology Laboratory, Department of Clinical e Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil.
| | - Edgar Julian Paredes-Gamero
- Faculty of Pharmaceutical Sciences, Food and Nutrition (FACFAN), Federal University of Mato Grosso do Sul, 79070-900, Campo Grande, Mato Grosso do Sul, Brazil.
| | - Yun-Min Zheng
- Department of Molecular and Cellular Physiology, Albany Medical College, NY, USA.
| | - Yong-Xiao Wang
- Department of Molecular and Cellular Physiology, Albany Medical College, NY, USA.
| | - Primavera Borelli
- Experimental Hematology Laboratory, Department of Clinical e Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil.
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Intestinal Intervention Strategy Targeting Myeloid Cells to Improve Hepatic Immunity during Hepatocarcinoma Development. Biomedicines 2021; 9:biomedicines9111633. [PMID: 34829862 PMCID: PMC8615385 DOI: 10.3390/biomedicines9111633] [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: 10/10/2021] [Revised: 11/01/2021] [Accepted: 11/03/2021] [Indexed: 02/07/2023] Open
Abstract
Innate immunity in the tumor microenvironment plays a pivotal role in hepatocarcinoma (HCC) progression. Plant seeds provide serine-type protease inhibitors (SETIs), which can have a significant influence on liver inflammation and macrophage function. To elucidate the influence of SETIs to counter pro-tumorigenic conditions, at the early stages of HCC development, it was used as an established model of diethylnitrosamine/thioacetamide-injured liver fed with a standard diet (STD) or high-fat diet (42%) (HFD). The administration of SETIs improved survival and ameliorated tumor burden via modulation of monocyte-derived macrophages as key effectors involved in diet-induced HCC development. RT-qPCR analyses of hepatic tissue evidenced a diet-independent downregulatory effect of SETIs on the transcripts of CD36, FASN, ALOX15, and SREBP1c; however, animals fed with an STD showed opposing effects for PPAR and NRLP3 levels. These effects were accompanied by a decreased production of IL-6 and IL-17 but increased that of TNF in animals receiving SETIs. Moreover, only animals fed an HFD displayed increased concentrations of the stem cell factor. Overall, SETIs administration decreased the hepatic contents of lysophosphatydilcholine, phosphatidylinositol, phosphatidylcholine, and phosphatidyl ethanolamine. Notably, animals that received SETIs exhibited increased hepatic proportions of CD68+CX3CR1+CD74+ cells and at a higher rate in those animals fed an HFD. Altogether, the data evidence that oral administration of SETIs modulates the tumor microenvironment, improving hepatic innate immune response(s) and favoring a better antitumoral environment. It represents a path forward in developing coadjutant strategies to pharmacological therapies, with either a preventive or therapeutic character, to counter physiopathological conditions at early stages of HCC development.
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Abstract
Acute myeloid leukaemia (AML) is a haematological cancer with poor outcomes due to a lack of efficacious targeted therapies. The Nuclear Factor of Activated T Cells (NFAT) family of transcription factors is well characterised as a regulator of the cell cycle and differentiation in the myeloid lineage. Recent evidence has demonstrated that NFAT family members may have roles in regulating AML leukemogenesis and resistance to targeted therapy in myeloid leukaemia. Furthermore, gene expression data from patient samples show that some NFATs are more highly expressed in poorly differentiated AML and after disease relapse, implying that the NFAT family may have roles in specific types of AML. This review outlines the evidence for the role of NFAT in healthy myeloid tissue and explores how NFAT might regulate AML pathogenesis, highlighting the potential to target specific NFAT proteins therapeutically in AML.
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Li Z, Zhao R, Yang W, Li C, Huang J, Wen Z, Du G, Jiang L. PLCG2 as a potential indicator of tumor microenvironment remodeling in soft tissue sarcoma. Medicine (Baltimore) 2021; 100:e25008. [PMID: 33725976 PMCID: PMC7982206 DOI: 10.1097/md.0000000000025008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 02/11/2021] [Indexed: 01/05/2023] Open
Abstract
The tumor microenvironment (TME) plays an important role in the occurrence and development of soft tissue sarcoma (STS). A number of studies have shown that to inhibit tumor growth, the TME can be remodeled into an environment unsuitable for tumor proliferation. However, a lack of understanding exists regarding the dynamic regulation of TME.In this study, we used CIBERSORT and ESTIMATE calculation methods from the Cancer Genome Atlas (TCGA) database to calculate the proportion of tumor infiltrating immune cells (TICs) and the number of immune and stromal components in 263 STS samples. Differential expression genes (DEGs) shared by Immune Score and Stromal Score were obtained via difference analysis. Univariate Cox regression analysis and construction of protein-protein interaction (PPI) networks were applied to the DEGs.Through intersection analysis of univariate COX and PPI, PLCG2 was determined as the indicator. Further analysis showed that PLCG2 expression was positively correlated with the survival of STS patients. Gene set enrichment analysis (GSEA) showed that genes in the highly expressed PLCG2 group were enriched in immune-related activities. In the low-expression PLCG2 group, genes were enriched in the E2F, G2M, and MYC pathways. Difference analysis and correlation analysis showed that CD8+ T cells, gamma delta T cells, monocytes, and M1 macrophages were positively correlated with PLCG2 expression, indicating that PLCG2 may represent the immune status of TME.Therefore, the level of PLCG2 may aid in determining the prognosis of STS patients, especially the status of TME. These data provide additional insights into the remodeling of TME.
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Affiliation(s)
| | | | | | | | | | | | - Gang Du
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning
| | - Lingling Jiang
- Department of Anesthesiology, The second Hospital of Anhui Medical University, Hefei, China
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Interface of Phospholipase Activity, Immune Cell Function, and Atherosclerosis. Biomolecules 2020; 10:biom10101449. [PMID: 33076403 PMCID: PMC7602611 DOI: 10.3390/biom10101449] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 09/30/2020] [Accepted: 10/13/2020] [Indexed: 12/16/2022] Open
Abstract
Phospholipases are a family of lipid-altering enzymes that can either reduce or increase bioactive lipid levels. Bioactive lipids elicit signaling responses, activate transcription factors, promote G-coupled-protein activity, and modulate membrane fluidity, which mediates cellular function. Phospholipases and the bioactive lipids they produce are important regulators of immune cell activity, dictating both pro-inflammatory and pro-resolving activity. During atherosclerosis, pro-inflammatory and pro-resolving activities govern atherosclerosis progression and regression, respectively. This review will look at the interface of phospholipase activity, immune cell function, and atherosclerosis.
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8
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Hu X, Li S, Doycheva DM, Huang L, Lenahan C, Liu R, Huang J, Xie S, Tang J, Zuo G, Zhang JH. Rh-CSF1 attenuates neuroinflammation via the CSF1R/PLCG2/PKCε pathway in a rat model of neonatal HIE. J Neuroinflammation 2020; 17:182. [PMID: 32522286 PMCID: PMC7285566 DOI: 10.1186/s12974-020-01862-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 05/29/2020] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Hypoxic-ischemic encephalopathy (HIE) is a life-threatening cerebrovascular disease. Neuroinflammation plays an important role in the pathogenesis of HIE, in which microglia are key cellular mediators in the regulation of neuroinflammatory processes. Colony-stimulating factor 1 (CSF1), a specific endogenous ligand of CSF1 receptor (CSF1R), is crucial in microglial growth, differentiation, and proliferation. Recent studies showed that the activation of CSF1R with CSF1 exerted anti-inflammatory effects in a variety of nervous system diseases. This study aimed to investigate the anti-inflammatory effects of recombinant human CSF1 (rh-CSF1) and the underlying mechanisms in a rat model of HIE. METHODS A total of 202 10-day old Sprague Dawley rat pups were used. HI was induced by the right common carotid artery ligation with subsequent exposure of 2.5-h hypoxia. At 1 h and 24 h after HI induction, exogenous rh-CSF1 was administered intranasally. To explore the underlying mechanism, CSF1R inhibitor, BLZ945, and phospholipase C-gamma 2 (PLCG2) inhibitor, U73122, were injected intraperitoneally at 1 h before HI induction, respectively. Brain infarct area, brain water content, neurobehavioral tests, western blot, and immunofluorescence staining were performed. RESULTS The expressions of endogenous CSF1, CSF1R, PLCG2, protein kinase C epsilon type (PKCε), and cAMP response element-binding protein (CREB) were gradually increased after HIE. Rh-CSF1 significantly improved the neurological deficits at 48 h and 4 weeks after HI, which was accompanied by a reduction in the brain infarct area, brain edema, brain atrophy, and neuroinflammation. Moreover, activation of CSF1R by rh-CSF1 significantly increased the expressions of p-PLCG2, p-PKCε, and p-CREB, but inhibited the activation of neutrophil infiltration, and downregulated the expressions of IL-1β and TNF-α. Inhibition of CSF1R and PLCG2 abolished these neuroprotective effects of rh-CSF1 after HI. CONCLUSIONS Our findings demonstrated that the activation of CSF1R by rh-CSF1 attenuated neuroinflammation and improved neurological deficits after HI. The anti-inflammatory effects of rh-CSF1 partially acted through activating the CSF1R/PLCG2/PKCε/CREB signaling pathway after HI. These results suggest that rh-CSF1 may serve as a potential therapeutic approach to ameliorate injury in HIE patients.
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Affiliation(s)
- Xiao Hu
- Department of Neurology, Guizhou Provincial People's Hospital, Guiyang, 550002, China.,Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA
| | - Shirong Li
- Department of Neurology, Guizhou Provincial People's Hospital, Guiyang, 550002, China.,Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA
| | - Desislava Met Doycheva
- Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA
| | - Lei Huang
- Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA.,Department of Neurosurgery, Loma Linda University, Loma Linda, CA, 92350, USA
| | - Cameron Lenahan
- Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA.,Bvrrell College of Osteopathic Medicine, Las Cruces, NM, 88003, USA
| | - Rui Liu
- Department of Neurology, Guizhou Provincial People's Hospital, Guiyang, 550002, China.,Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA
| | - Juan Huang
- Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA.,Institute of Neuroscience, Chongqing Medical University, Chongqing, 400016, China
| | - Shucai Xie
- Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA.,Department of Hepatobiliary Surgery, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, 570208, Hainan, China
| | - Jiping Tang
- Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA
| | - Gang Zuo
- Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA. .,Department of Neurosurgery, Taicang Hospital Affiliated to Soochow University, Taicang, Suzhou, 215400, Jiangsu, China.
| | - John H Zhang
- Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, CA, 92350, USA. .,Department of Neurosurgery, Loma Linda University, Loma Linda, CA, 92350, USA. .,Department of Anesthesiology, Loma Linda University, Loma Linda, CA, 92350, USA.
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Abstract
Phospholipase C (PLC) family members constitute a family of diverse enzymes. Thirteen different family members have been cloned. These family members have unique structures that mediate various functions. Although PLC family members all appear to signal through the bi-products of cleaving phospholipids, it is clear that each family member, and at times each isoform, contributes to unique cellular functions. This chapter provides a review of the current literature on PLC. In addition, references have been provided for more in-depth information regarding areas that are not discussed including tyrosine kinase activation of PLC. Understanding the roles of the individual PLC enzymes, and their distinct cellular functions, will lead to a better understanding of the physiological roles of these enzymes in the development of diseases and the maintenance of homeostasis.
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Extracellular annexin-A1 promotes myeloid/granulocytic differentiation of hematopoietic stem/progenitor cells via the Ca 2+/MAPK signalling transduction pathway. Cell Death Discov 2019; 5:135. [PMID: 31552142 PMCID: PMC6755131 DOI: 10.1038/s41420-019-0215-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 07/19/2019] [Accepted: 08/24/2019] [Indexed: 12/14/2022] Open
Abstract
Annexin A1 (AnxA1) modulates neutrophil life span and bone marrow/blood cell trafficking thorough activation of formyl-peptide receptors (FPRs). Here, we investigated the effect of exogenous AnxA1 on haematopoiesis in the mouse. Treatment of C57BL/6 mice with recombinant AnxA1 (rAnxA1) reduced the granulocyte–macrophage progenitor (GMP) population in the bone marrow, enhanced the number of mature granulocytes Gr-1+Mac-1+ in the bone marrow as well as peripheral granulocytic neutrophils and increased expression of mitotic cyclin B1 on hematopoietic stem cells (HSCs)/progenitor cells (Lin−Sca-1+c-Kit+: LSK). These effects were abolished by simultaneous treatment with Boc-2, an FPR pan-antagonist. In in vitro studies, rAnxA1 reduced both HSC (LSKCD90lowFLK-2−) and GMP populations while enhancing mature cells (Gr1+Mac1+). Moreover, rAnxA1 induced LSK cell proliferation (Ki67+), increasing the percentage of cells in the S/G2/M cell cycle phases and reducing Notch-1 expression. Simultaneous treatment with WRW4, a selective FPR2 antagonist, reversed the in vitro effects elicited by rAnxA1. Treatment of LSK cells with rAnxA1 led to phosphorylation of PCLγ2, PKC, RAS, MEK, and ERK1/2 with increased expression of NFAT2. In long-term bone marrow cultures, rAnxA1 did not alter the percentage of LSK cells but enhanced the Gr-1+Mac-1+ population; treatment with a PLC (U73122), but not with a PKC (GF109203), inhibitor reduced rAnxA1-induced phosphorylation of ERK1/2 and Elk1. Therefore, we identify here rAnxA1 as an inducer of HSC/progenitor cell differentiation, favouring differentiation of the myeloid/granulocytic lineage, via Ca2+/MAPK signalling transduction pathways.
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Response of high-risk MDS to azacitidine and lenalidomide is impacted by baseline and acquired mutations in a cluster of three inositide-specific genes. Leukemia 2019; 33:2276-2290. [PMID: 30787430 PMCID: PMC6733710 DOI: 10.1038/s41375-019-0416-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 01/18/2019] [Accepted: 01/22/2019] [Indexed: 12/26/2022]
Abstract
Specific myeloid-related and inositide-specific gene mutations can be linked to myelodysplastic syndromes (MDS) pathogenesis and therapy. Here, 44 higher-risk MDS patients were treated with azacitidine and lenalidomide and mutations analyses were performed at baseline and during the therapy. Results were then correlated to clinical outcome, overall survival (OS), leukemia-free-survival (LFS) and response to therapy. Collectively, 34/44 patients were considered evaluable for response, with an overall response rate of 76.25% (26/34 cases): 17 patients showed a durable response, 9 patients early lost response and 8 patients never responded. The most frequently mutated genes were ASXL1, TET2, RUNX1, and SRSF2. All patients early losing response, as well as cases never responding, acquired the same 3 point mutations during therapy, affecting respectively PIK3CD (D133E), AKT3 (D280G), and PLCG2 (Q548R) genes, that regulate cell proliferation and differentiation. Moreover, Kaplan–Meier analyses revealed that this mutated cluster was significantly associated with a shorter OS, LFS, and duration of response. All in all, a common mutated cluster affecting 3 inositide-specific genes is significantly associated with loss of response to azacitidine and lenalidomide therapy in higher risk MDS. Further studies are warranted to confirm these data and to further analyze the functional role of this 3-gene cluster.
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12
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Follo MY, Ratti S, Manzoli L, Ramazzotti G, Faenza I, Fiume R, Mongiorgi S, Suh PG, McCubrey JA, Cocco L. Inositide-Dependent Nuclear Signalling in Health and Disease. Handb Exp Pharmacol 2019; 259:291-308. [PMID: 31889219 DOI: 10.1007/164_2019_321] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Nuclear inositides have a specific subcellular distribution that is linked to specific functions; thus their regulation is fundamental both in health and disease. Emerging evidence shows that alterations in multiple inositide signalling pathways are involved in pathophysiology, not only in cancer but also in other diseases. Here, we give an overview of the main features of inositides in the cell, and we discuss their potential as new molecular therapeutic targets.
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Affiliation(s)
- Matilde Y Follo
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Stefano Ratti
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Lucia Manzoli
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Giulia Ramazzotti
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Irene Faenza
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Roberta Fiume
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Sara Mongiorgi
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Pann Ghill Suh
- Korea Brain Research Institute, Daegu, Republic of Korea.,School of Life Sciences, UNIST, Ulsan, Republic of Korea
| | - James A McCubrey
- Department of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC, USA
| | - Lucio Cocco
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy.
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13
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Abstract
Micronutrients are indispensable for adequate metabolism, such as biochemical function and cell production. The production of blood cells is named haematopoiesis and this process is highly consuming due to the rapid turnover of the haematopoietic system and consequent demand for nutrients. It is well established that micronutrients are relevant to blood cell production, although some of the mechanisms of how micronutrients modulate haematopoiesis remain unknown. The aim of the present review is to summarise the effect of Fe, Mn, Ca, Mg, Na, K, Co, iodine, P, Se, Cu, Li and Zn on haematopoiesis. This review deals specifically with the physiological requirements of selected micronutrients to haematopoiesis, showing various studies related to the physiological requirements, deficiency or excess of these minerals on haematopoiesis. The literature selected includes studies in animal models and human subjects. In circumstances where these minerals have not been studied for a given condition, no information was used. All the selected minerals have an important role in haematopoiesis by influencing the quality and quantity of blood cell production. In addition, it is highly recommended that the established nutrition recommendations for these minerals be followed, because cases of excess or deficient mineral intake can affect the haematopoiesis process.
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14
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Wang X, Chu Q, Jiang X, Yu Y, Wang L, Cui Y, Lu J, Teng L, Wang D. Sarcodon imbricatus polysaccharides improve mouse hematopoietic function after cyclophosphamide-induced damage via G-CSF mediated JAK2/STAT3 pathway. Cell Death Dis 2018; 9:578. [PMID: 29784961 PMCID: PMC5962553 DOI: 10.1038/s41419-018-0634-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 04/22/2018] [Accepted: 04/23/2018] [Indexed: 12/20/2022]
Abstract
Sarcodon imbricatus, a rare medicinal and edible fungus, has various pharmacological bioactivities. We investigated the effects of S. imbricatus polysaccharides (SIPS) on hematopoietic function and identified the underlying mechanisms using in vitro experiments with CHRF, K562, and bone marrow mononuclear cells (BMMNCs) and in vivo experiments with a mouse model of cyclophosphamide-induced hematopoietic dysfunction. We found that SIPS induced proliferation and differentiation of CHRF and K562 cells and upregulated the expression of hematopoietic-related proteins, including p90 ribosomal S6 kinases (RSK1p90), c-Myc, and ETS transcription factor, in the two cell lines. After 28 days of treatment, SIPS enhanced the bodyweight and thymus indices of the mice, alleviated enlargement of the spleen and liver, and contributed to the recovery of peripheral blood to normal levels. More importantly, the percentages of B lymphocytes and hematopoietic stem cells or hematopoietic progenitor cells were significantly elevated in bone marrow. Based on an antibody chip analysis and enzyme-linked immunosorbent assay, SIPS were found to successfully regulate 12 cytokines to healthy levels in serum and spleen. The cytokines included the following: interleukins 1Ra, 2, 3, 4, 5, and 6, tumor necrosis factor α, interferon−γ, granulocyte colony-stimulating factor (G-CSF) and macrophage colony-stimulating factor (M-CSF), C-C motif chemokine1, and monocyte chemoattractant protein−1. Moreover, SIPS upregulated the phosphorylation levels of janus kinase 2 (JAK2) and the signal transducer and activator of transcription 3 (STAT3) in the spleen, and similar results were validated in CHRF cells, K562 cells, and BMMNCs. The data indicate that SIPS activated the JAK2/STAT3 pathway, possibly by interactions among multiple cytokines, particularly G-CSF. We found that SIPS was remarkably beneficial to the bone marrow hematopoietic system, and we anticipate that it could improve myelosuppression induced by long-term radiotherapy or chemotherapy.
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Affiliation(s)
- Xue Wang
- School of Life Sciences, Jilin University, Changchun, 130012, China
| | - Qiubo Chu
- School of Life Sciences, Jilin University, Changchun, 130012, China
| | - Xue Jiang
- School of Life Sciences, Jilin University, Changchun, 130012, China
| | - Yue Yu
- School of Life Sciences, Jilin University, Changchun, 130012, China
| | - Libian Wang
- School of Life Sciences, Jilin University, Changchun, 130012, China
| | - Yaqi Cui
- School of Life Sciences, Jilin University, Changchun, 130012, China
| | - Jiahui Lu
- School of Life Sciences, Jilin University, Changchun, 130012, China
| | - Lirong Teng
- School of Life Sciences, Jilin University, Changchun, 130012, China. .,Zhuhai College of Jilin University, Jilin University, Zhuhai, 519041, China.
| | - Di Wang
- School of Life Sciences, Jilin University, Changchun, 130012, China. .,Zhuhai College of Jilin University, Jilin University, Zhuhai, 519041, China.
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15
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Bendickova K, Tidu F, Fric J. Calcineurin-NFAT signalling in myeloid leucocytes: new prospects and pitfalls in immunosuppressive therapy. EMBO Mol Med 2018; 9:990-999. [PMID: 28606994 PMCID: PMC5538425 DOI: 10.15252/emmm.201707698] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Myeloid leucocytes mediate host protection against infection and critically regulate inflammatory responses in body tissues. Pattern recognition receptor signalling is crucial for myeloid cell responses to pathogens, but growing evidence suggests an equally potent role for Calcineurin–NFAT signalling in control of myeloid cell function. All major subsets of myeloid leucocytes employ Calcineurin–NFAT signalling during immune responses to pathogens and/or tissue damage, but the influence this pathway exerts on pathogen clearance and host susceptibility to infection is not fully understood. Recent data from experimental models indicate that Calcineurin‐NFAT signalling is essential for infection control, and calcineurin inhibitors used in transplantation medicine (including cyclosporine A and tacrolimus) are now being tested for efficacy in a diverse range of inflammatory conditions and autoimmune pathologies. Efforts to repurpose calcineurin inhibitor drugs for new therapeutic applications may yield rapid improvements in clinical outcomes, but the potential impact of these compounds on myeloid cell function in treated patients is largely unknown. Here we discuss Calcineurin–NFAT control of myeloid leucocyte function in the context of recent therapeutic developments and ongoing clinical studies.
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Affiliation(s)
- Kamila Bendickova
- Center for Translational Medicine (CTM), International Clinical Research Center (ICRC), St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Federico Tidu
- Center for Translational Medicine (CTM), International Clinical Research Center (ICRC), St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Jan Fric
- Center for Translational Medicine (CTM), International Clinical Research Center (ICRC), St. Anne's University Hospital Brno, Brno, Czech Republic
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16
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Piva MBR, Jakubzig B, Bendas G. Integrin Activation Contributes to Lower Cisplatin Sensitivity in MV3 Melanoma Cells by Inducing the Wnt Signalling Pathway. Cancers (Basel) 2017; 9:cancers9090125. [PMID: 28926938 PMCID: PMC5615340 DOI: 10.3390/cancers9090125] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 09/12/2017] [Accepted: 09/13/2017] [Indexed: 12/13/2022] Open
Abstract
Background: integrins have been associated with the development of chemotherapy resistant tumour cells, mostly those of hematopoietic origin, by mediating the binding to the extracellular matrix. The relevance for solid tumour cells and the underlying mechanisms remain elusive. Methods: using MTT assays, we detected the loss in cisplatin sensitivity of human MV3 melanoma cells upon integrin activation. Underlying cellular pathways were evaluated by flow cytometry. A crosstalk between integrin activation and the canonical wnt signalling pathway was tested by measuring β-catenin activity. Results: MV3 cells display a higher resistance against cisplatin cytotoxicity when cellular integrins were activated by manganese or collagen. Proteome profiler array showed a deregulation of the integrin expression pattern by cisplatin. Integrin activation by manganese induces the phosphorylation of PI3K/AKT. The inhibition of PI3K using BEZ235 strongly increases cell sensitivity to cisplatin, blocking manganese and collagen effects. PI3K/AKT activates wnt signalling by blocking Gsk3-β, which was confirmed by β-catenin up-regulation and nuclear localization. Integrins did not affect E-cadherin expression levels, thus endothelial to mesenchymal transition (EMT) can be excluded. Conclusion: This is the first report on an integrin/wnt signalling activation axis addressing the consequences for chemotherapy sensitiveness of melanoma cells, which thus offers novel therapeutic targets for approaches to interfere with chemoresistance.
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Affiliation(s)
- Maria B R Piva
- Department of Pharmacy, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany.
| | - Bastian Jakubzig
- Department of Pharmacy, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany.
| | - Gerd Bendas
- Department of Pharmacy, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany.
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17
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Park J, Lee JW, Cooper SC, Broxmeyer HE, Cannon JR, Kim CH. Parkinson disease-associated LRRK2 G2019S transgene disrupts marrow myelopoiesis and peripheral Th17 response. J Leukoc Biol 2017; 102:1093-1102. [PMID: 28751472 DOI: 10.1189/jlb.1a0417-147rr] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 07/06/2017] [Accepted: 07/07/2017] [Indexed: 12/12/2022] Open
Abstract
Parkinson's disease (PD) is a neurodegenerative disease, whereas Crohn's disease is an inflammatory bowel disease. Interestingly, polymorphisms in the LRRK2 gene have been identified as risk factors for both diseases. LRRK2 G2019S is the most prevalent mutation found in PD. To gain insights into the role of the LRRK2 G2019S gene on the development and activation of the immune system in the brain-gut axis, we investigated the effect of LRRK2 G2019S on bone marrow myeloid progenitors and myeloid cell function in the periphery. We used bacterial artificial chromosome transgenic rats harboring the human LRRK2 G2019S gene. LRRK2 G2019S transgene decreased the numbers of monocytic and granulocytic progenitors in the bone marrow. However, the numbers of peripheral, immature myeloid cells with suppressive activity were increased in the gut and blood circulation of LRRK2 G2019S compared with control rats in various acute and chronic inflammatory responses. In inflammatory conditions, Th17 cell activity was suppressed, but tissue-associated phylum Bacteroidetes was abnormally increased in the intestine of LRRK2 G2019S rats. The abnormally expanded myeloid cells because of the LRRK2 G2019S gene were highly suppressive on Th17 cell differentiation. Moreover, we found that inhibition of LRRK2 kinase affects myeloid progenitors and myeloid cell differentiation. Taken together, the results indicate that abnormal LRRK2 activity can alter bone marrow myelopoiesis, peripheral myeloid cell differentiation, and intestinal immune homeostasis. These findings may have ramifications in immune and inflammatory responses in patients with LRRK2 abnormalities.
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Affiliation(s)
- Jeongho Park
- Laboratory of Immunology and Hematopoiesis, Department of Comparative Pathobiology, Purdue University, West Lafayette, Indiana, USA
| | - Jang-Won Lee
- School of Health Sciences, Purdue University, West Lafayette, Indiana, USA
| | - Scott C Cooper
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Hal E Broxmeyer
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Jason R Cannon
- School of Health Sciences, Purdue University, West Lafayette, Indiana, USA.,Purdue Institute of Neuroscience, Purdue University, West Lafayette, Indiana, USA
| | - Chang H Kim
- Laboratory of Immunology and Hematopoiesis, Department of Comparative Pathobiology, Purdue University, West Lafayette, Indiana, USA; .,Department of Biological Sciences, Purdue University, West Lafayette, Indiana, USA.,Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, USA.,Purdue Center for Cancer Research, Purdue University, West Lafayette, Indiana, USA; and.,Purdue Institute of Inflammation, Immunology and Infectious Diseases, Purdue University, West Lafayette, Indiana, USA
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18
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Macrophages and Phospholipases at the Intersection between Inflammation and the Pathogenesis of HIV-1 Infection. Int J Mol Sci 2017; 18:ijms18071390. [PMID: 28661459 PMCID: PMC5535883 DOI: 10.3390/ijms18071390] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 06/22/2017] [Accepted: 06/26/2017] [Indexed: 12/12/2022] Open
Abstract
Persistent low grade immune activation and chronic inflammation are nowadays considered main driving forces of the progressive immunologic failure in effective antiretroviral therapy treated HIV-1 infected individuals. Among the factors contributing to this phenomenon, microbial translocation has emerged as a key driver of persistent immune activation. Indeed, the rapid depletion of gastrointestinal CD4+ T lymphocytes occurring during the early phases of infection leads to a deterioration of the gut epithelium followed by the translocation of microbial products into the systemic circulation and the subsequent activation of innate immunity. In this context, monocytes/macrophages are increasingly recognized as an important source of inflammation, linked to HIV-1 disease progression and to non-AIDS complications, such as cardiovascular disease and neurocognitive decline, which are currently main challenges in treated patients. Lipid signaling plays a central role in modulating monocyte/macrophage activation, immune functions and inflammatory responses. Phospholipase-mediated phospholipid hydrolysis leads to the production of lipid mediators or second messengers that affect signal transduction, thus regulating a variety of physiologic and pathophysiologic processes. In this review, we discuss the contribution of phospholipases to monocyte/macrophage activation in the context of HIV-1 infection, focusing on their involvement in virus-associated chronic inflammation and co-morbidities.
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19
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Wu SE, Miller WE. The HCMV US28 vGPCR induces potent Gαq/PLC-β signaling in monocytes leading to increased adhesion to endothelial cells. Virology 2016; 497:233-243. [PMID: 27497185 DOI: 10.1016/j.virol.2016.07.025] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 07/18/2016] [Accepted: 07/26/2016] [Indexed: 01/12/2023]
Abstract
US28 transcripts have been detected in primary monocytes and in THP-1 monocytes infected with HCMV but US28 protein expression has not yet been demonstrated in these cell types. Moreover, the mechanism(s) by which US28 signals and contributes to viral pathogenesis in monocytes remains unclear. Here, we show that US28 protein is robustly expressed in HCMV infected THP-1 monocytes and that US28 can trigger Gαq dependent signaling in THP-1 cells infected with HCMV and in THP-1 cells stably expressing US28. US28 signaling in these cells is dependent on G-protein coupling, but independent of chemokine binding. Importantly, we demonstrate that this US28 signaling is functionally important as it stimulates the adhesion of monocytes to an endothelial monolayer. Our studies, which demonstrate that US28-driven Gαq signaling has profound effects on monocyte biology, suggest that US28 driven phenotypic changes in HCMV infected monocytes may play important roles in HCMV dissemination and/or pathogenesis.
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Affiliation(s)
- Shu-En Wu
- Department of Molecular Genetics, Biochemistry, and Microbiology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0524, USA
| | - William E Miller
- Department of Molecular Genetics, Biochemistry, and Microbiology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0524, USA.
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20
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Fric J, Lim CXF, Mertes A, Lee BTK, Viganò E, Chen J, Zolezzi F, Poidinger M, Larbi A, Strobl H, Zelante T, Ricciardi-Castagnoli P. Calcium and calcineurin-NFAT signaling regulate granulocyte-monocyte progenitor cell cycle via Flt3-L. Stem Cells 2015; 32:3232-44. [PMID: 25100642 PMCID: PMC4282522 DOI: 10.1002/stem.1813] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 07/07/2014] [Indexed: 12/11/2022]
Abstract
Maintenance of myeloid progenitor cells is controlled by complex regulatory mechanisms and is orchestrated by multiple different transcription factors. Here, we report that the activation of the transcription factor nuclear factor of activated T cells (NFAT) by calcium-sensing protein calcineurin inhibits the proliferation of myeloid granulocyte–monocyte progenitors (GMPs). Myeloid progenitor subtypes exhibit variable sensitivity to induced Ca2+ entry and consequently display differential engagement of the calcineurin-NFAT pathway. This study shows that inhibition of the calcineurin-NFAT pathway enhances the proliferation of GMPs both in vitro and in vivo and demonstrates that calcineurin-NFAT signaling in GMPs is initiated by Flt3-L. Inhibition of the calcineurin-NFAT pathway modified expression of the cell cycle regulation genes Cdk4, Cdk6, and Cdkn1a (p21), thus enabling rapid cell cycle progression specifically in GMPs. NFAT inhibitor drugs are extensively used in the clinic to restrict the pathological activation of lymphoid cells, and our data reveal for the first time that these therapies also exert potent effects on maintenance of the myeloid cell compartment through specific regulation of GMP proliferation. Stem Cells2014;32:3232–3244
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Affiliation(s)
- Jan Fric
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore
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21
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Carras S, Valayer A, Moratal C, Weiss-Gayet M, Pages G, Morlé F, Mouchiroud G, Gobert S. Instructive role of M-CSF on commitment of bipotent myeloid cells involves ERK-dependent positive and negative signaling. J Leukoc Biol 2015; 99:311-9. [PMID: 26336156 DOI: 10.1189/jlb.2a1214-619r] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 08/17/2015] [Indexed: 12/20/2022] Open
Abstract
M-CSF and G-CSF are instructive cytokines that specifically induce differentiation of bipotent myeloid progenitors into macrophages and granulocytes, respectively. Through morphology and colony assay studies, flow cytometry analysis of specific markers, and expression of myeloid transcription factors, we show here that the Eger/Fms cell line is composed of cells whose differentiation fate is instructed by M-CSF and G-CSF, thus representing a good in vitro model of myeloid bipotent progenitors. Consistent with the essential role of ERK1/2 during macrophage differentiation and defects of macrophagic differentiation in native ERK1(-/-) progenitors, ERK signaling is strongly activated in Eger/Fms cells upon M-CSF-induced macrophagic differentiation but only to a very small extent during G-CSF-induced granulocytic differentiation. Previous in vivo studies indicated a key role of Fli-1 in myeloid differentiation and demonstrated its weak expression during macrophagic differentiation with a strong expression during granulocytic differentiation. Here, we demonstrated that this effect could be mediated by a differential regulation of protein kinase Cδ (PKCd) on Fli-1 expression in response to M-CSF and G-CSF. With the use of knockdown of PKCd by small interfering RNA, we demonstrated that M-CSF activates PKCd, which in turn, inhibits Fli-1 expression and granulocytic differentiation. Finally, we studied the connection between ERK and PKCd and showed that in the presence of the MEK inhibitor U0126, PKCd expression is decreased, and Fli-1 expression is increased in response to M-CSF. Altogether, we demonstrated that in bipotent myeloid cells, M-CSF promotes macrophagic over granulocytic differentiation by inducing ERK activation but also PKCd expression, which in turn, down-regulates Fli-1 expression and prevents granulocytic differentiation.
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Affiliation(s)
- Sylvain Carras
- Centre de Génétique et de Physiologie Moléculaire et Cellulaire, Centre National de la Recherche Scientifique, Unités Mixtes de Recherche 5534, Université de Lyon, Villeurbanne Cedex, France
| | - Alexandre Valayer
- Centre de Génétique et de Physiologie Moléculaire et Cellulaire, Centre National de la Recherche Scientifique, Unités Mixtes de Recherche 5534, Université de Lyon, Villeurbanne Cedex, France
| | - Claudine Moratal
- Centre de Génétique et de Physiologie Moléculaire et Cellulaire, Centre National de la Recherche Scientifique, Unités Mixtes de Recherche 5534, Université de Lyon, Villeurbanne Cedex, France
| | - Michèle Weiss-Gayet
- Centre de Génétique et de Physiologie Moléculaire et Cellulaire, Centre National de la Recherche Scientifique, Unités Mixtes de Recherche 5534, Université de Lyon, Villeurbanne Cedex, France
| | - Gilles Pages
- Centre de Génétique et de Physiologie Moléculaire et Cellulaire, Centre National de la Recherche Scientifique, Unités Mixtes de Recherche 5534, Université de Lyon, Villeurbanne Cedex, France
| | - François Morlé
- Centre de Génétique et de Physiologie Moléculaire et Cellulaire, Centre National de la Recherche Scientifique, Unités Mixtes de Recherche 5534, Université de Lyon, Villeurbanne Cedex, France
| | - Guy Mouchiroud
- Centre de Génétique et de Physiologie Moléculaire et Cellulaire, Centre National de la Recherche Scientifique, Unités Mixtes de Recherche 5534, Université de Lyon, Villeurbanne Cedex, France
| | - Stéphanie Gobert
- Centre de Génétique et de Physiologie Moléculaire et Cellulaire, Centre National de la Recherche Scientifique, Unités Mixtes de Recherche 5534, Université de Lyon, Villeurbanne Cedex, France
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