1
|
Yang R, Wang X, Liu H, Chen J, Tan C, Chen H, Wang X. Egr-1 is a key regulator of the blood-brain barrier damage induced by meningitic Escherichia coli. Cell Commun Signal 2024; 22:44. [PMID: 38233877 PMCID: PMC10795328 DOI: 10.1186/s12964-024-01488-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 01/11/2024] [Indexed: 01/19/2024] Open
Abstract
Bacterial meningitis remains a leading cause of infection-related mortality worldwide. Although Escherichia coli (E. coli) is the most common etiology of neonatal meningitis, the underlying mechanisms governing bacterial blood-brain barrier (BBB) disruption during infection remain elusive. We observed that infection of human brain microvascular endothelial cells with meningitic E. coli triggers the activation of early growth response 1 (Egr-1), a host transcriptional activator. Through integrated chromatin immunoprecipitation sequencing and transcriptome analysis, we identified Egr-1 as a crucial regulator for maintaining BBB integrity. Mechanistically, Egr-1 induced cytoskeletal changes and downregulated tight junction protein expression by directly targeting VEGFA, PDGFB, and ANGPTL4, resulting in increased BBB permeability. Meanwhile, Egr-1 also served as a master regulator in the initiation of neuroinflammatory response during meningitic E. coli infection. Our findings support an Egr-1-dependent mechanism of BBB disruption by meningitic E. coli, highlighting a promising therapeutic target for bacterial meningitis.
Collapse
Affiliation(s)
- Ruicheng Yang
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China
| | - Xinyi Wang
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China
| | - Hulin Liu
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China
| | - Jiaqi Chen
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China
| | - Chen Tan
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China
- Frontiers Science Center for Animal Breeding and Sustainable Production, Wuhan, 430070, China
- International Research Center for Animal Disease, Ministry of Science and Technology of the People's Republic of China, Wuhan, 430070, China
| | - Huanchun Chen
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China
- Frontiers Science Center for Animal Breeding and Sustainable Production, Wuhan, 430070, China
- International Research Center for Animal Disease, Ministry of Science and Technology of the People's Republic of China, Wuhan, 430070, China
| | - Xiangru Wang
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China.
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China.
- Frontiers Science Center for Animal Breeding and Sustainable Production, Wuhan, 430070, China.
- International Research Center for Animal Disease, Ministry of Science and Technology of the People's Republic of China, Wuhan, 430070, China.
| |
Collapse
|
2
|
Zhang Y, Yao C, Ju Z, Jiao D, Hu D, Qi L, Liu S, Wu X, Zhao C. Krüppel-like factors in tumors: Key regulators and therapeutic avenues. Front Oncol 2023; 13:1080720. [PMID: 36761967 PMCID: PMC9905823 DOI: 10.3389/fonc.2023.1080720] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 01/09/2023] [Indexed: 01/26/2023] Open
Abstract
Krüppel-like factors (KLFs) are a group of DNA-binding transcriptional regulators with multiple essential functions in various cellular processes, including proliferation, migration, inflammation, and angiogenesis. The aberrant expression of KLFs is often found in tumor tissues and is essential for tumor development. At the molecular level, KLFs regulate multiple signaling pathways and mediate crosstalk among them. Some KLFs may also be molecular switches for specific biological signals, driving their transition from tumor suppressors to promoters. At the histological level, the abnormal expression of KLFs is closely associated with tumor cell stemness, proliferation, apoptosis, and alterations in the tumor microenvironment. Notably, the role of each KLF in tumors varies according to tumor type and different stages of tumor development rather than being invariant. In this review, we focus on the advances in the molecular biology of KLFs, particularly the regulations of several classical signaling pathways by these factors, and the critical role of KLFs in tumor development. We also highlight their strong potential as molecular targets in tumor therapy and suggest potential directions for clinical translational research.
Collapse
Affiliation(s)
- Yuchen Zhang
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Chongjie Yao
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ziyong Ju
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Danli Jiao
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Dan Hu
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Li Qi
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Shimin Liu
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Shanghai Research Institute of Acupuncture and Meridian, Shanghai, China
| | - Xueqing Wu
- Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China,*Correspondence: Chen Zhao, ; Xueqing Wu,
| | - Chen Zhao
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China,*Correspondence: Chen Zhao, ; Xueqing Wu,
| |
Collapse
|
3
|
Qi F, Wang X, Zhao S, Wang C, Sun R, Wang H, Du P, Wang J, Wang X, Jiang G. miR‑let‑7c‑3p targeting on Egr‑1 contributes to the committed differentiation of leukemia cells into monocyte/macrophages. Oncol Lett 2022; 24:273. [PMID: 35782903 PMCID: PMC9247672 DOI: 10.3892/ol.2022.13393] [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: 02/05/2022] [Accepted: 05/19/2022] [Indexed: 11/06/2022] Open
Abstract
In preliminary experiments, it was found that the expression of early growth response-1 (Egr-1) was upregulated during the committed differentiation of leukemia cells into monocytes/macrophages. The cross-analysis of gene chip detection and database prediction indicated that Egr-1 was associated with upstream microRNA (miR)-let-7c-3p, thus the present study focused on the role of the miR-let-7c-3p/Egr-1 signaling axis in the committed differentiation of leukemia cells into monocytes/macrophages. Phorbol 12-myristate 13-acetate (PMA) was used to induce the directed differentiation of human K562 leukemia cells into monocytes/macrophages and the differentiation of K562 leukemia cells was determined by cell morphology observation and expression of differentiation antigens CD11b and CD14 by flow cytometry. The expression levels of Egr-1 and miR-let-7c-3p were detected by reverse transcription-quantitative PCR and the protein expression of Egr-1 was detected by western blotting. The effect of Egr-1 on the differentiation of K562 cells was detected by short interfering (si)RNA interference assay. A dual-luciferase reporter assay was used to detect target binding of miR-let-7c-3p on the 3′UTR of Egr-1. Cell transfection of miR-let-7c-3p mimics and inhibitors was used to modulate the expression of miR-let-7c-3p, as indicated by RT-qPCR assays. Western blotting was also used to examine the effect of miR-let-7c-3p on Egr-1 expression. The PMA-induced differentiation of K562 cells was transfected with miR-let-7c-3p and the expression of differentiation antigen was detected by flow cytometry. A differentiation model of K562 leukemia cells into monocytes/macrophages was induced by PMA, which was indicated by morphological observations and upregulation of CD11b and CD14 antigens. The gene or protein expression of Egr-1 was significantly higher compared with that of the control group, while the expression of miR-let-7c-3p was significantly lower compared with that of the control group. siRNA interference experiments showed that the expression of cell differentiation antigen CD14 in the 100 µg/ml PMA + si-Egr-1 group was significantly lower compared with that in the 100 µg/ml PMA + si-ctrl group. The dual luciferase reporter gene results showed that the luciferase activity of the co-transfected mimic and Egr-1 WT groups was significantly lower than that of the NC control group, while the luciferase activity of the co-transfected mimic and Egr-1 MUT groups was comparable to that of the NC control group. Therefore, the dual-luciferase reporter gene assay confirmed that miR-let-7c-3p can target Egr-1. Western blotting showed that the expression of Egr-1 following transfection with miR-let-7c-3p inhibitor was significantly higher compared with that of the negative control and the expression of Egr-1 after transfection with miR-let-7c-3p mimic was significantly lower than that of the negative control. Following exposure to PMA, the expressions of CD11b and CD14 in the miR-let-7c-3p inhibitor group were significantly higher than those in the miR-let-7c-3p NC group, as indicated by CD11b and CD14 respectively. In conclusion, miR-let-7c-3p could bind to the 3′UTR of Egr-1 and negatively regulated Egr-1 expression. The miR-let-7c-3p/Egr-1 signaling axis was closely associated with the committed differentiation of K562 cells from leukemia cells to monocytes/macrophages.
Collapse
Affiliation(s)
- Fu Qi
- Department of Immunology, Binzhou Medical University, Yantai, Shandong 264000, P.R. China
| | - Xinping Wang
- Department of Laboratory Medicine, Yantai Hospital of Traditional Chinese Medicine, Yantai, Shandong 264000, P.R. China
| | - Shouzhen Zhao
- School of Life Science and Technology, Weifang Medical University, Weifang, Shandong 261053, P.R. China
| | - Chaozhe Wang
- Department of Immunology, Binzhou Medical University, Yantai, Shandong 264000, P.R. China
| | - Ruijing Sun
- Department of Immunology, Binzhou Medical University, Yantai, Shandong 264000, P.R. China
| | - Huan Wang
- School of Life Science and Technology, Weifang Medical University, Weifang, Shandong 261053, P.R. China
| | - Pengchao Du
- Department of Immunology, Binzhou Medical University, Yantai, Shandong 264000, P.R. China
| | - Jing Wang
- Department of Cellular Immunology, Shandong Yinfeng Academy of Life Science, Jinan, Shandong 250109, P.R. China
| | - Xidi Wang
- Laboratory of Precision Medicine, Zhangqiu District People's Hospital of Jinan Affiliated to Jining Medical University, Jinan, Shandong 250200, P.R. China
| | - Guosheng Jiang
- Department of Immunology, Binzhou Medical University, Yantai, Shandong 264000, P.R. China
| |
Collapse
|
4
|
Rosales M, Rodríguez-Ulloa A, Pérez GV, Besada V, Soto T, Ramos Y, González LJ, Zettl K, Wiśniewski JR, Yang K, Perera Y, Perea SE. CIGB-300-Regulated Proteome Reveals Common and Tailored Response Patterns of AML Cells to CK2 Inhibition. Front Mol Biosci 2022; 9:834814. [PMID: 35359604 PMCID: PMC8962202 DOI: 10.3389/fmolb.2022.834814] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 02/01/2022] [Indexed: 01/13/2023] Open
Abstract
Protein kinase CK2 is a highly pleiotropic and ubiquitously expressed Ser/Thr kinase with instrumental roles in normal and pathological states, including neoplastic phenotype in solid tumor and hematological malignancies. In line with previous reports, CK2 has been suggested as an attractive prognostic marker and molecular target in acute myeloid leukemia (AML), a blood malignant disorder that remains as an unmet medical need. Accordingly, this work investigates the complex landscape of molecular and cellular perturbations supporting the antileukemic effect exerted by CK2 inhibition in AML cells. To identify and functionally characterize the proteomic profile differentially modulated by the CK2 peptide-based inhibitor CIGB-300, we carried out LC-MS/MS and bioinformatic analysis in human cell lines representing two differentiation stages and major AML subtypes. Using this approach, 109 and 129 proteins were identified as significantly modulated in HL-60 and OCI-AML3 cells, respectively. In both proteomic profiles, proteins related to apoptotic cell death, cell cycle progression, and transcriptional/translational processes appeared represented, in agreement with previous results showing the impact of CIGB-300 in AML cell proliferation and viability. Of note, a group of proteins involved in intracellular redox homeostasis was specifically identified in HL-60 cell-regulated proteome, and flow cytometric analysis also confirmed a differential effect of CIGB-300 over reactive oxygen species (ROS) production in AML cells. Thus, oxidative stress might play a relevant role on CIGB-300-induced apoptosis in HL-60 but not in OCI-AML3 cells. Importantly, these findings provide first-hand insights concerning the CIGB-300 antileukemic effect and draw attention to the existence of both common and tailored response patterns triggered by CK2 inhibition in different AML backgrounds, a phenomenon of particular relevance with regard to the pharmacologic blockade of CK2 and personalized medicine.
Collapse
Affiliation(s)
- Mauro Rosales
- Department of Animal and Human Biology, Faculty of Biology, University of Havana (UH), Havana, Cuba
- Molecular Oncology Group, Department of Pharmaceuticals, Biomedical Research Division, Center for Genetic Engineering and Biotechnology (CIGB), Havana, Cuba
| | - Arielis Rodríguez-Ulloa
- Mass Spectrometry Laboratory, Proteomics Group, Department of System Biology, Biomedical Research Division, CIGB, Havana, Cuba
| | - George V. Pérez
- Molecular Oncology Group, Department of Pharmaceuticals, Biomedical Research Division, Center for Genetic Engineering and Biotechnology (CIGB), Havana, Cuba
| | - Vladimir Besada
- Mass Spectrometry Laboratory, Proteomics Group, Department of System Biology, Biomedical Research Division, CIGB, Havana, Cuba
| | - Thalia Soto
- Department of Animal and Human Biology, Faculty of Biology, University of Havana (UH), Havana, Cuba
- Molecular Oncology Group, Department of Pharmaceuticals, Biomedical Research Division, Center for Genetic Engineering and Biotechnology (CIGB), Havana, Cuba
| | - Yassel Ramos
- Mass Spectrometry Laboratory, Proteomics Group, Department of System Biology, Biomedical Research Division, CIGB, Havana, Cuba
| | - Luis J. González
- Mass Spectrometry Laboratory, Proteomics Group, Department of System Biology, Biomedical Research Division, CIGB, Havana, Cuba
| | - Katharina Zettl
- Biochemical Proteomics Group, Department of Proteomics and Signal Transduction, Max-Planck Institute of Biochemistry, Munich, Germany
| | - Jacek R. Wiśniewski
- Biochemical Proteomics Group, Department of Proteomics and Signal Transduction, Max-Planck Institute of Biochemistry, Munich, Germany
| | - Ke Yang
- China-Cuba Biotechnology Joint Innovation Center (CCBJIC), Yongzhou Zhong Gu Biotechnology Co., Ltd., Yongzhou, China
- *Correspondence: Ke Yang, ; Yasser Perera, ; Silvio E. Perea,
| | - Yasser Perera
- Molecular Oncology Group, Department of Pharmaceuticals, Biomedical Research Division, Center for Genetic Engineering and Biotechnology (CIGB), Havana, Cuba
- China-Cuba Biotechnology Joint Innovation Center (CCBJIC), Yongzhou Zhong Gu Biotechnology Co., Ltd., Yongzhou, China
- *Correspondence: Ke Yang, ; Yasser Perera, ; Silvio E. Perea,
| | - Silvio E. Perea
- Molecular Oncology Group, Department of Pharmaceuticals, Biomedical Research Division, Center for Genetic Engineering and Biotechnology (CIGB), Havana, Cuba
- *Correspondence: Ke Yang, ; Yasser Perera, ; Silvio E. Perea,
| |
Collapse
|
5
|
Kimpara S, Lu L, Hoang NM, Zhu F, Bates PD, Daenthanasanmak A, Zhang S, Yang DT, Kelm A, Liu Y, Li Y, Rosiejka A, Kondapelli A, Bebel S, Chen M, Waldmann TA, Capitini CM, Rui L. EGR1 Addiction in Diffuse Large B-cell Lymphoma. Mol Cancer Res 2021; 19:1258-1269. [PMID: 33980611 DOI: 10.1158/1541-7786.mcr-21-0267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 04/27/2021] [Accepted: 04/30/2021] [Indexed: 11/16/2022]
Abstract
Early growth response gene (EGR1) is a transcription factor known to be a downstream effector of B-cell receptor signaling and Janus kinase 1 (JAK1) signaling in diffuse large B-cell lymphoma (DLBCL). While EGR1 is characterized as a tumor suppressor in leukemia and multiple myeloma, the role of EGR1 in lymphoma is unknown. Here we demonstrate that EGR1 is a potential oncogene that promotes cell proliferation in DLBCL. IHC analysis revealed that EGR1 expression is elevated in DLBCL compared with normal lymphoid tissues and the level of EGR1 expression is higher in activated B cell-like subtype (ABC) than germinal center B cell-like subtype (GCB). EGR1 expression is required for the survival and proliferation of DLBCL cells. Genomic analyses demonstrated that EGR1 upregulates expression of MYC and E2F pathway genes through the CBP/p300/H3K27ac/BRD4 axis while repressing expression of the type I IFN pathway genes by interaction with the corepressor NAB2. Genetic and pharmacologic inhibition of EGR1 synergizes with the BRD4 inhibitor JQ1 or the type I IFN inducer lenalidomide in growth inhibition of ABC DLBCL both in cell cultures and xenograft mouse models. Therefore, targeting oncogenic EGR1 signaling represents a potential new targeted therapeutic strategy in DLBCL, especially for the more aggressive ABC DLBCL. IMPLICATIONS: The study characterizes EGR1 as a potential oncogene that promotes cell proliferation and defines EGR1 as a new molecular target in DLBCL, the most common non-Hodgkin lymphoma.
Collapse
Affiliation(s)
- Shuichi Kimpara
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.,Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Li Lu
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.,Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Nguyet M Hoang
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.,Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Fen Zhu
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.,Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Paul D Bates
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | | | - Shanxiang Zhang
- Department of Pathology and Laboratory Medicine, Indiana University, Indianapolis, Indiana
| | - David T Yang
- Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.,Department of Pathology and Laboratory Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Amanda Kelm
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.,Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Yunxia Liu
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.,Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Yangguang Li
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.,Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Alexander Rosiejka
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.,Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Apoorv Kondapelli
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.,Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Samantha Bebel
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.,Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Madelyn Chen
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.,Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Thomas A Waldmann
- Lymphoid Malignancies Branch, Center for Cancer Research, NCI, NIH, Bethesda, Maryland
| | - Christian M Capitini
- Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin. .,Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Lixin Rui
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin. .,Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| |
Collapse
|
6
|
Enciso J, Mendoza L, Álvarez-Buylla ER, Pelayo R. Dynamical modeling predicts an inflammation-inducible CXCR7+ B cell precursor with potential implications in lymphoid blockage pathologies. PeerJ 2020; 8:e9902. [PMID: 33062419 PMCID: PMC7531334 DOI: 10.7717/peerj.9902] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 08/18/2020] [Indexed: 12/16/2022] Open
Abstract
Background The blockage at the early B lymphoid cell development pathway within the bone marrow is tightly associated with hematopoietic and immune diseases, where the disruption of basal regulatory networks prevents the continuous replenishment of functional B cells. Dynamic computational models may be instrumental for the comprehensive understanding of mechanisms underlying complex differentiation processes and provide novel prediction/intervention platforms to reinvigorate the system. Methods By reconstructing a three-module regulatory network including genetic transcription, intracellular transduction, and microenvironment communication, we have investigated the early B lineage cell fate decisions in normal and pathological settings. The early B cell differentiation network was simulated as a Boolean model and then transformed, using fuzzy logic, to a continuous model. We tested null and overexpression mutants to analyze the emergent behavior of the network. Due to its importance in inflammation, we investigated the effect of NFkB induction at different early B cell differentiation stages. Results While the exhaustive synchronous and asynchronous simulation of the early B cell regulatory network (eBCRN) reproduced the configurations of the hematopoietic progenitors and early B lymphoid precursors of the pathway, its simulation as a continuous model with fuzzy logics suggested a transient IL-7R+ ProB-to-Pre-B subset expressing pre-BCR and a series of dominant B-cell transcriptional factors. This conspicuous differentiating cell population up-regulated CXCR7 and reduced CXCR4 and FoxO1 expression levels. Strikingly, constant but intermediate NFkB signaling at specific B cell differentiation stages allowed stabilization of an aberrant CXCR7+ pre-B like phenotype with apparent affinity to proliferative signals, while under constitutive overactivation of NFkB, such cell phenotype was aberrantly exacerbated from the earliest stage of common lymphoid progenitors. Our mutant models revealed an abnormal delay in the BCR assembly upon NFkB activation, concomitant to sustained Flt3 signaling, down-regulation of Ebf1, Irf4 and Pax5 genes transcription, and reduced Ig recombination, pointing to a potential lineage commitment blockage. Discussion For the first time, an inducible CXCR7hi B cell precursor endowed with the potential capability of shifting central lymphoid niches, is inferred by computational modeling. Its phenotype is compatible with that of leukemia-initiating cells and might be the foundation that bridges inflammation with blockage-related malignancies and a wide range of immunological diseases. Besides the predicted differentiation impairment, inflammation-inducible phenotypes open the possibility of newly formed niches colonized by the reported precursor. Thus, emergent bone marrow ecosystems are predicted following a pro-inflammatory induction, that may lead to hematopoietic instability associated to blockage pathologies.
Collapse
Affiliation(s)
- Jennifer Enciso
- Centro de Investigación Biomédica de Oriente, Delegación Puebla, Instituto Mexicano del Seguro Social, Metepec, Puebla, Mexico.,Centro de Ciencias de la Complejidad, Universidad Nacional Autónoma de México, Mexico City, México.,Programa de Doctorado en Ciencias Bioquímicas, Universidad Nacional Autónoma de México, Mexico City, México
| | - Luis Mendoza
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, México
| | | | - Rosana Pelayo
- Centro de Investigación Biomédica de Oriente, Delegación Puebla, Instituto Mexicano del Seguro Social, Metepec, Puebla, Mexico
| |
Collapse
|
7
|
Abstract
Ca2+ is a ubiquitous and dynamic second messenger molecule that is induced by many factors including receptor activation, environmental factors, and voltage, leading to pleiotropic effects on cell function including changes in migration, metabolism and transcription. As such, it is not surprising that aberrant regulation of Ca2+ signals can lead to pathological phenotypes, including cancer progression. However, given the highly context-specific nature of Ca2+-dependent changes in cell function, delineation of its role in cancer has been a challenge. Herein, we discuss the distinct roles of Ca2+ signaling within and between each type of cancer, including consideration of the potential of therapeutic strategies targeting these signaling pathways.
Collapse
Affiliation(s)
- Scott Gross
- Fels Institute for Cancer Research and Molecular Biology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Pranava Mallu
- Fels Institute for Cancer Research and Molecular Biology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Hinal Joshi
- Fels Institute for Cancer Research and Molecular Biology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Bryant Schultz
- Fels Institute for Cancer Research and Molecular Biology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Christina Go
- Fels Institute for Cancer Research and Molecular Biology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Jonathan Soboloff
- Fels Institute for Cancer Research and Molecular Biology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States; Department of Medical Genetics & Molecular Biochemistry, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States.
| |
Collapse
|
8
|
Erbe R, Kessler MD, Favorov AV, Easwaran H, Gaykalova D, Fertig EJ. Matrix factorization and transfer learning uncover regulatory biology across multiple single-cell ATAC-seq data sets. Nucleic Acids Res 2020; 48:e68. [PMID: 32392348 PMCID: PMC7337516 DOI: 10.1093/nar/gkaa349] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/20/2020] [Accepted: 04/25/2020] [Indexed: 02/07/2023] Open
Abstract
While the methods available for single-cell ATAC-seq analysis are well optimized for clustering cell types, the question of how to integrate multiple scATAC-seq data sets and/or sequencing modalities is still open. We present an analysis framework that enables such integration across scATAC-seq data sets by applying the CoGAPS Matrix Factorization algorithm and the projectR transfer learning program to identify common regulatory patterns across scATAC-seq data sets. We additionally integrate our analysis with scRNA-seq data to identify orthogonal evidence for transcriptional regulators predicted by scATAC-seq analysis. Using publicly available scATAC-seq data, we find patterns that accurately characterize cell types both within and across data sets. Furthermore, we demonstrate that these patterns are both consistent with current biological understanding and reflective of novel regulatory biology.
Collapse
Affiliation(s)
- Rossin Erbe
- Johns Hopkins University, Baltimore, MD, USA
| | | | - Alexander V Favorov
- Johns Hopkins University, Baltimore, MD, USA
- Vavilov Institute of General Genetics, Moscow, Russia
| | | | | | | |
Collapse
|
9
|
Yen JH, Lin CY, Chuang CH, Chin HK, Wu MJ, Chen PY. Nobiletin Promotes Megakaryocytic Differentiation through the MAPK/ERK-Dependent EGR1 Expression and Exerts Anti-Leukemic Effects in Human Chronic Myeloid Leukemia (CML) K562 Cells. Cells 2020; 9:cells9040877. [PMID: 32260160 PMCID: PMC7226785 DOI: 10.3390/cells9040877] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 03/27/2020] [Accepted: 04/01/2020] [Indexed: 11/25/2022] Open
Abstract
Differentiation therapy is an alternative strategy used to induce the differentiation of blast cells toward mature cells and to inhibit tumor cell proliferation for cancer treatment. Nobiletin (NOB), a polymethoxyflavone phytochemical, is present abundantly in citrus peels and has been reported to possess anti-cancer activity. In this study, we investigated the anti-leukemic effects of NOB on cell differentiation and its underlying mechanisms in human chronic myeloid leukemia (CML) K562 cells. NOB (100 μM) treatment for 24 and 48 h significantly decreased viability of K562 cells to 54.4 ± 5.3% and 46.2 ± 9.9%, respectively. NOB (10–100 μM) significantly inhibited cell growth in K562 cells. Flow cytometry analysis and immunoblotting data showed that NOB (40 and 80 μM) could modulate the cell cycle regulators including p21, p27, and cyclin D2, and induce G1 phase arrest. NOB also increased the messenger RNA (mRNA) and protein expression of megakaryocytic differentiation markers, such as CD61, CD41, and CD42 as well as the formation of large cells with multi-lobulated nuclei in K562 cells. These results suggested that NOB facilitated K562 cells toward megakaryocytic differentiation. Furthermore, microarray analysis showed that expression of EGR1, a gene associated with promotion of megakaryocytic differentiation, was markedly elevated in NOB-treated K562 cells. The knockdown of EGR1 expression by small interference RNA (siRNA) could significantly attenuate NOB-mediated cell differentiation. We further elucidated that NOB induced EGR1 expression and CD61 expression through increases in MAPK/ERK phosphorylation in K562 cells. These results indicate that NOB promotes megakaryocytic differentiation through the MAPK/ERK pathway-dependent EGR1 expression in human CML cells. In addition, NOB when combined with imatinib could synergistically reduce the viability of K562 cells. Our findings suggest that NOB may serve as a beneficial anti-leukemic agent for differentiation therapy.
Collapse
MESH Headings
- Apoptosis/drug effects
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Cell Cycle/drug effects
- Cell Differentiation/drug effects
- Cell Nucleus/drug effects
- Cell Nucleus/metabolism
- Cell Proliferation/drug effects
- Early Growth Response Protein 1/metabolism
- Flavones/chemistry
- Flavones/pharmacology
- Gene Expression Regulation, Leukemic/drug effects
- Gene Ontology
- Humans
- Imatinib Mesylate/pharmacology
- K562 Cells
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/enzymology
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- MAP Kinase Signaling System/drug effects
- Megakaryocytes/drug effects
- Megakaryocytes/pathology
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Up-Regulation/drug effects
- Up-Regulation/genetics
Collapse
Affiliation(s)
- Jui-Hung Yen
- Department of Molecular Biology and Human Genetics, Tzu Chi University, Hualien 97004, Taiwan; (J.-H.Y.); (C.-Y.L.); (C.-H.C.)
| | - Ching-Yen Lin
- Department of Molecular Biology and Human Genetics, Tzu Chi University, Hualien 97004, Taiwan; (J.-H.Y.); (C.-Y.L.); (C.-H.C.)
| | - Chin-Hsien Chuang
- Department of Molecular Biology and Human Genetics, Tzu Chi University, Hualien 97004, Taiwan; (J.-H.Y.); (C.-Y.L.); (C.-H.C.)
| | - Hsien-Kuo Chin
- Division of Cardiovascular, Department of Surgery, Kaohsiung Armed Forces General Hospital, Kaohsiung 80284, Taiwan;
| | - Ming-Jiuan Wu
- Department of Biotechnology, Chia Nan University of Pharmacy and Science, Tainan 71710, Taiwan;
| | - Pei-Yi Chen
- Center of Medical Genetics, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien 97004, Taiwan
- Correspondence: or ; Tel.: +886-3-856-3092
| |
Collapse
|
10
|
Ying Z, Shiue L, Park K, Kollet J, Bijani P, Goswami M, Duvic M, Ni X. Blood transcriptional profiling reveals IL-1 and integrin signaling pathways associated with clinical response to extracorporeal photopheresis in patients with leukemic cutaneous T-cell lymphoma. Oncotarget 2019; 10:3183-3197. [PMID: 31139332 PMCID: PMC6516711 DOI: 10.18632/oncotarget.26900] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 04/14/2019] [Indexed: 01/07/2023] Open
Abstract
Extracorporeal photopheresis (ECP) is a frontline therapy for patients with leukemic cutaneous T-cell lymphoma (L-CTCL), but its mechanisms of action are not fully understood. This study was to explore the molecular mechanisms underlying clinical response versus non-response in patients with L-CTCL. We performed blood transcriptional profiling of ten L-CTCL patients at Day 2 and 1 month post- ECP compared to pre-ECP baseline using Agilent Whole Human Genome Microarray technology. Differentially expressed genes (DEGs) between five clinically-responsive patients and five clinically-resistant patients were cross-compared. Higher numbers of genes were modulated in responders than non-responders after ECP at both Day 2 and 1 month, with two thirds of DEGs down-regulated. The down-regulated DEGs at 1 month post-ECP were related to inflammatory, immune and/or stress responses, platelet functions, and chromatin remodeling. Upregulated DEGs were mainly related to functions of the nucleolus. Pathway analysis revealed that integrin and IL-1 signaling pathways were the top pathways affected in responders, which were minimally affected in non-responders. The top upstream transcription regulators affected were IL1B, EGR1, FAS, and TGFB1. Our results suggest that the modulation of cell adhesion and suppression of IL-1β induced inflammation may underlie the efficacy of ECP in L-CTCL.
Collapse
Affiliation(s)
- Zuolin Ying
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Lisa Shiue
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Katherine Park
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jutta Kollet
- Bioinformatics, Miltenyi Biotec GmbH, Beigisch Gladbach, 51429, Germany
| | - Pedram Bijani
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Meghali Goswami
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Madeleine Duvic
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Xiao Ni
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| |
Collapse
|
11
|
Shi B, Tu H, Sha L, Luo X, Wu W, Su Y, Yang S, Wang H. Upregulation of long noncoding RNA TUG1 by EGR1 promotes adenomyotic epithelial cell migration and invasion through recruiting EZH2 and suppressing TIMP2. Mol Reprod Dev 2019; 86:239-247. [PMID: 30593723 DOI: 10.1002/mrd.23099] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 12/06/2018] [Indexed: 12/22/2022]
Abstract
Emerging studies showed that lncRNA taurine upregulated 1 (TUG1) plays important roles in diverse biological processes. However, there is no previously published research reporting the regulatory role of lncRNAs in the progression of adenomyosis. In the present study, we found that TUG1 is upregulated in human adenomyosis, and the overexpression of TUG1 is associated with the transcription factor early growth response 1 (EGR1). Functionally, the knockdown of TUG1 inhibited adenomyotic epithelial cell migration and invasion but not growth. The mechanistic experiments demonstrated that the function of TUG1 in adenomyotic epithelial cell invasion is, at least in part, through recruiting the enhancer of zeste homolog 2 (EZH2) to the promoter of tissue inhibitor of metalloproteinases 2 (TIMP2) and negatively regulating its expression. Our study demonstrated that TUG1 promotes the migration and invasion of human adenomyotic epithelial cells, and EGR1/TUG1/EZH2/TIMP2 may be a potential therapeutic target for adenomyosis.
Collapse
Affiliation(s)
- Beibei Shi
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Hongxiang Tu
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Lixiao Sha
- Department of Obstetrics and Gynecology, Wenzhou People's Hospital, Wenzhou, China
| | - Xishao Luo
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Wenlie Wu
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ying Su
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Simeng Yang
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Hanchu Wang
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| |
Collapse
|
12
|
Xu F, Cao J, Luo M, Che L, Li W, Ying S, Chen Z, Shen H. Early growth response gene 1 is essential for urban particulate matter-induced inflammation and mucus hyperproduction in airway epithelium. Toxicol Lett 2018; 294:145-155. [DOI: 10.1016/j.toxlet.2018.05.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 03/26/2018] [Accepted: 05/07/2018] [Indexed: 11/25/2022]
|
13
|
Duggimpudi S, Kloetgen A, Maney SK, Münch PC, Hezaveh K, Shaykhalishahi H, Hoyer W, McHardy AC, Lang PA, Borkhardt A, Hoell JI. Transcriptome-wide analysis uncovers the targets of the RNA-binding protein MSI2 and effects of MSI2's RNA-binding activity on IL-6 signaling. J Biol Chem 2018; 293:15359-15369. [PMID: 30126842 DOI: 10.1074/jbc.ra118.002243] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 07/23/2018] [Indexed: 12/14/2022] Open
Abstract
The RNA-binding protein Musashi 2 (MSI2) has emerged as an important regulator in cancer initiation, progression, and drug resistance. Translocations and deregulation of the MSI2 gene are diagnostic of certain cancers, including chronic myeloid leukemia (CML) with translocation t(7;17), acute myeloid leukemia (AML) with translocation t(10;17), and some cases of B-precursor acute lymphoblastic leukemia (pB-ALL). To better understand the function of MSI2 in leukemia, the mRNA targets that are bound and regulated by MSI2 and their MSI2-binding motifs need to be identified. To this end, using photoactivatable ribonucleoside cross-linking and immunoprecipitation (PAR-CLIP) and the multiple EM for motif elicitation (MEME) analysis tool, here we identified MSI2's mRNA targets and the consensus RNA-recognition element (RRE) motif recognized by MSI2 (UUAG). Of note, MSI2 knockdown altered the expression of several genes with roles in eukaryotic initiation factor 2 (eIF2), hepatocyte growth factor (HGF), and epidermal growth factor (EGF) signaling pathways. We also show that MSI2 regulates classic interleukin-6 (IL-6) signaling by promoting the degradation of the mRNA of IL-6 signal transducer (IL6ST or GP130), which, in turn, affected the phosphorylation statuses of signal transducer and activator of transcription 3 (STAT3) and the mitogen-activated protein kinase ERK. In summary, we have identified multiple MSI2-regulated mRNAs and provided evidence that MSI2 controls IL6ST activity that control oncogenic signaling networks. Our findings may help inform strategies for unraveling the role of MSI2 in leukemia to pave the way for the development of targeted therapies.
Collapse
Affiliation(s)
- Sujitha Duggimpudi
- From the Department of Pediatric Oncology, Hematology and Clinical Immunology, Center for Child and Adolescent Health, Medical Faculty, Heinrich Heine University, Moorenstrasse 5, 40225 Düsseldorf, Germany
| | - Andreas Kloetgen
- From the Department of Pediatric Oncology, Hematology and Clinical Immunology, Center for Child and Adolescent Health, Medical Faculty, Heinrich Heine University, Moorenstrasse 5, 40225 Düsseldorf, Germany.,Department of Algorithmic Bioinformatics, Heinrich Heine University, Universitätsstrasse 1, 40225 Düsseldorf, Germany.,Computational Biology of Infection Research, Helmholtz Center for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany, and
| | - Sathish Kumar Maney
- Department of Molecular Medicine II, Heinrich Heine University, Universitätsstrasse 1, 40225, Düsseldorf, Germany
| | - Philipp C Münch
- Department of Algorithmic Bioinformatics, Heinrich Heine University, Universitätsstrasse 1, 40225 Düsseldorf, Germany.,Computational Biology of Infection Research, Helmholtz Center for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany, and
| | - Kebria Hezaveh
- From the Department of Pediatric Oncology, Hematology and Clinical Immunology, Center for Child and Adolescent Health, Medical Faculty, Heinrich Heine University, Moorenstrasse 5, 40225 Düsseldorf, Germany
| | - Hamed Shaykhalishahi
- Institute of Physical Biology, Heinrich Heine University, Universitätsstrasse 1, 40225 Düsseldorf, Germany
| | - Wolfgang Hoyer
- Institute of Physical Biology, Heinrich Heine University, Universitätsstrasse 1, 40225 Düsseldorf, Germany
| | - Alice C McHardy
- Department of Algorithmic Bioinformatics, Heinrich Heine University, Universitätsstrasse 1, 40225 Düsseldorf, Germany.,Computational Biology of Infection Research, Helmholtz Center for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany, and
| | - Philipp A Lang
- Department of Molecular Medicine II, Heinrich Heine University, Universitätsstrasse 1, 40225, Düsseldorf, Germany
| | - Arndt Borkhardt
- From the Department of Pediatric Oncology, Hematology and Clinical Immunology, Center for Child and Adolescent Health, Medical Faculty, Heinrich Heine University, Moorenstrasse 5, 40225 Düsseldorf, Germany
| | - Jessica I Hoell
- From the Department of Pediatric Oncology, Hematology and Clinical Immunology, Center for Child and Adolescent Health, Medical Faculty, Heinrich Heine University, Moorenstrasse 5, 40225 Düsseldorf, Germany,
| |
Collapse
|
14
|
Zhong JT, Wang HJ, Yu J, Zhang JH, Wang SF, Yang X, Su W. Correlations of the expressions of c-Jun and Egr-1 proteins with clinicopathological features and prognosis of patients with nasopharyngeal carcinoma. Cancer Biomark 2018; 19:213-220. [PMID: 28269757 DOI: 10.3233/cbm-161710] [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: 12/15/2022]
Abstract
This study intended to explore the correlation of the expressions of c-Jun and Egr-1 proteins with clinicopathological features and prognosis of patients with nasopharyngeal carcinoma (NPC). From January 2008 to January 2011, 123 NPC patients and 59 patients with chronic rhinitis were enrolled in this study. Fresh NPC and normal nasopharynx tissue specimens were obtained during surgery. Immunohistochemistry (IHC) was adopted to determine the positive expressions of the c-Jun and Egr-1 proteins. A 5-year clinical follow-up was conducted on all NPC patients. The Kaplan-Meier survival curve and Cox regression model were used for survival analysis. Compared with normal nasopharynx tissues, c-Jun expression was up-regulated but Egr-1 expression was down-regulated in NPC tissues. NPC patients with stage T3-T4 or stage III-IV had higher positive rates of c-Jun expression than those with stage T1-T2 or stage I-II. However, the positive rates of Egr-1 expression was higher in patients with stage T1-T2 or stage III-IV than those with stage T3-T4 or stage I-II. The survival rate of NPC patients with high c-Jun expression was lower than those with low/negative c-Jun expression, while the survival rate of NPC patients with high Egr-1 expression was higher than those with low/negative Egr-1 expression. The Cox regression analysis revealed that stage T3-T4, high c-Jun expression, and low Egr-1 expression were risk factors for poor prognosis of NPC patients. In conclusion, our study suggests that the c-Jun and Egr-1 proteins can serve as novel potential biomarkers for the early diagnosis and prognosis prediction of NPC.
Collapse
Affiliation(s)
- Jia-Teng Zhong
- Department of Pathology, Xinxiang Medical University, Xinxiang, Henan 453003, China
| | - Hai-Jun Wang
- Department of Pathology, Xinxiang Medical University, Xinxiang, Henan 453003, China
| | - Jian Yu
- Department of Pathology, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan 453100, China
| | - Jing-Hang Zhang
- Department of Pathology, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan 453100, China
| | - Shi-Feng Wang
- Pediatric Rescue Room, Linyi People's Hospital, Linyi, Shandong 276003, China
| | - Xue Yang
- Pediatric Rescue Room, Linyi People's Hospital, Linyi, Shandong 276003, China
| | - Wei Su
- Department of Pathology, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan 453100, China.,Clinical Molecular Pathology Diagnosis Center, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan 453100, China
| |
Collapse
|
15
|
Chen DG, Zhu B, Lv SQ, Zhu H, Tang J, Huang C, Li Q, Zhou P, Wang DL, Li GH. Inhibition of EGR1 inhibits glioma proliferation by targeting CCND1 promoter. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2017; 36:186. [PMID: 29246166 PMCID: PMC5732438 DOI: 10.1186/s13046-017-0656-4] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 11/30/2017] [Indexed: 11/10/2022]
Abstract
Background Gliomas are the most common primary tumors in central nervous system. The prognosis of the patients with glioma is poor regardless of the development of therapeutic strategies. Its aggressive behavior mainly depends on the potent ability of proliferation. The transcription factor EGR1 (early growth response 1) is a member of a zinc finger transcription factor family which plays an essential role in cell growth and proliferation. Methods EGR1 expression levels in 39 glioma tissues and 10 normal brain tissues were tested by RT-qPCR and Western-blotting. The effects of EGR1 on U251 cells, U251 stem-like cells (GSCs), and U87 cells proliferation were assessed using in vitro and in vivo cell proliferation assays. The specific binding between EGR1 and CCND1 promoter was confirmed by CHIP assay. EGF was used to improve EGR1 expression in this assay. Results EGR1 expression levels in human gliomas are decreased compared with normal brain tissues, however, the patients with low EGR1 expression level showed significantly enhanced patient survival in all glioma patients. EGR1 silencing inhibited proliferation and induced G1 phase arrest in glioma cells. EGR1 contributed to proliferation by directly raising CCND1. Meanwhile, EGR1 overexpression induced by EGF was able to promote the proliferation of glioma cells. Conclusions Our results show that stable knockdown EGR1 would inhibit glioma proliferation. The results suggest EGR1 showing lower expression in cancer tissues compared with normal tissues maybe still play an important role in tumor proliferation. Electronic supplementary material The online version of this article (10.1186/s13046-017-0656-4) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Dian-Gang Chen
- Institute for Cancer Research in People's Liberation Army, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037, China
| | - Bo Zhu
- Institute for Cancer Research in People's Liberation Army, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037, China
| | - Sheng-Qing Lv
- Department of Neurosurgery, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037, China
| | - Hongfan Zhu
- Institute for Cancer Research in People's Liberation Army, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037, China
| | - Jinliang Tang
- Department of Pathology, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037, China
| | - Changlin Huang
- Institute for Cancer Research in People's Liberation Army, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037, China
| | - Qingrui Li
- Department of Neurosurgery, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037, China
| | - Pu Zhou
- Institute for Cancer Research in People's Liberation Army, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037, China
| | - Dong-Lin Wang
- Department of Oncology, Cancer Hospital of Chongqing City, Chongqing, 400037, China
| | - Guang-Hui Li
- Institute for Cancer Research in People's Liberation Army, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037, China.
| |
Collapse
|
16
|
Ahmad HM, Muiwo P, Muthuswami R, Bhattacharya A. FosB regulates expression of miR-22 during PMA induced differentiation of K562 cells to megakaryocytes. Biochimie 2016; 133:1-6. [PMID: 27889568 DOI: 10.1016/j.biochi.2016.11.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 11/22/2016] [Indexed: 12/13/2022]
Abstract
Expression of many miRNAs is altered in different cancers and these changes are thought to play a key role in formation and progression of cancer. In chronic myelogenous leukemia (CML) a number of miRNAs are known to be down regulated as compared to normal cells. In this report we have investigated the mechanism of this down regulation by using PMA induced differentiation of CML cell line K562 to megakaryocytes as an experimental system. On treatment with PMA, expression of many down regulated miRNAs including miR-22 is induced. PMA also induces expression of several transcription factors, including FosB, EGR1 and EGR2. Our results using a number of approaches, such as promoter reporter assay, FosB knock down and Chip assay, suggest that the expression of miR-22 is regulated transcriptionally by FosB.
Collapse
Affiliation(s)
- Hafiz M Ahmad
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
| | - Pamchui Muiwo
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
| | - Rohini Muthuswami
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
| | - Alok Bhattacharya
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
| |
Collapse
|
17
|
Stallings CE, Kapali J, Ellsworth BS. Mouse Models of Gonadotrope Development. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2016; 143:1-48. [PMID: 27697200 DOI: 10.1016/bs.pmbts.2016.08.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The pituitary gonadotrope is central to reproductive function. Gonadotropes develop in a systematic process dependent on signaling factors secreted from surrounding tissues and those produced within the pituitary gland itself. These signaling pathways are important for stimulating specific transcription factors that ultimately regulate the expression of genes and define gonadotrope identity. Proper gonadotrope development and ultimately gonadotrope function are essential for normal sexual maturation and fertility. Understanding the mechanisms governing differentiation programs of gonadotropes is important to improve treatment and molecular diagnoses for patients with gonadotrope abnormalities. Much of what is known about gonadotrope development has been elucidated from mouse models in which important factors contributing to gonadotrope development and function have been deleted, ectopically expressed, or modified. This chapter will focus on many of these mouse models and their contribution to our current understanding of gonadotrope development.
Collapse
Affiliation(s)
- C E Stallings
- Department of Physiology, School of Medicine, Southern Illinois University, Carbondale, IL, United States
| | - J Kapali
- Department of Physiology, School of Medicine, Southern Illinois University, Carbondale, IL, United States
| | - B S Ellsworth
- Department of Physiology, School of Medicine, Southern Illinois University, Carbondale, IL, United States.
| |
Collapse
|