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Rodriguez-Rodriguez P, Arroyo-Garcia LE, Tsagkogianni C, Li L, Wang W, Végvári Á, Salas-Allende I, Plautz Z, Cedazo-Minguez A, Sinha SC, Troyanskaya O, Flajolet M, Yao V, Roussarie JP. A cell autonomous regulator of neuronal excitability modulates tau in Alzheimer's disease vulnerable neurons. Brain 2024:awae051. [PMID: 38462574 DOI: 10.1093/brain/awae051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 01/12/2024] [Accepted: 01/19/2024] [Indexed: 03/12/2024] Open
Abstract
Neurons from layer II of the entorhinal cortex (ECII) are the first to accumulate tau protein aggregates and degenerate during prodromal Alzheimer's disease (AD). Gaining insight into the molecular mechanisms underlying this vulnerability will help reveal genes and pathways at play during incipient stages of the disease. Here, we use a data-driven functional genomics approach to model ECII neurons in silico and identify the proto-oncogene DEK as a regulator of tau pathology. We show that epigenetic changes caused by Dek silencing alter activity-induced transcription, with major effects on neuronal excitability. This is accompanied by gradual accumulation of tau in the somatodendritic compartment of mouse ECII neurons in vivo, reactivity of surrounding microglia, and microglia-mediated neuron loss. These features are all characteristic of early AD. The existence of a cell-autonomous mechanism linking AD pathogenic mechanisms in the precise neuron type where the disease starts provides unique evidence that synaptic homeostasis dysregulation is of central importance in the onset of tau pathology in AD.
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Affiliation(s)
| | | | - Christina Tsagkogianni
- Department of Neurobiology Care Sciences and Society, Karolinska Institutet, 17 164, Solna, Sweden
| | - Lechuan Li
- Department of Computer Science, Rice University, Houston, TX 77004, USA
| | - Wei Wang
- Bioinformatics Resource Center, The Rockefeller University. New York, NY 10065, USA
| | - Ákos Végvári
- Division of Chemistry I, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, 17 164, Solna, Sweden
| | - Isabella Salas-Allende
- Laboratory of Molecular and Cellular Neuroscience, The Rockefeller University. New York, NY 10065, USA
| | - Zakary Plautz
- Laboratory of Molecular and Cellular Neuroscience, The Rockefeller University. New York, NY 10065, USA
| | - Angel Cedazo-Minguez
- Department of Neurobiology Care Sciences and Society, Karolinska Institutet, 17 164, Solna, Sweden
| | - Subhash C Sinha
- Helen & Robert Appel Alzheimer's Disease Research Institute. Brain and Mind Research Institute, Weill Cornell Medicine. New York, NY 10065, USA
| | - Olga Troyanskaya
- Department of Computer Science, Princeton University. Princeton, NJ 08540, USA
- Lewis-Sigler Institute for Integrative Genomics, Princeton University. Princeton, NJ 08544, USA
- Flatiron Institute, Simons Foundation. New York, NY 10010, USA
| | - Marc Flajolet
- Laboratory of Molecular and Cellular Neuroscience, The Rockefeller University. New York, NY 10065, USA
| | - Vicky Yao
- Division of Chemistry I, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, 17 164, Solna, Sweden
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2
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Bai Q, Liu R, Quan C, Han X, Wang D, Wang C, Wang Z, Li L, Li L, Piao H, Song Y, Yan G. DEK deficiency suppresses mitophagy to protect against house dust mite-induced asthma. Front Immunol 2024; 14:1289774. [PMID: 38274803 PMCID: PMC10808738 DOI: 10.3389/fimmu.2023.1289774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 12/18/2023] [Indexed: 01/27/2024] Open
Abstract
DEK protein is highly expressed in asthma. However, the mechanism of DEK on mitophagy in asthma has not been fully understood. This study aims to investigate the role and mechanism of DEK in asthmatic airway inflammation and in regulating PINK1-Parkin-mediated mitophagy, NLRP3 inflammasome activation, and apoptosis. PINK1-Parkin mitophagy, NLRP3 inflammasome, and apoptosis were examined after gene silencing or treatment with specific inhibitors (MitoTEMPO, MCC950, and Ac-DEVD-CHO) in house dust mite (HDM) or recombinant DEK (rmDEK)-induced WT and DEK-/- asthmatic mice and BEAS-2B cells. The regulatory role of DEK on ATAD3A was detected using ChIP-sequence and co-immunoprecipitation. rmDEK promoted eosinophil recruitment, and co-localization of TOM20 and LC3B, MFN1 and mitochondria, LC3B and VDAC, and ROS generation, reduced protein level of MnSOD in HDM induced-asthmatic mice. Moreover, rmDEK also increased DRP1 expression, PINK1-Parkin-mediated mitophagy, NLRP3 inflammasome activation, and apoptosis. These effects were partially reversed in DEK-/- mice. In BEAS-2B cells, siDEK diminished the Parkin, LC3B, and DRP1 translocation to mitochondria, mtROS, TOM20, and mtDNA. ChIP-sequence analysis showed that DEK was enriched on the ATAD3A promoter and could positively regulate ATAD3A expression. Additionally, ATAD3A was highly expressed in HDM-induced asthma models and interacted with DRP1, and siATAD3A could down-regulate DRP1 and mtDNA-mediated mitochondrial oxidative damage. Conclusively, DEK deficiency alleviates airway inflammation in asthma by down-regulating PINK1-Parkin mitophagy, NLRP3 inflammasome activation, and apoptosis. The mechanism may be through the DEK/ATAD3A/DRP1 signaling axis. Our findings may provide new potential therapeutic targets for asthma treatment.
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Affiliation(s)
- Qiaoyun Bai
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, China
| | - Ruobai Liu
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, China
| | - Changlin Quan
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, China
| | - Xue Han
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Respiratory Medicine, Affiliated Hospital of Yanbian University, Yanji, China
| | - Dandan Wang
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, China
| | - Chongyang Wang
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, China
| | - Zhiguang Wang
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Respiratory Medicine, Affiliated Hospital of Yanbian University, Yanji, China
| | - Li Li
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, China
| | - Liangchang Li
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, China
| | - Hongmei Piao
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Respiratory Medicine, Affiliated Hospital of Yanbian University, Yanji, China
| | - Yilan Song
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, China
| | - Guanghai Yan
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, China
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3
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Chen X, Pillay S, Lohmann F, Bieker JJ. Association of DDX5/p68 protein with the upstream erythroid enhancer element (EHS1) of the gene encoding the KLF1 transcription factor. J Biol Chem 2023; 299:105489. [PMID: 38000658 PMCID: PMC10750184 DOI: 10.1016/j.jbc.2023.105489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 10/28/2023] [Accepted: 11/09/2023] [Indexed: 11/26/2023] Open
Abstract
EKLF/KLF1 is an essential transcription factor that plays a global role in erythroid transcriptional activation. Regulation of KLF1 is of interest, as it displays a highly restricted expression pattern, limited to erythroid cells and its progenitors. Here we use biochemical affinity purification to identify the DDX5/p68 protein as an activator of KLF1 by virtue of its interaction with the erythroid-specific DNAse hypersensitive site upstream enhancer element (EHS1). We further show that this protein associates with DEK and CTCF. We postulate that the range of interactions of DDX5/p68 with these and other proteins known to interact with this element render it part of the enhanseosome complex critical for optimal expression of KLF1 and enables the formation of a proper chromatin configuration at the Klf1 locus. These individual interactions provide quantitative contributions that, in sum, establish the high-level activity of the Klf1 promoter and suggest they can be selectively manipulated for clinical benefit.
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Affiliation(s)
- Xiaoyong Chen
- Department of Cell, Developmental, and Regenerative Biology, Mount Sinai School of Medicine, New York, New York, USA
| | - Sanjana Pillay
- Department of Cell, Developmental, and Regenerative Biology, Mount Sinai School of Medicine, New York, New York, USA
| | - Felix Lohmann
- Department of Cell, Developmental, and Regenerative Biology, Mount Sinai School of Medicine, New York, New York, USA
| | - James J Bieker
- Department of Cell, Developmental, and Regenerative Biology, Mount Sinai School of Medicine, New York, New York, USA; Black Familly Stem Cell Institute, Mount Sinai School of Medicine, New York, New York, USA; Tisch Cancer Institute, Mount Sinai School of Medicine, New York, New York, USA; Mindich Child Health and Development Institute, Mount Sinai School of Medicine, New York, New York, USA.
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Zang J, Xiao L, Shi X, Liu S, Wang Y, Sun B, Ju S, Cui M, Jing R. Hsa_circ_0001479 accelerates tumorigenesis of gastric cancer and mediates immune escape. Int Immunopharmacol 2023; 124:110887. [PMID: 37683398 DOI: 10.1016/j.intimp.2023.110887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 08/28/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023]
Abstract
Gastric cancer (GC) is a common fatal malignant tumor of the digestive tract, particularly in Asia. Circular RNA (circRNA) has been proved to regulate malignancy progression and immunotherapeutic efficacy in multiple tumors, including GC. Notably, the function of circRNAs in GC has not been completely revealed. Therefore, exploration of more GC related circRNAs may provide potential strategies for GC treatment. In the study, it was observed that hsa_circ_0001479 exhibited a high level of expression in GC and was subsequently found to be associated with the depth of invasion, lymph node metastasis, and TNM stage. Functionally, the overexpression of hsa_circ_0001479 was found to enhance the proliferation and migration of GC cells, as evidenced by various experiments such as CCK-8, EdU, colony forming and transwell. Dual-luciferase reporter assay verified that hsa_circ_0001479 upregulated DEK expression by sponge targeting miR-133a-5p. Further investigations indicated DEK affected the entry of β-catenin into the nucleus by activating Wnt/β-catenin signaling pathway to promote accumulation of downstream c-Myc. As a transcription factor, c-Myc combined with the promoter of hsa_circ_0001479 parent gene to stimulate hsa_circ_0001479 generation. Besides, hsa_circ_0001479 inhibited theinfiltration with CD8+T cells in GC and associated with immune checkpoints. In summary, hsa_circ_0001479 accelerated the development and metastasis of GC and mediates immune escape of CD8+T cells. Targeting it may provide a novel immunotherapy to better locally treat GC and reduce the incidence of metastases.
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Affiliation(s)
- Jiayi Zang
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, Jiangsu, China
| | - Lin Xiao
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, Jiangsu, China
| | - Xin Shi
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, Jiangsu, China
| | - Sinan Liu
- Department of Laboratory Medicine, The First People's Hospital of Nantong, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Yan Wang
- Department of Pathology, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Baolan Sun
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, Jiangsu, China
| | - Shaoqing Ju
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, Jiangsu, China
| | - Ming Cui
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, Jiangsu, China.
| | - Rongrong Jing
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, Jiangsu, China.
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Wilcher KE, Page ERH, Vinnedge LMP. The Impact of the Chromatin Binding DEK Protein in Hematopoiesis and Acute Myeloid Leukemia. Exp Hematol 2023:S0301-472X(23)00225-4. [PMID: 37172756 DOI: 10.1016/j.exphem.2023.05.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 05/03/2023] [Accepted: 05/07/2023] [Indexed: 05/15/2023]
Abstract
Hematopoiesis is an exquisitely regulated process of cellular differentiation to create diverse cell types of the blood. Genetic mutations, or aberrant regulation of gene transcription, can interrupt normal hematopoiesis. This can have dire pathological consequences, including acute myeloid leukemia (AML), in which generation of the myeloid lineage of differentiated cells is interrupted. In this literature review, we discuss how the chromatin remodeling DEK protein can control hematopoietic stem cell (HSC) quiescence, hematopoietic progenitor cell (HPC) proliferation, and myelopoiesis. We further discuss the oncogenic consequences of the t(6;9) chromosomal translocation, which creates the DEK-NUP214 (aka: DEK-CAN) fusion gene, during the pathogenesis of AML. Combined, the literature indicates that DEK is crucial for maintaining homeostasis of hematopoietic stem and progenitor cells, including myeloid progenitors.
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Affiliation(s)
- Katherine E Wilcher
- Division of Oncology, Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229
| | - Evan R H Page
- Division of Oncology, Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229
| | - Lisa M Privette Vinnedge
- Division of Oncology, Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45267.
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6
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Zhang Y, Wang J, Luo R, Guo F, Wang X, Chu X, Zhao Y, Sun P. Stimulus-responsive and dual-target DNA nanodrugs for rheumatoid arthritis treatment. Int J Pharm 2023; 632:122543. [PMID: 36572263 DOI: 10.1016/j.ijpharm.2022.122543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 12/08/2022] [Accepted: 12/21/2022] [Indexed: 12/25/2022]
Abstract
Tumor necrosis factor receptor-1 (TNFR1) and DEK are closely associated with the development of rheumatoid arthritis (RA). Taking advantage of the high adenosine triphosphate (ATP) in RA microenvironment and the interactions of DNA aptamers with their targets, an ATP-responsive DNA nanodrug was constructed that simultaneously targets TNFR1 and DEK for RA therapy. To this end, DEK target aptamer DTA and TNFR1 target aptamer Apt1-67 were equipped with sticky ends to hybridize with ATP aptamer (AptATP) and fabricated DNA nanodrug DAT. Our results showed that DAT was successfully prepared with good stability. In the presence of ATP, DAT was disassembled, resulting in the release of DTA and Apt1-67. In vitro studies demonstrated that DAT was superior to the non-responsive DNA nanodrug TD-3A3T in terms of anti-inflammation activity and ATP was inevitable to maximize the anti-inflammation ability of DAT. The superior efficacy of DAT is attributed to the more potent inhibition of caspase-3 and NETs formation. In vivo results further confirmed the anti-RA efficacy of DAT, whereas the administration routes (intravenous injection and transdermal administration via microneedles) did not cause significant differences. Overall, the present study supplies an intelligent strategy for RA therapy and explores a promising administration route for future clinical medication of RA patients.
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Yang C, Shao Y, Wang X, Wang J, Wang P, Huang C, Wang W, Wang J. The Effect of the Histone Chaperones HSPA8 and DEK on Tumor Immunity in Hepatocellular Carcinoma. Int J Mol Sci 2023; 24:ijms24032653. [PMID: 36768989 PMCID: PMC9916749 DOI: 10.3390/ijms24032653] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 01/15/2023] [Accepted: 01/16/2023] [Indexed: 02/01/2023] Open
Abstract
Complex immune contexture leads to resistance to immunotherapy in hepatocellular carcinoma (HCC), and the need for new potential biomarkers of immunotherapy in HCC is urgent. Histone chaperones are vital determinants of gene expression and genome stability that regulate tumor development. This study aimed to investigate the effect of histone chaperones on tumor immunity in HCC. Bioinformatics analyses were initially performed using The Cancer Genome Atlas (TCGA) database, and were validated using the Gene Expression Omnibus (GEO) database and the International Cancer Genome Consortium (ICGC) database. Immune-related histone chaperones were screened with the Spearman rank coefficient. Consensus clustering was utilized to divide the HCC samples into two clusters. ESTIMATE, CIBERSORT and ssGSEA analyses were performed to assess immune infiltration. The expression of immunomodulatory genes, chemokines and chemokine receptors was analyzed to evaluate sensitivity to immunotherapy. The differentially expressed genes (DEGs) were included in weighted gene coexpression network analysis (WGCNA) to identify the hub genes. Enrichment analyses were used to investigate the functions of the hub genes. The Kaplan-Meier method and log-rank test were conducted to draw survival curves. A Cox regression analysis was utilized to identify independent risk factors affecting prognosis. HSPA8 and DEK were screened out from 36 known histone chaperones based on their strongest correlation with the ESTIMATE score. Cluster 2, with high HSPA8 expression and low DEK expression, tended to have stronger immune infiltration and better sensitivity to immunotherapy than Cluster 1, with low HSPA8 expression and high DEK expression. Furthermore, WGCNA identified 12 hub genes closely correlated with immune infiltration from the DEGs of the two clusters, of which FBLN2 was proven to be an independent protective factor of HCC patients. HSPA8 and DEK are expected to be biomarkers for precisely predicting the effect of immunotherapy, and FBLN2 is expected to be a therapeutic target of HCC.
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Affiliation(s)
- Chuanxin Yang
- Department of Hepatobiliary and Pancreatic Surgery, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Yaodi Shao
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Xiangjun Wang
- Department of Hepatobiliary and Pancreatic Surgery, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Jie Wang
- Department of Hepatobiliary and Pancreatic Surgery, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Puxiongzhi Wang
- Department of Hepatobiliary and Pancreatic Surgery, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Chao Huang
- Department of Cell Biology, Medical School, Kunming University of Science and Technology, Kunming 650500, China
| | - Wei Wang
- Department of Hepatobiliary and Pancreatic Surgery, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
- Correspondence: (W.W.); (J.W.)
| | - Jian Wang
- Department of Hepatobiliary and Pancreatic Surgery, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
- Correspondence: (W.W.); (J.W.)
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8
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Habiburrahman M, Sutopo S, Wardoyo MP. Role of DEK in carcinogenesis, diagnosis, prognosis, and therapeutic outcome of breast cancer: An evidence-based clinical review. Crit Rev Oncol Hematol 2023; 181:103897. [PMID: 36535490 DOI: 10.1016/j.critrevonc.2022.103897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 12/13/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
Breast cancer is a significantly burdening women's cancer with limited diagnostic modalities. DEK is a novel biomarker overexpressed in breast cancers, currently exhaustively researched for its diagnosis and prognosis. Search for relevant meta-analyses, cohorts, and experimental studies in the last fifteen years was done in five large scientific databases. Non-English, non-full text articles or unrelated studies were excluded. Thirteen articles discussed the potential of DEK to estimate breast cancer characteristics, treatment outcomes, and prognosis. This proto-oncogene plays a role in breast carcinogenesis, increasing tumour proliferation and invasion, preventing apoptosis, and creating an immunodeficient tumour milieu with M2 tumour-associated macrophages. DEK is also associated with worse clinicopathological features and survival in breast cancer patients. Using a Kaplan-Meier plotter data analysis, DEK expression predicts worse overall survival (HR 1.24, 95%CI: 1.01-1.52, p = 0.039), comparable to other biomarkers. DEK is a promising novel biomarker requiring further research to determine its bedside applications.
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Affiliation(s)
- Muhammad Habiburrahman
- Faculty of Medicine Universitas Indonesia, Central Jakarta, DKI Jakarta, Indonesia; Dr. Cipto Mangunkusumo Hospital, Central Jakarta, DKI Jakarta, Indonesia.
| | - Stefanus Sutopo
- Faculty of Medicine Universitas Indonesia, Central Jakarta, DKI Jakarta, Indonesia
| | - Muhammad Prasetio Wardoyo
- Faculty of Medicine Universitas Indonesia, Central Jakarta, DKI Jakarta, Indonesia; Dr. Cipto Mangunkusumo Hospital, Central Jakarta, DKI Jakarta, Indonesia
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Song Y, Wang Z, Jiang J, Piao Y, Bai Q, Piao Q, Li L, Xu C, Liu H, Piao H, Li L, Yan G. miR-181-5p attenuates neutrophilic inflammation in asthma by targeting DEK. Int Immunopharmacol 2022; 112:109243. [PMID: 36115279 DOI: 10.1016/j.intimp.2022.109243] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/30/2022] [Accepted: 09/07/2022] [Indexed: 11/19/2022]
Abstract
We investigated the regulatory role of miR-181b-5p in neutrophilic asthma and its mechanisms by targeting DEK. DEK, matrix metalloproteinase (MMP)-2, and MMP-9 were overexpressed and the miR-181b-5p was decreased in mice with neutrophilic asthma. DEK was a direct target of miR-181b-5p. In mouse model, miR-181b-5p agomir had an inhibitory effect on airway inflammation and remodeling. miR-181b-5p inhibited DEK/p-GSK-3βSer9/β-catenin/MMP-9 pathway activation by regulating Wnt ligands in BEAS-2B and 16HBE cells. The ability of supernatants from human bronchial epithelial cells (hBECs) co-stimulated with CXCL8 (IL-8) and miR-181b-5p to induce NETs was weaker than that of IL-8 alone. Moreover, DEK overexpression led to excessive mitochondrial dysfunction, including DRP1 up-regulation, p-DRP1ser637 and MFN2 down-regulation, mitochondrial membrane potential loss, excessive mtROS generation and mitochondrial incompleteness. Interestingly, all these phenotypes were rescued by Wnt inhibitor DKK-1 and miR-181b-5p agomir. Additionally, inhibition of DRP1 with Mdivi-1 decreased MMP-9 on BEAS-2B cells. Overall, miR-181b-5p could attenuate neutrophilic asthma through inhibition of NETs release, DEK/p-GSK-3βSer9/β-catenin/MMP-9 pathway, DEK/Wnt/DRP1/MMP-9 and mitochondria damage. It may become a new therapeutic target for neutrophilic asthma.
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Affiliation(s)
- Yilan Song
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji 133002, Jilin, PR China; Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji 133002, Jilin, PR China
| | - Zhiguang Wang
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji 133002, Jilin, PR China; Department of Respiratory Medicine, Affiliated Hospital of Yanbian University, Yanji 133000, Jilin, PR China
| | - Jingzhi Jiang
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji 133002, Jilin, PR China; Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji 133002, Jilin, PR China
| | - Yihua Piao
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji 133002, Jilin, PR China; Department of Intensive Care Unit, Affiliated Hospital of Yanbian University, Yanji 133000, Jilin, PR China
| | - Qiaoyun Bai
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji 133002, Jilin, PR China; Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji 133002, Jilin, PR China
| | - Qinji Piao
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji 133002, Jilin, PR China; Department of Respiratory Medicine, Affiliated Hospital of Yanbian University, Yanji 133000, Jilin, PR China
| | - Li Li
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji 133002, Jilin, PR China; Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji 133002, Jilin, PR China
| | - Chang Xu
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji 133002, Jilin, PR China; Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji 133002, Jilin, PR China
| | - Hanye Liu
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji 133002, Jilin, PR China; Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji 133002, Jilin, PR China
| | - Hongmei Piao
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji 133002, Jilin, PR China; Department of Respiratory Medicine, Affiliated Hospital of Yanbian University, Yanji 133000, Jilin, PR China
| | - Liangchang Li
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji 133002, Jilin, PR China; Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji 133002, Jilin, PR China.
| | - Guanghai Yan
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji 133002, Jilin, PR China; Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji 133002, Jilin, PR China.
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10
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Savari O, Chang JC, Bishop JA, Sakthivel MK, Askin FB, Rekhtman N. First Report of Thoracic Carcinoma With DEK::AFF2 Rearrangement: A Case Report. J Thorac Oncol 2022; 17:1050-1053. [PMID: 35773081 PMCID: PMC9357138 DOI: 10.1016/j.jtho.2022.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 05/24/2022] [Accepted: 05/25/2022] [Indexed: 11/24/2022]
Abstract
DEK::AFF2 carcinomas of the head and neck region have been recently described and reported to have aggressive clinical behavior but exceptional sensitivity to immunotherapy. We report a case of a 26-year-old female, never smoker, with a 5.2-cm left lower lobe central lung mass, with morphologic features identical to those reported for DEK::AFF2 head and neck carcinomas, including mixed papillary exophytic and invasive components, squamous/basaloid features, and monomorphic cytomorphology. DEK (exon 7)::AFF2 (exon 9) fusion was identified by whole-transcriptome RNA sequencing. This is the first report of thoracic DEK::AFF2 carcinoma, indicating that these tumors are not confined to the head and neck region but can involve both upper and lower respiratory tracts. This entity should be considered in the differential diagnosis of squamous cell carcinomas in never smokers lacking other known oncogenic mutations.
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Affiliation(s)
- Omid Savari
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Jason C Chang
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Justin A Bishop
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, Texas
| | | | - Frederic B Askin
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, North Carolina
| | - Natasha Rekhtman
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York.
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11
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Wang X, Zhou X, Zhang L, Zhang X, Yang C, Piao Y, Zhao J, Jin L, Jin G, An R, Ren X. Crowberry inhibits cell proliferation and migration through a molecular mechanism that includes inhibition of DEK and Akt signaling in cholangiocarcinoma. Chin Med 2022; 17:69. [PMID: 35698073 PMCID: PMC9190153 DOI: 10.1186/s13020-022-00623-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 05/08/2022] [Indexed: 11/17/2022] Open
Abstract
Background Cholangiocarcinoma (CCA) is a rare biliary adenocarcinoma related to poor clinical prognosis. Crowberry is an herbal medicine used to control inflammatory diseases and reestablish antioxidant enzyme activity. Although crowberry shows significant therapeutic efficacy in various tumors and diseases, its anticancer effects and specific molecular mechanisms in CCA are poorly understood. Aim of the study This study was conducted to characterize crowberry effects on CCA cells behavior. Materials and methods The chemical profiles of crowberry extract was qualitatively analyzed by high-performance liquid chromatography (HPLC) and HPLC–tandem mass spectrometry. MTT, colony formation and EdU assays were performed to measure cell proliferation. The effect of crowberry treatment on CCA cell migration was assessed by wound healing and migration assays. Moreover, Hoechst staining assay and flow cytometry were performed to assess the cell apoptosis rate. Western blotting was used to assess the protein expression levels of key factors associated with apoptosis, the Akt signaling pathway, and the epithelial-mesenchymal transition. A xenograft model was established and immunohistochemical and H&E staining was performed to assess crowberry antitumor effects in vivo. Results Crowberry clearly inhibited CCA cells proliferation and migration in a dose-dependent manner and induced apoptosis in vitro. Crowberry inactivated the PI3K/Akt signaling pathway by regulating DEK in vitro and significantly inhibited tumor growth by downregulating the DEK expression in xenograft models. Conclusion Crowberry inhibits CCA cells proliferation and migration through a molecular mechanism that includes inhibition of DEK and Akt signaling pathway inhibition in vitro and in vivo. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13020-022-00623-6. Crowberry alterd expression levels of key mediators in PI3K/Akt signaling pathway. Crowberry alterd expression levels of key mediators in PI3K/Akt signaling pathway. Crowberry suppressed the expression of the proto-oncogene DEK in vivo and in vitro. Crowberry inhibited CCA progression and migration through a molecular mechanism that includes inhibition of DEK and the Akt signaling pathway in vivo and in vitro.
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Affiliation(s)
- Xue Wang
- Department of Pathology and Cancer Research Center, Yanbian University, Jilin Yanbian, 133002, China.,Key Laboratory of Pathobiology, Yanbian University, State Ethnic Affairs Commission, Yanji, China
| | - Xuebing Zhou
- Department of Pathology and Cancer Research Center, Yanbian University, Jilin Yanbian, 133002, China.,Key Laboratory of Pathobiology, Yanbian University, State Ethnic Affairs Commission, Yanji, China
| | - Ludan Zhang
- Key Laboratory of Natural Medicines of the Changbai Mountain (Yanbian University), Ministry of Education, Jilin Yanbian, 133002, China
| | - Xin Zhang
- Department of Pathology and Cancer Research Center, Yanbian University, Jilin Yanbian, 133002, China.,Key Laboratory of Pathobiology, Yanbian University, State Ethnic Affairs Commission, Yanji, China
| | - Chunyu Yang
- Department of Pathology and Cancer Research Center, Yanbian University, Jilin Yanbian, 133002, China.,Key Laboratory of Pathobiology, Yanbian University, State Ethnic Affairs Commission, Yanji, China
| | - Yingshi Piao
- Department of Pathology and Cancer Research Center, Yanbian University, Jilin Yanbian, 133002, China.,Key Laboratory of Pathobiology, Yanbian University, State Ethnic Affairs Commission, Yanji, China
| | - Jinhua Zhao
- Key Laboratory of Natural Medicines of the Changbai Mountain (Yanbian University), Ministry of Education, Jilin Yanbian, 133002, China
| | - Lili Jin
- Key Laboratory of Natural Medicines of the Changbai Mountain (Yanbian University), Ministry of Education, Jilin Yanbian, 133002, China
| | - Guihua Jin
- Department of Immunology and Pathogenic Biology, Yanbian University, Yanji, 133002, China.
| | - Renbo An
- Key Laboratory of Natural Medicines of the Changbai Mountain (Yanbian University), Ministry of Education, Jilin Yanbian, 133002, China.
| | - Xiangshan Ren
- Department of Pathology and Cancer Research Center, Yanbian University, Jilin Yanbian, 133002, China. .,Key Laboratory of Pathobiology, Yanbian University, State Ethnic Affairs Commission, Yanji, China. .,Key Laboratory of Natural Medicines of the Changbai Mountain (Yanbian University), Ministry of Education, Jilin Yanbian, 133002, China.
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12
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Zhang HM, Qi FF, Wang J, Duan YY, Zhao LL, Wang YD, Zhang TC, Liao XH. The m6A Methyltransferase METTL3-Mediated N6-Methyladenosine Modification of DEK mRNA to Promote Gastric Cancer Cell Growth and Metastasis. Int J Mol Sci 2022; 23:ijms23126451. [PMID: 35742899 PMCID: PMC9223399 DOI: 10.3390/ijms23126451] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 06/05/2022] [Accepted: 06/07/2022] [Indexed: 12/13/2022] Open
Abstract
Gastric cancer (GC) is the fifth most common cancer and the third deadliest cancer in the world, and the occurrence and development of GC are influenced by epigenetics. Methyltransferase-like 3 (METTL3) is a prominent RNA n6-adenosine methyltransferase (m6A) that plays an important role in tumor growth by controlling the work of RNA. This study aimed to reveal the biological function and molecular mechanism of METTL3 in GC. The expression level of METTL3 in GC tissues and cells was detected by qPCR, Western blot and immunohistochemistry, and the expression level and prognosis of METTL3 were predicted in public databases. CCK-8, colony formation, transwell and wound healing assays were used to study the effect of METTL3 on GC cell proliferation and migration. In addition, the enrichment effect of METTL3 on DEK mRNA was detected by the RIP experiment, the m6A modification effect of METTL3 on DEK was verified by the MeRIP experiment and the mRNA half-life of DEK when METTL3 was overexpressed was detected. The dot blot assay detects m6A modification at the mRNA level. The effect of METTL3 on cell migration ability in vivo was examined by tail vein injection of luciferase-labeled cells. The experimental results showed that METTL3 was highly expressed in GC tissues and cells, and the high expression of METTL3 was associated with a poor prognosis. In addition, the m6A modification level of mRNA was higher in GC tissues and GC cell lines. Overexpression of METTL3 in MGC80-3 cells and AGS promoted cell proliferation and migration, while the knockdown of METTL3 inhibited cell proliferation and migration. The results of in vitro rescue experiments showed that the knockdown of DEK reversed the promoting effects of METTL3 on cell proliferation and migration. In vivo experiments showed that the knockdown of DEK reversed the increase in lung metastases caused by the overexpression of METTL3 in mice. Mechanistically, the results of the RIP experiment showed that METTL3 could enrich DEK mRNA, and the results of the MePIP and RNA half-life experiments indicated that METTL3 binds to the 3'UTR of DEK, participates in the m6A modification of DEK and promotes the stability of DEK mRNA. Ultimately, we concluded that METTL3 promotes GC cell proliferation and migration by stabilizing DEK mRNA expression. Therefore, METTL3 is a potential biomarker for GC prognosis and a therapeutic target.
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Affiliation(s)
| | | | | | | | | | | | - Tong-Cun Zhang
- Correspondence: (T.-C.Z.); (X.-H.L.); Tel.: +86-027-6889-7109 (T.-C.Z.); +86-027-6889-3368 (X.-H.L.)
| | - Xing-Hua Liao
- Correspondence: (T.-C.Z.); (X.-H.L.); Tel.: +86-027-6889-7109 (T.-C.Z.); +86-027-6889-3368 (X.-H.L.)
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13
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Liu B, Sun Y, Zhang Y, Xing Y, Suo J. DEK modulates both expression and alternative splicing of cancer‑related genes. Oncol Rep 2022; 47:111. [PMID: 35475534 PMCID: PMC9073418 DOI: 10.3892/or.2022.8322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 04/11/2022] [Indexed: 11/05/2022] Open
Abstract
DEK is known to be a potential proto‑oncogene and is highly expressed in gastric cancer (GC); thus, DEK is considered to contribute to the malignant progression of GC. DEK is an RNA‑binding protein involved in transcription, DNA repair, and selection of splicing sites during mRNA processing; however, its precise function remains elusive due to the lack of clarification of the overall profiles of gene transcription and post‑transcriptional splicing that are regulated by DEK. We performed our original whole‑genomic RNA‑Seq data to analyze the global transcription and alternative splicing profiles in a human GC cell line by comparing DEK siRNA‑treated and control conditions, dissecting both differential gene expression and potential alternative splicing events regulated by DEK. The siRNA‑mediated knockdown of DEK in a GC cell line led to significant changes in gene expression of multiple cancer‑related genes including both oncogenes and tumor suppressors. Moreover, it was revealed that DEK regulated a number of alternative splicing in genes which were significantly enriched in various cancer‑related pathways including apoptosis and cell cycle processes. This study clarified for the first time that DEK has a regulatory effect on the alternative splicing, as well as on the expression, of numerous cancer‑related genes, which is consistent with the role of DEK as a possible oncogene. Our results further expand the importance and feasibility of DEK as a clinical therapeutic target for human malignancies including GC.
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Affiliation(s)
- Bin Liu
- Department of Gastrocolorectal Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Yuanlin Sun
- Department of Gastrocolorectal Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Yang Zhang
- Department of Gastrocolorectal Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Yanpeng Xing
- Department of Gastrocolorectal Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Jian Suo
- Department of Gastrocolorectal Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
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14
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Wang J, Wen T, Li Z, Che X, Gong L, Jiao Z, Qu X, Liu Y. Correction for: CD36 upregulates DEK transcription and promotes cell migration and invasion via GSK-3β/β-catenin-mediated epithelial-to-mesenchymal transition in gastric cancer. Aging (Albany NY) 2022; 14:3720-3721. [PMID: 35488885 PMCID: PMC9085240 DOI: 10.18632/aging.204046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 04/20/2022] [Indexed: 11/25/2022]
Affiliation(s)
- Jin Wang
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, 110001, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001, China.,Liaoning Province Clinical Research Center for Cancer, The First Hospital of China Medical University, Shenyang, 110001, China.,Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Ti Wen
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, 110001, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001, China.,Liaoning Province Clinical Research Center for Cancer, The First Hospital of China Medical University, Shenyang, 110001, China.,Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Zhi Li
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, 110001, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001, China.,Liaoning Province Clinical Research Center for Cancer, The First Hospital of China Medical University, Shenyang, 110001, China.,Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Xiaofang Che
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, 110001, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001, China.,Liaoning Province Clinical Research Center for Cancer, The First Hospital of China Medical University, Shenyang, 110001, China.,Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Libao Gong
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, 110001, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001, China.,Liaoning Province Clinical Research Center for Cancer, The First Hospital of China Medical University, Shenyang, 110001, China.,Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Zihan Jiao
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, 110001, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001, China.,Liaoning Province Clinical Research Center for Cancer, The First Hospital of China Medical University, Shenyang, 110001, China.,Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Xiujuan Qu
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, 110001, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001, China.,Liaoning Province Clinical Research Center for Cancer, The First Hospital of China Medical University, Shenyang, 110001, China.,Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Yunpeng Liu
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, 110001, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001, China.,Liaoning Province Clinical Research Center for Cancer, The First Hospital of China Medical University, Shenyang, 110001, China.,Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Hospital of China Medical University, Shenyang, 110001, China
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15
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Zhang H, Wang J, Wang Y, Li J, Zhao L, Zhang T, Liao X. Long Non-Coding LEF1-AS1 Sponge miR-5100 Regulates Apoptosis and Autophagy in Gastric Cancer Cells via the miR-5100/ DEK/AMPK-mTOR Axis. Int J Mol Sci 2022; 23:4787. [PMID: 35563178 PMCID: PMC9101949 DOI: 10.3390/ijms23094787] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/21/2022] [Accepted: 04/24/2022] [Indexed: 12/16/2022] Open
Abstract
DEK and miR-5100 play critical roles in many steps of cancer initiation and progression and are directly or indirectly regulated by most promoters and repressors. LEF1-AS1 as a long non-coding RNA can regulate tumor development through sponge miRNA. The effect and regulatory mechanism of DEK on autophagy and apoptosis in gastric cancer (GC), and the role between miR-5100 and DEK or miR-5100 and LEF1-AS1 are still unclear. Our study found that DEK was highly expressed in gastric cancer tissues and cell lines, and knockdown of DEK inhibited the autophagy of cells, promoted apoptosis, and suppressed the malignant phenotype of gastric cancer. DEK regulates autophagy and apoptosis through the AMPK/mTOR signaling pathway. In addition, miR-5100 inhibits autophagy and promotes apoptosis in GC cells while LEF1-AS1 had the opposite effect. Studies have shown that miR-5100 acts by targeting the 3'UTR of DEK, and LEF1-AS1 regulates the expression of miR-5100 by sponging with mIR-5100. In conclusion, our results found that LEF1-AS1 and miR-5100 sponge function, and the miR-5100/DEK/AMPK/mTOR axis regulates autophagy and apoptosis in gastric cancer cells.
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Affiliation(s)
| | | | | | | | | | | | - Xinghua Liao
- Institute of Biology and Medicine, College of Life and Health Sciences, Wuhan University of Science and Technology, Wuhan 430000, China; (H.Z.); (J.W.); (Y.W.); (J.L.); (L.Z.); (T.Z.)
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16
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Lai CY, Hsieh MC, Yeh CM, Yang PS, Cheng JK, Wang HH, Lin KH, Nie ST, Lin TB, Peng HY. MicroRNA-489-3p attenuates neuropathic allodynia by regulating oncoprotein DEK/TET1-dependent epigenetic modification in the dorsal horn. Neuropharmacology 2022; 210:109028. [PMID: 35304174 DOI: 10.1016/j.neuropharm.2022.109028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 03/08/2022] [Accepted: 03/10/2022] [Indexed: 11/18/2022]
Abstract
Originally characterized as an oncoprotein overexpressed in many forms of cancer that participates in numerous cellular pathways, DEK has since been well described regarding the regulation of epigenetic markers and transcription factors in neurons. However, its role in neuropathic allodynia processes remain elusive and intriguingly complex. Here, we show that DEK, which is induced in spinal dorsal horn neurons after spinal nerve ligation (SNL), is regulated by miR-489-3p. Moreover, SNL-induced decrease in miR-489-3p expression increased the expression of DEK, which recruited TET1 to the promoter fragments of the Bdnf, Grm5, and Stat3 genes, thereby enhancing their transcription in the dorsal horn. Remarkably, these effects were also induced by intrathecally administering naïve animals with miR-489-3p inhibitor, which could be inhibited by knockdown of TET1 siRNA or DEK siRNA. Conversely, delivery of intrathecal miR-489-3p-mimic into SNL rats attenuated allodynia behavior and reversed protein expression coupled to the promoter segments in the dorsal horn. Thus, a spinal miR-489-3p/DEK/TET1 transcriptional axis may contribute to neuropathic allodynia. These results may provide a new target for treating neuropathic allodynia.
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Affiliation(s)
- Cheng-Yuan Lai
- Department of Medicine, Mackay Medical College, New Taipei, Taiwan
| | - Ming-Chun Hsieh
- Department of Medicine, Mackay Medical College, New Taipei, Taiwan
| | - Chou-Ming Yeh
- Division of Thoracic Surgery, Department of Health, Taichung Hospital, Executive Yuan, Taichung, Taiwan
| | - Po-Sheng Yang
- Department of Medicine, Mackay Medical College, New Taipei, Taiwan; Department of Surgery, Mackay Memorial Hospital, Taipei, Taiwan
| | - Jen-Kun Cheng
- Department of Medicine, Mackay Medical College, New Taipei, Taiwan; Department of Anesthesiology, Mackay Memorial Hospital, Taipei, Taiwan
| | - Hsueh-Hsiao Wang
- Department of Medicine, Mackay Medical College, New Taipei, Taiwan
| | - Kuan-Hung Lin
- Institute of Biomedical Sciences, MacKay Medical College, New Taipei City, Taiwan; Department of Pharmacology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Siao-Tong Nie
- Department of Medicine, Mackay Medical College, New Taipei, Taiwan
| | - Tzer-Bin Lin
- Department of Pharmacology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Cell Physiology and Molecular Image Research Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan; Department of Biotechnology, College of Medical and Health Science, Asia University, Taichung, Taiwan
| | - Hsien-Yu Peng
- Department of Medicine, Mackay Medical College, New Taipei, Taiwan.
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17
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Capitano ML, Sammour Y, Ropa J, Legendre M, Mor-Vaknin N, Markovitz DM. DEK, a nuclear protein, is chemotactic for hematopoietic stem/progenitor cells acting through CXCR2 and Gαi signaling. J Leukoc Biol 2022; 112:449-456. [PMID: 35137444 PMCID: PMC9541944 DOI: 10.1002/jlb.3ab1120-740r] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/16/2021] [Accepted: 12/21/2021] [Indexed: 12/17/2022] Open
Abstract
Few cytokines/growth modulating proteins are known to be chemoattractants for hematopoietic stem (HSC) and progenitor cells (HPC); stromal cell‐derived factor 1α (SDF1α/CXCL12) being the most potent known such protein. DEK, a nuclear DNA‐binding chromatin protein with hematopoietic cytokine‐like activity, is a chemotactic factor attracting mature immune cells. Transwell migration assays were performed to test whether DEK serves as a chemotactic agent for HSC/HPC. DEK induced dose‐ and time‐dependent directed migration of lineage negative (Lin–) Sca‐1+ c‐Kit+ (LSK) bone marrow (BM) cells, HSCs and HPCs. Checkerboard assays demonstrated that DEK's activity was chemotactic (directed), not chemokinetic (random migration), in nature. DEK and SDF1α compete for HSC/HPC chemotaxis. Blocking CXCR2 with neutralizing antibodies or inhibiting Gαi protein signaling with Pertussis toxin pretreatment inhibited migration of LSK cells toward DEK. Thus, DEK is a novel and rare chemotactic agent for HSC/HPC acting in a direct or indirect CXCR2 and Gαi protein‐coupled signaling‐dependent manner.
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Affiliation(s)
- Maegan L Capitano
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Yasser Sammour
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - James Ropa
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Maureen Legendre
- Department of Internal Medicine, Division of Infectious Diseases, University of Michigan, Ann Arbor, Michigan, USA
| | - Nirit Mor-Vaknin
- Department of Internal Medicine, Division of Infectious Diseases, University of Michigan, Ann Arbor, Michigan, USA
| | - David M Markovitz
- Department of Internal Medicine, Division of Infectious Diseases, University of Michigan, Ann Arbor, Michigan, USA
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18
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Ge W, Chen Y, Guo Y, Zhao D, Mu L, Zhang K, Zhuo W. KIF15 upregulation promotes leiomyosarcoma cell growth via promoting USP15-mediated DEK deubiquitylation. Biochem Biophys Res Commun 2021; 570:117-124. [PMID: 34280614 DOI: 10.1016/j.bbrc.2021.07.042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 07/12/2021] [Indexed: 12/21/2022]
Abstract
Kinesin Family Member 15 (KIF15) is a plus end-directed microtubule motor, which exerts complex regulations in cancer biology. This study aimed to explore the functional role of KIF15 in leiomyosarcoma (LMS). Bioinformatic analysis was carried out using data from The Cancer Genome Atlas (TCGA)-Sarcoma (SARC). LMS cell lines SK-UT-1 and SK-LMS-1 were used as in vitro cell models. Results showed that LMS patients with high KIF15 expression had significantly worse survival than the low KIF15 expression counterparts. KIF15 knockdown slowed, while KIF15 overexpression increased the proliferation of SK-UT-1 and SK-LMS-1 cells. Co-IP assay confirmed mutual interaction between endogenous KIF15 and DEK (encoded by DEK proto-oncogene). KIF15 knockdown facilitated DEK degradation, while KIF15 overexpression slowed DEK degradation. In ubiquitination assay, a significant increase in DEK polyubiquitylation was observed when KIF15 expression was suppressed. USP15 physically interacted with both DEK and KIF15 in the cells. USP15 knockdown decreased DEK protein stability and canceled KIF15-mediated DEK stabilization. USP15 overexpression enhanced DEK stability, the effect of which was impaired by KIF15 knockdown. USP15 overexpression reduced DEK polyubiquitination. USP15 knockdown increased DEK polyubiquitination and canceled the effect of KIF15 overexpression on reducing DEK polyubiquitination. DEK overexpression enhanced the proliferation of SK-UT-1 and SK-LMS-1 cells. DEK knockdown decreased cell proliferation and canceled the effect of KIF15 overexpression on cell proliferation. In conclusion, this study revealed a novel mechanism that KIF15 enhances LMS cell proliferation via preventing DEK protein from degradation by increasing USP15 mediated deubiquitylation.
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Affiliation(s)
- Weiming Ge
- Foot and Ankle Surgery, Luoyang Orthopedic Hospital of Henan Province, Orthopedic Hospital of Henan Province, Luoyang, Henan, China
| | - Yuxuan Chen
- Center of Traumatic Orthopedics, People's Liberation Army 990 Hospital, Xinyang, Henan, China
| | - Yusheng Guo
- Foot and Ankle Surgery, Luoyang Orthopedic Hospital of Henan Province, Orthopedic Hospital of Henan Province, Luoyang, Henan, China
| | - Dawei Zhao
- Foot and Ankle Surgery, Luoyang Orthopedic Hospital of Henan Province, Orthopedic Hospital of Henan Province, Luoyang, Henan, China
| | - Ling Mu
- Foot and Ankle Surgery, Luoyang Orthopedic Hospital of Henan Province, Orthopedic Hospital of Henan Province, Luoyang, Henan, China
| | - Kun Zhang
- Foot and Ankle Surgery, Luoyang Orthopedic Hospital of Henan Province, Orthopedic Hospital of Henan Province, Luoyang, Henan, China
| | - Wenkun Zhuo
- Department of Orthopedics and Traumatology, 960 Hospital of PLA, Jinan, Shandong, China.
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19
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Waidmann S, Petutschnig E, Rozhon W, Molnár G, Popova O, Mechtler K, Jonak C. GSK3-mediated phosphorylation of DEK3 regulates chromatin accessibility and stress tolerance in Arabidopsis. FEBS J 2021; 289:473-493. [PMID: 34492159 DOI: 10.1111/febs.16186] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/19/2021] [Accepted: 09/06/2021] [Indexed: 12/18/2022]
Abstract
Chromatin dynamics enable the precise control of transcriptional programmes. The balance between restricting and opening of regulatory sequences on the DNA needs to be adjusted to prevailing conditions and is fine-tuned by chromatin remodelling proteins. DEK is an evolutionarily conserved chromatin architectural protein regulating important chromatin-related processes. However, the molecular link between DEK-induced chromatin reconfigurations and upstream signalling events remains unknown. Here, we show that ASKβ/AtSK31 is a salt stress-activated glycogen synthase kinase 3 (GSK3) from Arabidopsis thaliana that phosphorylates DEK3. This specific phosphorylation alters nuclear DEK3 protein complex composition and affects nucleosome occupancy and chromatin accessibility that is translated into changes in gene expression, contributing to salt stress tolerance. These findings reveal that DEK3 phosphorylation is critical for chromatin function and cellular stress response and provide a mechanistic example of how GSK3-based signalling is directly linked to chromatin, facilitating a transcriptional response.
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Affiliation(s)
- Sascha Waidmann
- Gregor Mendel Institute, Austrian Academy of Sciences, Vienna BioCenter, Austria
| | - Elena Petutschnig
- Gregor Mendel Institute, Austrian Academy of Sciences, Vienna BioCenter, Austria
| | - Wilfried Rozhon
- Gregor Mendel Institute, Austrian Academy of Sciences, Vienna BioCenter, Austria
| | - Gergely Molnár
- AIT Austrian Institute of Technology, Center for Health & Bioresources, Tulln, Austria
| | - Olga Popova
- Gregor Mendel Institute, Austrian Academy of Sciences, Vienna BioCenter, Austria
| | - Karl Mechtler
- Research Institute of Molecular Pathology, Vienna BioCenter, Austria
| | - Claudia Jonak
- Gregor Mendel Institute, Austrian Academy of Sciences, Vienna BioCenter, Austria.,AIT Austrian Institute of Technology, Center for Health & Bioresources, Tulln, Austria
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20
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Zong W, Zhao B, Xi Y, Bordiya Y, Mun H, Cerda NA, Kim DH, Sung S. DEK domain-containing proteins control flowering time in Arabidopsis. New Phytol 2021; 231:182-192. [PMID: 33774831 PMCID: PMC8985477 DOI: 10.1111/nph.17366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 03/20/2021] [Indexed: 05/07/2023]
Abstract
Evolutionarily conserved DEK domain-containing proteins have been implicated in multiple chromatin-related processes, mRNA splicing and transcriptional regulation in eukaryotes. Here, we show that two DEK proteins, DEK3 and DEK4, control the floral transition in Arabidopsis. DEK3 and DEK4 directly associate with chromatin of related flowering repressors, FLOWERING LOCUS C (FLC), and its two homologs, MADS AFFECTING FLOWERING4 (MAF4) and MAF5, to promote their expression. The binding of DEK3 and DEK4 to a histone octamer in vivo affects histone modifications at FLC, MAF4 and MAF5 loci. In addition, DEK3 and DEK4 interact with RNA polymerase II and promote the association of RNA polymerase II with FLC, MAF4 and MAF5 chromatin to promote their expression. Our results show that DEK3 and DEK4 directly interact with chromatin to facilitate the transcription of key flowering repressors and thus prevent precocious flowering in Arabidopsis.
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Affiliation(s)
- Wei Zong
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Bo Zhao
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Yanpeng Xi
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Yogendra Bordiya
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Hyungwon Mun
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Nicholas A Cerda
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Dong-Hwan Kim
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Sibum Sung
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
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21
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Guo H, Prell M, Königs H, Xu N, Waldmann T, Hermans-Sachweh B, Ferrando-May E, Lüscher B, Kappes F. Bacterial Growth Inhibition Screen (BGIS) identifies a loss-of-function mutant of the DEK oncogene, indicating DNA modulating activities of DEK in chromatin. FEBS Lett 2021; 595:1438-1453. [PMID: 33686684 DOI: 10.1002/1873-3468.14070] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 02/26/2021] [Indexed: 02/06/2023]
Abstract
The DEK oncoprotein regulates cellular chromatin function via a number of protein-protein interactions. However, the biological relevance of its unique pseudo-SAP/SAP-box domain, which transmits DNA modulating activities in vitro, remains largely speculative. As hypothesis-driven mutations failed to yield DNA-binding null (DBN) mutants, we combined random mutagenesis with the Bacterial Growth Inhibition Screen (BGIS) to overcome this bottleneck. Re-expression of a DEK-DBN mutant in newly established human DEK knockout cells failed to reduce the increase in nuclear size as compared to wild type, indicating roles for DEK-DNA interactions in cellular chromatin organization. Our results extend the functional roles of DEK in metazoan chromatin and highlight the predictive ability of recombinant protein toxicity in E. coli for unbiased studies of eukaryotic DNA modulating protein domains.
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Affiliation(s)
- Haihong Guo
- Institute for Biochemistry and Molecular Biology, Medical School, RWTH Aachen University, Germany
| | - Malte Prell
- Institute for Biochemistry and Molecular Biology, Medical School, RWTH Aachen University, Germany
| | - Hiltrud Königs
- Institute of Pathology, Medical School, RWTH Aachen University, Germany
| | - Nengwei Xu
- Department of Biological Sciences, Xi'an Jiaotong-Liverpool University, Dushu Lake Higher Education Town, Suzhou Industrial Park, China
| | - Tanja Waldmann
- Doerenkamp-Zbinden Chair for In Vitro Toxicology and Biomedicine, University of Konstanz, Germany
| | | | - Elisa Ferrando-May
- Bioimaging Center, Department of Biology, University of Konstanz, Germany
| | - Bernhard Lüscher
- Institute for Biochemistry and Molecular Biology, Medical School, RWTH Aachen University, Germany
| | - Ferdinand Kappes
- Institute for Biochemistry and Molecular Biology, Medical School, RWTH Aachen University, Germany
- Department of Biological Sciences, Xi'an Jiaotong-Liverpool University, Dushu Lake Higher Education Town, Suzhou Industrial Park, China
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22
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Guo H, Xu N, Prell M, Königs H, Hermanns-Sachweh B, Lüscher B, Kappes F. Bacterial Growth Inhibition Screen (BGIS): harnessing recombinant protein toxicity for rapid and unbiased interrogation of protein function. FEBS Lett 2021; 595:1422-1437. [PMID: 33704777 DOI: 10.1002/1873-3468.14072] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 02/28/2021] [Accepted: 03/02/2021] [Indexed: 12/13/2022]
Abstract
In two proof-of-concept studies, we established and validated the Bacterial Growth Inhibition Screen (BGIS), which explores recombinant protein toxicity in Escherichia coli as a largely overlooked and alternative means for basic characterization of functional eukaryotic protein domains. By applying BGIS, we identified an unrecognized RNA-interacting domain in the DEK oncoprotein (this study) and successfully combined BGIS with random mutagenesis as a screening tool for loss-of-function mutants of the DNA modulating domain of DEK [1]. Collectively, our findings shed new light on the phenomenon of recombinant protein toxicity in E. coli. Given the easy and rapid implementation and wide applicability, BGIS will extend the repertoire of basic methods for the identification, analysis and unbiased manipulation of proteins.
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Affiliation(s)
- Haihong Guo
- Institute for Biochemistry and Molecular Biology, Medical School, RWTH Aachen University, Germany
| | - Nengwei Xu
- Department of Biological Sciences, Suzhou Dushu Lake Science and Education Innovation District, Suzhou Industrial Park, Xi'an Jiaotong-Liverpool University, Suzhou, China
| | - Malte Prell
- Institute for Biochemistry and Molecular Biology, Medical School, RWTH Aachen University, Germany
| | - Hiltrud Königs
- Institute of Pathology, Medical School, RWTH Aachen University, Germany
| | | | - Bernhard Lüscher
- Institute for Biochemistry and Molecular Biology, Medical School, RWTH Aachen University, Germany
| | - Ferdinand Kappes
- Institute for Biochemistry and Molecular Biology, Medical School, RWTH Aachen University, Germany
- Department of Biological Sciences, Suzhou Dushu Lake Science and Education Innovation District, Suzhou Industrial Park, Xi'an Jiaotong-Liverpool University, Suzhou, China
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23
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Qi Y, Guo L, Liu Y, Zhao T, Liu X, Zhang Y. Sevoflurane Limits Glioma Progression by Regulating Cell Proliferation, Apoptosis, Migration, and Invasion via miR-218-5p/ DEK/β-Catenin Axis in Glioma. Cancer Manag Res 2021; 13:2057-2069. [PMID: 33664593 PMCID: PMC7924128 DOI: 10.2147/cmar.s265356] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 12/09/2020] [Indexed: 12/23/2022] Open
Abstract
Purpose Sevoflurane (SEV) is a frequently used volatile anesthetic in cancer surgery. Sevoflurane treatment has been shown to suppress the migration and invasion of several human cancer cells. However, the effect of sevoflurane on glioma remains largely unclear. Methods Glioma cell lines (U251 and U343) were treated by various concentrations of sevoflurane. 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT), flow cytometry assay, and transwell assay were performed to detect the cell viability, apoptosis, migration and invasion. Western blot assay was employed to detect the protein levels of β-catenin, c-Myc, CyclinD1, β-catenin, N-cadherin, vimentin, and DEK. Moreover, quantitative real-time polymerase chain reaction (qRT-PCR) was used to examine the expression level of miR-218-5p. The target interaction between miR-218-5p and DEK was predicted through bioinformatics analysis and verified by dual-luciferase reporter assay system. Results We found that sevoflurane aberrantly inhibited the abilities on viability, migration, invasion, EMT and β-catenin signaling and promoted cell apoptosis in U251 and U343 cells in a dose-dependent manner. MiR-218-5p strikingly suppressed the abilities of proliferation, migration, invasion rather than apoptosis and activation of β-catenin signaling. Sevoflurane could facilitate the miR-218-5p expression, and its suppressing effects on glioma cells were reversed by pre-treatment with miR-218-5p inhibitors or pcDNA3.1/DEK in vitro and in vivo. Silencing of miR-218-5p reverted sh-DEK and sevoflurane-induced repression on proliferation, migration, invasion, and β-catenin signaling, and promotion on apoptosis in the glioma cells. Conclusion Our data showed that sevoflurane inhibited the proliferation, migration, invasion, and enhanced the apoptosis in glioma cells through regulating miR-218-5p/DEK/β-catenin axis.
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Affiliation(s)
- Yingying Qi
- Department of Anesthesiology, Liaocheng People's Hospital, Liaocheng, Shandong, People's Republic of China
| | - Lina Guo
- Department of Anesthesiology, Liaocheng People's Hospital, Liaocheng, Shandong, People's Republic of China
| | - Yanchao Liu
- Department of Anesthesiology, Liaocheng People's Hospital, Liaocheng, Shandong, People's Republic of China
| | - Tonghang Zhao
- Department of Anesthesiology, Liaocheng People's Hospital, Liaocheng, Shandong, People's Republic of China
| | - Xianwen Liu
- Department of Anesthesiology, Liaocheng People's Hospital, Liaocheng, Shandong, People's Republic of China
| | - Yang Zhang
- Department of Anesthesiology, Liaocheng People's Hospital, Liaocheng, Shandong, People's Republic of China
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24
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Yi H, Duan H, Shi W, Liu Z, Liu Y. DEK overexpression is predictive of poor prognosis in esophageal squamous cell carcinoma. Arch Med Sci 2021; 17:135-141. [PMID: 33488866 PMCID: PMC7811301 DOI: 10.5114/aoms.2019.84210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 03/09/2019] [Indexed: 12/15/2022] Open
Abstract
INTRODUCTION The DEK gene encodes a nuclear phosphoprotein which is involved in multiple cell metabolic processes, such as DNA damage repair, mRNA splicing, modifying chromatin structure and transcription regulation. DEK has been shown to be overexpressed in various solid human tumors and associated with patient prognosis. In this study, our aim was to investigate DEK protein expression and its relationship with clinicopathological parameters and prognosis in esophageal squamous cell carcinoma (ESCC). MATERIAL AND METHODS Tissue samples were collected from 120 routinely diagnosed ESCC patients who underwent surgical resection at the Zhongshan Hospital, Xiamen University in the period from June 2011 to May 2013. The expression of DEK was determined by immunohistochemistry. RESULTS DEK protein was ubiquitously distributed in the nucleus of ESCC cells, and its positive rate (71.7%) was significantly higher in cancer samples than those of para-carcinoma (21.4%) or normal esophageal (13.9%) tissues (p < 0.001). Similarly, significantly more cells overexpressing DEK were found in ESCC tissues (57.5%) in comparison with para-carcinoma samples (11.4%) and normal esophageal mucosa (0%, p < 0.001). The DEK overexpression rate was significantly different between patients with different tumor-node-metastasis (TNM) stages and differentiation degrees (p < 0.001). ESCC cases with elevated DEK amounts showed reduced disease-free and 5-year survival rates compared with those expressing low DEK amounts (p < 0.001). DEK overexpression was also confirmed to independently predict prognosis in ESCC (HR = 4.121, 95% CI: 1.803-9.42, p = 0.001). CONCLUSIONS DEK expression is positively correlated with reduced survival in ESCC patients. DEK has potential to be an independent biomarker in predicting prognosis of ESCC patients.
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Affiliation(s)
- Huochun Yi
- Center of Clinical Laboratory, Zhongshan Hospital, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Hongbing Duan
- Department of Thoracic, Zhongshan Hospital, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Wensheng Shi
- Center of Clinical Laboratory, Zhongshan Hospital, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Zhengjin Liu
- Department of Pathology, Zhongshan Hospital, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Yali Liu
- Department of Thoracic, Zhongshan Hospital, School of Medicine, Xiamen University, Xiamen, Fujian, China
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25
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Song Y, Wang Z, Jiang J, Piao Y, Li L, Xu C, Piao H, Li L, Yan G. DEK-targeting aptamer DTA-64 attenuates bronchial EMT-mediated airway remodelling by suppressing TGF-β1/Smad, MAPK and PI3K signalling pathway in asthma. J Cell Mol Med 2020; 24:13739-13750. [PMID: 33124760 PMCID: PMC7754001 DOI: 10.1111/jcmm.15942] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/02/2020] [Accepted: 09/14/2020] [Indexed: 12/17/2022] Open
Abstract
This study is to investigate the inhibitory effects and mechanisms of DEK-targeting aptamer (DTA-64) on epithelial mesenchymaltransition (EMT)-mediated airway remodelling in mice and human bronchial epithelial cell line BEAS-2B. In the ovalbumin (OVA)-induced asthmatic mice, DTA-64 significantly reduced the infiltration of eosinophils and neutrophils in lung tissue, attenuated the airway resistance and the proliferation of goblet cells. In addition, DTA-64 reduced collagen deposition, transforming growth factor 1 (TGF-β1) level in BALF and IgE levels in serum, balanced Th1/Th2/Th17 ratio, and decreased mesenchymal proteins (vimentin and α-SMA), as well as weekend matrix metalloproteinases (MMP-2 and MMP-9) and NF-κB p65 activity. In the in vitro experiments, we used TGF-β1 to induce EMT in the human epithelial cell line BEAS-2B. DEK overexpression (ovDEK) or silencing (shDEK) up-regulated or down-regulated TGF-β1 expression, respectively, on the contrary, TGF-β1 exposure had no effect on DEK expression. Furthermore, ovDEK and TGF-β1 synergistically promoted EMT, whereas shDEK significantly reduced mesenchymal markers and increased epithelial markers, thus inhibiting EMT. Additionally, shDEK inhibited key proteins in TGF-β1-mediated signalling pathways, including Smad2/3, Smad4, p38 MAPK, ERK1/2, JNK and PI3K/AKT/mTOR. In conclusion, the effects of DTA-64 against EMT of asthmatic mice and BEAS-2B might partially be achieved through suppressing TGF-β1/Smad, MAPK and PI3K signalling pathways. DTA-64 may be a new therapeutic option for the management of airway remodelling in asthma patients.
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Affiliation(s)
- Yilan Song
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic DiseasesYanbian UniversityYanjiChina
- Department of Anatomy, Histology and EmbryologyYanbian University Medical CollegeYanjiChina
- Postdoctoral Programme, Research CenterAffiliated Hospital of Yanbian UniversityYanjiChina
| | - Zhiguang Wang
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic DiseasesYanbian UniversityYanjiChina
- Department of Respiratory MedicineAffiliated Hospital of Yanbian UniversityYanjiChina
| | - Jingzhi Jiang
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic DiseasesYanbian UniversityYanjiChina
- Department of Anatomy, Histology and EmbryologyYanbian University Medical CollegeYanjiChina
| | - Yihua Piao
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic DiseasesYanbian UniversityYanjiChina
- Department of Intensive Care UnitAffiliated Hospital of Yanbian UniversityYanjiChina
| | - Li Li
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic DiseasesYanbian UniversityYanjiChina
- Department of Anatomy, Histology and EmbryologyYanbian University Medical CollegeYanjiChina
| | - Chang Xu
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic DiseasesYanbian UniversityYanjiChina
- Department of Anatomy, Histology and EmbryologyYanbian University Medical CollegeYanjiChina
| | - Hongmei Piao
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic DiseasesYanbian UniversityYanjiChina
- Department of Respiratory MedicineAffiliated Hospital of Yanbian UniversityYanjiChina
| | - Liangchang Li
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic DiseasesYanbian UniversityYanjiChina
- Department of Anatomy, Histology and EmbryologyYanbian University Medical CollegeYanjiChina
| | - Guanghai Yan
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic DiseasesYanbian UniversityYanjiChina
- Department of Anatomy, Histology and EmbryologyYanbian University Medical CollegeYanjiChina
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26
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Cao J, Su J, An M, Yang Y, Zhang Y, Zuo J, Zhang N, Zhao Y. Novel DEK-Targeting Aptamer Delivered by a Hydrogel Microneedle Attenuates Collagen-Induced Arthritis. Mol Pharm 2020; 18:305-316. [PMID: 33253580 DOI: 10.1021/acs.molpharmaceut.0c00954] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
DEK protein is critical to the formation of neutrophil extracellular traps (NETs) in rheumatoid arthritis (RA). Blocking DEK using the aptamer DTA via articular injection has been shown to have robust anti-inflammatory efficacy in a previous study. However, DTA is prone to nuclease degradation and renal clearance in vivo. RA is a systemic disease that involves multiple joints, and local injection is impractical in clinical settings. In this study, DTA was modified with methoxy groups on all deoxyribose sugar units and inverted deoxythymidine on the 3' end (DTA4) to enhance its stability against nuclease. DTA4 is stable for 72 h in 90% mouse serum and maintains a high binding affinity to DEK. DTA4 effectively inhibits the formation of NETs and the migration of HUVECs in vitro. DTA4 was then modified with cholesterol on its 5' end to form DTA6. DTA6 dramatically reduces DEK expression in inflammatory RAW264.7 cells. A hydrogel microneedle (hMN) was then fabricated for the transdermal delivery of DTA6. The hMN maintains morphological integrity after absorbing the aptamer solution, effectively pierces the skin, and rapidly releases DTA6 into the dermis. The DTA6-loaded hMN significantly attenuates inflammation and protects joints from cartilage/bone erosion in collagen-induced arthritis (CIA) mice.
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Affiliation(s)
- Jian Cao
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450052, Henan, P. R. China
| | - Jingjing Su
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450052, Henan, P. R. China
| | - Mengchen An
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450052, Henan, P. R. China
| | - Yang Yang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450052, Henan, P. R. China
| | - Yi Zhang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450052, Henan, P. R. China
| | - Jing Zuo
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450052, Henan, P. R. China
| | - Nan Zhang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450052, Henan, P. R. China.,Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Henan Province, Zhengzhou 450001, Henan, P. R. China.,Key Laboratory of Advanced Pharmaceutical Technology, Ministry of Education of China, Henan Province, Zhengzhou 450001, Henan, P. R. China
| | - Yongxing Zhao
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450052, Henan, P. R. China.,Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Henan Province, Zhengzhou 450001, Henan, P. R. China.,Key Laboratory of Advanced Pharmaceutical Technology, Ministry of Education of China, Henan Province, Zhengzhou 450001, Henan, P. R. China
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27
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Wang J, Wen T, Li Z, Che X, Gong L, Jiao Z, Qu X, Liu Y. CD36 upregulates DEK transcription and promotes cell migration and invasion via GSK-3β/β-catenin-mediated epithelial-to-mesenchymal transition in gastric cancer. Aging (Albany NY) 2020; 13:1883-1897. [PMID: 33232276 PMCID: PMC7880392 DOI: 10.18632/aging.103985] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 08/08/2020] [Indexed: 12/15/2022]
Abstract
Evidence indicates that the lipid scavenger receptor CD36 has pro-metastatic functions in several cancers. Although CD36 expression correlates with an unfavorable prognosis in gastric cancer (GC), its specific contribution to disease onset, progression, and/or metastasis remains unclear. Using bioinformatics analyses, we ascertained that CD36 expression was increased in metastatic GC specimens in The Cancer Genome Atlas and Gene Expression Omnibus databases and correlated with poor prognosis. In addition, higher CD36 expression was associated with lymph node metastasis (p < 0.05) and poor prognosis (p = 0.030) in 79 Chinese GC patients. Basal CD36 expression levels correlated positively with migration, invasion, and expression of epithelial-to-mesenchymal transition (EMT) markers in GC cell lines, a relationship confirmed by knockdown and overexpression experiments. Importantly, analysis of gene expression changes in CD36-knockdown GC cells led us to identify the chromatin-associated protein DEK as a c-Myc target that mediates activation of the GSK-3β/β-catenin signaling pathway to trigger EMT. These findings further our understanding of the mechanisms governing metastatic dissemination of GC cells and suggest the therapeutic potential of strategies targeting CD36.
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Affiliation(s)
- Jin Wang
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang 110001, China
- Liaoning Province Clinical Research Center for Cancer, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Hospital of China Medical University, Shenyang 110001, China
| | - Ti Wen
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang 110001, China
- Liaoning Province Clinical Research Center for Cancer, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Hospital of China Medical University, Shenyang 110001, China
| | - Zhi Li
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang 110001, China
- Liaoning Province Clinical Research Center for Cancer, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Hospital of China Medical University, Shenyang 110001, China
| | - Xiaofang Che
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang 110001, China
- Liaoning Province Clinical Research Center for Cancer, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Hospital of China Medical University, Shenyang 110001, China
| | - Libao Gong
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang 110001, China
- Liaoning Province Clinical Research Center for Cancer, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Hospital of China Medical University, Shenyang 110001, China
| | - Zihan Jiao
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang 110001, China
- Liaoning Province Clinical Research Center for Cancer, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Hospital of China Medical University, Shenyang 110001, China
| | - Xiujuan Qu
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang 110001, China
- Liaoning Province Clinical Research Center for Cancer, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Hospital of China Medical University, Shenyang 110001, China
| | - Yunpeng Liu
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang 110001, China
- Liaoning Province Clinical Research Center for Cancer, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Hospital of China Medical University, Shenyang 110001, China
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Greene AN, Parks LG, Solomon MB, Privette Vinnedge LM. Loss of DEK Expression Induces Alzheimer's Disease Phenotypes in Differentiated SH-SY5Y Cells. Front Mol Neurosci 2020; 13:594319. [PMID: 33304240 PMCID: PMC7701170 DOI: 10.3389/fnmol.2020.594319] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 10/20/2020] [Indexed: 11/13/2022] Open
Abstract
Alzheimer’s disease (AD) is the most common cause of dementia and is characterized by the buildup of β-amyloid plaques and neurofibrillary Tau tangles. This leads to decreased synaptic efficacy, cell death, and, consequently, brain atrophy in patients. Behaviorally, this manifests as memory loss and confusion. Using a gene ontology analysis, we recently identified AD and other age-related dementias as candidate diseases associated with the loss of DEK expression. DEK is a nuclear phosphoprotein with roles in DNA repair, cellular proliferation, and inhibiting apoptosis. Work from our laboratory determined that DEK is highly expressed in the brain, particularly in regions relevant to learning and memory, including the hippocampus. Moreover, we have also determined that DEK is highly expressed in neurons. Consistent with our gene ontology analysis, we recently reported that cortical DEK protein levels are inversely proportional to dementia severity scores in elderly female patients. However, the functional role of DEK in neurons is unknown. Thus, we knocked down DEK in an in vitro neuronal model, differentiated SH-SY5Y cells, hypothesizing that DEK loss would result in cellular and molecular phenotypes consistent with AD. We found that DEK loss resulted in increased neuronal death by apoptosis (i.e., cleaved caspases 3 and 8), decreased β-catenin levels, disrupted neurite development, higher levels of total and phosphorylated Tau at Ser262, and protein aggregates. We have demonstrated that DEK loss in vitro recapitulates cellular and molecular phenotypes of AD pathology.
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Affiliation(s)
- Allie N Greene
- Neuroscience Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Lois G Parks
- Division of Oncology, Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Matia B Solomon
- Neuroscience Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Department of Psychology, University of Cincinnati, Cincinnati, OH, United States
| | - Lisa M Privette Vinnedge
- Division of Oncology, Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
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Abstract
BACKGROUND Circular RNA (circRNA) is a class of non-coding RNA that is vital for regulating gene expression and biological functions. Mounting studies demonstrate that circRNA is crucial for human cancer development. However, the role of circ_0000039 in gastric cancer (GC) remains uncertain. METHODS Normal human gastric tissues and GC tissue samples were collected, and quantitative real-time polymerase chain reaction (qRT-PCR) was employed to detect the expression levels of circ_0000039, miR-1292-5p, and DEK. GC cell lines with overexpression and low expression of circ_0000039 were constructed. Cell counting kit-8 (CCK-8), scratch healing and Transwell experiments were used to assess the function of circ_0000039 on the proliferation, migration and invasion of GC cells. Bioinformatics analysis and dual-luciferase reporter assays were employed to detect the targeting relationship between circ_0000039 and miR-1292-5p. RESULTS Circ_0000039 expression was up-regulated in GC tissues and cell lines, and it was significantly related with poor differentiation of tumor tissues. In addition, circ_0000039 overexpression enhanced the proliferation, migration and invasion of GC cells, while circ_0000039 depletion inhibited these malignant biological behaviors. In terms of mechanism, it was found that circ_0000039 promoted the proliferation and progression of GC cells by adsorbing miR-1292-5p and up-regulating the expression of DEK. CONCLUSION Circ_0000039 is a new oncogenic circRNA in GC, which regulates the miR-1292-5p/DEK axis to modulate the malignant biological behaviors of GC.
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Affiliation(s)
- Dengguo Fan
- Department of General Surgery, Caoxian People's Hospital, Heze, Shandong 274400, China.,Department of General Surgery, Caoxian People's Hospital, Heze, Shandong 274400, China
| | - Changjiang Wang
- Department of Gastroenterology, Caoxian People's Hospital, Heze, Shandong 274400, China.,Department of General Surgery, Caoxian People's Hospital, Heze, Shandong 274400, China
| | - Deyuan Wang
- Department of Oncology, Caoxian People's Hospital, Heze, Shandong 274400, China.,Department of General Surgery, Caoxian People's Hospital, Heze, Shandong 274400, China
| | - Ning Zhang
- Caoxian County Hospital of Shandong Province, Heze, Shandong 274400, China
| | - Tao Yi
- Department of Gastroenterology, Caoxian People's Hospital, Heze, Shandong 274400, China
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Li SH, Hou Y, Chen Z, Wu WR, Wu CX, Sun H. [Construction of RNA interference (RNAi) lentiviral expression vector of DEK gene and its effect on the biological behavior of liver cancer cells]. Zhonghua Gan Zang Bing Za Zhi 2020; 28:868-875. [PMID: 33105933 DOI: 10.3760/cma.j.issn.1007-3418.2020.03.000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To construct RNA interference (RNAi) lentiviral expression vector of DEK gene, and to explore its effect on the biological behavior of liver cancer cells. Methods: Double-stranded oligo DNAs were annealed and synthesized according to the interference sequence of DEK gene by RNAi technology. Small interfering RNA expression vector pLKO.1 was cloned after enzymatic digestion. The recombinant lentiviral pLKO.1-sh hDEK was constructed, and then the virus supernatant was collected, packed and infected by 293T cells. Real-time reverse transcription PCR (RT-PCR) and Western blot were used to detect DEK expression in human liver cancer cells Bel-7402, Hu-7, SmMC-7721 and HepG2, and DEK knockdown efficiency in each group of lentivirus-infected cells. Cell proliferation ability, cloning ability, apoptosis and migration ability were detected by cell counting kit-8 (CCK8), flow cytometry and scratch test, respectively. The t-test was used to compare the mean between the two groups, and one-way ANOVA was used to compare the multiple groups. Results: Enzymatic digestion and DNA sequencing results confirmed that the recombinant lentiviral vectors pLKO.1-sh hDEK1 and pLKO.1-sh hDEK3 were successfully constructed. RT-PCR and Western blot results showed that the expression of DEK in human liver cancer cells BEL-7402 and Huh7 cells was higher, and pLKO.1-sh hDEK3 was more effective in inhibiting the DEK gene expression (P < 0.05). Therefore, pLKO.1-sh hDEK3 was selected to infect BEL-7402 and Huh7 cells for subsequent functional experiments. CCK8 cell proliferation test result showed that the cell proliferation ability of BEL-7402 and Huh7 cells infected with recombinant lentivirus was weakened when compared with blank control and negative control group (P < 0.05). Apoptosis results showed that the apoptosis rate of knockdown group was higher than that of blank and the negative control group (P < 0.05). Cell scratch test result showed that the wound healing rate of knockdown group was lower than that of blank control and negative control group (P < 0.05), and the difference was statistically significant; however, there was no statistically significant difference between blank control and negative control group. Conclusion: Targeting DEK expression in silent liver cancer cells can inhibit the cell proliferation, migration ability, and induce apoptosis, which lays the foundation for further study of the role of DEK gene in liver cancer.
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Affiliation(s)
- S H Li
- Key Laboratory of Molecular Biology for Infectious Diseases, Institute for Viral Hepatitis, The second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Y Hou
- Department of Hematology,The first Hospital Affiliated To Army Medical University, Chongqing 400010, China
| | - Z Chen
- Department of Hematology,The first Hospital Affiliated To Army Medical University, Chongqing 400010, China
| | - W R Wu
- Department of Hematology,The first Hospital Affiliated To Army Medical University, Chongqing 400010, China
| | - C X Wu
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - H Sun
- Key Laboratory of Molecular Biology for Infectious Diseases, Institute for Viral Hepatitis, The second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
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Zhang W, Liao K, Liu D. MiR-138-5p Inhibits the Proliferation of Gastric Cancer Cells by Targeting DEK. Cancer Manag Res 2020; 12:8137-8147. [PMID: 32982411 PMCID: PMC7489953 DOI: 10.2147/cmar.s253777] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 06/25/2020] [Indexed: 12/15/2022] Open
Abstract
Background Increasing evidence suggests that microRNAs (miRNAs) play critical roles in cancer progression. Therefore, investigating the function of miRNAs that are aberrantly expressed in gastric cancer (GC) and characterizing the involved underlying mechanism are essential for the treatment of gastric cancer. MiR-138-5p was found to be down-regulated in multiple cancers, which acted as a tumor suppressor in cancer progression; however, whether and how miR-138-5p regulates the malignant behaviors of GC has not been fully understood. Methods The level of miR-138-5p in GC tissues and cell lines was detected by RT-qPCR. The effects of miR-138-5p on the growth of GC cells were evaluated by the in vitro Cell Counting Kit-8 (CCK-8) assay, cell apoptosis, cell cycle analysis, wound-healing assay, and in vivo xenograft mice model. The targets of miR-138-5p were predicted using the miRDB online tool, confirmed by luciferase report assay and Western blot. Results MiR-138-5p was frequently decreased in GC tissues and cell lines. Decreased expression of miR-138-5p was significantly associated with the lymph node metastasis of GC patients. Overexpression of miR-138-5p suppressed GC cell proliferation, migration, increased cell apoptosis as well as inhibited the tumor growth in vivo. DEK oncogene was predicted as a potential target of miR-138-5p. MiR-138-5p bound the 3'-UTR of DEK and inhibited the level of DEK in GC cells. Restoration of DEK abrogated miR-138-5p overexpression-mediated suppression of GC cell proliferation and cell cycle arrest. Conclusion Our results demonstrated the anti-cancer role of miR-138-5p in GC by targeting DEK, which suggested miR-138-5p as a potential therapeutic target for the treatment of patient with GC.
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Affiliation(s)
- Wei Zhang
- Department of General Surgery, People's Hospital of Yichun City, Yichun, Jiangxi 336000, People's Republic of China
| | - Kai Liao
- Department of General Surgery, People's Hospital of Yichun City, Yichun, Jiangxi 336000, People's Republic of China
| | - Dongning Liu
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province 336000, People's Republic of China
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Ishida K, Nakashima T, Shibata T, Hara A, Tomita H. Role of the DEK oncogene in the development of squamous cell carcinoma. Int J Clin Oncol 2020; 25:1563-1569. [PMID: 32656741 PMCID: PMC7441080 DOI: 10.1007/s10147-020-01735-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 06/21/2020] [Indexed: 01/21/2023]
Abstract
DEK is a highly conserved nuclear factor that plays an important role in the regulation of multiple cellular processes. DEK was discovered to be an oncogene as a fusion with NUP214 gene, which results in producing DEK-NUP214 proteins, in a subset of patients with acute myeloid leukemia. Subsequently, DEK overexpression was reported in many cancers, thus DEK itself is considered to be an oncoprotein. DEK has been reported to play important roles in the progression of early and late stage squamous cell carcinoma (SCC) and is useful for early diagnosis of the disease. These findings have made DEK an attractive therapeutic target, especially for human papillomavirus (HPV)-associated SCC. However, the mechanism of DEK in SCC remains unclear. In this review, we discuss human DEK oncogene-related SCC.
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Affiliation(s)
- Kazuhisa Ishida
- Department of Tumor Pathology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
- Department of Oral Maxillofacial Surgery, Gifu University Graduate School of Medicine, Gifu, 501-1194, Japan
| | - Takayuki Nakashima
- Department of Tumor Pathology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
- Department of Oral Maxillofacial Surgery, Gifu University Graduate School of Medicine, Gifu, 501-1194, Japan
| | - Toshiyuki Shibata
- Department of Oral Maxillofacial Surgery, Gifu University Graduate School of Medicine, Gifu, 501-1194, Japan
| | - Akira Hara
- Department of Tumor Pathology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Hiroyuki Tomita
- Department of Tumor Pathology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan.
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Miao J, Jing J, Shao Y, Sun H. MicroRNA-138 promotes neuroblastoma SH-SY5Y cell apoptosis by directly targeting DEK in Alzheimer's disease cell model. BMC Neurosci 2020; 21:33. [PMID: 32736520 PMCID: PMC7393818 DOI: 10.1186/s12868-020-00579-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 06/21/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Alzheimer's disease (AD) is a progressive neuro-degenerative disease with a major manifestation of dementia. MicroRNAs were reported to regulate the transcript expression in patients with Alzheimer's disease (AD). In this study, we investigated the roles of miR-138, a brain-enriched miRNA, in the AD cell model. METHODS The targets of miRNA-138 was predicted by bioinformatic analysis. The expression levels of DEK at both mRNA and protein levels were determined by qRT-PCR and Western blot, respectively. Luciferase assays were carried out to examine cell viabilities. Hoechst 33258 staining was used to detect cell apoptosis. RESULTS Our results demonstrated that the expression levels of miR-138 were increased in AD model, and DEK was a target of miR-138. Overexpression of miR-138 in SH-SY5Y cells obviously down-regulated the expression of DEK in SH-SY5Y cells, resulting in the inactivation of AKT and increased expression levels of proapoptotic caspase-3. MiR-138 mediated-suppression of DEK increased the susceptibility of cell apoptosis. CONCLUSIONS MicroRNA-138 promotes cell apoptosis of SH-SY5Y by targeting DEK in SH-SY5Y AD cell model. The regulation of miR-138 may contribute to AD via down-regulation of the DEK/AKT pathway.
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Affiliation(s)
- Jin Miao
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, People's Republic of China
- Laboratory Animal Center, Nantong University, Nantong, 226000, Jiangsu, People's Republic of China
| | - Jin Jing
- Laboratory Animal Center, Nantong University, Nantong, 226000, Jiangsu, People's Republic of China
| | - Yixiang Shao
- Laboratory Animal Center, Nantong University, Nantong, 226000, Jiangsu, People's Republic of China.
| | - Huaichang Sun
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, People's Republic of China.
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Pease NA, Shephard MS, Sertorio M, Waltz SE, Vinnedge LMP. DEK Expression in Breast Cancer Cells Leads to the Alternative Activation of Tumor Associated Macrophages. Cancers (Basel) 2020; 12:cancers12071936. [PMID: 32708944 PMCID: PMC7409092 DOI: 10.3390/cancers12071936] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/09/2020] [Accepted: 07/14/2020] [Indexed: 02/07/2023] Open
Abstract
Breast cancer (BC) is the second leading cause of cancer deaths among women. DEK is a known oncoprotein that is highly expressed in over 60% of breast cancers and is an independent marker of poor prognosis. However, the molecular mechanisms by which DEK promotes tumor progression are poorly understood. To identify novel oncogenic functions of DEK, we performed RNA-Seq analysis on isogenic Dek-knockout and complemented murine BC cells. Gene ontology analyses identified gene sets associated with immune system regulation and cytokine-mediated signaling and differential cytokine and chemokine expression was confirmed across Dek-proficient versus Dek-deficient cells. By exposing murine bone marrow-derived macrophages (BMDM) to tumor cell conditioned media (TCM) to mimic a tumor microenvironment, we showed that Dek-expressing breast cancer cells produce a cytokine milieu, including up-regulated Tslp and Ccl5 and down-regulated Cxcl1, Il-6, and GM-CSF, that drives the M2 polarization of macrophages. We validated this finding in primary murine mammary tumors and show that Dek expression in vivo is also associated with increased expression of M2 macrophage markers in murine tumors. Using TCGA data, we verified that DEK expression in primary human breast cancers correlates with the expression of several genes identified by RNA-Seq in our murine model and with M2 macrophage phenotypes. Together, our data demonstrate that by regulating the production of multiple secreted factors, DEK expression in BC cells creates a potentially immune suppressed tumor microenvironment, particularly by inducing M2 tumor associated macrophage (TAM) polarization.
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Affiliation(s)
- Nicholas A. Pease
- Division of Oncology, Cancer and Blood Diseases Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA; (N.A.P.); (M.S.S.); (M.S.)
- Molecular and Cellular Biology Program, Department of Bioengineering, University of Washington, Seattle, WA 98105, USA
| | - Miranda S. Shephard
- Division of Oncology, Cancer and Blood Diseases Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA; (N.A.P.); (M.S.S.); (M.S.)
| | - Mathieu Sertorio
- Division of Oncology, Cancer and Blood Diseases Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA; (N.A.P.); (M.S.S.); (M.S.)
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Susan E. Waltz
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA;
- Research Service, Cincinnati Veterans Affairs Medical Center, Cincinnati, OH 45267, USA
| | - Lisa M. Privette Vinnedge
- Division of Oncology, Cancer and Blood Diseases Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA; (N.A.P.); (M.S.S.); (M.S.)
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
- Correspondence: ; Tel.: +1-513-636-1155
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Yang MQ, Bai LL, Lei L, Zheng YW, Wang Z, Li ZH, Liu CC, Huang WJ, Xu HT. DEK promotes the proliferation and invasion of lung cancers and indicates poor prognosis in lung adenocarcinomas. Oncol Rep 2020; 43:1338-1348. [PMID: 32020224 DOI: 10.3892/or.2020.7488] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Accepted: 01/10/2020] [Indexed: 11/06/2022] Open
Abstract
DEK has been revealed to be overexpressed in many cancers and associated with cancer progression. The aim of the present study was to elucidate the role of DEK with a specific focus on its underlying mechanism in lung cancers. DEK expression in lung cancers and normal lung tissues and the correlations between DEK expression and clinicopathological parameters of lung cancers were investigated using the data from The Cancer Genome Atlas (TCGA). DEK expression was upregulated by DEK transfection or downregulated by DEK shRNA interference in A549 and H1299 cells. The effects of DEK on the Wnt signaling pathway and epithelial‑mesenchymal transition (EMT) were examined using western blotting. Proliferative and invasive abilities were observed in A549 and H1299 cells treated with DEK using an MTT assay, colony formation assay, and Transwell migration and invasion assays. The expression of DEK was higher in lung cancer tissues than that in normal lung tissues. DEK expression was positively correlated with the expression of epidermal growth factor receptor (EGFR) and KRAS in lung adenocarcinomas. High expression of DEK indicated poor prognosis in lung adenocarcinomas (P=0.018). Enhanced expression of DEK upregulated the levels of active‑β‑catenin and Wnt target genes, such as cyclin D1, c‑Myc and MMP7 and increased the proliferative and invasive abilities of lung cancer cells. Enhanced expression of DEK in A549 and H1299 cells also increased the levels of EGFR, KRAS, vimentin, Snail, and N‑cadherin, and decreased the level of E‑cadherin. The opposite results were obtained with knockdown of DEK expression. DEK was highly expressed in lung cancers and indicated poor prognosis in lung adenocarcinomas. DEK expression activated the Wnt signaling pathway and EMT process and promoted the proliferation and invasion of lung cancers.
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Affiliation(s)
- Mai-Qing Yang
- Department of Pathology, The First Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Lin-Lin Bai
- Department of Pathology, Shenyang 242 Hospital, Shenyang, Liaoning 110001, P.R. China
| | - Lei Lei
- Department of Pathology, The First Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Yi-Wen Zheng
- Department of Pathology, The First Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Zhao Wang
- Department of Pathology, The First Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Zhi-Han Li
- Department of Pathology, The First Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Chen-Chen Liu
- Department of Pathology, The First Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Wen-Jing Huang
- Department of Pathology, The First Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Hong-Tao Xu
- Department of Pathology, The First Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, Liaoning 110001, P.R. China
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Zhang H, Yan M, Deng R, Song F, Jiang M. The silencing of DEK reduced disease resistance against Botrytis cinerea and Pseudomonas syringae pv. tomato DC3000 based on virus-induced gene silencing analysis in tomato. Gene 2020; 727:144245. [PMID: 31715302 DOI: 10.1016/j.gene.2019.144245] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 10/29/2019] [Accepted: 10/29/2019] [Indexed: 10/25/2022]
Abstract
DEK involves in the modulation of cell proliferation, differentiation, apoptosis, migration and cell senescence. However, direct genetic evidence proving the functions of DEK in disease resistance against pathogens is still deficient. In the present study, four DEKs were identified in tomato genome and their roles in disease resistance in tomato were analyzed. The expression levels of DEKs were differently induced by Botrytis cinerea, Pseudomonas syringae pv. tomato (Pst) DC3000 and defense-related signaling molecules (such as jasmonic acid, aethylene precursor and salicylic acid). The DEKs' silencing by virus induced gene silencing led to decreased resistance against B. cinerea or Pst DC3000. The underlying mechanisms may be through the upregulation of the accumulation of reactive oxygen species (ROS) and the changed expression levels of defense-related genes by pathogen inoculation. These results indicate that DEKs involve in disease resistance against different pathogens and thus broaden the knowledge of DEK genes' function in tomato.
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Affiliation(s)
- Huijuan Zhang
- Collegue of Life Science, Taizhou University, Taizhou, China
| | - Mengjiao Yan
- Collegue of Life Science, Taizhou University, Taizhou, China
| | - Rong Deng
- Collegue of Life Science, Taizhou University, Taizhou, China
| | - Fengming Song
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Ming Jiang
- Collegue of Life Science, Taizhou University, Taizhou, China.
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Lee KF, Tsai MM, Tsai CY, Huang CG, Ou YH, Hsieh CC, Hsieh HL, Wang CS, Lin KH. DEK Is a Potential Biomarker Associated with Malignant Phenotype in Gastric Cancer Tissues and Plasma. Int J Mol Sci 2019; 20:E5689. [PMID: 31766266 PMCID: PMC6888682 DOI: 10.3390/ijms20225689] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 11/08/2019] [Accepted: 11/09/2019] [Indexed: 12/13/2022] Open
Abstract
Gastric cancer (GC) is the second most widespread cause of cancer-related mortality worldwide. The discovery of novel biomarkers of oncoproteins can facilitate the development of therapeutic strategies for GC treatment. In this study, we identified novel biomarkers by integrating isobaric tags for relative and absolute quantitation (iTRAQ), a human plasma proteome database, and public Oncomine datasets to search for aberrantly expressed oncogene-associated proteins in GC tissues and plasma. One of the most significantly upregulated biomarkers, DEK, was selected and its expression validated. Our immunohistochemistry (IHC) (n = 92) and quantitative real-time polymerase chain reaction (qRT-PCR) (n = 72) analyses disclosed a marked increase in DEK expression in tumor tissue, compared with paired nontumor mucosa. Importantly, significantly higher preoperative plasma DEK levels were detected in GC patients than in healthy controls via enzyme-linked immunosorbent assay (ELISA). In clinicopathological analysis, higher expression of DEK in both tissue and plasma was significantly associated with advanced stage and poorer survival outcomes of GC patients. Data from receiver operating characteristic (ROC) curve analysis disclosed a better diagnostic accuracy of plasma DEK than carcinoembryonic antigen (CEA), carbohydrate antigen 19.9 (CA 19.9), and C-reactive protein (CRP), highlighting its potential as an effective plasma biomarker for GC. Plasma DEK is also more sensitive in tumor detection than the other three biomarkers. Knockdown of DEK resulted in inhibition of GC cell migration via a mechanism involving modulation of matrix metalloproteinase MMP-2/MMP-9 level and vice versa. Our results collectively support plasma DEK as a useful biomarker for making diagnosis and prognosis of GC patients.
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Affiliation(s)
- Kam-Fai Lee
- Department of Pathology, Chang Gung Memorial Hospital, Chiayi 613, Taiwan;
| | - Ming-Ming Tsai
- Department of Nursing, Division of Basic Medical Sciences, Chang-Gung University of Science and Technology, Taoyuan 333, Taiwan; (M.-M.T.); (H.-L.H.)
- Research Center for Chinese Herbal Medicine, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan
- Department of General Surgery, Chang Gung Memorial Hospital, Chia-yi 613, Taiwan;
| | - Chung-Ying Tsai
- Department of Biochemistry, College of Medicine, Chang-Gung University, Taoyuan 333, Taiwan; (C.-Y.T.); (Y.-H.O.)
- Kidney Research Center and Department of Nephrology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Chung-Guei Huang
- Department of Medical Biotechnology and Laboratory Science, and Graduate Institute of Biomedical Science, Chang Gung University, Taoyuan 333, Taiwan;
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Linkou, Taoyuan 333, Taiwan
| | - Yu-Hsiang Ou
- Department of Biochemistry, College of Medicine, Chang-Gung University, Taoyuan 333, Taiwan; (C.-Y.T.); (Y.-H.O.)
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Linkou, Taoyuan 333, Taiwan
| | - Ching-Chuan Hsieh
- Department of General Surgery, Chang Gung Memorial Hospital, Chia-yi 613, Taiwan;
| | - Hsi-Lung Hsieh
- Department of Nursing, Division of Basic Medical Sciences, Chang-Gung University of Science and Technology, Taoyuan 333, Taiwan; (M.-M.T.); (H.-L.H.)
- Research Center for Chinese Herbal Medicine, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan
- Department of Neurology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Chia-Siu Wang
- Department of General Surgery, Chang Gung Memorial Hospital, Chia-yi 613, Taiwan;
| | - Kwang-Huei Lin
- Research Center for Chinese Herbal Medicine, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan
- Department of Biochemistry, College of Medicine, Chang-Gung University, Taoyuan 333, Taiwan; (C.-Y.T.); (Y.-H.O.)
- Liver Research Center, Chang Gung Memorial Hospital, Linkou, Taoyuan 333, Taiwan
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Qian Z, Yang J, Liu H, Yin Y, Hou L, Hu H. The miR-1204 regulates apoptosis in NSCLC cells by targeting DEK. Folia Histochem Cytobiol 2019; 57:64-73. [PMID: 31246264 DOI: 10.5603/fhc.a2019.0009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 05/02/2019] [Accepted: 05/17/2019] [Indexed: 11/25/2022] Open
Abstract
INTRODUCTION This study endeavors to analyze the effects of miR-1204 on the expression of DEK oncogene in non-small cell lung cancer (NSCLC) cell lines and to study the molecular mechanisms of these effects. MATERIAL AND METHODS The miR-1204 mimics and inhibitors were transfected into the (A549 and SPC) NSCLC cells. Then the mRNA levels, cell viability, apoptosis rate, morphology and caspase activity were determined. The expression of apoptosis-related proteins Bcl-2 and Bax was also analyzed. RESULTS In NSCLC cell lines (A549 and SPC), DEK mRNA levels were down-regulated in miR-1204 overex-pression group. In miR-1204 inhibition group, the expression of DEK mRNA showed an opposite trend. The overexpression of miR-1204 increases the apoptosis rate in NSCLC cells. The Bcl-2 levels in the miR-1204 over-expression group were decreased, while the Bax level was increased. In the miR-1204 inhibition group, expression of Bcl-2 and Bax showed opposite trends. Cell staining revealed cell's morphological changes; the apoptosis in the miR-1204 overexpression group revealed significant morphological features, such as brighter nuclei and nu-clear condensation. Results indicated a typical characteristic of apoptosis in the miR-1204 overexpression group. Caspase-9 and Caspase-3 were involved in the apoptosis pathway, which was mediated by miR-1204 and DEK. CONCLUSIONS The miR-1204 induces apoptosis of NSCLC cells by inhibiting the expression of DEK. The mech-anism of apoptosis involves down-regulation of Bcl-2 and up-regulation of Bax expression. Moreover, the apoptosis was mediated by mitochondria-related caspase 9/3 pathway.
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Affiliation(s)
- Zhen Qian
- College of Life Sciences and Bio-engineering, Beijing Jiaotong University, Beijing 100044, China
| | - Juan Yang
- College of Life Sciences and Bio-engineering, Beijing Jiaotong University, Beijing 100044, China
| | - Huanhuan Liu
- College of Life Sciences and Bio-engineering, Beijing Jiaotong University, Beijing 100044, China
| | - Yue Yin
- College of Life Sciences and Bio-engineering, Beijing Jiaotong University, Beijing 100044, China
| | - Lingling Hou
- College of Life Sciences and Bio-engineering, Beijing Jiaotong University, Beijing 100044, China
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Jia WH, Li AQ, Feng JY, Ding YF, Ye S, Yang JS, Yang WJ. DEK terminates diapause by activation of quiescent cells in the crustacean Artemia. Biochem J 2019; 476:1753-69. [PMID: 31189566 DOI: 10.1042/BCJ20190169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 06/11/2019] [Accepted: 06/12/2019] [Indexed: 12/24/2022]
Abstract
To cope with harsh environments, the Artemia shrimp produces gastrula embryos in diapause, a state of obligate dormancy, having cellular quiescence and suppressed metabolism. The mechanism behind these cellular events remains largely unknown. Here, we study the regulation of cell quiescence using diapause embryos of Artemia We found that Artemia DEK (Ar-DEK), a nuclear factor protein, was down-regulated in the quiescent cells of diapause embryos and enriched in the activated cells of post-diapause embryos. Knockdown of Ar-DEK induced the production of diapause embryos whereas the control Artemia released free-swimming nuaplii. Our results indicate that Ar-DEK correlated with the termination of cellular quiescence via the increase in euchromatin and decrease in heterochromatin. The phenomena of quiescence have many implications beyond shrimp ecology. In cancer cells, for example, knockdown of DEK also induced a short period of cellular quiescence and increased resistance to environmental stress in MCF-7 and MKN45 cancer cell lines. Analysis of RNA sequences in Artemia and in MCF-7 revealed that the Wnt and AURKA signaling pathways were all down-regulated and the p53 signaling pathway was up-regulated upon inhibition of DEK expression. Our results provide insight into the functions of Ar-DEK in the activation of cellular quiescence during diapause formation in Artemia.
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Zhao T, Qiu B, Zhou S, Ding G, Cao L, Wu Z. Expression of DEK in pancreatic cancer and its correlation with clinicopathological features and prognosis. J Cancer 2019; 10:911-917. [PMID: 30854097 PMCID: PMC6400821 DOI: 10.7150/jca.27405] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 01/09/2019] [Indexed: 01/24/2023] Open
Abstract
Background: The oncogene DEK, which was originally identified as part of the protein product of the DEK-CAN fusion oncogene, has been shown to promote tumorigenesis in a variety of cancer cell types. However, little is known about the expression and role of DEK in pancreatic ductal adenocarcinoma (PDAC), which is one of the most refractory malignant tumors worldwide and has poor prognosis. Our study aimed to understand the role of DEK in the development and progression of pancreatic adenocarcinoma. Materials and methods: We used western blotting and immunohistochemistry to examine the expression of DEK in pancreatic adenocarcinoma cells and tissues. We analyzed the correlation between DEK expression and clinicopathological characteristics and prognosis in 163 pancreatic adenocarcinoma patients. Results: Protein levels of DEK in pancreatic adenocarcinoma tissues (76/136, 55.9%) were significantly higher than those in adjacent non-tumor tissues (16.2%, 22/136). A high expression level of DEK was associated with poor prognosis (P<0.001).In addition, the combination of CA19-9 and DEK expression (P<0.001) was a better prognostic indicator than CA19-9 expression alone (P=0.012). Conclusions: DEK may play a significant role as a valuable biomarker in the development and progression of pancreatic adenocarcinoma. The combination of DEK and CA19-9 improves the prognostic prediction in patients with pancreatic adenocarcinoma.
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Affiliation(s)
- Ting Zhao
- Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Bijun Qiu
- Jiangdu People's Hospital Yangzhou, Yangzhou 225000, China
| | - Senhao Zhou
- Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Guoping Ding
- Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Liping Cao
- Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Zhengrong Wu
- Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China
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Abstract
NUP214 is a component of the nuclear pore complex (NPC) with a key role in protein and mRNA nuclear export. Chromosomal translocations involving the NUP214 locus are recurrent in acute leukemia and frequently fuse the C-terminal region of NUP214 with SET and DEK, two chromatin remodeling proteins with roles in transcription regulation. SET-NUP214 and DEK-NUP214 fusion proteins disrupt protein nuclear export by inhibition of the nuclear export receptor CRM1, which results in the aberrant accumulation of CRM1 protein cargoes in the nucleus. SET-NUP214 is primarily associated with acute lymphoblastic leukemia (ALL), whereas DEK-NUP214 exclusively results in acute myeloid leukemia (AML), indicating different leukemogenic driver mechanisms. Secondary mutations in leukemic blasts may contribute to the different leukemia outcomes. Additional layers of complexity arise from the respective functions of SET and DEK in transcription regulation and chromatin remodeling, which may drive malignant hematopoietic transformation more towards ALL or AML. Another, less frequent fusion protein involving the C terminus of NUP214 results in the sequestosome-1 (SQSTM1)-NUP214 chimera, which was detected in ALL. SQSTM1 is a ubiquitin-binding protein required for proper autophagy induction, linking the NUP214 fusion protein to yet another cellular mechanism. The scope of this review is to summarize the general features of NUP214-related leukemia and discuss how distinct chromosomal translocation partners can influence the cellular effects of NUP214 fusion proteins in leukemia.
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Affiliation(s)
- Adélia Mendes
- Institute of Biology and Molecular Medicine, Université Libre de Bruxelles, 6041 Charleroi, Belgium.
| | - Birthe Fahrenkrog
- Institute of Biology and Molecular Medicine, Université Libre de Bruxelles, 6041 Charleroi, Belgium.
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Hui W, Ma X, Zan Y, Song L, Zhang S, Dong L. MicroRNA-1292-5p inhibits cell growth, migration and invasion of gastric carcinoma by targeting DEK. Am J Cancer Res 2018; 8:1228-1238. [PMID: 30094096 PMCID: PMC6079159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Accepted: 02/11/2018] [Indexed: 06/08/2023] Open
Abstract
Gastric cancer ranks as the third most lethal cancer worldwide. Although many efforts have been made to identify novel markers for early diagnosis and effective drugs for the treatment of gastric cancer, the outcome is still poor due to delayed diagnosis and lack of therapeutic options. MicroRNAs (miRNAs) play crucial roles during tumorigenesis, and several miRNAs were found to be critical for gastric cancer development, offering promise as therapeutic targets. The results of this study indicate that a novel miRNA, miR-1292-5p, is downregulated both in gastric carcinoma in vivo and in gastric cancer cell lines in vitro. In addition, we showed that attenuation of miR-1292-5p inhibited the growth, migration and invasion of the AGS and SGC-7901 gastric cancer cell lines. Importantly, our results demonstrate that the proto-oncogenic protein DEK is a direct target of miR-1292-5p in gastric carcinoma. Our results therefore demonstrate a tumor suppressor role of miR-1292-5p in gastric carcinoma and hint at the diagnostic and therapeutic potential of the miR-1292-5p/DEK pathway in gastric cancer.
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Affiliation(s)
- Wentao Hui
- Department of Medical Oncology, The Second Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710004, Shaanxi, China
| | - Xiaobin Ma
- Department of Medical Oncology, The Second Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710004, Shaanxi, China
| | - Ying Zan
- Department of Medical Oncology, The Second Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710004, Shaanxi, China
| | - Lingqin Song
- Department of Medical Oncology, The Second Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710004, Shaanxi, China
| | - Shuqun Zhang
- Department of Medical Oncology, The Second Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710004, Shaanxi, China
| | - Lei Dong
- Department of Gastroenterology, The Second Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710004, Shaanxi, China
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Selvan LDN, Danda R, Madugundu AK, Puttamallesh VN, Sathe GJ, Krishnan UM, Khetan V, Rishi P, Prasad TSK, Pandey A, Krishnakumar S, Gowda H, Elchuri SV. Phosphoproteomics of Retinoblastoma: A Pilot Study Identifies Aberrant Kinases. Molecules 2018; 23:molecules23061454. [PMID: 29914080 PMCID: PMC6100359 DOI: 10.3390/molecules23061454] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 05/31/2018] [Accepted: 06/07/2018] [Indexed: 01/09/2023] Open
Abstract
Retinoblastoma is a malignant tumour of the retina which most often occurs in children. Earlier studies on retinoblastoma have concentrated on the identification of key players in the disease and have not provided information on activated/inhibited signalling pathways. The dysregulation of protein phosphorylation in cancer provides clues about the affected signalling cascades in cancer. Phosphoproteomics is an ideal tool for the study of phosphorylation changes in proteins. Hence, global phosphoproteomics of retinoblastoma (RB) was carried out to identify signalling events associated with this cancer. Over 350 proteins showed differential phosphorylation in RB compared to control retina. Our study identified stress response proteins to be hyperphosphorylated in RB which included H2A histone family member X (H2AFX) and sirtuin 1. In particular, Ser140 of H2AFX also known as gamma-H2AX was found to be hyperphosphorylated in retinoblastoma, which indicated the activation of DNA damage response pathways. We also observed the activation of anti-apoptosis in retinoblastoma compared to control. These observations showed the activation of survival pathways in retinoblastoma. The identification of hyperphosphorylated protein kinases including Bromodomain containing 4 (BRD4), Lysine deficient protein kinase 1 (WNK1), and Cyclin-dependent kinase 1 (CDK1) in RB opens new avenues for the treatment of RB. These kinases can be considered as probable therapeutic targets for RB, as small-molecule inhibitors for some of these kinases are already in clinical trials for the treatment other cancers.
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Affiliation(s)
| | - Ravikanth Danda
- L&T Opthalmic Pathology, Vision Research Foundation, Sankara Nethralaya, Chennai, Tamil Nadu 600 006, India.
- Centre for Nanotechnology and Advanced Biomaterials, Shanmugha Arts, Science, Technology and Research Academy University, Tanjore, Tamil Nadu 613 401, India.
| | - Anil K Madugundu
- Institute of Bioinformatics, International Technology Park, Bangalore, Karnataka 560 066, India.
| | - Vinuth N Puttamallesh
- Institute of Bioinformatics, International Technology Park, Bangalore, Karnataka 560 066, India.
| | - Gajanan J Sathe
- Institute of Bioinformatics, International Technology Park, Bangalore, Karnataka 560 066, India.
- Manipal Academy of Higher Education (MAHE), Manipal, Karnataka 576 104, India.
| | - Uma Maheswari Krishnan
- Centre for Nanotechnology and Advanced Biomaterials, Shanmugha Arts, Science, Technology and Research Academy University, Tanjore, Tamil Nadu 613 401, India.
| | - Vikas Khetan
- Shri Bhagwan Mahavir Vitreoretinal Services, Sankara Nethralaya, Chennai, Tamil Nadu 600 006, India.
| | - Pukhraj Rishi
- Shri Bhagwan Mahavir Vitreoretinal Services, Sankara Nethralaya, Chennai, Tamil Nadu 600 006, India.
| | - Thottethodi Subrahmanya Keshava Prasad
- Institute of Bioinformatics, International Technology Park, Bangalore, Karnataka 560 066, India.
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, Karnataka 575 108, India.
| | - Akhilesh Pandey
- Institute of Bioinformatics, International Technology Park, Bangalore, Karnataka 560 066, India.
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
- Departments of Biological Chemistry, Pathology and Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
| | - Subramanian Krishnakumar
- L&T Opthalmic Pathology, Vision Research Foundation, Sankara Nethralaya, Chennai, Tamil Nadu 600 006, India.
| | - Harsha Gowda
- Institute of Bioinformatics, International Technology Park, Bangalore, Karnataka 560 066, India.
| | - Sailaja V Elchuri
- Department of Nanotechnology, Vision Research Foundation, Sankara Nethralaya, Chennai, Tamil Nadu 600 006, India.
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Zhou QC, Deng XF, Yang J, Jiang H, Qiao MX, Liu HH, Qian Z, Hou LL, Hu HG. Oncogene DEK is highly expressed in lung cancerous tissues and positively regulates cell proliferation as well as invasion. Oncol Lett 2018; 15:8573-8581. [PMID: 29844811 PMCID: PMC5958825 DOI: 10.3892/ol.2018.8436] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 03/16/2018] [Indexed: 11/06/2022] Open
Abstract
DEK is a protein ubiquitously expressed in multicellular organisms as well as certain unicellular organisms. It is associated with the regulation of cell proliferation, differentiation, migration, apoptosis, senescence, self-renewal and DNA repairing. In tumor cells it is associated with the carcinogenesis process, however there have been few previous studies into the expression of DEK in lung cancer. In the present study the expression level of DEK mRNA and protein was detected in lung cancer tissues and non-cancerous counterparts by performing reverse transcription-quantitative polymerase chain reaction and immunohistochemical staining. It was revealed that the expression of DEK was increased in lung cancer tissues compared with normal tissue. Knock-down and over-expression of DEK in A549 cells were performed to determine the role of DEK in tumor formation. An MTT assay, colony formation assay and Matrigel invasion assay demonstrated that DEK positively regulated cell proliferation and invasion. These results suggest that DEK is highly expressed in lung cancer tissues and positively regulates cell proliferation and invasion.
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Affiliation(s)
- Qian-Cheng Zhou
- College of Life Sciences and Bioengineering, School of Science, Beijing Jiaotong University, Beijing 100044, P.R. China
| | - Xue-Feng Deng
- Department of Cardio-Thoracic Surgery, Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, P.R. China
| | - Juan Yang
- College of Life Sciences and Bioengineering, School of Science, Beijing Jiaotong University, Beijing 100044, P.R. China
| | - Hong Jiang
- College of Life Sciences and Bioengineering, School of Science, Beijing Jiaotong University, Beijing 100044, P.R. China
| | - Ming-Xu Qiao
- College of Life Sciences and Bioengineering, School of Science, Beijing Jiaotong University, Beijing 100044, P.R. China
| | - Huan-Huan Liu
- College of Life Sciences and Bioengineering, School of Science, Beijing Jiaotong University, Beijing 100044, P.R. China
| | - Zhen Qian
- College of Life Sciences and Bioengineering, School of Science, Beijing Jiaotong University, Beijing 100044, P.R. China
| | - Ling-Ling Hou
- College of Life Sciences and Bioengineering, School of Science, Beijing Jiaotong University, Beijing 100044, P.R. China
| | - Hong-Gang Hu
- College of Life Sciences and Bioengineering, School of Science, Beijing Jiaotong University, Beijing 100044, P.R. China
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Martinez-Useros J, Moreno I, Fernandez-Aceñero MJ, Rodriguez-Remirez M, Borrero-Palacios A, Cebrian A, Gomez del Pulgar T, del Puerto-Nevado L, Li W, Puime-Otin A, Perez N, Soengas MS, Garcia-Foncillas J. The potential predictive value of DEK expression for neoadjuvant chemoradiotherapy response in locally advanced rectal cancer. BMC Cancer 2018; 18:144. [PMID: 29409457 PMCID: PMC5801838 DOI: 10.1186/s12885-018-4048-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 01/24/2018] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Limited data are available regarding the ability of biomarkers to predict complete pathological response to neoadjuvant chemoradiotherapy in locally advanced rectal cancer. Complete response translates to better patient survival. DEK is a transcription factor involved not only in development and progression of different types of cancer, but is also associated with treatment response. This study aims to analyze the role of DEK in complete pathological response following chemoradiotherapy for locally advanced rectal cancer. METHODS Pre-treated tumour samples from 74 locally advanced rectal-cancer patients who received chemoradiation therapy prior to total mesorectal excision were recruited for construction of a tissue microarray. DEK immunoreactivity from all samples was quantified by immunohistochemistry. Then, association between positive stained tumour cells and pathologic response to neoadjuvant treatment was measured to determine optimal predictive power. RESULTS DEK expression was limited to tumour cells located in the rectum. Interestingly, high percentage of tumour cells with DEK positiveness was statistically associated with complete pathological response to neoadjuvant treatment based on radiotherapy and fluoropyrimidine-based chemotherapy and a marked trend toward significance between DEK positiveness and absence of treatment toxicity. Further analysis revealed an association between DEK and the pro-apoptotic factor P38 in the pre-treated rectal cancer biopsies. CONCLUSIONS These data suggest DEK as a potential biomarker of complete pathological response to treatment in locally advanced rectal cancer.
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Affiliation(s)
- J. Martinez-Useros
- Translational Oncology Division, OncoHealth Institute, Health Research Institute - University Hospital “Fundación Jiménez Díaz”-UAM, Av. Reyes Católicos 2, 28040 Madrid, Spain
| | - I. Moreno
- Translational Oncology Division, OncoHealth Institute, Health Research Institute - University Hospital “Fundación Jiménez Díaz”-UAM, Av. Reyes Católicos 2, 28040 Madrid, Spain
| | | | - M. Rodriguez-Remirez
- Translational Oncology Division, OncoHealth Institute, Health Research Institute - University Hospital “Fundación Jiménez Díaz”-UAM, Av. Reyes Católicos 2, 28040 Madrid, Spain
| | - A. Borrero-Palacios
- Translational Oncology Division, OncoHealth Institute, Health Research Institute - University Hospital “Fundación Jiménez Díaz”-UAM, Av. Reyes Católicos 2, 28040 Madrid, Spain
| | - A. Cebrian
- Translational Oncology Division, OncoHealth Institute, Health Research Institute - University Hospital “Fundación Jiménez Díaz”-UAM, Av. Reyes Católicos 2, 28040 Madrid, Spain
| | - T. Gomez del Pulgar
- Translational Oncology Division, OncoHealth Institute, Health Research Institute - University Hospital “Fundación Jiménez Díaz”-UAM, Av. Reyes Católicos 2, 28040 Madrid, Spain
| | - L. del Puerto-Nevado
- Translational Oncology Division, OncoHealth Institute, Health Research Institute - University Hospital “Fundación Jiménez Díaz”-UAM, Av. Reyes Católicos 2, 28040 Madrid, Spain
| | - W. Li
- Translational Oncology Division, OncoHealth Institute, Health Research Institute - University Hospital “Fundación Jiménez Díaz”-UAM, Av. Reyes Católicos 2, 28040 Madrid, Spain
| | - A. Puime-Otin
- Department of Pathology, University Hospital “Fundación Jiménez Díaz”-UAM, Madrid, Spain
| | - N. Perez
- Department of Pathology, University Hospital “Fundación Jiménez Díaz”-UAM, Madrid, Spain
| | - M. S. Soengas
- Melanoma Research Group, Spanish National Cancer Research Centre, Madrid, Spain
| | - J. Garcia-Foncillas
- Translational Oncology Division, OncoHealth Institute, Health Research Institute - University Hospital “Fundación Jiménez Díaz”-UAM, Av. Reyes Católicos 2, 28040 Madrid, Spain
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Yang Y, Wu M, Geng Y, Liu X, Yang Y, Chen X, Ding Y, He J, Wang Y, Xie L. Roles of DEK in the endometrium of mice in early pregnancy. Gene 2018; 642:261-7. [PMID: 29109007 DOI: 10.1016/j.gene.2017.11.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 10/12/2017] [Accepted: 11/02/2017] [Indexed: 12/11/2022]
Abstract
Embryo implantation is a complex process requiring reciprocal interactions between implantation-competent blastocysts and receptive uteri. Accumulating evidence from Digital Protein Expression Profiling indicates that DEK protein expression at implantation sites (ISs) was much higher than that at inter-implantation sites (IISs). In this study, we investigated the expression of DEK in mouse uterus by immunohistochemistry (IHC), Western blotting. We explored its function during decidualization of uterine stromal cells by inhibiting the expression of DEK. In further study of mechanism, the cell proliferation, apoptosis and DNA damage were detected after inhibiting DEK during decidualization of stromal cells. The results suggest that DEK participates in decidualization of stromal cells through mediating cell proliferation, apoptosis and DNA repair.
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Smith EA, Krumpelbeck EF, Jegga AG, Greis KD, Ali AM, Meetei AR, Wells SI. The nuclear DEK interactome supports multi-functionality. Proteins 2018; 86:88-97. [PMID: 29082557 PMCID: PMC5730476 DOI: 10.1002/prot.25411] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 10/20/2017] [Accepted: 10/27/2017] [Indexed: 01/01/2023]
Abstract
DEK is an oncoprotein that is overexpressed in many forms of cancer and participates in numerous cellular pathways. Of these different pathways, relevant interacting partners and functions of DEK are well described in regard to the regulation of chromatin structure, epigenetic marks, and transcription. Most of this understanding was derived by investigating DNA-binding and chromatin processing capabilities of the oncoprotein. To facilitate the generation of mechanism-driven hypotheses regarding DEK activities in underexplored areas, we have developed the first DEK interactome model using tandem-affinity purification and mass spectrometry. With this approach, we identify IMPDH2, DDX21, and RPL7a as novel DEK binding partners, hinting at new roles for the oncogene in de novo nucleotide biosynthesis and ribosome formation. Additionally, a hydroxyurea-specific interaction with replication protein A (RPA) was observed, suggesting that a DEK-RPA complex may form in response to DNA replication fork stalling. Taken together, these findings highlight diverse activities for DEK across cellular pathways and support a model wherein this molecule performs a plethora of functions.
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Affiliation(s)
- Eric A. Smith
- Department of Oncology; Cincinnati Children’s Hospital Medical Center; Cincinnati, OH, 45219; USA
| | - Eric F. Krumpelbeck
- Department of Oncology; Cincinnati Children’s Hospital Medical Center; Cincinnati, OH, 45219; USA
| | - Anil G. Jegga
- Division of Biomedical Informatics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, 45219, USA
| | - Kenneth D. Greis
- Department of Cancer Biology, University of Cincinnati College of Medicine; Cincinnati, OH 45219, USA
| | - Abdullah M. Ali
- Department of Oncology; Cincinnati Children’s Hospital Medical Center; Cincinnati, OH, 45219; USA
| | - Amom R. Meetei
- Department of Oncology; Cincinnati Children’s Hospital Medical Center; Cincinnati, OH, 45219; USA
| | - Susanne I. Wells
- Department of Oncology; Cincinnati Children’s Hospital Medical Center; Cincinnati, OH, 45219; USA
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Teng Y, Lang L, Jauregui CE. The Complexity of DEK Signaling in Cancer Progression. Curr Cancer Drug Targets 2018; 18:256-265. [PMID: 28530531 DOI: 10.2174/1568009617666170522094730] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 03/12/2017] [Accepted: 04/10/2017] [Indexed: 11/22/2022]
Abstract
The DNA binding protein and chromatin structural regulator DEK regulate many cellular processes. These include proliferation, differentiation, apoptosis, senescence, DNA repairing and the maintenance of stem cell phenotype. DEK is increasingly recognized as a crucial player in many steps of cancer initiation and progression, and is precisely regulated by abundant promoting and inhibiting factors directly or indirectly. DEK may serve as an architectural modulating protein to regulate the expression and function of multiple human genes in cancer cells. In this article we have reviewed the specificities and complexities of DEK in the regulation of transcription factors and global chromatin, including its biologic roles in malignant cells, and summarized the current research. The possible use of DEK as a diagnostic marker and drug target in the prevention or treatment of tumors is also discussed.
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Affiliation(s)
- Yong Teng
- Department of Oral Biology, Dental College of Georgia, Augusta University, Augusta, Georgia, United States
| | - Liwei Lang
- Department of Oral Biology, Dental College of Georgia, Augusta University, Augusta, Georgia, United States
| | - Catherine E Jauregui
- Department of Oral Biology, Dental College of Georgia, Augusta University, Augusta, Georgia, United States
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Panagopoulos I, Gorunova L, Torkildsen S, Tjønnfjord GE, Micci F, Heim S. DEK-NUP214-Fusion Identified by RNA-Sequencing of an Acute Myeloid Leukemia with t(9;12)(q34;q15). Cancer Genomics Proteomics 2017; 14:437-443. [PMID: 29109093 PMCID: PMC6070322 DOI: 10.21873/cgp.20053] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 10/06/2017] [Accepted: 10/12/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND/AIM Given the diagnostic, prognostic, biologic, and even therapeutic impact of leukemia-associated translocations and fusion genes, it is important to detect cryptic genomic rearrangements that may exist in hematological malignancies. CASE REPORT RNA-sequencing was performed on an acute myeloid leukemia case with the bone marrow karyotype 45,X,-Y,t(9;12) (q34;q15)[16]. RESULTS The DEK-NUP214 and PRRC2B-DEK fusion genes were found. Reverse transcriptase polymerase chain reaction together with direct sequencing verified the presence of both. Fluorescence in situ hybridization showed that the DEK-NUP214 fusion gene was located on the 6p22 band of a seemingly normal chromosome 6. CONCLUSION RNA-sequencing proved to be a valuable tool for the detection of a fusion of genes DEK and NUP214 in a leukemia that showed cryptic cytogenetic rearrangement of chromosome band 9q34.
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Affiliation(s)
- Ioannis Panagopoulos
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | - Ludmila Gorunova
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | - Synne Torkildsen
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
- Department of Haematology, Oslo University Hospital, Oslo, Norway
| | - Geir E Tjønnfjord
- Department of Haematology, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Francesca Micci
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | - Sverre Heim
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
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Yang Y, Gao M, Lin Z, Chen L, Jin Y, Zhu G, Wang Y, Jin T. DEK promoted EMT and angiogenesis through regulating PI3K/AKT/mTOR pathway in triple-negative breast cancer. Oncotarget 2017; 8:98708-98722. [PMID: 29228721 PMCID: PMC5716761 DOI: 10.18632/oncotarget.21864] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 09/21/2017] [Indexed: 12/13/2022] Open
Abstract
Triple-negative breast cancer (TNBC) is a highly aggressive subtype of breast cancer associated with poor prognosis. As an oncogene, DEK involves in regulation of various cellular metabolisms and plays an important role in tumor growth and progression. Increasing evidences suggested that abnormal expression of DEK is closely related to multiple malignant tumors. However, the possible involvement of DEK in epithelial to mesenchymal transition (EMT) and angiogenesis in TNBC remains unclear. In the present study, we revealed that the over-expression of DEK was significantly correlated with clinical stage, differentiation, and lymph node (LN) metastasis of TNBC and indicated poor overall survival of TNBC patients. Moreover, we demonstrated that DEK depletion could significantly reduce cell proliferation, migration, invasion and angiogenesis in vitro. We also found that DEK promoted cancer cell angiogenesis and metastasis by activating the PI3K/AKT/mTOR pathway. Furthermore, we revealed the inhibitory effect of DEK depletion on tumor growth and progression in a xenograft tumor model in mice. These data indicated that DEK promotes TNBC cell proliferation, angiogenesis, and metastasis via PI3K/AKT/mTOR signaling pathway, and therefore, it might be a potential target in TNBC therapy.
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Affiliation(s)
- Yang Yang
- Department of Pathology, Cancer Research Center, Yanbian University Medical College, Yanji 133002, China
| | - Meihua Gao
- Department of Internal Medicine, Yanbian University Hospital, Yanji 133000, China
| | - Zhenhua Lin
- Department of Pathology, Cancer Research Center, Yanbian University Medical College, Yanji 133002, China
| | - Liyan Chen
- Department of Biochemistry and Molecular Biology, Yanbian University Medical College, Yanji 133002, China
| | - Yu Jin
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji 133002, China
| | - Guang Zhu
- Department of Pathology, Cancer Research Center, Yanbian University Medical College, Yanji 133002, China
| | - Yixuan Wang
- Department of Pathology, Cancer Research Center, Yanbian University Medical College, Yanji 133002, China
| | - Tiefeng Jin
- Department of Pathology, Cancer Research Center, Yanbian University Medical College, Yanji 133002, China
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