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Kurilla A, László L, Takács T, Tilajka Á, Lukács L, Novák J, Pancsa R, Buday L, Vas V. Studying the Association of TKS4 and CD2AP Scaffold Proteins and Their Implications in the Partial Epithelial-Mesenchymal Transition (EMT) Process. Int J Mol Sci 2023; 24:15136. [PMID: 37894817 PMCID: PMC10606890 DOI: 10.3390/ijms242015136] [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: 07/28/2023] [Revised: 10/05/2023] [Accepted: 10/06/2023] [Indexed: 10/29/2023] Open
Abstract
Colon cancer is a leading cause of death worldwide. Identification of new molecular factors governing the invasiveness of colon cancer holds promise in developing screening and targeted therapeutic methods. The Tyrosine Kinase Substrate with four SH3 domains (TKS4) and the CD2-associated protein (CD2AP) have previously been linked to dynamic actin assembly related processes and cancer cell migration, although their co-instructive role during tumor formation remained unknown. Therefore, this study was designed to investigate the TKS4-CD2AP interaction and study the interdependent effect of TKS4/CD2AP on oncogenic events. We identified CD2AP as a novel TKS4 interacting partner via co-immunoprecipitation-mass spectrometry methods. The interaction was validated via Western blot (WB), immunocytochemistry (ICC) and proximity ligation assay (PLA). The binding motif of CD2AP was explored via peptide microarray. To uncover the possible cooperative effects of TKS4 and CD2AP in cell movement and in epithelial-mesenchymal transition (EMT), we performed gene silencing and overexpressing experiments. Our results showed that TKS4 and CD2AP form a scaffolding protein complex and that they can regulate migration and EMT-related pathways in HCT116 colon cancer cells. This is the first study demonstrating the TKS4-CD2AP protein-protein interaction in vitro, their co-localization in intact cells, and their potential interdependent effects on partial-EMT in colon cancer.
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Affiliation(s)
- Anita Kurilla
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - Loretta László
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
- Doctoral School of Biology, Institute of Biology, ELTE Eötvös Loránd University, 1117 Budapest, Hungary
| | - Tamás Takács
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
- Doctoral School of Biology, Institute of Biology, ELTE Eötvös Loránd University, 1117 Budapest, Hungary
| | - Álmos Tilajka
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
- Doctoral School of Biology, Institute of Biology, ELTE Eötvös Loránd University, 1117 Budapest, Hungary
| | - Laura Lukács
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - Julianna Novák
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - Rita Pancsa
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - László Buday
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
- Department of Molecular Biology, Semmelweis University, 1094 Budapest, Hungary
| | - Virág Vas
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
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Li J, Yan X, Li B, Huang L, Wang X, He B, Xie H, Wu Q, Chen L. Identification and validation of ferroptosis-related genes in patients infected with dengue virus: implication in the pathogenesis of DENV. Virus Genes 2023; 59:377-390. [PMID: 36973608 PMCID: PMC10042429 DOI: 10.1007/s11262-023-01985-1] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 02/22/2023] [Indexed: 03/29/2023]
Abstract
Ferroptosis, an iron-dependent form of regulated cell death, has been associated with many virus infections. However, the role of ferroptosis in dengue virus (DENV) infection remains to be clarified. In our study, a dengue fever microarray dataset (GSE51808) of whole blood samples was downloaded from the Gene Expression Omnibus (GEO), and a list of ferroptosis related genes (FRGs) was extracted from the FerrDb. We identified 37 ferroptosis-related differentially expressed genes (FR-DEGs) in DENV-infected patient blood samples compared to healthy individuals. Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses as well as protein-protein interaction (PPI) network of FR-DEGs revealed that these 37 FR-DEGs were mainly related to the C-type lectin receptor and p53 signaling pathway. Nine out of the 37 FR-DEGs (HSPA5, CAV1, HRAS, PTGS2, JUN, IL6, ATF3, XBP1, and CDKN2A) were hub genes, of which 5 were validated by qRT-PCR in DENV-infected HepG2 cells. Finally, using miRNA-mRNA regulatory network, we identified has-miR-124-3p and has-miR-16-5p as the most critical miRNAs in regulating the expression of these hub genes. In conclusion, our findings demonstrated that 5 FR-DEGs, JUN, IL6, ATF3, XBP1, and CDKN2A, and two miRNAs, has-miR-124-3p and has-miR-16-5p may implicate an essential role of ferroptosis in DENV infection, and further studies are warranted to explore the underlying mechanisms.
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Affiliation(s)
- Jinlian Li
- The Joint Laboratory on Transfusion-Transmitted Diseases (TTDs) Between Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Nanning Blood Center, Nanning Blood Center, Nanning, China
| | - Xipeng Yan
- The Joint Laboratory on Transfusion-Transmitted Diseases (TTDs) Between Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Nanning Blood Center, Nanning Blood Center, Nanning, China
| | - Bin Li
- The Joint Laboratory on Transfusion-Transmitted Diseases (TTDs) Between Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Nanning Blood Center, Nanning Blood Center, Nanning, China
| | - Linbing Huang
- The Joint Laboratory on Transfusion-Transmitted Diseases (TTDs) Between Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Nanning Blood Center, Nanning Blood Center, Nanning, China
| | - Xinwei Wang
- The Joint Laboratory on Transfusion-Transmitted Diseases (TTDs) Between Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Nanning Blood Center, Nanning Blood Center, Nanning, China
| | - Baoren He
- The Joint Laboratory on Transfusion-Transmitted Diseases (TTDs) Between Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Nanning Blood Center, Nanning Blood Center, Nanning, China
| | - He Xie
- The Hospital of Xidian Group, Xi'an, China
| | - Qunying Wu
- School of Intelligent Medicine and Biotechnology, Guilin Medical University, Guilin, China.
| | - Limin Chen
- The Joint Laboratory on Transfusion-Transmitted Diseases (TTDs) Between Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Nanning Blood Center, Nanning Blood Center, Nanning, China.
- The Hospital of Xidian Group, Xi'an, China.
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College, Chengdu, China.
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Lu N, Wang X, Wang W, Tang M, Chen J, You H, Wang D. TET1-mediated microRNA-188-5p promoter hydroxymethylation regulates PTEN/PI3K/AKT signaling pathway in acute myeloid leukemia cells. Arch Biochem Biophys 2023; 736:109523. [PMID: 36682704 DOI: 10.1016/j.abb.2023.109523] [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: 10/27/2022] [Revised: 01/13/2023] [Accepted: 01/18/2023] [Indexed: 01/22/2023]
Abstract
OBJECTIVE Acute myeloid leukemia (AML) remains a common hematopoietic malignancy, and drug resistance greatly blunts the efficacy of chemotherapy in AML treatment. Adriamycin (ADM, also called doxorubicin), is one of the most widely used chemotherapeutics for treating cancers. Herein, we studied the molecular mechanisms underlying microRNA-188-5p (miR-188-5p)-mediated ADM resistance in AML. METHODS Differentially expressed miRNAs were screened in normal and malignant hematopoietic cells by bioinformatics tools. MiR-188-5p expression in primary bone marrow CD34+ cells and AML cells was evaluated. AML/ADM cells were established using THP-1 and Kasumi-1 cells. The effect of miR-188-5p on the drug resistance in AML/ADM cells was examined by delivery of miR-188-5p-inhibitor. The binding relationship between TET1 and miR-188-5p was analyzed by ChIP, and the downstream target of miR-188-5p was predicted by bioinformatics analysis and validated by dual-luciferase assay. Finally, rescue experiments were carried out in vitro and in vivo. RESULTS miR-188-5p was highly expressed in AML cells, and miR-188-5p-inhibitor sensitized the AML/ADM cells to ADM. Inhibition of TET1 reduced miR-188-5p promoter hydroxymethylation and downregulated miR-188-5p. miR-188-5p bound to the 3'UTR of PTEN to inhibit PTEN expression, and the PI3K/AKT signaling was activated upon inhibition of PTEN. Suppression of PTEN conferred resistance again to AML/ADM cells in the presence of miR-188-5p inhibitor. CONCLUSION TET1 elevates miR-188-5p expression by promoting miR-188-5p promoter hydroxymethylation, and miR-188-5p inhibits PTEN expression to induce PI3K/AKT signaling pathway activation, leading to ADM resistance in AML.
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Wei P, Dong M, Bi Y, Chen S, Huang W, Li T, Liu B, Fu X, Yang Y. Identification and validation of a signature based on macrophage cell marker genes to predict recurrent miscarriage by integrated analysis of single-cell and bulk RNA-sequencing. Front Immunol 2022; 13:1053819. [PMID: 36439123 PMCID: PMC9692009 DOI: 10.3389/fimmu.2022.1053819] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [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: 09/26/2022] [Accepted: 10/24/2022] [Indexed: 09/12/2023] Open
Abstract
Recurrent miscarriage (RM) is a chronic, heterogeneous autoimmune disease that has serious social and personal consequences. No valid and reliable diagnostic markers or therapeutic targets for RM have been identified. Macrophages impact the innate immune system and can be used as diagnostic and prognostic markers for many diseases. We first collected 16 decidua and villi tissue samples from 5 normal patients and 3 RM patients for single-cell RNA sequencing data analysis and identified 1293 macrophage marker genes. We then screened a recurrent miscarriage cohort (GSE165004) for 186 macrophage-associated marker genes that were significantly differentially expressed between RM patients and the normal pregnancy endometrial tissues, and performed a functional enrichment analysis of differentially expressed genes. We then identified seven core genes (ACTR2, CD2AP, MBNL2, NCSTN, PUM1, RPN2, and TBC1D12) from the above differentially expressed gene group that are closely related to RM using the LASSO, Random Forest and SVM-RFE algorithms. We also used GSE26787 and our own collection of clinical specimens to further evaluate the diagnostic value of the target genes. A nomogram was constructed of the expression levels of these seven target genes to predict RM, and the ROC and calibration curves showed that our nomogram had a high diagnostic value for RM. These results suggest that ACTR2 and NCSTN may be potential targets for preventative RM treatments.
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Affiliation(s)
- Peiru Wei
- Guangxi Reproductive Medical Center, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Guangxi Key Laboratory of Immunology and Metabolism for Liver Diseases, Guangxi Medical University, Nanning, China
- The Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor, Guangxi Medical University, Ministry of Education, Nanning, China
| | - Mingyou Dong
- Guangxi Reproductive Medical Center, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
- The Key Laboratory of Molecular Pathology (For Hepatobiliary Diseases) of Guangxi, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Yin Bi
- Guangxi Reproductive Medical Center, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Guangxi Key Laboratory of Immunology and Metabolism for Liver Diseases, Guangxi Medical University, Nanning, China
- The Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor, Guangxi Medical University, Ministry of Education, Nanning, China
| | - Saiqiong Chen
- Guangxi Reproductive Medical Center, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Department of Obstetrics and Gynecology, The Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, China
| | - Weiyu Huang
- Guangxi Reproductive Medical Center, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Guangxi Key Laboratory of Immunology and Metabolism for Liver Diseases, Guangxi Medical University, Nanning, China
- The Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor, Guangxi Medical University, Ministry of Education, Nanning, China
| | - Ting Li
- Guangxi Reproductive Medical Center, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Guangxi Key Laboratory of Immunology and Metabolism for Liver Diseases, Guangxi Medical University, Nanning, China
- The Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor, Guangxi Medical University, Ministry of Education, Nanning, China
| | - Bo Liu
- Guangxi Reproductive Medical Center, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Xiaoqian Fu
- Guangxi Reproductive Medical Center, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yihua Yang
- Guangxi Reproductive Medical Center, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Guangxi Key Laboratory of Immunology and Metabolism for Liver Diseases, Guangxi Medical University, Nanning, China
- The Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor, Guangxi Medical University, Ministry of Education, Nanning, China
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Li Y, Ren Q, Wang X, Luoreng Z, Wei D. Bta-miR-199a-3p Inhibits LPS-Induced Inflammation in Bovine Mammary Epithelial Cells via the PI3K/AKT/NF-κB Signaling Pathway. Cells 2022; 11:cells11213518. [PMID: 36359915 PMCID: PMC9656885 DOI: 10.3390/cells11213518] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/27/2022] [Accepted: 11/04/2022] [Indexed: 11/11/2022] Open
Abstract
Mastitis is characterized by inflammatory damage to mammary gland tissue, which could decline milk production and quality and significantly affect the economic benefits of ranching. MicroRNAs (miRNAs), such as miR-199a-3p, are novel therapeutic targets in inflammation, and their regulation is an effective strategy for inflammation control. Despite its importance in humans and animals, the molecular mechanism of bovine miR-199a-3p (bta-miR-199a-3p) in dairy cow mastitis and bovine mammary epithelial cell (bMEC) inflammation is unclear. In our study, a bovine mammary epithelial cell line (MAC-T) induced by lipopolysaccharide (LPS) was used as an inflammatory cell model to investigate the molecular mechanism of bta-miR-199a-3p in the MAC-T inflammatory response. bta-miR-199a-3p was up-regulated in the LPS-induced MAC-T cells, while CD2-associated protein (CD2AP) was revealed as its target gene in a double luciferase reporter gene experiment. In addition, the overexpression of bta-miR-199a-3p negatively regulated the expression of CD2AP and the activation of the phosphatidylinositol 3-kinase (PI3K)/AKT/nuclear factor kappa-B (NF-κB) signaling pathway. These subsequently inhibited the secretion of related inflammatory factors (TNF-α, IL-1β, and IL-6) and the expression of apoptotic genes (CASP3 and CASP9), thereby alleviating the LPS-challenged inflammatory response in the MAC-T cells. Silencing of bta-miR-199a-3p, however, reversed the above effects. Thus, bta-miR-199a-3p inhibits LPS-induced inflammation in bMECs by directly targeting CD2AP and regulating the PI3K/AKT/NF-κB signaling pathway. This study reveals the potential regulatory mechanism of bta-miR-199a-3p in bMEC inflammatory immune response and may serve as a useful target for the treatment of mastitis.
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Affiliation(s)
- Yuhang Li
- School of Agriculture, Ningxia University, Yinchuan 750021, China
- Key Laboratory of Ruminant Molecular Cell Breeding, Ningxia Hui Autonomous Region, Yinchuan 750021, China
| | - Qianqian Ren
- School of Agriculture, Ningxia University, Yinchuan 750021, China
- Key Laboratory of Ruminant Molecular Cell Breeding, Ningxia Hui Autonomous Region, Yinchuan 750021, China
| | - Xingping Wang
- School of Agriculture, Ningxia University, Yinchuan 750021, China
- Key Laboratory of Ruminant Molecular Cell Breeding, Ningxia Hui Autonomous Region, Yinchuan 750021, China
- Correspondence: (X.W.); (Z.L.)
| | - Zhuoma Luoreng
- School of Agriculture, Ningxia University, Yinchuan 750021, China
- Key Laboratory of Ruminant Molecular Cell Breeding, Ningxia Hui Autonomous Region, Yinchuan 750021, China
- Correspondence: (X.W.); (Z.L.)
| | - Dawei Wei
- School of Agriculture, Ningxia University, Yinchuan 750021, China
- Key Laboratory of Ruminant Molecular Cell Breeding, Ningxia Hui Autonomous Region, Yinchuan 750021, China
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Zhou Z, Hu F, Huang D, Chi Q, Tang NLS. Nonsense-Mediated Decay Targeted RNA (ntRNA): Proposal of a ntRNA–miRNA–lncRNA Triple Regulatory Network Usable as Biomarker of Prognostic Risk in Patients with Kidney Cancer. Genes (Basel) 2022; 13:genes13091656. [PMID: 36140823 PMCID: PMC9498815 DOI: 10.3390/genes13091656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/05/2022] [Accepted: 09/08/2022] [Indexed: 11/16/2022] Open
Abstract
The most prevalent subtype of renal cell carcinoma (RCC), kidney renal clear cell carcinoma (KIRC) may be associated with a poor prognosis in a high number of cases, with a stage-specific prognostic stratification currently in use. No reliable biomarkers have been utilized so far in clinical practice despite the efforts in biomarker research in the last years. Nonsense-mediated mRNA decay (NMD) is a critical safeguard against erroneous transcripts, particularly mRNA transcripts containing premature termination codons (called nonsense-mediated decay targeted RNA, ntRNA). In this study, we first characterized 296 differentially expressed ntRNAs that were independent of the corresponding gene, 261 differentially expressed miRNAs, and 4653 differentially expressed lncRNAs. Then, we constructed a hub ntRNA–miRNA–lncRNA triple regulatory network associated with the prognosis of KIRC. Moreover, the results of immune infiltration analysis indicated that this network may influence the changes of the tumor immune microenvironment. A prognostic model derived from the genes and immune cells associated with the network was developed to distinguish between high- and low-risk patients, which was a better prognostic than other models, constructed using different biomarkers. Additionally, correlation of methylation and ntRNAs in the network suggested that some ntRNAs were regulated by methylation, which is helpful to further study the causes of abnormal expression of ntRNAs. In conclusion, this study highlighted the possible clinical implications of ntRNA functions in KIRC, proposing potential significant biomarkers that could be utilized to define the prognosis and design personalized treatment plans in kidney cancer management in the next future.
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Affiliation(s)
- Zhiyue Zhou
- Department of Statistics, School of Science, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
| | - Fuyan Hu
- Department of Statistics, School of Science, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
- Correspondence: (F.H.); (N.L.S.T.)
| | - Dan Huang
- Department of Biology, Southern University of Science and Technology, Shenzhen 518055, China
| | - Qingjia Chi
- Department of Engineering Structure and Mechanics, School of Science, Wuhan University of Technology, Wuhan 430070, China
| | - Nelson L. S. Tang
- Department of Chemical Pathology and Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
- Functional Genomics and Biostatistical Computing Laboratory, CUHK Shenzhen Research Institute, Shenzhen 518000, China
- Hong Kong Branch of CAS Center for Excellence in Animal Evolution and Genetics, School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
- Correspondence: (F.H.); (N.L.S.T.)
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Jeong S, Kim SA, Ahn SG. HOXC6-Mediated miR-188-5p Expression Induces Cell Migration through the Inhibition of the Tumor Suppressor FOXN2. Int J Mol Sci 2021; 23:ijms23010009. [PMID: 35008435 PMCID: PMC8744690 DOI: 10.3390/ijms23010009] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/17/2021] [Accepted: 12/18/2021] [Indexed: 12/21/2022] Open
Abstract
Homeobox C6 (HOXC6) is a transcription factor that plays a role in the malignant progression of various cancers. However, the roles of HOXC6 and its regulatory mechanism remain unclear. In this study, we used microRNA (miRNA) regulatory networks to identify key regulatory interactions responsible for HOXC6-mediated cancer progression. In microarray profiling of miRNAs, the levels of miRNAs such as hsa-miR-188-5p, hsa-miR-8063, and hsa-miR-8064 were significantly increased in HOXC6-overexpressing cells. Higher positive expression rates of HOXC6 and miR-188-5p were observed in malignant cancer. We also found that HOXC6 significantly upregulated miR-188-5p expression. The underlying function of HOXC6-mediated miR-188-5p expression was predicted through TargetScan and the MiRNA Database. Overexpression of mir-188-5p inhibited the expression of forkhead box N2 (FOXN2), a tumor suppressor gene. Furthermore, in the luciferase assay, miR-188-5p bound to the 3'-UTR of FOXN2 and was mainly responsible for the dysregulation of FOXN2 expression. Silencing FOXN2 induced cell migration, and the effect of FOXN2 silencing was enhanced when the HOXC6/miR-188-5p axis was induced. These results suggest that HOXC6/miR-188-5p may induce malignant progression in cancer by inhibiting the activation of the FOXN2 signaling pathway.
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Affiliation(s)
- Seho Jeong
- Department of Pathology, School of Dentistry, Chosun University, Gwangju 61452, Korea;
| | - Soo-A Kim
- Department of Biochemistry, School of Oriental Medicine, Dongguk University, Gyeongju 38066, Korea;
| | - Sang-Gun Ahn
- Department of Pathology, School of Dentistry, Chosun University, Gwangju 61452, Korea;
- Correspondence: ; Tel.: +82-62-230-6898
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Gamara J, Davis L, Leong AZ, Pagé N, Rollet-Labelle E, Zhao C, Hongu T, Funakoshi Y, Kanaho Y, Aoudji F, Pelletier M, Bourgoin SG. Arf6 regulates energy metabolism in neutrophils. Free Radic Biol Med 2021; 172:550-561. [PMID: 34245858 DOI: 10.1016/j.freeradbiomed.2021.07.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/24/2021] [Accepted: 07/01/2021] [Indexed: 12/12/2022]
Abstract
The small GTPase Arf6 regulates many cellular processes, including cytoskeletal remodeling, receptor endocytosis, and pathogen phagocytosis. Arf6 silencing in neutrophil (PMN)-like cells is well-known to inhibit chemotactic peptide-mediated activation of phospholipase D, the oxidative burst, and β2 integrin-dependent adhesion. In conditional knockout (cKO) mice, the migration to inflammatory sites of Arf6-deficient PMNs was diminished and associated with reduced cell surface expression of β2 integrins. In this study we assessed the impact of Arf6 depletion on the functions and gene expression profile of PMNs isolated from the mouse air pouch. Numerous genes involved in response to oxygen levels, erythrocyte and myeloid differentiation, macrophage chemotaxis, response to chemicals, apoptosis, RNA destabilization, endosome organization, and vesicle transport were differentially expressed in PMNs cKO for Arf6. Lpar6 and Lacc-1 were the most up-regulated and down-regulated genes, respectively. The deletion of Arf6 also decreased Lacc-1 protein level in PMNs, and silencing of Arf6 in THP-1 monocytic cells delayed LPS-mediated Lacc-1 expression. We report that fMLP or zymosan-induced glycolysis and oxygen consumption rate were both decreased in air pouch PMNs but not in bone marrow PMNs of Arf6 cKO mice. Reduced oxygen consumption correlated with a decrease in superoxide and ROS production. Deletion of Arf6 in PMNs also reduced phagocytosis and interfered with apoptosis. The data suggest that Arf6 regulates energy metabolism, which may contribute to impaired phagocytosis, ROS production, and apoptosis in PMN-Arf6 cKO. This study provides new information on the functions and the inflammatory pathways influenced by Arf6 in PMNs.
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Affiliation(s)
- Jouda Gamara
- Division of Infectious Disease and Immunology, CHU de Quebec Research Center, Quebec, QC, Canada, G1V4G2
| | - Lynn Davis
- Division of Infectious Disease and Immunology, CHU de Quebec Research Center, Quebec, QC, Canada, G1V4G2
| | - Andrew Z Leong
- Division of Infectious Disease and Immunology, CHU de Quebec Research Center, Quebec, QC, Canada, G1V4G2
| | - Nathalie Pagé
- Division of Infectious Disease and Immunology, CHU de Quebec Research Center, Quebec, QC, Canada, G1V4G2
| | - Emmanuelle Rollet-Labelle
- Division of Infectious Disease and Immunology, CHU de Quebec Research Center, Quebec, QC, Canada, G1V4G2
| | - Chenqi Zhao
- Division of Infectious Disease and Immunology, CHU de Quebec Research Center, Quebec, QC, Canada, G1V4G2
| | - Tsunaki Hongu
- German Cancer Research Centre (DFKZ), Group of Metastatic Niches, 69120, Heidelberg, Germany
| | - Yuji Funakoshi
- Department of Physiological Chemistry, Faculty of Medicine and Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennohdai, Tsukuba, 305-8575, Japan
| | - Yasunori Kanaho
- Department of Physiological Chemistry, Faculty of Medicine and Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennohdai, Tsukuba, 305-8575, Japan
| | - Fawzi Aoudji
- Division of Infectious Disease and Immunology, CHU de Quebec Research Center, Quebec, QC, Canada, G1V4G2; Centre ARThrite, Department of Microbiology-Infectiology and Immunology, Faculty of Medicine, Laval University, Quebec, QC, Canada, G1V0A6
| | - Martin Pelletier
- Division of Infectious Disease and Immunology, CHU de Quebec Research Center, Quebec, QC, Canada, G1V4G2; Centre ARThrite, Department of Microbiology-Infectiology and Immunology, Faculty of Medicine, Laval University, Quebec, QC, Canada, G1V0A6
| | - Sylvain G Bourgoin
- Division of Infectious Disease and Immunology, CHU de Quebec Research Center, Quebec, QC, Canada, G1V4G2; Centre ARThrite, Department of Microbiology-Infectiology and Immunology, Faculty of Medicine, Laval University, Quebec, QC, Canada, G1V0A6.
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