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Graham A. Modulation of the Cellular microRNA Landscape: Contribution to the Protective Effects of High-Density Lipoproteins (HDL). BIOLOGY 2023; 12:1232. [PMID: 37759631 PMCID: PMC10526091 DOI: 10.3390/biology12091232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/01/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023]
Abstract
High-density lipoproteins (HDL) play an established role in protecting against cellular dysfunction in a variety of different disease contexts; however, harnessing this therapeutic potential has proved challenging due to the heterogeneous and relative instability of this lipoprotein and its variable cargo molecules. The purpose of this study is to examine the contribution of microRNA (miRNA; miR) sequences, either delivered directly or modulated endogenously, to these protective functions. This narrative review introduces the complex cargo carried by HDL, the protective functions associated with this lipoprotein, and the factors governing biogenesis, export and the uptake of microRNA. The possible mechanisms by which HDL can modulate the cellular miRNA landscape are considered, and the impact of key sequences modified by HDL is explored in diseases such as inflammation and immunity, wound healing, angiogenesis, dyslipidaemia, atherosclerosis and coronary heart disease, potentially offering new routes for therapeutic intervention.
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Affiliation(s)
- Annette Graham
- Department of Biological and Biomedical Sciences, School of Health and Life Sciences, Glasgow Caledonian University, Cowcaddens Road, Glasgow G4 0BA, UK
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2
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Li C, Zhao W, Zhou H, Wu J, Huo Y, Jiang D, Ji X, Liu K, Xu Q, Li W. Functional Mutations in the microRNA-155 Promoter Modulate its Transcription Efficiency and Expression. Mol Biotechnol 2023:10.1007/s12033-023-00857-1. [PMID: 37624482 DOI: 10.1007/s12033-023-00857-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 08/07/2023] [Indexed: 08/26/2023]
Abstract
Limited research has been conducted on porcine miR-155 promoters, and previous study from our group have identified two haplotypes (TT and CC) in different pig breeds, each associated with five fully linked mutation sites within or near the miR-155 gene (Li et al. Dev Comp Immunol 39(1):110-116, 2013). In this study, the promoter region of porcine miR-155 was screened, and two important transcription factors, Foxp3 and RelA, were identified. The binding ability of Foxp3 protein was found to be affected by the first mutation site (A/C) using EMSA analysis. In vitro experiments revealed that the expression level of miR-155 was significantly higher in the C haplotype compared to the T haplotype. Additionally, northern blotting assays indicated that both the first mutation site (A/C) and the fourth mutation site (G/T) had a significant impact on miR-155 expression levels. These findings provide further insights into the transcriptional regulation of porcine miR-155 and identify crucial mutation sites that influence miR-155 expression. This knowledge can serve as a basis for identifying potential molecular markers associated with disease resistance in swine.
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Affiliation(s)
- Congcong Li
- College of Animal Science and Technology, Henan University of Animal Husbandry and Economy, No. 6 Longzi North Road, Zhengdong New District, Zhengzhou, 450046, Henan, China.
| | - Wanxia Zhao
- College of Animal Science and Technology, Henan University of Animal Husbandry and Economy, No. 6 Longzi North Road, Zhengdong New District, Zhengzhou, 450046, Henan, China
| | - Huijie Zhou
- College of Animal Science and Technology, Henan University of Animal Husbandry and Economy, No. 6 Longzi North Road, Zhengdong New District, Zhengzhou, 450046, Henan, China
| | - Jiao Wu
- College of Animal Science and Technology, Henan University of Animal Husbandry and Economy, No. 6 Longzi North Road, Zhengdong New District, Zhengzhou, 450046, Henan, China
| | - Yong Huo
- College of Animal Science and Technology, Henan University of Animal Husbandry and Economy, No. 6 Longzi North Road, Zhengdong New District, Zhengzhou, 450046, Henan, China
| | - Dongfeng Jiang
- College of Animal Science and Technology, Henan University of Animal Husbandry and Economy, No. 6 Longzi North Road, Zhengdong New District, Zhengzhou, 450046, Henan, China
| | - Xiangbo Ji
- Henan Key Laboratory of Unconventional Feed Resources Innovative Utilization, Henan University of Animal Husbandry and Economy, Zhengzhou, Henan, China
| | - Kun Liu
- Henan Key Laboratory of Unconventional Feed Resources Innovative Utilization, Henan University of Animal Husbandry and Economy, Zhengzhou, Henan, China
| | - Qiuliang Xu
- College of Animal Science and Technology, Henan University of Animal Husbandry and Economy, No. 6 Longzi North Road, Zhengdong New District, Zhengzhou, 450046, Henan, China
| | - Wantao Li
- College of Animal Science and Technology, Henan University of Animal Husbandry and Economy, No. 6 Longzi North Road, Zhengdong New District, Zhengzhou, 450046, Henan, China
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Autore F, Ramassone A, Stirparo L, Pagotto S, Fresa A, Innocenti I, Visone R, Laurenti L. Role of microRNAs in Chronic Lymphocytic Leukemia. Int J Mol Sci 2023; 24:12471. [PMID: 37569845 PMCID: PMC10419063 DOI: 10.3390/ijms241512471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 07/29/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023] Open
Abstract
Chronic Lymphocytic Leukemia (CLL) is the most common form of leukemia in adults, with a highly variable clinical course. Improvement in the knowledge of the molecular pathways behind this disease has led to the development of increasingly specific therapies, such as BCR signaling inhibitors and BCL-2 inhibitors. In this context, the emerging role of microRNAs (miRNAs) in CLL pathophysiology and their possible application in therapy is worth noting. MiRNAs are one of the most important regulatory molecules of gene expression. In CLL, they can act both as oncogenes and tumor suppressor genes, and the deregulation of specific miRNAs has been associated with prognosis, progression, and drug resistance. In this review, we describe the role of the miRNAs that primarily impact the disease, and how these miRNAs could be used as therapeutic tools. Certainly, the use of miRNAs in clinical practice is still limited in CLL. Many issues still need to be solved, particularly regarding their biological and safety profile, even if several studies have suggested their efficacy on the disease, alone or in combination with other drugs.
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Affiliation(s)
- Francesco Autore
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Roma, Italy (A.F.); (I.I.); (L.L.)
| | - Alice Ramassone
- Center for Advanced Studies and Technology (CAST), G. d’Annunzio University, 66100 Chieti, Italy; (A.R.); (S.P.); (R.V.)
| | - Luca Stirparo
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Roma, Italy (A.F.); (I.I.); (L.L.)
| | - Sara Pagotto
- Center for Advanced Studies and Technology (CAST), G. d’Annunzio University, 66100 Chieti, Italy; (A.R.); (S.P.); (R.V.)
- Department of Medical, Oral and Biotechnological Sciences, G. d’Annunzio University, 66100 Chieti, Italy
| | - Alberto Fresa
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Roma, Italy (A.F.); (I.I.); (L.L.)
| | - Idanna Innocenti
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Roma, Italy (A.F.); (I.I.); (L.L.)
| | - Rosa Visone
- Center for Advanced Studies and Technology (CAST), G. d’Annunzio University, 66100 Chieti, Italy; (A.R.); (S.P.); (R.V.)
- Department of Medical, Oral and Biotechnological Sciences, G. d’Annunzio University, 66100 Chieti, Italy
| | - Luca Laurenti
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Roma, Italy (A.F.); (I.I.); (L.L.)
- Sezione di Ematologia, Dipartimento di Scienze Radiologiche ed Ematologiche, Università Cattolica del Sacro Cuore, 00168 Roma, Italy
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Daprà V, Galliano I, Rassu M, Calvi C, Montanari P, Bergallo M. Mir-155 expression is downregulated in hematopoietic stem cell transplantation patients with Epstein-Barr virus infection. Minerva Pediatr (Torino) 2023; 75:550-556. [PMID: 31833346 DOI: 10.23736/s2724-5276.19.05420-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
BACKGROUND MicroRNAs (miRNAs) are a class of short length double strand genome encoded RNAs that are produced to repress post-transcriptionally the expression of cellular mRNAs. 2578 unique mature miRNAs are currently annotated in the human genome and participate in the regulation of multiple events, such as cellular proliferation or apoptosis. The over-expression of miR-155 of cellular origin might play a key role in the life cycle of EBV. In this study 24 pediatric patients undergoing HSCT seropositive and seronegative to EBV were enrolled. Thirty-one peripheral blood samples were collected from these patients. The mir-155 expression profile has been evaluated by a stem-loop Real Time PCR in all these conditions. METHODS Of 24 patients, 4 were seronegative to EBV and EBV negative to PCR (Group I), 10 were seropositive to EBV and EBV negative to PCR (Group II) and 10 were seropositive to EBV and EBV positive to PCR (Group III). RESULTS Based on relative quantification, the mir-155 expression was compared among the groups. The comparison between HSCT patients without EBV infection seronegative to EBV (Group I) showed higher levels of mir-155 expression than patients seropositive to EBV (P=0.1419). The mir-155 expression levels in seronegative to EBV were not significantly different compared with the patients seropositive to EBV (P=0.6504). The mir-155 expression levels in seropositive to EBV without and with EBV infection (positive viral load), were not significantly (P=0.7667). Also, when we evaluated the mir-155 expression levels comparing all EBV negative patients with an active EBV infection, we did not observe a statistically significant difference (P=0.9782). CONCLUSIONS Our results are controversial, showing a higher production of mir-155 levels during EBV infection.
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Affiliation(s)
- Valentina Daprà
- Medical School, Department of Public Health and Pediatric Sciences, University of Turin, Turin, Italy
| | - Ilaria Galliano
- Medical School, Department of Public Health and Pediatric Sciences, University of Turin, Turin, Italy
| | - Marco Rassu
- Medical School, Department of Public Health and Pediatric Sciences, University of Turin, Turin, Italy
| | - Cristina Calvi
- Medical School, Department of Public Health and Pediatric Sciences, University of Turin, Turin, Italy
| | - Paola Montanari
- Medical School, Department of Public Health and Pediatric Sciences, University of Turin, Turin, Italy
| | - Massimiliano Bergallo
- Medical School, Department of Public Health and Pediatric Sciences, University of Turin, Turin, Italy -
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Lee JH, Lee BH, Jeong S, Joh CSY, Nam HJ, Choi HS, Sserwadda H, Oh JW, Park CG, Jin SP, Kim HJ. Single-cell RNA sequencing identifies distinct transcriptomic signatures between PMA/ionomycin- and αCD3/αCD28-activated primary human T cells. Genomics Inform 2023; 21:e18. [PMID: 37704208 PMCID: PMC10326540 DOI: 10.5808/gi.23009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 04/01/2023] [Accepted: 04/03/2023] [Indexed: 07/08/2023] Open
Abstract
Immunologists have activated T cells in vitro using various stimulation methods, including phorbol myristate acetate (PMA)/ionomycin and αCD3/αCD28 agonistic antibodies. PMA stimulates protein kinase C, activating nuclear factor-κB, and ionomycin increases intracellular calcium levels, resulting in activation of nuclear factor of activated T cell. In contrast, αCD3/αCD28 agonistic antibodies activate T cells through ZAP-70, which phosphorylates linker for activation of T cell and SH2-domain-containing leukocyte protein of 76 kD. However, despite the use of these two different in vitro T cell activation methods for decades, the differential effects of chemical-based and antibody-based activation of primary human T cells have not yet been comprehensively described. Using single-cell RNA sequencing (scRNA-seq) technologies to analyze gene expression unbiasedly at the single-cell level, we compared the transcriptomic profiles of the non-physiological and physiological activation methods on human peripheral blood mononuclear cell-derived T cells from four independent donors. Remarkable transcriptomic differences in the expression of cytokines and their respective receptors were identified. We also identified activated CD4 T cell subsets (CD55+) enriched specifically by PMA/ionomycin activation. We believe this activated human T cell transcriptome atlas derived from two different activation methods will enhance our understanding, highlight the optimal use of these two in vitro T cell activation assays, and be applied as a reference standard when analyzing activated specific disease-originated T cells through scRNA-seq.
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Affiliation(s)
- Jung Ho Lee
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul 03080, Korea
| | - Brian H Lee
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul 03080, Korea
| | - Soyoung Jeong
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul 03080, Korea
| | - Christine Suh-Yun Joh
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul 03080, Korea
| | - Hyo Jeong Nam
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul 03080, Korea
| | - Hyun Seung Choi
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul 03080, Korea
| | - Henry Sserwadda
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul 03080, Korea
| | - Ji Won Oh
- Department of Anatomy, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Chung-Gyu Park
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul 03080, Korea
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul 03080, Korea
- Transplantation Research Institute, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Seon-Pil Jin
- Department of Dermatology, Seoul National University Hospital, Seoul 03080, Korea
- Department of Dermatology, Seoul National University College of Medicine, Seoul 03080, Korea
- Medical Research Center, Institute of Human-Environmental Interface Biology, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Hyun Je Kim
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul 03080, Korea
- Genomic Medicine Institute, Seoul National University College of Medicine, Seoul 03080, Korea
- Seoul National University Hospital, Seoul 03080, Korea
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Han D, Zhu S, Li X, Li Z, Huang H, Gao W, Liu Y, Zhu H, Yu X. The NF-κB/miR-488/ERBB2 axis modulates pancreatic cancer cell malignancy and tumor growth through cell cycle signaling. Cancer Biol Ther 2022; 23:294-309. [PMID: 35343383 PMCID: PMC8966990 DOI: 10.1080/15384047.2022.2054257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 06/27/2021] [Accepted: 01/17/2022] [Indexed: 01/17/2023] Open
Abstract
Pancreatic cancer is one of the malignancies having the poorest prognosis due to late diagnoses and lack of efficient treatment regimens. The identification of potential miRNA-targeted gene axes could act as targets for developing novel treatment strategies. Herein, it was assessed that miR-488 expression was markedly downregulated within pancreatic carcinoma. Higher expression of miR-488 was shown to be linked to better prognosis rates of pancreatic carcinoma as per online data. Within two pancreatic tumor cells, MIA PaCa-2 and PANC-1, miR-488 overexpression significantly suppressed malignant cytological behavior by inhibiting cell viability, enhancing cell apoptosis, and inducing cell cycle G2/M-phase arrest. Moreover, miR-488 overexpression also decreased the protein levels of cell cycle regulators, including cyclin A, cyclin B, CDK1, and CDK2. miR-488 directly targets ERBB2 (receptor tyrosine-protein kinase2) to suppress the expression of ERBB2 by targeting its 3'UTR. ERBB2 knockdown in MIA PaCa-2 and PANC-1 cell lines suppressed, but miR-488 inhibition enhanced the cancer cell biological malignant behavior; the effects of miR-488 inhibition on pancreatic cancer cells were significantly reversed by ERBB2 knockdown. NF-κB suppressed the expression of miR-488 transcriptionally via targeting its promoter region, consequentially repressing the tumor-suppressive effects of miR-488 upon pancreatic tumor cells. Thus, an NF-κB/miR-488/ERBB2 axis modulating pancreatic cancer cell malignancy and tumor growth through cell cycle signaling was conclusively demonstrated.
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Affiliation(s)
- Duo Han
- Department of Hepatopancreatobiliary Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Shaihong Zhu
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Xia Li
- Department of Endocrinology, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Zhiqiang Li
- Department of Hepatopancreatobiliary Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Hui Huang
- Department of Hepatopancreatobiliary Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Wenzhe Gao
- Department of Hepatopancreatobiliary Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Yunfei Liu
- Department of Hepatopancreatobiliary Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Hongwei Zhu
- Department of Hepatopancreatobiliary Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Xiao Yu
- Department of Hepatopancreatobiliary Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province, China
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MIR155HG Plays a Bivalent Role in Regulating Innate Antiviral Immunity by Encoding Long Noncoding RNA-155 and microRNA-155-5p. mBio 2022; 13:e0251022. [PMID: 36321836 PMCID: PMC9765511 DOI: 10.1128/mbio.02510-22] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
MIR155HG encodes a precursor RNA of microRNA-155 (miRNA-155). We previously identified this RNA also as a long noncoding RNA (lncRNA) that we call lncRNA-155. To define the functions of miRNA-155 and lncRNA-155, we generated miRNA-155 knockout (KO) mice lacking only 19 bp of the miRNA-155 core sequence without affecting the expression of lncRNA-155. Surprisingly, compared with the miRNA-155KO mice, previously generated lncRNA-155KO mice were more susceptible to both influenza virus (RNA virus) and pseudorabies virus (DNA virus) infection, as characterized by lower survival rate, higher body weight loss, and higher viral load. We found that miRNA-155-5p enhanced antiviral responses by positively regulating activation of signal transducer and activator of transcription 1 (STAT1), but the STAT1 activity differed greatly in the animals (lncRNA-155KO < miRNA-155KO < wild type). In line with this, expression levels of several critical interferon-stimulated genes (ISGs) were also significantly different (lncRNA-155KO < miRNA-155KO < wild type). We found that lncRNA-155 augmented interferon beta (IFN-β) production during the viral infection, but miRNA-155 had no significant effect on the virus-induced IFN-β expression. Furthermore, we observed that lncRNA-155 loss in mice resulted in dramatic inhibition of virus-induced activation of interferon regulatory factor 3 compared to both miRNA-155KO and wild-type (WT) animals. Moreover, lncRNA-155 still significantly suppressed the viral infection even though the miRNA-155 derived from lncRNA-155 was deleted or blocked. These results reveal that lncRNA-155 and miRNA-155 regulate antiviral responses through distinct mechanisms, indicating a bivalent role for MIR155HG in innate immunity. IMPORTANCE Here, we found that lncRNA-155KO mice lacking most of the lncRNA-155 sequences along with pre-miRNA-155, were more susceptible to influenza virus or pseudorabies virus infection than miRNA-155KO mice lacking only 19 bp of the miRNA-155 core sequence without affecting the expression of lncRNA-155, as evidenced by faster body weight loss, poorer survival, and higher viral load, suggesting an additional role of lncRNA-155 in regulating viral pathogenesis besides via processing miRNA-155. Congruously, miRNA-155-deleted lncRNA-155 significantly attenuated the viral infection. Mechanistically, we demonstrated miRNA-155-5p potentiated antiviral responses by promoting STAT1 activation but could not directly regulate the IFN-β expression. In contrast, lncRNA-155 enhanced virus-induced IFN-β production by regulating the activation of interferon regulatory factor 3. This finding reveals a bivalent role of MIR155HG in regulating antiviral responses through encoding lncRNA-155 and miRNA-155-5p and provides new insights into complicated mechanisms underlying interaction between virus and host innate immunity.
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Modulation of the long non-coding RNA Mir155hg by high, but not moderate, hydrostatic pressure in cartilage precursor cells. PLoS One 2022; 17:e0275682. [PMID: 36538560 PMCID: PMC9767356 DOI: 10.1371/journal.pone.0275682] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Accepted: 09/21/2022] [Indexed: 12/24/2022] Open
Abstract
Osteoarthritis (OA) is the most common joint disease in older adults and is characterized by a gradual degradation of articular cartilage due to decreased cartilage matrix gene expression and increased expression of genes involved in protein degradation, apoptosis and inflammation. Due to the high water content of cartilage, one of the main physical stimuli sensed by chondrocytes is hydrostatic pressure. We previously showed that high pressure above 20 MPa induced gene expression changes in chondrocyte precursor cells similar to what is observed in OA. Micro-RNAs are small non-coding RNAs essential to many physiological and pathological process including OA. As the micro-RNA miR-155 has been found increased in OA chondrocytes, we investigated the effects of high pressure on the expression of the miR-155 host gene Mir155hg. The chondrocyte progenitor cell line ATDC5 was pressurized under hydrostatic pressure up to 25 MPa and the expression of Mir155hg or the resulting micro-RNAs were measured; pharmacological inhibitors were used to identify the signaling pathways involved in the regulation of Mir155hg. We found that Mir155hg is strongly and rapidly up-regulated by high, but not moderate, pressure in chondrocyte progenitor cells. This up-regulation likely involves the membrane channel pannexin-1 and several intracellular signaling molecules including PKC and Src. MiR-155-5p and -3p were also up-regulated by pressure though somewhat later than Mir155hg, and a set of known miR-155-5p target genes, including Ikbke, Smarca4 and Ywhae, was affected by pressure, suggesting that Mir155hg may have important roles in cartilage physiology.
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9
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Diggins NL, Hancock MH. Viral miRNA regulation of host gene expression. Semin Cell Dev Biol 2022; 146:2-19. [PMID: 36463091 PMCID: PMC10101914 DOI: 10.1016/j.semcdb.2022.11.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 11/16/2022] [Accepted: 11/22/2022] [Indexed: 12/05/2022]
Abstract
Viruses have evolved a multitude of mechanisms to combat barriers to productive infection in the host cell. Virally-encoded miRNAs are one such means to regulate host gene expression in ways that benefit the virus lifecycle. miRNAs are small non-coding RNAs that regulate protein expression but do not trigger the adaptive immune response, making them powerful tools encoded by viruses to regulate cellular processes. Diverse viruses encode for miRNAs but little sequence homology exists between miRNAs of different viral species. Despite this, common cellular pathways are targeted for regulation, including apoptosis, immune evasion, cell growth and differentiation. Herein we will highlight the viruses that encode miRNAs and provide mechanistic insight into how viral miRNAs aid in lytic and latent infection by targeting common cellular processes. We also highlight how viral miRNAs can mimic host cell miRNAs as well as how viral miRNAs have evolved to regulate host miRNA expression. These studies dispel the myth that viral miRNAs are subtle regulators of gene expression, and highlight the critical importance of viral miRNAs to the virus lifecycle.
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Affiliation(s)
- Nicole L Diggins
- Vaccine and Gene Therapy Institute, Oregon Health & Science University, Portland, OR, USA
| | - Meaghan H Hancock
- Vaccine and Gene Therapy Institute, Oregon Health & Science University, Portland, OR, USA.
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10
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Downregulation of STAT3 in Epstein-Barr Virus-Positive Hodgkin Lymphoma. Biomedicines 2022; 10:biomedicines10071608. [PMID: 35884913 PMCID: PMC9313380 DOI: 10.3390/biomedicines10071608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/30/2022] [Accepted: 07/04/2022] [Indexed: 11/17/2022] Open
Abstract
STAT3 is a transcription factor which is activated via various signaling transduction pathways or Epstein-Barr virus (EBV) infection and plays an oncogenic role in lymphoid malignancies including Hodgkin lymphoma (HL). The tumor cells of HL are derived from germinal center B-cells and transformed by chromosomal rearrangements, aberrant signal transduction, deregulation of developmental transcription factors, and EBV activity. HL cell lines represent useful models to investigate molecular principles and deduced treatment options of this malignancy. Using cell line L-540, we have recently shown that constitutively activated STAT3 drives aberrant expression of hematopoietic NKL homeobox gene HLX. Here, we analyzed HL cell line AM-HLH which is EBV-positive but, nevertheless, HLX-negative. Consistently, AM-HLH expressed decreased levels of STAT3 proteins which were additionally inactivated and located in the cytoplasm. Combined genomic and expression profiling data revealed several amplified and overexpressed gene candidates involved in opposed regulation of STAT3 and EBV. Corresponding knockdown studies demonstrated that IRF4 and NFATC2 inhibited STAT3 expression. MIR155 (activated by STAT3) and SPIB (repressed by HLX) showed reduced and elevated expression levels in AM-HLH, respectively. However, treatment with IL6 or IL27 activated STAT3, elevated expression of HLX and MIR155, and inhibited IRF4. Taken together, this cell line deals with two conflicting oncogenic drivers, namely, JAK2-STAT3 signaling and EBV infection, but is sensitive to switch after cytokine stimulation. Thus, AM-HLH represents a unique cell line model to study the pathogenic roles of STAT3 and EBV and their therapeutic implications in HL.
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11
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MicroRNA Regulation of Human Herpesvirus Latency. Viruses 2022; 14:v14061215. [PMID: 35746686 PMCID: PMC9231095 DOI: 10.3390/v14061215] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 05/29/2022] [Accepted: 05/30/2022] [Indexed: 12/04/2022] Open
Abstract
Herpesviruses are ubiquitous human pathogens. After productive (lytic) infection, all human herpesviruses are able to establish life-long latent infection and reactivate from it. Latent infection entails suppression of viral replication, maintenance of the viral genome in infected cells, and the ability to reactivate. Most human herpesviruses encode microRNAs (miRNAs) that regulate these processes during latency. Meanwhile, cellular miRNAs are hijacked by herpesviruses to participate in these processes. The viral or cellular miRNAs either directly target viral transcripts or indirectly affect viral infection through host pathways. These findings shed light on the molecular determinants that control the lytic-latent switch and may lead to novel therapeutics targeting latent infection. We discuss the multiple mechanisms by which miRNAs regulate herpesvirus latency, focusing on the patterns in these mechanisms.
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Abstract
We report on a deregulatory activity on microRNA (miRNA) biogenesis by the FMS-like tyrosine kinase 3 (FLT3)-internal tandem duplication (ITD) in acute myeloid leukemia. FLT3-ITD provides a divergent signal for concurrent and aberrant miR-155 up-regulation and miR-126 down-regulation via a series of miRNA–protein regulatory loops interconnected through SH2-containing inositol phosphatase 1 (SHIP1)/phosphor-protein kinase B (AKT)/Sprouty related EVH1 domain containing 1 (SPRED1) signaling. This divergent input signal eventually converges and amplifies an output signal for leukemic growth. MiR-126 and miR-155 are key microRNAs (miRNAs) that regulate, respectively, hematopoietic cell quiescence and proliferation. Herein we showed that in acute myeloid leukemia (AML), the biogenesis of these two miRNAs is interconnected through a network of regulatory loops driven by the FMS-like tyrosine kinase 3-internal tandem duplication (FLT3-ITD). In fact, FLT3-ITD induces the expression of miR-155 through a noncanonical mechanism of miRNA biogenesis that implicates cytoplasmic Drosha ribonuclease III (DROSHA). In turn, miR-155 down-regulates SH2-containing inositol phosphatase 1 (SHIP1), thereby increasing phosphor-protein kinase B (AKT) that in turn serine-phosphorylates, stabilizes, and activates Sprouty related EVH1 domain containing 1 (SPRED1). Activated SPRED1 inhibits the RAN/XPO5 complex and blocks the nucleus-to-cytoplasm transport of pre-miR-126, which cannot then complete the last steps of biogenesis. The net result is aberrantly low levels of mature miR-126 that allow quiescent leukemia blasts to be recruited into the cell cycle and proliferate. Thus, miR-126 down-regulation in proliferating AML blasts is downstream of FLT3-ITD–dependent miR-155 expression that initiates a complex circuit of concatenated regulatory feedback (i.e., miR-126/SPRED1, miR-155/human dead-box protein 3 [DDX3X]) and feed-forward (i.e., miR-155/SHIP1/AKT/miR-126) regulatory loops that eventually converge into an output signal for leukemic growth.
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13
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Sadashiv, Sharma P, Dwivedi S, Tiwari S, Singh PK, Pal A, Kumar S. Micro (mi) RNA and Diabetic Retinopathy. Indian J Clin Biochem 2022; 37:267-274. [DOI: 10.1007/s12291-021-01018-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Accepted: 11/30/2021] [Indexed: 11/24/2022]
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14
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Wang C, Xue M, Wu P, Wang H, Liu Z, Wu G, Liu P, Wang K, Xu W, Feng L. Coronavirus transmissible gastroenteritis virus antagonizes the antiviral effect of the microRNA miR-27b via the IRE1 pathway. SCIENCE CHINA. LIFE SCIENCES 2021; 65:1413-1429. [PMID: 34826094 PMCID: PMC8617553 DOI: 10.1007/s11427-021-1967-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 06/18/2021] [Indexed: 12/16/2022]
Abstract
Although the functional parameters of microRNAs (miRNAs) have been explored to some extent, the roles of these molecules in coronavirus infection and the regulatory mechanism of miRNAs in virus infection are still unclear. Transmissible gastroenteritis virus (TGEV) is an enteropathgenic coronavirus and causes high morbidity and mortality in suckling piglets. Here, we demonstrated that microRNA-27b-3p (miR-27b-3p) suppressed TGEV replication by directly targeting porcine suppressor of cytokine signaling 6 (SOCS6), while TGEV infection downregulated miR-27b-3p expression in swine testicular (ST) cells and in piglets. Mechanistically, the decrease of miR-27b-3p expression during TGEV infection was mediated by the activated inositol-requiring enzyme 1 (IRE1) pathway of the endoplasmic reticulum (ER) stress. Further studies showed that when ER stress was induced by TGEV, IRE1 acted as an RNase activated by autophosphorylation and unconventionally spliced mRNA encoding a potent transcription factor, X-box-binding protein 1 (Xbp1s). Xbp1s inhibited the transcription of miR-27 and ultimately reduced the production of miR-27b-3p. Therefore, our findings indicate that TGEV inhibits the expression of an anti-coronavirus microRNA through the IRE1 pathway and suggest a novel way in which coronavirus regulates the host cell response to infection.
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Affiliation(s)
- Changlin Wang
- Department of Urology, the Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, China.,NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China
| | - Mei Xue
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Peng Wu
- Department of Urology, the Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, China.,NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China
| | - Honglei Wang
- Department of Urology, the Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, China.,NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China
| | - Zhongqing Liu
- Department of Urology, the Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, China.,NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China
| | - Guangzheng Wu
- Department of Urology, the Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, China.,NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China
| | - Pinghuang Liu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Keliang Wang
- Department of Urology, the Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, China. .,NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China.
| | - Wanhai Xu
- Department of Urology, the Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, China. .,NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China.
| | - Li Feng
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China.
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15
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Nguyen LXT, Zhang B, Hoang DH, Zhao D, Wang H, Wu H, Su YL, Dong H, Rodriguez-Rodriguez S, Armstrong B, Ghoda LY, Perrotti D, Pichiorri F, Chen J, Li L, Kortylewski M, Rockne RC, Kuo YH, Khaled S, Carlesso N, Marcucci G. Cytoplasmic DROSHA and non-canonical mechanisms of MiR-155 biogenesis in FLT3-ITD acute myeloid leukemia. Leukemia 2021; 35:2285-2298. [PMID: 33589748 PMCID: PMC8973317 DOI: 10.1038/s41375-021-01166-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/07/2021] [Accepted: 01/26/2021] [Indexed: 01/29/2023]
Abstract
We report here on a novel pro-leukemogenic role of FMS-like tyrosine kinase 3-internal tandem duplication (FLT3-ITD) that interferes with microRNAs (miRNAs) biogenesis in acute myeloid leukemia (AML) blasts. We showed that FLT3-ITD interferes with the canonical biogenesis of intron-hosted miRNAs such as miR-126, by phosphorylating SPRED1 protein and inhibiting the "gatekeeper" Exportin 5 (XPO5)/RAN-GTP complex that regulates the nucleus-to-cytoplasm transport of pre-miRNAs for completion of maturation into mature miRNAs. Of note, despite the blockage of "canonical" miRNA biogenesis, miR-155 remains upregulated in FLT3-ITD+ AML blasts, suggesting activation of alternative mechanisms of miRNA biogenesis that circumvent the XPO5/RAN-GTP blockage. MiR-155, a BIC-155 long noncoding (lnc) RNA-hosted oncogenic miRNA, has previously been implicated in FLT3-ITD+ AML blast hyperproliferation. We showed that FLT3-ITD upregulates miR-155 by inhibiting DDX3X, a protein implicated in the splicing of lncRNAs, via p-AKT. Inhibition of DDX3X increases unspliced BIC-155 that is then shuttled by NXF1 from the nucleus to the cytoplasm, where it is processed into mature miR-155 by cytoplasmic DROSHA, thereby bypassing the XPO5/RAN-GTP blockage via "non-canonical" mechanisms of miRNA biogenesis.
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Affiliation(s)
- Le Xuan Truong Nguyen
- Gehr Family Center for Leukemia Research, Hematology Malignancies and Stem Cell Transplantation Institute, City of Hope Medical Center, Duarte, CA, USA.
| | - Bin Zhang
- Gehr Family Center for Leukemia Research, Hematology Malignancies and Stem Cell Transplantation Institute, City of Hope Medical Center, Duarte, CA, USA
| | - Dinh Hoa Hoang
- Gehr Family Center for Leukemia Research, Hematology Malignancies and Stem Cell Transplantation Institute, City of Hope Medical Center, Duarte, CA, USA
| | - Dandan Zhao
- Gehr Family Center for Leukemia Research, Hematology Malignancies and Stem Cell Transplantation Institute, City of Hope Medical Center, Duarte, CA, USA
| | - Huafeng Wang
- Gehr Family Center for Leukemia Research, Hematology Malignancies and Stem Cell Transplantation Institute, City of Hope Medical Center, Duarte, CA, USA
| | - Herman Wu
- Gehr Family Center for Leukemia Research, Hematology Malignancies and Stem Cell Transplantation Institute, City of Hope Medical Center, Duarte, CA, USA
| | - Yu-Lin Su
- Department of Immuno-Oncology, City of Hope Medical Center, Duarte, CA, USA
| | - Haojie Dong
- Gehr Family Center for Leukemia Research, Hematology Malignancies and Stem Cell Transplantation Institute, City of Hope Medical Center, Duarte, CA, USA
| | - Sonia Rodriguez-Rodriguez
- Gehr Family Center for Leukemia Research, Hematology Malignancies and Stem Cell Transplantation Institute, City of Hope Medical Center, Duarte, CA, USA
| | - Brian Armstrong
- Light Microscopy Core, Beckman Research Institute, City of Hope Medical Center, Duarte, CA, USA
| | - Lucy Y Ghoda
- Gehr Family Center for Leukemia Research, Hematology Malignancies and Stem Cell Transplantation Institute, City of Hope Medical Center, Duarte, CA, USA
| | - Danilo Perrotti
- Department of Medicine, Biochemistry and Molecular Biology and the Marlene and Greenebaum Comprehensive Cancer Center, University of Maryland, Baltimore, MD, USA
| | - Flavia Pichiorri
- Gehr Family Center for Leukemia Research, Hematology Malignancies and Stem Cell Transplantation Institute, City of Hope Medical Center, Duarte, CA, USA
| | - Jianjun Chen
- Department of System Biology, City of Hope Medical Center, Duarte, CA, USA
| | - Ling Li
- Gehr Family Center for Leukemia Research, Hematology Malignancies and Stem Cell Transplantation Institute, City of Hope Medical Center, Duarte, CA, USA
| | - Marcin Kortylewski
- Department of Immuno-Oncology, City of Hope Medical Center, Duarte, CA, USA
| | - Russell C Rockne
- Gehr Family Center for Leukemia Research, Hematology Malignancies and Stem Cell Transplantation Institute, City of Hope Medical Center, Duarte, CA, USA
| | - Ya-Huei Kuo
- Gehr Family Center for Leukemia Research, Hematology Malignancies and Stem Cell Transplantation Institute, City of Hope Medical Center, Duarte, CA, USA
| | - Samer Khaled
- Gehr Family Center for Leukemia Research, Hematology Malignancies and Stem Cell Transplantation Institute, City of Hope Medical Center, Duarte, CA, USA
| | - Nadia Carlesso
- Gehr Family Center for Leukemia Research, Hematology Malignancies and Stem Cell Transplantation Institute, City of Hope Medical Center, Duarte, CA, USA
| | - Guido Marcucci
- Gehr Family Center for Leukemia Research, Hematology Malignancies and Stem Cell Transplantation Institute, City of Hope Medical Center, Duarte, CA, USA.
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16
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Liu Y, Wan X, Yuan Y, Huang J, Jiang Y, Zhao K, Wang Y, Liu Y, Wang Q, Jin H. Opposite effects of miR-155 in the initial and later stages of lipopolysaccharide (LPS)-induced inflammatory response. J Zhejiang Univ Sci B 2021; 22:590-598. [PMID: 34269011 DOI: 10.1631/jzus.b2000826] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Although microRNA-155 (miR-155) is considered a pro-inflammatory mediator, cumulative evidence indicates that it also has anti-inflammatory effects in macrophages and dendritic cells. In this study, we identified the dramatic expression changes of more than half of potential miR-155-targeted genes upon lipopolysaccharide (LPS) stimulation; 223 genes were down-regulated and 85 genes were up-regulated, including suppressor of cytokine signaling 1 (SOCS1) and transforming growth factor-β-activated kinase 1-binding protein 2 (TAB2), two well-known genes involved in miR-155-mediated regulation of the Toll-like receptor 4 (TLR4) signaling pathway. We also found that miR-155 acted as an anti-inflammatory mediator in the initial stage of LPS-induced inflammatory response mainly through repressing TAB2 protein translation, and as a pro-inflammatory mediator by down-regulating SOCS1 in the later stage. Meanwhile, overexpression of TAB2 3' untranslated region (UTR) in macrophages promoted the development of endotoxin tolerance by competing for binding with miR-155, which resulted in an elevated expression level of SOCS1 protein. These findings provide new insights for understanding the regulatory mechanisms in fine-tuning of LPS-induced innate immune response.
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Affiliation(s)
- Yuhua Liu
- Laboratory of Cancer Biology, Key Lab of Biotherapy in Zhejiang, Sir Run Run Shaw Hospital, Medical School of Zhejiang University, Hangzhou 310016, China.,Department of Clinical Laboratory, the Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, China
| | - Xiaopeng Wan
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Yuan Yuan
- Department of Clinical Laboratory, the Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, China
| | - Jingjing Huang
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Yijia Jiang
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Kaiyue Zhao
- Department of Radiology, the Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, China
| | - Yan Wang
- Department of Clinical Laboratory, the Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, China
| | - Yang Liu
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Qingqing Wang
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Hongchuan Jin
- Laboratory of Cancer Biology, Key Lab of Biotherapy in Zhejiang, Sir Run Run Shaw Hospital, Medical School of Zhejiang University, Hangzhou 310016, China
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17
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Brand H, Barnabas GD, Sapoznik S, Bahar-Shany K, Pozniak Y, Yung Y, Hourvitz A, Geiger T, Jacob-Hirsch J, Levanon K. NF-κB-miR-155 axis activation mediates ovulation-induced oncogenic effects in fallopian tube epithelium. Carcinogenesis 2021; 41:1703-1712. [PMID: 32614381 DOI: 10.1093/carcin/bgaa068] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 06/15/2020] [Accepted: 06/24/2020] [Indexed: 02/06/2023] Open
Abstract
The fallopian tube secretory epithelial cells (FTSECs) are the cell-of-origin of most high-grade serous ovarian carcinomas (HGSOC). FTSECs are repeatedly exposed to inflammation induced by follicular fluid (FF) that is released with every ovulation cycle throughout a woman's reproductive years. Uninterrupted ovulation cycles are an established risk factor for HGSOC. Stimuli present in the FF induce an inflammatory environment which may cause DNA damage eventually leading to serous tumorigenesis. With the aim of elucidating possible mechanistic pathways, we established an 'ex vivo persistent ovulation model' mimicking the repeated exposure of human benign fallopian tube epithelium (FTE) to FF. We performed mass spectrometry analysis of the secretome of the ex vivo cultures as well as confirmatory targeted expressional and functional analyses. We demonstrated activation of the NF-κB pathway and upregulation of miR-155 following short-term exposure of FTE to human FF. Increased expression of miR-155 was also detected in primary HGSOC tumors compared with benign primary human FTE and corresponded with changes in the expression of miR-155 target genes. The phenotype of miR-155 overexpression in FTSEC cell line is of increased migratory and altered adhesion capacities. Overall, activation of the NF-κB-miR-155 axis in FTE may represent a possible link between ovulation-induced inflammation, DNA damage, and transcriptional changes that may eventually lead to serious carcinogenesis.
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Affiliation(s)
- Hadar Brand
- Sheba Cancer Research Center, Chaim Sheba Medical Center, Ramat Gan, Israel.,Sackler Faculty of Medicine, Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, Israel
| | - Georgina D Barnabas
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, Israel
| | - Stav Sapoznik
- Sheba Cancer Research Center, Chaim Sheba Medical Center, Ramat Gan, Israel
| | - Keren Bahar-Shany
- Sheba Cancer Research Center, Chaim Sheba Medical Center, Ramat Gan, Israel
| | - Yair Pozniak
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, Israel
| | - Yuval Yung
- IVF Unit and Reproduction Lab, Department of Obstetrics and Gynecology, Chaim Sheba Medical Center, Ramat Gan, Israel
| | - Ariel Hourvitz
- Sackler Faculty of Medicine, Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, Israel.,IVF Unit and Reproduction Lab, Department of Obstetrics and Gynecology, Chaim Sheba Medical Center, Ramat Gan, Israel
| | - Tamar Geiger
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, Israel
| | | | - Keren Levanon
- Sheba Cancer Research Center, Chaim Sheba Medical Center, Ramat Gan, Israel.,Sackler Faculty of Medicine, Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, Israel
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18
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Halder LD, Babych S, Palme DI, Mansouri-Ghahnavieh E, Ivanov L, Ashonibare V, Langenhorst D, Prusty B, Rambach G, Wich M, Trinks N, Blango MG, Kornitzer D, Terpitz U, Speth C, Jungnickel B, Beyersdorf N, Zipfel PF, Brakhage AA, Skerka C. Candida albicans Induces Cross-Kingdom miRNA Trafficking in Human Monocytes To Promote Fungal Growth. mBio 2021; 13:e0356321. [PMID: 35132877 PMCID: PMC8822622 DOI: 10.1128/mbio.03563-21] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 12/08/2021] [Indexed: 12/16/2022] Open
Abstract
In response to infections, human immune cells release extracellular vesicles (EVs) that carry a situationally adapted cocktail of proteins and nucleic acids, including microRNAs (miRNAs), to coordinate the immune response. In this study, we identified hsa-miR-21-5p and hsa-miR-24-3p as the most common miRNAs in exosomes released by human monocytes in response to the pathogenic fungus Candida albicans. Functional analysis of miRNAs revealed that hsa-miR-24-3p, but not hsa-miR-21-5p, acted across species and kingdoms, entering C. albicans and inducing fungal cell growth by inhibiting translation of the cyclin-dependent kinase inhibitor Sol1. Packaging of hsa-miR-24-3p into monocyte exosomes required binding of fungal soluble β-glucan to complement receptor 3 (CR3) and binding of mannan to Toll-like receptor 4 (TLR4), resulting in receptor colocalization. Together, our in vitro and in vivo findings reveal a novel cross-species evasion mechanism by which C. albicans exploits a human miRNA to promote fungal growth and survival in the host. IMPORTANCE Over the last decade, communication between immune cells by extracellular vesicle-associated miRNAs has emerged as an important regulator of the coordinated immune response. Therefore, a thorough understanding of the conversation occurring via miRNAs, especially during infection, may provide novel insights into both the host reaction to the microbe as well as the microbial response. This study provides evidence that the pathogenic fungus C. albicans communicates with human monocytes and induces the release of a human miRNA that promotes fungal growth. This mechanism represents an unexpected cross-species interaction and implies that an inhibition of specific miRNAs offers new possibilities for the treatment of human fungal infections.
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Affiliation(s)
- Luke D. Halder
- Department of Infection Biology, Leibniz Institute for Natural Product Research and Infection Biology, Jena, Germany
| | - Svitlana Babych
- Department of Infection Biology, Leibniz Institute for Natural Product Research and Infection Biology, Jena, Germany
| | - Diana I. Palme
- Department of Infection Biology, Leibniz Institute for Natural Product Research and Infection Biology, Jena, Germany
| | - Elham Mansouri-Ghahnavieh
- Department of Infection Biology, Leibniz Institute for Natural Product Research and Infection Biology, Jena, Germany
| | - Lia Ivanov
- Department of Infection Biology, Leibniz Institute for Natural Product Research and Infection Biology, Jena, Germany
| | - Victory Ashonibare
- Department of Infection Biology, Leibniz Institute for Natural Product Research and Infection Biology, Jena, Germany
| | - Daniela Langenhorst
- Institute for Virology and Immunobiology, University of Würzburg, Würzburg, Germany
| | - Bhupesh Prusty
- Institute for Virology and Immunobiology, University of Würzburg, Würzburg, Germany
| | - Günter Rambach
- Division of Hygiene and Medical Microbiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Melissa Wich
- Department of Cell Biology, Institute of Biochemistry and Biophysics, Friedrich Schiller University, Jena, Germany
| | - Nora Trinks
- Department of Biotechnology and Biophysics, University of Würzburg, Würzburg, Germany
| | - Matthew G. Blango
- Junior Research Group RNA Biology of Fungal Infections, Leibniz Institute for Natural Product Research and Infection Biology, Jena, Germany
| | - Daniel Kornitzer
- Department of Molecular Microbiology, B. Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Ulrich Terpitz
- Department of Biotechnology and Biophysics, University of Würzburg, Würzburg, Germany
| | - Cornelia Speth
- Division of Hygiene and Medical Microbiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Berit Jungnickel
- Department of Cell Biology, Institute of Biochemistry and Biophysics, Friedrich Schiller University, Jena, Germany
| | - Niklas Beyersdorf
- Institute for Virology and Immunobiology, University of Würzburg, Würzburg, Germany
| | - Peter F. Zipfel
- Department of Infection Biology, Leibniz Institute for Natural Product Research and Infection Biology, Jena, Germany
- Friedrich Schiller University, Jena, Germany
| | - Axel A. Brakhage
- Friedrich Schiller University, Jena, Germany
- Department of Molecular and Applied Microbiology, Leibniz Institute for Natural Product Research and Infection Biology, Jena, Germany
| | - Christine Skerka
- Department of Infection Biology, Leibniz Institute for Natural Product Research and Infection Biology, Jena, Germany
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19
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Wang J, Li K, Zhang X, Li G, Liu T, Wu X, Brown SL, Zhou L, Mi QS. MicroRNA-155 Controls iNKT Cell Development and Lineage Differentiation by Coordinating Multiple Regulating Pathways. Front Cell Dev Biol 2021; 8:619220. [PMID: 33585457 PMCID: PMC7874147 DOI: 10.3389/fcell.2020.619220] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 12/04/2020] [Indexed: 12/15/2022] Open
Abstract
The development of invariant natural killer T (iNKT) cells requires a well-attuned set of transcription factors, but how these factors are regulated and coordinated remains poorly understood. MicroRNA-155 (miR-155) is a key regulator of numerous cellular processes that affects cell development and homeostasis. Here, we found that miR-155 was highly expressed in early iNKT cells upon thymic selection, and then its expression is gradually downregulated during iNKT cell development. However, the mice with miR-155 germline deletion had normal iNKT cell development. To address if downregulated miR-155 is required for iNKT cell development, we made a CD4Cre.miR-155 knock-in (KI) mouse model with miR-155 conditional overexpression in the T cell lineage. Upregulated miR-155 led to interruption of iNKT cell development, diminished iNKT17 and iNKT1 cells, augmented iNKT2 cells, and these defects were cell intrinsic. Furthermore, defective iNKT cells in miR-155KI mice resulted in the secondary innate-like CD8 T cell development. Mechanistically, miR-155 modulated multiple targets and signaling pathways to fine tune iNKT cell development. MiR-155 modulated Jarid2, a critical component of a histone modification complex, and Tab2, the upstream activation kinase complex component of NF-κB, which function additively in iNKT development and in promoting balanced iNKT1/iNKT2 differentiation. In addition, miR-155 also targeted Rictor, a signature component of mTORC2 that controls iNKT17 differentiation. Taken together, our results indicate that miR-155 serves as a key epigenetic regulator, coordinating multiple signaling pathways and transcriptional programs to precisely regulate iNKT cell development and functional lineage, as well as secondary innate CD8 T cell development.
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Affiliation(s)
- Jie Wang
- Center for Cutaneous Biology and Immunology Research, Department of Dermatology, Henry Ford Health System, Detroit, MI, United States.,Immunology Research Program, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, MI, United States
| | - Kai Li
- Center for Cutaneous Biology and Immunology Research, Department of Dermatology, Henry Ford Health System, Detroit, MI, United States.,Immunology Research Program, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, MI, United States
| | - Xilin Zhang
- Center for Cutaneous Biology and Immunology Research, Department of Dermatology, Henry Ford Health System, Detroit, MI, United States.,Immunology Research Program, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, MI, United States
| | - Guihua Li
- Center for Cutaneous Biology and Immunology Research, Department of Dermatology, Henry Ford Health System, Detroit, MI, United States.,Immunology Research Program, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, MI, United States
| | - Tingting Liu
- Center for Cutaneous Biology and Immunology Research, Department of Dermatology, Henry Ford Health System, Detroit, MI, United States.,Immunology Research Program, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, MI, United States
| | - Xiaojun Wu
- Center for Cutaneous Biology and Immunology Research, Department of Dermatology, Henry Ford Health System, Detroit, MI, United States.,Immunology Research Program, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, MI, United States
| | - Stephen L Brown
- Department of Radiation Oncology, Henry Ford Health System, Detroit, MI, United States
| | - Li Zhou
- Center for Cutaneous Biology and Immunology Research, Department of Dermatology, Henry Ford Health System, Detroit, MI, United States.,Immunology Research Program, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, MI, United States
| | - Qing-Sheng Mi
- Center for Cutaneous Biology and Immunology Research, Department of Dermatology, Henry Ford Health System, Detroit, MI, United States.,Immunology Research Program, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, MI, United States
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20
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Cao YY, Wang Z, Wang ZH, Jiang XG, Lu WH. Inhibition of miR-155 alleviates sepsis-induced inflammation and intestinal barrier dysfunction by inactivating NF-κB signaling. Int Immunopharmacol 2021; 90:107218. [PMID: 33296782 DOI: 10.1016/j.intimp.2020.107218] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 11/14/2020] [Accepted: 11/17/2020] [Indexed: 12/25/2022]
Abstract
MicroRNA-155 (miR-155) is implicated in the pathological processes of sepsis. However, the function and regulatory mechanism of miR-155 in sepsis-induced inflammation and intestinal barrier dysfunction remain unknown. In this study, mouse models of sepsis were established by caecal ligation and puncture (CLP). To reduce miR-155 expression, the mice were injected for three consecutive days with an miR-155 inhibitor (80 mg/kg) before CLP. The serum DAO concentration was measured by ELISA, and histological changes in the intestine were identified by H&E staining 24 h after CLP. FITC-dextran assays were used to evaluate intestinal permeability. MiR-155 gene expression was evaluated with RT-PCR, and relative protein expression was assessed by Western blotting. NCM460 cells were transfected with an miR-155 mimic/miR-155 inhibitor or pretreated with an NF-κB inhibitor before LPS treatment, and the cytokines levels, miR-155 gene expression and relative protein expression were measured. Sepsis increased miR-155, DAO and FITC-dextran levels and reduced Occludin and ZO-1 expression. Mice injected with the miR-155 inhibitor recovered from the damages. Transfection of NCM460 cells with the miR-155 mimic elevated the NF-κB (P65) and p-NF-κB (p-P65) localization and expression in the nucleus, which was reversed by the miR-155 inhibitor. Pretreatment with an NF-κB inhibitor suppressed inflammation, improved cell permeability to FITC-dextran and increased Occludin and ZO-1 levels. Transfection with the miR-155 inhibitor decreased TNF-α and IL-6 levels, reduced cell permeability to FITC-dextran and increased ZO-1 and Occludin expression. The effects induced by transfection with the miR-155 mimic, including elevated TNF-α and IL-6 levels, hyperpermeability to FITC-dextran and reduced ZO-1 and Occludin expression, were partly rescued by pretreatment with the NF-κB inhibitor. These findings reveal that the miR-155 inhibitor alleviates inflammation and intestinal barrier dysfunction by inactivating NF-κB signaling during sepsis.
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Affiliation(s)
- Ying-Ya Cao
- Department of Intensive Care Unit, The First Affiliated Hospital of Wannan Medical College, Wuhu 241001, Anhui, China.
| | - Zhen Wang
- Department of Intensive Care Unit, The First Affiliated Hospital of Wannan Medical College, Wuhu 241001, Anhui, China.
| | - Zhong-Han Wang
- Department of Intensive Care Unit, The First Affiliated Hospital of Wannan Medical College, Wuhu 241001, Anhui, China.
| | - Xiao-Gan Jiang
- Department of Intensive Care Unit, The First Affiliated Hospital of Wannan Medical College, Wuhu 241001, Anhui, China.
| | - Wei-Hua Lu
- Department of Intensive Care Unit, The First Affiliated Hospital of Wannan Medical College, Wuhu 241001, Anhui, China.
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21
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Santpere G, Telford M, Andrés-Benito P, Navarro A, Ferrer I. The Presence of Human Herpesvirus 6 in the Brain in Health and Disease. Biomolecules 2020; 10:E1520. [PMID: 33172107 PMCID: PMC7694807 DOI: 10.3390/biom10111520] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 11/03/2020] [Accepted: 11/05/2020] [Indexed: 01/03/2023] Open
Abstract
The human herpesvirus 6 (HHV-6) -A and -B are two dsDNA beta-herpesviruses infectingalmost the entire worldwide population. These viruses have been implicated in multipleneurological conditions in individuals of various ages and immunological status, includingencephalitis, epilepsy, and febrile seizures. HHV-6s have also been suggested as playing a role inthe etiology of neurodegenerative diseases such as multiple sclerosis and Alzheimer's disease. Theapparent robustness of these suggested associations is contingent on the accuracy of HHV-6detection in the nervous system. The effort of more than three decades of researching HHV-6 in thebrain has yielded numerous observations, albeit using variable technical approaches in terms oftissue preservation, detection techniques, sample sizes, brain regions, and comorbidities. In thisreview, we aimed to summarize current knowledge about the entry routes and direct presence ofHHV-6 in the brain parenchyma at the level of DNA, RNA, proteins, and specific cell types, inhealthy subjects and in those with neurological conditions. We also discuss recent findings relatedto the presence of HHV-6 in the brains of patients with Alzheimer's disease in light of availableevidence.
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Affiliation(s)
- Gabriel Santpere
- Neurogenomics Group, Research Programme on Biomedical Informatics (GRIB), Hospital del Mar Medical Research Institute (IMIM), DCEXS, Universitat Pompeu Fabra, 08003 Barcelona, Catalonia, Spain
| | - Marco Telford
- Institute of Evolutionary Biology (UPF-CSIC), Departament de Ciències Experimentals i la Salut, Universitat Pompeu Fabra, PRBB, 08003 Barcelona, Catalonia, Spain; (M.T.); (A.N.)
| | - Pol Andrés-Benito
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain;
| | - Arcadi Navarro
- Institute of Evolutionary Biology (UPF-CSIC), Departament de Ciències Experimentals i la Salut, Universitat Pompeu Fabra, PRBB, 08003 Barcelona, Catalonia, Spain; (M.T.); (A.N.)
- Catalan Institution of Research and Advanced Studies (ICREA), Passeig de Lluís Companys 23, 08010 Barcelona, Spain
- Centre for Genomic Regulation (CRG), Barcelona Institute of Science and Technology (BIST), Carrer del Dr. Aiguader 88, 08003 Barcelona, Spain
- Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation, Wellington 30, 08005 Barcelona, Spain
| | - Isidre Ferrer
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain;
- Department of Pathology and Experimental Therapeutics, University of Barcelona, Hospitalet de Llobregat, 08907 Barcelona, Spain
- Bellvitge University Hospital, IDIBELL (Bellvitge Biomedical Research Centre), Hospitalet de Llobregat, 08908 Barcelona, Spain
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22
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Li J, Zou J, Wan X, Sun C, Peng F, Chu Z, Hu Y. The Role of Noncoding RNAs in B-Cell Lymphoma. Front Oncol 2020; 10:577890. [PMID: 33194698 PMCID: PMC7645065 DOI: 10.3389/fonc.2020.577890] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 08/20/2020] [Indexed: 12/19/2022] Open
Abstract
In recent years, emerging evidence has suggested that noncoding RNAs (ncRNAs) participate in nearly every aspect of biological processes and play a crucial role in the genesis and progression of numerous tumors, including B-cell lymphoma. The exploration of ncRNA dysregulations and their functions in B-cell lymphoma provides new insights into lymphoma pathogenesis and is essential for indicating future clinical trials and optimizing the diagnostic and therapeutic strategies. In this review, we summarize the role of ncRNAs in B-cell lymphoma and discuss their potential in clinical applications.
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Affiliation(s)
- Jingwen Li
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jing Zou
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoyue Wan
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chunyan Sun
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Collaborative Innovation Center of Hematology, Huazhong University of Science and Technology, Wuhan, China
| | - Fei Peng
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhangbo Chu
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu Hu
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Collaborative Innovation Center of Hematology, Huazhong University of Science and Technology, Wuhan, China
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23
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Readhead B, Haure-Mirande JV, Mastroeni D, Audrain M, Fanutza T, Kim SH, Blitzer RD, Gandy S, Dudley JT, Ehrlich ME. miR155 regulation of behavior, neuropathology, and cortical transcriptomics in Alzheimer's disease. Acta Neuropathol 2020; 140:295-315. [PMID: 32666270 PMCID: PMC8414561 DOI: 10.1007/s00401-020-02185-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 06/24/2020] [Indexed: 12/19/2022]
Abstract
MicroRNAs are recognized as important regulators of many facets of physiological brain function while also being implicated in the pathogenesis of several neurological disorders. Dysregulation of miR155 is widely reported across a variety of neurodegenerative conditions, including Alzheimer's disease (AD), Parkinson's disease, amyotrophic lateral sclerosis, and traumatic brain injury. In previous work, we observed that experimentally validated miR155 gene targets were consistently enriched among genes identified as differentially expressed across multiple brain tissue and disease contexts. In particular, we found that human herpesvirus-6A (HHV-6A) suppressed miR155, recapitulating reports of miR155 inhibition by HHV-6A in infected T-cells, thyrocytes, and natural killer cells. In earlier studies, we also reported the effects of constitutive deletion of miR155 on accelerating the accumulation of Aβ deposits in 4-month-old APP/PSEN1 mice. Herein, we complete the cumulative characterization of transcriptomic, electrophysiological, neuropathological, and learning behavior profiles from 4-, 8- and 10-month-old WT and APP/PSEN1 mice in the absence or presence of miR155. We also integrated human post-mortem brain RNA-sequences from four independent AD consortium studies, together comprising 928 samples collected from six brain regions. We report that gene expression perturbations associated with miR155 deletion in mouse cortex are in aggregate observed to be concordant with AD-associated changes across these independent human late-onset AD (LOAD) data sets, supporting the relevance of our findings to human disease. LOAD has recently been formulated as the clinicopathological manifestation of a multiplex of genetic underpinnings and pathophysiological mechanisms. Our accumulated data are consistent with such a formulation, indicating that miR155 may be uniquely positioned at the intersection of at least four components of this LOAD "multiplex": (1) innate immune response pathways; (2) viral response gene networks; (3) synaptic pathology; and (4) proamyloidogenic pathways involving the amyloid β peptide (Aβ).
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Affiliation(s)
- Ben Readhead
- Arizona State University-Banner Neurodegenerative Disease Research Center, Arizona State University, Tempe, AZ, 85281, USA
- Icahn Institute of Genomic Sciences and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | | | - Diego Mastroeni
- Arizona State University-Banner Neurodegenerative Disease Research Center, Arizona State University, Tempe, AZ, 85281, USA
| | - Mickael Audrain
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Tomas Fanutza
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Soong H Kim
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Robert D Blitzer
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Sam Gandy
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Alzheimer's Disease Research Center, Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Mount Sinai Center for Cognitive Health and NFL Neurological Care, Department of Neurology, New York, NY, 10029, USA
- James J. Peters VA Medical Center, 130 West Kingsbridge Road, New York, NY, 10468, USA
| | - Joel T Dudley
- Icahn Institute of Genomic Sciences and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA.
| | - Michelle E Ehrlich
- Icahn Institute of Genomic Sciences and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA.
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA.
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA.
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24
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Bridgewater HE, Date KL, O’Neil JD, Hu C, Arrand JR, Dawson CW, Young LS. The Epstein-Barr Virus-Encoded EBNA1 Protein Activates the Bone Morphogenic Protein (BMP) Signalling Pathway to Promote Carcinoma Cell Migration. Pathogens 2020; 9:pathogens9070594. [PMID: 32708289 PMCID: PMC7400503 DOI: 10.3390/pathogens9070594] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 07/15/2020] [Accepted: 07/17/2020] [Indexed: 12/18/2022] Open
Abstract
The Epstein-Barr virus (EBV)-encoded nuclear antigen 1 (EBNA1) protein is expressed in all virus-associated malignancies, where it performs an essential role in the maintenance, replication and transcription of the EBV genome. In recent years, it has become apparent that EBNA1 can also influence cellular gene transcription. Here, we demonstrate that EBNA1 is able to stimulate the expression of the Transforming growth factor-beta (TGFβ) superfamily member, bone morphogenic protein 2 (BMP2), with consequential activation of the BMP signalling pathway in carcinoma cell lines. We show that BMP pathway activation is associated with an increase in the migratory capacity of carcinoma cells, an effect that can be ablated by the BMP antagonist, Noggin. Gene expression profiling of authentic EBV-positive nasopharyngeal carcinoma (NPC) tumours revealed the consistent presence of BMP ligands, established BMP pathway effectors and putative target genes, constituting a prominent BMP “signature” in this virus-associated cancer. Our findings show that EBNA1 is the major viral-encoded protein responsible for activating the BMP signalling pathway in carcinoma cells and supports a role for this pathway in promoting cell migration and possibly, metastatic spread.
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Affiliation(s)
- Hannah E. Bridgewater
- Warwick Medical School, Gibbet Hill Campus, University of Warwick, Coventry CV4 7AL, UK; (H.E.B.); (C.W.D.)
| | - Kathryn L. Date
- Institute for Cancer & Genomic Sciences, College of Medicine & Dentistry, University of Birmingham, Birmingham B15 2TT, UK; (K.L.D.); (J.D.O.); (C.H.); (J.R.A.)
| | - John D. O’Neil
- Institute for Cancer & Genomic Sciences, College of Medicine & Dentistry, University of Birmingham, Birmingham B15 2TT, UK; (K.L.D.); (J.D.O.); (C.H.); (J.R.A.)
| | - Chunfang Hu
- Institute for Cancer & Genomic Sciences, College of Medicine & Dentistry, University of Birmingham, Birmingham B15 2TT, UK; (K.L.D.); (J.D.O.); (C.H.); (J.R.A.)
| | - John R. Arrand
- Institute for Cancer & Genomic Sciences, College of Medicine & Dentistry, University of Birmingham, Birmingham B15 2TT, UK; (K.L.D.); (J.D.O.); (C.H.); (J.R.A.)
| | - Christopher W. Dawson
- Warwick Medical School, Gibbet Hill Campus, University of Warwick, Coventry CV4 7AL, UK; (H.E.B.); (C.W.D.)
| | - Lawrence S. Young
- Warwick Medical School, Gibbet Hill Campus, University of Warwick, Coventry CV4 7AL, UK; (H.E.B.); (C.W.D.)
- Correspondence: ; Tel.: +44-2476-752-38
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25
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Saleem A, Natkunam Y. Extranodal NK/T-Cell Lymphomas: The Role of Natural Killer Cells and EBV in Lymphomagenesis. Int J Mol Sci 2020; 21:E1501. [PMID: 32098335 PMCID: PMC7073055 DOI: 10.3390/ijms21041501] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/15/2020] [Accepted: 02/18/2020] [Indexed: 02/07/2023] Open
Abstract
Keywords: NK cells, extranodal NK/T-cell lymphoma, EBV.
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Affiliation(s)
| | - Yasodha Natkunam
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA;
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26
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Mohammed EM. Environmental Influencers, MicroRNA, and Multiple Sclerosis. J Cent Nerv Syst Dis 2020; 12:1179573519894955. [PMID: 32009827 PMCID: PMC6971968 DOI: 10.1177/1179573519894955] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 11/25/2019] [Indexed: 02/06/2023] Open
Abstract
Multiple sclerosis (MS) is a complex neurological disorder characterized by an aberrant immune system that affects patients' quality of life. Several environmental factors have previously been proposed to associate with MS pathophysiology, including vitamin D deficiency, Epstein-Barr virus (EBV) infection, and cigarette smoking. These factors may influence cellular molecularity, interfering with cellular proliferation, differentiation, and apoptosis. This review argues that small noncoding RNA named microRNA (miRNA) influences these factors' mode of action. Dysregulation in the miRNAs network may deeply impact cellular hemostasis, thereby possibly resulting in MS pathogenicity. This article represents a literature review and an author's theory of how environmental factors may induce dysregulations in the miRNAs network, which could ultimately affect MS pathogenicity.
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27
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Hatton O, Smith MM, Alexander M, Mandell M, Sherman C, Stesney MW, Hui ST, Dohrn G, Medrano J, Ringwalt K, Harris-Arnold A, Maloney EM, Krams SM, Martinez OM. Epstein-Barr Virus Latent Membrane Protein 1 Regulates Host B Cell MicroRNA-155 and Its Target FOXO3a via PI3K p110α Activation. Front Microbiol 2019; 10:2692. [PMID: 32038504 PMCID: PMC6988802 DOI: 10.3389/fmicb.2019.02692] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Accepted: 11/06/2019] [Indexed: 12/22/2022] Open
Abstract
Epstein-Barr Virus (EBV) is associated with potentially fatal lymphoproliferations such as post-transplant lymphoproliferative disorder (PTLD), a serious complication of transplantation. The viral mechanisms underlying the development and maintenance of EBV+ B cell lymphomas remain elusive but represent attractive therapeutic targets. EBV modulates the expression of host microRNAs (miRs), non-coding RNAs that regulate gene expression, to promote survival of EBV+ B cell lymphomas. Here, we examined how the primary oncogene of EBV, latent membrane protein 1 (LMP1), regulates host miRs using an established model of inducible LMP1 signaling. LMP1 derived from the B95.8 lab strain or PTLD induced expression of the oncogene miR-155. However, PTLD variant LMP1 lost the ability to upregulate the tumor suppressor miR-193. Small molecule inhibitors (SMI) of p38 MAPK, NF-κB, and PI3K p110α inhibited upregulation of miR-155 by B95.8 LMP1; no individual SMI significantly reduced upregulation of miR-155 by PTLD variant LMP1. miR-155 was significantly elevated in EBV+ B cell lymphoma cell lines and associated exosomes and inversely correlated with expression of the miR-155 target FOXO3a in cell lines. Finally, LMP1 reduced expression of FOXO3a, which was rescued by a PI3K p110α SMI. Our data indicate that tumor variant LMP1 differentially regulates host B cell miR expression, suggesting viral genotype as an important consideration for the treatment of EBV+ B cell lymphomas. Notably, we demonstrate a novel mechanism in which LMP1 supports the regulation of miR-155 and its target FOXO3a in B cells through activation of PI3K p110α. This mechanism expands on the previously established mechanisms by which LMP1 regulates miR-155 and FOXO3a and may represent both rational therapeutic targets and biomarkers for EBV+ B cell lymphomas.
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Affiliation(s)
- Olivia Hatton
- Department of Molecular Biology, Colorado College, Colorado Springs, CO, United States
| | - Madeline M Smith
- Department of Molecular Biology, Colorado College, Colorado Springs, CO, United States
| | - Madison Alexander
- Department of Molecular Biology, Colorado College, Colorado Springs, CO, United States
| | - Melanie Mandell
- Department of Molecular Biology, Colorado College, Colorado Springs, CO, United States
| | - Carissa Sherman
- Department of Molecular Biology, Colorado College, Colorado Springs, CO, United States
| | - Madeline W Stesney
- Department of Molecular Biology, Colorado College, Colorado Springs, CO, United States
| | - Sin Ting Hui
- Division of Abdominal Transplantation, Department of Surgery, Stanford University School of Medicine, Stanford, CA, United States
| | - Gillian Dohrn
- Department of Molecular Biology, Colorado College, Colorado Springs, CO, United States
| | - Joselinne Medrano
- Department of Molecular Biology, Colorado College, Colorado Springs, CO, United States
| | - Kurt Ringwalt
- Department of Molecular Biology, Colorado College, Colorado Springs, CO, United States
| | - Aleishia Harris-Arnold
- Division of Abdominal Transplantation, Department of Surgery, Stanford University School of Medicine, Stanford, CA, United States.,Stanford Immunology, Stanford University School of Medicine, Stanford, CA, United States
| | - Eden M Maloney
- Division of Abdominal Transplantation, Department of Surgery, Stanford University School of Medicine, Stanford, CA, United States.,Stanford Immunology, Stanford University School of Medicine, Stanford, CA, United States
| | - Sheri M Krams
- Division of Abdominal Transplantation, Department of Surgery, Stanford University School of Medicine, Stanford, CA, United States.,Stanford Immunology, Stanford University School of Medicine, Stanford, CA, United States
| | - Olivia M Martinez
- Division of Abdominal Transplantation, Department of Surgery, Stanford University School of Medicine, Stanford, CA, United States.,Stanford Immunology, Stanford University School of Medicine, Stanford, CA, United States
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28
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Epstein-Barr virus-associated T- and NK-cell lymphoproliferative diseases: an update and diagnostic approach. Pathology 2019; 52:111-127. [PMID: 31767131 DOI: 10.1016/j.pathol.2019.09.011] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 09/11/2019] [Accepted: 09/12/2019] [Indexed: 11/21/2022]
Abstract
Epstein-Barr virus (EBV)-positive T-cell and natural killer (NK)-cell lymphoproliferative diseases (EBV-TNKLPD) are a group of uncommon disorders characterised by EBV infection of T- and NK-cells. As a group, EBV-TNKLPD are more commonly encountered in Asians and Native Americans from Central and South America compared to Western populations. They encompass a spectrum of entities that range from non-neoplastic lesions such as EBV-associated haemophagocytic lymphohistiocytosis (EBV-HLH) to more chronic conditions with variable outcomes such as chronic active EBV infections (CAEBV) of T- and NK-cell type (cutaneous and systemic forms) and malignant diseases such as systemic EBV-positive T-cell lymphoma of childhood, aggressive NK-cell leukaemia, extranodal NK/T-cell lymphoma, nasal-type, and primary EBV-positive nodal T/NK-cell lymphoma. Due to their rarity, broad clinicopathological spectrum and significant morphological and immunophenotypic overlap, the diagnosis and precise classification of EBV-TNKLPD often pose a challenge to clinicians and pathologists. Correct classification of this group of rare diseases relies heavily on the age of onset, disease presentation, duration of symptoms and cell of origin (T- vs NK-cell lineage). In this review, we provide an update on the clinicopathological and molecular features of the various EBV-TNKLPD entities occurring in non-immunocompromised patients and present a practical algorithmic approach for the general pathologist who is confronted with these disorders in routine clinical practice.
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29
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Fani M, Zandi M, Rezayi M, Khodadad N, Langari H, Amiri I. The Role of microRNAs in the Viral Infections. Curr Pharm Des 2019; 24:4659-4667. [PMID: 30636585 DOI: 10.2174/1381612825666190110161034] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 12/24/2018] [Accepted: 12/31/2018] [Indexed: 12/15/2022]
Abstract
MicroRNAs (miRNAs) are non-coding RNAs with 19 to 24 nucleotides which are evolutionally conserved. MicroRNAs play a regulatory role in many cellular functions such as immune mechanisms, apoptosis, and tumorigenesis. The main function of miRNAs is the post-transcriptional regulation of gene expression via mRNA degradation or inhibition of translation. In fact, many of them act as an oncogene or tumor suppressor. These molecular structures participate in many physiological and pathological processes of the cell. The virus can also produce them for developing its pathogenic processes. It was initially thought that viruses without nuclear replication cycle such as Poxviridae and RNA viruses can not code miRNA, but recently, it has been proven that RNA viruses can also produce miRNA. The aim of this articles is to describe viral miRNAs biogenesis and their effects on cellular and viral genes.
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Affiliation(s)
- Mona Fani
- Virology Department, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Milad Zandi
- Department of Virology, School of Public Health, Tehran University of Medical Science, Tehran, Iran
| | - Majid Rezayi
- Metabolic Syndrome Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Modern Sciences and Technologies, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Nastaran Khodadad
- Virology Department, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Hadis Langari
- Metabolic Syndrome Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Iraj Amiri
- Computational Optics Research Group, Advanced Institute of Materials Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam.,Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam
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30
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Wu J, Gu J, Shen L, Fang D, Zou X, Cao Y, Wang S, Mao L. Exosomal MicroRNA-155 Inhibits Enterovirus A71 Infection by Targeting PICALM. Int J Biol Sci 2019; 15:2925-2935. [PMID: 31853228 PMCID: PMC6909958 DOI: 10.7150/ijbs.36388] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 09/18/2019] [Indexed: 12/12/2022] Open
Abstract
Enterovirus A71 (EV-A71) causes hand, foot, and mouth disease (HFMD) that is associated with neurological complications. Researchers have shown that exosomes containing host cellular microRNA (miRNA) can modulate the recipient's cellular response during viral infection. However, it is unclear how exosomal miRNAs regulate this response during EV-A71 infection. In this study, we used an exosomal miRNA chip to show that microRNA-155 (miR-155) was markedly enriched in exosomes after EV-A71 infection. Moreover, exosomal miR-155 efficaciously inhibited EV-A71 infection by targeting phosphatidylinositol clathrin assembly protein (PICALM) in recipient cells. Importantly, we confirmed that exosomal miR-155 reduced EV-A71 infection severity in vivo. Additionally, miR-155 levels in throat swabs from EV-A71-infected patients were higher than in those from healthy individuals. Collectively, our findings provide evidence that exosomal miR-155 plays a role in host-pathogen interactions by mediating EV-A71 infection via the repression of PICALM; these results provide insights into the regulatory mechanisms of viral infection.
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Affiliation(s)
- Jing Wu
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, China.,Department of Immunology, Jiangsu Key Laboratory of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Jiaqi Gu
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, China.,Department of Immunology, Jiangsu Key Laboratory of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Li Shen
- Clinical Laboratory, Zhenjiang Center for Disease Control and Prevention, Jiangsu, China
| | - Daihua Fang
- Clinical Laboratory, Xuzhou Children's Hospital, Xuzhou, China
| | - Xinran Zou
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, China.,Department of Immunology, Jiangsu Key Laboratory of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Yuwen Cao
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, China.,Department of Immunology, Jiangsu Key Laboratory of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Shengjun Wang
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, China.,Department of Immunology, Jiangsu Key Laboratory of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Lingxiang Mao
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, China
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31
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Lao TD, Le TAH. Association Between LMP-1, LMP-2, and miR-155 Expression as Potential Biomarker in Nasopharyngeal Carcinoma Patients: A Case/Control Study in Vietnam. Genet Test Mol Biomarkers 2019; 23:815-822. [PMID: 31693455 DOI: 10.1089/gtmb.2019.0089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Background: Epstein-Barr virus (EBV) infection and microRNA-155 (miR-155) are considered etiological factors that contribute to nasopharyngeal carcinoma (NPC). The regulation of miR-155 expression induced by EBV infection has been reported to be important in NPC tumorigenesis. Aims: This study was designed to explore the relationships among the expression levels of miR-155, LMP-1 (latent membrane protein-1), and LMP-2 (latent membrane protein-2) in tumor and nontumor specimens of Vietnamese NPC patients. The study was also designed to investigate the association between miR-155 expression and LMP-1 and LMP-2 expression in Vietnamese NPC patients. Materials and Methods: Ninety-three NPC biopsy samples and 100 noncancerous swab specimens were collected from patients and analyzed by real-time reverse transcriptase polymerase chain reaction. Results: LMP-1, LMP2, and miR-155 were significantly upregulated in 76.34%, 67.74%, and 75.27% of NPC samples, respectively, with decreased expression observed in the control group (p < 0.0001). Moreover, the statistical analysis showed that there was a close association between LMP-1 and LMP-2 expression and miR-155 expression in the NPC samples. Conclusion: miR-155 expression was upregulated and significantly associated with the expression of LMP-1 and LMP-2, in Vietnamese NPC cases.
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Affiliation(s)
- Thuan Duc Lao
- Department of Pharmaceutical and Medical Biotechnology, Faculty of Biotechnology, Ho Chi Minh City Open University, Ho Chi Minh City, Vietnam.,Faculty of Biology and Biotechnology, University of Science, Vietnam National University, Ho Chi Minh City, Vietnam
| | - Thuy Ai Huyen Le
- Department of Pharmaceutical and Medical Biotechnology, Faculty of Biotechnology, Ho Chi Minh City Open University, Ho Chi Minh City, Vietnam
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32
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Mai S, Xiao R, Shi L, Zhou X, Yang T, Zhang M, Weng N, Zhao X, Wang R, Liu J, Sun R, Qin H, Wang H. MicroRNA-18a promotes cancer progression through SMG1 suppression and mTOR pathway activation in nasopharyngeal carcinoma. Cell Death Dis 2019; 10:819. [PMID: 31659158 PMCID: PMC6817863 DOI: 10.1038/s41419-019-2060-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 09/17/2019] [Accepted: 10/14/2019] [Indexed: 02/06/2023]
Abstract
miR-18a has been reported to be upregulated in nasopharyngeal carcinoma (NPC) tissues by microarray assays. However, the roles and the underlying mechanisms of miR-18a in NPC remain poorly understood. Here we demonstrated by real-time RT-PCR that miR-18a expression is upregulated in NPC tissues, and positively correlated with tumor size and TNM stage. Moreover, miR-18a expression could be upregulated by NF-κB activation or Epstein-Barr virus encoded latent membrane protein 1 expression. The ectopic expression of miR-18a promoted NPC cell proliferation, migration and invasion, while the repression of miR-18a had opposite effects. Candidate genes under regulation by miR-18a were screened out through a whole-genome microarray assay, further identified by a reporter assay and verified in clinical samples. SMG1, a member of the phosphoinositide 3-kinase-related kinases family and an mTOR antagonist, was identified as functional target of miR-18a. Our results confirmed that miR-18a exerts its oncogenic role through suppression of SMG1 and activation of mTOR pathway in NPC cells. Importantly, in vivo xenograft tumor growth in nude mice was effectively inhibited by intratumor injection of miR-18a antagomir. Our data support an oncogenic role of miR-18a through a novel miR-18a/SMG1/mTOR axis and suggest that the antitumor effects of antagomir-18a may make it suitable for NPC therapy.
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Affiliation(s)
- ShiJuan Mai
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - RuoWen Xiao
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Lu Shi
- Department of thoracic oncology, the cancer center of the fifth affiliated hospital of Sun Yat-sen University, Zhuhai, 519000, China
| | - XiaoMin Zhou
- ZhouKou Hospital of Traditional Chinese Medicine, Zhoukou, 466000, China
| | - Te Yang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - MeiYin Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - NuoQing Weng
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - XinGe Zhao
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - RuiQi Wang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Ji Liu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Rui Sun
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China.
| | - HaiDe Qin
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China.
| | - HuiYun Wang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China.
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33
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Shi Q, Zhang Y, Liu W, Xiao H, Qi Y, Li J, Luo B. Latent membrane protein 2A inhibits expression level of Smad2 through regulating miR‐155‐5p in EBV‐associated gastric cancer cell lines. J Med Virol 2019; 92:96-106. [DOI: 10.1002/jmv.25579] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Accepted: 08/27/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Qianzhu Shi
- Department of Pathogen Biology, School of Basic MedicineQingdao University Qingdao China
| | - Yan Zhang
- Department of Clinical LaboratoryCentral Hospital of Zibo Zibo China
| | - Wen Liu
- Department of Pathogen Biology, School of Basic MedicineQingdao University Qingdao China
| | - Hua Xiao
- Department of Pathogen Biology, School of Basic MedicineQingdao University Qingdao China
| | - Yifan Qi
- Department of Pathogen Biology, School of Basic MedicineQingdao University Qingdao China
| | - Jun Li
- Department of Pathogen Biology, School of Basic MedicineQingdao University Qingdao China
| | - Bing Luo
- Department of Pathogen Biology, School of Basic MedicineQingdao University Qingdao China
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34
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Sethuraman S, Thomas M, Gay LA, Renne R. Computational analysis of ribonomics datasets identifies long non-coding RNA targets of γ-herpesviral miRNAs. Nucleic Acids Res 2019; 46:8574-8589. [PMID: 29846699 PMCID: PMC6144796 DOI: 10.1093/nar/gky459] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 05/14/2018] [Indexed: 12/16/2022] Open
Abstract
Ribonomics experiments involving crosslinking and immuno-precipitation (CLIP) of Ago proteins have expanded the understanding of the miRNA targetome of several organisms. These techniques, collectively referred to as CLIP-seq, have been applied to identifying the mRNA targets of miRNAs expressed by Kaposi’s Sarcoma-associated herpes virus (KSHV) and Epstein–Barr virus (EBV). However, these studies focused on identifying only those RNA targets of KSHV and EBV miRNAs that are known to encode proteins. Recent studies have demonstrated that long non-coding RNAs (lncRNAs) are also targeted by miRNAs. In this study, we performed a systematic re-analysis of published datasets from KSHV- and EBV-driven cancers. We used CLIP-seq data from lymphoma cells or EBV-transformed B cells, and a crosslinking, ligation and sequencing of hybrids dataset from KSHV-infected endothelial cells, to identify novel lncRNA targets of viral miRNAs. Here, we catalog the lncRNA targetome of KSHV and EBV miRNAs, and provide a detailed in silico analysis of lncRNA–miRNA binding interactions. Viral miRNAs target several hundred lncRNAs, including a subset previously shown to be aberrantly expressed in human malignancies. In addition, we identified thousands of lncRNAs to be putative targets of human miRNAs, suggesting that miRNA–lncRNA interactions broadly contribute to the regulation of gene expression.
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Affiliation(s)
- Sunantha Sethuraman
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL 32610, USA
| | - Merin Thomas
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL 32610, USA
| | - Lauren A Gay
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL 32610, USA
| | - Rolf Renne
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL 32610, USA.,UF Health Cancer Center, University of Florida, Gainesville, FL 32610, USA.,UF Genetics Institute, University of Florida, Gainesville, FL 32610, USA
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35
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Rivera-Soto R, Damania B. Modulation of Angiogenic Processes by the Human Gammaherpesviruses, Epstein-Barr Virus and Kaposi's Sarcoma-Associated Herpesvirus. Front Microbiol 2019; 10:1544. [PMID: 31354653 PMCID: PMC6640166 DOI: 10.3389/fmicb.2019.01544] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 06/20/2019] [Indexed: 12/25/2022] Open
Abstract
Angiogenesis is the biological process by which new blood vessels are formed from pre-existing vessels. It is considered one of the classic hallmarks of cancer, as pathological angiogenesis provides oxygen and essential nutrients to growing tumors. Two of the seven known human oncoviruses, Epstein–Barr virus (EBV) and Kaposi’s sarcoma-associated herpesvirus (KSHV), belong to the Gammaherpesvirinae subfamily. Both viruses are associated with several malignancies including lymphomas, nasopharyngeal carcinomas, and Kaposi’s sarcoma. The viral genomes code for a plethora of viral factors, including proteins and non-coding RNAs, some of which have been shown to deregulate angiogenic pathways and promote tumor growth. In this review, we discuss the ability of both viruses to modulate the pro-angiogenic process.
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Affiliation(s)
- Ricardo Rivera-Soto
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.,Curriculum in Genetics and Molecular Biology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Blossom Damania
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.,Curriculum in Genetics and Molecular Biology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.,Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
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36
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Zhao L, Ouyang Y, Bai Y, Gong J, Liao H. miR-155-5p inhibits the viability of vascular smooth muscle cell via targeting FOS and ZIC3 to promote aneurysm formation. Eur J Pharmacol 2019; 853:145-152. [DOI: 10.1016/j.ejphar.2019.03.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 03/02/2019] [Accepted: 03/18/2019] [Indexed: 12/11/2022]
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37
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Liu Y, Cheng Z, Pang Y, Cui L, Qian T, Quan L, Zhao H, Shi J, Ke X, Fu L. Role of microRNAs, circRNAs and long noncoding RNAs in acute myeloid leukemia. J Hematol Oncol 2019; 12:51. [PMID: 31126316 PMCID: PMC6534901 DOI: 10.1186/s13045-019-0734-5] [Citation(s) in RCA: 147] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 04/16/2019] [Indexed: 12/16/2022] Open
Abstract
Acute myeloid leukemia (AML) is a malignant tumor of the immature myeloid hematopoietic cells in the bone marrow (BM). It is a highly heterogeneous disease, with rising morbidity and mortality in older patients. Although researches over the past decades have improved our understanding of AML, its pathogenesis has not yet been fully elucidated. Long noncoding RNAs (lncRNAs), microRNAs (miRNAs), and circular RNAs (circRNAs) are three noncoding RNA (ncRNA) molecules that regulate DNA transcription and translation. With the development of RNA-Seq technology, more and more ncRNAs that are closely related to AML leukemogenesis have been discovered. Numerous studies have found that these ncRNAs play an important role in leukemia cell proliferation, differentiation, and apoptosis. Some may potentially be used as prognostic biomarkers. In this systematic review, we briefly described the characteristics and molecular functions of three groups of ncRNAs, including lncRNAs, miRNAs, and circRNAs, and discussed their relationships with AML in detail.
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Affiliation(s)
- Yan Liu
- Department of Hematology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China.,Translational Medicine Center, Huaihe Hospital of Henan University, Kaifeng, 475000, China.,Translational Medicine Center, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China
| | - Zhiheng Cheng
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Yifan Pang
- Department of Medicine, William Beaumont Hospital, Royal Oak, MI, 48073, USA
| | - Longzhen Cui
- Translational Medicine Center, Huaihe Hospital of Henan University, Kaifeng, 475000, China
| | - Tingting Qian
- Department of Hematology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China.,Translational Medicine Center, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China
| | - Liang Quan
- Department of Hematology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China.,Translational Medicine Center, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China
| | - Hongyou Zhao
- Department of Laser Medicine, Chinese PLA General Hospital, Beijing, 100853, China
| | - Jinlong Shi
- Department of Biomedical Engineering, Chinese PLA General Hospital, Beijing, 100853, China
| | - Xiaoyan Ke
- Department of Hematology and Lymphoma Research Center, Peking University Third Hospital, Beijing, 100191, China
| | - Lin Fu
- Department of Hematology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China. .,Translational Medicine Center, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China. .,Department of Hematology, Huaihe Hospital of Henan University, Kaifeng, 475000, China.
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38
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de Mel S, Hue SSS, Jeyasekharan AD, Chng WJ, Ng SB. Molecular pathogenic pathways in extranodal NK/T cell lymphoma. J Hematol Oncol 2019; 12:33. [PMID: 30935402 PMCID: PMC6444858 DOI: 10.1186/s13045-019-0716-7] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 02/28/2019] [Indexed: 01/01/2023] Open
Abstract
Extranodal NK/T cell lymphoma, nasal type (ENKTL) is an aggressive malignancy with a dismal prognosis. Although L-asparaginase-based chemotherapy has resulted in improved response rates, relapse occurs in up to 50% of patients with disseminated disease. There is hence an urgent need for effective targeted therapy, especially for patients with relapsed or refractory disease. Novel insights gleaned from high-throughput molecular and genomic profiling studies in recent years have contributed significantly to the understanding of the molecular biology of ENKTL, which exemplifies many of the hallmarks of cancer. Deregulated pro-proliferative signaling pathways, such as the Janus-associated kinase/signal transducer and activator of transcription (JAK/STAT), platelet-derived growth factor (PDGF), Aurora kinase, MYC, and NF-κB, have been identified as potential therapeutic targets. The discovery of the non-canonical function of EZH2 as a pro-proliferative transcriptional co-activator has shed further light on the pathogenesis of ENKTL. Loss of key tumor suppressor genes located on chromosome 6q21 also plays an important role. The best-studied examples include PR domain zinc finger protein 1(PRDM1), protein tyrosine phosphatase kappa (PTPRK), and FOXO3. Promoter hypermethylation has been shown to result in the downregulation of other tumor suppressor genes in ENKTL, which may be potentially targeted through hypomethylating agents. Deregulation of apoptosis through p53 mutations and upregulation of the anti-apoptotic protein, survivin, may provide a further growth advantage to this tumor. A deranged DNA damage response as a result of the aberration of ataxia telangiectasia-related (ATR) kinases can lead to significant genomic instability and may contribute to chemoresistance of ENKTL. Recently, immune evasion has emerged as a critical pathway for survival in ENKTL and may be a consequence of HLA dysregulation or STAT3-driven upregulation of programmed cell death ligand 1 (PD-L1). Immunotherapy via inhibition of programmed cell death 1 (PD-1)/PD-L1 checkpoint signaling holds great promise as a novel therapeutic option. In this review, we present an overview of the key molecular and pathogenic pathways in ENKTL, organized using the framework of the "hallmarks of cancer" as described by Hanahan and Weinberg, with a focus on those with the greatest translational potential.
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Affiliation(s)
- Sanjay de Mel
- Department of Haematology-Oncology, National University Cancer Institute of Singapore, National University Health System, 1E Kent Ridge Rd, Singapore, 119228, Singapore
| | - Susan Swee-Shan Hue
- Department of Pathology, National University Health System, Singapore, Singapore.,Agency for Science Technology and Research Singapore, Institute of Molecular and Cellular Biology, Singapore, Singapore
| | - Anand D Jeyasekharan
- Department of Haematology-Oncology, National University Cancer Institute of Singapore, National University Health System, 1E Kent Ridge Rd, Singapore, 119228, Singapore.,Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Wee-Joo Chng
- Department of Haematology-Oncology, National University Cancer Institute of Singapore, National University Health System, 1E Kent Ridge Rd, Singapore, 119228, Singapore. .,Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore.
| | - Siok-Bian Ng
- Department of Pathology, National University Health System, Singapore, Singapore. .,Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore. .,Department of Pathology, Yong Loo Lin School of Medicine, National University of Singapore, 5 Lower Kent Ridge Road, Singapore, 119074, Singapore.
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39
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Bayraktar R, Van Roosbroeck K. miR-155 in cancer drug resistance and as target for miRNA-based therapeutics. Cancer Metastasis Rev 2019; 37:33-44. [PMID: 29282605 DOI: 10.1007/s10555-017-9724-7] [Citation(s) in RCA: 145] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Small non-coding microRNAs (miRNAs) are instrumental in physiological processes, such as proliferation, cell cycle, apoptosis, and differentiation, processes which are often disrupted in diseases like cancer. miR-155 is one of the best conserved and multifunctional miRNAs, which is mainly characterized by overexpression in multiple diseases including malignant tumors. Altered expression of miR-155 is found to be associated with various physiological and pathological processes, including hematopoietic lineage differentiation, immune response, inflammation, and tumorigenesis. Furthermore, miR-155 drives therapy resistance mechanisms in various tumor types. Therefore, miR-155-mediated signaling pathways became a potential target for the molecular treatment of cancer. In this review, we summarize the current findings of miR-155 in hematopoietic lineage differentiation, the immune response, inflammation, and cancer therapy resistance. Furthermore, we discuss the potential of miR-155-based therapeutic approaches for the treatment of cancer.
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Affiliation(s)
- Recep Bayraktar
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, 1881 Holcombe Boulevard, Unit 1950, Houston, TX, 77054, USA
| | - Katrien Van Roosbroeck
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, 1881 Holcombe Boulevard, Unit 1950, Houston, TX, 77054, USA.
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40
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Poles WA, Nishi EE, de Oliveira MB, Eugênio AIP, de Andrade TA, Campos AHFM, de Campos RR, Vassallo J, Alves AC, Scapulatempo Neto C, Paes RAP, Landman G, Zerbini MCN, Colleoni GWB. Targeting the polarization of tumor-associated macrophages and modulating mir-155 expression might be a new approach to treat diffuse large B-cell lymphoma of the elderly. Cancer Immunol Immunother 2019; 68:269-282. [PMID: 30430204 PMCID: PMC11028330 DOI: 10.1007/s00262-018-2273-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Accepted: 11/08/2018] [Indexed: 11/25/2022]
Abstract
Aging immune deterioration and Epstein-Barr (EBV) intrinsic mechanisms play an essential role in EBV-positive diffuse large B-cell lymphoma (DLBCL) of the elderly (EBV + DLBCLe) pathogenesis, through the expression of viral proteins, interaction with host molecules and epigenetic regulation, such as miR-155, required for induction of M1 phenotype of macrophages. This study aims to evaluate the relationship between macrophage polarization pattern in the tumor microenvironment and relative expression of miR-155 in EBV + DLBCLe and EBV-negative DLBCL patients. We studied 28 EBV + DLBCLe and 65 EBV-negative DLBCL patients. Tumor-associated macrophages (TAM) were evaluated by expression of CD68, CD163 and CD163/CD68 ratio (degree of M2 polarization), using tissue microarray. RNA was extracted from paraffin-embedded tumor samples for miR-155 relative expression study. We found a significantly higher CD163/CD68 ratio in EBV + DLBCLe compared to EBV-negative DLBCL. In EBV-negative DLBCL, CD163/CD68 ratio was higher among advanced-staged/high-tumor burden disease and overexpression of miR-155 was associated with decreased polarization to the M2 phenotype of macrophages. The opposite was observed in EBV + DLBCLe patients: we found a positive association between miR-155 relative expression and CD163/CD68 ratio, which was not significant after outlier exclusion. We believe that the higher CD163/CD68 ratio in this group is probably due to the presence of the EBV since it directly affects macrophage polarization towards M2 phenotype through cytokine secretion in the tumor microenvironment. Therapeutic strategies modulating miR-155 expression or preventing immuno-regulatory and pro-tumor macrophage polarization could be adjuvants in EBV + DLBCLe therapy since this entity has a rich infiltration of M2 macrophages in its tumor microenvironment.
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MESH Headings
- Aged
- Aged, 80 and over
- Antigens, CD/immunology
- Antigens, CD/metabolism
- Antigens, Differentiation, Myelomonocytic/immunology
- Antigens, Differentiation, Myelomonocytic/metabolism
- Epstein-Barr Virus Infections/complications
- Epstein-Barr Virus Infections/immunology
- Epstein-Barr Virus Infections/virology
- Female
- Gene Expression Regulation, Neoplastic/immunology
- Herpesvirus 4, Human/immunology
- Herpesvirus 4, Human/physiology
- Humans
- Lymphoma, Large B-Cell, Diffuse/complications
- Lymphoma, Large B-Cell, Diffuse/genetics
- Lymphoma, Large B-Cell, Diffuse/immunology
- Macrophage Activation/immunology
- Macrophages/classification
- Macrophages/immunology
- Macrophages/metabolism
- Male
- MicroRNAs/genetics
- MicroRNAs/immunology
- Middle Aged
- Receptors, Cell Surface/immunology
- Receptors, Cell Surface/metabolism
- Tumor Microenvironment/genetics
- Tumor Microenvironment/immunology
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Affiliation(s)
- Wagner A Poles
- Department of Clinical and Experimental Oncology, Universidade Federal de São Paulo, Rua Diogo de Faria, 824, 5° andar, Hemocentro, CEP 04037-002, Sao Paulo, Brazil
| | - Erika E Nishi
- Department of Physiology, Universidade Federal de São Paulo, Sao Paulo, Brazil
| | - Mariana B de Oliveira
- Department of Clinical and Experimental Oncology, Universidade Federal de São Paulo, Rua Diogo de Faria, 824, 5° andar, Hemocentro, CEP 04037-002, Sao Paulo, Brazil
| | - Angela I P Eugênio
- Department of Clinical and Experimental Oncology, Universidade Federal de São Paulo, Rua Diogo de Faria, 824, 5° andar, Hemocentro, CEP 04037-002, Sao Paulo, Brazil
| | - Tathiana A de Andrade
- Department of Clinical and Experimental Oncology, Universidade Federal de São Paulo, Rua Diogo de Faria, 824, 5° andar, Hemocentro, CEP 04037-002, Sao Paulo, Brazil
| | | | - Ruy R de Campos
- Department of Physiology, Universidade Federal de São Paulo, Sao Paulo, Brazil
| | - José Vassallo
- Department of Pathology, AC Camargo Cancer Center, Sao Paulo, Brazil
| | - Antonio C Alves
- Department of Pathology, Universidade Federal de São Paulo, Sao Paulo, Brazil
| | | | | | - Gilles Landman
- Department of Pathology, Universidade Federal de São Paulo, Sao Paulo, Brazil
| | | | - Gisele W B Colleoni
- Department of Clinical and Experimental Oncology, Universidade Federal de São Paulo, Rua Diogo de Faria, 824, 5° andar, Hemocentro, CEP 04037-002, Sao Paulo, Brazil.
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41
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Wood CD, Carvell T, Gunnell A, Ojeniyi OO, Osborne C, West MJ. Enhancer Control of MicroRNA miR-155 Expression in Epstein-Barr Virus-Infected B Cells. J Virol 2018; 92:e00716-18. [PMID: 30021904 PMCID: PMC6146817 DOI: 10.1128/jvi.00716-18] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 07/10/2018] [Indexed: 12/15/2022] Open
Abstract
The oncogenic microRNA (miRNA) miR-155 is the most frequently upregulated miRNA in Epstein-Barr virus (EBV)-positive B cell malignancies and is upregulated in other nonviral lymphomas. Both EBV nuclear antigen 2 (EBNA2) and the B cell transcription factor interferon regulatory factor 4 (IRF4) are known to activate transcription of the host cell gene from which miR-155 is processed (miR-155HG; BIC). EBNA2 also activates IRF4 transcription, indicating that EBV may upregulate miR-155 through direct and indirect mechanisms. The mechanism of transcriptional regulation of IRF4 and miR-155HG by EBNA2, however, has not been defined. We demonstrate that EBNA2 can activate IRF4 and miR-155HG expression through specific upstream enhancers that are dependent on the Notch signaling transcription factor RBPJ, a known binding partner of EBNA2. We demonstrate that in addition to the activation of the miR-155HG promoter, IRF4 can also activate miR-155HG via the upstream enhancer also targeted by EBNA2. Gene editing to remove the EBNA2- and IRF4-responsive miR-155HG enhancer located 60 kb upstream of miR-155HG led to reduced miR-155HG expression in EBV-infected cells. Our data therefore demonstrate that specific RBPJ-dependent enhancers regulate the IRF4-miR-155 expression network and play a key role in the maintenance of miR-155 expression in EBV-infected B cells. These findings provide important insights that will improve our understanding of miR-155 control in B cell malignancies.IMPORTANCE MicroRNA miR-155 is expressed at high levels in many human cancers, particularly lymphomas. Epstein-Barr virus (EBV) infects human B cells and drives the development of numerous lymphomas. Two genes carried by EBV (LMP1 and EBNA2) upregulate miR-155 expression, and miR-155 expression is required for the growth of EBV-infected B cells. We show that the EBV transcription factor EBNA2 upregulates miR-155 expression by activating an enhancer upstream from the miR-155 host gene (miR-155HG) from which miR-155 is derived. We show that EBNA2 also indirectly activates miR-155 expression through enhancer-mediated activation of IRF4 IRF4 then activates both the miR-155HG promoter and the upstream enhancer, independently of EBNA2. Gene editing to remove the miR-155HG enhancer leads to a reduction in miR-155HG expression. We therefore identify enhancer-mediated activation of miR-155HG as a critical step in promoting B cell growth and a likely contributor to lymphoma development.
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Affiliation(s)
- C David Wood
- School of Life Sciences, University of Sussex, Falmer, Brighton, United Kingdom
| | - Thomas Carvell
- School of Life Sciences, University of Sussex, Falmer, Brighton, United Kingdom
| | - Andrea Gunnell
- School of Life Sciences, University of Sussex, Falmer, Brighton, United Kingdom
| | - Opeoluwa O Ojeniyi
- School of Life Sciences, University of Sussex, Falmer, Brighton, United Kingdom
| | - Cameron Osborne
- Department of Medical and Molecular Genetics, King's College London School of Medicine, Guy's Hospital, London, United Kingdom
| | - Michelle J West
- School of Life Sciences, University of Sussex, Falmer, Brighton, United Kingdom
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Homme RP, Singh M, Majumder A, George AK, Nair K, Sandhu HS, Tyagi N, Lominadze D, Tyagi SC. Remodeling of Retinal Architecture in Diabetic Retinopathy: Disruption of Ocular Physiology and Visual Functions by Inflammatory Gene Products and Pyroptosis. Front Physiol 2018; 9:1268. [PMID: 30233418 PMCID: PMC6134046 DOI: 10.3389/fphys.2018.01268] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 08/21/2018] [Indexed: 02/06/2023] Open
Abstract
Diabetic patients suffer from a host of physiological abnormalities beyond just those of glucose metabolism. These abnormalities often lead to systemic inflammation via modulation of several inflammation-related genes, their respective gene products, homocysteine metabolism, and pyroptosis. The very nature of this homeostatic disruption re-sets the overall physiology of diabetics via upregulation of immune responses, enhanced retinal neovascularization, upregulation of epigenetic events, and disturbances in cells' redox regulatory system. This altered pathophysiological milieu can lead to the development of diabetic retinopathy (DR), a debilitating vision-threatening eye condition with microvascular complications. DR is the most prevalent cause of irreversible blindness in the working-age adults throughout the world as it can lead to severe structural and functional remodeling of the retina, decreasing vision and thus diminishing the quality of life. In this manuscript, we attempt to summarize recent developments and new insights to explore the very nature of this intertwined crosstalk between components of the immune system and their metabolic orchestrations to elucidate the pathophysiology of DR. Understanding the multifaceted nature of the cellular and molecular factors that are involved in DR could reveal new targets for effective diagnostics, therapeutics, prognostics, preventive tools, and finally strategies to combat the development and progression of DR in susceptible subjects.
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Affiliation(s)
- Rubens P. Homme
- Eye and Vision Science Laboratory, Department of Physiology, University of Louisville School of Medicine, Louisville, KY, United States
- Department of Physiology, University of Louisville School of Medicine, Louisville, KY, United States
| | - Mahavir Singh
- Eye and Vision Science Laboratory, Department of Physiology, University of Louisville School of Medicine, Louisville, KY, United States
- Department of Physiology, University of Louisville School of Medicine, Louisville, KY, United States
| | - Avisek Majumder
- Eye and Vision Science Laboratory, Department of Physiology, University of Louisville School of Medicine, Louisville, KY, United States
- Department of Biochemistry and Molecular Genetics, University of Louisville School of Medicine, Louisville, KY, United States
| | - Akash K. George
- Eye and Vision Science Laboratory, Department of Physiology, University of Louisville School of Medicine, Louisville, KY, United States
- Department of Physiology, University of Louisville School of Medicine, Louisville, KY, United States
| | - Kavya Nair
- Eye and Vision Science Laboratory, Department of Physiology, University of Louisville School of Medicine, Louisville, KY, United States
- Department of Physiology, University of Louisville School of Medicine, Louisville, KY, United States
| | - Harpal S. Sandhu
- Department of Ophthalmology and Visual Sciences, University of Louisville School of Medicine, Louisville, KY, United States
- Kentucky Lions Eye Center, University of Louisville School of Medicine, Louisville, KY, United States
| | - Neetu Tyagi
- Department of Physiology, University of Louisville School of Medicine, Louisville, KY, United States
| | - David Lominadze
- Department of Physiology, University of Louisville School of Medicine, Louisville, KY, United States
| | - Suresh C Tyagi
- Department of Physiology, University of Louisville School of Medicine, Louisville, KY, United States
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Kollarova J, Cenk E, Schmutz C, Marko D. The mycotoxin alternariol suppresses lipopolysaccharide-induced inflammation in THP-1 derived macrophages targeting the NF-κB signalling pathway. Arch Toxicol 2018; 92:3347-3358. [PMID: 30175388 PMCID: PMC6208963 DOI: 10.1007/s00204-018-2299-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 08/23/2018] [Indexed: 12/21/2022]
Abstract
Alternariol (AOH) is a secondary metabolite formed by black mold of the genus Alternaria alternata. Due to limited hazard and occurrence data, AOH is still considered as an “emerging mycotoxin” and, as such, not monitored and regulated yet. Recent studies indicate immunosuppressive effects in vitro by altering the expression of CD molecules and proinflammatory cytokines, which are indispensable in mounting an innate immune response. However, the mode of action by which AOH exerts its immunosuppressive effects has not been unraveled yet. The present study aimed to characterise the impact of AOH on the nuclear factor kappa B (NF-κB) pathway, the expression of NF-κB target cytokines and involved regulatory microRNAs (miRNAs). In THP-1 derived macrophages, AOH (1–20 µM) was found to suppress lipopolysaccharide (LPS)-induced NF-κB pathway activation, decrease secretion of the proinflammatory cytokines IL-8, IL-6, TNF-α and to induce secretion of the anti-inflammatory IL-10. Thereby, a distinct pattern of cytokine mRNA levels was monitored, varying between short- and long-term exposure. Concomitantly, AOH (2–20 µM) affected the transcription levels of miR-146a and miR-155 in LPS-stimulated THP-1 derived macrophages dose-dependently by down- and upregulation, respectively. In contrast, transcription of miR-16 and miR-125b, two other immune-related miRNAs, was not modulated. In the absence of a LPS stimulus, AOH (20 µM) did not affect basal NF-κB activity, but increased IL-10 transcription. Collectively, our results indicate, that AOH itself does not induce a proinflammatory immune response in human macrophages; however, in an inflamed environment it possesses the ability to repress inflammation by targeting the NF-κB signalling pathway and regulatory miRNAs.
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Affiliation(s)
- Jessica Kollarova
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Waehringerstr. 38, 1090, Vienna, Austria
| | - Ebru Cenk
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Waehringerstr. 38, 1090, Vienna, Austria
| | - Cornelia Schmutz
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Waehringerstr. 38, 1090, Vienna, Austria
| | - Doris Marko
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Waehringerstr. 38, 1090, Vienna, Austria.
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Zhu D, Yang C, Shen P, Chen L, Chen J, Sun X, Duan L, Zhang L, Zhu J, Duan Y. rSjP40 suppresses hepatic stellate cell activation by promoting microRNA-155 expression and inhibiting STAT5 and FOXO3a expression. J Cell Mol Med 2018; 22:5486-5493. [PMID: 30091834 PMCID: PMC6201359 DOI: 10.1111/jcmm.13819] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Revised: 06/12/2018] [Accepted: 06/29/2018] [Indexed: 01/09/2023] Open
Abstract
Activation of hepatic stellate cells (HSCs) is the central event of the evolution of hepatic fibrosis. Schistosomiasis is one of the pathogenic factors which could induce hepatic fibrosis. Previous studies have shown that recombinant Schistosoma japonicum egg antigen P40 (rSjP40) can inhibit the activation and proliferation of HSCs. MicroRNA‐155 is one of the multifunctional noncoding RNA, which is involved in a series of important biological processes including cell development, proliferation, differentiation and apoptosis. Here, we try to observe the role of microRNA‐155 in rSjP40‐inhibited HSC activation and explore its potential mechanisms. We found that microRNA‐155 was raised in rSjP40‐treated HSCs, and further studies have shown that rSjP40 enhanced microRNA‐155 expression by inhibiting STAT5 transcription. Up‐regulated microRNA‐155 can down‐regulate the expression of FOXO3a and then participate in rSjP40‐inhibited expression of α‐smooth muscle actin (α‐SMA) and collagen I. Furthermore, we observed microRNA‐155 inhibitor could partially restore the down‐regulation of FOXO3a, α‐SMA and collagen I expression in LX‐2 cells induced by rSjP40. Therefore, our research provides further insight into the mechanism by which rSjP40 could inhibit HSC activation via miR‐155.
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Affiliation(s)
- Dandan Zhu
- Department of Pathogen Biology, School of Medicine, Nantong University, Nantong, China
| | - Chunzhao Yang
- Department of Pathogen Biology, School of Medicine, Nantong University, Nantong, China
| | - Pei Shen
- Laboratory Medicine Center, Affiliated Hospital of Nantong University, Nantong, China
| | - Liuting Chen
- Department of Pathogen Biology, School of Medicine, Nantong University, Nantong, China
| | - Jinling Chen
- Department of Pathogen Biology, School of Medicine, Nantong University, Nantong, China
| | - Xiaolei Sun
- Department of Pathogen Biology, School of Medicine, Nantong University, Nantong, China
| | - Lian Duan
- Department of Medical Informatics, School of Medicine, Nantong University, Nantong, China
| | - Li Zhang
- Department of Pathogen Biology, School of Medicine, Nantong University, Nantong, China
| | - Jinhua Zhu
- Department of Pathogen Biology, School of Medicine, Nantong University, Nantong, China
| | - Yinong Duan
- Department of Pathogen Biology, School of Medicine, Nantong University, Nantong, China
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The Nefarious Nexus of Noncoding RNAs in Cancer. Int J Mol Sci 2018; 19:ijms19072072. [PMID: 30018188 PMCID: PMC6073630 DOI: 10.3390/ijms19072072] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 07/12/2018] [Indexed: 02/07/2023] Open
Abstract
The past decade has witnessed enormous progress, and has seen the noncoding RNAs (ncRNAs) turn from the so-called dark matter RNA to critical functional molecules, influencing most physiological processes in development and disease contexts. Many ncRNAs interact with each other and are part of networks that influence the cell transcriptome and proteome and consequently the outcome of biological processes. The regulatory circuits controlled by ncRNAs have become increasingly more relevant in cancer. Further understanding of these complex network interactions and how ncRNAs are regulated, is paving the way for the identification of better therapeutic strategies in cancer.
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Readhead B, Haure-Mirande JV, Funk CC, Richards MA, Shannon P, Haroutunian V, Sano M, Liang WS, Beckmann ND, Price ND, Reiman EM, Schadt EE, Ehrlich ME, Gandy S, Dudley JT. Multiscale Analysis of Independent Alzheimer's Cohorts Finds Disruption of Molecular, Genetic, and Clinical Networks by Human Herpesvirus. Neuron 2018; 99:64-82.e7. [PMID: 29937276 PMCID: PMC6551233 DOI: 10.1016/j.neuron.2018.05.023] [Citation(s) in RCA: 420] [Impact Index Per Article: 70.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 03/05/2018] [Accepted: 05/15/2018] [Indexed: 12/13/2022]
Abstract
Investigators have long suspected that pathogenic microbes might contribute to the onset and progression of Alzheimer's disease (AD) although definitive evidence has not been presented. Whether such findings represent a causal contribution, or reflect opportunistic passengers of neurodegeneration, is also difficult to resolve. We constructed multiscale networks of the late-onset AD-associated virome, integrating genomic, transcriptomic, proteomic, and histopathological data across four brain regions from human post-mortem tissue. We observed increased human herpesvirus 6A (HHV-6A) and human herpesvirus 7 (HHV-7) from subjects with AD compared with controls. These results were replicated in two additional, independent and geographically dispersed cohorts. We observed regulatory relationships linking viral abundance and modulators of APP metabolism, including induction of APBB2, APPBP2, BIN1, BACE1, CLU, PICALM, and PSEN1 by HHV-6A. This study elucidates networks linking molecular, clinical, and neuropathological features with viral activity and is consistent with viral activity constituting a general feature of AD.
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Affiliation(s)
- Ben Readhead
- Departments of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Icahn Institute of Genomic Sciences and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Institute for Next Generation Healthcare, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; ASU-Banner Neurodegenerative Disease Research Center, Arizona State University, Tempe, AZ 85287-5001, USA
| | - Jean-Vianney Haure-Mirande
- Department of Neurology, Alzheimer's Disease Research Center, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Cory C Funk
- Institute for Systems Biology, Seattle, WA, 98109-5263, USA
| | | | - Paul Shannon
- Institute for Systems Biology, Seattle, WA, 98109-5263, USA
| | - Vahram Haroutunian
- Departments of Psychiatry and Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; James J. Peters VA Medical Center, 130 West Kingsbridge Road, New York, NY 10468, USA
| | - Mary Sano
- James J. Peters VA Medical Center, 130 West Kingsbridge Road, New York, NY 10468, USA; Department of Psychiatry, Alzheimer's Disease Research Center, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Winnie S Liang
- Arizona Alzheimer's Consortium, Phoenix, AZ 85014, USA; Neurogenomics Division, Translational Genomics Research Institute, Phoenix, AZ 85004, USA
| | - Noam D Beckmann
- Departments of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Icahn Institute of Genomic Sciences and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Nathan D Price
- Institute for Systems Biology, Seattle, WA, 98109-5263, USA
| | - Eric M Reiman
- Arizona Alzheimer's Consortium, Phoenix, AZ 85014, USA; Neurogenomics Division, Translational Genomics Research Institute, Phoenix, AZ 85004, USA; Department of Psychiatry, University of Arizona, Phoenix, AZ 85721, USA; Banner Alzheimer's Institute, Phoenix, AZ 85006, USA
| | - Eric E Schadt
- Departments of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Icahn Institute of Genomic Sciences and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Sema4, Stamford, CT 06902, USA
| | - Michelle E Ehrlich
- Departments of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Icahn Institute of Genomic Sciences and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Department of Neurology, Alzheimer's Disease Research Center, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Sam Gandy
- Department of Neurology, Alzheimer's Disease Research Center, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; James J. Peters VA Medical Center, 130 West Kingsbridge Road, New York, NY 10468, USA; Department of Psychiatry, Alzheimer's Disease Research Center, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Center for NFL Neurological Care, Department of Neurology, New York, NY 10029, USA
| | - Joel T Dudley
- Departments of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Icahn Institute of Genomic Sciences and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Institute for Next Generation Healthcare, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; ASU-Banner Neurodegenerative Disease Research Center, Arizona State University, Tempe, AZ 85287-5001, USA.
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de Mel S, Soon GST, Mok Y, Chung TH, Jeyasekharan AD, Chng WJ, Ng SB. The Genomics and Molecular Biology of Natural Killer/T-Cell Lymphoma: Opportunities for Translation. Int J Mol Sci 2018; 19:E1931. [PMID: 29966370 PMCID: PMC6073933 DOI: 10.3390/ijms19071931] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 06/23/2018] [Accepted: 06/25/2018] [Indexed: 01/03/2023] Open
Abstract
Extranodal NK/T-cell lymphoma, nasal type (ENKTL), is an aggressive malignancy with a poor prognosis. While the introduction of L-asparaginase in the treatment of this disease has significantly improved the prognosis, the outcome of patients relapsing after asparaginase-based chemotherapy, which occurs in up to 50% of patients with disseminated disease, remains dismal. There is hence an urgent need for effective targeted therapy especially in the relapsed/refractory setting. Gene expression profiling studies have provided new perspectives on the molecular biology, ontogeny and classification of ENKTL and further identified dysregulated signaling pathways such as Janus associated kinase (/Signal Transducer and activation of transcription (JAK/STAT), Platelet derived growth factor (PDGF), Aurora Kinase and NF-κB, which are under evaluation as therapeutic targets. Copy number analyses have highlighted potential tumor suppressor genes such as PR Domain Zinc Finger Protein 1 (PRDM1) and protein tyrosine phosphatase kappa (PTPRK) while next generation sequencing studies have identified recurrently mutated genes in pro-survival and anti-apoptotic pathways. The discovery of epigenetic dysregulation and aberrant microRNA activity has broadened our understanding of the biology of ENKTL. Importantly, immunotherapy via Programmed Cell Death -1 (PD-1) and Programmed Cell Death Ligand1 (PD-L1) checkpoint signaling inhibition is emerging as an attractive therapeutic strategy in ENKTL. Herein, we present an overview of the molecular biology and genomic landscape of ENKTL with a focus on the most promising translational opportunities.
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Affiliation(s)
- Sanjay de Mel
- Department of Haematology-Oncology, National University Cancer Institute of Singapore, National University Health System, Singapore 110974, Singapore.
| | - Gwyneth Shook-Ting Soon
- Department of Pathology, National University Hospital, National University Health System, Singapore 110974, Singapore.
| | - Yingting Mok
- Department of Pathology, National University Hospital, National University Health System, Singapore 110974, Singapore.
| | - Tae-Hoon Chung
- Cancer Science Institute of Singapore, National University of Singapore, Singapore 110974, Singapore.
| | - Anand D Jeyasekharan
- Department of Haematology-Oncology, National University Cancer Institute of Singapore, National University Health System, Singapore 110974, Singapore.
- Cancer Science Institute of Singapore, National University of Singapore, Singapore 110974, Singapore.
| | - Wee-Joo Chng
- Department of Haematology-Oncology, National University Cancer Institute of Singapore, National University Health System, Singapore 110974, Singapore.
- Cancer Science Institute of Singapore, National University of Singapore, Singapore 110974, Singapore.
| | - Siok-Bian Ng
- Department of Pathology, National University Hospital, National University Health System, Singapore 110974, Singapore.
- Cancer Science Institute of Singapore, National University of Singapore, Singapore 110974, Singapore.
- Department of Pathology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119074, Singapore.
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Liao TL, Hsieh SL, Chen YM, Chen HH, Liu HJ, Lee HC, Chen DY. Rituximab May Cause Increased Hepatitis C Virus Viremia in Rheumatoid Arthritis Patients Through Declining Exosomal MicroRNA-155. Arthritis Rheumatol 2018; 70:1209-1219. [PMID: 29575671 DOI: 10.1002/art.40495] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 03/08/2018] [Indexed: 12/18/2022]
Abstract
OBJECTIVE Several studies have shown that rituximab may enhance hepatitis C virus (HCV) activity. MicroRNAs (miRNAs) have been implicated in modulating the host immune response in HCV infection; miRNAs can be packaged into the exosomes and then shuttled by the exosomes to aid biologic functions. However, the role of exosomal miRNAs (exo-miRNAs) in rituximab-related HCV activity enhancement remains unclear. METHODS The association between rituximab and increased HCV activity was examined using an in vitro cell-based assay. Purified exosomes were confirmed using immunoblotting and flow cytometry and quantified using enzyme-linked immunosorbent assay. Exosomal miRNA-155 (exo-miR-155) levels were measured using quantitative reverse transcription-polymerase chain reaction. RESULTS In vitro data showed that B cell-derived miR-155 could inhibit HCV replication in hepatocytes through exosome transmission. Rituximab could both induce B cell depletion and affect intracellular miR-155 production as well as exo-miR-155 transmission and then enhance HCV activity in hepatocytes (P < 0.005). Serum exosome levels were increased in rheumatoid arthritis (RA) patients with HCV infection compared with the levels in RA patients without HCV infection (P < 0.01). The exo-miR-155 levels were significantly increased in RA patients with HCV infection compared with those without infection (P < 0.01). A significantly greater decrement of exo-miR-155 expression was observed after rituximab therapy compared with those observed before therapy (P < 0.01), and hepatitis C viral loads increased simultaneously (P < 0.05). CONCLUSION Circulating exo-miR-155 levels were negatively correlated with hepatitis C viral loads and subsequently associated with rituximab-related HCV activity enhancement in RA patients. Exo-miR-155 may become a potential diagnostic biomarker or therapeutic target.
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Affiliation(s)
- Tsai-Ling Liao
- Taichung Veterans General Hospital and National Chung Hsing University, Taichung, Taiwan
| | - Shie-Liang Hsieh
- Genomics Research Center, Academia Sinica and National Yang Ming University, Taipei, Taiwan
| | - Yi-Ming Chen
- Taichung Veterans General Hospital and National Chung Hsing University, Taichung, Taiwan, and National Yang Ming University, Taipei, Taiwan
| | - Hsin-Hua Chen
- Taichung Veterans General Hospital and National Chung Hsing University, Taichung, Taiwan, and National Yang Ming University, Taipei, Taiwan
| | - Hung-Jen Liu
- National Chung Hsing University, Taichung, Taiwan
| | - Hsiu-Chin Lee
- Taichung Veterans General Hospital, Taichung, Taiwan
| | - Der-Yuan Chen
- Taichung Veterans General Hospital, China Medical University Hospital, and China Medical University, Taichung, Taiwan
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Role of MicroRNAs in Renal Parenchymal Diseases-A New Dimension. Int J Mol Sci 2018; 19:ijms19061797. [PMID: 29914215 PMCID: PMC6032378 DOI: 10.3390/ijms19061797] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 06/07/2018] [Accepted: 06/08/2018] [Indexed: 11/18/2022] Open
Abstract
Since their discovery in 1993, numerous microRNAs (miRNAs) have been identified in humans and other eukaryotic organisms, and their role as key regulators of gene expression is still being elucidated. It is now known that miRNAs not only play a central role in the processes that ensure normal development and physiology, but they are often dysregulated in various diseases. In this review, we present an overview of the role of miRNAs in normal renal development and physiology, in maladaptive renal repair after injury, and in the pathogenesis of renal parenchymal diseases. In addition, we describe methods used for their detection and their potential as therapeutic targets. Continued research on renal miRNAs will undoubtedly improve our understanding of diseases affecting the kidneys and may also lead to new therapeutic agents.
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50
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MicroRNA-216a Inhibits NF-κB-Mediated Inflammatory Cytokine Production in Teleost Fish by Modulating p65. Infect Immun 2018; 86:IAI.00256-18. [PMID: 29632247 DOI: 10.1128/iai.00256-18] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 04/03/2018] [Indexed: 01/08/2023] Open
Abstract
Inflammation is the host self-protection mechanism to eliminate pathogen invasion. The excessive inflammatory response can result in uncontrolled inflammation, autoimmune diseases, or pathogen dissemination. Recent studies have widely shown that microRNAs (miRNAs) contribute to the regulation of inflammation in mammals by repressing gene expression at the posttranscriptional level. However, the miRNA-mediated mechanism in the inflammatory response in fish remains hazy. In the present study, the regulatory mechanism of the miR-216a-mediated inflammatory response in teleost fish was addressed. We found that the expression of miR-216a could be significantly upregulated in the miiuy croaker after challenge with Vibrio anguillarum and lipopolysaccharide. Bioinformatics predictions demonstrated a potential binding site of miR-216a in the 3' untranslated region of the p65 gene, and the result was further confirmed by luciferase assay. Moreover, both the mRNA and protein levels of p65 in macrophages were downregulated by miR-216a. Deletion mutant analysis of the miR-216a promoter showed that the Ap1 and Sp1 transcription factor binding sites are indispensable for the transcription of miR-216a. Further study revealed that overexpression of miR-216a suppresses inflammatory cytokine expression and negatively regulates NF-κB signaling, which inhibit an excessive inflammatory response. The collective results indicate that miR-216a plays a role as a negative regulator involved in modulating the bacterium-induced inflammatory response.
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