101
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Pan L, Lian W, Zhang X, Han S, Cao C, Li X, Li M. Human circular RNA‑0054633 regulates high glucose‑induced vascular endothelial cell dysfunction through the microRNA‑218/roundabout 1 and microRNA‑218/heme oxygenase‑1 axes. Int J Mol Med 2018; 42:597-606. [PMID: 29693114 DOI: 10.3892/ijmm.2018.3625] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 03/27/2018] [Indexed: 11/06/2022] Open
Abstract
The aim of the present study was to investigate the relative regulation of human circular RNA‑0054633 (hsa_circ_0054633), microRNA‑218 (miR‑218), roundabout 1 (ROBO1) and heme oxygenase‑1 (HO‑1) in human umbilical vein endothelial cells (HUVECs) in high glucose conditions. Initially, the expression of hsa_circ_0054633 in HUVECs was detected in high glucose conditions by reverse transcription‑quantitative polymerase chain reaction. Next, a small interfering RNA against hsa_circ_0054633 was constructed to investigate the function of jsa_circ_0054633 in HUVECs by transwell migration, cell counting kit‑8, flow cytometry and tube formation assays. In addition, the effect of hsa_circ_0054633 on the expression levels of ROBO1, HO‑1 and vascular endothelial growth factor were examined. The regulation effects of hsa_circ_0054633 on high glucose‑induced HUVEC proliferation, migration, and angiopoiesis were also analyzed. Bioinformatics analysis and dual‑luciferase assay were then used to confirm the direct or specific regulation of hsa_circ_0054633, miR‑218, ROBO1 and HO‑1. It was observed that high glucose levels increased the expression of hsa_circ_0054633, while downregulation of hsa_circRNA‑0054633 increased the high glucose‑induced endothelial cell dysfunction, including proliferation, migration and angiopoiesis suppression. Bioinformatics analysis revealed that the expression of circRNA‑0054633 was able to inhibit miR‑218 expression, which was clarified by the dual‑luciferase assay. It was also demonstrated that downregulating the expression of miR‑218 inhibited the high glucose‑induced endothelial cell dysfunction by promoting the expression of ROBO1 and HO‑1. These results suggest that the expression of hsa_circRNA‑0054633 has a protective effect against high glucose‑induced endothelial cell dysfunction by targeting ROBO1 and HO‑1.
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Affiliation(s)
- Long Pan
- Department of Interventional and Vascular Surgery, Tenth People's Hospital of Tongji University, Shanghai 200072, P.R. China
| | - Weishuai Lian
- Department of Interventional and Vascular Surgery, Tenth People's Hospital of Tongji University, Shanghai 200072, P.R. China
| | - Xiaojun Zhang
- Department of Interventional and Vascular Surgery, Tenth People's Hospital of Tongji University, Shanghai 200072, P.R. China
| | - Shilong Han
- Department of Interventional and Vascular Surgery, Tenth People's Hospital of Tongji University, Shanghai 200072, P.R. China
| | - Chuanwu Cao
- Department of Interventional and Vascular Surgery, Tenth People's Hospital of Tongji University, Shanghai 200072, P.R. China
| | - Xue Li
- Department of Interventional and Vascular Surgery, Tenth People's Hospital of Tongji University, Shanghai 200072, P.R. China
| | - Maoquan Li
- Department of Interventional and Vascular Surgery, Tenth People's Hospital of Tongji University, Shanghai 200072, P.R. China
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102
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Holdt LM, Kohlmaier A, Teupser D. Molecular functions and specific roles of circRNAs in the cardiovascular system. Noncoding RNA Res 2018; 3:75-98. [PMID: 30159442 PMCID: PMC6096412 DOI: 10.1016/j.ncrna.2018.05.002] [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: 11/23/2017] [Revised: 05/11/2018] [Accepted: 05/11/2018] [Indexed: 12/25/2022] Open
Abstract
As part of the superfamily of long noncoding RNAs, circular RNAs (circRNAs) are emerging as a new type of regulatory molecules that partake in gene expression control. Here, we review the current knowledge about circRNAs in cardiovascular disease. CircRNAs are not only associated with different types of cardiovascular disease, but they have also been identified as intracellular effector molecules for pathophysiological changes in cardiovascular tissues, and as cardiovascular biomarkers. This evidence is put in the context of the current understanding of general circRNA biogenesis and of known interactions of circRNAs with DNA, RNA, and proteins.
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Affiliation(s)
- Lesca M. Holdt
- Institute of Laboratory Medicine, University Hospital, LMU Munich, Germany
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103
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Wang JJ, Liu C, Shan K, Liu BH, Li XM, Zhang SJ, Zhou RM, Dong R, Yan B, Sun XH. Circular RNA-ZNF609 regulates retinal neurodegeneration by acting as miR-615 sponge. Am J Cancer Res 2018; 8:3408-3415. [PMID: 29930739 PMCID: PMC6010990 DOI: 10.7150/thno.25156] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 04/11/2018] [Indexed: 12/25/2022] Open
Abstract
Glaucoma is a major cause of visual impairment characterized by progressive retinal neurodegeneration. Circular RNAs are a class of endogenous noncoding RNAs that regulate gene expression in eukaryotes. In this study, we investigated the role of cZNF609 in retinal neurodegeneration induced by glaucoma. Methods: qRT-PCR and Sanger sequencing were conducted to detect cZNF609 expression pattern during retinal neurodegeneration. Immunofluorescence staining was conducted to detect the effect of cZNF609 silencing on retinal neurodegeneration in vivo. MTT assay, Ki67 staining, and PI staining were conducted to detect the effect of cZNF609 silencing on retinal glial cells and RGC function in vitro. Bioinformatics analysis, RNA pull-down assays, and in vitro studies were conducted to reveal the mechanism of cZNF609-mediated retinal neurodegeneration. Results: cZNF609 expression was significantly up-regulated during retinal neurodegeneration. cZNF609 silencing reduced retinal reactive gliosis and glial cell activation, and facilitated RGC survival in vivo. cZNF609 silencing directly regulated Müller cell function but indirectly regulated RGC function in vitro. cZNF609 acted as an endogenous miR-615 sponge to sequester and inhibit miR-615 activity, which led to increased METRN. METRN overexpression could partially rescue cZNF609 silencing-mediated inhibitory effects on retinal glial cell proliferation. Conclusion: Intervention of cZNF609 expression is a promising therapeutic strategy for retinal neurodegeneration.
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104
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Lei K, Bai H, Wei Z, Xie C, Wang J, Li J, Chen Q. The mechanism and function of circular RNAs in human diseases. Exp Cell Res 2018; 368:147-158. [PMID: 29730164 DOI: 10.1016/j.yexcr.2018.05.002] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 04/30/2018] [Accepted: 05/02/2018] [Indexed: 02/07/2023]
Abstract
Circular RNAs (circRNAs) are a recently discovered form of RNA. Initially, circRNAs were believed to result from errors during the process of gene transcription. However, after further investigation, scientists suggested that circRNAs are of great biological significance. CircRNAs show stability, conservation, abundance, and tissue and stage specificity. They can also function as miRNA sponges, regulate gene expression, and interact with proteins to affect cell behavior. Emerging evidence has also demonstrated that circRNAs participate or show abnormal expression in diseases, including central nervous system diseases, cardiovascular diseases and cancers, indicating their marked potential in the prediction and prognosis of diseases and clinical treatment.
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Affiliation(s)
- Kexin Lei
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Hetian Bai
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Zihao Wei
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Changqing Xie
- Xiangya Stomatological Hospital, Central South University, Changsha, China
| | - Jiongke Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jing Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
| | - Qianming Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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105
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Cao S, Wei D, Li X, Zhou J, Li W, Qian Y, Wang Z, Li G, Pan X, Lei D. Novel circular RNA expression profiles reflect progression of patients with hypopharyngeal squamous cell carcinoma. Oncotarget 2018; 8:45367-45379. [PMID: 28514762 PMCID: PMC5542193 DOI: 10.18632/oncotarget.17488] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 04/15/2017] [Indexed: 12/12/2022] Open
Abstract
Circular RNAs (circRNAs), a novel class of endogenous noncoding RNAs, have been shown to have important roles in a number of diseases, including several types of cancers. We hypothesized that circRNAs are involved in the pathogenesis of hypopharyngeal squamous cell carcinoma (HSCC). To test our hypothesis, we initially compared the expression profiles of circRNAs in 4 paired HSCC and adjacent normal tissue samples by using a circRNA microarray. The microarray data showed that 2392 circRNAs, including 1304 upregulated and 1088 downregulated circRNA transcripts, were significantly dysregulated in the HSCC tissues. The 10 most dysregulated circRNAs from the microarray analysis were further validated in another 32 pairs of specimens using quantitative real-time polymerase chain reaction assays. These circRNAs might sponge microRNAs (miRNAs) in predicted circRNA-miRNA-mRNA networks. Bioinformatics analysis was also performed to predict possible pathways in which these networks might be involved. Finally, we analyzed the interaction between validated circRNAs and their potential cancer-related miRNA targets. We are the first to comprehensively delineate the expression profiles of circRNAs in HSCC and to provide potential candidates for future mechanism studies. Our study is potentially of critical significance in uncovering the roles of circRNAs in HSCC.
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Affiliation(s)
- Shengda Cao
- Department of Otorhinolaryngology, Qilu Hospital, Shandong University, Key Laboratory of Otolaryngology, NHFPC (Shandong University), Jinan 250012, P. R. China
| | - Dongmin Wei
- Department of Otorhinolaryngology, Qilu Hospital, Shandong University, Key Laboratory of Otolaryngology, NHFPC (Shandong University), Jinan 250012, P. R. China
| | - Xu Li
- Department of Head and Neck Surgery, Houston, TX 77030, USA
| | - Jieyu Zhou
- Department of Otorhinolaryngology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai 200011, P. R. China
| | - Wenming Li
- Department of Otorhinolaryngology, Qilu Hospital, Shandong University, Key Laboratory of Otolaryngology, NHFPC (Shandong University), Jinan 250012, P. R. China
| | - Ye Qian
- Department of Otorhinolaryngology, Qilu Hospital, Shandong University, Key Laboratory of Otolaryngology, NHFPC (Shandong University), Jinan 250012, P. R. China
| | - Zhanwang Wang
- Department of Otorhinolaryngology, Qilu Hospital, Shandong University, Key Laboratory of Otolaryngology, NHFPC (Shandong University), Jinan 250012, P. R. China
| | - Guojun Li
- Department of Head and Neck Surgery, Houston, TX 77030, USA.,Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Xinliang Pan
- Department of Otorhinolaryngology, Qilu Hospital, Shandong University, Key Laboratory of Otolaryngology, NHFPC (Shandong University), Jinan 250012, P. R. China
| | - Dapeng Lei
- Department of Otorhinolaryngology, Qilu Hospital, Shandong University, Key Laboratory of Otolaryngology, NHFPC (Shandong University), Jinan 250012, P. R. China
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106
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Yu F, Xie C, Sun J, Feng H, Huang X. Circular RNA expression profiles in synovial fluid: a promising new class of diagnostic biomarkers for osteoarthritis. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2018; 11:1338-1346. [PMID: 31938229 PMCID: PMC6958132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Accepted: 12/02/2017] [Indexed: 06/10/2023]
Abstract
BACKGROUND Previous studies suggest that circRNAs abnormally function in the progression of osteoarthritis (OA). However, little is known about the diagnostic value of circRNAs in patients with OA. To assess potential applications of circRNAs as diagnostic tools in OA, expression profiles of circRNAs in synovial fluid from OA patients and healthy subjects were obtained. METHODS Microarray analysis was performed to profile the expression of circRNAs in an unbiased manner. CircRNA expression in synovial fluid was identified by real-time quantitative polymerase chain reaction (RT-qPCR). The diagnostic value was evaluated using receiver operating characteristics (ROC) curves and the area under the ROC curves (AUC). Spearman correlation analysis was performed to assess the correlation of circRNAs and clinical parameters. RESULTS We identified five circRNAs that were significantly elevated in synovial fluid from OA patients compared with those of the healthy controls. Among these five circRNAs, hsa_circ_0104873, hsa_circ_0104595, and hsa_circ_0101251 could effectively separate patients with OA from healthy controls with high AUC (0.683, 0.708 and 0.754, respectively). Furthermore, we found that three circRNAs were positively correlated with the degree of radiographic grading and symptomatic severity of OA patients. CONCLUSION This study suggests that increased expression of hsa_circ_0104873, hsa_circ_0104595, and hsa_circ_0101251 in synovial fluid from OA patients may serve as potential biomarkers for OA screening.
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Affiliation(s)
- Fangyuan Yu
- Department of Orthopedics, 309 Hospital of PLA Beijing, China
| | - Congqin Xie
- Department of Orthopedics, 309 Hospital of PLA Beijing, China
| | - Jitong Sun
- Department of Orthopedics, 309 Hospital of PLA Beijing, China
| | - Huicheng Feng
- Department of Orthopedics, 309 Hospital of PLA Beijing, China
| | - Xunwu Huang
- Department of Orthopedics, 309 Hospital of PLA Beijing, China
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107
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Zhang S, Zeng X, Ding T, Guo L, Li Y, Ou S, Yuan H. Microarray profile of circular RNAs identifies hsa_circ_0014130 as a new circular RNA biomarker in non-small cell lung cancer. Sci Rep 2018; 8:2878. [PMID: 29440731 PMCID: PMC5811528 DOI: 10.1038/s41598-018-21300-5] [Citation(s) in RCA: 124] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 02/01/2018] [Indexed: 12/14/2022] Open
Abstract
Accumulating evidence has revealed that aberrant Circular RNAs (circRNAs) expression plays important roles in carcinogenesis and tumor progression. However, their role in non-small cell lung cancer (NSCLC) remains unclear. In this study, we first used circRNA microarrays to screen for tumour-specific circRNA candidates in between NSCLC (n = 3) and adjacent lung (n = 3) tissue. Among the circRNA expression profile, two circRNAs (hsa_circ_0014130 and hsa_circ_0016760) were selected for validation in ten pairs of NSCLC and adjacent non-cancerous tissues by real-time quantitative reverse transcription-polymerase chain reaction (qRT-PCR). Only hsa_circ_0014130 exhibited significantly overexpressed in NSCLC tissues (P < 0.001), which were further confirmed in another 36 matched tissue samples using qRT-PCR. Hsa_circ_0014130 expression significantly correlated with TNM stage (P = 0.001) and lymphatic metastasis (P = 0.004). The area under the receiver operating characteristic curve was 0.878 (95% confidence interval = 0.804–0.951; P < 0.001), which showed good diagnostic potential. Bioinformatics platforms predicted that hsa_circ_0014130 might interact with five miRNAs and their corresponding mRNAs. Gene oncology analysis and pathway analysis revealed that hsa_circ_0014130 could participate in NSCLC development. In summary, our findings indicated that hsa_circ_0014130 could be used as a potential NSCLC biomarker and might be closely related to the carcinogenesis of NSCLC.
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Affiliation(s)
- Shaoyan Zhang
- Department of Thoracic Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China
| | - Xiaoli Zeng
- Department of Clinical Laboratory, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China.
| | - Ting Ding
- Department of Clinical Laboratory, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China
| | - Lin Guo
- Department of Thoracic Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China
| | - Yulong Li
- Department of Clinical Laboratory, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China
| | - Songlei Ou
- Department of Thoracic Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China
| | - Hui Yuan
- Department of Clinical Laboratory, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China
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108
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Patop IL, Kadener S. circRNAs in Cancer. Curr Opin Genet Dev 2018; 48:121-127. [PMID: 29245064 PMCID: PMC5877416 DOI: 10.1016/j.gde.2017.11.007] [Citation(s) in RCA: 354] [Impact Index Per Article: 59.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 11/27/2017] [Accepted: 11/28/2017] [Indexed: 12/14/2022]
Abstract
Exonic circular RNAs (circRNAs) are mostly generated from exons of protein-coding genes and, in many cases, are more abundant that the linear product from their hosting gene. Certain circRNAs are very abundant in the brain and in non-dividing cells; and many also show physiological-specific and tissue-specific expression. Moreover, recent work has demonstrated that some circRNAs are functional. Lately an important number of research articles have pointed a relation between cancer and certain circRNAs. In this review, we describe general advances in the field regarding circRNA biogenesis and functions in relationship with cancer. Also, we summarize some necessary precautions to work with circRNA that are particularly relevant to cancer-related studies.
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Affiliation(s)
- Ines Lucia Patop
- Biological Chemistry Department, Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Sebastian Kadener
- Biological Chemistry Department, Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel; Biology Department, Brandeis University, Waltham, MA 02454, USA.
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109
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Xu Z, Li P, Fan L, Wu M. The Potential Role of circRNA in Tumor Immunity Regulation and Immunotherapy. Front Immunol 2018; 9:9. [PMID: 29403493 PMCID: PMC5786515 DOI: 10.3389/fimmu.2018.00009] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 01/04/2018] [Indexed: 12/17/2022] Open
Abstract
Non-coding RNAs (ncRNAs) can be divided into circular non-coding RNAs (circRNAs) and linear ncRNAs. ncRNAs exist in different cell types, including normal cells, tumor cells and immunocytes. Linear ncRNAs, such as long ncRNAs and microRNAs, have been found to play important roles in the regulation of tumor immunity and immunotherapy; however, the functions of circRNAs in tumor immunity and immunotherapy are less known. Here, we review the current status of ncRNAs in the regulation of tumor immunity and immunotherapy and emphatically discuss the potential roles of circRNAs as tumor antigens in the regulation of tumor immunity and immunotherapy.
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Affiliation(s)
- Zihao Xu
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Key Laboratory of Carcinogenesis, Ministry of Health, Cancer Research Institute, Central South University, Changsha, China
| | - Peiyao Li
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Key Laboratory of Carcinogenesis, Ministry of Health, Cancer Research Institute, Central South University, Changsha, China
| | - Li Fan
- Department of Biochemistry, University of California Riverside, Riverside, CA, United States
| | - Minghua Wu
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Key Laboratory of Carcinogenesis, Ministry of Health, Cancer Research Institute, Central South University, Changsha, China.,Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, China
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110
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Quan G, Li J. Circular RNAs: biogenesis, expression and their potential roles in reproduction. J Ovarian Res 2018; 11:9. [PMID: 29343298 PMCID: PMC5773157 DOI: 10.1186/s13048-018-0381-4] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 01/12/2018] [Indexed: 12/18/2022] Open
Abstract
Unlike other non-coding RNAs (ncRNAs), circular RNA (circRNA) is generally presented as a covalently linked circle lacking both a 5' cap and a 3' tail. circRNAs were thought to be spliced intermediates, byproducts, or products of abnormal RNA splicing events. However, the high-throughput sequencing technology coupled with bioinformatics has recently uncovered thousands of endogenous circRNAs in cells of many different species. These circRNAs show various features, such as abundant expression, evolutionary conservation, cell- or tissue-specific expression, and a higher resistance to degradation caused by exonuclease or ribonuclease (RNase), suggesting their potentially biological significance. However, the function of these circRNAs, their mechanism of action, and the regulation of their biogenesis and degradation remains largely unclear. The current research and findings of circRNA in the context of reproduction will be reviewed. Additionally, the perspectives of circRNAs in the field will be discussed.
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Affiliation(s)
- Guobo Quan
- Yunnan Animal Science and Veterinary Institute, Jindian, Panlong county, Kunming, Yunnan province 650224 China
- Department of Animal Biosciences, University of Guelph, 50 Stone Road East, Building #70, Guelph, ON N1G 2W1 Canada
| | - Julang Li
- Department of Animal Biosciences, University of Guelph, 50 Stone Road East, Building #70, Guelph, ON N1G 2W1 Canada
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong province China
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111
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The role of exosomal non-coding RNAs in cancer metastasis. Oncotarget 2017; 9:12487-12502. [PMID: 29552328 PMCID: PMC5844764 DOI: 10.18632/oncotarget.23552] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 10/28/2017] [Indexed: 02/07/2023] Open
Abstract
An increasing number of studies has confirmed that many cells can secrete vesicles or exosomes in eukaryotes, which contain important nucleic acids, proteins and lipids and play important roles in cell communication and tumor metastasis. This paper summarizes the comprehensive function of exosomal non-coding RNAs. Although some studies have shown that exosomes mediate tumor signal transduction, the functional mechanism of the tumor metastasis remains to be elucidated. In this paper, we reviewed the role of exosomal non-coding RNAs in mediating cancer metastasis in the tumor microenvironment to provide new ideas for the study of tumor pathophysiology.
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112
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Li J, Zhang X, Chen L, Zhang Z, Zhang J, Wang W, Wu M, Shi B, Zhang X, Kozlowski M, Hu Y, Yuan Z. Circulating miR-210 and miR-22 combined with ALT predict the virological response to interferon-alpha therapy of CHB patients. Sci Rep 2017; 7:15658. [PMID: 29142236 PMCID: PMC5688172 DOI: 10.1038/s41598-017-15594-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 10/25/2017] [Indexed: 12/15/2022] Open
Abstract
Interferon-alpha (IFN-α) therapy of chronic hepatitis B (CHB) patients is constrained by limited response and side effects. We described a panel of circulating microRNAs (miRNAs) which could potentially predict outcome of IFN-α therapy. Here, we report development of a simplified scoring model for personalized treatment of CHB patients. 112 CHB patients receiving IFN-α treatment were randomly divided into a training (n = 75) or a validation group (n = 37). The expression of 15 candidate miRNAs was detected in training group with 5 miRNAs exhibiting significantly different levels (p < 0.0001) between early virological response (EVR) and non-early virological response (N-EVR). These 5 miRNAs were further tested in validation phase. Refinement analyses of results from training phase established a model composed of miR-210, miR-22 and alanine aminotransferase (ALT), with area under ROC curve (AUC) of 0.874 and 0.816 in training and validation groups, respectively. In addition, this model showed prognostic value for sustained virological response (SVR) (AUC = 0.821). Collectively, this simplified scoring model composed of miR-210, miR-22 and ALT can reproducibly predict the EVR and SVR of IFN-α therapy in CHB patients. The model should help to forecast the outcome of IFN-α treatment prior to therapy decision involving nucleoside analogs or IFNs.
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Affiliation(s)
- Jin Li
- Research Unit, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China.,Key Laboratory of Medical Molecular Virology at the School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xiaonan Zhang
- Research Unit, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China.,Key Laboratory of Medical Molecular Virology at the School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Liang Chen
- Department of Hepatology, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Zhanqing Zhang
- Department of Hepatology, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Jiming Zhang
- Department of Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
| | - Weixia Wang
- Research Unit, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China.,Key Laboratory of Medical Molecular Virology at the School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Min Wu
- Research Unit, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China.,Key Laboratory of Medical Molecular Virology at the School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Bisheng Shi
- Research Unit, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China.,Key Laboratory of Medical Molecular Virology at the School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xinxin Zhang
- Institute of Infectious and Respiratory Diseases, School of Medicine, Shanghai Jiaotong University, Ruijin Hospital, Shanghai, China
| | - Maya Kozlowski
- Research Unit, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China.,Key Laboratory of Medical Molecular Virology at the School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yunwen Hu
- Research Unit, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China.
| | - Zhenghong Yuan
- Research Unit, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China. .,Key Laboratory of Medical Molecular Virology at the School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China.
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113
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Xie L, Mao M, Xiong K, Jiang B. Circular RNAs: A Novel Player in Development and Disease of the Central Nervous System. Front Cell Neurosci 2017; 11:354. [PMID: 29167634 PMCID: PMC5682331 DOI: 10.3389/fncel.2017.00354] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 10/25/2017] [Indexed: 01/09/2023] Open
Abstract
Circular RNAs (circRNAs) own unique capabilities to communicate with nucleic acids and ribonucleoproteins and are emerging as indispensable compositions of the regulatory messages encoded in the genome. Due to lack of 3′ termini, circRNAs are more resistant to degradation by exonuclease RNase R and possess greater stability than linear RNAs. Moreover, circRNAs can act as microRNA (miRNA) sponge and affect messenger RNA (mRNA) splicing and transcription. By virtue of their great stability and elaborate regulatory mechanisms of gene expression, circRNAs play important roles in certain physiological activities. The development, homeostasis and stress response of the central nervous system (CNS) depend upon precise temporal and spatial regulation of gene networks. Moreover, emerging evidence has revealed that circRNAs are spatiotemporally regulated and dynamically expressed during brain development; therefore, they can exert significant influences on CNS development and diseases. In this review, we highlight the biogenesis of circRNAs and their central roles in regulation of CNS development and diseases.
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Affiliation(s)
- Lili Xie
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Mao Mao
- Departments of Ophthalmology and Anatomy, Institute for Human Genetics, UCSF School of Medicine, San Francisco, CA, United States
| | - Kun Xiong
- Department of Human Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Bing Jiang
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, China
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114
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Wang M, Yu F, Wu W, Zhang Y, Chang W, Ponnusamy M, Wang K, Li P. Circular RNAs: A novel type of non-coding RNA and their potential implications in antiviral immunity. Int J Biol Sci 2017; 13:1497-1506. [PMID: 29230098 PMCID: PMC5723916 DOI: 10.7150/ijbs.22531] [Citation(s) in RCA: 117] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 10/08/2017] [Indexed: 12/23/2022] Open
Abstract
Circular RNAs (circRNAs), a novel type of non-coding RNAs (ncRNAs), are ubiquitously expressed in eukaryotic cells during post-transcriptional processes. Unlike linear RNAs, circRNAs form covalent-closed continuous loops without 5' to 3' polarities and poly (A) tails. With advances in high-throughput sequencing technology, numerous circRNAs have been identified in plants, animals and humans. Notably, circRNAs display cell-type, tissue-type and developmental-stage specific expression patterns in eukaryotic transcriptome, which reveals their significant regulatory functions in gene expression. More importantly, circRNAs serve as microRNA (miRNA) sponges and crucial regulators of gene expression. Additionally, circRNAs modulate pre-mRNA alternative splicing and possess protein-coding capacity. CircRNAs exhibit altered expression under pathological conditions and are strongly associated with the development of various human diseases. Interestingly, circRNAs can also induce antiviral immune responses. A recent study found that the delivery of circRNAs generated in vitro activates RIG-I-mediated innate immune responses and provides protection against viral infection. The antiviral dsRNA-binding proteins, NF90/NF110, act as key regulators in circRNA biogenesis. NF90/NF110 are also functional in inhibiting viral replication through binding to viral mRNAs. In this review, we provide a comprehensive overview on the classification, biogenesis and functions of circRNAs. We also discuss the critical role of circRNAs in eliciting antiviral immunity, providing evidence for the potential implications of circRNAs in antiviral therapies.
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Affiliation(s)
| | | | | | | | | | | | - Kun Wang
- Institute for Translational Medicine, Medical College of Qingdao University, Dengzhou Road 38, Qingdao 266021, China
| | - Peifeng Li
- Institute for Translational Medicine, Medical College of Qingdao University, Dengzhou Road 38, Qingdao 266021, China
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115
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Yang X, Xiong Q, Wu Y, Li S, Ge F. Quantitative Proteomics Reveals the Regulatory Networks of Circular RNA CDR1as in Hepatocellular Carcinoma Cells. J Proteome Res 2017; 16:3891-3902. [PMID: 28892615 DOI: 10.1021/acs.jproteome.7b00519] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Circular RNAs (circRNAs), a class of widespread endogenous RNAs, play crucial roles in diverse biological processes and are potential biomarkers in diverse human diseases and cancers. Cerebellar-degeneration-related protein 1 antisense RNA (CDR1as), an oncogenic circRNA, is involved in human tumorigenesis and is dysregulated in hepatocellular carcinoma (HCC). However, the molecular mechanisms underlying CDR1as functions in HCC remain unclear. Here we explored the functions of CDR1as and searched for CDR1as-regulated proteins in HCC cells. A quantitative proteomics strategy was employed to globally identify CDR1as-regulated proteins in HCC cells. In total, we identified 330 differentially expressed proteins (DEPs) upon enhanced CDR1as expression in HepG2 cells, indicating that they could be proteins regulated by CDR1as. Bioinformatic analysis revealed that many DEPs were involved in cell proliferation and the cell cycle. Further functional studies of epidermal growth factor receptor (EGFR) found that CDR1as exerts its effects on cell proliferation at least in part through the regulation of EGFR expression. We further confirmed that CDR1as could inhibit the expression of microRNA-7 (miR-7). EGFR is a validated target of miR-7; therefore, CDR1as may exert its function by regulating EGFR expression via targeting miR-7 in HCC cells. Taken together, we revealed novel functions and underlying mechanisms of CDR1as in HCC cells. This study serves as the first proteome-wide analysis of a circRNA-regulated protein in cells and provides a reliable and highly efficient method for globally identifying circRNA-regulated proteins.
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Affiliation(s)
- Xue Yang
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences , Wuhan 430072, China.,University of Chinese Academy of Sciences , Beijing 100049, China
| | - Qian Xiong
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences , Wuhan 430072, China
| | - Ying Wu
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences , Wuhan 430072, China.,University of Chinese Academy of Sciences , Beijing 100049, China
| | - Siting Li
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences , Wuhan 430072, China.,University of Chinese Academy of Sciences , Beijing 100049, China
| | - Feng Ge
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences , Wuhan 430072, China
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116
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Wang Y, Ma Z, Kan P, Zhang B. The Diagnostic Value of Serum miRNA-221-3p, miRNA-382-5p, and miRNA-4271 in Ischemic Stroke. J Stroke Cerebrovasc Dis 2017; 26:1055-1060. [DOI: 10.1016/j.jstrokecerebrovasdis.2016.12.019] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 11/24/2016] [Accepted: 12/24/2016] [Indexed: 12/18/2022] Open
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117
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Tang M, Liu P, Li X, Wang JW, Zhu XC, He FP. Protective action of B1R antagonist against cerebral ischemia-reperfusion injury through suppressing miR-200c expression of Microglia-derived microvesicles. Neurol Res 2017; 39:612-620. [PMID: 28398146 DOI: 10.1080/01616412.2016.1275096] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Min Tang
- Department of Neurology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Ping Liu
- Department of Neurology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Xia Li
- Department of Neurology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Jian-wen Wang
- Department of Neurology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Xiong-chao Zhu
- Department of Neurology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Fang-ping He
- Department of Neurology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
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118
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Pei W, Tao L, Zhang LW, Zhang S, Cao J, Jiao Y, Tong J, Nie J. Circular RNA profiles in mouse lung tissue induced by radon. Environ Health Prev Med 2017; 22:36. [PMID: 29165116 PMCID: PMC5664590 DOI: 10.1186/s12199-017-0627-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 02/21/2017] [Indexed: 12/12/2022] Open
Abstract
Background Radon is a known human lung carcinogen, whose underlying carcinogenic mechanism remains unclear. Recently, circular RNA (circRNA), a class of endogenous non-protein coding RNAs that contain a circular loop, was found to exhibit multiple biological effects. In this study, circRNA profiles in mouse lung tissues between control and radon exposure were analyzed. Methods Six mice were exposed to radon at concentration of 100,000 Bq/m3, 12 h/d, for up to cumulative doses of 60 working level months (WLM). H&E staining and immunohistochemistry of caspase-3 were used to detect the damages in lung tissue. The lung tissue of control and exposed group were selected for circRNA microarray study. The circRNA/microRNA interaction was analyzed by starBase prediction software. 5 highest expressing circRNAs were selected by real-time PCR to validate the consistency in mouse lung tissue exposed to radon. Results Inflammatory reaction was found in mouse lung tissue exposed to radon, and caspase-3 expression was significantly increased. Microarray screening revealed 107 up-regulated and 83 down-regulated circRNAs, among which top 30 circRNAs with the highest fold changes were chosen for further analysis, with 5 microRNAs binding sites listed for each circRNA. Consistency of the top 5 circRNAs with the highest expressions were confirmed in mice exposed with 60WLM of radon. Conclusion Mouse lung tissue was severely injured when exposed to radon through pathological diagnosis and immunohistochemical analysis. A series of differentially expressed circRNAs demonstrated that they may play an important role in pulmonary toxicity induced by radon.
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Affiliation(s)
- Weiwei Pei
- School of Public Health, Medical College of Soochow University, Suzhou, 215123, China.,Jiangsu Key Laboratory of Preventive and Translational Medicine for Genetic Diseases, Suzhou, 215123, China
| | - Lijing Tao
- School of Public Health, Medical College of Soochow University, Suzhou, 215123, China.,Jiangsu Key Laboratory of Preventive and Translational Medicine for Genetic Diseases, Suzhou, 215123, China
| | - Leshuai W Zhang
- School of Radiation Medicine and Protection and Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, 215123, China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions and School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, 215123, China
| | - Shuyu Zhang
- School of Radiation Medicine and Protection and Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, 215123, China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions and School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, 215123, China
| | - Jianping Cao
- School of Radiation Medicine and Protection and Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, 215123, China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions and School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, 215123, China
| | - Yang Jiao
- School of Radiation Medicine and Protection and Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, 215123, China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions and School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, 215123, China
| | - Jian Tong
- School of Public Health, Medical College of Soochow University, Suzhou, 215123, China. .,Jiangsu Key Laboratory of Preventive and Translational Medicine for Genetic Diseases, Suzhou, 215123, China.
| | - Jihua Nie
- School of Public Health, Medical College of Soochow University, Suzhou, 215123, China. .,Jiangsu Key Laboratory of Preventive and Translational Medicine for Genetic Diseases, Suzhou, 215123, China.
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119
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Cardamone G, Paraboschi EM, Rimoldi V, Duga S, Soldà G, Asselta R. The Characterization of GSDMB Splicing and Backsplicing Profiles Identifies Novel Isoforms and a Circular RNA That Are Dysregulated in Multiple Sclerosis. Int J Mol Sci 2017; 18:ijms18030576. [PMID: 28272342 PMCID: PMC5372592 DOI: 10.3390/ijms18030576] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 02/20/2017] [Accepted: 03/01/2017] [Indexed: 01/08/2023] Open
Abstract
Abnormalities in alternative splicing (AS) are emerging as recurrent features in autoimmune diseases (AIDs). In particular, a growing body of evidence suggests the existence of a pathogenic association between a generalized defect in splicing regulatory genes and multiple sclerosis (MS). Moreover, several studies have documented an unbalance in alternatively-spliced isoforms in MS patients possibly contributing to the disease etiology. In this work, using a combination of PCR-based techniques (reverse-transcription (RT)-PCR, fluorescent-competitive, real-time, and digital RT-PCR assays), we investigated the alternatively-spliced gene encoding Gasdermin B, GSDMB, which was repeatedly associated with susceptibility to asthma and AIDs. The in-depth characterization of GSDMB AS and backsplicing profiles led us to the identification of an exonic circular RNA (ecircRNA) as well as of novel GSDMB in-frame and out-of-frame isoforms. The non-productive splicing variants were shown to be downregulated by the nonsense-mediated mRNA decay (NMD) in human cell lines, suggesting that GSDMB levels are significantly modulated by NMD. Importantly, both AS isoforms and the identified ecircRNA were significantly dysregulated in peripheral blood mononuclear cells of relapsing-remitting MS patients compared to controls, further supporting the notion that aberrant RNA metabolism is a characteristic feature of the disease.
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Affiliation(s)
- Giulia Cardamone
- Department of Biomedical Sciences, Humanitas University, Via Manzoni 113, 20089 Rozzano, Milan, Italy.
| | - Elvezia Maria Paraboschi
- Department of Biomedical Sciences, Humanitas University, Via Manzoni 113, 20089 Rozzano, Milan, Italy.
| | - Valeria Rimoldi
- Department of Biomedical Sciences, Humanitas University, Via Manzoni 113, 20089 Rozzano, Milan, Italy.
- Humanitas Clinical and Research Center, Via Manzoni 56, 20089 Rozzano, Milan, Italy.
| | - Stefano Duga
- Department of Biomedical Sciences, Humanitas University, Via Manzoni 113, 20089 Rozzano, Milan, Italy.
- Humanitas Clinical and Research Center, Via Manzoni 56, 20089 Rozzano, Milan, Italy.
| | - Giulia Soldà
- Department of Biomedical Sciences, Humanitas University, Via Manzoni 113, 20089 Rozzano, Milan, Italy.
- Humanitas Clinical and Research Center, Via Manzoni 56, 20089 Rozzano, Milan, Italy.
| | - Rosanna Asselta
- Department of Biomedical Sciences, Humanitas University, Via Manzoni 113, 20089 Rozzano, Milan, Italy.
- Humanitas Clinical and Research Center, Via Manzoni 56, 20089 Rozzano, Milan, Italy.
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120
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Hu X, Feng Y, Sun L, Qu L, Sun C. Roles of microRNA-330 and Its Target Gene ING4 in the Development of Aggressive Phenotype in Hepatocellular Carcinoma Cells. Dig Dis Sci 2017; 62:715-722. [PMID: 28050784 DOI: 10.1007/s10620-016-4429-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 12/20/2016] [Indexed: 01/11/2023]
Abstract
BACKGROUND Aberrant expression of microRNAs contributes to tumor growth and progression. AIMS This study was designed to explore the prognostic and biological significance of miR-330 in hepatocellular carcinoma (HCC). METHODS The expression of miR-330 and its associations with tumor parameters and overall survival were analyzed in HCC patients. The biological functions of miR-330 in HCC cell growth, invasion, and tumorigenesis were investigated. Bioinformatic analysis and luciferase reporter assays were performed to search for potential targets of miR-330. RESULTS The miR-330 level was significantly higher in HCCs than in adjacent normal tissues (P = 0.0085). High expression of miR-330 was significantly associated with more aggressive phenotypes and shorter overall survival in HCC. Loss- and gain-of-function studies indicated the favorable effect of miR-330 on tumor cell growth, invasion, and tumorigenesis. Inhibitor of growth 4 (ING4) was identified to be a direct target of miR-330. Overexpression of miR-330 reduced the expression of ING4 in HCC cells. Importantly, restoration of ING4 almost completely reversed the promotion of HCC cell proliferation and invasion by miR-330. CONCLUSIONS Altogether, this study demonstrates that upregulation of miR-330 is associated with poor prognosis and contributes to more aggressive phenotypes of HCC. The oncogenic role of miR-330 in HCC is linked to downregulation of ING4.
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Affiliation(s)
- Xiao Hu
- Department of Hepatopancreatobiliary Surgery, The Affiliated Hospital of Qingdao University, No. 16, Jiangsu Road, Qingdao, 266003, China
| | - Yujie Feng
- Department of Hepatopancreatobiliary Surgery, The Affiliated Hospital of Qingdao University, No. 16, Jiangsu Road, Qingdao, 266003, China
| | - Lin Sun
- Department of ICU, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Linlin Qu
- Department of Hepatopancreatobiliary Surgery, The Affiliated Hospital of Qingdao University, No. 16, Jiangsu Road, Qingdao, 266003, China
| | - Chuandong Sun
- Department of Hepatopancreatobiliary Surgery, The Affiliated Hospital of Qingdao University, No. 16, Jiangsu Road, Qingdao, 266003, China.
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121
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CircRNA_000203 enhances the expression of fibrosis-associated genes by derepressing targets of miR-26b-5p, Col1a2 and CTGF, in cardiac fibroblasts. Sci Rep 2017; 7:40342. [PMID: 28079129 PMCID: PMC5228128 DOI: 10.1038/srep40342] [Citation(s) in RCA: 196] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 12/05/2016] [Indexed: 01/11/2023] Open
Abstract
Circular RNAs (circRNAs) participate in regulating gene expression in diverse biological and pathological processes. The present study aimed to investigate the mechanism underlying the modulation of circRNA_000203 on expressions of fibrosis-associated genes in cardiac fibroblasts. CircRNA_000203 was shown upregulated in the diabetic mouse myocardium and in Ang-II-induced mouse cardiac fibroblasts. Enforced-expression of circRNA_000203 could increase expressions of Col1a2, Col3a1 and α-SMA in mouse cardiac fibroblasts. RNA pull-down and RT-qPCR assay indicated that circRNA_000203 could specifically sponge miR-26b-5p. Dual luciferase reporter assay revealed that miR-26b-5p interacted with 3′UTRs of Col1a2 and CTGF, and circ_000203 could block the interactions of miR-26b-5p and 3′UTRs of Col1a2 and CTGF. Transfection of miR-26b-5p could post-transcriptionaly inhibit expressions of Col1a2 and CTGF, accompanied with the suppressions of Col3a1 and α-SMA in cardiac fibroblasts. Additionally, over-expression of circRNA_000203 could eliminate the anti-fibrosis effect of miR-26b-5p in cardiac fibroblasts. Together, our results reveal that suppressing the function of miR-26b-5p contributes to the pro-fibrosis effect of circRNA_000203 in cardiac fibroblasts.
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122
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Dong WW, Li HM, Qing XR, Huang DH, Li HG. Identification and characterization of human testis derived circular RNAs and their existence in seminal plasma. Sci Rep 2016; 6:39080. [PMID: 27958373 PMCID: PMC5153637 DOI: 10.1038/srep39080] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 11/17/2016] [Indexed: 12/19/2022] Open
Abstract
Circular RNAs (circRNAs) have emerged as novel molecules of interest in gene regulation as other noncoding RNAs. Though they have been explored in some species and tissues, the expression and functions of circRNAs in human reproductive systems remain unknown. Here we revealed the expression profiles of circRNAs in human testis tissue using high-throughput sequencing. The conformation of these testis-derived circRNAs in seminal plasma was also investigated, aiming to provide a non-invasive liquid biopsy surrogate for testicular biopsy. We predicted >15,000 circRNAs in human testis, with most of them (10,792; 67%) new. In all the 5,928 circRNA forming genes, 1,017 are first reported by us to generate circRNAs. Interestingly, these genes are mostly related to spermatogenesis, sperm motility, fertilization, etc. The sequence feature, chromosome location, alternative splicing and other characteristics of the circRNAs in human testis were also explored. Moreover, we found that these testis-derived circRNAs could be stably detected in seminal plasma. Most of them were probably bound with proteins in seminal plasma and were very stable at room temperature. Our work has laid the foundations to decipher regulation mechanisms of circRNAs in spermatogenesis and to develop circRNAs as novel noninvasive biomarkers for male infertile diseases.
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Affiliation(s)
- Wei-Wei Dong
- Family Planning Research Institute/Center of Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Hui-Min Li
- Family Planning Research Institute/Center of Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Xing-Rong Qing
- Family Planning Research Institute/Center of Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Dong-Hui Huang
- Family Planning Research Institute/Center of Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China.,Wuhan Tongji Reproductive Medicine Hospital, Wuhan, 430030, P. R. China
| | - Hong-Gang Li
- Family Planning Research Institute/Center of Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China.,Wuhan Tongji Reproductive Medicine Hospital, Wuhan, 430030, P. R. China
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123
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Kumar L, Shamsuzzama, Haque R, Baghel T, Nazir A. Circular RNAs: the Emerging Class of Non-coding RNAs and Their Potential Role in Human Neurodegenerative Diseases. Mol Neurobiol 2016; 54:7224-7234. [PMID: 27796758 DOI: 10.1007/s12035-016-0213-8] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 10/11/2016] [Indexed: 01/01/2023]
Abstract
The exciting world of research with RNAs has to its credit some breakthrough findings that led to newer insights on multiple problems including that of human diseases. After the advent of siRNA, microRNA, and lncRNA, exciting novel molecules called circular RNAs (circRNAs) have been recently described. circRNAs are a class of non-coding RNAs, which are produced by scrambling of exons at the time of splicing. They are primarily produced in the brain region and are naturally present inside the cell. The best known ones so far include a particular type of circRNA namely "circular RNA sponge for miR-7" (ciRS-7 and CDR1as) which is the inhibitor of miR-7 microRNA-known to regulate various diseases like, cancer, neurodegenerative diseases, diabetes, and atherosclerosis. Similarly, another circRNA molecule called circmbl modulates the ratio of linear mRNA by competing with linear muscleblind gene through which it is synthesized. Considering the complex association of these molecules with critical microRNAs and gene families, circRNAs might have important roles in the cause and progression of human diseases. In particular, the multi-factorial nature of neurodegenerative diseases does warrant studies employing novel approaches towards identifying underlying root causes of these ailments. The non-coding RNAs, like circRNAs and microRNAs, could well present a common genetic trigger to multiple factors associated with neurodegenerative diseases. A specific fingerprint of a combination of various marker circRNAs could be explored for early diagnostic purpose as well. Herein, we review the possibility of exploring the role of circRNAs in the context of the central nervous system (CNS) and age-associated neurodegenerative diseases.
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Affiliation(s)
- Lalit Kumar
- Laboratory of Functional Genomics and Molecular Toxicology, Division of Toxicology, CSIR-Central Drug Research Institute, Lucknow, 226 031, India
| | - Shamsuzzama
- Laboratory of Functional Genomics and Molecular Toxicology, Division of Toxicology, CSIR-Central Drug Research Institute, Lucknow, 226 031, India
| | - Rizwanul Haque
- Laboratory of Functional Genomics and Molecular Toxicology, Division of Toxicology, CSIR-Central Drug Research Institute, Lucknow, 226 031, India
| | - Tanvi Baghel
- Laboratory of Functional Genomics and Molecular Toxicology, Division of Toxicology, CSIR-Central Drug Research Institute, Lucknow, 226 031, India
| | - Aamir Nazir
- Laboratory of Functional Genomics and Molecular Toxicology, Division of Toxicology, CSIR-Central Drug Research Institute, Lucknow, 226 031, India.
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124
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Milanesi E, Maj C, Bocchio-Chiavetto L, Maffioletti E. Nanomedicine in Psychiatry: New Therapeutic Opportunities from Research on Small RNAs. Drug Dev Res 2016; 77:453-457. [PMID: 27633768 DOI: 10.1002/ddr.21344] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 08/09/2016] [Indexed: 11/08/2022]
Abstract
Preclinical Research Alterations in small non-coding RNAs have been observed in many human disease states including cancer, cardiovascular, developmental, neurological, and psychiatric disorders. These molecules have recently raised the interest of the scientific community for novel therapeutic approaches. Nanotechnologies, including the development of sophisticated nanoparticles, offer new ways for the delivery of small RNA-based therapies. The nanoparticle delivery method appears attractive, but so far most of the work in this area has been conducted in the context of cancer. New therapeutic strategies are needed for psychiatric disorders, where treatment is often ineffective, leading to frequent patient hospitalizations and a growing economic burden. In this article, we discuss the role of small RNAs in psychiatric diseases and how this new knowledge, combined with innovations in nanotechnologies, could lead to the development of novel therapeutic approaches. Drug Dev Res 77 : 453-457, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Elena Milanesi
- Genetics Unit, IRCCS Centro S. Giovanni di Dio, Fatebenefratelli, Brescia, Italy
| | - Carlo Maj
- Genetics Unit, IRCCS Centro S. Giovanni di Dio, Fatebenefratelli, Brescia, Italy
| | - Luisella Bocchio-Chiavetto
- Genetics Unit, IRCCS Centro S. Giovanni di Dio, Fatebenefratelli, Brescia, Italy.,Faculty of Psychology, eCampus University, Novedrate, Como, Italy
| | - Elisabetta Maffioletti
- Genetics Unit, IRCCS Centro S. Giovanni di Dio, Fatebenefratelli, Brescia, Italy.,Faculty of Psychology, eCampus University, Novedrate, Como, Italy
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125
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van Rossum D, Verheijen BM, Pasterkamp RJ. Circular RNAs: Novel Regulators of Neuronal Development. Front Mol Neurosci 2016; 9:74. [PMID: 27616979 PMCID: PMC4999478 DOI: 10.3389/fnmol.2016.00074] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 08/10/2016] [Indexed: 12/11/2022] Open
Abstract
Circular RNAs (circRNAs) are highly stable, circularized long non-coding RNAs. circRNAs are conserved across species and appear to be specifically enriched in the nervous system. Recent studies show that many circRNAs are expressed in a tissue- and developmental-stage-specific manner, reveal a striking regulation of circRNAs during neuronal development, and detect their presence at synaptic sites. The exact functions of circRNAs remain poorly understood, but evidence from analysis of some circRNA molecules suggests that they could substantially contribute to the regulation of gene expression, particularly in architecturally complex and polarized cells such as neurons. Emerging evidence also indicates that circRNAs are involved in the development and progression of various neurological disorders. In this review, we summarize the molecular characteristics of circRNAs and discuss their proposed functions and mechanism-of-action in developing neurons.
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Affiliation(s)
- Daniëlle van Rossum
- Department of Translational Neuroscience, Brain Center Rudolf Magnus, University Medical Center Utrecht Utrecht, Netherlands
| | - Bert M Verheijen
- Department of Translational Neuroscience, Brain Center Rudolf Magnus, University Medical Center UtrechtUtrecht, Netherlands; Department of Neurology and Neurosurgery, Brain Center Rudolf Magnus, University Medical Center UtrechtUtrecht, Netherlands
| | - R Jeroen Pasterkamp
- Department of Translational Neuroscience, Brain Center Rudolf Magnus, University Medical Center Utrecht Utrecht, Netherlands
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