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Zhang Y, Li W, Li H, Zhou M, Zhang J, Fu Y, Zhang C, Sun X. Circ_USP36 Silencing Attenuates Oxidized Low-Density Lipoprotein-Induced Dysfunction in Endothelial Cells in Atherosclerosis Through Mediating miR-197-3p/ROBO1 Axis. J Cardiovasc Pharmacol 2021; 78:e761-e772. [PMID: 34369900 DOI: 10.1097/fjc.0000000000001124] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 07/15/2021] [Indexed: 11/25/2022]
Abstract
ABSTRACT Circular RNAs (circRNAs) are reported to play pivotal regulatory roles in atherosclerosis progression. In the present study, we explored the biological role of circRNA ubiquitin-specific peptidase 36 (circ_USP36; hsa_circ_0003204) in oxidized low-density lipoprotein (ox-LDL)-induced dysfunction of endothelial cells (ECs). RNA and protein levels were determined by reverse transcription-quantitative polymerase chain reaction and Western blot assay, respectively. Cell proliferation was analyzed by 5-ethynyl-2'-deoxyuridine assay and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Flow cytometry was conducted to analyze cell cycle progression and cell apoptosis. The release of tumor necrosis factor α in the supernatant was measured by enzyme linked immunosorbent assay. Cell death was evaluated by lactate dehydrogenase assay. Intermolecular interaction was verified by dual-luciferase reporter assay. Circ_USP36 expression was significantly up-regulated in the serum of atherosclerosis patients and ox-LDL-stimulated HUVECs than that in their corresponding controls. ox-LDL exposure inhibited the proliferation ability and cell cycle progression and triggered the apoptosis and inflammation of HUVECs, and these effects were largely overturned by the knockdown of circ_USP36. microRNA-197-3p (miR-197-3p) was a target of circ_USP36, and circ_USP36 knockdown-mediated protective role in ox-LDL-induced HUVECs was largely counteracted by the silence of miR-197-3p. miR-197-3p interacted with the 3' untranslated region of roundabout guidance receptor 1 (ROBO1). Circ_USP36 knockdown reduced ROBO1 expression partly by up-regulating miR-197-3p in HUVECs. ROBO1 overexpression reversed miR-197-3p accumulation-mediated effects in ox-LDL-induced HUVECs. In conclusion, circ_USP36 interference alleviated ox-LDL-induced dysfunction in HUVECs by targeting miR-197-3p/ROBO1 axis.
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Affiliation(s)
- Yixin Zhang
- Department of Endocrinology, the Second Affiliated Hospital of Qiqihar Medical University, Qiqihar City, Heilongjiang, China; and
| | - Wenhua Li
- Department of Cardiovascular Medicine, the Third Affiliated Hospital of Qiqihar Medical University, Qiqihar City, Heilongjiang, China
| | - Hui Li
- Department of Endocrinology, the Second Affiliated Hospital of Qiqihar Medical University, Qiqihar City, Heilongjiang, China; and
| | - Min Zhou
- Department of Endocrinology, the Second Affiliated Hospital of Qiqihar Medical University, Qiqihar City, Heilongjiang, China; and
| | - Jian Zhang
- Department of Endocrinology, the Second Affiliated Hospital of Qiqihar Medical University, Qiqihar City, Heilongjiang, China; and
| | - Yongli Fu
- Department of Endocrinology, the Second Affiliated Hospital of Qiqihar Medical University, Qiqihar City, Heilongjiang, China; and
| | - Chunhui Zhang
- Department of Endocrinology, the Second Affiliated Hospital of Qiqihar Medical University, Qiqihar City, Heilongjiang, China; and
| | - Xiaozhu Sun
- Department of Endocrinology, the Second Affiliated Hospital of Qiqihar Medical University, Qiqihar City, Heilongjiang, China; and
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Guo C, Mi J, Li H, Su P, Nie H. Dysregulated circular RNAs as novel biomarkers in esophageal squamous cell carcinoma: a meta-analysis. Cancer Med 2021; 10:7895-7908. [PMID: 34704390 PMCID: PMC8607254 DOI: 10.1002/cam4.3703] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 10/18/2020] [Indexed: 01/10/2023] Open
Abstract
Introduction Circular RNAs (circRNAs) play critical roles in tumorigenesis, but their clinical efficacy in esophageal squamous cell carcinoma (ESCC) still retains controversial. This meta‐analysis aims at evaluating the associations between circRNA expressions and clinicopathologic features as well as the diagnostic and prognostic values of circRNAs in ESCC. Materials & Methods PubMed, EMBASE, and other online databases were systematically searched to collect studies on circRNAs and clinicopathological features, diagnostic, and/or prognostic assessments of ESCC. The quality of included studies was evaluated using the Quality Assessment of Diagnostic Accuracy Studies 2 (QUADAS‐2) and Newcastle‐Ottawa Scale (NOS) scales. The included studies were quantitatively weighted and merged, and diagnostic indicators, hazard ratios (HRs) and the corresponding 95% confidence intervals (CIs) were calculated. P values were merged by Fisher᾽s method. Sources of heterogeneity were traced using subgroup, sensitivity, and meta‐regression analyses. Results As a result, 12 studies were included, representing 769 ESCC patients. The meta‐analysis showed that abnormal expressions of circRNAs were associated to TNM stage as well as lymph node and distant metastases in ESCC cases. CircRNA was used to distinguish ESCC patients from healthy controls, and the merged sensitivity, specificity, and the area under the curve (AUC) of ESCC were 0.78 (95% CI: 0.74–0.81), 0.79 (95% CI: 0.75–0.83), and 0.86, respectively. The survival analysis showed that upregulated oncogenic circRNA levels in ESCC tissues was associated with the shorter overall survival (OS) of the patients (univariate analysis: HR = 2.25, 95% CI: 1.71–2.95, p = 0.000, I2 = 0.0%; multivariate analysis: HR = 2.50, 95% CI: 1.61–3.89, p = 0.000, I2 = 0.0%), while the OS of ESCC patients presenting overexpressions of tumor‐suppressive circRNAs was significantly ameliorated (HR = 0.29, 95% CI: 0.20–0.42, p = 0.000, I2 = 0.0%). The subgroup analyses based on circRNA biofunctions, sample size, and reference gene also revealed robust results. Conclusion CircRNAs can be used as promising molecular biomarkers for the early diagnosis and prognosis monitoring of ESCC.
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Affiliation(s)
- Chengcheng Guo
- Department of Pathology, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, China
| | - Jianqiang Mi
- Department of Pathology, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, China
| | - Haike Li
- Faculty of Basic Medicine, Henan Vocational College of Tuina, Luoyang, China
| | - Panke Su
- Department of Pathology, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, China
| | - He Nie
- Department of Nuclear Medicine, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, China
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Papaspyropoulos A, Hazapis O, Lagopati N, Polyzou A, Papanastasiou AD, Liontos M, Gorgoulis VG, Kotsinas A. The Role of Circular RNAs in DNA Damage Response and Repair. Cancers (Basel) 2021; 13:cancers13215352. [PMID: 34771517 PMCID: PMC8582540 DOI: 10.3390/cancers13215352] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/15/2021] [Accepted: 10/15/2021] [Indexed: 12/12/2022] Open
Abstract
Circular RNAs (circRNA) comprise a distinct class of non-coding RNAs that are abundantly expressed in the cell. CircRNAs have the capacity to regulate gene expression by interacting with regulatory proteins and/or other classes of RNAs. While a vast number of circRNAs have been discovered, the majority still remains poorly characterized. Particularly, there is no detailed information on the identity and functional role of circRNAs that are transcribed from genes encoding components of the DNA damage response and repair (DDRR) network. In this article, we not only review the available published information on DDRR-related circRNAs, but also conduct a bioinformatic analysis on data obtained from public repositories to uncover deposited, yet uncharacterized circRNAs derived from components of the DDRR network. Finally, we interrogate for potential targets that are regulated by this class of molecules and look into potential functional implications.
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Affiliation(s)
- Angelos Papaspyropoulos
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
- Biomedical Research Foundation, Academy of Athens, GR-11527 Athens, Greece
| | - Orsalia Hazapis
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
| | - Nefeli Lagopati
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
- Biomedical Research Foundation, Academy of Athens, GR-11527 Athens, Greece
| | - Aikaterini Polyzou
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
| | - Anastasios D. Papanastasiou
- Department of Biomedical Sciences, University of West Attica, GR-12462 Athens, Greece;
- Histopathology Unit, Biomedical Sciences Research Center ‘Alexander Fleming’, GR-16672 Vari, Greece
| | - Michalis Liontos
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
- Oncology Unit, Department of Clinical Therapeutics, Medical School, National and Kapodistrian University of Athens, Alexandra Hospital, GR-11528 Athens, Greece
| | - Vassilis G. Gorgoulis
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
- Biomedical Research Foundation, Academy of Athens, GR-11527 Athens, Greece
- Molecular and Clinical Cancer Sciences, Manchester Cancer Research Centre, Manchester Academic Health Sciences Centre, University of Manchester, Manchester M20 4GJ, UK
- Center for New Biotechnologies and Precision Medicine, Medical School, National and Kapodistrian University of Athens, GR-11527 Athens, Greece
- Faculty of Health and Medical Sciences, University of Surrey, Surrey GU2 7YH, UK
- Correspondence: (V.G.G.); (A.K.); Tel.: +30-210-746-2352 (V.G.G.); +30-210-746-2420 (A.K.)
| | - Athanassios Kotsinas
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
- Correspondence: (V.G.G.); (A.K.); Tel.: +30-210-746-2352 (V.G.G.); +30-210-746-2420 (A.K.)
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circSLC30A7 Inhibits Hepatocellular Carcinoma Cell Proliferation via the miR-767-5p/FBXW7/NOTCH1 Axis. JOURNAL OF ONCOLOGY 2021; 2021:8800657. [PMID: 34675978 PMCID: PMC8526270 DOI: 10.1155/2021/8800657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 09/24/2021] [Indexed: 12/24/2022]
Abstract
Circular RNAs, noncoding RNAs, have attracted much attention in various human tumor research fields. They regulate the development of various human cancers via microRNA sponges. This study aimed to assess the molecular mechanism of circSLC30A7 in hepatocellular carcinoma (HCC). In our study, we identified that circSLC30A7 was significantly downregulated in HCC cell lines and tissues. Furthermore, gain and loss function experiments were conducted to elucidate the biological functions of circSLC30A7 in HCC cell lines. Mechanistically, circSLC30A7 sponged miR-767-5p, inhibiting the expression of its downstream protein, FBXW7. In summary, this study revealed that circSLC30A7 is an essential tumor suppressor that inhibits HCC tumorigenesis through the miR-767-5p/FBXW7/NOTCH1 axis. Taken together, circSLC30A7 reduces HCC malignancy and can be a biomarker for HCC management.
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155
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Xiao Q, Dai J, Luo J. A survey of circular RNAs in complex diseases: databases, tools and computational methods. Brief Bioinform 2021; 23:6407737. [PMID: 34676391 DOI: 10.1093/bib/bbab444] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/21/2021] [Accepted: 09/28/2021] [Indexed: 01/22/2023] Open
Abstract
Circular RNAs (circRNAs) are a category of novelty discovered competing endogenous non-coding RNAs that have been proved to implicate many human complex diseases. A large number of circRNAs have been confirmed to be involved in cancer progression and are expected to become promising biomarkers for tumor diagnosis and targeted therapy. Deciphering the underlying relationships between circRNAs and diseases may provide new insights for us to understand the pathogenesis of complex diseases and further characterize the biological functions of circRNAs. As traditional experimental methods are usually time-consuming and laborious, computational models have made significant progress in systematically exploring potential circRNA-disease associations, which not only creates new opportunities for investigating pathogenic mechanisms at the level of circRNAs, but also helps to significantly improve the efficiency of clinical trials. In this review, we first summarize the functions and characteristics of circRNAs and introduce some representative circRNAs related to tumorigenesis. Then, we mainly investigate the available databases and tools dedicated to circRNA and disease studies. Next, we present a comprehensive review of computational methods for predicting circRNA-disease associations and classify them into five categories, including network propagating-based, path-based, matrix factorization-based, deep learning-based and other machine learning methods. Finally, we further discuss the challenges and future researches in this field.
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Affiliation(s)
- Qiu Xiao
- Hunan Normal University and Hunan Xiangjiang Artificial Intelligence Academy, Changsha, China
| | - Jianhua Dai
- Hunan Normal University and Hunan Xiangjiang Artificial Intelligence Academy, Changsha, China
| | - Jiawei Luo
- College of Computer Science and Electronic Engineering, Hunan University, Changsha, China
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156
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Mafi A, Yadegar N, Salami M, Salami R, Vakili O, Aghadavod E. Circular RNAs; powerful microRNA sponges to overcome diabetic nephropathy. Pathol Res Pract 2021; 227:153618. [PMID: 34649056 DOI: 10.1016/j.prp.2021.153618] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 09/09/2021] [Accepted: 09/11/2021] [Indexed: 12/13/2022]
Abstract
Diabetic nephropathy (DN), also known as diabetic kidney disease (DKD), is a drastic renal complication of type 1 and type 2 diabetes mellitus (DM). Poorly controlled DM over the years, may disrupt kidneys' blood vessels, leading to the hypertension (HTN) and DN onset. During DN, kidneys' waste filtering ability becomes disturbed. Being on a healthy lifestyle and controlling both DM and HTN are now the best proceedings to prevent or at least delay DN occurrence. Unfortunately, about one-fourth of diabetic individuals eventually experience the corresponding renal failure, and thus it is critical to discover effective diagnostic biomarkers and therapeutic strategies to combat DN. In the past few years, circular RNAs (circRNAs), as covalently closed endogenous non-coding RNAs (ncRNAs), are believed to affect DN pathogenesis in a positive manner. CircRNAs are able to impact different cellular processes and signaling pathways by targeting biological molecules or various molecular mechanisms. Still, as a key regulatory axis, circRNAs can select miRNAs as their molecular targets, in which they are considered as miRNA sponges. In this way, circRNA-induced suppression of particular miRNAs may prevent from DN progression or promotes the DN elimination. Since the expression of circRNAs has also been reported to be increased in DN-associated cells and tissues, they can be employed as either diagnostic biomarkers or therapeutic targets.
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Affiliation(s)
- Alireza Mafi
- Department of Clinical Biochemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Negar Yadegar
- Department of Medical Laboratory Sciences, School of Paramedical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Marziyeh Salami
- Department of Biochemistry, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran.
| | - Raziyeh Salami
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran.
| | - Omid Vakili
- Department of Clinical Biochemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Esmat Aghadavod
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran; Department of Clinical Biochemistry, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran.
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Xiong F, Mao R, Zhang L, Zhao R, Tan K, Liu C, Xu J, Du G, Zhang T. CircNPHP4 in monocyte-derived small extracellular vesicles controls heterogeneous adhesion in coronary heart atherosclerotic disease. Cell Death Dis 2021; 12:948. [PMID: 34650036 PMCID: PMC8516978 DOI: 10.1038/s41419-021-04253-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 08/26/2021] [Accepted: 09/23/2021] [Indexed: 12/31/2022]
Abstract
Small extracellular vesicles (sEVs)-derived circular RNAs (circRNAs) could regulate gene expression in recipient cells, and dysregulation of sEVs-derived circRNAs has been implicated in several diseases. However, the expression and function of sEVs-derived circRNAs in coronary heart atherosclerotic disease (CAD) remain unknown. In this study, we investigated global changes in the expression patterns of circRNAs in sEVs from CAD-related monocytes and identified circNPHP4 as a significantly upregulated circRNA. Knockdown of circNPHP4 inhibited heterogeneous adhesion between monocytes and coronary artery endothelial cells and reduced ICAM-1 and VCAM-1 expression. Investigations of the underlying mechanisms revealed that circNPHP4 contains a functional miR-1231-binding site. Mutation of the circNPHP4-binding sites in miR-1231 abolished the interaction, as indicated by a luciferase reporter assay. Furthermore, circNPHP4 affected the expression of miR-1231 and its target gene EGFR. Overexpression of miR-1231 blocked the inhibitory effect of circNPHP4 on heterogeneous adhesion. Moreover, downregulation of miR-1231 restored heterogeneous adhesion upon inhibition by circNPHP4 silencing. Additionally, circNPHP4 overexpression was correlated with aggressive clinicopathological characteristics in CAD patients. A multivariate logistic regression model and bootstrapping validation showed that circNPHP4 overexpression had a good risk prediction capability for CAD. The decision curve analysis revealed that using the CAD nomogram that included circNPHP4 overexpression to predict the risk of CAD was beneficial. Our results suggest that sEVs-derived circNPHP4 can serve as a potential target for CAD treatments or as a potential diagnostic marker for CAD patients.
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Affiliation(s)
- Feng Xiong
- Department of Cardiology, Cadiovascular Institute of Chengdu, Chengdu Third People's hospital, Chengdu, 610031, China.
| | - Rui Mao
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China
| | - Lijuan Zhang
- Department of Cardiology, Cadiovascular Institute of Chengdu, Chengdu Third People's hospital, Chengdu, 610031, China
| | - Ruohan Zhao
- Department of Cardiology, Cadiovascular Institute of Chengdu, Chengdu Third People's hospital, Chengdu, 610031, China
| | - Kunyue Tan
- Department of Cardiology, Cadiovascular Institute of Chengdu, Chengdu Third People's hospital, Chengdu, 610031, China
| | - Chunxia Liu
- Department of Cardiology, Cadiovascular Institute of Chengdu, Chengdu Third People's hospital, Chengdu, 610031, China
| | - JunBo Xu
- Department of Cardiology, Cadiovascular Institute of Chengdu, Chengdu Third People's hospital, Chengdu, 610031, China
| | - Guanghong Du
- Geriatric Department, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, Sichuan, 610072, China.
| | - Tongtong Zhang
- Medical Research Center, The Third People's Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, The Second Chengdu Hospital Affiliated to Chongqing Medical University, Chengdu, Sichuan, 610031, China.
- Center of Gastrointestinal and Minimally Invasive Surgery, Department of General Surgery, The Third People's Hospital of Chengdu, Affiliated Hospital of Southwest Jiaotong University & The Second Affiliated Hospital of Chengdu, Chongqing Medical University, Chengdu, 610031, China.
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158
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Sadeghi S, Rahaie M, Ostad-Hasanzadeh B. Nanostructures in non-invasive prenatal genetic screening. Biomed Eng Lett 2021; 12:3-18. [DOI: 10.1007/s13534-021-00208-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 08/22/2021] [Accepted: 10/02/2021] [Indexed: 11/24/2022] Open
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159
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Gao L, Xia T, Qin M, Xue X, Jiang L, Zhu X. CircPTK2 Suppresses the Progression of Gastric Cancer by Targeting the MiR-196a-3p/AATK Axis. Front Oncol 2021; 11:706415. [PMID: 34604044 PMCID: PMC8479173 DOI: 10.3389/fonc.2021.706415] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 08/26/2021] [Indexed: 12/16/2022] Open
Abstract
Background Gastric cancer is a type of malignant tumor with high morbidity and mortality. It has been shown that circular RNAs (circRNAs) exert critical roles in gastric cancer progression via working as microRNA (miRNA) sponges to regulate gene expression. However, the role and potential molecular mechanism of circRNAs in gastric cancer remain largely unknown. Methods CircPTK2 (hsa_circ_0005273) was identified by bioinformatics analysis and validated by RT-qPCR assay. Bioinformatics prediction, dual-luciferase reporter, and RNA pull-down assays were used to determine the interaction between circPTK2, miR-196a-3p, and apoptosis-associated tyrosine kinase 1 (AATK). Results The level of circPTK2 was markedly downregulated in gastric cancer tissues and gastric cancer cells. Upregulation of circPTK2 significantly suppressed the proliferation, migration, and invasion of gastric cancer cells, while circPTK2 knockdown exhibited opposite effects. Mechanically, circPTK2 could competitively bind to miR-196a-3p and prevent miR-196a-3p to reduce the expression of AATK. In addition, overexpression of circPTK2 inhibited tumorigenesis in a xenograft mouse model of gastric cancer. Conclusion Collectively, circPTK2 functions as a tumor suppressor to suppress gastric cancer cell proliferation, migration, and invasion through regulating the miR-196a-3p/AATK axis, suggesting that circPTK2 may serve as a novel therapeutic target for gastric cancer.
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Affiliation(s)
- Ling Gao
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Tingting Xia
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Mingde Qin
- Department of the Stem Cell and Biomedical Material Key Laboratory of Jiangsu Province (the State Key Laboratory Incubation Base), Soochow University, Suzhou, China
| | - Xiaofeng Xue
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Linhua Jiang
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xinguo Zhu
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
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Wang J, Yang B, Wu C, Guo Y, Jiang X, Zhang Y. Role of circular RNAs in osteoarthritis (Review). Exp Ther Med 2021; 22:1279. [PMID: 34594416 PMCID: PMC8456490 DOI: 10.3892/etm.2021.10714] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 08/11/2021] [Indexed: 11/12/2022] Open
Abstract
Osteoarthritis (OA) is a chronic bone and joint disease characterized by articular cartilage degeneration and joint inflammation. OA is the most common form of arthritis, and the major clinical manifestations of OA are chronic pain and joint activity disorder, which severely affect patients' quality of life. Circular RNA (circRNA) is a type of non-coding RNA that is ubiquitous in eukaryotic cells. Unlike standard linear RNAs, they form a covalently closed continuous loop without 5' or 3' polarity. They are usually considered as byproducts of mis-splicing or mRNA processing. CircRNAs have been detected and identified in numerous species. Various studies have confirmed that certain circRNAs are differentially expressed in OA cartilage and are closely associated with a variety of pathological processes of OA, including extracellular matrix degradation, inflammation and apoptosis. The present study reviewed the latest research on circRNAs in the pathogenesis of OA, providing a novel direction for the prevention, diagnosis and treatment of OA.
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Affiliation(s)
- Jicheng Wang
- Department of Joint Surgery, Weifang People's Hospital, Weifang, Shandong 261000, P.R. China
| | - Bo Yang
- Department of Joint Surgery, Weifang People's Hospital, Weifang, Shandong 261000, P.R. China
| | - Changkun Wu
- Department of Joint Surgery, Weifang People's Hospital, Weifang, Shandong 261000, P.R. China
| | - Yongzhi Guo
- Department of Joint Surgery, Weifang People's Hospital, Weifang, Shandong 261000, P.R. China
| | - Xin Jiang
- Department of Joint Surgery, Weifang People's Hospital, Weifang, Shandong 261000, P.R. China
| | - Yangyang Zhang
- Department of Joint Surgery, Weifang People's Hospital, Weifang, Shandong 261000, P.R. China
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161
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Wang X, Parodi L, Hawkins SM. Translational Applications of Linear and Circular Long Noncoding RNAs in Endometriosis. Int J Mol Sci 2021; 22:10626. [PMID: 34638965 PMCID: PMC8508676 DOI: 10.3390/ijms221910626] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/26/2021] [Accepted: 09/28/2021] [Indexed: 12/12/2022] Open
Abstract
Endometriosis is a chronic gynecologic disease that negatively affects the quality of life of many women. Unfortunately, endometriosis does not have a cure. The current medical treatments involve hormonal manipulation with unwanted side effects and high recurrence rates after stopping the medication. Sadly, a definitive diagnosis for endometriosis requires invasive surgical procedures, with the risk of complications, additional surgeries in the future, and a high rate of recurrence. Both improved therapies and noninvasive diagnostic tests are needed. The unique molecular features of endometriosis have been studied at the coding gene level. While the molecular components of endometriosis at the small RNA level have been studied extensively, other noncoding RNAs, such as long intergenic noncoding RNAs and the more recently discovered subset of long noncoding RNAs called circular RNAs, have been studied more limitedly. This review describes the molecular formation of long noncoding and the unique circumstances of the formation of circular long noncoding RNAs, their expression and function in endometriosis, and promising preclinical studies. Continued translational research on long noncoding RNAs, including the more stable circular long noncoding RNAs, may lead to improved therapeutic and diagnostic opportunities.
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Affiliation(s)
- Xiyin Wang
- Department of Obstetrics and Gynecology, Indiana University School of Medicine, Indianapolis, IN 46202, USA;
- Mayo Clinic Graduate School of Biomedical Sciences, Rochester, MN 55905, USA
| | - Luca Parodi
- Obstetrics and Gynecology Department, Istituto Clinico Sant’Anna, 25127 Brescia, Italy;
| | - Shannon M. Hawkins
- Department of Obstetrics and Gynecology, Indiana University School of Medicine, Indianapolis, IN 46202, USA;
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Brichant G, Laraki I, Henry L, Munaut C, Nisolle M. New Therapeutics in Endometriosis: A Review of Hormonal, Non-Hormonal, and Non-Coding RNA Treatments. Int J Mol Sci 2021; 22:10498. [PMID: 34638843 PMCID: PMC8508913 DOI: 10.3390/ijms221910498] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/23/2021] [Accepted: 09/23/2021] [Indexed: 12/14/2022] Open
Abstract
Endometriosis is defined as endometrial-like tissue outside the uterine cavity. It is a chronic inflammatory estrogen-dependent disease causing pain and infertility in about 10% of women of reproductive age. Treatment nowadays consists of medical and surgical therapies. Medical treatments are based on painkillers and hormonal treatments. To date, none of the medical treatments have been able to cure the disease and symptoms recur as soon as the medication is stopped. The development of new biomedical targets, aiming at the cellular and molecular mechanisms responsible for endometriosis, is needed. This article summarizes the most recent medications under investigation in endometriosis treatment with an emphasis on non-coding RNAs that are emerging as key players in several human diseases, including cancer and endometriosis.
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Affiliation(s)
- Geraldine Brichant
- Obstetrics and Gynecology Department, ULiege, 4000 Liège, Belgium; (I.L.); (L.H.); (M.N.)
| | - Ines Laraki
- Obstetrics and Gynecology Department, ULiege, 4000 Liège, Belgium; (I.L.); (L.H.); (M.N.)
| | - Laurie Henry
- Obstetrics and Gynecology Department, ULiege, 4000 Liège, Belgium; (I.L.); (L.H.); (M.N.)
| | - Carine Munaut
- Laboratory of Tumor and Development Biology, Giga-Cancer, ULiege, 4000 Liège, Belgium;
| | - Michelle Nisolle
- Obstetrics and Gynecology Department, ULiege, 4000 Liège, Belgium; (I.L.); (L.H.); (M.N.)
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Alsaadi M, Khan MY, Dalhat MH, Bahashwan S, Khan MU, Albar A, Almehdar H, Qadri I. Dysregulation of miRNAs in DLBCL: Causative Factor for Pathogenesis, Diagnosis and Prognosis. Diagnostics (Basel) 2021; 11:1739. [PMID: 34679437 PMCID: PMC8535125 DOI: 10.3390/diagnostics11101739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 09/10/2021] [Accepted: 09/17/2021] [Indexed: 11/16/2022] Open
Abstract
MicroRNA is a small non-coding RNA (sncRNA) involved in gene silencing and regulating post-transcriptional gene expression. miRNAs play an essential role in the pathogenesis of numerous diseases, including diabetes, cardiovascular diseases, viral diseases and cancer. Diffuse large B-cell lymphoma (DLBCL) is an aggressive non-Hodgkin's lymphoma (NHL), arising from different stages of B-cell differentiation whose pathogenesis involves miRNAs. Various viral and non-viral vectors are used as a delivery vehicle for introducing specific miRNA inside the cell. Adenoviruses are linear, double-stranded DNA viruses with 35 kb genome size and are extensively used in gene therapy. Meanwhile, Adeno-associated viruses accommodate up to 4.8 kb foreign genetic material and are favorable for transferring miRNA due to small size of miRNA. The genetic material is integrated into the DNA of the host cell by retroviruses so that only dividing cells are infected and stable expression of miRNA is achieved. Over the years, remarkable progress was made to understand DLBCL biology using advanced genomics and epigenomics technologies enabling oncologists to uncover multiple genetic mutations in DLBCL patients. These genetic mutations are involved in epigenetic modification, ability to escape immunosurveillance, impaired BCL6 and NF-κβ signaling pathways and blocking terminal differentiation. These pathways have since been identified and used as therapeutic targets for the treatment of DLBCL. Recently miRNAs were also identified to act either as oncogenes or tumor suppressors in DLBCL pathology by altering the expression levels of some of the known DLBCL related oncogenes. i.e., miR-155, miR-17-92 and miR-21 act as oncogenes by altering the expression levels of MYC, SHIP and FOXO1, respectively, conversely; miR-34a, mir-144 and miR-181a act as tumor suppressors by altering the expression levels of SIRT1, BCL6 and CARD11, respectively. Hundreds of miRNAs have already been identified as biomarkers in the prognosis and diagnosis of DLBCL because of their significant roles in DLBCL pathogenesis. In conclusion, miRNAs in addition to their role as biomarkers of prognosis and diagnosis could also serve as potential therapeutic targets for treating DLBCL.
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Affiliation(s)
- Mohammed Alsaadi
- Department of Biological Science, Faculty of Science, King AbdulAziz University, Jeddah 21589, Saudi Arabia; (M.A.); (M.Y.K.); (A.A.); (H.A.)
- Hematology Research Unit, King Fahad Medical Research Center, King AbdulAziz University, Jeddah 21589, Saudi Arabia;
| | - Muhammad Yasir Khan
- Department of Biological Science, Faculty of Science, King AbdulAziz University, Jeddah 21589, Saudi Arabia; (M.A.); (M.Y.K.); (A.A.); (H.A.)
- Vaccine and Immunotherapy Unit, King Fahad Medical Research Center, King AbdulAziz University, Jeddah 21589, Saudi Arabia
| | - Mahmood Hassan Dalhat
- Department of Biochemistry, Faculty of Science, King AbdulAziz University, Jeddah 21589, Saudi Arabia;
| | - Salem Bahashwan
- Hematology Research Unit, King Fahad Medical Research Center, King AbdulAziz University, Jeddah 21589, Saudi Arabia;
- Department of Hematology, Faculty of Medicine, King AbdulAziz University, Jeddah 21589, Saudi Arabia
- King AbdulAziz University Hospital, King AbdulAziz University, Jeddah 21589, Saudi Arabia
| | - Muhammad Uzair Khan
- Department of Health Sciences, City University of Science and Information Technology, Peshawar 25000, Pakistan;
| | - Abdulgader Albar
- Department of Biological Science, Faculty of Science, King AbdulAziz University, Jeddah 21589, Saudi Arabia; (M.A.); (M.Y.K.); (A.A.); (H.A.)
- Department of Microbiology, Faculty of Medicine, Jeddah University, Jeddah 23218, Saudi Arabia
| | - Hussein Almehdar
- Department of Biological Science, Faculty of Science, King AbdulAziz University, Jeddah 21589, Saudi Arabia; (M.A.); (M.Y.K.); (A.A.); (H.A.)
| | - Ishtiaq Qadri
- Department of Biological Science, Faculty of Science, King AbdulAziz University, Jeddah 21589, Saudi Arabia; (M.A.); (M.Y.K.); (A.A.); (H.A.)
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164
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Ameli-Mojarad M, Ameli-Mojarad M, Hadizadeh M, Young C, Babini H, Nazemalhosseini-Mojarad E, Bonab MA. The effective function of circular RNA in colorectal cancer. Cancer Cell Int 2021; 21:496. [PMID: 34535136 PMCID: PMC8447721 DOI: 10.1186/s12935-021-02196-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 09/03/2021] [Indexed: 01/04/2023] Open
Abstract
Colorectal cancer (CRC) is the 3rd most common type of cancer worldwide. Late detection plays role in one-third of annual mortality due to CRC. Therefore, it is essential to find a precise and optimal diagnostic and prognostic biomarker for the identification and treatment of colorectal tumorigenesis. Covalently closed, circular RNAs (circRNAs) are a class of non-coding RNAs, which can have the same function as microRNA (miRNA) sponges, as regulators of splicing and transcription, and as interactors with RNA-binding proteins (RBPs). Therefore, circRNAs have been investigated as specific targets for diagnostic and prognostic detection of CRC. These non-coding RNAs are also linked to metastasis, proliferation, differentiation, migration, angiogenesis, apoptosis, and drug resistance, illustrating the importance of understanding their involvement in the molecular mechanisms of development and progression of CRC. In this review, we present a detailed summary of recent findings relating to the dysregulation of circRNAs and their potential role in CRC.
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Affiliation(s)
| | - Melika Ameli-Mojarad
- Department of Biology, Faculty of Basic Science, Kharrazi University, Tehran, Iran
| | - Mahrooyeh Hadizadeh
- School of Medicine, University of Sunderland, City Campus, Chester Road, Sunderland, SR1 3SD UK
| | - Chris Young
- Institute of Health & Life Sciences, De Montfort University, Leicester, UK
| | - Hosna Babini
- Department of Cell & Molecular Biology, Faculty of Science, Tehran University of Medical Science, Tehran, Iran
| | - Ehsan Nazemalhosseini-Mojarad
- Gastroenterology and Liver Disease Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maziar Ashrafian Bonab
- School of Medicine, University of Sunderland, City Campus, Chester Road, Sunderland, SR1 3SD UK
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165
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Huang JG, Tang X, Wang JJ, Liu J, Chen P, Sun Y. A circular RNA, circUSP36, accelerates endothelial cell dysfunction in atherosclerosis by adsorbing miR-637 to enhance WNT4 expression. Bioengineered 2021; 12:6759-6770. [PMID: 34519627 PMCID: PMC8806706 DOI: 10.1080/21655979.2021.1964891] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Atherosclerosis is a fatal disorder that is fundamental to various cardiovascular diseases and severely threatens people’s health worldwide. Several studies have demonstrated the role of circular RNAs (circRNAs) in the pathogenesis of atherosclerosis. circUSP36 acts as a key modulator in the progression of atherosclerosis, but the molecular mechanism underlying this role is as yet unclear. This study aimed to elucidate the mechanism by which circUSP36 exerts its function in an in vitro cell model of endothelial cell dysfunction, which is one of pathological features of atherosclerosis. The circRNA traits of circUSP36 were confirmed, and we observed high expression of circUSP36 in endothelial cells exposed to oxidized low-density lipoprotein (ox-LDL). Functional assays revealed that overexpression of circUSP36 suppressed proliferation and migration of ox-LDL-treated endothelial cells. In terms of its mechanism, circUSP36 adsorbed miR-637 by acting as an miRNA sponge. Moreover, enhanced expression of miR-637 abated the impact of circUSP36 on ox-LDL-treated endothelial cell dysregulation. Subsequently, the targeting relationship between miR-637 and WNT4 was predicted using bioinformatics tools and was confirmed via luciferase reporter and RNA pull-down assays. Notably, depletion of WNT4 rescued circUSP36-mediated inhibition of endothelial cell proliferation and migration. In conclusion, circUSP36 regulated WNT4 to aggravate endothelial cell injury caused by ox-LDL by competitively binding to miR-637; this finding indicates circUSP36 to be a promising biomarker for the diagnosis and therapy of atherosclerosis.
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Affiliation(s)
- Jian-Guo Huang
- Department of Vascular Surgery, Linyi Central Hospital, Linyi, Shandong Province, China
| | - Xia Tang
- Department of Vascular Surgery, Linyi Central Hospital, Linyi, Shandong Province, China
| | - Jiang-Jie Wang
- Department of Vascular Surgery, Linyi Central Hospital, Linyi, Shandong Province, China
| | - Jia Liu
- Department of Vascular Surgery, Linyi Central Hospital, Linyi, Shandong Province, China
| | - Ping Chen
- Department of Vascular Surgery, Linyi Central Hospital, Linyi, Shandong Province, China
| | - Yan Sun
- Department of Mental Health, Yishui People's Hospital, Linyi, Shandong Province, China
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166
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Liu N, Jiang F, Chen Z. A Preliminary Study on the Pathogenesis of Colorectal Cancer by Constructing a Hsa-circRNA-0067835-miRNA-mRNA Regulatory Network. Onco Targets Ther 2021; 14:4645-4658. [PMID: 34511934 PMCID: PMC8418363 DOI: 10.2147/ott.s319300] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 08/19/2021] [Indexed: 12/24/2022] Open
Abstract
Background Increasing evidence shows that circular RNAs (circRNAs) play a key role in the development of colorectal cancer (CRC). An interesting candidate RNA in this context is hsa-circRNA-0067835 (circIFT80), but its network of actions is still unclear. Methods Big data mining technology was used to explore the downstream microRNAs (miRNA) and messenger RNAs (mRNA) of the circIFT80 network. A regulatory network, comprising circIFT80 and its corresponding miRNAs and mRNAs, was derived to preliminarily explore the potential mechanism of circIFT80 in CRC. Finally, the proposed regulatory network was experimentally verified at the cellular level. Results A total of 6 miRNAs were screened, of which hsa-miR-197-3p, hsa-miR-370-3p and hsa-miR-377-5p may be the most potential downstream miRNAs of hsa-circRNA-0067835 in CRC. A total of 74 up-regulated genes with opposite miRNA expression were selected for subsequent verification. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) databases revealed that the target genes occurred more frequently in cancer-related pathways. In addition, protein-protein interaction (PPI) analysis of the target genes revealed a set of involved genes from which the hubTop 10 genes were selected for further analysis. Moreover, circRNA-miRNA-hubTop 10 mRNA networks were constructed. According to this analysis, circIFT80 simultaneously regulates hsa-miR-197-3p, hsa-miR-370-3p, and hsa-miR-377-5p, among which hsa-miR-370-3p seems to be associated with further genes that may be relevant to CRC development. Therefore, the proposed circIFT80/hsa-miR-370-3p/WNT7B, SLC1A5, RCBTB1 and COL6A6 signal axes were subjected to experimental verification. It could be shown that circIFT80 was up-regulated in CRC tissues. The circIFT80 was able to inhibit apoptosis and promote proliferation, migration and invasion. Moreover, circIFT80 inhibited the expression of hsa-miR-370-3p and promoted the expression of COL6A6, RCBTB1, SLC1A5 and WNT7B in CRC cell lines. Dual luciferase reporter assays further validated that circIFT80 is able to bind to hsa-miR-370-3p which in turn targets WNT7B. Conclusion The circIFT80 may play a role in carcinogenesis through the new circIFT80/hsa-miR-370-3p/WNT7B signal axis. These findings may provide potential biomarkers and therapeutic targets for the treatment of CRC.
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Affiliation(s)
- Ning Liu
- Department of Gastrointestinal Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, 570311, People's Republic of China
| | - Fan Jiang
- Department of the Center of Gerontology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, 570311, People's Republic of China
| | - Zhiju Chen
- Department of Gastrointestinal Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, 570311, People's Republic of China
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167
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Liu Z, Li M. Circular RNAs and their role in renal cell carcinoma: a current perspective. Cancer Cell Int 2021; 21:469. [PMID: 34488780 PMCID: PMC8422676 DOI: 10.1186/s12935-021-02181-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 08/27/2021] [Indexed: 02/07/2023] Open
Abstract
Circular RNAs (circRNAs) are a new class of long non-coding RNAs, that results from a special type of alternative splicing referred to as back-splicing. They are widely distributed in eukaryotic cells and demonstrate tissue-specific expression patterns in humans. CircRNAs actively participate in various important biological activities like gene transcription, pre-mRNA splicing, translation, sponging miRNA and proteins, etc. With such diverse biological functions, circRNAs not only play a crucial role in normal human physiology, as well as in multiple diseases, including cancer. In this review, we summarized our current understanding of circRNAs and their role in renal cell carcinoma (RCC), the most common cancer of kidneys. Studies have shown that the expression level of several circRNAs are considerably varied in RCC samples and RCC cell lines suggesting the potential role of these circRNAs in RCC progression. Several circRNAs promote RCC development and progression mostly via the miRNA/target gene axis making them ideal candidates for novel anti-cancer therapy. Apart from these, there are a few circRNAs that are significantly downregulated in RCC and overexpression of these circRNAs leads to suppression of RCC growth. Differential expression patterns and novel functions of circRNAs in RCC suggest that circRNAs can be utilized as potential biomarkers and therapeutic targets for RCC therapy. However, our current understanding of the role of circRNA in RCC is still in its infancy and much comprehensive research is needed to achieve clinical translation of circRNAs as biomarkers and therapeutic targets in developing effective treatment options for RCC.
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Affiliation(s)
- Zhongyuan Liu
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, 110004, People's Republic of China
| | - Ming Li
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, 110004, People's Republic of China.
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Sharma AR, Bhattacharya M, Bhakta S, Saha A, Lee SS, Chakraborty C. Recent research progress on circular RNAs: Biogenesis, properties, functions, and therapeutic potential. MOLECULAR THERAPY. NUCLEIC ACIDS 2021; 25:355-371. [PMID: 34484862 PMCID: PMC8399087 DOI: 10.1016/j.omtn.2021.05.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Circular RNAs (circRNAs), an emerging family member of RNAs, have gained importance in research due to their new functional roles in cellular physiology and disease progression. circRNAs are usually available in a wide range of cells and have shown tissue-specific expression as well as developmental specific expression. circRNAs are characterized by structural stability, conservation, and high abundance in the cell. In this review, we discuss the different models of biogenesis. The properties of circRNAs such as localization, structure and conserved pattern, stability, and expression specificity are also been illustrated. Furthermore, we discuss the biological functions of circRNAs such as microRNA (miRNA) sponging, cell cycle regulation, cell-to-cell communication, transcription regulation, translational regulation, disease diagnosis, and therapeutic potential. Finally, we discuss the recent research progress and future perspective of circRNAs. This review provides an understanding of potential diagnostic markers and the therapeutic potential of circRNAs, which are emerging daily.
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Affiliation(s)
- Ashish Ranjan Sharma
- Institute for Skeletal Aging & Orthopedic Surgery, Hallym University-Chuncheon Sacred Heart Hospital, Chuncheon-si 24252, Gangwon-do, Republic of Korea
| | - Manojit Bhattacharya
- Department of Zoology, Fakir Mohan University, Vyasa Vihar, Balasore 756020, Odisha, India
| | - Swarnav Bhakta
- Department of Biotechnology, School of Life Science and Biotechnology, Adamas University, Barasat-Barrackpore Road, Jagannathpur, Kolkata, West Bengal 700126, India
| | - Abinit Saha
- Department of Biotechnology, School of Life Science and Biotechnology, Adamas University, Barasat-Barrackpore Road, Jagannathpur, Kolkata, West Bengal 700126, India
| | - Sang-Soo Lee
- Institute for Skeletal Aging & Orthopedic Surgery, Hallym University-Chuncheon Sacred Heart Hospital, Chuncheon-si 24252, Gangwon-do, Republic of Korea
| | - Chiranjib Chakraborty
- Department of Biotechnology, School of Life Science and Biotechnology, Adamas University, Barasat-Barrackpore Road, Jagannathpur, Kolkata, West Bengal 700126, India
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Cheng C, Zhang H, Dai Z, Zheng J. Circular RNA circVRK1 suppresses the proliferation, migration and invasion of osteosarcoma cells by regulating zinc finger protein ZNF652 expression via microRNA miR-337-3p. Bioengineered 2021; 12:5411-5427. [PMID: 34424826 PMCID: PMC8806728 DOI: 10.1080/21655979.2021.1965695] [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] [Indexed: 12/24/2022] Open
Abstract
Circular RNA is an innovative kind of endogenous non-coding RNA, which could take part in tumorigenesis. Nonetheless, the potential molecular mechanisms of circVRK1 in the progression of osteosarcoma remain unresolved. In the current study, we initially investigated circVRK1 levels in osteosarcoma clinical samples and cell lines by qRT-PCR analysis and northern blot assay. RNase R treatments, RNA stability assay and nucleoplasmic separation assay were conducted to identify the characteristics of circVRK1. We adopted CCK-8, colony formation, wound-healing, and transwell assays to assess the biological effects of circVRK1 on the proliferation, migration, and invasiveness of osteosarcoma cells in vitro. We then constructed a xenograft model in nude mice to confirm the suppressive role of circVRK1 in vivo. Moreover, dual-luciferase reporter, RNA immunoprecipitation, and RNA pull-down assays were utilized to elucidate the underlying molecular mechanisms mediated by circVRK1. We demonstrated that circVRK1 was a stable circular transcript localized in the cytoplasm of osteosarcoma cells, and the down-regulation of circVRK1 in osteosarcoma tissues was related to poor outcome of patients. Meanwhile, over-expressed circVRK1 obviously restrained the growth, migration, and invasion of osteosarcoma in vitro and in vivo. Mechanistically, circVRK1 was assumed to be a microRNA sponge for miR-337-3p, and ZNF652 was the downstream gene of miR-337-3p. CircVRK1 overexpression or miR-337-3p knockdown accelerated ZNF652 expression, and up-regulated miR-337-3p efficiently abolished the promotion of ZNF652 induced by circVRK1. Moreover, rescue experiments have proved that circVRK1 inhibits the progression of osteosarcoma by modulating the miR-337-3p/ZNF652 axis. Therefore, we conclude that circVRK1 promotes ZNF652 expression by sponging miR-337-3p. CircVRK1 serves as a molecule sponge for miR-337-3p and mediates the ceRNA network to promote the expression of ZNF652, thus suppresses osteosarcoma proliferation, migration and invasion.
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Affiliation(s)
- Cheng Cheng
- Department of Orthopedics, Henan Provincial People's Hospital, Zhengzhou University, Zhengzhou, China
| | - Haoping Zhang
- Department of Mini-invasive Spinal Surgery, Third Hospital of Henan Province, Zhengzhou, China
| | - Zhipeng Dai
- Department of Orthopedics, Henan Provincial People's Hospital, Zhengzhou University, Zhengzhou, China
| | - Jia Zheng
- Department of Orthopedics, Henan Provincial People's Hospital, Zhengzhou University, Zhengzhou, China
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170
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Yang K, Zhang J, Bao C. Exosomal circEIF3K from cancer-associated fibroblast promotes colorectal cancer (CRC) progression via miR-214/PD-L1 axis. BMC Cancer 2021; 21:933. [PMID: 34412616 PMCID: PMC8375187 DOI: 10.1186/s12885-021-08669-9] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 08/05/2021] [Indexed: 12/20/2022] Open
Abstract
Background Tumor microenvironment (e.g., cancer-associated fibroblast) plays a key role in cancer tumorigenesis and metastasis. However, the detailed mechanism of whether hypoxia promotes CRC progression via tumor microenvironment remains unclear. Methods In this study, circEIF3K exosome was examined by NanoSight Tracking Analysis and RT-qPCR. We used cell colony formation assay, transwell assay and tube formation assay to determine proliferation, invasion and metastasis of HCT116 or SW620 cells. Xenograft tumor assay was employed to show in vivo tumor growth of HCT116 cells. Results We found that hypoxia could induce secretion of circEIF3K exosome. Conditioned medium (CM) and exosome from circEIF3K knockdown CAF significantly attenuated proliferation, invasion and tube formation of HCT116 or SW620 cells, which could be reverted by miR-214 under hypoxia treatment. Besides, we observed that circEIF3K knockdown evidently impaired tumor growth in mice. TCGA dataset analysis showed that low expression of circEIF3K was observed in normal tissues and associated with prolonged survival time. Finally, PD-L1 was confirmed as important target for miR-214 in CRC. Conclusion In conclusion, our study reveals that a novel axis circEIF3K/miR-214/PD-L1 mediates hypoxia-induced CRC progression via CAF, providing the rationale for developing new targeted therapeutics to treat CRC.
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Affiliation(s)
- Kaihua Yang
- Department of Radiotherapy, Affiliated Hospital of Jiangnan University, Wuxi, China.
| | - Jie Zhang
- Medical School, Nantong University, Nantong, China
| | - Chuanqing Bao
- Department of Gastrointestinal Surgery, Affiliated Hospital of Jiangnan University, No. 1000 Hefeng Road, Wuxi, 214122, China.
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Liu Y, Li C, Liu H, Wang J. Circ_0001821 knockdown suppresses growth, metastasis, and TAX resistance of non-small-cell lung cancer cells by regulating the miR-526b-5p/GRK5 axis. Pharmacol Res Perspect 2021; 9:e00812. [PMID: 34219377 PMCID: PMC8256366 DOI: 10.1002/prp2.812] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 05/10/2021] [Indexed: 12/24/2022] Open
Abstract
Non-small-cell lung cancer (NSCLC) remains a huge obstacle to human health. Certain circular RNAs endow with crucial regulatory roles in NSCLC progression. Here, we investigated the functional effects of circ_0001821 on cellular behaviors of NSCLC cells and explored the possible mechanism. The expression of circ_0001821, microRNA (miR)-526b-5p, and G protein-coupled receptor kinase 5 (GRK5) was determined by quantitative real-time polymerase chain reaction or Western blot assay. Clonogenicity in NSCLC cells was detected via colony formation assay. Cell migration and invasion were monitored by Transwell assay. Cell sensitivity to paclitaxel (TAX) evaluated by Cell Counting Kit-8 assay. Cell apoptosis was assessed by flow cytometry, caspase-3 activity, and caspase-9 activity. The targeted relationship between miR-526b-5p and circ_0001821 or GRK5 was confirmed by dual-luciferase reporter or RNA pull-down assay. Moreover, the role of circ_0001821 in vivo was examined by xenograft model assay. The results presented that the expression of circ_0001821 and GRK5 was increased, while miR-526b-5p expression was decreased in NSCLC tissues and cells. Circ_0001821 knockdown reduced colony formation ability and metastasis ability but enhanced TAX sensibility and apoptosis of NSCLC cells, which was attenuated by miR-526b-5p inhibition or GRK5 overexpression. Circ_0001821 targeted miR-526b-5p, and miR-526b-5p targeted GRK5. Circ_0001821 could upregulate GRK5 expression by sponging miR-526b-5p. Depletion of circ_0001821 also blocked tumor growth in vivo. In conclusion, the depletion of circ_0001821 inhibited NSCLC progression, at least in part, by modulating the miR-526b-5p/GRK5 axis.
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Affiliation(s)
- Ying Liu
- Department of Laboratory MedicineJingmen No. 2 People's HospitalJingmenChina
| | - Changchao Li
- Department of Laboratory MedicineJingmen No. 2 People's HospitalJingmenChina
| | - Huiqun Liu
- Department of Laboratory MedicineJingmen No. 2 People's HospitalJingmenChina
| | - Jing Wang
- Department of Laboratory MedicineJingmen No. 2 People's HospitalJingmenChina
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172
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Wang X, Zhang Z, Liang H, Chen R, Huang Y. Circ_0025908 regulates cell vitality and proliferation via miR-137/HIPK2 axis of rheumatic arthritis. J Orthop Surg Res 2021; 16:472. [PMID: 34330307 PMCID: PMC8323297 DOI: 10.1186/s13018-021-02615-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 07/13/2021] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Rheumatic arthritis (RA) is an autoimmune disease with bad effects. Recent researches have shown that circular RNAs (circRNAs) could affect the progress of RA, but the mechanism still indistinct. In this work, we explored the roles of circ_0025908 in RA. METHODS The levels of circ_0025908, microRNA-137 (miR-137), and mRNA of homeodomain-interacting protein kinase 2 (HIPK2) were detected by quantitative real-time reverse transcription-polymerase chain reaction (qRT-PCR) in RA tissues. Meanwhile, the level of HIPK2 was quantified by Western blot analysis. Besides, the cell functions were examined by CCK8 assay, EdU assay, flow cytometry assay, ELISA, and Western blot. Furthermore, the interplay between miR-137 and circ_0025908 or HIPK2 was detected by dual-luciferase reporter assay. RESULTS The levels of circ_0025908 and HIPK2 were upregulated, and the miR-137 level was decreased in RA tissues in contrast to that in normal tissues. For functional analysis, circ_0025908 deficiency inhibited cell vitality, cell mitotic cycle, cell proliferation, and immunoreaction in RA cells, whereas promoted cell apoptosis. Moreover, miR-137 was confirmed to repress the progression of RA cells by suppressing HIPK2. In mechanism, circ_0025908 acted as a miR-137 sponge to regulate the level of HIPK2. CONCLUSION Circ_0025908 facilitates the development of RA through increasing HIPK2 expression by regulating miR-137, which also offered an underlying targeted therapy for RA treatment.
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Affiliation(s)
- Xiaofeng Wang
- Department of Traumatic Orthopedics, Institute of Orthopedics, Huizhou Central People's Hospital, No. 41, North E'ling Road, Huizhou, 516000, Guangdong Province, China
| | - Zhiwen Zhang
- Department of Traumatic Orthopedics, Institute of Orthopedics, Huizhou Central People's Hospital, No. 41, North E'ling Road, Huizhou, 516000, Guangdong Province, China
| | - Haofeng Liang
- Department of Traumatic Orthopedics, Institute of Orthopedics, Huizhou Central People's Hospital, No. 41, North E'ling Road, Huizhou, 516000, Guangdong Province, China
| | - Ruixiong Chen
- Department of Traumatic Orthopedics, Institute of Orthopedics, Huizhou Central People's Hospital, No. 41, North E'ling Road, Huizhou, 516000, Guangdong Province, China
| | - Yuliang Huang
- Department of Traumatic Orthopedics, Institute of Orthopedics, Huizhou Central People's Hospital, No. 41, North E'ling Road, Huizhou, 516000, Guangdong Province, China.
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173
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Zhang T, Zhang L, Han D, Tursun K, Lu X. Circular RNA hsa_Circ_101141 as a Competing Endogenous RNA Facilitates Tumorigenesis of Hepatocellular Carcinoma by Regulating miR-1297/ROCK1 Pathway. Cell Transplant 2021; 29:963689720948016. [PMID: 32787581 PMCID: PMC7563807 DOI: 10.1177/0963689720948016] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
As a novel class of noncoding RNAs, circular RNAs (circRNAs) have been recently
reported to be involved in cell development and function. However, the
functional role of circRNAs in hepatocellular carcinoma (HCC) remains unclear.
In the present study, we found that the expression of human circ_101141 was
upregulated in HCC tissues and cells. In addition, downregulation of circ_101141
dramatically inhibited cell proliferation, migration, and invasion in HCC cells.
In addition, by using the bioinformatics tools, the potential target of
circ_101141 was predicted. Mechanistic investigations indicated that circ_101141
acted as a miR-1297 “sponge”; meanwhile, Rho-associated, coiled-coil-containing
protein kinase 1 (ROCK1) was a direct target of miR-1297. Further experiments
demonstrated that circ_101141 contributed to the progression of HCC by acting as
competing endogenous RNA (ceRNA) of miR-1297 to regulate ROCK1 expression.
Furthermore, knockdown of circ_101141 attenuated HCC tumorigenesis in vivo.
Taken together, these findings indicated that circRNA circ_101141 acted as a
ceRNA to facilitate tumorigenesis of HCC by regulating miR-1297/ROCK1
pathway.
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Affiliation(s)
- Tao Zhang
- Department of Infectious Disease Center, 159427The First Affiliated Hospital of Xinjiang Medical University, Urumqi City, Xinjiang Uygur Autonomous Region, China
| | - Lijuan Zhang
- Department of Infectious Disease Center, 159427The First Affiliated Hospital of Xinjiang Medical University, Urumqi City, Xinjiang Uygur Autonomous Region, China
| | - Dan Han
- Department of Infectious Disease Center, 159427The First Affiliated Hospital of Xinjiang Medical University, Urumqi City, Xinjiang Uygur Autonomous Region, China
| | - Kebinur Tursun
- Department of Infectious Disease Center, 159427The First Affiliated Hospital of Xinjiang Medical University, Urumqi City, Xinjiang Uygur Autonomous Region, China
| | - Xiaobo Lu
- Department of Infectious Disease Center, 159427The First Affiliated Hospital of Xinjiang Medical University, Urumqi City, Xinjiang Uygur Autonomous Region, China
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174
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Shu L, Zhou C, Yuan X, Zhang J, Deng L. MSCFS: inferring circRNA functional similarity based on multiple data sources. BMC Bioinformatics 2021; 22:371. [PMID: 34271851 PMCID: PMC8285884 DOI: 10.1186/s12859-021-04287-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 07/06/2021] [Indexed: 12/13/2022] Open
Abstract
Background More and more evidence shows that circRNA plays an important role in various biological processes and human health. Therefore, inferring the circRNA’s potential functions and obtaining circRNA functional similarity has become more and more significant. However, there is no effective approach to explore the functional similarity of circRNAs. Methods In this paper, we propose a new approach, called MSCFS, to calculate the functional similarity of circRNA by integrating multiple data sources. We combine circRNA-disease association, circRNA-gene-Gene Ontology association, and circRNA sequence information to explore the functional similarity of circRNA. Firstly, we employ different learning representation methods from three data sources to establish three circRNA functional similarity networks. Then we integrate the three networks to obtain the final circRNA functional similarity. Results We utilize circRNA–miRNA association similarity and circRNA co-expression similarity to evaluate the performance of MSCFS. The results show a positive correlation with miRNA association (\documentclass[12pt]{minimal}
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\begin{document}$$R=0.213$$\end{document}R=0.213) and circRNA co-expression similarity (\documentclass[12pt]{minimal}
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\begin{document}$$R=0.8991$$\end{document}R=0.8991). Finally, we construct a circRNA functional similarity network and perform case analysis. The result shows our method can be applied to infer new potential functions of circRNA and other associations. Conclusions MSCFS combines multiple data sources related to circRNA functions. Correlation analysis and case analyses prove that MSCFS is a useful method to explore circRNA functional similarity.
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Affiliation(s)
- Liang Shu
- School of Computer Science and Engineering, Central South University, Lushangnan Road, Changsha, China
| | - Cheng Zhou
- School of Computer Science and Engineering, Central South University, Lushangnan Road, Changsha, China
| | - Xinxu Yuan
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, VA, 23284, USA
| | - Jingpu Zhang
- School of Computer and Data Science, Henan University of Urban Construction, Longxiang Road, Pingdingshan, 467000, China
| | - Lei Deng
- School of Computer Science and Engineering, Central South University, Lushangnan Road, Changsha, China.
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175
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Zhang M, Bian Z. The Emerging Role of Circular RNAs in Alzheimer's Disease and Parkinson's Disease. Front Aging Neurosci 2021; 13:691512. [PMID: 34322012 PMCID: PMC8311738 DOI: 10.3389/fnagi.2021.691512] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 06/22/2021] [Indexed: 12/27/2022] Open
Abstract
Alzheimer’s disease (AD) and Parkinson’s disease (PD) are two neurodegenerative diseases (NDDs) commonly found in elderly patients that are difficult to diagnose and lack effective treatment. Currently, the available diagnostic methods for these two NDDs do not meet clinical diagnostic expectations. Circular RNAs (circRNAs) are a diverse group of endogenous non-coding RNAs (ncRNAs) found in eukaryotic cells. Emerging studies suggest that altered expression of circRNAs is involved in the pathological processes of NDDs. CircRNAs could also prove to be promising biomarkers for the early diagnosis of NDDs such as AD and PD. Growing evidence has improved our knowledge of the roles of circRNAs in NDDs, which may lead to new therapeutic approaches that target transcription for preventing neurodegeneration. In this review, we describe the formation mechanisms and functions of circRNAs as well as methods of validation. We also discuss the emerging role of circRNAs in the pathophysiology of AD and PD and their potential value as biomarkers and therapeutic targets for AD and PD in the future.
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Affiliation(s)
- Meng Zhang
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Zhigang Bian
- Department of Otolaryngology Head and Neck Surgery, Shengjing Hospital of China Medical University, Shenyang, China
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176
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Li Q, Li N, Liu H, Du Y, He H, Zhang L, Liu Y. Estrogen-decreased hsa_circ_0001649 promotes stromal cell invasion in endometriosis. Reproduction 2021; 160:511-519. [PMID: 32698139 PMCID: PMC7497355 DOI: 10.1530/rep-19-0540] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 07/06/2020] [Indexed: 01/25/2023]
Abstract
Endometriosis (EMs) is an estrogen (E2)-dependent inflammatory disorder. Although EMs is considered a benign disease, it presents with malignant characteristics, such as migration and invasion. An increasing number of studies have shown that aberrantly expressed circular RNAs (circRNAs) play an essential role in disease development and progression. However, the mechanisms by which circRNAs exert their pathological effects in EMs remain unclear. Hsa_circ_0001649, a novel cancer-associated circRNA, has been previously reported to be downregulated in several cancer types and related to cell migration and invasion. In the present study, real-time PCR (qRT-PCR) was carried out to measure hsa_circ_0001649 levels in human tissues, human primary endometrial stromal cells (ESCs) and a human endometrial stromal cell line (ThESCs). Matrix metalloproteinase 9 (MMP9) levels in ESCs and ThESCs were assessed by qRT-PCR and Western blotting, and the migration and invasion capacities of ThESCs were evaluated by transwell assay. As a result, hsa_circ_0001649 expression was significantly decreased in ectopic and eutopic endometrial samples compared with that in normal endometrial samples. E2 decreased hsa_circ_0001649 expression but increased MMP9 expression in ESCs and ThESCs. Furthermore, ThESCs were more invasive under E2 stimulation. However, these effects disappeared when ICI or hsa_circ_0001649 transfection was used. Collectively, our findings reveal that decreased hsa_circ_0001649 expression plays a role in E2-increased MMP9 expression through E2 receptors (ERs), which have critical functions in EMs.
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Affiliation(s)
- Qi Li
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Na Li
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hengwei Liu
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Yu Du
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Haitang He
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ling Zhang
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yi Liu
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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177
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Fu X, Niu T, Yang T, Li X. CircMAPK1 promotes the proliferation and migration of vascular smooth muscle cells through miR-22-3p/ methyl-CpG binding protein 2 axis. Nutr Metab Cardiovasc Dis 2021; 31:2189-2198. [PMID: 34059381 DOI: 10.1016/j.numecd.2021.04.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 02/19/2021] [Accepted: 04/11/2021] [Indexed: 11/15/2022]
Abstract
BACKGROUND AND AIMS Atherosclerosis is a chronic inflammatory disease. The proliferation and migration of vascular smooth muscle cells (VSMCs) contribute to intimal hyperplasia. CircRNAs are class of endogenous RNA and implicated in the various biological processes. However, the role of circRNAs in atherosclerosis remains largely unknown. METHODS AND RESULTS Mice models of atherosclerosis were established using APOE-/- mice fed with high-fat diet. High-throughput sequencing was performed to profile the expression of circRNAs in atherosclerosis. A total of 1289 circRNAs were identified. Six circRNAs were up-regulated and 12 circRNAs were down-regulated in the atherosclerotic plaque tissues. Then we focused on circMAPK1, which showed a high level in atherosclerosis. Silencing circMAPK1 suppressed the proliferation and migration of VSMCs. Further study showed that circMAPK1 bound with miR-22-3p. CircMAPK1 silencing increased the level of miR-22-3p and suppressed the level of MECP2, a known target of miR-22-3p. Interestingly, suppression of miR-22-3p rescued the effect of circMAPK1 silencing on the proliferation and migration of VSMCs. CONCLUSION CircMPAK1 promoted the proliferation and migration of VSMCs through miR-22-3p/MECP2 axis. Our study revealed the role of circMAPK1 in atherosclerosis and shed lights on the treatment of atherosclerosis.
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MESH Headings
- Animals
- Aortic Diseases/genetics
- Aortic Diseases/metabolism
- Aortic Diseases/pathology
- Atherosclerosis/genetics
- Atherosclerosis/metabolism
- Atherosclerosis/pathology
- Cell Movement
- Cell Proliferation
- Cells, Cultured
- Disease Models, Animal
- Gene Expression Regulation
- Methyl-CpG-Binding Protein 2/genetics
- Methyl-CpG-Binding Protein 2/metabolism
- Mice, Inbred C57BL
- Mice, Knockout, ApoE
- MicroRNAs/genetics
- MicroRNAs/metabolism
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- RNA, Circular/genetics
- RNA, Circular/metabolism
- Transcriptome
- Mice
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Affiliation(s)
- Xi Fu
- Department of Cardiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, 110004, PR China
| | - Tiesheng Niu
- Department of Cardiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, 110004, PR China
| | - Tiangui Yang
- Department of Cardiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, 110004, PR China
| | - Xiaodong Li
- Department of Cardiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, 110004, PR China.
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178
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Xie G, Chen H, Sun Y, Gu G, Lin Z, Wang W, Li J. Predicting circRNA-Disease Associations Based on Deep Matrix Factorization with Multi-source Fusion. Interdiscip Sci 2021; 13:582-594. [PMID: 34185304 DOI: 10.1007/s12539-021-00455-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 06/18/2021] [Accepted: 06/20/2021] [Indexed: 12/14/2022]
Abstract
Recently, circRNAs with covalently closed loops have been discovered to play important parts in the progression of diseases. Nevertheless, the study of circRNA-disease associations is highly dependent on biological experiments, which are time-consuming and expensive. Hence, a computational approach to predict circRNA-disease associations is urgently needed. In this paper, we presented an approach that is based on deep matrix factorization with multi-source fusion (DMFMSF). In DMFMSF, several useful circRNA and disease similarities were selected and then combined by similarity kernel fusion. Then, linear and non-linear characteristics were mined using singular value decomposition (SVD) and deep matrix factorization to infer potential circRNA-disease associations. Performance of the proposed DMFMSF on two benchmark datasets are rigorously validated by leave-one-out cross-validation(LOOCV) and fivefold cross-validation (5-fold CV). The experimental results showed that DMFMSF is superior over several existing computational approaches. In addition, five important diseases, hepatocellular carcinoma, breast cancer, acute myeloid leukemia, colorectal cancer, and coronary artery disease were applied in case studies. The results suggest that DMFMSF can be used as an accurate and efficient computational tool for predicting circRNA-disease associations.
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Affiliation(s)
- Guobo Xie
- School of Computers, Guangdong University of Technology, Guangzhou, 510006, Guangdong, China
| | - Hui Chen
- School of Computers, Guangdong University of Technology, Guangzhou, 510006, Guangdong, China
| | - Yuping Sun
- School of Computers, Guangdong University of Technology, Guangzhou, 510006, Guangdong, China.
| | - Guosheng Gu
- School of Computers, Guangdong University of Technology, Guangzhou, 510006, Guangdong, China
| | - Zhiyi Lin
- School of Computers, Guangdong University of Technology, Guangzhou, 510006, Guangdong, China
| | - Weiming Wang
- School of Computers, Guangdong University of Technology, Guangzhou, 510006, Guangdong, China.,School of Science and Technology, The Open University of Hong Kong, Hong Kong, 999077, China
| | - Jianming Li
- School of Computers, Guangdong University of Technology, Guangzhou, 510006, Guangdong, China
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179
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Pan F, Zhang D, Li N, Liu M. Circular RNA circFAT1(e2) Promotes Colorectal Cancer Tumorigenesis via the miR-30e-5p/ITGA6 Axis. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2021; 2021:9980459. [PMID: 34257702 PMCID: PMC8257361 DOI: 10.1155/2021/9980459] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/25/2021] [Accepted: 06/06/2021] [Indexed: 01/22/2023]
Abstract
circRNAs (circular RNAs) are a family of noncoding RNAs and have diverse physiological and pathological functions. However, the functions and mechanisms of circRNAs in the development and progression of colorectal cancer (CRC) remain largely unknown. Here, we aimed to explore the functions and roles of circFAT1(e2) in CRC. qRT-PCR revealed that circFAT1(e2) in CRC tumor tissues was upregulated compared with that in adjacent normal tissues and was also upregulated in CRC cell lines. Small interfering RNAs (siRNAs) against circFAT1(e2) were used to decrease the expression of circFAT1(e2) in HCT116 and RKO cells in vitro. The roles of circFAT1(e2) in CRC cell metastasis and proliferation were then determined by transwell and CCK-8 assays. The results showed that circFAT1(e2) silencing markedly suppressed CRC growth. Moreover, we identified circFAT1(e2) as a promoter of CRC metastasis. Knockdown of circFAT1(e2) evidently reduced HCT116 and RKO cell migration and invasion. Furthermore, the regulatory relationship between circFAT1(e2) and its target miRNAs was verified by a luciferase reporter assay. We demonstrated that circFAT1(e2) could sponge miR-30e-5p, which regulated the expression level of integrin α6 (ITGA6), the downstream target gene of miR-30e-5p. Rescue assays demonstrated that knockdown of miR-30e-5p enhanced CRC proliferation and migration via ITGA6. Taken together, our results reveal the novel oncogenic roles of circFAT1(e2) in CRC through the miR-30e-5p/ITGA6 axis.
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Affiliation(s)
- Fei Pan
- Department of General Practice, Minhang Hospital, Fudan University, 170 Xinsong Road, 201199 Shanghai, China
| | - Dongqing Zhang
- Department of General Practice, Minhang Hospital, Fudan University, 170 Xinsong Road, 201199 Shanghai, China
| | - Na Li
- Department of General Practice, Minhang Hospital, Fudan University, 170 Xinsong Road, 201199 Shanghai, China
| | - Mei Liu
- Department of General Practice, Minhang Hospital, Fudan University, 170 Xinsong Road, 201199 Shanghai, China
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180
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Sun J, Yin A, Zhang W, Lv J, Liang Y, Li H, Li Y, Li X. CircUBAP2 Inhibits Proliferation and Metastasis of Clear Cell Renal Cell Carcinoma via Targeting miR-148a-3p/FOXK2 Pathway. Cell Transplant 2021; 29:963689720925751. [PMID: 32425115 PMCID: PMC7563813 DOI: 10.1177/0963689720925751] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Clear cell renal cell carcinoma (ccRCC) is the prominent histological subtype of renal cell carcinoma (RCC) with high incidence of local recurrence and distant metastasis. It has been documented that circular ribonucleic acids (circRNAs) play crucial roles in the development of cancers; however, study on exploring the role of circRNAs in ccRCC still remains limited. In the present study, we aimed to evaluate the biological function of a novel circRNA UBAP2 (circUBAP2) in ccRCC and the underlying mechanism. Our results showed that circUBAP2 expression was significantly down-regulated in ccRCC tissues and cell lines. Overexpression of circUBAP2 significantly inhibited the proliferation, migration, and invasion of ccRCC cells. MiR-148a-3p was a target miRNA of circUBAP2 in ccRCC cells, and its expression levels in ccRCC tissues and cell lines were negatively correlated with circUBAP2 levels. Moreover, miR-148a-3p reversed the inhibitory effects of circUBAP2 on cell proliferation, migration, and invasion in ccRCC cells. Additionally, forkhead box K2 (FOXK2) was found to be a target gene of miR-148a-3p and regulated by miR-148a-3p in ccRCC cells. Furthermore, knockdown of FOXK2 reversed the inhibitory effects of miR-148a-3p inhibitor on ccRCC cells. In conclusion, these findings indicated that circUBAP2 functioned as a novel tumor suppressor in ccRCC through regulating the miR-148a-3p/FOXK2 axis. Therefore, circUBAP2 might serve as a potential therapeutic target for the treatment of ccRCC.
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Affiliation(s)
- Jiping Sun
- Department of Nephrology, the First Affiliated Hospital of Medical College, Xi'an Jiaotong University, China.,Both the authors contributed equally to this article
| | - Aiping Yin
- Department of Nephrology, the First Affiliated Hospital of Medical College, Xi'an Jiaotong University, China.,Both the authors contributed equally to this article
| | - Wenjing Zhang
- Department of Nephrology, the First Affiliated Hospital of Medical College, Xi'an Jiaotong University, China
| | - Jia Lv
- Department of Nephrology, the First Affiliated Hospital of Medical College, Xi'an Jiaotong University, China
| | - Yu Liang
- Department of Nephrology, the First Affiliated Hospital of Medical College, Xi'an Jiaotong University, China
| | - Huixian Li
- Department of Nephrology, the First Affiliated Hospital of Medical College, Xi'an Jiaotong University, China
| | - Yan Li
- Department of Nephrology, the First Affiliated Hospital of Medical College, Xi'an Jiaotong University, China
| | - Xudong Li
- Department of Urology, the First Affiliated Hospital of Medical College, Xi'an Jiaotong University, China
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181
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Ivanov YD, Malsagova KA, Popov VP, Kupriyanov IN, Pleshakova TO, Galiullin RA, Ziborov VS, Dolgoborodov AY, Petrov OF, Miakonkikh AV, Rudenko KV, Glukhov AV, Smirnov AY, Usachev DY, Gadzhieva OA, Bashiryan BA, Shimansky VN, Enikeev DV, Potoldykova NV, Archakov AI. Micro-Raman Characterization of Structural Features of High-k Stack Layer of SOI Nanowire Chip, Designed to Detect Circular RNA Associated with the Development of Glioma. Molecules 2021; 26:molecules26123715. [PMID: 34207029 PMCID: PMC8234461 DOI: 10.3390/molecules26123715] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/08/2021] [Accepted: 06/14/2021] [Indexed: 02/08/2023] Open
Abstract
The application of micro-Raman spectroscopy was used for characterization of structural features of the high-k stack (h-k) layer of "silicon-on-insulator" (SOI) nanowire (NW) chip (h-k-SOI-NW chip), including Al2O3 and HfO2 in various combinations after heat treatment from 425 to 1000 °C. After that, the NW structures h-k-SOI-NW chip was created using gas plasma etching optical lithography. The stability of the signals from the monocrine phase of HfO2 was shown. Significant differences were found in the elastic stresses of the silicon layers for very thick (>200 nm) Al2O3 layers. In the UV spectra of SOI layers of a silicon substrate with HfO2, shoulders in the Raman spectrum were observed at 480-490 cm-1 of single-phonon scattering. The h-k-SOI-NW chip created in this way has been used for the detection of DNA-oligonucleotide sequences (oDNA), that became a synthetic analog of circular RNA-circ-SHKBP1 associated with the development of glioma at a concentration of 1.1 × 10-16 M. The possibility of using such h-k-SOI NW chips for the detection of circ-SHKBP1 in blood plasma of patients diagnosed with neoplasm of uncertain nature of the brain and central nervous system was shown.
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Affiliation(s)
- Yuri D. Ivanov
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, 119121 Moscow, Russia; (Y.D.I.); (T.O.P.); (R.A.G.); (V.S.Z.); (A.I.A.)
| | - Kristina A. Malsagova
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, 119121 Moscow, Russia; (Y.D.I.); (T.O.P.); (R.A.G.); (V.S.Z.); (A.I.A.)
- Correspondence: ; Tel.: +7-(499)-246-37-61
| | - Vladimir P. Popov
- Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia;
| | - Igor N. Kupriyanov
- Laboratory of Experimental Mineralogy and Crystallogenesis, Sobolev Institute of Geology and Mineralogy, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia;
| | - Tatyana O. Pleshakova
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, 119121 Moscow, Russia; (Y.D.I.); (T.O.P.); (R.A.G.); (V.S.Z.); (A.I.A.)
| | - Rafael A. Galiullin
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, 119121 Moscow, Russia; (Y.D.I.); (T.O.P.); (R.A.G.); (V.S.Z.); (A.I.A.)
| | - Vadim S. Ziborov
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, 119121 Moscow, Russia; (Y.D.I.); (T.O.P.); (R.A.G.); (V.S.Z.); (A.I.A.)
- Joint Institute for High Temperatures of Russian Academy of Sciences, 125412 Moscow, Russia; (A.Y.D.); (O.F.P.)
| | - Alexander Yu. Dolgoborodov
- Joint Institute for High Temperatures of Russian Academy of Sciences, 125412 Moscow, Russia; (A.Y.D.); (O.F.P.)
| | - Oleg F. Petrov
- Joint Institute for High Temperatures of Russian Academy of Sciences, 125412 Moscow, Russia; (A.Y.D.); (O.F.P.)
| | - Andrey V. Miakonkikh
- K. A. Valiev Institute of Physics and Technology of the Russian Academy of Sciences, 117218 Moscow, Russia; (A.V.M.); (K.V.R.)
| | - Konstantin V. Rudenko
- K. A. Valiev Institute of Physics and Technology of the Russian Academy of Sciences, 117218 Moscow, Russia; (A.V.M.); (K.V.R.)
| | - Alexander V. Glukhov
- JSC Novosibirsk Plant of Semiconductor Devices with OKB, 630082 Novosibirsk, Russia;
| | | | - Dmitry Yu. Usachev
- Federal State Autonomous Institution “N. N. Burdenko National Medical Research Center of Neurosurgery” of the Ministry of Health of the Russian Federation, 125047 Moscow, Russia; (D.Y.U.); (O.A.G.); (B.A.B.); (V.N.S.)
| | - Olga A. Gadzhieva
- Federal State Autonomous Institution “N. N. Burdenko National Medical Research Center of Neurosurgery” of the Ministry of Health of the Russian Federation, 125047 Moscow, Russia; (D.Y.U.); (O.A.G.); (B.A.B.); (V.N.S.)
| | - Boris A. Bashiryan
- Federal State Autonomous Institution “N. N. Burdenko National Medical Research Center of Neurosurgery” of the Ministry of Health of the Russian Federation, 125047 Moscow, Russia; (D.Y.U.); (O.A.G.); (B.A.B.); (V.N.S.)
| | - Vadim N. Shimansky
- Federal State Autonomous Institution “N. N. Burdenko National Medical Research Center of Neurosurgery” of the Ministry of Health of the Russian Federation, 125047 Moscow, Russia; (D.Y.U.); (O.A.G.); (B.A.B.); (V.N.S.)
| | - Dmitry V. Enikeev
- Institute for Urology and Reproductive Health, Sechenov University, 119992 Moscow, Russia; (D.V.E.); (N.V.P.)
| | - Natalia V. Potoldykova
- Institute for Urology and Reproductive Health, Sechenov University, 119992 Moscow, Russia; (D.V.E.); (N.V.P.)
| | - Alexander I. Archakov
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, 119121 Moscow, Russia; (Y.D.I.); (T.O.P.); (R.A.G.); (V.S.Z.); (A.I.A.)
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Radu MR, Prădatu A, Duică F, Micu R, Creţoiu SM, Suciu N, Creţoiu D, Varlas VN, Rădoi VE. Ovarian Cancer: Biomarkers and Targeted Therapy. Biomedicines 2021; 9:693. [PMID: 34207450 PMCID: PMC8235073 DOI: 10.3390/biomedicines9060693] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/04/2021] [Accepted: 06/16/2021] [Indexed: 12/25/2022] Open
Abstract
Ovarian cancer is one of the most common causes of death in women as survival is highly dependent on the stage of the disease. Ovarian cancer is typically diagnosed in the late stage due to the fact that in the early phases is mostly asymptomatic. Genomic instability is one of the hallmarks of ovarian cancer. While ovarian cancer is stratified into different clinical subtypes, there still exists extensive genetic and progressive diversity within each subtype. Early detection of the disorder is one of the most important steps that facilitate a favorable prognosis and a good response to medical therapy for the patients. In targeted therapies, individual patients are treated by agents targeting the changes in tumor cells that help them grow, divide and spread. Currently, in gynecological malignancies, potential therapeutic targets include tumor-intrinsic signaling pathways, angiogenesis, homologous-recombination deficiency, hormone receptors, and immunologic factors. Ovarian cancer is usually diagnosed in the final stages, partially due to the absence of an effective screening strategy, although, over the times, numerous biomarkers have been studied and used to assess the status, progression, and efficacy of the drug therapy in this type of disorder.
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Affiliation(s)
- Mihaela Raluca Radu
- Fetal Medicine Excellence Research Center, Alessandrescu-Rusescu National Institute for Mother and Child Health, 020395 Bucharest, Romania; (M.R.R.); (A.P.); (F.D.); (N.S.)
| | - Alina Prădatu
- Fetal Medicine Excellence Research Center, Alessandrescu-Rusescu National Institute for Mother and Child Health, 020395 Bucharest, Romania; (M.R.R.); (A.P.); (F.D.); (N.S.)
| | - Florentina Duică
- Fetal Medicine Excellence Research Center, Alessandrescu-Rusescu National Institute for Mother and Child Health, 020395 Bucharest, Romania; (M.R.R.); (A.P.); (F.D.); (N.S.)
| | - Romeo Micu
- Department of Mother and Child, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania;
| | - Sanda Maria Creţoiu
- Department of Cell and Molecular Biology and Histology, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania;
| | - Nicolae Suciu
- Fetal Medicine Excellence Research Center, Alessandrescu-Rusescu National Institute for Mother and Child Health, 020395 Bucharest, Romania; (M.R.R.); (A.P.); (F.D.); (N.S.)
- Division of Obstetrics, Gynecology and Neonatology, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Department of Obstetrics and Gynecology, Alessandrescu-Rusescu National Institute for Mother and Child Health, Polizu Clinical Hospital, 020395 Bucharest, Romania;
| | - Dragoş Creţoiu
- Fetal Medicine Excellence Research Center, Alessandrescu-Rusescu National Institute for Mother and Child Health, 020395 Bucharest, Romania; (M.R.R.); (A.P.); (F.D.); (N.S.)
- Department of Cell and Molecular Biology and Histology, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania;
| | - Valentin Nicolae Varlas
- Department of Obstetrics and Gynecology, Filantropia Clinical Hospital, 01171 Bucharest, Romania
- Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy, 030167 Bucharest, Romania
| | - Viorica Elena Rădoi
- Department of Obstetrics and Gynecology, Alessandrescu-Rusescu National Institute for Mother and Child Health, Polizu Clinical Hospital, 020395 Bucharest, Romania;
- Department of Medical Genetics, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
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Circ_0072995 Promotes Ovarian Cancer Progression Through Regulating miR-122-5p/SLC1A5 Axis. Biochem Genet 2021; 60:153-172. [PMID: 34132956 DOI: 10.1007/s10528-021-10092-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 06/02/2021] [Indexed: 10/21/2022]
Abstract
Ovarian cancer is a common cancer affecting women with high morbidity and mortality globally. Circular RNAs (circRNAs) have been found play vital roles in multifarious cancers, including OC. This study aims to explore the biological role and underlying mechanism of circ_0072995 in OC progression. Circ_0072995 was upregulated in OC tissues and cells in a stable structure. Functional experiments indicated that circ_0072995 knockdown suppressed cell proliferation, migration, invasion and accelerated cell apoptosis of OC cells. Mechanistically, miR-122-5p was a direct target of circ_0072995, and its knockdown reversed the effects of circ_0072995 silence on inhibition of OC cell progression. Meanwhile, SLC1A5 was a downstream target gene of miR-122-5p, and miR-122-5p overexpression inhibited the progression of OC cells by targeting SLC1A5. Moreover, circ_0072995 positively regulated SLC1A5 expression via sponging miR-122-5p. Circ_0072995 could play oncogenic role in tumorigenesis and malignant development of OC by regulating miR-122-5p/SLC1A5 axis, providing a novel approach for OC treatment.
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184
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Zhang S, Lu Y, Jiang HY, Cheng ZM, Wei ZJ, Wei YH, Liu T, Xia BJ, Zhao XY, Huang Y, Zou X, Liu R, Zhou S. CircC16orf62 promotes hepatocellular carcinoma progression through the miR-138-5p/PTK2/AKT axis. Cell Death Dis 2021; 12:597. [PMID: 34108451 PMCID: PMC8190090 DOI: 10.1038/s41419-021-03866-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 05/14/2021] [Accepted: 05/17/2021] [Indexed: 02/08/2023]
Abstract
Circular RNA (circRNAs) functions vital in the pathogenesis and progression of hepatocellular carcinoma (HCC). However, the expressions and functions of certain circRNAs on metastasis and proliferation of that cancer is still unclear. Bioinformation analysis and qRT-PCR indicated that CircC16orf62 was prominent upregulated in HCC of which the expression level was positively associated to cancer’s malignant progression. Gain or loss-of-function studies indicated that the reduction of CircC16orf62 expression promotes the proliferation, invasion, and glycolysis of HCC in vitro and in vivo. The bioinformatic analysis found that miR-138-5p and PTK2 were the downstream target of CircC16or62. Then, the FISH(Fluorescence immunoin situ hybridization) and cell nucleoplasmic separation determined that CircC16orf62 located in the cell cytoplasm. Plasmid vectors or siRNAs were used to change the expression of CircC16orf62, miR-138-5p, and PTK2 in PC cell lines. CircC16orf62 functioned as a molecular sponge for miR-138-5p, and a competitive endogenous RNA for PTK2, promoting AKT/mTOR pathway activation. Our observations lead us to conclude that CircC16orf62 functions as an oncogene in HCC progression, behaving as a competitive endogenous RNA for miR-138-5p binding, thus activating the AKT/mTOR pathway. In conclusion, CircC16orf62 is an oncogene through the miR-138-5p/PTK2/Akt axis in HCC cells, indicating CircC16orf62 can be a therapeutic target with potentiality for liver cancer and a predictive marker for people with HCC.
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Affiliation(s)
- Shuai Zhang
- Department of Interventional Radiology, The Affiliated Cancer Hospital of Guizhou Medical University, Guiyang, 550000, P.R. China.,Department of Interventional Radiology, the Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, P.R. China.,Department of Cancer Research Laboratory, The Affiliated Cancer Hospital of Guizhou Medical University, Guiyang, 550000, P.R. China
| | - Yuan Lu
- Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, 550004, P.R. China
| | - Hong-Yu Jiang
- Department of Cancer Research Laboratory, The Affiliated Cancer Hospital of Guizhou Medical University, Guiyang, 550000, P.R. China
| | - Zhi-Mei Cheng
- Department of Interventional Radiology, the Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, P.R. China
| | - Zi-Jing Wei
- Department of Interventional Radiology, The Affiliated Cancer Hospital of Guizhou Medical University, Guiyang, 550000, P.R. China
| | - Yun-Hao Wei
- Department of Interventional Radiology, The Affiliated Cancer Hospital of Guizhou Medical University, Guiyang, 550000, P.R. China
| | - Ting Liu
- Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, 550004, P.R. China
| | - Bai-Juan Xia
- School of Basic Medical Sciences, Guizhou Medical University, Guiyang, 550004, P.R. China
| | - Xu-Ya Zhao
- Department of Interventional Radiology, The Affiliated Cancer Hospital of Guizhou Medical University, Guiyang, 550000, P.R. China
| | - Yu Huang
- Department of Interventional Radiology, The Affiliated Cancer Hospital of Guizhou Medical University, Guiyang, 550000, P.R. China
| | - Xun Zou
- Department of Radiology, the Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, P.R. China
| | - Rong Liu
- Department of Interventional Radiology, First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, 550000, P.R. China
| | - Shi Zhou
- Department of Interventional Radiology, the Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, P.R. China.
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185
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CPSF4 regulates circRNA formation and microRNA mediated gene silencing in hepatocellular carcinoma. Oncogene 2021; 40:4338-4351. [PMID: 34103682 DOI: 10.1038/s41388-021-01867-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 05/13/2021] [Accepted: 05/25/2021] [Indexed: 11/08/2022]
Abstract
CircRNAs play essential roles in various physiological processes and involves in many diseases, in particular cancer. Global downregulation of circRNA expression has been observed in hepatocellular carcinoma (HCC) in many studies. Previous studies revealed that the pre-mRNA 3' end processing complex participates in circRNA cyclization and plays an important role in HCC tumorigenesis. Therefore, we explored the role of CPSF4, for 3' end formation and cleavage, in circRNA formation. Clinical research has shown that CPSF4 expression is upregulated in HCC and that high expression of CPSF4 is associated with poor prognosis in HCC patients. Mechanistic studies have demonstrated that CPSF4 reduces the levels of circRNAs, which possess a polyadenylation signal sequence and this decrease in circRNAs reduces the accumulation of miRNA and disrupts the miRNA-mediated gene silencing in HCC. Experiments in cell culture and xenograft mouse models showed that CPSF4 promotes the proliferation of HCC cells and enhances tumorigenicity. Moreover, CPSF4 antagonizes the tumor suppressor effect of its downstream circRNA in HCC. In summary, CPSF4 acts as an oncogene in HCC through circRNA inhibition and disruption of miRNA-mediated gene silencing.
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186
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Zuo J, Chen C, Zhang X, Wu J, Li C, Huang S, He P, Wa Q, Zhang W. Circ_HECW2 regulates LPS-induced apoptosis of chondrocytes via miR-93 methylation. IMMUNITY INFLAMMATION AND DISEASE 2021; 9:943-949. [PMID: 34076365 PMCID: PMC8342212 DOI: 10.1002/iid3.453] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 04/28/2021] [Accepted: 04/30/2021] [Indexed: 01/10/2023]
Abstract
INTRODUCTION Circ_HECW2 plays a key role in lipopolysaccharide (LPS)-induced signal transduction, which is critical in osteoarthritis (OA). Thus, we analyzed the role of Circ_HECW2 in osteoarthritis. METHODS The expression of Circ_HECW2 and miR-93 was examined using reverse-transcription polymerase chain reaction. Cell apoptosis was evaluated using Annexin V-FITC Apoptosis Detection Kit. RESULTS Circ_HECW2 and miR-93 were inversely correlated, with Circ_HECW2 upregulated and miR-93 downregulated in OA and LPS-induced chondrocytes. Circ_HECW2 overexpression inhibited miR-93 expression and increased methylation of miR-93 coding gene. Cell apoptosis analysis showed that Circ_HECW2 overexpression increased LPS-induced chondrocyte apoptosis, while MiR-93 overexpression reversed the effects of Circ_HECW2 on chondrocyte apoptosis. CONCLUSION In summary, our data revealed that the Circ_HECW2 is highly expressed in OA and might inhibit miR-93 expression through methylation to affect LPS-induced chondrocyte apoptosis.
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Affiliation(s)
- Jianwei Zuo
- Department of Sports Medicine, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Chen Chen
- Department of Anesthesiology, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Xintao Zhang
- Department of Sports Medicine, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Jiangyi Wu
- Department of Sports Medicine, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Canfeng Li
- Department of Sports Medicine, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Shuai Huang
- Department of Orthopedic Surgery, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Peiheng He
- Department of Joint Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Qingde Wa
- Department of Orthopedic Surgery, The Second Affiliated Hospital of Zunyi Medical University, Zun Yi, Guizhou, China
| | - Wentao Zhang
- Department of Sports Medicine, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
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187
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Qu F, Wang L, Wang C, Yu L, Zhao K, Zhong H. Circular RNA circ_0006168 enhances Taxol resistance in esophageal squamous cell carcinoma by regulating miR-194-5p/JMJD1C axis. Cancer Cell Int 2021; 21:273. [PMID: 34022910 PMCID: PMC8141117 DOI: 10.1186/s12935-021-01984-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 05/13/2021] [Indexed: 12/24/2022] Open
Abstract
Background Chemoresistance is one of the major obstacles for cancer therapy in the clinic. Circular RNAs (circRNAs) are involved in the pathogenesis of esophageal squamous cell carcinoma (ESCC) and chemoresistance. This study aimed to explore the role and molecular mechanism of circ_0006168 in Taxol resistance of ESCC. Methods The expression levels of circ_0006168, microRNA-194-5p (miR-194-5p) and jumonji domain containing 1C (JMJD1C) were measured by quantitative real-time polymerase chain reaction (qRT-PCR) or western blot. The half-inhibition concentration (IC50) value of Taxol was evaluated by Cell Counting Kit-8 (CCK-8) assay. Cell proliferation was evaluated by CCK-8 and colony formation assays. Cell migration and invasion were detected by transwell assay. Cell apoptosis was determined by flow cytometry. The interaction between miR-194-5p and circ_0006168 or JMJD1C was predicted by bioinformatics analysis (Circinteractome and TargetScan) and verified by dual-luciferase reporter and RNA Immunoprecipitation (RIP) and RNA pull-down assays. The mice xenograft model was established to investigate the roles of circ_0006168 in vivo. Results Circ_0006168 and JMJD1C were upregulated and miR-194-5p was downregulated in ESCC tissues, ESCC cells, and Taxol-resistant cells. Functionally, knockdown of circ_0006168 or JMJD1C increased Taxol sensitivity of ESCC in vitro via inhibiting cell proliferation, migration and invasion, and promoting apoptosis. Moreover, circ_0006168 could directly bind to miR-194-5p and JMJD1C was verified as a direct target of miR-194-5p. Mechanically, circ_0006168 was a sponge of miR-194-5p to regulate JMJD1C expression in ESCC cells. Furthermore, JMJD1C overexpression reversed the promotive effect of circ_0006168 knockdown on Taxol sensitivity. Besides, circ_0006168 silence suppressed tumor growth in vivo. Conclusion Circ_0006168 facilitated Taxol resistance in ESCC by regulating miR-194-5p/JMJD1C axis, providing a promising therapeutic target for ESCC chemotherapy. Supplementary Information The online version contains supplementary material available at 10.1186/s12935-021-01984-y.
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Affiliation(s)
- Fanyong Qu
- Department of Radiation Oncology, Yantai Affiliated Hospital of Binzhou Medical University, No. 717, Jinbu Street, Mu ping District, Yantai, Shandong, 264100, China.
| | - Lina Wang
- Department of Oncology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong, 264100, China
| | - Caiyan Wang
- Department of Gastroenterology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong, 264100, China
| | - Lingxia Yu
- Department of Oncology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong, 264100, China
| | - Kaikai Zhao
- Department of Radiation Oncology, Yantai Affiliated Hospital of Binzhou Medical University, No. 717, Jinbu Street, Mu ping District, Yantai, Shandong, 264100, China
| | - Hao Zhong
- Department of Radiation Oncology, Yantai Affiliated Hospital of Binzhou Medical University, No. 717, Jinbu Street, Mu ping District, Yantai, Shandong, 264100, China
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188
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Bu T, Qiao Z, Wang W, Yang X, Zhou J, Chen L, Yang J, Xu J, Ji Y, Wang Y, Zhang W, Yang Y, Qiu X, Yu Y. Diagnostic Biomarker Hsa_circ_0126218 and Functioning Prediction in Peripheral Blood Monocular Cells of Female Patients With Major Depressive Disorder. Front Cell Dev Biol 2021; 9:651803. [PMID: 34095115 PMCID: PMC8174117 DOI: 10.3389/fcell.2021.651803] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 03/22/2021] [Indexed: 12/22/2022] Open
Abstract
Introduction Although major depressive diroder (MDD) has brought huge burden and challenges to society globally, effective and accurate diagnoses and treatments remain inadequate. The pathogenesis that for women are more likely to suffer from depression than men needs to be excavated as well. The function of circRNAs in pathological process of depression has not been widely investigated. This study aims to explore potential diagnostic biomarker circRNA of female patients with MDD and to investigate its role in pathogenesis. Methods First, an expression profile of circRNAs in the peripheral blood monocular cells of MDD patients and healthy peripherals were established based on high-throughput sequencing analysis. In addition, the top 10 differentially expressed circRNAs were quantified by quantitative real-time PCR to explore diagnostic biomarkers. To further investigate the function of biomarkers in the pathogenesis of MDD, bioinformatics analysis on downstream target genes of the biomarkers was carried out. Results There is a mass of dysregulated circRNAs in PBMCs between female MDD patients and healthy controls. Among the top 10 differentially expressed circRNAs, hsa_circ_0126218 is more feasible as a diagnostic biomarker. The expression level of hsa_circ_0126218 displayed upregulation in patients with MDD and the area under the operating characteristic curve of hsa_circ_0126218 was 0.801 (95% CI 0.7226–0.8791, p < 0.0001). To explain the competing endogenous RNA role of hsa_circ_0126218 in the pathogenesis of female MDD, a hsa_circ_0126218-miRNA-mRNA network was established. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses stated that some of the enriched pathways downstream of hsa_circ_0126218 are closely related to MDD. Moreover, we established a protein-protein network to further screen out the hub genes (PIK3CA, PTEN, MAPK1, CDC42, Lyn, YES1, EPHB2, SMAD2, STAT1, and ILK). The function of hsa_circ_0126218 was refined by constructing a verified circRNA-predicted miRNA-hub gene subnetwork. Conclusion hsa_circ_0126218 can be considered as a new female MDD biomarker, and the pathogenesis of female MDD by the downstream regulation of hsa_circ_0126218 has been predicted. These findings may help further improve the early detection, effective diagnosis, convenient monitoring of complications, precise treatment, and timely recurrence prevention of depression.
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Affiliation(s)
- Tianyi Bu
- Psychology and Health Management Center, Harbin Medical University, Harbin, China
| | - Zhengxue Qiao
- Psychology and Health Management Center, Harbin Medical University, Harbin, China
| | - Wenbo Wang
- Psychology and Health Management Center, Harbin Medical University, Harbin, China
| | - Xiuxian Yang
- Psychology and Health Management Center, Harbin Medical University, Harbin, China
| | - Jiawei Zhou
- Psychology and Health Management Center, Harbin Medical University, Harbin, China
| | - Lu Chen
- Department of Endocrinology, Peking Union Medical College Hospital, Beijing, China
| | - Jiarun Yang
- Psychology and Health Management Center, Harbin Medical University, Harbin, China
| | - Jia Xu
- Psychotherapy Department, The First Psychiatric Hospital of Harbin, Harbin, China
| | - Yanping Ji
- Department of Nursing, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yini Wang
- Psychology and Health Management Center, Harbin Medical University, Harbin, China
| | - Wenxin Zhang
- Medical Department, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yanjie Yang
- Psychology and Health Management Center, Harbin Medical University, Harbin, China
| | - Xiaohui Qiu
- Psychology and Health Management Center, Harbin Medical University, Harbin, China
| | - Yunmiao Yu
- Psychology and Health Management Center, Harbin Medical University, Harbin, China
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Wang W, Huang C, Luo P, Yao J, Li J, Wang W, Liu F. Circular RNA circWDR27 Promotes Papillary Thyroid Cancer Progression by Regulating miR-215-5p/TRIM44 Axis. Onco Targets Ther 2021; 14:3281-3293. [PMID: 34040392 PMCID: PMC8141407 DOI: 10.2147/ott.s290270] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 12/31/2020] [Indexed: 12/13/2022] Open
Abstract
Purpose This study was to explore the biological roles and underlying mechanism of circRNA WD repeat domain 27 (circWDR27). Methods The expression of circWDR27, microRNA-215-5p (miR-215-5p) and tripartite motif containing 44 (TRIM44) were measured by quantitative real-time polymerase chain reaction (qRT-PCR). 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and colony formation assays were employed to detect cell proliferation. Flow cytometry was used to determine cell apoptosis and cell cycle distribution. Cell migration and invasion abilities were examined by wound healing and transwell assays. The protein levels of matrix metalloproteinase 2 (MMP2), MMP9 and TRIM44 were analyzed by Western blot assay. The relationship between miR-215-5p and circWDR27 or TRIM44 was predicted by bioinformatics tools and confirmed using dual-luciferase reporter assay. Mouse xenograft model was established to examine the role of circWDR27 in vivo. Results CircWDR27 and TRIM44 were highly expressed while miR-215-5p was lowly expressed in PTC tissues and cells. Knockdown of circWDR27 suppressed cell proliferation and metastasis and induced cell cycle arrest and apoptosis in PTC cells. Moreover, miR-215-5p was a direct target of circWDR27, and its inhibition reversed the suppressive effect of circWDR27 knockdown on PTC cell progression. In addition, miR-215-5p directly targeted TRIM44, and miR-215-5p exerted its anti-cancer role in PTC cells by targeting TRIM44. Furthermore, circWDR27 positively regulated TRIM44 expression by sponging miR-215-5p. Importantly, knockdown of circWDR27 suppressed tumor growth in vivo by upregulating miR-215-5p and downregulating TRIM44. Conclusion CircWDR27 accelerates PTC progression via regulating miR-215-5p/TRIM44 axis, providing a potential therapeutic target for PTC.
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Affiliation(s)
- Weilan Wang
- Department of General Surgery, Changxing People's Hospital, The Second Affiliated Hospital of Zhejiang University School of Medical Changxing Campus, Changxing, Zhejiang, People's Republic of China
| | - Chengmin Huang
- Department of General Surgery, Changxing People's Hospital, The Second Affiliated Hospital of Zhejiang University School of Medical Changxing Campus, Changxing, Zhejiang, People's Republic of China
| | - Peng Luo
- Department of Medical Research, Shanghai Topgen Biomedical Technology Co., Ltd., Shanghai, People's Republic of China
| | - Jiang Yao
- Department of General Surgery, Changxing People's Hospital, The Second Affiliated Hospital of Zhejiang University School of Medical Changxing Campus, Changxing, Zhejiang, People's Republic of China
| | - Jie Li
- Department of General Surgery, Changxing People's Hospital, The Second Affiliated Hospital of Zhejiang University School of Medical Changxing Campus, Changxing, Zhejiang, People's Republic of China
| | - Wenxia Wang
- Department of General Surgery, Changxing People's Hospital, The Second Affiliated Hospital of Zhejiang University School of Medical Changxing Campus, Changxing, Zhejiang, People's Republic of China
| | - Fengqin Liu
- Department of Ultrasound, Changxing People's Hospital, The Second Affiliated Hospital of Zhejiang University School of Medical Changxing Campus, Changxing, Zhejiang, People's Republic of China
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190
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Bu X, Chen Z, Zhang A, Zhou X, Zhang X, Yuan H, Zhang Y, Yin C, Yan Y. Circular RNA circAFF2 accelerates gastric cancer development by activating miR-6894-5p and regulating ANTXR 1 expression. Clin Res Hepatol Gastroenterol 2021; 45:101671. [PMID: 33722777 DOI: 10.1016/j.clinre.2021.101671] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 12/22/2020] [Accepted: 02/23/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Circular RNAs (circRNAs) contain a new class of non-coding RNAs that play an important role in adjusting biological function and gene expression. But the function of circRNAs in gastric cancer remains unclear. In the present research, we explored the functions of circular RNA AFF2(circAFF2, hsa_circ_0001947) in gastric cancer cells and an animal model of gastric cancer. METHODS The expression of circAFF2, microRNA-6894-5p (miR-6894-5p), and Anthrax toxin receptor 1 (ANTXR 1) were determined by quantitative reverse transcription polymerase chain reaction (qRT-PCR). Cell counting kit 8 (CCK-8) and transwell assays were used to analyze the knockdown effects of circAFF2, miR-6894-5p, and overexpression of ANTXR 1 on cell proliferation, migration, and invasion abilities. Binding interactions between, circAFF2 and miR-6894-5p and between, miR-6894-5p and ANTXR 1 were detected by Dual-luciferase reporter assays. Levels of protein expression were analyzed by Western blotting. Tumor models were established by subcutaneous injection of tumor cells in nude mice. RESULT The result showed that circAFF2 expression was significantly increased in gastric cancer cell lines and tissues. The knockdown of circAFF2 dramatically suppressed the cell migration, invasion and proliferation of gastric cancer cells. In vivo studies showed that knockdown of circAFF2 delayed tumor growth. Furthermore, we revealed that circAFF2 functioned as a sponge to absorb miR-6984-5p and elevated the expression of ANTXR 1. CONCLUSION CircAFF2 acts as an oncogene in gastric cancer and exerts its effects via miR-6894-5p/ANTXR 1 signaling.
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Affiliation(s)
- Xuefeng Bu
- Department of General Surgery, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China
| | - Zhengwei Chen
- Department of General Surgery, Nanjing Lishui District People's Hospital, Nanjing, Jiangsu 211200, China; School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Anwei Zhang
- Department of General Surgery, Kunshan Hospital, Affiliated to Jiangsu University, Kunshan, Jiangsu 215300, China
| | - Xiaodong Zhou
- Department of General Surgery, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China
| | - Xuanfeng Zhang
- Department of General surgery, Xuzhou Central Hospital, Xuzhou, Jiangsu 221000, China
| | - Haitao Yuan
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Yao Zhang
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Chaoyun Yin
- Department of Vascular surgery, the Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China
| | - Yulan Yan
- Department of Respiratory medicine, the Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China.
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191
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Dolati S, Shakouri SK, Dolatkhah N, Yousefi M, Jadidi-Niaragh F, Sanaie S. The role of exosomal non-coding RNAs in aging-related diseases. Biofactors 2021; 47:292-310. [PMID: 33621363 DOI: 10.1002/biof.1715] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 01/25/2021] [Indexed: 12/17/2022]
Abstract
Aging is a biological process caused by the accumulation of senescent cells with a permanent proliferative arrest. To the influence of aging on human life expectancy, there is essential for new biomarkers which possibly will assistance in recognizing age-associated pathologies. Exosomes, which are cell-secreted nanovesicles, make available a new biomarker detection and therapeutic approach for the transfer of different molecules with high capacity. Recently, non-coding RNAs (ncRNA) which are contained in exosomes have developed as important molecules regulating the complexity of aging and relevant human diseases. The discovery of ncRNA provided perceptions into an innovative regulatory platform that could interfere with cellular senescence. The non-coding transcriptome includes a different of RNA species, spanning from short ncRNAs (<200 nucleotides) to long ncRNAs, that are >200 bp long. Upgraded evidence displays that targeting ncRNAs possibly will influence senescence pathways. In this article, we will address ncRNAs that participated in age-related and cellular senescence diseases. Growing conception of ncRNAs in the aging process possibly will be responsible for new understandings into the improvement of age-related diseases and elongated life span.
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Affiliation(s)
- Sanam Dolati
- Physical Medicine and Rehabilitation Research Center, Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Seyed Kazem Shakouri
- Physical Medicine and Rehabilitation Research Center, Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran
- Neurosciences Research Center, Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Neda Dolatkhah
- Physical Medicine and Rehabilitation Research Center, Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehdi Yousefi
- Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farhad Jadidi-Niaragh
- Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sarvin Sanaie
- Neurosciences Research Center, Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran
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Zhang Z, He J, Wang B. Circular RNA circ_HECTD1 regulates cell injury after cerebral infarction by miR-27a-3p/FSTL1 axis. Cell Cycle 2021; 20:914-926. [PMID: 33843447 DOI: 10.1080/15384101.2021.1909885] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Cerebral infarction is a common cerebrovascular disease caused by neural cell injury, with high mortality worldwide. Circular RNAs HECT domain E3 ubiquitin-protein ligase 1 (circ_HECTD1) has been reported to be related to the oxygen-glucose deprivation/reperfusion (OGD/R)-caused neuronal damage in cerebral ischemia. This study is designed to explore the role and mechanism of circ_HECTD1 in OGD/R-induced cell injury in cerebral ischemia. Circ_HECTD1, microRNA-27a-3p (miR-27a-3p), and Follistatin-like 1 (FSTL1) level were detected by real-time quantitative polymerase chain reaction (RT-qPCR). The localization of circ_HECTD1 was analyzed by subcellular fractionation assay. Cell proliferative ability and apoptosis were assessed by 5-ethynyl-2'-deoxyuridine (EdU), 3-(4, 5-dimethyl-2-thiazolyl)-2, 5-diphenyl-2-H-tetrazolium bromide (MTT), and flow cytometry assays. The protein levels of proliferating cell nuclear antigen (PCNA), B-cell lymphoma-2 (Bcl-2), Bcl-2 related X protein (Bax), Cleaved poly-ADP-ribose polymerase (PARP), and FSTL1 were examined by western blot assay. The binding relationship between miR-27a-3p and circ_HECTD1 or FSTL1 was predicted by starbase 3.0 then verified by a dual-luciferase reporter assay. Circ_HECTD1 and FSTL1 were highly expressed, and miR-27a-3p was decreased in OGD/R-treated HT22 cells. Moreover, circ_HECTD1 knockdown could boost cell proliferative ability and repress apoptosis in OGD/R-triggered HT22 cells in vitro. Mechanical analysis discovered that circ_HECTD1 could regulate FSTL1 expression by sponging miR-27a-3p. Circ_HECTD1 deficiency could mitigate OGD/R-induced HT22 cell damage by modulating the miR-27a-3p/FSTL1 axis, providing a promising therapeutic target for cerebral infarction treatment.
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Affiliation(s)
- Zhenduo Zhang
- Department of Encephalopathy Third Ward, The First Affiliated Hospital of Henan University of CM, Zhengzhou, Henan, China
| | - Jinbo He
- Department of ICU, The First Affiliated Hospital of Henan University of CM, Zhengzhou, Henan, China
| | - Baoliang Wang
- Department of Encephalopathy Third Ward, The First Affiliated Hospital of Henan University of CM, Zhengzhou, Henan, China
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193
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Zheng Y, Hu J, Li Y, Hao R, Qi Y. Clinicopathological and prognostic significance of circRNAs in lung cancer: A systematic review and meta-analysis. Medicine (Baltimore) 2021; 100:e25415. [PMID: 33832139 PMCID: PMC8036086 DOI: 10.1097/md.0000000000025415] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 03/10/2021] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Circular RNAs (circRNAs) regulate multiple pathways during lung cancer pathogenesis. Apart from functional significance, many circRNAs have been shown to be associated with clinicopathological characteristics and predict lung cancer prognosis. Our aim is to summarize the expanding knowledge of clinical roles of circRNAs in lung cancer. METHODS A thorough search of literature was conducted to identify articles about the correlation between circRNA expression and its prognostic and clinicopathological values. Biological mechanisms were summarized. RESULTS This study included 35 original articles and 32 circRNAs with prognostic roles for lung cancer. Increased expression of 25 circRNAs and decreased expression of 7 circRNAs predicted poor prognosis. For non-small cell lung cancer, changes of circRNAs were correlated with tumor size, lymph node metastasis, distant metastasis, tumor node metastasis (TNM) stage, and differentiation, indicating the major function of circRNAs is to promote lung cancer invasion and migration. Particularly, meta-analysis of ciRS-7, hsa_circ_0020123, hsa_circ_0067934 showed increase of the 3 circRNAs was associated with positive lymph node metastasis. Increase of ciRS-7 and hsa_circ_0067934 was also related with advanced TNM stage. The biological effects depend on the general function of circRNA as microRNA sponge. CONCLUSIONS CircRNAs have the potential to function as prognostic markers and are associated with lung cancer progression and metastasis.
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Affiliation(s)
- Yuxuan Zheng
- School of Nursing, Hebei Medical University, Shijiazhuang, Hebei
- Department of Respiratory Medicine, First Hospital of Jilin University, Changchun, Jilin, China
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, Louisville, KY
- Morning Star Academic Cooperation, Shanghai
| | - Jie Hu
- Department of Science and Technology, Hebei Medical University
| | - Yishuai Li
- Department of Thoracic Surgery, Hebei Provincial Chest Hospital
| | - Ran Hao
- School of Nursing, Hebei Medical University, Shijiazhuang, Hebei
- Morning Star Academic Cooperation, Shanghai
| | - Yixin Qi
- Department of Breast Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
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194
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Gu X, Zhang J, Ran Y, Pan H, Jia J, Zhao Y, Zhao X, Li W, Song S, Yu X. Circular RNA hsa_circ_101555 promotes hepatocellular carcinoma cell proliferation and migration by sponging miR-145-5p and regulating CDCA3 expression. Cell Death Dis 2021; 12:356. [PMID: 33824281 PMCID: PMC8024300 DOI: 10.1038/s41419-021-03626-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 03/10/2021] [Accepted: 03/16/2021] [Indexed: 11/09/2022]
Abstract
Circular RNAs have been reported to play significant roles in regulating pathophysiological processes while also guiding clinical diagnosis and treatment of hepatocellular carcinoma (HCC). However, only a few circRNAs have been identified thus far. Herein, we investigated the role of a specific closed-loop structure of hsa_circ_101555 that was generated by back-splicing of the host gene casein kinase 1 gamma 1 (CSNK1G1) in the development and proliferation of HCC. We investigated the expression of Hsa_circ_101555 in HCC and normal tissues using bioinformatics. The expression level of hsa_circ_101555 was further detected by fluorescence in situ hybridization and qRT-PCR in ten HCC patients. Transwell, migration, WST-1 assays, and colony formation assays were used to evaluate the role of hsa_circ_101555 in HCC development and proliferation. The regulatory mechanisms of hsa_circ_101555 in miR-145-5p and CDCA3 were determined by dual luciferase reporter assay. A mouse xenograft model was also used to determine the effect of hsa_circ_101555 on HCC growth in vivo. hsa_circ_101555 showed greater stability than the linear RNA; while in vitro and in vivo results demonstrated that hsa_circ_101555 silencing significantly suppressed cell proliferation, migration, and invasion of HCC cells. Rescue experiments further demonstrated that suppression of miR-145-5p significantly attenuated the biological effects of hsa_circ_101555 knockdown in HCC cells. We also identified a putative oncogene CDCA3 as a potential miR-145-5p target. Thus, our results demonstrated that hsa_circ_101555 might function as a competing endogenous RNA of miR-145-5p to upregulate CDCA3 expression in HCC. These findings suggest that hsa_circ_101555 may be a potential therapeutic target for patients with HCC.
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Affiliation(s)
- Xiaoguang Gu
- College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), 163319, Daqing, P. R. China
- Central Laboratory of Harbin Medical University (Daqing), 163319, Daqing, P. R. China
| | - Jianan Zhang
- College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), 163319, Daqing, P. R. China
- Central Laboratory of Harbin Medical University (Daqing), 163319, Daqing, P. R. China
| | - Yajuan Ran
- Central Laboratory of Harbin Medical University (Daqing), 163319, Daqing, P. R. China
- Department of Pharmacy, The Second Affiliated Hospital of Chongqing Medical University, 400010, Chongqing, P. R. China
| | - Hena Pan
- College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), 163319, Daqing, P. R. China
- Central Laboratory of Harbin Medical University (Daqing), 163319, Daqing, P. R. China
| | - JinHong Jia
- College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), 163319, Daqing, P. R. China
- Central Laboratory of Harbin Medical University (Daqing), 163319, Daqing, P. R. China
| | - Ying Zhao
- College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), 163319, Daqing, P. R. China
- Central Laboratory of Harbin Medical University (Daqing), 163319, Daqing, P. R. China
| | - Xijuan Zhao
- College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), 163319, Daqing, P. R. China
- Central Laboratory of Harbin Medical University (Daqing), 163319, Daqing, P. R. China
| | - Wendi Li
- Central Laboratory of Harbin Medical University (Daqing), 163319, Daqing, P. R. China
- Department of Pharmacology, Harbin university of commerce, 150081, Harbin, P. R. China
| | - Shasha Song
- College of Pharmacy, Shenzhen Technology University, 518118, Shenzhen, P.R. China
| | - Xiufeng Yu
- College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), 163319, Daqing, P. R. China.
- Central Laboratory of Harbin Medical University (Daqing), 163319, Daqing, P. R. China.
- Department of Pharmacy, The Second Affiliated Hospital of Chongqing Medical University, 400010, Chongqing, P. R. China.
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195
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Liu X, Du Z, Yi X, Sheng T, Yuan J, Jia J. Circular RNA circANAPC2 mediates the impairment of endochondral ossification by miR-874-3p/SMAD3 signalling pathway in idiopathic short stature. J Cell Mol Med 2021; 25:3408-3426. [PMID: 33713570 PMCID: PMC8034469 DOI: 10.1111/jcmm.16419] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 02/06/2021] [Accepted: 02/10/2021] [Indexed: 02/06/2023] Open
Abstract
Idiopathic short stature (ISS) is a main reason for low height among children. Its exact aetiology remains unclear. Recent findings have suggested that the aberrant expression of circRNAs in peripheral blood samples is associated with many diseases. However, to date, the role of aberrant circRNA expression in mediating ISS pathogenesis remains largely unknown. The up-regulated circANAPC2 was identified by circRNA microarray analysis and RT-qPCR. Overexpression of circANAPC2 inhibited the proliferation of human chondrocytes, and cell cycle was arrested in G1 phase. The expressions of collagen type X, RUNX2, OCN and OPN were significantly down-regulated following circANAPC2 overexpression. Moreover, Von Kossa staining intensity and alkaline phosphatase activity were also decreased. Luciferase reporter assay results showed that circANAPC2 could be targeted by miR-874-3p. CircANAPC2 overexpression in human chondrocytes inhibits the expression of miR-874-3p. The co-localization of circANAPC2 and miR-874-3p was confirmed in both human chondrocytes and murine femoral growth plates via in situ hybridization. The rescue experiment demonstrated that the high expression of miR-874-3p overexpression antagonized the suppression of endochondral ossification, hypertrophy and chondrocyte growth caused by circANAPC2 overexpression. A high-throughput screening of mRNA expression and RT-qPCR verified SMAD3 demonstrated the highest different expressions following overcircANAPC2. Luciferase reporter assay results indicated that miR-874-3p could be targeted by Smad3, thus down-regulating the expression of Smad3. Subsequent rescue experiments of SMAD3 further confirmed that circANAPC2 suppresses endochondral ossification, hypertrophy and chondrocyte growth through miR-874-3p/Smad3 axis. The present study provides evidence that circANAPC2 can serve as a promising target for ISS treatment.
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Affiliation(s)
- Xijuan Liu
- Department of PediatricsThe Second Affiliated Hospital of Nanchang UniversityNanchang CityChina
| | - Zhi Du
- Department of OrthopaedicsThe Second Affiliated Hospital of Nanchang UniversityNanchang CityChina
| | - Xuan Yi
- Department of OrthopaedicsThe Second Affiliated Hospital of Nanchang UniversityNanchang CityChina
| | - Tianle Sheng
- Department of Molecular laboratoryThe Second Affiliated Hospital of Nanchang UniversityNanchang CityChina
| | - Jinghong Yuan
- Department of OrthopaedicsThe Second Affiliated Hospital of Nanchang UniversityNanchang CityChina
| | - Jingyu Jia
- Department of OrthopaedicsThe Second Affiliated Hospital of Nanchang UniversityNanchang CityChina
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196
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Yao MD, Zhu Y, Zhang QY, Zhang HY, Li XM, Jiang Q, Yan B. CircRNA expression profile and functional analysis in retinal ischemia-reperfusion injury. Genomics 2021; 113:1482-1490. [PMID: 33771636 DOI: 10.1016/j.ygeno.2021.03.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 03/09/2021] [Accepted: 03/21/2021] [Indexed: 12/30/2022]
Abstract
Retinal ischemia-reperfusion (I/R) is involved in the pathogenesis of many vision-threatening diseases. circRNAs act as key players in gene regulation and human diseases. However, the global circRNA expression profile in retinal I/R injury has not been fully uncovered. Herein, we established a murine model of retinal I/R injury and performed circRNA microarrays to identify I/R-related circRNAs. 1265 differentially expressed circRNAs were identified between I/R retinas and normal retinas. Notably, the detection of cWDR37 level in aqueous humor could discriminate glaucoma patients from cataract patients (AUC = 0.9367). cWdr37 silencing protected against hypoxic stress- or oxidative stress-induced retinal ganglion cell (RGC) injury. cWdr37 silencing alleviated IR-induced retinal neurodegeneration as shown by increased NeuN staining, reduced retinal reactive gliosis, and decreased retinal apoptosis. Collectively, this study provides a novel insight into the pathogenesis of retinal I/R injury. cWdr37 is a promising target for the diagnosis or treatment of I/R-related ocular diseases.
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Affiliation(s)
- Mu-Di Yao
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China; The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China
| | - Yan Zhu
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China; The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China
| | - Qiu-Yang Zhang
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China; The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China
| | - Hui-Ying Zhang
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China; The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China
| | - Xiu-Miao Li
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China; The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China
| | - Qin Jiang
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China; The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China.
| | - Biao Yan
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Shanghai Medical College, Fudan University, Shanghai, China; NHC Key Laboratory of Myopia (Fudan University), Key Laboratory of Myopia, Chinese Academy of Medical Sciences, China; Shanghai Key Laboratory of Visual Impairment and Restoration (Fudan University), Shanghai, China.
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197
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Megalocytivirus Induces Complicated Fish Immune Response at Multiple RNA Levels Involving mRNA, miRNA, and circRNA. Int J Mol Sci 2021; 22:ijms22063156. [PMID: 33808870 PMCID: PMC8003733 DOI: 10.3390/ijms22063156] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/16/2021] [Accepted: 03/16/2021] [Indexed: 12/22/2022] Open
Abstract
Megalocytivirus is an important viral pathogen to many farmed fishes, including Japanese flounder (Paralichthys olivaceus). In this study, we examined megalocytivirus-induced RNA responses in the spleen of flounder by high-throughput sequencing and integrative analysis of various RNA-seq data. A total of 1327 microRNAs (miRNAs), including 368 novel miRNAs, were identified, among which, 171 (named DEmiRs) exhibited significantly differential expressions during viral infection in a time-dependent manner. For these DEmiRs, 805 differentially expressed target mRNAs (DETmRs) were predicted, whose expressions not only significantly changed after megalocytivirus infection but were also negatively correlated with their paired DEmiRs. Integrative analysis of immune-related DETmRs and their target DEmiRs identified 12 hub DEmiRs, which, together with their corresponding DETmRs, formed an interaction network containing 84 pairs of DEmiR and DETmR. In addition to DETmRs, 19 DEmiRs were also found to regulate six key immune genes (mRNAs) differentially expressed during megalocytivirus infection, and together they formed a network consisting of 21 interactive miRNA-messenger RNA (mRNA) pairs. Further analysis identified 9434 circular RNAs (circRNAs), 169 of which (named DEcircRs) showed time-specific and significantly altered expressions during megalocytivirus infection. Integrated analysis of the DETmR-DEmiR and DEcircR-DEmiR interactions led to the identification of a group of competing endogenous RNAs (ceRNAs) constituted by interacting triplets of circRNA, miRNA, and mRNA involved in antiviral immunity. Together these results indicate that complicated regulatory networks of different types of non-coding RNAs and coding RNAs are involved in megalocytivirus infection.
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198
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Geng J, Yang K. circCCND1 Regulates Oxidative Stress and FGF9 to Enhance Chemoresistance of Non-Small Cell Lung Cancer via Sponging miR-187-3p. DNA Cell Biol 2021; 40:675-682. [PMID: 33733860 DOI: 10.1089/dna.2020.6412] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Circular RNAs have been shown to regulate cancer tumorigenesis and drug resistance. Recently, circCCND1 is reported to promote laryngeal squamous cell carcinoma; however, whether circCCND1 is implicated in non-small cell lung cancer (NSCLC) remains unclear. In this research, The Cancer Genome Atlas data of lung adenocarcinoma were analyzed to show gene expression and overall survival. 3-(4,5)-dimethylthiahiazo (-z-y1)-3,5-di- phenytetrazoliumromide assay and cell colony formation assay were utilized to measure cell viability and proliferation of A549 and HCC827. Apoptosis was detected by TdT-mediated dUTP Nick-End Labeling assay. Besides, reverse transcription-quantitative PCR was used to examine gene expression. We observed that circCCND1 was significantly upregulated in lung cancer cells and patients. circCCND1 knockdown attenuated cell proliferation and induced apoptosis under cisplatin treatment. Mechanistically, circCCND1 interacted with miR-187-3p to regulate reactive oxygen species and FGF9 in NSCLC cells. Finally, miR-187-3p was demonstrated to rescue circCCND1 knockdown-modulated chemoresistance of NSCLC cells. In this study, our conclusions facilitate the understanding of NSCLC drug resistance to cisplatin.
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Affiliation(s)
- Jiqun Geng
- Department of Thoracic Surgery, and Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Kaihua Yang
- Department of Radiotherapy, Affiliated Hospital of Jiangnan University, Wuxi, China
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199
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Ma R, Ye X, Cheng H, Cui H, Chang X. Tumor-derived exosomal circRNA051239 promotes proliferation and migration of epithelial ovarian cancer. Am J Transl Res 2021; 13:1125-1139. [PMID: 33841644 PMCID: PMC8014378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 12/09/2020] [Indexed: 06/12/2023]
Abstract
Recent studies have shown the involvement of exosomes in intercellular communication during tumor progression. Circular RNAs (circRNAs) can be packaged into exosomes for extracellular communication, however, the possible effects of exosomal circRNAs in epithelial ovarian cancer (EOC) cells with high metastatic potential have been rarely studied. In this study, we identified exosomal circRNA051239 from high-metastatic ovarian cancer SKOV3.ip cells and subsequently analyzed circRNA051239 levels in both EOC tissues and exosomes derived from plasma and cells by qRT-PCR. A variety of in vitro assays were employed to observe the effects of exosomal circRNA051239 derived from high-metastatic ovarian cancer SKOV3.ip cells on low-metastatic ovarian cancer SKOV3 cells. Bioinformatics analysis and luciferase activity assays were further utilized to confirm the relationship between circRNA051239, miR-509-5p and PRSS3. As a result, circRNA051239 expression was increased in tissues and plasma exosomes from EOC patients. Moreover, si-circRNA051239-Exo (exosomes derived from circRNA051239 knockdown SKOV3.ip cells) inhibited the proliferation, migration as well as invasion of SKOV3 cells. Mechanistically, circRNA051239 functioned as a competitive endogenous RNA (ceRNA) by sponging miR-509-5p to facilitate PRSS3 expression. Exosomal circRNA051239 derived from high-metastatic ovarian cancer SKOV3.ip cells promoted the progression of low-metastatic ovarian cancer SKOV3 cells. Collectively, these outcomes implicated that higher metastatic EOC cells can confer this potential to lower metastatic potential via exosomal circRNA051239, causing enhanced proliferative, migratory and invasive capacities in recipient cells.
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Affiliation(s)
- Ruiqiong Ma
- Department of Obstetrics and Gynecology, Peking University People’s HospitalBeijing 100044, China
- Center of Gynecologic Oncology, Peking University People’s HospitalBeijing 100044, China
| | - Xue Ye
- Department of Obstetrics and Gynecology, Peking University People’s HospitalBeijing 100044, China
- Center of Gynecologic Oncology, Peking University People’s HospitalBeijing 100044, China
| | - Hongyan Cheng
- Department of Obstetrics and Gynecology, Peking University People’s HospitalBeijing 100044, China
- Center of Gynecologic Oncology, Peking University People’s HospitalBeijing 100044, China
| | - Heng Cui
- Department of Obstetrics and Gynecology, Peking University People’s HospitalBeijing 100044, China
- Center of Gynecologic Oncology, Peking University People’s HospitalBeijing 100044, China
| | - Xiaohong Chang
- Department of Obstetrics and Gynecology, Peking University People’s HospitalBeijing 100044, China
- Center of Gynecologic Oncology, Peking University People’s HospitalBeijing 100044, China
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200
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Xiao L, Rao JN, Wang JY. RNA-binding proteins and long noncoding RNAs in intestinal epithelial autophagy and barrier function. Tissue Barriers 2021; 9:1895648. [PMID: 33709880 DOI: 10.1080/21688370.2021.1895648] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The intestinal autophagy and barrier function are crucial for maintaining the epithelium homeostasis and tightly regulated through well-controlled mechanisms. RNA-binding proteins (RBPs) and long noncoding RNAs (lncRNAs) modulate gene expression at the posttranscription level and are intimately involved in different physiological processes and diverse human diseases. In this review, we first highlight the roles of several RBPs and lncRNAs in the regulation of intestinal epithelial autophagy and barrier function, particularly focusing on the emerging evidence of RBPs and lncRNAs in the control of mRNA stability and translation. We additionally discuss recent findings that the interactions between RBPs and lncRNAs alter the fate of their target transcripts and thus influence gut epithelium host defense in response to stressful environments. These exciting advances in understanding the posttranscriptional control of the epithelial autophagy and barrier function by RBPs and lncRNAs provide a strong rationale for developing new effective therapeutics based on targeting RBPs and/or lncRNAs to preserve the intestinal epithelial integrity in patients with critical illnesses.
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Affiliation(s)
- Lan Xiao
- Cell Biology Group, Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, USA.,Baltimore Veterans Affairs Medical Center, Baltimore, MD, USA
| | - Jaladanki N Rao
- Cell Biology Group, Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, USA.,Baltimore Veterans Affairs Medical Center, Baltimore, MD, USA
| | - Jian-Ying Wang
- Cell Biology Group, Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, USA.,Baltimore Veterans Affairs Medical Center, Baltimore, MD, USA.,Department of Pathology, Department of Veterans Affairs, USA
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