51
|
Proulex GCR, Meade MJ, Manoylov KM, Cahoon AB. Mitochondrial mRNA Processing in the Chlorophyte Alga Pediastrum duplex and Streptophyte Alga Chara vulgaris Reveals an Evolutionary Branch in Mitochondrial mRNA Processing. PLANTS (BASEL, SWITZERLAND) 2021; 10:576. [PMID: 33803683 PMCID: PMC8003010 DOI: 10.3390/plants10030576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/12/2021] [Accepted: 03/13/2021] [Indexed: 11/17/2022]
Abstract
Mitochondria carry the remnant of an ancestral bacterial chromosome and express those genes with a system separate and distinct from the nucleus. Mitochondrial genes are transcribed as poly-cistronic primary transcripts which are post-transcriptionally processed to create individual translationally competent mRNAs. Algae post-transcriptional processing has only been explored in Chlamydomonas reinhardtii (Class: Chlorophyceae) and the mature mRNAs are different than higher plants, having no 5' UnTranslated Regions (UTRs), much shorter and more variable 3' UTRs and polycytidylated mature mRNAs. In this study, we analyzed transcript termini using circular RT-PCR and PacBio Iso-Seq to survey the 3' and 5' UTRs and termini for two green algae, Pediastrum duplex (Class: Chlorophyceae) and Chara vulgaris (Class: Charophyceae). This enabled the comparison of processing in the chlorophyte and charophyte clades of green algae to determine if the differences in mitochondrial mRNA processing pre-date the invasion of land by embryophytes. We report that the 5' mRNA termini and non-template 3' termini additions in P. duplex resemble those of C. reinhardtii, suggesting a conservation of mRNA processing among the chlorophyceae. We also report that C. vulgaris mRNA UTRs are much longer than chlorophytic examples, lack polycytidylation, and are polyadenylated similar to embryophytes. This demonstrates that some mitochondrial mRNA processing events diverged with the split between chlorophytic and streptophytic algae.
Collapse
Affiliation(s)
- Grayson C. R. Proulex
- Department of Natural Sciences, The University of Virginia’s College at Wise, 1 College Ave., Wise, VA 24293, USA; (G.C.R.P.); (M.J.M.)
| | - Marcus J. Meade
- Department of Natural Sciences, The University of Virginia’s College at Wise, 1 College Ave., Wise, VA 24293, USA; (G.C.R.P.); (M.J.M.)
| | - Kalina M. Manoylov
- Department of Biological and Environmental Sciences, Georgia College and State University, Milledgeville, GA 31061, USA;
| | - A. Bruce Cahoon
- Department of Natural Sciences, The University of Virginia’s College at Wise, 1 College Ave., Wise, VA 24293, USA; (G.C.R.P.); (M.J.M.)
| |
Collapse
|
52
|
Qu Y, Qi L, Hao L, Zhu J. Upregulation of circ-ASPH contributes to glioma cell proliferation and aggressiveness by targeting the miR-599/AR/SOCS2-AS1 signaling pathway. Oncol Lett 2021; 21:388. [PMID: 33777211 PMCID: PMC7988692 DOI: 10.3892/ol.2021.12649] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 02/11/2021] [Indexed: 12/14/2022] Open
Abstract
Glioma (GM) is the most common type of malignant brain tumor with a high recurrence rate. Circular RNAs (circRNAs) play a key role in mediating tumorigenesis. However, the functions and mechanisms of circRNAs in GM are still not fully understood. A circRNA microarray was performed to identify differentially expressed circRNAs in GM and non-cancerous specimens. Reverse transcription-quantitative PCR was used to detect circ-aspartyl/asparaginyl β-hydroxylase (ASPH) expression in GM tissues and cells. The clinical importance of circ-ASPH was investigated using Kaplan-Meier analysis. The functions of circ-ASPH were investigated in LN229 and U87MG cells. Bioinformatics, RNA immunoprecipitation, RNA pull-down and luciferase reporter assays were used to explore the mechanisms of circ-ASPH in GM. circ-ASPH levels were upregulated in GM specimens and cells. The prognostic role of circ-ASPH was identified in patients with GM. Loss/gain of function assays demonstrated that circ-ASPH increased cell proliferation, migration and invasion in GM cells. Mechanistically, circ-ASPH counteracted microRNA (miR)-599-mediated androgen receptor (AR) suppression by acting as a sponge for miR-599. Rescue assays indicated that circ-ASPH facilitated cell progression by regulating AR expression. Moreover, AR activated long non-coding RNA suppressor of cytokine signaling 2-antisense RNA 1 (SOCS2-AS1) expression in GM cells. Taken together, circ-ASPH/miR-599/AR/SOCS2-AS1 signaling may be a promising biomarker/therapeutic target for GM.
Collapse
Affiliation(s)
- Yi Qu
- Department of Neurosurgery, The First Hospital of Qiqihar, Qiqihar Medical University, Qiqihar, Heilongjiang 161000, P.R. China.,Department of Neurosurgery, Qiqihar Hospital Affiliated to Southern Medical University, Qiqihar, Heilongjiang 161000, P.R. China
| | - Li Qi
- Department of Nursing, Qiqihar Medical University, Qiqihar, Heilongjiang 161000, P.R. China
| | - Liguo Hao
- Department of Medical Technology, Qiqihar Medical University, Qiqihar, Heilongjiang 161000, P.R. China
| | - Jian Zhu
- Department of Neurosurgery, The First Hospital of Qiqihar, Qiqihar Medical University, Qiqihar, Heilongjiang 161000, P.R. China.,Department of Neurosurgery, Qiqihar Hospital Affiliated to Southern Medical University, Qiqihar, Heilongjiang 161000, P.R. China
| |
Collapse
|
53
|
Xiang R, Feng M, Zhou X, Ma L, Dong N. circAPLP2 promotes colorectal cancer progression by upregulating HELLS by targeting miR-335-5p. Open Med (Wars) 2021. [DOI: 10.1515/med-2021-0229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
Colorectal cancer (CRC) is one of the deadliest cancers in the world. Increasing evidence suggests that circular RNAs (circRNAs) are implicated in CRC pathogenesis. This study aimed to determine the role of circAPLP2 and explore a potential mechanism of circAPLP2 action in CRC.
Methods
The expression of circAPLP2, miR-335-5p and helicase lymphoid-specific (HELLS) mRNA in CRC tissues and cells was measured by quantitative real-time polymerase chain reaction (qPCR). The functional effects of circAPLP2 on cell cycle progression/cell apoptosis, colony formation, cell migration, invasion and glycolysis metabolism were investigated by flow cytometry assay, colony formation assay, wound healing assay, transwell assay and glycolysis stress test. Glycolysis metabolism was also assessed by the levels of glucose uptake and lactate production. The protein levels of HELLS and HK2 were detected by western blot. The interaction between circAPLP2 and miR-335-5p, or miR-335-5p and HELLS was verified by dual-luciferase reporter assay. The role of circAPLP2 on solid tumor growth in nude mice was investigated.
Results
circAPLP2 and HELLS were overexpressed, but miR-335-5p was downregulated in CRC tissues and cells. Functional analyses showed that circAPLP2 knockdown suppressed CRC cell cycle progression, colony formation, migration, invasion and glycolysis metabolism, induced cell apoptosis and blocked solid tumor growth in nude mice. Moreover, miR-335-5p was a target of circAPLP2, and miR-335-5p could also bind to HELLS. Rescue experiments presented that miR-335-5p inhibition reversed the effects of circAPLP2 knockdown, and HELLS overexpression abolished the role of miR-335-5p restoration. Importantly, circAPLP2 could positively regulate HELLS expression by mediating miR-335-5p.
Conclusion
circAPLP2 triggered CRC malignant development by increasing HELLS expression via targeting miR-335-5p, which might be a novel strategy to understand and treat CRC.
Collapse
Affiliation(s)
- Rui Xiang
- Department of Gastroenterology, West Hospital of Zibo Central Hospital , No. 10 Shanghai Road, Zhangdian District , Zibo , Shandong, 255000 , China
| | - Min Feng
- Department of Gastroenterology, West Hospital of Zibo Central Hospital , No. 10 Shanghai Road, Zhangdian District , Zibo , Shandong, 255000 , China
| | - Xin Zhou
- Department of Gastroenterology, West Hospital of Zibo Central Hospital , No. 10 Shanghai Road, Zhangdian District , Zibo , Shandong, 255000 , China
| | - Lihong Ma
- Department of Gastroenterology, West Hospital of Zibo Central Hospital , No. 10 Shanghai Road, Zhangdian District , Zibo , Shandong, 255000 , China
| | - Ningfei Dong
- Department of Gastroenterology, West Hospital of Zibo Central Hospital , No. 10 Shanghai Road, Zhangdian District , Zibo , Shandong, 255000 , China
| |
Collapse
|
54
|
Jian F, Yangyang R, Wei X, Jiadan X, Na L, Peng Y, Maohong B, Guoping N, Zhaoji P. The Prognostic and Predictive Significance of circRNA CDR1as in Tumor Progression. Front Oncol 2021; 10:549982. [PMID: 33665157 PMCID: PMC7924075 DOI: 10.3389/fonc.2020.549982] [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: 05/19/2020] [Accepted: 12/30/2020] [Indexed: 12/14/2022] Open
Abstract
Cerebellar degeneration-related protein 1 antisense (CDR1as) is an important member of the circRNAs family, also known as cirs-7. Its main function in vivo is to act as a mir-7 sponge. Accumulated studies show that CDR1as is closely related to various diseases, especially cancer. Our analysis show that CDR1as expression in human cancer is significantly associated with poor overall survival (hazard ratio [HR] = 2.50, 95% confidence interval [CI] = 2.06–3.04; p < 0.00001) and that high CDR1as expression is associated with the tumor node metastasis stage (odds ratio [OR] = 2.13, 95% CI = 1.63–2.78; p < 0.00001), and distant metastasis (OR = 3.50, 95% CI = 1.90–6.64; p < 0.00001). Furthermore, the results reveal the prognostic significance of CDR1as in neoplasms of the digestive system (HR = 1.69, 95% CI = 2.14–2.71; p < 0.001), colorectal cancer (HR = 1.34, 95% CI = 1.96–2.85; p < 0.001), and non-small cell lung cancer (HR = 2.40, 95% CI = 3.42–4.83; p = 0.008). In this study, we summarize in detail the latest research findings and demonstrate the function and regulatory mechanism of CDR1as in various cancer processes, and its potential as a biomarker for cancer prevention and prognosis.
Collapse
Affiliation(s)
- Fang Jian
- Department of Blood Transfusion, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Ren Yangyang
- Clinical Laboratory, Xinyi People's Hospital, Xuzhou, China
| | - Xu Wei
- Department of Blood Transfusion, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Xu Jiadan
- Department of Clinical Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Li Na
- Department of Blood Transfusion, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yang Peng
- Department of Blood Transfusion, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Bian Maohong
- Department of Blood Transfusion, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Niu Guoping
- Clinical Laboratory, Xuzhou Central Hospital, The Affiliated XuZhou Hospital of Medical College of Southeast University, Xuzhou, China
| | - Pan Zhaoji
- Clinical Laboratory, Xuzhou Central Hospital, The Affiliated XuZhou Hospital of Medical College of Southeast University, Xuzhou, China
| |
Collapse
|
55
|
Ma Q, Huai B, Liu Y, Jia Z, Zhao Q. Circular RNA circ_0020123 Promotes Non-Small Cell Lung Cancer Progression Through miR-384/TRIM44 Axis. Cancer Manag Res 2021; 13:75-87. [PMID: 33442296 PMCID: PMC7800473 DOI: 10.2147/cmar.s278913] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 11/20/2020] [Indexed: 01/03/2023] Open
Abstract
Background It was reported that circular RNAs (circRNAs) and microRNAs (miRNAs) were related to non-small cell lung cancer (NSCLC) development. However, the detailed mechanisms of circ_0020123 and miR-384 in NSCLC are elusive. Methods QRT-PCR and Western blot assay were performed to detect the transcription and protein levels of genes, respectively. Then, the functional experiments, including MTT assay, flow cytometry, and transwell assay, were employed. Besides, the interaction between miR-384 and circ_0020123 or tripartite motif‑containing protein 44 (TRIM44) was predicted by starbase or targetscan, and then verified by the dual-luciferase reporter, RNA pull-down assays and RNA immunoprecipitation assay (RIP). Mouse xenograft assay was performed to evaluate the effect of circ_0020123 on tumor growth in vivo. Results Levels of circ_0020123 and TRIM44 were enhanced, and the miR-384 level was attenuated in NSCLC tissues and cells. Circ_0020123 depletion attenuated the abilities of NSCLC cell viability, migration, invasion, and epithelial–mesenchymal transition (EMT), and induced apoptosis. Besides, circ_0020123 interacted with miR-384, and miR-384 targeted TRIM44. Circ_0020123 regulated cell progression by regulating miR-384 and subsequently mediated TRIM44 expression. Besides, circ_0020123 depletion repressed tumor growth in vivo. Conclusion We demonstrated that circ_0020123 knockdown suppressed NSCLC cell progression by regulating the miR-384/TRIM44 axis, providing the theoretical basis for the therapy of NSCLC.
Collapse
Affiliation(s)
- Qingshan Ma
- Department of Oncology, Linyi People's Hospital, Linyi, Shandong 276000, People's Republic of China
| | - Baogang Huai
- Department of Pulmonary Disease, Pinyi County Hospital of Traditional Chinese Medicine, Linyi, Shandong 273300, People's Republic of China
| | - Yuting Liu
- University Department, Linyi People's Hospital, Linyi, Shandong 276000, People's Republic of China
| | - Zhongyao Jia
- Department of Oncology, Linyi People's Hospital, Linyi, Shandong 276000, People's Republic of China
| | - Qilong Zhao
- Department of Oncology, Linyi People's Hospital, Linyi, Shandong 276000, People's Republic of China
| |
Collapse
|
56
|
Xu X, Wu Z, Qiu H, Wu J. Circular RNA circPHC3 Promotes Cell Death and Apoptosis in Human BMECs After Oxygen Glucose Deprivation via miR-455-5p/TRAF3 Axis in vitro. Neuropsychiatr Dis Treat 2021; 17:147-156. [PMID: 33519202 PMCID: PMC7837587 DOI: 10.2147/ndt.s288669] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Accepted: 12/29/2020] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE Brain microvascular endothelial cells (BMECs) are involved in brain vascular dysfunction in ischemic stroke. Abnormal expression of circular RNAs regulate physiological and pathophysiological processes in the central nervous system. The aim of the present study was to investigate profile circRNAs in human BMECs after oxygen glucose deprivation (OGD), which was an in vitro model of ischemic stroke, and find promising biomarkers in ischemic stroke. METHODS RNA sequencing (RNA-seq) technology was conducted to analyze the differential expression of circRNAs between BMECs after OGD and non-OGD treated BMECs. RT-qPCR, cell proliferation, cell apoptosis and dual-luciferase assay, and so on, were used to investigate the functions and molecular mechanisms of hsa_circ_0001360 (named circPHC3 in this study) in ischemic stroke. RESULTS CircPHC3 was highly expressed in human BMECs after OGD. Knockdown of circPHC3 inhibited cell death and apoptosis in human BMECs treated with OGD. Mechanistically, circPHC3 acted as miR-455-5p sponge to activate TRAF3 to promote cell death and apoptosis in human BMECs after OGD. CONCLUSION In short, circPHC3 promotes cell death and apoptosis in ischemic stroke in vitro model, which might be a novel molecular target for acute cerebrovascular protection.
Collapse
Affiliation(s)
- Xiaonan Xu
- Department of Neurology, Peking University Shenzhen Hospital, Shenzhen 518000, Guangdong Province, People's Republic of China
| | - Zimu Wu
- Department of Neurology, Peking University Shenzhen Hospital, Shenzhen 518000, Guangdong Province, People's Republic of China
| | - Hongyan Qiu
- Department of Neurology, Peking University Shenzhen Hospital, Shenzhen 518000, Guangdong Province, People's Republic of China
| | - Jun Wu
- Department of Neurology, Peking University Shenzhen Hospital, Shenzhen 518000, Guangdong Province, People's Republic of China
| |
Collapse
|
57
|
Cerina: systematic circRNA functional annotation based on integrative analysis of ceRNA interactions. Sci Rep 2020; 10:22165. [PMID: 33335165 PMCID: PMC7746713 DOI: 10.1038/s41598-020-78469-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 10/06/2020] [Indexed: 12/21/2022] Open
Abstract
Circular RNAs, a family of covalently circularized RNAs with tissue-specific expression, were recently demonstrated to play important roles in mammalian biology. Regardless of extensive research to predict, quantify, and annotate circRNAs, our understanding of their functions is still in its infancy. In this study, we developed a novel computational tool: Competing Endogenous RNA for INtegrative Annotations (Cerina), to predict biological functions of circRNAs based on the competing endogenous RNA model. Pareto Frontier Analysis was employed to integrate ENCODE mRNA/miRNA data with predicted microRNA response elements to prioritize tissue-specific ceRNA interactions. Using data from several circRNA-disease databases, we demonstrated that Cerina significantly improved the functional relevance of the prioritized ceRNA interactions by several folds, in terms of precision and recall. Proof-of-concept studies on human cancers and cardiovascular diseases further showcased the efficacy of Cerina on predicting potential circRNA functions in human diseases.
Collapse
|
58
|
Ma H, Lu L, Xia H, Xiang Q, Sun J, Xue J, Xiao T, Cheng C, Liu Q, Shi A. Circ0061052 regulation of FoxC1/Snail pathway via miR-515-5p is involved in the epithelial-mesenchymal transition of epithelial cells during cigarette smoke-induced airway remodeling. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 746:141181. [PMID: 32768781 DOI: 10.1016/j.scitotenv.2020.141181] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 07/20/2020] [Accepted: 07/21/2020] [Indexed: 06/11/2023]
Abstract
Circular RNA (circRNA) has been shown to be widely involved in a variety of lung diseases. Cigarette smoke (CS) may induce epithelial-mesenchymal transition (EMT) of airway remodeling in chronic obstructive pulmonary disease (COPD), however, in which the roles and mechanisms of circRNA have not been elucidated. In this study, we aimed to determine whether circ0061052 is involved in the EMT of human bronchial epithelial (HBE) cells and its potential mechanism for playing a biological role. Cigarette smoke extract (CSE) caused elevated EMT indicators and the increases of circ0061052 in HBE cells. Circ0061052 has a ring structure and is mainly present in the cytoplasm of HBE cells. We analyzed the regulatory relationship between circ0061052 and miR-515-5p using bioinformatics, a luciferase reporter gene, and qRT-PCR. We found that circ0061052 is mainly distributed in the cytoplasm and competitively binds to miR-515-5p, acting as a sponge for miR-515-5p. The luciferase reporter gene showed that miR-515-5p binds to the 3'UTR region of FoxC1 mRNA to inhibit its transcription. For HBE cells, overexpression of miR-515-5p antagonized the CSE-induced EMT. In addition, circ0061052 acts by binding miR-515-5p competitively to regulate the expression of FoxC1/Snail. When circ0061052 siRNA and miR-515-5p inhibitor were co-transfected into HBE cells, the inhibitor reversed the effect of circ0061052 siRNA on reducing EMT. Chronic exposure of mice to CS induced increases of circ0061052 levels, decreases of miR-515-5p levels, and the EMT in lung tissue, which caused dysfunction and airway obstruction. Overall, the results show that, by regulating miR-515-5p through a FoxC1/Snail regulatory axis, circ0061052 is involved in the CS-induced EMT and airway remodeling in COPD.
Collapse
Affiliation(s)
- Huimin Ma
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, People's Republic of China; The Key Laboratory of Model Animal, Animal Core Facility, Jiangsu Animal Experimental Center for Medical and Pharmaceutical Research, Nanjing Medical University, Nanjing 211166, Jiangsu, People's Republic of China
| | - Lu Lu
- The Key Laboratory of Model Animal, Animal Core Facility, Jiangsu Animal Experimental Center for Medical and Pharmaceutical Research, Nanjing Medical University, Nanjing 211166, Jiangsu, People's Republic of China
| | - Haibo Xia
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, People's Republic of China
| | - Quanyong Xiang
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, 210009, Jiangsu, People's Republic of China
| | - Jing Sun
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, People's Republic of China
| | - Junchao Xue
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, People's Republic of China
| | - Tian Xiao
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, People's Republic of China
| | - Cheng Cheng
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, People's Republic of China
| | - Qizhan Liu
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, People's Republic of China.
| | - Aimin Shi
- The Key Laboratory of Model Animal, Animal Core Facility, Jiangsu Animal Experimental Center for Medical and Pharmaceutical Research, Nanjing Medical University, Nanjing 211166, Jiangsu, People's Republic of China.
| |
Collapse
|
59
|
Yan X, Wang T, Wang J. Circ_0016760 Acts as a Sponge of MicroRNA-4295 to Enhance E2F Transcription Factor 3 Expression and Facilitates Cell Proliferation and Glycolysis in Nonsmall Cell Lung Cancer. Cancer Biother Radiopharm 2020; 37:147-158. [PMID: 33232618 DOI: 10.1089/cbr.2020.3621] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Background: Circular RNAs (circRNAs) have been validated as important regulators of nonsmall cell lung cancer (NSCLC), but the role and potential mechanism of circ_0016760 in NSCLC remain largely unclear. Materials and Methods: Quantitative real-time polymerase chain reaction was performed to detect the levels of circ_0016760, microRNA-4295 (miR-4295), and E2F transcription factor 3 (E2F3). The cell proliferation was measured by methyl-thiazolyl diphenyl-tetrazolium bromide assay. The protein levels of proliferating cell nuclear antigen and E2F3 were examined by Western blot. Xenograft mice model was constructed to explore the effect of circ_0016760 on tumor growth in vivo. The relationship among circ_0016760, miR-4295, and E2F3 was evaluated using dual-luciferase reporter assay. Glucose consumption of NSCLC cells was assessed by the glucose assay kit. Results: Circ_0016760 and E2F3 expression levels were upregulated in NSCLC tissues and cells, while miR-4295 was downregulated. Circ_0016760 could bind to miR-4295, and negatively modulate its expression in NSCLC cells. Besides, miR-4295 directly targeted E2F3 and inversely regulated E2F3 expression. More importantly, Circ_0016760 facilitated proliferation and glycolysis of NSCLC cells by increasing E2F3 by sponging miR-4295 as well as promoted the tumor growth in vivo. Conclusion: Circ_0016760 served as a growth-promoting circRNA in NSCLC by facilitating cell proliferation and glycolysis by regulating the miR-4295/E2F3 axis, providing a novel potential target for NSCLC treatment.
Collapse
Affiliation(s)
- Xuebo Yan
- Department of Geriatric Respiratory and Critical Care, Institute of Respiratory Disease, Provincial Key Laboratory of Molecular Medicine for Geriatric Disease, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Tong Wang
- Department of General Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Jiong Wang
- Department of Geriatric Respiratory and Critical Care, Institute of Respiratory Disease, Provincial Key Laboratory of Molecular Medicine for Geriatric Disease, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| |
Collapse
|
60
|
Profile of circulating microRNAs in myalgic encephalomyelitis and their relation to symptom severity, and disease pathophysiology. Sci Rep 2020; 10:19620. [PMID: 33184353 PMCID: PMC7665057 DOI: 10.1038/s41598-020-76438-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 10/28/2020] [Indexed: 12/19/2022] Open
Abstract
Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a complex chronic disease, rooted in multi-system dysfunctions characterized by unexplained debilitating fatigue. Post-exertional malaise (PEM), defined as the exacerbation of the patient's symptoms following minimal physical or mental stress, is a hallmark of ME/CFS. While multiple case definitions exist, there is currently no well-established biomarkers or laboratory tests to diagnose ME/CFS. Our study aimed to investigate circulating microRNA expression in severely ill ME/CFS patients before and after an innovative stress challenge that stimulates PEM. Our findings highlight the differential expression of eleven microRNAs associated with a physiological response to PEM. The present study uncovers specific microRNA expression signatures associated with ME/CFS in response to PEM induction and reports microRNA expression patterns associated to specific symptom severities. The identification of distinctive microRNA expression signatures for ME/CFS through a provocation challenge is essential for the elucidation of the ME/CFS pathophysiology, and lead to accurate diagnoses, prevention measures, and effective treatment options.
Collapse
|
61
|
Circ-ZNF124 downregulation inhibits non-small cell lung cancer progression partly by inactivating the Wnt/β-catenin signaling pathway via mediating the miR-498/YES1 axis. Anticancer Drugs 2020; 32:257-268. [PMID: 33186139 DOI: 10.1097/cad.0000000000001014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Non-small cell lung cancer (NSCLC) is a major type of lung cancer, leading to a high fatality rate. The role of circular RNAs (circRNAs) in cancer has been increasingly emphasized and studied. However, the function of circ-ZNF124 in NSCLC is largely unclear, and associated regulatory mechanism is not studied. Here, we examined the expression pattern of circ-ZNF124 using quantitative real-time PCR. For functional analysis, cell proliferation, cell apoptosis/cycle and cell invasion were investigated using MTT [3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide] assay, flow cytometry assay and transwell assay, respectively. As results, we found that the expression of circ-ZNF124 was elevated in NSCLC tissues and cells. Functionally, circ-ZNF124 downregulation inhibited NSCLC cell proliferation and invasion but induced apoptosis and cycle arrest in vitro, and blocked tumor growth in vivo by animal experiments. Mechanistically, we identified that miR-498 was a target of circ-ZNF124, and miR-498 directly bound to YES proto-oncogene 1 (YES1). Besides, rescue experiments discovered that the cellular effects caused by circ-ZNF124 downregulation could be reversed by miR-498 inhibition or YES1 overexpression. Moreover, we discovered that circ-ZNF124 downregulation inactivated the expression of β-catenin and c-Myc by mediating the miR-498/YES axis. In conclusion, these findings supported that circ-ZNF124 regulated the expression of YES1 by acting as a sponge of miR-498, thus restraining NSCLC development by inactivating the Wnt/β-catenin signaling pathway, which provided a novel strategy to treat NSCLC.
Collapse
|
62
|
Circular RNA circ-CCAC1 Facilitates Adrenocortical Carcinoma Cell Proliferation, Migration, and Invasion through Regulating the miR-514a-5p/C22orf46 Axis. BIOMED RESEARCH INTERNATIONAL 2020; 2020:3501451. [PMID: 33195693 PMCID: PMC7641692 DOI: 10.1155/2020/3501451] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/09/2020] [Accepted: 10/14/2020] [Indexed: 01/02/2023]
Abstract
Adrenocortical carcinoma (ACC) is a rare but clinically aggressive endocrine malignancy. Circular RNAs (circRNAs) were found to play key roles in tumorigenesis. In the current study, we aimed to investigate the functions and mechanisms of a novel circRNA, circ-CCAC1, in ACC cells. circ-CCAC1 expression levels in ACC tissue specimens and cell lines were evaluated by RT-qPCR. Kaplan-Meier analysis was applied to explore the relationship between circ-CCAC1 and patients' prognosis. Cell counting kit-8 (CCK-8), colony formation, acridine orange/ethidium bromide (AO/EB) double fluorescence staining, and Transwell assays were performed to evaluate the functions of circ-CCAC1 in ACC cells. Bioinformatics analysis and a dual-luciferase reporter assay were utilized to explore the mechanisms of circ-CCAC1. As a result, circ-CCAC1 was overexpressed in ACC tissue samples and cell lines and correlated with poor prognosis. Gain- and loss-of-function tests demonstrated that circ-CCAC1 acted as an oncogene in ACC. What is more, circ-CCAC1 enhanced C22orf46 expression by sponging miR-514a-5p in ACC cells. A rescue assay illustrated that circ-CCAC1 facilitated ACC progression through miR-514a-5p/C22orf46 signaling. To sum up, we identified a novel circRNA, circ-CCAC1, which may be used as a potential therapeutic target for ACC.
Collapse
|
63
|
MetaDE-Based Analysis of circRNA Expression Profiles Involved in Gastric Cancer. Dig Dis Sci 2020; 65:2884-2895. [PMID: 31894486 DOI: 10.1007/s10620-019-06014-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 12/12/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Circular RNAs (circRNAs) could play carcinogenic roles in gastric cancer (GC) and have potential to be biomarkers for GC early diagnosis, which needs to be further excavated and supported by more evidence. AIMS The study aims to identify more authentic circRNA expression profiles that could function as potential biomarkers in GC. METHODS circRNA expression data in three microarrays were downloaded from Gene Expression Omnibus datasets. A systematic meta-analysis based on an integrated dataset pre-processed from the three microarrays was conducted to identify a panel of differentially expressed circRNAs (DEcircs) by using the metaDE package. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes term enrichment were used to note the corresponding functions of DEcircs. Quantitative real-time polymerase chain reaction was applied to verify the DEcircs expression in cancer tissues and adjacent paracancerous tissues. A GC risk-related circRNAs-miRNAs-mRNAs network was further constructed and analyzed. RESULTS MetaDE analysis suggested 64 DEcircs between cancer tissues and adjacent normal tissues. GO and KEGG analysis showed that the parental genes of these DEcircs were mainly associated with histone methylation, Wnt signalosome and histone methylation activity. Hsa_circ_0005927 and hsa_circ_0067934 were verified in GC tissues, and a GC risk-related network was constructed. CONCLUSION MetaDE-based circRNA expression profiles revealed a series of potential biomarkers involved in GC. Two circRNAs, hsa_circ_0005927 and hsa_circ_0067934, could be more authentic biomarkers for GC screening. The GC risk-related network of hsa_circ_0005927/hsa_circ_0067934 and their downstream targets will provide new genetic insights for GC research.
Collapse
|
64
|
Sun D, Zhu D. Circular RNA hsa_circ_0001649 suppresses the growth of osteosarcoma cells via sponging multiple miRNAs. Cell Cycle 2020; 19:2631-2643. [PMID: 32954926 DOI: 10.1080/15384101.2020.1814026] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Osteosarcoma (OS) is a serious bone malignancy commonly occurred in childhood and adolescence. Circular RNA (circRNA) is a novel endogenous RNA that may be considered as a new biomarker for diseases' diagnosis or prognosis. This study explored the roles and mechanism of circ_0001649 in OS. The qRT-PCR was performed to test circ_0001649 expression in OS tissues and cells. Luciferase was used to confirm the binding of circ_0001649 with miR-338-5p, miR-647 and miR-942. OS cells were stably transfected with pEX-circ_0001649 or miRNAs mimic, CCK-8 kit, colony formation, apoptosis and western blot analysis were used to detect the roles of circ_0001649. Circ_0001649 was low-expressed in OS tissues and cell lines. Circ_0001649 overexpression suppressed U2OS and HOS cell viability and survival fraction, and induced apoptosis presented as the increasing levels of Apaf-1, cleaved-caspase-3 and cleaved-caspase-9. Further, circ_0001649 worked as a sponge to absorb miR-338-5p, miR-647 and miR-942 to suppress cell proliferation, induce apoptosis and inhibit STAT pathway. Circ_0001649 suppressed OS cell proliferation and STAT pathway and induced apoptosis through sponging miR-338-5p, miR-647 and miR-942.
Collapse
Affiliation(s)
- Deping Sun
- Department of Orthopedic Trauma, Yantai Affiliated Hospital of Binzhou Medical University , Yantai 264000, Shandong, China
| | - Dongsheng Zhu
- Department of Orthopedic Trauma, Yantai Affiliated Hospital of Binzhou Medical University , Yantai 264000, Shandong, China
| |
Collapse
|
65
|
Xu Q, Zhou L, Yang G, Meng F, Wan Y, Wang L, Zhang L. CircIL4R facilitates the tumorigenesis and inhibits ferroptosis in hepatocellular carcinoma by regulating the miR-541-3p/GPX4 axis. Cell Biol Int 2020; 44:2344-2356. [PMID: 32808701 DOI: 10.1002/cbin.11444] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 08/05/2020] [Accepted: 08/16/2020] [Indexed: 12/24/2022]
Abstract
Ferroptosis is a specific iron-dependent cell death form that can induce the production of lipid peroxide, but the roles of circular RNAs (circRNAs) in ferroptosis are completely unaware. Circ-interleukin-4 receptor (circIL4R) was reported to express highly in hepatocellular carcinoma (HCC). This study focused on the function of circIL4R dysregulation in tumor progression and ferroptosis of HCC, as well as its molecular mechanism. The quantitative real-time polymerase chain reaction was implemented for measuring RNA expression. Cell proliferation and survival were evaluated using 3-(4,5-dimethylthiazol-2-y1)-2,5-diphenyl tetrazolium bromide. Apoptotic cells were detected via flow cytometry. The quantification of protein expression was executed through western blotting analysis. The target binding was assessed via the dual-luciferase reporter, RNA immunoprecipitation, and RNA pull-down assays. The experiment in vivo was performed using a xenograft model. CircIL4R was abnormally overexpressed in HCC tissues and cells. CircIL4R knockdown impeded oncogenesis and expedited ferroptosis of HCC cells. CircIL4R could directly sponge microRNA-541-3p (miR-541-3p) and miR-541-3p inhibition mitigated the effects of circIL4R knockdown on HCC cells. CircIL4R acted as a miR-541-3p sponge to regulate its target glutathione peroxidase 4 (GPX4). GPX4 upregulation relieved the miR-541-3p-induced tumor inhibition and ferroptosis aggravation. CircIL4R played an oncogenic role in HCC via the miR-541-3p/GPX4 axis in vivo. Our data suggested that circIL4R served for a tumor promoter and ferroptosis inhibitor in HCC by the miR-541-3p/GPX4 network.
Collapse
Affiliation(s)
- Qinhong Xu
- Department of Geriatric Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Lijing Zhou
- Department of Geriatric Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ganghua Yang
- Department of Geriatric Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Fandi Meng
- Department of Geriatric Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yong Wan
- Department of Geriatric Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Lin Wang
- Department of Geriatric Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Lei Zhang
- Department of Geriatric Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| |
Collapse
|
66
|
Protein-Related Circular RNAs in Human Pathologies. Cells 2020; 9:cells9081841. [PMID: 32781555 PMCID: PMC7463956 DOI: 10.3390/cells9081841] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/02/2020] [Accepted: 08/05/2020] [Indexed: 02/07/2023] Open
Abstract
Circular RNAs (circRNAs) are a distinct family of RNAs derived from alternative splicing which play a crucial role in regulating gene expression by acting as microRNA (miRNA) and RNA binding protein (RBP) sponges. However, recent studies have also reported the multifunctional potential of these particles. Under different conditions, circRNAs not only regulate protein synthesis, destination, and degradation but can serve as protein scaffolds or recruiters and are also able to produce short peptides with active biological functions. circRNAs are under ongoing investigation because of their close association with the development of diseases. Some circRNAs are reportedly expressed in a tissue- and development stage-specific manner. Furthermore, due to other features of circRNAs, including their stability, conservation, and high abundance in bodily fluids, they are believed to be potential biomarkers for various diseases, including cancers. In this review, we focus on providing a summary of the current knowledge on circRNA-protein interactions. We present the properties and functions of circRNAs, the possible mechanisms of their translation abilities, and the emerging functions of circRNA-derived peptides in human pathologies.
Collapse
|
67
|
Huang Y, Dai Y, Wen C, He S, Shi J, Zhao D, Wu L, Zhou H. circSETD3 Contributes to Acquired Resistance to Gefitinib in Non-Small-Cell Lung Cancer by Targeting the miR-520h/ABCG2 Pathway. MOLECULAR THERAPY. NUCLEIC ACIDS 2020; 21:885-899. [PMID: 32805491 PMCID: PMC7452060 DOI: 10.1016/j.omtn.2020.07.027] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 07/16/2020] [Accepted: 07/21/2020] [Indexed: 12/24/2022]
Abstract
Gefitinib is a first-line treatment for patients with non-small-cell lung cancer (NSCLC), but acquired resistance is a major obstacle to its therapeutic efficacy, and the underlying mechanisms are not fully elucidated. Recent studies have indicated that circular RNAs play a crucial role in chemoresistance, but their expression and function in NSCLC cells with acquired resistance to gefitinib are largely unknown. In this study, we determined that circSETD3 was significantly upregulated in gefitinib-resistant NSCLC cell lines and the plasma of gefitinib-resistant NSCLC patients. circSETD3 markedly decreased the gefitinib sensitivity of NSCLC cells both in vitro and in nude mice xenografts. It could directly bind to miR-520h and lead to the upregulation of ATP-binding cassette subfamily G member 2 (ABCG2), an efflux transporter of gefitinib, resulting in a reduced intracellular gefitinib concentration. Moreover, we reported that the downregulation of serine/arginine splicing factor 1 (SRSF1) contributed to, at least in part, the increased expression of circSETD3 in NSCLC cells with acquired resistance to gefitinib. Taken together, our findings indicated that circSETD3 may serve as a prognostic biomarker and a potential therapeutic target for acquired resistance to gefitinib in NSCLC.
Collapse
Affiliation(s)
- Yutang Huang
- Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, China
| | - Yi Dai
- Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, China; Wangjia Community Health Service Center, Chongqing 401120, China
| | - Chunjie Wen
- Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, China
| | - Shuai He
- Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, China
| | - Jingjing Shi
- Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, China
| | - Dezhang Zhao
- Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, China
| | - Lanxiang Wu
- Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, China.
| | - Honghao Zhou
- Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, China; Pharmacogenetics Research Institute, Institute of Clinical Pharmacology, Central South University, Changsha 410078, China
| |
Collapse
|
68
|
Liu W, Yin C, Liu Y. Circular RNA circ_0091579 Promotes Hepatocellular Carcinoma Proliferation, Migration, Invasion, and Glycolysis Through miR-490-5p/CASC3 Axis. Cancer Biother Radiopharm 2020; 36:863-878. [PMID: 32673066 DOI: 10.1089/cbr.2019.3472] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background: Hepatocellular carcinoma (HCC) is one of the most common malignancies with high invasion and metastasis capacities. Circular RNAs (circRNAs) were evidenced to take part in the progression of multifarious cancers, including HCC. However, the role of circ_0091579 in HCC progression has not been fully described. This study aimed to explore the function of circ_0091579 and its potential regulatory mechanism in the progression of HCC. Materials and Methods: The expression of circ_0091579, microRNA-490-5p (miR-490-5p), and cancer susceptibility candidate 3 (CASC3) in HCC tissues and cells was detected by quantitative real-time polymerase chain reaction. The circular characteristic and stability of circ_0091579 were verified by RNase R digestion and actinomycin D reaction assays. Cell proliferation, migration, and invasion were determined by methyl thiazolyl tetrazolium assay and Transwell assay, respectively. The level of glycolysis was evaluated by glucose consumption and lactate production. The levels of proteins were examined by Western blot. The interaction between miR-490-5p and circ_0091579 or CASC3 was certified by Dual-luciferase reporter assay. Results: circ_0091579 and CASC3 were upregulated, while miR-490-5p was downregulated in HCC tissues and cells. Silencing of either circ_0091579 or CASC3 suppressed cell proliferation, migration, invasion, and glycolysis in HCC cells. Moreover, miR-490-5p was verified to directly bind to circ_0091579 and CASC3. Circ_0091579 upregulated CASC3 by sponging miR-490-5p in HCC cells to promote cell proliferation, invasion, and migration. Conclusion: circ_0091579 promoted cell proliferation, migration, invasion, and glycolysis partially through miR-490-5p/CASC3 axis in HCC cells.
Collapse
Affiliation(s)
- Wei Liu
- Department of Laboratory, Luhe Hospital Affiliated to Capital Medical University, Beijing, China
| | - Changbin Yin
- Department of Laboratory, Luhe Hospital Affiliated to Capital Medical University, Beijing, China
| | - Yue Liu
- Department of Research and Development Center, DAAN Gene Co., Ltd. of Sun Yat-Sen University, Guangzhou, China
| |
Collapse
|
69
|
Circ-HIPK3 plays an active role in regulating myoblast differentiation. Int J Biol Macromol 2020; 155:1432-1439. [DOI: 10.1016/j.ijbiomac.2019.11.119] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 11/11/2019] [Accepted: 11/13/2019] [Indexed: 01/19/2023]
|
70
|
Beltrán-García J, Osca-Verdegal R, Nacher-Sendra E, Pallardó FV, García-Giménez JL. Circular RNAs in Sepsis: Biogenesis, Function, and Clinical Significance. Cells 2020; 9:cells9061544. [PMID: 32630422 PMCID: PMC7349763 DOI: 10.3390/cells9061544] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/23/2020] [Accepted: 06/24/2020] [Indexed: 01/08/2023] Open
Abstract
Sepsis is a life-threatening condition that occurs when the body responds to an infection that damages it is own tissues. The major problem in sepsis is rapid, vital status deterioration in patients, which can progress to septic shock with multiple organ failure if not properly treated. As there are no specific treatments, early diagnosis is mandatory to reduce high mortality. Despite more than 170 different biomarkers being postulated, early sepsis diagnosis and prognosis remain a challenge for clinicians. Recent findings propose that circular RNAs (circRNAs) may play a prominent role in regulating the patients’ immune system against different pathogens, including bacteria and viruses. Mounting evidence also suggests that the misregulation of circRNAs is an early event in a wide range of diseases, including sepsis. Despite circRNA levels being altered in sepsis, the specific mechanisms controlling the dysregulation of these noncoding RNAs are not completely elucidated, although many factors are known to affect circRNA biogenesis. Therefore, there is a need to explore the molecular pathways that lead to this disorder. This review describes the role of this new class of regulatory RNAs in sepsis and the feasibility of using circRNAs as diagnostic biomarkers for sepsis, opening up new avenues for circRNA-based medicine.
Collapse
Affiliation(s)
- Jesús Beltrán-García
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, 28029 Madrid, Spain; (J.B.-G.); (F.V.P.)
- Instituto de Investigación Sanitaria INCLIVA, 46010 Valencia, Spain;
- Departamento de Fisiología, Facultad de Medicina y Odontología, Universitat de València, 46010 València, Spain;
| | - Rebeca Osca-Verdegal
- Instituto de Investigación Sanitaria INCLIVA, 46010 Valencia, Spain;
- Departamento de Fisiología, Facultad de Medicina y Odontología, Universitat de València, 46010 València, Spain;
| | - Elena Nacher-Sendra
- Departamento de Fisiología, Facultad de Medicina y Odontología, Universitat de València, 46010 València, Spain;
| | - Federico V. Pallardó
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, 28029 Madrid, Spain; (J.B.-G.); (F.V.P.)
- Instituto de Investigación Sanitaria INCLIVA, 46010 Valencia, Spain;
- Departamento de Fisiología, Facultad de Medicina y Odontología, Universitat de València, 46010 València, Spain;
| | - José Luis García-Giménez
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, 28029 Madrid, Spain; (J.B.-G.); (F.V.P.)
- Instituto de Investigación Sanitaria INCLIVA, 46010 Valencia, Spain;
- Departamento de Fisiología, Facultad de Medicina y Odontología, Universitat de València, 46010 València, Spain;
- Correspondence:
| |
Collapse
|
71
|
Zhuang C, Huang X, Yu J, Gui Y. Circular RNA hsa_circ_0075828 promotes bladder cancer cell proliferation through activation of CREB1. BMB Rep 2020. [PMID: 31072448 PMCID: PMC7061208 DOI: 10.5483/bmbrep.2020.53.2.059] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Circular RNAs (circRNAs), one kind of non-coding RNA, have been reported as critical regulators for modulating gene expression in cancer. In this study, microarray analysis was used to screen circRNA expression profiles of bladder cancer (BC) 5637 cells, T24 cells and normal control SV-HUC-1 cells. The data from the microarray showed that hsa_circ_0075828 (named circCASC15) was most highly expressed in 5637 and T24 cells. circCASC15 was highly expressed in BC tissues and cells. Overexpression of circCASC15 was closely associated with BC tumor stage and promoted cell proliferation significantly in vitro and in vivo. Mechanistically, circCASC15 could act as miR-1224-5p sponge to activate the expression of CREB1 to promote cell proliferation in BC. In short, circCASC15 promotes cell proliferation in BC, which might be a new molecular target for BC diagnosis and therapy.
Collapse
Affiliation(s)
- Chengle Zhuang
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Institute of Urology, Peking University Shenzhen Hospital, Shenzhen-Peking University-the Hong Kong University of Science and Technology Medical Center, Shenzhen 518000, PR China
| | - Xinbo Huang
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Institute of Urology, Peking University Shenzhen Hospital, Shenzhen-Peking University-the Hong Kong University of Science and Technology Medical Center, Shenzhen 518000, PR China
| | - Jing Yu
- Department of Laboratory Medicine, Peking University Shenzhen Hospital, Shenzhen 518000, PR China
| | - Yaoting Gui
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Institute of Urology, Peking University Shenzhen Hospital, Shenzhen-Peking University-the Hong Kong University of Science and Technology Medical Center, Shenzhen 518000, PR China
| |
Collapse
|
72
|
Yang M, Huang W. Circular RNAs in nasopharyngeal carcinoma. Clin Chim Acta 2020; 508:240-248. [PMID: 32417214 DOI: 10.1016/j.cca.2020.05.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 05/13/2020] [Accepted: 05/13/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Nasopharyngeal carcinoma (NPC) is a geographical distributed epithelial tumor of head and neck, which is prevalent in east Africa and Asia, especially southern China. Moreover, NPC has an unfavorable clinical effect and is prone to metastasis at an advanced stage. Although the recovery rate of patients has been improved due to concurrent chemoradiotherapy, poor curative effects and low overall survival remain key issues. The precise mechanisms and pivotal regulators of NPC remain still unclear. To improve the therapeutic efficacy, we focused on related-NPC circular RNAs (circRNAs). CircRNAs are a unique type of endogenous non-coding RNAs (ncRNAs) with a covalent closed-loop structure. Their expression is rich, stable and conservative. Different circRNA have specific tissue and developmental stages and can be detected in body fluids. In addition, circRNAs are involved in multiple pathological processes, especially in cancers. In recent years, using high-throughput indicator technology and bioinformatics technology, a large number of circRNAs have been identified in NPC cells and verified to have biological functions and mechanisms of action. This article aims to provide a retrospective review of the latest research on the proliferation and migration of related-NPC circRNA. Specifically, we focused on the roles and mechanisms of circRNAs in the development and progression of NPC. CONCLUSION CircRNA can act as an oncogene or tumor suppressor gene and participate in NPC progression (e.g., proliferation, apoptosis, migration, and invasion). In short, circRNAs have potential as biomarkers for the diagnosis, prognosis and treatment of NPC.
Collapse
Affiliation(s)
- Mingxiu Yang
- Cancer Research Institute, Hengyang Medical College of University of South China, Hunan Province Key Laboratory of Tumor Cellular & Molecular Pathology (2016TP1015), Hengyang, Hunan Province, People's Republic of China
| | - Weiguo Huang
- Cancer Research Institute, Hengyang Medical College of University of South China, Hunan Province Key Laboratory of Tumor Cellular & Molecular Pathology (2016TP1015), Hengyang, Hunan Province, People's Republic of China.
| |
Collapse
|
73
|
The circRNA circSEPT9 mediated by E2F1 and EIF4A3 facilitates the carcinogenesis and development of triple-negative breast cancer. Mol Cancer 2020; 19:73. [PMID: 32264877 PMCID: PMC7137343 DOI: 10.1186/s12943-020-01183-9] [Citation(s) in RCA: 240] [Impact Index Per Article: 60.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 03/12/2020] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Increasing studies have shown that circRNA is closely related to the carcinogenesis and development of many cancers. However, biological functions and the underlying molecular mechanism of circRNAs in triple-negative breast cancer (TNBC) remain largely unclear so far. METHODS Here, we investigated the expression pattern of circRNAs in four pairs of TNBC tissues and paracancerous normal tissues using RNA-sequencing. The expression and prognostic significance of circSEPT9 were evaluated with qRT-PCR and in situ hybridization in two TNBC cohorts. The survival curves were drawn by the Kaplan-Meier method, and statistical significance was estimated with the log-rank test. A series of in vitro and in vivo functional experiments were executed to investigate the role of circSEPT9 in the carcinogenesis and development of TNBC. Mechanistically, we explored the potential regulatory effects of E2F1 and EIF4A3 on biogenesis of circSEPT9 with chromatin immunoprecipitation (ChIP), luciferase reporter and RNA immunoprecipitation (RIP) assays. Furthermore, fluorescent in situ hybridization (FISH), luciferase reporter and biotin-coupled RNA pull-down assays were implemented to verify the relationship between the circSEPT9 and miR-637 in TNBC. RESULTS Increased expression of circSEPT9 was found in TNBC tissues, which was positively correlated with advanced clinical stage and poor prognosis. Knockdown of circSEPT9 significantly suppressed the proliferation, migration and invasion of TNBC cells, induced apoptosis and autophagy in TNBC cells as well as inhibited tumor growth and metastasis in vivo. Whereas up-regulation of circSEPT9 exerted opposite effects. Further mechanism research demonstrated that circSEPT9 could regulate the expression of Leukemia Inhibitory Factor (LIF) via sponging miR-637 and activate LIF/Stat3 signaling pathway involved in progression of TNBC. More importantly, we discovered that E2F1 and EIF4A3 might promote the biogenesis of circSEPT9. CONCLUSIONS Our data reveal that the circSEPT9 mediated by E2F1 and EIF4A3 facilitates the carcinogenesis and development of triple-negative breast cancer through circSEPT9/miR-637/LIF axis. Therefore, circSEPT9 could be used as a potential prognostic marker and therapeutical target for TNBC.
Collapse
|
74
|
Chen H, Wang K, Pei D, Xu H. Appraising circular RNAs as novel biomarkers for the diagnosis and prognosis of gastric cancer: A pair-wise meta-analysis. J Clin Lab Anal 2020; 34:e23303. [PMID: 32196751 PMCID: PMC7439415 DOI: 10.1002/jcla.23303] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/21/2020] [Accepted: 02/22/2020] [Indexed: 12/24/2022] Open
Abstract
Background Circular RNAs (circRNAs), proven as single‐stranded closed RNA molecules, have been implicated in the onset and development of multiple cancers. This study aimed to summarize existing evidences regarding the clinicopathologic, diagnostic, and prognostic significances of circRNAs in gastric cancer (GC). Methods Eligible studies were identified using online databases. The quality of the included studies was judged, and patients' clinical characteristics, diagnostic data, and overall survival (OS) were extracted from the electronic medical record. Fisher's method was adopted to determine P values for clinicopathologic features. The diagnostic and prognostic data from all included studies were merged. Results Thirty eligible studies were comprised of 2687 GC patients were enrolled in the meta‐analyses. Altered expressions of circRNAs in GC tissues were significantly associated with worse clinicopathologic features. Abnormally expressed circRNAs yielded a pooled sensitivity of 0.76 (95% CI: 0.69‐0.81) and a specificity of 0.77 (95% CI: 0.70‐0.83) in distinguishing GC from noncancerous controls, which corresponded to an area under the curve (AUC) of 0.83. The survival analysis showed that the oncogenic circRNA signature could be an independent risk factor of OS (HR = 2.11, 95% CI: 1.60‐2.78, P = .000). Patients with down‐regulated circRNAs (tumor suppressor genes) presented a significantly shorter OS time than those with high‐level circRNAs (HR = 0.33, 95% CI: 0.27‐0.42, P = .000). Stratified analyses based on sample type, control source, circRNA expression status, and cutoff setting also produced robust results. Conclusions CircRNAs may play an important role as potential diagnostic and prognostic biomarkers of GC.
Collapse
Affiliation(s)
- Hongjun Chen
- Department of Clinical Laboratory, Anyang Tumor Hospital, The Fourth Affiliated Hospital of Henan University of Science and Technology, Anyang, China
| | - Kun Wang
- Department of Clinical Laboratory, Huanghe Sanmenxia Hospital, Sanmenxia, China
| | - Dongxu Pei
- Department of Clinical Laboratory, Henan Province Hospital of TCM, Zhengzhou, China
| | - Haisheng Xu
- Department of Clinical Laboratory, Anyang Tumor Hospital, The Fourth Affiliated Hospital of Henan University of Science and Technology, Anyang, China
| |
Collapse
|
75
|
Prolactin-Responsive Circular RNA circHIPK3 Promotes Proliferation of Mammary Epithelial Cells from Dairy Cow. Genes (Basel) 2020; 11:genes11030336. [PMID: 32245109 PMCID: PMC7141114 DOI: 10.3390/genes11030336] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 03/18/2020] [Accepted: 03/18/2020] [Indexed: 12/15/2022] Open
Abstract
The highly expressed circHIPK3 is a circular RNA that has been previously reported to regulate the growth of human cells. In this study, we found an increased expression of circHIPK3 in bovine mammary epithelial cells treated with prolactin (PRL) in high-throughput sequencing data. Thus, we further investigated the effect of circHIPK3 on the proliferation and differentiation of mammary epithelial cells. We used qRT-PCR/Cell Counting Kit-8 (CCK-8) and a Western blotting analysis to evaluate the effects on cell proliferation. We found that circHIPK3 promotes the proliferation of mammary epithelial cells. The STAT5 signaling pathway was previously associated with the prolactin response and when the STAT5 was suppressed, the expression of circHIPK3 decreased. The results suggest that the response to prolactin and the associated STAT5 signaling pathway affect the expression of circHIPK3, which subsequently affects the proliferation of mammary epithelial cells in dairy cows.
Collapse
|
76
|
Ostolaza A, Blanco-Luquin I, Urdánoz-Casado A, Rubio I, Labarga A, Zandio B, Roldán M, Martínez-Cascales J, Mayor S, Herrera M, Aymerich N, Gallego J, Muñoz R, Mendioroz M. Circular RNA expression profile in blood according to ischemic stroke etiology. Cell Biosci 2020; 10:34. [PMID: 32175077 PMCID: PMC7063791 DOI: 10.1186/s13578-020-00394-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 02/24/2020] [Indexed: 02/03/2023] Open
Abstract
Background The discovery of novel biomarkers of stroke etiology would be most helpful in management of acute ischemic stroke patients. Recently, circular RNAs (circRNAs) have been proposed as candidate biomarkers of neurological conditions due to its high stability. circRNAs function as sponges, sequestering miRNAs and are involved in most relevant biological functions. Our aim was to identify differentially expressed circRNAs in acute ischemic stroke patients according to stroke etiology. Methods A comprehensive expression profile of blood circRNAs was conducted by Arraystar Human circRNA arrays (13,617 probes) on a discovery cohort of 30 stroke patients with different stroke etiologies by TOAST classification. Real-time quantitative PCR (RT-qPCR) was used to validate array results in a cohort of 50 stroke patients. Functional in silico analysis was performed to identify potential interactions with microRNAs (miRNAs) and pathways underlying deregulated circRNAs. Results A set of 60 circRNAs were found to be upregulated in atherotrombotic versus cardioembolic strokes (fold-change > = 1.5 and p-value ≤ 0.05). Differential expression of hsa_circRNA_102488, originated from UBA52 gene, was replicated in the validation cohort. RNA-binding proteins (RBPs) sites of hsa_circRNA_102488 clustered around AGO2 and FUS proteins. Further functional analysis revealed interactions between deregulated circRNAs and a set of miRNAs involved in stroke-related pathways, such as fatty acid biogenesis or lysine degradation. Conclusion Different stroke subtypes show specific profiles of circRNAs expression. circRNAs may serve as a new source of biomarkers of stroke etiology in acute ischemic stroke patients.
Collapse
Affiliation(s)
- Aiora Ostolaza
- 1Department of Neurology, Complejo Hospitalario de Navarra-IdiSNA (Navarra Institute for Health Research), 31008 Pamplona, Navarra Spain
| | - Idoia Blanco-Luquin
- Neuroepigenetics Laboratory-Navarrabiomed-IdiSNA, Complejo Hospitalario de Navarra, Universidad Pública de Navarra (UPNA), IdiSNA (Navarra Institute for Health Research), C/Irunlarrea, 3, 31008 Pamplona, Navarra Spain
| | - Amaya Urdánoz-Casado
- Neuroepigenetics Laboratory-Navarrabiomed-IdiSNA, Complejo Hospitalario de Navarra, Universidad Pública de Navarra (UPNA), IdiSNA (Navarra Institute for Health Research), C/Irunlarrea, 3, 31008 Pamplona, Navarra Spain
| | - Idoya Rubio
- 1Department of Neurology, Complejo Hospitalario de Navarra-IdiSNA (Navarra Institute for Health Research), 31008 Pamplona, Navarra Spain
| | - Alberto Labarga
- 4Bioinformatics Unit, Navarrabiomed, Public University of Navarre (UPNA), IdiSNA (Navarra Institute for Health Research), C/Irunlarrea, 3, 31008 Pamplona, Navarra Spain
| | - Beatriz Zandio
- 1Department of Neurology, Complejo Hospitalario de Navarra-IdiSNA (Navarra Institute for Health Research), 31008 Pamplona, Navarra Spain.,3Stroke Unit, Department of Neurology, Complejo Hospitalario de Navarra- IdiSNA (Navarra Institute for Health Research), 31008 Pamplona, Navarra Spain
| | - Miren Roldán
- Neuroepigenetics Laboratory-Navarrabiomed-IdiSNA, Complejo Hospitalario de Navarra, Universidad Pública de Navarra (UPNA), IdiSNA (Navarra Institute for Health Research), C/Irunlarrea, 3, 31008 Pamplona, Navarra Spain
| | - Judith Martínez-Cascales
- Neuroepigenetics Laboratory-Navarrabiomed-IdiSNA, Complejo Hospitalario de Navarra, Universidad Pública de Navarra (UPNA), IdiSNA (Navarra Institute for Health Research), C/Irunlarrea, 3, 31008 Pamplona, Navarra Spain
| | - Sergio Mayor
- 1Department of Neurology, Complejo Hospitalario de Navarra-IdiSNA (Navarra Institute for Health Research), 31008 Pamplona, Navarra Spain.,3Stroke Unit, Department of Neurology, Complejo Hospitalario de Navarra- IdiSNA (Navarra Institute for Health Research), 31008 Pamplona, Navarra Spain
| | - María Herrera
- 1Department of Neurology, Complejo Hospitalario de Navarra-IdiSNA (Navarra Institute for Health Research), 31008 Pamplona, Navarra Spain.,3Stroke Unit, Department of Neurology, Complejo Hospitalario de Navarra- IdiSNA (Navarra Institute for Health Research), 31008 Pamplona, Navarra Spain
| | - Nuria Aymerich
- 1Department of Neurology, Complejo Hospitalario de Navarra-IdiSNA (Navarra Institute for Health Research), 31008 Pamplona, Navarra Spain.,3Stroke Unit, Department of Neurology, Complejo Hospitalario de Navarra- IdiSNA (Navarra Institute for Health Research), 31008 Pamplona, Navarra Spain
| | - Jaime Gallego
- 1Department of Neurology, Complejo Hospitalario de Navarra-IdiSNA (Navarra Institute for Health Research), 31008 Pamplona, Navarra Spain.,3Stroke Unit, Department of Neurology, Complejo Hospitalario de Navarra- IdiSNA (Navarra Institute for Health Research), 31008 Pamplona, Navarra Spain
| | - Roberto Muñoz
- 1Department of Neurology, Complejo Hospitalario de Navarra-IdiSNA (Navarra Institute for Health Research), 31008 Pamplona, Navarra Spain.,3Stroke Unit, Department of Neurology, Complejo Hospitalario de Navarra- IdiSNA (Navarra Institute for Health Research), 31008 Pamplona, Navarra Spain
| | - Maite Mendioroz
- 1Department of Neurology, Complejo Hospitalario de Navarra-IdiSNA (Navarra Institute for Health Research), 31008 Pamplona, Navarra Spain.,Neuroepigenetics Laboratory-Navarrabiomed-IdiSNA, Complejo Hospitalario de Navarra, Universidad Pública de Navarra (UPNA), IdiSNA (Navarra Institute for Health Research), C/Irunlarrea, 3, 31008 Pamplona, Navarra Spain
| |
Collapse
|
77
|
Tran AM, Chalbatani GM, Berland L, Cruz De Los Santos M, Raj P, Jalali SA, Gharagouzloo E, Ivan C, Dragomir MP, Calin GA. A New World of Biomarkers and Therapeutics for Female Reproductive System and Breast Cancers: Circular RNAs. Front Cell Dev Biol 2020; 8:50. [PMID: 32211400 PMCID: PMC7075436 DOI: 10.3389/fcell.2020.00050] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 01/20/2020] [Indexed: 12/12/2022] Open
Abstract
As one of the most recently (re)discovered types of non-coding RNAs (ncRNA), circular RNAs (circRNAs) differentiate from other ncRNAs by a specific biogenesis, high stability, and distinct functions. The biogenesis of circRNAs can be categorized into three mechanisms that permit the back-splicing reaction: exon-skipping, pairing of neighboring introns, and dimerization of RNA-binding proteins. Regarding their stability, circRNAs have no free ends, specific to linear RNA molecules, prompting a longer half-life and resistance to exonuclease-mediated activity by RNase R, bypassing the common RNA turnover process. Regarding their functions, circular transcripts can be categorized into four broad roles: miRNA sponging, protein binding, regulation of transcription, and coding for proteins and peptides. Female reproductive system (including mainly ovarian, corpus, and cervix uteri cancers) and breast cancers are the primary causes of death in women worldwide, accounting for over 1,212,772 deaths in 2018. We consider that a better understanding of the molecular pathophysiology through the study of coding and non-coding RNA regulators could improve the diagnosis and therapeutics of these cancers. Developments in the field of circRNA in regard to breast or gynecological cancers are recent, with most circRNA-related discoveries having been made in the last 2 years. Therefore, in this review we summarize the newly detected roles of circRNAs in female reproductive system (cervical cancer, ovarian cancer, and endometrial cancer) and breast cancers. We argue that circRNAs can become essential elements of the diagnostic and therapeutic tools for female reproductive system cancers in the future.
Collapse
Affiliation(s)
- Anh M Tran
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Ghanbar Mahmoodi Chalbatani
- Cancer Research Center, Cancer Institute of Iran, Tehran University of Medical Sciences, Tehran, Iran.,Department of Medical Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Lea Berland
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Mireia Cruz De Los Santos
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Priyank Raj
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Seyed Amir Jalali
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Elahe Gharagouzloo
- Cancer Research Center, Cancer Institute of Iran, Tehran University of Medical Sciences, Tehran, Iran.,Department of Medical Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Cristina Ivan
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, United States.,Center for RNA Interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Mihnea P Dragomir
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, United States.,Department of Surgery, Fundeni Clinical Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - George A Calin
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, United States.,Center for RNA Interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| |
Collapse
|
78
|
Wan B, Liu B, Lv C. Progress of research into circular RNAs in urinary neoplasms. PeerJ 2020; 8:e8666. [PMID: 32140311 PMCID: PMC7045884 DOI: 10.7717/peerj.8666] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 01/30/2020] [Indexed: 12/26/2022] Open
Abstract
Circular RNAs (circRNAs) are a large class of endogenous RNA that form a covalently closed continuous loop without 5′ or 3′ tails and are diffusely expressed in mammalian cells. Through the development of high-throughput sequencing, microarray, and bioinformatics analyses, recent studies have shown that the expression of circRNAs is dysregulated in human tumor tissues and cells, as well as in the blood of patients, and closely correlates with the development of tumors. circRNAs can regulate the progression of tumors through various mechanisms. An increasing number of studies have shown that circRNAs may play critical roles in the early diagnosis, targeted therapy, and prognostic prediction of cancer as biomarkers or therapeutic targets. This review briefly describes the definitions and functions of circRNAs, and the main content includes the most recent progress in research into their function, regulation, and clinical relevance to bladder, renal, and prostate cancers. We also provide some novel ideas regarding the treatment of these diseases.
Collapse
Affiliation(s)
- Bangbei Wan
- Department of Urology, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou, China
| | - Bo Liu
- Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Cai Lv
- Department of Urology, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou, China
| |
Collapse
|
79
|
Liu X, Zhang L, Wang JH, Zeng H, Zou J, Tan W, Zhao H, He Y, Shi J, Yoshida S, Li Y, Zhou Y. Investigation of circRNA Expression Profiles and Analysis of circRNA-miRNA-mRNA Networks in an Animal (Mouse) Model of Age-Related Macular Degeneration. Curr Eye Res 2020; 45:1173-1180. [PMID: 31979995 DOI: 10.1080/02713683.2020.1722179] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSES To (i) identify dysregulated circular RNAs (circRNAs) and (ii) elucidate their potential functions in an animal (mouse) model of choroidal neovascularization (CNV), a prominent feature of neovascular age-related macular degeneration (AMD). METHODS Expression profiles for circRNA were identified by microarray analysis. Selected circRNAs were confirmed by quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR). Bioinformatic analyses of identified circRNAs were performed to predict (i) circRNA/microRNA interactions and (ii) occurrence of competing endogenous RNA (ceRNA) networks. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses were applied to predict both the biological functions and potential pathways of the altered parental genes involved in CNV. RESULTS Microarray analysis indicated that 100 circRNAs in RPE-choroid-sclera complexes from CNV mice were significantly altered compared with those from control mice (fold change≥1.5, p < .05). Of these, six were validated by qRT-PCR, and included up-regulated mmu_circRNA_20332 and mmu_circRNA_19388, and down-regulated mmu_circRNA_36481, mmu_circRNA_006555, mmu_circRNA_012588, and mmu_circRNA_005578. GO analysis revealed that the altered parental genes involved in ceRNA networks were mostly enriched in immune system processes and portions of neurons. KEGG analysis revealed that these altered parental genes were also amplified in extracellular matrix (ECM)-receptor interactions, chemokine signaling pathways, and advanced glycation end-product (AGE)-receptors for advanced glycation end-product (RAGE) signaling pathways in diabetic complications. CONCLUSION The study identified statistically significant differences between CNV-mouse circRNAs and control mouse circRNAs, suggesting that circRNAs play vital roles in the pathogenesis of CNV. It is, therefore, reasonable to consider circRNAs as potential therapeutic targets for regulating CNV in AMD patients.
Collapse
Affiliation(s)
- Xiao Liu
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University , Changsha, China.,Hunan Clinical Research Center of Ophthalmic Disease , Changsha, China
| | - Liwei Zhang
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University , Changsha, China.,Hunan Clinical Research Center of Ophthalmic Disease , Changsha, China
| | - Jiang-Hui Wang
- Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital , East Melbourne, Australia.,Ophthalmology, Department of Surgery, University of Melbourne , East Melbourne, Australia
| | - Huilan Zeng
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University , Changsha, China.,Hunan Clinical Research Center of Ophthalmic Disease , Changsha, China
| | - Jingling Zou
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University , Changsha, China.,Hunan Clinical Research Center of Ophthalmic Disease , Changsha, China
| | - Wei Tan
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University , Changsha, China.,Hunan Clinical Research Center of Ophthalmic Disease , Changsha, China
| | - Han Zhao
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University , Changsha, China.,Hunan Clinical Research Center of Ophthalmic Disease , Changsha, China
| | - Yan He
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University , Changsha, China.,Hunan Clinical Research Center of Ophthalmic Disease , Changsha, China
| | - Jingming Shi
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University , Changsha, China.,Hunan Clinical Research Center of Ophthalmic Disease , Changsha, China
| | - Shigeo Yoshida
- Department of Ophthalmology, Kurume University School of Medicine , Kurume, Japan
| | - Yunping Li
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University , Changsha, China.,Hunan Clinical Research Center of Ophthalmic Disease , Changsha, China
| | - Yedi Zhou
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University , Changsha, China.,Hunan Clinical Research Center of Ophthalmic Disease , Changsha, China
| |
Collapse
|
80
|
Zhang C, Ma L, Niu Y, Wang Z, Xu X, Li Y, Yu Y. Circular RNA in Lung Cancer Research: Biogenesis, Functions, and Roles. Int J Biol Sci 2020; 16:803-814. [PMID: 32071550 PMCID: PMC7019141 DOI: 10.7150/ijbs.39212] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 12/18/2019] [Indexed: 12/24/2022] Open
Abstract
Lung cancer is one of the most common and deadly malignancies worldwide, in spite of advances in targeted therapy in recent years. An effective strategy for lung cancer prevention remains a major problem. Advances in next-generation sequencing have helped in understanding the RNA and identifying novel circular RNAs (circRNAs) that may have a broad impact on the early diagnosis and treatment of lung cancer. The circRNAs, exhibiting spatiotemporal-specific expression, are stable and conserved and present diverse biological functions in the normal and diseased states, including cancer. In this review, we summarize the recent advances in elucidating the functional role of circRNAs in lung cancer pathogenesis and discuss their potential mechanisms.
Collapse
Affiliation(s)
- Congcong Zhang
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200071, P.R. China.,Institute for Thoracic Oncology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, 200030, P.R. China
| | - Lifang Ma
- Institute for Thoracic Oncology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, 200030, P.R. China
| | - Yongjie Niu
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200071, P.R. China.,Institute for Thoracic Oncology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, 200030, P.R. China
| | - Zhixian Wang
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200071, P.R. China.,Institute for Thoracic Oncology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, 200030, P.R. China
| | - Xin Xu
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200071, P.R. China.,Institute for Thoracic Oncology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, 200030, P.R. China
| | - Yan Li
- Department of Oncology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai,200071, P.R. China
| | - Yongchun Yu
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200071, P.R. China.,Institute for Thoracic Oncology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, 200030, P.R. China
| |
Collapse
|
81
|
Guria A, Sharma P, Natesan S, Pandi G. Circular RNAs-The Road Less Traveled. Front Mol Biosci 2020; 6:146. [PMID: 31998746 PMCID: PMC6965350 DOI: 10.3389/fmolb.2019.00146] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 12/03/2019] [Indexed: 12/20/2022] Open
Abstract
Circular RNAs are the most recent addition in the non-coding RNA family, which has started to gain recognition after a decade of obscurity. The first couple of reports that emerged at the beginning of this decade and the amount of evidence that has accumulated thereafter has, however, encouraged RNA researchers to navigate further in the quest for the exploration of circular RNAs. The joining of 5′ and 3′ ends of RNA molecules through backsplicing forms circular RNAs during co-transcriptional or post-transcriptional processes. These molecules are capable of effectively sponging microRNAs, thereby regulating the cellular processes, as evidenced by numerous animal and plant systems. Preliminary studies have shown that circular RNA has an imperative role in transcriptional regulation and protein translation, and it also has significant therapeutic potential. The high stability of circular RNA is rendered by its closed ends; they are nevertheless prone to degradation by circulating endonucleases in serum or exosomes or by microRNA-mediated cleavage due to their high complementarity. However, the identification of circular RNAs involves diverse methodologies and the delineation of its possible role and mechanism in the regulation of cellular and molecular architecture has provided a new direction for the continuous research into circular RNA. In this review, we discuss the possible mechanism of circular RNA biogenesis, its structure, properties, degradation, and the growing amount of evidence regarding the detection methods and its role in animal and plant systems.
Collapse
Affiliation(s)
- Ashirbad Guria
- Department of Plant Biotechnology, School of Biotechnology, Madurai Kamaraj University, Madurai, India
| | - Priyanka Sharma
- Department of Genetic Engineering, School of Biotechnology, Madurai Kamaraj University, Madurai, India
| | - Sankar Natesan
- Department of Genetic Engineering, School of Biotechnology, Madurai Kamaraj University, Madurai, India
| | - Gopal Pandi
- Department of Plant Biotechnology, School of Biotechnology, Madurai Kamaraj University, Madurai, India
| |
Collapse
|
82
|
Zhou SY, Chen W, Yang SJ, Li J, Zhang JY, Zhang HD, Zhong SL, Tang JH. Circular RNA circVAPA regulates breast cancer cell migration and invasion via sponging miR-130a-5p. Epigenomics 2020; 12:303-317. [PMID: 31920104 DOI: 10.2217/epi-2019-0124] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Aim: We aimed to explore the roles of circular RNA, circVAPA in regulating cell migration and invasion of breast cancer. Materials & methods: CircVAPA expression was detected in breast cancer tissues and cells. The role of circVAPA was evaluated by MTT assay, wound-healing and transwell assay. The relationship between circVAPA and miR-130a-5p and the location of circVAPA were explored. Results: We discovered that circVAPA was dysregulated in breast cancer tissues and cells. Ectopic circVAPA regulated breast cancer migration, invasion and proliferation. CircVAPA was mainly expressed in the cytoplasm and could act as a miRNA sponge for miR-130a-5p, but did not regulate its parental gene. Conclusion: CircVAPA may promote migration and invasion capacity of breast cancer via harboring miR-130a-5p.
Collapse
Affiliation(s)
- Si-Ying Zhou
- The First Clinical Medical College, Nanjing University of Chinese Medicine, Xianlin Road 138, Nanjing 210023, PR China
| | - Wei Chen
- Department of Head & Neck Surgery, The Affiliated Cancer Hospital of Nanjing Medical University & Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research, Baiziting 42, Nanjing 210029, PR China
| | - Su-Jin Yang
- The First Clinical School of Nanjing Medical University, Nanjing 210029, PR China
| | - Jian Li
- Department of General Surgery, The Affiliated Cancer Hospital of Nanjing Medical University & Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research, Baiziting 42, Nanjing 210029, PR China
| | - Jun-Ying Zhang
- The First Clinical School of Nanjing Medical University, Nanjing 210029, PR China
| | - He-da Zhang
- Department of General Surgery, School of Medicine, Southeast University, 87 Ding Jia Qiao, Nanjing, 210009, PR China
| | - Shan-Liang Zhong
- Center of Clinical Laboratory Science, The Affiliated Cancer Hospital of Nanjing Medical University & Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research, Baiziting 42, Nanjing 210029, PR China
| | - Jin-Hai Tang
- The First Clinical Medical College, Nanjing University of Chinese Medicine, Xianlin Road 138, Nanjing 210023, PR China.,Department of General Surgery, The First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, PR China
| |
Collapse
|
83
|
ElKhouly AM, Youness RA, Gad MZ. MicroRNA-486-5p and microRNA-486-3p: Multifaceted pleiotropic mediators in oncological and non-oncological conditions. Noncoding RNA Res 2020; 5:11-21. [PMID: 31993547 PMCID: PMC6971376 DOI: 10.1016/j.ncrna.2020.01.001] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 11/19/2019] [Accepted: 01/05/2020] [Indexed: 02/06/2023] Open
Abstract
Despite historically known as "junk" DNA, nowadays non-coding RNA transcripts (ncRNAs) are considered as fundamental players in various physiological and pathological conditions. Nonetheless, any alteration in their expression level has been reported to be directly associated with the incidence and aggressiveness of several diseases. MicroRNAs (miRNAs) are the well-studied members of the ncRNAs family. Several reports have highlighted their crucial roles in the post-transcriptional manipulation of several signaling pathways in different pathological conditions. In this review, our main focus is the multifaceted microRNA-486 (miR-486). miR-486-5p and miR-486-3p have been reported to have central roles in several types oncological and non-oncological conditions such as lung, liver, breast cancers and autism, intervertebral disc degeneration and metabolic syndrome, respectively. Moreover, we spotted the light onto the pleiotropic role of miR-486-5p in acting as competing endogenous RNA with other members of ncRNAs family such as long non-coding RNAs.
Collapse
Affiliation(s)
- Aisha M ElKhouly
- Biochemistry Department, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, Egypt
| | - R A Youness
- Pharmaceutical Biology Department, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, Egypt
| | - M Z Gad
- Biochemistry Department, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, Egypt
| |
Collapse
|
84
|
Fan J, Quan W, Li GB, Hu XH, Wang Q, Wang H, Li XP, Luo X, Feng Q, Hu ZJ, Feng H, Pu M, Zhao JQ, Huang YY, Li Y, Zhang Y, Wang WM. circRNAs Are Involved in the Rice- Magnaporthe oryzae Interaction. PLANT PHYSIOLOGY 2020; 182:272-286. [PMID: 31628150 PMCID: PMC6945833 DOI: 10.1104/pp.19.00716] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 10/07/2019] [Indexed: 05/03/2023]
Abstract
Circular RNAs (circRNAs) play roles in various biological processes, but their functions in the rice (Oryza sativa) response to Magnaporthe oryzae remain elusive. Here, we demonstrate that circRNAs are involved in the rice-M. oryzae interaction using comparative circRNA-sequencing and transgenic approaches. We identified 2932 high-confidence circRNAs from young leaves of the blast-resistant accession International Rice Blast Line Pyricularia-Kanto51-m-Tsuyuake (IR25) and the blast-susceptible accession Lijiangxin Tuan Heigu (LTH) under M oryzae-infected or uninfected conditions; 636 were detected specifically upon M oryzae infection. The circRNAs in IR25 were significantly more diverse than those in LTH, especially under M. oryzae infection. Particularly, the number of circRNAs generated per parent gene was much higher in IR25 than in LTH and increased in IR25 but decreased in LTH upon M. oryzae infection. The higher diversity of circRNAs in IR25 was further associated with more frequent 3' and 5' alternative back-splicing and usage of complex splice sites. Moreover, a subset of circRNAs was differentially responsive to M oryzae in IR25 and LTH. We further confirmed that circR5g05160 promotes rice immunity against M oryzae Therefore, our data indicate that circRNA diversity is associated with different responses to M oryzae infection in rice and provide a starting point to investigate a new layer of regulation in the rice-M oryzae interaction.
Collapse
Affiliation(s)
- Jing Fan
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
| | - Weili Quan
- Center for Genome Analysis, ABLife Inc., Wuhan 430075, Hubei, China
| | - Guo-Bang Li
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
| | - Xiao-Hong Hu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
| | - Qi Wang
- Center for Genome Analysis, ABLife Inc., Wuhan 430075, Hubei, China
| | - He Wang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
| | - Xu-Pu Li
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
| | - Xiaotian Luo
- Laboratory for Genome Regulation and Human Health, ABLife Inc., Wuhan 430075, Hubei, China
| | - Qin Feng
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
| | - Zi-Jin Hu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
| | - Hui Feng
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
| | - Mei Pu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
| | - Ji-Qun Zhao
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
| | - Yan-Yan Huang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
| | - Yan Li
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
| | - Yi Zhang
- Center for Genome Analysis, ABLife Inc., Wuhan 430075, Hubei, China
| | - Wen-Ming Wang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
| |
Collapse
|
85
|
Li T, Sun X, Chen L. Exosome circ_0044516 promotes prostate cancer cell proliferation and metastasis as a potential biomarker. J Cell Biochem 2019; 121:2118-2126. [PMID: 31625175 DOI: 10.1002/jcb.28239] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 11/15/2018] [Indexed: 12/15/2022]
Abstract
Circular RNAs (circRNAs) are important regulators in cancer growth and progression. Exosomes carry various molecules including RNA, protein, and lipid from one cell to another cell. But the role of circRNAs from the exosomes from prostate cancer patients are not elucidated. In this study, circ_0044516 was found upregulated in prostate cancer and the roles and molecular mechanism of Hsa_circ_0044516 (circ_0044516) was investigated. Firstly, the exosomes of prostate cancer patients were collected for human circRNAs microarray to screen the circRNA expression profile. There were 35 significantly expressed circRNAs with more than fivefolds from microarray analysis. Circ_0044516 was verified to be significantly upregulated in the exosomes from prostate cancer patients and the cell lines. Further investigation demonstrated that circ_0044516 downregulation inhibited the proliferation and metastasis of prostate cancer cells. By bioinformatics and luciferase reporter assays, circ_0044516 was verified to downregulate miR-29a-3p expression and negatively related to miR-29a-3p expression levels in prostate cancer. In a summary, the study indicated that circ_0044516 played an important role in prostate cancer cell survival and metastasis, which suggested that an oncogenic role of circ_0044516 in prostate cancer.
Collapse
Affiliation(s)
- Tian Li
- Department of Urology, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Minimally Invasive Technique and Product Translational Center, Guangzhou Medical University, Guangzhou, China
| | - Xiangzhou Sun
- Department of Urology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Liheng Chen
- Department of Biomedical Engineering, Jinan University, Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Guangzhou, China
| |
Collapse
|
86
|
Zhao R, Ni J, Lu S, Jiang S, You L, Liu H, Shou J, Zhai C, Zhang W, Shao S, Yang X, Pan H, Han W. CircUBAP2-mediated competing endogenous RNA network modulates tumorigenesis in pancreatic adenocarcinoma. Aging (Albany NY) 2019; 11:8484-8501. [PMID: 31584877 PMCID: PMC6814619 DOI: 10.18632/aging.102334] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 09/22/2019] [Indexed: 12/24/2022]
Abstract
We investigated the role of the competing endogenous RNA (ceRNA) network in the development and progression of pancreatic adenocarcinoma (PAAD). We analyzed the expression profiles of PAAD and normal pancreatic tissues from multiple GEO databases and identified 457 differentially expressed circular RNAs (DEcircRNAs), 19 microRNAs (DEmiRNAs) and 1993 mRNAs (DEmRNAs). We constructed a ceRNA network consisting of 4 DEcircRNAs, 3 DEmiRNAs and 149 DEmRNAs that regulates the NF-kappa B, PI3K-Akt, and Wnt signaling pathways. We then identified and validated five hub genes, CXCR4, HIF1A, ZEB1, SDC1 and TWIST1, which are overexpressed in PAAD tissues. The expression of CXCR4, HIF1A, ZEB1, and SDC1 in PAAD was regulated by circ-UBAP2 and hsa-miR-494. The expression of CXCR4 and ZEB1 correlated with the levels of M2 macrophages, T-regulatory cells (Tregs) and exhausted T cells in the PAAD tissues. The expression of CXCR4 and ZEB1 positively correlated with the expression of CTLA-4 and PD-1. This suggests that CXCR4 and ZEB1 proteins inhibit antigen presentation and promote immune escape mechanisms in PAAD cells. In summary, our data suggest that the circUBAP2-mediated ceRNA network modulates PAAD by regulating the infiltration and function of immune cells.
Collapse
Affiliation(s)
- Rongjie Zhao
- Department of Medical Oncology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou 310000, Zhejiang, China
| | - Junjie Ni
- The First Clinical College, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China
| | - Si Lu
- The Fourth Clinical College, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China
| | - Sujing Jiang
- Department of Radiation and Medical Oncology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, China
| | - Liangkun You
- Department of Medical Oncology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou 310000, Zhejiang, China
| | - Hao Liu
- Department of Medical Oncology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou 310000, Zhejiang, China
| | - Jiawei Shou
- Department of Medical Oncology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou 310000, Zhejiang, China
| | - Chongya Zhai
- Department of Medical Oncology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou 310000, Zhejiang, China
| | - Wei Zhang
- Department of Medical Oncology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou 310000, Zhejiang, China
| | - Shengpeng Shao
- The Second Clinical College, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China
| | - Xinmei Yang
- Department of Oncology, The First Affiliated Hospital of Jiaxing University, Jiaxing 314000, Zhejiang, China
| | - Hongming Pan
- Department of Medical Oncology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou 310000, Zhejiang, China
| | - Weidong Han
- Department of Medical Oncology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou 310000, Zhejiang, China
| |
Collapse
|
87
|
Wang W, Wang J, Zhang X, Liu G. Serum circSETDB1 is a promising biomarker for predicting response to platinum-taxane-combined chemotherapy and relapse in high-grade serous ovarian cancer. Onco Targets Ther 2019; 12:7451-7457. [PMID: 31686850 PMCID: PMC6752657 DOI: 10.2147/ott.s220700] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 08/22/2019] [Indexed: 12/12/2022] Open
Abstract
Purpose Circular RNAs (circRNAs) are emerging as promising biomarkers for various human malignancies. However, the application of circRNAs as non-invasive biomarkers in high-grade serous ovarian cancer (SOC) remains to be elucidated. Here, we aim to investigate the feasibility of using serum circSETDB1, a tumor-promoting circRNA generated from the SET domain bifurcated histone lysine methyltransferase 1 (SETDB1), known to be upregulated in SOC,as a biomarker for detecting SOC progression, predicting relapse, and evaluating the effectiveness of SOC treatment. Methods Serum circSETDB1 levels were measured using quantitative real-time RCR in 60 SOC patients (18 primary chemoresistance, 42 primary chemosensitive) and 60 healthy volunteers. Progression-free survival curve was calculated by Kaplan-Meier analysis. Diagnostic value was analyzed using receiver operating characteristic curve (ROC) method. Results Serum circSETDB1 expression is upregulated in SOC patients. Higher levels of circSETDB1 are positively associated with advanced clinical stage, lymph node metastasis of SOC patients. Notably, serum circSETDB1 levels are significantly increased in primary chemoresistance patients. Patients with higher levels of circSETDB1 have a shorter progression-free survival time. In addition, diagnostic value analyses revealed that serum circSETDB1 can distinguish patients with SOC from healthy volunteers as well as patients with primary chemoresistance from those with primary chemosensitivity. Conclusion Our data suggest that serum circSETDB1 may serve as a novel non-invasive biomarker for detecting SOC progression and predicting response to chemotherapy and relapse in high-grade serous ovarian cancer.
Collapse
Affiliation(s)
- Wei Wang
- Department of Obstetrics and Gynecology, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, Henan 450003, People's Republic of China
| | - Jinshu Wang
- Department of Center for Clinical Single Cell Biomedicine, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, Henan 450003, People's Republic of China.,Department of Oncology, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, Henan 450003, People's Republic of China
| | - Xinzhong Zhang
- Department of Center for Clinical Single Cell Biomedicine, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, Henan 450003, People's Republic of China.,Department of Oncology, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, Henan 450003, People's Republic of China
| | - Gang Liu
- Department of Center for Clinical Single Cell Biomedicine, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, Henan 450003, People's Republic of China.,Department of Oncology, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, Henan 450003, People's Republic of China
| |
Collapse
|
88
|
Oswiecimska J, Dawidziuk M, Gambin T, Ziora K, Marek M, Rzonca S, Guilbride DL, Jhangiani SN, Obuchowicz A, Sikora A, Lupski JR, Wiszniewski W, Gawlinski P. A Patient with Berardinelli-Seip Syndrome, Novel AGPAT2 Splicesite Mutation and Concomitant Development of Non-diabetic Polyneuropathy. J Clin Res Pediatr Endocrinol 2019; 11:319-326. [PMID: 30563316 PMCID: PMC6745459 DOI: 10.4274/jcrpe.galenos.2018.2018.0227] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 12/17/2018] [Indexed: 12/01/2022] Open
Abstract
Primary polyneuropathy in the context of Seip-Berardinelli type 1 seipinopathy, or congenital generalized lipodystrophy type 1 (CGL1) has not been previously reported. We report the case history of a 27 year old female CGL1 patient presenting with an unusual additional development of non-diabetic peripheral neuropathy and learning disabilities in early adolescence. Whole exome sequencing (WES) of the patient genome identified a novel variant, homozygous for a 52 bp intronic deletion in the AGPAT2 locus, coding for 1-acylglycerol-3-phosphate O-acyltransferase 2, which is uniquely associated with CGL1 seipinopathies, with no molecular evidence for dual diagnosis. Functional studies using RNA isolated from patient peripheral blood leucocytes showed abnormal RNA splicing resulting in the loss of 25 amino acids from the patient AGPAT2 protein coding sequence. Stability and transcription levels for the misspliced AGPAT2 mRNA in our patient nonetheless remained normal. Any AGPAT2 protein produced in our patient is therefore likely to be dysfunctional. However, formal linkage of this deletion to the neuropathy observed remains to be shown. The classical clinical presentation of a patient with AGPAT2-associated lipodystrophy shows normal cognition and no development of polyneuropathy. Cognitive disabilities and polyneuropathy are features associated exclusively with clinical CGL type 2 arising from seipin (BSCL2) gene mutations. This case study suggests that in some genetic contexts, AGPAT2 mutations can also produce phenotypes with primary polyneuropathy.
Collapse
Affiliation(s)
- Joanna Oswiecimska
- Medical University of Silesia in Katowice, Department of Pediatrics in Zabrze, Silesia, Poland
| | - Mateusz Dawidziuk
- Institute of Mother and Child, Department of Medical Genetics, Warsaw, Poland
| | - Tomasz Gambin
- Institute of Mother and Child, Department of Medical Genetics, Warsaw, Poland
- Warsaw University of Technology, Institute of Computer Science, Warsaw, Poland
- Baylor College of Medicine, Department of Molecular and Human Genetics, Texas, USA
| | - Katarzyna Ziora
- Medical University of Silesia in Katowice, Department of Pediatrics in Zabrze, Silesia, Poland
| | - Marta Marek
- Medical University of Silesia in Katowice, Department of Pediatrics in Bytom, Silesia, Poland
| | - Sylwia Rzonca
- Institute of Mother and Child, Department of Medical Genetics, Warsaw, Poland
| | | | | | - Anna Obuchowicz
- Medical University of Silesia in Katowice, Department of Pediatrics in Bytom, Silesia, Poland
| | - Alicja Sikora
- Medical University of Silesia in Katowice, Department of Pediatrics in Bytom, Silesia, Poland
| | - James R. Lupski
- Baylor College of Medicine, Department of Molecular and Human Genetics, Texas, USA
- Human Genome Sequencing Center, Baylor College of Medicine, Texas, USA
- Baylor College of Medicine, Department of Pediatrics, Texas, USA
- Texas Children’s Hospital, Texas, USA
| | - Wojciech Wiszniewski
- Institute of Mother and Child, Department of Medical Genetics, Warsaw, Poland
- Oregon Health and Science University, Department of Molecular and Medical Genetics, Portland, USA
| | - Pawel Gawlinski
- Institute of Mother and Child, Department of Medical Genetics, Warsaw, Poland
| |
Collapse
|
89
|
Altered expression of circular RNA in primary Sjögren's syndrome. Clin Rheumatol 2019; 38:3425-3433. [PMID: 31420809 DOI: 10.1007/s10067-019-04728-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/08/2019] [Accepted: 07/30/2019] [Indexed: 12/17/2022]
Abstract
OBJECTIVES This study evaluated expression of circRNA in primary Sjögren's syndrome (pSS) patients so as to find novel biomarkers for pSS screening and discussed possible role of circRNA in pSS. We also evaluated expression profile of circRNA in systemic lupus erythematosus (SLE) patients. METHODS Microarray analysis detected circRNA expression in PBMCs from five paired pSS, SLE patients, and controls. Then, differentially expressed circRNAs were validated in 30 pSS patients as compared to 30 SLE patients, healthy controls. CircRNAs interacting with miRNAs were discussed by Arraystar's homemade miRNA target prediction software. ROC analysis assessed the diagnostic value. RESULTS We identified 234 differentially expressed circRNAs in pSS patients and verified five selected circRNAs (including hsa_circRNA_001264, hsa_circRNA_104121, hsa_circRNA_045355, hsa_circRNA_103461, hsa_circRNA_105034). Expression of hsa_circRNA_001264, hsa_circRNA_104121, and hsa_circRNA_045355 was strongly related to some clinical, laboratory parameters, and disease activity index in pSS patients. ROC analysis indicated potential diagnostic ability for the three circRNAs in pSS patients. One hundred and forty-eight circRNAs were differently expressed between lupus patients and controls. CONCLUSION This study provides evidence that hsa_circRNA_001264, hsa_circRNA_104121, and hsa_circRNA_045355 might be biomarkers for pSS, correlate with pSS etiology.Key Points• Many circRNAs were dysregulated in pSS patients.• Differentially expressed circRNAs correlated with pSS clinical, laboratory features.• CircRNAs may be biomarkers for pSS.
Collapse
|
90
|
Pardini B, Sabo AA, Birolo G, Calin GA. Noncoding RNAs in Extracellular Fluids as Cancer Biomarkers: The New Frontier of Liquid Biopsies. Cancers (Basel) 2019; 11:E1170. [PMID: 31416190 PMCID: PMC6721601 DOI: 10.3390/cancers11081170] [Citation(s) in RCA: 127] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 08/04/2019] [Accepted: 08/10/2019] [Indexed: 02/06/2023] Open
Abstract
The last two decades of cancer research have been devoted in two directions: (1) understanding the mechanism of carcinogenesis for an effective treatment, and (2) improving cancer prevention and screening for early detection of the disease. This last aspect has been developed, especially for certain types of cancers, thanks also to the introduction of new concepts such as liquid biopsies and precision medicine. In this context, there is a growing interest in the application of alternative and noninvasive methodologies to search for cancer biomarkers. The new frontiers of the research lead to a search for RNA molecules circulating in body fluids. Searching for biomarkers in extracellular body fluids represents a better option for patients because they are easier to access, less painful, and potentially more economical. Moreover, the possibility for these types of samples to be taken repeatedly, allows a better monitoring of the disease progression or treatment efficacy for a better intervention and dynamic treatment of the patient, which is the fundamental basis of personalized medicine. RNA molecules, freely circulating in body fluids or packed in microvesicles, have all the characteristics of the ideal biomarkers owing to their high stability under storage and handling conditions and being able to be sampled several times for monitoring. Moreover, as demonstrated for many cancers, their plasma/serum levels mirror those in the primary tumor. There are a large variety of RNA species noncoding for proteins that could be used as cancer biomarkers in liquid biopsies. Among them, the most studied are microRNAs, but recently the attention of the researcher has been also directed towards Piwi-interacting RNAs, circular RNAs, and other small noncoding RNAs. Another class of RNA species, the long noncoding RNAs, is larger than microRNAs and represents a very versatile and promising group of molecules which, apart from their use as biomarkers, have also a possible therapeutic role. In this review, we will give an overview of the most common noncoding RNA species detectable in extracellular fluids and will provide an update concerning the situation of the research on these molecules as cancer biomarkers.
Collapse
Affiliation(s)
- Barbara Pardini
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
- Department of Medical Sciences, University of Turin, 10124 Turin, Italy.
- Unit of Molecular Epidemiology and Exposome, Italian Institute for Genomic Medicine (IIGM), 10126 Turin, Italy.
| | - Alexandru Anton Sabo
- Department of Pediatrics, Marie Curie Emergency Clinical Hospital for Children, 077120 Bucharest, Romania
| | - Giovanni Birolo
- Department of Medical Sciences, University of Turin, 10124 Turin, Italy
- Unit of Molecular Epidemiology and Exposome, Italian Institute for Genomic Medicine (IIGM), 10126 Turin, Italy
| | - George Adrian Calin
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
- Center for RNA Interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
| |
Collapse
|
91
|
Diallo LH, Tatin F, David F, Godet AC, Zamora A, Prats AC, Garmy-Susini B, Lacazette E. How are circRNAs translated by non-canonical initiation mechanisms? Biochimie 2019; 164:45-52. [PMID: 31265859 DOI: 10.1016/j.biochi.2019.06.015] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 06/27/2019] [Indexed: 12/22/2022]
Abstract
Circular RNAs (circRNAs) are covalently closed RNA loops produced by a very large number of expressed eukaryotic genes. Initially considered as splicing background and/or splicing side products, recent studies have shown that they are evolutionary conserved and abundant in cells. Yet, their functions remain largely unknown. Because of their circular shape, they were initially categorized as non-coding RNAs. However, recent studies based on mass spectrometry analysis indicate that some cytoplasmic circRNAs are effectively translated into detectable peptides. This raises the interesting question of which mechanisms regulate the translation initiation of those circular transcripts, i.e. unable to recruit the small ribosome subunit through the 5' cap. A possible mechanism for alternative translation initiation is the presence of an IRES (Internal Ribosome Entry Site) that allows direct recruitment of initiation factors and ribosomes on the RNA independently from the cap. This is the case for several circRNAs that exhibit IRESs upstream from the start codon. Yet, another process seems to be involved in initiating the translation of circRNAs: the presence of N6-methyladenosine (m6A) residues. These m6A can promote cap-independent translation and have been shown to be enriched in circRNAs. Interestingly, these two alternative translation initiation processes are generally activated under cellular stress to allow expression of specific stress response genes. These discoveries therefore link circRNA translation to cellular response to stress conditions, raising new enquiries about the regulation of circRNA expression under stress conditions and their functions. This review provides a state of the art on this emerging area.
Collapse
Affiliation(s)
- Leïla Halidou Diallo
- UMR 1048-I2MC, Université de Toulouse UT3, INSERM, 1 Avenue Jean Poulhès, BP84225, 31432, Toulouse, Cedex 4, France
| | - Florence Tatin
- UMR 1048-I2MC, Université de Toulouse UT3, INSERM, 1 Avenue Jean Poulhès, BP84225, 31432, Toulouse, Cedex 4, France
| | - Florian David
- UMR 1048-I2MC, Université de Toulouse UT3, INSERM, 1 Avenue Jean Poulhès, BP84225, 31432, Toulouse, Cedex 4, France
| | - Anne-Claire Godet
- UMR 1048-I2MC, Université de Toulouse UT3, INSERM, 1 Avenue Jean Poulhès, BP84225, 31432, Toulouse, Cedex 4, France
| | - Audrey Zamora
- UMR 1048-I2MC, Université de Toulouse UT3, INSERM, 1 Avenue Jean Poulhès, BP84225, 31432, Toulouse, Cedex 4, France
| | - Anne-Catherine Prats
- UMR 1048-I2MC, Université de Toulouse UT3, INSERM, 1 Avenue Jean Poulhès, BP84225, 31432, Toulouse, Cedex 4, France
| | - Barbara Garmy-Susini
- UMR 1048-I2MC, Université de Toulouse UT3, INSERM, 1 Avenue Jean Poulhès, BP84225, 31432, Toulouse, Cedex 4, France
| | - Eric Lacazette
- UMR 1048-I2MC, Université de Toulouse UT3, INSERM, 1 Avenue Jean Poulhès, BP84225, 31432, Toulouse, Cedex 4, France.
| |
Collapse
|
92
|
Chi Y, Luo Q, Song Y, Yang F, Wang Y, Jin M, Zhang D. Circular RNA circPIP5K1A promotes non‐small cell lung cancer proliferation and metastasis through miR‐600/HIF‐1α regulation. J Cell Biochem 2019; 120:19019-19030. [PMID: 31241217 DOI: 10.1002/jcb.29225] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 06/06/2019] [Indexed: 12/18/2022]
Affiliation(s)
- Yongbing Chi
- Clinical LaboratoryShanghai Pudong New Area Gongli Hospital Shanghai China
| | - Qiancheng Luo
- Department of Emergency Medicine, Shanghai Pudong New Area Gongli HospitalThe Second Military Medical University Shanghai China
| | - Yuting Song
- Ningxia Medical University Ningxia China
- Sino‐French Cooperative Central Lab, Shanghai Gongli HospitalSecondary Military Medical University Shanghai China
| | - Fangsong Yang
- Anhui Gaolu Winery Staff Hospital Bozhou Shanghai China
| | - Ying Wang
- Department of Central Laboratory, Shanghai Gongli HospitalThe Second Military Medical University Shanghai China
| | - Mingming Jin
- Department of Central Laboratory, Shanghai Gongli HospitalThe Second Military Medical University Shanghai China
| | - Denghai Zhang
- Department of Central Laboratory, Shanghai Gongli HospitalThe Second Military Medical University Shanghai China
| |
Collapse
|
93
|
The emerging role of circular RNAs in breast cancer. Biosci Rep 2019; 39:BSR20190621. [PMID: 31160488 PMCID: PMC6591565 DOI: 10.1042/bsr20190621] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 05/30/2019] [Accepted: 05/31/2019] [Indexed: 12/23/2022] Open
Abstract
Breast cancer (BCa) is one of the most frequently diagnosed cancers and leading cause of cancer deaths among females worldwide. Circular RNAs (circRNAs) are a new class of endogenous regulatory RNAs characterized by circular shape resulting from covalently closed continuous loops that are capable of regulating gene expression at transcription or post-transcription levels. With the unique structures, circRNAs are resistant to exonuclease RNase R and maintain stability more easily than linear RNAs. Recently, an increasing number of circRNAs are discovered and reported to show different expression in BCa and these dysregulated circRNAs were correlated with patients’ clinical characteristics and grade in the progression of BCa. CircRNAs participate in the bioprocesses of carcinogenesis of BCa, including cell proliferation, apoptosis, cell cycle, tumorigenesis, vascularization, cell invasion, migration as well as metastasis. Here we concentrated on biogenesis and function of circRNAs, summarized their implications in BCa and discussed their potential as diagnostic and therapeutic targets for BCa.
Collapse
|
94
|
Duan X, Li L, Gan J, Peng C, Wang X, Chen W, Peng D. Identification and functional analysis of circular RNAs induced in rats by middle cerebral artery occlusion. Gene 2019; 701:139-145. [DOI: 10.1016/j.gene.2019.03.053] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 03/05/2019] [Accepted: 03/22/2019] [Indexed: 01/01/2023]
|
95
|
Shu X, Cheng L, Dong Z, Shu S. Identification of circular RNA-associated competing endogenous RNA network in the development of cleft palate. J Cell Biochem 2019; 120:16062-16074. [PMID: 31074068 DOI: 10.1002/jcb.28888] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/28/2019] [Accepted: 03/15/2019] [Indexed: 02/05/2023]
Abstract
Circular RNAs (circRNAs) serve as competing endogenous RNAs (ceRNAs) and indirectly regulate gene expression through shared microRNAs (miRNAs). However, the regulatory mechanisms of circRNA as ceRNA associated with the fusion of palatal shelves in palatogenesis are yet unclear. This study aimed to explore the potential mechanism underlying the role of circRNA as ceRNA in cleft palate (CP). First, we systematically analyzed RNA-seq and miRNA-seq data after high-throughput sequencing for embryonic palatal shelf tissues from a mouse CP model induced by maternal exposure to all-trans retinoic acid on embryonic gestation day 14.5 (E14.5). Thirty-nine circRNAs, 18 miRNAs, and 936 messenger RNAs (mRNAs) were significantly dysregulated (log2 [fold change {FC}] > 1; P < 0.05). Thereafter, we constructed a circRNA-associated ceRNA network. Finally, we determined the circRNA_0954-miRNA-881-3p-PRKAR1α ceRNA network as a hub involved in palatogenesis. Gene Ontology analysis revealed that ceRNA-related genes were associated with facial morphogenesis and developmental gene silencing. Kyoto Encyclopedia of Genes and Genomes pathway analysis indicated that ceRNA-related genes are involved in apoptosis (P < 0.05, fold enrichment >1). Quantitative reverse transcription polymerase chain reaction was performed to verify the results of ceRNA analysis. We found that the circRNA-miRNA-mRNA ceRNA network is involved in palatogenesis. The present results imply that circRNA_0954-miRNA-881-3p-PRKAR1α ceRNA network may cause dysfunctional palatal fusion and might facilitate the development of novel epigenetic biomarkers to treat CP in the future.
Collapse
Affiliation(s)
- Xuan Shu
- The Cleft Lip and Palate Center, Second Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Liuhanghang Cheng
- The Cleft Lip and Palate Center, Second Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Zejun Dong
- The Cleft Lip and Palate Center, Second Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Shenyou Shu
- The Cleft Lip and Palate Center, Second Affiliated Hospital of Shantou University Medical College, Shantou, China
| |
Collapse
|
96
|
Cong L, Yang Q, Hu C, Yu Q, Hao S, Li D. Current Status of Functional Studies on Circular RNAs in Bladder Cancer and their Potential Role as Diagnostic and Prognostic Biomarkers: A Review. Med Sci Monit 2019; 25:3425-3434. [PMID: 31070194 PMCID: PMC6528548 DOI: 10.12659/msm.916697] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Worldwide, bladder cancer represents the ninth most common malignancy and is the 13th cause of cancer-associated death. Although surgery combined with chemotherapy and radiotherapy has improved patient outcomes, the prognosis remains poor for most patients with muscle-invasive bladder cancer. The exact mechanisms and critical regulators of bladder cancer remain unknown. Circular RNAs (circRNAs) are a distinct type of endogenous non-coding RNA. Recent studies have shown that circRNAs participate in many processes, including proliferation, invasion, migration, and apoptosis in multiple types of malignancy, including bladder cancer. Some circRNAs are dysregulated in bladder cancer and play essential roles in cancer progression. Importantly, some circRNAs may serve as diagnostic and prognostic biomarkers for bladder cancer. This review aims to summarize the findings from recent studies that have focused on the roles of human circRNAs in bladder cancer and discusses the clinical roles for circRNAs, including their potential roles as diagnostic or prognostic biomarkers.
Collapse
Affiliation(s)
- Liang Cong
- Department of Digestive Endoscopy, The Second Hospital of Jilin University, Changchun, Jilin, China (mainland)
| | - Qiwei Yang
- Medical Research Center, The Second Hospital of Jilin University, Changchun, Jilin, China (mainland)
| | - Chunmei Hu
- Department of Hematology and Oncology, The Second Hospital of Jilin University, Changchun, Jilin, China (mainland)
| | - Qiong Yu
- Department of Hematology and Oncology, The Second Hospital of Jilin University, Changchun, Jilin, China (mainland)
| | - Shuhong Hao
- Department of Hematology and Oncology, The Second Hospital of Jilin University, Changchun, Jilin, China (mainland)
| | - Dongfu Li
- Department of Digestive Endoscopy, The Second Hospital of Jilin University, Changchun, Jilin, China (mainland)
| |
Collapse
|
97
|
Ravnik-Glavač M, Glavač D. Editorial comments for the circular RNA circPRKCI promotion of tumor growth in lung adenocarcinoma. J Thorac Dis 2019; 11:S1377-S1381. [PMID: 31245138 DOI: 10.21037/jtd.2019.03.71] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Metka Ravnik-Glavač
- Institute of Biochemistry, Institute of Pathology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.,Department of Molecular Genetics, Institute of Pathology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Damjan Glavač
- Department of Molecular Genetics, Institute of Pathology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| |
Collapse
|
98
|
MicroRNA amplification and detection technologies: opportunities and challenges for point of care diagnostics. J Transl Med 2019; 99:452-469. [PMID: 30542067 DOI: 10.1038/s41374-018-0143-3] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 08/03/2018] [Accepted: 08/30/2018] [Indexed: 12/13/2022] Open
Abstract
The volume of point of care (POC) testing continues to grow steadily due to the increased availability of easy-to-use devices, thus making it possible to deliver less costly care closer to the patient site in a shorter time relative to the central laboratory services. A novel class of molecules called microRNAs have recently gained attention in healthcare management for their potential as biomarkers for human diseases. The increasing interest of miRNAs in clinical practice has led to an unmet need for assays that can rapidly and accurately measure miRNAs at the POC. However, the most widely used methods for analyzing miRNAs, including Northern blot-based platforms, in situ hybridization, reverse transcription qPCR, microarray, and next-generation sequencing, are still far from being used as ideal POC diagnostic tools, due to considerable time, expertize required for sample preparation, and in terms of miniaturizations making them suitable platforms for centralized labs. In this review, we highlight various existing and upcoming technologies for miRNA amplification and detection with a particular emphasis on the POC testing industries. The review summarizes different miRNA targets and signals amplification-based assays, from conventional methods to alternative technologies, such as isothermal amplification, paper-based, oligonucleotide-templated reaction, nanobead-based, electrochemical signaling- based, and microfluidic chip-based strategies. Based on critical analysis of these technologies, the possibilities and feasibilities for further development of POC testing for miRNA diagnostics are addressed and discussed.
Collapse
|
99
|
Wang Z, Zhu Z, Wang H, Qin B, Liu J, Yao X, Li W, Chen K. Downregulation of circDYNC1H1 exhibits inhibitor effect on cell proliferation and migration in hepatocellular carcinoma through miR‐140‐5p. J Cell Physiol 2019; 234:17775-17785. [PMID: 30864145 DOI: 10.1002/jcp.28403] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 01/15/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Zheng‐Yang Wang
- Department of Pathology The First Affiliated Hospital of Zhengzhou University Zhengzhou China
- Department of Pathology School of Basic Medicine, Zhengzhou University Zhengzhou China
- Henan Key Laboratory for Tumor Pathology Zhengzhou China
| | - Zhu Zhu
- Department of Biological Sample Bank The First Affiliated Hospital of Zhengzhou University Zhengzhou China
| | - Hua‐Fei Wang
- Department of Biological Sample Bank The First Affiliated Hospital of Zhengzhou University Zhengzhou China
| | - Bo Qin
- Department of Translational Medicine Center The First Affiliated Hospital of Zhengzhou University Zhengzhou China
| | - Jing Liu
- Department of Pathology The First Affiliated Hospital of Zhengzhou University Zhengzhou China
- Department of Pathology School of Basic Medicine, Zhengzhou University Zhengzhou China
- Henan Key Laboratory for Tumor Pathology Zhengzhou China
| | - Xiao‐Han Yao
- Department of Medical Research Center The First Affiliated Hospital of Zhengzhou University Zhengzhou China
| | - Wen‐Cai Li
- Department of Pathology The First Affiliated Hospital of Zhengzhou University Zhengzhou China
- Department of Pathology School of Basic Medicine, Zhengzhou University Zhengzhou China
- Henan Key Laboratory for Tumor Pathology Zhengzhou China
| | - Kui‐Sheng Chen
- Department of Pathology The First Affiliated Hospital of Zhengzhou University Zhengzhou China
- Department of Pathology School of Basic Medicine, Zhengzhou University Zhengzhou China
- Henan Key Laboratory for Tumor Pathology Zhengzhou China
| |
Collapse
|
100
|
Su W, Sun S, Wang F, Shen Y, Yang H. Circular RNA hsa_circ_0055538 regulates the malignant biological behavior of oral squamous cell carcinoma through the p53/Bcl-2/caspase signaling pathway. J Transl Med 2019; 17:76. [PMID: 30857544 PMCID: PMC6413456 DOI: 10.1186/s12967-019-1830-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 03/06/2019] [Indexed: 01/07/2023] Open
Abstract
Background Oral squamous cell carcinoma (OSCC) is a common oral and maxillofacial malignant tumor with high rates of metastasis and mortality. Circular RNAs (circRNAs), a type of non-coding RNA, are involved in the development of a variety of tumors. The roles of circRNAs in OSCC are unclear; in this study, the correlation between the circRNA hsa_circ_0055538, previously identified by high-throughput sequencing, and the biological behavior of OSCC was evaluated. Methods circRNA expression was evaluated using patient tissue samples and various OSCC cell lines. The effects of overexpression and knockdown were evaluated by lentiviral infection and siRNA transfection of the SCC9 and CAL27 cell lines. Migration, invasion, apoptosis, and the expression of proteins in the p53 signaling pathway were evaluated. Infected cells were injected into nude mice to evaluate tumorigenesis. Results Low hsa_circ_0055538 expression levels were verified in tumor tissues and OSCC cell lines. Clinical data analysis showed that the expression level is related to the degree of tumor differentiation. Lentiviral infection and siRNA transfection of SCC9 and CAL27 cell lines revealed that changes in circRNA expression significantly affected the malignant biological behavior of OSCC cells. Importantly, nude mouse experiments showed that high expression of hsa_circ_0055538 inhibited tumor growth. Finally, hsa_circ_0055538 may affect the development of OSCC via the p53/Bcl-2/caspase signaling pathway. Conclusions Our results indicated that hsa_circ_0055538 is involved in OSCC via the p53 signaling pathway and may be a diagnostic and/or prognostic marker as well as a therapeutic target.
Collapse
Affiliation(s)
- Wen Su
- Clinical School, Peking University Shenzhen Hospital, Anhui Medical University, Shenzhen, 518036, Guangdong, China.,Department of Oral and Maxillofacial Surgery, Peking University Shenzhen Hospital, No. 1120 Lianhua Road, Shenzhen, 518036, Guangdong, China
| | - Shuai Sun
- Department of Oral and Maxillofacial Surgery, Peking University Shenzhen Hospital, No. 1120 Lianhua Road, Shenzhen, 518036, Guangdong, China
| | - Feng Wang
- Department of Oral and Maxillofacial Surgery, Peking University Shenzhen Hospital, No. 1120 Lianhua Road, Shenzhen, 518036, Guangdong, China
| | - Yuehong Shen
- Department of Oral and Maxillofacial Surgery, Peking University Shenzhen Hospital, No. 1120 Lianhua Road, Shenzhen, 518036, Guangdong, China
| | - Hongyu Yang
- Clinical School, Peking University Shenzhen Hospital, Anhui Medical University, Shenzhen, 518036, Guangdong, China. .,Department of Oral and Maxillofacial Surgery, Peking University Shenzhen Hospital, No. 1120 Lianhua Road, Shenzhen, 518036, Guangdong, China.
| |
Collapse
|