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Leng X, Zhang M, Xu Y, Wang J, Ding N, Yu Y, Sun S, Dai W, Xue X, Li N, Yang Y, Shi Z. Non-coding RNAs as therapeutic targets in cancer and its clinical application. J Pharm Anal 2024; 14:100947. [PMID: 39149142 PMCID: PMC11325817 DOI: 10.1016/j.jpha.2024.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 01/12/2024] [Accepted: 02/01/2024] [Indexed: 08/17/2024] Open
Abstract
Cancer genomics has led to the discovery of numerous oncogenes and tumor suppressor genes that play critical roles in cancer development and progression. Oncogenes promote cell growth and proliferation, whereas tumor suppressor genes inhibit cell growth and division. The dysregulation of these genes can lead to the development of cancer. Recent studies have focused on non-coding RNAs (ncRNAs), including circular RNA (circRNA), long non-coding RNA (lncRNA), and microRNA (miRNA), as therapeutic targets for cancer. In this article, we discuss the oncogenes and tumor suppressor genes of ncRNAs associated with different types of cancer and their potential as therapeutic targets. Here, we highlight the mechanisms of action of these genes and their clinical applications in cancer treatment. Understanding the molecular mechanisms underlying cancer development and identifying specific therapeutic targets are essential steps towards the development of effective cancer treatments.
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Affiliation(s)
- Xuejiao Leng
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Mengyuan Zhang
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yujing Xu
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Jingjing Wang
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Ning Ding
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yancheng Yu
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Shanliang Sun
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Weichen Dai
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Xin Xue
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Nianguang Li
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Ye Yang
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Zhihao Shi
- Laboratory of Molecular Design and Drug Discovery, School of Science, China Pharmaceutical University, Nanjing, 211198, China
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Sun X, Zhao X, Xu Y, Yan Y, Han L, Wei M, He M. Potential therapeutic strategy for cancer: Multi-dimensional cross-talk between circRNAs and parental genes. Cancer Lett 2024; 588:216794. [PMID: 38453043 DOI: 10.1016/j.canlet.2024.216794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/27/2024] [Accepted: 03/04/2024] [Indexed: 03/09/2024]
Abstract
In many ways, circular RNAs (circRNAs) have been demonstrated to be crucial in the onset and advancement of cancer throughout the last ten years and have become a new focus of intense research in the field of RNAs. Accumulating studies have demonstrated that circRNAs can regulate parental gene expression via a variety of biological pathways. Furthermore, research into the complex interactions between circRNAs and their parental genes will shed light on their biological roles and open up new avenues for circRNAs' potential clinical translational uses. However, to date, multi-dimensional cross-talk between circRNAs and parental genes have not been systematically elucidated. Particularly intriguing is circRNA's exploration of tumor targeting, and potential therapeutic uses based on the parental gene regulation perspective. Here, we discuss their biogenesis, take a fresh look at the molecular mechanisms through which circRNAs control the expression of their parental genes in cancer. We further highlight We further highlight the latest circRNA clinical translational applications, including prognostic diagnostic markers, cancer vaccines, gDNA, and so on. Demonstrating the potential benefits and future applications of circRNA therapy.
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Affiliation(s)
- Xiaoyu Sun
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning Province, China; Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Shenyang, China.
| | - Xinyi Zhao
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning Province, China; Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Shenyang, China.
| | - Yan Xu
- Department of Urology, The First Hospital of China Medical University, Shenyang, China.
| | - Yuanyuan Yan
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning Province, China; Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Shenyang, China.
| | - Li Han
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning Province, China; Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Shenyang, China.
| | - Minjie Wei
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning Province, China; Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Shenyang, China; Liaoning Medical Diagnosis and Treatment Center, Liaoning Province, China.
| | - Miao He
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning Province, China; Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Shenyang, China.
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Shi X, Yang J, Wang M, Xia L, Zhang L, Qiao S. Hsa_circ_0050900 affects ferroptosis in intrahepatic cholangiocarcinoma cells by targeting hsa‑miR-605‑3p to regulate SLC3A2. Oncol Lett 2024; 27:2. [PMID: 38028176 PMCID: PMC10665981 DOI: 10.3892/ol.2023.14135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 09/20/2023] [Indexed: 12/01/2023] Open
Abstract
Intrahepatic cholangiocarcinoma (ICC) is a highly lethal hepatobiliary tumor with high aggressiveness. The role of circular RNA (circRNA) in ICC remains to be explored. The present study aimed to investigate whether hsa_circ_0050900 affected ferroptosis in ICC cells by regulating hsa-microRNA (miR)-605-3p/solute carrier family 3 member 2 (SLC3A2). Human ICC cells were cultured and hsa_circ_0050900 expression was evaluated by reverse transcription-quantitative PCR. hsa_circ_0050900 was knocked down and ferroptosis inhibitor ferrostatin-1 was added to HuCCT-1 cells. Following knockdown or overexpression of hsa-miR-605-3p, Fe2+, reactive oxygen species (ROS), glutathione peroxidase 4 and SLC3A2 levels were assessed using iron and ROS assay kit or RT-qPCR and western blotting, respectively. Cell function experiments were performed to examine proliferation and migration abilities. Dual-luciferase reporter gene and argonaute2-RNA immunoprecipitation assay verified the relationship among hsa_circ_0050900, hsa-miR-605-3p, and SLC3A2. hsa_circ_0050900 was derived from actinin alpha 4 gene and was elevated in ICC cells. Among HuCCT-1, QBC-939, HCCC-9810, and RBE cell lines, the highest expression was in HuCCT-1 cells. Inhibition of hsa_circ_0050900 inhibited proliferation and migration by facilitating ICC cell ferroptosis. hsa-miR-605-3p expression was elevated after knocking down hsa_circ_0050900 and hsa-miR-605-3p was negatively regulated by hsa_circ_0050900. In addition, hsa-miR-605-3p targeted SLC3A2. Overexpression of hsa-miR-605-3p regulated SLC3A2 to promote ICC cell ferroptosis and inhibit proliferation and migration. Taken together, knockdown of hsa_circ_0050900 inhibited SLC3A2 expression via sponging hsa-miR-605-3p to promote ICC cell ferroptosis, and finally suppressed proliferation and migration. The present study suggested that hsa_circ_0050900 was a potential therapeutic target for ICC.
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Affiliation(s)
- Xiangtian Shi
- Department of Hepatobiliary Surgery, Bayannur Hospital, Bayannur, Inner Mongolia Autonomous Region 015000, P.R. China
| | - Jiarui Yang
- Department of Hepatobiliary, Pancreatic and Splenic Surgery, Affiliated Dongguan Hospital, Southern Medical University (Dongguan People's Hospital), Dongguan, Guangdong 523058, P.R. China
- Department of Pancreatic Hepato-Biliary-Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510655, P.R. China
| | - Meng Wang
- Department of Hepatobiliary Surgery, Bayannur Hospital, Bayannur, Inner Mongolia Autonomous Region 015000, P.R. China
| | - Long Xia
- Department of Hepatobiliary-Pancreatic-Splenic Surgery, Inner Mongolia Autonomous Region People's Hospital, Hohhot, Inner Mongolia Autonomous Region 010017, P.R. China
| | - Lei Zhang
- Department of Pancreatic Hepato-Biliary-Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510655, P.R. China
| | - Shan Qiao
- Department of Hepatobiliary Surgery, Bayannur Hospital, Bayannur, Inner Mongolia Autonomous Region 015000, P.R. China
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Li X, Yin X, Bao H, Liu C. Targeting a novel circITCH/miR-421/BTG1 axis is effective to suppress the malignant phenotypes in hepatocellular carcinoma (HCC) cells. Cytotechnology 2023; 75:255-267. [PMID: 37187949 PMCID: PMC10167090 DOI: 10.1007/s10616-023-00576-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 03/16/2023] [Indexed: 04/05/2023] Open
Abstract
Circular RNA-based competing endogenous RNA (ceRNA) networks contribute to the initiation and development of various types of cancer, including hepatocellular carcinoma (HCC). Although a novel circular RNA itchy E3 ubiquitin protein ligase (circITCH) is identified as a tumor suppressor in HCC, its detailed molecular mechanisms have not been fully delineated. The present study was designed to resolve this issue, and we firstly verified that circITCH suppressed the malignant phenotypes in HCC cells by regulating a novel miR-421/B-cell translocation gene 1 (BTG1) axis. Specifically, through performing the Real-Time qPCR analysis, we noticed that circITCH expression in HCC tumor tissues or cell lines were significantly lower than that in adjacent normal tissues or normal hepatocytes, and the expression levels of circITCH were negatively correlated with tumor size and TNM stage in HCC patients. Next, our functional experiments confirmed that overexpression of circITCH induced cell cycle arrest and apoptosis, and reduced cell viability and colony forming ability in Hep3B and Huh7 cells. Mechanically, bioinformatics analysis, RNA immunoprecipitation and luciferase reporter assay demonstrated that circITCH served as RNA sponges for miR-421 to elevate BTG1 levels in HCC cells. The rescuing experiments verified that upregulation of miR-421 promoted cell viability and colony formation, and reduced apoptosis, which were abrogated by overexpression of circITCH or BTG1. In conclusion, this study identified a novel circITCH/miR-421/BTG1 axis that restrained the development of HCC, and our findings provided novel biomarkers for the treatment of this disease.
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Affiliation(s)
- Xiaodong Li
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, No. 37, Yiyuan Street, Nangang District, Harbin, 150001 Heilongjiang China
| | - Xuedong Yin
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, No. 37, Yiyuan Street, Nangang District, Harbin, 150001 Heilongjiang China
| | - Heyi Bao
- Department of General Surgery, Qiqihar First Hospital, Qiqihar, 161005 China
| | - Chang Liu
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, No. 37, Yiyuan Street, Nangang District, Harbin, 150001 Heilongjiang China
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Crosstalk of miRNAs with signaling networks in bladder cancer progression: Therapeutic, diagnostic and prognostic functions. Pharmacol Res 2022; 185:106475. [DOI: 10.1016/j.phrs.2022.106475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/17/2022] [Accepted: 09/27/2022] [Indexed: 12/24/2022]
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Shen C, Li Z, Zhang Y, Zhang Z, Wu Z, Da L, Yang S, Wang Z, Zhang Y, Qie Y, Zhao G, Lin Y, Huang S, Zhou M, Hu H. Identification of a dysregulated CircRNA-associated gene signature for predicting prognosis, immune landscape, and drug candidates in bladder cancer. Front Oncol 2022; 12:1018285. [PMID: 36300085 PMCID: PMC9589509 DOI: 10.3389/fonc.2022.1018285] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 09/20/2022] [Indexed: 11/13/2022] Open
Abstract
Increasing evidences have demonstrated that circular RNA (circRNAs) plays a an essential regulatory role in initiation, progression and immunotherapy resistance of various cancers. However, circRNAs have rarely been studied in bladder cancer (BCa). The purpose of this research is to explore new circRNAs and their potential mechanisms in BCa. A novel ceRNA-regulated network, including 87 differentially expressed circRNAs (DE-circRNAs), 126 DE-miRNAs, and 217 DE-mRNAs was constructed to better understanding the biological processes using Cytoscape 3.7.1 based on our previously high-throughput circRNA sequencing and five GEO datasets. Subsequently, five randomly selected circRNAs (upregulated circ_0001681; downregulated circ_0000643, circ_0001798, circ_0006117 and circ_0067900) in 20 pairs of BCa and paracancerous tissues were confirmed using qRT-PCR. Functional analysis results determined that 772 GO functions and 32 KEGG pathways were enriched in the ceRNA network. Ten genes (PFKFB4, EDNRA, GSN, GAS1, PAPPA, DTL, TGFBI, PRSS8, RGS1 and TCF4) were selected for signature construction among the ceRNA network. The Human Protein Atlas (HPA) expression of these genes were consistent with the above sequencing data. Notably, the model was validated in multiple external datasets (GSE13507, GSE31684, GSE48075, IMvigor210 and GSE32894). The immune-infiltration was evaluated by 7 published algorithms (i.e., TIMER, CIBERSORT, CIBERSORT-ABS, QUANTISEQ, MCPCOUNTER, XCELL and EPIC). Next, Correlations between riskscore or risk groups and clinicopathological data, overall survival, recognized immunoregulatory cells or common chemotherapeutic agents of BCa patients were performed using wilcox rank test, chi-square test, cox regression and spearman’s correlation analysis; and, these results are significant. According to R package “GSVA” and “clusterProfiler”, the most significantly enriched HALLMARK and KEGG pathway was separately the ‘Epithelial Mesenchymal Transition’ and ‘Ecm Receptor Interaction’ in the high- vs. low-risk group. Additionally, the functional experiments in vitro also revealed that the overexpression of has_circ_0067900 significantly impaired the proliferation, migration, and invasion capacities of BCa cells. Collectively, the results of the current study provide a novel landscape of circRNA-associated ceRNA-regulated network in BCa. The ceRNA-associated gene model which was constructed presented a high predictive performance for the prognosis, immunotherapeutic responsiveness, and chemotherapeutic sensitivity of BCa. And, has_circ_0067900 was originally proposed as tumor suppressor for patients with BCa.
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Affiliation(s)
- Chong Shen
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Zhi Li
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Yinglang Zhang
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Zhe Zhang
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Zhouliang Wu
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - La Da
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Shaobo Yang
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Zejin Wang
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Yu Zhang
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Yunkai Qie
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Gangjian Zhao
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Yuda Lin
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Shiwang Huang
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Mingli Zhou
- Department of Neuromuscular Diseases, Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Hailong Hu
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
- *Correspondence: Hailong Hu,
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Wang H, Gao X, Yu S, Wang W, Liu G, Jiang X, Sun D. Circular RNAs regulate parental gene expression: A new direction for molecular oncology research. Front Oncol 2022; 12:947775. [PMID: 36091137 PMCID: PMC9453195 DOI: 10.3389/fonc.2022.947775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 08/09/2022] [Indexed: 11/13/2022] Open
Abstract
CircRNAs have been the focus of research in recent years. They are differentially expressed in various human tumors and can regulate oncogenes and tumor suppressor genes expression through various mechanisms. The diversity, stability, evolutionary conservatism and cell- or tissue-specific expression patterns of circRNAs also endow them with important regulatory roles in promoting or inhibiting tumor cells malignant biological behaviors progression. More interestingly, emerging studies also found that circRNAs can regulate not only other genes expression, but also their parental gene expression and thus influence tumors development. Apart from some conventional features, circRNAs have a certain specificity in the regulation of parental gene expression, with a higher proportion affecting parental gene transcription and easier translation into protein to regulate parental gene expression. CircRNAs are generally thought to be unable to produce proteins and therefore the protein-coding ability exhibited by circRNAs in regulating parental gene expression is unique and indicates that the regulatory effects of parental gene expression by circRNAs are not only a competitive binding relationship, but also a more complex molecular relationship between circRNAs and parental gene, which deserves further study. This review summarizes the molecular mechanisms of circRNAs regulating parental gene expression and their biological roles in tumorigenesis and development, aiming to provide new ideas for the clinical application of circRNAs in tumor-targeted therapy.
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Affiliation(s)
- Haicun Wang
- General Surgery Department, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xin Gao
- General Surgery Department, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Shaobo Yu
- General Surgery Department, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Weina Wang
- Department of Anesthesiology, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Guanglin Liu
- General Surgery Department, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xingming Jiang
- General Surgery Department, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China
- *Correspondence: Xingming Jiang, ; Dongsheng Sun,
| | - Dongsheng Sun
- General Surgery Department, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China
- *Correspondence: Xingming Jiang, ; Dongsheng Sun,
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She K, Yu S, He S, Wang W, Chen B. CircRNA 0009043 suppresses non-small-cell lung cancer development via targeting the miR-148a-3p/DNAJB4 axis. Biomark Res 2022; 10:61. [PMID: 35974419 PMCID: PMC9380299 DOI: 10.1186/s40364-022-00407-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 08/04/2022] [Indexed: 11/13/2022] Open
Abstract
Background Circular RNAs (circRNAs) are important regulators of the development and progression of non-small-cell lung cancer (NSCLC) and many other malignancies. The functional importance of circ_0009043 in NSCLC, however, has yet to be established. Methods The expression of circ_0009043, miR-148a-3p, and DnaJ heat shock protein family (Hsp40) member B4 (DNAJB4) in NSCLC cells was assessed via qPCR. The proliferative activity of these cells was examined through EdU uptake and CCK-8 assays, while flow cytometry approaches were used to examine apoptotic cell death rates. Protein expression was measured through Western immunoblotting. Interactions between miR-148a-3p and circ_0009043 or DNAJB4 were detected through RNA immunoprecipitation (RIP) and dual-luciferase reporter assays. The in vivo importance of circ_0009043 as a regulator of oncogenic activity was assessed using murine xenograft models. Results Both NSCLC cells and tissue samples were found to exhibit circ_0009043 upregulation, and lower circ_0009043 expression levels were found to be related to poorer NSCLC patient overall survival. Knocking down circ_0009043 resulted in the enhancement of NSCLC cell proliferative activity and the suppression of apoptotic tumor cell death in vitro, while also driving more rapid in vivo tumorigenesis. Mechanistically, circ_0009043 was found to function as a molecular sponge that sequestered miR-148a-3p, which was in turn able to directly suppress DNAJB4 expression. When miR-148a-3p was overexpressed, this reversed the impact of knocking down circ_0009043 on the apoptotic death and proliferation of NSCLC cells. Conversely, miR-148a-3p inhibition resulted in the suppression of NSCLC cell apoptosis and the enhancement of tumor cell growth, while the downregulation of DNAJB4 reversed these changes. Conclusion Circ_0009043 acts as a tumor suppressor in NSCLC cells, promoting DNAJB4 upregulation via the sequestration of miR-148a-3p.
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Affiliation(s)
- Kelin She
- Department of Thoracic Surgery, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Nomal University, Changsha, Hunan, 410005, China. .,Cancer Research Institute, Central South University, Changsha, 410078, Hunan, China.
| | - Shaoqi Yu
- Department of Thoracic Surgery, The Central Hospital of Shaoyang Affiliated to University of South China, 422000, Shaoyang, China
| | - Shushuai He
- Department of Thoracic Surgery, The Central Hospital of Shaoyang Affiliated to University of South China, 422000, Shaoyang, China
| | - Wen Wang
- Department of Thoracic Surgery, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Nomal University, Changsha, Hunan, 410005, China
| | - Biao Chen
- Department of Thoracic Surgery, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Nomal University, Changsha, Hunan, 410005, China
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Zhu LY, Zhan LJ, Lu JY. Circ_VANGL1 affects proliferation, migration, and invasion of colorectal cancer cells by regulating miR-493-5p/FXR1 axis. Shijie Huaren Xiaohua Zazhi 2022; 30:310-317. [DOI: 10.11569/wcjd.v30.i7.310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND CircRNAs are abnormally expressed in colorectal cancer (CRC) tissues, cell lines, and plasma, and are closely related to the clinical malignant characteristics of CRC. However, the expression and functional mechanism of circ_VANGL1 in CRC are still unclear. We hypothesized that circ_VANGL1 affects the proliferation, migration, and invasion of CRC cells by regulating the miR-493-5p/fragile X-related gene 1 (FXR1) axis.
AIM To investigate the effect of circ_VANGL1 on the prolife-ration, migration, and invasion of CRC cells and the possible mechanism involved.
METHODS Western blot was used to detect the expression of FXR1 in CRC tissues and adjacent tissues. RT-qPCR was performed to detect the expression of circ_VANGL1 and miR-493-5p. CRC cells Caco-2 were cultured in vitro and divided into si-circ_VANGL1 group, si-NC group, miR-NC group, miR-493-5p mimic group, and si-circ_VANGL1 + miR-493-5p inhibitor group. CCK-8 and clone formation assays were performed to evaluate the proliferation ability of Caco-2 cells. Transwell assay was employed to evaluate the migration and invasion ability of Caco-2 cells. Dual luciferase reporter assay was used to detect the interaction between RNAs (circ_VANGL1 and miR-493-5p, miR-493-5p, and FXR1).
RESULTS Compared with tumor adjacent tissues, the relative expression levels of circ_VANGL1 and FXR1 protein in CRC tissue were significantly increased (P < 0.05), but the relative level of miR-493-5p was significantly decreased (P < 0.05). Compared with the si-NC group, the inhibition rate of Caco-2 cells and the relative level of miR-493-5p in the si-circ_VANGL1 group were significantly increased (P < 0.05), but the expression of FXR1 protein, the number of colonies formed, and the migration and invasion ability were significantly reduced (P < 0.05). Compared with the miR-NC group, the inhibition rate of Caco-2 cells in the miR-493-5p mimic group was significantly increased (P < 0.05), but the expression of FXR1 protein, the number of colonies formed, and the migration and invasion ability were significantly reduced (P < 0.05). Circ_VANGL1 directly bound to miR-493-5p. Compared with the si-circ_VANGL1 group, the inhibition rate of Caco-2 cells in the si-circ_VANGL1 + miR-493-5p inhibitor group was significantly reduced (P < 0.05), but the expression of FXR1 protein, the number of colonies formed, and the migration and invasion ability were significantly increased (P < 0.05).
CONCLUSION Silencing circ_VANGL1 inhibits the proliferation, migration, and invasion of CRC cells by regulating the miR-493-5p/FXR1 axis.
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Affiliation(s)
- Li-Yan Zhu
- Department of Gastroenterology, Zhejiang Quhua Hospital, Quzhou 324000, Zhejiang Province, China
| | - Lu-Juan Zhan
- Department of Gastroenterology, Zhejiang Quhua Hospital, Quzhou 324000, Zhejiang Province, China
| | - Ji-Ying Lu
- Anorectal Department, Jinhua Central Hospital, Jinhua 321099, Zhejiang Province, China
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Circular RNA VANGL1 Facilitates Migration and Invasion of Papillary Thyroid Cancer by Modulating the miR-194/ZEB1/EMT Axis. JOURNAL OF ONCOLOGY 2022; 2022:4818651. [PMID: 35300347 PMCID: PMC8923752 DOI: 10.1155/2022/4818651] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 02/01/2022] [Indexed: 12/31/2022]
Abstract
Circular RNAs (circRNAs) are often aberrantly expressed in human tumors and also serve a critical regulatory role in papillary thyroid cancer (PTC). The aim of this study is to investigate the expression pattern and biological role of circVANGL1 in PTC. The results revealed that circVANGL1 was significantly upregulated in human PTC samples. In addition, high circVANGL1 expression was closely associated with adverse clinical parameters of PTC patients. Our in vitro experiments further indicated that the knockdown of circVANGL1 using siRNA obviously repressed migration, proliferation, EMT, and invasion of PTC cells, while opposite effects were induced by its overexpression. We further noted that circVANGL1 could interact with miR-194 directly in PTC, and serve as a ceRNA to regulate ZEB1 function. Moreover, miR-194 inhibition markedly abrogated the effects of circVANGL1 knockdown in PTC cells. Therefore, our results provide convincing evidence that circVANGL1 may exert oncogenic effects in PTC, partly via regulating the miR-194/ZEB1 axis.
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11
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Ghafouri-Fard S, Najafi S, Hussen BM, Basiri A, Hidayat HJ, Taheri M, Rashnoo F. The Role of Circular RNAs in the Carcinogenesis of Bladder Cancer. Front Oncol 2022; 12:801842. [PMID: 35296022 PMCID: PMC8918517 DOI: 10.3389/fonc.2022.801842] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 01/28/2022] [Indexed: 12/15/2022] Open
Abstract
Circular RNAs (circRNAs) are a group of transcripts with enclosed configurations which can regulate gene expression. These transcripts have important roles in normal development and in the pathogenesis of disorders. Recent evidence has supported involvement of circRNAs in the development of bladder cancer. Several circRNAs such as circ_0058063, hsa-circRNA-403658, circPDSS1, circCASC15, circRNA-MYLK, and circRNA_103809 have been upregulated in bladder cancer samples. On the other hand, hsa_circ_0137606, BCRC-3, circFUT8, hsa_circ_001598, circSLC8A1, hsa_circ_0077837, hsa_circ_0004826, and circACVR2A are among downregulated circRNAs in bladder cancer. Numerous circRNAs have diagnostic or prognostic value in bladder cancer. In this review, we aim to outline the latest findings about the role of circRNAs in bladder cancer and introduce circRNAs for further investigations as therapeutic targets.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sajad Najafi
- Student Research Committee, Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Erbil, Iraq
| | - Abbas Basiri
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hazha Jamal Hidayat
- Department of Biology, College of Education, Salahaddin University-Erbil, Erbil, Iraq
| | - Mohammad Taheri
- Institute of Human Genetics, Jena University Hospital, Jena, Germany
- *Correspondence: Mohammad Taheri, ; Fariborz Rashnoo,
| | - Fariborz Rashnoo
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- *Correspondence: Mohammad Taheri, ; Fariborz Rashnoo,
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12
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Long G, Ma S, Shi R, Sun Y, Hu Z, Chen K. Circular RNAs and Drug Resistance in Genitourinary Cancers: A Literature Review. Cancers (Basel) 2022; 14:866. [PMID: 35205613 PMCID: PMC8869870 DOI: 10.3390/cancers14040866] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 01/25/2022] [Accepted: 01/27/2022] [Indexed: 02/01/2023] Open
Abstract
In recent years, systematic treatment has made great progress in genitourinary tumors. However, some patients develop resistance to the treatments, resulting in an increase in mortality. Circular RNAs (circRNAs) form a class of non-coding RNAs with high stability and significant clinical relevance. Accumulating evidence indicates that circRNAs play a vital role in cancer development and tumor chemotherapy resistance. This review summarizes the molecular and cellular mechanisms of drug resistance mediated by circRNAs to common drugs used in the treatment of genitourinary tumors. Several circRNAs were identified to regulate the responsiveness to systemic treatments in genitourinary tumors, including chemotherapies such as cisplatin and targeted therapies such as enzalutamide. Canonically, cicrRNAs participate in the competing endogenous RNA (ceRNA) network, or in some cases directly interact with proteins, regulate downstream pathways, and even some circRNAs have the potential to produce proteins or polypeptides. Several cellular mechanisms were involved in circRNA-dependent drug resistance, including autophagy, cancer stem cells, epithelial-mesenchymal transition, and exosomes. The potential clinical prospect of circRNAs in regulating tumor drug resistance was also discussed.
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Affiliation(s)
- Gongwei Long
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (G.L.); (S.M.); (Y.S.)
- Hubei Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Siquan Ma
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (G.L.); (S.M.); (Y.S.)
- Hubei Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Runlin Shi
- Department of Urology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, China;
| | - Yi Sun
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (G.L.); (S.M.); (Y.S.)
- Hubei Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Zhiquan Hu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (G.L.); (S.M.); (Y.S.)
- Hubei Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ke Chen
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (G.L.); (S.M.); (Y.S.)
- Hubei Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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13
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The Emerging Functions of Circular RNAs in Bladder Cancer. Cancers (Basel) 2021; 13:cancers13184618. [PMID: 34572845 PMCID: PMC8464819 DOI: 10.3390/cancers13184618] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 09/10/2021] [Accepted: 09/10/2021] [Indexed: 12/17/2022] Open
Abstract
Simple Summary The role of circular RNAs has made breakthroughs in understanding the mechanisms of tumor development. Bladder cancer has an increasing incidence, high recurrence rate, high metastatic potential, poor prognosis, and susceptibility to chemotherapy resistance. Thus, it is essential to identify molecules related to the tumorigenesis of bladder cancer. In this review, we summarize current knowledge about the expression of circular RNAs in bladder cancer and their implications in vesical carcinogenesis. We further discuss the limitations of existing studies and provide an outlook for future studies in the hopes of better revealing the association between circular RNAs and bladder cancer. Abstract Bladder cancer (BC) is among the top ten most common cancer types worldwide and is a serious threat to human health. Circular RNAs (circRNAs) are a new class of non-coding RNAs generated by covalently closed loops through back-splicing. As an emerging research hotspot, circRNAs have attracted considerable attention due to their high conservation, stability, abundance, and specificity of tissue development. Accumulating evidence has revealed different form of circRNAs are closely related to the malignant phenotype, prognosis and chemotherapy resistance of BC, suggesting that different circRNAs may be promising biomarkers and have therapeutic significance in BC. The intention of this review is to summarize the mechanisms of circRNA-mediated BC progression and their diagnostic and prognostic value as biomarkers, as well as to further explore their roles in chemotherapy resistance.
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14
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Wang Z, Zhang X, Zhang X, Jiang X. Long noncoding RNA LINC01703 exacerbates the malignant properties of non-small-cell lung cancer by upregulating MACC1 in a microRNA-605-3p-mediated manner. Oncol Res 2021; 28:913-927. [PMID: 34493358 PMCID: PMC8790138 DOI: 10.3727/096504021x16310057751016] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Long intergenic nonprotein coding RNA 1703 (LINC01703) has diagnostic significancein lung adenocarcinoma. However, its specific roles in non-small-cell lung cancer(NSCLC) and downstream mechanisms have not been investigated. In the current study,we characterized the role of LINC01703 in NSCLC malignancy and elucidated itsdetailed mechanism of action. LINC01703 expression was measured by qRT-PCR. Theregulatory effects of LINC01703 on the malignancy of NSCLC cells were assessed bymultiple functional experiments. The targeted interaction was confirmed by RNAimmunoprecipitation and luciferase reporter assays. Herein, overexpression ofLINC01703 in NSCLC was indicated in the TCGA database and further proven in ourcohort. Functional studies revealed that knocking down LINC01703 repressed cellproliferation, colony formation, migration and invasion in vitro, which wasaccompanied by the induction of apoptosis. The tumor growth of LINC01703-silencedcells was also inhibited in vivo. Mechanistic analyses revealed that LINC01703functioned as a competing endogenous RNA for microRNA-605-3p (miR-605-3p) inNSCLC cells, which thereby upregulated the miR-605-3p target metastasis associatedwith colon cancer 1 (MACC1). Rescue experiments highlighted that the regulatoryactions of LINC01703 ablation on NSCLC cells were abolished in response to miR-605-3p downregulation or MACC1 overexpression. In conclusion, LINC01703enhanced the aggressiveness of NSCLC cells by altering miR-605-3p/MACC1. Ourwork suggests the therapeutic potential of LINC01703/miR-605-3p/MACC1 in NSCLC.
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15
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Cheng F, Zheng B, Si S, Wang J, Zhao G, Yao Z, Niu Z, He W. The Roles of CircRNAs in Bladder Cancer: Biomarkers, Tumorigenesis Drivers, and Therapeutic Targets. Front Cell Dev Biol 2021; 9:666863. [PMID: 34350174 PMCID: PMC8326561 DOI: 10.3389/fcell.2021.666863] [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: 02/11/2021] [Accepted: 06/14/2021] [Indexed: 11/30/2022] Open
Abstract
Bladder cancer (BCa) is the most prevalent malignancy of the urinary system. Circular RNAs (circRNAs), a novel subtype of non-coding RNAs, play a crucial role in physiological and developmental processes. CircRNAs mainly function as regulators of splicing process and transcription, microRNA sponges, and protein brackets. Recent advances in understanding the pathogenesis of BCa have led to the identification of an abundance of dysregulated circRNAs associated with BCa. These aberrantly expressed circRNAs eventually lead to abnormalities in biological, genetic, and epigenetic information. In this review, we introduce the potential of circRNAs as biomarkers for BCa diagnosis and prognosis. Notably, diverse mechanisms have been proposed for circRNAs driving carcinogenesis, including increasing cell proliferation, promoting invasive and migratory capacity, enhancing endothelial–mesenchymal transition, sustaining stemness, and enabling resistance to chemotherapy. Importantly, a full understanding of circRNA mechanisms is needed to mine promising therapeutic approaches for targeting BCa. In this paper, we present the latest advances in circRNAs and systemically summarize the characteristics and mechanisms of circRNAs in BCa, providing potential perspectives for BCa treatment.
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Affiliation(s)
- Fajuan Cheng
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Department of Nephrology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Bin Zheng
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Department of Urology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Shubin Si
- Department of Urology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Department of Urology, People's Hospital of Yiyuan County, Zibo, China
| | - Jianwei Wang
- Department of Urology, Shandong Provincial ENT Hospital Affiliated to Shandong University, Jinan, China
| | - Guiting Zhao
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Zhongshun Yao
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Zhihong Niu
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Department of Urology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Wei He
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Department of Urology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
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16
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Zhu J, Zhang F. Circular RNA VANGL1 knockdown suppressed viability, promoted apoptosis, and increased doxorubicin sensitivity through targeting miR-145-5p to regulate SOX4 in bladder cancer cells. Open Med (Wars) 2021; 16:1010-1021. [PMID: 34258391 PMCID: PMC8262520 DOI: 10.1515/med-2021-0299] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 04/13/2021] [Accepted: 04/24/2021] [Indexed: 01/04/2023] Open
Abstract
Background Bladder cancer is a common malignancy in the world. It is reported that circular RNA VANGL1 (circ_VANGL1) was involved in bladder cancer progression. However, the functional role and molecular mechanism of circ_VANGL1 in bladder cancer were still unclear. Methods The levels of circ_VANGL1, microRNA-145-5p (miR-145-5p), and Sex-determining region Y-related high-mobility group box 4 (SOX4) in bladder cancer tissues and cells were determined by quantitative real-time polymerase chain (RT-qPCR). The relative protein expression was detected by western blot. Cell counting kit-8 (CCK8) and flow cytometry analysis were used to measure cell viability, IC50 value, and apoptosis rate. The interaction between miR-145-5p and circ_VANGL1 or SOX4 was predicted by online software starBase v2.0 or Targetscan and verified by the dual-luciferase reporter assay. Besides, xenograft mice model was used to detect the effects of circ_VANGL1 in vivo. Results The level of circ_VANGL1 and SOX4 was increased, while miR-145-5p was decreased in bladder cancer tissues and cells. Knockdown of circ_VANGL1 suppressed viability, while promoted apoptosis and increased doxorubicin sensitivity in bladder cancer cells. Moreover, circ_VANGL1 acted as a sponge for miR-145-5p. In addition, miR-145-5p partially reversed the effects of miR-145-5p knockdown in T24 and J82 cells. SOX4 was a target of miR-145-5p and negatively regulated by miR-145-5p. Furthermore, miR-145-5p regulated SOX4 to affect cell progression in bladder cancer cells, including viability, apoptosis, and doxorubicin sensitivity. Besides, circ_VANGL1 suppressed tumor growth and enhanced the doxorubicin sensitivity in bladder cancer in vivo. Conclusion circ_VANGL1 mediated cell viability, apoptosis, and doxorubicin sensitivity by regulating miR-145-5p/SOX4 axis in bladder cancer, providing a potential therapeutic target for bladder cancer therapy.
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Affiliation(s)
- Jiangbo Zhu
- Department of Urology, Taizhou First People's Hospital, Huangyan District, 318020, Taizhou, China
| | - Fei Zhang
- Department of Urology, Hwa Mei Hospital, University of Chinese Academy of Sciences (Ningbo No.2 Hospital), No. 41, Northwest Street, Haishu District, 315000, NingBo, China
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17
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Ye W, Chen L, Feng C, Liang T. CircMYLK promotes the growth, migration, invasion, and survival of bladder cancer cells by upregulating CCND3 level via competitively binding to miR-34a. Drug Dev Res 2021; 82:1206-1216. [PMID: 34056735 DOI: 10.1002/ddr.21835] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 04/09/2021] [Accepted: 05/06/2021] [Indexed: 01/23/2023]
Abstract
Bladder cancer is one of the most common types of urothelial carcinoma with a rising incidence rate worldwide. Circular RNAs (circRNAs) are involved in the development of numerous cancers, including bladder cancer. We aimed to uncover the role and associated mechanism of circMYLK in bladder cancer. The expression levels of circMYLK, miRNA-34a (miR-34a) and Cyclin D3 (CCND3) mRNA were investigated using real-time quantitative polymerase chain reaction. The protein level of CCND3 was investigated using western blot. In functional assays, flow cytometry assays were utilized for cell cycle analysis and cell apoptosis analysis. Transwell assays were used for cell migration and invasion analysis. Caspase-3 activity was examined to monitor cell apoptosis. The putative relationship between miR-34a and circMYLK or CCND3 was validated by dual-luciferase reporter assay and RNA immunoprecipitation assay. CircMYLK was highly expressed in bladder cancer tissues and cells. CircMYLK downregulation inhibited bladder cancer cell migration and invasion, and promoted cancer cell apoptosis and cell cycle arrest. MiR-34a, a target of circMYLK, was downregulated in bladder cancer tissues and cells. MiR-34a inhibition reversed the effects of circMYLK downregulation and then recovered bladder cell malignant behaviors. Further analysis showed that CCND3 was a downstream target of miR-34a, and CCND3 was upregulated in bladder cancer tissues and cells. MiR-34a overexpression blocked bladder cancer cell migration and invasion, and induced cell apoptosis and cycle arrest, while these effects were abolished by CCND3 overexpression. CircMYLK contributed to the malignant development of bladder cancer cells partly through the miR-34a/CCND3 regulatory network, showing the significance of circMYLK in bladder cancer pathogenesis.
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Affiliation(s)
- Wenxin Ye
- Department of Urology, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Li Chen
- Department of Urology, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Chao Feng
- Department of Urology, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Tiejun Liang
- Department of Urology, Xinchang County People's Hospital, Xinchang, China
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18
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Li S, Liu Y, Qiu G, Luo Y, Li X, Meng F, Li N, Xu T, Wang Y, Qin B, Xia S. Emerging roles of circular RNAs in non‑small cell lung cancer (Review). Oncol Rep 2021; 45:17. [PMID: 33649862 PMCID: PMC7876988 DOI: 10.3892/or.2021.7968] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Accepted: 01/04/2021] [Indexed: 12/11/2022] Open
Abstract
Circular RNAs (circRNAs) are a class of novel endogenous transcripts with limited protein‑coding abilities. CircRNAs have been demonstrated to function as critical regulators of tumor development and distant metastasis through binding to microRNAs (miRNAs) and interacting with RNA‑binding proteins, thereby regulating transcription and translation. Emerging evidence has illustrated that certain circRNAs can serve as biomarkers for diagnosis and prognosis of cancer, and/or serve as potential therapeutic targets. Expression of functional circRNAs is commonly dysregulated in cancer and this is correlated with advanced Tumor‑Node‑Metastasis stage, lymph node status, distant metastasis, poor differentiation and shorter overall survival of cancer patients. Recently, an increasing number of studies have shown that circRNAs are closely associated with NSCLC. Functional experiments have revealed that circRNAs are intricately associated with the pathological progression of NSCLC. The present review provides an overview of the regulatory effect of circRNAs in the development and progression of NSCLC, taking into consideration various physiological and pathological processes, such as proliferation, apoptosis, invasion and migration, and their potential value as biomarkers and therapeutic targets.
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Affiliation(s)
- Shanshan Li
- Department of Respiratory, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
| | - Yize Liu
- Fourth Department of Orthopedic Surgery, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
| | - Guanzhen Qiu
- Fourth Department of Orthopedic Surgery, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
| | - Yinzhou Luo
- Fourth Department of Orthopedic Surgery, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
| | - Xiang Li
- Department of Respiratory, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
| | - Fei Meng
- Department of Gynaecology and Obstetrics, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
| | - Nanyang Li
- Department of Pathology, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
| | - Tiance Xu
- Second Department of Neurology, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
| | - Yong Wang
- Fourth Department of Orthopedic Surgery, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
- Central Laboratory, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
| | - Baoli Qin
- Department of Internal Medicine, Cancer Hospital of China Medical University/Liaoning Cancer Hospital and Institute, Shenyang, Liaoning 110042, P.R. China
| | - Shuyue Xia
- Department of Respiratory, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
- Dean's Office, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
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Kong X, Zhang H, Huang J, Yan L, Sha L, Jiang H. Silencing Circ_0005075 Inhibits the Invasion and Migration of Colon Cancer Cells and Induces Apoptosis. J BIOMATER TISS ENG 2021. [DOI: 10.1166/jbt.2021.2504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Colon cancer is a common malignancy of the digestive tract, mostly occurring at the junction of the rectum and colon. It easily invades multiple internal organs and tissues, causing systemic injury and mortality to patients. The occurrence and development of colon cancer involve multiple
genes and multiple factors. It is greatly significant to identify oncogenes and tumor suppressor genes that influence the development of colon cancer and to study their mechanism of action for colon cancer diagnosis and treatment. Furthermore, circRNA are involved in the development of several
types of tumors by affecting miRNA regulation on target gene expression. In the present study, circ_0005075 siRNA and circ_0005075 siRNA + mir-335 inhibitor were transfected into colon cancer SW620 cells, and circ_0005075 gene expression was significantly decreased after transfecting circ_0005075
siRNA into SW620 cells. Silencing circ_0005075 expression significantly inhibited SW620 cell proliferation, invasion, and migration, and promoted apoptosis, downregulated PCNA and vimentin expression, and upregulated E-cadherin and cleaved caspase3 expression. After circ_0005075 siRNA + mir-335
was transfected, it inhibited circ_0005075 and mir-335 expression, which significantly affected the vigor, invasion and migration ability, apoptosis rate of SW620 cells, as well as PCNA, E-cadherin, vimentin, and cleaved caspase3 expression. Therefore, the present study demonstrated that circ_0005075
silencing inhibited the proliferation, invasion, and migration of SW620 cells and promoted apoptosis by upregulating mir-335 expression.
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Affiliation(s)
- Xiancheng Kong
- Department of General Surgery, Shuguang Hospital Affiliated to Shanghai University of Chinese Medicine, Shanghai 200030, Shanghai, PR China
| | - Hao Zhang
- Department of General Surgery, Shuguang Hospital Affiliated to Shanghai University of Chinese Medicine, Shanghai 200030, Shanghai, PR China
| | - Jianping Huang
- Department of General Surgery, Shuguang Hospital Affiliated to Shanghai University of Chinese Medicine, Shanghai 200030, Shanghai, PR China
| | - Liang Yan
- Department of General Surgery, Shuguang Hospital Affiliated to Shanghai University of Chinese Medicine, Shanghai 200030, Shanghai, PR China
| | - Li Sha
- Department of General Surgery, Shuguang Hospital Affiliated to Shanghai University of Chinese Medicine, Shanghai 200030, Shanghai, PR China
| | - Haifeng Jiang
- Department of General Surgery, Shuguang Hospital Affiliated to Shanghai University of Chinese Medicine, Shanghai 200030, Shanghai, PR China
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20
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Wang X, Li H, Lu Y, Cheng L. Regulatory Effects of Circular RNAs on Host Genes in Human Cancer. Front Oncol 2021; 10:586163. [PMID: 33643900 PMCID: PMC7905086 DOI: 10.3389/fonc.2020.586163] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 12/30/2020] [Indexed: 11/20/2022] Open
Abstract
Circular RNAs (circRNAs) are a class of single-stranded, covalent closed-loop RNAs with tissue-/development-specific expression patterns. circRNAs are stable and play oncogenic or tumor suppressive roles in various aspects of cancer, including tumorigenesis, proliferation, apoptosis, metastasis, invasion, chemo-therapeutic resistance, and prognosis. circRNAs act as miRNA/protein sponges, protein scaffold, or template for translation. Increasing evidence shows circRNAs contribute to cancer progression via modulating the expression or function of their host genes. In this review, we summarize the latest progress in the regulation of host genes by circRNAs in human cancer. The works on circRNAs mediated regulation of host genes enhance us to understand the interaction between circRNAs and their host genes in human cancer.
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Affiliation(s)
- Xiong Wang
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Huijun Li
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Yanjun Lu
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Liming Cheng
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
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21
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Wang X, Li H, Lu Y, Cheng L. Circular RNAs in Human Cancer. Front Oncol 2021; 10:577118. [PMID: 33537235 PMCID: PMC7848167 DOI: 10.3389/fonc.2020.577118] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Accepted: 12/02/2020] [Indexed: 01/17/2023] Open
Abstract
Circular RNAs (circRNAs) are a class of endogenous single-stranded covalently closed RNAs, primarily produced from pre-mRNAs via non-canonical back-splicing. circRNAs are highly conserved, stable, and expressed in tissue- and development-specific pattern. circRNAs play essential roles in physiological process as well as cancer biology. By the advances of deep sequencing and bioinformatics, the number of circRNAs have increased explosively. circRNAs function as miRNA/protein sponge, protein scaffold, protein recruitment, enhancer of protein function, as well as templates for translation involved in the regulation of transcription/splicing, translation, protein degradation, and pri-miRNA processing in human cancers and contributed to the pathogenesis of cancer. Numerous circRNAs may function in diverse manners. In this review, we survey the current understanding of circRNA functions in human cancer including miRNA sponge, circRNA-protein interaction, and circRNA-encoded protein, and summarize available databases for circRNA annotation and functional prediction.
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Affiliation(s)
| | | | - Yanjun Lu
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Liming Cheng
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
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22
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Liang Z, Guo W, Fang S, Zhang Y, Lu L, Xu W, Qian H. CircRNAs: Emerging Bladder Cancer Biomarkers and Targets. Front Oncol 2021; 10:606485. [PMID: 33489913 PMCID: PMC7821354 DOI: 10.3389/fonc.2020.606485] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 11/24/2020] [Indexed: 12/14/2022] Open
Abstract
Circular RNAs (circRNAs) are newly discovered intriguing RNAs due to the covalently closed loop structure, high stability, tissue specificity, and functional diversity. In recent years, a large number of circRNAs have been identified through high-throughput sequencing technology and bioinformatics methods, the abnormal expression of circRNAs are closely related to many diseases including bladder cancer (BC). CircRNAs have been proven to have several functions, such as acting as a regulator of parental gene transcription, miRNA sponge and interacting with proteins to regulate its expression. In addition, some circRNAs have been identified to encode proteins. CircRNAs have the characteristics of high abundance, high stability, wide distribution in body fluids, tissue specificity, and developmental stage specificity, which determine that circRNAs has great potential to be utilized as biomarkers for BC. Herein, we briefly summarize the biogenesis, functions and roles, and the current research progress of circRNAs in BC with a focus on the potential application for BC diagnosis, treatment, and prognosis.
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Affiliation(s)
- Zhaofeng Liang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Wenhao Guo
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Shikun Fang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Yue Zhang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Ling Lu
- Women and Children Health Hospital of Zhenjiang, Zhenjiang, Jiangsu, China
| | - Wenrong Xu
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Hui Qian
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
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23
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Yang X, Ye T, Liu H, Lv P, Duan C, Wu X, Jiang K, Lu H, Xia D, Peng E, Chen Z, Tang K, Ye Z. Expression profiles, biological functions and clinical significance of circRNAs in bladder cancer. Mol Cancer 2021; 20:4. [PMID: 33397425 PMCID: PMC7780637 DOI: 10.1186/s12943-020-01300-8] [Citation(s) in RCA: 106] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 12/21/2020] [Indexed: 02/06/2023] Open
Abstract
Circular RNAs (circRNAs), which are single-stranded closed-loop RNA molecules lacking terminal 5′ caps and 3′ poly(A) tails, are attracting increasing scientific attention for their crucial regulatory roles in the occurrence and development of various diseases. With the rapid development of high-throughput sequencing technologies, increasing numbers of differentially expressed circRNAs have been identified in bladder cancer (BCa) via exploration of the expression profiles of BCa and normal tissues and cell lines. CircRNAs are critically involved in BCa biological behaviours, including cell proliferation, tumour growth suppression, cell cycle arrest, apoptosis, invasion, migration, metastasis, angiogenesis, and cisplatin chemoresistance. Most of the studied circRNAs in BCa regulate cancer biological behaviours via miRNA sponging regulatory mechanisms. CircRNAs have been reported to be significantly associated with many clinicopathologic characteristics of BCa, including tumour size, grade, differentiation, and stage; lymph node metastasis; tumour numbers; distant metastasis; invasion; and recurrence. Moreover, circRNA expression levels can be used to predict BCa patients’ survival parameters, such as overall survival (OS), disease-free survival (DFS), and progression-free survival (PFS). The abundance, conservation, stability, specificity and detectability of circRNAs render them potential diagnostic and prognostic biomarkers for BCa. Additionally, circRNAs play crucial regulatory roles upstream of various signalling pathways related to BCa carcinogenesis and progression, reflecting their potential as therapeutic targets for BCa. Herein, we briefly summarize the expression profiles, biological functions and mechanisms of circRNAs and the potential clinical applications of these molecules for BCa diagnosis, prognosis, and targeted therapy.
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Affiliation(s)
- Xiaoqi Yang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tao Ye
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Haoran Liu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Peng Lv
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chen Duan
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoliang Wu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kehua Jiang
- Department of Urology, Guizhou Provincial People's Hospital, Guiyang, China
| | - Hongyan Lu
- Department of Urology, The Third Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Ding Xia
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ejun Peng
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhiqiang Chen
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kun Tang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Zhangqun Ye
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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24
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Shao T, Pan YH, Xiong XD. Circular RNA: an important player with multiple facets to regulate its parental gene expression. MOLECULAR THERAPY-NUCLEIC ACIDS 2020; 23:369-376. [PMID: 33425494 PMCID: PMC7779830 DOI: 10.1016/j.omtn.2020.11.008] [Citation(s) in RCA: 84] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Circular RNAs (circRNAs), a novel type of endogenous RNAs with covalently closed-loop structures, have become a new research hotspot in the RNA world. Their diversity, stability, evolutionary conservation, and cell type- or tissue-specific expression patterns endow circRNAs with various important biological functions. As a consequence, circRNAs are emerging as important regulators of physiological development and disease pathogenesis. Growing evidence has shown that circRNAs can regulate parental gene expression through diverse mechanisms, such as transcription and splicing regulation, microRNA (miRNA) sponges, mRNA traps, translational modulation, and post-translational modification. The study of circRNAs and how circRNAs regulate the expression of parental genes will facilitate a deeper understanding of their biological functions and provide new perspectives on their clinical application. Herein, we review the biogenesis of circRNAs, with a particular focus on the molecular mechanisms of circRNAs regulating their parental gene expression and the biological significance of such regulation.
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Affiliation(s)
- Tong Shao
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research, Guangdong Medical University, Dongguan 523808, P.R. China.,Institute of Biochemistry & Molecular Biology, Guangdong Medical University, Zhanjiang 524023, P.R. China
| | - Yan-Hong Pan
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research, Guangdong Medical University, Dongguan 523808, P.R. China.,Institute of Biochemistry & Molecular Biology, Guangdong Medical University, Zhanjiang 524023, P.R. China
| | - Xing-Dong Xiong
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research, Guangdong Medical University, Dongguan 523808, P.R. China.,Institute of Biochemistry & Molecular Biology, Guangdong Medical University, Zhanjiang 524023, P.R. China
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25
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Wang S, Fu S, Chen Q, Liu Y, Li Z, Sun T. Prognostic Role of Circular RNAs Expression in Bladder Carcinoma: A Meta-Analysis. Genet Test Mol Biomarkers 2020; 24:692-700. [PMID: 33030352 DOI: 10.1089/gtmb.2020.0079] [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: 01/11/2023] Open
Abstract
Background: Circular RNAs (circRNAs), a type of noncoding RNA, are associated with the occurrence and development of cancers. In recent years, their potential as biomarkers for bladder cancer (BC) has attracted increased attention. Aims: To reveal the value of circRNAs in the prognosis of BC. Methods: Relevant studies were collected to extract the clinicopathological data and overall survival (OS) of patients with BC. We then evaluated their tumor-related clinicopathological indicators using pooled odds ratio (OR) and 95% confidence interval (CI). Hazard ratio (HR) and 95% CI were used to estimate the OS of BC patients who expressed abnormal circRNAs. Results: The results indicate that seven circRNAs (circMYLK, circASXL1, hsa_circ_0000144, circ-VANGL1, circGprc5a, circZFR, and circ-cTFRC) whose expression was upregulated in tumor tissues, are associated with poor clinicopathological features (tumor/node/metastasis [TNM] stage: OR = 4.86, 95% CI: 2.53-9.34; histological grade: OR = 3.71, 95% CI: 2.37-5.79; lymph node metastasis: OR = 3.23; 95% CI: 2.15-4.88; recurrence: OR = 5.33; 95% CI: 2.27-12.52) and poor prognoses (OS: HR = 1.69; 95% CI: 1.17-2.44). We also found that seven circRNAs (circMTO1, circ-ITCH, circUBXN7, circFNDC3B, circ-ZKSCAN1, circPICALM, and circACVR2A) that were downregulated in tumors were associated with better clinicopathological indicators (TNM stage: OR = 0.23, 95% CI: 0.14-0.38; histological grade: OR = 0.21, 95% CI: 0.13-0.33; lymph node metastasis: OR = 0.26; 95% CI: 0.15-0.47) and better prognoses (OS: HR = 0.42; 95% CI: 0.30-0.58). Conclusion: Our results suggest that certain circRNAs are related to the clinicopathological characteristics and prognosis of BC patients, and may potentially be used as biomarkers.
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Affiliation(s)
- Siyuan Wang
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Shengqiang Fu
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Qiang Chen
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Yutang Liu
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Zhilong Li
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Ting Sun
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
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26
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Cai Z, Li H. Circular RNAs and Bladder Cancer. Onco Targets Ther 2020; 13:9573-9586. [PMID: 33061440 PMCID: PMC7535116 DOI: 10.2147/ott.s268859] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 09/03/2020] [Indexed: 12/17/2022] Open
Abstract
Bladder cancer (BC) is the most common urinary system malignancy and is a serious threat to human health. Circular RNAs (circRNAs) are members of a newly defined class of noncoding RNAs (ncRNAs) that can regulate gene expression at the transcriptional or posttranscriptional level. Studies have shown that circRNAs are related to the clinicopathological characteristics, prognosis, and chemosensitivity of BC, and basic research has further confirmed that changes in the expression of circRNAs in BC are closely related to various tumor biological functions. CircRNAs promote tumor development by interacting with miRNAs to regulate transcription factors and both classical and nonclassical tumor signaling pathways. The nonclassical signaling pathways are related to cell cycle progression, epithelial–mesenchymal transition (EMT), extracellular matrix maintenance, and tumor stem cell maintenance. In this article, the relationships between circRNAs and the clinical characteristics of BC are reviewed, and the molecular mechanisms by which circRNAs promote tumor development are explored.
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Affiliation(s)
- Zhonglin Cai
- Department of Urology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Hongjun Li
- Department of Urology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
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27
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Abstract
Circular RNAs (circRNAs) are covalently circularized RNA moieties that despite being relatively abundant were only recently identified and have only begun to be investigated within the last couple of years. Even though there are many thousands of genes that appear capable of producing circRNAs, and the fact that many circRNAs appear to be highly evolutionarily conserved, the function of all but a few remain to be fully explored. What has been determined, however, is that circRNAs play key regulatory roles in many aspects of biology with focus being given to their function in cancer. Most of the studies to date have found that circRNAs act as master regulator of gene expression most often than not acting to regulate levels though sequestration or "sponging" of other gene expression regulators, particularly miRNAs. They can also function directly modulating transcription, or by interfering with splicing mechanisms. Some circRNAs can also be translated into functional proteins or peptides. A combination of tissue and developmental stage specific expression along with an innate resistance to RNAse activity means that circRNAs show perhaps their greatest potential as novel biomarkers of cancer. In this chapter we consider the current state of knowledge regarding these molecules, their synthesis, function, and association with cancer. We also consider some of the challenges that remain to be overcome to allow this emerging class of RNAs to fulfill their potential in clinical practice.
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Affiliation(s)
- Carla Solé
- Molecular Oncology Group, Biodonostia Research Institute, San Sebastián, Spain
| | - Charles Henderson Lawrie
- Molecular Oncology Group, Biodonostia Research Institute, San Sebastián, Spain; IKERBASQUE, Basque Foundation for Science, Bilbao, Spain; Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom.
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28
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Construction of circRNA-Associated ceRNA Network Reveals Novel Biomarkers for Esophageal Cancer. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2020; 2020:7958362. [PMID: 32908582 PMCID: PMC7474783 DOI: 10.1155/2020/7958362] [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: 06/07/2020] [Accepted: 07/27/2020] [Indexed: 02/08/2023]
Abstract
Objective Esophageal cancer (ESCC) is reported to be the eighth most common malignant tumors worldwide with high mortality. However, the functions of majority circRNAs in ESCC requires to be further explored. Methods This study identified differently expressed circRNAs in 3 paired ESCC using RNA-sequencing method. The interactions among circRNAs, miRNAs, and mRNAs were predicted using bioinformatics analysis. Results In this study, using RNA-sequencing method and integrated bioinformatics analysis, 418 overexpressed circRNAs and 637 reduced circRNAs in ESCC sample were identified. Based on the mechanism that circRNAs could play as ceRNAs to modulate targets expression, circRNA-miRNA and circRNA-miRNA-mRNA networks were constructed in this study. Based on the network analysis, 7 circRNAs, including circ_0002255, circ_0000530, circ_0001904, circ_0001005, circ_0000513, circ_0000075, and circ_0001121, were identified as key circRNAs in ESCC. We found that circ_0002255 was related to the regulation of substrate adhesion-dependent cell spreading. circ_0001121 was involved in regulating nucleocytoplasmic transport. circ_0000513 played a key role in regulating Adherens junction, B cell receptor signaling pathway. Meanwhile, we observed circ_0000075 was involved in regulating zinc II ion transport, transition metal ion homeostasis, and angiogenesis. Conclusion We thought this study could provide novel biomarkers for the prognosis of ESCC.
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29
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Yi Z, Li Y, Wu Y, Zeng B, Li H, Ren G, Wang X. Circular RNA 0001073 Attenuates Malignant Biological Behaviours in Breast Cancer Cell and Is Delivered by Nanoparticles to Inhibit Mice Tumour Growth. Onco Targets Ther 2020; 13:6157-6169. [PMID: 32636640 PMCID: PMC7334238 DOI: 10.2147/ott.s248822] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 06/16/2020] [Indexed: 12/13/2022] Open
Abstract
Background Circular RNAs (circRNAs) are a special class of noncoding RNAs that are involved in gene regulation and compete with mRNA for miRNA binding sites. The roles of circRNAs in cancer, especially breast cancer (BC), are poorly understood. Materials and Methods The expression levels of circRNA 0001073 (circ-1073) in BC cells (BCCs) and tissues and peritumoural tissues were detected by real-time quantitative reverse transcription-polymerase chain reaction. Kaplan–Meier analysis and receiver operating characteristic curves were used to evaluate relapse-free survival (RFS) and the diagnostic value of circ-1073 for BC, respectively. The biological functions of circ-1073 were determined by cell counting kit-8 assays, colony formation assays, flow cytometry, wound-healing assays, transwell assays, and xenograft model studies. RNA immunoprecipitation assays were conducted to identify the connection between circ-1073 and human antigen R (HuR). Results Low circ-1073 expression was discovered in BCCs and BC tissues compared with normal mammary epithelial cells and peritumoural tissues, respectively. Circ-1073 downregulation was significantly associated with an unfavourable prognosis, including a shorter RFS, in BC patients. Circ-1073 is a valuable diagnostic biomarker for BC. Circ-1073 overexpression significantly inhibited BCC proliferation and induced apoptosis by increasing Cleaved Caspase-3/9 levels. Moreover, circ-1073 upregulation significantly suppressed cell mobility and epithelial–mesenchymal transition. Notably, xenograft tumour growth was inhibited by the intratumoural injection of nanoparticles containing the circ-1073 plasmid or by circ-1073 overexpression, and this inhibition was accompanied by HuR upregulation. Conclusion Circ-1073 functions as a tumour suppressor in BC, suggesting its potential as a novel therapeutic target in BC.
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Affiliation(s)
- Ziying Yi
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.,Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Yunhai Li
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.,Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Yushen Wu
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Beilei Zeng
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Hongzhong Li
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.,Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Guosheng Ren
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.,Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Xiaoyi Wang
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
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30
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Hu YL, Feng Y, Chen YY, Liu JZ, Su Y, Li P, Huang H, Mao QS, Xue WJ. SNHG16/miR-605-3p/TRAF6/NF-κB feedback loop regulates hepatocellular carcinoma metastasis. J Cell Mol Med 2020; 24:7637-7651. [PMID: 32436333 PMCID: PMC7339162 DOI: 10.1111/jcmm.15399] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 03/30/2020] [Accepted: 04/27/2020] [Indexed: 01/27/2023] Open
Abstract
The mechanism by which miR‐605‐3p regulates hepatocellular carcinoma (HCC) metastasis has not been clarified. In this study, we found that miR‐605‐3p was down‐regulated in HCC and that low miR‐605‐3p expression was associated with tumour thrombus and tumour satellites. HCC patients with low miR‐605‐3p expression showed shorter overall survival and disease‐free survival after surgery. Overexpression of miR‐605‐3p inhibited epithelial‐mesenchymal transition and metastasis of HCC through NF‐κB signalling by directly inhibiting expression of TRAF6, while silencing of miR‐605‐3p had the opposite effect. We also found that SNHG16 directly bound to miR‐605‐3p as a competing endogenous RNA. Mechanistically, high expression of SNHG16 promoted binding to miR‐605‐3p and inhibited its activity, which led to up‐regulation of TRAF6 and sustained activation of the NF‐κB pathway, which in turn promoted epithelial‐mesenchymal transition and metastasis of HCC. TRAF6 increased SNHG16 promoter activity by activating NF‐κB, thereby promoting the transcriptional expression of SNHG16 and forming a positive feedback loop that aggravated HCC malignancy. Our findings reveal a mechanism for the sustained activation of the SNHG16/miR‐605‐3p/TRAF6/NF‐κB feedback loop in HCC and provide a potential target for a new HCC treatment strategy.
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Affiliation(s)
- Yi-Lin Hu
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, China.,Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, China
| | - Ying Feng
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, China.,Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, China
| | - Yu-Yan Chen
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, China.,Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, China
| | - Jia-Zhou Liu
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, China.,Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, China
| | - Yang Su
- Department of Surgery, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huaian, China
| | - Peng Li
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, China
| | - Hua Huang
- Department of Pathology, Affiliated Hospital of Nantong University, Nantong, China
| | - Qin-Sheng Mao
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, China
| | - Wan-Jiang Xue
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, China.,Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, China
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31
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Li C, Fu X, He H, Chen C, Wang Y, He L. The Biogenesis, Functions, and Roles of circRNAs in Bladder Cancer. Cancer Manag Res 2020; 12:3673-3689. [PMID: 32547204 PMCID: PMC7245432 DOI: 10.2147/cmar.s245233] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Accepted: 04/16/2020] [Indexed: 01/16/2023] Open
Abstract
Bladder cancer (BCa) is the 10th most prevalent malignancy worldwide and remains a crucial cause of cancer-related morbidity and mortality. Circular RNAs (circRNAs), a large class of endogenous non-coding RNAs, contain unique covalent closed structures and their biogenesis and turnover are regulated by multiple factors. Recently, multiple circRNAs have been found to serve as important factors in several biological processes such as tumorigenesis. An increasing amount of research discovered that circRNAs are dysregulated in multiple cancer tissues compared with matched normal tissues, especially in BCa, indicating that circRNAs can act as biomarkers for the diagnosis and prognosis of BCa. In this review, we focus on the biogenesis, properties, turnover, and functions of circRNAs, summarizing their potential functions and clinical implications in BCa.
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Affiliation(s)
- Changjiu Li
- Department of Urology, Affiliated Hangzhou First People's Hospital, Nanjing Medical University, Hangzhou 310006, Zhejiang Province, People's Republic of China
| | - Xian Fu
- Department of Urology, Affiliated Hangzhou First People's Hospital, Zhejiang University, Hangzhou 310006, Zhejiang Province, People's Republic of China
| | - Huadong He
- Department of Urology, Affiliated Hangzhou First People's Hospital, Nanjing Medical University, Hangzhou 310006, Zhejiang Province, People's Republic of China
| | - Chao Chen
- Department of Urology, Affiliated Hangzhou First People's Hospital, Zhejiang University, Hangzhou 310006, Zhejiang Province, People's Republic of China
| | - Yuyong Wang
- Department of Urology, Affiliated Hangzhou First People's Hospital, Zhejiang University, Hangzhou 310006, Zhejiang Province, People's Republic of China
| | - Lugeng He
- Department of Urology, Affiliated Hangzhou First People's Hospital, Zhejiang University, Hangzhou 310006, Zhejiang Province, People's Republic of China
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32
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Li Y, Li G, Guo X, Yao H, Wang G, Li C. Non-coding RNA in bladder cancer. Cancer Lett 2020; 485:38-44. [PMID: 32437725 DOI: 10.1016/j.canlet.2020.04.023] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/26/2020] [Accepted: 04/24/2020] [Indexed: 12/24/2022]
Abstract
Bladder cancer is the tenth most common cancer worldwide and has been associated with high mortality and morbidity. Although the treatment of bladder cancer is based on well-defined tumor classifications and gradings, patients still experience different clinical response. The heterogeneity of this disease calls for substantial research with more in-depth molecular characterization, with the hope of identifying new diagnostic and treatment options. In recent years, non-coding RNAs (ncRNAs), particularly, microRNAs (miRNAs), long non-coding RNA (lncRNAs), and circular RNAs (circRNAs) were found to be associated with bladder cancer occurrence and development. This review highlights the recent findings concerning ncRNAs and their relevance to the pathogenesis of bladder cancer. This may provide a foundation for developing highly specific diagnostic tools and more robust therapeutic strategies in the future.
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Affiliation(s)
- Yi Li
- Department of Anesthesiology, Peking University Third Hospital (PUTH), Beijing, China
| | - Gang Li
- Department of Anesthesiology, Peking University Third Hospital (PUTH), Beijing, China
| | - Xiangyang Guo
- Department of Anesthesiology, Peking University Third Hospital (PUTH), Beijing, China
| | - Haochen Yao
- College of Basic Medical Science, Jilin University (JUT), Changchun, Jilin, China
| | - Guoqing Wang
- College of Basic Medical Science, Jilin University (JUT), Changchun, Jilin, China.
| | - Chong Li
- Core Facility for Protein Research, Institute of Biophysics Chinese Academy of Sciences (IBPCAS), Beijing, China; Beijing Jianlan Institute of Medicine, Beijing, China; Beijing Zhongke Jianlan Biotechnology Co., Ltd., Beijing, China.
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33
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Liu Y, Chen S, Zong ZH, Guan X, Zhao Y. CircRNA WHSC1 targets the miR-646/NPM1 pathway to promote the development of endometrial cancer. J Cell Mol Med 2020; 24:6898-6907. [PMID: 32378344 PMCID: PMC7299690 DOI: 10.1111/jcmm.15346] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 12/25/2019] [Accepted: 04/12/2020] [Indexed: 12/16/2022] Open
Abstract
Circular RNAs (circRNAs) play important roles in human cancer progression. Their high stability and tissue specificity make circRNAs important molecular targets for clinical diagnosis, treatment and prognosis. However, the functions and molecular mechanisms of circRNA WHSC1 in endometrial cancer are unknown. CircWHSC1 expression in normal endometrial and endometrial cancer tissues was detected using PCR. Overexpression or knockdown of circWHSC1 in endometrial cancer cell lines HEC‐1B or Ishikawa, respectively, cell function experiments were used to detect the impact of circWHSC1 on endometrial cancer cells. A nude mouse xenograft model was used to detect changes in tumorigenesis of HEC‐1B cells after circWHSC1 overexpression. Bioinformatics and dual luciferase reporter gene technology were used to predict and validate the sponging ability of circWHSC1 on microRNAs. Gene expression changes were detected by using Western blotting. CircWHSC1 expression was increased in endometrial cancer tissues. CircWHSC1 overexpression promoted the proliferation, migration and invasion of endometrial cancer cells and decreased apoptosis. CircWHSC1 knockdown had the opposite effect. CircWHSC1 overexpressed nude mice showed increased tumorigenicity. Bioinformatics predicted that circWHSC1 binds to miR‐646, which was confirmed using luciferase reporter gene assays. High expression of miR‐646 could reverse the effect of circWHSC1 on endometrial cancer cells. Western blotting showed increased or decreased levels of nucleophosmin 1 (NPM1), an miR‐646 downstream target, after circWHSC1 overexpression or knockdown, respectively. CircWHSC1 promotes endometrial cancer development through sponging miR‐646 and targeting NPM1.
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Affiliation(s)
- Yao Liu
- Department of Gynecologic Oncology Research Office, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Department of Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institute in Guangdong Province, Guangzhou, China
| | - Shuo Chen
- Department of Gynecology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Zhi-Hong Zong
- Department of Gynecology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Xue Guan
- Department of Gynecology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Yang Zhao
- Department of Gynecologic Oncology Research Office, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Department of Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institute in Guangdong Province, Guangzhou, China
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Lv X, Li Y, Li H, Zhou L, Wang B, Zhi Z, Tang W. Molecular function predictions and diagnostic value analysis of plasma exosomal miRNAs in Hirschsprung's disease. Epigenomics 2020; 12:409-422. [PMID: 32297806 DOI: 10.2217/epi-2019-0190] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Aim: To discover the potential roles of plasma exosomal miRNAs in Hirschsprung's disease (HSCR) and identify potential noninvasive biomarkers for early diagnosis of HSCR. Materials & methods: Plasma samples were collected from HSCR patients and matched controls. Exosomes were isolated before high-throughput Illumina sequencing was utilized to gain a profile of dysregulated exosomal miRNAs, followed with further verification in two separate cohorts. Bioinformatics analyses were also adopted to explore the molecular functions of dysregulated miRNAs in Hirschsprung's disease. Results & conclusion: 31 dysregulated miRNAs were identified with five considered as promising HSCR signatures. Gene enrichment analysis disclosed that the upregulated miRNAs were most likely to participate in 'extracellular matrix-receptor interaction' and contribute to HSCR through interfering in cell junctions.
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Affiliation(s)
- Xiurui Lv
- Department of Pediatric Surgery, Children's Hospital of Nanjing Medical University, Nanjing, PR China.,State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, PR China
| | - Yuhan Li
- Department of Pediatric Surgery, Children's Hospital of Nanjing Medical University, Nanjing, PR China.,State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, PR China
| | - Hongxing Li
- Department of Pediatric Surgery, Children's Hospital of Nanjing Medical University, Nanjing, PR China.,State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, PR China
| | - Lingling Zhou
- Department of Pediatric Surgery, Children's Hospital of Nanjing Medical University, Nanjing, PR China.,State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, PR China
| | - Binyu Wang
- Department of Pediatric Surgery, Children's Hospital of Nanjing Medical University, Nanjing, PR China.,State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, PR China
| | - Zhengke Zhi
- Department of Pediatric Surgery, Children's Hospital of Nanjing Medical University, Nanjing, PR China.,State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, PR China
| | - Weibing Tang
- Department of Pediatric Surgery, Children's Hospital of Nanjing Medical University, Nanjing, PR China.,State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, PR China
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Shen C, Wu Z, Wang Y, Gao S, Da L, Xie L, Qie Y, Tian D, Hu H. Downregulated hsa_circ_0077837 and hsa_circ_0004826, facilitate bladder cancer progression and predict poor prognosis for bladder cancer patients. Cancer Med 2020; 9:3885-3903. [PMID: 32250047 PMCID: PMC7286451 DOI: 10.1002/cam4.3006] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 02/24/2020] [Accepted: 03/02/2020] [Indexed: 02/06/2023] Open
Abstract
Growing evidence has indicated that circular RNAs (circRNAs) play crucial roles in multiple biological processes. However, alterations in circRNA profiles during bladder cancer progression and the clinical significance thereof remain unclear. Therefore, high‐throughput RNA sequencing was conducted to identify circRNA and mRNA profiles in five pairs of bladder cancer tissues and adjacent noncancerous tissues. A total of 87 differentially expressed circRNAs and 2756 mRNAs were detected in above bladder cancer samples compared with paired noncancerous samples. Functional enrichment analyses, circRNA‐microRNA‐mRNA, and protein‐protein interaction networks revealed that these dysregulated circRNAs were potentially involved in carcinogenesis and evolution of bladder cancer. Subsequently, the differential expression of eight circRNAs was detected by real‐time qPCR. Hsa_circ_0003141 and hsa_circ_0008039 were significantly upregulated as well as hsa_circ_0026782, hsa_circ_0077837, hsa_circ_0004826, and hsa_circ_0001946 were significantly downregulated among validation of 70 matched bladder cancer tissues (≥75%). Moreover, hsa_circ_0077837 and hsa_circ_0004826 were also verified as markedly downregulated in four bladder cancer cells (100%). Naturally, hsa_circ_0077837 and hsa_circ_0004826 were also demonstrated using RNase‐R+ resistance experiments. In addition, Fisherʹs exact test, Kaplan‐Meier plots, Cox regression analyses, and receiver operating characteristic curve was performed to assess their clinical value. Downregulation of hsa_circ_0077837 and hsa_circ_0004826 all was significantly correlated with worse clinicopathological features and poor prognosis of bladder cancer patients. The area under the receiver operating characteristic curve of them was 0.775 (P < .0001) and 0.790 (P < .0001), respectively. Not surprisingly, in vitro functional experiments also demonstrated that the overexpression of hsa_circ_0077837 and hsa_circ_0004826 significantly weakened the proliferation, migration, and invasion of bladder cancer cells. Overall, hsa_circ_0077837 and hsa_circ_0004826 might act as tumor suppressors in the bladder cancer progression and serve as a potential biomarker for the diagnosis, prognosis, and therapy of bladder cancer.
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Affiliation(s)
- Chong Shen
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Zhouliang Wu
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Yujie Wang
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Shen Gao
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - La Da
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Linguo Xie
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Yunkai Qie
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Dawei Tian
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Hailong Hu
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
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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.
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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
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Shen X, Zhang X, Ru W, Huang Y, Lan X, Lei C, Chen H. circINSR Promotes Proliferation and Reduces Apoptosis of Embryonic Myoblasts by Sponging miR-34a. MOLECULAR THERAPY. NUCLEIC ACIDS 2020; 19:986-999. [PMID: 32036250 PMCID: PMC7013137 DOI: 10.1016/j.omtn.2019.12.032] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 12/06/2019] [Accepted: 12/07/2019] [Indexed: 12/12/2022]
Abstract
As a diverse and abundant class of endogenous RNAs, circular RNAs (circRNAs) participate in processes including cell proliferation and apoptosis. Nevertheless, few researchers have investigated the function of circRNAs in bovine muscle development. Based on existing sequencing data, we identified circINSR. The localization of circINSR in bovine myoblasts was investigated by fluorescence in situ hybridization. Molecular and biochemical assays were used to confirm the role of circINSR in myoblast proliferation and the cell cycle. Mitochondrial membrane potential and annexin V-PE/7-AAD staining assays were performed to assess cell apoptosis. Additionally, interactions between circINSR, miR-34a, and target mRNAs were examined using bioinformatics, a luciferase assay, and RNA immunoprecipitation. We found that circINSR was highly expressed in embryonic muscle tissue. Overexpression of circINSR significantly promoted proliferation and reduced apoptosis of embryonic myoblasts. Our data suggested that circINSR may act as a sponge of miR-34a and could function through de-repression of target genes in muscle cells. This study proposes that circINSR may function as a regulator of embryonic muscle development. circINSR regulates cells proliferation and apoptosis through miR-34a-modulated Bcl-2 and CyclinE2 expression.
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Affiliation(s)
- Xuemei Shen
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xiaoyan Zhang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Wenxiu Ru
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yongzhen Huang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xianyong Lan
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Chuzhao Lei
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Hong Chen
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China.
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38
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Zhao X, Zhong Q, Cheng X, Wang S, Wu R, Leng X, Shao L. miR-449c-5p availability is antagonized by circ-NOTCH1 for MYC-induced NOTCH1 upregulation as well as tumor metastasis and stemness in gastric cancer. J Cell Biochem 2020; 121:4052-4063. [PMID: 31943342 DOI: 10.1002/jcb.29575] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 12/09/2019] [Indexed: 02/06/2023]
Abstract
Gastric cancer (GC), identified as the most common gastrointestinal malignancy, is one of the primary causes of cancer-related mortality in the world. Although surgery and chemotherapy for GC treatment have been improved, the 5-year overall survival rate is still unsatisfactory. Circ-NOTCH1 is a novel circular RNA derived from its host gene NOTCH1, and has not been studied in any cancers. Here we explored the potential role and mediatory mechanism of circ-NOTCH1 in GC. In this study, circ-NOTCH1 exhibited increased expression in GC tissues and cells. Suppression of circ-NOTCH1 inhibited cell migration, invasion, tumor spheroids number, and side population ratio. Circ-NOTCH1 also promoted GC growth and metastasis in vivo. Additionally, it was found that circ-NOTCH1 could bind to miR-449c-5p. Circ-NOTCH1 promoted metastasis and stemness in GC through sponging miR-449c-5p. Subsequently, MYC was identified as a downstream gene of miR-449c-5p. MYC could bind to the promoter of NOTCH1 to regulate GC progression. Furthermore, rescue assays demonstrated that NOTCH1 knockdown reversed the effects of overexpression of MYC in metastasis and stemness in AGS cells/sh-circNOTCH1. Above findings explained that circ-NOTCH1 promoted metastasis and stemness in GC by targeting miR-449c-5p/MYC/NOTCH1 axis, suggesting the possibility of circ-NOTCH1 as a therapeutic marker for GC.
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Affiliation(s)
- Xiaoyong Zhao
- The Fourth General Surgery Department, Jiaozuo People's Hospital, Jiaozuo, Henan, China
| | - Qinggui Zhong
- Urological Surgery Department, Jiaozuo People's Hospital, Jiaozuo, Henan, China
| | - Xueyan Cheng
- Surgical Outpatient Clinic, Jiaozuo People's Hospital, Jiaozuo, Henan, China
| | - Shang Wang
- The Fourth General Surgery Department, Jiaozuo People's Hospital, Jiaozuo, Henan, China
| | - Ruiqing Wu
- The Fourth General Surgery Department, Jiaozuo People's Hospital, Jiaozuo, Henan, China
| | - Xinling Leng
- The Fourth General Surgery Department, Jiaozuo People's Hospital, Jiaozuo, Henan, China
| | - Lei Shao
- The Fourth General Surgery Department, Jiaozuo People's Hospital, Jiaozuo, Henan, China
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39
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Sheng R, Li X, Wang Z, Wang X. Circular RNAs and their emerging roles as diagnostic and prognostic biomarkers in ovarian cancer. Cancer Lett 2020; 473:139-147. [PMID: 31904484 DOI: 10.1016/j.canlet.2019.12.043] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/10/2019] [Accepted: 12/21/2019] [Indexed: 12/20/2022]
Abstract
Ovarian cancer (OC), one of the gynecologic malignancies with high invasive and metastatic potential, has a low survival rate in females. Although cytoreductive surgery combined with chemotherapy is the principal treatment for OC, the prognosis remains poor, and the recurrence rate of OC remains high. It is urgent to explore novel biomarkers for the diagnosis and prognosis of OC, as well as therapeutic targets. Circular RNAs (circRNAs) are a class of highly conserved, stable and abundant noncoding RNAs (ncRNAs). Recent studies have shown that circRNAs participate in OC progression by regulating various processes, including cell proliferation, migration, invasion and apoptosis. In addition, circRNAs are potential biomarkers for OC diagnosis and prognosis. This review provides an overview of recent findings on circRNAs in OC, including their functions and molecular mechanisms, and discusses their potential roles as diagnostic and prognostic biomarkers, as well as therapeutic targets for OC.
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Affiliation(s)
- Rong Sheng
- Department of Obstetrics and Gynecology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Xiaoduan Li
- Department of Gynecology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, 200092, China
| | - Ziliang Wang
- Department of Obstetrics and Gynecology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Xipeng Wang
- Department of Obstetrics and Gynecology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.
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40
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Li Y, Ren S, Xia J, Wei Y, Xi Y. EIF4A3-Induced circ-BNIP3 Aggravated Hypoxia-Induced Injury of H9c2 Cells by Targeting miR-27a-3p/BNIP3. MOLECULAR THERAPY. NUCLEIC ACIDS 2019; 19:533-545. [PMID: 31923741 PMCID: PMC6951839 DOI: 10.1016/j.omtn.2019.11.017] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 10/16/2019] [Accepted: 11/12/2019] [Indexed: 02/06/2023]
Abstract
Acute myocardial infarction (AMI) results from long-term diminished blood supply diminishment (ischemia) to the heart, and the main reason for ischemia is hypoxia. BCL2 interaction protein 3 (BNIP3) can be upregulated by hypoxia and participates in the mediation of hypoxia-activated apoptosis in cardiac myocyte death. The purpose of this study was to interrogate the mechanism of BNIP3 in hypoxia-activated cardiac myocyte injury. Cell viability and apoptosis were evaluated by Cell counting kit 8 (CCK-8), 5-ethynyl-2’-deoxyuridine (EdU), TdT-mediated dUTP Nick-End Labeling (TUNEL), and caspase-3 activity assays. Molecular interactions were assessed by RNA immunoprecipitation (RIP) and pull-down assays. Gene levels were assessed via quantitative real-time PCR and western blot. BNIP3 expression was upregulated by hypoxia in H9c2 cells. We found that circ-BNIP3 (hsa_circ_0005972), whose annotated gene was BNIP3, was induced by hypoxia and positively regulated BNIP3 expression. Knockdown of BNIP3 or circ-BNIP3 reversed the effect of hypoxia in attenuating H9c2 cell viability and inducing apoptosis. circ-BNIP3 sponged miRNA-27a-3p (miR-27a-3p) to upregulate BNIP3 expression. Moreover, eukaryotic translation initiation factor 4A3 (EIF4A3) bound with the upstream region of the circ-BNIP3 mRNA transcript and induced circ-BNIP3 expression in H9c2 cells. EIF4A3-induced circ-BNIP3 aggravated hypoxia-caused injury of H9c2 cells through targeting miR-27a-3p/BNIP3 pathway, indicating circ-BNIP3 as a new target for relieving hypoxia-induced injury of cardiac myocytes.
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Affiliation(s)
- Yansong Li
- Department of Cardiovasology, Shanghai Songjiang District Center Hospital, Shanghai 201600, China.
| | - Shuhong Ren
- Department of Cardiovasology, Xuzhou Central Hospital, Xuzhou, China
| | - Jingwen Xia
- Department of Cardiovasology, Shanghai Songjiang District Center Hospital, Shanghai 201600, China
| | - Yong Wei
- Department of Cardiovasology, Shanghai General Hospital, Shanghai, China
| | - Yinhua Xi
- Department of Cardiovasology, Shanghai Songjiang District Center Hospital, Shanghai 201600, China
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Martinez VG, Munera-Maravilla E, Bernardini A, Rubio C, Suarez-Cabrera C, Segovia C, Lodewijk I, Dueñas M, Martínez-Fernández M, Paramio JM. Epigenetics of Bladder Cancer: Where Biomarkers and Therapeutic Targets Meet. Front Genet 2019; 10:1125. [PMID: 31850055 PMCID: PMC6902278 DOI: 10.3389/fgene.2019.01125] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 10/17/2019] [Indexed: 12/12/2022] Open
Abstract
Bladder cancer (BC) is the most common neoplasia of the urothelial tract. Due to its high incidence, prevalence, recurrence and mortality, it remains an unsolved clinical and social problem. The treatment of BC is challenging and, although immunotherapies have revealed potential benefit in a percentage of patients, it remains mostly an incurable disease at its advanced state. Epigenetic alterations, including aberrant DNA methylation, altered chromatin remodeling and deregulated expression of non-coding RNAs are common events in BC and can be driver events in BC pathogenesis. Accordingly, these epigenetic alterations are now being used as potential biomarkers for these disorders and are being envisioned as potential therapeutic targets for the future management of BC. In this review, we summarize the recent findings in these emerging and exciting new aspects paving the way for future clinical treatment of this disease.
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Affiliation(s)
- Victor G. Martinez
- Biomedical Research Institute I + 12, University Hospital 12 de Octubre, Madrid, Spain
- Molecular Oncology Unit, CIEMAT (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas), Madrid, Spain
| | - Ester Munera-Maravilla
- Biomedical Research Institute I + 12, University Hospital 12 de Octubre, Madrid, Spain
- Molecular Oncology Unit, CIEMAT (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas), Madrid, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Alejandra Bernardini
- Biomedical Research Institute I + 12, University Hospital 12 de Octubre, Madrid, Spain
- Molecular Oncology Unit, CIEMAT (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas), Madrid, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Carolina Rubio
- Biomedical Research Institute I + 12, University Hospital 12 de Octubre, Madrid, Spain
- Molecular Oncology Unit, CIEMAT (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas), Madrid, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Cristian Suarez-Cabrera
- Biomedical Research Institute I + 12, University Hospital 12 de Octubre, Madrid, Spain
- Molecular Oncology Unit, CIEMAT (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas), Madrid, Spain
| | - Cristina Segovia
- Biomedical Research Institute I + 12, University Hospital 12 de Octubre, Madrid, Spain
- Molecular Oncology Unit, CIEMAT (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas), Madrid, Spain
| | - Iris Lodewijk
- Biomedical Research Institute I + 12, University Hospital 12 de Octubre, Madrid, Spain
- Molecular Oncology Unit, CIEMAT (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas), Madrid, Spain
| | - Marta Dueñas
- Biomedical Research Institute I + 12, University Hospital 12 de Octubre, Madrid, Spain
- Molecular Oncology Unit, CIEMAT (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas), Madrid, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Mónica Martínez-Fernández
- Genomes & Disease Lab, CiMUS (Center for Research in Molecular Medicine and Chronic Diseases), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Jesus Maria Paramio
- Biomedical Research Institute I + 12, University Hospital 12 de Octubre, Madrid, Spain
- Molecular Oncology Unit, CIEMAT (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas), Madrid, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
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42
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Li D, Zhang J, Li J. Role of miRNA sponges in hepatocellular carcinoma. Clin Chim Acta 2019; 500:10-19. [PMID: 31604064 DOI: 10.1016/j.cca.2019.09.013] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 09/27/2019] [Accepted: 09/27/2019] [Indexed: 12/15/2022]
Abstract
Hepatocellular carcinoma (HCC) is a leading cause of cancer-related deaths worldwide. HCC patients are commonly diagnosed at an advanced stage, for which highly effective therapies are limited. Hence, there is a growing need to discover promising biomarkers for HCC diagnosis, and in this context, microRNAs (miRNAs) hold great promise. MiRNAs function as gene expression regulators by directly binding messenger RNAs (mRNAs) and subsequently causing suppression of mRNA translation or degradation of target mRNAs. Two major types of noncoding RNAs act as competing endogenous sponges: circular RNAs and long non-coding RNAs.They can competitively bind to miRNA through miRNA response elements (MREs), thereby reducing the number of miRNAs binding mRNAs and regulating the expression of downstream target genes of miRNAs at the posttranscriptional level. The relationship between single miRNA sponge and HCC has been explored. However, comprehensive reviews on the sponge's function in HCC are lacking. In this review, we describe the methods to find endogenous sponges and construct exogenous sponges, and briefly compare endogenous and exogenous sponges. We also summarize the current progress on the functional role of miRNA sponges in HCC pathogenesis and present their potential value as diagnostic biomarkers and therapeutic targets. In-depth investigations on the function and mechanism of miRNA sponges in HCC will enrich our knowledge of HCC pathogenesis and contribute to the development of effective diagnostic biomarkers and therapeutic targets for HCC.
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Affiliation(s)
- Dandan Li
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing, People's Republic of China; Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China; Beijing Engineering Research Center of Laboratory Medicine, Beijing Hospital, Beijing, People's Republic of China
| | - Jiawei Zhang
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing, People's Republic of China; Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China; Beijing Engineering Research Center of Laboratory Medicine, Beijing Hospital, Beijing, People's Republic of China
| | - Jinming Li
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing, People's Republic of China; Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China; Beijing Engineering Research Center of Laboratory Medicine, Beijing Hospital, Beijing, People's Republic of China.
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Tan Y, Zhang T, Liang C. Circular RNA SMARCA5 is overexpressed and promotes cell proliferation, migration as well as invasion while inhibits cell apoptosis in bladder cancer. Transl Cancer Res 2019; 8:1663-1671. [PMID: 35116915 PMCID: PMC8799073 DOI: 10.21037/tcr.2019.08.08] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Accepted: 07/11/2019] [Indexed: 11/06/2022]
Abstract
Background This study aimed to investigate the function of circular RNA SMARCA5 (circ-SMARCA5) on cell proliferation, apoptosis, migration and invasion in bladder cancer. Methods Ten pairs of human bladder cancer tissue and adjacent tissue, five human bladder cancer cell lines (including TCCSUP, 5637, J82, UM-UC-3 and T-24) and normal human urothelial cell line SV-HUC-1, were obtained for the detection of circ-SMARCA5. Control overexpression and ShRNA, circ-SMARCA5 overexpression and ShRNA were constructed and transfected into UM-UC-3 cells as Control(+), Control(−), Circ-SMARCA5(+) and Circ-SMARCA5(−) groups. The role of circ-SMARCA5 was investigated in terms of cellular proliferation, apoptosis, migration, and invasion. Results Circ-SMARCA5 was overexpressed in tumor tissue compared to paired adjacent tissue and it was also overexpressed in TCCSUP, 5637, J82 and UM-UC-3 cells compared to normal human urothelial cell line SV-HUC-1. In UM-UC-3 cells, cell proliferation ability, migration rate and invasion cell count were increased in Circ-SMARCA5(+) group compared to Control(+) group, while reduced in Circ-SMARCA5(−) group compared to Control(−) group. Regarding the cell apoptosis, apoptosis rate and apoptotic protein C-Caspase 3 expression were decreased in Circ-SMARCA5(+) group than those in Control(+) group but raised in Circ-SMARCA5(−) group compared to Control(−) group, meanwhile, the anti-apoptotic protein Bcl-2 expression was elevated in Circ-SMARCA5(+) group than that in Control(+) group but reduced in Circ-SMARCA5(−) group compared to Control(−) group. Conclusions Circ-SMARCA5 is overexpressed, and promotes cell proliferation, migration and invasion, but represses apoptosis in bladder cancer.
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Affiliation(s)
- Yiao Tan
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China.,Institute of Urology, Anhui Medical University, Hefei 230022, China.,Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei 230022, China.,Department of Urology, West Branch of the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230031, China
| | - Tengyue Zhang
- Department of Oncology, West Branch of the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230031, China
| | - Chaozhao Liang
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China.,Institute of Urology, Anhui Medical University, Hefei 230022, China.,Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei 230022, China
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Down-regulation of hsa_circ_0092125 is related to the occurrence and development of oral squamous cell carcinoma. Int J Oral Maxillofac Surg 2019; 49:292-297. [PMID: 31427049 DOI: 10.1016/j.ijom.2019.07.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 06/11/2019] [Accepted: 07/25/2019] [Indexed: 01/22/2023]
Abstract
Circular RNA plays an important role in regulating tumour development and progression and can serve as a biomarker for cancer. This study was performed to investigate the clinical significance of hsa_circ_0092125 expression in oral squamous cell carcinoma (OSCC). The expression of hsa_circ_0092125 in OSCC tissues and cell lines was determined by reverse transcription-quantitative PCR analysis. The association between hsa_circ_0092125 expression and clinicopathological data was determined by χ2 test. Overall survival (OS) curves were created using Kaplan-Meier survival analysis, and the differences were examined by log-rank test. Moreover, univariate and multivariate Cox analysis were employed to evaluate the risk factors of the OSCC prognosis. The expression of hsa_circ_0092125 was significantly down-regulated in OSCC tissues and cell lines. A low expression of hsa_circ_0092125 was associated with clinicopathological factors in OSCC patients, including tumour size, TNM stage, and lymph node metastasis. Kaplan-Meier survival analysis indicated that the OS time was shorter in OSCC patients with a lower hsa_circ_0092125 expression level than in those with a higher expression level. In addition, univariate and multivariate Cox analysis identified lower hsa_circ_0092125 expression, tumour size, TNM stage, and lymph node metastasis as independent risk factors for the OSCC prognosis. Thus, down-regulated expression of hsa_circ_0092125 might serve as a biomarker of the OSCC prognosis.
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Upregulated Circular RNA circ-UBE2D2 Predicts Poor Prognosis and Promotes Breast Cancer Progression by Sponging miR-1236 and miR-1287. Transl Oncol 2019; 12:1305-1313. [PMID: 31336316 PMCID: PMC6657235 DOI: 10.1016/j.tranon.2019.05.016] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 05/18/2019] [Accepted: 05/20/2019] [Indexed: 12/28/2022] Open
Abstract
Emerging evidence suggests that circular RNAs (circRNAs) are linked to the development and progression of human cancers. Nevertheless, their contribution to breast cancer (BC) is still largely unknown. In the current study, we screened and identified a novel circRNA, circ-UBE2D2, which was highly expressed in BC cell lines and tissues and was closely related to aggressive clinical features and dismal prognosis. Small interfering RNA (siRNA)–mediated circ-UBE2D2 silencing notably inhibited the proliferation, migration and invasion of BC cells, whereas circ-UBE2D2 overexpression displayed opposite effects. Mechanistically, circ-UBE2D2 was able to simultaneously function as molecular sponges of miR-1236 and miR-1287 to regulate the expression of their respective target genes. Moreover, circ-UBE2D2–induced tumor-promoting effects could be effectively blocked by miR-1236 or miR-1287 in BC cells. More importantly, therapeutic delivery of cholesterol-conjugated si-circ-UBE2D2 oligonucleotides significantly delayed tumor growth in vivo. Overall, our findings indicate that circ-UBE2D2 plays an essential oncogenic role in BC, and targeting circ-UBE2D2 may be a feasible treatment for BC patients.
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Up-regulated circular RNA VANGL1 contributes to progression of non-small cell lung cancer through inhibition of miR-195 and activation of Bcl-2. Biosci Rep 2019; 39:BSR20182433. [PMID: 31076544 PMCID: PMC6549085 DOI: 10.1042/bsr20182433] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 03/03/2019] [Accepted: 03/05/2019] [Indexed: 12/27/2022] Open
Abstract
Circular RNAs (circRNAs), a group of non-coding RNAs, play an important role in cancer biology, and in the present study, we aimed to clarify the expression profiles and biological functions of circRNA circVANGL1 in non-small cell lung cancer (NSCLC). The results showed that circVANGL1 was overexpressed in human NSCLC tissues and cell lines. circVANGL1 expression was closely associated with tumor size, TNM stage and overall survival of NSCLC patients. Further loss-of-function analysis revealed that knockdown of circVANGL1 inhibited proliferation and induced apoptosis in NSCLC cell lines. The migration and invasion of NSCLC cells were also suppressed by circVANGL1 knockdown. In addition, we predicted that circVANGL1 might serve as a competing endogenous RNA (ceRNA), becoming a sink for miR-195, thereby modulating the expression of Bcl-2 in NSCLC cells. Rescue experiments demonstrated that miR-195 inhibitor abrogated the beneficial role of circVANGL1 knockdown in NSCLC cells. Taken together, we conclude that circVANGL1 functions as an oncogene to promote NSCLC progression partly through miR-195/Bcl-2 axis, which might be a novel therapeutic target for NSCLC patients.
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Liu N, Hu G, Wang H, Wang Y, Guo Z. LncRNA BLACAT1 regulates VASP expression via binding to miR-605-3p and promotes giloma development. J Cell Physiol 2019; 234:22144-22152. [PMID: 31093978 DOI: 10.1002/jcp.28778] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 04/17/2019] [Accepted: 04/22/2019] [Indexed: 12/14/2022]
Abstract
Glioma, an aggressive tumor in brain, presents a very poor prognosis. Emerging evidence has demonstrated that dysfunction of long noncoding RNAs (lncRNAs) is closely related to giloma development. However, the roles of lncRNA BLACAT1 in glioma are not unknown. In this study, we utilized in vitro and in vivo experiments to explore the effects of BLACAT1 on glioma cells. BLACAT1 levels were increased in glioma tissues. Upregulation of BLACAT1 showed poor prognosis. Silencing of BLACAT1 markedly repressed glioma proliferation, migration, and invasion, and suppressed glioma growth in vivo. We also illustrated that BLACAT1 worked as the sponge for miR-605-3p and promoted VASP expression. miR-605-3p was downregulated in glioma and repressed glioma proliferation, migration, and invasion. And VASP is upregulated and contributed to glioma progression. Summarily, this study highlights the important roles of BLACAT1/miR-605-3p/VASP axis in glioma progression.
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Affiliation(s)
- Naijie Liu
- Department of Neurosurgery, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Guozhang Hu
- Department of First-aid Medicine, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Han Wang
- Department of Clinical Laboratory, Changchun Chinese Medicine University Affiliated Hospital, Changchun, China
| | - Yue Wang
- Department of Pharmacology and Toxicology, Wright State University, Fairborn, Ohio
| | - Zhigang Guo
- Department of Neurosurgery, China-Japan Union Hospital of Jilin University, Changchun, China
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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.
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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)
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Zhou B, Zheng P, Li Z, Li H, Wang X, Shi Z, Han Q. CircPCNXL2 sponges miR-153 to promote the proliferation and invasion of renal cancer cells through upregulating ZEB2. Cell Cycle 2018; 17:2644-2654. [PMID: 30488762 DOI: 10.1080/15384101.2018.1553354] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Increasing evidence showed that circular RNAs (circRNAs) play critical roles in tumorigenesis. However, the roles and underlying mechanisms of circRNAs in clear cell renal cell carcinoma (ccRCC) remain unclear. In the present study, we identified a novel circRNA circPCNXL2, which was significantly upregulated in ccRCC by circular RNA microarray. Further analysis revealed that circPCNXL2 was significantly increased and correlated with poor overall survival of ccRCC patients. Function assays revealed that circPCNXL2 knockdown reduced RCC cells proliferation, invasion in vitro, and decreased tumor growth in vivo. In mechanism study, we showed that circPCNXL2 could be bind to miR-153 as a miRNA sponge to regulate ZEB2 expression in RCC progression. In addition, our data reported that the effects of circPCNXL2 inhibition on RCC cells proliferation and invasion could be abolished by miR-153 inhibitors. Altogether, we demonstrated that circPCNXL2 could regulate RCC cells proliferation and invasion by miR-153/ZEB2 axis, suggesting circPCNXL2 might serve as a potential therapeutic target for ccRCC treatment.
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Affiliation(s)
- Bisheng Zhou
- a Department of Urology Surgery , The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology , Luoyang , China
| | - Pengyi Zheng
- a Department of Urology Surgery , The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology , Luoyang , China
| | - Zhijun Li
- a Department of Urology Surgery , The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology , Luoyang , China
| | - Huibing Li
- a Department of Urology Surgery , The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology , Luoyang , China
| | - Xiaohui Wang
- a Department of Urology Surgery , The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology , Luoyang , China
| | - Zhenguo Shi
- a Department of Urology Surgery , The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology , Luoyang , China
| | - Qingjiang Han
- a Department of Urology Surgery , The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology , Luoyang , China
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Bi W, Huang J, Nie C, Liu B, He G, Han J, Pang R, Ding Z, Xu J, Zhang J. CircRNA circRNA_102171 promotes papillary thyroid cancer progression through modulating CTNNBIP1-dependent activation of β-catenin pathway. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2018; 37:275. [PMID: 30424816 PMCID: PMC6234664 DOI: 10.1186/s13046-018-0936-7] [Citation(s) in RCA: 167] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 10/18/2018] [Indexed: 12/15/2022]
Abstract
Background As a type of recently discovered noncoding RNA, circular RNAs (circRNAs) exert pivot biological functions in diverse cancers. However, the role of circRNA_102171 in papillary thyroid cancer (PTC) has not been investigated. Our study was focused on the functional investigation toward circRNA_102171 in PTC progression. And we also aimed to reveal its potential molecular mechanism. Methods The expression pattern of circRNA_102171 was determined using quantitative polymerase chain reaction (qPCR) in PTC samples and cell lines. Cell proliferation was examined utilizing CCK8, colony formation and EdU incorporation assays. Apoptosis was analyzed by Annexin V/PI staining and FACS detection. Cell migration and invasion was measured using Transwell assay. Tumor growth in vivo was determined through a xenograft assay. RNA-pulldown, RNA-IP (RIP) and RNA-EMSA were used to analyze the interaction between circRNA_102171 and CTNNBIP1. Results CircRNA_102171 expression was upregulated in tumor tissues and cell lines. CircRNA_102171 silencing suppressed PTC cell proliferation, migration and invasion while promoting apoptosis. CircRNA_102171 knockdown inhibited PTC growth in vivo. CircRNA_102171 interacted with CTNNBIP1 to block its interaction with the β-catenin/TCF3/TCF4/LEF1 complex, leading to activation of Wnt/β-catenin pathway. Conclusions CircRNA_102171 overexpression promotes PTC progression through activating Wnt/β-catenin pathway in a CTNNBIP1-dependent way.
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Affiliation(s)
- Wen Bi
- Department of Head and Neck Surgery, The Third Affiliated Hospital of Harbin Medical University, No.150 Haping Road, Nangang District, Harbin, 150081, China
| | - Jiayu Huang
- Department of Pediatrics, The First Affiliated Hospital of Harbin Medical University, Harbin, 150070, China
| | - Chunlei Nie
- Department of Head and Neck Surgery, The Third Affiliated Hospital of Harbin Medical University, No.150 Haping Road, Nangang District, Harbin, 150081, China
| | - Bo Liu
- Department of Head and Neck Surgery, The Third Affiliated Hospital of Harbin Medical University, No.150 Haping Road, Nangang District, Harbin, 150081, China
| | - Guoqing He
- Department of Head and Neck Surgery, The Third Affiliated Hospital of Harbin Medical University, No.150 Haping Road, Nangang District, Harbin, 150081, China
| | - Jihua Han
- Department of Head and Neck Surgery, The Third Affiliated Hospital of Harbin Medical University, No.150 Haping Road, Nangang District, Harbin, 150081, China
| | - Rui Pang
- Department of Head and Neck Surgery, The Third Affiliated Hospital of Harbin Medical University, No.150 Haping Road, Nangang District, Harbin, 150081, China
| | - Zhaoming Ding
- Department of Head and Neck Surgery, The Third Affiliated Hospital of Harbin Medical University, No.150 Haping Road, Nangang District, Harbin, 150081, China
| | - Jin Xu
- Department of Cell Biology, Harbin Medical University, No.157 Baojian Road, Nangang District, Harbin, 150081, China.
| | - Jiewu Zhang
- Department of Head and Neck Surgery, The Third Affiliated Hospital of Harbin Medical University, No.150 Haping Road, Nangang District, Harbin, 150081, China.
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