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Wen D, Chen J, Lin P, Pang J, Pang Y, Chen G, He Y, Yang H. Investigation of Circular RNA Expression Profiles in Ultrasound-guided Incomplete Radiofrequency Ablation Transplanted Tumor Models of Human Liver Cancer. Mol Biotechnol 2024:10.1007/s12033-024-01075-z. [PMID: 38281266 DOI: 10.1007/s12033-024-01075-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 01/12/2024] [Indexed: 01/30/2024]
Abstract
BACKGROUND Abnormally expressed circular RNAs (circRNAs) are associated with many diseases and have important biological effects on the regulation of gene expression. However, the circRNA expression profile in incomplete radiofrequency ablation (RFA)-treated liver cancer (LC) patients has not been characterized. This study investigated the potential biological effects of differentially expressed (DE) circRNAs in an incomplete RFA-treated transplantation tumor model of human LC. MATERIAL/METHODS A circRNA microarray was utilized to analyze changes in the circRNA expression profiles. CircRNA host gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses were also conducted using computational biology. Quantitative real-time PCR (qPCR) was also performed on the selected DE-circRNAs to verify the reliability of the microarray. The circRNA/miRNA interactions were predicted by Arraystar software and confirmed by a dual-luciferase assay. RESULTS Following RFA incomplete ablation, 76 DE-circRNAs were detected (|fold change |>1.5, P-value < 0.05), 21 of which were upregulated and 55 of which were downregulated. Computational biological analysis revealed that the T-cell receptor signaling pathway was the most significantly enriched pathway of the genes related to altered expression, as indicated by enrichment of LCK, AKT3 and DLG1. PCR results for the upregulated hsa_circRNA_103595 and downregulated hsa_circRNA_001264 indicated that the circRNA microarray sequencing results were reliable. Double luciferase reporter assays confirmed that hsa-miR-185-3p was the target miRNA of hsa_circRNA_103595. CONCLUSIONS The current study confirmed the changes in the expression profiles of circRNAs in tumor transplantation models after incomplete ablation, these changes may play a crucial role in the pathophysiological process of residual cancer transplantation tumors. These findings could lead to new directions for investigating the molecular biological mechanisms underlying RFA-treated LC as well as new ideas for treating LC by regulating circRNAs.
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Affiliation(s)
- Dongyue Wen
- Department of Medical Ultrasonics, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi Zhuang Autonomous Region, P. R. China
| | - Jiamin Chen
- Department of Medical Ultrasonics, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi Zhuang Autonomous Region, P. R. China
| | - Peng Lin
- Department of Medical Ultrasonics, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi Zhuang Autonomous Region, P. R. China
| | - Jinshu Pang
- Department of Medical Ultrasonics, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi Zhuang Autonomous Region, P. R. China
| | - Yuyan Pang
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Zhuang Autonomous Region, Nanning, Guangxi, P. R. China
| | - Gang Chen
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Zhuang Autonomous Region, Nanning, Guangxi, P. R. China
| | - Yun He
- Department of Medical Ultrasonics, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi Zhuang Autonomous Region, P. R. China.
| | - Hong Yang
- Department of Medical Ultrasonics, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi Zhuang Autonomous Region, P. R. China.
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2
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Schlosser S, Tümen D, Volz B, Neumeyer K, Egler N, Kunst C, Tews HC, Schmid S, Kandulski A, Müller M, Gülow K. HCC biomarkers - state of the old and outlook to future promising biomarkers and their potential in everyday clinical practice. Front Oncol 2022; 12:1016952. [PMID: 36518320 PMCID: PMC9742592 DOI: 10.3389/fonc.2022.1016952] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 11/04/2022] [Indexed: 08/27/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the most common and deadly tumors worldwide. Management of HCC depends on reliable biomarkers for screening, diagnosis, and monitoring of the disease, as well as predicting response towards therapy and safety. To date, imaging has been the established standard technique in the diagnosis and follow-up of HCC. However, imaging techniques have their limitations, especially in the early detection of HCC. Therefore, there is an urgent need for reliable, non/minimal invasive biomarkers. To date, alpha-fetoprotein (AFP) is the only serum biomarker used in clinical practice for the management of HCC. However, AFP is of relatively rather low quality in terms of specificity and sensitivity. Liquid biopsies as a source for biomarkers have become the focus of clinical research. Our review highlights alternative biomarkers derived from liquid biopsies, including circulating tumor cells, proteins, circulating nucleic acids, and exosomes, and their potential for clinical application. Using defined combinations of different biomarkers will open new perspectives for diagnosing, treating, and monitoring HCC.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Karsten Gülow
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology, and Infectious Diseases, University Hospital Regensburg, Regensburg, Germany
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3
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Foroumadi R, Rashedi S, Asgarian S, Mardani M, Keykhaei M, Farrokhpour H, Javanshir S, Sarallah R, Rezaei N. Circular RNA MYLK as a prognostic biomarker in patients with cancers: A systematic review and meta‐analysis. Cancer Rep (Hoboken) 2022; 5:e1653. [PMID: 35701309 PMCID: PMC9458501 DOI: 10.1002/cnr2.1653] [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: 12/30/2021] [Revised: 05/14/2022] [Accepted: 05/19/2022] [Indexed: 11/08/2022] Open
Abstract
Background Aims Methods Results Conclusions
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Affiliation(s)
- Roham Foroumadi
- School of Medicine Tehran University of Medical Sciences Tehran Iran
- Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA) Universal Scientific Education and Research Network (USERN) Tehran Iran
- Non‐Communicable Diseases Research Center Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences Tehran Iran
| | - Sina Rashedi
- School of Medicine Tehran University of Medical Sciences Tehran Iran
- Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA) Universal Scientific Education and Research Network (USERN) Tehran Iran
- Non‐Communicable Diseases Research Center Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences Tehran Iran
| | - Sara Asgarian
- School of Medicine Iran University of Medical Sciences Tehran Iran
| | - Mahta Mardani
- School of Medicine Tehran University of Medical Sciences Tehran Iran
- Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA) Universal Scientific Education and Research Network (USERN) Tehran Iran
| | | | - Hossein Farrokhpour
- School of Medicine Tehran University of Medical Sciences Tehran Iran
- Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA) Universal Scientific Education and Research Network (USERN) Tehran Iran
- Non‐Communicable Diseases Research Center Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences Tehran Iran
| | - Salar Javanshir
- School of Medicine Tehran Medical Sciences Branch, Islamic Azad University Tehran Iran
| | - Rojin Sarallah
- School of Medicine Tehran Medical Sciences Branch, Islamic Azad University Tehran Iran
| | - Nima Rezaei
- Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA) Universal Scientific Education and Research Network (USERN) Tehran Iran
- Research Center for Immunodeficiencies Children's Medical Center, Tehran University of Medical Sciences Tehran Iran
- Department of Immunology School of Medicine, Tehran University of Medical Sciences Tehran Iran
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4
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Shao Y, Qi C, Yan J, Lu R, Ye G, Guo J. Biological and clinical implications of hsa_circ_0086720 in gastric cancer and its clinical application. J Clin Lab Anal 2022; 36:e24369. [PMID: 35334500 PMCID: PMC9102612 DOI: 10.1002/jcla.24369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 03/01/2022] [Accepted: 03/13/2022] [Indexed: 12/13/2022] Open
Abstract
Background Circular RNAs (circRNAs) are thought to be vital participants in carcinogenesis and have the characteristics of being stable, specific, and well conserved. However, their clinical significance and application value in gastric cancer (GC) are still poorly understood. Hsa_circ_0086720 was found to be a dysregulated circRNA in GC by microarray screening and was further explored for its clinical significance and application. Methods Hsa_circ_0086720 was detected in GC cell lines, tissues, and plasma, and the clinicopathological correlations were investigated. The existence, stability, origin, and change in the plasma hsa_circ_0086720 level were verified in early GC patients. Moreover, receiver operating characteristic and Kaplan–Meier survival curves were constructed to analyze the diagnostic and prognostic values, and bioinformatics analysis was used to identify the potential functions. Finally, risk factors and nomogram predicting were established. Results Hsa_circ_0086720 was found to be downregulated in gastric carcinogenesis, and tissue hsa_circ_0086720 was negatively associated with perineural invasion, Borrmann type, disease‐free survival, and overall survival. Hsa_circ_0086720 was stable in circulating plasma and was actively secreted by cells in gastric carcinogenesis. As a biomarker for early GC screening, plasma hsa_circ_0086720 had good sensitivity and specificity, and its stability met the clinical application requirements. Bioinformatics analysis suggested that dysregulated hsa_circ_0086720 has important functions in gastric carcinogenesis. Univariate Cox regression analysis identified factors associated with overall survival time and disease‐free survival time. The nomograms showed good accuracy of predicting survival time. Conclusion Hsa_circ_0086720 is a novel biomarker for screening early GC and predicting the prognosis of advanced‐stage patients.
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Affiliation(s)
- Yongfu Shao
- Department of Gastroenterology, The Affiliated Hospital of Medical School of Ningbo University, Ningbo, China.,Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, China
| | - Changlei Qi
- Department of Gastroenterology, The Affiliated Hospital of Medical School of Ningbo University, Ningbo, China
| | - Jianing Yan
- Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, China
| | - Rongdan Lu
- Department of Gastroenterology, The Affiliated Hospital of Medical School of Ningbo University, Ningbo, China
| | - Guoliang Ye
- Department of Gastroenterology, The Affiliated Hospital of Medical School of Ningbo University, Ningbo, China
| | - Junming Guo
- Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, China
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5
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Zhang L, Wang M, Ren W, Li S, Zhi K, Gao L, Zheng J. Prognostic Significance of CircRNAs Expression in Oral Squamous Cell Carcinoma. Oral Dis 2022; 29:1439-1453. [PMID: 35286741 DOI: 10.1111/odi.14188] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 02/25/2022] [Accepted: 03/08/2022] [Indexed: 11/26/2022]
Abstract
OBJECTIVE This systematic review was aimed to comprehensively evaluate the clinicopathological and prognostic value of dysregulated expression of circRNAs in OSCC. MATERIALS AND METHODS The research was carried out by searching mainstream electronic databases including PubMed, Embase, Web of Science, Scopus, LILACS and Cochrane Library to collect relevant studies on prognostic role of circRNAs in OSCC. Pooled hazard ratios (HRs) and odds ratios(ORs) with 95% confidence intervals(CIs) were calculated to assess the association between circRNAs expression, overall survival(OS), disease/recurrence/progression survival(DFS/RFS/PFS) and clinical parameters. RESULTS This research included 1813 patients from 26 selected articles. The pooled HR values(95% CIs) in OS were 2.38(1.92-2.93) for oncogenic circRNAs and 0.43(0.28-0.66) for tumor-suppressor circRNAs respectively, in DFS/RFS/PFS were 2.34(1.73-3.17). The meta-analysis on clinicopathology features showed higher level of oncogenic circRNAs is related to advanced TNM stage and tumor stage, worse histological differentiation, lymph node and distant metastasis, while enforced expression of tumor-suppressor circRNAs is related to inferior TNM stage tumor stage and lymphatic metastasis. CONCLUSION Our meta-analysis implies that circRNAs may be candidate biomarkers for the prognosis and clinicopathology of OSCC.
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Affiliation(s)
- Linfeng Zhang
- Department of Stomatology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China.,School of Stomatology, Qingdao University, Qingdao, Shandong, China
| | - Mingfei Wang
- Department of Stomatology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China.,School of Stomatology, Qingdao University, Qingdao, Shandong, China
| | - Wenhao Ren
- Department of Oral and Maxillofacial Surgery, Key Laboratory of Oral Clinical Medicine, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Shaoming Li
- Department of Oral and Maxillofacial Surgery, Key Laboratory of Oral Clinical Medicine, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Keqian Zhi
- Department of Oral and Maxillofacial Surgery, Key Laboratory of Oral Clinical Medicine, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Ling Gao
- Department of Oral and Maxillofacial Surgery, Key Laboratory of Oral Clinical Medicine, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Jingjing Zheng
- Department of Endodontics, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
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6
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Louis C, Leclerc D, Coulouarn C. Emerging roles of circular RNAs in liver cancer. JHEP Rep 2022; 4:100413. [PMID: 35036887 PMCID: PMC8749337 DOI: 10.1016/j.jhepr.2021.100413] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 11/16/2021] [Accepted: 11/18/2021] [Indexed: 12/22/2022] Open
Abstract
Hepatocellular carcinoma and cholangiocarcinoma are the most common primary liver tumours, whose incidence and associated mortality have increased over recent decades. Liver cancer is often diagnosed late when curative treatments are no longer an option. Characterising new molecular determinants of liver carcinogenesis is crucial for the development of innovative treatments and clinically relevant biomarkers. Recently, circular RNAs (circRNAs) emerged as promising regulatory molecules involved in cancer onset and progression. Mechanistically, circRNAs are mainly known for their ability to sponge and regulate the activity of microRNAs and RNA-binding proteins, although other functions are emerging (e.g. transcriptional and post-transcriptional regulation, protein scaffolding). In liver cancer, circRNAs have been shown to regulate tumour cell proliferation, migration, invasion and cell death resistance. Their roles in regulating angiogenesis, genome instability, immune surveillance and metabolic switching are emerging. Importantly, circRNAs are detected in body fluids. Due to their circular structure, circRNAs are often more stable than mRNAs or miRNAs and could therefore serve as promising biomarkers - quantifiable with high specificity and sensitivity through minimally invasive methods. This review focuses on the role and the clinical relevance of circRNAs in liver cancer, including the development of innovative biomarkers and therapeutic strategies.
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Key Words
- ASO, antisense oligonucleotide
- CCA, cholangiocarcinoma
- CLIP, cross-linking immunoprecipitation
- EMT, epithelial-to-mesenchymal transition
- EVs, extracellular vesicles
- HCC, hepatocellular carcinoma
- HN1, haematopoietic- and neurologic-expressed sequence 1
- IRES, internal ribosome entry sites
- NGS, next-generation sequencing
- QKI, Quaking
- RBP, RNA-binding protein
- RISC, RNA-induced silencing complex
- TAM, tumour-associated macrophage
- TSB, target site blockers
- biomarker
- cancer hallmarks
- cholangiocarcinoma
- circRNA
- circRNA, circular RNA
- hepatocellular carcinoma
- miRNA, microRNA
- shRNA, small-hairpin RNA
- snRNP, small nuclear ribonuclear proteins
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Affiliation(s)
- Corentin Louis
- Inserm, Univ Rennes 1, COSS (Chemistry, Oncogenesis Stress Signaling), UMR_S 1242, Centre de Lutte contre le Cancer Eugène Marquis, F-35042, Rennes, France
| | - Delphine Leclerc
- Inserm, Univ Rennes 1, COSS (Chemistry, Oncogenesis Stress Signaling), UMR_S 1242, Centre de Lutte contre le Cancer Eugène Marquis, F-35042, Rennes, France
| | - Cédric Coulouarn
- Inserm, Univ Rennes 1, COSS (Chemistry, Oncogenesis Stress Signaling), UMR_S 1242, Centre de Lutte contre le Cancer Eugène Marquis, F-35042, Rennes, France
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7
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Nie G, Peng D, Li B, Lu J, Cai Y, Xiong X, Cheng N. Diagnostic Accuracy of Serum/Plasma Circular RNAs and the Combination of Circular RNAs and α-Fetoprotein for Detecting Hepatocellular Carcinoma: A Meta-Analysis. Front Genet 2021; 12:722208. [PMID: 34659344 PMCID: PMC8514948 DOI: 10.3389/fgene.2021.722208] [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: 06/08/2021] [Accepted: 08/19/2021] [Indexed: 02/05/2023] Open
Abstract
The lack of an accurate biomarker in hepatocellular carcinoma (HCC) has hindered early detection, diagnosis, and treatment. Circular RNAs (circRNAs), which can be used as novel biomarkers in liquid biopsies, have been brought to light as a result of the advances in research on molecular biomarkers and the progression of genomic medicine. We conducted a meta-analysis of the diagnostic accuracy of serum/plasma circRNAs or the combination of circRNAs and α-fetoprotein (AFP) in HCC. We identified eight studies that met the inclusion/exclusion criteria from PubMed, Web of Science, EMBASE, and Cochrane Library databases. The data were pooled, and the sensitivity, specificity, diagnostic odds ratio (DOR), positive likelihood ratio (+LR), and negative likelihood ratio (-LR) with 95% confidence intervals (CIs) were calculated. The areas under the summary receiver operator characteristic (SROC) curves (AUCs) were also calculated. The sensitivity of circRNAs was 0.82 (95% CI: 0.78-0.85), and the specificity was 0.82 (95% CI: 0.78-0.86). The sensitivity of AFP was 0.65 (95% CI: 0.61-0.68), and the specificity was 0.90 (95% CI: 0.85-0.93). The AUC was 0.89 (95% CI: 0.86-0.91) for circRNAs and 0.77 (95% CI: 0.74-0.81) for AFP. The sensitivity of the combination of circRNAs and AFP was 0.88 (95% CI: 0.84-0.92), specificity was 0.86 (95% CI: 0.80-0.91), and AUC was 0.94 (95% CI: 0.91-0.96). Additionally, a subgroup analysis was conducted based on the control groups used; the diagnostic accuracy was particularly high in the comparison of HCC vs. healthy controls. In summary, serum/plasma circRNAs are accurate biomarkers suitable for clinical use for detecting HCC, and the combination of circRNAs and AFP improved the diagnostic accuracy.
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Affiliation(s)
- Guilin Nie
- Department of Biliary Surgery, West China Hospital of Sichuan University, Chengdu, China.,Department of Biliary Disease Research Center, West China Hospital of Sichuan University, Chengdu, China
| | - Dingzhong Peng
- Department of Biliary Surgery, West China Hospital of Sichuan University, Chengdu, China
| | - Bei Li
- Department of Biliary Surgery, West China Hospital of Sichuan University, Chengdu, China
| | - Jiong Lu
- Department of Biliary Surgery, West China Hospital of Sichuan University, Chengdu, China
| | - Yulong Cai
- Department of Biliary Surgery, West China Hospital of Sichuan University, Chengdu, China
| | - Xianze Xiong
- Department of Biliary Surgery, West China Hospital of Sichuan University, Chengdu, China
| | - Nansheng Cheng
- Department of Biliary Surgery, West China Hospital of Sichuan University, Chengdu, China
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Circular RNA circ_0073181 contributes to tumorigenesis by regulating protein tyrosine phosphatase receptor type E via miR-548p in hepatocellular carcinoma. Anticancer Drugs 2021; 33:167-177. [PMID: 34657099 DOI: 10.1097/cad.0000000000001258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Hepatocellular carcinoma (HCC) is a major world public problem in the world, with high morbidity and mortality rates. Circular RNA (circRNA) circ_0073181 has been reported to be related to HCC development. However, the mechanism of circ_0073181 in HCC is far from being addressed. Circ_0073181, microRNA-548p (miR-548p) and protein tyrosine phosphatase receptor type E (PTPRE) level were detected by real-time quantitative PCR (RT-qPCR). Cell proliferation, migration, invasion and apoptosis were detected by Cell Counting Kit-8 (CCK-8), 5-ethynyl-2'-deoxyuridine, wound healing, transwell and flow cytometry assay. Protein levels of proliferating cell nuclear antigen, Bcl-2 related X protein (Bax) and PTPRE were examined by western blot assay. The binding relationship between miR-548p and circ_0073181 or PTPRE was predicted by circular RNA interactome and targetScan and then verified by a dual-luciferase reporter and RNA immunoprecipitation (RIP) assays. The biologic role of circ_0073181 on HCC tumor growth was examined by the xenograft tumor model in vivo. Circ_0073181 and PTPRE were upregulated, and miR-548p was decreased in HCC tissues and cells. Furthermore, circ_0073181 knockdown could boost proliferation, migration, invasion and repress apoptosis of HCC cells in vitro. The mechanical analysis suggested that circ_0073181 could regulate PTPRE expression by sponging miR-548p. In addition, circ_0073181 knockdown suppressed cell growth of HCC in vivo. Circ_0073181 silencing could inhibit HCC cell growth and metastasis partly by regulating the miR-548p/ PTPRE axis, providing a promising therapeutic target for the HCC treatment.
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9
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Sun XD, Huan C, Sun DW, Lv GY. Prognostic and Clinicopathological Significance of Circular RNA circ-ITCH Expression in Cancer Patients: A Meta-analysis. BIOMED RESEARCH INTERNATIONAL 2021; 2021:8828299. [PMID: 33623789 PMCID: PMC7875623 DOI: 10.1155/2021/8828299] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 01/12/2021] [Accepted: 01/20/2021] [Indexed: 12/16/2022]
Abstract
Circular RNAs are a class of RNAs with a covalently closed configuration, and several members of them have been reported to be capable of regulating various biological processes and predicting the outcome of disease. Among them, circular RNA circ-ITCH has been identified to be aberrantly expressed and associated with disease progression in diverse cancers. However, the correlation of circ-ITCH expression with clinicopathological features, as well as the prognosis of cancers, remains inconclusive. Therefore, a meta-analysis was performed to investigate the clinical significance of circ-ITCH in cancers by systematically summarizing all eligible literatures. Up to August 31, 2020, relevant articles were searched in PubMed, Web of Science, Cochrane library, Embase, CNKI, and Wanfang databases. Pooled hazard ratios (HRs) and odds ratios (ORs) with corresponding 95% confidence intervals (CIs) were calculated. A total of 1604 patients from 14 studies were included in this meta-analysis. The results showed that cancer patients with low circ-ITCH expression were more susceptible to develop lymph node metastasis (OR = 2.25, 95% CI: 1.67-3.02, p ≤ 0.01), larger tumor size (OR = 3.01, 95% CI: 2.01-4.52, p ≤ 0.01), advanced TNM stage (OR = 2.82, 95% CI: 1.92-4.14, p ≤ 0.01), and poor overall survival (OS) (HR = 2.45, 95% CI: 2.07-2.90, p ≤ 0.01, univariate analysis; HR = 2.69, 95% CI: 1.82-3.96, p ≤ 0.01, multivariate analysis). Thus, low circ-ITCH expression was significantly associated with aggressive clinicopathological features and unfavorable outcome in various cancers. Therefore, circ-ITCH may serve as a molecular therapy target and a prognostic marker in human cancers.
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Affiliation(s)
- Xiao-Dong Sun
- Department of Hepatobiliary and Pancreatic Surgery, The First Hospital of Jilin University, Changchun, 130021 Jilin Province, China
| | - Chen Huan
- Institute of Virology and AIDS Research, The First Hospital of Jilin University, Changchun, 130021 Jilin Province, China
| | - Da-Wei Sun
- Department of Hepatobiliary and Pancreatic Surgery, The First Hospital of Jilin University, Changchun, 130021 Jilin Province, China
| | - Guo-Yue Lv
- Department of Hepatobiliary and Pancreatic Surgery, The First Hospital of Jilin University, Changchun, 130021 Jilin Province, China
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10
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Ely A, Bloom K, Maepa MB, Arbuthnot P. Recent Update on the Role of Circular RNAs in Hepatocellular Carcinoma. J Hepatocell Carcinoma 2021; 8:1-17. [PMID: 33542907 PMCID: PMC7851377 DOI: 10.2147/jhc.s268291] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 12/17/2020] [Indexed: 12/11/2022] Open
Abstract
After being overlooked for decades, circular RNAs (circRNAs) have recently generated considerable interest. circRNAs play a role in a variety of normal and pathological biological processes, including hepatocarcinogenesis. Many circRNAs contribute to hepatocarcinogenesis through sponging of microRNAs (miRs) and disruption of cellular signaling pathways that play a part in control of cell proliferation, metastasis and apoptosis. In most cases, overexpressed circRNAs sequester miRs to cause de-repressed translation of mRNAs that encode oncogenic proteins. Conversely, low expression of circRNAs has also been described in hepatocellular carcinoma (HCC) and is associated with inhibited production of tumor suppressor proteins. Other functions of circRNAs that contribute to hepatocarcinogenesis include translation of truncated proteins and acting as adapters to regulate influence of transcription factors on target gene expression. circRNAs also affect hepatocyte transformation indirectly. For example, the molecules regulate immune surveillance of cancerous cells and influence the liver fibrosis that commonly precedes HCC. Marked over- or under-expression of circRNA expression in HCC, with correlating plasma concentrations, has diagnostic utility and assays of these RNAs are being developed as biomarkers of HCC. Although knowledge in the field has recently surged, the myriad of described effects suggests that not all may be vital to hepatocarcinogenesis. Nevertheless, investigation of the role of circRNAs is providing valuable insights that are likely to contribute to improved management of a serious and highly aggressive cancer.
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Affiliation(s)
- Abdullah Ely
- Wits/SAMRC Antiviral Gene Therapy Research Unit, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Kristie Bloom
- Wits/SAMRC Antiviral Gene Therapy Research Unit, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Mohube Betty Maepa
- Wits/SAMRC Antiviral Gene Therapy Research Unit, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Patrick Arbuthnot
- Wits/SAMRC Antiviral Gene Therapy Research Unit, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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11
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Zhu J, Li J, Wei Y, Wang J, Zhang XY. Roles of circular RNAs in the progression of hepatocellular carcinoma and their values as diagnostic and prognostic biomarkers. Gene 2020; 767:145175. [PMID: 33002570 DOI: 10.1016/j.gene.2020.145175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 08/23/2020] [Accepted: 09/23/2020] [Indexed: 02/07/2023]
Affiliation(s)
- Jing Zhu
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, The Sparkfire Scientific Research Group of Nanjing Medical University, Nanjing 210029, China
| | - Jingtao Li
- Department of Liver Diseases, The Hospital Affiliated to Shaanxi University of Chinese Medicine, Xianyang 712000, Shaanxi, China
| | - Yi Wei
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, The Sparkfire Scientific Research Group of Nanjing Medical University, Nanjing 210029, China
| | - Jianchu Wang
- Department of Hepatobiliary Surgery, Affiliated Hospital of Youjiang Medical University for Nationalities, No. 18 Zhongshan Road, Baise 533000, Guangxi Zhuang Autonomous Region, China
| | - Xiao-Yu Zhang
- Division of Gastrointestinal Surgery, Huai'an Second People's Hospital and The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an 223002, China.
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12
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Zang H, Li Y, Zhang X, Huang G. Circ_0000517 Contributes to Hepatocellular Carcinoma Progression by Upregulating TXNDC5 via Sponging miR-1296-5p. Cancer Manag Res 2020; 12:3457-3468. [PMID: 32523376 PMCID: PMC7234960 DOI: 10.2147/cmar.s244024] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Accepted: 04/17/2020] [Indexed: 12/17/2022] Open
Abstract
Background Circular RNAs (circRNAs) function as essential regulators in diverse human cancers, including hepatocellular carcinoma (HCC). However, the function of circ_0000517 in HCC was unknown. We aimed to explore the roles and mechanisms of circ_0000517 in HCC. Materials and Methods The levels of circ_0000517, RPPH1 mRNA and microRNA-1296-5p (miR-1296-5p) were measured using quantitative real-time polymerase chain reaction (qRT-PCR). The characteristics of circ_0000517 were explored by RNase R digestion and actinomycin D assays. Cell proliferation was evaluated by Cell Counting Kit-8 (CCK-8) and colony formation assays. Cell cycle process and cell apoptosis were analyzed by flow cytometry analysis. The function of circ_0000517 in vivo was explored by a murine xenograft model. The association between miR-1296-5p and circ_0000517 or thioredoxin domain containing 5 (TXNDC5) was determined by dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay. The protein level of TXNDC5 was detected by Western blot assay. Results Circ_0000517 was upregulated in HCC tissues and cells. Silencing of circ_0000517 suppressed HCC cell viability and colony formation and promoted cell cycle arrest and apoptosis in vitro and hampered tumor growth in vivo. MiR-1296-5p was a target of circ_0000517 and the effects of circ_0000517 silencing on HCC cell viability, cell cycle, colony formation and apoptosis were abolished by miR-1296-5p inhibition. TXNDC5 functioned as a target gene of miR-1296-5p, and the inhibitory effect of miR-1296-5p on HCC cell progression was rescued by TXNDC5 overexpression. Moreover, circ_0000517 promoted TXNDC5 expression via targeting miR-1296-5p. Conclusion Circ_0000517 accelerated HCC progression by upregulating TXNDC5 through sponging miR-1296-5p.
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Affiliation(s)
- Hongliang Zang
- Department of General Surgery, China-Japan Union Hospital of Jilin University, Jilin, Changchun 130012, People's Republic of China
| | - Yuhui Li
- Department of General Surgery, China-Japan Union Hospital of Jilin University, Jilin, Changchun 130012, People's Republic of China
| | - Xue Zhang
- Department of General Surgery, China-Japan Union Hospital of Jilin University, Jilin, Changchun 130012, People's Republic of China
| | - Guomin Huang
- Department of General Surgery, China-Japan Union Hospital of Jilin University, Jilin, Changchun 130012, People's Republic of China
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13
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Wang M, Gu B, Yao G, Li P, Wang K. Circular RNA Expression Profiles and the Pro-tumorigenic Function of CircRNA_10156 in Hepatitis B Virus-Related Liver Cancer. Int J Med Sci 2020; 17:1351-1365. [PMID: 32624692 PMCID: PMC7330659 DOI: 10.7150/ijms.45637] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 05/19/2020] [Indexed: 12/18/2022] Open
Abstract
Liver cancer is one of the most common malignant tumors in the world. Circular RNAs (circRNAs) perform important functions in cancer progression and are regarded as prospective biomarkers for cancer diagnosis and therapy. Here, we used the high-throughput RNA sequencing technology in conjunction with bioinformatics tools to profile circRNA expression in patients with HBV-related liver cancer. A total of 13,124 circRNAs were identified in HBV-related liver cancer, approximately 86.25% of which were sense-overlapping circRNAs. Moreover, 2,996 circRNAs exhibited different expression patterns between liver cancer tissues and matched pericancerous tissues. Function annotation indicated that these aberrantly expressed circRNAs were primarily engaged in cellular processes and cancer-associated pathways. Notably, the circRNA-miRNA interaction networks showed that 6,020 circRNAs were predicted to target 1,654 miRNAs. Quantitative RT-PCR (qRT-PCR) assay indicated that ten randomly selected circRNAs displayed consistent expression patterns with the sequencing results. We further predicted that circRNA_10156 might work as a molecular sponge of miR-149-3p, which served an important function in tumor development. Consequently, our results demonstrated that depletion of circRNA_10156 upregulated miR-149-3p, reduced Akt1 expression, and suppressed liver cancer cell proliferation. The present study will facilitate the elucidation of biological functions of circRNAs in the progression of HBV-related liver cancer providing prospective biomarkers and therapeutic targets for this disease. Our findings also reveal that circRNA_10156 might represent a promising therapeutic target for liver cancer management.
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Affiliation(s)
- Man Wang
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Bianli Gu
- Henan Key Laboratory of Cancer Epigenetics, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang 471003, China
| | - Guoliang Yao
- Department of General Surgery, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang 471003, China
| | - Peifeng Li
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Kun Wang
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
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14
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Huang X, Yang W, Zhang Z, Shao Z. Dysregulated circRNAs serve as prognostic and diagnostic markers in osteosarcoma by sponging microRNA to regulate the downstream signaling pathway. J Cell Biochem 2019; 121:1834-1841. [PMID: 31642106 DOI: 10.1002/jcb.29418] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Accepted: 10/08/2019] [Indexed: 12/16/2022]
Abstract
Circular RNAs (circRNAs) have been extensively studied in many tumors. The aim of this study was to demonstrate the relationship between circRNAs and clinical features, prognosis, and diagnosis of osteosarcoma patients. We mainly included studies about circRNAs expression and osteosarcoma. The odds ratio (ORs) and 95% confidence intervals (CIs) were used for clinical features, sensitivity, and specificity, while the hazard ratios (HRs) and 95% CIs were used to assess overall survival (OS). A number of 13 articles were included in this study, including 9 about clinical features, 11 about prognosis, and 5 about diagnosis. The results showed that increased circRNAs expression was significantly correlated with adverse clinical characteristics. In terms of prognosis, oncogenic circRNAs had adverse effects on overall survival (OS: HR = 2.54; 95%Cl: 2.05-3.03), and increased expression of cancer-suppressor circRNAs prolonged survival (OS: HR = 0.42; 95%Cl: 0.210.64). Our study further showed an AUC of 0.85, with an 80% sensitivity and 77% specificity to distinguish osteosarcoma patients from healthy controls. In conclusion, circRNAs may be new promising indicators for prognostic evaluation and early diagnosis of osteosarcoma patients.
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Affiliation(s)
- Xin Huang
- Department of Orthopaedics, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Wenbo Yang
- Department of Orthopaedics, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Zhicai Zhang
- Department of Orthopaedics, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Zengwu Shao
- Department of Orthopaedics, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
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15
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Xiao Z, Chen X, Lu X, Zhong X, Ling Y. Accuracy Evaluation of Circular RNA in Diagnosing Lung Cancer in a Chinese Population. DISEASE MARKERS 2019; 2019:7485389. [PMID: 31781305 PMCID: PMC6855014 DOI: 10.1155/2019/7485389] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 08/17/2019] [Accepted: 09/05/2019] [Indexed: 12/22/2022]
Abstract
Circular RNA (circRNA) is a class of recently discovered noncoding RNA. circRNAs can be used as a potent noninvasive biological marker of cancer owing to their varying expression levels among different cancers. This meta-analysis was performed to assess the accuracy of circRNAs in diagnosing lung cancer. A total of eight studies identified through searching the PubMed, Web of Science, Cochrane Library, and Embase from inception to March 20, 2019 were eligible for this meta-analysis. The pooled sensitivity, specificity, positive likelihood ratios, negative likelihood ratios, and diagnostic odds ratio were 0.77 (95% confidence interval (CI): 0.73-0.80; I 2 = 8.98%), 0.76 (95% CI: 0.69-0.82; I 2 = 63.12%), 3.17 (95% CI: 2.43-4.14; I 2 = 33.18%), 0.31 (95% CI: 0.26-0.37; I 2 = 20.36%), and 10.26 (95% CI: 6.87-15.31; I 2 = 97.18%), respectively. The area under the receiver operating characteristic curve was 0.78 (95% CI: 0.74-0.81). The study confirmed the use of circRNAs in diagnosing lung cancer in a Chinese population.
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Affiliation(s)
- Zhihao Xiao
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, China
| | - Xinglei Chen
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, China
| | - Xiaodan Lu
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, China
| | - Xuexin Zhong
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, China
| | - Yihui Ling
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, China
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16
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Li C, He X, Zhang L, Li L, Zhao W. A pair-wise meta-analysis highlights circular RNAs as potential biomarkers for colorectal cancer. BMC Cancer 2019; 19:957. [PMID: 31615475 PMCID: PMC6794748 DOI: 10.1186/s12885-019-6136-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 09/04/2019] [Indexed: 02/08/2023] Open
Abstract
Background Circular RNAs (circRNAs) have emerged as a special subset of endogenous RNAs that are implicated in tumorigenesis and cancer progression. Herein we aim to carry out a meta-analysis to evaluate the clinicopathologic, diagnostic and prognostic significance of circRNA expression in colorectal cancer (CRC). Methods A systematic search of online databases was performed for original articles published in English, which investigated the diagnostic accuracy, prognostic utility, and clinicopathologic association of circRNA(s) in CRC. Data were strictly extracted and study bias was judged using the Quality Assessment for Studies of Diagnostic Accuracy II (QUADAS II) and Newcastle-Ottawa Scale (NOS) checklists. Results A total of 13 studies, involving 1430 patients with CRC, were included in the meta-analysis. The clinicopathologic study showed that abnormally expressed circRNAs were correlated with tumor diameter (P = 0.0350), differentiation (P = 0.0038), lymphatic metastasis (P = 0.0119), distant metastasis (P < 0.0001), TNM stage (P = 0.0002), and depth of invasion (P = 0.001) in patients with CRC. The summary area under the curve (AUC) of circRNA for the discriminative efficacy between patients with and without CRC was estimated to be 0.79, corresponding to a weighted sensitivity of 0.77 [95% confidence interval (CI): 0.74–0.79], specificity of 0.67 (95%CI: 0.64–0.70), and diagnostic odds ratio (DOR) of 7.52 (95%CI: 4.66–12.12). Survival analysis showed that highly expressed circRNAs were correlated with significantly worse overall survival (OS) [hazard ratio (HR) = 2.66, 95%CI: 2.03–3.50, P = 0.000; X2 = 4.34, P = 0.740, I2 = 0.0%], whereas lower expression of circRNAs was associated with prolonged OS (weighted HR = 0.30, 95%CI: 0.17–0.53, P = 0.000; X2 = 1.34, P = 0.909, I2 = 0.0%). Stratified analysis in circRNA expression status, and test matrix also showed robust results. Conclusion Abnormally expressed circRNAs may be auxiliary biomarkers facilitating CRC diagnosis, and promising prognostic biomarkers in predicting the survival of CRC patients.
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Affiliation(s)
- Chen Li
- Department of Traditional Chinese Medicine, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, 471000, Henan Province, China
| | - Xinli He
- Department of Traditional Chinese Medicine, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, 471000, Henan Province, China
| | - Lele Zhang
- Department of Traditional Chinese Medicine, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, 471000, Henan Province, China
| | - Lanying Li
- Department of Traditional Chinese Medicine, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, 471000, Henan Province, China
| | - Wenzhao Zhao
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, No.24 Jinghua Road, Jianxi District, Luoyang, 471000, Henan Province, China.
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17
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Systematic Review and Meta-Analysis of the Utility of Circular RNAs as Biomarkers of Hepatocellular Carcinoma. Can J Gastroenterol Hepatol 2019; 2019:1684039. [PMID: 31187026 PMCID: PMC6521581 DOI: 10.1155/2019/1684039] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 03/31/2019] [Indexed: 12/21/2022] Open
Abstract
Emerging studies have reported circRNAs were dysregulated in HCC. However, the clinical value of these circRNAs remains to be clarified. Herein, we aimed to comprehensively explore their association with the diagnosis, prognosis, and clinicopathological characteristics of HCC. PubMed, EMBASE, Web of Science, and Cochrane Library databases were comprehensively searched for eligible studies up to October 30, 2018. The diagnostic effect was evaluated by the pooled sensitivity, specificity, and other indexes. The pooled hazard ratio (HR) for overall survival (OS) and recurrence free survival (RFS) was calculated to assess the prognostic value. Ten studies on diagnosis, 12 on prognosis, and 23 on clinicopathology were identified from the databases. A total of 11 upregulated and 11 downregulated circRNAs showed an association with clinicopathological features of HCC. For the diagnosis analyses, the pooled sensitivity, specificity, positive likelihood ratio (PLR), negative likelihood ratio (NLR), and diagnostic odds ratio (DOR) of circRNAs for HCC were 0.74 (95%CI: 0.65-0.82) and 0.76 (95%CI: 0.70-0.81), 3.1 (95%CI: 2.5-3.8), 0.34 (95%CI: 0.25-0.47), and 9 (95%CI: 6-14), respectively. The area under SROC curve (AUC) was 0.81 (95% CI: 0.78-0.84), indicating moderate diagnostic accuracy. In stratified analyses, the diagnostic performance of circRNAs varied based on the source of control and specimen type. For the prognosis analyses, increased expression of upregulated circRNAs was associated with worse OS (HR: 3.67, 95%: 2.07-6.48), while high expression of downregulated circRNAs was associated with better OS (HR: 0.38, 95%: 0.30-0.48). In conclusion, this study reveals that circRNAs may serve as promising diagnostic and prognostic biomarkers for HCC. However, further investigations are still required to explore the clinical value of circRNAs.
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Huang X, Zhang Z, Qing X, Zhang W, Zhong B, Deng X, Wang S, Cheng C, Hu H, Shao Z. Dysregulated Expression of Circular RNAs Serve as Prognostic and Clinicopathological Markers in Cancer. J Cancer 2019; 10:1825-1832. [PMID: 31205539 PMCID: PMC6547981 DOI: 10.7150/jca.29438] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 02/07/2019] [Indexed: 12/24/2022] Open
Abstract
Purpose: Circular RNAs (circRNAs) as prognostic biomarkers have spurred considerable interest in several types of tumors. In the present study, we aimed to elucidate the clinicopathological and prognostic values of circRNAs in human cancer. Methods: We systematically searched PubMed Central (PMC), PubMed, Web of Science, EMBASE, Scopus, CBM and the Cochrane Library databases up to Nov 29, 2018. Eligible studies reporting on the association between circRNAs expression and clinicopathological and prognostic outcomes in cancer were incorporated. Pooled odds ratios (ORs) and 95% confidence intervals (CIs) were used to assess clinicopathological parameters, and hazard ratios (HRs) and 95% CIs to estimate overall survival (OS). Results: Thirty-two studies involving 4529 patients were incorporated into our meta-analysis. Pooled results showed that high expression of oncogenic circRNAs was significantly associated with poor clinicopathological characteristics (tumor size: OR=1.29, 95%Cl: 1.10-1.51; TNM stage: OR=1.62, 95%Cl: 1.41-1.87; differentiation grade: OR=1.41, 95%Cl: 1.11-1.78; lymph node metastasis: OR=1.69; 95%Cl: 1.34-2.13; distant metastasis: OR=2.75; 95%Cl: 1.92-3.95) and a poor prognosis (OS: HR=2.75; 95%Cl: 2.34-3.15). Furthermore, we found that high expression of tumor-suppressor circRNAs was correlated with improved clinical characteristics (tumor size: OR=0.72; 95%Cl: 0.56-0.92; TNM stage: OR=0.77, 95%Cl: 0.68-0.88) and longer survival times (OS: HR=0.49; 95%Cl: 0.42-0.56). Subgroup analyses based on cancer types and circRNA types were also performed. Conclusion: Our study indicates that circRNAs may serve as important biomarkers for clinicopathologic features and prognosis in human cancer.
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Affiliation(s)
- Xin Huang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Zhicai Zhang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xiangcheng Qing
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Weiyue Zhang
- Department of Endocrinology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Binlong Zhong
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xiangyu Deng
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Shangyu Wang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Cheng Cheng
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Hongzhi Hu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Zengwu Shao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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Huang X, Zhang W, Shao Z. Prognostic and diagnostic significance of circRNAs expression in hepatocellular carcinoma patients: A meta-analysis. Cancer Med 2019; 8:1148-1156. [PMID: 30693679 PMCID: PMC6434206 DOI: 10.1002/cam4.1939] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 12/01/2018] [Accepted: 12/03/2018] [Indexed: 12/17/2022] Open
Abstract
Circular RNAs (circRNAs) as novel biomarkers are widely investigated in various cancers. The aim of our study was to reveal the clinicopathological, prognostic, and diagnostic features of circRNAs in human hepatocellular carcinoma (HCC). A systematical search was conducted on PubMed, Scopus, Web of Science (WOS), EMBASE, and the Cochrane Library databases. Eligible studies reporting on the association among circRNAs and clinicopathological, prognostic, diagnostic values of HCC patients were included. Pooled odds ratios (ORs) and 95% confidence intervals (CIs) were utilized to assess clinicopathological parameters, sensitivity, and specificity, and hazard ratios (HRs) were to evaluate overall survival (OS). 17 eligible studies which included 7 for clinicopathological features, 10 for prognosis, and 8 for diagnosis were in our study. As for clinicopathological parameters, high expression of oncogenic circRNAs had a significant association with poor clinicopathological features and tumor-suppressor circRNAs proved the contrary. In terms of the prognostic values, oncogenic circRNAs had a negative influence on overall survival (OS: HR = 3.39, 95%Cl: 2.59-4.19), and high expression of tumor-suppressor circRNAs was relevant to improved survival outcomes (OS: HR = 0.46, 95%Cl: 0.37-0.56). The pooled diagnostic outcomes indicated an area under the curve (AUC) of 0.84, with sensitivity of 82% and specificity of 72% in discriminating HCC from controls. Our study indicates that circRNAs may be important biomarkers for prognostic and diagnostic values of HCC.
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Affiliation(s)
- Xin Huang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Weiyue Zhang
- Department of Endocrinology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zengwu Shao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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