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Aborehab NM, Kandeil MA, Sabry D, Rabie R, Ibrahim IT. Circular SERPINA3 and its target microRNA-944 as potential biomarkers in hepatitis C virus-induced hepatocellular carcinoma in Egyptian population. Noncoding RNA Res 2023; 8:401-412. [PMID: 37305177 PMCID: PMC10247953 DOI: 10.1016/j.ncrna.2023.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/02/2023] [Accepted: 05/14/2023] [Indexed: 06/13/2023] Open
Abstract
Background The most prevalent cancer in Egypt is hepatocellular carcinoma (HCC) mainly due to the infection with the hepatitis C virus. So it is critical to find sensitive biomarkers for early diagnosis of HCC and avoid post-operation tumor recurrence. Therefore, this research was designed to demonstrate the circSERPINA3 role in the regulation of microRNA-944 gene expression in HCV-related HCC cases and compare these results with circSERPINA3 and microRNA-944 gene expression levels in HCV-infected patients. Methodology Study participants were divided into three groups: healthy controls, HCV- infected, and HCV-induced HCC patients. The gene expression levels of circSERPINA3 and microRNA-944 were evaluated using Real-Time qPCR. Then the immunoblotting procedure was applied to measure the serum levels of MDM2 and E-cadherin besides, the serum concentration levels of glypican-3 and alpha-fetoprotein were measured by sandwich ELISA. Results The gene expression level of circSERPINA3 was significantly upregulated in both HCV-infected and HCC patients causing suppression of the antitumor effect of miR-944 and showing a lower 1-year survival rate than the participants who had low circSERPINA3 gene expression levels. Subsequently, the miR-944 downstream protein, MDM2 was remarkably upregulated, exaggerating the metastasis and oxidative stress in HCC cases. Additionally, the results confirmed the downregulation of microRNA-944 improved the progression of viral hepatitis C cases to hepatocarcinogenesis through the significantly increased serum level of the metastatic marker, E-cadherin. Although alpha-fetoprotein is a common diagnostic marker used in the diagnosis of HCC, our results showed that glypican-3 had greater sensitivity and specificity and positively correlated to the IGF-1 signaling pathway of HCC cases. Moreover, the gene expression levels of circSERPINA3 and E-cadherin in both the HCV and HCV-induced HCC were significantly positively correlated. Conclusion circSERPINA3 and miR-944 were sensitive molecular markers for early diagnosis of HCC and could be prospective treatment targets for HCV-infected patients to avoid tumor recurrence in HCC cases.
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Affiliation(s)
- Nora M. Aborehab
- Department of Biochemistry, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA), Giza, 12451, Egypt
| | - Mohamed A. Kandeil
- Department of Biochemistry, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, 62521, Egypt
| | - Dina Sabry
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Badr University in Cairo, Cairo, 11829, Egypt
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Cairo University, Cairo, 11562, Egypt
| | - Radwa Rabie
- Department of Biochemistry, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA), Giza, 12451, Egypt
| | - Ibrahim T. Ibrahim
- Department of Biochemistry, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, 62521, Egypt
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Mafi A, Rismanchi H, Malek Mohammadi M, Hedayati N, Ghorbanhosseini SS, Hosseini SA, Gholinezhad Y, Mousavi Dehmordi R, Ghezelbash B, Zarepour F, Taghavi SP, Asemi Z, Alimohammadi M, Mirzaei H. A spotlight on the interplay between Wnt/β-catenin signaling and circular RNAs in hepatocellular carcinoma progression. Front Oncol 2023; 13:1224138. [PMID: 37546393 PMCID: PMC10403753 DOI: 10.3389/fonc.2023.1224138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 06/15/2023] [Indexed: 08/08/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the deadliest cancers due to multifocal development and distant metastasis resulting from late diagnosis. Consequently, new approaches to HCC diagnosis and treatment are required to reduce mortality rates. A large body of evidence suggests that non-coding RNAs (ncRNAs) are important in cancer initiation and progression. Cancer cells release many of these ncRNAs into the blood or urine, enabling their use as a diagnostic tool. Circular RNAs (CircRNAs) are as a members of the ncRNAs that regulate cancer cell expansion, migration, metastasis, and chemoresistance through different mechanisms such as the Wnt/β-catenin Signaling pathway. The Wnt/β-catenin pathway plays prominent roles in several biological processes including organogenesis, stem cell regeneration, and cell survival. Aberrant signaling of both pathways mentioned above could affect the progression and metastasis of many cancers, including HCC. Based on several studies investigated in the current review, circRNAs have an effect on HCC formation and progression by sponging miRNAs and RNA-binding proteins (RBPs) and regulating the Wnt/β-catenin signaling pathway. Therefore, circRNAs/miRNAs or RBPs/Wnt/β-catenin signaling pathway could be considered promising prognostic and therapeutic targets in HCC.
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Affiliation(s)
- Alireza Mafi
- Department of Clinical Biochemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
- Nutrition and Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hamidreza Rismanchi
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Neda Hedayati
- School of Medicine, Iran University of Medical Science, Tehran, Iran
| | - Seyedeh Sara Ghorbanhosseini
- Department of Clinical Biochemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Seyed Ali Hosseini
- Research Committee, Department of Immunology, School of Medicine, Shahid Beheshti, University of Medical Sciences, Tehran, Iran
| | - Yasaman Gholinezhad
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Rohollah Mousavi Dehmordi
- Department of Clinical Biochemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
- Department of Clinical Biochemistry, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Behrooz Ghezelbash
- Department of Immunology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Fatemeh Zarepour
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | | | - Zatollah Asemi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Mina Alimohammadi
- Student Research Committee, Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
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Wang S, Cheng L, Wu H, Li G. Mechanisms and prospects of circular RNAs and their interacting signaling pathways in colorectal cancer. Front Oncol 2022; 12:949656. [PMID: 35992800 PMCID: PMC9382640 DOI: 10.3389/fonc.2022.949656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Accepted: 07/08/2022] [Indexed: 11/13/2022] Open
Abstract
Colorectal cancer (CRC) is the leading malignant tumor in terms of morbidity and mortality worldwide, and its pathogenesis involves multiple factors, including environment, lifestyle, and genetics. Continuing evidence suggests that circular RNAs (circRNAs), as a novel non-coding RNA, constitute an important genetic variable in the pathogenesis of CRC. These circRNAs with covalently closed-loop structures exist objectively in organisms. They not only have the biological functions of regulating the expression of target genes, changing the activity of proteins, and translating proteins, but also play a key role in the proliferation, invasion, migration, and apoptosis of tumor cells. CRC is one of the most common cancers in which circRNAs are involved in tumorigenesis, metastasis, and drug resistance, and circRNAs have been demonstrated to function through crosstalk with multiple signaling pathways. Therefore, this review summarizes the biological and carcinogenic functions of circRNAs and their related PI3K/AKT, MAPK, Notch, JAK/STAT, Hippo/YAP, WNT/β-catenin, and VEGF signaling pathways in CRC. We further explore the clinical value of circRNAs and important signaling proteins in the diagnosis, prognosis, and treatment of CRC.
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Zhao H, Ming T, Tang S, Ren S, Yang H, Liu M, Tao Q, Xu H. Wnt signaling in colorectal cancer: pathogenic role and therapeutic target. Mol Cancer 2022; 21:144. [PMID: 35836256 PMCID: PMC9281132 DOI: 10.1186/s12943-022-01616-7] [Citation(s) in RCA: 188] [Impact Index Per Article: 94.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 07/01/2022] [Indexed: 02/08/2023] Open
Abstract
Background The Wnt signaling pathway is a complex network of protein interactions that functions most commonly in embryonic development and cancer, but is also involved in normal physiological processes in adults. The canonical Wnt signaling pathway regulates cell pluripotency and determines the differentiation fate of cells during development. The canonical Wnt signaling pathway (also known as the Wnt/β-catenin signaling pathway) is a recognized driver of colon cancer and one of the most representative signaling pathways. As a functional effector molecule of Wnt signaling, the modification and degradation of β-catenin are key events in the Wnt signaling pathway and the development and progression of colon cancer. Therefore, the Wnt signaling pathway plays an important role in the pathogenesis of diseases, especially the pathogenesis of colorectal cancer (CRC). Objective Inhibit the Wnt signaling pathway to explore the therapeutic targets of colorectal cancer. Methods Based on studying the Wnt pathway, master the biochemical processes related to the Wnt pathway, and analyze the relevant targets when drugs or inhibitors act on the Wnt pathway, to clarify the medication ideas of drugs or inhibitors for the treatment of diseases, especially colorectal cancer. Results Wnt signaling pathways include: Wnt/β-catenin or canonical Wnt signaling pathway, planar cell polarity (Wnt-PCP) pathway and Wnt-Ca2+ signaling pathway. The Wnt signaling pathway is closely related to cancer cell proliferation, stemness, apoptosis, autophagy, metabolism, inflammation and immunization, microenvironment, resistance, ion channel, heterogeneity, EMT/migration/invasion/metastasis. Drugs/phytochemicals and molecular preparations for the Wnt pathway of CRC treatment have now been developed. Wnt inhibitors are also commonly used clinically for the treatment of CRC. Conclusion The development of drugs/phytochemicals and molecular inhibitors targeting the Wnt pathway can effectively treat colorectal cancer clinically.
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Affiliation(s)
- Hui Zhao
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacology, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Tianqi Ming
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacology, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Shun Tang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacology, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Shan Ren
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacology, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Han Yang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacology, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Maolun Liu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacology, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Qiu Tao
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacology, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Haibo Xu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacology, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
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Novoa Díaz MB, Martín MJ, Gentili C. Tumor microenvironment involvement in colorectal cancer progression via Wnt/β-catenin pathway: Providing understanding of the complex mechanisms of chemoresistance. World J Gastroenterol 2022; 28:3027-3046. [PMID: 36051330 PMCID: PMC9331520 DOI: 10.3748/wjg.v28.i26.3027] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 04/29/2022] [Accepted: 06/20/2022] [Indexed: 02/06/2023] Open
Abstract
Colorectal cancer (CRC) continues to be one of the main causes of death from cancer because patients progress unfavorably due to resistance to current therapies. Dysregulation of the Wnt/β-catenin pathway plays a fundamental role in the genesis and progression of several types of cancer, including CRC. In many subtypes of CRC, hyperactivation of the β-catenin pathway is associated with mutations of the adenomatous polyposis coli gene. However, it can also be associated with other causes. In recent years, studies of the tumor microenvironment (TME) have demonstrated its importance in the development and progression of CRC. In this tumor nest, several cell types, structures, and biomolecules interact with neoplastic cells to pave the way for the spread of the disease. Cross-communications between tumor cells and the TME are then established primarily through paracrine factors, which trigger the activation of numerous signaling pathways. Crucial advances in the field of oncology have been made in the last decade. This Minireview aims to actualize what is known about the central role of the Wnt/β-catenin pathway in CRC chemoresistance and aggressiveness, focusing on cross-communication between CRC cells and the TME. Through this analysis, our main objective was to increase the understanding of this complex disease considering a more global context. Since many treatments for advanced CRC fail due to mechanisms involving chemoresistance, the data here exposed and analyzed are of great interest for the development of novel and effective therapies.
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Affiliation(s)
- María Belén Novoa Díaz
- Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur (UNS)-INBIOSUR (CONICET-UNS), Bahía Blanca 8000, Argentina
| | - María Julia Martín
- Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur (UNS)-INBIOSUR (CONICET-UNS), Bahía Blanca 8000, Argentina
- Departamento de Química, Universidad Nacional del Sur (UNS)-INQUISUR (CONICET-UNS), Bahía Blanca 8000, Argentina
| | - Claudia Gentili
- Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur (UNS)-INBIOSUR (CONICET-UNS), Bahía Blanca 8000, Argentina
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Abstract
CircRNAs, covalently closed noncoding RNAs, are widely expressed in a wide range of species ranging from viruses to plants to mammals. CircRNAs were enriched in the Wnt pathway. Aberrant Wnt pathway activation is involved in the development of various types of cancers. Accumulating evidence indicates that the circRNA/Wnt axis modulates the expression of cancer-associated genes and then regulates cancer progression. Wnt pathway-related circRNA expression is obviously associated with many clinical characteristics. CircRNAs could regulate cell biological functions by interacting with the Wnt pathway. Moreover, Wnt pathway-related circRNAs are promising potential biomarkers for cancer diagnosis, prognosis evaluation, and treatment. In our review, we summarized the recent research progress on the role and clinical application of Wnt pathway-related circRNAs in tumorigenesis and progression.
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Affiliation(s)
- Chen Xue
- grid.13402.340000 0004 1759 700XState Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, National Clinical Research Center for Infectious Diseases, Zhejiang University, No. 79 Qingchun Road, Shangcheng District, 310003 Hangzhou, China
| | - Ganglei Li
- grid.13402.340000 0004 1759 700XDepartment of Neurosurgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, 310003 Hangzhou, China
| | - Qiuxian Zheng
- grid.13402.340000 0004 1759 700XState Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, National Clinical Research Center for Infectious Diseases, Zhejiang University, No. 79 Qingchun Road, Shangcheng District, 310003 Hangzhou, China
| | - Xinyu Gu
- grid.13402.340000 0004 1759 700XState Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, National Clinical Research Center for Infectious Diseases, Zhejiang University, No. 79 Qingchun Road, Shangcheng District, 310003 Hangzhou, China
| | - Zhengyi Bao
- grid.13402.340000 0004 1759 700XState Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, National Clinical Research Center for Infectious Diseases, Zhejiang University, No. 79 Qingchun Road, Shangcheng District, 310003 Hangzhou, China
| | - Juan Lu
- grid.13402.340000 0004 1759 700XState Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, National Clinical Research Center for Infectious Diseases, Zhejiang University, No. 79 Qingchun Road, Shangcheng District, 310003 Hangzhou, China
| | - Lanjuan Li
- grid.13402.340000 0004 1759 700XState Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, National Clinical Research Center for Infectious Diseases, Zhejiang University, No. 79 Qingchun Road, Shangcheng District, 310003 Hangzhou, China
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Long C, Xu QB, Ding L, Huang LJ, Ji Y. Circular RNAs as Diagnostic and Prognostic Indicators of Colorectal Cancer: A Pooled Analysis of Individual Studies. Pathol Oncol Res 2022; 28:1610037. [PMID: 35369570 PMCID: PMC8967936 DOI: 10.3389/pore.2022.1610037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 02/08/2022] [Indexed: 11/17/2022]
Abstract
Background: Circular RNAs (circRNAs) have proven as a special subset of endogenous RNAs that are implicated in the tumorigenesis of various cancers. This study sought to evaluate the role of circRNAs in the diagnosis and prognosis of colorectal cancer (CRC). Methods: The online databases were searched for collecting relevant studies on circRNAs as diagnostic and prognostic biomarkers of CRC. Two researchers independently screened literature, extracted data, and evaluated the bias and risks of included studies. The diagnostic and prognostic indicators were merged and analyzed using STATA 12.0 software, and sources of heterogeneity were traced by the sensitivity analysis and the meta-regression test. Results: A total of 29 articles representing 2639 CRC patients were included. The pooled sensitivity, specificity, and area under the curve (AUC) of circRNAs in differentiating CRC from non-tumor control were 0.75 (95% CI: 0.69–0.80) and 0.74 (95% CI: 0.69–0.78) and 0.81, respectively. The survival analysis showed that up-regulations of up-regulated circRNAs were significantly related to dismal survival in CRC patients (HR = 2.38, p < 0.001). A stratified analysis showed that the comprehensive diagnostic value of up-regualted circRNAs in CRC was higher than that of down-regualted circRNAs (AUC: 0.83 vs. 0.77; Z test, p < 0.05). The efficacy of tissue-derived circRNAs in the diagnosis of CRC was equal to that of plasma/serum-derived ones (AUC: 0.81 vs. 0.82; Z test, p > 0.05). Conclusion: Abnormally expressed circRNAs as auxiliary biomarkers present underlying value in the diagnosis and prognosis prediction of CRC.
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Affiliation(s)
- Cong Long
- Department of Clinical Laboratory, Jingjiang People's Hospital, Taizhou, China
| | - Qiu-Bo Xu
- Department of Clinical Laboratory, Jingjiang People's Hospital, Taizhou, China
| | - Li Ding
- Department of Clinical Laboratory, Jingjiang People's Hospital, Taizhou, China
| | - Li-Juan Huang
- Department of Clinical Laboratory, Jingjiang People's Hospital, Taizhou, China
| | - Yong Ji
- Department of General Surgery, Jingjiang People's Hospital, Taizhou, China
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Abstract
Colorectal cancer (CRC) is one of the most common carcinomas. Although great progress has been made in recent years, CRC survival remains unsatisfactory due to high metastasis and recurrence. Understanding the underlying molecular mechanisms of CRC tumorigenesis and metastasis has become increasingly important. Recently, aberrant Wnt/β‑catenin signaling has been reported to be strongly associated with CRC tumorigenesis, metastasis and recurrence. Therefore, the Wnt/β‑catenin signaling pathway has potential value as a therapeutic target for CRC. In the present review, the dysregulation of this pathway in CRC and the promoting or suppressing function of therapeutic targets on CRC were explored. In addition, the interaction between this pathway and epithelial‑mesenchymal transition (EMT), cell stemness, mutations, metastasis‑related genes and tumor angiogenesis in CRC cells were also investigated. Numerous studies on this pathway may help identify the potential diagnostic and prognostic markers and therapeutic targets for CRC.
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Affiliation(s)
- Yong Ji
- Department of General Surgery, Jingjiang People's Hospital, Jingjiang, Jiangsu 214500, P.R. China
| | - Jian Lv
- Department of General Surgery, Jingjiang People's Hospital, Jingjiang, Jiangsu 214500, P.R. China
| | - Di Sun
- Department of General Surgery, Jingjiang People's Hospital, Jingjiang, Jiangsu 214500, P.R. China
| | - Yufeng Huang
- Department of Oncology, Jingjiang People's Hospital, Jingjiang, Jiangsu 214500, P.R. China
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Li D, Zhang J, Yang J, Wang J, Zhang R, Li J, Zhang R. CircMTO1 suppresses hepatocellular carcinoma progression via the miR-541-5p/ZIC1 axis by regulating Wnt/β-catenin signaling pathway and epithelial-to-mesenchymal transition. Cell Death Dis 2021; 13:12. [PMID: 34930906 DOI: 10.1038/s41419-021-04464-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 11/25/2021] [Accepted: 12/07/2021] [Indexed: 12/11/2022]
Abstract
CircRNA mitochondrial tRNA translation optimization 1 (circMTO1) functions as a tumor suppressor usually and is related to the progression of many tumors, including hepatocellular carcinoma (HCC). CircMTO1 is downregulated in HCC as compared to adjacent nontumor tissue, which may suppress the HCC progression by certain signal pathways. However, the underlying signal pathway remains largely unknown. The interactions between circMTO1 and miR-541-5p were predicted through bioinformatics analysis and verified using pull-down and dual-luciferase reporter assays. CCK-8, transwell, and apoptosis assays were performed to determine the effect of miR-541-5p on HCC progression. Using bioinformatic analysis, dual-luciferase reporter assay, RT-qPCR, and western blot, ZIC1 was found to be the downstream target gene of miR-541-5p. The regulatory mechanisms of circMTO1, miR-541-5p, and ZIC1 were investigated using in vitro and in vivo rescue experiments. The results depicted that silencing circMTO1 or upregulating miR-541-5p expression facilitated HCC cell proliferation, migration, and invasion and inhibited apoptosis. CircMTO1 silencing upregulated the expression of downstream ZIC1 regulators of the Wnt/β-catenin pathway markers, β-catenin, cyclin D1, c-myc, and the mesenchymal markers N-cadherin, Vimentin, and MMP2, while the epithelial marker E-cadherin was downregulated. MiR-541-5p knockdown had the opposite effect and reversed the effect of circMTO1 silencing on the regulation of downstream ZIC1 regulators. Intratumoral injection of miR-541-5p inhibitor suppressed tumor growth and reversed the effect of circMTO1 silencing on the promotion of tumor growth in HCC. These findings indicated that circMTO1 suppressed HCC progression via the circMTO1/ miR-541-5p/ZIC1 axis by regulating Wnt/β-catenin signaling and epithelial-to-mesenchymal transition, making it a novel therapeutic target. ![]()
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Shi Z, Wen Y, Zhang S, Cheng X. Circular RNA MTO1 intercorrelates with microRNA-630, both associate with Enneking stage and/or pathological fracture as well as prognosis in osteosarcoma patients. J Clin Lab Anal 2021; 35:e23987. [PMID: 34545623 PMCID: PMC8605125 DOI: 10.1002/jcla.23987] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/17/2021] [Accepted: 08/20/2021] [Indexed: 12/25/2022] Open
Abstract
Objective Circular RNA‐mitochondrial tRNA translation optimization 1 (circ‐MTO1) not only involves in bioprocess of various cancers, but also regulates osteosarcoma progression by regulating microRNA‐630 (miR‐630). However, the clinical role of circ‐MTO1 and miR‐630 in osteosarcoma is still obscure. This study aimed to assess the correlation of circ‐MTO1 and miR‐630 with disease features and prognosis and to explore their association with each other in osteosarcoma patients. Methods Forty‐four osteosarcoma patients who received neoadjuvant chemotherapy to surgical resection were analyzed in this retrospective study. Then, circ‐MTO1 and miR‐630 expressions were evaluated in tumor and adjacent non‐tumor specimens by reverse transcription quantitative polymerase chain reaction. Results Circ‐MTO1 was lower in tumor than in non‐tumor tissues (p<0.001); meanwhile, its elevated tumor expression was correlated with less advanced Enneking stage (p=0.049), good neoadjuvant chemotherapy response (p=0.029), and longer disease‐free survival (DFS) (p=0.047). However, no association was found between circ‐MTO1 and overall survival (OS) (p=0.122). Additionally, miR‐630 in tumor was higher than in non‐tumor tissues (p<0.001), while its raised tumor expression was associated with pathological fracture occurrence (p=0.003), advanced Enneking stage (p=0.036), poor neoadjuvant chemotherapy response (p=0.035), and shorter DFS (p=0.011). However, no association was found between miR‐630 and OS (p=0.066). In addition, tumor circ‐MTO1 was negatively associated with miR‐630 (r=−0.323, p=0.032). Conclusion Circ‐MTO1 and miR‐630 expressions are inter‐correlated and dysregulated in osteosarcoma patients. Besides, they associate with Enneking stage and/or pathological fracture, as well as neoadjuvant treatment response and accumulating DFS in these patients.
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Affiliation(s)
- Zhihua Shi
- Hand and Foot Surgery, Xianning Central Hospital, The First Affiliated Hospital of Hubei University of Science and Technology, Xianning, China
| | - Ye Wen
- Emergency Department, Xianning Central Hospital, The First Affiliated Hospital of Hubei University of Science and Technology, Xianning, China
| | - Senbing Zhang
- Department of Anesthesiology, Xianning Central Hospital, The First Affiliated Hospital of Hubei University of Science and Technology, Xianning, China
| | - Xin Cheng
- Department of Gynaecology, Xianning Central Hospital, The First Affiliated Hospital of Hubei University of Science and Technology, Xianning, China
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Ameli-Mojarad M, Ameli-Mojarad M, Hadizadeh M, Young C, Babini H, Nazemalhosseini-Mojarad E, Bonab MA. The effective function of circular RNA in colorectal cancer. Cancer Cell Int 2021; 21:496. [PMID: 34535136 PMCID: PMC8447721 DOI: 10.1186/s12935-021-02196-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 09/03/2021] [Indexed: 01/04/2023] Open
Abstract
Colorectal cancer (CRC) is the 3rd most common type of cancer worldwide. Late detection plays role in one-third of annual mortality due to CRC. Therefore, it is essential to find a precise and optimal diagnostic and prognostic biomarker for the identification and treatment of colorectal tumorigenesis. Covalently closed, circular RNAs (circRNAs) are a class of non-coding RNAs, which can have the same function as microRNA (miRNA) sponges, as regulators of splicing and transcription, and as interactors with RNA-binding proteins (RBPs). Therefore, circRNAs have been investigated as specific targets for diagnostic and prognostic detection of CRC. These non-coding RNAs are also linked to metastasis, proliferation, differentiation, migration, angiogenesis, apoptosis, and drug resistance, illustrating the importance of understanding their involvement in the molecular mechanisms of development and progression of CRC. In this review, we present a detailed summary of recent findings relating to the dysregulation of circRNAs and their potential role in CRC.
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Affiliation(s)
| | - Melika Ameli-Mojarad
- Department of Biology, Faculty of Basic Science, Kharrazi University, Tehran, Iran
| | - Mahrooyeh Hadizadeh
- School of Medicine, University of Sunderland, City Campus, Chester Road, Sunderland, SR1 3SD UK
| | - Chris Young
- Institute of Health & Life Sciences, De Montfort University, Leicester, UK
| | - Hosna Babini
- Department of Cell & Molecular Biology, Faculty of Science, Tehran University of Medical Science, Tehran, Iran
| | - Ehsan Nazemalhosseini-Mojarad
- Gastroenterology and Liver Disease Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maziar Ashrafian Bonab
- School of Medicine, University of Sunderland, City Campus, Chester Road, Sunderland, SR1 3SD UK
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12
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Duan J, Cai H, Huang Y, Shi L. SNAI2-Induced CircMTO1 Promotes Cell Proliferation and Inhibits Apoptosis Through the miR-320b/MCL1 Axis in Human Granulosa-Like Tumor Cells. Front Genet 2021; 12:689916. [PMID: 34413875 PMCID: PMC8369758 DOI: 10.3389/fgene.2021.689916] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 07/12/2021] [Indexed: 11/29/2022] Open
Abstract
Polycystic ovary syndrome (PCOS), one of the most common types of endocrine diseases, is characterized by a high prevalence among women of reproductive-age. However, its pathogenesis and molecular mechanisms remain unclear. CircMTO1 has been reported to participate in numerous biological processes, but, its role in PCOS progression remains unknown. In the current study, we elucidated the expression and circRNA characterization of circMTO1 in human granulosa-like tumor cells. We found that circMTO1 knockdown promoted human granulosa-like tumor cell proliferation and inhibited its apoptosis rate. Next, we explored the underlying molecular mechanisms by using a series of experiments. Our results revealed the effect of the novel circMTO1/miR-320b/MCL1 axis in human granulosa-like tumor cells. Furthermore, we found that the expression of circMTO1 was induced by Snail family transcriptional repressor 2 (SNAI2) in human granulosa-like tumor cells. Our results may provide potential targets for PCOS research and a novel direction for the diagnosis and treatment of PCOS.
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Affiliation(s)
- Jie Duan
- Department of Gynecology, Maternal and Child Health Hospital of Hubei Province, Wuhan, China.,Department of Gynecology, Women and Children's Hospital of Hubei Province, Wuhan, China
| | - Hongning Cai
- Department of Gynecology II, Maternal and Child Health Hospital of Hubei Province, Wuhan, China.,Department of Gynecology II, Women and Children's Hospital of Hubei Province, Wuhan, China
| | - Yanming Huang
- Department of Gynecology, Maternal and Child Health Hospital of Hubei Province, Wuhan, China.,Department of Gynecology, Women and Children's Hospital of Hubei Province, Wuhan, China
| | - Liangyan Shi
- Department of Gynecology, Maternal and Child Health Hospital of Hubei Province, Wuhan, China.,Department of Gynecology, Women and Children's Hospital of Hubei Province, Wuhan, China
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13
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Yang K, Zhang J, Bao C. Exosomal circEIF3K from cancer-associated fibroblast promotes colorectal cancer (CRC) progression via miR-214/PD-L1 axis. BMC Cancer 2021; 21:933. [PMID: 34412616 PMCID: PMC8375187 DOI: 10.1186/s12885-021-08669-9] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 08/05/2021] [Indexed: 12/20/2022] Open
Abstract
Background Tumor microenvironment (e.g., cancer-associated fibroblast) plays a key role in cancer tumorigenesis and metastasis. However, the detailed mechanism of whether hypoxia promotes CRC progression via tumor microenvironment remains unclear. Methods In this study, circEIF3K exosome was examined by NanoSight Tracking Analysis and RT-qPCR. We used cell colony formation assay, transwell assay and tube formation assay to determine proliferation, invasion and metastasis of HCT116 or SW620 cells. Xenograft tumor assay was employed to show in vivo tumor growth of HCT116 cells. Results We found that hypoxia could induce secretion of circEIF3K exosome. Conditioned medium (CM) and exosome from circEIF3K knockdown CAF significantly attenuated proliferation, invasion and tube formation of HCT116 or SW620 cells, which could be reverted by miR-214 under hypoxia treatment. Besides, we observed that circEIF3K knockdown evidently impaired tumor growth in mice. TCGA dataset analysis showed that low expression of circEIF3K was observed in normal tissues and associated with prolonged survival time. Finally, PD-L1 was confirmed as important target for miR-214 in CRC. Conclusion In conclusion, our study reveals that a novel axis circEIF3K/miR-214/PD-L1 mediates hypoxia-induced CRC progression via CAF, providing the rationale for developing new targeted therapeutics to treat CRC.
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Affiliation(s)
- Kaihua Yang
- Department of Radiotherapy, Affiliated Hospital of Jiangnan University, Wuxi, China.
| | - Jie Zhang
- Medical School, Nantong University, Nantong, China
| | - Chuanqing Bao
- Department of Gastrointestinal Surgery, Affiliated Hospital of Jiangnan University, No. 1000 Hefeng Road, Wuxi, 214122, China.
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14
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Abstract
Colorectal cancer (CRC) is one of the most common types of malignant cancer worldwide and poses a significant burden on both the individual and healthcare systems. Despite advances in treatment options, advanced-stage CRC has a high mortality rate due to its heterogeneity, metastatic potential and/or delay in diagnosis. In recent years, an increasing number of studies have indicated that circular RNAs (circRNAs) serve important roles in several types of cancer, including CRC. Recent studies have revealed that circRNAs are aberrantly expressed in CRC tissues and function as oncogenic or tumor suppressive regulators of CRC carcinogenesis and development. Numerous circRNAs have been associated with the clinicopathological features of patients with CRC and have been considered as potential biomarkers for the diagnosis and prognosis of CRC, as well as targets for treatment. However, a deeper understanding of their potential function is required. In the present review, the current body of knowledge on the biogenesis and functions of CRC-associated circRNAs, and their potential value in clinical applications, such as in CRC diagnosis, prognosis and treatment, is discussed and summarized.
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Affiliation(s)
- Mingying Zhang
- Department of Oncology, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, P.R. China
- Shenzhen Key Laboratory of Gastrointestinal Cancer Translational Research, Cancer Institute of Shenzhen-PKU-HKUST Medical Center, Shenzhen, Guangdong 518036, P.R. China
- Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - Shubin Wang
- Department of Oncology, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, P.R. China
- Shenzhen Key Laboratory of Gastrointestinal Cancer Translational Research, Cancer Institute of Shenzhen-PKU-HKUST Medical Center, Shenzhen, Guangdong 518036, P.R. China
- Correspondence to: Professor Shubin Wang, Department of Oncology, Peking University Shenzhen Hospital, 1120 Lianhua Road, Futian, Shenzhen, Guangdong 518036, P.R. China, E-mail:
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15
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Luo M, Peng T, Lin R, Gu L, He Y. Hsa_circ_0031787 promotes cell proliferation and invasion in colorectal cancer. J Clin Lab Anal 2021; 35:e23807. [PMID: 34089272 PMCID: PMC8274988 DOI: 10.1002/jcla.23807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 04/06/2021] [Accepted: 04/07/2021] [Indexed: 12/09/2022] Open
Abstract
OBJECTIVE Circular RNA (circRNA) has been found to be involved in regulating tumor development. However, the roles and underlying mechanisms of circRNA in colorectal cancer (CRC) development remain unclear. In this study, we investigated the effects of hsa_circ_0031787 on CRC.a METHODS: Aberrant circRNA expression was explored by the Gene Expression Omnibus (GEO) database, and hsa_circ_0031787 was selected for further study. Hsa_circ_0031787 expression was determined in CRC tissues and cell lines by qRT-PCR. Cell proliferation was measured by Edu and colony formation assays. Cell invasion was tested by Transwell assays. RESULTS Hsa_circ_0031787 expression levels in CRC were significantly increased and correlated with advanced TNM stage and lymph node metastasis in CRC patients. Functional assays showed that hsa_circ_0031787 suppression reduced CRC cell proliferation and invasion in vitro and reduced tumor growth in vivo. Furthermore, hsa_circ_0031787 suppression reduced activation of the Wnt/β-catenin axis in CRC. CONCLUSIONS Our results showed that hsa_circ_0031787 may function as an oncogenic circRNA in CRC progression, thus providing a new potential therapeutic target.
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Affiliation(s)
- Min Luo
- Hunan University of Chinese MedicineChangshaChina
- Department of ProctologyThe Second Affiliated Hospital of Hunan University of Chinese MedicineChangshaChina
| | - Tianshu Peng
- Department of ProctologyThe Second Affiliated Hospital of Hunan University of Chinese MedicineChangshaChina
| | - Renjing Lin
- Department of ProctologyThe Second Affiliated Hospital of Hunan University of Chinese MedicineChangshaChina
| | - Liyao Gu
- Hunan University of Chinese MedicineChangshaChina
| | - Yongheng He
- Department of ProctologyAffiliated Hospital of Hunan Academy of Traditional Chinese MedicineChangshaChina
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16
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Abstract
Circular RNAs (circRNAs) are a recently discovered type of covalently-closed circular non-coding RNAs, mainly formed by non-sequential back-splicing of precursor mRNAs (pre-mRNAs). Recent studies have demonstrated that circRNAs can have either oncogenic or tumor-suppressor roles depending on the cellular context. CircRNA mitochondrial tRNA translation optimization 1 (circMTO1), a recently reported circular RNA originating from exons of MTO1 located on chromosome 6q13, was proved to be abnormally expressed in many malignant tumors, such as hepatocellular carcinoma, gastric carcinoma and colorectal cancer, resulting in tumor initiation and progression. However, there are no reviews focusing on the roles of circMTO1 in cancer. Here, we first summarize the main biological characteristics of circMTO1, and then focus on its biological functions and the possible underlying molecular mechanisms. Finally, we summarize the roles of circMTO1 in cancer and discuss future prospects in this area of research.
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Affiliation(s)
- Wei Liu
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yuanyuan Xiong
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Renhua Wan
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Renfeng Shan
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jianfeng Li
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Wu Wen
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
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17
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Wang P, Zhou C, Li D, Zhang D, Wei L, Deng Y. circMTO1 sponges microRNA-219a-5p to enhance gallbladder cancer progression via the TGF-β/Smad and EGFR pathways. Oncol Lett 2021; 22:563. [PMID: 34113391 PMCID: PMC8185704 DOI: 10.3892/ol.2021.12824] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 04/28/2021] [Indexed: 01/17/2023] Open
Abstract
Circular mitochondrial translation optimization 1 homologue (circMTO1) has been reported to regulate the tumorigenesis of different types of cancer; however, the role of circMTO1 in gallbladder cancer (GBC) remains unknown. The present study aimed to identify the potential miRNAs and target genes of circMTO1 during GBC progression, and clarify the regulatory mechanism between circMTO1 and miRNAs or target genes. The present study performed MTT and Transwell assays, and Annexin V staining to assess cell viability, migration and apoptosis, respectively. In addition, a lymphatic vessel formation assay was performed to assess tube formation of human dermal lymphatic endothelial cells (HDLECs), and GBC-SD and NOZ cells. The results demonstrated that circMTO1 knockdown significantly attenuated the viability and migration of GBC cells and tube formation of HDLECs, and promoted apoptosis, indicating a tumor-promoting role of circMTO1. In addition, transfection with microRNA (miRNA/miR)-219a-5p inhibitor rescued short hairpin RNA-circMTO1-inhibited tumorigenesis of GBC cells, suggesting that miR-219a-5p acts as a downstream effector for circMTO1. Mechanistically, transfection with miR-219a-5p mimic suppressed the expression levels of Smad2/4 and epidermal growth factor receptor. Analysis of The Cancer Genome Atlas datasets revealed that circMTO1 expression was associated with overall survival and the stage of patients with GBC. Taken together, the results of the present study provide novel insight for the role of circMTO1-induced GBC tumorigenesis via regulation of miR-219a-5p expression.
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Affiliation(s)
- Pingfan Wang
- Department of Pathology, Lanzhou No. 2 People's Hospital, Lanzhou, Gansu 730046, P.R. China
| | - Chenggang Zhou
- Department of Hepatobiliary and Pancreatic Surgery, Lanzhou No. 2 People's Hospital, Lanzhou, Gansu 730046, P.R. China
| | - Donghai Li
- Department of Pathology, Lanzhou No. 1 People's Hospital, Lanzhou, Gansu 730050, P.R. China
| | - Dongsheng Zhang
- Department of Pathology, Lanzhou No. 2 People's Hospital, Lanzhou, Gansu 730046, P.R. China
| | - Long Wei
- Department of Pathology, Lanzhou No. 2 People's Hospital, Lanzhou, Gansu 730046, P.R. China
| | - Ying Deng
- Department of Hepatobiliary Surgery, Lanzhou No. 2 People's Hospital, Lanzhou, Gansu 730046, P.R. China
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18
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Abstract
Circular RNAs (circRNAs) are a large class of noncoding RNAs that are emerging as critical regulators of various cellular processes that are involved in the physiopathological mechanism of many human diseases, such as cardiovascular disease, atherosclerosis, diabetes mellitus, and carcinogenesis. Autophagy is a conserved and catabolic cellular process that degrades unfolded, misfolded, or damaged protein aggregates or organelles to maintain cellular homeostasis under physiological and pathological conditions. Increasing evidence has shown a link between circRNAs and autophagy that is closely related to the occurrence and development of human diseases, including cancer. In this review, we highlight recent advances in understanding the functions and mechanisms of circRNAs in the regulation of autophagy in cancer. These autophagy-related circRNAs contribute to cancer development and progression in various types of human cancer by activating or inhibiting autophagy. Cumulative research on the relationship between circRNAs and autophagy regulation provides critical insight into the essential role that circRNAs play in carcinogenesis and suggests new targets for tumor therapy.
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Affiliation(s)
- Zhixia Zhou
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, People's Republic of China
| | - Yinfeng Zhang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, People's Republic of China
| | - Jinning Gao
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, People's Republic of China
| | - Xiaodan Hao
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, People's Republic of China
| | - Chan Shan
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, People's Republic of China
| | - Jing Li
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, People's Republic of China
| | - Cuiyun Liu
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, People's Republic of China
| | - Yin Wang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, People's Republic of China
| | - Peifeng Li
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, People's Republic of China
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19
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Long F, Lin Z, Li L, Ma M, Lu Z, Jing L, Li X, Lin C. Comprehensive landscape and future perspectives of circular RNAs in colorectal cancer. Mol Cancer 2021; 20:26. [PMID: 33536039 PMCID: PMC7856739 DOI: 10.1186/s12943-021-01318-6] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 01/19/2021] [Indexed: 12/14/2022] Open
Abstract
Colorectal cancer (CRC) is a common hereditary tumor that is often fatal. Its pathogenesis involves multiple genes, including circular RNAs (circRNAs). Notably, circRNAs constitute a new class of noncoding RNAs (ncRNAs) with a covalently closed loop structure and have been characterized as stable, conserved molecules that are abundantly expressed in tissue/development-specific patterns in eukaryotes. Based on accumulating evidence, circRNAs are aberrantly expressed in CRC tissues, cells, exosomes, and blood from patients with CRC. Moreover, numerous circRNAs have been identified as either oncogenes or tumor suppressors that mediate tumorigenesis, metastasis and chemoradiation resistance in CRC. Although the regulatory mechanisms of circRNA biogenesis and functions remain fairly elusive, interesting results have been obtained in studies investigating CRC. In particular, the expression of circRNAs in CRC is comprehensively modulated by multiple factors, such as splicing factors, transcription factors, specific enzymes and cis-acting elements. More importantly, circRNAs exert pivotal effects on CRC through various mechanisms, including acting as miRNA sponges or decoys, interacting with RNA binding proteins, and even translating functional peptides. Finally, circRNAs may serve as promising diagnostic and prognostic biomarkers and potential therapeutic targets in the clinical practice of CRC. In this review, we discuss the dysregulation, functions and clinical significance of circRNAs in CRC and further discuss the molecular mechanisms by which circRNAs exert their functions and how their expression is regulated. Based on this review, we hope to reveal the functions of circRNAs in the initiation and progression of cancer and highlight the future perspectives on strategies targeting circRNAs in cancer research.
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Affiliation(s)
- Fei Long
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, P.R. China
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of The University of South China, Hengyang, Hunan, 421001, P.R. China
| | - Zhi Lin
- Department of Pediatrics, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P.R. China
| | - Liang Li
- Class 25 Grade 2016, The Five-Year Program in Clinical Medicine, School of Medicine, University of South China, Hengyang, Hunan, 421001, P.R. China
| | - Min Ma
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, P.R. China
| | - Zhixing Lu
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, P.R. China
| | - Liang Jing
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, P.R. China
| | - Xiaorong Li
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, P.R. China.
| | - Changwei Lin
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, P.R. China.
- School of Life Sciences, Central South University, Changsha, 410078, Hunan, China.
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20
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Zhang W, Wu G, Sun P, Zhu Y, Zhang H. circ_SMAD2 regulate colorectal cancer cells proliferation through targeting miR-1258/RPN2 signaling pathway. J Cancer 2021; 12:1678-1686. [PMID: 33613755 PMCID: PMC7890329 DOI: 10.7150/jca.50888] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 12/04/2020] [Indexed: 12/19/2022] Open
Abstract
Circular RNAs (circRNAs) are associated with various diseases, including cancers. However, their roles in colorectal cancer (CRC) have not been established. Hsa_circ_0000847 (circ_SMAD2) is a novel circRNA that was found to be elevated in CRC cell lines and tissues. High circ_SMAD2 levels were positively correlated with CRC clinicopathological features. Functional assays revealed that circ_SMAD2 enhanced CRC cell invasion, proliferation, and tumor growth. Mechanistically, circ_SMAD2 elevated Ribophorin II (RPN2) levels by inhibiting miR-1258. Therefore, circ_SMAD2 is a potential indicator for CRC progression.
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Affiliation(s)
- Wei Zhang
- Department of Gastrointestinal Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, Zhengzhou, Henan 450003, People's Republic of China
| | - Gang Wu
- Department of Gastrointestinal Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, Zhengzhou, Henan 450003, People's Republic of China
| | - Peichun Sun
- Department of Gastrointestinal Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, Zhengzhou, Henan 450003, People's Republic of China
| | - Yuanzeng Zhu
- Department of Gastrointestinal Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, Zhengzhou, Henan 450003, People's Republic of China
| | - Han Zhang
- Department of Gastrointestinal Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, Zhengzhou, Henan 450003, People's Republic of China
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21
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Zhao X, Zhao Z, Xu W, Liu H, Chang J, Xu W, Li S, Cao S, Hou J. Circ-SAR1A Promotes Renal Cell Carcinoma Progression Through miR-382/YBX1 Axis. Cancer Manag Res 2020; 12:7353-7361. [PMID: 32884349 PMCID: PMC7443449 DOI: 10.2147/cmar.s245918] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 06/30/2020] [Indexed: 01/01/2023] Open
Abstract
Background Accumulating evidence points to a role for circular RNAs (circRNAs) in important regulatory function in tumor advancement. We explored the effect and function of circ-SAR1A in renal cell carcinoma (RCC). Methods circ-SAR1A expression in RCC tissues and cell lines was explored by qRT-PCR. The roles of circ-SAR1A on RCC progression were explored by in vitro function assays. Moreover, we determined the underlying mechanism of circ-SAR1A in RCC progression through bioinformatics analysis and dual-luciferase reporter assays. Results Our data reveal that circ-SAR1A is significantly high in RCC tissues and cell lines. High circ-SAR1A levels are correlated to advanced Fuhrman grade, and lymph-node metastasis in RCC patients. Functional experiments indicate that circ-SAR1A suppression decreased RCC cell growth and invasion abilities in vitro. Mechanistically, circ-SAR1A upregulated YBX1 expression by sponging miR-382, resulting in promoting the growth and invasion in RCC cells. Conclusion Our data indicate that the circ-SAR1A/miR-382/YBX1 axis plays a critical role in RCC progression, which serve as a potential novel treatment strategy of RCC.
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Affiliation(s)
- Xiaolei Zhao
- Department of Urology, Huaihe Hospital of Henan University, Kaifeng 475000, People's Republic of China
| | - Zhenhua Zhao
- Department of Urology, Huaihe Hospital of Henan University, Kaifeng 475000, People's Republic of China
| | - Wenchao Xu
- Department of Urology, Huaihe Hospital of Henan University, Kaifeng 475000, People's Republic of China
| | - Hui Liu
- Department of Urology, Huaihe Hospital of Henan University, Kaifeng 475000, People's Republic of China
| | - Junkai Chang
- Department of Urology, Huaihe Hospital of Henan University, Kaifeng 475000, People's Republic of China
| | - Weibo Xu
- Department of Urology, Huaihe Hospital of Henan University, Kaifeng 475000, People's Republic of China
| | - Song Li
- Department of Urology, Huaihe Hospital of Henan University, Kaifeng 475000, People's Republic of China
| | - Songqiang Cao
- Department of Urology, Huaihe Hospital of Henan University, Kaifeng 475000, People's Republic of China
| | - Junqing Hou
- Department of Urology, Huaihe Hospital of Henan University, Kaifeng 475000, People's Republic of China
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22
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Wang J, Zhang JQ, Zhao XL, Lu JY, Weng ZM, Ding ZM, Yang FQ. Circular RNA DHX33 promotes malignant behavior in ccRCC by targeting miR-489-3p/MEK1 axis. Aging (Albany NY) 2020; 12:14885-14896. [PMID: 32717723 PMCID: PMC7425503 DOI: 10.18632/aging.103550] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 06/04/2020] [Indexed: 12/12/2022]
Abstract
Mounting evidence indicates that circular RNAs modulate the initiation of clear cell renal cell carcinoma (ccRCC). However, their specific roles in the malignancy of ccRCC is understudied. Here, we present a novel circular RNA, circDHX33, that is up-regulated in ccRCC cell lines and tissues. Upregulated circDHX33 in ccRCC patients significantly correlates with advanced TNM stage and metastasis. Suppressing circDHX33 expression inhibits the proliferation and invasion of cultured cells, and suppresses tumor growth in vivo. Mechanistically, we show that circDHX33 promotes ccRCC progression by sponging miR-489-3p and modulating MEK1 expression. In conclusion, our findings suggest that circDHX33 plays a role in promoting ccRCC via the miR-489-3p/MEK1 axis and may serve as a novel therapeutic target for the treatment of ccRCC patients
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Affiliation(s)
- Jie Wang
- Department of Urology, Ninghai First Hospital, Zhejiang 315600, China.,Department of Urology, Ninghai Hospital, Branch of Shanghai Tenth People's Hospital, Zhejiang 315600, China
| | - Jian-Qiu Zhang
- Department of Urology, Ninghai First Hospital, Zhejiang 315600, China.,Department of Urology, Ninghai Hospital, Branch of Shanghai Tenth People's Hospital, Zhejiang 315600, China
| | - Xiao-Lei Zhao
- Department of Urology, Huaihe Hospital of Henan University, Kaifeng 475000, China
| | - Jing-Yu Lu
- Department of Anesthesia, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Ze-Ming Weng
- Department of Urology, Ninghai First Hospital, Zhejiang 315600, China.,Department of Urology, Ninghai Hospital, Branch of Shanghai Tenth People's Hospital, Zhejiang 315600, China
| | - Zhen-Min Ding
- Department of Anesthesia, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Feng-Qiang Yang
- Department of Urology, Ninghai First Hospital, Zhejiang 315600, China.,Department of Urology, Ninghai Hospital, Branch of Shanghai Tenth People's Hospital, Zhejiang 315600, China.,Department of Urology, Shanghai Tenth People's Hospital, Tongji University, Shanghai 200072, China
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23
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Ren S, Lin P, Wang J, Yu H, Lv T, Sun L, Du G. Circular RNAs: Promising Molecular Biomarkers of Human Aging-Related Diseases via Functioning as an miRNA Sponge. Mol Ther Methods Clin Dev 2020; 18:215-29. [PMID: 32637451 DOI: 10.1016/j.omtm.2020.05.027] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Circular RNAs (circRNAs) are a new class of noncoding single-stranded RNAs that differ from linear microRNAs (miRNAs), since they form covalently closed loop structures without free 3′ poly(A) tails or 5′ caps. circRNAs are the competitive endogenous RNAs (ceRNAs) by binding to miRNA through miRNA response elements (MREs) (i.e., “miRNA sponge”), thereby reducing the quantity of miRNA available to target mRNA, subsequently promoting mRNA stability or protein expression, which involves the initiation and progress of human diseases. Owing to these features of abundance, stability, conservative property, and tissue and stage specificity, widely distributing in the extracellular space and in various bodily fluids, circRNAs can be considered as potential biomarkers for various diseases. Here, we reviewed the promising circRNAs being disease biomarkers, focused on their regulatory function by acting as miRNA sponges, and described their roles in cancer, cardiovascular or neurodegenerative diseases, osteoarthritis, rheumatoid arthritis, diabetes, and other human aging-related diseases, which provide a new direction for pathogenesis, diagnosis, and treatment of human aging-related diseases.
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24
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Abstract
Osteoarthritis (OA) is a very common chronic and degenerative joint disease characterized by persistent destruction of articular cartilage. Recently, increasing evidence showed that circular RNAs (circRNAs) play critical roles in OA progression. However, the functions of circRNAs in OA and their underlying mechanisms of action remain unclear. In the present study, the expression levels of circRNA-UBE2G1 and HIF-1a were significantly increased in OA tissues, whereas miR‑373 expression was downregulated. Function assays showed that circRNA-UBE2G1 inhibition reduced the effects of LPS on C28/I2 cells viability and apoptosis. In terms of mechanism, we revealed that circRNA-UBE2G1 binds to miR‑373 as competing endogenous RNAs (ceRNAs). HIF-1a might act as a target of miR‑373. Moreover, miR‑373 suppression or HIF-1a overexpression restored the effects of circRNA-UBE2G1 downregulation on LPS-induced chondrocytes injury. Collectively, our data suggest that circRNA-UBE2G1 facilitates the progression in the LPS-induced OA cell model via regulating the miR‑373/HIF-1a axis. ABBREVIATIONS OA: Osteoarthritis; Circular RNAs; miRNAs: MicroRNAs; Mut: Mutant; WT: Wild type; UTR: Untranslated region.
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Affiliation(s)
- Guang Chen
- Department of Orthopedics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University , Zhengzhou, China
| | - Tao Liu
- Department of Orthopedics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University , Zhengzhou, China
| | - Bofan Yu
- Department of Orthopedics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University , Zhengzhou, China
| | - Bingyi Wang
- Department of Orthopedics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University , Zhengzhou, China
| | - Qiang Peng
- Department of Orthopedics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University , Zhengzhou, China
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Bai Y, Li X. hsa_circ_0008285 Facilitates the Progression of Cervical Cancer by Targeting miR-211-5p/SOX4 Axis. Cancer Manag Res 2020; 12:3927-3936. [PMID: 32547228 PMCID: PMC7263883 DOI: 10.2147/cmar.s244317] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 04/26/2020] [Indexed: 12/21/2022] Open
Abstract
Introduction Emerging evidence has demonstrated that circRNAs are implicated in the progression of cervical cancer (CC). However, the roles and underlying mechanisms of circRNAs remain unclear in CC. Methods QRT-PCR was performed to detect hsa_circ_0008285 expression in CC tissues and cell lines. The roles of hsa_circ_0008285 on CC progression were explored by function assays. Next, the underlying mechanisms of hsa_circ_0008285 in CC progression were determined by bioinformatics analysis, dual-luciferase reporter and RIP assays. Results In the present study, we identified a new circRNA hsa_circ_0008285, which was significantly up-regulated in CC tissues and cell lines. Loss-of-function assays showed that hsa_circ_0008285 suppression reduced the proliferation and invasion of CC cells in vitro and reduced tumor growth in vivo. In mechanism, bioinformatics analysis, dual-luciferase reporter and RIP assays showed that hsa_circ_0008285 served as a sponge for miR-211-5p in CC. Next, we confirmed that SOX4 served as a target gene for miR-211-5p in CC. Additionally, we revealed that miR-211-5p inhibitors abolished the effects of hsa_circ_0008285 on SOX4 expression in CC cells. Conclusion Therefore, our research highlighted that hsa_circ_0008285 promoted CC progression via serving as a ceRNA of miR-211-5p to release SOX4, which might provide a potential therapeutic target for tumor treatment.
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Affiliation(s)
- Youpeng Bai
- Obstetrical Department, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang 471009, Henan, People's Republic of China
| | - Xicong Li
- Obstetrical Department, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang 471009, Henan, People's Republic of China
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Liu R, Zhou M, Zhang P, Zhao Y, Zhang Y. Cell proliferation and invasion is promoted by circSERPINA3 in nasopharyngeal carcinoma by regulating miR-944/MDM2 axis. J Cancer 2020; 11:3910-3918. [PMID: 32328195 PMCID: PMC7171482 DOI: 10.7150/jca.42799] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 03/02/2020] [Indexed: 12/22/2022] Open
Abstract
Growing evidence has demonstrated that in tumor progression, circular RNAs (circRNAs) play important roles. However, the roles of circRNAs in nasopharyngeal carcinoma (NPC) have not been fully elucidated. In this study, it was demonstrated that that hsa_circ_0033074 (circSERPINA3) expression was found to be significantly upregulated in NPC tissues and cell lines. CircSERPINA3 inhibition significantly attenuated the invasion and proliferation abilities of NPC cells. The mechanism by which circSERPINA3 interacted with miR-944 was identified and MDM2 was demonstrated to function as a target gene of miR-944. Rescue experiments showed that miR-944 inhibitors or MDM2 overexpression reserved the effects of circSERPINA3 knockdown on NPC progression. Therefore, our study uncovered the circSERPINA3/miR-944/MDM2 axis in NPC, which may be a potential NPC therapeutic target.
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Affiliation(s)
- Rui Liu
- Department of Rhinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Minghui Zhou
- Department of Rhinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Puwen Zhang
- Department of Rhinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Yulin Zhao
- Department of Rhinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Yujie Zhang
- Department of Rhinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Li L, Yu P, Zhang P, Wu H, Chen Q, Li S, Wang Y. Upregulation of hsa_circ_0007874 suppresses the progression of ovarian cancer by regulating the miR-760/SOCS3 pathway. Cancer Med 2020; 9:2491-2499. [PMID: 32023009 PMCID: PMC7131836 DOI: 10.1002/cam4.2866] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 12/26/2019] [Accepted: 12/30/2019] [Indexed: 01/17/2023] Open
Abstract
Ovarian cancer (OVA) is a fatal and common malignancy in women worldwide. Circular RNAs (circRNAs) consist of a family of circular endogenous RNAs generated by selective splicing, and they are involved in many diseases. Previous studies reported that hsa_circ_0007874 is aberrantly expressed in cancer and functions in tumorigenesis. While the hsa_circ_0007874 role in OVA is unclear. Here, we detected the hsa_circ_0007874 expression in OVA cell lines using Rt‐qPCR. Hsa_circ_0007874 subcellular localization was confirmed by fluorescence in situ hybridization. The relationship between hsa_circ_0007874, microRNAs (miRNAs), and relative protein levels was assessed using the luciferase reporter assays. Results verified that hsa_circ_0007874 is downregulated in OVA cell lines. hsa_circ_0007874 overexpression decreased the OVA cell migration and proliferation in vitro and in vivo. Bioinformatics and luciferase reporter assays confirmed that miR‐760 and SOCS3 are the downstream targets of hsa_circ_0007874. Downregulation of SOCS3 or miR‐760 overexpression restored the migration and proliferation ability of SKOV3 or A2780 cells overexpressing hsa_circ_0007874. Downregulation of SOCS3 restored the proliferation and migration in miR‐760 knockdown SKOV3 and A2780 cells. In summary, the data suggest that hsa_circ_0007874 acts as a tumor suppressor by regulating the miR‐760/SOCS3 axis, highlighting its potential as an effective therapeutic target for OVA.
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Affiliation(s)
- Li Li
- Department of Gynecology and Obstetrics, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Poling Yu
- Department of Surgery, School of Medicine, National Yang-Ming University, Taipei, Taiwan, China
| | - Ping Zhang
- Department of Reproductive Medicine, Linyi People's Hospital, Linyi City, China
| | - Huanmei Wu
- Department of BioHealth Informatics, School of Informatics and Computing, Indiana University Purdue University Indianapolis, Indianapolis, IN, USA
| | - Qizhen Chen
- Department of Gynecology and Obstetrics, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Shuangdi Li
- Department of Gynecology, Shanghai First maternity and infant Hospital, Shanghai, China
| | - Yanqiu Wang
- Reproductive Medical Center, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
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Zhang X, Zhong B, Zhang W, Wu J, Wang Y. Circular RNA CircMTO1 Inhibits Proliferation of Glioblastoma Cells via miR-92/WWOX Signaling Pathway. Med Sci Monit 2019; 25:6454-6461. [PMID: 31456594 PMCID: PMC6738003 DOI: 10.12659/msm.918676] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Background Circular RNA circMTO1 has been reported to inhibit the progression of many types of cancers. However, the role of circMTO1 in the progression of glioblastoma remains unclear. The purpose of our study was to explore the potential involvement of circMTO1 in glioblastoma. Material/Methods The expression of circMTO1 in human glioblastoma tissues was determined via quantitative real-time polymerase chain reaction (qRT-PCR). The effect of circMTO1 on proliferation of human glioblastoma cell line U251 was assessed through the Cell Counting Kit-8 (CCK-8) and colony formation assay. The regulatory interaction between circMTO1 and miR-92 was explored by bioinformatics prediction and luciferase reporter assay. Results We showed that circMTO1 was markedly downregulated in glioblastoma tissues compared with adjacent normal tissues. Lower circMTO1 level was significantly associated with shorter overall survival among patients with glioblastoma. In addition, circMTO1 inhibited proliferation of cell U251 cells. Mechanistically, circMTO1 upregulates the expression of WWOX in U251 cells, and WWOX mediates circMTO1-induced inhibition of proliferation of U251 cells. In addition, miR-92 downregulates the expression of WWOX by the targeting its mRNA 3′ UTR. More importantly, circMTO1 directly interact with miR-92, and subsequently serves as a miRNA sponge to upregulate WWOX expression. Conclusions Our results demonstrate that circMTO1 inhibits the proliferation of glioblastoma cells via the miR-92/WWOX signaling pathway.
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Affiliation(s)
- Xuewen Zhang
- Department of Neurosurgery, Suzhou Science and Technology Town Hospital, Suzhou, Jiangsu, China (mainland)
| | - Bo Zhong
- Department of Neurosurgery, Yidu Central Hospital of Weifang, Weifang, Shandong, China (mainland)
| | - Wenjie Zhang
- Department of Neurosurgery, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong, China (mainland)
| | - Jie Wu
- Department of Neurosurgery, Suzhou Science and Technology Town Hospital, Suzhou, Jiangsu, China (mainland)
| | - Yu Wang
- Department of Neurosurgery, Suzhou Science and Technology Town Hospital, Suzhou, Jiangsu, China (mainland)
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Ge Z, Wang C, Zhang J, Li X, Hu J. Tempol Protects Against Acetaminophen Induced Acute Hepatotoxicity by Inhibiting Oxidative Stress and Apoptosis. Front Physiol 2019; 10:660. [PMID: 31214044 PMCID: PMC6554449 DOI: 10.3389/fphys.2019.00660] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 05/09/2019] [Indexed: 12/12/2022] Open
Abstract
Acetaminophen (APAP)-induced acute hepatotoxicity is the leading cause of drug-induced acute liver failure. The aim of this study was to evaluate the effects of 4-hydroxy-2,2,6,6-tetramethylpiperidine-N-oxyl (tempol) on the protection of APAP-induced hepatotoxicity in mice. Mice were pretreated with a single dose of tempol (20 mg/kg per day) orally for 7 days. On the seventh day, mice were injected with a single dose of APAP (300 mg/kg) to induce acute hepatotoxicity. Our results showed that tempol treatment markedly improved liver functions with alleviations of histopathological damage induced by APAP. Tempol treatment upregulated levels of antioxidant proteins, including superoxide dismutase, catalase, and glutathione. Also, phosphorylation of phosphoinositide 3-kinase (PI3K) and protein kinase B (Akt) and protein expression of nuclear factor erythroid 2-related factor (Nrf 2) and heme oxygense-1 (HO-1) were all increased by tempol, which indicated tempol protected against APAP-induced hepatotoxicity via the PI3K/Akt/Nrf2 pathway. Moreover, tempol treatment decreased pro-apoptotic protein expressions (cleaved caspase-3 and Bax) and increased anti-apoptotic Bcl-2 in liver, as well as reducing apoptotic cells of TUNEL staining, which suggested apoptotic effects of tempol treatment. Overall, we found that tempol normalizes liver function in APAP-induced acute hepatotoxicity mice via activating PI3K/Akt/Nrf2 pathway, thus enhancing antioxidant response and inhibiting hepatic apoptosis.
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Affiliation(s)
- Zheng Ge
- Department of General Surgery, Huaihe Hospital of Henan University, Kaifeng, China
| | - Chenyu Wang
- Department of General Surgery, Huaihe Hospital of Henan University, Kaifeng, China
| | - Junjie Zhang
- Department of General Surgery, Huaihe Hospital of Henan University, Kaifeng, China
| | - Xiwang Li
- Department of General Surgery, Huaihe Hospital of Henan University, Kaifeng, China
| | - Junhong Hu
- Department of General Surgery, Huaihe Hospital of Henan University, Kaifeng, 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] [What about the content of this article? (0)] [Affiliation(s)] [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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Zhang B, Chen M, Jiang N, Shi K, Qian R. A regulatory circuit of circ-MTO1/miR-17/QKI-5 inhibits the proliferation of lung adenocarcinoma. Cancer Biol Ther 2019; 20:1127-1135. [PMID: 30975029 PMCID: PMC6606010 DOI: 10.1080/15384047.2019.1598762] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 03/07/2019] [Accepted: 03/13/2019] [Indexed: 12/22/2022] Open
Abstract
Circular RNA (circRNA) is a new class of non-coding RNA that plays a pivotal role in carcinogenesis. Recently, circ-MTO1 (hsa_circ_0007874) was shown to be a cancer-related circRNA. However, its role in lung adenocarcinoma (LUAD) has not been reported. Here, we found that circ-MTO1 was significantly down-regulated in LUAD, which was closely associated with malignant features and dismal prognosis. Enforced expression of circ-MTO1 suppressed the growth of LUAD cells both in vitro and in vivo. Subsequent mechanism experiments showed that circ-MTO1 served as a sponge of oncogenic miR-17 to increase the expression of RNA-binding protein QKI-5, leading to the inactivation of Notch signaling pathway, thereby restraining the growth of LUAD. Importantly, increased QKI-5 expression caused by circ-MTO1 overexpression in turn promoted circ-MTO1 expression. Clinically, circ-MTO1 expression was strongly positively correlated with QKI-5 expression, but negatively correlated with miR-17 expression. Taken together, our data suggest that circ-MTO1 is a critical negative regulator of LUAD and elucidate the potential molecular mechanism of a novel circ-MTO1/miR-17/QKI-5 feedback loop in inhibiting LUAD progression.
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Affiliation(s)
- Binbin Zhang
- Thoracic surgery ward one, HeNan Provincial Chest Hospital, Zhengzhou, P.R. China
| | - Maolin Chen
- Thoracic surgery ward one, HeNan Provincial Chest Hospital, Zhengzhou, P.R. China
| | - Nan Jiang
- Thoracic surgery ward one, HeNan Provincial Chest Hospital, Zhengzhou, P.R. China
| | - Kefeng Shi
- Thoracic surgery ward one, HeNan Provincial Chest Hospital, Zhengzhou, P.R. China
| | - Runlin Qian
- Thoracic surgery ward one, HeNan Provincial Chest Hospital, Zhengzhou, P.R. China
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