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Rahmati A, Mafi A, Soleymani F, Babaei Aghdam Z, Masihipour N, Ghezelbash B, Asemi R, Aschner M, Vakili O, Homayoonfal M, Asemi Z, Sharifi M, Azadi A, Mirzaei H, Aghadavod E. Circular RNAs: pivotal role in the leukemogenesis and novel indicators for the diagnosis and prognosis of acute myeloid leukemia. Front Oncol 2023; 13:1149187. [PMID: 37124518 PMCID: PMC10140500 DOI: 10.3389/fonc.2023.1149187] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Accepted: 03/29/2023] [Indexed: 05/02/2023] Open
Abstract
Acute myeloid leukemia (AML) is an aggressive hematological malignancy and affected patients have poor overall survival (OS) rates. Circular RNAs (circRNAs) are a novel class of non-coding RNAs (ncRNAs) with a unique loop structure. In recent years, with the development of high-throughput RNA sequencing, many circRNAs have been identified exhibiting either up-regulation or down-regulation in AML patients compared with healthy controls. Recent studies have reported that circRNAs regulate leukemia cell proliferation, stemness, and apoptosis, both positively and negatively. Additionally, circRNAs could be promising biomarkers and therapeutic targets in AML. In this study, we present a comprehensive review of the regulatory roles and potentials of a number of dysregulated circRNAs in AML.
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Affiliation(s)
- Atefe Rahmati
- Department of Hematology and Blood Banking, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Basic Sciences, Faculty of Medicine, Neyshabur University of Medical Sciences, Neyshabur, Iran
| | - Alireza Mafi
- Department of Clinical Biochemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Firooze Soleymani
- Department of Medical Biotechnology and Nanotechnology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zahra Babaei Aghdam
- Imaging Sciences Research Group, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Niloufar Masihipour
- Department of Medicine, Lorestan University of Medical Science, Lorestan, Iran
| | - Behrooz Ghezelbash
- Department of Immunology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Reza Asemi
- Department of Internal Medicine, School of Medicine, Cancer Prevention Research Center, Seyyed Al-Shohada Hospital, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Omid Vakili
- Department of Clinical Biochemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mina Homayoonfal
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Zatollah Asemi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Mehran Sharifi
- Department of Internal Medicine, School of Medicine, Cancer Prevention Research Center, Seyyed Al-Shohada Hospital, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Abbas Azadi
- Department of Internal Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
- *Correspondence: Abbas Azadi, ; Esmat Aghadavod, ; Hamed Mirzaei, ;
| | - Esmat Aghadavod
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
- Department of Clinical Biochemistry, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
- *Correspondence: Abbas Azadi, ; Esmat Aghadavod, ; Hamed Mirzaei, ;
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Guo Y, Hu G, Tian B, Ma M, Long F, Chen M. Circ_RNF13 Regulates the Stemness and Chemosensitivity of Colorectal Cancer by Transcriptional Regulation of DDX27 Mediated by TRIM24 Stabilization. Cancers (Basel) 2022; 14:cancers14246218. [PMID: 36551703 PMCID: PMC9776557 DOI: 10.3390/cancers14246218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/28/2022] [Accepted: 11/28/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Colorectal cancer (CRC) is one of the most commonly diagnosed cancers with high incidence and poor prognosis worldwide. Circ_RNF13 is upregulated in CRC; however, the biological roles and downstream signaling of circ_RNF13 remain undefined. METHODS The characterization of circ_RNF13 was determined by Sanger sequencing, qRT-PCR, subcellular fractionation assay, and RNA FISH. Western blot analysis and qRT-PCR were employed to detect the expression of the key molecules and stemness markers in CRC tumor samples and cells. The stem-like activities of CRC cells were assessed by sphere formation assay, flow cytometry, and immunofluorescence (IF). Cell viability was monitored by CCK-8 assay. The chemosensitivity of CRC cells was assessed by colony formation and cell apoptosis assays. Bioinformatics analysis, RIP assay, RNA pull-down assay, and FISH/IF staining were used to detect the association between circ_RNF13 and TRIM24. The transcriptional regulation of DDX27 was investigated by ChIP assay, and the post-translational regulation of TRIM24 was detected by Co-IP. The in vitro findings were verified in a xenograft model. RESULTS circ_RNF13 and DDX27 were elevated in CRC tumor samples and cells. Knockdown of circ_RNF13 or DDX27 inhibited stemness and increased chemosensitivity in CRC cells. Mechanistically, circ_RNF13 regulated DDX27 expression via TRIM24-mediated transcriptional regulation, and circ_RNF13 stabilized TRIM24 via suppressing FBXW7-mediated TRIM24 degradation. In vivo studies revealed that the knockdown of circ_RNF13 impaired stemness and enhanced the chemosensitivity of CRC in the xenograft model. CONCLUSION circ_RNF13 regulated the stemness and chemosensitivity of CRC by transcriptional regulation of DDX27 mediated by TRIM24 stabilization.
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Affiliation(s)
| | | | | | | | | | - Miao Chen
- Correspondence: ; Tel.: +86-150-8488-6883
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Zhou M, Gao X, Zheng X, Luo J. Functions and clinical significance of circular RNAs in acute myeloid leukemia. Front Pharmacol 2022; 13:1010579. [PMID: 36506538 PMCID: PMC9729264 DOI: 10.3389/fphar.2022.1010579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 11/08/2022] [Indexed: 11/25/2022] Open
Abstract
Circular RNAs (circRNAs) are a class of covalently closed single-stranded RNA molecules. Four types of circRNAs have been reported in animal cells, and they have typical characteristics in their biogenesis, nuclear export and degradation. Advances in our understanding of the molecular functions of circRNAs in sponging microRNAs, modulating transcription, regulating RNA-binding proteins, as well as encoding proteins have been made very recently. Dysregulated circRNAs are associated with human diseases such as acute myeloid leukemia (AML). In this review, we focus on the recently described mechanisms, role and clinical significance of circRNAs in AML. Although great progress of circRNAs in AML has been achieved, substantial efforts are still required to explore whether circRNAs exert their biological function by other mechanisms such as regulation of gene transcription or serving as translation template in AML. It is also urgent that researchers study the machineries regulating circRNAs fate, the downstream effectors of circRNAs modulatory networks, and the clinical application of circRNAs in AML.
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Affiliation(s)
- Min Zhou
- School of Life Sciences, Chongqing University, Chongqing, China,Center of Plant Functional Genomics, Institute of Advanced Interdisciplinary Studies, Chongqing University, Chongqing, China,*Correspondence: Min Zhou, ; Jing Luo,
| | - Xianling Gao
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Xin Zheng
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, China
| | - Jing Luo
- Department of Anesthesiology, The First People’s Hospital of Yunnan Province, Kunming, China,Department of Anesthesiology, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China,*Correspondence: Min Zhou, ; Jing Luo,
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Ye R, Lu X, Liu J, Duan Q, Xiao J, Duan X, Yue Z, Liu F. CircSOD2 Contributes to Tumor Progression, Immune Evasion and Anti-PD-1 Resistance in Hepatocellular Carcinoma by Targeting miR-497-5p/ANXA11 Axis. Biochem Genet 2022; 61:597-614. [PMID: 36008700 DOI: 10.1007/s10528-022-10273-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 06/22/2022] [Indexed: 11/25/2022]
Abstract
Circular RNAs (circRNAs) can function as functional molecules in hepatocellular carcinoma (HCC). Herein, circRNA superoxide dismutase 2 (circSOD2) was researched in HCC progression and immune system. The real-time polymerase chain reaction (qRT-PCR) was used for quantification of circSOD2, microRNA-497-5p (miR-497-5p) and Annexin A11 (ANXA11). Cell assays were performed by 3-(4, 5-dimethylthiazol-2-y1)-2, 5-diphenyl tetrazolium bromide (MTT) and colony formation assays for proliferation, flow cytometry for apoptosis and cell cycle, wound healing assay for migration and transwell assay for migration/invasion. ANXA11 and metastatic protein levels were measured by western blot. Dual-luciferase reporter and RNA immunoprecipitation (RIP) assays were performed to analyze target binding. CD8+ T cell immunity was assessed by Immunohistochemistry (IHC) assay, and the effect of circSOD2 on programmed cell death 1 (PD-1) immune checkpoint inhibitors (anti-PD-1) therapy was evaluated by mice xenograft assay. CircSOD2 was upregulated in HCC tissues and cells. Knockdown of circSOD2 resulted in HCC cell growth inhibition, apoptosis promotion, cell cycle arrest and metastasis suppression. Mechanically, circSOD2 promoted HCC development by acting as a miR-497-5p sponge and miR-497-5p played a tumor-inhibitory role in HCC cells by targeting ANXA11. Moreover, circSOD2 induced upregulation of ANXA11 expression by interacting with miR-497-5p. Also, the promoting effects of circSOD2 on immune evasion and anti-PD-1 resistance were related to miR-497-5p/ANXA11 axis. This study elucidated the pivotal function of circSOD2 in HCC progression and immunosuppression by mediating miR-497-6p/ANXA11 axis. CircSOD2/miR-497-5p/ANXA11 axis was a novel view of circRNA research in HCC.
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Affiliation(s)
- Rong Ye
- Department of General Surgery 3, The First Affiliated Hospital of Gannan Medical University, No. 128 Jinling Road, Jingkai District, Ganzhou, 341000, China
| | - Xingyu Lu
- Outpatient department, Ganzhou City Third People's Hospital, Ganzhou, 341001, China
| | - Jianping Liu
- Department of General Surgery 3, The First Affiliated Hospital of Gannan Medical University, No. 128 Jinling Road, Jingkai District, Ganzhou, 341000, China
| | - Qing Duan
- Department of General Surgery 3, The First Affiliated Hospital of Gannan Medical University, No. 128 Jinling Road, Jingkai District, Ganzhou, 341000, China
| | - Junqi Xiao
- Department of General Surgery 3, The First Affiliated Hospital of Gannan Medical University, No. 128 Jinling Road, Jingkai District, Ganzhou, 341000, China
| | - Xunhong Duan
- Department of General Surgery 3, The First Affiliated Hospital of Gannan Medical University, No. 128 Jinling Road, Jingkai District, Ganzhou, 341000, China
| | - Zhibiao Yue
- Department of General Surgery 3, The First Affiliated Hospital of Gannan Medical University, No. 128 Jinling Road, Jingkai District, Ganzhou, 341000, China.
| | - Fengen Liu
- Department of General Surgery 3, The First Affiliated Hospital of Gannan Medical University, No. 128 Jinling Road, Jingkai District, Ganzhou, 341000, China.
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Liccardo F, Iaiza A, Śniegocka M, Masciarelli S, Fazi F. Circular RNAs Activity in the Leukemic Bone Marrow Microenvironment. Noncoding RNA 2022; 8:50. [PMID: 35893233 PMCID: PMC9326527 DOI: 10.3390/ncrna8040050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/20/2022] [Accepted: 06/29/2022] [Indexed: 11/17/2022] Open
Abstract
Acute myeloid leukemia (AML) is a hematological malignancy originating from defective hematopoietic stem cells in the bone marrow. In spite of the recent approval of several molecular targeted therapies for AML treatment, disease recurrence remains an issue. Interestingly, increasing evidence has pointed out the relevance of bone marrow (BM) niche remodeling during leukemia onset and progression. Complex crosstalk between AML cells and microenvironment components shapes the leukemic BM niche, consequently affecting therapy responsiveness. Notably, circular RNAs are a new class of RNAs found to be relevant in AML progression and chemoresistance. In this review, we provided an overview of AML-driven niche remodeling. In particular, we analyzed the role of circRNAs and their possible contribution to cell-cell communication within the leukemic BM microenvironment. Understanding these mechanisms will help develop a more effective treatment for AML.
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Affiliation(s)
| | | | | | - Silvia Masciarelli
- Department of Anatomical, Histological, Forensic & Orthopedic Sciences, Section of Histology & Medical Embryology, Sapienza University of Rome, Via A. Scarpa, 14-16, 00161 Rome, Italy; (F.L.); (A.I.); (M.Ś.)
| | - Francesco Fazi
- Department of Anatomical, Histological, Forensic & Orthopedic Sciences, Section of Histology & Medical Embryology, Sapienza University of Rome, Via A. Scarpa, 14-16, 00161 Rome, Italy; (F.L.); (A.I.); (M.Ś.)
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Du J, Jia F, Wang L. Advances in the Study of circRNAs in Hematological Malignancies. Front Oncol 2022; 12:900374. [PMID: 35795049 PMCID: PMC9250989 DOI: 10.3389/fonc.2022.900374] [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: 03/20/2022] [Accepted: 05/23/2022] [Indexed: 11/26/2022] Open
Abstract
Circular RNAs (circRNAs) are non–protein-coding RNAs that have a circular structure and do not possess a 5` cap or 3` poly-A tail. Their structure is more stable than that of linear RNAs, and they are difficult to deform via hydrolysis. Advancements in measurement technology such as RNA sequencing have enabled the detection of circRNAs in various eukaryotes in both in vitro and in vivo studies. The main function of circRNAs involves sponging of microRNAs (MiRNAs) and interaction with proteins associated with physiological and pathological processes, while some circRNAs are involved in translation. circRNAs act as tumor suppressors or oncogenes during the development of many tumors and are emerging as new diagnostic and prognostic biomarkers. They also affect resistance to certain chemotherapy drugs such as imatinib. The objective of this review is to investigate the expression and clinical significance of circRNAs in hematological malignancies. We will also explore the effect of circRNAs on proliferation and apoptosis in hematological malignancy cells and their possible use as biomarkers or targets to determine prognoses. The current literature indicates that circRNAs may provide new therapeutic strategies for patients with hematologic malignancies.
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Affiliation(s)
- Jingyi Du
- School of Clinical Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
- Central Laboratory, Linyi People’s Hospital, Linyi, China
| | - Feiyu Jia
- Department of Education and Teaching, Linyi People’s Hospital, Linyi, China
- *Correspondence: Lijuan Wang, ; Feiyu Jia,
| | - Lijuan Wang
- Central Laboratory, Linyi People’s Hospital, Linyi, China
- Linyi Key Laboratory of Tumor Biology, Linyi, China
- *Correspondence: Lijuan Wang, ; Feiyu Jia,
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CircRNF13 Promotes the Malignant Progression of Pancreatic Cancer through Targeting miR-139-5p/IGF1R Axis. JOURNAL OF ONCOLOGY 2021; 2021:6945046. [PMID: 34899908 PMCID: PMC8664507 DOI: 10.1155/2021/6945046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 11/13/2021] [Indexed: 02/07/2023]
Abstract
Background Mounting evidence has shown circular RNAs (circRNAs) play an important role in the initiation and progression of pancreatic cancer (PC). Meanwhile, circRNAs may serve as the biomarkers for the diagnosis, treatment, and prognosis of PC. Therefore, it is urgent to elucidate the function and underlying mechanism of circRNAs in the development of PC. Methods The Cancer-Specific CircRNA Database (CSCD), Circular RNA Interactome database (circinteractome database), and reverse transcription-quantitative polymerase chain reaction (RT-qPCR) were used to verify the expression level of circRNF13 in PC cell lines. Fluorescence in situ hybridization (FISH) and RNase protection assay were used to detect the localization and structure of circRNF13. Then, cell functional experiments were employed to estimate the proliferated, migrated, and invasive abilities in PC. Furthermore, bioinformatic tools, luciferase dual reporter assay, and RT-qPCR were used to investigate the interaction among circRNF13, miR-139-5p, and IGF1R. Eventually, the rescue functional experiments were employed to confirm that circRNF13 targeted the miR-139-5p/IGF1R axis to participate in the development of PC. Results CircRNF13 was overexpressed in PC cell lines compared with the normal pancreatic duct cell line. Additionally, inhibition of circRNF13 impaired the proliferation, migration, and invasion of PC cells. CircRNF13 could serve as the molecular sponge of miR-139-5p to inhibit its association with IGF1R that eventually accelerated the malignant progression of PC. Conclusion CircRNF13 serves as a competitive endogenous RNA of IGF1R to inhibit the function of miR-139-5p that eventually reinforces the malignant phenotype of PC.
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Singh V, Uddin MH, Zonder JA, Azmi AS, Balasubramanian SK. Circular RNAs in acute myeloid leukemia. Mol Cancer 2021; 20:149. [PMID: 34794438 PMCID: PMC8600814 DOI: 10.1186/s12943-021-01446-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 10/22/2021] [Indexed: 01/01/2023] Open
Abstract
Although mechanistic studies clarifying the molecular underpinnings of AML have facilitated the development of several novel targeted therapeutics, most AML patients still relapse. Thus, overcoming the inherent and acquired resistance to current therapies remains an unsolved clinical problem. While current diagnostic modalities are primarily defined by gross morphology, cytogenetics, and to an extent, by deep targeted gene sequencing, there is an ongoing demand to identify newer diagnostic, therapeutic and prognostic biomarkers for AML. Recent interest in exploring the role of circular RNA (circRNA) in elucidating AML biology and therapy resistance has been promising. This review discerns the circular RNAs’ evolving role on the same scientific premise and attempts to identify its potential in managing AML.
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Affiliation(s)
- Vijendra Singh
- Department of Oncology, Karmanos Cancer Institute/Wayne State University, 4100 John R, HWCRC 740.2, Detroit, MI, 48201, USA
| | - Mohammed Hafiz Uddin
- Department of Oncology, Wayne State University School of Medicine, 4100 John R, HWCRC 732, Detroit, MI, 48201, USA
| | - Jeffrey A Zonder
- Department of Oncology, Karmanos Cancer Institute/Wayne State University, 4100 John R, HWCRC 740.2, Detroit, MI, 48201, USA
| | - Asfar S Azmi
- Department of Oncology, Wayne State University School of Medicine, 4100 John R, HWCRC 732, Detroit, MI, 48201, USA
| | - Suresh Kumar Balasubramanian
- Department of Oncology, Karmanos Cancer Institute/Wayne State University, 4100 John R, HWCRC 740.2, Detroit, MI, 48201, USA.
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