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Liu F, Wang YL, Wei JM, Huang ZD. Upregulation of circ_0000142 promotes multiple myeloma progression by adsorbing miR-610 and upregulating AKT3 expression. J Biochem 2021; 169:327-336. [PMID: 32970816 DOI: 10.1093/jb/mvaa106] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 09/02/2020] [Indexed: 12/14/2022] Open
Abstract
Circular RNAs (circRNAs) play an important regulatory role in a variety of malignancies. Nevertheless, the role of circ_0000142 in multiple myeloma (MM) and its regulatory mechanism remains largely unknown. Real-time polymerase chain reaction was employed to detect the expressions of circ_0000142 and miR-610 in MM tissues and cell lines. The expression of AKT3 and apoptosis-related proteins (Bcl-2, Bax) in MM cells was detected by western blot. The correlation between the expression level of circ_0000142 and the clinicopathological parameters of MM patients was analysed. Cell proliferation, apoptosis, migration and invasion were monitored by Cell Counting Kit 8 assay, flow cytometry analysis and Transwell assay, respectively. The dual-luciferase reporter gene assay and RNA immunoprecipitation assay were employed to verify the targeting relationship between circ_0000142 and miR-610. In this study, it was demonstrated that, circ_0000142 was highly expressed in MM patients, and its high expression level was significantly associated with increased International Staging System and Durie-Salmon stage. Overexpression of circ_0000142 enhanced MM cell proliferation, migration, invasion and suppressed cell apoptosis, while knocking down circ_0000142 had the opposite effects. Mechanistically, circ_0000142 functioned as a competitive endogenous RNA, directly targeting miR-610 and positively regulating AKT3 expression. In brief, circ_0000142 enhances the proliferation and metastasis of MM cells by modulating the miR-610/AKT3 axis.
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Affiliation(s)
| | | | | | - Zhao-Dong Huang
- Department of Intervention, Linyi Central Hospital, No. 17, Health Road, Yishui County, Linyi City, 276400 Shandong Province, China
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Jiao K, Walsh LJ, Ivanovski S, Han P. The Emerging Regulatory Role of Circular RNAs in Periodontal Tissues and Cells. Int J Mol Sci 2021; 22:ijms22094636. [PMID: 33924932 PMCID: PMC8124626 DOI: 10.3390/ijms22094636] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 04/24/2021] [Accepted: 04/24/2021] [Indexed: 02/07/2023] Open
Abstract
Periodontitis is a chronic complex inflammatory disease associated with a destructive host immune response to microbial dysbiosis, leading to irreversible loss of tooth-supporting tissues. Regeneration of functional periodontal soft (periodontal ligament and gingiva) and hard tissue components (cementum and alveolar bone) to replace lost tissues is the ultimate goal of periodontal treatment, but clinically predictable treatments are lacking. Similarly, the identification of biomarkers that can be used to accurately diagnose periodontitis activity is lacking. A relatively novel category of molecules found in oral tissue, circular RNAs (circRNAs) are single-stranded endogenous, long, non-coding RNA molecules, with covalently circular-closed structures without a 5' cap and a 3' tail via non-classic backsplicing. Emerging research indicates that circRNAs are tissue and disease-specific expressed and have crucial regulatory functions in various diseases. CircRNAs can function as microRNA or RNA binding sites or can regulate mRNA. In this review, we explore the biogenesis and function of circRNAs in the context of the emerging role of circRNAs in periodontitis pathogenesis and the differentiation of periodontal cells. CircMAP3K11, circCDK8, circCDR1as, circ_0062491, and circ_0095812 are associated with pathological periodontitis tissues. Furthermore, circRNAs are expressed in periodontal cells in a cell-specific manner. They can function as microRNA sponges and can form circRNA-miRNA-mRNA networks during osteogenic differentiation for periodontal-tissue (or dental pulp)-derived progenitor cells.
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Affiliation(s)
- Kexin Jiao
- Epigenetics Nanodiagnostic and Therapeutic Group, Center for Oral-Facial Regeneration, Rehabilitation and Reconstruction (COR3), School of Dentistry, Faculty of Health and Behavioural Sciences, The University of Queensland, Brisbane, QLD 4006, Australia;
| | - Laurence J. Walsh
- School of Dentistry, Faculty of Health and Behavioural Sciences, The University of Queensland, Brisbane, QLD 4006, Australia;
| | - Sašo Ivanovski
- Epigenetics Nanodiagnostic and Therapeutic Group, Center for Oral-Facial Regeneration, Rehabilitation and Reconstruction (COR3), School of Dentistry, Faculty of Health and Behavioural Sciences, The University of Queensland, Brisbane, QLD 4006, Australia;
- School of Dentistry, Faculty of Health and Behavioural Sciences, The University of Queensland, Brisbane, QLD 4006, Australia;
- Correspondence: (S.I.); (P.H.)
| | - Pingping Han
- Epigenetics Nanodiagnostic and Therapeutic Group, Center for Oral-Facial Regeneration, Rehabilitation and Reconstruction (COR3), School of Dentistry, Faculty of Health and Behavioural Sciences, The University of Queensland, Brisbane, QLD 4006, Australia;
- School of Dentistry, Faculty of Health and Behavioural Sciences, The University of Queensland, Brisbane, QLD 4006, Australia;
- Correspondence: (S.I.); (P.H.)
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Qiu L, Zheng L, Gan C, Deng W, Sun Y, Wang T. circBICD2 targets miR-149-5p/IGF2BP1 axis to regulate oral squamous cell carcinoma progression. J Oral Pathol Med 2021; 50:668-680. [PMID: 33382158 DOI: 10.1111/jop.13156] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 12/25/2020] [Accepted: 12/28/2020] [Indexed: 12/25/2022]
Abstract
BACKGROUND Circular RNAs (circRNAs) are related to oral squamous cell carcinoma (OSCC) progression. circRNA bicaudal D cargo adaptor 2 (circBICD2) has been reported to be abnormally expressed in OSCC. However, the function and mechanism of this circRNA in OSCC progression remain largely unknown. METHODS circBICD2, microRNA-149-5p (miR-149-5p), and insulin-like growth factor 2 mRNA-binding protein 1 (IGF2BP1) abundances were examined via quantitative reverse transcription polymerase chain reaction or Western blot. The function of circBICD2 was investigated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT), colony formation, flow cytometry, wound healing, transwell, specific kits, Western blot, and xenograft analyses. Dual-luciferase reporter analysis and RNA immunoprecipitation were carried out to analyze the binding interaction. RESULTS circBICD2 expression was enhanced in OSCC tissues and cells. circBICD2 silence suppressed OSCC cell proliferation, migration, invasion, and glutaminolysis and facilitated apoptosis. miR-149-5p was targeted via circBICD2 and decreased in OSCC tissues and cells. miR-149-5p knockdown attenuated silence of circBICD2 on the influence of OSCC cell proliferation, apoptosis, migration, invasion, and glutaminolysis. IGF2BP1 was targeted via miR-149-5p, and circBICD2 could regulate IGF2BP1 via miR-149-5p. IGF2BP1 interference constrained OSCC cell proliferation, migration, invasion, and glutaminolysis and promoted apoptosis. circBICD2 silence reduced OSCC cell growth in xenograft model. CONCLUSION circBICD2 knockdown repressed OSCC cell proliferation, migration, invasion, and glutaminolysis and increased apoptosis via modulating miR-149-5p/IGF2BP1 axis, which might act as a potential target for OSCC treatment.
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Affiliation(s)
- Lehong Qiu
- Department of Stomatology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Linlin Zheng
- Department of Central Laboratory, Affiliated Haikou Hospital of Xiangya Medical College, Central South University Haikou, Hainan, China
| | - Chengwen Gan
- Department of Stomatology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Wei Deng
- Department of Stomatology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Ying Sun
- Department of Stomatology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Tao Wang
- Department of Stomatology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
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Nedoluzhko A, Gruzdeva N, Sharko F, Rastorguev S, Zakharova N, Kostyuk G, Ushakov V. The Biomarker and Therapeutic Potential of Circular Rnas in Schizophrenia. Cells 2020; 9:E2238. [PMID: 33020462 PMCID: PMC7601372 DOI: 10.3390/cells9102238] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/29/2020] [Accepted: 10/01/2020] [Indexed: 12/14/2022] Open
Abstract
Circular RNAs (circRNAs) are endogenous, single-stranded, most frequently non-coding RNA (ncRNA) molecules that play a significant role in gene expression regulation. Circular RNAs can affect microRNA functionality, interact with RNA-binding proteins (RBPs), translate proteins by themselves, and directly or indirectly modulate gene expression during different cellular processes. The affected expression of circRNAs, as well as their targets, can trigger a cascade of events in the genetic regulatory network causing pathological conditions. Recent studies have shown that altered circular RNA expression patterns could be used as biomarkers in psychiatric diseases, including schizophrenia (SZ); moreover, circular RNAs together with other cell molecules could provide new insight into mechanisms of this disorder. In this review, we focus on the role of circular RNAs in the pathogenesis of SZ and analyze their biomarker and therapeutic potential in this disorder.
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Affiliation(s)
- Artem Nedoluzhko
- Faculty of Biosciences and Aquaculture, Nord University, PB 1490. 8049 Bodø, Norway
- Mental-Health Clinic No. 1 Named after N.A. Alexeev, Moscow Healthcare Department, Zagorodnoye Highway, 2, 115191 Moscow, Russia; (N.Z.); (G.K.); (V.U.)
| | - Natalia Gruzdeva
- National Research Center “Kurchatov Institute”, 1st Akademika Kurchatova Square, 123182 Moscow, Russia; (N.G.); (F.S.); (S.R.)
| | - Fedor Sharko
- National Research Center “Kurchatov Institute”, 1st Akademika Kurchatova Square, 123182 Moscow, Russia; (N.G.); (F.S.); (S.R.)
- Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky prospect 33/2, 119071 Moscow, Russia
| | - Sergey Rastorguev
- National Research Center “Kurchatov Institute”, 1st Akademika Kurchatova Square, 123182 Moscow, Russia; (N.G.); (F.S.); (S.R.)
| | - Natalia Zakharova
- Mental-Health Clinic No. 1 Named after N.A. Alexeev, Moscow Healthcare Department, Zagorodnoye Highway, 2, 115191 Moscow, Russia; (N.Z.); (G.K.); (V.U.)
| | - Georgy Kostyuk
- Mental-Health Clinic No. 1 Named after N.A. Alexeev, Moscow Healthcare Department, Zagorodnoye Highway, 2, 115191 Moscow, Russia; (N.Z.); (G.K.); (V.U.)
| | - Vadim Ushakov
- Mental-Health Clinic No. 1 Named after N.A. Alexeev, Moscow Healthcare Department, Zagorodnoye Highway, 2, 115191 Moscow, Russia; (N.Z.); (G.K.); (V.U.)
- Institute for Advanced Brain Studies, Lomonosov Moscow State University, Leninskiye Gory, 119899 Moscow, Russia
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Liu Y, Gu X, Liu H, Li Z, Wang Z, Zhu Z, Gao W, Wang J. New Insight of Circular RNAs in Human Musculoskeletal Diseases. DNA Cell Biol 2020; 39:1938-1947. [PMID: 32991198 DOI: 10.1089/dna.2020.5873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Circular RNAs (circRNAs), a novel group of noncoding RNAs, are present in most eukaryotic cells. Different from messenger RNAs, circRNAs have a covalently closed single-stranded stable structure and often act in cell type and tissue-specific manners, indicating that they can be used as biomarkers. With the advance of high-throughput RNA sequencing technology and bioinformatics, a large number of circRNAs have been identified in association with musculoskeletal diseases, but the functions of most circRNAs have not been clarified. circRNAs regulate biological processes by adsorbing microRNA as "sponges," binding to proteins, acting as transcriptional regulators, and participating in translation of proteins. In this study, we discuss the latest understanding of biogenesis and gene regulatory mechanisms of circRNAs with special emphasis on new targets for musculoskeletal disease diagnosis and clinical treatment.
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Affiliation(s)
- Yuzhe Liu
- Department of Orthopaedics of the Second Hospital, Jilin University, Changchun, China.,The Engineering Research Centre of Molecular Diagnosis and Cell Treatment for Metabolic Bone Diseases of Jilin Province, Jilin University, Changchun, China
| | - Xinming Gu
- Department of Oral Implantology of School and Hospital of Stomatology, and Jilin University, Changchun, China
| | - He Liu
- Department of Orthopaedics of the Second Hospital, Jilin University, Changchun, China.,The Engineering Research Centre of Molecular Diagnosis and Cell Treatment for Metabolic Bone Diseases of Jilin Province, Jilin University, Changchun, China
| | - Zhaoyan Li
- Department of Orthopaedics of the Second Hospital, Jilin University, Changchun, China.,The Engineering Research Centre of Molecular Diagnosis and Cell Treatment for Metabolic Bone Diseases of Jilin Province, Jilin University, Changchun, China.,Research Centre of the Second Hospital, Jilin University, Changchun, China
| | - Zhonghan Wang
- Department of Orthopaedics of the Second Hospital, Jilin University, Changchun, China.,The Engineering Research Centre of Molecular Diagnosis and Cell Treatment for Metabolic Bone Diseases of Jilin Province, Jilin University, Changchun, China
| | - Zhengqing Zhu
- Department of Orthopaedics of the Second Hospital, Jilin University, Changchun, China
| | - Weinan Gao
- Department of Orthopaedics of the Second Hospital, Jilin University, Changchun, China.,The Engineering Research Centre of Molecular Diagnosis and Cell Treatment for Metabolic Bone Diseases of Jilin Province, Jilin University, Changchun, China
| | - Jincheng Wang
- Department of Orthopaedics of the Second Hospital, Jilin University, Changchun, China.,The Engineering Research Centre of Molecular Diagnosis and Cell Treatment for Metabolic Bone Diseases of Jilin Province, Jilin University, Changchun, China
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Mao Y, Xu R. Circular RNA CDR1-AS contributes to pemetrexed and cisplatin chemoresistance through EGFR/PI3K signaling pathway in lung adenocarcinoma. Biomed Pharmacother 2019; 123:109771. [PMID: 31881486 DOI: 10.1016/j.biopha.2019.109771] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 11/30/2019] [Accepted: 12/04/2019] [Indexed: 12/24/2022] Open
Abstract
Recent studies found circRNAs were involved in tumorigenesis and became new tumor biomarkers and therapeutic targets in lung adenocarcinoma (LUAD), which played a critical role in various biological processes and had been implicated in resistance to chemotherapeutic drugs. However, the role of CDR1-AS in chemoresistance of LUAD to pemetrexed (PTX) and cisplatin (CDDP) is poorly understood. Here, we found that CDR1-AS was up-regulated in LUAD tissues and cell lines, its high-expression was relevant to smoking history, T stage and neoadjuvant chemotherapy (PTX and CDDP) of LUAD patients. CDR1-AS was an independent prognostic biomarker for LUAD patients. CDR1-AS was highly expressed in PTX and CDDP resistant LUAD tissues and cell line (A549/CR). Silence of CDR1-AS re-sensitized A549/CR cells to PTX and CDDP. CDR1-AS was closely related with EGFR/PI3K signaling pathway in A549/CR cells. The activating of EGFR/PI3K pathway mostly restored the effecting of CDR1-AS silence on PTX and CDDP sensitivity in A549/CR cells, CDR1-AS contributed to PTX and CDDP chemoresistance through EGFR/PI3K signaling pathway in LUAD. In conclusion, the CDR1-AS is high-expressed in LUAD and is an independent prognostic biomarker for LUAD patients. The high-expression of CDR1-AS is related with the PTX and CDDP insensitivity of LUAD patients, CDR1-AS promotes PTX and CDDP chemoresistance through EGFR/PI3K signaling pathway in LUAD.
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Affiliation(s)
- Yuqiang Mao
- Department of Thoracic Surgery, Shengjing Hospital, China Medical University, Shenyang, Liaoning, China
| | - Ran Xu
- Department of Thoracic Surgery, Shengjing Hospital, China Medical University, Shenyang, Liaoning, China.
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Circ-ZNF264 Promotes the Growth of Glioma Cells by Upregulating the Expression of miR-4493 Target Gene Apelin. J Mol Neurosci 2019; 69:75-82. [PMID: 31114952 DOI: 10.1007/s12031-019-01334-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 05/07/2019] [Indexed: 12/18/2022]
Abstract
Glioma is the most common malignant tumor in the brain and nervous system, with high recurrence and high mortality rate. Recent researches have shown that circular RNAs (circRNAs) play key roles in the genesis and progress of glioma. Detection of circRNAs in glioma cells revealed that the expression of circ-ZNF264 was upregulated. At the same time, the expression of miR-4493 was downregulated in glioma cells and had multiple binding sites on the circ-ZNF264 sequence. Dual luciferase reporter gene assay confirmed that miR-4493 could bind to circ-ZNF264 and apelin specifically. MiR-4493 expression was not changed, but its target gene apelin expression could be significantly upregulated by circ-ZNF264. MiR-4493 could inhibit the expression of circ-ZNF264 and apelin. Biological behaviors of glioma cells were detected; circ-ZNF264 promoted cell proliferation and invasion and inhibited apoptosis. MiR-4493 had the opposite effects and could terminate the above effects of circ-ZNF264. When the expression of apelin was downregulated and that of circ-ZNF264 was upregulated, the changes of the above biological behaviors were not obvious. Therefore, in glioma cells, circ-ZNF264 can inhibit the function of miR-4493 and then upregulate its target gene apelin expression, thus regulating glioma cell proliferation, apoptosis, and invasion. This finding provides more evidence for the role of circRNAs in glioma.
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