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Zhou H, Shen W, Zou H, Lv Q, Shao P. Circulating exosomal long non-coding RNA H19 as a potential novel diagnostic and prognostic biomarker for gastric cancer. J Int Med Res 2021; 48:300060520934297. [PMID: 32660285 PMCID: PMC7361491 DOI: 10.1177/0300060520934297] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Objective Long non-coding RNAs (lncRNAs) are involved in carcinogenesis and could be used as diagnostic biomarkers. Our study aimed to elucidate the clinical role of serum exosomal lncRNA H19 in gastric cancer (GC). Methods In this prospective clinical study, we determined serum exosomal lncRNA H19 levels in 81 patients with GC and analysed the correlations between serum lncRNA H19 levels and clinical characteristics. Receiver operating characteristics (ROC) curves were constructed to determine the diagnostic performance of exosomal lncRNA H19 in GC. Results Serum exosomal lncRNA H19 levels were significantly upregulated in patients with GC both before and after surgery compared with healthy controls. Furthermore, serum exosomal lncRNA H19 levels were significantly decreased after compared with before surgery in patients with GC. Preoperative lncRNA H19 levels were significantly correlated with TNM stage. The area under the ROC curve (AUC) value for exosomal lncRNA H19 was 0.849, which was significantly higher than the AUC values for cancer antigens 19-9 and 72-4 and carcinoembryonic antigen, either alone or combined. Conclusions These results suggest that circulating exosomal lncRNA H19 may be a potential biomarker with diagnostic and prognostic value in GC.
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Affiliation(s)
- Hui Zhou
- Department of Clinical Laboratory, The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Weifeng Shen
- Department of Clinical Laboratory, The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Hongxing Zou
- Department of Clinical Laboratory, The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Qingshan Lv
- Department of Clinical Laboratory, The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Pingyang Shao
- Department of Clinical Laboratory, The Affiliated Hospital of Jiaxing University, Jiaxing, China
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Lu Y, Cheng J, Cai W, Zhuo H, Wu G, Cai J. Inhibition of circRNA circVPS33B Reduces Warburg Effect and Tumor Growth Through Regulating the miR-873-5p/HNRNPK Axis in Infiltrative Gastric Cancer. Onco Targets Ther 2021; 14:3095-3108. [PMID: 34012268 PMCID: PMC8126971 DOI: 10.2147/ott.s292575] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 04/02/2021] [Indexed: 12/24/2022] Open
Abstract
Background Circular RNA VPS33B (circVPS33B) has been revealed to be upregulated in gastric cancer (GC) tissues. However, the role of circVPS33B in infiltrative GC is indistinct. Methods Expression of circVPS33B was detected using quantitative real-time polymerase chain reaction (qRT-PCR). The proliferation, migration, and invasion of infiltrative GC cells (XGC-1) were determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazoliumbromide (MTT), plate clone, wound-healing, or transwell assays. Protein levels were detected by Western blotting. Measurements of extracellular acidification rate (ECAR) and oxygen consumption rate (OCR) were executed using an XF96 extracellular flux analyzer. Glucose uptake and lactate production were analyzed by glycolysis assay. The regulatory mechanism of circVPS33B had been explored by bioinformatics analysis, dual-luciferase reporter assay, and/or RNA pull-down assay. In vivo tumorigenesis assay was executed to verify the oncogenicity of circVPS33B. Results CircVPS33B was upregulated in infiltrative GC tissues and cells. CircVPS33B silencing decreased tumor growth in vivo and inhibited proliferation, migration, invasion, EMT, and Warburg effect of infiltrative GC cells in vitro. Mechanically, circVPS33B regulated heterogeneous nuclear ribonucleoprotein K (HNRNPK) expression via sponging miR-873-5p. Furthermore, miR-873-5p inhibitor offset circVPS33B knockdown-mediated effects on malignant behaviors and Warburg effect of infiltrative GC cells. HNRNPK overexpression reversed the inhibitory impact of miR-873-5p mimic on malignant behaviors and Warburg effect of infiltrative GC cells. Conclusion CircVPS33B accelerated Warburg effect and tumor growth through regulating the miR-873-5p/HNRNPK axis in infiltrative GC, manifesting that circVPS33B might be a potential target for infiltrative GC treatment.
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Affiliation(s)
- Yizhuo Lu
- Department of General Surgery, Zhongshan Hospital Xiamen University, Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen, Fujian, 361004, People's Republic of China
| | - Jia Cheng
- Department of Gastrointestinal Surgery, Zhongshan Hospital Xiamen University, Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen, Fujian, 361004, People's Republic of China
| | - Wangyu Cai
- Department of Gastrointestinal Surgery, Zhongshan Hospital Xiamen University, Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen, Fujian, 361004, People's Republic of China
| | - Huiqin Zhuo
- Department of Gastrointestinal Surgery, Zhongshan Hospital Xiamen University, Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen, Fujian, 361004, People's Republic of China
| | - Guoyang Wu
- Department of General Surgery, Zhongshan Hospital Xiamen University, Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen, Fujian, 361004, People's Republic of China
| | - Jianchun Cai
- Department of Gastrointestinal Surgery, Zhongshan Hospital Xiamen University, Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen, Fujian, 361004, People's Republic of China
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53
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Fu Y, Sun H. Biogenesis, cellular effects, and biomarker value of circHIPK3. Cancer Cell Int 2021; 21:256. [PMID: 33975598 PMCID: PMC8111742 DOI: 10.1186/s12935-021-01956-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 04/27/2021] [Indexed: 12/12/2022] Open
Abstract
Competing endogenous RNAs (ceRNAs) can indirectly regulate gene expression by competitively binding to microRNA(miRNA) through miRNA response elements (MREs) to affect miRNA-induced gene regulation, which is of great biological significance. Among them, circular RNA (circRNA) has become a hotspot due to its highest binding capacity. A specific circRNA discussed in this review, circHIPK3, has been studied for its biological characteristics, function, cellular effects and its relationship with tumors and various diseases. Here, we review the recent researches about circHIPK3 in detail and aim to elucidate accurate conclusions from them. These circHIPK3-miRNAs-mRNA pathways will further advance the application of circHIPK3 in diseases development, early diagnosis and gene targeting therapy.
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Affiliation(s)
- Yihan Fu
- Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Shanghai, China
| | - Hong Sun
- Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China.
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54
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Cheng N, Jin C, Jin P, Zhu D, Hou Z. High glucose protects cardiomyocytes against ischaemia/reperfusion injury by suppressing myocardiocyte apoptosis via circHIPK3/miR-29b/AKT3 signalling. J Cell Mol Med 2021; 25:6137-6147. [PMID: 33951290 PMCID: PMC8406489 DOI: 10.1111/jcmm.16527] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 02/23/2021] [Accepted: 03/22/2021] [Indexed: 12/14/2022] Open
Abstract
High glucose promoted expression of AKT3, a direct target gene of miR-29b, by regulating circHIPK3 that functioned as ceRNA to sponge and down-regulate miR-29b. As a potential target gene of miR-29b, AKT3 plays a crucial role in the pathogenesis of myocardial ischaemia/reperfusion (I/R) injury, and this study aimed to investigate the potential role of high glucose in the outcome of I/R injury. qPCR and luciferase assay were carried out to investigate the relationship between the expression of circHIPK3, miR-29b and ATK3 mRNA. Immunohistochemistry and TUNEL were performed to analyse the relationship between AKT3 expression and apoptosis of myocardiocytes in vivo. No obvious difference in myocardial functions was observed between I/R and control rats under hyperglycaemia (HG) and normal glucose (NG) conditions, except that the infarct size/area at risk (IS/AR) ratio and the amount of h-FABP expression were different under HG and NG conditions. The expression of circHIPK3 and ATK3 was significantly elevated in the rats preconditioned by NG, whereas the expression of miR-29a was remarkably decreased. Meanwhile, the apoptosis of myocardial tissue was reduced in the rats preconditioned by NG. Luciferase assay confirmed that miR-29a played a repressive role in the expression of circHIPK3 and ATK3. And subsequent study indicated that the over-expressed AKT3 could rescue the increased cell apoptosis rate induced by the knockdown of circHIPK3. In this study, we demonstrated that high glucose protects cardiomyocytes against I/R associated injury by suppressing apoptosis and high glucose promoted the expression of AKT3 by regulating the expression of circHIPK3/miR-29b.
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Affiliation(s)
- Nan Cheng
- Department of Cardiovascular SurgeryChinese PLA General HospitalBeijingChina
| | - Chang Jin
- Medical Innovation Research DivisionResearch Center for Biomedical EngineeringChinese PLA General HospitalBeijingChina
| | - Ping Jin
- Department of Cardiovascular SurgeryThe First Affiliated Hospital of Air Force Military Medical UniversityXi'anChina
| | - Dan Zhu
- Department of ArrhythmiaQinghai Cardio‐Cerebrovascular HospitalXi'ningChina
| | - Zuoxu Hou
- Department of Thoracic Cardiovascular SurgeryGeneral Hospital of Central Theater Command of the People's Liberation ArmyWuhanChina
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Wang K, Fan Y, Sun J, Zhao L, Yu Y, Li G. Circ_0061140 stimulates the malignant development of prostate cancer by targeting miR-1193. Transl Androl Urol 2021; 10:1928-1938. [PMID: 34159074 PMCID: PMC8185672 DOI: 10.21037/tau-20-1477] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Background This study sought to explore the expression pattern in prostate cancer (PCa) tissues, as well as the regulatory effects of circ_0061140 on the proliferative potential of PCa cells. Methods A quantitative real-time polymerase chain reaction (qRT-PCR) analysis was undertaken to detect circ_0061140 levels in 43 paired PCa tissues and adjacent normal tissues. After the knockdown of circ_0061140, changes in the proliferative potential of PCa cells and tumor growth in nude mice with PCa were detected. Finally, the relationship of circ_0061140 and miR-1193 in the development of PCa was assessed. Results The results showed that circ_0061140 was upregulated in PCa tissues. PCa patients with higher Gleason score or larger sized tumors expressed higher levels of circ_0061140. Additionally, the knockdown of circ_0061140 inhibited the proliferative potential of PCa cells. MiR-1193 was the target gene binding circ_0061140, and its level was negatively regulated by circ_0061140. Finally, rescue experiments showed that miR-1193 was regulated by circ_0061140 in the development of PCa. Conclusions Circ_0061140 is upregulated in PCa tissues, and is closely linked to Gleason score and tumor size in PCa. Additionally, it causes PCa cells to proliferate by negatively regulating miR-1193.
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Affiliation(s)
- Kai Wang
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Department of Urology, Zhejiang Xiaoshan Hospital Affiliated to Hangzhou Normal University, Hangzhou, China
| | - Yi Fan
- Department of Urology, Zhejiang Xiaoshan Hospital Affiliated to Hangzhou Normal University, Hangzhou, China
| | - Ji Sun
- Department of Urology, Zhejiang Xiaoshan Hospital Affiliated to Hangzhou Normal University, Hangzhou, China
| | - Liwei Zhao
- Department of Urology, Zhejiang Xiaoshan Hospital Affiliated to Hangzhou Normal University, Hangzhou, China
| | - Yufu Yu
- Department of Urology, Zhejiang Xiaoshan Hospital Affiliated to Hangzhou Normal University, Hangzhou, China
| | - Gonghui Li
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Shao Q, Huang Y, Zhang C, Gao X, Gao S. Emerging landscape of circHIPK3 and its role in cancer and other diseases (Review). Mol Med Rep 2021; 23:409. [PMID: 33786629 PMCID: PMC8025471 DOI: 10.3892/mmr.2021.12048] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Accepted: 02/19/2021] [Indexed: 12/25/2022] Open
Abstract
Circular RNAs (circRNAs) are a special class of recently re‑discovered RNAs, which are covalently closed ring RNA molecules. circRNAs have been reported to possess multiple functions and are considered crucial regulators of several processes, and are therefore gaining increasing attention. In recent years, increasing evidence has shown that circRNAs are implicated in several crucial biological processes via regulation of gene expression, and their dysregulation is also associated with the development of numerous diseases, particularly acting as oncogenic or tumor‑suppressor molecules in cancer. Furthermore, circRNAs are involved in cell proliferation, differentiation, apoptosis, invasion and metastasis. In the present review, the biogenesis and functions of circRNAs are described, with a focus on the most recent research advances and the emerging roles of circular homeodomain‑interacting protein kinase 3 (circHIPK3) in human diseases. The present review may provide novel avenues for research on the roles of circHIPK3 as a clinical diagnostic and prognostic biomarker, as well as highlighting promising therapeutic targets for certain diseases and cancer.
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Affiliation(s)
- Qi Shao
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471023, P.R. China
| | - Yong Huang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471023, P.R. China
| | - Cai Zhang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471023, P.R. China
| | - Xiaochan Gao
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471023, P.R. China
| | - Shiyang Gao
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471023, P.R. China
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57
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Cheng Z, Liu G, Huang C, Zhao X. Upregulation of circRNA_100395 sponges miR-142-3p to inhibit gastric cancer progression by targeting the PI3K/AKT axis. Oncol Lett 2021; 21:419. [PMID: 33841580 PMCID: PMC8020390 DOI: 10.3892/ol.2021.12680] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 01/20/2021] [Indexed: 12/24/2022] Open
Abstract
Gastric cancer (GC) has a high morbidity and mortality, hence it is very important to elucidate the molecular pathogenesis mechanism of GC progression in order to find new treatment strategies. The present study aimed to explore the biological function of circular RNA_100395 (circRNA_100395) in GC. The expression level of circRNA_100395 in GC tissues, as well as normal epithelial cells and various gastric cancer cell lines, was detected using reverse transcription-quantitative PCR. Cell Counting Kit-8, EdU assay, flow cytometry and Transwell assays were performed to investigate cell proliferation, apoptosis, migration and invasion, respectively. A dual-luciferase reporter assay was performed to detect the correlation between circRNA_100395 and micro (mi)RNA-142-3p. Western blotting was performed to elucidate the potential regulatory mechanism. circRNA_100395 expression was found to be increased in GC tissues and cell lines. However, miR-142-3p expression was significantly reduced. Besides, low expression levels of circRNA_100395 were associated with poor tumor differentiation, advanced Tumor-Node-Metastasis stage, lymph node metastasis and shorter overall survival time. Moreover, overexpression of circRNA_100395 suppressed cell proliferation, increased the apoptosis rate and suppressed cell invasion and migration by inhibiting the PI3K/AKT signaling pathway. These findings also showed that miRNA-142-3p rescued the antitumor effects induced by circRNA_100395-overexpression. cirRNA_100395-overexpression had antitumor effects via regulating the miR-142-3p signaling pathway, which might be a promising treatment target for GC.
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Affiliation(s)
- Zhiyi Cheng
- Department of Gastrointestinal Surgery, Hospital Affiliated 5 to Nantong University, Taizhou People's Hospital, Taizhou, Jiangsu 225300, P.R. China
| | - Guiyuan Liu
- Department of Gastrointestinal Surgery, Hospital Affiliated 5 to Nantong University, Taizhou People's Hospital, Taizhou, Jiangsu 225300, P.R. China
| | - Chuanjiang Huang
- Department of Gastrointestinal Surgery, Hospital Affiliated 5 to Nantong University, Taizhou People's Hospital, Taizhou, Jiangsu 225300, P.R. China
| | - Xiaojun Zhao
- Department of Gastrointestinal Surgery, Hospital Affiliated 5 to Nantong University, Taizhou People's Hospital, Taizhou, Jiangsu 225300, P.R. China
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Xiong G, Zhang J, Zhang Y, Pang X, Wang B, Zhang Y. Circular RNA_0074027 participates in cell proliferation, apoptosis and metastasis of colorectal cancer cells through regulation of miR‑525‑3p. Mol Med Rep 2021; 23:324. [PMID: 33760126 PMCID: PMC7974509 DOI: 10.3892/mmr.2021.11963] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 01/21/2021] [Indexed: 12/25/2022] Open
Abstract
The present study aimed to elucidate the biological function of circular RNAs (circRNA) 0074027 in colorectal cancer (CRC). The expression of circRNA‑0074027 in CRC tissues and cells was determined by reverse transcription‑quantitative PCR. The in vitro experiments, including Cell Counting Kit‑8 (CCK‑8) assay, 5‑Ethynyl‑2'‑deoxyuridine assay, flow cytometry and Transwell assay, were applied to evaluate cell proliferation, apoptosis and metastasis ability respectively following downregulation of circRNA‑0074027. The correlation between circRNA‑0074027 and micro (mi)RNA‑525‑3p was determined via dual‑luciferase reporter assay. Finally, western blotting was used to explore the possible regulatory mechanism. CircRNA‑0074027 was upregulated in CRC tissues, while miR‑525‑3p expression was reduced. In addition, patients with CRC and circRNA‑0074027 overexpression were more likely to have low tumor differentiation, lymph node metastasis and advanced TMN stage. Deletion of circRNA‑0074027 could suppress cell proliferation and metastasis through up-regulating p53 expression and forbidding epithelial‑mesenchymal transition signaling pathway. The addition of miRNA‑525‑3p inhibitors could reverse the anti‑tumor effects induced by the deletion of circRNA‑0074027. The downregulation of cirRNA_0074027 inhibited tumor progression via sponging miR‑525‑3p, which could be a promising treatment bio‑marker for CRC.
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Affiliation(s)
- Gang Xiong
- Department of General Surgery, Dazhou Central Hospital, Dazhou, Sichuan 635000, P.R. China
| | - Jun Zhang
- Department of General Surgery, Dazhou Central Hospital, Dazhou, Sichuan 635000, P.R. China
| | - Yichao Zhang
- Department of General Surgery, Dazhou Central Hospital, Dazhou, Sichuan 635000, P.R. China
| | - Xiao Pang
- Department of General Surgery, Dazhou Central Hospital, Dazhou, Sichuan 635000, P.R. China
| | - Biao Wang
- Department of General Surgery, Dazhou Central Hospital, Dazhou, Sichuan 635000, P.R. China
| | - Yongchuan Zhang
- Department of General Surgery, Dazhou Central Hospital, Dazhou, Sichuan 635000, P.R. China
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Zhang X, Lu J, Zhang Q, Luo Q, Liu B. CircRNA RSF1 regulated ox-LDL induced vascular endothelial cells proliferation, apoptosis and inflammation through modulating miR-135b-5p/HDAC1 axis in atherosclerosis. Biol Res 2021; 54:11. [PMID: 33757583 PMCID: PMC7986494 DOI: 10.1186/s40659-021-00335-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 03/10/2021] [Indexed: 12/27/2022] Open
Abstract
Background Atherosclerosis (AS) is the most common type in cardiovascular disease. Due to its complex pathogenesis, the exact etiology of AS is unclear. circRNA has been shown to play an essential role in most diseases. However, the underlying mechanism of circRNA in AS has been not understood clearly. Methods Quantitative Real-Time PCR assay was used to detect the expression of circRSF1, miR-135b-5p and histone deacetylase 1 (HDAC1). Western blot was applied to the measure of protein expression of HDAC1, B-cell lymphoma-2 (Bcl-2), BCL2-associated X (Bax), cleaved-caspase-3, vascular cell adhesion molecule 1 (VCAM1), intercellular cell adhesion molecule-1 (ICAM1) and E-selectin. MTT assay and flow cytometry were used to detect cell proliferation and apoptosis, respectively. Dual luciferase reporter assay and RIP assay was used to determine the relationship among circRSF1, miR-135b-5p and HDAC1. Besides, an ELISA assay was performed to measure the levels of IL-1β, IL-6, TNF-α and IL-8. Results In this study, ox-LDL inhibited circRSF1 and HDAC1 expression while upregulated miR-135b-5p expression in Human umbilical vein endothelial cells (HUVECs). Importantly, ox-LDL could inhibit HUVECs growth. Moreover, promotion of circRSF1 or inhibition of miR-135b-5p induced cell proliferation while inhibited apoptosis and inflammation of ox-LDL-treated HUVECs, which was reversed by upregulating miR-135b-5p or downregulating HDCA1 in ox-LDL-treated HUVECs. More than that, we verified that circRSF1 directly targeted miR-135b-5p and HDAC1 was a target mRNA of miR-135b-5p in HUVECs. Conclusion CircRSF1 regulated ox-LDL-induced vascular endothelial cell proliferation, apoptosis and inflammation through modulating miR-135b-5p/HDAC1 axis in AS, providing new perspectives and methods for the treatment and diagnosis of AS.
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Affiliation(s)
- Xiaohao Zhang
- Department of Cardiology, The Second Hospital of Jilin University, No.218, Ziqiang Street, Nanguan District, Changchun, 130041, Jilin, China
| | - Junying Lu
- Department of Intensive Care Unit, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Qinghua Zhang
- Respiratory and Critical Illness Department, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Qiang Luo
- Department of Cardiology, The Second Hospital of Jilin University, No.218, Ziqiang Street, Nanguan District, Changchun, 130041, Jilin, China
| | - Bin Liu
- Department of Cardiology, The Second Hospital of Jilin University, No.218, Ziqiang Street, Nanguan District, Changchun, 130041, Jilin, China.
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Identify potential miRNA-mRNA regulatory networks contributing to high-risk neuroblastoma. Invest New Drugs 2021; 39:901-913. [PMID: 33666785 DOI: 10.1007/s10637-021-01064-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 01/06/2021] [Indexed: 10/22/2022]
Abstract
Neuroblastoma (NB) is a common tumor in children, usually in the retroperitoneum. After various treatments, low- and intermediate-risk patients have achieved good results, but the prognosis of high-risk patients is still very poor. Therefore, it is necessary to find new effective targets for the treatment of high-risk patients. In this study, comprehensive bioinformatics analysis was used to identify the differentially expressed genes (DEG and DEM) between high-risk patients and non-high-risk patients, and it was identified that ADRB2 may affect the survival status of high-risk patients due to miR -30a-5p regulation. The GSE49710, GSE73517, and GSE121513 datasets were downloaded from the Gene Expression Synthesis (GEO) database, and DEG and DEM were selected. Then, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses were applied to the selected DEGs. The STRING database and Cytoscape software were used to construct protein-protein interaction (PPI) networks and perform modular analysis of the DEGs. The TARGET data set containing information on overall survival days were used for the prognostic analysis of central genes. We identified a total of 255 DEGs from GSE49710 and GSE73517, and 193 DEMs from GSE121513. We identified the 5 most important central genes from the PPI network, performed a prognostic analysis in the target data set, and verified their expression using RT-qPCR to select the most important ADRB2 gene to predict miRNA. Integrating the differential miRNA predicted by miRDB and miRSystem and GSE121513 between the targeted miRNA and the prognosis, miR-30a-5p was finally identified as the targeted miRNA of ADRB2.
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CircRNAs: a new target for the diagnosis and treatment of digestive system neoplasms. Cell Death Dis 2021; 12:205. [PMID: 33627631 PMCID: PMC7904779 DOI: 10.1038/s41419-021-03495-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 01/27/2021] [Accepted: 02/01/2021] [Indexed: 02/06/2023]
Abstract
A circRNA is a type of endogenous noncoding RNA that consists of a closed circular RNA molecule formed by reverse splicing; these RNAs are widely distributed in a variety of biological cells. In contrast to linear RNAs, circRNAs have no 5′ cap or 3′ poly(A) tail. They have a stable structure, a high degree of conservation, and high stability, and they are richly and specifically expressed in certain tissues and developmental stages. CircRNAs play a very important role in the occurrence and progression of malignant tumors. According to their origins, circRNAs can be divided into four types: exon-derived circRNAs (ecRNAs), intron-derived circRNAs (ciRNAs), circRNAs containing both exons and introns (EIciRNAs) and intergenic circRNAs. A large number of studies have shown that circRNAs have a variety of biological functions, participate in the regulation of gene expression and play an important role in the occurrence and progression of tumors. In this paper, the structure and function of circRNAs are reviewed, along with their biological role in malignant tumors of the digestive tract, in order to provide a reference for the diagnosis and treatment of digestive system neoplasms.
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Zhou J, Wang B, Bin X, Xie C, Li B, Liu O, Tang Z. CircHIPK3: Key Player in Pathophysiology and Potential Diagnostic and Therapeutic Tool. Front Med (Lausanne) 2021; 8:615417. [PMID: 33693013 PMCID: PMC7937734 DOI: 10.3389/fmed.2021.615417] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 02/02/2021] [Indexed: 12/21/2022] Open
Abstract
A large number of studies in China and other countries have confirmed that circularHIPK3 (circHIPK3) plays an important role in the pathophysiological processes of various diseases. Through the action of sponge miRNA (miR), circHIPK3 regulates cell proliferation, differentiation, and migration, and plays a key role in disease processes. By referring to a large number of research reports, this article explores the specific functional role of circHIPK3 in fibrotic diseases, cancer, and other diseases. This review aims to clarify the role of circHIPK3 in disease processes in order to aid further studies into the specific pathogenesis and clinical diagnosis of various diseases and provide new ideas for treatments.
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Affiliation(s)
- Jiang Zhou
- Hunan Key Laboratory of Oral Health Research & Hunan 3D Printing Engineering Research Center of Oral Care & Hunan Clinical Research Center of Oral Major Diseases and Oral Health & Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, China
| | - Baisheng Wang
- Hunan Key Laboratory of Oral Health Research & Hunan 3D Printing Engineering Research Center of Oral Care & Hunan Clinical Research Center of Oral Major Diseases and Oral Health & Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, China
| | - Xin Bin
- Hunan Key Laboratory of Oral Health Research & Hunan 3D Printing Engineering Research Center of Oral Care & Hunan Clinical Research Center of Oral Major Diseases and Oral Health & Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, China
| | - Changqing Xie
- Hunan Key Laboratory of Oral Health Research & Hunan 3D Printing Engineering Research Center of Oral Care & Hunan Clinical Research Center of Oral Major Diseases and Oral Health & Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, China
| | - Bo Li
- Hunan Key Laboratory of Oral Health Research & Hunan 3D Printing Engineering Research Center of Oral Care & Hunan Clinical Research Center of Oral Major Diseases and Oral Health & Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, China
| | - Ousheng Liu
- Hunan Key Laboratory of Oral Health Research & Hunan 3D Printing Engineering Research Center of Oral Care & Hunan Clinical Research Center of Oral Major Diseases and Oral Health & Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, China
| | - Zhangui Tang
- Hunan Key Laboratory of Oral Health Research & Hunan 3D Printing Engineering Research Center of Oral Care & Hunan Clinical Research Center of Oral Major Diseases and Oral Health & Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, China
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Yang D, Hu Z, Zhang Y, Zhang X, Xu J, Fu H, Zhu Z, Feng D, Cai Q. CircHIPK3 Promotes the Tumorigenesis and Development of Gastric Cancer Through miR-637/AKT1 Pathway. Front Oncol 2021; 11:637761. [PMID: 33680975 PMCID: PMC7933501 DOI: 10.3389/fonc.2021.637761] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 01/04/2021] [Indexed: 12/24/2022] Open
Abstract
Circular RNA is a kind of RNA with a covalently closed loop, which has a complex ability to modulate genes in the process of tumorigenesis and metastasis. Nevertheless, how circular RNA functions in gastric cancer (GC) remains unclear. The effect of circHIPK3 in vitro was studied here. Quantitative real-time PCR (qRT-PCR) was employed to found that circHIPK3 markedly increased in GC tissues and cell lines. And low expression of circHIPK3 suppressed the GC cells growing and metabolizing. Then the bioinformatics tool predicted the downstream target of circHIPK3, and it was proved by the dual-luciferase report experiment. According to the results of bioinformatics analysis and experimental data, it was clarified that circHIPK3 acted as a sponge of miR-637, releasing its direct target AKT1. The dual-luciferase assay revealed that mir-637 could bind circHIPK3 and AKT1. qRT-PCR data indicated that overexpression circHIPK3 led to the low level of miR-637 and overexpressed miR-637 would reduce AKT1 level. Finally, we demonstrated that the low expression of miR-637 or overexpression of AKT1 could attenuate the anti-proliferative effects of si-circHIPK3. These results suggest that the circHIPK3/miR-637/AKT1 regulatory pathway may be associated with the oncogene and growth of gastric cancer. In short, a new circular RNA circHIPK3 and its function are identified, and the regulatory pathway of circHIPK3/miR-637/AKT1 in the tumorigenesis and development of gastric cancer is discovered.
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Affiliation(s)
- Dejun Yang
- Department of Gastrointestinal Surgery, Changzheng Hospital, Navy Medical University, Shanghai, China
| | - Zunqi Hu
- Department of Gastrointestinal Surgery, Changzheng Hospital, Navy Medical University, Shanghai, China
| | - Yu Zhang
- Department of Gastrointestinal Surgery, Changzheng Hospital, Navy Medical University, Shanghai, China
| | - Xin Zhang
- Department of Gastrointestinal Surgery, Changzheng Hospital, Navy Medical University, Shanghai, China
| | - Jiapeng Xu
- Department of Gastrointestinal Surgery, Changzheng Hospital, Navy Medical University, Shanghai, China
| | - Hongbing Fu
- Department of Gastrointestinal Surgery, Changzheng Hospital, Navy Medical University, Shanghai, China
| | - Zhenxin Zhu
- Department of Gastrointestinal Surgery, Changzheng Hospital, Navy Medical University, Shanghai, China
| | - Dan Feng
- Department of Oncology, Changhai Hospital, Navy Medical University, Shanghai, China
| | - Qingping Cai
- Department of Gastrointestinal Surgery, Changzheng Hospital, Navy Medical University, Shanghai, China
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64
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Liao W, He J, Disoma C, Hu Y, Li J, Chen G, Sheng Y, Cai X, Li C, Cheng K, Yang C, Qin Y, Han D, Wen W, Ding C, Li M. Hsa_circ_0107593 Suppresses the Progression of Cervical Cancer via Sponging hsa-miR-20a-5p/93-5p/106b-5p. Front Oncol 2021; 10:590627. [PMID: 33585208 PMCID: PMC7874083 DOI: 10.3389/fonc.2020.590627] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 11/25/2020] [Indexed: 12/29/2022] Open
Abstract
Circular RNAs (circRNAs) are a new class of single-stranded RNAs that form a continuous loop with crucial role in regulation of gene expression. Because their circular conformation conforms numerous properties, circRNAs have been investigated recently to demonstrate their important role in the development and progression of various cancers. However, the function of circRNAs and their regulatory outcomes in cervical cancer (CC) have rarely been explored. In this study, the role and molecular mechanism of hsa_circ_0107593 in cervical cancer are demonstrated. Quantitative polymerase chain reaction (qRT-PCR) was used to determine the expression of hsa_circ_0107593 and three miRNAs (hsa-miR-20a-5p, 93-5p, and 106b-5p) in paired CC tissues (tumor tissue vs. adjacent normal cervical tissue), CC cell lines, and human normal cervical epithelial immortalized cell line. A series of functional experiments were conducted to assess the function of hsa_circ_0107593 in CC development. The Receiver Operating Characteristic (ROC) curve was plotted to estimate the diagnostic value of hsa_circ_0107593 in CC. The dual-luciferase reporter assay was used to explore the interaction between hsa_circ_0107593 and hsa-miR-20a-5p/93-5p/106b-5p. Bioinformatic analysis was conducted to predict the target mRNAs, pathways, and functional enrichment. The results revealed that hsa_circ_0107593 has low expression in CC tissues and CC cell lines. Moreover, negative correlations of hsa_circ_0107593 expression were found against tumor diameter, FIGO stage, and myometrial invasion. Also, hsa_circ_0107593 impedes CC cell proliferation, migration, and invasion. Based on ROC curve analysis, hsa_circ_0107593 could serve as a diagnostic biomarker. Its low expression may indicate increased patient's risk to developing cervical cancer. Mechanistically, hsa_circ_0107593 serves as a sponge of hsa-miR-20a-5p, hsa-miR-93-5p, and hsa-miR-106b-5p. Collectively, our study implies that hsa_circ_0107593 has tumor-suppressing activity in CC by physically binding with hsa-miR-20a-5p, hsa-miR-93-5p, and hsa-miR-106b-5p.
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Affiliation(s)
- Wenyan Liao
- Reproductive Medical Center, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Department of Gynaecology and Obstetrics, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Jun He
- Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Cyrollah Disoma
- Department of Cell Biology, School of Life Sciences, Central South University, Changsha, China
| | - Yi Hu
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Junhua Li
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - Guodong Chen
- Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Ying Sheng
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Xinyu Cai
- Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Chuanfu Li
- Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Kai Cheng
- Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Chunfen Yang
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Yongxi Qin
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Dong Han
- Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Wu Wen
- Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Chengming Ding
- Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Mujun Li
- Reproductive Medical Center, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
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65
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Ning X, Sun L. Systematic Identification and Analysis of Circular RNAs of Japanese Flounder ( Paralichthys olivaceus) in Response to Vibrio anguillarum Infection. Genes (Basel) 2021; 12:genes12010100. [PMID: 33467444 PMCID: PMC7830906 DOI: 10.3390/genes12010100] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 01/08/2021] [Accepted: 01/13/2021] [Indexed: 12/15/2022] Open
Abstract
Circular RNA (circRNA) is a new class of non-coding RNA that is structured into a closed loop without polyadenylation. Recent studies showed that circRNAs are involved in the host immune response to pathogen infection. Japanese flounder (Paralichthys olivaceus), an important economical marine fish cultured in north Asia, is affected by Vibrio anguillarum, a pathogenic bacterium that can infect a large number of fish. In this study, we systematically explored the circRNAs in the spleen of V. anguillarum-infected flounder at different infection time points. A total of 6581 circRNAs were identified, 148 of which showed differential expression patterns after V. anguillarum infection and were named DEcirs. Most of the DEcirs were strongly time-specific. The parental genes of the DEcirs were identified and functionally classified into diverse pathways, including immune-related pathways. Among the immune-related DEcirs, seven were predicted to sponge 18 targeted miRNAs that were differentially expressed during V. anguillarum infection (named DETmiRs). Further analysis showed that the DEcirs and their corresponding DETmiRs intertwined into complicated immune related networks. These results indicate that in flounder, circRNAs are regulated by V. anguillarum and form interactive networks with mRNAs and miRNAs that likely play important roles in the immune defense against pathogen infection.
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Affiliation(s)
- Xianhui Ning
- CAS Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China;
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Li Sun
- CAS Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China;
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Correspondence: ; Tel.: +86-532-82898829
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66
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Wei H, Li L, Zhang H, Xu F, Chen L, Che G, Wang Y. Circ-FOXM1 knockdown suppresses non-small cell lung cancer development by regulating the miR-149-5p/ATG5 axis. Cell Cycle 2021; 20:166-178. [PMID: 33413028 DOI: 10.1080/15384101.2020.1867780] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Circular RNAs (circRNAs) have been reported to be related to the development of human cancers. However, the function of circ-FOXM1 in non-small cell lung cancer (NSCLC) was largely unknown. Here, we revealed the role and functional mechanism of circ-FOXM1 in NSCLC progression. The relative expression of circ-FOXM1, microRNA-149-5p (miR-149-5p), and autophagy-related 5 (ATG5) was determined by quantitative real-time polymerase chain reaction (RT-qPCR). Cell Counting Kit-8 (CCK-8), flow cytometry, and transwell assay were employed to assess cell viability, apoptosis, and migration, respectively. The relative protein expression was detected by western blot. Furthermore, mouse xenograft was carried out to analyze the effect of circ-FOXM1 on tumor growth in vivo. In addition, the interaction between miR-149-5p and circ-FOXM1 or ATG5 was predicted by Starbase3.0 and confirmed by the dual-luciferase reporter assay and RNA pull-down assay. Circ-FOXM1 and ATG5 levels were upregulated, while the miR-149-5p level was downregulated in NSCLC tissues and cells. Circ-FOXM1 knockdown suppressed NSCLC cell viability, migration, and autophagy, and induced cell apoptosis. Interestingly, circ-FOXM1 targeted miR-149-5p to upregulate the ATG5 level. Moreover, circ-FOXM1 exerted function through repressing miR-149-5p expression, and miR-149-5p exerted function via inhibiting ATG5 expression. Our results suggested that circ-FOXM1 knockdown attenuated the development of NSCLC through modulating the miR-149-5p/ATG5 axis, providing a theoretical basis for the therapy of NSCLC.
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Affiliation(s)
- Haitao Wei
- Department of Thoracic Surgery, West China Hospital, Sichuan University , Chengdu, Sichuan, China.,Department of Thoracic Surgery, Huaihe Hospital of Henan University , Kaifeng, Henan, China
| | - Li Li
- Department of Thoracic Surgery, West China Hospital, Sichuan University , Chengdu, Sichuan, China.,School of Nursing and Health, Henan University , Kaifeng, Henan, China
| | - Haifeng Zhang
- Department of Thoracic Surgery, Huaihe Hospital of Henan University , Kaifeng, Henan, China
| | - Feng Xu
- Department of Respiratory, Huaihe Hospital, Henan University , Kaifeng, Henan, China
| | - Longqi Chen
- Department of Thoracic Surgery, West China Hospital, Sichuan University , Chengdu, Sichuan, China
| | - Guowei Che
- Department of Thoracic Surgery, West China Hospital, Sichuan University , Chengdu, Sichuan, China
| | - Yun Wang
- Department of Thoracic Surgery, West China Hospital, Sichuan University , Chengdu, Sichuan, China
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67
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Li J, Fan R, Xiao H. Circ_ZFR contributes to the paclitaxel resistance and progression of non-small cell lung cancer by upregulating KPNA4 through sponging miR-195-5p. Cancer Cell Int 2021; 21:15. [PMID: 33407505 PMCID: PMC7788748 DOI: 10.1186/s12935-020-01702-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 12/04/2020] [Indexed: 12/14/2022] Open
Abstract
Background A growing body of evidence has demonstrated the vital roles of circular RNAs (circRNAs) in cancer progression and drug resistance. We intended to explore the roles and mechanisms of circ_ZFR in the paclitaxel (PTX) resistance and progression of non-small cell lung cancer (NSCLC). Methods Two NSCLC cell lines A549 and H460 were used in this study. Quantitative real-time polymerase chain reaction (qRT-PCR) assay was conducted to measure the levels of circ_ZFR, ZFR, miR-195-5p and karyopherin subunit alpha 4 (KPNA4) mRNA. RNase R assay was used to analyze the characteristic of circ_ZFR. MTT assay was carried out to assess PTX resistance and cell proliferation. Flow cytometry analysis was utilized to analyze cell cycle and apoptosis. Transwell assay was used to examine cell migration and invasion. Western blot assay was conducted to measure the protein levels of Ki67, Twist1, E-cadherin and KPNA4. Dual-luciferase reporter assay was adopted to verify the combination between miR-195-5p and circ_ZFR or KPNA4. Murine xenograft model assay was used to investigate the effect of circ_ZFR on PTX resistance of NSCLC in vivo. Results Circ_ZFR level was enhanced in PTX-resistant NSCLC tissues and cells. Knockdown of circ_ZFR suppressed PTX resistance, cell cycle process, proliferation, migration and invasion and induced apoptosis in PTX-resistant NSCLC cells. For mechanism analysis, circ_ZFR knockdown markedly downregulated the expression of KPNA4 by sponging miR-195-5p, thereby promoting PTX sensitivity and suppressing cell progression in PTX-resistant NSCLC cells. In addition, circ_ZFR silencing enhanced PTX sensitivity of NSCLC in vivo. Conclusion Circ_ZFR knockdown played a positive role in overcoming PTX resistance of NSCLC via regulating miR-195-5p/KPNA4 axis, which might provide a possible circRNA-targeted therapy for NSCLC.
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Affiliation(s)
- Junmin Li
- Department of Respiratory Medicine, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - Rongmei Fan
- Department of Respiratory Medicine, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - Hui Xiao
- Department of Critical Care Medicine, Taihe Hospital, Hubei University of Medicine, No. 32 Renmin South Road, Shiyan, 442000, Hubei, China.
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68
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Sarkar D, Diermeier SD. Circular RNAs: Potential Applications as Therapeutic Targets and Biomarkers in Breast Cancer. Noncoding RNA 2021; 7:2. [PMID: 33466455 PMCID: PMC7838774 DOI: 10.3390/ncrna7010002] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 12/26/2020] [Accepted: 12/31/2020] [Indexed: 12/24/2022] Open
Abstract
Circular RNAs (circRNAs) are a class of non-coding RNAs that form a covalently closed loop. A number of functions and mechanisms of action for circRNAs have been reported, including as miRNA sponge, exerting transcriptional and translational regulation, interacting with proteins, and coding for peptides. CircRNA dysregulation has also been implicated in many cancers, such as breast cancer. Their relatively high stability and presence in bodily fluids makes cancer-associated circRNAs promising candidates as a new biomarker. In this review, we summarize the research undertaken on circRNAs associated with breast cancer, discuss circRNAs as biomarkers, and present circRNA-based therapeutic approaches.
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Affiliation(s)
| | - Sarah D. Diermeier
- Department of Biochemistry, University of Otago, Dunedin 9016, New Zealand;
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69
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Ghafouri-Fard S, Shoorei H, Bahroudi Z, Abak A, Majidpoor J, Taheri M. An update on the role of miR-124 in the pathogenesis of human disorders. Biomed Pharmacother 2021; 135:111198. [PMID: 33412388 DOI: 10.1016/j.biopha.2020.111198] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 12/01/2020] [Accepted: 12/26/2020] [Indexed: 12/28/2022] Open
Abstract
MicroRNA-124 (miR-124) is a copious miRNA in the brain, but it is expressed in a wide range of human/animal tissues participating in the pathogenesis of several disorders. Based on its important function in the development of the nervous system, abnormal expression of miR-124 has been detected in nervous system diseases including Alzheimer's disease, Parkinson's disease, Hypoxic-Ischemic Encephalopathy, Huntington's disease, and ischemic stroke. In addition to these conditions, miR-124 contributes to the pathogenesis of cardiovascular disorders, hypertension, and atherosclerosis. Besides, it has been shown to be down-regulated in a wide range of human cancers such as colorectal cancer, breast cancer, gastric cancer, glioma, pancreatic cancer, and other types of cancer. Yet, few studies have reported upregulation of miR-124 in some cancer types. In the current study, we describe the role of miR-124 in these malignant and non-malignant conditions.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamed Shoorei
- Department of Anatomical Sciences, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Zahra Bahroudi
- Department of Anatomical Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Atefe Abak
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jamal Majidpoor
- Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Taheri
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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70
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Ran Y, Yin N, Huang D, Zhao Y, Yang J, Zhang H, Qi H. Identification and Characterization of Circular RNA as a Novel Regulator and Biomarker in Preterm Birth. Front Bioeng Biotechnol 2020; 8:566984. [PMID: 33392159 PMCID: PMC7775733 DOI: 10.3389/fbioe.2020.566984] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 11/13/2020] [Indexed: 12/12/2022] Open
Abstract
Preterm birth (PTB), as the leading cause of neonatal death, is a severe threat to maternal–fetal health. The diagnosis and treatment of PTB are difficult as its underlying mechanism still unknown. Circular RNA (circRNA) is an emerging molecule that plays an essential role in the pathological processes of various diseases. However, it is still unclear whether circRNAs are abnormal or involves in the PTB pathology. In this study, we analyzed RNA-seq data of peripheral blood from preterm and term pregnant women and verified with microarray data. There were 211 circRNA expression disorders in PTB, of which 68 increased and 143 decreased. Bioinformatics analysis revealed that the top 20 circRNAs competitively bind 68 miRNAs, thereby regulating 622 mRNAs mainly related to immunity, inflammation, and nerve activity, which may ultimately contribute to the occurrence of PTB. Moreover, 6 regulatory pairs, including hsa-MORC3_0001–hsa-miR-1248–CHRM2 were the core parts of this mechanism network, which might be therapeutic targets for PTB. Besides, ROC analysis indicated that hsa-ANKFY1_0025, hsa-FAM13B_0019, and hsa-NUSAP1_0010 (AUC = 0.7138, 0.9589, 1.000) have an excellent discrimination ability for PTB. Taken together, we explored for the first time the circRNA expression profile of PTB, and preliminarily analyzed its regulatory mechanism and predictive value for PTB, thus bringing new light to the diagnosis and treatment of PTB.
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Affiliation(s)
- Yuxin Ran
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing, China.,Joint International Research Laboratory of Reproduction and Development of Chinese Ministry of Education, Chongqing Medical University, Chongqing, China
| | - Nanlin Yin
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing, China.,Joint International Research Laboratory of Reproduction and Development of Chinese Ministry of Education, Chongqing Medical University, Chongqing, China.,Center for Reproductive Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Dongni Huang
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing, China.,Joint International Research Laboratory of Reproduction and Development of Chinese Ministry of Education, Chongqing Medical University, Chongqing, China
| | - Yangyu Zhao
- Department of Obstetrics & Gynecology, Peking University Third Hospital, Beijing, China
| | - Jing Yang
- Department of Obstetrics & Gynecology, Peking University Third Hospital, Beijing, China
| | - Hanwen Zhang
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing, China.,Joint International Research Laboratory of Reproduction and Development of Chinese Ministry of Education, Chongqing Medical University, Chongqing, China
| | - Hongbo Qi
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing, China.,Joint International Research Laboratory of Reproduction and Development of Chinese Ministry of Education, Chongqing Medical University, Chongqing, China.,Center for Reproductive Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Non-coding RNAs underlying chemoresistance in gastric cancer. Cell Oncol (Dordr) 2020; 43:961-988. [PMID: 32495294 DOI: 10.1007/s13402-020-00528-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 04/17/2020] [Accepted: 04/24/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Gastric cancer (GC) is a major health issue in the Western world. Current clinical imperatives for this disease include the identification of more effective biomarkers to detect GC at early stages and enhance the prevention and treatment of metastatic and chemoresistant GC. The advent of non-coding RNAs (ncRNAs), particularly microRNAs (miRNAs) and long-non coding RNAs (lncRNAs), has led to a better understanding of the mechanisms by which GC cells acquire features of therapy resistance. ncRNAs play critical roles in normal physiology, but their dysregulation has been detected in a variety of cancers, including GC. A subset of ncRNAs is GC-specific, implying their potential application as biomarkers and/or therapeutic targets. Hence, evaluating the specific functions of ncRNAs will help to expand novel treatment options for GC. CONCLUSIONS In this review, we summarize some of the well-known ncRNAs that play a role in the development and progression of GC. We also review the application of such ncRNAs in clinical diagnostics and trials as potential biomarkers. Obviously, a deeper understanding of the biology and function of ncRNAs underlying chemoresistance can broaden horizons toward the development of personalized therapy against GC.
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Xu X, Tao R, Sun L, Ji X. Exosome-transferred hsa_circ_0014235 promotes DDP chemoresistance and deteriorates the development of non-small cell lung cancer by mediating the miR-520a-5p/CDK4 pathway. Cancer Cell Int 2020; 20:552. [PMID: 33292236 PMCID: PMC7672955 DOI: 10.1186/s12935-020-01642-9] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 10/19/2020] [Accepted: 11/03/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Circular RNAs (circRNAs) play crucial roles in the development and progression of human cancers, including non-small cell lung cancer (NSCLC). However, most of these circRNAs, such as hsa_circ_0014235, are not fully identified in functions and mechanisms. METHODS The isolated exosomes from serum specimens were identified using transmission electron microscopy (TEM). The expression of hsa_circ_0014235, miR-520a-5p and cyclin-dependent kinase 4 (CDK4) was detected by real-time quantitative polymerase chain reaction (qPCR). For functional assays, cell proliferation, colony formation ability, migration, invasion, cell apoptosis and cell cycle progression were determined using cell counting kit-8 (CCK-8) assay, colony formation assay, wound healing assay, transwell assay and flow cytometry assay, respectively. The expression of CDK4 and other indicated marker proteins was detected by western blot. The predicted target relationship between miR-520a-5p and hsa_circ_0014235 or cyclin-dependent kinase 4 (CDK4) was verified by dual-luciferase reporter assay or RNA immunoprecipitation (RIP) assay. RESULTS The expression of hsa_circ_0014235 was notably elevated in NSCLC serum-derived exosomes, tumor tissues and cells. NSCLC serum-derived exosomes promoted NSCLC cell resistance to cisplatin (DDP), cell proliferation, migration and invasion in vitro, as well as tumor growth and DDP resistance in vivo. Hsa_circ_0014235 overexpression enhanced DDP resistance and facilitated cell malignant behaviors. MiR-520a-5p was a target of hsa_circ_0014235, and rescue experiments showed that miR-520a-5p restoration reversed the effects of hsa_circ_0014235 overexpression. Moreover, CDK4 was a target of miR-520a-5p, and rescue experiments showed that CDK4 knockdown reversed the aggressive effects of miR-520a-5p inhibition on NSCLC progression. CONCLUSIONS Exosome-transmitted hsa_circ_0014235 promoted NSCLC malignant development by mediating the miR-520a-5p/CDK4 regulatory axis.
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Affiliation(s)
- Xueliang Xu
- Department of Respirtory and Critical Care Medicine, Linyi People's Hospital, Linyi, Shandong, People's Republic of China
| | - Rong Tao
- Department of Respirtory and Critical Care Medicine, Linyi People's Hospital, Linyi, Shandong, People's Republic of China
| | - Liying Sun
- Department of Respirtory and Critical Care Medicine, Linyi People's Hospital, Linyi, Shandong, People's Republic of China
| | - Xia Ji
- Department of Respirtory and Critical Care Medicine, Linyi People's Hospital, Linyi, Shandong, People's Republic of China. .,Department of Respirtory and Critical Care Medicine, Intersection of Wuhan Road and Wohu Mountain, Linyi People's Hospital, Beicheng New District Hospital, Lanshan District, Linyi, Shandong , China.
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Peng L, Sang H, Wei S, Li Y, Jin D, Zhu X, Li X, Dang Y, Zhang G. circCUL2 regulates gastric cancer malignant transformation and cisplatin resistance by modulating autophagy activation via miR-142-3p/ROCK2. Mol Cancer 2020; 19:156. [PMID: 33153478 PMCID: PMC7643398 DOI: 10.1186/s12943-020-01270-x] [Citation(s) in RCA: 137] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 10/16/2020] [Indexed: 12/24/2022] Open
Abstract
Background Circular RNAs (circRNAs) are a class of noncoding RNAs (ncRNAs) and can modulate gene expression by binding to miRNAs; further, circRNAs have been shown to participate in several pathological processes. However, the expression and biological function of circCUL2 in gastric cancer (GC) remains largely unknown. Methods circRNA microarrays and quantitative real-time PCR (qRT-PCR) were used to identify differentially expressed circRNAs in GC tissues and cell lines. circCUL2 knockdown and overexpression were performed to indicate the functional role of circCUL2 in vitro and in vivo. The expression and regulation of circCUL2, miR-142-3p and ROCK2 were evaluated using fluorescence in situ hybridization (FISH), dual-luciferase assays, RNA pull-down assays, RNA immunoprecipitation (RIP) and rescue experiments. Furthermore, the regulation of cisplatin sensitivity and autophagy by circCUL2/miR-142-3p/ROCK2 was demonstrated by cellular apoptosis assays, western blot, immunofluorescence and transmission electron microscopy analyses. Results The level of circCUL2, which is stable and cytoplasmically localized, was significantly reduced in GC tissues and cells. Overexpressed circCUL2 inhibited malignant transformation in vitro and tumorigenicity in vivo. In the AGS and SGC-7901 cell lines, circCUL2 sponged miR-142-3p to regulate ROCK2, thus modulating tumor progression. Furthermore, in the AGS/DDP and SGC-7901/DDP cell lines, circCUL2 regulated cisplatin sensitivity through miR-142-3p/ROCK2-mediated autophagy activation. Conclusion circCUL2 may function as a tumor suppressor and regulator of cisplatin sensitivity through miR-142-3p/ROCK2-mediated autophagy activation, which could be a key mechanism and therapeutic target for GC. Supplementary information Supplementary information accompanies this paper at 10.1186/s12943-020-01270-x.
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Affiliation(s)
- Lei Peng
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Huaiming Sang
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Shuchun Wei
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yuanyuan Li
- Department of endocrinology, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Duochen Jin
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xudong Zhu
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xuan Li
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yini Dang
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Guoxin Zhang
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
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74
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Zhang Y, Liu Q, Liao Q. CircHIPK3: a promising cancer-related circular RNA. Am J Transl Res 2020; 12:6694-6704. [PMID: 33194066 PMCID: PMC7653572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 10/08/2020] [Indexed: 06/11/2023]
Abstract
Circular RNA (circRNA) is a special type of endogenous noncoding RNAs (ncRNAs), and are characterized by a covalently closed loop structure without a 5' cap and poly-adenylated tails. Abnormal expression of circRNAs has been implicated in a wide range of human cancers, where they function as either tumor suppressor genes or oncogenes. CircHIPK3, circRNA homeodomain-interacting protein kinase 3, is associated with human cancers such as lung cancer, bladder cancer, hepatocellular carcinoma, colorectal cancer, osteosarcoma, glioma and prostate cancer, et al. Numerous studies have indicated that circHIPK3 functions as a miRNA sponge to regulate the target genes and exert specific biological effects, including regulation of cell proliferation, invasion, and migration. Furthermore, circHIPK3 is thought to be a novel diagnostic biomarker, therapeutic target, and prognostic biomarker in different cancer types. Here, we reviewed the recent progress of the mechanism and functions of circHIPK3 during the evolution of malignancies.
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Affiliation(s)
- Yalu Zhang
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College Beijing 100730, China
| | - Qiaofei Liu
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College Beijing 100730, China
| | - Quan Liao
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College Beijing 100730, China
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75
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Liu J, Feng G, Li Z, Li R, Xia P. Knockdown of CircCRIM1 Inhibits HDAC4 to Impede Osteosarcoma Proliferation, Migration, and Invasion and Facilitate Autophagy by Targeting miR-432-5p. Cancer Manag Res 2020; 12:10199-10210. [PMID: 33116874 PMCID: PMC7573324 DOI: 10.2147/cmar.s253130] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 09/08/2020] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Circular RNAs (circRNAs) serve for a genre of considerable modulatory molecules that have been largely researched in human cancers. However, the contribution of circRNA cysteine-rich transmembrane bone morphogenetic protein regulator 1 (circCRIM1) to osteosarcoma (OS) is completely unclear. METHODS All the RNA levels were examined via quantitative real-time polymerase chain reaction (qRT-PCR). Cellular proliferation and migration/invasion were, respectively, analyzed using 3-(4, 5-dimethylthiazol-2-y1)-2, 5-diphenyl tetrazolium bromide (MTT) assay and transwell assay. The determination of all protein expression was administrated by Western blot. Dual-luciferase reporter assay was used for proving the target combination. The exploration of circCRIM1 in vivo was performed by xenograft assay. RESULTS In OS tissues and cells, circCRIM1 was differentially up-regulated. Functionally, cell proliferation, migration and invasion were suppressed while autophagy was promoted after circCRIM1 was down-regulated in OS cells. Mechanistically, mircoRNA-432-5p (miR-432-5p) was a miRNA target of circCRIM1 and the inhibitory effect of circCRIM1 knockdown on OS progression was achieved by targeting miR-432-5p. Moreover, histone deacetylase 4 (HDAC4) was a downstream gene of miR-432-5p and circCRIM1 targeted miR-432-5p to up-regulate HDAC4 level. MiR-432-5p inhibited proliferation, migration, and invasion but enhanced autophagy of OS cells through down-regulating HDAC4. In vivo, knockdown of circCRIM1 decreased OS growth via acting on the miR-432-5p/HDAC4 axis. CONCLUSION Our findings elucidated the oncogenic function of circCRIM1 in OS via the regulation of the miR-432-5p/HDAC4 axis, affording a novel view about how circRNA participated in OS development.
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Affiliation(s)
- Jun Liu
- Department of Hand Surgery, The Second Hospital of Jilin University, Changchun, Jilin130000, People’s Republic of China
| | - Guang Feng
- The Fourth Medical Center of PLA General Hospital, Beijing100048, People’s Republic of China
| | - Zhengwei Li
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin130000, People’s Republic of China
| | - Rui Li
- Department of Hand Surgery, The Second Hospital of Jilin University, Changchun, Jilin130000, People’s Republic of China
| | - Peng Xia
- Department of Hand Surgery, The Second Hospital of Jilin University, Changchun, Jilin130000, People’s Republic of China
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76
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Li X, Ma F, Wu L, Zhang X, Tian J, Li J, Cao J, Ma Y, Zhang L, Wang L. Identification of Hsa_circ_0104824 as a Potential Biomarkers for Breast Cancer. Technol Cancer Res Treat 2020; 19:1533033820960745. [PMID: 33043809 PMCID: PMC7556178 DOI: 10.1177/1533033820960745] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background: To study the specific expression of circular RNA (circRNA) in breast cancer and adjacent normal tissues to identify differentially expressed circRNA in breast cancer patients. To study the correlation between circRNA and clinical data of breast cancer, and to evaluate its potential as a breast cancer biomarker. Methods: The differential expression of circRNAs between the breast cancer tissues and adjacent normal tissues was screened by Human CircRNA Microarray. Candidate circRNAs verified by qRT-PCR. CircRNA was analyzed by Agilent GeneSpring 13.0 software. SPSS23.0, GraphPad Prism, and Sigmaplot software were used for statistical analysis. Perform T test, one-way ANOVA, curve regression analysis and ROC curve analysis for evaluating the diagnostic value of circular RNA. Results: Among the 2021 differentially expressed circRNAs, 546 were up-regulated and 1475 were down-regulated in breast cancer tissues. The validation study demonstrated that six circRNAs were downregulated. Among them, hsa_circ_0104824 proved high correlation between breast cancer tissues and plasma samples in its expression and diagnostic value. Conclusion: Hsa_circ_0104824 may serve as a promising predictive biomarker and therapeutic target for patients with breast cancer.
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Affiliation(s)
- Xiaohan Li
- 105002The Clinical Medical School of Ningxia Medical University, Yinchuan, China.,105002The General Hospital of Ningxia Medical University, Yinchuan, China
| | - Fang Ma
- 105002The Clinical Medical School of Ningxia Medical University, Yinchuan, China.,105002The General Hospital of Ningxia Medical University, Yinchuan, China
| | - Ligang Wu
- 105002The General Hospital of Ningxia Medical University, Yinchuan, China
| | - Xu Zhang
- 105002The General Hospital of Ningxia Medical University, Yinchuan, China
| | - Jinhai Tian
- 105002The General Hospital of Ningxia Medical University, Yinchuan, China
| | - Jinping Li
- 105002The General Hospital of Ningxia Medical University, Yinchuan, China
| | - Jia Cao
- 105002The General Hospital of Ningxia Medical University, Yinchuan, China
| | - Yunfei Ma
- 105002The Clinical Medical School of Ningxia Medical University, Yinchuan, China.,105002The General Hospital of Ningxia Medical University, Yinchuan, China
| | - Liang Zhang
- 105002The General Hospital of Ningxia Medical University, Yinchuan, China
| | - Libin Wang
- 105002The General Hospital of Ningxia Medical University, Yinchuan, China
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Zhao X, Wang Y, Yu Q, Yu P, Zheng Q, Yang X, Gao D. Circular RNAs in gastrointestinal cancer: Current knowledge, biomarkers and targeted therapy (Review). Int J Mol Med 2020; 46:1611-1632. [PMID: 33000182 PMCID: PMC7521476 DOI: 10.3892/ijmm.2020.4731] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 09/01/2020] [Indexed: 01/17/2023] Open
Abstract
Circular RNAs (circRNAs) are a type of endogenous non‑coding RNAs that are connected at the 3' and 5' ends by exon or intron cyclization, which forms a covalently closed loop. They are stable, well conserved, exhibit specific expression in mammalian cells and can function as microRNA (miRNA or miR) sponges to regulate the target genes of miRNAs, which influences biological processes. Such as tumor proliferation, invasion, metastasis, apoptosis and tumor stage. circRNAs represent promising candidates for clinical diagnosis and treatment. In the present review, the biogenesis, classification and functions of circRNAs in tumors are briefly summarized and discussed. In addition, the participation of circRNAs in signal transduction pathways regulating gastrointestinal cancer cellular functions is highlighted.
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Affiliation(s)
- Xiaorui Zhao
- Department of Pathogen Biology and Immunology, Medical College of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Yue Wang
- Department of Pathogen Biology and Immunology, Medical College of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Qiongfang Yu
- Department of Gastroenterology and Hepatology, Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Pei Yu
- Department of Pathogen Biology and Immunology, Medical College of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Qiaoyu Zheng
- Department of Pathogen Biology and Immunology, Medical College of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Xue Yang
- Department of Pathogen Biology and Immunology, Medical College of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Dian Gao
- Department of Pathogen Biology and Immunology, Medical College of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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78
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Li M, Hua Q, Shao Y, Zeng H, Liu Y, Diao Q, Zhang H, Qiu M, Zhu J, Li X, Ling Y, Zhang R, Jiang Y. Circular RNA circBbs9 promotes PM 2.5-induced lung inflammation in mice via NLRP3 inflammasome activation. ENVIRONMENT INTERNATIONAL 2020; 143:105976. [PMID: 32707273 DOI: 10.1016/j.envint.2020.105976] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 06/16/2020] [Accepted: 07/10/2020] [Indexed: 05/05/2023]
Abstract
Fine particulate matter (PM2.5) is one of the most important components of environmental pollutants, and is associated with pulmonary injury. However, the biological mechanisms of pulmonary damage caused by PM2.5 are poorly defined, especially the molecular pathways related to inflammation. Following system exposure to PM2.5 for 3 months in normal mice and in chronic obstructive pulmonary disease (COPD) model mice, it was found that PM2.5 exposure increased the expression of IL-1β and IL-18 in lung tissues via NLRP3 activation, and these effects were more intense in COPD model mice. Circular RNA (circRNA) sequencing showed that the expression profiles of circRNAs were changed after PM2.5 exposure, and the positive roles of circBbs9 in inflammation induced by PM2.5 were verified. The circBbs9 knockdown alleviated PM2.5-induced inflammation via NLRP3 inflammasome inactivation, as well as IL-1β and IL-18 inhibition in RAW264.7 cells, while overexpression of circBbs9 had the opposite effect. Bioinformatics and luciferase reporter assays showed that circBbs9 bound to microRNA-30e-5p (miR-30e-5p) and co-regulated the expression of Adar, a downstream target gene of miR-30e-5p. Taken together, these results revealed that PM2.5 induced pulmonary inflammation through NLRP3 inflammasome activation regulated by the circBbs9-miR-30e-5p-Adar pathway. Our findings provide a new target, circBbs9, for the assessment of lung inflammation and COPD exacerbation induced by PM2.5 exposure.
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Affiliation(s)
- Meizhen Li
- State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China; Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Qiuhan Hua
- State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China; Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Yueting Shao
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Huixian Zeng
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Yufei Liu
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Qinqin Diao
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Han Zhang
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Miaoyun Qiu
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Jialu Zhu
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Xun Li
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Yihui Ling
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Rong Zhang
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang 050017, China
| | - Yiguo Jiang
- State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China; Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China.
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Circular RNA circ-PVT1 contributes to paclitaxel resistance of gastric cancer cells through the regulation of ZEB1 expression by sponging miR-124-3p. Biosci Rep 2020; 39:221384. [PMID: 31793989 PMCID: PMC6928529 DOI: 10.1042/bsr20193045] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 11/22/2019] [Accepted: 11/28/2019] [Indexed: 02/07/2023] Open
Abstract
Gastric cancer (GC) is the fifth most commonly diagnosed malignancy. Paclitaxel (PTX) is an effective first-line chemotherapy drug in GC treatment, but the resistance of PTX attenuates the therapeutic effect. Circular RNA circ-PVT1 can exert the oncogenic effect in GC. But the function of circ-PVT1 involved in PTX resistance of GC is still unknown. In the present study, the expression levels of circ-PVT1, miR-124-3p and ZEB1 in PTX-resistant GC tissues and cells were detected by quantitative real-time polymerase chain reaction (RT-qPCR). PTX resistance in PTX-resistant cells was assessed by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) assay. The protein levels of Zinc finger E-box binding homeobox 1 (ZEB1), P-glycoprotein (P-gp) and glutathione S-transferase (GST-π) were detected by Western blot assay. Cell apoptosis and invasion were measured in PTX-resistant cells by flow cytometry and transwell invasion assays, severally. The interaction between miR-124-3p and circ-PVT1 or ZEB1 was predicted by starBase software, and then verified by the dual-luciferase reporter assay. The role of circ-PVT1 in PTX resistance of GC in vivo was measured by xenograft tumor model. Our results showed that circ-PVT1 expression was up-regulated in PTX-resistant GC tissues and cells. Circ-PVT1 down-regulation enhanced PTX sensitivity in PTX-resistant GC cells by negatively regulating miR-124-3p. ZEB1 served as a direct target of miR-124-3p. Circ-PVT1 enhanced ZEB1 expression by sponging miR-124-3p. Circ-PVT1 knockdown increased PTX sensitivity of GC in vivo. Taken together, our studies disclosed that circ-PVT1 facilitated PTX resistance by up-regulating ZEB1 mediated via miR-124-3p, suggesting an underlying therapeutic strategy for GC.
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80
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circHIPK3 Acts as Competing Endogenous RNA and Promotes Non-Small-Cell Lung Cancer Progression through the miR-107/BDNF Signaling Pathway. BIOMED RESEARCH INTERNATIONAL 2020; 2020:6075902. [PMID: 33015172 PMCID: PMC7512038 DOI: 10.1155/2020/6075902] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 08/21/2020] [Indexed: 01/07/2023]
Abstract
Circular RNAs (circRNAs) act as a crucial part in many human diseases, particularly in cancers. circRNA HIPK3 (circHIPK3) is a special circRNA that may participate in the oncogenesis of non-small-cell lung cancer (NSCLC), even though its latent regulatory mechanism is not very clear. Here, we studied the roles of circHIPK3 in NSCLC. qRT-PCR assay was applied to study the expression of circHIPK3 in NSCLC. The influence of circHIPK3 on NSCLC was estimated by silencing circHIPK3 and miR-107 mock transfection and brain-derived neurotrophic factor (BDNF) overexpression, and the correlation between circHIPK3, miR-107, and BDNF was evaluated by dual-luciferase reporter assay. The results showed that circHIPK3 expression was upregulated in NSCLC cells. circHIPK3 knockdown inhibited the migration and proliferation of NSCLC cells by promoting the expression of miR-107. circHIPK3 could be used as a miR-107 sponge to promote BDNF cell proliferation. The dual-luciferase reporter assay proved that miR-107 was the target of circHIPK3, and miR-107 had an interaction with the 3′untranslated region of BDNF. miR-107 overexpression inhibited BDNF-mediated NSCLC cell proliferation. These results indicate that circHIPK3 promotes tumor progression through a new circHIPK3/miR-107/BDNF axis, which offers potential markers and medical treatment for NSCLC.
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81
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Bi R, Wei W, Lu Y, Hu F, Yang X, Zhong Y, Meng L, Wang M, Jiang L, Xie X. High hsa_circ_0020123 expression indicates poor progression to non-small cell lung cancer by regulating the miR-495/HOXC9 axis. Aging (Albany NY) 2020; 12:17343-17352. [PMID: 32927434 PMCID: PMC7521531 DOI: 10.18632/aging.103722] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 06/28/2020] [Indexed: 01/24/2023]
Abstract
Circular RNAs (circRNAs) belong to non-protein-coding RNAs that regulate different pathophysiological procedures. Upregulation of hsa_circ_0020123 is found in non-small cell lung cancer (NSCLC); however, its activity and functions are not clear. In this study, the results showed that hsa_circ_0020123 expression increased in both tumor tissues and NSCLC cells. A higher hsa_circ_0020123 expression also led to poor prognoses among NSCLC patients assayed via FISH. The data of FISH also confirmed that hsa_circ_0020123 primarily had a cytoplasmic location. Hsa_circ_0020123 knockdown caused a significant decrease in nude mouse xenograft growth. Bioinformatics analyses and dual luciferase reporter assays confirmed that hsa_circ_0020123 was an miR-495 sponge and that the HOXC9 gene was a miR-495 target. The miR-495 downregulation reversed cell migration and proliferation inhibition induced by hsa_circ_0020123 silencing in vitro. HOXC9 overexpression reversed miR-495-induced inhibition of cell migration and proliferation. The dual luciferase reporter assay demonstrated that hsa_circ_0020123 interacted with miR-495 by binding to the HOXC9 3'-UTR to suppresses post-transcriptional HOXC9 expression. Taken together, our study found that hsa_circ_0020123 functioned like a tumor promoter via a novel hsa_circ_0020123/miR-495/HOXC9 axis, highlighting its possibility as a new NSCLC therapeutic target.
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Affiliation(s)
- Rui Bi
- Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Wei Wei
- Department of Cardiothoracic Surgery, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China
| | - Yunhui Lu
- Department of Nephrology, Changzheng Hospital, Shanghai 200003, China
| | - Fengqing Hu
- Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Xuhui Yang
- Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Yuan Zhong
- Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Lifei Meng
- Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Mingsong Wang
- Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Lianyong Jiang
- Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Xiao Xie
- Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
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Xu T, Wang M, Jiang L, Ma L, Wan L, Chen Q, Wei C, Wang Z. CircRNAs in anticancer drug resistance: recent advances and future potential. Mol Cancer 2020; 19:127. [PMID: 32799866 PMCID: PMC7429705 DOI: 10.1186/s12943-020-01240-3] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 07/31/2020] [Indexed: 12/13/2022] Open
Abstract
CircRNAs are a novel class of RNA molecules with a unique closed continuous loop structure. CircRNAs are abundant in eukaryotic cells, have unique stability and tissue specificity, and can play a biological regulatory role at various levels, such as transcriptional and posttranscriptional levels. Numerous studies have indicated that circRNAs serve a crucial purpose in cancer biology. CircRNAs regulate tumor behavioral phenotypes such as proliferation and migration through various molecular mechanisms, such as miRNA sponging, transcriptional regulation, and protein interaction. Recently, several reports have demonstrated that they are also deeply involved in resistance to anticancer drugs, from traditional chemotherapeutic drugs to targeted and immunotherapeutic drugs. This review is the first to summarize the latest research on circRNAs in anticancer drug resistance based on drug classification and to discuss their potential clinical applications.
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Affiliation(s)
- Tianwei Xu
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Jiangjiayuan road 121#, Nanjing, 210011, Jiangsu, P.R. China
| | - Mengwei Wang
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Jiangjiayuan road 121#, Nanjing, 210011, Jiangsu, P.R. China
| | - Lihua Jiang
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Jiangjiayuan road 121#, Nanjing, 210011, Jiangsu, P.R. China
| | - Li Ma
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Jiangjiayuan road 121#, Nanjing, 210011, Jiangsu, P.R. China
| | - Li Wan
- Department of Oncology, The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an, 223300, Jiangsu, China
| | - Qinnan Chen
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Jiangjiayuan road 121#, Nanjing, 210011, Jiangsu, P.R. China
| | - Chenchen Wei
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Jiangjiayuan road 121#, Nanjing, 210011, Jiangsu, P.R. China.
| | - Zhaoxia Wang
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Jiangjiayuan road 121#, Nanjing, 210011, Jiangsu, P.R. China.
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83
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Xiang D, Li Y, Lin Y. Circular RNA circCCDC66 Contributes to Malignant Phenotype of Osteosarcoma by Sponging miR-338-3p to Upregulate the Expression of PTP1B. BIOMED RESEARCH INTERNATIONAL 2020; 2020:4637109. [PMID: 32851074 PMCID: PMC7439191 DOI: 10.1155/2020/4637109] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 07/21/2020] [Indexed: 12/31/2022]
Abstract
In recent years, the mechanism of cancer research has become hotspots of life science and medicine, especially due to the rapid development of molecular medicine and bioinformatics research. Similarly, the molecular mechanism also has received increasing attention in osteosarcoma (OS) research. Also, a considerable amount of research confirmed that circular RNAs (circRNAs) could regulate cancer cell growth and metastasis. This study aimed to explore the effect of a circRNA, circCCDC66, on OS and reveal its potential molecular mechanism. High circCCDC66 expression level was found in OS patient-derived tissue samples and OS cell lines by qRT-PCR. The abilities cell proliferation and metastatic of U2OS and SW1353 cells were then assessed by Cell Counting Kit-8 and transwell assay, respectively. The interaction between circCCDC66 and its target miRNAs were verified by the dual-luciferase reporter assay. Through functional experiments, we found that circCCDC66 knockdown promoted the inhibition of cell proliferation and metastatic of OS cell lines. From mechanistic perspective, circCCDC66 upregulated PTP1B by sponging miR-338-3p. Collectively, our findings demonstrated that circCCDC66 contributed to malignant behaviors of OS cells by miR-338-3p/PTP1B pathway, which suggested circCCDC66/miR-338-3p/PTP1B axis might be a potential therapeutic target.
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Affiliation(s)
- Deng Xiang
- Department of Orthopaedics, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, China
| | - Yugang Li
- Department of Orthopaedics, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, China
| | - Yanshui Lin
- Department of Orthopaedics, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, China
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Chen ZG, Zhao HJ, Lin L, Liu JB, Bai JZ, Wang GS. Circular RNA CirCHIPK3 promotes cell proliferation and invasion of breast cancer by sponging miR-193a/HMGB1/PI3K/AKT axis. Thorac Cancer 2020; 11:2660-2671. [PMID: 32767499 PMCID: PMC7471055 DOI: 10.1111/1759-7714.13603] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 07/15/2020] [Accepted: 07/15/2020] [Indexed: 12/19/2022] Open
Abstract
Background The aim of this study was to explore the potential mechanism of circular RNA (circRNA) CirCHIPK3 on the malignant proliferation and metastasis of breast cancer (BC). Methods Human BC samples and their matched normal adjacent tissues were obtained from 50 patients to assess the expression of CirCHIPK3 and its relationship with BC prognosis. A series of in vitro and in vivo functional experiments were carried out to elucidate the role of CirCHIPK3 in BC progression and its underlying molecular mechanisms. Moreover, the interaction of CirCHIPK3, miR‐193a, and HMGB1 was examined using bioinformatics, FISH, RIP, RNA‐pull down and luciferase reporter assays. Western blot analysis was performed to examine the expression of HMGB1, p‐PI3K, total PI3K, p‐AKT, and AKT after si‐CirCHIPK3 transfection. Results Upregulation of CirCHIPK3 was identified in BC, which predicted a worse prognosis in BC patients. Furthermore, it was found that CirCHIPK3 facilitated cell proliferation, migration, and invasion in BC by regulating miR‐193a/HMGB1/PI3K/AKT signaling. CirCHIPK3 acted as a sponge for miR‐193a to facilitate HMGB1 expression. si‐CirCHIPK3 also inhibited tumor growth of BC in nude mice. si‐CircCHIPK3 decreased HMGB1/PI3K/AKT signal expression in MDA‐MB‐231 cells, whereas overexpression of CircCHIPK3 enhanced HMGB1/PI3K/AKT signal. Conclusions CirCHIPK3 regulated miR‐193a/HMGB1/PI3K/AKT signaling to facilitate BC development and progression, providing a novel therapeutic target for BC.
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Affiliation(s)
- Zhen-Gang Chen
- Deapartment of Oncology, Tianjin Baodi Hospital, Baodi Clinical College of Tianjin Medical University, Tianjin, China
| | - Hong-Jie Zhao
- Deapartment of Oncology, Tianjin Baodi Hospital, Baodi Clinical College of Tianjin Medical University, Tianjin, China
| | - Ling Lin
- Deapartment of Oncology, Tianjin Baodi Hospital, Baodi Clinical College of Tianjin Medical University, Tianjin, China
| | - Jin-Bo Liu
- Deapartment of Oncology, Tianjin Baodi Hospital, Baodi Clinical College of Tianjin Medical University, Tianjin, China
| | - Jing-Zhen Bai
- Deapartment of General Surgery, Tianjin Baodi Hospital, Baodi Clinical College of Tianjin Medical University, Tianjin, China
| | - Guang-Shun Wang
- Deapartment of Oncology, Tianjin Baodi Hospital, Baodi Clinical College of Tianjin Medical University, Tianjin, China
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85
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Zhu C, Jiang Y, Zhu J, He Y, Yin H, Duan Q, Zhang L, Cao B, An X. CircRNA8220 Sponges MiR-8516 to Regulate Cell Viability and Milk Synthesis via Ras/MEK/ERK and PI3K/AKT/mTOR Pathways in Goat Mammary Epithelial Cells. Animals (Basel) 2020; 10:ani10081347. [PMID: 32759741 PMCID: PMC7459788 DOI: 10.3390/ani10081347] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 07/29/2020] [Accepted: 08/02/2020] [Indexed: 12/13/2022] Open
Abstract
Simple Summary Yield and quality of goat milk are important indexes for screening dairy goat breeds. Therefore, it is necessary for us to improve the yield and quality of goat milk. In this study, we demonstrated that circRNA8220/miR-8516/STC2 could promote the synthesis of β-casein and triglyceride through PI3K/AKT/mTOR pathway. In addition, we found that circRNA8220/miR-8516/STC2 also promote proliferation via Ras/MEK/ERK pathway in goat mammary epithelial cells (GMECs). These findings contribute to a better understanding of circRNA-controlled breast development and lactation mechanisms and provide new potential insights into the regulation of breast development and milk composition in dairy goats. Abstract Circular RNAs (circRNAs), which are considered a large class of endogenous noncoding RNAs, function as regulators in various biological procedures. In this study, the function and molecular mechanisms of circRNA8220 in goat mammary epithelial cells (GMECs) were explored. CircRNA8220 could spong miR-8516 and block the function of miR-8516 by binding to the target site of miR-8516 a negative feedback relationship existed between circRNA8220 and miR-8516. Stanniocalcin 2 (STC2) was a target gene of miR-8516. circRNA8220 could up-regulate the expression of STC2 by sponging miR-8516 in GMECs. circRNA8220/miR-8516/STC2 could promote proliferation and enhance the synthesis of β-casein and triglycerides (TG) via Ras/MEK/ERK and PI3K/AKT/mTOR signaling pathways, respectively.
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86
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Zhu L, Wang C, Lin S, Zong L. CircKIAA0907 Retards Cell Growth, Cell Cycle, and Autophagy of Gastric Cancer In Vitro and Inhibits Tumorigenesis In Vivo via the miR-452-5p/KAT6B Axis. Med Sci Monit 2020; 26:e924160. [PMID: 32722658 PMCID: PMC7412918 DOI: 10.12659/msm.924160] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The significant roles of circular ribonucleic acids (RNAs) in cancers have been discussed in many studies. This report aimed to investigate the biological functions of circKIAA0907 and its action mechanism in gastric cancer (GC). MATERIAL AND METHODS Relative RNA expression levels were determined using quantitative real-time polymerase chain reaction (qRT-PCR). The examination of cell proliferation was performed via 3-(4, 5-dimethylthiazol-2-y1)-2, 5-diphenyl tetrazolium bromide assay. Flow cytometry was used to analyze the apoptosis rate and cell cycle. Protein levels were quantified using western blot. Biotinylated RNA pull-down assay was used to find the microRNA target of circKIAA0907; target binding was validated through dual-luciferase reporter assay. The assay in vivo was executed via a xenograft tumor model to explore the role of circKIAA0907 in GC. RESULTS CircKIAA0907 was downregulated in GC and had higher stability than its linear isoform. Functionally, circKIAA0907 upregulation resulted in the repression of proliferation, cell cycle, and autophagy and promotion of apoptosis in GC cells. Mechanistically, circKIAA0907 bound to miR-452-5p as a specific sponge for it; lysine acetyltransferase 6B (KAT6B) was a target gene of miR-452-5p, so circKIAA0907 elevated KAT6B levels via sponging miR-452-5p. Reversion assays indicated that circKIAA0907 served as a tumor inhibitor by inhibiting miR-452-5p and increasing KAT6B; miR-452-5p inhibition impeded GC development by upregulating KAT6B. The miR-452-5p/KAT6B axis was also accountable for circKIAA0907-induced tumorigenesis suppression in vivo. CONCLUSIONS This work demonstrated that circKIAA0907 has diagnostic and therapeutic value in GC by acting as an oncogenic molecule via the miR-452-5p/KAT6B axis.
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Affiliation(s)
- Lingyu Zhu
- Department of Gastroenterology, Weifang People's Hospital, Weifang, Shandong, China (mainland)
| | - Chunfei Wang
- Department of Gastroenterology, Weifang People's Hospital, Weifang, Shandong, China (mainland)
| | - Shengquan Lin
- Department of Pain, Weifang People's Hospital, Weifang, Shandong, China (mainland)
| | - Lei Zong
- Department of Gastroenterology, Weifang People's Hospital, Weifang, Shandong, China (mainland)
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Cai F, Li J, Zhang J, Huang S. Knockdown of Circ_CCNB2 Sensitizes Prostate Cancer to Radiation Through Repressing Autophagy by the miR-30b-5p/KIF18A Axis. Cancer Biother Radiopharm 2020; 37:480-493. [PMID: 32716640 DOI: 10.1089/cbr.2019.3538] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Background: Circular RNAs (circRNAs) have recently emerged as crucial regulatory molecules in prostate cancer (PCa), but few researches focus on the effects of circRNAs on PCa radiosensitivity. The issue will be addressed in this study using circRNA Cyclin B2 (circ_CCNB2) as an object. Materials and Methods: All RNA and protein levels were severally examined using quantitative real-time polymerase chain reaction and Western blot. Colony formation assay and flow cytometry were implemented for detecting cell colony capacity and apoptotic cells, respectively. Cellular migration and invasion abilities were evaluated by transwell assay. The combination between potential target molecules was analyzed by dual-luciferase reporter and RNA immunoprecipitation (RIP) assays. The effect of circ_CCNB2 on PCa radiosensitivity in vivo was explored using xenograft models in mice. Results: Circ_CCNB2 was upregulated in irradiation-resistant PCa tissues and cells. Circ_CCNB2 knockdown had promoted effect on the radiosensitivity of irradiation-resistant PCa cells by inhibiting autophagy. Besides, circ_CCNB2 could directly sponge miR-30b-5p, and the promotion of circ_CCNB2 knockdown on PCa radiosensitivity was achieved by elevating miR-30b-5p. MiR-30b-5p enhanced the radiosensitivity of irradiation-resistant PCa cells through repressing the expression of its target kinesin family member 18A (KIF18A). Furthermore, circ_CCNB2 regulated the KIF18A level through targeting miR-30b-5p. Circ_CCNB2 downregulation facilitated PCa radiosensitivity in vivo through inhibiting autophagy by miR-30b-5p/KIF18A. Conclusions: In this study, knockdown of circ_CCNB2 was shown to promote PCa radiosensitivity through autophagy repression by miR-30b-5p/KIF18A axis, developing a molecular resistance mechanism of PCa radiotherapy and a feasible strategy to increase radiosensitivity.
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Affiliation(s)
- Fangzhen Cai
- Department of Urology Surgery, the Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Jianwei Li
- Department of Urology Surgery, the Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Jianyu Zhang
- Department of Urology Surgery, the Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Sihuai Huang
- Department of Urology Surgery, the Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
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Circular RNAs in Gastric Cancer: Potential Biomarkers and Therapeutic Targets. BIOMED RESEARCH INTERNATIONAL 2020; 2020:2790679. [PMID: 32685459 PMCID: PMC7345955 DOI: 10.1155/2020/2790679] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 05/29/2020] [Accepted: 06/01/2020] [Indexed: 12/15/2022]
Abstract
Circular RNAs (circRNAs), as a recently established group of endogenous noncoding RNAs, have been involved in the occurrence and development of different malignancies. Gastric cancer (GC) remains a globally significant contributor to death in cancer patients due to insufficient early diagnosis, limited treatment measures, and poor prognosis. An increasing number of studies have found that many circRNAs are dysregulated in GC and are closely associated with its tumorigenesis and metastasis. Thus, circRNAs have the potential to serve as diagnostic and prognostic biomarkers and even therapeutic targets. This review comprehensively summarizes the most recent findings on how circRNAs influence GC progression and their clinical value. In addition, we present several methological deficiencies in the studies and provide some promising ideas for future research.
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Pereira AL, Magalhães L, Pantoja RP, Araújo G, Ribeiro-dos-Santos Â, Vidal AF. The Biological Role of Sponge Circular RNAs in Gastric Cancer: Main Players or Coadjuvants? Cancers (Basel) 2020; 12:E1982. [PMID: 32708088 PMCID: PMC7409348 DOI: 10.3390/cancers12071982] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 06/16/2020] [Accepted: 06/17/2020] [Indexed: 12/24/2022] Open
Abstract
Circular RNAs (circRNAs) are a new class of long noncoding RNAs able to perform multiple functions, including sponging microRNAs (miRNAs) and RNA-Binding Proteins (RBPs). They play an important role in gastric carcinogenesis, but its involvement during gastric cancer (GC) development and progression are not well understood. We gathered miRNA and/or RBPs sponge circRNAs present in GC, and accessed their biological roles through functional enrichment of their target genes or ligand RBPs. We identified 54 sponge circRNAs in GC that are able to sponge 51 miRNAs and 103 RBPs. Then, we evaluated their host gene expression using The Cancer Genome Atlas (TCGA) database and observed that COL1A2 is the most overexpressed gene, which may be due to circHIPK3/miR-29b-c/COL1A2 axis dysregulation. We identified 27 GC-related pathways that may be affected mainly by circPVT1, circHIPK3 and circNF1. Our results indicate that circHIPK3/miR-107/BDNF/LIN28 axis may mediate chemoresistance in GC, and that circPVT1, circHIPK3, circNF1, ciRS-7 and circ_0000096 appear to be involved in gastrointestinal cancer development. Lastly, circHIPK3, circNRIP1 and circSMARCA5 were identified in different ethnic populations and may be ubiquitous modulators of gastric carcinogenesis. Overall, the studied sponge circRNAs are part of a complex RBP-circRNA-miRNA-mRNA interaction network, and are involved in the establishment, chemoresistance and progression of GC.
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Affiliation(s)
- Adenilson Leão Pereira
- Faculty of Medicine, Federal University of Pará, Altamira 68371-163, Brazil;
- Research Center on Oncology, Graduate Program of Oncology and Medical Science, Federal University of Pará, Belém 66073-000, Brazil;
| | - Leandro Magalhães
- Laboratory of Human and Medical Genetics, Institute of Biological Sciences, Graduate Program of Genetics and Molecular Biology, Federal University of Pará, Belém 66075-110, Brazil; (L.M.); (R.P.P.); (G.A.)
| | - Rafael Pompeu Pantoja
- Laboratory of Human and Medical Genetics, Institute of Biological Sciences, Graduate Program of Genetics and Molecular Biology, Federal University of Pará, Belém 66075-110, Brazil; (L.M.); (R.P.P.); (G.A.)
| | - Gilderlanio Araújo
- Laboratory of Human and Medical Genetics, Institute of Biological Sciences, Graduate Program of Genetics and Molecular Biology, Federal University of Pará, Belém 66075-110, Brazil; (L.M.); (R.P.P.); (G.A.)
| | - Ândrea Ribeiro-dos-Santos
- Research Center on Oncology, Graduate Program of Oncology and Medical Science, Federal University of Pará, Belém 66073-000, Brazil;
- Laboratory of Human and Medical Genetics, Institute of Biological Sciences, Graduate Program of Genetics and Molecular Biology, Federal University of Pará, Belém 66075-110, Brazil; (L.M.); (R.P.P.); (G.A.)
| | - Amanda Ferreira Vidal
- Laboratory of Human and Medical Genetics, Institute of Biological Sciences, Graduate Program of Genetics and Molecular Biology, Federal University of Pará, Belém 66075-110, Brazil; (L.M.); (R.P.P.); (G.A.)
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90
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Verma HK, Ratre YK, Mazzone P, Laurino S, Bhaskar LVKS. Micro RNA facilitated chemoresistance in gastric cancer: a novel biomarkers and potential therapeutics. ALEXANDRIA JOURNAL OF MEDICINE 2020. [DOI: 10.1080/20905068.2020.1779992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Henu Kumar Verma
- Developmental and Stem Cell Biology Laboratory, Institute of Experimental Endocrinology and Oncology CNR, Naples, Italy
- Section of Stem Cell and Development, Istituto di Ricerche Genetiche “Gaetano Salvatore” Biogem, Ariano Irpino, Italy
| | | | - Pellegrino Mazzone
- Section of Stem Cell and Development, Istituto di Ricerche Genetiche “Gaetano Salvatore” Biogem, Ariano Irpino, Italy
| | - Simona Laurino
- Laboratory of Preclinical and Translational Research, IRCCS-CROB, Referral Cancer Center of Basilicata (CROB), Rionero in Vulture, Italy
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91
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Nie H, Wang Y, Liao Z, Zhou J, Ou C. The function and mechanism of circular RNAs in gastrointestinal tumours. Cell Prolif 2020; 53:e12815. [PMID: 32515024 PMCID: PMC7377939 DOI: 10.1111/cpr.12815] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 03/21/2020] [Accepted: 04/04/2020] [Indexed: 12/12/2022] Open
Abstract
Gastrointestinal tumours are tumours that originate in the digestive tract and have extremely high morbidity and mortality. The main categories include: oesophageal, gastric, and colorectal cancers. Circular RNAs are a new class of non‐coding RNAs with a covalent closed‐loop structure without a 5’ cap or a 3’ poly A tail, which can encode a small amount of polypeptide. Recent studies have shown that circRNAs are involved in multiple biological processes during the development of gastrointestinal tumours including proliferation, invasion and metastasis, radio‐ and chemoresistance, and inflammatory responses. Also, the clinical and pathological characteristics of the patient, such as staging and lymph node metastasis, are closely associated with the expression level of circRNAs. Further investigation of the function and the role of circRNAs in the development of gastrointestinal tumours will provide new directions for its clinical diagnosis and treatment.
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Affiliation(s)
- Hui Nie
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Yutong Wang
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Zhiming Liao
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China.,Department of Pathology, the Fourth Hospital of Changsha, Changsha, China
| | - Jianhua Zhou
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Chunlin Ou
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
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92
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Wen J, Liao J, Liang J, Chen XP, Zhang B, Chu L. Circular RNA HIPK3: A Key Circular RNA in a Variety of Human Cancers. Front Oncol 2020; 10:773. [PMID: 32500032 PMCID: PMC7242753 DOI: 10.3389/fonc.2020.00773] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 04/21/2020] [Indexed: 12/22/2022] Open
Abstract
Circular RNAs (circRNAs), which act as initiators and promoters of various diseases, were thought to be mostly noncoding RNAs (ncRNAs) in eukaryotes, until recent studies confirmed that some circRNAs have the function of encoding proteins. Accumulating research findings have proved that dysregulation of circRNAs is associated with the developmental process of multiple cancers. circHIPK3, an example of circRNA, is frequently expressed in many diseases, such as diabetes, age-related cataract, idiopathic pulmonary fibrosis, preeclampsia, osteoblasts, and retinal vascular dysfunction, leading to disease development and progression. In addition, circHIPK3 may also serve as a potential biomarker, to help us know more about the rules of occurrence and development of cancers. In recent studies, many circHIPK3-related cancers have been identified, including nasopharyngeal carcinoma, gallbladder cancer, lung cancer, hepatocellular carcinoma, osteosarcoma, glioma, colorectal cancer, ovarian cancer, bladder cancer, prostate cancer, gastric cancer, oral squamous cell carcinoma, and chronic myeloid leukemia. This review summarizes recent studies on the biological mechanisms of circHIPK3 and expounds the molecular mechanisms of circHIPK3 in these malignant tumors.
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Affiliation(s)
- Jingyuan Wen
- Hepatic Surgery Center, Tongji Medical College, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Jingyu Liao
- Hepatic Surgery Center, Tongji Medical College, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Junnan Liang
- Hepatic Surgery Center, Tongji Medical College, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Xiao-Ping Chen
- Hepatic Surgery Center, Tongji Medical College, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Bixiang Zhang
- Hepatic Surgery Center, Tongji Medical College, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Liang Chu
- Hepatic Surgery Center, Tongji Medical College, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
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93
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Li R, Jiang J, Shi H, Qian H, Zhang X, Xu W. CircRNA: a rising star in gastric cancer. Cell Mol Life Sci 2020; 77:1661-1680. [PMID: 31659415 PMCID: PMC11104848 DOI: 10.1007/s00018-019-03345-5] [Citation(s) in RCA: 243] [Impact Index Per Article: 60.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 10/08/2019] [Accepted: 10/14/2019] [Indexed: 01/17/2023]
Abstract
In recent years, a large number of circRNAs have been identified in mammalian cells with high-throughput sequencing technologies and bioinformatics. The aberrant expression of circRNAs has been reported in many human diseases including gastric cancer (GC). The number of GC-related circRNAs with validated biological functions and mechanisms of action is growing. CircRNAs are critically involved in GC cell proliferation, apoptosis, migration, and invasion. CircRNAs have been shown to function as regulators of parental gene transcription and alternative splicing and miRNA sponges. Moreover, circRNAs have been suggested to interact with proteins to regulate their expression level and activities. Several circRNAs have been identified to encode functional proteins. Due to their great abundance, high stability, tissue- and developmental-stage-specific expression patterns, and wide distribution in various body fluids and exosomes, circRNAs exhibit a great potential to be utilized as biomarkers for GC. Herein, we briefly summarize their biogenesis, properties and biological functions and discuss about the current research progress of circRNAs in GC with a focus on the potential application for GC diagnosis and therapy.
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Affiliation(s)
- Rong Li
- Aoyang Institute of Cancer, Jiangsu University, 279 Jingang Road, Suzhou, 215600, Jiangsu, China
- Zhenjiang Key Laboratory of High Technology Research on Exosomes Foundation and Transformation Application, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, China
| | - Jiajia Jiang
- Aoyang Institute of Cancer, Jiangsu University, 279 Jingang Road, Suzhou, 215600, Jiangsu, China
| | - Hui Shi
- Zhenjiang Key Laboratory of High Technology Research on Exosomes Foundation and Transformation Application, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, China
| | - Hui Qian
- Aoyang Institute of Cancer, Jiangsu University, 279 Jingang Road, Suzhou, 215600, Jiangsu, China
- Zhenjiang Key Laboratory of High Technology Research on Exosomes Foundation and Transformation Application, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, China
| | - Xu Zhang
- Aoyang Institute of Cancer, Jiangsu University, 279 Jingang Road, Suzhou, 215600, Jiangsu, China.
- Zhenjiang Key Laboratory of High Technology Research on Exosomes Foundation and Transformation Application, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, China.
| | - Wenrong Xu
- Aoyang Institute of Cancer, Jiangsu University, 279 Jingang Road, Suzhou, 215600, Jiangsu, China.
- Zhenjiang Key Laboratory of High Technology Research on Exosomes Foundation and Transformation Application, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, China.
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94
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Wenzhe G, Jiahao X, Cheng P, Hongwei Z, Xiao Y. Circular RNA HIPK3 is a Prognostic and Clinicopathological Predictor in Malignant Tumor Patients. J Cancer 2020; 11:4230-4239. [PMID: 32368306 PMCID: PMC7196251 DOI: 10.7150/jca.40001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 02/25/2020] [Indexed: 02/07/2023] Open
Abstract
Objectives: Circular RNA Homeodomain Interacting Protein Kinase 3 (circHIPK3) is one of the most researched circRNAs in recent 5 years. Many individual studies confirmed that aberrantly expression of circHIPK3 held prognostic value in various tumors. Thus, the aim of this meta-analysis is to assess its prognostic potentials and functions in malignant tumors. Materials and methods: Multiple databases were carefully searched for articles published about circHIPK3 over the past 10 years. Hazard ratios (HRs) or odds ratios (ORs) with 95% confidence intervals (95% CIs) were calculated to demonstrate prognostic value of circHIPK3 using Stata 15.0 software. Results: 8 studies including 1175 patients were ultimately enrolled in this meta-analysis. Pooled results showed that abnormal expression of circHIPK3 was significantly correlated with unfavorable OS (pooled HR=2.12, 95% CI: 1.69-2.66) and DFS/PFS (HR=2.28, 95% CI: 1.67-3.10) in cancer patients. Additionally, abnormal expression of circHIPK3 was also related to the distal metastasis of the tumors (OR: 3.27, 95%CI: 2.16-4.97, p<0.001). Conclusions: Abnormal expression of circHIPK3, no matter high or low expression, was associated with poor clinical outcomes in multiple cancer types. More comprehensive studies were required to verify and strengthen the clinical value of circHIPK3 in human malignant diseases.
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Affiliation(s)
- Gao Wenzhe
- Department of Hepatobiliary and Pancreatic Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province, China 410013.,Medical College of Xiangya, Central South University, Changsha, Hunan Province, China 410013
| | - Xu Jiahao
- Medical College of Xiangya, Central South University, Changsha, Hunan Province, China 410013.,Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province, China 410013
| | - Peng Cheng
- Department of Hepatobiliary and Pancreatic Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province, China 410013.,Medical College of Xiangya, Central South University, Changsha, Hunan Province, China 410013
| | - Zhu Hongwei
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province, China 410013
| | - Yu Xiao
- Department of Hepatobiliary and Pancreatic Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province, China 410013
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95
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Jia E, Zhou Y, Liu Z, Wang L, Ouyang T, Pan M, Bai Y, Ge Q. Transcriptomic Profiling of Circular RNA in Different Brain Regions of Parkinson's Disease in a Mouse Model. Int J Mol Sci 2020; 21:ijms21083006. [PMID: 32344560 PMCID: PMC7216060 DOI: 10.3390/ijms21083006] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/22/2020] [Accepted: 04/23/2020] [Indexed: 01/20/2023] Open
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disease and although many studies have been done on this disease, the underlying mechanisms are still poorly understood and further studies are warranted. Therefore, this study identified circRNA expression profiles in the cerebral cortex (CC), hippocampus (HP), striatum (ST), and cerebellum (CB) regions of the 1-methyl-1,2,3,6-tetrahydropyridine (MPTP)-induced PD mouse model using RNA sequencing (RNA-seq), and differentially expressed circRNA were validated using reverse transcription quantitative real-time PCR (qRT-PCR). Gene ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway, and competing endogenous RNA (ceRNA) network analyses were also performed to explore the potential function of circRNAs. The results show that, compared with the control group, 24, 66, 71, and 121 differentially expressed circRNAs (DE-circRNAs) were found in the CC, HP, ST, and CB, respectively. PDST vs. PDCB, PDST vs. PDHP, and PDCB vs. PDHP groups have 578, 110, and 749 DE-circRNAs, respectively. Then, seven DE-cirRNAs were selected for qRT-PCR verification, where the expressions were consistent with the sequencing analysis. The GO and KEGG pathway analyses revealed that these DE-circRNAs participate in several biological functions and signaling pathways, including glutamic synapse, neuron to neuron synapse, cell morphogenesis involved in neuron differentiation, Parkinson's disease, axon guidance, cGMP-PKG signaling pathway, and PI3K-Akt signaling pathway. Furthermore, the KEGG analysis of the target genes predicted by DE-circRNAs indicated that the target genes predicted by mmu_circRNA_0003292, mmu_circRNA_0001320, mmu_circRNA_0005976, and mmu_circRNA_0005388 were involved in the PD-related pathway. Overall, this is the first study on the expression profile of circRNAs in the different brain regions of PD mouse model. These results might facilitate our understanding of the potential roles of circRNAs in the pathogenesis of PD. Moreover, the results also indicate that the mmu_circRNA_0003292-miRNA-132-Nr4a2 pathway might be involved in the regulation of the molecular mechanism of Parkinson's disease.
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Affiliation(s)
- Erteng Jia
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China; (E.J.); (Y.Z.); (Z.L.); (L.W.); (T.O.); (Y.B.)
| | - Ying Zhou
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China; (E.J.); (Y.Z.); (Z.L.); (L.W.); (T.O.); (Y.B.)
| | - Zhiyu Liu
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China; (E.J.); (Y.Z.); (Z.L.); (L.W.); (T.O.); (Y.B.)
| | - Liujing Wang
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China; (E.J.); (Y.Z.); (Z.L.); (L.W.); (T.O.); (Y.B.)
| | - Tinglan Ouyang
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China; (E.J.); (Y.Z.); (Z.L.); (L.W.); (T.O.); (Y.B.)
| | - Min Pan
- School of Medicine, Southeast University, Nanjing 210097, China;
| | - Yunfei Bai
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China; (E.J.); (Y.Z.); (Z.L.); (L.W.); (T.O.); (Y.B.)
| | - Qinyu Ge
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China; (E.J.); (Y.Z.); (Z.L.); (L.W.); (T.O.); (Y.B.)
- Correspondence: ; Tel.: +86-25-8379-2396
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96
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Wang L, You Z, Wang M, Yuan Y, Liu C, Yang N, Zhang H, Lian L. Genome-wide analysis of circular RNAs involved in Marek's disease tumourigenesis in chickens. RNA Biol 2020; 17:517-527. [PMID: 31948317 PMCID: PMC7237138 DOI: 10.1080/15476286.2020.1713538] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 01/02/2020] [Accepted: 01/04/2020] [Indexed: 01/01/2023] Open
Abstract
Marek's disease (MD), induced by Marek's disease virus (MDV), is a lymphotropic neoplastic disease and causes huge economic losses to the poultry industry. Non-coding RNAs (ncRNAs) play important regulatory roles in disease pathogenesis. To investigate host circular RNA (circRNA) and microRNA (miRNA) expression profile, RNA sequencing was performed in tumourous spleens (TS), spleens from the survivors (SS) without any lesion after MDV infection, and non-infected chicken spleens (NS). A total of 2,169 circRNAs were identified and more than 80% of circRNAs were derived from exon. The flanking introns of 1,744 exonic circRNAs possessed 579 reverse complementary matches (RCMs), which mainly overlapped with chicken repeat 1 family (CR1F). It suggested that CR1F mediated the cyclization of exons by intron pairing. Out of 2,169 circRNAs, 113 were differentially expressed circRNAs (DECs). The Q-PCR and Rnase R digestion experiments showed circRNA possessed high stability compared with their linear RNAs. Integrated with previous transcriptome data, we profiled regulatory networks of circRNA/long non-coding RNA (lncRNA)-miRNA-mRNA. Extensive competing endogenous RNA (ceRNA) networks were predicted to be involved in MD tumourigenesis. Interestingly, circZMYM3, an intronic circRNA, interacted with seven miRNAs which targeted some immune genes, such as SWAP70 and CCL4. Gga-miR-155 not only interacted with circGTDC1 and circMYO1B, but also targeted immune-related genes, such as GATA4, which indicated the roles of non-coding RNAs played to mediate immune responsive genes. Collectively, this is the first study that integrated RNA expression profiles in MD model. Our results provided comprehensive interactions of ncRNAs and mRNA in MD tumourigenesis.
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Affiliation(s)
- Lulu Wang
- Department of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Zhen You
- Department of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Mingyue Wang
- Department of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Yiming Yuan
- Department of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Changjun Liu
- Division of Avian Infectious Diseases, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, China
| | - Ning Yang
- Department of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Hao Zhang
- Department of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Ling Lian
- Department of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
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97
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Cheng J, Zhuo H, Wang L, Zheng W, Chen X, Hou J, Zhao J, Cai J. Identification of the Combinatorial Effect of miRNA Family Regulatory Network in Different Growth Patterns of GC. MOLECULAR THERAPY-ONCOLYTICS 2020; 17:531-546. [PMID: 32637572 PMCID: PMC7321821 DOI: 10.1016/j.omto.2020.03.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 03/24/2020] [Indexed: 12/24/2022]
Abstract
According to the growth pattern, gastric cancer (GC) could be classified into expanding-type GC and infiltrative-type GC (Ming’s classification). The growth pattern of GC is often related to the malignant degree, invasion, metastasis, and other pathological characteristics of tumors. MicroRNAs (miRNAs) play important roles in modulating gene expression during the GC development. In this study, miR-29s were significantly correlated with the gastric carcinogenesis and Ming’s classification. Biological function of miR-29s is most closely related to the pathway of extracellular matrix (ECM)-receptor interaction. ECM structural assembly, cell movement, and cell adhesion are the main functional categories of target genes in this pathway. Among these targets, the COL4A1 gene ranked at the top in the association analysis of combined miR-29s biological function and GC subtype, and miR-29s inhibited its translation by binding to the 3′ UTR region. Infiltrative-type GC cells secrete a higher level of COL4A1 protein than do expanding-type GC cells. The expression of COL4A1 in GC is correlated with clinicopathological features. Downregulation of COL4A1 expression significantly inhibited the migration and invasion of GC cells. High COL4A1 expression was correlated with poor prognosis in survival analysis. The miR-29s regulatory network may affect the development of growth patterns and pathological progress of GC by regulating the function of COL4A1.
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Affiliation(s)
- Jia Cheng
- Department of Gastrointestinal Surgery, Zhongshan Hospital, Xiamen University, Xiamen, Fujian 361004, China.,Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen, Fujian 361004, China.,Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen, Fujian 361004, China
| | - Huiqin Zhuo
- Department of Gastrointestinal Surgery, Zhongshan Hospital, Xiamen University, Xiamen, Fujian 361004, China.,Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen, Fujian 361004, China.,Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen, Fujian 361004, China
| | - Lin Wang
- Department of Gastrointestinal Surgery, Zhongshan Hospital, Xiamen University, Xiamen, Fujian 361004, China.,Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen, Fujian 361004, China.,Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen, Fujian 361004, China
| | - Wei Zheng
- Department of Gastrointestinal Surgery, Zhongshan Hospital, Xiamen University, Xiamen, Fujian 361004, China.,Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen, Fujian 361004, China.,Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen, Fujian 361004, China
| | - Xin Chen
- Union Hospital, Fujian Medical University, Fuzhou, Fujian 350001, China
| | - Jingjing Hou
- Department of Gastrointestinal Surgery, Zhongshan Hospital, Xiamen University, Xiamen, Fujian 361004, China.,Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen, Fujian 361004, China.,Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen, Fujian 361004, China
| | - Jiabao Zhao
- Department of Gastrointestinal Surgery, Zhongshan Hospital, Xiamen University, Xiamen, Fujian 361004, China.,Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen, Fujian 361004, China.,Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen, Fujian 361004, China
| | - Jianchun Cai
- Department of Gastrointestinal Surgery, Zhongshan Hospital, Xiamen University, Xiamen, Fujian 361004, China.,Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen, Fujian 361004, China.,Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen, Fujian 361004, China.,Union Hospital, Fujian Medical University, Fuzhou, Fujian 350001, China
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98
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The Regulatory Functions of Circular RNAs in Digestive System Cancers. Cancers (Basel) 2020; 12:cancers12030770. [PMID: 32213977 PMCID: PMC7140005 DOI: 10.3390/cancers12030770] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 03/19/2020] [Accepted: 03/20/2020] [Indexed: 02/07/2023] Open
Abstract
Circular ribonucleic acids (circRNAs), which are a type of covalently closed circular RNA, are receiving increasing attention. An increasing amount of evidence suggests that circRNAs are involved in the biogenesis and development of multiple diseases such as digestive system cancers. Dysregulated circRNAs have been found to act as oncogenes or tumour suppressors in digestive system cancers. Moreover, circRNAs are related to ageing and a wide variety of processes in tumour cells, such as cell apoptosis, invasion, migration, and proliferation. Moreover, circRNAs can perform a remarkable multitude of biological functions, such as regulating splicing or transcription, binding RNA-binding proteins to enable function, acting as microRNA (miRNA) sponges, and undergoing translated into proteins. However, in digestive system cancers, circRNAs function mainly as miRNA sponges. Herein, we summarise the latest research progress on biological functions of circRNAs in digestive system cancers. This review serves as a synopsis of potential therapeutic targets and biological markers for digestive system cancer.
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99
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Li M, Li Y, Yu M. CircRNA ZNF609 Knockdown Suppresses Cell Growth via Modulating miR-188/ELF2 Axis in Nasopharyngeal Carcinoma. Onco Targets Ther 2020; 13:2399-2409. [PMID: 32273713 PMCID: PMC7107005 DOI: 10.2147/ott.s234230] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 01/16/2020] [Indexed: 12/23/2022] Open
Abstract
Background Circular RNAs (circRNAs) and microRNAs (miRNAs) have been reported to act as the important regulators in nasopharyngeal carcinoma (NPC). CircRNA ZNF609 (circ-ANF609) and miR-188 have been, respectively, reported to play a pro-cancer and anti-cancer role in NPC. The purpose of this study is to reveal the functional relation of circ-ZNF609 and miR-188 in NPC development. Methods The transcription level and protein level of genes were detected by quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot assay, respectively. Cell proliferation was analyzed using 3-(4, 5-dimethyl-2-thiazolyl)-2, 5-diphenyl-2-H-tetrazolium bromide (MTT) assay. Furthermore, flow cytometry analysis was used to assess cell cycle transition and cell apoptosis rate. Besides, the interaction between miR-188 and circ-ZNF609 or E74-like factor 2 (ELF2) was predicted by starbase or microT-CDS, and then confirmed by the dual luciferase reporter assay and RIP assay. Results Circ-ZNF609 and ELF2 levels were increased and miR-188 level was decreased in NPC. Circ-ZNF609 knockdown significantly inhibited cell proliferation and cell cycle transition, as well as accelerated apoptosis in NPC cells. Interestingly, circ-ZNF609 directly bound to miR-188. Circ-ZNF609 regulated NPC cell growth through modulating miR-188 expression. In addition, miR-188 suppressed NPC cell growth via directly targeting ELF2. Finally, we confirmed that circ-ZNF609 mediated miR-188 level to modulate ELF2 expression. Conclusion Our findings demonstrated that circ-ZNF609 depletion-repressed proliferation and cell cycle transition, and induced apoptosis of NPC cells via modulation of miR-188/ELF2 axis, providing potential targets for the therapy of NPC.
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Affiliation(s)
- Mingyan Li
- Department of Otolaryngology-Head and Neck Surgery, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, People's Republic of China
| | - Yujie Li
- Department of Otolaryngology-Head and Neck Surgery, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, People's Republic of China
| | - Min Yu
- Department of Otolaryngology-Head and Neck Surgery, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, People's Republic of China
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100
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Chen H, Wang K, Pei D, Xu H. Appraising circular RNAs as novel biomarkers for the diagnosis and prognosis of gastric cancer: A pair-wise meta-analysis. J Clin Lab Anal 2020; 34:e23303. [PMID: 32196751 PMCID: PMC7439415 DOI: 10.1002/jcla.23303] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/21/2020] [Accepted: 02/22/2020] [Indexed: 12/24/2022] Open
Abstract
Background Circular RNAs (circRNAs), proven as single‐stranded closed RNA molecules, have been implicated in the onset and development of multiple cancers. This study aimed to summarize existing evidences regarding the clinicopathologic, diagnostic, and prognostic significances of circRNAs in gastric cancer (GC). Methods Eligible studies were identified using online databases. The quality of the included studies was judged, and patients' clinical characteristics, diagnostic data, and overall survival (OS) were extracted from the electronic medical record. Fisher's method was adopted to determine P values for clinicopathologic features. The diagnostic and prognostic data from all included studies were merged. Results Thirty eligible studies were comprised of 2687 GC patients were enrolled in the meta‐analyses. Altered expressions of circRNAs in GC tissues were significantly associated with worse clinicopathologic features. Abnormally expressed circRNAs yielded a pooled sensitivity of 0.76 (95% CI: 0.69‐0.81) and a specificity of 0.77 (95% CI: 0.70‐0.83) in distinguishing GC from noncancerous controls, which corresponded to an area under the curve (AUC) of 0.83. The survival analysis showed that the oncogenic circRNA signature could be an independent risk factor of OS (HR = 2.11, 95% CI: 1.60‐2.78, P = .000). Patients with down‐regulated circRNAs (tumor suppressor genes) presented a significantly shorter OS time than those with high‐level circRNAs (HR = 0.33, 95% CI: 0.27‐0.42, P = .000). Stratified analyses based on sample type, control source, circRNA expression status, and cutoff setting also produced robust results. Conclusions CircRNAs may play an important role as potential diagnostic and prognostic biomarkers of GC.
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Affiliation(s)
- Hongjun Chen
- Department of Clinical Laboratory, Anyang Tumor Hospital, The Fourth Affiliated Hospital of Henan University of Science and Technology, Anyang, China
| | - Kun Wang
- Department of Clinical Laboratory, Huanghe Sanmenxia Hospital, Sanmenxia, China
| | - Dongxu Pei
- Department of Clinical Laboratory, Henan Province Hospital of TCM, Zhengzhou, China
| | - Haisheng Xu
- Department of Clinical Laboratory, Anyang Tumor Hospital, The Fourth Affiliated Hospital of Henan University of Science and Technology, Anyang, China
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