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circRNA or "circular RNA"

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https://read.qxmd.com/read/30763218/circular-rna-control-of-vascular-smooth-muscle-cell-functions
#1
EDITORIAL
Andreas W Heumüller, Stefanie Dimmeler
No abstract text is available yet for this article.
February 15, 2019: Circulation Research
https://read.qxmd.com/read/30760518/yy1-complex-promotes-quaking-expression-via-super-enhancer-binding-during-emt-of-hepatocellular-carcinoma
#2
Jingxia Han, Jing Meng, Xiaorui Wang, Shan Yin, Qiang Zhang, Huijuan Liu, Rong Qin, Zhongwei Li, Weilong Zhong, Chao Zhang, Heng Zhang, Yuanhao Tang, Tingting Lin, Wanfeng Gao, Xiaoyun Zhang, Lan Yang, Yanrong Liu, Hong-Gang Zhou, Shuang Chen, Tao Sun, Cheng Yang
Quaking (QKI) is an alternative splicing factor that can regulate circRNA formation in the progression of epithelial-mesenchymal transition, but the mechanism remains unclear. High expression of QKI is correlated with short survival time, metastasis, and high clinical stage and pathology grade in hepatocellular carcinoma (HCC). Here we report that transcription of the QKI gene was activated by the Yin-Yang 1 (YY1)/p65/p300 complex, in which YY1 bound to the super-enhancer and promoter of QKI, p65 combined with the promoter, and p300 served as a mediator to maintain the stability of the complex...
February 13, 2019: Cancer Research
https://read.qxmd.com/read/30756390/circular-rna-expression-profiles-during-the-differentiation-of-human-umbilical-cord-derived-mesenchymal-stem-cells-into-cardiomyocyte-like-cells
#3
Zhong-Bao Ruan, Ge-Cai Chen, Rui Zhang, Li Zhu
So far, there were no reports on circular RNA (circRNA) expression profiles in the differentiation of human umbilical cord-derived mesenchymal stem cells (hUCMSCs) into cardiomyocyte-like cells induced by 5-aza. In this study, hUCMSCs were isolated from umbilical cords and induced with 5-aza for 14 days. Immunofluorescence staining, real-time reverse transcription polymerase chain reaction (RT-PCR), and western blot of cardiac troponin I and α-sarcomeric actin on hUCMSCs between Days 14 and 0 were performed...
February 12, 2019: Journal of Cellular Physiology
https://read.qxmd.com/read/30746688/profiles-analysis-reveals-circular-rnas-involving-zebrafish-physiological-development
#4
Heng Liu, Yin Hu, Jing Yin, Xiang-Yun Yan, Wen-Juan Chen, Cheng-Yao Jiang, Xiao-Shan Hu, Xing-Yun Wang, Jin-Gai Zhu, Zhang-Bin Yu, Shu-Ping Han
Recent studies have found that known functions of circular RNAs (circRNAs) include sequestration of microRNAs (miRNAs) or proteins, modulation of transcription and interference with splicing, and even translation to produce polypeptides. The zebrafish model is also demonstrably similar to humans in many studies. To explore the changes in circRNAs during embryonic development and to further research the mechanism of action of circRNAs in development-related diseases, Zebrafish embryos at the blastula period, gastrula period, segmentation period, throat stage, and incubation period were collected...
February 11, 2019: Journal of Cellular Physiology
https://read.qxmd.com/read/30745833/hypoxia-elevated-circelp3-contributes-to-bladder-cancer-progression-and-cisplatin-resistance
#5
Yinjie Su, Weiping Yang, Ning Jiang, Juanyi Shi, Luping Chen, Guangzheng Zhong, Junming Bi, Wei Dong, Qiong Wang, Chunhui Wang, Tianxin Lin
Hypoxia plays a critical role in cancer biology. It induces genomic instability, which in turn helps cancer cells respond adaptively to meet the needs of carcinogenesis, cancer progression and relapse. Circular RNA has not been reported among the variety of downstream factors in this adaptive response. Although a few studies have demonstrated the important role of circular RNAs in driving human bladder cancer progression, their carcinogenic roles are still under investigated. Here, we identified a hypoxia-elevated circular RNA, circELP3, that contributes to bladder cancer progression and cisplatin resistance...
2019: International Journal of Biological Sciences
https://read.qxmd.com/read/30745810/circular-rna-a-novel-biomarker-and-therapeutic-target-for-human-cancers
#6
REVIEW
Bo Lei, Zhiqiang Tian, Weiping Fan, Bing Ni
Circular (circ)RNAs, a newly recognized class of noncoding RNA, have been implicated in the occurrence and development of several diseases, including neurological and cardiovascular diseases. Studies of human tumors, including those of liver cancer, gastric cancer, lung cancer and colorectal cancer, have shown differential expression profiles of circRNAs, suggesting regulatory roles in cancer pathogenesis and metastasis. In this review, we discuss the most recent research into tumor-related circRNAs, providing a comprehensive summary of the expression or/and function of these circRNAs and proposing rational perspectives on the potential clinical application of circRNAs as helpful biomarkers or therapeutic targets in human tumors...
2019: International Journal of Medical Sciences
https://read.qxmd.com/read/30745107/circrna-hsa-circ-0014359-promotes-glioma-progression-by-regulating-mir-153-pi3k-signaling
#7
Fei Shi, Zhonghua Shi, Yaodong Zhao, Jiwei Tian
RNA back splicing produces circRNA, a new type of non-coding RNA. Studies have indicated that circRNAs play important roles in malignant tumors of the central nervous system. Here, we aimed to evaluate the expression of the circRNA, hsa-circ-0014359 (circ-0014359) in human glioma cell lines to assess its function in glioma progression and prognosis. The expression of circ-0014359 was increased in T98G and SHG44 cancer cell lines and glioma tissues from patients, when compared with control cells and tissue. SiRNA-mediated silencing of circ-0014359 potently inhibited cell viability, migration, invasion, and apoptosis of glioma cells...
February 8, 2019: Biochemical and Biophysical Research Communications
https://read.qxmd.com/read/30744636/circkif4a-acts-as-a-prognostic-factor-and-mediator-to-regulate-the-progression-of-triple-negative-breast-cancer
#8
Hailin Tang, Xiaojia Huang, Jin Wang, Lu Yang, Yanan Kong, Guanfeng Gao, Lijuan Zhang, Zhe-Sheng Chen, Xiaoming Xie
BACKGROUND: Increasing studies has found that circular RNAs (circRNAs) play vital roles in cancer progression. But the expression profile and function of circRNAs in triple-negative breast cancer (TNBC) are unclear. METHODS: We used a circRNA microarray to explore the circRNA expression profile of TNBC. The expression of the top upregulated circRNA, circKIF4A, was confirmed by qRT-PCR in breast cancer cell lines and tissues. Kaplan-Meier survival analysis was conducted to analyze the clinical impact of circKIF4A on TNBC...
February 11, 2019: Molecular Cancer
https://read.qxmd.com/read/30742923/circular-rna-circptk2-regulates-oxygen-glucose-deprivation-activated-microglia-induced-hippocampal-neuronal-apoptosis-via-mir-29b-socs-1-jak2-stat3-il-1%C3%AE-signaling
#9
Huilin Wang, Zheng Li, Jingyan Gao, Qingwu Liao
Oxygen-glucose deprivation (OGD)-activated microglia contribute to neuronal apoptosis via releasing pro-inflammatory cytokines, and some miRNAs have been reported to be involved in this process. Circular RNAs (circRNAs) have been reported to function as miRNA sponges, but it remains unknown whether and how circRNAs contribute to OGD-activated microglia-induced neuronal apoptosis. Here, we investigated the function and relationship of miR-29b and circPTK2 in OGD-activated microglia-induced neuronal apoptosis...
February 8, 2019: International Journal of Biological Macromolecules
https://read.qxmd.com/read/30738578/upregulated-circular-rna-circ_0074027-promotes-glioblastoma-cell-growth-and-invasion-by-regulating-mir-518a-5p-il17rd-signaling-pathway
#10
Lili Qian, Jie Guan, Yanmin Wu, Qi Wang
Glioblastoma (GBM) is one of the major cause of the cancer-related fatality worldwide. Several circular RNAs (circRNAs) have been observed to exert functions in GBM. The current study is aimed to explore the potential mechanism of circ_0074027 via miR-518a-5p and IL17RD in GBM progression. Circ_0074027 expression was determined in a cohort of 50 pairs of GBM specimens and five cell lines by qRT-PCR. In addition, the association between circ_0074027 expression and its clinical value was analyzed by Fisher's exact test...
February 6, 2019: Biochemical and Biophysical Research Communications
https://read.qxmd.com/read/30737027/enhanced-expression-of-circ_0000735-forecasts-clinical-severity-in-nsclc-and-promotes-cell-progression-via-sponging-mir-1179-and-mir-1182
#11
Wei Li, Wei Jiang, Tongmiao Liu, Jia Lv, Jian Guan
Although numerous dysregulated circular RNAs (circRNAs) was discovered, the study between circRNAs and non-small cell lung cancer (NSCLC) is just beginning. Here, we investigated the functions and provided a possible mechanism of circ_0000735 for NSCLC. Real-time PCR was used to elucidate the level of circ_0000735 in NSCLC tissue samples and cells. CCK8, colony formation, flow cytometric, and transwell experiments were carried out to evaluate cell proliferation, apoptosis, migratory and invasive abilities in NSCLC cell lines...
February 5, 2019: Biochemical and Biophysical Research Communications
https://read.qxmd.com/read/30736847/hsa_circrna_0054633-is-highly-expressed-in-gestational-diabetes-mellitus-and-closely-related-to-glycosylation-index
#12
Hangyu Wu, Siyang Wu, Yingchao Zhu, Mei Ye, Jun Shen, Yan Liu, Yisheng Zhang, Shizhong Bu
BACKGROUND: Circular RNA (circRNA) is involved in the pathological processes of various diseases. CircRNA is more stable than linear RNAs and is expressed in high levels in tissues, making it a better biomarker candidate than linear RNAs. In this study, we aimed to identify potential circRNA biomarkers of gestational diabetes mellitus (GDM). METHODS: A retrospective case-control study was conducted using data and samples from women treated at a hospital in China between July 10, 2017, and February 15, 2018...
February 8, 2019: Clinical Epigenetics
https://read.qxmd.com/read/30736838/fus-circ_002136-mir-138-5p-sox13-feedback-loop-regulates-angiogenesis-in-glioma
#13
Zhenwei He, Xuelei Ruan, Xiaobai Liu, Jian Zheng, Yunhui Liu, Libo Liu, Jun Ma, Lianqi Shao, Di Wang, Shuyuan Shen, Chunqing Yang, Yixue Xue
BACKGROUND: Angiogenesis plays a critical role in the progression of glioma. Previous studies have indicated that RNA-binding proteins (RBPs) interact with RNAs and participate in the regulation of the malignant behaviors of tumors. As a type of endogenous non-coding RNAs, circular RNAs (circRNAs) are abnormally expressed in various cancers and are involved in diverse tumorigeneses including angiogenesis. METHODS: The expression levels of FUS, circ_002136, miR-138-5p, SOX13, and SPON2 were determined using quantitative real-time PCR (qRT-PCR) and western blot...
February 8, 2019: Journal of Experimental & Clinical Cancer Research: CR
https://read.qxmd.com/read/30735636/the-landscape-of-circular-rna-in-cancer
#14
Josh N Vo, Marcin Cieslik, Yajia Zhang, Sudhanshu Shukla, Lanbo Xiao, Yuping Zhang, Yi-Mi Wu, Saravana M Dhanasekaran, Carl G Engelke, Xuhong Cao, Dan R Robinson, Alexey I Nesvizhskii, Arul M Chinnaiyan
Circular RNAs (circRNAs) are an intriguing class of RNA due to their covalently closed structure, high stability, and implicated roles in gene regulation. Here, we used an exome capture RNA sequencing protocol to detect and characterize circRNAs across >2,000 cancer samples. When compared against Ribo-Zero and RNase R, capture sequencing significantly enhanced the enrichment of circRNAs and preserved accurate circular-to-linear ratios. Using capture sequencing, we built the most comprehensive catalog of circRNA species to date: MiOncoCirc, the first database to be composed primarily of circRNAs directly detected in tumor tissues...
February 7, 2019: Cell
https://read.qxmd.com/read/30735634/widespread-and-functional-rna-circularization-in-localized-prostate-cancer
#15
Sujun Chen, Vincent Huang, Xin Xu, Julie Livingstone, Fraser Soares, Jouhyun Jeon, Yong Zeng, Junjie Tony Hua, Jessica Petricca, Haiyang Guo, Miranda Wang, Fouad Yousif, Yuzhe Zhang, Nilgun Donmez, Musaddeque Ahmed, Stas Volik, Anna Lapuk, Melvin L K Chua, Lawrence E Heisler, Adrien Foucal, Natalie S Fox, Michael Fraser, Vinayak Bhandari, Yu-Jia Shiah, Jiansheng Guan, Jixi Li, Michèle Orain, Valérie Picard, Hélène Hovington, Alain Bergeron, Louis Lacombe, Yves Fradet, Bernard Têtu, Stanley Liu, Felix Feng, Xue Wu, Yang W Shao, Malgorzata A Komor, Cenk Sahinalp, Colin Collins, Youri Hoogstrate, Mark de Jong, Remond J A Fijneman, Teng Fei, Guido Jenster, Theodorus van der Kwast, Robert G Bristow, Paul C Boutros, Housheng Hansen He
The cancer transcriptome is remarkably complex, including low-abundance transcripts, many not polyadenylated. To fully characterize the transcriptome of localized prostate cancer, we performed ultra-deep total RNA-seq on 144 tumors with rich clinical annotation. This revealed a linear transcriptomic subtype associated with the aggressive intraductal carcinoma sub-histology and a fusion profile that differentiates localized from metastatic disease. Analysis of back-splicing events showed widespread RNA circularization, with the average tumor expressing 7,232 circular RNAs (circRNAs)...
February 7, 2019: Cell
https://read.qxmd.com/read/30734026/twist1-regulation-of-circrna-a-novel-mechanism-to-promote-epithelial-mesenchymal-transition-in-hepatocellular-carcinoma
#16
Zachary A Yochum, Timothy F Burns
No abstract text is available yet for this article.
December 2018: Non-coding RNA investigation
https://read.qxmd.com/read/30733823/baduanjin-exerts-anti-diabetic-and-anti-depression-effects-by-regulating-the-expression-of-mrna-lncrna-and-circrna
#17
Tian An, Zhong-Chen He, Xin-Qing Zhang, Jun Li, Ai-Ling Chen, Fang Tan, Hong-Dong Chen, Bo-Han Lv, Juan Lian, Si-Hua Gao, Guang-Jian Jiang
Background: Baduanjin, a traditional Chinese exercise therapy, has been widely used in China to treat type 2 diabetes (T2DM) with depression (DD). However, the underlying mechanism of Baduanjin in anti-DD is unclear. This study was focused on investigating the effects of Baduanjin on symptoms of depression and blood glucose in patients with DD and the underlying mechanism. Methods: We performed a 12-week Baduanjin intervention on patients with DD and longitudinally compared the differential expressions of lncRNAs, circRNAs, and mRNAs between pre- (BDD) and post- (ADD) Baduanjin intervention in the same group...
2019: Chinese Medicine
https://read.qxmd.com/read/30733646/hsa_circ_0081143-promotes-cisplatin-resistance-in-gastric-cancer-by-targeting-mir-646-cdk6-pathway
#18
Minghui Xue, Guangyan Li, Xiangjie Fang, Lili Wang, Yuhong Jin, Qinglan Zhou
Background: Increasing studies indicated that circRNAs play critical roles in tumor progression. However, the roles and underlying mechanisms of circRNAs in gastric cancer (GC) remain largely unclear. Methods: Microarray assay was used to screen the abnormally expressed circRNAs in GC. Cell viability assay, transwell assay and in vivo assay were performed to assess the effects of hsa_circ_0081143 on GC cells. Next, interaction between hsa_circ_0081143 and miR-646 was detected by luciferase reporter assay and RNA pull-down assay...
2019: Cancer Cell International
https://read.qxmd.com/read/30723269/the-circints4-mir-146b-carma3-axis-promotes-tumorigenesis-in-bladder-cancer
#19
Xiaotong Zhang, Xi Liu, Zhifei Jing, Jianbin Bi, Zeliang Li, Xiankui Liu, Jun Li, Zhenhua Li, Zhe Zhang, Chuize Kong
Accumulating evidence shows that circular RNAs (circRNAs) function as microRNA sponges that regulate gene expression in the progression of human cancers. However, the roles of circRNAs and functional miRNA sponges in bladder cancer (BC) remain largely unknown. In the present study, we applied bioinformatics methods and hypothesised that miR-146b may target the 3'-untranslated region (UTR) of CARMA3 mRNA and circINTS4 may serve as a sponge for miR-146b in BC tumorigenesis. Expression of circINTS4 was significantly increased in miR-146b-downregulated BC tissues and cell lines compared to adjacent normal tissues...
February 6, 2019: Cancer Gene Therapy
https://read.qxmd.com/read/30722989/circular-rna-circ-rad23b-promotes-cell-growth-and-invasion-by-mir-593-3p-ccnd2-and-mir-653-5p-tiam1-pathways-in-non-small-cell-lung-cancer
#20
Wei Han, Lifan Wang, Linhan Zhang, Yangyang Wang, Yong Li
Non-small cell lung cancer (NSCLC) is an aggressive malignancy with poor clinical outcomes. Accumulating evidence indicated that dysregulation of circular RNAs (circRNAs) plays a key role in multiple solid tumors. In this study, circ-RAD23B was explored. The expression of circ-RAD23B in NSCLC was detected by RT-qPCR. The clinical value of circ-RAD23B was analyzed by Fisher's exact test and Kaplan-Meier curves. Gain and loss of function experiments were carried out to elucidate the biological functions of circ-RAD23B in NSCLC cell lines...
February 2, 2019: Biochemical and Biophysical Research Communications
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