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Soslau G. Platelet protein synthesis, regulation, and post-translational modifications: mechanics and function. Crit Rev Biochem Mol Biol 2023; 58:99-117. [PMID: 37347996 DOI: 10.1080/10409238.2023.2224532] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 06/08/2023] [Indexed: 06/24/2023]
Abstract
Dogma had been firmly entrenched in the minds of the scientific community that the anucleate mammalian platelet was incapable of protein biosynthesis since their identification in the late 1880s. These beliefs were not challenged until the 1960s when several reports demonstrated that platelets possessed the capacity to biosynthesize proteins. Even then, many still dismissed the synthesis as trivial and unimportant for at least another two decades. Research in the field expanded after the 1980s and numerous reports have since been published that now clearly demonstrate the potential significance of platelet protein synthesis under normal, pathological, and activating conditions. It is now clear that the platelet proteome is not a static entity but can be altered slowly or rapidly in response to external signals to support physiological requirements to maintain hemostasis and other biological processes. All the necessary biological components to support protein synthesis have been identified in platelets along with post-transcriptional processing of mRNAs, regulators of translation, and post-translational modifications such as glycosylation. The last comprehensive review of the subject appeared in 2009 and much work has been conducted since that time. The current review of the field will briefly incorporate the information covered in earlier reviews and then bring the reader up to date with more recent findings.
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Affiliation(s)
- Gerald Soslau
- Department of Biochemistry and Molecular Biology Drexel University College of Medicine, Philadelphia, PA, United States
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2
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Eleazer R, De Silva K, Andreeva K, Jenkins Z, Osmani N, Rouchka EC, Fondufe-Mittendorf Y. PARP1 Regulates Circular RNA Biogenesis though Control of Transcriptional Dynamics. Cells 2023; 12:1160. [PMID: 37190069 PMCID: PMC10136798 DOI: 10.3390/cells12081160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/03/2023] [Accepted: 04/13/2023] [Indexed: 05/17/2023] Open
Abstract
Circular RNAs (circRNAs) are a recently discovered class of RNAs derived from protein-coding genes that have important biological and pathological roles. They are formed through backsplicing during co-transcriptional alternative splicing; however, the unified mechanism that accounts for backsplicing decisions remains unclear. Factors that regulate the transcriptional timing and spatial organization of pre-mRNA, including RNAPII kinetics, the availability of splicing factors, and features of gene architecture, have been shown to influence backsplicing decisions. Poly (ADP-ribose) polymerase I (PARP1) regulates alternative splicing through both its presence on chromatin as well as its PARylation activity. However, no studies have investigated PARP1's possible role in regulating circRNA biogenesis. Here, we hypothesized that PARP1's role in splicing extends to circRNA biogenesis. Our results identify many unique circRNAs in PARP1 depletion and PARylation-inhibited conditions compared to the wild type. We found that while all genes producing circRNAs share gene architecture features common to circRNA host genes, genes producing circRNAs in PARP1 knockdown conditions had longer upstream introns than downstream introns, whereas flanking introns in wild type host genes were symmetrical. Interestingly, we found that the behavior of PARP1 in regulating RNAPII pausing is distinct between these two classes of host genes. We conclude that the PARP1 pausing of RNAPII works within the context of gene architecture to regulate transcriptional kinetics, and therefore circRNA biogenesis. Furthermore, this regulation of PARP1 within host genes acts to fine tune their transcriptional output with implications in gene function.
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Affiliation(s)
- Rebekah Eleazer
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40536, USA; (R.E.); (Z.J.)
- Department of Epigenetics, Van Andel Institute, Grand Rapids, MI 49503, USA;
| | - Kalpani De Silva
- Department of Neuroscience Training, University of Louisville, Louisville, KY 40292, USA; (K.D.S.); (K.A.)
- Kentucky IDeA Networks of Biomedical Research Excellence Bioinformatics Core, University of Louisville, Louisville, KY 40292, USA;
| | - Kalina Andreeva
- Department of Neuroscience Training, University of Louisville, Louisville, KY 40292, USA; (K.D.S.); (K.A.)
- Kentucky IDeA Networks of Biomedical Research Excellence Bioinformatics Core, University of Louisville, Louisville, KY 40292, USA;
| | - Zoe Jenkins
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40536, USA; (R.E.); (Z.J.)
| | - Nour Osmani
- Department of Epigenetics, Van Andel Institute, Grand Rapids, MI 49503, USA;
| | - Eric C. Rouchka
- Kentucky IDeA Networks of Biomedical Research Excellence Bioinformatics Core, University of Louisville, Louisville, KY 40292, USA;
- Department of Biochemistry and Molecular Genetics, University of Louisville, Louisville, KY 40202, USA
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Yuan L, Chen W, Xiang J, Deng Q, Hu Y, Li J. Advances of circRNA-miRNA-mRNA regulatory network in cerebral ischemia/reperfusion injury. Exp Cell Res 2022; 419:113302. [PMID: 35987381 DOI: 10.1016/j.yexcr.2022.113302] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 07/26/2022] [Accepted: 07/28/2022] [Indexed: 11/04/2022]
Abstract
Ischemic stroke (IS) is the most common type of stroke, and its pathophysiological process is more complex. In recent years, the key regulatory roles of non-coding RNA (miRNA, circRNA) and mRNA in the development of IS have attracted more attention. In the process of cerebral ischemia/reperfusion injury, circRNA can regulate nerves, blood vessels and immune system through miRNA/mRNA axis, so as to affect the neurovascular unit of IS. The combination of these noncoding RNAs and mRNAs can be used as non-invasive biomarkers and therapeutic tools for IS diagnosis, prognosis and brain injury. Therefore, it is very important to study the potential molecular mechanism, activation pathway and treatment methods of circRNA/miRNA/mRNA network in IS. This review will focus on the latest progress of circRNA/miRNA/mRNA regulatory network, we have also included some circRNAs, which does not mediate through a miRNA, so we also include circRNA -mRNA network. And explore the application prospect of these RNAs as potential therapeutic targets in the prevention and treatment of IS.
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Affiliation(s)
- Li Yuan
- Guangxi University of Chinese Medicine, Nanning, 530001, Guangxi, China
| | - Wei Chen
- The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, 530022, Guangxi, China
| | - Junjun Xiang
- Guangxi University of Chinese Medicine, Nanning, 530001, Guangxi, China
| | - Qiumei Deng
- Guangxi University of Chinese Medicine, Nanning, 530001, Guangxi, China
| | - Yueqiang Hu
- The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, 530022, Guangxi, China
| | - Junhong Li
- The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, 530022, Guangxi, China.
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He J, Xiao P, Chen C, Zhu Z, Zhang J, Deng L. GCNCMI: A Graph Convolutional Neural Network Approach for Predicting circRNA-miRNA Interactions. Front Genet 2022; 13:959701. [PMID: 35991563 PMCID: PMC9389118 DOI: 10.3389/fgene.2022.959701] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 06/23/2022] [Indexed: 11/18/2022] Open
Abstract
The interactions between circular RNAs (circRNAs) and microRNAs (miRNAs) have been shown to alter gene expression and regulate genes on diseases. Since traditional experimental methods are time-consuming and labor-intensive, most circRNA-miRNA interactions remain largely unknown. Developing computational approaches to large-scale explore the interactions between circRNAs and miRNAs can help bridge this gap. In this paper, we proposed a graph convolutional neural network-based approach named GCNCMI to predict the potential interactions between circRNAs and miRNAs. GCNCMI first mines the potential interactions of adjacent nodes in the graph convolutional neural network and then recursively propagates interaction information on the graph convolutional layers. Finally, it unites the embedded representations generated by each layer to make the final prediction. In the five-fold cross-validation, GCNCMI achieved the highest AUC of 0.9312 and the highest AUPR of 0.9412. In addition, the case studies of two miRNAs, hsa-miR-622 and hsa-miR-149-5p, showed that our model has a good effect on predicting circRNA-miRNA interactions. The code and data are available at https://github.com/csuhjhjhj/GCNCMI.
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Affiliation(s)
- Jie He
- School of Computer Science and Engineering, Central South University, Changsha, China
| | - Pei Xiao
- School of Computer Science and Engineering, Central South University, Changsha, China
| | - Chunyu Chen
- School of Computer Science and Engineering, Central South University, Changsha, China
| | - Zeqin Zhu
- School of Computer Science and Engineering, Central South University, Changsha, China
| | - Jiaxuan Zhang
- Department of Electrical Engineering, University of California, San Diego, San Diego, CA, United States
| | - Lei Deng
- School of Computer Science and Engineering, Central South University, Changsha, China
- *Correspondence: Lei Deng,
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Liu F, Li R, Zhang R, He M, Zhang Y. Knockdown of circNRIP1 sensitizes colorectal cancer to 5‑FU via sponging miR‑532‑3p. Oncol Rep 2021; 46:218. [PMID: 34396434 PMCID: PMC8377465 DOI: 10.3892/or.2021.8169] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 07/29/2021] [Indexed: 12/28/2022] Open
Abstract
The present study aimed to investigate the influence of circular RNA nuclear receptor‑interacting protein 1 (circNRIP1) on the chemotherapeutic effect of 5‑fluorouracil (5‑FU) in colorectal cancer (CRC) and reveal its potential molecular mechanisms. The effects of circNRIP1 on cell proliferation, migration and invasion, and apoptosis were evaluated using Cell Counting Kit‑8, Transwell and flow cytometric assays, respectively. A dual‑luciferase reporter assay was performed to verify the potential interaction between circNRIP1 and microRNA (miR)‑532‑3p. The results of the present study indicated that circNRIP1 was upregulated in CRC and its increased expression was associated with CRC progression. Furthermore, overexpression of circNRIP1 promoted CRC cell proliferation, invasion and migration, while it inhibited apoptosis. Knockdown of circNRIP1 significantly enhanced the 5‑FU‑induced inhibition of the viability of HCT116 and SW480 cells. Bioinformatics analysis predicted that miR‑532‑3p was a direct target of circNRIP1, which was further confirmed by a dual‑luciferase reporter assay. miR‑532‑3p silencing reversed the effects of circNRIP1 knockdown on the sensitivity of 5‑FU in the chemotherapy of CRC. The results suggested that circNRIP1 and miR‑532‑3p may be utilized to improve the diagnosis of CRC and serve as diagnostic markers. In conclusion, overexpression of circNRIP1 promoted the progression of CRC, while circNRIP1 silencing sensitized CRC cells to 5‑FU via sponging miR‑532‑3p.
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Affiliation(s)
- Fanfan Liu
- Department of Clinical Pharmacy, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450007, P.R. China
| | - Ruijia Li
- Department of Pharmacy, The Eighth Hospital of Xi'an, Xi'an, Shanxi 710061, P.R. China
| | - Rui Zhang
- Department of Critical Care Medicine, Shaanxi Provincial Cancer Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an, Shanxi 710061, P.R. China
| | - Meng He
- Department of Clinical Pharmacy, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450007, P.R. China
| | - Yueli Zhang
- Department of Clinical Pharmacy, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450007, P.R. China
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Rolling-circle and strand-displacement mechanisms for non-enzymatic RNA replication at the time of the origin of life. J Theor Biol 2021; 527:110822. [PMID: 34214567 DOI: 10.1016/j.jtbi.2021.110822] [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] [Received: 02/18/2021] [Revised: 06/11/2021] [Accepted: 06/26/2021] [Indexed: 11/21/2022]
Abstract
It is likely that RNA replication began non-enzymatically, and that polymerases were later selected to speed up the process. We consider replication mechanisms in modern viruses and ask which of these is possible non-enzymatically, using mathematical models and experimental data found in the literature to estimate rates of RNA synthesis and replication. Replication via alternating plus and minus strands is found in some single-stranded RNA viruses. However, if this occurred non-enzymatically it would lead to double-stranded RNA that would not separate. With some form of environmental cycling, such as temperature, salinity, or pH cycling, double-stranded RNA can be melted to form single-stranded RNA, although re-annealing of existing strands would then occur much faster than synthesis of new strands. We show that re-annealing blocks this form of replication at a very low concentration of strands. Other kinds of viruses synthesize linear double strands from single strands and then make new single strands from double strands via strand-displacement. This does not require environmental cycling and is not blocked by re-annealing. However, under non-enzymatic conditions, if strand-displacement occurs from a linear template, we expect the incomplete new strand to be almost always displaced by the tail end of the old strand through toehold-mediated displacement. A third kind of replication in viruses and viroids is rolling-circle replication which occurs via strand-displacement on a circular template. Rolling-circle replication does not require environmental cycling and is not prevented by toehold-mediated displacement. Rolling-circle replication is therefore expected to occur non-enzymatically and is a likely starting point for the evolution of polymerase-catalysed replication.
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Liao HX, Zhang ZH, Chen HL, Huang YM, Liu ZL, Huang J. CircHYBID regulates hyaluronan metabolism in chondrocytes via hsa-miR-29b-3p/TGF-β1 axis. Mol Med 2021; 27:56. [PMID: 34058990 PMCID: PMC8165762 DOI: 10.1186/s10020-021-00319-x] [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: 10/26/2020] [Accepted: 05/25/2021] [Indexed: 12/12/2022] Open
Abstract
Background Hyaluronan (HA) metabolism by chondrocytes is important for cartilage development and homeostasis. However, information about the function of circular RNAs (circRNAs) in HA metabolism is limited. We therefore profiled the role of the novel HA-related circRNA circHYBID in the progression of osteoarthritis (OA). Methods CircHYBID function in HA metabolism in chondrocytes was investigated using gain-of-function experiments, and circHYBID mechanism was confirmed via bioinformatics analysis and luciferase assays. The expression of circHYBID–hsa-miR-29b-3p–transforming growth factor (TGF)-β1 axis was examined by quantitative real-time polymerase chain reaction (qRT-PCR) and Western blotting. CircHYBID, TGF-β1, and HA levels in cartilage samples were evaluated using qRT-PCR and pathological examination. Enzyme-linked immunosorbent assay was used to assess HA accumulation in chondrocyte supernatant. Results CircHYBID expression was significantly downregulated in damaged cartilage samples compared with that in the corresponding intact cartilage samples. CircHYBID expression was positively correlated with alcian blue score. Interleukin-1β stimulation in chondrocytes downregulated circHYBID expression and decreased HA accumulation. Gain-of-function experiments revealed that circHYBID overexpression in chondrocytes increased HA accumulation by regulating HA synthase 2 and HYBID expression. Further mechanism analysis showed that circHYBID upregulated TGF-β1 expression by sponging hsa-miR-29b-3p. Conclusions Our results describe a novel HA-related circRNA that could promote HA synthesis and accumulation. The circHYBID–hsa-miR-29b-3p–TGF-β1 axis may play a powerful regulatory role in HA metabolism and OA progression. Thus, these findings will provide new perspectives for studies on OA pathogenesis, and circHYBID may serve as a potential target for OA therapy. Supplementary Information The online version contains supplementary material available at 10.1186/s10020-021-00319-x.
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Affiliation(s)
- Hong-Xing Liao
- Orthopedic Center, Meizhou People's Hospital, Huangtang Road No.63, Meizhou, 514000, Guangdong, People's Republic of China.
| | - Zhi-Hui Zhang
- Orthopedic Center, Meizhou People's Hospital, Huangtang Road No.63, Meizhou, 514000, Guangdong, People's Republic of China
| | - Hui-Lin Chen
- Orthopedic Center, Meizhou People's Hospital, Huangtang Road No.63, Meizhou, 514000, Guangdong, People's Republic of China
| | - Ying-Mei Huang
- Orthopedic Center, Meizhou People's Hospital, Huangtang Road No.63, Meizhou, 514000, Guangdong, People's Republic of China
| | - Zhan-Liang Liu
- Orthopedic Center, Meizhou People's Hospital, Huangtang Road No.63, Meizhou, 514000, Guangdong, People's Republic of China
| | - Jian Huang
- Orthopedic Center, Meizhou People's Hospital, Huangtang Road No.63, Meizhou, 514000, Guangdong, People's Republic of China
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Circular RNA Expression Profiles in Plasma from Patients with Heart Failure Related to Platelet Activity. Biomolecules 2020; 10:biom10020187. [PMID: 31991759 PMCID: PMC7072558 DOI: 10.3390/biom10020187] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 01/23/2020] [Indexed: 12/17/2022] Open
Abstract
Heart failure (HF) is a deadly disease that is difficult to accurately diagnose. Circular RNAs (circRNAs) are a novel class of noncoding RNAs that might play important roles in many cardiovascular diseases. However, their role in HF remains unclear. CircRNA microarrays were performed on plasma samples obtained from three patients with HF and three healthy controls. The profiling results were validated by quantitative reverse transcription polymerase chain reaction. The diagnostic value of circRNAs for HF was evaluated by receiver operating characteristic (ROC) curves. The expression profiles indicated that 477 circRNAs were upregulated and 219 were downregulated in the plasma of patients with HF compared with healthy controls. Among the dysregulated circRNAs, hsa_circ_0112085 (p = 0.0032), hsa_circ_0062960 (p = 0.0006), hsa_circ_0053919 (p = 0.0074) and hsa_circ_0014010 (p = 0.025) showed significantly higher expression in patients with HF compared with healthy controls. The area under the ROC curve for hsa_circ_0062960 for HF diagnosis was 0.838 (p < 0.0001). Correlation analysis showed that the expression of hsa_circ_0062960 was highly correlated with B-type natriuretic peptide (BNP) serum levels. Some differential circRNAs were found to be related to platelet activity by Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses. The landscape of circRNA expression profiles may play a role in HF pathogenesis and improve our understanding of platelet function in HF. Moreover, hsa_circ_0062960 has potential as a novel diagnostic biomarker for HF.
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Zhang X, Wang S, Wang H, Cao J, Huang X, Chen Z, Xu P, Sun G, Xu J, Lv J, Xu Z. Circular RNA circNRIP1 acts as a microRNA-149-5p sponge to promote gastric cancer progression via the AKT1/mTOR pathway. Mol Cancer 2019; 18:20. [PMID: 30717751 PMCID: PMC6360801 DOI: 10.1186/s12943-018-0935-5] [Citation(s) in RCA: 537] [Impact Index Per Article: 107.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 12/27/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND CircRNA has emerged as a new non-coding RNA that plays crucial roles in tumour initiation and development. 'MiRNA sponge' is the most reported role played by circRNAs in many tumours. The AKT/mTOR axis is a classic signalling pathway in cancers that sustains energy homeostasis through energy production activities, such as the Warburg effect, and blocks catabolic activities, such as autophagy. Additionally, the AKT/mTOR axis exerts a positive effect on EMT, which promotes tumour metastasis. METHODS We detected higher circNRIP1 expression in gastric cancer by performing RNA-seq analysis. We verified the tumour promotor role of circNRIP1 in gastric cancer cells through a series of biological function assays. We then used a pull-down assay and dual-luciferase reporter assay to identify the downstream miR-149-5p of circNRIP1. Western blot analysis and immunofluorescence assays were performed to demonstrate that the circNRIP1-miR-149-5p-AKT1/mTOR axis is responsible for the altered metabolism in GC cells and promotes GC development. We then adopted a co-culture system to trace circNRIP1 transmission via exosomal communication and RIP experiments to determine that quaking regulates circNRIP1 expression. Finally, we confirmed the tumour suppressor role of microRNA-133a-3p in vivo in PDX mouse models. RESULTS We discovered that knockdown of circNRIP1 successfully blocked proliferation, migration, invasion and the expression level of AKT1 in GC cells. MiR-149-5p inhibition phenocopied the overexpression of circNRIP1 in GC cells, and overexpression of miR-149-5p blocked the malignant behaviours of circNRIP1. Moreover, it was proven that circNRIP1 can be transmitted by exosomal communication between GC cells, and exosomal circNRIP1 promoted tumour metastasis in vivo. We also demonstrated that quaking can promote circNRIP1 transcription. In the final step, the tumour promotor role of circNRIP1 was verified in PDX models. CONCLUSIONS We proved that circNRIP1 sponges miR-149-5p to affect the expression level of AKT1 and eventually acts as a tumour promotor in GC.
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Affiliation(s)
- Xing Zhang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, No.300, Guangzhou Road, Nanjing, Jiangsu Province, China
| | - Sen Wang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, No.300, Guangzhou Road, Nanjing, Jiangsu Province, China
| | - Haixiao Wang
- Department of General Surgery, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, 223300, Jiangsu, China
| | - Jiacheng Cao
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, No.300, Guangzhou Road, Nanjing, Jiangsu Province, China
| | - Xiaoxu Huang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, No.300, Guangzhou Road, Nanjing, Jiangsu Province, China
| | - Zheng Chen
- Department of Surgical Oncology, University of Miami, Miami, USA
| | - Penghui Xu
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, No.300, Guangzhou Road, Nanjing, Jiangsu Province, China
| | - Guangli Sun
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, No.300, Guangzhou Road, Nanjing, Jiangsu Province, China
| | - Jianghao Xu
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, No.300, Guangzhou Road, Nanjing, Jiangsu Province, China
| | - Jialun Lv
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, No.300, Guangzhou Road, Nanjing, Jiangsu Province, China
| | - Zekuan Xu
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, No.300, Guangzhou Road, Nanjing, Jiangsu Province, China.
- Collaborative Innovation Center For Cancer Personalized Medicine, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, China.
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Wang Y, Lu T, Wang Q, Liu J, Jiao W. Circular RNAs: Crucial regulators in the human body (Review). Oncol Rep 2018; 40:3119-3135. [PMID: 30272328 PMCID: PMC6196641 DOI: 10.3892/or.2018.6733] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Accepted: 09/07/2018] [Indexed: 12/14/2022] Open
Abstract
Circular RNAs (circRNAs) belong to a new type of endogenous non‑coding RNAs (ncRNAs) that are derived from exons and/or introns, and are widely distributed in mammals. The majority of circRNAs have a specific expression profile in cells or tissues, as well as during different stages of development. CircRNAs were originally thought to be the products of mis‑splicing. However, with the assistance of bioinformatics tools and the rapid development of high‑throughput sequencing, an increasing body of evidence has suggested that circRNAs bind micro(mi)RNAs, and have a role as miRNA sponges, thereby regulating target mRNA splicing and transcription. Human diseases are closely associated with circRNAs, especially in cancer as their expression is typically altered during the progression of cancer; this may provide a novel type of biomarker for cancer diagnosis and prognosis. CircRNAs are becoming a key area of interest within the field of cancer research. In the present review, we summarize the known molecular mechanisms and biological origin of circRNAs, as well as their functions, especially those related to human tumors.
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Affiliation(s)
- Yuanyong Wang
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, Qingdao 266003, P.R. China
| | - Tong Lu
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, Qingdao 266003, P.R. China
| | - Qian Wang
- College of Nursing, Weifang Medical University, Weifang 261053, P.R. China
| | - Jia Liu
- School of Pharmacy, Qingdao University, Qingdao 266003, P.R. China
| | - Wenjie Jiao
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, Qingdao 266003, P.R. China
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