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Sharma NK, Dwivedi P, Bhushan R, Maurya PK, Kumar A, Dakal TC. Engineering circular RNA for molecular and metabolic reprogramming. Funct Integr Genomics 2024; 24:117. [PMID: 38918231 DOI: 10.1007/s10142-024-01394-z] [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: 04/28/2024] [Revised: 06/10/2024] [Accepted: 06/17/2024] [Indexed: 06/27/2024]
Abstract
The role of messenger RNA (mRNA) in biological systems is extremely versatile. However, it's extremely short half-life poses a fundamental restriction on its application. Moreover, the translation efficiency of mRNA is also limited. On the contrary, circular RNAs, also known as circRNAs, are a common and stable form of RNA found in eukaryotic cells. These molecules are synthesized via back-splicing. Both synthetic circRNAs and certain endogenous circRNAs have the potential to encode proteins, hence suggesting the potential of circRNA as a gene expression machinery. Herein, we aim to summarize all engineering aspects that allow exogenous circular RNA (circRNA) to prolong the time that proteins are expressed from full-length RNA signals. This review presents a systematic engineering approach that have been devised to efficiently assemble circRNAs and evaluate several aspects that have an impact on protein production derived from. We have also reviewed how optimization of the key components of circRNAs, including the topology of vector, 5' and 3' untranslated sections, entrance site of the internal ribosome, and engineered aptamers could be efficiently impacting the translation machinery for molecular and metabolic reprogramming. Collectively, molecular and metabolic reprogramming present a novel way of regulating distinctive cellular features, for instance growth traits to neoplastic cells, and offer new possibilities for therapeutic inventions.
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Affiliation(s)
- Narendra Kumar Sharma
- Department of Bioscience and Biotechnology, Banasthali Vidyapith (Deemed University), P.O. Banasthali Vidyapith Distt. Tonk, Rajasthan, 304 022, India.
| | - Pragya Dwivedi
- Department of Bioscience and Biotechnology, Banasthali Vidyapith (Deemed University), P.O. Banasthali Vidyapith Distt. Tonk, Rajasthan, 304 022, India
| | - Ravi Bhushan
- Department of Zoology, M.S. College, Motihari, Bihar, India
| | - Pawan Kumar Maurya
- Department of Biochemistry, Central University of Haryana, Mahendergarh, 123031, Haryana, India
| | - Abhishek Kumar
- Institute of Bioinformatics, International Technology Park, Bangalore, 560066, Karnataka, India
- Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Tikam Chand Dakal
- Genome and Computational Biology Lab, Department of Biotechnology, Mohanlal Sukhadia University, Udaipur, Rajasthan, 313001, India.
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Hwang HJ, Kim YK. Molecular mechanisms of circular RNA translation. Exp Mol Med 2024; 56:1272-1280. [PMID: 38871818 PMCID: PMC11263353 DOI: 10.1038/s12276-024-01220-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 02/22/2024] [Accepted: 02/23/2024] [Indexed: 06/15/2024] Open
Abstract
Circular RNAs (circRNAs) are covalently closed single-stranded RNAs without a 5' cap structure and a 3' poly(A) tail typically present in linear mRNAs of eukaryotic cells. CircRNAs are predominantly generated through a back-splicing process within the nucleus. CircRNAs have long been considered non-coding RNAs seemingly devoid of protein-coding potential. However, many recent studies have challenged this idea and have provided substantial evidence that a subset of circRNAs can associate with polysomes and indeed be translated. Therefore, in this review, we primarily highlight the 5' cap-independent internal initiation of translation that occurs on circular RNAs. Several molecular features of circRNAs, including the internal ribosome entry site, N6-methyladenosine modification, and the exon junction complex deposited around the back-splicing junction after back-splicing event, play pivotal roles in their efficient internal translation. We also propose a possible relationship between the translatability of circRNAs and their stability, with a focus on nonsense-mediated mRNA decay and nonstop decay, both of which are well-characterized mRNA surveillance mechanisms. An in-depth understanding of circRNA translation will reshape and expand our current knowledge of proteomics.
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Affiliation(s)
- Hyun Jung Hwang
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Yoon Ki Kim
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea.
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Wu L, Zhang Y, Ren J. Targeting non-coding RNAs and N 6-methyladenosine modification in hepatocellular carcinoma. Biochem Pharmacol 2024; 223:116153. [PMID: 38513741 DOI: 10.1016/j.bcp.2024.116153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 03/08/2024] [Accepted: 03/18/2024] [Indexed: 03/23/2024]
Abstract
Hepatocellular carcinoma (HCC), the most common form of primary liver cancers, accounts for a significant portion of cancer-related death globally. However, the molecular mechanisms driving the onset and progression of HCC are still not fully understood. Emerging evidence has indicated that non-protein-coding regions of genomes could give rise to transcripts, termed non-coding RNA (ncRNA), forming novel functional driving force for aberrant cellular activity. Over the past decades, overwhelming evidence has denoted involvement of a complex array of molecular function of ncRNAs at different stages of HCC tumorigenesis and progression. In this context, several pre-clinical studies have highlighted the potentials of ncRNAs as novel therapeutic modalities in the management of human HCC. Moreover, N6-methyladenosine (m6A) modification, the most prevalent form of internal mRNA modifications in mammalian cells, is essential for the governance of biological processes within cells. Dysregulation of m6A in ncRNAs has been implicated in human carcinogenesis, including HCC. In this review, we will discuss dysregulation of several hallmark ncRNAs (miRNAs, lncRNAs, and circRNAs) in HCC and address the latest advances for their involvement in the onset and progression of HCC. We also focus on dysregulation of m6A modification and various m6A regulators in the etiology of HCC. In the end, we discussed the contemporary preclinical and clinical application of ncRNA-based and m6A-targeted therapies in HCC.
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Affiliation(s)
- Lin Wu
- Department of Cardiology and Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital Fudan University, Shanghai 200032, China; National Clinical Research Center for Interventional Medicine, Shanghai 200032, China
| | - Yingmei Zhang
- Department of Cardiology and Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital Fudan University, Shanghai 200032, China; National Clinical Research Center for Interventional Medicine, Shanghai 200032, China
| | - Jun Ren
- Department of Cardiology and Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital Fudan University, Shanghai 200032, China; National Clinical Research Center for Interventional Medicine, Shanghai 200032, China.
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Zahin T, Shi Q, Zang XC, Shao M. Accurate Assembly of Circular RNAs with TERRACE. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.09.579380. [PMID: 38370635 PMCID: PMC10871327 DOI: 10.1101/2024.02.09.579380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Circular RNA (circRNA) is a class of RNA molecules that forms a closed loop with its 5' and 3' ends covalently bonded. Due to this specific structure circRNAs are more stable than linear RNAs, admit distinct biological properties and functions, and have been proven to be promising biomarkers. Circular RNAs were severely overlooked previously owing to the biases in the RNA-seq protocols and in the detection algorithms, but recently gained tremendous attentions in both aspects. However, most existing methods for assembling circRNAs heavily rely on the annotated transcriptomes, and hence exhibit unsatisfactory accuracy when a high-quality transcriptome is unavailable. Here we present TERRACE, a new algorithm for full-length assembly of circRNAs from paired-end total RNA-seq data. TERRACE uses the splice graph as the underlying data structure to organize the splicing and coverage information. We transform the problem of assembling circRNAs into finding two paths that "bridge" the three fragments in the splice graph induced by back-spliced reads. To solve this formulation, we adopted a definition for optimal bridging paths and a dynamic programming algorithm to calculate such paths, an approach that was proven useful for assembling linear RNAs. TERRACE features an efficient algorithm to detect back-spliced reads that are missed by RNA-seq aligners, contributing to its much improved sensitivity. It also incorporates a new machine-learning approach that is trained to assign a confidence score to each assembled circRNA, which is shown superior to using abundance for scoring. TERRACE is compared with leading circRNA detection methods on both simulations and biological datasets. Our method consistently outperforms by a large margin in sensitivity while maintaining better or comparable precision. In particular, when the annotations are not provided, TERRACE can assemble 123%-412% more correct circRNAs than state-of-the-art methods on human tissues. TERRACE presents a major leap on assembling full-length circRNAs from RNA-seq data, and we expect it to be widely used in the downstream research on circRNAs.
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Affiliation(s)
- Tasfia Zahin
- Department of Computer Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Qian Shi
- Department of Computer Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Xiaofei Carl Zang
- Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA
| | - Mingfu Shao
- Department of Computer Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA
- Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA
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Chu S, Fei B, Yu M. Molecular Mechanism of Circ_0088300-BOLL Interaction Regulating Mitochondrial Metabolic Reprogramming and Involved in Gastric Cancer Growth and Metastasis. J Proteome Res 2023; 22:3793-3810. [PMID: 37953520 DOI: 10.1021/acs.jproteome.3c00476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
This study aims to investigate the effect and molecular mechanism of the interaction between circRNA circ_0088300 and the RNA binding protein (RBP) BOLL on the growth and metastasis of gastric cancer. A prognostic risk model was established by screening differentially expressed RBP genes from the TCGA database, and BOLL was identified as a critical RBP. Gene Set Enrichment analysis (GSEA) showed that BOLL was associated with mitochondrial function. The upregulation fold change of circ_0088300 was the highest in the GSE93541 data set, and the RPISeq database confirmed its binding relationship with BOLL. In vitro experiments showed that BOLL regulates mitochondrial metabolism and cancer cell function and circ_0088300 upregulates the expression level of BOLL. In vivo experiments demonstrated that knocking down circ_0088300 can inhibit tumor growth and metastasis, whereas overexpression of BOLL can reverse this effect. In conclusion, we have reached a preliminary conclusion that upregulation of BOLL by circ_0088300 promotes gastric cancer growth and metastasis by promoting mitochondrial metabolic reprogramming.
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Affiliation(s)
- Songtao Chu
- Department of Forensic Medicine of Basic Medical College, Beihua University, Jilin 132013, P.R. China
| | - Bingyuan Fei
- Department of Gastrointestinal Colorectal and Anal. Surgery, the Third Bethune Hospital of Jilin University, Changchun 130000, Jilin Province, P.R. China
| | - Miao Yu
- Department of Gastrointestinal Colorectal and Anal. Surgery, the Third Bethune Hospital of Jilin University, Changchun 130000, Jilin Province, P.R. China
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Chen Y, Zhou H, Wu H, Lu W, He Y. Abnormal Fetal Lung of Hoxa1 -/- Piglets Is Rescued by Maternal Feeding with All-Trans Retinoic Acid. Animals (Basel) 2023; 13:2850. [PMID: 37760250 PMCID: PMC10525738 DOI: 10.3390/ani13182850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/01/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023] Open
Abstract
Neonatal Hoxa1-/- piglets were characterized by dyspnea owing to the Hoxa1 mutation, and maternal administration with ATRA alleviated the dyspnea of neonatal Hoxa1-/- piglets. The purpose of this experiment was to explore how maternal ATRA administration rescued the abnormal fetal lungs of Hoxa1-/- piglets. Samples of the lungs were collected from neonatal Hoxa1-/- and non-Hoxa1-/- piglets delivered by sows in the control group, and from neonatal Hoxa1-/- piglets born by sows administered with ATRA at 4 mg/kg body weight on dpc 12, 13, or 14, respectively. These were used for the analysis of ELISA, histological morphology, immunofluorescence staining, immunohistochemistry staining, and quantitative real-time PCR. The results indicate that the Hoxa1 mutation had adverse impacts on the development of the alveoli and pulmonary microvessels of Hoxa1-/- piglets. Maternal administration with ATRA at 4 mg/kg body weight on dpc 14 rescued the abnormal lung development of Hoxa1-/- piglets by increasing the IFN-γ concentration (p < 0.05), airspace area (p < 0.01) and pulmonary microvessel density (p < 0.01); increasing the expression of VEGFD (p < 0.01), PDGFD (p < 0.01), KDR (p < 0.01), ID1 (p < 0.01), and NEDD4 (p < 0.01); and decreasing the septal wall thickness (p < 0.01) and the expression of SFTPC (p < 0.01) and FOXO3 (p < 0.01). Maternal administration with ATRA plays a vital role in rescuing the abnormal development of lung of Hoxa1-/- fetal piglets.
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Affiliation(s)
- Yixin Chen
- Jiangxi Province Key Laboratory of Animal Nutrition, Engineering Research Center of Feed Development, Jiangxi Agricultural University, Nanchang 330045, China; (Y.C.); (W.L.)
- Department of Animal Science, Ganzhou Polytechnic, Ganzhou 341000, China
| | - Haimei Zhou
- Department of Animal Science, Jiangxi Agricultural Engineering College, Zhangshu 331200, China;
| | - Huadong Wu
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China;
| | - Wei Lu
- Jiangxi Province Key Laboratory of Animal Nutrition, Engineering Research Center of Feed Development, Jiangxi Agricultural University, Nanchang 330045, China; (Y.C.); (W.L.)
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China;
| | - Yuyong He
- Jiangxi Province Key Laboratory of Animal Nutrition, Engineering Research Center of Feed Development, Jiangxi Agricultural University, Nanchang 330045, China; (Y.C.); (W.L.)
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China;
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Abdollahi E, Mozdarani H, Alizadeh BZ. Role of circ-FOXO3 and miR-23a in radiosensitivity of breast cancer. Breast Cancer 2023; 30:714-726. [PMID: 37222952 DOI: 10.1007/s12282-023-01463-4] [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: 11/28/2022] [Accepted: 04/25/2023] [Indexed: 05/25/2023]
Abstract
Identifying the radiosensitivity of cells before radiotherapy (RT) in breast cancer (BC) patients allows appropriate switching between routinely used treatment regimens and reduces adverse side effects in exposed patients. In this study, blood was collected from 60 women diagnosed with Invasive Ductal Carcinoma (IDC) BC and 20 healthy women. To predict cellular radiosensitivity, a standard G2-chromosomal assay was performed. From these 60 samples, 20 BC patients were found to be radiosensitive based on the G2 assay. Therefore, molecular studies were finally performed on two equal groups (20 samples each) of patients with and without cellular radiosensitivity. QPCR was performed to examine the expression levels of circ-FOXO3 and miR-23a in peripheral blood mononuclear cells (PBMCs) and RNA sensitivity and specificity were determined by plotting Receiver Operating Characteristic (ROC) curves. Binary logistic regression was performed to identify RNA involvement in BC and cellular radiosensitivity (CR) in BC patients. Meanwhile, qPCR was used to compare differential RNA expression in the radiosensitive MCF-7 and radioresistant MDA-MB-231 cell lines. An annexin -V FITC/PI binding assay was used to measure cell apoptosis 24 and 48 h after 2 Gy, 4 Gy, and 8 Gy gamma-irradiation. Results indicated that circ-FOXO3 was downregulated and miR-23a was upregulated in BC patients. RNA expression levels were directly associated with CR. Cell line results showed that circ-FOXO3 overexpression induced apoptosis in the MCF-7 cell line and miR-23a overexpression inhibited apoptosis in the MDA-MB-231 cell line. Evaluation of the ROC curves revealed that both RNAs had acceptable specificity and sensitivity in predicting CR in BC patients. Binary logistic regression showed that both RNAs were also successful in predicting breast cancer. Although only circ-FOXO3 has been shown to predict CR in BC patients, circ-FOXO3 may function as a tumor suppressor and miR-23a may function as oncomiR in BC. Circ-FOXO3 and miR-23a may be promising potential biomarkers for BC prediction. Furthermore, Circ-FOXO3 could be a potential biomarker for predicting CR in BC patients.
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Affiliation(s)
- Elahe Abdollahi
- Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Hossein Mozdarani
- Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
| | - Behrooz Z Alizadeh
- Unit of Personalized Medicine, Department of Epidemiology, University Medical Center Groningen, Groningen, The Netherlands
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Wang MN, Xie XJ, You ZH, Wong L, Li LP, Chen ZH. Combining K Nearest Neighbor With Nonnegative Matrix Factorization for Predicting Circrna-Disease Associations. IEEE/ACM TRANSACTIONS ON COMPUTATIONAL BIOLOGY AND BIOINFORMATICS 2023; 20:2610-2618. [PMID: 35675235 DOI: 10.1109/tcbb.2022.3180903] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Accumulating evidences show that circular RNAs (circRNAs) play an important role in regulating gene expression, and involve in many complex human diseases. Identifying associations of circRNA with disease helps to understand the pathogenesis, treatment and diagnosis of complex diseases. Since inferring circRNA-disease associations by biological experiments is costly and time-consuming, there is an urgently need to develop a computational model to identify the association between them. In this paper, we proposed a novel method named KNN-NMF, which combines K nearest neighbors with nonnegative matrix factorization to infer associations between circRNA and disease (KNN-NMF). Frist, we compute the Gaussian Interaction Profile (GIP) kernel similarity of circRNA and disease, the semantic similarity of disease, respectively. Then, the circRNA-disease new interaction profiles are established using weight K nearest neighbors to reduce the false negative association impact on prediction performance. Finally, Nonnegative Matrix Factorization is implemented to predict associations of circRNA with disease. The experiment results indicate that the prediction performance of KNN-NMF outperforms the competing methods under five-fold cross-validation. Moreover, case studies of two common diseases further show that KNN-NMF can identify potential circRNA-disease associations effectively.
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Nakamura-García AK, Espinal-Enríquez J. Pseudogenes in Cancer: State of the Art. Cancers (Basel) 2023; 15:4024. [PMID: 37627052 PMCID: PMC10452131 DOI: 10.3390/cancers15164024] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 07/24/2023] [Accepted: 07/26/2023] [Indexed: 08/27/2023] Open
Abstract
Pseudogenes are duplicates of protein-coding genes that have accumulated multiple detrimental alterations, rendering them unable to produce the protein they encode. Initially disregarded as "junk DNA" due to their perceived lack of functionality, research on their biological roles has been hindered by this assumption. Nevertheless, recent focus has shifted towards these molecules due to their abnormal expression in cancer phenotypes. In this review, our objective is to provide a thorough overview of the current understanding of pseudogene formation, the mechanisms governing their expression, and the roles they may play in promoting tumorigenesis.
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Xiong L, Li X, Hua X, Qian Z. Circ-STC2 promotes the ferroptosis of nucleus pulposus cells via targeting miR-486-3p/TFR2 axis. J Orthop Surg Res 2023; 18:518. [PMID: 37480032 PMCID: PMC10362726 DOI: 10.1186/s13018-023-04010-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 07/14/2023] [Indexed: 07/23/2023] Open
Abstract
BACKGROUND Low back pain (LBP) has become the second leading cause of disability worldwide, which has brought great economic burden to people. It is generally believed that intervertebral disc degeneration (IDD) is the main cause of LBP. This study aimed to explore the role of circ-STC2 in the pathogenesis of IDD. METHODS Nucleus pulposus cells (NPCs) were treated with T-Butyl Hydrogen Peroxide (TBHP) to establish IDD model in vitro. RT-qPCR was performed to detect mRNA expressions. The cell viability was detected with CCK-8 assay. The levels of lactate dehydrogenase (LDH), malondialdehyde (MDA), Fe2+ and glutathione (GSH) of NPCs were measured by corresponding kits. The protein expressions were determined by western blot. Dual-luciferase reporter and RNA pull-down assays were conducted to verify the relationship between circ-STC2 or transferrin recepto 2 (TFR2) and miR-486-3p. RESULTS Circ-STC2 and TFR2 expressions were up-regulated in IDD tissues, and miR-486-3p expression was down-regulated. Knockdown of circ-STC2 promoted the cell viability and inhibited the ferroptosis of the NPCs. The GSH levels, and glutathione peroxidase 4 (GPX4) and solute carrier family 7 member 11 (SLC7A11) protein expressions were increased, the LDH, MDA and Fe2+ levels and achaete-scute complexlike 4 (ASCL4) protein expressions were decreased after circ-STC2 knockdown. Knockdown of miR-486-3p abrogated the si-circ-STC2 effects and overexpression of TFR2 reversed the miR-486-3p mimic effects. CONCLUSIONS Circ-STC2 inhibits the cell viability, induced the ferroptosis of the TBHP treated NPCs via targeting miR-486-3p/TFR2 axis.
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Affiliation(s)
- Liangping Xiong
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, 899 Pinghai Road, Suzhou, 215006, Jiangsu, China
- Department of Orthopedic Surgery, The First People's Hospital of Jiande, Hangzhou, China
| | - Xiaoyan Li
- Department of Orthopedic Surgery, Affiliated Hospital of Jining Medical University, Jining, China
| | - Xi Hua
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, 899 Pinghai Road, Suzhou, 215006, Jiangsu, China
| | - Zhonglai Qian
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, 899 Pinghai Road, Suzhou, 215006, Jiangsu, China.
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Lin Z, Ji Y, Zhou J, Li G, Wu Y, Liu W, Li Z, Liu T. Exosomal circRNAs in cancer: Implications for therapy resistance and biomarkers. Cancer Lett 2023; 566:216245. [PMID: 37247772 DOI: 10.1016/j.canlet.2023.216245] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 05/19/2023] [Accepted: 05/22/2023] [Indexed: 05/31/2023]
Abstract
Despite the advances in cancer treatment in recent years, the development of resistance to cancer therapy remains the biggest hurdle towards curative cancer treatments. Therefore, investigating the molecular mechanisms underlying cancer therapy resistance is of paramount clinical importance. Circular RNAs (circRNAs), novel members of the noncoding RNA family, are endogenous biomolecules in eukaryotes characterized by a covalently closed loop structure with multiple biological functions. Significantly, circRNAs are abundant and stable in exosomes and can be packaged, secreted and transferred to targeted tumour cells, thereby modulating diverse hallmarks of cancer behaviours, such as proliferation, migration, and immune escape. Notably, a great number of exosomal circRNAs are abnormally expressed during cancer treatment and can mediate cancer therapy resistance through complex mechanisms; therefore, targeting exosomal circRNAs is a promising therapeutic method to reverse therapy resistance. This review aimed to elucidate the mechanisms underlying exosomal circRNAs controlling the resistance of cancer to common therapies, such as chemotherapy, targeted therapy, immunotherapy and radiotherapy, and we also discussed the therapeutic potential of exosomal circRNAs as clinical biomarkers and novel targets in cancer clinical management. We also discussed the prospects and challenges of targeting exosomal circRNAs as a novel therapeutic strategy for reversing cancer therapy resistance.
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Affiliation(s)
- Zhengjun Lin
- Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, People's Republic of China; Xiangya School of Medicine, Central South University, Changsha, 410013, Hunan, People's Republic of China.
| | - Yuqiao Ji
- Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, People's Republic of China; Xiangya School of Medicine, Central South University, Changsha, 410013, Hunan, People's Republic of China
| | - Jian Zhou
- Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, People's Republic of China
| | - Guoqing Li
- Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, People's Republic of China; Xiangya School of Medicine, Central South University, Changsha, 410013, Hunan, People's Republic of China
| | - Yanlin Wu
- Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, People's Republic of China; Xiangya School of Medicine, Central South University, Changsha, 410013, Hunan, People's Republic of China
| | - Weifeng Liu
- Department of Orthopaedic Oncology Surgery, Beijing Jishuitan Hospital, Peking University, Beijing, 100035, People's Republic of China.
| | - Zhihong Li
- Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, People's Republic of China.
| | - Tang Liu
- Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, People's Republic of China.
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Kamalabadi-Farahani M, Atashi A, Eslami MM. Downregulation of circ-Foxo3 in breast cancer stem-like cells. BMC Res Notes 2023; 16:132. [PMID: 37400900 DOI: 10.1186/s13104-023-06405-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 06/19/2023] [Indexed: 07/05/2023] Open
Abstract
OBJECTIVE Cancer cells having stem cell characteristics are linked to metastasis and relapse in breast cancer. Circ-Foxo3, as a circular RNA, has been linked to the breast cancer lethal traits. This study's objective was to assess circ-Foxo3 expression in breast cancer stem-like cells. After isolation from tumor mass, breast cancer cells were subjected to the reliable in vitro assay of spheroid formation to determine the presence cancer stem cells (CSCs). We used a quantitative real-time polymerase chain reaction to examine circ-Foxo3 expression in spheroids. RESULTS Circ-Foxo3 expression was significantly downregulated in spheroid-forming tumor cells, according to our data. This study demonstrated that breast CSCs have downregulated circ-Foxo3 expression, which may allow these cells to evade apoptosis. A precise analysis of this circRNA's role could be exploited to develop focused therapeutic approaches to fight breast CSCs.
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Affiliation(s)
| | - Amir Atashi
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Mohammad Masoud Eslami
- Department of Hematology, School of Medicine, Tarbiat Modares University (TMU), Tehran, Iran
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Mishra A, Bharti PS, Rani N, Nikolajeff F, Kumar S. A tale of exosomes and their implication in cancer. Biochim Biophys Acta Rev Cancer 2023; 1878:188908. [PMID: 37172650 DOI: 10.1016/j.bbcan.2023.188908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 05/01/2023] [Accepted: 05/05/2023] [Indexed: 05/15/2023]
Abstract
Cancer is a cause of high deaths worldwide and also a huge burden for the health system. Cancer cells have unique properties such as a high rate of proliferation, self-renewal, metastasis, and treatment resistance, therefore, the development of novel diagnoses of cancers is a tedious task. Exosomes are secreted by virtually all cell types and have the ability to carry a multitude of biomolecules crucial for intercellular communication, hence, contributing a crucial part in the onset and spread of cancer. These exosomal components can be utilized in the development of markers for diagnostic and prognostic purposes for various cancers. This review emphasized primarily the following topics: exosomes structure and functions, isolation and characterization strategies of exosomes, the role of exosomal contents in cancer with a focus in particular on noncoding RNA and protein, exosomes, and the cancer microenvironment interactions, cancer stem cells, and tumor diagnosis and prognosis based on exosomes.
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Affiliation(s)
- Abhay Mishra
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Prahalad Singh Bharti
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Neerja Rani
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Fredrik Nikolajeff
- Department of Health, Education, and Technology, Lulea University of Technology, 97187, Sweden
| | - Saroj Kumar
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India; Department of Health, Education, and Technology, Lulea University of Technology, 97187, Sweden.
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Li Y, Wang Z, Ishmael D, Lvy Y. The potential of using non-coding RNAs in forensic science applications. Forensic Sci Res 2023; 8:98-106. [PMID: 37621455 PMCID: PMC10445561 DOI: 10.1093/fsr/owad003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/21/2022] [Accepted: 01/29/2023] [Indexed: 08/26/2023] Open
Abstract
With the continuous development and integration of molecular biology and forensic science, non-coding RNAs (ncRNAs), especially ncRNAs with regulatory functions such as microRNA, long non-coding RNA, and circular RNA, have recently been actively explored by forensic scholars. In this study, we review the literature on these ncRNAs in various fields of forensic science, including postmortem interval determination, wound age estimation, forensic age assessment, cause of death analysis, and body fluid identification, aiming to evaluate the current research and provide a perspective for future applications.
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Affiliation(s)
- Yawen Li
- School of Basic Medical Sciences, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Zhuoqun Wang
- School of Basic Medical Sciences, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Dikeledi Ishmael
- School of Basic Medical Sciences, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Yehui Lvy
- School of Basic Medical Sciences, Shanghai University of Medicine and Health Sciences, Shanghai, China
- Institute of Wound Prevention and Treatment, Shanghai University of Medicine and Health Sciences, Shanghai, China
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15
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Yang L, Lin Y, Wang C, Fan P. circSnd1 promotes atherosclerosis progression through the miR-485-3p/Olr1 signaling pathway. Heliyon 2023; 9:e17366. [PMID: 37426804 PMCID: PMC10329125 DOI: 10.1016/j.heliyon.2023.e17366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 06/07/2023] [Accepted: 06/14/2023] [Indexed: 07/11/2023] Open
Abstract
Background Circular RNAs (circRNAs) participate in the development of atherosclerotic cardiovascular disease. Identifying and verifying the key competing endogenous RNA (ceRNA) network related to atherosclerosis (AS) is significant for understanding the development of AS. The aim of this study was to investigate the circRNA-miRNA‒mRNA network, identify a key circRNA and explore its role in the development of atherosclerosis. Methods Differentially expressed mRNAs (DEMs) and circRNAs (DECs) in the AS model were obtained from datasets in the Gene Expression Omnibus (GEO) database. R software and Cytoscape software were used to construct and visualize the ceRNA network. The dual-luciferase reporter experiment and the RNA pull-down experiment were used to verify the selected ceRNA axis. siRNA targeting circRNA, miRNA mimic, miRNA inhibitor, or gene overexpression plasmid was used for in vitro functional studies. ELISA and western blotting were used to detect inflammation and lipid transport-related proteins. Furthermore, an AS mouse model was established and treated with recombinant adeno-associated viral vectors to further verify the influence of the selected ceRNA axis on the occurrence and/or development of AS. Results A total of 497 DEMs were enriched in 25 pathways, based on which the circ_0082139 (circSnd1)/miR-485-3p/Olr1 axis was selected. In vitro, the interaction among the three molecules of this axis was validated and it was found to affect inflammation and lipid transport, which were characterized by the significant change of inflammatory factors (Il-6, Il-8, Tnf-α, Mcp-1, Vcam-1, and Icam-1), and lipid transport-related genes, including Abca1, Abcg1, Ldlr, Hdlbp, Lp-pla2, and Srebp-1c. Through animal experiments, we further verified that the circSnd1/miR-485-3p/Olr1 axis regulated these molecules and participated in the formation and/or development of AS in vivo. Conclusions The circSnd1/miR-485-3p/Olr1 axis participates in the formation and development of atherosclerosis by regulating inflammation and lipid transport.
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Gopikrishnan M, R HC, R G, Ashour HM, Pintus G, Hammad M, Kashyap MK, C GPD, Zayed H. Therapeutic and diagnostic applications of exosomal circRNAs in breast cancer. Funct Integr Genomics 2023; 23:184. [PMID: 37243750 DOI: 10.1007/s10142-023-01083-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 04/29/2023] [Accepted: 05/02/2023] [Indexed: 05/29/2023]
Abstract
Circular RNAs (circRNAs) are regulatory elements that are involved in orchestrating gene expression and protein functions and are implicated in various biological processes including cancer. Notably, breast cancer has a significant mortality rate and is one of the most common malignancies in women. CircRNAs have been demonstrated to contribute to the pathogenesis of breast cancer including its initiation, progression, metastasis, and resistance to drugs. By acting as miRNA sponges, circRNAs can indirectly influence gene expression by disrupting miRNA regulation of their target genes, ultimately altering the course of cancer development and progression. Additionally, circRNAs can interact with proteins and modulate their functions including signaling pathways involved in the initiation and development of cancer. Recently, circRNAs can encode peptides that play a role in the pathophysiology of breast cancer and other diseases and their potential as diagnostic biomarkers and therapeutic targets for various cancers including breast cancer. CircRNAs possess biomarkers that differentiate, such as stability, specificity, and sensitivity, and can be detected in several biological specimens such as blood, saliva, and urine. Moreover, circRNAs play an important role in various cellular processes including cell proliferation, differentiation, and apoptosis, all of which are integral factors in the development and progression of cancer. This review synthesizes the functions of circRNAs in breast cancer, scrutinizing their contributions to the onset and evolution of the disease through their interactions with exosomes and cancer-related intracellular pathways. It also delves into the potential use of circRNA as a biomarker and therapeutic target against breast cancer. It discusses various databases and online tools that offer crucial circRNA information and regulatory networks. Lastly, the challenges and prospects of utilizing circRNAs in clinical settings associated with breast cancer are explored.
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Affiliation(s)
- Mohanraj Gopikrishnan
- Laboratory of Integrative Genomics, Department of Integrative Biology, School of BioSciences and Technology, Vellore Institute of Technology (VIT), Vellore, 632014, Tamil Nadu, India
| | - Hephzibah Cathryn R
- Laboratory of Integrative Genomics, Department of Integrative Biology, School of BioSciences and Technology, Vellore Institute of Technology (VIT), Vellore, 632014, Tamil Nadu, India
| | - Gnanasambandan R
- Laboratory of Integrative Genomics, Department of Integrative Biology, School of BioSciences and Technology, Vellore Institute of Technology (VIT), Vellore, 632014, Tamil Nadu, India
| | - Hossam M Ashour
- Department of Integrative Biology, College of Arts and Sciences, University of South Florida, St. Petersburg, Florida, 33701, USA
| | - Gianfranco Pintus
- Department of Biomedical Sciences, University of Sassari, 07100, Sassari, Italy
| | - Mohamed Hammad
- Department of Stem Cell Biology and Regenerative Medicine, City of Hope Beckman Research Institute, Duarte, California, USA
| | - Manoj Kumar Kashyap
- Amity Stem Cell Institute, Amity Medical School, Amity University Haryana, Manesar (Gurugram), Panchgaon, Haryana (HR), 122413, India
- Clinical Biosamples & Research Services (CBRS), Noida, Uttar Pradesh, 201301, India
| | - George Priya Doss C
- Laboratory of Integrative Genomics, Department of Integrative Biology, School of BioSciences and Technology, Vellore Institute of Technology (VIT), Vellore, 632014, Tamil Nadu, India.
| | - Hatem Zayed
- Department of Biomedical Sciences, College of Health Sciences, QU Health, Qatar University, 2713, Doha, Qatar.
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17
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Al-Hawary SIS, Asghar W, Amin A, Mustafa YF, Hjazi A, Almulla AF, Ali SAJ, Ali SS, Romero-Parra RM, Abdulhussien Alazbjee AA, Mahmoudi R, Fard SRH. Circ_0067934 as a novel therapeutic target in cancer: From mechanistic to clinical perspectives. Pathol Res Pract 2023; 245:154469. [PMID: 37100022 DOI: 10.1016/j.prp.2023.154469] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/12/2023] [Accepted: 04/18/2023] [Indexed: 04/28/2023]
Abstract
Circular RNAs, as a type of non-coding RNAs, are identified in a various cell. Circular RNAs have stable structures, conserved sequence, and tissue and cell-specific level. High throughput technologies have proposed that circular RNAs act via various mechanisms like sponging microRNAs and proteins, regulating transcription factors, and scaffolding mediators. Cancer is one of the major threat for human health. Emerging data have proposed that circular RNAs are dysregulated in cancers as well as are associated with aggressive behaviors of cancer -related behaviors like cell cycle, proliferation, apoptosis, invasion, migration, and epithelial-mesenchymal transition (EMT). Among them, circ_0067934 was shown to act as an oncogene in cancers to enhance migration, invasion, proliferation, cell cycle, EMT, and inhibit cell apoptosis. In addition, these studies have proposed that it could be a promising diagnostic and prognostic biomarker in cancer. This study aimed to review the expression and molecular mechanism of circ_0067934 in modulating the malignant behaviors of cancers as well as to explore its potential as a target in cancer chemotherapy, diagnosis, prognosis and treatment.
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Affiliation(s)
| | | | - Aaima Amin
- Quaid e Azam Medical College, Bahawal Victorial Hospital, Bahawalpur, Pakistan
| | - Yasser Fakri Mustafa
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Mosul, Mosul 41001, Iraq
| | - Ahmed Hjazi
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Prince Sattam bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | - Abbas F Almulla
- Medical Laboratory Technology Department, College of Medical Technology, The Islamic University, Najaf, Iraq
| | | | - Sally Saad Ali
- College of Dentistry, Al-Bayan University, Baghdad, Iraq
| | | | | | - Reza Mahmoudi
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
| | - Seyed Reza Hosseini Fard
- Department of Biochemistry, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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18
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Wei J, Li M, Xue C, Chen S, Zheng L, Deng H, Tang F, Li G, Xiong W, Zeng Z, Zhou M. Understanding the roles and regulation patterns of circRNA on its host gene in tumorigenesis and tumor progression. J Exp Clin Cancer Res 2023; 42:86. [PMID: 37060016 PMCID: PMC10105446 DOI: 10.1186/s13046-023-02657-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 03/29/2023] [Indexed: 04/16/2023] Open
Abstract
Circular RNAs (circRNAs) are a novel type of endogenous non-coding RNAs, which are covalently closed loop structures formed by precursor mRNAs (pre-mRNAs) through back-splicing. CircRNAs are abnormally expressed in many tumors, and play critical roles in a variety of tumors as oncogenes or tumor suppressor genes by sponging miRNAs, regulating alternative splicing and transcription, cis-regulating host genes, interacting with RNA binding proteins (RBPs) or encoding polypeptides. Among them, the regulation of circRNAs on their corresponding host genes is a critical way for circRNAs to exit their functions. Accumulating evidence suggests that circRNAs are able to regulate the expression of host genes at the transcriptional level, post-transcriptional level, translational level, post-translational level, or by encoding polypeptides. Therefore, this paper mainly summarized the roles and association of circRNAs and their corresponding host genes in tumorigenesis and tumor progression, generalized the circRNAs that function synergistically or antagonistically with their host genes, and elaborated the mechanisms of mutual regulation between circRNAs and their host genes. More importantly, this review provides specific references for revealing the potential application of circRNAs combined with their host genes in tumor diagnosis, treatment and prognosis.
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Affiliation(s)
- Jianxia Wei
- NHC Key Laboratory of Carcinogenesis, Hunan Key Laboratory of Oncotarget Gene, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, China
- Cancer Research Institute, Central South University, Changsha, 410078, China
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, 410078, China
| | - Mengna Li
- NHC Key Laboratory of Carcinogenesis, Hunan Key Laboratory of Oncotarget Gene, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, China
- Cancer Research Institute, Central South University, Changsha, 410078, China
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, 410078, China
| | - Changning Xue
- NHC Key Laboratory of Carcinogenesis, Hunan Key Laboratory of Oncotarget Gene, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, China
- Cancer Research Institute, Central South University, Changsha, 410078, China
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, 410078, China
| | - Shipeng Chen
- NHC Key Laboratory of Carcinogenesis, Hunan Key Laboratory of Oncotarget Gene, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, China
- Cancer Research Institute, Central South University, Changsha, 410078, China
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, 410078, China
| | - Lemei Zheng
- NHC Key Laboratory of Carcinogenesis, Hunan Key Laboratory of Oncotarget Gene, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, China
- Cancer Research Institute, Central South University, Changsha, 410078, China
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, 410078, China
| | - Hongyu Deng
- NHC Key Laboratory of Carcinogenesis, Hunan Key Laboratory of Oncotarget Gene, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, China
- Cancer Research Institute, Central South University, Changsha, 410078, China
| | - Faqing Tang
- NHC Key Laboratory of Carcinogenesis, Hunan Key Laboratory of Oncotarget Gene, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, China
| | - Guiyuan Li
- NHC Key Laboratory of Carcinogenesis, Hunan Key Laboratory of Oncotarget Gene, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, China
- Cancer Research Institute, Central South University, Changsha, 410078, China
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, 410078, China
| | - Wei Xiong
- NHC Key Laboratory of Carcinogenesis, Hunan Key Laboratory of Oncotarget Gene, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, China
- Cancer Research Institute, Central South University, Changsha, 410078, China
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, 410078, China
| | - Zhaoyang Zeng
- NHC Key Laboratory of Carcinogenesis, Hunan Key Laboratory of Oncotarget Gene, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, China
- Cancer Research Institute, Central South University, Changsha, 410078, China
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, 410078, China
| | - Ming Zhou
- NHC Key Laboratory of Carcinogenesis, Hunan Key Laboratory of Oncotarget Gene, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, China.
- Cancer Research Institute, Central South University, Changsha, 410078, China.
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, 410078, China.
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HAN ZY, HUANG SJ, WANG R, GUAN HQ. Screening of differential circRNAs in the placenta of patients with preeclampsia and their regulatory mechanism. MINERVA BIOTECHNOLOGY AND BIOMOLECULAR RESEARCH 2023. [DOI: 10.23736/s2724-542x.22.02913-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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20
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Lv X, Luo Q, Xin S, Zheng W, Xu T, Sun Y. Circular RNA circPlce1 regulates innate immune response in miiuy croaker, Miichthys miiuy. FISH & SHELLFISH IMMUNOLOGY 2023; 133:108561. [PMID: 36690265 DOI: 10.1016/j.fsi.2023.108561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 01/06/2023] [Accepted: 01/19/2023] [Indexed: 06/17/2023]
Abstract
In recent years, more and more researchers have devoted to the study of circular RNAs (circRNAs) in noncoding RNAs. As an important regulator in a variety of biological processes, circRNAs are relatively abundant in the study of mammals, while research in lower vertebrates is still lacking. In this study, we found a circRNA, circPlce1, related to innate immune response in Miichthys miiuy (miiuy croaker). The experimental results confirmed that circPlce1 could promote the production of antiviral genes and inflammatory response under the stimulation of poly (I: C) and LPS. We also confirmed that circPlce1 can promote NF-κB and IRF3 pathways through luciferase reporter assay experiment. In addition, we also found that circPlce1 can promote cell proliferation and improve cell viability. In conclusion, our results showed that circPlce1 plays an active role in regulating inflammatory response, cell proliferation and cell viability, providing a foundation for the study of the biological function of circRNAs in the innate immune response in teleost fish.
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Affiliation(s)
- Xing Lv
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Qiang Luo
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Shiying Xin
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Weiwei Zheng
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Tianjun Xu
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China; Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
| | - Yuena Sun
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, China; National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, China.
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21
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Ding L, Wang R, Zheng Q, Shen D, Wang H, Lu Z, Luo W, Xie H, Ren L, Jiang M, Yu C, Zhou Z, Lin Y, Lu H, Xue D, Su W, Xia L, Neuhaus J, Cheng S, Li G. circPDE5A regulates prostate cancer metastasis via controlling WTAP-dependent N6-methyladenisine methylation of EIF3C mRNA. J Exp Clin Cancer Res 2022; 41:187. [PMID: 35650605 PMCID: PMC9161465 DOI: 10.1186/s13046-022-02391-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 05/15/2022] [Indexed: 12/24/2022] Open
Abstract
Background Circular RNA (circRNA) is a novel class noncoding RNA (ncRNA) that plays a critical role in various cancers, including prostate cancer (PCa). However, the clinical significance, biological function, and molecular mechanisms of circRNAs in prostate cancer remain to be elucidated. Methods A circRNA array was performed to identified the differentially expressed circRNAs. circPDE5A was identified as a novel circRNA which downregulated in clinical samples. Functionally, the in vitro and in vivo assays were applied to explore the role of circPDE5A in PCa metastasis. Mechanistically, the interaction between circPDE5A and WTAP was verified using RNA pulldown followed by mass spectrometry, RNA Immunoprecipitation (RIP) assays. m6A methylated RNA immunoprecipitation sequencing (MeRIP-seq) was then used to identified the downstream target of circPDE5A. Chromatin immunoprecipitation assay (ChIP) and dual-luciferase reporter assay were used to identified transcriptional factor which regulated circPDE5A expression. Results circPDE5A was identified downregulated in PCa tissues compared to adjacent normal tissue and was negatively correlated with gleason score of PCa patients. circPDE5A inhibits PCa cells migration and invasion both in vitro and in vivo. circPDE5A blocks the WTAP-dependent N6-methyladenisine (m6A) methylation of eukaryotic translation initiation factor 3c (EIF3C) mRNA by forming the circPDE5A-WTAP complex, and finally disrupts the translation of EIF3C. Moreover, the circPDE5A-dependent decrease in EIF3C expression inactivates the MAPK pathway and then restrains PCa progression. Conclusions Our findings demonstrate that FOXO4-mediated upregulation of circPDE5A controls PCa metastasis via the circPDE5A-WTAP-EIF3C-MAPK signaling pathway and could serve as a potential therapeutic targer for PCa. Supplementary Information The online version contains supplementary material available at 10.1186/s13046-022-02391-5.
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22
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Zhang F, Li L, Fan Z. circRNAs and their relationship with breast cancer: a review. World J Surg Oncol 2022; 20:373. [PMID: 36443878 PMCID: PMC9703749 DOI: 10.1186/s12957-022-02842-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 11/20/2022] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Recently, an increasing number of studies have been conducted on circular RNAs (circRNAs) that have demonstrated their different roles in a variety of biological processes. Moreover, a large number of circRNAs have been shown to be involved in the occurrence and development of breast cancer (BC). MAIN BODY Both functional and mechanistic experiments have shown that circular RNAs (circRNAs) can act as competing endogenous RNAs by sponging miRNAs, encoding proteins, and regulating parental genes. In doing so, circRNAs modulate the proliferation, migration, apoptosis, and invasion of BC cells in vitro as well as tumor growth and metastasis in vivo. Moreover, scores of circRNAs have been demonstrated to be related to clinicopathological features, prognosis, and treatment sensitivity in patients with BC; many circRNAs have shown potential as biomarkers for diagnosis, drug sensitivity, and prognosis prediction. Furthermore, researchers have focused on circRNAs as potential therapeutic targets. CONCLUSION In this review, we briefly summarize the functions and categories of circRNAs, their different roles in BC, and recent research and therapeutic progress related to circRNAs.
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Affiliation(s)
- Fan Zhang
- grid.430605.40000 0004 1758 4110Department of Breast Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin 130021 China
| | - Liying Li
- grid.430605.40000 0004 1758 4110Department of Breast Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin 130021 China
| | - Zhimin Fan
- grid.430605.40000 0004 1758 4110Department of Breast Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin 130021 China
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23
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Chen L, Zhu L, Fang J, Zhang N, Li D, Sheng X, Zhou J, Wang S, Wang J. Circular RNA circFoxo3 Promotes Granulosa Cell Apoptosis Under Oxidative Stress Through Regulation of FOXO3 Protein. DNA Cell Biol 2022; 41:1026-1037. [DOI: 10.1089/dna.2022.0449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Linjun Chen
- Center for Reproductive Medicine and Obstetrics and Gynecology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- Center for Molecular Reproductive Medicine, Nanjing University, Nanjing, China
| | - Lihua Zhu
- Center for Reproductive Medicine and Obstetrics and Gynecology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- Center for Molecular Reproductive Medicine, Nanjing University, Nanjing, China
| | - Junshun Fang
- Center for Reproductive Medicine and Obstetrics and Gynecology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- Center for Molecular Reproductive Medicine, Nanjing University, Nanjing, China
| | - Ningyuan Zhang
- Center for Reproductive Medicine and Obstetrics and Gynecology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- Center for Molecular Reproductive Medicine, Nanjing University, Nanjing, China
| | - Dong Li
- Center for Reproductive Medicine and Obstetrics and Gynecology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- Center for Molecular Reproductive Medicine, Nanjing University, Nanjing, China
| | - Xiaoqiang Sheng
- Center for Reproductive Medicine and Obstetrics and Gynecology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- Center for Molecular Reproductive Medicine, Nanjing University, Nanjing, China
| | - Jidong Zhou
- Center for Reproductive Medicine and Obstetrics and Gynecology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- Center for Molecular Reproductive Medicine, Nanjing University, Nanjing, China
| | - Shanshan Wang
- Center for Reproductive Medicine and Obstetrics and Gynecology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- Center for Molecular Reproductive Medicine, Nanjing University, Nanjing, China
| | - Jie Wang
- Center for Reproductive Medicine and Obstetrics and Gynecology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- Center for Molecular Reproductive Medicine, Nanjing University, Nanjing, China
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Zhao C, Li X, Sun G, Liu P, Kong K, Chen X, Yang F, Wang X. CircFOXO3 protects against osteoarthritis by targeting its parental gene FOXO3 and activating PI3K/AKT-mediated autophagy. Cell Death Dis 2022; 13:932. [PMID: 36344492 PMCID: PMC9640610 DOI: 10.1038/s41419-022-05390-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 10/26/2022] [Accepted: 10/28/2022] [Indexed: 11/09/2022]
Abstract
Osteoarthritis (OA) is a degenerative joint disorder causing pain and functional disability. Emerging evidence reveals that circular RNAs (circRNAs) play essential roles in OA progression and development. This study aimed to investigate the role of a novel circRNA factor, circFOXO3, in the progression of OA and elucidate its underlying molecular mechanism. The function of circFOXO3 in OA and interaction between circFOXO3 and its downstream mRNA target, forkhead box O3 (FOXO3), were evaluated by western blot (WB), immunofluorescence (IF), RNA immunoprecipitation, reverse transcription-quantitative PCR (RT-qPCR), and fluorescence in situ hybridization (FISH). Upregulation of circFOXO3 and autophagic flux were detected both in vivo and in vitro by WB, transmission electron microscopy (TEM), IF, and immunohistochemistry (IHC). A mouse model of OA was also used to confirm the role of circFOXO3 in OA pathogenesis in vivo. Decreased expression of circFOXO3 in OA cartilage tissues was directly associated with excessive apoptosis and imbalance between anabolic and catabolic factors of the extracellular matrix (ECM). Mechanistically, circFOXO3 functioned in cartilage by targeting its parental gene FOXO3 and activating autophagy. Intra-articular injection of lentivirus-circFOXO3 alleviated OA in the mouse model. In conclusion, our results reveal the key role played by circFOXO3 in OA progression; circFOXO3 overexpression may alleviate apoptosis of chondrocytes and promote anabolism of the ECM via activation of FOXO3 and autophagy, providing a potentially effective novel therapeutic strategy for OA.
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Affiliation(s)
- Chen Zhao
- grid.16821.3c0000 0004 0368 8293Department of Orthopedics, Shanghai Key Laboratory of Orthopedic Implant, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011 China
| | - Xiaodong Li
- grid.16821.3c0000 0004 0368 8293Department of Orthopedics, Shanghai Key Laboratory of Orthopedic Implant, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011 China
| | - Guantong Sun
- grid.16821.3c0000 0004 0368 8293Department of Orthopedics, Shanghai Key Laboratory of Orthopedic Implant, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011 China
| | - Pengcheng Liu
- grid.16821.3c0000 0004 0368 8293Department of Orthopedics, Shanghai Key Laboratory of Orthopedic Implant, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011 China
| | - Keyu Kong
- grid.16821.3c0000 0004 0368 8293Department of Orthopedics, Shanghai Key Laboratory of Orthopedic Implant, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011 China
| | - Xuzhuo Chen
- grid.16821.3c0000 0004 0368 8293Department of Oral Surgery, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011 China
| | - Fei Yang
- grid.16821.3c0000 0004 0368 8293Department of Orthopedics, Shanghai Key Laboratory of Orthopedic Implant, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011 China
| | - Xiaoqing Wang
- grid.16821.3c0000 0004 0368 8293Department of Orthopedics, Shanghai Key Laboratory of Orthopedic Implant, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011 China
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Li X, Li L, Si X, Zhang Z, Ni Z, Zhou Y, Liu K, Xia W, Zhang Y, Gu X, Huang J, Yin C, Shao A, Jiang L. The regulatory roles of circular RNAs via autophagy in ischemic stroke. Front Neurol 2022; 13:963508. [PMID: 36330428 PMCID: PMC9623297 DOI: 10.3389/fneur.2022.963508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 09/07/2022] [Indexed: 11/24/2022] Open
Abstract
Ischemic stroke (IS) is a severe disease with a high disability, recurrence, and mortality rates. Autophagy, a highly conserved process that degrades damaged or aging organelles and excess cellular components to maintain homeostasis, is activated during IS. It influences the blood–brain barrier integrity and regulates apoptosis. Circular RNAs (circRNAs) are novel non-coding RNAs involved in IS-induced autophagy and participate in various pathological processes following IS. In addition, they play a role in autophagy regulation. This review summarizes current evidence on the roles of autophagy and circRNA in IS and the potential mechanisms by which circRNAs regulate autophagy to influence IS injury. This review serves as a basis for the clinical application of circRNAs as novel biomarkers and therapeutic targets in the future.
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Affiliation(s)
- Xiaoqin Li
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, China
| | - Lingfei Li
- Department of Neurology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiaoli Si
- Department of Neurology, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Zheng Zhang
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, China
| | - Zhumei Ni
- Department of Emergency, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yongji Zhou
- Department of Neurology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Keqin Liu
- Department of Neurology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Wenqing Xia
- Department of Neurology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yuyao Zhang
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xin Gu
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jinyu Huang
- Department of Cardiology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Congguo Yin
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, China
- Department of Neurology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
- *Correspondence: Congguo Yin
| | - Anwen Shao
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological Disease, Hangzhou, China
- Anwen Shao
| | - Lin Jiang
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, China
- Department of Neurology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Lin Jiang
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Liu Y, Qiu G, Luo Y, Li S, Xu Y, Zhang Y, Hu J, Li P, Pan H, Wang Y. Circular RNA ROCK1, a novel circRNA, suppresses osteosarcoma proliferation and migration via altering the miR-532-5p/PTEN axis. EXPERIMENTAL & MOLECULAR MEDICINE 2022; 54:1024-1037. [PMID: 35879346 PMCID: PMC9356001 DOI: 10.1038/s12276-022-00806-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 03/15/2022] [Accepted: 04/26/2022] [Indexed: 12/20/2022]
Abstract
As the most prevalent bone tumor in children and adolescents, the pathogenesis and metastasis of osteosarcoma (OS) remain largely unclear. Here, we investigated the expression and function of a novel circular RNA (circRNA), circROCK1-E3/E4, which is back-spliced from exons 3 and 4 of Rho-associated coiled-coil containing protein kinase 1 (ROCK1) in OS. We found that circROCK1-E3/E4, regulated by the well-known RNA-binding protein quaking (QKI), was downregulated in OS and correlated with unfavorable clinical features of patients with OS. Functional proliferation and cell motility assays indicated that circROCK1-E3/E4 serves as a tumor suppressor in OS cells. Mechanistically, circROCK1-E3/E4 suppressed proliferation and migration by upregulating phosphatase and tensin homolog (PTEN) through microRNA-532-5p (miR-532-5p) sponging. In the constructed nude mouse model, circROCK1-E3/E4 inhibited tumor growth and lung metastasis in vivo. This study demonstrates the functions and molecular mechanisms of circROCK1-E3/E4 in the progression of OS. These findings may identify novel targets for the molecular therapy of OS. Understanding the role of a circular RNA molecule in bone cancer may provide a foundation for potential therapies. The factors underlying the development and progression of osteosarcoma, an aggressive bone cancer most common in young people, remain unclear. Circular RNAs (circRNAs), derived from RNA splicing events, have multiple functions in diseases such as cancer. Yong Wang at Zhejiang University, China, and co-workers had already demonstrated that the ROCK1 gene plays critical roles in osteosarcoma progression. Now, they have identified a novel circRNA called circROCK1-E3/E4 derived from ROCK1, which acts as a tumor suppressor in osteosarcoma. In experiments on human cell lines and mouse models, they found that circROCK1-E3/E4 regulates a key pathway that suppresses the proliferation and migration of cancer cells. Poor prognosis is linked to downregulated levels of this circRNA.
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Affiliation(s)
- Yize Liu
- Department of Orthopedic Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Zhejiang, 310003, Hangzhou, China.,Fourth Department of Orthopedics, Central Hospital Affiliated to Shenyang Medical College, Shenyang, People's Republic of China
| | - Guanzhen Qiu
- Fourth Department of Orthopedics, Central Hospital Affiliated to Shenyang Medical College, Shenyang, People's Republic of China
| | - Yinzhou Luo
- Fourth Department of Orthopedics, Central Hospital Affiliated to Shenyang Medical College, Shenyang, People's Republic of China
| | - Shanshan Li
- Department of Respiratory, Central Hospital Affiliated to Shenyang Medical College, Shenyang, People's Republic of China
| | - Yeqiu Xu
- Fourth Department of Orthopedics, Central Hospital Affiliated to Shenyang Medical College, Shenyang, People's Republic of China
| | - Yuanzhuang Zhang
- Fourth Department of Orthopedics, Central Hospital Affiliated to Shenyang Medical College, Shenyang, People's Republic of China
| | - Jiayuan Hu
- Department of Electrodiagnosis, Central Hospital Affiliated to Shenyang Medical College, Shenyang, People's Republic of China
| | - Peifeng Li
- Center for Precise Medicine, Shengyang Medical College, 110034, Shenyang, China
| | - Hai Pan
- Department of Neurosurgery and Dean's Office, Central Hospital Affiliated to Shenyang Medical College, Shenyang, People's Republic of China
| | - Yong Wang
- Department of Orthopedic Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Zhejiang, 310003, Hangzhou, China. .,Fourth Department of Orthopedics, Central Hospital Affiliated to Shenyang Medical College, Shenyang, People's Republic of China. .,Central Laboratory, Central Hospital Affiliated to Shenyang Medical College, Shenyang, People's Republic of China.
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Effects of circFOXO3 on the Proliferation and Invasion of Liver Cancer Cells by Regulating PI3K/Akt Pathway. CONTRAST MEDIA & MOLECULAR IMAGING 2022; 2022:2109908. [PMID: 35909586 PMCID: PMC9303508 DOI: 10.1155/2022/2109908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/11/2022] [Accepted: 06/17/2022] [Indexed: 12/24/2022]
Abstract
Objective Hepatocellular carcinoma is a malignant disease occurring in the liver and is one of the main causes of death in cancer patients. Tumor cells are the main components of tumors and have a strong proliferative capacity. They are easily transferred to other parts of the body and can produce harmful substances that destroy the normal organ structure and endanger human life and health. In this study, we investigate the effect of circFOXO3 on the proliferation and invasion of hepatocellular carcinoma cells and its possible mechanism. Methods Human hepatocellular carcinoma cells BEL-7404, Hep G2, Hep 3B2.1–7, HuH-7, Li-7, and human normal hepatocytes HHL-5 were selected, and the expression level of circFOXO3 in the cell lines was determined by qRT-PCR. The cell line with low circFOXO3 expression level (HuH-7 cells) was used for follow-up experiments. HuH-7 liver cancer cells were divided into the control group (normal cultured), circFOXO3-NC group (transfected with circFOXO3 negative control), circFOXO3 mimic group (transfected with circFOXO3 mimic), PI3K activator group (20 μmol/L PI3K activator 740Y-P), and circFOXO3 mimic + PI3K activator group (transfected with circFOXO3 mimic + treated with PI3K activator 740Y-P). The qRT-PCR method was used to determine the expression level of circFOXO3 in HuH-7 liver cancer cells in each group, WB was used to detect the expression of apoptosis, invasion, and phosphoinositide 3-kinase/protein kinase B (PI3K/Akt) pathway related proteins in HuH-7 liver cancer cells in each group, the CCK-8 method was used to determine the viability of HuH-7 liver cancer cells in each group, flow cytometry was used to determine the apoptotic ability of HuH-7 liver cancer cells in each group, the transwell chamber experiment was used to determine the invasion ability of HuH-7 liver cancer cells in each group, and the scratch test was used to determine the migration ability of HuH-7 liver cancer cells in each group. Results circFOXO3 showed low expression in liver cancer cells; compared with the control group, the circFOXO3 expression and apoptosis rate of HuH-7 liver cancer cells in the circFOXO3 mimic group were significantly increased (P < 0.05) and the PI3K/Akt pathway-related protein expression, cell viability, invasion, and migration abilities were significantly reduced (P < 0.05); the apoptosis rate of HuH-7 liver cancer cells in the PI3K activator group was significantly reduced (P < 0.05) and the PI3K/Akt pathway related protein expression, cell viability, invasion and migration abilities were significantly increased (P < 0.05). Compared with the circFOXO3 mimic group, the apoptosis rate of HuH-7 liver cancer cells in the circFOXO3 mimic + PI3K activator group was significantly reduced (P < 0.05) and the PI3K/Akt pathway-related protein expression, cell viability, invasion and migration abilities were significantly increased (P < 0.05). Conclusion Highly expressed circFOXO3 can inhibit the proliferation and invasion of HuH-7 liver cancer cells, which may be achieved by inhibiting the PI3K/Akt pathway.
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Nsengimana B, Khan FA, Awan UA, Wang D, Fang N, Wei W, Zhang W, Ji S. Pseudogenes and Liquid Phase Separation in Epigenetic Expression. Front Oncol 2022; 12:912282. [PMID: 35875144 PMCID: PMC9305658 DOI: 10.3389/fonc.2022.912282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 06/13/2022] [Indexed: 11/24/2022] Open
Abstract
Pseudogenes have been considered as non-functional genes. However, peptides and long non-coding RNAs produced by pseudogenes are expressed in different tumors. Moreover, the dysregulation of pseudogenes is associated with cancer, and their expressions are higher in tumors compared to normal tissues. Recent studies show that pseudogenes can influence the liquid phase condensates formation. Liquid phase separation involves regulating different epigenetic stages, including transcription, chromatin organization, 3D DNA structure, splicing, and post-transcription modifications like m6A. Several membrane-less organelles, formed through the liquid phase separate, are also involved in the epigenetic regulation, and their defects are associated with cancer development. However, the association between pseudogenes and liquid phase separation remains unrevealed. The current study sought to investigate the relationship between pseudogenes and liquid phase separation in cancer development, as well as their therapeutic implications.
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Affiliation(s)
- Bernard Nsengimana
- Laboratory of Cell Signal Transduction, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Henan University, Kaifeng, China
| | - Faiz Ali Khan
- Laboratory of Cell Signal Transduction, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Henan University, Kaifeng, China
- School of Life Sciences, Henan University, Kaifeng, China
- Department of Basic Sciences Research, Shaukat Khanum Memorial Cancer Hospital and Research Centre (SKMCH&RC), Lahore, Pakistan
| | - Usman Ayub Awan
- Department of Medical Laboratory Technology, The University of Haripur, Haripur, Pakistan
| | - Dandan Wang
- Laboratory of Cell Signal Transduction, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Henan University, Kaifeng, China
| | - Na Fang
- Laboratory of Cell Signal Transduction, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Henan University, Kaifeng, China
| | - Wenqiang Wei
- Laboratory of Cell Signal Transduction, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Henan University, Kaifeng, China
- *Correspondence: Wenqiang Wei, ; Weijuan Zhang, ; Shaoping Ji,
| | - Weijuan Zhang
- Laboratory of Cell Signal Transduction, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Henan University, Kaifeng, China
- *Correspondence: Wenqiang Wei, ; Weijuan Zhang, ; Shaoping Ji,
| | - Shaoping Ji
- Laboratory of Cell Signal Transduction, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Henan University, Kaifeng, China
- *Correspondence: Wenqiang Wei, ; Weijuan Zhang, ; Shaoping Ji,
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circCCT3 Enhances Invasion and Epithelial-Mesenchymal Transition (EMT) of Non-Small-Cell Lung Cancer (NSCLC) via the miR-107/Wnt/FGF7 Axis. JOURNAL OF ONCOLOGY 2022; 2022:7020774. [PMID: 35783154 PMCID: PMC9242791 DOI: 10.1155/2022/7020774] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 05/31/2022] [Accepted: 06/02/2022] [Indexed: 11/17/2022]
Abstract
Background. CircRNAs play a role in a variety of biological processes, including tumorigenesis. circCCT3 has been shown to regulate cancer initiation and progression. Unfortunately, whether circCCT3 is involved in non-small-cell lung cancer (NSCLC) metastasis remains unclear. Methods. Our study utilized RT-qPCR to examine gene expression levels. A transwell assay was used to measure invasion ability of cells. Starbase software and TargetScan software were used to predict target genes. Results. circCCT3 knockdown attenuated invasion and epithelial-mesenchymal transition (EMT) of A549 and Calu-1 cells. miR-107 mimics could rescue circCCT3-induced invasion and EMT. Next, miR-107 mimics and circCCT3 knockdown suppressed Wnt3a and FGF7 expression. An miR-107 inhibitor promoted Wnt3a and FGF7 expressions. Finally, FGF7 greatly restored miR-107-inhibited invasion and EMT of A549 cells. Conclusion. Here, we reveal a molecular mechanism circCCT3/miR-107/Wnt/FGF7 responsible for NSCLC metastasis.
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Tumor Cells-derived exosomal CircRNAs: Novel cancer drivers, molecular mechanisms, and clinical opportunities. Biochem Pharmacol 2022; 200:115038. [DOI: 10.1016/j.bcp.2022.115038] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 04/01/2022] [Accepted: 04/06/2022] [Indexed: 12/12/2022]
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Exosome-Associated circRNAs as Key Regulators of EMT in Cancer. Cells 2022; 11:cells11101716. [PMID: 35626752 PMCID: PMC9140110 DOI: 10.3390/cells11101716] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 05/17/2022] [Accepted: 05/19/2022] [Indexed: 12/12/2022] Open
Abstract
Epithelial-to-mesenchymal transition (EMT) is a dynamic program of cell plasticity aberrantly reactivated in cancer. The crosstalk between tumor cells and the tumoral microenvironment (TME) has a pivotal importance for the induction of the EMT and the progression toward a malignant phenotype. Notably, exosomes are key mediators of this crosstalk as vehicles of specific molecular signals that include the class of circular RNAs (circRNAs). This review specifically focuses on the role of exosome-associated circRNAs as key regulators of EMT in cancer. The relevance of these molecules in regulating the intercellular communication in TME and tumor progression is highlighted. Moreover, the here-presented evidence indicates that exosome-associated circRNA modulation should be taken in account for cancer diagnostic and therapeutic approaches.
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Zhang Y, Tian Z, Ye H, Sun X, Zhang H, Sun Y, Mao Y, Yang Z, Li M. Emerging functions of circular RNA in the regulation of adipocyte metabolism and obesity. Cell Death Dis 2022; 8:268. [PMID: 35595755 PMCID: PMC9122900 DOI: 10.1038/s41420-022-01062-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 05/04/2022] [Accepted: 05/10/2022] [Indexed: 02/08/2023]
Abstract
As noncoding RNAs, circular RNAs (circRNAs) are covalently enclosed endogenous biomolecules in eukaryotes that have tissue specificity and cell specificity. circRNAs were once considered a rare splicing byproduct. With the development of high-throughput sequencing, it has been confirmed that they are expressed in thousands of mammalian genes. To date, only a few circRNA functions and regulatory mechanisms have been verified. Adipose is the main tissue for body energy storage and energy supply. Adipocyte metabolism is a physiological process involving a series of genes and affects biological activities in the body, such as energy metabolism, immunity, and signal transmission. When adipocyte formation is dysregulated, it will cause a series of diseases, such as atherosclerosis, obesity, fatty liver, and diabetes. In recent years, many noncoding RNAs involved in adipocyte metabolism have been revealed. This review provides a comprehensive overview of the basic structure and biosynthetic mechanism of circRNAs, and further discusses the circRNAs related to adipocyte formation in adipose tissue and liver. Our review will provide a reference for further elucidating the genetic regulation mechanism of circRNAs involved in adipocyte metabolism.
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Affiliation(s)
- Yuanyuan Zhang
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, 225009, Yangzhou, Jiangsu, China.,Key Laboratory of Animal Genetics & Breeding and Molecular Design of Jiangsu province, College of Animal Science and Technology, Yangzhou University, 225009, Yangzhou, Jiangsu, China
| | - Zhichen Tian
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, 225009, Yangzhou, Jiangsu, China.,Key Laboratory of Animal Genetics & Breeding and Molecular Design of Jiangsu province, College of Animal Science and Technology, Yangzhou University, 225009, Yangzhou, Jiangsu, China
| | - Haibo Ye
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, 225009, Yangzhou, Jiangsu, China.,Key Laboratory of Animal Genetics & Breeding and Molecular Design of Jiangsu province, College of Animal Science and Technology, Yangzhou University, 225009, Yangzhou, Jiangsu, China
| | - Xiaomei Sun
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, 225009, Yangzhou, Jiangsu, China.,Key Laboratory of Animal Genetics & Breeding and Molecular Design of Jiangsu province, College of Animal Science and Technology, Yangzhou University, 225009, Yangzhou, Jiangsu, China
| | - Huiming Zhang
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, 225009, Yangzhou, Jiangsu, China.,Key Laboratory of Animal Genetics & Breeding and Molecular Design of Jiangsu province, College of Animal Science and Technology, Yangzhou University, 225009, Yangzhou, Jiangsu, China
| | - Yujia Sun
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, 225009, Yangzhou, Jiangsu, China.,Key Laboratory of Animal Genetics & Breeding and Molecular Design of Jiangsu province, College of Animal Science and Technology, Yangzhou University, 225009, Yangzhou, Jiangsu, China
| | - Yongjiang Mao
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, 225009, Yangzhou, Jiangsu, China.,Key Laboratory of Animal Genetics & Breeding and Molecular Design of Jiangsu province, College of Animal Science and Technology, Yangzhou University, 225009, Yangzhou, Jiangsu, China
| | - Zhangping Yang
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, 225009, Yangzhou, Jiangsu, China. .,Key Laboratory of Animal Genetics & Breeding and Molecular Design of Jiangsu province, College of Animal Science and Technology, Yangzhou University, 225009, Yangzhou, Jiangsu, China.
| | - Mingxun Li
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, 225009, Yangzhou, Jiangsu, China. .,Key Laboratory of Animal Genetics & Breeding and Molecular Design of Jiangsu province, College of Animal Science and Technology, Yangzhou University, 225009, Yangzhou, Jiangsu, China.
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Liu Y, Wang Y, Li X, Jia Y, Wang J, Ao X. FOXO3a in cancer drug resistance. Cancer Lett 2022; 540:215724. [DOI: 10.1016/j.canlet.2022.215724] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 05/04/2022] [Accepted: 05/05/2022] [Indexed: 02/07/2023]
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Sharma AR, Banerjee S, Bhattacharya M, Saha A, Lee SS, Chakraborty C. Recent progress of circular RNAs in different types of human cancer: Technological landscape, clinical opportunities and challenges (Review). Int J Oncol 2022; 60:56. [PMID: 35362541 DOI: 10.3892/ijo.2022.5346] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 03/10/2022] [Indexed: 11/11/2022] Open
Abstract
Circular RNAs (circRNAs) are a novel class of endogenous non‑coding RNAs that have been recently regarded as functionally active. CircRNAs are remarkably stable and known to possess several biological functions such as microRNA sponging, regulating transcription and splicing and occasionally acting as polypeptide‑producing templates. CircRNAs show tissue‑specific expression and have been reported to be associated with the progression of several types of malignancies. Given the recent progress in genome sequencing and bioinformatics techniques, a rapid increment in the biological role of circRNAs has been observed. Concurrently, the patent search from different patent databases shows that the patent number of circRNA is increasing very quickly. These phenomena reveal a rapid development of the technological landscape. In the present review, the recent progress on circRNAs in various kinds of cancer has been investigated and their function as biomarkers or therapeutic targets and their technological landscape have been appreciated. A new insight into circRNAs structure and functional capabilities in cancer has been reviewed. Continually increasing knowledge on their critical role during cancer progression is projecting them as biomarkers or therapeutic targets for various kinds of cancer. Thus, recent updates on the functional role of circRNAs in terms of the technological landscape, clinical opportunities (biomarkers and therapeutic targets), and challenges in cancer have been illustrated.
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Affiliation(s)
- Ashish Ranjan Sharma
- Institute for Skeletal Aging and Orthopedic Surgery, Hallym University‑Chuncheon Sacred Heart Hospital, Chuncheon, Gangwon 24252, Republic of Korea
| | - Shreya Banerjee
- Department of Biotechnology, School of Life Science and Biotechnology, Adamas University, Kolkata, West Bengal 700126, India
| | - Manojit Bhattacharya
- Department of Zoology, Fakir Mohan University, Vyasa Vihar, Balasore, Odisha 756020, India
| | - Abinit Saha
- Department of Biotechnology, School of Life Science and Biotechnology, Adamas University, Kolkata, West Bengal 700126, India
| | - Sang-Soo Lee
- Institute for Skeletal Aging and Orthopedic Surgery, Hallym University‑Chuncheon Sacred Heart Hospital, Chuncheon, Gangwon 24252, Republic of Korea
| | - Chiranjib Chakraborty
- Department of Biotechnology, School of Life Science and Biotechnology, Adamas University, Kolkata, West Bengal 700126, India
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35
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Bao G, Zhao F, Wang J, Liu X, Hu J, Shi B, Wen Y, Zhao L, Luo Y, Li S. Characterization of the circRNA–miRNA–mRNA Network to Reveal the Potential Functional ceRNAs Associated With Dynamic Changes in the Meat Quality of the Longissimus Thoracis Muscle in Tibetan Sheep at Different Growth Stages. Front Vet Sci 2022; 9:803758. [PMID: 35433904 PMCID: PMC9011000 DOI: 10.3389/fvets.2022.803758] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 02/23/2022] [Indexed: 01/22/2023] Open
Abstract
Circular RNAs (circRNAs) have a regulatory role in animal skeletal muscle development. In this study, RNA sequencing was performed to reveal the temporal regularity of circRNA expression and the effect of the circRNA–miRNA–mRNA ceRNA regulatory network on the meat quality of longissimus thoracis (LT) muscle in Tibetan sheep at different growth stages (4 months old, 4 m; 1.5 years old, 1.5 y; 3.5 years old, 3.5 y; 6 years old, 6 y). There were differences in the carcass performance and meat quality of Tibetan sheep at different ages. Especially, the meat tenderness significantly decreased (p < 0.05) with the increase of age. GO functional enrichment indicated that the source genes of the DE circRNAs were mainly involved in the protein binding, and myofibril and organelle assembly. Moreover, there was a significant KEGG enrichment in the adenosine 5′-monophosphate (AMP)-activated protein kinase (AMPK) signaling pathway, as well as the calcium signaling pathway, regulating the pluripotency of the stem cells. The circRNA–miRNA–mRNA ceRNA interaction network analysis indicated that circRNAs such as circ_000631, circ_000281, and circ_003400 combined with miR-29-3p and miR-185-5p regulate the expression of LEP, SCD, and FASN related to the transformation of muscle fiber types in the AMPK signaling pathway. The oxidized muscle fibers were transformed into the glycolytic muscle fibers with the increase of age, the content of intramuscular fat (IMF) was lowered, and the diameter of the muscle fiber was larger in the glycolytic muscle fibers, ultimately increasing the meat tenderness. The study revealed the role of the circRNAs in the transformation of skeletal muscle fiber types in Tibetan sheep and its influence on meat quality. It improves our understanding of the role of circRNAs in Tibetan sheep muscle development.
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Affiliation(s)
- Gaoliang Bao
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Fangfang Zhao
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Jiqing Wang
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Xiu Liu
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Jiang Hu
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Bingang Shi
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Yuliang Wen
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Li Zhao
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Yuzhu Luo
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Shaobin Li
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
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Misir S, Wu N, Yang BB. Specific expression and functions of circular RNAs. Cell Death Differ 2022; 29:481-491. [PMID: 35169296 PMCID: PMC8901656 DOI: 10.1038/s41418-022-00948-7] [Citation(s) in RCA: 143] [Impact Index Per Article: 71.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 01/26/2022] [Accepted: 01/27/2022] [Indexed: 02/07/2023] Open
Abstract
In recent years, circular RNAs (circRNAs), a new class of RNA molecules characterized by their covalently closed circular structure, have become a new research paradigm in RNA biology. Many circRNAs are conserved among eukaryotes, localize in specific subcellular compartments, and play different biological roles. Accumulating evidence shows that circRNAs regulate a diversity of cellular processes by acting as miRNA sponges, anchors for circRNA binding proteins (cRBPs), transcriptional regulators, molecular scaffolds, and sources for translation of small proteins/peptides. The emergence of the biological functions of circRNAs has brought a new perspective to our understanding of cellular physiology and disease pathogenesis. Recent studies have shown that the expression of circRNAs is tissue- and cell type-specific and specifically regulated through development or disease progression, where they exert specific biological functions. However, the mechanisms underlying these remain largely unknown. A deeper understanding of how the specific expression of circRNAs is regulated to exert specific biological functions will enable the use of circRNA as a biomarker in clinical practice and the development of new therapeutic approaches. This review aims to summarize recent developments in circRNA biogenesis, functions, and molecular mechanisms. We also provide some specific circRNAs as examples to show their tissue-specific distribution and evaluate the possibility of applying circRNA technologies in molecular research and therapeutics.
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Affiliation(s)
- Sema Misir
- grid.17063.330000 0001 2157 2938Sunnybrook Research Institute, and Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
| | - Nan Wu
- grid.17063.330000 0001 2157 2938Sunnybrook Research Institute, and Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
| | - Burton B. Yang
- grid.17063.330000 0001 2157 2938Sunnybrook Research Institute, and Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
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Singh D, Kesharwani P, Alhakamy NA, Siddique HR. Accentuating CircRNA-miRNA-Transcription Factors Axis: A Conundrum in Cancer Research. Front Pharmacol 2022; 12:784801. [PMID: 35087404 PMCID: PMC8787047 DOI: 10.3389/fphar.2021.784801] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 12/13/2021] [Indexed: 12/20/2022] Open
Abstract
Circular RNAs (circRNAs) are the newly uncovered class of non-coding RNAs being cognized as profound regulators of gene expression in developmental and disease biology. These are the covalently closed RNAs synthesized when the pre-mRNA transcripts undergo a back-splicing event. In recent years, circRNAs are gaining special attention in the scientific world and are no longer considered as "splicing noise" but rather structurally stable molecules having multiple biological functions including acting as miRNA sponges, protein decoys/scaffolds, and regulators of transcription and translation. Further, emerging evidence suggests that circRNAs are also differentially expressed in multiple cancers where they play oncogenic roles. In addition, circRNAs in association with miRNAs change the expression patterns of multiple transcription factors (TFs), which play important roles in cancer. Thus, the circRNA-miRNA-TFs axis is implicated in the progression or suppression of various cancer types and plays a role in cell proliferation, invasion, and metastasis. In this review article, we provide an outline of the biogenesis, localization, and functions of circRNAs specifically in cancer. Also, we highlight the regulatory function of the circRNA-miRNA-TFs axis in the progression or suppression of cancer and the targeting of this axis as a potential therapeutic approach for cancer management. We anticipate that our review will contribute to expanding the knowledge of the research community about this recent and rapidly growing field of circRNAs for further thorough investigation which will surely help in the management of deadly disease cancer.
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Affiliation(s)
- Deepti Singh
- Molecular Cancer Genetics and Translational Research Lab, Section of Genetics, Department of Zoology, Aligarh Muslim University, Aligarh, India
| | - Prashant Kesharwani
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Nabil A. Alhakamy
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Hifzur R. Siddique
- Molecular Cancer Genetics and Translational Research Lab, Section of Genetics, Department of Zoology, Aligarh Muslim University, Aligarh, India
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Zhao Y, Liu YS. Longevity Factor FOXO3: A Key Regulator in Aging-Related Vascular Diseases. Front Cardiovasc Med 2022; 8:778674. [PMID: 35004893 PMCID: PMC8733402 DOI: 10.3389/fcvm.2021.778674] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 12/06/2021] [Indexed: 12/11/2022] Open
Abstract
Forkhead box O3 (FOXO3) has been proposed as a homeostasis regulator, capable of integrating multiple upstream signaling pathways that are sensitive to environmental changes and counteracting their adverse effects due to external changes, such as oxidative stress, metabolic stress and growth factor deprivation. FOXO3 polymorphisms are associated with extreme human longevity. Intriguingly, longevity-associated single nucleotide polymorphisms (SNPs) in human FOXO3 correlate with lower-than-average morbidity from cardiovascular diseases in long-lived people. Emerging evidence indicates that FOXO3 plays a critical role in vascular aging. FOXO3 inactivation is implicated in several aging-related vascular diseases. In experimental studies, FOXO3-engineered human ESC-derived vascular cells improve vascular homeostasis and delay vascular aging. The purpose of this review is to explore how FOXO3 regulates vascular aging and its crucial role in aging-related vascular diseases.
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Affiliation(s)
- Yan Zhao
- Department of Geriatrics, The Second Xiangya Hospital, Central South University, Changsha, China.,Institute of Aging and Age-Related Disease Research, Central South University, Changsha, China
| | - You-Shuo Liu
- Department of Geriatrics, The Second Xiangya Hospital, Central South University, Changsha, China.,Institute of Aging and Age-Related Disease Research, Central South University, Changsha, China
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Cai Zhang, Li B, Huang Y, Gao S, Gao X. Biogenesis, Functions, and Cancer Relationships of a Specific Circular RNA: CircFoxo3. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2021. [DOI: 10.1134/s106816202106025x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Yu C, Hodge AM, Wong EM, Joo JE, Makalic E, Schmidt D, Buchanan DD, Hopper JL, Giles GG, Southey MC, Dugué PA. Association of FOXO3 Blood DNA Methylation with Cancer Risk, Cancer Survival, and Mortality. Cells 2021; 10:cells10123384. [PMID: 34943892 PMCID: PMC8699522 DOI: 10.3390/cells10123384] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/22/2021] [Accepted: 11/26/2021] [Indexed: 12/29/2022] Open
Abstract
Genetic variants in FOXO3 are associated with longevity. Here, we assessed whether blood DNA methylation at FOXO3 was associated with cancer risk, survival, and mortality. We used data from eight prospective case–control studies of breast (n = 409 cases), colorectal (n = 835), gastric (n = 170), kidney (n = 143), lung (n = 332), prostate (n = 869), and urothelial (n = 428) cancer and B-cell lymphoma (n = 438). Case–control pairs were matched on age, sex, country of birth, and smoking (lung cancer study). Conditional logistic regression was used to assess associations between cancer risk and methylation at 45 CpGs of FOXO3 included on the HumanMethylation450 assay. Mixed-effects Cox models were used to estimate hazard ratios (HR) and 95% confidence intervals (CI) for associations with cancer survival (total n = 2286 deaths). Additionally, using data from 1088 older participants, we assessed associations of FOXO3 methylation with overall and cause-specific mortality (n = 354 deaths). Methylation at a CpG in the first exon region of FOXO3 (6:108882981) was associated with gastric cancer survival (HR = 2.39, 95% CI: 1.60–3.56, p = 1.9 × 10−5). Methylation at three CpGs in TSS1500 and gene body was associated with lung cancer survival (p < 6.1 × 10−5). We found no evidence of associations of FOXO3 methylation with cancer risk and mortality. Our findings may contribute to understanding the implication of FOXO3 in longevity.
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Affiliation(s)
- Chenglong Yu
- Precision Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, VIC 3168, Australia; (C.Y.); (E.M.W.); (G.G.G.); (M.C.S.)
| | - Allison M. Hodge
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, VIC 3004, Australia;
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, VIC 3010, Australia; (E.M.); (J.L.H.)
| | - Ee Ming Wong
- Precision Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, VIC 3168, Australia; (C.Y.); (E.M.W.); (G.G.G.); (M.C.S.)
- Department of Clinical Pathology, Melbourne Medical School, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Jihoon Eric Joo
- Colorectal Oncogenomics Group, Department of Clinical Pathology, Melbourne Medical School, The University of Melbourne, Parkville, VIC 3010, Australia; (J.E.J.); (D.D.B.)
- Victorian Comprehensive Cancer Centre, University of Melbourne Centre for Cancer Research, Parkville, VIC 3010, Australia
| | - Enes Makalic
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, VIC 3010, Australia; (E.M.); (J.L.H.)
| | - Daniel Schmidt
- Department of Data Science and AI, Faculty of Information Technology, Monash University, Clayton, VIC 3168, Australia;
| | - Daniel D. Buchanan
- Colorectal Oncogenomics Group, Department of Clinical Pathology, Melbourne Medical School, The University of Melbourne, Parkville, VIC 3010, Australia; (J.E.J.); (D.D.B.)
- Victorian Comprehensive Cancer Centre, University of Melbourne Centre for Cancer Research, Parkville, VIC 3010, Australia
- Genomic Medicine and Family Cancer Clinic, Royal Melbourne Hospital, Parkville, VIC 3000, Australia
| | - John L. Hopper
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, VIC 3010, Australia; (E.M.); (J.L.H.)
| | - Graham G. Giles
- Precision Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, VIC 3168, Australia; (C.Y.); (E.M.W.); (G.G.G.); (M.C.S.)
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, VIC 3004, Australia;
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, VIC 3010, Australia; (E.M.); (J.L.H.)
| | - Melissa C. Southey
- Precision Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, VIC 3168, Australia; (C.Y.); (E.M.W.); (G.G.G.); (M.C.S.)
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, VIC 3004, Australia;
- Department of Clinical Pathology, Melbourne Medical School, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Pierre-Antoine Dugué
- Precision Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, VIC 3168, Australia; (C.Y.); (E.M.W.); (G.G.G.); (M.C.S.)
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, VIC 3004, Australia;
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, VIC 3010, Australia; (E.M.); (J.L.H.)
- Correspondence:
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Fan Z, Wang Q, Deng H. Circ_0011460 upregulates HTRA1 expression by sponging miR-762 to suppress HTR8/SVneo cell growth, migration, and invasion. Am J Reprod Immunol 2021; 86:e13485. [PMID: 34270834 DOI: 10.1111/aji.13485] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 06/02/2021] [Accepted: 07/14/2021] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Aberrant expression of circular RNAs (circRNAs) during placental development could affect fetal growth and contribute to preeclampsia (PE). Circ_0011460 was found to be differentially expressed in placental samples of PE. However, the exact function and mechanism of circ_0011460 in PE process remain largely undefined. METHODS Levels of circ_0011460, microRNA (miR)-762, and high-temperature requirement-A serine peptidase 1 (HTRA1) were detected using quantitative real-time polymerase chain reaction and Western blot. In vitro experiments in HTR8/SVneo cells were conducted using cell counting kit-8, wound healing, transwell, flow cytometry and Western blot assays. The direct interactions between miR-762 and circ_0011460 or HTRA1 were verified using dual-luciferase reporter, RNA immunoprecipitation (RIP) and RNA pull-down assays. RESULTS Circ_0011460 possessed a loop structure and was highly expressed in placental tissues of PE patients. Overexpression of circ_0011460 greatly suppressed HTR8/SVneo cell proliferation, migration, and invasion, and accelerated cell apoptosis. While circ_0011460 knockdown yielded the opposite trends on above biological behaviors. Mechanistically, we confirmed that circ_0011460 could up-regulate HTRA1 expression via serving as a sponge of miR-762. Further rescue studies demonstrated that circ_0011460 exerted its roles via targeting miR-762, and miR-762 promoted HTR8/SVneo cell growth, migration and invasion via regulating HTRA1. CONCLUSION In all, circ_0011460 suppressed HTR8/SVneo cell growth, migration, and invasion via miR-762/HTRA1 axis, suggesting a new insight into the pathogenesis of PE.
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Affiliation(s)
- Zhongyan Fan
- Departement of Obstetrics and Gynecology, Shengzhou People's Hospital (the First Affiliated Hospital of Zhejiang University Shengzhou Branch, Shengzhou, China
| | - Qiming Wang
- Department of Obstetrics and Gynaecology, Ningbo Women and Children's Hospital, Ningbo, China
| | - Hui Deng
- Maternal-Fetal Laboratory, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Pseudogene Annexin A2 Pseudogene 1 Contributes to Hepatocellular Carcinoma Progression by Modulating Its Parental Gene ANXA2 via miRNA-376a-3p. Dig Dis Sci 2021; 66:3903-3915. [PMID: 33398718 DOI: 10.1007/s10620-020-06734-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 11/18/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Pseudogenes are defined as key regulators in cancer initiation and progression. But their biological function and clinical significance in hepatocellular carcinoma (HCC) remain to be elucidated. In the current study, we identified a novel pseudogene, Annexin A2 pseudogene 1 (ANXA2P1), in HCC and explored its underlining molecular mechanism. METHODS AND RESULTS We analyzed the expression pattern of ANXA2P1 in a TCGA dataset and an HCC sample cohort and evaluated its clinical significance. The biological effects on HCC cells proliferation, migration, invasion and epithelial-mesenchymal transition (EMT) process were assessed by Cell Counting Kit-8 assay, Transwell assay and Western blot, respectively. The ANXA2P1/miR-376a-3p/ANXA2 axis was determined by bioinformatics analysis and dual-luciferase reporter assays. ANXA2P1 exerted as an oncogene that was significantly overexpressed in HCC tissues and was associated with disease progression and unfavorable prognosis of HCC patients. ANXA2P1 knockdown suppressed cell growth, cell migration and invasion and reversed EMT phenotype in HCC. Mechanistically, ANXA2P1 acts as a competing endogenous RNA for miR-376a-3p, thereby leading to the upregulation of its cognate gene ANXA2. CONCLUSIONS ANXA2P1/miR-376a-3p/ANXA2 axis plays an important role in the progression of HCC. Our findings may provide valuable therapeutic target for treating HCC.
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Papaspyropoulos A, Hazapis O, Lagopati N, Polyzou A, Papanastasiou AD, Liontos M, Gorgoulis VG, Kotsinas A. The Role of Circular RNAs in DNA Damage Response and Repair. Cancers (Basel) 2021; 13:cancers13215352. [PMID: 34771517 PMCID: PMC8582540 DOI: 10.3390/cancers13215352] [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: 09/08/2021] [Revised: 10/15/2021] [Accepted: 10/15/2021] [Indexed: 12/12/2022] Open
Abstract
Circular RNAs (circRNA) comprise a distinct class of non-coding RNAs that are abundantly expressed in the cell. CircRNAs have the capacity to regulate gene expression by interacting with regulatory proteins and/or other classes of RNAs. While a vast number of circRNAs have been discovered, the majority still remains poorly characterized. Particularly, there is no detailed information on the identity and functional role of circRNAs that are transcribed from genes encoding components of the DNA damage response and repair (DDRR) network. In this article, we not only review the available published information on DDRR-related circRNAs, but also conduct a bioinformatic analysis on data obtained from public repositories to uncover deposited, yet uncharacterized circRNAs derived from components of the DDRR network. Finally, we interrogate for potential targets that are regulated by this class of molecules and look into potential functional implications.
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Affiliation(s)
- Angelos Papaspyropoulos
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
- Biomedical Research Foundation, Academy of Athens, GR-11527 Athens, Greece
| | - Orsalia Hazapis
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
| | - Nefeli Lagopati
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
- Biomedical Research Foundation, Academy of Athens, GR-11527 Athens, Greece
| | - Aikaterini Polyzou
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
| | - Anastasios D. Papanastasiou
- Department of Biomedical Sciences, University of West Attica, GR-12462 Athens, Greece;
- Histopathology Unit, Biomedical Sciences Research Center ‘Alexander Fleming’, GR-16672 Vari, Greece
| | - Michalis Liontos
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
- Oncology Unit, Department of Clinical Therapeutics, Medical School, National and Kapodistrian University of Athens, Alexandra Hospital, GR-11528 Athens, Greece
| | - Vassilis G. Gorgoulis
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
- Biomedical Research Foundation, Academy of Athens, GR-11527 Athens, Greece
- Molecular and Clinical Cancer Sciences, Manchester Cancer Research Centre, Manchester Academic Health Sciences Centre, University of Manchester, Manchester M20 4GJ, UK
- Center for New Biotechnologies and Precision Medicine, Medical School, National and Kapodistrian University of Athens, GR-11527 Athens, Greece
- Faculty of Health and Medical Sciences, University of Surrey, Surrey GU2 7YH, UK
- Correspondence: (V.G.G.); (A.K.); Tel.: +30-210-746-2352 (V.G.G.); +30-210-746-2420 (A.K.)
| | - Athanassios Kotsinas
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
- Correspondence: (V.G.G.); (A.K.); Tel.: +30-210-746-2352 (V.G.G.); +30-210-746-2420 (A.K.)
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Kurosaki M, Terao M, Liu D, Zanetti A, Guarrera L, Bolis M, Gianni’ M, Paroni G, Goodall GJ, Garattini E. A DOCK1 Gene-Derived Circular RNA Is Highly Expressed in Luminal Mammary Tumours and Is Involved in the Epithelial Differentiation, Growth, and Motility of Breast Cancer Cells. Cancers (Basel) 2021; 13:cancers13215325. [PMID: 34771489 PMCID: PMC8582367 DOI: 10.3390/cancers13215325] [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: 09/08/2021] [Revised: 10/19/2021] [Accepted: 10/20/2021] [Indexed: 12/20/2022] Open
Abstract
Circular RNAs are regulatory molecules involved in numerous cellular processes and may be involved in tumour growth and diffusion. Here, we define the expression of 15 selected circular RNAs, which may control the process of epithelial-to-mesenchymal transition, using a panel of 18 breast cancer cell lines recapitulating the heterogeneity of these tumours and consisting of three groups according to the mesenchymal/epithelial phenotype. A circular RNA from the DOCK1 gene (hsa_circ_0020397) shows low/undetectable levels in triple-negative mesenchymal cell lines, while its content is high in epithelial cell lines, independent of estrogen receptor or HER2 positivity. RNA-sequencing experiments performed on the triple-negative/mesenchymal MDA-MB-231 and MDA-MB-157 cell lines engineered to overexpress hsa_circ_0020397 demonstrate that the circRNA influences the expression of 110 common genes. Pathway analysis of these genes indicates that overexpression of the circular RNA differentiates the two mesenchymal cell lines along the epithelial pathway and increases cell-to-cell adhesion. This is accompanied by growth inhibition and a reduction in the random/directional motility of the cell lines. The upregulated AGR2, ENPP1, and PPP1R9A genes as well as the downregulated APOE, AQP3, CD99L2, and IGFBP4 genes show an opposite regulation by hsa_circ_0020397 silencing in luminal CAMA1 cells. The results provide novel insights into the role played by specific circular RNAs in the generation/progression of breast cancer.
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Affiliation(s)
- Mami Kurosaki
- Laboratory of Molecular Biology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milano, Italy; (M.K.); (M.T.); (A.Z.); (L.G.); (M.B.); (M.G.); (G.P.)
| | - Mineko Terao
- Laboratory of Molecular Biology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milano, Italy; (M.K.); (M.T.); (A.Z.); (L.G.); (M.B.); (M.G.); (G.P.)
| | - Dawei Liu
- Centre for Cancer Biology, An Alliance of SA Pathology and University of South Australia, Adelaide, SA 5000, Australia; (D.L.); (G.J.G.)
| | - Adriana Zanetti
- Laboratory of Molecular Biology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milano, Italy; (M.K.); (M.T.); (A.Z.); (L.G.); (M.B.); (M.G.); (G.P.)
| | - Luca Guarrera
- Laboratory of Molecular Biology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milano, Italy; (M.K.); (M.T.); (A.Z.); (L.G.); (M.B.); (M.G.); (G.P.)
| | - Marco Bolis
- Laboratory of Molecular Biology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milano, Italy; (M.K.); (M.T.); (A.Z.); (L.G.); (M.B.); (M.G.); (G.P.)
- Institute of Oncology Research, USI, University of Southern Switzerland, 6500 Bellinzona, Switzerland
| | - Maurizio Gianni’
- Laboratory of Molecular Biology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milano, Italy; (M.K.); (M.T.); (A.Z.); (L.G.); (M.B.); (M.G.); (G.P.)
| | - Gabriela Paroni
- Laboratory of Molecular Biology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milano, Italy; (M.K.); (M.T.); (A.Z.); (L.G.); (M.B.); (M.G.); (G.P.)
| | - Gregory J. Goodall
- Centre for Cancer Biology, An Alliance of SA Pathology and University of South Australia, Adelaide, SA 5000, Australia; (D.L.); (G.J.G.)
- Department of Medicine, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Enrico Garattini
- Laboratory of Molecular Biology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milano, Italy; (M.K.); (M.T.); (A.Z.); (L.G.); (M.B.); (M.G.); (G.P.)
- Correspondence: ; Tel.: +39-02-39014533
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Ruan Y, Li H, Cao X, Meng S, Jia R, Pu L, Fu H, Jin Z. Inhibition of the lncRNA DANCR attenuates cardiomyocyte injury induced by oxygen-glucose deprivation via the miR-19a-3p/MAPK1 axis. Acta Biochim Biophys Sin (Shanghai) 2021; 53:1377-1386. [PMID: 34515297 DOI: 10.1093/abbs/gmab110] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 08/03/2021] [Accepted: 08/11/2021] [Indexed: 02/07/2023] Open
Abstract
Long noncoding RNAs (lncRNAs) have been considered as crucial regulators of acute myocardial infarction (AMI). In this study, to analyze the effect of differentiation antagonizing nonprotein coding RNA (DANCR) of lncRNA on cardiomyocyte damage in AMI, cardiomyocyte injury was induced by oxygen-glucose deprivation (OGD). Cell counting kit-8 (CCK-8) assay and flow cytometry were used to assess cell viability and apoptosis, respectively. Quantitative real-time PCR was used to measure the expression levels of DANCR and miR-19a-3p. Bioinformatics analysis and luciferase gene reporter assay were utilized to explore the relationship among DANCR, miR-19a-3p, and mitogen-activated protein kinase 1 (MAPK1). CCK-8 and TUNEL assays were used to explore the effects of DANCR alone or plus miR-19a-3p on the viability and apoptosis of OGD/R-exposed HL-1 cells. Western blot analysis was used to detect changes in the MAPK1/ERK1/2 pathway in HL-1 cells. We found that DANCR expression and miR-19a-3p level are negatively correlated as DANCR expression is increased, while miR-19a-3p level is decreased in AMI patients' serum and OGD/R-exposed HL-1 cells. DANCR knockdown increased miR-19a-3p level, and miR-19a-3p inhibition increased DANCR expression. Moreover, DANCR directly binds to miR-19a-3p. DANCR knockdown reduced viability but induced apoptosis in OGD/R-exposed HL-1 cells, while miR-19a-3p inhibition weakens these effects. Furthermore, MAPK1 is a target of miR-19a-3p. miR-19a-3p overexpression decreases MAPK1 and ERK1/2 in HL-1 cells, while miR-19a-3p inhibition increases MAPK1 and ERK1/2 in HL-1 cells. Moreover, DANCR knockdown reduces myocardium apoptosis in mice with the left anterior descending artery ligated. DANCR knockdown effectively restores myocardial cell apoptosis by regulating the miR-19a-3p/MAPK1/ERK1/2 axis.
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Affiliation(s)
- Yang Ruan
- Department of Cardiology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, China
| | - Hong Li
- Ward Three, Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - Xiaojing Cao
- Department of Cardiology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, China
| | - Shuai Meng
- Department of Cardiology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, China
| | - Ruofei Jia
- Department of Cardiology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, China
| | - Lianmei Pu
- Department of Emergency Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - Hao Fu
- Department of Emergency Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - Zening Jin
- Department of Cardiology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, China
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Zhao Z, Bai Y, Tian H, Shi B, Li X, Luo Y, Wang J, Hu J, Abbas Raza SH. Interference with ACSL1 gene in bovine adipocytes: Transcriptome profiling of circRNA related to unsaturated fatty acid production. Genomics 2021; 113:3967-3977. [PMID: 34601049 DOI: 10.1016/j.ygeno.2021.09.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 07/23/2021] [Accepted: 09/27/2021] [Indexed: 01/12/2023]
Abstract
Long-chain acyl-CoA synthetase 1 (ACSL1) is a member of the acyl-CoA synthetase family that plays a vital role in lipid metabolism. We have previously shown that the ACSL1 gene regulates the composition of unsaturated fatty acids (UFAs) in bovine skeletal muscle, which in turn regulates the fatty acid synthesis and the generation of lipid droplets. Here, we used RNA-Seq to screen circRNAs that regulated the expression of ACSL1 gene and other UFA synthesis-related genes by RNA interference and noninterference in bovine adipocytes. The results of KEGG pathway analysis showed that the parental genes of differentially expressed (DE)-circRNAs were primarily enriched in the adipocytokine signaling pathway. The prediction results showed that novel_circ_0004855, novel_circ_0001507, novel_circ_0001731, novel_circ_0005276, novel_circ_0002060, novel_circ_0005405 and novel_circ_0004254 regulated UFA synthesis-related genes by interacting with the related miRNAs. These results could help expand our knowledge of the molecular mechanisms of circRNAs in the regulation of UFA synthesis in bovine adipocytes.
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Affiliation(s)
- Zhidong Zhao
- College of Animal Science and Technology, Gansu Key Laboratory of Herbivorous Animal Biotechnology, Gansu Agricultural University, Lanzhou 730070, China
| | - Yanbin Bai
- College of Animal Science and Technology, Gansu Key Laboratory of Herbivorous Animal Biotechnology, Gansu Agricultural University, Lanzhou 730070, China
| | - Hongshan Tian
- College of Animal Science and Technology, Gansu Key Laboratory of Herbivorous Animal Biotechnology, Gansu Agricultural University, Lanzhou 730070, China
| | - Bingang Shi
- College of Animal Science and Technology, Gansu Key Laboratory of Herbivorous Animal Biotechnology, Gansu Agricultural University, Lanzhou 730070, China
| | - Xupeng Li
- College of Animal Science and Technology, Gansu Key Laboratory of Herbivorous Animal Biotechnology, Gansu Agricultural University, Lanzhou 730070, China
| | - Yuzhu Luo
- College of Animal Science and Technology, Gansu Key Laboratory of Herbivorous Animal Biotechnology, Gansu Agricultural University, Lanzhou 730070, China
| | - Jiqing Wang
- College of Animal Science and Technology, Gansu Key Laboratory of Herbivorous Animal Biotechnology, Gansu Agricultural University, Lanzhou 730070, China
| | - Jiang Hu
- College of Animal Science and Technology, Gansu Key Laboratory of Herbivorous Animal Biotechnology, Gansu Agricultural University, Lanzhou 730070, China.
| | - Sayed Haidar Abbas Raza
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
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The Emerging Functions of Circular RNAs in Bladder Cancer. Cancers (Basel) 2021; 13:cancers13184618. [PMID: 34572845 PMCID: PMC8464819 DOI: 10.3390/cancers13184618] [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: 08/16/2021] [Revised: 09/10/2021] [Accepted: 09/10/2021] [Indexed: 12/17/2022] Open
Abstract
Simple Summary The role of circular RNAs has made breakthroughs in understanding the mechanisms of tumor development. Bladder cancer has an increasing incidence, high recurrence rate, high metastatic potential, poor prognosis, and susceptibility to chemotherapy resistance. Thus, it is essential to identify molecules related to the tumorigenesis of bladder cancer. In this review, we summarize current knowledge about the expression of circular RNAs in bladder cancer and their implications in vesical carcinogenesis. We further discuss the limitations of existing studies and provide an outlook for future studies in the hopes of better revealing the association between circular RNAs and bladder cancer. Abstract Bladder cancer (BC) is among the top ten most common cancer types worldwide and is a serious threat to human health. Circular RNAs (circRNAs) are a new class of non-coding RNAs generated by covalently closed loops through back-splicing. As an emerging research hotspot, circRNAs have attracted considerable attention due to their high conservation, stability, abundance, and specificity of tissue development. Accumulating evidence has revealed different form of circRNAs are closely related to the malignant phenotype, prognosis and chemotherapy resistance of BC, suggesting that different circRNAs may be promising biomarkers and have therapeutic significance in BC. The intention of this review is to summarize the mechanisms of circRNA-mediated BC progression and their diagnostic and prognostic value as biomarkers, as well as to further explore their roles in chemotherapy resistance.
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Ru W, Qi A, Shen X, Yue B, Zhang X, Wang J, Cao H, Chen H. The circular RNA circCPE regulates myoblast development by sponging miR-138. J Anim Sci Biotechnol 2021; 12:102. [PMID: 34493338 PMCID: PMC8424951 DOI: 10.1186/s40104-021-00618-7] [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: 03/10/2021] [Accepted: 07/05/2021] [Indexed: 01/19/2023] Open
Abstract
Background Skeletal muscle development, a long-term and complex process, is controlled by a set of the myogenic genes. Circular RNAs (circRNAs), a class of noncoding RNA, have been shown to regulate various biological processes. Recent studies indicate circRNAs may be involved in myogenesis, but the role and regulatory mechanism of circRNAs in myogenesis is largely unknown. In the present study, circCPE was firstly found to promote the bovine myoblast proliferation and inhibit cell apoptosis and differentiation by influencing the expression of FOXC1 in a miR138-mediated manner. And in vivo experiments revealed that overexpression of circCPE attenuates skeletal muscle regeneration. Results We identified a novel circular RNA circCPE by analyzing circRNAs sequencing data of bovine muscle tissue. Sequencing verification, RNase R treatment and Actinomycin D treatment confirmed the circular nature of circCPE in bovine muscle. Functional assays showed that overexpression of circCPE could inhibit bovine myoblast apoptosis and differentiation, as well as facilitate cell proliferation. Moreover, in vivo experiments revealed that overexpression of circCPE attenuates skeletal muscle regeneration. In consideration of circRNA action as miRNAs sponge, we found that circCPE harbors miR-138 binding sites and absorbed miR-138. Mechanistically, the rescue experiments showed that the overexpression of circCPE can counteract the inhibitory effect of miR-138 on the cell proliferation and the accelerated effects on the differentiation and apoptosis. Subsequently, we found that circCPE sequester the inhibitory effect of miR-138 on FOXC1 so as to involve in myogenesis. Conclusions Collectively, we constructed a novel circCPE/miR-138/FOXC1 regulatory network in bovine myogenesis, which further provide stronger evidence that circRNA involved in muscle development acting as miRNA sponge. Supplementary Information The online version contains supplementary material available at 10.1186/s40104-021-00618-7.
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Affiliation(s)
- Wenxiu Ru
- Key laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Ao Qi
- Key laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Xuemei Shen
- Key laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Binglin Yue
- Key laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Xiaoyan Zhang
- Key laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Jian Wang
- Key laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Hui Cao
- Shaanxi Kingbull Livestock co.,LTD, Yangling, 712100, Shaanxi, China
| | - Hong Chen
- Key laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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Su Y, Zhu C, Wang B, Zheng H, McAlister V, Lacefield JC, Quan D, Mele T, Greasley A, Liu K, Zheng X. Circular RNA Foxo3 in cardiac ischemia-reperfusion injury in heart transplantation: A new regulator and target. Am J Transplant 2021; 21:2992-3004. [PMID: 33382168 DOI: 10.1111/ajt.16475] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 12/03/2020] [Accepted: 12/23/2020] [Indexed: 01/25/2023]
Abstract
Ischemia-reperfusion (I/R) injury occurring in heart transplantation (HT) remains as a leading cause of transplant heart graft failure. Circular RNAs (circRNAs) play important roles in gene regulation and diseases. However, the impact of circRNAs on I/R injury during HT remains unknown. This study aims to investigate the role of circular RNA Foxo3 (circFoxo3) in I/R injury in HT. Using an in vivo mouse HT model and an in vitro cardiomyocyte culture model, we demonstrated that circFoxo3 is significantly upregulated in I/R-injured hearts and hypoxia/reoxygenation (H/R)-damaged cardiomyocytes. Knockdown of circFoxo3 using siRNA not only reduces cell apoptosis and death, mitochondrial damage, and expression of apoptosis/death-related genes in vitro, but also protects heart grafts from prolonged cold I/R injury in HT. We also show that circFoxo3 interacts with Foxo3 proteins and inhibits the phosphorylation of Foxo3 and that it indirectly affects the expression of miR-433 and miR-136. In conclusion, circRNA is involved in I/R injury in HT and knockdown of circFoxo3 with siRNA can reduce I/R injury and improve heart graft function through interaction with Foxo3. This study highlights that circRNA is a new type of molecular regulator and a potential target for preventing I/R injury in HT.
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Affiliation(s)
- Yale Su
- Department of Cardiovascular Surgery, The Second Hospital of Jilin University, Changchun, China.,Department of Pathology, Western University, London, Ontario, Canada
| | - Cuilin Zhu
- Department of Cardiovascular Surgery, The Second Hospital of Jilin University, Changchun, China.,Department of Pathology, Western University, London, Ontario, Canada
| | - Bowen Wang
- Department of Cardiovascular Surgery, The Second Hospital of Jilin University, Changchun, China.,Department of Pathology, Western University, London, Ontario, Canada
| | - Hao Zheng
- Department of Pathology, Western University, London, Ontario, Canada
| | - Vivian McAlister
- Department of Surgery, Western University, London, Ontario, Canada.,London Health Sciences Centre, London, Ontario, Canada
| | - James C Lacefield
- Department of Medical Biophysics, Western University, London, Ontario, Canada.,Department of Electrical & Computer Engineering, Western University, London, Ontario, Canada.,Robarts Research Institute, Western University, London, Ontario, Canada.,Lawson Health Research Institute, London, Ontario, Canada
| | - Douglas Quan
- Department of Surgery, Western University, London, Ontario, Canada.,London Health Sciences Centre, London, Ontario, Canada
| | - Tina Mele
- Department of Surgery, Western University, London, Ontario, Canada.,London Health Sciences Centre, London, Ontario, Canada
| | - Adam Greasley
- Department of Pathology, Western University, London, Ontario, Canada
| | - Kexiang Liu
- Department of Cardiovascular Surgery, The Second Hospital of Jilin University, Changchun, China
| | - Xiufen Zheng
- Department of Pathology, Western University, London, Ontario, Canada.,Department of Surgery, Western University, London, Ontario, Canada.,Lawson Health Research Institute, London, Ontario, Canada.,Department of Oncology, Western University, London, Canada
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50
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Shen H, Liu B, Xu J, Zhang B, Wang Y, Shi L, Cai X. Circular RNAs: characteristics, biogenesis, mechanisms and functions in liver cancer. J Hematol Oncol 2021; 14:134. [PMID: 34461958 PMCID: PMC8407006 DOI: 10.1186/s13045-021-01145-8] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 08/21/2021] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) is one of the most common malignancies globally. Despite aggressive and multimodal treatment regimens, the overall survival of HCC patients remains poor. MAIN: Circular RNAs (circRNAs) are noncoding RNAs (ncRNAs) with covalently closed structures and tissue- or organ-specific expression patterns in eukaryotes. They are highly stable and have important biological functions, including acting as microRNA sponges, protein scaffolds, transcription regulators, translation templates and interacting with RNA-binding protein. Recent advances have indicated that circRNAs present abnormal expression in HCC tissues and that their dysregulation contributes to HCC initiation and progression. Furthermore, researchers have revealed that some circRNAs might serve as diagnostic biomarkers or drug targets in clinical settings. In this review, we systematically evaluate the characteristics, biogenesis, mechanisms and functions of circRNAs in HCC and further discuss the current shortcomings and potential directions of prospective studies on liver cancer-related circRNAs. CONCLUSION CircRNAs are a novel class of ncRNAs that play a significant role in HCC initiation and progression, but their internal mechanisms and clinical applications need further investigation.
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Affiliation(s)
- Hao Shen
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310016, China
| | - Boqiang Liu
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310016, China
| | - Junjie Xu
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310016, China
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, 310016, China
| | - Bin Zhang
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310016, China
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, 310016, China
| | - Yifan Wang
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310016, China.
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, 310016, China.
| | - Liang Shi
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310016, China.
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, 310016, China.
| | - Xiujun Cai
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310016, China.
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, 310016, China.
- Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Zhejiang University, Hangzhou, 310016, China.
- Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Zhejiang University, Hangzhou, 310016, China.
- Zhejiang University Cancer Center, Zhejiang University, Hangzhou, 310016, China.
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