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Feng D, Li J, Guo L, Liu J, Wang S, Ma X, Song Y, Liu J, Hao E. DDX3X alleviates doxorubicin-induced cardiotoxicity by regulating Wnt/β-catenin signaling pathway in an in vitro model. J Biochem Mol Toxicol 2022; 36:e23077. [PMID: 35467791 PMCID: PMC9539463 DOI: 10.1002/jbt.23077] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/21/2022] [Accepted: 04/01/2022] [Indexed: 11/05/2022]
Abstract
The life-threatening adverse effects of doxorubicin (Dox) caused by its cardiotoxic properties limit its clinical application. DDX3X has been shown to participate in a variety of physiological processes, and it acts as a regulator of Wnt/β-catenin signaling. However, the role of DDX3X in Dox-induced cardiotoxicity (DIC) remains unclear. In this study, we found that DDX3X expression was significantly decreased in H9c2 cardiomyocytes treated with Dox. Ddx3x knockdown and RK-33 (DDX3X ATPase activity inhibitor) pretreatment exacerbated cardiomyocyte apoptosis and mitochondrial dysfunction induced by Dox treatment. In contrast, Ddx3x overexpression ameliorated the DIC response. Moreover, Wnt/β-catenin signaling in cardiomyocytes treated with Dox was suppressed, but this suppression was reversed by Ddx3x overexpression. Overall, this study demonstrated that DDX3X plays a protective role in DIC by activating Wnt/β-catenin signaling.
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Affiliation(s)
- Dandan Feng
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, Cheeloo College of MedicineShandong UniversityJinanChina
| | - Jiang Li
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, Cheeloo College of MedicineShandong UniversityJinanChina
| | - Liang Guo
- Department of AnesthesiologyThe First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan HospitalJinanChina
| | - Jing Liu
- Laboratory of Microvascular Medicine, Medical Research Center, Shandong Provincial Qianfoshan HospitalThe First Affiliated Hospital of Shandong First Medical UniversityJinanChina
| | - Shaochen Wang
- Department of Cardiology, Shandong Provincial Qianfoshan HospitalShandong First Medical UniversityJinanChina
| | - Xiuyuan Ma
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, Cheeloo College of MedicineShandong UniversityJinanChina
| | - Yunxuan Song
- Department of Cardiology, Shandong Provincial Qianfoshan HospitalShandong First Medical UniversityJinanChina
| | - Ju Liu
- Laboratory of Microvascular Medicine, Medical Research Center, Shandong Provincial Qianfoshan HospitalThe First Affiliated Hospital of Shandong First Medical UniversityJinanChina
| | - Enkui Hao
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, Cheeloo College of MedicineShandong UniversityJinanChina
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Guo Z, Zhang Y, Xu W, Zhang X, Jiang J. Engineered exosome-mediated delivery of circDIDO1 inhibits gastric cancer progression via regulation of MiR-1307-3p/SOCS2 Axis. J Transl Med 2022; 20:326. [PMID: 35864511 PMCID: PMC9306104 DOI: 10.1186/s12967-022-03527-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 07/08/2022] [Indexed: 01/15/2023] Open
Abstract
Background Our previous study has identified a novel circRNA (circDIDO1) that is down-regulated in gastric cancer (GC) and significantly inhibits GC progression. The purpose of this study is to identify the molecular mechanism for circDIDO1 and to evaluate the therapeutic effect of circDIDO1 in GC. Methods By combining bioinformatic analysis with RNA sequencing data, we predicted the potential target of circDIDO1 and further validated the regulatory mechanisms for its tumor suppressor function in GC. RIP assay, luciferase reporter assay and in vitro cell function assays were performed to analyze circDIDO1-regulated downstream target genes. For the therapeutic study, circDIDO1-loaded, RGD-modified exosomes (RGD-Exo-circDIDO1) were constructed and its anti-tumor efficacy and biological safety were evaluated in vitro and in vivo. Results CircDIDO1 inhibited GC progression by regulating the expression of the signal transducer inhibitor SOSC2 through sponging miR-1307-3p. Overexpression of circDIDO1 or SOSC2 antagonized the oncogenic role of miR-1307-3p. RGD-Exo-circDIDO1 could efficiently deliver circDIDO1 to increase SOCS2 expression in GC cells. Compared with PBS and RGD-Exo-vector treatment, RGD-Exo-circDIDO1 treatment significantly inhibited the proliferation, migration and invasion of GC cells while promoted cell apoptosis. The therapeutic efficacy of RGD-Exo-circDIDO1 was further confirmed in a mouse xenograft tumor model. In addition, major tissues including the heart, liver, spleen, lungs and kidneys showed no obvious histopathological abnormalities or lesions in the RGD-Exo-circDIDO1 treated group. Conclusion Our findings revealed that circDIDO1 suppressed the progression of GC via modulating the miR-1307-3p/SOSC2 axis. Systemic administration of RGD modified, circDIDO1 loaded exosomes repressed the tumorigenicity and aggressiveness of GC both in vitro and in vivo, suggesting that RGD-Exo-circDIDO1 could be used as a feasible nanomedicine for GC therapy. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-022-03527-z.
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Affiliation(s)
- Zhen Guo
- Aoyang Institute of Cancer, Affiliated Aoyang Hospital of Jiangsu University, 279 Jingang Road, Suzhou, 215600, Jiangsu, China.,Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, China
| | - Yu Zhang
- Aoyang Institute of Cancer, Affiliated Aoyang Hospital of Jiangsu University, 279 Jingang Road, Suzhou, 215600, Jiangsu, China.,Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, China
| | - Wenrong Xu
- Aoyang Institute of Cancer, Affiliated Aoyang Hospital of Jiangsu University, 279 Jingang Road, Suzhou, 215600, Jiangsu, China.,Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, China
| | - Xu Zhang
- Aoyang Institute of Cancer, Affiliated Aoyang Hospital of Jiangsu University, 279 Jingang Road, Suzhou, 215600, Jiangsu, China. .,Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, China.
| | - Jiajia Jiang
- Aoyang Institute of Cancer, Affiliated Aoyang Hospital of Jiangsu University, 279 Jingang Road, Suzhou, 215600, Jiangsu, China. .,Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, China.
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53
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Zhou X, Du J. CircRNAs: novel therapeutic targets in multiple myeloma. Mol Biol Rep 2022; 49:10667-10676. [PMID: 35729478 DOI: 10.1007/s11033-022-07668-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 05/31/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND Circular RNA (circRNA) is a type of non-coding RNA that has recently attracted the attention of researchers. Multiple myeloma (MM) is a hematological malignancy with a dismal prognosis that indicates a pressing need for better treatment alternatives, particularly in terms of biological indicators. According to recent research findings, the presence of circRNA is also closely related to the incidence and progression of malignant hemopathy. There have been, however, only a few investigations of circRNA in MM. MATERIAL AND METHODS This review will be on the biological properties and functions of circRNA in MM and a discussion of the clinical utility of circRNA in the diagnosis, prognosis, and treatment of MM. CONCLUSIONS CircRNA is involved in gene transcription, translation, and epigenetic modification as well as the regulation of cancer cell proliferation, invasion, and metastasis, and hence, promotes or inhibits the occurrence and progression of MM. Therefore, circRNA holds promise as a potential future MM biomarker.
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Affiliation(s)
- Xinyi Zhou
- Department of Hematology, Myeloma and Lymphoma Center, Shanghai Changzheng Hospital, Naval Medical University, No. 415 Fengyang Road, Huangpu Area, Shanghai, 200003, China
| | - Juan Du
- Department of Hematology, Myeloma and Lymphoma Center, Shanghai Changzheng Hospital, Naval Medical University, No. 415 Fengyang Road, Huangpu Area, Shanghai, 200003, China.
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Yu B, Zhou S, Long D, Ning Y, Yao H, Zhou E, Wang Y. DDX55 promotes HCC progression via interacting with BRD4 and participating in exosome-mediated cell-cell communication. Cancer Sci 2022; 113:3002-3017. [PMID: 35514200 PMCID: PMC9459289 DOI: 10.1111/cas.15393] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 04/26/2022] [Accepted: 04/30/2022] [Indexed: 11/27/2022] Open
Abstract
The involvement of DEAD‐box helicase 55 (DDX55) in oncogenesis has been suggested, but its biological role in hepatocellular carcinoma (HCC) remains unknown. The present study verified the upregulation of DDX55 in HCC tissues compared with non‐tumor controls. DDX55 displayed the highest prognostic values among the DEAD‐box protein family for recurrence‐free survival and overall survival of HCC patients. In addition, the effects of DDX55 in the promotion of HCC cell proliferation, migration, and invasion were determined ex vivo and in vivo. Mechanistically, we revealed that DDX55 could interact with BRD4 to form a transcriptional regulatory complex that positively regulated PIK3CA transcription. Following that, β‐catenin signaling was activated in a PI3K/Akt/GSK‐3β dependent manner, thus inducing cell cycle progression and epithelial–mesenchymal transition. Intriguingly, both DDX55 mRNA and protein were identified in the exosomes derived from HCC cells. Exosomal DDX55 was implicated in intercellular communication between HCC cells with high or low DDX55 levels and between HCC cells and endothelial cells, thereby promoting the malignant phenotype of HCC cells and angiogenesis. In conclusion, DDX55 may be a valuable prognostic biomarker and therapeutic target in HCC.
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Affiliation(s)
- Bin Yu
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, National Quality Control Center for Donated Organ Procurement, Hubei Key Laboratory of Medical Technology on Transplantation, Hubei Clinical Research Center for Natural Polymer Biological Liver, Engineering Center of Natural Polymer-based Medical Materials, Hubei, Wuhan, China
| | - Shujun Zhou
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, National Quality Control Center for Donated Organ Procurement, Hubei Key Laboratory of Medical Technology on Transplantation, Hubei Clinical Research Center for Natural Polymer Biological Liver, Engineering Center of Natural Polymer-based Medical Materials, Hubei, Wuhan, China
| | - Dakun Long
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, National Quality Control Center for Donated Organ Procurement, Hubei Key Laboratory of Medical Technology on Transplantation, Hubei Clinical Research Center for Natural Polymer Biological Liver, Engineering Center of Natural Polymer-based Medical Materials, Hubei, Wuhan, China
| | - Yuxiang Ning
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, National Quality Control Center for Donated Organ Procurement, Hubei Key Laboratory of Medical Technology on Transplantation, Hubei Clinical Research Center for Natural Polymer Biological Liver, Engineering Center of Natural Polymer-based Medical Materials, Hubei, Wuhan, China
| | - Hanlin Yao
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, National Quality Control Center for Donated Organ Procurement, Hubei Key Laboratory of Medical Technology on Transplantation, Hubei Clinical Research Center for Natural Polymer Biological Liver, Engineering Center of Natural Polymer-based Medical Materials, Hubei, Wuhan, China
| | - Encheng Zhou
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, National Quality Control Center for Donated Organ Procurement, Hubei Key Laboratory of Medical Technology on Transplantation, Hubei Clinical Research Center for Natural Polymer Biological Liver, Engineering Center of Natural Polymer-based Medical Materials, Hubei, Wuhan, China
| | - Yanfeng Wang
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, National Quality Control Center for Donated Organ Procurement, Hubei Key Laboratory of Medical Technology on Transplantation, Hubei Clinical Research Center for Natural Polymer Biological Liver, Engineering Center of Natural Polymer-based Medical Materials, Hubei, Wuhan, China
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55
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Yang Y, Wang D, Tao K, Wang G. Circular RNA circLRCH3 Inhibits Proliferation, Migration, and Invasion of Colorectal Cancer Cells Through miRNA-223/LPP Axis. Onco Targets Ther 2022; 15:541-554. [PMID: 35611368 PMCID: PMC9124491 DOI: 10.2147/ott.s366605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 05/08/2022] [Indexed: 12/24/2022] Open
Abstract
Purpose Colorectal cancer (CRC) is one of the most common carcinomas worldwide with a high mortality rate. Numerous studies suggest that circular RNA (circRNA) plays a crucial role in the progression of various carcinomas, including CRC. The present work focused on exploring the role and underlying molecular mechanism of action of the circRNA circLRCH3 in CRC. Methods Real-time reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was conducted to detect expression levels of circLRCH3, miR-233, and lipoma preferred partner (LPP). The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay was used to measure the proliferation of CRC cells and the transwell assay was used to evaluate cell migration and invasion capacity. A flow cytometry assay was used to analyze the effect of circLRCH3 on the distribution of the cell cycle and apoptosis of CRC cells. The expression of LPP was analyzed using Western blotting or an RT-qPCR assay. The relationship between miR-223 and circLRCH3, and that between miR-223 and LPP, was predicted and examined using bioinformatics analysis and luciferase reporter gene experiments. A xenograft tumor formation assay was also performed. Results We found that the expression level of circLRCH3 was downregulated in CRC cells and negatively correlated with miR-223. The overexpression of circLRCH3 or silencing of miR-223 inhibited the growth, invasion, and migration of CRC cells, but promoted their apoptosis. In contrast, overexpression of miR-223 and depletion of LPP severally abrogated the tumor suppressive roles of circLRCH3 and miR-223 knockdown in CRC cells in vitro. The xenograft experiments in nude mice also proved the antitumor effect of circLRCH3. Conclusion These results suggested that the circLRCH3/miR-223/LPP axis likely plays a critical role in CRC.
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Affiliation(s)
- Yiming Yang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430033, People’s Republic of China
| | - Di Wang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430033, People’s Republic of China
| | - Kaixiong Tao
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430033, People’s Republic of China
| | - Guobin Wang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430033, People’s Republic of China
- Correspondence: Guobin Wang, Email
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Chen C, Chang X, Zhang S, Zhao Q, Lei C. CircRNA CTNNB1 (circCTNNB1) ameliorates cerebral ischemia/reperfusion injury by sponging miR-96-5p to up-regulate scavenger receptor class B type 1 (SRB1) expression. Bioengineered 2022; 13:10258-10273. [PMID: 35435123 PMCID: PMC9162012 DOI: 10.1080/21655979.2022.2061304] [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] [Indexed: 12/24/2022] Open
Abstract
Emerging studies show that circRNA catenin beta 1 (circCTNNB1) plays a critical role in cancer. However, the expression and function of circCTNNB1 in cerebral ischemia/reperfusion injury (IRI) have not been reported. The present study discovered that circCTNNB1 and scavenger receptor class B type 1 (SRB1) expression levels were significantly down-regulated in mouse astrocytes (mAS) treated with oxygen glucose deprivation and reperfusion (OGD/R), and similar results were observed in a mouse middle cerebral artery occlusion model. Overexpression of circCTNNB1 alleviated cell apoptosis, oxidative stress and the inflammatory response induced by OGD/R in vitro. Up-regulation of circCTNNB1 increased SRB1 expression levels to protect mAS cells from OGD/R-induced damage. CircCTNNB1 and SRB1 interacted with miR-96-5p, and the overexpression of miR-96-5p efficiently reversed the function of circCTNNB1 in OGD/R-treated mAS cells. CircCTNNB1 protected against cerebral ischemia-reperfusion injury by up-regulating SRB1 in vivo. In conclusion, our findings suggest that circCTNNB1 acts as a competitive endogenous RNA for miR-96-5p to alleviate cerebral IRI, which provides novel evidence that circCTNNB1 and SRB1 may be biomarkers and therapeutic targets for cerebral IRI.
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Affiliation(s)
- Chun Chen
- Department of Neurology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Xiaolong Chang
- Department of Neurology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Shifei Zhang
- Department of Neurology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Qi Zhao
- Department of Neurology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Chunyan Lei
- Department of Neurology, First Affiliated Hospital of Kunming Medical University, Kunming, China
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Zhang Y, Lin W, Jiang W, Wang Z. MicroRNA-18 facilitates the stemness of gastric cancer by downregulating HMGB3 though targeting Meis2. Bioengineered 2022; 13:9959-9972. [PMID: 35416122 PMCID: PMC9161930 DOI: 10.1080/21655979.2022.2062529] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
The recurrence and metastasis of gastric cancer are related to the stemness of gastric cancer cells. Researches have shown that miR-18 level is negatively correlated to the occurrence and development of certain cancer types. However, the effects of miR-18 on the stemness of gastric cancer remain uncertain. In this research, gastric cancer cell lines with stable overexpression of miR-18 were constructed through lentivirus infection. CCK-8 assay, RT-qPCR, Western blot, flow cytometry, and in vivo tumorigenesis assays were performed to evaluate the effects of miR-18 on the stemness of gastric cancer cells. Moreover, luciferase reporter assays found that Meis2 was the target of miR-18. Furthermore, we also found that the low-expressed oncogene HMGB3 is involved in this miR-18/Meis2 axis to further promote the stemness of gastric cancer cells. These findings suggest that the miR-18/Meis2/HMGB3 axis may be potential prognostic indicators for patients with gastric cancer.
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Affiliation(s)
- Yingjun Zhang
- Oncology Department of Radiotherapy, Zhongshan Hospital of Xiamen University, Xiamen, Fujian China
| | - Weijian Lin
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, Xiamen, Fujian, China
| | - Weiping Jiang
- Oncology Department of Radiotherapy, Zhongshan Hospital of Xiamen University, Xiamen, Fujian China
| | - Zhenfa Wang
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, Xiamen, Fujian, China
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Wang Z, Sun A, Yan A, Yao J, Huang H, Gao Z, Han T, Gu J, Li N, Wu H, Li K. Circular RNA MTCL1 promotes advanced laryngeal squamous cell carcinoma progression by inhibiting C1QBP ubiquitin degradation and mediating beta-catenin activation. Mol Cancer 2022; 21:92. [PMID: 35366893 PMCID: PMC8976408 DOI: 10.1186/s12943-022-01570-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 03/25/2022] [Indexed: 11/13/2022] Open
Abstract
Background Circular RNAs (circRNAs) are involved in regulatory processes of ubiquitination and deubiquitination in various tumors at post-transcriptional epigenetic modification level. However, the underlying mechanism and its biological functions of circRNAs in the advanced laryngeal squamous cell carcinoma (LSCC) remain obscure. Methods RNA sequencing and quantitative real-time PCR (qRT-PCR) assays were applied to screen for circRNAs differentially expressed in LSCC tissues and cell lines. The candidate RNA-binding proteins and target signalling pathway were detected by RNA pull-down and mass spectrometry, in situ hybridization (ISH), immunohistochemistry (IHC), qRT-PCR assays, and bioinformatics analysis. The functional roles of these molecules were investigated using in vitro and in vivo experiments including EdU, transwell, wound healing, western blot assays, and the xenograft mice models. The molecular mechanisms were identified using RNA pull-down assays, RNA immunoprecipitation (RIP), Co-IP, ISH, Ubiquitination assay, bioinformatics analysis, and the rescue experiments. Results Here, we unveil that microtubule cross-linking factor 1 circRNA (circMTCL1, circ0000825) exerts its critical oncogenic functions by promoting complement C1q-binding protein (C1QBP)-dependent ubiquitin degradation and subsequently activating Wnt/β-catenin signalling in laryngeal carcinoma initiation and development. Specifically, circMTCL1 was remarkably up-regulated in the paired tissues of patients with LSCC (n = 67), which predicted a worse clinical outcome. Functionally, circMTCL1 exerted oncogenic biological charactersistics by promoting cell proliferative capability and invasive and migrative abilities. Ectopic circMTCL1 augumented cell proliferation, migration, and invasion of LSCC cells, and this effect could be reversed by C1QBP knocking down in vitro and in vivo. Mechanistically, circMTCL1 directly recruited C1QBP protein by harboring the specific recognized sequence (+ 159 − + 210), thereby accelerating the translation of C1QBP expression by inhibiting its ubiquitin–proteasome-mediated degradation. Importantly, the direct interaction of C1QBP with β-catenin protein was enhanced via suppressing the β-catenin phosphorylation and accelerating its accumulation in cytoplasm and nucleus. Conclusion Our findings manifested a novel circMTCL1-C1QBP-β-catenin signaling axis involving in LSCC tumorigenesis and progression, which shed new light on circRNAs-ubiquitous acidic glycoprotein mediated ubiquitin degradation and provided strategies and targets in the therapeutic intervention of LSCC. Supplementary Information The online version contains supplementary material available at 10.1186/s12943-022-01570-4.
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Duan JL, Chen W, Xie JJ, Zhang ML, Nie RC, Liang H, Mei J, Han K, Xiang ZC, Wang FW, Teng K, Chen RX, Deng MH, Yin YX, Zhang N, Xie D, Cai MY. A novel peptide encoded by N6-methyladenosine modified circMAP3K4 prevents apoptosis in hepatocellular carcinoma. Mol Cancer 2022; 21:93. [PMID: 35366894 PMCID: PMC8976336 DOI: 10.1186/s12943-022-01537-5] [Citation(s) in RCA: 63] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 02/08/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Circular RNAs (circRNAs) regulate various biological activities and have been shown to play crucial roles in hepatocellular carcinoma (HCC) progression. However, only a few coding circRNAs have been identified in cancers, and their roles in HCC remain elusive. This study aimed to identify coding circRNAs and explore their function in HCC. METHODS CircMAP3K4 was selected from the CIRCpedia database. We performed a series of experiments to determine the characteristics and coding capacity of circMAP3K4. We then used in vivo and in vitro assays to investigate the biological function and mechanism of circMAP3K4 and its protein product, circMAP3K4-455aa, in HCC. RESULTS We found circMAP3K4 to be an upregulated circRNA with coding potential in HCC. IGF2BP1 recognized the circMAP3K4 N6-methyladenosine modification and promoted its translation into circMAP3K4-455aa. Functionally, circMAP3K4-455aa prevented cisplatin-induced apoptosis in HCC cells by interacting with AIF, thus protecting AIF from cleavage and decreasing its nuclear distribution. Moreover, circMAP3K4-455aa was degraded through the ubiquitin-proteasome E3 ligase MIB1 pathway. Clinically, a high level of circMAP3K4 is an independent prognostic factor for adverse overall survival and adverse disease-free survival of HCC patients. CONCLUSIONS CircMAP3K4 is a highly expressed circRNA in HCC. Driven by m6A modification, circMAP3K4 encoded circMAP3K4-455aa, protected HCC cells from cisplatin exposure, and predicted worse prognosis of HCC patients. Targeting circMAP3K4-455aa may provide a new therapeutic strategy for HCC patients, especially for those with chemoresistance. CircMAP3K4 is a highly expressed circRNA in HCC. Driven by m6A modification, IGF2BP1 facilitates circMAP3K4 peptide translation, then the circMAP3K4 peptide inhibits AIF cleavage and nuclear distribution, preventing HCC cells from cell death under stress and promoting HCC progression.
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Affiliation(s)
- Jin-Ling Duan
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China
- Department of Pathology, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China
| | - Wei Chen
- Center of Hepato-Pancreatico-Biliary Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, Guangdong, China
| | - Juan-Juan Xie
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China
| | - Mao-Lei Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Sun Yat-sen University, Guangdong Provincial Key Laboratory of Brain Function and Disease, Guangdong Translational Medicine Innovation Platform, Guangzhou, Guangdong, 510080, China
| | - Run-Cong Nie
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China
- Department of Surgery, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China
| | - Hu Liang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China
- Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China
| | - Jie Mei
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China
- Department of Surgery, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China
| | - Kai Han
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China
- Department of Surgery, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China
| | - Zhi-Cheng Xiang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China
- Department of Pathology, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China
| | - Feng-Wei Wang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China
| | - Kai Teng
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, 250117, Shandong, China
| | - Ri-Xin Chen
- Department of Thoracic Surgery, Guangdong Provincial People's Hospital, Research Center of Medical Sciences, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, Guangdong, China
| | - Min-Hua Deng
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China
- Department of Surgery, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China
| | - Yi-Xin Yin
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China
| | - Nu Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Sun Yat-sen University, Guangdong Provincial Key Laboratory of Brain Function and Disease, Guangdong Translational Medicine Innovation Platform, Guangzhou, Guangdong, 510080, China.
| | - Dan Xie
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China.
- Department of Pathology, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China.
| | - Mu-Yan Cai
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China.
- Department of Pathology, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China.
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Zhang JY, Du Y, Gong LP, Shao YT, Pan LJ, Feng ZY, Pan YH, Huang JT, Wen JY, Sun LP, Chen GF, Chen JN, Shao CK. ebv-circRPMS1 promotes the progression of EBV-associated gastric carcinoma via Sam68-dependent activation of METTL3. Cancer Lett 2022; 535:215646. [PMID: 35304258 DOI: 10.1016/j.canlet.2022.215646] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/12/2022] [Accepted: 03/13/2022] [Indexed: 12/12/2022]
Abstract
Epstein-Barr virus (EBV) is a tumor virus that is associated with a variety of neoplasms, including EBV-associated gastric carcinoma (EBVaGC). Recently, EBV was reported to generate various circular RNAs (circRNAs). CircRNAs are important regulators of tumorigenesis by modulating the malignant behaviors of tumor cells. However, to date, the functions of ebv-circRNAs in EBVaGC remain poorly understood. In the present study, we observed high ebv-circRPMS1 expression in EBVaGC and showed that ebv-circRPMS1 promoted the proliferation, migration, and invasion and inhibited the apoptosis of EBVaGC cells. In addition, METTL3 was upregulated in GC cells overexpressing ebv-circRPMS1. Mechanistically, ebv-circRPMS1 bound to Sam68 to facilitate its physical interaction with the METTL3 promotor, resulting in the transactivation of METTL3 and cancer progression. In clinical EBVaGC samples, ebv-circRPMS1 was associated with distant metastasis and a poor prognosis. Based on these findings, ebv-circRPMS1 contributed to EBVaGC progression by recruiting Sam68 to the METTL3 promoter to induce METTL3 expression. ebv-circRPMS1, Sam68, and METTL3 might serve as therapeutic targets for EBVaGC.
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Affiliation(s)
- Jing-Yue Zhang
- Department of Pathology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China
| | - Yu Du
- Department of Pathology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China
| | - Li-Ping Gong
- Department of Pathology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China
| | - Yi-Ting Shao
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, 510055, China
| | - Li-Jie Pan
- Vaccine Research of Sun Yat-sen University, Guangzhou, 510630, China
| | - Zhi-Ying Feng
- Department of Pathology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China
| | - Yu-Hang Pan
- Department of Pathology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China
| | - Jun-Ting Huang
- Department of Pathology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China; The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510182, China
| | - Jing-Yun Wen
- Department of Medical Oncology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China
| | - Li-Ping Sun
- Department of Pathology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China
| | - Gao-Feng Chen
- Department of Pathology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China
| | - Jian-Ning Chen
- Department of Pathology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China.
| | - Chun-Kui Shao
- Department of Pathology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China.
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Wang J, Xia D, Lin Y, Xu W, Wu Y, Chen J, Chu J, Shen P, Weng S, Wang X, Shen L, Fan S, Shen S. Oxidative stress-induced circKIF18A downregulation impairs MCM7-mediated anti-senescence in intervertebral disc degeneration. Exp Mol Med 2022; 54:285-297. [PMID: 35332256 PMCID: PMC8979962 DOI: 10.1038/s12276-022-00732-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 09/10/2021] [Accepted: 09/29/2021] [Indexed: 11/30/2022] Open
Abstract
Low back pain, triggered by intervertebral disc degeneration (IVDD), is one of the most common causes of disability and financial expenditure worldwide. However, except for surgical interventions, effective medical treatment to prevent the progression of IVDD is lacking. This study aimed to investigate the effects of circKIF18A, a novel circRNA, on IVDD progression and to explore its underlying mechanism in IVDD. In this study, we found that oxidative stress was positively correlated with nucleus pulposus cell (NPC) senescence in IVDD and that circKIF18A was downregulated in IVDD and attenuated senescent phenotypes such as cell cycle arrest and extracellular matrix degradation in NPCs. Mechanistically, circKIF18A competitively suppressed ubiquitin-mediated proteasomal degradation of MCM7, and the protective effects of circKIF18A on NPCs were partially mediated by MCM7 under oxidative stress. Intradiscal injection of adenoviral circKIF18A ameliorated IVDD in a rat model. This study revealed that circKIF18A regulates NPC degeneration by stabilizing MCM7 and identified a novel signaling pathway, the circKIF18A-MCM7 axis, for anti-senescence molecular therapy in IVDD. A non-coding circular RNA molecule that prevents spinal cells from undergoing premature ageing offers a new therapeutic target for treating intervertebral disc degeneration (IVDD), a major cause of lower back pain. Shuying Shen of Zhejiang University School of Medicine, China, and colleagues took samples from the soft, gelatinous central portion of the intervertebral disk, the so-called nucleus pulposus, and looked for circular RNAs with high expression levels in healthy individuals and low levels in people with IVDD. They identified a specific RNA in this way, and showed how this regulatory molecule promotes the activity of a protein involved in enhancing the proliferative capacity of nucleus pulposus tissues. In rats, injections of a gene therapy vector encoding this RNA helped ameliorate signs of IVDD, highlighting the potential for similar therapeutic strategies in people with IVDD.
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Affiliation(s)
- Jianle Wang
- Department of Orthopedics, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 310020, Hangzhou, Zhejiang, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, 310020, Hangzhou, Zhejiang, China
| | - Dongdong Xia
- Department of Orthopedics, Ningbo First Hospital, 315010, Ningbo, Zhejiang, China
| | - Yan Lin
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 325088, Wenzhou, Zhejiang Province, China.,Key Laboratory of Orthopaedics of Zhejiang Province, 325088, Wenzhou, Zhejiang Province, China
| | - Wenbin Xu
- Department of Orthopedics, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 310020, Hangzhou, Zhejiang, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, 310020, Hangzhou, Zhejiang, China
| | - Yaosen Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 325088, Wenzhou, Zhejiang Province, China.,Key Laboratory of Orthopaedics of Zhejiang Province, 325088, Wenzhou, Zhejiang Province, China
| | - Jiaoxiang Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 325088, Wenzhou, Zhejiang Province, China.,Key Laboratory of Orthopaedics of Zhejiang Province, 325088, Wenzhou, Zhejiang Province, China
| | - Junjie Chu
- Department of Head and Neck Surgery, Institute of Micro-Invasive Surgery of Zhejiang University, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 310020, Hangzhou, Zhejiang, China
| | - Panyang Shen
- Department of Orthopedics, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 310020, Hangzhou, Zhejiang, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, 310020, Hangzhou, Zhejiang, China
| | - Sheji Weng
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 325088, Wenzhou, Zhejiang Province, China.,Key Laboratory of Orthopaedics of Zhejiang Province, 325088, Wenzhou, Zhejiang Province, China
| | - Xiangyang Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 325088, Wenzhou, Zhejiang Province, China. .,Key Laboratory of Orthopaedics of Zhejiang Province, 325088, Wenzhou, Zhejiang Province, China.
| | - Lifeng Shen
- Department of Orthopedics, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 310020, Hangzhou, Zhejiang, China. .,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, 310020, Hangzhou, Zhejiang, China.
| | - Shunwu Fan
- Department of Orthopedics, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 310020, Hangzhou, Zhejiang, China. .,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, 310020, Hangzhou, Zhejiang, China.
| | - Shuying Shen
- Department of Orthopedics, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 310020, Hangzhou, Zhejiang, China. .,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, 310020, Hangzhou, Zhejiang, China.
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Exosomal circRELL1 serves as a miR-637 sponge to modulate gastric cancer progression via regulating autophagy activation. Cell Death Dis 2022; 13:56. [PMID: 35027539 PMCID: PMC8758736 DOI: 10.1038/s41419-021-04364-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 09/27/2021] [Accepted: 10/20/2021] [Indexed: 12/11/2022]
Abstract
Circular RNAs (circRNAs) play a vital role in the occurrence and development of tumors, including gastric cancer (GC). However, there are still many circRNAs related to GC whose functions and molecular mechanisms remain undetermined. Herein, we discover circRNA RELL1, which has not been investigated in GC, and it is markedly downregulated in GC tissues, which is related with poor prognosis, more pronounced lymph node metastasis and poor TNM stage. After confirming the circular structure of circRELL1, we found that circRELL1 could block cell proliferation, invasion, migration, and anti-apoptosis in patients with GC by a series of in vivo and in vitro function-related studies. Further mechanism investigation demonstrated that circRELL1 could sponge miR-637 and indirectly unregulated the expression of EPHB3 via modulating autophagy activation in GC. Additionally, circRELL1 can be transmitted by exosomal communication, and exosomal circRELL1 suppressed the malignant behavior of GC in vivo and in vitro. Taken together, this study elucidates the suppressive roles of circRELL1/miR-637/EPHB3 axis through autophagy activation in GC progression, inspiring for further understanding of the underlying molecular mechanisms of GC and providing a promising novel diagnostic circulating biomarker and therapeutic target in GC.
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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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Wong CH, Lou UK, Fung FKC, Tong JHM, Zhang CH, To KF, Chan SL, Chen Y. CircRTN4 promotes pancreatic cancer progression through a novel CircRNA-miRNA-lncRNA pathway and stabilizing epithelial-mesenchymal transition protein. Mol Cancer 2022; 21:10. [PMID: 34983537 PMCID: PMC8725379 DOI: 10.1186/s12943-021-01481-w] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 12/13/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Circular RNAs (circRNAs) play important roles in many biological processes. However, the detailed mechanism underlying the critical roles of circRNAs in cancer remains largely unexplored. We aim to explore the molecular mechanisms of circRTN4 with critical roles in pancreatic ductal adenocarcinoma (PDAC). METHODS CircRTN4 expression level was examined in PDAC primary tumors. The oncogenic roles of circRTN4 in PDAC tumor growth and metastasis were studied in mouse tumor models. Bioinformatics analysis, luciferase assay and miRNA pulldown assay were performed to study the novel circRTN4-miRNA-lncRNA pathway. To identify circRTN4-interacting proteins, we performed circRNA-pulldown and mass spectrometry in PDAC cells. Protein stability assay and 3-Dimensional structure modeling were performed to reveal the role of circRTN4 in stabilizing RAB11FIP1. RESULTS CircRTN4 was significantly upregulated in primary tumors from PDAC patients. In vitro and in vivo functional studies revealed that circRTN4 promoted PDAC tumor growth and liver metastasis. Mechanistically, circRTN4 interacted with tumor suppressor miR-497-5p in PDAC cells. CircRTN4 knockdown upregulated miR-497-5p to inhibit the oncogenic lncRNA HOTTIP expression. Furthermore, we identified critical circRTN4-intercting proteins by circRNA-pulldown in PDAC cells. CircRTN4 interacted with important epithelial-mesenchymal transition (EMT)- driver RAB11FIP1 to block its ubiquitination site. We found that circRTN4 knockdown promoted the degradation of RAB11FIP1 by increasing its ubiquitination. Also, circRTN4 knockdown inhibited the expression of RAB11FIP1-regulating EMT-markers Slug, Snai1, Twist, Zeb1 and N-cadherin in PDAC. CONCLUSION The upregulated circRTN4 promotes tumor growth and liver metastasis in PDAC through the novel circRTN4-miR-497-5p-HOTTIP pathway. Also, circRTN4 stabilizes RAB11FIP1 to contribute EMT.
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Affiliation(s)
- Chi Hin Wong
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
| | - Ut Kei Lou
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
| | - Frederic Khe-Cheong Fung
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
| | - Joanna H M Tong
- Department of Anatomical and Cellular Pathology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Chang-Hua Zhang
- Digestive Medicine Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
| | - Ka-Fai To
- Department of Anatomical and Cellular Pathology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Stephen Lam Chan
- Department of Clinical Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Yangchao Chen
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, NT, Hong Kong.
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, 518087, China.
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Xiong L, Chen L, Wu L, He W, Chen D, Peng Z, Li J, Zhu X, Su L, Li Y, Gong Y, Xiao H. Lipotoxicity-induced circGlis3 impairs beta cell function and is transmitted by exosomes to promote islet endothelial cell dysfunction. Diabetologia 2022; 65:188-205. [PMID: 34751796 DOI: 10.1007/s00125-021-05591-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 07/30/2021] [Indexed: 11/26/2022]
Abstract
AIMS/HYPOTHESIS Lipotoxicity constitutes the major driving force for type 2 diabetes. Circular RNAs (circRNAs) play important roles in regulating beta cell function and exosomes are essential mediators of intercellular communication. The role of exosomal circRNAs in type 2 diabetes remains largely unknown. We aimed to examine whether lipotoxicity induces dysregulation of circRNAs in beta cell-derived exosomes and to determine the contribution of exosomal circRNAs to the development of type 2 diabetes. METHODS Exosomes were extracted from MIN6 cells treated with palmitate or BSA, and RNA sequencing was performed. CircGlis3 (Gli-similar 3) expression level was validated by qPCR. The impact of circGlis3 on beta cell function and the deleterious effects of exosomal circGlis3 on islet endothelial cells (islet ECs) were investigated in vitro and in vivo in human and mouse models by gain or loss of function assays. The molecular mechanism of circGlis3 was explored by RNA pull-down and immunoprecipitation assays. RESULTS Beta cell-derived exosomal circGlis3 was significantly upregulated under lipotoxic conditions, and exosomal circGlis3 levels were also elevated in the serum of mouse models of diabetes and participants with type 2 diabetes. CircGlis3 participated in lipotoxicity-induced beta cell dysfunction in vitro and in vivo. Moreover, beta cell-derived exosomal circGlis3 could be transferred to islet ECs and reduce the cell viability, cell migration and angiogenesis of islet ECs. Mechanistically, circGlis3 promoted the degradation of glucocorticoid modulatory element-binding protein 1 (GMEB1) by facilitating the interaction between GMEB1 and mindbomb E3 ubiquitin protein ligase 2 (MIB2), thus suppressing the phosphorylation of heat shock protein 27 (HSP27). CONCLUSIONS/INTERPRETATION Our study points to the involvement of circGlis3 in diabetes development, and exosomal circGlis3 transfer as a communication mode between beta cells and islet ECs, suggesting that circGlis3 might be a potential biomarker and therapeutic target for type 2 diabetes. DATA AVAILABILITY The RNA-sequencing data have been deposited in the NCBI Sequence Read Archive (SRA) database, with accession number PRJNA689673. Mass spectrometry data are available via ProteomeXchange with identifier PXD024693.
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Affiliation(s)
- Li Xiong
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Li Chen
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Liting Wu
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Weiman He
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Dubo Chen
- Department of Clinical Laboratory, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Zishan Peng
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jin Li
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
- Department of Geriatrics, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Xiaonan Zhu
- Department of Pharmacology, Zhong‑Shan School of Medicine, Sun Yat‑sen University, Guangzhou, Guangdong, China
| | - Lei Su
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
- Department of Geriatrics, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yanbing Li
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yingying Gong
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China.
- Department of Geriatrics, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China.
| | - Haipeng Xiao
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China.
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Gu Y, Wang G, Ran B. Has_circ_0010220 regulates the miR-574-3p/IL-6 axis to increase doxorubicin resistance in osteosarcoma. Hum Exp Toxicol 2022; 41:9603271221131307. [DOI: 10.1177/09603271221131307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background Osteosarcoma (OS) is the most common primary bone malignancy. It has an aggressive nature and produces drug resistance in diseased patients, which in turn causes obstacles in treating cancer with chemotherapy. The objective of our investigation was to analyze the function and hsa_circ_0010220 mechanism in doxorubicin (DOX) resistance to OS. Methods The hsa_circ_0010220, IL-6, and miR-574-3p levels in OS diseased tissues and cell resistance towards DOX drug were elucidated by qRT-PCR and Elisa assay. The DOX half-inhibitory concentration (IC50) was quantified by Cell Counting Kit-8. For this study, we used RNA pull-down, RNA immunoprecipitation, and a dual-luciferase reporter experiment to identify the proteins that interacted with has_circ_0010220, IL-6, and miR-574-3p in OS cells that have developed resistance towards DOX. Results The results indicated upregulated Hsa_circ_0010220 and IL-6 expression, However, DOX-resistant OS tissues and cells showed a downregulation of miR-574-3p. Reducing DOX resistance in vitro was achieved by silencing Has_circ_0010220. Further, by sponging miR-574-3p, increasing has_circ_0010220 boosted DOX resistance. However, miR-574-3p bound to IL-6 and inhibited DOX resistance. Additionally, it was discovered that hsa_circ_0010220 sponged miR-574-3p for upregulating IL-6 expression. Conclusions Hsa_circ_0010220 encouraged OS resistance to DOX by miR-574-3p/IL-6 axis regulation, suggesting its potency as a promising biomarker for treating OS.
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Affiliation(s)
- Yanglin Gu
- Department of Orthopedics, The Affiliated Wuxi No. 2 People’s Hospital of Nanjing Medical University, Wuxi, Jiangsu, P.R. China
| | - Guangchang Wang
- Department of Orthopedics, The Affiliated Wuxi No. 2 People’s Hospital of Nanjing Medical University, Wuxi, Jiangsu, P.R. China
| | - Baocai Ran
- Department of Clinical Laboratory, The Affiliated Wuxi No. 2 People’s Hospital of Nanjing Medical University, Wuxi, Jiangsu, P.R. China
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Tumor Suppressive Circular RNA-102450: Development of a Novel Diagnostic Procedure for Lymph Node Metastasis from Oral Cancer. Cancers (Basel) 2021; 13:cancers13225708. [PMID: 34830863 PMCID: PMC8616294 DOI: 10.3390/cancers13225708] [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: 10/07/2021] [Revised: 11/06/2021] [Accepted: 11/09/2021] [Indexed: 01/01/2023] Open
Abstract
Circular RNAs (circRNAs), which form as covalently closed loop structures, have several biological functions such as regulation of cellular behavior by adsorbing microRNAs. However, there is limited information of circRNAs in oral squamous cell carcinoma (OSCC). Here, we aimed to elucidate the roles of aberrantly expressed circRNAs in OSCC. CircRNA microarray showed that circRNA-102450 was down-regulated in OSCC cells. Clinical validation of circRNA-102450 was performed using highly sensitive droplet digital PCR in preoperative liquid biopsy samples from 30 OSCC patients. Interestingly, none of 16 studied patients with high circRNA-102450 had regional lymph node metastasis (RLNM), whereas 4 of 14 studied patients (28.5%) with low expression had pathologically proven RLNM. Overexpressed circRNA-102450 significantly inhibited the tumor metastatic properties of cell proliferation, migration, and invasion. Furthermore, circRNA-102450 directly bound to, and consequently down-regulated, miR-1178 in OSCC cells. Taken together, circRNA-102450 has a tumor suppressive effect via the circRNA-102450/miR-1178 axis and may be a novel potential marker of RLNM in OSCC patients.
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Zhou H, Liu W, Zhou Y, Hong Z, Ni J, Zhang X, Li Z, Li M, He W, Zhang D, Chen X, Zhu J. Therapeutic inhibition of GAS6-AS1/YBX1/MYC axis suppresses cell propagation and disease progression of acute myeloid leukemia. J Exp Clin Cancer Res 2021; 40:353. [PMID: 34753494 PMCID: PMC8576903 DOI: 10.1186/s13046-021-02145-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 10/15/2021] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Acute myeloid leukemia (AML) is the most common type of leukemia in adults. Its therapy has not significantly improved during the past four decades despite intense research efforts. New molecularly targeted therapies are in great need. The proto-oncogene c-Myc (MYC) is an attractive target due to its transactivation role in multiple signaling cascades. Deregulation of the MYC is considered one of a series of oncogenic events required for tumorigenesis. However, limited knowledge is available on which mechanism underlie MYC dysregulation and how long non-coding RNAs (lncRNAs) are involved in MYC dysregulation in AML. METHODS AML microarray chips and public datasets were screened to identify novel lncRNA GAS6-AS1 was dysregulated in AML. Gain or loss of functional leukemia cell models were produced, and in vitro and in vivo experiments were applied to demonstrate its leukemogenic phenotypes. Interactive network analyses were performed to define intrinsic mechanism. RESULTS We identified GAS6-AS1 was overexpressed in AML, and its aberrant function lead to more aggressive leukemia phenotypes and poorer survival outcomes. We revealed that GAS6-AS1 directly binds Y-box binding protein 1 (YBX1) to facilitate its interaction with MYC, leading to MYC transactivation and upregulation of IL1R1, RAB27B and other MYC target genes associated with leukemia progression. Further, lentiviral-based GAS6-AS1 silencing inhibited leukemia progression in vivo. CONCLUSIONS Our findings revealed a previously unappreciated role of GAS6-AS1 as an oncogenic lncRNA in AML progression and prognostic prediction. Importantly, we demonstrated that therapeutic targeting of the GAS6-AS1/YBX1/MYC axis inhibits AML cellular propagation and disease progression. Our insight in lncRNA associated MYC-driven leukemogenesis may contribute to develop new anti-leukemia treatment strategies.
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Affiliation(s)
- Hao Zhou
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Wei Liu
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yongming Zhou
- Department of Hematology, The Affiliated Tianyou Hospital, Wuhan University of Science and Technology, Wuhan, 430064, China
| | - Zhenya Hong
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jian Ni
- Department of Oncology Clinical Pharmacy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Xiaoping Zhang
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Ziping Li
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Mengyuan Li
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Wenjuan He
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Donghua Zhang
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xuexing Chen
- Department of Hematology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, 441000, China.
| | - Jianhua Zhu
- Laboratory of Clinical Immunology, Wuhan No. 1 Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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Targeting DDX3X Helicase Activity with BA103 Shows Promising Therapeutic Effects in Preclinical Glioblastoma Models. Cancers (Basel) 2021; 13:cancers13215569. [PMID: 34771731 PMCID: PMC8582824 DOI: 10.3390/cancers13215569] [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: 09/27/2021] [Revised: 10/29/2021] [Accepted: 10/30/2021] [Indexed: 01/16/2023] Open
Abstract
Simple Summary In the last ten years, the human helicase protein DDX3X turned out to be an extremely interesting target for the development of potential anticancer drugs. Herein, we discovered BA103, a novel specific inhibitor of the helicase binding site of DDX3X, which is characterized by broad-spectrum anticancer activity. BA103 revealed promising tolerability in fibroblasts and good pharmacokinetic properties. Furthermore, BA103 was able to decrease the expression of β-catenin and to reduce tumor migration. Its capability to pass the blood–brain barrier led us to investigate its potential against glioblastoma, which is a high refractory disease with poor prognosis. High efficacy was proven in both xenograft and orthotopic animal models. Abstract DDX3X is an ATP-dependent RNA helicase that has recently attracted interest for its involvement in viral replication and oncogenic progression. Starting from hit compounds previously identified by our group, we have designed and synthesized a new series of DDX3X inhibitors that effectively blocked its helicase activity. These new compounds were able to inhibit the proliferation of cell lines from different cancer types, also in DDX3X low-expressing cancer cell lines. According to the absorption, distribution, metabolism, elimination properties, and antitumoral activity, compound BA103 was chosen to be further investigated in glioblastoma models. BA103 determined a significant reduction in the proliferation and migration of U87 and U251 cells, downregulating the oncogenic protein β-catenin. An in vivo evaluation demonstrated that BA103 was able to reach the brain and reduce the tumor growth in xenograft and orthotopic models without evident side effects. This study represents the first demonstration that DDX3X-targeted small molecules are feasible and promising drugs also in glioblastoma.
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Liu QL, Zhang Z, Wei X, Zhou ZG. Noncoding RNAs in tumor metastasis: molecular and clinical perspectives. Cell Mol Life Sci 2021; 78:6823-6850. [PMID: 34499209 PMCID: PMC11073083 DOI: 10.1007/s00018-021-03929-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 08/12/2021] [Accepted: 08/26/2021] [Indexed: 02/08/2023]
Abstract
Metastasis is the main culprit of cancer-associated mortality and involves a complex and multistage process termed the metastatic cascade, which requires tumor cells to detach from the primary site, intravasate, disseminate in the circulation, extravasate, adapt to the foreign microenvironment, and form organ-specific colonization. Each of these processes has been already studied extensively for molecular mechanisms focused mainly on protein-coding genes. Recently, increasing evidence is pointing towards RNAs without coding potential for proteins, referred to as non-coding RNAs, as regulators in shaping cellular activity. Since those first reports, the detection and characterization of non-coding RNA have explosively thrived and greatly enriched the understanding of the molecular regulatory networks in metastasis. Moreover, a comprehensive description of ncRNA dysregulation will provide new insights into novel tools for the early detection and treatment of metastatic cancer. In this review, we focus on discussion of the emerging role of ncRNAs in governing cancer metastasis and describe step by step how ncRNAs impinge on cancer metastasis. In particular, we highlight the diagnostic and therapeutic applications of ncRNAs in metastatic cancer.
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Affiliation(s)
- Qiu-Luo Liu
- Department of Gastrointestinal Surgery, State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Zhe Zhang
- Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, 610041, Sichuan, People's Republic of China
| | - Xiawei Wei
- Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, 610041, Sichuan, People's Republic of China.
| | - Zong-Guang Zhou
- Department of Gastrointestinal Surgery, State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, People's Republic of China.
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71
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Chen J, Gu J, Tang M, Liao Z, Tang R, Zhou L, Su M, Jiang J, Hu Y, Chen Y, Zhou Y, Liao Q, Xiong W, Zhou J, Tang Y, Nie S. Regulation of cancer progression by circRNA and functional proteins. J Cell Physiol 2021; 237:373-388. [PMID: 34676546 DOI: 10.1002/jcp.30608] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 08/21/2021] [Accepted: 08/24/2021] [Indexed: 12/13/2022]
Abstract
Circular RNAs (circRNAs) are closed back-splicing products of precursor mRNA in eukaryotes. Compared with linear mRNAs, circRNAs have a special structure and stable expression. A large number of studies have provided different regulatory mechanisms of circRNAs in tumors. Challenges exist in understanding the control of circRNAs because of their sequence overlap with linear mRNA. Here, we survey the most recent progress regarding the regulation of circRNA biogenesis by RNA-binding proteins, one of the vital functional proteins. Furthermore, substantial circRNAs exert compelling biological roles by acting as protein sponges, by being translated themselves or regulating posttranslational modifications of proteins. This review will help further explore more types of functional proteins that interact with circRNA in cancer and reveal other unknown mechanisms of circRNA regulation.
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Affiliation(s)
- Junhong Chen
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China.,The University of South China, Hengyang, China.,Department of Colorectal Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Jie Gu
- Department of Geriatric Urology, Xiangya International Medical Center, Xiangya Hospital, Central South University, Changsha, China.,Martini-Klinik Prostate Cancer Center, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Mengtian Tang
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China.,The University of South China, Hengyang, China.,Department of Colorectal Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Zhiqiang Liao
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China.,The University of South China, Hengyang, China.,Department of Colorectal Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Rui Tang
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China.,The University of South China, Hengyang, China.,Department of Colorectal Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Lianqing Zhou
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Min Su
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China.,Central Laboratory, The Affiliated Cancer Hospital of Xiangya Medical School, Central South University, Changsha, China
| | - Jiarui Jiang
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China.,Department of Colorectal Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Yingbin Hu
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China.,Department of Colorectal Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Yongyi Chen
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Yujuan Zhou
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Qianjin Liao
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China.,Central Laboratory, The Affiliated Cancer Hospital of Xiangya Medical School, Central South University, Changsha, China
| | - Wei Xiong
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China.,The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
| | - Jumei Zhou
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China.,Department of Radiotherapy, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Yanyan Tang
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China.,Department of Colorectal Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China.,Central Laboratory, The Affiliated Cancer Hospital of Xiangya Medical School, Central South University, Changsha, China
| | - Shaolin Nie
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China.,Department of Colorectal Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
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Lai MC, Chen YP, Li DA, Yu JS, Hung HY, Tarn WY. DDX3 interacts with USP9X and participates in deubiquitination of the anti-apoptotic protein MCL1. FEBS J 2021; 289:1043-1061. [PMID: 34606682 DOI: 10.1111/febs.16219] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 08/26/2021] [Accepted: 10/01/2021] [Indexed: 01/19/2023]
Abstract
Here, we describe a novel interaction between the RNA helicase DDX3 and the deubiquitinase ubiquitin-specific peptidase 9 X-linked (USP9X) in human cells. Domain mapping studies reveal that the C-terminal region of DDX3 interacted with the N terminus of USP9X. USP9X was predominantly localized in the cytoplasm where the interaction between DDX3 and USP9X occurred. USP9X was not visibly enriched in cytoplasmic stress granules (SGs) under oxidative stress conditions, whereas overexpression of GFP-DDX3 induced SG formation and recruited USP9X to SGs in HeLa cells. Luciferase reporter assays showed that depletion of USP9X had no significant effect on DDX3-mediated translation. Given that DDX3 is not ubiquitinated upon ubiquitin overexpression, it is unlikely that DDX3 serves as a substrate of USP9X. Importantly, we found that ubiquitinated MCL1 was accumulated upon depletion of USP9X and/or DDX3 in MG132-treated cells, suggesting that USP9X and DDX3 play a role in regulating MCL1 protein stability and anti-apoptotic function. This study indicates that DDX3 exerts anti-apoptotic effects probably by coordinating with USP9X in promoting MCL1 deubiquitination.
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Affiliation(s)
- Ming-Chih Lai
- Department of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan.,Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan.,Department of Colorectal Surgery, New Taipei Municipal Tucheng Hospital, Taiwan
| | - Yi-Pin Chen
- Department of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Ding-An Li
- Department of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Jau-Song Yu
- Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan.,Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Hsin-Yuan Hung
- Department of Colorectal Surgery, New Taipei Municipal Tucheng Hospital, Taiwan
| | - Woan-Yuh Tarn
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
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A CRISPR knockout screen reveals new regulators of canonical Wnt signaling. Oncogenesis 2021; 10:63. [PMID: 34552058 PMCID: PMC8458386 DOI: 10.1038/s41389-021-00354-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 08/18/2021] [Accepted: 09/01/2021] [Indexed: 12/18/2022] Open
Abstract
The Wnt signaling pathways play fundamental roles during both development and adult homeostasis. Aberrant activation of the canonical Wnt signal transduction pathway is involved in many diseases including cancer, and is especially implicated in the development and progression of colorectal cancer. Although extensively studied, new genes, mechanisms and regulatory modulators involved in Wnt signaling activation or silencing are still being discovered. Here we applied a genome-scale CRISPR-Cas9 knockout (KO) screen based on Wnt signaling induced cell survival to reveal new inhibitors of the oncogenic, canonical Wnt pathway. We have identified several potential Wnt signaling inhibitors and have characterized the effects of the initiation factor DExH-box protein 29 (DHX29) on the Wnt cascade. We show that KO of DHX29 activates the Wnt pathway leading to upregulation of the Wnt target gene cyclin-D1, while overexpression of DHX29 inhibits the pathway. Together, our data indicate that DHX29 may function as a new canonical Wnt signaling tumor suppressor and demonstrates that this screening approach can be used as a strategy for rapid identification of novel Wnt signaling modulators.
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Peng C, Tan Y, Yang P, Jin K, Zhang C, Peng W, Wang L, Zhou J, Chen R, Wang T, Jin C, Ji J, Feng Y, Tang J, Sun Y. Circ-GALNT16 restrains colorectal cancer progression by enhancing the SUMOylation of hnRNPK. J Exp Clin Cancer Res 2021; 40:272. [PMID: 34452628 PMCID: PMC8400830 DOI: 10.1186/s13046-021-02074-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 08/14/2021] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Recent studies have investigated the role of circular RNAs (circRNAs) as significant regulatory factors in multiple cancer progression. Nevertheless, the biological functions of circRNAs and the underlying mechanisms by which they regulate colorectal cancer (CRC) progression remain unclear. METHODS A novel circRNA (circ-GALNT16) was identified by microarray and qRT-PCR. A series of in vitro and in vivo phenotype experiments were performed to investigate the role of circ-GALNT16 in CRC. The FISH, RNA pulldown assay, RIP assay, RNA sequencing, coimmunoprecipitation, and ChIP were performed to investigate the molecular mechanisms of circ-GALNT16 in CRC progression. RESULTS Circ-GALNT16 was downregulated in CRC and was negatively correlated with poor prognosis. Circ-GALNT16 suppressed the proliferation and metastatic ability of CRC cells in vitro and in vivo. Mechanistically, circ-GALNT16 could bind to the KH3 domain of heterogeneous nuclear ribonucleoprotein K (hnRNPK), which promoted the SUMOylation of hnRNPK. Additionally, circ-GALNT16 could enhance the formation of the hnRNPK-p53 complex by facilitating the SUMOylation of hnRNPK. RNA sequencing assay identified serpin family E member 1 as the target gene of circ-GALNT16 at the transcriptional level. Rescue assays revealed that circ-GALNT16 regulated the expression of Serpine1 by inhibiting the deSUMOylation of hnRNPK mediated by SUMO-specific peptidase 2 and then regulating the sequence-specific DNA binding ability of the hnRNPK-p53 transcriptional complex. CONCLUSIONS Circ-GALNT16 suppressed CRC progression by inhibiting Serpine1 expression through regulating the sequence-specific DNA binding ability of the SENP2-mediated hnRNPK-p53 transcriptional complex and might function as a biomarker and therapeutic target for CRC.
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Affiliation(s)
- Chaofan Peng
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Jiangsu, 210029, Nanjing, People's Republic of China
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China
- Nanjing Medical University, Nanjing, China
| | - Yuqian Tan
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Jiangsu, 210029, Nanjing, People's Republic of China
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China
- Nanjing Medical University, Nanjing, China
| | - Peng Yang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Jiangsu, 210029, Nanjing, People's Republic of China
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China
- Nanjing Medical University, Nanjing, China
| | - Kangpeng Jin
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Jiangsu, 210029, Nanjing, People's Republic of China
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China
- Nanjing Medical University, Nanjing, China
| | - Chuan Zhang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Jiangsu, 210029, Nanjing, People's Republic of China
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China
- Nanjing Medical University, Nanjing, China
| | - Wen Peng
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Jiangsu, 210029, Nanjing, People's Republic of China
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China
- Nanjing Medical University, Nanjing, China
| | - Lu Wang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Jiangsu, 210029, Nanjing, People's Republic of China
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China
- Nanjing Medical University, Nanjing, China
| | - Jiahui Zhou
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Jiangsu, 210029, Nanjing, People's Republic of China
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China
- Nanjing Medical University, Nanjing, China
| | - Ranran Chen
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Jiangsu, 210029, Nanjing, People's Republic of China
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China
- Nanjing Medical University, Nanjing, China
| | - Tuo Wang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Jiangsu, 210029, Nanjing, People's Republic of China
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China
- Nanjing Medical University, Nanjing, China
| | - Chi Jin
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Jiangsu, 210029, Nanjing, People's Republic of China
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China
- Nanjing Medical University, Nanjing, China
| | - Jiangzhou Ji
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Jiangsu, 210029, Nanjing, People's Republic of China
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China
- Nanjing Medical University, Nanjing, China
| | - Yifei Feng
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Jiangsu, 210029, Nanjing, People's Republic of China
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China
- Nanjing Medical University, Nanjing, China
| | - Junwei Tang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Jiangsu, 210029, Nanjing, People's Republic of China.
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China.
- Nanjing Medical University, Nanjing, China.
| | - Yueming Sun
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Jiangsu, 210029, Nanjing, People's Republic of China.
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China.
- Nanjing Medical University, Nanjing, China.
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Xin W, Yuan S, Wang B, Qian Q, Chen Y. Hsa_circ_0066523 promotes the proliferation and osteogenic differentiation of bone mesenchymal stem cells by repressing PTEN. Bone Joint Res 2021; 10:526-535. [PMID: 34402627 PMCID: PMC8414438 DOI: 10.1302/2046-3758.108.bjr-2020-0127.r2] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Aims Circular RNAs (circRNAs) are a novel type of non-coding RNA that plays major roles in the development of diverse diseases including osteonecrosis of the femoral head (ONFH). Here, we explored the impact of hsa_circ_0066523 derived from forkhead box P1 (FOXP1) (also called circFOXP1) on bone mesenchymal stem cells (BMSCs), which is important for ONFH development. Methods RNA or protein expression in BMSCs was analyzed by quantitative real-time polymerase chain reaction (qRT-PCR) or western blot, respectively. Cell Counting Kit 8 (CCK8) and 5-ethynyl-2’-deoxyuridine (EdU) were used to analyze cell proliferation. Alkaline phosphatase (ALP) activity, ALP staining, and Alizarin Red S staining were employed to evaluate the osteoblastic differentiation. Chromatin immunoprecipitation (ChIP), luciferase reporter, RNA pull down, and RNA immunoprecipitation (RIP) assays were combined for exploring molecular associations. Results Circ_0066523 was upregulated in osteogenic induction process of BMSCs. Silencing circ_0066523 restrained the proliferation and osteogenic differentiation of BMSCs. Mechanistically, circ_0066523 activated phosphatidylinositol-4,5-bisphosphate 3-kinase / AKT serine/threonine kinase 1 (PI3K/AKT) pathway via recruiting lysine demethylase 5B (KDM5B) to epigenetically repress the transcription of phosphatase and tensin homolog (PTEN). Functionally, AKT signalling pathway agonist or PTEN knockdown counteracted the effects of silenced circ_0066523 on BMSC proliferation and differentiation. Conclusion Circ_0066523 promotes the proliferation and differentiation of BMSCs by epigenetically repressing PTEN and therefore activating AKT pathway. This finding might open new avenues for the identification of therapeutic targets for osteoblast differentiation related diseases such as ONFH. Cite this article: Bone Joint Res 2021;10(8):526–535.
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Affiliation(s)
- Wei Xin
- Department of Orthopedics, Changzheng Hospital, Shanghai, China
| | - Shuai Yuan
- Department of Orthopedics, Changzheng Hospital, Shanghai, China
| | - Bo Wang
- Department of Orthopedics, Changzheng Hospital, Shanghai, China
| | - Qirong Qian
- Department of Orthopedics, Changzheng Hospital, Shanghai, China
| | - Yi Chen
- Department of Orthopedics, Changzheng Hospital, Shanghai, China
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A Novel Intronic Circular RNA Antagonizes Influenza Virus by Absorbing a microRNA That Degrades CREBBP and Accelerating IFN-β Production. mBio 2021; 12:e0101721. [PMID: 34281396 PMCID: PMC8406138 DOI: 10.1128/mbio.01017-21] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Virus-host interactions are complicated processes, and multiple cellular proteins promote or inhibit viral replication through different mechanisms. Recent progress has implicated circular RNAs (circRNAs) in cancer biology and progression; however, the role of circRNAs in viral infection remains largely unclear. Here, we detected 11,620 circRNAs in A549 cells and found that 411 of them were differentially expressed in influenza virus-infected A549 cells. We characterized a novel intronic circRNA, AIVR, that was upregulated in influenza virus-infected A549 cells and found that silencing of AIVR significantly promoted influenza virus replication in A549 cells. We further found that AIVR predominantly localizes in the cytoplasm and works as a microRNA (miRNA) sponge. One of the miRNAs absorbed by AIVR binds the mRNA of CREBBP, which is an important component of the large nucleoprotein complex interferon beta (IFN-β) enhanceosome that accelerates IFN-β production. AIVR overexpression significantly increased the mRNA and protein levels of IFN-β in the influenza virus-infected A549 cells. Therefore, the upregulation of AIVR is a cellular antiviral strategy, with AIVR exerting its antiviral effect by absorbing miRNA and promoting the expression of CREBBP to facilitate IFN-β production. Our study provides new insights into the roles of circRNAs in the cellular innate antiviral response.
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Radanova M, Mihaylova G, Nazifova-Tasinova N, Levkova M, Tasinov O, Ivanova D, Mihaylova Z, Donev I. Oncogenic Functions and Clinical Significance of Circular RNAs in Colorectal Cancer. Cancers (Basel) 2021; 13:3395. [PMID: 34298612 PMCID: PMC8303601 DOI: 10.3390/cancers13143395] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/13/2021] [Accepted: 07/02/2021] [Indexed: 12/11/2022] Open
Abstract
Colorectal cancer (CRC) is ranked as the second most commonly diagnosed disease in females and the third in males worldwide. Therefore, the finding of new more reliable biomarkers for early diagnosis, for prediction of metastasis, and resistance to conventional therapies is an important challenge in overcoming the disease. The current review presents circular RNAs (circRNAs) with their unique features as potential prognostic and diagnostic biomarkers in CRC. The review highlights the mechanism of action and the role of circRNAs with oncogenic functions in the CRC as well as the association between their expression and clinicopathological characteristics of CRC patients. The comprehension of the role of oncogenic circRNAs in CRC pathogenesis is growing rapidly and the next step is using them as suitable new drug targets in the personalized treatment of CRC patients.
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Affiliation(s)
- Maria Radanova
- Department of Biochemistry, Molecular Medicine and Nutrigenomics, Medical University of Varna, 9000 Varna, Bulgaria; (M.R.); (G.M.); (N.N.-T.); (O.T.); (D.I.)
- Laboratory of Molecular Pathology, University Hospital “St. Marina”, 9000 Varna, Bulgaria
| | - Galya Mihaylova
- Department of Biochemistry, Molecular Medicine and Nutrigenomics, Medical University of Varna, 9000 Varna, Bulgaria; (M.R.); (G.M.); (N.N.-T.); (O.T.); (D.I.)
| | - Neshe Nazifova-Tasinova
- Department of Biochemistry, Molecular Medicine and Nutrigenomics, Medical University of Varna, 9000 Varna, Bulgaria; (M.R.); (G.M.); (N.N.-T.); (O.T.); (D.I.)
| | - Mariya Levkova
- Department of Medical Genetics, Molecular Medicine and Nutrigenomics, Medical University of Varna, 9000 Varna, Bulgaria;
| | - Oskan Tasinov
- Department of Biochemistry, Molecular Medicine and Nutrigenomics, Medical University of Varna, 9000 Varna, Bulgaria; (M.R.); (G.M.); (N.N.-T.); (O.T.); (D.I.)
| | - Desislava Ivanova
- Department of Biochemistry, Molecular Medicine and Nutrigenomics, Medical University of Varna, 9000 Varna, Bulgaria; (M.R.); (G.M.); (N.N.-T.); (O.T.); (D.I.)
| | - Zhasmina Mihaylova
- Clinic of Medical Oncology, Military Medical Academy, 1000 Sofia, Bulgaria;
| | - Ivan Donev
- Clinic of Medical Oncology, Hospital Nadezhda, 1000 Sofia, Bulgaria
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Wang K, Yu G, Lin J, Wang Z, Lu Q, Gu C, Yang T, Liu S, Yang H. Berberine Sensitizes Human Hepatoma Cells to Regorafenib via Modulating Expression of Circular RNAs. Front Pharmacol 2021; 12:632201. [PMID: 34220494 PMCID: PMC8248669 DOI: 10.3389/fphar.2021.632201] [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: 11/22/2020] [Accepted: 03/08/2021] [Indexed: 01/10/2023] Open
Abstract
Regorafenib resistance is a key limiting factor in the treatment of advanced hepatocellular carcinoma (HCC). Increasing evidence has demonstrated that Berberine (BBR) can synergistically enhance the therapeutic effect of various chemotherapeutic agents. However, the contribution of BBR on regorafenib therapy remains unclear. The purpose of this study was to explore the combined treatment effect of berberine and regorafenib in HCC. We found that BBR enhanced the cytotoxicity of regorafenib in HCC cells. Compared with regorafenib alone, the combined treatment of BBR and regorafenib significantly inhibited the proliferation of HCC cells and induced cellular apoptosis. Meanwhile, the combined treatment group with BBR (10mg/kg/day) and regorafenib (5mg/kg/day) had a dramatic inhibitory effect on the growth of HCC xenograft tumors in nude mice. The increased apoptosis of xenograft tumors was seen in the combined treatment group. Moreover, a comprehensive circular RNA sequencing was performed to identify differentially expressed circRNAs in HCC cells after exposure to 100µM BBR and 5µM regorafenib. The volcano plot and scatter plot analyses revealed that there were 58 up-regulated and 19 down-regulated differentially expressed circRNAs between the combination treatment and control groups. Among them, the expression of hsa_circ_0032029 and hsa_circ_0008928 were up-regulated in HCC cells after treatment with 100µM BBR and 5µM regorafenib. Taken together, this study demonstrated that BBR enhanced the anti-HCC effect of regorafenib both in vitro and in vivo. The synergistic anti-tumor effect of BBR and regorafenib might be related to the up-regulation of hsa_circ_0032029 and hsa_circ_0008928 in HCC cells.
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Affiliation(s)
- Kunyuan Wang
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Ganxiang Yu
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jiaen Lin
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zhilei Wang
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Qianting Lu
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Chengxin Gu
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Tao Yang
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Shiming Liu
- Guangzhou Institute of Cardiovascular Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Hui Yang
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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Wang X, Xing L, Yang R, Chen H, Wang M, Jiang R, Zhang L, Chen J. The circACTN4 interacts with FUBP1 to promote tumorigenesis and progression of breast cancer by regulating the expression of proto-oncogene MYC. Mol Cancer 2021; 20:91. [PMID: 34116677 PMCID: PMC8194204 DOI: 10.1186/s12943-021-01383-x] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 05/31/2021] [Indexed: 01/17/2023] Open
Abstract
Background Recent studies have revealed that circular RNAs (circRNAs) play significant roles in the occurrence and development of many kinds of cancers including breast cancer (BC). However, the potential functions of most circRNAs and the molecular mechanisms underlying progression of BC remain elusive. Method Here, Circular RNA microarray was executed in 4 pairs of breast cancer tissues and para-cancer tissues. The expression and prognostic significance of circACTN4 in BC cells and tissues were determined by qRT-PCR and in situ hybridization. Gain-and loss-of-function experiments were implemented to observe the impacts of circACTN4 on the growth, invasion, and metastasis of BC cells in vitro and in vivo. Mechanistically, chromatin immunoprecipitation, luciferase reporter, RNA pulldown, mass spectrum, RNA immunoprecipitation, fluorescence in situ hybridization and co-immunoprecipitation assays were executed. Results CircACTN4 was significantly upregulated in breast cancer tissues and cells, its expression was correlated with clinical stage and poor prognosis of patients with BC. Ectopic expression of circACTN4 strikingly facilitated the growth, invasion, and metastasis of breast cancer cells in vitro and in vivo. Whereas knockdown of circACTN4 revealed opposite roles. CircACTN4 was mainly distributed in the nucleus. Further mechanistic research proved that circACTN4 could competitively bind to far upstream element binding protein 1 (FUBP1) to prevent the combination between FUBP1 and FIR, thereby activating MYC transcription and facilitating tumor progression of breast cancer. Furthermore, we found that upstream transcription factor 2 (USF2) might promote the biogenesis of circACTN4. Conclusion Our findings uncover a pivotal mechanism that circACTN4 mediated by USF2 might interact with FUBP1 to promote the occurrence and development of breast cancer via enhancing the expression of MYC. CircACTN4 could be a novel potential target for diagnosis and treatment of breast cancer. Supplementary Information The online version contains supplementary material available at 10.1186/s12943-021-01383-x.
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Affiliation(s)
- Xiaosong Wang
- Department of Cell Biology and Genetics, Chongqing Medical University, #1 Yixueyuan Road, Chongqing, 400016, China
| | - Lei Xing
- Department of Endocrine and breast surgery, The First Affiliated Hospital of Chongqing Medical University, #1 Yixueyuan Road, Chongqing, 400016, China
| | - Rui Yang
- Department of Cell Biology and Genetics, Chongqing Medical University, #1 Yixueyuan Road, Chongqing, 400016, China
| | - Hang Chen
- Department of Cell Biology and Genetics, Chongqing Medical University, #1 Yixueyuan Road, Chongqing, 400016, China
| | - Min Wang
- Department of Cell Biology and Genetics, Chongqing Medical University, #1 Yixueyuan Road, Chongqing, 400016, China
| | - Rong Jiang
- Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, #1 Yixueyuan Road, Chongqing, 400016, China
| | - Luyu Zhang
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, #1 Yixueyuan Road, Chongqing, 400016, China
| | - Junxia Chen
- Department of Cell Biology and Genetics, Chongqing Medical University, #1 Yixueyuan Road, Chongqing, 400016, China.
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Bi F, An Y, Sun T, You Y, Yang Q. PHGDH Is Upregulated at Translational Level and Implicated in Platin-Resistant in Ovarian Cancer Cells. Front Oncol 2021; 11:643129. [PMID: 34178629 PMCID: PMC8222667 DOI: 10.3389/fonc.2021.643129] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 05/12/2021] [Indexed: 01/03/2023] Open
Abstract
Background Platinum-based chemotherapy is the first line option for ovarian cancer. The development of resistance to such chemotherapy results in treatment failure, while the underlying mechanisms are poorly understood. Methods Clinical samples were collected from Shengjing Hospital of China Medical University. MTT assay was used to see the proliferation and chemoresistance of ovarian cancer cells. Transwell migration and Matrigel invasion assays was used to see the invasion ability of ovarian cancer cells. In addition, polysome profiling and tissue microarray and immunohistochemical staining were also used. The statistical significance of the difference was analyzed by ANOVA and post hoc Dunnett's test. Results PHGDH is the first enzyme responsible for serine biosynthesis pathway. The current study demonstrated that PHGDH is upregulated in platin-resistant ovarian cancer cells and tissues at the protein level. Importantly, knockdown of PHGDH suppressed, while overexpression of PHGDH increased the survival upon cisplatin exposure, invasiveness and spheroid formation of ovarian cancer cells. The current study demonstrated that PHGDH translation was upregulated in platin-resistant ovarian cancer. In addition, our study provided evidence that LncRNA RMRP (RNA Component of Mitochondrial RNA Processing Endoribonuclease) was upregulated in platin-resistant ovarian cancer, which promoted enrichment of RNA binding protein DDX3X (DEAD-Box Helicase 3 X-Linked) on the PHGDH mRNA to promote its translation. Conclusion Collectively, the current study described that PHGDH was upregulated and conferred resistance of ovarian cancer cells to cisplatin, suggesting that cisplatin resistance could be overcome by targeting PHGDH. Our study also provided evidence that differential PHGDH protein expression was defined by its translation, and RNA binding protein DDX3X and LncRNA RMRP are regulators of its translation.
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Affiliation(s)
- Fangfang Bi
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yuanyuan An
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Tianshui Sun
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yue You
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Qing Yang
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
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Wang Q, Pan S, Jiang Q, Li L, Tu W, Zhang Q, Zhou X. CircSPAG16 suppresses cadmium-induced transformation of human bronchial epithelial cells by decoying PIP5K1α to inactivate Akt. Mol Carcinog 2021; 60:582-594. [PMID: 34081812 DOI: 10.1002/mc.23325] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 05/12/2021] [Accepted: 05/24/2021] [Indexed: 02/03/2023]
Abstract
Circular RNAs (circRNAs) have been implicated to have important regulatory functions in chemical carcinogenesis via sponging microRNAs to regulate gene expression. Our study revealed a novel mechanism of circRNA in cadmium carcinogenesis through directly binding with protein. Here, we used cadmium-transformed human bronchial epithelial BEAS-2B cells to study the involvement and mechanism of circRNA in lung carcinogenesis caused by cadmium. By high-throughput sequencing, circSPAG16 was identified to be the most significantly downregulated circRNA in cadmium-transformed cells. CircSPAG16 was downregulated at Week 8, 12, 16, and 20 during cadmium-induced cell transformation. In addition, circSPAG16 overexpression prevented cadmium-induced transformation of BEAS-2B cells. Mechanistically, circSPAG16 inhibited the function of phosphatidylinositol 4-phosphate 5-kinase type-1 α (PIP5K1α) by binding with it. We demonstrated that PIP5K1α acted as an oncogene to activate Akt and promoted cancer hallmarks including proliferation, migration, invasion, and anchorage-independent growth in cadmium-transformed cells. CircSPAG16 overexpression inactivates PIP5K1α/Akt signaling in the transformed cells. Furthermore, PIP5K1α overexpression significantly rescued the inhibitory effects of circSPAG16 overexpression on pAkt and cancer hallmarks in cadmium-transformed cells. Collectively, our results revealed that circSPAG16 could prevent cadmium-induced transformation through binding with PIP5K1α to inactivate Akt. These results provide a novel regulatory mechanism of circRNA into carcinogenesis induced by cadmium.
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Affiliation(s)
- Qin Wang
- Key Laboratory of Environment and Health, Ministry of Education, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Shuya Pan
- Key Laboratory of Environment and Health, Ministry of Education, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Qi Jiang
- Key Laboratory of Environment and Health, Ministry of Education, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Luyao Li
- Key Laboratory of Environment and Health, Ministry of Education, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Wei Tu
- Key Laboratory of Environment and Health, Ministry of Education, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Qian Zhang
- Key Laboratory of Environment and Health, Ministry of Education, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xue Zhou
- Key Laboratory of Environment and Health, Ministry of Education, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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Papatsirou M, Artemaki PI, Karousi P, Scorilas A, Kontos CK. Circular RNAs: Emerging Regulators of the Major Signaling Pathways Involved in Cancer Progression. Cancers (Basel) 2021; 13:cancers13112744. [PMID: 34205978 PMCID: PMC8198587 DOI: 10.3390/cancers13112744] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/28/2021] [Accepted: 05/29/2021] [Indexed: 12/11/2022] Open
Abstract
Signal transduction is an essential process that regulates and coordinates fundamental cellular processes, such as development, immunity, energy metabolism, and apoptosis. Through signaling, cells are capable of perceiving their environment and adjusting to changes, and most signaling cascades ultimately lead to alterations in gene expression. Circular RNAs (circRNAs) constitute an emerging type of endogenous transcripts with regulatory roles and unique properties. They are stable and expressed in a tissue-, cell-, and developmental stage-specific manner, while they are involved in the pathogenesis of several diseases, including cancer. Aberrantly expressed circRNAs can mediate cancer progression through regulation of the activity of major signaling cascades, such as the VEGF, WNT/β-catenin, MAPK, PI3K/AKT, and Notch signaling pathways, as well as by interfering with signaling crosstalk. Deregulated signaling can then function to induce angiogenesis, promote invasion, migration, and metastasis, and, generally, modulate the hallmarks of cancer. In this review article, we summarize the most recently described and intriguing cases of circRNA-mediated signaling regulation that are involved in cancer progression, and discuss the biomarker potential of circRNAs, as well as future therapeutic applications.
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Farooqi AA, Naureen H, Attar R. Regulation of cell signaling pathways by circular RNAs and microRNAs in different cancers: Spotlight on Wnt/β-catenin, JAK/STAT, TGF/SMAD, SHH/GLI, NOTCH and Hippo pathways. Semin Cell Dev Biol 2021; 124:72-81. [PMID: 33863643 DOI: 10.1016/j.semcdb.2021.04.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 04/01/2021] [Accepted: 04/02/2021] [Indexed: 02/07/2023]
Abstract
Groundbreaking discoveries in molecular oncology have leveraged our understanding altogether to a new level. Mapping of plethora of cell signaling pathways has enabled researchers to drill down deep into the intermeshed regulatory networks which crosstalk to promote carcinogenesis and metastasis. More importantly, discovery of non-coding RNAs has added new layers of complexity to already complicated nature of cell signaling pathways. The discovery of circular RNAs (circRNAs) has opened the door to an ever-widening understanding of cellular processes that are controlled or influenced by circRNAs. In this review, we have summarized most recent advancements in our understanding related to interplay between circular RNAs and microRNAs for the regulation of NOTCH, Wnt/β-catenin, Hippo, SHH/GLI, JAK/STAT and TGF/SMAD pathways in different cancers.
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Affiliation(s)
- Ammad Ahmad Farooqi
- Department of Molecular Oncology, Institute of Biomedical and Genetic Engineering (IBGE), Islamabad, Pakistan.
| | - Humaira Naureen
- Faculty of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan
| | - Rukset Attar
- Department of Obstetrics and Gynecology, Yeditepe University, Turkey
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Tao X, Shao Y, Yan J, Yang L, Ye Q, Wang Q, Lu R, Guo J. Biological roles and potential clinical values of circular RNAs in gastrointestinal malignancies. Cancer Biol Med 2021; 18:j.issn.2095-3941.2020.0348. [PMID: 33710802 PMCID: PMC8185857 DOI: 10.20892/j.issn.2095-3941.2020.0348] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 11/19/2020] [Indexed: 01/17/2023] Open
Abstract
Circular RNAs (circRNAs), a class of endogenous RNA molecules, are produced by alternative splicing of precursor RNA and are covalently linked at the 5' and 3' ends. Recent studies have revealed that dysregulated circRNAs are closely related to the occurrence and progression of gastrointestinal malignancies. Accumulating evidence indicates that circRNAs, including circPVT1, circLARP4, circ-SFMBT2, cir-ITCH, circRNA_100782, circ_100395, circ-DONSON, hsa_circ_0001368, circNRIP1, circFAT1(e2), circCCDC66, circSMARCA5, circ-ZNF652, and circ_0030235 play important roles in the proliferation, differentiation, invasion, and metastasis of cancer cells through a variety of mechanisms, such as acting as microRNA sponges, interacting with RNA-binding proteins, regulating gene transcription and alternative splicing, and being translated into proteins. With the characteristics of high abundance, high stability, extensive functions, and certain tissue-, time- and disease-specific expressions, circRNAs are expected to provide novel perspectives for the diagnoses and treatments of gastrointestinal malignancies.
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Affiliation(s)
- Xueping Tao
- Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo 315211, China
- Department of Gastroenterology, the Affiliated Hospital of Medical School of Ningbo University, Ningbo 315020, China
| | - Yongfu Shao
- Department of Gastroenterology, the Affiliated Hospital of Medical School of Ningbo University, Ningbo 315020, China
| | - Jianing Yan
- Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo 315211, China
- Department of Gastroenterology, the Affiliated Hospital of Medical School of Ningbo University, Ningbo 315020, China
| | - Liyang Yang
- Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo 315211, China
- Department of Gastroenterology, the Affiliated Hospital of Medical School of Ningbo University, Ningbo 315020, China
| | - Qihua Ye
- Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo 315211, China
- Department of Gastroenterology, the Affiliated Hospital of Medical School of Ningbo University, Ningbo 315020, China
| | - Qingling Wang
- Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo 315211, China
- Department of Gastroenterology, the Affiliated Hospital of Medical School of Ningbo University, Ningbo 315020, China
| | - Rongdan Lu
- Department of Gastroenterology, the Affiliated Hospital of Medical School of Ningbo University, Ningbo 315020, China
| | - Junming Guo
- Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo 315211, China
- Department of Gastroenterology, the Affiliated Hospital of Medical School of Ningbo University, Ningbo 315020, China
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Gao YJ, Zhang RJ, Liu Q, Sun SG, Qi MY, Wang Y, Geng DD, Wang L. Functional predication of differentially expressed circRNAs/lncRNAs in the prefrontal cortex of Nrf2-knockout mice. Aging (Albany NY) 2021; 13:8797-8816. [PMID: 33714958 PMCID: PMC8034947 DOI: 10.18632/aging.202688] [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: 09/21/2020] [Accepted: 02/01/2021] [Indexed: 12/25/2022]
Abstract
In the central nervous system, nuclear factor erythroid-2-related factor 2 (Nrf2) protects neurons from oxidant injury, thereby ameliorating neurodegeneration. We explored the key circular RNAs (circRNAs) and long non-coding RNAs (lncRNAs) involved in Nrf2-induced neuroprotection. We used microarrays to examine the circRNAs (DEcircRNAs), lncRNAs (DElncRNAs) and mRNAs (DEmRNAs) differentially expressed between Nrf2 (+/+) and Nrf2 (-/-) mice and identified DEcircRNA/DElncRNA-miRNA-DEmRNA interaction networks. In total, 197 DEcircRNAs, 685 DElncRNAs and 356 DEmRNAs were identified in prefrontal cortical tissues from Nrf2 (-/-) mice. The expression patterns of selected DEcircRNAs (except for mmu_circ_0003404) and DElncRNAs in qRT-PCR analyses were generally consistent with the microarray analysis results. Functional annotation of the DEmRNAs in the DEcircRNA/DElncRNA-miRNA-DEmRNA networks indicated that five non-coding RNAs (mmu_circ_0000233, ENSMUST00000204847, NONMMUT024778, NONMMUT132160 and NONMMUT132168) may contribute to Nrf2 activity, with the help of mmu_circ_0015035 and NONMMUT127961. The results also revealed that four non-coding RNAs (cicRNA.20127, mmu_circ_0012936, ENSMUST00000194077 and NONMMUT109267) may influence glutathione metabolism. Additionally, 44 DEcircRNAs and 7 DElncRNAs were found to possess coding potential. These findings provide clues to the molecular pathways through which Nrf2 protects neurons.
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Affiliation(s)
- Yan-Jing Gao
- Department of Human Anatomy, Institute of Medicine and Health, Hebei Medical University, Shijiazhuang 050017, Hebei, China
| | - Run-Jiao Zhang
- Department of Human Anatomy, Institute of Medicine and Health, Hebei Medical University, Shijiazhuang 050017, Hebei, China
| | - Qing Liu
- Department of Human Anatomy, Institute of Medicine and Health, Hebei Medical University, Shijiazhuang 050017, Hebei, China
| | - Shao-Guang Sun
- Department of Biochemistry and Molecular Biology, Hebei Medical University, Shijiazhuang 050017, Hebei, China
| | - Mao-Yang Qi
- School of Basic Medicine, Hebei Medical University, Shijiazhuang 050017, Hebei, China
| | - Yue Wang
- School of Basic Medicine, Hebei Medical University, Shijiazhuang 050017, Hebei, China
| | - Dan-Dan Geng
- Department of Human Anatomy, Institute of Medicine and Health, Hebei Medical University, Shijiazhuang 050017, Hebei, China
| | - Lei Wang
- Department of Human Anatomy, Institute of Medicine and Health, Hebei Medical University, Shijiazhuang 050017, Hebei, China
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Abstract
The DEAD-box helicase family member DDX3X (DBX, DDX3) functions in nearly all stages of RNA metabolism and participates in the progression of many diseases, including virus infection, inflammation, intellectual disabilities and cancer. Over two decades, many studies have gradually unveiled the role of DDX3X in tumorigenesis and tumour progression. In fact, DDX3X possesses numerous functions in cancer biology and is closely related to many well-known molecules. In this review, we describe the function of DDX3X in RNA metabolism, cellular stress response, innate immune response, metabolic stress response in pancreatic β cells and embryo development. Then, we focused on the role of DDX3X in cancer biology and systematically demonstrated its functions in various aspects of tumorigenesis and development. To provide a more intuitive understanding of the role of DDX3X in cancer, we summarized its functions and specific mechanisms in various types of cancer and presented its involvement in cancer-related signalling pathways.
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Xu H, Leng Q, Zheng J, Adu-Asiamah P, Lin S, Li T, Wang Z, An L, Zhao Z, Zhang L. Effects of Circular RNA of Chicken Growth Hormone Receptor Gene on Cell Proliferation. Front Genet 2021; 12:598575. [PMID: 33643379 PMCID: PMC7905176 DOI: 10.3389/fgene.2021.598575] [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: 08/25/2020] [Accepted: 01/11/2021] [Indexed: 11/25/2022] Open
Abstract
Animal growth and development are regulated by neural and endocrine growth axes, in which cell proliferation plays key roles. Recently, many research showed that circular RNAs were involved in hepatocyte and myoblast proliferation. Previously, we identified a circular RNA derived from the chicken GHR gene, named circGHR. However, the function of circGHR is unclear. The objective of this study was to investigate circGHR expression pattern and its roles in cell proliferation. Results indicated that circGHR was a closed-loop structure molecule, and it was richer in the nucleus of hepatocytes and myoblast. Real-time PCR showed that circGHR was increased from E13 to the 7th week in the liver but decreased in the thigh and breast muscle. The CCK-8 assay displayed that circGHR promoted cell proliferation. Simultaneously, the biomarker genes PCNA, CCND1, and CDK2 and the linear transcripts GHR and GHBP were upregulated when circGHR was overexpressed. Altogether, these data exhibited that circGHR could promote cell proliferation possibly by regulating GHR mRNA and GHBP expression.
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Affiliation(s)
- Haidong Xu
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
| | - Qiying Leng
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
| | - Jiahui Zheng
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
| | - Patricia Adu-Asiamah
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
| | - Shudai Lin
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, South China Agricultural University, Guangzhou, China
| | - Ting Li
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
| | - Zhang Wang
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
| | - Lilong An
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
| | - Zhuihui Zhao
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
| | - Li Zhang
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
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Wang X, Li H, Lu Y, Cheng L. Regulatory Effects of Circular RNAs on Host Genes in Human Cancer. Front Oncol 2021; 10:586163. [PMID: 33643900 PMCID: PMC7905086 DOI: 10.3389/fonc.2020.586163] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 12/30/2020] [Indexed: 11/20/2022] Open
Abstract
Circular RNAs (circRNAs) are a class of single-stranded, covalent closed-loop RNAs with tissue-/development-specific expression patterns. circRNAs are stable and play oncogenic or tumor suppressive roles in various aspects of cancer, including tumorigenesis, proliferation, apoptosis, metastasis, invasion, chemo-therapeutic resistance, and prognosis. circRNAs act as miRNA/protein sponges, protein scaffold, or template for translation. Increasing evidence shows circRNAs contribute to cancer progression via modulating the expression or function of their host genes. In this review, we summarize the latest progress in the regulation of host genes by circRNAs in human cancer. The works on circRNAs mediated regulation of host genes enhance us to understand the interaction between circRNAs and their host genes in human cancer.
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Affiliation(s)
- Xiong Wang
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Huijun Li
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Yanjun Lu
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Liming Cheng
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
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The RNA helicase Dhx15 mediates Wnt-induced antimicrobial protein expression in Paneth cells. Proc Natl Acad Sci U S A 2021; 118:2017432118. [PMID: 33483420 PMCID: PMC7848544 DOI: 10.1073/pnas.2017432118] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
RNA helicases play roles in various essential biological processes such as RNA splicing and editing. Recent in vitro studies show that RNA helicases are involved in immune responses toward viruses, serving as viral RNA sensors or immune signaling adaptors. However, there is still a lack of in vivo data to support the tissue- or cell-specific function of RNA helicases owing to the lethality of mice with complete knockout of RNA helicases; further, there is a lack of evidence about the antibacterial role of helicases. Here, we investigated the in vivo role of Dhx15 in intestinal antibacterial responses by generating mice that were intestinal epithelial cell (IEC)-specific deficient for Dhx15 (Dhx15 f/f Villin1-cre, Dhx15ΔIEC). These mice are susceptible to infection with enteric bacteria Citrobacter rodentium (C. rod), owing to impaired α-defensin production by Paneth cells. Moreover, mice with Paneth cell-specific depletion of Dhx15 (Dhx15 f/f Defensinα6-cre, Dhx15ΔPaneth) are more susceptible to DSS (dextran sodium sulfate)-induced colitis, which phenocopy Dhx15ΔIEC mice, due to the dysbiosis of the intestinal microbiota. In humans, reduced protein levels of Dhx15 are found in ulcerative colitis (UC) patients. Taken together, our findings identify a key regulator of Wnt-induced α-defensins in Paneth cells and offer insights into its role in the antimicrobial response as well as intestinal inflammation.
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Chen Z, Cui N, Zhao JS, Wu JF, Ma F, Li C, Liu XY. Expressions of ZNF436, β-catenin, EGFR, and CMTM5 in breast cancer and their clinical significances. Eur J Histochem 2021; 65. [PMID: 33478201 PMCID: PMC7856825 DOI: 10.4081/ejh.2021.3173] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 12/07/2020] [Indexed: 12/21/2022] Open
Abstract
As the leading malignancy among women, breast cancer is a serious threat to the life and health of women. In this context, it is of particular importance that a proper therapeutic target be identified for breast cancer treatment. We collected the pathological tissues of 80 patients, with the view to discovering appropriate molecular targets for the treatment of breast cancer, this paper analyzes the expressions of ZNF436, β-catenin, EGFR and CMTM5 in breast cancer tissues, as well as their correlations with breast cancer in combination with the clinicopathologic characteristics of studied patients. Immunohistochemistry (IHC) was utilized to detect the expression levels of ZNF436, β-catenin, EGFR and CMTM5 in cancerous and paracancerous tissues of breast cancer patients. The expression levels of ZNF436, β-Catenin and EGFR in breast cancer tissues were significantly greater than those in paracancerous tissues in this study (p<0.05), while CMTM5 was highly expressed in paracancerous tissues (p<0.05). Additionally, the correlation of the expressions of such indicators with the staging, differentiation and lymphatic metastasis of breast cancer, were also found to be statistically significant at the level p<0.05. The different expression levels of ZNF436, β-catenin, EGFR and CMTM5 in breast cancer and paracancerous tissues open up the possibility of utilizing them as molecular markers for breast cancer. These findings provide a theoretical basis for targeted molecular therapies for breast cancer, and hence carry a significant practical significance.
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Affiliation(s)
- Zhi Chen
- Department of Hepatobiliary Surgery, Affiliated Hospital of Hebei University, Baoding, Hebei.
| | - Na Cui
- Department of ICU, Affiliated Hospital of Hebei University, Baoding, Hebei.
| | - Ji-Sen Zhao
- Department of Anesthesiology, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei.
| | - Jian-Fei Wu
- Department of Anesthesiology, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei.
| | - Fang Ma
- Department of Anesthesiology, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei.
| | - Cong Li
- Department of Anesthesiology, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei.
| | - Xian-Yi Liu
- Department of Breast Surgery, Affiliated Hospital of Hebei University, Baoding, Hebei.
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91
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Wang X, Li H, Lu Y, Cheng L. Circular RNAs in Human Cancer. Front Oncol 2021; 10:577118. [PMID: 33537235 PMCID: PMC7848167 DOI: 10.3389/fonc.2020.577118] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Accepted: 12/02/2020] [Indexed: 01/17/2023] Open
Abstract
Circular RNAs (circRNAs) are a class of endogenous single-stranded covalently closed RNAs, primarily produced from pre-mRNAs via non-canonical back-splicing. circRNAs are highly conserved, stable, and expressed in tissue- and development-specific pattern. circRNAs play essential roles in physiological process as well as cancer biology. By the advances of deep sequencing and bioinformatics, the number of circRNAs have increased explosively. circRNAs function as miRNA/protein sponge, protein scaffold, protein recruitment, enhancer of protein function, as well as templates for translation involved in the regulation of transcription/splicing, translation, protein degradation, and pri-miRNA processing in human cancers and contributed to the pathogenesis of cancer. Numerous circRNAs may function in diverse manners. In this review, we survey the current understanding of circRNA functions in human cancer including miRNA sponge, circRNA-protein interaction, and circRNA-encoded protein, and summarize available databases for circRNA annotation and functional prediction.
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Affiliation(s)
| | | | - Yanjun Lu
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Liming Cheng
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
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92
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Zhou WY, Cai ZR, Liu J, Wang DS, Ju HQ, Xu RH. Circular RNA: metabolism, functions and interactions with proteins. Mol Cancer 2020; 19:172. [PMID: 33317550 PMCID: PMC7734744 DOI: 10.1186/s12943-020-01286-3] [Citation(s) in RCA: 596] [Impact Index Per Article: 149.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 11/20/2020] [Indexed: 01/17/2023] Open
Abstract
Circular RNAs (CircRNAs) are single-stranded, covalently closed RNA molecules that are ubiquitous across species ranging from viruses to mammals. Important advances have been made in the biogenesis, regulation, localization, degradation and modification of circRNAs. CircRNAs exert biological functions by acting as transcriptional regulators, microRNA (miR) sponges and protein templates. Moreover, emerging evidence has revealed that a group of circRNAs can serve as protein decoys, scaffolds and recruiters. However, the existing research on circRNA-protein interactions is quite limited. Hence, in this review, we briefly summarize recent progress in the metabolism and functions of circRNAs and elaborately discuss the patterns of circRNA-protein interactions, including altering interactions between proteins, tethering or sequestering proteins, recruiting proteins to chromatin, forming circRNA-protein-mRNA ternary complexes and translocating or redistributing proteins. Many discoveries have revealed that circRNAs have unique expression signatures and play crucial roles in a variety of diseases, enabling them to potentially act as diagnostic biomarkers and therapeutic targets. This review systematically evaluates the roles and mechanisms of circRNAs, with the hope of advancing translational medicine involving circRNAs.
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Affiliation(s)
- Wei-Yi Zhou
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, P. R. China
| | - Ze-Rong Cai
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, P. R. China
| | - Jia Liu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, P. R. China
| | - De-Shen Wang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, P. R. China
| | - Huai-Qiang Ju
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, P. R. China.
- Research Unit of Precision Diagnosis and Treatment for Gastrointestinal Cancer, Chinese Academy of Medical Sciences, Guangzhou, 510060, P. R. China.
| | - Rui-Hua Xu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, P. R. China.
- Research Unit of Precision Diagnosis and Treatment for Gastrointestinal Cancer, Chinese Academy of Medical Sciences, Guangzhou, 510060, P. R. China.
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Ma C, Gu R, Wang X, He S, Bai J, Zhang L, Zhang J, Li Q, Qu L, Xin W, Jiang Y, Li F, Zhao X, Zhu D. circRNA CDR1as Promotes Pulmonary Artery Smooth Muscle Cell Calcification by Upregulating CAMK2D and CNN3 via Sponging miR-7-5p. MOLECULAR THERAPY. NUCLEIC ACIDS 2020; 22:530-541. [PMID: 33230455 PMCID: PMC7566008 DOI: 10.1016/j.omtn.2020.09.018] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 09/17/2020] [Indexed: 12/30/2022]
Abstract
Emerging evidence has suggested that circular RNAs (circRNAs) are involved in multiple physiological processes and participate in a variety of human diseases. However, the underlying biological function of circRNAs in pulmonary hypertension (PH) is still ambiguous. Herein, we investigated the implication and regulatory effect of a typical circRNA, CDR1as, in the pathological process of vascular calcification in PH. Human pulmonary artery smooth muscle cell (HPASMC) calcification was analyzed by western blotting, immunofluorescence, alizarin red S staining, alkaline phosphatase activity analysis, and calcium deposition quantification. CDR1as targets were identified by bioinformatics analysis and validated by dual-luciferase reporter and RNA antisense purification assays. We identified that CDR1as was upregulated in hypoxic conditions and promoted a phenotypic switch of HPASMCs from a contractile to an osteogenic phenotype. Moreover, microRNA (miR)-7-5p was shown to be a target of CDR1as, and calcium/calmodulin-dependent kinase II-delta (CAMK2D) and calponin 3 (CNN3) were suggested to be the putative target genes and regulated by CDR1as/miR-7-5p. The results showed that the CDR1as/miR-7-5p/CNN3 and CAMK2D regulatory axis mediates HPASMC osteoblastic differentiation and calcification induced by hypoxia. This evidence reveals an approach to the treatment of PH.
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Affiliation(s)
- Cui Ma
- Central Laboratory of Harbin Medical University (Daqing), Daqing 163319, PR China
- College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing 163319, PR China
| | - Rui Gu
- Central Laboratory of Harbin Medical University (Daqing), Daqing 163319, PR China
- College of Basic Medical Sciences, Peking University, Beijing 100191, PR China
| | - Xiaoying Wang
- Central Laboratory of Harbin Medical University (Daqing), Daqing 163319, PR China
- College of Pharmacy, Harbin Medical University, Harbin 150081, PR China
| | - Siyu He
- Central Laboratory of Harbin Medical University (Daqing), Daqing 163319, PR China
- College of Pharmacy, Harbin Medical University, Harbin 150081, PR China
| | - June Bai
- Central Laboratory of Harbin Medical University (Daqing), Daqing 163319, PR China
- College of Pharmacy, Harbin Medical University, Harbin 150081, PR China
| | - Lixin Zhang
- Central Laboratory of Harbin Medical University (Daqing), Daqing 163319, PR China
- College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing 163319, PR China
| | - Junting Zhang
- Central Laboratory of Harbin Medical University (Daqing), Daqing 163319, PR China
- College of Pharmacy, Harbin Medical University, Harbin 150081, PR China
| | - Qian Li
- College of Pharmacy, Harbin Medical University, Harbin 150081, PR China
| | - Lihui Qu
- College of Basic Medical Sciences, Harbin Medical University (Daqing), Daqing 163319, PR China
| | - Wei Xin
- Central Laboratory of Harbin Medical University (Daqing), Daqing 163319, PR China
- College of Pharmacy, Harbin Medical University, Harbin 150081, PR China
| | - Yuan Jiang
- Central Laboratory of Harbin Medical University (Daqing), Daqing 163319, PR China
- College of Pharmacy, Harbin Medical University, Harbin 150081, PR China
| | - Fei Li
- Central Laboratory of Harbin Medical University (Daqing), Daqing 163319, PR China
- College of Basic Medical Sciences, Harbin Medical University (Daqing), Daqing 163319, PR China
| | - Xijuan Zhao
- Central Laboratory of Harbin Medical University (Daqing), Daqing 163319, PR China
- College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing 163319, PR China
| | - Daling Zhu
- Central Laboratory of Harbin Medical University (Daqing), Daqing 163319, PR China
- College of Pharmacy, Harbin Medical University, Harbin 150081, PR China
- State Province Key Laboratories of Biomedicine-Pharmaceutics of China, Daqing 163319, PR China
- Key Laboratory of Cardiovascular Medicine Research, Ministry of Education, Daqing 163319, PR China
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94
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CircSFXN1 regulates the behaviour of trophoblasts and likely mediates preeclampsia. Placenta 2020; 101:115-123. [DOI: 10.1016/j.placenta.2020.09.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 08/22/2020] [Accepted: 09/11/2020] [Indexed: 12/11/2022]
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Zhang Y, Yang H, Zhang Y, Shi J, Chen R. circCRAMP1L is a novel biomarker of preeclampsia risk and may play a role in preeclampsia pathogenesis via regulation of the MSP/RON axis in trophoblasts. BMC Pregnancy Childbirth 2020; 20:652. [PMID: 33109096 PMCID: PMC7590488 DOI: 10.1186/s12884-020-03345-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 10/16/2020] [Indexed: 12/13/2022] Open
Abstract
Background Preeclampsia is a severe disease in pregnant women, which is primarily managed by early screening and prevention. Circular RNAs (circRNAs) have increasingly been shown to be important biological regulators involved in numerous diseases. Further, increasing evidence has demonstrated that circRNAs can be used as diagnostic biomarkers. This study was conducted to evaluate the potential of circCRAMP1L, previously identified to be downregulated in preeclampsia, as a novel biomarker for predicting the development of preeclampsia. Methods We measured the expression of circCRAMP1L, which is reportedly relevant to trophoblast physiology, in plasma samples from 64 patients with preeclampsia and 64 age-, gestational age-, and body mass index-matched healthy pregnant women by qRT-PCR. MTT proliferation and transwell invasion assays revealed the biological role of circCRAMP1L in preeclampsia pathogenesis. RNA immunoprecipitation and dual-luciferase reporter assays clarified the mechanism underlying the biological function of circCRAMP1L in TEV-1 cells. Results circCRAMP1L circulating levels were significantly lower in patients with preeclampsia (2.66 ± 0.82, △Ct value) than in healthy pregnant women (3.95 ± 0.67, △Ct value, p < 0.001). The area under the receiver operating characteristic curve for circCRAMP1L was 0.813. Univariate and multivariate analyses identified circCRAMP1L as an independent predictor of preeclampsia. Furthermore, when circCRAMP1L was utilised in combination with its target protein macrophage stimulating protein (MSP), the predictive performance increased, with an area under the receiver operating characteristic curve of 0.928 (95% CI 0.882–0.974), 80.0% sensitivity, and 80.0% specificity. The in vitro results indicated that circCRAMP1L regulates cell proliferation, and invasion via MSP and RON proteins. We investigated the molecular mechanisms of these effects. In vitro, relative to the control group, circCRAMP1L overexpression significantly enhanced cell proliferation; furthermore, trophoblast cell invasion increased proportionally with circCRAMP1L expression. RNA immunoprecipitation and luciferase reporter gene illustrated that circCRAMP1L participated in regulation of trophoblast cell by regulating MSP. Conclusion Reduced plasma levels of circCRAMP1L may be associated with an increased risk of preeclampsia, and circCRAMP1L may be a novel biomarker of preeclampsia risk. Supplementary information Supplementary information accompanies this paper at 10.1186/s12884-020-03345-5.
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Affiliation(s)
- Yonggang Zhang
- Department of Clinical Laboratory, Shenzhen Longhua District Central Hospital, Guangdong Medical University, Shenzhen, 518110, Guangdong, China
| | - Hongling Yang
- Department of Clinical Laboratory, Guangzhou Women and Children's Medical Centre, Guangzhou Medical University, 9, Jinsui Road, Guangzhou, 510623, China.
| | - Yipeng Zhang
- Department of Clinical Laboratory, Shenzhen Longhua District Central Hospital, Guangdong Medical University, Shenzhen, 518110, Guangdong, China
| | - Junzhu Shi
- Department of Clinical Laboratory, Shenzhen Longhua District Central Hospital, Guangdong Medical University, Shenzhen, 518110, Guangdong, China
| | - Ronggui Chen
- Department of Clinical Laboratory, Shenzhen Longhua District Central Hospital, Guangdong Medical University, Shenzhen, 518110, Guangdong, China
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Yang P, Li J, Peng C, Tan Y, Chen R, Peng W, Gu Q, Zhou J, Wang L, Tang J, Feng Y, Sun Y. TCONS_00012883 promotes proliferation and metastasis via DDX3/YY1/MMP1/PI3K-AKT axis in colorectal cancer. Clin Transl Med 2020; 10:e211. [PMID: 33135346 PMCID: PMC7568852 DOI: 10.1002/ctm2.211] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 10/02/2020] [Accepted: 10/04/2020] [Indexed: 01/07/2023] Open
Abstract
Background Long noncoding RNAs (lncRNAs) have emerged as key regulators in multiple cancers, including colorectal cancer (CRC). However, the biological functions and molecular mechanisms underlying most lncRNAs in CRC remain largely unknown. Methods A novel lncRNA (TCONS_00012883) was identified using RNA sequencing. The level of TCONS_00012883 expression in CRC was analyzed by qRT‐PCR. The biological functions of TCONS_00012883 in CRC were investigated by a series of in vitro and in vivo experiments: CCK8, colony formation, EdU, flow cytometric assays, transwell assays, and mouse xenograft. The molecular mechanisms of TCONS_00012883 were demonstrated by RNA pulldown, mass spectrometry analysis, RIP, coimmunoprecipitation, RNA sequencing, chromatin immunoprecipitation, and rescue experiments. Results Elevated expression of TCONS_00012883 was confirmed in CRC and positively associated with a poor prognosis. Functionally, gain‐ and loss‐of‐function assays indicated that TCONS_00012883 promoted proliferation and metastasis of CRC cell lines in vitro and in vivo. Mechanistically, RNA pulldown and mass spectrometry analysis showed that DEAD‐box helicase 3 (DDX3) was the protein partner of TCONS_00012883. Furthermore, RNA sequencing assay revealed that matrix metallopeptidase 1 (MMP1) was the downstream of TCONS_00012883. Intriguingly, we found that transcription factor (YY1) could serve as a bridge between TCONS_00012883, DDX3, and MMP1. Conclusions TCONS_00012883 significantly promoted CRC progression via the DDX3/YY1/MMP1 axis, and thus, may act as a major role in diagnosis and therapy of CRC.
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Affiliation(s)
- Peng Yang
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China.,Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jie Li
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China.,Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Chaofan Peng
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China.,Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yuqian Tan
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China.,Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ranran Chen
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China.,Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wen Peng
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China.,Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Qiou Gu
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China.,Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jiahui Zhou
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China.,Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Lu Wang
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China.,Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Junwei Tang
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China.,Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yifei Feng
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China.,Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yueming Sun
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China.,Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Li X, Li Y, Yu X, Jin F. Identification and validation of stemness-related lncRNA prognostic signature for breast cancer. J Transl Med 2020; 18:331. [PMID: 32867770 PMCID: PMC7461324 DOI: 10.1186/s12967-020-02497-4] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 08/21/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Long noncoding RNAs (lncRNAs) are emerging as crucial contributors to the development of breast cancer and are involved in the stemness regulation of breast cancer stem cells (BCSCs). LncRNAs are closely associated with the prognosis of breast cancer patients. It is critical to identify BCSC-related lncRNAs with prognostic value in breast cancer. METHODS A co-expression network of BCSC-related mRNAs-lncRNAs from The Cancer Genome Atlas (TCGA) was constructed. Univariate and multivariate Cox proportional hazards analyses were used to identify a stemness risk model with prognostic value. Kaplan-Meier analysis, univariate and multivariate Cox regression analyses and receiver operating characteristic (ROC) curve analysis were performed to validate the risk model. Principal component analysis (PCA) and Gene Set Enrichment Analysis (GSEA) functional annotation were conducted to analyze the risk model. RESULTS In this study, BCSC-related lncRNAs in breast cancer were identified. We evaluated the prognostic value of these BCSC-related lncRNAs and eventually obtained a prognostic risk model consisting of 12 BCSC-related lncRNAs (Z68871.1, LINC00578, AC097639.1, AP003119.3, AP001207.3, LINC00668, AL122010.1, AC245297.3, LINC01871, AP000851.2, AC022509.2 and SEMA3B-AS1). The risk model was further verified as a novel independent prognostic factor for breast cancer patients based on the calculated risk score. Moreover, based on the risk model, the low- risk and high-risk groups displayed different stemness statuses. CONCLUSIONS These findings suggested that the 12 BCSC-related lncRNA signature might be a promising prognostic factor for breast cancer and can promote the management of BCSC-related therapy in clinical practice.
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Affiliation(s)
- Xiaoying Li
- Department of Breast Surgery, The First Affiliated Hospital of China Medical University, 155 Nanjing Road, Shenyang, 110001, China.,Department of Cell Biology, Key Laboratory of Cell Biology, Ministry of Public Health, and Key Laboratory of Medical Cell Biology, Ministry of Education, China Medical University, 77 Puhe Road, Shenyang, 110122, China
| | - Yang Li
- Department of Cell Biology, Key Laboratory of Cell Biology, Ministry of Public Health, and Key Laboratory of Medical Cell Biology, Ministry of Education, China Medical University, 77 Puhe Road, Shenyang, 110122, China
| | - Xinmiao Yu
- Department of Breast Surgery, The First Affiliated Hospital of China Medical University, 155 Nanjing Road, Shenyang, 110001, China.
| | - Feng Jin
- Department of Breast Surgery, The First Affiliated Hospital of China Medical University, 155 Nanjing Road, Shenyang, 110001, China.
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Meng L, Liu S, Liu F, Sang M, Ju Y, Fan X, Gu L, Li Z, Geng C, Sang M. ZEB1-Mediated Transcriptional Upregulation of circWWC3 Promotes Breast Cancer Progression through Activating Ras Signaling Pathway. MOLECULAR THERAPY. NUCLEIC ACIDS 2020; 22:124-137. [PMID: 32916598 PMCID: PMC7490471 DOI: 10.1016/j.omtn.2020.08.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/12/2020] [Accepted: 08/14/2020] [Indexed: 12/19/2022]
Abstract
Zinc finger E-box binding homeobox 1 (ZEB1) has been widely recognized as an important driver of tumor growth and metastasis. However, nothing is known about ZEB1-regulated circular (circ)RNAs in cancer. In the current study, we evaluated the function of a novel ZEB1-regulated circRNA derived from the WWC3 gene locus, circWWC3 in breast cancer progression. We found that ZEB1 upregulated circWWC3 expression but not the linear WWC3 mRNA expression. circWWC3 is highly expressed in breast cancer tissues and is associated with the poor prognosis of breast cancer patients. Silencing of circWWC3 significantly suppresses the proliferation, migration, and invasion of breast cancer cells. Mechanically, circWWC3 upregulates multiple oncogenes' expression of the Ras signaling pathway through acting as the sponge of microRNA (miR)-26b-3p and miR-660-3p. Moreover, short hairpin (sh)RNA-mediated knockdown of circWWC3 partially antagonized ZEB1-mediated breast cancer growth and metastasis in vivo. Our findings reveal that ZEB1-mediated upregulation of circWWC3 promotes breast cancer progression through activating Ras signaling pathway, which provides a potential therapeutic target and prognostic biomarker for breast cancer.
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Affiliation(s)
- Lingjiao Meng
- Research Center, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Sihua Liu
- Research Center, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Fei Liu
- Research Center, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Meijie Sang
- Research Center, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China; Department of Surgical Nursing, Hebei University of Chinese Medicine, Xingyuan Road, Shijiazhuang, Hebei 050200, P.R. China
| | - Yingchao Ju
- Animal Center, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Xiaojie Fan
- Research Center, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China; Pathology Department, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Lina Gu
- Research Center, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China; Key Laboratory for Tumor Diagnosis, Prevention and Therapy in Hebei Province, Shijiazhuang, Hebei 050017, P.R. China
| | - Ziyi Li
- Research Center, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Cuizhi Geng
- Breast Diagnostic and Therapeutic Center, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China.
| | - Meixiang Sang
- Research Center, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China; Key Laboratory for Tumor Diagnosis, Prevention and Therapy in Hebei Province, Shijiazhuang, Hebei 050017, P.R. China.
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Xie S, Chang Y, Jin H, Yang F, Xu Y, Yan X, Lin A, Shu Q, Zhou T. Non-coding RNAs in gastric cancer. Cancer Lett 2020; 493:55-70. [PMID: 32712234 DOI: 10.1016/j.canlet.2020.06.022] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/19/2020] [Accepted: 06/28/2020] [Indexed: 12/11/2022]
Abstract
Non-coding RNAs (ncRNAs) are functional RNA molecules that play crucial regulatory roles in many fundamental biological processes. The dysregulation of ncRNAs is significantly associated with the progression of human cancers, including gastric cancer. In this review, we have summarized the oncogenic or tumor-suppressive roles and the regulatory mechanisms of lncRNAs, miRNAs, circRNAs and piRNAs, and have discussed their potential as biomarkers or therapeutic targets in gastric cancer.
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Affiliation(s)
- Shanshan Xie
- The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, 310052, China; Department of Cell Biology and Cancer Institute of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Yongxia Chang
- Department of Cell Biology and Cancer Institute of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China; Cancer Center, Zhejiang University, Hangzhou, 310058, China
| | - Hao Jin
- Department of Cell Biology and Cancer Institute of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China; Cancer Center, Zhejiang University, Hangzhou, 310058, China
| | - Feng Yang
- Department of Cell Biology and Cancer Institute of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China; Cancer Center, Zhejiang University, Hangzhou, 310058, China
| | - Yanjun Xu
- Institute of Cancer Research and Basic Medical Sciences of Chinese Academy of Sciences, Cancer Hospital of University of Chinese Academy of Sciences, Zhejiang Cancer Hospital, Hangzhou, 310022, China
| | - Xiaoyi Yan
- Cancer Center, Zhejiang University, Hangzhou, 310058, China
| | - Aifu Lin
- MOE Laboratory of Biosystem Homeostasis and Protection, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China.
| | - Qiang Shu
- The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, 310052, China.
| | - Tianhua Zhou
- Department of Cell Biology and Cancer Institute of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China; Cancer Center, Zhejiang University, Hangzhou, 310058, China; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada.
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Wang HY, Wang YP, Zeng X, Zheng Y, Guo QH, Ji R, Zhou YN. Circular RNA is a popular molecule in tumors of the digestive system (Review). Int J Oncol 2020; 57:21-42. [PMID: 32377736 PMCID: PMC7252451 DOI: 10.3892/ijo.2020.5054] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 04/06/2020] [Indexed: 02/06/2023] Open
Abstract
Most tumors of the digestive system, including esophageal, gastric, liver and colorectal cancer, are malignant tumors that are associated with rates of high morbidity and mortality. The lack of effective methods for early diagnosis is an important cause of poor prognosis for these malignancies. Circular RNAs (circRNAs) belong to a family of endogenous, covalently closed non‑coding RNAs that are characterized as having no 5' cap structures or 3' poly‑A tails. Shortly following discovery, circRNAs were considered to be a product of mis‑splicing and have no significant biological function. However, in recent years, accumulating evidence is demonstrating that they serve key roles in tumorigenesis and have the potential to serve as diagnostic markers. The present article summarizes the biogenesis and function of circRNAs and reviews their role in seven common types of tumor of the digestive system whilst exploring their potential as tumor markers and the significant roles they can serve in the digestive system, in addition to providing a referencing point for future studies of digestive system malignancies.
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Affiliation(s)
- Hao-Ying Wang
- Department of Gastroenterology
- Key Laboratory for Gastrointestinal Diseases of Gansu Province, The First Hospital of Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Yu-Ping Wang
- Department of Gastroenterology
- Key Laboratory for Gastrointestinal Diseases of Gansu Province, The First Hospital of Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Xi Zeng
- Department of Gastroenterology
- Key Laboratory for Gastrointestinal Diseases of Gansu Province, The First Hospital of Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Ya Zheng
- Department of Gastroenterology
- Key Laboratory for Gastrointestinal Diseases of Gansu Province, The First Hospital of Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Qing-Hong Guo
- Department of Gastroenterology
- Key Laboratory for Gastrointestinal Diseases of Gansu Province, The First Hospital of Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Rui Ji
- Department of Gastroenterology
- Key Laboratory for Gastrointestinal Diseases of Gansu Province, The First Hospital of Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Yong-Ning Zhou
- Department of Gastroenterology
- Key Laboratory for Gastrointestinal Diseases of Gansu Province, The First Hospital of Lanzhou University, Lanzhou, Gansu 730000, P.R. China
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