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Huang M, Gao T, Chen X, Yi J, Zhou X. Circ_0087851 suppresses colorectal cancer malignant progression through triggering miR-593-3p/BAP1-mediated ferroptosis. J Cancer Res Clin Oncol 2024; 150:204. [PMID: 38642144 PMCID: PMC11032280 DOI: 10.1007/s00432-024-05643-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 02/05/2024] [Indexed: 04/22/2024]
Abstract
BACKGROUND Emerging research has validated that circular RNAs (circRNAs) have indispensable regulatory functions in tumorigenesis, including colorectal cancer (CRC). Ferroptosis is a specific cell death form and implicates in the malignant progression of tumors. Here, this study aimed to investigate the biofunction of circ_0087851 in tumor progression and ferroptosis of CRC, as well as its underlying molecular mechanism. METHODS The expression pattern of circ_0087851 in CRC was validated by qRT-PCR. The biological characteristics of circ_0087851 in CRC were assessed through CCK-8, colony formation and transwell assays in vitro. The ferroptosis was measured using ferroptosis-related reagents on iron, Fe2+, and lipid ROS detection. Bioinformatics, luciferase reporter, and RNA pulldown assays were employed to reveal the circ_0087851-mediated regulatory network. In addition, the effect of circ_0087851 on tumor growth in vivo was detected using a xenograft model. RESULTS Circ_0087851 was notably diminished in CRC tissues and cells. Functionally, overexpression of circ_0087851 suppressed CRC cell growth, migration, invasion, and facilitated ferroptosis in vitro. Meanwhile, circ_0087851 upregulation impeded CRC growth in vivo. Mechanistically, circ_0087851 functioned as a molecular sponge for miR-593-3p, and BRCA1 associated protein 1 (BAP1) was identified as a downstream target of miR-593-3p. Besides, rescue experiments revealed that miR-593-3p overexpression or silencing of BAP1 reversed circ_0087851-mediated CRC progression. CONCLUSION Circ_0087851 performed as a tumor suppressor and ferroptosis promoter by the miR-593-3p/BAP1 axis, providing novel biomarker and therapeutic target for the clinical management of CRC.
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Affiliation(s)
- Ming Huang
- Department of Pathology, Affiliated Hospital of Xiangnan University, Chenzhou, 423000, Hunan, China
| | - Ting Gao
- Department of Pathology, Affiliated Hospital of Xiangnan University, Chenzhou, 423000, Hunan, China
| | - Xianyong Chen
- Department of Pathology, Affiliated Hospital of Xiangnan University, Chenzhou, 423000, Hunan, China
| | - Junlei Yi
- Department of Pathology, Affiliated Hospital of Xiangnan University, Chenzhou, 423000, Hunan, China
| | - Xuan Zhou
- Gastrointestinal Surgery, Affiliated Hospital of Xiangnan University, No. 25, Renmin West Road, Beihu District, Chenzhou, 423000, Hunan, China.
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2
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Dhahri H, Fondufe-Mittendorf YN. Exploring the interplay between PARP1 and circRNA biogenesis and function. WILEY INTERDISCIPLINARY REVIEWS. RNA 2023; 15:e1823. [PMID: 37957925 PMCID: PMC11089078 DOI: 10.1002/wrna.1823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/06/2023] [Accepted: 10/10/2023] [Indexed: 11/15/2023]
Abstract
PARP1 (poly-ADP-ribose polymerase 1) is a multidomain protein with a flexible and self-folding structure that allows it to interact with a wide range of biomolecules, including nucleic acids and target proteins. PARP1 interacts with its target molecules either covalently via PARylation or non-covalently through its PAR moieties induced by auto-PARylation. These diverse interactions allow PARP1 to participate in complex regulatory circuits and cellular functions. Although the most studied PARP1-mediated functions are associated with DNA repair and cellular stress response, subsequent discoveries have revealed additional biological functions. Based on these findings, PARP1 is now recognized as a major modulator of gene expression. Several discoveries show that this multifunctional protein has been intimately connected to several steps of mRNA biogenesis, from transcription initiation to mRNA splicing, polyadenylation, export, and translation of mRNA to proteins. Nevertheless, our understanding of PARP1's involvement in the biogenesis of both coding and noncoding RNA, notably circular RNA (circRNA), remains restricted. In this review, we outline the possible roles of PARP1 in circRNA biogenesis. A full examination of the regulatory roles of PARP1 in nuclear processes with an emphasis on circRNA may reveal new avenues to control dysregulation implicated in the pathogenesis of several diseases such as neurodegenerative disorders and cancers. This article is categorized under: RNA Interactions with Proteins and Other Molecules > Protein-RNA Interactions: Functional Implications Regulatory RNAs/RNAi/Riboswitches > Regulatory RNAs RNA Processing > Splicing Regulation/Alternative Splicing.
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Affiliation(s)
- Hejer Dhahri
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, Kentucky, USA
- Department of Epigenetics, Van Andel Research Institute, Grand Rapids, Michigan, USA
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3
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Zhang X, Guo G, Liu R, Wu T, Wang Z, Zhang Z. CircLDLRAD3 inhibits Oral squamous cell carcinoma progression by regulating miR-558/Smad4/TGF-β. J Cell Mol Med 2023; 27:3271-3285. [PMID: 37563869 PMCID: PMC10623532 DOI: 10.1111/jcmm.17898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 07/26/2023] [Accepted: 07/30/2023] [Indexed: 08/12/2023] Open
Abstract
Oral squamous cell carcinoma (OSCC) is a malignant neoplasm with high mortality and morbidity. The role of circRNA and its molecular mechanism in OSCC remains largely unknown. The study aims to explore the role of a novel circular RNA (circLDLRAD3) in OSCC and its underlying mechanism. PCR and fluorescence in situ hybridization were used to explore the expression features of circLDLRAD3 in OSCC. The effects of circLDLRAD3 on the behaviour of OSCC were investigated using CCK-8, colony formation assay, transwell and animal experiments. Bioinformatics analysis along with dual luciferase reporter assay and RIP assay were used to reveal the interaction between circLDLRAD3, miR-558 and Smad4. It was revealed that circLDLRAD3 exhibited low expression status in OSCC. CircLDLRAD3 inhibits proliferation, migration, and invasion of OSCC cells both in vitro and in vivo. Mechanistically, circLDLRAD3 could bind with miR-558 to positively regulate its target gene Smad4 expression. Rescue experiments further confirmed both miR-558 overexpression and Smad4 knockdown could reverse the influence of circLDLRAD3 on OSCC phenotypes. Moreover, circLDLRAD3 regulate the TGF-β signalling pathways to influence EMT through miR-558/Smad4 axis. Our study found that circLDLRAD3 is downregulated in OSCC and verified its tumour suppressor function and mechanism in OSCC through sponging miR-558 to regulate miR-558/Smad4/TGF-β axis. The characterization of such regulating network uncovers an important mechanism underlying OSCC progression, which could provide promising targets targeted therapy strategies for OSCC in the future.
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Affiliation(s)
- Xue Zhang
- The VIP DepartmentSchool and Hospital of Stomatology, China Medical UniversityShenyangChina
- Department of Surgical Oncology and General SurgeryThe First Hospital of China Medical University; Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumours (China Medical University)ShenyangChina
| | - Guang‐Yu Guo
- The VIP DepartmentSchool and Hospital of Stomatology, China Medical UniversityShenyangChina
- Department of Surgical Oncology and General SurgeryThe First Hospital of China Medical University; Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumours (China Medical University)ShenyangChina
| | - Ru‐Yue Liu
- The VIP DepartmentSchool and Hospital of Stomatology, China Medical UniversityShenyangChina
- Department of Surgical Oncology and General SurgeryThe First Hospital of China Medical University; Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumours (China Medical University)ShenyangChina
| | - Ting Wu
- The VIP DepartmentSchool and Hospital of Stomatology, China Medical UniversityShenyangChina
- Department of Surgical Oncology and General SurgeryThe First Hospital of China Medical University; Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumours (China Medical University)ShenyangChina
| | - Zhen‐Hua Wang
- Department of Physiology, School of Life SciencesChina Medical UniversityShenyangChina
| | - Zhong‐Ti Zhang
- The VIP DepartmentSchool and Hospital of Stomatology, China Medical UniversityShenyangChina
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4
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Peng X, Chen X, Peng S, Chen Y, Li Y, Tian Y. CircPRRC2C Promotes the Oncogenic Phenotypes of Laryngeal Squamous Cell Carcinoma Cells via MiR-136-5p/HOXD11 Axis. Mol Biotechnol 2023:10.1007/s12033-023-00868-y. [PMID: 37728841 DOI: 10.1007/s12033-023-00868-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 08/21/2023] [Indexed: 09/21/2023]
Abstract
The involvement of circular RNAs (circRNAs) in laryngeal squamous cell carcinoma (LSCC) carcinogenesis has gradually been proposed. Herein, we aimed to explore the function and mechanism of circPRRC2C in LSCC. Quantitative real-time polymerase chain reaction (qRT-PCR) and Western blotting were used for detecting the content of genes and proteins. In vitro experiments were conducted using 5-ethynyl-2'-deoxyuridine, colony formation, flow cytometry, and transwell assays. The binding between miR-136-5p and circPRRC2C or Homeobox D11 (HOXD11) was confirmed by using the dual-luciferase reporter assay. The murine xenograft model was established for in vivo analysis. The commercial kit was used for exosome separation. CircPRRC2C is a stable circRNA, and was highly expressed in LSCC tissues and cell lines. Functionally, circPRRC2C deficiency impaired LSCC cell proliferation, migration and invasion but induced cell apoptosis in vitro and impeded tumor growth in vivo, however, circPRRC2C overexpression showed the exact opposite effects. Mechanistically, circPRRC2C directly targeted miR-136-5p, which showed inhibitory effects on the growth and mobility of LSCC cells. Meanwhile, miR-136-5p directly targeted HOXD11, and circPRRC2C/miR-136-5p/HOXD11 formed a feedback loop in LSCC cells. Further rescue assays exhibited that circPRRC2C exerted its effects by miR-136-5p/HOXD11 axis. In addition, circPRRC2C was stably packaged into exosomes and showed potential diagnostic value for LSCC. CircPRRC2C acted as an oncogene to promote LSCC cell oncogenic phenotypes via miR-136-5p/HOXD11 axis, besides, circPRRC2C was stably packaged into exosomes, indicating the potential application of circPRRC2C-targeting agents in the treatment in LSCC.
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Affiliation(s)
- Xiu Peng
- Department of Otolaryngology, Wuhan Hospital of Traditional Chinese Medicine, No.49, Nihuangpi Road, Wuhan, 430022, Hubei, China
| | - Xintian Chen
- College of Life Science, South-Central MinZu University, Wuhan, 430074, China
- College of Resource and Environmental Science, South-Central MinZu University, Wuhan, 430074, China
| | - Shuai Peng
- Hubei Provincial Engineering Laboratory for Clean Production and High Value Utilization of Bio-Based Textile Materials, Wuhan Textile University, Wuhan, 430073, China.
- College of Life Science, South-Central MinZu University, Wuhan, 430074, China.
| | - Yingming Chen
- College of Resource and Environmental Science, South-Central MinZu University, Wuhan, 430074, China
| | - Yong Li
- Department of Otolaryngology, Wuhan Hospital of Traditional Chinese Medicine, No.49, Nihuangpi Road, Wuhan, 430022, Hubei, China.
| | - Yang Tian
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
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5
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Jiang C, Zhang J, Wang W, Shan Z, Sun F, Tan Y, Tong Y, Qiu Y. Extracellular vesicles in gastric cancer: role of exosomal lncRNA and microRNA as diagnostic and therapeutic targets. Front Physiol 2023; 14:1158839. [PMID: 37664422 PMCID: PMC10469264 DOI: 10.3389/fphys.2023.1158839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 07/31/2023] [Indexed: 09/05/2023] Open
Abstract
Extracellular vesicles (EVs), including exosomes, play a crucial role in intercellular communication and have emerged as important mediators in the development and progression of gastric cancer. This review discusses the current understanding of the role of EVs, particularly exosomal lncRNA and microRNA, in gastric cancer and their potential as diagnostic and therapeutic targets. Exosomes are small membrane-bound particles secreted by both cancer cells and stromal cells within the tumor microenvironment. They contain various ncRNA and biomolecules, which can be transferred to recipient cells to promote tumor growth and metastasis. In this review, we highlighted the importance of exosomal lncRNA and microRNA in gastric cancer. Exosomal lncRNAs have been shown to regulate gene expression by interacting with transcription factors or chromatin-modifying enzymes, which regulate gene expression by binding to target mRNAs. We also discuss the potential use of exosomal lncRNAs and microRNAs as diagnostic biomarkers for gastric cancer. Exosomes can be isolated from various bodily fluids, including blood, urine, and saliva. They contain specific molecules that reflect the molecular characteristics of the tumor, making them promising candidates for non-invasive diagnostic tests. Finally, the potential of targeting exosomal lncRNAs and microRNAs as a therapeutic strategy for gastric cancer were reviewed as wee. Inhibition of specific molecules within exosomes has been shown to suppress tumor growth and metastasis in preclinical models. In conclusion, this review article provides an overview of the current understanding of the role of exosomal lncRNA and microRNA in gastric cancer. We suggest that further research into these molecules could lead to new diagnostic tools and therapeutic strategies for this deadly disease.
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Affiliation(s)
- Chengyao Jiang
- Department of Gastric Surgery, Liaoning Cancer Hospital and Institute, Cancer Hospital of China Medical University, Shenyang, China
| | - Jianjun Zhang
- Department of Gastric Surgery, Liaoning Cancer Hospital and Institute, Cancer Hospital of China Medical University, Shenyang, China
| | - Wentao Wang
- Department of Gastric Surgery, Liaoning Cancer Hospital and Institute, Cancer Hospital of China Medical University, Shenyang, China
| | - Zexing Shan
- Department of Gastric Surgery, Liaoning Cancer Hospital and Institute, Cancer Hospital of China Medical University, Shenyang, China
| | - Fan Sun
- Department of Gastric Surgery, Liaoning Cancer Hospital and Institute, Cancer Hospital of China Medical University, Shenyang, China
| | - Yuen Tan
- Department of Gastric Surgery, Liaoning Cancer Hospital and Institute, Cancer Hospital of China Medical University, Shenyang, China
| | - Yilin Tong
- Department of Gastric Surgery, Liaoning Cancer Hospital and Institute, Cancer Hospital of China Medical University, Shenyang, China
| | - Yue Qiu
- Medical Oncology Department of Gastrointestinal Cancer, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning, China
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6
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Li D, Wang W, Liu B, Jin D, Wang Y, He G, Guo L, Liu W, Li Y. Characterization of circSEC11A as a novel regulator of Iodine-125 radioactive seed-induced anticancer effects in hepatocellular carcinoma via targeting ZHX2/GADD34 axis. Cell Death Discov 2023; 9:294. [PMID: 37563132 PMCID: PMC10415397 DOI: 10.1038/s41420-023-01593-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/19/2023] [Accepted: 08/02/2023] [Indexed: 08/12/2023] Open
Abstract
Iodine-125 (I-125) radioactive seed implantation is used for the local treatment of hepatocellular carcinoma (HCC), but the molecular mechanisms regulating its anticancer effects remain incompletely understood. In this study, we report that hsa_circ_0000647 (circSEC11A) is highly expressed after I-125 treatment in HCC cell lines and tissues and is a key regulator of I-125-induced anticancer effects. CircSEC11A acts as a competing endogenous RNA (ceRNA) to sponge miR-3529-3p, promoting the expression of zinc fingers and homeoboxes 2 (ZHX2) and enhancing I-125-induced anticancer effects. Dual-luciferase reporter assay, RNA pull-down, RNA immunoprecipitation, and fluorescence in situ hybridization were thereafter performed to verify the interaction among the molecules. Anticancer effects were detected using CCK-8, flow cytometry, TUNEL, EdU, transwell, and wound healing assays. Furthermore, ZHX2 transcriptionally inhibits GADD34, a negative regulator of endoplasmic reticulum stress (ERS), to enhance I-125- induced anticancer effects in vivo and in vitro. In conclusion, we characterized circSEC11A as a novel regulator of I-125-induced anticancer effects in HCC via miR-3529-3p/ZHX2/GADD34 axis-mediated ERS. Thus, circSEC11A may act as a potential therapeutic target for I-125 implantation in the clinic.
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Affiliation(s)
- Dong Li
- Department of Interventional Medicine, The Second Hospital of Shandong University, Jinan, China
- Institute of Interventional Oncology, Shandong University, Jinan, China
| | - Wujie Wang
- Department of Interventional Medicine, The Second Hospital of Shandong University, Jinan, China
- Institute of Interventional Oncology, Shandong University, Jinan, China
| | - Bin Liu
- Department of Interventional Medicine, The Second Hospital of Shandong University, Jinan, China
- Institute of Interventional Oncology, Shandong University, Jinan, China
| | - Die Jin
- Department of Interventional Medicine, The Second Hospital of Shandong University, Jinan, China
- Institute of Interventional Oncology, Shandong University, Jinan, China
| | - Yang Wang
- Department of Interventional Medicine, The Second Hospital of Shandong University, Jinan, China
- Institute of Interventional Oncology, Shandong University, Jinan, China
| | - Guanghui He
- Department of Interventional Medicine, Weifang Second People's Hospital, Weifang, China
| | - Lei Guo
- Department of Vascular Anomalies and Interventional Radiology, Children's Hospital Affiliated to Shandong University, Jinan, China
| | - Wen Liu
- Department of Interventional Medicine, The Second Hospital of Shandong University, Jinan, China.
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, Xiamen, China.
| | - Yuliang Li
- Department of Interventional Medicine, The Second Hospital of Shandong University, Jinan, China.
- Institute of Interventional Oncology, Shandong University, Jinan, China.
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7
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Dżaman K, Czerwaty K, Reichert TE, Szczepański MJ, Ludwig N. Expression and Regulatory Mechanisms of MicroRNA in Cholesteatoma: A Systematic Review. Int J Mol Sci 2023; 24:12277. [PMID: 37569652 PMCID: PMC10418341 DOI: 10.3390/ijms241512277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 07/29/2023] [Accepted: 07/30/2023] [Indexed: 08/13/2023] Open
Abstract
Cholesteatoma is a temporal bone disease characterized by dysfunctions of keratinocytes. MicroRNAs (miRNAs) are evolutionary conserved noncoding RNAs that regulate mRNA expression. They can be packaged into exosomes and transported to target cells that can be used in the future therapy of cholesteatoma. This study aimed to collect knowledge on the role of miRNAs and exosomal miRNAs in cholesteatoma and was conducted according to the PRISMA guidelines for systematic reviews. Four databases were screened: Pubmed/MEDLINE, Web of Science, Scopus, and the Cochrane Library. The last search was run on the 6th of June 2023. We included full-text original studies written in English, which examined miRNAs in cholesteatoma. The risk of bias was assessed using the Office of Health Assessment and Translation (OHAT) Risk of Bias Rating Tool, modified for the needs of this review. We identified 118 records and included 18 articles. Analyses revealed the downregulation of exosomal miR-17 as well as miR-10a-5p, miR-125b, miR-142-5p, miR34a, miR-203a, and miR-152-5p and the overexpression of exosomal miR-106b-5p as well as miR-1297, miR-26a-5p, miR-199a, miR-508-3p, miR-21-3p, miR-584-5p, and miR-16-1-3p in cholesteatoma. The role of differentially expressed miRNAs in cholesteatoma, including cell proliferation, apoptosis, the cell cycle, differentiation, bone resorption, and the remodeling process, was confirmed, making them a potential therapeutic target in this disease.
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Affiliation(s)
- Karolina Dżaman
- Department of Otolaryngology, The Medical Centre of Postgraduate Education, 01-813 Warsaw, Poland; (K.D.); (K.C.)
| | - Katarzyna Czerwaty
- Department of Otolaryngology, The Medical Centre of Postgraduate Education, 01-813 Warsaw, Poland; (K.D.); (K.C.)
| | - Torsten E. Reichert
- Department of Oral and Maxillofacial Surgery, University Hospital Regensburg, 93053 Regensburg, Germany; (T.E.R.); (N.L.)
| | - Mirosław J. Szczepański
- Department of Otolaryngology, The Medical Centre of Postgraduate Education, 01-813 Warsaw, Poland; (K.D.); (K.C.)
- Department of Biochemistry, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Nils Ludwig
- Department of Oral and Maxillofacial Surgery, University Hospital Regensburg, 93053 Regensburg, Germany; (T.E.R.); (N.L.)
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8
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Baker A, Lorch J, VanderWeele D, Zhang B. Smart Nanocarriers for the Targeted Delivery of Therapeutic Nucleic Acid for Cancer Immunotherapy. Pharmaceutics 2023; 15:1743. [PMID: 37376190 DOI: 10.3390/pharmaceutics15061743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/09/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
A wide variety of therapeutic approaches and technologies for delivering therapeutic agents have been investigated for treating cancer. Recently, immunotherapy has achieved success in cancer treatment. Successful clinical results of immunotherapeutic approaches for cancer treatment were led by antibodies targeting immune checkpoints, and many have advanced through clinical trials and obtained FDA approval. A major opportunity remains for the development of nucleic acid technology for cancer immunotherapy in the form of cancer vaccines, adoptive T-cell therapies, and gene regulation. However, these therapeutic approaches face many challenges related to their delivery to target cells, including their in vivo decay, the limited uptake by target cells, the requirements for nuclear penetration (in some cases), and the damage caused to healthy cells. These barriers can be avoided and resolved by utilizing advanced smart nanocarriers (e.g., lipids, polymers, spherical nucleic acids, metallic nanoparticles) that enable the efficient and selective delivery of nucleic acids to the target cells and/or tissues. Here, we review studies that have developed nanoparticle-mediated cancer immunotherapy as a technology for cancer patients. Moreover, we also investigate the crosstalk between the function of nucleic acid therapeutics in cancer immunotherapy, and we discuss how nanoparticles can be functionalized and designed to target the delivery and thus improve the efficacy, toxicity, and stability of these therapeutics.
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Affiliation(s)
- Abu Baker
- Department of Medicine, Hematology/Oncology Division, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Jochen Lorch
- Department of Medicine, Hematology/Oncology Division, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - David VanderWeele
- Department of Medicine, Hematology/Oncology Division, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Bin Zhang
- Department of Medicine, Hematology/Oncology Division, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
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Yang X, Wang Y, Rong S, An J, Lan X, Yin B, Sun Y, Wang P, Tan B, Xuan Y, Xie S, Su Z, Li Y. Gene SH3BGRL3 regulates acute myeloid leukemia progression through circRNA_0010984 based on competitive endogenous RNA mechanism. Front Cell Dev Biol 2023; 11:1173491. [PMID: 37397256 PMCID: PMC10313326 DOI: 10.3389/fcell.2023.1173491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 05/22/2023] [Indexed: 07/04/2023] Open
Abstract
Introduction: Acute myeloid leukemia (AML) is a malignant proliferative disease affecting the bone marrow hematopoietic system and has a poor long-term outcome. Exploring genes that affect the malignant proliferation of AML cells can facilitate the accurate diagnosis and treatment of AML. Studies have confirmed that circular RNA (circRNA) is positively correlated with its linear gene expression. Therefore, by exploring the effect of SH3BGRL3 on the malignant proliferation of leukemia, we further studied the role of circRNA produced by its exon cyclization in the occurrence and development of tumors. Methods: Genes with protein-coding function obtained from the TCGA database. we detected the expression of SH3BGRL3 and circRNA_0010984 by real-time quantitative polymerase chain reaction (qRT-PCR). We synthesized plasmid vectors and carried out cell experiments, including cell proliferation, cell cycle and cell differentiation by cell transfection. We also studied the transfection plasmid vector (PLVX-SHRNA2-PURO) combined with a drug (daunorubicin) to observe the therapeutic effect. The miR-375 binding site of circRNA_0010984 was queried using the circinteractome databases, and the relationship was validated by RNA immunoprecipitation and Dual-luciferase reporter assay. Finally, a protein-protein interaction network was constructed with a STRING database. GO and KEGG functional enrichment identified mRNA-related functions and signaling pathways regulated by miR-375. Results: We identified the related gene SH3BGRL3 in AML and explored the circRNA_0010984 produced by its cyclization. It has a certain effect on the disease progression. In addition, we verified the function of circRNA_0010984. We found that circSH3BGRL3 knockdown specifically inhibited the proliferation of AML cell lines and blocked the cell cycle. We then discussed the related molecular biological mechanisms. CircSH3BGRL3 acts as an endogenous sponge for miR-375 to isolate miR-375 and inhibits its activity, increases the expression of its target YAP1, and ultimately activates the Hippo signaling pathway involved in malignant tumor proliferation. Discussion: We found that SH3BGRL3 and circRNA_0010984 are important to AML. circRNA_0010984 was significantly up-regulated in AML and promoted cell proliferation by regulating miR-375 through molecular sponge action.
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Affiliation(s)
- Xiancong Yang
- Department of Clinical Laboratory, The Second Medical College of Binzhou Medical University, Yantai, China
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai, China
| | - Yaoyao Wang
- Department of Pediatrics, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, China
| | - Simin Rong
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai, China
| | - Jiayue An
- Department of Clinical Laboratory, The Second Medical College of Binzhou Medical University, Yantai, China
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai, China
| | - Xiaoxu Lan
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai, China
| | - Baohui Yin
- Department of Pediatrics, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, China
| | - Yunxiao Sun
- Department of Pediatrics, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, China
| | - Pingyu Wang
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai, China
| | - Boyu Tan
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai, China
| | - Ye Xuan
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai, China
| | - Shuyang Xie
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai, China
| | - Zhenguo Su
- Department of Clinical Laboratory, The Second Medical College of Binzhou Medical University, Yantai, China
| | - Youjie Li
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai, China
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10
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Liu L, Sang M, Shi J, Zheng Y, Meng L, Gu L, Li Z, Liu F, Bu J, Duan X, Zhao F, Zhang W, Shan B. CircRNA mannosidase alpha class 1A member 2 promotes esophageal squamous cell carcinoma progression by regulating C-C chemokine ligand 5. Biochem Biophys Res Commun 2023; 645:61-70. [PMID: 36680938 DOI: 10.1016/j.bbrc.2023.01.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/04/2023] [Accepted: 01/14/2023] [Indexed: 01/19/2023]
Abstract
Esophageal squamous cell carcinoma (ESCC) is a common malignancy with high morbidity and mortality. Although circular RNAs (circRNAs) play important roles in various cancers including ESCC, the role of the circRNA mannosidase alpha class 1A member 2 (circMAN1A2) in ESCC has been rarely studied. This study aimed to explore the role of circMAN1A2 in ESCC. CircMAN1A2 expression in ESCC tissues and cells was evaluated, and the relationship between circMAN1A2 expression and prognosis in patients with ESCC was analyzed. C-C chemokine ligand 5 (CCL5) was found to be a downstream target of circMAN1A2 by analysing the Agilent Microarray. Next, we performed in vitro and in vivo xenotransplantation assays to explore the role of circMAN1A2 in ESCC. We observed that high circMAN1A2 expression is associated with poor prognosis in patients with ESCC. Suppression of circMAN1A2 expression inhibits the proliferation, migration, and invasiveness of ESCC via regulating CCL5. Our results suggest that circMAN1A2 can promote the progression of ESCC by regulating CCL5. Thus, circMAN1A2 might be a novel diagnostic biomarker of ESCC, and targeting circMAN1A2 using inhibitors could be a potential therapeutic strategy to treat ESCC.
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Affiliation(s)
- Lie Liu
- Department of Research Center, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Meixiang Sang
- Department of Research Center, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China; Department of Tumor Research Institute, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Jian Shi
- Department of Medical Oncology, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Yang Zheng
- Department of Research Center, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Lingjiao Meng
- Department of Research Center, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Lina Gu
- Department of Research Center, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Ziyi Li
- Department of Research Center, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Fei Liu
- Department of Research Center, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Jing Bu
- Department of Research Center, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Xiaoyang Duan
- Department of Medical Oncology, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Feifei Zhao
- Department of Hematology, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Wentian Zhang
- Department of Medical Oncology, Lingshou County Hospital of Integrated Traditional Chinese and Western Medicine, Shijiazhuang, Hebei, 050500, People's Republic of China
| | - Baoen Shan
- Department of Research Center, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China; Department of Tumor Research Institute, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China.
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11
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The Tumorigenic Role of Circular RNA-MicroRNA Axis in Cancer. Int J Mol Sci 2023; 24:ijms24033050. [PMID: 36769372 PMCID: PMC9917898 DOI: 10.3390/ijms24033050] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/30/2023] [Accepted: 02/02/2023] [Indexed: 02/09/2023] Open
Abstract
Circular RNAs (circRNAs) are a class of endogenous RNAs that control gene expression at the transcriptional and post-transcriptional levels. Recent studies have increasingly demonstrated that circRNAs act as novel diagnostic biomarkers and promising therapeutic targets for numerous cancer types by interacting with other non-coding RNAs such as microRNAs (miRNAs). The miRNAs are presented as crucial risk factors and regulatory elements in cancer by regulating the expression of their target genes. Some miRNAs are derived from transposable elements (MDTEs) that can transfer their location to another region of the genome. Genetic interactions between miRNAs and circular RNAs can form complex regulatory networks with various carcinogenic processes that play critical roles in tumorigenesis and cancer progression. This review focuses on the biological regulation of the correlative axis among circular RNAs, miRNAs, and their target genes in various cancer types and suggests the biological importance of MDTEs interacting with oncogenic or tumor-suppressive circRNAs in tumor progression.
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Yang K, Zhang F, Luo B, Qu Z. CAFs-derived small extracellular vesicles circN4BP2L2 promotes proliferation and metastasis of colorectal cancer via miR-664b-3p/HMGB3 pathway. Cancer Biol Ther 2022; 23:404-416. [PMID: 35722996 PMCID: PMC9225373 DOI: 10.1080/15384047.2022.2072164] [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] [Indexed: 11/02/2022] Open
Abstract
Our previous research has demonstrated that colorectal cancer (CRC) progression was promoted by circN4BP2L2. This study aimed to further explore the mechanism of circN4BP2L2 in the development of CRC from the perspective of small extracellular vesicles (sEVs). Cancer-associated fibroblasts cell (CAFs) and normal fibroblasts cell (NFs) were isolated from CRC tissues and adjacent tissues, respectively. The ultra-centrifugation was used for extraction of their related sEVs. Cell proliferation and apoptosis were analyzed using CCK-8 and flow cytometry, respectively. Transwell assay was conducted to measure cell migration. The tube formation ability was assessed by tube formation assay. The target relationships between circN4BP2L2 and miR-664b-3p, and miR-664b-3p and HMGB3 were validated by dual-luciferase reporter detection. The effect of CAFs-derived sEV (CAFs-sEVs) circN4BP2L2 on CRC was further studied in nude mice. CAFs-exo promoted cell proliferation, migration, tube formation ability, and inhibited apoptosis of CRC cells. CAFs-sEV circN4BP2L2 knockdown reversed the above results. CircN4BP2L2 directly targeted miR-664b-3p, and HMGB3 was targeted by miR-664b-3p. Moreover, subcutaneous tumorigenesis and liver metastasis of nude mice with CRC were repressed by CAFs-sEV circN4BP2L2 knockdown. CAFs-sEV circN4BP2L2 knockdown restrained CRC cell proliferation and migration by regulating miR-664b-3p/HMGB3 pathway.
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Affiliation(s)
- Keda Yang
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Fan Zhang
- Department of Gynecology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Baihua Luo
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Zhan Qu
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
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13
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Liu Y, He E, Zhang Y, Liu Y, Wang Y, Chen S, Wu X, Zeng Y, Leng P. WW domain binding protein 2 (WBP2) as an oncogene in breast cancer: mechanisms and therapeutic prospects-a narrative review. Gland Surg 2022; 11:1984-2002. [PMID: 36654949 PMCID: PMC9841001 DOI: 10.21037/gs-22-716] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 12/19/2022] [Indexed: 12/28/2022]
Abstract
Background and Objective WW domain binding protein 2 (WBP2), considered an emerging breast cancer gene, functions as a binding partner for WW domain proteins. The WBP2 gene is involved in mediating the malignant development and clinical drug resistance of breast cancer, but its potential mechanism remains unclear. Therefore, it is necessary to elucidate the mechanism of WBP2 in breast cancer, which will help to provide new methods for clinical diagnosis and treatment of breast cancer. Methods The PubMed database was searched using the terms "WW Domain Binding Protein 2" or "WBP2", "breast cancer" or "breast neoplasms" or "human cancer" from January 1997 through August 2022. Through the screening and evaluation of titles and abstracts, about 120 English articles were included in this study. Key Content and Findings By describing the multiple regulatory functions of WBP2 at the transcriptional, post-transcriptional, and post-translational levels, and summarizing how WBP2 as a key node crosstalks multiple signaling pathways, we reveal the ability of WBP2 to promote breast cancer malignant progression. In different subtypes of breast cancer, the mechanism of WBP2-mediated drug resistance is related to estrogen receptor and epidermal growth factor receptor (EGFR) 2 status, and hormones may be an essential factor in WBP2-mediated drug resistance. In addition, we discuss the application prospects of WBP2 in targeted therapy and immunotherapy and propose therapeutic strategies to overcome drug resistance in breast cancer by jointly targeting WBP2 and its related molecules. This provides a theoretical basis for the innovation of breast cancer targeted drugs. Conclusions WBP2 is a promising target for breast cancer therapy. Nuclear WBP2, as the main functional form of WBP2 after its activation, is a meaningful indicator for the diagnosis and prediction of breast cancer progression.
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Affiliation(s)
- Yan Liu
- Chongqing Key Laboratory of Sichuan-Chongqing Co-construction for Diagnosis and Treatment of Infectious Diseases Integrated Traditional Chinese and Western Medicine, College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Enping He
- The Second Affiliated Hospital of Chengdu Medical College (China National Nuclear Corporation 416 Hospital), Chengdu, China
| | - Yanling Zhang
- Department of Clinical Laboratory, Ya’an People’s Hospital, Ya’an, China
| | - Yitong Liu
- Chongqing Key Laboratory of Sichuan-Chongqing Co-construction for Diagnosis and Treatment of Infectious Diseases Integrated Traditional Chinese and Western Medicine, College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yingshuang Wang
- Chongqing Key Laboratory of Sichuan-Chongqing Co-construction for Diagnosis and Treatment of Infectious Diseases Integrated Traditional Chinese and Western Medicine, College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Siyu Chen
- Chongqing Key Laboratory of Sichuan-Chongqing Co-construction for Diagnosis and Treatment of Infectious Diseases Integrated Traditional Chinese and Western Medicine, College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xinyu Wu
- Chongqing Key Laboratory of Sichuan-Chongqing Co-construction for Diagnosis and Treatment of Infectious Diseases Integrated Traditional Chinese and Western Medicine, College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Youqing Zeng
- Chongqing Key Laboratory of Sichuan-Chongqing Co-construction for Diagnosis and Treatment of Infectious Diseases Integrated Traditional Chinese and Western Medicine, College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ping Leng
- Chongqing Key Laboratory of Sichuan-Chongqing Co-construction for Diagnosis and Treatment of Infectious Diseases Integrated Traditional Chinese and Western Medicine, College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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14
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Ren M, Xing L, Wang W, Bi W, Wu W, Jiang G, Wang W, Liang X, Liu M, Tang S. The Drosha-Independent MicroRNA6778-5p/GSK3 β Axis Mediates the Proliferation of Gastric Cancer Cells. COMPUTATIONAL INTELLIGENCE AND NEUROSCIENCE 2022; 2022:5932512. [PMID: 36210981 PMCID: PMC9546646 DOI: 10.1155/2022/5932512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 09/10/2022] [Indexed: 11/17/2022]
Abstract
Background Gastric cancer (GC) is a primary cause of cancer death around the world. Previous studies have found that Drosha plays a significant role in the development of tumor cells. Soon after, we unexpectedly found that the expression of microRNA6778-5p (miR6778-5p) is unconventionally high in the gastric cancer cells low-expressing Drosha. So, we designed the Drosha interference sequence and recombined it into a lentiviral vector to construct Drosha knockdown lentivirus and transfected the Drosha knockdown lentivirus into gastric cancer cells to establish Drosha knockdown gastric cancer cell lines. We aimed to explore the effect of microRNA6778-5p on the proliferation of gastric cancer cells with Drosha knockdown and its intrinsic mechanism. Methods We designed the Drosha interference sequence and recombined it into a lentiviral vector to construct Drosha knockdown lentivirus and transfected the Drosha knockdown lentivirus into gastric cancer cells to establish Drosha knockdown gastric cancer cell lines. After transfecting miR6778-5p mimics and inhibitor into gastric cancer cell lines with Drosha knockdown, the expression levels of miR6778-5p mimics in Drosha low-expressing gastric cancer cells increased, while miR6778-5p inhibitor decreased the expression levels of miR6778-5p. The Cell Counting Kit-8 (CCK-8) experiment was used to detect the proliferation ability of gastric cancer cells after overexpression or knockdown of miR6778-5p and bioinformatics predicted the relationship between miR6778-5p and glycogen synthase kinase-3β (GSK3β). Results After infection with the Drosha knockdown lentivirus, Drosha's mRNA and protein levels were significantly downregulated in gastric cancer cells. The expression levels of miR6778-5p mimics in Drosha low-expressing gastric cancer cells increased, while miR6778-5p inhibitor decreased the expression levels of miR6778-5p. Overexpression of miR6778-5p significantly enhanced the proliferation ability of Drosha low-expression gastric cancer cells; on the contrary, knocking down miR6778-5p weakened the proliferation ability of Drosha low-expression gastric cancer cells. Bioinformatics predicted that miR6778-5p targeted glycogen synthase kinase-3β (GSK3β) and the mRNA and protein levels of GSK3β decreased significantly after overexpression of miR6778-5p. Conclusion miR6778-5p promotes the proliferation of Drosha low-expressing gastric cancer cells by targeting GSK3β.
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Affiliation(s)
- Mingjun Ren
- Department of Laboratory Medicine, Liuzhou People's Hospital, Liu Zhou 545006, China
- Liuzhou Key Laboratory of Precision Medicine for Viral Diseases, Liu Zhou 545006, China
| | - Li Xing
- Graduate School, Guangxi University of Chinese Medicine, Nanning 530000, China
| | - Wanping Wang
- Graduate School, Guangxi University of Chinese Medicine, Nanning 530000, China
| | - Wanying Bi
- Graduate School, Guangxi University of Chinese Medicine, Nanning 530000, China
| | - Wanjun Wu
- Department of Laboratory Medicine, Liuzhou Traditional Chinese Medicine Hospital, Liu Zhou 545006, China
| | - Gui Jiang
- Department of Laboratory Medicine, Liuzhou Traditional Chinese Medicine Hospital, Liu Zhou 545006, China
| | - Weiji Wang
- Gastrointestinal Surgery, Liuzhou People's Hospital, Liu Zhou 545006, China
| | - Xingdong Liang
- Department of Laboratory Medicine, Liuzhou People's Hospital, Liu Zhou 545006, China
- Liuzhou Key Laboratory of Precision Medicine for Viral Diseases, Liu Zhou 545006, China
| | - Manran Liu
- Laboratory Medical College, Chongqing Medical University, Chongqing 400016, China
| | - Shifu Tang
- Department of Laboratory Medicine, Liuzhou People's Hospital, Liu Zhou 545006, China
- Liuzhou Key Laboratory of Precision Medicine for Viral Diseases, Liu Zhou 545006, China
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15
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Role of circular RNAs in disease progression and diagnosis of cancers: An overview of recent advanced insights. Int J Biol Macromol 2022; 220:973-984. [PMID: 35977596 DOI: 10.1016/j.ijbiomac.2022.08.085] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 07/19/2022] [Accepted: 08/11/2022] [Indexed: 02/07/2023]
Abstract
Tumor microenvironment (TME) is a crucial regulator of tumor progression and cells in the TME release a number of molecules that are responsible for anaplasticity, invasion, metastasis of tumor, establishing stem cell niches, up-regulation and down-regulation of various pathways in cancer cells, interfering with immune surveillance and immune escape. Moreover, they can serve as diagnostic markers, and determine effective therapies. Among them, CircRNAs have gained special attention due to their involvement in mutated pathways in cancers. By functioning as a molecular sponge for miRNAs, binding with proteins, and directing selective splicing. CircRNAs modify the immunological environment of cancers to promote their growth. Besides of critical role in tumor growth, circRNAs are emerging as potential candidates as biomarkers for diagnosis cancer therapy. Also, circRNAs vaccination even offers a novel approach to tumor immunotherapy. Over the recent years, studies are advocating that circRNAs have tissue specific tumor specific expression patterns, which indicates their potential clinical utility. Especially, circRNAs have emerged as potential predictive and prognostic biomarkers. Although, there has been significant progress in deciphering the role of circRNA in cancers, literature lacks comprehensive overview on this topic. Keeping in view of these significant discoveries, this review systematically discusses circRNA and their role in the tumor in different dimensions.
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16
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Liang W, Deng L, Mo C, Chen W, Sha Y, Shi J, Hou X, Zhang Y, Yang M, Ou M. Microarray and bioinformatic analysis reveal the parental genes of m6A modified circRNAs as novel prognostic signatures in colorectal cancer. Front Oncol 2022; 12:939790. [PMID: 35965538 PMCID: PMC9373052 DOI: 10.3389/fonc.2022.939790] [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: 05/19/2022] [Accepted: 07/08/2022] [Indexed: 12/24/2022] Open
Abstract
Background Accumulating evidences have revealed that the abnormal N6-methyladenosine (m6A) modification is closely associated with the occurrence, development, progression and prognosis of cancer. It is noteworthy that m6A modification is widely existed in circRNAs and found its key biological functions in regulating circRNAs metabolism. However, the role of m6A modified circRNAs in colorectal cancer (CRC) remains unknown. To better understand the role of circRNAs in the pathogenesis of CRC, we focus on the relationship between m6A-modified circRNAs and their parental genes. Methods Arraystar m6A-circRNA epitranscriptomic microarray was used to identify differentially m6A modified circRNAs between CRC and the control group. In addition, TCGA-COAD and GSE106582 cohort were used to identify differentially expressed mRNAs. In this study, we screened the parental genes for which both circRNAs and mRNAs were down-regulated further to analyze, including gene expression, survival prognosis, enrichment analysis. Additionally, Western Blotting was used to further validate the role of the parental gene in CRC. Results We found that 1405 significantly downregulated circRNAs in CRC by our microarray data. Moreover, we obtained 113 parental genes for which both circRNAs and mRNAs were down-regulated to analyze the relationship with the prognosis of CRC based on TCGA-COAD cohort. And we identified nine potential prognostic genes, including ABCD3, ABHD6, GAB1, MIER1, MYOCD, PDE8A, RPS6KA5, TPM1 and WDR78. And low expression of these genes was associated with poor survival prognosis of the patients with CRC. In addition, we found that TPM1 is downregulated in CRC by western blotting experiment. And the calcium-signaling pathway may involve the process of the CRC progression. Conclusions We identified nine potential prognostic genes, after analyzed the relationship between the parental genes of m6A modified circRNAs and the progression of CRC. Above all, our study further validated TPM1 can serve as a potentail signature for CRC patients.
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Affiliation(s)
- Wenken Liang
- Central Laboratory, Guangxi Health Commission Key Laboratory of Glucose and Lipid Metabolism Disorders, The Second Affiliated Hospital of Guilin Medical University, Guilin, China
- College of Life Science, Guangxi Normal University, Guilin, China
| | - Liyuan Deng
- Department of Hematology, The Second Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Chune Mo
- Central Laboratory, Guangxi Health Commission Key Laboratory of Glucose and Lipid Metabolism Disorders, The Second Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Wei Chen
- Gastrointestinal Surgery, The Second Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Yu Sha
- Central Laboratory, Guangxi Health Commission Key Laboratory of Glucose and Lipid Metabolism Disorders, The Second Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Jianling Shi
- Central Laboratory, Guangxi Health Commission Key Laboratory of Glucose and Lipid Metabolism Disorders, The Second Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Xianliang Hou
- Central Laboratory, Guangxi Health Commission Key Laboratory of Glucose and Lipid Metabolism Disorders, The Second Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Yuping Zhang
- Department of general medicine, Guilin Medical University, Guilin, China
| | - Min Yang
- Department of Rheumatology and Immunology, The Affiliated Hospital of Guilin Medical University, Guilin, China
- *Correspondence: Minglin Ou, ; ; Min Yang,
| | - Minglin Ou
- Central Laboratory, Guangxi Health Commission Key Laboratory of Glucose and Lipid Metabolism Disorders, The Second Affiliated Hospital of Guilin Medical University, Guilin, China
- *Correspondence: Minglin Ou, ; ; Min Yang,
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17
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Gu J, Su C, Huang F, Zhao Y, Li J. Past, Present and Future: The Relationship Between Circular RNA and Immunity. Front Immunol 2022; 13:894707. [PMID: 35693804 PMCID: PMC9174805 DOI: 10.3389/fimmu.2022.894707] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 04/28/2022] [Indexed: 12/21/2022] Open
Abstract
The immune system has evolved since the birth of humans. However, immune-related diseases have not yet been overcome due to the lack of expected indicators and targeting specificity of current medical technology, subjecting patients to very uncomfortable physical and mental experiences and high medical costs. Therefore, the requirements for treatments with higher specificity and indicative ability are raised. Fortunately, the discovery of and continuous research investigating circular RNAs (circRNAs) represent a promising method among numerous methods. Although circRNAs wear regarded as metabolic wastes when discovered, as a type of noncoding RNA (ncRNA) with a ring structure and wide distribution range in the human body, circRNAs shine brilliantly in medical research by virtue of their special nature and structure-determined functions, such as high stability, wide distribution, high detection sensitivity, acceptable reproducibility and individual differences. Based on research investigating the role of circRNAs in immunity, we systematically discuss the hotspots of the roles of circRNAs in immune-related diseases, including expression profile analyses, potential biomarker research, ncRNA axis/network construction, impacts on phenotypes, therapeutic target seeking, maintenance of nucleic acid stability and protein binding research. In addition, we summarize the current situation of and problems associated with circRNAs in immune research, highlight the applications and prospects of circRNAs in the treatment of immune-related diseases, and provide new insight into future directions and new strategies for laboratory research and clinical applications.
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Affiliation(s)
- Junjie Gu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Chongying Su
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Fei Huang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuwei Zhao
- Chengdu Blood Center, Blood Research Laboratory, Chengdu, China
- *Correspondence: Jing Li, ; Yuwei Zhao,
| | - Jing Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- *Correspondence: Jing Li, ; Yuwei Zhao,
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18
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Wu X, Wu J, Wang L, Yang W, Wang B, Yang H. CircRNAs in Malignant Tumor Radiation: The New Frontier as Radiotherapy Biomarkers. Front Oncol 2022; 12:854678. [PMID: 35372031 PMCID: PMC8966018 DOI: 10.3389/fonc.2022.854678] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 02/18/2022] [Indexed: 12/14/2022] Open
Abstract
World Health Organization (WHO) data show that of the top 20 factors that threaten human life and health, cancer is at the forefront, and the therapeutic approaches for cancer consist of surgery, radiotherapy, chemotherapy and immunotherapy. For most highly metastatic and recurrent cancer, radiation therapy is an essential modality to mitigate tumor burden and improve patient survival. Despite the great accomplishments that have been made in clinical therapy, an inevitable challenge in effective treatment is radioresistance, the mechanisms of which have not yet been completely elucidated. In addition, radiosensitization methods based on molecular mechanisms and targets, and clinical applications are still inadequate. Evidence indicates that circular RNAs (circRNAs) are important components in altering tumor progression, and in influencing resistance and susceptibility to radiotherapy. This review summarizes the reasons for tumor radiotherapy resistance induced by circRNAs, and clarifies the molecular mechanisms and targets of action. Moreover, we determine the potential value of circRNAs as clinical indicators in radiotherapy, providing a theoretical basis for circRNAs-based strategies for cancer radiotherapy.
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Affiliation(s)
- Xixi Wu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Junying Wu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Department of Clinical Laboratory, The Children's Hospital of Soochow University, Suzhou, China
| | - Lingxia Wang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Wei Yang
- State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, China
| | - Bo Wang
- Department of Oncology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Huan Yang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Soochow University, Suzhou, China.,State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, China
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Identification and Characterization of the Roles of circCASP9 in Gastric Cancer Based on a circRNA-miRNA-mRNA Regulatory Network. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:9416825. [PMID: 35320976 PMCID: PMC8938058 DOI: 10.1155/2022/9416825] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 01/20/2022] [Indexed: 12/21/2022]
Abstract
Accumulating evidence demonstrates that circular RNAs (circRNAs) have substantial effects on gastric cancer (GC) tumorigenesis and development. In this study, we performed a screen and identified two differentially expressed circRNAs (circCASP9 and circDLG5) from our circRNA microarray. We validated the expression of circCASP9 and circDLG5 in GC tissues and their normal counterparts by using qRT-PCR. Only circCASP9 was revealed to be downregulated in tumor tissues compared with adjacent normal tissues. Functionally, circCASP9 significantly inhibited the proliferation, migration, and invasion of GC cells both in vitro and in vivo. A competing endogenous RNA (ceRNA) network was constructed for the identification of candidate target genes of circCASP9. circCASP9, two miRNAs, and 55 mRNAs were selected for construction of the ceRNA network. We confirmed that circCASP9 can function as a sponge of miR-589-5p to regulate KANK1 expression, thereby controlling GC progression. Accordingly, we identified that the novel circRNA circCASP9 was differentially expressed between GC tissues and their normal counterparts. We also showed that circCASP9 can regulate the growth and metastasis of GC via the miR-589-5p/KANK1 axis. The circCASP9/miR-589-5p/KANK1 axis might provide crucial insights for investigating the occurrence and development of GC.
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Cao X, Meng X, Fu P, Wu L, Yang Z, Chen H. circATP2A2 promotes osteosarcoma progression by upregulating MYH9. Open Med (Wars) 2021; 16:1749-1761. [PMID: 34901459 PMCID: PMC8630393 DOI: 10.1515/med-2021-0370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 09/06/2021] [Accepted: 09/13/2021] [Indexed: 01/16/2023] Open
Abstract
Osteosarcoma (OS) is a highly metastatic primary malignant tumor. CircRNA hsa_circ_0028173 (circATP2A2) has been uncovered to be related to the advancement of OS. However, the biological role of circATP2A2 in OS has not been validated. circATP2A2 and MYH9 were upregulated while miR-335-5p was downregulated in OS. OS patients with high circATP2A2 expression displayed a shorter overall survival and the area under curve of circATP2A2 was 0.77, manifesting that circATP2A2 might be a diagnostic and prognostic biomarker. circATP2A2 silencing repressed OS cell proliferation and glycolysis in vivo and constrained OS cell proliferation, glycolysis, migration, and invasion in vitro. circATP2A2 regulated MYH9 expression through sponging miR-335-5p. MiR-335-5p inhibitor reversed the repressive effect of circATP2A2 knockdown on OS cell malignancy and glycolysis. MYH9 overexpression overturned miR-335-5p upregulation-mediated OS cell malignancy and glycolysis. circATP2A2 accelerated OS cell malignancy and glycolysis through upregulating MYH9 via sponging miR-335-5p, offering a promising target for OS treatment.
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Affiliation(s)
- Xin Cao
- Department of Trauma and Orthopaedics, Shengli Oilfield Central Hospital, Dongying, Shandong, China
| | - Xianfeng Meng
- Department of Trauma and Orthopaedics, Shengli Oilfield Central Hospital, Dongying, Shandong, China
| | - Peng Fu
- Department of Trauma and Orthopaedics, Shengli Oilfield Central Hospital, Dongying, Shandong, China
| | - Lin Wu
- Department of Trauma and Orthopaedics, Shengli Oilfield Central Hospital, Dongying, Shandong, China
| | - Zhen Yang
- Department of Trauma and Orthopaedics, Shengli Oilfield Central Hospital, Dongying, Shandong, China
| | - Huijin Chen
- Department of Clinical Laboratory, Shengli Oilfield Central Hospital, No. 31, Jinan Road, Dongying, 257000, Shandong, China
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21
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Hu D, Shao W, Liu L, Wang Y, Yuan S, Liu Z, Liu J, Zhang J. Intricate crosstalk between MYB and noncoding RNAs in cancer. Cancer Cell Int 2021; 21:653. [PMID: 34876130 PMCID: PMC8650324 DOI: 10.1186/s12935-021-02362-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 11/24/2021] [Indexed: 11/10/2022] Open
Abstract
MYB is often overexpressed in malignant tumors and plays a carcinogenic role in the initiation and development of cancer. Deletion of the MYB regulatory C-terminal domain may be a driving mutation leading to tumorigenesis, therefore, different tumor mechanisms produce similar MYB proteins. As MYB is a transcription factor, priority has been given to identifying the genes that it regulates. All previous attention has been focused on protein-coding genes. However, an increasing number of studies have suggested that MYB can affect the complexity of cancer progression by regulating tumor-associated noncoding RNAs (ncRNAs), such as microRNAs, long-non-coding RNAs and circular RNAs. ncRNAs can regulate the expression of numerous downstream genes at the transcription, RNA processing and translation levels, thereby having various biological functions. Additionally, ncRNAs play important roles in regulating MYB expression. This review focuses on the intricate crosstalk between oncogenic MYB and ncRNAs, which play a pivotal role in tumorigenesis, including proliferation, apoptosis, angiogenesis, metastasis, senescence and drug resistance. In addition, we discuss therapeutic strategies for crosstalk between MYB and ncRNAs to prevent the occurrence and development of cancer.
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Affiliation(s)
- Dingyu Hu
- The First Affiliated Hospital, Department of Rheumatology, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Wenjun Shao
- The First Affiliated Hospital, Department of Rheumatology, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Li Liu
- The First Affiliated Hospital, Department of Rheumatology, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Yanyan Wang
- The First Affiliated Hospital, Department of Rheumatology, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Shunling Yuan
- The First Affiliated Hospital, Department of Rheumatology, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Zhaoping Liu
- The First Affiliated Hospital, Department of Rheumatology, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Jing Liu
- Hunan Province Key Laboratory of Basic and Applied Hematology, Molecular Biology Research Center & Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, 410078, Hunan, China.
| | - Ji Zhang
- The First Affiliated Hospital, Department of Rheumatology, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China. .,Department of Clinical Laboratory, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518033, Guangdong, China.
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22
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Lv J, Zhou Z, Wang J, Yang X, Yu H, Han J, Feng D, Yuan B, Wu Q, Li P, Lu Q, Yang H. CircFAM114A2 Promotes Cisplatin Sensitivity via miR-222-3p/P27 and miR-146a-5p/P21 Cascades in Urothelial Carcinoma. Front Oncol 2021; 11:659166. [PMID: 34722233 PMCID: PMC8551855 DOI: 10.3389/fonc.2021.659166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 09/20/2021] [Indexed: 12/29/2022] Open
Abstract
INTRODUCTION Circular RNAs (circRNAs) are non-coding RNAs that have the structure of a covalently closed loop. Increasing data have proven that circRNAs can influence the progression and chemotherapy sensitivity of tumors. Therefore, the underlying function and mechanisms of more circRNAs in progression and chemotherapy resistance are important. METHODS We conducted RNA sequencing on five pairs of urothelial carcinoma samples and screened for circRNAs. CircFAM114A2 was found to be low expressed in urothelial carcinoma. The functions of circFAM114A2 in urothelial carcinoma were explored by cell cycle assay, IC50 determination assay, cell proliferation assay, apoptosis assay, and tumorigenesis assay. RESULTS We discovered that the levels of circFAM114A2 were decreased in urothelial carcinoma cell lines and tissues. According to follow-up data, urothelial carcinoma patients with higher circFAM114A2 expression had better survival. Importantly, the levels of circFAM114A2 were associated with the histological grade of urothelial carcinoma. CircFAM114A2 could inhibit cell proliferation and block more urothelial carcinoma cells in the G1 phase and then increase the sensitivity of urothelial carcinoma to cisplatin chemotherapy. Mechanistically, circFAM114A2 directly sponged miR-222-3p/miR-146a-5p and subsequently influenced the expressions of the downstream target genes P27/P21, which, in turn, inhibited the progression of urothelial carcinoma and increased the sensitivity of cancer cells to cisplatin chemotherapy. CONCLUSION CircFAM114A2 could inhibit progression and promote cisplatin sensitivity in urothelial carcinoma through novel circFAM114A2/miR-222-3p/P27 and circFAM114A2/miR-146a-5p/P21 pathways. CircFAM1142 has therefore great potential as a prognostic biomarker and therapeutic target for urothelial carcinoma.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Qiang Lu
- Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Haiwei Yang
- Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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23
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Li X, Wang J, Long H, Lin W, Wang H, Chen Y, Yuan Q, Li X. circCDYL2, Overexpressed in Highly Migratory Colorectal Cancer Cells, Promotes Migration by Binding to Ezrin. Front Oncol 2021; 11:716073. [PMID: 34485151 PMCID: PMC8416158 DOI: 10.3389/fonc.2021.716073] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/26/2021] [Indexed: 11/28/2022] Open
Abstract
Background Colorectal cancer (CRC) is one of the most common malignancies with high mortality worldwide, particularly due to metastasis. However, there are no clinically available strategies for treating CRC metastasis. Exploring the mechanisms underlying CRC metastasis is the key to improve the treatment of CRC with metastasis. Methods In this study, we generated the highly migratory CRC cell subline H-RKO using a repeated transwell migration assay to identify circRNAs involved in CRC migration by high-throughput RNA sequencing. Upregulated circRNAs were validated by RT-qPCR to identify the most elevated circRNA. The expression of this circRNA (circCDYL2) was evaluated in 40 pairs of CRC tissues and four CRC cell lines by RT-qPCR. Transwell migration and wound healing assays were performed to verify the function of circCDYL2 in cell migration. The cellular distribution of circCDYL2 was confirmed using PCR. RNA pulldown and RNA immunoprecipitation were used to confirm the interaction between circCDYL2 and Ezrin. Western blotting, immunohistochemistry, and rescue experiments were used to determine the role of circCDYL2 in regulating Ezrin protein expression and AKT phosphorylation. Results Among the candidate circRNAs, circCDYL2 was the highest overexpressed circRNA in H-RKO compared to parental N-RKO cells. Furthermore, circCDYL2 expression was elevated in CRC tissues and cell lines. Gain- and loss-of-function assays indicated that circCDYL2 enhanced the migration of CRC cells. circCDYL2 was located in the cytoplasm of CRC cells and interacted with Ezrin to upregulate its protein levels, resulting in AKT phosphorylation. Ezrin knockdown abrogated the CRC cell migration induced by circCDYL2 overexpression. Conclusions Our study demonstrated for the first time that circCDYL2 promotes CRC migration by binding Ezrin and activating the AKT pathway. CircCDYL2 represents a potential therapeutic target for preventing CRC metastasis.
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Affiliation(s)
- Xiaomin Li
- Guangdong Provincial Key Laboratory of Molecular Tumor Pathology, Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Jianjun Wang
- Department of Histology and Embryology, Wannan Medical College, Wuhu, China
| | - Huaicheng Long
- Guangdong Provincial Key Laboratory of Molecular Tumor Pathology, Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Weihao Lin
- Guangdong Provincial Key Laboratory of Molecular Tumor Pathology, Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Haowei Wang
- Guangdong Provincial Key Laboratory of Molecular Tumor Pathology, Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Yujia Chen
- Guangdong Provincial Key Laboratory of Molecular Tumor Pathology, Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Qinzi Yuan
- Guangdong Provincial Key Laboratory of Molecular Tumor Pathology, Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Xuenong Li
- Guangdong Provincial Key Laboratory of Molecular Tumor Pathology, Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
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24
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Gong L, Zhou X, Sun J. Circular RNAs Interaction with MiRNAs: Emerging Roles in Breast Cancer. Int J Med Sci 2021; 18:3182-3196. [PMID: 34400888 PMCID: PMC8364445 DOI: 10.7150/ijms.62219] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 06/28/2021] [Indexed: 12/24/2022] Open
Abstract
Despite significant advances in cancer therapy strategies, breast cancer is one of the most common and lethal malignancies worldwide. Characterization of a new class of RNAs using next-generation sequencing opened new doors toward uncovering etiopathogenesis mechanisms of breast cancer as well as prognostic and diagnostic biomarkers. Circular RNAs (circRNAs) are a novel class of RNA with covalently closed and highly stable structures generated primarily from the back-splicing of precursor mRNAs. Although circRNAs exert their function through various mechanisms, acting as a sponge for miRNAs is their primary mechanism of function. Furthermore, growing evidence has shown that aberrant expression of circRNAs is involved in the various hallmarks of cancers. This paper reviews the biogenesis, characteristics, and mechanism of functions of circRNAs and their deregulation in various cancers. Finally, we focused on the circRNAs roles as a sponge for miRNAs in the development, metastasis, angiogenesis, drug resistance, apoptosis, and immune responses of breast cancer.
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Affiliation(s)
- Liu Gong
- Department of Medical Oncology, Hangzhou Xiasha Hospital, Hangzhou, Zhejiang Province, China
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25
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Frey L, Klümper N, Schmidt D, Kristiansen G, Toma M, Ritter M, Alajati A, Ellinger J. CircEHD2, CircNETO2 and CircEGLN3 as Diagnostic and Prognostic Biomarkers for Patients with Renal Cell Carcinoma. Cancers (Basel) 2021; 13:cancers13092177. [PMID: 33946584 PMCID: PMC8124893 DOI: 10.3390/cancers13092177] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 04/20/2021] [Accepted: 04/26/2021] [Indexed: 02/07/2023] Open
Abstract
Simple Summary Circular RNA (circRNA) plays an important role in cancer, but little is known about its role in clear cell renal cell carcinoma (ccRCC). The study was designed to analyze the role of circRNAs in ccRCC. We show that circEHD2, circENGLN3, and circNETO2 are upregulated in ccRCC compared with non-malignant renal tissue. Increased circEHD2 levels were significant and independent predictors of progression-free and cancer-specific survival of ccRCC patients. Thus, the analysis of circRNAs may be of diagnostic and prognostic relevance in patients with ccRCC. Abstract Background: Circular RNA (circRNA) plays an important role in the carcinogenesis of various tumors. It is assumed that circRNAs have a high tissue and tumor specificity, thus they are discussed as cancer biomarkers. The knowledge about circRNAs in clear cell renal carcinoma (ccRCC) is limited so far, and thus we studied the expression profile of seven circRNAs (circCOL5A1, circEHD2, circEDEM2, circEGNL3, circNETO2, circSCARB1, circSOD2) in a cohort of ccRCC patients. Methods: Fresh-frozen normal and cancerous tissues were prospectively collected from patients with ccRCC undergoing partial/radical nephrectomy. Total RNA was isolated from 121 ccRCC and 91 normal renal tissues, and the circRNA expression profile was determined using quantitative real-time PCR. Results: circEHD2, circENGLN3, and circNETO2 were upregulated in ccRCC compared with non-malignant renal tissue. circENGLN3 expression was highly discriminative between normal and cancerous tissue. None of the circRNAs was correlated with clinicopathological parameters. High circEHD2 and low circNETO2 levels were an independent predictor of a shortened progression-free survival, cancer-specific survival, and overall survival in patients with ccRCC undergoing nephrectomy. Conclusions: The analysis of circRNAs may provide diagnostic and prognostic information. Thus, circRNAs could help to optimize the individual treatment and ultimately improve ccRCC patients’ survival.
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Affiliation(s)
- Lisa Frey
- Department of Urology, University Hospital Bonn, 53127 Bonn, Germany; (L.F.); (N.K.); (D.S.); (M.R.); (A.A.)
| | - Niklas Klümper
- Department of Urology, University Hospital Bonn, 53127 Bonn, Germany; (L.F.); (N.K.); (D.S.); (M.R.); (A.A.)
| | - Doris Schmidt
- Department of Urology, University Hospital Bonn, 53127 Bonn, Germany; (L.F.); (N.K.); (D.S.); (M.R.); (A.A.)
| | - Glen Kristiansen
- Institute of Pathology, University Hospital Bonn, 53127 Bonn, Germany; (G.K.); (M.T.)
| | - Marieta Toma
- Institute of Pathology, University Hospital Bonn, 53127 Bonn, Germany; (G.K.); (M.T.)
| | - Manuel Ritter
- Department of Urology, University Hospital Bonn, 53127 Bonn, Germany; (L.F.); (N.K.); (D.S.); (M.R.); (A.A.)
| | - Abdullah Alajati
- Department of Urology, University Hospital Bonn, 53127 Bonn, Germany; (L.F.); (N.K.); (D.S.); (M.R.); (A.A.)
| | - Jörg Ellinger
- Department of Urology, University Hospital Bonn, 53127 Bonn, Germany; (L.F.); (N.K.); (D.S.); (M.R.); (A.A.)
- Correspondence: ; Tel.: +49 228-287-14180; Fax: +49-228-287-14185
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