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Liu Y, Xin Y, Shang X, Tian Z, Xue G. CircSEMA6A upregulates PRRG4 by targeting MiR-520h and recruiting ELAVL1 to affect cell invasion and migration in papillary thyroid carcinoma. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2024; 68:e210541. [PMID: 38394156 PMCID: PMC10948040 DOI: 10.20945/2359-4292-2021-0541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 09/07/2022] [Indexed: 02/25/2024]
Abstract
Objective As the most prevalent type of thyroid malignancy, papillary thyroid carcinoma (PTC) accounts for over 80% of all thyroid cancers. Circular RNAs (circRNAs) have been found to regulate multiple cancers, including PTC. Materials and methods Quantitative real-time polymerase chain reaction (qRT-PCR) and western blotting were used to analyse RNA and protein levels. Fluorescence in situ hybridization (FISH) was used to detect the distribution of the target genes. Functional experiments and animal experiments were implemented to analyse the biological functions of target genes in vitro and in vivo. Luciferase reporter, RNA pulldown, RNA binding protein immunoprecipitation (RIP) and mRNA stability assays were used to probe the underlying mechanisms. Results CircSEMA6Awas found to be upregulated in PTC tissues and cells, and its circular structure was verified. CircSEMA6A promotes PTC cell migration and invasion. Moreover, circSEMA6A functions as a competing endogenous RNA (ceRNA) to upregulate proline rich and Gla domain 4 (PRRG4) expression by sponging microRNA-520h (miR-520h). CircSEMA6A recruits ELAV1 to stabilize PRRG4 mRNA and drives PTC progression via PRRG4. Conclusion CircSEMA6A upregulates PRRG4 by targeting miR-520h and recruiting ELAVL1 to affect the invasion and migration of PTC cells, offering insight into the molecular mechanisms of PTC.
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Affiliation(s)
- Yachao Liu
- Department of Otolaryngol Head & Neck Surg, the First Affiliated Hospital of Hebei North University, Zhangjiakou City, Hebei, Peoples R China,
| | - Yunchao Xin
- Department of Otolaryngol Head & Neck Surg, the First Affiliated Hospital of Hebei North University, Zhangjiakou City, Hebei, Peoples R China
| | - Xiaoling Shang
- Department of Otolaryngol Head & Neck Surg, the First Affiliated Hospital of Hebei North University, Zhangjiakou City, Hebei, Peoples R China
| | - Zedong Tian
- Department of Otolaryngol Head & Neck Surg, the First Affiliated Hospital of Hebei North University, Zhangjiakou City, Hebei, Peoples R China
| | - Gang Xue
- Department of Otolaryngol Head & Neck Surg, the First Affiliated Hospital of Hebei North University, Zhangjiakou City, Hebei, Peoples R China
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2
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Yu F, Deng X, Zhong Y, Guo B, Zhang X, Wu B. Hypoxic papillary thyroid carcinoma cells-secreted exosomes deliver miR-221-3p to normoxic tumor cells to elicit a pro-tumoral effect by regulating the ZFAND5. Exp Cell Res 2023; 431:113716. [PMID: 37488006 DOI: 10.1016/j.yexcr.2023.113716] [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: 03/27/2023] [Revised: 07/04/2023] [Accepted: 07/07/2023] [Indexed: 07/26/2023]
Abstract
Papillary thyroid cancer (PTC) has seen a worldwide expansion in incidence in the past three decades. Tumor-derived exosomes have been associated with the metastasis of cancer cells and are present within the local hypoxic tumor microenvironment, where they mediate intercellular communication by transferring molecules including microRNAs (miRNAs) between cells. Although miRNAs have been shown to serve as non-invasive biomarkers for cancer diagnosis, the role of hypoxia-induced tumor-derived exosomes in PTC progression remains unclear. Herein, we investigated the differentially expressed miRNA expression profiles from GEO datasets (GSE191117 and GSE151180) by using the DESeq package in R and identified a novel role for miR-221-3p as an oncogene in PTC development. In vivo and in vitro loss and gain assays were used to clarify the mechanism of hypoxic PTC cells derived exosomal-miR-221-3p in PTC. miR-221-3p was upregulated in human PTC plasma exosomes, tissues and cell lines. We found that hypoxic PTC cells derived exosomal-miR-221-3p promoted normoxic PTC cells proliferation, migration, invasion and epithelial-mesenchymal transition (EMT) in vitro, while inhibition of miR-221-3p limited PTC tumor growth in our PTC xenograft model in nude mice. We finally identified ZFAND5, to be a miR-221-3p target. Mechanistically, hypoxic PTC cell lines-derived exosomes carrying miR-221-3p promoted PTC tumorigenesis by regulating ZFAND5. Our findings further the understanding of the underlying mechanisms associated with PTC progression and identify exosomal-miR-221-3p as a potential biomarker for the diagnosis and prognosis of PTC patients. Our study also suggests that miR-221-3p inhibitors could be a potential treatment strategy for PTC.
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Affiliation(s)
- Fan Yu
- Department of General Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai, 200233, China
| | - Xianzhao Deng
- Department of General Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai, 200233, China
| | - Yong Zhong
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Bomin Guo
- Department of General Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai, 200233, China
| | - Xiaoping Zhang
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China.
| | - Bo Wu
- Department of General Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai, 200233, China.
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3
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Wang W, Zheng Z, Lei J. CTC, ctDNA, and Exosome in Thyroid Cancers: A Review. Int J Mol Sci 2023; 24:13767. [PMID: 37762070 PMCID: PMC10530859 DOI: 10.3390/ijms241813767] [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: 06/11/2023] [Revised: 08/29/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
Thyroid cancer has become more common in recent years all around the world. Many issues still need to be urgently addressed in the diagnosis, treatment, and prognosis of thyroid cancer. Liquid biopsy (mainly circulating tumor DNA (ctDNA), circulating tumor cells (CTCs), and circulating exosomes) may provide a novel and ideal approach to solve these issues, allows us to assess the features of diseases more comprehensively, and has a function in a variety of malignancies. Recently, liquid biopsy has been shown to be critical in thyroid cancer diagnosis, treatment, and prognosis in numerous previous studies. In this review, by testing CTCs, ctDNA, and exosomes, we focus on the possible clinical role of liquid biopsy in thyroid cancer, including diagnostic and prognostic biomarkers and response to therapy. We briefly review how liquid biopsy components have progressed in thyroid cancer by consulting the existing public information. We also discuss the clinical potential of liquid biopsy in thyroid cancer and provide a reference for liquid biopsy research. Liquid biopsy has the potential to be a useful tool in the early detection, monitoring, or prediction of response to therapies and prognosis in thyroid cancer, with promising clinical applications.
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Affiliation(s)
- Wenwen Wang
- Division of Thyroid Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Zhiyao Zheng
- Division of Thyroid Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
- Department of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Jianyong Lei
- Division of Thyroid Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
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4
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Tian T, Zhang Z, Chen T. PSG7 indicates that age at diagnosis is associated with papillary thyroid carcinoma: A study based on the cancer genome atlas data. Front Genet 2022; 13:952981. [PMID: 36276966 PMCID: PMC9579346 DOI: 10.3389/fgene.2022.952981] [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: 05/25/2022] [Accepted: 09/20/2022] [Indexed: 11/13/2022] Open
Abstract
The age of the patients at diagnosis (age at diagnosis) is a self-contained element of danger for the prognosis of patients with papillary thyroid carcinoma (PTC), which has been well recognized and continuously adopted by the international cancer staging system. However, few studies have investigated its intrinsic mechanisms. In this study, we aim to comprehensively reveal the age-related pathogenesis of PTC and identify potential prognostic biomarkers. We divided the samples into two groups, young and elderly, to filter differentially expressed genes in The Cancer Genome Atlas (TCGA), with an age of 55 years serving as a cutoff. Moreover, we combined univariate, LASSO, and multivariate Cox regression analyses to construct age-related signatures for predicting progression-free survival. Additionally, functional enrichment analysis, immune infiltration analysis, differential expression analysis, clinicopathological correlation analysis, and drug sensitivity analysis were performed in different risk subgroups and expression subgroups. We screened 88 upregulated genes and 58 downregulated genes. Both the LASSO regression model that is validated in TCGA and the model of six age-related prognostic genes (IGF2BP1, GPRC6A, IL37, CRCT1, SEMG1, and PSG7) can be used to evaluate the progression-free survival of PTC patients. The GO, KEGG, and GSEA analyses revealed that each key gene was closely associated with PTC development. Furthermore, CD8+ T cells decreased significantly, while regulatory T cells increased dramatically in the high-risk and PSG7 high expression groups. PSG7 was remarkably correlated with clinicopathological parameters (pathologic stage, T stage, and N stage) of PTC patients, and PSG7 expression was elevated in tumor samples from both TCGA and the Gene Expression Omnibus and was strongly associated with progressive stage and poor prognosis. Our results provide an innovative understanding of the age-related molecular mechanisms of PTC development. PSG7 was identified to exert a critical role in PTC progression and may serve as a promising strategy for predicting the prognosis of PTC.
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Affiliation(s)
- Tianjie Tian
- Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
- Department of Otorhinolaryngology Head and Neck Surgery, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
| | - Zixiong Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
| | - Ting Chen
- Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
- *Correspondence: Ting Chen,
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5
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Yan J, Shao Y, Lu H, Ye Q, Ye G, Guo J. Hsa_circ_0001020 Serves as a Potential Biomarker for Gastric Cancer Screening and Prognosis. Dig Dis Sci 2022; 67:3753-3762. [PMID: 34424459 DOI: 10.1007/s10620-021-07211-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 08/02/2021] [Indexed: 12/24/2022]
Abstract
Circular RNAs (circRNAs) are an intriguing class of RNAs with covalently closed-loop structures. With characteristics of high stability and disease-specific expression, circRNAs are emerging as ideal targets for cancer therapy. However, the screening utility and clinical value of circRNAs in gastric cancer (GC) remain largely elusive. We detected levels of hsa_circ_0001020 in cell lines and tissue and plasma samples and investigated its clinicopathological correlations. Kaplan-Meier survival curves and regression analyses were used to analyze its prognostic value. Receiver operating characteristic curves and biomarker combinations were examined to verify its screening value. Bioinformatics analysis was also performed to predict potential biological functions. Our tests found that hsa_circ_0001020 was significantly upregulated in GC cell lines, GC tissue samples, and even in plasma. High hsa_circ_0001020 expression levels in GC tissues were significantly associated with distal metastasis and blood carbohydrate antigen 19-9 (CA19-9). GC patients with high hsa_circ_0001020 had a lower overall survival and disease-free survival time than the low levels. Regression analysis suggested that the level of hsa_circ_0001020 expression was an independent prognostic factor for survival time. As a biomarker for GC, hsa_circ_0001020 showed a superior AUC, sensitivity, and specificity than carcinoembryonic antigen and CA19-9, and was suitable for combination with clinical tumor biomarkers. Bioinformatics analysis provided valuable clues for the possible oncogenic pathways of GC, such as the FoxO and p53 signaling pathways. In conclusion, our study found that hsa_circ_0001020 in GC could be a reliable biomarker to screen for GC and predict prognosis.
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Affiliation(s)
- 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
| | - Yongfu Shao
- Department of Gastroenterology, The Affiliated Hospital of Medical School of Ningbo University, Ningbo, 315020, China
| | - Haoxuan Lu
- Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, 315211, China
| | - Qihua Ye
- Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, 315211, China
| | - Guoliang Ye
- 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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6
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Ma Y, Yang D, Guo P. Circ_0000144 acts as a miR-1178-3p decoy to promote cell malignancy and angiogenesis by increasing YWHAH expression in papillary thyroid cancer. J Otolaryngol Head Neck Surg 2022; 51:28. [PMID: 35902926 PMCID: PMC9330660 DOI: 10.1186/s40463-022-00574-w] [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: 11/09/2021] [Accepted: 03/31/2022] [Indexed: 12/12/2022] Open
Abstract
Papillary thyroid cancer (PTC) is the most common subtype of thyroid cancer. Circular RNA hsa_circ_0000144 (circ_0000144) is related to the progression of thyroid cancer. However, the mechanism by which circ_0000144 accelerates PTC progression is still unclear. Circ_0000144 and YWHAH were upregulated in PTC tissues and cells, while miR-1178-3p had an opposite result. Circ_0000144 silencing constrained PTC cell growth in vitro and in vivo and induced apoptosis and repressed migration, invasion, and angiogenesis of PTC cells in vitro. Circ_0000144 acted as a molecular sponge for miR-1178-3p, which targeted YWHAH. MiR-1178-3p inhibitor reversed circ_0000144 silencing-mediated influence on PTC cell malignancy and angiogenesis. Furthermore, YWHAH overexpression overturned miR-1178-3p mimic-mediated influence on malignant behaviors and angiogenesis of PTC cells. Notably, circ_0000144 regulated YWHAH expression by adsorbing miR-1178-3p. Circ_0000144 promoted cell malignancy and angiogenesis by regulating the miR-1178-3p/YWHAH axis in PTC, offering a novel mechanism for the malignancy and angiogenesis of PTC cells. Inhibition of circ_0000144 repressed malignant behaviors and angiogenesis of PTC cells in vitro. Knockdown of circ_0000144 constrained PTC cell proliferation in vivo. Circ_0000144 acted as a miR-1178-3p sponge. YWHAH acted as a downstream target for miR-1178-3p.
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Affiliation(s)
- Yinli Ma
- Department of Inspection, The First People's Hospital of Fuyang District, No.429, Beihuan Road, Fuyang District, Hangzhou, 311400, Zhejiang, China.
| | - Dan Yang
- Department of Inspection, The First People's Hospital of Fuyang District, No.429, Beihuan Road, Fuyang District, Hangzhou, 311400, Zhejiang, China
| | - Pingan Guo
- Department of Inspection, The First People's Hospital of Fuyang District, No.429, Beihuan Road, Fuyang District, Hangzhou, 311400, Zhejiang, China
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7
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Zhu C, Feng Z, Hong F, Sun H, Wang Z, Zhao Z, Zhang F. The predictive value of circular RNAs in the diagnosis, prognosis and clinicopathological features of thyroid cancer: A systematic review and meta-analysis. Pathol Res Pract 2022; 236:153871. [DOI: 10.1016/j.prp.2022.153871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 03/16/2022] [Accepted: 03/30/2022] [Indexed: 10/18/2022]
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8
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Li Z, Xu J, Guan H, Lai J, Yang X, Ma J. Circ_0059354 aggravates the progression of papillary thyroid carcinoma by elevating ARFGEF1 through sponging miR-766-3p. J Endocrinol Invest 2022; 45:825-836. [PMID: 34854069 DOI: 10.1007/s40618-021-01713-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 11/19/2021] [Indexed: 10/19/2022]
Abstract
BACKGROUND Circular RNAs (circRNAs) have been identified as vital players in tumors, including papillary thyroid carcinoma (PTC). The purpose of this study is to explore the functions of circ_0059354 on PTC development. METHODS Quantitative real-time polymerase chain reaction (qRT-PCR) was conducted to examine the levels of circ_0059354, microRNA-766-3p (miR-766-3p) and ADP ribosylation factor guanine nucleotide exchange factor 1 (ARFGEF1). Cell Counting Kit-8 (CCK-8) assay and colony formation assay were proceeded for cell proliferation ability. Transwell assay was conducted for cell migration and invasion. Tube formation assay was employed to examine the angiogenesis ability. Flow cytometry analysis was adopted for cell apoptosis. Western blot assay was conducted for protein levels. Dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay were utilized to verify the relationships among circ_0059354, miR-766-3p and ARFGEF1. The murine xenograft model was constructed to analyze the function of circ_0059354 in vivo. RESULTS Circ_0059354 level was abnormally increased in PTC tissues and cells. Functionally, circ_0059354 silencing suppressed cell proliferation, migration, invasion and angiogenesis and facilitated apoptosis in PTC cells. Circ_0059354 was identified to sponge miR-766-3p, which directly targeted ARFGEF1. Moreover, circ_0059354 directly targeted miR-766-3p to positively regulated ARFGEF1 expression. MiR-766-3p inhibition reversed circ_0059354 knockdown-mediated effect of PTC cell malignant behaviors. Overexpression of miR-766-3p restrained the malignant behaviors of PTC cells, whereas ARFGEF1 elevation reversed the effects. Additionally, circ_0059354 deficiency blocked tumor growth in vivo. CONCLUSION Circ_0059354 served as an oncogene in PTC progression through regulating miR-766-3p/ARFGEF1 axis.
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Affiliation(s)
- Z Li
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, No. 157, Xiwu Road, Xi'an, 710004, Shaanxi, China
| | - J Xu
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, No. 157, Xiwu Road, Xi'an, 710004, Shaanxi, China
| | - H Guan
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, No. 157, Xiwu Road, Xi'an, 710004, Shaanxi, China
| | - J Lai
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, No. 157, Xiwu Road, Xi'an, 710004, Shaanxi, China
| | - X Yang
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, No. 157, Xiwu Road, Xi'an, 710004, Shaanxi, China
| | - J Ma
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, No. 157, Xiwu Road, Xi'an, 710004, Shaanxi, China.
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9
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Liu Y, Khan S, Li L, ten Hagen TL, Falahati M. Molecular mechanisms of thyroid cancer: A competing endogenous RNA (ceRNA) point of view. Biomed Pharmacother 2022; 146:112251. [DOI: 10.1016/j.biopha.2021.112251] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 09/23/2021] [Accepted: 09/26/2021] [Indexed: 12/25/2022] Open
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10
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Li J, Zhang G, Liu CG, Xiang X, Le MT, Sethi G, Wang L, Goh BC, Ma Z. The potential role of exosomal circRNAs in the tumor microenvironment: insights into cancer diagnosis and therapy. Am J Cancer Res 2022; 12:87-104. [PMID: 34987636 PMCID: PMC8690929 DOI: 10.7150/thno.64096] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 10/21/2021] [Indexed: 12/11/2022] Open
Abstract
Exosomes are multifunctional regulators of intercellular communication by carrying various messages under both physiological and pathological status of cancer patients. Accumulating studies have identified the presence of circular RNAs (circRNAs) in exosomes with crucial regulatory roles in diverse pathophysiological processes. Exosomal circRNAs derived from donor cells can modulate crosstalk with recipient cells locally or remotely to enhance cancer development and propagation, and play crucial roles in the tumor microenvironment (TME), leading to significant enhancement of tumor immunity, metabolism, angiogenesis, drug resistance, epithelial mesenchymal transition (EMT), invasion and metastasis. In this review, we describe the advances of exosomal circRNAs and their roles in modulating cancer hallmarks, especially those in the TME. Moreover, clinical application potential of exosomal circRNAs in cancer diagnosis and therapy are highlighted, bridging the gap between basic knowledge and clinical practice.
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11
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CircLDLR Promotes Papillary Thyroid Carcinoma Tumorigenicity by Regulating miR-637/LMO4 Axis. DISEASE MARKERS 2021; 2021:3977189. [PMID: 34925640 PMCID: PMC8677406 DOI: 10.1155/2021/3977189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 11/03/2021] [Accepted: 11/15/2021] [Indexed: 12/27/2022]
Abstract
Background Circular RNAs (circRNAs) have been reported to play important roles in the development and progression of papillary thyroid carcinoma (PTC). However, the function and molecular mechanism of circRNA low-density lipoprotein receptor (circLDLR) in the tumorigenesis of PTC remain unknown. Results In this study, circLDLR was found to be markedly upregulated in PTC tissues and cell lines, and knockdown of circLDLR inhibited PTC cell proliferation, migration, and invasion but induced apoptosis in vitro. Moreover, circLDLR acted as a sponge for miR-637, and miR-637 interference reversed the anticancer effects of circLDLR knockdown on PTC cells. LMO4 was verified to be a target of miR-637; LMO4 upregulation abolished miR-637 mediated inhibition of cell growth and metastasis in PTC. Additionally, circLDLR could indirectly modulate LMO4 via acting as a sponge of miR-637 in PTC cells. Besides that, xenograft analysis showed that circLDLR knockdown suppressed tumor growth in vivo via regulating LMO4 and miR-637. Conclusion Taken together, these results demonstrated that circLDLR promoted PTC tumorigenesis through miR-637/LMO4 axis, which may provide a novel insight into the understanding of PTC tumorigenesis and be useful in developing potential targets for PTC treatment.
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12
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Zheng H, Fu Q, Ma K, Shi S, Fu Y. Circ_0079558 promotes papillary thyroid cancer progression by binding to miR-26b-5p to activate MET/AKT signaling. Endocr J 2021; 68:1247-1266. [PMID: 34565758 DOI: 10.1507/endocrj.ej20-0498] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022] Open
Abstract
Circular RNAs (circRNAs) are a group of non-coding RNAs featured by covalently closed circular structure. CircRNA_0079558 (circ_0079558) is derived from RAPGEF5 gene, and it has been found to be significantly up-regulated in papillary thyroid carcinoma (PTC). However, the role and working mechanism of circ_0079558 in PTC progression have never been illustrated. The levels of circ_0079558 and MET proto-oncogene, receptor tyrosine kinase (MET) were up-regulated in PTC tissues and cell lines, as evidenced by reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and Western blot assay. The silencing of circ_0079558 or MET restrained cell proliferation, migration and invasion whereas triggered cell apoptosis in PTC cells, as verified by Cell Counting Kit-8 (CCK8) assay, plate colony formation assay, transwell invasion assay, wound healing assay and flow cytometry. Through using MET specific inhibitor PHA665752, we found that circ_0079558 overexpression enhanced the malignant behaviors of PTC cells through activating MET/AKT pathway. Through dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay, microRNA-26b-5p (miR-26b-5p) was identified to be the intermediary molecular between circ_0079558 and MET, and circ_0079558 knockdown reduced the expression of MET partly through elevating miR-26b-5p in PTC cells. The miR-198/FGFR1 pathway was identified as another signal axis downstream of circ_0079558, and the co-overexpression of FGFR1 and MET largely rescued the proliferation ability of circ_0079558-silenced PTC cells. Through xenograft tumor model, we found that circ_0079558 silencing restrained xenograft tumor growth in vivo. In conclusion, circ_0079558 facilitated the proliferation and motility whereas inhibited the apoptosis of PTC cells largely through mediating miR-26b-5p/MET/AKT signaling.
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Affiliation(s)
- Haibo Zheng
- Department of Anesthesiology, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Qingfeng Fu
- Department of Thyroid Surgery, China-Japan Union Hospital of Jilin University, Jilin Provincial Key Laboratory of Surgical Translational Medicine, Changchun, Jilin, China
| | - Kaili Ma
- Department of Thyroid Surgery, China-Japan Union Hospital of Jilin University, Jilin Provincial Key Laboratory of Surgical Translational Medicine, Changchun, Jilin, China
| | - Shuai Shi
- Department of Thyroid Surgery, China-Japan Union Hospital of Jilin University, Jilin Provincial Key Laboratory of Surgical Translational Medicine, Changchun, Jilin, China
| | - Yantao Fu
- Department of Thyroid Surgery, China-Japan Union Hospital of Jilin University, Jilin Provincial Key Laboratory of Surgical Translational Medicine, Changchun, Jilin, China
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13
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Miao L, Feng G, Yuan H. CircRNAs: a family number of miRNA regulatory transcriptome in laryngeal carcinoma. J Clin Lab Anal 2021; 35:e24038. [PMID: 34617636 PMCID: PMC8605118 DOI: 10.1002/jcla.24038] [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: 08/28/2021] [Revised: 09/22/2021] [Accepted: 09/23/2021] [Indexed: 01/22/2023] Open
Abstract
Laryngeal carcinoma (LC) is a common head and neck cancer, which is the result of mutational changes due to gene dysregulation and etiological factors such as tobacco and smoking. A large number of patients received a poor prognosis due to diagnosis at an advanced stage. This highlights the need for definitive, early, and efficient diagnoses. With rapid development of high‐throughput sequencing, circular RNA (circRNA) has been reported to play a pivotal role in cancer. CircRNA functions as a microRNA (miRNA) sponge in the regulation of mRNA expression, forming circRNA‐miRNA regulatory axis. In this review, we described the axis in LC. The result indicated that CDR1as, hsa_circ_0042823, hsa_circ_0023028, circPARD3, hsa_circ_103862, hsa_circ_0000218, circMYLK, circCORO1C, hsa_circ_100290, circ‐CCND1, hsa_circ_0057481, circFLAN, and circRASSF2 expressed higher in LC, whereas, hsa_circ_0036722 and hsa_circ_0042666 expressed lower. The circRNAs regulated the target genes by sponging miRNAs and contributed to the pathogenesis of LC.
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Affiliation(s)
- Limin Miao
- Department of Geriatric Dentistry, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China.,Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
| | - Guanying Feng
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China.,Department of Oral and Maxillofacial, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Hua Yuan
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China.,Department of Oral and Maxillofacial, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
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Li X, Zhang J, Zhang M, Qi X, Wang S, Teng J. Construction and comprehensive analysis of a competitive endogenous RNA network to reveal potential biomarkers for the malignant differentiation of glioma. Medicine (Baltimore) 2021; 100:e27248. [PMID: 34596120 PMCID: PMC8483826 DOI: 10.1097/md.0000000000027248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 08/27/2021] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Long noncoding RNAs (lncRNAs) can act as microRNA (miRNA) sponges to regulate protein-coding gene expression; therefore, lncRNAs are considered major components of the competitive endogenous RNA (ceRNA) network and have attracted growing attention. This study explored the regulatory mechanisms and functional roles of lncRNAs as ceRNAs in the malignant differentiation of low-grade glioma (LGG) to glioblastoma (GBM) and their potential impact on the prognosis of patients with GBM. METHODS LncRNA and messenger RNA (mRNA) data were extracted from the Cancer Genome Atlas (TCGA) database from 156 GBM samples and 529 LGG samples. Separately, the miRNA expression data were downloaded from the Gene Expression Omnibus database, with the GSE112009 dataset containing miRNA expression data from 10 GBM samples and 15 LGG samples. Weighted gene coexpression network analysis was performed to screen the glioma grade-related lncRNAs. Then, a ceRNA network was established. The database for annotation, visualization, and integrated discovery was adopted to conduct functional enrichment analysis based on 57 upregulated differentially expressed mRNAs in the ceRNA network. Finally, Kaplan-Meier curves were created for the survival analysis of 13 hub lncRNA by combining the clinical data of GBM patients in TCGA. RESULTS A ceRNA network including 16 lncRNAs, 18 miRNAs, and 78 mRNAs specific to the malignant differentiation of LGG to GBM was established. The 57 upregulated differentially expressed mRNAs in the ceRNA network were significantly enriched in 35 gene ontology terms and 5 pathways. The survival analysis showed that 2 lncRNAs (LINC00261 and HOXA10-AS) were prognostic biomarkers for patients with GBM in TCGA. CONCLUSION The proposed ceRNA network may help elucidate the regulatory mechanism by which lncRNAs function as ceRNAs and contribute to the malignant differentiation of LGG to GBM. Importantly, the candidate lncRNAs, miRNAs, and mRNAs involved in the ceRNA network can be further evaluated as potential therapeutic targets and prognostic biomarkers for GBM.
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Affiliation(s)
- Xin Li
- Weifang Traditional Chinese Medicine Hospital, WeiFang, China
| | - Jingwen Zhang
- School of Acupuncture and Massage, Shandong University of Traditional Chinese Medicine, JiNan, China
| | - Min Zhang
- School of Statistics, Renmin University of China, Beijing, China
| | - Xianghua Qi
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, JiNan, China
| | - Shiyuan Wang
- School of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, JiNan, China
| | - Jing Teng
- First School of Clinical Medicine, Shandong University of Traditional Chinese Medicine, JiNan, China
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15
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Yang L, Bi T, Zhou S, Lan Y, Zhang R. CircRASSF2 facilitates the proliferation and metastasis of colorectal cancer by mediating the activity of Wnt/β-catenin signaling pathway by regulating the miR-195-5p/FZD4 axis. Anticancer Drugs 2021; 32:919-929. [PMID: 33929991 DOI: 10.1097/cad.0000000000001084] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Circular RNAs (circRNA) are a key regulator of cancer progression, including colorectal cancer (CRC). Nevertheless, the role of circRASSF2 in CRC remains unclear. Quantitative real-time PCR was used to measure the expression of circRASSF2 and miR-195-5p. Cell counting kit 8 assay, colony formation assay, flow cytometry and transwell assay were used to determine the proliferation, apoptosis, migration and invasion of cells, respectively. The levels of proliferation, metastasis and Wnt/β-catenin signaling pathway-related proteins, as well as Frizzled 4 (FZD4) protein, were determined using western blot analysis. Furthermore, a dual-luciferase reporter assay, RNA immunoprecipitation assay and RNA pull-down assay were used to illumine the mechanism of circRASSF2. Animal experiments were used to determine the role of circRASSF2 in the tumor growth of CRC in vivo. Our study reported that circRASSF2 was upregulated in CRC tissues and cells, and its high expression was related to the poor prognosis of CRC patients. CircRASSF2 knockdown could inhibit proliferation, migration, invasion, and enhance apoptosis in CRC cells, and its overexpression had the opposite effect. Besides, our data revealed that circRASSF2 could sponge miR-195-5p, and miR-195-5p could target FZD4. The rescue experiments indicated that both miR-195-5p inhibitor and FZD4 overexpression could reverse the negative regulation of circRASSF2 silencing on CRC progression. Moreover, circRASSF2 could positively regulate the activity of Wnt/β-catenin signaling pathway by the miR-195-5p/FZD4 axis. In addition, circRASSF2 knockdown restrained the tumor growth of CRC in vivo. Our findings suggested that circRASSF2 might function as a tumor promoter to accelerate the progression of CRC via regulating the miR-195-5p/FZD4/Wnt/β-catenin pathway.
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Affiliation(s)
- Leilei Yang
- Department of Gastrointestinal Surgery, Taizhou Hospital of Zhejiang Province, Wenzhou Medical University, Linhai City, Zhejiang Province, China
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Zhu G, Chang X, Kang Y, Zhao X, Tang X, Ma C, Fu S. CircRNA: A novel potential strategy to treat thyroid cancer (Review). Int J Mol Med 2021; 48:201. [PMID: 34528697 PMCID: PMC8480381 DOI: 10.3892/ijmm.2021.5034] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 09/02/2021] [Indexed: 12/12/2022] Open
Abstract
Thyroid cancer (TC) is the most common type of endocrine cancer. Over the last 50 years, the global incidence of TC has been increasing. The survival rate of TC is higher than that of most other types of cancer, but it depends on numerous factors, including the specific type of TC and stage of the disease. Circular RNAs (circRNAs) are a new class of long noncoding RNA with a closed loop structure that have a critical role in the complex gene regulatory network that controls the emergence of TC. The most important function of circRNAs is their ability to specifically bind to microRNAs. In addition, the biological functions of circRNAs also include interactions with proteins, regulation of the transcription of genes and acting as translation templates. Based on the characteristics of circRNAs, they have been identified as potential biomarkers for the diagnosis of tumors. In the present review, the function and significance of circRNAs and their potential clinical implications for TC were summarized. Furthermore, possible treatment approaches involving the use of mesenchymal stem cells (MSCs) and exosomes derived from MSCs as carriers to load and transport circRNAs were discussed.
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Affiliation(s)
- Guomao Zhu
- Endocrinology Department, The First Hospital of Lanzhou University, Lanzhou, Gansu 730030, P.R. China
| | - Xingyu Chang
- Endocrinology Department, The First Hospital of Lanzhou University, Lanzhou, Gansu 730030, P.R. China
| | - Yuchen Kang
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu 730030, P.R. China
| | - Xinzhu Zhao
- Endocrinology Department, The First Hospital of Lanzhou University, Lanzhou, Gansu 730030, P.R. China
| | - Xulei Tang
- Endocrinology Department, The First Hospital of Lanzhou University, Lanzhou, Gansu 730030, P.R. China
| | - Chengxu Ma
- Endocrinology Department, The First Hospital of Lanzhou University, Lanzhou, Gansu 730030, P.R. China
| | - Songbo Fu
- Endocrinology Department, The First Hospital of Lanzhou University, Lanzhou, Gansu 730030, P.R. China
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Li R, Pang XF, Huang ZG, Yang LH, Peng ZG, Ma J, He RQ. Overexpression of UBE2C in esophageal squamous cell carcinoma tissues and molecular analysis. BMC Cancer 2021; 21:996. [PMID: 34488675 PMCID: PMC8422647 DOI: 10.1186/s12885-021-08634-6] [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: 04/09/2021] [Accepted: 07/26/2021] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Esophageal cancer is a common malignant tumor and its 5-year survival rate is much lower than 30% due to its invasiveness and pronounced metastasis ability, as well as the difficulty in early diagnosis. This study aimed to elucidate the molecular mechanism of ubiquitin conjugating enzyme E2 C (UBE2C) in esophageal squamous cell carcinoma (ESCC). METHODS In this study, we conducted a comprehensive evaluation of the UBE2C expression in ESCC by collecting the protein and mRNA expression data (including in-house RNA-seq, in-hosue immunohistochemistry, TCGA-GTEx RNA-seq and tissue microarray) to calculate a combined standardized mean difference (SMD) and summary receiver operating characteristic curve (sROC). Kaplan-Meier (K-M) method was used for survival analysis. We also explored the mechanism of UBE2C in ESCC by combing the differentially expressed genes (DEGs) of ESCC, related-genes of UBE2C in ESCC and the putative miRNAs and lncRNAs which may regulate UBE2C. RESULTS UBE2C protein and mRNA were highly expressed in ESCC tissues (including 772 ESCC tissue samples and 1837 non-cancerous tissue control samples). The pooled SMD of UBE2C expression values was 1.98 (95% CI: 1.51-2.45, p < 0.001), and the the area under the curve (AUC) of the sROC was 0.93 (95% CI: 0.90-0.95). The results of survival analysis suggested that UBE2C is likely to play different roles in different stages of the ESCC. Pathway anaylsis showed that UBE2C mainly influenced the biological function of esophageal cancer by synergistic effects with CDK1, PTTG1 and SKP2. We also constructed a potential UBE2C-related ceRNA network for ESCC (HCP5/has-miR-139-5p/UBE2C). CONCLUSION UBE2C mRNA and protein level were highly expressed in ESCC and UBE2C was likely to play different roles in different stages of the ESCC.
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Affiliation(s)
- Rong Li
- Department of Medical Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Xing-Feng Pang
- Department of Medical Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Zhi-Guang Huang
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Li-Hua Yang
- Department of Medical Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Zhi-Gang Peng
- Department of Medical Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jie Ma
- Department of Medical Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Rong-Quan He
- Department of Medical Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.
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Cheng L, Cao H, Xu J, Xu M, He W, Zhang W, Dong L, Chen D. Circ_RPL23A acts as a miR-1233 sponge to suppress the progression of clear cell renal cell carcinoma by promoting ACAT2. J Bioenerg Biomembr 2021; 53:415-428. [PMID: 34036483 DOI: 10.1007/s10863-021-09901-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 04/27/2021] [Indexed: 12/13/2022]
Abstract
Clear cell renal cell carcinoma (ccRCC) is a prevalent urological carcinoma with high metastatic risk. Circular RNAs (circRNAs) have been identified as effective diagnostic and therapeutic biomarkers for ccRCC. This research aims to disclose the effect and regulatory mechanism of circRNA ribosomal protein L23a (circ_RPL23A) in ccRCC. We performed quantitative real-time polymerase chain reaction (qRT-PCR) to examine circ_RPL23A, microRNA-1233 (miR-1233) and acetyl-coenzyme A acetyltransferase 2 (ACAT2). Cell cycle progression, apoptosis, cell viability, invasion and migration, which were respectively conducted by using flow cytometry, 3-(4, 5-dimethylthiazol-2-y1)-2, 5-diphenyl tetrazolium bromide (MTT), transwell assays. The levels of ACAT2 protein and cell cycle proteins, proliferation-associated protein, and epithelial-mesenchymal transition (EMT) associated proteins were measured by western blot. Target relationship was analyzed via dual-luciferase reporter assay and RNA pull down assay. The animal model was used to study how circ_RPL23A affects in vivo. Circ_RPL23A was lower expressed in ccRCC tissues and cells. The elevated circ_RPL23A suppressed cell cycle progression, proliferation, migration and invasion but promoted apoptosis in ccRCC cells. MiR-1233 was a target of circ_RPL23A and direct targeted to ACAT2. Besides, circ_RPL23A exerted its anti-tumor effect by sponging miR-1233, and then relieved the inhibition effect of miR-1233 on ACAT2. Overexpression of circ_RPL23A also curbed ccRCC tumor growth in vivo. Circ_RPL23A inhibited ccRCC progression by upregulating ACAT2 expression by competitively binding miR-1233, which might provide an in-depth cognition for ccRCC pathogenesis and circ_RPL23A might be a promising biomarker in ccRCC diagnosis and treatment.
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Affiliation(s)
- Liang Cheng
- Department of Urology, The First Affiliated Hospital of Jiamusi University, No.348, Dexiang Street, Jiamusi, 154002, Heilongjiang, Province, China
| | - Huifeng Cao
- Department of Urology, The First Affiliated Hospital of Jiamusi University, No.348, Dexiang Street, Jiamusi, 154002, Heilongjiang, Province, China
| | - Jianbo Xu
- Department of Critical Medicine, The First Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang, China
| | - Mo Xu
- Department of Urology, The First Affiliated Hospital of Jiamusi University, No.348, Dexiang Street, Jiamusi, 154002, Heilongjiang, Province, China
| | - Wenjie He
- Department of Outpatient, The First Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang, China
| | - Wenjing Zhang
- Department of Operating Room, The First Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang, China
| | - Longxin Dong
- Jiamusi University, Jiamusi, Heilongjiang, China
| | - Dayin Chen
- Department of Urology, The First Affiliated Hospital of Jiamusi University, No.348, Dexiang Street, Jiamusi, 154002, Heilongjiang, Province, China.
- Jiamusi University, Jiamusi, Heilongjiang, China.
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Sun Q, Luo M, Gao Z, Han X, Wu W, Zhao H. Long non-coding RNA OIP5-AS1 aggravates acute lung injury by promoting inflammation and cell apoptosis via regulating the miR-26a-5p/TLR4 axis. BMC Pulm Med 2021; 21:236. [PMID: 34261477 PMCID: PMC8281572 DOI: 10.1186/s12890-021-01589-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 06/13/2021] [Indexed: 12/03/2022] Open
Abstract
Background Acute lung injury (ALI) is a pulmonary disorder that leads to acute respiration failure and thereby results in a high mortality worldwide. Increasing studies have indicated that toll-like receptor 4 (TLR4) is a promoter in ALI, and we aimed to explore the underlying upstream mechanism of TLR4 in ALI. Methods We used lipopolysaccharide (LPS) to induce an acute inflammatory response in vitro model and a murine mouse model. A wide range of experiments including reverse transcription quantitative polymerase chain reaction, western blot, enzyme linked immunosorbent assay, flow cytometry, hematoxylin–eosin staining, RNA immunoprecipitation, luciferase activity and caspase-3 activity detection assays were conducted to figure out the expression status, specific role and potential upstream mechanism of TLR4 in ALI. Result TLR4 expression was upregulated in ALI mice and LPS-treated primary bronchial/tracheal epithelial cells. Moreover, miR-26a-5p was confirmed to target TLR4 according to results of luciferase reporter assay. In addition, miR-26a-5p overexpression decreased the contents of proinflammatory factors and inhibited cell apoptosis, while upregulation of TLR4 reversed these effects of miR-26a-5p mimics, implying that miR-26a-5p alleviated ALI by regulating TLR4. Afterwards, OPA interacting protein 5 antisense RNA 1 (OIP5-AS1) was identified to bind with miR-26a-5p. Functionally, OIP5-AS1 upregulation promoted the inflammation and miR-26a-5p overexpression counteracted the influence of OIP5-AS1 upregulation on cell inflammatory response and apoptosis. Conclusion OIP5-AS1 promotes ALI by regulating the miR-26a-5p/TLR4 axis in ALI mice and LPS-treated cells, which indicates a promising insight into diagnostics and therapeutics in ALI. Supplementary Information The online version contains supplementary material available at 10.1186/s12890-021-01589-1.
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Affiliation(s)
- Qingsong Sun
- Department of Emergency, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No. 1, Huanghe West Road, Huaiyin District, Huaian, 223300, Jiangsu, China
| | - Man Luo
- Department of Emergency, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No. 1, Huanghe West Road, Huaiyin District, Huaian, 223300, Jiangsu, China
| | - Zhiwei Gao
- Department of Emergency, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No. 1, Huanghe West Road, Huaiyin District, Huaian, 223300, Jiangsu, China
| | - Xiang Han
- Department of Emergency, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No. 1, Huanghe West Road, Huaiyin District, Huaian, 223300, Jiangsu, China
| | - Weiqin Wu
- Department of Emergency, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No. 1, Huanghe West Road, Huaiyin District, Huaian, 223300, Jiangsu, China
| | - Hongmei Zhao
- Department of Emergency, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No. 1, Huanghe West Road, Huaiyin District, Huaian, 223300, Jiangsu, China.
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20
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Zhong W, Bao L, Yuan Y, Meng Y. CircRASSF2 acts as a prognostic factor and promotes breast cancer progression by modulating miR-1205/HOXA1 axis. Bioengineered 2021; 12:3014-3028. [PMID: 34180753 PMCID: PMC8806576 DOI: 10.1080/21655979.2021.1933300] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Circular RNA (circRNA), a recently identified endogenous non-coding RNA molecule, regulates gene expression in mammals. At the current stage, the expression and function of circRASSF2 in breast cancer (BC) have not been clarified. According to our study, it is found that circRASSF2 sequences contain miR-1205 binding sites, and Homeobox gene A1 (HOXA1) is the target gene of miR-1205. Besides, the clinical observations and histopathologic study reveal that the expression of circRASSF2 increased to a significant extent in BC tissues and serum. Additionally, it is found that circRASSF2 expression had a positive correlation with distant metastasis, lymph node metastasis, TNM stage, differentiation and tumor size, and that overall survival (OS) and progression-free survival (PFS) of circRASSF2 high expression BC patients were inferior to those with low circRASSF2 expression. In vitro study, an overt decrease was detected in the proliferation, clone formation ability, migration and invasion of breast cancer cells in cells when circRASSF2 was knocked down. We confirmed the direct interaction between circRASSF2, miR-1205 and HOXA1 by a dual luciferase reporter system. Additionally, our study revealed that over-expression of miR-1205 decreased HOXA1 protein expression, and HOXA1 protein expression decreased when circRASSF2 were knocked down, and when miR-1205 expression was inhibited, HOXA1 expression was significantly increased. In conclusion, our study suggests that circRASSF2 regulates BC progression through the miR-1205/HOXA1 pathway. Our findings suggest the prospect of circRASSF2 serving as therapeutic target as such to cure BC patients.
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Affiliation(s)
- Wei Zhong
- Department of Breast Cancer, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Lei Bao
- Department of Pathology, The Affliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong Province, China
| | - Yangyi Yuan
- Fuzhou Medical College, Nanchang University, Nanchang, Jiangxi Province
| | - Yanzhi Meng
- Department of Medical Ultrasonics, Wuhan Youfu Hospital, Wuhan, Hubei, China
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21
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Chen L, Sun Z, Xu H, Xie Q, Qi M, Tian X, Wang T. Emerging roles of circular RNAs in thyroid cancer. Exp Cell Res 2021; 404:112626. [PMID: 34023393 DOI: 10.1016/j.yexcr.2021.112626] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/19/2021] [Accepted: 04/22/2021] [Indexed: 11/30/2022]
Abstract
As the most common endocrine-related malignant tumor, the prevalence of thyroid cancer (TC) has soared strikingly over the past thirty years then verged to stabilization or even descension temporally. Distributed in a cell-specific manner, circular RNAs (circRNAs) is a novel class of non-coding RNAs characterized by its covalently closed loop without 5'-terminal cap and 3'-terminal poly A tail, which guarantee its distinctive evolutionary conservation and exonucleases resistance. Emerging evidence indicates that circRNA participates in the pathogenesis and carcinogenesis of several cancers including thyroid cancer. In this review, we concentrated on the connection between circRNAs and thyroid cancer so as to obtain a more profound understanding. We aim to discuss this relationship between TC and circRNAs by summarizing the effect of various circRNAs on tumor biological behaviors and clinical application, and systematically outlook the conceivable application of circRNAs in TC diagnosis and therapy.
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Affiliation(s)
- Lin Chen
- Department of Breast and Thyroid Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.
| | - Zhigang Sun
- Department of Colorectal Surgery and State Key Lab of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Hao Xu
- Department of Thyroid and Breast Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China.
| | - Qiuping Xie
- Department of Thyroid Surgery, The Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou, Zhejiang, 310009, China.
| | - Ming Qi
- Department of Thyroid and Breast Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China.
| | - Xingsong Tian
- Department of Thyroid and Breast Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China.
| | - Tiantian Wang
- Department of Breast and Thyroid Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China; Department of Thyroid and Breast Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China; Department of Thyroid Surgery, The Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou, Zhejiang, 310009, China.
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Xia F, Zhang Z, Li X. Emerging Roles of Circular RNAs in Thyroid Cancer. Front Cell Dev Biol 2021; 9:636838. [PMID: 33981702 PMCID: PMC8107370 DOI: 10.3389/fcell.2021.636838] [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: 12/02/2020] [Accepted: 03/02/2021] [Indexed: 12/26/2022] Open
Abstract
Thyroid cancer (TC) has the highest incidence among endocrine malignancies. Thus, it is essential to achieve a deep understanding of various mechanisms of development and progression of TC. circRNAs are recognized by multiple studies as being dysregulated in TC. Accumulating evidences have revealed that circRNAs serve as regulatory molecules involved in various biological processes in TC, including cell proliferation, apoptosis, invasion/migration, metabolism, and chemoresistance. Furthermore, circRNA can also serve as an effective tool in TC researches of diagnosis, prognosis, and treatments. Thus, this review is to outline the characteristics of circRNAs, generalize their categories and functions, and highlight the expression of circRNAs in TC. Meanwhile, we are expecting to achieve a comprehensive understanding of new therapies based on circRNAs in treating or preventing TC.
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Affiliation(s)
- Fada Xia
- Department of Thyroid Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Zeyu Zhang
- Department of Thyroid Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Xinying Li
- Department of Thyroid Surgery, Xiangya Hospital, Central South University, Changsha, China
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Qi Y, He J, Zhang Y, Wang L, Yu Y, Yao B, Tian Z. Circular RNA hsa_circ_0001666 sponges miR‑330‑5p, miR‑193a‑5p and miR‑326, and promotes papillary thyroid carcinoma progression via upregulation of ETV4. Oncol Rep 2021; 45:50. [PMID: 33760216 PMCID: PMC7934216 DOI: 10.3892/or.2021.8001] [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: 10/12/2020] [Accepted: 01/28/2021] [Indexed: 12/24/2022] Open
Abstract
Circular RNAs (circRNAs) are a group of regulators that affect the aggressive behaviors of several types of cancer. Hsa_circ_0001666 (also referred to as hsa_circ_000742) is a newly discovered circRNA that is upregulated in human papillary thyroid carcinoma (PTC) based on microarray analysis. However, the role of hsa_circ_0001666 in PTC progression remains unknown. Thus, the aim of the present study was to determine the potential function and underlying mechanism of hsa_circ_0001666 in PTC. The results demonstrated that hsa_circ_0001666 was upregulated in both PTC clinical samples and cell lines. Its expression was associated with lymph node metastasis of patients with PTC. Knocking down hsa_circ_0001666 expression inhibited cell proliferation, as evidenced by decreased cell viability, arrest of cell cycle progression at the G1 phase and an increase in cell cycle-associated proteins. Apoptosis rates and expression levels of pro-apoptotic proteins were also increased by silencing hsa_circ_0001666. In xenograft experiments, the oncogenic effect of hsa_circ_0001666 on tumor growth was verified. Additionally, luciferase reporter assays showed that hsa_circ_0001666 and ETS variant transcription factor 4 (ETV4) shared common binding sites with three microRNAs [(miRNA/miR)-330-5p, miR-193a-5p and miR-326]. Knockdown of these miRNAs separately reversed the inhibitory effect of hsa_circ_0001666 small interfering RNAs on PTC tumor aggressiveness, and ETV4 overexpression also induced a similar effect to that of miRNA inhibitors. Thus, hsa_circ_0001666 may function as an oncogene, promoting PTC tumorigenesis via the miR-330-5p/miR-193a-5p/miR-326/ETV4 pathway. This provides a basis for identifying potential novel therapeutic targets for PTC.
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Affiliation(s)
- Ying Qi
- Department of Radiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, P.R. China
| | - Jingni He
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, P.R. China
| | - Ying Zhang
- Department of Clinical Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, P.R. China
| | - Lidong Wang
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, P.R. China
| | - Yifan Yu
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, P.R. China
| | - Baiyu Yao
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, P.R. China
| | - Zhong Tian
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, P.R. China
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Mei S, Zong H, Zhou H. Long non-coding RNA PITPNA-AS1 regulates UNC5B expression in papillary thyroid cancer via sponging miR-129-5p. Int J Biol Markers 2021; 36:10-19. [PMID: 33706585 DOI: 10.1177/1724600820985528] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Long non-coding RNA (lncRNA) PITPNA antisense RNA 1 (PITPNA-AS1) expression characteristics, function, and mechanism in papillary thyroid cancer are unclear. METHODS Quantitative real-time polymerase chain reaction (qRT-PCR) was applied for detecting PITPNA-AS1, UNC-5 netrin receptor B (UNC5B) mRNA, and miR-129-5p expressions in papillary thyroid cancer tissues and cell lines. EdU assay, cell counting kit-8 (CCK-8) assay, wound healing assay, and flow cytometry analysis were performed to investigate the biological functions of PITPNA-AS1 in papillary thyroid cancer. Dual-luciferase reporter assay was utilized for determining whether PITPNA-AS1 and miR-129-5p, as well as UNC5B and miR-129-5p could directly bind to each other. Western blot assay was employed for measuring UNC5B protein expression level in papillary thyroid cancer cell lines. RESULTS PITPNA-AS1 and UNC5B expressions were markedly increased in papillary thyroid cancer tissues and cell lines while miR-129-5p expression was down-regulated. Knockdown of PITPNA-AS1 could significantly inhibit papillary thyroid cancer cell growth and migration and promote cell apoptosis while UNC5B overexpression plasmids or miR-129-5p inhibitors counteracted the knockdown effect of PITPNA-AS1 on papillary thyroid cancer cells. PITPNA-AS1 targeted miR-129-5p to repress its expression and miR-129-5p targeted UNC5B to repress its expression. Silencing PITPNA-AS1 reduced the expression of UNC5B via regulating miR-129-5p expression. CONCLUSIONS PITPNA-AS1 facilitated papillary thyroid cancer cell proliferation and migration, and suppressed apoptosis through miR-129-5p/UNC5B axis.
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Affiliation(s)
- Shijuan Mei
- Department of Breast and Thyroid Surgery, Qinghai University Affiliated Hospital, Xining, Qinghai, China
| | - Huafeng Zong
- Department of Pathology, Dalian Friendship Hospital, Zhongshan District, Dalian, Liaoning, China
| | - Haicheng Zhou
- Department of Endocrinology, the First Affiliated Hospital of Dalian Medical University, Xigang District, Liaoning, China
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25
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Ma YS, Yang XL, Xin R, Liu JB, Fu D. Power and promise of exosomes as clinical biomarkers and therapeutic vectors for liquid biopsy and cancer control. Biochim Biophys Acta Rev Cancer 2020; 1875:188497. [PMID: 33370570 DOI: 10.1016/j.bbcan.2020.188497] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 12/17/2020] [Accepted: 12/21/2020] [Indexed: 02/07/2023]
Abstract
Exosomes, microvesicles derived from the nuclear endosome and plasma membrane, can be released into the extracellular environment to act as mediators between the cell membrane and cytoplasmic proteins, lipids, or RNA. Exosomes are considered effective carriers of intercellular signals in prokaryotes and eukaryotes, because of their ability to efficiently transfer proteins, lipids, and nucleic acids between cellular compartments. Since the 2007 discovery that exosomes carry bioactive substances, exosomes have been intensively researched. In various physiological and pathological processes, exosomes play important biological roles by specifically combining with receptor cells and transmitting information. Their stable biological characteristics, diversity of contents, non-invasiveness path for introducing signaling molecules, and ability for rapid detection make exosomes a promising clinical diagnostic marker for potentially many pathological conditions, including cancers. Exosomes are not only considered biomarkers and prognostic disease factors, but also have potential as gene carriers and drug delivery vectors, and have important clinical significance and application potential in the fields of cancer diagnosis, prognosis, and treatment.
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Affiliation(s)
- Yu-Shui Ma
- Department of Pancreatic and Hepatobiliary Surgery, Cancer Hospital, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Cancer Institute, Nantong Tumor Hospital, Nantong 226631, China; Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China.
| | - Xiao-Li Yang
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Rui Xin
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Ji-Bin Liu
- Cancer Institute, Nantong Tumor Hospital, Nantong 226631, China
| | - Da Fu
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China.
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26
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Tang M, Wang Q, Wang K, Wang F. Mesenchymal stem cells-originated exosomal microRNA-152 impairs proliferation, invasion and migration of thyroid carcinoma cells by interacting with DPP4. J Endocrinol Invest 2020; 43:1787-1796. [PMID: 32876927 DOI: 10.1007/s40618-020-01406-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 08/23/2020] [Indexed: 01/19/2023]
Abstract
BACKGROUND Thyroid carcinoma (THCA) is the most prevalent tumor in the endocrine system with an increasing incidence. Recent studies have underscored the function of microRNAs (miRNAs) in THCA. Nevertheless, knowledge regarding the effects of exosomal miRNAs in THCA is still limited. This report intended to probe the regulatory effects of exosomal miR-152 on THCA and the underlying mechanism. METHODS The expression profile of miR-152 was studied in clinical samples as well as B-CPAP and TPC-1 cells. Transwell, CCK-8, and flow cytometric assays were performed to investigate the roles of miR-152 on invasion, migration, proliferation, and apoptosis in B-CPAP and TPC-1 cells. The putative target of miR-152 was predicted using the bioinformatic analysis, and the targeting relationship was confirmed verified subsequently. Afterward, exosomes were isolated from bone marrow mesenchymal stem cells (BM-MSCs) and co-cultured with B-CPAP and TPC-1 cells to explore the function of exosomal miR-152 on THCA cells. RESULTS miR-152 was reduced in THCA tissues and cells. Restoration of miR-152 inhibited proliferation, invasion and migration of B-CPAP and TPC-1 cells, but promoted cell apoptosis. Dipeptidyl dipeptidase 4 (DPP4), a target of miR-152, was found to promote THCA cell invasion and migration. miR-152 ferried by BM-MSCs-derived exosomes repressed THCA cell invasion and migration, and pcDNA-DPP4 weakened the repression effect. CONCLUSION Exosomal miR-152 inhibited proliferation, migration and invasion of THCA cells by binding with DPP4, which may represent a novel target for the treatment of THCA.
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Affiliation(s)
- M Tang
- Department of Endocrinology and Metabolism, The First Affiliated Hospital of Chengdu Medical College, Chengdu, 610500, Sichuan, China
| | - Q Wang
- Department of Rehabilitation, The First Affiliated Hospital of Chengdu Medical College, No. 278, Middle Section of Baoguang Avenue, Xindu District, Chengdu, 610500, Sichuan, China
| | - K Wang
- Department of Rehabilitation, The First Affiliated Hospital of Chengdu Medical College, No. 278, Middle Section of Baoguang Avenue, Xindu District, Chengdu, 610500, Sichuan, China.
| | - F Wang
- Department of Rehabilitation, The First Affiliated Hospital of Chengdu Medical College, No. 278, Middle Section of Baoguang Avenue, Xindu District, Chengdu, 610500, Sichuan, China.
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Feng K, Ma R, Zhang L, Li H, Tang Y, Du G, Niu D, Yin D. The Role of Exosomes in Thyroid Cancer and Their Potential Clinical Application. Front Oncol 2020; 10:596132. [PMID: 33335859 PMCID: PMC7736410 DOI: 10.3389/fonc.2020.596132] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 10/30/2020] [Indexed: 12/12/2022] Open
Abstract
The incidence of thyroid cancer (TC) is rapidly increasing worldwide. The diagnostic accuracy and dynamics of TC need to be improved, and traditional treatments are not effective enough for patients with poorly differentiated thyroid cancer. Exosomes are membrane vesicles secreted specifically by various cells and are involved in intercellular communication. Recent studies have shown that exosomes secreted by TC cells contribute to tumor progression, angiogenesis and metastasis. Exosomes in liquid biopsies can reflect the overall molecular information of tumors, and have natural advantages in diagnosing TC. Exosomes also play an important role in tumor therapy due to their special physicochemical properties. TC patients will benefit as more exosome patterns are discovered. In this review, we discuss the role of TC-derived exosomes in tumorigenesis and development, and describe the application of exosomes in the diagnosis and treatment of TC.
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Affiliation(s)
- Kaixiang Feng
- Department of Thyroid Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Department of Thyroid Surgery, Key Discipline Laboratory of Clinical Medicine of Henan, Zhengzhou, China.,Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Runsheng Ma
- Department of Thyroid Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Department of Thyroid Surgery, Key Discipline Laboratory of Clinical Medicine of Henan, Zhengzhou, China.,Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Lele Zhang
- Department of Thyroid Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Department of Thyroid Surgery, Key Discipline Laboratory of Clinical Medicine of Henan, Zhengzhou, China
| | - Hongqiang Li
- Department of Thyroid Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Department of Thyroid Surgery, Key Discipline Laboratory of Clinical Medicine of Henan, Zhengzhou, China
| | - Yifeng Tang
- Department of Thyroid Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Department of Thyroid Surgery, Key Discipline Laboratory of Clinical Medicine of Henan, Zhengzhou, China
| | - Gongbo Du
- Department of Thyroid Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Department of Thyroid Surgery, Key Discipline Laboratory of Clinical Medicine of Henan, Zhengzhou, China.,Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Dongpeng Niu
- Department of Thyroid Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Department of Thyroid Surgery, Key Discipline Laboratory of Clinical Medicine of Henan, Zhengzhou, China.,Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Detao Yin
- Department of Thyroid Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Department of Thyroid Surgery, Key Discipline Laboratory of Clinical Medicine of Henan, Zhengzhou, China
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Abstract
Exosomes, the nanoscale phospholipid bilayer vesicles, enriched in selected proteins, nucleic acids and lipids, which they participated in a variety of biological processes in the body, including physiology and pathology. CircRNAs (circular RNAs) are a class of single-stranded closed molecules with tissue development specific expression patterns that have crucial regulatory functions in various diseases. Non-coding RNAs (such as microRNAs and long non‑coding RNAs) in exosomes have also been shown to play an important regulatory role in humans. However, little research has focused on exosomal circRNAs. Recently, CircRNAs have been identified to be enriched and stably expressed in exosomes. In this review, we summarize the biogenesis and biological functions of exosomes and circRNA, and further revealed the potential role of exosome-derived circRNA in different diseases. Besides, we propose its use as a diagnostic marker and therapeutic punctuation for diseases, especially in cancer.
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Lu Y, Lan N, Zhang Y, Nie X, Pu S, Yuan W. Role of extracellular vesicles in the progression, diagnosis and treatment of thyroid cancer (Review). Int J Oncol 2020; 57:881-889. [PMID: 32945399 DOI: 10.3892/ijo.2020.5111] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 08/04/2020] [Indexed: 11/06/2022] Open
Abstract
Extracellular vesicles (EVs) enclose a myriad of proteins and nucleic acids that are released in the extracellular milieu of cells through EVs. These secreted molecules serve as signaling factors that can alter the biological characteristics of tumor cells. Several studies have suggested that EVs are associated with tumor proliferation, metastasis and microenvironmental regulation in thyroid carcinoma (TC). The biomolecules in EVs can serve as differential diagnostic biomarkers for TC. Moreover, EVs derived from natural killer (NK) cells can be developed as potential immunotherapeutic agents, since they can actively target and kill tumor cells in TC. Recent years have witnessed a steep rise in the number of TC cases, and thus, accurate diagnosis and novel TC treatment strategies are being actively explored. The present review discusses the recent research investigations on EVs as far as the biological, clinical diagnosis and treatment of primary TC tumors are concerned. In addition, the new opportunities and challenges encountered in the practical applications of EVs in thyroid carcinoma are outlined.
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Affiliation(s)
- Ying Lu
- The First School of Clinical Medicine, Lanzhou University, Lanzhou 730000, P.R. China
| | - Ning Lan
- The First School of Clinical Medicine, Lanzhou University, Lanzhou 730000, P.R. China
| | - Yigan Zhang
- The First School of Clinical Medicine, Lanzhou University, Lanzhou 730000, P.R. China
| | - Xin Nie
- The First School of Clinical Medicine, Lanzhou University, Lanzhou 730000, P.R. China
| | - Shuangshuang Pu
- The First School of Clinical Medicine, Lanzhou University, Lanzhou 730000, P.R. China
| | - Wenzhen Yuan
- The First School of Clinical Medicine, Lanzhou University, Lanzhou 730000, P.R. China
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Gui X, Li Y, Zhang X, Su K, Cao W. Circ_LDLR promoted the development of papillary thyroid carcinoma via regulating miR-195-5p/LIPH axis. Cancer Cell Int 2020; 20:241. [PMID: 32549788 PMCID: PMC7296738 DOI: 10.1186/s12935-020-01327-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 06/07/2020] [Indexed: 01/16/2023] Open
Abstract
Background Emerging studies have demonstrated that circular RNAs (circRNAs) are key regulators for tumorigenesis in cancers, including papillary thyroid carcinoma (PTC). In this study, we aimed to explore the effects of circ_LDLR on PTC. Methods Quantitative real-time polymerase chain reaction (qRT-PCR) was performed to determine the levels of circ_LDLR, miR-195-5p and lipase H (LIPH). RNase R digestion assay and Actinomycin D assay were utilized to analyze the characteristics of circ_LDLR. Colony formation assay and 3-(4,5-dimethyl-2-thiazolyl)-2, 5-diphenyl-2-H-tetrazolium bromide (MTT) assay were conducted to evaluate cell proliferation. Western blot assay was used for the determination of protein levels. Flow cytometry analysis was applied to determine cell apoptosis. Transwell assay was performed to determine cell migration and invasion. Dual-luciferase reporter assay was used to verify the associations among circ_LDLR, miR-195-5p and LIPH. The murine xenograft model was constructed to explore the roles of circ_LDLR in vivo. Results Compared to normal tissues and cells, circ_LDLR was upregulated in PTC tissues and cells. Silencing of circ_LDLR suppressed PTC cell colony formation, proliferation, migration and invasion and promoted apoptosis in vitro and hampered tumor growth in vivo. For mechanism investigation, circ_LDLR could regulate LIPH expression via sponging miR-195-5p. Moreover, miR-195-5p inhibition restored the effects of circ_LDLR knockdown on the malignant behaviors of PTC cells. MiR-195-5p overexpression inhibited PTC cell colony formation, proliferation, migration and invasion and facilitated apoptosis by targeting LIPH. Conclusion Circ_LDLR knockdown decelerated PTC progression by regulating miR-195-5p/LIPH axis, which might provide a novel therapeutic target for PTC.
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Affiliation(s)
- Xiaolong Gui
- Department of Gastrointestinal & Gland Surgery, The First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning, 530021 Guangxi China
| | - Yan Li
- Department of Pharmacy, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, 530021 Guangxi China
| | - Xiaobin Zhang
- Department of Gastrointestinal & Gland Surgery, The First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning, 530021 Guangxi China
| | - Ka Su
- Department of Gastrointestinal & Gland Surgery, The First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning, 530021 Guangxi China
| | - Wenlong Cao
- Department of Gastrointestinal & Gland Surgery, The First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning, 530021 Guangxi China
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31
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Xu X, Jing J. Advances on circRNAs Contribute to Carcinogenesis and Progression in Papillary Thyroid Carcinoma. Front Endocrinol (Lausanne) 2020; 11:555243. [PMID: 33551989 PMCID: PMC7859613 DOI: 10.3389/fendo.2020.555243] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 11/13/2020] [Indexed: 12/15/2022] Open
Abstract
In view of the highly increased prevalence of papillary thyroid carcinoma (PTC) year by year, it is of great importance to explore new molecular targets for anticancer strategies. Emerging evidence indicates that circular RNAs (circRNAs), characterized by a closed-loop structure and high stability, play important roles in tumorigenesis and development of human cancer by regulating multiple complex biological processes, such as cellular proliferation, metastasis, and metabolism. A comprehensive understanding of the roles of circRNAs will facilitate the development of promising future therapeutic strategies for treating cancers, including PTC. In this paper, we review the profile of circRNA in PTC, its regulatory roles, and the pathological mechanism as well as their related clinical significance. In addition, challenges of this specific field are discussed.
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